-/* $Id: pazpar2.c,v 1.5 2006-12-22 04:43:11 quinn Exp $ */;
+/* $Id: pazpar2.c,v 1.94 2008-02-18 19:33:32 adam Exp $
+ Copyright (c) 2006-2007, Index Data.
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <signal.h>
-#include <ctype.h>
-#include <assert.h>
-
-#include <yaz/comstack.h>
-#include <yaz/tcpip.h>
-#include <yaz/proto.h>
-#include <yaz/readconf.h>
-#include <yaz/pquery.h>
-#include <yaz/yaz-util.h>
-#include <yaz/nmem.h>
-
-#include "pazpar2.h"
-#include "eventl.h"
-#include "command.h"
-#include "http.h"
-#include "termlists.h"
-#include "reclists.h"
-#include "relevance.h"
-
-#define PAZPAR2_VERSION "0.1"
-#define MAX_CHUNK 15
-
-static void client_fatal(struct client *cl);
-static void connection_destroy(struct connection *co);
-static int client_prep_connection(struct client *cl);
-static void ingest_records(struct client *cl, Z_Records *r);
-void session_alert_watch(struct session *s, int what);
-
-IOCHAN channel_list = 0; // Master list of connections we're handling events to
-
-static struct connection *connection_freelist = 0;
-static struct client *client_freelist = 0;
-
-static struct host *hosts = 0; // The hosts we know about
-static struct database *databases = 0; // The databases we know about
-
-static char *client_states[] = {
- "Client_Connecting",
- "Client_Connected",
- "Client_Idle",
- "Client_Initializing",
- "Client_Searching",
- "Client_Presenting",
- "Client_Error",
- "Client_Failed",
- "Client_Disconnected",
- "Client_Stopped"
-};
-
-struct parameters global_parameters =
-{
- 30,
- "81",
- "Index Data PazPar2 (MasterKey)",
- PAZPAR2_VERSION,
- 600, // 10 minutes
- 60,
- 100,
- MAX_CHUNK,
- 0,
- 0,
- 0,
- 0,
- 0
-};
-
-
-static int send_apdu(struct client *c, Z_APDU *a)
-{
- struct connection *co = c->connection;
- char *buf;
- int len, r;
-
- if (!z_APDU(global_parameters.odr_out, &a, 0, 0))
- {
- odr_perror(global_parameters.odr_out, "Encoding APDU");
- abort();
- }
- buf = odr_getbuf(global_parameters.odr_out, &len, 0);
- r = cs_put(co->link, buf, len);
- if (r < 0)
- {
- yaz_log(YLOG_WARN, "cs_put: %s", cs_errmsg(cs_errno(co->link)));
- return -1;
- }
- else if (r == 1)
- {
- fprintf(stderr, "cs_put incomplete (ParaZ does not handle that)\n");
- exit(1);
- }
- odr_reset(global_parameters.odr_out); /* release the APDU structure */
- co->state = Conn_Waiting;
- return 0;
-}
-
-
-static void send_init(IOCHAN i)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
-
- a->u.initRequest->implementationId = global_parameters.implementationId;
- a->u.initRequest->implementationName = global_parameters.implementationName;
- a->u.initRequest->implementationVersion =
- global_parameters.implementationVersion;
- ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
- ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
- ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
-
- ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
- ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
- ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
- if (send_apdu(cl, a) >= 0)
- {
- iochan_setflags(i, EVENT_INPUT);
- cl->state = Client_Initializing;
- }
- else
- cl->state = Client_Error;
- odr_reset(global_parameters.odr_out);
-}
-
-static void send_search(IOCHAN i)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- struct session *se = cl->session;
- struct database *db = cl->database;
- Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
- int ndb, cerror, cpos;
- char **databaselist;
- Z_Query *zquery;
- struct ccl_rpn_node *cn;
- int ssub = 0, lslb = 100000, mspn = 10;
-
- yaz_log(YLOG_DEBUG, "Sending search");
-
- cn = ccl_find_str(global_parameters.ccl_filter, se->query, &cerror, &cpos);
- if (!cn)
- return;
- a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
- sizeof(Z_Query));
- zquery->which = Z_Query_type_1;
- zquery->u.type_1 = ccl_rpn_query(global_parameters.odr_out, cn);
- ccl_rpn_delete(cn);
-
- for (ndb = 0; db->databases[ndb]; ndb++)
- ;
- databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
- for (ndb = 0; db->databases[ndb]; ndb++)
- databaselist[ndb] = db->databases[ndb];
-
- a->u.presentRequest->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(global_parameters.odr_out,
- CLASS_RECSYN, VAL_USMARC);
- a->u.searchRequest->smallSetUpperBound = &ssub;
- a->u.searchRequest->largeSetLowerBound = &lslb;
- a->u.searchRequest->mediumSetPresentNumber = &mspn;
- a->u.searchRequest->resultSetName = "Default";
- a->u.searchRequest->databaseNames = databaselist;
- a->u.searchRequest->num_databaseNames = ndb;
-
- if (send_apdu(cl, a) >= 0)
- {
- iochan_setflags(i, EVENT_INPUT);
- cl->state = Client_Searching;
- cl->requestid = se->requestid;
- }
- else
- cl->state = Client_Error;
-
- odr_reset(global_parameters.odr_out);
-}
-
-static void send_present(IOCHAN i)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
- int toget;
- int start = cl->records + 1;
-
- toget = global_parameters.chunk;
- if (toget > cl->hits - cl->records)
- toget = cl->hits - cl->records;
-
- yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
+This file is part of Pazpar2.
