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/* Nickname access list module. |
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* |
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* IRC Services is copyright (c) 1996-2009 Andrew Church. |
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* E-mail: <achurch@achurch.org> |
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* Parts written by Andrew Kempe and others. |
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* This program is free but copyrighted software; see the file GPL.txt for |
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* details. |
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*/ |
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|
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#include "services.h" |
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#include "modules.h" |
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#include "conffile.h" |
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#include "language.h" |
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#include "commands.h" |
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#include "databases.h" |
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#include "modules/operserv/operserv.h" |
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|
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#include "nickserv.h" |
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#include "ns-local.h" |
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|
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/*************************************************************************/ |
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|
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static Module *module_nickserv; |
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|
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static int32 NSAccessMax; |
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static int NSFirstAccessEnable; |
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static int NSFirstAccessWild; |
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|
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/*************************************************************************/ |
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|
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static void do_access(User *u); |
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|
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static Command cmds[] = { |
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{"ACCESS", do_access, NULL, NICK_HELP_ACCESS, |
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-1, NICK_OPER_HELP_ACCESS}, |
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{ NULL } |
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}; |
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|
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/*************************************************************************/ |
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/**************************** Database stuff *****************************/ |
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/*************************************************************************/ |
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|
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/* See autojoin.c for why we don't create our own table. */ |
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|
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/* Temporary structure for loading/saving access records */ |
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typedef struct { |
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uint32 nickgroup; |
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char *mask; |
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} DBRecord; |
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static DBRecord dbrec_static; |
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|
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/* Iterators for first/next routines */ |
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static NickGroupInfo *db_ngi_iterator; |
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static int db_array_iterator; |
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|
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/*************************************************************************/ |
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|
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/* Table access routines */ |
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|
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static void *new_access(void) |
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{ |
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return memset(&dbrec_static, 0, sizeof(dbrec_static)); |
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} |
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|
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static void free_access(void *record) |
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{ |
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free(((DBRecord *)record)->mask); |
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} |
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|
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static void insert_access(void *record) |
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{ |
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DBRecord *dbrec = record; |
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NickGroupInfo *ngi = get_nickgroupinfo(dbrec->nickgroup); |
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if (!ngi) { |
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module_log("Discarding access record for missing nickgroup %u: %s", |
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dbrec->nickgroup, dbrec->mask); |
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free_access(record); |
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} else { |
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ARRAY_EXTEND(ngi->access); |
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ngi->access[ngi->access_count-1] = dbrec->mask; |
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} |
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} |
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|
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static void *next_access(void) |
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{ |
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while (db_ngi_iterator |
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&& db_array_iterator >= db_ngi_iterator->access_count |
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) { |
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db_ngi_iterator = next_nickgroupinfo(); |
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db_array_iterator = 0; |
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} |
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if (db_ngi_iterator) { |
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dbrec_static.nickgroup = db_ngi_iterator->id; |
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dbrec_static.mask = db_ngi_iterator->access[db_array_iterator++]; |
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return &dbrec_static; |
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} else { |
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return NULL; |
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} |
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} |
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|
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static void *first_access(void) |
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{ |
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db_ngi_iterator = first_nickgroupinfo(); |
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db_array_iterator = 0; |
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return next_access(); |
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} |
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|
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/*************************************************************************/ |
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|
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/* Database table definition */ |
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|
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#define FIELD(name,type,...) \ |
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{ #name, type, offsetof(DBRecord,name) , ##__VA_ARGS__ } |
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|
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static DBField access_dbfields[] = { |
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FIELD(nickgroup, DBTYPE_UINT32), |
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FIELD(mask, DBTYPE_STRING), |
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{ NULL } |
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}; |
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|
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static DBTable access_dbtable = { |
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.name = "nick-access", |
