X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Fclient.c;h=d1f751d4adff0d3c52e7fa269a82df70479af02c;hp=8402499936e02c530f81592c3c385a0e1f85a947;hb=e19ce437cadca5697a052ade944118a42709eabd;hpb=03457135b727fc39bb6601b8fb434db2680edc82 diff --git a/src/ngircd/client.c b/src/ngircd/client.c index 84024999..d1f751d4 100644 --- a/src/ngircd/client.c +++ b/src/ngircd/client.c @@ -7,16 +7,17 @@ * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * Please read the file COPYING, README and AUTHORS for more information. - * - * Client management. */ - #define __client_c__ - #include "portab.h" +/** + * @file + * Client management. + */ + #include "imp.h" #include #include @@ -43,10 +44,8 @@ #include - #define GETID_LEN (CLIENT_NICK_LEN-1) + 1 + (CLIENT_USER_LEN-1) + 1 + (CLIENT_HOST_LEN-1) + 1 - static CLIENT *This_Server, *My_Clients; static WHOWAS My_Whowas[MAX_WHOWAS]; @@ -93,7 +92,7 @@ Client_Init( void ) This_Server->hops = 0; gethostname( This_Server->host, CLIENT_HOST_LEN ); - if (!Conf_NoDNS) { + if (Conf_DNS) { h = gethostbyname( This_Server->host ); if (h) strlcpy(This_Server->host, h->h_name, sizeof(This_Server->host)); } @@ -320,7 +319,11 @@ Client_SetHostname( CLIENT *Client, const char *Hostname ) assert( Client != NULL ); assert( Hostname != NULL ); - strlcpy( Client->host, Hostname, sizeof( Client->host )); + if (strlen(Conf_CloakHost)) { + strlcpy( Client->host, Conf_CloakHost, sizeof( Client->host )); + } else { + strlcpy( Client->host, Hostname, sizeof( Client->host )); + } } /* Client_SetHostname */ @@ -332,6 +335,11 @@ Client_SetID( CLIENT *Client, const char *ID ) strlcpy( Client->id, ID, sizeof( Client->id )); + if (Conf_CloakUserToNick) { + strlcpy( Client->user, ID, sizeof( Client->user )); + strlcpy( Client->info, ID, sizeof( Client->info )); + } + /* Hash */ Client->hash = Hash( Client->id ); } /* Client_SetID */ @@ -345,7 +353,9 @@ Client_SetUser( CLIENT *Client, const char *User, bool Idented ) assert( Client != NULL ); assert( User != NULL ); - if (Idented) { + if (Conf_CloakUserToNick) { + strlcpy(Client->user, Client->id, sizeof(Client->user)); + } else if (Idented) { strlcpy(Client->user, User, sizeof(Client->user)); } else { Client->user[0] = '~'; @@ -363,7 +373,8 @@ Client_SetUser( CLIENT *Client, const char *User, bool Idented ) * @param User User name to set. */ GLOBAL void -Client_SetOrigUser(CLIENT *Client, const char *User) { +Client_SetOrigUser(CLIENT UNUSED *Client, const char UNUSED *User) +{ assert(Client != NULL); assert(User != NULL); @@ -381,7 +392,10 @@ Client_SetInfo( CLIENT *Client, const char *Info ) assert( Client != NULL ); assert( Info != NULL ); - strlcpy(Client->info, Info, sizeof(Client->info)); + if (Conf_CloakUserToNick) + strlcpy(Client->info, Client->id, sizeof(Client->info)); + else + strlcpy(Client->info, Info, sizeof(Client->info)); } /* Client_SetInfo */ @@ -552,17 +566,19 @@ Client_Search( const char *Nick ) } /* Client_Search */ +/** + * Get client structure ("introducer") identfied by a server token. + * @return CLIENT structure or NULL if none could be found. + */ GLOBAL CLIENT * Client_GetFromToken( CLIENT *Client, int Token ) { - /* Client-Struktur, die den entsprechenden Introducer (=Client) - * und das gegebene Token hat, liefern. Wird keine gefunden, - * so wird NULL geliefert. */ - CLIENT *c; assert( Client != NULL ); - assert( Token > 0 ); + + if (!Token) + return NULL; c = My_Clients; while (c) { @@ -647,14 +663,36 @@ Client_OrigUser(CLIENT *Client) { #endif +/** + * Return the hostname of a client. + * @param Client Pointer to client structure + * @return Pointer to client hostname + */ GLOBAL char * -Client_Hostname( CLIENT *Client ) +Client_Hostname(CLIENT *Client) { - assert( Client != NULL ); + assert (Client != NULL); return Client->host; } /* Client_Hostname */ +/** + * Get potentially cloaked hostname of a client. + * If the client has not enabled cloaking, the real hostname is used. + * @param Client Pointer to client structure + * @return Pointer to client hostname + */ +GLOBAL char * +Client_HostnameCloaked(CLIENT *Client) +{ + assert(Client != NULL); + if (Client_HasMode(Client, 'x')) + return Client_ID(Client->introducer); + else + return Client_Hostname(Client); +} /* Client_HostnameCloaked */ + + GLOBAL char * Client_Password( CLIENT *Client ) { @@ -727,23 +765,56 @@ Client_NextHop( CLIENT *Client ) /** - * return Client-ID ("client!user@host"), this ID is needed for e.g. - * prefixes. Returnes pointer to static buffer. + * Return ID of a client: "client!user@host" + * This client ID is used for IRC prefixes, for example. + * Please note that this function uses a global static buffer, so you can't + * nest invocations without overwriting earlier results! + * @param Client Pointer to client structure + * @return Pointer to global buffer containing the client ID */ GLOBAL char * Client_Mask( CLIENT *Client ) { - static char GetID_Buffer[GETID_LEN]; + static char Mask_Buffer[GETID_LEN]; - assert( Client != NULL ); + assert (Client != NULL); - if( Client->type == CLIENT_SERVER ) return Client->id; + /* Servers: return name only, there is no "mask" */ + if (Client->type == CLIENT_SERVER) + return Client->id; - snprintf(GetID_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user, Client->host); - return GetID_Buffer; + snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", + Client->id, Client->user, Client->host); + return Mask_Buffer; } /* Client_Mask */ +/** + * Return ID of a client with cloaked hostname: "client!user@server-name" + * This client ID is used for IRC prefixes, for example. + * Please note that this function uses a global static buffer, so you can't + * nest invocations without overwriting earlier results! + * If the client has not enabled cloaking, the real hostname is used. + * @param Client Pointer to client structure + * @return Pointer to global buffer containing the client ID + */ +GLOBAL char * +Client_MaskCloaked(CLIENT *Client) +{ + static char Mask_Buffer[GETID_LEN]; + + assert (Client != NULL); + + /* Is the client using cloaking at all? */ + if (!Client_HasMode(Client, 'x')) + return Client_Mask(Client); + + snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", + Client->id, Client->user, Client_ID(Client->introducer)); + return Mask_Buffer; +} /* Client_MaskCloaked */ + + GLOBAL CLIENT * Client_Introducer( CLIENT *Client ) { @@ -776,23 +847,37 @@ Client_Away( CLIENT *Client ) } /* Client_Away */ +/** + * Make sure that a given nickname is valid. + * + * If the nickname is not valid for the given client, this function sends back + * the appropriate error messages. + * + * @param Client Client that wants to change the nickname. + * @param