loadparm.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 3 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License along
  13  * with this program; if not, visit the http://fsf.org website.
  14  */
  15
  16 /* This is based on loadparm.c from Samba, written by Andrew Tridgell
  17  * and Karl Auer.  Some of the changes are:
  18  *
  19  * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
  20  * Copyright (C) 2003-2009 Wayne Davison <wayned@samba.org>
  21  */
  22
  23 /* Load parameters.
  24  *
  25  *  This module provides suitable callback functions for the params
  26  *  module. It builds the internal table of service details which is
  27  *  then used by the rest of the server.
  28  *
  29  * To add a parameter:
  30  *
  31  * 1) add it to the global or service structure definition
  32  * 2) add it to the parm_table
  33  * 3) add it to the list of available functions (eg: using FN_GLOBAL_STRING())
  34  * 4) If it's a global then initialise it in init_globals. If a local
  35  *    (ie. service) parameter then initialise it in the sDefault structure
  36  *
  37  *
  38  * Notes:
  39  *   The configuration file is processed sequentially for speed. It is NOT
  40  *   accessed randomly as happens in 'real' Windows. For this reason, there
  41  *   is a fair bit of sequence-dependent code here - ie., code which assumes
  42  *   that certain things happen before others. In particular, the code which
  43  *   happens at the boundary between sections is delicately poised, so be
  44  *   careful!
  45  *
  46  */
  47
  48 /* TODO: Parameter to set debug level on server. */
  49
  50 #include "rsync.h"
  51 #include "ifuncs.h"
  52 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((char *)(p1)) - (char *)(p2)))
  53 #define strequal(a,b) (strcasecmp(a,b)==0)
  54 #define BOOLSTR(b) ((b) ? "Yes" : "No")
  55 typedef char pstring[1024];
  56 #define pstrcpy(a,b) strlcpy(a,b,sizeof(pstring))
  57
  58 #ifndef LOG_DAEMON
  59 #define LOG_DAEMON 0
  60 #endif
  61
  62 #define DEFAULT_DONT_COMPRESS "*.gz *.zip *.z *.rpm *.deb *.iso *.bz2" \
  63         " *.t[gb]z *.7z *.mp[34] *.mov *.avi *.ogg *.jpg *.jpeg"
  64
  65 /* the following are used by loadparm for option lists */
  66 typedef enum
  67 {
  68         P_BOOL,P_BOOLREV,P_CHAR,P_INTEGER,P_OCTAL,
  69         P_PATH,P_STRING,P_GSTRING,P_ENUM,P_SEP
  70 } parm_type;
  71
  72 typedef enum
  73 {
  74         P_LOCAL,P_GLOBAL,P_SEPARATOR,P_NONE
  75 } parm_class;
  76
  77 struct enum_list {
  78         int value;
  79         char *name;
  80 };
  81
  82 struct parm_struct
  83 {
  84         char *label;
  85         parm_type type;
  86         parm_class class;
  87         void *ptr;
  88         struct enum_list *enum_list;
  89         unsigned flags;
  90 };
  91
  92 #ifndef GLOBAL_NAME
  93 #define GLOBAL_NAME "global"
  94 #endif
  95
  96 /* some helpful bits */
  97 #define pSERVICE(i) ServicePtrs[i]
  98 #define iSERVICE(i) (*pSERVICE(i))
  99 #define LP_SNUM_OK(iService) (((iService) >= 0) && ((iService) < iNumServices))
 100
 101 /*
 102  * This structure describes global (ie., server-wide) parameters.
 103  */
 104 typedef struct
 105 {
 106         char *bind_address;
 107         char *motd_file;
 108         char *pid_file;
 109         char *socket_options;
 110
 111         int rsync_port;
 112 } global;
 113
 114 static global Globals;
 115
 116
 117 /*
 118  * This structure describes a single service.  Their order must match the
 119  * initializers below, which you can accomplish by keeping each sub-section
 120  * sorted.  (e.g. in vim, just visually select each subsection and use !sort.)
