* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
+ * are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
*
***************************************************************************/
-#include "setup.h"
+#include "curl_setup.h"
-/* NTLM details:
+#if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM)
- http://davenport.sourceforge.net/ntlm.html
- http://www.innovation.ch/java/ntlm.html
-*/
-
-#ifndef CURL_DISABLE_HTTP
-#ifdef USE_NTLM
+/*
+ * NTLM details:
+ *
+ * https://davenport.sourceforge.io/ntlm.html
+ * https://www.innovation.ch/java/ntlm.html
+ */
#define DEBUG_ME 0
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#ifdef HAVE_SYS_WAIT_H
-#include <sys/wait.h>
-#endif
-#ifdef HAVE_SIGNAL_H
-#include <signal.h>
-#endif
-
-#if (defined(NETWARE) && !defined(__NOVELL_LIBC__))
-#include <netdb.h>
-#endif
-
#include "urldata.h"
-#include "non-ascii.h" /* for Curl_convert_... prototypes */
#include "sendf.h"
-#include "select.h"
-#include "rawstr.h"
-#include "curl_base64.h"
+#include "strcase.h"
#include "http_ntlm.h"
+#include "curl_ntlm_core.h"
+#include "curl_ntlm_wb.h"
+#include "vauth/vauth.h"
#include "url.h"
-#include "strerror.h"
-#include "curl_gethostname.h"
-#include "curl_memory.h"
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
+/* SSL backend-specific #if branches in this file must be kept in the order
+ documented in curl_ntlm_core. */
+#if defined(NTLM_NEEDS_NSS_INIT)
+#include "vtls/nssg.h"
+#elif defined(USE_WINDOWS_SSPI)
+#include "curl_sspi.h"
+#endif
+
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
+#include "memdebug.h"
#if DEBUG_ME
# define DEBUG_OUT(x) x
#else
-# define DEBUG_OUT(x)
+# define DEBUG_OUT(x) Curl_nop_stmt
#endif
CURLcode Curl_input_ntlm(struct connectdata *conn,
struct ntlmdata *ntlm;
CURLcode result = CURLE_OK;
-#ifdef USE_NSS
- result = Curl_nss_force_init(conn->data);
- if(result)
- return result;
-#endif
-
ntlm = proxy ? &conn->proxyntlm : &conn->ntlm;
- /* skip initial whitespaces */
- while(*header && ISSPACE(*header))
- header++;
-
if(checkprefix("NTLM", header)) {
header += strlen("NTLM");
header++;
if(*header) {
- /* We got a type-2 message */
-
- result = Curl_ntlm_decode_type2_message(conn->data, header, ntlm);
- if(CURLE_OK != result)
+ result = Curl_auth_decode_ntlm_type2_message(conn->data, header, ntlm);
+ if(result)
return result;
+
+ ntlm->state = NTLMSTATE_TYPE2; /* We got a type-2 message */
}
else {
- if(ntlm->state >= NTLMSTATE_TYPE1) {
+ if(ntlm->state == NTLMSTATE_LAST) {
+ infof(conn->data, "NTLM auth restarted\n");
+ Curl_http_ntlm_cleanup(conn);
+ }
+ else if(ntlm->state == NTLMSTATE_TYPE3) {
+ infof(conn->data, "NTLM handshake rejected\n");
+ Curl_http_ntlm_cleanup(conn);
+ ntlm->state = NTLMSTATE_NONE;
+ return CURLE_REMOTE_ACCESS_DENIED;
+ }
+ else if(ntlm->state >= NTLMSTATE_TYPE1) {
infof(conn->data, "NTLM handshake failure (internal error)\n");
return CURLE_REMOTE_ACCESS_DENIED;
}
- ntlm->state = NTLMSTATE_TYPE1; /* we should sent away a type-1 */
+ ntlm->state = NTLMSTATE_TYPE1; /* We should send away a type-1 */
}
}
return result;
}
-#ifdef WINBIND_NTLM_AUTH_ENABLED
-static void sso_ntlm_close(struct connectdata *conn)
-{
- if(conn->ntlm_auth_hlpr_socket != CURL_SOCKET_BAD) {
