options.c

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** reading options.conf and filling structure                                **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <stdarg.h>
  15 #include <unistd.h>
  16 #include <stdlib.h>
  17 #include "macro.h"
  18 #include "extension.h"
  19 #include "options.h"
  20 #include <grp.h>
  21 #include <pwd.h>
  22
  23 struct options options = {
  24         "/usr/local/lcr/log",           /* log file */
  25         0x0000,                         /* debug mode */
  26         'a',                            /* a-law */
  27         "0",                            /* national prefix */
  28         "00",                           /* international prefix */
  29         "tones_american",               /* directory of tones */
  30         "",                             /* directories of tones to fetch */
  31         "",                             /* dummy caller id */
  32         0,                              /* by default use priority 0 */
  33         "lcr@your.machine",             /* source mail adress */
  34         "/var/tmp",                     /* path of lock files */
  35         0700,                           /* rights of lcr admin socket */
  36         -1,                             /* socket user (-1= no change) */
  37         -1,                             /* socket group (-1= no change) */
  38         1,                              /* use polling of main loop */
  39         "mISDN_l1loop.1",               /* GSM/Asterisk side */
  40         "mISDN_l1loop.2",               /* LCR side */
  41 };
  42
  43 char options_error[256];
  44
  45 /* read options
  46  *
  47  * read options from options.conf
  48  */
  49 int read_options(char *options_error)
  50 {
  51         FILE *fp=NULL;
  52         char filename[128];
  53         char *p;
  54         char option[32];
  55         char param[256];
  56         unsigned int line,i;
  57         char buffer[256];
  58
  59         SPRINT(filename, "%s/options.conf", CONFIG_DATA);
  60
  61         if (!(fp=fopen(filename,"r"))) {
  62                 UPRINT(options_error, "Cannot open %s\n",filename);
  63                 return(0);
  64         }
  65
  66         line=0;
  67         while((fgets(buffer,sizeof(buffer),fp))) {
  68                 line++;
  69                 buffer[sizeof(buffer)-1]=0;
  70                 if (buffer[0]) buffer[strlen(buffer)-1]=0;
  71                 p=buffer;
  72
  73                 while(*p <= 32) { /* skip spaces */
  74                         if (*p == 0)
  75                                 break;
  76                         p++;
  77                 }
  78                 if (*p==0 || *p=='#') /* ignore comments and empty line */
  79                         continue;
  80
  81                 option[0]=0;
  82                 i=0; /* read option */
  83                 while(*p > 32) {
  84                         if (i+1 >= sizeof(option)) {
  85                                 UPRINT(options_error, "Error in %s (line %d): option too long.\n",filename,line);
  86                                 goto error;
  87                         }
  88                         option[i+1] = '\0';
  89                         option[i++] = *p++;
  90                 }
  91
  92                 while(*p <= 32) { /* skip spaces */
  93                         if (*p == 0)
  94                                 break;
  95                         p++;
  96                 }
  97
  98                 param[0]=0;
  99                 if (*p!=0 && *p!='#') { /* param */
 100                         i=0; /* read param */
 101                         while(*p > 31) {
 102                                 if (i+1 >= sizeof(param)) {
 103                                         UPRINT(options_error, "Error in %s (line %d): param too long.\n",filename,line);
 104                                         goto error;
 105                                 }
 106                                 param[i+1] = '\0';
 107                                 param[i++] = *p++;
 108                         }
 109                 }
 110
 111                 /* at this point we have option and param */
 112
 113                 /* check option */
 114                 if (!strcmp(option,"nt_if") || !strcmp(option,"te_if")) {
 115                         UPRINT(options_error, "Error in %s (line %d): obsolete option %s. Use multiple 'port' options to define ports to use.\n",filename,line,option);
 116                         goto error;
 117                 } else
 118                 if (!strcmp(option,"debug")) {
 119                         if (param[0]==0) {
 120                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 121                                 goto error;
 122                         }
 123                         options.deb = strtol(param, NULL, 0);
 124
 125                 } else
 126                 if (!strcmp(option,"log")) {
 127                         if (param[0]==0) {
 128                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line, option);
 129                                 goto error;
 130                         }
 131                         SCPY(options.log, param);
 132
 133                 } else
 134                 if (!strcmp(option,"alaw")) {
 135                         options.law = 'a';
 136
 137                 } else
 138                 if (!strcmp(option,"ulaw")) {
 139                         options.law = 'u';
 140
 141                 } else
 142                 if (!strcmp(option,"tones_dir")) {
 143                         if (param[0]==0) {
 144                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 145                                 goto error;
 146                         }
 147                         if (param[strlen(param)-1] == '/')
 148                                 param[strlen(param)-1]=0;
 149                         SCPY(options.tones_dir, param);
