1 |
adx |
30 |
/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* s_serv.c: Server related functions. |
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* |
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* Copyright (C) 2005 by the past and present ircd coders, and others. |
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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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knight |
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* $Id$ |
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adx |
30 |
*/ |
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#include "stdinc.h" |
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#ifdef HAVE_LIBCRYPTO |
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#include <openssl/rsa.h> |
28 |
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#include "rsa.h" |
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#endif |
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michael |
1011 |
#include "list.h" |
31 |
adx |
30 |
#include "channel.h" |
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#include "channel_mode.h" |
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#include "client.h" |
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#include "dbuf.h" |
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#include "event.h" |
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#include "fdlist.h" |
37 |
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#include "hash.h" |
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#include "irc_string.h" |
39 |
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#include "sprintf_irc.h" |
40 |
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#include "ircd.h" |
41 |
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#include "ircd_defs.h" |
42 |
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#include "s_bsd.h" |
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#include "numeric.h" |
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#include "packet.h" |
45 |
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#include "irc_res.h" |
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#include "s_conf.h" |
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#include "s_serv.h" |
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#include "s_log.h" |
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#include "s_user.h" |
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#include "send.h" |
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#include "memory.h" |
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#include "channel.h" /* chcap_usage_counts stuff...*/ |
53 |
michael |
1243 |
#include "parse.h" |
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adx |
30 |
|
55 |
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#define MIN_CONN_FREQ 300 |
56 |
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57 |
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static dlink_list cap_list = { NULL, NULL, 0 }; |
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static void server_burst(struct Client *); |
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static int fork_server(struct Client *); |
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static void burst_all(struct Client *); |
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static void send_tb(struct Client *client_p, struct Channel *chptr); |
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63 |
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static CNCB serv_connect_callback; |
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static void start_io(struct Client *); |
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static void burst_members(struct Client *, struct Channel *); |
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static SlinkRplHnd slink_error; |
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static SlinkRplHnd slink_zipstats; |
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#ifdef HAVE_LIBCRYPTO |
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struct EncCapability CipherTable[] = |
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{ |
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#ifdef HAVE_EVP_BF_CFB |
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{ "BF/168", CAP_ENC_BF_168, 24, CIPHER_BF }, |
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{ "BF/128", CAP_ENC_BF_128, 16, CIPHER_BF }, |
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#endif |
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#ifdef HAVE_EVP_CAST5_CFB |
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{ "CAST/128", CAP_ENC_CAST_128, 16, CIPHER_CAST }, |
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#endif |
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#ifdef HAVE_EVP_IDEA_CFB |
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{ "IDEA/128", CAP_ENC_IDEA_128, 16, CIPHER_IDEA }, |
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#endif |
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#ifdef HAVE_EVP_RC5_32_12_16_CFB |
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{ "RC5.16/128", CAP_ENC_RC5_16_128, 16, CIPHER_RC5_16 }, |
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{ "RC5.12/128", CAP_ENC_RC5_12_128, 16, CIPHER_RC5_12 }, |
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{ "RC5.8/128", CAP_ENC_RC5_8_128, 16, CIPHER_RC5_8 }, |
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#endif |
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#ifdef HAVE_EVP_DES_EDE3_CFB |
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{ "3DES/168", CAP_ENC_3DES_168, 24, CIPHER_3DES }, |
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#endif |
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#ifdef HAVE_EVP_DES_CFB |
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{ "DES/56", CAP_ENC_DES_56, 8, CIPHER_DES }, |
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#endif |
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{ 0, 0, 0, 0 } |
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}; |
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#endif |
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struct SlinkRplDef slinkrpltab[] = { |
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{ SLINKRPL_ERROR, slink_error, SLINKRPL_FLAG_DATA }, |
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{ SLINKRPL_ZIPSTATS, slink_zipstats, SLINKRPL_FLAG_DATA }, |
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{ 0, 0, 0 }, |
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}; |
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106 |
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void |
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slink_error(unsigned int rpl, unsigned int len, unsigned char *data, |
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struct Client *server_p) |
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{ |
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assert(rpl == SLINKRPL_ERROR); |
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assert(len < 256); |
113 |
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data[len-1] = '\0'; |
115 |
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sendto_realops_flags(UMODE_ALL, L_ALL, "SlinkError for %s: %s", |
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server_p->name, data); |
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/* XXX should this be exit_client? */ |
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exit_client(server_p, &me, "servlink error -- terminating link"); |
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} |
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void |
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slink_zipstats(unsigned int rpl, unsigned int len, unsigned char *data, |
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struct Client *server_p) |
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{ |
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struct ZipStats zipstats; |
127 |
michael |
948 |
uint64_t in = 0, in_wire = 0, out = 0, out_wire = 0; |
128 |
adx |
30 |
int i = 0; |
129 |
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assert(rpl == SLINKRPL_ZIPSTATS); |
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assert(len == 16); |
132 |
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assert(IsCapable(server_p, CAP_ZIP)); |
133 |
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/* Yes, it needs to be done this way, no we cannot let the compiler |
135 |
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* work with the pointer to the structure. This works around a GCC |
136 |
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* bug on SPARC that affects all versions at the time of this writing. |
137 |
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* I will feed you to the creatures living in RMS's beard if you do |
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* not leave this as is, without being sure that you are not causing |
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* regression for most of our installed SPARC base. |
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* -jmallett, 04/27/2002 |
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*/ |
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memcpy(&zipstats, &server_p->localClient->zipstats, sizeof(struct ZipStats)); |
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in |= (data[i++] << 24); |
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in |= (data[i++] << 16); |
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in |= (data[i++] << 8); |
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in |= (data[i++] ); |
148 |
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in_wire |= (data[i++] << 24); |
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in_wire |= (data[i++] << 16); |
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in_wire |= (data[i++] << 8); |
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in_wire |= (data[i++] ); |
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154 |
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out |= (data[i++] << 24); |
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out |= (data[i++] << 16); |
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out |= (data[i++] << 8); |
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out |= (data[i++] ); |
158 |
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out_wire |= (data[i++] << 24); |
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out_wire |= (data[i++] << 16); |
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out_wire |= (data[i++] << 8); |
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out_wire |= (data[i++] ); |
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/* This macro adds b to a if a plus b is not an overflow, and sets the |
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* value of a to b if it is. |
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* Add and Set if No Overflow. |
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*/ |
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#define ASNO(a, b) a = (a + b >= a ? a + b : b) |
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ASNO(zipstats.in, in); |
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ASNO(zipstats.out, out); |
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ASNO(zipstats.in_wire, in_wire); |
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ASNO(zipstats.out_wire, out_wire); |
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if (zipstats.in > 0) |
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zipstats.in_ratio = (((double)(zipstats.in - zipstats.in_wire) / |
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(double)zipstats.in) * 100.00); |
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else |
