source: heimdal/trunk/appl/test/http_client.c

Last change on this file was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 12.2 KB
Line 
1/*
2 * Copyright (c) 2003 - 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "test_locl.h"
35#include <gssapi/gssapi.h>
36#include <gssapi/gssapi_krb5.h>
37#include <gssapi/gssapi_spnego.h>
38#include "gss_common.h"
39#include <base64.h>
40
41RCSID("$Id$");
42
43/*
44 * A simplistic client implementing draft-brezak-spnego-http-04.txt
45 */
46
47static int
48do_connect (const char *hostname, const char *port)
49{
50 struct addrinfo *ai, *a;
51 struct addrinfo hints;
52 int error;
53 int s = -1;
54
55 memset (&hints, 0, sizeof(hints));
56 hints.ai_family = PF_UNSPEC;
57 hints.ai_socktype = SOCK_STREAM;
58 hints.ai_protocol = 0;
59
60 error = getaddrinfo (hostname, port, &hints, &ai);
61 if (error)
62 errx (1, "getaddrinfo(%s): %s", hostname, gai_strerror(error));
63
64 for (a = ai; a != NULL; a = a->ai_next) {
65 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
66 if (s < 0)
67 continue;
68 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
69 warn ("connect(%s)", hostname);
70 close (s);
71 continue;
72 }
73 break;
74 }
75 freeaddrinfo (ai);
76 if (a == NULL)
77 errx (1, "failed to contact %s", hostname);
78
79 return s;
80}
81
82static void
83fdprintf(int s, const char *fmt, ...)
84{
85 size_t len;
86 ssize_t ret;
87 va_list ap;
88 char *str, *buf;
89
90 va_start(ap, fmt);
91 vasprintf(&str, fmt, ap);
92 va_end(ap);
93
94 if (str == NULL)
95 errx(1, "vasprintf");
96
97 buf = str;
98 len = strlen(buf);
99 while (len) {
100 ret = write(s, buf, len);
101 if (ret == 0)
102 err(1, "connection closed");
103 else if (ret < 0)
104 err(1, "error");
105 len -= ret;
106 buf += ret;
107 }
108 free(str);
109}
110
111static int help_flag;
112static int version_flag;
113static int verbose_flag;
114static int mutual_flag = 1;
115static int delegate_flag;
116static char *port_str = "http";
117static char *gss_service = "HTTP";
118
119static struct getargs http_args[] = {
120 { "verbose", 'v', arg_flag, &verbose_flag, "verbose logging", },
121 { "port", 'p', arg_string, &port_str, "port to connect to", "port" },
122 { "delegate", 0, arg_flag, &delegate_flag, "gssapi delegate credential" },
123 { "gss-service", 's', arg_string, &gss_service, "gssapi service to use",
124 "service" },
125 { "mech", 'm', arg_string, &mech, "gssapi mech to use", "mech" },
126 { "mutual", 0, arg_negative_flag, &mutual_flag, "no gssapi mutual auth" },
127 { "help", 'h', arg_flag, &help_flag },
128 { "version", 0, arg_flag, &version_flag }
129};
130
131static int num_http_args = sizeof(http_args) / sizeof(http_args[0]);
132
133static void
134usage(int code)
135{
136 arg_printusage(http_args, num_http_args, NULL, "host [page]");
137 exit(code);
138}
139
140/*
141 *
142 */
143
144struct http_req {
145 char *response;
146 char **headers;
147 int num_headers;
148 void *body;
149 size_t body_size;
150};
151
152
153static void
154http_req_zero(struct http_req *req)
155{
156 req->response = NULL;
157 req->headers = NULL;
158 req->num_headers = 0;
159 req->body = NULL;
160 req->body_size = 0;
161}
162
163static void
164http_req_free(struct http_req *req)
165{
166 int i;
167
168 free(req->response);
169 for (i = 0; i < req->num_headers; i++)
170 free(req->headers[i]);
171 free(req->headers);
172 free(req->body);
173 http_req_zero(req);
174}
175
176static const char *
177http_find_header(struct http_req *req, const char *header)
178{
179 int i, len = strlen(header);
180
181 for (i = 0; i < req->num_headers; i++) {
182 if (strncasecmp(header, req->headers[i], len) == 0) {
183 return req->headers[i] + len + 1;
184 }
185 }
186 return NULL;
187}
188
189
190static int
191http_query(const char *host, const char *page,