- a->u.presentRequest->resultSetStartPoint = &start;
- a->u.presentRequest->numberOfRecordsRequested = &toget;
+Pazpar2 is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
- a->u.presentRequest->resultSetId = "Default";
+Pazpar2 is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
- a->u.presentRequest->preferredRecordSyntax =
- yaz_oidval_to_z3950oid(global_parameters.odr_out,
- CLASS_RECSYN, VAL_USMARC);
+You should have received a copy of the GNU General Public License
+along with Pazpar2; see the file LICENSE. If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+ */
- if (send_apdu(cl, a) >= 0)
- {
- iochan_setflags(i, EVENT_INPUT);
- cl->state = Client_Presenting;
- }
- else
- cl->state = Client_Error;
- odr_reset(global_parameters.odr_out);
-}
+#if HAVE_CONFIG_H
+#include "cconfig.h"
+#endif
-static void do_initResponse(IOCHAN i, Z_APDU *a)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- Z_InitResponse *r = a->u.initResponse;
- yaz_log(YLOG_DEBUG, "Received init response");
+#include <signal.h>
+#include <assert.h>
- if (*r->result)
- {
- cl->state = Client_Idle;
- }
- else
- cl->state = Client_Failed; // FIXME need to do something to the connection
-}
+#include "pazpar2.h"
+#include "database.h"
+#include "settings.h"
+#include <yaz/daemon.h>
-static void do_searchResponse(IOCHAN i, Z_APDU *a)
+void child_handler(void *data)
{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- struct session *se = cl->session;
- Z_SearchResponse *r = a->u.searchResponse;
-
- yaz_log(YLOG_DEBUG, "Searchresponse (status=%d)", *r->searchStatus);
+ start_proxy();
+ init_settings();
- if (*r->searchStatus)
- {
- cl->hits = *r->resultCount;
- se->total_hits += cl->hits;
- if (r->presentStatus && !*r->presentStatus && r->records)
- {
- yaz_log(YLOG_DEBUG, "Records in search response");
- cl->records += *r->numberOfRecordsReturned;
- ingest_records(cl, r->records);
- }
- cl->state = Client_Idle;
- }
+ if (*global_parameters.settings_path_override)
+ settings_read(global_parameters.settings_path_override);
+ else if (global_parameters.server->settings)
+ settings_read(global_parameters.server->settings);
else
- { /*"FAILED"*/
- cl->hits = 0;
- cl->state = Client_Error;
- if (r->records) {
- Z_Records *recs = r->records;
- if (recs->which == Z_Records_NSD)
- {
- yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
- cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
- cl->state = Client_Error;
- }
- }
- }
-}
+ yaz_log(YLOG_WARN, "No settings-directory specified");
+ global_parameters.odr_in = odr_createmem(ODR_DECODE);
+ global_parameters.odr_out = odr_createmem(ODR_ENCODE);
-const char *find_field(const char *rec, const char *field)
-{
- char lbuf[5];
- char *line;
- lbuf[0] = '\n';
- strcpy(lbuf + 1, field);
+ pazpar2_event_loop();
- if ((line = strstr(rec, lbuf)))
- return ++line;
- else
- return 0;
}
-const char *find_subfield(const char *field, char subfield)
+static void show_version(void)
{
- const char *p = field;
+ char yaz_version_str[80];
+ printf("Pazpar2 " VERSION "\n");
- while (*p && *p != '\n')
- {
- while (*p != '\n' && *p != '\t')
- p++;
- if (*p == '\t' && *(++p) == subfield) {
- if (*(++p) == ' ')
- {
- while (isspace(*p))
- p++;
- return p;
- }
- }
- }
- return 0;
-}
-
-// Extract 245 $a $b 100 $a
-char *extract_title(struct session *s, const char *rec)
-{
- const char *field, *subfield;
- char *e, *ef;
- unsigned char *obuf, *p;
+ yaz_version(yaz_version_str, 0);
- wrbuf_rewind(s->wrbuf);
-
- if (!(field = find_field(rec, "245")))
- return 0;
- if (!(subfield = find_subfield(field, 'a')))
- return 0;
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- if ((subfield = find_subfield(field, 'b')))
- {
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_putc(s->wrbuf, ' ');
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- }
- }
- }
- if ((field = find_field(rec, "100")))
- {
- if ((subfield = find_subfield(field, 'a')))
- {
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_puts(s->wrbuf, ", by ");
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- }
- }
- }
- wrbuf_putc(s->wrbuf, '\0');
