1 | /*************************************************************************** |
2 | * _ _ ____ _ |
3 | * Project ___| | | | _ \| | |
4 | * / __| | | | |_) | | |
5 | * | (__| |_| | _ <| |___ |
6 | * \___|\___/|_| \_\_____| |
7 | * |
8 | * Copyright (C) 2009, Markus Moeller, <markus_moeller@compuserve.com> |
9 | * Copyright (C) 2012 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al. |
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.haxx.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 | ***************************************************************************/ |
23 | |
24 | #include "curl_setup.h" |
25 | |
26 | #if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_PROXY) |
27 | |
28 | #include "curl_gssapi.h" |
29 | #include "urldata.h" |
30 | #include "sendf.h" |
31 | #include "connect.h" |
32 | #include "timeval.h" |
33 | #include "socks.h" |
34 | #include "warnless.h" |
35 | |
36 | /* The last 3 #include files should be in this order */ |
37 | #include "curl_printf.h" |
38 | #include "curl_memory.h" |
39 | #include "memdebug.h" |
40 | |
41 | static gss_ctx_id_t gss_context = GSS_C_NO_CONTEXT; |
42 | |
43 | /* |
44 | * Helper GSS-API error functions. |
45 | */ |
46 | static int check_gss_err(struct Curl_easy *data, |
47 | OM_uint32 major_status, |
48 | OM_uint32 minor_status, |
49 | const char *function) |
50 | { |
51 | if(GSS_ERROR(major_status)) { |
52 | OM_uint32 maj_stat, min_stat; |
53 | OM_uint32 msg_ctx = 0; |
54 | gss_buffer_desc status_string; |
55 | char buf[1024]; |
56 | size_t len; |
57 | |
58 | len = 0; |
59 | msg_ctx = 0; |
60 | while(!msg_ctx) { |
61 | /* convert major status code (GSS-API error) to text */ |
62 | maj_stat = gss_display_status(&min_stat, major_status, |
63 | GSS_C_GSS_CODE, |
64 | GSS_C_NULL_OID, |
65 | &msg_ctx, &status_string); |
66 | if(maj_stat == GSS_S_COMPLETE) { |
67 | if(sizeof(buf) > len + status_string.length + 1) { |
68 | strcpy(buf + len, (char *) status_string.value); |
69 | len += status_string.length; |
70 | } |
71 | gss_release_buffer(&min_stat, &status_string); |
72 | break; |
73 | } |
74 | gss_release_buffer(&min_stat, &status_string); |
75 | } |
76 | if(sizeof(buf) > len + 3) { |
77 | strcpy(buf + len, ".\n" ); |
78 | len += 2; |
79 | } |
80 | msg_ctx = 0; |
81 | while(!msg_ctx) { |
82 | /* convert minor status code (underlying routine error) to text */ |
83 | maj_stat = gss_display_status(&min_stat, minor_status, |
84 | GSS_C_MECH_CODE, |
85 | GSS_C_NULL_OID, |
86 | &msg_ctx, &status_string); |
87 | if(maj_stat == GSS_S_COMPLETE) { |
88 | if(sizeof(buf) > len + status_string.length) |
89 | strcpy(buf + len, (char *) status_string.value); |
90 | gss_release_buffer(&min_stat, &status_string); |
91 | break; |
92 | } |
93 | gss_release_buffer(&min_stat, &status_string); |
94 | } |
95 | failf(data, "GSS-API error: %s failed:\n%s" , function, buf); |
96 | return 1; |
97 | } |
98 | |
99 | return 0; |
100 | } |
101 | |
102 | CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex, |
103 | struct connectdata *conn) |
104 | { |
105 | struct Curl_easy *data = conn->data; |
106 | curl_socket_t sock = conn->sock[sockindex]; |
107 | CURLcode code; |
108 | ssize_t actualread; |
109 | ssize_t written; |
110 | int result; |
111 | OM_uint32 gss_major_status, gss_minor_status, gss_status; |
112 | OM_uint32 gss_ret_flags; |
113 | int gss_conf_state, gss_enc; |
114 | gss_buffer_desc service = GSS_C_EMPTY_BUFFER; |
115 | gss_buffer_desc gss_send_token = GSS_C_EMPTY_BUFFER; |
116 | gss_buffer_desc gss_recv_token = GSS_C_EMPTY_BUFFER; |
117 | gss_buffer_desc gss_w_token = GSS_C_EMPTY_BUFFER; |
118 | gss_buffer_desc* gss_token = GSS_C_NO_BUFFER; |
119 | gss_name_t server = GSS_C_NO_NAME; |
120 | gss_name_t gss_client_name = GSS_C_NO_NAME; |
121 | unsigned short us_length; |
122 | char *user = NULL; |
123 | unsigned char socksreq[4]; /* room for GSS-API exchange header only */ |
124 | const char *serviceptr = data->set.str[STRING_PROXY_SERVICE_NAME] ? |
125 | data->set.str[STRING_PROXY_SERVICE_NAME] : "rcmd" ; |
