1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2009 Index Data
4 Pazpar2 is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 typedef int socklen_t;
31 #include <sys/socket.h>
34 #include <sys/types.h>
36 #include <yaz/snprintf.h>
54 #include <netinet/in.h>
58 #include <arpa/inet.h>
61 #include <yaz/yaz-util.h>
62 #include <yaz/comstack.h>
70 #define MAX_HTTP_HEADER 4096
72 static void proxy_io(IOCHAN i, int event);
73 static struct http_channel *http_create(const char *addr,
74 struct conf_server *server);
75 static void http_destroy(IOCHAN i);
77 static struct http_buf *http_buf_freelist = 0; /* thread pr */
78 static struct http_channel *http_channel_freelist = 0; /* thread pr */
80 struct http_channel_observer_s {
83 http_channel_destroy_t destroy;
84 struct http_channel_observer_s *next;
85 struct http_channel *chan;
89 static const char *http_lookup_header(struct http_header *header,
92 for (; header; header = header->next)
93 if (!strcasecmp(name, header->name))
98 static struct http_buf *http_buf_create(void)
102 if (http_buf_freelist)
104 r = http_buf_freelist;
105 http_buf_freelist = http_buf_freelist->next;
108 r = xmalloc(sizeof(struct http_buf));
115 static void http_buf_destroy(struct http_buf *b)
117 b->next = http_buf_freelist;
118 http_buf_freelist = b;
121 static void http_buf_destroy_queue(struct http_buf *b)
132 static struct http_buf *http_buf_bybuf(char *b, int len)
134 struct http_buf *res = 0;
135 struct http_buf **p = &res;
140 if (tocopy > HTTP_BUF_SIZE)
141 tocopy = HTTP_BUF_SIZE;
142 *p = http_buf_create();
143 memcpy((*p)->buf, b, tocopy);
152 // Add a (chain of) buffers to the end of an existing queue.
153 static void http_buf_enqueue(struct http_buf **queue, struct http_buf *b)
156 queue = &(*queue)->next;
160 static struct http_buf *http_buf_bywrbuf(WRBUF wrbuf)
162 // Heavens to Betsy (buf)!
163 return http_buf_bybuf(wrbuf_buf(wrbuf), wrbuf_len(wrbuf));
166 // Non-destructively collapse chain of buffers into a string (max *len)
168 static void http_buf_peek(struct http_buf *b, char *buf, int len)
171 while (b && rd < len)
173 int toread = len - rd;
176 memcpy(buf + rd, b->buf + b->offset, toread);
183 static int http_buf_size(struct http_buf *b)
186 for (; b; b = b->next)
191 // Ddestructively munch up to len from head of queue.
192 static int http_buf_read(struct http_buf **b, char *buf, int len)
195 while ((*b) && rd < len)
197 int toread = len - rd;
198 if (toread > (*b)->len)
200 memcpy(buf + rd, (*b)->buf + (*b)->offset, toread);
202 if (toread < (*b)->len)
205 (*b)->offset += toread;
210 struct http_buf *n = (*b)->next;
211 http_buf_destroy(*b);
219 // Buffers may overlap.
