| 1 | /* |
| 2 | * authldap.c - |
| 3 | * |
| 4 | * courier-imap - |
| 5 | * |
| 6 | * Copyright 1999 Luc Saillard <luc.saillard@alcove.fr>. |
| 7 | * |
| 8 | * This module use a server LDAP to authenticate user. |
| 9 | * See the README.ldap |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License |
| 13 | * as published by the Free Software Foundation; either version 2 |
| 14 | * of the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 19 | * |
| 20 | * See the GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; see the file COPYING. If not, write to |
| 24 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor |
| 25 | * Boston, MA 02110-1301, USA. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * Modified 28/11/2001 Iustin Pop <iusty@intensit.de> |
| 30 | * There was a bug regarding the LDAP_TLS option: if both LDAP_TLS |
| 31 | * and was LDAP_AUTHBIND were enabled, the ldap_start_tls function |
| 32 | * was called only for the first connection, resulting in the fact |
| 33 | * that the bind for checking the password was done without TLS, |
| 34 | * sending the password in clear text over the network. Detected |
| 35 | * when using OpenLDAP with "security ssf=128" (which disalows any |
| 36 | * clear-text communication). |
| 37 | */ |
| 38 | |
| 39 | /* |
| 40 | Modified 01/21/2000 James Golovich <james@wwnet.net> |
| 41 | |
| 42 | 1. If LDAP_AUTHBIND is set in the config file, then the ldap server will |
| 43 | handle passwords via authenticated binds, instead of checking these |
| 44 | internally. |
| 45 | 2. Changed paramaters for authldap_get to include pass. |
| 46 | |
| 47 | */ |
| 48 | |
| 49 | /* |
| 50 | Modified 12/31/99 Sam Varshavchik: |
| 51 | |
| 52 | 1. read_env reads from a configuration file, instead of the environment |
| 53 | 2. read_config appropriately modified. |
| 54 | 3. If 'user' contains the @ character, domain from config is NOT appended. |
| 55 | 4. added 'homeDir' attribute. Use 'homeDir' instead of mailDir, and put |
| 56 | mailDir into MAILDIR= |
| 57 | 5. read_config renamed to authldap_read_config |
| 58 | 6. get_user_info renamed to authldap_get |
| 59 | 7. Added authldap_free_config, to clean up all the allocated memory |
| 60 | (required for preauthldap). |
| 61 | 8. Output LDAP attributes are defined in the configuration file as well. |
| 62 | 9. Allow both plaintext and crypted passwords to be read from LDAP. |
| 63 | 10. Added GLOB_UID GLOB_GID, as well as UID and GID params. |
| 64 | |
| 65 | 2/19/2000 Sam. |
| 66 | |
| 67 | Rewrite to allow this code to be used in a long-running authentication daemon |
| 68 | (for Courier). authldap_get renamed to authldapcommon, will initialize and |
| 69 | maintain a persistent connection. Password checking moved entirely to |
| 70 | authldap.c. authldapclose() will unbind and close the connection. |
| 71 | |
| 72 | connection gets closed and reopened automatically after a protocol error. |
| 73 | |
| 74 | error return from authldapcommon will indicate whether this is a transient, |
| 75 | or a permanent failure. |
| 76 | |
| 77 | authldap_free_config removed - no longer required. |
| 78 | |
| 79 | */ |
| 80 | |
| 81 | #if HAVE_CONFIG_H |
| 82 | #include "courier_auth_config.h" |
| 83 | #endif |
| 84 | #include <stdio.h> |
| 85 | #include <stdlib.h> |
| 86 | #include <ctype.h> |
| 87 | #include <string.h> |
| 88 | #include <errno.h> |
| 89 | #include <pwd.h> |
| 90 | #include <grp.h> |
| 91 | #include <time.h> |
| 92 | #if HAVE_UNISTD_H |
| 93 | #include <unistd.h> |
| 94 | #endif |
| 95 | #if HAVE_LBER_H |
| 96 | #include <lber.h> |
| 97 | #endif |
| 98 | #if HAVE_LDAP_H |
| 99 | #include <ldap.h> |
| 100 | #if LDAP_VENDOR_VERSION > 20000 |
| 101 | #define OPENLDAPV2 |
| 102 | #endif |
| 103 | #endif |
| 104 | #if HAVE_SYS_TIME_H |
| 105 | #include <sys/time.h> |
| 106 | #endif |
| 107 | #if HAVE_SYS_STAT_H |
| 108 | #include <sys/stat.h> |
| 109 | #endif |
| 110 | |
| 111 | #include "authldap.h" |
| 112 | #include "auth.h" |
| 113 | #include "authldaprc.h" |
| 114 | #include "courierauthdebug.h" |
| 115 | |
| 116 | #define err courier_auth_err |
| 117 | |
| 118 | #ifndef DEBUG_LDAP |
| 119 | #define DEBUG_LDAP 0 |
| 120 | #endif |
| 121 | |
| 122 | #ifndef LDAP_OPT_SUCCESS |
| 123 | #define LDAP_OPT_SUCCESS LDAP_SUCCESS |
| 124 | #endif |
| 125 | |
| 126 | static char **l_get_values(LDAP *ld, LDAPMessage *entry, const char *attribut) |
| 127 | { |
| 128 | struct berval **p=ldap_get_values_len(ld, entry, attribut); |
| 129 | int i, n; |
| 130 | char **a; |
| 131 | |
| 132 | if (!p) |
| 133 | return NULL; |
| 134 | |
| 135 | n=ldap_count_values_len(p); |
| 136 | |
| 137 | |
| 138 | a=malloc((n + 1) * sizeof(char *)); |
| 139 | |
| 140 | if (!a) |
| 141 | { |
| 142 | DPRINTF("malloc failed"); |
| 143 | ldap_value_free_len(p); |
| 144 | return NULL; |
| 145 | } |
| 146 | |
| 147 | for (i=0; i<n; i++) |
| 148 | { |
| 149 | if ((a[i]=malloc(p[i]->bv_len+1)) == NULL) |
| 150 | { |
| 151 | DPRINTF("malloc failed"); |
| 152 | while (i--) |
| 153 | { |
| 154 | free(a[i]); |
| 155 | } |
| 156 | free(a); |
| 157 | ldap_value_free_len(p); |
| 158 | return NULL; |
| 159 | } |
| 160 | |
| 161 | memcpy(a[i], p[i]->bv_val, p[i]->bv_len); |
| 162 | a[i][p[i]->bv_len]=0; |
| 163 | } |
| 164 | |
| 165 | ldap_value_free_len(p); |
| 166 | a[i]=NULL; |
| 167 | return a; |
| 168 | } |
| 169 | |
| 170 | static void l_value_free(char **p) |
| 171 | { |
| 172 | int i; |
| 173 | |
| 174 | for (i=0; p[i]; ++i) |
| 175 | free(p[i]); |
| 176 | free(p); |
| 177 | } |
| 178 | |
| 179 | static int l_count_values(char **p) |
| 180 | { |
| 181 | int i; |
| 182 | |
| 183 | for (i=0; p[i]; ++i) |
| 184 | ; |
| 185 | return i; |
| 186 | } |
| 187 | |
| 188 | static int l_unbind(LDAP *ld) |
| 189 | { |
| 190 | return ldap_unbind_ext(ld, NULL, NULL); |
| 191 | } |
| 192 | |
| 193 | static int l_simple_bind_s(LDAP *ld, |
| 194 | const char *who, |
| 195 | const char *passwd) |
| 196 | { |
| 197 | struct berval cred; |
| 198 | |
| 199 | cred.bv_len=passwd ? strlen(passwd):0; |
| 200 | cred.bv_val=(char *)passwd; |
| 201 | |
| 202 | return ldap_sasl_bind_s(ld, who, NULL, &cred, NULL, NULL, NULL); |
| 203 | } |
| 204 | |
| 205 | static int l_search_st(LDAP *ld, |
| 206 | const char *base, |
| 207 | int scope, |
| 208 | const char *filter, |
| 209 | char **attrs, |
| 210 | int attrsonly, |
| 211 | struct timeval *timeout, |
| 212 | LDAPMessage **res) |
| 213 | { |
| 214 | return ldap_search_ext_s(ld, base, scope, filter, attrs, |
| 215 | attrsonly, |
| 216 | NULL, NULL, |
| 217 | timeout, |
| 218 | 100, |
| 219 | res); |
| 220 | } |
| 221 | |
| 222 | static int l_modify_s(LDAP *ld, |
| 223 | const char *dn, |
| 224 | LDAPMod **mods) |
| 225 | { |
| 226 | return ldap_modify_ext_s(ld, dn, mods, NULL, NULL); |
| 227 | } |
| 228 | |
| 229 | static int l_search(LDAP *ld, |
| 230 | const char *base, |
| 231 | int scope, |
| 232 | const char *filter, |
| 233 | char **attrs, |
| 234 | int attrsonly) |
| 235 | { |
| 236 | struct timeval tv; |
| 237 | int msgid; |
| 238 | |
| 239 | tv.tv_sec=60*60; |
| 240 | tv.tv_usec=0; |
| 241 | |
| 242 | if (ldap_search_ext(ld, base, scope, filter, attrs, attrsonly, |
| 243 | NULL, NULL, &tv, 1000000, &msgid) != |
| 244 | LDAP_SUCCESS) |
| 245 | return -1; |
| 246 | |
| 247 | return msgid; |
| 248 | } |
| 249 | |
| 250 | struct ldap_info |
| 251 | { |
| 252 | const char *uri; |
| 253 | const char *binddn; |
| 254 | const char *bindpw; |
| 255 | const char *basedn; |
