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 2 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, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25
  26 /* Handle command line options:
  27  *              -d,--debuglevel
  28  *              -s,--configfile
  29  *              -O,--socket-options
  30  *              -V,--version
  31  *              -l,--log-base
  32  *              -n,--netbios-name
  33  *              -W,--workgroup
  34  *              -i,--scope
  35  */
  36
  37 extern pstring user_socket_options;
  38 extern BOOL AllowDebugChange;
  39 extern BOOL override_logfile;
  40
  41 struct user_auth_info cmdline_auth_info;
  42
  43 static void set_logfile(poptContext con, const char * arg)
  44 {
  45
  46         pstring logfile;
  47         const char *pname;
  48
  49         /* Find out basename of current program */
  50         pname = strrchr_m(poptGetInvocationName(con),'/');
  51
  52         if (!pname)
  53                 pname = poptGetInvocationName(con);
  54         else
  55                 pname++;
  56
  57         pstr_sprintf(logfile, "%s/log.%s", arg, pname);
  58         lp_set_logfile(logfile);
  59 }
  60
  61 static void popt_common_callback(poptContext con,
  62                            enum poptCallbackReason reason,
  63                            const struct poptOption *opt,
  64                            const char *arg, const void *data)
  65 {
  66
  67         if (reason == POPT_CALLBACK_REASON_PRE) {
  68                 set_logfile(con, dyn_LOGFILEBASE);
  69                 return;
  70         }
  71
  72         switch(opt->val) {
  73         case 'd':
  74                 if (arg) {
  75                         debug_parse_levels(arg);
  76                         AllowDebugChange = False;
  77                 }
  78                 break;
  79
  80         case 'V':
  81                 printf( "Version %s\n", SAMBA_VERSION_STRING);
  82                 exit(0);
  83                 break;
  84
  85         case 'O':
  86                 if (arg) {
  87                         pstrcpy(user_socket_options,arg);
  88                 }
  89                 break;
  90
  91         case 's':
  92                 if (arg) {
  93                         pstrcpy(dyn_CONFIGFILE, arg);
  94                 }
  95                 break;
  96
  97         case 'n':
  98                 if (arg) {
  99                         set_global_myname(arg);
 100                 }
 101                 break;
 102
 103         case 'l':
 104                 if (arg) {
 105                         set_logfile(con, arg);
 106                         override_logfile = True;
 107                         pstr_sprintf(dyn_LOGFILEBASE, "%s", arg);
 108                 }
 109                 break;
 110
 111         case 'i':
 112                 if (arg) {
 113                           set_global_scope(arg);
 114                 }
 115                 break;
 116
 117         case 'W':
 118                 if (arg) {
 119                         set_global_myworkgroup(arg);
 120                 }
 121                 break;
 122         }
 123 }
 124
 125 struct poptOption popt_common_connection[] = {
 126         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 127         { "socket-options", 'O', POPT_ARG_STRING, NULL, 'O', "socket options to use",
 128           "SOCKETOPTIONS" },
 129         { "netbiosname", 'n', POPT_ARG_STRING, NULL, 'n', "Primary netbios name", "NETBIOSNAME" },
 130         { "workgroup", 'W', POPT_ARG_STRING, NULL, 'W', "Set the workgroup name", "WORKGROUP" },
 131         { "scope", 'i', POPT_ARG_STRING, NULL, 'i', "Use this Netbios scope", "SCOPE" },
 132
 133         POPT_TABLEEND
 134 };
 135
 136 struct poptOption popt_common_samba[] = {
 137         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, (void *)popt_common_callback },
 138         { "debuglevel", 'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
 139         { "configfile", 's', POPT_ARG_STRING, NULL, 's', "Use alternate configuration file", "CONFIGFILE" },
 140         { "log-basename", 'l', POPT_ARG_STRING, NULL, 'l', "Base name for log files", "LOGFILEBASE" },
 141         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 142         POPT_TABLEEND
 143 };
 144
 145 struct poptOption popt_common_version[] = {
 146         { NULL, 0, POPT_ARG_CALLBACK, (void *)popt_common_callback },
 147         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 148         POPT_TABLEEND
 149 };
 150
 151
 152 /* Handle command line options:
 153  *              --sbindir
 154  *              --bindir
 155  *              --swatdir
 156  *              --lmhostsfile
 157  *              --libdir
 158  *              --shlibext
 159  *              --lockdir
 160  *              --piddir
 161  *              --smb-passwd-file
 162  *              --private-dir
 163  */
 164
 165 enum dyn_item{
 166         DYN_SBINDIR = 1,
