1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 * @brief functions pertaining to virtual host addresses
20 * (configuration and run-time)
24 #include "apr_strings.h"
27 #define APR_WANT_STRFUNC
31 #include "ap_config.h"
33 #include "http_config.h"
35 #include "http_vhost.h"
36 #include "http_protocol.h"
37 #include "http_core.h"
39 #if APR_HAVE_ARPA_INET_H
40 #include <arpa/inet.h>
44 * After all the definitions there's an explanation of how it's all put
48 /* meta-list of name-vhosts. Each server_rec can be in possibly multiple
49 * lists of name-vhosts.
51 typedef struct name_chain name_chain;
54 server_addr_rec *sar; /* the record causing it to be in
55 * this chain (needed for port comparisons) */
56 server_rec *server; /* the server to use on a match */
59 /* meta-list of ip addresses. Each server_rec can be in possibly multiple
60 * hash chains since it can have multiple ips.
62 typedef struct ipaddr_chain ipaddr_chain;
65 server_addr_rec *sar; /* the record causing it to be in
66 * this chain (need for both ip addr and port
68 server_rec *server; /* the server to use if this matches */
69 name_chain *names; /* if non-NULL then a list of name-vhosts
70 * sharing this address */
73 /* This defines the size of the hash table used for hashing ip addresses
74 * of virtual hosts. It must be a power of two.
76 #ifndef IPHASH_TABLE_SIZE
77 #define IPHASH_TABLE_SIZE 256
80 /* A (n) bucket hash table, each entry has a pointer to a server rec and
81 * a pointer to the other entries in that bucket. Each individual address,
82 * even for virtualhosts with multiple addresses, has an entry in this hash
83 * table. There are extra buckets for _default_, and name-vhost entries.
85 * Note that after config time this is constant, so it is thread-safe.
87 static ipaddr_chain *iphash_table[IPHASH_TABLE_SIZE];
89 /* dump out statistics about the hash function */
90 /* #define IPHASH_STATISTICS */
92 /* list of the _default_ servers */
93 static ipaddr_chain *default_list;
95 /* list of the NameVirtualHost addresses */
96 static server_addr_rec *name_vhost_list;
97 static server_addr_rec **name_vhost_list_tail;
102 * The ip address determines which chain in iphash_table is interesting, then
103 * a comparison is done down that chain to find the first ipaddr_chain whose
104 * sar matches the address:port pair.
106 * If that ipaddr_chain has names == NULL then you're done, it's an ip-vhost.
108 * Otherwise it's a name-vhost list, and the default is the server in the
109 * ipaddr_chain record. We tuck away the ipaddr_chain record in the
110 * conn_rec field vhost_lookup_data. Later on after the headers we get a
111 * second chance, and we use the name_chain to figure out what name-vhost
112 * matches the headers.
114 * If there was no ip address match in the iphash_table then do a lookup
115 * in the default_list.
117 * How it's put together ... well you should be able to figure that out
118 * from how it's used. Or something like that.
122 /* called at the beginning of the config */
123 AP_DECLARE(void) ap_init_vhost_config(apr_pool_t *p)
125 memset(iphash_table, 0, sizeof(iphash_table));
127 name_vhost_list = NULL;
128 name_vhost_list_tail = &name_vhost_list;
133 * Parses a host of the form <address>[:port]
134 * paddr is used to create a list in the order of input
135 * **paddr is the ->next pointer of the last entry (or s->addrs)
136 * *paddr is the variable used to keep track of **paddr between calls
137 * port is the default port to assume
139 static const char *get_addresses(apr_pool_t *p, const char *w_,
140 server_addr_rec ***paddr,
141 apr_port_t default_port)
143 apr_sockaddr_t *my_addr;
144 server_addr_rec *sar;
145 char *w, *host, *scope_id;
154 w = apr_pstrdup(p, w_);
155 /* apr_parse_addr_port() doesn't understand ":*" so handle that first. */
156 wlen = strlen(w); /* wlen must be > 0 at this point */
158 if (w[wlen - 1] == '*') {
162 else if (w[wlen - 2] == ':') {
167 rv = apr_parse_addr_port(&host, &scope_id, &port, w, p);
168 /* If the string is "80", apr_parse_addr_port() will be happy and set
169 * host to NULL and port to 80, so watch out for that.
