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[thirdparty/hostap.git] / src / utils / http_curl.c
1 /*
2 * HTTP wrapper for libcurl
3 * Copyright (c) 2012-2014, Qualcomm Atheros, Inc.
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10 #include <curl/curl.h>
11 #ifdef EAP_TLS_OPENSSL
12 #include <openssl/ssl.h>
13 #include <openssl/asn1.h>
14 #include <openssl/asn1t.h>
15 #include <openssl/x509v3.h>
16
17 #ifdef SSL_set_tlsext_status_type
18 #ifndef OPENSSL_NO_TLSEXT
19 #define HAVE_OCSP
20 #include <openssl/err.h>
21 #include <openssl/ocsp.h>
22 #endif /* OPENSSL_NO_TLSEXT */
23 #endif /* SSL_set_tlsext_status_type */
24 #endif /* EAP_TLS_OPENSSL */
25
26 #include "common.h"
27 #include "xml-utils.h"
28 #include "http-utils.h"
29 #ifdef EAP_TLS_OPENSSL
30 #include "crypto/tls_openssl.h"
31 #endif /* EAP_TLS_OPENSSL */
32
33
34 struct http_ctx {
35 void *ctx;
36 struct xml_node_ctx *xml;
37 CURL *curl;
38 struct curl_slist *curl_hdr;
39 char *svc_address;
40 char *svc_ca_fname;
41 char *svc_username;
42 char *svc_password;
43 char *svc_client_cert;
44 char *svc_client_key;
45 char *curl_buf;
46 size_t curl_buf_len;
47
48 int (*cert_cb)(void *ctx, struct http_cert *cert);
49 void *cert_cb_ctx;
50
51 enum {
52 NO_OCSP, OPTIONAL_OCSP, MANDATORY_OCSP
53 } ocsp;
54 X509 *peer_cert;
55 X509 *peer_issuer;
56 X509 *peer_issuer_issuer;
57
58 const char *last_err;
59 };
60
61
62 static void clear_curl(struct http_ctx *ctx)
63 {
64 if (ctx->curl) {
65 curl_easy_cleanup(ctx->curl);
66 ctx->curl = NULL;
67 }
68 if (ctx->curl_hdr) {
69 curl_slist_free_all(ctx->curl_hdr);
70 ctx->curl_hdr = NULL;
71 }
72 }
73
74
75 static void clone_str(char **dst, const char *src)
76 {
77 os_free(*dst);
78 if (src)
79 *dst = os_strdup(src);
80 else
81 *dst = NULL;
82 }
83
84
85 static void debug_dump(struct http_ctx *ctx, const char *title,
86 const char *buf, size_t len)
87 {
88 char *txt;
89 size_t i;
90
91 for (i = 0; i < len; i++) {
92 if (buf[i] < 32 && buf[i] != '\t' && buf[i] != '\n' &&
93 buf[i] != '\r') {
94 wpa_hexdump_ascii(MSG_MSGDUMP, title, buf, len);
95 return;
96 }
97 }
98
99 txt = os_malloc(len + 1);
100 if (txt == NULL)
101 return;
102 os_memcpy(txt, buf, len);
103 txt[len] = '\0';
104 while (len > 0) {
105 len--;
106 if (txt[len] == '\n' || txt[len] == '\r')
107 txt[len] = '\0';
108 else
109 break;
110 }
111 wpa_printf(MSG_MSGDUMP, "%s[%s]", title, txt);
112 os_free(txt);
113 }
114
115
116 static int curl_cb_debug(CURL *curl, curl_infotype info, char *buf, size_t len,
117 void *userdata)
118 {
119 struct http_ctx *ctx = userdata;
120 switch (info) {
121 case CURLINFO_TEXT:
122 debug_dump(ctx, "CURLINFO_TEXT", buf, len);
123 break;
124 case CURLINFO_HEADER_IN:
125 debug_dump(ctx, "CURLINFO_HEADER_IN", buf, len);
126 break;
127 case CURLINFO_HEADER_OUT:
128 debug_dump(ctx, "CURLINFO_HEADER_OUT", buf, len);
129 break;
130 case CURLINFO_DATA_IN:
131 debug_dump(ctx, "CURLINFO_DATA_IN", buf, len);
132 break;
133 case CURLINFO_DATA_OUT:
134 debug_dump(ctx, "CURLINFO_DATA_OUT", buf, len);
135 break;
136 case CURLINFO_SSL_DATA_IN:
137 wpa_printf(MSG_DEBUG, "debug - CURLINFO_SSL_DATA_IN - %d",
138 (int) len);
139 break;
140 case CURLINFO_SSL_DATA_OUT:
141 wpa_printf(MSG_DEBUG, "debug - CURLINFO_SSL_DATA_OUT - %d",
142 (int) len);
143 break;
144 case CURLINFO_END:
145 wpa_printf(MSG_DEBUG, "debug - CURLINFO_END - %d",
146 (int) len);
147 break;
148 }
149 return 0;
150 }
151
152
153 static size_t curl_cb_write(void *ptr, size_t size, size_t nmemb,
154 void *userdata)
155 {
156 struct http_ctx *ctx = userdata;
157 char *n;
158 n = os_realloc(ctx->curl_buf, ctx->curl_buf_len + size * nmemb + 1);
159 if (n == NULL)
160 return 0;
161 ctx->curl_buf = n;
162 os_memcpy(n + ctx->curl_buf_len, ptr, size * nmemb);
163 n[ctx->curl_buf_len + size * nmemb] = '\0';
164 ctx->curl_buf_len += size * nmemb;
165 return size * nmemb;
166 }
167
168
169 #ifdef EAP_TLS_OPENSSL
170
171 static void debug_dump_cert(const char *title, X509 *cert)
172 {
173 BIO *out;
174 char *txt;
175 size_t rlen;
176
177 out = BIO_new(BIO_s_mem());
178 if (!out)
179 return;
180
181 X509_print_ex(out, cert, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
182 rlen = BIO_ctrl_pending(out);
183 txt = os_malloc(rlen + 1);
184 if (txt) {
185 int res = BIO_read(out, txt, rlen);
186 if (res > 0) {
187 txt[res] = '\0';
188 wpa_printf(MSG_MSGDUMP, "%s:\n%s", title, txt);
189 }
190 os_free(txt);
191 }
192 BIO_free(out);
193 }
194
195
196 static void add_alt_name_othername(struct http_ctx *ctx, struct http_cert *cert,
197 OTHERNAME *o)
198 {
199 char txt[100];
200 int res;
201 struct http_othername *on;
202 ASN1_TYPE *val;
203
204 on = os_realloc_array(cert->othername, cert->num_othername + 1,
205 sizeof(struct http_othername));
206 if (on == NULL)
207 return;
208 cert->othername = on;
209 on = &on[cert->num_othername];
210 os_memset(on, 0, sizeof(*on));
211
212 res = OBJ_obj2txt(txt, sizeof(txt), o->type_id, 1);
213 if (res < 0 || res >= (int) sizeof(txt))
214 return;
215
216 on->oid = os_strdup(txt);
217 if (on->oid == NULL)
218 return;
219
220 val = o->value;
221 on->data = val->value.octet_string->data;
222 on->len = val->value.octet_string->length;
223
224 cert->num_othername++;
225 }
226
227
228 static void add_alt_name_dns(struct http_ctx *ctx, struct http_cert *cert,
229 ASN1_STRING *name)
230 {
231 char *buf;
232 char **n;
233
234 buf = NULL;
235 if (ASN1_STRING_to_UTF8((unsigned char **) &buf, name) < 0)
236 return;
237
238 n = os_realloc_array(cert->dnsname, cert->num_dnsname + 1,
239 sizeof(char *));
240 if (n == NULL)
241 return;
242
243 cert->dnsname = n;
244 n[cert->num_dnsname] = buf;
245 cert->num_dnsname++;
246 }
247
248
249 static void add_alt_name(struct http_ctx *ctx, struct http_cert *cert,
250 const GENERAL_NAME *name)
251 {
252 switch (name->type) {
253 case GEN_OTHERNAME:
254 add_alt_name_othername(ctx, cert, name->d.otherName);
