/usr/include/sasl/sasl.h is in libsasl2-dev 2.1.26.dfsg1-13+deb8u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 | /* This is a proposed C API for support of SASL
*
*********************************IMPORTANT*******************************
* send email to chris.newman@innosoft.com and cyrus-bugs@andrew.cmu.edu *
* if you need to add new error codes, callback types, property values, *
* etc. It is important to keep the multiple implementations of this *
* API from diverging. *
*********************************IMPORTANT*******************************
*
* Basic Type Summary:
* sasl_conn_t Context for a SASL connection negotiation
* sasl_ssf_t Security layer Strength Factor
* sasl_callback_t A typed client/server callback function and context
* sasl_interact_t A client interaction descriptor
* sasl_secret_t A client password
* sasl_rand_t Random data context structure
* sasl_security_properties_t An application's required security level
*
* Callbacks:
* sasl_getopt_t client/server: Get an option value
* sasl_logmsg_t client/server: Log message handler
* sasl_getsimple_t client: Get user/language list
* sasl_getsecret_t client: Get authentication secret
* sasl_chalprompt_t client: Display challenge and prompt for response
*
* Server only Callbacks:
* sasl_authorize_t user authorization policy callback
* sasl_getconfpath_t get path to search for config file
* sasl_server_userdb_checkpass check password and auxprops in userdb
* sasl_server_userdb_setpass set password in userdb
* sasl_server_canon_user canonicalize username routine
*
* Client/Server Function Summary:
* sasl_done Release all SASL global state
* sasl_dispose Connection done: Dispose of sasl_conn_t
* sasl_getprop Get property (e.g., user name, security layer info)
* sasl_setprop Set property (e.g., external ssf)
* sasl_errdetail Generate string from last error on connection
* sasl_errstring Translate sasl error code to a string
* sasl_encode Encode data to send using security layer
* sasl_decode Decode data received using security layer
*
* Utility functions:
* sasl_encode64 Encode data to send using MIME base64 encoding
* sasl_decode64 Decode data received using MIME base64 encoding
* sasl_erasebuffer Erase a buffer
*
* Client Function Summary:
* sasl_client_init Load and initialize client plug-ins (call once)
* sasl_client_new Initialize client connection context: sasl_conn_t
* sasl_client_start Select mechanism for connection
* sasl_client_step Perform one authentication step
*
* Server Function Summary
* sasl_server_init Load and initialize server plug-ins (call once)
* sasl_server_new Initialize server connection context: sasl_conn_t
* sasl_listmech Create list of available mechanisms
* sasl_server_start Begin an authentication exchange
* sasl_server_step Perform one authentication exchange step
* sasl_checkpass Check a plaintext passphrase
* sasl_checkapop Check an APOP challenge/response (uses pseudo "APOP"
* mechanism similar to CRAM-MD5 mechanism; optional)
* sasl_user_exists Check if user exists
* sasl_setpass Change a password or add a user entry
* sasl_auxprop_request Request auxiliary properties
* sasl_auxprop_getctx Get auxiliary property context for connection
* sasl_auxprop_store Store a set of auxiliary properties
*
* Basic client model:
* 1. client calls sasl_client_init() at startup to load plug-ins
* 2. when connection formed, call sasl_client_new()
* 3. once list of supported mechanisms received from server, client
* calls sasl_client_start(). goto 4a
* 4. client calls sasl_client_step()
* [4a. If SASL_INTERACT, fill in prompts and goto 4
* -- doesn't happen if callbacks provided]
* 4b. If SASL error, goto 7 or 3
* 4c. If SASL_OK, continue or goto 6 if last server response was success
* 5. send message to server, wait for response
* 5a. On data or success with server response, goto 4
* 5b. On failure goto 7 or 3
* 5c. On success with no server response continue
* 6. continue with application protocol until connection closes
* call sasl_getprop/sasl_encode/sasl_decode() if using security layer
* 7. call sasl_dispose(), may return to step 2
* 8. call sasl_done() when program terminates
*
* Basic Server model:
* 1. call sasl_server_init() at startup to load plug-ins
* 2. On connection, call sasl_server_new()
* 3. call sasl_listmech() and send list to client]
* 4. after client AUTH command, call sasl_server_start(), goto 5a
* 5. call sasl_server_step()
* 5a. If SASL_CONTINUE, output to client, wait response, repeat 5
* 5b. If SASL error, then goto 7
* 5c. If SASL_OK, move on
* 6. continue with application protocol until connection closes
* call sasl_getprop to get username
* call sasl_getprop/sasl_encode/sasl_decode() if using security layer
* 7. call sasl_dispose(), may return to step 2
* 8. call sasl_done() when program terminates
*
*************************************************
* IMPORTANT NOTE: server realms / username syntax
*
* If a user name contains a "@", then the rightmost "@" in the user name
* separates the account name from the realm in which this account is
* located. A single server may support multiple realms. If the
* server knows the realm at connection creation time (e.g., a server
* with multiple IP addresses tightly binds one address to a specific
* realm) then that realm must be passed in the user_realm field of
* the sasl_server_new call. If user_realm is non-empty and an
* unqualified user name is supplied, then the canon_user facility is
* expected to append "@" and user_realm to the user name. The canon_user
* facility may treat other characters such as "%" as equivalent to "@".
*
* If the server forbids the use of "@" in user names for other
* purposes, this simplifies security validation.