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zipstats.in_ratio = 0; |
180 |
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181 |
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if (zipstats.out > 0) |
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zipstats.out_ratio = (((double)(zipstats.out - zipstats.out_wire) / |
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(double)zipstats.out) * 100.00); |
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else |
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zipstats.out_ratio = 0; |
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187 |
michael |
948 |
memcpy(&server_p->localClient->zipstats, &zipstats, sizeof(struct ZipStats)); |
188 |
adx |
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} |
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void |
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collect_zipstats(void *unused) |
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{ |
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michael |
948 |
dlink_node *ptr = NULL; |
194 |
adx |
30 |
|
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DLINK_FOREACH(ptr, serv_list.head) |
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{ |
197 |
michael |
948 |
struct Client *target_p = ptr->data; |
198 |
adx |
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|
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if (IsCapable(target_p, CAP_ZIP)) |
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{ |
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/* only bother if we haven't already got something queued... */ |
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if (!target_p->localClient->slinkq) |
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{ |
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target_p->localClient->slinkq = MyMalloc(1); /* sigh.. */ |
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target_p->localClient->slinkq[0] = SLINKCMD_ZIPSTATS; |
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target_p->localClient->slinkq_ofs = 0; |
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target_p->localClient->slinkq_len = 1; |
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send_queued_slink_write(target_p); |
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} |
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} |
211 |
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} |
212 |
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} |
213 |
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214 |
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#ifdef HAVE_LIBCRYPTO |
215 |
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struct EncCapability * |
216 |
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check_cipher(struct Client *client_p, struct AccessItem *aconf) |
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{ |
218 |
michael |
319 |
struct EncCapability *epref = NULL; |
219 |
adx |
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|
220 |
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/* Use connect{} specific info if available */ |
221 |
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if (aconf->cipher_preference) |
222 |
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epref = aconf->cipher_preference; |
223 |
michael |
319 |
else if (ConfigFileEntry.default_cipher_preference) |
224 |
adx |
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epref = ConfigFileEntry.default_cipher_preference; |
225 |
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226 |
michael |
319 |
/* |
227 |
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* If the server supports the capability in hand, return the matching |
228 |
adx |
30 |
* conf struct. Otherwise, return NULL (an error). |
229 |
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*/ |
230 |
michael |
319 |
if (epref && IsCapableEnc(client_p, epref->cap)) |
231 |
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return epref; |
232 |
adx |
30 |
|
233 |
michael |
319 |
return NULL; |
234 |
adx |
30 |
} |
235 |
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#endif /* HAVE_LIBCRYPTO */ |
236 |
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237 |
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/* |
238 |
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* write_links_file |
239 |
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* |
240 |
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* inputs - void pointer which is not used |
241 |
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* output - NONE |
242 |
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* side effects - called from an event, write out list of linked servers |
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* but in no particular order. |
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*/ |
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void |
246 |
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write_links_file(void* notused) |
247 |
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{ |
248 |
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MessageFileLine *next_mptr = 0; |
249 |
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MessageFileLine *mptr = 0; |
250 |
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MessageFileLine *currentMessageLine = 0; |
251 |
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MessageFileLine *newMessageLine = 0; |
252 |
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MessageFile *MessageFileptr; |
253 |
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const char *p; |
254 |
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FBFILE *file; |
255 |
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char buff[512]; |
256 |
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dlink_node *ptr; |
257 |
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258 |
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MessageFileptr = &ConfigFileEntry.linksfile; |
259 |
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260 |
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if ((file = fbopen(MessageFileptr->fileName, "w")) == NULL) |
261 |
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return; |
262 |
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263 |
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for (mptr = MessageFileptr->contentsOfFile; mptr; mptr = next_mptr) |
264 |
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{ |
265 |
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next_mptr = mptr->next; |
266 |
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MyFree(mptr); |
267 |
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} |
268 |
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269 |
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MessageFileptr->contentsOfFile = NULL; |
270 |
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currentMessageLine = NULL; |
271 |
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272 |
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DLINK_FOREACH(ptr, global_serv_list.head) |
273 |
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{ |
274 |
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size_t nbytes = 0; |
275 |
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struct Client *target_p = ptr->data; |
276 |
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277 |
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/* skip ourselves, we send ourselves in /links */ |
278 |
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if (IsMe(target_p)) |
279 |
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continue; |
280 |
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281 |
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/* skip hidden servers */ |
282 |
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if (IsHidden(target_p) && !ConfigServerHide.disable_hidden) |
283 |
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continue; |
284 |
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285 |
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if (target_p->info[0]) |
286 |
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p = target_p->info; |
287 |
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else |
288 |
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p = "(Unknown Location)"; |
289 |
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290 |
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newMessageLine = MyMalloc(sizeof(MessageFileLine)); |
291 |
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292 |
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/* Attempt to format the file in such a way it follows the usual links output |
293 |
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* ie "servername uplink :hops info" |
294 |
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* Mostly for aesthetic reasons - makes it look pretty in mIRC ;) |
295 |
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* - madmax |
296 |
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*/ |
297 |
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298 |
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/* |
299 |
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* For now, check this ircsprintf wont overflow - it shouldnt on a |
300 |
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* default config but it is configurable.. |
301 |
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* This should be changed to an snprintf at some point, but I'm wanting to |
302 |
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* know if this is a cause of a bug - cryogen |
303 |
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*/ |
304 |
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assert(strlen(target_p->name) + strlen(me.name) + 6 + strlen(p) <= |
305 |
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MESSAGELINELEN); |
306 |
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ircsprintf(newMessageLine->line, "%s %s :1 %s", |
307 |
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target_p->name, me.name, p); |
308 |
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newMessageLine->next = NULL; |
309 |
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310 |
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if (MessageFileptr->contentsOfFile) |
311 |
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{ |
312 |
|
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if (currentMessageLine) |
313 |
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currentMessageLine->next = newMessageLine; |
314 |
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currentMessageLine = newMessageLine; |
315 |
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} |
316 |
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else |
317 |
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{ |
318 |
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MessageFileptr->contentsOfFile = newMessageLine; |
319 |
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currentMessageLine = newMessageLine; |
320 |
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} |
321 |
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322 |
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nbytes = ircsprintf(buff, "%s %s :1 %s\n", target_p->name, me.name, p); |
323 |
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fbputs(buff, file, nbytes); |
324 |
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} |
325 |
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326 |
|
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fbclose(file); |
327 |
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} |
328 |
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|
329 |
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/* hunt_server() |
330 |
