include/s_conf.h

   1 /** @file s_conf.h
   2  * @brief ircd configuration file API.
   3  * @version $Id: s_conf.h,v 1.34 2005/08/21 13:46:07 entrope Exp $
   4  */
   5 #ifndef INCLUDED_s_conf_h
   6 #define INCLUDED_s_conf_h
   7 #ifndef INCLUDED_time_h
   8 #include <time.h>              /* struct tm */
   9 #define INCLUDED_time_h
  10 #endif
  11 #ifndef INCLUDED_sys_types_h
  12 #include <sys/types.h>
  13 #define INCLUDED_sys_types_h
  14 #endif
  15 #include "client.h"
  16
  17 struct Client;
  18 struct SLink;
  19 struct Message;
  20
  21 /*
  22  * General defines
  23  */
  24
  25 /*-----------------------------------------------------------------------------
  26  * Macros
  27  */
  28
  29 #define CONF_ILLEGAL            0x80000000 /**< Delete the ConfItem when no remaining clients. */
  30 #define CONF_CLIENT             0x0002     /**< ConfItem describes a Client block */
  31 #define CONF_SERVER             0x0004     /**< ConfItem describes a Connect block */
  32 #define CONF_OPERATOR           0x0020     /**< ConfItem describes an Operator block */
  33 #define CONF_UWORLD             0x8000     /**< ConfItem describes a Uworld server */
  34
  35 #define CONF_AUTOCONNECT        0x0001     /**< Autoconnect to a server */
  36
  37 /** Indicates ConfItem types that count associated clients. */
  38 #define CONF_CLIENT_MASK        (CONF_CLIENT | CONF_OPERATOR | CONF_SERVER)
  39
  40 /** Checks whether the CONF_ILLEGAL bit is set on \a x. */
  41 #define IsIllegal(x)    ((x)->status & CONF_ILLEGAL)
  42
  43 /*
  44  * Structures
  45  */
  46
  47 /** Configuration item to limit peer or client access. */
  48 struct ConfItem
  49 {
  50   struct ConfItem *next;    /**< Next ConfItem in #GlobalConfList */
  51   unsigned int status;      /**< Set of CONF_* bits. */
  52   unsigned int clients;     /**< Number of *LOCAL* clients using this */
  53   unsigned int maximum;     /**< For CONF_SERVER, max hops.
  54                                For CONF_CLIENT, max connects per IP. */
  55   struct ConnectionClass *conn_class;  /**< Class of connection */
  56   struct irc_sockaddr origin;  /**< Local address for outbound connections */
  57   struct irc_sockaddr address; /**< IP and port */
  58   char *username;     /**< For CONF_CLIENT and CONF_OPERATOR, username mask. */
  59   char *host;         /**< Peer hostname */
  60   char *origin_name;  /**< Text form of origin address */
  61   char *passwd;       /**< Password field */
  62   char *name;         /**< Name of peer */
  63   char *hub_limit;    /**< Mask that limits servers allowed behind
  64                          this one. */
  65   time_t hold;        /**< Earliest time to attempt an outbound
  66                          connect on this ConfItem. */
  67   int dns_pending;    /**< A dns request is pending. */
  68   int flags;          /**< Additional modifiers for item. */
  69   int addrbits;       /**< Number of bits valid in ConfItem::address. */
  70   struct Privs privs; /**< Privileges for opers. */
  71   /** Used to detect if a privilege has been set by this ConfItem. */
  72   struct Privs privs_dirty;
  73 };
  74
  75 /** Channel quarantine structure. */
  76 struct qline
  77 {
  78   struct qline *next; /**< Next qline in #GlobalQuarantineList. */
  79   char *chname;       /**< Quarantined channel name. */
  80   char *reason;       /**< Reason for quarantine. */
  81 };
  82
  83 struct sline {
  84   struct sline *next;
  85   char *spoofhost;
  86   char *passwd;
  87   char *realhost;
  88   char *username;
  89   struct irc_in_addr address;
  90   unsigned int flags;
  91   char bits; /* Number of bits for CIDR match on realhost */
  92 };
  93
  94 #define SLINE_FLAGS_HOSTNAME 0x0001 /* S-line by hostname */
  95 #define SLINE_FLAGS_IP       0x0002 /* S-line by IP address/CIDR */
  96
  97 /** Local K-line structure. */
  98 struct DenyConf {
  99   struct DenyConf*    next;     /**< Next DenyConf in #denyConfList. */
 100   char*               hostmask; /**< Mask for  IP or hostname. */
 101   char*               message;  /**< Message to send to denied users. */
 102   char*               usermask; /**< Mask for client's username. */
 103   char*               realmask; /**< Mask for realname. */
 104   struct irc_in_addr  address;  /**< Address for IP-based denies. */
 105   unsigned int        flags;    /**< Interpretation flags for the above.  */
 106   unsigned char       bits;     /**< Number of bits for ipkills */
 107 };
 108
 109 #define DENY_FLAGS_FILE     0x0001 /**< Comment is a filename */
 110
 111 /** Local server configuration. */
 112 struct LocalConf {
 113   char*          name;        /**< Name of server. */
