]>
Commit | Line | Data |
---|---|---|
cc754834 | 1 | /* |
63aefcd5 MS |
2 | * TLS support for CUPS on Windows using the Security Support Provider |
3 | * Interface (SSPI). | |
321d8d57 | 4 | * |
378eeedf | 5 | * Copyright 2010-2018 by Apple Inc. |
cc754834 | 6 | * |
e3101897 | 7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
cc754834 MS |
8 | */ |
9 | ||
ebb24a07 MS |
10 | /**** This file is included from tls.c ****/ |
11 | ||
cc754834 MS |
12 | /* |
13 | * Include necessary headers... | |
14 | */ | |
15 | ||
cc754834 | 16 | #include "debug-private.h" |
321d8d57 | 17 | |
cc754834 | 18 | |
2ece34a9 MS |
19 | /* |
20 | * Include necessary libraries... | |
21 | */ | |
22 | ||
cc754834 MS |
23 | #pragma comment(lib, "Crypt32.lib") |
24 | #pragma comment(lib, "Secur32.lib") | |
25 | #pragma comment(lib, "Ws2_32.lib") | |
26 | ||
27 | ||
2ece34a9 MS |
28 | /* |
29 | * Constants... | |
30 | */ | |
31 | ||
32 | #ifndef SECURITY_FLAG_IGNORE_UNKNOWN_CA | |
cc754834 | 33 | # define SECURITY_FLAG_IGNORE_UNKNOWN_CA 0x00000100 /* Untrusted root */ |
2ece34a9 | 34 | #endif /* SECURITY_FLAG_IGNORE_UNKNOWN_CA */ |
cc754834 | 35 | |
9041146f MS |
36 | #ifndef SECURITY_FLAG_IGNORE_CERT_CN_INVALID |
37 | # define SECURITY_FLAG_IGNORE_CERT_CN_INVALID 0x00001000 /* Common name does not match */ | |
38 | #endif /* !SECURITY_FLAG_IGNORE_CERT_CN_INVALID */ | |
39 | ||
2ece34a9 | 40 | #ifndef SECURITY_FLAG_IGNORE_CERT_DATE_INVALID |
cc754834 | 41 | # define SECURITY_FLAG_IGNORE_CERT_DATE_INVALID 0x00002000 /* Expired X509 Cert. */ |
2ece34a9 MS |
42 | #endif /* !SECURITY_FLAG_IGNORE_CERT_DATE_INVALID */ |
43 | ||
63aefcd5 MS |
44 | |
45 | /* | |
46 | * Local globals... | |
47 | */ | |
48 | ||
8f1fbdec MS |
49 | static int tls_options = -1,/* Options for TLS connections */ |
50 | tls_min_version = _HTTP_TLS_1_0, | |
51 | tls_max_version = _HTTP_TLS_MAX; | |
63aefcd5 MS |
52 | |
53 | ||
2ece34a9 MS |
54 | /* |
55 | * Local functions... | |
56 | */ | |
cc754834 | 57 | |
2ece34a9 MS |
58 | static _http_sspi_t *http_sspi_alloc(void); |
59 | static int http_sspi_client(http_t *http, const char *hostname); | |
17eecbf1 | 60 | static PCCERT_CONTEXT http_sspi_create_credential(http_credential_t *cred); |
e32497ad MS |
61 | static BOOL http_sspi_find_credentials(http_t *http, const LPWSTR containerName, const char *common_name); |
62 | static void http_sspi_free(_http_sspi_t *sspi); | |
63 | static BOOL http_sspi_make_credentials(_http_sspi_t *sspi, const LPWSTR containerName, const char *common_name, _http_mode_t mode, int years); | |
2ece34a9 | 64 | static int http_sspi_server(http_t *http, const char *hostname); |
e32497ad MS |
65 | static void http_sspi_set_allows_any_root(_http_sspi_t *sspi, BOOL allow); |
66 | static void http_sspi_set_allows_expired_certs(_http_sspi_t *sspi, BOOL allow); | |
52770f63 | 67 | static const char *http_sspi_strerror(char *buffer, size_t bufsize, DWORD code); |
2ece34a9 | 68 | static DWORD http_sspi_verify(PCCERT_CONTEXT cert, const char *common_name, DWORD dwCertFlags); |
cc754834 MS |
69 | |
70 | ||
2c85b752 | 71 | /* |
2ece34a9 MS |
72 | * 'cupsMakeServerCredentials()' - Make a self-signed certificate and private key pair. |
73 | * | |
e1f19878 | 74 | * @since CUPS 2.0/OS 10.10@ |
2c85b752 MS |
75 | */ |
76 | ||
2ece34a9 MS |
77 | int /* O - 1 on success, 0 on failure */ |
78 | cupsMakeServerCredentials( | |
79 | const char *path, /* I - Keychain path or @code NULL@ for default */ | |
80 | const char *common_name, /* I - Common name */ | |
81 | int num_alt_names, /* I - Number of subject alternate names */ | |
82 | const char **alt_names, /* I - Subject Alternate Names */ | |
83 | time_t expiration_date) /* I - Expiration date */ | |
2c85b752 | 84 | { |
e32497ad MS |
85 | _http_sspi_t *sspi; /* SSPI data */ |
86 | int ret; /* Return value */ | |
87 | ||
88 | ||
2ece34a9 | 89 | DEBUG_printf(("cupsMakeServerCredentials(path=\"%s\", common_name=\"%s\", num_alt_names=%d, alt_names=%p, expiration_date=%d)", path, common_name, num_alt_names, alt_names, (int)expiration_date)); |
2c85b752 | 90 | |
2ece34a9 | 91 | (void)path; |
2ece34a9 MS |
92 | (void)num_alt_names; |
93 | (void)alt_names; | |
2c85b752 | 94 | |
e32497ad MS |
95 | sspi = http_sspi_alloc(); |
96 | ret = http_sspi_make_credentials(sspi, L"ServerContainer", common_name, _HTTP_MODE_SERVER, (int)((expiration_date - time(NULL) + 86399) / 86400 / 365)); | |
97 | ||
98 | http_sspi_free(sspi); | |
99 | ||
100 | return (ret); | |
2ece34a9 | 101 | } |
2c85b752 | 102 | |
2c85b752 | 103 | |
2ece34a9 MS |
104 | /* |
105 | * 'cupsSetServerCredentials()' - Set the default server credentials. | |
106 | * | |
107 | * Note: The server credentials are used by all threads in the running process. | |
108 | * This function is threadsafe. | |
109 | * | |
e1f19878 | 110 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 111 | */ |
2c85b752 | 112 | |
2ece34a9 MS |
113 | int /* O - 1 on success, 0 on failure */ |
114 | cupsSetServerCredentials( | |
115 | const char *path, /* I - Keychain path or @code NULL@ for default */ | |
116 | const char *common_name, /* I - Default common name for server */ | |
117 | int auto_create) /* I - 1 = automatically create self-signed certificates */ | |
118 | { | |
119 | DEBUG_printf(("cupsSetServerCredentials(path=\"%s\", common_name=\"%s\", auto_create=%d)", path, common_name, auto_create)); | |
2c85b752 | 120 | |
2ece34a9 MS |
121 | (void)path; |
122 | (void)common_name; | |
123 | (void)auto_create; | |
2c85b752 | 124 | |
2ece34a9 | 125 | return (0); |
2c85b752 MS |
126 | } |
127 | ||
128 | ||
2c85b752 | 129 | /* |
2ece34a9 MS |
130 | * 'httpCopyCredentials()' - Copy the credentials associated with the peer in |
131 | * an encrypted connection. | |
132 | * | |
8072030b | 133 | * @since CUPS 1.5/macOS 10.7@ |
2c85b752 MS |
134 | */ |
135 | ||
2ece34a9 MS |
136 | int /* O - Status of call (0 = success) */ |
137 | httpCopyCredentials( | |
138 | http_t *http, /* I - Connection to server */ | |
139 | cups_array_t **credentials) /* O - Array of credentials */ | |
2c85b752 | 140 | { |
2ece34a9 | 141 | DEBUG_printf(("httpCopyCredentials(http=%p, credentials=%p)", http, credentials)); |
2c85b752 | 142 | |
9041146f MS |
143 | if (!http || !http->tls || !http->tls->remoteCert || !credentials) |
144 | { | |
145 | if (credentials) | |
146 | *credentials = NULL; | |
147 | ||
148 | return (-1); | |
149 | } | |
2c85b752 | 150 | |
9041146f MS |
151 | *credentials = cupsArrayNew(NULL, NULL); |
152 | httpAddCredential(*credentials, http->tls->remoteCert->pbCertEncoded, http->tls->remoteCert->cbCertEncoded); | |
2c85b752 | 153 | |
9041146f | 154 | return (0); |
2ece34a9 | 155 | } |
2c85b752 | 156 | |
2c85b752 | 157 | |
2ece34a9 MS |
158 | /* |
159 | * '_httpCreateCredentials()' - Create credentials in the internal format. | |
160 | */ | |
2c85b752 | 161 | |
2ece34a9 MS |
162 | http_tls_credentials_t /* O - Internal credentials */ |
163 | _httpCreateCredentials( | |
164 | cups_array_t *credentials) /* I - Array of credentials */ | |
165 | { | |
17eecbf1 | 166 | return (http_sspi_create_credential((http_credential_t *)cupsArrayFirst(credentials))); |
2ece34a9 | 167 | } |
2c85b752 | 168 | |
2c85b752 | 169 | |
2ece34a9 MS |
170 | /* |
171 | * 'httpCredentialsAreValidForName()' - Return whether the credentials are valid for the given name. | |
172 | * | |
e1f19878 | 173 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 174 | */ |
2c85b752 | 175 | |
2ece34a9 MS |
176 | int /* O - 1 if valid, 0 otherwise */ |
177 | httpCredentialsAreValidForName( | |
178 | cups_array_t *credentials, /* I - Credentials */ | |
179 | const char *common_name) /* I - Name to check */ | |
180 | { | |
17eecbf1 MS |
181 | int valid = 1; /* Valid name? */ |
182 | PCCERT_CONTEXT cert = http_sspi_create_credential((http_credential_t *)cupsArrayFirst(credentials)); | |
183 | /* Certificate */ | |
184 | char cert_name[1024]; /* Name from certificate */ | |
185 | ||
186 | ||
187 | if (cert) | |
188 | { | |
9041146f MS |
189 | if (CertNameToStr(X509_ASN_ENCODING, &(cert->pCertInfo->Subject), CERT_SIMPLE_NAME_STR, cert_name, sizeof(cert_name))) |
190 | { | |
191 | /* | |
192 | * Extract common name at end... | |
193 | */ | |
194 | ||
195 | char *ptr = strrchr(cert_name, ','); | |
196 | if (ptr && ptr[1]) | |
197 | _cups_strcpy(cert_name, ptr + 2); | |
198 | } | |
199 | else | |
17eecbf1 MS |
200 | strlcpy(cert_name, "unknown", sizeof(cert_name)); |
201 | ||
202 | CertFreeCertificateContext(cert); | |
203 | } | |
204 | else | |
205 | strlcpy(cert_name, "unknown", sizeof(cert_name)); | |
206 | ||
207 | /* | |
208 | * Compare the common names... | |
209 | */ | |
210 | ||
211 | if (_cups_strcasecmp(common_name, cert_name)) | |
212 | { | |
213 | /* | |
214 | * Not an exact match for the common name, check for wildcard certs... | |
215 | */ | |
216 | ||
217 | const char *domain = strchr(common_name, '.'); | |
218 | /* Domain in common name */ | |
219 | ||
220 | if (strncmp(cert_name, "*.", 2) || !domain || _cups_strcasecmp(domain, cert_name + 1)) | |
221 | { | |
222 | /* | |
223 | * Not a wildcard match. | |
224 | */ | |
225 | ||
226 | /* TODO: Check subject alternate names */ | |
227 | valid = 0; | |
228 | } | |
229 | } | |
2c85b752 | 230 | |
17eecbf1 | 231 | return (valid); |
2c85b752 | 232 | } |
2c85b752 MS |
233 | |
234 | ||
2c85b752 | 235 | /* |
2ece34a9 MS |
236 | * 'httpCredentialsGetTrust()' - Return the trust of credentials. |
237 | * | |
e1f19878 | 238 | * @since CUPS 2.0/OS 10.10@ |
2c85b752 MS |
239 | */ |
240 | ||
2ece34a9 MS |
241 | http_trust_t /* O - Level of trust */ |
242 | httpCredentialsGetTrust( | |
243 | cups_array_t *credentials, /* I - Credentials */ | |
244 | const char *common_name) /* I - Common name for trust lookup */ | |
2c85b752 | 245 | { |
17eecbf1 MS |
246 | http_trust_t trust = HTTP_TRUST_OK; /* Level of trust */ |
247 | PCCERT_CONTEXT cert = NULL; /* Certificate to validate */ | |
248 | DWORD certFlags = 0; /* Cert verification flags */ | |
249 | _cups_globals_t *cg = _cupsGlobals(); /* Per-thread global data */ | |
2c85b752 MS |
250 | |
251 | ||
2ece34a9 MS |
252 | if (!common_name) |
253 | return (HTTP_TRUST_UNKNOWN); | |
2c85b752 | 254 | |
17eecbf1 MS |
255 | cert = http_sspi_create_credential((http_credential_t *)cupsArrayFirst(credentials)); |
256 | if (!cert) | |
257 | return (HTTP_TRUST_UNKNOWN); | |
2c85b752 | 258 | |
3abb875b MS |
259 | if (cg->any_root < 0) |
260 | _cupsSetDefaults(); | |
261 | ||
17eecbf1 MS |
262 | if (cg->any_root) |
263 | certFlags |= SECURITY_FLAG_IGNORE_UNKNOWN_CA; | |
2c85b752 | 264 | |
17eecbf1 MS |
265 | if (cg->expired_certs) |
266 | certFlags |= SECURITY_FLAG_IGNORE_CERT_DATE_INVALID; | |
2c85b752 | 267 | |
17eecbf1 MS |
268 | if (!cg->validate_certs) |
269 | certFlags |= SECURITY_FLAG_IGNORE_CERT_CN_INVALID; | |
2c85b752 | 270 | |
17eecbf1 | 271 | if (http_sspi_verify(cert, common_name, certFlags) != SEC_E_OK) |
2ece34a9 | 272 | trust = HTTP_TRUST_INVALID; |
2c85b752 | 273 | |
17eecbf1 | 274 | CertFreeCertificateContext(cert); |
2c85b752 | 275 | |
2ece34a9 MS |
276 | return (trust); |
277 | } | |
2c85b752 | 278 | |
2c85b752 | 279 | |
2ece34a9 MS |
280 | /* |
281 | * 'httpCredentialsGetExpiration()' - Return the expiration date of the credentials. | |
282 | * | |
e1f19878 | 283 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 284 | */ |
2c85b752 | 285 | |
2ece34a9 MS |
286 | time_t /* O - Expiration date of credentials */ |
287 | httpCredentialsGetExpiration( | |
288 | cups_array_t *credentials) /* I - Credentials */ | |
289 | { | |
17eecbf1 MS |
290 | time_t expiration_date = 0; /* Expiration data of credentials */ |
291 | PCCERT_CONTEXT cert = http_sspi_create_credential((http_credential_t *)cupsArrayFirst(credentials)); | |
292 | /* Certificate */ | |
2c85b752 | 293 | |
17eecbf1 MS |
294 | if (cert) |
295 | { | |
296 | SYSTEMTIME systime; /* System time */ | |
