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root/svn/ircd-hybrid/branches/8.2.x/src/server.c

Comparing:
ircd-hybrid-7.2/src/s_serv.c (file contents), Revision 34 by lusky, Sun Oct 2 21:05:51 2005 UTC vs.
ircd-hybrid/trunk/src/s_serv.c (file contents), Revision 3303 by michael, Sun Apr 13 11:19:36 2014 UTC

#	Line 1 | Line 1
1		/*
2	<	*  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	<	*  s_serv.c: Server related functions.
2	>	*  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3		*
4	<	*  Copyright (C) 2005 by the past and present ircd coders, and others.
4	>	*  Copyright (c) 1997-2014 ircd-hybrid development team
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 18 | Line 17
17		*  along with this program; if not, write to the Free Software
18		*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
19		*  USA
20	<	*
21	<	*  $Id$
20	>	*/
21	>
22	>	/*! \file s_serv.c
23	>	* \brief Server related functions.
24	>	* \version $Id$
25		*/
26
27		#include "stdinc.h"
#	Line 27 | Line 29
29		#include <openssl/rsa.h>
30		#include "rsa.h"
31		#endif
32	<	#include "tools.h"
31	<	#include "channel.h"
32	<	#include "channel_mode.h"
32	>	#include "list.h"
33		#include "client.h"
34	–	#include "common.h"
35	–	#include "dbuf.h"
34		#include "event.h"
37	–	#include "fdlist.h"
35		#include "hash.h"
36		#include "irc_string.h"
40	–	#include "inet_misc.h"
41	–	#include "sprintf_irc.h"
37		#include "ircd.h"
38		#include "ircd_defs.h"
39		#include "s_bsd.h"
45	–	#include "irc_getnameinfo.h"
46	–	#include "list.h"
40		#include "numeric.h"
41		#include "packet.h"
42	<	#include "irc_res.h"
50	<	#include "s_conf.h"
42	>	#include "conf.h"
43		#include "s_serv.h"
44	<	#include "s_log.h"
45	<	#include "s_stats.h"
44	>	#include "log.h"
45	>	#include "s_misc.h"
46		#include "s_user.h"
47		#include "send.h"
48		#include "memory.h"
49	<	#include "channel.h" /* chcap_usage_counts stuff...*/
49	>	#include "channel.h"
50	>	#include "parse.h"
51
52		#define MIN_CONN_FREQ 300
53
54	<	struct Client *uplink  = NULL;
62	<
63	<
54	>	dlink_list flatten_links;
55		static dlink_list cap_list = { NULL, NULL, 0 };
65	–	static unsigned long freeMask;
66	–	static void server_burst(struct Client *);
67	–	static int fork_server(struct Client *);
68	–	static void burst_all(struct Client *);
69	–	static void cjoin_all(struct Client *);
70	–	static void send_tb(struct Client *client_p, struct Channel *chptr);
71	–
56		static CNCB serv_connect_callback;
57
74	–	static void start_io(struct Client *);
75	–	static void burst_members(struct Client *, struct Channel *);
76	–	static void burst_ll_members(struct Client *, struct Channel *);
77	–	static void add_lazylinkchannel(struct Client *, struct Channel *);
78	–
79	–	static SlinkRplHnd slink_error;
80	–	static SlinkRplHnd slink_zipstats;
81	–
82	–
83	–	#ifdef HAVE_LIBCRYPTO
84	–	struct EncCapability CipherTable[] =
85	–	{
86	–	#ifdef HAVE_EVP_BF_CFB
87	–	{ "BF/168",     CAP_ENC_BF_168,     24, CIPHER_BF     },
88	–	{ "BF/128",     CAP_ENC_BF_128,     16, CIPHER_BF     },
89	–	#endif
90	–	#ifdef HAVE_EVP_CAST5_CFB
91	–	{ "CAST/128",   CAP_ENC_CAST_128,   16, CIPHER_CAST   },
92	–	#endif
93	–	#ifdef HAVE_EVP_IDEA_CFB
94	–	{ "IDEA/128",   CAP_ENC_IDEA_128,   16, CIPHER_IDEA   },
95	–	#endif
96	–	#ifdef HAVE_EVP_RC5_32_12_16_CFB
97	–	{ "RC5.16/128", CAP_ENC_RC5_16_128, 16, CIPHER_RC5_16 },
98	–	{ "RC5.12/128", CAP_ENC_RC5_12_128, 16, CIPHER_RC5_12 },
99	–	{ "RC5.8/128",  CAP_ENC_RC5_8_128,  16, CIPHER_RC5_8  },
100	–	#endif
101	–	#ifdef HAVE_EVP_DES_EDE3_CFB
102	–	{ "3DES/168",   CAP_ENC_3DES_168,   24, CIPHER_3DES   },
103	–	#endif
104	–	#ifdef HAVE_EVP_DES_CFB
105	–	{ "DES/56",     CAP_ENC_DES_56,      8, CIPHER_DES    },
106	–	#endif
107	–	{ 0,            0,                   0, 0             }
108	–	};
109	–	#endif
110	–
111	–	struct SlinkRplDef slinkrpltab[] = {
112	–	{ SLINKRPL_ERROR,    slink_error,    SLINKRPL_FLAG_DATA },
113	–	{ SLINKRPL_ZIPSTATS, slink_zipstats, SLINKRPL_FLAG_DATA },
114	–	{ 0,                 0,              0 },
115	–	};
116	–
117	–
118	–	void
119	–	slink_error(unsigned int rpl, unsigned int len, unsigned char *data,
120	–	struct Client *server_p)
121	–	{
122	–	assert(rpl == SLINKRPL_ERROR);
123	–	assert(len < 256);
124	–
125	–	data[len-1] = '\0';
126	–
127	–	sendto_realops_flags(UMODE_ALL, L_ALL, "SlinkError for %s: %s",
128	–	server_p->name, data);
129	–	/* XXX should this be exit_client? */
130	–	exit_client(server_p, &me, "servlink error -- terminating link");
131	–	}
132	–
133	–	void
134	–	slink_zipstats(unsigned int rpl, unsigned int len, unsigned char *data,
135	–	struct Client *server_p)
136	–	{
137	–	struct ZipStats zipstats;
138	–	unsigned long in = 0, in_wire = 0, out = 0, out_wire = 0;
139	–	int i = 0;
140	–
141	–	assert(rpl == SLINKRPL_ZIPSTATS);
142	–	assert(len == 16);
143	–	assert(IsCapable(server_p, CAP_ZIP));
144	–
145	–	/* Yes, it needs to be done this way, no we cannot let the compiler
146	–	* work with the pointer to the structure.  This works around a GCC
147	–	* bug on SPARC that affects all versions at the time of this writing.
148	–	* I will feed you to the creatures living in RMS's beard if you do
149	–	* not leave this as is, without being sure that you are not causing
150	–	* regression for most of our installed SPARC base.
151	–	* -jmallett, 04/27/2002
152	–	*/
153	–	memcpy(&zipstats, &server_p->localClient->zipstats, sizeof(struct ZipStats));
154	–
155	–	in |= (data[i++] << 24);
156	–	in |= (data[i++] << 16);
157	–	in |= (data[i++] <<  8);
158	–	in |= (data[i++]      );
159	–
160	–	in_wire |= (data[i++] << 24);
161	–	in_wire |= (data[i++] << 16);
162	–	in_wire |= (data[i++] <<  8);
163	–	in_wire |= (data[i++]      );
164	–
165	–	out |= (data[i++] << 24);
166	–	out |= (data[i++] << 16);
167	–	out |= (data[i++] <<  8);
168	–	out |= (data[i++]      );
169	–
170	–	out_wire |= (data[i++] << 24);
171	–	out_wire |= (data[i++] << 16);
172	–	out_wire |= (data[i++] <<  8);
173	–	out_wire |= (data[i++]      );
174	–
175	–	/* This macro adds b to a if a plus b is not an overflow, and sets the
176	–	* value of a to b if it is.
177	–	* Add and Set if No Overflow.
178	–	*/
179	–	#define ASNO(a, b) a = (a + b >= a ? a + b : b)
180	–
181	–	ASNO(zipstats.in, in);
182	–	ASNO(zipstats.out, out);
183	–	ASNO(zipstats.in_wire, in_wire);
184	–	ASNO(zipstats.out_wire, out_wire);
185	–
186	–	if (zipstats.in > 0)
187	–	zipstats.in_ratio = (((double)(zipstats.in - zipstats.in_wire) /
188	–	(double)zipstats.in) * 100.00);
189	–	else
190	–	zipstats.in_ratio = 0;
191	–
192	–	if (zipstats.out > 0)
193	–	zipstats.out_ratio = (((double)(zipstats.out - zipstats.out_wire) /
194	–	(double)zipstats.out) * 100.00);
195	–	else
196	–	zipstats.out_ratio = 0;
197	–
198	–	memcpy(&server_p->localClient->zipstats, &zipstats, sizeof (struct ZipStats));
199	–	}
200	–
201	–	void
202	–	collect_zipstats(void *unused)
203	–	{
204	–	dlink_node *ptr;
205	–	struct Client *target_p;
206	–
207	–	DLINK_FOREACH(ptr, serv_list.head)
208	–	{
209	–	target_p = ptr->data;
210	–
211	–	if (IsCapable(target_p, CAP_ZIP))
212	–	{
213	–	/* only bother if we haven't already got something queued... */
214	–	if (!target_p->localClient->slinkq)
215	–	{
216	–	target_p->localClient->slinkq     = MyMalloc(1); /* sigh.. */
217	–	target_p->localClient->slinkq[0]  = SLINKCMD_ZIPSTATS;
218	–	target_p->localClient->slinkq_ofs = 0;
219	–	target_p->localClient->slinkq_len = 1;
220	–	send_queued_slink_write(target_p);
221	–	}
222	–	}
223	–	}
224	–	}
225	–
226	–	#ifdef HAVE_LIBCRYPTO
227	–	struct EncCapability *
228	–	check_cipher(struct Client *client_p, struct AccessItem *aconf)
229	–	{
230	–	struct EncCapability *epref;
231	–
232	–	/* Use connect{} specific info if available */
233	–	if (aconf->cipher_preference)
234	–	epref = aconf->cipher_preference;
235	–	else
236	–	epref = ConfigFileEntry.default_cipher_preference;
237	–
238	–	/* If the server supports the capability in hand, return the matching
239	–	* conf struct.  Otherwise, return NULL (an error).
240	–	*/
241	–	if (IsCapableEnc(client_p, epref->cap))
242	–	return(epref);
243	–
244	–	return(NULL);
245	–	}
246	–	#endif /* HAVE_LIBCRYPTO */
247	–
248	–	/* my_name_for_link()
249	–	* return wildcard name of my server name
250	–	* according to given config entry --Jto
251	–	*/
252	–	const char *
253	–	my_name_for_link(struct ConfItem *conf)
254	–	{
255	–	struct AccessItem *aconf;
256	–
257	–	aconf = (struct AccessItem *)map_to_conf(conf);
258	–	if (aconf->fakename != NULL)
259	–	return(aconf->fakename);
260	–	else
261	–	return(me.name);
262	–	}
58
59		/*
60		* write_links_file
#	Line 270 | Line 65 | my_name_for_link(struct ConfItem *conf)
65		*                but in no particular order.
66		*/
67		void
68	<	write_links_file(void* notused)
68	>	write_links_file(void *notused)
69		{
70	<	MessageFileLine *next_mptr = 0;
71	<	MessageFileLine *mptr = 0;
72	<	MessageFileLine *currentMessageLine = 0;
278	<	MessageFileLine *newMessageLine = 0;
279	<	MessageFile *MessageFileptr;
280	<	const char *p;
281	<	FBFILE *file;
282	<	char buff[512];
283	<	dlink_node *ptr;
70	>	FILE *file = NULL;
71	>	dlink_node *ptr = NULL, *ptr_next = NULL;
72	>	char buff[IRCD_BUFSIZE] = "";
73
74	<	MessageFileptr = &ConfigFileEntry.linksfile;
286	<
287	<	if ((file = fbopen(MessageFileptr->fileName, "w")) == NULL)
74	>	if ((file = fopen(LIPATH, "w")) == NULL)
75		return;
76
77	<	for (mptr = MessageFileptr->contentsOfFile; mptr; mptr = next_mptr)
77	>	DLINK_FOREACH_SAFE(ptr, ptr_next, flatten_links.head)
78		{
79	<	next_mptr = mptr->next;
80	<	MyFree(mptr);
79	>	dlinkDelete(ptr, &flatten_links);
80	>	MyFree(ptr->data);
81	>	free_dlink_node(ptr);
82		}
83
296	–	MessageFileptr->contentsOfFile = NULL;
297	–	currentMessageLine             = NULL;
298	–
84		DLINK_FOREACH(ptr, global_serv_list.head)
85		{
86	<	size_t nbytes = 0;
302	<	struct Client *target_p = ptr->data;
86	>	const struct Client *target_p = ptr->data;
87
88	<	/* skip ourselves, we send ourselves in /links */
89	<	if (IsMe(target_p))
88	>	/*
89	>	* Skip hidden servers, aswell as ourselves, since we already send
90	>	* ourselves in /links
91	>	*/
92	>	if (IsHidden(target_p) || IsMe(target_p))
93		continue;
94
95	<	/* skip hidden servers */
309	<	if (IsHidden(target_p) && !ConfigServerHide.disable_hidden)
95	>	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
96		continue;
97
98	<	if (target_p->info[0])
99	<	p = target_p->info;
314	<	else
315	<	p = "(Unknown Location)";
316	<
317	<	newMessageLine = MyMalloc(sizeof(MessageFileLine));
318	<
319	<	/* Attempt to format the file in such a way it follows the usual links output
98	>	/*
99	>	* Attempt to format the file in such a way it follows the usual links output
100		* ie  "servername uplink :hops info"
101		* Mostly for aesthetic reasons - makes it look pretty in mIRC ;)
102		* - madmax
103		*/
104	+	snprintf(buff, sizeof(buff), "%s %s :1 %s",   target_p->name,
105	+	me.name, target_p->info);
106	+	dlinkAddTail(xstrdup(buff), make_dlink_node(), &flatten_links);
107	+	snprintf(buff, sizeof(buff), "%s %s :1 %s\n", target_p->name,
108	+	me.name, target_p->info);
109
110	<	/*
111	<	* For now, check this ircsprintf wont overflow - it shouldnt on a
327	<	* default config but it is configurable..
