1 /* This file is part of Pazpar2.
2 Copyright (C) 2006-2011 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
24 #include <sys/types.h>
33 #include <yaz/snprintf.h>
34 #include <yaz/yaz-util.h>
38 #include "parameters.h"
47 void print_meminfo(WRBUF wrbuf)
49 struct mallinfo minfo;
51 wrbuf_printf(wrbuf, " <memory>\n"
52 " <arena>%d</arena>\n"
53 " <uordblks>%d</uordblks>\n"
54 " <fordblks>%d</fordblks>\n"
55 " <ordblks>%d</ordblks>\n"
56 " <keepcost>%d</keepcost>\n"
57 " <hblks>%d</hblks>\n"
58 " <hblkhd>%d</hblkhd>\n"
60 " <virtuse>%d</virtuse>\n"
62 minfo.arena, minfo.uordblks, minfo.fordblks,minfo.ordblks, minfo.keepcost, minfo.hblks, minfo.hblkhd, minfo.arena + minfo.hblkhd, minfo.uordblks + minfo.hblkhd);
66 #define print_meminfo(x)
70 // Update this when the protocol changes
71 #define PAZPAR2_PROTOCOL_VERSION "1"
73 #define HTTP_COMMAND_RESPONSE_PREFIX "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
76 IOCHAN timeout_iochan; // NOTE: This is NOT associated with a socket
77 struct session *psession;
78 unsigned int session_id;
83 http_sessions_t http_sessions;
84 struct http_session *next;
87 struct http_sessions {
88 struct http_session *session_list;
93 static YAZ_MUTEX g_http_session_mutex = 0;
94 static int g_http_sessions = 0;
96 int http_session_use(int delta)
99 if (!g_http_session_mutex)
100 yaz_mutex_create(&g_http_session_mutex);
101 yaz_mutex_enter(g_http_session_mutex);
102 g_http_sessions += delta;
103 sessions = g_http_sessions;
104 yaz_mutex_leave(g_http_session_mutex);
105 yaz_log(YLOG_DEBUG, "%s sessions=%d", delta == 0 ? "" : (delta > 0 ? "INC" : "DEC"), sessions);
110 http_sessions_t http_sessions_create(void)
112 http_sessions_t hs = xmalloc(sizeof(*hs));
113 hs->session_list = 0;
115 pazpar2_mutex_create(&hs->mutex, "http_sessions");
116 hs->log_level = yaz_log_module_level("HTTP");
120 void http_sessions_destroy(http_sessions_t hs)
124 struct http_session *s = hs->session_list;
127 struct http_session *s_next = s->next;
128 iochan_destroy(s->timeout_iochan);
129 destroy_session(s->psession);
130 nmem_destroy(s->nmem);
133 yaz_mutex_destroy(&hs->mutex);
138 void http_session_destroy(struct http_session *s);
140 static void session_timeout(IOCHAN i, int event)
142 struct http_session *s = iochan_getdata(i);
143 http_session_destroy(s);
146 struct http_session *http_session_create(struct conf_service *service,
147 http_sessions_t http_sessions,
150 NMEM nmem = nmem_create();
151 struct http_session *r = nmem_malloc(nmem, sizeof(*r));
154 sprintf(tmp_str, "session#%u", sesid);
155 r->psession = new_session(nmem, service, sesid);
156 r->session_id = sesid;
159 r->destroy_counter = r->activity_counter = 0;
160 r->http_sessions = http_sessions;
162 yaz_mutex_enter(http_sessions->mutex);
163 r->next = http_sessions->session_list;
164 http_sessions->session_list = r;
165 yaz_mutex_leave(http_sessions->mutex);
167 r->timeout_iochan = iochan_create(-1, session_timeout, 0, "http_session_timeout");
168 iochan_setdata(r->timeout_iochan, r);
169 yaz_log(http_sessions->log_level, "%p Session %u created. timeout chan=%p timeout=%d", r, sesid, r->timeout_iochan, service->session_timeout);
170 iochan_settimeout(r->timeout_iochan, service->session_timeout);
172 iochan_add(service->server->iochan_man, r->timeout_iochan);
177 void http_session_destroy(struct http_session *s)
179 int must_destroy = 0;