297 | struct tm tm; /* UNIX date/time */ | |
298 | ||
9041146f | 299 | FileTimeToSystemTime(&(cert->pCertInfo->NotAfter), &systime); |
17eecbf1 MS |
300 | |
301 | tm.tm_year = systime.wYear - 1900; | |
302 | tm.tm_mon = systime.wMonth - 1; | |
303 | tm.tm_mday = systime.wDay; | |
304 | tm.tm_hour = systime.wHour; | |
305 | tm.tm_min = systime.wMinute; | |
306 | tm.tm_sec = systime.wSecond; | |
307 | ||
308 | expiration_date = mktime(&tm); | |
309 | ||
310 | CertFreeCertificateContext(cert); | |
311 | } | |
312 | ||
313 | return (expiration_date); | |
2ece34a9 | 314 | } |
2c85b752 | 315 | |
2c85b752 | 316 | |
2ece34a9 MS |
317 | /* |
318 | * 'httpCredentialsString()' - Return a string representing the credentials. | |
319 | * | |
e1f19878 | 320 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 321 | */ |
2c85b752 | 322 | |
2ece34a9 MS |
323 | size_t /* O - Total size of credentials string */ |
324 | httpCredentialsString( | |
325 | cups_array_t *credentials, /* I - Credentials */ | |
326 | char *buffer, /* I - Buffer or @code NULL@ */ | |
327 | size_t bufsize) /* I - Size of buffer */ | |
328 | { | |
17eecbf1 MS |
329 | http_credential_t *first = (http_credential_t *)cupsArrayFirst(credentials); |
330 | /* First certificate */ | |
331 | PCCERT_CONTEXT cert; /* Certificate */ | |
332 | ||
333 | ||
2ece34a9 | 334 | DEBUG_printf(("httpCredentialsString(credentials=%p, buffer=%p, bufsize=" CUPS_LLFMT ")", credentials, buffer, CUPS_LLCAST bufsize)); |
2c85b752 | 335 | |
2ece34a9 MS |
336 | if (!buffer) |
337 | return (0); | |
2c85b752 | 338 | |
2ece34a9 MS |
339 | if (buffer && bufsize > 0) |
340 | *buffer = '\0'; | |
2c85b752 | 341 | |
17eecbf1 | 342 | cert = http_sspi_create_credential(first); |
2c85b752 | 343 | |
17eecbf1 | 344 | if (cert) |
2c85b752 | 345 | { |
17eecbf1 MS |
346 | char cert_name[256]; /* Common name */ |
347 | SYSTEMTIME systime; /* System time */ | |
348 | struct tm tm; /* UNIX date/time */ | |
2ece34a9 | 349 | time_t expiration; /* Expiration date of cert */ |
2ece34a9 | 350 | unsigned char md5_digest[16]; /* MD5 result */ |
2c85b752 | 351 | |
9041146f | 352 | FileTimeToSystemTime(&(cert->pCertInfo->NotAfter), &systime); |
17eecbf1 MS |
353 | |
354 | tm.tm_year = systime.wYear - 1900; | |
355 | tm.tm_mon = systime.wMonth - 1; | |
356 | tm.tm_mday = systime.wDay; | |
357 | tm.tm_hour = systime.wHour; | |
358 | tm.tm_min = systime.wMinute; | |
359 | tm.tm_sec = systime.wSecond; | |
360 | ||
361 | expiration = mktime(&tm); | |
2c85b752 | 362 | |
9041146f MS |
363 | if (CertNameToStr(X509_ASN_ENCODING, &(cert->pCertInfo->Subject), CERT_SIMPLE_NAME_STR, cert_name, sizeof(cert_name))) |
364 | { | |
365 | /* | |
366 | * Extract common name at end... | |
367 | */ | |
368 | ||
369 | char *ptr = strrchr(cert_name, ','); | |
370 | if (ptr && ptr[1]) | |
371 | _cups_strcpy(cert_name, ptr + 2); | |
372 | } | |
373 | else | |
17eecbf1 | 374 | strlcpy(cert_name, "unknown", sizeof(cert_name)); |
2c85b752 | 375 | |
7ec11630 | 376 | cupsHashData("md5", first->data, first->datalen, md5_digest, sizeof(md5_digest)); |
2c85b752 | 377 | |
17eecbf1 | 378 | snprintf(buffer, bufsize, "%s / %s / %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", cert_name, httpGetDateString(expiration), md5_digest[0], md5_digest[1], md5_digest[2], md5_digest[3], md5_digest[4], md5_digest[5], md5_digest[6], md5_digest[7], md5_digest[8], md5_digest[9], md5_digest[10], md5_digest[11], md5_digest[12], md5_digest[13], md5_digest[14], md5_digest[15]); |
2c85b752 | 379 | |
17eecbf1 | 380 | CertFreeCertificateContext(cert); |
2c85b752 MS |
381 | } |
382 | ||
2ece34a9 | 383 | DEBUG_printf(("1httpCredentialsString: Returning \"%s\".", buffer)); |
2c85b752 | 384 | |
2ece34a9 MS |
385 | return (strlen(buffer)); |
386 | } | |
2c85b752 | 387 | |
2c85b752 | 388 | |
2ece34a9 MS |
389 | /* |
390 | * '_httpFreeCredentials()' - Free internal credentials. | |
391 | */ | |
2c85b752 | 392 | |
2ece34a9 MS |
393 | void |
394 | _httpFreeCredentials( | |
395 | http_tls_credentials_t credentials) /* I - Internal credentials */ | |
396 | { | |
397 | if (!credentials) | |
398 | return; | |
17eecbf1 MS |
399 | |
400 | CertFreeCertificateContext(credentials); | |
2ece34a9 | 401 | } |
2c85b752 | 402 | |
2c85b752 | 403 | |
2ece34a9 MS |
404 | /* |
405 | * 'httpLoadCredentials()' - Load X.509 credentials from a keychain file. | |
406 | * | |
e1f19878 | 407 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 408 | */ |
2c85b752 | 409 | |
2ece34a9 MS |
410 | int /* O - 0 on success, -1 on error */ |
411 | httpLoadCredentials( | |
412 | const char *path, /* I - Keychain path or @code NULL@ for default */ | |
413 | cups_array_t **credentials, /* IO - Credentials */ | |
414 | const char *common_name) /* I - Common name for credentials */ | |
415 | { | |
52770f63 MS |
416 | HCERTSTORE store = NULL; /* Certificate store */ |
417 | PCCERT_CONTEXT storedContext = NULL; /* Context created from the store */ | |
418 | DWORD dwSize = 0; /* 32 bit size */ | |
419 | PBYTE p = NULL; /* Temporary storage */ | |
420 | HCRYPTPROV hProv = (HCRYPTPROV)NULL; | |
421 | /* Handle to a CSP */ | |
422 | CERT_NAME_BLOB sib; /* Arbitrary array of bytes */ | |
423 | #ifdef DEBUG | |
424 | char error[1024]; /* Error message buffer */ | |
425 | #endif /* DEBUG */ | |
426 | ||
427 | ||
2ece34a9 | 428 | DEBUG_printf(("httpLoadCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, credentials, common_name)); |
2c85b752 | 429 | |
2ece34a9 | 430 | (void)path; |
2c85b752 | 431 | |
2ece34a9 | 432 | if (credentials) |
52770f63 | 433 | { |
2ece34a9 | 434 | *credentials = NULL; |
52770f63 MS |
435 | } |
436 | else | |
437 | { | |
438 | DEBUG_puts("1httpLoadCredentials: NULL credentials pointer, returning -1."); | |
439 | return (-1); | |
440 | } | |
441 | ||
442 | if (!common_name) | |
443 | { | |
444 | DEBUG_puts("1httpLoadCredentials: Bad common name, returning -1."); | |
445 | return (-1); | |
446 | } | |
447 | ||
448 | if (!CryptAcquireContextW(&hProv, L"RememberedContainer", MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET)) | |
449 | { | |
450 | if (GetLastError() == NTE_EXISTS) | |
451 | { | |
452 | if (!CryptAcquireContextW(&hProv, L"RememberedContainer", MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET)) | |
453 | { | |
454 | DEBUG_printf(("1httpLoadCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
455 | goto cleanup; | |
456 | } | |
457 | } | |
458 | } | |
459 | ||
460 | store = CertOpenStore(CERT_STORE_PROV_SYSTEM, X509_ASN_ENCODING|PKCS_7_ASN_ENCODING, hProv, CERT_SYSTEM_STORE_LOCAL_MACHINE | CERT_STORE_NO_CRYPT_RELEASE_FLAG | CERT_STORE_OPEN_EXISTING_FLAG, L"MY"); | |
461 | ||
462 | if (!store) | |
463 | { | |
464 | DEBUG_printf(("1httpLoadCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
465 | goto cleanup; | |
466 | } | |
467 | ||
468 | dwSize = 0; | |
469 | ||
470 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, NULL, &dwSize, NULL)) | |
471 | { | |
472 | DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
473 | goto cleanup; | |
474 | } | |
475 | ||
476 | p = (PBYTE)malloc(dwSize); | |
477 | ||
478 | if (!p) | |
479 | { | |
480 | DEBUG_printf(("1httpLoadCredentials: malloc failed for %d bytes.", dwSize)); | |
481 | goto cleanup; | |
482 | } | |
483 | ||
484 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, p, &dwSize, NULL)) | |
485 | { | |
486 | DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
487 | goto cleanup; | |
488 | } | |
489 | ||
490 | sib.cbData = dwSize; | |
491 | sib.pbData = p; | |
492 | ||
493 | storedContext = CertFindCertificateInStore(store, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_SUBJECT_NAME, &sib, NULL); | |
494 | ||
495 | if (!storedContext) | |
496 | { | |
497 | DEBUG_printf(("1httpLoadCredentials: Unable to find credentials for \"%s\".", common_name)); | |
498 | goto cleanup; | |
499 | } | |
500 | ||
501 | *credentials = cupsArrayNew(NULL, NULL); | |
502 | httpAddCredential(*credentials, storedContext->pbCertEncoded, storedContext->cbCertEncoded); | |
503 | ||
504 | cleanup: | |
505 | ||
506 | /* | |
507 | * Cleanup | |
508 | */ | |
509 | ||
510 | if (storedContext) | |
511 | CertFreeCertificateContext(storedContext); | |
512 | ||
513 | if (p) | |
514 | free(p); | |
515 | ||
516 | if (store) | |
517 | CertCloseStore(store, 0); | |
518 | ||
519 | if (hProv) | |
520 | CryptReleaseContext(hProv, 0); | |
2c85b752 | 521 | |
2ece34a9 | 522 | DEBUG_printf(("1httpLoadCredentials: Returning %d.", *credentials ? 0 : -1)); |
2c85b752 | 523 | |
2ece34a9 MS |
524 | return (*credentials ? 0 : -1); |
525 | } | |
2c85b752 | 526 | |
2c85b752 | 527 | |
2ece34a9 MS |
528 | /* |
529 | * 'httpSaveCredentials()' - Save X.509 credentials to a keychain file. | |
530 | * | |
e1f19878 | 531 | * @since CUPS 2.0/OS 10.10@ |
2ece34a9 | 532 | */ |
2c85b752 | 533 | |
2ece34a9 MS |
534 | int /* O - -1 on error, 0 on success */ |
535 | httpSaveCredentials( | |
536 | const char *path, /* I - Keychain path or @code NULL@ for default */ | |
537 | cups_array_t *credentials, /* I - Credentials */ | |
538 | const char *common_name) /* I - Common name for credentials */ | |
539 | { | |
52770f63 MS |
540 | HCERTSTORE store = NULL; /* Certificate store */ |
541 | PCCERT_CONTEXT storedContext = NULL; /* Context created from the store */ | |
542 | PCCERT_CONTEXT createdContext = NULL; /* Context created by us */ | |
543 | DWORD dwSize = 0; /* 32 bit size */ | |
544 | PBYTE p = NULL; /* Temporary storage */ | |
545 | HCRYPTPROV hProv = (HCRYPTPROV)NULL; | |
546 | /* Handle to a CSP */ | |
74ac5fe7 | 547 | CRYPT_KEY_PROV_INFO ckp; /* Handle to crypto key */ |
52770f63 MS |
548 | int ret = -1; /* Return value */ |
549 | #ifdef DEBUG | |
550 | char error[1024]; /* Error message buffer */ | |
551 | #endif /* DEBUG */ | |
552 | ||
553 | ||
2ece34a9 | 554 | DEBUG_printf(("httpSaveCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, credentials, common_name)); |
2c85b752 | 555 | |
2ece34a9 | 556 | (void)path; |
2c85b752 | 557 | |
52770f63 MS |
558 | if (!common_name) |
559 | { | |
560 | DEBUG_puts("1httpSaveCredentials: Bad common name, returning -1."); | |
561 | return (-1); | |
562 | } | |
563 | ||
74ac5fe7 | 564 | createdContext = http_sspi_create_credential((http_credential_t *)cupsArrayFirst(credentials)); |
52770f63 MS |
565 | if (!createdContext) |
566 | { | |
567 | DEBUG_puts("1httpSaveCredentials: Bad credentials, returning -1."); | |
568 | return (-1); | |
569 | } | |
570 | ||
571 | if (!CryptAcquireContextW(&hProv, L"RememberedContainer", MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET)) | |
572 | { | |
573 | if (GetLastError() == NTE_EXISTS) | |
574 | { | |
575 | if (!CryptAcquireContextW(&hProv, L"RememberedContainer", MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET)) | |
576 | { | |
577 | DEBUG_printf(("1httpSaveCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
578 | goto cleanup; | |
579 | } | |
580 | } | |
581 | } | |
582 | ||
583 | store = CertOpenStore(CERT_STORE_PROV_SYSTEM, X509_ASN_ENCODING|PKCS_7_ASN_ENCODING, hProv, CERT_SYSTEM_STORE_LOCAL_MACHINE | CERT_STORE_NO_CRYPT_RELEASE_FLAG | CERT_STORE_OPEN_EXISTING_FLAG, L"MY"); | |
584 | ||
585 | if (!store) | |
586 | { | |
587 | DEBUG_printf(("1httpSaveCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
588 | goto cleanup; | |
589 | } | |
590 | ||
591 | dwSize = 0; | |
592 | ||
593 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, NULL, &dwSize, NULL)) | |
594 | { | |
595 | DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
596 | goto cleanup; | |
597 | } | |
598 | ||
599 | p = (PBYTE)malloc(dwSize); | |
600 | ||
601 | if (!p) | |
602 | { | |
603 | DEBUG_printf(("1httpSaveCredentials: malloc failed for %d bytes.", dwSize)); | |
604 | goto cleanup; | |
605 | } | |
606 | ||
607 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, p, &dwSize, NULL)) | |
608 | { | |
609 | DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
