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root/svn/ircd-hybrid/trunk/src/server.c

Comparing:
ircd-hybrid-7.2/src/s_serv.c (file contents), Revision 992 by michael, Mon Aug 17 19:19:16 2009 UTC vs.
ircd-hybrid-8/src/s_serv.c (file contents), Revision 1472 by michael, Sun Jul 22 12:03:18 2012 UTC

#	Line 27 | Line 27
27		#include <openssl/rsa.h>
28		#include "rsa.h"
29		#endif
30	<	#include "tools.h"
30	>	#include "list.h"
31		#include "channel.h"
32		#include "channel_mode.h"
33		#include "client.h"
34	–	#include "common.h"
34		#include "dbuf.h"
35		#include "event.h"
36		#include "fdlist.h"
37		#include "hash.h"
38		#include "irc_string.h"
40	–	#include "inet_misc.h"
39		#include "sprintf_irc.h"
40		#include "ircd.h"
41		#include "ircd_defs.h"
42		#include "s_bsd.h"
45	–	#include "irc_getnameinfo.h"
46	–	#include "list.h"
43		#include "numeric.h"
44		#include "packet.h"
45		#include "irc_res.h"
46	<	#include "s_conf.h"
46	>	#include "conf.h"
47		#include "s_serv.h"
48	<	#include "s_log.h"
48	>	#include "log.h"
49	>	#include "s_misc.h"
50		#include "s_user.h"
51		#include "send.h"
52		#include "memory.h"
53		#include "channel.h" /* chcap_usage_counts stuff...*/
54	+	#include "parse.h"
55
56		#define MIN_CONN_FREQ 300
57
58		static dlink_list cap_list = { NULL, NULL, 0 };
59		static void server_burst(struct Client *);
62	–	static int fork_server(struct Client *);
60		static void burst_all(struct Client *);
61		static void send_tb(struct Client *client_p, struct Channel *chptr);
62
63		static CNCB serv_connect_callback;
64
68	–	static void start_io(struct Client *);
65		static void burst_members(struct Client *, struct Channel *);
66
71	–	static SlinkRplHnd slink_error;
72	–	static SlinkRplHnd slink_zipstats;
73	–
74	–
75	–	#ifdef HAVE_LIBCRYPTO
76	–	struct EncCapability CipherTable[] =
77	–	{
78	–	#ifdef HAVE_EVP_BF_CFB
79	–	{ "BF/168",     CAP_ENC_BF_168,     24, CIPHER_BF     },
80	–	{ "BF/128",     CAP_ENC_BF_128,     16, CIPHER_BF     },
81	–	#endif
82	–	#ifdef HAVE_EVP_CAST5_CFB
83	–	{ "CAST/128",   CAP_ENC_CAST_128,   16, CIPHER_CAST   },
84	–	#endif
85	–	#ifdef HAVE_EVP_IDEA_CFB
86	–	{ "IDEA/128",   CAP_ENC_IDEA_128,   16, CIPHER_IDEA   },
87	–	#endif
88	–	#ifdef HAVE_EVP_RC5_32_12_16_CFB
89	–	{ "RC5.16/128", CAP_ENC_RC5_16_128, 16, CIPHER_RC5_16 },
90	–	{ "RC5.12/128", CAP_ENC_RC5_12_128, 16, CIPHER_RC5_12 },
91	–	{ "RC5.8/128",  CAP_ENC_RC5_8_128,  16, CIPHER_RC5_8  },
92	–	#endif
93	–	#ifdef HAVE_EVP_DES_EDE3_CFB
94	–	{ "3DES/168",   CAP_ENC_3DES_168,   24, CIPHER_3DES   },
95	–	#endif
96	–	#ifdef HAVE_EVP_DES_CFB
97	–	{ "DES/56",     CAP_ENC_DES_56,      8, CIPHER_DES    },
98	–	#endif
99	–	{ 0,            0,                   0, 0             }
100	–	};
101	–	#endif
102	–
103	–	struct SlinkRplDef slinkrpltab[] = {
104	–	{ SLINKRPL_ERROR,    slink_error,    SLINKRPL_FLAG_DATA },
105	–	{ SLINKRPL_ZIPSTATS, slink_zipstats, SLINKRPL_FLAG_DATA },
106	–	{ 0,                 0,              0 },
107	–	};
108	–
109	–
110	–	void
111	–	slink_error(unsigned int rpl, unsigned int len, unsigned char *data,
112	–	struct Client *server_p)
113	–	{
114	–	assert(rpl == SLINKRPL_ERROR);
115	–	assert(len < 256);
116	–
117	–	data[len-1] = '\0';
118	–
119	–	sendto_realops_flags(UMODE_ALL, L_ALL, "SlinkError for %s: %s",
120	–	server_p->name, data);
121	–	/* XXX should this be exit_client? */
122	–	exit_client(server_p, &me, "servlink error -- terminating link");
123	–	}
124	–
125	–	void
126	–	slink_zipstats(unsigned int rpl, unsigned int len, unsigned char *data,
127	–	struct Client *server_p)
128	–	{
129	–	struct ZipStats zipstats;
130	–	uint64_t in = 0, in_wire = 0, out = 0, out_wire = 0;
131	–	int i = 0;
132	–
133	–	assert(rpl == SLINKRPL_ZIPSTATS);
134	–	assert(len == 16);
135	–	assert(IsCapable(server_p, CAP_ZIP));
136	–
137	–	/* Yes, it needs to be done this way, no we cannot let the compiler
138	–	* work with the pointer to the structure.  This works around a GCC
139	–	* bug on SPARC that affects all versions at the time of this writing.
140	–	* I will feed you to the creatures living in RMS's beard if you do
141	–	* not leave this as is, without being sure that you are not causing
142	–	* regression for most of our installed SPARC base.
143	–	* -jmallett, 04/27/2002
144	–	*/
145	–	memcpy(&zipstats, &server_p->localClient->zipstats, sizeof(struct ZipStats));
146	–
147	–	in |= (data[i++] << 24);
148	–	in |= (data[i++] << 16);
149	–	in |= (data[i++] <<  8);
150	–	in |= (data[i++]      );
151	–
152	–	in_wire |= (data[i++] << 24);
153	–	in_wire |= (data[i++] << 16);
154	–	in_wire |= (data[i++] <<  8);
155	–	in_wire |= (data[i++]      );
156	–
157	–	out |= (data[i++] << 24);
158	–	out |= (data[i++] << 16);
159	–	out |= (data[i++] <<  8);
160	–	out |= (data[i++]      );
161	–
162	–	out_wire |= (data[i++] << 24);
163	–	out_wire |= (data[i++] << 16);
164	–	out_wire |= (data[i++] <<  8);
165	–	out_wire |= (data[i++]      );
166	–
167	–	/* This macro adds b to a if a plus b is not an overflow, and sets the
168	–	* value of a to b if it is.
169	–	* Add and Set if No Overflow.
170	–	*/
171	–	#define ASNO(a, b) a = (a + b >= a ? a + b : b)
172	–
173	–	ASNO(zipstats.in, in);
174	–	ASNO(zipstats.out, out);
175	–	ASNO(zipstats.in_wire, in_wire);
176	–	ASNO(zipstats.out_wire, out_wire);
177	–
178	–	if (zipstats.in > 0)
179	–	zipstats.in_ratio = (((double)(zipstats.in - zipstats.in_wire) /
180	–	(double)zipstats.in) * 100.00);
181	–	else
182	–	zipstats.in_ratio = 0;
183	–
184	–	if (zipstats.out > 0)
185	–	zipstats.out_ratio = (((double)(zipstats.out - zipstats.out_wire) /
186	–	(double)zipstats.out) * 100.00);
187	–	else
188	–	zipstats.out_ratio = 0;
189	–
190	–	memcpy(&server_p->localClient->zipstats, &zipstats, sizeof(struct ZipStats));
191	–	}
192	–
193	–	void
194	–	collect_zipstats(void *unused)
195	–	{
196	–	dlink_node *ptr = NULL;
197	–
198	–	DLINK_FOREACH(ptr, serv_list.head)
199	–	{
200	–	struct Client *target_p = ptr->data;
201	–
202	–	if (IsCapable(target_p, CAP_ZIP))
203	–	{
204	–	/* only bother if we haven't already got something queued... */
205	–	if (!target_p->localClient->slinkq)
206	–	{
207	–	target_p->localClient->slinkq     = MyMalloc(1); /* sigh.. */
208	–	target_p->localClient->slinkq[0]  = SLINKCMD_ZIPSTATS;
209	–	target_p->localClient->slinkq_ofs = 0;
210	–	target_p->localClient->slinkq_len = 1;
211	–	send_queued_slink_write(target_p);
212	–	}
213	–	}
214	–	}
215	–	}
216	–
217	–	#ifdef HAVE_LIBCRYPTO
218	–	struct EncCapability *
219	–	check_cipher(struct Client *client_p, struct AccessItem *aconf)
220	–	{
221	–	struct EncCapability *epref = NULL;
222	–
223	–	/* Use connect{} specific info if available */
224	–	if (aconf->cipher_preference)
225	–	epref = aconf->cipher_preference;
226	–	else if (ConfigFileEntry.default_cipher_preference)
227	–	epref = ConfigFileEntry.default_cipher_preference;
228	–
229	–	/*
230	–	* If the server supports the capability in hand, return the matching
231	–	* conf struct.  Otherwise, return NULL (an error).
