apps/silcd/serverconfig.h

   1 /*
   2
   3   serverconfig.h
   4
   5   Author: Pekka Riikonen <priikone@poseidon.pspt.fi>
   6
   7   Copyright (C) 1997 - 2000 Pekka Riikonen
   8
   9   This program is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU General Public License as published by
  11   the Free Software Foundation; either version 2 of the License, or
  12   (at your option) any later version.
  13
  14   This program is distributed in the hope that it will be useful,
  15   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17   GNU General Public License for more details.
  18
  19 */
  20
  21 #ifndef SERVERCONFIG_H
  22 #define SERVERCONFIG_H
  23
  24 /* Holds information of configured algorithms */
  25 typedef struct SilcServerConfigSectionAlgStruct {
  26   char *alg_name;
  27   char *sim_name;
  28   uint32 block_len;
  29   uint32 key_len;
  30   struct SilcServerConfigSectionAlgStruct *next;
  31   struct SilcServerConfigSectionAlgStruct *prev;
  32 #define SILC_CONFIG_SERVER_MODNAME "builtin"
  33 } SilcServerConfigSectionAlg;
  34
  35 /* Holds server keys from config file */
  36 typedef struct {
  37   SilcPublicKey public_key;
  38   SilcPrivateKey private_key;
  39 } SilcServerConfigSectionServerKeys;
  40
  41 /* Holds server information from config file */
  42 typedef struct {
  43   char *server_name;
  44   char *server_ip;
  45   char *location;
  46   uint16 port;
  47 } SilcServerConfigSectionServerInfo;
  48
  49 /* Holds server's administrative information from config file */
  50 typedef struct {
  51   char *location;
  52   char *server_type;
  53   char *admin_name;
  54   char *admin_email;
  55 } SilcServerConfigSectionAdminInfo;
  56
  57 /* Holds all the ports the server is listenning on */
  58 typedef struct SilcServerConfigSectionListenPortStruct {
  59   char *local_ip;
  60   char *listener_ip;
  61   uint16 port;
  62   struct SilcServerConfigSectionListenPortStruct *next;
  63   struct SilcServerConfigSectionListenPortStruct *prev;
  64 } SilcServerConfigSectionListenPort;
  65
  66 /* Holds server's execution identity, or the user and group which
  67    to change from root when server starts */
  68 typedef struct {
  69   char *user;
  70   char *group;
  71 } SilcServerConfigSectionIdentity;
  72
  73 /* Holds all the configured log files. */
  74 typedef struct SilcServerConfigSectionLoggingStruct {
  75   char *logtype;
  76   char *filename;
  77   uint32 maxsize;
  78   struct SilcServerConfigSectionLoggingStruct *next;
  79   struct SilcServerConfigSectionLoggingStruct *prev;
  80
  81 /* Allowed <Logging> section types */
  82 #define SILC_CONFIG_SERVER_LF_INFO "infologfile"
  83 #define SILC_CONFIG_SERVER_LF_WARNING "warninglogfile"
  84 #define SILC_CONFIG_SERVER_LF_ERROR "errorlogfile"
  85 #define SILC_CONFIG_SERVER_LF_FATAL "fatallogfile"
  86 } SilcServerConfigSectionLogging;
  87
  88 /* Holds all configured connection classes */
  89 typedef struct SilcServerConfigSectionConnectionClassStruct {
  90   uint32 class;
  91   uint32 ping_freq;
  92   uint32 connect_freq;
  93   uint32 max_links;
  94   struct SilcServerConfigSectionConnectionClassStruct *next;
  95   struct SilcServerConfigSectionConnectionClassStruct *prev;
  96 } SilcServerConfigSectionConnectionClass;
  97
  98 #define SILC_CONFIG_SERVER_AUTH_METH_PASSWD "passwd"
  99 #define SILC_CONFIG_SERVER_AUTH_METH_PUBKEY "pubkey"
 100
 101 /* Holds all client authentication data from config file */
 102 typedef struct SilcServerConfigSectionClientConnectionStruct {
 103   char *host;
 104   SilcAuthMethod auth_meth;
 105   void *auth_data;
 106   uint32 auth_data_len;
 107   uint16 port;
 108   uint32 class;
 109   struct SilcServerConfigSectionClientConnectionStruct *next;
 110   struct SilcServerConfigSectionClientConnectionStruct *prev;
 111 } SilcServerConfigSectionClientConnection;
