source4/lib/cmdline/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
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  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
  37 enum {OPT_OPTION=1,OPT_LEAK_REPORT,OPT_LEAK_REPORT_FULL};
  38
  39 static struct cmdline_auth_info cmdline_auth_info;
  40
  41 static void popt_common_callback(poptContext con,
  42                            enum poptCallbackReason reason,
  43                            const struct poptOption *opt,
  44                            const char *arg, const void *data)
  45 {
  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         if (reason == POPT_CALLBACK_REASON_PRE) {
  57                 char *logfile = talloc_asprintf(NULL, "%s/log.%s", dyn_LOGFILEBASE, pname);
  58                 lp_set_cmdline("log file", logfile);
  59                 talloc_free(logfile);
  60                 return;
  61         }
  62
  63         switch(opt->val) {
  64         case 'd':
  65                 lp_set_cmdline("log level", arg);
  66                 break;
  67
  68         case 'V':
  69                 printf( "Version %s\n", SAMBA_VERSION_STRING );
  70                 exit(0);
  71                 break;
  72
  73         case 'O':
  74                 if (arg) {
  75                         lp_set_cmdline("socket options", arg);
  76                 }
  77                 break;
  78
  79         case 's':
  80                 if (arg) {
  81                         pstrcpy(dyn_CONFIGFILE, arg);
  82                 }
  83                 break;
  84
  85         case 'l':
  86                 if (arg) {
  87                         char *logfile = talloc_asprintf(NULL, "%s/log.%s", arg, pname);
  88                         lp_set_cmdline("log file", logfile);
  89                         talloc_free(logfile);
  90                 }
  91                 break;
  92
  93         case 'W':
  94                 lp_set_cmdline("workgroup", arg);
  95                 break;
  96
  97         case 'n':
  98                 lp_set_cmdline("netbios name", arg);
  99                 break;
 100
 101         case 'i':
 102                 lp_set_cmdline("netbios scope", arg);
 103                 break;
 104
 105         case 'm':
 106                 lp_set_cmdline("max protocol", arg);
 107                 break;
 108
 109         case 'R':
 110                 lp_set_cmdline("name resolve order", arg);
 111                 break;
 112
 113         case OPT_OPTION:
 114                 if (!lp_set_option(arg)) {
 115                         fprintf(stderr, "Error setting option '%s'\n", arg);
 116                         exit(1);
 117                 }
 118                 break;
 119
 120         case OPT_LEAK_REPORT:
 121                 talloc_enable_leak_report();
 122                 break;
 123
 124         case OPT_LEAK_REPORT_FULL:
 125                 talloc_enable_leak_report_full();
 126                 break;
 127         }
 128 }
 129
 130 struct poptOption popt_common_connection[] = {
 131         { NULL, 0, POPT_ARG_CALLBACK, popt_common_callback },
 132         { "name-resolve", 'R', POPT_ARG_STRING, NULL, 'R', "Use these name resolution services only", "NAME-RESOLVE-ORDER" },
 133         { "socket-options", 'O', POPT_ARG_STRING, NULL, 'O', "socket options to use", "SOCKETOPTIONS" },
 134         { "netbiosname", 'n', POPT_ARG_STRING, NULL, 'n', "Primary netbios name", "NETBIOSNAME" },
 135         { "workgroup", 'W', POPT_ARG_STRING, NULL, 'W', "Set the workgroup name", "WORKGROUP" },
 136         { "scope", 'i', POPT_ARG_STRING, NULL, 'i', "Use this Netbios scope", "SCOPE" },
 137         { "maxprotocol", 'm', POPT_ARG_STRING, NULL, 'm', "Set max protocol level", "MAXPROTOCOL" },
 138         POPT_TABLEEND
 139 };
 140
 141 struct poptOption popt_common_samba[] = {
 142         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, popt_common_callback },
 143         { "debuglevel",   'd', POPT_ARG_STRING, NULL, 'd', "Set debug level", "DEBUGLEVEL" },
 144         { "configfile",   's', POPT_ARG_STRING, NULL, 's', "Use alternative configuration file", "CONFIGFILE" },
 145         { "option",         0, POPT_ARG_STRING, NULL, OPT_OPTION, "Set smb.conf option from command line", "name=value" },