232	–	*/
233	–	if (epref && IsCapableEnc(client_p, epref->cap))
234	–	return epref;
235	–
236	–	return NULL;
237	–	}
238	–	#endif /* HAVE_LIBCRYPTO */
239	–
240	–	/* my_name_for_link()
241	–	* return wildcard name of my server name
242	–	* according to given config entry --Jto
243	–	*/
244	–	const char *
245	–	my_name_for_link(struct ConfItem *conf)
246	–	{
247	–	struct AccessItem *aconf;
248	–
249	–	aconf = (struct AccessItem *)map_to_conf(conf);
250	–	if (aconf->fakename != NULL)
251	–	return aconf->fakename;
252	–	else
253	–	return me.name;
254	–	}
255	–
67		/*
68		* write_links_file
69		*
#	Line 270 | Line 81 | write_links_file(void* notused)
81		MessageFileLine *newMessageLine = 0;
82		MessageFile *MessageFileptr;
83		const char *p;
84	<	FBFILE *file;
84	>	FILE *file;
85		char buff[512];
86		dlink_node *ptr;
87
88		MessageFileptr = &ConfigFileEntry.linksfile;
89
90	<	if ((file = fbopen(MessageFileptr->fileName, "w")) == NULL)
90	>	if ((file = fopen(MessageFileptr->fileName, "w")) == NULL)
91		return;
92
93		for (mptr = MessageFileptr->contentsOfFile; mptr; mptr = next_mptr)
#	Line 290 | Line 101 | write_links_file(void* notused)
101
102		DLINK_FOREACH(ptr, global_serv_list.head)
103		{
104	<	size_t nbytes = 0;
294	<	struct Client *target_p = ptr->data;
104	>	const struct Client *target_p = ptr->data;
105
106		/* skip ourselves, we send ourselves in /links */
107		if (IsMe(target_p))
#	Line 322 | Line 132 | write_links_file(void* notused)
132		*/
133		assert(strlen(target_p->name) + strlen(me.name) + 6 + strlen(p) <=
134		MESSAGELINELEN);
135	<	ircsprintf(newMessageLine->line, "%s %s :1 %s",
136	<	target_p->name, me.name, p);
135	>	snprintf(newMessageLine->line, sizeof(newMessageLine->line), "%s %s :1 %s",
136	>	target_p->name, me.name, p);
137		newMessageLine->next = NULL;
138
139		if (MessageFileptr->contentsOfFile)
#	Line 338 | Line 148 | write_links_file(void* notused)
148		currentMessageLine = newMessageLine;
149		}
150
151	<	nbytes = ircsprintf(buff, "%s %s :1 %s\n", target_p->name, me.name, p);
152	<	fbputs(buff, file, nbytes);
151	>	snprintf(buff, sizeof(buff), "%s %s :1 %s\n", target_p->name, me.name, p);
152	>	fputs(buff, file);
153		}
154
155	<	fbclose(file);
155	>	fclose(file);
156		}
157
158		/* hunt_server()
#	Line 373 | Line 183 | hunt_server(struct Client *client_p, str
183		dlink_node *ptr;
184		int wilds;
185
186	<	/* Assume it's me, if no server
187	<	*/
188	<	if (parc <= server || EmptyString(parv[server]) ||
189	<	match(me.name, parv[server]) ||
190	<	match(parv[server], me.name) ||
191	<	!strcmp(parv[server], me.id))
382	<	return(HUNTED_ISME);
186	>	/* Assume it's me, if no server */
187	>	if (parc <= server || EmptyString(parv[server]))
188	>	return HUNTED_ISME;
189	>
190	>	if (!strcmp(parv[server], me.id) || match(parv[server], me.name))
191	>	return HUNTED_ISME;
192
193		/* These are to pickup matches that would cause the following
194		* message to go in the wrong direction while doing quick fast
195		* non-matching lookups.
196		*/
197		if (MyClient(source_p))
198	<	target_p = find_client(parv[server]);
198	>	target_p = hash_find_client(parv[server]);
199		else
200		target_p = find_person(client_p, parv[server]);
201
#	Line 394 | Line 203 | hunt_server(struct Client *client_p, str
203		if (target_p->from == source_p->from && !MyConnect(target_p))
204		target_p = NULL;
205
206	<	if (target_p == NULL && (target_p = find_server(parv[server])))
206	>	if (target_p == NULL && (target_p = hash_find_server(parv[server])))
207		if (target_p->from == source_p->from && !MyConnect(target_p))
208		target_p = NULL;
209
210		collapse(parv[server]);
211	<	wilds = (strchr(parv[server], '?') || strchr(parv[server], '*'));
211	>	wilds = has_wildcards(parv[server]);
212
213		/* Again, if there are no wild cards involved in the server
214		* name, use the hash lookup
#	Line 408 | Line 217 | hunt_server(struct Client *client_p, str
217		{
218		if (!wilds)
219		{
220	<	if (!(target_p = find_server(parv[server])))
220	>	if (!(target_p = hash_find_server(parv[server])))
221		{
222		sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
223	<	me.name, parv[0], parv[server]);
223	>	me.name, source_p->name, parv[server]);
224		return(HUNTED_NOSUCH);
225		}
226		}
#	Line 439 | Line 248 | hunt_server(struct Client *client_p, str
248		if(!IsRegistered(target_p))
249		{
250		sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
251	<	me.name, parv[0], parv[server]);
251	>	me.name, source_p->name, parv[server]);
252		return HUNTED_NOSUCH;
253		}
254
#	Line 462 | Line 271 | hunt_server(struct Client *client_p, str
271		}
272
273		sendto_one(source_p, form_str(ERR_NOSUCHSERVER),
274	<	me.name, parv[0], parv[server]);
274	>	me.name, source_p->name, parv[server]);
275		return(HUNTED_NOSUCH);
276		}
277
#	Line 492 | Line 301 | try_connections(void *unused)
301		DLINK_FOREACH(ptr, server_items.head)
302		{
303		conf = ptr->data;
304	<	aconf = (struct AccessItem *)map_to_conf(conf);
304	>	aconf = map_to_conf(conf);
305
306		/* Also when already connecting! (update holdtimes) --SRB
307		*/
308	<	if (!(aconf->status & CONF_SERVER) || aconf->port <= 0 ||
308	>	if (!(aconf->status & CONF_SERVER) || !aconf->port ||
309		!(IsConfAllowAutoConn(aconf)))
310		continue;
311
312	<	cltmp = (struct ClassItem *)map_to_conf(aconf->class_ptr);
312	>	cltmp = map_to_conf(aconf->class_ptr);
313
314		/* Skip this entry if the use of it is still on hold until
315		* future. Otherwise handle this entry (and set it on hold
#	Line 515 | Line 324 | try_connections(void *unused)
324		confrq = DEFAULT_CONNECTFREQUENCY;
325		else
326		{
327	<	confrq = ConFreq(cltmp);
328	<	if (confrq < MIN_CONN_FREQ )
327	>	confrq = cltmp->con_freq;
328	>	if (confrq < MIN_CONN_FREQ)
329		confrq = MIN_CONN_FREQ;
330		}
331
#	Line 525 | Line 334 | try_connections(void *unused)
334		/* Found a CONNECT config with port specified, scan clients
335		* and see if this server is already connected?
336		*/
337	<	if (find_server(conf->name) != NULL)
337	>	if (hash_find_server(conf->name) != NULL)
338		continue;
339
340	<	if (CurrUserCount(cltmp) < MaxTotal(cltmp))
340	>	if (cltmp->curr_user_count < cltmp->max_total)
341		{
342		/* Go to the end of the list, if not already last */
343		if (ptr->next != NULL)
#	Line 563 | Line 372 | try_connections(void *unused)
372		}
373
374		int
375	<	check_server(const char *name, struct Client *client_p, int cryptlink)
375	>	valid_servname(const char *name)
376	>	{
377	>	unsigned int length = 0;
378	>	unsigned int dots   = 0;
379	>	const char *p = name;
380	>
381	>	for (; *p; ++p)
382	>	{
383	>	if (!IsServChar(*p))
384	>	return 0;
385	>
386	>	++length;
387	>
388	>	if (*p == '.')