255 break;
256 case GEN_DNS:
257 add_alt_name_dns(ctx, cert, name->d.dNSName);
258 break;
259 }
260 }
261
262
263 static void add_alt_names(struct http_ctx *ctx, struct http_cert *cert,
264 GENERAL_NAMES *names)
265 {
266 int num, i;
267
268 num = sk_GENERAL_NAME_num(names);
269 for (i = 0; i < num; i++) {
270 const GENERAL_NAME *name;
271 name = sk_GENERAL_NAME_value(names, i);
272 add_alt_name(ctx, cert, name);
273 }
274 }
275
276
277 /* RFC 3709 */
278
279 typedef struct {
280 X509_ALGOR *hashAlg;
281 ASN1_OCTET_STRING *hashValue;
282 } HashAlgAndValue;
283
284 typedef struct {
285 STACK_OF(HashAlgAndValue) *refStructHash;
286 STACK_OF(ASN1_IA5STRING) *refStructURI;
287 } LogotypeReference;
288
289 typedef struct {
290 ASN1_IA5STRING *mediaType;
291 STACK_OF(HashAlgAndValue) *logotypeHash;
292 STACK_OF(ASN1_IA5STRING) *logotypeURI;
293 } LogotypeDetails;
294
295 typedef struct {
296 int type;
297 union {
298 ASN1_INTEGER *numBits;
299 ASN1_INTEGER *tableSize;
300 } d;
301 } LogotypeImageResolution;
302
303 typedef struct {
304 ASN1_INTEGER *type; /* LogotypeImageType ::= INTEGER */
305 ASN1_INTEGER *fileSize;
306 ASN1_INTEGER *xSize;
307 ASN1_INTEGER *ySize;
308 LogotypeImageResolution *resolution;
309 ASN1_IA5STRING *language;
310 } LogotypeImageInfo;
311
312 typedef struct {
313 LogotypeDetails *imageDetails;
314 LogotypeImageInfo *imageInfo;
315 } LogotypeImage;
316
317 typedef struct {
318 ASN1_INTEGER *fileSize;
319 ASN1_INTEGER *playTime;
320 ASN1_INTEGER *channels;
321 ASN1_INTEGER *sampleRate;
322 ASN1_IA5STRING *language;
323 } LogotypeAudioInfo;
324
325 typedef struct {
326 LogotypeDetails *audioDetails;
327 LogotypeAudioInfo *audioInfo;
328 } LogotypeAudio;
329
330 typedef struct {
331 STACK_OF(LogotypeImage) *image;
332 STACK_OF(LogotypeAudio) *audio;
333 } LogotypeData;
334
335 typedef struct {
336 int type;
337 union {
338 LogotypeData *direct;
339 LogotypeReference *indirect;
340 } d;
341 } LogotypeInfo;
342
343 typedef struct {
344 ASN1_OBJECT *logotypeType;
345 LogotypeInfo *info;
346 } OtherLogotypeInfo;
347
348 typedef struct {
349 STACK_OF(LogotypeInfo) *communityLogos;
350 LogotypeInfo *issuerLogo;
351 LogotypeInfo *subjectLogo;
352 STACK_OF(OtherLogotypeInfo) *otherLogos;
353 } LogotypeExtn;
354
355 ASN1_SEQUENCE(HashAlgAndValue) = {
356 ASN1_SIMPLE(HashAlgAndValue, hashAlg, X509_ALGOR),
357 ASN1_SIMPLE(HashAlgAndValue, hashValue, ASN1_OCTET_STRING)
358 } ASN1_SEQUENCE_END(HashAlgAndValue);
359
360 ASN1_SEQUENCE(LogotypeReference) = {
361 ASN1_SEQUENCE_OF(LogotypeReference, refStructHash, HashAlgAndValue),
362 ASN1_SEQUENCE_OF(LogotypeReference, refStructURI, ASN1_IA5STRING)
363 } ASN1_SEQUENCE_END(LogotypeReference);
364
365 ASN1_SEQUENCE(LogotypeDetails) = {
366 ASN1_SIMPLE(LogotypeDetails, mediaType, ASN1_IA5STRING),
367 ASN1_SEQUENCE_OF(LogotypeDetails, logotypeHash, HashAlgAndValue),
368 ASN1_SEQUENCE_OF(LogotypeDetails, logotypeURI, ASN1_IA5STRING)
369 } ASN1_SEQUENCE_END(LogotypeDetails);
370
371 ASN1_CHOICE(LogotypeImageResolution) = {
372 ASN1_IMP(LogotypeImageResolution, d.numBits, ASN1_INTEGER, 1),
373 ASN1_IMP(LogotypeImageResolution, d.tableSize, ASN1_INTEGER, 2)
374 } ASN1_CHOICE_END(LogotypeImageResolution);
375
376 ASN1_SEQUENCE(LogotypeImageInfo) = {
377 ASN1_IMP_OPT(LogotypeImageInfo, type, ASN1_INTEGER, 0),
378 ASN1_SIMPLE(LogotypeImageInfo, fileSize, ASN1_INTEGER),
379 ASN1_SIMPLE(LogotypeImageInfo, xSize, ASN1_INTEGER),
380 ASN1_SIMPLE(LogotypeImageInfo, ySize, ASN1_INTEGER),
381 ASN1_OPT(LogotypeImageInfo, resolution, LogotypeImageResolution),
382 ASN1_IMP_OPT(LogotypeImageInfo, language, ASN1_IA5STRING, 4),
383 } ASN1_SEQUENCE_END(LogotypeImageInfo);
384
385 ASN1_SEQUENCE(LogotypeImage) = {
386 ASN1_SIMPLE(LogotypeImage, imageDetails, LogotypeDetails),
387 ASN1_OPT(LogotypeImage, imageInfo, LogotypeImageInfo)
388 } ASN1_SEQUENCE_END(LogotypeImage);
389
390 ASN1_SEQUENCE(LogotypeAudioInfo) = {
391 ASN1_SIMPLE(LogotypeAudioInfo, fileSize, ASN1_INTEGER),
392 ASN1_SIMPLE(LogotypeAudioInfo, playTime, ASN1_INTEGER),
393 ASN1_SIMPLE(LogotypeAudioInfo, channels, ASN1_INTEGER),
394 ASN1_IMP_OPT(LogotypeAudioInfo, sampleRate, ASN1_INTEGER, 3),
395 ASN1_IMP_OPT(LogotypeAudioInfo, language, ASN1_IA5STRING, 4)
396 } ASN1_SEQUENCE_END(LogotypeAudioInfo);
397
398 ASN1_SEQUENCE(LogotypeAudio) = {
399 ASN1_SIMPLE(LogotypeAudio, audioDetails, LogotypeDetails),
400 ASN1_OPT(LogotypeAudio, audioInfo, LogotypeAudioInfo)
401 } ASN1_SEQUENCE_END(LogotypeAudio);
402
403 ASN1_SEQUENCE(LogotypeData) = {
404 ASN1_SEQUENCE_OF_OPT(LogotypeData, image, LogotypeImage),
405 ASN1_IMP_SEQUENCE_OF_OPT(LogotypeData, audio, LogotypeAudio, 1)
406 } ASN1_SEQUENCE_END(LogotypeData);
407
408 ASN1_CHOICE(LogotypeInfo) = {
409 ASN1_IMP(LogotypeInfo, d.direct, LogotypeData, 0),
410 ASN1_IMP(LogotypeInfo, d.indirect, LogotypeReference, 1)
411 } ASN1_CHOICE_END(LogotypeInfo);
412
413 ASN1_SEQUENCE(OtherLogotypeInfo) = {
414 ASN1_SIMPLE(OtherLogotypeInfo, logotypeType, ASN1_OBJECT),
415 ASN1_SIMPLE(OtherLogotypeInfo, info, LogotypeInfo)
416 } ASN1_SEQUENCE_END(OtherLogotypeInfo);
417
418 ASN1_SEQUENCE(LogotypeExtn) = {
419 ASN1_EXP_SEQUENCE_OF_OPT(LogotypeExtn, communityLogos, LogotypeInfo, 0),
420 ASN1_EXP_OPT(LogotypeExtn, issuerLogo, LogotypeInfo, 1),
421 ASN1_EXP_OPT(LogotypeExtn, issuerLogo, LogotypeInfo, 2),
422 ASN1_EXP_SEQUENCE_OF_OPT(LogotypeExtn, otherLogos, OtherLogotypeInfo, 3)
423 } ASN1_SEQUENCE_END(LogotypeExtn);
424
425 IMPLEMENT_ASN1_FUNCTIONS(LogotypeExtn);
426
427 #ifdef OPENSSL_IS_BORINGSSL
428 #define sk_LogotypeInfo_num(st) \
429 sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeInfo) *, (st)))
430 #define sk_LogotypeInfo_value(st, i) (LogotypeInfo *) \
431 sk_value(CHECKED_CAST(_STACK *, const STACK_OF(LogotypeInfo) *, (st)), (i))
432 #define sk_LogotypeImage_num(st) \
433 sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeImage) *, (st)))
