+#include "git-compat-util.h"
#include "http.h"
+#include "config.h"
#include "pack.h"
#include "sideband.h"
#include "run-command.h"
#include "url.h"
+#include "urlmatch.h"
#include "credential.h"
#include "version.h"
-
+#include "pkt-line.h"
+#include "gettext.h"
+#include "transport.h"
+#include "packfile.h"
+#include "protocol.h"
+#include "string-list.h"
+
+static struct trace_key trace_curl = TRACE_KEY_INIT(CURL);
+static int trace_curl_data = 1;
+static struct string_list cookies_to_redact = STRING_LIST_INIT_DUP;
+#if LIBCURL_VERSION_NUM >= 0x070a08
+long int git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
+#else
+long int git_curl_ipresolve;
+#endif
int active_requests;
int http_is_verbose;
-size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
+ssize_t http_post_buffer = 16 * LARGE_PACKET_MAX;
#if LIBCURL_VERSION_NUM >= 0x070a06
#define LIBCURL_CAN_HANDLE_AUTH_ANY
#endif
#define PREV_BUF_SIZE 4096
-#define RANGE_HEADER_SIZE 30
char curl_errorstr[CURL_ERROR_SIZE];
static int curl_ssl_verify = -1;
+static int curl_ssl_try;
static const char *ssl_cert;
+static const char *ssl_cipherlist;
+static const char *ssl_version;
+static struct {
+ const char *name;
+ long ssl_version;
+} sslversions[] = {
+ { "sslv2", CURL_SSLVERSION_SSLv2 },
+ { "sslv3", CURL_SSLVERSION_SSLv3 },
+ { "tlsv1", CURL_SSLVERSION_TLSv1 },
+#if LIBCURL_VERSION_NUM >= 0x072200
+ { "tlsv1.0", CURL_SSLVERSION_TLSv1_0 },
+ { "tlsv1.1", CURL_SSLVERSION_TLSv1_1 },
+ { "tlsv1.2", CURL_SSLVERSION_TLSv1_2 },
+#endif
+};
#if LIBCURL_VERSION_NUM >= 0x070903
static const char *ssl_key;
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
static const char *ssl_capath;
#endif
+#if LIBCURL_VERSION_NUM >= 0x071304
+static const char *curl_no_proxy;
+#endif
+#if LIBCURL_VERSION_NUM >= 0x072c00
+static const char *ssl_pinnedkey;
+#endif
static const char *ssl_cainfo;
static long curl_low_speed_limit = -1;
static long curl_low_speed_time = -1;
static int curl_ftp_no_epsv;
static const char *curl_http_proxy;
+static const char *http_proxy_authmethod;
+static struct {
+ const char *name;
+ long curlauth_param;
+} proxy_authmethods[] = {
+ { "basic", CURLAUTH_BASIC },
+ { "digest", CURLAUTH_DIGEST },
+ { "negotiate", CURLAUTH_GSSNEGOTIATE },
+ { "ntlm", CURLAUTH_NTLM },
+#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
+ { "anyauth", CURLAUTH_ANY },
+#endif
+ /*
+ * CURLAUTH_DIGEST_IE has no corresponding command-line option in
+ * curl(1) and is not included in CURLAUTH_ANY, so we leave it out
+ * here, too
+ */
+};
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+static const char *curl_deleg;
+static struct {
+ const char *name;
+ long curl_deleg_param;
+} curl_deleg_levels[] = {
+ { "none", CURLGSSAPI_DELEGATION_NONE },
+ { "policy", CURLGSSAPI_DELEGATION_POLICY_FLAG },
+ { "always", CURLGSSAPI_DELEGATION_FLAG },
+};
+#endif
+
+static struct credential proxy_auth = CREDENTIAL_INIT;
+static const char *curl_proxyuserpwd;
static const char *curl_cookie_file;
-static struct credential http_auth = CREDENTIAL_INIT;
+static int curl_save_cookies;
+struct credential http_auth = CREDENTIAL_INIT;
static int http_proactive_auth;
static const char *user_agent;
+static int curl_empty_auth = -1;
+
+enum http_follow_config http_follow_config = HTTP_FOLLOW_INITIAL;
#if LIBCURL_VERSION_NUM >= 0x071700
/* Use CURLOPT_KEYPASSWD as is */
static struct credential cert_auth = CREDENTIAL_INIT;
static int ssl_cert_password_required;
+#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
+static unsigned long http_auth_methods = CURLAUTH_ANY;
+static int http_auth_methods_restricted;
+/* Modes for which empty_auth cannot actually help us. */
+static unsigned long empty_auth_useless =
+ CURLAUTH_BASIC
+#ifdef CURLAUTH_DIGEST_IE
+ | CURLAUTH_DIGEST_IE
+#endif
+ | CURLAUTH_DIGEST;
+#endif
static struct curl_slist *pragma_header;
static struct curl_slist *no_pragma_header;
+static struct curl_slist *extra_http_headers;
static struct active_request_slot *active_queue_head;
+static char *cached_accept_language;
+
size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_)
{
size_t size = eltsize * nmemb;
return eltsize * nmemb;
}
+static void closedown_active_slot(struct active_request_slot *slot)
+{
+ active_requests--;
+ slot->in_use = 0;
+}
+
+static void finish_active_slot(struct active_request_slot *slot)
+{
+ closedown_active_slot(slot);
+ curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
+
+ if (slot->finished != NULL)
+ (*slot->finished) = 1;
+
+ /* Store slot results so they can be read after the slot is reused */
+ if (slot->results != NULL) {
+ slot->results->curl_result = slot->curl_result;
+ slot->results->http_code = slot->http_code;
+#if LIBCURL_VERSION_NUM >= 0x070a08
+ curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL,
+ &slot->results->auth_avail);
+#else
+ slot->results->auth_avail = 0;
+#endif
+
+ curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CONNECTCODE,
+ &slot->results->http_connectcode);
+ }
+
+ /* Run callback if appropriate */
+ if (slot->callback_func != NULL)
+ slot->callback_func(slot->callback_data);
+}
+
+static void xmulti_remove_handle(struct active_request_slot *slot)
+{
+#ifdef USE_CURL_MULTI
+ curl_multi_remove_handle(curlm, slot->curl);
+#endif
+}
+
#ifdef USE_CURL_MULTI
static void process_curl_messages(void)
{
slot->curl != curl_message->easy_handle)
slot = slot->next;
if (slot != NULL) {
- curl_multi_remove_handle(curlm, slot->curl);
+ xmulti_remove_handle(slot);
slot->curl_result = curl_result;
finish_active_slot(slot);
} else {
curl_ssl_verify = git_config_bool(var, value);
return 0;
}
+ if (!strcmp("http.sslcipherlist", var))
+ return git_config_string(&ssl_cipherlist, var, value);
+ if (!strcmp("http.sslversion", var))
+ return git_config_string(&ssl_version, var, value);
if (!strcmp("http.sslcert", var))
- return git_config_string(&ssl_cert, var, value);
+ return git_config_pathname(&ssl_cert, var, value);
#if LIBCURL_VERSION_NUM >= 0x070903
if (!strcmp("http.sslkey", var))
- return git_config_string(&ssl_key, var, value);
+ return git_config_pathname(&ssl_key, var, value);
#endif
#if LIBCURL_VERSION_NUM >= 0x070908
if (!strcmp("http.sslcapath", var))
- return git_config_string(&ssl_capath, var, value);
+ return git_config_pathname(&ssl_capath, var, value);
#endif
if (!strcmp("http.sslcainfo", var))
- return git_config_string(&ssl_cainfo, var, value);
+ return git_config_pathname(&ssl_cainfo, var, value);
if (!strcmp("http.sslcertpasswordprotected", var)) {
- if (git_config_bool(var, value))
- ssl_cert_password_required = 1;
+ ssl_cert_password_required = git_config_bool(var, value);
+ return 0;
+ }
+ if (!strcmp("http.ssltry", var)) {
+ curl_ssl_try = git_config_bool(var, value);
return 0;
}
if (!strcmp("http.minsessions", var)) {
if (!strcmp("http.proxy", var))
return git_config_string(&curl_http_proxy, var, value);
+ if (!strcmp("http.proxyauthmethod", var))
+ return git_config_string(&http_proxy_authmethod, var, value);
