Happy new year
[pazpar2-moved-to-github.git] / src / pazpar2.c
index 99cc6a7..0db4a4f 100644 (file)
@@ -1,7 +1,5 @@
-/* $Id: pazpar2.c,v 1.78 2007-04-13 11:13:08 marc Exp $
-   Copyright (c) 2006-2007, Index Data.
-
-This file is part of Pazpar2.
+/* This file is part of Pazpar2.
+   Copyright (C) Index Data
 
 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
@@ -14,1797 +12,293 @@ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 for more details.
 
 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.
- */
-
-#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>
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
-#include <yaz/marcdisp.h>
-#include <yaz/comstack.h>
-#include <yaz/tcpip.h>
-#include <yaz/proto.h>
-#include <yaz/readconf.h>
-#include <yaz/pquery.h>
-#include <yaz/otherinfo.h>
-#include <yaz/yaz-util.h>
-#include <yaz/nmem.h>
-#include <yaz/query-charset.h>
-#include <yaz/querytowrbuf.h>
-#if YAZ_VERSIONL >= 0x020163
-#include <yaz/oid_db.h>
-#endif
+*/
 
 #if HAVE_CONFIG_H
-#include "cconfig.h"
+#include <config.h>
 #endif
-
-#define USE_TIMING 0
-#if USE_TIMING
-#include <yaz/timing.h>
+#ifdef WIN32
+#include <winsock.h>
+#include <direct.h>
+#endif
+#if HAVE_UNISTD_H
+#include <unistd.h>
 #endif
 
-#include <netinet/in.h>
-
-#include "pazpar2.h"
-#include "eventl.h"
-#include "http.h"
-#include "termlists.h"
-#include "reclists.h"
-#include "relevance.h"
-#include "config.h"
-#include "database.h"
-#include "settings.h"
-
-#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;
+#include <signal.h>
+#include <assert.h>
 
-static char *client_states[] = {
-    "Client_Connecting",
-    "Client_Connected",
-    "Client_Idle",
-    "Client_Initializing",
-    "Client_Searching",
-    "Client_Presenting",
-    "Client_Error",
-    "Client_Failed",
-    "Client_Disconnected",
-    "Client_Stopped"
-};
+#include "parameters.h"
+#include "session.h"
+#include "ppmutex.h"
+#include <yaz/daemon.h>
+#include <yaz/log.h>
+#include <yaz/options.h>
+#include <yaz/sc.h>
+#include <yaz/backtrace.h>
+
+// #define MTRACE
+#ifdef MTRACE
+#include <mcheck.h>
+#endif
 
-// Note: Some things in this structure will eventually move to configuration
-struct parameters global_parameters = 
-{
-    "",
-    "",
-    "",
-    "",
-    0,
-    0,
-    30,
-    "81",
-    "Index Data PazPar2 (MasterKey)",
-    VERSION,
-    600, // 10 minutes
-    60,
-    100,
-    MAX_CHUNK,
-    0,
-    0
-};
+static struct conf_config *sc_stop_config = 0;
 
-static int send_apdu(struct client *c, Z_APDU *a)
+void child_handler(void *data)
 {
-    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;
-}
+    struct conf_config *config = (struct conf_config *) data;
 
-// Set authentication token in init if one is set for the client
-// TODO: Extend this to handle other schemes than open (should be simple)
-static void init_authentication(struct client *cl, Z_InitRequest *req)
-{
-    struct session_database *sdb = cl->database;
-    char *auth = session_setting_oneval(sdb, PZ_AUTHENTICATION);
+    config_process_events(config);
 
-    if (auth)
-    {
-        Z_IdAuthentication *idAuth = odr_malloc(global_parameters.odr_out,
-                sizeof(*idAuth));
-        idAuth->which = Z_IdAuthentication_open;
-        idAuth->u.open = auth;
-        req->idAuthentication = idAuth;
-    }
+    config_destroy(config);
 }
 
-static void send_init(IOCHAN i)
+static void show_version(void)
 {
+    char yaz_version_str[20];
+    printf("Pazpar2 " PACKAGE_VERSION
+#ifdef PAZPAR2_VERSION_SHA1
+           " "
+           PAZPAR2_VERSION_SHA1
+#endif
+"\n");
 
-    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);
-
-    init_authentication(cl, a->u.initRequest);
+    yaz_version(yaz_version_str, 0);
 
-    /* add virtual host if tunneling through Z39.50 proxy */
-    
-    if (0 < strlen(global_parameters.zproxy_override) 
-        && 0 < strlen(cl->database->database->url))
-    {
-#if YAZ_VERSIONL >= 0x020163
-        const int *oid_proxy = yaz_string_to_oid(yaz_oid_std(),
-                                                 CLASS_USERINFO, OID_STR_PROXY);
-        yaz_oi_set_string_oid(&a->u.initRequest->otherInfo,
-                              global_parameters.odr_out, oid_proxy,
-                              1, cl->database->database->url);
+    printf("Configuration:");
+#if YAZ_HAVE_ICU
+    printf(" icu:enabled");
 #else
-        yaz_oi_set_string_oidval(&a->u.initRequest->otherInfo,
-                                 global_parameters.odr_out, VAL_PROXY,
-                                 1, cl->database->database->url);
+    printf(" icu:disabled");
 #endif
-    }
-
-    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 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);
-            break;
-        case CCL_RPN_TERM:
-            termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
-            break;
-        default: // NOOP
-            break;
-    }
+    printf(" yaz:%s", yaz_version_str);
+    printf("\n");
+    exit(0);
 }
 
-// Extract terms from query into null-terminated termlist
-static void extract_terms(NMEM nmem, struct ccl_rpn_node *query, char **termlist)
+#ifdef WIN32
+static int tcpip_init (void)
 {
-    int num = 0;
+    WORD requested;
+    WSADATA wd;
 
