sjero.net Git - linphone/blob - coreapi/lpconfig.c

   1 /***************************************************************************
   2  *            lpconfig.c
   3  *
   4  *  Thu Mar 10 11:13:44 2005
   5  *  Copyright  2005  Simon Morlat
   6  *  Email simon.morlat@linphone.org
   7  ****************************************************************************/
   8
   9 /*
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU Library General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  */
  24
  25 #define MAX_LEN 16384
  26
  27 #include "linphonecore.h"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <assert.h>
  33 #if !defined(_WIN32_WCE)
  34 #include <errno.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #endif /*_WIN32_WCE*/
  38
  39
  40
  41 #define lp_new0(type,n) (type*)calloc(sizeof(type),n)
  42
  43 #include "lpconfig.h"
  44
  45
  46 typedef struct _LpItem{
  47         char *key;
  48         char *value;
  49 } LpItem;
  50
  51 typedef struct _LpSection{
  52         char *name;
  53         MSList *items;
  54 } LpSection;
  55
  56 struct _LpConfig{
  57         FILE *file;
  58         char *filename;
  59         MSList *sections;
  60         int modified;
  61         int readonly;
  62 };
  63
  64 LpItem * lp_item_new(const char *key, const char *value){
  65         LpItem *item=lp_new0(LpItem,1);
  66         item->key=ortp_strdup(key);
  67         item->value=ortp_strdup(value);
  68         return item;
  69 }
  70
  71 LpSection *lp_section_new(const char *name){
  72         LpSection *sec=lp_new0(LpSection,1);
  73         sec->name=ortp_strdup(name);
  74         return sec;
  75 }
  76
  77 void lp_item_destroy(void *pitem){
  78         LpItem *item=(LpItem*)pitem;
  79         free(item->key);
  80         free(item->value);
  81         free(item);
  82 }
  83
  84 void lp_section_destroy(LpSection *sec){
  85         free(sec->name);
  86         ms_list_for_each(sec->items,lp_item_destroy);
  87         ms_list_free(sec->items);
  88         free(sec);
  89 }
  90
  91 void lp_section_add_item(LpSection *sec,LpItem *item){
  92         sec->items=ms_list_append(sec->items,(void *)item);
  93 }
  94
  95 void lp_config_add_section(LpConfig *lpconfig, LpSection *section){
  96         lpconfig->sections=ms_list_append(lpconfig->sections,(void *)section);
  97 }
  98
  99 void lp_config_remove_section(LpConfig *lpconfig, LpSection *section){
 100         lpconfig->sections=ms_list_remove(lpconfig->sections,(void *)section);
 101         lp_section_destroy(section);
 102 }
 103
 104 static bool_t is_first_char(const char *start, const char *pos){
 105         const char *p;
 106         for(p=start;p<pos;p++){
 107                 if (*p!=' ') return FALSE;
 108         }
 109         return TRUE;
 110 }
 111
 112 LpSection *lp_config_find_section(LpConfig *lpconfig, const char *name){
 113         LpSection *sec;
 114         MSList *elem;
 115         /*printf("Looking for section %s\n",name);*/
 116         for (elem=lpconfig->sections;elem!=NULL;elem=ms_list_next(elem)){
 117                 sec=(LpSection*)elem->data;
 118                 if (strcmp(sec->name,name)==0){
 119                         /*printf("Section %s found\n",name);*/
 120                         return sec;
 121                 }
 122         }
 123         return NULL;
 124 }
 125
 126 LpItem *lp_section_find_item(LpSection *sec, const char *name){
 127         MSList *elem;
 128         LpItem *item;
 129         /*printf("Looking for item %s\n",name);*/
 130         for (elem=sec->items;elem!=NULL;elem=ms_list_next(elem)){
 131                 item=(LpItem*)elem->data;
 132                 if (strcmp(item->key,name)==0) {
 133                         /*printf("Item %s found\n",name);*/
 134                         return item;
 135                 }
 136         }
 137         return NULL;
 138 }
 139
 140 void lp_config_parse(LpConfig *lpconfig, FILE *file){
 141         char tmp[MAX_LEN]= {'\0'};
 142         LpSection *cur=NULL;
 143
 144         if (file==NULL) return;
 145
 146         while(fgets(tmp,MAX_LEN,file)!=NULL){