 112
 113 /* Hols all server's administrators authentication data from config file */
 114 typedef struct SilcServerConfigSectionAdminConnectionStruct {
 115   char *host;
 116   char *username;
 117   char *nickname;
 118   SilcAuthMethod auth_meth;
 119   void *auth_data;
 120   uint32 auth_data_len;
 121   struct SilcServerConfigSectionAdminConnectionStruct *next;
 122   struct SilcServerConfigSectionAdminConnectionStruct *prev;
 123 } SilcServerConfigSectionAdminConnection;
 124
 125 /* Holds all configured server/router connections from config file */
 126 typedef struct SilcServerConfigSectionServerConnectionStruct {
 127   char *host;
 128   SilcAuthMethod auth_meth;
 129   void *auth_data;
 130   uint32 auth_data_len;
 131   uint16 port;
 132   char *version;
 133   uint32 class;
 134   bool initiator;
 135   bool backup_router;
 136   bool backup_local;
 137   struct SilcServerConfigSectionServerConnectionStruct *next;
 138   struct SilcServerConfigSectionServerConnectionStruct *prev;
 139 } SilcServerConfigSectionServerConnection;
 140
 141 /* Holds all configured denied connections from config file */
 142 typedef struct SilcServerConfigSectionDenyConnectionStruct {
 143   char *host;
 144   char *comment;
 145   uint16 port;
 146   struct SilcServerConfigSectionDenyConnectionStruct *next;
 147   struct SilcServerConfigSectionDenyConnectionStruct *prev;
 148 } SilcServerConfigSectionDenyConnection;
 149
 150 /* Holds motd file */
 151 typedef struct {
 152   char *motd_file;
 153 } SilcServerConfigSectionMotd;
 154
 155 /*
 156    SILC Server Config object.
 157
 158    This object holds all the data parsed from the SILC server configuration
 159    file. This is mainly used at the initialization of the server.
 160
 161 */
 162 typedef struct {
 163   /* Pointer back to the server */
 164   void *server;
 165
 166   /* Filename of the configuration file */
 167   char *filename;
 168
 169   /* Configuration sections */
 170   SilcServerConfigSectionAlg *cipher;
 171   SilcServerConfigSectionAlg *pkcs;
 172   SilcServerConfigSectionAlg *hash_func;
 173   SilcServerConfigSectionAlg *hmac;
 174   SilcServerConfigSectionServerKeys *server_keys;
 175   SilcServerConfigSectionServerInfo *server_info;
 176   SilcServerConfigSectionAdminInfo *admin_info;
 177   SilcServerConfigSectionListenPort *listen_port;
 178   SilcServerConfigSectionIdentity *identity;
 179   SilcServerConfigSectionLogging *logging;
 180   SilcServerConfigSectionConnectionClass *conn_class;
 181   SilcServerConfigSectionClientConnection *clients;
 182   SilcServerConfigSectionServerConnection *servers;
 183   SilcServerConfigSectionServerConnection *routers;
 184   SilcServerConfigSectionAdminConnection *admins;
 185   SilcServerConfigSectionDenyConnection *denied;
 186   SilcServerConfigSectionMotd *motd;
 187 } SilcServerConfigObject;
 188
 189 typedef SilcServerConfigObject *SilcServerConfig;
 190
 191 /* Configuration section type enumerations. */
 192 typedef enum {
 193   SILC_CONFIG_SERVER_SECTION_TYPE_NONE = 0,
 194   SILC_CONFIG_SERVER_SECTION_TYPE_CIPHER,
 195   SILC_CONFIG_SERVER_SECTION_TYPE_PKCS,
 196   SILC_CONFIG_SERVER_SECTION_TYPE_HASH_FUNCTION,
 197   SILC_CONFIG_SERVER_SECTION_TYPE_HMAC,
 198   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_KEYS,
 199   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_INFO,
 200   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_INFO,
 201   SILC_CONFIG_SERVER_SECTION_TYPE_LISTEN_PORT,
 202   SILC_CONFIG_SERVER_SECTION_TYPE_IDENTITY,
 203   SILC_CONFIG_SERVER_SECTION_TYPE_LOGGING,
 204   SILC_CONFIG_SERVER_SECTION_TYPE_CONNECTION_CLASS,
 205   SILC_CONFIG_SERVER_SECTION_TYPE_CLIENT_CONNECTION,
 206   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_CONNECTION,
 207   SILC_CONFIG_SERVER_SECTION_TYPE_ROUTER_CONNECTION,
 208   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_CONNECTION,