Nick New nick name. + * @returns true if nickname is valid, false otherwise. + */ GLOBAL bool -Client_CheckNick( CLIENT *Client, char *Nick ) +Client_CheckNick(CLIENT *Client, char *Nick) { - assert( Client != NULL ); - assert( Nick != NULL ); - - if (! Client_IsValidNick( Nick )) - { - IRC_WriteStrClient( Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID( Client ), Nick ); + assert(Client != NULL); + assert(Nick != NULL); + + if (!Client_IsValidNick(Nick)) { + if (strlen(Nick ) >= Conf_MaxNickLength) + IRC_WriteStrClient(Client, ERR_NICKNAMETOOLONG_MSG, + Client_ID(Client), Nick, + Conf_MaxNickLength - 1); + else + IRC_WriteStrClient(Client, ERR_ERRONEUSNICKNAME_MSG, + Client_ID(Client), Nick); return false; } - /* Nick bereits vergeben? */ - if( Client_Search( Nick )) - { - /* den Nick gibt es bereits */ - IRC_WriteStrClient( Client, ERR_NICKNAMEINUSE_MSG, Client_ID( Client ), Nick ); + /* Nickname already registered? */ + if (Client_Search(Nick)) { + IRC_WriteStrClient(Client, ERR_NICKNAMEINUSE_MSG, + Client_ID(Client), Nick); return false; } @@ -948,23 +1033,31 @@ Client_MyMaxUserCount( void ) } /* Client_MyMaxUserCount */ +/** + * Check that a given nickname is valid. + * + * @param Nick the nickname to check. + * @returns true if nickname is valid, false otherwise. + */ GLOBAL bool -Client_IsValidNick( const char *Nick ) +Client_IsValidNick(const char *Nick) { const char *ptr; static const char goodchars[] = ";0123456789-"; - assert( Nick != NULL ); + assert (Nick != NULL); - if( Nick[0] == '#' ) return false; - if( strchr( goodchars, Nick[0] )) return false; - if( strlen( Nick ) >= Conf_MaxNickLength) return false; + if (strchr(goodchars, Nick[0])) + return false; + if (strlen(Nick ) >= Conf_MaxNickLength) + return false; ptr = Nick; - while( *ptr ) - { - if (( *ptr < 'A' ) && ( ! strchr( goodchars, *ptr ))) return false; - if ( *ptr > '}' ) return false; + while (*ptr) { + if (*ptr < 'A' && !strchr(goodchars, *ptr )) + return false; + if (*ptr > '}') + return false; ptr++; } @@ -1121,6 +1214,10 @@ Client_RegisterWhowas( CLIENT *Client ) assert( Client != NULL ); + /* Don't register WHOWAS information when "MorePrivacy" is enabled. */ + if (Conf_MorePrivacy) + return; + now = time(NULL); /* Don't register clients that were connected less than 30 seconds. */ if( now - Client->starttime < 30 ) @@ -1138,7 +1235,7 @@ Client_RegisterWhowas( CLIENT *Client ) sizeof( My_Whowas[slot].id )); strlcpy( My_Whowas[slot].user, Client_User( Client ), sizeof( My_Whowas[slot].user )); - strlcpy( My_Whowas[slot].host, Client_Hostname( Client ), + strlcpy( My_Whowas[slot].host, Client_HostnameCloaked( Client ), sizeof( My_Whowas[slot].host )); strlcpy( My_Whowas[slot].info, Client_Info( Client ), sizeof( My_Whowas[slot].info )); @@ -1219,4 +1316,26 @@ Destroy_UserOrService(CLIENT *Client, const char *Txt, const char *FwdMsg, bool } /* Destroy_UserOrService */ +#ifdef DEBUG + +GLOBAL void +Client_DebugDump(void) +{ + CLIENT *c; + + Log(LOG_DEBUG, "Client status:"); + c = My_Clients; + while (c) { + Log(LOG_DEBUG, + " - %s: type=%d, host=%s, user=%s, conn=%d, start=%ld, flags=%s", + Client_ID(c), Client_Type(c), Client_Hostname(c), + Client_User(c), Client_Conn(c), Client_StartTime(c), + Client_Flags(c)); + c = (CLIENT *)c->next; + } +} /* Client_DumpClients */ + +#endif + + /* -eof- */