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* Do the basic thing in delivering the message (command) |
331 |
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* across the relays to the specific server (server) for |
332 |
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* actions. |
333 |
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* |
334 |
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* Note: The command is a format string and *MUST* be |
335 |
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* of prefixed style (e.g. ":%s COMMAND %s ..."). |
336 |
|
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* Command can have only max 8 parameters. |
337 |
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* |
338 |
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* server parv[server] is the parameter identifying the |
339 |
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* target server. |
340 |
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* |
341 |
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* *WARNING* |
342 |
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* parv[server] is replaced with the pointer to the |
343 |
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* real servername from the matched client (I'm lazy |
344 |
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* now --msa). |
345 |
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* |
346 |
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* returns: (see #defines) |
347 |
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*/ |
348 |
|
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int |
349 |
|
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hunt_server(struct Client *client_p, struct Client *source_p, const char *command, |
350 |
|
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int server, int parc, char *parv[]) |
351 |
|
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{ |
352 |
|
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struct Client *target_p = NULL; |
353 |
|
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struct Client *target_tmp = NULL; |
354 |
|
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dlink_node *ptr; |
355 |
|
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int wilds; |
356 |
|
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|
357 |
|
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/* Assume it's me, if no server |
358 |
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*/ |
359 |
|
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if (parc <= server || EmptyString(parv[server]) || |
360 |
|
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match(me.name, parv[server]) || |
361 |
|
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match(parv[server], me.name) || |
362 |
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!strcmp(parv[server], me.id)) |
363 |
|
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return(HUNTED_ISME); |
364 |
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|
365 |
|
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/* These are to pickup matches that would cause the following |
366 |
|
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* message to go in the wrong direction while doing quick fast |
367 |
|
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* non-matching lookups. |
368 |
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*/ |
369 |
|
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if (MyClient(source_p)) |
370 |
michael |
1169 |
target_p = hash_find_client(parv[server]); |
371 |
adx |
30 |
else |
372 |
|
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target_p = find_person(client_p, parv[server]); |
373 |
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374 |
|
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if (target_p) |
375 |
|
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if (target_p->from == source_p->from && !MyConnect(target_p)) |
376 |
|
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target_p = NULL; |
377 |
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|
378 |
michael |
1169 |
if (target_p == NULL && (target_p = hash_find_server(parv[server]))) |
379 |
adx |
30 |
if (target_p->from == source_p->from && !MyConnect(target_p)) |
380 |
|
|
target_p = NULL; |
381 |
|
|
|
382 |
|
|
collapse(parv[server]); |
383 |
|
|
wilds = (strchr(parv[server], '?') || strchr(parv[server], '*')); |
384 |
|
|
|
385 |
|
|
/* Again, if there are no wild cards involved in the server |
386 |
|
|
* name, use the hash lookup |
387 |
|
|
*/ |
388 |
|
|
if (target_p == NULL) |
389 |
|
|
{ |
390 |
|
|
if (!wilds) |
391 |
|
|
{ |
392 |
michael |
1169 |
if (!(target_p = hash_find_server(parv[server]))) |
393 |
adx |
30 |
{ |
394 |
|
|
sendto_one(source_p, form_str(ERR_NOSUCHSERVER), |
395 |
michael |
1234 |
me.name, source_p->name, parv[server]); |
396 |
adx |
30 |
return(HUNTED_NOSUCH); |
397 |
|
|
} |
398 |
|
|
} |
399 |
|
|
else |
400 |
|
|
{ |
401 |
|
|
DLINK_FOREACH(ptr, global_client_list.head) |
402 |
|
|
{ |
403 |
|
|
target_tmp = ptr->data; |
404 |
|
|
|
405 |
|
|
if (match(parv[server], target_tmp->name)) |
406 |
|
|
{ |
407 |
|
|
if (target_tmp->from == source_p->from && !MyConnect(target_tmp)) |
408 |
|
|
continue; |
409 |
|
|
target_p = ptr->data; |
410 |
|
|
|
411 |
|
|
if (IsRegistered(target_p) && (target_p != client_p)) |
412 |
|
|
break; |
413 |
|
|
} |
414 |
|
|
} |
415 |
|
|
} |
416 |
|
|
} |
417 |
|
|
|
418 |
|
|
if (target_p != NULL) |
419 |
|
|
{ |
420 |
|
|
if(!IsRegistered(target_p)) |
421 |
|
|
{ |
422 |
|
|
sendto_one(source_p, form_str(ERR_NOSUCHSERVER), |
423 |
michael |
1234 |
me.name, source_p->name, parv[server]); |
424 |
adx |
30 |
return HUNTED_NOSUCH; |
425 |
|
|
} |
426 |
|
|
|
427 |
|
|
if (IsMe(target_p) || MyClient(target_p)) |
428 |
|
|
return HUNTED_ISME; |
429 |
|
|
|
430 |
|
|
if (!match(target_p->name, parv[server])) |
431 |
|
|
parv[server] = target_p->name; |
432 |
|
|
|
433 |
|
|
/* This is a little kludgy but should work... */ |
434 |
|
|
if (IsClient(source_p) && |
435 |
|
|
((MyConnect(target_p) && IsCapable(target_p, CAP_TS6)) || |
436 |
|
|
(!MyConnect(target_p) && IsCapable(target_p->from, CAP_TS6)))) |
437 |
|
|
parv[0] = ID(source_p); |
438 |
|
|
|
439 |
|
|
sendto_one(target_p, command, parv[0], |
440 |
|
|
parv[1], parv[2], parv[3], parv[4], |
441 |
|
|
parv[5], parv[6], parv[7], parv[8]); |
442 |
|
|
return(HUNTED_PASS); |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
sendto_one(source_p, form_str(ERR_NOSUCHSERVER), |
446 |
michael |
1234 |
me.name, source_p->name, parv[server]); |
447 |
adx |
30 |
return(HUNTED_NOSUCH); |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
/* try_connections() |
451 |
|
|
* |
452 |
|
|
* inputs - void pointer which is not used |
453 |
|
|
* output - NONE |
454 |
|
|
* side effects - |
455 |
|
|
* scan through configuration and try new connections. |
456 |
|
|
* Returns the calendar time when the next call to this |
457 |
|
|
* function should be made latest. (No harm done if this |
458 |
|
|
* is called earlier or later...) |
459 |
|
|
*/ |
460 |
|
|
void |
461 |
|
|
try_connections(void *unused) |
462 |
|
|
{ |
463 |
|
|
dlink_node *ptr; |
464 |
|
|
struct ConfItem *conf; |
465 |
|
|
struct AccessItem *aconf; |
466 |
|
|
struct ClassItem *cltmp; |
467 |
|
|
int confrq; |
468 |
|
|
|
469 |
|
|
/* TODO: change this to set active flag to 0 when added to event! --Habeeb */ |
470 |
|
|
if (GlobalSetOptions.autoconn == 0) |
471 |
|
|
return; |
472 |
|
|
|
473 |
|
|
DLINK_FOREACH(ptr, server_items.head) |
474 |
|
|
{ |
475 |
|
|
conf = ptr->data; |
476 |
michael |
1013 |
aconf = map_to_conf(conf); |
477 |
adx |
30 |
|
478 |
|
|
/* Also when already connecting! (update holdtimes) --SRB |
479 |
|
|
*/ |
480 |
michael |
1013 |
if (!(aconf->status & CONF_SERVER) || !aconf->port || |
481 |
adx |
30 |
!(IsConfAllowAutoConn(aconf))) |
482 |
|
|
continue; |
483 |
|
|
|
484 |
michael |
1013 |
cltmp = map_to_conf(aconf->class_ptr); |
485 |
adx |
30 |
|
486 |
|
|
/* Skip this entry if the use of it is still on hold until |
487 |
|
|
* future. Otherwise handle this entry (and set it on hold |
488 |
|
|
* until next time). Will reset only hold times, if already |
489 |
|
|
* made one successfull connection... [this algorithm is |
490 |
|
|
* a bit fuzzy... -- msa >;) ] |
491 |
|
|
*/ |
492 |
|
|
if (aconf->hold > CurrentTime) |
493 |
|
|
continue; |
494 |
|
|
|
495 |
|
|
if (cltmp == NULL) |
496 |
|
|
confrq = DEFAULT_CONNECTFREQUENCY; |
497 |
|
|
else |
498 |
|
|
{ |
499 |
|
|
confrq = ConFreq(cltmp); |
500 |
|
|
if (confrq < MIN_CONN_FREQ ) |
501 |
|
|
confrq = MIN_CONN_FREQ; |
502 |
|
|
} |
503 |
|
|
|
504 |
|
|
aconf->hold = CurrentTime + confrq; |
505 |
|
|
|
506 |
|
|
/* Found a CONNECT config with port specified, scan clients |
507 |
|
|
* and see if this server is already connected? |
508 |
|
|
*/ |
509 |
michael |
1169 |
if (hash_find_server(conf->name) != NULL) |
510 |
adx |
30 |
continue; |
511 |
|
|
|
512 |
|
|
if (CurrUserCount(cltmp) < MaxTotal(cltmp)) |
513 |
|
|
{ |
514 |
|
|
/* Go to the end of the list, if not already last */ |
515 |
|
|
if (ptr->next != NULL) |
516 |
|
|
{ |
517 |
|
|
dlinkDelete(ptr, &server_items); |
518 |
|
|
dlinkAddTail(conf, &conf->node, &server_items); |
519 |
|
|
} |
520 |
|
|
|
521 |
|
|
if (find_servconn_in_progress(conf->name)) |
522 |
|
|
return; |
523 |
|
|
|
524 |
|
|
/* We used to only print this if serv_connect() actually |
525 |
|
|
* succeeded, but since comm_tcp_connect() can call the callback |
526 |
|
|
* immediately if there is an error, we were getting error messages |
527 |
|
|
* in the wrong order. SO, we just print out the activated line, |
528 |
|
|
* and let serv_connect() / serv_connect_callback() print an |
529 |
|
|
* error afterwards if it fails. |
530 |
|
|
* -- adrian |
531 |
|
|
*/ |
532 |
|
|
if (ConfigServerHide.hide_server_ips) |
533 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s activated.", |
534 |
|
|
conf->name); |
535 |
|
|
else |
536 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s[%s] activated.", |
537 |
|
|
conf->name, aconf->host); |
538 |
|
|
|
539 |
|
|
serv_connect(aconf, NULL); |
540 |
|
|
/* We connect only one at time... */ |
541 |
|
|
return; |
542 |
|
|
} |
543 |
|
|
} |
544 |
|
|
} |
545 |
|
|
|
546 |
|
|
int |
547 |
michael |
1115 |
valid_servname(const char *name) |
548 |
|
|
{ |
549 |
|
|
unsigned int length = 0; |
550 |
|
|
unsigned int dots = 0; |
551 |
|
|
const char *p = name; |
552 |
|
|
|
553 |
|
|
for (; *p; ++p) |
554 |
|
|
{ |
555 |
|
|
if (!IsServChar(*p)) |
556 |
michael |
1118 |
return 0; |
557 |
michael |
1115 |
|
558 |
|
|
++length; |
559 |
|
|
|
560 |
|
|
if (*p == '.') |
561 |
|
|
++dots; |
562 |
|
|
} |
563 |
|
|
|
564 |
michael |
1118 |
return dots != 0 && length <= HOSTLEN; |
565 |
michael |
1115 |
} |
566 |
|
|
|
567 |
|
|
int |
568 |
adx |
30 |
check_server(const char *name, struct Client *client_p, int cryptlink) |
569 |
|
|
{ |
570 |
|
|
dlink_node *ptr; |
571 |
|
|
struct ConfItem *conf = NULL; |
572 |
|
|
struct ConfItem *server_conf = NULL; |
573 |
|
|
struct AccessItem *server_aconf = NULL; |
574 |
|
|
struct AccessItem *aconf = NULL; |
575 |
|
|
int error = -1; |
576 |
|
|
|
577 |
|
|
assert(client_p != NULL); |
578 |
|
|
|
579 |
|
|
if (client_p == NULL) |
580 |
|
|
return(error); |
581 |
|
|
|
582 |
|
|
if (strlen(name) > HOSTLEN) |
583 |
|
|
return(-4); |
584 |
|
|
|
585 |
|
|
/* loop through looking for all possible connect items that might work */ |
586 |
|
|
DLINK_FOREACH(ptr, server_items.head) |
587 |
|
|
{ |
588 |
|
|
conf = ptr->data; |
589 |
michael |
1013 |
aconf = map_to_conf(conf); |
590 |
adx |
30 |
|
591 |
|
|
if (!match(name, conf->name)) |
592 |
|
|
continue; |
593 |
|
|
|
594 |
|
|
error = -3; |
595 |
|
|
|
596 |
|
|
/* XXX: Fix me for IPv6 */ |
597 |
|
|
/* XXX sockhost is the IPv4 ip as a string */ |
598 |
|
|
if (match(aconf->host, client_p->host) || |
599 |
|
|
match(aconf->host, client_p->sockhost)) |
600 |
|
|
{ |
601 |
|
|
error = -2; |
602 |
|
|