-    pull_terms(nmem, query, termlist, &num);
-    termlist[num] = 0;
+    requested = MAKEWORD(1, 1);
+    if (WSAStartup(requested, &wd))
+        return 0;
+    return 1;
 }
-
-static void send_search(IOCHAN i)
-{
-    struct connection *co = iochan_getdata(i);
-    struct client *cl = co->client; 
-    struct session *se = cl->session;
-    struct session_database *sdb = 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;
-    char *recsyn = 0;
-    char *piggyback = 0;
-    char *queryenc = 0;
-    yaz_iconv_t iconv = 0;
-
-    yaz_log(YLOG_DEBUG, "Sending search to %s", cl->database->database->url);
-
-    cn = ccl_find_str(sdb->database->ccl_map, se->query, &cerror, &cpos);
-    if (!cn)
-        return;
-
-    if (!se->relevance)
-    {
-        // Initialize relevance structure with query terms
-        char *p[512];
-        extract_terms(se->nmem, cn, p);
-        se->relevance = relevance_create(se->nmem, (const char **) p,
-                se->expected_maxrecs);
-    }
-
-    // constructing RPN query
-    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);
-
-    // converting to target encoding
-    if ((queryenc = session_setting_oneval(sdb, PZ_QUERYENCODING))){
-        iconv = yaz_iconv_open(queryenc, "UTF-8");
-        if (iconv){
-            yaz_query_charset_convert_rpnquery(zquery->u.type_1, 
-                                               global_parameters.odr_out, 
-                                               iconv);
-            yaz_iconv_close(iconv);
-        } else
-            yaz_log(YLOG_WARN, "Query encoding failed %s %s", 
-                    cl->database->database->url, queryenc);
-    }
-
-    for (ndb = 0; sdb->database->databases[ndb]; ndb++)
-       ;
-    databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
-    for (ndb = 0; sdb->database->databases[ndb]; ndb++)
-       databaselist[ndb] = sdb->database->databases[ndb];
-
-    if (!(piggyback = session_setting_oneval(sdb, PZ_PIGGYBACK)) || *piggyback == '1')
-    {
-        if ((recsyn = session_setting_oneval(sdb, PZ_REQUESTSYNTAX)))
-        {
-#if YAZ_VERSIONL >= 0x020163
-            a->u.searchRequest->preferredRecordSyntax =
-                yaz_string_to_oid_odr(yaz_oid_std(),
-                                      CLASS_RECSYN, recsyn,
-                                      global_parameters.odr_out);
-#else
-            a->u.searchRequest->preferredRecordSyntax =
-                yaz_str_to_z3950oid(global_parameters.odr_out,
-                                    CLASS_RECSYN, recsyn);
 #endif
-        }
-        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;
-
-    
-    {  //scope for sending and logging queries 
-        WRBUF wbquery = wrbuf_alloc();
-        yaz_query_to_wrbuf(wbquery, zquery);
-
-
-        if (send_apdu(cl, a) >= 0)
-            {
-                iochan_setflags(i, EVENT_INPUT);
-                cl->state = Client_Searching;
-                cl->requestid = se->requestid;
-                yaz_log(YLOG_LOG, "SearchRequest %s %s %s", 
-                         cl->database->database->url,
-                        queryenc ? queryenc : "UTF-8",
-                        wrbuf_cstr(wbquery));
-            }
-        else {
-            cl->state = Client_Error;
-                yaz_log(YLOG_WARN, "Failed SearchRequest %s  %s %s", 
-                         cl->database->database->url, 
-                        queryenc ? queryenc : "UTF-8",
-                        wrbuf_cstr(wbquery));
-        }
-        
-        wrbuf_destroy(wbquery);
-    }    
 
-    odr_reset(global_parameters.odr_out);
-}
 
-static void send_present(IOCHAN i)
+static int sc_main(
+    yaz_sc_t s,
+    int argc, char **argv)
 {
-    struct connection *co = iochan_getdata(i);
-    struct client *cl = co->client; 
-    struct session_database *sdb = cl->database;
-    Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
-    int toget;
-    int start = cl->records + 1;
-    char *recsyn;
-
-    toget = global_parameters.chunk;
-    if (toget > global_parameters.toget - cl->records)
-        toget = global_parameters.toget - cl->records;
-    if (toget > cl->hits - cl->records)
-       toget = cl->hits - cl->records;
-
-    yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
-
-    a->u.presentRequest->resultSetStartPoint = &start;
-    a->u.presentRequest->numberOfRecordsRequested = &toget;
-
-    a->u.presentRequest->resultSetId = "Default";
-
-    if ((recsyn = session_setting_oneval(sdb, PZ_REQUESTSYNTAX)))
-    {
-#if YAZ_VERSIONL >= 0x020163
-        a->u.presentRequest->preferredRecordSyntax =
-            yaz_string_to_oid_odr(yaz_oid_std(),
-                                  CLASS_RECSYN, recsyn,
-                                  global_parameters.odr_out);
+    int daemon = 0;
+    int ret;
+    int log_file_in_use = 0;
+    char *arg;
+    const char *pidfile = 0;
+    const char *uid = 0;
+    const char *listener_override = 0;
+    const char *config_fname = 0;
+    const char *record_fname = 0;
+    struct conf_config *config = 0;
+    int test_mode = 0;
+
+    xmlInitParser();
+    LIBXML_TEST_VERSION
+
+#ifndef WIN32
+    if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
+        yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
 #else
-        a->u.presentRequest->preferredRecordSyntax =
-            yaz_str_to_z3950oid(global_parameters.odr_out,
-                                CLASS_RECSYN, recsyn);
+    tcpip_init();
 #endif
-    }
-
-    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);
-}
-
-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, "Init response %s", cl->database->database->url);
-
-    if (*r->result)
-    {
-       cl->state = Client_Idle;
-    }
-    else
-        cl->state = Client_Failed; // FIXME need to do something to the connection
-}
 
