1 | /*************************************************************************** |
2 | * _ _ ____ _ |
3 | * Project ___| | | | _ \| | |
4 | * / __| | | | |_) | | |
5 | * | (__| |_| | _ <| |___ |
6 | * \___|\___/|_| \_\_____| |
7 | * |
8 | * Copyright (C) 2012 - 2022, Daniel Stenberg, <[email protected]>, et al. |
9 | * Copyright (C) 2012, Markus Moeller, <[email protected]> |
10 | * |
11 | * This software is licensed as described in the file COPYING, which |
12 | * you should have received as part of this distribution. The terms |
13 | * are also available at https://curl.se/docs/copyright.html. |
14 | * |
15 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell |
16 | * copies of the Software, and permit persons to whom the Software is |
17 | * furnished to do so, under the terms of the COPYING file. |
18 | * |
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
20 | * KIND, either express or implied. |
21 | * |
22 | * SPDX-License-Identifier: curl |
23 | * |
24 | ***************************************************************************/ |
25 | |
26 | #include "curl_setup.h" |
27 | |
28 | #if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_PROXY) |
29 | |
30 | #include "curl_gssapi.h" |
31 | #include "urldata.h" |
32 | #include "sendf.h" |
33 | #include "connect.h" |
34 | #include "timeval.h" |
35 | #include "socks.h" |
36 | #include "warnless.h" |
37 | |
38 | /* The last 3 #include files should be in this order */ |
39 | #include "curl_printf.h" |
40 | #include "curl_memory.h" |
41 | #include "memdebug.h" |
42 | |
43 | static gss_ctx_id_t gss_context = GSS_C_NO_CONTEXT; |
44 | |
45 | /* |
46 | * Helper GSS-API error functions. |
47 | */ |
48 | static int check_gss_err(struct Curl_easy *data, |
49 | OM_uint32 major_status, |
50 | OM_uint32 minor_status, |
51 | const char *function) |
52 | { |
53 | if(GSS_ERROR(major_status)) { |
54 | OM_uint32 maj_stat, min_stat; |
55 | OM_uint32 msg_ctx = 0; |
56 | gss_buffer_desc status_string = GSS_C_EMPTY_BUFFER; |
57 | char buf[1024]; |
58 | size_t len; |
59 | |
60 | len = 0; |
61 | msg_ctx = 0; |
62 | while(!msg_ctx) { |
63 | /* convert major status code (GSS-API error) to text */ |
64 | maj_stat = gss_display_status(&min_stat, major_status, |
65 | GSS_C_GSS_CODE, |
66 | GSS_C_NULL_OID, |
67 | &msg_ctx, &status_string); |
68 | if(maj_stat == GSS_S_COMPLETE) { |
69 | if(sizeof(buf) > len + status_string.length + 1) { |
70 | strcpy(buf + len, (char *) status_string.value); |
71 | len += status_string.length; |
72 | } |
73 | gss_release_buffer(&min_stat, &status_string); |
74 | break; |
75 | } |
76 | gss_release_buffer(&min_stat, &status_string); |
77 | } |
78 | if(sizeof(buf) > len + 3) { |
79 | strcpy(buf + len, ".\n" ); |
80 | len += 2; |
81 | } |
82 | msg_ctx = 0; |
83 | while(!msg_ctx) { |
84 | /* convert minor status code (underlying routine error) to text */ |
85 | maj_stat = gss_display_status(&min_stat, minor_status, |
86 | GSS_C_MECH_CODE, |
87 | GSS_C_NULL_OID, |
88 | &msg_ctx, &status_string); |
89 | if(maj_stat == GSS_S_COMPLETE) { |
90 | if(sizeof(buf) > len + status_string.length) |
91 | strcpy(buf + len, (char *) status_string.value); |
92 | gss_release_buffer(&min_stat, &status_string); |
93 | break; |
94 | } |
95 | gss_release_buffer(&min_stat, &status_string); |
96 | } |
97 | failf(data, "GSS-API error: %s failed: %s" , function, buf); |
98 | return 1; |
99 | } |
100 | |
101 | return 0; |
102 | } |
103 | |
104 | CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex, |