- obuf = (unsigned char*) nmem_strdup(s->nmem, wrbuf_buf(s->wrbuf));
- for (p = obuf; *p; p++)
- if (*p == '&' || *p == '<' || *p > 122 || *p < ' ')
- *p = ' ';
- return (char*) obuf;
-}
+ printf("Configuration:");
+#if HAVE_ICU
+ printf(" icu:?");
+#endif
+ printf(" yaz:%s", yaz_version_str);
+ printf("\n");
+ exit(0);
+}
-// Extract 245 $a $b 100 $a
-char *extract_mergekey(struct session *s, const char *rec)
+int main(int argc, char **argv)
{
- const char *field, *subfield;
- char *e, *ef;
- char *out, *p, *pout;
-
- wrbuf_rewind(s->wrbuf);
-
- if (!(field = find_field(rec, "245")))
- return 0;
- if (!(subfield = find_subfield(field, 'a')))
- return 0;
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- if ((subfield = find_subfield(field, 'b')))
- {
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_puts(s->wrbuf, " field ");
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- }
- }
- }
- if ((field = find_field(rec, "100")))
- {
- if ((subfield = find_subfield(field, 'a')))
- {
- ef = index(subfield, '\n');
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- if (ef)
- {
- wrbuf_puts(s->wrbuf, " field ");
- wrbuf_write(s->wrbuf, subfield, ef - subfield);
- }
- }
- }
- wrbuf_putc(s->wrbuf, '\0');
- p = wrbuf_buf(s->wrbuf);
- out = pout = nmem_malloc(s->nmem, strlen(p) + 1);
-
- while (*p)
- {
- while (isalnum(*p))
- *(pout++) = tolower(*(p++));
- while (*p && !isalnum(*p))
- p++;
- *(pout++) = ' ';
- }
- if (out != pout)
- *(--pout) = '\0';
+ int daemon = 0;
+ int ret;
+ int log_file_in_use = 0;
+ char *arg;
+ const char *pidfile = 0;
+ const char *uid = 0;
- return out;
-}
+ if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
+ yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
-#ifdef RECHEAP
-static void push_record(struct session *s, struct record *r)
-{
- int p;
- assert(s->recheap_max + 1 < s->recheap_size);
+ yaz_log_init_prefix("pazpar2");
+#if YAZ_VERSIONL >= 0x03001B
+ yaz_log_xml_errors(0, YLOG_WARN);
+#endif
- s->recheap[p = ++s->recheap_max] = r;
- while (p > 0)
+ while ((ret = options("dDf:h:l:p:t:u:VX", argv, argc, &arg)) != -2)
{
- int parent = (p - 1) >> 1;
- if (strcmp(s->recheap[p]->merge_key, s->recheap[parent]->merge_key) < 0)
+ switch (ret)
{
- struct record *tmp;
- tmp = s->recheap[parent];
- s->recheap[parent] = s->recheap[p];
- s->recheap[p] = tmp;
- p = parent;
- }
- else
+ case 'd':
+ global_parameters.dump_records = 1;
break;
- }
-}
-
-static struct record *top_record(struct session *s)
-{
- return s-> recheap_max >= 0 ? s->recheap[0] : 0;
-}
-
-static struct record *pop_record(struct session *s)
-{
- struct record *res;
- int p = 0;
- int lastnonleaf = (s->recheap_max - 1) >> 1;
-
- if (s->recheap_max < 0)
- return 0;
-
- res = s->recheap[0];
-
- s->recheap[p] = s->recheap[s->recheap_max--];
-
- while (p <= lastnonleaf)
- {
- int right = (p + 1) << 1;
- int left = right - 1;
- int min = left;
-
- if (right < s->recheap_max &&
- strcmp(s->recheap[right]->merge_key, s->recheap[left]->merge_key) < 0)
- min = right;
- if (strcmp(s->recheap[min]->merge_key, s->recheap[p]->merge_key) < 0)
- {
- struct record *tmp = s->recheap[min];
- s->recheap[min] = s->recheap[p];
- s->recheap[p] = tmp;
- p = min;
- }
- else
+ case 'D':
+ daemon = 1;
break;
- }
- return res;
-}
-
-// Like pop_record but collapses identical (merge_key) records
-// The heap will contain multiple independent matching records and possibly
-// one cluster, created the last time the list was scanned
-static struct record *pop_mrecord(struct session *s)
-{
- struct record *this;
- struct record *next;
-
- if (!(this = pop_record(s)))
- return 0;
-
- // Collapse identical records
- while ((next = top_record(s)))
- {
- struct record *p, *tmpnext;
- if (strcmp(this->merge_key, next->merge_key))
+ case 'f':
+ if (!read_config(arg))
+ exit(1);
break;
- // Absorb record (and clustersiblings) into a supercluster
- for (p = next; p; p = tmpnext) {
- tmpnext = p->next_cluster;
- p->next_cluster = this->next_cluster;
- this->next_cluster = p;
- }
-
- pop_record(s);
- }
- return this;
-}
-
-// Reads records in sort order. Store records in top of heapspace until rewind is called.