| 256 | const char *mail; |
| 257 | const char *filter; |
| 258 | const char *enumerate_filter; |
| 259 | const char *domain; |
| 260 | |
| 261 | uid_t uid; |
| 262 | gid_t gid; |
| 263 | int timeout; |
| 264 | int authbind; |
| 265 | int initbind; |
| 266 | int deref; |
| 267 | int protocol_version; |
| 268 | int tls; |
| 269 | |
| 270 | const char *mailroot; |
| 271 | |
| 272 | char **auxoptions; |
| 273 | char **auxnames; |
| 274 | const char **attrlist; |
| 275 | |
| 276 | /* Optional emailmap to handle */ |
| 277 | |
| 278 | const char *emailmap; |
| 279 | const char *emailmap_basedn; |
| 280 | const char *emailmap_handle; |
| 281 | const char *emailmap_handle_lookup; |
| 282 | }; |
| 283 | |
| 284 | /* |
| 285 | ** There's a memory leak in OpenLDAP 1.2.11, presumably in earlier versions |
| 286 | ** too. See http://www.OpenLDAP.org/its/index.cgi?findid=864 for more |
| 287 | ** information. To work around the bug, the first time a connection fails |
| 288 | ** we stop trying for 60 seconds. After 60 seconds we kill the process, |
| 289 | ** and let the parent process restart it. |
| 290 | ** |
| 291 | ** We'll control this behavior via LDAP_MEMORY_LEAK. Set it to ZERO to turn |
| 292 | ** off this behavior (whenever OpenLDAP gets fixed). |
| 293 | */ |
| 294 | |
| 295 | static time_t ldapfailflag=0; |
| 296 | |
| 297 | static void ldapconnfailure() |
| 298 | { |
| 299 | const char *p=getenv("LDAP_MEMORY_LEAK"); |
| 300 | |
| 301 | if (!p) |
| 302 | { |
| 303 | #ifdef LDAP_VENDOR_NAME |
| 304 | #ifdef LDAP_VENDOR_VERSION |
| 305 | #define DO_OPENLDAP_CHECK |
| 306 | #endif |
| 307 | #endif |
| 308 | |
| 309 | #ifdef DO_OPENLDAP_CHECK |
| 310 | |
| 311 | /* It's supposed to be fixed in 20019 */ |
| 312 | |
| 313 | if (strcmp(LDAP_VENDOR_NAME, "OpenLDAP") == 0 && |
| 314 | LDAP_VENDOR_VERSION < 20019) |
| 315 | p="1"; |
| 316 | else |
| 317 | p="0"; |
| 318 | #else |
| 319 | p="0"; |
| 320 | #endif |
| 321 | } |
| 322 | |
| 323 | if (atoi(p) && !ldapfailflag) |
| 324 | { |
| 325 | time(&ldapfailflag); |
| 326 | ldapfailflag += 60; |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | static int ldapconncheck() |
| 331 | { |
| 332 | time_t t; |
| 333 | |
| 334 | if (!ldapfailflag) |
| 335 | return (0); |
| 336 | |
| 337 | time(&t); |
| 338 | |
| 339 | if (t >= ldapfailflag) |
| 340 | exit(0); |
| 341 | return (1); |
| 342 | } |
| 343 | |
| 344 | static int read_env(const char *env, const char **copy, |
| 345 | const char *errstr, int needit, const char *value_default); |
| 346 | static void copy_value(LDAP *ld, LDAPMessage *entry, const char *attribut, |
| 347 | char **copy, const char *username); |
| 348 | |
| 349 | /* |
| 350 | * Function: read_env |
| 351 | * Copy the environnement $env and copy to $copy if not null |
| 352 | * if needit is false, and env doesn't exist, copy $value_default to $copy |
| 353 | * INPUT: |
| 354 | * $env: pointer to the environnement name |
| 355 | * $copy: where the value go |
| 356 | * $err: print a nice message when $env not_found and $needit is true |
| 357 | * $needit: if $needit is true and $value not found, return a error |
| 358 | * $value_default: the default value when $needit is false and $env doesn't exists |
| 359 | * OUTPUT: |
| 360 | * boolean |
| 361 | */ |
| 362 | static int read_env(const char *env, const char **copy, |
| 363 | const char *errstr, int needit, const char *value_default) |
| 364 | { |
| 365 | static char *ldapauth=0; |
| 366 | static size_t ldapauth_size=0; |
| 367 | size_t i; |
| 368 | char *p=0; |
| 369 | int l=strlen(env); |
| 370 | |
| 371 | if (!ldapauth) |
| 372 | { |
| 373 | FILE *f=fopen(AUTHLDAPRC, "r"); |
| 374 | struct stat buf; |
| 375 | |
| 376 | if (!f) return (0); |
| 377 | if (fstat(fileno(f), &buf) || |
| 378 | (ldapauth=malloc(buf.st_size+2)) == 0) |
| 379 | { |
| 380 | fclose(f); |
| 381 | return (0); |
| 382 | } |
| 383 | if (fread(ldapauth, buf.st_size, 1, f) != 1) |
| 384 | { |
| 385 | free(ldapauth); |
| 386 | ldapauth=0; |
| 387 | fclose(f); |
| 388 | return (0); |
| 389 | } |
| 390 | ldapauth[ldapauth_size=buf.st_size]=0; |
| 391 | |
| 392 | for (i=0; i<ldapauth_size; i++) |
| 393 | if (ldapauth[i] == '\n') |
| 394 | ldapauth[i]=0; |
| 395 | fclose(f); |
| 396 | } |
| 397 | |
| 398 | for (i=0; i<ldapauth_size; ) |
| 399 | { |
| 400 | p=ldapauth+i; |
| 401 | if (memcmp(p, env, l) == 0 && |
| 402 | isspace((int)(unsigned char)p[l])) |
| 403 | { |
| 404 | p += l; |
| 405 | while (*p && *p != '\n' && |
| 406 | isspace((int)(unsigned char)*p)) |
| 407 | ++p; |
| 408 | break; |
| 409 | } |
| 410 | |
| 411 | while (i < ldapauth_size) |
| 412 | if (ldapauth[i++] == 0) break; |
| 413 | } |
| 414 | |
| 415 | if (i < ldapauth_size) |
| 416 | { |
| 417 | *copy= p; |
| 418 | return (1); |
| 419 | } |
| 420 | |
| 421 | if (needit) |
| 422 | { |
| 423 | err("%s", errstr); |
| 424 | return 0; |
| 425 | } |
| 426 | |
| 427 | *copy=0; |
| 428 | if (value_default) |
| 429 | *copy=value_default; |
| 430 | |
| 431 | return 1; |
| 432 | } |
| 433 | |
| 434 | /* |
| 435 | * Function: authldap_read_config |
| 436 | * Read Configuration from the environnement table |
| 437 | * INPUT: |
| 438 | * $ldap: a structure where we place information |
| 439 | * OUTPUT: |
| 440 | * boolean |
| 441 | */ |
| 442 | static int authldap_read_config(struct ldap_info *ldap) |
| 443 | { |
| 444 | struct passwd *pwent; |
| 445 | struct group *grent; |
| 446 | const char *p; |
| 447 | size_t i, pass; |
| 448 | |
| 449 | for (i=0; ldap->auxoptions && ldap->auxoptions[i]; i++) |
| 450 | free(ldap->auxoptions[i]); |
| 451 | for (i=0; ldap->auxnames && ldap->auxnames[i]; i++) |
| 452 | free(ldap->auxnames[i]); |
| 453 | |
| 454 | if (ldap->attrlist) |
| 455 | free(ldap->attrlist); |
| 456 | if (ldap->auxnames) |
| 457 | free(ldap->auxnames); |
| 458 | if (ldap->auxoptions) |
| 459 | free(ldap->auxoptions); |
| 460 | |
| 461 | memset(ldap,0,sizeof(struct ldap_info)); |
| 462 | |
| 463 | if (!read_env("LDAP_URI",&ldap->uri, |
| 464 | "You need to specify LDAP_URI in config file",1,NULL)) |
| 465 | return 0; |
| 466 | |
| 467 | if (!read_env("LDAP_AUTHBIND", &p, "", 0, "")) |
| 468 | return (0); |
| 469 | |
| 470 | if (p) |
| 471 | sscanf(p,"%d",&ldap->authbind); |
| 472 | |
| 473 | if (!read_env("LDAP_INITBIND", &p, "", 0, "1")) |
| 474 | return (0); |
| 475 | |
| 476 | if (p) |
| 477 | sscanf(p,"%d",&ldap->initbind); |
| 478 | |
| 479 | if (!read_env("LDAP_BASEDN",&ldap->basedn, |
| 480 | "You need to specify a basedn in config file",1,NULL)) |
| 481 | return 0; |
| 482 | if (!read_env("LDAP_BINDDN",&ldap->binddn, |
| 483 | "You need to specify a BINDDN in config file",0,NULL)) |
| 484 | return 0; |
| 485 | if (!read_env("LDAP_BINDPW",&ldap->bindpw, |
| 486 | "You need to specify a password for the BINDDN in config file",0,NULL)) |
| 487 | return 0; |
| 488 | if (!read_env("LDAP_MAIL",&ldap->mail, |
| 489 | "You need to specify a attribute for mail in config file",0,"mail")) |
| 490 | return 0; |
| 491 | if (!read_env("LDAP_DOMAIN",&ldap->domain, |
| 492 | "You need to specify a domain for mail in config file",0,"")) |
| 493 | return 0; |
| 494 | |
| 495 | p=0; |
| 496 | ldap->uid=0; |
| 497 | if (!read_env("LDAP_GLOB_UID", &p, "", 0, "")) |
| 498 | return (0); |
| 499 | |
| 500 | if (p && *p) |
| 501 | { |
| 502 | unsigned long n; |
| 503 | |
| 504 | if (sscanf(p, "%lu", &n) == 1) |
| 505 | ldap->uid=(uid_t)n; |
| 506 | else |
| 507 | { |
| 508 | pwent=getpwnam(p); |
| 509 | if (!pwent) |
| 510 | { |