105 | struct Curl_easy *data) |
106 | { |
107 | struct connectdata *conn = data->conn; |
108 | curl_socket_t sock = conn->sock[sockindex]; |
109 | CURLcode code; |
110 | ssize_t actualread; |
111 | ssize_t written; |
112 | int result; |
113 | OM_uint32 gss_major_status, gss_minor_status, gss_status; |
114 | OM_uint32 gss_ret_flags; |
115 | int gss_conf_state, gss_enc; |
116 | gss_buffer_desc service = GSS_C_EMPTY_BUFFER; |
117 | gss_buffer_desc gss_send_token = GSS_C_EMPTY_BUFFER; |
118 | gss_buffer_desc gss_recv_token = GSS_C_EMPTY_BUFFER; |
119 | gss_buffer_desc gss_w_token = GSS_C_EMPTY_BUFFER; |
120 | gss_buffer_desc *gss_token = GSS_C_NO_BUFFER; |
121 | gss_name_t server = GSS_C_NO_NAME; |
122 | gss_name_t gss_client_name = GSS_C_NO_NAME; |
123 | unsigned short us_length; |
124 | char *user = NULL; |
125 | unsigned char socksreq[4]; /* room for GSS-API exchange header only */ |
126 | const char *serviceptr = data->set.str[STRING_PROXY_SERVICE_NAME] ? |
127 | data->set.str[STRING_PROXY_SERVICE_NAME] : "rcmd" ; |
128 | const size_t serviceptr_length = strlen(serviceptr); |
129 | |
130 | /* GSS-API request looks like |
131 | * +----+------+-----+----------------+ |
132 | * |VER | MTYP | LEN | TOKEN | |
133 | * +----+------+----------------------+ |
134 | * | 1 | 1 | 2 | up to 2^16 - 1 | |
135 | * +----+------+-----+----------------+ |
136 | */ |
137 | |
138 | /* prepare service name */ |
139 | if(strchr(serviceptr, '/')) { |
140 | service.length = serviceptr_length; |
141 | service.value = malloc(service.length); |
142 | if(!service.value) |
143 | return CURLE_OUT_OF_MEMORY; |
144 | memcpy(service.value, serviceptr, service.length); |
145 | |
146 | gss_major_status = gss_import_name(&gss_minor_status, &service, |
147 | (gss_OID) GSS_C_NULL_OID, &server); |
148 | } |
149 | else { |
150 | service.value = malloc(serviceptr_length + |
151 | strlen(conn->socks_proxy.host.name) + 2); |
152 | if(!service.value) |
153 | return CURLE_OUT_OF_MEMORY; |
154 | service.length = serviceptr_length + |
155 | strlen(conn->socks_proxy.host.name) + 1; |
156 | msnprintf(service.value, service.length + 1, "%s@%s" , |
157 | serviceptr, conn->socks_proxy.host.name); |
158 | |
159 | gss_major_status = gss_import_name(&gss_minor_status, &service, |
160 | GSS_C_NT_HOSTBASED_SERVICE, &server); |
161 | } |
162 | |
163 | gss_release_buffer(&gss_status, &service); /* clear allocated memory */ |
164 | |
165 | if(check_gss_err(data, gss_major_status, |
166 | gss_minor_status, "gss_import_name()" )) { |
167 | failf(data, "Failed to create service name." ); |
168 | gss_release_name(&gss_status, &server); |
169 | return CURLE_COULDNT_CONNECT; |
170 | } |
171 | |
172 | (void)curlx_nonblock(sock, FALSE); |
173 | |
174 | /* As long as we need to keep sending some context info, and there's no */ |
175 | /* errors, keep sending it... */ |
176 | for(;;) { |
177 | gss_major_status = Curl_gss_init_sec_context(data, |
178 | &gss_minor_status, |
179 | &gss_context, |
180 | server, |
181 | &Curl_krb5_mech_oid, |
182 | NULL, |
183 | gss_token, |
184 | &gss_send_token, |
185 | TRUE, |
186 | &gss_ret_flags); |
187 | |
188 | if(gss_token != GSS_C_NO_BUFFER) |
189 | gss_release_buffer(&gss_status, &gss_recv_token); |
190 | if(check_gss_err(data, gss_major_status, |
191 | gss_minor_status, "gss_init_sec_context" )) { |
192 | gss_release_name(&gss_status, &server); |
193 | gss_release_buffer(&gss_status, &gss_recv_token); |