171 if (rv != APR_SUCCESS) {
172 return "The address or port is invalid";
175 return "Missing address for VirtualHost";
178 return "Scope ids are not supported";
180 if (!port && !wild_port) {
184 if (strcmp(host, "*") == 0) {
185 rv = apr_sockaddr_info_get(&my_addr, "0.0.0.0", APR_INET, port, 0, p);
187 return "Could not resolve address '0.0.0.0' -- "
188 "check resolver configuration.";
191 else if (strcasecmp(host, "_default_") == 0
192 || strcmp(host, "255.255.255.255") == 0) {
193 rv = apr_sockaddr_info_get(&my_addr, "255.255.255.255", APR_INET, port, 0, p);
195 return "Could not resolve address '255.255.255.255' -- "
196 "check resolver configuration.";
200 rv = apr_sockaddr_info_get(&my_addr, host, APR_UNSPEC, port, 0, p);
201 if (rv != APR_SUCCESS) {
202 ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL,
203 "Could not resolve host name %s -- ignoring!", host);
208 /* Remember all addresses for the host */
211 sar = apr_pcalloc(p, sizeof(server_addr_rec));
214 sar->host_addr = my_addr;
215 sar->host_port = port;
216 sar->virthost = host;
217 my_addr = my_addr->next;
224 /* parse the <VirtualHost> addresses */
225 const char *ap_parse_vhost_addrs(apr_pool_t *p,
226 const char *hostname,
229 server_addr_rec **addrs;
232 /* start the list of addreses */
234 while (hostname[0]) {
235 err = get_addresses(p, ap_getword_conf(p, &hostname), &addrs, s->port);
241 /* terminate the list */
244 if (s->addrs->host_port) {
245 /* override the default port which is inherited from main_server */
246 s->port = s->addrs->host_port;
253 const char *ap_set_name_virtual_host(cmd_parms *cmd, void *dummy,
256 /* use whatever port the main server has at this point */
257 return get_addresses(cmd->pool, arg, &name_vhost_list_tail,
262 /* hash table statistics, keep this in here for the beta period so
263 * we can find out if the hash function is ok
265 #ifdef IPHASH_STATISTICS
266 static int iphash_compare(const void *a, const void *b)
268 return (*(const int *) b - *(const int *) a);
272 static void dump_iphash_statistics(server_rec *main_s)
274 unsigned count[IPHASH_TABLE_SIZE];
278 char buf[HUGE_STRING_LEN];
282 for (i = 0; i < IPHASH_TABLE_SIZE; ++i) {
284 for (src = iphash_table[i]; src; src = src->next) {
286 if (i < IPHASH_TABLE_SIZE) {
287 /* don't count the slop buckets in the total */
292 qsort(count, IPHASH_TABLE_SIZE, sizeof(count[0]), iphash_compare);
293 p = buf + apr_snprintf(buf, sizeof(buf),
294 "iphash: total hashed = %u, avg chain = %u, "
295 "chain lengths (count x len):",
296 total, total / IPHASH_TABLE_SIZE);
298 for (i = 1; i < IPHASH_TABLE_SIZE; ++i) {
299 if (count[i - 1] != count[i]) {
300 p += apr_snprintf(p, sizeof(buf) - (p - buf), " %ux%u",
301 total, count[i - 1]);
308 p += apr_snprintf(p, sizeof(buf) - (p - buf), " %ux%u",
309 total, count[IPHASH_TABLE_SIZE - 1]);
310 ap_log_error(APLOG_MARK, APLOG_DEBUG, main_s, buf);
315 /* This hashing function is designed to get good distribution in the cases
316 * where the server is handling entire "networks" of servers. i.e. a
317 * whack of /24s. This is probably the most common configuration for
318 * ISPs with large virtual servers.