328	<	* This should be changed to an snprintf at some point, but I'm wanting to
329	<	* know if this is a cause of a bug - cryogen
330	<	*/
331	<	assert(strlen(target_p->name) + strlen(me.name) + 6 + strlen(p) <=
332	<	MESSAGELINELEN);
333	<	ircsprintf(newMessageLine->line, "%s %s :1 %s",
334	<	target_p->name, me.name, p);
335	<	newMessageLine->next = NULL;
110	>	fputs(buff, file);
111	>	}
112
113	<	if (MessageFileptr->contentsOfFile)
114	<	{
115	<	if (currentMessageLine)
116	<	currentMessageLine->next = newMessageLine;
117	<	currentMessageLine = newMessageLine;
118	<	}
119	<	else
120	<	{
121	<	MessageFileptr->contentsOfFile = newMessageLine;
346	<	currentMessageLine = newMessageLine;
347	<	}
113	>	fclose(file);
114	>	}
115	>
116	>	void
117	>	read_links_file(void)
118	>	{
119	>	FILE *file = NULL;
120	>	char *p = NULL;
121	>	char buff[IRCD_BUFSIZE] = "";
122
123	<	nbytes = ircsprintf(buff, "%s %s :1 %s\n", target_p->name, me.name, p);
124	<	fbputs(buff, file, nbytes);
123	>	if ((file = fopen(LIPATH, "r")) == NULL)
124	>	return;
125	>
126	>	while (fgets(buff, sizeof(buff), file))
127	>	{
128	>	if ((p = strchr(buff, '\n')))
129	>	*p = '\0';
130	>
131	>	dlinkAddTail(xstrdup(buff), make_dlink_node(), &flatten_links);
132		}
133
134	<	fbclose(file);
134	>	fclose(file);
135		}
136
137		/* hunt_server()
#	Line 373 | Line 154 | write_links_file(void* notused)
154		*      returns: (see #defines)
155		*/
156		int
157	<	hunt_server(struct Client *client_p, struct Client *source_p, const char *command,
158	<	int server, int parc, char *parv[])
157	>	hunt_server(struct Client *source_p, const char *command,
158	>	const int server, const int parc, char *parv[])
159		{
160		struct Client *target_p = NULL;
161		struct Client *target_tmp = NULL;
162		dlink_node *ptr;
163		int wilds;
164
165	<	/* Assume it's me, if no server
166	<	*/
167	<	if (parc <= server || EmptyString(parv[server]) ||
168	<	match(me.name, parv[server]) ||
169	<	match(parv[server], me.name) ||
170	<	!strcmp(parv[server], me.id))
390	<	return(HUNTED_ISME);
165	>	/* Assume it's me, if no server */
166	>	if (parc <= server || EmptyString(parv[server]))
167	>	return HUNTED_ISME;
168	>
169	>	if (!strcmp(parv[server], me.id) || !match(parv[server], me.name))
170	>	return HUNTED_ISME;
171
172		/* These are to pickup matches that would cause the following
173		* message to go in the wrong direction while doing quick fast
174		* non-matching lookups.
175		*/
176		if (MyClient(source_p))
177	<	target_p = find_client(parv[server]);
177	>	target_p = hash_find_client(parv[server]);
178		else
179	<	target_p = find_person(client_p, parv[server]);
179	>	target_p = find_person(source_p, parv[server]);
180
181		if (target_p)
182		if (target_p->from == source_p->from && !MyConnect(target_p))
183		target_p = NULL;
184
185	<	if (target_p == NULL && (target_p = find_server(parv[server])))
185	>	if (target_p == NULL && (target_p = hash_find_server(parv[server])))
186		if (target_p->from == source_p->from && !MyConnect(target_p))
187		target_p = NULL;
188
189	<	collapse(parv[server]);
410	<	wilds = (strchr(parv[server], '?') || strchr(parv[server], '*'));
189	>	wilds = has_wildcards(parv[server]);
190
191		/* Again, if there are no wild cards involved in the server
192		* name, use the hash lookup
#	Line 416 | Line 195 | hunt_server(struct Client *client_p, str
195		{
196		if (!wilds)
197		{
198	<	if (!(target_p = find_server(parv[server])))
198	>	if (!(target_p = hash_find_server(parv[server])))
199		{
200	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
201	<	me.name, parv[0], parv[server]);
423	<	return(HUNTED_NOSUCH);
200	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
201	>	return HUNTED_NOSUCH;
202		}
203		}
204		else
#	Line 429 | Line 207 | hunt_server(struct Client *client_p, str
207		{
208		target_tmp = ptr->data;
209
210	<	if (match(parv[server], target_tmp->name))
210	>	if (!match(parv[server], target_tmp->name))
211		{
212		if (target_tmp->from == source_p->from && !MyConnect(target_tmp))
213		continue;
214		target_p = ptr->data;
215
216	<	if (IsRegistered(target_p) && (target_p != client_p))
216	>	if (IsRegistered(target_p) && (target_p != source_p->from))
217		break;
218		}
219		}
220		}
221		}
222
223	<	if (target_p != NULL)
223	>	if (target_p)
224		{
225	<	if(!IsRegistered(target_p))
225	>	if (!IsRegistered(target_p))
226		{
227	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
450	<	me.name, parv[0], parv[server]);
227	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
228		return HUNTED_NOSUCH;
229		}
230
231		if (IsMe(target_p) || MyClient(target_p))
232		return HUNTED_ISME;
233
234	<	if (!match(target_p->name, parv[server]))
234	>	if (match(target_p->name, parv[server]))
235		parv[server] = target_p->name;
236
460	–	/* Deal with lazylinks */
461	–	client_burst_if_needed(target_p, source_p);
462	–
237		/* This is a little kludgy but should work... */
238	<	if (IsClient(source_p) &&
465	<	((MyConnect(target_p) && IsCapable(target_p, CAP_TS6)) ||
466	<	(!MyConnect(target_p) && IsCapable(target_p->from, CAP_TS6))))
467	<	parv[0] = ID(source_p);
468	<
469	<	sendto_one(target_p, command, parv[0],
238	>	sendto_one(target_p, command, ID_or_name(source_p, target_p),
239		parv[1], parv[2], parv[3], parv[4],
240		parv[5], parv[6], parv[7], parv[8]);
241	<	return(HUNTED_PASS);
242	<	}
241	>	return HUNTED_PASS;
242	>	}
243
244	<	sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
245	<	me.name, parv[0], parv[server]);
477	<	return(HUNTED_NOSUCH);
244	>	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, parv[server]);
245	>	return HUNTED_NOSUCH;
246		}
247
248		/* try_connections()
#	Line 490 | Line 258 | hunt_server(struct Client *client_p, str
258		void
259		try_connections(void *unused)
260		{
261	<	dlink_node *ptr;
262	<	struct ConfItem *conf;
495	<	struct AccessItem *aconf;
496	<	struct ClassItem *cltmp;
261	>	dlink_node *ptr = NULL;
262	>	struct MaskItem *conf;
263		int confrq;
264
265		/* TODO: change this to set active flag to 0 when added to event! --Habeeb */
#	Line 503 | Line 269 | try_connections(void *unused)
269		DLINK_FOREACH(ptr, server_items.head)
270		{
271		conf = ptr->data;
506	–	aconf = (struct AccessItem *)map_to_conf(conf);
272
273	<	/* Also when already connecting! (update holdtimes) --SRB
273	>	assert(conf->type == CONF_SERVER);
274	>
275	>	/* Also when already connecting! (update holdtimes) --SRB
276		*/
277	<	if (!(aconf->status & CONF_SERVER) || aconf->port <= 0 ||
511	<	!(IsConfAllowAutoConn(aconf)))
277	>	if (!conf->port ||!IsConfAllowAutoConn(conf))
278		continue;
279
514	–	cltmp = (struct ClassItem *)map_to_conf(aconf->class_ptr);
280
281		/* Skip this entry if the use of it is still on hold until
282		* future. Otherwise handle this entry (and set it on hold
#	Line 519 | Line 284 | try_connections(void *unused)
284		* made one successfull connection... [this algorithm is
285		* a bit fuzzy... -- msa >;) ]
286		*/
287	<	if (aconf->hold > CurrentTime)
287	>	if (conf->until > CurrentTime)
288		continue;
289
290	<	if (cltmp == NULL)
290	>	if (conf->class == NULL)
291		confrq = DEFAULT_CONNECTFREQUENCY;
292		else
293		{
294	<	confrq = ConFreq(cltmp);
295	<	if (confrq < MIN_CONN_FREQ )
296	<	confrq = MIN_CONN_FREQ;
294	>	confrq = conf->class->con_freq;
295	>	if (confrq < MIN_CONN_FREQ)
296	>	confrq = MIN_CONN_FREQ;
297		}
298
299	<	aconf->hold = CurrentTime + confrq;
299	>	conf->until = CurrentTime + confrq;
300
301	<	/* Found a CONNECT config with port specified, scan clients
301	>	/*
302	>	* Found a CONNECT config with port specified, scan clients
303		* and see if this server is already connected?
304		*/
305	<	if (find_server(conf->name) != NULL)
305	>	if (hash_find_server(conf->name))
306		continue;
307
308	<	if (CurrUserCount(cltmp) < MaxTotal(cltmp))
308	>	if (conf->class->ref_count < conf->class->max_total)
309		{
310		/* Go to the end of the list, if not already last */
311	<	if (ptr->next != NULL)
311	>	if (ptr->next)
312		{
313		dlinkDelete(ptr, &server_items);
314		dlinkAddTail(conf, &conf->node, &server_items);
#	Line 551 | Line 317 | try_connections(void *unused)
317		if (find_servconn_in_progress(conf->name))
318		return;
319
320	<	/* We used to only print this if serv_connect() actually
320	>	/*
321	>	* We used to only print this if serv_connect() actually
322		* succeeded, but since comm_tcp_connect() can call the callback
323		* immediately if there is an error, we were getting error messages
324		* in the wrong order. SO, we just print out the activated line,
#	Line 560 | Line 327 | try_connections(void *unused)
327		*   -- adrian
328		*/
329		if (ConfigServerHide.hide_server_ips)
330	<	sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s activated.",
330	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
331	>	"Connection to %s activated.",
332		conf->name);
333		else
334	<	sendto_realops_flags(UMODE_ALL, L_ALL, "Connection to %s[%s] activated.",
335	<	conf->name, aconf->host);
334	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
335	>	"Connection to %s[%s] activated.",
336	>	conf->name, conf->host);
337
338	<	serv_connect(aconf, NULL);
338	>	serv_connect(conf, NULL);
339		/* We connect only one at time... */
340		return;
341		}
#	Line 574 | Line 343 | try_connections(void *unused)
343		}
344
345		int
346	<	check_server(const char *name, struct Client *client_p, int cryptlink)
346	>	valid_servname(const char *name)
347		{
348	<	dlink_node *ptr;
349	<	struct ConfItem *conf           = NULL;
350	<	struct ConfItem *server_conf    = NULL;
351	<	struct AccessItem *server_aconf = NULL;
352	<	struct AccessItem *aconf        = NULL;
353	<	int error = -1;
348	>	unsigned int length = 0;
349	>	unsigned int dots   = 0;
350	>	const char *p = name;
351	>
352	>	for (; *p; ++p)
353	>	{
354	>	if (!IsServChar(*p))
355	>	return 0;
356
357	<	assert(client_p != NULL);
357	>	++length;
358
359	<	if (client_p == NULL)
360	<	return(error);
359	>	if (*p == '.')
