#ifndef __LIBUCI_H
#define __LIBUCI_H
+#include "uci_config.h"
+
/*
* you can use these defines to enable debugging behavior for
* apps compiled against libuci:
*
*/
-#ifdef DEBUG_ALL
-#define UCI_DEBUG
-#define UCI_DEBUG_TYPECAST
-#endif
-
#include <stdbool.h>
#include <setjmp.h>
#include <stdio.h>
#define UCI_CONFDIR "/etc/config"
#define UCI_SAVEDIR "/tmp/.uci"
-#define UCI_FILEMODE 0600
+#define UCI_DIRMODE 0700
+#define UCI_FILEMODE 0600
enum
{
* If section is omitted, then a pointer to the config package is returned
* If option is omitted, then a pointer to the config section is returned
*/
-extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *package, char *section, char *option);
+extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *package, const char *section, const char *option);
+
+/**
+ * uci_lookup_ext: Extended lookup for an uci element
+ *
+ * @ctx: uci context
+ * @res: where to store the result
+ * @ptr: uci pointer tuple
+ *
+ * Looks up an element using the extended syntax, which is a superset of what
+ * uci_parse_tuple accepts. It can look up sections by an index with an optional
+ * type.
+ *
+ * Examples:
+ * network.@interface[0].ifname ('ifname' option of the first interface section)
+ * network.@interface[-1] (last interface section)
+ * Note: uci_lookup_ext will automatically load a config package if necessary
+ */
+extern int uci_lookup_ext(struct uci_context *ctx, struct uci_element **res, char *ptr);
/**
* uci_add_section: Add an unnamed section
* @type: section type
* @res: pointer to store a reference to the new section in
*/
-extern int uci_add_section(struct uci_context *ctx, struct uci_package *p, char *type, struct uci_section **res);
+extern int uci_add_section(struct uci_context *ctx, struct uci_package *p, const char *type, struct uci_section **res);
/**
* uci_set_element_value: Replace an element's value with a new one
* Only valid for uci_option and uci_section. Will replace the type string
* when used with an uci_section
*/
-extern int uci_set_element_value(struct uci_context *ctx, struct uci_element **element, char *value);
+extern int uci_set_element_value(struct uci_context *ctx, struct uci_element **element, const char *value);
/**
* uci_set: Set an element's value; create the element if necessary
* @value: value (option) or type (section)
* @result: store the updated element in this variable (optional)
*/
-extern int uci_set(struct uci_context *ctx, struct uci_package *p, char *section, char *option, char *value, struct uci_element **result);
+extern int uci_set(struct uci_context *ctx, struct uci_package *p, const char *section, const char *option, const char *value, struct uci_element **result);
/**
* uci_rename: Rename an element
* @section: section name
* @option: option name (optional)
*/
-extern int uci_delete(struct uci_context *ctx, struct uci_package *p, char *section, char *option);
+extern int uci_delete(struct uci_context *ctx, struct uci_package *p, const char *section, const char *option);
/**
* uci_save: save change history for a package
/**
* uci_list_configs: List available uci config files
* @ctx: uci context
+ *
+ * caller is responsible for freeing the allocated memory behind list
*/
extern int uci_list_configs(struct uci_context *ctx, char ***list);
* @section: section name (optional)
* @option option name (optional)
*/
-extern int uci_revert(struct uci_context *ctx, struct uci_package **p, char *section, char *option);
+extern int uci_revert(struct uci_context *ctx, struct uci_package **p, const char *section, const char *option);
/**
* uci_parse_argument: parse a shell-style argument, with an arbitrary quoting style
*/
extern int uci_parse_argument(struct uci_context *ctx, FILE *stream, char **str, char **result);
+/**
+ * uci_set_backend: change the default backend
+ * @ctx: uci context
+ * @name: name of the backend
+ *
+ * The default backend is "file", which uses /etc/config for config storage
+ */
+extern int uci_set_backend(struct uci_context *ctx, const char *name);
+
+/**
+ * uci_validate_text: validate a value string for uci options
+ * @str: value
+ *
+ * this function checks whether a given string is acceptable as value
+ * for uci options
+ */
+extern bool uci_validate_text(const char *str);
+
/* UCI data structures */
enum uci_type {
UCI_TYPE_HISTORY = 0,
UCI_TYPE_PACKAGE = 1,
UCI_TYPE_SECTION = 2,
UCI_TYPE_OPTION = 3,
- UCI_TYPE_PATH = 4
+ UCI_TYPE_PATH = 4,
+ UCI_TYPE_BACKEND = 5,
};
enum uci_flags {
struct uci_backend
{
- const char *name;
+ struct uci_element e;
char **(*list_configs)(struct uci_context *ctx);
struct uci_package *(*load)(struct uci_context *ctx, const char *name);
void (*commit)(struct uci_context *ctx, struct uci_package **p, bool overwrite);
-};
+ /* private: */
+ const void *ptr;
+ void *priv;
+};
struct uci_context
{
/* backend for import and export */
struct uci_backend *backend;
+ struct uci_list backends;
/* uci runtime flags */
enum uci_flags flags;
struct uci_list history_path;
/* private: */
- int errno;
+ int err;
const char *func;
jmp_buf trap;
bool internal;
struct uci_element e;
struct uci_list sections;
struct uci_context *ctx;
- bool confdir;
+ bool has_history;
char *path;
/* private: */
struct uci_backend *backend;
+ void *priv;
int n_section;
struct uci_list history;
struct uci_list saved_history;
char *value;
};
+
/* linked list handling */
#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
* @_type: config, section or option
* @_ptr: pointer to the uci_list struct
*/
-#define element_to(type, ptr) \
- container_of(ptr, struct uci_ ## type, e)
-
#define list_to_element(ptr) \
container_of(ptr, struct uci_element, list)
#define uci_list_empty(list) ((list)->next == (list))
/* wrappers for dynamic type handling */
+#define uci_type_backend UCI_TYPE_BACKEND
#define uci_type_history UCI_TYPE_HISTORY
#define uci_type_package UCI_TYPE_PACKAGE
#define uci_type_section UCI_TYPE_SECTION
/* element typecasting */
#ifdef UCI_DEBUG_TYPECAST
static const char *uci_typestr[] = {
+ [uci_type_backend] = "backend",
[uci_type_history] = "history",
[uci_type_package] = "package",
[uci_type_section] = "section",
return (struct uci_ ## _type *) e; \
}
+BUILD_CAST(backend)
BUILD_CAST(history)
BUILD_CAST(package)
BUILD_CAST(section)
BUILD_CAST(option)
#else
+#define uci_to_backend(ptr) container_of(ptr, struct uci_backend, e)
#define uci_to_history(ptr) container_of(ptr, struct uci_history, e)
#define uci_to_package(ptr) container_of(ptr, struct uci_package, e)
#define uci_to_section(ptr) container_of(ptr, struct uci_section, e)