 114   char*          description; /**< Description of server. */
 115   unsigned int   numeric;     /**< Globally assigned server numnick. */
 116   char*          location1;   /**< First line of location information. */
 117   char*          location2;   /**< Second line of location information. */
 118   char*          contact;     /**< Admin contact information. */
 119 };
 120
 121 enum {
 122   CRULE_AUTO = 1, /**< CRule applies to automatic connections. */
 123   CRULE_ALL  = 2, /**< CRule applies to oper-requested connections. */
 124   CRULE_MASK = 3
 125 };
 126
 127 /** Connection rule configuration. */
 128 struct CRuleConf {
 129   struct CRuleConf* next;     /**< Next CRule in cruleConfList. */
 130   char*             hostmask; /**< Mask of affected server names. */
 131   char*             rule;     /**< Text version of the rule. */
 132   int               type;     /**< One of CRULE_AUTO or CRULE_ALL. */
 133   struct CRuleNode* node;     /**< Parsed form of the rule. */
 134 };
 135
 136 /** Authorization check result. */
 137 enum AuthorizationCheckResult {
 138   ACR_OK,                 /**< User accepted. */
 139   ACR_NO_AUTHORIZATION,   /**< No matching ConfItem for the user. */
 140   ACR_TOO_MANY_IN_CLASS,  /**< Connection class was already full. */
 141   ACR_TOO_MANY_FROM_IP,   /**< User's IP already has max connections. */
 142   ACR_ALREADY_AUTHORIZED, /**< User already had an attached ConfItem. */
 143   ACR_BAD_SOCKET          /**< Client has bad file descriptor. */
 144 };
 145
 146 /** Target description for service commands. */
 147 struct nick_host {
 148   struct nick_host *next; /**< Next nick_host struct in struct s_map. */
 149   int nicklen;            /**< offset of @ part of server string */
 150   char nick[1];           /**< start of nick\@server string */
 151 };
 152
 153 #define SMAP_FAST 1           /**< Command does not have MFLG_SLOW. */
 154
 155 /** Target set for a service pseudo-command. */
 156 struct s_map {
 157   struct s_map *next;         /**< Next element in #GlobalServiceMapList. */
 158   struct Message *msg;        /**< Message element formed for this mapping. */
 159   char *name;                 /**< Text name of the mapping. */
 160   char *command;              /**< Command name to use. */
 161   char *prepend;              /**< Extra text to prepend to user's text. */
 162   unsigned int flags;         /**< Bitwise map of SMAP_* flags. */
 163   struct nick_host *services; /**< Linked list of possible targets. */
 164 };
 165
 166
 167 /*
 168  * GLOBALS
 169  */
 170 extern struct ConfItem* GlobalConfList;
 171 extern int              GlobalConfCount;
 172 extern struct s_map*    GlobalServiceMapList;
 173 extern struct qline*    GlobalQuarantineList;
 174 extern struct sline*    GlobalSList;
 175
 176 /*
 177  * Proto types
 178  */
 179
 180 extern int init_conf(void);
 181
 182 extern const struct LocalConf* conf_get_local(void);
 183 extern const struct CRuleConf* conf_get_crule_list(void);
 184 extern const struct DenyConf*  conf_get_deny_list(void);
 185
 186 extern const char* conf_eval_crule(const char* name, int mask);
 187
 188 extern struct ConfItem* attach_confs_byhost(struct Client* cptr, const char* host, int statmask);
 189 extern struct ConfItem* find_conf_byhost(struct SLink* lp, const char* host, int statmask);
 190 extern struct ConfItem* find_conf_byname(struct SLink* lp, const char *name, int statmask);
 191 extern struct ConfItem* conf_find_server(const char* name);
 192
 193 extern void det_confs_butmask(struct Client *cptr, int mask);
 194 extern enum AuthorizationCheckResult attach_conf(struct Client *cptr, struct ConfItem *aconf);
 195 extern struct ConfItem* find_conf_exact(const char* name, struct Client *cptr, int statmask);
 196 extern enum AuthorizationCheckResult conf_check_client(struct Client *cptr);
 197 extern int  conf_check_server(struct Client *cptr);
 198 extern int rehash(struct Client *cptr, int sig);
 199 extern int find_kill(struct Client *cptr, int glinecheck);
 200 extern const char *find_quarantine(const char* chname);
 201 extern void lookup_confhost(struct ConfItem *aconf);
 202 extern void conf_parse_userhost(struct ConfItem *aconf, char *host);
 203 extern struct ConfItem *conf_debug_iline(const char *client);
 204 extern void free_mapping(struct s_map *smap);
 205
 206 extern void conf_add_sline(const char* const* fields, int count);
 207 extern void clear_slines(void);
 208 extern int conf_check_slines(struct Client *cptr);
 209 extern void free_spoofhost(struct sline *spoof);
 210
 211 extern void yyerror(const char *msg);
 212
 213 #endif /* INCLUDED_s_conf_h */