remove plugin support, it has been unused for a long time and should not be used for any new code

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

9 files changed, 15 insertions, 195 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d2673d..7120648 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,10 +6,9 @@ SET(CMAKE_INSTALL_PREFIX /usr)
 
 ADD_DEFINITIONS(-Os -Wall -Werror --std=gnu99 -g3 -I. -DUCI_PREFIX="${CMAKE_INSTALL_PREFIX}")
 
-OPTION(UCI_PLUGIN_SUPPORT "plugin support" ON)
 OPTION(UCI_DEBUG "debugging support" OFF)
 OPTION(UCI_DEBUG_TYPECAST "typecast debugging support" OFF)
-OPTION(BUILD_LUA "build Lua plugin" ON)
+OPTION(BUILD_LUA "build Lua binding" ON)
 
 CONFIGURE_FILE( ${CMAKE_SOURCE_DIR}/uci_config.h.in ${CMAKE_SOURCE_DIR}/uci_config.h )
 
diff --git a/cli.c b/cli.c
index 41a78cb..a5b77a8 100644
--- a/cli.c
+++ b/cli.c
@@ -27,7 +27,6 @@ static enum {
 	CLI_FLAG_NOCOMMIT = (1 << 2),
 	CLI_FLAG_BATCH =    (1 << 3),
 	CLI_FLAG_SHOW_EXT = (1 << 4),
-	CLI_FLAG_NOPLUGINS= (1 << 5),
 } flags;
 
 static FILE *input;
@@ -147,7 +146,6 @@ static void uci_usage(void)
 		"\t-c <path>  set the search path for config files (default: /etc/config)\n"
 		"\t-d <str>   set the delimiter for list values in uci show\n"
 		"\t-f <file>  use <file> as input instead of stdin\n"
-		"\t-L         do not load any plugins\n"
 		"\t-m         when importing, merge data into an existing package\n"
 		"\t-n         name unnamed sections on export (default)\n"
 		"\t-N         don't name unnamed sections\n"
@@ -664,9 +662,6 @@ int main(int argc, char **argv)
 					return 1;
 				}
 				break;
-			case 'L':
-				flags |= CLI_FLAG_NOPLUGINS;
-				break;
 			case 'm':
 				flags |= CLI_FLAG_MERGE;
 				break;
@@ -712,9 +707,6 @@ int main(int argc, char **argv)
 		return 0;
 	}
 
-	if (!(flags & CLI_FLAG_NOPLUGINS))
-		uci_load_plugins(ctx, NULL);
-
 	ret = uci_cmd(argc - 1, argv + 1);
 	if (input != stdin)
 		fclose(input);
diff --git a/libuci.c b/libuci.c
index 4c2bf96..550eca2 100644
--- a/libuci.c
+++ b/libuci.c
@@ -37,8 +37,6 @@ static const char *uci_errstr[] = {
 	[UCI_ERR_UNKNOWN] =   "Unknown error",
 };
 
-static void uci_unload_plugin(struct uci_context *ctx, struct uci_plugin *p);
-
 #include "uci_internal.h"
 #include "list.c"
 
@@ -59,7 +57,6 @@ struct uci_context *uci_alloc_context(void)
 	uci_list_init(&ctx->delta_path);
 	uci_list_init(&ctx->backends);
 	uci_list_init(&ctx->hooks);
-	uci_list_init(&ctx->plugins);
 	ctx->flags = UCI_FLAG_STRICT | UCI_FLAG_SAVED_DELTA;
 
 	ctx->confdir = (char *) uci_confdir;
@@ -90,9 +87,6 @@ void uci_free_context(struct uci_context *ctx)
 		uci_free_element(e);
 	}
 	UCI_TRAP_RESTORE(ctx);
-	uci_foreach_element_safe(&ctx->root, tmp, e) {
-		uci_unload_plugin(ctx, uci_to_plugin(e));
-	}
 	free(ctx);
 
 ignore:
@@ -232,56 +226,6 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
 	return 0;
 }
 
