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(struct onak_db_config *dbcfg, 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         .maxkeys = 128,
  41         .thissite = NULL,
  42         .adminemail = NULL,
  43         .mta = NULL,
  44         .syncsites = NULL,
  45         .logfile = NULL,
  46
  47         .use_keyd = false,
  48         .sock_dir = ".",
  49
  50         .backends = NULL,
  51         .backends_dir = NULL,
  52
  53         .dbinit = DBINIT,
  54
  55         .check_sighash = true,
  56
  57         .bin_dir = NULL,
  58         .mail_dir = NULL,
  59 };
  60
  61 bool parsebool(char *str, bool fallback)
  62 {
  63         if (!strcasecmp(str, "false") || !strcasecmp(str, "no") ||
  64                         !strcasecmp(str, "0")) {
  65                 return false;
  66         } else if (!strcasecmp(str, "true") || !strcasecmp(str, "yes") ||
  67                         !strcasecmp(str, "1")) {
  68                 return true;
  69         } else {
  70                 logthing(LOGTHING_CRITICAL,
  71                         "Couldn't parse %s as a boolean config variable, "
  72                         "returning fallback of '%s'.",
  73                         str,
  74                         fallback ? "true" : "false");
  75                 return fallback;
  76         }
  77 }
  78
  79 void readconfig(const char *configfile) {
  80         FILE *conffile;
  81         char  curline[1024];
  82         int   i;
  83         char *dir, *conf;
  84         size_t len;
  85         struct onak_db_config *backend;
  86
  87         curline[1023] = 0;
  88         if (configfile == NULL) {
  89                 conffile = NULL;
  90                 if ((dir = getenv("XDG_CONFIG_HOME")) != NULL) {
  91                         len = strlen(dir) + 1 + 9 + 1; /* dir + / + onak.conf + NUL */
  92                         conf = malloc(len);
  93                         snprintf(conf, len, "%s/onak.conf", dir);
  94                         conffile = fopen(conf, "r");
  95                         free(conf);
  96                 } else if ((dir = getenv("HOME")) != NULL) {
  97                         len = strlen(dir) + 18 + 1; /* dir + /.config/onak.conf + NUL */
  98                         conf = malloc(len);
  99                         snprintf(conf, len, "%s/.config/onak.conf", dir);
 100                         conffile = fopen(conf, "r");
 101                         free(conf);
 102                 }
 103                 if (conffile == NULL) {
 104                         conffile = fopen(CONFIGFILE, "r");
 105                 }
 106         } else {
 107                 conffile = fopen(configfile, "r");
 108         }
 109         if (conffile != NULL) {
 110                 if (!fgets(curline, 1023, conffile)) {
 111                         logthing(LOGTHING_CRITICAL,
 112                                 "Problem reading configuration file.");
 113                         fclose(conffile);
 114                         return;
 115                 }
 116
 117                 /* Add a single DB configuration */
 118                 backend = calloc(1, sizeof(*backend));
 119                 config.backend = backend;
 120                 config.backends = lladd(NULL, backend);
 121
 122                 while (!feof(conffile)) {
 123                         for (i = strlen(curline) - 1;
 124                                         i >= 0 && isspace(curline[i]);
 125                                         i--) {
 126                                 curline[i] = 0;
 127                         }
 128
 129                 if (curline[0] == '#' || curline[0] == 0) {
 130                         /*
 131                          * Comment line, ignore.
 132                          */
 133                 } else if (!strncmp("db_dir ", curline, 7)) {
 134                         backend->location = strdup(&curline[7]);
 135                 } else if (!strncmp("debug ", curline, 6)) {
 136                         /*
 137                          * Not supported yet; ignore for compatibility with
 138                          * pksd.
 139                          */
 140                 } else if (!strncmp("default_language ", curline, 17)) {
 141                         /*
 142                          * Not supported yet; ignore for compatibility with
 143                          * pksd.
 144                          */
 145                 } else if (!strncmp("mail_delivery_client ", curline, 21)) {
 146                         config.mta = strdup(&curline[21]);
 147                 } else if (!strncmp("maintainer_email ", curline, 17)) {
 148                         config.adminemail = strdup(&curline[17]);
 149                 } else if (!strncmp("mail_intro_file ", curline, 16)) {
 150                         /*
 151                          * Not supported yet; ignore for compatibility with
 152                          * pksd.
 153                          */
 154                 } else if (!strncmp("help_dir ", curline, 9)) {
 155                         /*
 156                          * Not supported yet; ignore for compatibility with
 157                          * pksd.
 158                          */
 159                 } else if (!strncmp("max_last ", curline, 9)) {
 160                         /*
 161                          * Not supported yet; ignore for compatibility with
 162                          * pksd.