*/
#ifndef SASL_H
#define SASL_H 1
/* Keep in sync with win32/common.mak */
#define SASL_VERSION_MAJOR 2
#define SASL_VERSION_MINOR 1
#define SASL_VERSION_STEP 26
/* A convenience macro: same as was defined in the OpenLDAP LDAPDB */
#define SASL_VERSION_FULL ((SASL_VERSION_MAJOR << 16) |\
(SASL_VERSION_MINOR << 8) | SASL_VERSION_STEP)
#include "prop.h"
/*************
* Basic API *
*************/
/* SASL result codes: */
#define SASL_CONTINUE 1 /* another step is needed in authentication */
#define SASL_OK 0 /* successful result */
#define SASL_FAIL -1 /* generic failure */
#define SASL_NOMEM -2 /* memory shortage failure */
#define SASL_BUFOVER -3 /* overflowed buffer */
#define SASL_NOMECH -4 /* mechanism not supported */
#define SASL_BADPROT -5 /* bad protocol / cancel */
#define SASL_NOTDONE -6 /* can't request info until later in exchange */
#define SASL_BADPARAM -7 /* invalid parameter supplied */
#define SASL_TRYAGAIN -8 /* transient failure (e.g., weak key) */
#define SASL_BADMAC -9 /* integrity check failed */
#define SASL_NOTINIT -12 /* SASL library not initialized */
/* -- client only codes -- */
#define SASL_INTERACT 2 /* needs user interaction */
#define SASL_BADSERV -10 /* server failed mutual authentication step */
#define SASL_WRONGMECH -11 /* mechanism doesn't support requested feature */
/* -- server only codes -- */
#define SASL_BADAUTH -13 /* authentication failure */
#define SASL_NOAUTHZ -14 /* authorization failure */
#define SASL_TOOWEAK -15 /* mechanism too weak for this user */
#define SASL_ENCRYPT -16 /* encryption needed to use mechanism */
#define SASL_TRANS -17 /* One time use of a plaintext password will
enable requested mechanism for user */
#define SASL_EXPIRED -18 /* passphrase expired, has to be reset */
#define SASL_DISABLED -19 /* account disabled */
#define SASL_NOUSER -20 /* user not found */
#define SASL_BADVERS -23 /* version mismatch with plug-in */
#define SASL_UNAVAIL -24 /* remote authentication server unavailable */
#define SASL_NOVERIFY -26 /* user exists, but no verifier for user */
/* -- codes for password setting -- */
#define SASL_PWLOCK -21 /* passphrase locked */
#define SASL_NOCHANGE -22 /* requested change was not needed */
#define SASL_WEAKPASS -27 /* passphrase is too weak for security policy */
#define SASL_NOUSERPASS -28 /* user supplied passwords not permitted */
#define SASL_NEED_OLD_PASSWD -29 /* sasl_setpass needs old password in order
to perform password change */
#define SASL_CONSTRAINT_VIOLAT -30 /* a property can't be stored,
because of some constrains/policy violation */
#define SASL_BADBINDING -32 /* channel binding failure */
/* max size of a sasl mechanism name */
#define SASL_MECHNAMEMAX 20
#ifdef _WIN32
/* Define to have the same layout as a WSABUF */
#ifndef STRUCT_IOVEC_DEFINED
#define STRUCT_IOVEC_DEFINED 1
struct iovec {
long iov_len;
char *iov_base;
};
#endif
#else
struct iovec; /* Defined in OS headers */
#endif
/* per-connection SASL negotiation state for client or server
*/
typedef struct sasl_conn sasl_conn_t;
/* Plain text password structure.
* len is the length of the password, data is the text.
*/
typedef struct sasl_secret {
unsigned long len;
unsigned char data[1]; /* variable sized */
} sasl_secret_t;
/* random data context structure
*/
typedef struct sasl_rand_s sasl_rand_t;
#ifdef __cplusplus
extern "C" {
#endif
/****************************
* Configure Basic Services *
****************************/
/* the following functions are used to adjust how allocation and mutexes work
* they must be called before all other SASL functions:
*/
#include <sys/types.h>
/* memory allocation functions which may optionally be replaced:
*/
typedef void *sasl_malloc_t(size_t);
typedef void *sasl_calloc_t(size_t, size_t);
typedef void *sasl_realloc_t(void *, size_t);
typedef void sasl_free_t(void *);
LIBSASL_API void sasl_set_alloc(sasl_malloc_t *,
sasl_calloc_t *,
sasl_realloc_t *,
sasl_free_t *);
/* mutex functions which may optionally be replaced:
* sasl_mutex_alloc allocates a mutex structure
* sasl_mutex_lock blocks until mutex locked
* returns -1 on deadlock or parameter error
* returns 0 on success
* sasl_mutex_unlock unlocks mutex if it's locked
* returns -1 if not locked or parameter error
* returns 0 on success
* sasl_mutex_free frees a mutex structure
*/
typedef void *sasl_mutex_alloc_t(void);
typedef int sasl_mutex_lock_t(void *mutex);
typedef int sasl_mutex_unlock_t(void *mutex);
typedef void sasl_mutex_free_t(void *mutex);
LIBSASL_API void sasl_set_mutex(sasl_mutex_alloc_t *, sasl_mutex_lock_t *,
sasl_mutex_unlock_t *, sasl_mutex_free_t *);
/*****************************
* Security preference types *
*****************************/
/* security layer strength factor -- an unsigned integer usable by the caller
* to specify approximate security layer strength desired. Roughly
* correlated to effective key length for encryption.
* 0 = no protection
* 1 = integrity protection only
* 40 = 40-bit DES or 40-bit RC2/RC4
* 56 = DES
* 112 = triple-DES
* 128 = 128-bit RC2/RC4/BLOWFISH
* 256 = baseline AES
*/
typedef unsigned sasl_ssf_t;
/* usage flags provided to sasl_server_new and sasl_client_new:
*/
#define SASL_SUCCESS_DATA 0x0004 /* server supports data on success */
#define SASL_NEED_PROXY 0x0008 /* require a mech that allows proxying */
#define SASL_NEED_HTTP 0x0010 /* require a mech that can do HTTP auth */
/***************************
* Security Property Types *
***************************/
/* Structure specifying the client or server's security policy
* and optional additional properties.
*/
/* These are the various security flags apps can specify. */
/* NOPLAINTEXT -- don't permit mechanisms susceptible to simple
* passive attack (e.g., PLAIN, LOGIN)
* NOACTIVE -- protection from active (non-dictionary) attacks
* during authentication exchange.
* Authenticates server.