194 | gss_release_buffer(&gss_status, &gss_send_token); |
195 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
196 | failf(data, "Failed to initial GSS-API token." ); |
197 | return CURLE_COULDNT_CONNECT; |
198 | } |
199 | |
200 | if(gss_send_token.length) { |
201 | socksreq[0] = 1; /* GSS-API subnegotiation version */ |
202 | socksreq[1] = 1; /* authentication message type */ |
203 | us_length = htons((short)gss_send_token.length); |
204 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
205 | |
206 | code = Curl_write_plain(data, sock, (char *)socksreq, 4, &written); |
207 | if(code || (4 != written)) { |
208 | failf(data, "Failed to send GSS-API authentication request." ); |
209 | gss_release_name(&gss_status, &server); |
210 | gss_release_buffer(&gss_status, &gss_recv_token); |
211 | gss_release_buffer(&gss_status, &gss_send_token); |
212 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
213 | return CURLE_COULDNT_CONNECT; |
214 | } |
215 | |
216 | code = Curl_write_plain(data, sock, (char *)gss_send_token.value, |
217 | gss_send_token.length, &written); |
218 | |
219 | if(code || ((ssize_t)gss_send_token.length != written)) { |
220 | failf(data, "Failed to send GSS-API authentication token." ); |
221 | gss_release_name(&gss_status, &server); |
222 | gss_release_buffer(&gss_status, &gss_recv_token); |
223 | gss_release_buffer(&gss_status, &gss_send_token); |
224 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
225 | return CURLE_COULDNT_CONNECT; |
226 | } |
227 | |
228 | } |
229 | |
230 | gss_release_buffer(&gss_status, &gss_send_token); |
231 | gss_release_buffer(&gss_status, &gss_recv_token); |
232 | if(gss_major_status != GSS_S_CONTINUE_NEEDED) |
233 | break; |
234 | |
235 | /* analyse response */ |
236 | |
237 | /* GSS-API response looks like |
238 | * +----+------+-----+----------------+ |
239 | * |VER | MTYP | LEN | TOKEN | |
240 | * +----+------+----------------------+ |
241 | * | 1 | 1 | 2 | up to 2^16 - 1 | |
242 | * +----+------+-----+----------------+ |
243 | */ |
244 | |
245 | result = Curl_blockread_all(data, sock, (char *)socksreq, 4, &actualread); |
246 | if(result || (actualread != 4)) { |
247 | failf(data, "Failed to receive GSS-API authentication response." ); |
248 | gss_release_name(&gss_status, &server); |
249 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
250 | return CURLE_COULDNT_CONNECT; |
251 | } |
252 | |
253 | /* ignore the first (VER) byte */ |
254 | if(socksreq[1] == 255) { /* status / message type */ |
255 | failf(data, "User was rejected by the SOCKS5 server (%d %d)." , |
256 | socksreq[0], socksreq[1]); |
257 | gss_release_name(&gss_status, &server); |
258 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
259 | return CURLE_COULDNT_CONNECT; |
260 | } |
261 | |
262 | if(socksreq[1] != 1) { /* status / message type */ |
263 | failf(data, "Invalid GSS-API authentication response type (%d %d)." , |
264 | socksreq[0], socksreq[1]); |
265 | gss_release_name(&gss_status, &server); |
266 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
267 | return CURLE_COULDNT_CONNECT; |
268 | } |
269 | |
270 | memcpy(&us_length, socksreq + 2, sizeof(short)); |
271 | us_length = ntohs(us_length); |
272 | |
273 | gss_recv_token.length = us_length; |
274 | gss_recv_token.value = malloc(us_length); |
275 | if(!gss_recv_token.value) { |
276 | failf(data, |
277 | "Could not allocate memory for GSS-API authentication " |
278 | "response token." ); |
279 | gss_release_name(&gss_status, &server); |