 147                 tmp[sizeof(tmp) -1] = '\0';
 148                 char *pos1,*pos2;
 149                 pos1=strchr(tmp,'[');
 150                 if (pos1!=NULL && is_first_char(tmp,pos1) ){
 151                         pos2=strchr(pos1,']');
 152                         if (pos2!=NULL){
 153                                 int nbs;
 154                                 char secname[MAX_LEN];
 155                                 secname[0]='\0';
 156                                 /* found section */
 157                                 *pos2='\0';
 158                                 nbs = sscanf(pos1+1,"%s",secname);
 159                                 if (nbs == 1 ){
 160                                         if (strlen(secname)>0){
 161                                                 cur=lp_config_find_section (lpconfig,secname);
 162                                                 if (cur==NULL){
 163                                                         cur=lp_section_new(secname);
 164                                                         lp_config_add_section(lpconfig,cur);
 165                                                 }
 166                                         }
 167                                 }else{
 168                                         ms_warning("parse error!");
 169                                 }
 170                         }
 171                 }else {
 172                         pos1=strchr(tmp,'=');
 173                         if (pos1!=NULL){
 174                                 char key[MAX_LEN];
 175                                 key[0]='\0';
 176
 177                                 *pos1='\0';
 178                                 if (sscanf(tmp,"%s",key)>0){
 179
 180                                         pos1++;
 181                                         pos2=strchr(pos1,'\r');
 182                                         if (pos2==NULL)
 183                                                 pos2=strchr(pos1,'\n');
 184                                         if (pos2==NULL) pos2=pos1+strlen(pos1);
 185                                         else {
 186                                                 *pos2='\0'; /*replace the '\n' */
 187                                                 pos2--;
 188                                         }
 189                                         /* remove ending white spaces */
 190                                         for (; pos2>pos1 && *pos2==' ';pos2--) *pos2='\0';
 191                                         if (pos2-pos1>=0){
 192                                                 /* found a pair key,value */
 193                                                 if (cur!=NULL){
 194                                                         LpItem *item=lp_section_find_item(cur,key);
 195                                                         if (item==NULL){
 196                                                                 lp_section_add_item(cur,lp_item_new(key,pos1));
 197                                                         }else{
 198                                                                 ms_free(item->value);
 199                                                                 item->value=strdup(pos1);
 200                                                         }
 201                                                         /*printf("Found %s %s=%s\n",cur->name,key,pos1);*/
 202                                                 }else{
 203                                                         ms_warning("found key,item but no sections");
 204                                                 }
 205                                         }
 206                                 }
 207                         }
 208                 }
 209         }
 210 }
 211
 212 LpConfig * lp_config_new(const char *filename){
 213         LpConfig *lpconfig=lp_new0(LpConfig,1);
 214         if (filename!=NULL){
 215                 lpconfig->filename=ortp_strdup(filename);
 216                 lpconfig->file=fopen(filename,"rw");
 217                 if (lpconfig->file!=NULL){