 121  */
 122 typedef struct
 123 {
 124         char *auth_users;
 125         char *charset;
 126         char *comment;
 127         char *dont_compress;
 128         char *exclude;
 129         char *exclude_from;
 130         char *filter;
 131         char *gid;
 132         char *hosts_allow;
 133         char *hosts_deny;
 134         char *include;
 135         char *include_from;
 136         char *incoming_chmod;
 137         char *lock_file;
 138         char *log_file;
 139         char *log_format;
 140         char *name;
 141         char *outgoing_chmod;
 142         char *path;
 143         char *postxfer_exec;
 144         char *prexfer_exec;
 145         char *refuse_options;
 146         char *secrets_file;
 147         char *temp_dir;
 148         char *uid;
 149
 150         int max_connections;
 151         int max_verbosity;
 152         int syslog_facility;
 153         int timeout;
 154
 155         BOOL fake_super;
 156         BOOL ignore_errors;
 157         BOOL ignore_nonreadable;
 158         BOOL list;
 159         BOOL munge_symlinks;
 160         BOOL numeric_ids;
 161         BOOL read_only;
 162         BOOL strict_modes;
 163         BOOL transfer_logging;
 164         BOOL use_chroot;
 165         BOOL write_only;
 166 } service;
 167
 168
 169 /* This is a default service used to prime a services structure.  In order
 170  * to make these easy to keep sorted in the same way as the variables
 171  * above, use the variable name in the leading comment, including a
 172  * trailing ';' (to avoid a sorting problem with trailing digits). */
 173 static service sDefault =
 174 {
 175  /* auth_users; */              NULL,
 176  /* charset; */                 NULL,
 177  /* comment; */                 NULL,
 178  /* dont_compress; */           DEFAULT_DONT_COMPRESS,
 179  /* exclude; */                 NULL,
 180  /* exclude_from; */            NULL,
 181  /* filter; */                  NULL,
 182  /* gid; */                     NOBODY_GROUP,
 183  /* hosts_allow; */             NULL,
 184  /* hosts_deny; */              NULL,
 185  /* include; */                 NULL,
 186  /* include_from; */            NULL,
 187  /* incoming_chmod; */          NULL,
 188  /* lock_file; */               DEFAULT_LOCK_FILE,
 189  /* log_file; */                NULL,
 190  /* log_format; */              "%o %h [%a] %m (%u) %f %l",
 191  /* name; */                    NULL,
 192  /* outgoing_chmod; */          NULL,
 193  /* path; */                    NULL,
 194  /* postxfer_exec; */           NULL,
 195  /* prexfer_exec; */            NULL,
 196  /* refuse_options; */          NULL,
 197  /* secrets_file; */            NULL,
 198  /* temp_dir; */                NULL,
 199  /* uid; */                     NOBODY_USER,
 200
 201  /* max_connections; */         0,
 202  /* max_verbosity; */           1,
 203  /* syslog_facility; */         LOG_DAEMON,
 204  /* timeout; */                 0,
 205
 206  /* fake_super; */              False,
 207  /* ignore_errors; */           False,
 208  /* ignore_nonreadable; */      False,
 209  /* list; */                    True,
 210  /* munge_symlinks; */          (BOOL)-1,
 211  /* numeric_ids; */             (BOOL)-1,
 212  /* read_only; */               True,
 213  /* strict_modes; */            True,
 214  /* transfer_logging; */        False,
 215  /* use_chroot; */              True,
 216  /* write_only; */              False,
 217 };
 218
 219
 220
 221 /* local variables */
 222 static service **ServicePtrs = NULL;
 223 static int iNumServices = 0;