+
if (!strcmp("http.cookiefile", var))
- return git_config_string(&curl_cookie_file, var, value);
+ return git_config_pathname(&curl_cookie_file, var, value);
+ if (!strcmp("http.savecookies", var)) {
+ curl_save_cookies = git_config_bool(var, value);
+ return 0;
+ }
if (!strcmp("http.postbuffer", var)) {
- http_post_buffer = git_config_int(var, value);
+ http_post_buffer = git_config_ssize_t(var, value);
+ if (http_post_buffer < 0)
+ warning(_("negative value for http.postbuffer; defaulting to %d"), LARGE_PACKET_MAX);
if (http_post_buffer < LARGE_PACKET_MAX)
http_post_buffer = LARGE_PACKET_MAX;
return 0;
if (!strcmp("http.useragent", var))
return git_config_string(&user_agent, var, value);
+ if (!strcmp("http.emptyauth", var)) {
+ if (value && !strcmp("auto", value))
+ curl_empty_auth = -1;
+ else
+ curl_empty_auth = git_config_bool(var, value);
+ return 0;
+ }
+
+ if (!strcmp("http.delegation", var)) {
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+ return git_config_string(&curl_deleg, var, value);
+#else
+ warning(_("Delegation control is not supported with cURL < 7.22.0"));
+ return 0;
+#endif
+ }
+
+ if (!strcmp("http.pinnedpubkey", var)) {
+#if LIBCURL_VERSION_NUM >= 0x072c00
+ return git_config_pathname(&ssl_pinnedkey, var, value);
+#else
+ warning(_("Public key pinning not supported with cURL < 7.44.0"));
+ return 0;
+#endif
+ }
+
+ if (!strcmp("http.extraheader", var)) {
+ if (!value) {
+ return config_error_nonbool(var);
+ } else if (!*value) {
+ curl_slist_free_all(extra_http_headers);
+ extra_http_headers = NULL;
+ } else {
+ extra_http_headers =
+ curl_slist_append(extra_http_headers, value);
+ }
+ return 0;
+ }
+
+ if (!strcmp("http.followredirects", var)) {
+ if (value && !strcmp(value, "initial"))
+ http_follow_config = HTTP_FOLLOW_INITIAL;
+ else if (git_config_bool(var, value))
+ http_follow_config = HTTP_FOLLOW_ALWAYS;
+ else
+ http_follow_config = HTTP_FOLLOW_NONE;
+ return 0;
+ }
+
/* Fall back on the default ones */
return git_default_config(var, value, cb);
}
+static int curl_empty_auth_enabled(void)
+{
+ if (curl_empty_auth >= 0)
+ return curl_empty_auth;
+
+#ifndef LIBCURL_CAN_HANDLE_AUTH_ANY
+ /*
+ * Our libcurl is too old to do AUTH_ANY in the first place;
+ * just default to turning the feature off.
+ */
+#else
+ /*
+ * In the automatic case, kick in the empty-auth
+ * hack as long as we would potentially try some
+ * method more exotic than "Basic" or "Digest".
+ *
+ * But only do this when this is our second or
+ * subsequent request, as by then we know what
+ * methods are available.
+ */
+ if (http_auth_methods_restricted &&
+ (http_auth_methods & ~empty_auth_useless))
+ return 1;
+#endif
+ return 0;
+}
+
static void init_curl_http_auth(CURL *result)
{
- if (!http_auth.username)
+ if (!http_auth.username || !*http_auth.username) {
+ if (curl_empty_auth_enabled())
+ curl_easy_setopt(result, CURLOPT_USERPWD, ":");
return;
+ }
credential_fill(&http_auth);
#else
{
static struct strbuf up = STRBUF_INIT;
- strbuf_reset(&up);
- strbuf_addf(&up, "%s:%s",
- http_auth.username, http_auth.password);
+ /*
+ * Note that we assume we only ever have a single set of
+ * credentials in a given program run, so we do not have
+ * to worry about updating this buffer, only setting its
+ * initial value.
+ */
+ if (!up.len)
+ strbuf_addf(&up, "%s:%s",
+ http_auth.username, http_auth.password);
curl_easy_setopt(result, CURLOPT_USERPWD, up.buf);
}
#endif
}
+/* *var must be free-able */
+static void var_override(const char **var, char *value)
+{
+ if (value) {
+ free((void *)*var);
+ *var = xstrdup(value);
+ }
+}
+
+static void set_proxyauth_name_password(CURL *result)
+{
+#if LIBCURL_VERSION_NUM >= 0x071301
+ curl_easy_setopt(result, CURLOPT_PROXYUSERNAME,
+ proxy_auth.username);
+ curl_easy_setopt(result, CURLOPT_PROXYPASSWORD,
+ proxy_auth.password);
+#else
+ struct strbuf s = STRBUF_INIT;
+
+ strbuf_addstr_urlencode(&s, proxy_auth.username, 1);
+ strbuf_addch(&s, ':');
+ strbuf_addstr_urlencode(&s, proxy_auth.password, 1);
+ curl_proxyuserpwd = strbuf_detach(&s, NULL);
+ curl_easy_setopt(result, CURLOPT_PROXYUSERPWD, curl_proxyuserpwd);
+#endif
+}
+
+static void init_curl_proxy_auth(CURL *result)
+{
+ if (proxy_auth.username) {
+ if (!proxy_auth.password)
+ credential_fill(&proxy_auth);
+ set_proxyauth_name_password(result);
+ }
+
+ var_override(&http_proxy_authmethod, getenv("GIT_HTTP_PROXY_AUTHMETHOD"));
+
+#if LIBCURL_VERSION_NUM >= 0x070a07 /* CURLOPT_PROXYAUTH and CURLAUTH_ANY */
+ if (http_proxy_authmethod) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(proxy_authmethods); i++) {
+ if (!strcmp(http_proxy_authmethod, proxy_authmethods[i].name)) {
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH,
+ proxy_authmethods[i].curlauth_param);
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(proxy_authmethods)) {
+ warning("unsupported proxy authentication method %s: using anyauth",
+ http_proxy_authmethod);
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+ }
+ }
+ else
+ curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+#endif
+}
+
static int has_cert_password(void)
{
if (ssl_cert == NULL || ssl_cert_password_required != 1)
return 1;
}
+#if LIBCURL_VERSION_NUM >= 0x071900
+static void set_curl_keepalive(CURL *c)
+{
+ curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1);
+}
+
+#elif LIBCURL_VERSION_NUM >= 0x071000
+static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type)
+{
+ int ka = 1;
+ int rc;
+ socklen_t len = (socklen_t)sizeof(ka);
+
+ if (type != CURLSOCKTYPE_IPCXN)
+ return 0;
+
+ rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);
+ if (rc < 0)
+ warning_errno("unable to set SO_KEEPALIVE on socket");
+
+ return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */
+}
+
+static void set_curl_keepalive(CURL *c)
+{
+ curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback);
+}
+
+#else
+static void set_curl_keepalive(CURL *c)
+{
+ /* not supported on older curl versions */
+}
+#endif
+
+static void redact_sensitive_header(struct strbuf *header)
+{
+ const char *sensitive_header;
+
+ if (skip_prefix(header->buf, "Authorization:", &sensitive_header) ||
+ skip_prefix(header->buf, "Proxy-Authorization:", &sensitive_header)) {
+ /* The first token is the type, which is OK to log */
+ while (isspace(*sensitive_header))
+ sensitive_header++;
+ while (*sensitive_header && !isspace(*sensitive_header))
+ sensitive_header++;
+ /* Everything else is opaque and possibly sensitive */
+ strbuf_setlen(header, sensitive_header - header->buf);
+ strbuf_addstr(header, " <redacted>");
+ } else if (cookies_to_redact.nr &&
+ skip_prefix(header->buf, "Cookie:", &sensitive_header)) {
+ struct strbuf redacted_header = STRBUF_INIT;
+ char *cookie;
+
+ while (isspace(*sensitive_header))
+ sensitive_header++;
+
+ /*
+ * The contents of header starting from sensitive_header will
+ * subsequently be overridden, so it is fine to mutate this
+ * string (hence the assignment to "char *").