220 static void urldecode(char *i, char *o)
229 else if (*i == '%' && i[1] && i[2])
233 sscanf(i, "%2x", &v);
243 // Warning: Buffers may not overlap
244 void urlencode(const char *i, char *o)
248 if (strchr(" /:", *i))
250 sprintf(o, "%%%.2X", (int) *i);
260 void http_addheader(struct http_response *r, const char *name, const char *value)
262 struct http_channel *c = r->channel;
263 struct http_header *h = nmem_malloc(c->nmem, sizeof *h);
264 h->name = nmem_strdup(c->nmem, name);
265 h->value = nmem_strdup(c->nmem, value);
266 h->next = r->headers;
270 const char *http_argbyname(struct http_request *r, const char *name)
272 struct http_argument *p;
275 for (p = r->arguments; p; p = p->next)
276 if (!strcmp(p->name, name))
281 const char *http_headerbyname(struct http_header *h, const char *name)
283 for (; h; h = h->next)
284 if (!strcmp(h->name, name))
289 struct http_response *http_create_response(struct http_channel *c)
291 struct http_response *r = nmem_malloc(c->nmem, sizeof(*r));
292 strcpy(r->code, "200");
297 r->content_type = "text/xml";
302 static const char *next_crlf(const char *cp, size_t *skipped)
304 const char *next_cp = strchr(cp, '\n');
307 if (next_cp > cp && next_cp[-1] == '\r')
308 *skipped = next_cp - cp - 1;
310 *skipped = next_cp - cp;
316 // Check if buf contains a package (minus payload)
317 static int package_check(const char *buf, int sz)
325 const char *b = next_crlf(buf, &skipped);
329 // we did not find CRLF.. See if buffer is too large..
330 if (sz >= MAX_HTTP_HEADER-1)
331 return MAX_HTTP_HEADER-1; // yes. Return that (will fail later)
337 // CRLF CRLF , i.e. end of header
338 if (len + content_len <= sz)
339 return len + content_len;
343 // following first skip of \r\n so that we don't consider Method
344 if (!strncasecmp(buf, "Content-Length:", 15))
346 const char *cp = buf+15;
350 while (*cp && isdigit(*(const unsigned char *)cp))
351 content_len = content_len*10 + (*cp++ - '0');
352 if (content_len < 0) /* prevent negative offsets */
356 return 0; // incomplete request
359 // Check if we have a request. Return 0 or length
360 static int request_check(struct http_buf *queue)
362 char tmp[MAX_HTTP_HEADER];
364 // only peek at the header..
365 http_buf_peek(queue, tmp, MAX_HTTP_HEADER-1);
366 // still we only return non-zero if the complete request is received..
367 return package_check(tmp, http_buf_size(queue));
370 struct http_response *http_parse_response_buf(struct http_channel *c, const char *buf, int len)
372 char tmp[MAX_HTTP_HEADER];
373 struct http_response *r = http_create_response(c);
375 struct http_header **hp = &r->headers;
377 if (len >= MAX_HTTP_HEADER)
379 memcpy(tmp, buf, len);
380 for (p = tmp; *p && *p != ' '; p++) // Skip HTTP version
384 for (p2 = p; *p2 && *p2 != ' ' && p2 - p < 3; p2++)
385 r->code[p2 - p] = *p2;
386 if (!(p = strstr(tmp, "\r\n")))
391 if (!(p2 = strstr(p, "\r\n")))
393 if (p == p2) // End of headers
397 struct http_header *h = *hp = nmem_malloc(c->nmem, sizeof(*h));
398 char *value = strchr(p, ':');
402 h->name = nmem_strdup(c->nmem, p);
403 while (isspace(*(const unsigned char *) value))
405 if (value >= p2) // Empty header;
412 h->value = nmem_strdup(c->nmem, value);
421 static int http_parse_arguments(struct http_request *r, NMEM nmem,
424 const char *p2 = args;
428 struct http_argument *a;
429 const char *equal = strchr(p2, '=');
430 const char *eoa = strchr(p2, '&');
433 yaz_log(YLOG_WARN, "Expected '=' in argument");
437 eoa = equal + strlen(equal); // last argument
438 else if (equal > eoa)
440 yaz_log(YLOG_WARN, "Missing '&' in argument");
443 a = nmem_malloc(nmem, sizeof(struct http_argument));
444 a->name = nmem_strdupn(nmem, p2, equal - p2);
445 a->value = nmem_strdupn(nmem, equal+1, eoa - equal - 1);
446 urldecode(a->name, a->name);
447 urldecode(a->value, a->value);
448 a->next = r->arguments;
457 struct http_request *http_parse_request(struct http_channel *c,
458 struct http_buf **queue,
461 struct http_request *r = nmem_malloc(c->nmem, sizeof(*r));
463 char *start = nmem_malloc(c->nmem, len+1);
466 if (http_buf_read(queue, buf, len) < len)
468 yaz_log(YLOG_WARN, "http_buf_read < len (%d)", len);
478 for (p = buf, p2 = r->method; *p && *p != ' ' && p - buf < 19; p++)
482 yaz_log(YLOG_WARN, "Unexpected HTTP method in request");
487 if (!(buf = strchr(buf, ' ')))
489 yaz_log(YLOG_WARN, "Missing Request-URI in HTTP request");
493 if (!(p = strchr(buf, ' ')))
495 yaz_log(YLOG_WARN, "HTTP Request-URI not terminated (too long?)");
499 if ((p2 = strchr(buf, '?'))) // Do we have arguments?
