1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2010 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>
64 #include <yaz/mutex.h>
69 #define MAX_HTTP_HEADER 4096
72 #define strncasecmp _strnicmp
73 #define strcasecmp _stricmp
78 #define HTTP_BUF_SIZE 4096
82 struct http_buf *next;
86 static void proxy_io(IOCHAN i, int event);
87 static struct http_channel *http_channel_create(http_server_t http_server,
89 struct conf_server *server);
90 static void http_channel_destroy(IOCHAN i);
91 static http_server_t http_server_create(void);
92 static void http_server_incref(http_server_t hs);
96 struct http_buf *http_buf_freelist;
97 struct http_channel *http_channel_freelist;
101 http_sessions_t http_sessions;
102 struct sockaddr_in *proxy_addr;
105 struct http_channel_observer_s {
108 http_channel_destroy_t destroy;
109 struct http_channel_observer_s *next;
110 struct http_channel *chan;
114 const char *http_lookup_header(struct http_header *header,
117 for (; header; header = header->next)
118 if (!strcasecmp(name, header->name))
119 return header->value;
123 static struct http_buf *http_buf_create(http_server_t hs)
125 struct http_buf *r = 0;
127 yaz_mutex_enter(hs->mutex);
128 if (hs->http_buf_freelist)
130 r = hs->http_buf_freelist;
131 hs->http_buf_freelist = hs->http_buf_freelist->next;
133 yaz_mutex_leave(hs->mutex);
135 r = xmalloc(sizeof(struct http_buf));
142 static void http_buf_destroy(http_server_t hs, struct http_buf *b)
144 yaz_mutex_enter(hs->mutex);
145 b->next = hs->http_buf_freelist;
146 hs->http_buf_freelist = b;
147 yaz_mutex_leave(hs->mutex);
150 static void http_buf_destroy_queue(http_server_t hs, struct http_buf *b)
156 http_buf_destroy(hs, b);
161 static struct http_buf *http_buf_bybuf(http_server_t hs, char *b, int len)
163 struct http_buf *res = 0;
164 struct http_buf **p = &res;
169 if (tocopy > HTTP_BUF_SIZE)
170 tocopy = HTTP_BUF_SIZE;
171 *p = http_buf_create(hs);
172 memcpy((*p)->buf, b, tocopy);
181 // Add a (chain of) buffers to the end of an existing queue.
182 static void http_buf_enqueue(struct http_buf **queue, struct http_buf *b)
185 queue = &(*queue)->next;
189 static struct http_buf *http_buf_bywrbuf(http_server_t hs, WRBUF wrbuf)
191 // Heavens to Betsy (buf)!
192 return http_buf_bybuf(hs, wrbuf_buf(wrbuf), wrbuf_len(wrbuf));
195 // Non-destructively collapse chain of buffers into a string (max *len)
197 static void http_buf_peek(struct http_buf *b, char *buf, int len)
200 while (b && rd < len)
202 int toread = len - rd;
205 memcpy(buf + rd, b->buf + b->offset, toread);
212 static int http_buf_size(struct http_buf *b)
215 for (; b; b = b->next)
220 // Ddestructively munch up to len from head of queue.
221 static int http_buf_read(http_server_t hs,
222 struct http_buf **b, char *buf, int len)
225 while ((*b) && rd < len)
227 int toread = len - rd;
228 if (toread > (*b)->len)
230 memcpy(buf + rd, (*b)->buf + (*b)->offset, toread);
232 if (toread < (*b)->len)
235 (*b)->offset += toread;
240 struct http_buf *n = (*b)->next;
241 http_buf_destroy(hs, *b);
249 // Buffers may overlap.