 163                          */
 164                 } else if (!strncmp("max_reply_keys ", curline, 15)) {
 165                         config.maxkeys = atoi(&curline[15]);
 166                 } else if (!strncmp("pg_dbhost ", curline, 10)) {
 167                         backend->hostname = strdup(&curline[10]);
 168                 } else if (!strncmp("pg_dbname ", curline, 10)) {
 169                         backend->location = strdup(&curline[10]);
 170                 } else if (!strncmp("pg_dbuser ", curline, 10)) {
 171                         backend->username = strdup(&curline[10]);
 172                 } else if (!strncmp("pg_dbpass ", curline, 10)) {
 173                         backend->password = strdup(&curline[10]);
 174                 } else if (!strncmp("syncsite ", curline, 9)) {
 175                         config.syncsites =
 176                                 lladd(config.syncsites, strdup(&curline[9]));
 177                 } else if (!strncmp("logfile ", curline, 8)) {
 178                         config.logfile = strdup(&curline[8]);
 179                 } else if (!strncmp("loglevel ", curline, 9)) {
 180                         setlogthreshold(atoi(&curline[9]));
 181                 } else if (!strncmp("this_site ", curline, 10)) {
 182                         config.thissite = strdup(&curline[10]);
 183                 } else if (!strncmp("socket_name ", curline, 12) ||
 184                                 !strncmp("pks_bin_dir ", curline, 12) ||
 185                                 !strncmp("mail_dir ", curline, 9) ||
 186                                 !strncmp("www_port ", curline, 9)) {
 187                         /*
 188                          * Not applicable; ignored for compatibility with pksd.
 189                          */
 190                 } else if (!strncmp("db_backend ", curline, 11)) {
 191                         backend->type = strdup(&curline[11]);
 192                         backend->name = strdup(&curline[11]);
 193                         config.db_backend = strdup(&curline[11]);
 194                 } else if (!strncmp("backends_dir ", curline, 13)) {
 195                         config.backends_dir = strdup(&curline[13]);
 196                 } else if (!strncmp("use_keyd ", curline, 9)) {
 197                         config.use_keyd = parsebool(&curline[9],
 198                                                 config.use_keyd);
 199                 } else if (!strncmp("sock_dir ", curline, 9)) {
 200                         config.sock_dir = strdup(&curline[9]);
 201                 } else if (!strncmp("check_sighash ", curline, 9)) {
 202                         config.check_sighash = parsebool(&curline[9],
 203                                                 config.check_sighash);
 204                 } else {
 205                         logthing(LOGTHING_ERROR,
 206                                 "Unknown config line: %s", curline);
 207                 }
 208
 209                         if (!fgets(curline, 1023, conffile) &&
 210                                         !feof(conffile)) {
 211                                 logthing(LOGTHING_CRITICAL,
 212                                         "Problem reading configuration file.");
 213                                 break;
 214                         }
 215                 }
 216                 fclose(conffile);
 217         } else {
 218                 logthing(LOGTHING_NOTICE,
 219                                 "Couldn't open config file; using defaults.");
 220         }
 221 }
 222
 223 void cleanupdbconfig(void *object)
 224 {
 225         struct onak_db_config *dbconfig = (struct onak_db_config *) object;
 226
 227         if (dbconfig->name != NULL) {
 228                 free(dbconfig->name);
 229                 dbconfig->name = NULL;
 230         }
 231         if (dbconfig->type != NULL) {
 232                 free(dbconfig->type);
 233                 dbconfig->type = NULL;
 234         }
 235         if (dbconfig->location != NULL) {
 236                 free(dbconfig->location);
 237                 dbconfig->location = NULL;
 238         }
 239         if (dbconfig->hostname != NULL) {
 240                 free(dbconfig->hostname);
 241                 dbconfig->hostname = NULL;
 242         }
 243         if (dbconfig->username != NULL) {
 244                 free(dbconfig->username);
 245                 dbconfig->username = NULL;
 246         }
 247         if (dbconfig->password != NULL) {
 248                 free(dbconfig->password);
 249                 dbconfig->password = NULL;
 250         }
 251 }
 252
 253 void cleanupconfig(void) {
 254         /* Free any defined DB backend configuration first */
 255         llfree(config.backends, cleanupdbconfig);
 256         config.backends = NULL;
 257
 258         if (config.thissite != NULL) {
 259                 free(config.thissite);
 260                 config.thissite = NULL;
 261         }
 262         if (config.adminemail != NULL) {
 263                 free(config.adminemail);
 264                 config.adminemail = NULL;
 265         }
 266         if (config.mta != NULL) {
 267                 free(config.mta);
 268                 config.mta = NULL;
 269         }
 270         if (config.syncsites != NULL) {
 271                 llfree(config.syncsites, free);
 272                 config.syncsites = NULL;
 273         }
 274         if (config.logfile != NULL) {
 275                 free(config.logfile);
 276                 config.logfile = NULL;
 277         }
 278         if (config.db_backend != NULL) {
 279                 free(config.db_backend);
 280                 config.db_backend = NULL;
 281         }
 282         if (config.backends_dir != NULL) {
 283                 free(config.backends_dir);
 284                 config.backends_dir = NULL;
 285         }
 286 }