610 | goto cleanup; | |
611 | } | |
612 | ||
613 | /* | |
614 | * Add the created context to the named store, and associate it with the named | |
615 | * container... | |
616 | */ | |
617 | ||
618 | if (!CertAddCertificateContextToStore(store, createdContext, CERT_STORE_ADD_REPLACE_EXISTING, &storedContext)) | |
619 | { | |
620 | DEBUG_printf(("1httpSaveCredentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
621 | goto cleanup; | |
622 | } | |
623 | ||
624 | ZeroMemory(&ckp, sizeof(ckp)); | |
625 | ckp.pwszContainerName = L"RememberedContainer"; | |
626 | ckp.pwszProvName = MS_DEF_PROV_W; | |
627 | ckp.dwProvType = PROV_RSA_FULL; | |
628 | ckp.dwFlags = CRYPT_MACHINE_KEYSET; | |
629 | ckp.dwKeySpec = AT_KEYEXCHANGE; | |
630 | ||
631 | if (!CertSetCertificateContextProperty(storedContext, CERT_KEY_PROV_INFO_PROP_ID, 0, &ckp)) | |
632 | { | |
633 | DEBUG_printf(("1httpSaveCredentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(error, sizeof(error), GetLastError()))); | |
634 | goto cleanup; | |
635 | } | |
636 | ||
637 | ret = 0; | |
638 | ||
639 | cleanup: | |
640 | ||
641 | /* | |
642 | * Cleanup | |
643 | */ | |
644 | ||
645 | if (createdContext) | |
646 | CertFreeCertificateContext(createdContext); | |
647 | ||
648 | if (storedContext) | |
649 | CertFreeCertificateContext(storedContext); | |
650 | ||
651 | if (p) | |
652 | free(p); | |
653 | ||
654 | if (store) | |
655 | CertCloseStore(store, 0); | |
656 | ||
657 | if (hProv) | |
658 | CryptReleaseContext(hProv, 0); | |
659 | ||
660 | DEBUG_printf(("1httpSaveCredentials: Returning %d.", ret)); | |
661 | return (ret); | |
2c85b752 MS |
662 | } |
663 | ||
664 | ||
665 | /* | |
2ece34a9 | 666 | * '_httpTLSInitialize()' - Initialize the TLS stack. |
2c85b752 MS |
667 | */ |
668 | ||
2ece34a9 MS |
669 | void |
670 | _httpTLSInitialize(void) | |
2c85b752 | 671 | { |
2ece34a9 MS |
672 | /* |
673 | * Nothing to do... | |
674 | */ | |
675 | } | |
2c85b752 | 676 | |
2c85b752 | 677 | |
2ece34a9 MS |
678 | /* |
679 | * '_httpTLSPending()' - Return the number of pending TLS-encrypted bytes. | |
680 | */ | |
2c85b752 | 681 | |
2ece34a9 MS |
682 | size_t /* O - Bytes available */ |
683 | _httpTLSPending(http_t *http) /* I - HTTP connection */ | |
684 | { | |
685 | if (http->tls) | |
686 | return (http->tls->readBufferUsed); | |
687 | else | |
688 | return (0); | |
689 | } | |
2c85b752 | 690 | |
2c85b752 | 691 | |
2ece34a9 MS |
692 | /* |
693 | * '_httpTLSRead()' - Read from a SSL/TLS connection. | |
694 | */ | |
2c85b752 | 695 | |
2ece34a9 MS |
696 | int /* O - Bytes read */ |
697 | _httpTLSRead(http_t *http, /* I - HTTP connection */ | |
698 | char *buf, /* I - Buffer to store data */ | |
699 | int len) /* I - Length of buffer */ | |
700 | { | |
701 | int i; /* Looping var */ | |
e32497ad | 702 | _http_sspi_t *sspi = http->tls; /* SSPI data */ |
2ece34a9 MS |
703 | SecBufferDesc message; /* Array of SecBuffer struct */ |
704 | SecBuffer buffers[4] = { 0 }; /* Security package buffer */ | |
705 | int num = 0; /* Return value */ | |
706 | PSecBuffer pDataBuffer; /* Data buffer */ | |
707 | PSecBuffer pExtraBuffer; /* Excess data buffer */ | |
708 | SECURITY_STATUS scRet; /* SSPI status */ | |
2c85b752 | 709 | |
2c85b752 | 710 | |
195c1f2d MS |
711 | DEBUG_printf(("4_httpTLSRead(http=%p, buf=%p, len=%d)", http, buf, len)); |
712 | ||
2ece34a9 MS |
713 | /* |
714 | * If there are bytes that have already been decrypted and have not yet been | |
715 | * read, return those... | |
716 | */ | |
2c85b752 | 717 | |
e32497ad | 718 | if (sspi->readBufferUsed > 0) |
2ece34a9 | 719 | { |
e32497ad | 720 | int bytesToCopy = min(sspi->readBufferUsed, len); |
2ece34a9 | 721 | /* Number of bytes to copy */ |
2c85b752 | 722 | |
e32497ad MS |
723 | memcpy(buf, sspi->readBuffer, bytesToCopy); |
724 | sspi->readBufferUsed -= bytesToCopy; | |
2c85b752 | 725 | |
e32497ad MS |
726 | if (sspi->readBufferUsed > 0) |
727 | memmove(sspi->readBuffer, sspi->readBuffer + bytesToCopy, sspi->readBufferUsed); | |
2c85b752 | 728 | |
195c1f2d MS |
729 | DEBUG_printf(("5_httpTLSRead: Returning %d bytes previously decrypted.", bytesToCopy)); |
730 | ||
2ece34a9 MS |
731 | return (bytesToCopy); |
732 | } | |
2c85b752 | 733 | |
2ece34a9 MS |
734 | /* |
735 | * Initialize security buffer structs | |
736 | */ | |
2c85b752 | 737 | |
2ece34a9 | 738 | message.ulVersion = SECBUFFER_VERSION; |
195c1f2d MS |
739 | message.cBuffers = 4; |
740 | message.pBuffers = buffers; | |
2c85b752 | 741 | |
2ece34a9 | 742 | do |
2c85b752 MS |
743 | { |
744 | /* | |
2ece34a9 | 745 | * If there is not enough space in the buffer, then increase its size... |
2c85b752 MS |
746 | */ |
747 | ||
e32497ad | 748 | if (sspi->decryptBufferLength <= sspi->decryptBufferUsed) |
2c85b752 | 749 | { |
2ece34a9 | 750 | BYTE *temp; /* New buffer */ |
2c85b752 | 751 | |
e32497ad | 752 | if (sspi->decryptBufferLength >= 262144) |
2ece34a9 MS |
753 | { |
754 | WSASetLastError(E_OUTOFMEMORY); | |
755 | DEBUG_puts("_httpTLSRead: Decryption buffer too large (>256k)"); | |
756 | return (-1); | |
757 | } | |
2c85b752 | 758 | |
e32497ad | 759 | if ((temp = realloc(sspi->decryptBuffer, sspi->decryptBufferLength + 4096)) == NULL) |
2ece34a9 | 760 | { |
e32497ad | 761 | DEBUG_printf(("_httpTLSRead: Unable to allocate %d byte decryption buffer.", sspi->decryptBufferLength + 4096)); |
2ece34a9 MS |
762 | WSASetLastError(E_OUTOFMEMORY); |
763 | return (-1); | |
764 | } | |
2c85b752 | 765 | |
e32497ad MS |
766 | sspi->decryptBufferLength += 4096; |
767 | sspi->decryptBuffer = temp; | |
195c1f2d | 768 | |
e32497ad | 769 | DEBUG_printf(("_httpTLSRead: Resized decryption buffer to %d bytes.", sspi->decryptBufferLength)); |
2ece34a9 | 770 | } |
2c85b752 | 771 | |
e32497ad MS |
772 | buffers[0].pvBuffer = sspi->decryptBuffer; |
773 | buffers[0].cbBuffer = (unsigned long)sspi->decryptBufferUsed; | |
2ece34a9 MS |
774 | buffers[0].BufferType = SECBUFFER_DATA; |
775 | buffers[1].BufferType = SECBUFFER_EMPTY; | |
776 | buffers[2].BufferType = SECBUFFER_EMPTY; | |
777 | buffers[3].BufferType = SECBUFFER_EMPTY; | |
2c85b752 | 778 | |
e32497ad | 779 | DEBUG_printf(("5_httpTLSRead: decryptBufferUsed=%d", sspi->decryptBufferUsed)); |
195c1f2d | 780 | |
e32497ad | 781 | scRet = DecryptMessage(&sspi->context, &message, 0, NULL); |
2c85b752 | 782 | |
2ece34a9 MS |
783 | if (scRet == SEC_E_INCOMPLETE_MESSAGE) |
784 | { | |
e32497ad | 785 | num = recv(http->fd, sspi->decryptBuffer + sspi->decryptBufferUsed, (int)(sspi->decryptBufferLength - sspi->decryptBufferUsed), 0); |
2ece34a9 MS |
786 | if (num < 0) |
787 | { | |
195c1f2d | 788 | DEBUG_printf(("5_httpTLSRead: recv failed: %d", WSAGetLastError())); |
2ece34a9 MS |
789 | return (-1); |
790 | } | |
791 | else if (num == 0) | |
792 | { | |
195c1f2d | 793 | DEBUG_puts("5_httpTLSRead: Server disconnected."); |
2ece34a9 MS |
794 | return (0); |
795 | } | |
2c85b752 | 796 | |
195c1f2d MS |
797 | DEBUG_printf(("5_httpTLSRead: Read %d bytes into decryption buffer.", num)); |
798 | ||
e32497ad | 799 | sspi->decryptBufferUsed += num; |
2ece34a9 | 800 | } |
2c85b752 | 801 | } |
2ece34a9 | 802 | while (scRet == SEC_E_INCOMPLETE_MESSAGE); |
2c85b752 | 803 | |
2ece34a9 MS |
804 | if (scRet == SEC_I_CONTEXT_EXPIRED) |
805 | { | |
195c1f2d | 806 | DEBUG_puts("5_httpTLSRead: Context expired."); |
2ece34a9 MS |
807 | WSASetLastError(WSAECONNRESET); |
808 | return (-1); | |
809 | } | |
810 | else if (scRet != SEC_E_OK) | |
811 | { | |
52770f63 | 812 | DEBUG_printf(("5_httpTLSRead: DecryptMessage failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 MS |
813 | WSASetLastError(WSASYSCALLFAILURE); |
814 | return (-1); | |
815 | } | |
2c85b752 | 816 | |
2ece34a9 MS |
817 | /* |
818 | * The decryption worked. Now, locate data buffer. | |
819 | */ | |
2c85b752 | 820 | |
2ece34a9 MS |
821 | pDataBuffer = NULL; |
822 | pExtraBuffer = NULL; | |
2c85b752 | 823 | |
2ece34a9 MS |
824 | for (i = 1; i < 4; i++) |
825 | { | |
826 | if (buffers[i].BufferType == SECBUFFER_DATA) | |
827 | pDataBuffer = &buffers[i]; | |
828 | else if (!pExtraBuffer && (buffers[i].BufferType == SECBUFFER_EXTRA)) | |
829 | pExtraBuffer = &buffers[i]; | |
830 | } | |
2c85b752 | 831 | |
2ece34a9 MS |
832 | /* |
833 | * If a data buffer is found, then copy the decrypted bytes to the passed-in | |
834 | * buffer... | |
835 | */ | |
2c85b752 | 836 | |
2ece34a9 MS |
837 | if (pDataBuffer) |
838 | { | |
33c9220c | 839 | int bytesToCopy = min((int)pDataBuffer->cbBuffer, len); |
2ece34a9 MS |
840 | /* Number of bytes to copy into buf */ |
841 | int bytesToSave = pDataBuffer->cbBuffer - bytesToCopy; | |
842 | /* Number of bytes to save in our read buffer */ | |
2c85b752 | 843 | |
2ece34a9 MS |
844 | if (bytesToCopy) |
845 | memcpy(buf, pDataBuffer->pvBuffer, bytesToCopy); | |
2c85b752 | 846 | |
2c85b752 | 847 | /* |
2ece34a9 MS |
848 | * If there are more decrypted bytes than can be copied to the passed in |
849 | * buffer, then save them... | |
2c85b752 MS |
850 | */ |
851 | ||
2ece34a9 | 852 | if (bytesToSave) |
2c85b752 | 853 | { |
e32497ad | 854 | if ((sspi->readBufferLength - sspi->readBufferUsed) < bytesToSave) |
2ece34a9 MS |
855 | { |
856 | BYTE *temp; /* New buffer pointer */ | |
2c85b752 | 857 | |
e32497ad | 858 | if ((temp = realloc(sspi->readBuffer, sspi->readBufferUsed + bytesToSave)) == NULL) |
2ece34a9 | 859 | { |
e32497ad | 860 | DEBUG_printf(("_httpTLSRead: Unable to allocate %d bytes.", sspi->readBufferUsed + bytesToSave)); |
2ece34a9 MS |
861 | WSASetLastError(E_OUTOFMEMORY); |
862 | return (-1); | |
863 | } | |
2c85b752 | 864 | |
e32497ad MS |
865 | sspi->readBufferLength = sspi->readBufferUsed + bytesToSave; |
866 | sspi->readBuffer = temp; | |
2ece34a9 | 867 | } |
2c85b752 | 868 | |
e32497ad | 869 | memcpy(((BYTE *)sspi->readBuffer) + sspi->readBufferUsed, ((BYTE *)pDataBuffer->pvBuffer) + bytesToCopy, bytesToSave); |
2c85b752 | 870 | |
e32497ad | 871 | sspi->readBufferUsed += bytesToSave; |
2ece34a9 | 872 | } |
2c85b752 | 873 | |
adad9dd6 | 874 | num = bytesToCopy; |
2ece34a9 MS |
875 | } |
876 | else | |
877 | { | |
33c9220c | 878 | DEBUG_puts("_httpTLSRead: Unable to find data buffer."); |
2ece34a9 MS |
879 | WSASetLastError(WSASYSCALLFAILURE); |
880 | return (-1); | |
881 | } | |
2c85b752 | 882 | |
2ece34a9 MS |
883 | /* |
884 | * If the decryption process left extra bytes, then save those back in | |
885 | * decryptBuffer. They will be processed the next time through the loop. | |
886 | */ | |
2c85b752 | 887 | |
2ece34a9 | 888 | if (pExtraBuffer) |
2c85b752 | 889 | { |
e32497ad MS |
890 | memmove(sspi->decryptBuffer, pExtraBuffer->pvBuffer, pExtraBuffer->cbBuffer); |
891 | sspi->decryptBufferUsed = pExtraBuffer->cbBuffer; | |
2ece34a9 MS |
892 | } |
893 | else | |
894 | { | |
e32497ad | 895 | sspi->decryptBufferUsed = 0; |
2c85b752 | 896 | } |
2c85b752 | 897 | |
adad9dd6 | 898 | return (num); |
2c85b752 | 899 | } |
2c85b752 MS |
900 | |
901 | ||
63aefcd5 MS |
902 | /* |
903 | * '_httpTLSSetOptions()' - Set TLS protocol and cipher suite options. | |
904 | */ | |
905 | ||
906 | void | |
454619c7 MS |
907 | _httpTLSSetOptions(int options, /* I - Options */ |
908 | int min_version, /* I - Minimum TLS version */ | |
909 | int max_version) /* I - Maximum TLS version */ | |
63aefcd5 | 910 | { |
02c88e67 | 911 | if (!(options & _HTTP_TLS_SET_DEFAULT) || tls_options < 0) |
8f1fbdec MS |
912 | { |
913 | tls_options = options; | |
914 | tls_min_version = min_version; | |
915 | tls_max_version = max_version; | |
916 | } | |
63aefcd5 MS |
917 | } |
918 | ||
919 | ||
cc754834 | 920 | /* |
2ece34a9 | 921 | * '_httpTLSStart()' - Set up SSL/TLS support on a connection. |
cc754834 | 922 | */ |
2ece34a9 MS |
923 | |
924 | int /* O - 0 on success, -1 on failure */ | |
925 | _httpTLSStart(http_t *http) /* I - HTTP connection */ | |
cc754834 | 926 | { |
2ece34a9 MS |
927 | char hostname[256], /* Hostname */ |
928 | *hostptr; /* Pointer into hostname */ | |
