source3/lib/popt_common.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Common popt routines
   4
   5    Copyright (C) Tim Potter 2001,2002
   6    Copyright (C) Jelmer Vernooij 2002,2003
   7    Copyright (C) James Peach 2006
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24
  25 /* Handle command line options:
  26  *              -d,--debuglevel
  27  *              -s,--configfile
  28  *              -O,--socket-options
  29  *              -V,--version
  30  *              -l,--log-base
  31  *              -n,--netbios-name
  32  *              -W,--workgroup
  33  *              -i,--scope
  34  */
  35
  36 extern bool AllowDebugChange;
  37 extern bool override_logfile;
  38
  39 static void set_logfile(poptContext con, const char * arg)
  40 {
  41
  42         char *lfile = NULL;
  43         const char *pname;
  44
  45         /* Find out basename of current program */
  46         pname = strrchr_m(poptGetInvocationName(con),'/');
  47
  48         if (!pname)
  49                 pname = poptGetInvocationName(con);
  50         else
  51                 pname++;
  52
  53         if (asprintf(&lfile, "%s/log.%s", arg, pname) < 0) {
  54                 return;
  55         }
  56         lp_set_logfile(lfile);
  57         SAFE_FREE(lfile);
  58 }
  59
  60 static bool PrintSambaVersionString;
  61
  62 static void popt_common_callback(poptContext con,
  63                            enum poptCallbackReason reason,
  64                            const struct poptOption *opt,
  65                            const char *arg, const void *data)
  66 {
  67
  68         if (reason == POPT_CALLBACK_REASON_PRE) {
  69                 set_logfile(con, get_dyn_LOGFILEBASE());
  70                 return;
  71         }
  72
  73         if (reason == POPT_CALLBACK_REASON_POST) {
  74
  75                 if (PrintSambaVersionString) {
  76                         printf( "Version %s\n", SAMBA_VERSION_STRING);
  77                         exit(0);
  78                 }
  79
  80                 if (is_default_dyn_CONFIGFILE()) {
  81                         if(getenv("SMB_CONF_PATH")) {
  82                                 set_dyn_CONFIGFILE(getenv("SMB_CONF_PATH"));
  83                         }
  84                 }
  85
  86                 /* Further 'every Samba program must do this' hooks here. */
  87                 return;
  88         }
  89
  90         switch(opt->val) {
  91         case 'd':
  92                 if (arg) {
  93                         debug_parse_levels(arg);
  94                         AllowDebugChange = False;
  95                 }
  96                 break;
  97
  98         case 'V':
  99                 PrintSambaVersionString = True;
 100                 break;
 101
 102         case 'O':
 103                 if (arg) {
 104                         lp_do_parameter(-1, "socket options", arg);
 105                 }
 106                 break;
 107
 108         case 's':
 109                 if (arg) {
 110                         set_dyn_CONFIGFILE(arg);
 111                 }
 112                 break;
 113
 114         case 'n':
 115                 if (arg) {
 116                         set_global_myname(arg);
 117                 }
 118                 break;
 119
 120         case 'l':
 121                 if (arg) {
 122                         set_logfile(con, arg);
 123                         override_logfile = True;
 124                         set_dyn_LOGFILEBASE(arg);
 125                 }
 126                 break;
 127
 128         case 'i':
 129                 if (arg) {
 130                           set_global_scope(arg);
 131                 }
 132                 break;
 133
 134         case 'W':
 135                 if (arg) {
 136                         set_global_myworkgroup(arg);
 137                 }
 138                 break;
 139         }
 140 }
 141
 142 struct poptOption popt_common_connection[] = {
 143         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 144         { "socket-options", 'O', POPT_ARG_STRING, NULL, 'O', "socket options to use",
 145           "SOCKETOPTIONS" },
 146         { "netbiosname", 'n', POPT_ARG_STRING, NULL, 'n', "Primary netbios name", "NETBIOSNAME" },