320 * NOTE: This function is symmetric (i.e. collapses all 4 octets
321 * into one), so machine byte order (big/little endianness) does not matter.
323 * Hash function provided by David Hankins.
325 static APR_INLINE unsigned hash_inaddr(unsigned key)
328 return ((key >> 8) ^ key) % IPHASH_TABLE_SIZE;
331 static APR_INLINE unsigned hash_addr(struct apr_sockaddr_t *sa)
335 /* The key is the last four bytes of the IP address.
336 * For IPv4, this is the entire address, as always.
337 * For IPv6, this is usually part of the MAC address.
339 key = *(unsigned *)((char *)sa->ipaddr_ptr + sa->ipaddr_len - 4);
340 return hash_inaddr(key);
343 static ipaddr_chain *new_ipaddr_chain(apr_pool_t *p,
344 server_rec *s, server_addr_rec *sar)
348 new = apr_palloc(p, sizeof(*new));
357 static name_chain *new_name_chain(apr_pool_t *p,
358 server_rec *s, server_addr_rec *sar)
362 new = apr_palloc(p, sizeof(*new));
370 static APR_INLINE ipaddr_chain *find_ipaddr(apr_sockaddr_t *sa)
375 /* scan the hash table for an exact match first */
376 bucket = hash_addr(sa);
377 for (trav = iphash_table[bucket]; trav; trav = trav->next) {
378 server_addr_rec *sar = trav->sar;
379 apr_sockaddr_t *cur = sar->host_addr;
381 if (cur->port == 0 || sa->port == 0 || cur->port == sa->port) {
382 if (apr_sockaddr_equal(cur, sa)) {
390 static ipaddr_chain *find_default_server(apr_port_t port)
392 server_addr_rec *sar;
395 for (trav = default_list; trav; trav = trav->next) {
397 if (sar->host_port == 0 || sar->host_port == port) {
405 static void dump_a_vhost(apr_file_t *f, ipaddr_chain *ic)
409 char buf[MAX_STRING_LEN];
410 apr_sockaddr_t *ha = ic->sar->host_addr;
412 if (ha->family == APR_INET &&
413 ha->sa.sin.sin_addr.s_addr == DEFAULT_VHOST_ADDR) {
414 len = apr_snprintf(buf, sizeof(buf), "_default_:%u",
417 else if (ha->family == APR_INET &&
418 ha->sa.sin.sin_addr.s_addr == INADDR_ANY) {
419 len = apr_snprintf(buf, sizeof(buf), "*:%u",
423 len = apr_snprintf(buf, sizeof(buf), "%pI", ha);
425 if (ic->sar->host_port == 0) {
428 if (ic->names == NULL) {
429 apr_file_printf(f, "%-22s %s (%s:%u)\n", buf,
430 ic->server->server_hostname,
431 ic->server->defn_name, ic->server->defn_line_number);
434 apr_file_printf(f, "%-22s is a NameVirtualHost\n"
435 "%8s default server %s (%s:%u)\n",
436 buf, "", ic->server->server_hostname,
437 ic->server->defn_name, ic->server->defn_line_number);
438 for (nc = ic->names; nc; nc = nc->next) {
439 if (nc->sar->host_port) {
440 apr_file_printf(f, "%8s port %u ", "", nc->sar->host_port);
443 apr_file_printf(f, "%8s port * ", "");
445 apr_file_printf(f, "namevhost %s (%s:%u)\n",
446 nc->server->server_hostname,
447 nc->server->defn_name, nc->server->defn_line_number);
451 static void dump_vhost_config(apr_file_t *f)
456 apr_file_printf(f, "VirtualHost configuration:\n");
457 for (i = 0; i < IPHASH_TABLE_SIZE; ++i) {
458 for (ic = iphash_table[i]; ic; ic = ic->next) {
463 apr_file_printf(f, "wildcard NameVirtualHosts and _default_ servers:\n");
464 for (ic = default_list; ic; ic = ic->next) {
471 * Two helper functions for ap_fini_vhost_config()
473 static int add_name_vhost_config(apr_pool_t *p, server_rec *main_s,
474 server_rec *s, server_addr_rec *sar,
477 /* the first time we encounter a NameVirtualHost address
478 * ic->server will be NULL, on subsequent encounters
479 * ic->names will be non-NULL.