* NODICTIONARY -- don't permit mechanisms susceptible to passive
* dictionary attack
* FORWARD_SECRECY -- require forward secrecy between sessions
* (breaking one won't help break next)
* NOANONYMOUS -- don't permit mechanisms that allow anonymous login
* PASS_CREDENTIALS -- require mechanisms which pass client
* credentials, and allow mechanisms which can pass
* credentials to do so
* MUTUAL_AUTH -- require mechanisms which provide mutual
* authentication
*/
#define SASL_SEC_NOPLAINTEXT 0x0001
#define SASL_SEC_NOACTIVE 0x0002
#define SASL_SEC_NODICTIONARY 0x0004
#define SASL_SEC_FORWARD_SECRECY 0x0008
#define SASL_SEC_NOANONYMOUS 0x0010
#define SASL_SEC_PASS_CREDENTIALS 0x0020
#define SASL_SEC_MUTUAL_AUTH 0x0040
#define SASL_SEC_MAXIMUM 0x00FF
typedef struct sasl_security_properties
{
/* security strength factor
* min_ssf = minimum acceptable final level
* max_ssf = maximum acceptable final level
*/
sasl_ssf_t min_ssf;
sasl_ssf_t max_ssf;
/* Maximum security layer receive buffer size.
* 0=security layer not supported
*/
unsigned maxbufsize;
/* bitfield for attacks to protect against */
unsigned security_flags;
/* NULL terminated array of additional property names, values */
const char **property_names;
const char **property_values;
} sasl_security_properties_t;
/******************
* Callback types *
******************/
/*
* Extensible type for a client/server callbacks
* id -- identifies callback type
* proc -- procedure call arguments vary based on id
* context -- context passed to procedure
*/
/* Note that any memory that is allocated by the callback needs to be
* freed by the application, be it via function call or interaction.
*
* It may be freed after sasl_*_step returns SASL_OK. if the mechanism
* requires this information to persist (for a security layer, for example)
* it must maintain a private copy.
*/
typedef struct sasl_callback {
/* Identifies the type of the callback function.
* Mechanisms must ignore callbacks with id's they don't recognize.
*/
unsigned long id;
int (*proc)(void); /* Callback function. Types of arguments vary by 'id' */
void *context;
} sasl_callback_t;
/* callback ids & functions:
*/
#define SASL_CB_LIST_END 0 /* end of list */
/* option reading callback -- this allows a SASL configuration to be
* encapsulated in the caller's configuration system. Some implementations
* may use default config file(s) if this is omitted. Configuration items
* may be plugin-specific and are arbitrary strings.
*
* inputs:
* context -- option context from callback record
* plugin_name -- name of plugin (NULL = general SASL option)
* option -- name of option
* output:
* result -- set to result which persists until next getopt in
* same thread, unchanged if option not found
* len -- length of result (may be NULL)
* returns:
* SASL_OK -- no error
* SASL_FAIL -- error
*/
typedef int sasl_getopt_t(void *context, const char *plugin_name,
const char *option,
const char **result, unsigned *len);
#define SASL_CB_GETOPT 1
/* Logging levels for use with the logging callback function. */
#define SASL_LOG_NONE 0 /* don't log anything */
#define SASL_LOG_ERR 1 /* log unusual errors (default) */
#define SASL_LOG_FAIL 2 /* log all authentication failures */
#define SASL_LOG_WARN 3 /* log non-fatal warnings */
#define SASL_LOG_NOTE 4 /* more verbose than LOG_WARN */
#define SASL_LOG_DEBUG 5 /* more verbose than LOG_NOTE */
#define SASL_LOG_TRACE 6 /* traces of internal protocols */
#define SASL_LOG_PASS 7 /* traces of internal protocols, including
* passwords */
/* logging callback -- this allows plugins and the middleware to
* log operations they perform.
* inputs:
* context -- logging context from the callback record
* level -- logging level; see above
* message -- message to log
* returns:
* SASL_OK -- no error
* SASL_FAIL -- error
*/
typedef int sasl_log_t(void *context,
int level,
const char *message);
#define SASL_CB_LOG 2
/* getpath callback -- this allows applications to specify the
* colon-separated path to search for plugins (by default,
* taken from an implementation-specific location).
* inputs:
* context -- getpath context from the callback record
* outputs:
* path -- colon seperated path
* returns:
* SASL_OK -- no error
* SASL_FAIL -- error
*/
typedef int sasl_getpath_t(void *context,
const char **path);
#define SASL_CB_GETPATH 3
/* verify file callback -- this allows applications to check if they
* want SASL to use files, file by file. This is intended to allow
* applications to sanity check the environment to make sure plugins
* or the configuration file can't be written to, etc.
* inputs:
* context -- verifypath context from the callback record
* file -- full path to file to verify
* type -- type of file to verify (see below)
* returns:
* SASL_OK -- no error (file can safely be used)
* SASL_CONTINUE -- continue WITHOUT using this file
* SASL_FAIL -- error
*/
/* these are the types of files libsasl will ask about */
typedef enum {
SASL_VRFY_PLUGIN=0, /* a DLL/shared library plug-in */
SASL_VRFY_CONF=1, /* a configuration file */
SASL_VRFY_PASSWD=2, /* a password storage file/db */
SASL_VRFY_OTHER=3 /* some other file */
} sasl_verify_type_t;
typedef int sasl_verifyfile_t(void *context,
const char *file, sasl_verify_type_t type);
#define SASL_CB_VERIFYFILE 4
/* getconfpath callback -- this allows applications to specify the
* colon-separated path to search for config files (by default,
* taken from the SASL_CONF_PATH environment variable).
* inputs:
* context -- getconfpath context from the callback record
* outputs:
* path -- colon seperated path (allocated on the heap; the
* library will free it using the sasl_free_t *
* passed to sasl_set_callback, or the standard free()
* library call).