181 http_sessions_t http_sessions = s->http_sessions;
183 yaz_log(http_sessions->log_level, "%p HTTP Session %u destroyed", s, s->session_id);
184 yaz_mutex_enter(http_sessions->mutex);
185 /* only if http_session has no active http sessions on it can be destroyed */
186 if (s->destroy_counter == s->activity_counter)
188 struct http_session **p = 0;
190 for (p = &http_sessions->session_list; *p; p = &(*p)->next)
197 yaz_mutex_leave(http_sessions->mutex);
199 { /* destroying for real */
200 yaz_log(http_sessions->log_level, "%p HTTP Session %u destroyed", s, s->session_id);
201 iochan_destroy(s->timeout_iochan);
202 destroy_session(s->psession);
203 http_session_use(-1);
204 nmem_destroy(s->nmem);
207 yaz_log(http_sessions->log_level, "%p HTTP Session %u destroyed delayed. Active clients (%d-%d). Waiting for new timeout.",
208 s, s->session_id, s->activity_counter, s->destroy_counter);
213 static const char *get_msg(enum pazpar2_error_code code)
215 struct pazpar2_error_msg {
216 enum pazpar2_error_code code;
219 static const struct pazpar2_error_msg ar[] = {
220 { PAZPAR2_NO_SESSION, "Session does not exist or it has expired"},
221 { PAZPAR2_MISSING_PARAMETER, "Missing parameter"},
222 { PAZPAR2_MALFORMED_PARAMETER_VALUE, "Malformed parameter value"},
223 { PAZPAR2_MALFORMED_PARAMETER_ENCODING, "Malformed parameter encoding"},
224 { PAZPAR2_MALFORMED_SETTING, "Malformed setting argument"},
225 { PAZPAR2_HITCOUNTS_FAILED, "Failed to retrieve hitcounts"},
226 { PAZPAR2_RECORD_MISSING, "Record missing"},
227 { PAZPAR2_NO_TARGETS, "No targets"},
228 { PAZPAR2_CONFIG_TARGET, "Target cannot be configured"},
229 { PAZPAR2_RECORD_FAIL, "Record command failed"},
230 { PAZPAR2_NOT_IMPLEMENTED, "Not implemented"},
231 { PAZPAR2_NO_SERVICE, "No service"},
232 { PAZPAR2_LAST_ERROR, "Last error"},
238 if (code == ar[i].code)
245 static void error(struct http_response *rs,
246 enum pazpar2_error_code code,
249 struct http_channel *c = rs->channel;
250 WRBUF text = wrbuf_alloc();
251 const char *http_status = "417";
252 const char *msg = get_msg(code);
254 rs->msg = nmem_strdup(c->nmem, msg);
255 strcpy(rs->code, http_status);
257 wrbuf_printf(text, HTTP_COMMAND_RESPONSE_PREFIX "<error code=\"%d\" msg=\"%s\">", (int) code,
260 wrbuf_xmlputs(text, addinfo);
261 wrbuf_puts(text, "</error>");
263 yaz_log(YLOG_WARN, "HTTP %s %s%s%s", http_status,
264 msg, addinfo ? ": " : "" , addinfo ? addinfo : "");
265 rs->payload = nmem_strdup(c->nmem, wrbuf_cstr(text));
267 http_send_response(c);
270 static void response_open_no_status(struct http_channel *c, const char *command)
272 wrbuf_rewind(c->wrbuf);
273 wrbuf_printf(c->wrbuf, "%s<%s>",
274 HTTP_COMMAND_RESPONSE_PREFIX, command);
277 static void response_open(struct http_channel *c, const char *command)
279 response_open_no_status(c, command);
280 wrbuf_puts(c->wrbuf, "<status>OK</status>");
283 static void response_close(struct http_channel *c, const char *command)
285 struct http_response *rs = c->response;
287 wrbuf_printf(c->wrbuf, "</%s>", command);
288 rs->payload = nmem_strdup(c->nmem, wrbuf_cstr(c->wrbuf));
289 http_send_response(c);
292 unsigned int make_sessionid(void)
294 static int seq = 0; /* thread pr */
298 if (global_parameters.predictable_sessions)
307 if (gettimeofday(&t, 0) < 0)
309 yaz_log(YLOG_WARN|YLOG_ERRNO, "gettimeofday");
312 /* at most 256 sessions per second ..