481 if (ic->names || ic->server == NULL) {
482 name_chain *nc = new_name_chain(p, s, sar);
483 nc->next = ic->names;
486 if (sar->host_port != ic->sar->host_port) {
487 /* one of the two is a * port, the other isn't */
488 ap_log_error(APLOG_MARK, APLOG_ERR, 0, main_s,
489 "VirtualHost %s:%u -- mixing * "
490 "ports and non-* ports with "
491 "a NameVirtualHost address is not supported,"
492 " proceeding with undefined results",
493 sar->virthost, sar->host_port);
498 /* IP-based vhosts are handled by the caller */
503 static void remove_unused_name_vhosts(server_rec *main_s, ipaddr_chain **pic)
506 ipaddr_chain *ic = *pic;
508 if (ic->server == NULL) {
509 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, main_s,
510 "NameVirtualHost %s:%u has no VirtualHosts",
511 ic->sar->virthost, ic->sar->host_port);
520 /* compile the tables and such we need to do the run-time vhost lookups */
521 AP_DECLARE(void) ap_fini_vhost_config(apr_pool_t *p, server_rec *main_s)
523 server_addr_rec *sar;
524 int has_default_vhost_addr;
527 ipaddr_chain **iphash_table_tail[IPHASH_TABLE_SIZE];
529 /* terminate the name_vhost list */
530 *name_vhost_list_tail = NULL;
532 /* Main host first */
535 if (!s->server_hostname) {
536 s->server_hostname = ap_get_local_host(p);
539 /* initialize the tails */
540 for (i = 0; i < IPHASH_TABLE_SIZE; ++i) {
541 iphash_table_tail[i] = &iphash_table[i];
544 /* The first things to go into the hash table are the NameVirtualHosts
545 * Since name_vhost_list is in the same order that the directives
546 * occured in the config file, we'll copy it in that order.
548 for (sar = name_vhost_list; sar; sar = sar->next) {
549 char inaddr_any[16] = {0}; /* big enough to handle IPv4 or IPv6 */
550 unsigned bucket = hash_addr(sar->host_addr);
551 ipaddr_chain *ic = new_ipaddr_chain(p, NULL, sar);
553 if (memcmp(sar->host_addr->ipaddr_ptr, inaddr_any,
554 sar->host_addr->ipaddr_len)) { /* not IN[6]ADDR_ANY */
555 *iphash_table_tail[bucket] = ic;
556 iphash_table_tail[bucket] = &ic->next;
559 /* A wildcard NameVirtualHost goes on the default_list so
560 * that it can catch incoming requests on any address.
562 ic->next = default_list;
565 /* Notice that what we've done is insert an ipaddr_chain with
566 * both server and names NULL. This fact is used to spot name-
567 * based vhosts in add_name_vhost_config().
571 /* The next things to go into the hash table are the virtual hosts
572 * themselves. They're listed off of main_s->next in the reverse
573 * order they occured in the config file, so we insert them at
574 * the iphash_table_tail but don't advance the tail.