-static void do_searchResponse(IOCHAN i, Z_APDU *a)
-{
-    struct connection *co = iochan_getdata(i);
-    struct client *cl = co->client;
-    struct session *se = cl->session;
-    Z_SearchResponse *r = a->u.searchResponse;
+    yaz_log_init_prefix("pazpar2");
+    yaz_log_init_level(yaz_log_mask_str("post"));
+    yaz_log_xml_errors(0, YLOG_WARN);
 
-    yaz_log(YLOG_DEBUG, "Search response %s (status=%d)", 
-            cl->database->database->url, *r->searchStatus);
+    yaz_enable_panic_backtrace(argv[0]);
 
-    if (*r->searchStatus)
+    while ((ret = options("dDf:h:l:m:p:R:tu:v:Vw:X", argv, argc, &arg)) != -2)
     {
-       cl->hits = *r->resultCount;
-        se->total_hits += cl->hits;
-        if (r->presentStatus && !*r->presentStatus && r->records)
+       switch (ret)
         {
-            yaz_log(YLOG_DEBUG, "Records in search response %s", 
-                    cl->database->database->url);
-            ingest_records(cl, r->records);
-        }
-        cl->state = Client_Idle;
-    }
-    else
-    {          /*"FAILED"*/
-       cl->hits = 0;
-        cl->state = Client_Error;
-        if (r->records) {
-            Z_Records *recs = r->records;
-            if (recs->which == Z_Records_NSD)
+        case 'd':
+            global_parameters.dump_records++;
+            break;
+        case 'D':
+            daemon = 1;
+            break;
+        case 'f':
+            config_fname = arg;
+            break;
+        case 'h':
+            listener_override = arg;
+            break;
+        case 'l':
+            yaz_log_init_file(arg);
+            log_file_in_use = 1;
+            break;
+        case 'm':
+            yaz_log_time_format(arg);
+            break;
+        case 'p':
+            pidfile = arg;
+            break;
+        case 'R':
+            if (strcmp(arg, "-"))
+                record_fname = arg;
+            global_parameters.predictable_sessions = 1;
+            break;
+        case 't':
+            test_mode = 1;
+            break;
+        case 'u':
+            uid = arg;
+            break;
+        case 'v':
+            yaz_log_init_level(yaz_log_mask_str(arg));
+            break;
+        case 'V':
+            show_version();
+            break;
+        case 'w':
+            if (
+#ifdef WIN32
+              _chdir
+#else
+              chdir
+#endif
+                (arg))
             {
-                yaz_log(YLOG_WARN, 
-                        "Search response: Non-surrogate diagnostic %s",
-                        cl->database->database->url);
-                cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
-                cl->state = Client_Error;
+                yaz_log(YLOG_FATAL|YLOG_ERRNO, "chdir %s", arg);
+                return 1;
             }
-        }
-    }
-}
-
-static void do_closeResponse(IOCHAN i, Z_APDU *a)
-{
-    struct connection *co = iochan_getdata(i);
-    struct client *cl = co->client;
-    /* Z_Close *r = a->u.close; */
-
-    yaz_log(YLOG_WARN, "Close response %s", cl->database->database->url);
-
-    cl->state = Client_Failed;
-    connection_destroy(co);
-}
-
-
-char *normalize_mergekey(char *buf, int skiparticle)
-{
-    char *p = buf, *pout = buf;
-
-    if (skiparticle)
-    {
-        char firstword[64];
-        char articles[] = "the den der die des an a "; // must end in space
-
-        while (*p && !isalnum(*p))
-            p++;
-        pout = firstword;
-        while (*p && *p != ' ' && pout - firstword < 62)
-            *(pout++) = tolower(*(p++));
-        *(pout++) = ' ';
-        *(pout++) = '\0';
-        if (!strstr(articles, firstword))
-            p = buf;
-        pout = buf;
+            break;
+        case 'X':
+            global_parameters.debug_mode++;
+            global_parameters.predictable_sessions = 1;
+            break;
+        default:
+            fprintf(stderr, "Usage: pazpar2\n"
+                    "    -d                      Show internal records\n"
+                    "    -D                      Daemon mode (background)\n"
+                    "    -f configfile           Configuration\n"
+                    "    -h [host:]port          Listener port\n"
+                    "    -l file                 Log to file\n"
+                    "    -m logformat            log time format (strftime)\n"
+                    "    -p pidfile              PID file\n"
+                    "    -R recfile              HTTP recording file\n"
+                    "    -t                      Test configuration\n"
+                    "    -u uid                  Change user to uid\n"
+                    "    -V                      Show version\n"
+                    "    -v level                Set log level\n"
+                    "    -w dir                  Working directory\n"
+                    "    -X                      Debug mode\n"
+#ifdef WIN32
+                    "    -install                Install windows service\n"
+                    "    -remove                 Remove windows service\n"
+#endif
+                );
+            return 1;
+       }
     }
-
-    while (*p)
+    if (!config_fname)
     {
-        while (*p && !isalnum(*p))
-            p++;
-        while (isalnum(*p))
-            *(pout++) = tolower(*(p++));
-        if (*p)
-            *(pout++) = ' ';
-        while (*p && !isalnum(*p))
-            p++;
+        yaz_log(YLOG_FATAL, "Configuration must be given with option -f");
+        return 1;
     }
-    if (buf != pout)
-        do {
-            *(pout--) = '\0';
-        }
-        while (pout > buf && *pout == ' ');
+    pazpar2_mutex_init();
 