- sclose(conn->ntlm_auth_hlpr_socket);
- conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
- }
-
- if(conn->ntlm_auth_hlpr_pid) {
- int i;
- for(i = 0; i < 4; i++) {
- pid_t ret = waitpid(conn->ntlm_auth_hlpr_pid, NULL, WNOHANG);
- if(ret == conn->ntlm_auth_hlpr_pid || errno == ECHILD)
- break;
- switch(i) {
- case 0:
- kill(conn->ntlm_auth_hlpr_pid, SIGTERM);
- break;
- case 1:
- /* Give the process another moment to shut down cleanly before
- bringing down the axe */
- Curl_wait_ms(1);
- break;
- case 2:
- kill(conn->ntlm_auth_hlpr_pid, SIGKILL);
- break;
- case 3:
- break;
- }
- }
- conn->ntlm_auth_hlpr_pid = 0;
- }
-
- Curl_safefree(conn->challenge_header);
- conn->challenge_header = NULL;
- Curl_safefree(conn->response_header);
- conn->response_header = NULL;
-}
-
-static CURLcode sso_ntlm_initiate(struct connectdata *conn,
- const char *userp)
-{
- curl_socket_t sockfds[2];
- pid_t child_pid;
- const char *username;
- char *slash, *domain = NULL;
- const char *ntlm_auth = NULL;
- char *ntlm_auth_alloc = NULL;
- int error;
-
- /* Return if communication with ntlm_auth already set up */
- if(conn->ntlm_auth_hlpr_socket != CURL_SOCKET_BAD ||
- conn->ntlm_auth_hlpr_pid)
- return CURLE_OK;
-
- username = userp;
- slash = strpbrk(username, "\\/");
- if(slash) {
- if((domain = strdup(username)) == NULL)
- return CURLE_OUT_OF_MEMORY;
- slash = domain + (slash - username);
- *slash = '\0';
- username = username + (slash - domain) + 1;
- }
-
- /* For testing purposes, when DEBUGBUILD is defined and environment
- variable CURL_NTLM_AUTH is set a fake_ntlm is used to perform
- NTLM challenge/response which only accepts commands and output
- strings pre-written in test case definitions */
-#ifdef DEBUGBUILD
- ntlm_auth_alloc = curl_getenv("CURL_NTLM_AUTH");
- if(ntlm_auth_alloc)
- ntlm_auth = ntlm_auth_alloc;
- else
-#endif
- ntlm_auth = WINBIND_NTLM_AUTH_FILE;
-
- if(access(ntlm_auth, X_OK) != 0) {
- error = ERRNO;
- failf(conn->data, "Could not access ntlm_auth: %s errno %d: %s",
- ntlm_auth, error, Curl_strerror(conn, error));
- goto done;
- }
-
- if(socketpair(AF_UNIX, SOCK_STREAM, 0, sockfds)) {
- error = ERRNO;
- failf(conn->data, "Could not open socket pair. errno %d: %s",
- error, Curl_strerror(conn, error));
- goto done;
- }
-
- child_pid = fork();
- if(child_pid == -1) {
- error = ERRNO;
- sclose(sockfds[0]);
- sclose(sockfds[1]);
- failf(conn->data, "Could not fork. errno %d: %s",
- error, Curl_strerror(conn, error));
- goto done;
- }
- else if(!child_pid) {
- /*
- * child process
- */
-
- sclose(sockfds[0]);
-
- if(dup2(sockfds[1], STDIN_FILENO) == -1) {
- error = ERRNO;
- failf(conn->data, "Could not redirect child stdin. errno %d: %s",
- error, Curl_strerror(conn, error));
- exit(1);
- }
-
- if(dup2(sockfds[1], STDOUT_FILENO) == -1) {
- error = ERRNO;
- failf(conn->data, "Could not redirect child stdout. errno %d: %s",
- error, Curl_strerror(conn, error));
- exit(1);
- }
-
- if(domain)
- execl(ntlm_auth, ntlm_auth,
- "--helper-protocol", "ntlmssp-client-1",
- "--use-cached-creds",
- "--username", username,
- "--domain", domain,
- NULL);
- else
- execl(ntlm_auth, ntlm_auth,
- "--helper-protocol", "ntlmssp-client-1",
- "--use-cached-creds",
