--- /dev/null
+/*\r
+Copyright (c) 2013 Intel Corporation.\r
+\r
+Redistribution and use in source and binary forms, with or without modification,\r
+are permitted provided that the following conditions are met:\r
+\r
+* Redistributions of works must retain the original copyright notice, this list\r
+ of conditions and the following disclaimer.\r
+* Redistributions in binary form must reproduce the original copyright notice,\r
+ this list of conditions and the following disclaimer in the documentation\r
+ and/or other materials provided with the distribution.\r
+* Neither the name of Intel Corporation nor the names of its contributors\r
+ may be used to endorse or promote products derived from this work without\r
+ specific prior written permission.\r
+\r
+THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION "AS IS"\r
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
+ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION BE LIABLE FOR ANY DIRECT,\r
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,\r
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\r
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY\r
+OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING\r
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,\r
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
+\r
+Authors:\r
+ Wang, Jing J <jing.j.wang@intel.com>\r
+\r
+*/\r
+#if defined(_WIN32)\r
+#if !defined(_CRT_SECURE_NO_WARNINGS)\r
+#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005\r
+#endif\r
+#else\r
+#ifdef __linux__\r
+#define _XOPEN_SOURCE 600 // For flockfile() on Linux\r
+#endif\r
+#define _LARGEFILE_SOURCE // Enable 64-bit file offsets\r
+#define __STDC_FORMAT_MACROS // <inttypes.h> wants this for C++\r
+#define __STDC_LIMIT_MACROS // C++ wants that for INT64_MAX\r
+#endif\r
+\r
+#if defined (_MSC_VER)\r
+// conditional expression is constant: introduced by FD_SET(..)\r
+#pragma warning (disable : 4127)\r
+// non-constant aggregate initializer: issued due to missing C99 support\r
+#pragma warning (disable : 4204)\r
+#endif\r
+\r
+// Disable WIN32_LEAN_AND_MEAN.\r
+// This makes windows.h always include winsock2.h\r
+#ifdef WIN32_LEAN_AND_MEAN\r
+#undef WIN32_LEAN_AND_MEAN\r
+#endif\r
+\r
+#if defined(__SYMBIAN32__)\r
+#define NO_SSL // SSL is not supported\r
+#define NO_CGI // CGI is not supported\r
+#define PATH_MAX FILENAME_MAX\r
+#endif // __SYMBIAN32__\r
+\r
+#ifndef _WIN32_WCE // Some ANSI #includes are not available on Windows CE\r
+#include <sys/types.h>\r
+#include <sys/stat.h>\r
+#include <errno.h>\r
+#include <signal.h>\r
+#include <fcntl.h>\r
+#endif // !_WIN32_WCE\r
+\r
+#include <time.h>\r
+#include <stdlib.h>\r
+#include <stdarg.h>\r
+#include <assert.h>\r
+#include <string.h>\r
+#include <ctype.h>\r
+#include <limits.h>\r
+#include <stddef.h>\r
+#include <stdio.h>\r
+\r
+#if defined(_WIN32) && !defined(__SYMBIAN32__) // Windows specific\r
+#undef _WIN32_WINNT\r
+#define _WIN32_WINNT 0x0400 // To make it link in VS2005\r
+#include <windows.h>\r
+\r
+#ifndef PATH_MAX\r
+#define PATH_MAX MAX_PATH\r
+#endif\r
+\r
+#ifndef _WIN32_WCE\r
+#include <process.h>\r
+#include <direct.h>\r
+#include <io.h>\r
+#else // _WIN32_WCE\r
+#define NO_CGI // WinCE has no pipes\r
+\r
+typedef long off_t;\r
+\r
+#define errno GetLastError()\r
+#define strerror(x) _ultoa(x, (char *) _alloca(sizeof(x) *3 ), 10)\r
+#endif // _WIN32_WCE\r
+\r
+#define MAKEUQUAD(lo, hi) ((uint64_t)(((uint32_t)(lo)) | \\r
+ ((uint64_t)((uint32_t)(hi))) << 32))\r
+#define RATE_DIFF 10000000 // 100 nsecs\r
+#define EPOCH_DIFF MAKEUQUAD(0xd53e8000, 0x019db1de)\r
+#define SYS2UNIX_TIME(lo, hi) \\r
+ (time_t) ((MAKEUQUAD((lo), (hi)) - EPOCH_DIFF) / RATE_DIFF)\r
+\r
+// Visual Studio 6 does not know __func__ or __FUNCTION__\r
+// The rest of MS compilers use __FUNCTION__, not C99 __func__\r
+// Also use _strtoui64 on modern M$ compilers\r
+#if defined(_MSC_VER) && _MSC_VER < 1300\r
+#define STRX(x) #x\r
+#define STR(x) STRX(x)\r
+#define __func__ __FILE__ ":" STR(__LINE__)\r
+#define strtoull(x, y, z) strtoul(x, y, z)\r
+#define strtoll(x, y, z) strtol(x, y, z)\r
+#else\r
+#define __func__ __FUNCTION__\r
+#define strtoull(x, y, z) _strtoui64(x, y, z)\r
+#define strtoll(x, y, z) _strtoi64(x, y, z)\r
+#endif // _MSC_VER\r
+\r
+#define ERRNO GetLastError()\r
+#define NO_SOCKLEN_T\r
+#define SSL_LIB "ssleay32.dll"\r
+#define CRYPTO_LIB "libeay32.dll"\r
+#define O_NONBLOCK 0\r
+#if !defined(EWOULDBLOCK)\r
+#define EWOULDBLOCK WSAEWOULDBLOCK\r
+#endif // !EWOULDBLOCK\r
+#define _POSIX_\r
+#define INT64_FMT "I64d"\r
+\r
+#define WINCDECL __cdecl\r
+#define SHUT_WR 1\r
+#define snprintf _snprintf\r
+#define vsnprintf _vsnprintf\r
+#define mg_sleep(x) Sleep(x)\r
+\r
+#define pipe(x) _pipe(x, MG_BUF_LEN, _O_BINARY)\r
+#ifndef popen\r
+#define popen(x, y) _popen(x, y)\r
+#endif\r
+#ifndef pclose\r
+#define pclose(x) _pclose(x)\r
+#endif\r
+#define close(x) _close(x)\r
+#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y))\r
+#define RTLD_LAZY 0\r
+#define fseeko(x, y, z) _lseeki64(_fileno(x), (y), (z))\r
+#define fdopen(x, y) _fdopen((x), (y))\r
+#define write(x, y, z) _write((x), (y), (unsigned) z)\r
+#define read(x, y, z) _read((x), (y), (unsigned) z)\r
+#define flockfile(x) EnterCriticalSection(&global_log_file_lock)\r
+#define funlockfile(x) LeaveCriticalSection(&global_log_file_lock)\r
+#define sleep(x) Sleep((x) * 1000)\r
+\r
+#if !defined(va_copy)\r
+#define va_copy(x, y) x = y\r
+#endif // !va_copy MINGW #defines va_copy\r
+\r
+#if !defined(fileno)\r
+#define fileno(x) _fileno(x)\r
+#endif // !fileno MINGW #defines fileno\r
+\r
+typedef HANDLE pthread_mutex_t;\r
+typedef struct {HANDLE signal, broadcast;} pthread_cond_t;\r
+typedef DWORD pthread_t;\r
+#define pid_t HANDLE // MINGW typedefs pid_t to int. Using #define here.\r
+\r
+static int pthread_mutex_lock(pthread_mutex_t *);\r
+static int pthread_mutex_unlock(pthread_mutex_t *);\r
+static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len);\r
+struct file;\r
+static char *mg_fgets(char *buf, size_t size, struct file *filep, char **p);\r
+\r
+#if defined(HAVE_STDINT)\r
+#include <stdint.h>\r
+#else\r
+typedef unsigned int uint32_t;\r
+typedef unsigned short uint16_t;\r
+typedef unsigned __int64 uint64_t;\r
+typedef __int64 int64_t;\r
+#define INT64_MAX 9223372036854775807\r
+#endif // HAVE_STDINT\r
+\r
+// POSIX dirent interface\r
+struct dirent {\r
+ char d_name[PATH_MAX];\r
+};\r
+\r
+typedef struct DIR {\r
+ HANDLE handle;\r
+ WIN32_FIND_DATAW info;\r
+ struct dirent result;\r
+} DIR;\r
+\r
+#ifndef HAVE_POLL\r
+struct pollfd {\r
+ int fd;\r
+ short events;\r
+ short revents;\r
+};\r
+#define POLLIN 1\r
+#endif\r
+\r
+\r
+// Mark required libraries\r
+#ifdef _MSC_VER\r
+#pragma comment(lib, "Ws2_32.lib")\r
+#endif\r
+\r
+#else // UNIX specific\r
+#include <sys/wait.h>\r
+#include <sys/socket.h>\r
+#include <sys/poll.h>\r
+#include <netinet/in.h>\r
+#include <arpa/inet.h>\r
+#include <sys/time.h>\r
+#include <stdint.h>\r
+#include <inttypes.h>\r
+#include <netdb.h>\r
+\r
+#include <pwd.h>\r
+#include <unistd.h>\r
+#include <dirent.h>\r
+#if !defined(NO_SSL_DL) && !defined(NO_SSL)\r
+#include <dlfcn.h>\r
+#endif\r
+#include <pthread.h>\r
+#if defined(__MACH__)\r
+#define SSL_LIB "libssl.dylib"\r
+#define CRYPTO_LIB "libcrypto.dylib"\r
+#else\r
+#if !defined(SSL_LIB)\r
+#define SSL_LIB "libssl.so"\r
+#endif\r
+#if !defined(CRYPTO_LIB)\r
+#define CRYPTO_LIB "libcrypto.so"\r
+#endif\r
+#endif\r
+#ifndef O_BINARY\r
+#define O_BINARY 0\r
+#endif // O_BINARY\r
+#define closesocket(a) close(a)\r
+#define mg_mkdir(x, y) mkdir(x, y)\r
+#define mg_remove(x) remove(x)\r
+#define mg_sleep(x) usleep((x) * 1000)\r
+#define ERRNO errno\r
+#define INVALID_SOCKET (-1)\r
+#define INT64_FMT PRId64\r
+typedef int SOCKET;\r
+#define WINCDECL\r
+\r
+#endif // End of Windows and UNIX specific includes\r
+\r
+#include "mongoose.h"\r
+\r
+#define MONGOOSE_VERSION "3.8"\r
+#define PASSWORDS_FILE_NAME ".htpasswd"\r
+#define CGI_ENVIRONMENT_SIZE 4096\r
+#define MAX_CGI_ENVIR_VARS 64\r
+#define MG_BUF_LEN 8192\r
+#define MAX_REQUEST_SIZE 16384\r
+#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))\r
+\r
+#ifdef _WIN32\r
+static CRITICAL_SECTION global_log_file_lock;\r
+static pthread_t pthread_self(void) {\r
+ return GetCurrentThreadId();\r
+}\r
+#endif // _WIN32\r
+\r
+#ifdef DEBUG_TRACE\r
+#undef DEBUG_TRACE\r
+#define DEBUG_TRACE(x)\r
+#else\r
+#if defined(DEBUG)\r
+#define DEBUG_TRACE(x) do { \\r
+ flockfile(stdout); \\r
+ printf("*** %lu.%p.%s.%d: ", \\r
+ (unsigned long) time(NULL), (void *) pthread_self(), \\r
+ __func__, __LINE__); \\r
+ printf x; \\r
+ putchar('\n'); \\r
+ fflush(stdout); \\r
+ funlockfile(stdout); \\r
+} while (0)\r
+#else\r
+#define DEBUG_TRACE(x)\r
+#endif // DEBUG\r
+#endif // DEBUG_TRACE\r
+\r
+// Darwin prior to 7.0 and Win32 do not have socklen_t\r
+#ifdef NO_SOCKLEN_T\r
+typedef int socklen_t;\r
+#endif // NO_SOCKLEN_T\r
+#define _DARWIN_UNLIMITED_SELECT\r
+\r
+#if !defined(MSG_NOSIGNAL)\r
+#define MSG_NOSIGNAL 0\r
+#endif\r
+\r
+#if !defined(SOMAXCONN)\r
+#define SOMAXCONN 100\r
+#endif\r
+\r
+#if !defined(PATH_MAX)\r
+#define PATH_MAX 4096\r
+#endif\r
+\r
+static const char *http_500_error = "Internal Server Error";\r
+\r
+#if defined(NO_SSL_DL)\r
+#include <openssl/ssl.h>\r
+#else\r
+// SSL loaded dynamically from DLL.\r
+// I put the prototypes here to be independent from OpenSSL source installation.\r
+typedef struct ssl_st SSL;\r
+typedef struct ssl_method_st SSL_METHOD;\r
+typedef struct ssl_ctx_st SSL_CTX;\r
+\r
+struct ssl_func {\r
+ const char *name; // SSL function name\r
+ void (*ptr)(void); // Function pointer\r
+};\r
+\r
+#define SSL_free (* (void (*)(SSL *)) ssl_sw[0].ptr)\r
+#define SSL_accept (* (int (*)(SSL *)) ssl_sw[1].ptr)\r
+#define SSL_connect (* (int (*)(SSL *)) ssl_sw[2].ptr)\r
+#define SSL_read (* (int (*)(SSL *, void *, int)) ssl_sw[3].ptr)\r
+#define SSL_write (* (int (*)(SSL *, const void *,int)) ssl_sw[4].ptr)\r
+#define SSL_get_error (* (int (*)(SSL *, int)) ssl_sw[5].ptr)\r
+#define SSL_set_fd (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)\r
+#define SSL_new (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)\r
+#define SSL_CTX_new (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)\r
+#define SSLv23_server_method (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)\r
+#define SSL_library_init (* (int (*)(void)) ssl_sw[10].ptr)\r
+#define SSL_CTX_use_PrivateKey_file (* (int (*)(SSL_CTX *, \\r
+ const char *, int)) ssl_sw[11].ptr)\r
+#define SSL_CTX_use_certificate_file (* (int (*)(SSL_CTX *, \\r
+ const char *, int)) ssl_sw[12].ptr)\r
+#define SSL_CTX_set_default_passwd_cb \\r
+ (* (void (*)(SSL_CTX *, mg_callback_t)) ssl_sw[13].ptr)\r
+#define SSL_CTX_free (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)\r
+#define SSL_load_error_strings (* (void (*)(void)) ssl_sw[15].ptr)\r
+#define SSL_CTX_use_certificate_chain_file \\r
+ (* (int (*)(SSL_CTX *, const char *)) ssl_sw[16].ptr)\r
+#define SSLv23_client_method (* (SSL_METHOD * (*)(void)) ssl_sw[17].ptr)\r
+#define SSL_pending (* (int (*)(SSL *)) ssl_sw[18].ptr)\r
+#define SSL_CTX_set_verify (* (void (*)(SSL_CTX *, int, int)) ssl_sw[19].ptr)\r
+#define SSL_shutdown (* (int (*)(SSL *)) ssl_sw[20].ptr)\r
+\r
+#define CRYPTO_num_locks (* (int (*)(void)) crypto_sw[0].ptr)\r
+#define CRYPTO_set_locking_callback \\r
+ (* (void (*)(void (*)(int, int, const char *, int))) crypto_sw[1].ptr)\r
+#define CRYPTO_set_id_callback \\r
+ (* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)\r
+#define ERR_get_error (* (unsigned long (*)(void)) crypto_sw[3].ptr)\r
+#define ERR_error_string (* (char * (*)(unsigned long,char *)) crypto_sw[4].ptr)\r
+\r
+// set_ssl_option() function updates this array.\r
+// It loads SSL library dynamically and changes NULLs to the actual addresses\r
+// of respective functions. The macros above (like SSL_connect()) are really\r
+// just calling these functions indirectly via the pointer.\r
+static struct ssl_func ssl_sw[] = {\r
+ {"SSL_free", NULL},\r
+ {"SSL_accept", NULL},\r
+ {"SSL_connect", NULL},\r
+ {"SSL_read", NULL},\r
+ {"SSL_write", NULL},\r
+ {"SSL_get_error", NULL},\r
+ {"SSL_set_fd", NULL},\r
+ {"SSL_new", NULL},\r
+ {"SSL_CTX_new", NULL},\r
+ {"SSLv23_server_method", NULL},\r
+ {"SSL_library_init", NULL},\r
+ {"SSL_CTX_use_PrivateKey_file", NULL},\r
+ {"SSL_CTX_use_certificate_file",NULL},\r
+ {"SSL_CTX_set_default_passwd_cb",NULL},\r
+ {"SSL_CTX_free", NULL},\r
+ {"SSL_load_error_strings", NULL},\r
+ {"SSL_CTX_use_certificate_chain_file", NULL},\r
+ {"SSLv23_client_method", NULL},\r
+ {"SSL_pending", NULL},\r
+ {"SSL_CTX_set_verify", NULL},\r
+ {"SSL_shutdown", NULL},\r
+ {NULL, NULL}\r
+};\r
+\r
+// Similar array as ssl_sw. These functions could be located in different lib.\r
+#if !defined(NO_SSL)\r
+static struct ssl_func crypto_sw[] = {\r
+ {"CRYPTO_num_locks", NULL},\r
+ {"CRYPTO_set_locking_callback", NULL},\r
+ {"CRYPTO_set_id_callback", NULL},\r
+ {"ERR_get_error", NULL},\r
+ {"ERR_error_string", NULL},\r
+ {NULL, NULL}\r
+};\r
+#endif // NO_SSL\r
+#endif // NO_SSL_DL\r
+\r
+static const char *month_names[] = {\r
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",\r
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"\r
+};\r
+\r
+// Unified socket address. For IPv6 support, add IPv6 address structure\r
+// in the union u.\r
+union usa {\r
+ struct sockaddr sa;\r
+ struct sockaddr_in sin;\r
+#if defined(USE_IPV6)\r
+ struct sockaddr_in6 sin6;\r
+#endif\r
+};\r
+\r
+// Describes a string (chunk of memory).\r
+struct vec {\r
+ const char *ptr;\r
+ size_t len;\r
+};\r
+\r
+struct file {\r
+ int is_directory;\r
+ time_t modification_time;\r
+ int64_t size;\r
+ FILE *fp;\r
+ const char *membuf; // Non-NULL if file data is in memory\r
+};\r
+#define STRUCT_FILE_INITIALIZER {0, 0, 0, NULL, NULL}\r
+\r
+// Describes listening socket, or socket which was accept()-ed by the master\r
+// thread and queued for future handling by the worker thread.\r
+struct socket {\r
+ SOCKET sock; // Listening socket\r
+ union usa lsa; // Local socket address\r
+ union usa rsa; // Remote socket address\r
+ unsigned is_ssl:1; // Is port SSL-ed\r
+ unsigned ssl_redir:1; // Is port supposed to redirect everything to SSL port\r
+};\r
+\r
+// NOTE(lsm): this enum shoulds be in sync with the config_options below.\r
+enum {\r
+ CGI_EXTENSIONS, CGI_ENVIRONMENT, PUT_DELETE_PASSWORDS_FILE, CGI_INTERPRETER,\r
+ PROTECT_URI, AUTHENTICATION_DOMAIN, SSI_EXTENSIONS, THROTTLE,\r
+ ACCESS_LOG_FILE, ENABLE_DIRECTORY_LISTING, ERROR_LOG_FILE,\r
+ GLOBAL_PASSWORDS_FILE, INDEX_FILES, ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST,\r
+ EXTRA_MIME_TYPES, LISTENING_PORTS, DOCUMENT_ROOT, SSL_CERTIFICATE,\r
+ NUM_THREADS, RUN_AS_USER, REWRITE, HIDE_FILES, REQUEST_TIMEOUT,\r
+ NUM_OPTIONS\r
+};\r
+\r
+static const char *config_options[] = {\r
+ "cgi_pattern", "**.cgi$|**.pl$|**.php$",\r
+ "cgi_environment", NULL,\r
+ "put_delete_auth_file", NULL,\r
+ "cgi_interpreter", NULL,\r
+ "protect_uri", NULL,\r
+ "authentication_domain", "mydomain.com",\r
+ "ssi_pattern", "**.shtml$|**.shtm$",\r
+ "throttle", NULL,\r
+ "access_log_file", NULL,\r
+ "enable_directory_listing", "yes",\r
+ "error_log_file", NULL,\r
+ "global_auth_file", NULL,\r
+ "index_files",\r
+ "index.html,index.htm,index.cgi,index.shtml,index.php,index.lp",\r
+ "enable_keep_alive", "no",\r
+ "access_control_list", NULL,\r
+ "extra_mime_types", NULL,\r
+ "listening_ports", "8080",\r
+ "document_root", ".",\r
+ "ssl_certificate", NULL,\r
+ "num_threads", "50",\r
+ "run_as_user", NULL,\r
+ "url_rewrite_patterns", NULL,\r
+ "hide_files_patterns", NULL,\r
+ "request_timeout_ms", "30000",\r
+ NULL\r
+};\r
+\r
+struct mg_context {\r
+ volatile int stop_flag; // Should we stop event loop\r
+ SSL_CTX *ssl_ctx; // SSL context\r
+ char *config[NUM_OPTIONS]; // Mongoose configuration parameters\r
+ struct mg_callbacks callbacks; // User-defined callback function\r
+ void *user_data; // User-defined data\r
+\r
+ struct socket *listening_sockets;\r
+ int num_listening_sockets;\r
+\r
+ volatile int num_threads; // Number of threads\r
+ pthread_mutex_t mutex; // Protects (max|num)_threads\r
+ pthread_cond_t cond; // Condvar for tracking workers terminations\r
+\r
+ struct socket queue[20]; // Accepted sockets\r
+ volatile int sq_head; // Head of the socket queue\r
+ volatile int sq_tail; // Tail of the socket queue\r
+ pthread_cond_t sq_full; // Signaled when socket is produced\r
+ pthread_cond_t sq_empty; // Signaled when socket is consumed\r
+};\r
+\r
+struct mg_connection {\r
+ struct mg_request_info request_info;\r
+ struct mg_context *ctx;\r
+ SSL *ssl; // SSL descriptor\r
+ SSL_CTX *client_ssl_ctx; // SSL context for client connections\r
+ struct socket client; // Connected client\r
+ time_t birth_time; // Time when request was received\r
+ int64_t num_bytes_sent; // Total bytes sent to client\r
+ int64_t content_len; // Content-Length header value\r
+ int64_t consumed_content; // How many bytes of content have been read\r
+ char *buf; // Buffer for received data\r
+ char *path_info; // PATH_INFO part of the URL\r
+ int must_close; // 1 if connection must be closed\r
+ int buf_size; // Buffer size\r
+ int request_len; // Size of the request + headers in a buffer\r
+ int data_len; // Total size of data in a buffer\r
+ int status_code; // HTTP reply status code, e.g. 200\r
+ int throttle; // Throttling, bytes/sec. <= 0 means no throttle\r
+ time_t last_throttle_time; // Last time throttled data was sent\r
+ int64_t last_throttle_bytes;// Bytes sent this second\r
+};\r
+\r
+// Directory entry\r
+struct de {\r
+ struct mg_connection *conn;\r
+ char *file_name;\r
+ struct file file;\r
+};\r
+\r
+const char **mg_get_valid_option_names(void) {\r
+ return config_options;\r
+}\r
+\r
+static int is_file_in_memory(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ size_t size = 0;\r
+ if ((filep->membuf = conn->ctx->callbacks.open_file == NULL ? NULL :\r
+ conn->ctx->callbacks.open_file(conn, path, &size)) != NULL) {\r
+ // NOTE: override filep->size only on success. Otherwise, it might break\r
+ // constructs like if (!mg_stat() || !mg_fopen()) ...\r
+ filep->size = size;\r
+ }\r
+ return filep->membuf != NULL;\r
+}\r
+\r
+static int is_file_opened(const struct file *filep) {\r
+ return filep->membuf != NULL || filep->fp != NULL;\r
+}\r
+\r
+static int mg_fopen(struct mg_connection *conn, const char *path,\r
+ const char *mode, struct file *filep) {\r
+ if (!is_file_in_memory(conn, path, filep)) {\r
+#ifdef _WIN32\r
+ wchar_t wbuf[PATH_MAX], wmode[20];\r
+ to_unicode(path, wbuf, ARRAY_SIZE(wbuf));\r
+ MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode));\r
+ filep->fp = _wfopen(wbuf, wmode);\r
+#else\r
+ filep->fp = fopen(path, mode);\r
+#endif\r
+ }\r
+\r
+ return is_file_opened(filep);\r
+}\r
+\r
+static void mg_fclose(struct file *filep) {\r
+ if (filep != NULL && filep->fp != NULL) {\r
+ fclose(filep->fp);\r
+ }\r
+}\r
+\r
+static int get_option_index(const char *name) {\r
+ int i;\r
+\r
+ for (i = 0; config_options[i * 2] != NULL; i++) {\r
+ if (strcmp(config_options[i * 2], name) == 0) {\r
+ return i;\r
+ }\r
+ }\r
+ return -1;\r
+}\r
+\r
+const char *mg_get_option(const struct mg_context *ctx, const char *name) {\r
+ int i;\r
+ if ((i = get_option_index(name)) == -1) {\r
+ return NULL;\r
+ } else if (ctx->config[i] == NULL) {\r
+ return "";\r
+ } else {\r
+ return ctx->config[i];\r
+ }\r
+}\r
+\r
+static void sockaddr_to_string(char *buf, size_t len,\r
+ const union usa *usa) {\r
+ buf[0] = '\0';\r
+#if defined(USE_IPV6)\r
+ inet_ntop(usa->sa.sa_family, usa->sa.sa_family == AF_INET ?\r
+ (void *) &usa->sin.sin_addr :\r
+ (void *) &usa->sin6.sin6_addr, buf, len);\r
+#elif defined(_WIN32)\r
+ // Only Windoze Vista (and newer) have inet_ntop()\r
+ strncpy(buf, inet_ntoa(usa->sin.sin_addr), len);\r
+#else\r
+ inet_ntop(usa->sa.sa_family, (void *) &usa->sin.sin_addr, buf, len);\r
+#endif\r
+}\r
+\r
+static void cry(struct mg_connection *conn,\r
+ PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);\r
+\r
+// Print error message to the opened error log stream.\r
+static void cry(struct mg_connection *conn, const char *fmt, ...) {\r
+ char buf[MG_BUF_LEN], src_addr[20];\r
+ va_list ap;\r
+ FILE *fp;\r
+ time_t timestamp;\r
+\r
+ va_start(ap, fmt);\r
+ (void) vsnprintf(buf, sizeof(buf), fmt, ap);\r
+ va_end(ap);\r
+\r
+ // Do not lock when getting the callback value, here and below.\r
+ // I suppose this is fine, since function cannot disappear in the\r
+ // same way string option can.\r
+ if (conn->ctx->callbacks.log_message == NULL ||\r
+ conn->ctx->callbacks.log_message(conn, buf) == 0) {\r
+ fp = conn->ctx == NULL || conn->ctx->config[ERROR_LOG_FILE] == NULL ? NULL :\r
+ fopen(conn->ctx->config[ERROR_LOG_FILE], "a+");\r
+\r
+ if (fp != NULL) {\r