-    return buf;
-}
-
-static void add_facet(struct session *s, const char *type, const char *value)
-{
-    int i;
-
-    if (!*value)
-        return;
-    for (i = 0; i < s->num_termlists; i++)
-        if (!strcmp(s->termlists[i].name, type))
-            break;
-    if (i == s->num_termlists)
     {
-        if (i == SESSION_MAX_TERMLISTS)
-        {
-            yaz_log(YLOG_FATAL, "Too many termlists");
-            exit(1);
-        }
-        s->termlists[i].name = nmem_strdup(s->nmem, type);
-        s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
-        s->num_termlists = i + 1;
+        char yaz_version_str[20];
+        char yaz_sha1_str[41];
+        yaz_log(YLOG_LOG, "Pazpar2 %s " VERSION " "
+#ifdef PAZPAR2_VERSION_SHA1
+                PAZPAR2_VERSION_SHA1
+#else
+                "-"
+#endif
+                , test_mode ? "test" : "start");
+        yaz_version(yaz_version_str, yaz_sha1_str);
+        yaz_log(YLOG_LOG, "YAZ %s %s", yaz_version_str, yaz_sha1_str);
     }
-    termlist_insert(s->termlists[i].termlist, value);
-}
-
-static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
-{
-    struct database_retrievalmap *m;
-    struct database *db = cl->database->database;
-    xmlNode *res;
-    xmlDoc *rdoc;
 
-    // First normalize to XML
-    if (db->yaz_marc)
+    config = config_create(config_fname);
+    if (!config)
+        return 1;
+    sc_stop_config = config;
+    ret = 0;
+    if (test_mode)
     {
-        char *buf;
-        int len;
-        if (rec->which != Z_External_octet)
-        {
-            yaz_log(YLOG_WARN, "Unexpected external branch, probably BER %s",
-                    cl->database->database->url);
-            return 0;
-        }
-        buf = (char*) rec->u.octet_aligned->buf;
-        len = rec->u.octet_aligned->len;
-        if (yaz_marc_read_iso2709(db->yaz_marc, buf, len) < 0)
-        {
-            yaz_log(YLOG_WARN, "Failed to decode MARC %s",
-                    cl->database->database->url);
-            return 0;
-        }
-
-        yaz_marc_write_using_libxml2(db->yaz_marc, 1);
-        if (yaz_marc_write_xml(db->yaz_marc, &res,
-                    "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
-        {
-            yaz_log(YLOG_WARN, "Failed to encode as XML %s",
-                    cl->database->database->url);
-            return 0;
-        }
-        rdoc = xmlNewDoc((xmlChar *) "1.0");
-        xmlDocSetRootElement(rdoc, res);
-
+        yaz_log(YLOG_LOG, "Configuration OK");
+        config_destroy(config);
     }
     else
     {
-        yaz_log(YLOG_FATAL, 
-                "Unknown native_syntax in normalize_record from %s",
-                cl->database->database->url);
-        exit(1);
-    }
-
-    if (global_parameters.dump_records){
-        fprintf(stderr, 
-                "Input Record (normalized) from %s\n----------------\n",
-                cl->database->database->url);
-#if LIBXML_VERSION >= 20600
-        xmlDocFormatDump(stderr, rdoc, 1);
-#else
-        xmlDocDump(stderr, rdoc);
-#endif
-    }
-
-    for (m = db->map; m; m = m->next){
-        xmlDoc *new = 0;
-
-#if 1
-        {
-            xmlNodePtr root = 0;
-            new = xsltApplyStylesheet(m->stylesheet, rdoc, 0);
-            root= xmlDocGetRootElement(new);
-        if (!new || !root || !(root->children))
+        if (daemon && !log_file_in_use)
         {
-            yaz_log(YLOG_WARN, "XSLT transformation failed from %s",
-                    cl->database->database->url);
-            xmlFreeDoc(new);
-            xmlFreeDoc(rdoc);
-            return 0;
-        }
-        }
-#endif
-
-#if 0
-        // do it another way to detect transformation errors right now
-        // but does not seem to work either!
+            yaz_log(YLOG_FATAL, "Logfile must be given (option -l) for daemon "
+                    "mode");
+            ret = 1;
+        }
+        if (!ret)
+            ret = config_start_listeners(config, listener_override,
+                                         record_fname);
+        if (!ret)
         {
-            xsltTransformContextPtr ctxt;
-            ctxt = xsltNewTransformContext(m->stylesheet, rdoc);
-            new = xsltApplyStylesheetUser(m->stylesheet, rdoc, 0, 0, 0, ctxt);
-            if ((ctxt->state == XSLT_STATE_ERROR) ||
-                (ctxt->state == XSLT_STATE_STOPPED)){
-                yaz_log(YLOG_WARN, "XSLT transformation failed from %s",
-                        cl->database->database->url);
-                xmlFreeDoc(new);
-                xmlFreeDoc(rdoc);
-                return 0;
-            }
+            yaz_sc_running(s);
+            yaz_daemon("pazpar2",
+                       (global_parameters.debug_mode ? YAZ_DAEMON_DEBUG : 0) +
+                       (daemon ? YAZ_DAEMON_FORK : 0) + YAZ_DAEMON_KEEPALIVE,
+                       child_handler, config /* child_data */,
+                       pidfile, uid);
         }
-#endif      
-   
-        xmlFreeDoc(rdoc);
-        rdoc = new;
-    }
-    if (global_parameters.dump_records)
-    {
-        fprintf(stderr, "Record from %s\n----------------\n", 
-                cl->database->database->url);
-#if LIBXML_VERSION >= 20600
-        xmlDocFormatDump(stderr, rdoc, 1);
-#else
-        xmlDocDump(stderr, rdoc);
-#endif
+        yaz_log(YLOG_LOG, "Pazpar2 stop");
     }
-    return rdoc;
+    config_destroy(config);
+    return ret;
 }
 
-// Extract what appears to be years from buf, storing highest and
-// lowest values.
-static int extract_years(const char *buf, int *first, int *last)
-{
-    *first = -1;
-    *last = -1;
-    while (*buf)
-    {
-        const char *e;
-        int len;
-
-        while (*buf && !isdigit(*buf))
-            buf++;
-        len = 0;
-        for (e = buf; *e && isdigit(*e); e++)
-            len++;
-        if (len == 4)
-        {
-            int value = atoi(buf);
-            if (*first < 0 || value < *first)
-                *first = value;
-            if (*last < 0 || value > *last)
-                *last = value;
-        }
-        buf = e;
-    }
-    return *first;
-}
 