| 511 | err("authldap: INVALID LDAP_GLOB_UID"); |
| 512 | return (0); |
| 513 | } |
| 514 | ldap->uid=pwent->pw_uid; |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | ldap->gid=0; |
| 519 | p=0; |
| 520 | if (!read_env("LDAP_GLOB_GID", &p, "", 0, "")) |
| 521 | return (0); |
| 522 | |
| 523 | if (p && *p) |
| 524 | { |
| 525 | unsigned long n; |
| 526 | |
| 527 | if (sscanf(p, "%lu", &n) == 1) |
| 528 | ldap->gid=(gid_t)n; |
| 529 | else |
| 530 | { |
| 531 | grent=getgrnam(p); |
| 532 | if (!grent) |
| 533 | { |
| 534 | err("authldap: INVALID LDAP_GLOB_GID"); |
| 535 | return (0); |
| 536 | } |
| 537 | ldap->gid=grent->gr_gid; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | ldap->timeout=5; |
| 542 | p=0; |
| 543 | if (read_env("LDAP_TIMEOUT", &p, "", 0, "") && p) |
| 544 | { |
| 545 | sscanf(p,"%d",&ldap->timeout); |
| 546 | } |
| 547 | |
| 548 | ldap->tls=0; |
| 549 | p=0; |
| 550 | if (read_env("LDAP_TLS", &p, "", 0, "") && p) |
| 551 | { |
| 552 | ldap->tls=atoi(p); |
| 553 | } |
| 554 | |
| 555 | ldap->filter=0; |
| 556 | p=0; |
| 557 | if (read_env("LDAP_FILTER", &p, "", 0, "") && p && strlen (p)) |
| 558 | { |
| 559 | ldap->filter=p; |
| 560 | } |
| 561 | |
| 562 | ldap->enumerate_filter=0; |
| 563 | p=0; |
| 564 | if (read_env("LDAP_ENUMERATE_FILTER", &p, "", 0, "") && p && strlen (p)) |
| 565 | { |
| 566 | ldap->enumerate_filter=p; |
| 567 | } |
| 568 | else if (ldap->filter) |
| 569 | { |
| 570 | ldap->enumerate_filter=ldap->filter; |
| 571 | } |
| 572 | else |
| 573 | { |
| 574 | ldap->enumerate_filter = malloc(strlen(ldap->mail)+3); |
| 575 | if (!ldap->enumerate_filter) |
| 576 | { |
| 577 | perror("CRIT: authldap: malloc failed"); |
| 578 | return 0; |
| 579 | } |
| 580 | sprintf((char *)ldap->enumerate_filter, "%s=*", ldap->mail); |
| 581 | } |
| 582 | |
| 583 | ldap->deref = LDAP_DEREF_NEVER; |
| 584 | ldap->protocol_version = 0; /* use API default */ |
| 585 | p=0; |
| 586 | if (!read_env("LDAP_DEREF", &p, "", 0, "")) |
| 587 | return (0); |
| 588 | if (p) |
| 589 | { |
| 590 | #ifndef LDAP_OPT_DEREF |
| 591 | err("authldaplib: LDAP_OPT_DEREF not available, ignored"); |
| 592 | #endif |
| 593 | if (!strcasecmp (p, "never")) |
| 594 | ldap->deref = LDAP_DEREF_NEVER; |
| 595 | else if (!strcasecmp (p, "searching")) |
| 596 | ldap->deref = LDAP_DEREF_SEARCHING; |
| 597 | else if (!strcasecmp (p, "finding")) |
| 598 | ldap->deref = LDAP_DEREF_FINDING; |
| 599 | else if (!strcasecmp (p, "always")) |
| 600 | ldap->deref = LDAP_DEREF_ALWAYS; |
| 601 | } |
| 602 | |
| 603 | if (!read_env("LDAP_PROTOCOL_VERSION", &p, 0, 0, 0)) |
| 604 | return (0); |
| 605 | if (p) |
| 606 | { |
| 607 | int lpv = atoi(p); |
| 608 | #ifndef LDAP_OPT_PROTOCOL_VERSION |
| 609 | err("authldaplib: LDAP_OPT_PROTOCOL_VERSION not available, ignored"); |
| 610 | #endif |
| 611 | if (lpv == 0 |
| 612 | #ifdef LDAP_VERSION_MIN |
| 613 | || lpv < LDAP_VERSION_MIN |
| 614 | #endif |
| 615 | #ifdef LDAP_VERSION_MAX |
| 616 | || lpv > LDAP_VERSION_MAX |
| 617 | #endif |
| 618 | ) |
| 619 | err("authldaplib: illegal protocol version ignored"); |
| 620 | else |
| 621 | ldap->protocol_version = lpv; |
| 622 | } |
| 623 | |
| 624 | if (!read_env("LDAP_MAILROOT",&ldap->mailroot,"",0,NULL) |
| 625 | || ldap->mailroot == NULL || ldap->mailroot[0] == 0) |
| 626 | ldap->mailroot=NULL; |
| 627 | |
| 628 | if (!read_env("LDAP_EMAILMAP", &ldap->emailmap, "", 0, "") || |
| 629 | !read_env("LDAP_EMAILMAP_BASEDN", &ldap->emailmap_basedn, "", 0, "") || |
| 630 | !read_env("LDAP_EMAILMAP_ATTRIBUTE", &ldap->emailmap_handle, "", 0, "")|| |
| 631 | !read_env("LDAP_EMAILMAP_MAIL", |
| 632 | &ldap->emailmap_handle_lookup, "", 0, "")) |
| 633 | return (0); |
| 634 | |
| 635 | |
| 636 | for (pass=0; pass<2; pass++) |
| 637 | { |
| 638 | if (pass) |
| 639 | { |
| 640 | if ((ldap->auxnames=malloc((i+1)*sizeof(char *))) |
| 641 | == NULL || |
| 642 | (ldap->auxoptions=malloc((i+1)*sizeof(char *))) |
| 643 | == NULL) |
| 644 | { |
| 645 | perror("CRIT: authldap: malloc failed"); |
| 646 | if (ldap->auxnames) |
| 647 | ldap->auxnames[0]=0; |
| 648 | return 0; |
| 649 | } |
| 650 | } |
| 651 | i=0; |
| 652 | |
| 653 | if (pass) |
| 654 | { |
| 655 | ldap->auxnames[0]=NULL; |
| 656 | ldap->auxoptions[0]=NULL; |
| 657 | } |
| 658 | |
| 659 | if (!read_env("LDAP_AUXOPTIONS", &p, "", 0, NULL) |
| 660 | || p == NULL || *p == 0) |
| 661 | p=NULL; |
| 662 | |
| 663 | while (p && *p) |
| 664 | { |
| 665 | size_t n; |
| 666 | |
| 667 | if (*p == ',') |
| 668 | { |
| 669 | ++p; |
| 670 | continue; |
| 671 | } |
| 672 | |
| 673 | for (n=0; p[n] && p[n] != ',' && p[n] != '='; n++) |
| 674 | ; |
| 675 | |
| 676 | if (pass) |
| 677 | { |
| 678 | if ((ldap->auxoptions[i]=malloc(n+1)) == NULL) |
| 679 | { |
| 680 | perror("CRIT: authldap: malloc failed"); |
| 681 | return 0; |
| 682 | } |
| 683 | |
| 684 | memcpy(ldap->auxoptions[i], p, n); |
| 685 | ldap->auxoptions[i][n]=0; |
| 686 | ldap->auxoptions[i+1]=NULL; |
| 687 | } |
| 688 | |
| 689 | p += n; |
| 690 | |
| 691 | if (*p == '=') ++p; |
| 692 | |
| 693 | for (n=0; p[n] && p[n] != ','; n++) |
| 694 | ; |
| 695 | |
| 696 | if (pass) |
| 697 | { |
| 698 | if (n == 0) |
| 699 | { |
| 700 | if ((ldap->auxnames[i]= |
| 701 | strdup(ldap->auxoptions[i])) |
| 702 | == NULL) |
| 703 | { |
| 704 | perror("CRIT: authldap: malloc failed"); |
| 705 | return 0; |
| 706 | } |
| 707 | } |
| 708 | else if ((ldap->auxnames[i]=malloc(n+1)) == NULL) |
| 709 | { |
| 710 | perror("CRIT: authldap: malloc failed"); |
| 711 | return 0; |
| 712 | } |
| 713 | else |
| 714 | { |
| 715 | memcpy(ldap->auxnames[i], p, n); |
| 716 | ldap->auxnames[i][n]=0; |
| 717 | ldap->auxnames[i+1]=NULL; |
| 718 | } |
| 719 | } |
| 720 | p += n; |
| 721 | ++i; |
| 722 | } |
| 723 | } |
| 724 | |
| 725 | if ((ldap->attrlist=malloc((i+20)*sizeof(const char *))) == NULL) |
| 726 | { |
| 727 | perror("CRIT: authldap: malloc failed"); |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | return 1; |
| 732 | } |
| 733 | |
| 734 | static void get_error(LDAP *ld, LDAPMessage *entry, |
| 735 | const char *func, |
| 736 | const char *attribut) |
| 737 | { |
| 738 | #if HAVE_LDAP_PARSE_RESULT |
| 739 | |
| 740 | int errcode; |
| 741 | char *nmatched; |
| 742 | char *errmsg; |
| 743 | |
| 744 | |
| 745 | if (ldap_parse_result(ld, entry, &errcode, &nmatched, |
| 746 | &errmsg, NULL, NULL, 0) |
| 747 | != LDAP_SUCCESS) |
| 748 | { |
| 749 | DPRINTF("ldap_parseresult failed"); |
| 750 | } |
| 751 | else |
| 752 | { |
| 753 | if (errcode && errcode != LDAP_DECODING_ERROR && |
| 754 | errcode != LDAP_NO_RESULTS_RETURNED) |
| 755 | { |
| 756 | DPRINTF("get_values attribute %s: %s", |
| 757 | attribut, |
| 758 | errmsg ? errmsg:"unknown error"); |
| 759 | } |
| 760 | |
| 761 | if (errmsg) |
| 762 | ldap_memfree(errmsg); |
| 763 | if (nmatched) |
| 764 | ldap_memfree(nmatched); |
| 765 | } |
| 766 | #else |
| 767 | #if HAVE_LDAP_RESULT2ERROR |
| 768 | int ld_errno = ldap_result2error(ld,entry,0); |
| 769 | if (ld_errno && ld_errno != LDAP_DECODING_ERROR |
| 770 | && ld_errno != LDAP_NO_RESULTS_RETURNED) |
| 771 | { |
| 772 | DPRINTF("get_values attribute %s: %s", attribut, |
| 773 | ldap_err2string(ld_errno)); |
| 774 | } |
| 775 | #else |
| 776 | if (ld->ld_errno != LDAP_DECODING_ERROR |
| 777 | && ld->ld_errno != LDAP_NO_RESULTS_RETURNED) |
| 778 | { |
| 779 | DPRINTF("get_values attribute %s: %s", attribut, |
| 780 | ldap_err2string(ld->ld_errno)); |
| 781 | } |
| 782 | #endif |
| 783 | #endif |