313 (long long would be more appropriate)*/
315 res = ((res << 8) | (seq & 0xff)) & ((1U << 31) - 1);
321 static struct http_session *locate_session(struct http_channel *c)
323 struct http_response *rs = c->response;
324 struct http_request *rq = c->request;
325 struct http_session *p;
326 const char *session = http_argbyname(rq, "session");
327 http_sessions_t http_sessions = c->http_sessions;
332 error(rs, PAZPAR2_MISSING_PARAMETER, "session");
336 yaz_mutex_enter(http_sessions->mutex);
337 for (p = http_sessions->session_list; p; p = p->next)
338 if (id == p->session_id)
341 p->activity_counter++;
342 yaz_mutex_leave(http_sessions->mutex);
344 iochan_activity(p->timeout_iochan);
346 error(rs, PAZPAR2_NO_SESSION, session);
350 // Call after use of locate_session, in order to increment the destroy_counter
351 static void release_session(struct http_channel *c,
352 struct http_session *session)
354 http_sessions_t http_sessions = c->http_sessions;
355 yaz_mutex_enter(http_sessions->mutex);
357 session->destroy_counter++;
358 yaz_mutex_leave(http_sessions->mutex);
361 // Decode settings parameters and apply to session
362 // Syntax: setting[target]=value
363 static int process_settings(struct session *se, struct http_request *rq,
364 struct http_response *rs)
366 struct http_argument *a;
368 for (a = rq->arguments; a; a = a->next)
369 if (strchr(a->name, '['))
376 // Nmem_strsplit *rules*!!!
377 nmem_strsplit(se->session_nmem, "[]", a->name, &res, &num);
380 error(rs, PAZPAR2_MALFORMED_SETTING, a->name);
385 session_apply_setting(se, dbname, setting,
386 nmem_strdup(se->session_nmem, a->value));
391 static void cmd_exit(struct http_channel *c)
393 yaz_log(YLOG_WARN, "exit");
395 response_open(c, "exit");
396 response_close(c, "exit");
397 http_close_server(c->server);
400 static void cmd_init(struct http_channel *c)
402 struct http_request *r = c->request;
403 const char *clear = http_argbyname(r, "clear");
404 const char *content_type = http_lookup_header(r->headers, "Content-Type");
406 struct http_session *s;
407 struct http_response *rs = c->response;
408 struct conf_service *service = 0; /* no service (yet) */
410 if (r->content_len && content_type &&
411 !yaz_strcmp_del("text/xml", content_type, "; "))
413 xmlDoc *doc = xmlParseMemory(r->content_buf, r->content_len);
417 error(rs, PAZPAR2_MALFORMED_SETTING, 0);
420 root_n = xmlDocGetRootElement(doc);
421 service = service_create(c->server, root_n);
425 error(rs, PAZPAR2_MALFORMED_SETTING, 0);
432 const char *service_name = http_argbyname(c->request, "service");
433 service = locate_service(c->server, service_name);
436 error(rs, PAZPAR2_NO_SERVICE, service_name ? service_name : "unnamed");
440 sesid = make_sessionid();
441 s = http_session_create(service, c->http_sessions, sesid);
443 yaz_log(c->http_sessions->log_level, "%p Session init %u ", s, sesid);
444 if (!clear || *clear == '0')
445 session_init_databases(s->psession);
447 yaz_log(YLOG_LOG, "HTTP Session %u init: No databases preloaded", sesid);
449 if (process_settings(s->psession, c->request, c->response) < 0)
452 response_open(c, "init");
453 wrbuf_printf(c->wrbuf, "<session>%d", sesid);
454 if (c->server->server_id)
456 wrbuf_puts(c->wrbuf, ".");
457 wrbuf_puts(c->wrbuf, c->server->server_id);
459 wrbuf_puts(c->wrbuf, "</session>"
460 "<protocol>" PAZPAR2_PROTOCOL_VERSION "</protocol>");
462 response_close(c, "init");
465 static void apply_local_setting(void *client_data,
468 struct session *se = (struct session *) client_data;