126 | const size_t serviceptr_length = strlen(serviceptr); |
127 | |
128 | /* GSS-API request looks like |
129 | * +----+------+-----+----------------+ |
130 | * |VER | MTYP | LEN | TOKEN | |
131 | * +----+------+----------------------+ |
132 | * | 1 | 1 | 2 | up to 2^16 - 1 | |
133 | * +----+------+-----+----------------+ |
134 | */ |
135 | |
136 | /* prepare service name */ |
137 | if(strchr(serviceptr, '/')) { |
138 | service.length = serviceptr_length; |
139 | service.value = malloc(service.length); |
140 | if(!service.value) |
141 | return CURLE_OUT_OF_MEMORY; |
142 | memcpy(service.value, serviceptr, service.length); |
143 | |
144 | gss_major_status = gss_import_name(&gss_minor_status, &service, |
145 | (gss_OID) GSS_C_NULL_OID, &server); |
146 | } |
147 | else { |
148 | service.value = malloc(serviceptr_length + |
149 | strlen(conn->socks_proxy.host.name) + 2); |
150 | if(!service.value) |
151 | return CURLE_OUT_OF_MEMORY; |
152 | service.length = serviceptr_length + |
153 | strlen(conn->socks_proxy.host.name) + 1; |
154 | msnprintf(service.value, service.length + 1, "%s@%s" , |
155 | serviceptr, conn->socks_proxy.host.name); |
156 | |
157 | gss_major_status = gss_import_name(&gss_minor_status, &service, |
158 | GSS_C_NT_HOSTBASED_SERVICE, &server); |
159 | } |
160 | |
161 | gss_release_buffer(&gss_status, &service); /* clear allocated memory */ |
162 | |
163 | if(check_gss_err(data, gss_major_status, |
164 | gss_minor_status, "gss_import_name()" )) { |
165 | failf(data, "Failed to create service name." ); |
166 | gss_release_name(&gss_status, &server); |
167 | return CURLE_COULDNT_CONNECT; |
168 | } |
169 | |
170 | /* As long as we need to keep sending some context info, and there's no */ |
171 | /* errors, keep sending it... */ |
172 | for(;;) { |
173 | gss_major_status = Curl_gss_init_sec_context(data, |
174 | &gss_minor_status, |
175 | &gss_context, |
176 | server, |
177 | &Curl_krb5_mech_oid, |
178 | NULL, |
179 | gss_token, |
180 | &gss_send_token, |
181 | TRUE, |
182 | &gss_ret_flags); |
183 | |
184 | if(gss_token != GSS_C_NO_BUFFER) |
185 | gss_release_buffer(&gss_status, &gss_recv_token); |
186 | if(check_gss_err(data, gss_major_status, |
187 | gss_minor_status, "gss_init_sec_context" )) { |
188 | gss_release_name(&gss_status, &server); |
189 | gss_release_buffer(&gss_status, &gss_recv_token); |
190 | gss_release_buffer(&gss_status, &gss_send_token); |
191 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
192 | failf(data, "Failed to initial GSS-API token." ); |
193 | return CURLE_COULDNT_CONNECT; |
194 | } |
195 | |
196 | if(gss_send_token.length != 0) { |
197 | socksreq[0] = 1; /* GSS-API subnegotiation version */ |
198 | socksreq[1] = 1; /* authentication message type */ |
199 | us_length = htons((short)gss_send_token.length); |
200 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
201 | |
202 | code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written); |
203 | if(code || (4 != written)) { |
204 | failf(data, "Failed to send GSS-API authentication request." ); |
205 | gss_release_name(&gss_status, &server); |
206 | gss_release_buffer(&gss_status, &gss_recv_token); |
207 | gss_release_buffer(&gss_status, &gss_send_token); |
208 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
209 | return CURLE_COULDNT_CONNECT; |
210 | } |
211 | |
212 | code = Curl_write_plain(conn, sock, (char *)gss_send_token.value, |
213 | gss_send_token.length, &written); |
214 | |
215 | if(code || ((ssize_t)gss_send_token.length != written)) { |
216 | failf(data, "Failed to send GSS-API authentication token." ); |
217 | gss_release_name(&gss_status, &server); |
218 | gss_release_buffer(&gss_status, &gss_recv_token); |
219 | gss_release_buffer(&gss_status, &gss_send_token); |
220 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
221 | return CURLE_COULDNT_CONNECT; |
222 | } |
223 | |
224 | } |
225 | |
226 | gss_release_buffer(&gss_status, &gss_send_token); |
227 | gss_release_buffer(&gss_status, &gss_recv_token); |
228 | if(gss_major_status != GSS_S_CONTINUE_NEEDED) break; |