| 784 | } |
| 785 | |
| 786 | static char **get_values(LDAP *ld, LDAPMessage *entry, const char *attribut) |
| 787 | { |
| 788 | char ** values; |
| 789 | values=l_get_values(ld,entry, (char *)attribut); |
| 790 | |
| 791 | if (values==NULL) |
| 792 | { |
| 793 | get_error(ld, entry, "get_values", attribut); |
| 794 | } |
| 795 | |
| 796 | return values; |
| 797 | } |
| 798 | |
| 799 | |
| 800 | |
| 801 | /* |
| 802 | * Function: copy_value |
| 803 | * Copy value from a LDAP attribute to $copy |
| 804 | * INPUT: |
| 805 | * $ld: the connection with the LDAP server |
| 806 | * $entry: the entry who contains attributes |
| 807 | * $attribut: this attribut |
| 808 | * $copy: where data can go |
| 809 | * OUTPUT: |
| 810 | * void |
| 811 | */ |
| 812 | static void copy_value(LDAP *ld, LDAPMessage *entry, const char *attribut, |
| 813 | char **copy, const char *username) |
| 814 | { |
| 815 | char ** values; |
| 816 | values=l_get_values(ld,entry, attribut); |
| 817 | |
| 818 | if (values==NULL) |
| 819 | { |
| 820 | get_error(ld, entry, "copy_value ", attribut); |
| 821 | *copy=NULL; |
| 822 | return; |
| 823 | } |
| 824 | /* We accept only attribute with one value */ |
| 825 | else if (l_count_values(values)>1) |
| 826 | { |
| 827 | *copy=strdup(values[0]); |
| 828 | fprintf(stderr, "WARN: authldaplib: duplicate attribute %s for %s\n", |
| 829 | attribut, |
| 830 | username); |
| 831 | *copy=NULL; |
| 832 | } |
| 833 | /* We accept only attribute with one value */ |
| 834 | else if (l_count_values(values)!=1) |
| 835 | { |
| 836 | *copy=NULL; |
| 837 | } |
| 838 | else |
| 839 | { |
| 840 | *copy=strdup(values[0]); |
| 841 | } |
| 842 | #if DEBUG_LDAP |
| 843 | DPRINTF("copy_value %s: %s",attribut,values[0]); |
| 844 | #endif |
| 845 | l_value_free(values); |
| 846 | } |
| 847 | |
| 848 | static struct ldap_info my_ldap; |
| 849 | static LDAP *my_ldap_fp=0; |
| 850 | static LDAP *bindp=0; /* for checking passwords with AUTHBIND */ |
| 851 | |
| 852 | void authldapclose() |
| 853 | { |
| 854 | if (my_ldap_fp) |
| 855 | { |
| 856 | l_unbind(my_ldap_fp); |
| 857 | my_ldap_fp=0; |
| 858 | } |
| 859 | if (bindp) |
| 860 | { |
| 861 | l_unbind(bindp); |
| 862 | bindp=0; |
| 863 | } |
| 864 | } |
| 865 | |
| 866 | static int ldaperror(int rc) |
| 867 | { |
| 868 | #ifdef OPENLDAPV2 |
| 869 | if (rc && !LDAP_NAME_ERROR(rc)) |
| 870 | #else |
| 871 | if (rc && !NAME_ERROR(rc)) |
| 872 | #endif |
| 873 | { |
| 874 | /* If there was a protocol error, close the connection */ |
| 875 | authldapclose(); |
| 876 | ldapconnfailure(); |
| 877 | } |
| 878 | return (rc); |
| 879 | } |
| 880 | |
| 881 | /* This function takes a ldap connection and |
| 882 | * tries to enable TLS on it. |
| 883 | */ |
| 884 | static int enable_tls_on(LDAP *conn) { |
| 885 | #if HAVE_LDAP_TLS |
| 886 | int version; |
| 887 | int ldrc; |
| 888 | |
| 889 | if (ldaperror(ldrc=ldap_get_option (conn, |
| 890 | LDAP_OPT_PROTOCOL_VERSION, |
| 891 | &version)) |
| 892 | != LDAP_SUCCESS) |
| 893 | { |
| 894 | const char *s=ldap_err2string(ldrc); |
| 895 | |
| 896 | err("ldap_get_option failed: %s", s); |
| 897 | return (-1); |
| 898 | } |
| 899 | |
| 900 | if (version < LDAP_VERSION3) |
| 901 | { |
| 902 | version = LDAP_VERSION3; |
| 903 | (void)ldap_set_option (conn, |
| 904 | LDAP_OPT_PROTOCOL_VERSION, |
| 905 | &version); |
| 906 | } |
| 907 | |
| 908 | if (ldaperror(ldrc=ldap_start_tls_s(conn, NULL, NULL)) |
| 909 | != LDAP_SUCCESS) |
| 910 | { |
| 911 | const char *s=ldap_err2string(ldrc); |
| 912 | |
| 913 | err("ldap_start_tls_s failed: %s", s); |
| 914 | return (-1); |
| 915 | } |
| 916 | return 0; |
| 917 | #else |
| 918 | err("authldaplib: TLS not available"); |
| 919 | return (-1); |
| 920 | #endif |
| 921 | } |
| 922 | |
| 923 | static LDAP *ldapconnect() |
| 924 | { |
| 925 | LDAP *p=NULL; |
| 926 | |
| 927 | #if DEBUG_LDAP |
| 928 | DPRINTF("URI: %s",my_ldap.uri); |
| 929 | DPRINTF("UID: %d",my_ldap.uid); |
| 930 | DPRINTF("GID: %d",my_ldap.gid); |
| 931 | #endif |
| 932 | |
| 933 | if (ldapconncheck()) |
| 934 | { |
| 935 | DPRINTF("authldaplib: timing out after failed connection"); |
| 936 | return (NULL); |
| 937 | } |
| 938 | |
| 939 | ldap_initialize(&p, my_ldap.uri); |
| 940 | |
| 941 | if (p==NULL) |
| 942 | { |
| 943 | err("cannot connect to LDAP server (%s): %s", |
| 944 | my_ldap.uri, strerror(errno)); |
| 945 | ldapconnfailure(); |
| 946 | } |
| 947 | #ifdef LDAP_OPT_NETWORK_TIMEOUT |
| 948 | if (my_ldap.timeout > 0) |
| 949 | ldap_set_option (p, LDAP_OPT_NETWORK_TIMEOUT, &my_ldap.timeout); |
| 950 | #endif |
| 951 | #if DEBUG_LDAP |
| 952 | DPRINTF("ldapconnect end"); |
| 953 | #endif |
| 954 | return (p); |
| 955 | } |
| 956 | |
| 957 | static int ldapopen() |
| 958 | { |
| 959 | int ldrc; |
| 960 | |
| 961 | if (my_ldap_fp) return (0); |
| 962 | |
| 963 | if (authldap_read_config(&my_ldap) == 0) |
| 964 | { |
| 965 | err("authldaplib: error in LDAP configuration file, aborting"); |
| 966 | return (1); |
| 967 | } |
| 968 | |
| 969 | my_ldap_fp=ldapconnect(); |
| 970 | |
| 971 | if (!my_ldap_fp) |
| 972 | { |
| 973 | return (1); |
| 974 | } |
| 975 | |
| 976 | #ifdef LDAP_OPT_PROTOCOL_VERSION |
| 977 | |
| 978 | /* Set protocol version if selected */ |
| 979 | if (my_ldap.protocol_version && |
| 980 | ldaperror(ldrc = ldap_set_option(my_ldap_fp, LDAP_OPT_PROTOCOL_VERSION, |
| 981 | (void *) & my_ldap.protocol_version)) != LDAP_SUCCESS) |
| 982 | { |
| 983 | const char *s=ldap_err2string(ldrc); |
| 984 | |
| 985 | err("ldap_set_option(PROTOCOL_VERSION %d) failed: %s", |
| 986 | my_ldap.protocol_version, s); |
| 987 | authldapclose(); |
| 988 | ldapconnfailure(); |
| 989 | return (-1); |
| 990 | } |
| 991 | if (my_ldap.protocol_version) |
| 992 | { |
| 993 | DPRINTF("selected ldap protocol version %d", my_ldap.protocol_version); |
| 994 | } |
| 995 | #endif |
| 996 | |
| 997 | if (my_ldap.tls && enable_tls_on(my_ldap_fp)) |
| 998 | { |
| 999 | authldapclose(); |
| 1000 | ldapconnfailure(); |
| 1001 | return (-1); |
| 1002 | } |
| 1003 | |
| 1004 | #ifdef LDAP_OPT_DEREF |
| 1005 | |
| 1006 | /* Set dereferencing mode */ |
| 1007 | if (ldaperror(ldrc = ldap_set_option(my_ldap_fp, LDAP_OPT_DEREF, |
| 1008 | (void *) & my_ldap.deref)) != LDAP_SUCCESS) |
| 1009 | { |
| 1010 | const char *s=ldap_err2string(ldrc); |
| 1011 | |
| 1012 | err("ldap_set_option(DEREF) failed: %s", s); |
| 1013 | authldapclose(); |
| 1014 | ldapconnfailure(); |
| 1015 | return (-1); |
| 1016 | } |
| 1017 | #endif |
| 1018 | |
| 1019 | if(my_ldap.initbind) |
| 1020 | { |
| 1021 | /* Bind to server */ |
| 1022 | if (courier_authdebug_login_level >= 2) |
| 1023 | { |
| 1024 | DPRINTF("binding to LDAP server as DN '%s', password '%s'", |
| 1025 | my_ldap.binddn ? my_ldap.binddn : "<null>", |
| 1026 | my_ldap.bindpw ? my_ldap.bindpw : "<null>"); |
| 1027 | } |
| 1028 | else |
| 1029 | { |
| 1030 | DPRINTF("binding to LDAP server as DN '%s'", |
| 1031 | my_ldap.binddn ? my_ldap.binddn : "<null>"); |
| 1032 | } |
| 1033 | |
| 1034 | if (ldaperror(ldrc = l_simple_bind_s(my_ldap_fp, |
| 1035 | my_ldap.binddn, |
| 1036 | my_ldap.bindpw)) |
| 1037 | != LDAP_SUCCESS) |
| 1038 | { |
| 1039 | const char *s=ldap_err2string(ldrc); |
| 1040 | |
| 1041 | err("ldap_simple_bind_s failed: %s", s); |
| 1042 | authldapclose(); |
| 1043 | ldapconnfailure(); |
| 1044 | return (-1); |
| 1045 | } |
| 1046 | } |
| 1047 | return (0); |
| 1048 | } |
| 1049 | |
| 1050 | static int auth_ldap_do(const char *, const char *, const char *, |