389	>	++dots;
390	>	}
391	>
392	>	return dots != 0 && length <= HOSTLEN;
393	>	}
394	>
395	>	int
396	>	check_server(const char *name, struct Client *client_p)
397		{
398		dlink_node *ptr;
399		struct ConfItem *conf           = NULL;
#	Line 574 | Line 404 | check_server(const char *name, struct Cl
404
405		assert(client_p != NULL);
406
577	–	if (client_p == NULL)
578	–	return(error);
579	–
580	–	if (strlen(name) > HOSTLEN)
581	–	return(-4);
582	–
407		/* loop through looking for all possible connect items that might work */
408		DLINK_FOREACH(ptr, server_items.head)
409		{
410		conf = ptr->data;
411	<	aconf = (struct AccessItem *)map_to_conf(conf);
411	>	aconf = map_to_conf(conf);
412
413		if (!match(name, conf->name))
414		continue;
#	Line 597 | Line 421 | check_server(const char *name, struct Cl
421		match(aconf->host, client_p->sockhost))
422		{
423		error = -2;
600	–	#ifdef HAVE_LIBCRYPTO
601	–	if (cryptlink && IsConfCryptLink(aconf))
602	–	{
603	–	if (aconf->rsa_public_key)
604	–	server_conf = conf;
605	–	}
606	–	else if (!(cryptlink || IsConfCryptLink(aconf)))
607	–	#endif /* HAVE_LIBCRYPTO */
608	–	{
609	–	/* A NULL password is as good as a bad one */
610	–	if (EmptyString(client_p->localClient->passwd))
611	–	return(-2);
612	–
613	–	/* code in s_conf.c should not have allowed this to be NULL */
614	–	if (aconf->passwd == NULL)
615	–	return(-2);
424
425	<	if (IsConfEncrypted(aconf))
426	<	{
427	<	if (strcmp(aconf->passwd,
428	<	(const char *)crypt(client_p->localClient->passwd,
621	<	aconf->passwd)) == 0)
622	<	server_conf = conf;
623	<	}
624	<	else
625	<	{
626	<	if (strcmp(aconf->passwd, client_p->localClient->passwd) == 0)
627	<	server_conf = conf;
628	<	}
629	<	}
425	>	if (!match_conf_password(client_p->localClient->passwd, aconf))
426	>	return -2;
427	>
428	>	server_conf = conf;
429		}
430		}
431
#	Line 635 | Line 434 | check_server(const char *name, struct Cl
434
435		attach_conf(client_p, server_conf);
436
638	–	/* Now find all leaf or hub config items for this server */
639	–	DLINK_FOREACH(ptr, hub_items.head)
640	–	{
641	–	conf = ptr->data;
642	–
643	–	if (!match(name, conf->name))
644	–	continue;
645	–	attach_conf(client_p, conf);
646	–	}
647	–
648	–	DLINK_FOREACH(ptr, leaf_items.head)
649	–	{
650	–	conf = ptr->data;
651	–
652	–	if (!match(name, conf->name))
653	–	continue;
654	–	attach_conf(client_p, conf);
655	–	}
656	–
437		server_aconf = map_to_conf(server_conf);
438
659	–	#ifdef HAVE_LIBZ /* otherwise, clear it unconditionally */
660	–	if (!IsConfCompressed(server_aconf))
661	–	#endif
662	–	ClearCap(client_p, CAP_ZIP);
663	–	if (!IsConfCryptLink(server_aconf))
664	–	ClearCap(client_p, CAP_ENC);
439		if (!IsConfTopicBurst(server_aconf))
666	–	{
667	–	ClearCap(client_p, CAP_TB);
440		ClearCap(client_p, CAP_TBURST);
669	–	}
441
671	–	/* Don't unset CAP_HUB here even if the server isn't a hub,
672	–	* it only indicates if the server thinks it's lazylinks are
673	–	* leafs or not.. if you unset it, bad things will happen
674	–	*/
442		if (aconf != NULL)
443		{
444		struct sockaddr_in *v4;
#	Line 682 | Line 449 | check_server(const char *name, struct Cl
449		{
450		#ifdef IPV6
451		case AF_INET6:
452	<	v6 = (struct sockaddr_in6 *)&aconf->ipnum;
452	>	v6 = (struct sockaddr_in6 *)&aconf->addr;
453
454		if (IN6_IS_ADDR_UNSPECIFIED(&v6->sin6_addr))
455	<	memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
455	>	memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
456		break;
457		#endif
458		case AF_INET:
459	<	v4 = (struct sockaddr_in *)&aconf->ipnum;
459	>	v4 = (struct sockaddr_in *)&aconf->addr;
460
461		if (v4->sin_addr.s_addr == INADDR_NONE)
462	<	memcpy(&aconf->ipnum, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
462	>	memcpy(&aconf->addr, &client_p->localClient->ip, sizeof(struct irc_ssaddr));
463		break;
464		}
465		}
#	Line 783 | Line 550 | find_capability(const char *capab)
550		* inputs       - Client pointer to send to
551		*              - Pointer to AccessItem (for crypt)
552		*              - int flag of capabilities that this server can send
786	–	*              - int flag of encryption capabilities
553		* output       - NONE
554		* side effects - send the CAPAB line to a server  -orabidoo
555		*
556		*/
557		void
558		send_capabilities(struct Client *client_p, struct AccessItem *aconf,
559	<	int cap_can_send, int enc_can_send)
559	>	int cap_can_send)
560		{
561		struct Capability *cap=NULL;
562		char msgbuf[IRCD_BUFSIZE];
563		char *t;
564		int tl;
565		dlink_node *ptr;
800	–	#ifdef HAVE_LIBCRYPTO
801	–	const struct EncCapability *epref = NULL;
802	–	char *capend;
803	–	int sent_cipher = 0;
804	–	#endif
566
567		t = msgbuf;
568
#	Line 815 | Line 576 | send_capabilities(struct Client *client_
576		t += tl;
577		}
578		}
818	–	#ifdef HAVE_LIBCRYPTO
819	–	if (enc_can_send)
820	–	{
821	–	capend = t;
822	–	strcpy(t, "ENC:");
823	–	t += 4;
824	–
825	–	/* use connect{} specific info if available */
826	–	if (aconf->cipher_preference)
827	–	epref = aconf->cipher_preference;
828	–	else if (ConfigFileEntry.default_cipher_preference)
829	–	epref = ConfigFileEntry.default_cipher_preference;
579
831	–	if (epref && (epref->cap & enc_can_send))
832	–	{
833	–	/* Leave the space -- it is removed later. */
834	–	tl = ircsprintf(t, "%s ", epref->name);
835	–	t += tl;
836	–	sent_cipher = 1;
837	–	}
838	–
839	–	if (!sent_cipher)
840	–	t = capend; /* truncate string before ENC:, below */
841	–	}
842	–	#endif
580		*(t - 1) = '\0';
581		sendto_one(client_p, "CAPAB :%s", msgbuf);
582		}
#	Line 859 | Line 596 | sendnick_TS(struct Client *client_p, str
596		if (!IsClient(target_p))
597		return;
598
599	<	send_umode(NULL, target_p, 0, IsOperHiddenAdmin(target_p) ?
863	<	SEND_UMODES & ~UMODE_ADMIN : SEND_UMODES, ubuf);
599	>	send_umode(NULL, target_p, 0, SEND_UMODES, ubuf);
600
601		if (ubuf[0] == '\0')
602		{
#	Line 869 | Line 605 | sendnick_TS(struct Client *client_p, str
605		}
606
607		/* XXX Both of these need to have a :me.name or :mySID!?!?! */
608	<	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
609	<	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
610	<	target_p->servptr->id,
611	<	target_p->name, target_p->hopcount + 1,
612	<	(unsigned long) target_p->tsinfo,
613	<	ubuf, target_p->username, target_p->host,
614	<	(MyClient(target_p) && IsIPSpoof(target_p)) ?
615	<	"0" : target_p->sockhost, target_p->id, target_p->info);
608	>	if (IsCapable(client_p, CAP_SVS))
609	>	{
610	>	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
611	>	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s %lu :%s",
612	>	target_p->servptr->id,
613	>	target_p->name, target_p->hopcount + 1,
614	>	(unsigned long) target_p->tsinfo,
615	>	ubuf, target_p->username, target_p->host,
616	>	(MyClient(target_p) && IsIPSpoof(target_p)) ?
617	>	"0" : target_p->sockhost, target_p->id,
618	>	(unsigned long)target_p->servicestamp, target_p->info);
619	>	else
620	>	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s %lu :%s",
621	>	target_p->name, target_p->hopcount + 1,
622	>	(unsigned long) target_p->tsinfo,
623	>	ubuf, target_p->username, target_p->host,
624	>	target_p->servptr->name, (unsigned long)target_p->servicestamp,
625	>	target_p->info);
626	>	}
627		else
628	<	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
629	<	target_p->name, target_p->hopcount + 1,
630	<	(unsigned long) target_p->tsinfo,
631	<	ubuf, target_p->username, target_p->host,
632	<	target_p->servptr->name, target_p->info);
628	>	{
629	>	if (HasID(target_p) && IsCapable(client_p, CAP_TS6))
630	>	sendto_one(client_p, ":%s UID %s %d %lu %s %s %s %s %s :%s",
631	>	target_p->servptr->id,
632	>	target_p->name, target_p->hopcount + 1,
633	>	(unsigned long) target_p->tsinfo,
634	>	ubuf, target_p->username, target_p->host,
635	>	(MyClient(target_p) && IsIPSpoof(target_p)) ?
