1 /* This is based on loadparm.c from Samba, written by Andrew Tridgell
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * This module provides suitable callback functions for the params
24 * module. It builds the internal table of service details which is
25 * then used by the rest of the server.
29 * 1) add it to the global or service structure definition
30 * 2) add it to the parm_table
31 * 3) add it to the list of available functions (eg: using FN_GLOBAL_STRING())
32 * 4) If it's a global then initialise it in init_globals. If a local
33 * (ie. service) parameter then initialise it in the sDefault structure
37 * The configuration file is processed sequentially for speed. It is NOT
38 * accessed randomly as happens in 'real' Windows. For this reason, there
39 * is a fair bit of sequence-dependent code here - ie., code which assumes
40 * that certain things happen before others. In particular, the code which
41 * happens at the boundary between sections is delicately poised, so be
50 #define Realloc realloc
51 #define PTR_DIFF(p1,p2) ((ptrdiff_t)(((char *)(p1)) - (char *)(p2)))
52 #define strequal(a,b) (strcasecmp(a,b)==0)
53 #define BOOLSTR(b) ((b) ? "Yes" : "No")
54 typedef char pstring[1024];
55 #define pstrcpy(a,b) strlcpy(a,b,sizeof(pstring)-1)
57 /* the following are used by loadparm for option lists */
60 P_BOOL,P_BOOLREV,P_CHAR,P_INTEGER,P_OCTAL,
61 P_STRING,P_GSTRING,P_ENUM,P_SEP
66 P_LOCAL,P_GLOBAL,P_SEPARATOR,P_NONE
80 struct enum_list *enum_list;
84 static BOOL bLoaded = False;
87 #define GLOBAL_NAME "global"
90 /* some helpful bits */
91 #define pSERVICE(i) ServicePtrs[i]
92 #define iSERVICE(i) (*pSERVICE(i))
93 #define LP_SNUM_OK(iService) (((iService) >= 0) && ((iService) < iNumServices))
96 * This structure describes global (ie., server-wide) parameters.
106 static global Globals;
111 * This structure describes a single service.
127 /* This is a default service used to prime a services structure */
128 static service sDefault =
133 True, /* read only */
137 NULL, /* hosts allow */
138 NULL, /* hosts deny */
143 /* local variables */
144 static service **ServicePtrs = NULL;
145 static int iNumServices = 0;
146 static int iServiceIndex = 0;
147 static BOOL bInGlobalSection = True;
149 #define NUMPARAMETERS (sizeof(parm_table) / sizeof(struct parm_struct))
152 /* note that we do not initialise the defaults union - it is not allowed in ANSI C */
153 static struct parm_struct parm_table[] =
155 {"max connections", P_INTEGER, P_GLOBAL, &Globals.max_connections,NULL, 0},
156 {"motd file", P_STRING, P_GLOBAL, &Globals.motd_file, NULL, 0},
157 {"lock file", P_STRING, P_GLOBAL, &Globals.lock_file, NULL, 0},
158 {"syslog facility", P_INTEGER, P_GLOBAL, &Globals.syslog_facility, NULL,0},
159 {"name", P_STRING, P_LOCAL, &sDefault.name, NULL, 0},
160 {"comment", P_STRING, P_LOCAL, &sDefault.comment, NULL, 0},
161 {"path", P_STRING, P_LOCAL, &sDefault.path, NULL, 0},
162 {"read only", P_BOOL, P_LOCAL, &sDefault.read_only, NULL, 0},
163 {"list", P_BOOL, P_LOCAL, &sDefault.list, NULL, 0},
164 {"uid", P_STRING, P_LOCAL, &sDefault.uid, NULL, 0},
165 {"gid", P_STRING, P_LOCAL, &sDefault.gid, NULL, 0},
166 {"hosts allow", P_STRING, P_LOCAL, &sDefault.hosts_allow, NULL, 0},
167 {"hosts deny", P_STRING, P_LOCAL, &sDefault.hosts_deny, NULL, 0},
168 {NULL, P_BOOL, P_NONE, NULL, NULL, 0}
172 /***************************************************************************
173 Initialise the global parameter structure.
174 ***************************************************************************/
175 static void init_globals(void)