| 1051 | int (*)(struct authinfo *, void *), |
| 1052 | void *arg, const char *); |
| 1053 | |
| 1054 | int auth_ldap_changepw(const char *dummy, const char *user, |
| 1055 | const char *pass, |
| 1056 | const char *newpass) |
| 1057 | { |
| 1058 | return auth_ldap_do("authlib", user, pass, NULL, NULL, newpass); |
| 1059 | } |
| 1060 | |
| 1061 | /* |
| 1062 | * Function: authldapcommon |
| 1063 | * Get information from the LDAP server ($ldap) for this $user |
| 1064 | * INPUT: |
| 1065 | * $user: the login name |
| 1066 | * $pass: the login password (NULL if we don't want to check the pw) |
| 1067 | * callback - callback function with filled in authentication info |
| 1068 | * arg - extra argument for the callback function. |
| 1069 | * OUTPUT: |
| 1070 | * < 0 - authentication failure |
| 1071 | * > 0 - temporary failure |
| 1072 | * else return code from the callback function. |
| 1073 | */ |
| 1074 | |
| 1075 | int authldapcommon(const char *service, |
| 1076 | const char *user, const char *pass, |
| 1077 | int (*callback)(struct authinfo *, void *), |
| 1078 | void *arg) |
| 1079 | { |
| 1080 | return (auth_ldap_do(service, user, pass, callback, arg, NULL)); |
| 1081 | } |
| 1082 | |
| 1083 | static int auth_ldap_do2(const char *service, |
| 1084 | const char *user, const char *pass, |
| 1085 | int (*callback)(struct authinfo *, void *), |
| 1086 | void *arg, const char *newpass); |
| 1087 | |
| 1088 | static int auth_ldap_retry(const char *service, |
| 1089 | const char *user, const char *pass, |
| 1090 | int (*callback)(struct authinfo *, void *), |
| 1091 | void *arg, const char *newpass); |
| 1092 | |
| 1093 | static int auth_ldap_do(const char *service, |
| 1094 | const char *user, const char *pass, |
| 1095 | int (*callback)(struct authinfo *, void *), |
| 1096 | void *arg, const char *newpass) |
| 1097 | { |
| 1098 | int rc=auth_ldap_retry(service, user, pass, callback, arg, newpass); |
| 1099 | |
| 1100 | if (rc > 0) |
| 1101 | rc=auth_ldap_retry(service, user, pass, callback, arg, |
| 1102 | newpass); |
| 1103 | |
| 1104 | return rc; |
| 1105 | } |
| 1106 | |
| 1107 | static int auth_ldap_retry(const char *service, |
| 1108 | const char *user, const char *pass, |
| 1109 | int (*callback)(struct authinfo *, void *), |
| 1110 | void *arg, const char *newpass) |
| 1111 | { |
| 1112 | char *q; |
| 1113 | int i; |
| 1114 | |
| 1115 | q=courier_auth_ldap_escape(user); |
| 1116 | |
| 1117 | if (!q) |
| 1118 | { |
| 1119 | perror("malloc"); |
| 1120 | return 1; |
| 1121 | } |
| 1122 | |
| 1123 | i=auth_ldap_do2(service, q, pass, callback, arg, newpass); |
| 1124 | free(q); |
| 1125 | return (i); |
| 1126 | } |
| 1127 | |
| 1128 | |
| 1129 | static int auth_ldap_do3(const char *service, |
| 1130 | const char *attrname, |
| 1131 | const char *user, const char *pass, |
| 1132 | int (*callback)(struct authinfo *, void *), |
| 1133 | void *arg, const char *newpass, const char *authaddr); |
| 1134 | |
| 1135 | static char *emailmap_get_search_string(const char *str, const char *email); |
| 1136 | |
| 1137 | static int auth_ldap_do2(const char *service, |
| 1138 | const char *user, const char *pass, |
| 1139 | int (*callback)(struct authinfo *, void *), |
| 1140 | void *arg, const char *newpass) |
| 1141 | { |
| 1142 | char *srch; |
| 1143 | struct timeval tv; |
| 1144 | const char *attributes[2]; |
| 1145 | LDAPMessage *result, *entry; |
| 1146 | int cnt; |
| 1147 | char *v; |
| 1148 | const char *aname; |
| 1149 | |
| 1150 | if (ldapopen()) return (-1); |
| 1151 | |
| 1152 | if (my_ldap.emailmap[0] == 0 || strchr(user, '@') == NULL) |
| 1153 | return (auth_ldap_do3(service, my_ldap.mail, |
| 1154 | user, pass, callback, arg, newpass, |
| 1155 | user)); |
| 1156 | /* Mapping is not enabled */ |
| 1157 | |
| 1158 | srch=emailmap_get_search_string(my_ldap.emailmap, user); |
| 1159 | |
| 1160 | if (!srch) |
| 1161 | { |
| 1162 | perror("CRIT: authldaplib: malloc"); |
| 1163 | exit(1); |
| 1164 | } |
| 1165 | DPRINTF("using emailmap search: %s", srch); |
| 1166 | |
| 1167 | tv.tv_sec=my_ldap.timeout; |
| 1168 | tv.tv_usec=0; |
| 1169 | |
| 1170 | attributes[0]=my_ldap.emailmap_handle; |
| 1171 | |
| 1172 | if (!attributes[0][0]) |
| 1173 | attributes[0]="handle"; |
| 1174 | attributes[1]=NULL; |
| 1175 | |
| 1176 | if (ldaperror(l_search_st(my_ldap_fp, |
| 1177 | (char *)(my_ldap.emailmap_basedn[0] ? |
| 1178 | my_ldap.emailmap_basedn |
| 1179 | :my_ldap.basedn), |
| 1180 | LDAP_SCOPE_SUBTREE, |
| 1181 | srch, (char **)attributes, 0, |
| 1182 | &tv, &result)) |
| 1183 | != LDAP_SUCCESS) |
| 1184 | { |
| 1185 | free(srch); |
| 1186 | |
| 1187 | DPRINTF("ldap_search_st failed"); |
| 1188 | if (my_ldap_fp) return (-1); |
| 1189 | return (1); |
| 1190 | } |
| 1191 | |
| 1192 | if ((cnt=ldap_count_entries(my_ldap_fp, result)) != 1) |
| 1193 | { |
| 1194 | if (cnt) |
| 1195 | err("emailmap: %d entries returned from search %s (but we need exactly 1)", |
| 1196 | cnt, srch); |
| 1197 | free(srch); |
| 1198 | ldap_msgfree(result); |
| 1199 | return -1; |
| 1200 | } |
| 1201 | free(srch); |
| 1202 | |
| 1203 | entry=ldap_first_entry(my_ldap_fp, result); |
| 1204 | |
| 1205 | if (!entry) |
| 1206 | { |
| 1207 | ldap_msgfree(result); |
| 1208 | |
| 1209 | err("authldap: unexpected NULL from ldap_first_entry"); |
| 1210 | return -1; |
| 1211 | } |
| 1212 | |
| 1213 | copy_value(my_ldap_fp, entry, attributes[0], &v, user); |
| 1214 | |
| 1215 | if (!v) |
| 1216 | { |
| 1217 | DPRINTF("emailmap: empty attribute"); |
| 1218 | ldap_msgfree(result); |
| 1219 | return (-1); |
| 1220 | } |
| 1221 | |
| 1222 | aname=my_ldap.emailmap_handle_lookup; |
| 1223 | if (aname[0] == 0) |
| 1224 | aname=my_ldap.mail; |
| 1225 | |
| 1226 | DPRINTF("emailmap results: aname=%s, handle=%s", aname, v); |
| 1227 | |
| 1228 | cnt=auth_ldap_do3(service, |
| 1229 | aname, v, pass, callback, arg, newpass, user); |
| 1230 | |
| 1231 | ldap_msgfree(result); |
| 1232 | free(v); |
| 1233 | return (cnt); |
| 1234 | } |
| 1235 | |
| 1236 | static int auth_ldap_do3(const char *service, |
| 1237 | const char *attrname, |
| 1238 | const char *user, const char *pass, |
| 1239 | int (*callback)(struct authinfo *, void *), |
| 1240 | void *arg, const char *newpass, |
| 1241 | const char *authaddr) |
| 1242 | { |
| 1243 | char *newpass_crypt=0; |
| 1244 | const char *attributes[10]; |
| 1245 | struct timeval timeout; |
| 1246 | |
| 1247 | LDAPMessage *result; |
| 1248 | LDAPMessage *entry; |
| 1249 | char *filter, *dn; |
| 1250 | int i, j; |
| 1251 | |
| 1252 | struct authinfo auth; |
| 1253 | char *homeDir=0; |
| 1254 | char *mailDir=0; |
| 1255 | char *userPassword=0; |
| 1256 | char *cryptPassword=0; |
| 1257 | char *options=0; |
| 1258 | char *cn=0; |
| 1259 | uid_t au; |
| 1260 | gid_t ag; |
| 1261 | int rc; |
| 1262 | char *quota=0; |
| 1263 | int additionalFilter = 0; |
| 1264 | int hasAdditionalFilter = 0; |
| 1265 | |
| 1266 | hasAdditionalFilter = my_ldap.filter != 0; |
| 1267 | |
| 1268 | memset(&auth, 0, sizeof(auth)); |
| 1269 | |
| 1270 | if (hasAdditionalFilter) |
| 1271 | { |
| 1272 | /* To add the additional filter, we need to add on the |
| 1273 | * additional size for "(&)" and the other filter. So |
| 1274 | * filter+3 |
| 1275 | */ |
| 1276 | additionalFilter = strlen(my_ldap.filter) + 3; |
| 1277 | } |
| 1278 | |
| 1279 | if ((filter=malloc(additionalFilter+strlen(attrname)+strlen(user)+ |
| 1280 | (my_ldap.domain ? strlen(my_ldap.domain):0)+ |
| 1281 | sizeof ("(=@)"))) == 0) |
