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("www_port ", curline, 9)) {
 185                         /*
 186                          * Not applicable; ignored for compatibility with pksd.
 187                          */
 188                 } else if (!strncmp("pks_bin_dir ", curline, 12)) {
 189                         config.bin_dir = strdup(&curline[12]);
 190                 } else if (!strncmp("mail_dir ", curline, 9)) {
 191                         config.mail_dir = strdup(&curline[9]);
 192                 } else if (!strncmp("db_backend ", curline, 11)) {
 193                         backend->type = strdup(&curline[11]);
 194                         backend->name = strdup(&curline[11]);
 195                         config.db_backend = strdup(&curline[11]);
 196                 } else if (!strncmp("backends_dir ", curline, 13)) {
 197                         config.backends_dir = strdup(&curline[13]);
 198                 } else if (!strncmp("use_keyd ", curline, 9)) {
 199                         config.use_keyd = parsebool(&curline[9],
 200                                                 config.use_keyd);
 201                 } else if (!strncmp("sock_dir ", curline, 9)) {
 202                         config.sock_dir = strdup(&curline[9]);
 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 cleanupdbconfig(void *object)
 226 {
 227         struct onak_db_config *dbconfig = (struct onak_db_config *) object;
 228
 229         if (dbconfig->name != NULL) {
 230                 free(dbconfig->name);
 231                 dbconfig->name = NULL;
 232         }
 233         if (dbconfig->type != NULL) {
 234                 free(dbconfig->type);
 235                 dbconfig->type = NULL;
 236         }
 237         if (dbconfig->location != NULL) {
 238                 free(dbconfig->location);
 239                 dbconfig->location = NULL;
 240         }
 241         if (dbconfig->hostname != NULL) {
 242                 free(dbconfig->hostname);
 243                 dbconfig->hostname = NULL;
 244         }
 245         if (dbconfig->username != NULL) {
 246                 free(dbconfig->username);
 247                 dbconfig->username = NULL;
 248         }
 249         if (dbconfig->password != NULL) {
 250                 free(dbconfig->password);
 251                 dbconfig->password = NULL;
 252         }
 253 }
 254
 255 void cleanupconfig(void) {
 256         /* Free any defined DB backend configuration first */
 257         llfree(config.backends, cleanupdbconfig);
 258         config.backends = NULL;
 259
 260         if (config.thissite != NULL) {
 261                 free(config.thissite);
 262                 config.thissite = NULL;
 263         }
 264         if (config.adminemail != NULL) {
 265                 free(config.adminemail);
 266                 config.adminemail = NULL;
 267         }
 268         if (config.mta != NULL) {
 269                 free(config.mta);
 270                 config.mta = NULL;
 271         }
 272         if (config.syncsites != NULL) {
 273                 llfree(config.syncsites, free);
 274                 config.syncsites = NULL;
 275         }
 276         if (config.logfile != NULL) {
 277                 free(config.logfile);
 278                 config.logfile = NULL;
 279         }
 280         if (config.db_backend != NULL) {
 281                 free(config.db_backend);
 282                 config.db_backend = NULL;
 283         }
 284         if (config.backends_dir != NULL) {
 285                 free(config.backends_dir);
 286                 config.backends_dir = NULL;
 287         }
 288         if (config.bin_dir != NULL) {
 289                 free(config.bin_dir);
 290                 config.bin_dir = NULL;
 291         }
 292         if (config.mail_dir != NULL) {
 293                 free(config.mail_dir);
 294                 config.mail_dir = NULL;
 295         }
 296 }