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 SilcConfigServerSectionAlgStruct {
  26   char *alg_name;
  27   char *sim_name;
  28   unsigned int block_len;
  29   unsigned int key_len;
  30   struct SilcConfigServerSectionAlgStruct *next;
  31   struct SilcConfigServerSectionAlgStruct *prev;
  32 #define SILC_CONFIG_SERVER_MODNAME "builtin"
  33 } SilcConfigServerSectionAlg;
  34
  35 /* Holds server information from config file */
  36 typedef struct {
  37   char *server_name;
  38   char *server_ip;
  39   char *location;
  40   unsigned short port;
  41 } SilcConfigServerSectionServerInfo;
  42
  43 /* Holds server's administrative information from config file */
  44 typedef struct {
  45   char *location;
  46   char *server_type;
  47   char *admin_name;
  48   char *admin_email;
  49 } SilcConfigServerSectionAdminInfo;
  50
  51 /* Holds all the ports the server is listenning on */
  52 typedef struct SilcConfigServerSectionListenPortStruct {
  53   char *host;
  54   char *remote_ip;
  55   unsigned short port;
  56   struct SilcConfigServerSectionListenPortStruct *next;
  57   struct SilcConfigServerSectionListenPortStruct *prev;
  58 } SilcConfigServerSectionListenPort;
  59
  60 /* Holds server's execution identity, or the user and group which
  61    to change from root when server starts */
  62 typedef struct {
  63  char *user;
  64  char *group;
  65 } SilcConfigServerSectionIdentity;
  66
  67 /* Holds all the configured log files. */
  68 typedef struct SilcConfigServerSectionLoggingStruct {
  69   char *logtype;
  70   char *filename;
  71   unsigned int maxsize;
  72   struct SilcConfigServerSectionLoggingStruct *next;
  73   struct SilcConfigServerSectionLoggingStruct *prev;
  74
  75 /* Allowed <Logging> section types */
  76 #define SILC_CONFIG_SERVER_LF_INFO "infologfile"
  77 #define SILC_CONFIG_SERVER_LF_WARNING "warninglogfile"
  78 #define SILC_CONFIG_SERVER_LF_ERROR "errorlogfile"
  79 #define SILC_CONFIG_SERVER_LF_FATAL "fatalogfile"
  80 } SilcConfigServerSectionLogging;
  81
  82 /* Holds all configured connection classes */
  83 typedef struct SilcConfigServerSectionConnectionClassStruct {
  84   unsigned int class;
  85   unsigned int ping_freq;
  86   unsigned int connect_freq;
  87   unsigned int max_links;
  88   struct SilcConfigServerSectionConnectionClassStruct *next;
  89   struct SilcConfigServerSectionConnectionClassStruct *prev;
  90 } SilcConfigServerSectionConnectionClass;
  91
  92 #define SILC_CONFIG_SERVER_AUTH_METH_PASSWD "passwd"
  93 #define SILC_CONFIG_SERVER_AUTH_METH_PUBKEY "pubkey"
  94
  95 /* Holds all client authentication data from config file */
  96 typedef struct SilcConfigServerSectionClientConnectionStruct {
  97   char *host;
  98   int auth_meth;
  99   char *auth_data;
 100   unsigned short port;
 101   unsigned int class;
 102   struct SilcConfigServerSectionClientConnectionStruct *next;
 103   struct SilcConfigServerSectionClientConnectionStruct *prev;
 104 } SilcConfigServerSectionClientConnection;
 105
 106 /* Hols all server's administrators authentication data from config file */
 107 typedef struct SilcConfigServerSectionAdminConnectionStruct {
 108   char *host;
 109   int auth_meth;
 110   char *auth_data;
 111   char *nickname;
 112   unsigned int class;
 113   struct SilcConfigServerSectionAdminConnectionStruct *next;
 114   struct SilcConfigServerSectionAdminConnectionStruct *prev;
 115 } SilcConfigServerSectionAdminConnection;
 116
 117 /* Holds all configured server/router connections from config file */
 118 typedef struct SilcConfigServerSectionServerConnectionStruct {
 119   char *host;
 120   int auth_meth;
 121   char *auth_data;
 122   unsigned short port;
 123   char *version;
 124   unsigned int class;
 125   int initiator;
 126   struct SilcConfigServerSectionServerConnectionStruct *next;
 127   struct SilcConfigServerSectionServerConnectionStruct *prev;
 128 } SilcConfigServerSectionServerConnection;
 129
 130 /* Holds all configured denied connections from config file */
 131 typedef struct {
 132   char *host;
 133   char *time;
 134   char *comment;
 135   unsigned short port;
 136 } SilcConfigServerSectionDenyConnection;
 137
 138 /* Holds all client redirections from config file */
 139 typedef struct {
 140   char *host;
 141   unsigned short port;
 142 } SilcConfigServerSectionRedirectClient;
 143
 144 /* Holds motd file */
 145 typedef struct {
 146   char *motd_file;
 147 } SilcConfigServerSectionMotd;
 148
 149 /*
 150    SILC Server Config object.
 151
 152    This object holds all the data parsed from the SILC server configuration
 153    file. This is mainly used at the initialization of the server.
