* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 2009, Markus Moeller, <markus_moeller@compuserve.com>
+ * Copyright (C) 2009, 2011, Markus Moeller, <markus_moeller@compuserve.com>
+ * Copyright (C) 2012 - 2016, 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"
-#ifndef CURL_DISABLE_PROXY
-
-#ifdef HAVE_GSSAPI
-#ifdef HAVE_OLD_GSSMIT
-#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
-#endif
-#ifndef gss_nt_service_name
-#define gss_nt_service_name GSS_C_NT_HOSTBASED_SERVICE
-#endif
-#include <string.h>
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
+#if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_PROXY)
+#include "curl_gssapi.h"
#include "urldata.h"
#include "sendf.h"
#include "connect.h"
#include "timeval.h"
#include "socks.h"
+#include "warnless.h"
-static gss_ctx_id_t gss_context = GSS_C_NO_CONTEXT;
-
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
#include "curl_memory.h"
-/* The last #include file should be: */
#include "memdebug.h"
+static gss_ctx_id_t gss_context = GSS_C_NO_CONTEXT;
+
/*
- * Helper gssapi error functions.
+ * Helper GSS-API error functions.
*/
-static int check_gss_err(struct SessionHandle *data,
+static int check_gss_err(struct Curl_easy *data,
OM_uint32 major_status,
OM_uint32 minor_status,
const char* function)
{
if(GSS_ERROR(major_status)) {
- OM_uint32 maj_stat,min_stat;
+ OM_uint32 maj_stat, min_stat;
OM_uint32 msg_ctx = 0;
gss_buffer_desc status_string;
char buf[1024];
GSS_C_NULL_OID,
&msg_ctx, &status_string);
if(maj_stat == GSS_S_COMPLETE) {
- if(sizeof(buf) > len + status_string.length) {
+ if(sizeof(buf) > len + status_string.length)
strcpy(buf+len, (char*) status_string.value);
- len += status_string.length;
- }
gss_release_buffer(&min_stat, &status_string);
break;
}
gss_release_buffer(&min_stat, &status_string);
}
- failf(data, "GSSAPI error: %s failed:\n%s\n", function, buf);
- return(1);
+ failf(data, "GSS-API error: %s failed:\n%s", function, buf);
+ return 1;
}
- return(0);
+ return 0;
}
CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
struct connectdata *conn)
{
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
curl_socket_t sock = conn->sock[sockindex];
CURLcode code;
ssize_t actualread;
ssize_t written;
int result;
- long timeout;
OM_uint32 gss_major_status, gss_minor_status, gss_status;
OM_uint32 gss_ret_flags;
int gss_conf_state, gss_enc;
gss_buffer_desc* gss_token = GSS_C_NO_BUFFER;
gss_name_t server = GSS_C_NO_NAME;
gss_name_t gss_client_name = GSS_C_NO_NAME;
- u_short us_length;
+ unsigned short us_length;
char *user=NULL;
- unsigned char socksreq[4]; /* room for gssapi exchange header only */
- char *serviceptr = data->set.str[STRING_SOCKS5_GSSAPI_SERVICE];
-
- /* get timeout */
- timeout = Curl_timeleft(conn, NULL, TRUE);
+ unsigned char socksreq[4]; /* room for GSS-API exchange header only */
+ const char *serviceptr = data->set.str[STRING_PROXY_SERVICE_NAME] ?