-#ifdef UCI_PLUGIN_SUPPORT
-
-__plugin int uci_add_backend(struct uci_context *ctx, struct uci_backend *b)
-{
-	struct uci_element *e;
-	UCI_HANDLE_ERR(ctx);
-
-	e = uci_lookup_list(&ctx->backends, b->e.name);
-	if (e)
-		UCI_THROW(ctx, UCI_ERR_DUPLICATE);
-
-	e = uci_malloc(ctx, sizeof(struct uci_backend));
-	memcpy(e, b, sizeof(struct uci_backend));
-
-	uci_list_add(&ctx->backends, &e->list);
-	return 0;
-}
-
-__plugin int uci_del_backend(struct uci_context *ctx, struct uci_backend *b)
-{
-	struct uci_element *e, *tmp;
-
-	UCI_HANDLE_ERR(ctx);
-
-	e = uci_lookup_list(&ctx->backends, b->e.name);
-	if (!e || uci_to_backend(e)->ptr != b->ptr)
-		UCI_THROW(ctx, UCI_ERR_NOTFOUND);
-	b = uci_to_backend(e);
-
-	if (ctx->backend && ctx->backend->ptr == b->ptr)
-		ctx->backend = &uci_file_backend;
-
-	uci_foreach_element_safe(&ctx->root, tmp, e) {
-		struct uci_package *p = uci_to_package(e);
-
-		if (!p->backend)
-			continue;
-
-		if (p->backend->ptr == b->ptr)
-			UCI_INTERNAL(uci_unload, ctx, p);
-	}
-
-	uci_list_del(&b->e.list);
-	free(b);
-
-	return 0;
-}
-
-#endif
-
 int uci_set_backend(struct uci_context *ctx, const char *name)
 {
 	struct uci_element *e;
@@ -331,58 +275,3 @@ int uci_remove_hook(struct uci_context *ctx, const struct uci_hook_ops *ops)
 	}
 	return UCI_ERR_NOTFOUND;
 }
-
-int uci_load_plugin(struct uci_context *ctx, const char *filename)
-{
-	struct uci_plugin *p;
-	const struct uci_plugin_ops *ops;
-	void *dlh;
-
-	UCI_HANDLE_ERR(ctx);
-	dlh = dlopen(filename, RTLD_GLOBAL|RTLD_NOW);
-	if (!dlh)
-		UCI_THROW(ctx, UCI_ERR_NOTFOUND);
-
-	ops = dlsym(dlh, "uci_plugin");
-	if (!ops || !ops->attach || (ops->attach(ctx) != 0)) {
-		if (!ops)
-			fprintf(stderr, "No ops\n");
-		else if (!ops->attach)
-			fprintf(stderr, "No attach\n");
-		else
-			fprintf(stderr, "Other weirdness\n");
-		dlclose(dlh);
-		UCI_THROW(ctx, UCI_ERR_INVAL);
-	}
-
-	p = uci_alloc_element(ctx, plugin, filename, 0);
-	p->dlh = dlh;
-	p->ops = ops;
-	uci_list_add(&ctx->plugins, &p->e.list);
-
-	return 0;
-}
-
-static void uci_unload_plugin(struct uci_context *ctx, struct uci_plugin *p)
-{
-	if (p->ops->detach)
-		p->ops->detach(ctx);
-	dlclose(p->dlh);
-	uci_free_element(&p->e);
-}
-
-int uci_load_plugins(struct uci_context *ctx, const char *pattern)
-{
-	glob_t gl;
-	int i;
-
-	if (!pattern)
-		pattern = UCI_PREFIX "/lib/uci_*.so";
-
-	memset(&gl, 0, sizeof(gl));
-	glob(pattern, 0, NULL, &gl);
-	for (i = 0; i < gl.gl_pathc; i++)
-		uci_load_plugin(ctx, gl.gl_pathv[i]);
-
-	return 0;
-}
diff --git a/list.c b/list.c
index bf0f376..f47b5a8 100644
--- a/list.c
+++ b/list.c
@@ -217,7 +217,7 @@ uci_free_section(struct uci_section *s)
 	uci_free_element(&s->e);
 }
 
-__plugin struct uci_package *
+__private struct uci_package *
 uci_alloc_package(struct uci_context *ctx, const char *name)
 {
 	struct uci_package *p;
diff --git a/lua/uci.c b/lua/uci.c
index 0667fc2..98e0a2f 100644
--- a/lua/uci.c
+++ b/lua/uci.c
@@ -863,20 +863,6 @@ uci_lua_add_delta(lua_State *L)
 }
 