470 session_apply_setting(se, nmem_strdup(se->session_nmem, set->target),
471 nmem_strdup(se->session_nmem, set->name),
472 nmem_strdup(se->session_nmem, set->value));
475 static void cmd_settings(struct http_channel *c)
477 struct http_response *rs = c->response;
478 struct http_request *rq = c->request;
479 struct http_session *s = locate_session(c);
480 const char *content_type = http_lookup_header(rq->headers, "Content-Type");
485 if (rq->content_len && content_type &&
486 !yaz_strcmp_del("text/xml", content_type, "; "))
488 xmlDoc *doc = xmlParseMemory(rq->content_buf, rq->content_len);
492 error(rs, PAZPAR2_MALFORMED_SETTING, 0);
495 root_n = xmlDocGetRootElement(doc);
497 settings_read_node_x(root_n, s->psession, apply_local_setting);
501 if (process_settings(s->psession, rq, rs) < 0)
503 release_session(c, s);
506 response_open(c, "settings");
507 response_close(c, "settings");
508 release_session(c, s);
511 static void cmd_termlist(struct http_channel *c)
513 struct http_request *rq = c->request;
514 struct http_session *s = locate_session(c);
515 const char *name = http_argbyname(rq, "name");
516 const char *nums = http_argbyname(rq, "num");
523 status = session_active_clients(s->psession);
528 response_open_no_status(c, "termlist");
529 wrbuf_printf(c->wrbuf, "<activeclients>%d</activeclients>\n", status);
531 perform_termlist(c, s->psession, name, num);
533 response_close(c, "termlist");
534 release_session(c, s);
537 size_t session_get_memory_status(struct session *session);
539 static void session_status(struct http_channel *c, struct http_session *s)
542 wrbuf_printf(c->wrbuf, "<http_count>%u</http_count>\n", s->activity_counter);
543 wrbuf_printf(c->wrbuf, "<http_nmem>%zu</http_nmem>\n", nmem_total(s->nmem) );
544 session_nmem = session_get_memory_status(s->psession);
545 wrbuf_printf(c->wrbuf, "<session_nmem>%zu</session_nmem>\n", session_nmem);
548 static void cmd_session_status(struct http_channel *c)
550 struct http_session *s = locate_session(c);
554 response_open(c, "session-status");
555 session_status(c, s);
556 response_close(c, "session-status");
557 release_session(c, s);
560 int sessions_count(void);
561 int clients_count(void);
562 #ifdef HAVE_RESULTSETS_COUNT
563 int resultsets_count(void);
565 #define resultsets_count() 0
568 static void cmd_server_status(struct http_channel *c)
570 int sessions = sessions_count();
571 int clients = clients_count();
572 int resultsets = resultsets_count();
574 response_open(c, "server-status");
575 wrbuf_printf(c->wrbuf, "\n <sessions>%u</sessions>\n", sessions);
576 wrbuf_printf(c->wrbuf, " <clients>%u</clients>\n", clients);
577 /* Only works if yaz has been compiled with enabling of this */
578 wrbuf_printf(c->wrbuf, " <resultsets>%u</resultsets>\n",resultsets);
579 print_meminfo(c->wrbuf);
581 /* TODO add all sessions status */
582 /* http_sessions_t http_sessions = c->http_sessions; */
583 /* struct http_session *p; */
585 yaz_mutex_enter(http_sessions->mutex);
586 for (p = http_sessions->session_list; p; p = p->next)
588 p->activity_counter++;
589 wrbuf_puts(c->wrbuf, "<session-status>\n");
590 wrbuf_printf(c->wrbuf, "<id>%s</id>\n", p->session_id);
591 yaz_mutex_leave(http_sessions->mutex);
592 session_status(c, p);
593 wrbuf_puts(c->wrbuf, "</session-status>\n");
594 yaz_mutex_enter(http_sessions->mutex);
595 p->activity_counter--;
597 yaz_mutex_leave(http_sessions->mutex);
599 response_close(c, "server-status");
604 static void cmd_bytarget(struct http_channel *c)
606 struct http_request *rq = c->request;
