+// Read settings from an XML file, calling handler function for each setting
+int settings_read_node_x(xmlNode *n,
+ void *client_data,
+ void (*fun)(void *client_data,
+ struct setting *set))
+{
+ int ret_val = 0; /* success */
+ const char *namea = yaz_xml_get_prop(n, "name");
+ const char *targeta = yaz_xml_get_prop(n, "target");
+ const char *valuea = yaz_xml_get_prop(n, "value");
+ const char *precedencea = yaz_xml_get_prop(n, "precedence");
+
+ for (n = n->children; n; n = n->next)
+ {
+ if (n->type != XML_ELEMENT_NODE)
+ continue;
+ if (!strcmp((const char *) n->name, "set"))
+ {
+ xmlNode *root = n->children;
+ struct setting set;
+ const char *name = yaz_xml_get_prop(n, "name");
+ const char *target = yaz_xml_get_prop(n, "target");
+ const char *value = yaz_xml_get_prop(n, "value");
+ const char *precedence = yaz_xml_get_prop(n, "precedence");
+ xmlChar *buf_out = 0;
+
+ set.next = 0;
+
+ if (precedence)
+ set.precedence = atoi((char *) precedence);
+ else if (precedencea)
+ set.precedence = atoi((char *) precedencea);
+ else
+ set.precedence = 0;
+
+ set.target = target ? target : targeta;
+ set.name = name ? name : namea;
+
+ while (root && root->type != XML_ELEMENT_NODE)
+ root = root->next;
+ if (!root)
+ set.value = value ? value : valuea;
+ else
+ { /* xml document content for this setting */
+ xmlDoc *doc = xmlNewDoc(BAD_CAST "1.0");
+ if (!doc)
+ {
+ if (set.name)
+ yaz_log(YLOG_WARN, "bad XML content for setting "
+ "name=%s", set.name);
+ else
+ yaz_log(YLOG_WARN, "bad XML content for setting");
+ ret_val = -1;
+ }
+ else
+ {
+ int len_out;
+ xmlDocSetRootElement(doc, xmlCopyNode(root, 1));
+ xmlDocDumpMemory(doc, &buf_out, &len_out);
+ /* xmlDocDumpMemory 0-terminates */
+ set.value = (const char *) buf_out;
+ xmlFreeDoc(doc);
+ }
+ }
+
+ if (set.name && set.value && set.target)
+ (*fun)(client_data, &set);
+ else
+ {
+ if (set.name)
+ yaz_log(YLOG_WARN, "missing value and/or target for "
+ "setting name=%s", set.name);
+ else
+ yaz_log(YLOG_WARN, "missing name/value/target for setting");
+ ret_val = -1;
+ }
+ xmlFree(buf_out);
+ }
+ else
+ {
+ yaz_log(YLOG_WARN, "Unknown element %s in settings file",
+ (char*) n->name);
+ ret_val = -1;
+ }
+ }
+ return ret_val;
+}
+
+static int read_settings_file(const char *path,
+ void *client_data,
+ void (*fun)(void *client_data,
+ struct setting *set))
+{
+ xmlDoc *doc = xmlParseFile(path);
+ xmlNode *n;
+ int ret;
+
+ if (!doc)
+ {
+ yaz_log(YLOG_FATAL, "Failed to parse %s", path);
+ return -1;
+ }
+ n = xmlDocGetRootElement(doc);
+ ret = settings_read_node_x(n, client_data, fun);
+
+ xmlFreeDoc(doc);
+ return ret;
+}
+
+
+// Recursively read files or directories, invoking a
+// callback for each one
+static int read_settings(const char *path,
+ void *client_data,
+ void (*fun)(void *client_data,
+ struct setting *set))
+{
+ int ret = 0;
+ DIR *d;
+ struct dirent *de;
+ char *dot;
+
+ if (isdir(path))
+ {
+ if (!(d = opendir(path)))
+ {
+ yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", path);
+ return -1;
+ }
+ while ((de = readdir(d)))
+ {
+ char tmp[1024];
+ if (*de->d_name == '.' || !strcmp(de->d_name, "CVS"))
+ continue;
+ sprintf(tmp, "%s/%s", path, de->d_name);
+ if (read_settings(tmp, client_data, fun))
+ ret = -1;
+ }
+ closedir(d);
+ }
+ else if ((dot = strrchr(path, '.')) && !strcmp(dot + 1, "xml"))
+ ret = read_settings_file(path, client_data, fun);
+ return ret;
+}
+
+// Determines if a ZURL is a wildcard, and what kind
+static int zurl_wildcard(const char *zurl)
+{
+ if (!zurl)