 218                         lp_config_parse(lpconfig,lpconfig->file);
 219                         fclose(lpconfig->file);
 220 #if !defined(_WIN32_WCE)
 221                         /* make existing configuration files non-group/world-accessible */
 222                         if (chmod(filename, S_IRUSR | S_IWUSR) == -1)
 223                                 ms_warning("unable to correct permissions on "
 224                                           "configuration file: %s",
 225                                            strerror(errno));
 226 #endif /*_WIN32_WCE*/
 227                         lpconfig->file=NULL;
 228                         lpconfig->modified=0;
 229                 }
 230         }
 231         return lpconfig;
 232 }
 233
 234 int lp_config_read_file(LpConfig *lpconfig, const char *filename){
 235         FILE* f=fopen(filename,"r");
 236         if (f!=NULL){
 237                 lp_config_parse(lpconfig,f);
 238                 fclose(f);
 239                 return 0;
 240         }
 241         ms_warning("Fail to open file %s",filename);
 242         return -1;
 243 }
 244
 245 void lp_item_set_value(LpItem *item, const char *value){
 246         free(item->value);
 247         item->value=ortp_strdup(value);
 248 }
 249
 250
 251 void lp_config_destroy(LpConfig *lpconfig){
 252         if (lpconfig->filename!=NULL) free(lpconfig->filename);
 253         ms_list_for_each(lpconfig->sections,(void (*)(void*))lp_section_destroy);
 254         ms_list_free(lpconfig->sections);
 255         free(lpconfig);
 256 }
 257
 258 void lp_section_remove_item(LpSection *sec, LpItem *item){
 259         sec->items=ms_list_remove(sec->items,(void *)item);
 260         lp_item_destroy(item);
 261 }
 262
 263 const char *lp_config_get_string(LpConfig *lpconfig, const char *section, const char *key, const char *default_string){
 264         LpSection *sec;
 265         LpItem *item;
 266         sec=lp_config_find_section(lpconfig,section);
 267         if (sec!=NULL){
 268                 item=lp_section_find_item(sec,key);
 269                 if (item!=NULL) return item->value;
 270         }
 271         return default_string;
 272 }
 273
 274 bool_t lp_config_get_range(LpConfig *lpconfig, const char *section, const char *key, int *min, int *max, int default_min, int default_max) {
 275         const char *str = lp_config_get_string(lpconfig, section, key, NULL);
 276         if (str != NULL) {
 277                 char *minusptr = strchr(str, '-');
 278                 if ((minusptr == NULL) || (minusptr == str)) {
 279                         *min = default_min;
 280                         *max = default_max;
 281                         return FALSE;
 282                 }
 283                 *min = atoi(str);
 284                 *max = atoi(minusptr + 1);
 285                 return TRUE;
 286         } else {
 287                 *min = default_min;
 288                 *max = default_max;
 289                 return TRUE;
 290         }
 291 }
 292
 293 int lp_config_get_int(LpConfig *lpconfig,const char *section, const char *key, int default_value){
 294         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 295         if (str!=NULL) {
 296                 int ret=0;
 297                 if (strstr(str,"0x")==str){
 298                         sscanf(str,"%x",&ret);
 299                 }else ret=atoi(str);
 300                 return ret;
 301         }
 302         else return default_value;
 303 }
 304
 305 int64_t lp_config_get_int64(LpConfig *lpconfig,const char *section, const char *key, int64_t default_value){
 306         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 307         if (str!=NULL) {
 308 #ifdef WIN32
 309                 return (int64_t)_atoi64(str);
 310 #else
 311                 return atoll(str);
 312 #endif
 313         }
 314         else return default_value;
 315 }
 316
 317 float lp_config_get_float(LpConfig *lpconfig,const char *section, const char *key, float default_value){
 318         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 319         float ret=default_value;
 320         if (str==NULL) return default_value;