607 struct http_session *s = locate_session(c);
608 struct hitsbytarget *ht;
609 const char *settings = http_argbyname(rq, "settings");
614 ht = get_hitsbytarget(s->psession, &count, c->nmem);
615 response_open(c, "bytarget");
617 for (i = 0; i < count; i++)
619 wrbuf_puts(c->wrbuf, "\n<target>");
621 wrbuf_puts(c->wrbuf, "<id>");
622 wrbuf_xmlputs(c->wrbuf, ht[i].id);
623 wrbuf_puts(c->wrbuf, "</id>\n");
625 if (ht[i].name && ht[i].name[0])
627 wrbuf_puts(c->wrbuf, "<name>");
628 wrbuf_xmlputs(c->wrbuf, ht[i].name);
629 wrbuf_puts(c->wrbuf, "</name>\n");
632 wrbuf_printf(c->wrbuf, "<hits>" ODR_INT_PRINTF "</hits>\n", ht[i].hits);
633 wrbuf_printf(c->wrbuf, "<diagnostic>%d</diagnostic>\n", ht[i].diagnostic);
634 wrbuf_printf(c->wrbuf, "<records>%d</records>\n", ht[i].records);
636 wrbuf_puts(c->wrbuf, "<state>");
637 wrbuf_xmlputs(c->wrbuf, ht[i].state);
638 wrbuf_puts(c->wrbuf, "</state>\n");
639 if (settings && *settings == '1')
641 wrbuf_puts(c->wrbuf, "<settings>\n");
642 wrbuf_puts(c->wrbuf, ht[i].settings_xml);
643 wrbuf_puts(c->wrbuf, "</settings>\n");
645 wrbuf_puts(c->wrbuf, "</target>");
647 response_close(c, "bytarget");
648 release_session(c, s);
651 static void write_metadata(WRBUF w, struct conf_service *service,
652 struct record_metadata **ml, int full)
656 for (imeta = 0; imeta < service->num_metadata; imeta++)
658 struct conf_metadata *cmd = &service->metadata[imeta];
659 struct record_metadata *md;
660 if (!cmd->brief && !full)
662 for (md = ml[imeta]; md; md = md->next)
664 struct record_metadata_attr *attr = md->attributes;
665 wrbuf_printf(w, "\n<md-%s", cmd->name);
667 for (; attr; attr = attr->next)
669 wrbuf_printf(w, " %s=\"", attr->name);
670 wrbuf_xmlputs(w, attr->value);
676 case Metadata_type_generic:
677 wrbuf_xmlputs(w, md->data.text.disp);
679 case Metadata_type_year:
680 wrbuf_printf(w, "%d", md->data.number.min);
681 if (md->data.number.min != md->data.number.max)
682 wrbuf_printf(w, "-%d", md->data.number.max);
685 wrbuf_puts(w, "[can't represent]");
687 wrbuf_printf(w, "</md-%s>", cmd->name);
692 static void write_subrecord(struct record *r, WRBUF w,
693 struct conf_service *service, int show_details)
695 const char *name = session_setting_oneval(
696 client_get_database(r->client), PZ_NAME);
698 wrbuf_puts(w, "<location id=\"");
699 wrbuf_xmlputs(w, client_get_id(r->client));
700 wrbuf_puts(w, "\" ");
702 wrbuf_puts(w, "name=\"");
703 wrbuf_xmlputs(w, *name ? name : "Unknown");
704 wrbuf_puts(w, "\">");
706 write_metadata(w, service, r->metadata, show_details);
707 wrbuf_puts(w, "</location>\n");
710 static void show_raw_record_error(void *data, const char *addinfo)
712 http_channel_observer_t obs = data;
713 struct http_channel *c = http_channel_observer_chan(obs);
714 struct http_response *rs = c->response;
716 http_remove_observer(obs);
718 error(rs, PAZPAR2_RECORD_FAIL, addinfo);
721 static void show_raw_record_ok(void *data, const char *buf, size_t sz)
723 http_channel_observer_t obs = data;
724 struct http_channel *c = http_channel_observer_chan(obs);
725 struct http_response *rs = c->response;
727 http_remove_observer(obs);
729 wrbuf_write(c->wrbuf, buf, sz);
730 rs->payload = nmem_strdup(c->nmem, wrbuf_cstr(c->wrbuf));
731 http_send_response(c);
735 static void show_raw_record_ok_binary(void *data, const char *buf, size_t sz)
737 http_channel_observer_t obs = data;
738 struct http_channel *c = http_channel_observer_chan(obs);
739 struct http_response *rs = c->response;
741 http_remove_observer(obs);
743 wrbuf_write(c->wrbuf, buf, sz);