280 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
281 | return CURLE_OUT_OF_MEMORY; |
282 | } |
283 | |
284 | result = Curl_blockread_all(data, sock, (char *)gss_recv_token.value, |
285 | gss_recv_token.length, &actualread); |
286 | |
287 | if(result || (actualread != us_length)) { |
288 | failf(data, "Failed to receive GSS-API authentication token." ); |
289 | gss_release_name(&gss_status, &server); |
290 | gss_release_buffer(&gss_status, &gss_recv_token); |
291 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
292 | return CURLE_COULDNT_CONNECT; |
293 | } |
294 | |
295 | gss_token = &gss_recv_token; |
296 | } |
297 | |
298 | gss_release_name(&gss_status, &server); |
299 | |
300 | /* Everything is good so far, user was authenticated! */ |
301 | gss_major_status = gss_inquire_context(&gss_minor_status, gss_context, |
302 | &gss_client_name, NULL, NULL, NULL, |
303 | NULL, NULL, NULL); |
304 | if(check_gss_err(data, gss_major_status, |
305 | gss_minor_status, "gss_inquire_context" )) { |
306 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
307 | gss_release_name(&gss_status, &gss_client_name); |
308 | failf(data, "Failed to determine user name." ); |
309 | return CURLE_COULDNT_CONNECT; |
310 | } |
311 | gss_major_status = gss_display_name(&gss_minor_status, gss_client_name, |
312 | &gss_send_token, NULL); |
313 | if(check_gss_err(data, gss_major_status, |
314 | gss_minor_status, "gss_display_name" )) { |
315 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
316 | gss_release_name(&gss_status, &gss_client_name); |
317 | gss_release_buffer(&gss_status, &gss_send_token); |
318 | failf(data, "Failed to determine user name." ); |
319 | return CURLE_COULDNT_CONNECT; |
320 | } |
321 | user = malloc(gss_send_token.length + 1); |
322 | if(!user) { |
323 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
324 | gss_release_name(&gss_status, &gss_client_name); |
325 | gss_release_buffer(&gss_status, &gss_send_token); |
326 | return CURLE_OUT_OF_MEMORY; |
327 | } |
328 | |
329 | memcpy(user, gss_send_token.value, gss_send_token.length); |
330 | user[gss_send_token.length] = '\0'; |
331 | gss_release_name(&gss_status, &gss_client_name); |
332 | gss_release_buffer(&gss_status, &gss_send_token); |
333 | infof(data, "SOCKS5 server authenticated user %s with GSS-API." ,user); |
334 | free(user); |
335 | user = NULL; |
336 | |
337 | /* Do encryption */ |
338 | socksreq[0] = 1; /* GSS-API subnegotiation version */ |
339 | socksreq[1] = 2; /* encryption message type */ |
340 | |
341 | gss_enc = 0; /* no data protection */ |
342 | /* do confidentiality protection if supported */ |
343 | if(gss_ret_flags & GSS_C_CONF_FLAG) |
344 | gss_enc = 2; |
345 | /* else do integrity protection */ |
346 | else if(gss_ret_flags & GSS_C_INTEG_FLAG) |
347 | gss_enc = 1; |
348 | |
349 | infof(data, "SOCKS5 server supports GSS-API %s data protection." , |
350 | (gss_enc == 0)?"no" :((gss_enc==1)?"integrity" :"confidentiality" )); |
351 | /* force for the moment to no data protection */ |
352 | gss_enc = 0; |
353 | /* |
354 | * Sending the encryption type in clear seems wrong. It should be |
355 | * protected with gss_seal()/gss_wrap(). See RFC1961 extract below |
356 | * The NEC reference implementations on which this is based is |
357 | * therefore at fault |
358 | * |
359 | * +------+------+------+.......................+ |
360 | * + ver | mtyp | len | token | |
361 | * +------+------+------+.......................+ |