+ return SETTING_WILDCARD_NO;
+ if (*zurl == '*')
+ return SETTING_WILDCARD_YES;
+ else if (*(zurl + strlen(zurl) - 1) == '*')
+ return SETTING_WILDCARD_DB;
+ else
+ return SETTING_WILDCARD_NO;
+}
+
+struct update_database_context {
+ struct setting *set;
+ struct conf_service *service;
+};
+
+void expand_settings_array(struct setting ***set_ar, int *num, int offset,
+ NMEM nmem)
+{
+ assert(offset >= 0);
+ assert(*set_ar);
+ if (offset >= *num)
+ {
+ int i, n_num = offset + 10;
+ struct setting **n_ar = nmem_malloc(nmem, n_num * sizeof(*n_ar));
+ for (i = 0; i < *num; i++)
+ n_ar[i] = (*set_ar)[i];
+ for (; i < n_num; i++)
+ n_ar[i] = 0;
+ *num = n_num;
+ *set_ar = n_ar;
+ }
+}
+
+void expand_settings_array2(struct settings_array *settings, int offset, NMEM nmem)
+{
+ assert(offset >= 0);
+ assert(settings);
+ if (offset >= settings->num_settings)
+ {
+ int i, n_num = offset + 10;
+ struct setting **n_ar = nmem_malloc(nmem, n_num * sizeof(*n_ar));
+ for (i = 0; i < settings->num_settings; i++)
+ n_ar[i] = settings->settings[i];
+ for (; i < n_num; i++)
+ n_ar[i] = 0;
+ settings->num_settings = n_num;
+ settings->settings = n_ar;
+ }
+}
+
+static void update_settings(struct setting *set, struct settings_array *settings, int offset, NMEM nmem)
+{
+ struct setting **sp;
+ yaz_log(YLOG_DEBUG, "update service settings offset %d with %s=%s", offset, set->name, set->value);
+ expand_settings_array2(settings, offset, nmem);
+
+ // First we determine if this setting is overriding any existing settings
+ // with the same name.
+ assert(offset < settings->num_settings);
+ for (sp = &settings->settings[offset]; *sp; )
+ if (!strcmp((*sp)->name, set->name))
+ {
+ if ((*sp)->precedence < set->precedence)
+ {
+ // We discard the value (nmem keeps track of the space)
+ *sp = (*sp)->next; // unlink value from existing setting
+ }
+ else if ((*sp)->precedence > set->precedence)
+ {
+ // Db contains a higher-priority setting. Abort search
+ break;
+ }
+ else if (zurl_wildcard((*sp)->target) > zurl_wildcard(set->target))
+ {
+ // target-specific value trumps wildcard. Delete.
+ *sp = (*sp)->next; // unlink.....
+ }
+ else if (zurl_wildcard((*sp)->target) < zurl_wildcard(set->target))
+ // Db already contains higher-priority setting. Abort search
+ break;
+ else
+ sp = &(*sp)->next;
+ }
+ else
+ sp = &(*sp)->next;
+ if (!*sp) // is null when there are no higher-priority settings, so we add one
+ {
+ struct setting *new = nmem_malloc(nmem, sizeof(*new));
+ memset(new, 0, sizeof(*new));
+ new->precedence = set->precedence;
+ new->target = nmem_strdup_null(nmem, set->target);
+ new->name = nmem_strdup_null(nmem, set->name);
+ new->value = nmem_strdup_null(nmem, set->value);
+ new->next = settings->settings[offset];
+ settings->settings[offset] = new;
+ }
+}
+
+
+// This is called from grep_databases -- adds/overrides setting for a target
+// This is also where the rules for precedence of settings are implemented
+static void update_database_fun(void *context, struct database *db)
+{
+ struct setting *set = ((struct update_database_context *)
+ context)->set;
+ struct conf_service *service = ((struct update_database_context *)
+ context)->service;
+ struct setting **sp;
+ int offset;
+
+ // Is this the right database?
+ if (!match_zurl(db->id, set->target))
+ return;
+
+ offset = settings_create_offset(service, set->name);
+ expand_settings_array(&db->settings, &db->num_settings, offset, service->nmem);
+
+ // First we determine if this setting is overriding any existing settings
+ // with the same name.