360	>	++dots;
361	>	}
362
363	<	if (strlen(name) > HOSTLEN)
364	<	return(-4);
363	>	return dots && length <= HOSTLEN;
364	>	}
365	>
366	>	int
367	>	check_server(const char *name, struct Client *client_p)
368	>	{
369	>	dlink_node *ptr;
370	>	struct MaskItem *conf        = NULL;
371	>	struct MaskItem *server_conf = NULL;
372	>	int error = -1;
373	>
374	>	assert(client_p);
375
376		/* loop through looking for all possible connect items that might work */
377		DLINK_FOREACH(ptr, server_items.head)
378		{
379		conf = ptr->data;
598	–	aconf = (struct AccessItem *)map_to_conf(conf);
380
381	<	if (!match(name, conf->name))
381	>	if (match(name, conf->name))
382		continue;
383
384		error = -3;
385
386		/* XXX: Fix me for IPv6                    */
387		/* XXX sockhost is the IPv4 ip as a string */
388	<	if (match(aconf->host, client_p->host) ||
389	<	match(aconf->host, client_p->sockhost))
388	>	if (!match(conf->host, client_p->host) ||
389	>	!match(conf->host, client_p->sockhost))
390		{
391		error = -2;
611	–	#ifdef HAVE_LIBCRYPTO
612	–	if (cryptlink && IsConfCryptLink(aconf))
613	–	{
614	–	if (aconf->rsa_public_key)
615	–	server_conf = conf;
616	–	}
617	–	else if (!(cryptlink || IsConfCryptLink(aconf)))
618	–	#endif /* HAVE_LIBCRYPTO */
619	–	{
620	–	/* A NULL password is as good as a bad one */
621	–	if (EmptyString(client_p->localClient->passwd))
622	–	return(-2);
623	–
624	–	/* code in s_conf.c should not have allowed this to be NULL */
625	–	if (aconf->passwd == NULL)
626	–	return(-2);
392
393	<	if (IsConfEncrypted(aconf))
394	<	{
395	<	if (strcmp(aconf->passwd,
396	<	(const char *)crypt(client_p->localClient->passwd,
397	<	aconf->passwd)) == 0)
398	<	server_conf = conf;
399	<	}
400	<	else
636	<	{
637	<	if (strcmp(aconf->passwd, client_p->localClient->passwd) == 0)
638	<	server_conf = conf;
639	<	}
640	<	}
393	>	if (!match_conf_password(client_p->localClient->passwd, conf))
394	>	return -2;
395	>
396	>	if (!EmptyString(conf->certfp))
397	>	if (EmptyString(client_p->certfp) || strcasecmp(client_p->certfp, conf->certfp))
398	>	return -4;
399	>
400	>	server_conf = conf;
401		}
402		}
403
404		if (server_conf == NULL)
405	<	return(error);
405	>	return error;
406
407		attach_conf(client_p, server_conf);
408
649	–	/* Now find all leaf or hub config items for this server */
650	–	DLINK_FOREACH(ptr, hub_items.head)
651	–	{
652	–	conf = ptr->data;
653	–
654	–	if (!match(name, conf->name))
655	–	continue;
656	–	attach_conf(client_p, conf);
657	–	}
409
410	<	DLINK_FOREACH(ptr, leaf_items.head)
660	<	{
661	<	conf = ptr->data;
662	<
663	<	if (!match(name, conf->name))
664	<	continue;
665	<	attach_conf(client_p, conf);
666	<	}
667	<
668	<	server_aconf = (struct AccessItem *)map_to_conf(server_conf);
669	<
670	<	if (!IsConfLazyLink(server_aconf))
671	<	ClearCap(client_p, CAP_LL);
672	<	#ifdef HAVE_LIBZ /* otherwise, clear it unconditionally */
673	<	if (!IsConfCompressed(server_aconf))
674	<	#endif
675	<	ClearCap(client_p, CAP_ZIP);
676	<	if (!IsConfCryptLink(server_aconf))
677	<	ClearCap(client_p, CAP_ENC);
678	<	if (!IsConfTopicBurst(server_aconf))
679	<	ClearCap(client_p, CAP_TB);
680	<
681	<	/* Don't unset CAP_HUB here even if the server isn't a hub,
682	<	* it only indicates if the server thinks it's lazylinks are
683	<	* leafs or not.. if you unset it, bad things will happen
684	<	*/
685	<	if (aconf != NULL)
410	>	if (server_conf)
411		{
412		struct sockaddr_in *v4;
413		#ifdef IPV6
414		struct sockaddr_in6 *v6;
415		#endif
416	<	switch (aconf->aftype)
416	>	switch (server_conf->aftype)
417		{
418		#ifdef IPV6
419	<	case AF_INET6:
420	<	v6 = (struct sockaddr_in6 *)&aconf->ipnum;
419	>	case AF_INET6:
420	>	v6 = (struct sockaddr_in6 *)&server_conf->addr;
421
422		if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr))
423	<	memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
423	>	memcpy(&server_conf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
424		break;
425		#endif
426		case AF_INET:
427	<	v4 = (struct sockaddr_in *)&aconf->ipnum;
427	>	v4 = (struct sockaddr_in *)&server_conf->addr;
428
429		if (v4->sin_addr.s_addr == INADDR_NONE)
430	<	memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
430	>	memcpy(&server_conf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
431		break;
432		}
433		}
434
435	<	return(0);
435	>	return 0;
436		}
437
438		/* add_capability()
#	Line 722 | Line 447 | check_server(const char *name, struct Cl
447		void
448		add_capability(const char *capab_name, int cap_flag, int add_to_default)
449		{
450	<	struct Capability *cap;
450	>	struct Capability *cap = MyMalloc(sizeof(*cap));
451
452	<	cap = (struct Capability *)MyMalloc(sizeof(*cap));
728	<	DupString(cap->name, capab_name);
452	>	cap->name = xstrdup(capab_name);
453		cap->cap = cap_flag;
454		dlinkAdd(cap, &cap->node, &cap_list);
455	+
456		if (add_to_default)
457		default_server_capabs |= cap_flag;
458		}
#	Line 753 | Line 478 | delete_capability(const char *capab_name
478		{
479		if (irccmp(cap->name, capab_name) == 0)
480		{
481	<	default_server_capabs &= ~(cap->cap);
482	<	dlinkDelete(ptr, &cap_list);
483	<	MyFree(cap->name);
484	<	cap->name = NULL;
760	<	MyFree(cap);
481	>	default_server_capabs &= ~(cap->cap);
482	>	dlinkDelete(ptr, &cap_list);
483	>	MyFree(cap->name);
484	>	MyFree(cap);
485		}
486		}
487		}
488
489	<	return(0);
489	>	return 0;
490		}
491
492		/*
#	Line 772 | Line 496 | delete_capability(const char *capab_name
496		* output       - 0 if not found CAPAB otherwise
497		* side effects - none
498		*/
499	<	int
499	>	unsigned int
500		find_capability(const char *capab)
501		{
502	<	dlink_node *ptr;
779	<	struct Capability *cap;
502	>	const dlink_node *ptr = NULL;
503
504		DLINK_FOREACH(ptr, cap_list.head)
505		{
506	<	cap = ptr->data;
506	>	const struct Capability *cap = ptr->data;
507
508	<	if (cap->cap != 0)
509	<	{
787	<	if (irccmp(cap->name, capab) == 0)
788	<	return(cap->cap);
789	<	}
508	>	if (cap->cap && !irccmp(cap->name, capab))
509	>	return cap->cap;
510		}
511	<	return(0);
511	>
512	>	return 0;
513		}
514
515		/* send_capabilities()
516		*
517		* inputs       - Client pointer to send to
797	–	*              - Pointer to AccessItem (for crypt)
518		*              - int flag of capabilities that this server can send
799	–	*              - int flag of encryption capabilities
519		* output       - NONE
520		* side effects - send the CAPAB line to a server  -orabidoo
521		*
522		*/
523		void
524	<	send_capabilities(struct Client *client_p, struct AccessItem *aconf,
806	<	int cap_can_send, int enc_can_send)
524	>	send_capabilities(struct Client *client_p, int cap_can_send)
525		{
526	<	struct Capability *cap=NULL;
527	<	char msgbuf[IRCD_BUFSIZE];
810	<	char *t;
526	>	char msgbuf[IRCD_BUFSIZE] = "";
527	>	char *t = msgbuf;
528		int tl;
529	<	dlink_node *ptr;
813	<	#ifdef HAVE_LIBCRYPTO
814	<	struct EncCapability *epref;
815	<	char *capend;
816	<	int sent_cipher = 0;
817	<	#endif
818	<
819	<	t = msgbuf;
529	>	dlink_node *ptr = NULL;
530
531		DLINK_FOREACH(ptr, cap_list.head)
532		{
533	<	cap = ptr->data;
533	>	struct Capability *cap = ptr->data;
534
535		if (cap->cap & (cap_can_send|default_server_capabs))
536		{
537	<	tl = ircsprintf(t, "%s ", cap->name);
537	>	tl = sprintf(t, "%s ", cap->name);
538		t += tl;
539		}
540		}
831	–	#ifdef HAVE_LIBCRYPTO
832	–	if (enc_can_send)
833	–	{
834	–	capend = t;
835	–	strcpy(t, "ENC:");
836	–	t += 4;
837	–
838	–	/* use connect{} specific info if available */
839	–	if (aconf->cipher_preference)
840	–	epref = aconf->cipher_preference;
841	–	else
842	–	epref = ConfigFileEntry.default_cipher_preference;
541
542	<	if ((epref->cap & enc_can_send))
845	<	{
846	<	/* Leave the space -- it is removed later. */
847	<	tl = ircsprintf(t, "%s ", epref->name);
848	<	t += tl;
849	<	sent_cipher = 1;
850	<	}
851	<
852	<	if (!sent_cipher)
853	<	t = capend; /* truncate string before ENC:, below */
854	<	}
855	<	#endif
856	<	*(t-1) = '\0';
542	>	*(t - 1) = '\0';
543		sendto_one(client_p, "CAPAB :%s", msgbuf);
544		}
545
860	–	/* sendnick_TS()
861	–	*
862	–	* inputs       - client (server) to send nick towards
863	–	*              - client to send nick for
864	–	* output       - NONE
865	–	* side effects - NICK message is sent towards given client_p
866	–	*/
867	–	void
868	–	sendnick_TS(struct Client *client_p, struct Client *target_p)
869	–	{
870	–	static char ubuf[12];
871	–
872	–	if (!IsClient(target_p))
873	–	return;
874	–
875	–	send_umode(NULL, target_p, 0, IsOperHiddenAdmin(target_p) ?
876	–	SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, ubuf);
877	–
878	–	if (ubuf[0] == '\0')
879	–	{
880	–	ubuf[0] = '+';
881	–	ubuf[1] = '\0';
882	–	}
883	–
884	–	/* XXX Both of these need to have a :me.name or :mySID!?!?! */
885	–	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
886	–	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
887	–	target_p->servptr->id,
888	–	target_p->name, target_p->hopcount + 1,
889	–	(unsigned long) target_p->tsinfo,
890	–	ubuf, target_p->username, target_p->host,
891	–	((MyClient(target_p)&&!IsIPSpoof(target_p))?target_p->sockhost:"0"),
892	–	target_p->id, target_p->info);
893	–	else
894	–	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
895	–	target_p->name, target_p->hopcount + 1,
896	–	(unsigned long) target_p->tsinfo,
897	–	ubuf, target_p->username, target_p->host,
898	–	target_p->servptr->name, target_p->info);
899	–	if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->serv->sconf)))
900	–	if (!EmptyString(target_p->away))
901	–	sendto_one(client_p, ":%s AWAY :%s", target_p->name,
902	–	target_p->away);
903	–
904	–	}
905	–
906	–	/* client_burst_if_needed()
907	–	*
908	–	* inputs       - pointer to server
909	–	*              - pointer to client to add
910	–	* output       - NONE
911	–	* side effects - If this client is not known by this lazyleaf, send it
912	–	*/
913	–	void
914	–	client_burst_if_needed(struct Client *client_p, struct Client *target_p)
915	–	{
916	–	if (!ServerInfo.hub)
917	–	return;
918	–	if (!MyConnect(client_p))
919	–	return;
920	–	if (!IsCapable(client_p,CAP_LL))
921	–	return;
922	–
923	–	if ((target_p->lazyLinkClientExists & client_p->localClient->serverMask) == 0)
924	–	{
925	–	sendnick_TS(client_p, target_p);
926	–	add_lazylinkclient(client_p,target_p);
927	–	}
928	–	}
929	–
546		/*
547		* show_capabilities - show current server capabilities
548		*
#	Line 935 | Line 551 | client_burst_if_needed(struct Client *cl
551		* side effects - build up string representing capabilities of server listed
552		*/
553		const char *
554	<	show_capabilities(struct Client *target_p)
554	>	show_capabilities(const struct Client *target_p)
555		{
556	<	static char msgbuf[IRCD_BUFSIZE];
557	<	char *t = msgbuf;
942	<	dlink_node *ptr;
556	>	static char msgbuf[IRCD_BUFSIZE] = "";
557	>	const dlink_node *ptr = NULL;
558
559	<	t += ircsprintf(msgbuf, "TS ");
559	>	strlcpy(msgbuf, "TS", sizeof(msgbuf));
560
561		DLINK_FOREACH(ptr, cap_list.head)
562		{
563		const struct Capability *cap = ptr->data;
564
565	<	if (IsCapable(target_p, cap->cap))
566	<	t += ircsprintf(t, "%s ", cap->name);
565	>	if (!IsCapable(target_p, cap->cap))
566	>	continue;
567	>
568	>	strlcat(msgbuf,       " ", sizeof(msgbuf));
569	>	strlcat(msgbuf, cap->name, sizeof(msgbuf));
570		}
953	–	#ifdef HAVE_LIBCRYPTO
954	–	if (IsCapable(target_p, CAP_ENC) &&
955	–	target_p->localClient->in_cipher &&
956	–	target_p->localClient->out_cipher)
957	–	t += ircsprintf(t, "ENC:%s ",
958	–	target_p->localClient->in_cipher->name);
959	–	#endif
960	–	*(t - 1) = '\0';
571
572	<	return(msgbuf);
572	>	return msgbuf;
573		}
574
575		/* make_server()
#	Line 973 | Line 583 | struct Server *
583		make_server(struct Client *client_p)
584		{
585		if (client_p->serv == NULL)
976	–	{
586		client_p->serv = MyMalloc(sizeof(struct Server));
978	–	client_p->serv->dep_servers = 1;
979	–	}
587
588		return client_p->serv;
589		}
590
984	–	/* server_estab()
985	–	*
986	–	* inputs       - pointer to a struct Client
987	–	* output       -
988	–	* side effects -
989	–	*/
990	–	void
991	–	server_estab(struct Client *client_p)
992	–	{
993	–	struct Client *target_p;
994	–	struct ConfItem *conf;
995	–	struct AccessItem *aconf=NULL;
996	–	char *host;
997	–	const char *inpath;
998	–	static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
999	–	dlink_node *m;
1000	–	dlink_node *ptr;
1001	–
1002	–	assert(client_p != NULL);
1003	–
1004	–	strlcpy(inpath_ip, get_client_name(client_p, SHOW_IP), sizeof(inpath_ip));
1005	–
1006	–	inpath = get_client_name(client_p, MASK_IP); /* "refresh" inpath with host */
1007	–	host   = client_p->name;
1008	–
1009	–	if ((conf = find_conf_name(&client_p->localClient->confs, host, SERVER_TYPE))
1010	–	== NULL)
1011	–	{
1012	–	/* This shouldn't happen, better tell the ops... -A1kmm */
1013	–	sendto_realops_flags(UMODE_ALL, L_ALL, "Warning: Lost connect{} block "
1014	–	"for server %s(this shouldn't happen)!", host);
1015	–	exit_client(client_p, &me, "Lost connect{} block!");
1016	–	return;
1017	–	}
1018	–
1019	–	MyFree(client_p->localClient->passwd);
1020	–	client_p->localClient->passwd = NULL;
1021	–
1022	–	/* Its got identd, since its a server */
1023	–	SetGotId(client_p);
1024	–
1025	–	/* If there is something in the serv_list, it might be this
1026	–	* connecting server..