577 for (s = main_s->next; s; s = s->next) {
578 has_default_vhost_addr = 0;
579 for (sar = s->addrs; sar; sar = sar->next) {
581 char inaddr_any[16] = {0}; /* big enough to handle IPv4 or IPv6 */
583 if ((sar->host_addr->family == AF_INET &&
584 sar->host_addr->sa.sin.sin_addr.s_addr == DEFAULT_VHOST_ADDR)
585 || !memcmp(sar->host_addr->ipaddr_ptr, inaddr_any, sar->host_addr->ipaddr_len)) {
586 ic = find_default_server(sar->host_port);
587 if (!ic || !add_name_vhost_config(p, main_s, s, sar, ic)) {
588 if (ic && ic->sar->host_port != 0) {
589 ap_log_error(APLOG_MARK, APLOG_WARNING,
590 0, main_s, "_default_ VirtualHost "
591 "overlap on port %u, the first has "
592 "precedence", sar->host_port);
594 ic = new_ipaddr_chain(p, s, sar);
595 ic->next = default_list;
598 has_default_vhost_addr = 1;
601 /* see if it matches something we've already got */
602 ic = find_ipaddr(sar->host_addr);
605 unsigned bucket = hash_addr(sar->host_addr);
607 ic = new_ipaddr_chain(p, s, sar);
608 ic->next = *iphash_table_tail[bucket];
609 *iphash_table_tail[bucket] = ic;
611 else if (!add_name_vhost_config(p, main_s, s, sar, ic)) {
612 ap_log_error(APLOG_MARK, APLOG_WARNING,
613 0, main_s, "VirtualHost %s:%u overlaps "
614 "with VirtualHost %s:%u, the first has "
615 "precedence, perhaps you need a "
616 "NameVirtualHost directive",
617 sar->virthost, sar->host_port,
618 ic->sar->virthost, ic->sar->host_port);
625 /* Ok now we want to set up a server_hostname if the user was
626 * silly enough to forget one.
627 * XXX: This is silly we should just crash and burn.
629 if (!s->server_hostname) {
630 if (has_default_vhost_addr) {
631 s->server_hostname = main_s->server_hostname;
633 else if (!s->addrs) {
634 /* what else can we do? at this point this vhost has
635 no configured name, probably because they used
636 DNS in the VirtualHost statement. It's disabled
637 anyhow by the host matching code. -djg */
639 apr_pstrdup(p, "bogus_host_without_forward_dns");
645 rv = apr_getnameinfo(&hostname, s->addrs->host_addr, 0);
646 if (rv == APR_SUCCESS) {
647 s->server_hostname = apr_pstrdup(p, hostname);
650 /* again, what can we do? They didn't specify a
651 ServerName, and their DNS isn't working. -djg */
654 apr_sockaddr_ip_get(&ipaddr_str, s->addrs->host_addr);
655 ap_log_error(APLOG_MARK, APLOG_ERR, rv, main_s,
656 "Failed to resolve server name "
657 "for %s (check DNS) -- or specify an explicit "
661 apr_pstrdup(p, "bogus_host_without_reverse_dns");
667 /* now go through and delete any NameVirtualHosts that didn't have any
668 * hosts associated with them. Lamers.
670 for (i = 0; i < IPHASH_TABLE_SIZE; ++i) {
671 remove_unused_name_vhosts(main_s, &iphash_table[i]);
673 remove_unused_name_vhosts(main_s, &default_list);
675 #ifdef IPHASH_STATISTICS
676 dump_iphash_statistics(main_s);
678 if (ap_exists_config_define("DUMP_VHOSTS")) {
679 apr_file_t *thefile = NULL;
680 apr_file_open_stderr(&thefile, p);
681 dump_vhost_config(thefile);
686 /*****************************************************************************
687 * run-time vhost matching functions
690 /* Lowercase and remove any trailing dot and/or :port from the hostname,
691 * and check that it is sane.
693 * In most configurations the exact syntax of the hostname isn't
694 * important so strict sanity checking isn't necessary. However, in
695 * mass hosting setups (using mod_vhost_alias or mod_rewrite) where
696 * the hostname is interpolated into the filename, we need to be sure
697 * that the interpolation doesn't expose parts of the filesystem.
698 * We don't do strict RFC 952 / RFC 1123 syntax checking in order
699 * to support iDNS and people who erroneously use underscores.