* returns:
* SASL_OK -- no error
* SASL_FAIL -- error
*/
typedef int sasl_getconfpath_t(void *context,
char **path);
#define SASL_CB_GETCONFPATH 5
/* client/user interaction callbacks:
*/
/* Simple prompt -- result must persist until next call to getsimple on
* same connection or until connection context is disposed
* inputs:
* context -- context from callback structure
* id -- callback id
* outputs:
* result -- set to NUL terminated string
* NULL = user cancel
* len -- length of result
* returns SASL_OK
*/
typedef int sasl_getsimple_t(void *context, int id,
const char **result, unsigned *len);
#define SASL_CB_USER 0x4001 /* client user identity to login as */
#define SASL_CB_AUTHNAME 0x4002 /* client authentication name */
#define SASL_CB_LANGUAGE 0x4003 /* comma separated list of RFC 1766
* language codes in order of preference
* to be used to localize client prompts
* or server error codes */
#define SASL_CB_CNONCE 0x4007 /* caller supplies client-nonce
* primarily for testing purposes */
/* get a sasl_secret_t (plaintext password with length)
* inputs:
* conn -- connection context
* context -- context from callback structure
* id -- callback id
* outputs:
* psecret -- set to NULL to cancel
* set to password structure which must persist until
* next call to getsecret in same connection, but middleware
* will erase password data when it's done with it.
* returns SASL_OK
*/
typedef int sasl_getsecret_t(sasl_conn_t *conn, void *context, int id,
sasl_secret_t **psecret);
#define SASL_CB_PASS 0x4004 /* client passphrase-based secret */
/* prompt for input in response to a challenge.
* input:
* context -- context from callback structure
* id -- callback id
* challenge -- server challenge
* output:
* result -- NUL terminated result, NULL = user cancel
* len -- length of result
* returns SASL_OK
*/
typedef int sasl_chalprompt_t(void *context, int id,
const char *challenge,
const char *prompt, const char *defresult,
const char **result, unsigned *len);
#define SASL_CB_ECHOPROMPT 0x4005 /* challenge and client enterred result */
#define SASL_CB_NOECHOPROMPT 0x4006 /* challenge and client enterred result */
/* prompt (or autoselect) the realm to do authentication in.
* may get a list of valid realms.
* input:
* context -- context from callback structure
* id -- callback id
* availrealms -- available realms; string list; NULL terminated
* list may be empty.
* output:
* result -- NUL terminated realm; NULL is equivalent to ""
* returns SASL_OK
* result must persist until the next callback
*/
typedef int sasl_getrealm_t(void *context, int id,
const char **availrealms,
const char **result);
#define SASL_CB_GETREALM (0x4008) /* realm to attempt authentication in */
/* server callbacks:
*/
/* improved callback to verify authorization;
* canonicalization now handled elsewhere
* conn -- connection context
* requested_user -- the identity/username to authorize (NUL terminated)
* rlen -- length of requested_user
* auth_identity -- the identity associated with the secret (NUL terminated)
* alen -- length of auth_identity
* default_realm -- default user realm, as passed to sasl_server_new if
* urlen -- length of default realm
* propctx -- auxiliary properties
* returns SASL_OK on success,
* SASL_NOAUTHZ or other SASL response on failure
*/
typedef int sasl_authorize_t(sasl_conn_t *conn,
void *context,
const char *requested_user, unsigned rlen,
const char *auth_identity, unsigned alen,
const char *def_realm, unsigned urlen,
struct propctx *propctx);
#define SASL_CB_PROXY_POLICY 0x8001
/* functions for "userdb" based plugins to call to get/set passwords.
* the location for the passwords is determined by the caller or middleware.
* plug-ins may get passwords from other locations.
*/
/* callback to verify a plaintext password against the caller-supplied
* user database. This is necessary to allow additional <method>s for
* encoding of the userPassword property.
* user -- NUL terminated user name with user@realm syntax
* pass -- password to check (may not be NUL terminated)
* passlen -- length of password to check
* propctx -- auxiliary properties for user
*/
typedef int sasl_server_userdb_checkpass_t(sasl_conn_t *conn,
void *context,
const char *user,
const char *pass,
unsigned passlen,
struct propctx *propctx);
#define SASL_CB_SERVER_USERDB_CHECKPASS (0x8005)
/* callback to store/change a plaintext password in the user database
* user -- NUL terminated user name with user@realm syntax
* pass -- password to store (may not be NUL terminated)
* passlen -- length of password to store
* propctx -- auxiliary properties (not stored)
* flags -- see SASL_SET_* flags below (SASL_SET_CREATE optional)
*/
typedef int sasl_server_userdb_setpass_t(sasl_conn_t *conn,
void *context,
const char *user,
const char *pass,
unsigned passlen,
struct propctx *propctx,
unsigned flags);
#define SASL_CB_SERVER_USERDB_SETPASS (0x8006)
/* callback for a server-supplied user canonicalization function.
*
* This function is called directly after the mechanism has the
* authentication and authorization IDs. It is called before any
* User Canonicalization plugin is called. It has the responsibility
* of copying its output into the provided output buffers.
*
* in, inlen -- user name to canonicalize, may not be NUL terminated
* may be same buffer as out
* flags -- not currently used, supplied by auth mechanism
* user_realm -- the user realm (may be NULL in case of client)
* out -- buffer to copy user name
* out_max -- max length of user name
* out_len -- set to length of user name
*
* returns
* SASL_OK on success
* SASL_BADPROT username contains invalid character
*/
/* User Canonicalization Function Flags */
#define SASL_CU_NONE 0x00 /* Not a valid flag to pass */
/* One of the following two is required */
#define SASL_CU_AUTHID 0x01
#define SASL_CU_AUTHZID 0x02
/* Combine the following with SASL_CU_AUTHID, if you don't want
to fail if auxprop returned SASL_NOUSER/SASL_NOMECH.
This flag has no effect on SASL_CU_AUTHZID. */
#define SASL_CU_EXTERNALLY_VERIFIED 0x04
#define SASL_CU_OVERRIDE 0x08 /* mapped to SASL_AUXPROP_OVERRIDE */
/* The following CU flags are passed "as is" down to auxprop lookup */
#define SASL_CU_ASIS_MASK 0xFFF0
/* NOTE: Keep in sync with SASL_AUXPROP_<XXX> flags */
#define SASL_CU_VERIFY_AGAINST_HASH 0x10
typedef int sasl_canon_user_t(sasl_conn_t *conn,
void *context,
const char *in, unsigned inlen,
unsigned flags,
const char *user_realm,
char *out,
unsigned out_max, unsigned *out_len);
#define SASL_CB_CANON_USER (0x8007)
/**********************************
* Common Client/server functions *
**********************************/
/* Types of paths to set (see sasl_set_path below). */
#define SASL_PATH_TYPE_PLUGIN 0
#define SASL_PATH_TYPE_CONFIG 1
/* a simpler way to set plugin path or configuration file path
* without the need to set sasl_getpath_t callback.