434 #define sk_LogotypeImage_value(st, i) (LogotypeImage *) \
435 sk_value(CHECKED_CAST(_STACK *, const STACK_OF(LogotypeImage) *, (st)), (i))
436 #define sk_LogotypeAudio_num(st) \
437 sk_num(CHECKED_CAST(_STACK *, STACK_OF(LogotypeAudio) *, (st)))
438 #define sk_LogotypeAudio_value(st, i) (LogotypeAudio *) \
439 sk_value(CHECK_CAST(_STACK *, const STACK_OF(LogotypeAudio) *, (st)), (i))
440 #define sk_HashAlgAndValue_num(st) \
441 sk_num(CHECKED_CAST(_STACK *, STACK_OF(HashAlgAndValue) *, (st)))
442 #define sk_HashAlgAndValue_value(st, i) (HashAlgAndValue *) \
443 sk_value(CHECKED_CAST(_STACK *, const STACK_OF(HashAlgAndValue) *, (st)), (i))
444 #define sk_ASN1_IA5STRING_num(st) \
445 sk_num(CHECKED_CAST(_STACK *, STACK_OF(ASN1_IA5STRING) *, (st)))
446 #define sk_ASN1_IA5STRING_value(st, i) (ASN1_IA5STRING *) \
447 sk_value(CHECKED_CAST(_STACK *, const STACK_OF(ASN1_IA5STRING) *, (st)), (i))
448 #else /* OPENSSL_IS_BORINGSSL */
449 #define sk_LogotypeInfo_num(st) SKM_sk_num(LogotypeInfo, (st))
450 #define sk_LogotypeInfo_value(st, i) SKM_sk_value(LogotypeInfo, (st), (i))
451 #define sk_LogotypeImage_num(st) SKM_sk_num(LogotypeImage, (st))
452 #define sk_LogotypeImage_value(st, i) SKM_sk_value(LogotypeImage, (st), (i))
453 #define sk_LogotypeAudio_num(st) SKM_sk_num(LogotypeAudio, (st))
454 #define sk_LogotypeAudio_value(st, i) SKM_sk_value(LogotypeAudio, (st), (i))
455 #define sk_HashAlgAndValue_num(st) SKM_sk_num(HashAlgAndValue, (st))
456 #define sk_HashAlgAndValue_value(st, i) SKM_sk_value(HashAlgAndValue, (st), (i))
457 #define sk_ASN1_IA5STRING_num(st) SKM_sk_num(ASN1_IA5STRING, (st))
458 #define sk_ASN1_IA5STRING_value(st, i) SKM_sk_value(ASN1_IA5STRING, (st), (i))
459 #endif /* OPENSSL_IS_BORINGSSL */
460
461
462 static void add_logo(struct http_ctx *ctx, struct http_cert *hcert,
463 HashAlgAndValue *hash, ASN1_IA5STRING *uri)
464 {
465 char txt[100];
466 int res, len;
467 struct http_logo *n;
468
469 if (hash == NULL || uri == NULL)
470 return;
471
472 res = OBJ_obj2txt(txt, sizeof(txt), hash->hashAlg->algorithm, 1);
473 if (res < 0 || res >= (int) sizeof(txt))
474 return;
475
476 n = os_realloc_array(hcert->logo, hcert->num_logo + 1,
477 sizeof(struct http_logo));
478 if (n == NULL)
479 return;
480 hcert->logo = n;
481 n = &hcert->logo[hcert->num_logo];
482 os_memset(n, 0, sizeof(*n));
483
484 n->alg_oid = os_strdup(txt);
485 if (n->alg_oid == NULL)
486 return;
487
488 n->hash_len = ASN1_STRING_length(hash->hashValue);
489 n->hash = os_malloc(n->hash_len);
490 if (n->hash == NULL) {
491 os_free(n->alg_oid);
492 return;
493 }
494 os_memcpy(n->hash, ASN1_STRING_data(hash->hashValue), n->hash_len);
495
496 len = ASN1_STRING_length(uri);
497 n->uri = os_malloc(len + 1);
498 if (n->uri == NULL) {
499 os_free(n->alg_oid);
500 os_free(n->hash);
501 return;
502 }
503 os_memcpy(n->uri, ASN1_STRING_data(uri), len);
504 n->uri[len] = '\0';
505
506 hcert->num_logo++;
507 }
508
509
510 static void add_logo_direct(struct http_ctx *ctx, struct http_cert *hcert,
511 LogotypeData *data)
512 {
513 int i, num;
514
515 if (data->image == NULL)
516 return;
517
518 num = sk_LogotypeImage_num(data->image);
519 for (i = 0; i < num; i++) {
520 LogotypeImage *image;
521 LogotypeDetails *details;
522 int j, hash_num, uri_num;
523 HashAlgAndValue *found_hash = NULL;
524
525 image = sk_LogotypeImage_value(data->image, i);
526 if (image == NULL)
527 continue;
528
529 details = image->imageDetails;
530 if (details == NULL)
531 continue;
532
533 hash_num = sk_HashAlgAndValue_num(details->logotypeHash);
534 for (j = 0; j < hash_num; j++) {
535 HashAlgAndValue *hash;
536 char txt[100];
537 int res;
538 hash = sk_HashAlgAndValue_value(details->logotypeHash,
539 j);
540 if (hash == NULL)
541 continue;
542 res = OBJ_obj2txt(txt, sizeof(txt),
543 hash->hashAlg->algorithm, 1);
544 if (res < 0 || res >= (int) sizeof(txt))
545 continue;
546 if (os_strcmp(txt, "2.16.840.1.101.3.4.2.1") == 0) {
547 found_hash = hash;
548 break;
549 }
550 }
551
552 if (!found_hash) {
553 wpa_printf(MSG_DEBUG, "OpenSSL: No SHA256 hash found for the logo");
554 continue;
555 }
556
557 uri_num = sk_ASN1_IA5STRING_num(details->logotypeURI);
558 for (j = 0; j < uri_num; j++) {
559 ASN1_IA5STRING *uri;
560 uri = sk_ASN1_IA5STRING_value(details->logotypeURI, j);
561 add_logo(ctx, hcert, found_hash, uri);
562 }
563 }
564 }
565
566
567 static void add_logo_indirect(struct http_ctx *ctx, struct http_cert *hcert,
568 LogotypeReference *ref)
569 {
570 int j, hash_num, uri_num;
571
572 hash_num = sk_HashAlgAndValue_num(ref->refStructHash);
573 uri_num = sk_ASN1_IA5STRING_num(ref->refStructURI);
574 if (hash_num != uri_num) {
575 wpa_printf(MSG_INFO, "Unexpected LogotypeReference array size difference %d != %d",
576 hash_num, uri_num);
577 return;
578 }
579
580 for (j = 0; j < hash_num; j++) {
581 HashAlgAndValue *hash;
582 ASN1_IA5STRING *uri;
583 hash = sk_HashAlgAndValue_value(ref->refStructHash, j);
584 uri = sk_ASN1_IA5STRING_value(ref->refStructURI, j);
585 add_logo(ctx, hcert, hash, uri);
586 }
587 }
588
589
590 static void i2r_HashAlgAndValue(HashAlgAndValue *hash, BIO *out, int indent)
591 {
592 int i;
593 const unsigned char *data;
594
595 BIO_printf(out, "%*shashAlg: ", indent, "");
596 i2a_ASN1_OBJECT(out, hash->hashAlg->algorithm);
597 BIO_printf(out, "\n");
598
599 BIO_printf(out, "%*shashValue: ", indent, "");
600 data = hash->hashValue->data;
601 for (i = 0; i < hash->hashValue->length; i++)
602 BIO_printf(out, "%s%02x", i > 0 ? ":" : "", data[i]);
603 BIO_printf(out, "\n");
604 }
605
606 static void i2r_LogotypeDetails(LogotypeDetails *details, BIO *out, int indent)
607 {
608 int i, num;
609
610 BIO_printf(out, "%*sLogotypeDetails\n", indent, "");
611 if (details->mediaType) {
612 BIO_printf(out, "%*smediaType: ", indent, "");
613 ASN1_STRING_print(out, details->mediaType);
614 BIO_printf(out, "\n");
615 }
616
617 num = details->logotypeHash ?