 154
 155 */
 156 typedef struct {
 157   /* Pointer back to the server */
 158   void *server;
 159
 160   /* Filename of the configuration file */
 161   char *filename;
 162
 163   /* Configuration sections */
 164   SilcConfigServerSectionAlg *cipher;
 165   SilcConfigServerSectionAlg *pkcs;
 166   SilcConfigServerSectionAlg *hash_func;
 167   SilcConfigServerSectionServerInfo *server_info;
 168   SilcConfigServerSectionAdminInfo *admin_info;
 169   SilcConfigServerSectionListenPort *listen_port;
 170   SilcConfigServerSectionIdentity *identity;
 171   SilcConfigServerSectionLogging *logging;
 172   SilcConfigServerSectionConnectionClass *conn_class;
 173   SilcConfigServerSectionClientConnection *clients;
 174   SilcConfigServerSectionServerConnection *servers;
 175   SilcConfigServerSectionServerConnection *routers;
 176   SilcConfigServerSectionAdminConnection *admins;
 177   SilcConfigServerSectionDenyConnection *denied;
 178   SilcConfigServerSectionRedirectClient *redirect;
 179   SilcConfigServerSectionMotd *motd;
 180 } SilcConfigServerObject;
 181
 182 typedef SilcConfigServerObject *SilcConfigServer;
 183
 184 /* Configuration section type enumerations. */
 185 typedef enum {
 186   SILC_CONFIG_SERVER_SECTION_TYPE_NONE = 0,
 187   SILC_CONFIG_SERVER_SECTION_TYPE_CIPHER,
 188   SILC_CONFIG_SERVER_SECTION_TYPE_PKCS,
 189   SILC_CONFIG_SERVER_SECTION_TYPE_HASH_FUNCTION,
 190   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_INFO,
 191   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_INFO,
 192   SILC_CONFIG_SERVER_SECTION_TYPE_LISTEN_PORT,
 193   SILC_CONFIG_SERVER_SECTION_TYPE_IDENTITY,
 194   SILC_CONFIG_SERVER_SECTION_TYPE_LOGGING,
 195   SILC_CONFIG_SERVER_SECTION_TYPE_CONNECTION_CLASS,
 196   SILC_CONFIG_SERVER_SECTION_TYPE_CLIENT_CONNECTION,
 197   SILC_CONFIG_SERVER_SECTION_TYPE_SERVER_CONNECTION,
 198   SILC_CONFIG_SERVER_SECTION_TYPE_ROUTER_CONNECTION,
 199   SILC_CONFIG_SERVER_SECTION_TYPE_ADMIN_CONNECTION,
 200   SILC_CONFIG_SERVER_SECTION_TYPE_DENY_CONNECTION,
 201   SILC_CONFIG_SERVER_SECTION_TYPE_REDIRECT_CLIENT,
 202   SILC_CONFIG_SERVER_SECTION_TYPE_MOTD,
 203 } SilcConfigServerSectionType;
 204
 205 /* SILC Configuration Section structure. */
 206 typedef struct {
 207   const char *section;
 208   SilcConfigServerSectionType type;
 209   unsigned int maxfields;
 210 } SilcConfigServerSection;
 211
 212 /* LIst of all possible config sections in SILC server. */
 213 extern SilcConfigServerSection silc_config_server_sections[];
 214
 215 /* Structure used in parsing the configuration lines. The line is read
 216    from a file to this structure before parsing it further. */
 217 typedef struct SilcConfigServerParseStruct {
 218   SilcBuffer line;
 219   unsigned int linenum;
 220   SilcConfigServerSection *section;
 221   struct SilcConfigServerParseStruct *next;
 222   struct SilcConfigServerParseStruct *prev;
 223 } *SilcConfigServerParse;
 224
 225 /* Macros */
 226
 227 /* Allocates list entries for configuration sections. Used by all
 228    config sections as this is common. */
 229 #define SILC_SERVER_CONFIG_LIST_ALLOC(x)                \
 230 do {                                                    \
 231   if (!(x)) {                                           \
 232     (x) = silc_calloc(1, sizeof(*(x)));                 \
 233     (x)->next = NULL;                                   \
 234     (x)->prev = NULL;                                   \
 235   } else {                                              \
 236     if (!(x)->next) {                                   \
 237       (x)->next = silc_calloc(1, sizeof(*(x)->next));   \
 238       (x)->next->next = NULL;                           \
 239       (x)->next->prev = (x);                            \
 240       (x) = (x)->next;                                  \
 241     }                                                   \
 242   }                                                     \
 243 } while(0)
 244
 245 /* Prototypes */
 246 SilcConfigServer silc_config_server_alloc(char *filename);
 247 void silc_config_server_free(SilcConfigServer config);
 248 int silc_config_server_parse(SilcConfigServer config, SilcBuffer buffer,
 249                              SilcConfigServerParse *return_config);
 250 int silc_config_server_parse_lines(SilcConfigServer config,
 251                                    SilcConfigServerParse parse_config);
 252 int silc_config_server_check_sections(unsigned int checkmask);
 253 void silc_config_server_setlogfiles(SilcConfigServer config);
 254 void silc_config_server_register_ciphers(SilcConfigServer config);
 255 void silc_config_server_register_pkcs(SilcConfigServer config);
 256 void silc_config_server_register_hashfuncs(SilcConfigServer config);
 257 SilcConfigServerSectionClientConnection *
 258 silc_config_server_find_client_conn(SilcConfigServer config,
 259                                     char *host, int port);
 260 SilcConfigServerSectionServerConnection *
 261 silc_config_server_find_server_conn(SilcConfigServer config,
 262                                     char *host, int port);
 263 SilcConfigServerSectionServerConnection *
 264 silc_config_server_find_router_conn(SilcConfigServer config,
 265                                     char *host, int port);
 266 void silc_config_server_print();
 267
 268 #endif