636	>	"0" : target_p->sockhost, target_p->id, target_p->info);
637	>	else
638	>	sendto_one(client_p, "NICK %s %d %lu %s %s %s %s :%s",
639	>	target_p->name, target_p->hopcount + 1,
640	>	(unsigned long) target_p->tsinfo,
641	>	ubuf, target_p->username, target_p->host,
642	>	target_p->servptr->name, target_p->info);
643	>	}
644
645	<	if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->serv->sconf)))
645	>	if (IsConfAwayBurst((struct AccessItem *)map_to_conf(client_p->localClient->confs.head->data)))
646		if (!EmptyString(target_p->away))
647	<	sendto_one(client_p, ":%s AWAY :%s", target_p->name,
647	>	sendto_one(client_p, ":%s AWAY :%s", ID_or_name(target_p, client_p),
648		target_p->away);
649
650		}
#	Line 914 | Line 672 | show_capabilities(struct Client *target_
672		if (IsCapable(target_p, cap->cap))
673		t += ircsprintf(t, "%s ", cap->name);
674		}
917	–	#ifdef HAVE_LIBCRYPTO
918	–	if (IsCapable(target_p, CAP_ENC) &&
919	–	target_p->localClient->in_cipher &&
920	–	target_p->localClient->out_cipher)
921	–	t += ircsprintf(t, "ENC:%s ",
922	–	target_p->localClient->in_cipher->name);
923	–	#endif
924	–	*(t - 1) = '\0';
675
676	<	return(msgbuf);
676	>	*(t - 1) = '\0';
677	>	return msgbuf;
678		}
679
680		/* make_server()
#	Line 957 | Line 708 | server_estab(struct Client *client_p)
708		char *host;
709		const char *inpath;
710		static char inpath_ip[HOSTLEN * 2 + USERLEN + 6];
960	–	dlink_node *m;
711		dlink_node *ptr;
712	+	#ifdef HAVE_LIBCRYPTO
713	+	const COMP_METHOD *compression = NULL, *expansion = NULL;
714	+	#endif
715
716		assert(client_p != NULL);
717
#	Line 997 | Line 750 | server_estab(struct Client *client_p)
750		}
751		}
752
753	<	aconf = (struct AccessItem *)map_to_conf(conf);
753	>	aconf = map_to_conf(conf);
754
755	<	if (IsUnknown(client_p) && !IsConfCryptLink(aconf))
755	>	if (IsUnknown(client_p))
756		{
757		/* jdc -- 1.  Use EmptyString(), not [0] index reference.
758		*        2.  Check aconf->spasswd, not aconf->passwd.
759		*/
760		if (!EmptyString(aconf->spasswd))
761	<	{
762	<	/* only send ts6 format PASS if we have ts6 enabled */
1010	<	if (me.id[0] != '\0')               /* Send TS 6 form only if id */
1011	<	sendto_one(client_p, "PASS %s TS %d %s",
1012	<	aconf->spasswd, TS_CURRENT, me.id);
1013	<	else
1014	<	sendto_one(client_p, "PASS %s TS 5",
1015	<	aconf->spasswd);
1016	<	}
761	>	sendto_one(client_p, "PASS %s TS %d %s",
762	>	aconf->spasswd, TS_CURRENT, me.id);
763
764		/* Pass my info to the new server
765		*
1020	–	* If this is a HUB, pass on CAP_HUB
766		* Pass on ZIP if supported
767		* Pass on TB if supported.
768		* - Dianora
769		*/
770
771	<	send_capabilities(client_p, aconf, (ServerInfo.hub ? CAP_HUB : 0)
772	<	| (IsConfCompressed(aconf) ? CAP_ZIP : 0)
1028	<	| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), 0);
1029	<
1030	<	/* SERVER is the last command sent before switching to ziplinks.
1031	<	* We set TCPNODELAY on the socket to make sure it gets sent out
1032	<	* on the wire immediately.  Otherwise, it could be sitting in
1033	<	* a kernel buffer when we start sending zipped data, and the
1034	<	* parser on the receiving side can't hand both unzipped and zipped
1035	<	* data in one packet. --Rodder
1036	<	*
1037	<	* currently we only need to call send_queued_write,
1038	<	* Nagle is already disabled at this point --adx
1039	<	*/
1040	<	sendto_one(client_p, "SERVER %s 1 :%s%s",
1041	<	my_name_for_link(conf),
1042	<	ConfigServerHide.hidden ? "(H) " : "",
1043	<	(me.info[0]) ? (me.info) : "IRCers United");
1044	<	send_queued_write(client_p);
1045	<	}
771	>	send_capabilities(client_p, aconf,
772	>	(IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
773
774	<	/* Hand the server off to servlink now */
775	<	if (IsCapable(client_p, CAP_ENC) || IsCapable(client_p, CAP_ZIP))
1049	<	{
1050	<	if (fork_server(client_p) < 0)
1051	<	{
1052	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1053	<	"Warning: fork failed for server %s -- check servlink_path (%s)",
1054	<	get_client_name(client_p, HIDE_IP), ConfigFileEntry.servlink_path);
1055	<	sendto_realops_flags(UMODE_ALL, L_OPER, "Warning: fork failed for server "
1056	<	"%s -- check servlink_path (%s)",
1057	<	get_client_name(client_p, MASK_IP),
1058	<	ConfigFileEntry.servlink_path);
1059	<	exit_client(client_p, &me, "fork failed");
1060	<	return;
1061	<	}
1062	<
1063	<	start_io(client_p);
1064	<	SetServlink(client_p);
774	>	sendto_one(client_p, "SERVER %s 1 :%s%s",
775	>	me.name, ConfigServerHide.hidden ? "(H) " : "", me.info);
776		}
777
778	<	/* only send ts6 format SVINFO if we have ts6 enabled */
1068	<	sendto_one(client_p, "SVINFO %d %d 0 :%lu",
1069	<	(me.id[0] ? TS_CURRENT : 5), TS_MIN,
778	>	sendto_one(client_p, "SVINFO %d %d 0 :%lu", TS_CURRENT, TS_MIN,
779		(unsigned long)CurrentTime);
780
781		/* assumption here is if they passed the correct TS version, they also passed an SID */
#	Line 1100 | Line 809 | server_estab(struct Client *client_p)
809		/* Some day, all these lists will be consolidated *sigh* */
810		dlinkAdd(client_p, &client_p->lnode, &me.serv->server_list);
811
812	<	m = dlinkFind(&unknown_list, client_p);
1104	<	assert(NULL != m);
812	>	assert(dlinkFind(&unknown_list, client_p));
813
814	<	dlinkDelete(m, &unknown_list);
815	<	dlinkAdd(client_p, m, &serv_list);
814	>	dlink_move_node(&client_p->localClient->lclient_node,
815	>	&unknown_list, &serv_list);
816
817		Count.myserver++;
818
#	Line 1115 | Line 823 | server_estab(struct Client *client_p)
823		make_server(client_p);
824
825		/* fixing eob timings.. -gnp */
826	<	client_p->firsttime = CurrentTime;
826	>	client_p->localClient->firsttime = CurrentTime;
827
828	<	/* Show the real host/IP to admins */
829	<	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1122	<	"Link with %s established: (%s) link",
1123	<	inpath_ip,show_capabilities(client_p));
1124	<	/* Now show the masked hostname/IP to opers */
1125	<	sendto_realops_flags(UMODE_ALL, L_OPER,
1126	<	"Link with %s established: (%s) link",
1127	<	inpath,show_capabilities(client_p));
1128	<	ilog(L_NOTICE, "Link with %s established: (%s) link",
1129	<	inpath_ip, show_capabilities(client_p));
1130	<
1131	<	client_p->serv->sconf = conf;
828	>	if (find_matching_name_conf(SERVICE_TYPE, client_p->name, NULL, NULL, 0))
829	>	AddFlag(client_p, FLAGS_SERVICE);
830
831	<	if (HasServlink(client_p))
831	>	/* Show the real host/IP to admins */
832	>	#ifdef HAVE_LIBCRYPTO
833	>	if (client_p->localClient->fd.ssl)
834		{
835	<	/* we won't overflow FD_DESC_SZ here, as it can hold
836	<	* client_p->name + 64
837	<	*/
838	<	fd_note(&client_p->localClient->fd, "slink data: %s", client_p->name);
839	<	fd_note(&client_p->localClient->ctrlfd, "slink ctrl: %s", client_p->name);
835	>	compression = SSL_get_current_compression(client_p->localClient->fd.ssl);
836	>	expansion   = SSL_get_current_expansion(client_p->localClient->fd.ssl);
837	>
838	>	sendto_realops_flags(UMODE_ALL, L_ADMIN,
839	>	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
840	>	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
841	>	compression ? SSL_COMP_get_name(compression) : "NONE",
842	>	expansion ? SSL_COMP_get_name(expansion) : "NONE",
843	>	show_capabilities(client_p));
844	>	/* Now show the masked hostname/IP to opers */
845	>	sendto_realops_flags(UMODE_ALL, L_OPER,
846	>	"Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
847	>	inpath, ssl_get_cipher(client_p->localClient->fd.ssl),
848	>	compression ? SSL_COMP_get_name(compression) : "NONE",
849	>	expansion ? SSL_COMP_get_name(expansion) : "NONE",
850	>	show_capabilities(client_p));
851	>	ilog(LOG_TYPE_IRCD, "Link with %s established: [SSL: %s, Compression/Expansion method: %s/%s] (Capabilities: %s)",
852	>	inpath_ip, ssl_get_cipher(client_p->localClient->fd.ssl),
853	>	compression ? SSL_COMP_get_name(compression) : "NONE",
854	>	expansion ? SSL_COMP_get_name(expansion) : "NONE",
855	>	show_capabilities(client_p));
856		}
857		else
858	<	fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
858	>	#endif
859	>	{
860	>	sendto_realops_flags(UMODE_ALL, L_ADMIN,
861	>	"Link with %s established: (Capabilities: %s)",
862	>	inpath_ip,show_capabilities(client_p));
863	>	/* Now show the masked hostname/IP to opers */
864	>	sendto_realops_flags(UMODE_ALL, L_OPER,
865	>	"Link with %s established: (Capabilities: %s)",
866	>	inpath,show_capabilities(client_p));
867	>	ilog(LOG_TYPE_IRCD, "Link with %s established: (Capabilities: %s)",
868	>	inpath_ip, show_capabilities(client_p));
869	>	}
870	>
871	>	fd_note(&client_p->localClient->fd, "Server: %s", client_p->name);
872
873		/* Old sendto_serv_but_one() call removed because we now
874		** need to send different names to different servers
#	Line 1152 | Line 881 | server_estab(struct Client *client_p)
881		if (target_p == client_p)
882		continue;
883
1155	–	if ((conf = target_p->serv->sconf) &&
1156	–	match(my_name_for_link(conf), client_p->name))
1157	–	continue;
1158	–
884		if (IsCapable(target_p, CAP_TS6) && HasID(client_p))
885		sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
886		me.id, client_p->name, client_p->id,
#	Line 1186 | Line 911 | server_estab(struct Client *client_p)
911		**    is destroyed...)