- "--username", username,
- NULL);
-
- error = ERRNO;
- sclose(sockfds[1]);
- failf(conn->data, "Could not execl(). errno %d: %s",
- error, Curl_strerror(conn, error));
- exit(1);
- }
-
- sclose(sockfds[1]);
- conn->ntlm_auth_hlpr_socket = sockfds[0];
- conn->ntlm_auth_hlpr_pid = child_pid;
- Curl_safefree(domain);
- Curl_safefree(ntlm_auth_alloc);
- return CURLE_OK;
-
-done:
- Curl_safefree(domain);
- Curl_safefree(ntlm_auth_alloc);
- return CURLE_REMOTE_ACCESS_DENIED;
-}
-
-static CURLcode sso_ntlm_response(struct connectdata *conn,
- const char *input, curlntlm state)
-{
- ssize_t size;
- char buf[200]; /* enough, type 1, 3 message length is less then 200 */
- char *tmpbuf = buf;
- size_t len_in = strlen(input), len_out = sizeof(buf);
-
- while(len_in > 0) {
- ssize_t written = swrite(conn->ntlm_auth_hlpr_socket, input, len_in);
- if(written == -1) {
- /* Interrupted by a signal, retry it */
- if(errno == EINTR)
- continue;
- /* write failed if other errors happen */
- goto done;
- }
- input += written;
- len_in -= written;
- }
- /* Read one line */
- while(len_out > 0) {
- size = sread(conn->ntlm_auth_hlpr_socket, tmpbuf, len_out);
- if(size == -1) {
- if(errno == EINTR)
- continue;
- goto done;
- }
- else if(size == 0)
- goto done;
- else if(tmpbuf[size - 1] == '\n') {
- tmpbuf[size - 1] = '\0';
- goto wrfinish;
- }
- tmpbuf += size;
- len_out -= size;
- }
- goto done;
-wrfinish:
- /* Samba/winbind installed but not configured */
- if(state == NTLMSTATE_TYPE1 &&
- size == 3 &&
- buf[0] == 'P' && buf[1] == 'W')
- return CURLE_REMOTE_ACCESS_DENIED;
- /* invalid response */
- if(size < 4)
- goto done;
- if(state == NTLMSTATE_TYPE1 &&
- (buf[0]!='Y' || buf[1]!='R' || buf[2]!=' '))
- goto done;
- if(state == NTLMSTATE_TYPE2 &&
- (buf[0]!='K' || buf[1]!='K' || buf[2]!=' ') &&
- (buf[0]!='A' || buf[1]!='F' || buf[2]!=' '))
- goto done;
-
- conn->response_header = aprintf("NTLM %.*s", size - 4, buf + 3);
- return CURLE_OK;
-done:
- return CURLE_REMOTE_ACCESS_DENIED;
-}
-
-/*
- * This is for creating ntlm header output by delegating challenge/response
- * to a Samba's daemon helper ntlm_auth
- */
-CURLcode Curl_output_ntlm_sso(struct connectdata *conn,
- bool proxy)
-{
- /* point to the address of the pointer that holds the string to sent to the
- server, which is for a plain host or for a HTTP proxy */
- char **allocuserpwd;
- /* point to the name and password for this */
- const char *userp;
- /* point to the correct struct with this */
- struct ntlmdata *ntlm;
- struct auth *authp;
-
- CURLcode res = CURLE_OK;
- char *input;
-
- DEBUGASSERT(conn);
- DEBUGASSERT(conn->data);
-
- if(proxy) {
- allocuserpwd = &conn->allocptr.proxyuserpwd;
- userp = conn->proxyuser;
- ntlm = &conn->proxyntlm;
- authp = &conn->data->state.authproxy;
- }
- else {
- allocuserpwd = &conn->allocptr.userpwd;
- userp = conn->user;
- ntlm = &conn->ntlm;
- authp = &conn->data->state.authhost;
- }
- authp->done = FALSE;
-
- /* not set means empty */
- if(!userp)
- userp="";
-
- switch(ntlm->state) {
- case NTLMSTATE_TYPE1:
- default:
- /* Use Samba's 'winbind' daemon to support NTLM single-sign-on,
- * by delegating the NTLM challenge/response protocal to a helper
- * in ntlm_auth.
