2 * $Id: http_command.c,v 1.6 2007-01-04 20:00:58 quinn Exp $
14 #include <yaz/yaz-util.h>
21 #include "http_command.h"
23 extern struct parameters global_parameters;
24 extern IOCHAN channel_list;
27 IOCHAN timeout_iochan; // NOTE: This is NOT associated with a socket
28 struct session *psession;
29 unsigned int session_id;
31 struct http_session *next;
34 static struct http_session *session_list = 0;
36 void http_session_destroy(struct http_session *s);
38 static void session_timeout(IOCHAN i, int event)
40 struct http_session *s = iochan_getdata(i);
41 http_session_destroy(s);
44 struct http_session *http_session_create()
46 struct http_session *r = xmalloc(sizeof(*r));
47 r->psession = new_session();
50 r->next = session_list;
52 r->timeout_iochan = iochan_create(-1, session_timeout, 0);
53 iochan_setdata(r->timeout_iochan, r);
54 iochan_settimeout(r->timeout_iochan, global_parameters.session_timeout);
55 r->timeout_iochan->next = channel_list;
56 channel_list = r->timeout_iochan;
60 void http_session_destroy(struct http_session *s)
62 struct http_session **p;
64 for (p = &session_list; *p; p = &(*p)->next)
70 iochan_destroy(s->timeout_iochan);
71 destroy_session(s->psession);
75 static void error(struct http_response *rs, char *code, char *msg, char *txt)
77 struct http_channel *c = rs->channel;
82 rs->msg = nmem_strdup(c->nmem, msg);
83 strcpy(rs->code, code);
84 sprintf(tmp, "<error code=\"general\">%s</error>", txt);
85 rs->payload = nmem_strdup(c->nmem, tmp);
86 http_send_response(c);
89 unsigned int make_sessionid()
96 if (gettimeofday(&t, 0) < 0)
99 res = ((res << 8) | (seq & 0xff)) & ((unsigned int) (1 << 31) - 1);
103 static struct http_session *locate_session(struct http_request *rq, struct http_response *rs)
105 struct http_session *p;
106 char *session = http_argbyname(rq, "session");
111 error(rs, "417", "Must supply session", 0);
115 for (p = session_list; p; p = p->next)
116 if (id == p->session_id)
118 iochan_activity(p->timeout_iochan);
121 error(rs, "417", "Session does not exist, or it has expired", 0);
125 static void cmd_exit(struct http_channel *c)
127 yaz_log(YLOG_WARN, "exit");
132 static void cmd_init(struct http_channel *c)
136 struct http_session *s = http_session_create();
137 struct http_response *rs = c->response;
139 yaz_log(YLOG_DEBUG, "HTTP Session init");
140 sesid = make_sessionid();
141 s->session_id = sesid;
142 sprintf(buf, "<init><status>OK</status><session>%u</session></init>", sesid);
143 rs->payload = nmem_strdup(c->nmem, buf);
144 http_send_response(c);
147 // Compares two hitsbytarget nodes by hitcount
148 static int cmp_ht(const void *p1, const void *p2)
150 const struct hitsbytarget *h1 = p1;
151 const struct hitsbytarget *h2 = p2;
152 return h2->hits - h1->hits;
155 // This implements functionality somewhat similar to 'bytarget', but in a termlist form
156 static void targets_termlist(WRBUF wrbuf, struct session *se)
158 struct hitsbytarget *ht;
161 if (!(ht = hitsbytarget(se, &count)))
163 qsort(ht, count, sizeof(struct hitsbytarget), cmp_ht);
164 for (i = 0; i < count && i < 15; i++)
166 wrbuf_puts(wrbuf, "\n<term>\n");
167 wrbuf_printf(wrbuf, "<name>%s</name>\n", ht[i].id);
168 wrbuf_printf(wrbuf, "<frequency>%d</frequency>\n", ht[i].hits);
169 wrbuf_printf(wrbuf, "<state>%s</state>\n", ht[i].state);
170 wrbuf_printf(wrbuf, "<diagnostic>%d</diagnostic>\n", ht[i].diagnostic);
171 wrbuf_puts(wrbuf, "\n</term>\n");
175 static void cmd_termlist(struct http_channel *c)
177 struct http_response *rs = c->response;