+ data->set.str[STRING_PROXY_SERVICE_NAME] : "rcmd";
- /* GSSAPI request looks like
+ /* GSS-API request looks like
* +----+------+-----+----------------+
* |VER | MTYP | LEN | TOKEN |
* +----+------+----------------------+
*/
/* prepare service name */
- if (strchr(serviceptr,'/')) {
+ if(strchr(serviceptr, '/')) {
service.value = malloc(strlen(serviceptr));
if(!service.value)
return CURLE_OUT_OF_MEMORY;
serviceptr, conn->proxy.name);
gss_major_status = gss_import_name(&gss_minor_status, &service,
- gss_nt_service_name, &server);
+ GSS_C_NT_HOSTBASED_SERVICE, &server);
}
gss_release_buffer(&gss_status, &service); /* clear allocated memory */
- if(check_gss_err(data,gss_major_status,
- gss_minor_status,"gss_import_name()")) {
+ if(check_gss_err(data, gss_major_status,
+ gss_minor_status, "gss_import_name()")) {
failf(data, "Failed to create service name.");
gss_release_name(&gss_status, &server);
return CURLE_COULDNT_CONNECT;
/* As long as we need to keep sending some context info, and there's no */
/* errors, keep sending it... */
for(;;) {
- gss_major_status = gss_init_sec_context(&gss_minor_status,
- GSS_C_NO_CREDENTIAL,
- &gss_context, server,
- GSS_C_NULL_OID,
- GSS_C_MUTUAL_FLAG |
- GSS_C_REPLAY_FLAG,
- 0,
- NULL,
- gss_token,
- NULL,
- &gss_send_token,
- &gss_ret_flags,
- NULL);
+ gss_major_status = Curl_gss_init_sec_context(data,
+ &gss_minor_status,
+ &gss_context,
+ server,
+ &Curl_krb5_mech_oid,
+ NULL,
+ gss_token,
+ &gss_send_token,
+ TRUE,
+ &gss_ret_flags);
if(gss_token != GSS_C_NO_BUFFER)
gss_release_buffer(&gss_status, &gss_recv_token);
- if(check_gss_err(data,gss_major_status,
- gss_minor_status,"gss_init_sec_context")) {
+ if(check_gss_err(data, gss_major_status,
+ gss_minor_status, "gss_init_sec_context")) {
gss_release_name(&gss_status, &server);
gss_release_buffer(&gss_status, &gss_recv_token);
gss_release_buffer(&gss_status, &gss_send_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
- failf(data, "Failed to initial GSSAPI token.");
+ failf(data, "Failed to initial GSS-API token.");
return CURLE_COULDNT_CONNECT;
}
if(gss_send_token.length != 0) {
- socksreq[0] = 1; /* gssapi subnegotiation version */
+ socksreq[0] = 1; /* GSS-API subnegotiation version */
socksreq[1] = 1; /* authentication message type */
us_length = htons((short)gss_send_token.length);
- memcpy(socksreq+2,&us_length,sizeof(short));
+ memcpy(socksreq+2, &us_length, sizeof(short));
code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
- if((code != CURLE_OK) || (4 != written)) {
- failf(data, "Failed to send GSSAPI authentication request.");
+ if(code || (4 != written)) {
+ failf(data, "Failed to send GSS-API authentication request.");
gss_release_name(&gss_status, &server);
gss_release_buffer(&gss_status, &gss_recv_token);
gss_release_buffer(&gss_status, &gss_send_token);
code = Curl_write_plain(conn, sock, (char *)gss_send_token.value,
gss_send_token.length, &written);
- if((code != CURLE_OK) || ((ssize_t)gss_send_token.length != written)) {
- failf(data, "Failed to send GSSAPI authentication token.");
+ if(code || ((ssize_t)gss_send_token.length != written)) {
+ failf(data, "Failed to send GSS-API authentication token.");
gss_release_name(&gss_status, &server);
gss_release_buffer(&gss_status, &gss_recv_token);
gss_release_buffer(&gss_status, &gss_send_token);
/* analyse response */
- /* GSSAPI response looks like
+ /* GSS-API response looks like
* +----+------+-----+----------------+
* |VER | MTYP | LEN | TOKEN |
* +----+------+----------------------+
* +----+------+-----+----------------+
*/
- result=Curl_blockread_all(conn, sock, (char *)socksreq, 4,
- &actualread, timeout);
- if(result != CURLE_OK || actualread != 4) {
- failf(data, "Failed to receive GSSAPI authentication response.");
+ result=Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
+ if(result || (actualread != 4)) {
+ failf(data, "Failed to receive GSS-API authentication response.");
gss_release_name(&gss_status, &server);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
}
if(socksreq[1] != 1) { /* status / messgae type */