 209   SILC_CONFIG_SERVER_SECTION_TYPE_DENY_CONNECTION,
 210   SILC_CONFIG_SERVER_SECTION_TYPE_MOTD,
 211 } SilcServerConfigSectionType;
 212
 213 /* SILC Configuration Section structure. */
 214 typedef struct {
 215   const char *section;
 216   SilcServerConfigSectionType type;
 217   int maxfields;
 218 } SilcServerConfigSection;
 219
 220 /* LIst of all possible config sections in SILC server. */
 221 extern SilcServerConfigSection silc_server_config_sections[];
 222
 223 /* Structure used in parsing the configuration lines. The line is read
 224    from a file to this structure before parsing it further. */
 225 typedef struct SilcServerConfigParseStruct {
 226   SilcBuffer line;
 227   int linenum;
 228   SilcServerConfigSection *section;
 229   struct SilcServerConfigParseStruct *next;
 230   struct SilcServerConfigParseStruct *prev;
 231 } *SilcServerConfigParse;
 232
 233 /* Macros */
 234
 235 /* Allocates list entries for configuration sections. Used by all
 236    config sections as this is common. */
 237 #define SILC_SERVER_CONFIG_LIST_ALLOC(x)                \
 238 do {                                                    \
 239   if (!(x)) {                                           \
 240     (x) = silc_calloc(1, sizeof(*(x)));                 \
 241     (x)->next = NULL;                                   \
 242     (x)->prev = NULL;                                   \
 243   } else {                                              \
 244     if (!(x)->next) {                                   \
 245       (x)->next = silc_calloc(1, sizeof(*(x)->next));   \
 246       (x)->next->next = NULL;                           \
 247       (x)->next->prev = (x);                            \
 248       (x) = (x)->next;                                  \
 249     }                                                   \
 250   }                                                     \
 251 } while(0)
 252
 253 /* Prototypes */
 254 SilcServerConfig silc_server_config_alloc(char *filename);
 255 void silc_server_config_free(SilcServerConfig config);
 256 int silc_server_config_parse(SilcServerConfig config, SilcBuffer buffer,
 257                              SilcServerConfigParse *return_config);
 258 int silc_server_config_parse_lines(SilcServerConfig config,
 259                                    SilcServerConfigParse parse_config);
 260 int silc_server_config_check_sections(uint32 checkmask);
 261 void silc_server_config_setlogfiles(SilcServerConfig config);
 262 bool silc_server_config_register_ciphers(SilcServerConfig config);
 263 bool silc_server_config_register_pkcs(SilcServerConfig config);
 264 bool silc_server_config_register_hashfuncs(SilcServerConfig config);
 265 bool silc_server_config_register_hmacs(SilcServerConfig config);
 266 SilcServerConfigSectionClientConnection *
 267 silc_server_config_find_client_conn(SilcServerConfig config,
 268                                     char *host, int port);
 269 SilcServerConfigSectionServerConnection *
 270 silc_server_config_find_server_conn(SilcServerConfig config,
 271                                     char *host, int port);
 272 SilcServerConfigSectionServerConnection *
 273 silc_server_config_find_router_conn(SilcServerConfig config,
 274                                     char *host, int port);
 275 bool silc_server_config_is_primary_route(SilcServerConfig config);
 276 SilcServerConfigSectionServerConnection *
 277 silc_server_config_get_primary_router(SilcServerConfig config);
 278 SilcServerConfigSectionAdminConnection *
 279 silc_server_config_find_admin(SilcServerConfig config,
 280                               char *host, char *username, char *nickname);
 281 SilcServerConfigSectionDenyConnection *
 282 silc_server_config_denied_conn(SilcServerConfig config, char *host,
 283                                int port);
 284
 285 #endif