178 struct http_request *rq = c->request;
179 struct http_session *s = locate_session(rq, rs);
180 struct termlist_score **p;
183 char *name = http_argbyname(rq, "name");
184 int status = session_active_clients(s->psession);
191 if (strlen(name) > 255)
194 wrbuf_rewind(c->wrbuf);
196 wrbuf_puts(c->wrbuf, "<termlist>");
197 wrbuf_printf(c->wrbuf, "\n<activeclients>%d</activeclients>", status);
203 if (!(tp = strchr(name, ',')))
204 tp = name + strlen(name);
205 strncpy(tname, name, tp - name);
206 tname[tp - name] = '\0';
208 wrbuf_printf(c->wrbuf, "\n<list name=\"%s\">\n", tname);
209 if (!strcmp(tname, "xtargets"))
210 targets_termlist(c->wrbuf, s->psession);
213 p = termlist(s->psession, tname, &len);
215 for (i = 0; i < len; i++)
217 wrbuf_puts(c->wrbuf, "\n<term>");
218 wrbuf_printf(c->wrbuf, "<name>%s</name>", p[i]->term);
219 wrbuf_printf(c->wrbuf, "<frequency>%d</frequency>", p[i]->frequency);
220 wrbuf_puts(c->wrbuf, "</term>");
223 wrbuf_puts(c->wrbuf, "\n</list>");
228 wrbuf_puts(c->wrbuf, "</termlist>");
229 rs->payload = nmem_strdup(rq->channel->nmem, wrbuf_buf(c->wrbuf));
230 http_send_response(c);
234 static void cmd_bytarget(struct http_channel *c)
236 struct http_response *rs = c->response;
237 struct http_request *rq = c->request;
238 struct http_session *s = locate_session(rq, rs);
239 struct hitsbytarget *ht;
244 if (!(ht = hitsbytarget(s->psession, &count)))
246 error(rs, "500", "Failed to retrieve hitcounts", 0);
249 wrbuf_rewind(c->wrbuf);
250 wrbuf_puts(c->wrbuf, "<bytarget><status>OK</status>");
252 for (i = 0; i < count; i++)
254 wrbuf_puts(c->wrbuf, "\n<target>");
255 wrbuf_printf(c->wrbuf, "<id>%s</id>\n", ht[i].id);
256 wrbuf_printf(c->wrbuf, "<hits>%d</hits>\n", ht[i].hits);
257 wrbuf_printf(c->wrbuf, "<diagnostic>%d</diagnostic>\n", ht[i].diagnostic);
258 wrbuf_printf(c->wrbuf, "<records>%d</records>\n", ht[i].records);
259 wrbuf_printf(c->wrbuf, "<state>%s</state>\n", ht[i].state);
260 wrbuf_puts(c->wrbuf, "</target>");
263 wrbuf_puts(c->wrbuf, "</bytarget>");
264 rs->payload = nmem_strdup(c->nmem, wrbuf_buf(c->wrbuf));
265 http_send_response(c);
268 static void show_records(struct http_channel *c, int active)
270 struct http_request *rq = c->request;
271 struct http_response *rs = c->response;
272 struct http_session *s = locate_session(rq, rs);
275 char *start = http_argbyname(rq, "start");
276 char *num = http_argbyname(rq, "num");
286 // We haven't counted clients yet if we're called on a block release
288 active = session_active_clients(s->psession);
291 startn = atoi(start);
295 nmem_show = nmem_create();
296 rl = show(s->psession, startn, &numn, &total, &total_hits, nmem_show);
298 wrbuf_rewind(c->wrbuf);
299 wrbuf_puts(c->wrbuf, "<show>\n<status>OK</status>\n");
300 wrbuf_printf(c->wrbuf, "<activeclients>%d</activeclients>\n", active);
301 wrbuf_printf(c->wrbuf, "<merged>%d</merged>\n", total);
302 wrbuf_printf(c->wrbuf, "<total>%d</total>\n", total_hits);
303 wrbuf_printf(c->wrbuf, "<start>%d</start>\n", startn);
304 wrbuf_printf(c->wrbuf, "<num>%d</num>\n", numn);
306 for (i = 0; i < numn; i++)
311 wrbuf_puts(c->wrbuf, "<hit>\n");
312 wrbuf_printf(c->wrbuf, "<title>%s</title>\n", rl[i]->title);
313 for (ccount = 1, p = rl[i]->next_cluster; p; p = p->next_cluster, ccount++)
316 wrbuf_printf(c->wrbuf, "<count>%d</count>\n", ccount);
317 wrbuf_puts(c->wrbuf, "</hit>\n");
320 wrbuf_puts(c->wrbuf, "</show>\n");
321 rs->payload = nmem_strdup(c->nmem, wrbuf_buf(c->wrbuf));
322 http_send_response(c);
