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(const 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(const 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                                         }
 188                                         /* remove ending white spaces */
 189                                         for (; pos2>pos1 && pos2[-1]==' ';pos2--) pos2[-1]='\0';
 190
 191                                         if (pos2-pos1>=0){
 192                                                 /* found a pair key,value */
 193
 194                                                 if (cur!=NULL){
 195                                                         LpItem *item=lp_section_find_item(cur,key);
 196                                                         if (item==NULL){
 197                                                                 lp_section_add_item(cur,lp_item_new(key,pos1));
 198                                                         }else{
 199                                                                 ms_free(item->value);
 200                                                                 item->value=strdup(pos1);
 201                                                         }
 202                                                         /*ms_message("Found %s=%s",key,pos1);*/
 203                                                 }else{
 204                                                         ms_warning("found key,item but no sections");
 205                                                 }
 206                                         }
 207                                 }
 208                         }
 209                 }
 210         }
 211 }
 212
 213 LpConfig * lp_config_new(const char *filename){
 214         LpConfig *lpconfig=lp_new0(LpConfig,1);
 215         if (filename!=NULL){
 216                 ms_message("Using (r/w) config information from %s", filename);
 217                 lpconfig->filename=ortp_strdup(filename);
 218                 lpconfig->file=fopen(filename,"r+");
 219                 if (lpconfig->file!=NULL){
 220                         struct stat fileStat;
 221                         lp_config_parse(lpconfig,lpconfig->file);
 222                         fclose(lpconfig->file);
 223 #if !defined(_WIN32_WCE)
 224                         if ((stat(filename,&fileStat) == 0) && (S_ISREG(fileStat.st_mode))) {
 225                                 /* make existing configuration files non-group/world-accessible */
 226                                 if (chmod(filename, S_IRUSR | S_IWUSR) == -1) {
 227                                         ms_warning("unable to correct permissions on "
 228                                         "configuration file: %s", strerror(errno));
 229                                 }
 230                         }
 231 #endif /*_WIN32_WCE*/
 232                         lpconfig->file=NULL;
 233                         lpconfig->modified=0;
 234                 }
 235         }
 236         return lpconfig;
 237 }
 238
 239 int lp_config_read_file(LpConfig *lpconfig, const char *filename){
 240         FILE* f=fopen(filename,"r");
 241         if (f!=NULL){
 242                 ms_message("Reading config information from %s", filename);
 243                 lp_config_parse(lpconfig,f);
 244                 fclose(f);
 245                 return 0;
 246         }
 247         ms_warning("Fail to open file %s",filename);
 248         return -1;
 249 }
 250
 251 void lp_item_set_value(LpItem *item, const char *value){
 252         free(item->value);
 253         item->value=ortp_strdup(value);
 254 }
 255
 256
 257 void lp_config_destroy(LpConfig *lpconfig){
 258         if (lpconfig->filename!=NULL) free(lpconfig->filename);
 259         ms_list_for_each(lpconfig->sections,(void (*)(void*))lp_section_destroy);
 260         ms_list_free(lpconfig->sections);
 261         free(lpconfig);
 262 }
 263
 264 void lp_section_remove_item(LpSection *sec, LpItem *item){
 265         sec->items=ms_list_remove(sec->items,(void *)item);
 266         lp_item_destroy(item);
 267 }
 268
 269 const char *lp_config_get_string(const LpConfig *lpconfig, const char *section, const char *key, const char *default_string){
 270         LpSection *sec;
 271         LpItem *item;
 272         sec=lp_config_find_section(lpconfig,section);
 273         if (sec!=NULL){
 274                 item=lp_section_find_item(sec,key);
 275                 if (item!=NULL) return item->value;
 276         }
 277         return default_string;
 278 }
 279
 280 bool_t lp_config_get_range(const LpConfig *lpconfig, const char *section, const char *key, int *min, int *max, int default_min, int default_max) {
 281         const char *str = lp_config_get_string(lpconfig, section, key, NULL);
 282         if (str != NULL) {
 283                 char *minusptr = strchr(str, '-');
 284                 if ((minusptr == NULL) || (minusptr == str)) {
 285                         *min = default_min;
 286                         *max = default_max;
 287                         return FALSE;
 288                 }
 289                 *min = atoi(str);
 290                 *max = atoi(minusptr + 1);
 291                 return TRUE;
 292         } else {
 293                 *min = default_min;
 294                 *max = default_max;
 295                 return TRUE;
 296         }
 297 }
 298
 299 int lp_config_get_int(const LpConfig *lpconfig,const char *section, const char *key, int default_value){
 300         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 301         if (str!=NULL) {
 302                 int ret=0;
 303                 if (strstr(str,"0x")==str){
 304                         sscanf(str,"%x",&ret);
 305                 }else ret=atoi(str);