+ */
+ cookie = (char *) sensitive_header;
+
+ while (cookie) {
+ char *equals;
+ char *semicolon = strstr(cookie, "; ");
+ if (semicolon)
+ *semicolon = 0;
+ equals = strchrnul(cookie, '=');
+ if (!equals) {
+ /* invalid cookie, just append and continue */
+ strbuf_addstr(&redacted_header, cookie);
+ continue;
+ }
+ *equals = 0; /* temporarily set to NUL for lookup */
+ if (string_list_lookup(&cookies_to_redact, cookie)) {
+ strbuf_addstr(&redacted_header, cookie);
+ strbuf_addstr(&redacted_header, "=<redacted>");
+ } else {
+ *equals = '=';
+ strbuf_addstr(&redacted_header, cookie);
+ }
+ if (semicolon) {
+ /*
+ * There are more cookies. (Or, for some
+ * reason, the input string ends in "; ".)
+ */
+ strbuf_addstr(&redacted_header, "; ");
+ cookie = semicolon + strlen("; ");
+ } else {
+ cookie = NULL;
+ }
+ }
+
+ strbuf_setlen(header, sensitive_header - header->buf);
+ strbuf_addbuf(header, &redacted_header);
+ }
+}
+
+static void curl_dump_header(const char *text, unsigned char *ptr, size_t size, int hide_sensitive_header)
+{
+ struct strbuf out = STRBUF_INIT;
+ struct strbuf **headers, **header;
+
+ strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
+ text, (long)size, (long)size);
+ trace_strbuf(&trace_curl, &out);
+ strbuf_reset(&out);
+ strbuf_add(&out, ptr, size);
+ headers = strbuf_split_max(&out, '\n', 0);
+
+ for (header = headers; *header; header++) {
+ if (hide_sensitive_header)
+ redact_sensitive_header(*header);
+ strbuf_insert((*header), 0, text, strlen(text));
+ strbuf_insert((*header), strlen(text), ": ", 2);
+ strbuf_rtrim((*header));
+ strbuf_addch((*header), '\n');
+ trace_strbuf(&trace_curl, (*header));
+ }
+ strbuf_list_free(headers);
+ strbuf_release(&out);
+}
+
+static void curl_dump_data(const char *text, unsigned char *ptr, size_t size)
+{
+ size_t i;
+ struct strbuf out = STRBUF_INIT;
+ unsigned int width = 60;
+
+ strbuf_addf(&out, "%s, %10.10ld bytes (0x%8.8lx)\n",
+ text, (long)size, (long)size);
+ trace_strbuf(&trace_curl, &out);
+
+ for (i = 0; i < size; i += width) {
+ size_t w;
+
+ strbuf_reset(&out);
+ strbuf_addf(&out, "%s: ", text);
+ for (w = 0; (w < width) && (i + w < size); w++) {
+ unsigned char ch = ptr[i + w];
+
+ strbuf_addch(&out,
+ (ch >= 0x20) && (ch < 0x80)
+ ? ch : '.');
+ }
+ strbuf_addch(&out, '\n');
+ trace_strbuf(&trace_curl, &out);
+ }
+ strbuf_release(&out);
+}
+
+static int curl_trace(CURL *handle, curl_infotype type, char *data, size_t size, void *userp)
+{
+ const char *text;
+ enum { NO_FILTER = 0, DO_FILTER = 1 };
+
+ switch (type) {
+ case CURLINFO_TEXT:
+ trace_printf_key(&trace_curl, "== Info: %s", data);
+ break;
+ case CURLINFO_HEADER_OUT:
+ text = "=> Send header";
+ curl_dump_header(text, (unsigned char *)data, size, DO_FILTER);
+ break;
+ case CURLINFO_DATA_OUT:
+ if (trace_curl_data) {
+ text = "=> Send data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+ case CURLINFO_SSL_DATA_OUT:
+ if (trace_curl_data) {
+ text = "=> Send SSL data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+ case CURLINFO_HEADER_IN:
+ text = "<= Recv header";
+ curl_dump_header(text, (unsigned char *)data, size, NO_FILTER);
+ break;
+ case CURLINFO_DATA_IN:
+ if (trace_curl_data) {
+ text = "<= Recv data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+ case CURLINFO_SSL_DATA_IN:
+ if (trace_curl_data) {
+ text = "<= Recv SSL data";
+ curl_dump_data(text, (unsigned char *)data, size);
+ }
+ break;
+
+ default: /* we ignore unknown types by default */
+ return 0;
+ }
+ return 0;
+}
+
+void setup_curl_trace(CURL *handle)
+{
+ if (!trace_want(&trace_curl))
+ return;
+ curl_easy_setopt(handle, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(handle, CURLOPT_DEBUGFUNCTION, curl_trace);
+ curl_easy_setopt(handle, CURLOPT_DEBUGDATA, NULL);
+}
+
+#ifdef CURLPROTO_HTTP
+static long get_curl_allowed_protocols(int from_user)
+{
+ long allowed_protocols = 0;
+
+ if (is_transport_allowed("http", from_user))
+ allowed_protocols |= CURLPROTO_HTTP;
+ if (is_transport_allowed("https", from_user))
+ allowed_protocols |= CURLPROTO_HTTPS;
+ if (is_transport_allowed("ftp", from_user))
+ allowed_protocols |= CURLPROTO_FTP;
+ if (is_transport_allowed("ftps", from_user))
+ allowed_protocols |= CURLPROTO_FTPS;
+
+ return allowed_protocols;
+}
+#endif
+
static CURL *get_curl_handle(void)
{
CURL *result = curl_easy_init();
+ if (!result)
+ die("curl_easy_init failed");
+
if (!curl_ssl_verify) {
curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
#endif
+#ifdef CURLGSSAPI_DELEGATION_FLAG
+ if (curl_deleg) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(curl_deleg_levels); i++) {
+ if (!strcmp(curl_deleg, curl_deleg_levels[i].name)) {
+ curl_easy_setopt(result, CURLOPT_GSSAPI_DELEGATION,
+ curl_deleg_levels[i].curl_deleg_param);
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(curl_deleg_levels))
+ warning("Unknown delegation method '%s': using default",
+ curl_deleg);
+ }
+#endif
+
if (http_proactive_auth)
init_curl_http_auth(result);
+ if (getenv("GIT_SSL_VERSION"))
+ ssl_version = getenv("GIT_SSL_VERSION");
+ if (ssl_version && *ssl_version) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(sslversions); i++) {
+ if (!strcmp(ssl_version, sslversions[i].name)) {
+ curl_easy_setopt(result, CURLOPT_SSLVERSION,
+ sslversions[i].ssl_version);
+ break;
+ }
+ }
+ if (i == ARRAY_SIZE(sslversions))
+ warning("unsupported ssl version %s: using default",
+ ssl_version);
+ }
+
+ if (getenv("GIT_SSL_CIPHER_LIST"))
+ ssl_cipherlist = getenv("GIT_SSL_CIPHER_LIST");
+ if (ssl_cipherlist != NULL && *ssl_cipherlist)
+ curl_easy_setopt(result, CURLOPT_SSL_CIPHER_LIST,
+ ssl_cipherlist);
+
if (ssl_cert != NULL)
curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
if (has_cert_password())
if (ssl_capath != NULL)
curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
#endif
+#if LIBCURL_VERSION_NUM >= 0x072c00
+ if (ssl_pinnedkey != NULL)
+ curl_easy_setopt(result, CURLOPT_PINNEDPUBLICKEY, ssl_pinnedkey);
+#endif
if (ssl_cainfo != NULL)
curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
- curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
curl_low_speed_time);
}
- curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
+ curl_easy_setopt(result, CURLOPT_MAXREDIRS, 20);
#if LIBCURL_VERSION_NUM >= 0x071301
curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
#elif LIBCURL_VERSION_NUM >= 0x071101
curl_easy_setopt(result, CURLOPT_POST301, 1);
#endif
-
+#ifdef CURLPROTO_HTTP
+ curl_easy_setopt(result, CURLOPT_REDIR_PROTOCOLS,
+ get_curl_allowed_protocols(0));
+ curl_easy_setopt(result, CURLOPT_PROTOCOLS,
+ get_curl_allowed_protocols(-1));
+#else
+ warning("protocol restrictions not applied to curl redirects because\n"
+ "your curl version is too old (>= 7.19.4)");
+#endif
if (getenv("GIT_CURL_VERBOSE"))
- curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
+ curl_easy_setopt(result, CURLOPT_VERBOSE, 1L);
+ setup_curl_trace(result);
+ if (getenv("GIT_TRACE_CURL_NO_DATA"))
+ trace_curl_data = 0;
+ if (getenv("GIT_REDACT_COOKIES")) {
+ string_list_split(&cookies_to_redact,
+ getenv("GIT_REDACT_COOKIES"), ',', -1);
+ string_list_sort(&cookies_to_redact);
+ }
curl_easy_setopt(result, CURLOPT_USERAGENT,
user_agent ? user_agent : git_user_agent());
if (curl_ftp_no_epsv)
curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
- if (curl_http_proxy) {
- curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
- curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
+#ifdef CURLOPT_USE_SSL
+ if (curl_ssl_try)
+ curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY);
+#endif
+
+ /*
+ * CURL also examines these variables as a fallback; but we need to query
+ * them here in order to decide whether to prompt for missing password (cf.
+ * init_curl_proxy_auth()).
+ *
+ * Unlike many other common environment variables, these are historically
+ * lowercase only. It appears that CURL did not know this and implemented
+ * only uppercase variants, which was later corrected to take both - with
+ * the exception of http_proxy, which is lowercase only also in CURL. As
+ * the lowercase versions are the historical quasi-standard, they take
+ * precedence here, as in CURL.
+ */
+ if (!curl_http_proxy) {
+ if (http_auth.protocol && !strcmp(http_auth.protocol, "https")) {
+ var_override(&curl_http_proxy, getenv("HTTPS_PROXY"));
+ var_override(&curl_http_proxy, getenv("https_proxy"));
+ } else {
+ var_override(&curl_http_proxy, getenv("http_proxy"));
+ }
+ if (!curl_http_proxy) {
+ var_override(&curl_http_proxy, getenv("ALL_PROXY"));
+ var_override(&curl_http_proxy, getenv("all_proxy"));
+ }
}
+ if (curl_http_proxy && curl_http_proxy[0] == '\0') {
+ /*
+ * Handle case with the empty http.proxy value here to keep
+ * common code clean.
+ * NB: empty option disables proxying at all.
+ */
+ curl_easy_setopt(result, CURLOPT_PROXY, "");
+ } else if (curl_http_proxy) {
+#if LIBCURL_VERSION_NUM >= 0x071800
+ if (starts_with(curl_http_proxy, "socks5h"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5_HOSTNAME);
+ else if (starts_with(curl_http_proxy, "socks5"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
+ else if (starts_with(curl_http_proxy, "socks4a"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4A);
+ else if (starts_with(curl_http_proxy, "socks"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
+#endif
+#if LIBCURL_VERSION_NUM >= 0x073400
+ else if (starts_with(curl_http_proxy, "https"))
+ curl_easy_setopt(result,
+ CURLOPT_PROXYTYPE, CURLPROXY_HTTPS);
+#endif
+ if (strstr(curl_http_proxy, "://"))
+ credential_from_url(&proxy_auth, curl_http_proxy);
+ else {
+ struct strbuf url = STRBUF_INIT;
+ strbuf_addf(&url, "http://%s", curl_http_proxy);
+ credential_from_url(&proxy_auth, url.buf);
+ strbuf_release(&url);
+ }
+
+ if (!proxy_auth.host)
+ die("Invalid proxy URL '%s'", curl_http_proxy);
+
+ curl_easy_setopt(result, CURLOPT_PROXY, proxy_auth.host);
+#if LIBCURL_VERSION_NUM >= 0x071304
+ var_override(&curl_no_proxy, getenv("NO_PROXY"));
+ var_override(&curl_no_proxy, getenv("no_proxy"));
+ curl_easy_setopt(result, CURLOPT_NOPROXY, curl_no_proxy);
+#endif
+ }
+ init_curl_proxy_auth(result);
+
+ set_curl_keepalive(result);
+
return result;
}
*var = val;
}
+static void protocol_http_header(void)
+{
+ if (get_protocol_version_config() > 0) {
+ struct strbuf protocol_header = STRBUF_INIT;
+
+ strbuf_addf(&protocol_header, GIT_PROTOCOL_HEADER ": version=%d",
+ get_protocol_version_config());
+
+
+ extra_http_headers = curl_slist_append(extra_http_headers,
+ protocol_header.buf);
+ strbuf_release(&protocol_header);
+ }
+}
+
void http_init(struct remote *remote, const char *url, int proactive_auth)
{
char *low_speed_limit;
char *low_speed_time;
+ char *normalized_url;
+ struct urlmatch_config config = { STRING_LIST_INIT_DUP };
+
+ config.section = "http";
+ config.key = NULL;
+ config.collect_fn = http_options;
+ config.cascade_fn = git_default_config;
+ config.cb = NULL;
http_is_verbose = 0;
+ normalized_url = url_normalize(url, &config.url);
- git_config(http_options, NULL);
+ git_config(urlmatch_config_entry, &config);
+ free(normalized_url);
- curl_global_init(CURL_GLOBAL_ALL);
+ if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK)
+ die("curl_global_init failed");
http_proactive_auth = proactive_auth;
if (remote && remote->http_proxy)
curl_http_proxy = xstrdup(remote->http_proxy);
- pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
- no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
+ if (remote)
+ var_override(&http_proxy_authmethod, remote->http_proxy_authmethod);
