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 4096
  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         ms_error("Entering lp_config_parse");
 142         char tmp[MAX_LEN]= {'\0'};
 143         LpSection *cur=NULL;
 144
 145         if (file==NULL) return;
 146
 147         ms_message("Entering While");
 148         while(fgets(tmp,MAX_LEN,file)!=NULL){
 149                 tmp[sizeof(tmp) -1] = '\0';
 150                 char *pos1,*pos2;
 151                 pos1=strchr(tmp,'[');
 152                 ms_message("Pos1 = %s", pos1);
 153                 if (pos1!=NULL && is_first_char(tmp,pos1) ){
 154                         pos2=strchr(pos1,']');
 155                         if (pos2!=NULL){
 156                                 int nbs;
 157                                 char secname[MAX_LEN];
 158                                 secname[0]='\0';
 159                                 /* found section */
 160                                 *pos2='\0';
 161                                 nbs = sscanf(pos1+1,"%s",secname);
 162                                 if (nbs == 1 ){
 163                                         if (strlen(secname)>0){
 164                                                 cur=lp_config_find_section (lpconfig,secname);
 165                                                 if (cur==NULL){
 166                                                         cur=lp_section_new(secname);
 167                                                         lp_config_add_section(lpconfig,cur);
 168                                                 }
 169                                         }
 170                                 }else{
 171                                         ms_warning("parse error!");
 172                                 }
 173                         }
 174                 }else {
 175                         pos1=strchr(tmp,'=');
 176                         if (pos1!=NULL){
 177                                 char key[MAX_LEN];
 178                                 key[0]='\0';
 179
 180                                 *pos1='\0';
 181                                 if (sscanf(tmp,"%s",key)>0){
 182
 183                                         pos1++;
 184                                         pos2=strchr(pos1,'\r');
 185                                         if (pos2==NULL)
 186                                                 pos2=strchr(pos1,'\n');
 187                                         if (pos2==NULL) pos2=pos1+strlen(pos1);
 188                                         else {
 189                                                 *pos2='\0'; /*replace the '\n' */
 190                                                 pos2--;
 191                                         }
 192                                         /* remove ending white spaces */
 193                                         for (; pos2>pos1 && *pos2==' ';pos2--) *pos2='\0';
 194                                         if (pos2-pos1>=0){
 195                                                 /* found a pair key,value */
 196                                                 if (cur!=NULL){
 197                                                         LpItem *item=lp_section_find_item(cur,key);
 198                                                         if (item==NULL){
 199                                                                 lp_section_add_item(cur,lp_item_new(key,pos1));
 200                                                         }else{
 201                                                                 ms_free(item->value);
 202                                                                 item->value=strdup(pos1);
 203                                                         }
 204                                                         /*printf("Found %s %s=%s\n",cur->name,key,pos1);*/
 205                                                 }else{
 206                                                         ms_warning("found key,item but no sections");
 207                                                 }
 208                                         }
 209                                 }
 210                         }
 211                 }
 212         }
 213 }
 214
 215 LpConfig * lp_config_new(const char *filename){
 216         LpConfig *lpconfig=lp_new0(LpConfig,1);
 217         if (filename!=NULL){
 218                 lpconfig->filename=ortp_strdup(filename);
 219                 lpconfig->file=fopen(filename,"rw");
 220                 if (lpconfig->file!=NULL){
 221                         lp_config_parse(lpconfig,lpconfig->file);
 222                         fclose(lpconfig->file);
 223 #if !defined(_WIN32_WCE)
 224                         /* make existing configuration files non-group/world-accessible */
 225                         if (chmod(filename, S_IRUSR | S_IWUSR) == -1)
 226                                 ms_warning("unable to correct permissions on "
 227                                           "configuration file: %s",
 228                                            strerror(errno));
 229 #endif /*_WIN32_WCE*/
 230                         lpconfig->file=NULL;
 231                         lpconfig->modified=0;
 232                 }
 233         }