- failf(data, "Invalid GSSAPI authentication response type (%d %d).",
+ failf(data, "Invalid GSS-API authentication response type (%d %d).",
socksreq[0], socksreq[1]);
gss_release_name(&gss_status, &server);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
gss_recv_token.value=malloc(us_length);
if(!gss_recv_token.value) {
failf(data,
- "Could not allocate memory for GSSAPI authentication "
+ "Could not allocate memory for GSS-API authentication "
"response token.");
gss_release_name(&gss_status, &server);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
}
result=Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
- gss_recv_token.length,
- &actualread, timeout);
+ gss_recv_token.length, &actualread);
- if(result != CURLE_OK || actualread != us_length) {
- failf(data, "Failed to receive GSSAPI authentication token.");
+ if(result || (actualread != us_length)) {
+ failf(data, "Failed to receive GSS-API authentication token.");
gss_release_name(&gss_status, &server);
gss_release_buffer(&gss_status, &gss_recv_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
gss_major_status = gss_inquire_context (&gss_minor_status, gss_context,
&gss_client_name, NULL, NULL, NULL,
NULL, NULL, NULL);
- if(check_gss_err(data,gss_major_status,
- gss_minor_status,"gss_inquire_context")) {
+ if(check_gss_err(data, gss_major_status,
+ gss_minor_status, "gss_inquire_context")) {
gss_delete_sec_context(&gss_status, &gss_context, NULL);
gss_release_name(&gss_status, &gss_client_name);
failf(data, "Failed to determine user name.");
}
gss_major_status = gss_display_name(&gss_minor_status, gss_client_name,
&gss_send_token, NULL);
- if(check_gss_err(data,gss_major_status,
- gss_minor_status,"gss_display_name")) {
+ if(check_gss_err(data, gss_major_status,
+ gss_minor_status, "gss_display_name")) {
gss_delete_sec_context(&gss_status, &gss_context, NULL);
gss_release_name(&gss_status, &gss_client_name);
gss_release_buffer(&gss_status, &gss_send_token);
user[gss_send_token.length] = '\0';
gss_release_name(&gss_status, &gss_client_name);
gss_release_buffer(&gss_status, &gss_send_token);
- infof(data, "SOCKS5 server authencticated user %s with gssapi.\n",user);
+ infof(data, "SOCKS5 server authencticated user %s with GSS-API.\n",user);
free(user);
user=NULL;
/* Do encryption */
- socksreq[0] = 1; /* gssapi subnegotiation version */
+ socksreq[0] = 1; /* GSS-API subnegotiation version */
socksreq[1] = 2; /* encryption message type */
gss_enc = 0; /* no data protection */
else if(gss_ret_flags & GSS_C_INTEG_FLAG)
gss_enc = 1;
- infof(data, "SOCKS5 server supports gssapi %s data protection.\n",
+ infof(data, "SOCKS5 server supports GSS-API %s data protection.\n",
(gss_enc==0)?"no":((gss_enc==1)?"integrity":"confidentiality"));
/* force for the moment to no data protection */
gss_enc = 0;
*/
if(data->set.socks5_gssapi_nec) {
us_length = htons((short)1);
- memcpy(socksreq+2,&us_length,sizeof(short));
+ memcpy(socksreq+2, &us_length, sizeof(short));
}
else {
gss_send_token.length = 1;
GSS_C_QOP_DEFAULT, &gss_send_token,
&gss_conf_state, &gss_w_token);
- if(check_gss_err(data,gss_major_status,gss_minor_status,"gss_wrap")) {
+ if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_wrap")) {
gss_release_buffer(&gss_status, &gss_send_token);
gss_release_buffer(&gss_status, &gss_w_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
- failf(data, "Failed to wrap GSSAPI encryption value into token.");
+ failf(data, "Failed to wrap GSS-API encryption value into token.");
return CURLE_COULDNT_CONNECT;
}
gss_release_buffer(&gss_status, &gss_send_token);
us_length = htons((short)gss_w_token.length);
- memcpy(socksreq+2,&us_length,sizeof(short));
+ memcpy(socksreq+2, &us_length, sizeof(short));
}
code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
- if((code != CURLE_OK) || (4 != written)) {
- failf(data, "Failed to send GSSAPI encryption request.");
+ if(code || (4 != written)) {
+ failf(data, "Failed to send GSS-API encryption request.");
gss_release_buffer(&gss_status, &gss_w_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