912		*/
913
1189	–	conf = client_p->serv->sconf;
1190	–
914		DLINK_FOREACH_PREV(ptr, global_serv_list.tail)
915		{
916		target_p = ptr->data;
917
918		/* target_p->from == target_p for target_p == client_p */
919	<	if (target_p->from == client_p)
1197	<	continue;
1198	<
1199	<	if (match(my_name_for_link(conf), target_p->name))
919	>	if (IsMe(target_p) || target_p->from == client_p)
920		continue;
921
922		if (IsCapable(client_p, CAP_TS6))
#	Line 1220 | Line 940 | server_estab(struct Client *client_p)
940		server_burst(client_p);
941		}
942
1223	–	static void
1224	–	start_io(struct Client *server)
1225	–	{
1226	–	struct LocalUser *lserver = server->localClient;
1227	–	int alloclen = 1;
1228	–	char *buf;
1229	–	dlink_node *ptr;
1230	–	struct dbuf_block *block;
1231	–
1232	–	/* calculate how many bytes to allocate */
1233	–	if (IsCapable(server, CAP_ZIP))
1234	–	alloclen += 6;
1235	–	#ifdef HAVE_LIBCRYPTO
1236	–	if (IsCapable(server, CAP_ENC))
1237	–	alloclen += 16 + lserver->in_cipher->keylen + lserver->out_cipher->keylen;
1238	–	#endif
1239	–	alloclen += dbuf_length(&lserver->buf_recvq);
1240	–	alloclen += dlink_list_length(&lserver->buf_recvq.blocks) * 3;
1241	–	alloclen += dbuf_length(&lserver->buf_sendq);
1242	–	alloclen += dlink_list_length(&lserver->buf_sendq.blocks) * 3;
1243	–
1244	–	/* initialize servlink control sendq */
1245	–	lserver->slinkq = buf = MyMalloc(alloclen);
1246	–	lserver->slinkq_ofs = 0;
1247	–	lserver->slinkq_len = alloclen;
1248	–
1249	–	if (IsCapable(server, CAP_ZIP))
1250	–	{
1251	–	/* ziplink */
1252	–	*buf++ = SLINKCMD_SET_ZIP_OUT_LEVEL;
1253	–	*buf++ = 0; /* |          */
1254	–	*buf++ = 1; /* \ len is 1 */
1255	–	*buf++ = ConfigFileEntry.compression_level;
1256	–	*buf++ = SLINKCMD_START_ZIP_IN;
1257	–	*buf++ = SLINKCMD_START_ZIP_OUT;
1258	–	}
1259	–	#ifdef HAVE_LIBCRYPTO
1260	–	if (IsCapable(server, CAP_ENC))
1261	–	{
1262	–	/* Decryption settings */
1263	–	*buf++ = SLINKCMD_SET_CRYPT_IN_CIPHER;
1264	–	*buf++ = 0; /* /                     (upper 8-bits of len) */
1265	–	*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */
1266	–	*buf++ = lserver->in_cipher->cipherid;
1267	–	*buf++ = SLINKCMD_SET_CRYPT_IN_KEY;
1268	–	*buf++ = 0; /* keylen < 256 */
1269	–	*buf++ = lserver->in_cipher->keylen;
1270	–	memcpy(buf, lserver->in_key, lserver->in_cipher->keylen);
1271	–	buf += lserver->in_cipher->keylen;
1272	–	/* Encryption settings */
1273	–	*buf++ = SLINKCMD_SET_CRYPT_OUT_CIPHER;
1274	–	*buf++ = 0; /* /                     (upper 8-bits of len) */
1275	–	*buf++ = 1; /* \ cipher id is 1 byte (lower 8-bits of len) */
1276	–	*buf++ = lserver->out_cipher->cipherid;
1277	–	*buf++ = SLINKCMD_SET_CRYPT_OUT_KEY;
1278	–	*buf++ = 0; /* keylen < 256 */
1279	–	*buf++ = lserver->out_cipher->keylen;
1280	–	memcpy(buf, lserver->out_key, lserver->out_cipher->keylen);
1281	–	buf += lserver->out_cipher->keylen;
1282	–	*buf++ = SLINKCMD_START_CRYPT_IN;
1283	–	*buf++ = SLINKCMD_START_CRYPT_OUT;
1284	–	}
1285	–	#endif
1286	–
1287	–	/* pass the whole recvq to servlink */
1288	–	DLINK_FOREACH (ptr, lserver->buf_recvq.blocks.head)
1289	–	{
1290	–	block = ptr->data;
1291	–	*buf++ = SLINKCMD_INJECT_RECVQ;
1292	–	*buf++ = (block->size >> 8);
1293	–	*buf++ = (block->size & 0xff);
1294	–	memcpy(buf, &block->data[0], block->size);
1295	–	buf += block->size;
1296	–	}
1297	–
1298	–	dbuf_clear(&lserver->buf_recvq);
1299	–
1300	–	/* pass the whole sendq to servlink */
1301	–	DLINK_FOREACH (ptr, lserver->buf_sendq.blocks.head)
1302	–	{
1303	–	block = ptr->data;
1304	–	*buf++ = SLINKCMD_INJECT_SENDQ;
1305	–	*buf++ = (block->size >> 8);
1306	–	*buf++ = (block->size & 0xff);
1307	–	memcpy(buf, &block->data[0], block->size);
1308	–	buf += block->size;
1309	–	}
1310	–
1311	–	dbuf_clear(&lserver->buf_sendq);
1312	–
1313	–	/* start io */
1314	–	*buf++ = SLINKCMD_INIT;
1315	–
1316	–	/* schedule a write */
1317	–	send_queued_slink_write(server);
1318	–	}
1319	–
1320	–	/* fork_server()
1321	–	*
1322	–	* inputs       - struct Client *server
1323	–	* output       - success: 0 / failure: -1
1324	–	* side effect  - fork, and exec SERVLINK to handle this connection
1325	–	*/
1326	–	static int
1327	–	fork_server(struct Client *server)
1328	–	{
1329	–	#ifndef HAVE_SOCKETPAIR
1330	–	return -1;
1331	–	#else
1332	–	int i;
1333	–	int slink_fds[2][2];
1334	–	/* 0? - ctrl  | 1? - data
1335	–	* ?0 - child | ?1 - parent */
1336	–
1337	–	if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[0]) < 0)
1338	–	return -1;
1339	–	if (socketpair(AF_UNIX, SOCK_STREAM, 0, slink_fds[1]) < 0)
1340	–	goto free_ctrl_fds;
1341	–
1342	–	if ((i = fork()) < 0)
1343	–	{
1344	–	close(slink_fds[1][0]);  close(slink_fds[1][1]);
1345	–	free_ctrl_fds:
1346	–	close(slink_fds[0][0]);  close(slink_fds[0][1]);
1347	–	return -1;
1348	–	}
1349	–
1350	–	if (i == 0)
1351	–	{
1352	–	char fd_str[3][6];   /* store 3x sizeof("65535") */
1353	–	char *kid_argv[7];
1354	–
1355	–	#ifdef O_ASYNC
1356	–	fcntl(server->localClient->fd.fd, F_SETFL,
1357	–	fcntl(server->localClient->fd.fd, F_GETFL, 0) & ~O_ASYNC);
1358	–	#endif
1359	–	close_fds(&server->localClient->fd);
1360	–	close(slink_fds[0][1]);
1361	–	close(slink_fds[1][1]);
1362	–
1363	–	sprintf(fd_str[0], "%d", slink_fds[0][0]);
1364	–	sprintf(fd_str[1], "%d", slink_fds[1][0]);
1365	–	sprintf(fd_str[2], "%d", server->localClient->fd.fd);
1366	–
1367	–	kid_argv[0] = "-slink";
1368	–	kid_argv[1] = kid_argv[2] = fd_str[0];  /* ctrl */
1369	–	kid_argv[3] = kid_argv[4] = fd_str[1];  /* data */
1370	–	kid_argv[5] = fd_str[2];    /* network */
1371	–	kid_argv[6] = NULL;
1372	–
1373	–	execv(ConfigFileEntry.servlink_path, kid_argv);
1374	–
1375	–	_exit(1);
1376	–	}
1377	–
1378	–	/* close the network fd and the child ends of the pipes */
1379	–	fd_close(&server->localClient->fd);
1380	–	close(slink_fds[0][0]);
1381	–	close(slink_fds[1][0]);
1382	–
1383	–	execute_callback(setup_socket_cb, slink_fds[0][1]);
1384	–	execute_callback(setup_socket_cb, slink_fds[1][1]);
1385	–
1386	–	fd_open(&server->localClient->ctrlfd, slink_fds[0][1], 1, "slink ctrl");
1387	–	fd_open(&server->localClient->fd, slink_fds[1][1], 1, "slink data");
1388	–
1389	–	read_ctrl_packet(&server->localClient->ctrlfd, server);
1390	–	read_packet(&server->localClient->fd, server);
1391	–
1392	–	return 0;
1393	–	#endif
1394	–	}
1395	–
943		/* server_burst()
944		*
945		* inputs       - struct Client pointer server
#	Line 1441 | Line 988 | burst_all(struct Client *client_p)
988		burst_members(client_p, chptr);
989		send_channel_modes(client_p, chptr);
990
991	<	if (IsCapable(client_p, CAP_TBURST) ||
1445	<	IsCapable(client_p, CAP_TB))
991	>	if (IsCapable(client_p, CAP_TBURST))
992		send_tb(client_p, chptr);
993		}
994		}
#	Line 1453 | Line 999 | burst_all(struct Client *client_p)
999		{
1000		struct Client *target_p = ptr->data;
1001
1002	<	if (!IsBursted(target_p) && target_p->from != client_p)
1002	>	if (!HasFlag(target_p, FLAGS_BURSTED) && target_p->from != client_p)
1003		sendnick_TS(client_p, target_p);
