Philip P. Moltmann | 25aee82 | 2016-12-15 12:16:46 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * TLS support code for CUPS on macOS. |
| 3 | * |
| 4 | * Copyright 2007-2016 by Apple Inc. |
| 5 | * Copyright 1997-2007 by Easy Software Products, all rights reserved. |
| 6 | * |
| 7 | * These coded instructions, statements, and computer programs are the |
| 8 | * property of Apple Inc. and are protected by Federal copyright |
| 9 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" |
| 10 | * which should have been included with this file. If this file is |
| 11 | * file is missing or damaged, see the license at "http://www.cups.org/". |
| 12 | * |
| 13 | * This file is subject to the Apple OS-Developed Software exception. |
| 14 | */ |
| 15 | |
| 16 | /**** This file is included from tls.c ****/ |
| 17 | |
| 18 | /* |
| 19 | * Include necessary headers... |
| 20 | */ |
| 21 | |
| 22 | #include <spawn.h> |
| 23 | |
| 24 | extern char **environ; |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * Constants, very secure stuff... |
| 29 | */ |
| 30 | |
| 31 | #define _CUPS_CDSA_PASSWORD "42" /* CUPS keychain password */ |
| 32 | #define _CUPS_CDSA_PASSLEN 2 /* Length of keychain password */ |
| 33 | |
| 34 | |
| 35 | /* |
| 36 | * Local globals... |
| 37 | */ |
| 38 | |
| 39 | static int tls_auto_create = 0; |
| 40 | /* Auto-create self-signed certs? */ |
| 41 | static char *tls_common_name = NULL; |
| 42 | /* Default common name */ |
| 43 | #ifdef HAVE_SECKEYCHAINOPEN |
| 44 | static SecKeychainRef tls_keychain = NULL; |
| 45 | /* Server cert keychain */ |
| 46 | #else |
| 47 | static SecIdentityRef tls_selfsigned = NULL; |
| 48 | /* Temporary self-signed cert */ |
| 49 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 50 | static char *tls_keypath = NULL; |
| 51 | /* Server cert keychain path */ |
| 52 | static _cups_mutex_t tls_mutex = _CUPS_MUTEX_INITIALIZER; |
| 53 | /* Mutex for keychain/certs */ |
| 54 | static int tls_options = -1;/* Options for TLS connections */ |
| 55 | |
| 56 | |
| 57 | /* |
| 58 | * Local functions... |
| 59 | */ |
| 60 | |
| 61 | static CFArrayRef http_cdsa_copy_server(const char *common_name); |
| 62 | static SecCertificateRef http_cdsa_create_credential(http_credential_t *credential); |
| 63 | #ifdef HAVE_SECKEYCHAINOPEN |
| 64 | static const char *http_cdsa_default_path(char *buffer, size_t bufsize); |
| 65 | static SecKeychainRef http_cdsa_open_keychain(const char *path, char *filename, size_t filesize); |
| 66 | static SecKeychainRef http_cdsa_open_system_keychain(void); |
| 67 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 68 | static OSStatus http_cdsa_read(SSLConnectionRef connection, void *data, size_t *dataLength); |
| 69 | static int http_cdsa_set_credentials(http_t *http); |
| 70 | static OSStatus http_cdsa_write(SSLConnectionRef connection, const void *data, size_t *dataLength); |
| 71 | |
| 72 | |
| 73 | /* |
| 74 | * 'cupsMakeServerCredentials()' - Make a self-signed certificate and private key pair. |
| 75 | * |
| 76 | * @since CUPS 2.0/OS 10.10@ |
| 77 | */ |
| 78 | |
| 79 | int /* O - 1 on success, 0 on failure */ |
| 80 | cupsMakeServerCredentials( |
| 81 | const char *path, /* I - Keychain path or @code NULL@ for default */ |
| 82 | const char *common_name, /* I - Common name */ |
| 83 | int num_alt_names, /* I - Number of subject alternate names */ |
| 84 | const char **alt_names, /* I - Subject Alternate Names */ |
| 85 | time_t expiration_date) /* I - Expiration date */ |
| 86 | { |
| 87 | #if defined(HAVE_SECGENERATESELFSIGNEDCERTIFICATE) |
| 88 | int status = 0; /* Return status */ |
| 89 | OSStatus err; /* Error code (if any) */ |
| 90 | CFStringRef cfcommon_name = NULL; |
| 91 | /* CF string for server name */ |
| 92 | SecIdentityRef ident = NULL; /* Identity */ |
| 93 | SecKeyRef publicKey = NULL, |
| 94 | /* Public key */ |
| 95 | privateKey = NULL; |
| 96 | /* Private key */ |
| 97 | SecCertificateRef cert = NULL; /* Self-signed certificate */ |
| 98 | CFMutableDictionaryRef keyParams = NULL; |
| 99 | /* Key generation parameters */ |
| 100 | |
| 101 | |
| 102 | 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)); |
| 103 | |
| 104 | (void)path; |
| 105 | (void)num_alt_names; |
| 106 | (void)alt_names; |
| 107 | (void)expiration_date; |
| 108 | |
| 109 | if (path) |
| 110 | { |
| 111 | DEBUG_puts("1cupsMakeServerCredentials: No keychain support compiled in, returning 0."); |
| 112 | return (0); |
| 113 | } |
| 114 | |
| 115 | if (tls_selfsigned) |
| 116 | { |
| 117 | DEBUG_puts("1cupsMakeServerCredentials: Using existing self-signed cert."); |
| 118 | return (1); |
| 119 | } |
| 120 | |
| 121 | cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8); |
| 122 | if (!cfcommon_name) |
| 123 | { |
| 124 | DEBUG_puts("1cupsMakeServerCredentials: Unable to create CF string of common name."); |
| 125 | goto cleanup; |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * Create a public/private key pair... |
| 130 | */ |
| 131 | |
| 132 | keyParams = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); |
| 133 | if (!keyParams) |
| 134 | { |
| 135 | DEBUG_puts("1cupsMakeServerCredentials: Unable to create key parameters dictionary."); |
| 136 | goto cleanup; |
| 137 | } |
| 138 | |
| 139 | CFDictionaryAddValue(keyParams, kSecAttrKeyType, kSecAttrKeyTypeRSA); |
| 140 | CFDictionaryAddValue(keyParams, kSecAttrKeySizeInBits, CFSTR("2048")); |
| 141 | CFDictionaryAddValue(keyParams, kSecAttrLabel, cfcommon_name); |
| 142 | |
| 143 | err = SecKeyGeneratePair(keyParams, &publicKey, &privateKey); |
| 144 | if (err != noErr) |
| 145 | { |
| 146 | DEBUG_printf(("1cupsMakeServerCredentials: Unable to generate key pair: %d.", (int)err)); |
| 147 | goto cleanup; |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Create a self-signed certificate using the public/private key pair... |
| 152 | */ |
| 153 | |
| 154 | CFIndex usageInt = kSecKeyUsageAll; |
| 155 | CFNumberRef usage = CFNumberCreate(kCFAllocatorDefault, kCFNumberCFIndexType, &usageInt); |
| 156 | CFIndex lenInt = 0; |
| 157 | CFNumberRef len = CFNumberCreate(kCFAllocatorDefault, kCFNumberCFIndexType, &lenInt); |
| 158 | CFTypeRef certKeys[] = { kSecCSRBasicContraintsPathLen, kSecSubjectAltName, kSecCertificateKeyUsage }; |
| 159 | CFTypeRef certValues[] = { len, cfcommon_name, usage }; |
| 160 | CFDictionaryRef certParams = CFDictionaryCreate(kCFAllocatorDefault, certKeys, certValues, sizeof(certKeys) / sizeof(certKeys[0]), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); |
| 161 | CFRelease(usage); |
| 162 | CFRelease(len); |
| 163 | |
| 164 | const void *ca_o[] = { kSecOidOrganization, CFSTR("") }; |
| 165 | const void *ca_cn[] = { kSecOidCommonName, cfcommon_name }; |
| 166 | CFArrayRef ca_o_dn = CFArrayCreate(kCFAllocatorDefault, ca_o, 2, NULL); |
| 167 | CFArrayRef ca_cn_dn = CFArrayCreate(kCFAllocatorDefault, ca_cn, 2, NULL); |
| 168 | const void *ca_dn_array[2]; |
| 169 | |
| 170 | ca_dn_array[0] = CFArrayCreate(kCFAllocatorDefault, (const void **)&ca_o_dn, 1, NULL); |
| 171 | ca_dn_array[1] = CFArrayCreate(kCFAllocatorDefault, (const void **)&ca_cn_dn, 1, NULL); |
| 172 | |
| 173 | CFArrayRef subject = CFArrayCreate(kCFAllocatorDefault, ca_dn_array, 2, NULL); |
| 174 | |
| 175 | cert = SecGenerateSelfSignedCertificate(subject, certParams, publicKey, privateKey); |
| 176 | |
| 177 | CFRelease(subject); |
| 178 | CFRelease(certParams); |
| 179 | |
| 180 | if (!cert) |
| 181 | { |
| 182 | DEBUG_puts("1cupsMakeServerCredentials: Unable to create self-signed certificate."); |
| 183 | goto cleanup; |
| 184 | } |
| 185 | |
| 186 | ident = SecIdentityCreate(kCFAllocatorDefault, cert, privateKey); |
| 187 | |
| 188 | if (ident) |
| 189 | { |
| 190 | _cupsMutexLock(&tls_mutex); |
| 191 | |
| 192 | if (tls_selfsigned) |
| 193 | CFRelease(ident); |
| 194 | else |
| 195 | tls_selfsigned = ident; |
| 196 | |
| 197 | _cupsMutexLock(&tls_mutex); |
| 198 | |
| 199 | # if 0 /* Someday perhaps SecItemCopyMatching will work for identities, at which point */ |
| 200 | CFTypeRef itemKeys[] = { kSecClass, kSecAttrLabel, kSecValueRef }; |
| 201 | CFTypeRef itemValues[] = { kSecClassIdentity, cfcommon_name, ident }; |
| 202 | CFDictionaryRef itemAttrs = CFDictionaryCreate(kCFAllocatorDefault, itemKeys, itemValues, sizeof(itemKeys) / sizeof(itemKeys[0]), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); |
| 203 | |
| 204 | err = SecItemAdd(itemAttrs, NULL); |
| 205 | /* SecItemAdd consumes itemAttrs... */ |
| 206 | |
| 207 | CFRelease(ident); |
| 208 | |
| 209 | if (err != noErr) |
| 210 | { |
| 211 | DEBUG_printf(("1cupsMakeServerCredentials: Unable to add identity to keychain: %d.", (int)err)); |
| 212 | goto cleanup; |
| 213 | } |
| 214 | # endif /* 0 */ |
| 215 | |
| 216 | status = 1; |
| 217 | } |
| 218 | else |
| 219 | DEBUG_puts("1cupsMakeServerCredentials: Unable to create identity from cert and keys."); |
| 220 | |
| 221 | /* |
| 222 | * Cleanup and return... |
| 223 | */ |
| 224 | |
| 225 | cleanup: |
| 226 | |
| 227 | if (cfcommon_name) |
| 228 | CFRelease(cfcommon_name); |
| 229 | |
| 230 | if (keyParams) |
| 231 | CFRelease(keyParams); |
| 232 | |
| 233 | if (cert) |
| 234 | CFRelease(cert); |
| 235 | |
| 236 | if (publicKey) |
| 237 | CFRelease(publicKey); |
| 238 | |
| 239 | if (privateKey) |
| 240 | CFRelease(privateKey); |
| 241 | |
| 242 | DEBUG_printf(("1cupsMakeServerCredentials: Returning %d.", status)); |
| 243 | |
| 244 | return (status); |
| 245 | |
| 246 | #else /* !HAVE_SECGENERATESELFSIGNEDCERTIFICATE */ |
| 247 | int pid, /* Process ID of command */ |