+
+ protocol_http_header();
+
+ pragma_header = curl_slist_append(http_copy_default_headers(),
+ "Pragma: no-cache");
+ no_pragma_header = curl_slist_append(http_copy_default_headers(),
+ "Pragma:");
#ifdef USE_CURL_MULTI
{
}
curlm = curl_multi_init();
- if (curlm == NULL) {
- fprintf(stderr, "Error creating curl multi handle.\n");
- exit(1);
- }
+ if (!curlm)
+ die("curl_multi_init failed");
#endif
if (getenv("GIT_SSL_NO_VERIFY"))
credential_from_url(&http_auth, url);
if (!ssl_cert_password_required &&
getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
- !prefixcmp(url, "https://"))
+ starts_with(url, "https://"))
ssl_cert_password_required = 1;
}
while (slot != NULL) {
struct active_request_slot *next = slot->next;
if (slot->curl != NULL) {
-#ifdef USE_CURL_MULTI
- curl_multi_remove_handle(curlm, slot->curl);
-#endif
+ xmulti_remove_handle(slot);
curl_easy_cleanup(slot->curl);
}
free(slot);
#endif
curl_global_cleanup();
+ curl_slist_free_all(extra_http_headers);
+ extra_http_headers = NULL;
+
curl_slist_free_all(pragma_header);
pragma_header = NULL;
curl_http_proxy = NULL;
}
+ if (proxy_auth.password) {
+ memset(proxy_auth.password, 0, strlen(proxy_auth.password));
+ FREE_AND_NULL(proxy_auth.password);
+ }
+
+ free((void *)curl_proxyuserpwd);
+ curl_proxyuserpwd = NULL;
+
+ free((void *)http_proxy_authmethod);
+ http_proxy_authmethod = NULL;
+
if (cert_auth.password != NULL) {
memset(cert_auth.password, 0, strlen(cert_auth.password));
- free(cert_auth.password);
- cert_auth.password = NULL;
+ FREE_AND_NULL(cert_auth.password);
}
ssl_cert_password_required = 0;
+
+ FREE_AND_NULL(cached_accept_language);
}
struct active_request_slot *get_active_slot(void)
slot->callback_data = NULL;
slot->callback_func = NULL;
curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file);
+ if (curl_save_cookies)
+ curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL);
curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
- if (http_auth.password)
+ curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1);
+ curl_easy_setopt(slot->curl, CURLOPT_RANGE, NULL);
+
+ /*
+ * Default following to off unless "ALWAYS" is configured; this gives
+ * callers a sane starting point, and they can tweak for individual
+ * HTTP_FOLLOW_* cases themselves.
+ */
+ if (http_follow_config == HTTP_FOLLOW_ALWAYS)
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
+ else
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 0);
+
+#if LIBCURL_VERSION_NUM >= 0x070a08
+ curl_easy_setopt(slot->curl, CURLOPT_IPRESOLVE, git_curl_ipresolve);
+#endif
+#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
+ curl_easy_setopt(slot->curl, CURLOPT_HTTPAUTH, http_auth_methods);
+#endif
+ if (http_auth.password || curl_empty_auth_enabled())
init_curl_http_auth(slot->curl);
return slot;
if (curlm_result != CURLM_OK &&
curlm_result != CURLM_CALL_MULTI_PERFORM) {
+ warning("curl_multi_add_handle failed: %s",
+ curl_multi_strerror(curlm_result));
active_requests--;
slot->in_use = 0;
return 0;
void add_fill_function(void *data, int (*fill)(void *))
{
- struct fill_chain *new = xmalloc(sizeof(*new));
+ struct fill_chain *new_fill = xmalloc(sizeof(*new_fill));
struct fill_chain **linkp = &fill_cfg;
- new->data = data;
- new->fill = fill;
- new->next = NULL;
+ new_fill->data = data;
+ new_fill->fill = fill;
+ new_fill->next = NULL;
while (*linkp)
linkp = &(*linkp)->next;
- *linkp = new;
+ *linkp = new_fill;
}
void fill_active_slots(void)
#endif
}
-static void closedown_active_slot(struct active_request_slot *slot)
-{
- active_requests--;
- slot->in_use = 0;
-}
-
static void release_active_slot(struct active_request_slot *slot)
{
closedown_active_slot(slot);
- if (slot->curl && curl_session_count > min_curl_sessions) {
-#ifdef USE_CURL_MULTI
- curl_multi_remove_handle(curlm, slot->curl);
-#endif
- curl_easy_cleanup(slot->curl);
- slot->curl = NULL;
- curl_session_count--;
+ if (slot->curl) {
+ xmulti_remove_handle(slot);
+ if (curl_session_count > min_curl_sessions) {
+ curl_easy_cleanup(slot->curl);
+ slot->curl = NULL;
+ curl_session_count--;
+ }
}
#ifdef USE_CURL_MULTI
fill_active_slots();
#endif
}
-void finish_active_slot(struct active_request_slot *slot)
-{
- closedown_active_slot(slot);
- curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
-
- if (slot->finished != NULL)
- (*slot->finished) = 1;
-
- /* Store slot results so they can be read after the slot is reused */
- if (slot->results != NULL) {
- slot->results->curl_result = slot->curl_result;
- slot->results->http_code = slot->http_code;
- }
-
- /* Run callback if appropriate */
- if (slot->callback_func != NULL)
- slot->callback_func(slot->callback_data);
-}
-
void finish_all_active_slots(void)
{
struct active_request_slot *slot = active_queue_head;
strbuf_addf(buf, "objects/%.*s/", 2, hex);
if (!only_two_digit_prefix)
- strbuf_addf(buf, "%s", hex+2);
+ strbuf_addstr(buf, hex + 2);
}
char *get_remote_object_url(const char *url, const char *hex,
return strbuf_detach(&buf, NULL);
}
-int handle_curl_result(struct slot_results *results)
+static int handle_curl_result(struct slot_results *results)
{
+ /*
+ * If we see a failing http code with CURLE_OK, we have turned off
+ * FAILONERROR (to keep the server's custom error response), and should
+ * translate the code into failure here.
+ *
+ * Likewise, if we see a redirect (30x code), that means we turned off
+ * redirect-following, and we should treat the result as an error.
+ */
+ if (results->curl_result == CURLE_OK &&
+ results->http_code >= 300) {
+ results->curl_result = CURLE_HTTP_RETURNED_ERROR;
+ /*
+ * Normally curl will already have put the "reason phrase"
+ * from the server into curl_errorstr; unfortunately without
+ * FAILONERROR it is lost, so we can give only the numeric
+ * status code.