192 char **headers, int num_headers, struct http_req *req)
193{
194 enum { RESPONSE, HEADER, BODY } state;
195 ssize_t ret;
196 char in_buf[1024], *in_ptr = in_buf;
197 size_t in_len = 0;
198 int s, i;
199
200 http_req_zero(req);
201
202 s = do_connect(host, port_str);
203 if (s < 0)
204 errx(1, "connection failed");
205
206 fdprintf(s, "GET %s HTTP/1.0\r\n", page);
207 for (i = 0; i < num_headers; i++)
208 fdprintf(s, "%s\r\n", headers[i]);
209 fdprintf(s, "Host: %s\r\n\r\n", host);
210
211 state = RESPONSE;
212
213 while (1) {
214 ret = read (s, in_ptr, sizeof(in_buf) - in_len - 1);
215 if (ret == 0)
216 break;
217 else if (ret < 0)
218 err (1, "read: %lu", (unsigned long)ret);
219
220 in_buf[ret + in_len] = '\0';
221
222 if (state == HEADER || state == RESPONSE) {
223 char *p;
224
225 in_len += ret;
226 in_ptr += ret;
227
228 while (1) {
229 p = strstr(in_buf, "\r\n");
230
231 if (p == NULL) {
232 break;
233 } else if (p == in_buf) {
234 memmove(in_buf, in_buf + 2, sizeof(in_buf) - 2);
235 state = BODY;
236 in_len -= 2;
237 in_ptr -= 2;
238 break;
239 } else if (state == RESPONSE) {
240 req->response = emalloc(p - in_buf + 1);
241 memcpy(req->response, in_buf, p - in_buf);
242 req->response[p - in_buf] = '\0';
243 state = HEADER;
244 } else {
245 req->headers = realloc(req->headers,
246 (req->num_headers + 1) * sizeof(req->headers[0]));
247 req->headers[req->num_headers] = emalloc(p - in_buf + 1);
248 memcpy(req->headers[req->num_headers], in_buf, p - in_buf);
249 req->headers[req->num_headers][p - in_buf] = '\0';
250 if (req->headers[req->num_headers] == NULL)
251 errx(1, "strdup");
252 req->num_headers++;
253 }
254 memmove(in_buf, p + 2, sizeof(in_buf) - (p - in_buf) - 2);
255 in_len -= (p - in_buf) + 2;
256 in_ptr -= (p - in_buf) + 2;
257 }
258 }
259
260 if (state == BODY) {
261
262 req->body = erealloc(req->body, req->body_size + ret + 1);
263
264 memcpy((char *)req->body + req->body_size, in_buf, ret);
265 req->body_size += ret;
266 ((char *)req->body)[req->body_size] = '\0';
267
268 in_ptr = in_buf;
269 in_len = 0;
270 } else
271 abort();
272 }
273
274 if (verbose_flag) {
275 int i;
276 printf("response: %s\n", req->response);
277 for (i = 0; i < req->num_headers; i++)
278 printf("header[%d] %s\n", i, req->headers[i]);
279 printf("body: %.*s\n", (int)req->body_size, (char *)req->body);
280 }
281
282 close(s);
283 return 0;
284}
285
286
287int
288main(int argc, char **argv)
289{
290 struct http_req req;
291 const char *host, *page;
292 int i, done, print_body, gssapi_done, gssapi_started;
293 char *headers[10]; /* XXX */
294 int num_headers;
295 gss_ctx_id_t context_hdl = GSS_C_NO_CONTEXT;
296 gss_name_t server = GSS_C_NO_NAME;
297 int optind = 0;
298 gss_OID mech_oid;
299 OM_uint32 flags;
300
301 setprogname(argv[0]);
302
303 if(getarg(http_args, num_http_args, argc, argv, &optind))
304 usage(1);
305
306 if (help_flag)
307 usage (0);
308
309 if(version_flag) {
310 print_version(NULL);
311 exit(0);
312 }
313
314 argc -= optind;
315 argv += optind;
316
317 mech_oid = select_mech(mech);
318
319 if (argc != 1 && argc != 2)
320 errx(1, "usage: %s host [page]", getprogname());
321 host = argv[0];
322 if (argc == 2)
323 page = argv[1];
324 else
325 page = "/";
326
327 flags = 0;
328 if (delegate_flag)
329 flags |= GSS_C_DELEG_FLAG;
330 if (mutual_flag)
331 flags |= GSS_C_MUTUAL_FLAG;
332
333 done = 0;
334 num_headers = 0;
335 gssapi_done = 1;
336 gssapi_started = 0;
337 do {
338 print_body = 0;
339
340 http_query(host, page, headers, num_headers, &req);
341 for (i = 0 ; i < num_headers; i++)
342 free(headers[i]);
343 num_headers = 0;
344
345 if (strstr(req.response, " 200 ") != NULL) {
346 print_body = 1;
347 done = 1;
348 } else if (strstr(req.response, " 401 ") != NULL) {
349 if (http_find_header(&req, "WWW-Authenticate:") == NULL)