-static struct record *read_recheap(struct session *s)
-{
- struct record *r = pop_mrecord(s);
-
- if (r)
- {
- if (s->recheap_scratch < 0)
- s->recheap_scratch = s->recheap_size;
- s->recheap[--s->recheap_scratch] = r;
- }
-
- return r;
-}
-
-// Return records to heap after read
-static void rewind_recheap(struct session *s)
-{
- while (s->recheap_scratch >= 0) {
- push_record(s, s->recheap[s->recheap_scratch++]);
- if (s->recheap_scratch >= s->recheap_size)
- s->recheap_scratch = -1;
- }
-}
-
-#endif
-
-// FIXME needs to be generalized. Should flexibly generate X lists per search
-static void extract_subject(struct session *s, const char *rec)
-{
- const char *field, *subfield;
-
- while ((field = find_field(rec, "650")))
- {
- rec = field;
- if ((subfield = find_subfield(field, 'a')))
- {
- char *e, *ef;
- char buf[1024];
- int len;
-
- ef = index(subfield, '\n');
- if (!ef)
- return;
- if ((e = index(subfield, '\t')) && e < ef)
- ef = e;
- while (ef > subfield && !isalpha(*(ef - 1)) && *(ef - 1) != ')')
- ef--;
- len = ef - subfield;
- assert(len < 1023);
- memcpy(buf, subfield, len);
- buf[len] = '\0';
- if (*buf)
- termlist_insert(s->termlist, buf);
- }
- }
-}
-
-static void pull_relevance_field(struct session *s, struct record *head, const char *rec,
- char *field, int mult)
-{
- const char *fb;
- while ((fb = find_field(rec, field)))
- {
- char *ffield = strchr(fb, '\t');
- if (!ffield)
- return;
- char *eol = strchr(ffield, '\n');
- if (!eol)
- return;
- relevance_countwords(s->relevance, head, ffield, eol - ffield, mult);
- rec = field + 1; // Crude way to cause a loop through repeating fields
- }
-}
-
-static void pull_relevance_keys(struct session *s, struct record *head, struct record *rec)
-{
- relevance_newrec(s->relevance, head);
- pull_relevance_field(s, head, rec->buf, "100", 2);
- pull_relevance_field(s, head, rec->buf, "245", 4);
- //pull_relevance_field(s, head, rec->buf, "530", 1);
- pull_relevance_field(s, head, rec->buf, "630", 1);
- pull_relevance_field(s, head, rec->buf, "650", 1);
- pull_relevance_field(s, head, rec->buf, "700", 1);
- relevance_donerecord(s->relevance, head);
-}
-
-static struct record *ingest_record(struct client *cl, char *buf, int len)
-{
- struct session *se = cl->session;
- struct record *res;
- struct record *head;
- const char *recbuf;
-
- wrbuf_rewind(se->wrbuf);
- yaz_marc_xml(global_parameters.yaz_marc, YAZ_MARC_LINE);
- if (yaz_marc_decode_wrbuf(global_parameters.yaz_marc, buf, len, se->wrbuf) < 0)
- {
- yaz_log(YLOG_WARN, "Failed to decode MARC record");
- return 0;
- }
- wrbuf_putc(se->wrbuf, '\0');
- recbuf = wrbuf_buf(se->wrbuf);
-
- res = nmem_malloc(se->nmem, sizeof(struct record));
- res->buf = nmem_strdup(se->nmem, recbuf);
-
- extract_subject(se, res->buf);
-
- res->title = extract_title(se, res->buf);
- res->merge_key = extract_mergekey(se, res->buf);
- if (!res->merge_key)
- return 0;
- res->client = cl;
- res->next_cluster = 0;
- res->target_offset = -1;
- res->term_frequency_vec = 0;
-
- head = reclist_insert(se->reclist, res);
-
- pull_relevance_keys(se, head, res);
-
- se->total_records++;
-
- return res;
-}
-
-static void ingest_records(struct client *cl, Z_Records *r)
-{
- struct record *rec;
- struct session *s = cl->session;
- Z_NamePlusRecordList *rlist;
- int i;
-
- if (r->which != Z_Records_DBOSD)
- return;
- rlist = r->u.databaseOrSurDiagnostics;
- for (i = 0; i < rlist->num_records; i++)
- {
- Z_NamePlusRecord *npr = rlist->records[i];
- Z_External *e;
- char *buf;
- int len;
-
- if (npr->which != Z_NamePlusRecord_databaseRecord)
- {
- yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
- continue;
- }
- e = npr->u.databaseRecord;
- if (e->which != Z_External_octet)
- {
- yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
- continue;
- }
- buf = (char*) e->u.octet_aligned->buf;
- len = e->u.octet_aligned->len;
-
- rec = ingest_record(cl, buf, len);
- if (!rec)
- continue;
- }
- if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
- session_alert_watch(s, SESSION_WATCH_RECORDS);
-}
-
-xsltStylesheetPtr load_stylesheet(const char *fname)
-{
- xsltStylesheetPtr ret;
- if (!(ret = xsltParseStylesheetFile((const xmlChar *) fname)))
- {
- yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to load stylesheet %s", fname);
- exit(1);
- }
- return ret;
-}
-
-static void do_presentResponse(IOCHAN i, Z_APDU *a)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- Z_PresentResponse *r = a->u.presentResponse;