1004
1005	<	ClearBursted(target_p);
1005	>	DelFlag(target_p, FLAGS_BURSTED);
1006		}
1007
1008		/* We send the time we started the burst, and let the remote host determine an EOB time,
#	Line 1474 | Line 1020 | burst_all(struct Client *client_p)
1020		*              - pointer to channel
1021		* output       - NONE
1022		* side effects - Called on a server burst when
1023	<	*                server is CAP_TB|CAP_TBURST capable
1023	>	*                server is CAP_TBURST capable
1024		*/
1025		static void
1026		send_tb(struct Client *client_p, struct Channel *chptr)
#	Line 1493 | Line 1039 | send_tb(struct Client *client_p, struct
1039		* for further information   -Michael
1040		*/
1041		if (chptr->topic_time != 0)
1042	<	{
1043	<	if (IsCapable(client_p, CAP_TBURST))
1044	<	sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s",
1045	<	me.name, (unsigned long)chptr->channelts, chptr->chname,
1046	<	(unsigned long)chptr->topic_time,
1047	<	chptr->topic_info ? chptr->topic_info : "",
1502	<	chptr->topic ? chptr->topic : "");
1503	<	else if (IsCapable(client_p, CAP_TB))
1504	<	{
1505	<	if (ConfigChannel.burst_topicwho)
1506	<	{
1507	<	sendto_one(client_p, ":%s TB %s %lu %s :%s",
1508	<	me.name, chptr->chname,
1509	<	(unsigned long)chptr->topic_time,
1510	<	chptr->topic_info, chptr->topic ? chptr->topic : "");
1511	<	}
1512	<	else
1513	<	{
1514	<	sendto_one(client_p, ":%s TB %s %lu :%s",
1515	<	me.name, chptr->chname,
1516	<	(unsigned long)chptr->topic_time,
1517	<	chptr->topic ? chptr->topic : "");
1518	<	}
1519	<	}
1520	<	}
1042	>	sendto_one(client_p, ":%s TBURST %lu %s %lu %s :%s",
1043	>	ID_or_name(&me, client_p),
1044	>	(unsigned long)chptr->channelts, chptr->chname,
1045	>	(unsigned long)chptr->topic_time,
1046	>	chptr->topic_info,
1047	>	chptr->topic);
1048		}
1049
1050		/* burst_members()
#	Line 1539 | Line 1066 | burst_members(struct Client *client_p, s
1066		ms       = ptr->data;
1067		target_p = ms->client_p;
1068
1069	<	if (!IsBursted(target_p))
1069	>	if (!HasFlag(target_p, FLAGS_BURSTED))
1070		{
1071	<	SetBursted(target_p);
1071	>	AddFlag(target_p, FLAGS_BURSTED);
1072
1073		if (target_p->from != client_p)
1074		sendnick_TS(client_p, target_p);
#	Line 1575 | Line 1102 | serv_connect(struct AccessItem *aconf, s
1102		{
1103		struct ConfItem *conf;
1104		struct Client *client_p;
1105	<	char buf[HOSTIPLEN];
1105	>	char buf[HOSTIPLEN + 1];
1106
1107		/* conversion structs */
1108		struct sockaddr_in *v4;
1109		/* Make sure aconf is useful */
1110		assert(aconf != NULL);
1111
1585	–	if(aconf == NULL)
1586	–	return (0);
1587	–
1112		/* XXX should be passing struct ConfItem in the first place */
1113		conf = unmap_conf_item(aconf);
1114
1115		/* log */
1116	<	irc_getnameinfo((struct sockaddr*)&aconf->ipnum, aconf->ipnum.ss_len,
1117	<	buf, HOSTIPLEN, NULL, 0, NI_NUMERICHOST);
1118	<	ilog(L_NOTICE, "Connect to %s[%s] @%s", aconf->user, aconf->host,
1116	>	getnameinfo((struct sockaddr *)&aconf->addr, aconf->addr.ss_len,
1117	>	buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
1118	>	ilog(LOG_TYPE_IRCD, "Connect to %s[%s] @%s", conf->name, aconf->host,
1119		buf);
1120
1121		/* Still processing a DNS lookup? -> exit */
#	Line 1614 | Line 1138 | serv_connect(struct AccessItem *aconf, s
1138		/* Make sure this server isn't already connected
1139		* Note: aconf should ALWAYS be a valid C: line
1140		*/
1141	<	if ((client_p = find_server(conf->name)) != NULL)
1141	>	if ((client_p = hash_find_server(conf->name)) != NULL)
1142		{
1143		sendto_realops_flags(UMODE_ALL, L_ADMIN,
1144		"Server %s already present from %s",
#	Line 1637 | Line 1161 | serv_connect(struct AccessItem *aconf, s
1161		strlcpy(client_p->host, aconf->host, sizeof(client_p->host));
1162
1163		/* We already converted the ip once, so lets use it - stu */
1164	<	strlcpy(client_p->sockhost, buf, HOSTIPLEN);
1164	>	strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
1165
1166		/* create a socket for the server connection */
1167	<	if (comm_open(&client_p->localClient->fd, aconf->ipnum.ss.ss_family,
1167	>	if (comm_open(&client_p->localClient->fd, aconf->addr.ss.ss_family,
1168		SOCK_STREAM, 0, NULL) < 0)
1169		{
1170		/* Eek, failure to create the socket */
#	Line 1695 | Line 1219 | serv_connect(struct AccessItem *aconf, s
1219		switch (aconf->aftype)
1220		{
1221		case AF_INET:
1222	<	v4 = (struct sockaddr_in*)&aconf->my_ipnum;
1222	>	v4 = (struct sockaddr_in*)&aconf->bind;
1223		if (v4->sin_addr.s_addr != 0)
1224		{
1225		struct irc_ssaddr ipn;
1226		memset(&ipn, 0, sizeof(struct irc_ssaddr));
1227		ipn.ss.ss_family = AF_INET;
1228		ipn.ss_port = 0;
1229	<	memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr));
1229	>	memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1230		comm_connect_tcp(&client_p->localClient->fd, aconf->host, aconf->port,
1231		(struct sockaddr *)&ipn, ipn.ss_len,
1232		serv_connect_callback, client_p, aconf->aftype,
#	Line 1733 | Line 1257 | serv_connect(struct AccessItem *aconf, s
1257		struct sockaddr_in6 *v6conf;
1258
1259		memset(&ipn, 0, sizeof(struct irc_ssaddr));
1260	<	v6conf = (struct sockaddr_in6 *)&aconf->my_ipnum;
1260	>	v6conf = (struct sockaddr_in6 *)&aconf->bind;
1261		v6 = (struct sockaddr_in6 *)&ipn;
1262
1263		if (memcmp(&v6conf->sin6_addr, &v6->sin6_addr,
1264		sizeof(struct in6_addr)) != 0)
1265		{
1266	<	memcpy(&ipn, &aconf->my_ipnum, sizeof(struct irc_ssaddr));
1266	>	memcpy(&ipn, &aconf->bind, sizeof(struct irc_ssaddr));
1267		ipn.ss.ss_family = AF_INET6;
1268		ipn.ss_port = 0;
1269		comm_connect_tcp(&client_p->localClient->fd,
#	Line 1770 | Line 1294 | serv_connect(struct AccessItem *aconf, s
1294		return (1);
1295		}
1296
1297	+	#ifdef HAVE_LIBCRYPTO
1298	+	static void
1299	+	finish_ssl_server_handshake(struct Client *client_p)
1300	+	{
1301	+	struct ConfItem *conf=NULL;
1302	+	struct AccessItem *aconf=NULL;
1303	+
1304	+	conf = find_conf_name(&client_p->localClient->confs,
1305	+	client_p->name, SERVER_TYPE);
1306	+	if (conf == NULL)
1307	+	{
1308	+	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1309	+	"Lost connect{} block for %s", get_client_name(client_p, HIDE_IP));
1310	+	sendto_realops_flags(UMODE_ALL, L_OPER,
1311	+	"Lost connect{} block for %s", get_client_name(client_p, MASK_IP));
1312	+
1313	+	exit_client(client_p, &me, "Lost connect{} block");
1314	+	return;
1315	+	}
1316	+
1317	+	aconf = map_to_conf(conf);
1318	+
1319	+	/* jdc -- Check and send spasswd, not passwd. */
1320	+	if (!EmptyString(aconf->spasswd))
1321	+	sendto_one(client_p, "PASS %s TS %d %s",
1322	+	aconf->spasswd, TS_CURRENT, me.id);
1323	+
1324	+	send_capabilities(client_p, aconf,
1325	+	(IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
1326	+
1327	+	sendto_one(client_p, "SERVER %s 1 :%s%s",
1328	+	me.name, ConfigServerHide.hidden ? "(H) " : "",
1329	+	me.info);
1330	+
1331	+	/* If we've been marked dead because a send failed, just exit
1332	+	* here now and save everyone the trouble of us ever existing.
