-/* $Id: config.c,v 1.1 2006-12-27 02:14:27 quinn Exp $ */
+/* $Id: config.c,v 1.4 2007-01-08 12:43:41 adam Exp $ */
+
+#include <string.h>
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxslt/xslt.h>
+#include <libxslt/transform.h>
+#include <libxslt/xsltutils.h>
+
+#if HAVE_CONFIG_H
+#include <cconfig.h>
+#endif
+
+#include <yaz/yaz-util.h>
+#include <yaz/nmem.h>
+
+#define CONFIG_NOEXTERNS
+#include "config.h"
+
+static NMEM nmem = 0;
+static char confdir[256] = ".";
+
+struct conf_config *config = 0;
+
+/* Code to parse configuration file */
+/* ==================================================== */
+
+static struct conf_service *parse_service(xmlNode *node)
+{
+ xmlNode *n;
+ struct conf_service *r = nmem_malloc(nmem, sizeof(struct conf_service));
+
+ r->termlists = 0;
+
+ for (n = node->children; n; n = n->next)
+ {
+ if (n->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp(n->name, "termlist"))
+ {
+ struct conf_termlist *tl = nmem_malloc(nmem, sizeof(struct conf_termlist));
+ xmlChar *name = xmlGetProp(n, "name");
+ if (!name)
+ {
+ yaz_log(YLOG_WARN, "Missing name attribute in termlist");
+ continue;
+ }
+ tl->name = nmem_strdup(nmem, name);
+ tl->next = r->termlists;
+ r->termlists = tl;
+ }
+ else
+ {
+ yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
+ return 0;
+ }
+ }
+ return r;
+}
+
+static struct conf_server *parse_server(xmlNode *node)
+{
+ xmlNode *n;
+ struct conf_server *r = nmem_malloc(nmem, sizeof(struct conf_server));
+
+ r->host = 0;
+ r->port = 0;
+ r->proxy_host = 0;
+ r->proxy_port = 0;
+ r->service = 0;
+ r->next = 0;
+
+ for (n = node->children; n; n = n->next)
+ {
+ if (n->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp(n->name, "listen"))
+ {
+ xmlChar *port = xmlGetProp(n, "port");
+ xmlChar *host = xmlGetProp(n, "host");
+ if (port)
+ r->port = atoi(port);
+ if (host)
+ r->host = nmem_strdup(nmem, host);
+ }
+ else if (!strcmp(n->name, "proxy"))
+ {
+ xmlChar *port = xmlGetProp(n, "port");
+ xmlChar *host = xmlGetProp(n, "host");
+ if (port)
+ r->proxy_port = atoi(port);
+ if (host)
+ r->proxy_host = nmem_strdup(nmem, host);
+ }
+ else if (!strcmp(n->name, "service"))
+ {
+ struct conf_service *s = parse_service(n);
+ if (!s)
+ return 0;
+ r->service = s;
+ }
+ else
+ {
+ yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
+ return 0;
+ }
+ }
+ return r;
+}
+
+static xsltStylesheet *load_stylesheet(const char *fname)
+{
+ char path[256];
+ sprintf(path, "%s/%s", confdir, fname);
+ return xsltParseStylesheetFile(path);
+}
+
+static void setup_marc(struct conf_retrievalprofile *r)
+{
+ yaz_iconv_t cm;
+ r->yaz_marc = yaz_marc_create();
+ if (!(cm = yaz_iconv_open("utf-8", r->native_encoding)))
+ {
+ yaz_log(YLOG_WARN, "Unable to support mapping from %s", r->native_encoding);
+ return;
+ }
+ yaz_marc_iconv(r->yaz_marc, cm);
+}
+
+static struct conf_retrievalprofile *parse_retrievalprofile(xmlNode *node)
+{
+ struct conf_retrievalprofile *r = nmem_malloc(nmem, sizeof(struct conf_retrievalprofile));
+ xmlNode *n;
+ struct conf_retrievalmap **rm = &r->maplist;
+
+ r->requestsyntax = 0;
+ r->native_syntax = Nativesyn_xml;
+ r->native_format = Nativeform_na;
+ r->native_encoding = 0;
+ r->native_mapto = Nativemapto_na;
+ r->yaz_marc = 0;
+ r->maplist = 0;
+ r->next = 0;
+
+ for (n = node->children; n; n = n->next)
+ {
+ if (n->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp(n->name, "requestsyntax"))
+ {
+ xmlChar *content = xmlNodeGetContent(n);
+ if (content)
+ r->requestsyntax = nmem_strdup(nmem, content);
+ }