#ifdef HAVE_LIBCRYPTO |
603 |
|
|
if (cryptlink && IsConfCryptLink(aconf)) |
604 |
|
|
{ |
605 |
|
|
if (aconf->rsa_public_key) |
606 |
|
|
server_conf = conf; |
607 |
|
|
} |
608 |
|
|
else if (!(cryptlink || IsConfCryptLink(aconf))) |
609 |
|
|
#endif /* HAVE_LIBCRYPTO */ |
610 |
|
|
{ |
611 |
|
|
/* A NULL password is as good as a bad one */ |
612 |
|
|
if (EmptyString(client_p->localClient->passwd)) |
613 |
|
|
return(-2); |
614 |
|
|
|
615 |
|
|
/* code in s_conf.c should not have allowed this to be NULL */ |
616 |
|
|
if (aconf->passwd == NULL) |
617 |
|
|
return(-2); |
618 |
|
|
|
619 |
|
|
if (IsConfEncrypted(aconf)) |
620 |
|
|
{ |
621 |
|
|
if (strcmp(aconf->passwd, |
622 |
|
|
(const char *)crypt(client_p->localClient->passwd, |
623 |
|
|
aconf->passwd)) == 0) |
624 |
|
|
server_conf = conf; |
625 |
|
|
} |
626 |
|
|
else |
627 |
|
|
{ |
628 |
|
|
if (strcmp(aconf->passwd, client_p->localClient->passwd) == 0) |
629 |
|
|
server_conf = conf; |
630 |
|
|
} |
631 |
|
|
} |
632 |
|
|
} |
633 |
|
|
} |
634 |
|
|
|
635 |
|
|
if (server_conf == NULL) |
636 |
|
|
return(error); |
637 |
|
|
|
638 |
|
|
attach_conf(client_p, server_conf); |
639 |
|
|
|
640 |
|
|
/* Now find all leaf or hub config items for this server */ |
641 |
|
|
DLINK_FOREACH(ptr, hub_items.head) |
642 |
|
|
{ |
643 |
|
|
conf = ptr->data; |
644 |
|
|
|
645 |
|
|
if (!match(name, conf->name)) |
646 |
|
|
continue; |
647 |
|
|
attach_conf(client_p, conf); |
648 |
|
|
} |
649 |
|
|
|
650 |
|
|
DLINK_FOREACH(ptr, leaf_items.head) |
651 |
|
|
{ |
652 |
|
|
conf = ptr->data; |
653 |
|
|
|
654 |
|
|
if (!match(name, conf->name)) |
655 |
|
|
continue; |
656 |
|
|
attach_conf(client_p, conf); |
657 |
|
|
} |
658 |
|
|
|
659 |
michael |
885 |
server_aconf = map_to_conf(server_conf); |
660 |
adx |
30 |
|
661 |
|
|
#ifdef HAVE_LIBZ /* otherwise, clear it unconditionally */ |
662 |
|
|
if (!IsConfCompressed(server_aconf)) |
663 |
|
|
#endif |
664 |
|
|
ClearCap(client_p, CAP_ZIP); |
665 |
|
|
if (!IsConfCryptLink(server_aconf)) |
666 |
|
|
ClearCap(client_p, CAP_ENC); |
667 |
|
|
if (!IsConfTopicBurst(server_aconf)) |
668 |
michael |
329 |
{ |
669 |
adx |
30 |
ClearCap(client_p, CAP_TB); |
670 |
michael |
329 |
ClearCap(client_p, CAP_TBURST); |
671 |
|
|
} |
672 |
adx |
30 |
|
673 |
|
|
if (aconf != NULL) |
674 |
|
|
{ |
675 |
|
|
struct sockaddr_in *v4; |
676 |
|
|
#ifdef IPV6 |
677 |
|
|
struct sockaddr_in6 *v6; |
678 |
|
|
#endif |
679 |
|
|
switch (aconf->aftype) |
680 |
|
|
{ |
681 |
|
|
#ifdef IPV6 |
682 |
|
|
case AF_INET6: |
683 |
|
|
v6 = (struct sockaddr_in6 *)&aconf->ipnum; |
684 |
|
|
|
685 |
|
|
if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr)) |
686 |
|
|
memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr)); |
687 |
|
|
break; |
688 |
|
|
#endif |
689 |
|
|
case AF_INET: |
690 |
|
|
v4 = (struct sockaddr_in *)&aconf->ipnum; |
691 |
|
|
|
692 |
|
|
if (v4->sin_addr.s_addr == INADDR_NONE) |
693 |
|
|
memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr)); |
694 |
|
|
break; |
695 |
|
|
} |
696 |
|
|
} |
697 |
|
|
|
698 |
|
|
return(0); |
699 |
|
|
} |
700 |
|
|
|
701 |
|
|
/* add_capability() |
702 |
|
|
* |
703 |
|
|
* inputs - string name of CAPAB |
704 |
|
|
* - int flag of capability |
705 |
|
|
* output - NONE |
706 |
|
|
* side effects - Adds given capability name and bit mask to |
707 |
|
|
* current supported capabilities. This allows |
708 |
|
|
* modules to dynamically add or subtract their capability. |
709 |
|
|
*/ |
710 |
|
|
void |
711 |
|
|
add_capability(const char *capab_name, int cap_flag, int add_to_default) |
712 |
|
|
{ |
713 |
michael |
885 |
struct Capability *cap = MyMalloc(sizeof(*cap)); |
714 |
adx |
30 |
|
715 |
|
|
DupString(cap->name, capab_name); |
716 |
|
|
cap->cap = cap_flag; |
717 |
|
|
dlinkAdd(cap, &cap->node, &cap_list); |
718 |
michael |
885 |
|
719 |
adx |
30 |
if (add_to_default) |
720 |
|
|
default_server_capabs |= cap_flag; |
721 |
|
|
} |
722 |
|
|
|
723 |
|
|
/* delete_capability() |
724 |
|
|
* |
725 |
|
|
* inputs - string name of CAPAB |
726 |
|
|
* output - NONE |
727 |
|
|
* side effects - delete given capability from ones known. |
728 |
|
|
*/ |
729 |
|
|
int |
730 |
|
|
delete_capability(const char *capab_name) |
731 |
|
|
{ |
732 |
|
|
dlink_node *ptr; |
733 |
|
|
dlink_node *next_ptr; |
734 |
|
|
struct Capability *cap; |
735 |
|
|
|
736 |
|
|
DLINK_FOREACH_SAFE(ptr, next_ptr, cap_list.head) |
737 |
|
|
{ |
738 |
|
|
cap = ptr->data; |
739 |
|
|
|
740 |
|
|
if (cap->cap != 0) |
741 |
|
|
{ |
742 |
|
|
if (irccmp(cap->name, capab_name) == 0) |
743 |
|
|
{ |
744 |
|
|
default_server_capabs &= ~(cap->cap); |
745 |
|
|
dlinkDelete(ptr, &cap_list); |
746 |
|
|
MyFree(cap->name); |
747 |
|
|
cap->name = NULL; |
748 |
|
|
MyFree(cap); |
749 |
|
|
} |
750 |
|
|
} |
751 |
|
|
} |
752 |
|
|
|
753 |
michael |
896 |
return 0; |
754 |
adx |
30 |
} |
755 |
|
|
|
756 |
|
|
/* |
757 |
|
|
* find_capability() |
758 |
|
|
* |
759 |
|
|
* inputs - string name of capab to find |
760 |
|
|
* output - 0 if not found CAPAB otherwise |
761 |
|
|
* side effects - none |
762 |
|
|
*/ |
763 |
|
|
int |
764 |
|
|
find_capability(const char *capab) |
765 |
|
|
{ |
766 |
michael |
896 |
const dlink_node *ptr = NULL; |
767 |
adx |
30 |
|
768 |
|
|
DLINK_FOREACH(ptr, cap_list.head) |
769 |
|
|
{ |
770 |
michael |
896 |
const struct Capability *cap = ptr->data; |
771 |
adx |
30 |
|
772 |
michael |
896 |
if (cap->cap && !irccmp(cap->name, capab)) |
773 |
|
|
return cap->cap; |
774 |
adx |
30 |
} |
775 |
michael |
896 |
|
776 |
|
|
return 0; |
777 |
adx |
30 |
} |
778 |
|
|
|
779 |
|
|
/* send_capabilities() |
780 |
|
|
* |
781 |
|
|
* inputs - Client pointer to send to |
782 |
|
|
* - Pointer to AccessItem (for crypt) |
783 |
|
|
* - int flag of capabilities that this server can send |
784 |
|
|
* - int flag of encryption capabilities |
785 |
|
|
* output - NONE |
786 |
|
|
* side effects - send the CAPAB line to a server -orabidoo |
787 |
|
|
* |
788 |
|
|
*/ |
789 |
|
|
void |
790 |
|
|
send_capabilities(struct Client *client_p, struct AccessItem *aconf, |
791 |
|
|
int cap_can_send, int enc_can_send) |
792 |
|
|
{ |
793 |
|
|
struct Capability *cap=NULL; |
794 |
|
|
char msgbuf[IRCD_BUFSIZE]; |
795 |
|
|
char *t; |
796 |
|
|
int tl; |
797 |
|
|
dlink_node *ptr; |
798 |
|
|
#ifdef HAVE_LIBCRYPTO |
799 |
michael |
319 |
const struct EncCapability *epref = NULL; |
800 |
adx |
30 |
char *capend; |
801 |
|
|
int sent_cipher = 0; |
802 |
|
|
#endif |
803 |
|
|
|
804 |
|
|
t = msgbuf; |
805 |
|
|
|
806 |
|
|
DLINK_FOREACH(ptr, cap_list.head) |
807 |
|
|
{ |
808 |
|
|
cap = ptr->data; |
809 |
|
|
|
810 |
|
|
if (cap->cap & (cap_can_send|default_server_capabs)) |
811 |
|
|
{ |
812 |
|
|
tl = ircsprintf(t, "%s ", cap->name); |
813 |
|
|
t += tl; |
814 |
|
|
} |
815 |
|
|
} |
816 |
|
|
#ifdef HAVE_LIBCRYPTO |
817 |
|
|
if (enc_can_send) |
818 |
|
|
{ |
819 |
|
|
capend = t; |
820 |
|
|
strcpy(t, "ENC:"); |
821 |
|
|
t += 4; |
822 |
|
|
|
823 |
|
|
/* use connect{} specific info if available */ |
824 |
|
|
if (aconf->cipher_preference) |
825 |
|
|
epref = aconf->cipher_preference; |
826 |
michael |
319 |
else if (ConfigFileEntry.default_cipher_preference) |
827 |
adx |
30 |
epref = ConfigFileEntry.default_cipher_preference; |
828 |
|
|
|
829 |
michael |
319 |
if (epref && (epref->cap & enc_can_send)) |
830 |
adx |
30 |
{ |
831 |
|
|
/* Leave the space -- it is removed later. */ |
832 |
|
|
tl = ircsprintf(t, "%s ", epref->name); |
833 |
|
|
t += tl; |
834 |
|
|
sent_cipher = 1; |
835 |
|
|
} |
836 |
|
|
|
837 |
|
|
if (!sent_cipher) |
838 |
|
|
t = capend; /* truncate string before ENC:, below */ |
839 |
|
|
} |
840 |
|
|
#endif |
841 |
michael |
319 |
*(t - 1) = '\0'; |
842 |
adx |
30 |
sendto_one(client_p, "CAPAB :%s", msgbuf); |
843 |
|
|
} |
844 |
|
|
|
845 |
|
|
/* sendnick_TS() |
846 |
|
|
* |
847 |
|
|
* inputs - client (server) to send nick towards |
848 |
adx |
386 |
* - client to send nick for |
849 |
adx |
30 |
* output - NONE |
850 |
|
|
* side effects - NICK message is sent towards given client_p |
851 |
|
|
*/ |
852 |
|
|
void |
853 |
|
|
sendnick_TS(struct Client *client_p, struct Client *target_p) |
854 |
|
|
{ |
855 |
|
|
static char ubuf[12]; |
856 |
|
|
|
857 |
|
|
if (!IsClient(target_p)) |
858 |
|
|
return; |
859 |
|
|
|
860 |
michael |
1219 |
send_umode(NULL, target_p, 0, HasOFlag(target_p, OPER_FLAG_HIDDEN_ADMIN) ? |
861 |
adx |
30 |
SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, ubuf); |
862 |
|
|
|
863 |
|
|
if (ubuf[0] == '\0') |
864 |
|
|
{ |
865 |
|
|
ubuf[0] = '+'; |
866 |
|
|
ubuf[1] = '\0'; |
867 |
|
|
} |
868 |
|
|
|
869 |
|
|
/* XXX Both of these need to have a :me.name or :mySID!?!?! */ |
870 |
michael |
1196 |
if (IsCapable(client_p, CAP_SVS)) |
871 |
|
|
{ |
872 |
|
|
if (HasID(target_p) && IsCapable(client_p, CAP_TS6)) |
873 |
|
|
sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %lu :%s", |
874 |
|
|
target_p->servptr->id, |
875 |
|
|
target_p->name, target_p->hopcount + 1, |
876 |
|
|
(unsigned long) target_p->tsinfo, |
877 |
|
|
ubuf, target_p->username, target_p->host, |
878 |
|
|
(MyClient(target_p) && IsIPSpoof(target_p)) ? |
879 |
|
|
"0" : target_p->sockhost, target_p->id, |
880 |
|
|
(unsigned long)target_p->servicestamp, target_p->info); |
881 |
|
|
else |
882 |
|
|
sendto_one(client_p, "NICK %s %d %lu %s %s %s %s %lu :%s", |
883 |
|
|
target_p->name, target_p->hopcount + 1, |
884 |
|
|
(unsigned long) target_p->tsinfo, |
885 |
|
|
ubuf, target_p->username, target_p->host, |
886 |
|
|
target_p->servptr->name, (unsigned long)target_p->servicestamp, |
887 |
|
|
target_p->info); |
888 |
|
|
} |
889 |
adx |
30 |
else |
890 |
michael |
1196 |
{ |
891 |
|
|
if (HasID(target_p) && IsCapable(client_p, CAP_TS6)) |
892 |
|
|
sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s", |
893 |
|
|
target_p->servptr->id, |
894 |
|
|
target_p->name, target_p->hopcount + 1, |
895 |
|
|
(unsigned long) target_p->tsinfo, |
896 |
|
|
ubuf, target_p->username, target_p->host, |
897 |
|
|
(MyClient(target_p) && IsIPSpoof(target_p)) ? |
898 |
|
|
"0" : target_p->sockhost, target_p->id, target_p->info); |
899 |
|
|
else |
900 |
|
|
sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s", |
901 |
|
|
target_p->name, target_p->hopcount + 1, |
902 |
|
|
(unsigned long) target_p->tsinfo, |
903 |
|
|
ubuf, target_p->username, target_p->host, |
904 |
|
|
target_p->servptr->name, target_p->info); |
905 |
|
|
} |
906 |
adx |
386 |
|
907 |
adx |
30 |
if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->serv->sconf))) |
908 |
|
|
if (!EmptyString(target_p->away)) |
909 |
|
|
sendto_one(client_p, ":%s AWAY :%s", target_p->name, |
910 |
|
|
target_p->away); |
911 |
|
|
|
912 |
|
|
} |
913 |
|
|
|
914 |
|
|
/* |
915 |
|
|
* show_capabilities - show current server capabilities |
916 |
|
|
* |
917 |
|
|
* inputs - pointer to a struct Client |
918 |
|
|
* output - pointer to static string |
919 |
|
|
* side effects - build up string representing capabilities of server listed |
920 |
|
|
*/ |
921 |
|
|
const char * |
922 |
|
|
show_capabilities(struct Client *target_p) |
923 |
|
|
{ |
924 |
|
|
static char msgbuf[IRCD_BUFSIZE]; |
925 |
|
|
char *t = msgbuf; |
926 |
|
|
dlink_node *ptr; |
927 |
|
|
|
928 |
|
|
t += ircsprintf(msgbuf, "TS "); |
929 |
|
|
|
930 |
|
|
DLINK_FOREACH(ptr, cap_list.head) |
931 |
|
|
{ |
932 |
|
|
const struct Capability *cap = ptr->data; |
933 |
|
|
|
934 |
|
|
if (IsCapable(target_p, cap->cap)) |
935 |
|
|
t += ircsprintf(t, "%s ", cap->name); |
936 |
|
|
} |
937 |
|
|
#ifdef HAVE_LIBCRYPTO |
938 |
|
|
if (IsCapable(target_p, CAP_ENC) && |
939 |
|
|
target_p->localClient->in_cipher && |
940 |
|
|
target_p->localClient->out_cipher) |
941 |
|
|
t += ircsprintf(t, "ENC:%s ", |
942 |
|
|
target_p->localClient->in_cipher->name); |
943 |
|
|
#endif |
944 |
|
|
*(t - 1) = '\0'; |
945 |
|
|
|
946 |
|
|
return(msgbuf); |
947 |
|
|
} |
948 |
|
|
|
949 |
|
|
/* make_server() |
950 |
|
|
* |
951 |
|
|
* inputs - pointer to client struct |
952 |
|
|
* output - pointer to struct Server |
953 |
|
|
* side effects - add's an Server information block to a client |