 224 static int iServiceIndex = 0;
 225 static BOOL bInGlobalSection = True;
 226
 227 #define NUMPARAMETERS (sizeof(parm_table) / sizeof(struct parm_struct))
 228
 229 static struct enum_list enum_facilities[] = {
 230 #ifdef LOG_AUTH
 231         { LOG_AUTH, "auth" },
 232 #endif
 233 #ifdef LOG_AUTHPRIV
 234         { LOG_AUTHPRIV, "authpriv" },
 235 #endif
 236 #ifdef LOG_CRON
 237         { LOG_CRON, "cron" },
 238 #endif
 239 #ifdef LOG_DAEMON
 240         { LOG_DAEMON, "daemon" },
 241 #endif
 242 #ifdef LOG_FTP
 243         { LOG_FTP, "ftp" },
 244 #endif
 245 #ifdef LOG_KERN
 246         { LOG_KERN, "kern" },
 247 #endif
 248 #ifdef LOG_LPR
 249         { LOG_LPR, "lpr" },
 250 #endif
 251 #ifdef LOG_MAIL
 252         { LOG_MAIL, "mail" },
 253 #endif
 254 #ifdef LOG_NEWS
 255         { LOG_NEWS, "news" },
 256 #endif
 257 #ifdef LOG_AUTH
 258         { LOG_AUTH, "security" },
 259 #endif
 260 #ifdef LOG_SYSLOG
 261         { LOG_SYSLOG, "syslog" },
 262 #endif
 263 #ifdef LOG_USER
 264         { LOG_USER, "user" },
 265 #endif
 266 #ifdef LOG_UUCP
 267         { LOG_UUCP, "uucp" },
 268 #endif
 269 #ifdef LOG_LOCAL0
 270         { LOG_LOCAL0, "local0" },
 271 #endif
 272 #ifdef LOG_LOCAL1
 273         { LOG_LOCAL1, "local1" },
 274 #endif
 275 #ifdef LOG_LOCAL2
 276         { LOG_LOCAL2, "local2" },
 277 #endif
 278 #ifdef LOG_LOCAL3
 279         { LOG_LOCAL3, "local3" },
 280 #endif
 281 #ifdef LOG_LOCAL4
 282         { LOG_LOCAL4, "local4" },
 283 #endif
 284 #ifdef LOG_LOCAL5
 285         { LOG_LOCAL5, "local5" },
 286 #endif
 287 #ifdef LOG_LOCAL6
 288         { LOG_LOCAL6, "local6" },
 289 #endif
 290 #ifdef LOG_LOCAL7
 291         { LOG_LOCAL7, "local7" },
 292 #endif
 293         { -1, NULL }};
 294
 295
 296 /* note that we do not initialise the defaults union - it is not allowed in ANSI C */
 297 static struct parm_struct parm_table[] =
 298 {
 299  {"address",           P_STRING, P_GLOBAL,&Globals.bind_address,       NULL,0},
 300  {"motd file",         P_STRING, P_GLOBAL,&Globals.motd_file,          NULL,0},
 301  {"pid file",          P_STRING, P_GLOBAL,&Globals.pid_file,           NULL,0},
 302  {"port",              P_INTEGER,P_GLOBAL,&Globals.rsync_port,         NULL,0},
 303  {"socket options",    P_STRING, P_GLOBAL,&Globals.socket_options,     NULL,0},
 304
 305  {"auth users",        P_STRING, P_LOCAL, &sDefault.auth_users,        NULL,0},
 306  {"charset",           P_STRING, P_LOCAL, &sDefault.charset,           NULL,0},
 307  {"comment",           P_STRING, P_LOCAL, &sDefault.comment,           NULL,0},
 308  {"dont compress",     P_STRING, P_LOCAL, &sDefault.dont_compress,     NULL,0},
 309  {"exclude from",      P_STRING, P_LOCAL, &sDefault.exclude_from,      NULL,0},
 310  {"exclude",           P_STRING, P_LOCAL, &sDefault.exclude,           NULL,0},
 311  {"fake super",        P_BOOL,   P_LOCAL, &sDefault.fake_super,        NULL,0},
 312  {"filter",            P_STRING, P_LOCAL, &sDefault.filter,            NULL,0},
 313  {"gid",               P_STRING, P_LOCAL, &sDefault.gid,               NULL,0},
 314  {"hosts allow",       P_STRING, P_LOCAL, &sDefault.hosts_allow,       NULL,0},
 315  {"hosts deny",        P_STRING, P_LOCAL, &sDefault.hosts_deny,        NULL,0},
 316  {"ignore errors",     P_BOOL,   P_LOCAL, &sDefault.ignore_errors,     NULL,0},
 317  {"ignore nonreadable",P_BOOL,   P_LOCAL, &sDefault.ignore_nonreadable,NULL,0},
 318  {"include from",      P_STRING, P_LOCAL, &sDefault.include_from,      NULL,0},
 319  {"include",           P_STRING, P_LOCAL, &sDefault.include,           NULL,0},