618 sk_HashAlgAndValue_num(details->logotypeHash) : 0;
619 for (i = 0; i < num; i++) {
620 HashAlgAndValue *hash;
621 hash = sk_HashAlgAndValue_value(details->logotypeHash, i);
622 i2r_HashAlgAndValue(hash, out, indent);
623 }
624
625 num = details->logotypeURI ?
626 sk_ASN1_IA5STRING_num(details->logotypeURI) : 0;
627 for (i = 0; i < num; i++) {
628 ASN1_IA5STRING *uri;
629 uri = sk_ASN1_IA5STRING_value(details->logotypeURI, i);
630 BIO_printf(out, "%*slogotypeURI: ", indent, "");
631 ASN1_STRING_print(out, uri);
632 BIO_printf(out, "\n");
633 }
634 }
635
636 static void i2r_LogotypeImageInfo(LogotypeImageInfo *info, BIO *out, int indent)
637 {
638 long val;
639
640 BIO_printf(out, "%*sLogotypeImageInfo\n", indent, "");
641 if (info->type) {
642 val = ASN1_INTEGER_get(info->type);
643 BIO_printf(out, "%*stype: %ld\n", indent, "", val);
644 } else {
645 BIO_printf(out, "%*stype: default (1)\n", indent, "");
646 }
647 val = ASN1_INTEGER_get(info->fileSize);
648 BIO_printf(out, "%*sfileSize: %ld\n", indent, "", val);
649 val = ASN1_INTEGER_get(info->xSize);
650 BIO_printf(out, "%*sxSize: %ld\n", indent, "", val);
651 val = ASN1_INTEGER_get(info->ySize);
652 BIO_printf(out, "%*sySize: %ld\n", indent, "", val);
653 if (info->resolution) {
654 BIO_printf(out, "%*sresolution [%d]\n", indent, "",
655 info->resolution->type);
656 switch (info->resolution->type) {
657 case 0:
658 val = ASN1_INTEGER_get(info->resolution->d.numBits);
659 BIO_printf(out, "%*snumBits: %ld\n", indent, "", val);
660 break;
661 case 1:
662 val = ASN1_INTEGER_get(info->resolution->d.tableSize);
663 BIO_printf(out, "%*stableSize: %ld\n", indent, "", val);
664 break;
665 }
666 }
667 if (info->language) {
668 BIO_printf(out, "%*slanguage: ", indent, "");
669 ASN1_STRING_print(out, info->language);
670 BIO_printf(out, "\n");
671 }
672 }
673
674 static void i2r_LogotypeImage(LogotypeImage *image, BIO *out, int indent)
675 {
676 BIO_printf(out, "%*sLogotypeImage\n", indent, "");
677 if (image->imageDetails) {
678 i2r_LogotypeDetails(image->imageDetails, out, indent + 4);
679 }
680 if (image->imageInfo) {
681 i2r_LogotypeImageInfo(image->imageInfo, out, indent + 4);
682 }
683 }
684
685 static void i2r_LogotypeData(LogotypeData *data, const char *title, BIO *out,
686 int indent)
687 {
688 int i, num;
689
690 BIO_printf(out, "%*s%s - LogotypeData\n", indent, "", title);
691
692 num = data->image ? sk_LogotypeImage_num(data->image) : 0;
693 for (i = 0; i < num; i++) {
694 LogotypeImage *image = sk_LogotypeImage_value(data->image, i);
695 i2r_LogotypeImage(image, out, indent + 4);
696 }
697
698 num = data->audio ? sk_LogotypeAudio_num(data->audio) : 0;
699 for (i = 0; i < num; i++) {
700 BIO_printf(out, "%*saudio: TODO\n", indent, "");
701 }
702 }
703
704 static void i2r_LogotypeReference(LogotypeReference *ref, const char *title,
705 BIO *out, int indent)
706 {
707 int i, hash_num, uri_num;
708
709 BIO_printf(out, "%*s%s - LogotypeReference\n", indent, "", title);
710
711 hash_num = ref->refStructHash ?
712 sk_HashAlgAndValue_num(ref->refStructHash) : 0;
713 uri_num = ref->refStructURI ?
714 sk_ASN1_IA5STRING_num(ref->refStructURI) : 0;
715 if (hash_num != uri_num) {
716 BIO_printf(out, "%*sUnexpected LogotypeReference array size difference %d != %d\n",
717 indent, "", hash_num, uri_num);
718 return;
719 }
720
721 for (i = 0; i < hash_num; i++) {
722 HashAlgAndValue *hash;
723 ASN1_IA5STRING *uri;
724
725 hash = sk_HashAlgAndValue_value(ref->refStructHash, i);
726 i2r_HashAlgAndValue(hash, out, indent);
727
728 uri = sk_ASN1_IA5STRING_value(ref->refStructURI, i);
729 BIO_printf(out, "%*srefStructURI: ", indent, "");
730 ASN1_STRING_print(out, uri);
731 BIO_printf(out, "\n");
732 }
733 }
734
735 static void i2r_LogotypeInfo(LogotypeInfo *info, const char *title, BIO *out,
736 int indent)
737 {
738 switch (info->type) {
739 case 0:
740 i2r_LogotypeData(info->d.direct, title, out, indent);
741 break;
742 case 1:
743 i2r_LogotypeReference(info->d.indirect, title, out, indent);
744 break;
745 }
746 }
747
748 static void debug_print_logotypeext(LogotypeExtn *logo)
749 {
750 BIO *out;
751 int i, num;
752 int indent = 0;
753
754 out = BIO_new_fp(stdout, BIO_NOCLOSE);
755 if (out == NULL)
756 return;
757
758 if (logo->communityLogos) {
759 num = sk_LogotypeInfo_num(logo->communityLogos);
760 for (i = 0; i < num; i++) {
761 LogotypeInfo *info;
762 info = sk_LogotypeInfo_value(logo->communityLogos, i);
763 i2r_LogotypeInfo(info, "communityLogo", out, indent);
764 }
765 }
766
767 if (logo->issuerLogo) {
768 i2r_LogotypeInfo(logo->issuerLogo, "issuerLogo", out, indent );
769 }
770
771 if (logo->subjectLogo) {
772 i2r_LogotypeInfo(logo->subjectLogo, "subjectLogo", out, indent);
773 }
774
775 if (logo->otherLogos) {
776 BIO_printf(out, "%*sotherLogos - TODO\n", indent, "");
777 }
778
779 BIO_free(out);
780 }
781
782
783 static void add_logotype_ext(struct http_ctx *ctx, struct http_cert *hcert,
784 X509 *cert)
785 {
786 ASN1_OBJECT *obj;
787 int pos;
788 X509_EXTENSION *ext;
789 ASN1_OCTET_STRING *os;
790 LogotypeExtn *logo;
791 const unsigned char *data;
792 int i, num;
793
794 obj = OBJ_txt2obj("1.3.6.1.5.5.7.1.12", 0);
795 if (obj == NULL)
796 return;
797
798 pos = X509_get_ext_by_OBJ(cert, obj, -1);
799 if (pos < 0) {
800 wpa_printf(MSG_INFO, "No logotype extension included");
801 return;
802 }
803
804 wpa_printf(MSG_INFO, "Parsing logotype extension");
805 ext = X509_get_ext(cert, pos);
806 if (!ext) {
807 wpa_printf(MSG_INFO, "Could not get logotype extension");
808 return;
809 }
810
811 os = X509_EXTENSION_get_data(ext);
812 if (os == NULL) {
813 wpa_printf(MSG_INFO, "Could not get logotype extension data");
814 return;
815 }
816
817 wpa_hexdump(MSG_DEBUG, "logotypeExtn",
818 ASN1_STRING_data(os), ASN1_STRING_length(os));
819
820 data = ASN1_STRING_data(os);
821 logo = d2i_LogotypeExtn(NULL, &data, ASN1_STRING_length(os));
822 if (logo == NULL) {
823 wpa_printf(MSG_INFO, "Failed to parse logotypeExtn");
824 return;
825 }
826
827 if (wpa_debug_level < MSG_INFO)
828 debug_print_logotypeext(logo);
829
830 if (!logo->communityLogos) {
831 wpa_printf(MSG_INFO, "No communityLogos included");
832 LogotypeExtn_free(logo);
833 return;
834 }
835
836 num = sk_LogotypeInfo_num(logo->communityLogos);
837 for (i = 0; i < num; i++) {
838 LogotypeInfo *info;
839 info = sk_LogotypeInfo_value(logo->communityLogos, i);
