onak-conf.c

   1 /*
   2  * onak-conf.c - Routines related to runtime config.
   3  *
   4  * Copyright 2002,2012 Jonathan McDowell <noodles@earth.li>
   5  *
   6  * This program is free software: you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program; if not, write to the Free Software Foundation, Inc., 51
  17  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <ctype.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "ll.h"
  28 #include "log.h"
  29 #include "onak-conf.h"
  30
  31 extern struct onak_dbctx *DBINIT(bool readonly);
  32
  33 /*
  34  *      config - Runtime configuration for onak.
  35  *
  36  *      This is the default config; normally overridden with values from the
  37  *      config file.
  38  */
  39 struct onak_config config = {
  40         128,                    /* maxkeys */
  41         NULL,                   /* thissite */
  42         NULL,                   /* adminemail */
  43         NULL,                   /* mta */
  44         NULL,                   /* syncsites */
  45         NULL,                   /* logfile */
  46
  47         false,                  /* use_keyd */
  48         ".",                    /* sock_dir */
  49
  50         /*
  51          * Options for directory backends.
  52          */
  53         NULL,                   /* db_dir */
  54
  55         /*
  56          * Options for the Postgres backend.
  57          */
  58         NULL,                   /* pg_dbhost */
  59         NULL,                   /* pg_dbname */
  60         NULL,                   /* pg_dbuser */
  61         NULL,                   /* pg_dbpass */
  62
  63         /*
  64          * Options for dynamic backends.
  65          */
  66         NULL,                   /* db_backend */
  67         NULL,                   /* backends_dir */
  68
  69         DBINIT,                 /* Default db initialisation function */
  70
  71         true,                   /* Check packet sig hashes */
  72 };
  73
  74 bool parsebool(char *str, bool fallback)
  75 {
  76         if (!strcasecmp(str, "false") || !strcasecmp(str, "no") ||
  77                         !strcasecmp(str, "0")) {
  78                 return false;
  79         } else if (!strcasecmp(str, "true") || !strcasecmp(str, "yes") ||
  80                         !strcasecmp(str, "1")) {
  81                 return true;
  82         } else {
  83                 logthing(LOGTHING_CRITICAL,
  84                         "Couldn't parse %s as a boolean config variable, "
  85                         "returning fallback of '%s'.",
  86                         str,
  87                         fallback ? "true" : "false");
  88                 return fallback;
  89         }
  90 }
  91
  92 void readconfig(const char *configfile) {
  93         FILE *conffile;
  94         char  curline[1024];
  95         int   i;
  96         char *dir, *conf;
  97         size_t len;
  98
  99         curline[1023] = 0;
 100         if (configfile == NULL) {
 101                 conffile = NULL;
 102                 if ((dir = getenv("XDG_CONFIG_HOME")) != NULL) {
 103                         len = strlen(dir) + 1 + 9 + 1; /* dir + / + onak.conf + NUL */
 104                         conf = malloc(len);
 105                         snprintf(conf, len, "%s/onak.conf", dir);
 106                         conffile = fopen(conf, "r");
 107                         free(conf);
 108                 } else if ((dir = getenv("HOME")) != NULL) {
 109                         len = strlen(dir) + 18 + 1; /* dir + /.config/onak.conf + NUL */
 110                         conf = malloc(len);
 111                         snprintf(conf, len, "%s/.config/onak.conf", dir);
 112                         conffile = fopen(conf, "r");
 113                         free(conf);
 114                 }
 115                 if (conffile == NULL) {
 116                         conffile = fopen(CONFIGFILE, "r");
 117                 }
 118         } else {
 119                 conffile = fopen(configfile, "r");
 120         }
 121         if (conffile != NULL) {
 122                 if (!fgets(curline, 1023, conffile)) {
 123                         logthing(LOGTHING_CRITICAL,
 124                                 "Problem reading configuration file.");
 125                         fclose(conffile);
 126                         return;
 127                 }
 128
 129                 while (!feof(conffile)) {
 130                         for (i = strlen(curline) - 1;
 131                                         i >= 0 && isspace(curline[i]);
 132                                         i--) {
 133                                 curline[i] = 0;
 134                         }
 135
 136                 if (curline[0] == '#' || curline[0] == 0) {
 137                         /*
 138                          * Comment line, ignore.
 139                          */
 140                 } else if (!strncmp("db_dir ", curline, 7)) {
 141                         config.db_dir = strdup(&curline[7]);
 142                 } else if (!strncmp("debug ", curline, 6)) {
 143                         /*
 144                          * Not supported yet; ignore for compatibility with
 145                          * pksd.
 146                          */
 147                 } else if (!strncmp("default_language ", curline, 17)) {
 148                         /*
 149                          * Not supported yet; ignore for compatibility with
 150                          * pksd.
 151                          */
 152                 } else if (!strncmp("mail_delivery_client ", curline, 21)) {
 153                         config.mta = strdup(&curline[21]);
 154                 } else if (!strncmp("maintainer_email ", curline, 17)) {
 155                         config.adminemail = strdup(&curline[17]);
 156                 } else if (!strncmp("mail_intro_file ", curline, 16)) {
 157                         /*
 158                          * Not supported yet; ignore for compatibility with
 159                          * pksd.