350 errx(1, "Got %s but missed `WWW-Authenticate'", req.response);
351 gssapi_done = 0;
352 }
353
354 if (!gssapi_done) {
355 const char *h = http_find_header(&req, "WWW-Authenticate:");
356 if (h == NULL)
357 errx(1, "Got %s but missed `WWW-Authenticate'", req.response);
358
359 if (strncasecmp(h, "Negotiate", 9) == 0) {
360 OM_uint32 maj_stat, min_stat;
361 gss_buffer_desc input_token, output_token;
362
363 if (verbose_flag)
364 printf("Negotiate found\n");
365
366 if (server == GSS_C_NO_NAME) {
367 char *name;
368 asprintf(&name, "%s@%s", gss_service, host);
369 input_token.length = strlen(name);
370 input_token.value = name;
371
372 maj_stat = gss_import_name(&min_stat,
373 &input_token,
374 GSS_C_NT_HOSTBASED_SERVICE,
375 &server);
376 if (GSS_ERROR(maj_stat))
377 gss_err (1, min_stat, "gss_inport_name");
378 free(name);
379 input_token.length = 0;
380 input_token.value = NULL;
381 }
382
383 i = 9;
384 while(h[i] && isspace((unsigned char)h[i]))
385 i++;
386 if (h[i] != '\0') {
387 int len = strlen(&h[i]);
388 if (len == 0)
389 errx(1, "invalid Negotiate token");
390 input_token.value = emalloc(len);
391 len = base64_decode(&h[i], input_token.value);
392 if (len < 0)
393 errx(1, "invalid base64 Negotiate token %s", &h[i]);
394 input_token.length = len;
395 } else {
396 if (gssapi_started)
397 errx(1, "Negotiate already started");
398 gssapi_started = 1;
399
400 input_token.length = 0;
401 input_token.value = NULL;
402 }
403
404 maj_stat =
405 gss_init_sec_context(&min_stat,
406 GSS_C_NO_CREDENTIAL,
407 &context_hdl,
408 server,
409 mech_oid,
410 flags,
411 0,
412 GSS_C_NO_CHANNEL_BINDINGS,
413 &input_token,
414 NULL,
415 &output_token,
416 NULL,
417 NULL);
418 if (GSS_ERROR(maj_stat))
419 gss_err (1, min_stat, "gss_init_sec_context");
420 else if (maj_stat & GSS_S_CONTINUE_NEEDED)
421 gssapi_done = 0;
422 else {
423 gss_name_t targ_name, src_name;
424 gss_buffer_desc name_buffer;
425 gss_OID mech_type;
426
427 gssapi_done = 1;
428
429 printf("Negotiate done: %s\n", mech);
430
431 maj_stat = gss_inquire_context(&min_stat,
432 context_hdl,
433 &src_name,
434 &targ_name,
435 NULL,
436 &mech_type,
437 NULL,
438 NULL,
439 NULL);
440 if (GSS_ERROR(maj_stat))
441 gss_err (1, min_stat, "gss_inquire_context");
442
443 maj_stat = gss_display_name(&min_stat,
444 src_name,
445 &name_buffer,
446 NULL);
447 if (GSS_ERROR(maj_stat))
448 gss_err (1, min_stat, "gss_display_name");
449
450 printf("Source: %.*s\n",
451 (int)name_buffer.length,
452 (char *)name_buffer.value);
453
454 gss_release_buffer(&min_stat, &name_buffer);
455
456 maj_stat = gss_display_name(&min_stat,
457 targ_name,
458 &name_buffer,
459 NULL);
460 if (GSS_ERROR(maj_stat))
461 gss_err (1, min_stat, "gss_display_name");
462
463 printf("Target: %.*s\n",
464 (int)name_buffer.length,
465 (char *)name_buffer.value);
466
467 gss_release_name(&min_stat, &targ_name);
468 gss_release_buffer(&min_stat, &name_buffer);
469 }
470
471 if (output_token.length) {
472 char *neg_token;
473
474 base64_encode(output_token.value,
475 output_token.length,
476 &neg_token);
477
478 asprintf(&headers[0], "Authorization: Negotiate %s",
479 neg_token);
480
481 num_headers = 1;
482 free(neg_token);
483 gss_release_buffer(&min_stat, &output_token);
484 }
485 if (input_token.length)
486 free(input_token.value);
487
488 } else
489 done = 1;
490 } else
491 done = 1;
492
493 if (verbose_flag) {
494 printf("%s\n\n", req.response);
495
496 for (i = 0; i < req.num_headers; i++)
497 printf("%s\n", req.headers[i]);
498 printf("\n");
499 }
500 if (print_body || verbose_flag)
501 printf("%.*s\n", (int)req.body_size, (char *)req.body);
502
503 http_req_free(&req);
504 } while (!done);
505
506 if (gssapi_done == 0)
507 errx(1, "gssapi not done but http dance done");
508
509 return 0;
510}
Note: See TracBrowser for help on using the repository browser.