1027	–	*/
1028	–	if (!ServerInfo.hub && serv_list.head)
1029	–	{
1030	–	if (client_p != serv_list.head->data || serv_list.head->next)
1031	–	{
1032	–	ServerStats->is_ref++;
1033	–	sendto_one(client_p, "ERROR :I'm a leaf not a hub");
1034	–	exit_client(client_p, &me, "I'm a leaf");
1035	–	return;
1036	–	}
1037	–	}
1038	–
1039	–	aconf = (struct AccessItem *)map_to_conf(conf);
1040	–
1041	–	if (IsUnknown(client_p) && !IsConfCryptLink(aconf))
1042	–	{
1043	–	/* jdc -- 1.  Use EmptyString(), not [0] index reference.
1044	–	*        2.  Check aconf->spasswd, not aconf->passwd.
1045	–	*/
1046	–	if (!EmptyString(aconf->spasswd))
1047	–	{
1048	–	/* only send ts6 format PASS if we have ts6 enabled */
1049	–	if (me.id[0] != '\0')               /* Send TS 6 form only if id */
1050	–	sendto_one(client_p, "PASS %s TS %d %s",
1051	–	aconf->spasswd, TS_CURRENT, me.id);
1052	–	else
1053	–	sendto_one(client_p, "PASS %s TS 5",
1054	–	aconf->spasswd);
1055	–	}
1056	–
1057	–	/* Pass my info to the new server
1058	–	*
1059	–	* If trying to negotiate LazyLinks, pass on CAP_LL
1060	–	* If this is a HUB, pass on CAP_HUB
1061	–	* Pass on ZIP if supported
1062	–	* Pass on TB if supported.
1063	–	* - Dianora
1064	–	*/
1065	–
1066	–	send_capabilities(client_p, aconf,
1067	–	(IsConfLazyLink(aconf) ? find_capability("LL") : 0)
1068	–	| (IsConfCompressed(aconf) ? find_capability("ZIP") : 0)
1069	–	| (IsConfTopicBurst(aconf) ? find_capability("TB") : 0)
1070	–	, 0);
1071	–
1072	–	/* SERVER is the last command sent before switching to ziplinks.
1073	–	* We set TCPNODELAY on the socket to make sure it gets sent out
1074	–	* on the wire immediately.  Otherwise, it could be sitting in
1075	–	* a kernel buffer when we start sending zipped data, and the
1076	–	* parser on the receiving side can't hand both unzipped and zipped
1077	–	* data in one packet. --Rodder
1078	–	*
1079	–	* currently we only need to call send_queued_write,
1080	–	* Nagle is already disabled at this point --adx
1081	–	*/
1082	–	sendto_one(client_p, "SERVER %s 1 :%s%s",
1083	–	my_name_for_link(conf),
1084	–	ConfigServerHide.hidden ? "(H) " : "",
1085	–	(me.info[0]) ? (me.info) : "IRCers United");
1086	–	send_queued_write(client_p);
1087	–	}
1088	–
1089	–	/* Hand the server off to servlink now */
1090	–	if (IsCapable(client_p, CAP_ENC) || IsCapable(client_p, CAP_ZIP))
1091	–	{
1092	–	if (fork_server(client_p) < 0)
1093	–	{
1094	–	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1095	–	"Warning: fork failed for server %s -- check servlink_path (%s)",
1096	–	get_client_name(client_p, HIDE_IP), ConfigFileEntry.servlink_path);
1097	–	sendto_realops_flags(UMODE_ALL, L_OPER, "Warning: fork failed for server "
1098	–	"%s -- check servlink_path (%s)",
1099	–	get_client_name(client_p, MASK_IP),
1100	–	ConfigFileEntry.servlink_path);
1101	–	exit_client(client_p, &me, "fork failed");
1102	–	return;
1103	–	}
1104	–
1105	–	start_io(client_p);
1106	–	SetServlink(client_p);
1107	–	}
1108	–
1109	–	/* only send ts6 format SVINFO if we have ts6 enabled */
1110	–	sendto_one(client_p, "SVINFO %d %d 0 :%lu",
1111	–	(me.id[0] ? TS_CURRENT : 5), TS_MIN,
1112	–	(unsigned long)CurrentTime);
1113	–
1114	–	/* assumption here is if they passed the correct TS version, they also passed an SID */
1115	–	if (IsCapable(client_p, CAP_TS6))
1116	–	hash_add_id(client_p);
1117	–
1118	–	/* XXX Does this ever happen? I don't think so -db */
1119	–	detach_conf(client_p, OPER_TYPE);
1120	–
1121	–	/* *WARNING*
1122	–	**    In the following code in place of plain server's
1123	–	**    name we send what is returned by get_client_name
1124	–	**    which may add the "sockhost" after the name. It's
1125	–	**    *very* *important* that there is a SPACE between
1126	–	**    the name and sockhost (if present). The receiving
1127	–	**    server will start the information field from this
1128	–	**    first blank and thus puts the sockhost into info.
1129	–	**    ...a bit tricky, but you have been warned, besides
1130	–	**    code is more neat this way...  --msa
1131	–	*/
1132	–	client_p->servptr = &me;
1133	–
1134	–	if (IsClosing(client_p))
1135	–	return;
1136	–
1137	–	SetServer(client_p);
1138	–
1139	–	/* Update the capability combination usage counts. -A1kmm */
1140	–	set_chcap_usage_counts(client_p);
1141	–
1142	–	/* Some day, all these lists will be consolidated *sigh* */
1143	–	dlinkAdd(client_p, &client_p->lnode, &me.serv->servers);
1144	–
1145	–	m = dlinkFind(&unknown_list, client_p);
1146	–	assert(NULL != m);
1147	–
1148	–	dlinkDelete(m, &unknown_list);
1149	–	dlinkAdd(client_p, m, &serv_list);
1150	–
1151	–	Count.myserver++;
1152	–
1153	–	dlinkAdd(client_p, make_dlink_node(), &global_serv_list);
1154	–	hash_add_client(client_p);
1155	–
1156	–	/* doesnt duplicate client_p->serv if allocated this struct already */
1157	–	make_server(client_p);
1158	–
1159	–	/* fixing eob timings.. -gnp */
1160	–	client_p->firsttime = CurrentTime;
1161	–
1162	–	/* Show the real host/IP to admins */
1163	–	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1164	–	"Link with %s established: (%s) link",
1165	–	inpath_ip,show_capabilities(client_p));
1166	–	/* Now show the masked hostname/IP to opers */
1167	–	sendto_realops_flags(UMODE_ALL, L_OPER,
1168	–	"Link with %s established: (%s) link",
1169	–	inpath,show_capabilities(client_p));
1170	–	ilog(L_NOTICE, "Link with %s established: (%s) link",
1171	–	inpath_ip, show_capabilities(client_p));
1172	–
1173	–	client_p->serv->sconf = conf;
1174	–
1175	–	if (HasServlink(client_p))
1176	–	{
1177	–	/* we won't overflow FD_DESC_SZ here, as it can hold
1178	–	* client_p->name + 64
1179	–	*/
1180	–	fd_note(&client_p->localClient->fd, "slink data: %s", client_p->name);
1181	–	fd_note(&client_p->localClient->ctrlfd, "slink ctrl: %s", client_p->name);
1182	–	}
1183	–	else
1184	–	fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
1185	–
1186	–	/* Old sendto_serv_but_one() call removed because we now
1187	–	** need to send different names to different servers
1188	–	** (domain name matching) Send new server to other servers.
1189	–	*/
1190	–	DLINK_FOREACH(ptr, serv_list.head)
1191	–	{
1192	–	target_p = ptr->data;
1193	–
1194	–	if (target_p == client_p)
1195	–	continue;
1196	–
1197	–	if ((conf = target_p->serv->sconf) &&
1198	–	match(my_name_for_link(conf), client_p->name))
1199	–	continue;
1200	–
1201	–	if (IsCapable(target_p, CAP_TS6) && HasID(client_p))
1202	–	sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
1203	–	me.id, client_p->name, client_p->id,
1204	–	IsHidden(client_p) ? "(H) " : "",
1205	–	client_p->info);
1206	–	else
1207	–	sendto_one(target_p,":%s SERVER %s 2 :%s%s",
1208	–	me.name, client_p->name,
1209	–	IsHidden(client_p) ? "(H) " : "",
1210	–	client_p->info);
1211	–	}
1212	–
1213	–	/* Pass on my client information to the new server
1214	–	**
1215	–	** First, pass only servers (idea is that if the link gets
1216	–	** cancelled beacause the server was already there,
1217	–	** there are no NICK's to be cancelled...). Of course,
1218	–	** if cancellation occurs, all this info is sent anyway,
1219	–	** and I guess the link dies when a read is attempted...? --msa
1220	–	**
1221	–	** Note: Link cancellation to occur at this point means
1222	–	** that at least two servers from my fragment are building
1223	–	** up connection this other fragment at the same time, it's
1224	–	** a race condition, not the normal way of operation...
1225	–	**
1226	–	** ALSO NOTE: using the get_client_name for server names--
1227	–	**    see previous *WARNING*!!! (Also, original inpath
1228	–	**    is destroyed...)