 320  {"incoming chmod",    P_STRING, P_LOCAL, &sDefault.incoming_chmod,    NULL,0},
 321  {"list",              P_BOOL,   P_LOCAL, &sDefault.list,              NULL,0},
 322  {"lock file",         P_STRING, P_LOCAL, &sDefault.lock_file,         NULL,0},
 323  {"log file",          P_STRING, P_LOCAL, &sDefault.log_file,          NULL,0},
 324  {"log format",        P_STRING, P_LOCAL, &sDefault.log_format,        NULL,0},
 325  {"max connections",   P_INTEGER,P_LOCAL, &sDefault.max_connections,   NULL,0},
 326  {"max verbosity",     P_INTEGER,P_LOCAL, &sDefault.max_verbosity,     NULL,0},
 327  {"munge symlinks",    P_BOOL,   P_LOCAL, &sDefault.munge_symlinks,    NULL,0},
 328  {"name",              P_STRING, P_LOCAL, &sDefault.name,              NULL,0},
 329  {"numeric ids",       P_BOOL,   P_LOCAL, &sDefault.numeric_ids,       NULL,0},
 330  {"outgoing chmod",    P_STRING, P_LOCAL, &sDefault.outgoing_chmod,    NULL,0},
 331  {"path",              P_PATH,   P_LOCAL, &sDefault.path,              NULL,0},
 332 #ifdef HAVE_PUTENV
 333  {"post-xfer exec",    P_STRING, P_LOCAL, &sDefault.postxfer_exec,     NULL,0},
 334  {"pre-xfer exec",     P_STRING, P_LOCAL, &sDefault.prexfer_exec,      NULL,0},
 335 #endif
 336  {"read only",         P_BOOL,   P_LOCAL, &sDefault.read_only,         NULL,0},
 337  {"refuse options",    P_STRING, P_LOCAL, &sDefault.refuse_options,    NULL,0},
 338  {"secrets file",      P_STRING, P_LOCAL, &sDefault.secrets_file,      NULL,0},
 339  {"strict modes",      P_BOOL,   P_LOCAL, &sDefault.strict_modes,      NULL,0},
 340  {"syslog facility",   P_ENUM,   P_LOCAL, &sDefault.syslog_facility,enum_facilities,0},
 341  {"temp dir",          P_PATH,   P_LOCAL, &sDefault.temp_dir,          NULL,0},
 342  {"timeout",           P_INTEGER,P_LOCAL, &sDefault.timeout,           NULL,0},
 343  {"transfer logging",  P_BOOL,   P_LOCAL, &sDefault.transfer_logging,  NULL,0},
 344  {"uid",               P_STRING, P_LOCAL, &sDefault.uid,               NULL,0},
 345  {"use chroot",        P_BOOL,   P_LOCAL, &sDefault.use_chroot,        NULL,0},
 346  {"write only",        P_BOOL,   P_LOCAL, &sDefault.write_only,        NULL,0},
 347  {NULL,                P_BOOL,   P_NONE,  NULL,                        NULL,0}
 348 };
 349
 350
 351 /***************************************************************************
 352 * Initialise the global parameter structure.
 353 ***************************************************************************/
 354 static void init_globals(void)
 355 {
 356         memset(&Globals, 0, sizeof Globals);
 357 }
 358
 359 /***************************************************************************
 360 * Initialise the sDefault parameter structure.
 361 ***************************************************************************/
 362 static void init_locals(void)
 363 {
 364 }
 365
 366
 367 /*
 368    In this section all the functions that are used to access the
 369    parameters from the rest of the program are defined
 370 */
 371
 372 #define FN_GLOBAL_STRING(fn_name,ptr) \
 373  char *fn_name(void) {return(*(char **)(ptr) ? *(char **)(ptr) : "");}
 374 #define FN_GLOBAL_BOOL(fn_name,ptr) \
 375  BOOL fn_name(void) {return(*(BOOL *)(ptr));}
 376 #define FN_GLOBAL_CHAR(fn_name,ptr) \
 377  char fn_name(void) {return(*(char *)(ptr));}
 378 #define FN_GLOBAL_INTEGER(fn_name,ptr) \
 379  int fn_name(void) {return(*(int *)(ptr));}
 380
 381 #define FN_LOCAL_STRING(fn_name,val) \
 382  char *fn_name(int i) {return((LP_SNUM_OK(i)&&pSERVICE(i)->val)?pSERVICE(i)->val : (sDefault.val?sDefault.val:""));}