+ flockfile(fp);\r
+ timestamp = time(NULL);\r
+\r
+ sockaddr_to_string(src_addr, sizeof(src_addr), &conn->client.rsa);\r
+ fprintf(fp, "[%010lu] [error] [client %s] ", (unsigned long) timestamp,\r
+ src_addr);\r
+\r
+ if (conn->request_info.request_method != NULL) {\r
+ fprintf(fp, "%s %s: ", conn->request_info.request_method,\r
+ conn->request_info.uri);\r
+ }\r
+\r
+ fprintf(fp, "%s", buf);\r
+ fputc('\n', fp);\r
+ funlockfile(fp);\r
+ fclose(fp);\r
+ }\r
+ }\r
+}\r
+\r
+// Return fake connection structure. Used for logging, if connection\r
+// is not applicable at the moment of logging.\r
+static struct mg_connection *fc(struct mg_context *ctx) {\r
+ static struct mg_connection fake_connection;\r
+ fake_connection.ctx = ctx;\r
+ return &fake_connection;\r
+}\r
+\r
+const char *mg_version(void) {\r
+ return MONGOOSE_VERSION;\r
+}\r
+\r
+struct mg_request_info *mg_get_request_info(struct mg_connection *conn) {\r
+ return &conn->request_info;\r
+}\r
+\r
+static void mg_strlcpy(register char *dst, register const char *src, size_t n) {\r
+ for (; *src != '\0' && n > 1; n--) {\r
+ *dst++ = *src++;\r
+ }\r
+ *dst = '\0';\r
+}\r
+\r
+static int lowercase(const char *s) {\r
+ return tolower(* (const unsigned char *) s);\r
+}\r
+\r
+static int mg_strncasecmp(const char *s1, const char *s2, size_t len) {\r
+ int diff = 0;\r
+\r
+ if (len > 0)\r
+ do {\r
+ diff = lowercase(s1++) - lowercase(s2++);\r
+ } while (diff == 0 && s1[-1] != '\0' && --len > 0);\r
+\r
+ return diff;\r
+}\r
+\r
+static int mg_strcasecmp(const char *s1, const char *s2) {\r
+ int diff;\r
+\r
+ do {\r
+ diff = lowercase(s1++) - lowercase(s2++);\r
+ } while (diff == 0 && s1[-1] != '\0');\r
+\r
+ return diff;\r
+}\r
+\r
+static char * mg_strndup(const char *ptr, size_t len) {\r
+ char *p;\r
+\r
+ if ((p = (char *) malloc(len + 1)) != NULL) {\r
+ mg_strlcpy(p, ptr, len + 1);\r
+ }\r
+\r
+ return p;\r
+}\r
+\r
+static char * mg_strdup(const char *str) {\r
+ return mg_strndup(str, strlen(str));\r
+}\r
+\r
+static const char *mg_strcasestr(const char *big_str, const char *small_str) {\r
+ int i, big_len = strlen(big_str), small_len = strlen(small_str);\r
+\r
+ for (i = 0; i <= big_len - small_len; i++) {\r
+ if (mg_strncasecmp(big_str + i, small_str, small_len) == 0) {\r
+ return big_str + i;\r
+ }\r
+ }\r
+\r
+ return NULL;\r
+}\r
+\r
+// Like snprintf(), but never returns negative value, or a value\r
+// that is larger than a supplied buffer.\r
+// Thanks to Adam Zeldis to pointing snprintf()-caused vulnerability\r
+// in his audit report.\r
+static int mg_vsnprintf(struct mg_connection *conn, char *buf, size_t buflen,\r
+ const char *fmt, va_list ap) {\r
+ int n;\r
+\r
+ if (buflen == 0)\r
+ return 0;\r
+\r
+ n = vsnprintf(buf, buflen, fmt, ap);\r
+\r
+ if (n < 0) {\r
+ cry(conn, "vsnprintf error");\r
+ n = 0;\r
+ } else if (n >= (int) buflen) {\r
+ cry(conn, "truncating vsnprintf buffer: [%.*s]",\r
+ n > 200 ? 200 : n, buf);\r
+ n = (int) buflen - 1;\r
+ }\r
+ buf[n] = '\0';\r
+\r
+ return n;\r
+}\r
+\r
+static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen,\r
+ PRINTF_FORMAT_STRING(const char *fmt), ...)\r
+ PRINTF_ARGS(4, 5);\r
+\r
+static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen,\r
+ const char *fmt, ...) {\r
+ va_list ap;\r
+ int n;\r
+\r
+ va_start(ap, fmt);\r
+ n = mg_vsnprintf(conn, buf, buflen, fmt, ap);\r
+ va_end(ap);\r
+\r
+ return n;\r
+}\r
+\r
+// Skip the characters until one of the delimiters characters found.\r
+// 0-terminate resulting word. Skip the delimiter and following whitespaces.\r
+// Advance pointer to buffer to the next word. Return found 0-terminated word.\r
+// Delimiters can be quoted with quotechar.\r
+static char *skip_quoted(char **buf, const char *delimiters,\r
+ const char *whitespace, char quotechar) {\r
+ char *p, *begin_word, *end_word, *end_whitespace;\r
+\r
+ begin_word = *buf;\r
+ end_word = begin_word + strcspn(begin_word, delimiters);\r
+\r
+ // Check for quotechar\r
+ if (end_word > begin_word) {\r
+ p = end_word - 1;\r
+ while (*p == quotechar) {\r
+ // If there is anything beyond end_word, copy it\r
+ if (*end_word == '\0') {\r
+ *p = '\0';\r
+ break;\r
+ } else {\r
+ size_t end_off = strcspn(end_word + 1, delimiters);\r
+ memmove (p, end_word, end_off + 1);\r
+ p += end_off; // p must correspond to end_word - 1\r
+ end_word += end_off + 1;\r
+ }\r
+ }\r
+ for (p++; p < end_word; p++) {\r
+ *p = '\0';\r
+ }\r
+ }\r
+\r
+ if (*end_word == '\0') {\r
+ *buf = end_word;\r
+ } else {\r
+ end_whitespace = end_word + 1 + strspn(end_word + 1, whitespace);\r
+\r
+ for (p = end_word; p < end_whitespace; p++) {\r
+ *p = '\0';\r
+ }\r
+\r
+ *buf = end_whitespace;\r
+ }\r
+\r
+ return begin_word;\r
+}\r
+\r
+// Simplified version of skip_quoted without quote char\r
+// and whitespace == delimiters\r
+static char *skip(char **buf, const char *delimiters) {\r
+ return skip_quoted(buf, delimiters, delimiters, 0);\r
+}\r
+\r
+\r
+// Return HTTP header value, or NULL if not found.\r
+static const char *get_header(const struct mg_request_info *ri,\r
+ const char *name) {\r
+ int i;\r
+\r
+ for (i = 0; i < ri->num_headers; i++)\r
+ if (!mg_strcasecmp(name, ri->http_headers[i].name))\r
+ return ri->http_headers[i].value;\r
+\r
+ return NULL;\r
+}\r
+\r
+const char *mg_get_header(const struct mg_connection *conn, const char *name) {\r
+ return get_header(&conn->request_info, name);\r
+}\r
+\r
+// A helper function for traversing a comma separated list of values.\r
+// It returns a list pointer shifted to the next value, or NULL if the end\r
+// of the list found.\r
+// Value is stored in val vector. If value has form "x=y", then eq_val\r
+// vector is initialized to point to the "y" part, and val vector length\r
+// is adjusted to point only to "x".\r
+static const char *next_option(const char *list, struct vec *val,\r
+ struct vec *eq_val) {\r
+ if (list == NULL || *list == '\0') {\r
+ // End of the list\r
+ list = NULL;\r
+ } else {\r
+ val->ptr = list;\r
+ if ((list = strchr(val->ptr, ',')) != NULL) {\r
+ // Comma found. Store length and shift the list ptr\r
+ val->len = list - val->ptr;\r
+ list++;\r
+ } else {\r
+ // This value is the last one\r
+ list = val->ptr + strlen(val->ptr);\r
+ val->len = list - val->ptr;\r
+ }\r
+\r
+ if (eq_val != NULL) {\r
+ // Value has form "x=y", adjust pointers and lengths\r
+ // so that val points to "x", and eq_val points to "y".\r
+ eq_val->len = 0;\r
+ eq_val->ptr = (const char *) memchr(val->ptr, '=', val->len);\r
+ if (eq_val->ptr != NULL) {\r
+ eq_val->ptr++; // Skip over '=' character\r
+ eq_val->len = val->ptr + val->len - eq_val->ptr;\r
+ val->len = (eq_val->ptr - val->ptr) - 1;\r
+ }\r
+ }\r
+ }\r
+\r
+ return list;\r
+}\r
+\r
+static int match_prefix(const char *pattern, int pattern_len, const char *str) {\r
+ const char *or_str;\r
+ int i, j, len, res;\r
+\r
+ if ((or_str = (const char *) memchr(pattern, '|', pattern_len)) != NULL) {\r
+ res = match_prefix(pattern, or_str - pattern, str);\r
+ return res > 0 ? res :\r
+ match_prefix(or_str + 1, (pattern + pattern_len) - (or_str + 1), str);\r
+ }\r
+\r
+ i = j = 0;\r
+ res = -1;\r
+ for (; i < pattern_len; i++, j++) {\r
+ if (pattern[i] == '?' && str[j] != '\0') {\r
+ continue;\r
+ } else if (pattern[i] == '$') {\r
+ return str[j] == '\0' ? j : -1;\r
+ } else if (pattern[i] == '*') {\r
+ i++;\r
+ if (pattern[i] == '*') {\r
+ i++;\r
+ len = (int) strlen(str + j);\r
+ } else {\r
+ len = (int) strcspn(str + j, "/");\r
+ }\r
+ if (i == pattern_len) {\r
+ return j + len;\r
+ }\r
+ do {\r
+ res = match_prefix(pattern + i, pattern_len - i, str + j + len);\r
+ } while (res == -1 && len-- > 0);\r
+ return res == -1 ? -1 : j + res + len;\r
+ } else if (pattern[i] != str[j]) {\r
+ return -1;\r
+ }\r
+ }\r
+ return j;\r
+}\r
+\r
+// HTTP 1.1 assumes keep alive if "Connection:" header is not set\r
+// This function must tolerate situations when connection info is not\r
+// set up, for example if request parsing failed.\r
+static int should_keep_alive(const struct mg_connection *conn) {\r
+ const char *http_version = conn->request_info.http_version;\r
+ const char *header = mg_get_header(conn, "Connection");\r
+ if (conn->must_close ||\r
+ conn->status_code == 401 ||\r
+ mg_strcasecmp(conn->ctx->config[ENABLE_KEEP_ALIVE], "yes") != 0 ||\r
+ (header != NULL && mg_strcasecmp(header, "keep-alive") != 0) ||\r
+ (header == NULL && http_version && strcmp(http_version, "1.1"))) {\r
+ return 0;\r
+ }\r
+ return 1;\r
+}\r
+\r
+static const char *suggest_connection_header(const struct mg_connection *conn) {\r
+ return should_keep_alive(conn) ? "keep-alive" : "close";\r
+}\r
+\r
+static void send_http_error(struct mg_connection *, int, const char *,\r
+ PRINTF_FORMAT_STRING(const char *fmt), ...)\r
+ PRINTF_ARGS(4, 5);\r
+\r
+\r
+static void send_http_error(struct mg_connection *conn, int status,\r
+ const char *reason, const char *fmt, ...) {\r
+ char buf[MG_BUF_LEN];\r
+ va_list ap;\r
+ int len = 0;\r
+\r
+ conn->status_code = status;\r
+ if (conn->ctx->callbacks.http_error == NULL ||\r
+ conn->ctx->callbacks.http_error(conn, status)) {\r
+ buf[0] = '\0';\r
+\r
+ // Errors 1xx, 204 and 304 MUST NOT send a body\r
+ if (status > 199 && status != 204 && status != 304) {\r
+ len = mg_snprintf(conn, buf, sizeof(buf), "Error %d: %s", status, reason);\r
+ buf[len++] = '\n';\r
+\r
+ va_start(ap, fmt);\r
+ len += mg_vsnprintf(conn, buf + len, sizeof(buf) - len, fmt, ap);\r
+ va_end(ap);\r
+ }\r
+ DEBUG_TRACE(("[%s]", buf));\r
+\r
+ mg_printf(conn, "HTTP/1.1 %d %s\r\n"\r
+ "Content-Length: %d\r\n"\r
+ "Connection: %s\r\n\r\n", status, reason, len,\r
+ suggest_connection_header(conn));\r
+ conn->num_bytes_sent += mg_printf(conn, "%s", buf);\r
+ }\r
+}\r
+\r
+#if defined(_WIN32) && !defined(__SYMBIAN32__)\r
+static int pthread_mutex_init(pthread_mutex_t *mutex, void *unused) {\r
+ (void) unused;\r
+ *mutex = CreateMutex(NULL, FALSE, NULL);\r
+ return *mutex == NULL ? -1 : 0;\r
+}\r
+\r
+static int pthread_mutex_destroy(pthread_mutex_t *mutex) {\r
+ return CloseHandle(*mutex) == 0 ? -1 : 0;\r
+}\r
+\r
+static int pthread_mutex_lock(pthread_mutex_t *mutex) {\r
+ return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;\r
+}\r
+\r
+static int pthread_mutex_unlock(pthread_mutex_t *mutex) {\r
+ return ReleaseMutex(*mutex) == 0 ? -1 : 0;\r
+}\r
+\r
+static int pthread_cond_init(pthread_cond_t *cv, const void *unused) {\r
+ (void) unused;\r
+ cv->signal = CreateEvent(NULL, FALSE, FALSE, NULL);\r
+ cv->broadcast = CreateEvent(NULL, TRUE, FALSE, NULL);\r
+ return cv->signal != NULL && cv->broadcast != NULL ? 0 : -1;\r
+}\r
+\r
+static int pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) {\r
+ HANDLE handles[] = {cv->signal, cv->broadcast};\r
+ ReleaseMutex(*mutex);\r
+ WaitForMultipleObjects(2, handles, FALSE, INFINITE);\r
+ return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1;\r
+}\r
+\r
+static int pthread_cond_signal(pthread_cond_t *cv) {\r
+ return SetEvent(cv->signal) == 0 ? -1 : 0;\r
+}\r
+\r
+static int pthread_cond_broadcast(pthread_cond_t *cv) {\r
+ // Implementation with PulseEvent() has race condition, see\r
+ // http://www.cs.wustl.edu/~schmidt/win32-cv-1.html\r
+ return PulseEvent(cv->broadcast) == 0 ? -1 : 0;\r
+}\r
+\r
+static int pthread_cond_destroy(pthread_cond_t *cv) {\r
+ return CloseHandle(cv->signal) && CloseHandle(cv->broadcast) ? 0 : -1;\r
+}\r
+\r
+// For Windows, change all slashes to backslashes in path names.\r
+static void change_slashes_to_backslashes(char *path) {\r
+ int i;\r
+\r
+ for (i = 0; path[i] != '\0'; i++) {\r
+ if (path[i] == '/')\r
+ path[i] = '\\';\r
+ // i > 0 check is to preserve UNC paths, like \\server\file.txt\r
+ if (path[i] == '\\' && i > 0)\r
+ while (path[i + 1] == '\\' || path[i + 1] == '/')\r
+ (void) memmove(path + i + 1,\r
+ path + i + 2, strlen(path + i + 1));\r
+ }\r
+}\r
+\r
+// Encode 'path' which is assumed UTF-8 string, into UNICODE string.\r
+// wbuf and wbuf_len is a target buffer and its length.\r
+static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len) {\r
+ char buf[PATH_MAX], buf2[PATH_MAX];\r
+\r
+ mg_strlcpy(buf, path, sizeof(buf));\r
+ change_slashes_to_backslashes(buf);\r
+\r
+ // Convert to Unicode and back. If doubly-converted string does not\r
+ // match the original, something is fishy, reject.\r
+ memset(wbuf, 0, wbuf_len * sizeof(wchar_t));\r
+ MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len);\r
+ WideCharToMultiByte(CP_UTF8, 0, wbuf, (int) wbuf_len, buf2, sizeof(buf2),\r
+ NULL, NULL);\r
+ if (strcmp(buf, buf2) != 0) {\r
+ wbuf[0] = L'\0';\r
+ }\r
+}\r
+\r
+#if defined(_WIN32_WCE)\r
+static time_t time(time_t *ptime) {\r
+ time_t t;\r
+ SYSTEMTIME st;\r
+ FILETIME ft;\r
+\r
+ GetSystemTime(&st);\r
+ SystemTimeToFileTime(&st, &ft);\r
+ t = SYS2UNIX_TIME(ft.dwLowDateTime, ft.dwHighDateTime);\r
+\r
+ if (ptime != NULL) {\r
+ *ptime = t;\r
+ }\r
+\r
+ return t;\r
+}\r
+\r
+static struct tm *localtime(const time_t *ptime, struct tm *ptm) {\r
+ int64_t t = ((int64_t) *ptime) * RATE_DIFF + EPOCH_DIFF;\r
+ FILETIME ft, lft;\r
+ SYSTEMTIME st;\r
+ TIME_ZONE_INFORMATION tzinfo;\r
+\r
+ if (ptm == NULL) {\r
+ return NULL;\r
+ }\r
+\r
+ * (int64_t *) &ft = t;\r
+ FileTimeToLocalFileTime(&ft, &lft);\r
+ FileTimeToSystemTime(&lft, &st);\r
+ ptm->tm_year = st.wYear - 1900;\r
+ ptm->tm_mon = st.wMonth - 1;\r
+ ptm->tm_wday = st.wDayOfWeek;\r
+ ptm->tm_mday = st.wDay;\r
+ ptm->tm_hour = st.wHour;\r
+ ptm->tm_min = st.wMinute;\r
+ ptm->tm_sec = st.wSecond;\r
+ ptm->tm_yday = 0; // hope nobody uses this\r
+ ptm->tm_isdst =\r
+ GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_DAYLIGHT ? 1 : 0;\r
+\r
+ return ptm;\r
+}\r
+\r
+static struct tm *gmtime(const time_t *ptime, struct tm *ptm) {\r
+ // FIXME(lsm): fix this.\r
+ return localtime(ptime, ptm);\r
+}\r
+\r
+static size_t strftime(char *dst, size_t dst_size, const char *fmt,\r
+ const struct tm *tm) {\r
+ (void) snprintf(dst, dst_size, "implement strftime() for WinCE");\r
+ return 0;\r
+}\r
+#endif\r
+\r
+// Windows happily opens files with some garbage at the end of file name.\r
+// For example, fopen("a.cgi ", "r") on Windows successfully opens\r
+// "a.cgi", despite one would expect an error back.\r
+// This function returns non-0 if path ends with some garbage.\r
+static int path_cannot_disclose_cgi(const char *path) {\r
+ static const char *allowed_last_characters = "_-";\r
+ int last = path[strlen(path) - 1];\r
+ return isalnum(last) || strchr(allowed_last_characters, last) != NULL;\r
+}\r
+\r
+static int mg_stat(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ wchar_t wbuf[PATH_MAX];\r
+ WIN32_FILE_ATTRIBUTE_DATA info;\r
+\r
+ if (!is_file_in_memory(conn, path, filep)) {\r
+ to_unicode(path, wbuf, ARRAY_SIZE(wbuf));\r
+ if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) {\r
+ filep->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh);\r
+ filep->modification_time = SYS2UNIX_TIME(\r
+ info.ftLastWriteTime.dwLowDateTime,\r
+ info.ftLastWriteTime.dwHighDateTime);\r
+ filep->is_directory = info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;\r
+ // If file name is fishy, reset the file structure and return error.\r
+ // Note it is important to reset, not just return the error, cause\r
+ // functions like is_file_opened() check the struct.\r
+ if (!filep->is_directory && !path_cannot_disclose_cgi(path)) {\r
+ memset(filep, 0, sizeof(*filep));\r
+ }\r
+ }\r
+ }\r
+\r
+ return filep->membuf != NULL || filep->modification_time != 0;\r
+}\r
+\r
+static int mg_remove(const char *path) {\r
+ wchar_t wbuf[PATH_MAX];\r
+ to_unicode(path, wbuf, ARRAY_SIZE(wbuf));\r
+ return DeleteFileW(wbuf) ? 0 : -1;\r
+}\r
+\r
+static int mg_mkdir(const char *path, int mode) {\r
+ char buf[PATH_MAX];\r
+ wchar_t wbuf[PATH_MAX];\r
+\r
+ (void) mode;\r
+ mg_strlcpy(buf, path, sizeof(buf));\r
+ change_slashes_to_backslashes(buf);\r
+\r
+ (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, ARRAY_SIZE(wbuf));\r
+\r
+ return CreateDirectoryW(wbuf, NULL) ? 0 : -1;\r
+}\r
+\r
+// Implementation of POSIX opendir/closedir/readdir for Windows.\r
+static DIR * opendir(const char *name) {\r
+ DIR *dir = NULL;\r
+ wchar_t wpath[PATH_MAX];\r
+ DWORD attrs;\r
+\r
+ if (name == NULL) {\r
+ SetLastError(ERROR_BAD_ARGUMENTS);\r
+ } else if ((dir = (DIR *) malloc(sizeof(*dir))) == NULL) {\r
+ SetLastError(ERROR_NOT_ENOUGH_MEMORY);\r
+ } else {\r
+ to_unicode(name, wpath, ARRAY_SIZE(wpath));\r
+ attrs = GetFileAttributesW(wpath);\r
+ if (attrs != 0xFFFFFFFF &&\r
+ ((attrs & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY)) {\r
+ (void) wcscat(wpath, L"\\*");\r
+ dir->handle = FindFirstFileW(wpath, &dir->info);\r
+ dir->result.d_name[0] = '\0';\r
+ } else {\r
+ free(dir);\r
+ dir = NULL;\r
+ }\r
+ }\r
+\r
+ return dir;\r
+}\r
+\r
+static int closedir(DIR *dir) {\r
+ int result = 0;\r
+\r
+ if (dir != NULL) {\r
+ if (dir->handle != INVALID_HANDLE_VALUE)\r
+ result = FindClose(dir->handle) ? 0 : -1;\r
+\r
+ free(dir);\r
+ } else {\r
+ result = -1;\r
+ SetLastError(ERROR_BAD_ARGUMENTS);\r
+ }\r
+\r
+ return result;\r
+}\r
+\r
+static struct dirent *readdir(DIR *dir) {\r
+ struct dirent *result = 0;\r
+\r
+ if (dir) {\r
+ if (dir->handle != INVALID_HANDLE_VALUE) {\r
+ result = &dir->result;\r
+ (void) WideCharToMultiByte(CP_UTF8, 0,\r
+ dir->info.cFileName, -1, result->d_name,\r
+ sizeof(result->d_name), NULL, NULL);\r
+\r
+ if (!FindNextFileW(dir->handle, &dir->info)) {\r
+ (void) FindClose(dir->handle);\r
+ dir->handle = INVALID_HANDLE_VALUE;\r
+ }\r
+\r
+ } else {\r
+ SetLastError(ERROR_FILE_NOT_FOUND);\r
+ }\r
+ } else {\r
+ SetLastError(ERROR_BAD_ARGUMENTS);\r
+ }\r
+\r
+ return result;\r
+}\r
+\r
+#ifndef HAVE_POLL\r
+static int poll(struct pollfd *pfd, int n, int milliseconds) {\r
+ struct timeval tv;\r
+ fd_set set;\r
+ int i, result, maxfd = 0;\r
+\r
+ tv.tv_sec = milliseconds / 1000;\r
+ tv.tv_usec = (milliseconds % 1000) * 1000;\r
+ FD_ZERO(&set);\r
+\r
+ for (i = 0; i < n; i++) {\r
+ FD_SET((SOCKET) pfd[i].fd, &set);\r
+ pfd[i].revents = 0;\r
+\r
+ if (pfd[i].fd > maxfd) {\r
+ maxfd = pfd[i].fd;\r
+ }\r
+ }\r
+\r
+ if ((result = select(maxfd + 1, &set, NULL, NULL, &tv)) > 0) {\r
+ for (i = 0; i < n; i++) {\r
+ if (FD_ISSET(pfd[i].fd, &set)) {\r
+ pfd[i].revents = POLLIN;\r
+ }\r
+ }\r
+ }\r
+\r
+ return result;\r
+}\r
+#endif // HAVE_POLL\r
+\r
+#define set_close_on_exec(x) // No FD_CLOEXEC on Windows\r
+\r
+int mg_start_thread(mg_thread_func_t f, void *p) {\r
+ return (long)_beginthread((void (__cdecl *)(void *)) f, 0, p) == -1L ? -1 : 0;\r
+}\r
+\r
+static HANDLE dlopen(const char *dll_name, int flags) {\r
+ wchar_t wbuf[PATH_MAX];\r
+ (void) flags;\r
+ to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf));\r
+ return LoadLibraryW(wbuf);\r
+}\r
+\r
+#if !defined(NO_CGI)\r
+#define SIGKILL 0\r
+static int kill(pid_t pid, int sig_num) {\r
+ (void) TerminateProcess(pid, sig_num);\r
+ (void) CloseHandle(pid);\r
+ return 0;\r
+}\r
+\r
+static void trim_trailing_whitespaces(char *s) {\r
+ char *e = s + strlen(s) - 1;\r
+ while (e > s && isspace(* (unsigned char *) e)) {\r
+ *e-- = '\0';\r
+ }\r
+}\r
+\r
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,\r
+ char *envblk, char *envp[], int fd_stdin,\r
+ int fd_stdout, const char *dir) {\r
+ HANDLE me;\r
+ char *p, *interp, full_interp[PATH_MAX], full_dir[PATH_MAX],\r
+ cmdline[PATH_MAX], buf[PATH_MAX];\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ STARTUPINFOA si;\r
+ PROCESS_INFORMATION pi = { 0 };\r
+\r
+ (void) envp;\r
+\r
+ memset(&si, 0, sizeof(si));\r
+ si.cb = sizeof(si);\r
+\r
+ // TODO(lsm): redirect CGI errors to the error log file\r
+ si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;\r
+ si.wShowWindow = SW_HIDE;\r
+\r
+ me = GetCurrentProcess();\r
+ DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdin), me,\r
+ &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS);\r
+ DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdout), me,\r
+ &si.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS);\r
+\r
+ // If CGI file is a script, try to read the interpreter line\r
+ interp = conn->ctx->config[CGI_INTERPRETER];\r
+ if (interp == NULL) {\r
+ buf[0] = buf[1] = '\0';\r
+\r
+ // Read the first line of the script into the buffer\r
+ snprintf(cmdline, sizeof(cmdline), "%s%c%s", dir, '/', prog);\r
+ if (mg_fopen(conn, cmdline, "r", &file)) {\r
+ p = (char *) file.membuf;\r
+ mg_fgets(buf, sizeof(buf), &file, &p);\r
+ mg_fclose(&file);\r
+ buf[sizeof(buf) - 1] = '\0';\r
+ }\r
+\r
+ if (buf[0] == '#' && buf[1] == '!') {\r
+ trim_trailing_whitespaces(buf + 2);\r
+ } else {\r
+ buf[2] = '\0';\r
+ }\r
+ interp = buf + 2;\r
+ }\r
+\r
+ if (interp[0] != '\0') {\r
+ GetFullPathNameA(interp, sizeof(full_interp), full_interp, NULL);\r
+ interp = full_interp;\r
+ }\r
+ GetFullPathNameA(dir, sizeof(full_dir), full_dir, NULL);\r
+\r
+ mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s%s\\%s",\r
+ interp, interp[0] == '\0' ? "" : " ", full_dir, prog);\r
+\r
+ DEBUG_TRACE(("Running [%s]", cmdline));\r
+ if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE,\r
+ CREATE_NEW_PROCESS_GROUP, envblk, NULL, &si, &pi) == 0) {\r
+ cry(conn, "%s: CreateProcess(%s): %ld",\r
+ __func__, cmdline, ERRNO);\r
+ pi.hProcess = (pid_t) -1;\r
+ }\r
+\r
+ // Always close these to prevent handle leakage.\r
+ (void) close(fd_stdin);\r
+ (void) close(fd_stdout);\r
+\r
+ (void) CloseHandle(si.hStdOutput);\r
+ (void) CloseHandle(si.hStdInput);\r
+ (void) CloseHandle(pi.hThread);\r
+\r
+ return (pid_t) pi.hProcess;\r
+}\r
+#endif // !NO_CGI\r
+\r
+static int set_non_blocking_mode(SOCKET sock) {\r
+ unsigned long on = 1;\r
+ return ioctlsocket(sock, FIONBIO, &on);\r
+}\r
+\r
+#else\r
+static int mg_stat(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ struct stat st;\r
+\r
+ if (!is_file_in_memory(conn, path, filep) && !stat(path, &st)) {\r
+ filep->size = st.st_size;\r
+ filep->modification_time = st.st_mtime;\r
+ filep->is_directory = S_ISDIR(st.st_mode);\r
+ } else {\r
+ filep->modification_time = (time_t) 0;\r
+ }\r
+\r
+ return filep->membuf != NULL || filep->modification_time != (time_t) 0;\r
+}\r
+\r
+static void set_close_on_exec(int fd) {\r
+ fcntl(fd, F_SETFD, FD_CLOEXEC);\r
+}\r
+\r
+int mg_start_thread(mg_thread_func_t func, void *param) {\r
+ pthread_t thread_id;\r
+ pthread_attr_t attr;\r
+ int result;\r
+\r
+ (void) pthread_attr_init(&attr);\r
+ (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);\r
+ // TODO(lsm): figure out why mongoose dies on Linux if next line is enabled\r
+ // (void) pthread_attr_setstacksize(&attr, sizeof(struct mg_connection) * 5);\r
+\r
+ result = pthread_create(&thread_id, &attr, func, param);\r
+ pthread_attr_destroy(&attr);\r
+\r
+ return result;\r
+}\r
+\r
+#ifndef NO_CGI\r
+static pid_t spawn_process(struct mg_connection *conn, const char *prog,\r
+ char *envblk, char *envp[], int fd_stdin,\r
+ int fd_stdout, const char *dir) {\r
+ pid_t pid;\r
+ const char *interp;\r
+\r
+ (void) envblk;\r
+\r
+ if ((pid = fork()) == -1) {\r
+ // Parent\r
+ send_http_error(conn, 500, http_500_error, "fork(): %s", strerror(ERRNO));\r
+ } else if (pid == 0) {\r
+ // Child\r
+ if (chdir(dir) != 0) {\r
+ cry(conn, "%s: chdir(%s): %s", __func__, dir, strerror(ERRNO));\r
+ } else if (dup2(fd_stdin, 0) == -1) {\r
+ cry(conn, "%s: dup2(%d, 0): %s", __func__, fd_stdin, strerror(ERRNO));\r
+ } else if (dup2(fd_stdout, 1) == -1) {\r
+ cry(conn, "%s: dup2(%d, 1): %s", __func__, fd_stdout, strerror(ERRNO));\r
+ } else {\r
+ (void) dup2(fd_stdout, 2);\r
+ (void) close(fd_stdin);\r
+ (void) close(fd_stdout);\r
+\r
+ // After exec, all signal handlers are restored to their default values,\r
+ // with one exception of SIGCHLD. According to POSIX.1-2001 and Linux's\r
+ // implementation, SIGCHLD's handler will leave unchanged after exec\r
+ // if it was set to be ignored. Restore it to default action.\r
+ signal(SIGCHLD, SIG_DFL);\r
+\r
+ interp = conn->ctx->config[CGI_INTERPRETER];\r
+ if (interp == NULL) {\r
+ (void) execle(prog, prog, NULL, envp);\r
+ cry(conn, "%s: execle(%s): %s", __func__, prog, strerror(ERRNO));\r
+ } else {\r
+ (void) execle(interp, interp, prog, NULL, envp);\r
+ cry(conn, "%s: execle(%s %s): %s", __func__, interp, prog,\r
+ strerror(ERRNO));\r
+ }\r
+ }\r
+ exit(EXIT_FAILURE);\r
+ }\r
+\r
+ // Parent. Close stdio descriptors\r
+ (void) close(fd_stdin);\r
+ (void) close(fd_stdout);\r
+\r
+ return pid;\r
+}\r
+#endif // !NO_CGI\r
+\r
+static int set_non_blocking_mode(SOCKET sock) {\r
+ int flags;\r
+\r
+ flags = fcntl(sock, F_GETFL, 0);\r
+ (void) fcntl(sock, F_SETFL, flags | O_NONBLOCK);\r
+\r
+ return 0;\r
+}\r
+#endif // _WIN32\r
+\r
+// Write data to the IO channel - opened file descriptor, socket or SSL\r
+// descriptor. Return number of bytes written.\r
+static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf,\r
+ int64_t len) {\r
+ int64_t sent;\r
+ int n, k;\r
+\r
+ (void) ssl; // Get rid of warning\r
+ sent = 0;\r
+ while (sent < len) {\r
+\r
+ // How many bytes we send in this iteration\r
+ k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent);\r
+\r
+#ifndef NO_SSL\r
+ if (ssl != NULL) {\r
+ n = SSL_write(ssl, buf + sent, k);\r
+ } else\r
+#endif\r
+ if (fp != NULL) {\r
+ n = (int) fwrite(buf + sent, 1, (size_t) k, fp);\r
+ if (ferror(fp))\r
+ n = -1;\r
+ } else {\r
+ n = send(sock, buf + sent, (size_t) k, MSG_NOSIGNAL);\r
+ }\r
+\r
+ if (n <= 0)\r
+ break;\r
+\r
+ sent += n;\r
+ }\r
+\r
+ return sent;\r
+}\r
+\r
+// Read from IO channel - opened file descriptor, socket, or SSL descriptor.\r
+// Return negative value on error, or number of bytes read on success.\r
+static int pull(FILE *fp, struct mg_connection *conn, char *buf, int len) {\r
+ int nread;\r
+\r
+ if (fp != NULL) {\r
+ // Use read() instead of fread(), because if we're reading from the CGI\r
+ // pipe, fread() may block until IO buffer is filled up. We cannot afford\r
+ // to block and must pass all read bytes immediately to the client.\r
+ nread = read(fileno(fp), buf, (size_t) len);\r
+#ifndef NO_SSL\r
+ } else if (conn->ssl != NULL) {\r
+ nread = SSL_read(conn->ssl, buf, len);\r
+#endif\r
+ } else {\r
+ nread = recv(conn->client.sock, buf, (size_t) len, 0);\r
+ }\r
+\r
+ return conn->ctx->stop_flag ? -1 : nread;\r
+}\r
+\r
+static int pull_all(FILE *fp, struct mg_connection *conn, char *buf, int len) {\r
+ int n, nread = 0;\r
+\r
+ while (len > 0) {\r
+ n = pull(fp, conn, buf + nread, len);\r
+ if (n < 0) {\r
+ nread = n; // Propagate the error\r
+ break;\r
+ } else if (n == 0) {\r
+ break; // No more data to read\r
+ } else {\r
+ conn->consumed_content += n;\r
+ nread += n;\r
+ len -= n;\r
+ }\r
+ }\r
+\r
+ return nread;\r
+}\r
+\r
+int mg_read(struct mg_connection *conn, void *buf, size_t len) {\r
+ int n, buffered_len, nread;\r
+ const char *body;\r
+\r
+ nread = 0;\r
+ if (conn->consumed_content < conn->content_len) {\r
+ // Adjust number of bytes to read.\r
+ int64_t to_read = conn->content_len - conn->consumed_content;\r
+ if (to_read < (int64_t) len) {\r
+ len = (size_t) to_read;\r
+ }\r
+\r
+ // Return buffered data\r
+ body = conn->buf + conn->request_len + conn->consumed_content;\r
+ buffered_len = &conn->buf[conn->data_len] - body;\r
+ if (buffered_len > 0) {\r
+ if (len < (size_t) buffered_len) {\r
+ buffered_len = (int) len;\r
+ }\r
+ memcpy(buf, body, (size_t) buffered_len);\r
+ len -= buffered_len;\r
+ conn->consumed_content += buffered_len;\r
+ nread += buffered_len;\r
+ buf = (char *) buf + buffered_len;\r
+ }\r
+\r
+ // We have returned all buffered data. Read new data from the remote socket.\r
+ n = pull_all(NULL, conn, (char *) buf, (int) len);\r
+ nread = n >= 0 ? nread + n : n;\r
+ }\r
+ return nread;\r
+}\r
+\r
+int mg_write(struct mg_connection *conn, const void *buf, size_t len) {\r
+ time_t now;\r
+ int64_t n, total, allowed;\r
+\r
+ if (conn->throttle > 0) {\r
+ if ((now = time(NULL)) != conn->last_throttle_time) {\r
+ conn->last_throttle_time = now;\r
+ conn->last_throttle_bytes = 0;\r
+ }\r
+ allowed = conn->throttle - conn->last_throttle_bytes;\r
+ if (allowed > (int64_t) len) {\r
+ allowed = len;\r
+ }\r
+ if ((total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,\r
+ (int64_t) allowed)) == allowed) {\r
+ buf = (char *) buf + total;\r
+ conn->last_throttle_bytes += total;\r
+ while (total < (int64_t) len && conn->ctx->stop_flag == 0) {\r
+ allowed = conn->throttle > (int64_t) len - total ?\r
+ (int64_t) len - total : conn->throttle;\r
+ if ((n = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,\r
+ (int64_t) allowed)) != allowed) {\r
+ break;\r
+ }\r
+ sleep(1);\r
+ conn->last_throttle_bytes = allowed;\r
+ conn->last_throttle_time = time(NULL);\r
+ buf = (char *) buf + n;\r
+ total += n;\r
+ }\r
+ }\r
+ } else {\r
+ total = push(NULL, conn->client.sock, conn->ssl, (const char *) buf,\r
+ (int64_t) len);\r
+ }\r
+ return (int) total;\r
+}\r
+\r
+// Print message to buffer. If buffer is large enough to hold the message,\r
+// return buffer. If buffer is to small, allocate large enough buffer on heap,\r
+// and return allocated buffer.\r
+static int alloc_vprintf(char **buf, size_t size, const char *fmt, va_list ap) {\r
+ va_list ap_copy;\r
+ int len;\r
+\r
+ // Windows is not standard-compliant, and vsnprintf() returns -1 if\r
+ // buffer is too small. Also, older versions of msvcrt.dll do not have\r
+ // _vscprintf(). However, if size is 0, vsnprintf() behaves correctly.\r
+ // Therefore, we make two passes: on first pass, get required message length.\r
+ // On second pass, actually print the message.\r
+ va_copy(ap_copy, ap);\r
+ len = vsnprintf(NULL, 0, fmt, ap_copy);\r
+\r
+ if (len > (int) size &&\r
+ (size = len + 1) > 0 &&\r
+ (*buf = (char *) malloc(size)) == NULL) {\r
+ len = -1; // Allocation failed, mark failure\r
+ } else {\r
+ va_copy(ap_copy, ap);\r
+ vsnprintf(*buf, size, fmt, ap_copy);\r
+ }\r
+\r
+ return len;\r
+}\r
+\r
+int mg_vprintf(struct mg_connection *conn, const char *fmt, va_list ap) {\r
+ char mem[MG_BUF_LEN], *buf = mem;\r
+ int len;\r
+\r
+ if ((len = alloc_vprintf(&buf, sizeof(mem), fmt, ap)) > 0) {\r
+ len = mg_write(conn, buf, (size_t) len);\r
+ }\r
+ if (buf != mem && buf != NULL) {\r
+ free(buf);\r
+ }\r
+\r
+ return len;\r
+}\r
+\r
+int mg_printf(struct mg_connection *conn, const char *fmt, ...) {\r
+ va_list ap;\r
+ va_start(ap, fmt);\r
+ return mg_vprintf(conn, fmt, ap);\r
+}\r
+\r
+int mg_url_decode(const char *src, int src_len, char *dst,\r
+ int dst_len, int is_form_url_encoded) {\r
+ int i, j, a, b;\r
+#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')\r
+\r
+ for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) {\r
+ if (src[i] == '%' && i < src_len - 2 &&\r
+ isxdigit(* (const unsigned char *) (src + i + 1)) &&\r
+ isxdigit(* (const unsigned char *) (src + i + 2))) {\r
+ a = tolower(* (const unsigned char *) (src + i + 1));\r
+ b = tolower(* (const unsigned char *) (src + i + 2));\r
+ dst[j] = (char) ((HEXTOI(a) << 4) | HEXTOI(b));\r
+ i += 2;\r
+ } else if (is_form_url_encoded && src[i] == '+') {\r
+ dst[j] = ' ';\r
+ } else {\r
+ dst[j] = src[i];\r
+ }\r
+ }\r
+\r
+ dst[j] = '\0'; // Null-terminate the destination\r
+\r
+ return i >= src_len ? j : -1;\r
+}\r
+\r
+int mg_get_var(const char *data, size_t data_len, const char *name,\r
+ char *dst, size_t dst_len) {\r
+ const char *p, *e, *s;\r
+ size_t name_len;\r
+ int len;\r
+\r
+ if (dst == NULL || dst_len == 0) {\r
+ len = -2;\r
+ } else if (data == NULL || name == NULL || data_len == 0) {\r
+ len = -1;\r
+ dst[0] = '\0';\r
+ } else {\r
+ name_len = strlen(name);\r
+ e = data + data_len;\r
+ len = -1;\r
+ dst[0] = '\0';\r
+\r
+ // data is "var1=val1&var2=val2...". Find variable first\r
+ for (p = data; p + name_len < e; p++) {\r
+ if ((p == data || p[-1] == '&') && p[name_len] == '=' &&\r
+ !mg_strncasecmp(name, p, name_len)) {\r
+\r
+ // Point p to variable value\r
+ p += name_len + 1;\r
+\r
+ // Point s to the end of the value\r
+ s = (const char *) memchr(p, '&', (size_t)(e - p));\r
+ if (s == NULL) {\r
+ s = e;\r
+ }\r
+ assert(s >= p);\r
+\r
+ // Decode variable into destination buffer\r
+ len = mg_url_decode(p, (size_t)(s - p), dst, dst_len, 1);\r
+\r
+ // Redirect error code from -1 to -2 (destination buffer too small).\r
+ if (len == -1) {\r
+ len = -2;\r
+ }\r
+ break;\r
+ }\r
+ }\r
+ }\r
+\r
+ return len;\r
+}\r
+\r
+int mg_get_cookie(const char *cookie_header, const char *var_name,\r
+ char *dst, size_t dst_size) {\r
+ const char *s, *p, *end;\r
+ int name_len, len = -1;\r
+\r
+ if (dst == NULL || dst_size == 0) {\r
+ len = -2;\r
+ } else if (var_name == NULL || (s = cookie_header) == NULL) {\r
+ len = -1;\r
+ dst[0] = '\0';\r
+ } else {\r
+ name_len = (int) strlen(var_name);\r
+ end = s + strlen(s);\r
+ dst[0] = '\0';\r
+\r
+ for (; (s = mg_strcasestr(s, var_name)) != NULL; s += name_len) {\r
+ if (s[name_len] == '=') {\r
+ s += name_len + 1;\r
+ if ((p = strchr(s, ' ')) == NULL)\r
+ p = end;\r
+ if (p[-1] == ';')\r
+ p--;\r
+ if (*s == '"' && p[-1] == '"' && p > s + 1) {\r
+ s++;\r
+ p--;\r
+ }\r
+ if ((size_t) (p - s) < dst_size) {\r
+ len = p - s;\r
+ mg_strlcpy(dst, s, (size_t) len + 1);\r
+ } else {\r
+ len = -3;\r
+ }\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ return len;\r
+}\r
+\r
+static void convert_uri_to_file_name(struct mg_connection *conn, char *buf,\r
+ size_t buf_len, struct file *filep) {\r
+ struct vec a, b;\r
+ const char *rewrite, *uri = conn->request_info.uri;\r
+ char *p;\r
+ int match_len;\r
+\r
+ // Using buf_len - 1 because memmove() for PATH_INFO may shift part\r
+ // of the path one byte on the right.\r
+ mg_snprintf(conn, buf, buf_len - 1, "%s%s", conn->ctx->config[DOCUMENT_ROOT],\r
+ uri);\r
+\r
+ rewrite = conn->ctx->config[REWRITE];\r
+ while ((rewrite = next_option(rewrite, &a, &b)) != NULL) {\r
+ if ((match_len = match_prefix(a.ptr, a.len, uri)) > 0) {\r
+ mg_snprintf(conn, buf, buf_len - 1, "%.*s%s", (int) b.len, b.ptr,\r
+ uri + match_len);\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (!mg_stat(conn, buf, filep)) {\r
+ // Support PATH_INFO for CGI scripts.\r
+ for (p = buf + strlen(buf); p > buf + 1; p--) {\r
+ if (*p == '/') {\r
+ *p = '\0';\r
+ if (match_prefix(conn->ctx->config[CGI_EXTENSIONS],\r
+ strlen(conn->ctx->config[CGI_EXTENSIONS]), buf) > 0 &&\r
+ mg_stat(conn, buf, filep)) {\r
+ // Shift PATH_INFO block one character right, e.g.\r
+ // "/x.cgi/foo/bar\x00" => "/x.cgi\x00/foo/bar\x00"\r
+ // conn->path_info is pointing to the local variable "path" declared\r
+ // in handle_request(), so PATH_INFO is not valid after\r
+ // handle_request returns.\r
+ conn->path_info = p + 1;\r
+ memmove(p + 2, p + 1, strlen(p + 1) + 1); // +1 is for trailing \0\r
+ p[1] = '/';\r
+ break;\r
+ } else {\r
+ *p = '/';\r
+ }\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+// Check whether full request is buffered. Return:\r
+// -1 if request is malformed\r
+// 0 if request is not yet fully buffered\r
+// >0 actual request length, including last \r\n\r\n\r
+static int get_request_len(const char *buf, int buflen) {\r
+ const char *s, *e;\r
+ int len = 0;\r
+\r
+ for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++)\r
+ // Control characters are not allowed but >=128 is.\r
+ if (!isprint(* (const unsigned char *) s) && *s != '\r' &&\r
+ *s != '\n' && * (const unsigned char *) s < 128) {\r
+ len = -1;\r
+ break; // [i_a] abort scan as soon as one malformed character is found;\r
+ // don't let subsequent \r\n\r\n win us over anyhow\r
+ } else if (s[0] == '\n' && s[1] == '\n') {\r
+ len = (int) (s - buf) + 2;\r
+ } else if (s[0] == '\n' && &s[1] < e &&\r
+ s[1] == '\r' && s[2] == '\n') {\r
+ len = (int) (s - buf) + 3;\r
+ }\r
+\r
+ return len;\r
+}\r
+\r
+// Convert month to the month number. Return -1 on error, or month number\r
+static int get_month_index(const char *s) {\r
+ size_t i;\r
+\r
+ for (i = 0; i < ARRAY_SIZE(month_names); i++)\r
+ if (!strcmp(s, month_names[i]))\r
+ return (int) i;\r
+\r
+ return -1;\r
+}\r
+\r
+static int num_leap_years(int year) {\r
+ return year / 4 - year / 100 + year / 400;\r
+}\r
+\r
+// Parse UTC date-time string, and return the corresponding time_t value.\r
+static time_t parse_date_string(const char *datetime) {\r
+ static const unsigned short days_before_month[] = {\r
+ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334\r
+ };\r
+ char month_str[32];\r
+ int second, minute, hour, day, month, year, leap_days, days;\r
+ time_t result = (time_t) 0;\r
+\r
+ if (((sscanf(datetime, "%d/%3s/%d %d:%d:%d",\r
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||\r
+ (sscanf(datetime, "%d %3s %d %d:%d:%d",\r
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||\r
+ (sscanf(datetime, "%*3s, %d %3s %d %d:%d:%d",\r
+ &day, month_str, &year, &hour, &minute, &second) == 6) ||\r
+ (sscanf(datetime, "%d-%3s-%d %d:%d:%d",\r
+ &day, month_str, &year, &hour, &minute, &second) == 6)) &&\r
+ year > 1970 &&\r
+ (month = get_month_index(month_str)) != -1) {\r
+ leap_days = num_leap_years(year) - num_leap_years(1970);\r
+ year -= 1970;\r
+ days = year * 365 + days_before_month[month] + (day - 1) + leap_days;\r
+ result = days * 24 * 3600 + hour * 3600 + minute * 60 + second;\r
+ }\r
+\r
+ return result;\r
+}\r
+\r
+// Protect against directory disclosure attack by removing '..',\r
+// excessive '/' and '\' characters\r
+static void remove_double_dots_and_double_slashes(char *s) {\r
+ char *p = s;\r
+\r
+ while (*s != '\0') {\r
+ *p++ = *s++;\r
+ if (s[-1] == '/' || s[-1] == '\\') {\r
+ // Skip all following slashes, backslashes and double-dots\r
+ while (s[0] != '\0') {\r
+ if (s[0] == '/' || s[0] == '\\') {\r
+ s++;\r
+ } else if (s[0] == '.' && s[1] == '.') {\r
+ s += 2;\r
+ } else {\r
+ break;\r
+ }\r
+ }\r
+ }\r
+ }\r
+ *p = '\0';\r
+}\r
+\r
+static const struct {\r
+ const char *extension;\r
+ size_t ext_len;\r
+ const char *mime_type;\r
+} builtin_mime_types[] = {\r
+ {".html", 5, "text/html"},\r
+ {".htm", 4, "text/html"},\r
+ {".shtm", 5, "text/html"},\r
+ {".shtml", 6, "text/html"},\r
+ {".css", 4, "text/css"},\r
+ {".js", 3, "application/x-javascript"},\r
+ {".ico", 4, "image/x-icon"},\r
+ {".gif", 4, "image/gif"},\r
+ {".jpg", 4, "image/jpeg"},\r
+ {".jpeg", 5, "image/jpeg"},\r
+ {".png", 4, "image/png"},\r
+ {".svg", 4, "image/svg+xml"},\r
+ {".txt", 4, "text/plain"},\r
+ {".torrent", 8, "application/x-bittorrent"},\r
+ {".wav", 4, "audio/x-wav"},\r
+ {".mp3", 4, "audio/x-mp3"},\r
+ {".mid", 4, "audio/mid"},\r
+ {".m3u", 4, "audio/x-mpegurl"},\r
+ {".ogg", 4, "audio/ogg"},\r
+ {".ram", 4, "audio/x-pn-realaudio"},\r
+ {".xml", 4, "text/xml"},\r
+ {".json", 5, "text/json"},\r
+ {".xslt", 5, "application/xml"},\r
+ {".xsl", 4, "application/xml"},\r
+ {".ra", 3, "audio/x-pn-realaudio"},\r
+ {".doc", 4, "application/msword"},\r
+ {".exe", 4, "application/octet-stream"},\r
+ {".zip", 4, "application/x-zip-compressed"},\r
+ {".xls", 4, "application/excel"},\r
+ {".tgz", 4, "application/x-tar-gz"},\r
+ {".tar", 4, "application/x-tar"},\r
+ {".gz", 3, "application/x-gunzip"},\r
+ {".arj", 4, "application/x-arj-compressed"},\r
+ {".rar", 4, "application/x-arj-compressed"},\r
+ {".rtf", 4, "application/rtf"},\r
+ {".pdf", 4, "application/pdf"},\r
+ {".swf", 4, "application/x-shockwave-flash"},\r
+ {".mpg", 4, "video/mpeg"},\r
+ {".webm", 5, "video/webm"},\r
+ {".mpeg", 5, "video/mpeg"},\r
+ {".mov", 4, "video/quicktime"},\r
+ {".mp4", 4, "video/mp4"},\r
+ {".m4v", 4, "video/x-m4v"},\r
+ {".asf", 4, "video/x-ms-asf"},\r
+ {".avi", 4, "video/x-msvideo"},\r
+ {".bmp", 4, "image/bmp"},\r
+ {".ttf", 4, "application/x-font-ttf"},\r
+ {NULL, 0, NULL}\r
+};\r
+\r
+const char *mg_get_builtin_mime_type(const char *path) {\r
+ const char *ext;\r
+ size_t i, path_len;\r
+\r
+ path_len = strlen(path);\r
+\r
+ for (i = 0; builtin_mime_types[i].extension != NULL; i++) {\r
+ ext = path + (path_len - builtin_mime_types[i].ext_len);\r
+ if (path_len > builtin_mime_types[i].ext_len &&\r
+ mg_strcasecmp(ext, builtin_mime_types[i].extension) == 0) {\r
+ return builtin_mime_types[i].mime_type;\r
+ }\r
+ }\r
+\r
+ return "text/plain";\r
+}\r
+\r
+// Look at the "path" extension and figure what mime type it has.\r
+// Store mime type in the vector.\r
+static void get_mime_type(struct mg_context *ctx, const char *path,\r
+ struct vec *vec) {\r
+ struct vec ext_vec, mime_vec;\r
+ const char *list, *ext;\r
+ size_t path_len;\r
+\r
+ path_len = strlen(path);\r
+\r
+ // Scan user-defined mime types first, in case user wants to\r
+ // override default mime types.\r
+ list = ctx->config[EXTRA_MIME_TYPES];\r
+ while ((list = next_option(list, &ext_vec, &mime_vec)) != NULL) {\r
+ // ext now points to the path suffix\r
+ ext = path + path_len - ext_vec.len;\r
+ if (mg_strncasecmp(ext, ext_vec.ptr, ext_vec.len) == 0) {\r
+ *vec = mime_vec;\r
+ return;\r
+ }\r
+ }\r
+\r
+ vec->ptr = mg_get_builtin_mime_type(path);\r
+ vec->len = strlen(vec->ptr);\r
+}\r
+\r
+static int is_big_endian(void) {\r
+ static const int n = 1;\r
+ return ((char *) &n)[0] == 0;\r
+}\r
+\r
+#ifndef HAVE_MD5\r
+typedef struct MD5Context {\r
+ uint32_t buf[4];\r
+ uint32_t bits[2];\r
+ unsigned char in[64];\r
+} MD5_CTX;\r
+\r
+static void byteReverse(unsigned char *buf, unsigned longs) {\r
+ uint32_t t;\r
+\r
+ // Forrest: MD5 expect LITTLE_ENDIAN, swap if BIG_ENDIAN\r
+ if (is_big_endian()) {\r
+ do {\r
+ t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |\r
+ ((unsigned) buf[1] << 8 | buf[0]);\r
+ * (uint32_t *) buf = t;\r
+ buf += 4;\r
+ } while (--longs);\r
+ }\r
+}\r
+\r
+#define F1(x, y, z) (z ^ (x & (y ^ z)))\r
+#define F2(x, y, z) F1(z, x, y)\r
+#define F3(x, y, z) (x ^ y ^ z)\r
+#define F4(x, y, z) (y ^ (x | ~z))\r
+\r
+#define MD5STEP(f, w, x, y, z, data, s) \\r
+ ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )\r