- * http://devel.squid-cache.org/ntlm/squid_helper_protocol.html
- * http://www.samba.org/samba/docs/man/manpages-3/winbindd.8.html
- * http://www.samba.org/samba/docs/man/manpages-3/ntlm_auth.1.html
- * Preprocessor symbol 'WINBIND_NTLM_AUTH_ENABLED' is defined when
- * this feature is enabled and 'WINBIND_NTLM_AUTH_FILE' symbol holds
- * absolute filename of ntlm_auth helper.
- * If NTLM single-sign-on fails, go back to original request
- * handling process.
- */
- /* Create communication with ntlm_auth */
- res = sso_ntlm_initiate(conn, userp);
- if(res)
- return res;
- res = sso_ntlm_response(conn, "YR\n", ntlm->state);
- if(res)
- return res;
-
- Curl_safefree(*allocuserpwd);
- *allocuserpwd = aprintf("%sAuthorization: %s\r\n",
- proxy ? "Proxy-" : "",
- conn->response_header);
- DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd));
- Curl_safefree(conn->response_header);
- conn->response_header = NULL;
- break;
- case NTLMSTATE_TYPE2:
- input = aprintf("TT %s", conn->challenge_header);
- if(!input)
- return CURLE_OUT_OF_MEMORY;
- res = sso_ntlm_response(conn,
- input,
- ntlm->state);
- free(input);
- input = NULL;
- if(res)
- return res;
-
- Curl_safefree(*allocuserpwd);
- *allocuserpwd = aprintf("%sAuthorization: %s\r\n",
- proxy ? "Proxy-" : "",
- conn->response_header);
- DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd));
- ntlm->state = NTLMSTATE_TYPE3; /* we sent a type-3 */
- authp->done = TRUE;
- sso_ntlm_close(conn);
- break;
- case NTLMSTATE_TYPE3:
- /* connection is already authenticated,
- * don't send a header in future requests */
- if(*allocuserpwd) {
- free(*allocuserpwd);
- *allocuserpwd=NULL;
- }
- authp->done = TRUE;
- break;
- }
-
- return CURLE_OK;
-}
-#endif /* WINBIND_NTLM_AUTH_ENABLED */
-
/*
* This is for creating ntlm header output
*/
-CURLcode Curl_output_ntlm(struct connectdata *conn,
- bool proxy)
+CURLcode Curl_output_ntlm(struct connectdata *conn, bool proxy)
{
- size_t size;
char *base64 = NULL;
- unsigned char ntlmbuf[NTLM_BUFSIZE];
- CURLcode res;
+ size_t len = 0;
+ CURLcode result;
- /* point to the address of the pointer that holds the string to sent to the
+ /* point to the address of the pointer that holds the string to send to the
server, which is for a plain host or for a HTTP proxy */
char **allocuserpwd;
struct ntlmdata *ntlm;
struct auth *authp;
- struct SessionHandle *data;
-
DEBUGASSERT(conn);
DEBUGASSERT(conn->data);
- data = conn->data;
-
-#ifdef USE_NSS
+#if defined(NTLM_NEEDS_NSS_INIT)
if(CURLE_OK != Curl_nss_force_init(conn->data))
return CURLE_OUT_OF_MEMORY;
#endif
if(proxy) {
allocuserpwd = &conn->allocptr.proxyuserpwd;
- userp = conn->proxyuser;
- passwdp = conn->proxypasswd;
+ userp = conn->http_proxy.user;
+ passwdp = conn->http_proxy.passwd;
ntlm = &conn->proxyntlm;
authp = &conn->data->state.authproxy;
}
switch(ntlm->state) {
case NTLMSTATE_TYPE1:
default: /* for the weird cases we (re)start here */
-
/* Create a type-1 message */