 321         sscanf(str,"%f",&ret);
 322         return ret;
 323 }
 324
 325 void lp_config_set_string(LpConfig *lpconfig,const char *section, const char *key, const char *value){
 326         LpItem *item;
 327         LpSection *sec=lp_config_find_section(lpconfig,section);
 328         if (sec!=NULL){
 329                 item=lp_section_find_item(sec,key);
 330                 if (item!=NULL){
 331                         if (value!=NULL)
 332                                 lp_item_set_value(item,value);
 333                         else lp_section_remove_item(sec,item);
 334                 }else{
 335                         if (value!=NULL)
 336                                 lp_section_add_item(sec,lp_item_new(key,value));
 337                 }
 338         }else if (value!=NULL){
 339                 sec=lp_section_new(section);
 340                 lp_config_add_section(lpconfig,sec);
 341                 lp_section_add_item(sec,lp_item_new(key,value));
 342         }
 343         lpconfig->modified++;
 344 }
 345
 346 void lp_config_set_range(LpConfig *lpconfig, const char *section, const char *key, int min_value, int max_value) {
 347         char tmp[30];
 348         snprintf(tmp, sizeof(tmp), "%i-%i", min_value, max_value);
 349         lp_config_set_string(lpconfig, section, key, tmp);
 350 }
 351
 352 void lp_config_set_int(LpConfig *lpconfig,const char *section, const char *key, int value){
 353         char tmp[30];
 354         snprintf(tmp,sizeof(tmp),"%i",value);
 355         lp_config_set_string(lpconfig,section,key,tmp);
 356 }
 357
 358 void lp_config_set_int_hex(LpConfig *lpconfig,const char *section, const char *key, int value){
 359         char tmp[30];
 360         snprintf(tmp,sizeof(tmp),"0x%x",value);
 361         lp_config_set_string(lpconfig,section,key,tmp);
 362 }
 363
 364 void lp_config_set_int64(LpConfig *lpconfig,const char *section, const char *key, int64_t value){
 365         char tmp[30];
 366         snprintf(tmp,sizeof(tmp),"%lli",(long long)value);
 367         lp_config_set_string(lpconfig,section,key,tmp);
 368 }
 369
 370
 371 void lp_config_set_float(LpConfig *lpconfig,const char *section, const char *key, float value){
 372         char tmp[30];
 373         snprintf(tmp,sizeof(tmp),"%f",value);
 374         lp_config_set_string(lpconfig,section,key,tmp);
 375 }
 376
 377 void lp_item_write(LpItem *item, FILE *file){
 378         fprintf(file,"%s=%s\n",item->key,item->value);
 379 }
 380
 381 void lp_section_write(LpSection *sec, FILE *file){
 382         fprintf(file,"[%s]\n",sec->name);
 383         ms_list_for_each2(sec->items,(void (*)(void*, void*))lp_item_write,(void *)file);
 384         fprintf(file,"\n");
 385 }
 386
 387 int lp_config_sync(LpConfig *lpconfig){
 388         FILE *file;
 389         if (lpconfig->filename==NULL) return -1;
 390         if (lpconfig->readonly) return 0;
 391 #ifndef WIN32
 392         /* don't create group/world-accessible files */
 393         (void) umask(S_IRWXG | S_IRWXO);
 394 #endif
 395         file=fopen(lpconfig->filename,"w");
 396         if (file==NULL){
 397                 ms_warning("Could not write %s ! Maybe it is read-only. Configuration will not be saved.",lpconfig->filename);
 398                 lpconfig->readonly=1;
 399                 return -1;
 400         }
 401         ms_list_for_each2(lpconfig->sections,(void (*)(void *,void*))lp_section_write,(void *)file);
 402         fclose(file);
 403         lpconfig->modified=0;
 404         return 0;
 405 }
 406
 407 int lp_config_has_section(LpConfig *lpconfig, const char *section){
 408         if (lp_config_find_section(lpconfig,section)!=NULL) return 1;
 409         return 0;
 410 }
 411
 412 void lp_config_clean_section(LpConfig *lpconfig, const char *section){
 413         LpSection *sec=lp_config_find_section(lpconfig,section);
 414         if (sec!=NULL){
 415                 lp_config_remove_section(lpconfig,sec);
 416         }
 417         lpconfig->modified++;
 418 }
 419
 420 int lp_config_needs_commit(const LpConfig *lpconfig){
 421         return lpconfig->modified>0;
 422 }