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 *logfile = 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(&logfile, "%s/log.%s", arg, pname) < 0) {
  54                 return;
  55         }
  56         lp_set_logfile(logfile);
  57         SAFE_FREE(logfile);
  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, (void *)popt_common_callback },
 170         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 171         POPT_TABLEEND
 172 };
 173
 174
 175 /* Handle command line options:
 176  *              --sbindir
 177  *              --bindir
 178  *              --swatdir
 179  *              --lmhostsfile
 180  *              --libdir
 181  *              --shlibext
 182  *              --lockdir
 183  *              --piddir
 184  *              --smb-passwd-file
 185  *              --private-dir
 186  */
 187
 188 enum dyn_item{
 189         DYN_SBINDIR = 1,
 190         DYN_BINDIR,
 191         DYN_SWATDIR,
 192         DYN_LMHOSTSFILE,
 193         DYN_LIBDIR,
 194         DYN_SHLIBEXT,
 195         DYN_LOCKDIR,
 196         DYN_PIDDIR,
 197         DYN_SMB_PASSWD_FILE,
 198         DYN_PRIVATE_DIR,
 199 };
 200
 201
 202 static void popt_dynconfig_callback(poptContext con,
 203                            enum poptCallbackReason reason,
 204                            const struct poptOption *opt,
 205                            const char *arg, const void *data)
 206 {
 207
 208         switch (opt->val) {
 209         case DYN_SBINDIR:
 210                 if (arg) {
 211                         set_dyn_SBINDIR(arg);
 212                 }
 213                 break;
 214
 215         case DYN_BINDIR:
 216                 if (arg) {
 217                         set_dyn_BINDIR(arg);
 218                 }
 219                 break;
 220
 221         case DYN_SWATDIR:
 222                 if (arg) {
 223                         set_dyn_SWATDIR(arg);
 224                 }
 225                 break;
 226
 227         case DYN_LMHOSTSFILE:
 228                 if (arg) {
 229                         set_dyn_LMHOSTSFILE(arg);
 230                 }
 231                 break;
 232
 233         case DYN_LIBDIR:
 234                 if (arg) {
 235                         set_dyn_LIBDIR(arg);
 236                 }
 237                 break;
 238
 239         case DYN_SHLIBEXT:
 240                 if (arg) {
 241                         set_dyn_SHLIBEXT(arg);
 242                 }
 243                 break;
 244
 245         case DYN_LOCKDIR:
 246                 if (arg) {
 247                         set_dyn_LOCKDIR(arg);
 248                 }
 249                 break;
 250
 251         case DYN_PIDDIR:
 252                 if (arg) {
 253                         set_dyn_PIDDIR(arg);
 254                 }
 255                 break;
 256
 257         case DYN_SMB_PASSWD_FILE:
 258                 if (arg) {
 259                         set_dyn_SMB_PASSWD_FILE(arg);
 260                 }
 261                 break;
 262
 263         case DYN_PRIVATE_DIR:
 264                 if (arg) {
 265                         set_dyn_PRIVATE_DIR(arg);
 266                 }
 267                 break;
 268
 269         }
 270 }
 271
 272 const struct poptOption popt_common_dynconfig[] = {
 273
 274         { NULL, '\0', POPT_ARG_CALLBACK, (void *)popt_dynconfig_callback },
 275
 276         { "sbindir", '\0' , POPT_ARG_STRING, NULL, DYN_SBINDIR,
 277             "Path to sbin directory", "SBINDIR" },
 278         { "bindir", '\0' , POPT_ARG_STRING, NULL, DYN_BINDIR,
 279             "Path to bin directory", "BINDIR" },
 280         { "swatdir", '\0' , POPT_ARG_STRING, NULL, DYN_SWATDIR,
 281             "Path to SWAT installation directory", "SWATDIR" },
 282         { "lmhostsfile", '\0' , POPT_ARG_STRING, NULL, DYN_LMHOSTSFILE,
 283             "Path to lmhosts file", "LMHOSTSFILE" },
 284         { "libdir", '\0' , POPT_ARG_STRING, NULL, DYN_LIBDIR,
 285             "Path to shared library directory", "LIBDIR" },
 286         { "shlibext", '\0' , POPT_ARG_STRING, NULL, DYN_SHLIBEXT,
 287             "Shared library extension", "SHLIBEXT" },
 288         { "lockdir", '\0' , POPT_ARG_STRING, NULL, DYN_LOCKDIR,
 289             "Path to lock file directory", "LOCKDIR" },