 146         { "log-basename", 'l', POPT_ARG_STRING, NULL, 'l', "Basename for log/debug files", "LOGFILEBASE" },
 147         { "leak-report",     0, POPT_ARG_NONE, NULL, OPT_LEAK_REPORT, "enable talloc leak reporting on exit", NULL },
 148         { "leak-report-full",0, POPT_ARG_NONE, NULL, OPT_LEAK_REPORT_FULL, "enable full talloc leak reporting on exit", NULL },
 149         POPT_TABLEEND
 150 };
 151
 152 struct poptOption popt_common_version[] = {
 153         { NULL, 0, POPT_ARG_CALLBACK, popt_common_callback },
 154         { "version", 'V', POPT_ARG_NONE, NULL, 'V', "Print version" },
 155         POPT_TABLEEND
 156 };
 157
 158
 159
 160 /****************************************************************************
 161  * get a password from a a file or file descriptor
 162  * exit on failure
 163  * ****************************************************************************/
 164 static void get_password_file(struct cmdline_auth_info *a)
 165 {
 166         int fd = -1;
 167         char *p;
 168         BOOL close_it = False;
 169         pstring spec;
 170         char pass[128];
 171
 172         if ((p = getenv("PASSWD_FD")) != NULL) {
 173                 pstrcpy(spec, "descriptor ");
 174                 pstrcat(spec, p);
 175                 sscanf(p, "%d", &fd);
 176                 close_it = False;
 177         } else if ((p = getenv("PASSWD_FILE")) != NULL) {
 178                 fd = open(p, O_RDONLY, 0);
 179                 pstrcpy(spec, p);
 180                 if (fd < 0) {
 181                         fprintf(stderr, "Error opening PASSWD_FILE %s: %s\n",
 182                                         spec, strerror(errno));
 183                         exit(1);
 184                 }
 185                 close_it = True;
 186         }
 187
 188         for(p = pass, *p = '\0'; /* ensure that pass is null-terminated */
 189                 p && p - pass < sizeof(pass);) {
 190                 switch (read(fd, p, 1)) {
 191                 case 1:
 192                         if (*p != '\n' && *p != '\0') {
 193                                 *++p = '\0'; /* advance p, and null-terminate pass */
 194                                 break;
 195                         }
 196                 case 0:
 197                         if (p - pass) {
 198                                 *p = '\0'; /* null-terminate it, just in case... */
 199                                 p = NULL; /* then force the loop condition to become false */
 200                                 break;
 201                         } else {
 202                                 fprintf(stderr, "Error reading password from file %s: %s\n",
 203                                                 spec, "empty password\n");
 204                                 exit(1);
 205                         }
 206
 207                 default:
 208                         fprintf(stderr, "Error reading password from file %s: %s\n",
 209                                         spec, strerror(errno));
 210                         exit(1);
 211                 }
 212         }
 213         pstrcpy(a->password, pass);
 214         if (close_it)
 215                 close(fd);
 216 }
 217
 218 static void get_credentials_file(const char *file, struct cmdline_auth_info *info)
 219 {
 220         XFILE *auth;
 221         fstring buf;
 222         uint16_t len = 0;
 223         char *ptr, *val, *param;
 224
 225         if ((auth=x_fopen(file, O_RDONLY, 0)) == NULL)
 226         {
 227                 /* fail if we can't open the credentials file */
 228                 d_printf("ERROR: Unable to open credentials file!\n");
 229                 exit(-1);
 230         }
 231
 232         while (!x_feof(auth))
 233         {
 234                 /* get a line from the file */
 235                 if (!x_fgets(buf, sizeof(buf), auth))
 236                         continue;
 237                 len = strlen(buf);
 238
 239                 if ((len) && (buf[len-1]=='\n'))
 240                 {
 241                         buf[len-1] = '\0';
 242                         len--;
 243                 }
 244                 if (len == 0)
 245                         continue;
 246
 247                 /* break up the line into parameter & value.