 160                          */
 161                 } else if (!strncmp("help_dir ", curline, 9)) {
 162                         /*
 163                          * Not supported yet; ignore for compatibility with
 164                          * pksd.
 165                          */
 166                 } else if (!strncmp("max_last ", curline, 9)) {
 167                         /*
 168                          * Not supported yet; ignore for compatibility with
 169                          * pksd.
 170                          */
 171                 } else if (!strncmp("max_reply_keys ", curline, 15)) {
 172                         config.maxkeys = atoi(&curline[15]);
 173                 } else if (!strncmp("pg_dbhost ", curline, 10)) {
 174                         config.pg_dbhost = strdup(&curline[10]);
 175                 } else if (!strncmp("pg_dbname ", curline, 10)) {
 176                         config.pg_dbname = strdup(&curline[10]);
 177                 } else if (!strncmp("pg_dbuser ", curline, 10)) {
 178                         config.pg_dbuser = strdup(&curline[10]);
 179                 } else if (!strncmp("pg_dbpass ", curline, 10)) {
 180                         config.pg_dbpass = strdup(&curline[10]);
 181                 } else if (!strncmp("syncsite ", curline, 9)) {
 182                         config.syncsites =
 183                                 lladd(config.syncsites, strdup(&curline[9]));
 184                 } else if (!strncmp("logfile ", curline, 8)) {
 185                         config.logfile = strdup(&curline[8]);
 186                 } else if (!strncmp("loglevel ", curline, 9)) {
 187                         setlogthreshold(atoi(&curline[9]));
 188                 } else if (!strncmp("this_site ", curline, 10)) {
 189                         config.thissite = strdup(&curline[10]);
 190                 } else if (!strncmp("socket_name ", curline, 12) ||
 191                                 !strncmp("pks_bin_dir ", curline, 12) ||
 192                                 !strncmp("mail_dir ", curline, 9) ||
 193                                 !strncmp("www_port ", curline, 9)) {
 194                         /*
 195                          * Not applicable; ignored for compatibility with pksd.
 196                          */
 197                 } else if (!strncmp("db_backend ", curline, 11)) {
 198                         config.db_backend = strdup(&curline[11]);
 199                 } else if (!strncmp("backends_dir ", curline, 13)) {
 200                         config.backends_dir = strdup(&curline[13]);
 201                 } else if (!strncmp("use_keyd ", curline, 9)) {
 202                         config.use_keyd = parsebool(&curline[9],
 203                                                 config.use_keyd);
 204                 } else if (!strncmp("sock_dir ", curline, 9)) {
 205                         config.sock_dir = strdup(&curline[9]);
 206                 } else if (!strncmp("check_sighash ", curline, 9)) {
 207                         config.check_sighash = parsebool(&curline[9],
 208                                                 config.check_sighash);
 209                 } else {
 210                         logthing(LOGTHING_ERROR,
 211                                 "Unknown config line: %s", curline);
 212                 }
 213
 214                         if (!fgets(curline, 1023, conffile) &&
 215                                         !feof(conffile)) {
 216                                 logthing(LOGTHING_CRITICAL,
 217                                         "Problem reading configuration file.");
 218                                 break;
 219                         }
 220                 }
 221                 fclose(conffile);
 222         } else {
 223                 logthing(LOGTHING_NOTICE,
 224                                 "Couldn't open config file; using defaults.");
 225         }
 226 }
 227
 228 void cleanupconfig(void) {
 229         if (config.thissite != NULL) {
 230                 free(config.thissite);
 231                 config.thissite = NULL;
 232         }
 233         if (config.adminemail != NULL) {
 234                 free(config.adminemail);
 235                 config.adminemail = NULL;
 236         }
 237         if (config.mta != NULL) {
 238                 free(config.mta);
 239                 config.mta = NULL;
 240         }
 241         if (config.db_dir != NULL) {
 242                 free(config.db_dir);
 243                 config.db_dir = NULL;
 244         }
 245         if (config.pg_dbhost != NULL) {
 246                 free(config.pg_dbhost);
 247                 config.pg_dbhost = NULL;
 248         }
 249         if (config.pg_dbname != NULL) {
 250                 free(config.pg_dbname);
 251                 config.pg_dbname = NULL;
 252         }
 253         if (config.pg_dbuser != NULL) {
 254                 free(config.pg_dbuser);
 255                 config.pg_dbuser = NULL;
 256         }
 257         if (config.pg_dbpass != NULL) {
 258                 free(config.pg_dbpass);
 259                 config.pg_dbpass = NULL;
 260         }
 261         if (config.syncsites != NULL) {
 262                 llfree(config.syncsites, free);
 263                 config.syncsites = NULL;
 264         }
 265         if (config.logfile != NULL) {
 266                 free(config.logfile);
 267                 config.logfile = NULL;
 268         }
 269         if (config.db_backend != NULL) {
 270                 free(config.db_backend);
 271                 config.db_backend = NULL;
 272         }
 273         if (config.backends_dir != NULL) {
 274                 free(config.backends_dir);
 275                 config.backends_dir = NULL;
 276         }
 277 }