+\r
+// Start MD5 accumulation. Set bit count to 0 and buffer to mysterious\r
+// initialization constants.\r
+static void MD5Init(MD5_CTX *ctx) {\r
+ ctx->buf[0] = 0x67452301;\r
+ ctx->buf[1] = 0xefcdab89;\r
+ ctx->buf[2] = 0x98badcfe;\r
+ ctx->buf[3] = 0x10325476;\r
+\r
+ ctx->bits[0] = 0;\r
+ ctx->bits[1] = 0;\r
+}\r
+\r
+static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) {\r
+ register uint32_t a, b, c, d;\r
+\r
+ a = buf[0];\r
+ b = buf[1];\r
+ c = buf[2];\r
+ d = buf[3];\r
+\r
+ MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);\r
+ MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);\r
+ MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);\r
+ MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);\r
+ MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);\r
+ MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);\r
+ MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);\r
+ MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);\r
+ MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);\r
+ MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);\r
+ MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);\r
+ MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);\r
+ MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);\r
+ MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);\r
+ MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);\r
+ MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);\r
+\r
+ MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);\r
+ MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);\r
+ MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);\r
+ MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);\r
+ MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);\r
+ MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);\r
+ MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);\r
+ MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);\r
+ MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);\r
+ MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);\r
+ MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);\r
+ MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);\r
+ MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);\r
+ MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);\r
+ MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);\r
+ MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);\r
+\r
+ MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);\r
+ MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);\r
+ MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);\r
+ MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);\r
+ MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);\r
+ MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);\r
+ MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);\r
+ MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);\r
+ MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);\r
+ MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);\r
+ MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);\r
+ MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);\r
+ MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);\r
+ MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);\r
+ MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);\r
+ MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);\r
+\r
+ MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);\r
+ MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);\r
+ MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);\r
+ MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);\r
+ MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);\r
+ MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);\r
+ MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);\r
+ MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);\r
+ MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);\r
+ MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);\r
+ MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);\r
+ MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);\r
+ MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);\r
+ MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);\r
+ MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);\r
+ MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);\r
+\r
+ buf[0] += a;\r
+ buf[1] += b;\r
+ buf[2] += c;\r
+ buf[3] += d;\r
+}\r
+\r
+static void MD5Update(MD5_CTX *ctx, unsigned char const *buf, unsigned len) {\r
+ uint32_t t;\r
+\r
+ t = ctx->bits[0];\r
+ if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)\r
+ ctx->bits[1]++;\r
+ ctx->bits[1] += len >> 29;\r
+\r
+ t = (t >> 3) & 0x3f;\r
+\r
+ if (t) {\r
+ unsigned char *p = (unsigned char *) ctx->in + t;\r
+\r
+ t = 64 - t;\r
+ if (len < t) {\r
+ memcpy(p, buf, len);\r
+ return;\r
+ }\r
+ memcpy(p, buf, t);\r
+ byteReverse(ctx->in, 16);\r
+ MD5Transform(ctx->buf, (uint32_t *) ctx->in);\r
+ buf += t;\r
+ len -= t;\r
+ }\r
+\r
+ while (len >= 64) {\r
+ memcpy(ctx->in, buf, 64);\r
+ byteReverse(ctx->in, 16);\r
+ MD5Transform(ctx->buf, (uint32_t *) ctx->in);\r
+ buf += 64;\r
+ len -= 64;\r
+ }\r
+\r
+ memcpy(ctx->in, buf, len);\r
+}\r
+\r
+static void MD5Final(unsigned char digest[16], MD5_CTX *ctx) {\r
+ unsigned count;\r
+ unsigned char *p;\r
+ uint32_t *a;\r
+\r
+ count = (ctx->bits[0] >> 3) & 0x3F;\r
+\r
+ p = ctx->in + count;\r
+ *p++ = 0x80;\r
+ count = 64 - 1 - count;\r
+ if (count < 8) {\r
+ memset(p, 0, count);\r
+ byteReverse(ctx->in, 16);\r
+ MD5Transform(ctx->buf, (uint32_t *) ctx->in);\r
+ memset(ctx->in, 0, 56);\r
+ } else {\r
+ memset(p, 0, count - 8);\r
+ }\r
+ byteReverse(ctx->in, 14);\r
+\r
+ a = (uint32_t *)ctx->in;\r
+ a[14] = ctx->bits[0];\r
+ a[15] = ctx->bits[1];\r
+\r
+ MD5Transform(ctx->buf, (uint32_t *) ctx->in);\r
+ byteReverse((unsigned char *) ctx->buf, 4);\r
+ memcpy(digest, ctx->buf, 16);\r
+ memset((char *) ctx, 0, sizeof(*ctx));\r
+}\r
+#endif // !HAVE_MD5\r
+\r
+// Stringify binary data. Output buffer must be twice as big as input,\r
+// because each byte takes 2 bytes in string representation\r
+static void bin2str(char *to, const unsigned char *p, size_t len) {\r
+ static const char *hex = "0123456789abcdef";\r
+\r
+ for (; len--; p++) {\r
+ *to++ = hex[p[0] >> 4];\r
+ *to++ = hex[p[0] & 0x0f];\r
+ }\r
+ *to = '\0';\r
+}\r
+\r
+// Return stringified MD5 hash for list of strings. Buffer must be 33 bytes.\r
+char *mg_md5(char buf[33], ...) {\r
+ unsigned char hash[16];\r
+ const char *p;\r
+ va_list ap;\r
+ MD5_CTX ctx;\r
+\r
+ MD5Init(&ctx);\r
+\r
+ va_start(ap, buf);\r
+ while ((p = va_arg(ap, const char *)) != NULL) {\r
+ MD5Update(&ctx, (const unsigned char *) p, (unsigned) strlen(p));\r
+ }\r
+ va_end(ap);\r
+\r
+ MD5Final(hash, &ctx);\r
+ bin2str(buf, hash, sizeof(hash));\r
+ return buf;\r
+}\r
+\r
+// Check the user's password, return 1 if OK\r
+static int check_password(const char *method, const char *ha1, const char *uri,\r
+ const char *nonce, const char *nc, const char *cnonce,\r
+ const char *qop, const char *response) {\r
+ char ha2[32 + 1], expected_response[32 + 1];\r
+\r
+ // Some of the parameters may be NULL\r
+ if (method == NULL || nonce == NULL || nc == NULL || cnonce == NULL ||\r
+ qop == NULL || response == NULL) {\r
+ return 0;\r
+ }\r
+\r
+ // NOTE(lsm): due to a bug in MSIE, we do not compare the URI\r
+ // TODO(lsm): check for authentication timeout\r
+ if (// strcmp(dig->uri, c->ouri) != 0 ||\r
+ strlen(response) != 32\r
+ // || now - strtoul(dig->nonce, NULL, 10) > 3600\r
+ ) {\r
+ return 0;\r
+ }\r
+\r
+ mg_md5(ha2, method, ":", uri, NULL);\r
+ mg_md5(expected_response, ha1, ":", nonce, ":", nc,\r
+ ":", cnonce, ":", qop, ":", ha2, NULL);\r
+\r
+ return mg_strcasecmp(response, expected_response) == 0;\r
+}\r
+\r
+// Use the global passwords file, if specified by auth_gpass option,\r
+// or search for .htpasswd in the requested directory.\r
+static void open_auth_file(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ char name[PATH_MAX];\r
+ const char *p, *e, *gpass = conn->ctx->config[GLOBAL_PASSWORDS_FILE];\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+\r
+ if (gpass != NULL) {\r
+ // Use global passwords file\r
+ if (!mg_fopen(conn, gpass, "r", filep)) {\r
+ cry(conn, "fopen(%s): %s", gpass, strerror(ERRNO));\r
+ }\r
+ // Important: using local struct file to test path for is_directory flag.\r
+ // If filep is used, mg_stat() makes it appear as if auth file was opened.\r
+ } else if (mg_stat(conn, path, &file) && file.is_directory) {\r
+ mg_snprintf(conn, name, sizeof(name), "%s%c%s",\r
+ path, '/', PASSWORDS_FILE_NAME);\r
+ mg_fopen(conn, name, "r", filep);\r
+ } else {\r
+ // Try to find .htpasswd in requested directory.\r
+ for (p = path, e = p + strlen(p) - 1; e > p; e--)\r
+ if (e[0] == '/')\r
+ break;\r
+ mg_snprintf(conn, name, sizeof(name), "%.*s%c%s",\r
+ (int) (e - p), p, '/', PASSWORDS_FILE_NAME);\r
+ mg_fopen(conn, name, "r", filep);\r
+ }\r
+}\r
+\r
+// Parsed Authorization header\r
+struct ah {\r
+ char *user, *uri, *cnonce, *response, *qop, *nc, *nonce;\r
+};\r
+\r
+// Return 1 on success. Always initializes the ah structure.\r
+static int parse_auth_header(struct mg_connection *conn, char *buf,\r
+ size_t buf_size, struct ah *ah) {\r
+ char *name, *value, *s;\r
+ const char *auth_header;\r
+\r
+ (void) memset(ah, 0, sizeof(*ah));\r
+ if ((auth_header = mg_get_header(conn, "Authorization")) == NULL ||\r
+ mg_strncasecmp(auth_header, "Digest ", 7) != 0) {\r
+ return 0;\r
+ }\r
+\r
+ // Make modifiable copy of the auth header\r
+ (void) mg_strlcpy(buf, auth_header + 7, buf_size);\r
+ s = buf;\r
+\r
+ // Parse authorization header\r
+ for (;;) {\r
+ // Gobble initial spaces\r
+ while (isspace(* (unsigned char *) s)) {\r
+ s++;\r
+ }\r
+ name = skip_quoted(&s, "=", " ", 0);\r
+ // Value is either quote-delimited, or ends at first comma or space.\r
+ if (s[0] == '\"') {\r
+ s++;\r
+ value = skip_quoted(&s, "\"", " ", '\\');\r
+ if (s[0] == ',') {\r
+ s++;\r
+ }\r
+ } else {\r
+ value = skip_quoted(&s, ", ", " ", 0); // IE uses commas, FF uses spaces\r
+ }\r
+ if (*name == '\0') {\r
+ break;\r
+ }\r
+\r
+ if (!strcmp(name, "username")) {\r
+ ah->user = value;\r
+ } else if (!strcmp(name, "cnonce")) {\r
+ ah->cnonce = value;\r
+ } else if (!strcmp(name, "response")) {\r
+ ah->response = value;\r
+ } else if (!strcmp(name, "uri")) {\r
+ ah->uri = value;\r
+ } else if (!strcmp(name, "qop")) {\r
+ ah->qop = value;\r
+ } else if (!strcmp(name, "nc")) {\r
+ ah->nc = value;\r
+ } else if (!strcmp(name, "nonce")) {\r
+ ah->nonce = value;\r
+ }\r
+ }\r
+\r
+ // CGI needs it as REMOTE_USER\r
+ if (ah->user != NULL) {\r
+ conn->request_info.remote_user = mg_strdup(ah->user);\r
+ } else {\r
+ return 0;\r
+ }\r
+\r
+ return 1;\r
+}\r
+\r
+static char *mg_fgets(char *buf, size_t size, struct file *filep, char **p) {\r
+ char *eof;\r
+ size_t len;\r
+\r
+ if (filep->membuf != NULL && *p != NULL) {\r
+ eof = memchr(*p, '\n', &filep->membuf[filep->size] - *p);\r
+ len = (size_t) (eof - *p) > size - 1 ? size - 1 : (size_t) (eof - *p);\r
+ memcpy(buf, *p, len);\r
+ buf[len] = '\0';\r
+ *p = eof;\r
+ return eof;\r
+ } else if (filep->fp != NULL) {\r
+ return fgets(buf, size, filep->fp);\r
+ } else {\r
+ return NULL;\r
+ }\r
+}\r
+\r
+// Authorize against the opened passwords file. Return 1 if authorized.\r
+static int authorize(struct mg_connection *conn, struct file *filep) {\r
+ struct ah ah;\r
+ char line[256], f_user[256], ha1[256], f_domain[256], buf[MG_BUF_LEN], *p;\r
+\r
+ if (!parse_auth_header(conn, buf, sizeof(buf), &ah)) {\r
+ return 0;\r
+ }\r
+\r
+ // Loop over passwords file\r
+ p = (char *) filep->membuf;\r
+ while (mg_fgets(line, sizeof(line), filep, &p) != NULL) {\r
+ if (sscanf(line, "%[^:]:%[^:]:%s", f_user, f_domain, ha1) != 3) {\r
+ continue;\r
+ }\r
+\r
+ if (!strcmp(ah.user, f_user) &&\r
+ !strcmp(conn->ctx->config[AUTHENTICATION_DOMAIN], f_domain))\r
+ return check_password(conn->request_info.request_method, ha1, ah.uri,\r
+ ah.nonce, ah.nc, ah.cnonce, ah.qop, ah.response);\r
+ }\r
+\r
+ return 0;\r
+}\r
+\r
+// Return 1 if request is authorised, 0 otherwise.\r
+static int check_authorization(struct mg_connection *conn, const char *path) {\r
+ char fname[PATH_MAX];\r
+ struct vec uri_vec, filename_vec;\r
+ const char *list;\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ int authorized = 1;\r
+\r
+ list = conn->ctx->config[PROTECT_URI];\r
+ while ((list = next_option(list, &uri_vec, &filename_vec)) != NULL) {\r
+ if (!memcmp(conn->request_info.uri, uri_vec.ptr, uri_vec.len)) {\r
+ mg_snprintf(conn, fname, sizeof(fname), "%.*s",\r
+ (int) filename_vec.len, filename_vec.ptr);\r
+ if (!mg_fopen(conn, fname, "r", &file)) {\r
+ cry(conn, "%s: cannot open %s: %s", __func__, fname, strerror(errno));\r
+ }\r
+ break;\r
+ }\r
+ }\r
+\r
+ if (!is_file_opened(&file)) {\r
+ open_auth_file(conn, path, &file);\r
+ }\r
+\r
+ if (is_file_opened(&file)) {\r
+ authorized = authorize(conn, &file);\r
+ mg_fclose(&file);\r
+ }\r
+\r
+ return authorized;\r
+}\r
+\r
+static void send_authorization_request(struct mg_connection *conn) {\r
+ conn->status_code = 401;\r
+ mg_printf(conn,\r
+ "HTTP/1.1 401 Unauthorized\r\n"\r
+ "Content-Length: 0\r\n"\r
+ "WWW-Authenticate: Digest qop=\"auth\", "\r
+ "realm=\"%s\", nonce=\"%lu\"\r\n\r\n",\r
+ conn->ctx->config[AUTHENTICATION_DOMAIN],\r
+ (unsigned long) time(NULL));\r
+}\r
+\r
+static int is_authorized_for_put(struct mg_connection *conn) {\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ const char *passfile = conn->ctx->config[PUT_DELETE_PASSWORDS_FILE];\r
+ int ret = 0;\r
+\r
+ if (passfile != NULL && mg_fopen(conn, passfile, "r", &file)) {\r
+ ret = authorize(conn, &file);\r
+ mg_fclose(&file);\r
+ }\r
+\r
+ return ret;\r
+}\r
+\r
+int mg_modify_passwords_file(const char *fname, const char *domain,\r
+ const char *user, const char *pass) {\r
+ int found;\r
+ char line[512], u[512], d[512], ha1[33], tmp[PATH_MAX];\r
+ FILE *fp, *fp2;\r
+\r
+ found = 0;\r
+ fp = fp2 = NULL;\r
+\r
+ // Regard empty password as no password - remove user record.\r
+ if (pass != NULL && pass[0] == '\0') {\r
+ pass = NULL;\r
+ }\r
+\r
+ (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname);\r
+\r
+ // Create the file if does not exist\r
+ if ((fp = fopen(fname, "a+")) != NULL) {\r
+ (void) fclose(fp);\r
+ }\r
+\r
+ // Open the given file and temporary file\r
+ if ((fp = fopen(fname, "r")) == NULL) {\r
+ return 0;\r
+ } else if ((fp2 = fopen(tmp, "w+")) == NULL) {\r
+ fclose(fp);\r
+ return 0;\r
+ }\r
+\r
+ // Copy the stuff to temporary file\r
+ while (fgets(line, sizeof(line), fp) != NULL) {\r
+ if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) {\r
+ continue;\r
+ }\r
+\r
+ if (!strcmp(u, user) && !strcmp(d, domain)) {\r
+ found++;\r
+ if (pass != NULL) {\r
+ mg_md5(ha1, user, ":", domain, ":", pass, NULL);\r
+ fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);\r
+ }\r
+ } else {\r
+ fprintf(fp2, "%s", line);\r
+ }\r
+ }\r
+\r
+ // If new user, just add it\r
+ if (!found && pass != NULL) {\r
+ mg_md5(ha1, user, ":", domain, ":", pass, NULL);\r
+ fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);\r
+ }\r
+\r
+ // Close files\r
+ fclose(fp);\r
+ fclose(fp2);\r
+\r
+ // Put the temp file in place of real file\r
+ remove(fname);\r
+ rename(tmp, fname);\r
+\r
+ return 1;\r
+}\r
+\r
+static int conn2(const char *host, int port, int use_ssl,\r
+ char *ebuf, size_t ebuf_len) {\r
+ struct sockaddr_in sin;\r
+ struct hostent *he;\r
+ SOCKET sock = INVALID_SOCKET;\r
+\r
+ if (host == NULL) {\r
+ snprintf(ebuf, ebuf_len, "%s", "NULL host");\r
+ } else if (use_ssl && SSLv23_client_method == NULL) {\r
+ snprintf(ebuf, ebuf_len, "%s", "SSL is not initialized");\r
+ // TODO(lsm): use something threadsafe instead of gethostbyname()\r
+ } else if ((he = gethostbyname(host)) == NULL) {\r
+ snprintf(ebuf, ebuf_len, "gethostbyname(%s): %s", host, strerror(ERRNO));\r
+ } else if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) {\r
+ snprintf(ebuf, ebuf_len, "socket(): %s", strerror(ERRNO));\r
+ } else {\r
+ sin.sin_family = AF_INET;\r
+ sin.sin_port = htons((uint16_t) port);\r
+ sin.sin_addr = * (struct in_addr *) he->h_addr_list[0];\r
+ if (connect(sock, (struct sockaddr *) &sin, sizeof(sin)) != 0) {\r
+ snprintf(ebuf, ebuf_len, "connect(%s:%d): %s",\r
+ host, port, strerror(ERRNO));\r
+ closesocket(sock);\r
+ sock = INVALID_SOCKET;\r
+ }\r
+ }\r
+ return sock;\r
+}\r
+\r
+\r
+\r
+void mg_url_encode(const char *src, char *dst, size_t dst_len) {\r
+ static const char *dont_escape = "._-$,;~()";\r
+ static const char *hex = "0123456789abcdef";\r
+ const char *end = dst + dst_len - 1;\r
+\r
+ for (; *src != '\0' && dst < end; src++, dst++) {\r
+ if (isalnum(*(const unsigned char *) src) ||\r
+ strchr(dont_escape, * (const unsigned char *) src) != NULL) {\r
+ *dst = *src;\r
+ } else if (dst + 2 < end) {\r
+ dst[0] = '%';\r
+ dst[1] = hex[(* (const unsigned char *) src) >> 4];\r
+ dst[2] = hex[(* (const unsigned char *) src) & 0xf];\r
+ dst += 2;\r
+ }\r
+ }\r
+\r
+ *dst = '\0';\r
+}\r
+\r
+static void print_dir_entry(struct de *de) {\r
+ char size[64], mod[64], href[PATH_MAX];\r
+\r
+ if (de->file.is_directory) {\r
+ mg_snprintf(de->conn, size, sizeof(size), "%s", "[DIRECTORY]");\r
+ } else {\r
+ // We use (signed) cast below because MSVC 6 compiler cannot\r
+ // convert unsigned __int64 to double. Sigh.\r
+ if (de->file.size < 1024) {\r
+ mg_snprintf(de->conn, size, sizeof(size), "%d", (int) de->file.size);\r
+ } else if (de->file.size < 0x100000) {\r
+ mg_snprintf(de->conn, size, sizeof(size),\r
+ "%.1fk", (double) de->file.size / 1024.0);\r
+ } else if (de->file.size < 0x40000000) {\r
+ mg_snprintf(de->conn, size, sizeof(size),\r
+ "%.1fM", (double) de->file.size / 1048576);\r
+ } else {\r
+ mg_snprintf(de->conn, size, sizeof(size),\r
+ "%.1fG", (double) de->file.size / 1073741824);\r
+ }\r
+ }\r
+ strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M",\r
+ localtime(&de->file.modification_time));\r
+ mg_url_encode(de->file_name, href, sizeof(href));\r
+ de->conn->num_bytes_sent += mg_printf(de->conn,\r
+ "<tr><td><a href=\"%s%s%s\">%s%s</a></td>"\r
+ "<td> %s</td><td> %s</td></tr>\n",\r
+ de->conn->request_info.uri, href, de->file.is_directory ? "/" : "",\r
+ de->file_name, de->file.is_directory ? "/" : "", mod, size);\r
+}\r
+\r
+// This function is called from send_directory() and used for\r
+// sorting directory entries by size, or name, or modification time.\r
+// On windows, __cdecl specification is needed in case if project is built\r
+// with __stdcall convention. qsort always requires __cdels callback.\r
+static int WINCDECL compare_dir_entries(const void *p1, const void *p2) {\r
+ const struct de *a = (const struct de *) p1, *b = (const struct de *) p2;\r
+ const char *query_string = a->conn->request_info.query_string;\r
+ int cmp_result = 0;\r
+\r
+ if (query_string == NULL) {\r
+ query_string = "na";\r
+ }\r
+\r
+ if (a->file.is_directory && !b->file.is_directory) {\r
+ return -1; // Always put directories on top\r
+ } else if (!a->file.is_directory && b->file.is_directory) {\r
+ return 1; // Always put directories on top\r
+ } else if (*query_string == 'n') {\r
+ cmp_result = strcmp(a->file_name, b->file_name);\r
+ } else if (*query_string == 's') {\r
+ cmp_result = a->file.size == b->file.size ? 0 :\r
+ a->file.size > b->file.size ? 1 : -1;\r
+ } else if (*query_string == 'd') {\r
+ cmp_result = a->file.modification_time == b->file.modification_time ? 0 :\r
+ a->file.modification_time > b->file.modification_time ? 1 : -1;\r
+ }\r
+\r
+ return query_string[1] == 'd' ? -cmp_result : cmp_result;\r
+}\r
+\r
+static int must_hide_file(struct mg_connection *conn, const char *path) {\r
+ const char *pw_pattern = "**" PASSWORDS_FILE_NAME "$";\r
+ const char *pattern = conn->ctx->config[HIDE_FILES];\r
+ return match_prefix(pw_pattern, strlen(pw_pattern), path) > 0 ||\r
+ (pattern != NULL && match_prefix(pattern, strlen(pattern), path) > 0);\r
+}\r
+\r
+static int scan_directory(struct mg_connection *conn, const char *dir,\r
+ void *data, void (*cb)(struct de *, void *)) {\r
+ char path[PATH_MAX];\r
+ struct dirent *dp;\r
+ DIR *dirp;\r
+ struct de de;\r
+\r
+ if ((dirp = opendir(dir)) == NULL) {\r
+ return 0;\r
+ } else {\r
+ de.conn = conn;\r
+\r
+ while ((dp = readdir(dirp)) != NULL) {\r
+ // Do not show current dir and hidden files\r
+ if (!strcmp(dp->d_name, ".") ||\r
+ !strcmp(dp->d_name, "..") ||\r
+ must_hide_file(conn, dp->d_name)) {\r
+ continue;\r
+ }\r
+\r
+ mg_snprintf(conn, path, sizeof(path), "%s%c%s", dir, '/', dp->d_name);\r
+\r
+ // If we don't memset stat structure to zero, mtime will have\r
+ // garbage and strftime() will segfault later on in\r