| 1282 | { |
| 1283 | perror("malloc"); |
| 1284 | return 1; |
| 1285 | } |
| 1286 | strcpy(filter, "\0"); |
| 1287 | |
| 1288 | if (hasAdditionalFilter) |
| 1289 | { |
| 1290 | strcat(filter, "(&"); |
| 1291 | strcat(filter, my_ldap.filter); |
| 1292 | } |
| 1293 | |
| 1294 | strcat(strcat(strcat(strcat(filter, "("), attrname), "="), user); |
| 1295 | if ( my_ldap.domain && my_ldap.domain[0] && strchr(user, '@') == 0 ) |
| 1296 | strcat(strcat(filter, "@"), my_ldap.domain); |
| 1297 | strcat(filter, ")"); |
| 1298 | |
| 1299 | if (hasAdditionalFilter) |
| 1300 | { |
| 1301 | strcat(filter, ")"); |
| 1302 | } |
| 1303 | |
| 1304 | DPRINTF("using search filter: %s", filter); |
| 1305 | |
| 1306 | timeout.tv_sec=my_ldap.timeout; |
| 1307 | timeout.tv_usec=0; |
| 1308 | |
| 1309 | read_env("LDAP_HOMEDIR", &attributes[0], "", 0, "homeDir"); |
| 1310 | read_env(service && strcmp(service, "courier") == 0 |
| 1311 | ? "LDAP_DEFAULTDELIVERY":"LDAP_MAILDIR", |
| 1312 | &attributes[1], "", 0, 0); |
| 1313 | read_env("LDAP_FULLNAME", &attributes[2], "", 0, "cn"); |
| 1314 | read_env("LDAP_CLEARPW", &attributes[3], "", 0, 0); |
| 1315 | read_env("LDAP_CRYPTPW", &attributes[4], "", 0, 0); |
| 1316 | read_env("LDAP_UID", &attributes[5], "", 0, 0); |
| 1317 | read_env("LDAP_GID", &attributes[6], "", 0, 0); |
| 1318 | attributes[7]=my_ldap.mail; |
| 1319 | read_env("LDAP_MAILDIRQUOTA", &attributes[8], "", 0, 0); |
| 1320 | |
| 1321 | j=0; |
| 1322 | for (i=0; i<9; i++) |
| 1323 | { |
| 1324 | if (attributes[i]) |
| 1325 | my_ldap.attrlist[j++]=attributes[i]; |
| 1326 | } |
| 1327 | |
| 1328 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 1329 | my_ldap.attrlist[j++]=my_ldap.auxoptions[i]; |
| 1330 | |
| 1331 | my_ldap.attrlist[j]=0; |
| 1332 | |
| 1333 | if (ldaperror(l_search_st(my_ldap_fp, |
| 1334 | (char *)my_ldap.basedn,LDAP_SCOPE_SUBTREE, |
| 1335 | filter, (char **)my_ldap.attrlist, 0, |
| 1336 | &timeout, &result)) |
| 1337 | != LDAP_SUCCESS) |
| 1338 | { |
| 1339 | DPRINTF("ldap_search_st() failed"); |
| 1340 | free(filter); |
| 1341 | |
| 1342 | if (my_ldap_fp) return (-1); |
| 1343 | return (1); |
| 1344 | } |
| 1345 | |
| 1346 | free(filter); |
| 1347 | |
| 1348 | /* If we are more than one result, reject */ |
| 1349 | if (ldap_count_entries(my_ldap_fp,result)!=1) |
| 1350 | { |
| 1351 | DPRINTF("number of entries returned: %d (but we need exactly 1)", |
| 1352 | ldap_count_entries(my_ldap_fp,result)); |
| 1353 | ldap_msgfree(result); |
| 1354 | return -1; |
| 1355 | } |
| 1356 | |
| 1357 | dn = ldap_get_dn(my_ldap_fp, result); |
| 1358 | |
| 1359 | DPRINTF("one entry returned, DN: %s", dn ? dn : "<null>"); |
| 1360 | |
| 1361 | if (dn == NULL) |
| 1362 | { |
| 1363 | DPRINTF("ldap_get_dn failed"); |
| 1364 | return -1; |
| 1365 | } |
| 1366 | |
| 1367 | /* Get the pointer on this result */ |
| 1368 | entry=ldap_first_entry(my_ldap_fp,result); |
| 1369 | if (entry==NULL) |
| 1370 | { |
| 1371 | DPRINTF("ldap_first_entry failed"); |
| 1372 | free(dn); |
| 1373 | return -1; |
| 1374 | } |
| 1375 | |
| 1376 | #if DEBUG_LDAP |
| 1377 | DPRINTF("after ldap_first_entry"); |
| 1378 | #endif |
| 1379 | |
| 1380 | /* print all the raw attributes */ |
| 1381 | if (courier_authdebug_login_level >= 2) |
| 1382 | { |
| 1383 | char *attr; |
| 1384 | BerElement *berptr = 0; |
| 1385 | |
| 1386 | attr = ldap_first_attribute(my_ldap_fp, entry, &berptr); |
| 1387 | if (attr) |
| 1388 | { |
| 1389 | DPRINTF("raw ldap entry returned:"); |
| 1390 | } |
| 1391 | |
| 1392 | while (attr) |
| 1393 | { |
| 1394 | char **av, **ap; |
| 1395 | |
| 1396 | av = l_get_values(my_ldap_fp, entry, attr); |
| 1397 | ap = av; |
| 1398 | if (av) |
| 1399 | { |
| 1400 | while(*ap) |
| 1401 | { |
| 1402 | DPRINTF("| %s: %s", attr, *ap); |
| 1403 | ap++; |
| 1404 | } |
| 1405 | l_value_free(av); |
| 1406 | } |
| 1407 | ldap_memfree(attr); |
| 1408 | attr = ldap_next_attribute(my_ldap_fp, entry, berptr); |
| 1409 | } |
| 1410 | |
| 1411 | ber_free(berptr, 0); |
| 1412 | } |
| 1413 | |
| 1414 | /* Copy the directory and the password into struct */ |
| 1415 | copy_value(my_ldap_fp,entry,attributes[0],&homeDir, user); |
| 1416 | if (attributes[1]) |
| 1417 | copy_value(my_ldap_fp,entry,attributes[1],&mailDir, user); |
| 1418 | copy_value(my_ldap_fp,entry,attributes[2],&cn, user); |
| 1419 | if (attributes[3]) |
| 1420 | copy_value(my_ldap_fp,entry,attributes[3],&userPassword, user); |
| 1421 | if (attributes[4]) |
| 1422 | copy_value(my_ldap_fp,entry,attributes[4],&cryptPassword, user); |
| 1423 | |
| 1424 | au=my_ldap.uid; |
| 1425 | ag=my_ldap.gid; |
| 1426 | if (attributes[5]) |
| 1427 | { |
| 1428 | char *p=0; |
| 1429 | unsigned long n; |
| 1430 | |
| 1431 | copy_value(my_ldap_fp, entry, attributes[5], &p, user); |
| 1432 | if (p) { |
| 1433 | if (sscanf(p, "%lu", &n) > 0) |
| 1434 | au= (uid_t)n; |
| 1435 | free(p); |
| 1436 | } |
| 1437 | #if DEBUG_LDAP |
| 1438 | DPRINTF("au= %d",au); |
| 1439 | #endif |
| 1440 | } |
| 1441 | |
| 1442 | if (attributes[6]) |
| 1443 | { |
| 1444 | char *p=0; |
| 1445 | unsigned long n; |
| 1446 | |
| 1447 | copy_value(my_ldap_fp, entry, attributes[6], &p, user); |
| 1448 | if (p) { |
| 1449 | if (sscanf(p, "%lu", &n) > 0) |
| 1450 | ag= (gid_t)n; |
| 1451 | free(p); |
| 1452 | } |
| 1453 | #if DEBUG_LDAP |
| 1454 | DPRINTF("ag= %d",ag); |
| 1455 | #endif |
| 1456 | } |
| 1457 | |
| 1458 | if (attributes[8]) |
| 1459 | copy_value(my_ldap_fp,entry,attributes[8],"a, user); |
| 1460 | |
| 1461 | if (homeDir != 0 && my_ldap.mailroot != 0 && *my_ldap.mailroot) |
| 1462 | { |
| 1463 | char *new_mailroot=malloc(strlen(homeDir)+ |
| 1464 | strlen(my_ldap.mailroot)+2); |
| 1465 | |
| 1466 | if (!new_mailroot) |
| 1467 | { |
| 1468 | perror("CRIT: authldap: malloc failed"); |
| 1469 | rc= -1; |
| 1470 | } |
| 1471 | else |
| 1472 | { |
| 1473 | strcat(strcat(strcpy(new_mailroot, my_ldap.mailroot), |
| 1474 | "/"), homeDir); |
| 1475 | free(homeDir); |
| 1476 | homeDir=new_mailroot; |
| 1477 | } |
| 1478 | } |
| 1479 | |
| 1480 | j=1; |
| 1481 | |
| 1482 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 1483 | { |
| 1484 | char *val; |
| 1485 | |
| 1486 | copy_value(my_ldap_fp, entry, my_ldap.auxoptions[i], &val, |
| 1487 | user); |
| 1488 | |
| 1489 | if (!val) |
| 1490 | continue; |
| 1491 | |
| 1492 | j += 2 + strlen(my_ldap.auxnames[i]) + |
| 1493 | strlen(val); |
| 1494 | free(val); |
| 1495 | } |
| 1496 | |
| 1497 | options=malloc(j); |
| 1498 | |
| 1499 | if (!options) |
| 1500 | { |
| 1501 | perror("CRIT: authldap: malloc failed"); |
| 1502 | rc= -1; |
| 1503 | } |
| 1504 | else |
| 1505 | { |
| 1506 | *options=0; |
| 1507 | |
| 1508 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 1509 | { |
| 1510 | char *val; |
| 1511 | |
| 1512 | copy_value(my_ldap_fp, entry, my_ldap.auxoptions[i], |
| 1513 | &val, |
| 1514 | user); |
| 1515 | |
| 1516 | if (!val) |
| 1517 | continue; |
| 1518 | |
| 1519 | if (*options) |
| 1520 | strcat(options, ","); |
| 1521 | strcat(options, my_ldap.auxnames[i]); |
| 1522 | strcat(options, "="); |
| 1523 | strcat(options, val); |
| 1524 | free(val); |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | |
| 1529 | auth.sysuserid= &au; |
| 1530 | auth.sysgroupid= ag; |
| 1531 | auth.homedir=homeDir; |
| 1532 | auth.address=authaddr; |
| 1533 | auth.fullname=cn; |
| 1534 | auth.maildir=mailDir; |
| 1535 | auth.clearpasswd=userPassword; |
| 1536 | auth.passwd=cryptPassword; |
| 1537 | auth.quota=quota; |