1229	–	*/
1230	–
1231	–	conf = client_p->serv->sconf;
1232	–
1233	–	DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
1234	–	{
1235	–	target_p = ptr->data;
1236	–
1237	–	/* target_p->from == target_p for target_p == client_p */
1238	–	if (target_p->from == client_p)
1239	–	continue;
1240	–
1241	–	if (match(my_name_for_link(conf), target_p->name))
1242	–	continue;
1243	–
1244	–	if (IsCapable(client_p, CAP_TS6))
1245	–	{
1246	–	if (HasID(target_p))
1247	–	sendto_one(client_p, ":%s SID %s %d %s :%s%s",
1248	–	ID(target_p->servptr), target_p->name, target_p->hopcount+1,
1249	–	target_p->id, IsHidden(target_p) ? "(H) " : "",
1250	–	target_p->info);
1251	–	else  /* introducing non-ts6 server */
1252	–	sendto_one(client_p, ":%s SERVER %s %d :%s%s",
1253	–	ID(target_p->servptr), target_p->name, target_p->hopcount+1,
1254	–	IsHidden(target_p) ? "(H) " : "", target_p->info);
1255	–	}
1256	–	else
1257	–	sendto_one(client_p, ":%s SERVER %s %d :%s%s",
1258	–	target_p->servptr->name, target_p->name, target_p->hopcount+1,
1259	–	IsHidden(target_p) ? "(H) " : "", target_p->info);
1260	–	}
1261	–
1262	–	if ((ServerInfo.hub == 0) && MyConnect(client_p))
1263	–	uplink = client_p;
1264	–
1265	–	server_burst(client_p);
1266	–	}
1267	–
1268	–	static void
1269	–	start_io(struct Client *server)
1270	–	{
1271	–	struct LocalUser *lserver = server->localClient;
1272	–	int alloclen = 1;
1273	–	char *buf;
1274	–	dlink_node *ptr;
1275	–	struct dbuf_block *block;
1276	–
1277	–	/* calculate how many bytes to allocate */
1278	–	if (IsCapable(server, CAP_ZIP))
1279	–	alloclen += 6;
1280	–	#ifdef HAVE_LIBCRYPTO
1281	–	if (IsCapable(server, CAP_ENC))
1282	–	alloclen += 16 + lserver->in_cipher->keylen + lserver->out_cipher->keylen;
1283	–	#endif
1284	–	alloclen += dbuf_length(&lserver->buf_recvq);
1285	–	alloclen += dlink_list_length(&lserver->buf_recvq.blocks) * 3;
1286	–	alloclen += dbuf_length(&lserver->buf_sendq);
1287	–	alloclen += dlink_list_length(&lserver->buf_sendq.blocks) * 3;
1288	–
1289	–	/* initialize servlink control sendq */
1290	–	lserver->slinkq = buf = MyMalloc(alloclen);
1291	–	lserver->slinkq_ofs = 0;
1292	–	lserver->slinkq_len = alloclen;
1293	–
1294	–	if (IsCapable(server, CAP_ZIP))
1295	–	{
1296	–	/* ziplink */
1297	–	*buf++ = SLINKCMD_SET_ZIP_OUT_LEVEL;
1298	–	*buf++ = 0; /* |          */
1299	–	*buf++ = 1; /* \ len is 1 */
1300	–	*buf++ = ConfigFileEntry.compression_level;
1301	–	*buf++ = SLINKCMD_START_ZIP_IN;
1302	–	*buf++ = SLINKCMD_START_ZIP_OUT;
1303	–	}
1304	–	#ifdef HAVE_LIBCRYPTO
1305	–	if (IsCapable(server, CAP_ENC))
1306	–	{
1307	–	/* Decryption settings */
1308	–	*buf++ = SLINKCMD_SET_CRYPT_IN_CIPHER;
1309	–	*buf++ = 0; /* /                     (upper 8-bits of len) */
1310	–	*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */
1311	–	*buf++ = lserver->in_cipher->cipherid;
1312	–	*buf++ = SLINKCMD_SET_CRYPT_IN_KEY;
1313	–	*buf++ = 0; /* keylen < 256 */
1314	–	*buf++ = lserver->in_cipher->keylen;
1315	–	memcpy(buf, lserver->in_key, lserver->in_cipher->keylen);
1316	–	buf += lserver->in_cipher->keylen;
1317	–	/* Encryption settings */
1318	–	*buf++ = SLINKCMD_SET_CRYPT_OUT_CIPHER;
1319	–	*buf++ = 0; /* /                     (upper 8-bits of len) */
1320	–	*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */
1321	–	*buf++ = lserver->out_cipher->cipherid;
1322	–	*buf++ = SLINKCMD_SET_CRYPT_OUT_KEY;
1323	–	*buf++ = 0; /* keylen < 256 */
1324	–	*buf++ = lserver->out_cipher->keylen;
1325	–	memcpy(buf, lserver->out_key, lserver->out_cipher->keylen);
1326	–	buf += lserver->out_cipher->keylen;
1327	–	*buf++ = SLINKCMD_START_CRYPT_IN;
1328	–	*buf++ = SLINKCMD_START_CRYPT_OUT;
1329	–	}
1330	–	#endif
1331	–
1332	–	/* pass the whole recvq to servlink */
1333	–	DLINK_FOREACH (ptr, lserver->buf_recvq.blocks.head)
1334	–	{
1335	–	block = ptr->data;
1336	–	*buf++ = SLINKCMD_INJECT_RECVQ;
1337	–	*buf++ = (block->size >> 8);
1338	–	*buf++ = (block->size & 0xff);
1339	–	memcpy(buf, &block->data[0], block->size);
1340	–	buf += block->size;
1341	–	}
1342	–	dbuf_clear(&lserver->buf_recvq);
1343	–
1344	–	/* pass the whole sendq to servlink */
1345	–	DLINK_FOREACH (ptr, lserver->buf_sendq.blocks.head)
1346	–	{
1347	–	block = ptr->data;
1348	–	*buf++ = SLINKCMD_INJECT_SENDQ;
1349	–	*buf++ = (block->size >> 8);
1350	–	*buf++ = (block->size & 0xff);
1351	–	memcpy(buf, &block->data[0], block->size);
1352	–	buf += block->size;
1353	–	}
1354	–	dbuf_clear(&lserver->buf_sendq);
1355	–
1356	–	/* start io */
1357	–	*buf++ = SLINKCMD_INIT;
1358	–
1359	–	/* schedule a write */
1360	–	send_queued_slink_write(server);
1361	–	}
1362	–
1363	–	/* fork_server()
1364	–	*
1365	–	* inputs       - struct Client *server
1366	–	* output       - success: 0 / failure: -1
1367	–	* side effect  - fork, and exec SERVLINK to handle this connection
1368	–	*/
1369	–	static int
1370	–	fork_server(struct Client *server)
1371	–	{
1372	–	#ifndef HAVE_SOCKETPAIR
1373	–	return -1;
1374	–	#else
1375	–	int i;
1376	–	int slink_fds[2][2];
1377	–	/* 0? - ctrl  | 1? - data
1378	–	* ?0 - child | ?1 - parent */
1379	–
1380	–	if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[0]) < 0)
1381	–	return -1;
1382	–	if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[1]) < 0)
1383	–	goto free_ctrl_fds;
1384	–
1385	–	if ((i = fork()) < 0)
1386	–	{
1387	–	close(slink_fds[1][0]);  close(slink_fds[1][1]);
1388	–	free_ctrl_fds:
1389	–	close(slink_fds[0][0]);  close(slink_fds[0][1]);
1390	–	return -1;
1391	–	}
1392	–
1393	–	if (i == 0)
1394	–	{
1395	–	char fd_str[3][6];   /* store 3x sizeof("65535") */
1396	–	char *kid_argv[7];
1397	–
1398	–	#ifdef O_ASYNC
1399	–	fcntl(server->localClient->fd.fd, F_SETFL,
1400	–	fcntl(server->localClient->fd.fd, F_GETFL, 0) & ~O_ASYNC);
1401	–	#endif
1402	–	close_fds(&server->localClient->fd);
1403	–	close(slink_fds[0][1]);
1404	–	close(slink_fds[1][1]);
1405	–
1406	–	sprintf(fd_str[0], "%d", slink_fds[0][0]);
1407	–	sprintf(fd_str[1], "%d", slink_fds[1][0]);
1408	–	sprintf(fd_str[2], "%d", server->localClient->fd.fd);
1409	–
1410	–	kid_argv[0] = "-slink";
1411	–	kid_argv[1] = kid_argv[2] = fd_str[0];  /* ctrl */
1412	–	kid_argv[3] = kid_argv[4] = fd_str[1];  /* data */
1413	–	kid_argv[5] = fd_str[2];    /* network */
1414	–	kid_argv[6] = NULL;
1415	–
1416	–	execv(ConfigFileEntry.servlink_path, kid_argv);
1417	–
1418	–	_exit(1);
1419	–	}
1420	–
1421	–	/* close the network fd and the child ends of the pipes */
1422	–	fd_close(&server->localClient->fd);
1423	–	close(slink_fds[0][0]);
1424	–	close(slink_fds[1][0]);
1425	–
1426	–	execute_callback(setup_socket_cb, slink_fds[0][1]);
1427	–	execute_callback(setup_socket_cb, slink_fds[1][1]);
1428	–
1429	–	fd_open(&server->localClient->ctrlfd, slink_fds[0][1], 1, "slink ctrl");
1430	–	fd_open(&server->localClient->fd, slink_fds[1][1], 1, "slink data");
1431	–
1432	–	read_ctrl_packet(&server->localClient->ctrlfd, server);
1433	–	read_packet(&server->localClient->fd, server);
1434	–
1435	–	return 0;
1436	–	#endif
1437	–	}
1438	–
1439	–	/* server_burst()
1440	–	*
1441	–	* inputs       - struct Client pointer server
1442	–	*              -
1443	–	* output       - none
1444	–	* side effects - send a server burst
1445	–	* bugs         - still too long
1446	–	*/
1447	–	static void
1448	–	server_burst(struct Client *client_p)
1449	–	{
1450	–	/* Send it in the shortened format with the TS, if
1451	–	** it's a TS server; walk the list of channels, sending
1452	–	** all the nicks that haven't been sent yet for each
1453	–	** channel, then send the channel itself -- it's less
1454	–	** obvious than sending all nicks first, but on the
1455	–	** receiving side memory will be allocated more nicely
1456	–	** saving a few seconds in the handling of a split
1457	–	** -orabidoo
1458	–	*/
1459	–
1460	–	/* On a "lazy link" hubs send nothing.
1461	–	* Leafs always have to send nicks plus channels
1462	–	*/
1463	–	if (IsCapable(client_p, CAP_LL))
1464	–	{
1465	–	if (!ServerInfo.hub)
1466	–	{
1467	–	/* burst all our info */
1468	–	burst_all(client_p);
1469	–
1470	–	/* Now, ask for channel info on all our current channels */
1471	–	cjoin_all(client_p);
1472	–	}
1473	–	}
1474	–	else
1475	–	{
1476	–	burst_all(client_p);
1477	–	}
1478	–
1479	–	/* EOB stuff is now in burst_all */
1480	–	/* Always send a PING after connect burst is done */
1481	–	sendto_one(client_p, "PING :%s", ID_or_name(&me, client_p));
1482	–	}
1483	–
1484	–	/* burst_all()
1485	–	*
1486	–	* inputs       - pointer to server to send burst to
1487	–	* output       - NONE
1488	–	* side effects - complete burst of channels/nicks is sent to client_p
1489	–	*/
1490	–	static void
1491	–	burst_all(struct Client *client_p)
1492	–	{
1493	–	struct Client *target_p;
1494	–	struct Channel *chptr;
1495	–	dlink_node *gptr;
1496	–	dlink_node *ptr;
1497	–
1498	–	DLINK_FOREACH(gptr, global_channel_list.head)
1499	–	{
1500	–	chptr = gptr->data;
1501	–
1502	–	if (dlink_list_length(&chptr->members) != 0)
1503	–	{
1504	–	burst_members(client_p, chptr);
1505	–	send_channel_modes(client_p, chptr);
1506	–	if (IsCapable(client_p, CAP_TB))
1507	–	send_tb(client_p, chptr);
1508	–	}
1509	–	}
1510	–
1511	–	/* also send out those that are not on any channel
1512	–	*/
1513	–	DLINK_FOREACH(ptr, global_client_list.head)
1514	–	{
1515	–	target_p = ptr->data;
1516	–
1517	–	if (!IsBursted(target_p) && target_p->from != client_p)
1518	–	sendnick_TS(client_p, target_p);
1519	–
1520	–	ClearBursted(target_p);
1521	–	}
1522	–
1523	–	/* We send the time we started the burst, and let the remote host determine an EOB time,
1524	–	** as otherwise we end up sending a EOB of 0   Sending here means it gets sent last -- fl
1525	–	*/
1526	–	/* Its simpler to just send EOB and use the time its been connected.. --fl_ */
1527	–	if (IsCapable(client_p, CAP_EOB))
1528	–	sendto_one(client_p, ":%s EOB", ID_or_name(&me, client_p));
1529	–	}
1530	–
1531	–	/*
1532	–	* send_tb
1533	–	*
1534	–	* inputs       - pointer to Client
1535	–	*              - pointer to channel
1536	–	* output       - NONE
1537	–	* side effects - Called on a server burst when
1538	–	*                server is CAP_TB capable
1539	–	*/
1540	–	static void
1541	–	send_tb(struct Client *client_p, struct Channel *chptr)
1542	–	{
1543	–	if (chptr->topic != NULL && IsCapable(client_p, CAP_TB))
1544	–	{
1545	–	if (ConfigChannel.burst_topicwho)
1546	–	{
1547	–	sendto_one(client_p, ":%s TB %s %lu %s :%s",
1548	–	me.name, chptr->chname,
1549	–	(unsigned long)chptr->topic_time,
1550	–	chptr->topic_info, chptr->topic);
1551	–	}
1552	–	else
1553	–	{
1554	–	sendto_one(client_p, ":%s TB %s %lu :%s",
1555	–	me.name, chptr->chname,
1556	–	(unsigned long)chptr->topic_time, chptr->topic);
1557	–	}
1558	–	}
1559	–	}
1560	–
1561	–	/* cjoin_all()
1562	–	*
1563	–	* inputs       - server to ask for channel info from
1564	–	* output       - NONE
1565	–	* side effects - CJOINS for all the leafs known channels is sent
1566	–	*/
1567	–	static void
1568	–	cjoin_all(struct Client *client_p)
1569	–	{
1570	–	const dlink_node *gptr = NULL;
1571	–
1572	–	DLINK_FOREACH(gptr, global_channel_list.head)
1573	–	{
1574	–	const struct Channel *chptr = gptr->data;
1575	–	sendto_one(client_p, ":%s CBURST %s",
1576	–	me.name, chptr->chname);
1577	–	}
1578	–	}
1579	–
1580	–	/* burst_channel()
1581	–	*
1582	–	* inputs       - pointer to server to send sjoins to
1583	–	*              - channel pointer
1584	–	* output       - none
1585	–	* side effects - All sjoins for channel(s) given by chptr are sent
1586	–	*                for all channel members. ONLY called by hub on
1587	–	*                behalf of a lazylink so client_p is always guarunteed
1588	–	*                to be a LL leaf.
1589	–	*/
1590	–	void
1591	–	burst_channel(struct Client *client_p, struct Channel *chptr)
1592	–	{
1593	–	burst_ll_members(client_p, chptr);
1594	–
1595	–	send_channel_modes(client_p, chptr);
1596	–	add_lazylinkchannel(client_p,chptr);
1597	–
1598	–	if (chptr->topic != NULL && chptr->topic_info != NULL)
1599	–	{
1600	–	sendto_one(client_p, ":%s TOPIC %s %s %lu :%s",
1601	–	me.name, chptr->chname, chptr->topic_info,
1602	–	(unsigned long)chptr->topic_time, chptr->topic);
1603	–	}
1604	–	}
1605	–
1606	–	/* add_lazlinkchannel()
1607	–	*
1608	–	* inputs       - pointer to directly connected leaf server
1609	–	*                being introduced to this hub
1610	–	*              - pointer to channel structure being introduced
1611	–	* output       - NONE
1612	–	* side effects - The channel pointed to by chptr is now known
1613	–	*                to be on lazyleaf server given by local_server_p.
1614	–	*                mark that in the bit map and add to the list
1615	–	*                of channels to examine after this newly introduced
1616	–	*                server is squit off.
1617	–	*/
1618	–	static void
1619	–	add_lazylinkchannel(struct Client *local_server_p, struct Channel *chptr)
1620	–	{
1621	–	assert(MyConnect(local_server_p));
1622	–
1623	–	chptr->lazyLinkChannelExists |= local_server_p->localClient->serverMask;
1624	–	dlinkAdd(chptr, make_dlink_node(), &lazylink_channels);
1625	–	}
1626	–
1627	–	/* add_lazylinkclient()
1628	–	*
1629	–	* inputs       - pointer to directly connected leaf server
1630	–	*                being introduced to this hub
1631	–	*              - pointer to client being introduced
1632	–	* output       - NONE
1633	–	* side effects - The client pointed to by client_p is now known
1634	–	*                to be on lazyleaf server given by local_server_p.
