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
  49         /*
  50          * Options for directory backends.
  51          */
  52         NULL,                   /* db_dir */
  53
  54         /*
  55          * Options for the Postgres backend.
  56          */
  57         NULL,                   /* pg_dbhost */
  58         NULL,                   /* pg_dbname */
  59         NULL,                   /* pg_dbuser */
  60         NULL,                   /* pg_dbpass */
  61
  62         /*
  63          * Options for dynamic backends.
  64          */
  65         NULL,                   /* db_backend */
  66         NULL,                   /* backends_dir */
  67
  68         DBINIT,                 /* Default db initialisation function */
  69
  70         true,                   /* Check packet sig hashes */
  71 };
  72
  73 bool parsebool(char *str, bool fallback)
  74 {
  75         if (!strcasecmp(str, "false") || !strcasecmp(str, "no") ||
  76                         !strcasecmp(str, "0")) {
  77                 return false;
  78         } else if (!strcasecmp(str, "true") || !strcasecmp(str, "yes") ||
  79                         !strcasecmp(str, "1")) {
  80                 return true;
  81         } else {
  82                 logthing(LOGTHING_CRITICAL,
  83                         "Couldn't parse %s as a boolean config variable, "
  84                         "returning fallback of '%s'.",
  85                         str,
  86                         fallback ? "true" : "false");
  87                 return fallback;
  88         }
  89 }
  90
  91 void readconfig(const char *configfile) {
  92         FILE *conffile;
  93         char  curline[1024];
  94         int   i;
  95         char *dir, *conf;
  96         size_t len;
  97
  98         curline[1023] = 0;
  99         if (configfile == NULL) {
 100                 conffile = NULL;
 101                 if ((dir = getenv("XDG_CONFIG_HOME")) != NULL) {
 102                         len = strlen(dir) + 1 + 9 + 1; /* dir + / + onak.conf + NUL */
 103                         conf = malloc(len);
 104                         snprintf(conf, len, "%s/onak.conf", dir);
 105                         conffile = fopen(conf, "r");
 106                         free(conf);
 107                 } else if ((dir = getenv("HOME")) != NULL) {
 108                         len = strlen(dir) + 18 + 1; /* dir + /.config/onak.conf + NUL */
 109                         conf = malloc(len);
 110                         snprintf(conf, len, "%s/.config/onak.conf", dir);
 111                         conffile = fopen(conf, "r");
 112                         free(conf);
 113                 }
 114                 if (conffile == NULL) {
 115                         conffile = fopen(CONFIGFILE, "r");
 116                 }
 117         } else {
 118                 conffile = fopen(configfile, "r");
 119         }
 120         if (conffile != NULL) {
 121                 if (!fgets(curline, 1023, conffile)) {
 122                         logthing(LOGTHING_CRITICAL,
 123                                 "Problem reading configuration file.");
 124                         fclose(conffile);
 125                         return;
 126                 }
 127
 128                 while (!feof(conffile)) {
 129                         for (i = strlen(curline) - 1;
 130                                         i >= 0 && isspace(curline[i]);
 131                                         i--) {
 132                                 curline[i] = 0;
 133                         }
 134
 135                 if (curline[0] == '#' || curline[0] == 0) {
 136                         /*
 137                          * Comment line, ignore.
 138                          */
 139                 } else if (!strncmp("db_dir ", curline, 7)) {
 140                         config.db_dir = strdup(&curline[7]);
 141                 } else if (!strncmp("debug ", curline, 6)) {
 142                         /*
 143                          * Not supported yet; ignore for compatibility with
 144                          * pksd.
 145                          */
 146                 } else if (!strncmp("default_language ", curline, 17)) {
 147                         /*
 148                          * Not supported yet; ignore for compatibility with
 149                          * pksd.
 150                          */
 151                 } else if (!strncmp("mail_delivery_client ", curline, 21)) {
 152                         config.mta = strdup(&curline[21]);
 153                 } else if (!strncmp("maintainer_email ", curline, 17)) {
 154                         config.adminemail = strdup(&curline[17]);
 155                 } else if (!strncmp("mail_intro_file ", curline, 16)) {
 156                         /*
 157                          * Not supported yet; ignore for compatibility with
 158                          * pksd.
 159                          */
 160                 } else if (!strncmp("help_dir ", curline, 9)) {
 161                         /*
 162                          * Not supported yet; ignore for compatibility with
 163                          * pksd.
 164                          */
 165                 } else if (!strncmp("max_last ", curline, 9)) {
 166                         /*
 167                          * Not supported yet; ignore for compatibility with
 168                          * pksd.