744 rs->payload = nmem_strdup(c->nmem, wrbuf_cstr(c->wrbuf));
746 rs->content_type = "application/octet-stream";
747 http_send_response(c);
751 void show_raw_reset(void *data, struct http_channel *c, void *data2)
753 //struct client *client = data;
754 //client_show_raw_remove(client, data2);
757 static void cmd_record_ready(void *data);
759 static void cmd_record(struct http_channel *c)
761 struct http_response *rs = c->response;
762 struct http_request *rq = c->request;
763 struct http_session *s = locate_session(c);
764 struct record_cluster *rec, *prev_r, *next_r;
766 struct conf_service *service;
767 const char *idstr = http_argbyname(rq, "id");
768 const char *offsetstr = http_argbyname(rq, "offset");
769 const char *binarystr = http_argbyname(rq, "binary");
773 service = s->psession->service;
776 error(rs, PAZPAR2_MISSING_PARAMETER, "id");
779 wrbuf_rewind(c->wrbuf);
780 if (!(rec = show_single_start(s->psession, idstr, &prev_r, &next_r)))
782 if (session_active_clients(s->psession) == 0)
784 error(rs, PAZPAR2_RECORD_MISSING, idstr);
786 else if (session_set_watch(s->psession, SESSION_WATCH_RECORD,
787 cmd_record_ready, c, c) != 0)
789 error(rs, PAZPAR2_RECORD_MISSING, idstr);
791 release_session(c, s);
796 int offset = atoi(offsetstr);
797 const char *syntax = http_argbyname(rq, "syntax");
798 const char *esn = http_argbyname(rq, "esn");
800 struct record*r = rec->records;
803 if (binarystr && *binarystr != '0')
806 for (i = 0; i < offset && r; r = r->next, i++)
810 error(rs, PAZPAR2_RECORD_FAIL, "no record at offset given");
814 http_channel_observer_t obs =
815 http_add_observer(c, r->client, show_raw_reset);
816 int ret = client_show_raw_begin(r->client, r->position,
819 show_raw_record_error,
821 show_raw_record_ok_binary :
826 http_remove_observer(obs);
827 error(rs, PAZPAR2_NO_SESSION, 0);
833 response_open_no_status(c, "record");
834 wrbuf_puts(c->wrbuf, "\n<recid>");
835 wrbuf_xmlputs(c->wrbuf, rec->recid);
836 wrbuf_puts(c->wrbuf, "</recid>\n");
839 wrbuf_puts(c->wrbuf, "<prevrecid>");
840 wrbuf_xmlputs(c->wrbuf, prev_r->recid);
841 wrbuf_puts(c->wrbuf, "</prevrecid>\n");
845 wrbuf_puts(c->wrbuf, "<nextrecid>");
846 wrbuf_xmlputs(c->wrbuf, next_r->recid);
847 wrbuf_puts(c->wrbuf, "</nextrecid>\n");
849 wrbuf_printf(c->wrbuf, "<activeclients>%d</activeclients>\n",
850 session_active_clients(s->psession));
851 write_metadata(c->wrbuf, service, rec->metadata, 1);
852 for (r = rec->records; r; r = r->next)
853 write_subrecord(r, c->wrbuf, service, 1);
854 response_close(c, "record");
856 show_single_stop(s->psession, rec);
857 release_session(c, s);
860 static void cmd_record_ready(void *data)
862 struct http_channel *c = (struct http_channel *) data;
867 static void show_records(struct http_channel *c, int active)
869 struct http_request *rq = c->request;
870 struct http_response *rs = c->response;
871 struct http_session *s = locate_session(c);
872 struct record_cluster **rl;
873 struct reclist_sortparms *sp;
874 const char *start = http_argbyname(rq, "start");
875 const char *num = http_argbyname(rq, "num");
876 const char *sort = http_argbyname(rq, "sort");
886 // We haven't counted clients yet if we're called on a block release
888 active = session_active_clients(s->psession);
891 startn = atoi(start);
896 if (!(sp = reclist_parse_sortparms(c->nmem, sort, s->psession->service)))
898 error(rs, PAZPAR2_MALFORMED_PARAMETER_VALUE, "sort");
899 release_session(c, s);
905 rl = show_range_start(s->psession, sp, startn, &numn, &total, &total_hits);