1635	–	*                mark that in the bit map and add to the list
1636	–	*                of clients to examine after this newly introduced
1637	–	*                server is squit off.
1638	–	*/
1639	–	void
1640	–	add_lazylinkclient(struct Client *local_server_p, struct Client *client_p)
1641	–	{
1642	–	assert(MyConnect(local_server_p));
1643	–	client_p->lazyLinkClientExists |= local_server_p->localClient->serverMask;
1644	–	}
1645	–
1646	–	/* remove_lazylink_flags()
1647	–	*
1648	–	* inputs       - pointer to server quitting
1649	–	* output       - NONE
1650	–	* side effects - All the channels on the lazylink channel list are examined
1651	–	*                If they hold a bit corresponding to the servermask
1652	–	*                attached to client_p, clear that bit. If this bitmask
1653	–	*                goes to 0, then the channel is no longer known to
1654	–	*                be on any lazylink server, and can be removed from the
1655	–	*                link list.
1656	–	*
1657	–	*                Similar is done for lazylink clients
1658	–	*
1659	–	*                This function must be run by the HUB on any exiting
1660	–	*                lazylink leaf server, while the pointer is still valid.
1661	–	*                Hence must be run from client.c in exit_one_client()
1662	–	*
1663	–	*                The old code scanned all channels, this code only
1664	–	*                scans channels/clients on the lazylink_channels
1665	–	*                lazylink_clients lists.
1666	–	*/
1667	–	void
1668	–	remove_lazylink_flags(unsigned long mask)
1669	–	{
1670	–	dlink_node *ptr;
1671	–	dlink_node *next_ptr;
1672	–	struct Channel *chptr;
1673	–	struct Client *target_p;
1674	–	unsigned long clear_mask;
1675	–
1676	–	if (!mask) /* On 0 mask, don't do anything */
1677	–	return;
1678	–
1679	–	clear_mask = ~mask;
1680	–	freeMask |= mask;
1681	–
1682	–	DLINK_FOREACH_SAFE(ptr, next_ptr, lazylink_channels.head)
1683	–	{
1684	–	chptr = ptr->data;
1685	–
1686	–	chptr->lazyLinkChannelExists &= clear_mask;
1687	–
1688	–	if (chptr->lazyLinkChannelExists == 0)
1689	–	{
1690	–	dlinkDelete(ptr, &lazylink_channels);
1691	–	free_dlink_node(ptr);
1692	–	}
1693	–	}
1694	–
1695	–	DLINK_FOREACH(ptr, global_client_list.head)
1696	–	{
1697	–	target_p = ptr->data;
1698	–	target_p->lazyLinkClientExists &= clear_mask;
1699	–	}
1700	–	}
1701	–
1702	–	/* burst_members()
1703	–	*
1704	–	* inputs       - pointer to server to send members to
1705	–	*              - dlink_list pointer to membership list to send
1706	–	* output       - NONE
1707	–	* side effects -
1708	–	*/
1709	–	static void
1710	–	burst_members(struct Client *client_p, struct Channel *chptr)
1711	–	{
1712	–	struct Client *target_p;
1713	–	struct Membership *ms;
1714	–	dlink_node *ptr;
1715	–
1716	–	DLINK_FOREACH(ptr, chptr->members.head)
1717	–	{
1718	–	ms       = ptr->data;
1719	–	target_p = ms->client_p;
1720	–
1721	–	if (!IsBursted(target_p))
1722	–	{
1723	–	SetBursted(target_p);
1724	–
1725	–	if (target_p->from != client_p)
1726	–	sendnick_TS(client_p, target_p);
1727	–	}
1728	–	}
1729	–	}
1730	–
1731	–	/* burst_ll_members()
1732	–	*
1733	–	* inputs       - pointer to server to send members to
1734	–	*              - dlink_list pointer to membership list to send
1735	–	* output       - NONE
1736	–	* side effects - This version also has to check the bitmap for lazylink
1737	–	*/
1738	–	static void
1739	–	burst_ll_members(struct Client *client_p, struct Channel *chptr)
1740	–	{
1741	–	struct Client *target_p;
1742	–	struct Membership *ms;
1743	–	dlink_node *ptr;
1744	–
1745	–	DLINK_FOREACH(ptr, chptr->members.head)
1746	–	{
1747	–	ms       = ptr->data;
1748	–	target_p = ms->client_p;
1749	–
1750	–	if ((target_p->lazyLinkClientExists & client_p->localClient->serverMask) == 0)
1751	–	{
1752	–	if (target_p->from != client_p)
1753	–	{
1754	–	add_lazylinkclient(client_p,target_p);
1755	–	sendnick_TS(client_p, target_p);
1756	–	}
1757	–	}
1758	–	}
1759	–	}
1760	–
1761	–	/* set_autoconn()
1762	–	*
1763	–	* inputs       - struct Client pointer to oper requesting change
1764	–	* output       - none
1765	–	* side effects - set autoconnect mode
1766	–	*/
1767	–	void
1768	–	set_autoconn(struct Client *source_p, const char *name, int newval)
1769	–	{
1770	–	struct ConfItem *conf;
1771	–	struct AccessItem *aconf;
1772	–
1773	–	if (name != NULL)
1774	–	{
1775	–	conf = find_exact_name_conf(SERVER_TYPE, name, NULL, NULL);
1776	–	if (conf != NULL)
1777	–	{
1778	–	aconf = (struct AccessItem *)map_to_conf(conf);
1779	–	if (newval)
1780	–	SetConfAllowAutoConn(aconf);
1781	–	else
1782	–	ClearConfAllowAutoConn(aconf);
1783	–
1784	–	sendto_realops_flags(UMODE_ALL, L_ALL,
1785	–	"%s has changed AUTOCONN for %s to %i",
1786	–	source_p->name, name, newval);
1787	–	sendto_one(source_p,
1788	–	":%s NOTICE %s :AUTOCONN for %s is now set to %i",
1789	–	me.name, source_p->name, name, newval);
1790	–	}
1791	–	else
1792	–	{
1793	–	sendto_one(source_p, ":%s NOTICE %s :Can't find %s",
1794	–	me.name, source_p->name, name);
1795	–	}
1796	–	}
1797	–	else
1798	–	{
1799	–	sendto_one(source_p, ":%s NOTICE %s :Please specify a server name!",
1800	–	me.name, source_p->name);
1801	–	}
1802	–	}
1803	–
1804	–	void
1805	–	initServerMask(void)
1806	–	{
1807	–	freeMask = 0xFFFFFFFFUL;
1808	–	}
1809	–
1810	–	/* nextFreeMask()
1811	–	*
1812	–	* inputs       - NONE
1813	–	* output       - unsigned long next unused mask for use in LL
1814	–	* side effects -
1815	–	*/
1816	–	unsigned long
1817	–	nextFreeMask(void)
1818	–	{
1819	–	int i;
1820	–	unsigned long mask = 1;
1821	–
1822	–	for (i = 0; i < 32; i++)
1823	–	{
1824	–	if (mask & freeMask)
1825	–	{
1826	–	freeMask &= ~mask;
1827	–	return(mask);
1828	–	}
1829	–
1830	–	mask <<= 1;
1831	–	}
1832	–
1833	–	return(0L); /* watch this special case ... */
1834	–	}
1835	–
591		/* New server connection code
592		* Based upon the stuff floating about in s_bsd.c
593		*   -- adrian
#	Line 1840 | Line 595 | nextFreeMask(void)
595
596		/* serv_connect() - initiate a server connection
597		*
598	<	* inputs       - pointer to conf
598	>	* inputs       - pointer to conf
599		*              - pointer to client doing the connect
600		* output       -
601		* side effects -
#	Line 1855 | Line 610 | nextFreeMask(void)
610		* it suceeded or not, and 0 if it fails in here somewhere.
611		*/
612		int
613	<	serv_connect(struct AccessItem *aconf, struct Client *by)
613	>	serv_connect(struct MaskItem *conf, struct Client *by)
614		{
615	<	struct ConfItem *conf;
616	<	struct Client *client_p;
1862	<	char buf[HOSTIPLEN];
615	>	struct Client *client_p = NULL;
616	>	char buf[HOSTIPLEN + 1] = "";
617
618		/* conversion structs */
619		struct sockaddr_in *v4;
1866	–	/* Make sure aconf is useful */
1867	–	assert(aconf != NULL);
620
621	<	if(aconf == NULL)
622	<	return (0);
621	>	/* Make sure conf is useful */
622	>	assert(conf);
623
624	<	/* XXX should be passing struct ConfItem in the first place */
625	<	conf = unmap_conf_item(aconf);
626	<
1875	<	/* log */
1876	<	irc_getnameinfo((struct sockaddr*)&aconf->ipnum, aconf->ipnum.ss_len,
1877	<	buf, HOSTIPLEN, NULL, 0, NI_NUMERICHOST);
1878	<	ilog(L_NOTICE, "Connect to %s[%s] @%s", aconf->user, aconf->host,
624	>	getnameinfo((struct sockaddr *)&conf->addr, conf->addr.ss_len,
625	>	buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
626	>	ilog(LOG_TYPE_IRCD, "Connect to %s[%s] @%s", conf->name, conf->host,
627		buf);
628
629		/* Still processing a DNS lookup? -> exit */
630	<	if (aconf->dns_query != NULL)
630	>	if (conf->dns_pending)
631	>	{
632	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
633	>	"Error connecting to %s: DNS lookup for connect{} in progress.",
634	>	conf->name);
635	>	return 0;
636	>	}
637	>
638	>	if (conf->dns_failed)
639		{
640	<	sendto_realops_flags(UMODE_ALL, L_OPER,
641	<	"Error connecting to %s: Error during DNS lookup", conf->name);
642	<	return (0);
640	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
641	>	"Error connecting to %s: DNS lookup for connect{} failed.",
642	>	conf->name);
643	>	return 0;
644		}
645
646		/* Make sure this server isn't already connected
647	<	* Note: aconf should ALWAYS be a valid C: line
647	>	* Note: conf should ALWAYS be a valid C: line
648		*/
649	<	if ((client_p = find_server(conf->name)) != NULL)
650	<	{
651	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
652	<	"Server %s already present from %s",
653	<	conf->name, get_client_name(client_p, SHOW_IP));
654	<	sendto_realops_flags(UMODE_ALL, L_OPER,
655	<	"Server %s already present from %s",
656	<	conf->name, get_client_name(client_p, MASK_IP));
649	>	if ((client_p = hash_find_server(conf->name)))
650	>	{
651	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
652	>	"Server %s already present from %s",
653	>	conf->name, get_client_name(client_p, SHOW_IP));
654	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
655	>	"Server %s already present from %s",
656	>	conf->name, get_client_name(client_p, MASK_IP));
657		if (by && IsClient(by) && !MyClient(by))
658	<	sendto_one(by, ":%s NOTICE %s :Server %s already present from %s",
659	<	me.name, by->name, conf->name,
660	<	get_client_name(client_p, MASK_IP));
1904	<	return (0);
658	>	sendto_one_notice(by, &me, ":Server %s already present from %s",
659	>	conf->name, get_client_name(client_p, MASK_IP));
660	>	return 0;
661		}
662	<
662	>
663		/* Create a local client */
664		client_p = make_client(NULL);
665
666		/* Copy in the server, hostname, fd */
667		strlcpy(client_p->name, conf->name, sizeof(client_p->name));
668	<	strlcpy(client_p->host, aconf->host, sizeof(client_p->host));
668	>	strlcpy(client_p->host, conf->host, sizeof(client_p->host));
669
670		/* We already converted the ip once, so lets use it - stu */
671	<	strlcpy(client_p->sockhost, buf, HOSTIPLEN);
671	>	strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
672
673	<	/* create a socket for the server connection */
674	<	if (comm_open(&client_p->localClient->fd, aconf->ipnum.ss.ss_family,
673	>	/* create a socket for the server connection */
674	>	if (comm_open(&client_p->localClient->fd, conf->addr.ss.ss_family,
675		SOCK_STREAM, 0, NULL) < 0)
676		{
677		/* Eek, failure to create the socket */
678	<	report_error(L_ALL,
679	<	"opening stream socket to %s: %s", conf->name, errno);
678	>	report_error(L_ALL, "opening stream socket to %s: %s",
679	>	conf->name, errno);
680		SetDead(client_p);
681	<	exit_client(client_p, &me, "Connection failed");
682	<	return (0);
681	>	exit_client(client_p, "Connection failed");
682	>	return 0;
683		}
684
685		/* servernames are always guaranteed under HOSTLEN chars */
#	Line 1932 | Line 688 | serv_connect(struct AccessItem *aconf, s
688		/* Attach config entries to client here rather than in
689		* serv_connect_callback(). This to avoid null pointer references.