 static int
-uci_lua_load_plugins(lua_State *L)
-{
-	struct uci_context *ctx;
-	int offset = 0;
-	const char *str = NULL;
-
-	ctx = find_context(L, &offset);
-	if (lua_isstring(L, -1))
-		str = lua_tostring(L, -1);
-	uci_load_plugins(ctx, str);
-	return uci_push_status(L, ctx, false);
-}
-
-static int
 uci_lua_set_savedir(lua_State *L)
 {
 	struct uci_context *ctx;
@@ -945,7 +931,6 @@ static const luaL_Reg uci[] = {
 	{ "foreach", uci_lua_foreach },
 	{ "add_history", uci_lua_add_delta },
 	{ "add_delta", uci_lua_add_delta },
-	{ "load_plugins", uci_lua_load_plugins },
 	{ "get_confdir", uci_lua_get_confdir },
 	{ "set_confdir", uci_lua_set_confdir },
 	{ "get_savedir", uci_lua_get_savedir },
diff --git a/uci.h b/uci.h
index 68b53f5..447ff9e 100644
--- a/uci.h
+++ b/uci.h
@@ -61,7 +61,6 @@ struct uci_list
 };
 
 struct uci_ptr;
-struct uci_plugin;
 struct uci_hook_ops;
 struct uci_element;
 struct uci_package;
@@ -319,25 +318,6 @@ extern int uci_add_hook(struct uci_context *ctx, const struct uci_hook_ops *ops)
 extern int uci_remove_hook(struct uci_context *ctx, const struct uci_hook_ops *ops);
 
 /**
- * uci_load_plugin: load an uci plugin
- * @ctx: uci context
- * @filename: path to the uci plugin
- *
- * NB: plugin will be unloaded automatically when the context is freed
- */
-int uci_load_plugin(struct uci_context *ctx, const char *filename);
-
-/**
- * uci_load_plugins: load all uci plugins from a directory
- * @ctx: uci context
- * @pattern: pattern of uci plugin files (optional)
- *
- * if pattern is NULL, then uci_load_plugins will call uci_load_plugin
- * for uci_*.so in <prefix>/lib/
- */
-int uci_load_plugins(struct uci_context *ctx, const char *pattern);
-
-/**
  * uci_parse_ptr: parse a uci string into a uci_ptr
  * @ctx: uci context
  * @ptr: target data structure
@@ -387,7 +367,6 @@ enum uci_type {
 	UCI_TYPE_BACKEND = 6,
 	UCI_TYPE_ITEM = 7,
 	UCI_TYPE_HOOK = 8,
-	UCI_TYPE_PLUGIN = 9,
 };
 
 enum uci_option_type {
@@ -451,7 +430,6 @@ struct uci_context
 	int bufsz;
 
 	struct uci_list hooks;
-	struct uci_list plugins;
 };
 
 struct uci_package
@@ -540,19 +518,6 @@ struct uci_hook
 	const struct uci_hook_ops *ops;
 };
 
-struct uci_plugin_ops
-{
-	int (*attach)(struct uci_context *ctx);
-	void (*detach)(struct uci_context *ctx);
-};
-
-struct uci_plugin
-{
-	struct uci_element e;
-	const struct uci_plugin_ops *ops;
-	void *dlh;
-};
-
 struct uci_parse_option {
 	const char *name;
 	enum uci_option_type type;
@@ -629,7 +594,6 @@ struct uci_parse_option {
 #define uci_type_section UCI_TYPE_SECTION
 #define uci_type_option UCI_TYPE_OPTION
 #define uci_type_hook UCI_TYPE_HOOK
-#define uci_type_plugin UCI_TYPE_PLUGIN
 
 /* element typecasting */
 #ifdef UCI_DEBUG_TYPECAST
@@ -640,7 +604,6 @@ static const char *uci_typestr[] = {
 	[uci_type_section] = "section",
 	[uci_type_option] = "option",
 	[uci_type_hook] = "hook",
-	[uci_type_plugin] = "plugin",
 };
 
 static void uci_typecast_error(int from, int to)
@@ -663,7 +626,6 @@ BUILD_CAST(package)
 BUILD_CAST(section)
 BUILD_CAST(option)
 BUILD_CAST(hook)
-BUILD_CAST(plugin)
 
 #else
 #define uci_to_backend(ptr) container_of(ptr, struct uci_backend, e)
@@ -672,7 +634,6 @@ BUILD_CAST(plugin)
 #define uci_to_section(ptr) container_of(ptr, struct uci_section, e)
 #define uci_to_option(ptr)  container_of(ptr, struct uci_option, e)
 #define uci_to_hook(ptr)    container_of(ptr, struct uci_hook, e)
-#define uci_to_plugin(ptr)  container_of(ptr, struct uci_plugin, e)
 #endif
 