-
- if (r->records) {
- Z_Records *recs = r->records;
- if (recs->which == Z_Records_NSD)
- {
- yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
- cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
- cl->state = Client_Error;
- }
- }
-
- if (!*r->presentStatus && cl->state != Client_Error)
- {
- yaz_log(YLOG_DEBUG, "Good Present response");
- cl->records += *r->numberOfRecordsReturned;
- ingest_records(cl, r->records);
- cl->state = Client_Idle;
- }
- else if (*r->presentStatus)
- {
- yaz_log(YLOG_WARN, "Bad Present response");
- cl->state = Client_Error;
- }
-}
-
-static void handler(IOCHAN i, int event)
-{
- struct connection *co = iochan_getdata(i);
- struct client *cl = co->client;
- struct session *se = 0;
-
- if (cl)
- se = cl->session;
- else
- {
- yaz_log(YLOG_WARN, "Destroying orphan connection");
- connection_destroy(co);
- return;
- }
-
- if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
- {
- int errcode;
- socklen_t errlen = sizeof(errcode);
-
- if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
- &errlen) < 0 || errcode != 0)
- {
- client_fatal(cl);
- return;
- }
- else
- {
- yaz_log(YLOG_DEBUG, "Connect OK");
- co->state = Conn_Open;
- if (cl)
- cl->state = Client_Connected;
- }
- }
-
- else if (event & EVENT_INPUT)
- {
- int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
-
- if (len < 0)
- {
- yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
- connection_destroy(co);
- return;
- }
- else if (len == 0)
- {
- yaz_log(YLOG_WARN, "EOF reading from Z server");
- connection_destroy(co);
- return;
- }
- else if (len > 1) // We discard input if we have no connection
- {
- co->state = Conn_Open;
-
- if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
- {
- Z_APDU *a;
-
- odr_reset(global_parameters.odr_in);
- odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
- if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
- {
- client_fatal(cl);
- return;
- }
- switch (a->which)
- {
- case Z_APDU_initResponse:
- do_initResponse(i, a);
- break;
- case Z_APDU_searchResponse:
- do_searchResponse(i, a);
- break;
- case Z_APDU_presentResponse:
- do_presentResponse(i, a);
- break;
- default:
- yaz_log(YLOG_WARN, "Unexpected result from server");
- client_fatal(cl);
- return;
- }
- // We aren't expecting staggered output from target
- // if (cs_more(t->link))
- // iochan_setevent(i, EVENT_INPUT);
- }
- else // we throw away response and go to idle mode
- {
- yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
- cl->state = Client_Idle;
- }
- }
- /* if len==1 we do nothing but wait for more input */
- }
-
- if (cl->state == Client_Connected) {
- send_init(i);
- }
-
- if (cl->state == Client_Idle)
- {
- if (cl->requestid != se->requestid && *se->query) {
- send_search(i);
- }
- else if (cl->hits > 0 && cl->records < global_parameters.toget &&
- cl->records < cl->hits) {
- send_present(i);
- }
- }
-}
-
-// Disassociate connection from client
-static void connection_release(struct connection *co)
-{
- struct client *cl = co->client;
-
- yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
- if (!cl)
- return;
- cl->connection = 0;
- co->client = 0;
-}
-
-// Close connection and recycle structure
-static void connection_destroy(struct connection *co)
-{
- struct host *h = co->host;
- cs_close(co->link);
- iochan_destroy(co->iochan);
-
- yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
- if (h->connections == co)
- h->connections = co->next;
- else
- {
- struct connection *pco;
- for (pco = h->connections; pco && pco->next != co; pco = pco->next)
- ;
- if (pco)
- pco->next = co->next;
- else
- abort();
- }
- if (co->client)
- {
- if (co->client->state != Client_Idle)
- co->client->state = Client_Disconnected;
- co->client->connection = 0;
- }
- co->next = connection_freelist;
- connection_freelist = co;
-}
-
-// Creates a new connection for client, associated with the host of
-// client's database
-static struct connection *connection_create(struct client *cl)
-{
- struct connection *new;
- COMSTACK link;
- int res;
- void *addr;
-
- yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
- if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
- {
- yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
- exit(1);
- }
-
- if (!(addr = cs_straddr(link, cl->database->host->ipport)))
- {
- yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address failed?");