840 switch (info->type) {
841 case 0:
842 add_logo_direct(ctx, hcert, info->d.direct);
843 break;
844 case 1:
845 add_logo_indirect(ctx, hcert, info->d.indirect);
846 break;
847 }
848 }
849
850 LogotypeExtn_free(logo);
851 }
852
853
854 static void parse_cert(struct http_ctx *ctx, struct http_cert *hcert,
855 X509 *cert, GENERAL_NAMES **names)
856 {
857 os_memset(hcert, 0, sizeof(*hcert));
858
859 *names = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
860 if (*names)
861 add_alt_names(ctx, hcert, *names);
862
863 add_logotype_ext(ctx, hcert, cert);
864 }
865
866
867 static void parse_cert_free(struct http_cert *hcert, GENERAL_NAMES *names)
868 {
869 unsigned int i;
870
871 for (i = 0; i < hcert->num_dnsname; i++)
872 OPENSSL_free(hcert->dnsname[i]);
873 os_free(hcert->dnsname);
874
875 for (i = 0; i < hcert->num_othername; i++)
876 os_free(hcert->othername[i].oid);
877 os_free(hcert->othername);
878
879 for (i = 0; i < hcert->num_logo; i++) {
880 os_free(hcert->logo[i].alg_oid);
881 os_free(hcert->logo[i].hash);
882 os_free(hcert->logo[i].uri);
883 }
884 os_free(hcert->logo);
885
886 sk_GENERAL_NAME_pop_free(names, GENERAL_NAME_free);
887 }
888
889
890 static int validate_server_cert(struct http_ctx *ctx, X509 *cert)
891 {
892 GENERAL_NAMES *names;
893 struct http_cert hcert;
894 int ret;
895
896 if (ctx->cert_cb == NULL) {
897 wpa_printf(MSG_DEBUG, "%s: no cert_cb configured", __func__);
898 return 0;
899 }
900
901 if (0) {
902 BIO *out;
903 out = BIO_new_fp(stdout, BIO_NOCLOSE);
904 X509_print_ex(out, cert, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
905 BIO_free(out);
906 }
907
908 parse_cert(ctx, &hcert, cert, &names);
909 ret = ctx->cert_cb(ctx->cert_cb_ctx, &hcert);
910 parse_cert_free(&hcert, names);
911
912 return ret;
913 }
914
915
916 void http_parse_x509_certificate(struct http_ctx *ctx, const char *fname)
917 {
918 BIO *in, *out;
919 X509 *cert;
920 GENERAL_NAMES *names;
921 struct http_cert hcert;
922 unsigned int i;
923
924 in = BIO_new_file(fname, "r");
925 if (in == NULL) {
926 wpa_printf(MSG_ERROR, "Could not read '%s'", fname);
927 return;
928 }
929
930 cert = d2i_X509_bio(in, NULL);
931 BIO_free(in);
932
933 if (cert == NULL) {
934 wpa_printf(MSG_ERROR, "Could not parse certificate");
935 return;
936 }
937
938 out = BIO_new_fp(stdout, BIO_NOCLOSE);
939 if (out) {
940 X509_print_ex(out, cert, XN_FLAG_COMPAT,
941 X509_FLAG_COMPAT);
942 BIO_free(out);
943 }
944
945 wpa_printf(MSG_INFO, "Additional parsing information:");
946 parse_cert(ctx, &hcert, cert, &names);
947 for (i = 0; i < hcert.num_othername; i++) {
948 if (os_strcmp(hcert.othername[i].oid,
949 "1.3.6.1.4.1.40808.1.1.1") == 0) {
950 char *name = os_zalloc(hcert.othername[i].len + 1);
951 if (name) {
952 os_memcpy(name, hcert.othername[i].data,
953 hcert.othername[i].len);
954 wpa_printf(MSG_INFO,
955 "id-wfa-hotspot-friendlyName: %s",
956 name);
957 os_free(name);
958 }
959 wpa_hexdump_ascii(MSG_INFO,
960 "id-wfa-hotspot-friendlyName",
961 hcert.othername[i].data,
962 hcert.othername[i].len);
963 } else {
964 wpa_printf(MSG_INFO, "subjAltName[othername]: oid=%s",
965 hcert.othername[i].oid);
966 wpa_hexdump_ascii(MSG_INFO, "unknown othername",
967 hcert.othername[i].data,
968 hcert.othername[i].len);
969 }
970 }
971 parse_cert_free(&hcert, names);
972
973 X509_free(cert);
974 }
975
976
977 static int curl_cb_ssl_verify(int preverify_ok, X509_STORE_CTX *x509_ctx)
978 {
979 struct http_ctx *ctx;
980 X509 *cert;
981 int err, depth;
982 char buf[256];
983 X509_NAME *name;
984 const char *err_str;
985 SSL *ssl;
986 SSL_CTX *ssl_ctx;
987
988 ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
989 SSL_get_ex_data_X509_STORE_CTX_idx());
990 ssl_ctx = ssl->ctx;
991 ctx = SSL_CTX_get_app_data(ssl_ctx);
992
993 wpa_printf(MSG_DEBUG, "curl_cb_ssl_verify, preverify_ok: %d",
994 preverify_ok);
995
996 err = X509_STORE_CTX_get_error(x509_ctx);
997 err_str = X509_verify_cert_error_string(err);
998 depth = X509_STORE_CTX_get_error_depth(x509_ctx);
999 cert = X509_STORE_CTX_get_current_cert(x509_ctx);
1000 if (!cert) {
1001 wpa_printf(MSG_INFO, "No server certificate available");
1002 ctx->last_err = "No server certificate available";
1003 return 0;
1004 }
1005
1006 if (depth == 0)
1007 ctx->peer_cert = cert;
1008 else if (depth == 1)
1009 ctx->peer_issuer = cert;
1010 else if (depth == 2)
1011 ctx->peer_issuer_issuer = cert;
1012
1013 name = X509_get_subject_name(cert);
1014 X509_NAME_oneline(name, buf, sizeof(buf));
1015 wpa_printf(MSG_INFO, "Server certificate chain - depth=%d err=%d (%s) subject=%s",
1016 depth, err, err_str, buf);
1017 debug_dump_cert("Server certificate chain - certificate", cert);
1018
1019 if (depth == 0 && preverify_ok && validate_server_cert(ctx, cert) < 0)
1020 return 0;
1021
1022 #ifdef OPENSSL_IS_BORINGSSL
1023 if (depth == 0 && ctx->ocsp != NO_OCSP && preverify_ok) {
1024 enum ocsp_result res;
1025
1026 res = check_ocsp_resp(ssl_ctx, ssl, cert, ctx->peer_issuer,
1027 ctx->peer_issuer_issuer);
1028 if (res == OCSP_REVOKED) {
1029 preverify_ok = 0;
1030 wpa_printf(MSG_INFO, "OCSP: certificate revoked");
1031 if (err == X509_V_OK)
1032 X509_STORE_CTX_set_error(
1033 x509_ctx, X509_V_ERR_CERT_REVOKED);
1034 } else if (res != OCSP_GOOD && (ctx->ocsp == MANDATORY_OCSP)) {
1035 preverify_ok = 0;
1036 wpa_printf(MSG_INFO,
1037 "OCSP: bad certificate status response");
1038 }
1039 }
1040 #endif /* OPENSSL_IS_BORINGSSL */
1041
1042 if (!preverify_ok)
1043 ctx->last_err = "TLS validation failed";
1044
1045 return preverify_ok;
1046 }
1047
1048
1049 #ifdef HAVE_OCSP
1050
1051 static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
1052 {
1053 BIO *out;
1054 size_t rlen;
1055 char *txt;
1056 int res;
1057
1058 out = BIO_new(BIO_s_mem());
1059 if (!out)
1060 return;
1061
1062 OCSP_RESPONSE_print(out, rsp, 0);
1063 rlen = BIO_ctrl_pending(out);
1064 txt = os_malloc(rlen + 1);
1065 if (!txt) {
1066 BIO_free(out);
1067 return;
1068 }
1069
1070 res = BIO_read(out, txt, rlen);
1071 if (res > 0) {
1072 txt[res] = '\0';
1073 wpa_printf(MSG_MSGDUMP, "OpenSSL: OCSP Response\n%s", txt);
1074 }
1075 os_free(txt);
1076 BIO_free(out);
1077 }
1078
1079
1080 static void tls_show_errors(const char *func, const char *txt)
1081 {
1082 unsigned long err;
1083
1084 wpa_printf(MSG_DEBUG, "OpenSSL: %s - %s %s",