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.newrec = new_access, |
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.freerec = free_access, |
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.insert = insert_access, |
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.first = first_access, |
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.next = next_access, |
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.fields = access_dbfields, |
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}; |
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|
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#undef FIELD |
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|
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/*************************************************************************/ |
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/**************************** Local routines *****************************/ |
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/*************************************************************************/ |
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|
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/* Handle the ACCESS command. */ |
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|
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static void do_access(User *u) |
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{ |
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char *cmd = strtok(NULL, " "); |
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char *mask = strtok(NULL, " "); |
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NickInfo *ni; |
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NickGroupInfo *ngi; |
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int i; |
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|
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if (cmd && stricmp(cmd, "LIST") == 0 && mask && is_services_admin(u)) { |
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ni = get_nickinfo(mask); |
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ngi = NULL; |
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if (!ni) { |
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notice_lang(s_NickServ, u, NICK_X_NOT_REGISTERED, mask); |
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} else if (ni->status & NS_VERBOTEN) { |
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notice_lang(s_NickServ, u, NICK_X_FORBIDDEN, mask); |
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} else if (!(ngi = get_ngi(ni))) { |
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notice_lang(s_NickServ, u, INTERNAL_ERROR); |
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} else if (ngi->access_count == 0) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_LIST_X_EMPTY, mask); |
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} else { |
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notice_lang(s_NickServ, u, NICK_ACCESS_LIST_X, mask); |
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ARRAY_FOREACH (i, ngi->access) |
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notice(s_NickServ, u->nick, " %s", ngi->access[i]); |
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} |
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put_nickinfo(ni); |
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put_nickgroupinfo(ngi); |
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|
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} else if (!cmd || ((stricmp(cmd,"LIST")==0) ? mask!=NULL : mask==NULL)) { |
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syntax_error(s_NickServ, u, "ACCESS", NICK_ACCESS_SYNTAX); |
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|
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} else if (mask && !strchr(mask, '@')) { |
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notice_lang(s_NickServ, u, BAD_USERHOST_MASK); |
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notice_lang(s_NickServ, u, MORE_INFO, s_NickServ, "ACCESS"); |
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|
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} else if (ngi = u->ngi, !(ni = u->ni)) { |
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notice_lang(s_NickServ, u, NICK_NOT_REGISTERED); |
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|
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} else if (!user_identified(u)) { |
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notice_lang(s_NickServ, u, NICK_IDENTIFY_REQUIRED, s_NickServ); |
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|
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} else if (stricmp(cmd, "ADD") == 0) { |
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if (readonly) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_DISABLED); |
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return; |
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} |
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if (ngi->access_count >= NSAccessMax) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_REACHED_LIMIT, NSAccessMax); |
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return; |
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} |
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ARRAY_FOREACH (i, ngi->access) { |
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if (stricmp(ngi->access[i], mask) == 0) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_ALREADY_PRESENT, mask); |
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return; |
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} |
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} |
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if (strchr(mask, '!')) |
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notice_lang(s_NickServ, u, NICK_ACCESS_NO_NICKS); |
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ARRAY_EXTEND(ngi->access); |
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ngi->access[ngi->access_count-1] = sstrdup(mask); |
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notice_lang(s_NickServ, u, NICK_ACCESS_ADDED, mask); |
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|
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} else if (stricmp(cmd, "DEL") == 0) { |
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if (readonly) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_DISABLED); |
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return; |
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} |
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/* First try for an exact match; then, a case-insensitive one. */ |
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ARRAY_SEARCH_PLAIN(ngi->access, mask, strcmp, i); |
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if (i == ngi->access_count) |
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ARRAY_SEARCH_PLAIN(ngi->access, mask, stricmp, i); |
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if (i == ngi->access_count) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_NOT_FOUND, mask); |
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return; |
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} |
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notice_lang(s_NickServ, u, NICK_ACCESS_DELETED, ngi->access[i]); |
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free(ngi->access[i]); |
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ARRAY_REMOVE(ngi->access, i); |
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|
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} else if (stricmp(cmd, "LIST") == 0) { |
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if (ngi->access_count == 0) { |
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notice_lang(s_NickServ, u, NICK_ACCESS_LIST_EMPTY); |
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} else { |
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notice_lang(s_NickServ, u, NICK_ACCESS_LIST); |
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ARRAY_FOREACH (i, ngi->access) |
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notice(s_NickServ, u->nick, " %s", ngi->access[i]); |
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} |
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|
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} else { |
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syntax_error(s_NickServ, u, "ACCESS", NICK_ACCESS_SYNTAX); |
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|
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} |
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} |
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|
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/*************************************************************************/ |
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/*************************** Callback routines ***************************/ |
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/*************************************************************************/ |
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|
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/* Nick-registration callback (initializes access list). */ |
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|
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static int do_registered(User *u, NickInfo *ni, NickGroupInfo *ngi, |