 248                  * will need to eat a little whitespace possibly */
 249                 param = buf;
 250                 if (!(ptr = strchr_m (buf, '=')))
 251                         continue;
 252
 253                 val = ptr+1;
 254                 *ptr = '\0';
 255
 256                 /* eat leading white space */
 257                 while ((*val!='\0') && ((*val==' ') || (*val=='\t')))
 258                         val++;
 259
 260                 if (strwicmp("password", param) == 0) {
 261                         pstrcpy(info->password, val);
 262                         info->got_pass = True;
 263                 } else if (strwicmp("username", param) == 0) {
 264                         pstrcpy(info->username, val);
 265                 } else if (strwicmp("domain", param) == 0) {
 266                         pstrcpy(info->domain,val);
 267                         info->got_domain = True;
 268                 }
 269                 memset(buf, 0, sizeof(buf));
 270         }
 271         x_fclose(auth);
 272 }
 273
 274 /* Handle command line options:
 275  *              -U,--user
 276  *              -A,--authentication-file
 277  *              -k,--use-kerberos
 278  *              -N,--no-pass
 279  *              -S,--signing
 280  *              -P --machine-pass
 281  */
 282
 283
 284 static void popt_common_credentials_callback(poptContext con,
 285                                                 enum poptCallbackReason reason,
 286                                                 const struct poptOption *opt,
 287                                                 const char *arg, const void *data)
 288 {
 289         char *p;
 290
 291         if (reason == POPT_CALLBACK_REASON_PRE) {
 292                 cmdline_auth_info.use_kerberos = False;
 293                 cmdline_auth_info.got_pass = False;
 294                 pstrcpy(cmdline_auth_info.username, "GUEST");
 295
 296                 if (getenv("LOGNAME"))pstrcpy(cmdline_auth_info.username,getenv("LOGNAME"));
 297
 298                 if (getenv("USER")) {
 299                         pstring tmp;
 300
 301                         pstrcpy(cmdline_auth_info.username,getenv("USER"));
 302
 303                         pstrcpy(tmp,cmdline_auth_info.username);
 304                         if ((p = strchr_m(tmp,'\\'))) {
 305                                 *p = 0;
 306                                 pstrcpy(cmdline_auth_info.domain,tmp);
 307                                 cmdline_auth_info.got_domain = True;
 308                                 pstrcpy(cmdline_auth_info.username,p+1);
 309                         }
 310
 311                         if ((p = strchr_m(cmdline_auth_info.username,'%'))) {
 312                                 *p = 0;
 313                                 pstrcpy(cmdline_auth_info.password,p+1);
 314                                 cmdline_auth_info.got_pass = True;
 315                                 memset(strchr_m(getenv("USER"),'%')+1,'X',strlen(cmdline_auth_info.password));
 316                         }
 317                 }
 318
 319                 if (getenv("DOMAIN")) {
 320                         pstrcpy(cmdline_auth_info.domain,getenv("DOMAIN"));
 321                         cmdline_auth_info.got_domain = True;
 322                 }
 323
 324                 if (getenv("PASSWD")) {
 325                         pstrcpy(cmdline_auth_info.password,getenv("PASSWD"));
 326                         cmdline_auth_info.got_pass = True;
 327                 }
 328
 329                 if (getenv("PASSWD_FD") || getenv("PASSWD_FILE")) {
 330                         get_password_file(&cmdline_auth_info);
 331                         cmdline_auth_info.got_pass = True;
 332                 }
 333
 334                 return;
 335         }
 336
 337         switch(opt->val) {
 338         case 'U':
 339                 {
 340                         char *lp;
 341                         pstring tmp;
 342
 343                         pstrcpy(cmdline_auth_info.username,arg);
 344
 345                         pstrcpy(tmp,cmdline_auth_info.username);
 346                         if ((p = strchr_m(tmp,'\\'))) {
 347                                 *p = 0;
 348                                 pstrcpy(cmdline_auth_info.domain,tmp);
 349                                 cmdline_auth_info.got_domain = True;
 350                                 pstrcpy(cmdline_auth_info.username,p+1);
 351                         }
 352
 353                         if ((lp=strchr_m(cmdline_auth_info.username,'%'))) {
 354                                 *lp = 0;
 355                                 pstrcpy(cmdline_auth_info.password,lp+1);
 356                                 cmdline_auth_info.got_pass = True;
 357                                 memset(strchr_m(arg,'%')+1,'X',strlen(cmdline_auth_info.password));
 358                         }
 359                 }
