source/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 pstring user_socket_options;
  37 extern BOOL AllowDebugChange;
  38 extern BOOL override_logfile;
  39
  40 struct user_auth_info cmdline_auth_info;
  41
  42 static void set_logfile(poptContext con, const char * arg)
  43 {
  44
  45         pstring logfile;
  46         const char *pname;
  47
  48         /* Find out basename of current program */
  49         pname = strrchr_m(poptGetInvocationName(con),'/');
  50
  51         if (!pname)
  52                 pname = poptGetInvocationName(con);
  53         else
  54                 pname++;
  55
  56         pstr_sprintf(logfile, "%s/log.%s", arg, pname);
  57         lp_set_logfile(logfile);
  58 }
  59
  60 static void popt_common_callback(poptContext con,
  61                            enum poptCallbackReason reason,
  62                            const struct poptOption *opt,
  63                            const char *arg, const void *data)
  64 {
  65
  66         if (reason == POPT_CALLBACK_REASON_PRE) {
  67                 set_logfile(con, dyn_LOGFILEBASE);
  68                 return;
  69         }
  70
  71         switch(opt->val) {
  72         case 'd':
  73                 if (arg) {
  74                         debug_parse_levels(arg);
  75                         AllowDebugChange = False;
  76                 }
  77                 break;
  78
  79         case 'V':
  80                 printf( "Version %s\n", SAMBA_VERSION_STRING);
  81                 exit(0);
  82                 break;
  83
  84         case 'O':
  85                 if (arg) {
  86                         pstrcpy(user_socket_options,arg);
  87                 }
  88                 break;
  89
  90         case 's':
  91                 if (arg) {
  92                         pstrcpy(dyn_CONFIGFILE, arg);
  93                 }
  94                 break;
  95
  96         case 'n':
  97                 if (arg) {
  98                         set_global_myname(arg);
  99                 }
 100                 break;
 101
 102         case 'l':
 103                 if (arg) {
 104                         set_logfile(con, arg);
 105                         override_logfile = True;
 106                         pstr_sprintf(dyn_LOGFILEBASE, "%s", arg);
 107                 }
 108                 break;
 109
 110         case 'i':
 111                 if (arg) {
 112                           set_global_scope(arg);
 113                 }
 114                 break;
 115
 116         case 'W':
 117                 if (arg) {
 118                         set_global_myworkgroup(arg);
 119                 }
 120                 break;
 121         }
 122 }
 123
 124 struct poptOption popt_common_connection[] = {
 125         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 126         { "socket-options", 'O', POPT_ARG_STRING, NULL, 'O', "socket options to use",
 127           "SOCKETOPTIONS" },
 128         { "netbiosname", 'n', POPT_ARG_STRING, NULL, 'n', "Primary netbios name", "NETBIOSNAME" },
 129         { "workgroup", 'W', POPT_ARG_STRING, NULL, 'W', "Set the workgroup name", "WORKGROUP" },
 130         { "scope", 'i', POPT_ARG_STRING, NULL, 'i', "Use this Netbios scope", "SCOPE" },
 131
 132         POPT_TABLEEND
 133 };
 134
 135 struct poptOption popt_common_samba[] = {
 136         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, (void *)popt_common_callback },
 137         { "debuglevel", 'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
 138         { "configfile", 's', POPT_ARG_STRING, NULL, 's', "Use alternate configuration file", "CONFIGFILE" },
 139         { "log-basename", 'l', POPT_ARG_STRING, NULL, 'l', "Base name for log files", "LOGFILEBASE" },
 140         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 141         POPT_TABLEEND
 142 };
 143
 144 struct poptOption popt_common_version[] = {
 145         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 146         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 147         POPT_TABLEEND
 148 };
 149
 150
 151 /* Handle command line options:
 152  *              --sbindir
 153  *              --bindir
 154  *              --swatdir
 155  *              --lmhostsfile
 156  *              --libdir
 157  *              --shlibext
 158  *              --lockdir
 159  *              --piddir
 160  *              --smb-passwd-file
 161  *              --private-dir
 162  */
 163
 164 enum dyn_item{
 165         DYN_SBINDIR = 1,
 166         DYN_BINDIR,
 167         DYN_SWATDIR,
 168         DYN_LMHOSTSFILE,
 169         DYN_LIBDIR,
 170         DYN_SHLIBEXT,
 171         DYN_LOCKDIR,
 172         DYN_PIDDIR,
 173         DYN_SMB_PASSWD_FILE,
 174         DYN_PRIVATE_DIR,
 175 };
 176
 177
 178 static void popt_dynconfig_callback(poptContext con,
 179                            enum poptCallbackReason reason,