- return 0;
- }
-
- res = cs_connect(link, addr);
- if (res < 0)
- {
- yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
- return 0;
- }
-
- if ((new = connection_freelist))
- connection_freelist = new->next;
- else
- {
- new = xmalloc(sizeof (struct connection));
- new->ibuf = 0;
- new->ibufsize = 0;
- }
- new->state = Conn_Connecting;
- new->host = cl->database->host;
- new->next = new->host->connections;
- new->host->connections = new;
- new->client = cl;
- cl->connection = new;
- new->link = link;
-
- new->iochan = iochan_create(cs_fileno(link), handler, 0);
- iochan_setdata(new->iochan, new);
- new->iochan->next = channel_list;
- channel_list = new->iochan;
- return new;
-}
-
-// Close connection and set state to error
-static void client_fatal(struct client *cl)
-{
- yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
- connection_destroy(cl->connection);
- cl->state = Client_Error;
-}
-
-// Ensure that client has a connection associated
-static int client_prep_connection(struct client *cl)
-{
- struct connection *co;
- struct session *se = cl->session;
- struct host *host = cl->database->host;
-
- co = cl->connection;
-
- yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
-
- if (!co)
- {
- // See if someone else has an idle connection
- // We should look at timestamps here to select the longest-idle connection
- for (co = host->connections; co; co = co->next)
- if (co->state == Conn_Open && (!co->client || co->client->session != se))
- break;
- if (co)
- {
- connection_release(co);
- cl->connection = co;
- co->client = cl;
- }
- else
- co = connection_create(cl);
- }
- if (co)
- {
- if (co->state == Conn_Connecting)
- cl->state = Client_Connecting;
- else if (co->state == Conn_Open)
- {
- if (cl->state == Client_Error || cl->state == Client_Disconnected)
- cl->state = Client_Idle;
- }
- iochan_setflag(co->iochan, EVENT_OUTPUT);
- return 1;
- }
- else
- return 0;
-}
-
-void load_simpletargets(const char *fn)
-{
- FILE *f = fopen(fn, "r");
- char line[256];
-
- if (!f)
- {
- yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
- exit(1);
- }
-
- while (fgets(line, 255, f))
- {
- char *url, *db;
- struct host *host;
- struct database *database;
-
- if (strncmp(line, "target ", 7))
- continue;
- url = line + 7;
- url[strlen(url) - 1] = '\0';
- yaz_log(YLOG_DEBUG, "Target: %s", url);
- if ((db = strchr(url, '/')))
- *(db++) = '\0';
- else
- db = "Default";
-
- for (host = hosts; host; host = host->next)
- if (!strcmp(url, host->hostport))
- break;
- if (!host)
- {
- struct addrinfo *addrinfo, hints;
- char *port;
- char ipport[128];
- unsigned char addrbuf[4];
- int res;
-
- host = xmalloc(sizeof(struct host));
- host->hostport = xstrdup(url);
- host->connections = 0;
-
- if ((port = strchr(url, ':')))
- *(port++) = '\0';
- else
- port = "210";
-
- hints.ai_flags = 0;
- hints.ai_family = PF_INET;
- hints.ai_socktype = SOCK_STREAM;
- hints.ai_protocol = IPPROTO_TCP;
- hints.ai_addrlen = 0;
- hints.ai_addr = 0;
- hints.ai_canonname = 0;
- hints.ai_next = 0;
- // This is not robust code. It assumes that getaddrinfo returns AF_INET
- // address.
- if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
- {
- yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
- xfree(host->hostport);
- xfree(host);
- continue;
- }
- assert(addrinfo->ai_family == PF_INET);
- memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
- sprintf(ipport, "%hhd.%hhd.%hhd.%hhd:%s",
- addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
- host->ipport = xstrdup(ipport);
- freeaddrinfo(addrinfo);
- host->next = hosts;
- hosts = host;
- }
- database = xmalloc(sizeof(struct database));
- database->host = host;
- database->url = xmalloc(strlen(url) + strlen(db) + 2);
- strcpy(database->url, url);
- strcat(database->url, "/");
- strcat(database->url, db);
-
- database->databases = xmalloc(2 * sizeof(char *));
- database->databases[0] = xstrdup(db);
- database->databases[1] = 0;
- database->errors = 0;
- database->next = databases;
- databases = database;
-
- }
- fclose(f);
-}
-
-static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
-{
- switch (n->kind)
- {
- case CCL_RPN_AND:
- case CCL_RPN_OR:
- case CCL_RPN_NOT:
- case CCL_RPN_PROX:
- pull_terms(nmem, n->u.p[0], termlist, num);
- pull_terms(nmem, n->u.p[1], termlist, num);
+ case 'h':
+ strcpy(global_parameters.listener_override, arg);
break;