| 248 | status, /* Status of command */ |
| 249 | i; /* Looping var */ |
| 250 | char command[1024], /* Command */ |
| 251 | *argv[5], /* Command-line arguments */ |
| 252 | *envp[1000], /* Environment variables */ |
| 253 | days[32], /* CERTTOOL_EXPIRATION_DAYS env var */ |
| 254 | keychain[1024], /* Keychain argument */ |
| 255 | infofile[1024], /* Type-in information for cert */ |
| 256 | filename[1024]; /* Default keychain path */ |
| 257 | cups_file_t *fp; /* Seed/info file */ |
| 258 | |
| 259 | |
| 260 | DEBUG_printf(("cupsMakeServerCredentials(path=\"%s\", common_name=\"%s\", num_alt_names=%d, alt_names=%p, expiration_date=%d)", path, common_name, num_alt_names, (void *)alt_names, (int)expiration_date)); |
| 261 | |
| 262 | (void)num_alt_names; |
| 263 | (void)alt_names; |
| 264 | |
| 265 | if (!path) |
| 266 | path = http_cdsa_default_path(filename, sizeof(filename)); |
| 267 | |
| 268 | /* |
| 269 | * Run the "certtool" command to generate a self-signed certificate... |
| 270 | */ |
| 271 | |
| 272 | if (!cupsFileFind("certtool", getenv("PATH"), 1, command, sizeof(command))) |
| 273 | return (-1); |
| 274 | |
| 275 | /* |
| 276 | * Create a file with the certificate information fields... |
| 277 | * |
| 278 | * Note: This assumes that the default questions are asked by the certtool |
| 279 | * command... |
| 280 | */ |
| 281 | |
| 282 | if ((fp = cupsTempFile2(infofile, sizeof(infofile))) == NULL) |
| 283 | return (-1); |
| 284 | |
| 285 | cupsFilePrintf(fp, |
| 286 | "CUPS Self-Signed Certificate\n" |
| 287 | /* Enter key and certificate label */ |
| 288 | "r\n" /* Generate RSA key pair */ |
| 289 | "2048\n" /* 2048 bit encryption key */ |
| 290 | "y\n" /* OK (y = yes) */ |
| 291 | "b\n" /* Usage (b=signing/encryption) */ |
| 292 | "2\n" /* Sign with SHA256 */ |
| 293 | "y\n" /* OK (y = yes) */ |
| 294 | "%s\n" /* Common name */ |
| 295 | "\n" /* Country (default) */ |
| 296 | "\n" /* Organization (default) */ |
| 297 | "\n" /* Organizational unit (default) */ |
| 298 | "\n" /* State/Province (default) */ |
| 299 | "\n" /* Email address */ |
| 300 | "y\n", /* OK (y = yes) */ |
| 301 | common_name); |
| 302 | cupsFileClose(fp); |
| 303 | |
| 304 | snprintf(keychain, sizeof(keychain), "k=%s", path); |
| 305 | |
| 306 | argv[0] = "certtool"; |
| 307 | argv[1] = "c"; |
| 308 | argv[2] = keychain; |
| 309 | argv[3] = NULL; |
| 310 | |
| 311 | snprintf(days, sizeof(days), "CERTTOOL_EXPIRATION_DAYS=%d", (int)((expiration_date - time(NULL) + 86399) / 86400)); |
| 312 | envp[0] = days; |
| 313 | for (i = 0; i < (int)(sizeof(envp) / sizeof(envp[0]) - 2) && environ[i]; i ++) |
| 314 | envp[i + 1] = environ[i]; |
| 315 | envp[i] = NULL; |
| 316 | |
| 317 | posix_spawn_file_actions_t actions; /* File actions */ |
| 318 | |
| 319 | posix_spawn_file_actions_init(&actions); |
| 320 | posix_spawn_file_actions_addclose(&actions, 0); |
| 321 | posix_spawn_file_actions_addopen(&actions, 0, infofile, O_RDONLY, 0); |
| 322 | posix_spawn_file_actions_addclose(&actions, 1); |
| 323 | posix_spawn_file_actions_addopen(&actions, 1, "/dev/null", O_WRONLY, 0); |
| 324 | posix_spawn_file_actions_addclose(&actions, 2); |
| 325 | posix_spawn_file_actions_addopen(&actions, 2, "/dev/null", O_WRONLY, 0); |
| 326 | |
| 327 | if (posix_spawn(&pid, command, &actions, NULL, argv, envp)) |
| 328 | { |
| 329 | unlink(infofile); |
| 330 | return (-1); |
| 331 | } |
| 332 | |
| 333 | posix_spawn_file_actions_destroy(&actions); |
| 334 | |
| 335 | unlink(infofile); |
| 336 | |
| 337 | while (waitpid(pid, &status, 0) < 0) |
| 338 | if (errno != EINTR) |
| 339 | { |
| 340 | status = -1; |
| 341 | break; |
| 342 | } |
| 343 | |
| 344 | return (!status); |
| 345 | #endif /* HAVE_SECGENERATESELFSIGNEDCERTIFICATE && HAVE_SECKEYCHAINOPEN */ |
| 346 | } |
| 347 | |
| 348 | |
| 349 | /* |
| 350 | * 'cupsSetServerCredentials()' - Set the default server credentials. |
| 351 | * |
| 352 | * Note: The server credentials are used by all threads in the running process. |
| 353 | * This function is threadsafe. |
| 354 | * |
| 355 | * @since CUPS 2.0/macOS 10.10@ |
| 356 | */ |
| 357 | |
| 358 | int /* O - 1 on success, 0 on failure */ |
| 359 | cupsSetServerCredentials( |
| 360 | const char *path, /* I - Keychain path or @code NULL@ for default */ |
| 361 | const char *common_name, /* I - Default common name for server */ |
| 362 | int auto_create) /* I - 1 = automatically create self-signed certificates */ |
| 363 | { |
| 364 | DEBUG_printf(("cupsSetServerCredentials(path=\"%s\", common_name=\"%s\", auto_create=%d)", path, common_name, auto_create)); |
| 365 | |
| 366 | #ifdef HAVE_SECKEYCHAINOPEN |
| 367 | char filename[1024]; /* Keychain filename */ |
| 368 | SecKeychainRef keychain = http_cdsa_open_keychain(path, filename, sizeof(filename)); |
| 369 | |
| 370 | if (!keychain) |
| 371 | { |
| 372 | DEBUG_puts("1cupsSetServerCredentials: Unable to open keychain."); |
| 373 | return (0); |
| 374 | } |
| 375 | |
| 376 | _cupsMutexLock(&tls_mutex); |
| 377 | |
| 378 | /* |
| 379 | * Close any keychain that is currently open... |
| 380 | */ |
| 381 | |
| 382 | if (tls_keychain) |
| 383 | CFRelease(tls_keychain); |
| 384 | |
| 385 | if (tls_keypath) |
| 386 | _cupsStrFree(tls_keypath); |
| 387 | |
| 388 | if (tls_common_name) |
| 389 | _cupsStrFree(tls_common_name); |
| 390 | |
| 391 | /* |
| 392 | * Save the new keychain... |
| 393 | */ |
| 394 | |
| 395 | tls_keychain = keychain; |
| 396 | tls_keypath = _cupsStrAlloc(filename); |
| 397 | tls_auto_create = auto_create; |
| 398 | tls_common_name = _cupsStrAlloc(common_name); |
| 399 | |
| 400 | _cupsMutexUnlock(&tls_mutex); |
| 401 | |
| 402 | DEBUG_puts("1cupsSetServerCredentials: Opened keychain, returning 1."); |
| 403 | return (1); |
| 404 | |
| 405 | #else |
| 406 | if (path) |
| 407 | { |
| 408 | DEBUG_puts("1cupsSetServerCredentials: No keychain support compiled in, returning 0."); |
| 409 | return (0); |
| 410 | } |
| 411 | |
| 412 | tls_auto_create = auto_create; |
| 413 | tls_common_name = _cupsStrAlloc(common_name); |
| 414 | |
| 415 | return (1); |
| 416 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 417 | } |
| 418 | |
| 419 | |
| 420 | /* |
| 421 | * 'httpCopyCredentials()' - Copy the credentials associated with the peer in |
| 422 | * an encrypted connection. |
| 423 | * |
| 424 | * @since CUPS 1.5/macOS 10.7@ |
| 425 | */ |
| 426 | |
| 427 | int /* O - Status of call (0 = success) */ |
| 428 | httpCopyCredentials( |
| 429 | http_t *http, /* I - Connection to server */ |
| 430 | cups_array_t **credentials) /* O - Array of credentials */ |
| 431 | { |
| 432 | OSStatus error; /* Error code */ |
| 433 | SecTrustRef peerTrust; /* Peer trust reference */ |
| 434 | CFIndex count; /* Number of credentials */ |
| 435 | SecCertificateRef secCert; /* Certificate reference */ |
| 436 | CFDataRef data; /* Certificate data */ |
| 437 | int i; /* Looping var */ |
| 438 | |
| 439 | |
| 440 | DEBUG_printf(("httpCopyCredentials(http=%p, credentials=%p)", (void *)http, (void *)credentials)); |
| 441 | |
| 442 | if (credentials) |
| 443 | *credentials = NULL; |
| 444 | |
| 445 | if (!http || !http->tls || !credentials) |
| 446 | return (-1); |
| 447 | |
| 448 | if (!(error = SSLCopyPeerTrust(http->tls, &peerTrust)) && peerTrust) |
| 449 | { |
| 450 | DEBUG_printf(("2httpCopyCredentials: Peer provided %d certificates.", (int)SecTrustGetCertificateCount(peerTrust))); |
| 451 | |
| 452 | if ((*credentials = cupsArrayNew(NULL, NULL)) != NULL) |
| 453 | { |
| 454 | count = SecTrustGetCertificateCount(peerTrust); |
| 455 | |
| 456 | for (i = 0; i < count; i ++) |
| 457 | { |
| 458 | secCert = SecTrustGetCertificateAtIndex(peerTrust, i); |
| 459 | |
| 460 | #ifdef DEBUG |
| 461 | CFStringRef cf_name = SecCertificateCopySubjectSummary(secCert); |
| 462 | char name[1024]; |
| 463 | if (cf_name) |
| 464 | CFStringGetCString(cf_name, name, sizeof(name), kCFStringEncodingUTF8); |
| 465 | else |
| 466 | strlcpy(name, "unknown", sizeof(name)); |
| 467 | |
| 468 | DEBUG_printf(("2httpCopyCredentials: Certificate %d name is \"%s\".", i, name)); |
| 469 | #endif /* DEBUG */ |
| 470 | |
| 471 | if ((data = SecCertificateCopyData(secCert)) != NULL) |
| 472 | { |
| 473 | DEBUG_printf(("2httpCopyCredentials: Adding %d byte certificate blob.", (int)CFDataGetLength(data))); |
| 474 | |
| 475 | httpAddCredential(*credentials, CFDataGetBytePtr(data), (size_t)CFDataGetLength(data)); |
| 476 | CFRelease(data); |
| 477 | } |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | CFRelease(peerTrust); |
| 482 | } |
| 483 | |
| 484 | return (error); |
| 485 | } |
| 486 | |
| 487 | |
| 488 | /* |
| 489 | * '_httpCreateCredentials()' - Create credentials in the internal format. |
| 490 | */ |
| 491 | |
| 492 | http_tls_credentials_t /* O - Internal credentials */ |
| 493 | _httpCreateCredentials( |
| 494 | cups_array_t *credentials) /* I - Array of credentials */ |
| 495 | { |
| 496 | CFMutableArrayRef peerCerts; /* Peer credentials reference */ |
| 497 | SecCertificateRef secCert; /* Certificate reference */ |
| 498 | http_credential_t *credential; /* Credential data */ |
| 499 | |
| 500 | |
| 501 | if (!credentials) |
| 502 | return (NULL); |
| 503 | |
| 504 | if ((peerCerts = CFArrayCreateMutable(kCFAllocatorDefault, |
| 505 | cupsArrayCount(credentials), |
| 506 | &kCFTypeArrayCallBacks)) == NULL) |
| 507 | return (NULL); |
| 508 | |
| 509 | for (credential = (http_credential_t *)cupsArrayFirst(credentials); |
| 510 | credential; |
| 511 | credential = (http_credential_t *)cupsArrayNext(credentials)) |
| 512 | { |
| 513 | if ((secCert = http_cdsa_create_credential(credential)) != NULL) |