 180                            const struct poptOption *opt,
 181                            const char *arg, const void *data)
 182 {
 183
 184         switch (opt->val) {
 185         case DYN_SBINDIR:
 186                 if (arg) {
 187                         dyn_SBINDIR = SMB_STRDUP(arg);
 188                 }
 189                 break;
 190
 191         case DYN_BINDIR:
 192                 if (arg) {
 193                         dyn_BINDIR = SMB_STRDUP(arg);
 194                 }
 195                 break;
 196
 197         case DYN_SWATDIR:
 198                 if (arg) {
 199                         dyn_SWATDIR = SMB_STRDUP(arg);
 200                 }
 201                 break;
 202
 203         case DYN_LMHOSTSFILE:
 204                 if (arg) {
 205                         pstrcpy(dyn_LMHOSTSFILE, arg);
 206                 }
 207                 break;
 208
 209         case DYN_LIBDIR:
 210                 if (arg) {
 211                         pstrcpy(dyn_LIBDIR, arg);
 212                 }
 213                 break;
 214
 215         case DYN_SHLIBEXT:
 216                 if (arg) {
 217                         fstrcpy(dyn_SHLIBEXT, arg);
 218                 }
 219                 break;
 220
 221         case DYN_LOCKDIR:
 222                 if (arg) {
 223                         pstrcpy(dyn_LOCKDIR, arg);
 224                 }
 225                 break;
 226
 227         case DYN_PIDDIR:
 228                 if (arg) {
 229                         pstrcpy(dyn_PIDDIR, arg);
 230                 }
 231                 break;
 232
 233         case DYN_SMB_PASSWD_FILE:
 234                 if (arg) {
 235                         pstrcpy(dyn_SMB_PASSWD_FILE, arg);
 236                 }
 237                 break;
 238
 239         case DYN_PRIVATE_DIR:
 240                 if (arg) {
 241                         pstrcpy(dyn_PRIVATE_DIR, arg);
 242                 }
 243                 break;
 244
 245         }
 246 }
 247
 248 const struct poptOption popt_common_dynconfig[] = {
 249
 250         { NULL, '\0', POPT_ARG_CALLBACK, (void *)popt_dynconfig_callback },
 251
 252         { "sbindir", '\0' , POPT_ARG_STRING, NULL, DYN_SBINDIR,
 253             "Path to sbin directory", "SBINDIR" },
 254         { "bindir", '\0' , POPT_ARG_STRING, NULL, DYN_BINDIR,
 255             "Path to bin directory", "BINDIR" },
 256         { "swatdir", '\0' , POPT_ARG_STRING, NULL, DYN_SWATDIR,
 257             "Path to SWAT installation directory", "SWATDIR" },
 258         { "lmhostsfile", '\0' , POPT_ARG_STRING, NULL, DYN_LMHOSTSFILE,
 259             "Path to lmhosts file", "LMHOSTSFILE" },
 260         { "libdir", '\0' , POPT_ARG_STRING, NULL, DYN_LIBDIR,
 261             "Path to shared library directory", "LIBDIR" },
 262         { "shlibext", '\0' , POPT_ARG_STRING, NULL, DYN_SHLIBEXT,
 263             "Shared library extension", "SHLIBEXT" },
 264         { "lockdir", '\0' , POPT_ARG_STRING, NULL, DYN_LOCKDIR,
 265             "Path to lock file directory", "LOCKDIR" },
 266         { "piddir", '\0' , POPT_ARG_STRING, NULL, DYN_PIDDIR,
 267             "Path to PID file directory", "PIDDIR" },
 268         { "smb-passwd-file", '\0' , POPT_ARG_STRING, NULL, DYN_SMB_PASSWD_FILE,
 269             "Path to smbpasswd file", "SMB_PASSWD_FILE" },
 270         { "private-dir", '\0' , POPT_ARG_STRING, NULL, DYN_PRIVATE_DIR,
 271             "Path to private data directory", "PRIVATE_DIR" },
 272
 273         POPT_TABLEEND
 274 };
 275
 276 /****************************************************************************
 277  * get a password from a a file or file descriptor
 278  * exit on failure
 279  * ****************************************************************************/
 280 static void get_password_file(struct user_auth_info *a)
 281 {
 282         int fd = -1;
 283         char *p;
 284         BOOL close_it = False;
 285         pstring spec;
 286         char pass[128];
 287
 288         if ((p = getenv("PASSWD_FD")) != NULL) {
 289                 pstrcpy(spec, "descriptor ");
 290                 pstrcat(spec, p);
 291                 sscanf(p, "%d", &fd);
 292                 close_it = False;
 293         } else if ((p = getenv("PASSWD_FILE")) != NULL) {
 294                 fd = sys_open(p, O_RDONLY, 0);
 295                 pstrcpy(spec, p);
 296                 if (fd < 0) {
 297                         fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
 298                                         spec, strerror(errno));
 299                         exit(1);
 300                 }
 301                 close_it = True;
 302         }
 303
 304         for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
 305                 p && p - pass < sizeof(pass);) {
 306                 switch (read(fd, p, 1)) {