cc754834 | 929 | |
cc754834 | 930 | |
b37d45d9 MS |
931 | DEBUG_printf(("3_httpTLSStart(http=%p)", http)); |
932 | ||
933 | if (tls_options < 0) | |
934 | { | |
935 | DEBUG_puts("4_httpTLSStart: Setting defaults."); | |
936 | _cupsSetDefaults(); | |
937 | DEBUG_printf(("4_httpTLSStart: tls_options=%x", tls_options)); | |
938 | } | |
2ece34a9 MS |
939 | |
940 | if ((http->tls = http_sspi_alloc()) == NULL) | |
941 | return (-1); | |
cc754834 | 942 | |
2ece34a9 MS |
943 | if (http->mode == _HTTP_MODE_CLIENT) |
944 | { | |
945 | /* | |
946 | * Client: determine hostname... | |
947 | */ | |
cc754834 | 948 | |
2ece34a9 MS |
949 | if (httpAddrLocalhost(http->hostaddr)) |
950 | { | |
951 | strlcpy(hostname, "localhost", sizeof(hostname)); | |
952 | } | |
953 | else | |
954 | { | |
955 | /* | |
956 | * Otherwise make sure the hostname we have does not end in a trailing dot. | |
957 | */ | |
cc754834 | 958 | |
2ece34a9 MS |
959 | strlcpy(hostname, http->hostname, sizeof(hostname)); |
960 | if ((hostptr = hostname + strlen(hostname) - 1) >= hostname && | |
961 | *hostptr == '.') | |
962 | *hostptr = '\0'; | |
963 | } | |
cc754834 | 964 | |
2ece34a9 MS |
965 | return (http_sspi_client(http, hostname)); |
966 | } | |
967 | else | |
cc754834 | 968 | { |
2ece34a9 MS |
969 | /* |
970 | * Server: determine hostname to use... | |
971 | */ | |
972 | ||
378eeedf | 973 | if (http->fields[HTTP_FIELD_HOST]) |
cc754834 | 974 | { |
2ece34a9 MS |
975 | /* |
976 | * Use hostname for TLS upgrade... | |
977 | */ | |
978 | ||
979 | strlcpy(hostname, http->fields[HTTP_FIELD_HOST], sizeof(hostname)); | |
980 | } | |
981 | else | |
982 | { | |
983 | /* | |
984 | * Resolve hostname from connection address... | |
985 | */ | |
986 | ||
987 | http_addr_t addr; /* Connection address */ | |
988 | socklen_t addrlen; /* Length of address */ | |
989 | ||
990 | addrlen = sizeof(addr); | |
991 | if (getsockname(http->fd, (struct sockaddr *)&addr, &addrlen)) | |
cc754834 | 992 | { |
2ece34a9 MS |
993 | DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno))); |
994 | hostname[0] = '\0'; | |
995 | } | |
996 | else if (httpAddrLocalhost(&addr)) | |
997 | hostname[0] = '\0'; | |
998 | else | |
999 | { | |
1000 | httpAddrLookup(&addr, hostname, sizeof(hostname)); | |
1001 | DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname)); | |
cc754834 MS |
1002 | } |
1003 | } | |
cc754834 | 1004 | |
2ece34a9 | 1005 | return (http_sspi_server(http, hostname)); |
cc754834 | 1006 | } |
2ece34a9 | 1007 | } |
cc754834 | 1008 | |
321d8d57 | 1009 | |
2ece34a9 MS |
1010 | /* |
1011 | * '_httpTLSStop()' - Shut down SSL/TLS on a connection. | |
1012 | */ | |
cc754834 | 1013 | |
2ece34a9 MS |
1014 | void |
1015 | _httpTLSStop(http_t *http) /* I - HTTP connection */ | |
1016 | { | |
e32497ad | 1017 | _http_sspi_t *sspi = http->tls; /* SSPI data */ |
cc754834 | 1018 | |
cc754834 | 1019 | |
e32497ad | 1020 | if (sspi->contextInitialized && http->fd >= 0) |
cc754834 | 1021 | { |
2ece34a9 MS |
1022 | SecBufferDesc message; /* Array of SecBuffer struct */ |
1023 | SecBuffer buffers[1] = { 0 }; | |
1024 | /* Security package buffer */ | |
1025 | DWORD dwType; /* Type */ | |
1026 | DWORD status; /* Status */ | |
cc754834 | 1027 | |
2ece34a9 MS |
1028 | /* |
1029 | * Notify schannel that we are about to close the connection. | |
1030 | */ | |
cc754834 | 1031 | |
2ece34a9 | 1032 | dwType = SCHANNEL_SHUTDOWN; |
321d8d57 | 1033 | |
2ece34a9 MS |
1034 | buffers[0].pvBuffer = &dwType; |
1035 | buffers[0].BufferType = SECBUFFER_TOKEN; | |
1036 | buffers[0].cbBuffer = sizeof(dwType); | |
cc754834 | 1037 | |
2ece34a9 MS |
1038 | message.cBuffers = 1; |
1039 | message.pBuffers = buffers; | |
1040 | message.ulVersion = SECBUFFER_VERSION; | |
cc754834 | 1041 | |
e32497ad | 1042 | status = ApplyControlToken(&sspi->context, &message); |
cc754834 | 1043 | |
2ece34a9 MS |
1044 | if (SUCCEEDED(status)) |
1045 | { | |
1046 | PBYTE pbMessage; /* Message buffer */ | |
1047 | DWORD cbMessage; /* Message buffer count */ | |
1048 | DWORD cbData; /* Data count */ | |
1049 | DWORD dwSSPIFlags; /* SSL attributes we requested */ | |
1050 | DWORD dwSSPIOutFlags; /* SSL attributes we received */ | |
1051 | TimeStamp tsExpiry; /* Time stamp */ | |
cc754834 | 1052 | |
2ece34a9 MS |
1053 | dwSSPIFlags = ASC_REQ_SEQUENCE_DETECT | |
1054 | ASC_REQ_REPLAY_DETECT | | |
1055 | ASC_REQ_CONFIDENTIALITY | | |
1056 | ASC_REQ_EXTENDED_ERROR | | |
1057 | ASC_REQ_ALLOCATE_MEMORY | | |
1058 | ASC_REQ_STREAM; | |
321d8d57 | 1059 | |
2ece34a9 MS |
1060 | buffers[0].pvBuffer = NULL; |
1061 | buffers[0].BufferType = SECBUFFER_TOKEN; | |
1062 | buffers[0].cbBuffer = 0; | |
cc754834 | 1063 | |
2ece34a9 MS |
1064 | message.cBuffers = 1; |
1065 | message.pBuffers = buffers; | |
1066 | message.ulVersion = SECBUFFER_VERSION; | |
1067 | ||
e32497ad | 1068 | status = AcceptSecurityContext(&sspi->creds, &sspi->context, NULL, |
2ece34a9 MS |
1069 | dwSSPIFlags, SECURITY_NATIVE_DREP, NULL, |
1070 | &message, &dwSSPIOutFlags, &tsExpiry); | |
1071 | ||
1072 | if (SUCCEEDED(status)) | |
1073 | { | |
1074 | pbMessage = buffers[0].pvBuffer; | |
1075 | cbMessage = buffers[0].cbBuffer; | |
1076 | ||
1077 | /* | |
1078 | * Send the close notify message to the client. | |
1079 | */ | |
1080 | ||
1081 | if (pbMessage && cbMessage) | |
1082 | { | |
1083 | cbData = send(http->fd, pbMessage, cbMessage, 0); | |
1084 | if ((cbData == SOCKET_ERROR) || (cbData == 0)) | |
1085 | { | |
1086 | status = WSAGetLastError(); | |
1087 | DEBUG_printf(("_httpTLSStop: sending close notify failed: %d", status)); | |
1088 | } | |
1089 | else | |
1090 | { | |
1091 | FreeContextBuffer(pbMessage); | |
1092 | } | |
1093 | } | |
1094 | } | |
1095 | else | |
1096 | { | |
52770f63 | 1097 | DEBUG_printf(("_httpTLSStop: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), status))); |
2ece34a9 MS |
1098 | } |
1099 | } | |
1100 | else | |
1101 | { | |
52770f63 | 1102 | DEBUG_printf(("_httpTLSStop: ApplyControlToken failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), status))); |
cc754834 | 1103 | } |
2ece34a9 | 1104 | } |
cc754834 | 1105 | |
e32497ad | 1106 | http_sspi_free(sspi); |
cc754834 | 1107 | |
2ece34a9 MS |
1108 | http->tls = NULL; |
1109 | } | |
1110 | ||
1111 | ||
1112 | /* | |
1113 | * '_httpTLSWrite()' - Write to a SSL/TLS connection. | |
1114 | */ | |
1115 | ||
1116 | int /* O - Bytes written */ | |
1117 | _httpTLSWrite(http_t *http, /* I - HTTP connection */ | |
1118 | const char *buf, /* I - Buffer holding data */ | |
1119 | int len) /* I - Length of buffer */ | |
1120 | { | |
e32497ad | 1121 | _http_sspi_t *sspi = http->tls; /* SSPI data */ |
2ece34a9 MS |
1122 | SecBufferDesc message; /* Array of SecBuffer struct */ |
1123 | SecBuffer buffers[4] = { 0 }; /* Security package buffer */ | |
1124 | int bufferLen; /* Buffer length */ | |
1125 | int bytesLeft; /* Bytes left to write */ | |
1126 | const char *bufptr; /* Pointer into buffer */ | |
1127 | int num = 0; /* Return value */ | |
1128 | ||
1129 | ||
e32497ad | 1130 | bufferLen = sspi->streamSizes.cbMaximumMessage + sspi->streamSizes.cbHeader + sspi->streamSizes.cbTrailer; |
2ece34a9 | 1131 | |
e32497ad | 1132 | if (bufferLen > sspi->writeBufferLength) |
2ece34a9 MS |
1133 | { |
1134 | BYTE *temp; /* New buffer pointer */ | |
1135 | ||
e32497ad | 1136 | if ((temp = (BYTE *)realloc(sspi->writeBuffer, bufferLen)) == NULL) |
cc754834 | 1137 | { |
2ece34a9 MS |
1138 | DEBUG_printf(("_httpTLSWrite: Unable to allocate buffer of %d bytes.", bufferLen)); |
1139 | WSASetLastError(E_OUTOFMEMORY); | |
1140 | return (-1); | |
cc754834 | 1141 | } |
2ece34a9 | 1142 | |
e32497ad MS |
1143 | sspi->writeBuffer = temp; |
1144 | sspi->writeBufferLength = bufferLen; | |
cc754834 MS |
1145 | } |
1146 | ||
2ece34a9 MS |
1147 | bytesLeft = len; |
1148 | bufptr = buf; | |
cc754834 | 1149 | |
2ece34a9 MS |
1150 | while (bytesLeft) |
1151 | { | |
e32497ad | 1152 | int chunk = min((int)sspi->streamSizes.cbMaximumMessage, bytesLeft); |
2ece34a9 MS |
1153 | /* Size of data to write */ |
1154 | SECURITY_STATUS scRet; /* SSPI status */ | |
1155 | ||
1156 | /* | |
1157 | * Copy user data into the buffer, starting just past the header... | |
1158 | */ | |
1159 | ||
e32497ad | 1160 | memcpy(sspi->writeBuffer + sspi->streamSizes.cbHeader, bufptr, chunk); |
2ece34a9 MS |
1161 | |
1162 | /* | |
1163 | * Setup the SSPI buffers | |
1164 | */ | |
1165 | ||
1166 | message.ulVersion = SECBUFFER_VERSION; | |
1167 | message.cBuffers = 4; | |
1168 | message.pBuffers = buffers; | |
1169 | ||
e32497ad MS |
1170 | buffers[0].pvBuffer = sspi->writeBuffer; |
1171 | buffers[0].cbBuffer = sspi->streamSizes.cbHeader; | |
2ece34a9 | 1172 | buffers[0].BufferType = SECBUFFER_STREAM_HEADER; |
e32497ad | 1173 | buffers[1].pvBuffer = sspi->writeBuffer + sspi->streamSizes.cbHeader; |
2ece34a9 MS |
1174 | buffers[1].cbBuffer = (unsigned long) chunk; |
1175 | buffers[1].BufferType = SECBUFFER_DATA; | |
e32497ad MS |
1176 | buffers[2].pvBuffer = sspi->writeBuffer + sspi->streamSizes.cbHeader + chunk; |
1177 | buffers[2].cbBuffer = sspi->streamSizes.cbTrailer; | |
2ece34a9 MS |
1178 | buffers[2].BufferType = SECBUFFER_STREAM_TRAILER; |
1179 | buffers[3].BufferType = SECBUFFER_EMPTY; | |
1180 | ||
1181 | /* | |
1182 | * Encrypt the data | |
1183 | */ | |
1184 | ||
e32497ad | 1185 | scRet = EncryptMessage(&sspi->context, 0, &message, 0); |
2ece34a9 MS |
1186 | |
1187 | if (FAILED(scRet)) | |
1188 | { | |
52770f63 | 1189 | DEBUG_printf(("_httpTLSWrite: EncryptMessage failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 MS |
1190 | WSASetLastError(WSASYSCALLFAILURE); |
1191 | return (-1); | |
1192 | } | |
1193 | ||
1194 | /* | |
1195 | * Send the data. Remember the size of the total data to send is the size | |
1196 | * of the header, the size of the data the caller passed in and the size | |
1197 | * of the trailer... | |
1198 | */ | |
1199 | ||
e32497ad | 1200 | num = send(http->fd, sspi->writeBuffer, buffers[0].cbBuffer + buffers[1].cbBuffer + buffers[2].cbBuffer, 0); |
2ece34a9 MS |
1201 | |
1202 | if (num <= 0) | |
1203 | { | |
1204 | DEBUG_printf(("_httpTLSWrite: send failed: %ld", WSAGetLastError())); | |
1205 | return (num); | |
1206 | } | |
1207 | ||
1208 | bytesLeft -= chunk; | |
1209 | bufptr += chunk; | |
1210 | } | |
1211 | ||
1212 | return (len); | |
1213 | } | |
1214 | ||
1215 | ||
33c9220c | 1216 | #if 0 |
2ece34a9 MS |
1217 | /* |
1218 | * 'http_setup_ssl()' - Set up SSL/TLS support on a connection. | |
1219 | */ | |
1220 | ||
1221 | static int /* O - 0 on success, -1 on failure */ | |
1222 | http_setup_ssl(http_t *http) /* I - Connection to server */ | |
1223 | { | |
1224 | char hostname[256], /* Hostname */ | |
1225 | *hostptr; /* Pointer into hostname */ | |
1226 | ||
1227 | TCHAR username[256]; /* Username returned from GetUserName() */ | |
1228 | TCHAR commonName[256];/* Common name for certificate */ | |
1229 | DWORD dwSize; /* 32 bit size */ | |
cc754834 | 1230 | |
2ece34a9 MS |
1231 | |
1232 | DEBUG_printf(("7http_setup_ssl(http=%p)", http)); | |
cc754834 MS |
1233 | |
1234 | /* | |
2ece34a9 | 1235 | * Get the hostname to use for SSL... |
cc754834 | 1236 | */ |
2ece34a9 MS |
1237 | |
1238 | if (httpAddrLocalhost(http->hostaddr)) | |
cc754834 | 1239 | { |
2ece34a9 | 1240 | strlcpy(hostname, "localhost", sizeof(hostname)); |
cc754834 | 1241 | } |
2ece34a9 MS |
1242 | else |
1243 | { | |
1244 | /* | |
1245 | * Otherwise make sure the hostname we have does not end in a trailing dot. | |
1246 | */ | |
cc754834 | 1247 | |
2ece34a9 MS |
1248 | strlcpy(hostname, http->hostname, sizeof(hostname)); |
1249 | if ((hostptr = hostname + strlen(hostname) - 1) >= hostname && | |
1250 | *hostptr == '.') | |
1251 | *hostptr = '\0'; | |
1252 | } | |
cc754834 | 1253 | |
33c9220c | 1254 | http->tls = http_sspi_alloc(); |
cc754834 | 1255 | |
2ece34a9 MS |
1256 | if (!http->tls) |
1257 | { | |
1258 | _cupsSetHTTPError(HTTP_STATUS_ERROR); | |