1333	+	*/
1334	+	if (IsDead(client_p))
1335	+	{
1336	+	sendto_realops_flags(UMODE_ALL, L_ADMIN,
1337	+	"%s[%s] went dead during handshake",
1338	+	client_p->name,
1339	+	client_p->host);
1340	+	sendto_realops_flags(UMODE_ALL, L_OPER,
1341	+	"%s went dead during handshake", client_p->name);
1342	+	return;
1343	+	}
1344	+
1345	+	/* don't move to serv_list yet -- we haven't sent a burst! */
1346	+	/* If we get here, we're ok, so lets start reading some data */
1347	+	comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ, read_packet, client_p, 0);
1348	+	}
1349	+
1350	+	static void
1351	+	ssl_server_handshake(fde_t *fd, struct Client *client_p)
1352	+	{
1353	+	int ret;
1354	+	int err;
1355	+
1356	+	ret = SSL_connect(client_p->localClient->fd.ssl);
1357	+
1358	+	if (ret <= 0)
1359	+	{
1360	+	switch ((err = SSL_get_error(client_p->localClient->fd.ssl, ret)))
1361	+	{
1362	+	case SSL_ERROR_WANT_WRITE:
1363	+	comm_setselect(&client_p->localClient->fd, COMM_SELECT_WRITE,
1364	+	(PF *)ssl_server_handshake, client_p, 0);
1365	+	return;
1366	+	case SSL_ERROR_WANT_READ:
1367	+	comm_setselect(&client_p->localClient->fd, COMM_SELECT_READ,
1368	+	(PF *)ssl_server_handshake, client_p, 0);
1369	+	return;
1370	+	default:
1371	+	{
1372	+	const char *sslerr = ERR_error_string(ERR_get_error(), NULL);
1373	+	sendto_realops_flags(UMODE_ALL, L_ALL,
1374	+	"Error connecting to %s: %s", client_p->name,
1375	+	sslerr ? sslerr : "unknown SSL error");
1376	+	exit_client(client_p, client_p, "Error during SSL handshake");
1377	+	return;
1378	+	}
1379	+	}
1380	+	}
1381	+
1382	+	finish_ssl_server_handshake(client_p);
1383	+	}
1384	+
1385	+	static void
1386	+	ssl_connect_init(struct Client *client_p, struct AccessItem *aconf, fde_t *fd)
1387	+	{
1388	+	if ((client_p->localClient->fd.ssl = SSL_new(ServerInfo.client_ctx)) == NULL)
1389	+	{
1390	+	ilog(LOG_TYPE_IRCD, "SSL_new() ERROR! -- %s",
1391	+	ERR_error_string(ERR_get_error(), NULL));
1392	+	SetDead(client_p);
1393	+	exit_client(client_p, client_p, "SSL_new failed");
1394	+	return;
1395	+	}
1396	+
1397	+	SSL_set_fd(fd->ssl, fd->fd);
1398	+
1399	+	if (!EmptyString(aconf->cipher_list))
1400	+	SSL_set_cipher_list(client_p->localClient->fd.ssl, aconf->cipher_list);
1401	+
1402	+	ssl_server_handshake(NULL, client_p);
1403	+	}
1404	+	#endif
1405	+
1406		/* serv_connect_callback() - complete a server connection.
1407		*
1408		* This routine is called after the server connection attempt has
#	Line 1833 | Line 1466 | serv_connect_callback(fde_t *fd, int sta
1466		return;
1467		}
1468
1469	<	aconf = (struct AccessItem *)map_to_conf(conf);
1469	>	aconf = map_to_conf(conf);
1470		/* Next, send the initial handshake */
1471		SetHandshake(client_p);
1472
1473		#ifdef HAVE_LIBCRYPTO
1474	<	/* Handle all CRYPTLINK links in cryptlink_init */
1842	<	if (IsConfCryptLink(aconf))
1474	>	if (IsConfSSL(aconf))
1475		{
1476	<	cryptlink_init(client_p, conf, fd);
1476	>	ssl_connect_init(client_p, aconf, fd);
1477		return;
1478		}
1479		#endif
1480
1481		/* jdc -- Check and send spasswd, not passwd. */
1482	<	if (!EmptyString(aconf->spasswd) && (me.id[0] != '\0'))
1851	<	/* Send TS 6 form only if id */
1482	>	if (!EmptyString(aconf->spasswd))
1483		sendto_one(client_p, "PASS %s TS %d %s",
1484		aconf->spasswd, TS_CURRENT, me.id);
1854	–	else
1855	–	sendto_one(client_p, "PASS %s TS 5",
1856	–	aconf->spasswd);
1485
1486	<	/* Pass my info to the new server
1487	<	*
1860	<	* If this is a HUB, pass on CAP_HUB
1861	<	* Pass on ZIP if supported
1862	<	* Pass on TB if supported.
1863	<	* - Dianora
1864	<	*/
1865	<	send_capabilities(client_p, aconf, (ServerInfo.hub ? CAP_HUB : 0)
1866	<	| (IsConfCompressed(aconf) ? CAP_ZIP : 0)
1867	<	| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), 0);
1486	>	send_capabilities(client_p, aconf,
1487	>	(IsConfTopicBurst(aconf) ? CAP_TBURST : 0));
1488
1489		sendto_one(client_p, "SERVER %s 1 :%s%s",
1490	<	my_name_for_link(conf),
1871	<	ConfigServerHide.hidden ? "(H) " : "",
1490	>	me.name, ConfigServerHide.hidden ? "(H) " : "",
1491		me.info);
1492
1493		/* If we've been marked dead because a send failed, just exit
#	Line 1901 | Line 1520 | find_servconn_in_progress(const char *na
1520		cptr = ptr->data;
1521
1522		if (cptr && cptr->name[0])
1523	<	if (match(cptr->name, name) || match(name, cptr->name))
1523	>	if (match(name, cptr->name))
1524		return cptr;
1525		}
1526
1527		return NULL;
1528		}
1910	–
1911	–	#ifdef HAVE_LIBCRYPTO
1912	–	/*
1913	–	* sends a CRYPTLINK SERV command.