 147         { "workgroup", 'W', POPT_ARG_STRING, NULL, 'W', "Set the workgroup name", "WORKGROUP" },
 148         { "scope", 'i', POPT_ARG_STRING, NULL, 'i', "Use this Netbios scope", "SCOPE" },
 149
 150         POPT_TABLEEND
 151 };
 152
 153 struct poptOption popt_common_samba[] = {
 154         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, (void *)popt_common_callback },
 155         { "debuglevel", 'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
 156         { "configfile", 's', POPT_ARG_STRING, NULL, 's', "Use alternate configuration file", "CONFIGFILE" },
 157         { "log-basename", 'l', POPT_ARG_STRING, NULL, 'l', "Base name for log files", "LOGFILEBASE" },
 158         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 159         POPT_TABLEEND
 160 };
 161
 162 struct poptOption popt_common_configfile[] = {
 163         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE|POPT_CBFLAG_POST, (void *)popt_common_callback },
 164         { "configfile", 0, POPT_ARG_STRING, NULL, 's', "Use alternate configuration file", "CONFIGFILE" },
 165         POPT_TABLEEND
 166 };
 167
 168 struct poptOption popt_common_version[] = {
 169         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_POST, (void *)popt_common_callback },
 170         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 171         POPT_TABLEEND
 172 };
 173
 174 struct poptOption popt_common_debuglevel[] = {
 175         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 176         { "debuglevel", 'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
 177         POPT_TABLEEND
 178 };
 179
 180
 181 /* Handle command line options:
 182  *              --sbindir
 183  *              --bindir
 184  *              --swatdir
 185  *              --lmhostsfile
 186  *              --libdir
 187  *              --modulesdir
 188  *              --shlibext
 189  *              --lockdir
 190  *              --piddir
 191  *              --smb-passwd-file
 192  *              --private-dir
 193  */
 194
 195 enum dyn_item{
 196         DYN_SBINDIR = 1,
 197         DYN_BINDIR,
 198         DYN_SWATDIR,
 199         DYN_LMHOSTSFILE,
 200         DYN_LIBDIR,
 201         DYN_MODULESDIR,
 202         DYN_SHLIBEXT,
 203         DYN_LOCKDIR,
 204         DYN_PIDDIR,
 205         DYN_SMB_PASSWD_FILE,
 206         DYN_PRIVATE_DIR,
 207 };
 208
 209
 210 static void popt_dynconfig_callback(poptContext con,
 211                            enum poptCallbackReason reason,
 212                            const struct poptOption *opt,
 213                            const char *arg, const void *data)
 214 {
 215
 216         switch (opt->val) {
 217         case DYN_SBINDIR:
 218                 if (arg) {
 219                         set_dyn_SBINDIR(arg);
 220                 }
 221                 break;
 222
 223         case DYN_BINDIR:
 224                 if (arg) {
 225                         set_dyn_BINDIR(arg);
 226                 }
 227                 break;
 228
 229         case DYN_SWATDIR:
 230                 if (arg) {
 231                         set_dyn_SWATDIR(arg);
 232                 }
 233                 break;
 234
 235         case DYN_LMHOSTSFILE:
 236                 if (arg) {
 237                         set_dyn_LMHOSTSFILE(arg);
 238                 }
 239                 break;
 240
 241         case DYN_LIBDIR:
 242                 if (arg) {
 243                         set_dyn_LIBDIR(arg);
 244                 }
 245                 break;
 246
 247         case DYN_MODULESDIR:
 248                 if (arg) {
 249                         set_dyn_MODULESDIR(arg);
 250                 }
 251                 break;
 252
 253         case DYN_SHLIBEXT:
 254                 if (arg) {
 255                         set_dyn_SHLIBEXT(arg);
 256                 }
 257                 break;
 258
 259         case DYN_LOCKDIR:
 260                 if (arg) {
 261                         set_dyn_LOCKDIR(arg);
 262                 }
 263                 break;
 264
 265         case DYN_PIDDIR:
 266                 if (arg) {
 267                         set_dyn_PIDDIR(arg);
 268                 }
 269                 break;
 270