690		*/
691	<	if (!attach_connect_block(client_p, conf->name, aconf->host))
691	>	if (!attach_connect_block(client_p, conf->name, conf->host))
692		{
693	<	sendto_realops_flags(UMODE_ALL, L_ALL,
694	<	"Host %s is not enabled for connecting:no C/N-line",
695	<	conf->name);
696	<	if (by && IsClient(by) && !MyClient(by))
697	<	sendto_one(by, ":%s NOTICE %s :Connect to host %s failed.",
698	<	me.name, by->name, client_p->name);
693	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
694	>	"Host %s is not enabled for connecting: no connect{} block",
695	>	conf->name);
696	>	if (by && IsClient(by) && !MyClient(by))
697	>	sendto_one_notice(by, &me, ":Connect to host %s failed.", client_p->name);
698	>
699		SetDead(client_p);
700	<	exit_client(client_p, client_p, "Connection failed");
701	<	return (0);
700	>	exit_client(client_p, "Connection failed");
701	>	return 0;
702		}
703
704		/* at this point we have a connection in progress and C/N lines
#	Line 1961 | Line 717 | serv_connect(struct AccessItem *aconf, s
717		SetConnecting(client_p);
718		dlinkAdd(client_p, &client_p->node, &global_client_list);
719		/* from def_fam */
720	<	client_p->localClient->aftype = aconf->aftype;
720	>	client_p->localClient->aftype = conf->aftype;
721
722		/* Now, initiate the connection */
723	<	/* XXX assume that a non 0 type means a specific bind address
723	>	/* XXX assume that a non 0 type means a specific bind address
724		* for this connect.
725		*/
726	<	switch (aconf->aftype)
726	>	switch (conf->aftype)
727		{
728		case AF_INET:
729	<	v4 = (struct sockaddr_in*)&aconf->my_ipnum;
730	<	if (v4->sin_addr.s_addr != 0)
729	>	v4 = (struct sockaddr_in*)&conf->bind;
730	>	if (v4->sin_addr.s_addr)
731		{
732		struct irc_ssaddr ipn;
733		memset(&ipn, 0, sizeof(struct irc_ssaddr));
734		ipn.ss.ss_family = AF_INET;
735		ipn.ss_port = 0;
736	<	memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr));
737	<	comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
738	<	(struct sockaddr *)&ipn, ipn.ss_len,
739	<	serv_connect_callback, client_p, aconf->aftype,
740	<	CONNECTTIMEOUT);
736	>	memcpy(&ipn, &conf->bind, sizeof(struct irc_ssaddr));
737	>	comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
738	>	(struct sockaddr *)&ipn, ipn.ss_len,
739	>	serv_connect_callback, client_p, conf->aftype,
740	>	CONNECTTIMEOUT);
741		}
742		else if (ServerInfo.specific_ipv4_vhost)
743		{
#	Line 1990 | Line 746 | serv_connect(struct AccessItem *aconf, s
746		ipn.ss.ss_family = AF_INET;
747		ipn.ss_port = 0;
748		memcpy(&ipn, &ServerInfo.ip, sizeof(struct irc_ssaddr));
749	<	comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
749	>	comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
750		(struct sockaddr *)&ipn, ipn.ss_len,
751	<	serv_connect_callback, client_p, aconf->aftype,
752	<	CONNECTTIMEOUT);
751	>	serv_connect_callback, client_p, conf->aftype,
752	>	CONNECTTIMEOUT);
753		}
754		else
755	<	comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
756	<	NULL, 0, serv_connect_callback, client_p, aconf->aftype,
755	>	comm_connect_tcp(&client_p->localClient->fd, conf->host, conf->port,
756	>	NULL, 0, serv_connect_callback, client_p, conf->aftype,
757		CONNECTTIMEOUT);
758		break;
759		#ifdef IPV6
760		case AF_INET6:
761		{
762	<	struct irc_ssaddr ipn;
763	<	struct sockaddr_in6 *v6;
764	<	struct sockaddr_in6 *v6conf;
765	<
766	<	memset(&ipn, 0, sizeof(struct irc_ssaddr));
767	<	v6conf = (struct sockaddr_in6 *)&aconf->my_ipnum;
768	<	v6 = (struct sockaddr_in6 *)&ipn;
769	<
770	<	if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr,
2015	<	sizeof(struct in6_addr)) != 0)
2016	<	{
2017	<	memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr));
2018	<	ipn.ss.ss_family = AF_INET6;
2019	<	ipn.ss_port = 0;
2020	<	comm_connect_tcp(&client_p->localClient->fd,
2021	<	aconf->host, aconf->port,
2022	<	(struct sockaddr *)&ipn, ipn.ss_len,
2023	<	serv_connect_callback, client_p,
2024	<	aconf->aftype, CONNECTTIMEOUT);
2025	<	}
2026	<	else if (ServerInfo.specific_ipv6_vhost)
762	>	struct irc_ssaddr ipn;
763	>	struct sockaddr_in6 *v6;
764	>	struct sockaddr_in6 *v6conf;
765	>
766	>	memset(&ipn, 0, sizeof(struct irc_ssaddr));
767	>	v6conf = (struct sockaddr_in6 *)&conf->bind;
768	>	v6 = (struct sockaddr_in6 *)&ipn;
769	>
770	>	if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr, sizeof(struct in6_addr)))
771		{
772	<	memcpy(&ipn, &ServerInfo.ip6, sizeof(struct irc_ssaddr));
773	<	ipn.ss.ss_family = AF_INET6;
774	<	ipn.ss_port = 0;
775	<	comm_connect_tcp(&client_p->localClient->fd,
776	<	aconf->host, aconf->port,
777	<	(struct sockaddr *)&ipn, ipn.ss_len,
778	<	serv_connect_callback, client_p,
779	<	aconf->aftype, CONNECTTIMEOUT);
780	<	}
781	<	else
782	<	comm_connect_tcp(&client_p->localClient->fd,
783	<	aconf->host, aconf->port,
784	<	NULL, 0, serv_connect_callback, client_p,
785	<	aconf->aftype, CONNECTTIMEOUT);
772	>	memcpy(&ipn, &conf->bind, sizeof(struct irc_ssaddr));
773	>	ipn.ss.ss_family = AF_INET6;
774	>	ipn.ss_port = 0;
775	>	comm_connect_tcp(&client_p->localClient->fd,
776	>	conf->host, conf->port,
777	>	(struct sockaddr *)&ipn, ipn.ss_len,
778	>	serv_connect_callback, client_p,
779	>	conf->aftype, CONNECTTIMEOUT);
780	>	}
781	>	else if (ServerInfo.specific_ipv6_vhost)
782	>	{
783	>	memcpy(&ipn, &ServerInfo.ip6, sizeof(struct irc_ssaddr));
784	>	ipn.ss.ss_family = AF_INET6;
785	>	ipn.ss_port = 0;
786	>	comm_connect_tcp(&client_p->localClient->fd,
787	>	conf->host, conf->port,
788	>	(struct sockaddr *)&ipn, ipn.ss_len,
789	>	serv_connect_callback, client_p,
790	>	conf->aftype, CONNECTTIMEOUT);
791	>	}
792	>	else
793	>	comm_connect_tcp(&client_p->localClient->fd,
794	>	conf->host, conf->port,
795	>	NULL, 0, serv_connect_callback, client_p,
796	>	conf->aftype, CONNECTTIMEOUT);
797		}
798		#endif
799		}
800	<	return (1);
800	>	return 1;
801	>	}
802	>
803	>	#ifdef HAVE_LIBCRYPTO
804	>	static void
805	>	finish_ssl_server_handshake(struct Client *client_p)
806	>	{
807	>	struct MaskItem *conf = NULL;
808	>
809	>	conf = find_conf_name(&client_p->localClient->confs,
810	>	client_p->name, CONF_SERVER);
811	>	if (conf == NULL)
812	>	{
813	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
814	>	"Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
815	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
816	>	"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
817	>
818	>	exit_client(client_p, "Lost connect{} block");
819	>	return;
820	>	}
821	>
822	>	sendto_one(client_p, "PASS %s TS %d %s", conf->spasswd, TS_CURRENT, me.id);
823	>
824	>	send_capabilities(client_p, 0);
825	>
826	>	sendto_one(client_p, "SERVER %s 1 :%s%s",
827	>	me.name, ConfigServerHide.hidden ? "(H) " : "",
828	>	me.info);
829	>
830	>	/* If we've been marked dead because a send failed, just exit
831	>	* here now and save everyone the trouble of us ever existing.
832	>	*/
833	>	if (IsDead(client_p))
834	>	{
835	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
836	>	"%s[%s] went dead during handshake",
837	>	client_p->name,
838	>	client_p->host);
839	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
840	>	"%s went dead during handshake", client_p->name);
841	>	return;
842	>	}
843	>
844	>	/* don't move to serv_list yet -- we haven't sent a burst! */
845	>	/* If we get here, we're ok, so lets start reading some data */
846	>	comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ, read_packet, client_p, 0);
847	>	}
848	>
849	>	static void
850	>	ssl_server_handshake(fde_t *fd, struct Client *client_p)
851	>	{
852	>	X509 *cert = NULL;
853	>	int ret = 0;
854	>
855	>	if ((ret = SSL_connect(client_p->localClient->fd.ssl)) <= 0)
856	>	{
857	>	switch (SSL_get_error(client_p->localClient->fd.ssl, ret))
858	>	{
859	>	case SSL_ERROR_WANT_WRITE:
860	>	comm_setselect(&client_p->localClient->fd, COMM_SELECT_WRITE,
861	>	(PF *)ssl_server_handshake, client_p, 0);
862	>	return;
863	>	case SSL_ERROR_WANT_READ:
864	>	comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ,
865	>	(PF *)ssl_server_handshake, client_p, 0);
866	>	return;
867	>	default:
868	>	{
869	>	const char *sslerr = ERR_error_string(ERR_get_error(), NULL);
870	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
871	>	"Error connecting to %s: %s", client_p->name,
872	>	sslerr ? sslerr : "unknown SSL error");
873	>	exit_client(client_p, "Error during SSL handshake");
874	>	return;
875	>	}
876	>	}
877	>	}
878	>
879	>	if ((cert = SSL_get_peer_certificate(client_p->localClient->fd.ssl)))
880	>	{
881	>	int res = SSL_get_verify_result(client_p->localClient->fd.ssl);
882	>	char buf[EVP_MAX_MD_SIZE * 2 + 1] = { '\0' };
883	>	unsigned char md[EVP_MAX_MD_SIZE] = { '\0' };
884	>
885	>	if (res == X509_V_OK || res == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN ||
886	>	res == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE ||
887	>	res == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
888	>	{
889	>	unsigned int i = 0, n = 0;
890	>
891	>	if (X509_digest(cert, EVP_sha256(), md, &n))
892	>	{
893	>	for (; i < n; ++i)
894	>	snprintf(buf + 2 * i, 3, "%02X", md[i]);
895	>	client_p->certfp = xstrdup(buf);
896	>	}
897	>	}
898	>	else
899	>	ilog(LOG_TYPE_IRCD, "Server %s!%s@%s gave bad SSL client certificate: %d",
900	>	client_p->name, client_p->username, client_p->host, res);
901	>	X509_free(cert);
902	>	}
903	>
904	>	finish_ssl_server_handshake(client_p);
905		}
906
907	+	static void
908	+	ssl_connect_init(struct Client *client_p, struct MaskItem *conf, fde_t *fd)
909	+	{
910	+	if ((client_p->localClient->fd.ssl = SSL_new(ServerInfo.client_ctx)) == NULL)
911	+	{
912	+	ilog(LOG_TYPE_IRCD, "SSL_new() ERROR! -- %s",
913	+	ERR_error_string(ERR_get_error(), NULL));
914	+	SetDead(client_p);
915	+	exit_client(client_p, "SSL_new failed");
916	+	return;
917	+	}
918	+
919	+	SSL_set_fd(fd->ssl, fd->fd);
920	+
921	+	if (!EmptyString(conf->cipher_list))
922	+	SSL_set_cipher_list(client_p->localClient->fd.ssl, conf->cipher_list);
923	+
924	+	ssl_server_handshake(NULL, client_p);
925	+	}
926	+	#endif
927	+
928		/* serv_connect_callback() - complete a server connection.
929	<	*
929	>	*
930		* This routine is called after the server connection attempt has
931		* completed. If unsucessful, an error is sent to ops and the client
932		* is closed. If sucessful, it goes through the initialisation/check
#	Line 2057 | Line 937 | static void
937		serv_connect_callback(fde_t *fd, int status, void *data)
938		{
939		struct Client *client_p = data;
940	<	struct ConfItem *conf=NULL;
2061	<	struct AccessItem *aconf=NULL;
940	>	struct MaskItem *conf = NULL;
941
942		/* First, make sure its a real client! */
943	<	assert(client_p != NULL);
943	>	assert(client_p);
944		assert(&client_p->localClient->fd == fd);
945
946		/* Next, for backward purposes, record the ip of the server */
947		memcpy(&client_p->localClient->ip, &fd->connect.hostaddr,
948		sizeof(struct irc_ssaddr));
949	+
950		/* Check the status */
951		if (status != COMM_OK)
952		{
#	Line 2074 | Line 954 | serv_connect_callback(fde_t *fd, int sta
954		* Admins get to see any IP, mere opers don't *sigh*
955		*/
956		if (ConfigServerHide.hide_server_ips)
957	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
957	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
958		"Error connecting to %s: %s",
959		client_p->name, comm_errstr(status));
960		else
961	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
962	<	"Error connecting to %s[%s]: %s", client_p->name,
963	<	client_p->host, comm_errstr(status));
964	<
965	<	sendto_realops_flags(UMODE_ALL, L_OPER,
966	<	"Error connecting to %s: %s",
967	<	client_p->name, comm_errstr(status));
961	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
962	>	"Error connecting to %s[%s]: %s", client_p->name,
963	>	client_p->host, comm_errstr(status));
964	>
965	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
966	>	"Error connecting to %s: %s",
967	>	client_p->name, comm_errstr(status));
968
969		/* If a fd goes bad, call dead_link() the socket is no
970		* longer valid for reading or writing.