250 static void urldecode(char *i, char *o)
259 else if (*i == '%' && i[1] && i[2])
263 sscanf(i, "%2x", &v);
273 // Warning: Buffers may not overlap
274 void urlencode(const char *i, char *o)
278 if (strchr(" /:", *i))
280 sprintf(o, "%%%.2X", (int) *i);
290 void http_addheader(struct http_response *r, const char *name, const char *value)
292 struct http_channel *c = r->channel;
293 struct http_header *h = nmem_malloc(c->nmem, sizeof *h);
294 h->name = nmem_strdup(c->nmem, name);
295 h->value = nmem_strdup(c->nmem, value);
296 h->next = r->headers;
300 const char *http_argbyname(struct http_request *r, const char *name)
302 struct http_argument *p;
305 for (p = r->arguments; p; p = p->next)
306 if (!strcmp(p->name, name))
311 const char *http_headerbyname(struct http_header *h, const char *name)
313 for (; h; h = h->next)
314 if (!strcmp(h->name, name))
319 struct http_response *http_create_response(struct http_channel *c)
321 struct http_response *r = nmem_malloc(c->nmem, sizeof(*r));
322 strcpy(r->code, "200");
327 r->content_type = "text/xml";
332 static const char *next_crlf(const char *cp, size_t *skipped)
334 const char *next_cp = strchr(cp, '\n');
337 if (next_cp > cp && next_cp[-1] == '\r')
338 *skipped = next_cp - cp - 1;
340 *skipped = next_cp - cp;
346 // Check if buf contains a package (minus payload)
347 static int package_check(const char *buf, int sz)
355 const char *b = next_crlf(buf, &skipped);
359 // we did not find CRLF.. See if buffer is too large..
360 if (sz >= MAX_HTTP_HEADER-1)
361 return MAX_HTTP_HEADER-1; // yes. Return that (will fail later)
367 // CRLF CRLF , i.e. end of header
368 if (len + content_len <= sz)
369 return len + content_len;
373 // following first skip of \r\n so that we don't consider Method
374 if (!strncasecmp(buf, "Content-Length:", 15))
376 const char *cp = buf+15;
380 while (*cp && isdigit(*(const unsigned char *)cp))
381 content_len = content_len*10 + (*cp++ - '0');
382 if (content_len < 0) /* prevent negative offsets */
386 return 0; // incomplete request
389 // Check if we have a request. Return 0 or length
390 static int request_check(struct http_buf *queue)
392 char tmp[MAX_HTTP_HEADER];
394 // only peek at the header..
395 http_buf_peek(queue, tmp, MAX_HTTP_HEADER-1);
396 // still we only return non-zero if the complete request is received..
397 return package_check(tmp, http_buf_size(queue));
400 struct http_response *http_parse_response_buf(struct http_channel *c, const char *buf, int len)
402 char tmp[MAX_HTTP_HEADER];
403 struct http_response *r = http_create_response(c);
405 struct http_header **hp = &r->headers;
407 if (len >= MAX_HTTP_HEADER)
409 memcpy(tmp, buf, len);
410 for (p = tmp; *p && *p != ' '; p++) // Skip HTTP version
414 for (p2 = p; *p2 && *p2 != ' ' && p2 - p < 3; p2++)
415 r->code[p2 - p] = *p2;
416 if (!(p = strstr(tmp, "\r\n")))
421 if (!(p2 = strstr(p, "\r\n")))
423 if (p == p2) // End of headers
427 struct http_header *h = *hp = nmem_malloc(c->nmem, sizeof(*h));
428 char *value = strchr(p, ':');
432 h->name = nmem_strdup(c->nmem, p);
433 while (isspace(*(const unsigned char *) value))
435 if (value >= p2) // Empty header;
442 h->value = nmem_strdup(c->nmem, value);
451 static int http_parse_arguments(struct http_request *r, NMEM nmem,
454 const char *p2 = args;
458 struct http_argument *a;
459 const char *equal = strchr(p2, '=');
460 const char *eoa = strchr(p2, '&');
463 yaz_log(YLOG_WARN, "Expected '=' in argument");
467 eoa = equal + strlen(equal); // last argument
468 else if (equal > eoa)
470 yaz_log(YLOG_WARN, "Missing '&' in argument");
473 a = nmem_malloc(nmem, sizeof(struct http_argument));
474 a->name = nmem_strdupn(nmem, p2, equal - p2);
475 a->value = nmem_strdupn(nmem, equal+1, eoa - equal - 1);
476 urldecode(a->name, a->name);
477 urldecode(a->value, a->value);
478 a->next = r->arguments;
487 struct http_request *http_parse_request(struct http_channel *c,
488 struct http_buf **queue,
491 struct http_request *r = nmem_malloc(c->nmem, sizeof(*r));
493 char *start = nmem_malloc(c->nmem, len+1);
496 if (http_buf_read(c->http_server, queue, buf, len) < len)
498 yaz_log(YLOG_WARN, "http_buf_read < len (%d)", len);
508 for (p = buf, p2 = r->method; *p && *p != ' ' && p - buf < 19; p++)
512 yaz_log(YLOG_WARN, "Unexpected HTTP method in request");
517 if (!(buf = strchr(buf, ' ')))
519 yaz_log(YLOG_WARN, "Missing Request-URI in HTTP request");
523 if (!(p = strchr(buf, ' ')))
525 yaz_log(YLOG_WARN, "HTTP Request-URI not terminated (too long?)");
529 if ((p2 = strchr(buf, '?'))) // Do we have arguments?