501 r->path = nmem_strdup(c->nmem, buf);
504 r->search = nmem_strdup(c->nmem, p2);
506 http_parse_arguments(r, c->nmem, p2);
510 if (strncmp(buf, "HTTP/", 5))
511 strcpy(r->http_version, "1.0");
515 buf += 5; // strlen("HTTP/")
517 p = (char*) next_crlf(buf, &skipped);
518 if (!p || skipped < 3 || skipped > 5)
521 memcpy(r->http_version, buf, skipped);
522 r->http_version[skipped] = '\0';
525 strcpy(c->version, r->http_version);
532 p = (char *) next_crlf(buf, &skipped);
537 else if (skipped == 0)
545 char *n_v = nmem_malloc(c->nmem, skipped+1);
546 struct http_header *h = nmem_malloc(c->nmem, sizeof(*h));
548 memcpy(n_v, buf, skipped);
551 if (!(cp = strchr(n_v, ':')))
553 h->name = nmem_strdupn(c->nmem, n_v, cp - n_v);
557 h->value = nmem_strdup(c->nmem, cp);
558 h->next = r->headers;
564 // determine if we do keep alive
565 if (!strcmp(c->version, "1.0"))
567 const char *v = http_lookup_header(r->headers, "Connection");
568 if (v && !strcmp(v, "Keep-Alive"))
575 const char *v = http_lookup_header(r->headers, "Connection");
576 if (v && !strcmp(v, "close"))
581 if (buf < start + len)
583 const char *content_type = http_lookup_header(r->headers,
585 r->content_len = start + len - buf;
586 r->content_buf = buf;
588 if (!yaz_strcmp_del("application/x-www-form-urlencoded",
591 http_parse_arguments(r, c->nmem, r->content_buf);
597 static struct http_buf *http_serialize_response(struct http_channel *c,
598 struct http_response *r)
600 struct http_header *h;
602 wrbuf_rewind(c->wrbuf);
603 wrbuf_printf(c->wrbuf, "HTTP/%s %s %s\r\n", c->version, r->code, r->msg);
604 for (h = r->headers; h; h = h->next)
605 wrbuf_printf(c->wrbuf, "%s: %s\r\n", h->name, h->value);
608 wrbuf_printf(c->wrbuf, "Content-Length: %d\r\n", r->payload ?