#	Line 2096 | Line 976 | serv_connect_callback(fde_t *fd, int sta
976		/* COMM_OK, so continue the connection procedure */
977		/* Get the C/N lines */
978		conf = find_conf_name(&client_p->localClient->confs,
979	<	client_p->name, SERVER_TYPE);
979	>	client_p->name, CONF_SERVER);
980		if (conf == NULL)
981		{
982	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
983	<	"Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
984	<	sendto_realops_flags(UMODE_ALL, L_OPER,
985	<	"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
982	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
983	>	"Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
984	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
985	>	"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
986
987	<	exit_client(client_p, &me, "Lost connect{} block");
987	>	exit_client(client_p, "Lost connect{} block");
988		return;
989		}
990
2111	–	aconf = (struct AccessItem *)map_to_conf(conf);
991		/* Next, send the initial handshake */
992		SetHandshake(client_p);
993
994		#ifdef HAVE_LIBCRYPTO
995	<	/* Handle all CRYPTLINK links in cryptlink_init */
2117	<	if (IsConfCryptLink(aconf))
995	>	if (IsConfSSL(conf))
996		{
997	<	cryptlink_init(client_p, conf, fd);
997	>	ssl_connect_init(client_p, conf, fd);
998		return;
999		}
1000		#endif
1001
1002	<	/* jdc -- Check and send spasswd, not passwd. */
2125	<	if (!EmptyString(aconf->spasswd) && (me.id[0] != '\0'))
2126	<	/* Send TS 6 form only if id */
2127	<	sendto_one(client_p, "PASS %s TS %d %s",
2128	<	aconf->spasswd, TS_CURRENT, me.id);
2129	<	else
2130	<	sendto_one(client_p, "PASS %s TS 5",
2131	<	aconf->spasswd);
1002	>	sendto_one(client_p, "PASS %s TS %d %s", conf->spasswd, TS_CURRENT, me.id);
1003
1004	<	/* Pass my info to the new server
2134	<	*
2135	<	* If trying to negotiate LazyLinks, pass on CAP_LL
2136	<	* If this is a HUB, pass on CAP_HUB
2137	<	* Pass on ZIP if supported
2138	<	* Pass on TB if supported.
2139	<	* - Dianora
2140	<	*/
2141	<	send_capabilities(client_p, aconf,
2142	<	(IsConfLazyLink(aconf) ? find_capability("LL") : 0)
2143	<	| (IsConfCompressed(aconf) ? find_capability("ZIP") : 0)
2144	<	| (IsConfTopicBurst(aconf) ? find_capability("TB") : 0)
2145	<	, 0);
1004	>	send_capabilities(client_p, 0);
1005
1006	<	sendto_one(client_p, "SERVER %s 1 :%s%s",
1007	<	my_name_for_link(conf),
2149	<	ConfigServerHide.hidden ? "(H) " : "",
2150	<	me.info);
1006	>	sendto_one(client_p, "SERVER %s 1 :%s%s", me.name,
1007	>	ConfigServerHide.hidden ? "(H) " : "", me.info);
1008
1009		/* If we've been marked dead because a send failed, just exit
1010		* here now and save everyone the trouble of us ever existing.
1011		*/
1012	<	if (IsDead(client_p))
1012	>	if (IsDead(client_p))
1013		{
1014	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1015	<	"%s[%s] went dead during handshake",
1014	>	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
1015	>	"%s[%s] went dead during handshake",
1016		client_p->name,
1017	<	client_p->host);
1018	<	sendto_realops_flags(UMODE_ALL, L_OPER,
1019	<	"%s went dead during handshake", client_p->name);
1017	>	client_p->host);
1018	>	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
1019	>	"%s went dead during handshake", client_p->name);
1020		return;
1021		}
1022
#	Line 2179 | Line 1036 | find_servconn_in_progress(const char *na
1036		cptr = ptr->data;
1037
1038		if (cptr && cptr->name[0])
1039	<	if (match(cptr->name, name) || match(name, cptr->name))
1039	>	if (!match(name, cptr->name))
1040		return cptr;
1041		}
2185	–
2186	–	return NULL;
2187	–	}
2188	–
2189	–	#ifdef HAVE_LIBCRYPTO
2190	–	/*
2191	–	* sends a CRYPTLINK SERV command.
2192	–	*/
2193	–	void
2194	–	cryptlink_init(struct Client *client_p, struct ConfItem *conf, fde_t *fd)
2195	–	{
2196	–	struct AccessItem *aconf;
2197	–	char *encrypted;
2198	–	unsigned char *key_to_send;
2199	–	char randkey[CIPHERKEYLEN];
2200	–	int enc_len;
2201	–
2202	–	/* get key */
2203	–	if ((!ServerInfo.rsa_private_key) ||
2204	–	(!RSA_check_key(ServerInfo.rsa_private_key)) )
2205	–	{
2206	–	cryptlink_error(client_p, "SERV", "Invalid RSA private key",
2207	–	"Invalid RSA private key");
2208	–	return;
2209	–	}
2210	–
2211	–	aconf = (struct AccessItem *)map_to_conf(conf);
2212	–
2213	–	if (aconf->rsa_public_key == NULL)
2214	–	{
2215	–	cryptlink_error(client_p, "SERV", "Invalid RSA public key",
2216	–	"Invalid RSA public key");
2217	–	return;
2218	–	}
2219	–
2220	–	if (get_randomness((unsigned char *)randkey, CIPHERKEYLEN) != 1)
2221	–	{
2222	–	cryptlink_error(client_p, "SERV", "Couldn't generate keyphrase",
2223	–	"Couldn't generate keyphrase");
2224	–	return;
2225	–	}
2226	–
2227	–	encrypted = MyMalloc(RSA_size(ServerInfo.rsa_private_key));
2228	–	enc_len   = RSA_public_encrypt(CIPHERKEYLEN,
2229	–	(unsigned char *)randkey,
2230	–	(unsigned char *)encrypted,
2231	–	aconf->rsa_public_key,
2232	–	RSA_PKCS1_PADDING);
2233	–
2234	–	memcpy(client_p->localClient->in_key, randkey, CIPHERKEYLEN);
2235	–
2236	–	if (enc_len <= 0)
2237	–	{
2238	–	report_crypto_errors();
2239	–	MyFree(encrypted);
2240	–	cryptlink_error(client_p, "SERV", "Couldn't encrypt data",
2241	–	"Couldn't encrypt data");
2242	–	return;
2243	–	}
2244	–
2245	–	if (!(base64_block(&key_to_send, encrypted, enc_len)))
2246	–	{
2247	–	MyFree(encrypted);
2248	–	cryptlink_error(client_p, "SERV", "Couldn't base64 encode key",
2249	–	"Couldn't base64 encode key");
2250	–	return;
2251	–	}
2252	–
2253	–	send_capabilities(client_p, aconf,
2254	–	(IsConfLazyLink(aconf) ? find_capability("LL") : 0)
2255	–	| (IsConfCompressed(aconf) ? find_capability("ZIP") : 0)
2256	–	| (IsConfTopicBurst(aconf) ? find_capability("TB") : 0)
2257	–	, CAP_ENC_MASK);
2258	–
2259	–	sendto_one(client_p, "CRYPTLINK SERV %s %s :%s%s",
2260	–	my_name_for_link(conf), key_to_send,
2261	–	ConfigServerHide.hidden ? "(H) " : "", me.info);
2262	–
2263	–	SetHandshake(client_p);
2264	–	SetWaitAuth(client_p);
2265	–
2266	–	MyFree(encrypted);
2267	–	MyFree(key_to_send);
2268	–
2269	–	if (IsDead(client_p))
2270	–	cryptlink_error(client_p, "SERV", "Went dead during handshake",
2271	–	"Went dead during handshake");
2272	–	else if (fd != NULL)
2273	–	/* If we get here, we're ok, so lets start reading some data */
2274	–	comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0);
2275	–	}
1042
1043	<	void
2278	<	cryptlink_error(struct Client *client_p, const char *type,
2279	<	const char *reason, const char *client_reason)
2280	<	{
2281	<	sendto_realops_flags(UMODE_ALL, L_ADMIN, "%s: CRYPTLINK %s error - %s",
2282	<	get_client_name(client_p, SHOW_IP), type, reason);
2283	<	sendto_realops_flags(UMODE_ALL, L_OPER,  "%s: CRYPTLINK %s error - %s",
2284	<	get_client_name(client_p, MASK_IP), type, reason);
2285	<	ilog(L_ERROR, "%s: CRYPTLINK %s error - %s",
2286	<	get_client_name(client_p, SHOW_IP), type, reason);
2287	<
2288	<	/* If client_reason isn't NULL, then exit the client with the message
2289	<	* defined in the call.
2290	<	*/
2291	<	if ((client_reason != NULL) && (!IsDead(client_p)))
2292	<	exit_client(client_p, &me, client_reason);
2293	<	}
2294	<
2295	<	static char base64_chars[] =
2296	<	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
2297	<
2298	<	static char base64_values[] =
2299	<	{
2300	<	/* 00-15   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2301	<	/* 16-31   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2302	<	/* 32-47   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
2303	<	/* 48-63   */ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1,  0, -1, -1,
2304	<	/* 64-79   */ -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
2305	<	/* 80-95   */ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
2306	<	/* 96-111  */ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
2307	<	/* 112-127 */ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
2308	<	/* 128-143 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2309	<	/* 144-159 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2310	<	/* 160-175 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2311	<	/* 186-191 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2312	<	/* 192-207 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2313	<	/* 208-223 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2314	<	/* 224-239 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2315	<	/* 240-255 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
2316	<	};
2317	<
2318	<	/*
2319	<	* base64_block will allocate and return a new block of memory
2320	<	* using MyMalloc().  It should be freed after use.
2321	<	*/
2322	<	int
2323	<	base64_block(unsigned char **output, char *data, int len)
2324	<	{
2325	<	unsigned char *out;
2326	<	unsigned char *in = (unsigned char*)data;
2327	<	unsigned long int q_in;
2328	<	int i;
2329	<	int count = 0;
2330	<
2331	<	out = MyMalloc(((((len + 2) - ((len + 2) % 3)) / 3) * 4) + 1);
2332	<
2333	<	/* process 24 bits at a time */
2334	<	for( i = 0; i < len; i += 3)
2335	<	{
2336	<	q_in = 0;
2337	<
2338	<	if ( i + 2 < len )
2339	<	{
2340	<	q_in  = (in[i+2] & 0xc0) << 2;
2341	<	q_in |=  in[i+2];
2342	<	}
2343	<
2344	<	if ( i + 1 < len )
2345	<	{
2346	<	q_in |= (in[i+1] & 0x0f) << 10;
2347	<	q_in |= (in[i+1] & 0xf0) << 12;
2348	<	}
2349	<
2350	<	q_in |= (in[i]   & 0x03) << 20;
2351	<	q_in |=  in[i]           << 22;
2352	<
2353	<	q_in &= 0x3f3f3f3f;
2354	<
2355	<	out[count++] = base64_chars[((q_in >> 24)       )];
2356	<	out[count++] = base64_chars[((q_in >> 16) & 0xff)];
2357	<	out[count++] = base64_chars[((q_in >>  8) & 0xff)];
2358	<	out[count++] = base64_chars[((q_in      ) & 0xff)];
2359	<	}
2360	<	if ( (i - len) > 0 )
2361	<	{
2362	<	out[count-1] = '=';
2363	<	if ( (i - len) > 1 )
2364	<	out[count-2] = '=';
2365	<	}
2366	<
2367	<	out[count] = '\0';
2368	<	*output = out;
2369	<	return (count);
2370	<	}
2371	<
2372	<	/*
2373	<	* unbase64_block will allocate and return a new block of memory
2374	<	* using MyMalloc().  It should be freed after use.
2375	<	*/
2376	<	int
2377	<	unbase64_block(unsigned char **output, char *data, int len)
2378	<	{
2379	<	unsigned char *out;
2380	<	unsigned char *in = (unsigned char*)data;
2381	<	unsigned long int q_in;
2382	<	int i;
2383	<	int count = 0;
2384	<
2385	<	if ((len % 4) != 0)
2386	<	return (0);
2387	<
2388	<	out = MyMalloc(((len / 4) * 3) + 1);
2389	<
2390	<	/* process 32 bits at a time */
2391	<	for( i = 0; (i + 3) < len; i+=4)
2392	<	{
2393	<	/* compress input (chars a, b, c and d) as follows:
2394	<	* (after converting ascii -> base64 value)
2395	<	*
2396	<	* |00000000aaaaaabbbbbbccccccdddddd|
2397	<	* |  765432  107654  321076  543210|
2398	<	*/
2399	<
2400	<	q_in = 0;
2401	<
2402	<	if (base64_values[in[i+3]] > -1)
2403	<	q_in |= base64_values[in[i+3]]      ;
2404	<	if (base64_values[in[i+2]] > -1)
2405	<	q_in |= base64_values[in[i+2]] <<  6;
2406	<	if (base64_values[in[i+1]] > -1)
2407	<	q_in |= base64_values[in[i+1]] << 12;
2408	<	if (base64_values[in[i  ]] > -1)
2409	<	q_in |= base64_values[in[i  ]] << 18;
2410	<
2411	<	out[count++] = (q_in >> 16) & 0xff;
2412	<	out[count++] = (q_in >>  8) & 0xff;
2413	<	out[count++] = (q_in      ) & 0xff;
2414	<	}
2415	<
2416	<	if (in[i-1] == '=') count--;
2417	<	if (in[i-2] == '=') count--;
2418	<
2419	<	out[count] = '\0';
2420	<	*output = out;
2421	<	return (count);
1043	>	return NULL;
1044		}
2423	–
2424	–	#endif /* HAVE_LIBCRYPTO */
2425	–

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