954 |
|
|
* if it was not previously allocated. |
955 |
|
|
*/ |
956 |
|
|
struct Server * |
957 |
|
|
make_server(struct Client *client_p) |
958 |
|
|
{ |
959 |
|
|
if (client_p->serv == NULL) |
960 |
|
|
client_p->serv = MyMalloc(sizeof(struct Server)); |
961 |
|
|
|
962 |
|
|
return client_p->serv; |
963 |
|
|
} |
964 |
|
|
|
965 |
|
|
/* server_estab() |
966 |
|
|
* |
967 |
|
|
* inputs - pointer to a struct Client |
968 |
|
|
* output - |
969 |
|
|
* side effects - |
970 |
|
|
*/ |
971 |
|
|
void |
972 |
|
|
server_estab(struct Client *client_p) |
973 |
|
|
{ |
974 |
|
|
struct Client *target_p; |
975 |
|
|
struct ConfItem *conf; |
976 |
|
|
struct AccessItem *aconf=NULL; |
977 |
|
|
char *host; |
978 |
|
|
const char *inpath; |
979 |
|
|
static char inpath_ip[HOSTLEN * 2 + USERLEN + 6]; |
980 |
|
|
dlink_node *ptr; |
981 |
|
|
|
982 |
|
|
assert(client_p != NULL); |
983 |
|
|
|
984 |
|
|
strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip)); |
985 |
|
|
|
986 |
|
|
inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */ |
987 |
|
|
host = client_p->name; |
988 |
|
|
|
989 |
|
|
if ((conf = find_conf_name(&client_p->localClient->confs, host, SERVER_TYPE)) |
990 |
|
|
== NULL) |
991 |
|
|
{ |
992 |
|
|
/* This shouldn't happen, better tell the ops... -A1kmm */ |
993 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, "Warning: Lost connect{} block " |
994 |
|
|
"for server %s(this shouldn't happen)!", host); |
995 |
|
|
exit_client(client_p, &me, "Lost connect{} block!"); |
996 |
|
|
return; |
997 |
|
|
} |
998 |
|
|
|
999 |
|
|
MyFree(client_p->localClient->passwd); |
1000 |
|
|
client_p->localClient->passwd = NULL; |
1001 |
|
|
|
1002 |
|
|
/* Its got identd, since its a server */ |
1003 |
|
|
SetGotId(client_p); |
1004 |
|
|
|
1005 |
|
|
/* If there is something in the serv_list, it might be this |
1006 |
|
|
* connecting server.. |
1007 |
|
|
*/ |
1008 |
|
|
if (!ServerInfo.hub && serv_list.head) |
1009 |
|
|
{ |
1010 |
|
|
if (client_p != serv_list.head->data || serv_list.head->next) |
1011 |
|
|
{ |
1012 |
michael |
896 |
++ServerStats.is_ref; |
1013 |
adx |
30 |
sendto_one(client_p, "ERROR :I'm a leaf not a hub"); |
1014 |
|
|
exit_client(client_p, &me, "I'm a leaf"); |
1015 |
|
|
return; |
1016 |
|
|
} |
1017 |
|
|
} |
1018 |
|
|
|
1019 |
michael |
1115 |
aconf = map_to_conf(conf); |
1020 |
adx |
30 |
|
1021 |
|
|
if (IsUnknown(client_p) && !IsConfCryptLink(aconf)) |
1022 |
|
|
{ |
1023 |
|
|
/* jdc -- 1. Use EmptyString(), not [0] index reference. |
1024 |
|
|
* 2. Check aconf->spasswd, not aconf->passwd. |
1025 |
|
|
*/ |
1026 |
|
|
if (!EmptyString(aconf->spasswd)) |
1027 |
michael |
1115 |
sendto_one(client_p, "PASS %s TS %d %s", |
1028 |
|
|
aconf->spasswd, TS_CURRENT, me.id); |
1029 |
adx |
30 |
|
1030 |
|
|
/* Pass my info to the new server |
1031 |
|
|
* |
1032 |
|
|
* Pass on ZIP if supported |
1033 |
|
|
* Pass on TB if supported. |
1034 |
|
|
* - Dianora |
1035 |
|
|
*/ |
1036 |
|
|
|
1037 |
michael |
1119 |
send_capabilities(client_p, aconf, |
1038 |
|
|
(IsConfCompressed(aconf) ? CAP_ZIP : 0) |
1039 |
michael |
329 |
| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), 0); |
1040 |
adx |
30 |
|
1041 |
|
|
/* SERVER is the last command sent before switching to ziplinks. |
1042 |
|
|
* We set TCPNODELAY on the socket to make sure it gets sent out |
1043 |
|
|
* on the wire immediately. Otherwise, it could be sitting in |
1044 |
|
|
* a kernel buffer when we start sending zipped data, and the |
1045 |
|
|
* parser on the receiving side can't hand both unzipped and zipped |
1046 |
|
|
* data in one packet. --Rodder |
1047 |
|
|
* |
1048 |
|
|
* currently we only need to call send_queued_write, |
1049 |
|
|
* Nagle is already disabled at this point --adx |
1050 |
|
|
*/ |
1051 |
|
|
sendto_one(client_p, "SERVER %s 1 :%s%s", |
1052 |
michael |
1118 |
me.name, ConfigServerHide.hidden ? "(H) " : "", me.info); |
1053 |
adx |
30 |
send_queued_write(client_p); |
1054 |
|
|
} |
1055 |
|
|
|
1056 |
|
|
/* Hand the server off to servlink now */ |
1057 |
|
|
if (IsCapable(client_p, CAP_ENC) || IsCapable(client_p, CAP_ZIP)) |
1058 |
|
|
{ |
1059 |
|
|
if (fork_server(client_p) < 0) |
1060 |
|
|
{ |
1061 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1062 |
|
|
"Warning: fork failed for server %s -- check servlink_path (%s)", |
1063 |
|
|
get_client_name(client_p, HIDE_IP), ConfigFileEntry.servlink_path); |
1064 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, "Warning: fork failed for server " |
1065 |
|
|
"%s -- check servlink_path (%s)", |
1066 |
|
|
get_client_name(client_p, MASK_IP), |
1067 |
|
|
ConfigFileEntry.servlink_path); |
1068 |
|
|
exit_client(client_p, &me, "fork failed"); |
1069 |
|
|
return; |
1070 |
|
|
} |
1071 |
|
|
|
1072 |
|
|
start_io(client_p); |
1073 |
|
|
SetServlink(client_p); |
1074 |
|
|
} |
1075 |
|
|
|
1076 |
michael |
1115 |
sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN, |
1077 |
adx |
30 |
(unsigned long)CurrentTime); |
1078 |
|
|
|
1079 |
|
|
/* assumption here is if they passed the correct TS version, they also passed an SID */ |
1080 |
|
|
if (IsCapable(client_p, CAP_TS6)) |
1081 |
|
|
hash_add_id(client_p); |
1082 |
|
|
|
1083 |
|
|
/* XXX Does this ever happen? I don't think so -db */ |
1084 |
|
|
detach_conf(client_p, OPER_TYPE); |
1085 |
|
|
|
1086 |
|
|
/* *WARNING* |
1087 |
|
|
** In the following code in place of plain server's |
1088 |
|
|
** name we send what is returned by get_client_name |
1089 |
|
|
** which may add the "sockhost" after the name. It's |
1090 |
|
|
** *very* *important* that there is a SPACE between |
1091 |
|
|
** the name and sockhost (if present). The receiving |
1092 |
|
|
** server will start the information field from this |
1093 |
|
|
** first blank and thus puts the sockhost into info. |
1094 |
|
|
** ...a bit tricky, but you have been warned, besides |
1095 |
|
|
** code is more neat this way... --msa |
1096 |
|
|
*/ |
1097 |
|
|
client_p->servptr = &me; |
1098 |
|
|
|
1099 |
|
|
if (IsClosing(client_p)) |
1100 |
|
|
return; |
1101 |
|
|
|
1102 |
|
|
SetServer(client_p); |
1103 |
|
|
|
1104 |
|
|
/* Update the capability combination usage counts. -A1kmm */ |
1105 |
|
|
set_chcap_usage_counts(client_p); |
1106 |
|
|
|
1107 |
|
|
/* Some day, all these lists will be consolidated *sigh* */ |
1108 |
michael |
889 |
dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list); |
1109 |
adx |
30 |
|
1110 |
michael |
1126 |
assert(dlinkFind(&unknown_list, client_p)); |
1111 |
adx |
30 |
|
1112 |
michael |
1126 |
dlink_move_node(&client_p->localClient->lclient_node, |
1113 |
|
|
&unknown_list, &serv_list); |
1114 |
adx |
30 |
|
1115 |
|
|
Count.myserver++; |
1116 |
|
|
|
1117 |
|
|
dlinkAdd(client_p, make_dlink_node(), &global_serv_list); |
1118 |
|
|
hash_add_client(client_p); |
1119 |
|
|
|
1120 |
|
|
/* doesnt duplicate client_p->serv if allocated this struct already */ |
1121 |
|
|
make_server(client_p); |
1122 |
|
|
|
1123 |
|
|
/* fixing eob timings.. -gnp */ |
1124 |
michael |
1241 |
client_p->localClient->firsttime = CurrentTime; |
1125 |
adx |
30 |
|
1126 |
michael |
1157 |
|
1127 |
|
|
if (find_matching_name_conf(SERVICE_TYPE, client_p->name, NULL, NULL, 0)) |
1128 |
michael |
1219 |
AddFlag(client_p, FLAGS_SERVICE); |
1129 |
michael |
1157 |
|
1130 |
adx |
30 |
/* Show the real host/IP to admins */ |
1131 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1132 |
|
|
"Link with %s established: (%s) link", |
1133 |
|
|
inpath_ip,show_capabilities(client_p)); |
1134 |
|
|
/* Now show the masked hostname/IP to opers */ |
1135 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, |
1136 |
|
|
"Link with %s established: (%s) link", |
1137 |
|
|
inpath,show_capabilities(client_p)); |
1138 |
|
|
ilog(L_NOTICE, "Link with %s established: (%s) link", |
1139 |
|
|
inpath_ip, show_capabilities(client_p)); |
1140 |
|
|
|
1141 |
|
|
client_p->serv->sconf = conf; |
1142 |
|
|
|
1143 |
|
|
if (HasServlink(client_p)) |
1144 |
|
|
{ |
1145 |
|
|
/* we won't overflow FD_DESC_SZ here, as it can hold |
1146 |
|
|
* client_p->name + 64 |
1147 |
|
|
*/ |
1148 |
|
|
fd_note(&client_p->localClient->fd, "slink data: %s", client_p->name); |
1149 |
|
|
fd_note(&client_p->localClient->ctrlfd, "slink ctrl: %s", client_p->name); |
1150 |
|
|
} |
1151 |
|
|
else |
1152 |
|
|
fd_note(&client_p->localClient->fd, "Server: %s", client_p->name); |
1153 |
|
|
|
1154 |
|
|
/* Old sendto_serv_but_one() call removed because we now |
1155 |
|
|
** need to send different names to different servers |
1156 |
|
|
** (domain name matching) Send new server to other servers. |
1157 |
|
|
*/ |
1158 |
|
|
DLINK_FOREACH(ptr, serv_list.head) |
1159 |
|
|
{ |
1160 |
|
|
target_p = ptr->data; |
1161 |
|
|
|
1162 |
|
|
if (target_p == client_p) |
1163 |
|
|
continue; |
1164 |
|
|
|
1165 |
|
|
if (IsCapable(target_p, CAP_TS6) && HasID(client_p)) |
1166 |
|
|
sendto_one(target_p, ":%s SID %s 2 %s :%s%s", |
1167 |
|
|
me.id, client_p->name, client_p->id, |
1168 |
|
|
IsHidden(client_p) ? "(H) " : "", |
1169 |
|
|
client_p->info); |
1170 |
|
|
else |
1171 |
|
|
sendto_one(target_p,":%s SERVER %s 2 :%s%s", |
1172 |
|
|
me.name, client_p->name, |
1173 |
|
|
IsHidden(client_p) ? "(H) " : "", |
1174 |
|
|
client_p->info); |
1175 |
|
|
} |
1176 |
|
|
|
1177 |
|
|
/* Pass on my client information to the new server |
1178 |
|
|
** |
1179 |
|
|
** First, pass only servers (idea is that if the link gets |
1180 |
|
|
** cancelled beacause the server was already there, |
1181 |
|
|
** there are no NICK's to be cancelled...). Of course, |
1182 |
|
|
** if cancellation occurs, all this info is sent anyway, |
1183 |
|
|
** and I guess the link dies when a read is attempted...? --msa |
1184 |
|
|
** |
1185 |
|
|
** Note: Link cancellation to occur at this point means |
1186 |
|
|
** that at least two servers from my fragment are building |
1187 |
|
|
** up connection this other fragment at the same time, it's |
1188 |
|
|
** a race condition, not the normal way of operation... |
1189 |
|
|
** |
1190 |
|
|
** ALSO NOTE: using the get_client_name for server names-- |
1191 |
|
|
** see previous *WARNING*!!! (Also, original inpath |
1192 |
|
|
** is destroyed...) |
1193 |
|
|
*/ |
1194 |
|
|
|
1195 |
|
|
DLINK_FOREACH_PREV(ptr, global_serv_list.tail) |
1196 |
|
|
{ |
1197 |
|
|
target_p = ptr->data; |
1198 |
|
|
|
1199 |
|
|
/* target_p->from == target_p for target_p == client_p */ |
1200 |
michael |
1118 |
if (IsMe(target_p) || target_p->from == client_p) |
1201 |
adx |
30 |
continue; |
1202 |
|
|
|
1203 |
|
|
if (IsCapable(client_p, CAP_TS6)) |
1204 |
|
|
{ |
1205 |
|
|
if (HasID(target_p)) |
1206 |
|
|
sendto_one(client_p, ":%s SID %s %d %s :%s%s", |
1207 |
|
|
ID(target_p->servptr), target_p->name, target_p->hopcount+1, |
1208 |
|
|
target_p->id, IsHidden(target_p) ? "(H) " : "", |
1209 |
|
|
target_p->info); |
1210 |
|
|
else /* introducing non-ts6 server */ |
1211 |
|
|
sendto_one(client_p, ":%s SERVER %s %d :%s%s", |
1212 |
|
|
ID(target_p->servptr), target_p->name, target_p->hopcount+1, |
1213 |
|
|
IsHidden(target_p) ? "(H) " : "", target_p->info); |
1214 |
|
|
} |
1215 |
|
|
else |
1216 |
|
|
sendto_one(client_p, ":%s SERVER %s %d :%s%s", |
1217 |
|
|
target_p->servptr->name, target_p->name, target_p->hopcount+1, |
1218 |
|
|
IsHidden(target_p) ? "(H) " : "", target_p->info); |
1219 |
|
|
} |
1220 |
|
|
|
1221 |
|
|
server_burst(client_p); |
1222 |
|
|
} |
1223 |
|
|
|
1224 |
|
|
static void |
1225 |
|
|
start_io(struct Client *server) |
1226 |
|
|
{ |
1227 |
|
|
struct LocalUser *lserver = server->localClient; |
1228 |
|
|
int alloclen = 1; |
1229 |
|
|
char *buf; |
1230 |
|
|
dlink_node *ptr; |
1231 |
|
|
struct dbuf_block *block; |
1232 |
|
|
|
1233 |
|
|
/* calculate how many bytes to allocate */ |
1234 |
|
|
if (IsCapable(server, CAP_ZIP)) |
1235 |
|
|
alloclen += 6; |
1236 |
|
|
#ifdef HAVE_LIBCRYPTO |
1237 |
|
|
if (IsCapable(server, CAP_ENC)) |
1238 |
|
|
alloclen += 16 + lserver->in_cipher->keylen + lserver->out_cipher->keylen; |
1239 |
|
|
#endif |
1240 |
|
|