| 514 | { |
| 515 | CFArrayAppendValue(peerCerts, secCert); |
| 516 | CFRelease(secCert); |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | return (peerCerts); |
| 521 | } |
| 522 | |
| 523 | |
| 524 | /* |
| 525 | * 'httpCredentialsAreValidForName()' - Return whether the credentials are valid for the given name. |
| 526 | * |
| 527 | * @since CUPS 2.0/macOS 10.10@ |
| 528 | */ |
| 529 | |
| 530 | int /* O - 1 if valid, 0 otherwise */ |
| 531 | httpCredentialsAreValidForName( |
| 532 | cups_array_t *credentials, /* I - Credentials */ |
| 533 | const char *common_name) /* I - Name to check */ |
| 534 | { |
| 535 | SecCertificateRef secCert; /* Certificate reference */ |
| 536 | CFStringRef cfcert_name = NULL; |
| 537 | /* Certificate's common name (CF string) */ |
| 538 | char cert_name[256]; /* Certificate's common name (C string) */ |
| 539 | int valid = 1; /* Valid name? */ |
| 540 | |
| 541 | |
| 542 | if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL) |
| 543 | return (0); |
| 544 | |
| 545 | /* |
| 546 | * Compare the common names... |
| 547 | */ |
| 548 | |
| 549 | if ((cfcert_name = SecCertificateCopySubjectSummary(secCert)) == NULL) |
| 550 | { |
| 551 | /* |
| 552 | * Can't get common name, cannot be valid... |
| 553 | */ |
| 554 | |
| 555 | valid = 0; |
| 556 | } |
| 557 | else if (CFStringGetCString(cfcert_name, cert_name, sizeof(cert_name), kCFStringEncodingUTF8) && |
| 558 | _cups_strcasecmp(common_name, cert_name)) |
| 559 | { |
| 560 | /* |
| 561 | * Not an exact match for the common name, check for wildcard certs... |
| 562 | */ |
| 563 | |
| 564 | const char *domain = strchr(common_name, '.'); |
| 565 | /* Domain in common name */ |
| 566 | |
| 567 | if (strncmp(cert_name, "*.", 2) || !domain || _cups_strcasecmp(domain, cert_name + 1)) |
| 568 | { |
| 569 | /* |
| 570 | * Not a wildcard match. |
| 571 | */ |
| 572 | |
| 573 | /* TODO: Check subject alternate names */ |
| 574 | valid = 0; |
| 575 | } |
| 576 | } |
| 577 | |
| 578 | if (cfcert_name) |
| 579 | CFRelease(cfcert_name); |
| 580 | |
| 581 | CFRelease(secCert); |
| 582 | |
| 583 | return (valid); |
| 584 | } |
| 585 | |
| 586 | |
| 587 | /* |
| 588 | * 'httpCredentialsGetTrust()' - Return the trust of credentials. |
| 589 | * |
| 590 | * @since CUPS 2.0/macOS 10.10@ |
| 591 | */ |
| 592 | |
| 593 | http_trust_t /* O - Level of trust */ |
| 594 | httpCredentialsGetTrust( |
| 595 | cups_array_t *credentials, /* I - Credentials */ |
| 596 | const char *common_name) /* I - Common name for trust lookup */ |
| 597 | { |
| 598 | SecCertificateRef secCert; /* Certificate reference */ |
| 599 | http_trust_t trust = HTTP_TRUST_OK; |
| 600 | /* Trusted? */ |
| 601 | cups_array_t *tcreds = NULL; /* Trusted credentials */ |
| 602 | _cups_globals_t *cg = _cupsGlobals(); |
| 603 | /* Per-thread globals */ |
| 604 | |
| 605 | |
| 606 | if (!common_name) |
| 607 | { |
| 608 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No common name specified."), 1); |
| 609 | return (HTTP_TRUST_UNKNOWN); |
| 610 | } |
| 611 | |
| 612 | if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL) |
| 613 | { |
| 614 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create credentials from array."), 1); |
| 615 | return (HTTP_TRUST_UNKNOWN); |
| 616 | } |
| 617 | |
| 618 | if (cg->any_root < 0) |
| 619 | _cupsSetDefaults(); |
| 620 | |
| 621 | /* |
| 622 | * Look this common name up in the default keychains... |
| 623 | */ |
| 624 | |
| 625 | httpLoadCredentials(NULL, &tcreds, common_name); |
| 626 | |
| 627 | if (tcreds) |
| 628 | { |
| 629 | char credentials_str[1024], /* String for incoming credentials */ |
| 630 | tcreds_str[1024]; /* String for saved credentials */ |
| 631 | |
| 632 | httpCredentialsString(credentials, credentials_str, sizeof(credentials_str)); |
| 633 | httpCredentialsString(tcreds, tcreds_str, sizeof(tcreds_str)); |
| 634 | |
| 635 | if (strcmp(credentials_str, tcreds_str)) |
| 636 | { |
| 637 | /* |
| 638 | * Credentials don't match, let's look at the expiration date of the new |
| 639 | * credentials and allow if the new ones have a later expiration... |
| 640 | */ |
| 641 | |
| 642 | if (!cg->trust_first) |
| 643 | { |
| 644 | /* |
| 645 | * Do not trust certificates on first use... |
| 646 | */ |
| 647 | |
| 648 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Trust on first use is disabled."), 1); |
| 649 | |
| 650 | trust = HTTP_TRUST_INVALID; |
| 651 | } |
| 652 | else if (httpCredentialsGetExpiration(credentials) <= httpCredentialsGetExpiration(tcreds)) |
| 653 | { |
| 654 | /* |
| 655 | * The new credentials are not newly issued... |
| 656 | */ |
| 657 | |
| 658 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("New credentials are older than stored credentials."), 1); |
| 659 | |
| 660 | trust = HTTP_TRUST_INVALID; |
| 661 | } |
| 662 | else if (!httpCredentialsAreValidForName(credentials, common_name)) |
| 663 | { |
| 664 | /* |
| 665 | * The common name does not match the issued certificate... |
| 666 | */ |
| 667 | |
| 668 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("New credentials are not valid for name."), 1); |
| 669 | |
| 670 | trust = HTTP_TRUST_INVALID; |
| 671 | } |
| 672 | else if (httpCredentialsGetExpiration(tcreds) < time(NULL)) |
| 673 | { |
| 674 | /* |
| 675 | * Save the renewed credentials... |
| 676 | */ |
| 677 | |
| 678 | trust = HTTP_TRUST_RENEWED; |
| 679 | |
| 680 | httpSaveCredentials(NULL, credentials, common_name); |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | httpFreeCredentials(tcreds); |
| 685 | } |
| 686 | else if (cg->validate_certs && !httpCredentialsAreValidForName(credentials, common_name)) |
| 687 | { |
| 688 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("No stored credentials, not valid for name."), 1); |
| 689 | trust = HTTP_TRUST_INVALID; |
| 690 | } |
| 691 | else if (!cg->trust_first) |
| 692 | { |
| 693 | /* |
| 694 | * See if we have a site CA certificate we can compare... |
| 695 | */ |
| 696 | |
| 697 | if (!httpLoadCredentials(NULL, &tcreds, "site")) |
| 698 | { |
| 699 | if (cupsArrayCount(credentials) != (cupsArrayCount(tcreds) + 1)) |
| 700 | { |
| 701 | /* |
| 702 | * Certificate isn't directly generated from the CA cert... |
| 703 | */ |
| 704 | |
| 705 | trust = HTTP_TRUST_INVALID; |
| 706 | } |
| 707 | else |
| 708 | { |
| 709 | /* |
| 710 | * Do a tail comparison of the two certificates... |
| 711 | */ |
| 712 | |
| 713 | http_credential_t *a, *b; /* Certificates */ |
| 714 | |
| 715 | for (a = (http_credential_t *)cupsArrayFirst(tcreds), b = (http_credential_t *)cupsArrayIndex(credentials, 1); |
| 716 | a && b; |
| 717 | a = (http_credential_t *)cupsArrayNext(tcreds), b = (http_credential_t *)cupsArrayNext(credentials)) |
| 718 | if (a->datalen != b->datalen || memcmp(a->data, b->data, a->datalen)) |
| 719 | break; |
| 720 | |
| 721 | if (a || b) |
| 722 | trust = HTTP_TRUST_INVALID; |
| 723 | } |
| 724 | |
| 725 | if (trust != HTTP_TRUST_OK) |
| 726 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Credentials do not validate against site CA certificate."), 1); |
| 727 | } |
| 728 | else |
| 729 | { |
| 730 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Trust on first use is disabled."), 1); |
| 731 | trust = HTTP_TRUST_INVALID; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | if (trust == HTTP_TRUST_OK && !cg->expired_certs && !SecCertificateIsValid(secCert, CFAbsoluteTimeGetCurrent())) |
| 736 | { |
| 737 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Credentials have expired."), 1); |
| 738 | trust = HTTP_TRUST_EXPIRED; |
| 739 | } |
| 740 | |
| 741 | if (trust == HTTP_TRUST_OK && !cg->any_root && cupsArrayCount(credentials) == 1) |
| 742 | { |
| 743 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Self-signed credentials are blocked."), 1); |
| 744 | trust = HTTP_TRUST_INVALID; |
| 745 | } |
| 746 | |
| 747 | CFRelease(secCert); |
| 748 | |
| 749 | return (trust); |
| 750 | } |
| 751 | |
| 752 | |
| 753 | /* |
| 754 | * 'httpCredentialsGetExpiration()' - Return the expiration date of the credentials. |
| 755 | * |
| 756 | * @since CUPS 2.0/macOS 10.10@ |
| 757 | */ |
| 758 | |
| 759 | time_t /* O - Expiration date of credentials */ |
| 760 | httpCredentialsGetExpiration( |
| 761 | cups_array_t *credentials) /* I - Credentials */ |
| 762 | { |
| 763 | SecCertificateRef secCert; /* Certificate reference */ |
| 764 | time_t expiration; /* Expiration date */ |
| 765 | |
| 766 | |
| 767 | if ((secCert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL) |
| 768 | return (0); |
| 769 | |
| 770 | expiration = (time_t)(SecCertificateNotValidAfter(secCert) + kCFAbsoluteTimeIntervalSince1970); |
| 771 | |
| 772 | CFRelease(secCert); |
| 773 | |
| 774 | return (expiration); |
| 775 | } |
| 776 | |
| 777 | |
| 778 | /* |
| 779 | * 'httpCredentialsString()' - Return a string representing the credentials. |
| 780 | * |
| 781 | * @since CUPS 2.0/macOS 10.10@ |
| 782 | */ |
| 783 | |
| 784 | size_t /* O - Total size of credentials string */ |
| 785 | httpCredentialsString( |
| 786 | cups_array_t *credentials, /* I - Credentials */ |
| 787 | char *buffer, /* I - Buffer or @code NULL@ */ |
| 788 | size_t bufsize) /* I - Size of buffer */ |
| 789 | { |
| 790 | http_credential_t *first; /* First certificate */ |
| 791 | SecCertificateRef secCert; /* Certificate reference */ |
| 792 | |
| 793 | |
| 794 | DEBUG_printf(("httpCredentialsString(credentials=%p, buffer=%p, bufsize=" CUPS_LLFMT ")", (void *)credentials, (void *)buffer, CUPS_LLCAST bufsize)); |
| 795 | |
| 796 | if (!buffer) |
