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         0,                              /* enable gsm */
  39         1                               /* use polling of main loop */
  40 };
  41
  42 char options_error[256];
  43
  44 /* read options
  45  *
  46  * read options from options.conf
  47  */
  48 int read_options(char *options_error)
  49 {
  50         FILE *fp=NULL;
  51         char filename[128];
  52         char *p;
  53         char option[32];
  54         char param[256];
  55         unsigned int line,i;
  56         char buffer[256];
  57
  58         SPRINT(filename, "%s/options.conf", CONFIG_DATA);
  59
  60         if (!(fp=fopen(filename,"r"))) {
  61                 UPRINT(options_error, "Cannot open %s\n",filename);
  62                 return(0);
  63         }
  64
  65         line=0;
  66         while((fgets(buffer,sizeof(buffer),fp))) {
  67                 line++;
  68                 buffer[sizeof(buffer)-1]=0;
  69                 if (buffer[0]) buffer[strlen(buffer)-1]=0;
  70                 p=buffer;
  71
  72                 while(*p <= 32) { /* skip spaces */
  73                         if (*p == 0)
  74                                 break;
  75                         p++;
  76                 }
  77                 if (*p==0 || *p=='#') /* ignore comments and empty line */
  78                         continue;
  79
  80                 option[0]=0;
  81                 i=0; /* read option */
  82                 while(*p > 32) {
  83                         if (i+1 >= sizeof(option)) {
  84                                 UPRINT(options_error, "Error in %s (line %d): option too long.\n",filename,line);
  85                                 goto error;
  86                         }
  87                         option[i+1] = '\0';
  88                         option[i++] = *p++;
  89                 }
  90
  91                 while(*p <= 32) { /* skip spaces */
  92                         if (*p == 0)
  93                                 break;
  94                         p++;
  95                 }
  96
  97                 param[0]=0;
  98                 if (*p!=0 && *p!='#') { /* param */
  99                         i=0; /* read param */
 100                         while(*p > 31) {
 101                                 if (i+1 >= sizeof(param)) {
 102                                         UPRINT(options_error, "Error in %s (line %d): param too long.\n",filename,line);
 103                                         goto error;
 104                                 }
 105                                 param[i+1] = '\0';
 106                                 param[i++] = *p++;
 107                         }
 108                 }
 109
 110                 /* at this point we have option and param */
 111
 112                 /* check option */
 113                 if (!strcmp(option,"nt_if") || !strcmp(option,"te_if")) {
 114                         UPRINT(options_error, "Error in %s (line %d): obsolete option %s. Use multiple 'port' options to define ports to use.\n",filename,line,option);
 115                         goto error;
 116                 } else
 117                 if (!strcmp(option,"debug")) {
 118                         if (param[0]==0) {
 119                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 120                                 goto error;
 121                         }
 122                         options.deb = strtol(param, NULL, 0);
 123
 124                 } else
 125                 if (!strcmp(option,"log")) {
 126                         if (param[0]==0) {
 127                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line, option);
 128                                 goto error;
 129                         }
 130                         SCPY(options.log, param);
 131
 132                 } else
 133                 if (!strcmp(option,"alaw")) {
 134                         options.law = 'a';
 135
 136                 } else
 137                 if (!strcmp(option,"ulaw")) {
 138                         options.law = 'u';
 139
 140                 } else
 141                 if (!strcmp(option,"tones_dir")) {
 142                         if (param[0]==0) {
 143                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 144                                 goto error;
 145                         }
 146                         if (param[strlen(param)-1] == '/')
 147                                 param[strlen(param)-1]=0;
 148                         SCPY(options.tones_dir, param);
 149
 150                 } else
 151                 if (!strcmp(option,"fetch_tones")) {
 152                         if (param[0]==0) {
 153                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 154                                 goto error;
 155                         }
 156                         if (param[strlen(param)-1] == '/')
 157                                 param[strlen(param)-1]=0;
 158                         SCPY(options.fetch_tones, param);
 159
 160                 } else
 161                 if (!strcmp(option,"extensions_dir")) {
 162                         // obsolete
 163                 } else
 164                 if (!strcmp(option,"national")) {
 165                         SCPY(options.national, param);
 166
 167                 } else
 168                 if (!strcmp(option,"international")) {
 169                         SCPY(options.international, param);
 170
 171                 } else
 172                 if (!strcmp(option,"dummyid")) {
 173                         SCPY(options.dummyid, param);
 174
 175                 } else
 176                 if (!strcmp(option,"dsptones")) {
 177                         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);
 178                         goto error;
 179                 } else
 180                 if (!strcmp(option,"schedule")) {
 181                         options.schedule = atoi(param);
 182                         if (options.schedule < 0) {
 183                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s must be at least '0'.\n", filename,line,option);
 184                                 goto error;
 185                         }
 186                         if (options.schedule > 99) {
 187                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s must be '99' or less.\n", filename,line,option);
 188                                 goto error;
 189                         }
 190
 191                 } else
 192                 if (!strcmp(option,"email")) {
 193                         if (param[0]==0) {
 194                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n", filename,line,option);
 195                                 goto error;
 196                         }
 197                         SCPY(options.email, param);
 198
 199                 } else
 200                 if (!strcmp(option,"lock")) {
 201                         if (param[0]==0) {
 202                                 UPRINT(options_error, "Error in %s (line %d): parameter for option %s missing.\n",filename,line,option);
 203                                 goto error;
 204                         }
 205                         if (param[strlen(param)-1] == '/')
 206                                 param[strlen(param)-1]=0;
 207                         SCPY(options.lock, param);
 208
 209                 } else
 210                 if (!strcmp(option,"socketuser")) {
 211                         char * endptr = NULL;
 212                         options.socketuser = strtol(param, &endptr, 10);
 213                         if (*endptr != '\0') {
 214                                 struct passwd * pwd = getpwnam(param);
 215                                 if (pwd == NULL) {
 216                                         UPRINT(options_error, "Error in %s (line %d): no such user: %s.\n",filename,line,param);
 217                                         goto error;
 218                                 }
 219                                 options.socketuser = pwd->pw_uid;
 220                         }
 221                 } else
 222                 if (!strcmp(option,"socketgroup")) {
 223                         char * endptr = NULL;
 224                         options.socketgroup = strtol(param, &endptr, 10);
 225                         if (*endptr != '\0') {
 226                                 struct group * grp = getgrnam(param);
 227                                 if (grp == NULL) {
 228                                         UPRINT(options_error, "Error in %s (line %d): no such group: %s.\n",filename,line,param);
 229                                         goto error;
 230                                 }
 231                                 options.socketgroup = grp->gr_gid;
 232                         }
 233                 } else
 234                 if (!strcmp(option,"socketrights")) {
 235                         options.socketrights = strtol(param, NULL, 0);
 236                 } else
 237                 if (!strcmp(option,"gsm")) {
 238                         options.gsm = 1;
 239                 } else
 240                 if (!strcmp(option,"polling")) {
 241                         options.polling = 1;
 242                 } else {
 243                         UPRINT(options_error, "Error in %s (line %d): wrong option keyword %s.\n", filename,line,option);
 244                         goto error;
 245                 }
 246         }
 247
 248         if (!options.tones_dir[0]) {
 249                 UPRINT(options_error, "Error in %s (line %d): option 'tones_dir' with parameter missing.\n", filename,line);
 250                 goto error;
 251         }
 252         if (fp) fclose(fp);
 253         return(1);
 254 error:
 255         if (fp) fclose(fp);
 256         return(0);
 257 }
 258
 259