531 r->path = nmem_strdup(c->nmem, buf);
534 r->search = nmem_strdup(c->nmem, p2);
536 http_parse_arguments(r, c->nmem, p2);
540 if (strncmp(buf, "HTTP/", 5))
541 strcpy(r->http_version, "1.0");
545 buf += 5; // strlen("HTTP/")
547 p = (char*) next_crlf(buf, &skipped);
548 if (!p || skipped < 3 || skipped > 5)
551 memcpy(r->http_version, buf, skipped);
552 r->http_version[skipped] = '\0';
555 strcpy(c->version, r->http_version);
562 p = (char *) next_crlf(buf, &skipped);
567 else if (skipped == 0)
575 char *n_v = nmem_malloc(c->nmem, skipped+1);
576 struct http_header *h = nmem_malloc(c->nmem, sizeof(*h));
578 memcpy(n_v, buf, skipped);
581 if (!(cp = strchr(n_v, ':')))
583 h->name = nmem_strdupn(c->nmem, n_v, cp - n_v);
587 h->value = nmem_strdup(c->nmem, cp);
588 h->next = r->headers;
594 // determine if we do keep alive
595 if (!strcmp(c->version, "1.0"))
597 const char *v = http_lookup_header(r->headers, "Connection");
598 if (v && !strcmp(v, "Keep-Alive"))
605 const char *v = http_lookup_header(r->headers, "Connection");
606 if (v && !strcmp(v, "close"))
611 if (buf < start + len)
613 const char *content_type = http_lookup_header(r->headers,
615 r->content_len = start + len - buf;
616 r->content_buf = buf;
618 if (!yaz_strcmp_del("application/x-www-form-urlencoded",
621 http_parse_arguments(r, c->nmem, r->content_buf);
627 static struct http_buf *http_serialize_response(struct http_channel *c,
628 struct http_response *r)
630 struct http_header *h;
632 wrbuf_rewind(c->wrbuf);
633 wrbuf_printf(c->wrbuf, "HTTP/%s %s %s\r\n", c->version, r->code, r->msg);
634 for (h = r->headers; h; h = h->next)
635 wrbuf_printf(c->wrbuf, "%s: %s\r\n", h->name, h->value);
638 wrbuf_printf(c->wrbuf, "Content-Length: %d\r\n", r->payload ?
639 (int) strlen(r->payload) : 0);
640 wrbuf_printf(c->wrbuf, "Content-Type: %s\r\n", r->content_type);
641 if (!strcmp(r->content_type, "text/xml"))
643 xmlDoc *doc = xmlParseMemory(r->payload, strlen(r->payload));
650 yaz_log(YLOG_WARN, "Sending non-wellformed "
651 "response (bug #1162");
652 yaz_log(YLOG_WARN, "payload: %s", r->payload);
656 wrbuf_puts(c->wrbuf, "\r\n");
659 wrbuf_puts(c->wrbuf, r->payload);
661 return http_buf_bywrbuf(c->http_server, c->wrbuf);
664 // Serialize a HTTP request
665 static struct http_buf *http_serialize_request(struct http_request *r)
667 struct http_channel *c = r->channel;
668 struct http_header *h;
670 wrbuf_rewind(c->wrbuf);
671 wrbuf_printf(c->wrbuf, "%s %s%s%s", r->method, r->path,
672 *r->search ? "?" : "", r->search);
674 wrbuf_printf(c->wrbuf, " HTTP/%s\r\n", r->http_version);
676 for (h = r->headers; h; h = h->next)
677 wrbuf_printf(c->wrbuf, "%s: %s\r\n", h->name, h->value);
679 wrbuf_puts(c->wrbuf, "\r\n");
682 wrbuf_write(c->wrbuf, r->content_buf, r->content_len);
685 yaz_log(YLOG_LOG, "WRITING TO PROXY:\n%s\n----",
686 wrbuf_cstr(c->wrbuf));
688 return http_buf_bywrbuf(c->http_server, c->wrbuf);
692 static int http_weshouldproxy(struct http_request *rq)
694 struct http_channel *c = rq->channel;
695 if (c->server->http_server->proxy_addr && !strstr(rq->path, "search.pz2"))
701 struct http_header * http_header_append(struct http_channel *ch,
702 struct http_header * hp,
706 struct http_header *hpnew = 0;
711 while (hp && hp->next)
714 if(name && strlen(name)&& value && strlen(value)){