| 1538 | auth.options=options && *options ? options:NULL; |
| 1539 | |
| 1540 | if (homeDir == 0) |
| 1541 | auth.homedir=""; |
| 1542 | |
| 1543 | rc=0; |
| 1544 | |
| 1545 | if (au == 0 || ag == 0) |
| 1546 | { |
| 1547 | err("authldaplib: refuse to authenticate %s: uid=%d, gid=%d (zero uid or gid not permitted)", |
| 1548 | user, au, ag); |
| 1549 | rc= 1; |
| 1550 | } |
| 1551 | |
| 1552 | courier_authdebug_authinfo("DEBUG: authldaplib: ", &auth, |
| 1553 | userPassword, cryptPassword); |
| 1554 | |
| 1555 | if (pass) |
| 1556 | { |
| 1557 | if (my_ldap.authbind) |
| 1558 | { |
| 1559 | if (!bindp) |
| 1560 | { |
| 1561 | bindp=ldapconnect(); |
| 1562 | |
| 1563 | if (!bindp) |
| 1564 | { |
| 1565 | DPRINTF("ldapconnect failed"); |
| 1566 | rc=1; |
| 1567 | } |
| 1568 | else |
| 1569 | #ifdef LDAP_OPT_PROTOCOL_VERSION |
| 1570 | /* Set protocol version */ |
| 1571 | if (my_ldap.protocol_version && |
| 1572 | ldap_set_option(bindp, LDAP_OPT_PROTOCOL_VERSION, |
| 1573 | (void *) & my_ldap.protocol_version) != LDAP_OPT_SUCCESS) |
| 1574 | { |
| 1575 | err("ldap_set_option(PROTOCOL_VERSION %d) failed", |
| 1576 | my_ldap.protocol_version); |
| 1577 | rc = 1; |
| 1578 | } |
| 1579 | else |
| 1580 | #endif |
| 1581 | if(my_ldap.tls && enable_tls_on(bindp)) { |
| 1582 | err("authldaplib: LDAP_TLS enabled but I'm unable to start tls, check your config"); |
| 1583 | rc = 1; |
| 1584 | } |
| 1585 | } |
| 1586 | |
| 1587 | if (bindp) |
| 1588 | { |
| 1589 | if (rc == 0) |
| 1590 | { |
| 1591 | int ldrc; |
| 1592 | DPRINTF("rebinding with DN '%s' to validate password", dn); |
| 1593 | ldrc = l_simple_bind_s(bindp, dn, pass); |
| 1594 | switch (ldrc) |
| 1595 | { |
| 1596 | case LDAP_SUCCESS: |
| 1597 | DPRINTF("authentication bind successful"); |
| 1598 | break; |
| 1599 | case LDAP_INVALID_CREDENTIALS: |
| 1600 | DPRINTF("authentication bind failed, invalid credentials"); |
| 1601 | rc = -1; |
| 1602 | break; |
| 1603 | default: |
| 1604 | DPRINTF("authentication bind failed, some other problem: %s", |
| 1605 | ldap_err2string(ldrc)); |
| 1606 | rc = 1; |
| 1607 | break; |
| 1608 | } |
| 1609 | } |
| 1610 | /* Drop the connection if there was a fatal |
| 1611 | error or if we are using historic LDAP v2, |
| 1612 | which didn't support rebinding on same conn */ |
| 1613 | if (rc > 0 || my_ldap.protocol_version == 2) |
| 1614 | { |
| 1615 | l_unbind(bindp); |
| 1616 | bindp=0; |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | if (rc == 0 && newpass) |
| 1621 | { |
| 1622 | if ((newpass_crypt=authcryptpasswd(newpass, |
| 1623 | auth.passwd) |
| 1624 | ) == 0) |
| 1625 | rc= -1; |
| 1626 | } |
| 1627 | } |
| 1628 | else |
| 1629 | { |
| 1630 | if (auth.clearpasswd) |
| 1631 | { |
| 1632 | if (strcmp(pass,auth.clearpasswd)) |
| 1633 | { |
| 1634 | if (courier_authdebug_login_level >= 2) |
| 1635 | { |
| 1636 | DPRINTF("supplied password '%s' does not match clearpasswd '%s'", |
| 1637 | pass, auth.clearpasswd); |
| 1638 | } |
| 1639 | else |
| 1640 | { |
| 1641 | DPRINTF("supplied password does not match clearpasswd"); |
| 1642 | } |
| 1643 | rc= -1; |
| 1644 | } |
| 1645 | } |
| 1646 | else |
| 1647 | { |
| 1648 | const char *p=auth.passwd; |
| 1649 | |
| 1650 | if (!p) |
| 1651 | { |
| 1652 | DPRINTF("no password to compare against!"); |
| 1653 | rc= -1; |
| 1654 | } |
| 1655 | else if (authcheckpassword(pass, p)) |
| 1656 | rc= -1; |
| 1657 | } |
| 1658 | |
| 1659 | if (rc == 0 && newpass && auth.passwd) |
| 1660 | { |
| 1661 | if ((newpass_crypt=authcryptpasswd(newpass, |
| 1662 | auth.passwd) |
| 1663 | ) == 0) |
| 1664 | rc= -1; |
| 1665 | } |
| 1666 | } |
| 1667 | } |
| 1668 | |
| 1669 | if (rc == 0 && newpass) |
| 1670 | { |
| 1671 | LDAPMod *mods[3]; |
| 1672 | int mod_index=0; |
| 1673 | |
| 1674 | LDAPMod mod_clear, mod_crypt; |
| 1675 | char *mod_clear_vals[2], *mod_crypt_vals[2]; |
| 1676 | |
| 1677 | if (attributes[3]) |
| 1678 | { |
| 1679 | mods[mod_index]= &mod_clear; |
| 1680 | mod_clear.mod_op=LDAP_MOD_REPLACE; |
| 1681 | mod_clear.mod_type=(char *)attributes[3]; |
| 1682 | mod_clear.mod_values=mod_clear_vals; |
| 1683 | |
| 1684 | mod_clear_vals[0]=(char *)newpass; |
| 1685 | mod_clear_vals[1]=NULL; |
| 1686 | ++mod_index; |
| 1687 | } |
| 1688 | |
| 1689 | if (attributes[4] && newpass_crypt) |
| 1690 | { |
| 1691 | mods[mod_index]= &mod_crypt; |
| 1692 | mod_crypt.mod_op=LDAP_MOD_REPLACE; |
| 1693 | mod_crypt.mod_type=(char *)attributes[4]; |
| 1694 | mod_crypt.mod_values=mod_crypt_vals; |
| 1695 | |
| 1696 | mod_crypt_vals[0]=newpass_crypt; |
| 1697 | mod_crypt_vals[1]=NULL; |
| 1698 | ++mod_index; |
| 1699 | } |
| 1700 | if (mod_index == 0) |
| 1701 | rc= -1; |
| 1702 | else |
| 1703 | { |
| 1704 | int ld_errno; |
| 1705 | mods[mod_index]=0; |
| 1706 | |
| 1707 | /* On a system which uses LDAP_AUTHBIND, we probably |
| 1708 | want to use the user's credentials (bindp) rather |
| 1709 | than the search credentials (my_ldap_fp) for |
| 1710 | performing the password update. (May not always be |
| 1711 | true, ideally it would be configurable) */ |
| 1712 | ld_errno = l_modify_s(bindp? bindp:my_ldap_fp, dn, mods); |
| 1713 | if (ld_errno != LDAP_SUCCESS) |
| 1714 | { |
| 1715 | rc= -1; |
| 1716 | DPRINTF("LDAP modify failed: %s", |
| 1717 | ldap_err2string(ld_errno)); |
| 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | if (newpass_crypt) |
| 1723 | free(newpass_crypt); |
| 1724 | free (dn); |
| 1725 | #if DEBUG_LDAP |
| 1726 | DPRINTF("before callback rc=%d",rc); |
| 1727 | #endif |
| 1728 | |
| 1729 | if (rc == 0 && callback) |
| 1730 | { |
| 1731 | if (!auth.clearpasswd) |
| 1732 | auth.clearpasswd=pass; |
| 1733 | rc= (*callback)(&auth, arg); |
| 1734 | #if DEBUG_LDAP |
| 1735 | DPRINTF("after callback rc=%d",rc); |
| 1736 | #endif |
| 1737 | } |
| 1738 | |
| 1739 | ldap_msgfree(result); |
| 1740 | if (options) free(options); |
| 1741 | if (homeDir) free(homeDir); |
| 1742 | if (mailDir) free(mailDir); |
| 1743 | if (userPassword) free(userPassword); |
| 1744 | if (cryptPassword) free(cryptPassword); |
| 1745 | if (cn) free(cn); |
| 1746 | if (quota) free(quota); |
| 1747 | return (rc); |
| 1748 | } |
| 1749 | |
| 1750 | /** |
| 1751 | ** Create an emailmap search string. I'm going to wrap this into an external |
| 1752 | ** variable, so I'll use generic coding here. |
| 1753 | */ |
| 1754 | |
| 1755 | struct varlist { |
| 1756 | const char *varname; |
| 1757 | int varname_len; |
| 1758 | const char *varvalue; |
| 1759 | int varvalue_len; |
| 1760 | } ; |
| 1761 | |
| 1762 | static char *var_expand(const char *, const struct varlist *); |
| 1763 | |
| 1764 | static char *emailmap_get_search_string(const char *str, const char *email) |
| 1765 | { |
| 1766 | struct varlist vl[3]; |
| 1767 | const char *realmptr=strrchr(email, '@');/* Guaranteed nonNULL */ |
| 1768 | |
| 1769 | static const char userid[]="user"; |
| 1770 | static const char realm[]="realm"; |
| 1771 | |
| 1772 | vl[0].varname=userid; |
| 1773 | vl[0].varname_len=sizeof(userid)-1; |
| 1774 | vl[0].varvalue=email; |
| 1775 | vl[0].varvalue_len=realmptr - email; |
| 1776 | vl[1].varname=realm; |
| 1777 | vl[1].varname_len=sizeof(realm)-1; |
| 1778 | vl[1].varvalue=realmptr+1; |
| 1779 | vl[1].varvalue_len=strlen(vl[1].varvalue); |
| 1780 | vl[2].varname=NULL; |
| 1781 | |
| 1782 | return (var_expand(str, vl)); |
| 1783 | } |
| 1784 | |
| 1785 | static char *var_expand(const char *str, const struct varlist *vl) |
| 1786 | { |
| 1787 | const char *p; |
| 1788 | int cnt; |