| 797 | return (0); |
| 798 | |
| 799 | if (buffer && bufsize > 0) |
| 800 | *buffer = '\0'; |
| 801 | |
| 802 | if ((first = (http_credential_t *)cupsArrayFirst(credentials)) != NULL && |
| 803 | (secCert = http_cdsa_create_credential(first)) != NULL) |
| 804 | { |
| 805 | CFStringRef cf_name; /* CF common name string */ |
| 806 | char name[256]; /* Common name associated with cert */ |
| 807 | time_t expiration; /* Expiration date of cert */ |
| 808 | _cups_md5_state_t md5_state; /* MD5 state */ |
| 809 | unsigned char md5_digest[16]; /* MD5 result */ |
| 810 | |
| 811 | if ((cf_name = SecCertificateCopySubjectSummary(secCert)) != NULL) |
| 812 | { |
| 813 | CFStringGetCString(cf_name, name, (CFIndex)sizeof(name), kCFStringEncodingUTF8); |
| 814 | CFRelease(cf_name); |
| 815 | } |
| 816 | else |
| 817 | strlcpy(name, "unknown", sizeof(name)); |
| 818 | |
| 819 | expiration = (time_t)(SecCertificateNotValidAfter(secCert) + kCFAbsoluteTimeIntervalSince1970); |
| 820 | |
| 821 | _cupsMD5Init(&md5_state); |
| 822 | _cupsMD5Append(&md5_state, first->data, (int)first->datalen); |
| 823 | _cupsMD5Finish(&md5_state, md5_digest); |
| 824 | |
| 825 | snprintf(buffer, bufsize, "%s / %s / %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", 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]); |
| 826 | |
| 827 | CFRelease(secCert); |
| 828 | } |
| 829 | |
| 830 | DEBUG_printf(("1httpCredentialsString: Returning \"%s\".", buffer)); |
| 831 | |
| 832 | return (strlen(buffer)); |
| 833 | } |
| 834 | |
| 835 | |
| 836 | /* |
| 837 | * '_httpFreeCredentials()' - Free internal credentials. |
| 838 | */ |
| 839 | |
| 840 | void |
| 841 | _httpFreeCredentials( |
| 842 | http_tls_credentials_t credentials) /* I - Internal credentials */ |
| 843 | { |
| 844 | if (!credentials) |
| 845 | return; |
| 846 | |
| 847 | CFRelease(credentials); |
| 848 | } |
| 849 | |
| 850 | |
| 851 | /* |
| 852 | * 'httpLoadCredentials()' - Load X.509 credentials from a keychain file. |
| 853 | * |
| 854 | * @since CUPS 2.0/OS 10.10@ |
| 855 | */ |
| 856 | |
| 857 | int /* O - 0 on success, -1 on error */ |
| 858 | httpLoadCredentials( |
| 859 | const char *path, /* I - Keychain path or @code NULL@ for default */ |
| 860 | cups_array_t **credentials, /* IO - Credentials */ |
| 861 | const char *common_name) /* I - Common name for credentials */ |
| 862 | { |
| 863 | OSStatus err; /* Error info */ |
| 864 | #ifdef HAVE_SECKEYCHAINOPEN |
| 865 | char filename[1024]; /* Filename for keychain */ |
| 866 | SecKeychainRef keychain = NULL,/* Keychain reference */ |
| 867 | syschain = NULL;/* System keychain */ |
| 868 | CFArrayRef list; /* Keychain list */ |
| 869 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 870 | SecCertificateRef cert = NULL; /* Certificate */ |
| 871 | CFDataRef data; /* Certificate data */ |
| 872 | SecPolicyRef policy = NULL; /* Policy ref */ |
| 873 | CFStringRef cfcommon_name = NULL; |
| 874 | /* Server name */ |
| 875 | CFMutableDictionaryRef query = NULL; /* Query qualifiers */ |
| 876 | |
| 877 | |
| 878 | DEBUG_printf(("httpLoadCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, (void *)credentials, common_name)); |
| 879 | |
| 880 | if (!credentials) |
| 881 | return (-1); |
| 882 | |
| 883 | *credentials = NULL; |
| 884 | |
| 885 | #ifdef HAVE_SECKEYCHAINOPEN |
| 886 | keychain = http_cdsa_open_keychain(path, filename, sizeof(filename)); |
| 887 | |
| 888 | if (!keychain) |
| 889 | goto cleanup; |
| 890 | |
| 891 | syschain = http_cdsa_open_system_keychain(); |
| 892 | |
| 893 | #else |
| 894 | if (path) |
| 895 | return (-1); |
| 896 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 897 | |
| 898 | cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8); |
| 899 | |
| 900 | policy = SecPolicyCreateSSL(1, cfcommon_name); |
| 901 | |
| 902 | if (cfcommon_name) |
| 903 | CFRelease(cfcommon_name); |
| 904 | |
| 905 | if (!policy) |
| 906 | goto cleanup; |
| 907 | |
| 908 | if (!(query = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks))) |
| 909 | goto cleanup; |
| 910 | |
| 911 | CFDictionaryAddValue(query, kSecClass, kSecClassCertificate); |
| 912 | CFDictionaryAddValue(query, kSecMatchPolicy, policy); |
| 913 | CFDictionaryAddValue(query, kSecReturnRef, kCFBooleanTrue); |
| 914 | CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitOne); |
| 915 | |
| 916 | #ifdef HAVE_SECKEYCHAINOPEN |
| 917 | if (syschain) |
| 918 | { |
| 919 | const void *values[2] = { syschain, keychain }; |
| 920 | |
| 921 | list = CFArrayCreate(kCFAllocatorDefault, (const void **)values, 2, &kCFTypeArrayCallBacks); |
| 922 | } |
| 923 | else |
| 924 | list = CFArrayCreate(kCFAllocatorDefault, (const void **)&keychain, 1, &kCFTypeArrayCallBacks); |
| 925 | CFDictionaryAddValue(query, kSecMatchSearchList, list); |
| 926 | CFRelease(list); |
| 927 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 928 | |
| 929 | err = SecItemCopyMatching(query, (CFTypeRef *)&cert); |
| 930 | |
| 931 | if (err) |
| 932 | goto cleanup; |
| 933 | |
| 934 | if (CFGetTypeID(cert) != SecCertificateGetTypeID()) |
| 935 | goto cleanup; |
| 936 | |
| 937 | if ((data = SecCertificateCopyData(cert)) != NULL) |
| 938 | { |
| 939 | DEBUG_printf(("1httpLoadCredentials: Adding %d byte certificate blob.", (int)CFDataGetLength(data))); |
| 940 | |
| 941 | *credentials = cupsArrayNew(NULL, NULL); |
| 942 | httpAddCredential(*credentials, CFDataGetBytePtr(data), (size_t)CFDataGetLength(data)); |
| 943 | CFRelease(data); |
| 944 | } |
| 945 | |
| 946 | cleanup : |
| 947 | |
| 948 | #ifdef HAVE_SECKEYCHAINOPEN |
| 949 | if (keychain) |
| 950 | CFRelease(keychain); |
| 951 | |
| 952 | if (syschain) |
| 953 | CFRelease(syschain); |
| 954 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 955 | if (cert) |
| 956 | CFRelease(cert); |
| 957 | if (policy) |
| 958 | CFRelease(policy); |
| 959 | if (query) |
| 960 | CFRelease(query); |
| 961 | |
| 962 | DEBUG_printf(("1httpLoadCredentials: Returning %d.", *credentials ? 0 : -1)); |
| 963 | |
| 964 | return (*credentials ? 0 : -1); |
| 965 | } |
| 966 | |
| 967 | |
| 968 | /* |
| 969 | * 'httpSaveCredentials()' - Save X.509 credentials to a keychain file. |
| 970 | * |
| 971 | * @since CUPS 2.0/OS 10.10@ |
| 972 | */ |
| 973 | |
| 974 | int /* O - -1 on error, 0 on success */ |
| 975 | httpSaveCredentials( |
| 976 | const char *path, /* I - Keychain path or @code NULL@ for default */ |
| 977 | cups_array_t *credentials, /* I - Credentials */ |
| 978 | const char *common_name) /* I - Common name for credentials */ |
| 979 | { |
| 980 | int ret = -1; /* Return value */ |
| 981 | OSStatus err; /* Error info */ |
| 982 | #ifdef HAVE_SECKEYCHAINOPEN |
| 983 | char filename[1024]; /* Filename for keychain */ |
| 984 | SecKeychainRef keychain = NULL;/* Keychain reference */ |
| 985 | CFArrayRef list; /* Keychain list */ |
| 986 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 987 | SecCertificateRef cert = NULL; /* Certificate */ |
| 988 | CFMutableDictionaryRef attrs = NULL; /* Attributes for add */ |
| 989 | |
| 990 | |
| 991 | DEBUG_printf(("httpSaveCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path, (void *)credentials, common_name)); |
| 992 | if (!credentials) |
| 993 | goto cleanup; |
| 994 | |
| 995 | if (!httpCredentialsAreValidForName(credentials, common_name)) |
| 996 | { |
| 997 | DEBUG_puts("1httpSaveCredentials: Common name does not match."); |
| 998 | return (-1); |
| 999 | } |
| 1000 | |
| 1001 | if ((cert = http_cdsa_create_credential((http_credential_t *)cupsArrayFirst(credentials))) == NULL) |
| 1002 | { |
| 1003 | DEBUG_puts("1httpSaveCredentials: Unable to create certificate."); |
| 1004 | goto cleanup; |
| 1005 | } |
| 1006 | |
| 1007 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1008 | keychain = http_cdsa_open_keychain(path, filename, sizeof(filename)); |
| 1009 | |
| 1010 | if (!keychain) |
| 1011 | goto cleanup; |
| 1012 | |
| 1013 | #else |
| 1014 | if (path) |
| 1015 | return (-1); |
| 1016 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 1017 | |
| 1018 | if ((attrs = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks)) == NULL) |
| 1019 | { |
| 1020 | DEBUG_puts("1httpSaveCredentials: Unable to create dictionary."); |
| 1021 | goto cleanup; |
| 1022 | } |
| 1023 | |
| 1024 | CFDictionaryAddValue(attrs, kSecClass, kSecClassCertificate); |
| 1025 | CFDictionaryAddValue(attrs, kSecValueRef, cert); |
| 1026 | |
| 1027 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1028 | if ((list = CFArrayCreate(kCFAllocatorDefault, (const void **)&keychain, 1, &kCFTypeArrayCallBacks)) == NULL) |
| 1029 | { |
| 1030 | DEBUG_puts("1httpSaveCredentials: Unable to create list of keychains."); |
| 1031 | goto cleanup; |
| 1032 | } |
| 1033 | CFDictionaryAddValue(attrs, kSecMatchSearchList, list); |
| 1034 | CFRelease(list); |
| 1035 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 1036 | |
| 1037 | /* Note: SecItemAdd consumes "attrs"... */ |
| 1038 | err = SecItemAdd(attrs, NULL); |
| 1039 | DEBUG_printf(("1httpSaveCredentials: SecItemAdd returned %d.", (int)err)); |
| 1040 | |
| 1041 | cleanup : |
| 1042 | |
| 1043 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1044 | if (keychain) |
| 1045 | CFRelease(keychain); |
| 1046 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 1047 | if (cert) |
| 1048 | CFRelease(cert); |
| 1049 | |
| 1050 | DEBUG_printf(("1httpSaveCredentials: Returning %d.", ret)); |
| 1051 | |
| 1052 | return (ret); |
| 1053 | } |
| 1054 | |
| 1055 | |
| 1056 | /* |
| 1057 | * '_httpTLSInitialize()' - Initialize the TLS stack. |
| 1058 | */ |
| 1059 | |
