sjero.net Git - linphone/blob - linphone/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 1024
  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];
 142         LpSection *cur=NULL;
 143
 144         if (file==NULL) return;
 145
 146         while(fgets(tmp,MAX_LEN,file)!=NULL){
 147                 char *pos1,*pos2;
 148                 pos1=strchr(tmp,'[');
 149                 if (pos1!=NULL && is_first_char(tmp,pos1) ){
 150                         pos2=strchr(pos1,']');
 151                         if (pos2!=NULL){
 152                                 int nbs;
 153                                 char secname[MAX_LEN];
 154                                 secname[0]='\0';
 155                                 /* found section */
 156                                 *pos2='\0';
 157                                 nbs = sscanf(pos1+1,"%s",secname);
 158                                 if (nbs == 1 ){
 159                                         if (strlen(secname)>0){
 160                                                 cur=lp_config_find_section (lpconfig,secname);
 161                                                 if (cur==NULL){
 162                                                         cur=lp_section_new(secname);
 163                                                         lp_config_add_section(lpconfig,cur);
 164                                                 }
 165                                         }
 166                                 }else{
 167                                         ms_warning("parse error!");
 168                                 }
 169                         }
 170                 }else {
 171                         pos1=strchr(tmp,'=');
 172                         if (pos1!=NULL){
 173                                 char key[MAX_LEN];
 174                                 key[0]='\0';
 175
 176                                 *pos1='\0';
 177                                 if (sscanf(tmp,"%s",key)>0){
 178
 179                                         pos1++;
 180                                         pos2=strchr(pos1,'\n');
 181                                         if (pos2==NULL) pos2=pos1+strlen(pos1);
 182                                         else {
 183                                                 *pos2='\0'; /*replace the '\n' */
 184                                                 pos2--;
 185                                         }
 186                                         /* remove ending white spaces */
 187                                         for (; pos2>pos1 && *pos2==' ';pos2--) *pos2='\0';
 188                                         if (pos2-pos1>=0){
 189                                                 /* found a pair key,value */
 190                                                 if (cur!=NULL){
 191                                                         LpItem *item=lp_section_find_item(cur,key);
 192                                                         if (item==NULL){
 193                                                                 lp_section_add_item(cur,lp_item_new(key,pos1));
 194                                                         }else{
 195                                                                 ms_free(item->value);
 196                                                                 item->value=strdup(pos1);
 197                                                         }
 198                                                         /*printf("Found %s %s=%s\n",cur->name,key,pos1);*/
 199                                                 }else{
 200                                                         ms_warning("found key,item but no sections");
 201                                                 }
 202                                         }
 203                                 }
 204                         }
 205                 }
 206         }
 207 }
 208
 209 LpConfig * lp_config_new(const char *filename){
 210         LpConfig *lpconfig=lp_new0(LpConfig,1);
 211         if (filename!=NULL){
 212                 lpconfig->filename=ortp_strdup(filename);
 213                 lpconfig->file=fopen(filename,"rw");
 214                 if (lpconfig->file!=NULL){
 215                         lp_config_parse(lpconfig,lpconfig->file);
 216                         fclose(lpconfig->file);
 217 #if !defined(_WIN32_WCE)
 218                         /* make existing configuration files non-group/world-accessible */
 219                         if (chmod(filename, S_IRUSR | S_IWUSR) == -1)
 220                                 ms_warning("unable to correct permissions on "
 221                                           "configuration file: %s",
 222                                            strerror(errno));
 223 #endif /*_WIN32_WCE*/
 224                         lpconfig->file=NULL;
 225                         lpconfig->modified=0;
 226                 }
 227         }
 228         return lpconfig;
 229 }
 230