1085 func, txt, ERR_error_string(ERR_get_error(), NULL));
1086
1087 while ((err = ERR_get_error())) {
1088 wpa_printf(MSG_DEBUG, "OpenSSL: pending error: %s",
1089 ERR_error_string(err, NULL));
1090 }
1091 }
1092
1093
1094 static int ocsp_resp_cb(SSL *s, void *arg)
1095 {
1096 struct http_ctx *ctx = arg;
1097 const unsigned char *p;
1098 int len, status, reason;
1099 OCSP_RESPONSE *rsp;
1100 OCSP_BASICRESP *basic;
1101 OCSP_CERTID *id;
1102 ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
1103 X509_STORE *store;
1104 STACK_OF(X509) *certs = NULL;
1105
1106 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
1107 if (!p) {
1108 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
1109 if (ctx->ocsp == MANDATORY_OCSP)
1110 ctx->last_err = "No OCSP response received";
1111 return (ctx->ocsp == MANDATORY_OCSP) ? 0 : 1;
1112 }
1113
1114 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
1115
1116 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
1117 if (!rsp) {
1118 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
1119 ctx->last_err = "Failed to parse OCSP response";
1120 return 0;
1121 }
1122
1123 ocsp_debug_print_resp(rsp);
1124
1125 status = OCSP_response_status(rsp);
1126 if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
1127 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
1128 status, OCSP_response_status_str(status));
1129 ctx->last_err = "OCSP responder error";
1130 return 0;
1131 }
1132
1133 basic = OCSP_response_get1_basic(rsp);
1134 if (!basic) {
1135 wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
1136 ctx->last_err = "Could not find BasicOCSPResponse";
1137 return 0;
1138 }
1139
1140 store = SSL_CTX_get_cert_store(s->ctx);
1141 if (ctx->peer_issuer) {
1142 wpa_printf(MSG_DEBUG, "OpenSSL: Add issuer");
1143 debug_dump_cert("OpenSSL: Issuer certificate",
1144 ctx->peer_issuer);
1145
1146 if (X509_STORE_add_cert(store, ctx->peer_issuer) != 1) {
1147 tls_show_errors(__func__,
1148 "OpenSSL: Could not add issuer to certificate store");
1149 }
1150 certs = sk_X509_new_null();
1151 if (certs) {
1152 X509 *cert;
1153 cert = X509_dup(ctx->peer_issuer);
1154 if (cert && !sk_X509_push(certs, cert)) {
1155 tls_show_errors(
1156 __func__,
1157 "OpenSSL: Could not add issuer to OCSP responder trust store");
1158 X509_free(cert);
1159 sk_X509_free(certs);
1160 certs = NULL;
1161 }
1162 if (certs && ctx->peer_issuer_issuer) {
1163 cert = X509_dup(ctx->peer_issuer_issuer);
1164 if (cert && !sk_X509_push(certs, cert)) {
1165 tls_show_errors(
1166 __func__,
1167 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
1168 X509_free(cert);
1169 }
1170 }
1171 }
1172 }
1173
1174 status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
1175 sk_X509_pop_free(certs, X509_free);
1176 if (status <= 0) {
1177 tls_show_errors(__func__,
1178 "OpenSSL: OCSP response failed verification");
1179 OCSP_BASICRESP_free(basic);
1180 OCSP_RESPONSE_free(rsp);
1181 ctx->last_err = "OCSP response failed verification";
1182 return 0;
1183 }
1184
1185 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
1186
1187 if (!ctx->peer_cert) {
1188 wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
1189 OCSP_BASICRESP_free(basic);
1190 OCSP_RESPONSE_free(rsp);
1191 ctx->last_err = "Peer certificate not available for OCSP status check";
1192 return 0;
1193 }
1194
1195 if (!ctx->peer_issuer) {
1196 wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
1197 OCSP_BASICRESP_free(basic);
1198 OCSP_RESPONSE_free(rsp);
1199 ctx->last_err = "Peer issuer certificate not available for OCSP status check";
1200 return 0;
1201 }
1202
1203 id = OCSP_cert_to_id(NULL, ctx->peer_cert, ctx->peer_issuer);
1204 if (!id) {
1205 wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier");
1206 OCSP_BASICRESP_free(basic);
1207 OCSP_RESPONSE_free(rsp);
1208 ctx->last_err = "Could not create OCSP certificate identifier";
1209 return 0;
1210 }
1211
1212 if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
1213 &this_update, &next_update)) {
1214 wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
1215 (ctx->ocsp == MANDATORY_OCSP) ? "" :
1216 " (OCSP not required)");
1217 OCSP_CERTID_free(id);
1218 OCSP_BASICRESP_free(basic);
1219 OCSP_RESPONSE_free(rsp);
1220 if (ctx->ocsp == MANDATORY_OCSP)
1221
1222 ctx->last_err = "Could not find current server certificate from OCSP response";
1223 return (ctx->ocsp == MANDATORY_OCSP) ? 0 : 1;
1224 }
1225 OCSP_CERTID_free(id);
1226
1227 if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
1228 tls_show_errors(__func__, "OpenSSL: OCSP status times invalid");
1229 OCSP_BASICRESP_free(basic);
1230 OCSP_RESPONSE_free(rsp);
1231 ctx->last_err = "OCSP status times invalid";
1232 return 0;
1233 }
1234
1235 OCSP_BASICRESP_free(basic);
1236 OCSP_RESPONSE_free(rsp);
1237
1238 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
1239 OCSP_cert_status_str(status));
1240
1241 if (status == V_OCSP_CERTSTATUS_GOOD)
1242 return 1;
1243 if (status == V_OCSP_CERTSTATUS_REVOKED) {
1244 ctx->last_err = "Server certificate has been revoked";
1245 return 0;
1246 }
1247 if (ctx->ocsp == MANDATORY_OCSP) {
1248 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
1249 ctx->last_err = "OCSP status unknown";
1250 return 0;
1251 }
1252 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
1253 return 1;
1254 }
1255
1256
1257 static SSL_METHOD patch_ssl_method;
1258 static const SSL_METHOD *real_ssl_method;
1259
1260 static int curl_patch_ssl_new(SSL *s)
1261 {
1262 SSL_CTX *ssl = s->ctx;
1263 int ret;
1264
1265 ssl->method = real_ssl_method;
1266 s->method = real_ssl_method;
1267
1268 ret = s->method->ssl_new(s);
1269 SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp);
1270
1271 return ret;
1272 }
1273
1274 #endif /* HAVE_OCSP */
1275
1276
1277 static CURLcode curl_cb_ssl(CURL *curl, void *sslctx, void *parm)
1278 {
1279 struct http_ctx *ctx = parm;
1280 SSL_CTX *ssl = sslctx;
1281
1282 wpa_printf(MSG_DEBUG, "curl_cb_ssl");
1283 SSL_CTX_set_app_data(ssl, ctx);
1284 SSL_CTX_set_verify(ssl, SSL_VERIFY_PEER, curl_cb_ssl_verify);
1285
1286 #ifdef HAVE_OCSP
1287 if (ctx->ocsp != NO_OCSP) {
1288 SSL_CTX_set_tlsext_status_cb(ssl, ocsp_resp_cb);
1289 SSL_CTX_set_tlsext_status_arg(ssl, ctx);
1290
1291 /*
1292 * Use a temporary SSL_METHOD to get a callback on SSL_new()
1293 * from libcurl since there is no proper callback registration
1294 * available for this.