alloclen += dbuf_length(&lserver->buf_recvq); |
1241 |
|
|
alloclen += dlink_list_length(&lserver->buf_recvq.blocks) * 3; |
1242 |
|
|
alloclen += dbuf_length(&lserver->buf_sendq); |
1243 |
|
|
alloclen += dlink_list_length(&lserver->buf_sendq.blocks) * 3; |
1244 |
|
|
|
1245 |
|
|
/* initialize servlink control sendq */ |
1246 |
|
|
lserver->slinkq = buf = MyMalloc(alloclen); |
1247 |
|
|
lserver->slinkq_ofs = 0; |
1248 |
|
|
lserver->slinkq_len = alloclen; |
1249 |
|
|
|
1250 |
|
|
if (IsCapable(server, CAP_ZIP)) |
1251 |
|
|
{ |
1252 |
|
|
/* ziplink */ |
1253 |
|
|
*buf++ = SLINKCMD_SET_ZIP_OUT_LEVEL; |
1254 |
|
|
*buf++ = 0; /* | */ |
1255 |
|
|
*buf++ = 1; /* \ len is 1 */ |
1256 |
|
|
*buf++ = ConfigFileEntry.compression_level; |
1257 |
|
|
*buf++ = SLINKCMD_START_ZIP_IN; |
1258 |
|
|
*buf++ = SLINKCMD_START_ZIP_OUT; |
1259 |
|
|
} |
1260 |
|
|
#ifdef HAVE_LIBCRYPTO |
1261 |
|
|
if (IsCapable(server, CAP_ENC)) |
1262 |
|
|
{ |
1263 |
|
|
/* Decryption settings */ |
1264 |
|
|
*buf++ = SLINKCMD_SET_CRYPT_IN_CIPHER; |
1265 |
|
|
*buf++ = 0; /* / (upper 8-bits of len) */ |
1266 |
|
|
*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */ |
1267 |
|
|
*buf++ = lserver->in_cipher->cipherid; |
1268 |
|
|
*buf++ = SLINKCMD_SET_CRYPT_IN_KEY; |
1269 |
|
|
*buf++ = 0; /* keylen < 256 */ |
1270 |
|
|
*buf++ = lserver->in_cipher->keylen; |
1271 |
|
|
memcpy(buf, lserver->in_key, lserver->in_cipher->keylen); |
1272 |
|
|
buf += lserver->in_cipher->keylen; |
1273 |
|
|
/* Encryption settings */ |
1274 |
|
|
*buf++ = SLINKCMD_SET_CRYPT_OUT_CIPHER; |
1275 |
|
|
*buf++ = 0; /* / (upper 8-bits of len) */ |
1276 |
|
|
*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */ |
1277 |
|
|
*buf++ = lserver->out_cipher->cipherid; |
1278 |
|
|
*buf++ = SLINKCMD_SET_CRYPT_OUT_KEY; |
1279 |
|
|
*buf++ = 0; /* keylen < 256 */ |
1280 |
|
|
*buf++ = lserver->out_cipher->keylen; |
1281 |
|
|
memcpy(buf, lserver->out_key, lserver->out_cipher->keylen); |
1282 |
|
|
buf += lserver->out_cipher->keylen; |
1283 |
|
|
*buf++ = SLINKCMD_START_CRYPT_IN; |
1284 |
|
|
*buf++ = SLINKCMD_START_CRYPT_OUT; |
1285 |
|
|
} |
1286 |
|
|
#endif |
1287 |
|
|
|
1288 |
|
|
/* pass the whole recvq to servlink */ |
1289 |
|
|
DLINK_FOREACH (ptr, lserver->buf_recvq.blocks.head) |
1290 |
|
|
{ |
1291 |
|
|
block = ptr->data; |
1292 |
|
|
*buf++ = SLINKCMD_INJECT_RECVQ; |
1293 |
|
|
*buf++ = (block->size >> 8); |
1294 |
|
|
*buf++ = (block->size & 0xff); |
1295 |
|
|
memcpy(buf, &block->data[0], block->size); |
1296 |
|
|
buf += block->size; |
1297 |
|
|
} |
1298 |
michael |
329 |
|
1299 |
adx |
30 |
dbuf_clear(&lserver->buf_recvq); |
1300 |
|
|
|
1301 |
|
|
/* pass the whole sendq to servlink */ |
1302 |
|
|
DLINK_FOREACH (ptr, lserver->buf_sendq.blocks.head) |
1303 |
|
|
{ |
1304 |
|
|
block = ptr->data; |
1305 |
|
|
*buf++ = SLINKCMD_INJECT_SENDQ; |
1306 |
|
|
*buf++ = (block->size >> 8); |
1307 |
|
|
*buf++ = (block->size & 0xff); |
1308 |
|
|
memcpy(buf, &block->data[0], block->size); |
1309 |
|
|
buf += block->size; |
1310 |
|
|
} |
1311 |
michael |
329 |
|
1312 |
adx |
30 |
dbuf_clear(&lserver->buf_sendq); |
1313 |
|
|
|
1314 |
|
|
/* start io */ |
1315 |
|
|
*buf++ = SLINKCMD_INIT; |
1316 |
|
|
|
1317 |
|
|
/* schedule a write */ |
1318 |
|
|
send_queued_slink_write(server); |
1319 |
|
|
} |
1320 |
|
|
|
1321 |
|
|
/* fork_server() |
1322 |
|
|
* |
1323 |
|
|
* inputs - struct Client *server |
1324 |
|
|
* output - success: 0 / failure: -1 |
1325 |
|
|
* side effect - fork, and exec SERVLINK to handle this connection |
1326 |
|
|
*/ |
1327 |
|
|
static int |
1328 |
|
|
fork_server(struct Client *server) |
1329 |
|
|
{ |
1330 |
|
|
#ifndef HAVE_SOCKETPAIR |
1331 |
|
|
return -1; |
1332 |
|
|
#else |
1333 |
|
|
int i; |
1334 |
|
|
int slink_fds[2][2]; |
1335 |
|
|
/* 0? - ctrl | 1? - data |
1336 |
|
|
* ?0 - child | ?1 - parent */ |
1337 |
|
|
|
1338 |
|
|
if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[0]) < 0) |
1339 |
|
|
return -1; |
1340 |
|
|
if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[1]) < 0) |
1341 |
|
|
goto free_ctrl_fds; |
1342 |
|
|
|
1343 |
|
|
if ((i = fork()) < 0) |
1344 |
|
|
{ |
1345 |
|
|
close(slink_fds[1][0]); close(slink_fds[1][1]); |
1346 |
|
|
free_ctrl_fds: |
1347 |
|
|
close(slink_fds[0][0]); close(slink_fds[0][1]); |
1348 |
|
|
return -1; |
1349 |
|
|
} |
1350 |
|
|
|
1351 |
|
|
if (i == 0) |
1352 |
|
|
{ |
1353 |
|
|
char fd_str[3][6]; /* store 3x sizeof("65535") */ |
1354 |
|
|
char *kid_argv[7]; |
1355 |
|
|
|
1356 |
|
|
#ifdef O_ASYNC |
1357 |
|
|
fcntl(server->localClient->fd.fd, F_SETFL, |
1358 |
|
|
fcntl(server->localClient->fd.fd, F_GETFL, 0) & ~O_ASYNC); |
1359 |
|
|
#endif |
1360 |
|
|
close_fds(&server->localClient->fd); |
1361 |
|
|
close(slink_fds[0][1]); |
1362 |
|
|
close(slink_fds[1][1]); |
1363 |
|
|
|
1364 |
|
|
sprintf(fd_str[0], "%d", slink_fds[0][0]); |
1365 |
|
|
sprintf(fd_str[1], "%d", slink_fds[1][0]); |
1366 |
|
|
sprintf(fd_str[2], "%d", server->localClient->fd.fd); |
1367 |
|
|
|
1368 |
|
|
kid_argv[0] = "-slink"; |
1369 |
|
|
kid_argv[1] = kid_argv[2] = fd_str[0]; /* ctrl */ |
1370 |
|
|
kid_argv[3] = kid_argv[4] = fd_str[1]; /* data */ |
1371 |
|
|
kid_argv[5] = fd_str[2]; /* network */ |
1372 |
|
|
kid_argv[6] = NULL; |
1373 |
|
|
|
1374 |
|
|
execv(ConfigFileEntry.servlink_path, kid_argv); |
1375 |
|
|
|
1376 |
|
|
_exit(1); |
1377 |
|
|
} |
1378 |
|
|
|
1379 |
|
|
/* close the network fd and the child ends of the pipes */ |
1380 |
|
|
fd_close(&server->localClient->fd); |
1381 |
|
|
close(slink_fds[0][0]); |
1382 |
|
|
close(slink_fds[1][0]); |
1383 |
|
|
|
1384 |
|
|
execute_callback(setup_socket_cb, slink_fds[0][1]); |
1385 |
|
|
execute_callback(setup_socket_cb, slink_fds[1][1]); |
1386 |
|
|
|
1387 |
|
|
fd_open(&server->localClient->ctrlfd, slink_fds[0][1], 1, "slink ctrl"); |
1388 |
|
|
fd_open(&server->localClient->fd, slink_fds[1][1], 1, "slink data"); |
1389 |
|
|
|
1390 |
|
|
read_ctrl_packet(&server->localClient->ctrlfd, server); |
1391 |
|
|
read_packet(&server->localClient->fd, server); |
1392 |
|
|
|
1393 |
|
|
return 0; |
1394 |
|
|
#endif |
1395 |
|
|
} |
1396 |
|
|
|
1397 |
|
|
/* server_burst() |
1398 |
|
|
* |
1399 |
|
|
* inputs - struct Client pointer server |
1400 |
|
|
* - |
1401 |
|
|
* output - none |
1402 |
|
|
* side effects - send a server burst |
1403 |
|
|
* bugs - still too long |
1404 |
|
|
*/ |
1405 |
|
|
static void |
1406 |
|
|
server_burst(struct Client *client_p) |
1407 |
|
|
{ |
1408 |
|
|
/* Send it in the shortened format with the TS, if |
1409 |
|
|
** it's a TS server; walk the list of channels, sending |
1410 |
|
|
** all the nicks that haven't been sent yet for each |
1411 |
|
|
** channel, then send the channel itself -- it's less |
1412 |
|
|
** obvious than sending all nicks first, but on the |
1413 |
|
|
** receiving side memory will be allocated more nicely |
1414 |
|
|
** saving a few seconds in the handling of a split |
1415 |
|
|
** -orabidoo |
1416 |
|
|
*/ |
1417 |
|
|
|
1418 |
michael |
885 |
burst_all(client_p); |
1419 |
adx |
30 |
|
1420 |
|
|
/* EOB stuff is now in burst_all */ |
1421 |
|
|
/* Always send a PING after connect burst is done */ |
1422 |
|
|
sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p)); |
1423 |
|
|
} |
1424 |
|
|
|
1425 |
|
|
/* burst_all() |
1426 |
|
|
* |
1427 |
|
|
* inputs - pointer to server to send burst to |
1428 |
|
|
* output - NONE |
1429 |
|
|
* side effects - complete burst of channels/nicks is sent to client_p |
1430 |
|
|
*/ |
1431 |
|
|
static void |
1432 |
|
|
burst_all(struct Client *client_p) |
1433 |
|
|
{ |
1434 |
michael |
329 |
dlink_node *ptr = NULL; |
1435 |
adx |
30 |
|
1436 |
michael |
329 |
DLINK_FOREACH(ptr, global_channel_list.head) |
1437 |
adx |
30 |
{ |
1438 |
michael |
329 |
struct Channel *chptr = ptr->data; |
1439 |
adx |
30 |
|
1440 |
|
|
if (dlink_list_length(&chptr->members) != 0) |
1441 |
|
|
{ |
1442 |
|
|
burst_members(client_p, chptr); |
1443 |
|
|
send_channel_modes(client_p, chptr); |
1444 |
michael |
329 |
|
1445 |
|
|
if (IsCapable(client_p, CAP_TBURST) || |
1446 |
|
|
IsCapable(client_p, CAP_TB)) |
1447 |
adx |
30 |
send_tb(client_p, chptr); |
1448 |
|
|
} |
1449 |
|
|
} |
1450 |
|
|
|
1451 |
|
|
/* also send out those that are not on any channel |
1452 |
|
|
*/ |
1453 |
|
|
DLINK_FOREACH(ptr, global_client_list.head) |
1454 |
|
|
{ |
1455 |
michael |
329 |
struct Client *target_p = ptr->data; |
1456 |
adx |
30 |
|
1457 |
michael |
1219 |
if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p) |
1458 |
adx |
30 |
sendnick_TS(client_p, target_p); |
1459 |
|
|
|
1460 |
michael |
1219 |
DelFlag(target_p, FLAGS_BURSTED); |
1461 |
adx |
30 |
} |
1462 |
|
|
|
1463 |
|
|
/* We send the time we started the burst, and let the remote host determine an EOB time, |
1464 |
|
|
** as otherwise we end up sending a EOB of 0 Sending here means it gets sent last -- fl |
1465 |
|
|
*/ |
1466 |
|
|
/* Its simpler to just send EOB and use the time its been connected.. --fl_ */ |
1467 |
|
|
if (IsCapable(client_p, CAP_EOB)) |
1468 |
|
|
sendto_one(client_p, ":%s EOB", ID_or_name(&me, client_p)); |
1469 |
|
|
} |
1470 |
|
|
|
1471 |
|
|
/* |
1472 |
|
|
* send_tb |
1473 |
|
|
* |
1474 |
michael |
329 |
* inputs - pointer to Client |
1475 |
|
|
* - pointer to channel |
1476 |
|
|
* output - NONE |
1477 |
|
|
* side effects - Called on a server burst when |
1478 |
|
|
* server is CAP_TB|CAP_TBURST capable |
1479 |
adx |
30 |
*/ |
1480 |
|
|
static void |
1481 |
|
|
send_tb(struct Client *client_p, struct Channel *chptr) |
1482 |
|
|
{ |
1483 |
michael |
329 |
/* |
1484 |
michael |
337 |
* We may also send an empty topic here, but only if topic_time isn't 0, |
1485 |
|
|
* i.e. if we had a topic that got unset. This is required for syncing |
1486 |
|
|
* topics properly. |
1487 |
|
|
* |
1488 |
|
|
* Imagine the following scenario: Our downlink introduces a channel |
1489 |
|
|
* to us with a TS that is equal to ours, but the channel topic on |
1490 |
|
|
* their side got unset while the servers were in splitmode, which means |
1491 |
|
|
* their 'topic' is newer. They simply wanted to unset it, so we have to |
1492 |
|
|
* deal with it in a more sophisticated fashion instead of just resetting |
1493 |
|
|
* it to their old topic they had before. Read m_tburst.c:ms_tburst |
1494 |
|
|
* for further information -Michael |
1495 |
michael |
329 |
*/ |
1496 |
michael |
337 |
if (chptr->topic_time != 0) |
1497 |
adx |
30 |
{ |
1498 |
michael |
329 |
if (IsCapable(client_p, CAP_TBURST)) |
1499 |
|
|
sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s", |
1500 |
|
|
me.name, (unsigned long)chptr->channelts, chptr->chname, |
1501 |
michael |
337 |
(unsigned long)chptr->topic_time, |
1502 |
michael |
1203 |
chptr->topic_info, |
1503 |
|
|
chptr->topic); |
1504 |
michael |
329 |
else if (IsCapable(client_p, CAP_TB)) |
1505 |
adx |
30 |
{ |
1506 |
michael |
329 |
if (ConfigChannel.burst_topicwho) |
1507 |
|
|
{ |
1508 |
|
|
sendto_one(client_p, ":%s TB %s %lu %s :%s", |
1509 |
|
|
me.name, chptr->chname, |
1510 |
|
|
(unsigned long)chptr->topic_time, |
1511 |
michael |
1203 |
chptr->topic_info, chptr->topic); |
1512 |
michael |
329 |
} |
1513 |
|
|
else |
1514 |
|
|
{ |
1515 |
|
|
sendto_one(client_p, ":%s TB %s %lu :%s", |
1516 |
|
|
me.name, chptr->chname, |
1517 |
michael |
337 |
(unsigned long)chptr->topic_time, |
1518 |
michael |
1203 |
chptr->topic); |
1519 |
michael |
329 |
} |
1520 |
adx |
30 |
} |
1521 |
|
|
} |
1522 |
|
|
} |
1523 |
|
|
|
1524 |
|
|
/* burst_members() |
1525 |
|
|
* |
1526 |
|
|
* inputs - pointer to server to send members to |
1527 |
|
|
* - dlink_list pointer to membership list to send |
1528 |
|
|
* output - NONE |
1529 |
|
|
* side effects - |
1530 |
|
|
*/ |
1531 |
|
|
static void |
1532 |
|
|
burst_members(struct Client *client_p, struct Channel *chptr) |
1533 |
|
|
{ |
1534 |
|
|
struct Client *target_p; |
1535 |
|
|
struct Membership *ms; |
1536 |
|
|
dlink_node *ptr; |
1537 |
|
|
|
1538 |
|
|
DLINK_FOREACH(ptr, chptr->members.head) |
1539 |
|
|
{ |
1540 |
|
|
ms = ptr->data; |
1541 |
|
|
target_p = ms->client_p; |
1542 |