 150
 151                 } else
 152                 if (!strcmp(option,"fetch_tones")) {
 153                         if (param[0]==0) {
 154                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 155                                 goto error;
 156                         }
 157                         if (param[strlen(param)-1] == '/')
 158                                 param[strlen(param)-1]=0;
 159                         SCPY(options.fetch_tones, param);
 160
 161                 } else
 162                 if (!strcmp(option,"extensions_dir")) {
 163                         // obsolete
 164                 } else
 165                 if (!strcmp(option,"national")) {
 166                         SCPY(options.national, param);
 167
 168                 } else
 169                 if (!strcmp(option,"international")) {
 170                         SCPY(options.international, param);
 171
 172                 } else
 173                 if (!strcmp(option,"dummyid")) {
 174                         SCPY(options.dummyid, param);
 175
 176                 } else
 177                 if (!strcmp(option,"dsptones")) {
 178                         UPRINT(options_error, "Error in %s (line %d): parameter 'dsptones' is obsolete. Just define the tones (american,german,oldgerman) at 'tones_dir' option.\n",filename,line);
 179                         goto error;
 180                 } else
 181                 if (!strcmp(option,"schedule")) {
 182                         options.schedule = atoi(param);
 183                         if (options.schedule < 0) {
 184                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s must be at least '0'.\n", filename,line,option);
 185                                 goto error;
 186                         }
 187                         if (options.schedule > 99) {
 188                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s must be '99' or less.\n", filename,line,option);
 189                                 goto error;
 190                         }
 191
 192                 } else
 193                 if (!strcmp(option,"email")) {
 194                         if (param[0]==0) {
 195                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n", filename,line,option);
 196                                 goto error;
 197                         }
 198                         SCPY(options.email, param);
 199
 200                 } else
 201                 if (!strcmp(option,"lock")) {
 202                         if (param[0]==0) {
 203                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 204                                 goto error;
 205                         }
 206                         if (param[strlen(param)-1] == '/')
 207                                 param[strlen(param)-1]=0;
 208                         SCPY(options.lock, param);
 209
 210                 } else
 211                 if (!strcmp(option,"socketuser")) {
 212                         char * endptr = NULL;
 213                         options.socketuser = strtol(param, &endptr, 10);
 214                         if (*endptr != '\0') {
 215                                 struct passwd * pwd = getpwnam(param);
 216                                 if (pwd == NULL) {
 217                                         UPRINT(options_error, "Error in %s (line %d): no such user: %s.\n",filename,line,param);
 218                                         goto error;
 219                                 }
 220                                 options.socketuser = pwd->pw_uid;
 221                         }
 222                 } else
 223                 if (!strcmp(option,"socketgroup")) {
 224                         char * endptr = NULL;
 225                         options.socketgroup = strtol(param, &endptr, 10);
 226                         if (*endptr != '\0') {
 227                                 struct group * grp = getgrnam(param);
 228                                 if (grp == NULL) {
 229                                         UPRINT(options_error, "Error in %s (line %d): no such group: %s.\n",filename,line,param);
 230                                         goto error;
 231                                 }
 232                                 options.socketgroup = grp->gr_gid;
 233                         }
 234                 } else
 235                 if (!strcmp(option,"socketrights")) {
 236                         options.socketrights = strtol(param, NULL, 0);
 237                 } else
 238                 if (!strcmp(option,"polling")) {
 239                         options.polling = 1;
 240                 } else
 241                 if (!strcmp(option,"loopback-ext")) {
 242                         if (param[0]==0) {
 243                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line, option);
 244                                 goto error;
 245                         }
 246                         SCPY(options.loopback_ext, param);
 247
 248                 } else
 249                 if (!strcmp(option,"loopback-lcr")) {
 250                         if (param[0]==0) {
 251                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line, option);
 252                                 goto error;
 253                         }
 254                         SCPY(options.loopback_lcr, param);
 255
 256                 } else {
 257                         UPRINT(options_error, "Error in %s (line %d): wrong option keyword %s.\n", filename,line,option);
 258                         goto error;
 259                 }
 260         }
 261
 262         if (!options.tones_dir[0]) {
 263                 UPRINT(options_error, "Error in %s (line %d): option 'tones_dir' with parameter missing.\n", filename,line);
 264                 goto error;
 265         }
 266         if (fp) fclose(fp);
 267         return(1);
 268 error:
 269         if (fp) fclose(fp);
 270         return(0);
 271 }
 272
 273