1295 */
1296 os_memset(&patch_ssl_method, 0, sizeof(patch_ssl_method));
1297 patch_ssl_method.ssl_new = curl_patch_ssl_new;
1298 real_ssl_method = ssl->method;
1299 ssl->method = &patch_ssl_method;
1300 }
1301 #endif /* HAVE_OCSP */
1302
1303 return CURLE_OK;
1304 }
1305
1306 #endif /* EAP_TLS_OPENSSL */
1307
1308
1309 static CURL * setup_curl_post(struct http_ctx *ctx, const char *address,
1310 const char *ca_fname, const char *username,
1311 const char *password, const char *client_cert,
1312 const char *client_key)
1313 {
1314 CURL *curl;
1315 #ifdef EAP_TLS_OPENSSL
1316 const char *extra = " tls=openssl";
1317 #else /* EAP_TLS_OPENSSL */
1318 const char *extra = "";
1319 #endif /* EAP_TLS_OPENSSL */
1320
1321 wpa_printf(MSG_DEBUG, "Start HTTP client: address=%s ca_fname=%s "
1322 "username=%s%s", address, ca_fname, username, extra);
1323
1324 curl = curl_easy_init();
1325 if (curl == NULL)
1326 return NULL;
1327
1328 curl_easy_setopt(curl, CURLOPT_URL, address);
1329 curl_easy_setopt(curl, CURLOPT_POST, 1L);
1330 if (ca_fname) {
1331 curl_easy_setopt(curl, CURLOPT_CAINFO, ca_fname);
1332 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
1333 #ifdef EAP_TLS_OPENSSL
1334 curl_easy_setopt(curl, CURLOPT_SSL_CTX_FUNCTION, curl_cb_ssl);
1335 curl_easy_setopt(curl, CURLOPT_SSL_CTX_DATA, ctx);
1336 #ifdef OPENSSL_IS_BORINGSSL
1337 /* For now, using the CURLOPT_SSL_VERIFYSTATUS option only
1338 * with BoringSSL since the OpenSSL specific callback hack to
1339 * enable OCSP is not available with BoringSSL. The OCSP
1340 * implementation within libcurl is not sufficient for the
1341 * Hotspot 2.0 OSU needs, so cannot use this with OpenSSL.
1342 */
1343 if (ctx->ocsp != NO_OCSP)
1344 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYSTATUS, 1L);
1345 #endif /* OPENSSL_IS_BORINGSSL */
1346 #endif /* EAP_TLS_OPENSSL */
1347 } else {
1348 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
1349 }
1350 if (client_cert && client_key) {
1351 curl_easy_setopt(curl, CURLOPT_SSLCERT, client_cert);
1352 curl_easy_setopt(curl, CURLOPT_SSLKEY, client_key);
1353 }
1354 /* TODO: use curl_easy_getinfo() with CURLINFO_CERTINFO to fetch
1355 * information about the server certificate */
1356 curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
1357 curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, curl_cb_debug);
1358 curl_easy_setopt(curl, CURLOPT_DEBUGDATA, ctx);
1359 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_cb_write);
1360 curl_easy_setopt(curl, CURLOPT_WRITEDATA, ctx);
1361 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1362 if (username) {
1363 curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_ANYSAFE);
1364 curl_easy_setopt(curl, CURLOPT_USERNAME, username);
1365 curl_easy_setopt(curl, CURLOPT_PASSWORD, password);
1366 }
1367
1368 return curl;
1369 }
1370
1371
1372 static int post_init_client(struct http_ctx *ctx, const char *address,
1373 const char *ca_fname, const char *username,
1374 const char *password, const char *client_cert,
1375 const char *client_key)
1376 {
1377 char *pos;
1378 int count;
1379
1380 clone_str(&ctx->svc_address, address);
1381 clone_str(&ctx->svc_ca_fname, ca_fname);
1382 clone_str(&ctx->svc_username, username);
1383 clone_str(&ctx->svc_password, password);
1384 clone_str(&ctx->svc_client_cert, client_cert);
1385 clone_str(&ctx->svc_client_key, client_key);
1386
1387 /*
1388 * Workaround for Apache "Hostname 'FOO' provided via SNI and hostname
1389 * 'foo' provided via HTTP are different.
1390 */
1391 for (count = 0, pos = ctx->svc_address; count < 3 && pos && *pos;
1392 pos++) {
1393 if (*pos == '/')
1394 count++;
1395 *pos = tolower(*pos);
1396 }
1397
1398 ctx->curl = setup_curl_post(ctx, ctx->svc_address, ca_fname, username,
1399 password, client_cert, client_key);
1400 if (ctx->curl == NULL)
1401 return -1;
1402
1403 return 0;
1404 }
1405
1406
1407 int soap_init_client(struct http_ctx *ctx, const char *address,
1408 const char *ca_fname, const char *username,
1409 const char *password, const char *client_cert,
1410 const char *client_key)
1411 {
1412 if (post_init_client(ctx, address, ca_fname, username, password,
1413 client_cert, client_key) < 0)
1414 return -1;
1415
1416 ctx->curl_hdr = curl_slist_append(ctx->curl_hdr,
1417 "Content-Type: application/soap+xml");
1418 ctx->curl_hdr = curl_slist_append(ctx->curl_hdr, "SOAPAction: ");
1419 ctx->curl_hdr = curl_slist_append(ctx->curl_hdr, "Expect:");
1420 curl_easy_setopt(ctx->curl, CURLOPT_HTTPHEADER, ctx->curl_hdr);
1421
1422 return 0;
1423 }
1424
1425
1426 int soap_reinit_client(struct http_ctx *ctx)
1427 {
1428 char *address = NULL;
1429 char *ca_fname = NULL;
1430 char *username = NULL;
1431 char *password = NULL;
1432 char *client_cert = NULL;
1433 char *client_key = NULL;
1434 int ret;
1435
1436 clear_curl(ctx);
1437
1438 clone_str(&address, ctx->svc_address);
1439 clone_str(&ca_fname, ctx->svc_ca_fname);
1440 clone_str(&username, ctx->svc_username);
1441 clone_str(&password, ctx->svc_password);
1442 clone_str(&client_cert, ctx->svc_client_cert);
1443 clone_str(&client_key, ctx->svc_client_key);
1444
1445 ret = soap_init_client(ctx, address, ca_fname, username, password,
1446 client_cert, client_key);
1447 os_free(address);
1448 os_free(ca_fname);
1449 str_clear_free(username);
1450 str_clear_free(password);
1451 os_free(client_cert);
1452 os_free(client_key);
1453 return ret;
1454 }
1455
1456
1457 static void free_curl_buf(struct http_ctx *ctx)
1458 {
1459 os_free(ctx->curl_buf);
1460 ctx->curl_buf = NULL;
1461 ctx->curl_buf_len = 0;
1462 }
1463
1464
1465 xml_node_t * soap_send_receive(struct http_ctx *ctx, xml_node_t *node)
1466 {
1467 char *str;
1468 xml_node_t *envelope, *ret, *resp, *n;
1469 CURLcode res;
1470 long http = 0;
1471
1472 ctx->last_err = NULL;
1473
1474 wpa_printf(MSG_DEBUG, "SOAP: Sending message");
1475 envelope = soap_build_envelope(ctx->xml, node);
1476 str = xml_node_to_str(ctx->xml, envelope);
1477 xml_node_free(ctx->xml, envelope);
1478 wpa_printf(MSG_MSGDUMP, "SOAP[%s]", str);
1479
1480 curl_easy_setopt(ctx->curl, CURLOPT_POSTFIELDS, str);
1481 free_curl_buf(ctx);
1482
1483 res = curl_easy_perform(ctx->curl);
1484 if (res != CURLE_OK) {
1485 if (!ctx->last_err)
1486 ctx->last_err = curl_easy_strerror(res);
1487 wpa_printf(MSG_ERROR, "curl_easy_perform() failed: %s",