229 | |
230 | /* analyse response */ |
231 | |
232 | /* GSS-API response looks like |
233 | * +----+------+-----+----------------+ |
234 | * |VER | MTYP | LEN | TOKEN | |
235 | * +----+------+----------------------+ |
236 | * | 1 | 1 | 2 | up to 2^16 - 1 | |
237 | * +----+------+-----+----------------+ |
238 | */ |
239 | |
240 | result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread); |
241 | if(result || (actualread != 4)) { |
242 | failf(data, "Failed to receive GSS-API authentication response." ); |
243 | gss_release_name(&gss_status, &server); |
244 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
245 | return CURLE_COULDNT_CONNECT; |
246 | } |
247 | |
248 | /* ignore the first (VER) byte */ |
249 | if(socksreq[1] == 255) { /* status / message type */ |
250 | failf(data, "User was rejected by the SOCKS5 server (%d %d)." , |
251 | socksreq[0], socksreq[1]); |
252 | gss_release_name(&gss_status, &server); |
253 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
254 | return CURLE_COULDNT_CONNECT; |
255 | } |
256 | |
257 | if(socksreq[1] != 1) { /* status / messgae type */ |
258 | failf(data, "Invalid GSS-API authentication response type (%d %d)." , |
259 | socksreq[0], socksreq[1]); |
260 | gss_release_name(&gss_status, &server); |
261 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
262 | return CURLE_COULDNT_CONNECT; |
263 | } |
264 | |
265 | memcpy(&us_length, socksreq + 2, sizeof(short)); |
266 | us_length = ntohs(us_length); |
267 | |
268 | gss_recv_token.length = us_length; |
269 | gss_recv_token.value = malloc(us_length); |
270 | if(!gss_recv_token.value) { |
271 | failf(data, |
272 | "Could not allocate memory for GSS-API authentication " |
273 | "response token." ); |
274 | gss_release_name(&gss_status, &server); |
275 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
276 | return CURLE_OUT_OF_MEMORY; |
277 | } |
278 | |
279 | result = Curl_blockread_all(conn, sock, (char *)gss_recv_token.value, |
280 | gss_recv_token.length, &actualread); |
281 | |
282 | if(result || (actualread != us_length)) { |
283 | failf(data, "Failed to receive GSS-API authentication token." ); |
284 | gss_release_name(&gss_status, &server); |
285 | gss_release_buffer(&gss_status, &gss_recv_token); |
286 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
287 | return CURLE_COULDNT_CONNECT; |
288 | } |
289 | |
290 | gss_token = &gss_recv_token; |
291 | } |
292 | |
293 | gss_release_name(&gss_status, &server); |
294 | |
295 | /* Everything is good so far, user was authenticated! */ |
296 | gss_major_status = gss_inquire_context(&gss_minor_status, gss_context, |
297 | &gss_client_name, NULL, NULL, NULL, |
298 | NULL, NULL, NULL); |
299 | if(check_gss_err(data, gss_major_status, |
300 | gss_minor_status, "gss_inquire_context" )) { |
301 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
302 | gss_release_name(&gss_status, &gss_client_name); |
303 | failf(data, "Failed to determine user name." ); |
304 | return CURLE_COULDNT_CONNECT; |
305 | } |
306 | gss_major_status = gss_display_name(&gss_minor_status, gss_client_name, |
307 | &gss_send_token, NULL); |
308 | if(check_gss_err(data, gss_major_status, |
309 | gss_minor_status, "gss_display_name" )) { |
310 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
311 | gss_release_name(&gss_status, &gss_client_name); |
312 | gss_release_buffer(&gss_status, &gss_send_token); |
313 | failf(data, "Failed to determine user name." ); |
314 | return CURLE_COULDNT_CONNECT; |
315 | } |
316 | user = malloc(gss_send_token.length + 1); |
317 | if(!user) { |
318 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
319 | gss_release_name(&gss_status, &gss_client_name); |
320 | gss_release_buffer(&gss_status, &gss_send_token); |
321 | return CURLE_OUT_OF_MEMORY; |
322 | } |
323 | |
324 | memcpy(user, gss_send_token.value, gss_send_token.length); |
325 | user[gss_send_token.length] = '\0'; |
326 | gss_release_name(&gss_status, &gss_client_name); |
327 | gss_release_buffer(&gss_status, &gss_send_token); |