609 (int) strlen(r->payload) : 0);
610 wrbuf_printf(c->wrbuf, "Content-Type: %s\r\n", r->content_type);
611 if (!strcmp(r->content_type, "text/xml"))
613 xmlDoc *doc = xmlParseMemory(r->payload, strlen(r->payload));
620 yaz_log(YLOG_WARN, "Sending non-wellformed "
621 "response (bug #1162");
622 yaz_log(YLOG_WARN, "payload: %s", r->payload);
626 wrbuf_puts(c->wrbuf, "\r\n");
629 wrbuf_puts(c->wrbuf, r->payload);
631 return http_buf_bywrbuf(c->wrbuf);
634 // Serialize a HTTP request
635 static struct http_buf *http_serialize_request(struct http_request *r)
637 struct http_channel *c = r->channel;
638 struct http_header *h;
640 wrbuf_rewind(c->wrbuf);
641 wrbuf_printf(c->wrbuf, "%s %s%s%s", r->method, r->path,
642 *r->search ? "?" : "", r->search);
644 wrbuf_printf(c->wrbuf, " HTTP/%s\r\n", r->http_version);
646 for (h = r->headers; h; h = h->next)
647 wrbuf_printf(c->wrbuf, "%s: %s\r\n", h->name, h->value);
649 wrbuf_puts(c->wrbuf, "\r\n");
652 wrbuf_write(c->wrbuf, r->content_buf, r->content_len);
655 yaz_log(YLOG_LOG, "WRITING TO PROXY:\n%s\n----",
656 wrbuf_cstr(c->wrbuf));
658 return http_buf_bywrbuf(c->wrbuf);
662 static int http_weshouldproxy(struct http_request *rq)
664 struct http_channel *c = rq->channel;
665 if (c->server->proxy_addr && !strstr(rq->path, "search.pz2"))
671 struct http_header * http_header_append(struct http_channel *ch,
672 struct http_header * hp,
676 struct http_header *hpnew = 0;
681 while (hp && hp->next)
684 if(name && strlen(name)&& value && strlen(value)){
685 hpnew = nmem_malloc(ch->nmem, sizeof *hpnew);
686 hpnew->name = nmem_strdup(ch->nmem, name);
687 hpnew->value = nmem_strdup(ch->nmem, value);
700 static int is_inprogress(void)
703 if (WSAGetLastError() == WSAEWOULDBLOCK)
706 if (errno == EINPROGRESS)
712 static void enable_nonblock(int sock)
716 flags = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
717 if (ioctlsocket(sock, FIONBIO, &flags) < 0)
718 yaz_log(YLOG_FATAL|YLOG_ERRNO, "ioctlsocket");
720 if ((flags = fcntl(sock, F_GETFL, 0)) < 0)
721 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fcntl");
722 if (fcntl(sock, F_SETFL, flags | O_NONBLOCK) < 0)
723 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fcntl2");
727 static int http_proxy(struct http_request *rq)
729 struct http_channel *c = rq->channel;
730 struct http_proxy *p = c->proxy;
731 struct http_header *hp;
732 struct http_buf *requestbuf;
733 char server_port[16] = "";
734 struct conf_server *ser = c->server;
736 if (!p) // This is a new connection. Create a proxy channel
742 if (!(pe = getprotobyname("tcp"))) {
745 if ((sock = socket(PF_INET, SOCK_STREAM, pe->p_proto)) < 0)
747 yaz_log(YLOG_WARN|YLOG_ERRNO, "socket");
750 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)
751 &one, sizeof(one)) < 0)
753 enable_nonblock(sock);
754 if (connect(sock, (struct sockaddr *) c->server->proxy_addr,
755 sizeof(*c->server->proxy_addr)) < 0)
757 if (!is_inprogress())
759 yaz_log(YLOG_WARN|YLOG_ERRNO, "Proxy connect");
763 p = xmalloc(sizeof(struct http_proxy));
766 p->first_response = 1;
768 // We will add EVENT_OUTPUT below
769 p->iochan = iochan_create(sock, proxy_io, EVENT_INPUT);
770 iochan_setdata(p->iochan, p);
771 pazpar2_add_channel(p->iochan);
774 // Do _not_ modify Host: header, just checking it's existence
776 if (!http_lookup_header(rq->headers, "Host"))
778 yaz_log(YLOG_WARN, "Failed to find Host header in proxy");
782 // Add new header about paraz2 version, host, remote client address, etc.