+ */
+ xsnprintf(curl_errorstr, sizeof(curl_errorstr),
+ "The requested URL returned error: %ld",
+ results->http_code);
+ }
+
if (results->curl_result == CURLE_OK) {
credential_approve(&http_auth);
+ if (proxy_auth.password)
+ credential_approve(&proxy_auth);
return HTTP_OK;
} else if (missing_target(results))
return HTTP_MISSING_TARGET;
credential_reject(&http_auth);
return HTTP_NOAUTH;
} else {
- credential_fill(&http_auth);
+#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
+ http_auth_methods &= ~CURLAUTH_GSSNEGOTIATE;
+ if (results->auth_avail) {
+ http_auth_methods &= results->auth_avail;
+ http_auth_methods_restricted = 1;
+ }
+#endif
return HTTP_REAUTH;
}
} else {
+ if (results->http_connectcode == 407)
+ credential_reject(&proxy_auth);
#if LIBCURL_VERSION_NUM >= 0x070c00
if (!curl_errorstr[0])
strlcpy(curl_errorstr,
}
}
+int run_one_slot(struct active_request_slot *slot,
+ struct slot_results *results)
+{
+ slot->results = results;
+ if (!start_active_slot(slot)) {
+ xsnprintf(curl_errorstr, sizeof(curl_errorstr),
+ "failed to start HTTP request");
+ return HTTP_START_FAILED;
+ }
+
+ run_active_slot(slot);
+ return handle_curl_result(results);
+}
+
+struct curl_slist *http_copy_default_headers(void)
+{
+ struct curl_slist *headers = NULL, *h;
+
+ for (h = extra_http_headers; h; h = h->next)
+ headers = curl_slist_append(headers, h->data);
+
+ return headers;
+}
+
+static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf)
+{
+ char *ptr;
+ CURLcode ret;
+
+ strbuf_reset(buf);
+ ret = curl_easy_getinfo(curl, info, &ptr);
+ if (!ret && ptr)
+ strbuf_addstr(buf, ptr);
+ return ret;
+}
+
+/*
+ * Check for and extract a content-type parameter. "raw"
+ * should be positioned at the start of the potential
+ * parameter, with any whitespace already removed.
+ *
+ * "name" is the name of the parameter. The value is appended
+ * to "out".
+ */
+static int extract_param(const char *raw, const char *name,
+ struct strbuf *out)
+{
+ size_t len = strlen(name);
+
+ if (strncasecmp(raw, name, len))
+ return -1;
+ raw += len;
+
+ if (*raw != '=')
+ return -1;
+ raw++;
+
+ while (*raw && !isspace(*raw) && *raw != ';')
+ strbuf_addch(out, *raw++);
+ return 0;
+}
+
+/*
+ * Extract a normalized version of the content type, with any
+ * spaces suppressed, all letters lowercased, and no trailing ";"
+ * or parameters.
+ *
+ * Note that we will silently remove even invalid whitespace. For
+ * example, "text / plain" is specifically forbidden by RFC 2616,
+ * but "text/plain" is the only reasonable output, and this keeps
+ * our code simple.
+ *
+ * If the "charset" argument is not NULL, store the value of any
+ * charset parameter there.
+ *
+ * Example:
+ * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8"
+ * "text / plain" -> "text/plain"
+ */
+static void extract_content_type(struct strbuf *raw, struct strbuf *type,
+ struct strbuf *charset)
+{
+ const char *p;
+
+ strbuf_reset(type);
+ strbuf_grow(type, raw->len);
+ for (p = raw->buf; *p; p++) {
+ if (isspace(*p))
+ continue;
+ if (*p == ';') {
+ p++;
+ break;
+ }
+ strbuf_addch(type, tolower(*p));
+ }
+
+ if (!charset)
+ return;
+
+ strbuf_reset(charset);
+ while (*p) {
+ while (isspace(*p) || *p == ';')
+ p++;
+ if (!extract_param(p, "charset", charset))
+ return;
+ while (*p && !isspace(*p))
+ p++;
+ }
+
+ if (!charset->len && starts_with(type->buf, "text/"))
+ strbuf_addstr(charset, "ISO-8859-1");
+}
+
+static void write_accept_language(struct strbuf *buf)
+{
+ /*
+ * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than
+ * that, q-value will be smaller than 0.001, the minimum q-value the
+ * HTTP specification allows. See
+ * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value.
+ */
+ const int MAX_DECIMAL_PLACES = 3;
+ const int MAX_LANGUAGE_TAGS = 1000;
+ const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000;
+ char **language_tags = NULL;
+ int num_langs = 0;
+ const char *s = get_preferred_languages();
+ int i;
+ struct strbuf tag = STRBUF_INIT;
+
+ /* Don't add Accept-Language header if no language is preferred. */
+ if (!s)
+ return;
+
+ /*
+ * Split the colon-separated string of preferred languages into
+ * language_tags array.
+ */
+ do {
+ /* collect language tag */
+ for (; *s && (isalnum(*s) || *s == '_'); s++)
+ strbuf_addch(&tag, *s == '_' ? '-' : *s);
+
+ /* skip .codeset, @modifier and any other unnecessary parts */
+ while (*s && *s != ':')
+ s++;
+
+ if (tag.len) {
+ num_langs++;
+ REALLOC_ARRAY(language_tags, num_langs);
+ language_tags[num_langs - 1] = strbuf_detach(&tag, NULL);
+ if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */
+ break;
+ }
+ } while (*s++);
+
+ /* write Accept-Language header into buf */
+ if (num_langs) {
+ int last_buf_len = 0;
+ int max_q;
+ int decimal_places;
+ char q_format[32];
+
+ /* add '*' */
+ REALLOC_ARRAY(language_tags, num_langs + 1);
+ language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */
+
+ /* compute decimal_places */
+ for (max_q = 1, decimal_places = 0;
+ max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES;
+ decimal_places++, max_q *= 10)
+ ;
+
+ xsnprintf(q_format, sizeof(q_format), ";q=0.%%0%dd", decimal_places);
+
+ strbuf_addstr(buf, "Accept-Language: ");
+
+ for (i = 0; i < num_langs; i++) {
+ if (i > 0)
+ strbuf_addstr(buf, ", ");
+
+ strbuf_addstr(buf, language_tags[i]);
+
+ if (i > 0)
+ strbuf_addf(buf, q_format, max_q - i);
+
+ if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) {
+ strbuf_remove(buf, last_buf_len, buf->len - last_buf_len);
+ break;
+ }
+
+ last_buf_len = buf->len;
+ }
+ }
+
+ /* free language tags -- last one is a static '*' */
+ for (i = 0; i < num_langs - 1; i++)
+ free(language_tags[i]);
+ free(language_tags);
+}
+
+/*
+ * Get an Accept-Language header which indicates user's preferred languages.