 307                 case 1:
 308                         if (*p != '\n' && *p != '\0') {
 309                                 *++p = '\0'; /* advance p, and null-terminate pass */
 310                                 break;
 311                         }
 312                 case 0:
 313                         if (p - pass) {
 314                                 *p = '\0'; /* null-terminate it, just in case... */
 315                                 p = NULL; /* then force the loop condition to become false */
 316                                 break;
 317                         } else {
 318                                 fprintf(stderr, "Error reading password from file %s: %s\n",
 319                                                 spec, "empty password\n");
 320                                 exit(1);
 321                         }
 322
 323                 default:
 324                         fprintf(stderr, "Error reading password from file %s: %s\n",
 325                                         spec, strerror(errno));
 326                         exit(1);
 327                 }
 328         }
 329         pstrcpy(a->password, pass);
 330         if (close_it)
 331                 close(fd);
 332 }
 333
 334 static void get_credentials_file(const char *file, struct user_auth_info *info)
 335 {
 336         XFILE *auth;
 337         fstring buf;
 338         uint16 len = 0;
 339         char *ptr, *val, *param;
 340
 341         if ((auth=x_fopen(file, O_RDONLY, 0)) == NULL)
 342         {
 343                 /* fail if we can't open the credentials file */
 344                 d_printf("ERROR: Unable to open credentials file!\n");
 345                 exit(-1);
 346         }
 347
 348         while (!x_feof(auth))
 349         {
 350                 /* get a line from the file */
 351                 if (!x_fgets(buf, sizeof(buf), auth))
 352                         continue;
 353                 len = strlen(buf);
 354
 355                 if ((len) && (buf[len-1]=='\n'))
 356                 {
 357                         buf[len-1] = '\0';
 358                         len--;
 359                 }
 360                 if (len == 0)
 361                         continue;
 362
 363                 /* break up the line into parameter & value.
 364                  * will need to eat a little whitespace possibly */
 365                 param = buf;
 366                 if (!(ptr = strchr_m (buf, '=')))
 367                         continue;
 368
 369                 val = ptr+1;
 370                 *ptr = '\0';
 371
 372                 /* eat leading white space */
 373                 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
 374                         val++;
 375
 376                 if (strwicmp("password", param) == 0)
 377                 {
 378                         pstrcpy(info->password, val);
 379                         info->got_pass = True;
 380                 }
 381                 else if (strwicmp("username", param) == 0)
 382                         pstrcpy(info->username, val);
 383                 else if (strwicmp("domain", param) == 0)
 384                         set_global_myworkgroup(val);
 385                 memset(buf, 0, sizeof(buf));
 386         }
 387         x_fclose(auth);
 388 }
 389
 390 /* Handle command line options:
 391  *              -U,--user
 392  *              -A,--authentication-file
 393  *              -k,--use-kerberos
 394  *              -N,--no-pass
 395  *              -S,--signing
 396  *              -P --machine-pass
 397  */
 398
 399
 400 static void popt_common_credentials_callback(poptContext con,
 401                                         enum poptCallbackReason reason,
 402                                         const struct poptOption *opt,
 403                                         const char *arg, const void *data)
 404 {
 405         char *p;
 406
 407         if (reason == POPT_CALLBACK_REASON_PRE) {
 408                 cmdline_auth_info.use_kerberos = False;
 409                 cmdline_auth_info.got_pass = False;
 410                 cmdline_auth_info.signing_state = Undefined;
 411                 pstrcpy(cmdline_auth_info.username, "GUEST");
 412
 413                 if (getenv("LOGNAME"))pstrcpy(cmdline_auth_info.username,getenv("LOGNAME"));
 414
 415                 if (getenv("USER")) {
 416                         pstrcpy(cmdline_auth_info.username,getenv("USER"));
 417
 418                         if ((p = strchr_m(cmdline_auth_info.username,'%'))) {
 419                                 *p = 0;
 420                                 pstrcpy(cmdline_auth_info.password,p+1);
 421                                 cmdline_auth_info.got_pass = True;
 422                                 memset(strchr_m(getenv("USER"),'%')+1,'X',strlen(cmdline_auth_info.password));