+ else if (!strcmp(n->name, "nativesyntax"))
+ {
+ xmlChar *name = xmlGetProp(n, "name");
+ xmlChar *format = xmlGetProp(n, "format");
+ xmlChar *encoding = xmlGetProp(n, "encoding");
+ xmlChar *mapto = xmlGetProp(n, "mapto");
+ if (!name)
+ {
+ yaz_log(YLOG_WARN, "Missing name in 'nativesyntax' element");
+ return 0;
+ }
+ if (!strcmp(name, "iso2709"))
+ {
+ r->native_syntax = Nativesyn_iso2709;
+ // Set a few defaults, too
+ r->native_format = Nativeform_marc21;
+ r->native_mapto = Nativemapto_marcxml;
+ r->native_encoding = "marc-8";
+ setup_marc(r);
+ }
+ else if (!strcmp(name, "xml"))
+ r->native_syntax = Nativesyn_xml;
+ else
+ {
+ yaz_log(YLOG_WARN, "Unknown native syntax name %s", name);
+ return 0;
+ }
+ if (format)
+ {
+ if (!strcmp(format, "marc21") || !strcmp(format, "usmarc"))
+ r->native_format = Nativeform_marc21;
+ else
+ {
+ yaz_log(YLOG_WARN, "Unknown native format name %s", format);
+ return 0;
+ }
+ }
+ if (encoding)
+ r->native_encoding = encoding;
+ if (mapto)
+ {
+ if (!strcmp(mapto, "marcxml"))
+ r->native_mapto = Nativemapto_marcxml;
+ else if (!strcmp(mapto, "marcxchange"))
+ r->native_mapto = Nativemapto_marcxchange;
+ else
+ {
+ yaz_log(YLOG_WARN, "Unknown mapto target %s", format);
+ return 0;
+ }
+ }
+ }
+ else if (!strcmp(n->name, "map"))
+ {
+ struct conf_retrievalmap *m = nmem_malloc(nmem, sizeof(struct conf_retrievalmap));
+ xmlChar *type = xmlGetProp(n, "type");
+ xmlChar *charset = xmlGetProp(n, "charset");
+ xmlChar *format = xmlGetProp(n, "format");
+ xmlChar *stylesheet = xmlGetProp(n, "stylesheet");
+ bzero(m, sizeof(*m));
+ if (type)
+ {
+ if (!strcmp(type, "xslt"))
+ m->type = Map_xslt;
+ else
+ {
+ yaz_log(YLOG_WARN, "Unknown map type: %s", type);
+ return 0;
+ }
+ }
+ if (charset)
+ m->charset = nmem_strdup(nmem, charset);
+ if (format)
+ m->format = nmem_strdup(nmem, format);
+ if (stylesheet)
+ {
+ if (!(m->stylesheet = load_stylesheet(stylesheet)))
+ return 0;
+ }
+ *rm = m;
+ rm = &m->next;
+ }
+ else
+ {
+ yaz_log(YLOG_FATAL, "Bad element in retrievalprofile: %s", n->name);
+ return 0;
+ }
+ }
+
+ return r;
+}
+
+static struct conf_config *parse_config(xmlNode *root)
+{
+ xmlNode *n;
+ struct conf_config *r = nmem_malloc(nmem, sizeof(struct conf_config));
+ struct conf_retrievalprofile **rp = &r->retrievalprofiles;
+
+ r->servers = 0;
+ r->queryprofiles = 0;
+ r->retrievalprofiles = 0;
+
+ for (n = root->children; n; n = n->next)
+ {
+ if (n->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp(n->name, "server"))
+ {
+ struct conf_server *tmp = parse_server(n);
+ if (!tmp)
+ return 0;
+ tmp->next = r->servers;
+ r->servers = tmp;
+ }
+ else if (!strcmp(n->name, "queryprofile"))
+ {
+ }
+ else if (!strcmp(n->name, "retrievalprofile"))
+ {
+ if (!(*rp = parse_retrievalprofile(n)))
+ return 0;
+ rp = &(*rp)->next;
+ }
+ else
+ {
+ yaz_log(YLOG_FATAL, "Bad element: %s", n->name);
+ return 0;
+ }
+ }
+ return r;
+}
+
+int read_config(const char *fname)
+{
+ xmlDoc *doc = xmlReadFile(fname, NULL, 0);
+ const char *p;
+
+ if (!nmem) // Initialize
+ {
+ nmem = nmem_create();
+ xmlSubstituteEntitiesDefault(1);
+ xmlLoadExtDtdDefaultValue = 1;
+ }
+ if (!doc)
+ {
+ yaz_log(YLOG_FATAL, "Failed to read %s", fname);
+ exit(1);
+ }
+ if ((p = rindex(fname, '/')))
+ {
+ int len = p - fname;
+ strncpy(confdir, fname, len);
+ confdir[len] = '\0';
+ }
+ config = parse_config(xmlDocGetRootElement(doc));
+ xmlFreeDoc(doc);
+
+ if (config)
+ return 1;
+ else
+ return 0;
+}
+
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
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