+ result = Curl_auth_create_ntlm_type1_message(conn->data, userp, passwdp,
+ ntlm, &base64, &len);
+ if(result)
+ return result;
- res = Curl_ntlm_create_type1_message(userp, passwdp,
- ntlm, ntlmbuf, &size);
-
- if(CURLE_OK == res) {
- /* now size is the size of the base64 encoded package size */
- size = Curl_base64_encode(NULL, (char *)ntlmbuf, size, &base64);
-
- if(size > 0) {
- Curl_safefree(*allocuserpwd);
- *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
- proxy ? "Proxy-" : "",
- base64);
- DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd));
- free(base64);
- }
+ if(base64) {
+ free(*allocuserpwd);
+ *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
+ proxy ? "Proxy-" : "",
+ base64);
+ free(base64);
+ if(!*allocuserpwd)
+ return CURLE_OUT_OF_MEMORY;
+
+ DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd));
}
- else
- return CURLE_OUT_OF_MEMORY; /* FIX TODO */
-
break;
case NTLMSTATE_TYPE2:
/* We already received the type-2 message, create a type-3 message */
+ result = Curl_auth_create_ntlm_type3_message(conn->data, userp, passwdp,
+ ntlm, &base64, &len);
+ if(result)
+ return result;
- res = Curl_ntlm_create_type3_message(conn->data, userp, passwdp,
- ntlm, ntlmbuf, &size);
+ if(base64) {
+ free(*allocuserpwd);
+ *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
+ proxy ? "Proxy-" : "",
+ base64);
+ free(base64);
+ if(!*allocuserpwd)
+ return CURLE_OUT_OF_MEMORY;
- if(CURLE_OK == res) {
- /* convert the binary blob into base64 */
- size = Curl_base64_encode(NULL, (char *)ntlmbuf, size, &base64);
+ DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd));
- if(size > 0) {
- Curl_safefree(*allocuserpwd);
- *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
- proxy ? "Proxy-" : "",
- base64);
- DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd));
- free(base64);
- }
+ ntlm->state = NTLMSTATE_TYPE3; /* we send a type-3 */
+ authp->done = TRUE;
}
- else
- return CURLE_OUT_OF_MEMORY; /* FIX TODO */
-
- ntlm->state = NTLMSTATE_TYPE3; /* we sent a type-3 */
- authp->done = TRUE;
-
break;
case NTLMSTATE_TYPE3:
/* connection is already authenticated,
* don't send a header in future requests */
- if(*allocuserpwd) {
- free(*allocuserpwd);
- *allocuserpwd = NULL;
- }
+ ntlm->state = NTLMSTATE_LAST;
+ /* fall-through */
+ case NTLMSTATE_LAST:
+ Curl_safefree(*allocuserpwd);
authp->done = TRUE;
break;
}
void Curl_http_ntlm_cleanup(struct connectdata *conn)
{
-#ifdef USE_WINDOWS_SSPI
- Curl_ntlm_sspi_cleanup(&conn->ntlm);
- Curl_ntlm_sspi_cleanup(&conn->proxyntlm);
-#elif defined(WINBIND_NTLM_AUTH_ENABLED)
- sso_ntlm_close(conn);
-#else
- (void)conn;
+ Curl_auth_ntlm_cleanup(&conn->ntlm);
+ Curl_auth_ntlm_cleanup(&conn->proxyntlm);
+
+#if defined(NTLM_WB_ENABLED)
+ Curl_ntlm_wb_cleanup(conn);
#endif
}
-#endif /* USE_NTLM */
-#endif /* !CURL_DISABLE_HTTP */
+#endif /* !CURL_DISABLE_HTTP && USE_NTLM */
projects / platform / upstream / curl.git / blobdiff