 234         return lpconfig;
 235 }
 236
 237 int lp_config_read_file(LpConfig *lpconfig, const char *filename){
 238         FILE* f=fopen(filename,"r");
 239         if (f!=NULL){
 240                 lp_config_parse(lpconfig,f);
 241                 fclose(f);
 242                 return 0;
 243         }
 244         ms_warning("Fail to open file %s",filename);
 245         return -1;
 246 }
 247
 248 void lp_item_set_value(LpItem *item, const char *value){
 249         free(item->value);
 250         item->value=ortp_strdup(value);
 251 }
 252
 253
 254 void lp_config_destroy(LpConfig *lpconfig){
 255         if (lpconfig->filename!=NULL) free(lpconfig->filename);
 256         ms_list_for_each(lpconfig->sections,(void (*)(void*))lp_section_destroy);
 257         ms_list_free(lpconfig->sections);
 258         free(lpconfig);
 259 }
 260
 261 void lp_section_remove_item(LpSection *sec, LpItem *item){
 262         sec->items=ms_list_remove(sec->items,(void *)item);
 263         lp_item_destroy(item);
 264 }
 265
 266 const char *lp_config_get_string(LpConfig *lpconfig, const char *section, const char *key, const char *default_string){
 267         LpSection *sec;
 268         LpItem *item;
 269         sec=lp_config_find_section(lpconfig,section);
 270         if (sec!=NULL){
 271                 item=lp_section_find_item(sec,key);
 272                 if (item!=NULL) return item->value;
 273         }
 274         return default_string;
 275 }
 276
 277 int lp_config_get_int(LpConfig *lpconfig,const char *section, const char *key, int default_value){
 278         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 279         if (str!=NULL) return atoi(str);
 280         else return default_value;
 281 }
 282
 283 float lp_config_get_float(LpConfig *lpconfig,const char *section, const char *key, float default_value){
 284         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 285         float ret=default_value;
 286         if (str==NULL) return default_value;
 287         sscanf(str,"%f",&ret);
 288         return ret;
 289 }
 290
 291 void lp_config_set_string(LpConfig *lpconfig,const char *section, const char *key, const char *value){
 292         LpItem *item;
 293         LpSection *sec=lp_config_find_section(lpconfig,section);
 294         if (sec!=NULL){
 295                 item=lp_section_find_item(sec,key);
 296                 if (item!=NULL){
 297                         if (value!=NULL)
 298                                 lp_item_set_value(item,value);
 299                         else lp_section_remove_item(sec,item);
 300                 }else{
 301                         if (value!=NULL)
 302                                 lp_section_add_item(sec,lp_item_new(key,value));
 303                 }
 304         }else if (value!=NULL){
 305                 sec=lp_section_new(section);
 306                 lp_config_add_section(lpconfig,sec);
 307                 lp_section_add_item(sec,lp_item_new(key,value));
 308         }
 309         lpconfig->modified++;
 310 }
 311
 312 void lp_config_set_int(LpConfig *lpconfig,const char *section, const char *key, int value){
 313         char tmp[30];
 314         snprintf(tmp,sizeof(tmp),"%i",value);
 315         lp_config_set_string(lpconfig,section,key,tmp);
 316 }
 317
 318 void lp_config_set_float(LpConfig *lpconfig,const char *section, const char *key, float value){
 319         char tmp[30];
 320         snprintf(tmp,sizeof(tmp),"%f",value);
 321         lp_config_set_string(lpconfig,section,key,tmp);
 322 }
 323
 324 void lp_item_write(LpItem *item, FILE *file){
 325         fprintf(file,"%s=%s\n",item->key,item->value);
 326 }
 327
 328 void lp_section_write(LpSection *sec, FILE *file){
 329         fprintf(file,"[%s]\n",sec->name);
 330         ms_list_for_each2(sec->items,(void (*)(void*, void*))lp_item_write,(void *)file);
 331         fprintf(file,"\n");
 332 }
 333
 334 int lp_config_sync(LpConfig *lpconfig){
 335         FILE *file;
 336         if (lpconfig->filename==NULL) return -1;
 337         if (lpconfig->readonly) return 0;
 338 #ifndef WIN32
 339         /* don't create group/world-accessible files */
 340         (void) umask(S_IRWXG | S_IRWXO);
 341 #endif
 342         file=fopen(lpconfig->filename,"w");
 343         if (file==NULL){
 344                 ms_warning("Could not write %s ! Maybe it is read-only. Configuration will not be saved.",lpconfig->filename);
 345                 lpconfig->readonly=1;
 346                 return -1;
 347         }
 348         ms_list_for_each2(lpconfig->sections,(void (*)(void *,void*))lp_section_write,(void *)file);
 349         fclose(file);
 350         lpconfig->modified=0;
 351         return 0;
 352 }
 353
 354 int lp_config_has_section(LpConfig *lpconfig, const char *section){
 355         if (lp_config_find_section(lpconfig,section)!=NULL) return 1;
 356         return 0;
 357 }
 358
 359 void lp_config_clean_section(LpConfig *lpconfig, const char *section){
 360         LpSection *sec=lp_config_find_section(lpconfig,section);
 361         if (sec!=NULL){
 362                 lp_config_remove_section(lpconfig,sec);
 363         }
 364         lpconfig->modified++;
 365 }
 366
 367 int lp_config_needs_commit(const LpConfig *lpconfig){
 368         return lpconfig->modified>0;
 369 }