1259 | return (-1); | |
1260 | } | |
cc754834 | 1261 | |
2ece34a9 MS |
1262 | dwSize = sizeof(username) / sizeof(TCHAR); |
1263 | GetUserName(username, &dwSize); | |
1264 | _sntprintf_s(commonName, sizeof(commonName) / sizeof(TCHAR), | |
1265 | sizeof(commonName) / sizeof(TCHAR), TEXT("CN=%s"), username); | |
cc754834 | 1266 | |
2ece34a9 MS |
1267 | if (!_sspiGetCredentials(http->tls, L"ClientContainer", |
1268 | commonName, FALSE)) | |
1269 | { | |
1270 | _sspiFree(http->tls); | |
1271 | http->tls = NULL; | |
cc754834 | 1272 | |
2ece34a9 MS |
1273 | http->error = EIO; |
1274 | http->status = HTTP_STATUS_ERROR; | |
cc754834 | 1275 | |
2ece34a9 MS |
1276 | _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, |
1277 | _("Unable to establish a secure connection to host."), 1); | |
cc754834 | 1278 | |
2ece34a9 MS |
1279 | return (-1); |
1280 | } | |
1281 | ||
1282 | _sspiSetAllowsAnyRoot(http->tls, TRUE); | |
1283 | _sspiSetAllowsExpiredCerts(http->tls, TRUE); | |
1284 | ||
1285 | if (!_sspiConnect(http->tls, hostname)) | |
1286 | { | |
1287 | _sspiFree(http->tls); | |
1288 | http->tls = NULL; | |
1289 | ||
1290 | http->error = EIO; | |
1291 | http->status = HTTP_STATUS_ERROR; | |
1292 | ||
1293 | _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, | |
1294 | _("Unable to establish a secure connection to host."), 1); | |
1295 | ||
1296 | return (-1); | |
1297 | } | |
1298 | ||
1299 | return (0); | |
cc754834 | 1300 | } |
33c9220c | 1301 | #endif // 0 |
cc754834 MS |
1302 | |
1303 | ||
1304 | /* | |
2ece34a9 | 1305 | * 'http_sspi_alloc()' - Allocate SSPI object. |
cc754834 | 1306 | */ |
2ece34a9 MS |
1307 | |
1308 | static _http_sspi_t * /* O - New SSPI/SSL object */ | |
1309 | http_sspi_alloc(void) | |
1310 | { | |
e32497ad | 1311 | return ((_http_sspi_t *)calloc(sizeof(_http_sspi_t), 1)); |
2ece34a9 MS |
1312 | } |
1313 | ||
1314 | ||
1315 | /* | |
1316 | * 'http_sspi_client()' - Negotiate a TLS connection as a client. | |
1317 | */ | |
1318 | ||
1319 | static int /* O - 0 on success, -1 on failure */ | |
1320 | http_sspi_client(http_t *http, /* I - Client connection */ | |
1321 | const char *hostname) /* I - Server hostname */ | |
cc754834 | 1322 | { |
e32497ad | 1323 | _http_sspi_t *sspi = http->tls; /* SSPI data */ |
9870d12b | 1324 | DWORD dwSize; /* Size for buffer */ |
33c9220c MS |
1325 | DWORD dwSSPIFlags; /* SSL connection attributes we want */ |
1326 | DWORD dwSSPIOutFlags; /* SSL connection attributes we got */ | |
1327 | TimeStamp tsExpiry; /* Time stamp */ | |
1328 | SECURITY_STATUS scRet; /* Status */ | |
1329 | int cbData; /* Data count */ | |
1330 | SecBufferDesc inBuffer; /* Array of SecBuffer structs */ | |
1331 | SecBuffer inBuffers[2]; /* Security package buffer */ | |
1332 | SecBufferDesc outBuffer; /* Array of SecBuffer structs */ | |
1333 | SecBuffer outBuffers[1]; /* Security package buffer */ | |
1334 | int ret = 0; /* Return value */ | |
9870d12b MS |
1335 | char username[1024], /* Current username */ |
1336 | common_name[1024]; /* CN=username */ | |
cc754834 | 1337 | |
cc754834 | 1338 | |
52770f63 | 1339 | DEBUG_printf(("4http_sspi_client(http=%p, hostname=\"%s\")", http, hostname)); |
2ece34a9 | 1340 | |
cc754834 MS |
1341 | dwSSPIFlags = ISC_REQ_SEQUENCE_DETECT | |
1342 | ISC_REQ_REPLAY_DETECT | | |
1343 | ISC_REQ_CONFIDENTIALITY | | |
1344 | ISC_RET_EXTENDED_ERROR | | |
1345 | ISC_REQ_ALLOCATE_MEMORY | | |
1346 | ISC_REQ_STREAM; | |
1347 | ||
9870d12b MS |
1348 | /* |
1349 | * Lookup the client certificate... | |
1350 | */ | |
1351 | ||
1352 | dwSize = sizeof(username); | |
1353 | GetUserName(username, &dwSize); | |
1354 | snprintf(common_name, sizeof(common_name), "CN=%s", username); | |
1355 | ||
e32497ad MS |
1356 | if (!http_sspi_find_credentials(http, L"ClientContainer", common_name)) |
1357 | if (!http_sspi_make_credentials(http->tls, L"ClientContainer", common_name, _HTTP_MODE_CLIENT, 10)) | |
1358 | { | |
52770f63 | 1359 | DEBUG_puts("5http_sspi_client: Unable to get client credentials."); |
e32497ad MS |
1360 | return (-1); |
1361 | } | |
9870d12b | 1362 | |
cc754834 MS |
1363 | /* |
1364 | * Initiate a ClientHello message and generate a token. | |
1365 | */ | |
2ece34a9 | 1366 | |
cc754834 MS |
1367 | outBuffers[0].pvBuffer = NULL; |
1368 | outBuffers[0].BufferType = SECBUFFER_TOKEN; | |
1369 | outBuffers[0].cbBuffer = 0; | |
1370 | ||
2ece34a9 MS |
1371 | outBuffer.cBuffers = 1; |
1372 | outBuffer.pBuffers = outBuffers; | |
cc754834 MS |
1373 | outBuffer.ulVersion = SECBUFFER_VERSION; |
1374 | ||
e32497ad | 1375 | scRet = InitializeSecurityContext(&sspi->creds, NULL, TEXT(""), dwSSPIFlags, 0, SECURITY_NATIVE_DREP, NULL, 0, &sspi->context, &outBuffer, &dwSSPIOutFlags, &tsExpiry); |
cc754834 MS |
1376 | |
1377 | if (scRet != SEC_I_CONTINUE_NEEDED) | |
1378 | { | |
52770f63 | 1379 | DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(1) failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 | 1380 | return (-1); |
cc754834 MS |
1381 | } |
1382 | ||
1383 | /* | |
1384 | * Send response to server if there is one. | |
1385 | */ | |
2ece34a9 | 1386 | |
cc754834 MS |
1387 | if (outBuffers[0].cbBuffer && outBuffers[0].pvBuffer) |
1388 | { | |
2ece34a9 | 1389 | if ((cbData = send(http->fd, outBuffers[0].pvBuffer, outBuffers[0].cbBuffer, 0)) <= 0) |
cc754834 | 1390 | { |
52770f63 | 1391 | DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError())); |
cc754834 | 1392 | FreeContextBuffer(outBuffers[0].pvBuffer); |
e32497ad | 1393 | DeleteSecurityContext(&sspi->context); |
2ece34a9 | 1394 | return (-1); |
cc754834 MS |
1395 | } |
1396 | ||
52770f63 | 1397 | DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData)); |
cc754834 | 1398 | |
cc754834 MS |
1399 | FreeContextBuffer(outBuffers[0].pvBuffer); |
1400 | outBuffers[0].pvBuffer = NULL; | |
1401 | } | |
1402 | ||
1403 | dwSSPIFlags = ISC_REQ_MANUAL_CRED_VALIDATION | | |
2ece34a9 | 1404 | ISC_REQ_SEQUENCE_DETECT | |
cc754834 MS |
1405 | ISC_REQ_REPLAY_DETECT | |
1406 | ISC_REQ_CONFIDENTIALITY | | |
1407 | ISC_RET_EXTENDED_ERROR | | |
1408 | ISC_REQ_ALLOCATE_MEMORY | | |
1409 | ISC_REQ_STREAM; | |
1410 | ||
e32497ad | 1411 | sspi->decryptBufferUsed = 0; |
cc754834 | 1412 | |
321d8d57 | 1413 | /* |
cc754834 MS |
1414 | * Loop until the handshake is finished or an error occurs. |
1415 | */ | |
2ece34a9 | 1416 | |
cc754834 MS |
1417 | scRet = SEC_I_CONTINUE_NEEDED; |
1418 | ||
1419 | while(scRet == SEC_I_CONTINUE_NEEDED || | |
1420 | scRet == SEC_E_INCOMPLETE_MESSAGE || | |
321d8d57 | 1421 | scRet == SEC_I_INCOMPLETE_CREDENTIALS) |
cc754834 | 1422 | { |
e32497ad | 1423 | if (sspi->decryptBufferUsed == 0 || scRet == SEC_E_INCOMPLETE_MESSAGE) |
cc754834 | 1424 | { |
e32497ad | 1425 | if (sspi->decryptBufferLength <= sspi->decryptBufferUsed) |
cc754834 | 1426 | { |
2ece34a9 | 1427 | BYTE *temp; /* New buffer */ |
cc754834 | 1428 | |
e32497ad | 1429 | if (sspi->decryptBufferLength >= 262144) |
2ece34a9 MS |
1430 | { |
1431 | WSASetLastError(E_OUTOFMEMORY); | |
52770f63 | 1432 | DEBUG_puts("5http_sspi_client: Decryption buffer too large (>256k)"); |
2ece34a9 MS |
1433 | return (-1); |
1434 | } | |
1435 | ||
e32497ad | 1436 | if ((temp = realloc(sspi->decryptBuffer, sspi->decryptBufferLength + 4096)) == NULL) |
2ece34a9 | 1437 | { |
52770f63 | 1438 | DEBUG_printf(("5http_sspi_client: Unable to allocate %d byte buffer.", sspi->decryptBufferLength + 4096)); |
2ece34a9 MS |
1439 | WSASetLastError(E_OUTOFMEMORY); |
1440 | return (-1); | |
1441 | } | |
1442 | ||
e32497ad MS |
1443 | sspi->decryptBufferLength += 4096; |
1444 | sspi->decryptBuffer = temp; | |
cc754834 | 1445 | } |
321d8d57 | 1446 | |
e32497ad | 1447 | cbData = recv(http->fd, sspi->decryptBuffer + sspi->decryptBufferUsed, (int)(sspi->decryptBufferLength - sspi->decryptBufferUsed), 0); |
321d8d57 | 1448 | |
2ece34a9 | 1449 | if (cbData < 0) |
cc754834 | 1450 | { |
52770f63 | 1451 | DEBUG_printf(("5http_sspi_client: recv failed: %d", WSAGetLastError())); |
2ece34a9 | 1452 | return (-1); |
cc754834 MS |
1453 | } |
1454 | else if (cbData == 0) | |
1455 | { | |
52770f63 | 1456 | DEBUG_printf(("5http_sspi_client: Server unexpectedly disconnected.")); |
2ece34a9 | 1457 | return (-1); |
cc754834 MS |
1458 | } |
1459 | ||
52770f63 | 1460 | DEBUG_printf(("5http_sspi_client: %d bytes of handshake data received", cbData)); |
cc754834 | 1461 | |
e32497ad | 1462 | sspi->decryptBufferUsed += cbData; |
cc754834 MS |
1463 | } |
1464 | ||
1465 | /* | |
2ece34a9 MS |
1466 | * Set up the input buffers. Buffer 0 is used to pass in data received from |
1467 | * the server. Schannel will consume some or all of this. Leftover data | |
1468 | * (if any) will be placed in buffer 1 and given a buffer type of | |
1469 | * SECBUFFER_EXTRA. | |
cc754834 | 1470 | */ |
2ece34a9 | 1471 | |
e32497ad MS |
1472 | inBuffers[0].pvBuffer = sspi->decryptBuffer; |
1473 | inBuffers[0].cbBuffer = (unsigned long)sspi->decryptBufferUsed; | |
cc754834 MS |
1474 | inBuffers[0].BufferType = SECBUFFER_TOKEN; |
1475 | ||
1476 | inBuffers[1].pvBuffer = NULL; | |
1477 | inBuffers[1].cbBuffer = 0; | |
1478 | inBuffers[1].BufferType = SECBUFFER_EMPTY; | |
1479 | ||
1480 | inBuffer.cBuffers = 2; | |
1481 | inBuffer.pBuffers = inBuffers; | |
1482 | inBuffer.ulVersion = SECBUFFER_VERSION; | |
1483 | ||
1484 | /* | |
2ece34a9 MS |
1485 | * Set up the output buffers. These are initialized to NULL so as to make it |
1486 | * less likely we'll attempt to free random garbage later. | |
cc754834 | 1487 | */ |
cc754834 | 1488 | |
2ece34a9 MS |
1489 | outBuffers[0].pvBuffer = NULL; |
1490 | outBuffers[0].BufferType = SECBUFFER_TOKEN; | |
1491 | outBuffers[0].cbBuffer = 0; | |
1492 | ||
1493 | outBuffer.cBuffers = 1; | |
1494 | outBuffer.pBuffers = outBuffers; | |
1495 | outBuffer.ulVersion = SECBUFFER_VERSION; | |
cc754834 MS |
1496 | |
1497 | /* | |
1498 | * Call InitializeSecurityContext. | |
1499 | */ | |
2ece34a9 | 1500 | |
e32497ad | 1501 | scRet = InitializeSecurityContext(&sspi->creds, &sspi->context, NULL, dwSSPIFlags, 0, SECURITY_NATIVE_DREP, &inBuffer, 0, NULL, &outBuffer, &dwSSPIOutFlags, &tsExpiry); |
cc754834 MS |
1502 | |
1503 | /* | |
2ece34a9 MS |
1504 | * If InitializeSecurityContext was successful (or if the error was one of |
1505 | * the special extended ones), send the contents of the output buffer to the | |
1506 | * server. | |
cc754834 | 1507 | */ |
2ece34a9 | 1508 | |
cc754834 MS |
1509 | if (scRet == SEC_E_OK || |
1510 | scRet == SEC_I_CONTINUE_NEEDED || | |
1511 | FAILED(scRet) && (dwSSPIOutFlags & ISC_RET_EXTENDED_ERROR)) | |
1512 | { | |
1513 | if (outBuffers[0].cbBuffer && outBuffers[0].pvBuffer) | |
1514 | { | |
2ece34a9 | 1515 | cbData = send(http->fd, outBuffers[0].pvBuffer, outBuffers[0].cbBuffer, 0); |
321d8d57 | 1516 | |
2ece34a9 | 1517 | if (cbData <= 0) |
cc754834 | 1518 | { |
52770f63 | 1519 | DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError())); |
cc754834 | 1520 | FreeContextBuffer(outBuffers[0].pvBuffer); |
e32497ad | 1521 | DeleteSecurityContext(&sspi->context); |
2ece34a9 | 1522 | return (-1); |
cc754834 MS |
1523 | } |
1524 | ||
52770f63 | 1525 | DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData)); |
cc754834 MS |
1526 | |
1527 | /* | |
1528 | * Free output buffer. | |
1529 | */ | |
2ece34a9 | 1530 | |
cc754834 MS |
1531 | FreeContextBuffer(outBuffers[0].pvBuffer); |
1532 | outBuffers[0].pvBuffer = NULL; | |
1533 | } | |
1534 | } | |
1535 | ||
1536 | /* | |
2ece34a9 MS |
1537 | * If InitializeSecurityContext returned SEC_E_INCOMPLETE_MESSAGE, then we |
1538 | * need to read more data from the server and try again. | |
cc754834 | 1539 | */ |
2ece34a9 | 1540 | |
cc754834 MS |
1541 | if (scRet == SEC_E_INCOMPLETE_MESSAGE) |
1542 | continue; | |
1543 | ||
1544 | /* | |
2ece34a9 MS |
1545 | * If InitializeSecurityContext returned SEC_E_OK, then the handshake |
1546 | * completed successfully. | |
cc754834 | 1547 | */ |