178 Globals.syslog_facility = LOG_DAEMON;
180 Globals.lock_file = "/var/run/rsyncd.lock";
183 /***************************************************************************
184 Initialise the sDefault parameter structure.
185 ***************************************************************************/
186 static void init_locals(void)
192 In this section all the functions that are used to access the
193 parameters from the rest of the program are defined
196 #define FN_GLOBAL_STRING(fn_name,ptr) \
197 char *fn_name(void) {return(*(char **)(ptr) ? *(char **)(ptr) : "");}
198 #define FN_GLOBAL_BOOL(fn_name,ptr) \
199 BOOL fn_name(void) {return(*(BOOL *)(ptr));}
200 #define FN_GLOBAL_CHAR(fn_name,ptr) \
201 char fn_name(void) {return(*(char *)(ptr));}
202 #define FN_GLOBAL_INTEGER(fn_name,ptr) \
203 int fn_name(void) {return(*(int *)(ptr));}
205 #define FN_LOCAL_STRING(fn_name,val) \
206 char *fn_name(int i) {return((LP_SNUM_OK(i)&&pSERVICE(i)->val)?pSERVICE(i)->val : (sDefault.val?sDefault.val:""));}
207 #define FN_LOCAL_BOOL(fn_name,val) \
208 BOOL fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
209 #define FN_LOCAL_CHAR(fn_name,val) \
210 char fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
211 #define FN_LOCAL_INTEGER(fn_name,val) \
212 int fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
215 FN_GLOBAL_STRING(lp_motd_file, &Globals.motd_file)
216 FN_GLOBAL_STRING(lp_lock_file, &Globals.lock_file)
217 FN_GLOBAL_INTEGER(lp_max_connections, &Globals.max_connections)
218 FN_GLOBAL_INTEGER(lp_syslog_facility, &Globals.syslog_facility)
219 FN_LOCAL_STRING(lp_name, name)
220 FN_LOCAL_STRING(lp_comment, comment)
221 FN_LOCAL_STRING(lp_path, path)
222 FN_LOCAL_BOOL(lp_read_only, read_only)
223 FN_LOCAL_BOOL(lp_list, list)
224 FN_LOCAL_STRING(lp_uid, uid)
225 FN_LOCAL_STRING(lp_gid, gid)
226 FN_LOCAL_STRING(lp_hosts_allow, hosts_allow)
227 FN_LOCAL_STRING(lp_hosts_deny, hosts_deny)
229 /* local prototypes */
230 static int strwicmp( char *psz1, char *psz2 );
231 static int map_parameter( char *parmname);
232 static BOOL set_boolean( BOOL *pb, char *parmvalue );
233 static int getservicebyname(char *name, service *pserviceDest);
234 static void copy_service( service *pserviceDest,
235 service *pserviceSource);
236 static BOOL do_parameter(char *parmname, char *parmvalue);
237 static BOOL do_section(char *sectionname);
240 /***************************************************************************
241 initialise a service to the defaults
242 ***************************************************************************/
243 static void init_service(service *pservice)
245 bzero((char *)pservice,sizeof(service));
246 copy_service(pservice,&sDefault);
249 static void string_set(char **s, char *v)
256 if (!*s) exit_cleanup(1);
260 /***************************************************************************
261 add a new service to the services array initialising it with the given
263 ***************************************************************************/
264 static int add_a_service(service *pservice, char *name)
268 int num_to_alloc = iNumServices+1;
270 tservice = *pservice;
272 /* it might already exist */
275 i = getservicebyname(name,NULL);
282 ServicePtrs = (service **)Realloc(ServicePtrs,sizeof(service *)*num_to_alloc);
284 pSERVICE(iNumServices) = (service *)malloc(sizeof(service));
286 if (!ServicePtrs || !pSERVICE(iNumServices))
291 init_service(pSERVICE(i));
292 copy_service(pSERVICE(i),&tservice);
294 string_set(&iSERVICE(i).name,name);
299 /***************************************************************************
300 Do a case-insensitive, whitespace-ignoring string compare.
301 ***************************************************************************/
302 static int strwicmp(char *psz1, char *psz2)
304 /* if BOTH strings are NULL, return TRUE, if ONE is NULL return */
305 /* appropriate value. */
315 /* sync the strings on first non-whitespace */
318 while (isspace(*psz1))
320 while (isspace(*psz2))
322 if (toupper(*psz1) != toupper(*psz2) || *psz1 == '\0' || *psz2 == '\0')
327 return (*psz1 - *psz2);
330 /***************************************************************************
331 Map a parameter's string representation to something we can use.
332 Returns False if the parameter string is not recognised, else TRUE.
333 ***************************************************************************/
334 static int map_parameter(char *parmname)
338 if (*parmname == '-')
341 for (iIndex = 0; parm_table[iIndex].label; iIndex++)
342 if (strwicmp(parm_table[iIndex].label, parmname) == 0)
345 rprintf(FERROR, "Unknown parameter encountered: \"%s\"\n", parmname);
350 /***************************************************************************
351 Set a boolean variable from the text value stored in the passed string.
352 Returns True in success, False if the passed string does not correctly
354 ***************************************************************************/
355 static BOOL set_boolean(BOOL *pb, char *parmvalue)
360 if (strwicmp(parmvalue, "yes") == 0 ||
361 strwicmp(parmvalue, "true") == 0 ||
362 strwicmp(parmvalue, "1") == 0)
365 if (strwicmp(parmvalue, "no") == 0 ||
366 strwicmp(parmvalue, "False") == 0 ||
367 strwicmp(parmvalue, "0") == 0)