+ // print_dir_entry(). memset is required only if mg_stat()\r
+ // fails. For more details, see\r
+ // http://code.google.com/p/mongoose/issues/detail?id=79\r
+ memset(&de.file, 0, sizeof(de.file));\r
+ mg_stat(conn, path, &de.file);\r
+\r
+ de.file_name = dp->d_name;\r
+ cb(&de, data);\r
+ }\r
+ (void) closedir(dirp);\r
+ }\r
+ return 1;\r
+}\r
+\r
+struct dir_scan_data {\r
+ struct de *entries;\r
+ int num_entries;\r
+ int arr_size;\r
+};\r
+\r
+// Behaves like realloc(), but frees original pointer on failure\r
+static void *realloc2(void *ptr, size_t size) {\r
+ void *new_ptr = realloc(ptr, size);\r
+ if (new_ptr == NULL) {\r
+ free(ptr);\r
+ }\r
+ return new_ptr;\r
+}\r
+\r
+static void dir_scan_callback(struct de *de, void *data) {\r
+ struct dir_scan_data *dsd = (struct dir_scan_data *) data;\r
+\r
+ if (dsd->entries == NULL || dsd->num_entries >= dsd->arr_size) {\r
+ dsd->arr_size *= 2;\r
+ dsd->entries = (struct de *) realloc2(dsd->entries, dsd->arr_size *\r
+ sizeof(dsd->entries[0]));\r
+ }\r
+ if (dsd->entries == NULL) {\r
+ // TODO(lsm): propagate an error to the caller\r
+ dsd->num_entries = 0;\r
+ } else {\r
+ dsd->entries[dsd->num_entries].file_name = mg_strdup(de->file_name);\r
+ dsd->entries[dsd->num_entries].file = de->file;\r
+ dsd->entries[dsd->num_entries].conn = de->conn;\r
+ dsd->num_entries++;\r
+ }\r
+}\r
+\r
+static void handle_directory_request(struct mg_connection *conn,\r
+ const char *dir) {\r
+ int i, sort_direction;\r
+ struct dir_scan_data data = { NULL, 0, 128 };\r
+\r
+ if (!scan_directory(conn, dir, &data, dir_scan_callback)) {\r
+ send_http_error(conn, 500, "Cannot open directory",\r
+ "Error: opendir(%s): %s", dir, strerror(ERRNO));\r
+ return;\r
+ }\r
+\r
+ sort_direction = conn->request_info.query_string != NULL &&\r
+ conn->request_info.query_string[1] == 'd' ? 'a' : 'd';\r
+\r
+ conn->must_close = 1;\r
+ mg_printf(conn, "%s",\r
+ "HTTP/1.1 200 OK\r\n"\r
+ "Connection: close\r\n"\r
+ "Content-Type: text/html; charset=utf-8\r\n\r\n");\r
+\r
+ conn->num_bytes_sent += mg_printf(conn,\r
+ "<html><head><title>Index of %s</title>"\r
+ "<style>th {text-align: left;}</style></head>"\r
+ "<body><h1>Index of %s</h1><pre><table cellpadding=\"0\">"\r
+ "<tr><th><a href=\"?n%c\">Name</a></th>"\r
+ "<th><a href=\"?d%c\">Modified</a></th>"\r
+ "<th><a href=\"?s%c\">Size</a></th></tr>"\r
+ "<tr><td colspan=\"3\"><hr></td></tr>",\r
+ conn->request_info.uri, conn->request_info.uri,\r
+ sort_direction, sort_direction, sort_direction);\r
+\r
+ // Print first entry - link to a parent directory\r
+ conn->num_bytes_sent += mg_printf(conn,\r
+ "<tr><td><a href=\"%s%s\">%s</a></td>"\r
+ "<td> %s</td><td> %s</td></tr>\n",\r
+ conn->request_info.uri, "..", "Parent directory", "-", "-");\r
+\r
+ // Sort and print directory entries\r
+ qsort(data.entries, (size_t) data.num_entries, sizeof(data.entries[0]),\r
+ compare_dir_entries);\r
+ for (i = 0; i < data.num_entries; i++) {\r
+ print_dir_entry(&data.entries[i]);\r
+ free(data.entries[i].file_name);\r
+ }\r
+ free(data.entries);\r
+\r
+ conn->num_bytes_sent += mg_printf(conn, "%s", "</table></body></html>");\r
+ conn->status_code = 200;\r
+}\r
+\r
+// Send len bytes from the opened file to the client.\r
+static void send_file_data(struct mg_connection *conn, struct file *filep,\r
+ int64_t offset, int64_t len) {\r
+ char buf[MG_BUF_LEN];\r
+ int to_read, num_read, num_written;\r
+\r
+ // Sanity check the offset\r
+ offset = offset < 0 ? 0 : offset > filep->size ? filep->size : offset;\r
+\r
+ if (len > 0 && filep->membuf != NULL && filep->size > 0) {\r
+ if (len > filep->size - offset) {\r
+ len = filep->size - offset;\r
+ }\r
+ mg_write(conn, filep->membuf + offset, (size_t) len);\r
+ } else if (len > 0 && filep->fp != NULL) {\r
+ fseeko(filep->fp, offset, SEEK_SET);\r
+ while (len > 0) {\r
+ // Calculate how much to read from the file in the buffer\r
+ to_read = sizeof(buf);\r
+ if ((int64_t) to_read > len) {\r
+ to_read = (int) len;\r
+ }\r
+\r
+ // Read from file, exit the loop on error\r
+ if ((num_read = fread(buf, 1, (size_t) to_read, filep->fp)) <= 0) {\r
+ break;\r
+ }\r
+\r
+ // Send read bytes to the client, exit the loop on error\r
+ if ((num_written = mg_write(conn, buf, (size_t) num_read)) != num_read) {\r
+ break;\r
+ }\r
+\r
+ // Both read and were successful, adjust counters\r
+ conn->num_bytes_sent += num_written;\r
+ len -= num_written;\r
+ }\r
+ }\r
+}\r
+\r
+static int parse_range_header(const char *header, int64_t *a, int64_t *b) {\r
+ return sscanf(header, "bytes=%" INT64_FMT "-%" INT64_FMT, a, b);\r
+}\r
+\r
+static void gmt_time_string(char *buf, size_t buf_len, time_t *t) {\r
+ strftime(buf, buf_len, "%a, %d %b %Y %H:%M:%S GMT", gmtime(t));\r
+}\r
+\r
+static void construct_etag(char *buf, size_t buf_len,\r
+ const struct file *filep) {\r
+ snprintf(buf, buf_len, "\"%lx.%" INT64_FMT "\"",\r
+ (unsigned long) filep->modification_time, filep->size);\r
+}\r
+\r
+static void fclose_on_exec(struct file *filep) {\r
+ if (filep != NULL && filep->fp != NULL) {\r
+#ifndef _WIN32\r
+ fcntl(fileno(filep->fp), F_SETFD, FD_CLOEXEC);\r
+#endif\r
+ }\r
+}\r
+\r
+static void handle_file_request(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ char date[64], lm[64], etag[64], range[64];\r
+ const char *msg = "OK", *hdr;\r
+ time_t curtime = time(NULL);\r
+ int64_t cl, r1, r2;\r
+ struct vec mime_vec;\r
+ int n;\r
+\r
+ get_mime_type(conn->ctx, path, &mime_vec);\r
+ cl = filep->size;\r
+ conn->status_code = 200;\r
+ range[0] = '\0';\r
+\r
+ if (!mg_fopen(conn, path, "rb", filep)) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "fopen(%s): %s", path, strerror(ERRNO));\r
+ return;\r
+ }\r
+ fclose_on_exec(filep);\r
+\r
+ // If Range: header specified, act accordingly\r
+ r1 = r2 = 0;\r
+ hdr = mg_get_header(conn, "Range");\r
+ if (hdr != NULL && (n = parse_range_header(hdr, &r1, &r2)) > 0 &&\r
+ r1 >= 0 && r2 >= 0) {\r
+ conn->status_code = 206;\r
+ cl = n == 2 ? (r2 > cl ? cl : r2) - r1 + 1: cl - r1;\r
+ mg_snprintf(conn, range, sizeof(range),\r
+ "Content-Range: bytes "\r
+ "%" INT64_FMT "-%"\r
+ INT64_FMT "/%" INT64_FMT "\r\n",\r
+ r1, r1 + cl - 1, filep->size);\r
+ msg = "Partial Content";\r
+ }\r
+\r
+ // Prepare Etag, Date, Last-Modified headers. Must be in UTC, according to\r
+ // http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3\r
+ gmt_time_string(date, sizeof(date), &curtime);\r
+ gmt_time_string(lm, sizeof(lm), &filep->modification_time);\r
+ construct_etag(etag, sizeof(etag), filep);\r
+\r
+ (void) mg_printf(conn,\r
+ "HTTP/1.1 %d %s\r\n"\r
+ "Date: %s\r\n"\r
+ "Last-Modified: %s\r\n"\r
+ "Etag: %s\r\n"\r
+ "Content-Type: %.*s\r\n"\r
+ "Content-Length: %" INT64_FMT "\r\n"\r
+ "Connection: %s\r\n"\r
+ "Accept-Ranges: bytes\r\n"\r
+ "%s\r\n",\r
+ conn->status_code, msg, date, lm, etag, (int) mime_vec.len,\r
+ mime_vec.ptr, cl, suggest_connection_header(conn), range);\r
+\r
+ if (strcmp(conn->request_info.request_method, "HEAD") != 0) {\r
+ send_file_data(conn, filep, r1, cl);\r
+ }\r
+ mg_fclose(filep);\r
+}\r
+\r
+void mg_send_file(struct mg_connection *conn, const char *path) {\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ if (mg_stat(conn, path, &file)) {\r
+ handle_file_request(conn, path, &file);\r
+ } else {\r
+ send_http_error(conn, 404, "Not Found", "%s", "File not found");\r
+ }\r
+}\r
+\r
+\r
+// Parse HTTP headers from the given buffer, advance buffer to the point\r
+// where parsing stopped.\r
+static void parse_http_headers(char **buf, struct mg_request_info *ri) {\r
+ int i;\r
+\r
+ for (i = 0; i < (int) ARRAY_SIZE(ri->http_headers); i++) {\r
+ ri->http_headers[i].name = skip_quoted(buf, ":", " ", 0);\r
+ ri->http_headers[i].value = skip(buf, "\r\n");\r
+ if (ri->http_headers[i].name[0] == '\0')\r
+ break;\r
+ ri->num_headers = i + 1;\r
+ }\r
+}\r
+\r
+static int is_valid_http_method(const char *method) {\r
+ return !strcmp(method, "GET") || !strcmp(method, "POST") ||\r
+ !strcmp(method, "HEAD") || !strcmp(method, "CONNECT") ||\r
+ !strcmp(method, "PUT") || !strcmp(method, "DELETE") ||\r
+ !strcmp(method, "OPTIONS") || !strcmp(method, "PROPFIND");\r
+}\r
+\r
+// Parse HTTP request, fill in mg_request_info structure.\r
+// This function modifies the buffer by NUL-terminating\r
+// HTTP request components, header names and header values.\r
+static int parse_http_message(char *buf, int len, struct mg_request_info *ri) {\r
+ int is_request, request_length = get_request_len(buf, len);\r
+ if (request_length > 0) {\r
+ // Reset attributes. DO NOT TOUCH is_ssl, remote_ip, remote_port\r
+ ri->remote_user = ri->request_method = ri->uri = ri->http_version = NULL;\r
+ ri->num_headers = 0;\r
+\r
+ buf[request_length - 1] = '\0';\r
+\r
+ // RFC says that all initial whitespaces should be ingored\r
+ while (*buf != '\0' && isspace(* (unsigned char *) buf)) {\r
+ buf++;\r
+ }\r
+ ri->request_method = skip(&buf, " ");\r
+ ri->uri = skip(&buf, " ");\r
+ ri->http_version = skip(&buf, "\r\n");\r
+ if (((is_request = is_valid_http_method(ri->request_method)) &&\r
+ memcmp(ri->http_version, "HTTP/", 5) != 0) ||\r
+ (!is_request && memcmp(ri->request_method, "HTTP/", 5)) != 0) {\r
+ request_length = -1;\r
+ } else {\r
+ if (is_request) {\r
+ ri->http_version += 5;\r
+ }\r
+ parse_http_headers(&buf, ri);\r
+ }\r
+ }\r
+ return request_length;\r
+}\r
+\r
+// Keep reading the input (either opened file descriptor fd, or socket sock,\r
+// or SSL descriptor ssl) into buffer buf, until \r\n\r\n appears in the\r
+// buffer (which marks the end of HTTP request). Buffer buf may already\r
+// have some data. The length of the data is stored in nread.\r
+// Upon every read operation, increase nread by the number of bytes read.\r
+static int read_request(FILE *fp, struct mg_connection *conn,\r
+ char *buf, int bufsiz, int *nread) {\r
+ int request_len, n = 0;\r
+\r
+ request_len = get_request_len(buf, *nread);\r
+ while (*nread < bufsiz && request_len == 0 &&\r
+ (n = pull(fp, conn, buf + *nread, bufsiz - *nread)) > 0) {\r
+ *nread += n;\r
+ assert(*nread <= bufsiz);\r
+ request_len = get_request_len(buf, *nread);\r
+ }\r
+\r
+ return request_len <= 0 && n <= 0 ? -1 : request_len;\r
+}\r
+\r
+// For given directory path, substitute it to valid index file.\r
+// Return 0 if index file has been found, -1 if not found.\r
+// If the file is found, it's stats is returned in stp.\r
+static int substitute_index_file(struct mg_connection *conn, char *path,\r
+ size_t path_len, struct file *filep) {\r
+ const char *list = conn->ctx->config[INDEX_FILES];\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ struct vec filename_vec;\r
+ size_t n = strlen(path);\r
+ int found = 0;\r
+\r
+ // The 'path' given to us points to the directory. Remove all trailing\r
+ // directory separator characters from the end of the path, and\r
+ // then append single directory separator character.\r
+ while (n > 0 && path[n - 1] == '/') {\r
+ n--;\r
+ }\r
+ path[n] = '/';\r
+\r
+ // Traverse index files list. For each entry, append it to the given\r
+ // path and see if the file exists. If it exists, break the loop\r
+ while ((list = next_option(list, &filename_vec, NULL)) != NULL) {\r
+\r
+ // Ignore too long entries that may overflow path buffer\r
+ if (filename_vec.len > path_len - (n + 2))\r
+ continue;\r
+\r
+ // Prepare full path to the index file\r
+ mg_strlcpy(path + n + 1, filename_vec.ptr, filename_vec.len + 1);\r
+\r
+ // Does it exist?\r
+ if (mg_stat(conn, path, &file)) {\r
+ // Yes it does, break the loop\r
+ *filep = file;\r
+ found = 1;\r
+ break;\r
+ }\r
+ }\r
+\r
+ // If no index file exists, restore directory path\r
+ if (!found) {\r
+ path[n] = '\0';\r
+ }\r
+\r
+ return found;\r
+}\r
+\r
+// Return True if we should reply 304 Not Modified.\r
+static int is_not_modified(const struct mg_connection *conn,\r
+ const struct file *filep) {\r
+ char etag[64];\r
+ const char *ims = mg_get_header(conn, "If-Modified-Since");\r
+ const char *inm = mg_get_header(conn, "If-None-Match");\r
+ construct_etag(etag, sizeof(etag), filep);\r
+ return (inm != NULL && !mg_strcasecmp(etag, inm)) ||\r
+ (ims != NULL && filep->modification_time <= parse_date_string(ims));\r
+}\r
+\r
+static int forward_body_data(struct mg_connection *conn, FILE *fp,\r
+ SOCKET sock, SSL *ssl) {\r
+ const char *expect, *body;\r
+ char buf[MG_BUF_LEN];\r
+ int to_read, nread, buffered_len, success = 0;\r
+\r
+ expect = mg_get_header(conn, "Expect");\r
+ assert(fp != NULL);\r
+\r
+ if (conn->content_len == -1) {\r
+ send_http_error(conn, 411, "Length Required", "%s", "");\r
+ } else if (expect != NULL && mg_strcasecmp(expect, "100-continue")) {\r
+ send_http_error(conn, 417, "Expectation Failed", "%s", "");\r
+ } else {\r
+ if (expect != NULL) {\r
+ (void) mg_printf(conn, "%s", "HTTP/1.1 100 Continue\r\n\r\n");\r
+ }\r
+\r
+ body = conn->buf + conn->request_len + conn->consumed_content;\r
+ buffered_len = &conn->buf[conn->data_len] - body;\r
+ assert(buffered_len >= 0);\r
+ assert(conn->consumed_content == 0);\r
+\r
+ if (buffered_len > 0) {\r
+ if ((int64_t) buffered_len > conn->content_len) {\r
+ buffered_len = (int) conn->content_len;\r
+ }\r
+ push(fp, sock, ssl, body, (int64_t) buffered_len);\r
+ conn->consumed_content += buffered_len;\r
+ }\r
+\r
+ nread = 0;\r
+ while (conn->consumed_content < conn->content_len) {\r
+ to_read = sizeof(buf);\r
+ if ((int64_t) to_read > conn->content_len - conn->consumed_content) {\r
+ to_read = (int) (conn->content_len - conn->consumed_content);\r
+ }\r
+ nread = pull(NULL, conn, buf, to_read);\r
+ if (nread <= 0 || push(fp, sock, ssl, buf, nread) != nread) {\r
+ break;\r
+ }\r
+ conn->consumed_content += nread;\r
+ }\r
+\r
+ if (conn->consumed_content == conn->content_len) {\r
+ success = nread >= 0;\r
+ }\r
+\r
+ // Each error code path in this function must send an error\r
+ if (!success) {\r
+ send_http_error(conn, 577, http_500_error, "%s", "");\r
+ }\r
+ }\r
+\r
+ return success;\r
+}\r
+\r
+#if !defined(NO_CGI)\r
+// This structure helps to create an environment for the spawned CGI program.\r
+// Environment is an array of "VARIABLE=VALUE\0" ASCIIZ strings,\r
+// last element must be NULL.\r
+// However, on Windows there is a requirement that all these VARIABLE=VALUE\0\r
+// strings must reside in a contiguous buffer. The end of the buffer is\r
+// marked by two '\0' characters.\r
+// We satisfy both worlds: we create an envp array (which is vars), all\r
+// entries are actually pointers inside buf.\r
+struct cgi_env_block {\r
+ struct mg_connection *conn;\r
+ char buf[CGI_ENVIRONMENT_SIZE]; // Environment buffer\r
+ int len; // Space taken\r
+ char *vars[MAX_CGI_ENVIR_VARS]; // char **envp\r
+ int nvars; // Number of variables\r
+};\r
+\r
+static char *addenv(struct cgi_env_block *block,\r
+ PRINTF_FORMAT_STRING(const char *fmt), ...)\r
+ PRINTF_ARGS(2, 3);\r
+\r
+// Append VARIABLE=VALUE\0 string to the buffer, and add a respective\r
+// pointer into the vars array.\r
+static char *addenv(struct cgi_env_block *block, const char *fmt, ...) {\r
+ int n, space;\r
+ char *added;\r
+ va_list ap;\r
+\r
+ // Calculate how much space is left in the buffer\r
+ space = sizeof(block->buf) - block->len - 2;\r
+ assert(space >= 0);\r
+\r
+ // Make a pointer to the free space int the buffer\r
+ added = block->buf + block->len;\r
+\r
+ // Copy VARIABLE=VALUE\0 string into the free space\r
+ va_start(ap, fmt);\r
+ n = mg_vsnprintf(block->conn, added, (size_t) space, fmt, ap);\r
+ va_end(ap);\r
+\r
+ // Make sure we do not overflow buffer and the envp array\r
+ if (n > 0 && n + 1 < space &&\r
+ block->nvars < (int) ARRAY_SIZE(block->vars) - 2) {\r
+ // Append a pointer to the added string into the envp array\r
+ block->vars[block->nvars++] = added;\r
+ // Bump up used length counter. Include \0 terminator\r
+ block->len += n + 1;\r
+ } else {\r
+ cry(block->conn, "%s: CGI env buffer truncated for [%s]", __func__, fmt);\r
+ }\r
+\r
+ return added;\r
+}\r
+\r
+static void prepare_cgi_environment(struct mg_connection *conn,\r
+ const char *prog,\r
+ struct cgi_env_block *blk) {\r
+ const char *s, *slash;\r
+ struct vec var_vec;\r
+ char *p, src_addr[20];\r
+ int i;\r
+\r
+ blk->len = blk->nvars = 0;\r
+ blk->conn = conn;\r
+ sockaddr_to_string(src_addr, sizeof(src_addr), &conn->client.rsa);\r
+\r
+ addenv(blk, "SERVER_NAME=%s", conn->ctx->config[AUTHENTICATION_DOMAIN]);\r
+ addenv(blk, "SERVER_ROOT=%s", conn->ctx->config[DOCUMENT_ROOT]);\r
+ addenv(blk, "DOCUMENT_ROOT=%s", conn->ctx->config[DOCUMENT_ROOT]);\r
+\r
+ // Prepare the environment block\r
+ addenv(blk, "%s", "GATEWAY_INTERFACE=CGI/1.1");\r
+ addenv(blk, "%s", "SERVER_PROTOCOL=HTTP/1.1");\r
+ addenv(blk, "%s", "REDIRECT_STATUS=200"); // For PHP\r
+\r
+ // TODO(lsm): fix this for IPv6 case\r
+ addenv(blk, "SERVER_PORT=%d", ntohs(conn->client.lsa.sin.sin_port));\r
+\r
+ addenv(blk, "REQUEST_METHOD=%s", conn->request_info.request_method);\r
+ addenv(blk, "REMOTE_ADDR=%s", src_addr);\r
+ addenv(blk, "REMOTE_PORT=%d", conn->request_info.remote_port);\r
+ addenv(blk, "REQUEST_URI=%s", conn->request_info.uri);\r
+\r
+ // SCRIPT_NAME\r
+ assert(conn->request_info.uri[0] == '/');\r
+ slash = strrchr(conn->request_info.uri, '/');\r
+ if ((s = strrchr(prog, '/')) == NULL)\r
+ s = prog;\r
+ addenv(blk, "SCRIPT_NAME=%.*s%s", (int) (slash - conn->request_info.uri),\r
+ conn->request_info.uri, s);\r
+\r
+ addenv(blk, "SCRIPT_FILENAME=%s", prog);\r
+ addenv(blk, "PATH_TRANSLATED=%s", prog);\r
+ addenv(blk, "HTTPS=%s", conn->ssl == NULL ? "off" : "on");\r
+\r
+ if ((s = mg_get_header(conn, "Content-Type")) != NULL)\r
+ addenv(blk, "CONTENT_TYPE=%s", s);\r
+\r
+ if (conn->request_info.query_string != NULL)\r
+ addenv(blk, "QUERY_STRING=%s", conn->request_info.query_string);\r
+\r
+ if ((s = mg_get_header(conn, "Content-Length")) != NULL)\r
+ addenv(blk, "CONTENT_LENGTH=%s", s);\r
+\r
+ if ((s = getenv("PATH")) != NULL)\r
+ addenv(blk, "PATH=%s", s);\r
+\r
+ if (conn->path_info != NULL) {\r
+ addenv(blk, "PATH_INFO=%s", conn->path_info);\r
+ }\r
+\r
+#if defined(_WIN32)\r
+ if ((s = getenv("COMSPEC")) != NULL) {\r
+ addenv(blk, "COMSPEC=%s", s);\r
+ }\r
+ if ((s = getenv("SYSTEMROOT")) != NULL) {\r
+ addenv(blk, "SYSTEMROOT=%s", s);\r
+ }\r
+ if ((s = getenv("SystemDrive")) != NULL) {\r
+ addenv(blk, "SystemDrive=%s", s);\r
+ }\r
+ if ((s = getenv("ProgramFiles")) != NULL) {\r
+ addenv(blk, "ProgramFiles=%s", s);\r
+ }\r
+ if ((s = getenv("ProgramFiles(x86)")) != NULL) {\r
+ addenv(blk, "ProgramFiles(x86)=%s", s);\r
+ }\r
+#else\r
+ if ((s = getenv("LD_LIBRARY_PATH")) != NULL)\r
+ addenv(blk, "LD_LIBRARY_PATH=%s", s);\r
+#endif // _WIN32\r
+\r
+ if ((s = getenv("PERLLIB")) != NULL)\r
+ addenv(blk, "PERLLIB=%s", s);\r
+\r
+ if (conn->request_info.remote_user != NULL) {\r
+ addenv(blk, "REMOTE_USER=%s", conn->request_info.remote_user);\r
+ addenv(blk, "%s", "AUTH_TYPE=Digest");\r
+ }\r
+\r
+ // Add all headers as HTTP_* variables\r
+ for (i = 0; i < conn->request_info.num_headers; i++) {\r
+ p = addenv(blk, "HTTP_%s=%s",\r
+ conn->request_info.http_headers[i].name,\r
+ conn->request_info.http_headers[i].value);\r
+\r
+ // Convert variable name into uppercase, and change - to _\r
+ for (; *p != '=' && *p != '\0'; p++) {\r
+ if (*p == '-')\r
+ *p = '_';\r
+ *p = (char) toupper(* (unsigned char *) p);\r
+ }\r
+ }\r
+\r
+ // Add user-specified variables\r
+ s = conn->ctx->config[CGI_ENVIRONMENT];\r
+ while ((s = next_option(s, &var_vec, NULL)) != NULL) {\r
+ addenv(blk, "%.*s", (int) var_vec.len, var_vec.ptr);\r
+ }\r
+\r
+ blk->vars[blk->nvars++] = NULL;\r
+ blk->buf[blk->len++] = '\0';\r
+\r
+ assert(blk->nvars < (int) ARRAY_SIZE(blk->vars));\r
+ assert(blk->len > 0);\r
+ assert(blk->len < (int) sizeof(blk->buf));\r
+}\r
+\r
+static void handle_cgi_request(struct mg_connection *conn, const char *prog) {\r
+ int headers_len, data_len, i, fd_stdin[2], fd_stdout[2];\r
+ const char *status, *status_text;\r
+ char buf[16384], *pbuf, dir[PATH_MAX], *p;\r
+ struct mg_request_info ri;\r
+ struct cgi_env_block blk;\r
+ FILE *in, *out;\r
+ struct file fout = STRUCT_FILE_INITIALIZER;\r
+ pid_t pid;\r
+\r
+ prepare_cgi_environment(conn, prog, &blk);\r
+\r
+ // CGI must be executed in its own directory. 'dir' must point to the\r
+ // directory containing executable program, 'p' must point to the\r
+ // executable program name relative to 'dir'.\r
+ (void) mg_snprintf(conn, dir, sizeof(dir), "%s", prog);\r
+ if ((p = strrchr(dir, '/')) != NULL) {\r
+ *p++ = '\0';\r
+ } else {\r
+ dir[0] = '.', dir[1] = '\0';\r
+ p = (char *) prog;\r
+ }\r
+\r
+ pid = (pid_t) -1;\r
+ fd_stdin[0] = fd_stdin[1] = fd_stdout[0] = fd_stdout[1] = -1;\r
+ in = out = NULL;\r
+\r
+ if (pipe(fd_stdin) != 0 || pipe(fd_stdout) != 0) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "Cannot create CGI pipe: %s", strerror(ERRNO));\r
+ goto done;\r
+ }\r
+\r
+ pid = spawn_process(conn, p, blk.buf, blk.vars, fd_stdin[0], fd_stdout[1],\r