2ece34a9 | 1548 | |
cc754834 MS |
1549 | if (scRet == SEC_E_OK) |
1550 | { | |
1551 | /* | |
1552 | * If the "extra" buffer contains data, this is encrypted application | |
2ece34a9 MS |
1553 | * protocol layer stuff. It needs to be saved. The application layer will |
1554 | * later decrypt it with DecryptMessage. | |
cc754834 | 1555 | */ |
2ece34a9 | 1556 | |
52770f63 | 1557 | DEBUG_puts("5http_sspi_client: Handshake was successful."); |
cc754834 MS |
1558 | |
1559 | if (inBuffers[1].BufferType == SECBUFFER_EXTRA) | |
1560 | { | |
e32497ad | 1561 | memmove(sspi->decryptBuffer, sspi->decryptBuffer + sspi->decryptBufferUsed - inBuffers[1].cbBuffer, inBuffers[1].cbBuffer); |
cc754834 | 1562 | |
e32497ad | 1563 | sspi->decryptBufferUsed = inBuffers[1].cbBuffer; |
cc754834 | 1564 | |
52770f63 | 1565 | DEBUG_printf(("5http_sspi_client: %d bytes of app data was bundled with handshake data", sspi->decryptBufferUsed)); |
cc754834 MS |
1566 | } |
1567 | else | |
e32497ad | 1568 | sspi->decryptBufferUsed = 0; |
cc754834 MS |
1569 | |
1570 | /* | |
1571 | * Bail out to quit | |
1572 | */ | |
2ece34a9 | 1573 | |
cc754834 MS |
1574 | break; |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * Check for fatal error. | |
1579 | */ | |
2ece34a9 | 1580 | |
cc754834 MS |
1581 | if (FAILED(scRet)) |
1582 | { | |
52770f63 | 1583 | DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(2) failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 | 1584 | ret = -1; |
cc754834 MS |
1585 | break; |
1586 | } | |
1587 | ||
1588 | /* | |
1589 | * If InitializeSecurityContext returned SEC_I_INCOMPLETE_CREDENTIALS, | |
321d8d57 | 1590 | * then the server just requested client authentication. |
cc754834 | 1591 | */ |
2ece34a9 | 1592 | |
cc754834 MS |
1593 | if (scRet == SEC_I_INCOMPLETE_CREDENTIALS) |
1594 | { | |
1595 | /* | |
1596 | * Unimplemented | |
1597 | */ | |
2ece34a9 | 1598 | |
52770f63 | 1599 | DEBUG_printf(("5http_sspi_client: server requested client credentials.")); |
2ece34a9 | 1600 | ret = -1; |
cc754834 MS |
1601 | break; |
1602 | } | |
1603 | ||
1604 | /* | |
2ece34a9 | 1605 | * Copy any leftover data from the "extra" buffer, and go around again. |
cc754834 | 1606 | */ |
2ece34a9 | 1607 | |
cc754834 MS |
1608 | if (inBuffers[1].BufferType == SECBUFFER_EXTRA) |
1609 | { | |
e32497ad | 1610 | memmove(sspi->decryptBuffer, sspi->decryptBuffer + sspi->decryptBufferUsed - inBuffers[1].cbBuffer, inBuffers[1].cbBuffer); |
cc754834 | 1611 | |
e32497ad | 1612 | sspi->decryptBufferUsed = inBuffers[1].cbBuffer; |
cc754834 MS |
1613 | } |
1614 | else | |
1615 | { | |
e32497ad | 1616 | sspi->decryptBufferUsed = 0; |
cc754834 MS |
1617 | } |
1618 | } | |
1619 | ||
2ece34a9 | 1620 | if (!ret) |
cc754834 | 1621 | { |
cc754834 | 1622 | /* |
2ece34a9 | 1623 | * Success! Get the server cert |
cc754834 | 1624 | */ |
2ece34a9 | 1625 | |
e32497ad | 1626 | sspi->contextInitialized = TRUE; |
2ece34a9 | 1627 | |
e32497ad | 1628 | scRet = QueryContextAttributes(&sspi->context, SECPKG_ATTR_REMOTE_CERT_CONTEXT, (VOID *)&(sspi->remoteCert)); |
cc754834 MS |
1629 | |
1630 | if (scRet != SEC_E_OK) | |
1631 | { | |
52770f63 | 1632 | DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_REMOTE_CERT_CONTEXT): %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 | 1633 | return (-1); |
cc754834 MS |
1634 | } |
1635 | ||
cc754834 MS |
1636 | /* |
1637 | * Find out how big the header/trailer will be: | |
1638 | */ | |
2ece34a9 | 1639 | |
e32497ad | 1640 | scRet = QueryContextAttributes(&sspi->context, SECPKG_ATTR_STREAM_SIZES, &sspi->streamSizes); |
cc754834 MS |
1641 | |
1642 | if (scRet != SEC_E_OK) | |
1643 | { | |
52770f63 | 1644 | DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_STREAM_SIZES): %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 | 1645 | ret = -1; |
cc754834 MS |
1646 | } |
1647 | } | |
1648 | ||
2ece34a9 MS |
1649 | return (ret); |
1650 | } | |
cc754834 | 1651 | |
cc754834 | 1652 | |
17eecbf1 MS |
1653 | /* |
1654 | * 'http_sspi_create_credential()' - Create an SSPI certificate context. | |
1655 | */ | |
1656 | ||
1657 | static PCCERT_CONTEXT /* O - Certificate context */ | |
1658 | http_sspi_create_credential( | |
1659 | http_credential_t *cred) /* I - Credential */ | |
1660 | { | |
1661 | if (cred) | |
1662 | return (CertCreateCertificateContext(X509_ASN_ENCODING, cred->data, cred->datalen)); | |
1663 | else | |
1664 | return (NULL); | |
1665 | } | |
1666 | ||
1667 | ||
2ece34a9 | 1668 | /* |
e32497ad | 1669 | * 'http_sspi_find_credentials()' - Retrieve a TLS certificate from the system store. |
2ece34a9 MS |
1670 | */ |
1671 | ||
9870d12b | 1672 | static BOOL /* O - 1 on success, 0 on failure */ |
e32497ad | 1673 | http_sspi_find_credentials( |
9870d12b MS |
1674 | http_t *http, /* I - HTTP connection */ |
1675 | const LPWSTR container, /* I - Cert container name */ | |
e32497ad | 1676 | const char *common_name) /* I - Common name of certificate */ |
cc754834 | 1677 | { |
e32497ad | 1678 | _http_sspi_t *sspi = http->tls; /* SSPI data */ |
9870d12b MS |
1679 | HCERTSTORE store = NULL; /* Certificate store */ |
1680 | PCCERT_CONTEXT storedContext = NULL; /* Context created from the store */ | |
9870d12b MS |
1681 | DWORD dwSize = 0; /* 32 bit size */ |
1682 | PBYTE p = NULL; /* Temporary storage */ | |
1683 | HCRYPTPROV hProv = (HCRYPTPROV)NULL; | |
2ece34a9 | 1684 | /* Handle to a CSP */ |
9870d12b MS |
1685 | CERT_NAME_BLOB sib; /* Arbitrary array of bytes */ |
1686 | SCHANNEL_CRED SchannelCred; /* Schannel credential data */ | |
1687 | TimeStamp tsExpiry; /* Time stamp */ | |
1688 | SECURITY_STATUS Status; /* Status */ | |
9870d12b | 1689 | BOOL ok = TRUE; /* Return value */ |
cc754834 | 1690 | |
cc754834 | 1691 | |
9870d12b | 1692 | if (!CryptAcquireContextW(&hProv, (LPWSTR)container, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET)) |
cc754834 | 1693 | { |
2ece34a9 | 1694 | if (GetLastError() == NTE_EXISTS) |
cc754834 | 1695 | { |
9870d12b | 1696 | if (!CryptAcquireContextW(&hProv, (LPWSTR)container, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET)) |
cc754834 | 1697 | { |
52770f63 | 1698 | DEBUG_printf(("5http_sspi_find_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
cc754834 MS |
1699 | ok = FALSE; |
1700 | goto cleanup; | |
1701 | } | |
cc754834 | 1702 | } |
2ece34a9 | 1703 | } |
cc754834 | 1704 | |
9870d12b | 1705 | store = CertOpenStore(CERT_STORE_PROV_SYSTEM, X509_ASN_ENCODING|PKCS_7_ASN_ENCODING, hProv, CERT_SYSTEM_STORE_LOCAL_MACHINE | CERT_STORE_NO_CRYPT_RELEASE_FLAG | CERT_STORE_OPEN_EXISTING_FLAG, L"MY"); |
cc754834 | 1706 | |
2ece34a9 MS |
1707 | if (!store) |
1708 | { | |
52770f63 | 1709 | DEBUG_printf(("5http_sspi_find_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
2ece34a9 MS |
1710 | ok = FALSE; |
1711 | goto cleanup; | |
1712 | } | |
cc754834 | 1713 | |
2ece34a9 | 1714 | dwSize = 0; |
cc754834 | 1715 | |
9870d12b | 1716 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, NULL, &dwSize, NULL)) |
2ece34a9 | 1717 | { |
52770f63 | 1718 | DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
2ece34a9 MS |
1719 | ok = FALSE; |
1720 | goto cleanup; | |
1721 | } | |
cc754834 | 1722 | |
9870d12b | 1723 | p = (PBYTE)malloc(dwSize); |
cc754834 | 1724 | |
2ece34a9 MS |
1725 | if (!p) |
1726 | { | |
52770f63 | 1727 | DEBUG_printf(("5http_sspi_find_credentials: malloc failed for %d bytes.", dwSize)); |
2ece34a9 MS |
1728 | ok = FALSE; |
1729 | goto cleanup; | |
1730 | } | |
cc754834 | 1731 | |
9870d12b | 1732 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, p, &dwSize, NULL)) |
2ece34a9 | 1733 | { |
52770f63 | 1734 | DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
2ece34a9 MS |
1735 | ok = FALSE; |
1736 | goto cleanup; | |
1737 | } | |
cc754834 | 1738 | |
2ece34a9 MS |
1739 | sib.cbData = dwSize; |
1740 | sib.pbData = p; | |
cc754834 | 1741 | |
9870d12b | 1742 | storedContext = CertFindCertificateInStore(store, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_SUBJECT_NAME, &sib, NULL); |
cc754834 | 1743 | |
2ece34a9 MS |
1744 | if (!storedContext) |
1745 | { | |
52770f63 | 1746 | DEBUG_printf(("5http_sspi_find_credentials: Unable to find credentials for \"%s\".", common_name)); |
e32497ad MS |
1747 | ok = FALSE; |
1748 | goto cleanup; | |
cc754834 MS |
1749 | } |
1750 | ||
2ece34a9 | 1751 | ZeroMemory(&SchannelCred, sizeof(SchannelCred)); |
cc754834 | 1752 | |
2ece34a9 | 1753 | SchannelCred.dwVersion = SCHANNEL_CRED_VERSION; |
9870d12b MS |
1754 | SchannelCred.cCreds = 1; |
1755 | SchannelCred.paCred = &storedContext; | |
cc754834 | 1756 | |
2ece34a9 | 1757 | /* |
63aefcd5 | 1758 | * Set supported protocols (can also be overriden in the registry...) |
2ece34a9 | 1759 | */ |
9870d12b | 1760 | |
5c460b65 | 1761 | #ifdef SP_PROT_TLS1_2_SERVER |
e32497ad | 1762 | if (http->mode == _HTTP_MODE_SERVER) |
63aefcd5 | 1763 | { |
ee6226a5 MS |
1764 | if (tls_options & _HTTP_TLS_DENY_TLS10) |
1765 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_1_SERVER; | |
1766 | else if (tls_options & _HTTP_TLS_ALLOW_SSL3) | |
5c460b65 | 1767 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_1_SERVER | SP_PROT_TLS1_0_SERVER | SP_PROT_SSL3_SERVER; |
63aefcd5 | 1768 | else |
5c460b65 | 1769 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_SERVER | SP_PROT_TLS1_1_SERVER | SP_PROT_TLS1_0_SERVER; |
63aefcd5 MS |
1770 | } |
1771 | else | |
1772 | { | |
ee6226a5 MS |
1773 | if (tls_options & _HTTP_TLS_DENY_TLS10) |
1774 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_1_CLIENT; | |
1775 | else if (tls_options & _HTTP_TLS_ALLOW_SSL3) | |
5c460b65 | 1776 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_0_CLIENT | SP_PROT_SSL3_CLIENT; |
63aefcd5 | 1777 | else |
5c460b65 | 1778 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_2_CLIENT | SP_PROT_TLS1_1_CLIENT | SP_PROT_TLS1_0_CLIENT; |
63aefcd5 MS |
1779 | } |
1780 | ||
5c460b65 MS |
1781 | #else |
1782 | if (http->mode == _HTTP_MODE_SERVER) | |
1783 | { | |
8f1fbdec | 1784 | if (tls_min_version == _HTTP_TLS_SSL3) |
5c460b65 MS |
1785 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_SERVER | SP_PROT_SSL3_SERVER; |
1786 | else | |
1787 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_SERVER; | |
1788 | } | |
1789 | else | |
1790 | { | |
8f1fbdec | 1791 | if (tls_min_version == _HTTP_TLS_SSL3) |
5c460b65 MS |
1792 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_CLIENT | SP_PROT_SSL3_CLIENT; |
1793 | else | |
1794 | SchannelCred.grbitEnabledProtocols = SP_PROT_TLS1_CLIENT; | |
1795 | } | |
1796 | #endif /* SP_PROT_TLS1_2_SERVER */ | |
1797 | ||
f2e87147 | 1798 | /* TODO: Support _HTTP_TLS_ALLOW_RC4, _HTTP_TLS_ALLOW_DH, and _HTTP_TLS_DENY_CBC options; right now we'll rely on Windows registry to enable/disable RC4/DH/CBC... */ |
cc754834 | 1799 | |
2ece34a9 MS |
1800 | /* |
1801 | * Create an SSPI credential. | |
1802 | */ | |
9870d12b | 1803 | |
e32497ad | 1804 | Status = AcquireCredentialsHandle(NULL, UNISP_NAME, http->mode == _HTTP_MODE_SERVER ? SECPKG_CRED_INBOUND : SECPKG_CRED_OUTBOUND, NULL, &SchannelCred, NULL, NULL, &sspi->creds, &tsExpiry); |
2ece34a9 | 1805 | if (Status != SEC_E_OK) |
cc754834 | 1806 | { |
52770f63 | 1807 | DEBUG_printf(("5http_sspi_find_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), Status))); |
2ece34a9 | 1808 | ok = FALSE; |
cc754834 MS |
1809 | goto cleanup; |
1810 | } | |
1811 | ||
2ece34a9 | 1812 | cleanup: |
cc754834 | 1813 | |
2ece34a9 MS |
1814 | /* |
1815 | * Cleanup | |
1816 | */ | |
9870d12b | 1817 | |
2ece34a9 MS |
1818 | if (storedContext) |
1819 | CertFreeCertificateContext(storedContext); | |
cc754834 | 1820 | |
2ece34a9 MS |
1821 | if (p) |
1822 | free(p); | |
cc754834 | 1823 | |
2ece34a9 MS |
1824 | if (store) |
1825 | CertCloseStore(store, 0); | |
cc754834 | 1826 | |
2ece34a9 MS |
1827 | if (hProv) |
1828 | CryptReleaseContext(hProv, 0); | |
cc754834 | 1829 | |
2ece34a9 | 1830 | return (ok); |
cc754834 | 1831 | } |