-static struct record *ingest_record(struct client *cl, Z_External *rec)
+static void sc_stop(yaz_sc_t s)
 {
-    xmlDoc *xdoc = normalize_record(cl, rec);
-    xmlNode *root, *n;
-    struct record *res;
-    struct record_cluster *cluster;
-    struct session *se = cl->session;
-    xmlChar *mergekey, *mergekey_norm;
-    xmlChar *type = 0;
-    xmlChar *value = 0;
-    struct conf_service *service = global_parameters.server->service;
-
-    if (!xdoc)
-        return 0;
-
-    root = xmlDocGetRootElement(xdoc);
-    if (!(mergekey = xmlGetProp(root, (xmlChar *) "mergekey")))
-    {
-        yaz_log(YLOG_WARN, "No mergekey found in record");
-        xmlFreeDoc(xdoc);
-        return 0;
-    }
-
-    res = nmem_malloc(se->nmem, sizeof(struct record));
-    res->next = 0;
-    res->client = cl;
-    res->metadata = nmem_malloc(se->nmem,
-            sizeof(struct record_metadata*) * service->num_metadata);
-    memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
-
-    mergekey_norm = (xmlChar *) nmem_strdup(se->nmem, (char*) mergekey);
-    xmlFree(mergekey);
-    normalize_mergekey((char *) mergekey_norm, 0);
-
-    cluster = reclist_insert(se->reclist, res, (char *) mergekey_norm, 
-                             &se->total_merged);
-    if (global_parameters.dump_records)
-        yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
-                cl->database->database->url, cl->records);
-    if (!cluster)
-    {
-        /* no room for record */
-        xmlFreeDoc(xdoc);
-        return 0;
-    }
-    relevance_newrec(se->relevance, cluster);
-
-    for (n = root->children; n; n = n->next)
-    {
-        if (type)
-            xmlFree(type);
-        if (value)
-            xmlFree(value);
-        type = value = 0;
-
-        if (n->type != XML_ELEMENT_NODE)
-            continue;
-        if (!strcmp((const char *) n->name, "metadata"))
-        {
-            struct conf_metadata *md = 0;
-            struct conf_sortkey *sk = 0;
-            struct record_metadata **wheretoput, *newm;
-            int imeta;
-            int first, last;
-
-            type = xmlGetProp(n, (xmlChar *) "type");
-            value = xmlNodeListGetString(xdoc, n->children, 0);
-
-            if (!type || !value)
-                continue;
-
-            // First, find out what field we're looking at
-            for (imeta = 0; imeta < service->num_metadata; imeta++)
-                if (!strcmp((const char *) type, service->metadata[imeta].name))
-                {
-                    md = &service->metadata[imeta];
-                    if (md->sortkey_offset >= 0)
-                        sk = &service->sortkeys[md->sortkey_offset];
-                    break;
-                }
-            if (!md)
-            {
-                yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
-                continue;
-            }
-
-            // Find out where we are putting it
-            if (md->merge == Metadata_merge_no)
-                wheretoput = &res->metadata[imeta];
-            else
-                wheretoput = &cluster->metadata[imeta];
-            
-            // Put it there
-            newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
-            newm->next = 0;
-            if (md->type == Metadata_type_generic)
-            {
-                char *p, *pe;
-                for (p = (char *) value; *p && isspace(*p); p++)
-                    ;
-                for (pe = p + strlen(p) - 1;
-                        pe > p && strchr(" ,/.:([", *pe); pe--)
-                    *pe = '\0';
-                newm->data.text = nmem_strdup(se->nmem, p);
-
-            }
-            else if (md->type == Metadata_type_year)
-            {
-                if (extract_years((char *) value, &first, &last) < 0)
-                    continue;
-            }
-            else
-            {
-                yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
-                continue;
-            }
-            if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
-            {
-                yaz_log(YLOG_WARN, "Only range merging supported for years");
-                continue;
-            }
-            if (md->merge == Metadata_merge_unique)
-            {
-                struct record_metadata *mnode;
-                for (mnode = *wheretoput; mnode; mnode = mnode->next)
-                    if (!strcmp((const char *) mnode->data.text, newm->data.text))
-                        break;
-                if (!mnode)
-                {
-                    newm->next = *wheretoput;
-                    *wheretoput = newm;
-                }
-            }
-            else if (md->merge == Metadata_merge_longest)
-            {
-                if (!*wheretoput ||
-                        strlen(newm->data.text) > strlen((*wheretoput)->data.text))
-                {
-                    *wheretoput = newm;
-                    if (sk)
-                    {
-                        char *s = nmem_strdup(se->nmem, newm->data.text);
-                        if (!cluster->sortkeys[md->sortkey_offset])
-                            cluster->sortkeys[md->sortkey_offset] = 
-                                nmem_malloc(se->nmem, sizeof(union data_types));
-                        normalize_mergekey(s,
-                                (sk->type == Metadata_sortkey_skiparticle));
-                        cluster->sortkeys[md->sortkey_offset]->text = s;
-                    }
-                }
-            }
-            else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
-            {
-                newm->next = *wheretoput;
-                *wheretoput = newm;
-            }
-            else if (md->merge == Metadata_merge_range)
-            {
-                assert(md->type == Metadata_type_year);
-                if (!*wheretoput)
-                {
-                    *wheretoput = newm;
-                    (*wheretoput)->data.number.min = first;
-                    (*wheretoput)->data.number.max = last;
-                    if (sk)
-                        cluster->sortkeys[md->sortkey_offset] = &newm->data;
-                }
-                else
-                {
-                    if (first < (*wheretoput)->data.number.min)
-                        (*wheretoput)->data.number.min = first;
-                    if (last > (*wheretoput)->data.number.max)
-                        (*wheretoput)->data.number.max = last;
-                }
-#ifdef GAGA
-                if (sk)
-                {
-                    union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
-                    yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
-                }
-#endif
-            }
-            else
-                yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
-
-            if (md->rank)
-                relevance_countwords(se->relevance, cluster, 
-                                     (char *) value, md->rank);
-            if (md->termlist)
-            {
-                if (md->type == Metadata_type_year)
-                {
-                    char year[64];
-                    sprintf(year, "%d", last);
-                    add_facet(se, (char *) type, year);
-                    if (first != last)
-                    {
-                        sprintf(year, "%d", first);
-                        add_facet(se, (char *) type, year);
-                    }
-                }
-                else
-                    add_facet(se, (char *) type, (char *) value);
-            }
-            xmlFree(type);
-            xmlFree(value);
-            type = value = 0;
-        }
-        else
-            yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
-    }
-    if (type)
-        xmlFree(type);
-    if (value)
-        xmlFree(value);
-
-    xmlFreeDoc(xdoc);
-
-    relevance_donerecord(se->relevance, cluster);
-    se->total_records++;
-
-    return res;
+    config_stop_listeners(sc_stop_config);
 }
 