328 | infof(data, "SOCKS5 server authencticated user %s with GSS-API.\n" ,user); |
329 | free(user); |
330 | user = NULL; |
331 | |
332 | /* Do encryption */ |
333 | socksreq[0] = 1; /* GSS-API subnegotiation version */ |
334 | socksreq[1] = 2; /* encryption message type */ |
335 | |
336 | gss_enc = 0; /* no data protection */ |
337 | /* do confidentiality protection if supported */ |
338 | if(gss_ret_flags & GSS_C_CONF_FLAG) |
339 | gss_enc = 2; |
340 | /* else do integrity protection */ |
341 | else if(gss_ret_flags & GSS_C_INTEG_FLAG) |
342 | gss_enc = 1; |
343 | |
344 | infof(data, "SOCKS5 server supports GSS-API %s data protection.\n" , |
345 | (gss_enc == 0)?"no" :((gss_enc==1)?"integrity" :"confidentiality" )); |
346 | /* force for the moment to no data protection */ |
347 | gss_enc = 0; |
348 | /* |
349 | * Sending the encryption type in clear seems wrong. It should be |
350 | * protected with gss_seal()/gss_wrap(). See RFC1961 extract below |
351 | * The NEC reference implementations on which this is based is |
352 | * therefore at fault |
353 | * |
354 | * +------+------+------+.......................+ |
355 | * + ver | mtyp | len | token | |
356 | * +------+------+------+.......................+ |
357 | * + 0x01 | 0x02 | 0x02 | up to 2^16 - 1 octets | |
358 | * +------+------+------+.......................+ |
359 | * |
360 | * Where: |
361 | * |
362 | * - "ver" is the protocol version number, here 1 to represent the |
363 | * first version of the SOCKS/GSS-API protocol |
364 | * |
365 | * - "mtyp" is the message type, here 2 to represent a protection |
366 | * -level negotiation message |
367 | * |
368 | * - "len" is the length of the "token" field in octets |
369 | * |
370 | * - "token" is the GSS-API encapsulated protection level |
371 | * |
372 | * The token is produced by encapsulating an octet containing the |
373 | * required protection level using gss_seal()/gss_wrap() with conf_req |
374 | * set to FALSE. The token is verified using gss_unseal()/ |
375 | * gss_unwrap(). |
376 | * |
377 | */ |
378 | if(data->set.socks5_gssapi_nec) { |
379 | us_length = htons((short)1); |
380 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
381 | } |
382 | else { |
383 | gss_send_token.length = 1; |
384 | gss_send_token.value = malloc(1); |
385 | if(!gss_send_token.value) { |
386 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
387 | return CURLE_OUT_OF_MEMORY; |
388 | } |
389 | memcpy(gss_send_token.value, &gss_enc, 1); |
390 | |
391 | gss_major_status = gss_wrap(&gss_minor_status, gss_context, 0, |
392 | GSS_C_QOP_DEFAULT, &gss_send_token, |
393 | &gss_conf_state, &gss_w_token); |
394 | |
395 | if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_wrap" )) { |
396 | gss_release_buffer(&gss_status, &gss_send_token); |
397 | gss_release_buffer(&gss_status, &gss_w_token); |
398 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
399 | failf(data, "Failed to wrap GSS-API encryption value into token." ); |
400 | return CURLE_COULDNT_CONNECT; |
401 | } |
402 | gss_release_buffer(&gss_status, &gss_send_token); |
403 | |
404 | us_length = htons((short)gss_w_token.length); |
405 | memcpy(socksreq + 2, &us_length, sizeof(short)); |
406 | } |
407 | |
408 | code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written); |
409 | if(code || (4 != written)) { |
410 | failf(data, "Failed to send GSS-API encryption request." ); |
411 | gss_release_buffer(&gss_status, &gss_w_token); |
412 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
413 | return CURLE_COULDNT_CONNECT; |
414 | } |
415 | |
416 | if(data->set.socks5_gssapi_nec) { |
417 | memcpy(socksreq, &gss_enc, 1); |
418 | code = Curl_write_plain(conn, sock, socksreq, 1, &written); |
419 | if(code || ( 1 != written)) { |
420 | failf(data, "Failed to send GSS-API encryption type." ); |
421 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
422 | return CURLE_COULDNT_CONNECT; |
423 | } |
424 | } |
425 | else { |
426 | code = Curl_write_plain(conn, sock, (char *)gss_w_token.value, |
427 | gss_w_token.length, &written); |