715 hpnew = nmem_malloc(ch->nmem, sizeof *hpnew);
716 hpnew->name = nmem_strdup(ch->nmem, name);
717 hpnew->value = nmem_strdup(ch->nmem, value);
730 static int is_inprogress(void)
733 if (WSAGetLastError() == WSAEWOULDBLOCK)
736 if (errno == EINPROGRESS)
742 static void enable_nonblock(int sock)
746 flags = (flags & CS_FLAGS_BLOCKING) ? 0 : 1;
747 if (ioctlsocket(sock, FIONBIO, &flags) < 0)
748 yaz_log(YLOG_FATAL|YLOG_ERRNO, "ioctlsocket");
750 if ((flags = fcntl(sock, F_GETFL, 0)) < 0)
751 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fcntl");
752 if (fcntl(sock, F_SETFL, flags | O_NONBLOCK) < 0)
753 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fcntl2");
757 static int http_proxy(struct http_request *rq)
759 struct http_channel *c = rq->channel;
760 struct http_proxy *p = c->proxy;
761 struct http_header *hp;
762 struct http_buf *requestbuf;
763 char server_port[16] = "";
764 struct conf_server *ser = c->server;
766 if (!p) // This is a new connection. Create a proxy channel
772 if (!(pe = getprotobyname("tcp"))) {
775 if ((sock = socket(PF_INET, SOCK_STREAM, pe->p_proto)) < 0)
777 yaz_log(YLOG_WARN|YLOG_ERRNO, "socket");
780 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char*)
781 &one, sizeof(one)) < 0)
783 enable_nonblock(sock);
784 if (connect(sock, (struct sockaddr *)
785 c->server->http_server->proxy_addr,
786 sizeof(*c->server->http_server->proxy_addr)) < 0)
788 if (!is_inprogress())
790 yaz_log(YLOG_WARN|YLOG_ERRNO, "Proxy connect");
794 p = xmalloc(sizeof(struct http_proxy));
797 p->first_response = 1;
799 // We will add EVENT_OUTPUT below
800 p->iochan = iochan_create(sock, proxy_io, EVENT_INPUT);
801 iochan_setdata(p->iochan, p);
803 iochan_add(ser->iochan_man, p->iochan);
806 // Do _not_ modify Host: header, just checking it's existence
808 if (!http_lookup_header(rq->headers, "Host"))
810 yaz_log(YLOG_WARN, "Failed to find Host header in proxy");
814 // Add new header about paraz2 version, host, remote client address, etc.
816 char server_via[128];
819 hp = http_header_append(c, hp,
820 "X-Pazpar2-Version", PACKAGE_VERSION);
821 hp = http_header_append(c, hp,
822 "X-Pazpar2-Server-Host", ser->host);
823 sprintf(server_port, "%d", ser->port);
824 hp = http_header_append(c, hp,
825 "X-Pazpar2-Server-Port", server_port);
826 yaz_snprintf(server_via, sizeof(server_via),
828 ser->host ? ser->host : "@",
829 server_port, PACKAGE_NAME, PACKAGE_VERSION);
830 hp = http_header_append(c, hp, "Via" , server_via);
831 hp = http_header_append(c, hp, "X-Forwarded-For", c->addr);
834 requestbuf = http_serialize_request(rq);
836 http_buf_enqueue(&p->oqueue, requestbuf);
837 iochan_setflag(p->iochan, EVENT_OUTPUT);
841 void http_send_response(struct http_channel *ch)
843 struct http_response *rs = ch->response;
847 hb = http_serialize_response(ch, rs);
850 yaz_log(YLOG_WARN, "Failed to serialize HTTP response");
851 http_channel_destroy(ch->iochan);
855 http_buf_enqueue(&ch->oqueue, hb);
856 iochan_setflag(ch->iochan, EVENT_OUTPUT);
857 ch->state = Http_Idle;
861 static void http_error(struct http_channel *hc, int no, const char *msg)
863 struct http_response *rs = http_create_response(hc);
866 hc->keep_alive = 0; // not keeping this HTTP session alive
868 sprintf(rs->code, "%d", no);