 306                 return ret;
 307         }
 308         else return default_value;
 309 }
 310
 311 int64_t lp_config_get_int64(const LpConfig *lpconfig,const char *section, const char *key, int64_t default_value){
 312         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 313         if (str!=NULL) {
 314 #ifdef WIN32
 315                 return (int64_t)_atoi64(str);
 316 #else
 317                 return atoll(str);
 318 #endif
 319         }
 320         else return default_value;
 321 }
 322
 323 float lp_config_get_float(const LpConfig *lpconfig,const char *section, const char *key, float default_value){
 324         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 325         float ret=default_value;
 326         if (str==NULL) return default_value;
 327         sscanf(str,"%f",&ret);
 328         return ret;
 329 }
 330
 331 void lp_config_set_string(LpConfig *lpconfig,const char *section, const char *key, const char *value){
 332         LpItem *item;
 333         LpSection *sec=lp_config_find_section(lpconfig,section);
 334         if (sec!=NULL){
 335                 item=lp_section_find_item(sec,key);
 336                 if (item!=NULL){
 337                         if (value!=NULL)
 338                                 lp_item_set_value(item,value);
 339                         else lp_section_remove_item(sec,item);
 340                 }else{
 341                         if (value!=NULL)
 342                                 lp_section_add_item(sec,lp_item_new(key,value));
 343                 }
 344         }else if (value!=NULL){
 345                 sec=lp_section_new(section);
 346                 lp_config_add_section(lpconfig,sec);
 347                 lp_section_add_item(sec,lp_item_new(key,value));
 348         }
 349         lpconfig->modified++;
 350 }
 351
 352 void lp_config_set_range(LpConfig *lpconfig, const char *section, const char *key, int min_value, int max_value) {
 353         char tmp[30];
 354         snprintf(tmp, sizeof(tmp), "%i-%i", min_value, max_value);
 355         lp_config_set_string(lpconfig, section, key, tmp);
 356 }
 357
 358 void lp_config_set_int(LpConfig *lpconfig,const char *section, const char *key, int value){
 359         char tmp[30];
 360         snprintf(tmp,sizeof(tmp),"%i",value);
 361         lp_config_set_string(lpconfig,section,key,tmp);
 362 }
 363
 364 void lp_config_set_int_hex(LpConfig *lpconfig,const char *section, const char *key, int value){
 365         char tmp[30];
 366         snprintf(tmp,sizeof(tmp),"0x%x",value);
 367         lp_config_set_string(lpconfig,section,key,tmp);
 368 }
 369
 370 void lp_config_set_int64(LpConfig *lpconfig,const char *section, const char *key, int64_t value){
 371         char tmp[30];
 372         snprintf(tmp,sizeof(tmp),"%lli",(long long)value);
 373         lp_config_set_string(lpconfig,section,key,tmp);
 374 }
 375
 376
 377 void lp_config_set_float(LpConfig *lpconfig,const char *section, const char *key, float value){
 378         char tmp[30];
 379         snprintf(tmp,sizeof(tmp),"%f",value);
 380         lp_config_set_string(lpconfig,section,key,tmp);
 381 }
 382
 383 void lp_item_write(LpItem *item, FILE *file){
 384         fprintf(file,"%s=%s\n",item->key,item->value);
 385 }
 386
 387 void lp_section_write(LpSection *sec, FILE *file){
 388         fprintf(file,"[%s]\n",sec->name);
 389         ms_list_for_each2(sec->items,(void (*)(void*, void*))lp_item_write,(void *)file);
 390         fprintf(file,"\n");
 391 }
 392
 393 int lp_config_sync(LpConfig *lpconfig){
 394         FILE *file;
 395         if (lpconfig->filename==NULL) return -1;
 396         if (lpconfig->readonly) return 0;
 397 #ifndef WIN32
 398         /* don't create group/world-accessible files */
 399         (void) umask(S_IRWXG | S_IRWXO);
 400 #endif
 401         file=fopen(lpconfig->filename,"w");
 402         if (file==NULL){
 403                 ms_warning("Could not write %s ! Maybe it is read-only. Configuration will not be saved.",lpconfig->filename);
 404                 lpconfig->readonly=1;
 405                 return -1;
 406         }
 407         ms_list_for_each2(lpconfig->sections,(void (*)(void *,void*))lp_section_write,(void *)file);
 408         fclose(file);
 409         lpconfig->modified=0;
 410         return 0;
 411 }
 412
 413 int lp_config_has_section(const LpConfig *lpconfig, const char *section){
 414         if (lp_config_find_section(lpconfig,section)!=NULL) return 1;
 415         return 0;
 416 }
 417
 418 void lp_config_for_each_section(const LpConfig *lpconfig, void (*callback)(const char *section, void *ctx), void *ctx) {
 419         LpSection *sec;
 420         MSList *elem;
 421         for (elem=lpconfig->sections;elem!=NULL;elem=ms_list_next(elem)){
 422                 sec=(LpSection*)elem->data;
 423                 callback(sec->name, ctx);
 424         }
 425 }
 426
 427 void lp_config_for_each_entry(const LpConfig *lpconfig, const char *section, void (*callback)(const char *entry, void *ctx), void *ctx) {
 428         LpItem *item;
 429         MSList *elem;
 430         LpSection *sec=lp_config_find_section(lpconfig,section);
 431         if (sec!=NULL){
 432                 for (elem=sec->items;elem!=NULL;elem=ms_list_next(elem)){
 433                         item=(LpItem*)elem->data;
 434                         callback(item->key, ctx);
 435                 }
 436         }
 437 }
 438
 439 void lp_config_clean_section(LpConfig *lpconfig, const char *section){
 440         LpSection *sec=lp_config_find_section(lpconfig,section);
 441         if (sec!=NULL){
 442                 lp_config_remove_section(lpconfig,sec);
 443         }
 444         lpconfig->modified++;
 445 }
 446
 447 int lp_config_needs_commit(const LpConfig *lpconfig){
 448         return lpconfig->modified>0;
 449 }