 360                 break;
 361
 362         case 'A':
 363                 get_credentials_file(arg, &cmdline_auth_info);
 364                 break;
 365
 366         case 'k':
 367 #ifndef HAVE_KRB5
 368                 d_printf("No kerberos support compiled in\n");
 369                 exit(1);
 370 #else
 371                 cmdline_auth_info.use_kerberos = True;
 372                 cmdline_auth_info.got_pass = True;
 373 #endif
 374                 break;
 375
 376         case 'S':
 377                 lp_set_cmdline("client signing", arg);
 378                 break;
 379
 380         case 'P':
 381                 {
 382                         char *opt_password = NULL;
 383                         /* it is very useful to be able to make ads queries as the
 384                            machine account for testing purposes and for domain leave */
 385
 386                         if (!secrets_init()) {
 387                                 d_printf("ERROR: Unable to open secrets database\n");
 388                                 exit(1);
 389                         }
 390
 391                         opt_password = secrets_fetch_machine_password(lp_workgroup());
 392
 393                         if (!opt_password) {
 394                                 d_printf("ERROR: Unable to fetch machine password\n");
 395                                 exit(1);
 396                         }
 397                         snprintf(cmdline_auth_info.username, sizeof(cmdline_auth_info.username),
 398                                  "%s$", lp_netbios_name());
 399                         pstrcpy(cmdline_auth_info.password,opt_password);
 400                         SAFE_FREE(opt_password);
 401                         cmdline_auth_info.got_pass = True;
 402
 403                         pstrcpy(cmdline_auth_info.domain, lp_workgroup());
 404                         cmdline_auth_info.got_domain = True;
 405
 406                         /* machine accounts only work with kerberos */
 407                         cmdline_auth_info.use_kerberos = True;
 408                 }
 409                 break;
 410         }
 411 }
 412
 413
 414
 415 struct poptOption popt_common_credentials[] = {
 416         { NULL, 0, POPT_ARG_CALLBACK|POPT_CBFLAG_PRE, popt_common_credentials_callback },
 417         { "user", 'U', POPT_ARG_STRING, NULL, 'U', "Set the network username", "USERNAME" },
 418         { "no-pass", 'N', POPT_ARG_NONE, &cmdline_auth_info.got_pass, 0, "Don't ask for a password" },
 419         { "kerberos", 'k', POPT_ARG_NONE, &cmdline_auth_info.use_kerberos, 'k', "Use kerberos (active directory) authentication" },
 420         { "authentication-file", 'A', POPT_ARG_STRING, NULL, 'A', "Get the credentials from a file", "FILE" },
 421         { "signing", 'S', POPT_ARG_STRING, NULL, 'S', "Set the client signing state", "on|off|required" },
 422         { "machine-pass", 'P', POPT_ARG_NONE, NULL, 'P', "Use stored machine account password" },
 423         POPT_TABLEEND
 424 };
 425
 426 void cmdline_set_username(const char *name)
 427 {
 428         pstrcpy(cmdline_auth_info.username, name);
 429 }
 430
 431 const char *cmdline_get_username(void)
 432 {
 433         return cmdline_auth_info.username;
 434 }
 435
 436 void cmdline_set_userdomain(const char *domain)
 437 {
 438         cmdline_auth_info.got_domain = True;
 439         pstrcpy(cmdline_auth_info.domain, domain);
 440 }
 441
 442 const char *cmdline_get_userdomain(void)
 443 {
 444         if (cmdline_auth_info.got_domain) {
 445                 return cmdline_auth_info.domain;
 446         }
 447
 448         /* I think this should be lp_netbios_name()
 449          * instead of lp_workgroup(), because if you're logged in
 450          * as domain user the getenv("USER") contains the domain
 451          * and this code path isn't used
 452          * --metze
 453          */
 454         return lp_netbios_name();
 455 }
 456
 457 const char *cmdline_get_userpassword(void)
 458 {
 459         char *prompt;
 460         char *ret;
 461
 462         if (cmdline_auth_info.got_pass) {
 463                 return cmdline_auth_info.password;
 464         }
 465
 466         prompt = talloc_asprintf(NULL, "Password for [%s\\%s]:",
 467                                  cmdline_get_userdomain(),
 468                                  cmdline_get_username());
 469
 470         ret = getpass(prompt);
 471
 472         talloc_free(prompt);
 473         return ret;
 474 }
 475
 476 void cmdline_set_userpassword(const char *pass)
 477 {
 478         cmdline_auth_info.got_pass = True;
 479         pstrcpy(cmdline_auth_info.password, pass);
 480 }
 481
 482 void cmdline_set_use_kerberos(BOOL use_kerberos)
 483 {
 484         cmdline_auth_info.use_kerberos = use_kerberos;
 485 }
 486
 487 BOOL cmdline_get_use_kerberos(void)
 488 {
 489         return cmdline_auth_info.use_kerberos;
 490 }