784 char server_via[128];
787 hp = http_header_append(c, hp,
788 "X-Pazpar2-Version", PACKAGE_VERSION);
789 hp = http_header_append(c, hp,
790 "X-Pazpar2-Server-Host", ser->host);
791 sprintf(server_port, "%d", ser->port);
792 hp = http_header_append(c, hp,
793 "X-Pazpar2-Server-Port", server_port);
794 yaz_snprintf(server_via, sizeof(server_via),
796 ser->host ? ser->host : "@",
797 server_port, PACKAGE_NAME, PACKAGE_VERSION);
798 hp = http_header_append(c, hp, "Via" , server_via);
799 hp = http_header_append(c, hp, "X-Forwarded-For", c->addr);
802 requestbuf = http_serialize_request(rq);
804 http_buf_enqueue(&p->oqueue, requestbuf);
805 iochan_setflag(p->iochan, EVENT_OUTPUT);
809 void http_send_response(struct http_channel *ch)
811 struct http_response *rs = ch->response;
815 hb = http_serialize_response(ch, rs);
818 yaz_log(YLOG_WARN, "Failed to serialize HTTP response");
819 http_destroy(ch->iochan);
823 http_buf_enqueue(&ch->oqueue, hb);
824 iochan_setflag(ch->iochan, EVENT_OUTPUT);
825 ch->state = Http_Idle;
829 static void http_error(struct http_channel *hc, int no, const char *msg)
831 struct http_response *rs = http_create_response(hc);
834 hc->keep_alive = 0; // not keeping this HTTP session alive
836 sprintf(rs->code, "%d", no);
838 rs->msg = nmem_strdup(hc->nmem, msg);
839 rs->payload = nmem_malloc(hc->nmem, 100);
840 yaz_snprintf(rs->payload, 99, "<error>HTTP Error %d: %s</error>\n",
842 http_send_response(hc);
845 static void http_io(IOCHAN i, int event)
847 struct http_channel *hc = iochan_getdata(i);
852 struct http_buf *htbuf;
855 htbuf = http_buf_create();
856 res = recv(iochan_getfd(i), htbuf->buf, HTTP_BUF_SIZE -1, 0);
857 if (res == -1 && errno == EAGAIN)
859 http_buf_destroy(htbuf);
864 http_buf_destroy(htbuf);
868 htbuf->buf[res] = '\0';
870 http_buf_enqueue(&hc->iqueue, htbuf);
874 if (hc->state == Http_Busy)
876 reqlen = request_check(hc->iqueue);
879 // we have a complete HTTP request
880 nmem_reset(hc->nmem);
881 if (!(hc->request = http_parse_request(hc, &hc->iqueue, reqlen)))
883 yaz_log(YLOG_WARN, "Failed to parse request");
884 http_error(hc, 400, "Bad Request");
888 yaz_log(YLOG_LOG, "Request: %s %s%s%s", hc->request->method,
890 *hc->request->search ? "?" : "",
891 hc->request->search);
892 if (hc->request->content_buf)
893 yaz_log(YLOG_LOG, "%s", hc->request->content_buf);
894 if (http_weshouldproxy(hc->request))
895 http_proxy(hc->request);
898 // Execute our business logic!