700 * Instead we just check for filesystem metacharacters: directory
701 * separators / and \ and sequences of more than one dot.
703 static void fix_hostname(request_rec *r)
705 char *host, *scope_id;
710 /* According to RFC 2616, Host header field CAN be blank. */
715 rv = apr_parse_addr_port(&host, &scope_id, &port, r->hostname, r->pool);
716 if (rv != APR_SUCCESS || scope_id) {
721 /* silly looking host ("Host: 123") but that isn't our job
722 * here to judge; apr_parse_addr_port() would think we had a port
725 host = apr_itoa(r->pool, (int)port);
728 /* Don't throw the Host: header's port number away:
729 save it in parsed_uri -- ap_get_server_port() needs it! */
730 /* @@@ XXX there should be a better way to pass the port.
731 * Like r->hostname, there should be a r->portno
733 r->parsed_uri.port = port;
734 r->parsed_uri.port_str = apr_itoa(r->pool, (int)port);
737 /* if the hostname is an IPv6 numeric address string, it was validated
738 * already; otherwise, further validation is needed
740 if (r->hostname[0] != '[') {
741 for (dst = host; *dst; dst++) {
742 if (apr_islower(*dst)) {
743 /* leave char unchanged */
745 else if (*dst == '.') {
746 if (*(dst + 1) == '.') {
750 else if (apr_isupper(*dst)) {
751 *dst = apr_tolower(*dst);
753 else if (*dst == '/' || *dst == '\\') {
757 /* strip trailing gubbins */
758 if (dst > host && dst[-1] == '.') {
766 r->status = HTTP_BAD_REQUEST;
767 ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
768 "Client sent malformed Host header");
773 /* return 1 if host matches ServerName or ServerAliases */
774 static int matches_aliases(server_rec *s, const char *host)
777 apr_array_header_t *names;
779 /* match ServerName */
780 if (!strcasecmp(host, s->server_hostname)) {
784 /* search all the aliases from ServerAlias directive */
787 char **name = (char **) names->elts;
788 for (i = 0; i < names->nelts; ++i) {
789 if(!name[i]) continue;
790 if (!strcasecmp(host, name[i]))
794 names = s->wild_names;
796 char **name = (char **) names->elts;
797 for (i = 0; i < names->nelts; ++i) {
798 if(!name[i]) continue;
799 if (!ap_strcasecmp_match(host, name[i]))
807 /* Suppose a request came in on the same socket as this r, and included
808 * a header "Host: host:port", would it map to r->server? It's more
809 * than just that though. When we do the normal matches for each request
810 * we don't even bother considering Host: etc on non-namevirtualhosts,
811 * we just call it a match. But here we require the host:port to match
812 * the ServerName and/or ServerAliases.
814 AP_DECLARE(int) ap_matches_request_vhost(request_rec *r, const char *host,
818 server_addr_rec *sar;
822 /* search all the <VirtualHost> values */
823 /* XXX: If this is a NameVirtualHost then we may not be doing the Right Thing
826 * NameVirtualHost 10.1.1.1
827 * <VirtualHost 10.1.1.1>
830 * <VirtualHost 10.1.1.1>
834 * Suppose r->server is v2, and we're asked to match "10.1.1.1". We'll say
835 * "yup it's v2", when really it isn't... if a request came in for 10.1.1.1
836 * it would really go to v1.