9870d12b MS |
1832 | |
1833 | ||
1834 | /* | |
1835 | * 'http_sspi_free()' - Close a connection and free resources. | |
1836 | */ | |
1837 | ||
1838 | static void | |
e32497ad | 1839 | http_sspi_free(_http_sspi_t *sspi) /* I - SSPI data */ |
9870d12b | 1840 | { |
e32497ad | 1841 | if (!sspi) |
9870d12b MS |
1842 | return; |
1843 | ||
e32497ad MS |
1844 | if (sspi->contextInitialized) |
1845 | DeleteSecurityContext(&sspi->context); | |
1846 | ||
1847 | if (sspi->decryptBuffer) | |
1848 | free(sspi->decryptBuffer); | |
1849 | ||
1850 | if (sspi->readBuffer) | |
1851 | free(sspi->readBuffer); | |
1852 | ||
1853 | if (sspi->writeBuffer) | |
1854 | free(sspi->writeBuffer); | |
1855 | ||
1856 | if (sspi->localCert) | |
1857 | CertFreeCertificateContext(sspi->localCert); | |
1858 | ||
1859 | if (sspi->remoteCert) | |
1860 | CertFreeCertificateContext(sspi->remoteCert); | |
1861 | ||
1862 | free(sspi); | |
1863 | } | |
1864 | ||
1865 | ||
1866 | /* | |
1867 | * 'http_sspi_make_credentials()' - Create a TLS certificate in the system store. | |
1868 | */ | |
1869 | ||
1870 | static BOOL /* O - 1 on success, 0 on failure */ | |
1871 | http_sspi_make_credentials( | |
1872 | _http_sspi_t *sspi, /* I - SSPI data */ | |
1873 | const LPWSTR container, /* I - Cert container name */ | |
1874 | const char *common_name, /* I - Common name of certificate */ | |
1875 | _http_mode_t mode, /* I - Client or server? */ | |
1876 | int years) /* I - Years until expiration */ | |
1877 | { | |
1878 | HCERTSTORE store = NULL; /* Certificate store */ | |
1879 | PCCERT_CONTEXT storedContext = NULL; /* Context created from the store */ | |
1880 | PCCERT_CONTEXT createdContext = NULL; /* Context created by us */ | |
1881 | DWORD dwSize = 0; /* 32 bit size */ | |
1882 | PBYTE p = NULL; /* Temporary storage */ | |
1883 | HCRYPTPROV hProv = (HCRYPTPROV)NULL; | |
1884 | /* Handle to a CSP */ | |
1885 | CERT_NAME_BLOB sib; /* Arbitrary array of bytes */ | |
1886 | SCHANNEL_CRED SchannelCred; /* Schannel credential data */ | |
1887 | TimeStamp tsExpiry; /* Time stamp */ | |
1888 | SECURITY_STATUS Status; /* Status */ | |
1889 | HCRYPTKEY hKey = (HCRYPTKEY)NULL; /* Handle to crypto key */ | |
1890 | CRYPT_KEY_PROV_INFO kpi; /* Key container info */ | |
1891 | SYSTEMTIME et; /* System time */ | |
1892 | CERT_EXTENSIONS exts; /* Array of cert extensions */ | |
1893 | CRYPT_KEY_PROV_INFO ckp; /* Handle to crypto key */ | |
1894 | BOOL ok = TRUE; /* Return value */ | |
1895 | ||
1896 | ||
1897 | DEBUG_printf(("4http_sspi_make_credentials(sspi=%p, container=%p, common_name=\"%s\", mode=%d, years=%d)", sspi, container, common_name, mode, years)); | |
1898 | ||
1899 | if (!CryptAcquireContextW(&hProv, (LPWSTR)container, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_NEWKEYSET | CRYPT_MACHINE_KEYSET)) | |
1900 | { | |
1901 | if (GetLastError() == NTE_EXISTS) | |
1902 | { | |
1903 | if (!CryptAcquireContextW(&hProv, (LPWSTR)container, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_MACHINE_KEYSET)) | |
1904 | { | |
52770f63 | 1905 | DEBUG_printf(("5http_sspi_make_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1906 | ok = FALSE; |
1907 | goto cleanup; | |
1908 | } | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | store = CertOpenStore(CERT_STORE_PROV_SYSTEM, X509_ASN_ENCODING|PKCS_7_ASN_ENCODING, hProv, CERT_SYSTEM_STORE_LOCAL_MACHINE | CERT_STORE_NO_CRYPT_RELEASE_FLAG | CERT_STORE_OPEN_EXISTING_FLAG, L"MY"); | |
1913 | ||
1914 | if (!store) | |
1915 | { | |
52770f63 | 1916 | DEBUG_printf(("5http_sspi_make_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1917 | ok = FALSE; |
1918 | goto cleanup; | |
1919 | } | |
1920 | ||
1921 | dwSize = 0; | |
1922 | ||
1923 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, NULL, &dwSize, NULL)) | |
1924 | { | |
52770f63 | 1925 | DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1926 | ok = FALSE; |
1927 | goto cleanup; | |
1928 | } | |
1929 | ||
1930 | p = (PBYTE)malloc(dwSize); | |
1931 | ||
1932 | if (!p) | |
1933 | { | |
52770f63 | 1934 | DEBUG_printf(("5http_sspi_make_credentials: malloc failed for %d bytes", dwSize)); |
e32497ad MS |
1935 | ok = FALSE; |
1936 | goto cleanup; | |
1937 | } | |
1938 | ||
1939 | if (!CertStrToName(X509_ASN_ENCODING, common_name, CERT_OID_NAME_STR, NULL, p, &dwSize, NULL)) | |
1940 | { | |
52770f63 | 1941 | DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1942 | ok = FALSE; |
1943 | goto cleanup; | |
1944 | } | |
1945 | ||
1946 | /* | |
52770f63 | 1947 | * Create a private key and self-signed certificate... |
e32497ad | 1948 | */ |
9870d12b | 1949 | |
e32497ad MS |
1950 | if (!CryptGenKey(hProv, AT_KEYEXCHANGE, CRYPT_EXPORTABLE, &hKey)) |
1951 | { | |
52770f63 | 1952 | DEBUG_printf(("5http_sspi_make_credentials: CryptGenKey failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1953 | ok = FALSE; |
1954 | goto cleanup; | |
1955 | } | |
1956 | ||
1957 | ZeroMemory(&kpi, sizeof(kpi)); | |
1958 | kpi.pwszContainerName = (LPWSTR)container; | |
1959 | kpi.pwszProvName = MS_DEF_PROV_W; | |
1960 | kpi.dwProvType = PROV_RSA_FULL; | |
1961 | kpi.dwFlags = CERT_SET_KEY_CONTEXT_PROP_ID; | |
1962 | kpi.dwKeySpec = AT_KEYEXCHANGE; | |
1963 | ||
1964 | GetSystemTime(&et); | |
1965 | et.wYear += years; | |
9870d12b | 1966 | |
e32497ad | 1967 | ZeroMemory(&exts, sizeof(exts)); |
9870d12b | 1968 | |
e32497ad | 1969 | createdContext = CertCreateSelfSignCertificate(hProv, &sib, 0, &kpi, NULL, NULL, &et, &exts); |
9870d12b | 1970 | |
e32497ad MS |
1971 | if (!createdContext) |
1972 | { | |
52770f63 | 1973 | DEBUG_printf(("5http_sspi_make_credentials: CertCreateSelfSignCertificate failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1974 | ok = FALSE; |
1975 | goto cleanup; | |
1976 | } | |
9870d12b | 1977 | |
52770f63 MS |
1978 | /* |
1979 | * Add the created context to the named store, and associate it with the named | |
1980 | * container... | |
1981 | */ | |
1982 | ||
e32497ad MS |
1983 | if (!CertAddCertificateContextToStore(store, createdContext, CERT_STORE_ADD_REPLACE_EXISTING, &storedContext)) |
1984 | { | |
52770f63 | 1985 | DEBUG_printf(("5http_sspi_make_credentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
1986 | ok = FALSE; |
1987 | goto cleanup; | |
1988 | } | |
1989 | ||
1990 | ZeroMemory(&ckp, sizeof(ckp)); | |
1991 | ckp.pwszContainerName = (LPWSTR) container; | |
1992 | ckp.pwszProvName = MS_DEF_PROV_W; | |
1993 | ckp.dwProvType = PROV_RSA_FULL; | |
1994 | ckp.dwFlags = CRYPT_MACHINE_KEYSET; | |
1995 | ckp.dwKeySpec = AT_KEYEXCHANGE; | |
1996 | ||
1997 | if (!CertSetCertificateContextProperty(storedContext, CERT_KEY_PROV_INFO_PROP_ID, 0, &ckp)) | |
1998 | { | |
52770f63 | 1999 | DEBUG_printf(("5http_sspi_make_credentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), GetLastError()))); |
e32497ad MS |
2000 | ok = FALSE; |
2001 | goto cleanup; | |
2002 | } | |
2003 | ||
52770f63 MS |
2004 | /* |
2005 | * Get a handle to use the certificate... | |
2006 | */ | |
e32497ad MS |
2007 | |
2008 | ZeroMemory(&SchannelCred, sizeof(SchannelCred)); | |
2009 | ||
2010 | SchannelCred.dwVersion = SCHANNEL_CRED_VERSION; | |
2011 | SchannelCred.cCreds = 1; | |
2012 | SchannelCred.paCred = &storedContext; | |
2013 | ||
2014 | /* | |
2015 | * SSPI doesn't seem to like it if grbitEnabledProtocols is set for a client. | |
2016 | */ | |
2017 | ||
2018 | if (mode == _HTTP_MODE_SERVER) | |
2019 | SchannelCred.grbitEnabledProtocols = SP_PROT_SSL3TLS1; | |
2020 | ||
2021 | /* | |
2022 | * Create an SSPI credential. | |
2023 | */ | |
2024 | ||
2025 | Status = AcquireCredentialsHandle(NULL, UNISP_NAME, mode == _HTTP_MODE_SERVER ? SECPKG_CRED_INBOUND : SECPKG_CRED_OUTBOUND, NULL, &SchannelCred, NULL, NULL, &sspi->creds, &tsExpiry); | |
2026 | if (Status != SEC_E_OK) | |
2027 | { | |
52770f63 | 2028 | DEBUG_printf(("5http_sspi_make_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), Status))); |
e32497ad MS |
2029 | ok = FALSE; |
2030 | goto cleanup; | |
2031 | } | |
2032 | ||
2033 | cleanup: | |
2034 | ||
2035 | /* | |
2036 | * Cleanup | |
2037 | */ | |
2038 | ||
2039 | if (hKey) | |
2040 | CryptDestroyKey(hKey); | |
2041 | ||
2042 | if (createdContext) | |
2043 | CertFreeCertificateContext(createdContext); | |
2044 | ||
2045 | if (storedContext) | |
2046 | CertFreeCertificateContext(storedContext); | |
9870d12b | 2047 | |
e32497ad MS |
2048 | if (p) |
2049 | free(p); | |
2050 | ||
2051 | if (store) | |
2052 | CertCloseStore(store, 0); | |
2053 | ||
2054 | if (hProv) | |
2055 | CryptReleaseContext(hProv, 0); | |
2056 | ||
2057 | return (ok); | |
9870d12b | 2058 | } |
cc754834 MS |
2059 | |
2060 | ||
2061 | /* | |
2ece34a9 | 2062 | * 'http_sspi_server()' - Negotiate a TLS connection as a server. |
cc754834 | 2063 | */ |
2ece34a9 MS |
2064 | |
2065 | static int /* O - 0 on success, -1 on failure */ | |
2066 | http_sspi_server(http_t *http, /* I - HTTP connection */ | |
2067 | const char *hostname) /* I - Hostname of server */ | |
cc754834 | 2068 | { |
e32497ad MS |
2069 | _http_sspi_t *sspi = http->tls; /* I - SSPI data */ |
2070 | char common_name[512]; /* Common name for cert */ | |
2ece34a9 MS |
2071 | DWORD dwSSPIFlags; /* SSL connection attributes we want */ |
2072 | DWORD dwSSPIOutFlags; /* SSL connection attributes we got */ | |
2073 | TimeStamp tsExpiry; /* Time stamp */ | |
2074 | SECURITY_STATUS scRet; /* SSPI Status */ | |
2075 | SecBufferDesc inBuffer; /* Array of SecBuffer structs */ | |
2076 | SecBuffer inBuffers[2]; /* Security package buffer */ | |
2077 | SecBufferDesc outBuffer; /* Array of SecBuffer structs */ | |
2078 | SecBuffer outBuffers[1]; /* Security package buffer */ | |
2079 | int num = 0; /* 32 bit status value */ | |
2080 | BOOL fInitContext = TRUE; /* Has the context been init'd? */ | |
2081 | int ret = 0; /* Return value */ | |
2082 | ||
2083 | ||
52770f63 | 2084 | DEBUG_printf(("4http_sspi_server(http=%p, hostname=\"%s\")", http, hostname)); |
cc754834 | 2085 | |
2ece34a9 MS |
2086 | dwSSPIFlags = ASC_REQ_SEQUENCE_DETECT | |
2087 | ASC_REQ_REPLAY_DETECT | | |
2088 | ASC_REQ_CONFIDENTIALITY | | |
2089 | ASC_REQ_EXTENDED_ERROR | | |
2090 | ASC_REQ_ALLOCATE_MEMORY | | |
2091 | ASC_REQ_STREAM; | |
2092 | ||
e32497ad MS |
2093 | sspi->decryptBufferUsed = 0; |
2094 | ||
2095 | /* | |
2096 | * Lookup the server certificate... | |
2097 | */ | |
2098 | ||
2099 | snprintf(common_name, sizeof(common_name), "CN=%s", hostname); | |
2100 | ||
2101 | if (!http_sspi_find_credentials(http, L"ServerContainer", common_name)) | |
2102 | if (!http_sspi_make_credentials(http->tls, L"ServerContainer", common_name, _HTTP_MODE_SERVER, 10)) | |
2103 | { | |
52770f63 | 2104 | DEBUG_puts("5http_sspi_server: Unable to get server credentials."); |
e32497ad MS |
2105 | return (-1); |
2106 | } | |
cc754834 MS |
2107 | |
2108 | /* | |
2ece34a9 | 2109 | * Set OutBuffer for AcceptSecurityContext call |
cc754834 | 2110 | */ |
cc754834 | 2111 | |
2ece34a9 MS |
2112 | outBuffer.cBuffers = 1; |
2113 | outBuffer.pBuffers = outBuffers; | |
2114 | outBuffer.ulVersion = SECBUFFER_VERSION; | |
cc754834 | 2115 | |
2ece34a9 | 2116 | scRet = SEC_I_CONTINUE_NEEDED; |
cc754834 | 2117 | |
2ece34a9 MS |
2118 | while (scRet == SEC_I_CONTINUE_NEEDED || |
2119 | scRet == SEC_E_INCOMPLETE_MESSAGE || | |
2120 | scRet == SEC_I_INCOMPLETE_CREDENTIALS) | |
cc754834 | 2121 | { |
e32497ad | 2122 | if (sspi->decryptBufferUsed == 0 || scRet == SEC_E_INCOMPLETE_MESSAGE) |
cc754834 | 2123 | { |
e32497ad | 2124 | if (sspi->decryptBufferLength <= sspi->decryptBufferUsed) |
cc754834 | 2125 | { |
2ece34a9 | 2126 | BYTE *temp; /* New buffer */ |
cc754834 | 2127 | |
e32497ad | 2128 | if (sspi->decryptBufferLength >= 262144) |
2ece34a9 MS |
2129 | { |
2130 | WSASetLastError(E_OUTOFMEMORY); | |
52770f63 | 2131 | DEBUG_puts("5http_sspi_server: Decryption buffer too large (>256k)"); |
2ece34a9 MS |
2132 | return (-1); |
2133 | } | |
cc754834 | 2134 | |