371 rprintf(FERROR, "Badly formed boolean in configuration file: \"%s\".\n",
378 /***************************************************************************
379 Find a service by name. Otherwise works like get_service.
380 ***************************************************************************/
381 static int getservicebyname(char *name, service *pserviceDest)
385 for (iService = iNumServices - 1; iService >= 0; iService--)
386 if (strwicmp(iSERVICE(iService).name, name) == 0)
388 if (pserviceDest != NULL)
389 copy_service(pserviceDest, pSERVICE(iService));
398 /***************************************************************************
399 Copy a service structure to another
401 ***************************************************************************/
402 static void copy_service(service *pserviceDest,
403 service *pserviceSource)
407 for (i=0;parm_table[i].label;i++)
408 if (parm_table[i].ptr && parm_table[i].class == P_LOCAL) {
409 void *def_ptr = parm_table[i].ptr;
411 ((char *)pserviceSource) + PTR_DIFF(def_ptr,&sDefault);
413 ((char *)pserviceDest) + PTR_DIFF(def_ptr,&sDefault);
415 switch (parm_table[i].type)
419 *(BOOL *)dest_ptr = *(BOOL *)src_ptr;
425 *(int *)dest_ptr = *(int *)src_ptr;
429 *(char *)dest_ptr = *(char *)src_ptr;
433 string_set(dest_ptr,*(char **)src_ptr);
443 /***************************************************************************
444 Process a parameter for a particular service number. If snum < 0
445 then assume we are in the globals
446 ***************************************************************************/
447 static BOOL lp_do_parameter(int snum, char *parmname, char *parmvalue)
450 void *parm_ptr=NULL; /* where we are going to store the result */
453 parmnum = map_parameter(parmname);
457 rprintf(FERROR, "Ignoring unknown parameter \"%s\"\n", parmname);
461 def_ptr = parm_table[parmnum].ptr;
463 /* we might point at a service, the default service or a global */
467 if (parm_table[parmnum].class == P_GLOBAL) {
468 rprintf(FERROR, "Global parameter %s found in service section!\n",parmname);
471 parm_ptr = ((char *)pSERVICE(snum)) + PTR_DIFF(def_ptr,&sDefault);
474 /* now switch on the type of variable it is */
475 switch (parm_table[parmnum].type)
478 set_boolean(parm_ptr,parmvalue);
482 set_boolean(parm_ptr,parmvalue);
483 *(BOOL *)parm_ptr = ! *(BOOL *)parm_ptr;
487 *(int *)parm_ptr = atoi(parmvalue);
491 *(char *)parm_ptr = *parmvalue;
495 sscanf(parmvalue,"%o",(int *)parm_ptr);
499 string_set(parm_ptr,parmvalue);
503 strcpy((char *)parm_ptr,parmvalue);
507 for (i=0;parm_table[parmnum].enum_list[i].name;i++) {
508 if (strequal(parmvalue, parm_table[parmnum].enum_list[i].name)) {
509 *(int *)parm_ptr = parm_table[parmnum].enum_list[i].value;
521 /***************************************************************************
523 ***************************************************************************/
524 static BOOL do_parameter(char *parmname, char *parmvalue)
526 return lp_do_parameter(bInGlobalSection?-2:iServiceIndex, parmname, parmvalue);
529 /***************************************************************************
530 Process a new section (service). At this stage all sections are services.
531 Later we'll have special sections that permit server parameters to be set.
532 Returns True on success, False on failure.
533 ***************************************************************************/
534 static BOOL do_section(char *sectionname)
537 BOOL isglobal = (strwicmp(sectionname, GLOBAL_NAME) == 0);
540 /* if we were in a global section then do the local inits */
541 if (bInGlobalSection && !isglobal)
544 /* if we've just struck a global section, note the fact. */
545 bInGlobalSection = isglobal;
547 /* check for multiple global sections */
548 if (bInGlobalSection)
553 /* if we have a current service, tidy it up before moving on */
556 if (iServiceIndex >= 0)
559 /* if all is still well, move to the next record in the services array */
562 /* We put this here to avoid an odd message order if messages are */
563 /* issued by the post-processing of a previous section. */
565 if ((iServiceIndex=add_a_service(&sDefault,sectionname)) < 0)
567 rprintf(FERROR,"Failed to add a new service\n");
576 /***************************************************************************
577 Load the services array from the services file. Return True on success,
579 ***************************************************************************/
580 BOOL lp_load(char *pszFname)
587 bInGlobalSection = True;
591 pstrcpy(n2,pszFname);
593 /* We get sections first, so have to start 'behind' to make up */
595 bRetval = pm_process(n2, do_section, do_parameter);
603 /***************************************************************************
604 return the max number of services
605 ***************************************************************************/
606 int lp_numservices(void)
608 return(iNumServices);
611 /***************************************************************************
612 Return the number of the service with the given name, or -1 if it doesn't
613 exist. Note that this is a DIFFERENT ANIMAL from the internal function
614 getservicebyname()! This works ONLY if all services have been loaded, and
615 does not copy the found service.
616 ***************************************************************************/
617 int lp_number(char *name)
621 for (iService = iNumServices - 1; iService >= 0; iService--)
622 if (strequal(lp_name(iService), name))