323 nmem_destroy(nmem_show);
326 static void show_records_ready(void *data)
328 struct http_channel *c = (struct http_channel *) data;
333 static void cmd_show(struct http_channel *c)
335 struct http_request *rq = c->request;
336 struct http_response *rs = c->response;
337 struct http_session *s = locate_session(rq, rs);
338 char *block = http_argbyname(rq, "block");
339 int status = session_active_clients(s->psession);
346 if (status && (!s->psession->reclist || !s->psession->reclist->num_records))
348 session_set_watch(s->psession, SESSION_WATCH_RECORDS, show_records_ready, c);
349 yaz_log(YLOG_DEBUG, "Blocking on cmd_show");
354 show_records(c, status);
357 static void cmd_ping(struct http_channel *c)
359 struct http_request *rq = c->request;
360 struct http_response *rs = c->response;
361 struct http_session *s = locate_session(rq, rs);
364 rs->payload = "<ping><status>OK</status></ping>";
365 http_send_response(c);
368 static void cmd_search(struct http_channel *c)
370 struct http_request *rq = c->request;
371 struct http_response *rs = c->response;
372 struct http_session *s = locate_session(rq, rs);
373 char *query = http_argbyname(rq, "query");
380 error(rs, "417", "Must supply query", 0);
383 res = search(s->psession, query);
386 error(rs, "417", res, res);
389 rs->payload = "<search><status>OK</status></search>";
390 http_send_response(c);
394 static void cmd_stat(struct http_channel *c)
396 struct http_request *rq = c->request;
397 struct http_response *rs = c->response;
398 struct http_session *s = locate_session(rq, rs);
399 struct statistics stat;
400 int clients = session_active_clients(s->psession);
405 statistics(s->psession, &stat);
407 wrbuf_rewind(c->wrbuf);
408 wrbuf_puts(c->wrbuf, "<stat>");
409 wrbuf_printf(c->wrbuf, "<activeclients>%d</activeclients>\n", clients);
410 wrbuf_printf(c->wrbuf, "<hits>%d</hits>\n", stat.num_hits);
411 wrbuf_printf(c->wrbuf, "<records>%d</records>\n", stat.num_records);
412 wrbuf_printf(c->wrbuf, "<clients>%d</clients>\n", stat.num_clients);
413 wrbuf_printf(c->wrbuf, "<unconnected>%d</unconnected>\n", stat.num_no_connection);
414 wrbuf_printf(c->wrbuf, "<connecting>%d</connecting>\n", stat.num_connecting);
415 wrbuf_printf(c->wrbuf, "<initializing>%d</initializing>\n", stat.num_initializing);
416 wrbuf_printf(c->wrbuf, "<searching>%d</searching>\n", stat.num_searching);
417 wrbuf_printf(c->wrbuf, "<presenting>%d</presenting>\n", stat.num_presenting);
418 wrbuf_printf(c->wrbuf, "<idle>%d</idle>\n", stat.num_idle);
419 wrbuf_printf(c->wrbuf, "<failed>%d</failed>\n", stat.num_failed);
420 wrbuf_printf(c->wrbuf, "<error>%d</error>\n", stat.num_error);
421 wrbuf_puts(c->wrbuf, "</stat>");
422 rs->payload = nmem_strdup(c->nmem, wrbuf_buf(c->wrbuf));
423 http_send_response(c);
429 void (*fun)(struct http_channel *c);
431 { "init", cmd_init },
432 { "stat", cmd_stat },
433 { "bytarget", cmd_bytarget },
434 { "show", cmd_show },
435 { "search", cmd_search },
436 { "termlist", cmd_termlist },
437 { "exit", cmd_exit },
438 { "ping", cmd_ping },
442 void http_command(struct http_channel *c)
444 char *command = http_argbyname(c->request, "command");
445 struct http_response *rs = http_create_response(c);
451 error(rs, "417", "Must supply command", 0);
454 for (i = 0; commands[i].name; i++)
455 if (!strcmp(commands[i].name, command))
457 (*commands[i].fun)(c);
460 if (!commands[i].name)
461 error(rs, "417", "Unknown command", 0);
469 * indent-tabs-mode: nil
471 * vim: shiftwidth=4 tabstop=8 expandtab