if(data->set.socks5_gssapi_nec) {
memcpy(socksreq, &gss_enc, 1);
code = Curl_write_plain(conn, sock, socksreq, 1, &written);
- if((code != CURLE_OK) || ( 1 != written)) {
- failf(data, "Failed to send GSSAPI encryption type.");
+ if(code || ( 1 != written)) {
+ failf(data, "Failed to send GSS-API encryption type.");
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
}
- } else {
+ }
+ else {
code = Curl_write_plain(conn, sock, (char *)gss_w_token.value,
gss_w_token.length, &written);
- if((code != CURLE_OK) || ((ssize_t)gss_w_token.length != written)) {
- failf(data, "Failed to send GSSAPI encryption type.");
+ if(code || ((ssize_t)gss_w_token.length != written)) {
+ failf(data, "Failed to send GSS-API encryption type.");
gss_release_buffer(&gss_status, &gss_w_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
gss_release_buffer(&gss_status, &gss_w_token);
}
- result=Curl_blockread_all(conn, sock, (char *)socksreq, 4,
- &actualread, timeout);
- if(result != CURLE_OK || actualread != 4) {
- failf(data, "Failed to receive GSSAPI encryption response.");
+ result=Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
+ if(result || (actualread != 4)) {
+ failf(data, "Failed to receive GSS-API encryption response.");
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
}
}
if(socksreq[1] != 2) { /* status / messgae type */
- failf(data, "Invalid GSSAPI encryption response type (%d %d).",
+ failf(data, "Invalid GSS-API encryption response type (%d %d).",
socksreq[0], socksreq[1]);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
return CURLE_OUT_OF_MEMORY;
}
result=Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
- gss_recv_token.length,
- &actualread, timeout);
+ gss_recv_token.length, &actualread);
- if(result != CURLE_OK || actualread != us_length) {
- failf(data, "Failed to receive GSSAPI encryptrion type.");
+ if(result || (actualread != us_length)) {
+ failf(data, "Failed to receive GSS-API encryptrion type.");
gss_release_buffer(&gss_status, &gss_recv_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
&gss_recv_token, &gss_w_token,
0, GSS_C_QOP_DEFAULT);
- if(check_gss_err(data,gss_major_status,gss_minor_status,"gss_unwrap")) {
+ if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_unwrap")) {
gss_release_buffer(&gss_status, &gss_recv_token);
gss_release_buffer(&gss_status, &gss_w_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
- failf(data, "Failed to unwrap GSSAPI encryption value into token.");
+ failf(data, "Failed to unwrap GSS-API encryption value into token.");
return CURLE_COULDNT_CONNECT;
}
gss_release_buffer(&gss_status, &gss_recv_token);
if(gss_w_token.length != 1) {
- failf(data, "Invalid GSSAPI encryption response length (%d).",
+ failf(data, "Invalid GSS-API encryption response length (%d).",
gss_w_token.length);
gss_release_buffer(&gss_status, &gss_w_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
}
- memcpy(socksreq,gss_w_token.value,gss_w_token.length);
+ memcpy(socksreq, gss_w_token.value, gss_w_token.length);
gss_release_buffer(&gss_status, &gss_w_token);
}
else {
if(gss_recv_token.length != 1) {
- failf(data, "Invalid GSSAPI encryption response length (%d).",
+ failf(data, "Invalid GSS-API encryption response length (%d).",
gss_recv_token.length);
gss_release_buffer(&gss_status, &gss_recv_token);
gss_delete_sec_context(&gss_status, &gss_context, NULL);
return CURLE_COULDNT_CONNECT;
}
- memcpy(socksreq,gss_recv_token.value,gss_recv_token.length);
+ memcpy(socksreq, gss_recv_token.value, gss_recv_token.length);
gss_release_buffer(&gss_status, &gss_recv_token);
}
infof(data, "SOCKS5 access with%s protection granted.\n",
- (socksreq[0]==0)?"out gssapi data":
- ((socksreq[0]==1)?" gssapi integrity":" gssapi confidentiality"));
+ (socksreq[0]==0)?"out GSS-API data":
+ ((socksreq[0]==1)?" GSS-API integrity":" GSS-API confidentiality"));
conn->socks5_gssapi_enctype = socksreq[0];
if(socksreq[0] == 0)
return CURLE_OK;
}
-#endif
-#endif /* CURL_DISABLE_PROXY */
+#endif /* HAVE_GSSAPI && !CURL_DISABLE_PROXY */
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