 167         DYN_BINDIR,
 168         DYN_SWATDIR,
 169         DYN_LMHOSTSFILE,
 170         DYN_LIBDIR,
 171         DYN_SHLIBEXT,
 172         DYN_LOCKDIR,
 173         DYN_PIDDIR,
 174         DYN_SMB_PASSWD_FILE,
 175         DYN_PRIVATE_DIR,
 176 };
 177
 178
 179 static void popt_dynconfig_callback(poptContext con,
 180                            enum poptCallbackReason reason,
 181                            const struct poptOption *opt,
 182                            const char *arg, const void *data)
 183 {
 184
 185         switch (opt->val) {
 186         case DYN_SBINDIR:
 187                 if (arg) {
 188                         dyn_SBINDIR = SMB_STRDUP(arg);
 189                 }
 190                 break;
 191
 192         case DYN_BINDIR:
 193                 if (arg) {
 194                         dyn_BINDIR = SMB_STRDUP(arg);
 195                 }
 196                 break;
 197
 198         case DYN_SWATDIR:
 199                 if (arg) {
 200                         dyn_SWATDIR = SMB_STRDUP(arg);
 201                 }
 202                 break;
 203
 204         case DYN_LMHOSTSFILE:
 205                 if (arg) {
 206                         pstrcpy(dyn_LMHOSTSFILE, arg);
 207                 }
 208                 break;
 209
 210         case DYN_LIBDIR:
 211                 if (arg) {
 212                         pstrcpy(dyn_LIBDIR, arg);
 213                 }
 214                 break;
 215
 216         case DYN_SHLIBEXT:
 217                 if (arg) {
 218                         fstrcpy(dyn_SHLIBEXT, arg);
 219                 }
 220                 break;
 221
 222         case DYN_LOCKDIR:
 223                 if (arg) {
 224                         pstrcpy(dyn_LOCKDIR, arg);
 225                 }
 226                 break;
 227
 228         case DYN_PIDDIR:
 229                 if (arg) {
 230                         pstrcpy(dyn_PIDDIR, arg);
 231                 }
 232                 break;
 233
 234         case DYN_SMB_PASSWD_FILE:
 235                 if (arg) {
 236                         pstrcpy(dyn_SMB_PASSWD_FILE, arg);
 237                 }
 238                 break;
 239
 240         case DYN_PRIVATE_DIR:
 241                 if (arg) {
 242                         pstrcpy(dyn_PRIVATE_DIR, arg);
 243                 }
 244                 break;
 245
 246         }
 247 }
 248
 249 const struct poptOption popt_common_dynconfig[] = {
 250
 251         { NULL, '\0', POPT_ARG_CALLBACK, (void *)popt_dynconfig_callback },
 252
 253         { "sbindir", '\0' , POPT_ARG_STRING, NULL, DYN_SBINDIR,
 254             "Path to sbin directory", "SBINDIR" },
 255         { "bindir", '\0' , POPT_ARG_STRING, NULL, DYN_BINDIR,
 256             "Path to bin directory", "BINDIR" },
 257         { "swatdir", '\0' , POPT_ARG_STRING, NULL, DYN_SWATDIR,
 258             "Path to SWAT installation directory", "SWATDIR" },
 259         { "lmhostsfile", '\0' , POPT_ARG_STRING, NULL, DYN_LMHOSTSFILE,
 260             "Path to lmhosts file", "LMHOSTSFILE" },
 261         { "libdir", '\0' , POPT_ARG_STRING, NULL, DYN_LIBDIR,
 262             "Path to shared library directory", "LIBDIR" },
 263         { "shlibext", '\0' , POPT_ARG_STRING, NULL, DYN_SHLIBEXT,
 264             "Shared library extension", "SHLIBEXT" },
 265         { "lockdir", '\0' , POPT_ARG_STRING, NULL, DYN_LOCKDIR,
 266             "Path to lock file directory", "LOCKDIR" },
 267         { "piddir", '\0' , POPT_ARG_STRING, NULL, DYN_PIDDIR,
 268             "Path to PID file directory", "PIDDIR" },
 269         { "smb-passwd-file", '\0' , POPT_ARG_STRING, NULL, DYN_SMB_PASSWD_FILE,
 270             "Path to smbpasswd file", "SMB_PASSWD_FILE" },
 271         { "private-dir", '\0' , POPT_ARG_STRING, NULL, DYN_PRIVATE_DIR,
 272             "Path to private data directory", "PRIVATE_DIR" },
 273
 274         POPT_TABLEEND
 275 };
 276
 277 /****************************************************************************
 278  * get a password from a a file or file descriptor
 279  * exit on failure
 280  * ****************************************************************************/
 281 static void get_password_file(struct user_auth_info *a)
 282 {
 283         int fd = -1;
 284         char *p;
 285         BOOL close_it = False;
 286         pstring spec;
 287         char pass[128];
 288
 289         if ((p = getenv("PASSWD_FD")) != NULL) {
 290                 pstrcpy(spec, "descriptor ");
 291                 pstrcat(spec, p);
 292                 sscanf(p, "%d", &fd);
 293                 close_it = False;
 294         } else if ((p = getenv("PASSWD_FILE")) != NULL) {
 295                 fd = sys_open(p, O_RDONLY, 0);
 296                 pstrcpy(spec, p);
 297                 if (fd < 0) {
 298                         fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
 299                                         spec, strerror(errno));
 300                         exit(1);
 301                 }