 290         { "piddir", '\0' , POPT_ARG_STRING, NULL, DYN_PIDDIR,
 291             "Path to PID file directory", "PIDDIR" },
 292         { "smb-passwd-file", '\0' , POPT_ARG_STRING, NULL, DYN_SMB_PASSWD_FILE,
 293             "Path to smbpasswd file", "SMB_PASSWD_FILE" },
 294         { "private-dir", '\0' , POPT_ARG_STRING, NULL, DYN_PRIVATE_DIR,
 295             "Path to private data directory", "PRIVATE_DIR" },
 296
 297         POPT_TABLEEND
 298 };
 299
 300 /****************************************************************************
 301  * get a password from a a file or file descriptor
 302  * exit on failure
 303  * ****************************************************************************/
 304
 305 static void get_password_file(void)
 306 {
 307         int fd = -1;
 308         char *p;
 309         bool close_it = False;
 310         char *spec = NULL;
 311         char pass[128];
 312
 313         if ((p = getenv("PASSWD_FD")) != NULL) {
 314                 if (asprintf(&spec, "descriptor %s", p) < 0) {
 315                         return;
 316                 }
 317                 sscanf(p, "%d", &fd);
 318                 close_it = false;
 319         } else if ((p = getenv("PASSWD_FILE")) != NULL) {
 320                 fd = sys_open(p, O_RDONLY, 0);
 321                 spec = SMB_STRDUP(p);
 322                 if (fd < 0) {
 323                         fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
 324                                         spec, strerror(errno));
 325                         exit(1);
 326                 }
 327                 close_it = True;
 328         }
 329
 330         for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
 331                 p && p - pass < sizeof(pass);) {
 332                 switch (read(fd, p, 1)) {
 333                 case 1:
 334                         if (*p != '\n' && *p != '\0') {
 335                                 *++p = '\0'; /* advance p, and null-terminate pass */
 336                                 break;
 337                         }
 338                 case 0:
 339                         if (p - pass) {
 340                                 *p = '\0'; /* null-terminate it, just in case... */
 341                                 p = NULL; /* then force the loop condition to become false */
 342                                 break;
 343                         } else {
 344                                 fprintf(stderr, "Error reading password from file %s: %s\n",
 345                                                 spec, "empty password\n");
 346                                 SAFE_FREE(spec);
 347                                 exit(1);
 348                         }
 349
 350                 default:
 351                         fprintf(stderr, "Error reading password from file %s: %s\n",
 352                                         spec, strerror(errno));
 353                         SAFE_FREE(spec);
 354                         exit(1);
 355                 }
 356         }
 357         SAFE_FREE(spec);
 358
 359         set_cmdline_auth_info_password(pass);
 360         if (close_it) {
 361                 close(fd);
 362         }
 363 }
 364
 365 static void get_credentials_file(const char *file)
 366 {
 367         XFILE *auth;
 368         fstring buf;
 369         uint16 len = 0;
 370         char *ptr, *val, *param;
 371
 372         if ((auth=x_fopen(file, O_RDONLY, 0)) == NULL)
 373         {
 374                 /* fail if we can't open the credentials file */
 375                 d_printf("ERROR: Unable to open credentials file!\n");
 376                 exit(-1);
 377         }
 378
 379         while (!x_feof(auth))
 380         {
 381                 /* get a line from the file */
 382                 if (!x_fgets(buf, sizeof(buf), auth))
 383                         continue;
 384                 len = strlen(buf);
 385
 386                 if ((len) && (buf[len-1]=='\n'))
 387                 {
 388                         buf[len-1] = '\0';
 389                         len--;
 390                 }
 391                 if (len == 0)
 392                         continue;
 393
 394                 /* break up the line into parameter & value.