 271         case DYN_SMB_PASSWD_FILE:
 272                 if (arg) {
 273                         set_dyn_SMB_PASSWD_FILE(arg);
 274                 }
 275                 break;
 276
 277         case DYN_PRIVATE_DIR:
 278                 if (arg) {
 279                         set_dyn_PRIVATE_DIR(arg);
 280                 }
 281                 break;
 282
 283         }
 284 }
 285
 286 const struct poptOption popt_common_dynconfig[] = {
 287
 288         { NULL, '\0', POPT_ARG_CALLBACK, (void *)popt_dynconfig_callback },
 289
 290         { "sbindir", '\0' , POPT_ARG_STRING, NULL, DYN_SBINDIR,
 291             "Path to sbin directory", "SBINDIR" },
 292         { "bindir", '\0' , POPT_ARG_STRING, NULL, DYN_BINDIR,
 293             "Path to bin directory", "BINDIR" },
 294         { "swatdir", '\0' , POPT_ARG_STRING, NULL, DYN_SWATDIR,
 295             "Path to SWAT installation directory", "SWATDIR" },
 296         { "lmhostsfile", '\0' , POPT_ARG_STRING, NULL, DYN_LMHOSTSFILE,
 297             "Path to lmhosts file", "LMHOSTSFILE" },
 298         { "libdir", '\0' , POPT_ARG_STRING, NULL, DYN_LIBDIR,
 299             "Path to shared library directory", "LIBDIR" },
 300         { "modulesdir", '\0' , POPT_ARG_STRING, NULL, DYN_MODULESDIR,
 301             "Path to shared modules directory", "MODULESDIR" },
 302         { "shlibext", '\0' , POPT_ARG_STRING, NULL, DYN_SHLIBEXT,
 303             "Shared library extension", "SHLIBEXT" },
 304         { "lockdir", '\0' , POPT_ARG_STRING, NULL, DYN_LOCKDIR,
 305             "Path to lock file directory", "LOCKDIR" },
 306         { "piddir", '\0' , POPT_ARG_STRING, NULL, DYN_PIDDIR,
 307             "Path to PID file directory", "PIDDIR" },
 308         { "smb-passwd-file", '\0' , POPT_ARG_STRING, NULL, DYN_SMB_PASSWD_FILE,
 309             "Path to smbpasswd file", "SMB_PASSWD_FILE" },
 310         { "private-dir", '\0' , POPT_ARG_STRING, NULL, DYN_PRIVATE_DIR,
 311             "Path to private data directory", "PRIVATE_DIR" },
 312
 313         POPT_TABLEEND
 314 };
 315
 316 /****************************************************************************
 317  * get a password from a a file or file descriptor
 318  * exit on failure
 319  * ****************************************************************************/
 320
 321 static void get_password_file(struct user_auth_info *auth_info)
 322 {
 323         int fd = -1;
 324         char *p;
 325         bool close_it = False;
 326         char *spec = NULL;
 327         char pass[128];
 328
 329         if ((p = getenv("PASSWD_FD")) != NULL) {
 330                 if (asprintf(&spec, "descriptor %s", p) < 0) {
 331                         return;
 332                 }
 333                 sscanf(p, "%d", &fd);
 334                 close_it = false;
 335         } else if ((p = getenv("PASSWD_FILE")) != NULL) {
 336                 fd = sys_open(p, O_RDONLY, 0);
 337                 spec = SMB_STRDUP(p);
 338                 if (fd < 0) {
 339                         fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
 340                                         spec, strerror(errno));
 341                         exit(1);
 342                 }
 343                 close_it = True;
 344         }
 345
 346         if (fd < 0) {
 347                 fprintf(stderr, "fd = %d, < 0\n", fd);
 348                 exit(1);
 349         }
 350
 351         for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
 352                 p && p - pass < sizeof(pass);) {
 353                 switch (read(fd, p, 1)) {
 354                 case 1:
 355                         if (*p != '\n' && *p != '\0') {
 356                                 *++p = '\0'; /* advance p, and null-terminate pass */
 357                                 break;
 358                         }
 359                 case 0:
 360                         if (p - pass) {
 361                                 *p = '\0'; /* null-terminate it, just in case... */
 362                                 p = NULL; /* then force the loop condition to become false */
 363                                 break;
 364                         } else {
 365                                 fprintf(stderr, "Error reading password from file %s: %s\n",
