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diff --git a/src/config.h b/src/config.h
index 801e4cb..a276e12 100644
--- a/src/config.h
+++ b/src/config.h
@@ -1,5 +1,144 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
+#include <libxslt/xslt.h>
+#include <libxslt/transform.h>
+#include <libxslt/xsltutils.h>
+
+enum conf_sortkey_type
+{
+    Metadata_sortkey_relevance,
+    Metadata_sortkey_numeric,       // Standard numerical sorting
+    Metadata_sortkey_skiparticle,   // Skip leading article when sorting
+    Metadata_sortkey_string         // Flat string
+};
+
+// Describes known metadata elements and how they are to be manipulated
+// An array of these structure provides a 'map' against which discovered metadata
+// elements are matched. It also governs storage, to minimize number of cycles needed
+// at various tages of processing
+struct conf_metadata 
+{
+    char *name;  // The name of this element. Output by normalization stylesheet
+    int brief;   // Is this element to be returned in the brief format?
+    int termlist;// Is this field to be treated as a termlist for browsing?
+    int rank;    // Rank factor. 0 means don't use this field for ranking, 1 is default
+                 // values >1  give additional significance to a field
+    int sortkey_offset; // -1 if it's not a sortkey, otherwise index
+                        // into service/record_cluster->sortkey array
+    enum
+    {
+        Metadata_type_generic,          // Generic text field
+        Metadata_type_number,           // A number
+        Metadata_type_year              // A number
+    } type;
+    enum
+    {
+        Metadata_merge_no,              // Don't merge
+        Metadata_merge_unique,          // Include unique elements in merged block
+        Metadata_merge_longest,         // Include the longest (strlen) value
+        Metadata_merge_range,           // Store value as a range of lowest-highest
+        Metadata_merge_all              // Just include all elements found
+    } merge;
+};
+
+// Controls sorting
+struct conf_sortkey
+{
+    char *name;
+    enum conf_sortkey_type type;
+};
+
+// It is conceivable that there will eventually be several 'services' offered
+// from one server, with separate configuration -- possibly more than one services
+// associated with the same port. For now, however, only a single service is possible.
+struct conf_service
+{
+    int num_metadata;
+    struct conf_metadata *metadata;
+    int num_sortkeys;
+    struct conf_sortkey *sortkeys;
+};
+
+struct conf_server
+{
+    char *host;
+    int port;
+    char *proxy_host;
+    int proxy_port;
+    char *myurl;
+    struct conf_service *service;
+    struct conf_server *next;
+};
+
+struct conf_queryprofile
+{
+    int dummy;
+};
+
+struct conf_retrievalmap
+{
+    enum {
+        Map_xslt
+    } type;
+    char *charset;
+    char *format;
+    xsltStylesheet *stylesheet;
+    struct conf_retrievalmap *next;
+};
+
+struct conf_retrievalprofile
+{
+    char *requestsyntax;
+    enum {
+        Nativesyn_xml,
+        Nativesyn_iso2709
+    } native_syntax;
+    enum {
+        Nativeform_na,
+        Nativeform_marc21,
+    } native_format;
+    char *native_encoding;
+    enum {
+        Nativemapto_na,
+        Nativemapto_marcxml,
+        Nativemapto_marcxchange
+    } native_mapto;
+    yaz_marc_t yaz_marc;
+    struct conf_retrievalmap *maplist;
+    struct conf_retrievalprofile *next;
+};
+
+struct conf_targetprofiles
+{
+    enum {
+        Targetprofiles_local
+    } type;
+    char *src;
+};
+
+struct conf_config
+{
+    struct conf_server *servers;
+    struct conf_queryprofile *queryprofiles;
+    struct conf_targetprofiles *targetprofiles;
+    struct conf_retrievalprofile *retrievalprofiles;
+};
+
+#ifndef CONFIG_NOEXTERNS
+
+extern struct conf_config *config;
 
 #endif
+
+int read_config(const char *fname);
+
+#endif
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */