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   char *backup_replace_ip;
 137   uint16 backup_replace_port;
 138   bool backup_local;
 139   struct SilcServerConfigSectionServerConnectionStruct *next;
 140   struct SilcServerConfigSectionServerConnectionStruct *prev;
 141 } SilcServerConfigSectionServerConnection;
 142
 143 /* Holds all configured denied connections from config file */
 144 typedef struct SilcServerConfigSectionDenyConnectionStruct {
 145   char *host;
 146   char *comment;
 147   uint16 port;
 148   struct SilcServerConfigSectionDenyConnectionStruct *next;
 149   struct SilcServerConfigSectionDenyConnectionStruct *prev;
 150 } SilcServerConfigSectionDenyConnection;
 151
 152 /* Holds motd file */
 153 typedef struct {
 154   char *motd_file;
 155 } SilcServerConfigSectionMotd;
 156
 157 /*
 158    SILC Server Config object.
 159
 160    This object holds all the data parsed from the SILC server configuration
 161    file. This is mainly used at the initialization of the server.
 162
 163 */
 164 typedef struct {
 165   /* Pointer back to the server */
 166   void *server;
 167
 168   /* Filename of the configuration file */
 169   char *filename;
 170
 171   /* Configuration sections */
 172   SilcServerConfigSectionAlg *cipher;
 173   SilcServerConfigSectionAlg *pkcs;
 174   SilcServerConfigSectionAlg *hash_func;
 175   SilcServerConfigSectionAlg *hmac;
 176   SilcServerConfigSectionServerKeys *server_keys;
 177   SilcServerConfigSectionServerInfo *server_info;
 178   SilcServerConfigSectionAdminInfo *admin_info;
 179   SilcServerConfigSectionListenPort *listen_port;
 180   SilcServerConfigSectionIdentity *identity;
 181   SilcServerConfigSectionLogging *logging;
 182   SilcServerConfigSectionConnectionClass *conn_class;
 183   SilcServerConfigSectionClientConnection *clients;
 184   SilcServerConfigSectionServerConnection *servers;
 185   SilcServerConfigSectionServerConnection *routers;
 186   SilcServerConfigSectionAdminConnection *admins;
 187   SilcServerConfigSectionDenyConnection *denied;
 188   SilcServerConfigSectionMotd *motd;
 189 } SilcServerConfigObject;
 190
 191 typedef SilcServerConfigObject *SilcServerConfig;
 192
 193 /* Configuration section type enumerations. */
 194 typedef enum {
 195   SILC_CONFIG_SERVER_SECTION_TYPE_NONE = 0,
 196   SILC_CONFIG_SERVER_SECTION_TYPE_CIPHER,
 197   SILC_CONFIG_SERVER_SECTION_TYPE_PKCS,
 198   SILC_CONFIG_SERVER_SECTION_TYPE_HASH_FUNCTION,
 199   SILC_CONFIG_SERVER_SECTION_TYPE_HMAC,
 200   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_KEYS,
 201   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_INFO,
 202   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_INFO,
 203   SILC_CONFIG_SERVER_SECTION_TYPE_LISTEN_PORT,
 204   SILC_CONFIG_SERVER_SECTION_TYPE_IDENTITY,
 205   SILC_CONFIG_SERVER_SECTION_TYPE_LOGGING,
 206   SILC_CONFIG_SERVER_SECTION_TYPE_CONNECTION_CLASS,
 207   SILC_CONFIG_SERVER_SECTION_TYPE_CLIENT_CONNECTION,
 208   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_CONNECTION,
 209   SILC_CONFIG_SERVER_SECTION_TYPE_ROUTER_CONNECTION,
 210   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_CONNECTION,
 211   SILC_CONFIG_SERVER_SECTION_TYPE_DENY_CONNECTION,
 212   SILC_CONFIG_SERVER_SECTION_TYPE_MOTD,
 213 } SilcServerConfigSectionType;
 214
 215 /* SILC Configuration Section structure. */
 216 typedef struct {
 217   const char *section;
 218   SilcServerConfigSectionType type;
 219   int maxfields;
 220 } SilcServerConfigSection;
 221
 222 /* LIst of all possible config sections in SILC server. */
 223 extern SilcServerConfigSection silc_server_config_sections[];
 224
 225 /* Structure used in parsing the configuration lines. The line is read
 226    from a file to this structure before parsing it further. */
 227 typedef struct SilcServerConfigParseStruct {
 228   SilcBuffer line;
 229   int linenum;
 230   SilcServerConfigSection *section;
 231   struct SilcServerConfigParseStruct *next;
 232   struct SilcServerConfigParseStruct *prev;
 233 } *SilcServerConfigParse;
 234
 235 /* Macros */
 236
 237 /* Allocates list entries for configuration sections. Used by all
 238    config sections as this is common. */
 239 #define SILC_SERVER_CONFIG_LIST_ALLOC(x)                \
 240 do {                                                    \
 241   if (!(x)) {                                           \
 242     (x) = silc_calloc(1, sizeof(*(x)));                 \
 243     (x)->next = NULL;                                   \
 244     (x)->prev = NULL;                                   \
 245   } else {                                              \
 246     if (!(x)->next) {                                   \
 247       (x)->next = silc_calloc(1, sizeof(*(x)->next));   \
 248       (x)->next->next = NULL;                           \
 249       (x)->next->prev = (x);                            \
 250       (x) = (x)->next;                                  \
 251     }                                                   \
 252   }                                                     \
 253 } while(0)
 254
 255 /* Prototypes */
 256 SilcServerConfig silc_server_config_alloc(char *filename);
 257 void silc_server_config_free(SilcServerConfig config);
 258 int silc_server_config_parse(SilcServerConfig config, SilcBuffer buffer,
 259                              SilcServerConfigParse *return_config);
 260 int silc_server_config_parse_lines(SilcServerConfig config,
 261                                    SilcServerConfigParse parse_config);
 262 int silc_server_config_check_sections(uint32 checkmask);
 263 void silc_server_config_setlogfiles(SilcServerConfig config);
 264 bool silc_server_config_register_ciphers(SilcServerConfig config);
 265 bool silc_server_config_register_pkcs(SilcServerConfig config);
 266 bool silc_server_config_register_hashfuncs(SilcServerConfig config);
 267 bool silc_server_config_register_hmacs(SilcServerConfig config);
 268 SilcServerConfigSectionClientConnection *
 269 silc_server_config_find_client_conn(SilcServerConfig config,
 270                                     char *host, int port);
 271 SilcServerConfigSectionServerConnection *
 272 silc_server_config_find_server_conn(SilcServerConfig config,
 273                                     char *host, int port);
 274 SilcServerConfigSectionServerConnection *
 275 silc_server_config_find_router_conn(SilcServerConfig config,
 276                                     char *host, int port);
 277 bool silc_server_config_is_primary_route(SilcServerConfig config);
 278 SilcServerConfigSectionServerConnection *
 279 silc_server_config_get_primary_router(SilcServerConfig config);
 280 SilcServerConfigSectionAdminConnection *
 281 silc_server_config_find_admin(SilcServerConfig config,
 282                               char *host, char *username, char *nickname);
 283 SilcServerConfigSectionDenyConnection *
 284 silc_server_config_denied_conn(SilcServerConfig config, char *host,
 285                                int port);
 286
 287 #endif