| 1060 | void |
| 1061 | _httpTLSInitialize(void) |
| 1062 | { |
| 1063 | /* |
| 1064 | * Nothing to do... |
| 1065 | */ |
| 1066 | } |
| 1067 | |
| 1068 | |
| 1069 | /* |
| 1070 | * '_httpTLSPending()' - Return the number of pending TLS-encrypted bytes. |
| 1071 | */ |
| 1072 | |
| 1073 | size_t |
| 1074 | _httpTLSPending(http_t *http) /* I - HTTP connection */ |
| 1075 | { |
| 1076 | size_t bytes; /* Bytes that are available */ |
| 1077 | |
| 1078 | |
| 1079 | if (!SSLGetBufferedReadSize(http->tls, &bytes)) |
| 1080 | return (bytes); |
| 1081 | |
| 1082 | return (0); |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | /* |
| 1087 | * '_httpTLSRead()' - Read from a SSL/TLS connection. |
| 1088 | */ |
| 1089 | |
| 1090 | int /* O - Bytes read */ |
| 1091 | _httpTLSRead(http_t *http, /* I - HTTP connection */ |
| 1092 | char *buf, /* I - Buffer to store data */ |
| 1093 | int len) /* I - Length of buffer */ |
| 1094 | { |
| 1095 | int result; /* Return value */ |
| 1096 | OSStatus error; /* Error info */ |
| 1097 | size_t processed; /* Number of bytes processed */ |
| 1098 | |
| 1099 | |
| 1100 | error = SSLRead(http->tls, buf, (size_t)len, &processed); |
| 1101 | DEBUG_printf(("6_httpTLSRead: error=%d, processed=%d", (int)error, |
| 1102 | (int)processed)); |
| 1103 | switch (error) |
| 1104 | { |
| 1105 | case 0 : |
| 1106 | result = (int)processed; |
| 1107 | break; |
| 1108 | |
| 1109 | case errSSLWouldBlock : |
| 1110 | if (processed) |
| 1111 | result = (int)processed; |
| 1112 | else |
| 1113 | { |
| 1114 | result = -1; |
| 1115 | errno = EINTR; |
| 1116 | } |
| 1117 | break; |
| 1118 | |
| 1119 | case errSSLClosedGraceful : |
| 1120 | default : |
| 1121 | if (processed) |
| 1122 | result = (int)processed; |
| 1123 | else |
| 1124 | { |
| 1125 | result = -1; |
| 1126 | errno = EPIPE; |
| 1127 | } |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | return (result); |
| 1132 | } |
| 1133 | |
| 1134 | |
| 1135 | /* |
| 1136 | * '_httpTLSSetOptions()' - Set TLS protocol and cipher suite options. |
| 1137 | */ |
| 1138 | |
| 1139 | void |
| 1140 | _httpTLSSetOptions(int options) /* I - Options */ |
| 1141 | { |
| 1142 | tls_options = options; |
| 1143 | } |
| 1144 | |
| 1145 | |
| 1146 | /* |
| 1147 | * '_httpTLSStart()' - Set up SSL/TLS support on a connection. |
| 1148 | */ |
| 1149 | |
| 1150 | int /* O - 0 on success, -1 on failure */ |
| 1151 | _httpTLSStart(http_t *http) /* I - HTTP connection */ |
| 1152 | { |
| 1153 | char hostname[256], /* Hostname */ |
| 1154 | *hostptr; /* Pointer into hostname */ |
| 1155 | _cups_globals_t *cg = _cupsGlobals(); |
| 1156 | /* Pointer to library globals */ |
| 1157 | OSStatus error; /* Error code */ |
| 1158 | const char *message = NULL;/* Error message */ |
| 1159 | cups_array_t *credentials; /* Credentials array */ |
| 1160 | cups_array_t *names; /* CUPS distinguished names */ |
| 1161 | CFArrayRef dn_array; /* CF distinguished names array */ |
| 1162 | CFIndex count; /* Number of credentials */ |
| 1163 | CFDataRef data; /* Certificate data */ |
| 1164 | int i; /* Looping var */ |
| 1165 | http_credential_t *credential; /* Credential data */ |
| 1166 | |
| 1167 | |
| 1168 | DEBUG_printf(("3_httpTLSStart(http=%p)", (void *)http)); |
| 1169 | |
| 1170 | if (tls_options < 0) |
| 1171 | { |
| 1172 | DEBUG_puts("4_httpTLSStart: Setting defaults."); |
| 1173 | _cupsSetDefaults(); |
| 1174 | DEBUG_printf(("4_httpTLSStart: tls_options=%x", tls_options)); |
| 1175 | } |
| 1176 | |
| 1177 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1178 | if (http->mode == _HTTP_MODE_SERVER && !tls_keychain) |
| 1179 | { |
| 1180 | DEBUG_puts("4_httpTLSStart: cupsSetServerCredentials not called."); |
| 1181 | http->error = errno = EINVAL; |
| 1182 | http->status = HTTP_STATUS_ERROR; |
| 1183 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Server credentials not set."), 1); |
| 1184 | |
| 1185 | return (-1); |
| 1186 | } |
| 1187 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 1188 | |
| 1189 | if ((http->tls = SSLCreateContext(kCFAllocatorDefault, http->mode == _HTTP_MODE_CLIENT ? kSSLClientSide : kSSLServerSide, kSSLStreamType)) == NULL) |
| 1190 | { |
| 1191 | DEBUG_puts("4_httpTLSStart: SSLCreateContext failed."); |
| 1192 | http->error = errno = ENOMEM; |
| 1193 | http->status = HTTP_STATUS_ERROR; |
| 1194 | _cupsSetHTTPError(HTTP_STATUS_ERROR); |
| 1195 | |
| 1196 | return (-1); |
| 1197 | } |
| 1198 | |
| 1199 | error = SSLSetConnection(http->tls, http); |
| 1200 | DEBUG_printf(("4_httpTLSStart: SSLSetConnection, error=%d", (int)error)); |
| 1201 | |
| 1202 | if (!error) |
| 1203 | { |
| 1204 | error = SSLSetIOFuncs(http->tls, http_cdsa_read, http_cdsa_write); |
| 1205 | DEBUG_printf(("4_httpTLSStart: SSLSetIOFuncs, error=%d", (int)error)); |
| 1206 | } |
| 1207 | |
| 1208 | if (!error) |
| 1209 | { |
| 1210 | error = SSLSetSessionOption(http->tls, kSSLSessionOptionBreakOnServerAuth, |
| 1211 | true); |
| 1212 | DEBUG_printf(("4_httpTLSStart: SSLSetSessionOption, error=%d", (int)error)); |
| 1213 | } |
| 1214 | |
| 1215 | if (!error) |
| 1216 | { |
| 1217 | SSLProtocol minProtocol; |
| 1218 | |
| 1219 | if (tls_options & _HTTP_TLS_DENY_TLS10) |
| 1220 | minProtocol = kTLSProtocol11; |
| 1221 | else if (tls_options & _HTTP_TLS_ALLOW_SSL3) |
| 1222 | minProtocol = kSSLProtocol3; |
| 1223 | else |
| 1224 | minProtocol = kTLSProtocol1; |
| 1225 | |
| 1226 | error = SSLSetProtocolVersionMin(http->tls, minProtocol); |
| 1227 | DEBUG_printf(("4_httpTLSStart: SSLSetProtocolVersionMin(%d), error=%d", minProtocol, (int)error)); |
| 1228 | } |
| 1229 | |
| 1230 | # if HAVE_SSLSETENABLEDCIPHERS |
| 1231 | if (!error) |
| 1232 | { |
| 1233 | SSLCipherSuite supported[100]; /* Supported cipher suites */ |
| 1234 | size_t num_supported; /* Number of supported cipher suites */ |
| 1235 | SSLCipherSuite enabled[100]; /* Cipher suites to enable */ |
| 1236 | size_t num_enabled; /* Number of cipher suites to enable */ |
| 1237 | |
| 1238 | num_supported = sizeof(supported) / sizeof(supported[0]); |
| 1239 | error = SSLGetSupportedCiphers(http->tls, supported, &num_supported); |
| 1240 | |
| 1241 | if (!error) |
| 1242 | { |
| 1243 | DEBUG_printf(("4_httpTLSStart: %d cipher suites supported.", (int)num_supported)); |
| 1244 | |
| 1245 | for (i = 0, num_enabled = 0; i < (int)num_supported && num_enabled < (sizeof(enabled) / sizeof(enabled[0])); i ++) |
| 1246 | { |
| 1247 | switch (supported[i]) |
| 1248 | { |
| 1249 | /* Obviously insecure cipher suites that we never want to use */ |
| 1250 | case SSL_NULL_WITH_NULL_NULL : |
| 1251 | case SSL_RSA_WITH_NULL_MD5 : |
| 1252 | case SSL_RSA_WITH_NULL_SHA : |
| 1253 | case SSL_RSA_EXPORT_WITH_RC4_40_MD5 : |
| 1254 | case SSL_RSA_EXPORT_WITH_RC2_CBC_40_MD5 : |
| 1255 | case SSL_RSA_EXPORT_WITH_DES40_CBC_SHA : |
| 1256 | case SSL_RSA_WITH_DES_CBC_SHA : |
| 1257 | case SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA : |
| 1258 | case SSL_DH_DSS_WITH_DES_CBC_SHA : |
| 1259 | case SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA : |
| 1260 | case SSL_DH_RSA_WITH_DES_CBC_SHA : |
| 1261 | case SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA : |
| 1262 | case SSL_DHE_DSS_WITH_DES_CBC_SHA : |
| 1263 | case SSL_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA : |
| 1264 | case SSL_DHE_RSA_WITH_DES_CBC_SHA : |
| 1265 | case SSL_DH_anon_EXPORT_WITH_RC4_40_MD5 : |
| 1266 | case SSL_DH_anon_WITH_RC4_128_MD5 : |
| 1267 | case SSL_DH_anon_EXPORT_WITH_DES40_CBC_SHA : |
| 1268 | case SSL_DH_anon_WITH_DES_CBC_SHA : |
| 1269 | case SSL_DH_anon_WITH_3DES_EDE_CBC_SHA : |
| 1270 | case SSL_FORTEZZA_DMS_WITH_NULL_SHA : |
| 1271 | case TLS_DH_anon_WITH_AES_128_CBC_SHA : |
| 1272 | case TLS_DH_anon_WITH_AES_256_CBC_SHA : |
| 1273 | case TLS_ECDH_ECDSA_WITH_NULL_SHA : |
| 1274 | case TLS_ECDHE_RSA_WITH_NULL_SHA : |
| 1275 | case TLS_ECDH_anon_WITH_NULL_SHA : |
| 1276 | case TLS_ECDH_anon_WITH_RC4_128_SHA : |
| 1277 | case TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA : |
| 1278 | case TLS_ECDH_anon_WITH_AES_128_CBC_SHA : |
| 1279 | case TLS_ECDH_anon_WITH_AES_256_CBC_SHA : |
| 1280 | case TLS_RSA_WITH_NULL_SHA256 : |
| 1281 | case TLS_DH_anon_WITH_AES_128_CBC_SHA256 : |
| 1282 | case TLS_DH_anon_WITH_AES_256_CBC_SHA256 : |
| 1283 | case TLS_PSK_WITH_NULL_SHA : |
| 1284 | case TLS_DHE_PSK_WITH_NULL_SHA : |
| 1285 | case TLS_RSA_PSK_WITH_NULL_SHA : |
| 1286 | case TLS_DH_anon_WITH_AES_128_GCM_SHA256 : |
| 1287 | case TLS_DH_anon_WITH_AES_256_GCM_SHA384 : |
| 1288 | case TLS_PSK_WITH_NULL_SHA256 : |
| 1289 | case TLS_PSK_WITH_NULL_SHA384 : |
| 1290 | case TLS_DHE_PSK_WITH_NULL_SHA256 : |
| 1291 | case TLS_DHE_PSK_WITH_NULL_SHA384 : |
| 1292 | case TLS_RSA_PSK_WITH_NULL_SHA256 : |
| 1293 | case TLS_RSA_PSK_WITH_NULL_SHA384 : |
| 1294 | case SSL_RSA_WITH_DES_CBC_MD5 : |
| 1295 | DEBUG_printf(("4_httpTLSStart: Excluding insecure cipher suite %d", supported[i])); |
| 1296 | break; |
| 1297 | |
| 1298 | /* RC4 cipher suites that should only be used as a last resort */ |
| 1299 | case SSL_RSA_WITH_RC4_128_MD5 : |
| 1300 | case SSL_RSA_WITH_RC4_128_SHA : |
| 1301 | case TLS_ECDH_ECDSA_WITH_RC4_128_SHA : |
| 1302 | case TLS_ECDHE_ECDSA_WITH_RC4_128_SHA : |
| 1303 | case TLS_ECDH_RSA_WITH_RC4_128_SHA : |
| 1304 | case TLS_ECDHE_RSA_WITH_RC4_128_SHA : |
| 1305 | case TLS_PSK_WITH_RC4_128_SHA : |
| 1306 | case TLS_DHE_PSK_WITH_RC4_128_SHA : |
| 1307 | case TLS_RSA_PSK_WITH_RC4_128_SHA : |
| 1308 | if (tls_options & _HTTP_TLS_ALLOW_RC4) |
| 1309 | enabled[num_enabled ++] = supported[i]; |
| 1310 | else |