 /**
diff --git a/uci_config.h.in b/uci_config.h.in
index 5161f18..e903e8e 100644
--- a/uci_config.h.in
+++ b/uci_config.h.in
@@ -1,3 +1,2 @@
-#cmakedefine UCI_PLUGIN_SUPPORT	1
 #cmakedefine UCI_DEBUG 1
 #cmakedefine UCI_DEBUG_TYPECAST 1
diff --git a/uci_internal.h b/uci_internal.h
index 02f81f5..453aabb 100644
--- a/uci_internal.h
+++ b/uci_internal.h
@@ -17,11 +17,6 @@
 
 #define __private __attribute__((visibility("hidden")))
 #define __public
-#ifdef UCI_PLUGIN_SUPPORT
-#define __plugin extern
-#else
-#define __plugin __private
-#endif
 
 struct uci_parse_context
 {
@@ -43,13 +38,13 @@ struct uci_parse_context
 extern const char *uci_confdir;
 extern const char *uci_savedir;
 
-__plugin void *uci_malloc(struct uci_context *ctx, size_t size);
-__plugin void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size);
-__plugin char *uci_strdup(struct uci_context *ctx, const char *str);
-__plugin bool uci_validate_str(const char *str, bool name);
-__plugin void uci_add_delta(struct uci_context *ctx, struct uci_list *list, int cmd, const char *section, const char *option, const char *value);
-__plugin void uci_free_delta(struct uci_delta *h);
-__plugin struct uci_package *uci_alloc_package(struct uci_context *ctx, const char *name);
+__private void *uci_malloc(struct uci_context *ctx, size_t size);
+__private void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size);
+__private char *uci_strdup(struct uci_context *ctx, const char *str);
+__private bool uci_validate_str(const char *str, bool name);
+__private void uci_add_delta(struct uci_context *ctx, struct uci_list *list, int cmd, const char *section, const char *option, const char *value);
+__private void uci_free_delta(struct uci_delta *h);
+__private struct uci_package *uci_alloc_package(struct uci_context *ctx, const char *name);
 
 __private FILE *uci_open_stream(struct uci_context *ctx, const char *filename, int pos, bool write, bool create);
 __private void uci_close_stream(FILE *stream);
@@ -130,7 +125,7 @@ extern struct uci_backend uci_file_backend;
  *
  * The default backend is "file", which uses /etc/config for config storage
  */
-__plugin int uci_add_backend(struct uci_context *ctx, struct uci_backend *b);
+__private int uci_add_backend(struct uci_context *ctx, struct uci_backend *b);
 
 /**
  * uci_add_backend: add an extra backend
@@ -139,7 +134,7 @@ __plugin int uci_add_backend(struct uci_context *ctx, struct uci_backend *b);
  *
  * The default backend is "file", which uses /etc/config for config storage
  */
-__plugin int uci_del_backend(struct uci_context *ctx, struct uci_backend *b);
+__private int uci_del_backend(struct uci_context *ctx, struct uci_backend *b);
 #endif
 
 #define UCI_BACKEND(_var, _name, ...)	\
diff --git a/util.c b/util.c
index 916f0c1..3725ec1 100644
--- a/util.c
+++ b/util.c
@@ -31,7 +31,7 @@
 #include "uci.h"
 #include "uci_internal.h"
 
-__plugin void *uci_malloc(struct uci_context *ctx, size_t size)
+__private void *uci_malloc(struct uci_context *ctx, size_t size)
 {
 	void *ptr;
 
@@ -43,7 +43,7 @@ __plugin void *uci_malloc(struct uci_context *ctx, size_t size)
 	return ptr;
 }
 
-__plugin void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size)
+__private void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size)
 {
 	ptr = realloc(ptr, size);
 	if (!ptr)
@@ -52,7 +52,7 @@ __plugin void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size)
 	return ptr;
 }
 
-__plugin char *uci_strdup(struct uci_context *ctx, const char *str)
+__private char *uci_strdup(struct uci_context *ctx, const char *str)
 {
 	char *ptr;
 
@@ -68,7 +68,7 @@ __plugin char *uci_strdup(struct uci_context *ctx, const char *str)
  * for names, only alphanum and _ is allowed (shell compatibility)
  * for types, we allow more characters
  */
-__plugin bool uci_validate_str(const char *str, bool name)
+__private bool uci_validate_str(const char *str, bool name)
 {
 	if (!*str)
 		return false;