-// Retrieve first defined value for 'name' for given database.
-// Will be extended to take into account user associated with session
-char *session_setting_oneval(struct session_database *db, int offset)
+int main(int argc, char **argv)
 {
-    if (!db->settings[offset])
-        return "";
-    return db->settings[offset]->value;
-}
+    int ret;
+    yaz_sc_t s = yaz_sc_create("pazpar2", "Pazpar2");
 
-static void ingest_records(struct client *cl, Z_Records *r)
-{
-#if USE_TIMING
-    yaz_timing_t t = yaz_timing_create();
+#ifdef MTRACE
+    mtrace();
 #endif
-    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];
 
-        cl->records++;
-        if (npr->which != Z_NamePlusRecord_databaseRecord)
-        {
-            yaz_log(YLOG_WARN, 
-                    "Unexpected record type, probably diagnostic %s",
-                    cl->database->database->url);
-            continue;
-        }
+    ret = yaz_sc_program(s, argc, argv, sc_main, sc_stop);
 
-        rec = ingest_record(cl, npr->u.databaseRecord);
-        if (!rec)
-            continue;
-    }
-    if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
-        session_alert_watch(s, SESSION_WATCH_RECORDS);
+    yaz_sc_destroy(&s);
 
-#if USE_TIMING
-    yaz_timing_stop(t);
-    yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f", 
-            yaz_timing_get_real(t), yaz_timing_get_user(t),
-            yaz_timing_get_sys(t));
-    yaz_timing_destroy(&t);
+#ifdef MTRACE
+    muntrace();
 #endif
-}
 
-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 %s",
-                    cl->database->database->url);
-            cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
-            cl->state = Client_Error;
-        }
-    }
 