 395                  * will need to eat a little whitespace possibly */
 396                 param = buf;
 397                 if (!(ptr = strchr_m (buf, '=')))
 398                         continue;
 399
 400                 val = ptr+1;
 401                 *ptr = '\0';
 402
 403                 /* eat leading white space */
 404                 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
 405                         val++;
 406
 407                 if (strwicmp("password", param) == 0) {
 408                         set_cmdline_auth_info_password(val);
 409                 } else if (strwicmp("username", param) == 0) {
 410                         set_cmdline_auth_info_username(val);
 411                 } else if (strwicmp("domain", param) == 0) {
 412                         set_global_myworkgroup(val);
 413                 }
 414                 memset(buf, 0, sizeof(buf));
 415         }
 416         x_fclose(auth);
 417 }
 418
 419 /* Handle command line options:
 420  *              -U,--user
 421  *              -A,--authentication-file
 422  *              -k,--use-kerberos
 423  *              -N,--no-pass
 424  *              -S,--signing
 425  *              -P --machine-pass
 426  *              -e --encrypt
 427  */
 428
 429
 430 static void popt_common_credentials_callback(poptContext con,
 431                                         enum poptCallbackReason reason,
 432                                         const struct poptOption *opt,
 433                                         const char *arg, const void *data)
 434 {
 435         char *p;
 436
 437         if (reason == POPT_CALLBACK_REASON_PRE) {
 438                 set_cmdline_auth_info_username("GUEST");
 439
 440                 if (getenv("LOGNAME")) {
 441                         set_cmdline_auth_info_username(getenv("LOGNAME"));
 442                 }
 443
 444                 if (getenv("USER")) {
 445                         char *puser = SMB_STRDUP(getenv("USER"));
 446                         if (!puser) {
 447                                 exit(ENOMEM);
 448                         }
 449                         set_cmdline_auth_info_username(puser);
 450
 451                         if ((p = strchr_m(puser,'%'))) {
 452                                 size_t len;
 453                                 *p = 0;
 454                                 len = strlen(p+1);
 455                                 set_cmdline_auth_info_password(p+1);
 456                                 memset(strchr_m(getenv("USER"),'%')+1,'X',len);
 457                         }
 458                         SAFE_FREE(puser);
 459                 }
 460
 461                 if (getenv("PASSWD")) {
 462                         set_cmdline_auth_info_password(getenv("PASSWD"));
 463                 }
 464
 465                 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
 466                         get_password_file();
 467                 }
 468
 469                 return;
 470         }
 471
 472         switch(opt->val) {
 473         case 'U':
 474                 {
 475                         char *lp;
 476                         char *puser = SMB_STRDUP(arg);
 477
 478                         if ((lp=strchr_m(puser,'%'))) {
 479                                 size_t len;
 480                                 *lp = 0;
 481                                 set_cmdline_auth_info_username(puser);
 482                                 set_cmdline_auth_info_password(lp+1);
 483                                 len = strlen(lp+1);
 484                                 memset(strchr_m(arg,'%')+1,'X',len);
 485                         } else {
 486                                 set_cmdline_auth_info_username(puser);
 487                         }
 488                         SAFE_FREE(puser);
 489                 }
 490                 break;
 491
 492         case 'A':
 493                 get_credentials_file(arg);
 494                 break;
 495
 496         case 'k':
 497 #ifndef HAVE_KRB5
 498                 d_printf("No kerberos support compiled in\n");
 499                 exit(1);
 500 #else
 501                 set_cmdline_auth_info_use_krb5_ticket();
 502 #endif
 503                 break;
 504
 505         case 'S':
 506                 if (!set_cmdline_auth_info_signing_state(arg)) {
 507                         fprintf(stderr, "Unknown signing option %s\n", arg );
 508                         exit(1);
 509                 }
 510                 break;
 511         case 'P':
 512                 {
 513                         char *opt_password = NULL;
 514                         char *pwd = NULL;
 515
 516                         /* it is very useful to be able to make ads queries as the
 517                            machine account for testing purposes and for domain leave */
 518
 519                         if (!secrets_init()) {
 520                                 d_printf("ERROR: Unable to open secrets database\n");
 521                                 exit(1);
 522                         }
 523
 524                         opt_password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
 525
 526                         if (!opt_password) {
 527                                 d_printf("ERROR: Unable to fetch machine password\n");
 528                                 exit(1);
 529                         }
 530                         if (asprintf(&pwd, "%s$", global_myname()) < 0) {
 531                                 exit(ENOMEM);
 532                         }
 533                         set_cmdline_auth_info_username(pwd);
 534                         set_cmdline_auth_info_password(opt_password);
 535                         SAFE_FREE(pwd);
 536                         SAFE_FREE(opt_password);
 537
 538                         /* machine accounts only work with kerberos */
 539                         set_cmdline_auth_info_use_krb5_ticket();
 540                 }
 541                 break;
 542         case 'N':
 543                 set_cmdline_auth_info_password("");
 544                 break;
 545         case 'e':
 546                 set_cmdline_auth_info_smb_encrypt();
 547                 break;
 548
 549         }
 550 }
 551
 552 struct poptOption popt_common_credentials[] = {
 553         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, (void *)popt_common_credentials_callback },
 554         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "USERNAME" },
 555         { "no-pass", 'N', POPT_ARG_NONE, NULL, 'N', "Don't ask for a password" },
 556         { "kerberos", 'k', POPT_ARG_NONE, NULL, 'k', "Use kerberos (active directory) authentication" },
 557         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 558         { "signing", 'S', POPT_ARG_STRING, NULL, 'S', "Set the client signing state", "on|off|required" },
 559         {"machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password" },
 560         {"encrypt", 'e', POPT_ARG_NONE, NULL, 'e', "Encrypt SMB transport (UNIX extended servers only)" },
 561         POPT_TABLEEND
 562 };