870 rs->msg = nmem_strdup(hc->nmem, msg);
871 rs->payload = nmem_malloc(hc->nmem, 100);
872 yaz_snprintf(rs->payload, 99, "<error>HTTP Error %d: %s</error>\n",
874 http_send_response(hc);
877 static void http_io(IOCHAN i, int event)
879 struct http_channel *hc = iochan_getdata(i);
884 struct http_buf *htbuf;
887 htbuf = http_buf_create(hc->http_server);
888 res = recv(iochan_getfd(i), htbuf->buf, HTTP_BUF_SIZE -1, 0);
889 if (res == -1 && errno == EAGAIN)
891 http_buf_destroy(hc->http_server, htbuf);
896 http_buf_destroy(hc->http_server, htbuf);
897 http_channel_destroy(i);
900 htbuf->buf[res] = '\0';
902 http_buf_enqueue(&hc->iqueue, htbuf);
906 if (hc->state == Http_Busy)
908 reqlen = request_check(hc->iqueue);
911 // we have a complete HTTP request
912 nmem_reset(hc->nmem);
913 if (!(hc->request = http_parse_request(hc, &hc->iqueue, reqlen)))
915 yaz_log(YLOG_WARN, "Failed to parse request");
916 http_error(hc, 400, "Bad Request");
920 yaz_log(YLOG_LOG, "Request: %s %s%s%s", hc->request->method,
922 *hc->request->search ? "?" : "",
923 hc->request->search);
924 if (hc->request->content_buf)
925 yaz_log(YLOG_LOG, "%s", hc->request->content_buf);
926 if (http_weshouldproxy(hc->request))
927 http_proxy(hc->request);
930 // Execute our business logic!
931 hc->state = Http_Busy;
939 struct http_buf *wb = hc->oqueue;
940 res = send(iochan_getfd(hc->iochan), wb->buf + wb->offset, wb->len, 0);
943 yaz_log(YLOG_WARN|YLOG_ERRNO, "write");
944 http_channel_destroy(i);
949 hc->oqueue = hc->oqueue->next;
950 http_buf_destroy(hc->http_server, wb);
960 http_channel_destroy(i);
965 iochan_clearflag(i, EVENT_OUTPUT);
967 iochan_setevent(hc->iochan, EVENT_INPUT);
972 if (!hc->oqueue && hc->proxy && !hc->proxy->iochan)
973 http_channel_destroy(i); // Server closed; we're done
976 yaz_log(YLOG_WARN, "Unexpected event on connection");
977 http_channel_destroy(i);
981 // Handles I/O on a client connection to a backend web server (proxy mode)
982 static void proxy_io(IOCHAN pi, int event)
984 struct http_proxy *pc = iochan_getdata(pi);
985 struct http_channel *hc = pc->channel;
990 struct http_buf *htbuf;
993 htbuf = http_buf_create(hc->http_server);
994 res = recv(iochan_getfd(pi), htbuf->buf, HTTP_BUF_SIZE -1, 0);
995 if (res == 0 || (res < 0 && !is_inprogress()))
999 yaz_log(YLOG_WARN, "Proxy read came up short");
1000 // Close channel and alert client HTTP channel that we're gone
1001 http_buf_destroy(hc->http_server, htbuf);
1003 closesocket(iochan_getfd(pi));
1005 close(iochan_getfd(pi));
1012 http_channel_destroy(hc->iochan);
1018 htbuf->buf[res] = '\0';
1021 // Write any remaining payload
1022 if (htbuf->len - htbuf->offset > 0)
1023 http_buf_enqueue(&hc->oqueue, htbuf);
1025 iochan_setflag(hc->iochan, EVENT_OUTPUT);
1028 if (!(htbuf = pc->oqueue))
1030 iochan_clearflag(pi, EVENT_OUTPUT);
1033 res = send(iochan_getfd(pi), htbuf->buf + htbuf->offset, htbuf->len, 0);
1036 yaz_log(YLOG_WARN|YLOG_ERRNO, "write");
1037 http_channel_destroy(hc->iochan);
1040 if (res == htbuf->len)
1042 struct http_buf *np = htbuf->next;
1043 http_buf_destroy(hc->http_server, htbuf);
1049 htbuf->offset += res;
1053 iochan_setflags(pi, EVENT_INPUT); // Turns off output flag
1057 yaz_log(YLOG_WARN, "Unexpected event on connection");
1058 http_channel_destroy(hc->iochan);