| 1311 | DEBUG_printf(("4_httpTLSStart: Excluding RC4 cipher suite %d", supported[i])); |
| 1312 | break; |
| 1313 | |
| 1314 | /* DH/DHE cipher suites that are problematic with parameters < 1024 bits */ |
| 1315 | case TLS_DH_DSS_WITH_AES_128_CBC_SHA : |
| 1316 | case TLS_DH_RSA_WITH_AES_128_CBC_SHA : |
| 1317 | case TLS_DHE_DSS_WITH_AES_128_CBC_SHA : |
| 1318 | case TLS_DHE_RSA_WITH_AES_128_CBC_SHA : |
| 1319 | case TLS_DH_DSS_WITH_AES_256_CBC_SHA : |
| 1320 | case TLS_DH_RSA_WITH_AES_256_CBC_SHA : |
| 1321 | case TLS_DHE_DSS_WITH_AES_256_CBC_SHA : |
| 1322 | case TLS_DHE_RSA_WITH_AES_256_CBC_SHA : |
| 1323 | case TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA : |
| 1324 | case TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA : |
| 1325 | // case TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA : |
| 1326 | case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA : |
| 1327 | case TLS_DH_DSS_WITH_AES_128_CBC_SHA256 : |
| 1328 | case TLS_DH_RSA_WITH_AES_128_CBC_SHA256 : |
| 1329 | case TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 : |
| 1330 | case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 : |
| 1331 | case TLS_DH_DSS_WITH_AES_256_CBC_SHA256 : |
| 1332 | case TLS_DH_RSA_WITH_AES_256_CBC_SHA256 : |
| 1333 | case TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 : |
| 1334 | case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 : |
| 1335 | case TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA : |
| 1336 | case TLS_DHE_PSK_WITH_AES_128_CBC_SHA : |
| 1337 | case TLS_DHE_PSK_WITH_AES_256_CBC_SHA : |
| 1338 | // case TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 : |
| 1339 | // case TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 : |
| 1340 | case TLS_DH_RSA_WITH_AES_128_GCM_SHA256 : |
| 1341 | case TLS_DH_RSA_WITH_AES_256_GCM_SHA384 : |
| 1342 | // case TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 : |
| 1343 | // case TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 : |
| 1344 | case TLS_DH_DSS_WITH_AES_128_GCM_SHA256 : |
| 1345 | case TLS_DH_DSS_WITH_AES_256_GCM_SHA384 : |
| 1346 | case TLS_DHE_PSK_WITH_AES_128_GCM_SHA256 : |
| 1347 | case TLS_DHE_PSK_WITH_AES_256_GCM_SHA384 : |
| 1348 | case TLS_DHE_PSK_WITH_AES_128_CBC_SHA256 : |
| 1349 | case TLS_DHE_PSK_WITH_AES_256_CBC_SHA384 : |
| 1350 | if (tls_options & _HTTP_TLS_ALLOW_DH) |
| 1351 | enabled[num_enabled ++] = supported[i]; |
| 1352 | else |
| 1353 | DEBUG_printf(("4_httpTLSStart: Excluding DH/DHE cipher suite %d", supported[i])); |
| 1354 | break; |
| 1355 | |
| 1356 | /* Anything else we'll assume is secure */ |
| 1357 | default : |
| 1358 | enabled[num_enabled ++] = supported[i]; |
| 1359 | break; |
| 1360 | } |
| 1361 | } |
| 1362 | |
| 1363 | DEBUG_printf(("4_httpTLSStart: %d cipher suites enabled.", (int)num_enabled)); |
| 1364 | error = SSLSetEnabledCiphers(http->tls, enabled, num_enabled); |
| 1365 | } |
| 1366 | } |
| 1367 | #endif /* HAVE_SSLSETENABLEDCIPHERS */ |
| 1368 | |
| 1369 | if (!error && http->mode == _HTTP_MODE_CLIENT) |
| 1370 | { |
| 1371 | /* |
| 1372 | * Client: set client-side credentials, if any... |
| 1373 | */ |
| 1374 | |
| 1375 | if (cg->client_cert_cb) |
| 1376 | { |
| 1377 | error = SSLSetSessionOption(http->tls, |
| 1378 | kSSLSessionOptionBreakOnCertRequested, true); |
| 1379 | DEBUG_printf(("4_httpTLSStart: kSSLSessionOptionBreakOnCertRequested, " |
| 1380 | "error=%d", (int)error)); |
| 1381 | } |
| 1382 | else |
| 1383 | { |
| 1384 | error = http_cdsa_set_credentials(http); |
| 1385 | DEBUG_printf(("4_httpTLSStart: http_cdsa_set_credentials, error=%d", |
| 1386 | (int)error)); |
| 1387 | } |
| 1388 | } |
| 1389 | else if (!error) |
| 1390 | { |
| 1391 | /* |
| 1392 | * Server: find/create a certificate for TLS... |
| 1393 | */ |
| 1394 | |
| 1395 | if (http->fields[HTTP_FIELD_HOST][0]) |
| 1396 | { |
| 1397 | /* |
| 1398 | * Use hostname for TLS upgrade... |
| 1399 | */ |
| 1400 | |
| 1401 | strlcpy(hostname, http->fields[HTTP_FIELD_HOST], sizeof(hostname)); |
| 1402 | } |
| 1403 | else |
| 1404 | { |
| 1405 | /* |
| 1406 | * Resolve hostname from connection address... |
| 1407 | */ |
| 1408 | |
| 1409 | http_addr_t addr; /* Connection address */ |
| 1410 | socklen_t addrlen; /* Length of address */ |
| 1411 | |
| 1412 | addrlen = sizeof(addr); |
| 1413 | if (getsockname(http->fd, (struct sockaddr *)&addr, &addrlen)) |
| 1414 | { |
| 1415 | DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno))); |
| 1416 | hostname[0] = '\0'; |
| 1417 | } |
| 1418 | else if (httpAddrLocalhost(&addr)) |
| 1419 | hostname[0] = '\0'; |
| 1420 | else |
| 1421 | { |
| 1422 | httpAddrLookup(&addr, hostname, sizeof(hostname)); |
| 1423 | DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname)); |
| 1424 | } |
| 1425 | } |
| 1426 | |
| 1427 | if (isdigit(hostname[0] & 255) || hostname[0] == '[') |
| 1428 | hostname[0] = '\0'; /* Don't allow numeric addresses */ |
| 1429 | |
| 1430 | if (hostname[0]) |
| 1431 | http->tls_credentials = http_cdsa_copy_server(hostname); |
| 1432 | else if (tls_common_name) |
| 1433 | http->tls_credentials = http_cdsa_copy_server(tls_common_name); |
| 1434 | |
| 1435 | if (!http->tls_credentials && tls_auto_create && (hostname[0] || tls_common_name)) |
| 1436 | { |
| 1437 | DEBUG_printf(("4_httpTLSStart: Auto-create credentials for \"%s\".", hostname[0] ? hostname : tls_common_name)); |
| 1438 | |
| 1439 | if (!cupsMakeServerCredentials(tls_keypath, hostname[0] ? hostname : tls_common_name, 0, NULL, time(NULL) + 365 * 86400)) |
| 1440 | { |
| 1441 | DEBUG_puts("4_httpTLSStart: cupsMakeServerCredentials failed."); |
| 1442 | http->error = errno = EINVAL; |
| 1443 | http->status = HTTP_STATUS_ERROR; |
| 1444 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create server credentials."), 1); |
| 1445 | |
| 1446 | return (-1); |
| 1447 | } |
| 1448 | |
| 1449 | http->tls_credentials = http_cdsa_copy_server(hostname[0] ? hostname : tls_common_name); |
| 1450 | } |
| 1451 | |
| 1452 | if (!http->tls_credentials) |
| 1453 | { |
| 1454 | DEBUG_puts("4_httpTLSStart: Unable to find server credentials."); |
| 1455 | http->error = errno = EINVAL; |
| 1456 | http->status = HTTP_STATUS_ERROR; |
| 1457 | _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to find server credentials."), 1); |
| 1458 | |
| 1459 | return (-1); |
| 1460 | } |
| 1461 | |
| 1462 | error = SSLSetCertificate(http->tls, http->tls_credentials); |
| 1463 | |
| 1464 | DEBUG_printf(("4_httpTLSStart: SSLSetCertificate, error=%d", (int)error)); |
| 1465 | } |
| 1466 | |
| 1467 | DEBUG_printf(("4_httpTLSStart: tls_credentials=%p", (void *)http->tls_credentials)); |
| 1468 | |
| 1469 | /* |
| 1470 | * Let the server know which hostname/domain we are trying to connect to |
| 1471 | * in case it wants to serve up a certificate with a matching common name. |
| 1472 | */ |
| 1473 | |
| 1474 | if (!error && http->mode == _HTTP_MODE_CLIENT) |
| 1475 | { |
| 1476 | /* |
| 1477 | * Client: get the hostname to use for TLS... |
| 1478 | */ |
| 1479 | |
| 1480 | if (httpAddrLocalhost(http->hostaddr)) |
| 1481 | { |
| 1482 | strlcpy(hostname, "localhost", sizeof(hostname)); |
| 1483 | } |
| 1484 | else |
| 1485 | { |
| 1486 | /* |
| 1487 | * Otherwise make sure the hostname we have does not end in a trailing dot. |
| 1488 | */ |
| 1489 | |
| 1490 | strlcpy(hostname, http->hostname, sizeof(hostname)); |
| 1491 | if ((hostptr = hostname + strlen(hostname) - 1) >= hostname && |
| 1492 | *hostptr == '.') |
| 1493 | *hostptr = '\0'; |
| 1494 | } |
| 1495 | |
| 1496 | error = SSLSetPeerDomainName(http->tls, hostname, strlen(hostname)); |
| 1497 | |
| 1498 | DEBUG_printf(("4_httpTLSStart: SSLSetPeerDomainName, error=%d", (int)error)); |
| 1499 | } |
| 1500 | |
| 1501 | if (!error) |
| 1502 | { |
| 1503 | int done = 0; /* Are we done yet? */ |
| 1504 | |
| 1505 | while (!error && !done) |
| 1506 | { |
| 1507 | error = SSLHandshake(http->tls); |
| 1508 | |
| 1509 | DEBUG_printf(("4_httpTLSStart: SSLHandshake returned %d.", (int)error)); |
| 1510 | |
| 1511 | switch (error) |
| 1512 | { |
| 1513 | case noErr : |
| 1514 | done = 1; |
| 1515 | break; |
| 1516 | |
| 1517 | case errSSLWouldBlock : |
| 1518 | error = noErr; /* Force a retry */ |
| 1519 | usleep(1000); /* in 1 millisecond */ |
| 1520 | break; |
| 1521 | |
| 1522 | case errSSLServerAuthCompleted : |
| 1523 | error = 0; |
| 1524 | if (cg->server_cert_cb) |
| 1525 | { |
| 1526 | error = httpCopyCredentials(http, &credentials); |
| 1527 | if (!error) |
| 1528 | { |
| 1529 | error = (cg->server_cert_cb)(http, http->tls, credentials, |
| 1530 | cg->server_cert_data); |
| 1531 | httpFreeCredentials(credentials); |
| 1532 | } |
| 1533 | |
| 1534 | DEBUG_printf(("4_httpTLSStart: Server certificate callback " |
| 1535 | "returned %d.", (int)error)); |
| 1536 | } |
| 1537 | break; |
| 1538 | |
| 1539 | case errSSLClientCertRequested : |
| 1540 | error = 0; |
| 1541 | |
| 1542 | if (cg->client_cert_cb) |
| 1543 | { |
| 1544 | names = NULL; |
| 1545 | if (!(error = SSLCopyDistinguishedNames(http->tls, &dn_array)) && |
| 1546 | dn_array) |
| 1547 | { |
| 1548 | if ((names = cupsArrayNew(NULL, NULL)) != NULL) |
| 1549 | { |
| 1550 | for (i = 0, count = CFArrayGetCount(dn_array); i < count; i++) |
| 1551 | { |
| 1552 | data = (CFDataRef)CFArrayGetValueAtIndex(dn_array, i); |
| 1553 | |
| 1554 | if ((credential = malloc(sizeof(*credential))) != NULL) |
| 1555 | { |
| 1556 | credential->datalen = (size_t)CFDataGetLength(data); |
| 1557 | if ((credential->data = malloc(credential->datalen))) |
| 1558 | { |
| 1559 | memcpy((void *)credential->data, CFDataGetBytePtr(data), |
