-/* $Id: database.c,v 1.9 2007-04-11 02:14:15 quinn 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
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.
- */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
-#include <libxml/parser.h>
-#include <libxml/tree.h>
-#include <libxslt/xslt.h>
-#include <libxslt/transform.h>
-#include <libxslt/xsltutils.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <yaz/log.h>
+#include <yaz/nmem.h>
-#include "pazpar2.h"
-#include "config.h"
+#include "ppmutex.h"
+#include "session.h"
+#include "pazpar2_config.h"
#include "settings.h"
#include "http.h"
-#include "zeerex.h"
+#include "database.h"
#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <netinet/in.h>
-static struct host *hosts = 0; // The hosts we know about
-static struct database *databases = 0; // The databases we know about
-static NMEM nmem = 0;
+enum pazpar2_database_criterion_type {
+ PAZPAR2_STRING_MATCH,
+ PAZPAR2_SUBSTRING_MATCH
+};
-static xmlDoc *get_explain_xml(const char *id)
-{
- struct stat st;
- char *dir;
- char path[256];
- char ide[256];
- if (!config || !config->targetprofiles)
- {
- yaz_log(YLOG_WARN, "Config must be loaded and specify targetprofiles");
- return 0;
- }
- if (config->targetprofiles->type != Targetprofiles_local)
- {
- yaz_log(YLOG_FATAL, "Only supports local type");
- return 0;
- }
- dir = config->targetprofiles->src;
- urlencode(id, ide);
- sprintf(path, "%s/%s", dir, ide);
- if (!stat(path, &st))
- return xmlParseFile(path);
- else
- return 0;
-}
+struct database_criterion_value {
+ char *value;
+ struct database_criterion_value *next;
+};
-// Create a new host structure for hostport
-static struct host *create_host(const char *hostport)
-{
- struct addrinfo *addrinfo, hints;
- struct host *host;
- char *port;
- char ipport[128];
- unsigned char addrbuf[4];
- int res;
-
- host = xmalloc(sizeof(struct host));
- host->hostport = xstrdup(hostport);
- host->connections = 0;
-
- if ((port = strchr(hostport, ':')))
- *(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 always
- // returns AF_INET address.
- if ((res = getaddrinfo(hostport, port, &hints, &addrinfo)))
- {
- yaz_log(YLOG_WARN, "Failed to resolve %s: %s", hostport, gai_strerror(res));
- xfree(host->hostport);
- xfree(host);
- return 0;
- }
- assert(addrinfo->ai_family == PF_INET);
- memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
- sprintf(ipport, "%u.%u.%u.%u:%s",
- addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
- host->ipport = xstrdup(ipport);
- freeaddrinfo(addrinfo);
- host->next = hosts;
- hosts = host;
- return host;
-}
+struct database_criterion {
+ char *name;
+ enum pazpar2_database_criterion_type type;
+ struct database_criterion_value *values;
+ struct database_criterion *next;
+};
-static struct host *find_host(const char *hostport)
+struct database *new_database(const char *id, NMEM nmem)
{
- struct host *p;
- for (p = hosts; p; p = p->next)
- if (!strcmp(p->hostport, hostport))
- return p;
- return create_host(hostport);
+ return new_database_inherit_settings(id, nmem, 0);
}
-
-static struct database *load_database(const char *id)
+struct database *new_database_inherit_settings(const char *id, NMEM nmem, struct settings_array *service_settings)
{
- xmlDoc *doc = get_explain_xml(id);
- struct zr_explain *explain = 0;
struct database *db;
- struct host *host;
- char hostport[256];
- char *dbname;
+ struct setting *idset;
- if (!nmem)
- nmem = nmem_create();
- if (doc)
- {
- explain = zr_read_xml(nmem, xmlDocGetRootElement(doc));
- if (!explain)
- return 0;
- }
- if (strlen(id) > 255)
- return 0;
- strcpy(hostport, id);
- if ((dbname = strchr(hostport, '/')))
- *(dbname++) = '\0';
- else
- dbname = "Default";
- if (!(host = find_host(hostport)))
- return 0;
db = nmem_malloc(nmem, sizeof(*db));
- memset(db, 0, sizeof(*db));
- db->host = host;
- db->url = nmem_strdup(nmem, id);
- db->name = 0;
- db->databases = xmalloc(2 * sizeof(char *));
- db->databases[0] = nmem_strdup(nmem, dbname);
- db->databases[1] = 0;
- db->errors = 0;
- db->explain = explain;
- db->settings = 0;
- db->next = databases;
- db->ccl_map = 0;
- db->yaz_marc = 0;
- db->map = 0;
- databases = db;
+ db->id = nmem_strdup(nmem, id);
+ db->next = 0;
+