1062 static void http_fire_observers(struct http_channel *c);
1063 static void http_destroy_observers(struct http_channel *c);
1066 static void http_channel_destroy(IOCHAN i)
1068 struct http_channel *s = iochan_getdata(i);
1069 http_server_t http_server;
1073 if (s->proxy->iochan)
1076 closesocket(iochan_getfd(s->proxy->iochan));
1078 close(iochan_getfd(s->proxy->iochan));
1080 iochan_destroy(s->proxy->iochan);
1082 http_buf_destroy_queue(s->http_server, s->proxy->oqueue);
1085 http_buf_destroy_queue(s->http_server, s->iqueue);
1086 http_buf_destroy_queue(s->http_server, s->oqueue);
1087 http_fire_observers(s);
1088 http_destroy_observers(s);
1090 http_server = s->http_server; /* save it for destroy (decref) */
1092 yaz_mutex_enter(s->http_server->mutex);
1093 s->next = s->http_server->http_channel_freelist;
1094 s->http_server->http_channel_freelist = s;
1095 yaz_mutex_leave(s->http_server->mutex);
1097 http_server_destroy(http_server);
1100 closesocket(iochan_getfd(i));
1102 close(iochan_getfd(i));
1107 static struct http_channel *http_channel_create(http_server_t hs,
1109 struct conf_server *server)
1111 struct http_channel *r;
1113 yaz_mutex_enter(hs->mutex);
1114 r = hs->http_channel_freelist;
1116 hs->http_channel_freelist = r->next;
1117 yaz_mutex_leave(hs->mutex);
1121 nmem_reset(r->nmem);
1122 wrbuf_rewind(r->wrbuf);
1126 r = xmalloc(sizeof(struct http_channel));
1127 r->nmem = nmem_create();
1128 r->wrbuf = wrbuf_alloc();
1130 http_server_incref(hs);
1131 r->http_server = hs;
1132 r->http_sessions = hs->http_sessions;
1133 assert(r->http_sessions);
1137 r->iqueue = r->oqueue = 0;
1138 r->state = Http_Idle;
1144 yaz_log(YLOG_WARN, "Invalid HTTP forward address");
1147 strcpy(r->addr, addr);
1153 /* Accept a new command connection */
1154 static void http_accept(IOCHAN i, int event)
1156 struct sockaddr_in addr;
1157 int fd = iochan_getfd(i);
1161 struct http_channel *ch;
1162 struct conf_server *server = iochan_getdata(i);
1165 if ((s = accept(fd, (struct sockaddr *) &addr, &len)) < 0)
1167 yaz_log(YLOG_WARN|YLOG_ERRNO, "accept");
1172 yaz_log(YLOG_DEBUG, "New command connection");
1173 c = iochan_create(s, http_io, EVENT_INPUT | EVENT_EXCEPT);
1175 ch = http_channel_create(server->http_server, inet_ntoa(addr.sin_addr),
1178 iochan_setdata(c, ch);
1179 iochan_add(server->iochan_man, c);
1182 /* Create a http-channel listener, syntax [host:]port */
1183 int http_init(const char *addr, struct conf_server *server)
1188 struct sockaddr_in myaddr;
1193 yaz_log(YLOG_LOG, "HTTP listener %s", addr);
1195 memset(&myaddr, 0, sizeof myaddr);
1196 myaddr.sin_family = AF_INET;
1197 pp = strchr(addr, ':');
1200 WRBUF w = wrbuf_alloc();
1203 wrbuf_write(w, addr, pp - addr);
1206 he = gethostbyname(wrbuf_cstr(w));
1210 yaz_log(YLOG_FATAL, "Unable to resolve '%s'", addr);
1213 memcpy(&myaddr.sin_addr.s_addr, he->h_addr_list[0], he->h_length);
1214 port = atoi(pp + 1);
1219 myaddr.sin_addr.s_addr = INADDR_ANY;
1222 myaddr.sin_port = htons(port);
1224 if (!(p = getprotobyname("tcp"))) {
1227 if ((l = socket(PF_INET, SOCK_STREAM, p->p_proto)) < 0)
1228 yaz_log(YLOG_FATAL|YLOG_ERRNO, "socket");
1229 if (setsockopt(l, SOL_SOCKET, SO_REUSEADDR, (char*)
1230 &one, sizeof(one)) < 0)
1233 if (bind(l, (struct sockaddr *) &myaddr, sizeof myaddr) < 0)