*
* This function can be called before sasl_server_init/sasl_client_init.
*/
LIBSASL_API int sasl_set_path (int path_type, char * path);
/* get sasl library version information
* implementation is a vendor-defined string
* version is a vender-defined representation of the version #.
*
* This function is being deprecated in favor of sasl_version_info. */
LIBSASL_API void sasl_version(const char **implementation,
int *version);
/* Extended version of sasl_version().
*
* This function is to be used
* for library version display and logging
* for bug workarounds in old library versions
*
* The sasl_version_info is not to be used for API feature detection.
*
* All parameters are optional. If NULL is specified, the value is not returned.
*/
LIBSASL_API void sasl_version_info (const char **implementation,
const char **version_string,
int *version_major,
int *version_minor,
int *version_step,
int *version_patch);
/* dispose of all SASL plugins. Connection
* states have to be disposed of before calling this.
*
* This function is DEPRECATED in favour of sasl_server_done/
* sasl_client_done.
*/
LIBSASL_API void sasl_done(void);
/* dispose of all SASL plugins. Connection
* states have to be disposed of before calling this.
* This function should be called instead of sasl_done(),
whenever possible.
*/
LIBSASL_API int sasl_server_done(void);
/* dispose of all SASL plugins. Connection
* states have to be disposed of before calling this.
* This function should be called instead of sasl_done(),
whenever possible.
*/
LIBSASL_API int sasl_client_done(void);
/* dispose connection state, sets it to NULL
* checks for pointer to NULL
*/
LIBSASL_API void sasl_dispose(sasl_conn_t **pconn);
/* translate an error number into a string
* input:
* saslerr -- the error number
* langlist -- comma separated list of RFC 1766 languages (may be NULL)
* results:
* outlang -- the language actually used (may be NULL if don't care)
* returns:
* the error message in UTF-8 (only the US-ASCII subset if langlist is NULL)
*/
LIBSASL_API const char *sasl_errstring(int saslerr,
const char *langlist,
const char **outlang);
/* get detail about the last error that occurred on a connection
* text is sanitized so it's suitable to send over the wire
* (e.g., no distinction between SASL_BADAUTH and SASL_NOUSER)
* input:
* conn -- mandatory connection context
* returns:
* the error message in UTF-8 (only the US-ASCII subset permitted if no
* SASL_CB_LANGUAGE callback is present)
*/
LIBSASL_API const char *sasl_errdetail(sasl_conn_t *conn);
/* set the error string which will be returned by sasl_errdetail() using
* syslog()-style formatting (e.g. printf-style with %m as most recent
* errno error)
*
* primarily for use by server callbacks such as the sasl_authorize_t
* callback and internally to plug-ins
*
* This will also trigger a call to the SASL logging callback (if any)
* with a level of SASL_LOG_FAIL unless the SASL_NOLOG flag is set.
*
* Messages should be sensitive to the current language setting. If there
* is no SASL_CB_LANGUAGE callback messages MUST be US-ASCII otherwise UTF-8
* is used and use of RFC 2482 for mixed-language text is encouraged.
*
* if conn is NULL, function does nothing
*/
LIBSASL_API void sasl_seterror(sasl_conn_t *conn, unsigned flags,
const char *fmt, ...);
#define SASL_NOLOG 0x01
/* get property from SASL connection state
* propnum -- property number
* pvalue -- pointer to value
* returns:
* SASL_OK -- no error
* SASL_NOTDONE -- property not available yet
* SASL_BADPARAM -- bad property number
*/
LIBSASL_API int sasl_getprop(sasl_conn_t *conn, int propnum,
const void **pvalue);
#define SASL_USERNAME 0 /* pointer to NUL terminated user name */
#define SASL_SSF 1 /* security layer security strength factor,
* if 0, call to sasl_encode, sasl_decode
* unnecessary */
#define SASL_MAXOUTBUF 2 /* security layer max output buf unsigned */
#define SASL_DEFUSERREALM 3 /* default realm passed to server_new */
/* or set with setprop */
#define SASL_GETOPTCTX 4 /* context for getopt callback */
#define SASL_CALLBACK 7 /* current callback function list */
#define SASL_IPLOCALPORT 8 /* iplocalport string passed to server_new */
#define SASL_IPREMOTEPORT 9 /* ipremoteport string passed to server_new */
/* This returns a string which is either empty or has an error message
* from sasl_seterror (e.g., from a plug-in or callback). It differs
* from the result of sasl_errdetail() which also takes into account the
* last return status code.
*/
#define SASL_PLUGERR 10
/* a handle to any delegated credentials or NULL if none is present
* is returned by the mechanism. The user will probably need to know
* which mechanism was used to actually known how to make use of them
* currently only implemented for the gssapi mechanism */
#define SASL_DELEGATEDCREDS 11
#define SASL_SERVICE 12 /* service passed to sasl_*_new */
#define SASL_SERVERFQDN 13 /* serverFQDN passed to sasl_*_new */
#define SASL_AUTHSOURCE 14 /* name of auth source last used, useful
* for failed authentication tracking */
#define SASL_MECHNAME 15 /* active mechanism name, if any */
#define SASL_AUTHUSER 16 /* authentication/admin user */
#define SASL_APPNAME 17 /* application name (used for logging/
configuration), same as appname parameter
to sasl_server_init */
/* GSS-API credential handle for sasl_client_step() or sasl_server_step().
* The application is responsible for releasing this credential handle. */
#define SASL_GSS_CREDS 18
/* GSS name (gss_name_t) of the peer, as output by gss_inquire_context()
* or gss_accept_sec_context().
* On server end this is similar to SASL_USERNAME, but the gss_name_t
* structure can contain additional attributes associated with the peer.
*/
#define SASL_GSS_PEER_NAME 19
/* Local GSS name (gss_name_t) as output by gss_inquire_context(). This
* is particularly useful for servers that respond to multiple names. */
#define SASL_GSS_LOCAL_NAME 20
/* Channel binding information. Memory is managed by the caller. */
typedef struct sasl_channel_binding {
const char *name;
int critical;
unsigned long len;
const unsigned char *data;
} sasl_channel_binding_t;
#define SASL_CHANNEL_BINDING 21
/* HTTP Request (RFC 2616) - ONLY used for HTTP Digest Auth (RFC 2617) */
typedef struct sasl_http_request {
const char *method; /* HTTP Method */
const char *uri; /* request-URI */
const unsigned char *entity; /* entity-body */
unsigned long elen; /* entity-body length */
unsigned non_persist; /* Is it a non-persistent connection? */
} sasl_http_request_t;
#define SASL_HTTP_REQUEST 22
/* set property in SASL connection state
* returns:
* SASL_OK -- value set
* SASL_BADPARAM -- invalid property or value
*/
LIBSASL_API int sasl_setprop(sasl_conn_t *conn,
int propnum,
const void *value);
#define SASL_SSF_EXTERNAL 100 /* external SSF active (sasl_ssf_t *) */
#define SASL_SEC_PROPS 101 /* sasl_security_properties_t */
#define SASL_AUTH_EXTERNAL 102 /* external authentication ID (const char *) */
/* If the SASL_AUTH_EXTERNAL value is non-NULL, then a special version of the
* EXTERNAL mechanism is enabled (one for server-embedded EXTERNAL mechanisms).
* Otherwise, the EXTERNAL mechanism will be absent unless a plug-in
* including EXTERNAL is present.
*/
/* do precalculations during an idle period or network round trip
* may pass NULL to precompute for some mechanisms prior to connect
* returns 1 if action taken, 0 if no action taken
*/
LIBSASL_API int sasl_idle(sasl_conn_t *conn);
/**************
* Client API *
**************/
/* list of client interactions with user for caller to fill in
*/
typedef struct sasl_interact {
unsigned long id; /* same as client/user callback ID */
const char *challenge; /* presented to user (e.g. OTP challenge) */
const char *prompt; /* presented to user (e.g. "Username: ") */
const char *defresult; /* default result string */
const void *result; /* set to point to result */
unsigned len; /* set to length of result */
} sasl_interact_t;
/* initialize the SASL client drivers
* callbacks -- base callbacks for all client connections;
* must include getopt callback
* returns:
* SASL_OK -- Success
* SASL_NOMEM -- Not enough memory
* SASL_BADVERS -- Mechanism version mismatch
* SASL_BADPARAM -- missing getopt callback or error in config file
* SASL_NOMECH -- No mechanisms available
* ...
*/
LIBSASL_API int sasl_client_init(const sasl_callback_t *callbacks);
/* initialize a client exchange based on the specified mechanism
* service -- registered name of the service using SASL (e.g. "imap")
* serverFQDN -- the fully qualified domain name of the server
* iplocalport -- client IPv4/IPv6 domain literal string with port
* (if NULL, then mechanisms requiring IPaddr are disabled)
* ipremoteport -- server IPv4/IPv6 domain literal string with port
* (if NULL, then mechanisms requiring IPaddr are disabled)
* prompt_supp -- list of client interactions supported
* may also include sasl_getopt_t context & call
* NULL prompt_supp = user/pass via SASL_INTERACT only
* NULL proc = interaction supported via SASL_INTERACT
* flags -- server usage flags (see above)
* in/out:
* pconn -- connection negotiation structure
* pointer to NULL => allocate new
*
* Returns:
* SASL_OK -- success
* SASL_NOMECH -- no mechanism meets requested properties
* SASL_NOMEM -- not enough memory
*/
LIBSASL_API int sasl_client_new(const char *service,
const char *serverFQDN,
const char *iplocalport,
const char *ipremoteport,
const sasl_callback_t *prompt_supp,
unsigned flags,
sasl_conn_t **pconn);
/* select a mechanism for a connection
* mechlist -- mechanisms server has available (punctuation ignored)
* if NULL, then discard cached info and retry last mech
* output:
* prompt_need -- on SASL_INTERACT, list of prompts needed to continue
* may be NULL if callbacks provided
* clientout -- the initial client response to send to the server
* will be valid until next call to client_start/client_step
* NULL if mech doesn't include initial client challenge
* mech -- set to mechansm name of selected mechanism (may be NULL)
*
* Returns:
* SASL_OK -- success
* SASL_NOMEM -- not enough memory
* SASL_NOMECH -- no mechanism meets requested properties
* SASL_INTERACT -- user interaction needed to fill in prompt_need list
*/
LIBSASL_API int sasl_client_start(sasl_conn_t *conn,
const char *mechlist,
sasl_interact_t **prompt_need,
const char **clientout,
unsigned *clientoutlen,
const char **mech);
/* do a single authentication step.
* serverin -- the server message received by the client, MUST have a NUL
* sentinel, not counted by serverinlen
* output:
* prompt_need -- on SASL_INTERACT, list of prompts needed to continue
* clientout -- the client response to send to the server
* will be valid until next call to client_start/client_step
*
* returns:
* SASL_OK -- success
* SASL_INTERACT -- user interaction needed to fill in prompt_need list
* SASL_BADPROT -- server protocol incorrect/cancelled
* SASL_BADSERV -- server failed mutual auth
*/
LIBSASL_API int sasl_client_step(sasl_conn_t *conn,
const char *serverin,
unsigned serverinlen,
sasl_interact_t **prompt_need,
const char **clientout,
unsigned *clientoutlen);
/**************
* Server API *
**************/
/* initialize server drivers, done once per process
* callbacks -- callbacks for all server connections; must include
* getopt callback
* appname -- name of calling application (for lower level logging)
* results:
* state -- server state
* returns:
* SASL_OK -- success
* SASL_BADPARAM -- error in config file
* SASL_NOMEM -- memory failure
* SASL_BADVERS -- Mechanism version mismatch
*/
LIBSASL_API int sasl_server_init(const sasl_callback_t *callbacks,
const char *appname);
/* IP/port syntax:
* a.b.c.d;p where a-d are 0-255 and p is 0-65535 port number.