 366                                                 spec, "empty password\n");
 367                                 SAFE_FREE(spec);
 368                                 exit(1);
 369                         }
 370
 371                 default:
 372                         fprintf(stderr, "Error reading password from file %s: %s\n",
 373                                         spec, strerror(errno));
 374                         SAFE_FREE(spec);
 375                         exit(1);
 376                 }
 377         }
 378         SAFE_FREE(spec);
 379
 380         set_cmdline_auth_info_password(auth_info, pass);
 381         if (close_it) {
 382                 close(fd);
 383         }
 384 }
 385
 386 static void get_credentials_file(struct user_auth_info *auth_info,
 387                                  const char *file)
 388 {
 389         XFILE *auth;
 390         fstring buf;
 391         uint16 len = 0;
 392         char *ptr, *val, *param;
 393
 394         if ((auth=x_fopen(file, O_RDONLY, 0)) == NULL)
 395         {
 396                 /* fail if we can't open the credentials file */
 397                 d_printf("ERROR: Unable to open credentials file!\n");
 398                 exit(-1);
 399         }
 400
 401         while (!x_feof(auth))
 402         {
 403                 /* get a line from the file */
 404                 if (!x_fgets(buf, sizeof(buf), auth))
 405                         continue;
 406                 len = strlen(buf);
 407
 408                 if ((len) && (buf[len-1]=='\n'))
 409                 {
 410                         buf[len-1] = '\0';
 411                         len--;
 412                 }
 413                 if (len == 0)
 414                         continue;
 415
 416                 /* break up the line into parameter & value.
 417                  * will need to eat a little whitespace possibly */
 418                 param = buf;
 419                 if (!(ptr = strchr_m (buf, '=')))
 420                         continue;
 421
 422                 val = ptr+1;
 423                 *ptr = '\0';
 424
 425                 /* eat leading white space */
 426                 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
 427                         val++;
 428
 429                 if (strwicmp("password", param) == 0) {
 430                         set_cmdline_auth_info_password(auth_info, val);
 431                 } else if (strwicmp("username", param) == 0) {
 432                         set_cmdline_auth_info_username(auth_info, val);
 433                 } else if (strwicmp("domain", param) == 0) {
 434                         set_global_myworkgroup(val);
 435                 }
 436                 memset(buf, 0, sizeof(buf));
 437         }
 438         x_fclose(auth);
 439 }
 440
 441 /* Handle command line options:
 442  *              -U,--user
 443  *              -A,--authentication-file
 444  *              -k,--use-kerberos
 445  *              -N,--no-pass
 446  *              -S,--signing
 447  *              -P --machine-pass
 448  *              -e --encrypt
 449  */
 450
 451
 452 static void popt_common_credentials_callback(poptContext con,
 453                                         enum poptCallbackReason reason,
 454                                         const struct poptOption *opt,
 455                                         const char *arg, const void *data)
 456 {
 457         struct user_auth_info *auth_info = talloc_get_type_abort(
 458                 *((const char **)data), struct user_auth_info);
 459         char *p;
 460
 461         if (reason == POPT_CALLBACK_REASON_PRE) {
 462                 set_cmdline_auth_info_username(auth_info, "GUEST");
 463
 464                 if (getenv("LOGNAME")) {
 465                         set_cmdline_auth_info_username(auth_info,
 466                                                        getenv("LOGNAME"));
 467                 }
 468
 469                 if (getenv("USER")) {
 470                         char *puser = SMB_STRDUP(getenv("USER"));
 471                         if (!puser) {
 472                                 exit(ENOMEM);
 473                         }