899 hc->state = Http_Busy;
907 struct http_buf *wb = hc->oqueue;
908 res = send(iochan_getfd(hc->iochan), wb->buf + wb->offset, wb->len, 0);
911 yaz_log(YLOG_WARN|YLOG_ERRNO, "write");
917 hc->oqueue = hc->oqueue->next;
918 http_buf_destroy(wb);
933 iochan_clearflag(i, EVENT_OUTPUT);
935 iochan_setevent(hc->iochan, EVENT_INPUT);
940 if (!hc->oqueue && hc->proxy && !hc->proxy->iochan)
941 http_destroy(i); // Server closed; we're done
944 yaz_log(YLOG_WARN, "Unexpected event on connection");
949 // Handles I/O on a client connection to a backend web server (proxy mode)
950 static void proxy_io(IOCHAN pi, int event)
952 struct http_proxy *pc = iochan_getdata(pi);
953 struct http_channel *hc = pc->channel;
958 struct http_buf *htbuf;
961 htbuf = http_buf_create();
962 res = recv(iochan_getfd(pi), htbuf->buf, HTTP_BUF_SIZE -1, 0);
963 if (res == 0 || (res < 0 && !is_inprogress()))
967 yaz_log(YLOG_WARN, "Proxy read came up short");
968 // Close channel and alert client HTTP channel that we're gone
969 http_buf_destroy(htbuf);
971 closesocket(iochan_getfd(pi));
973 close(iochan_getfd(pi));
980 http_destroy(hc->iochan);
986 htbuf->buf[res] = '\0';
989 // Write any remaining payload
990 if (htbuf->len - htbuf->offset > 0)
991 http_buf_enqueue(&hc->oqueue, htbuf);
993 iochan_setflag(hc->iochan, EVENT_OUTPUT);
996 if (!(htbuf = pc->oqueue))
998 iochan_clearflag(pi, EVENT_OUTPUT);
1001 res = send(iochan_getfd(pi), htbuf->buf + htbuf->offset, htbuf->len, 0);
1004 yaz_log(YLOG_WARN|YLOG_ERRNO, "write");
1005 http_destroy(hc->iochan);
1008 if (res == htbuf->len)
1010 struct http_buf *np = htbuf->next;
1011 http_buf_destroy(htbuf);
1017 htbuf->offset += res;
1021 iochan_setflags(pi, EVENT_INPUT); // Turns off output flag
1025 yaz_log(YLOG_WARN, "Unexpected event on connection");
1026 http_destroy(hc->iochan);
1030 static void http_fire_observers(struct http_channel *c);
1031 static void http_destroy_observers(struct http_channel *c);
1034 static void http_destroy(IOCHAN i)
1036 struct http_channel *s = iochan_getdata(i);
1040 if (s->proxy->iochan)
1043 closesocket(iochan_getfd(s->proxy->iochan));
1045 close(iochan_getfd(s->proxy->iochan));
1047 iochan_destroy(s->proxy->iochan);
1049 http_buf_destroy_queue(s->proxy->oqueue);
1052 http_buf_destroy_queue(s->iqueue);
1053 http_buf_destroy_queue(s->oqueue);
1054 http_fire_observers(s);
1055 http_destroy_observers(s);
1056 s->next = http_channel_freelist;
1057 http_channel_freelist = s;
1059 closesocket(iochan_getfd(i));
1061 close(iochan_getfd(i));
1066 static struct http_channel *http_create(const char *addr,
1067 struct conf_server *server)
1069 struct http_channel *r = http_channel_freelist;
1073 http_channel_freelist = r->next;
1074 nmem_reset(r->nmem);
1075 wrbuf_rewind(r->wrbuf);
1079 r = xmalloc(sizeof(struct http_channel));
1080 r->nmem = nmem_create();
1081 r->wrbuf = wrbuf_alloc();
1086 r->iqueue = r->oqueue = 0;
1087 r->state = Http_Idle;
1093 yaz_log(YLOG_WARN, "Invalid HTTP forward address");
1096 strcpy(r->addr, addr);
1102 /* Accept a new command connection */
1103 static void http_accept(IOCHAN i, int event)
1105 struct sockaddr_in addr;
1106 int fd = iochan_getfd(i);
1110 struct http_channel *ch;
1111 struct conf_server *server = iochan_getdata(i);
1114 if ((s = accept(fd, (struct sockaddr *) &addr, &len)) < 0)