 383 #define FN_LOCAL_BOOL(fn_name,val) \
 384  BOOL fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
 385 #define FN_LOCAL_CHAR(fn_name,val) \
 386  char fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
 387 #define FN_LOCAL_INTEGER(fn_name,val) \
 388  int fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
 389
 390
 391 FN_GLOBAL_STRING(lp_bind_address, &Globals.bind_address)
 392 FN_GLOBAL_STRING(lp_motd_file, &Globals.motd_file)
 393 FN_GLOBAL_STRING(lp_pid_file, &Globals.pid_file)
 394 FN_GLOBAL_STRING(lp_socket_options, &Globals.socket_options)
 395
 396 FN_GLOBAL_INTEGER(lp_rsync_port, &Globals.rsync_port)
 397
 398 FN_LOCAL_STRING(lp_auth_users, auth_users)
 399 FN_LOCAL_STRING(lp_charset, charset)
 400 FN_LOCAL_STRING(lp_comment, comment)
 401 FN_LOCAL_STRING(lp_dont_compress, dont_compress)
 402 FN_LOCAL_STRING(lp_exclude, exclude)
 403 FN_LOCAL_STRING(lp_exclude_from, exclude_from)
 404 FN_LOCAL_STRING(lp_filter, filter)
 405 FN_LOCAL_STRING(lp_gid, gid)
 406 FN_LOCAL_STRING(lp_hosts_allow, hosts_allow)
 407 FN_LOCAL_STRING(lp_hosts_deny, hosts_deny)
 408 FN_LOCAL_STRING(lp_include, include)
 409 FN_LOCAL_STRING(lp_include_from, include_from)
 410 FN_LOCAL_STRING(lp_incoming_chmod, incoming_chmod)
 411 FN_LOCAL_STRING(lp_lock_file, lock_file)
 412 FN_LOCAL_STRING(lp_log_file, log_file)
 413 FN_LOCAL_STRING(lp_log_format, log_format)
 414 FN_LOCAL_STRING(lp_name, name)
 415 FN_LOCAL_STRING(lp_outgoing_chmod, outgoing_chmod)
 416 FN_LOCAL_STRING(lp_path, path)
 417 FN_LOCAL_STRING(lp_postxfer_exec, postxfer_exec)
 418 FN_LOCAL_STRING(lp_prexfer_exec, prexfer_exec)
 419 FN_LOCAL_STRING(lp_refuse_options, refuse_options)
 420 FN_LOCAL_STRING(lp_secrets_file, secrets_file)
 421 FN_LOCAL_STRING(lp_temp_dir, temp_dir)
 422 FN_LOCAL_STRING(lp_uid, uid)
 423
 424 FN_LOCAL_INTEGER(lp_max_connections, max_connections)
 425 FN_LOCAL_INTEGER(lp_max_verbosity, max_verbosity)
 426 FN_LOCAL_INTEGER(lp_syslog_facility, syslog_facility)
 427 FN_LOCAL_INTEGER(lp_timeout, timeout)
 428
 429 FN_LOCAL_BOOL(lp_fake_super, fake_super)
 430 FN_LOCAL_BOOL(lp_ignore_errors, ignore_errors)
 431 FN_LOCAL_BOOL(lp_ignore_nonreadable, ignore_nonreadable)
 432 FN_LOCAL_BOOL(lp_list, list)
 433 FN_LOCAL_BOOL(lp_munge_symlinks, munge_symlinks)
 434 FN_LOCAL_BOOL(lp_numeric_ids, numeric_ids)
 435 FN_LOCAL_BOOL(lp_read_only, read_only)
 436 FN_LOCAL_BOOL(lp_strict_modes, strict_modes)
 437 FN_LOCAL_BOOL(lp_transfer_logging, transfer_logging)
 438 FN_LOCAL_BOOL(lp_use_chroot, use_chroot)
 439 FN_LOCAL_BOOL(lp_write_only, write_only)
 440
 441 /* local prototypes */
 442 static int    strwicmp(char *psz1, char *psz2);
 443 static int    map_parameter(char *parmname);
 444 static BOOL   set_boolean(BOOL *pb, char *parmvalue);
 445 static int    getservicebyname(char *name, service *pserviceDest);
 446 static void   copy_service(service *pserviceDest, service *pserviceSource);
 447 static BOOL   do_parameter(char *parmname, char *parmvalue);
 448 static BOOL   do_section(char *sectionname);
 449
 450
 451 /***************************************************************************
 452 * initialise a service to the defaults
 453 ***************************************************************************/
 454 static void init_service(service *pservice)
 455 {
 456         memset((char *)pservice,0,sizeof(service));
 457         copy_service(pservice,&sDefault);
 458 }
 459
 460
 461 /**
 462  * Assign a copy of @p v to @p *s.  Handles NULL strings.  @p *v must
 463  * be initialized when this is called, either to NULL or a malloc'd
 464  * string.