362 | * + 0x01 | 0x02 | 0x02 | up to 2^16 - 1 octets | |
363 | * +------+------+------+.......................+ |
364 | * |
365 | * Where: |
366 | * |
367 | * - "ver" is the protocol version number, here 1 to represent the |
368 | * first version of the SOCKS/GSS-API protocol |
369 | * |
370 | * - "mtyp" is the message type, here 2 to represent a protection |
371 | * -level negotiation message |
372 | * |
373 | * - "len" is the length of the "token" field in octets |
374 | * |
375 | * - "token" is the GSS-API encapsulated protection level |
376 | * |
377 | * The token is produced by encapsulating an octet containing the |
378 | * required protection level using gss_seal()/gss_wrap() with conf_req |
379 | * set to FALSE. The token is verified using gss_unseal()/ |
380 | * gss_unwrap(). |
381 | * |
382 | */ |
383 | if(data->set.socks5_gssapi_nec) { |
384 | us_length = htons((short)1); |
385 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
386 | } |
387 | else { |
388 | gss_send_token.length = 1; |
389 | gss_send_token.value = malloc(1); |
390 | if(!gss_send_token.value) { |
391 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
392 | return CURLE_OUT_OF_MEMORY; |
393 | } |
394 | memcpy(gss_send_token.value, &gss_enc, 1); |
395 | |
396 | gss_major_status = gss_wrap(&gss_minor_status, gss_context, 0, |
397 | GSS_C_QOP_DEFAULT, &gss_send_token, |
398 | &gss_conf_state, &gss_w_token); |
399 | |
400 | if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_wrap" )) { |
401 | gss_release_buffer(&gss_status, &gss_send_token); |
402 | gss_release_buffer(&gss_status, &gss_w_token); |
403 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
404 | failf(data, "Failed to wrap GSS-API encryption value into token." ); |
405 | return CURLE_COULDNT_CONNECT; |
406 | } |
407 | gss_release_buffer(&gss_status, &gss_send_token); |
408 | |
409 | us_length = htons((short)gss_w_token.length); |
410 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
411 | } |
412 | |
413 | code = Curl_write_plain(data, sock, (char *)socksreq, 4, &written); |
414 | if(code || (4 != written)) { |
415 | failf(data, "Failed to send GSS-API encryption request." ); |
416 | gss_release_buffer(&gss_status, &gss_w_token); |
417 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
418 | return CURLE_COULDNT_CONNECT; |
419 | } |
420 | |
421 | if(data->set.socks5_gssapi_nec) { |
422 | memcpy(socksreq, &gss_enc, 1); |
423 | code = Curl_write_plain(data, sock, socksreq, 1, &written); |
424 | if(code || ( 1 != written)) { |
425 | failf(data, "Failed to send GSS-API encryption type." ); |
426 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
427 | return CURLE_COULDNT_CONNECT; |
428 | } |
429 | } |
430 | else { |
431 | code = Curl_write_plain(data, sock, (char *)gss_w_token.value, |
432 | gss_w_token.length, &written); |
433 | if(code || ((ssize_t)gss_w_token.length != written)) { |
434 | failf(data, "Failed to send GSS-API encryption type." ); |
435 | gss_release_buffer(&gss_status, &gss_w_token); |
436 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
437 | return CURLE_COULDNT_CONNECT; |
438 | } |
439 | gss_release_buffer(&gss_status, &gss_w_token); |
440 | } |
441 | |
442 | result = Curl_blockread_all(data, sock, (char *)socksreq, 4, &actualread); |
443 | if(result || (actualread != 4)) { |
444 | failf(data, "Failed to receive GSS-API encryption response." ); |
445 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