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int *replied) |
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{ |
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if (NSFirstAccessEnable) { |
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ngi->access_count = 1; |
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ngi->access = smalloc(sizeof(char *)); |
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if (NSFirstAccessWild) { |
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ngi->access[0] = create_mask(u, 0); |
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} else { |
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ngi->access[0] = smalloc(strlen(u->username)+strlen(u->host)+2); |
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sprintf(ngi->access[0], "%s@%s", u->username, u->host); |
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} |
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} |
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return 0; |
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} |
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|
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/*************************************************************************/ |
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|
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/* Check whether a user is on the access list of the nick they're using. |
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* Return 1 if on the access list, 0 if not. |
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*/ |
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|
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static int check_on_access(User *u) |
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{ |
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int i; |
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char buf[BUFSIZE]; |
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|
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if (!u->ni || !u->ngi) { |
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module_log("check_on_access() BUG: ni or ngi is NULL!"); |
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return 0; |
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} |
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if (u->ngi->access_count == 0) |
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return 0; |
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i = strlen(u->username); |
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snprintf(buf, sizeof(buf), "%s@%s", u->username, u->host); |
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ARRAY_FOREACH (i, u->ngi->access) { |
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if (match_wild_nocase(u->ngi->access[i], buf)) |
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return 1; |
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} |
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return 0; |
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} |
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|
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/*************************************************************************/ |
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/***************************** Module stuff ******************************/ |
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/*************************************************************************/ |
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|
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ConfigDirective module_config[] = { |
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{ "NSAccessMax", { { CD_POSINT, CF_DIRREQ, &NSAccessMax } } }, |
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{ "NSFirstAccessEnable",{{CD_SET, 0, &NSFirstAccessEnable } } }, |
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{ "NSFirstAccessWild",{ { CD_SET, 0, &NSFirstAccessWild } } }, |
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{ NULL } |
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}; |
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|
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/*************************************************************************/ |
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|
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int init_module() |
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{ |
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if (NSAccessMax > MAX_NICK_ACCESS) { |
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module_log("NSAccessMax upper-bounded at MAX_NICK_ACCESS (%d)", |
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MAX_NICK_ACCESS); |
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NSAccessMax = MAX_NICK_ACCESS; |
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} |
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|
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module_nickserv = find_module("nickserv/main"); |
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if (!module_nickserv) { |
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module_log("Main NickServ module not loaded"); |
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return 0; |
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} |
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use_module(module_nickserv); |
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|
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if (!register_commands(module_nickserv, cmds)) { |
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module_log("Unable to register commands"); |
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exit_module(0); |
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return 0; |
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} |
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|
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if (!add_callback(module_nickserv, "check recognized", check_on_access) |
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|| !add_callback(module_nickserv, "registered", do_registered) |
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) { |
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module_log("Unable to add callbacks"); |
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exit_module(0); |
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return 0; |
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} |
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|
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if (!register_dbtable(&access_dbtable)) { |
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module_log("Unable to register database table"); |
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exit_module(0); |
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return 0; |
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} |
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|
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return 1; |
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} |
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|
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/*************************************************************************/ |
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|
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int exit_module(int shutdown_unused) |
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{ |
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unregister_dbtable(&access_dbtable); |
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|
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if (module_nickserv) { |
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remove_callback(module_nickserv, "registered", do_registered); |
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remove_callback(module_nickserv, "check recognized", check_on_access); |
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unregister_commands(module_nickserv, cmds); |
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unuse_module(module_nickserv); |
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module_nickserv = NULL; |
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} |
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|
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return 1; |
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} |
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|
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/*************************************************************************/ |
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|
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/* |
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* Local variables: |
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* c-file-style: "stroustrup" |
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* c-file-offsets: ((case-label . *) (statement-case-intro . *)) |
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* indent-tabs-mode: nil |
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* End: |
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* |
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* vim: expandtab shiftwidth=4: |
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*/ |