| 1560 | credential->datalen); |
| 1561 | cupsArrayAdd(names, credential); |
| 1562 | } |
| 1563 | else |
| 1564 | free(credential); |
| 1565 | } |
| 1566 | } |
| 1567 | } |
| 1568 | |
| 1569 | CFRelease(dn_array); |
| 1570 | } |
| 1571 | |
| 1572 | if (!error) |
| 1573 | { |
| 1574 | error = (cg->client_cert_cb)(http, http->tls, names, |
| 1575 | cg->client_cert_data); |
| 1576 | |
| 1577 | DEBUG_printf(("4_httpTLSStart: Client certificate callback " |
| 1578 | "returned %d.", (int)error)); |
| 1579 | } |
| 1580 | |
| 1581 | httpFreeCredentials(names); |
| 1582 | } |
| 1583 | break; |
| 1584 | |
| 1585 | case errSSLUnknownRootCert : |
| 1586 | message = _("Unable to establish a secure connection to host " |
| 1587 | "(untrusted certificate)."); |
| 1588 | break; |
| 1589 | |
| 1590 | case errSSLNoRootCert : |
| 1591 | message = _("Unable to establish a secure connection to host " |
| 1592 | "(self-signed certificate)."); |
| 1593 | break; |
| 1594 | |
| 1595 | case errSSLCertExpired : |
| 1596 | message = _("Unable to establish a secure connection to host " |
| 1597 | "(expired certificate)."); |
| 1598 | break; |
| 1599 | |
| 1600 | case errSSLCertNotYetValid : |
| 1601 | message = _("Unable to establish a secure connection to host " |
| 1602 | "(certificate not yet valid)."); |
| 1603 | break; |
| 1604 | |
| 1605 | case errSSLHostNameMismatch : |
| 1606 | message = _("Unable to establish a secure connection to host " |
| 1607 | "(host name mismatch)."); |
| 1608 | break; |
| 1609 | |
| 1610 | case errSSLXCertChainInvalid : |
| 1611 | message = _("Unable to establish a secure connection to host " |
| 1612 | "(certificate chain invalid)."); |
| 1613 | break; |
| 1614 | |
| 1615 | case errSSLConnectionRefused : |
| 1616 | message = _("Unable to establish a secure connection to host " |
| 1617 | "(peer dropped connection before responding)."); |
| 1618 | break; |
| 1619 | |
| 1620 | default : |
| 1621 | break; |
| 1622 | } |
| 1623 | } |
| 1624 | } |
| 1625 | |
| 1626 | if (error) |
| 1627 | { |
| 1628 | http->error = error; |
| 1629 | http->status = HTTP_STATUS_ERROR; |
| 1630 | errno = ECONNREFUSED; |
| 1631 | |
| 1632 | CFRelease(http->tls); |
| 1633 | http->tls = NULL; |
| 1634 | |
| 1635 | /* |
| 1636 | * If an error string wasn't set by the callbacks use a generic one... |
| 1637 | */ |
| 1638 | |
| 1639 | if (!message) |
| 1640 | #ifdef HAVE_CSSMERRORSTRING |
| 1641 | message = cssmErrorString(error); |
| 1642 | #else |
| 1643 | message = _("Unable to establish a secure connection to host."); |
| 1644 | #endif /* HAVE_CSSMERRORSTRING */ |
| 1645 | |
| 1646 | _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI, message, 1); |
| 1647 | |
| 1648 | return (-1); |
| 1649 | } |
| 1650 | |
| 1651 | return (0); |
| 1652 | } |
| 1653 | |
| 1654 | |
| 1655 | /* |
| 1656 | * '_httpTLSStop()' - Shut down SSL/TLS on a connection. |
| 1657 | */ |
| 1658 | |
| 1659 | void |
| 1660 | _httpTLSStop(http_t *http) /* I - HTTP connection */ |
| 1661 | { |
| 1662 | while (SSLClose(http->tls) == errSSLWouldBlock) |
| 1663 | usleep(1000); |
| 1664 | |
| 1665 | CFRelease(http->tls); |
| 1666 | |
| 1667 | if (http->tls_credentials) |
| 1668 | CFRelease(http->tls_credentials); |
| 1669 | |
| 1670 | http->tls = NULL; |
| 1671 | http->tls_credentials = NULL; |
| 1672 | } |
| 1673 | |
| 1674 | |
| 1675 | /* |
| 1676 | * '_httpTLSWrite()' - Write to a SSL/TLS connection. |
| 1677 | */ |
| 1678 | |
| 1679 | int /* O - Bytes written */ |
| 1680 | _httpTLSWrite(http_t *http, /* I - HTTP connection */ |
| 1681 | const char *buf, /* I - Buffer holding data */ |
| 1682 | int len) /* I - Length of buffer */ |
| 1683 | { |
| 1684 | ssize_t result; /* Return value */ |
| 1685 | OSStatus error; /* Error info */ |
| 1686 | size_t processed; /* Number of bytes processed */ |
| 1687 | |
| 1688 | |
| 1689 | DEBUG_printf(("2_httpTLSWrite(http=%p, buf=%p, len=%d)", (void *)http, (void *)buf, len)); |
| 1690 | |
| 1691 | error = SSLWrite(http->tls, buf, (size_t)len, &processed); |
| 1692 | |
| 1693 | switch (error) |
| 1694 | { |
| 1695 | case 0 : |
| 1696 | result = (int)processed; |
| 1697 | break; |
| 1698 | |
| 1699 | case errSSLWouldBlock : |
| 1700 | if (processed) |
| 1701 | { |
| 1702 | result = (int)processed; |
| 1703 | } |
| 1704 | else |
| 1705 | { |
| 1706 | result = -1; |
| 1707 | errno = EINTR; |
| 1708 | } |
| 1709 | break; |
| 1710 | |
| 1711 | case errSSLClosedGraceful : |
| 1712 | default : |
| 1713 | if (processed) |
| 1714 | { |
| 1715 | result = (int)processed; |
| 1716 | } |
| 1717 | else |
| 1718 | { |
| 1719 | result = -1; |
| 1720 | errno = EPIPE; |
| 1721 | } |
| 1722 | break; |
| 1723 | } |
| 1724 | |
| 1725 | DEBUG_printf(("3_httpTLSWrite: Returning %d.", (int)result)); |
| 1726 | |
| 1727 | return ((int)result); |
| 1728 | } |
| 1729 | |
| 1730 | |
| 1731 | /* |
| 1732 | * 'http_cdsa_copy_server()' - Find and copy server credentials from the keychain. |
| 1733 | */ |
| 1734 | |
| 1735 | static CFArrayRef /* O - Array of certificates or NULL */ |
| 1736 | http_cdsa_copy_server( |
| 1737 | const char *common_name) /* I - Server's hostname */ |
| 1738 | { |
| 1739 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1740 | OSStatus err; /* Error info */ |
| 1741 | SecIdentityRef identity = NULL;/* Identity */ |
| 1742 | CFArrayRef certificates = NULL; |
| 1743 | /* Certificate array */ |
| 1744 | SecPolicyRef policy = NULL; /* Policy ref */ |
| 1745 | CFStringRef cfcommon_name = NULL; |
| 1746 | /* Server name */ |
| 1747 | CFMutableDictionaryRef query = NULL; /* Query qualifiers */ |
| 1748 | CFArrayRef list = NULL; /* Keychain list */ |
| 1749 | SecKeychainRef syschain = NULL;/* System keychain */ |
| 1750 | |
| 1751 | |
| 1752 | DEBUG_printf(("3http_cdsa_copy_server(common_name=\"%s\")", common_name)); |
| 1753 | |
| 1754 | cfcommon_name = CFStringCreateWithCString(kCFAllocatorDefault, common_name, kCFStringEncodingUTF8); |
| 1755 | |
| 1756 | policy = SecPolicyCreateSSL(1, cfcommon_name); |
| 1757 | |
| 1758 | if (!policy) |
| 1759 | { |
| 1760 | DEBUG_puts("4http_cdsa_copy_server: Unable to create SSL policy."); |
| 1761 | goto cleanup; |
| 1762 | } |
| 1763 | |
| 1764 | if (!(query = CFDictionaryCreateMutable(kCFAllocatorDefault, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks))) |
| 1765 | { |
| 1766 | DEBUG_puts("4http_cdsa_copy_server: Unable to create query dictionary."); |
| 1767 | goto cleanup; |
| 1768 | } |
| 1769 | |
| 1770 | _cupsMutexLock(&tls_mutex); |
| 1771 | |
| 1772 | CFDictionaryAddValue(query, kSecClass, kSecClassIdentity); |
| 1773 | CFDictionaryAddValue(query, kSecMatchPolicy, policy); |
| 1774 | CFDictionaryAddValue(query, kSecReturnRef, kCFBooleanTrue); |
| 1775 | CFDictionaryAddValue(query, kSecMatchLimit, kSecMatchLimitOne); |
| 1776 | |
| 1777 | syschain = http_cdsa_open_system_keychain(); |
| 1778 | |
| 1779 | if (syschain) |
| 1780 | { |
| 1781 | const void *values[2] = { syschain, tls_keychain }; |
| 1782 | |
| 1783 | list = CFArrayCreate(kCFAllocatorDefault, (const void **)values, 2, &kCFTypeArrayCallBacks); |
| 1784 | } |
| 1785 | else |
| 1786 | list = CFArrayCreate(kCFAllocatorDefault, (const void **)&tls_keychain, 1, &kCFTypeArrayCallBacks); |
| 1787 | |
| 1788 | CFDictionaryAddValue(query, kSecMatchSearchList, list); |
| 1789 | CFRelease(list); |
| 1790 | |
| 1791 | err = SecItemCopyMatching(query, (CFTypeRef *)&identity); |
| 1792 | |
| 1793 | _cupsMutexUnlock(&tls_mutex); |
| 1794 | |
| 1795 | if (err != noErr) |
| 1796 | { |
| 1797 | DEBUG_printf(("4http_cdsa_copy_server: SecItemCopyMatching failed with status %d.", (int)err)); |
| 1798 | goto cleanup; |
| 1799 | } |
| 1800 | |
| 1801 | if (CFGetTypeID(identity) != SecIdentityGetTypeID()) |
| 1802 | { |
| 1803 | DEBUG_puts("4http_cdsa_copy_server: Search returned something that is not an identity."); |
| 1804 | goto cleanup; |
| 1805 | } |
| 1806 | |
| 1807 | if ((certificates = CFArrayCreate(NULL, (const void **)&identity, 1, &kCFTypeArrayCallBacks)) == NULL) |
| 1808 | { |
| 1809 | DEBUG_puts("4http_cdsa_copy_server: Unable to create array of certificates."); |
| 1810 | goto cleanup; |
| 1811 | } |
| 1812 | |
| 1813 | cleanup : |
| 1814 | |
| 1815 | if (syschain) |
| 1816 | CFRelease(syschain); |
| 1817 | if (identity) |
| 1818 | CFRelease(identity); |
| 1819 | if (policy) |
| 1820 | CFRelease(policy); |
| 1821 | if (cfcommon_name) |
| 1822 | CFRelease(cfcommon_name); |
| 1823 | if (query) |
| 1824 | CFRelease(query); |
| 1825 | |
| 1826 | DEBUG_printf(("4http_cdsa_copy_server: Returning %p.", (void *)certificates)); |
| 1827 | |
| 1828 | return (certificates); |
| 1829 | #else |
| 1830 | |
| 1831 | if (!tls_selfsigned) |
| 1832 | return (NULL); |
| 1833 | |
| 1834 | return (CFArrayCreate(NULL, (const void **)&tls_selfsigned, 1, &kCFTypeArrayCallBacks)); |
| 1835 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 1836 | } |
| 1837 | |
| 1838 | |
| 1839 | /* |
| 1840 | * 'http_cdsa_create_credential()' - Create a single credential in the internal format. |
| 1841 | */ |
| 1842 | |
| 1843 | static SecCertificateRef /* O - Certificate */ |
| 1844 | http_cdsa_create_credential( |
| 1845 | http_credential_t *credential) /* I - Credential */ |
| 1846 | { |
| 1847 | if (!credential) |
| 1848 | return (NULL); |
| 1849 | |
| 1850 | return (SecCertificateCreateWithBytes(kCFAllocatorDefault, credential->data, (CFIndex)credential->datalen)); |
| 1851 | } |
| 1852 | |
| 1853 | |
| 1854 | #ifdef HAVE_SECKEYCHAINOPEN |
| 1855 | /* |
| 1856 | * 'http_cdsa_default_path()' - Get the default keychain path. |
| 1857 | */ |
| 1858 | |