+ assert(offset < db->num_settings);
+ for (sp = &db->settings[offset]; *sp; )
+ if (!strcmp((*sp)->name, set->name))
+ {
+ if ((*sp)->precedence < set->precedence)
+ {
+ // We discard the value (nmem keeps track of the space)
+ *sp = (*sp)->next; // unlink value from existing setting
+ }
+ else if ((*sp)->precedence > set->precedence)
+ {
+ // Db contains a higher-priority setting. Abort search
+ break;
+ }
+ else if (zurl_wildcard((*sp)->target) > zurl_wildcard(set->target))
+ {
+ // target-specific value trumps wildcard. Delete.
+ *sp = (*sp)->next; // unlink.....
+ }
+ else if (zurl_wildcard((*sp)->target) < zurl_wildcard(set->target))
+ // Db already contains higher-priority setting. Abort search
+ break;
+ else
+ sp = &(*sp)->next;
+ }
+ else
+ sp = &(*sp)->next;
+ if (!*sp) // is null when there are no higher-priority settings, so we add one
+ {
+ struct setting *new = nmem_malloc(service->nmem, sizeof(*new));
+
+ memset(new, 0, sizeof(*new));
+ new->precedence = set->precedence;
+ new->target = nmem_strdup(service->nmem, set->target);
+ new->name = nmem_strdup(service->nmem, set->name);
+ new->value = nmem_strdup(service->nmem, set->value);
+ new->next = db->settings[offset];
+ db->settings[offset] = new;
+ }
+}
+
+// Callback -- updates database records with dictionary entries as appropriate
+// This is used in pass 2 to assign name/value pairs to databases
+static void update_databases(void *client_data, struct setting *set)
+{
+ struct conf_service *service = (struct conf_service *) client_data;
+ struct update_database_context context;
+ context.set = set;
+ context.service = service;
+ predef_grep_databases(&context, service, update_database_fun);
+}
+
+// This simply copies the 'hard' (application-specific) settings
+// to the settings dictionary.
+static void initialize_hard_settings(struct conf_service *service)
+{
+ struct setting_dictionary *dict = service->dictionary;
+ dict->dict = nmem_malloc(service->nmem, sizeof(hard_settings) - sizeof(char*));
+ dict->size = (sizeof(hard_settings) - sizeof(char*)) / sizeof(char*);
+ memcpy(dict->dict, hard_settings, dict->size * sizeof(char*));
+ dict->num = dict->size;
+}
+
+// Read any settings names introduced in service definition (config) and add to dictionary
+// This is done now to avoid errors if user settings are declared in session overrides
+void initialize_soft_settings(struct conf_service *service)
+{
+ int i;
+ for (i = 0; i < service->num_metadata; i++)
+ {
+ struct conf_metadata *md = &service->metadata[i];
+
+ if (md->setting != Metadata_setting_no)
+ settings_create_offset(service, md->name);
+
+ // Also create setting for some metadata attributes.
+ if (md->limitmap) {
+ int index;
+ WRBUF wrbuf = wrbuf_alloc();
+ yaz_log(YLOG_DEBUG, "Metadata %s has limitmap: %s ",md->name, md->limitmap);
+ wrbuf_printf(wrbuf, "pz:limitmap:%s", md->name);
+ index = settings_create_offset(service, wrbuf_cstr(wrbuf));
+ if (index >= 0) {
+ struct setting new;
+ int offset;
+ yaz_log(YLOG_DEBUG, "Service %s default %s=%s",
+ (service->id ? service->id: "unknown"), wrbuf_cstr(wrbuf), md->limitmap);
+ new.name = (char *) wrbuf_cstr(wrbuf);
+ new.value = md->limitmap;
+ new.next = 0;
+ new.target = 0;
+ new.precedence = 0;
+ offset = settings_create_offset(service, new.name);
+ update_settings(&new, service->settings, offset, service->nmem);
+ }
+ wrbuf_destroy(wrbuf);
+ // TODO same for facetmap
+ }
+ }
+}
+
+static void prepare_target_dictionary(void *client_data, struct setting *set)
+{
+ struct conf_service *service = (struct conf_service *) client_data;
+
+ // If target address is not wildcard, add the database
+ if (*set->target && !zurl_wildcard(set->target))
+ create_database_for_service(set->target, service);
+}
+
+void init_settings(struct conf_service *service)