446 | return CURLE_COULDNT_CONNECT; |
447 | } |
448 | |
449 | /* ignore the first (VER) byte */ |
450 | if(socksreq[1] == 255) { /* status / message type */ |
451 | failf(data, "User was rejected by the SOCKS5 server (%d %d)." , |
452 | socksreq[0], socksreq[1]); |
453 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
454 | return CURLE_COULDNT_CONNECT; |
455 | } |
456 | |
457 | if(socksreq[1] != 2) { /* status / message type */ |
458 | failf(data, "Invalid GSS-API encryption response type (%d %d)." , |
459 | socksreq[0], socksreq[1]); |
460 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
461 | return CURLE_COULDNT_CONNECT; |
462 | } |
463 | |
464 | memcpy(&us_length, socksreq + 2, sizeof(short)); |
465 | us_length = ntohs(us_length); |
466 | |
467 | gss_recv_token.length = us_length; |
468 | gss_recv_token.value = malloc(gss_recv_token.length); |
469 | if(!gss_recv_token.value) { |
470 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
471 | return CURLE_OUT_OF_MEMORY; |
472 | } |
473 | result = Curl_blockread_all(data, sock, (char *)gss_recv_token.value, |
474 | gss_recv_token.length, &actualread); |
475 | |
476 | if(result || (actualread != us_length)) { |
477 | failf(data, "Failed to receive GSS-API encryptrion type." ); |
478 | gss_release_buffer(&gss_status, &gss_recv_token); |
479 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
480 | return CURLE_COULDNT_CONNECT; |
481 | } |
482 | |
483 | if(!data->set.socks5_gssapi_nec) { |
484 | gss_major_status = gss_unwrap(&gss_minor_status, gss_context, |
485 | &gss_recv_token, &gss_w_token, |
486 | 0, GSS_C_QOP_DEFAULT); |
487 | |
488 | if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_unwrap" )) { |
489 | gss_release_buffer(&gss_status, &gss_recv_token); |
490 | gss_release_buffer(&gss_status, &gss_w_token); |
491 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
492 | failf(data, "Failed to unwrap GSS-API encryption value into token." ); |
493 | return CURLE_COULDNT_CONNECT; |
494 | } |
495 | gss_release_buffer(&gss_status, &gss_recv_token); |
496 | |
497 | if(gss_w_token.length != 1) { |
498 | failf(data, "Invalid GSS-API encryption response length (%zu)." , |
499 | gss_w_token.length); |
500 | gss_release_buffer(&gss_status, &gss_w_token); |
501 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
502 | return CURLE_COULDNT_CONNECT; |
503 | } |
504 | |
505 | memcpy(socksreq, gss_w_token.value, gss_w_token.length); |
506 | gss_release_buffer(&gss_status, &gss_w_token); |
507 | } |
508 | else { |
509 | if(gss_recv_token.length != 1) { |
510 | failf(data, "Invalid GSS-API encryption response length (%zu)." , |
511 | gss_recv_token.length); |
512 | gss_release_buffer(&gss_status, &gss_recv_token); |
513 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
514 | return CURLE_COULDNT_CONNECT; |
515 | } |
516 | |
517 | memcpy(socksreq, gss_recv_token.value, gss_recv_token.length); |
518 | gss_release_buffer(&gss_status, &gss_recv_token); |
519 | } |
520 | |
521 | (void)curlx_nonblock(sock, TRUE); |
522 | |
523 | infof(data, "SOCKS5 access with%s protection granted." , |
524 | (socksreq[0] == 0)?"out GSS-API data" : |
525 | ((socksreq[0] == 1)?" GSS-API integrity" :" GSS-API confidentiality" )); |
526 | |
527 | conn->socks5_gssapi_enctype = socksreq[0]; |
528 | if(socksreq[0] == 0) |
529 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
530 | |
531 | return CURLE_OK; |
532 | } |
533 | |
534 | #endif /* HAVE_GSSAPI && !CURL_DISABLE_PROXY */ |
535 | |