+ dir);\r
+ // spawn_process() must close those!\r
+ // If we don't mark them as closed, close() attempt before\r
+ // return from this function throws an exception on Windows.\r
+ // Windows does not like when closed descriptor is closed again.\r
+ fd_stdin[0] = fd_stdout[1] = -1;\r
+\r
+ if (pid == (pid_t) -1) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "Cannot spawn CGI process [%s]: %s", prog, strerror(ERRNO));\r
+ goto done;\r
+ }\r
+\r
+ if ((in = fdopen(fd_stdin[1], "wb")) == NULL ||\r
+ (out = fdopen(fd_stdout[0], "rb")) == NULL) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "fopen: %s", strerror(ERRNO));\r
+ goto done;\r
+ }\r
+\r
+ setbuf(in, NULL);\r
+ setbuf(out, NULL);\r
+ fout.fp = out;\r
+\r
+ // Send POST data to the CGI process if needed\r
+ if (!strcmp(conn->request_info.request_method, "POST") &&\r
+ !forward_body_data(conn, in, INVALID_SOCKET, NULL)) {\r
+ goto done;\r
+ }\r
+\r
+ // Close so child gets an EOF.\r
+ fclose(in);\r
+ in = NULL;\r
+ fd_stdin[1] = -1;\r
+\r
+ // Now read CGI reply into a buffer. We need to set correct\r
+ // status code, thus we need to see all HTTP headers first.\r
+ // Do not send anything back to client, until we buffer in all\r
+ // HTTP headers.\r
+ data_len = 0;\r
+ headers_len = read_request(out, conn, buf, sizeof(buf), &data_len);\r
+ if (headers_len <= 0) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "CGI program sent malformed or too big (>%u bytes) "\r
+ "HTTP headers: [%.*s]",\r
+ (unsigned) sizeof(buf), data_len, buf);\r
+ goto done;\r
+ }\r
+ pbuf = buf;\r
+ buf[headers_len - 1] = '\0';\r
+ parse_http_headers(&pbuf, &ri);\r
+\r
+ // Make up and send the status line\r
+ status_text = "OK";\r
+ if ((status = get_header(&ri, "Status")) != NULL) {\r
+ conn->status_code = atoi(status);\r
+ status_text = status;\r
+ while (isdigit(* (unsigned char *) status_text) || *status_text == ' ') {\r
+ status_text++;\r
+ }\r
+ } else if (get_header(&ri, "Location") != NULL) {\r
+ conn->status_code = 302;\r
+ } else {\r
+ conn->status_code = 200;\r
+ }\r
+ if (get_header(&ri, "Connection") != NULL &&\r
+ !mg_strcasecmp(get_header(&ri, "Connection"), "keep-alive")) {\r
+ conn->must_close = 1;\r
+ }\r
+ (void) mg_printf(conn, "HTTP/1.1 %d %s\r\n", conn->status_code,\r
+ status_text);\r
+\r
+ // Send headers\r
+ for (i = 0; i < ri.num_headers; i++) {\r
+ mg_printf(conn, "%s: %s\r\n",\r
+ ri.http_headers[i].name, ri.http_headers[i].value);\r
+ }\r
+ mg_write(conn, "\r\n", 2);\r
+\r
+ // Send chunk of data that may have been read after the headers\r
+ conn->num_bytes_sent += mg_write(conn, buf + headers_len,\r
+ (size_t)(data_len - headers_len));\r
+\r
+ // Read the rest of CGI output and send to the client\r
+ send_file_data(conn, &fout, 0, INT64_MAX);\r
+\r
+done:\r
+ if (pid != (pid_t) -1) {\r
+ kill(pid, SIGKILL);\r
+ }\r
+ if (fd_stdin[0] != -1) {\r
+ close(fd_stdin[0]);\r
+ }\r
+ if (fd_stdout[1] != -1) {\r
+ close(fd_stdout[1]);\r
+ }\r
+\r
+ if (in != NULL) {\r
+ fclose(in);\r
+ } else if (fd_stdin[1] != -1) {\r
+ close(fd_stdin[1]);\r
+ }\r
+\r
+ if (out != NULL) {\r
+ fclose(out);\r
+ } else if (fd_stdout[0] != -1) {\r
+ close(fd_stdout[0]);\r
+ }\r
+}\r
+#endif // !NO_CGI\r
+\r
+// For a given PUT path, create all intermediate subdirectories\r
+// for given path. Return 0 if the path itself is a directory,\r
+// or -1 on error, 1 if OK.\r
+static int put_dir(struct mg_connection *conn, const char *path) {\r
+ char buf[PATH_MAX];\r
+ const char *s, *p;\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ int len, res = 1;\r
+\r
+ for (s = p = path + 2; (p = strchr(s, '/')) != NULL; s = ++p) {\r
+ len = p - path;\r
+ if (len >= (int) sizeof(buf)) {\r
+ res = -1;\r
+ break;\r
+ }\r
+ memcpy(buf, path, len);\r
+ buf[len] = '\0';\r
+\r
+ // Try to create intermediate directory\r
+ DEBUG_TRACE(("mkdir(%s)", buf));\r
+ if (!mg_stat(conn, buf, &file) && mg_mkdir(buf, 0755) != 0) {\r
+ res = -1;\r
+ break;\r
+ }\r
+\r
+ // Is path itself a directory?\r
+ if (p[1] == '\0') {\r
+ res = 0;\r
+ }\r
+ }\r
+\r
+ return res;\r
+}\r
+\r
+static void put_file(struct mg_connection *conn, const char *path) {\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ const char *range;\r
+ int64_t r1, r2;\r
+ int rc;\r
+\r
+ conn->status_code = mg_stat(conn, path, &file) ? 200 : 201;\r
+\r
+ if ((rc = put_dir(conn, path)) == 0) {\r
+ mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n", conn->status_code);\r
+ } else if (rc == -1) {\r
+ send_http_error(conn, 500, http_500_error,\r
+ "put_dir(%s): %s", path, strerror(ERRNO));\r
+ } else if (!mg_fopen(conn, path, "wb+", &file) || file.fp == NULL) {\r
+ mg_fclose(&file);\r
+ send_http_error(conn, 500, http_500_error,\r
+ "fopen(%s): %s", path, strerror(ERRNO));\r
+ } else {\r
+ fclose_on_exec(&file);\r
+ range = mg_get_header(conn, "Content-Range");\r
+ r1 = r2 = 0;\r
+ if (range != NULL && parse_range_header(range, &r1, &r2) > 0) {\r
+ conn->status_code = 206;\r
+ fseeko(file.fp, r1, SEEK_SET);\r
+ }\r
+ if (forward_body_data(conn, file.fp, INVALID_SOCKET, NULL)) {\r
+ mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n", conn->status_code);\r
+ }\r
+ mg_fclose(&file);\r
+ }\r
+}\r
+\r
+static void send_ssi_file(struct mg_connection *, const char *,\r
+ struct file *, int);\r
+\r
+static void do_ssi_include(struct mg_connection *conn, const char *ssi,\r
+ char *tag, int include_level) {\r
+ char file_name[MG_BUF_LEN], path[PATH_MAX], *p;\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+\r
+ // sscanf() is safe here, since send_ssi_file() also uses buffer\r
+ // of size MG_BUF_LEN to get the tag. So strlen(tag) is always < MG_BUF_LEN.\r
+ if (sscanf(tag, " virtual=\"%[^\"]\"", file_name) == 1) {\r
+ // File name is relative to the webserver root\r
+ (void) mg_snprintf(conn, path, sizeof(path), "%s%c%s",\r
+ conn->ctx->config[DOCUMENT_ROOT], '/', file_name);\r
+ } else if (sscanf(tag, " file=\"%[^\"]\"", file_name) == 1) {\r
+ // File name is relative to the webserver working directory\r
+ // or it is absolute system path\r
+ (void) mg_snprintf(conn, path, sizeof(path), "%s", file_name);\r
+ } else if (sscanf(tag, " \"%[^\"]\"", file_name) == 1) {\r
+ // File name is relative to the currect document\r
+ (void) mg_snprintf(conn, path, sizeof(path), "%s", ssi);\r
+ if ((p = strrchr(path, '/')) != NULL) {\r
+ p[1] = '\0';\r
+ }\r
+ (void) mg_snprintf(conn, path + strlen(path),\r
+ sizeof(path) - strlen(path), "%s", file_name);\r
+ } else {\r
+ cry(conn, "Bad SSI #include: [%s]", tag);\r
+ return;\r
+ }\r
+\r
+ if (!mg_fopen(conn, path, "rb", &file)) {\r
+ cry(conn, "Cannot open SSI #include: [%s]: fopen(%s): %s",\r
+ tag, path, strerror(ERRNO));\r
+ } else {\r
+ fclose_on_exec(&file);\r
+ if (match_prefix(conn->ctx->config[SSI_EXTENSIONS],\r
+ strlen(conn->ctx->config[SSI_EXTENSIONS]), path) > 0) {\r
+ send_ssi_file(conn, path, &file, include_level + 1);\r
+ } else {\r
+ send_file_data(conn, &file, 0, INT64_MAX);\r
+ }\r
+ mg_fclose(&file);\r
+ }\r
+}\r
+\r
+#if !defined(NO_POPEN)\r
+static void do_ssi_exec(struct mg_connection *conn, char *tag) {\r
+ char cmd[MG_BUF_LEN];\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+\r
+ if (sscanf(tag, " \"%[^\"]\"", cmd) != 1) {\r
+ cry(conn, "Bad SSI #exec: [%s]", tag);\r
+ } else if ((file.fp = popen(cmd, "r")) == NULL) {\r
+ cry(conn, "Cannot SSI #exec: [%s]: %s", cmd, strerror(ERRNO));\r
+ } else {\r
+ send_file_data(conn, &file, 0, INT64_MAX);\r
+ pclose(file.fp);\r
+ }\r
+}\r
+#endif // !NO_POPEN\r
+\r
+static int mg_fgetc(struct file *filep, int offset) {\r
+ if (filep->membuf != NULL && offset >=0 && offset < filep->size) {\r
+ return ((unsigned char *) filep->membuf)[offset];\r
+ } else if (filep->fp != NULL) {\r
+ return fgetc(filep->fp);\r
+ } else {\r
+ return EOF;\r
+ }\r
+}\r
+\r
+static void send_ssi_file(struct mg_connection *conn, const char *path,\r
+ struct file *filep, int include_level) {\r
+ char buf[MG_BUF_LEN];\r
+ int ch, offset, len, in_ssi_tag;\r
+\r
+ if (include_level > 10) {\r
+ cry(conn, "SSI #include level is too deep (%s)", path);\r
+ return;\r
+ }\r
+\r
+ in_ssi_tag = len = offset = 0;\r
+ while ((ch = mg_fgetc(filep, offset)) != EOF) {\r
+ if (in_ssi_tag && ch == '>') {\r
+ in_ssi_tag = 0;\r
+ buf[len++] = (char) ch;\r
+ buf[len] = '\0';\r
+ assert(len <= (int) sizeof(buf));\r
+ if (len < 6 || memcmp(buf, "<!--#", 5) != 0) {\r
+ // Not an SSI tag, pass it\r
+ (void) mg_write(conn, buf, (size_t) len);\r
+ } else {\r
+ if (!memcmp(buf + 5, "include", 7)) {\r
+ do_ssi_include(conn, path, buf + 12, include_level);\r
+#if !defined(NO_POPEN)\r
+ } else if (!memcmp(buf + 5, "exec", 4)) {\r
+ do_ssi_exec(conn, buf + 9);\r
+#endif // !NO_POPEN\r
+ } else {\r
+ cry(conn, "%s: unknown SSI " "command: \"%s\"", path, buf);\r
+ }\r
+ }\r
+ len = 0;\r
+ } else if (in_ssi_tag) {\r
+ if (len == 5 && memcmp(buf, "<!--#", 5) != 0) {\r
+ // Not an SSI tag\r
+ in_ssi_tag = 0;\r
+ } else if (len == (int) sizeof(buf) - 2) {\r
+ cry(conn, "%s: SSI tag is too large", path);\r
+ len = 0;\r
+ }\r
+ buf[len++] = ch & 0xff;\r
+ } else if (ch == '<') {\r
+ in_ssi_tag = 1;\r
+ if (len > 0) {\r
+ mg_write(conn, buf, (size_t) len);\r
+ }\r
+ len = 0;\r
+ buf[len++] = ch & 0xff;\r
+ } else {\r
+ buf[len++] = ch & 0xff;\r
+ if (len == (int) sizeof(buf)) {\r
+ mg_write(conn, buf, (size_t) len);\r
+ len = 0;\r
+ }\r
+ }\r
+ }\r
+\r
+ // Send the rest of buffered data\r
+ if (len > 0) {\r
+ mg_write(conn, buf, (size_t) len);\r
+ }\r
+}\r
+\r
+static void handle_ssi_file_request(struct mg_connection *conn,\r
+ const char *path) {\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+\r
+ if (!mg_fopen(conn, path, "rb", &file)) {\r
+ send_http_error(conn, 500, http_500_error, "fopen(%s): %s", path,\r
+ strerror(ERRNO));\r
+ } else {\r
+ conn->must_close = 1;\r
+ fclose_on_exec(&file);\r
+ mg_printf(conn, "HTTP/1.1 200 OK\r\n"\r
+ "Content-Type: text/html\r\nConnection: %s\r\n\r\n",\r
+ suggest_connection_header(conn));\r
+ send_ssi_file(conn, path, &file, 0);\r
+ mg_fclose(&file);\r
+ }\r
+}\r
+\r
+static void send_options(struct mg_connection *conn) {\r
+ conn->status_code = 200;\r
+\r
+ mg_printf(conn, "%s", "HTTP/1.1 200 OK\r\n"\r
+ "Allow: GET, POST, HEAD, CONNECT, PUT, DELETE, OPTIONS\r\n"\r
+ "DAV: 1\r\n\r\n");\r
+}\r
+\r
+// Writes PROPFIND properties for a collection element\r
+static void print_props(struct mg_connection *conn, const char* uri,\r
+ struct file *filep) {\r
+ char mtime[64];\r
+ gmt_time_string(mtime, sizeof(mtime), &filep->modification_time);\r
+ conn->num_bytes_sent += mg_printf(conn,\r
+ "<d:response>"\r
+ "<d:href>%s</d:href>"\r
+ "<d:propstat>"\r
+ "<d:prop>"\r
+ "<d:resourcetype>%s</d:resourcetype>"\r
+ "<d:getcontentlength>%" INT64_FMT "</d:getcontentlength>"\r
+ "<d:getlastmodified>%s</d:getlastmodified>"\r
+ "</d:prop>"\r
+ "<d:status>HTTP/1.1 200 OK</d:status>"\r
+ "</d:propstat>"\r
+ "</d:response>\n",\r
+ uri,\r
+ filep->is_directory ? "<d:collection/>" : "",\r
+ filep->size,\r
+ mtime);\r
+}\r
+\r
+static void print_dav_dir_entry(struct de *de, void *data) {\r
+ char href[PATH_MAX];\r
+ struct mg_connection *conn = (struct mg_connection *) data;\r
+ mg_snprintf(conn, href, sizeof(href), "%s%s",\r
+ conn->request_info.uri, de->file_name);\r
+ print_props(conn, href, &de->file);\r
+}\r
+\r
+static void handle_propfind(struct mg_connection *conn, const char *path,\r
+ struct file *filep) {\r
+ const char *depth = mg_get_header(conn, "Depth");\r
+\r
+ conn->must_close = 1;\r
+ conn->status_code = 207;\r
+ mg_printf(conn, "HTTP/1.1 207 Multi-Status\r\n"\r
+ "Connection: close\r\n"\r
+ "Content-Type: text/xml; charset=utf-8\r\n\r\n");\r
+\r
+ conn->num_bytes_sent += mg_printf(conn,\r
+ "<?xml version=\"1.0\" encoding=\"utf-8\"?>"\r
+ "<d:multistatus xmlns:d='DAV:'>\n");\r
+\r
+ // Print properties for the requested resource itself\r
+ print_props(conn, conn->request_info.uri, filep);\r
+\r
+ // If it is a directory, print directory entries too if Depth is not 0\r
+ if (filep->is_directory &&\r
+ !mg_strcasecmp(conn->ctx->config[ENABLE_DIRECTORY_LISTING], "yes") &&\r
+ (depth == NULL || strcmp(depth, "0") != 0)) {\r
+ scan_directory(conn, path, conn, &print_dav_dir_entry);\r
+ }\r
+\r
+ conn->num_bytes_sent += mg_printf(conn, "%s\n", "</d:multistatus>");\r
+}\r
+\r
+#if defined(USE_WEBSOCKET)\r
+\r
+// START OF SHA-1 code\r
+// Copyright(c) By Steve Reid <steve@edmweb.com>\r
+#define SHA1HANDSOFF\r
+#if defined(__sun)\r
+#include "solarisfixes.h"\r
+#endif\r
+\r
+union char64long16 { unsigned char c[64]; uint32_t l[16]; };\r
+\r
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))\r
+\r
+static uint32_t blk0(union char64long16 *block, int i) {\r
+ // Forrest: SHA expect BIG_ENDIAN, swap if LITTLE_ENDIAN\r
+ if (!is_big_endian()) {\r
+ block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) |\r
+ (rol(block->l[i], 8) & 0x00FF00FF);\r
+ }\r
+ return block->l[i];\r
+}\r
+\r
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \\r
+ ^block->l[(i+2)&15]^block->l[i&15],1))\r
+#define S0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(block, i)+0x5A827999+rol(v,5);w=rol(w,30);\r
+#define S1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);\r
+#define S2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);\r
+#define S3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);\r
+#define S4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);\r
+\r
+typedef struct {\r
+ uint32_t state[5];\r
+ uint32_t count[2];\r
+ unsigned char buffer[64];\r
+} SHA1_CTX;\r
+\r
+static void SHA1Transform(uint32_t state[5], const unsigned char buffer[64]) {\r
+ uint32_t a, b, c, d, e;\r
+ union char64long16 block[1];\r
+\r
+ memcpy(block, buffer, 64);\r
+ a = state[0];\r
+ b = state[1];\r
+ c = state[2];\r
+ d = state[3];\r
+ e = state[4];\r
+ S0(a,b,c,d,e, 0); S0(e,a,b,c,d, 1); S0(d,e,a,b,c, 2); S0(c,d,e,a,b, 3);\r
+ S0(b,c,d,e,a, 4); S0(a,b,c,d,e, 5); S0(e,a,b,c,d, 6); S0(d,e,a,b,c, 7);\r
+ S0(c,d,e,a,b, 8); S0(b,c,d,e,a, 9); S0(a,b,c,d,e,10); S0(e,a,b,c,d,11);\r
+ S0(d,e,a,b,c,12); S0(c,d,e,a,b,13); S0(b,c,d,e,a,14); S0(a,b,c,d,e,15);\r
+ S1(e,a,b,c,d,16); S1(d,e,a,b,c,17); S1(c,d,e,a,b,18); S1(b,c,d,e,a,19);\r
+ S2(a,b,c,d,e,20); S2(e,a,b,c,d,21); S2(d,e,a,b,c,22); S2(c,d,e,a,b,23);\r
+ S2(b,c,d,e,a,24); S2(a,b,c,d,e,25); S2(e,a,b,c,d,26); S2(d,e,a,b,c,27);\r
+ S2(c,d,e,a,b,28); S2(b,c,d,e,a,29); S2(a,b,c,d,e,30); S2(e,a,b,c,d,31);\r
+ S2(d,e,a,b,c,32); S2(c,d,e,a,b,33); S2(b,c,d,e,a,34); S2(a,b,c,d,e,35);\r
+ S2(e,a,b,c,d,36); S2(d,e,a,b,c,37); S2(c,d,e,a,b,38); S2(b,c,d,e,a,39);\r
+ S3(a,b,c,d,e,40); S3(e,a,b,c,d,41); S3(d,e,a,b,c,42); S3(c,d,e,a,b,43);\r
+ S3(b,c,d,e,a,44); S3(a,b,c,d,e,45); S3(e,a,b,c,d,46); S3(d,e,a,b,c,47);\r
+ S3(c,d,e,a,b,48); S3(b,c,d,e,a,49); S3(a,b,c,d,e,50); S3(e,a,b,c,d,51);\r
+ S3(d,e,a,b,c,52); S3(c,d,e,a,b,53); S3(b,c,d,e,a,54); S3(a,b,c,d,e,55);\r
+ S3(e,a,b,c,d,56); S3(d,e,a,b,c,57); S3(c,d,e,a,b,58); S3(b,c,d,e,a,59);\r
+ S4(a,b,c,d,e,60); S4(e,a,b,c,d,61); S4(d,e,a,b,c,62); S4(c,d,e,a,b,63);\r
+ S4(b,c,d,e,a,64); S4(a,b,c,d,e,65); S4(e,a,b,c,d,66); S4(d,e,a,b,c,67);\r
+ S4(c,d,e,a,b,68); S4(b,c,d,e,a,69); S4(a,b,c,d,e,70); S4(e,a,b,c,d,71);\r
+ S4(d,e,a,b,c,72); S4(c,d,e,a,b,73); S4(b,c,d,e,a,74); S4(a,b,c,d,e,75);\r
+ S4(e,a,b,c,d,76); S4(d,e,a,b,c,77); S4(c,d,e,a,b,78); S4(b,c,d,e,a,79);\r
+ state[0] += a;\r
+ state[1] += b;\r
+ state[2] += c;\r
+ state[3] += d;\r
+ state[4] += e;\r
+ a = b = c = d = e = 0;\r
+ memset(block, '\0', sizeof(block));\r
+}\r
+\r
+static void SHA1Init(SHA1_CTX* context) {\r
+ context->state[0] = 0x67452301;\r
+ context->state[1] = 0xEFCDAB89;\r
+ context->state[2] = 0x98BADCFE;\r
+ context->state[3] = 0x10325476;\r
+ context->state[4] = 0xC3D2E1F0;\r
+ context->count[0] = context->count[1] = 0;\r
+}\r
+\r
+static void SHA1Update(SHA1_CTX* context, const unsigned char* data,\r
+ uint32_t len) {\r
+ uint32_t i, j;\r
+\r
+ j = context->count[0];\r
+ if ((context->count[0] += len << 3) < j)\r
+ context->count[1]++;\r
+ context->count[1] += (len>>29);\r
+ j = (j >> 3) & 63;\r
+ if ((j + len) > 63) {\r
+ memcpy(&context->buffer[j], data, (i = 64-j));\r
+ SHA1Transform(context->state, context->buffer);\r
+ for ( ; i + 63 < len; i += 64) {\r
+ SHA1Transform(context->state, &data[i]);\r
+ }\r
+ j = 0;\r
+ }\r
+ else i = 0;\r
+ memcpy(&context->buffer[j], &data[i], len - i);\r
+}\r
+\r
+static void SHA1Final(unsigned char digest[20], SHA1_CTX* context) {\r
+ unsigned i;\r
+ unsigned char finalcount[8], c;\r
+\r
+ for (i = 0; i < 8; i++) {\r
+ finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]\r
+ >> ((3-(i & 3)) * 8) ) & 255);\r
+ }\r
+ c = 0200;\r
+ SHA1Update(context, &c, 1);\r
+ while ((context->count[0] & 504) != 448) {\r
+ c = 0000;\r
+ SHA1Update(context, &c, 1);\r
+ }\r
+ SHA1Update(context, finalcount, 8);\r
+ for (i = 0; i < 20; i++) {\r
+ digest[i] = (unsigned char)\r
+ ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);\r
+ }\r
+ memset(context, '\0', sizeof(*context));\r
+ memset(&finalcount, '\0', sizeof(finalcount));\r
+}\r
+// END OF SHA1 CODE\r
+\r
+static void base64_encode(const unsigned char *src, int src_len, char *dst) {\r
+ static const char *b64 =\r
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";\r
+ int i, j, a, b, c;\r
+\r
+ for (i = j = 0; i < src_len; i += 3) {\r
+ a = src[i];\r
+ b = i + 1 >= src_len ? 0 : src[i + 1];\r
+ c = i + 2 >= src_len ? 0 : src[i + 2];\r
+\r
+ dst[j++] = b64[a >> 2];\r
+ dst[j++] = b64[((a & 3) << 4) | (b >> 4)];\r
+ if (i + 1 < src_len) {\r
+ dst[j++] = b64[(b & 15) << 2 | (c >> 6)];\r
+ }\r
+ if (i + 2 < src_len) {\r
+ dst[j++] = b64[c & 63];\r
+ }\r
+ }\r
+ while (j % 4 != 0) {\r
+ dst[j++] = '=';\r
+ }\r
+ dst[j++] = '\0';\r
+}\r
+\r
+static void send_websocket_handshake(struct mg_connection *conn) {\r
+ static const char *magic = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";\r
+ char buf[100], sha[20], b64_sha[sizeof(sha) * 2];\r
+ SHA1_CTX sha_ctx;\r
+\r
+ mg_snprintf(conn, buf, sizeof(buf), "%s%s",\r
+ mg_get_header(conn, "Sec-WebSocket-Key"), magic);\r
+ SHA1Init(&sha_ctx);\r
+ SHA1Update(&sha_ctx, (unsigned char *) buf, strlen(buf));\r
+ SHA1Final((unsigned char *) sha, &sha_ctx);\r
+ base64_encode((unsigned char *) sha, sizeof(sha), b64_sha);\r
+ mg_printf(conn, "%s%s%s",\r
+ "HTTP/1.1 101 Switching Protocols\r\n"\r
+ "Upgrade: websocket\r\n"\r
+ "Connection: Upgrade\r\n"\r
+// "Sec-WebSocket-Accept: ", b64_sha, "\r\n\r\n");\r
+ "Sec-WebSocket-Accept: ", b64_sha, "\r\n");\r
+}\r
+\r
+static void read_websocket(struct mg_connection *conn) {\r
+ unsigned char *buf = (unsigned char *) conn->buf + conn->request_len;\r
+ int bits, n, stop = 0;\r
+ size_t i, len, mask_len, data_len, header_len, body_len;\r
+ char mem[4 * 1024], mask[4], *data;\r
+\r
+ assert(conn->content_len == 0);\r
+ while (!stop) {\r
+ header_len = 0;\r
+ if ((body_len = conn->data_len - conn->request_len) >= 2) {\r
+ len = buf[1] & 127;\r
+ mask_len = buf[1] & 128 ? 4 : 0;\r
+ if (len < 126 && body_len >= mask_len) {\r
+ data_len = len;\r
+ header_len = 2 + mask_len;\r
+ } else if (len == 126 && body_len >= 4 + mask_len) {\r
+ header_len = 4 + mask_len;\r
+ data_len = ((((int) buf[2]) << 8) + buf[3]);\r
+ } else if (body_len >= 10 + mask_len) {\r
+ header_len = 10 + mask_len;\r
+ data_len = (((uint64_t) htonl(* (uint32_t *) &buf[2])) << 32) +\r
+ htonl(* (uint32_t *) &buf[6]);\r
+ }\r
+ }\r
+\r
+ // Data layout is as follows:\r
+ // conn->buf buf\r
+ // v v frame1 | frame2\r
+ // |---------------------|----------------|--------------|-------\r
+ // | |<--header_len-->|<--data_len-->|\r
+ // |<-conn->request_len->|<-----body_len----------->|\r
+ // |<-------------------conn->data_len------------->|\r
+\r
+ if (header_len > 0) {\r
+ // Allocate space to hold websocket payload\r
+ data = mem;\r
+ if (data_len > sizeof(mem) && (data = malloc(data_len)) == NULL) {\r
+ // Allocation failed, exit the loop and then close the connection\r
+ // TODO: notify user about the failure\r
+ break;\r
+ }\r
+\r
+ // Save mask and bits, otherwise it may be clobbered by memmove below\r
+ bits = buf[0];\r
+ memcpy(mask, buf + header_len - mask_len, mask_len);\r
+\r
+ // Read frame payload into the allocated buffer.\r
+ assert(body_len >= header_len);\r
+ if (data_len + header_len > body_len) {\r
+ len = body_len - header_len;\r
+ memcpy(data, buf + header_len, len);\r
+ // TODO: handle pull error\r
+ pull_all(NULL, conn, data + len, data_len - len);\r
+ conn->data_len = conn->request_len;\r
+ } else {\r
+ len = data_len + header_len;\r
+ memcpy(data, buf + header_len, data_len);\r
+ memmove(buf, buf + len, body_len - len);\r
+ conn->data_len -= len;\r
+ }\r
+\r
+ // Apply mask if necessary\r
+ if (mask_len > 0) {\r
+ for (i = 0; i < data_len; i++) {\r
+ data[i] ^= mask[i % 4];\r
+ }\r
+ }\r
+\r
+ // Exit the loop if callback signalled to exit,\r