 231 int lp_config_read_file(LpConfig *lpconfig, const char *filename){
 232         FILE* f=fopen(filename,"r");
 233         if (f!=NULL){
 234                 lp_config_parse(lpconfig,f);
 235                 fclose(f);
 236                 return 0;
 237         }
 238         ms_warning("Fail to open file %s",filename);
 239         return -1;
 240 }
 241
 242 void lp_item_set_value(LpItem *item, const char *value){
 243         free(item->value);
 244         item->value=ortp_strdup(value);
 245 }
 246
 247
 248 void lp_config_destroy(LpConfig *lpconfig){
 249         if (lpconfig->filename!=NULL) free(lpconfig->filename);
 250         ms_list_for_each(lpconfig->sections,(void (*)(void*))lp_section_destroy);
 251         ms_list_free(lpconfig->sections);
 252         free(lpconfig);
 253 }
 254
 255 void lp_section_remove_item(LpSection *sec, LpItem *item){
 256         sec->items=ms_list_remove(sec->items,(void *)item);
 257         lp_item_destroy(item);
 258 }
 259
 260 const char *lp_config_get_string(LpConfig *lpconfig, const char *section, const char *key, const char *default_string){
 261         LpSection *sec;
 262         LpItem *item;
 263         sec=lp_config_find_section(lpconfig,section);
 264         if (sec!=NULL){
 265                 item=lp_section_find_item(sec,key);
 266                 if (item!=NULL) return item->value;
 267         }
 268         return default_string;
 269 }
 270
 271 int lp_config_get_int(LpConfig *lpconfig,const char *section, const char *key, int default_value){
 272         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 273         if (str!=NULL) return atoi(str);
 274         else return default_value;
 275 }
 276
 277 float lp_config_get_float(LpConfig *lpconfig,const char *section, const char *key, float default_value){
 278         const char *str=lp_config_get_string(lpconfig,section,key,NULL);
 279         float ret=default_value;
 280         if (str==NULL) return default_value;
 281         sscanf(str,"%f",&ret);
 282         return ret;
 283 }
 284
 285 void lp_config_set_string(LpConfig *lpconfig,const char *section, const char *key, const char *value){
 286         LpItem *item;
 287         LpSection *sec=lp_config_find_section(lpconfig,section);
 288         if (sec!=NULL){
 289                 item=lp_section_find_item(sec,key);
 290                 if (item!=NULL){
 291                         if (value!=NULL)
 292                                 lp_item_set_value(item,value);
 293                         else lp_section_remove_item(sec,item);
 294                 }else{
 295                         if (value!=NULL)
 296                                 lp_section_add_item(sec,lp_item_new(key,value));
 297                 }
 298         }else if (value!=NULL){
 299                 sec=lp_section_new(section);
 300                 lp_config_add_section(lpconfig,sec);
 301                 lp_section_add_item(sec,lp_item_new(key,value));
 302         }
 303         lpconfig->modified++;
 304 }
 305
 306 void lp_config_set_int(LpConfig *lpconfig,const char *section, const char *key, int value){
 307         char tmp[30];
 308         snprintf(tmp,30,"%i",value);
 309         lp_config_set_string(lpconfig,section,key,tmp);
 310         lpconfig->modified++;
 311 }
 312
 313 void lp_item_write(LpItem *item, FILE *file){
 314         fprintf(file,"%s=%s\n",item->key,item->value);
 315 }
 316
 317 void lp_section_write(LpSection *sec, FILE *file){
 318         fprintf(file,"[%s]\n",sec->name);
 319         ms_list_for_each2(sec->items,(void (*)(void*, void*))lp_item_write,(void *)file);
 320         fprintf(file,"\n");
 321 }
 322
 323 int lp_config_sync(LpConfig *lpconfig){
 324         FILE *file;
 325         if (lpconfig->filename==NULL) return -1;
 326         if (lpconfig->readonly) return 0;
 327 #ifndef WIN32
 328         /* don't create group/world-accessible files */
 329         (void) umask(S_IRWXG | S_IRWXO);
 330 #endif
 331         file=fopen(lpconfig->filename,"w");
 332         if (file==NULL){
 333                 ms_warning("Could not write %s ! Maybe it is read-only. Configuration will not be saved.",lpconfig->filename);
 334                 lpconfig->readonly=1;
 335                 return -1;
 336         }
 337         ms_list_for_each2(lpconfig->sections,(void (*)(void *,void*))lp_section_write,(void *)file);
 338         fclose(file);
 339         lpconfig->modified=0;
 340         return 0;
 341 }
 342
 343 int lp_config_has_section(LpConfig *lpconfig, const char *section){
 344         if (lp_config_find_section(lpconfig,section)!=NULL) return 1;
 345         return 0;
 346 }
 347
 348 void lp_config_clean_section(LpConfig *lpconfig, const char *section){
 349         LpSection *sec=lp_config_find_section(lpconfig,section);
 350         if (sec!=NULL){
 351                 lp_config_remove_section(lpconfig,sec);
 352         }
 353         lpconfig->modified++;
 354 }
 355
 356 int lp_config_needs_commit(const LpConfig *lpconfig){
 357         return lpconfig->modified>0;
 358 }