 302                 close_it = True;
 303         }
 304
 305         for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
 306                 p && p - pass < sizeof(pass);) {
 307                 switch (read(fd, p, 1)) {
 308                 case 1:
 309                         if (*p != '\n' && *p != '\0') {
 310                                 *++p = '\0'; /* advance p, and null-terminate pass */
 311                                 break;
 312                         }
 313                 case 0:
 314                         if (p - pass) {
 315                                 *p = '\0'; /* null-terminate it, just in case... */
 316                                 p = NULL; /* then force the loop condition to become false */
 317                                 break;
 318                         } else {
 319                                 fprintf(stderr, "Error reading password from file %s: %s\n",
 320                                                 spec, "empty password\n");
 321                                 exit(1);
 322                         }
 323
 324                 default:
 325                         fprintf(stderr, "Error reading password from file %s: %s\n",
 326                                         spec, strerror(errno));
 327                         exit(1);
 328                 }
 329         }
 330         pstrcpy(a->password, pass);
 331         if (close_it)
 332                 close(fd);
 333 }
 334
 335 static void get_credentials_file(const char *file, struct user_auth_info *info)
 336 {
 337         XFILE *auth;
 338         fstring buf;
 339         uint16 len = 0;
 340         char *ptr, *val, *param;
 341
 342         if ((auth=x_fopen(file, O_RDONLY, 0)) == NULL)
 343         {
 344                 /* fail if we can't open the credentials file */
 345                 d_printf("ERROR: Unable to open credentials file!\n");
 346                 exit(-1);
 347         }
 348
 349         while (!x_feof(auth))
 350         {
 351                 /* get a line from the file */
 352                 if (!x_fgets(buf, sizeof(buf), auth))
 353                         continue;
 354                 len = strlen(buf);
 355
 356                 if ((len) && (buf[len-1]=='\n'))
 357                 {
 358                         buf[len-1] = '\0';
 359                         len--;
 360                 }
 361                 if (len == 0)
 362                         continue;
 363
 364                 /* break up the line into parameter & value.
 365                  * will need to eat a little whitespace possibly */
 366                 param = buf;
 367                 if (!(ptr = strchr_m (buf, '=')))
 368                         continue;
 369
 370                 val = ptr+1;
 371                 *ptr = '\0';
 372
 373                 /* eat leading white space */
 374                 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
 375                         val++;
 376
 377                 if (strwicmp("password", param) == 0)
 378                 {
 379                         pstrcpy(info->password, val);
 380                         info->got_pass = True;
 381                 }
 382                 else if (strwicmp("username", param) == 0)
 383                         pstrcpy(info->username, val);
 384                 else if (strwicmp("domain", param) == 0)
 385                         set_global_myworkgroup(val);
 386                 memset(buf, 0, sizeof(buf));
 387         }
 388         x_fclose(auth);
 389 }
 390
 391 /* Handle command line options:
 392  *              -U,--user
 393  *              -A,--authentication-file
 394  *              -k,--use-kerberos
 395  *              -N,--no-pass
 396  *              -S,--signing
 397  *              -P --machine-pass
 398  */
 399
 400
 401 static void popt_common_credentials_callback(poptContext con,
 402                                         enum poptCallbackReason reason,
 403                                         const struct poptOption *opt,
 404                                         const char *arg, const void *data)
 405 {
 406         char *p;
 407
 408         if (reason == POPT_CALLBACK_REASON_PRE) {
 409                 cmdline_auth_info.use_kerberos = False;
 410                 cmdline_auth_info.got_pass = False;
 411                 cmdline_auth_info.signing_state = Undefined;
 412                 pstrcpy(cmdline_auth_info.username, "GUEST");
 413
 414                 if (getenv("LOGNAME"))pstrcpy(cmdline_auth_info.username,getenv("LOGNAME"));
 415
 416                 if (getenv("USER")) {
 417                         pstrcpy(cmdline_auth_info.username,getenv("USER"));
 418
 419                         if ((p = strchr_m(cmdline_auth_info.username,'%'))) {
 420                                 *p = 0;
 421                                 pstrcpy(cmdline_auth_info.password,p+1);
 422                                 cmdline_auth_info.got_pass = True;