+ *
+ * Examples:
+ * LANGUAGE= -> ""
+ * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1"
+ * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1"
+ * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1"
+ * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1"
+ * LANGUAGE= LANG=C -> ""
+ */
+static const char *get_accept_language(void)
+{
+ if (!cached_accept_language) {
+ struct strbuf buf = STRBUF_INIT;
+ write_accept_language(&buf);
+ if (buf.len > 0)
+ cached_accept_language = strbuf_detach(&buf, NULL);
+ }
+
+ return cached_accept_language;
+}
+
+static void http_opt_request_remainder(CURL *curl, off_t pos)
+{
+ char buf[128];
+ xsnprintf(buf, sizeof(buf), "%"PRIuMAX"-", (uintmax_t)pos);
+ curl_easy_setopt(curl, CURLOPT_RANGE, buf);
+}
+
/* http_request() targets */
#define HTTP_REQUEST_STRBUF 0
#define HTTP_REQUEST_FILE 1
-static int http_request(const char *url, void *result, int target, int options)
+static int http_request(const char *url,
+ void *result, int target,
+ const struct http_get_options *options)
{
struct active_request_slot *slot;
struct slot_results results;
- struct curl_slist *headers = NULL;
+ struct curl_slist *headers = http_copy_default_headers();
struct strbuf buf = STRBUF_INIT;
+ const char *accept_language;
int ret;
slot = get_active_slot();
- slot->results = &results;
curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
if (result == NULL) {
curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
if (target == HTTP_REQUEST_FILE) {
- long posn = ftell(result);
+ off_t posn = ftello(result);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite);
- if (posn > 0) {
- strbuf_addf(&buf, "Range: bytes=%ld-", posn);
- headers = curl_slist_append(headers, buf.buf);
- strbuf_reset(&buf);
- }
+ if (posn > 0)
+ http_opt_request_remainder(slot->curl, posn);
} else
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
fwrite_buffer);
}
+ accept_language = get_accept_language();
+
+ if (accept_language)
+ headers = curl_slist_append(headers, accept_language);
+
strbuf_addstr(&buf, "Pragma:");
- if (options & HTTP_NO_CACHE)
+ if (options && options->no_cache)
strbuf_addstr(&buf, " no-cache");
+ if (options && options->keep_error)
+ curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
+ if (options && options->initial_request &&
+ http_follow_config == HTTP_FOLLOW_INITIAL)
+ curl_easy_setopt(slot->curl, CURLOPT_FOLLOWLOCATION, 1);
headers = curl_slist_append(headers, buf.buf);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
- if (start_active_slot(slot)) {
- run_active_slot(slot);
- ret = handle_curl_result(&results);
- } else {
- error("Unable to start HTTP request for %s", url);
- ret = HTTP_START_FAILED;
+ ret = run_one_slot(slot, &results);
+
+ if (options && options->content_type) {
+ struct strbuf raw = STRBUF_INIT;
+ curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw);
+ extract_content_type(&raw, options->content_type,
+ options->charset);
+ strbuf_release(&raw);
}
+ if (options && options->effective_url)
+ curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL,
+ options->effective_url);
+
curl_slist_free_all(headers);
strbuf_release(&buf);
return ret;
}
-static int http_request_reauth(const char *url, void *result, int target,
- int options)
+/*
+ * Update the "base" url to a more appropriate value, as deduced by
+ * redirects seen when requesting a URL starting with "url".
+ *
+ * The "asked" parameter is a URL that we asked curl to access, and must begin
+ * with "base".
+ *
+ * The "got" parameter is the URL that curl reported to us as where we ended
+ * up.
+ *
+ * Returns 1 if we updated the base url, 0 otherwise.
+ *
+ * Our basic strategy is to compare "base" and "asked" to find the bits
+ * specific to our request. We then strip those bits off of "got" to yield the
+ * new base. So for example, if our base is "http://example.com/foo.git",
+ * and we ask for "http://example.com/foo.git/info/refs", we might end up
+ * with "https://other.example.com/foo.git/info/refs". We would want the
+ * new URL to become "https://other.example.com/foo.git".
+ *
+ * Note that this assumes a sane redirect scheme. It's entirely possible
+ * in the example above to end up at a URL that does not even end in
+ * "info/refs". In such a case we die. There's not much we can do, such a
+ * scheme is unlikely to represent a real git repository, and failing to
+ * rewrite the base opens options for malicious redirects to do funny things.
+ */
+static int update_url_from_redirect(struct strbuf *base,
+ const char *asked,
+ const struct strbuf *got)
+{
+ const char *tail;
+ size_t new_len;
+
+ if (!strcmp(asked, got->buf))
+ return 0;
+
+ if (!skip_prefix(asked, base->buf, &tail))
+ die("BUG: update_url_from_redirect: %s is not a superset of %s",
+ asked, base->buf);
+
+ new_len = got->len;
+ if (!strip_suffix_mem(got->buf, &new_len, tail))
+ die(_("unable to update url base from redirection:\n"
+ " asked for: %s\n"
+ " redirect: %s"),
+ asked, got->buf);
+
+ strbuf_reset(base);
+ strbuf_add(base, got->buf, new_len);
+
+ return 1;
+}
+
+static int http_request_reauth(const char *url,
+ void *result, int target,
+ struct http_get_options *options)
{
int ret = http_request(url, result, target, options);
+
+ if (ret != HTTP_OK && ret != HTTP_REAUTH)
+ return ret;
+
+ if (options && options->effective_url && options->base_url) {
+ if (update_url_from_redirect(options->base_url,
+ url, options->effective_url)) {
+ credential_from_url(&http_auth, options->base_url->buf);
+ url = options->effective_url->buf;
+ }
+ }
+
if (ret != HTTP_REAUTH)
return ret;
+
+ /*
+ * If we are using KEEP_ERROR, the previous request may have
+ * put cruft into our output stream; we should clear it out before
+ * making our next request. We only know how to do this for
+ * the strbuf case, but that is enough to satisfy current callers.
+ */
+ if (options && options->keep_error) {
+ switch (target) {
+ case HTTP_REQUEST_STRBUF:
+ strbuf_reset(result);
+ break;
+ default:
+ die("BUG: HTTP_KEEP_ERROR is only supported with strbufs");
+ }
+ }
+
+ credential_fill(&http_auth);
+
return http_request(url, result, target, options);
}
-int http_get_strbuf(const char *url, struct strbuf *result, int options)
+int http_get_strbuf(const char *url,
+ struct strbuf *result,
+ struct http_get_options *options)
{
return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options);
}
* If a previous interrupted download is detected (i.e. a previous temporary
* file is still around) the download is resumed.
*/
-static int http_get_file(const char *url, const char *filename, int options)
+static int http_get_file(const char *url, const char *filename,
+ struct http_get_options *options)
{
int ret;
struct strbuf tmpfile = STRBUF_INIT;
strbuf_addf(&tmpfile, "%s.temp", filename);
result = fopen(tmpfile.buf, "a");
- if (! result) {
+ if (!result) {
error("Unable to open local file %s", tmpfile.buf);
ret = HTTP_ERROR;
goto cleanup;
ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options);
fclose(result);
- if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
+ if (ret == HTTP_OK && finalize_object_file(tmpfile.buf, filename))
ret = HTTP_ERROR;
cleanup:
strbuf_release(&tmpfile);
return ret;
}
-int http_error(const char *url, int ret)
-{
- /* http_request has already handled HTTP_START_FAILED. */
- if (ret != HTTP_START_FAILED)
- error("%s while accessing %s", curl_errorstr, url);
-
- return ret;
-}
-
int http_fetch_ref(const char *base, struct ref *ref)
{
+ struct http_get_options options = {0};
char *url;
struct strbuf buffer = STRBUF_INIT;
int ret = -1;
+ options.no_cache = 1;
