X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fpazpar2.c;h=84c6d5e5e1a5662d8a9aac932d62862035ed2471;hb=e107b0011a295ccc61502d6e5ea79d9125a3fbb4;hp=860539786508f7de6643501382a9611ea10ffcfd;hpb=be9a2b6fa7b39c27a1d2f44d796041561478c81d;p=pazpar2-moved-to-github.git diff --git a/src/pazpar2.c b/src/pazpar2.c index 8605397..84c6d5e 100644 --- a/src/pazpar2.c +++ b/src/pazpar2.c @@ -1,1436 +1,163 @@ -/* $Id: pazpar2.c,v 1.6 2006-12-27 21:11:10 quinn Exp $ */; +/* This file is part of Pazpar2. + Copyright (C) 2006-2008 Index Data -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "pazpar2.h" -#include "eventl.h" -#include "command.h" -#include "http.h" -#include "termlists.h" -#include "reclists.h" -#include "relevance.h" -#include "config.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); +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->resultSetStartPoint = &start; - a->u.presentRequest->numberOfRecordsRequested = &toget; +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->resultSetId = "Default"; +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - a->u.presentRequest->preferredRecordSyntax = - yaz_oidval_to_z3950oid(global_parameters.odr_out, - CLASS_RECSYN, VAL_USMARC); +*/ - 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 +#include - 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 -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; + start_proxy(); + init_settings(); - yaz_log(YLOG_DEBUG, "Searchresponse (status=%d)", *r->searchStatus); - - 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; - - wrbuf_rewind(s->wrbuf); + yaz_version(yaz_version_str, 0); - 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("f:x:c:h:p:C:s:", argv, argc, &arg)) != -2) - { - switch (ret) { - case 'f': - if (!read_config(arg)) - exit(1); - break; - 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" - " -f configfile\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