| 1859 | static const char * /* O - Keychain path */ |
| 1860 | http_cdsa_default_path(char *buffer, /* I - Path buffer */ |
| 1861 | size_t bufsize) /* I - Size of buffer */ |
| 1862 | { |
| 1863 | const char *home = getenv("HOME"); /* HOME environment variable */ |
| 1864 | |
| 1865 | |
| 1866 | /* |
| 1867 | * Determine the default keychain path. Note that the login and system |
| 1868 | * keychains are no longer accessible to user applications starting in macOS |
| 1869 | * 10.11.4 (!), so we need to create our own keychain just for CUPS. |
| 1870 | */ |
| 1871 | |
| 1872 | if (getuid() && home) |
| 1873 | snprintf(buffer, bufsize, "%s/.cups/ssl.keychain", home); |
| 1874 | else |
| 1875 | strlcpy(buffer, "/etc/cups/ssl.keychain", bufsize); |
| 1876 | |
| 1877 | DEBUG_printf(("1http_cdsa_default_path: Using default path \"%s\".", buffer)); |
| 1878 | |
| 1879 | return (buffer); |
| 1880 | } |
| 1881 | |
| 1882 | |
| 1883 | /* |
| 1884 | * 'http_cdsa_open_keychain()' - Open (or create) a keychain. |
| 1885 | */ |
| 1886 | |
| 1887 | static SecKeychainRef /* O - Keychain or NULL */ |
| 1888 | http_cdsa_open_keychain( |
| 1889 | const char *path, /* I - Path to keychain */ |
| 1890 | char *filename, /* I - Keychain filename */ |
| 1891 | size_t filesize) /* I - Size of filename buffer */ |
| 1892 | { |
| 1893 | SecKeychainRef keychain = NULL;/* Temporary keychain */ |
| 1894 | OSStatus err; /* Error code */ |
| 1895 | Boolean interaction; /* Interaction allowed? */ |
| 1896 | SecKeychainStatus status = 0; /* Keychain status */ |
| 1897 | |
| 1898 | |
| 1899 | /* |
| 1900 | * Get the keychain filename... |
| 1901 | */ |
| 1902 | |
| 1903 | if (!path) |
| 1904 | path = http_cdsa_default_path(filename, filesize); |
| 1905 | else |
| 1906 | strlcpy(filename, path, filesize); |
| 1907 | |
| 1908 | /* |
| 1909 | * Save the interaction setting and disable while we open the keychain... |
| 1910 | */ |
| 1911 | |
| 1912 | SecKeychainGetUserInteractionAllowed(&interaction); |
| 1913 | SecKeychainSetUserInteractionAllowed(FALSE); |
| 1914 | |
| 1915 | if (access(path, R_OK)) |
| 1916 | { |
| 1917 | /* |
| 1918 | * Create a new keychain at the given path... |
| 1919 | */ |
| 1920 | |
| 1921 | err = SecKeychainCreate(path, _CUPS_CDSA_PASSLEN, _CUPS_CDSA_PASSWORD, FALSE, NULL, &keychain); |
| 1922 | } |
| 1923 | else |
| 1924 | { |
| 1925 | /* |
| 1926 | * Open the existing keychain and unlock as needed... |
| 1927 | */ |
| 1928 | |
| 1929 | err = SecKeychainOpen(path, &keychain); |
| 1930 | |
| 1931 | if (err == noErr) |
| 1932 | err = SecKeychainGetStatus(keychain, &status); |
| 1933 | |
| 1934 | if (err == noErr && !(status & kSecUnlockStateStatus)) |
| 1935 | err = SecKeychainUnlock(keychain, _CUPS_CDSA_PASSLEN, _CUPS_CDSA_PASSWORD, TRUE); |
| 1936 | } |
| 1937 | |
| 1938 | /* |
| 1939 | * Restore interaction setting... |
| 1940 | */ |
| 1941 | |
| 1942 | SecKeychainSetUserInteractionAllowed(interaction); |
| 1943 | |
| 1944 | /* |
| 1945 | * Release the keychain if we had any errors... |
| 1946 | */ |
| 1947 | |
| 1948 | if (err != noErr) |
| 1949 | { |
| 1950 | /* TODO: Set cups last error string */ |
| 1951 | DEBUG_printf(("4http_cdsa_open_keychain: Unable to open keychain (%d), returning NULL.", (int)err)); |
| 1952 | |
| 1953 | if (keychain) |
| 1954 | { |
| 1955 | CFRelease(keychain); |
| 1956 | keychain = NULL; |
| 1957 | } |
| 1958 | } |
| 1959 | |
| 1960 | /* |
| 1961 | * Return the keychain or NULL... |
| 1962 | */ |
| 1963 | |
| 1964 | return (keychain); |
| 1965 | } |
| 1966 | |
| 1967 | |
| 1968 | /* |
| 1969 | * 'http_cdsa_open_system_keychain()' - Open the System keychain. |
| 1970 | */ |
| 1971 | |
| 1972 | static SecKeychainRef |
| 1973 | http_cdsa_open_system_keychain(void) |
| 1974 | { |
| 1975 | SecKeychainRef keychain = NULL;/* Temporary keychain */ |
| 1976 | OSStatus err; /* Error code */ |
| 1977 | Boolean interaction; /* Interaction allowed? */ |
| 1978 | SecKeychainStatus status = 0; /* Keychain status */ |
| 1979 | |
| 1980 | |
| 1981 | /* |
| 1982 | * Save the interaction setting and disable while we open the keychain... |
| 1983 | */ |
| 1984 | |
| 1985 | SecKeychainGetUserInteractionAllowed(&interaction); |
| 1986 | SecKeychainSetUserInteractionAllowed(TRUE); |
| 1987 | |
| 1988 | err = SecKeychainOpen("/Library/Keychains/System.keychain", &keychain); |
| 1989 | |
| 1990 | if (err == noErr) |
| 1991 | err = SecKeychainGetStatus(keychain, &status); |
| 1992 | |
| 1993 | if (err == noErr && !(status & kSecUnlockStateStatus)) |
| 1994 | err = errSecInteractionNotAllowed; |
| 1995 | |
| 1996 | /* |
| 1997 | * Restore interaction setting... |
| 1998 | */ |
| 1999 | |
| 2000 | SecKeychainSetUserInteractionAllowed(interaction); |
| 2001 | |
| 2002 | /* |
| 2003 | * Release the keychain if we had any errors... |
| 2004 | */ |
| 2005 | |
| 2006 | if (err != noErr) |
| 2007 | { |
| 2008 | /* TODO: Set cups last error string */ |
| 2009 | DEBUG_printf(("4http_cdsa_open_system_keychain: Unable to open keychain (%d), returning NULL.", (int)err)); |
| 2010 | |
| 2011 | if (keychain) |
| 2012 | { |
| 2013 | CFRelease(keychain); |
| 2014 | keychain = NULL; |
| 2015 | } |
| 2016 | } |
| 2017 | |
| 2018 | /* |
| 2019 | * Return the keychain or NULL... |
| 2020 | */ |
| 2021 | |
| 2022 | return (keychain); |
| 2023 | } |
| 2024 | #endif /* HAVE_SECKEYCHAINOPEN */ |
| 2025 | |
| 2026 | |
| 2027 | /* |
| 2028 | * 'http_cdsa_read()' - Read function for the CDSA library. |
| 2029 | */ |
| 2030 | |
| 2031 | static OSStatus /* O - -1 on error, 0 on success */ |
| 2032 | http_cdsa_read( |
| 2033 | SSLConnectionRef connection, /* I - SSL/TLS connection */ |
| 2034 | void *data, /* I - Data buffer */ |
| 2035 | size_t *dataLength) /* IO - Number of bytes */ |
| 2036 | { |
| 2037 | OSStatus result; /* Return value */ |
| 2038 | ssize_t bytes; /* Number of bytes read */ |
| 2039 | http_t *http; /* HTTP connection */ |
| 2040 | |
| 2041 | |
| 2042 | http = (http_t *)connection; |
| 2043 | |
| 2044 | if (!http->blocking) |
| 2045 | { |
| 2046 | /* |
| 2047 | * Make sure we have data before we read... |
| 2048 | */ |
| 2049 | |
| 2050 | while (!_httpWait(http, http->wait_value, 0)) |
| 2051 | { |
| 2052 | if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data)) |
| 2053 | continue; |
| 2054 | |
| 2055 | http->error = ETIMEDOUT; |
| 2056 | return (-1); |
| 2057 | } |
| 2058 | } |
| 2059 | |
| 2060 | do |
| 2061 | { |
| 2062 | bytes = recv(http->fd, data, *dataLength, 0); |
| 2063 | } |
| 2064 | while (bytes == -1 && (errno == EINTR || errno == EAGAIN)); |
| 2065 | |
| 2066 | if ((size_t)bytes == *dataLength) |
| 2067 | { |
| 2068 | result = 0; |
| 2069 | } |
| 2070 | else if (bytes > 0) |
| 2071 | { |
| 2072 | *dataLength = (size_t)bytes; |
| 2073 | result = errSSLWouldBlock; |
| 2074 | } |
| 2075 | else |
| 2076 | { |
| 2077 | *dataLength = 0; |
| 2078 | |
| 2079 | if (bytes == 0) |
| 2080 | result = errSSLClosedGraceful; |
| 2081 | else if (errno == EAGAIN) |
| 2082 | result = errSSLWouldBlock; |
| 2083 | else |
| 2084 | result = errSSLClosedAbort; |
| 2085 | } |
| 2086 | |
| 2087 | return (result); |
| 2088 | } |
| 2089 | |
| 2090 | |
| 2091 | /* |
| 2092 | * 'http_cdsa_set_credentials()' - Set the TLS credentials. |
| 2093 | */ |
| 2094 | |
| 2095 | static int /* O - Status of connection */ |
| 2096 | http_cdsa_set_credentials(http_t *http) /* I - HTTP connection */ |
| 2097 | { |
| 2098 | _cups_globals_t *cg = _cupsGlobals(); /* Pointer to library globals */ |
| 2099 | OSStatus error = 0; /* Error code */ |
| 2100 | http_tls_credentials_t credentials = NULL; |
| 2101 | /* TLS credentials */ |
| 2102 | |
| 2103 | |
| 2104 | DEBUG_printf(("7http_tls_set_credentials(%p)", (void *)http)); |
| 2105 | |
| 2106 | /* |
| 2107 | * Prefer connection specific credentials... |
| 2108 | */ |
| 2109 | |
| 2110 | if ((credentials = http->tls_credentials) == NULL) |
| 2111 | credentials = cg->tls_credentials; |
| 2112 | |
| 2113 | if (credentials) |
| 2114 | { |
| 2115 | error = SSLSetCertificate(http->tls, credentials); |
| 2116 | DEBUG_printf(("4http_tls_set_credentials: SSLSetCertificate, error=%d", |
| 2117 | (int)error)); |
| 2118 | } |
| 2119 | else |
| 2120 | DEBUG_puts("4http_tls_set_credentials: No credentials to set."); |
| 2121 | |
| 2122 | return (error); |
| 2123 | } |
| 2124 | |
| 2125 | |
| 2126 | /* |
| 2127 | * 'http_cdsa_write()' - Write function for the CDSA library. |
| 2128 | */ |
| 2129 | |
| 2130 | static OSStatus /* O - -1 on error, 0 on success */ |
| 2131 | http_cdsa_write( |
| 2132 | SSLConnectionRef connection, /* I - SSL/TLS connection */ |
| 2133 | const void *data, /* I - Data buffer */ |
| 2134 | size_t *dataLength) /* IO - Number of bytes */ |
| 2135 | { |
| 2136 | OSStatus result; /* Return value */ |
| 2137 | ssize_t bytes; /* Number of bytes read */ |
| 2138 | http_t *http; /* HTTP connection */ |
| 2139 | |
| 2140 | |
| 2141 | http = (http_t *)connection; |
| 2142 | |
| 2143 | do |
| 2144 | { |
| 2145 | bytes = write(http->fd, data, *dataLength); |
| 2146 | } |
| 2147 | while (bytes == -1 && (errno == EINTR || errno == EAGAIN)); |
| 2148 | |
| 2149 | if ((size_t)bytes == *dataLength) |
| 2150 | { |
| 2151 | result = 0; |
| 2152 | } |
| 2153 | else if (bytes >= 0) |
| 2154 | { |
| 2155 | *dataLength = (size_t)bytes; |
| 2156 | result = errSSLWouldBlock; |
| 2157 | } |
| 2158 | else |
| 2159 | { |
| 2160 | *dataLength = 0; |
| 2161 | |
| 2162 | if (errno == EAGAIN) |
| 2163 | result = errSSLWouldBlock; |
| 2164 | else |
| 2165 | result = errSSLClosedAbort; |
| 2166 | } |
| 2167 | |
| 2168 | return (result); |
| 2169 | } |