 423                         }
 424                 }
 425
 426                 if (getenv("PASSWD")) {
 427                         pstrcpy(cmdline_auth_info.password,getenv("PASSWD"));
 428                         cmdline_auth_info.got_pass = True;
 429                 }
 430
 431                 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
 432                         get_password_file(&cmdline_auth_info);
 433                         cmdline_auth_info.got_pass = True;
 434                 }
 435
 436                 return;
 437         }
 438
 439         switch(opt->val) {
 440         case 'U':
 441                 {
 442                         char *lp;
 443
 444                         pstrcpy(cmdline_auth_info.username,arg);
 445                         if ((lp=strchr_m(cmdline_auth_info.username,'%'))) {
 446                                 *lp = 0;
 447                                 pstrcpy(cmdline_auth_info.password,lp+1);
 448                                 cmdline_auth_info.got_pass = True;
 449                                 memset(strchr_m(arg,'%')+1,'X',strlen(cmdline_auth_info.password));
 450                         }
 451                 }
 452                 break;
 453
 454         case 'A':
 455                 get_credentials_file(arg, &cmdline_auth_info);
 456                 break;
 457
 458         case 'k':
 459 #ifndef HAVE_KRB5
 460                 d_printf("No kerberos support compiled in\n");
 461                 exit(1);
 462 #else
 463                 cmdline_auth_info.use_kerberos = True;
 464                 cmdline_auth_info.got_pass = True;
 465 #endif
 466                 break;
 467
 468         case 'S':
 469                 {
 470                         cmdline_auth_info.signing_state = -1;
 471                         if (strequal(arg, "off") || strequal(arg, "no") || strequal(arg, "false"))
 472                                 cmdline_auth_info.signing_state = False;
 473                         else if (strequal(arg, "on") || strequal(arg, "yes") || strequal(arg, "true") ||
 474                                         strequal(arg, "auto") )
 475                                 cmdline_auth_info.signing_state = True;
 476                         else if (strequal(arg, "force") || strequal(arg, "required") || strequal(arg, "forced"))
 477                                 cmdline_auth_info.signing_state = Required;
 478                         else {
 479                                 fprintf(stderr, "Unknown signing option %s\n", arg );
 480                                 exit(1);
 481                         }
 482                 }
 483                 break;
 484         case 'P':
 485                 {
 486                         char *opt_password = NULL;
 487                         /* it is very useful to be able to make ads queries as the
 488                            machine account for testing purposes and for domain leave */
 489
 490                         if (!secrets_init()) {
 491                                 d_printf("ERROR: Unable to open secrets database\n");
 492                                 exit(1);
 493                         }
 494
 495                         opt_password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
 496
 497                         if (!opt_password) {
 498                                 d_printf("ERROR: Unable to fetch machine password\n");
 499                                 exit(1);
 500                         }
 501                         pstr_sprintf(cmdline_auth_info.username, "%s$",
 502                                      global_myname());
 503                         pstrcpy(cmdline_auth_info.password,opt_password);
 504                         SAFE_FREE(opt_password);
 505
 506                         /* machine accounts only work with kerberos */
 507                         cmdline_auth_info.use_kerberos = True;
 508                         cmdline_auth_info.got_pass = True;
 509                 }
 510                 break;
 511         }
 512 }
 513
 514
 515
 516 struct poptOption popt_common_credentials[] = {
 517         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, (void *)popt_common_credentials_callback },
 518         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "USERNAME" },
 519         { "no-pass", 'N', POPT_ARG_NONE, &cmdline_auth_info.got_pass, 0, "Don't ask for a password" },
 520         { "kerberos", 'k', POPT_ARG_NONE, &cmdline_auth_info.use_kerberos, 'k', "Use kerberos (active directory) authentication" },
 521         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 522         { "signing", 'S', POPT_ARG_STRING, NULL, 'S', "Set the client signing state", "on|off|required" },
 523         {"machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password" },
 524         POPT_TABLEEND
 525 };