+
url = quote_ref_url(base, ref->name);
- if (http_get_strbuf(url, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
+ if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) {
strbuf_rtrim(&buffer);
if (buffer.len == 40)
- ret = get_sha1_hex(buffer.buf, ref->old_sha1);
- else if (!prefixcmp(buffer.buf, "ref: ")) {
+ ret = get_oid_hex(buffer.buf, &ref->old_oid);
+ else if (starts_with(buffer.buf, "ref: ")) {
ref->symref = xstrdup(buffer.buf + 5);
ret = 0;
}
strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
tmp = strbuf_detach(&buf, NULL);
- if (http_get_file(url, tmp, 0) != HTTP_OK) {
+ if (http_get_file(url, tmp, NULL) != HTTP_OK) {
error("Unable to get pack index %s", url);
- free(tmp);
- tmp = NULL;
+ FREE_AND_NULL(tmp);
}
free(url);
int ret;
if (has_pack_index(sha1)) {
- new_pack = parse_pack_index(sha1, NULL);
+ new_pack = parse_pack_index(sha1, sha1_pack_index_name(sha1));
if (!new_pack)
return -1; /* parse_pack_index() already issued error message */
goto add_pack;
ret = verify_pack_index(new_pack);
if (!ret) {
close_pack_index(new_pack);
- ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
+ ret = finalize_object_file(tmp_idx, sha1_pack_index_name(sha1));
}
free(tmp_idx);
if (ret)
int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
{
+ struct http_get_options options = {0};
int ret = 0, i = 0;
char *url, *data;
struct strbuf buf = STRBUF_INIT;
strbuf_addstr(&buf, "objects/info/packs");
url = strbuf_detach(&buf, NULL);
- ret = http_get_strbuf(url, &buf, HTTP_NO_CACHE);
+ options.no_cache = 1;
+ ret = http_get_strbuf(url, &buf, &options);
if (ret != HTTP_OK)
goto cleanup;
case 'P':
i++;
if (i + 52 <= buf.len &&
- !prefixcmp(data + i, " pack-") &&
- !prefixcmp(data + i + 46, ".pack\n")) {
+ starts_with(data + i, " pack-") &&
+ starts_with(data + i + 46, ".pack\n")) {
get_sha1_hex(data + i + 6, sha1);
fetch_and_setup_pack_index(packs_head, sha1,
base_url);
fclose(preq->packfile);
preq->packfile = NULL;
}
- if (preq->range_header != NULL) {
- curl_slist_free_all(preq->range_header);
- preq->range_header = NULL;
- }
preq->slot = NULL;
free(preq->url);
+ free(preq);
}
int finish_http_pack_request(struct http_pack_request *preq)
struct packed_git **lst;
struct packed_git *p = preq->target;
char *tmp_idx;
- struct child_process ip;
- const char *ip_argv[8];
+ size_t len;
+ struct child_process ip = CHILD_PROCESS_INIT;
close_pack_index(p);
lst = &((*lst)->next);
*lst = (*lst)->next;
- tmp_idx = xstrdup(preq->tmpfile);
- strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
- ".idx.temp");
-
- ip_argv[0] = "index-pack";
- ip_argv[1] = "-o";
- ip_argv[2] = tmp_idx;
- ip_argv[3] = preq->tmpfile;
- ip_argv[4] = NULL;
+ if (!strip_suffix(preq->tmpfile, ".pack.temp", &len))
+ die("BUG: pack tmpfile does not end in .pack.temp?");
+ tmp_idx = xstrfmt("%.*s.idx.temp", (int)len, preq->tmpfile);
- memset(&ip, 0, sizeof(ip));
- ip.argv = ip_argv;
+ argv_array_push(&ip.args, "index-pack");
+ argv_array_pushl(&ip.args, "-o", tmp_idx, NULL);
+ argv_array_push(&ip.args, preq->tmpfile);
ip.git_cmd = 1;
ip.no_stdin = 1;
ip.no_stdout = 1;
unlink(sha1_pack_index_name(p->sha1));
- if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
- || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
+ if (finalize_object_file(preq->tmpfile, sha1_pack_name(p->sha1))
+ || finalize_object_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
free(tmp_idx);
return -1;
}
struct http_pack_request *new_http_pack_request(
struct packed_git *target, const char *base_url)
{
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
+ off_t prev_posn = 0;
struct strbuf buf = STRBUF_INIT;
struct http_pack_request *preq;
* If there is data present from a previous transfer attempt,
* resume where it left off
*/
- prev_posn = ftell(preq->packfile);
+ prev_posn = ftello(preq->packfile);
if (prev_posn>0) {
if (http_is_verbose)
fprintf(stderr,
- "Resuming fetch of pack %s at byte %ld\n",
- sha1_to_hex(target->sha1), prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- preq->range_header = curl_slist_append(NULL, range);
- curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
- preq->range_header);
+ "Resuming fetch of pack %s at byte %"PRIuMAX"\n",
+ sha1_to_hex(target->sha1), (uintmax_t)prev_posn);
+ http_opt_request_remainder(preq->slot->curl, prev_posn);
}
return preq;
unsigned char expn[4096];
size_t size = eltsize * nmemb;
int posn = 0;
- struct http_object_request *freq =
- (struct http_object_request *)data;
+ struct http_object_request *freq = data;
+ struct active_request_slot *slot = freq->slot;
+
+ if (slot) {
+ CURLcode c = curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE,
+ &slot->http_code);
+ if (c != CURLE_OK)
+ die("BUG: curl_easy_getinfo for HTTP code failed: %s",
+ curl_easy_strerror(c));
+ if (slot->http_code >= 300)
+ return size;
+ }
+
do {
ssize_t retval = xwrite(freq->localfile,
(char *) ptr + posn, size - posn);
unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
- char *filename;
+ struct strbuf filename = STRBUF_INIT;
char prevfile[PATH_MAX];
int prevlocal;
char prev_buf[PREV_BUF_SIZE];
ssize_t prev_read = 0;
- long prev_posn = 0;
- char range[RANGE_HEADER_SIZE];
- struct curl_slist *range_header = NULL;
+ off_t prev_posn = 0;
struct http_object_request *freq;
freq = xcalloc(1, sizeof(*freq));
hashcpy(freq->sha1, sha1);
freq->localfile = -1;
- filename = sha1_file_name(sha1);
+ sha1_file_name(&filename, sha1);
snprintf(freq->tmpfile, sizeof(freq->tmpfile),
- "%s.temp", filename);
+ "%s.temp", filename.buf);
- snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
+ snprintf(prevfile, sizeof(prevfile), "%s.prev", filename.buf);
unlink_or_warn(prevfile);
rename(freq->tmpfile, prevfile);
unlink_or_warn(freq->tmpfile);
+ strbuf_release(&filename);
if (freq->localfile != -1)
error("fd leakage in start: %d", freq->localfile);
}
if (freq->localfile < 0) {
- error("Couldn't create temporary file %s: %s",
- freq->tmpfile, strerror(errno));
+ error_errno("Couldn't create temporary file %s", freq->tmpfile);
goto abort;
}
prev_posn = 0;
lseek(freq->localfile, 0, SEEK_SET);
if (ftruncate(freq->localfile, 0) < 0) {
- error("Couldn't truncate temporary file %s: %s",
- freq->tmpfile, strerror(errno));
+ error_errno("Couldn't truncate temporary file %s",
+ freq->tmpfile);
goto abort;
}
}
freq->slot = get_active_slot();
curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
+ curl_easy_setopt(freq->slot->curl, CURLOPT_FAILONERROR, 0);
curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
if (prev_posn>0) {
if (http_is_verbose)
fprintf(stderr,
- "Resuming fetch of object %s at byte %ld\n",
- hex, prev_posn);
- sprintf(range, "Range: bytes=%ld-", prev_posn);
- range_header = curl_slist_append(range_header, range);
- curl_easy_setopt(freq->slot->curl,
- CURLOPT_HTTPHEADER, range_header);
+ "Resuming fetch of object %s at byte %"PRIuMAX"\n",
+ hex, (uintmax_t)prev_posn);
+ http_opt_request_remainder(freq->slot->curl, prev_posn);
}
return freq;
int finish_http_object_request(struct http_object_request *freq)
{
struct stat st;
+ struct strbuf filename = STRBUF_INIT;
close(freq->localfile);
freq->localfile = -1;
unlink_or_warn(freq->tmpfile);
return -1;
}
- freq->rename =
- move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
+
+ sha1_file_name(&filename, freq->sha1);
+ freq->rename = finalize_object_file(freq->tmpfile, filename.buf);
+ strbuf_release(&filename);
return freq->rename;
}
freq->localfile = -1;
}
if (freq->url != NULL) {
- free(freq->url);
- freq->url = NULL;
+ FREE_AND_NULL(freq->url);
}
if (freq->slot != NULL) {
freq->slot->callback_func = NULL;