 465  *
 466  * @fixme There is a small leak here in that sometimes the existing
 467  * value will be dynamically allocated, and the old copy is lost.
 468  * However, we can't always deallocate the old value, because in the
 469  * case of sDefault, it points to a static string.  It would be nice
 470  * to have either all-strdup'd values, or to never need to free
 471  * memory.
 472  **/
 473 static void string_set(char **s, const char *v)
 474 {
 475         if (!v) {
 476                 *s = NULL;
 477                 return;
 478         }
 479         *s = strdup(v);
 480         if (!*s)
 481                 exit_cleanup(RERR_MALLOC);
 482 }
 483
 484
 485 /***************************************************************************
 486 * add a new service to the services array initialising it with the given
 487 * service
 488 ***************************************************************************/
 489 static int add_a_service(service *pservice, char *name)
 490 {
 491   int i;
 492   service tservice;
 493   int num_to_alloc = iNumServices+1;
 494
 495   tservice = *pservice;
 496
 497   /* it might already exist */
 498   if (name)
 499     {
 500       i = getservicebyname(name,NULL);
 501       if (i >= 0)
 502         return(i);
 503     }
 504
 505   i = iNumServices;
 506
 507   ServicePtrs = realloc_array(ServicePtrs, service *, num_to_alloc);
 508
 509   if (ServicePtrs)
 510           pSERVICE(iNumServices) = new(service);
 511
 512   if (!ServicePtrs || !pSERVICE(iNumServices))
 513           return(-1);
 514
 515   iNumServices++;
 516
 517   init_service(pSERVICE(i));
 518   copy_service(pSERVICE(i),&tservice);
 519   if (name)
 520     string_set(&iSERVICE(i).name,name);
 521
 522   return(i);
 523 }
 524
 525 /***************************************************************************
 526 * Do a case-insensitive, whitespace-ignoring string compare.
 527 ***************************************************************************/
 528 static int strwicmp(char *psz1, char *psz2)
 529 {
 530    /* if BOTH strings are NULL, return TRUE, if ONE is NULL return */
 531    /* appropriate value. */
 532    if (psz1 == psz2)
 533       return (0);
 534    else
 535       if (psz1 == NULL)
 536          return (-1);
 537       else
 538           if (psz2 == NULL)
 539               return (1);
 540
 541    /* sync the strings on first non-whitespace */
 542    while (1)
 543    {
 544       while (isSpace(psz1))
 545          psz1++;
 546       while (isSpace(psz2))
 547          psz2++;
 548       if (toUpper(psz1) != toUpper(psz2) || *psz1 == '\0' || *psz2 == '\0')
 549          break;
 550       psz1++;
 551       psz2++;
 552    }
 553    return (*psz1 - *psz2);
 554 }
 555
 556 /***************************************************************************
 557 * Map a parameter's string representation to something we can use.
 558 * Returns False if the parameter string is not recognised, else TRUE.
 559 ***************************************************************************/
 560 static int map_parameter(char *parmname)
 561 {
 562    int iIndex;
 563
 564    if (*parmname == '-')
 565      return(-1);
 566
 567    for (iIndex = 0; parm_table[iIndex].label; iIndex++)
 568       if (strwicmp(parm_table[iIndex].label, parmname) == 0)
 569          return(iIndex);
 570
 571    rprintf(FLOG, "Unknown Parameter encountered: \"%s\"\n", parmname);
 572    return(-1);
 573 }
 574
 575
 576 /***************************************************************************
 577 * Set a boolean variable from the text value stored in the passed string.
 578 * Returns True in success, False if the passed string does not correctly
 579 * represent a boolean.
 580 ***************************************************************************/
 581 static BOOL set_boolean(BOOL *pb, char *parmvalue)
 582 {
 583    BOOL bRetval;
 584
 585    bRetval = True;
 586    if (strwicmp(parmvalue, "yes") == 0 ||
 587        strwicmp(parmvalue, "true") == 0 ||
 588        strwicmp(parmvalue, "1") == 0)
 589       *pb = True;
 590    else
 591       if (strwicmp(parmvalue, "no") == 0 ||
 592           strwicmp(parmvalue, "False") == 0 ||
 593           strwicmp(parmvalue, "0") == 0)
 594          *pb = False;
 595       else
 596       {
 597          rprintf(FLOG, "Badly formed boolean in configuration file: \"%s\".\n",
 598                parmvalue);
 599          bRetval = False;
 600       }
 601    return (bRetval);
 602 }
 603
 604 /***************************************************************************
 605 * Find a service by name. Otherwise works like get_service.