|
|
|
1543 |
michael |
1219 |
if (!HasFlag(target_p, FLAGS_BURSTED)) |
1544 |
adx |
30 |
{ |
1545 |
michael |
1219 |
AddFlag(target_p, FLAGS_BURSTED); |
1546 |
adx |
30 |
|
1547 |
|
|
if (target_p->from != client_p) |
1548 |
|
|
sendnick_TS(client_p, target_p); |
1549 |
|
|
} |
1550 |
|
|
} |
1551 |
|
|
} |
1552 |
|
|
|
1553 |
|
|
/* New server connection code |
1554 |
|
|
* Based upon the stuff floating about in s_bsd.c |
1555 |
|
|
* -- adrian |
1556 |
|
|
*/ |
1557 |
|
|
|
1558 |
|
|
/* serv_connect() - initiate a server connection |
1559 |
|
|
* |
1560 |
|
|
* inputs - pointer to conf |
1561 |
|
|
* - pointer to client doing the connect |
1562 |
|
|
* output - |
1563 |
|
|
* side effects - |
1564 |
|
|
* |
1565 |
|
|
* This code initiates a connection to a server. It first checks to make |
1566 |
|
|
* sure the given server exists. If this is the case, it creates a socket, |
1567 |
|
|
* creates a client, saves the socket information in the client, and |
1568 |
|
|
* initiates a connection to the server through comm_connect_tcp(). The |
1569 |
|
|
* completion of this goes through serv_completed_connection(). |
1570 |
|
|
* |
1571 |
|
|
* We return 1 if the connection is attempted, since we don't know whether |
1572 |
|
|
* it suceeded or not, and 0 if it fails in here somewhere. |
1573 |
|
|
*/ |
1574 |
|
|
int |
1575 |
|
|
serv_connect(struct AccessItem *aconf, struct Client *by) |
1576 |
|
|
{ |
1577 |
|
|
struct ConfItem *conf; |
1578 |
|
|
struct Client *client_p; |
1579 |
|
|
char buf[HOSTIPLEN]; |
1580 |
|
|
|
1581 |
|
|
/* conversion structs */ |
1582 |
|
|
struct sockaddr_in *v4; |
1583 |
|
|
/* Make sure aconf is useful */ |
1584 |
|
|
assert(aconf != NULL); |
1585 |
|
|
|
1586 |
|
|
if(aconf == NULL) |
1587 |
|
|
return (0); |
1588 |
|
|
|
1589 |
|
|
/* XXX should be passing struct ConfItem in the first place */ |
1590 |
|
|
conf = unmap_conf_item(aconf); |
1591 |
|
|
|
1592 |
|
|
/* log */ |
1593 |
michael |
1123 |
getnameinfo((struct sockaddr *)&aconf->ipnum, aconf->ipnum.ss_len, |
1594 |
|
|
buf, sizeof(buf), NULL, 0, NI_NUMERICHOST); |
1595 |
adx |
30 |
ilog(L_NOTICE, "Connect to %s[%s] @%s", aconf->user, aconf->host, |
1596 |
|
|
buf); |
1597 |
|
|
|
1598 |
|
|
/* Still processing a DNS lookup? -> exit */ |
1599 |
michael |
992 |
if (aconf->dns_pending) |
1600 |
adx |
30 |
{ |
1601 |
michael |
992 |
sendto_realops_flags(UMODE_ALL, L_ALL, |
1602 |
|
|
"Error connecting to %s: DNS lookup for connect{} in progress.", |
1603 |
|
|
conf->name); |
1604 |
adx |
30 |
return (0); |
1605 |
|
|
} |
1606 |
|
|
|
1607 |
michael |
992 |
if (aconf->dns_failed) |
1608 |
|
|
{ |
1609 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
1610 |
|
|
"Error connecting to %s: DNS lookup for connect{} failed.", |
1611 |
|
|
conf->name); |
1612 |
|
|
return (0); |
1613 |
|
|
} |
1614 |
|
|
|
1615 |
adx |
30 |
/* Make sure this server isn't already connected |
1616 |
|
|
* Note: aconf should ALWAYS be a valid C: line |
1617 |
|
|
*/ |
1618 |
michael |
1169 |
if ((client_p = hash_find_server(conf->name)) != NULL) |
1619 |
adx |
30 |
{ |
1620 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1621 |
|
|
"Server %s already present from %s", |
1622 |
|
|
conf->name, get_client_name(client_p, SHOW_IP)); |
1623 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, |
1624 |
|
|
"Server %s already present from %s", |
1625 |
|
|
conf->name, get_client_name(client_p, MASK_IP)); |
1626 |
|
|
if (by && IsClient(by) && !MyClient(by)) |
1627 |
|
|
sendto_one(by, ":%s NOTICE %s :Server %s already present from %s", |
1628 |
|
|
me.name, by->name, conf->name, |
1629 |
|
|
get_client_name(client_p, MASK_IP)); |
1630 |
|
|
return (0); |
1631 |
|
|
} |
1632 |
|
|
|
1633 |
|
|
/* Create a local client */ |
1634 |
|
|
client_p = make_client(NULL); |
1635 |
|
|
|
1636 |
|
|
/* Copy in the server, hostname, fd */ |
1637 |
|
|
strlcpy(client_p->name, conf->name, sizeof(client_p->name)); |
1638 |
|
|
strlcpy(client_p->host, aconf->host, sizeof(client_p->host)); |
1639 |
|
|
|
1640 |
|
|
/* We already converted the ip once, so lets use it - stu */ |
1641 |
michael |
1115 |
strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
1642 |
adx |
30 |
|
1643 |
|
|
/* create a socket for the server connection */ |
1644 |
|
|
if (comm_open(&client_p->localClient->fd, aconf->ipnum.ss.ss_family, |
1645 |
|
|
SOCK_STREAM, 0, NULL) < 0) |
1646 |
|
|
{ |
1647 |
|
|
/* Eek, failure to create the socket */ |
1648 |
|
|
report_error(L_ALL, |
1649 |
|
|
"opening stream socket to %s: %s", conf->name, errno); |
1650 |
|
|
SetDead(client_p); |
1651 |
|
|
exit_client(client_p, &me, "Connection failed"); |
1652 |
|
|
return (0); |
1653 |
|
|
} |
1654 |
|
|
|
1655 |
|
|
/* servernames are always guaranteed under HOSTLEN chars */ |
1656 |
|
|
fd_note(&client_p->localClient->fd, "Server: %s", conf->name); |
1657 |
|
|
|
1658 |
|
|
/* Attach config entries to client here rather than in |
1659 |
|
|
* serv_connect_callback(). This to avoid null pointer references. |
1660 |
|
|
*/ |
1661 |
|
|
if (!attach_connect_block(client_p, conf->name, aconf->host)) |
1662 |
|
|
{ |
1663 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, |
1664 |
|
|
"Host %s is not enabled for connecting:no C/N-line", |
1665 |
|
|
conf->name); |
1666 |
|
|
if (by && IsClient(by) && !MyClient(by)) |
1667 |
|
|
sendto_one(by, ":%s NOTICE %s :Connect to host %s failed.", |
1668 |
|
|
me.name, by->name, client_p->name); |
1669 |
|
|
SetDead(client_p); |
1670 |
|
|
exit_client(client_p, client_p, "Connection failed"); |
1671 |
|
|
return (0); |
1672 |
|
|
} |
1673 |
|
|
|
1674 |
|
|
/* at this point we have a connection in progress and C/N lines |
1675 |
|
|
* attached to the client, the socket info should be saved in the |
1676 |
|
|
* client and it should either be resolved or have a valid address. |
1677 |
|
|
* |
1678 |
|
|
* The socket has been connected or connect is in progress. |
1679 |
|
|
*/ |
1680 |
|
|
make_server(client_p); |
1681 |
|
|
|
1682 |
|
|
if (by && IsClient(by)) |
1683 |
|
|
strlcpy(client_p->serv->by, by->name, sizeof(client_p->serv->by)); |
1684 |
|
|
else |
1685 |
|
|
strlcpy(client_p->serv->by, "AutoConn.", sizeof(client_p->serv->by)); |
1686 |
|
|
|
1687 |
|
|
SetConnecting(client_p); |
1688 |
|
|
dlinkAdd(client_p, &client_p->node, &global_client_list); |
1689 |
|
|
/* from def_fam */ |
1690 |
|
|
client_p->localClient->aftype = aconf->aftype; |
1691 |
|
|
|
1692 |
|
|
/* Now, initiate the connection */ |
1693 |
|
|
/* XXX assume that a non 0 type means a specific bind address |
1694 |
|
|
* for this connect. |
1695 |
|
|
*/ |
1696 |
|
|
switch (aconf->aftype) |
1697 |
|
|
{ |
1698 |
|
|
case AF_INET: |
1699 |
|
|
v4 = (struct sockaddr_in*)&aconf->my_ipnum; |
1700 |
|
|
if (v4->sin_addr.s_addr != 0) |
1701 |
|
|
{ |
1702 |
|
|
struct irc_ssaddr ipn; |
1703 |
|
|
memset(&ipn, 0, sizeof(struct irc_ssaddr)); |
1704 |
|
|
ipn.ss.ss_family = AF_INET; |
1705 |
|
|
ipn.ss_port = 0; |
1706 |
|
|
memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr)); |
1707 |
|
|
comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port, |
1708 |
|
|
(struct sockaddr *)&ipn, ipn.ss_len, |
1709 |
|
|
serv_connect_callback, client_p, aconf->aftype, |
1710 |
|
|
CONNECTTIMEOUT); |
1711 |
|
|
} |
1712 |
|
|
else if (ServerInfo.specific_ipv4_vhost) |
1713 |
|
|
{ |
1714 |
|
|
struct irc_ssaddr ipn; |
1715 |
|
|
memset(&ipn, 0, sizeof(struct irc_ssaddr)); |
1716 |
|
|
ipn.ss.ss_family = AF_INET; |
1717 |
|
|
ipn.ss_port = 0; |
1718 |
|
|
memcpy(&ipn, &ServerInfo.ip, sizeof(struct irc_ssaddr)); |
1719 |
|
|
comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port, |
1720 |
|
|
(struct sockaddr *)&ipn, ipn.ss_len, |
1721 |
|
|
serv_connect_callback, client_p, aconf->aftype, |
1722 |
|
|
CONNECTTIMEOUT); |
1723 |
|
|
} |
1724 |
|
|
else |
1725 |
|
|
comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port, |
1726 |
|
|
NULL, 0, serv_connect_callback, client_p, aconf->aftype, |
1727 |
|
|
CONNECTTIMEOUT); |
1728 |
|
|
break; |
1729 |
|
|
#ifdef IPV6 |
1730 |
|
|
case AF_INET6: |
1731 |
|
|
{ |
1732 |
|
|
struct irc_ssaddr ipn; |
1733 |
|
|
struct sockaddr_in6 *v6; |
1734 |
|
|
struct sockaddr_in6 *v6conf; |
1735 |
|
|
|
1736 |
|
|
memset(&ipn, 0, sizeof(struct irc_ssaddr)); |
1737 |
|
|
v6conf = (struct sockaddr_in6 *)&aconf->my_ipnum; |
1738 |
|
|
v6 = (struct sockaddr_in6 *)&ipn; |
1739 |
|
|
|
1740 |
|
|
if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr, |
1741 |
|
|
sizeof(struct in6_addr)) != 0) |
1742 |
|
|
{ |
1743 |
|
|
memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr)); |
1744 |
|
|
ipn.ss.ss_family = AF_INET6; |
1745 |
|
|
ipn.ss_port = 0; |
1746 |
|
|
comm_connect_tcp(&client_p->localClient->fd, |
1747 |
|
|
aconf->host, aconf->port, |
1748 |
|
|
(struct sockaddr *)&ipn, ipn.ss_len, |
1749 |
|
|
serv_connect_callback, client_p, |
1750 |
|
|
aconf->aftype, CONNECTTIMEOUT); |
1751 |
|
|
} |
1752 |
|
|
else if (ServerInfo.specific_ipv6_vhost) |
1753 |
|
|
{ |
1754 |
|
|
memcpy(&ipn, &ServerInfo.ip6, sizeof(struct irc_ssaddr)); |
1755 |
|
|
ipn.ss.ss_family = AF_INET6; |
1756 |
|
|
ipn.ss_port = 0; |
1757 |
|
|
comm_connect_tcp(&client_p->localClient->fd, |
1758 |
|
|
aconf->host, aconf->port, |
1759 |
|
|
(struct sockaddr *)&ipn, ipn.ss_len, |
1760 |
|
|
serv_connect_callback, client_p, |
1761 |
|
|
aconf->aftype, CONNECTTIMEOUT); |
1762 |
|
|
} |
1763 |
|
|
else |
1764 |
|
|
comm_connect_tcp(&client_p->localClient->fd, |
1765 |
|
|
aconf->host, aconf->port, |
1766 |
|
|
NULL, 0, serv_connect_callback, client_p, |
1767 |
|
|
aconf->aftype, CONNECTTIMEOUT); |
1768 |
|
|
} |
1769 |
|
|
#endif |
1770 |
|
|
} |
1771 |
|
|
return (1); |
1772 |
|
|
} |
1773 |
|
|
|
1774 |
|
|
/* serv_connect_callback() - complete a server connection. |
1775 |
|
|
* |
1776 |
|
|
* This routine is called after the server connection attempt has |
1777 |
|
|
* completed. If unsucessful, an error is sent to ops and the client |
1778 |
|
|
* is closed. If sucessful, it goes through the initialisation/check |
1779 |
|
|
* procedures, the capabilities are sent, and the socket is then |
1780 |
|
|
* marked for reading. |
1781 |
|
|
*/ |
1782 |
|
|
static void |
1783 |
|
|
serv_connect_callback(fde_t *fd, int status, void *data) |
1784 |
|
|
{ |
1785 |
|
|
struct Client *client_p = data; |
1786 |
|
|
struct ConfItem *conf=NULL; |
1787 |
|
|
struct AccessItem *aconf=NULL; |
1788 |
|
|
|
1789 |
|
|
/* First, make sure its a real client! */ |
1790 |
|
|
assert(client_p != NULL); |
1791 |
|
|
assert(&client_p->localClient->fd == fd); |
1792 |
|
|
|
1793 |
|
|
/* Next, for backward purposes, record the ip of the server */ |
1794 |
|
|
memcpy(&client_p->localClient->ip, &fd->connect.hostaddr, |
1795 |
|
|
sizeof(struct irc_ssaddr)); |
1796 |
|
|
/* Check the status */ |
1797 |
|
|
if (status != COMM_OK) |
1798 |
|
|
{ |
1799 |
|
|
/* We have an error, so report it and quit |
1800 |
|
|
* Admins get to see any IP, mere opers don't *sigh* |
1801 |
|
|
*/ |
1802 |
|
|
if (ConfigServerHide.hide_server_ips) |
1803 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1804 |
|
|
"Error connecting to %s: %s", |
1805 |
|
|
client_p->name, comm_errstr(status)); |
1806 |
|
|
else |
1807 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1808 |
|
|
"Error connecting to %s[%s]: %s", client_p->name, |
1809 |
|
|
client_p->host, comm_errstr(status)); |
1810 |
|
|
|
1811 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, |
1812 |
|
|
"Error connecting to %s: %s", |
1813 |
|
|
client_p->name, comm_errstr(status)); |
1814 |
|
|
|
1815 |
|
|
/* If a fd goes bad, call dead_link() the socket is no |
1816 |
|
|
* longer valid for reading or writing. |
1817 |
|
|
*/ |
1818 |
|
|
dead_link_on_write(client_p, 0); |
1819 |
|
|
return; |
1820 |
|
|
} |
1821 |
|
|
|
1822 |
|
|
/* COMM_OK, so continue the connection procedure */ |
1823 |
|
|
/* Get the C/N lines */ |
1824 |
|
|
conf = find_conf_name(&client_p->localClient->confs, |
1825 |
|
|
client_p->name, SERVER_TYPE); |
1826 |
|
|
if (conf == NULL) |
1827 |
|
|
{ |
1828 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1829 |