838 for (sar = s->addrs; sar; sar = sar->next) {
839 if ((sar->host_port == 0 || port == sar->host_port)
840 && !strcasecmp(host, sar->virthost)) {
845 /* the Port has to match now, because the rest don't have ports associated
847 if (port != s->port) {
851 return matches_aliases(s, host);
855 static void check_hostalias(request_rec *r)
858 * Even if the request has a Host: header containing a port we ignore
859 * that port. We always use the physical port of the socket. There
860 * are a few reasons for this:
862 * - the default of 80 or 443 for SSL is easier to handle this way
863 * - there is less of a possibility of a security problem
864 * - it simplifies the data structure
865 * - the client may have no idea that a proxy somewhere along the way
866 * translated the request to another ip:port
867 * - except for the addresses from the VirtualHost line, none of the other
868 * names we'll match have ports associated with them
870 const char *host = r->hostname;
878 port = r->connection->local_addr->port;
880 /* Recall that the name_chain is a list of server_addr_recs, some of
881 * whose ports may not match. Also each server may appear more than
882 * once in the chain -- specifically, it will appear once for each
883 * address from its VirtualHost line which matched. We only want to
884 * do the full ServerName/ServerAlias comparisons once for each
885 * server, fortunately we know that all the VirtualHost addresses for
886 * a single server are adjacent to each other.
889 for (src = r->connection->vhost_lookup_data; src; src = src->next) {
890 server_addr_rec *sar;
892 /* We only consider addresses on the name_chain which have a matching
896 if (sar->host_port != 0 && port != sar->host_port) {
902 /* does it match the virthost from the sar? */
903 if (!strcasecmp(host, sar->virthost)) {
908 /* we've already done ServerName and ServerAlias checks for this
915 if (matches_aliases(s, host)) {
922 /* s is the first matching server, we're done */
927 static void check_serverpath(request_rec *r)
934 port = r->connection->local_addr->port;
937 * This is in conjunction with the ServerPath code in http_core, so we
938 * get the right host attached to a non- Host-sending request.
940 * See the comment in check_hostalias about how each vhost can be
941 * listed multiple times.
945 for (src = r->connection->vhost_lookup_data; src; src = src->next) {
946 /* We only consider addresses on the name_chain which have a matching
949 if (src->sar->host_port != 0 && port != src->sar->host_port) {
959 if (s->path && !strncmp(r->uri, s->path, s->pathlen) &&
960 (s->path[s->pathlen - 1] == '/' ||
961 r->uri[s->pathlen] == '/' ||
962 r->uri[s->pathlen] == '\0')) {
970 AP_DECLARE(void) ap_update_vhost_from_headers(request_rec *r)
972 /* must set this for HTTP/1.1 support */
973 if (r->hostname || (r->hostname = apr_table_get(r->headers_in, "Host"))) {
975 if (r->status != HTTP_OK)
978 /* check if we tucked away a name_chain */
979 if (r->connection->vhost_lookup_data) {
988 * For every virtual host on this connection, call func_cb.
990 AP_DECLARE(int) ap_vhost_iterate_given_conn(conn_rec *conn,
991 ap_vhost_iterate_conn_cb func_cb,
1000 if (conn->vhost_lookup_data) {
1002 port = conn->local_addr->port;
1004 for (src = conn->vhost_lookup_data; src; src = src->next) {
1005 server_addr_rec *sar;
1007 /* We only consider addresses on the name_chain which have a
1011 if (sar->host_port != 0 && port != sar->host_port) {
1018 /* we've already done a callback for this vhost. */
1024 rv = func_cb(baton, conn, s);
1032 rv = func_cb(baton, conn, conn->base_server);
1038 /* Called for a new connection which has a known local_addr. Note that the
1039 * new connection is assumed to have conn->server == main server.
1041 AP_DECLARE(void) ap_update_vhost_given_ip(conn_rec *conn)
1046 /* scan the hash table for an exact match first */
1047 trav = find_ipaddr(conn->local_addr);
1050 /* save the name_chain for later in case this is a name-vhost */
1051 conn->vhost_lookup_data = trav->names;
1052 conn->base_server = trav->server;
1056 /* maybe there's a default server or wildcard name-based vhost
1057 * matching this port
1059 port = conn->local_addr->port;
1061 trav = find_default_server(port);
1063 conn->vhost_lookup_data = trav->names;
1064 conn->base_server = trav->server;
1068 /* otherwise we're stuck with just the main server
1069 * and no name-based vhosts
1071 conn->vhost_lookup_data = NULL;