* e:f:g:h:i:j:k:l;p where e-l are 0000-ffff lower-case hexidecimal
* e:f:g:h:i:j:a.b.c.d;p alternate syntax for previous
*
* Note that one or more "0" fields in f-k can be replaced with "::"
* Thus: e:f:0000:0000:0000:j:k:l;p
* can be abbreviated: e:f::j:k:l;p
*
* A buffer of size 52 is adequate for the longest format with NUL terminator.
*/
/* create context for a single SASL connection
* service -- registered name of the service using SASL (e.g. "imap")
* serverFQDN -- Fully qualified domain name of server. NULL means use
* gethostname() or equivalent.
* Useful for multi-homed servers.
* user_realm -- permits multiple user realms on server, NULL = default
* iplocalport -- server IPv4/IPv6 domain literal string with port
* (if NULL, then mechanisms requiring IPaddr are disabled)
* ipremoteport -- client IPv4/IPv6 domain literal string with port
* (if NULL, then mechanisms requiring IPaddr are disabled)
* callbacks -- callbacks (e.g., authorization, lang, new getopt context)
* flags -- usage flags (see above)
* returns:
* pconn -- new connection context
*
* returns:
* SASL_OK -- success
* SASL_NOMEM -- not enough memory
*/
LIBSASL_API int sasl_server_new(const char *service,
const char *serverFQDN,
const char *user_realm,
const char *iplocalport,
const char *ipremoteport,
const sasl_callback_t *callbacks,
unsigned flags,
sasl_conn_t **pconn);
/* Return an array of NUL-terminated strings, terminated by a NULL pointer,
* which lists all possible mechanisms that the library can supply
*
* Returns NULL on failure. */
LIBSASL_API const char ** sasl_global_listmech(void);
/* This returns a list of mechanisms in a NUL-terminated string
* conn -- the connection to list mechanisms for (either client
* or server)
* user -- restricts mechanisms to those available to that user
* (may be NULL, not used for client case)
* prefix -- appended to beginning of result
* sep -- appended between mechanisms
* suffix -- appended to end of result
* results:
* result -- NUL terminated result which persists until next
* call to sasl_listmech for this sasl_conn_t
* plen -- gets length of result (excluding NUL), may be NULL
* pcount -- gets number of mechanisms, may be NULL
*
* returns:
* SASL_OK -- success
* SASL_NOMEM -- not enough memory
* SASL_NOMECH -- no enabled mechanisms
*/
LIBSASL_API int sasl_listmech(sasl_conn_t *conn,
const char *user,
const char *prefix,
const char *sep,
const char *suffix,
const char **result,
unsigned *plen,
int *pcount);
/* start a mechanism exchange within a connection context
* mech -- the mechanism name client requested
* clientin -- client initial response (NUL terminated), NULL if empty
* clientinlen -- length of initial response
* serverout -- initial server challenge, NULL if done
* (library handles freeing this string)
* serveroutlen -- length of initial server challenge
* output:
* pconn -- the connection negotiation state on success
*
* Same returns as sasl_server_step() or
* SASL_NOMECH if mechanism not available.
*/
LIBSASL_API int sasl_server_start(sasl_conn_t *conn,
const char *mech,
const char *clientin,
unsigned clientinlen,
const char **serverout,
unsigned *serveroutlen);
/* perform one step of the SASL exchange
* inputlen & input -- client data
* NULL on first step if no optional client step
* outputlen & output -- set to the server data to transmit
* to the client in the next step
* (library handles freeing this)
*
* returns:
* SASL_OK -- exchange is complete.
* SASL_CONTINUE -- indicates another step is necessary.
* SASL_TRANS -- entry for user exists, but not for mechanism
* and transition is possible
* SASL_BADPARAM -- service name needed
* SASL_BADPROT -- invalid input from client
* ...
*/
LIBSASL_API int sasl_server_step(sasl_conn_t *conn,
const char *clientin,
unsigned clientinlen,
const char **serverout,
unsigned *serveroutlen);
/* check if an apop exchange is valid
* (note this is an optional part of the SASL API)
* if challenge is NULL, just check if APOP is enabled
* inputs:
* challenge -- challenge which was sent to client
* challen -- length of challenge, 0 = strlen(challenge)
* response -- client response, "<user> <digest>" (RFC 1939)
* resplen -- length of response, 0 = strlen(response)
* returns
* SASL_OK -- success
* SASL_BADAUTH -- authentication failed
* SASL_BADPARAM -- missing challenge
* SASL_BADPROT -- protocol error (e.g., response in wrong format)
* SASL_NOVERIFY -- user found, but no verifier
* SASL_NOMECH -- mechanism not supported
* SASL_NOUSER -- user not found
*/
LIBSASL_API int sasl_checkapop(sasl_conn_t *conn,
const char *challenge, unsigned challen,
const char *response, unsigned resplen);
/* check if a plaintext password is valid
* if user is NULL, check if plaintext passwords are enabled
* inputs:
* user -- user to query in current user_domain
* userlen -- length of username, 0 = strlen(user)
* pass -- plaintext password to check
* passlen -- length of password, 0 = strlen(pass)
* returns
* SASL_OK -- success
* SASL_NOMECH -- mechanism not supported
* SASL_NOVERIFY -- user found, but no verifier
* SASL_NOUSER -- user not found
*/
LIBSASL_API int sasl_checkpass(sasl_conn_t *conn,
const char *user, unsigned userlen,
const char *pass, unsigned passlen);
/* check if a user exists on server
* conn -- connection context
* service -- registered name of the service using SASL (e.g. "imap")
* user_realm -- permits multiple user realms on server, NULL = default
* user -- NUL terminated user name
*
* returns:
* SASL_OK -- success
* SASL_DISABLED -- account disabled
* SASL_NOUSER -- user not found
* SASL_NOVERIFY -- user found, but no usable mechanism
* SASL_NOMECH -- no mechanisms enabled
* SASL_UNAVAIL -- remote authentication server unavailable, try again later
*/
LIBSASL_API int sasl_user_exists(sasl_conn_t *conn,
const char *service,
const char *user_realm,
const char *user);
/* set the password for a user
* conn -- SASL connection
* user -- user name
* pass -- plaintext password, may be NULL to remove user
* passlen -- length of password, 0 = strlen(pass)
* oldpass -- NULL will sometimes work
* oldpasslen -- length of password, 0 = strlen(oldpass)
* flags -- see flags below
*
* returns:
* SASL_NOCHANGE -- proper entry already exists
* SASL_NOMECH -- no authdb supports password setting as configured
* SASL_NOVERIFY -- user exists, but no settable password present
* SASL_DISABLED -- account disabled
* SASL_PWLOCK -- password locked
* SASL_WEAKPASS -- password too weak for security policy
* SASL_NOUSERPASS -- user-supplied passwords not permitted
* SASL_FAIL -- OS error
* SASL_BADPARAM -- password too long
* SASL_OK -- successful
*/
LIBSASL_API int sasl_setpass(sasl_conn_t *conn,
const char *user,
const char *pass, unsigned passlen,
const char *oldpass, unsigned oldpasslen,
unsigned flags);
#define SASL_SET_CREATE 0x01 /* create a new entry for user */
#define SASL_SET_DISABLE 0x02 /* disable user account */
#define SASL_SET_NOPLAIN 0x04 /* do not store secret in plain text */
#define SASL_SET_CURMECH_ONLY 0x08 /* set the mechanism specific password only.