907 response_open(c, "show");
908 wrbuf_printf(c->wrbuf, "\n<activeclients>%d</activeclients>\n", active);
909 wrbuf_printf(c->wrbuf, "<merged>%d</merged>\n", total);
910 wrbuf_printf(c->wrbuf, "<total>" ODR_INT_PRINTF "</total>\n", total_hits);
911 wrbuf_printf(c->wrbuf, "<start>%d</start>\n", startn);
912 wrbuf_printf(c->wrbuf, "<num>%d</num>\n", numn);
914 for (i = 0; i < numn; i++)
918 struct record_cluster *rec = rl[i];
919 struct conf_service *service = s->psession->service;
921 wrbuf_puts(c->wrbuf, "<hit>\n");
922 write_metadata(c->wrbuf, service, rec->metadata, 0);
923 for (ccount = 0, p = rl[i]->records; p; p = p->next, ccount++)
924 write_subrecord(p, c->wrbuf, service, 0); // subrecs w/o details
926 wrbuf_printf(c->wrbuf, "<count>%d</count>\n", ccount);
927 if (strstr(sort, "relevance"))
928 wrbuf_printf(c->wrbuf, "<relevance>%d</relevance>\n",
929 rec->relevance_score);
930 wrbuf_puts(c->wrbuf, "<recid>");
931 wrbuf_xmlputs(c->wrbuf, rec->recid);
932 wrbuf_puts(c->wrbuf, "</recid>\n");
933 wrbuf_puts(c->wrbuf, "</hit>\n");
936 show_range_stop(s->psession, rl);
938 response_close(c, "show");
939 release_session(c, s);
942 static void show_records_ready(void *data)
944 struct http_channel *c = (struct http_channel *) data;
949 static void cmd_show(struct http_channel *c)
951 struct http_request *rq = c->request;
952 struct http_session *s = locate_session(c);
953 const char *block = http_argbyname(rq, "block");
954 const char *sort = http_argbyname(rq, "sort");
955 struct reclist_sortparms *sp;
964 if (!(sp = reclist_parse_sortparms(c->nmem, sort, s->psession->service)))
966 error(c->response, PAZPAR2_MALFORMED_PARAMETER_VALUE, "sort");
967 release_session(c, s);
970 session_sort(s->psession, sp->name, sp->increasing);
972 status = session_active_clients(s->psession);
976 if (!strcmp(block, "preferred") && !session_is_preferred_clients_ready(s->psession) && reclist_get_num_records(s->psession->reclist) == 0)
978 // if there is already a watch/block. we do not block this one
979 if (session_set_watch(s->psession, SESSION_WATCH_SHOW_PREF,
980 show_records_ready, c, c) != 0)
982 yaz_log(c->http_sessions->log_level,
983 "%p Session %u: Blocking on cmd_show. Waiting for preferred targets", s, s->session_id);
985 release_session(c, s);
991 // if there is already a watch/block. we do not block this one
992 if (session_set_watch(s->psession, SESSION_WATCH_SHOW,
993 show_records_ready, c, c) != 0)
995 yaz_log(c->http_sessions->log_level, "%p Session %u: Blocking on cmd_show", s, s->session_id);
997 release_session(c, s);
1001 show_records(c, status);
1002 release_session(c, s);
1005 static void cmd_ping(struct http_channel *c)
1007 struct http_session *s = locate_session(c);
1010 response_open(c, "ping");
1011 response_close(c, "ping");
1012 release_session(c, s);
1015 static void cmd_search(struct http_channel *c)
1017 struct http_request *rq = c->request;
1018 struct http_response *rs = c->response;
1019 struct http_session *s = locate_session(c);
1020 const char *query = http_argbyname(rq, "query");
1021 const char *filter = http_argbyname(rq, "filter");
1022 const char *maxrecs = http_argbyname(rq, "maxrecs");
1023 const char *startrecs = http_argbyname(rq, "startrecs");
1024 const char *limit = http_argbyname(rq, "limit");
1025 enum pazpar2_error_code code;
1026 const char *addinfo = 0;
1032 error(rs, PAZPAR2_MISSING_PARAMETER, "query");
1033 release_session(c, s);
1036 if (!yaz_utf8_check(query))
1038 error(rs, PAZPAR2_MALFORMED_PARAMETER_ENCODING, "query");
