contrib/package: add freifunk watchdog daemon

[project/luci.git] / contrib / package / freifunk-watchdog / src / ucix.c

diff --git a/contrib/package/freifunk-watchdog/src/ucix.c b/contrib/package/freifunk-watchdog/src/ucix.c
new file mode 100644 (file)
index 0000000..634d9e1
--- /dev/null
+++ b/contrib/package/freifunk-watchdog/src/ucix.c
@@ -0,0 +1,98 @@
+/*
+ *   This program 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 Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or 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 this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *   Copyright (C) 2008 John Crispin <blogic@openwrt.org> 
+ *
+ *   Changed by Jo-Philipp Wich <xm@subsignal.org>
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <uci_config.h>
+#include <uci.h>
+#include "ucix.h"
+
+static struct uci_ptr ptr;
+
+static inline int ucix_get_ptr(struct uci_context *ctx, const char *p, const char *s, const char *o, const char *t)
+{
+       memset(&ptr, 0, sizeof(ptr));
+       ptr.package = p;
+       ptr.section = s;
+       ptr.option = o;
+       ptr.value = t;
+       return uci_lookup_ptr(ctx, &ptr, NULL, true);
+}
+
+struct uci_context* ucix_init(const char *config_file)
+{
+       struct uci_context *ctx = uci_alloc_context();
+       uci_add_history_path(ctx, "/var/state");
+       if(uci_load(ctx, config_file, NULL) != UCI_OK)
+       {
+               return NULL;
+       }
+       return ctx;
+}
+
+void ucix_cleanup(struct uci_context *ctx)
+{
+       uci_free_context(ctx);
+}
+
+const char* ucix_get_option(struct uci_context *ctx, const char *p, const char *s, const char *o)
+{
+       struct uci_element *e = NULL;
+       const char *value = NULL;
+       if(ucix_get_ptr(ctx, p, s, o, NULL))
+               return NULL;
+       if (!(ptr.flags & UCI_LOOKUP_COMPLETE))
+               return NULL;
+       e = ptr.last;
+       switch (e->type)
+       {
+       case UCI_TYPE_SECTION:
+               value = uci_to_section(e)->type;
+               break;
+       case UCI_TYPE_OPTION:
+               switch(ptr.o->type) {
+                       case UCI_TYPE_STRING:
+                               value = ptr.o->v.string;
+                               break;
+                       default:
+                               value = NULL;
+                               break;
+               }
+               break;
+       default:
+               return 0;
+       }
+
+       return value;
+}
+
+void ucix_for_each_section_type(struct uci_context *ctx,
+       const char *p, const char *t,
+       void (*cb)(const char*, void*), void *priv)
+{
+       struct uci_element *e;
+       if(ucix_get_ptr(ctx, p, NULL, NULL, NULL))
+               return;
+       uci_foreach_element(&ptr.p->sections, e)
+               if (!strcmp(t, uci_to_section(e)->type))
+                       cb(e->name, priv);
+}
+