fail if no current mechanism */
/*********************************************************
* Auxiliary Property Support -- added by cjn 1999-09-29 *
*********************************************************/
#define SASL_AUX_END NULL /* last auxiliary property */
#define SASL_AUX_ALL "*" /* A special flag to signal user deletion */
/* traditional Posix items (should be implemented on Posix systems) */
#define SASL_AUX_PASSWORD_PROP "userPassword" /* User Password */
#define SASL_AUX_PASSWORD "*" SASL_AUX_PASSWORD_PROP /* User Password (of authid) */
#define SASL_AUX_UIDNUM "uidNumber" /* UID number for the user */
#define SASL_AUX_GIDNUM "gidNumber" /* GID for the user */
#define SASL_AUX_FULLNAME "gecos" /* full name of the user, unix-style */
#define SASL_AUX_HOMEDIR "homeDirectory" /* home directory for user */
#define SASL_AUX_SHELL "loginShell" /* login shell for the user */
/* optional additional items (not necessarily implemented) */
/* single preferred mail address for user canonically-quoted
* RFC821/822 syntax */
#define SASL_AUX_MAILADDR "mail"
/* path to unix-style mailbox for user */
#define SASL_AUX_UNIXMBX "mailMessageStore"
/* SMTP mail channel name to use if user authenticates successfully */
#define SASL_AUX_MAILCHAN "mailSMTPSubmitChannel"
/* Request a set of auxiliary properties
* conn connection context
* propnames list of auxiliary property names to request ending with
* NULL.
*
* Subsequent calls will add items to the request list. Call with NULL
* to clear the request list.
*
* errors
* SASL_OK -- success
* SASL_BADPARAM -- bad count/conn parameter
* SASL_NOMEM -- out of memory
*/
LIBSASL_API int sasl_auxprop_request(sasl_conn_t *conn,
const char **propnames);
/* Returns current auxiliary property context.
* Use functions in prop.h to access content
*
* if authentication hasn't completed, property values may be empty/NULL
*
* properties not recognized by active plug-ins will be left empty/NULL
*
* returns NULL if conn is invalid.
*/
LIBSASL_API struct propctx *sasl_auxprop_getctx(sasl_conn_t *conn);
/* Store the set of auxiliary properties for the given user.
* Use functions in prop.h to set the content.
*
* conn connection context
* ctx property context from prop_new()/prop_request()/prop_set()
* user NUL terminated user
*
* Call with NULL 'ctx' to see if the backend allows storing properties.
*
* errors
* SASL_OK -- success
* SASL_NOMECH -- can not store some/all properties
* SASL_BADPARAM -- bad conn/ctx/user parameter
* SASL_NOMEM -- out of memory
* SASL_FAIL -- failed to store
*/
LIBSASL_API int sasl_auxprop_store(sasl_conn_t *conn,
struct propctx *ctx, const char *user);
/**********************
* security layer API *
**********************/
/* encode a block of data for transmission using security layer,
* returning the input buffer if there is no security layer.
* output is only valid until next call to sasl_encode or sasl_encodev
* returns:
* SASL_OK -- success (returns input if no layer negotiated)
* SASL_NOTDONE -- security layer negotiation not finished
* SASL_BADPARAM -- inputlen is greater than the SASL_MAXOUTBUF
*/
LIBSASL_API int sasl_encode(sasl_conn_t *conn,
const char *input, unsigned inputlen,
const char **output, unsigned *outputlen);
/* encode a block of data for transmission using security layer
* output is only valid until next call to sasl_encode or sasl_encodev
* returns:
* SASL_OK -- success (returns input if no layer negotiated)
* SASL_NOTDONE -- security layer negotiation not finished
* SASL_BADPARAM -- input length is greater than the SASL_MAXOUTBUF
* or no security layer
*/
LIBSASL_API int sasl_encodev(sasl_conn_t *conn,
const struct iovec *invec, unsigned numiov,
const char **output, unsigned *outputlen);
/* decode a block of data received using security layer
* returning the input buffer if there is no security layer.
* output is only valid until next call to sasl_decode
*
* if outputlen is 0 on return, than the value of output is undefined.
*
* returns:
* SASL_OK -- success (returns input if no layer negotiated)
* SASL_NOTDONE -- security layer negotiation not finished
* SASL_BADMAC -- bad message integrity check
*/
LIBSASL_API int sasl_decode(sasl_conn_t *conn,
const char *input, unsigned inputlen,
const char **output, unsigned *outputlen);
#ifdef __cplusplus
}
#endif
#endif /* SASL_H */
|