 423                                 memset(strchr_m(getenv("USER"),'%')+1,'X',strlen(cmdline_auth_info.password));
 424                         }
 425                 }
 426
 427                 if (getenv("PASSWD")) {
 428                         pstrcpy(cmdline_auth_info.password,getenv("PASSWD"));
 429                         cmdline_auth_info.got_pass = True;
 430                 }
 431
 432                 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
 433                         get_password_file(&cmdline_auth_info);
 434                         cmdline_auth_info.got_pass = True;
 435                 }
 436
 437                 return;
 438         }
 439
 440         switch(opt->val) {
 441         case 'U':
 442                 {
 443                         char *lp;
 444
 445                         pstrcpy(cmdline_auth_info.username,arg);
 446                         if ((lp=strchr_m(cmdline_auth_info.username,'%'))) {
 447                                 *lp = 0;
 448                                 pstrcpy(cmdline_auth_info.password,lp+1);
 449                                 cmdline_auth_info.got_pass = True;
 450                                 memset(strchr_m(arg,'%')+1,'X',strlen(cmdline_auth_info.password));
 451                         }
 452                 }
 453                 break;
 454
 455         case 'A':
 456                 get_credentials_file(arg, &cmdline_auth_info);
 457                 break;
 458
 459         case 'k':
 460 #ifndef HAVE_KRB5
 461                 d_printf("No kerberos support compiled in\n");
 462                 exit(1);
 463 #else
 464                 cmdline_auth_info.use_kerberos = True;
 465                 cmdline_auth_info.got_pass = True;
 466 #endif
 467                 break;
 468
 469         case 'S':
 470                 {
 471                         cmdline_auth_info.signing_state = -1;
 472                         if (strequal(arg, "off") || strequal(arg, "no") || strequal(arg, "false"))
 473                                 cmdline_auth_info.signing_state = False;
 474                         else if (strequal(arg, "on") || strequal(arg, "yes") || strequal(arg, "true") ||
 475                                         strequal(arg, "auto") )
 476                                 cmdline_auth_info.signing_state = True;
 477                         else if (strequal(arg, "force") || strequal(arg, "required") || strequal(arg, "forced"))
 478                                 cmdline_auth_info.signing_state = Required;
 479                         else {
 480                                 fprintf(stderr, "Unknown signing option %s\n", arg );
 481                                 exit(1);
 482                         }
 483                 }
 484                 break;
 485         case 'P':
 486                 {
 487                         char *opt_password = NULL;
 488                         /* it is very useful to be able to make ads queries as the
 489                            machine account for testing purposes and for domain leave */
 490
 491                         if (!secrets_init()) {
 492                                 d_printf("ERROR: Unable to open secrets database\n");
 493                                 exit(1);
 494                         }
 495
 496                         opt_password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
 497
 498                         if (!opt_password) {
 499                                 d_printf("ERROR: Unable to fetch machine password\n");
 500                                 exit(1);
 501                         }
 502                         pstr_sprintf(cmdline_auth_info.username, "%s$",
 503                                      global_myname());
 504                         pstrcpy(cmdline_auth_info.password,opt_password);
 505                         SAFE_FREE(opt_password);
 506
 507                         /* machine accounts only work with kerberos */
 508                         cmdline_auth_info.use_kerberos = True;
 509                         cmdline_auth_info.got_pass = True;
 510                 }
 511                 break;
 512         }
 513 }
 514
 515
 516
 517 struct poptOption popt_common_credentials[] = {
 518         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, (void *)popt_common_credentials_callback },
 519         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "USERNAME" },
 520         { "no-pass", 'N', POPT_ARG_NONE, &cmdline_auth_info.got_pass, 0, "Don't ask for a password" },
 521         { "kerberos", 'k', POPT_ARG_NONE, &cmdline_auth_info.use_kerberos, 'k', "Use kerberos (active directory) authentication" },
 522         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 523         { "signing", 'S', POPT_ARG_STRING, NULL, 'S', "Set the client signing state", "on|off|required" },
 524         {"machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password" },
 525         POPT_TABLEEND
 526 };