+ if (service_settings && service_settings->num_settings > 0) {
+ yaz_log(YLOG_DEBUG, "copying settings from service to database %s settings", db->id);
+ db->num_settings = service_settings->num_settings;
+ db->settings = nmem_malloc(nmem, sizeof(*db->settings) * db->num_settings);
+ // Initialize database settings with service settings
+ memcpy(db->settings, service_settings->settings, sizeof(*db->settings) * db->num_settings);
+ }
+ else {
+ yaz_log(YLOG_DEBUG, "No service settings to database %s ", db->id);
+ db->num_settings = PZ_MAX_EOF;
+ db->settings = nmem_malloc(nmem, sizeof(*db->settings) * db->num_settings);
+ memset(db->settings, 0, sizeof(*db->settings) * db->num_settings);
+ }
+ idset = nmem_malloc(nmem, sizeof(*idset));
+ idset->precedence = 0;
+ idset->name = "pz:id";
+ idset->target = idset->value = db->id;
+ idset->next = db->settings[PZ_ID];
+ db->settings[PZ_ID] = idset;
return db;
}
// Return a database structure by ID. Load and add to list if necessary
// new==1 just means we know it's not in the list
-struct database *find_database(const char *id, int new)
+struct database *create_database_for_service(const char *id,
+ struct conf_service *service)
{
struct database *p;
- if (!new)
- {
- for (p = databases; p; p = p->next)
- if (!strcmp(p->url, id))
- return p;
- }
- return load_database(id);
+ for (p = service->databases; p; p = p->next)
+ if (!strcmp(p->id, id))
+ return p;
+
+ yaz_log(YLOG_DEBUG, "new database %s under service %s", id,
+ service->id ? service->id : "null");
+ p = new_database_inherit_settings(id, service->nmem, service->settings);
+ p->next = service->databases;
+ service->databases = p;
+
+ return p;
}
-// This whole session_grep database thing should be moved to pazpar2.c
+// This whole session_grep database thing should be moved elsewhere
int match_zurl(const char *zurl, const char *pattern)
{
+ int len;
+
if (!strcmp(pattern, "*"))
return 1;
- else if (!strncmp(pattern, "*/", 2))
+ else if (!strncmp(pattern, "*/", 2)) // host wildcard.. what the heck is that for?
{
char *db = strchr(zurl, '/');
if (!db)
else
return 0;
}
+ else if (*(pattern + (len = strlen(pattern) - 1)) == '*') // db wildcard
+ {
+ if (!strncmp(pattern, zurl, len))
+ return 1;
+ else
+ return 0;
+ }
else if (!strcmp(pattern, zurl))
return 1;
else
}
// This will be generalized at some point
-static int match_criterion(struct setting **settings, struct database_criterion *c)
+static int match_criterion(struct setting **settings,
+ struct conf_service *service,
+ struct database_criterion *c)
{
- int offset = settings_offset(c->name);
+ int offset = settings_lookup_offset(service, c->name);
struct database_criterion_value *v;
if (offset < 0)
return 0;
for (v = c->values; v; v = v->next)
{
- if (offset == PZ_ID)
+ if (c->type == PAZPAR2_STRING_MATCH)
{
- if (match_zurl(settings[offset]->value, v->value))
- return 1;
+ if (offset == PZ_ID)
+ {
+ if (match_zurl(settings[offset]->value, v->value))
+ break;
+ }
else
- return 0;
+ {
+ if (!strcmp(settings[offset]->value, v->value))
+ break;
+ }
}
- else
+ else if (c->type == PAZPAR2_SUBSTRING_MATCH)
{
- if (!strcmp(settings[offset]->value, v->value))
- return 1;
- else
- return 0;
+ if (strstr(settings[offset]->value, v->value))
+ break;
+ }
+ }
+ if (v)
+ return 1;
+ else
+ return 0;
+}
+
+// parses crit1=val1,crit2=val2|val3,...
+static struct database_criterion *create_database_criterion(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;
+ for (eq = values[i]; *eq; eq++)
+ if (*eq == '=')
+ {
+ new->type = PAZPAR2_STRING_MATCH;
+ break;
+ }
+ else if (*eq == '~')
+ {
+ new->type = PAZPAR2_SUBSTRING_MATCH;
+ break;
+ }
+ if (!*eq)
+ {
+ yaz_log(YLOG_WARN, "Missing equal-sign/tilde 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 0;
+ return res;
}
-int database_match_criteria(struct setting **settings, struct database_criterion *cl)
+static int database_match_criteria(struct setting **settings,
+ struct conf_service *service,
+ struct database_criterion *cl)
{
for (; cl; cl = cl->next)
- if (!match_criterion(settings, cl))
+ if (!match_criterion(settings, service, cl))
break;
if (cl) // one of the criteria failed to match -- skip this db
return 0;
// Cycles through databases, calling a handler function on the ones for
// which all criteria matched.