- case CCL_RPN_TERM:
- termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
+ case 'l':
+ yaz_log_init_file(arg);
+ log_file_in_use = 1;
break;
- default: // NOOP
+ case 'p':
+ pidfile = arg;
break;
- }
-}
-
-// Extract terms from query into null-terminated termlist
-static int extract_terms(NMEM nmem, char *query, char **termlist)
-{
- int error, pos;
- struct ccl_rpn_node *n;
- int num = 0;
-
- n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
- if (!n)
- return -1;
- pull_terms(nmem, n, termlist, &num);
- termlist[num] = 0;
- ccl_rpn_delete(n);
- return 0;
-}
-
-static struct client *client_create(void)
-{
- struct client *r;
- if (client_freelist)
- {
- r = client_freelist;
- client_freelist = client_freelist->next;
- }
- else
- r = xmalloc(sizeof(struct client));
- r->database = 0;
- r->connection = 0;
- r->session = 0;
- r->hits = 0;
- r->records = 0;
- r->setno = 0;
- r->requestid = -1;
- r->diagnostic = 0;
- r->state = Client_Disconnected;
- r->next = 0;
- return r;
-}
-
-void client_destroy(struct client *c)
-{
- struct session *se = c->session;
- if (c == se->clients)
- se->clients = c->next;
- else
- {
- struct client *cc;
- for (cc = se->clients; cc && cc->next != c; cc = cc->next)
- ;
- if (cc)
- cc->next = c->next;
- }
- if (c->connection)
- connection_release(c->connection);
- c->next = client_freelist;
- client_freelist = c;
-}
-
-void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
-{
- s->watchlist[what].fun = fun;
- s->watchlist[what].data = data;
-}
-
-void session_alert_watch(struct session *s, int what)
-{
- if (!s->watchlist[what].fun)
- return;
- (*s->watchlist[what].fun)(s->watchlist[what].data);
- s->watchlist[what].fun = 0;
- s->watchlist[what].data = 0;
-}
-
-// This should be extended with parameters to control selection criteria
-// Associates a set of clients with a session;
-int select_targets(struct session *se)
-{
- struct database *db;
- int c = 0;
-
- while (se->clients)
- client_destroy(se->clients);
- for (db = databases; db; db = db->next)
- {
- struct client *cl = client_create();
- cl->database = db;
- cl->session = se;
- cl->next = se->clients;
- se->clients = cl;
- c++;
- }
- return c;
-}
-
-char *search(struct session *se, char *query)
-{
- int live_channels = 0;
- struct client *cl;
-
- yaz_log(YLOG_DEBUG, "Search");
-
- strcpy(se->query, query);
- se->requestid++;
- nmem_reset(se->nmem);
- for (cl = se->clients; cl; cl = cl->next)
- {
- cl->hits = -1;
- cl->records = 0;
- cl->diagnostic = 0;
-
- if (client_prep_connection(cl))
- live_channels++;
- }
- if (live_channels)
- {
- char *p[512];
- int maxrecs = live_channels * global_parameters.toget;
- se->termlist = termlist_create(se->nmem, maxrecs, 15);
- se->reclist = reclist_create(se->nmem, maxrecs);
- extract_terms(se->nmem, query, p);
- se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
- se->total_records = se->total_hits = 0;
- }
- else
- return "NOTARGETS";
-
- return 0;
-}
-
-void destroy_session(struct session *s)
-{
- yaz_log(YLOG_LOG, "Destroying session");
- while (s->clients)
- client_destroy(s->clients);
- nmem_destroy(s->nmem);
- wrbuf_free(s->wrbuf, 1);
-}
-
-struct session *new_session()
-{
- int i;
- struct session *session = xmalloc(sizeof(*session));
-
- yaz_log(YLOG_DEBUG, "New pazpar2 session");
-
- session->total_hits = 0;
- session->total_records = 0;
- session->termlist = 0;
- session->reclist = 0;
- session->requestid = -1;
- session->clients = 0;
- session->query[0] = '\0';
- session->nmem = nmem_create();
- session->wrbuf = wrbuf_alloc();
- for (i = 0; i <= SESSION_WATCH_MAX; i++)
- {
- session->watchlist[i].data = 0;
- session->watchlist[i].fun = 0;
- }
-
- select_targets(session);
-
- return session;
-}
-
-struct hitsbytarget *hitsbytarget(struct session *se, int *count)
-{
- static struct hitsbytarget res[1000]; // FIXME MM
- struct client *cl;
-
- *count = 0;
- for (cl = se->clients; cl; cl = cl->next)
- {
- strcpy(res[*count].id, cl->database->host->hostport);
- res[*count].hits = cl->hits;
- res[*count].records = cl->records;
- res[*count].diagnostic = cl->diagnostic;
- res[*count].state = client_states[cl->state];
- res[*count].connected = cl->connection ? 1 : 0;
- (*count)++;
- }
-
- return res;
-}
-
-struct termlist_score **termlist(struct session *s, int *num)
-{
- return termlist_highscore(s->termlist, num);
-}
-
-#ifdef REPORT_NMEM
-// conditional compilation by SH: This lead to a warning with currently installed