1488 ctx->last_err);
1489 os_free(str);
1490 free_curl_buf(ctx);
1491 return NULL;
1492 }
1493 os_free(str);
1494
1495 curl_easy_getinfo(ctx->curl, CURLINFO_RESPONSE_CODE, &http);
1496 wpa_printf(MSG_DEBUG, "SOAP: Server response code %ld", http);
1497 if (http != 200) {
1498 ctx->last_err = "HTTP download failed";
1499 wpa_printf(MSG_INFO, "HTTP download failed - code %ld", http);
1500 free_curl_buf(ctx);
1501 return NULL;
1502 }
1503
1504 if (ctx->curl_buf == NULL)
1505 return NULL;
1506
1507 wpa_printf(MSG_MSGDUMP, "Server response:\n%s", ctx->curl_buf);
1508 resp = xml_node_from_buf(ctx->xml, ctx->curl_buf);
1509 free_curl_buf(ctx);
1510 if (resp == NULL) {
1511 wpa_printf(MSG_INFO, "Could not parse SOAP response");
1512 ctx->last_err = "Could not parse SOAP response";
1513 return NULL;
1514 }
1515
1516 ret = soap_get_body(ctx->xml, resp);
1517 if (ret == NULL) {
1518 wpa_printf(MSG_INFO, "Could not get SOAP body");
1519 ctx->last_err = "Could not get SOAP body";
1520 return NULL;
1521 }
1522
1523 wpa_printf(MSG_DEBUG, "SOAP body localname: '%s'",
1524 xml_node_get_localname(ctx->xml, ret));
1525 n = xml_node_copy(ctx->xml, ret);
1526 xml_node_free(ctx->xml, resp);
1527
1528 return n;
1529 }
1530
1531
1532 struct http_ctx * http_init_ctx(void *upper_ctx, struct xml_node_ctx *xml_ctx)
1533 {
1534 struct http_ctx *ctx;
1535
1536 ctx = os_zalloc(sizeof(*ctx));
1537 if (ctx == NULL)
1538 return NULL;
1539 ctx->ctx = upper_ctx;
1540 ctx->xml = xml_ctx;
1541 ctx->ocsp = OPTIONAL_OCSP;
1542
1543 curl_global_init(CURL_GLOBAL_ALL);
1544
1545 return ctx;
1546 }
1547
1548
1549 void http_ocsp_set(struct http_ctx *ctx, int val)
1550 {
1551 if (val == 0)
1552 ctx->ocsp = NO_OCSP;
1553 else if (val == 1)
1554 ctx->ocsp = OPTIONAL_OCSP;
1555 if (val == 2)
1556 ctx->ocsp = MANDATORY_OCSP;
1557 }
1558
1559
1560 void http_deinit_ctx(struct http_ctx *ctx)
1561 {
1562 clear_curl(ctx);
1563 os_free(ctx->curl_buf);
1564 curl_global_cleanup();
1565
1566 os_free(ctx->svc_address);
1567 os_free(ctx->svc_ca_fname);
1568 str_clear_free(ctx->svc_username);
1569 str_clear_free(ctx->svc_password);
1570 os_free(ctx->svc_client_cert);
1571 os_free(ctx->svc_client_key);
1572
1573 os_free(ctx);
1574 }
1575
1576
1577 int http_download_file(struct http_ctx *ctx, const char *url,
1578 const char *fname, const char *ca_fname)
1579 {
1580 CURL *curl;
1581 FILE *f;
1582 CURLcode res;
1583 long http = 0;
1584
1585 ctx->last_err = NULL;
1586
1587 wpa_printf(MSG_DEBUG, "curl: Download file from %s to %s (ca=%s)",
1588 url, fname, ca_fname);
1589 curl = curl_easy_init();
1590 if (curl == NULL)
1591 return -1;
1592
1593 f = fopen(fname, "wb");
1594 if (f == NULL) {
1595 curl_easy_cleanup(curl);
1596 return -1;
1597 }
1598
1599 curl_easy_setopt(curl, CURLOPT_URL, url);
1600 if (ca_fname) {
1601 curl_easy_setopt(curl, CURLOPT_CAINFO, ca_fname);
1602 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);
1603 curl_easy_setopt(curl, CURLOPT_CERTINFO, 1L);
1604 } else {
1605 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
1606 }
1607 curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, curl_cb_debug);
1608 curl_easy_setopt(curl, CURLOPT_DEBUGDATA, ctx);
1609 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
1610 curl_easy_setopt(curl, CURLOPT_WRITEDATA, f);
1611 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
1612
1613 res = curl_easy_perform(curl);
1614 if (res != CURLE_OK) {
1615 if (!ctx->last_err)
1616 ctx->last_err = curl_easy_strerror(res);
1617 wpa_printf(MSG_ERROR, "curl_easy_perform() failed: %s",
1618 ctx->last_err);
1619 curl_easy_cleanup(curl);
1620 fclose(f);
1621 return -1;
1622 }
1623
1624 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http);
1625 wpa_printf(MSG_DEBUG, "curl: Server response code %ld", http);
1626 if (http != 200) {
1627 ctx->last_err = "HTTP download failed";
1628 wpa_printf(MSG_INFO, "HTTP download failed - code %ld", http);
1629 curl_easy_cleanup(curl);
1630 fclose(f);
1631 return -1;
1632 }
1633
1634 curl_easy_cleanup(curl);
1635 fclose(f);
1636
1637 return 0;
1638 }
1639
1640
1641 char * http_post(struct http_ctx *ctx, const char *url, const char *data,
1642 const char *content_type, const char *ext_hdr,
1643 const char *ca_fname,
1644 const char *username, const char *password,
1645 const char *client_cert, const char *client_key,
1646 size_t *resp_len)
1647 {
1648 long http = 0;
1649 CURLcode res;
1650 char *ret;
1651 CURL *curl;
1652 struct curl_slist *curl_hdr = NULL;
1653
1654 ctx->last_err = NULL;
1655 wpa_printf(MSG_DEBUG, "curl: HTTP POST to %s", url);
1656 curl = setup_curl_post(ctx, url, ca_fname, username, password,
1657 client_cert, client_key);
1658 if (curl == NULL)
1659 return NULL;
1660
1661 if (content_type) {
1662 char ct[200];
1663 snprintf(ct, sizeof(ct), "Content-Type: %s", content_type);
1664 curl_hdr = curl_slist_append(curl_hdr, ct);
1665 }
1666 if (ext_hdr)
1667 curl_hdr = curl_slist_append(curl_hdr, ext_hdr);
1668 curl_easy_setopt(curl, CURLOPT_HTTPHEADER, curl_hdr);
1669
1670 curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data);
1671 free_curl_buf(ctx);
1672
1673 res = curl_easy_perform(curl);
1674 if (res != CURLE_OK) {
1675 if (!ctx->last_err)
1676 ctx->last_err = curl_easy_strerror(res);
1677 wpa_printf(MSG_ERROR, "curl_easy_perform() failed: %s",
1678 ctx->last_err);
1679 free_curl_buf(ctx);
1680 return NULL;
1681 }
1682
1683 curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &http);
1684 wpa_printf(MSG_DEBUG, "curl: Server response code %ld", http);
1685 if (http != 200) {
1686 ctx->last_err = "HTTP POST failed";
1687 wpa_printf(MSG_INFO, "HTTP POST failed - code %ld", http);
1688 free_curl_buf(ctx);
1689 return NULL;
1690 }
1691
1692 if (ctx->curl_buf == NULL)
1693 return NULL;
1694
1695 ret = ctx->curl_buf;
1696 if (resp_len)
1697 *resp_len = ctx->curl_buf_len;
1698 ctx->curl_buf = NULL;
1699 ctx->curl_buf_len = 0;
1700
1701 wpa_printf(MSG_MSGDUMP, "Server response:\n%s", ret);
1702
1703 return ret;
1704 }
1705
1706
1707 void http_set_cert_cb(struct http_ctx *ctx,
1708 int (*cb)(void *ctx, struct http_cert *cert),
1709 void *cb_ctx)
1710 {
1711 ctx->cert_cb = cb;
1712 ctx->cert_cb_ctx = cb_ctx;
1713 }
1714
1715
1716 const char * http_get_err(struct http_ctx *ctx)
1717 {
1718 return ctx->last_err;
1719 }
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