|
|
"Lost connect{} block for %s", get_client_name(client_p, HIDE_IP)); |
1830 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, |
1831 |
|
|
"Lost connect{} block for %s", get_client_name(client_p, MASK_IP)); |
1832 |
|
|
|
1833 |
|
|
exit_client(client_p, &me, "Lost connect{} block"); |
1834 |
|
|
return; |
1835 |
|
|
} |
1836 |
|
|
|
1837 |
|
|
aconf = (struct AccessItem *)map_to_conf(conf); |
1838 |
|
|
/* Next, send the initial handshake */ |
1839 |
|
|
SetHandshake(client_p); |
1840 |
|
|
|
1841 |
|
|
#ifdef HAVE_LIBCRYPTO |
1842 |
|
|
/* Handle all CRYPTLINK links in cryptlink_init */ |
1843 |
|
|
if (IsConfCryptLink(aconf)) |
1844 |
|
|
{ |
1845 |
|
|
cryptlink_init(client_p, conf, fd); |
1846 |
|
|
return; |
1847 |
|
|
} |
1848 |
|
|
#endif |
1849 |
|
|
|
1850 |
|
|
/* jdc -- Check and send spasswd, not passwd. */ |
1851 |
michael |
1115 |
if (!EmptyString(aconf->spasswd)) |
1852 |
adx |
30 |
/* Send TS 6 form only if id */ |
1853 |
|
|
sendto_one(client_p, "PASS %s TS %d %s", |
1854 |
|
|
aconf->spasswd, TS_CURRENT, me.id); |
1855 |
|
|
|
1856 |
|
|
/* Pass my info to the new server |
1857 |
|
|
* |
1858 |
|
|
* Pass on ZIP if supported |
1859 |
|
|
* Pass on TB if supported. |
1860 |
|
|
* - Dianora |
1861 |
|
|
*/ |
1862 |
michael |
1119 |
send_capabilities(client_p, aconf, |
1863 |
|
|
(IsConfCompressed(aconf) ? CAP_ZIP : 0) |
1864 |
michael |
329 |
| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), 0); |
1865 |
adx |
30 |
|
1866 |
|
|
sendto_one(client_p, "SERVER %s 1 :%s%s", |
1867 |
michael |
1118 |
me.name, ConfigServerHide.hidden ? "(H) " : "", |
1868 |
adx |
30 |
me.info); |
1869 |
|
|
|
1870 |
|
|
/* If we've been marked dead because a send failed, just exit |
1871 |
|
|
* here now and save everyone the trouble of us ever existing. |
1872 |
|
|
*/ |
1873 |
|
|
if (IsDead(client_p)) |
1874 |
|
|
{ |
1875 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, |
1876 |
|
|
"%s[%s] went dead during handshake", |
1877 |
|
|
client_p->name, |
1878 |
|
|
client_p->host); |
1879 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, |
1880 |
|
|
"%s went dead during handshake", client_p->name); |
1881 |
|
|
return; |
1882 |
|
|
} |
1883 |
|
|
|
1884 |
|
|
/* don't move to serv_list yet -- we haven't sent a burst! */ |
1885 |
|
|
/* If we get here, we're ok, so lets start reading some data */ |
1886 |
|
|
comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0); |
1887 |
|
|
} |
1888 |
|
|
|
1889 |
|
|
struct Client * |
1890 |
|
|
find_servconn_in_progress(const char *name) |
1891 |
|
|
{ |
1892 |
|
|
dlink_node *ptr; |
1893 |
|
|
struct Client *cptr; |
1894 |
|
|
|
1895 |
|
|
DLINK_FOREACH(ptr, unknown_list.head) |
1896 |
|
|
{ |
1897 |
|
|
cptr = ptr->data; |
1898 |
|
|
|
1899 |
|
|
if (cptr && cptr->name[0]) |
1900 |
michael |
1118 |
if (match(name, cptr->name)) |
1901 |
adx |
30 |
return cptr; |
1902 |
|
|
} |
1903 |
|
|
|
1904 |
|
|
return NULL; |
1905 |
|
|
} |
1906 |
|
|
|
1907 |
|
|
#ifdef HAVE_LIBCRYPTO |
1908 |
|
|
/* |
1909 |
|
|
* sends a CRYPTLINK SERV command. |
1910 |
|
|
*/ |
1911 |
|
|
void |
1912 |
|
|
cryptlink_init(struct Client *client_p, struct ConfItem *conf, fde_t *fd) |
1913 |
|
|
{ |
1914 |
|
|
struct AccessItem *aconf; |
1915 |
|
|
char *encrypted; |
1916 |
|
|
unsigned char *key_to_send; |
1917 |
|
|
char randkey[CIPHERKEYLEN]; |
1918 |
|
|
int enc_len; |
1919 |
|
|
|
1920 |
|
|
/* get key */ |
1921 |
|
|
if ((!ServerInfo.rsa_private_key) || |
1922 |
|
|
(!RSA_check_key(ServerInfo.rsa_private_key)) ) |
1923 |
|
|
{ |
1924 |
|
|
cryptlink_error(client_p, "SERV", "Invalid RSA private key", |
1925 |
|
|
"Invalid RSA private key"); |
1926 |
|
|
return; |
1927 |
|
|
} |
1928 |
|
|
|
1929 |
|
|
aconf = (struct AccessItem *)map_to_conf(conf); |
1930 |
|
|
|
1931 |
|
|
if (aconf->rsa_public_key == NULL) |
1932 |
|
|
{ |
1933 |
|
|
cryptlink_error(client_p, "SERV", "Invalid RSA public key", |
1934 |
|
|
"Invalid RSA public key"); |
1935 |
|
|
return; |
1936 |
|
|
} |
1937 |
|
|
|
1938 |
|
|
if (get_randomness((unsigned char *)randkey, CIPHERKEYLEN) != 1) |
1939 |
|
|
{ |
1940 |
|
|
cryptlink_error(client_p, "SERV", "Couldn't generate keyphrase", |
1941 |
|
|
"Couldn't generate keyphrase"); |
1942 |
|
|
return; |
1943 |
|
|
} |
1944 |
|
|
|
1945 |
|
|
encrypted = MyMalloc(RSA_size(ServerInfo.rsa_private_key)); |
1946 |
|
|
enc_len = RSA_public_encrypt(CIPHERKEYLEN, |
1947 |
|
|
(unsigned char *)randkey, |
1948 |
|
|
(unsigned char *)encrypted, |
1949 |
|
|
aconf->rsa_public_key, |
1950 |
|
|
RSA_PKCS1_PADDING); |
1951 |
|
|
|
1952 |
|
|
memcpy(client_p->localClient->in_key, randkey, CIPHERKEYLEN); |
1953 |
|
|
|
1954 |
|
|
if (enc_len <= 0) |
1955 |
|
|
{ |
1956 |
|
|
report_crypto_errors(); |
1957 |
|
|
MyFree(encrypted); |
1958 |
|
|
cryptlink_error(client_p, "SERV", "Couldn't encrypt data", |
1959 |
|
|
"Couldn't encrypt data"); |
1960 |
|
|
return; |
1961 |
|
|
} |
1962 |
|
|
|
1963 |
|
|
if (!(base64_block(&key_to_send, encrypted, enc_len))) |
1964 |
|
|
{ |
1965 |
|
|
MyFree(encrypted); |
1966 |
|
|
cryptlink_error(client_p, "SERV", "Couldn't base64 encode key", |
1967 |
|
|
"Couldn't base64 encode key"); |
1968 |
|
|
return; |
1969 |
|
|
} |
1970 |
|
|
|
1971 |
michael |
1119 |
send_capabilities(client_p, aconf, |
1972 |
|
|
(IsConfCompressed(aconf) ? CAP_ZIP : 0) |
1973 |
michael |
329 |
| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), CAP_ENC_MASK); |
1974 |
adx |
30 |
|
1975 |
michael |
1115 |
sendto_one(client_p, "PASS . TS %d %s", TS_CURRENT, me.id); |
1976 |
adx |
30 |
sendto_one(client_p, "CRYPTLINK SERV %s %s :%s%s", |
1977 |
michael |
1118 |
me.name, key_to_send, |
1978 |
adx |
30 |
ConfigServerHide.hidden ? "(H) " : "", me.info); |
1979 |
|
|
|
1980 |
|
|
SetHandshake(client_p); |
1981 |
|
|
SetWaitAuth(client_p); |
1982 |
|
|
|
1983 |
|
|
MyFree(encrypted); |
1984 |
|
|
MyFree(key_to_send); |
1985 |
|
|
|
1986 |
|
|
if (IsDead(client_p)) |
1987 |
|
|
cryptlink_error(client_p, "SERV", "Went dead during handshake", |
1988 |
|
|
"Went dead during handshake"); |
1989 |
|
|
else if (fd != NULL) |
1990 |
|
|
/* If we get here, we're ok, so lets start reading some data */ |
1991 |
|
|
comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0); |
1992 |
|
|
} |
1993 |
|
|
|
1994 |
|
|
void |
1995 |
|
|
cryptlink_error(struct Client *client_p, const char *type, |
1996 |
|
|
const char *reason, const char *client_reason) |
1997 |
|
|
{ |
1998 |
|
|
sendto_realops_flags(UMODE_ALL, L_ADMIN, "%s: CRYPTLINK %s error - %s", |
1999 |
|
|
get_client_name(client_p, SHOW_IP), type, reason); |
2000 |
|
|
sendto_realops_flags(UMODE_ALL, L_OPER, "%s: CRYPTLINK %s error - %s", |
2001 |
|
|
get_client_name(client_p, MASK_IP), type, reason); |
2002 |
|
|
ilog(L_ERROR, "%s: CRYPTLINK %s error - %s", |
2003 |
|
|
get_client_name(client_p, SHOW_IP), type, reason); |
2004 |
|
|
|
2005 |
|
|
/* If client_reason isn't NULL, then exit the client with the message |
2006 |
|
|
* defined in the call. |
2007 |
|
|
*/ |
2008 |
|
|
if ((client_reason != NULL) && (!IsDead(client_p))) |
2009 |
|
|
exit_client(client_p, &me, client_reason); |
2010 |
|
|
} |
2011 |
|
|
|
2012 |
|
|
static char base64_chars[] = |
2013 |
|
|
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; |
2014 |
|
|
|
2015 |
|
|
static char base64_values[] = |
2016 |
|
|
{ |
2017 |
|
|
/* 00-15 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2018 |
|
|
/* 16-31 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2019 |
|
|
/* 32-47 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, |
2020 |
|
|
/* 48-63 */ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, 0, -1, -1, |
2021 |
|
|
/* 64-79 */ -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, |
2022 |
|
|
/* 80-95 */ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, |
2023 |
|
|
/* 96-111 */ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, |
2024 |
|
|
/* 112-127 */ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, |
2025 |
|
|
/* 128-143 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2026 |
|
|
/* 144-159 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2027 |
|
|
/* 160-175 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2028 |
|
|
/* 186-191 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2029 |
|
|
/* 192-207 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2030 |
|
|
/* 208-223 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2031 |
|
|
/* 224-239 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
2032 |
|
|
/* 240-255 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 |
2033 |
|
|
}; |
2034 |
|
|
|
2035 |
|
|
/* |
2036 |
|
|
* base64_block will allocate and return a new block of memory |
2037 |
|
|
* using MyMalloc(). It should be freed after use. |
2038 |
|
|
*/ |
2039 |
|
|
int |
2040 |
|
|
base64_block(unsigned char **output, char *data, int len) |
2041 |
|
|
{ |
2042 |
|
|
unsigned char *out; |
2043 |
|
|
unsigned char *in = (unsigned char*)data; |
2044 |
|
|
unsigned long int q_in; |
2045 |
|
|
int i; |
2046 |
|
|
int count = 0; |
2047 |
|
|
|
2048 |
|
|
out = MyMalloc(((((len + 2) - ((len + 2) % 3)) / 3) * 4) + 1); |
2049 |
|
|
|
2050 |
|
|
/* process 24 bits at a time */ |
2051 |
|
|
for( i = 0; i < len; i += 3) |
2052 |
|
|
{ |
2053 |
|
|
q_in = 0; |
2054 |
|
|
|
2055 |
|
|
if ( i + 2 < len ) |
2056 |
|
|
{ |
2057 |
|
|
q_in = (in[i+2] & 0xc0) << 2; |
2058 |
|
|
q_in |= in[i+2]; |
2059 |
|
|
} |
2060 |
|
|
|
2061 |
|
|
if ( i + 1 < len ) |
2062 |
|
|
{ |
2063 |
|
|
q_in |= (in[i+1] & 0x0f) << 10; |
2064 |
|
|
q_in |= (in[i+1] & 0xf0) << 12; |
2065 |
|
|
} |
2066 |
|
|
|
2067 |
|
|
q_in |= (in[i] & 0x03) << 20; |
2068 |
|
|
q_in |= in[i] << 22; |
2069 |
|
|
|
2070 |
|
|
q_in &= 0x3f3f3f3f; |
2071 |
|
|
|
2072 |
|
|
out[count++] = base64_chars[((q_in >> 24) )]; |
2073 |
|
|
out[count++] = base64_chars[((q_in >> 16) & 0xff)]; |
2074 |
|
|
out[count++] = base64_chars[((q_in >> 8) & 0xff)]; |
2075 |
|
|
out[count++] = base64_chars[((q_in ) & 0xff)]; |
2076 |
|
|
} |
2077 |
|
|
if ( (i - len) > 0 ) |
2078 |
|
|
{ |
2079 |
|
|
out[count-1] = '='; |
2080 |
|
|
if ( (i - len) > 1 ) |
2081 |
|
|
out[count-2] = '='; |
2082 |
|
|
} |
2083 |
|
|
|
2084 |
|
|
out[count] = '\0'; |
2085 |
|
|
*output = out; |
2086 |
|
|
return (count); |
2087 |
|
|
} |
2088 |
|
|
|
2089 |
|
|
/* |
2090 |
|
|
* unbase64_block will allocate and return a new block of memory |
2091 |
|
|
* using MyMalloc(). It should be freed after use. |
2092 |
|
|
*/ |
2093 |
|
|
int |
2094 |
|
|
unbase64_block(unsigned char **output, char *data, int len) |
2095 |
|
|
{ |
2096 |
|
|
unsigned char *out; |
2097 |
|
|
unsigned char *in = (unsigned char*)data; |
2098 |
|
|
unsigned long int q_in; |
2099 |
|
|
int i; |
2100 |
|
|
int count = 0; |
2101 |
|
|
|
2102 |
|
|
if ((len % 4) != 0) |
2103 |
|
|
return (0); |
2104 |
|
|
|
2105 |
|
|
out = MyMalloc(((len / 4) * 3) + 1); |
2106 |
|
|
|
2107 |
|
|
/* process 32 bits at a time */ |
2108 |
|
|
for( i = 0; (i + 3) < len; i+=4) |
2109 |
|
|
{ |
2110 |
|
|
/* compress input (chars a, b, c and d) as follows: |
2111 |
|
|
* (after converting ascii -> base64 value) |
2112 |
|
|
* |
2113 |
|
|
* |00000000aaaaaabbbbbbccccccdddddd| |
2114 |
|
|
* | 765432 107654 321076 543210| |
2115 |
|
|
*/ |
2116 |
|
|
|
2117 |
|
|
q_in = 0; |
2118 |
|
|
|
2119 |
|
|
if (base64_values[in[i+3]] > -1) |
2120 |
|
|
q_in |= base64_values[in[i+3]] ; |
2121 |
|
|
if (base64_values[in[i+2]] > -1) |
2122 |
|
|
q_in |= base64_values[in[i+2]] << 6; |
2123 |
|
|
if (base64_values[in[i+1]] > -1) |
2124 |
|
|
q_in |= base64_values[in[i+1]] << 12; |
2125 |
|
|
if (base64_values[in[i ]] > -1) |
2126 |
|
|
q_in |= base64_values[in[i ]] << 18; |
2127 |
|
|
|
2128 |
|
|
out[count++] = (q_in >> 16) & 0xff; |
2129 |
|
|
out[count++] = (q_in >> 8) & 0xff; |
2130 |
|
|
out[count++] = (q_in ) & 0xff; |
2131 |
|
|
} |
2132 |
|
|
|
2133 |
|
|
if (in[i-1] == '=') count--; |
2134 |
|
|
if (in[i-2] == '=') count--; |
2135 |
|
|
|
2136 |
|
|
out[count] = '\0'; |
2137 |
|
|
*output = out; |
2138 |
|
|
return (count); |
2139 |
|
|
} |
2140 |
|
|
|
2141 |
|
|
#endif /* HAVE_LIBCRYPTO */ |
2142 |
|
|
|