 474                         set_cmdline_auth_info_username(auth_info, puser);
 475
 476                         if ((p = strchr_m(puser,'%'))) {
 477                                 size_t len;
 478                                 *p = 0;
 479                                 len = strlen(p+1);
 480                                 set_cmdline_auth_info_password(auth_info, p+1);
 481                                 memset(strchr_m(getenv("USER"),'%')+1,'X',len);
 482                         }
 483                         SAFE_FREE(puser);
 484                 }
 485
 486                 if (getenv("PASSWD")) {
 487                         set_cmdline_auth_info_password(auth_info,
 488                                                        getenv("PASSWD"));
 489                 }
 490
 491                 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
 492                         get_password_file(auth_info);
 493                 }
 494
 495                 return;
 496         }
 497
 498         switch(opt->val) {
 499         case 'U':
 500                 {
 501                         char *lp;
 502                         char *puser = SMB_STRDUP(arg);
 503
 504                         if ((lp=strchr_m(puser,'%'))) {
 505                                 size_t len;
 506                                 *lp = 0;
 507                                 set_cmdline_auth_info_username(auth_info,
 508                                                                puser);
 509                                 set_cmdline_auth_info_password(auth_info,
 510                                                                lp+1);
 511                                 len = strlen(lp+1);
 512                                 memset(strchr_m(arg,'%')+1,'X',len);
 513                         } else {
 514                                 set_cmdline_auth_info_username(auth_info,
 515                                                                puser);
 516                         }
 517                         SAFE_FREE(puser);
 518                 }
 519                 break;
 520
 521         case 'A':
 522                 get_credentials_file(auth_info, arg);
 523                 break;
 524
 525         case 'k':
 526 #ifndef HAVE_KRB5
 527                 d_printf("No kerberos support compiled in\n");
 528                 exit(1);
 529 #else
 530                 set_cmdline_auth_info_use_krb5_ticket(auth_info);
 531 #endif
 532                 break;
 533
 534         case 'S':
 535                 if (!set_cmdline_auth_info_signing_state(auth_info, arg)) {
 536                         fprintf(stderr, "Unknown signing option %s\n", arg );
 537                         exit(1);
 538                 }
 539                 break;
 540         case 'P':
 541                 set_cmdline_auth_info_use_machine_account(auth_info);
 542                 break;
 543         case 'N':
 544                 set_cmdline_auth_info_password(auth_info, "");
 545                 break;
 546         case 'e':
 547                 set_cmdline_auth_info_smb_encrypt(auth_info);
 548                 break;
 549
 550         }
 551 }
 552
 553 static struct user_auth_info *global_auth_info;
 554
 555 void popt_common_set_auth_info(struct user_auth_info *auth_info)
 556 {
 557         global_auth_info = auth_info;
 558 }
 559
 560 struct poptOption popt_common_credentials[] = {
 561         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE,
 562           (void *)popt_common_credentials_callback, 0,
 563           (const char *)&global_auth_info },
 564         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "USERNAME" },
 565         { "no-pass", 'N', POPT_ARG_NONE, NULL, 'N', "Don't ask for a password" },
 566         { "kerberos", 'k', POPT_ARG_NONE, NULL, 'k', "Use kerberos (active directory) authentication" },
 567         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 568         { "signing", 'S', POPT_ARG_STRING, NULL, 'S', "Set the client signing state", "on|off|required" },
 569         {"machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password" },
 570         {"encrypt", 'e', POPT_ARG_NONE, NULL, 'e', "Encrypt SMB transport (UNIX extended servers only)" },
 571         POPT_TABLEEND
 572 };