-    if (!*r->presentStatus && cl->state != Client_Error)
-    {
-        yaz_log(YLOG_DEBUG, "Good Present response %s",
-                cl->database->database->url);
-        ingest_records(cl, r->records);
-        cl->state = Client_Idle;
-    }
-    else if (*r->presentStatus) 
-    {
-        yaz_log(YLOG_WARN, "Bad Present response %s",
-                cl->database->database->url);
-        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 %s", 
-                    cl->database->database->url);
-            connection_destroy(co);
-           return;
-       }
-        else if (len == 0)
-       {
-            yaz_log(YLOG_WARN, "EOF reading from %s", cl->database->database->url);
-            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;
-                    case Z_APDU_close:
-                        do_closeResponse(i, a);
-                        break;
-                    default:
-                        yaz_log(YLOG_WARN, 
-                                "Unexpected Z39.50 response from %s",  
-                                cl->database->database->url);
-                        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;
-
-
-    if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
-        {
-            yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
-            exit(1);
-        }
-    
-    if (0 == strlen(global_parameters.zproxy_override)){
-        /* no Z39.50 proxy needed - direct connect */
-        yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->database->url);
-        
-        if (!(addr = cs_straddr(link, cl->database->database->host->ipport)))
-            {
-                yaz_log(YLOG_WARN|YLOG_ERRNO, 
-                        "Lookup of IP address %s failed", 
-                        cl->database->database->host->ipport);
-                return 0;
-            }
-    
-    } else {
-        /* Z39.50 proxy connect */
-        yaz_log(YLOG_DEBUG, "Connection create %s proxy %s", 
-                cl->database->database->url, global_parameters.zproxy_override);
-
-        if (!(addr = cs_straddr(link, global_parameters.zproxy_override)))
-            {
-                yaz_log(YLOG_WARN|YLOG_ERRNO, 
-                        "Lookup of IP address %s failed", 
-                        global_parameters.zproxy_override);
-                return 0;
-            }
-    }
-
-    res = cs_connect(link, addr);
-    if (res < 0)
-    {
-        yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->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->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->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->database->host;
-
-    co = cl->connection;
-
-    yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->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;
-            iochan_setflag(co->iochan, EVENT_OUTPUT);
-        }
-        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;
-}
-
-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;
-}
-
-//callback for grep_databases
-static void select_targets_callback(void *context, struct session_database *db)
-{
-    struct session *se = (struct session*) context;
-    struct client *cl = client_create();
-    cl->database = db;
-    cl->session = se;
-    cl->next = se->clients;
-    se->clients = cl;
-}
-
-// Associates a set of clients with a session;
-// Note: Session-databases represent databases with per-session setting overrides
-int select_targets(struct session *se, struct database_criterion *crit)
-{
-    while (se->clients)
-        client_destroy(se->clients);
-
-    return session_grep_databases(se, crit, select_targets_callback);
-}
-
-int session_active_clients(struct session *s)
-{
-    struct client *c;
-    int res = 0;
-
-    for (c = s->clients; c; c = c->next)
-        if (c->connection && (c->state == Client_Connecting ||
-                    c->state == Client_Initializing ||
-                    c->state == Client_Searching ||
-                    c->state == Client_Presenting))
-            res++;
-
-    return res;
-}
-
-// parses crit1=val1,crit2=val2|val3,...
-static struct database_criterion *parse_filter(NMEM m, const char *buf)
-{
-    struct database_criterion *res = 0;
-    char **values;
-    int num;
-    int i;
-
-    if (!buf || !*buf)
-        return 0;
-    nmem_strsplit(m, ",", buf,  &values, &num);
-    for (i = 0; i < num; i++)
-    {
-        char **subvalues;
-        int subnum;
-        int subi;
-        struct database_criterion *new = nmem_malloc(m, sizeof(*new));
-        char *eq = strchr(values[i], '=');
-        if (!eq)
-        {
-            yaz_log(YLOG_WARN, "Missing equal-sign in filter");
-            return 0;
-        }
-        *(eq++) = '\0';
-        new->name = values[i];
-        nmem_strsplit(m, "|", eq, &subvalues, &subnum);
-        new->values = 0;
-        for (subi = 0; subi < subnum; subi++)
-        {
-            struct database_criterion_value *newv = nmem_malloc(m, sizeof(*newv));
-            newv->value = subvalues[subi];
-            newv->next = new->values;
-            new->values = newv;
-        }
-        new->next = res;
-        res = new;
-    }
-    return res;
-}
-
-char *search(struct session *se, char *query, char *filter)
-{
-    int live_channels = 0;
-    struct client *cl;
-    struct database_criterion *criteria;
-
-    yaz_log(YLOG_DEBUG, "Search");
-
-    nmem_reset(se->nmem);
-    criteria = parse_filter(se->nmem, filter);
-    strcpy(se->query, query);
-    se->requestid++;
-    select_targets(se, criteria);
-    for (cl = se->clients; cl; cl = cl->next)
-    {
-        if (client_prep_connection(cl))
-            live_channels++;
-    }
-    if (live_channels)
-    {
-        int maxrecs = live_channels * global_parameters.toget;
-        se->num_termlists = 0;
-        se->reclist = reclist_create(se->nmem, maxrecs);
-        // This will be initialized in send_search()
-        se->relevance = 0;
-        se->total_records = se->total_hits = se->total_merged = 0;
-        se->expected_maxrecs = maxrecs;
-    }
-    else
-        return "NOTARGETS";
-
-    return 0;
-}
-
-// Apply a session override to a database
-void session_apply_setting(struct session *se, char *dbname, char *setting, char *value)
-{
-    struct session_database *sdb;
-
-    for (sdb = se->databases; sdb; sdb = sdb->next)
-        if (!strcmp(dbname, sdb->database->url))
-        {
-            struct setting *new = nmem_malloc(se->session_nmem, sizeof(*new));
-            int offset = settings_offset(setting);
-
-            if (offset < 0)
-            {
-                yaz_log(YLOG_WARN, "Unknown setting %s", setting);
-                return;
-            }
-            new->precedence = 0;
-            new->target = dbname;
-            new->name = setting;
-            new->value = value;
-            new->next = sdb->settings[offset];
-            sdb->settings[offset] = new;
-            break;
-        }
-    if (!sdb)
-        yaz_log(YLOG_WARN, "Unknown database in setting override: %s", dbname);
-}
-
-void session_init_databases_fun(void *context, struct database *db)
-{
-    struct session *se = (struct session *) context;
-    struct session_database *new = nmem_malloc(se->session_nmem, sizeof(*new));
-    int num = settings_num();
-    int i;
-
-    new->database = db;
-    new->settings = nmem_malloc(se->session_nmem, sizeof(struct settings *) * num);
-    for (i = 0; i < num; i++)
-        new->settings[i] = db->settings[i];
-    new->next = se->databases;
-    se->databases = new;
-}
-
-// Initialize session_database list -- this represents this session's view
-// of the database list -- subject to modification by the settings ws command
-void session_init_databases(struct session *se)
-{
-    se->databases = 0;