 169                          */
 170                 } else if (!strncmp("max_reply_keys ", curline, 15)) {
 171                         config.maxkeys = atoi(&curline[15]);
 172                 } else if (!strncmp("pg_dbhost ", curline, 10)) {
 173                         config.pg_dbhost = strdup(&curline[10]);
 174                 } else if (!strncmp("pg_dbname ", curline, 10)) {
 175                         config.pg_dbname = strdup(&curline[10]);
 176                 } else if (!strncmp("pg_dbuser ", curline, 10)) {
 177                         config.pg_dbuser = strdup(&curline[10]);
 178                 } else if (!strncmp("pg_dbpass ", curline, 10)) {
 179                         config.pg_dbpass = strdup(&curline[10]);
 180                 } else if (!strncmp("syncsite ", curline, 9)) {
 181                         config.syncsites =
 182                                 lladd(config.syncsites, strdup(&curline[9]));
 183                 } else if (!strncmp("logfile ", curline, 8)) {
 184                         config.logfile = strdup(&curline[8]);
 185                 } else if (!strncmp("loglevel ", curline, 9)) {
 186                         setlogthreshold(atoi(&curline[9]));
 187                 } else if (!strncmp("this_site ", curline, 10)) {
 188                         config.thissite = strdup(&curline[10]);
 189                 } else if (!strncmp("socket_name ", curline, 12) ||
 190                                 !strncmp("pks_bin_dir ", curline, 12) ||
 191                                 !strncmp("mail_dir ", curline, 9) ||
 192                                 !strncmp("www_port ", curline, 9)) {
 193                         /*
 194                          * Not applicable; ignored for compatibility with pksd.
 195                          */
 196                 } else if (!strncmp("db_backend ", curline, 11)) {
 197                         config.db_backend = strdup(&curline[11]);
 198                 } else if (!strncmp("backends_dir ", curline, 13)) {
 199                         config.backends_dir = strdup(&curline[13]);
 200                 } else if (!strncmp("use_keyd ", curline, 9)) {
 201                         config.use_keyd = parsebool(&curline[9],
 202                                                 config.use_keyd);
 203                 } else if (!strncmp("check_sighash ", curline, 9)) {
 204                         config.check_sighash = parsebool(&curline[9],
 205                                                 config.check_sighash);
 206                 } else {
 207                         logthing(LOGTHING_ERROR,
 208                                 "Unknown config line: %s", curline);
 209                 }
 210
 211                         if (!fgets(curline, 1023, conffile) &&
 212                                         !feof(conffile)) {
 213                                 logthing(LOGTHING_CRITICAL,
 214                                         "Problem reading configuration file.");
 215                                 break;
 216                         }
 217                 }
 218                 fclose(conffile);
 219         } else {
 220                 logthing(LOGTHING_NOTICE,
 221                                 "Couldn't open config file; using defaults.");
 222         }
 223 }
 224
 225 void cleanupconfig(void) {
 226         if (config.thissite != NULL) {
 227                 free(config.thissite);
 228                 config.thissite = NULL;
 229         }
 230         if (config.adminemail != NULL) {
 231                 free(config.adminemail);
 232                 config.adminemail = NULL;
 233         }
 234         if (config.mta != NULL) {
 235                 free(config.mta);
 236                 config.mta = NULL;
 237         }
 238         if (config.db_dir != NULL) {
 239                 free(config.db_dir);
 240                 config.db_dir = NULL;
 241         }
 242         if (config.pg_dbhost != NULL) {
 243                 free(config.pg_dbhost);
 244                 config.pg_dbhost = NULL;
 245         }
 246         if (config.pg_dbname != NULL) {
 247                 free(config.pg_dbname);
 248                 config.pg_dbname = NULL;
 249         }
 250         if (config.pg_dbuser != NULL) {
 251                 free(config.pg_dbuser);
 252                 config.pg_dbuser = NULL;
 253         }
 254         if (config.pg_dbpass != NULL) {
 255                 free(config.pg_dbpass);
 256                 config.pg_dbpass = NULL;
 257         }
 258         if (config.syncsites != NULL) {
 259                 llfree(config.syncsites, free);
 260                 config.syncsites = NULL;
 261         }
 262         if (config.logfile != NULL) {
 263                 free(config.logfile);
 264                 config.logfile = NULL;
 265         }
 266         if (config.db_backend != NULL) {
 267                 free(config.db_backend);
 268                 config.db_backend = NULL;
 269         }
 270         if (config.backends_dir != NULL) {
 271                 free(config.backends_dir);
 272                 config.backends_dir = NULL;
 273         }
 274 }