+ // or "connection close" opcode received.\r
+ if ((conn->ctx->callbacks.websocket_data != NULL &&\r
+ !conn->ctx->callbacks.websocket_data(conn, bits, data, data_len)) ||\r
+ (bits & 0xf) == 8) { // Opcode == 8, connection close\r
+ stop = 1;\r
+ }\r
+\r
+ if (data != mem) {\r
+ free(data);\r
+ }\r
+ // Not breaking the loop, process next websocket frame.\r
+ } else {\r
+ // Buffering websocket request\r
+ if ((n = pull(NULL, conn, conn->buf + conn->data_len,\r
+ conn->buf_size - conn->data_len)) <= 0) {\r
+ break;\r
+ }\r
+ conn->data_len += n;\r
+ }\r
+ }\r
+}\r
+\r
+static void handle_websocket_request(struct mg_connection *conn) {\r
+ const char *version = mg_get_header(conn, "Sec-WebSocket-Version");\r
+ if (version == NULL || strcmp(version, "13") != 0) {\r
+ send_http_error(conn, 426, "Upgrade Required", "%s", "Upgrade Required");\r
+ } else if (conn->ctx->callbacks.websocket_connect != NULL &&\r
+ conn->ctx->callbacks.websocket_connect(conn) != 0) {\r
+ // Callback has returned non-zero, do not proceed with handshake\r
+ } else {\r
+ send_websocket_handshake(conn);\r
+ if (conn->ctx->callbacks.websocket_ready != NULL) {\r
+ conn->ctx->callbacks.websocket_ready(conn);\r
+ } else {\r
+ mg_printf(conn, "\r\n");\r
+ }\r
+ read_websocket(conn);\r
+ }\r
+}\r
+\r
+static int is_websocket_request(const struct mg_connection *conn) {\r
+ const char *host, *upgrade, *connection, *version, *key;\r
+\r
+ host = mg_get_header(conn, "Host");\r
+ upgrade = mg_get_header(conn, "Upgrade");\r
+ connection = mg_get_header(conn, "Connection");\r
+ key = mg_get_header(conn, "Sec-WebSocket-Key");\r
+ version = mg_get_header(conn, "Sec-WebSocket-Version");\r
+\r
+ return host != NULL && upgrade != NULL && connection != NULL &&\r
+ key != NULL && version != NULL &&\r
+ mg_strcasestr(upgrade, "websocket") != NULL &&\r
+ mg_strcasestr(connection, "Upgrade") != NULL;\r
+}\r
+#endif // !USE_WEBSOCKET\r
+\r
+static int isbyte(int n) {\r
+ return n >= 0 && n <= 255;\r
+}\r
+\r
+static int parse_net(const char *spec, uint32_t *net, uint32_t *mask) {\r
+ int n, a, b, c, d, slash = 32, len = 0;\r
+\r
+ if ((sscanf(spec, "%d.%d.%d.%d/%d%n", &a, &b, &c, &d, &slash, &n) == 5 ||\r
+ sscanf(spec, "%d.%d.%d.%d%n", &a, &b, &c, &d, &n) == 4) &&\r
+ isbyte(a) && isbyte(b) && isbyte(c) && isbyte(d) &&\r
+ slash >= 0 && slash < 33) {\r
+ len = n;\r
+ *net = ((uint32_t)a << 24) | ((uint32_t)b << 16) | ((uint32_t)c << 8) | d;\r
+ *mask = slash ? 0xffffffffU << (32 - slash) : 0;\r
+ }\r
+\r
+ return len;\r
+}\r
+\r
+static int set_throttle(const char *spec, uint32_t remote_ip, const char *uri) {\r
+ int throttle = 0;\r
+ struct vec vec, val;\r
+ uint32_t net, mask;\r
+ char mult;\r
+ double v;\r
+\r
+ while ((spec = next_option(spec, &vec, &val)) != NULL) {\r
+ mult = ',';\r
+ if (sscanf(val.ptr, "%lf%c", &v, &mult) < 1 || v < 0 ||\r
+ (lowercase(&mult) != 'k' && lowercase(&mult) != 'm' && mult != ',')) {\r
+ continue;\r
+ }\r
+ v *= lowercase(&mult) == 'k' ? 1024 : lowercase(&mult) == 'm' ? 1048576 : 1;\r
+ if (vec.len == 1 && vec.ptr[0] == '*') {\r
+ throttle = (int) v;\r
+ } else if (parse_net(vec.ptr, &net, &mask) > 0) {\r
+ if ((remote_ip & mask) == net) {\r
+ throttle = (int) v;\r
+ }\r
+ } else if (match_prefix(vec.ptr, vec.len, uri) > 0) {\r
+ throttle = (int) v;\r
+ }\r
+ }\r
+\r
+ return throttle;\r
+}\r
+\r
+static uint32_t get_remote_ip(const struct mg_connection *conn) {\r
+ return ntohl(* (uint32_t *) &conn->client.rsa.sin.sin_addr);\r
+}\r
+\r
+#ifdef USE_LUA\r
+#include "mod_lua.c"\r
+#endif // USE_LUA\r
+\r
+int mg_upload(struct mg_connection *conn, const char *destination_dir) {\r
+ const char *content_type_header, *boundary_start;\r
+ char buf[MG_BUF_LEN], path[PATH_MAX], fname[1024], boundary[100], *s;\r
+ FILE *fp;\r
+ int bl, n, i, j, headers_len, boundary_len, eof,\r
+ len = 0, num_uploaded_files = 0;\r
+\r
+ // Request looks like this:\r
+ //\r
+ // POST /upload HTTP/1.1\r
+ // Host: 127.0.0.1:8080\r
+ // Content-Length: 244894\r
+ // Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryRVr\r
+ //\r
+ // ------WebKitFormBoundaryRVr\r
+ // Content-Disposition: form-data; name="file"; filename="accum.png"\r
+ // Content-Type: image/png\r
+ //\r
+ // <89>PNG\r
+ // <PNG DATA>\r
+ // ------WebKitFormBoundaryRVr\r
+\r
+ // Extract boundary string from the Content-Type header\r
+ if ((content_type_header = mg_get_header(conn, "Content-Type")) == NULL ||\r
+ (boundary_start = mg_strcasestr(content_type_header,\r
+ "boundary=")) == NULL ||\r
+ (sscanf(boundary_start, "boundary=\"%99[^\"]\"", boundary) == 0 &&\r
+ sscanf(boundary_start, "boundary=%99s", boundary) == 0) ||\r
+ boundary[0] == '\0') {\r
+ return num_uploaded_files;\r
+ }\r
+\r
+ boundary_len = strlen(boundary);\r
+ bl = boundary_len + 4; // \r\n--<boundary>\r
+ for (;;) {\r
+ // Pull in headers\r
+ assert(len >= 0 && len <= (int) sizeof(buf));\r
+ while ((n = mg_read(conn, buf + len, sizeof(buf) - len)) > 0) {\r
+ len += n;\r
+ }\r
+ if ((headers_len = get_request_len(buf, len)) <= 0) {\r
+ break;\r
+ }\r
+\r
+ // Fetch file name.\r
+ fname[0] = '\0';\r
+ for (i = j = 0; i < headers_len; i++) {\r
+ if (buf[i] == '\r' && buf[i + 1] == '\n') {\r
+ buf[i] = buf[i + 1] = '\0';\r
+ // TODO(lsm): don't expect filename to be the 3rd field,\r
+ // parse the header properly instead.\r
+ sscanf(&buf[j], "Content-Disposition: %*s %*s filename=\"%1023[^\"]",\r
+ fname);\r
+ j = i + 2;\r
+ }\r
+ }\r
+\r
+ // Give up if the headers are not what we expect\r
+ if (fname[0] == '\0') {\r
+ break;\r
+ }\r
+\r
+ // Move data to the beginning of the buffer\r
+ assert(len >= headers_len);\r
+ memmove(buf, &buf[headers_len], len - headers_len);\r
+ len -= headers_len;\r
+\r
+ // We open the file with exclusive lock held. This guarantee us\r
+ // there is no other thread can save into the same file simultaneously.\r
+ fp = NULL;\r
+ // Construct destination file name. Do not allow paths to have slashes.\r
+ if ((s = strrchr(fname, '/')) == NULL) {\r
+ s = fname;\r
+ }\r
+ // Open file in binary mode. TODO: set an exclusive lock.\r
+ snprintf(path, sizeof(path), "%s/%s", destination_dir, s);\r
+ if ((fp = fopen(path, "wb")) == NULL) {\r
+ break;\r
+ }\r
+\r
+ // Read POST data, write into file until boundary is found.\r
+ eof = n = 0;\r
+ do {\r
+ len += n;\r
+ for (i = 0; i < len - bl; i++) {\r
+ if (!memcmp(&buf[i], "\r\n--", 4) &&\r
+ !memcmp(&buf[i + 4], boundary, boundary_len)) {\r
+ // Found boundary, that's the end of file data.\r
+ fwrite(buf, 1, i, fp);\r
+ eof = 1;\r
+ memmove(buf, &buf[i + bl], len - (i + bl));\r
+ len -= i + bl;\r
+ break;\r
+ }\r
+ }\r
+ if (!eof && len > bl) {\r
+ fwrite(buf, 1, len - bl, fp);\r
+ memmove(buf, &buf[len - bl], bl);\r
+ len = bl;\r
+ }\r
+ } while (!eof && (n = mg_read(conn, buf + len, sizeof(buf) - len)) > 0);\r
+ fclose(fp);\r
+ if (eof) {\r
+ num_uploaded_files++;\r
+ if (conn->ctx->callbacks.upload != NULL) {\r
+ conn->ctx->callbacks.upload(conn, path);\r
+ }\r
+ }\r
+ }\r
+\r
+ return num_uploaded_files;\r
+}\r
+\r
+static int is_put_or_delete_request(const struct mg_connection *conn) {\r
+ const char *s = conn->request_info.request_method;\r
+ return s != NULL && (!strcmp(s, "PUT") || !strcmp(s, "DELETE"));\r
+}\r
+\r
+static int get_first_ssl_listener_index(const struct mg_context *ctx) {\r
+ int i, index = -1;\r
+ for (i = 0; index == -1 && i < ctx->num_listening_sockets; i++) {\r
+ index = ctx->listening_sockets[i].is_ssl ? i : -1;\r
+ }\r
+ return index;\r
+}\r
+\r
+static void redirect_to_https_port(struct mg_connection *conn, int ssl_index) {\r
+ char host[1025];\r
+ const char *host_header;\r
+\r
+ if ((host_header = mg_get_header(conn, "Host")) == NULL ||\r
+ sscanf(host_header, "%1024[^:]", host) == 0) {\r
+ // Cannot get host from the Host: header. Fallback to our IP address.\r
+ sockaddr_to_string(host, sizeof(host), &conn->client.lsa);\r
+ }\r
+\r
+ mg_printf(conn, "HTTP/1.1 302 Found\r\nLocation: https://%s:%d%s\r\n\r\n",\r
+ host, (int) ntohs(conn->ctx->listening_sockets[ssl_index].\r
+ lsa.sin.sin_port), conn->request_info.uri);\r
+}\r
+\r
+// This is the heart of the Mongoose's logic.\r
+// This function is called when the request is read, parsed and validated,\r
+// and Mongoose must decide what action to take: serve a file, or\r
+// a directory, or call embedded function, etcetera.\r
+static void handle_request(struct mg_connection *conn) {\r
+ struct mg_request_info *ri = &conn->request_info;\r
+ char path[PATH_MAX];\r
+ int uri_len, ssl_index;\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+\r
+ if ((conn->request_info.query_string = strchr(ri->uri, '?')) != NULL) {\r
+ * ((char *) conn->request_info.query_string++) = '\0';\r
+ }\r
+ uri_len = (int) strlen(ri->uri);\r
+ mg_url_decode(ri->uri, uri_len, (char *) ri->uri, uri_len + 1, 0);\r
+ remove_double_dots_and_double_slashes((char *) ri->uri);\r
+ convert_uri_to_file_name(conn, path, sizeof(path), &file);\r
+ conn->throttle = set_throttle(conn->ctx->config[THROTTLE],\r
+ get_remote_ip(conn), ri->uri);\r
+\r
+ DEBUG_TRACE(("%s", ri->uri));\r
+ // Perform redirect and auth checks before calling begin_request() handler.\r
+ // Otherwise, begin_request() would need to perform auth checks and redirects.\r
+ if (!conn->client.is_ssl && conn->client.ssl_redir &&\r
+ (ssl_index = get_first_ssl_listener_index(conn->ctx)) > -1) {\r
+ redirect_to_https_port(conn, ssl_index);\r
+ } else if (!is_put_or_delete_request(conn) &&\r
+ !check_authorization(conn, path)) {\r
+ send_authorization_request(conn);\r
+ } else if (conn->ctx->callbacks.begin_request != NULL &&\r
+ conn->ctx->callbacks.begin_request(conn)) {\r
+ // Do nothing, callback has served the request\r
+#if defined(USE_WEBSOCKET)\r
+ } else if (is_websocket_request(conn)) {\r
+ handle_websocket_request(conn);\r
+#endif\r
+ } else if (!strcmp(ri->request_method, "OPTIONS")) {\r
+ send_options(conn);\r
+ } else if (conn->ctx->config[DOCUMENT_ROOT] == NULL) {\r
+ send_http_error(conn, 404, "Not Found", "Not Found");\r
+ } else if (is_put_or_delete_request(conn) &&\r
+ (conn->ctx->config[PUT_DELETE_PASSWORDS_FILE] == NULL ||\r
+ is_authorized_for_put(conn) != 1)) {\r
+ send_authorization_request(conn);\r
+ } else if (!strcmp(ri->request_method, "PUT")) {\r
+ put_file(conn, path);\r
+ } else if (!strcmp(ri->request_method, "DELETE")) {\r
+ if (mg_remove(path) == 0) {\r
+ send_http_error(conn, 200, "OK", "%s", "");\r
+ } else {\r
+ send_http_error(conn, 500, http_500_error, "remove(%s): %s", path,\r
+ strerror(ERRNO));\r
+ }\r
+ } else if ((file.membuf == NULL && file.modification_time == (time_t) 0) ||\r
+ must_hide_file(conn, path)) {\r
+ send_http_error(conn, 404, "Not Found", "%s", "File not found");\r
+ } else if (file.is_directory && ri->uri[uri_len - 1] != '/') {\r
+ mg_printf(conn, "HTTP/1.1 301 Moved Permanently\r\n"\r
+ "Location: %s/\r\n\r\n", ri->uri);\r
+ } else if (!strcmp(ri->request_method, "PROPFIND")) {\r
+ handle_propfind(conn, path, &file);\r
+ } else if (file.is_directory &&\r
+ !substitute_index_file(conn, path, sizeof(path), &file)) {\r
+ if (!mg_strcasecmp(conn->ctx->config[ENABLE_DIRECTORY_LISTING], "yes")) {\r
+ handle_directory_request(conn, path);\r
+ } else {\r
+ send_http_error(conn, 403, "Directory Listing Denied",\r
+ "Directory listing denied");\r
+ }\r
+#ifdef USE_LUA\r
+ } else if (match_prefix("**.lp$", 6, path) > 0) {\r
+ handle_lsp_request(conn, path, &file, NULL);\r
+#endif\r
+#if !defined(NO_CGI)\r
+ } else if (match_prefix(conn->ctx->config[CGI_EXTENSIONS],\r
+ strlen(conn->ctx->config[CGI_EXTENSIONS]),\r
+ path) > 0) {\r
+ if (strcmp(ri->request_method, "POST") &&\r
+ strcmp(ri->request_method, "HEAD") &&\r
+ strcmp(ri->request_method, "GET")) {\r
+ send_http_error(conn, 501, "Not Implemented",\r
+ "Method %s is not implemented", ri->request_method);\r
+ } else {\r
+ handle_cgi_request(conn, path);\r
+ }\r
+#endif // !NO_CGI\r
+ } else if (match_prefix(conn->ctx->config[SSI_EXTENSIONS],\r
+ strlen(conn->ctx->config[SSI_EXTENSIONS]),\r
+ path) > 0) {\r
+ handle_ssi_file_request(conn, path);\r
+ } else if (is_not_modified(conn, &file)) {\r
+ send_http_error(conn, 304, "Not Modified", "%s", "");\r
+ } else {\r
+ handle_file_request(conn, path, &file);\r
+ }\r
+}\r
+\r
+static void close_all_listening_sockets(struct mg_context *ctx) {\r
+ int i;\r
+ for (i = 0; i < ctx->num_listening_sockets; i++) {\r
+ closesocket(ctx->listening_sockets[i].sock);\r
+ }\r
+ free(ctx->listening_sockets);\r
+}\r
+\r
+// Valid listening port specification is: [ip_address:]port[s]\r
+// Examples: 80, 443s, 127.0.0.1:3128, 1.2.3.4:8080s\r
+// TODO(lsm): add parsing of the IPv6 address\r
+static int parse_port_string(const struct vec *vec, struct socket *so) {\r
+ int a, b, c, d, port, len;\r
+\r
+ // MacOS needs that. If we do not zero it, subsequent bind() will fail.\r
+ // Also, all-zeroes in the socket address means binding to all addresses\r
+ // for both IPv4 and IPv6 (INADDR_ANY and IN6ADDR_ANY_INIT).\r
+ memset(so, 0, sizeof(*so));\r
+\r
+ if (sscanf(vec->ptr, "%d.%d.%d.%d:%d%n", &a, &b, &c, &d, &port, &len) == 5) {\r
+ // Bind to a specific IPv4 address\r
+ so->lsa.sin.sin_addr.s_addr = htonl((a << 24) | (b << 16) | (c << 8) | d);\r
+ } else if (sscanf(vec->ptr, "%d%n", &port, &len) != 1 ||\r
+ len <= 0 ||\r
+ len > (int) vec->len ||\r
+ (vec->ptr[len] && vec->ptr[len] != 's' &&\r
+ vec->ptr[len] != 'r' && vec->ptr[len] != ',')) {\r
+ return 0;\r
+ }\r
+\r
+ so->is_ssl = vec->ptr[len] == 's';\r
+ so->ssl_redir = vec->ptr[len] == 'r';\r
+#if defined(USE_IPV6)\r
+ so->lsa.sin6.sin6_family = AF_INET6;\r
+ so->lsa.sin6.sin6_port = htons((uint16_t) port);\r
+#else\r
+ so->lsa.sin.sin_family = AF_INET;\r
+ so->lsa.sin.sin_port = htons((uint16_t) port);\r
+#endif\r
+\r
+ return 1;\r
+}\r
+\r
+static int set_ports_option(struct mg_context *ctx) {\r
+ const char *list = ctx->config[LISTENING_PORTS];\r
+ int on = 1, success = 1;\r
+#if defined(USE_IPV6)\r
+ int off = 0;\r
+#endif\r
+ struct vec vec;\r
+ struct socket so, *ptr;\r
+\r
+ while (success && (list = next_option(list, &vec, NULL)) != NULL) {\r
+ if (!parse_port_string(&vec, &so)) {\r
+ cry(fc(ctx), "%s: %.*s: invalid port spec. Expecting list of: %s",\r
+ __func__, (int) vec.len, vec.ptr, "[IP_ADDRESS:]PORT[s|p]");\r
+ success = 0;\r
+ } else if (so.is_ssl && ctx->ssl_ctx == NULL) {\r
+ cry(fc(ctx), "Cannot add SSL socket, is -ssl_certificate option set?");\r
+ success = 0;\r
+ } else if ((so.sock = socket(so.lsa.sa.sa_family, SOCK_STREAM, 6)) ==\r
+ INVALID_SOCKET ||\r
+ // On Windows, SO_REUSEADDR is recommended only for\r
+ // broadcast UDP sockets\r
+ setsockopt(so.sock, SOL_SOCKET, SO_REUSEADDR,\r
+ (void *) &on, sizeof(on)) != 0 ||\r
+#if defined(USE_IPV6)\r
+ setsockopt(so.sock, IPPROTO_IPV6, IPV6_V6ONLY, (void *) &off,\r
+ sizeof(off)) != 0 ||\r
+#endif\r
+ bind(so.sock, &so.lsa.sa, sizeof(so.lsa)) != 0 ||\r
+ listen(so.sock, SOMAXCONN) != 0) {\r
+ cry(fc(ctx), "%s: cannot bind to %.*s: %s", __func__,\r
+ (int) vec.len, vec.ptr, strerror(ERRNO));\r
+ closesocket(so.sock);\r
+ success = 0;\r
+ } else if ((ptr = realloc(ctx->listening_sockets,\r
+ (ctx->num_listening_sockets + 1) *\r
+ sizeof(ctx->listening_sockets[0]))) == NULL) {\r
+ closesocket(so.sock);\r
+ success = 0;\r
+ } else {\r
+ set_close_on_exec(so.sock);\r
+ ctx->listening_sockets = ptr;\r
+ ctx->listening_sockets[ctx->num_listening_sockets] = so;\r
+ ctx->num_listening_sockets++;\r
+ }\r
+ }\r
+\r
+ if (!success) {\r
+ close_all_listening_sockets(ctx);\r
+ }\r
+\r
+ return success;\r
+}\r
+\r
+static void log_header(const struct mg_connection *conn, const char *header,\r
+ FILE *fp) {\r
+ const char *header_value;\r
+\r
+ if ((header_value = mg_get_header(conn, header)) == NULL) {\r
+ (void) fprintf(fp, "%s", " -");\r
+ } else {\r
+ (void) fprintf(fp, " \"%s\"", header_value);\r
+ }\r
+}\r
+\r
+static void log_access(const struct mg_connection *conn) {\r
+ const struct mg_request_info *ri;\r
+ FILE *fp;\r
+ char date[64], src_addr[20];\r
+\r
+ fp = conn->ctx->config[ACCESS_LOG_FILE] == NULL ? NULL :\r
+ fopen(conn->ctx->config[ACCESS_LOG_FILE], "a+");\r
+\r
+ if (fp == NULL)\r
+ return;\r
+\r
+ strftime(date, sizeof(date), "%d/%b/%Y:%H:%M:%S %z",\r
+ localtime(&conn->birth_time));\r
+\r
+ ri = &conn->request_info;\r
+ flockfile(fp);\r
+\r
+ sockaddr_to_string(src_addr, sizeof(src_addr), &conn->client.rsa);\r
+ fprintf(fp, "%s - %s [%s] \"%s %s HTTP/%s\" %d %" INT64_FMT,\r
+ src_addr, ri->remote_user == NULL ? "-" : ri->remote_user, date,\r
+ ri->request_method ? ri->request_method : "-",\r
+ ri->uri ? ri->uri : "-", ri->http_version,\r
+ conn->status_code, conn->num_bytes_sent);\r
+ log_header(conn, "Referer", fp);\r
+ log_header(conn, "User-Agent", fp);\r
+ fputc('\n', fp);\r
+ fflush(fp);\r
+\r
+ funlockfile(fp);\r
+ fclose(fp);\r
+}\r
+\r
+// Verify given socket address against the ACL.\r
+// Return -1 if ACL is malformed, 0 if address is disallowed, 1 if allowed.\r
+static int check_acl(struct mg_context *ctx, uint32_t remote_ip) {\r
+ int allowed, flag;\r
+ uint32_t net, mask;\r
+ struct vec vec;\r
+ const char *list = ctx->config[ACCESS_CONTROL_LIST];\r
+\r
+ // If any ACL is set, deny by default\r
+ allowed = list == NULL ? '+' : '-';\r
+\r
+ while ((list = next_option(list, &vec, NULL)) != NULL) {\r
+ flag = vec.ptr[0];\r
+ if ((flag != '+' && flag != '-') ||\r
+ parse_net(&vec.ptr[1], &net, &mask) == 0) {\r
+ cry(fc(ctx), "%s: subnet must be [+|-]x.x.x.x[/x]", __func__);\r
+ return -1;\r
+ }\r
+\r
+ if (net == (remote_ip & mask)) {\r
+ allowed = flag;\r
+ }\r
+ }\r
+\r
+ return allowed == '+';\r
+}\r
+\r
+#if !defined(_WIN32)\r
+static int set_uid_option(struct mg_context *ctx) {\r
+ struct passwd *pw;\r
+ const char *uid = ctx->config[RUN_AS_USER];\r
+ int success = 0;\r
+\r
+ if (uid == NULL) {\r
+ success = 1;\r
+ } else {\r
+ if ((pw = getpwnam(uid)) == NULL) {\r
+ cry(fc(ctx), "%s: unknown user [%s]", __func__, uid);\r
+ } else if (setgid(pw->pw_gid) == -1) {\r
+ cry(fc(ctx), "%s: setgid(%s): %s", __func__, uid, strerror(errno));\r
+ } else if (setuid(pw->pw_uid) == -1) {\r
+ cry(fc(ctx), "%s: setuid(%s): %s", __func__, uid, strerror(errno));\r
+ } else {\r
+ success = 1;\r
+ }\r
+ }\r
+\r
+ return success;\r
+}\r
+#endif // !_WIN32\r
+\r
+#if !defined(NO_SSL)\r
+static pthread_mutex_t *ssl_mutexes;\r
+\r
+static int sslize(struct mg_connection *conn, SSL_CTX *s, int (*func)(SSL *)) {\r
+ return (conn->ssl = SSL_new(s)) != NULL &&\r
+ SSL_set_fd(conn->ssl, conn->client.sock) == 1 &&\r
+ func(conn->ssl) == 1;\r
+}\r
+\r
+// Return OpenSSL error message\r
+static const char *ssl_error(void) {\r
+ unsigned long err;\r
+ err = ERR_get_error();\r
+ return err == 0 ? "" : ERR_error_string(err, NULL);\r
+}\r
+\r
+static void ssl_locking_callback(int mode, int mutex_num, const char *file,\r
+ int line) {\r
+ (void) line;\r
+ (void) file;\r
+\r
+ if (mode & 1) { // 1 is CRYPTO_LOCK\r
+ (void) pthread_mutex_lock(&ssl_mutexes[mutex_num]);\r
+ } else {\r
+ (void) pthread_mutex_unlock(&ssl_mutexes[mutex_num]);\r
+ }\r
+}\r
+\r
+static unsigned long ssl_id_callback(void) {\r
+ return (unsigned long) pthread_self();\r
+}\r
+\r
+#if !defined(NO_SSL_DL)\r
+static int load_dll(struct mg_context *ctx, const char *dll_name,\r
+ struct ssl_func *sw) {\r
+ union {void *p; void (*fp)(void);} u;\r
+ void *dll_handle;\r
+ struct ssl_func *fp;\r
+\r
+ if ((dll_handle = dlopen(dll_name, RTLD_LAZY)) == NULL) {\r
+ cry(fc(ctx), "%s: cannot load %s", __func__, dll_name);\r
+ return 0;\r
+ }\r
+\r
+ for (fp = sw; fp->name != NULL; fp++) {\r
+#ifdef _WIN32\r
+ // GetProcAddress() returns pointer to function\r
+ u.fp = (void (*)(void)) dlsym(dll_handle, fp->name);\r
+#else\r
+ // dlsym() on UNIX returns void *. ISO C forbids casts of data pointers to\r
+ // function pointers. We need to use a union to make a cast.\r
+ u.p = dlsym(dll_handle, fp->name);\r
+#endif // _WIN32\r
+ if (u.fp == NULL) {\r
+ cry(fc(ctx), "%s: %s: cannot find %s", __func__, dll_name, fp->name);\r
+ return 0;\r
+ } else {\r
+ fp->ptr = u.fp;\r
+ }\r
+ }\r
+\r
+ return 1;\r
+}\r
+#endif // NO_SSL_DL\r
+\r
+// Dynamically load SSL library. Set up ctx->ssl_ctx pointer.\r
+static int set_ssl_option(struct mg_context *ctx) {\r
+ int i, size;\r
+ const char *pem;\r
+\r
+ // If PEM file is not specified, skip SSL initialization.\r
+ if ((pem = ctx->config[SSL_CERTIFICATE]) == NULL) {\r
+ return 1;\r
+ }\r
+\r
+#if !defined(NO_SSL_DL)\r
+ if (!load_dll(ctx, SSL_LIB, ssl_sw) ||\r
+ !load_dll(ctx, CRYPTO_LIB, crypto_sw)) {\r
+ return 0;\r
+ }\r
+#endif // NO_SSL_DL\r
+\r
+ // Initialize SSL library\r
+ SSL_library_init();\r
+ SSL_load_error_strings();\r
+\r
+ if ((ctx->ssl_ctx = SSL_CTX_new(SSLv23_server_method())) == NULL) {\r
+ cry(fc(ctx), "SSL_CTX_new (server) error: %s", ssl_error());\r
+ return 0;\r
+ }\r
+\r
+ // If user callback returned non-NULL, that means that user callback has\r