e32497ad | 2135 | if ((temp = realloc(sspi->decryptBuffer, sspi->decryptBufferLength + 4096)) == NULL) |
2ece34a9 | 2136 | { |
52770f63 | 2137 | DEBUG_printf(("5http_sspi_server: Unable to allocate %d byte buffer.", sspi->decryptBufferLength + 4096)); |
2ece34a9 MS |
2138 | WSASetLastError(E_OUTOFMEMORY); |
2139 | return (-1); | |
2140 | } | |
cc754834 | 2141 | |
e32497ad MS |
2142 | sspi->decryptBufferLength += 4096; |
2143 | sspi->decryptBuffer = temp; | |
2ece34a9 | 2144 | } |
cc754834 | 2145 | |
2ece34a9 | 2146 | for (;;) |
cc754834 | 2147 | { |
e32497ad | 2148 | num = recv(http->fd, sspi->decryptBuffer + sspi->decryptBufferUsed, (int)(sspi->decryptBufferLength - sspi->decryptBufferUsed), 0); |
cc754834 | 2149 | |
33c9220c | 2150 | if (num == -1 && WSAGetLastError() == WSAEWOULDBLOCK) |
2ece34a9 | 2151 | Sleep(1); |
cc754834 | 2152 | else |
2ece34a9 | 2153 | break; |
cc754834 | 2154 | } |
cc754834 | 2155 | |
2ece34a9 MS |
2156 | if (num < 0) |
2157 | { | |
52770f63 | 2158 | DEBUG_printf(("5http_sspi_server: recv failed: %d", WSAGetLastError())); |
2ece34a9 MS |
2159 | return (-1); |
2160 | } | |
2161 | else if (num == 0) | |
2162 | { | |
52770f63 | 2163 | DEBUG_puts("5http_sspi_server: client disconnected"); |
2ece34a9 MS |
2164 | return (-1); |
2165 | } | |
2166 | ||
52770f63 | 2167 | DEBUG_printf(("5http_sspi_server: received %d (handshake) bytes from client.", num)); |
e32497ad | 2168 | sspi->decryptBufferUsed += num; |
cc754834 MS |
2169 | } |
2170 | ||
2171 | /* | |
2ece34a9 MS |
2172 | * InBuffers[1] is for getting extra data that SSPI/SCHANNEL doesn't process |
2173 | * on this run around the loop. | |
cc754834 | 2174 | */ |
2ece34a9 | 2175 | |
e32497ad MS |
2176 | inBuffers[0].pvBuffer = sspi->decryptBuffer; |
2177 | inBuffers[0].cbBuffer = (unsigned long)sspi->decryptBufferUsed; | |
2ece34a9 MS |
2178 | inBuffers[0].BufferType = SECBUFFER_TOKEN; |
2179 | ||
2180 | inBuffers[1].pvBuffer = NULL; | |
2181 | inBuffers[1].cbBuffer = 0; | |
2182 | inBuffers[1].BufferType = SECBUFFER_EMPTY; | |
2183 | ||
2184 | inBuffer.cBuffers = 2; | |
2185 | inBuffer.pBuffers = inBuffers; | |
2186 | inBuffer.ulVersion = SECBUFFER_VERSION; | |
cc754834 MS |
2187 | |
2188 | /* | |
2ece34a9 MS |
2189 | * Initialize these so if we fail, pvBuffer contains NULL, so we don't try to |
2190 | * free random garbage at the quit. | |
cc754834 | 2191 | */ |
cc754834 | 2192 | |
2ece34a9 MS |
2193 | outBuffers[0].pvBuffer = NULL; |
2194 | outBuffers[0].BufferType = SECBUFFER_TOKEN; | |
2195 | outBuffers[0].cbBuffer = 0; | |
2196 | ||
e32497ad | 2197 | scRet = AcceptSecurityContext(&sspi->creds, (fInitContext?NULL:&sspi->context), &inBuffer, dwSSPIFlags, SECURITY_NATIVE_DREP, (fInitContext?&sspi->context:NULL), &outBuffer, &dwSSPIOutFlags, &tsExpiry); |
cc754834 | 2198 | |
2ece34a9 MS |
2199 | fInitContext = FALSE; |
2200 | ||
2201 | if (scRet == SEC_E_OK || | |
2202 | scRet == SEC_I_CONTINUE_NEEDED || | |
2203 | (FAILED(scRet) && ((dwSSPIOutFlags & ISC_RET_EXTENDED_ERROR) != 0))) | |
2204 | { | |
2205 | if (outBuffers[0].cbBuffer && outBuffers[0].pvBuffer) | |
cc754834 | 2206 | { |
2ece34a9 MS |
2207 | /* |
2208 | * Send response to server if there is one. | |
2209 | */ | |
cc754834 | 2210 | |
2ece34a9 MS |
2211 | num = send(http->fd, outBuffers[0].pvBuffer, outBuffers[0].cbBuffer, 0); |
2212 | ||
2213 | if (num <= 0) | |
2214 | { | |
52770f63 | 2215 | DEBUG_printf(("5http_sspi_server: handshake send failed: %d", WSAGetLastError())); |
2ece34a9 | 2216 | return (-1); |
cc754834 MS |
2217 | } |
2218 | ||
52770f63 | 2219 | DEBUG_printf(("5http_sspi_server: sent %d handshake bytes to client.", outBuffers[0].cbBuffer)); |
cc754834 | 2220 | |
2ece34a9 MS |
2221 | FreeContextBuffer(outBuffers[0].pvBuffer); |
2222 | outBuffers[0].pvBuffer = NULL; | |
cc754834 | 2223 | } |
2ece34a9 MS |
2224 | } |
2225 | ||
2226 | if (scRet == SEC_E_OK) | |
2227 | { | |
2228 | /* | |
2229 | * If there's extra data then save it for next time we go to decrypt. | |
2230 | */ | |
cc754834 | 2231 | |
2ece34a9 MS |
2232 | if (inBuffers[1].BufferType == SECBUFFER_EXTRA) |
2233 | { | |
e32497ad MS |
2234 | memcpy(sspi->decryptBuffer, (LPBYTE)(sspi->decryptBuffer + sspi->decryptBufferUsed - inBuffers[1].cbBuffer), inBuffers[1].cbBuffer); |
2235 | sspi->decryptBufferUsed = inBuffers[1].cbBuffer; | |
2ece34a9 MS |
2236 | } |
2237 | else | |
2238 | { | |
e32497ad | 2239 | sspi->decryptBufferUsed = 0; |
2ece34a9 MS |
2240 | } |
2241 | break; | |
cc754834 | 2242 | } |
2ece34a9 | 2243 | else if (FAILED(scRet) && scRet != SEC_E_INCOMPLETE_MESSAGE) |
cc754834 | 2244 | { |
52770f63 | 2245 | DEBUG_printf(("5http_sspi_server: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 MS |
2246 | ret = -1; |
2247 | break; | |
cc754834 MS |
2248 | } |
2249 | ||
2ece34a9 MS |
2250 | if (scRet != SEC_E_INCOMPLETE_MESSAGE && |
2251 | scRet != SEC_I_INCOMPLETE_CREDENTIALS) | |
cc754834 | 2252 | { |
2ece34a9 MS |
2253 | if (inBuffers[1].BufferType == SECBUFFER_EXTRA) |
2254 | { | |
e32497ad MS |
2255 | memcpy(sspi->decryptBuffer, (LPBYTE)(sspi->decryptBuffer + sspi->decryptBufferUsed - inBuffers[1].cbBuffer), inBuffers[1].cbBuffer); |
2256 | sspi->decryptBufferUsed = inBuffers[1].cbBuffer; | |
2ece34a9 MS |
2257 | } |
2258 | else | |
2259 | { | |
e32497ad | 2260 | sspi->decryptBufferUsed = 0; |
2ece34a9 | 2261 | } |
cc754834 | 2262 | } |
2ece34a9 MS |
2263 | } |
2264 | ||
2265 | if (!ret) | |
2266 | { | |
e32497ad | 2267 | sspi->contextInitialized = TRUE; |
2ece34a9 MS |
2268 | |
2269 | /* | |
2270 | * Find out how big the header will be: | |
2271 | */ | |
2272 | ||
e32497ad | 2273 | scRet = QueryContextAttributes(&sspi->context, SECPKG_ATTR_STREAM_SIZES, &sspi->streamSizes); |
2ece34a9 MS |
2274 | |
2275 | if (scRet != SEC_E_OK) | |
cc754834 | 2276 | { |
52770f63 | 2277 | DEBUG_printf(("5http_sspi_server: QueryContextAttributes failed: %s", http_sspi_strerror(sspi->error, sizeof(sspi->error), scRet))); |
2ece34a9 | 2278 | ret = -1; |
cc754834 MS |
2279 | } |
2280 | } | |
2281 | ||
2ece34a9 | 2282 | return (ret); |
cc754834 MS |
2283 | } |
2284 | ||
2285 | ||
adad9dd6 MS |
2286 | /* |
2287 | * 'http_sspi_strerror()' - Return a string for the specified error code. | |
2288 | */ | |
2289 | ||
2290 | static const char * /* O - String for error */ | |
52770f63 MS |
2291 | http_sspi_strerror(char *buffer, /* I - Error message buffer */ |
2292 | size_t bufsize, /* I - Size of buffer */ | |
2293 | DWORD code) /* I - Error code */ | |
adad9dd6 | 2294 | { |
52770f63 | 2295 | if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, code, 0, buffer, bufsize, NULL)) |
adad9dd6 MS |
2296 | { |
2297 | /* | |
2298 | * Strip trailing CR + LF... | |
2299 | */ | |
2300 | ||
2301 | char *ptr; /* Pointer into error message */ | |
2302 | ||
52770f63 | 2303 | for (ptr = buffer + strlen(buffer) - 1; ptr >= buffer; ptr --) |
adad9dd6 MS |
2304 | if (*ptr == '\n' || *ptr == '\r') |
2305 | *ptr = '\0'; | |
2306 | else | |
2307 | break; | |
2308 | } | |
2309 | else | |
52770f63 | 2310 | snprintf(buffer, bufsize, "Unknown error %x", code); |
cc754834 | 2311 | |
52770f63 | 2312 | return (buffer); |
cc754834 MS |
2313 | } |
2314 | ||
2315 | ||
2316 | /* | |
2ece34a9 | 2317 | * 'http_sspi_verify()' - Verify a certificate. |
cc754834 | 2318 | */ |
2ece34a9 MS |
2319 | |
2320 | static DWORD /* O - Error code (0 == No error) */ | |
2321 | http_sspi_verify( | |
2322 | PCCERT_CONTEXT cert, /* I - Server certificate */ | |
2323 | const char *common_name, /* I - Common name */ | |
2324 | DWORD dwCertFlags) /* I - Verification flags */ | |
cc754834 | 2325 | { |
2ece34a9 MS |
2326 | HTTPSPolicyCallbackData httpsPolicy; /* HTTPS Policy Struct */ |
2327 | CERT_CHAIN_POLICY_PARA policyPara; /* Cert chain policy parameters */ | |
2328 | CERT_CHAIN_POLICY_STATUS policyStatus;/* Cert chain policy status */ | |
2329 | CERT_CHAIN_PARA chainPara; /* Used for searching and matching criteria */ | |
2330 | PCCERT_CHAIN_CONTEXT chainContext = NULL; | |
cc754834 | 2331 | /* Certificate chain */ |
2ece34a9 MS |
2332 | PWSTR commonNameUnicode = NULL; |
2333 | /* Unicode common name */ | |
2334 | LPSTR rgszUsages[] = { szOID_PKIX_KP_SERVER_AUTH, | |
2335 | szOID_SERVER_GATED_CRYPTO, | |
2336 | szOID_SGC_NETSCAPE }; | |
cc754834 | 2337 | /* How are we using this certificate? */ |
2ece34a9 | 2338 | DWORD cUsages = sizeof(rgszUsages) / sizeof(LPSTR); |
cc754834 | 2339 | /* Number of ites in rgszUsages */ |
2ece34a9 MS |
2340 | DWORD count; /* 32 bit count variable */ |
2341 | DWORD status; /* Return value */ | |
74ac5fe7 MS |
2342 | #ifdef DEBUG |
2343 | char error[1024]; /* Error message string */ | |
2344 | #endif /* DEBUG */ | |
cc754834 | 2345 | |
2ece34a9 MS |
2346 | |
2347 | if (!cert) | |
2348 | return (SEC_E_WRONG_PRINCIPAL); | |
cc754834 MS |
2349 | |
2350 | /* | |
2ece34a9 | 2351 | * Convert common name to Unicode. |
cc754834 | 2352 | */ |
cc754834 | 2353 | |
2ece34a9 MS |
2354 | if (!common_name || !*common_name) |
2355 | return (SEC_E_WRONG_PRINCIPAL); | |
2356 | ||
2357 | count = MultiByteToWideChar(CP_ACP, 0, common_name, -1, NULL, 0); | |
2358 | commonNameUnicode = LocalAlloc(LMEM_FIXED, count * sizeof(WCHAR)); | |
2359 | if (!commonNameUnicode) | |
2360 | return (SEC_E_INSUFFICIENT_MEMORY); | |
2361 | ||
2362 | if (!MultiByteToWideChar(CP_ACP, 0, common_name, -1, commonNameUnicode, count)) | |
cc754834 | 2363 | { |
2ece34a9 MS |
2364 | LocalFree(commonNameUnicode); |
2365 | return (SEC_E_WRONG_PRINCIPAL); | |
cc754834 MS |
2366 | } |
2367 | ||
2368 | /* | |
2369 | * Build certificate chain. | |
2370 | */ | |
2ece34a9 | 2371 | |
cc754834 | 2372 | ZeroMemory(&chainPara, sizeof(chainPara)); |
2ece34a9 | 2373 | |
cc754834 MS |
2374 | chainPara.cbSize = sizeof(chainPara); |
2375 | chainPara.RequestedUsage.dwType = USAGE_MATCH_TYPE_OR; | |
2376 | chainPara.RequestedUsage.Usage.cUsageIdentifier = cUsages; | |
2377 | chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = rgszUsages; | |
2378 | ||
2ece34a9 | 2379 | if (!CertGetCertificateChain(NULL, cert, NULL, cert->hCertStore, &chainPara, 0, NULL, &chainContext)) |
cc754834 MS |
2380 | { |
2381 | status = GetLastError(); | |
52770f63 | 2382 | |
52770f63 | 2383 | DEBUG_printf(("CertGetCertificateChain returned: %s", http_sspi_strerror(error, sizeof(error), status))); |
2ece34a9 MS |
2384 | |
2385 | LocalFree(commonNameUnicode); | |
2386 | return (status); | |
cc754834 MS |
2387 | } |
2388 | ||
2389 | /* | |
2390 | * Validate certificate chain. | |
321d8d57 | 2391 | */ |
2ece34a9 | 2392 | |
cc754834 MS |
2393 | ZeroMemory(&httpsPolicy, sizeof(HTTPSPolicyCallbackData)); |
2394 | httpsPolicy.cbStruct = sizeof(HTTPSPolicyCallbackData); | |
2395 | httpsPolicy.dwAuthType = AUTHTYPE_SERVER; | |
2396 | httpsPolicy.fdwChecks = dwCertFlags; | |
2ece34a9 | 2397 | httpsPolicy.pwszServerName = commonNameUnicode; |
cc754834 MS |
2398 | |
2399 | memset(&policyPara, 0, sizeof(policyPara)); | |
2400 | policyPara.cbSize = sizeof(policyPara); | |
2401 | policyPara.pvExtraPolicyPara = &httpsPolicy; | |
2402 | ||
2403 | memset(&policyStatus, 0, sizeof(policyStatus)); | |
2404 | policyStatus.cbSize = sizeof(policyStatus); | |
2405 | ||
2ece34a9 | 2406 | if (!CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL, chainContext, &policyPara, &policyStatus)) |
cc754834 MS |
2407 | { |
2408 | status = GetLastError(); | |
52770f63 | 2409 | |
52770f63 | 2410 | DEBUG_printf(("CertVerifyCertificateChainPolicy returned %s", http_sspi_strerror(error, sizeof(error), status))); |
cc754834 | 2411 | } |
2ece34a9 | 2412 | else if (policyStatus.dwError) |
cc754834 | 2413 | status = policyStatus.dwError; |
2ece34a9 MS |
2414 | else |
2415 | status = SEC_E_OK; | |
cc754834 MS |
2416 | |
2417 | if (chainContext) | |
2418 | CertFreeCertificateChain(chainContext); | |
2419 | ||
2ece34a9 MS |
2420 | if (commonNameUnicode) |
2421 | LocalFree(commonNameUnicode); | |
cc754834 MS |
2422 | |
2423 | return (status); | |
2424 | } |