1914	–	*/
1915	–	void
1916	–	cryptlink_init(struct Client *client_p, struct ConfItem *conf, fde_t *fd)
1917	–	{
1918	–	struct AccessItem *aconf;
1919	–	char *encrypted;
1920	–	unsigned char *key_to_send;
1921	–	char randkey[CIPHERKEYLEN];
1922	–	int enc_len;
1923	–
1924	–	/* get key */
1925	–	if ((!ServerInfo.rsa_private_key) ||
1926	–	(!RSA_check_key(ServerInfo.rsa_private_key)) )
1927	–	{
1928	–	cryptlink_error(client_p, "SERV", "Invalid RSA private key",
1929	–	"Invalid RSA private key");
1930	–	return;
1931	–	}
1932	–
1933	–	aconf = (struct AccessItem *)map_to_conf(conf);
1934	–
1935	–	if (aconf->rsa_public_key == NULL)
1936	–	{
1937	–	cryptlink_error(client_p, "SERV", "Invalid RSA public key",
1938	–	"Invalid RSA public key");
1939	–	return;
1940	–	}
1941	–
1942	–	if (get_randomness((unsigned char *)randkey, CIPHERKEYLEN) != 1)
1943	–	{
1944	–	cryptlink_error(client_p, "SERV", "Couldn't generate keyphrase",
1945	–	"Couldn't generate keyphrase");
1946	–	return;
1947	–	}
1948	–
1949	–	encrypted = MyMalloc(RSA_size(ServerInfo.rsa_private_key));
1950	–	enc_len   = RSA_public_encrypt(CIPHERKEYLEN,
1951	–	(unsigned char *)randkey,
1952	–	(unsigned char *)encrypted,
1953	–	aconf->rsa_public_key,
1954	–	RSA_PKCS1_PADDING);
1955	–
1956	–	memcpy(client_p->localClient->in_key, randkey, CIPHERKEYLEN);
1957	–
1958	–	if (enc_len <= 0)
1959	–	{
1960	–	report_crypto_errors();
1961	–	MyFree(encrypted);
1962	–	cryptlink_error(client_p, "SERV", "Couldn't encrypt data",
1963	–	"Couldn't encrypt data");
1964	–	return;
1965	–	}
1966	–
1967	–	if (!(base64_block(&key_to_send, encrypted, enc_len)))
1968	–	{
1969	–	MyFree(encrypted);
1970	–	cryptlink_error(client_p, "SERV", "Couldn't base64 encode key",
1971	–	"Couldn't base64 encode key");
1972	–	return;
1973	–	}
1974	–
1975	–	send_capabilities(client_p, aconf, (ServerInfo.hub ? CAP_HUB : 0)
1976	–	| (IsConfCompressed(aconf) ? CAP_ZIP : 0)
1977	–	| (IsConfTopicBurst(aconf) ? CAP_TBURST|CAP_TB : 0), CAP_ENC_MASK);
1978	–
1979	–	if (me.id[0])
1980	–	sendto_one(client_p, "PASS . TS %d %s", TS_CURRENT, me.id);
1981	–
1982	–	sendto_one(client_p, "CRYPTLINK SERV %s %s :%s%s",
1983	–	my_name_for_link(conf), key_to_send,
1984	–	ConfigServerHide.hidden ? "(H) " : "", me.info);
1985	–
1986	–	SetHandshake(client_p);
1987	–	SetWaitAuth(client_p);
1988	–
1989	–	MyFree(encrypted);
1990	–	MyFree(key_to_send);
1991	–
1992	–	if (IsDead(client_p))
1993	–	cryptlink_error(client_p, "SERV", "Went dead during handshake",
1994	–	"Went dead during handshake");
1995	–	else if (fd != NULL)
1996	–	/* If we get here, we're ok, so lets start reading some data */
1997	–	comm_setselect(fd, COMM_SELECT_READ, read_packet, client_p, 0);
1998	–	}
1999	–
2000	–	void
2001	–	cryptlink_error(struct Client *client_p, const char *type,
2002	–	const char *reason, const char *client_reason)
2003	–	{
2004	–	sendto_realops_flags(UMODE_ALL, L_ADMIN, "%s: CRYPTLINK %s error - %s",
2005	–	get_client_name(client_p, SHOW_IP), type, reason);
2006	–	sendto_realops_flags(UMODE_ALL, L_OPER,  "%s: CRYPTLINK %s error - %s",
2007	–	get_client_name(client_p, MASK_IP), type, reason);
2008	–	ilog(L_ERROR, "%s: CRYPTLINK %s error - %s",
2009	–	get_client_name(client_p, SHOW_IP), type, reason);
2010	–
2011	–	/* If client_reason isn't NULL, then exit the client with the message
2012	–	* defined in the call.
2013	–	*/
2014	–	if ((client_reason != NULL) && (!IsDead(client_p)))
2015	–	exit_client(client_p, &me, client_reason);
2016	–	}
2017	–
2018	–	static char base64_chars[] =
2019	–	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
2020	–
2021	–	static char base64_values[] =
2022	–	{
2023	–	/* 00-15   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2024	–	/* 16-31   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2025	–	/* 32-47   */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
2026	–	/* 48-63   */ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1,  0, -1, -1,
2027	–	/* 64-79   */ -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
2028	–	/* 80-95   */ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
2029	–	/* 96-111  */ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
2030	–	/* 112-127 */ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
2031	–	/* 128-143 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2032	–	/* 144-159 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2033	–	/* 160-175 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2034	–	/* 186-191 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2035	–	/* 192-207 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2036	–	/* 208-223 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2037	–	/* 224-239 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
2038	–	/* 240-255 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
2039	–	};
2040	–
2041	–	/*
2042	–	* base64_block will allocate and return a new block of memory
2043	–	* using MyMalloc().  It should be freed after use.
2044	–	*/
2045	–	int
2046	–	base64_block(unsigned char **output, char *data, int len)
2047	–	{
2048	–	unsigned char *out;
2049	–	unsigned char *in = (unsigned char*)data;
2050	–	unsigned long int q_in;
2051	–	int i;
2052	–	int count = 0;
2053	–
2054	–	out = MyMalloc(((((len + 2) - ((len + 2) % 3)) / 3) * 4) + 1);
2055	–
2056	–	/* process 24 bits at a time */
2057	–	for( i = 0; i < len; i += 3)
2058	–	{
2059	–	q_in = 0;
2060	–
2061	–	if ( i + 2 < len )
2062	–	{
2063	–	q_in  = (in[i+2] & 0xc0) << 2;
2064	–	q_in |=  in[i+2];
2065	–	}
2066	–
2067	–	if ( i + 1 < len )
2068	–	{
2069	–	q_in |= (in[i+1] & 0x0f) << 10;
2070	–	q_in |= (in[i+1] & 0xf0) << 12;
2071	–	}
2072	–
2073	–	q_in |= (in[i]   & 0x03) << 20;
2074	–	q_in |=  in[i]           << 22;
2075	–
2076	–	q_in &= 0x3f3f3f3f;
2077	–
2078	–	out[count++] = base64_chars[((q_in >> 24)       )];
2079	–	out[count++] = base64_chars[((q_in >> 16) & 0xff)];
2080	–	out[count++] = base64_chars[((q_in >>  8) & 0xff)];
2081	–	out[count++] = base64_chars[((q_in      ) & 0xff)];
2082	–	}
2083	–	if ( (i - len) > 0 )
2084	–	{
2085	–	out[count-1] = '=';
2086	–	if ( (i - len) > 1 )
2087	–	out[count-2] = '=';
2088	–	}
2089	–
2090	–	out[count] = '\0';
2091	–	*output = out;
2092	–	return (count);
2093	–	}
2094	–
2095	–	/*
2096	–	* unbase64_block will allocate and return a new block of memory
2097	–	* using MyMalloc().  It should be freed after use.
2098	–	*/
2099	–	int
2100	–	unbase64_block(unsigned char **output, char *data, int len)
2101	–	{
2102	–	unsigned char *out;
2103	–	unsigned char *in = (unsigned char*)data;
2104	–	unsigned long int q_in;
2105	–	int i;
2106	–	int count = 0;
2107	–
2108	–	if ((len % 4) != 0)
2109	–	return (0);
2110	–
2111	–	out = MyMalloc(((len / 4) * 3) + 1);
2112	–
2113	–	/* process 32 bits at a time */
2114	–	for( i = 0; (i + 3) < len; i+=4)
2115	–	{
2116	–	/* compress input (chars a, b, c and d) as follows:
2117	–	* (after converting ascii -> base64 value)
2118	–	*
2119	–	* |00000000aaaaaabbbbbbccccccdddddd|
2120	–	* |  765432  107654  321076  543210|
2121	–	*/
2122	–
2123	–	q_in = 0;
2124	–
2125	–	if (base64_values[in[i+3]] > -1)
2126	–	q_in |= base64_values[in[i+3]]      ;
2127	–	if (base64_values[in[i+2]] > -1)
2128	–	q_in |= base64_values[in[i+2]] <<  6;
2129	–	if (base64_values[in[i+1]] > -1)
2130	–	q_in |= base64_values[in[i+1]] << 12;
2131	–	if (base64_values[in[i  ]] > -1)
2132	–	q_in |= base64_values[in[i  ]] << 18;
2133	–
2134	–	out[count++] = (q_in >> 16) & 0xff;
2135	–	out[count++] = (q_in >>  8) & 0xff;
2136	–	out[count++] = (q_in      ) & 0xff;
2137	–	}
2138	–
2139	–	if (in[i-1] == '=') count--;
2140	–	if (in[i-2] == '=') count--;
2141	–
2142	–	out[count] = '\0';
2143	–	*output = out;
2144	–	return (count);
2145	–	}
2146	–
2147	–	#endif /* HAVE_LIBCRYPTO */
2148	–

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