+ // set up certificate itself. In this case, skip sertificate setting.\r
+ if ((ctx->callbacks.init_ssl == NULL ||\r
+ !ctx->callbacks.init_ssl(ctx->ssl_ctx, ctx->user_data)) &&\r
+ (SSL_CTX_use_certificate_file(ctx->ssl_ctx, pem, 1) == 0 ||\r
+ SSL_CTX_use_PrivateKey_file(ctx->ssl_ctx, pem, 1) == 0)) {\r
+ cry(fc(ctx), "%s: cannot open %s: %s", __func__, pem, ssl_error());\r
+ return 0;\r
+ }\r
+\r
+ if (pem != NULL) {\r
+ (void) SSL_CTX_use_certificate_chain_file(ctx->ssl_ctx, pem);\r
+ }\r
+\r
+ // Initialize locking callbacks, needed for thread safety.\r
+ // http://www.openssl.org/support/faq.html#PROG1\r
+ size = sizeof(pthread_mutex_t) * CRYPTO_num_locks();\r
+ if ((ssl_mutexes = (pthread_mutex_t *) malloc((size_t)size)) == NULL) {\r
+ cry(fc(ctx), "%s: cannot allocate mutexes: %s", __func__, ssl_error());\r
+ return 0;\r
+ }\r
+\r
+ for (i = 0; i < CRYPTO_num_locks(); i++) {\r
+ pthread_mutex_init(&ssl_mutexes[i], NULL);\r
+ }\r
+\r
+ CRYPTO_set_locking_callback(&ssl_locking_callback);\r
+ CRYPTO_set_id_callback(&ssl_id_callback);\r
+\r
+ return 1;\r
+}\r
+\r
+static void uninitialize_ssl(struct mg_context *ctx) {\r
+ int i;\r
+ if (ctx->ssl_ctx != NULL) {\r
+ CRYPTO_set_locking_callback(NULL);\r
+ for (i = 0; i < CRYPTO_num_locks(); i++) {\r
+ pthread_mutex_destroy(&ssl_mutexes[i]);\r
+ }\r
+ CRYPTO_set_locking_callback(NULL);\r
+ CRYPTO_set_id_callback(NULL);\r
+ }\r
+}\r
+#endif // !NO_SSL\r
+\r
+static int set_gpass_option(struct mg_context *ctx) {\r
+ struct file file = STRUCT_FILE_INITIALIZER;\r
+ const char *path = ctx->config[GLOBAL_PASSWORDS_FILE];\r
+ if (path != NULL && !mg_stat(fc(ctx), path, &file)) {\r
+ cry(fc(ctx), "Cannot open %s: %s", path, strerror(ERRNO));\r
+ return 0;\r
+ }\r
+ return 1;\r
+}\r
+\r
+static int set_acl_option(struct mg_context *ctx) {\r
+ return check_acl(ctx, (uint32_t) 0x7f000001UL) != -1;\r
+}\r
+\r
+static void reset_per_request_attributes(struct mg_connection *conn) {\r
+ conn->path_info = NULL;\r
+ conn->num_bytes_sent = conn->consumed_content = 0;\r
+ conn->status_code = -1;\r
+ conn->must_close = conn->request_len = conn->throttle = 0;\r
+}\r
+\r
+static void close_socket_gracefully(struct mg_connection *conn) {\r
+#if defined(_WIN32)\r
+ char buf[MG_BUF_LEN];\r
+ int n;\r
+#endif\r
+ struct linger linger;\r
+\r
+ // Set linger option to avoid socket hanging out after close. This prevent\r
+ // ephemeral port exhaust problem under high QPS.\r
+ linger.l_onoff = 1;\r
+ linger.l_linger = 1;\r
+ setsockopt(conn->client.sock, SOL_SOCKET, SO_LINGER,\r
+ (char *) &linger, sizeof(linger));\r
+\r
+ // Send FIN to the client\r
+ shutdown(conn->client.sock, SHUT_WR);\r
+ set_non_blocking_mode(conn->client.sock);\r
+\r
+#if defined(_WIN32)\r
+ // Read and discard pending incoming data. If we do not do that and close the\r
+ // socket, the data in the send buffer may be discarded. This\r
+ // behaviour is seen on Windows, when client keeps sending data\r
+ // when server decides to close the connection; then when client\r
+ // does recv() it gets no data back.\r
+ do {\r
+ n = pull(NULL, conn, buf, sizeof(buf));\r
+ } while (n > 0);\r
+#endif\r
+\r
+ // Now we know that our FIN is ACK-ed, safe to close\r
+ closesocket(conn->client.sock);\r
+}\r
+\r
+static void close_connection(struct mg_connection *conn) {\r
+ conn->must_close = 1;\r
+\r
+#ifndef NO_SSL\r
+ if (conn->ssl != NULL) {\r
+ // Run SSL_shutdown twice to ensure completly close SSL connection\r
+ SSL_shutdown(conn->ssl);\r
+ SSL_shutdown(conn->ssl);\r
+ SSL_free(conn->ssl);\r
+ conn->ssl = NULL;\r
+ }\r
+#endif\r
+ if (conn->client.sock != INVALID_SOCKET) {\r
+ close_socket_gracefully(conn);\r
+ conn->client.sock = INVALID_SOCKET;\r
+ }\r
+}\r
+\r
+void mg_close_connection(struct mg_connection *conn) {\r
+#ifndef NO_SSL\r
+ if (conn->client_ssl_ctx != NULL) {\r
+ SSL_CTX_free((SSL_CTX *) conn->client_ssl_ctx);\r
+ }\r
+#endif\r
+ close_connection(conn);\r
+ free(conn);\r
+}\r
+\r
+struct mg_connection *mg_connect(const char *host, int port, int use_ssl,\r
+ char *ebuf, size_t ebuf_len) {\r
+ static struct mg_context fake_ctx;\r
+ struct mg_connection *conn = NULL;\r
+ SOCKET sock;\r
+\r
+ if ((sock = conn2(host, port, use_ssl, ebuf, ebuf_len)) == INVALID_SOCKET) {\r
+ } else if ((conn = (struct mg_connection *)\r
+ calloc(1, sizeof(*conn) + MAX_REQUEST_SIZE)) == NULL) {\r
+ snprintf(ebuf, ebuf_len, "calloc(): %s", strerror(ERRNO));\r
+ closesocket(sock);\r
+#ifndef NO_SSL\r
+ } else if (use_ssl && (conn->client_ssl_ctx =\r
+ SSL_CTX_new(SSLv23_client_method())) == NULL) {\r
+ snprintf(ebuf, ebuf_len, "SSL_CTX_new error");\r
+ closesocket(sock);\r
+ free(conn);\r
+ conn = NULL;\r
+#endif // NO_SSL\r
+ } else {\r
+ socklen_t len;\r
+ conn->buf_size = MAX_REQUEST_SIZE;\r
+ conn->buf = (char *) (conn + 1);\r
+ conn->ctx = &fake_ctx;\r
+ conn->client.sock = sock;\r
+ getsockname(sock, &conn->client.rsa.sa, &len);\r
+ conn->client.is_ssl = use_ssl;\r
+#ifndef NO_SSL\r
+ if (use_ssl) {\r
+ // SSL_CTX_set_verify call is needed to switch off server certificate\r
+ // checking, which is off by default in OpenSSL and on in yaSSL.\r
+ SSL_CTX_set_verify(conn->client_ssl_ctx, 0, 0);\r
+ sslize(conn, conn->client_ssl_ctx, SSL_connect);\r
+ }\r
+#endif\r
+ }\r
+\r
+ return conn;\r
+}\r
+\r
+static int is_valid_uri(const char *uri) {\r
+ // Conform to http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1.2\r
+ // URI can be an asterisk (*) or should start with slash.\r
+ return uri[0] == '/' || (uri[0] == '*' && uri[1] == '\0');\r
+}\r
+\r
+static int getreq(struct mg_connection *conn, char *ebuf, size_t ebuf_len) {\r
+ const char *cl;\r
+\r
+ ebuf[0] = '\0';\r
+ reset_per_request_attributes(conn);\r
+ conn->request_len = read_request(NULL, conn, conn->buf, conn->buf_size,\r
+ &conn->data_len);\r
+ assert(conn->request_len < 0 || conn->data_len >= conn->request_len);\r
+\r
+ if (conn->request_len == 0 && conn->data_len == conn->buf_size) {\r
+ snprintf(ebuf, ebuf_len, "%s", "Request Too Large");\r
+ } else if (conn->request_len <= 0) {\r
+ snprintf(ebuf, ebuf_len, "%s", "Client closed connection");\r
+ } else if (parse_http_message(conn->buf, conn->buf_size,\r
+ &conn->request_info) <= 0) {\r
+ snprintf(ebuf, ebuf_len, "Bad request: [%.*s]", conn->data_len, conn->buf);\r
+ } else {\r
+ // Request is valid\r
+ if ((cl = get_header(&conn->request_info, "Content-Length")) != NULL) {\r
+ conn->content_len = strtoll(cl, NULL, 10);\r
+ } else if (!mg_strcasecmp(conn->request_info.request_method, "POST") ||\r
+ !mg_strcasecmp(conn->request_info.request_method, "PUT")) {\r
+ conn->content_len = -1;\r
+ } else {\r
+ conn->content_len = 0;\r
+ }\r
+ conn->birth_time = time(NULL);\r
+ }\r
+ return ebuf[0] == '\0';\r
+}\r
+\r
+struct mg_connection *mg_download(const char *host, int port, int use_ssl,\r
+ char *ebuf, size_t ebuf_len,\r
+ const char *fmt, ...) {\r
+ struct mg_connection *conn;\r
+ va_list ap;\r
+\r
+ va_start(ap, fmt);\r
+ ebuf[0] = '\0';\r
+ if ((conn = mg_connect(host, port, use_ssl, ebuf, ebuf_len)) == NULL) {\r
+ } else if (mg_vprintf(conn, fmt, ap) <= 0) {\r
+ snprintf(ebuf, ebuf_len, "%s", "Error sending request");\r
+ } else {\r
+ getreq(conn, ebuf, ebuf_len);\r
+ }\r
+ if (ebuf[0] != '\0' && conn != NULL) {\r
+ mg_close_connection(conn);\r
+ conn = NULL;\r
+ }\r
+\r
+ return conn;\r
+}\r
+\r
+static void process_new_connection(struct mg_connection *conn) {\r
+ struct mg_request_info *ri = &conn->request_info;\r
+ int keep_alive_enabled, keep_alive, discard_len;\r
+ char ebuf[100];\r
+\r
+ keep_alive_enabled = !strcmp(conn->ctx->config[ENABLE_KEEP_ALIVE], "yes");\r
+ keep_alive = 0;\r
+\r
+ // Important: on new connection, reset the receiving buffer. Credit goes\r
+ // to crule42.\r
+ conn->data_len = 0;\r
+ do {\r
+ if (!getreq(conn, ebuf, sizeof(ebuf))) {\r
+ send_http_error(conn, 500, "Server Error", "%s", ebuf);\r
+ conn->must_close = 1;\r
+ } else if (!is_valid_uri(conn->request_info.uri)) {\r
+ snprintf(ebuf, sizeof(ebuf), "Invalid URI: [%s]", ri->uri);\r
+ send_http_error(conn, 400, "Bad Request", "%s", ebuf);\r
+ } else if (strcmp(ri->http_version, "1.0") &&\r
+ strcmp(ri->http_version, "1.1")) {\r
+ snprintf(ebuf, sizeof(ebuf), "Bad HTTP version: [%s]", ri->http_version);\r
+ send_http_error(conn, 505, "Bad HTTP version", "%s", ebuf);\r
+ }\r
+\r
+ if (ebuf[0] == '\0') {\r
+ handle_request(conn);\r
+ if (conn->ctx->callbacks.end_request != NULL) {\r
+ conn->ctx->callbacks.end_request(conn, conn->status_code);\r
+ }\r
+ log_access(conn);\r
+ }\r
+ if (ri->remote_user != NULL) {\r
+ free((void *) ri->remote_user);\r
+ ri->remote_user = NULL; // when having connections with and without auth would cause double free and then crash\r
+ }\r
+\r
+ // NOTE(lsm): order is important here. should_keep_alive() call\r
+ // is using parsed request, which will be invalid after memmove's below.\r
+ // Therefore, memorize should_keep_alive() result now for later use\r
+ // in loop exit condition.\r
+ keep_alive = conn->ctx->stop_flag == 0 && keep_alive_enabled &&\r
+ conn->content_len >= 0 && should_keep_alive(conn);\r
+\r
+ // Discard all buffered data for this request\r
+ discard_len = conn->content_len >= 0 && conn->request_len > 0 &&\r
+ conn->request_len + conn->content_len < (int64_t) conn->data_len ?\r
+ (int) (conn->request_len + conn->content_len) : conn->data_len;\r
+ assert(discard_len >= 0);\r
+ memmove(conn->buf, conn->buf + discard_len, conn->data_len - discard_len);\r
+ conn->data_len -= discard_len;\r
+ assert(conn->data_len >= 0);\r
+ assert(conn->data_len <= conn->buf_size);\r
+ } while (keep_alive);\r
+}\r
+\r
+// Worker threads take accepted socket from the queue\r
+static int consume_socket(struct mg_context *ctx, struct socket *sp) {\r
+ (void) pthread_mutex_lock(&ctx->mutex);\r
+ DEBUG_TRACE(("going idle"));\r
+\r
+ // If the queue is empty, wait. We're idle at this point.\r
+ while (ctx->sq_head == ctx->sq_tail && ctx->stop_flag == 0) {\r
+ pthread_cond_wait(&ctx->sq_full, &ctx->mutex);\r
+ }\r
+\r
+ // If we're stopping, sq_head may be equal to sq_tail.\r
+ if (ctx->sq_head > ctx->sq_tail) {\r
+ // Copy socket from the queue and increment tail\r
+ *sp = ctx->queue[ctx->sq_tail % ARRAY_SIZE(ctx->queue)];\r
+ ctx->sq_tail++;\r
+ DEBUG_TRACE(("grabbed socket %d, going busy", sp->sock));\r
+\r
+ // Wrap pointers if needed\r
+ while (ctx->sq_tail > (int) ARRAY_SIZE(ctx->queue)) {\r
+ ctx->sq_tail -= ARRAY_SIZE(ctx->queue);\r
+ ctx->sq_head -= ARRAY_SIZE(ctx->queue);\r
+ }\r
+ }\r
+\r
+ (void) pthread_cond_signal(&ctx->sq_empty);\r
+ (void) pthread_mutex_unlock(&ctx->mutex);\r
+\r
+ return !ctx->stop_flag;\r
+}\r
+\r
+static void *worker_thread(void *thread_func_param) {\r
+ struct mg_context *ctx = thread_func_param;\r
+ struct mg_connection *conn;\r
+\r
+ conn = (struct mg_connection *) calloc(1, sizeof(*conn) + MAX_REQUEST_SIZE);\r
+ if (conn == NULL) {\r
+ cry(fc(ctx), "%s", "Cannot create new connection struct, OOM");\r
+ } else {\r
+ conn->buf_size = MAX_REQUEST_SIZE;\r
+ conn->buf = (char *) (conn + 1);\r
+ conn->ctx = ctx;\r
+ conn->request_info.user_data = ctx->user_data;\r
+\r
+ // Call consume_socket() even when ctx->stop_flag > 0, to let it signal\r
+ // sq_empty condvar to wake up the master waiting in produce_socket()\r
+ while (consume_socket(ctx, &conn->client)) {\r
+ conn->birth_time = time(NULL);\r
+\r
+ // Fill in IP, port info early so even if SSL setup below fails,\r
+ // error handler would have the corresponding info.\r
+ // Thanks to Johannes Winkelmann for the patch.\r
+ // TODO(lsm): Fix IPv6 case\r
+ conn->request_info.remote_port = ntohs(conn->client.rsa.sin.sin_port);\r
+ memcpy(&conn->request_info.remote_ip,\r
+ &conn->client.rsa.sin.sin_addr.s_addr, 4);\r
+ conn->request_info.remote_ip = ntohl(conn->request_info.remote_ip);\r
+ conn->request_info.is_ssl = conn->client.is_ssl;\r
+\r
+ if (!conn->client.is_ssl\r
+#ifndef NO_SSL\r
+ || sslize(conn, conn->ctx->ssl_ctx, SSL_accept)\r
+#endif\r
+ ) {\r
+ process_new_connection(conn);\r
+ }\r
+\r
+ close_connection(conn);\r
+ }\r
+ free(conn);\r
+ }\r
+\r
+ // Signal master that we're done with connection and exiting\r
+ (void) pthread_mutex_lock(&ctx->mutex);\r
+ ctx->num_threads--;\r
+ (void) pthread_cond_signal(&ctx->cond);\r
+ assert(ctx->num_threads >= 0);\r
+ (void) pthread_mutex_unlock(&ctx->mutex);\r
+\r
+ DEBUG_TRACE(("exiting"));\r
+ return NULL;\r
+}\r
+\r
+// Master thread adds accepted socket to a queue\r
+static void produce_socket(struct mg_context *ctx, const struct socket *sp) {\r
+ (void) pthread_mutex_lock(&ctx->mutex);\r
+\r
+ // If the queue is full, wait\r
+ while (ctx->stop_flag == 0 &&\r
+ ctx->sq_head - ctx->sq_tail >= (int) ARRAY_SIZE(ctx->queue)) {\r
+ (void) pthread_cond_wait(&ctx->sq_empty, &ctx->mutex);\r
+ }\r
+\r
+ if (ctx->sq_head - ctx->sq_tail < (int) ARRAY_SIZE(ctx->queue)) {\r
+ // Copy socket to the queue and increment head\r
+ ctx->queue[ctx->sq_head % ARRAY_SIZE(ctx->queue)] = *sp;\r
+ ctx->sq_head++;\r
+ DEBUG_TRACE(("queued socket %d", sp->sock));\r
+ }\r
+\r
+ (void) pthread_cond_signal(&ctx->sq_full);\r
+ (void) pthread_mutex_unlock(&ctx->mutex);\r
+}\r
+\r
+static int set_sock_timeout(SOCKET sock, int milliseconds) {\r
+#ifdef _WIN32\r
+ DWORD t = milliseconds;\r
+#else\r
+ struct timeval t;\r
+ t.tv_sec = milliseconds / 1000;\r
+ t.tv_usec = (milliseconds * 1000) % 1000000;\r
+#endif\r
+ return setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *) &t, sizeof(t)) ||\r
+ setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, (void *) &t, sizeof(t));\r
+}\r
+\r
+static void accept_new_connection(const struct socket *listener,\r
+ struct mg_context *ctx) {\r
+ struct socket so;\r
+ char src_addr[20];\r
+ socklen_t len = sizeof(so.rsa);\r
+ int on = 1;\r
+\r
+ if ((so.sock = accept(listener->sock, &so.rsa.sa, &len)) == INVALID_SOCKET) {\r
+ } else if (!check_acl(ctx, ntohl(* (uint32_t *) &so.rsa.sin.sin_addr))) {\r
+ sockaddr_to_string(src_addr, sizeof(src_addr), &so.rsa);\r
+ cry(fc(ctx), "%s: %s is not allowed to connect", __func__, src_addr);\r
+ closesocket(so.sock);\r
+ } else {\r
+ // Put so socket structure into the queue\r
+ DEBUG_TRACE(("Accepted socket %d", (int) so.sock));\r
+ so.is_ssl = listener->is_ssl;\r
+ so.ssl_redir = listener->ssl_redir;\r
+ getsockname(so.sock, &so.lsa.sa, &len);\r
+ // Set TCP keep-alive. This is needed because if HTTP-level keep-alive\r
+ // is enabled, and client resets the connection, server won't get\r
+ // TCP FIN or RST and will keep the connection open forever. With TCP\r
+ // keep-alive, next keep-alive handshake will figure out that the client\r
+ // is down and will close the server end.\r
+ // Thanks to Igor Klopov who suggested the patch.\r
+ setsockopt(so.sock, SOL_SOCKET, SO_KEEPALIVE, (void *) &on, sizeof(on));\r
+ set_sock_timeout(so.sock, atoi(ctx->config[REQUEST_TIMEOUT]));\r
+ produce_socket(ctx, &so);\r
+ }\r
+}\r
+\r
+static void *master_thread(void *thread_func_param) {\r
+ struct mg_context *ctx = thread_func_param;\r
+ struct pollfd *pfd;\r
+ int i;\r
+\r
+ // Increase priority of the master thread\r
+#if defined(_WIN32)\r
+ SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_ABOVE_NORMAL);\r
+#endif\r
+\r
+#if defined(ISSUE_317)\r
+ struct sched_param sched_param;\r
+ sched_param.sched_priority = sched_get_priority_max(SCHED_RR);\r
+ pthread_setschedparam(pthread_self(), SCHED_RR, &sched_param);\r
+#endif\r
+\r
+ pfd = calloc(ctx->num_listening_sockets, sizeof(pfd[0]));\r
+ while (pfd != NULL && ctx->stop_flag == 0) {\r
+ for (i = 0; i < ctx->num_listening_sockets; i++) {\r
+ pfd[i].fd = ctx->listening_sockets[i].sock;\r
+ pfd[i].events = POLLIN;\r
+ }\r
+\r
+ if (poll(pfd, ctx->num_listening_sockets, 200) > 0) {\r
+ for (i = 0; i < ctx->num_listening_sockets; i++) {\r
+ // NOTE(lsm): on QNX, poll() returns POLLRDNORM after the\r
+ // successfull poll, and POLLIN is defined as (POLLRDNORM | POLLRDBAND)\r
+ // Therefore, we're checking pfd[i].revents & POLLIN, not\r
+ // pfd[i].revents == POLLIN.\r
+ if (ctx->stop_flag == 0 && (pfd[i].revents & POLLIN)) {\r
+ accept_new_connection(&ctx->listening_sockets[i], ctx);\r
+ }\r
+ }\r
+ }\r
+ }\r
+ free(pfd);\r
+ DEBUG_TRACE(("stopping workers"));\r
+\r
+ // Stop signal received: somebody called mg_stop. Quit.\r
+ close_all_listening_sockets(ctx);\r
+\r
+ // Wakeup workers that are waiting for connections to handle.\r
+ pthread_cond_broadcast(&ctx->sq_full);\r
+\r
+ // Wait until all threads finish\r
+ (void) pthread_mutex_lock(&ctx->mutex);\r
+ while (ctx->num_threads > 0) {\r
+ (void) pthread_cond_wait(&ctx->cond, &ctx->mutex);\r
+ }\r
+ (void) pthread_mutex_unlock(&ctx->mutex);\r
+\r
+ // All threads exited, no sync is needed. Destroy mutex and condvars\r
+ (void) pthread_mutex_destroy(&ctx->mutex);\r
+ (void) pthread_cond_destroy(&ctx->cond);\r
+ (void) pthread_cond_destroy(&ctx->sq_empty);\r
+ (void) pthread_cond_destroy(&ctx->sq_full);\r
+\r
+#if !defined(NO_SSL)\r
+ uninitialize_ssl(ctx);\r
+#endif\r
+ DEBUG_TRACE(("exiting"));\r
+\r
+ // Signal mg_stop() that we're done.\r
+ // WARNING: This must be the very last thing this\r
+ // thread does, as ctx becomes invalid after this line.\r
+ ctx->stop_flag = 2;\r
+ return NULL;\r
+}\r
+\r
+static void free_context(struct mg_context *ctx) {\r
+ int i;\r
+\r
+ // Deallocate config parameters\r
+ for (i = 0; i < NUM_OPTIONS; i++) {\r
+ if (ctx->config[i] != NULL)\r
+ free(ctx->config[i]);\r
+ }\r
+\r
+#ifndef NO_SSL\r
+ // Deallocate SSL context\r
+ if (ctx->ssl_ctx != NULL) {\r
+ SSL_CTX_free(ctx->ssl_ctx);\r
+ }\r
+ if (ssl_mutexes != NULL) {\r
+ free(ssl_mutexes);\r
+ ssl_mutexes = NULL;\r
+ }\r
+#endif // !NO_SSL\r
+\r
+ // Deallocate context itself\r
+ free(ctx);\r
+}\r
+\r
+void mg_stop(struct mg_context *ctx) {\r
+ ctx->stop_flag = 1;\r
+\r
+ // Wait until mg_fini() stops\r
+ while (ctx->stop_flag != 2) {\r
+ (void) mg_sleep(10);\r
+ }\r
+ free_context(ctx);\r
+\r
+#if defined(_WIN32) && !defined(__SYMBIAN32__)\r
+ (void) WSACleanup();\r
+#endif // _WIN32\r
+}\r
+\r
+struct mg_context *mg_start(const struct mg_callbacks *callbacks,\r
+ void *user_data,\r
+ const char **options) {\r
+ struct mg_context *ctx;\r
+ const char *name, *value, *default_value;\r
+ int i;\r
+\r
+#if defined(_WIN32) && !defined(__SYMBIAN32__)\r
+ WSADATA data;\r
+ WSAStartup(MAKEWORD(2,2), &data);\r
+ InitializeCriticalSection(&global_log_file_lock);\r
+#endif // _WIN32\r
+\r
+ // Allocate context and initialize reasonable general case defaults.\r
+ // TODO(lsm): do proper error handling here.\r
+ if ((ctx = (struct mg_context *) calloc(1, sizeof(*ctx))) == NULL) {\r
+ return NULL;\r
+ }\r
+ ctx->callbacks = *callbacks;\r
+ ctx->user_data = user_data;\r
+\r
+ while (options && (name = *options++) != NULL) {\r
+ if ((i = get_option_index(name)) == -1) {\r
+ cry(fc(ctx), "Invalid option: %s", name);\r
+ free_context(ctx);\r
+ return NULL;\r
+ } else if ((value = *options++) == NULL) {\r
+ cry(fc(ctx), "%s: option value cannot be NULL", name);\r
+ free_context(ctx);\r
+ return NULL;\r
+ }\r
+ if (ctx->config[i] != NULL) {\r
+ cry(fc(ctx), "warning: %s: duplicate option", name);\r
+ free(ctx->config[i]);\r
+ }\r
+ ctx->config[i] = mg_strdup(value);\r
+ DEBUG_TRACE(("[%s] -> [%s]", name, value));\r
+ }\r
+\r
+ // Set default value if needed\r
+ for (i = 0; config_options[i * 2] != NULL; i++) {\r
+ default_value = config_options[i * 2 + 1];\r
+ if (ctx->config[i] == NULL && default_value != NULL) {\r
+ ctx->config[i] = mg_strdup(default_value);\r
+ }\r
+ }\r
+\r
+ // NOTE(lsm): order is important here. SSL certificates must\r
+ // be initialized before listening ports. UID must be set last.\r
+ if (!set_gpass_option(ctx) ||\r
+#if !defined(NO_SSL)\r
+ !set_ssl_option(ctx) ||\r
+#endif\r
+ !set_ports_option(ctx) ||\r
+#if !defined(_WIN32)\r
+ !set_uid_option(ctx) ||\r
+#endif\r
+ !set_acl_option(ctx)) {\r
+ free_context(ctx);\r
+ return NULL;\r
+ }\r
+\r
+#if !defined(_WIN32) && !defined(__SYMBIAN32__)\r
+ // Ignore SIGPIPE signal, so if browser cancels the request, it\r
+ // won't kill the whole process.\r
+ (void) signal(SIGPIPE, SIG_IGN);\r
+ // Also ignoring SIGCHLD to let the OS to reap zombies properly.\r
+ (void) signal(SIGCHLD, SIG_IGN);\r
+#endif // !_WIN32\r
+\r
+ (void) pthread_mutex_init(&ctx->mutex, NULL);\r
+ (void) pthread_cond_init(&ctx->cond, NULL);\r
+ (void) pthread_cond_init(&ctx->sq_empty, NULL);\r
+ (void) pthread_cond_init(&ctx->sq_full, NULL);\r
+\r
+ // Start master (listening) thread\r
+ mg_start_thread(master_thread, ctx);\r
+\r
+ // Start worker threads\r
+ for (i = 0; i < atoi(ctx->config[NUM_THREADS]); i++) {\r
+ if (mg_start_thread(worker_thread, ctx) != 0) {\r
+ cry(fc(ctx), "Cannot start worker thread: %ld", (long) ERRNO);\r
+ } else {\r
+ ctx->num_threads++;\r
+ }\r
+ }\r
+\r
+ return ctx;\r
+}\r
projects / test / tools / tinyweb.git / commitdiff