-// YAZ header files on us1
-void report_nmem_stats(void)
-{
- size_t in_use, is_free;
-
- nmem_get_memory_in_use(&in_use);
- nmem_get_memory_free(&is_free);
-
- yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
- (long) in_use, (long) is_free);
-}
-#endif
-
-struct record **show(struct session *s, int start, int *num, int *total,
- int *sumhits, NMEM nmem_show)
-{
- struct record **recs = nmem_malloc(nmem_show, *num
- * sizeof(struct record *));
- int i;
-
- relevance_prepare_read(s->relevance, s->reclist);
-
- *total = s->reclist->num_records;
- *sumhits = s->total_hits;
-
- for (i = 0; i < start; i++)
- if (!reclist_read_record(s->reclist))
- {
- *num = 0;
- return 0;
- }
-
- for (i = 0; i < *num; i++)
- {
- struct record *r = reclist_read_record(s->reclist);
- if (!r)
- {
- *num = i;
+ case 't':
+ strcpy(global_parameters.settings_path_override, arg);
break;
- }
- recs[i] = r;
- }
- return recs;
-}
-
-void statistics(struct session *se, struct statistics *stat)
-{
- struct client *cl;
- int count = 0;
-
- bzero(stat, sizeof(*stat));
- for (cl = se->clients; cl; cl = cl->next)
- {
- if (!cl->connection)
- stat->num_no_connection++;
- switch (cl->state)
- {
- case Client_Connecting: stat->num_connecting++; break;
- case Client_Initializing: stat->num_initializing++; break;
- case Client_Searching: stat->num_searching++; break;
- case Client_Presenting: stat->num_presenting++; break;
- case Client_Idle: stat->num_idle++; break;
- case Client_Failed: stat->num_failed++; break;
- case Client_Error: stat->num_error++; break;
- default: break;
- }
- count++;
+ case 'u':
+ uid = arg;
+ break;
+ case 'V':
+ show_version();
+ case 'X':
+ global_parameters.debug_mode = 1;
+ break;
+ default:
+ fprintf(stderr, "Usage: pazpar2\n"
+ " -d (show internal records)\n"
+ " -D Daemon mode (background)\n"
+ " -f configfile\n"
+ " -h [host:]port (REST protocol listener)\n"
+ " -l file log to file\n"
+ " -p pidfile PID file\n"
+ " -t settings\n"
+ " -u uid\n"
+ " -V show version\n"
+ " -X debug mode\n"
+ );
+ exit(1);
+ }
}
- stat->num_hits = se->total_hits;
- stat->num_records = se->total_records;
- stat->num_clients = count;
-}
-
-static CCL_bibset load_cclfile(const char *fn)
-{
- CCL_bibset res = ccl_qual_mk();
- if (ccl_qual_fname(res, fn) < 0)
+ yaz_log(YLOG_LOG, "Pazpar2 %s started", VERSION);
+ if (daemon && !log_file_in_use)
{
- yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
+ yaz_log(YLOG_FATAL, "Logfile must be given (option -l) for daemon "
+ "mode");
exit(1);
}
- return res;
-}
-
-int main(int argc, char **argv)
-{
- int ret;
- char *arg;
- int setport = 0;
-
- if (signal(SIGPIPE, SIG_IGN) < 0)
- yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
-
- yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
-
- while ((ret = options("x:c:h:p:C:s:", argv, argc, &arg)) != -2)
- {
- switch (ret) {
- case 'c':
- command_init(atoi(arg));
- setport++;
- break;
- case 'h':
- http_init(arg);
- setport++;
- break;
- case 'C':
- global_parameters.ccl_filter = load_cclfile(arg);
- break;
- case 'p':
- http_set_proxyaddr(arg);
- break;
- case 's':
- load_simpletargets(arg);
- break;
- case 'x':
- global_parameters.xsl = load_stylesheet(arg);
- break;
- default:
- fprintf(stderr, "Usage: pazpar2\n"
- " -h [host:]port (REST protocol listener)\n"
- " -c cmdport (telnet-style)\n"
- " -C cclconfig\n"
- " -s simpletargetfile\n"
- " -p hostname[:portno] (HTTP proxy)\n");
- exit(1);
- }
- }
-
- if (!setport)
+ if (!config)
{
- fprintf(stderr, "Set command port with -h or -c\n");
+ yaz_log(YLOG_FATAL, "Load config with -f");
exit(1);
}
+ global_parameters.server = config->servers;
- if (!global_parameters.xsl)
- global_parameters.xsl = load_stylesheet("../etc/default.xsl");
- global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
- global_parameters.yaz_marc = yaz_marc_create();
- yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
- global_parameters.odr_in = odr_createmem(ODR_DECODE);
- global_parameters.odr_out = odr_createmem(ODR_ENCODE);
-
- event_loop(&channel_list);
-
+ start_http_listener();
+ yaz_daemon("pazpar2",
+ (global_parameters.debug_mode ? YAZ_DAEMON_DEBUG : 0) +
+ (daemon ? YAZ_DAEMON_FORK : 0) + YAZ_DAEMON_KEEPALIVE,
+ child_handler, 0 /* child_data */,
+ pidfile, uid);
return 0;
}
+
/*
* Local variables:
* c-basic-offset: 4
projects / pazpar2-moved-to-github.git / blobdiff