-int session_grep_databases(struct session *se, struct database_criterion *cl,
- void (*fun)(void *context, struct session_database *db))
+int session_grep_databases(struct session *se, const char *filter,
+ void (*fun)(struct session *se, struct session_database *db))
{
struct session_database *p;
+ NMEM nmem = nmem_create();
int i = 0;
+ struct database_criterion *cl = create_database_criterion(nmem, filter);
for (p = se->databases; p; p = p->next)
- if (database_match_criteria(p->settings, cl))
+ {
+ if (p->settings && p->settings[PZ_ALLOW] && *p->settings[PZ_ALLOW]->value == '0')
+ continue;
+ if (!p->settings[PZ_NAME])
+ continue;
+ if (database_match_criteria(p->settings, se->service, cl))
{
(*fun)(se, p);
i++;
}
+ }
+ nmem_destroy(nmem);
return i;
}
-int grep_databases(void *context, struct database_criterion *cl,
- void (*fun)(void *context, struct database *db))
+int predef_grep_databases(void *context, struct conf_service *service,
+ void (*fun)(void *context, struct database *db))
{
struct database *p;
int i = 0;
- for (p = databases; p; p = p->next)
- if (database_match_criteria(p->settings, cl))
+ for (p = service->databases; p; p = p->next)
+ if (database_match_criteria(p->settings, service, 0))
{
(*fun)(context, p);
i++;
return i;
}
-// Initialize CCL map for a target
-// Note: This approach ignores user-specific CCL maps, for which I
-// don't presently see any application.
-static void prepare_cclmap(void *ignore, struct database *db)
-{
- struct setting *s;
-
- if (!db->settings)
- return;
- db->ccl_map = ccl_qual_mk();
- for (s = db->settings[PZ_CCLMAP]; s; s = s->next)
- if (!*s->user)
- {
- char *p = strchr(s->name + 3, ':');
- if (!p)
- {
- yaz_log(YLOG_FATAL, "Malformed cclmap name: %s", s->name);
- exit(1);
- }
- p++;
- ccl_qual_fitem(db->ccl_map, s->value, p);
- }
-}
-
-// Initialize YAZ Map structures for MARC-based targets
-static void prepare_yazmarc(void *ignore, struct database *db)
-{
- struct setting *s;
-
- if (!db->settings)
- return;
- for (s = db->settings[PZ_NATIVESYNTAX]; s; s = s->next)
- if (!*s->user && !strcmp(s->value, "iso2709"))
- {
- char *encoding = "marc-8s";
- yaz_iconv_t cm;
-
- db->yaz_marc = yaz_marc_create();
- yaz_marc_subfield_str(db->yaz_marc, "\t");
- // See if a native encoding is specified
- for (s = db->settings[PZ_ENCODING]; s; s = s->next)
- if (!*s->user)
- {
- encoding = s->value;
- break;
- }
- if (!(cm = yaz_iconv_open("utf-8", encoding)))
- {
- yaz_log(YLOG_FATAL, "Unable to map from %s to UTF-8", encoding);
- exit(1);
- }
- yaz_marc_iconv(db->yaz_marc, cm);
- break;
- }
-}
-
-// Prepare XSLT stylesheets for record normalization
-static void prepare_map(void *ignore, struct database *db)
-{
- struct setting *s;
-
- if (!db->settings)
- return;
- for (s = db->settings[PZ_XSLT]; s; s = s->next)
- if (!*s->user)
- {
- char **stylesheets;
- struct database_retrievalmap **m = &db->map;
- int num, i;
-
- nmem_strsplit(nmem, ",", s->value, &stylesheets, &num);
- for (i = 0; i < num; i++)
- {
- (*m) = nmem_malloc(nmem, sizeof(**m));
- (*m)->next = 0;
- if (!((*m)->stylesheet = conf_load_stylesheet(stylesheets[i])))
- {
- yaz_log(YLOG_FATAL, "Unable to load stylesheet: %s",
- stylesheets[i]);
- exit(1);
- }
- m = &(*m)->next;
- }
- break;
- }
- if (!s)
- yaz_log(YLOG_WARN, "No Normalization stylesheet for target %s", db->url);
-}
-
-// Read settings for each database, and prepare support data structures
-void prepare_databases(void)
-{
- grep_databases(0, 0, prepare_cclmap);
- grep_databases(0, 0, prepare_yazmarc);
- grep_databases(0, 0, prepare_map);
-}
-
-// This function will most likely vanish when a proper target profile mechanism is
-// introduced.
-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;
- char *name;
- struct database *db;
-
- if (strncmp(line, "target ", 7))
- continue;
- line[strlen(line) - 1] = '\0';
-
- if ((name = strchr(line, ';')))
- *(name++) = '\0';
-
- url = line + 7;
-
- if (!(db = find_database(url, 0)))
- yaz_log(YLOG_WARN, "Unable to load database %s", url);
- if (name && db)
- db->name = nmem_strdup(nmem, name);
- }
- fclose(f);
-}
-
-
/*
* Local variables:
* c-basic-offset: 4
+ * c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
+
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