1116 yaz_log(YLOG_WARN|YLOG_ERRNO, "accept");
1121 yaz_log(YLOG_DEBUG, "New command connection");
1122 c = iochan_create(s, http_io, EVENT_INPUT | EVENT_EXCEPT);
1124 ch = http_create(inet_ntoa(addr.sin_addr), server);
1126 iochan_setdata(c, ch);
1128 pazpar2_add_channel(c);
1131 /* Create a http-channel listener, syntax [host:]port */
1132 int http_init(const char *addr, struct conf_server *server)
1137 struct sockaddr_in myaddr;
1142 yaz_log(YLOG_LOG, "HTTP listener %s", addr);
1144 memset(&myaddr, 0, sizeof myaddr);
1145 myaddr.sin_family = AF_INET;
1146 pp = strchr(addr, ':');
1149 WRBUF w = wrbuf_alloc();
1152 wrbuf_write(w, addr, pp - addr);
1155 he = gethostbyname(wrbuf_cstr(w));
1159 yaz_log(YLOG_FATAL, "Unable to resolve '%s'", addr);
1162 memcpy(&myaddr.sin_addr.s_addr, he->h_addr_list[0], he->h_length);
1163 port = atoi(pp + 1);
1168 myaddr.sin_addr.s_addr = INADDR_ANY;
1171 myaddr.sin_port = htons(port);
1173 if (!(p = getprotobyname("tcp"))) {
1176 if ((l = socket(PF_INET, SOCK_STREAM, p->p_proto)) < 0)
1177 yaz_log(YLOG_FATAL|YLOG_ERRNO, "socket");
1178 if (setsockopt(l, SOL_SOCKET, SO_REUSEADDR, (char*)
1179 &one, sizeof(one)) < 0)
1182 if (bind(l, (struct sockaddr *) &myaddr, sizeof myaddr) < 0)
1184 yaz_log(YLOG_FATAL|YLOG_ERRNO, "bind");
1187 if (listen(l, SOMAXCONN) < 0)
1189 yaz_log(YLOG_FATAL|YLOG_ERRNO, "listen");
1193 server->listener_socket = l;
1195 c = iochan_create(l, http_accept, EVENT_INPUT | EVENT_EXCEPT);
1196 iochan_setdata(c, server);
1197 pazpar2_add_channel(c);
1201 void http_close_server(struct conf_server *server)
1203 /* break the event_loop (select) by closing down the HTTP listener sock */
1204 if (server->listener_socket)
1207 closesocket(server->listener_socket);
1209 close(server->listener_socket);
1214 void http_set_proxyaddr(const char *host, struct conf_server *server)
1219 WRBUF w = wrbuf_alloc();
1221 yaz_log(YLOG_LOG, "HTTP backend %s", host);
1223 p = strchr(host, ':');
1227 wrbuf_write(w, host, p - host);
1233 wrbuf_puts(w, host);
1235 if (!(he = gethostbyname(wrbuf_cstr(w))))
1237 fprintf(stderr, "Failed to lookup '%s'\n", wrbuf_cstr(w));
1242 server->proxy_addr = xmalloc(sizeof(struct sockaddr_in));
1243 server->proxy_addr->sin_family = he->h_addrtype;
1244 memcpy(&server->proxy_addr->sin_addr.s_addr, he->h_addr_list[0], he->h_length);
1245 server->proxy_addr->sin_port = htons(port);
1248 static void http_fire_observers(struct http_channel *c)
1250 http_channel_observer_t p = c->observers;
1253 p->destroy(p->data, c, p->data2);
1258 static void http_destroy_observers(struct http_channel *c)
1260 while (c->observers)
1262 http_channel_observer_t obs = c->observers;
1263 c->observers = obs->next;
1268 http_channel_observer_t http_add_observer(struct http_channel *c, void *data,
1269 http_channel_destroy_t des)
1271 http_channel_observer_t obs = xmalloc(sizeof(*obs));
1276 obs->next = c->observers;
1281 void http_remove_observer(http_channel_observer_t obs)
1283 struct http_channel *c = obs->chan;
1284 http_channel_observer_t found, *p = &c->observers;
1293 struct http_channel *http_channel_observer_chan(http_channel_observer_t obs)
1298 void http_observer_set_data2(http_channel_observer_t obs, void *data2)
1307 * c-file-style: "Stroustrup"
1308 * indent-tabs-mode: nil
1310 * vim: shiftwidth=4 tabstop=8 expandtab