1039 release_session(c, s);
1042 code = session_search(s->psession, query, startrecs, maxrecs, filter, limit,
1043 &addinfo, "relevance", 0);
1046 error(rs, code, addinfo);
1047 release_session(c, s);
1050 response_open(c, "search");
1051 response_close(c, "search");
1052 http_send_response(c);
1053 release_session(c, s);
1057 static void cmd_stat(struct http_channel *c)
1059 struct http_session *s = locate_session(c);
1060 struct statistics stat;
1068 clients = session_active_clients(s->psession);
1069 statistics(s->psession, &stat);
1071 if (stat.num_clients > 0)
1073 progress = (stat.num_clients - clients) / (float)stat.num_clients;
1076 response_open_no_status(c, "stat");
1077 wrbuf_printf(c->wrbuf, "<activeclients>%d</activeclients>\n", clients);
1078 wrbuf_printf(c->wrbuf, "<hits>" ODR_INT_PRINTF "</hits>\n", stat.num_hits);
1079 wrbuf_printf(c->wrbuf, "<records>%d</records>\n", stat.num_records);
1080 wrbuf_printf(c->wrbuf, "<clients>%d</clients>\n", stat.num_clients);
1081 wrbuf_printf(c->wrbuf, "<unconnected>%d</unconnected>\n", stat.num_no_connection);
1082 wrbuf_printf(c->wrbuf, "<connecting>%d</connecting>\n", stat.num_connecting);
1083 wrbuf_printf(c->wrbuf, "<working>%d</working>\n", stat.num_working);
1084 wrbuf_printf(c->wrbuf, "<idle>%d</idle>\n", stat.num_idle);
1085 wrbuf_printf(c->wrbuf, "<failed>%d</failed>\n", stat.num_failed);
1086 wrbuf_printf(c->wrbuf, "<error>%d</error>\n", stat.num_error);
1087 wrbuf_printf(c->wrbuf, "<progress>%.2f</progress>\n", progress);
1088 response_close(c, "stat");
1089 release_session(c, s);
1092 static void cmd_info(struct http_channel *c)
1094 char yaz_version_str[20];
1096 response_open_no_status(c, "info");
1097 wrbuf_puts(c->wrbuf, " <version>\n");
1098 wrbuf_puts(c->wrbuf, " <pazpar2");
1099 #ifdef PAZPAR2_VERSION_SHA1
1100 wrbuf_printf(c->wrbuf, " sha1=\"%s\"", PAZPAR2_VERSION_SHA1);
1102 wrbuf_puts(c->wrbuf, ">");
1103 wrbuf_xmlputs(c->wrbuf, VERSION);
1104 wrbuf_puts(c->wrbuf, "</pazpar2>");
1106 yaz_version(yaz_version_str, 0);
1107 wrbuf_puts(c->wrbuf, " <yaz compiled=\"");
1108 wrbuf_xmlputs(c->wrbuf, YAZ_VERSION);
1109 wrbuf_puts(c->wrbuf, "\">");
1110 wrbuf_xmlputs(c->wrbuf, yaz_version_str);
1111 wrbuf_puts(c->wrbuf, "</yaz>\n");
1113 wrbuf_puts(c->wrbuf, " </version>\n");
1115 info_services(c->server, c->wrbuf);
1117 response_close(c, "info");
1122 void (*fun)(struct http_channel *c);
1124 { "init", cmd_init },
1125 { "settings", cmd_settings },
1126 { "stat", cmd_stat },
1127 { "bytarget", cmd_bytarget },
1128 { "show", cmd_show },
1129 { "search", cmd_search },
1130 { "termlist", cmd_termlist },
1131 { "exit", cmd_exit },
1132 { "session-status", cmd_session_status },
1133 { "server-status", cmd_server_status },
1134 { "ping", cmd_ping },
1135 { "record", cmd_record },
1136 { "info", cmd_info },
1140 void http_command(struct http_channel *c)
1142 const char *command = http_argbyname(c->request, "command");
1143 struct http_response *rs = http_create_response(c);
1148 http_addheader(rs, "Expires", "Thu, 19 Nov 1981 08:52:00 GMT");
1149 http_addheader(rs, "Cache-Control", "no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
1153 error(rs, PAZPAR2_MISSING_PARAMETER, "command");
1156 for (i = 0; commands[i].name; i++)
1157 if (!strcmp(commands[i].name, command))
1159 (*commands[i].fun)(c);
1162 if (!commands[i].name)
1163 error(rs, PAZPAR2_MALFORMED_PARAMETER_VALUE, "command");
1171 * c-file-style: "Stroustrup"
1172 * indent-tabs-mode: nil
1174 * vim: shiftwidth=4 tabstop=8 expandtab