 606 ***************************************************************************/
 607 static int getservicebyname(char *name, service *pserviceDest)
 608 {
 609    int iService;
 610
 611    for (iService = iNumServices - 1; iService >= 0; iService--)
 612       if (strwicmp(iSERVICE(iService).name, name) == 0)
 613       {
 614          if (pserviceDest != NULL)
 615            copy_service(pserviceDest, pSERVICE(iService));
 616          break;
 617       }
 618
 619    return (iService);
 620 }
 621
 622
 623
 624 /***************************************************************************
 625 * Copy a service structure to another
 626 ***************************************************************************/
 627 static void copy_service(service *pserviceDest,
 628                          service *pserviceSource)
 629 {
 630   int i;
 631
 632   for (i=0;parm_table[i].label;i++)
 633     if (parm_table[i].ptr && parm_table[i].class == P_LOCAL) {
 634         void *def_ptr = parm_table[i].ptr;
 635         void *src_ptr =
 636           ((char *)pserviceSource) + PTR_DIFF(def_ptr,&sDefault);
 637         void *dest_ptr =
 638           ((char *)pserviceDest) + PTR_DIFF(def_ptr,&sDefault);
 639
 640         switch (parm_table[i].type)
 641           {
 642           case P_BOOL:
 643           case P_BOOLREV:
 644             *(BOOL *)dest_ptr = *(BOOL *)src_ptr;
 645             break;
 646
 647           case P_INTEGER:
 648           case P_ENUM:
 649           case P_OCTAL:
 650             *(int *)dest_ptr = *(int *)src_ptr;
 651             break;
 652
 653           case P_CHAR:
 654             *(char *)dest_ptr = *(char *)src_ptr;
 655             break;
 656
 657           case P_PATH:
 658           case P_STRING:
 659             string_set(dest_ptr,*(char **)src_ptr);
 660             break;
 661
 662           default:
 663             break;
 664           }
 665       }
 666 }
 667
 668
 669 /***************************************************************************
 670 * Process a parameter for a particular service number. If snum < 0
 671 * then assume we are in the globals
 672 ***************************************************************************/
 673 static BOOL lp_do_parameter(int snum, char *parmname, char *parmvalue)
 674 {
 675    int parmnum, i;
 676    void *parm_ptr=NULL; /* where we are going to store the result */
 677    void *def_ptr=NULL;
 678    char *cp;
 679
 680    parmnum = map_parameter(parmname);
 681
 682    if (parmnum < 0)
 683      {
 684        rprintf(FLOG, "IGNORING unknown parameter \"%s\"\n", parmname);
 685        return(True);
 686      }
 687
 688    def_ptr = parm_table[parmnum].ptr;
 689
 690    /* we might point at a service, the default service or a global */
 691    if (snum < 0) {
 692      parm_ptr = def_ptr;
 693    } else {
 694        if (parm_table[parmnum].class == P_GLOBAL) {
 695            rprintf(FLOG, "Global parameter %s found in service section!\n",parmname);
 696            return(True);
 697          }
 698        parm_ptr = ((char *)pSERVICE(snum)) + PTR_DIFF(def_ptr,&sDefault);
 699    }
 700
 701    /* now switch on the type of variable it is */
 702    switch (parm_table[parmnum].type)
 703      {
 704      case P_BOOL:
 705        set_boolean(parm_ptr,parmvalue);
 706        break;
 707
 708      case P_BOOLREV:
 709        set_boolean(parm_ptr,parmvalue);
 710        *(BOOL *)parm_ptr = ! *(BOOL *)parm_ptr;
 711        break;
 712
 713      case P_INTEGER:
 714        *(int *)parm_ptr = atoi(parmvalue);
 715        break;
 716
 717      case P_CHAR:
 718        *(char *)parm_ptr = *parmvalue;
 719        break;
 720
 721      case P_OCTAL:
 722        sscanf(parmvalue,"%o",(int *)parm_ptr);
 723        break;
 724
 725      case P_PATH:
 726        string_set(parm_ptr,parmvalue);
 727        if ((cp = *(char**)parm_ptr) != NULL) {
 728            int len = strlen(cp);
 729            while (len > 1 && cp[len-1] == '/') len--;
 730            cp[len] = '\0';
 731        }
 732        break;
 733
 734      case P_STRING:
 735        string_set(parm_ptr,parmvalue);
 736        break;
 737
 738      case P_GSTRING:
 739        strlcpy((char *)parm_ptr,parmvalue,sizeof(pstring));
 740        break;
 741
 742      case P_ENUM:
 743              for (i=0;parm_table[parmnum].enum_list[i].name;i++) {
 744                      if (strequal(parmvalue, parm_table[parmnum].enum_list[i].name)) {
 745                              *(int *)parm_ptr = parm_table[parmnum].enum_list[i].value;
 746                              break;
 747                      }
 748              }
 749              if (!parm_table[parmnum].enum_list[i].name) {
 750                      if (atoi(parmvalue) > 0)
 751                              *(int *)parm_ptr = atoi(parmvalue);
 752              }
 753              break;
 754      case P_SEP:
 755              break;
 756      }
 757
 758    return(True);
 759 }
 760
 761 /***************************************************************************
 762 * Process a parameter.