428 | if(code || ((ssize_t)gss_w_token.length != written)) { |
429 | failf(data, "Failed to send GSS-API encryption type." ); |
430 | gss_release_buffer(&gss_status, &gss_w_token); |
431 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
432 | return CURLE_COULDNT_CONNECT; |
433 | } |
434 | gss_release_buffer(&gss_status, &gss_w_token); |
435 | } |
436 | |
437 | result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread); |
438 | if(result || (actualread != 4)) { |
439 | failf(data, "Failed to receive GSS-API encryption response." ); |
440 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
441 | return CURLE_COULDNT_CONNECT; |
442 | } |
443 | |
444 | /* ignore the first (VER) byte */ |
445 | if(socksreq[1] == 255) { /* status / message type */ |
446 | failf(data, "User was rejected by the SOCKS5 server (%d %d)." , |
447 | socksreq[0], socksreq[1]); |
448 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
449 | return CURLE_COULDNT_CONNECT; |
450 | } |
451 | |
452 | if(socksreq[1] != 2) { /* status / messgae type */ |
453 | failf(data, "Invalid GSS-API encryption response type (%d %d)." , |
454 | socksreq[0], socksreq[1]); |
455 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
456 | return CURLE_COULDNT_CONNECT; |
457 | } |
458 | |
459 | memcpy(&us_length, socksreq + 2, sizeof(short)); |
460 | us_length = ntohs(us_length); |
461 | |
462 | gss_recv_token.length = us_length; |
463 | gss_recv_token.value = malloc(gss_recv_token.length); |
464 | if(!gss_recv_token.value) { |
465 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
466 | return CURLE_OUT_OF_MEMORY; |
467 | } |
468 | result = Curl_blockread_all(conn, sock, (char *)gss_recv_token.value, |
469 | gss_recv_token.length, &actualread); |
470 | |
471 | if(result || (actualread != us_length)) { |
472 | failf(data, "Failed to receive GSS-API encryptrion type." ); |
473 | gss_release_buffer(&gss_status, &gss_recv_token); |
474 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
475 | return CURLE_COULDNT_CONNECT; |
476 | } |
477 | |
478 | if(!data->set.socks5_gssapi_nec) { |
479 | gss_major_status = gss_unwrap(&gss_minor_status, gss_context, |
480 | &gss_recv_token, &gss_w_token, |
481 | 0, GSS_C_QOP_DEFAULT); |
482 | |
483 | if(check_gss_err(data, gss_major_status, gss_minor_status, "gss_unwrap" )) { |
484 | gss_release_buffer(&gss_status, &gss_recv_token); |
485 | gss_release_buffer(&gss_status, &gss_w_token); |
486 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
487 | failf(data, "Failed to unwrap GSS-API encryption value into token." ); |
488 | return CURLE_COULDNT_CONNECT; |
489 | } |
490 | gss_release_buffer(&gss_status, &gss_recv_token); |
491 | |
492 | if(gss_w_token.length != 1) { |
493 | failf(data, "Invalid GSS-API encryption response length (%d)." , |
494 | gss_w_token.length); |
495 | gss_release_buffer(&gss_status, &gss_w_token); |
496 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
497 | return CURLE_COULDNT_CONNECT; |
498 | } |
499 | |
500 | memcpy(socksreq, gss_w_token.value, gss_w_token.length); |
501 | gss_release_buffer(&gss_status, &gss_w_token); |
502 | } |
503 | else { |
504 | if(gss_recv_token.length != 1) { |
505 | failf(data, "Invalid GSS-API encryption response length (%d)." , |
506 | gss_recv_token.length); |
507 | gss_release_buffer(&gss_status, &gss_recv_token); |
508 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
509 | return CURLE_COULDNT_CONNECT; |
510 | } |
511 | |
512 | memcpy(socksreq, gss_recv_token.value, gss_recv_token.length); |
513 | gss_release_buffer(&gss_status, &gss_recv_token); |
514 | } |
515 | |
516 | infof(data, "SOCKS5 access with%s protection granted.\n" , |
517 | (socksreq[0] == 0)?"out GSS-API data" : |
518 | ((socksreq[0] == 1)?" GSS-API integrity" :" GSS-API confidentiality" )); |
519 | |
520 | conn->socks5_gssapi_enctype = socksreq[0]; |
521 | if(socksreq[0] == 0) |
522 | gss_delete_sec_context(&gss_status, &gss_context, NULL); |
523 | |
524 | return CURLE_OK; |
525 | } |
526 | |
527 | #endif /* HAVE_GSSAPI && !CURL_DISABLE_PROXY */ |
528 | |