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