1235 yaz_log(YLOG_FATAL|YLOG_ERRNO, "bind");
1238 if (listen(l, SOMAXCONN) < 0)
1240 yaz_log(YLOG_FATAL|YLOG_ERRNO, "listen");
1244 server->http_server = http_server_create();
1246 server->http_server->listener_socket = l;
1248 c = iochan_create(l, http_accept, EVENT_INPUT | EVENT_EXCEPT);
1249 iochan_setdata(c, server);
1251 iochan_add(server->iochan_man, c);
1255 void http_close_server(struct conf_server *server)
1257 /* break the event_loop (select) by closing down the HTTP listener sock */
1258 if (server->http_server->listener_socket)
1261 closesocket(server->http_server->listener_socket);
1263 close(server->http_server->listener_socket);
1268 void http_set_proxyaddr(const char *host, struct conf_server *server)
1273 WRBUF w = wrbuf_alloc();
1275 yaz_log(YLOG_LOG, "HTTP backend %s", host);
1277 p = strchr(host, ':');
1281 wrbuf_write(w, host, p - host);
1287 wrbuf_puts(w, host);
1289 if (!(he = gethostbyname(wrbuf_cstr(w))))
1291 fprintf(stderr, "Failed to lookup '%s'\n", wrbuf_cstr(w));
1296 server->http_server->proxy_addr = xmalloc(sizeof(struct sockaddr_in));
1297 server->http_server->proxy_addr->sin_family = he->h_addrtype;
1298 memcpy(&server->http_server->proxy_addr->sin_addr.s_addr,
1299 he->h_addr_list[0], he->h_length);
1300 server->http_server->proxy_addr->sin_port = htons(port);
1303 static void http_fire_observers(struct http_channel *c)
1305 http_channel_observer_t p = c->observers;
1308 p->destroy(p->data, c, p->data2);
1313 static void http_destroy_observers(struct http_channel *c)
1315 while (c->observers)
1317 http_channel_observer_t obs = c->observers;
1318 c->observers = obs->next;
1323 http_channel_observer_t http_add_observer(struct http_channel *c, void *data,
1324 http_channel_destroy_t des)
1326 http_channel_observer_t obs = xmalloc(sizeof(*obs));
1331 obs->next = c->observers;
1336 void http_remove_observer(http_channel_observer_t obs)
1338 struct http_channel *c = obs->chan;
1339 http_channel_observer_t found, *p = &c->observers;
1348 struct http_channel *http_channel_observer_chan(http_channel_observer_t obs)
1353 void http_observer_set_data2(http_channel_observer_t obs, void *data2)
1358 http_server_t http_server_create(void)
1360 http_server_t hs = xmalloc(sizeof(*hs));
1364 hs->http_buf_freelist = 0;
1365 hs->http_channel_freelist = 0;
1366 hs->http_sessions = 0;
1370 void http_server_destroy(http_server_t hs)
1378 yaz_mutex_enter(hs->mutex);
1379 r = --(hs->ref_count);
1380 yaz_mutex_leave(hs->mutex);
1383 r = --(hs->ref_count);
1387 struct http_buf *b = hs->http_buf_freelist;
1388 struct http_channel *c = hs->http_channel_freelist;
1391 struct http_buf *b_next = b->next;
1397 struct http_channel *c_next = c->next;
1398 nmem_destroy(c->nmem);
1399 wrbuf_destroy(c->wrbuf);
1403 http_sessions_destroy(hs->http_sessions);
1404 xfree(hs->proxy_addr);
1405 yaz_mutex_destroy(&hs->mutex);
1411 void http_server_incref(http_server_t hs)
1414 yaz_mutex_enter(hs->mutex);
1416 yaz_mutex_leave(hs->mutex);
1419 void http_mutex_init(struct conf_server *server)
1423 assert(server->http_server->mutex == 0);
1424 yaz_mutex_create(&server->http_server->mutex);
1425 server->http_server->http_sessions = http_sessions_create();
1431 * c-file-style: "Stroustrup"
1432 * indent-tabs-mode: nil
1434 * vim: shiftwidth=4 tabstop=8 expandtab