 763 ***************************************************************************/
 764 static BOOL do_parameter(char *parmname, char *parmvalue)
 765 {
 766    return lp_do_parameter(bInGlobalSection?-2:iServiceIndex, parmname, parmvalue);
 767 }
 768
 769 /***************************************************************************
 770 * Process a new section (service). At this stage all sections are services.
 771 * Later we'll have special sections that permit server parameters to be set.
 772 * Returns True on success, False on failure.
 773 ***************************************************************************/
 774 static BOOL do_section(char *sectionname)
 775 {
 776    BOOL bRetval;
 777    BOOL isglobal = (strwicmp(sectionname, GLOBAL_NAME) == 0);
 778    bRetval = False;
 779
 780    /* if we were in a global section then do the local inits */
 781    if (bInGlobalSection && !isglobal)
 782      init_locals();
 783
 784    /* if we've just struck a global section, note the fact. */
 785    bInGlobalSection = isglobal;
 786
 787    /* check for multiple global sections */
 788    if (bInGlobalSection)
 789    {
 790      return(True);
 791    }
 792
 793    if (strchr(sectionname, '/') != NULL) {
 794      rprintf(FLOG, "Warning: invalid section name in configuration file: %s\n", sectionname);
 795      return False;
 796    }
 797
 798    /* if we have a current service, tidy it up before moving on */
 799    bRetval = True;
 800
 801    if (iServiceIndex >= 0)
 802      bRetval = True;
 803
 804    /* if all is still well, move to the next record in the services array */
 805    if (bRetval)
 806      {
 807        /* We put this here to avoid an odd message order if messages are */
 808        /* issued by the post-processing of a previous section. */
 809
 810        if ((iServiceIndex=add_a_service(&sDefault,sectionname)) < 0)
 811          {
 812            rprintf(FLOG, "Failed to add a new service\n");
 813            return(False);
 814          }
 815      }
 816
 817    return (bRetval);
 818 }
 819
 820
 821 /***************************************************************************
 822 * Load the services array from the services file. Return True on success,
 823 * False on failure.
 824 ***************************************************************************/
 825 BOOL lp_load(char *pszFname, int globals_only)
 826 {
 827         pstring n2;
 828         BOOL bRetval;
 829
 830         bRetval = False;
 831
 832         bInGlobalSection = True;
 833
 834         init_globals();
 835
 836         pstrcpy(n2, pszFname);
 837
 838         /* We get sections first, so have to start 'behind' to make up */
 839         iServiceIndex = -1;
 840         bRetval = pm_process(n2, globals_only?NULL:do_section, do_parameter);
 841
 842         return (bRetval);
 843 }
 844
 845
 846 /***************************************************************************
 847 * return the max number of services
 848 ***************************************************************************/
 849 int lp_numservices(void)
 850 {
 851   return(iNumServices);
 852 }
 853
 854 /***************************************************************************
 855 * Return the number of the service with the given name, or -1 if it doesn't
 856 * exist. Note that this is a DIFFERENT ANIMAL from the internal function
 857 * getservicebyname()! This works ONLY if all services have been loaded, and
 858 * does not copy the found service.
 859 ***************************************************************************/
 860 int lp_number(char *name)
 861 {
 862    int iService;
 863
 864    for (iService = iNumServices - 1; iService >= 0; iService--)
 865       if (strcmp(lp_name(iService), name) == 0)
 866          break;
 867
 868    return (iService);
 869 }
 870