| 1789 | int pass; |
| 1790 | char *q, *r; |
| 1791 | |
| 1792 | cnt=0; |
| 1793 | q=NULL; |
| 1794 | |
| 1795 | /* |
| 1796 | ** Pass 1 - count expanded string length, allocate buffer, |
| 1797 | ** Pass 2 - generate the string. |
| 1798 | */ |
| 1799 | |
| 1800 | for (pass=0; pass<2; pass++) |
| 1801 | { |
| 1802 | if (pass) |
| 1803 | { |
| 1804 | if ((q=malloc(cnt)) == NULL) |
| 1805 | return (NULL); |
| 1806 | } |
| 1807 | r=q; |
| 1808 | cnt=1; |
| 1809 | |
| 1810 | p=str; |
| 1811 | |
| 1812 | while (*p) |
| 1813 | { |
| 1814 | if (*p == '@') |
| 1815 | { |
| 1816 | int j; |
| 1817 | |
| 1818 | for (j=0; vl[j].varname; j++) |
| 1819 | { |
| 1820 | if (memcmp(vl[j].varname, p+1, |
| 1821 | vl[j].varname_len) == 0 |
| 1822 | && p[vl[j].varname_len+1] == '@') |
| 1823 | break; |
| 1824 | } |
| 1825 | |
| 1826 | if (vl[j].varname) |
| 1827 | { |
| 1828 | p += vl[j].varname_len+2; |
| 1829 | |
| 1830 | if (r) |
| 1831 | { |
| 1832 | memcpy(r, vl[j].varvalue, |
| 1833 | vl[j].varvalue_len); |
| 1834 | r += vl[j].varvalue_len; |
| 1835 | } |
| 1836 | cnt += vl[j].varvalue_len; |
| 1837 | continue; |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | if (r) |
| 1842 | *r++ = *p; |
| 1843 | ++p; |
| 1844 | ++cnt; |
| 1845 | } |
| 1846 | if (r) |
| 1847 | *r=0; |
| 1848 | } |
| 1849 | |
| 1850 | return (q); |
| 1851 | } |
| 1852 | |
| 1853 | void auth_ldap_enumerate( void(*cb_func)(const char *name, |
| 1854 | uid_t uid, |
| 1855 | gid_t gid, |
| 1856 | const char *homedir, |
| 1857 | const char *maildir, |
| 1858 | const char *options, |
| 1859 | void *void_arg), |
| 1860 | void *void_arg) |
| 1861 | { |
| 1862 | const char *attributes[5]; |
| 1863 | |
| 1864 | int i, j; |
| 1865 | int msgid; |
| 1866 | |
| 1867 | if (ldapopen()) |
| 1868 | { |
| 1869 | (*cb_func)(NULL, 0, 0, NULL, NULL, NULL, void_arg); |
| 1870 | return; |
| 1871 | } |
| 1872 | |
| 1873 | read_env("LDAP_MAIL", &attributes[0], "", 0, "mail"); |
| 1874 | read_env("LDAP_UID", &attributes[1], "", 0, 0); |
| 1875 | read_env("LDAP_GID", &attributes[2], "", 0, 0); |
| 1876 | read_env("LDAP_HOMEDIR", &attributes[3], "", 0, "homeDir"); |
| 1877 | read_env("LDAP_MAILDIR", &attributes[4], "", 0, 0); |
| 1878 | |
| 1879 | j=0; |
| 1880 | for (i=0; i<5; i++) |
| 1881 | { |
| 1882 | if (attributes[i]) |
| 1883 | my_ldap.attrlist[j++]=attributes[i]; |
| 1884 | } |
| 1885 | |
| 1886 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 1887 | my_ldap.attrlist[j++]=my_ldap.auxoptions[i]; |
| 1888 | |
| 1889 | my_ldap.attrlist[j]=0; |
| 1890 | |
| 1891 | DPRINTF("ldap_search: basedn='%s', filter='%s'", |
| 1892 | my_ldap.basedn, my_ldap.enumerate_filter); |
| 1893 | if ((msgid = l_search(my_ldap_fp, (char *)my_ldap.basedn,LDAP_SCOPE_SUBTREE, |
| 1894 | my_ldap.enumerate_filter, |
| 1895 | (char **)my_ldap.attrlist, 0)) < 0) |
| 1896 | { |
| 1897 | DPRINTF("ldap_search failed"); |
| 1898 | return; |
| 1899 | } |
| 1900 | |
| 1901 | while(1) /* process results as they come in */ |
| 1902 | { |
| 1903 | struct timeval timeout; |
| 1904 | LDAPMessage *result; |
| 1905 | LDAPMessage *entry; |
| 1906 | int ldrc; |
| 1907 | |
| 1908 | timeout.tv_sec=my_ldap.timeout; |
| 1909 | timeout.tv_usec=0; |
| 1910 | ldrc = ldap_result(my_ldap_fp, msgid, 0, &timeout, &result); |
| 1911 | switch (ldrc) |
| 1912 | { |
| 1913 | case -1: |
| 1914 | DPRINTF("error in ldap_result"); |
| 1915 | ldap_msgfree(result); |
| 1916 | return; |
| 1917 | case 0: |
| 1918 | DPRINTF("timeout waiting for search result"); |
| 1919 | ldap_msgfree(result); |
| 1920 | return; |
| 1921 | case LDAP_RES_SEARCH_ENTRY: |
| 1922 | break; /* deal with below */ |
| 1923 | case LDAP_RES_SEARCH_RESULT: |
| 1924 | if (ldap_parse_result(my_ldap_fp, result, &ldrc, |
| 1925 | NULL, NULL, NULL, NULL, 0) != LDAP_SUCCESS) |
| 1926 | { |
| 1927 | DPRINTF("ldap_parse_result failed"); |
| 1928 | ldap_msgfree(result); |
| 1929 | return; |
| 1930 | } |
| 1931 | ldap_msgfree(result); |
| 1932 | if (ldrc != LDAP_SUCCESS) |
| 1933 | { |
| 1934 | DPRINTF("ldap search failure result: %s", |
| 1935 | ldap_err2string(ldrc)); |
| 1936 | return; |
| 1937 | } |
| 1938 | /* Search successfully completed */ |
| 1939 | (*cb_func)(NULL, 0, 0, NULL, NULL, NULL, void_arg); |
| 1940 | return; |
| 1941 | default: |
| 1942 | DPRINTF("ldap result type 0x%02X ignored", ldrc); |
| 1943 | ldap_msgfree(result); |
| 1944 | continue; |
| 1945 | } |
| 1946 | |
| 1947 | entry = ldap_first_entry(my_ldap_fp, result); |
| 1948 | while (entry) |
| 1949 | { |
| 1950 | char **names = get_values(my_ldap_fp, entry, attributes[0]); |
| 1951 | int n; |
| 1952 | |
| 1953 | if (names == NULL) |
| 1954 | { |
| 1955 | entry = ldap_next_entry(my_ldap_fp, entry); |
| 1956 | continue; |
| 1957 | } |
| 1958 | |
| 1959 | n=l_count_values(names); |
| 1960 | if (n > 0) |
| 1961 | { |
| 1962 | const char *name = names[0] ? names[0] : "<null>"; |
| 1963 | int i,j; |
| 1964 | char *uid_s=NULL; |
| 1965 | char *gid_s=NULL; |
| 1966 | char *homedir; |
| 1967 | char *maildir; |
| 1968 | char *options; |
| 1969 | uid_t uid=my_ldap.uid; |
| 1970 | gid_t gid=my_ldap.gid; |
| 1971 | |
| 1972 | if (attributes[1]) |
| 1973 | { |
| 1974 | copy_value(my_ldap_fp, entry, attributes[1], |
| 1975 | &uid_s, |
| 1976 | name); |
| 1977 | } |
| 1978 | |
| 1979 | if (attributes[2]) |
| 1980 | { |
| 1981 | copy_value(my_ldap_fp, entry, attributes[2], |
| 1982 | &gid_s, name); |
| 1983 | } |
| 1984 | |
| 1985 | copy_value(my_ldap_fp, entry, attributes[3], |
| 1986 | &homedir, name); |
| 1987 | copy_value(my_ldap_fp, entry, attributes[4], |
| 1988 | &maildir, name); |
| 1989 | |
| 1990 | if (uid_s) |
| 1991 | uid=atol(uid_s); |
| 1992 | if (gid_s) |
| 1993 | gid=atol(gid_s); |
| 1994 | |
| 1995 | j=1; |
| 1996 | |
| 1997 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 1998 | { |
| 1999 | char *val; |
| 2000 | |
| 2001 | copy_value(my_ldap_fp, entry, my_ldap.auxoptions[i], |
| 2002 | &val, name); |
| 2003 | |
| 2004 | if (!val) |
| 2005 | continue; |
| 2006 | |
| 2007 | j += 2 + strlen(my_ldap.auxnames[i]) + |
| 2008 | strlen(val); |
| 2009 | free(val); |
| 2010 | } |
| 2011 | |
| 2012 | options=malloc(j); |
| 2013 | |
| 2014 | if (!options) |
| 2015 | { |
| 2016 | l_value_free(names); |
| 2017 | perror("CRIT: auth_ldap_enumerate: malloc failed"); |
| 2018 | return; |
| 2019 | } |
| 2020 | *options=0; |
| 2021 | |
| 2022 | for (i=0; my_ldap.auxoptions[i]; i++) |
| 2023 | { |
| 2024 | char *val; |
| 2025 | |
| 2026 | copy_value(my_ldap_fp, entry, my_ldap.auxoptions[i], |
| 2027 | &val, name); |
| 2028 | |
| 2029 | if (!val) |
| 2030 | continue; |
| 2031 | |
| 2032 | if (*options) |
| 2033 | strcat(options, ","); |
| 2034 | strcat(options, my_ldap.auxnames[i]); |
| 2035 | strcat(options, "="); |
| 2036 | strcat(options, val); |
| 2037 | free(val); |
| 2038 | } |
| 2039 | |
| 2040 | for (j = 0; j < n; j++) |
| 2041 | { |
| 2042 | name=names[j]; |
| 2043 | |
| 2044 | if (name && homedir) |
| 2045 | (*cb_func)(name, uid, gid, homedir, |
| 2046 | maildir, options, void_arg); |
| 2047 | } |
| 2048 | |
| 2049 | if (uid_s) |
| 2050 | free(uid_s); |
| 2051 | if (gid_s) |
| 2052 | free(gid_s); |
| 2053 | if (homedir) |
| 2054 | free(homedir); |
| 2055 | if (maildir) |
| 2056 | free(maildir); |
| 2057 | if (options) |
| 2058 | free(options); |
| 2059 | } |
| 2060 | l_value_free(names); |
| 2061 | |
| 2062 | entry = ldap_next_entry(my_ldap_fp, entry); |
| 2063 | } |
| 2064 | |
| 2065 | ldap_msgfree(result); |
| 2066 | } |
| 2067 | } |