mirror of
https://github.com/matrix-construct/construct
synced 2024-11-18 07:50:57 +01:00
152 lines
4 KiB
C++
152 lines
4 KiB
C++
/*
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* ircd-ratbox: A slightly useful ircd.
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* m_links.c: Shows what servers are currently connected.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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using namespace ircd;
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static const char links_desc[] =
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"Provides the LINKS command to view servers linked to the host server";
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static void m_links(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void mo_links(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static char * clean_string(char *dest, const unsigned char *src, size_t len);
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struct Message links_msgtab = {
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"LINKS", 0, 0, 0, 0,
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{mg_unreg, {m_links, 0}, {mo_links, 0}, mg_ignore, mg_ignore, {mo_links, 0}}
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};
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int doing_links_hook;
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mapi_clist_av1 links_clist[] = { &links_msgtab, NULL };
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mapi_hlist_av1 links_hlist[] = {
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{ "doing_links", &doing_links_hook },
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{ NULL, NULL }
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};
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DECLARE_MODULE_AV2(links, NULL, NULL, links_clist, links_hlist, NULL, NULL, NULL, links_desc);
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/*
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* m_links - LINKS message handler
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* parv[1] = servername mask
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* or
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* parv[1] = server to query
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* parv[2] = servername mask
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*/
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static void
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m_links(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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if(ConfigServerHide.flatten_links && !is_exempt_shide(source))
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cache::serv::send_flattened_links(source);
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else
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mo_links(msgbuf_p, client, source, parc, parv);
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}
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static void
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mo_links(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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const char *mask = "";
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client::client *target_p;
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char clean_mask[2 * HOSTLEN + 4];
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hook_cdata hd;
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rb_dlink_node *ptr;
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if(parc > 2)
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{
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if(strlen(parv[2]) > HOSTLEN)
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return;
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if(hunt_server(&client, &source, ":%s LINKS %s :%s", 1, parc, parv)
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!= HUNTED_ISME)
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return;
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mask = parv[2];
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}
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else if(parc == 2)
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mask = parv[1];
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if(*mask) /* only necessary if there is a mask */
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mask = collapse(clean_string
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(clean_mask, (const unsigned char *) mask, 2 * HOSTLEN));
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hd.client = &source;
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hd.arg1 = mask;
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hd.arg2 = NULL;
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call_hook(doing_links_hook, &hd);
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RB_DLINK_FOREACH(ptr, global_serv_list.head)
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{
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target_p = (client::client *)ptr->data;
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if(*mask && !match(mask, target_p->name))
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continue;
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/* We just send the reply, as if theyre here theres either no SHIDE,
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* or theyre an oper..
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*/
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sendto_one_numeric(&source, RPL_LINKS, form_str(RPL_LINKS),
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target_p->name, target_p->servptr->name,
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target_p->hopcount,
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target_p->info[0] ? target_p->info : "(Unknown Location)");
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}
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sendto_one_numeric(&source, RPL_ENDOFLINKS, form_str(RPL_ENDOFLINKS),
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EmptyString(mask) ? "*" : mask);
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}
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static char *
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clean_string(char *dest, const unsigned char *src, size_t len)
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{
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char *d = dest;
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s_assert(0 != dest);
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s_assert(0 != src);
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if(dest == NULL || src == NULL)
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return NULL;
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while (*src && (len > 1))
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{
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if(*src & 0x80) /* if high bit is set */
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{
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*d++ = '.';
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--len;
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if(len <= 1)
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break;
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}
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else if(!rfc1459::is_print(*src)) // if NOT printable
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{
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*d++ = '^';
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--len;
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if(len <= 1)
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break;
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*d++ = 0x40 + *src; /* turn it into a printable */
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}
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else
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*d++ = *src;
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++src;
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--len;
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}
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*d = '\0';
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return dest;
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}
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