-    grep_databases(se, 0, session_init_databases_fun);
-}
-
-void destroy_session(struct session *s)
-{
-    yaz_log(YLOG_LOG, "Destroying session");
-    while (s->clients)
-        client_destroy(s->clients);
-    nmem_destroy(s->nmem);
-    wrbuf_destroy(s->wrbuf);
-}
-
-struct session *new_session(NMEM nmem) 
-{
-    int i;
-    struct session *session = nmem_malloc(nmem, sizeof(*session));
-
-    yaz_log(YLOG_DEBUG, "New Pazpar2 session");
-    
-    session->total_hits = 0;
-    session->total_records = 0;
-    session->num_termlists = 0;
-    session->reclist = 0;
-    session->requestid = -1;
-    session->clients = 0;
-    session->expected_maxrecs = 0;
-    session->query[0] = '\0';
-    session->session_nmem = nmem;
-    session->nmem = nmem_create();
-    session->wrbuf = wrbuf_alloc();
-    session_init_databases(session);
-    for (i = 0; i <= SESSION_WATCH_MAX; i++)
-    {
-        session->watchlist[i].data = 0;
-        session->watchlist[i].fun = 0;
-    }
-
-    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)
-    {
-        char *name = session_setting_oneval(cl->database, PZ_NAME);
-
-        res[*count].id = cl->database->database->url;
-        res[*count].name = *name ? name : "Unknown";
-        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, const char *name, int *num)
-{
-    int i;
-
-    for (i = 0; i < s->num_termlists; i++)
-        if (!strcmp((const char *) s->termlists[i].name, name))
-            return termlist_highscore(s->termlists[i].termlist, num);
-    return 0;
-}
-
-#ifdef MISSING_HEADERS
-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_cluster *show_single(struct session *s, int id)
-{
-    struct record_cluster *r;
-
-    reclist_rewind(s->reclist);
-    while ((r = reclist_read_record(s->reclist)))
-        if (r->recid == id)
-            return r;
-    return 0;
-}
-
-struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
-        int *num, int *total, int *sumhits, NMEM nmem_show)
-{
-    struct record_cluster **recs = nmem_malloc(nmem_show, *num 
-                                       * sizeof(struct record_cluster *));
-    struct reclist_sortparms *spp;
-    int i;
-#if USE_TIMING    
-    yaz_timing_t t = yaz_timing_create();
-#endif
-
-    for (spp = sp; spp; spp = spp->next)
-        if (spp->type == Metadata_sortkey_relevance)
-        {
-            relevance_prepare_read(s->relevance, s->reclist);
-            break;
-        }
-    reclist_sort(s->reclist, sp);
-
-    *total = s->reclist->num_records;
-    *sumhits = s->total_hits;
-
-    for (i = 0; i < start; i++)
-        if (!reclist_read_record(s->reclist))
-        {
-            *num = 0;
-            recs = 0;
-            break;
-        }
-
-    for (i = 0; i < *num; i++)
-    {
-        struct record_cluster *r = reclist_read_record(s->reclist);
-        if (!r)
-        {
-            *num = i;
-            break;
-        }
-        recs[i] = r;
-    }
-#if USE_TIMING
-    yaz_timing_stop(t);
-    yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f", 
-            yaz_timing_get_real(t), yaz_timing_get_user(t),
-            yaz_timing_get_sys(t));
-    yaz_timing_destroy(&t);
-#endif
-    return recs;
-}
-
-void statistics(struct session *se, struct statistics *stat)
-{
-    struct client *cl;
-    int count = 0;
-
-    memset(stat, 0, 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++;
-    }
-    stat->num_hits = se->total_hits;
-    stat->num_records = se->total_records;
-
-    stat->num_clients = count;
-}
-
-static void start_http_listener(void)
-{
-    char hp[128] = "";
-    struct conf_server *ser = global_parameters.server;
-
-    if (*global_parameters.listener_override)
-        strcpy(hp, global_parameters.listener_override);
-    else
-    {
-        strcpy(hp, ser->host ? ser->host : "");
-        if (ser->port)
-        {
-            if (*hp)
-                strcat(hp, ":");
-            sprintf(hp + strlen(hp), "%d", ser->port);
-        }
-    }
-    http_init(hp);
-}
-
-static void start_proxy(void)
-{
-    char hp[128] = "";
-    struct conf_server *ser = global_parameters.server;
-
-    if (*global_parameters.proxy_override)
-        strcpy(hp, global_parameters.proxy_override);
-    else if (ser->proxy_host || ser->proxy_port)
-    {
-        strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
-        if (ser->proxy_port)
-        {
-            if (*hp)
-                strcat(hp, ":");
-            sprintf(hp + strlen(hp), "%d", ser->proxy_port);
-        }
-    }
-    else
-        return;
-
-    http_set_proxyaddr(hp, ser->myurl ? ser->myurl : "");
-}
-
-static void start_zproxy(void)
-{
-    struct conf_server *ser = global_parameters.server;
-
-    if (*global_parameters.zproxy_override){
-        yaz_log(YLOG_LOG, "Z39.50 proxy  %s", 
-                global_parameters.zproxy_override);
-        return;
-    }
-
-    else if (ser->zproxy_host || ser->zproxy_port)
-    {
-        char hp[128] = "";
-
-        strcpy(hp, ser->zproxy_host ? ser->zproxy_host : "");
-        if (ser->zproxy_port)
-        {
-            if (*hp)
-                strcat(hp, ":");
-            else
-                strcat(hp, "@:");
-
-            sprintf(hp + strlen(hp), "%d", ser->zproxy_port);
-        }
-        strcpy(global_parameters.zproxy_override, hp);
-        yaz_log(YLOG_LOG, "Z39.50 proxy  %s", 
-                global_parameters.zproxy_override);
-
-    }
-    else
-        return;
-}
-
-
-
-int main(int argc, char **argv)
-{
-    int ret;
-    char *arg;
-
-    if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
-        yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
-
-    yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
-
-    while ((ret = options("t:f:x:h:p:z:s:d", argv, argc, &arg)) != -2)
-    {
-       switch (ret) {
-            case 'f':
-                if (!read_config(arg))
-                    exit(1);
-                break;
-            case 'h':
-                strcpy(global_parameters.listener_override, arg);
-                break;
-            case 'p':
-                strcpy(global_parameters.proxy_override, arg);
-                break;
-            case 'z':
-                strcpy(global_parameters.zproxy_override, arg);
-                break;
-            case 't':
-                strcpy(global_parameters.settings_path_override, arg);
-                break;
-            case 's':
-                load_simpletargets(arg);
-                break;
-            case 'd':
-                global_parameters.dump_records = 1;
-                break;
-           default:
-               fprintf(stderr, "Usage: pazpar2\n"
-                        "    -f configfile\n"
-                        "    -h [host:]port          (REST protocol listener)\n"
-                        "    -C cclconfig\n"
-                        "    -s simpletargetfile\n"
-                        "    -p hostname[:portno]    (HTTP proxy)\n"
-                        "    -z hostname[:portno]    (Z39.50 proxy)\n"
-                        "    -d                      (show internal records)\n");
-               exit(1);
-       }
-    }
-
-    if (!config)
-    {
-        yaz_log(YLOG_FATAL, "Load config with -f");
-        exit(1);
-    }
-    global_parameters.server = config->servers;
-
-    start_http_listener();
-    start_proxy();
-    start_zproxy();
-
-    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
-        yaz_log(YLOG_WARN, "No settings-directory specified. Problems may well ensue!");
-    prepare_databases();
-    global_parameters.odr_in = odr_createmem(ODR_DECODE);
-    global_parameters.odr_out = odr_createmem(ODR_ENCODE);
-
-    event_loop(&channel_list);
-
-    return 0;
+    exit(ret);
 }
 
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab
  */
+