diff options
Diffstat (limited to 'source4/lib/ldb/common')
| -rw-r--r-- | source4/lib/ldb/common/ldb_modules.c | 189 |
1 files changed, 31 insertions, 158 deletions
diff --git a/source4/lib/ldb/common/ldb_modules.c b/source4/lib/ldb/common/ldb_modules.c index 57389e8c9a..8ff04e118e 100644 --- a/source4/lib/ldb/common/ldb_modules.c +++ b/source4/lib/ldb/common/ldb_modules.c @@ -35,12 +35,6 @@ #include "dlinklist.h" #include "system/dir.h" -#define LDB_MODULE_PREFIX "modules:" -#define LDB_MODULE_PREFIX_LEN 8 - -static void *ldb_dso_load_symbol(struct ldb_context *ldb, const char *name, - const char *symbol); - void ldb_set_modules_dir(struct ldb_context *ldb, const char *path) { talloc_free(ldb->modules_dir); @@ -137,24 +131,9 @@ static struct ops_list_entry { struct ops_list_entry *next; } *registered_modules = NULL; -static const struct ldb_builtins { - const struct ldb_backend_ops *backend_ops; - const struct ldb_module_ops *module_ops; -} builtins[]; - static ldb_connect_fn ldb_find_backend(const char *url) { struct backends_list_entry *backend; - unsigned int i; - - for (i = 0; builtins[i].backend_ops || builtins[i].module_ops; i++) { - if (builtins[i].backend_ops == NULL) continue; - - if (strncmp(builtins[i].backend_ops->name, url, - strlen(builtins[i].backend_ops->name)) == 0) { - return builtins[i].backend_ops->connect_fn; - } - } for (backend = ldb_backends; backend; backend = backend->next) { if (strncmp(backend->ops->name, url, @@ -229,19 +208,6 @@ int ldb_connect_backend(struct ldb_context *ldb, fn = ldb_find_backend(backend); - if (fn == NULL) { - struct ldb_backend_ops *ops; - char *symbol_name = talloc_asprintf(ldb, "ldb_%s_backend_ops", backend); - if (symbol_name == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - ops = ldb_dso_load_symbol(ldb, backend, symbol_name); - if (ops != NULL) { - fn = ops->connect_fn; - } - talloc_free(symbol_name); - } - talloc_free(backend); if (fn == NULL) { @@ -263,14 +229,6 @@ int ldb_connect_backend(struct ldb_context *ldb, static const struct ldb_module_ops *ldb_find_module_ops(const char *name) { struct ops_list_entry *e; - unsigned int i; - - for (i = 0; builtins[i].backend_ops || builtins[i].module_ops; i++) { - if (builtins[i].module_ops == NULL) continue; - - if (strcmp(builtins[i].module_ops->name, name) == 0) - return builtins[i].module_ops; - } for (e = registered_modules; e; e = e->next) { if (strcmp(e->ops->name, name) == 0) @@ -298,38 +256,6 @@ int ldb_register_module(const struct ldb_module_ops *ops) return 0; } -static void *ldb_dso_load_symbol(struct ldb_context *ldb, const char *name, - const char *symbol) -{ - char *path; - void *handle; - void *sym; - - if (ldb->modules_dir == NULL) - return NULL; - - path = talloc_asprintf(ldb, "%s/%s.%s", ldb->modules_dir, name, - SHLIBEXT); - - ldb_debug(ldb, LDB_DEBUG_TRACE, "trying to load %s from %s", name, path); - - handle = dlopen(path, RTLD_NOW); - if (handle == NULL) { - ldb_debug(ldb, LDB_DEBUG_WARNING, "unable to load %s from %s: %s", name, path, dlerror()); - return NULL; - } - - sym = dlsym(handle, symbol); - if (sym == NULL) { - ldb_debug(ldb, LDB_DEBUG_ERROR, "no symbol `%s' found in %s: %s", symbol, path, dlerror()); - dlclose(handle); - return NULL; - } - - talloc_free(path); - - return sym; -} int ldb_load_modules_list(struct ldb_context *ldb, const char **module_list, struct ldb_module *backend, struct ldb_module **out) { @@ -347,15 +273,6 @@ int ldb_load_modules_list(struct ldb_context *ldb, const char **module_list, str } ops = ldb_find_module_ops(module_list[i]); - if (ops == NULL) { - char *symbol_name = talloc_asprintf(ldb, "ldb_%s_module_ops", - module_list[i]); - if (symbol_name == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - ops = ldb_dso_load_symbol(ldb, module_list[i], symbol_name); - talloc_free(symbol_name); - } if (ops == NULL) { ldb_debug(ldb, LDB_DEBUG_WARNING, "WARNING: Module [%s] not found", @@ -1020,6 +937,31 @@ static int ldb_modules_load_dir(const char *modules_dir, const char *version) } /* + load all modules static (builtin) modules + */ +static int ldb_modules_load_static(const char *version) +{ + static bool initialised; +#define _MODULE_PROTO(init) extern int init(const char *); + STATIC_ldb_MODULES_PROTO; + const ldb_module_init_fn static_init_functions[] = { STATIC_ldb_MODULES }; + unsigned i; + + if (initialised) { + return LDB_SUCCESS; + } + initialised = true; + + for (i=0; static_init_functions[i]; i++) { + int ret = static_init_functions[i](version); + if (ret != LDB_SUCCESS) { + return ret; + } + } + return LDB_SUCCESS; +} + +/* load all modules from the given ldb modules path, colon separated. @@ -1028,6 +970,12 @@ static int ldb_modules_load_dir(const char *modules_dir, const char *version) int ldb_modules_load(const char *modules_path, const char *version) { char *tok, *path, *tok_ptr=NULL; + int ret; + + ret = ldb_modules_load_static(version); + if (ret != LDB_SUCCESS) { + return ret; + } path = talloc_strdup(NULL, modules_path); if (path == NULL) { @@ -1038,8 +986,6 @@ int ldb_modules_load(const char *modules_path, const char *version) for (tok=strtok_r(path, ":", &tok_ptr); tok; tok=strtok_r(NULL, ":", &tok_ptr)) { - int ret; - ret = ldb_modules_load_dir(tok, version); if (ret != LDB_SUCCESS) { talloc_free(path); @@ -1050,76 +996,3 @@ int ldb_modules_load(const char *modules_path, const char *version) return LDB_SUCCESS; } - - -#ifdef STATIC_ldb_MODULES -#define STATIC_LIBLDB_MODULES STATIC_ldb_MODULES -#endif - -#ifndef STATIC_LIBLDB_MODULES - -#ifdef HAVE_LDB_LDAP -#define LDAP_BACKEND LDB_BACKEND(ldap), LDB_BACKEND(ldapi), LDB_BACKEND(ldaps), -#else -#define LDAP_BACKEND -#endif - -#ifdef HAVE_LDB_SQLITE3 -#define SQLITE3_BACKEND LDB_BACKEND(sqlite3), -#else -#define SQLITE3_BACKEND -#endif - -#define STATIC_LIBLDB_MODULES \ - LDB_BACKEND(tdb), \ - LDAP_BACKEND \ - SQLITE3_BACKEND \ - LDB_MODULE(rdn_name), \ - LDB_MODULE(paged_results), \ - LDB_MODULE(server_sort), \ - LDB_MODULE(asq), \ - NULL -#endif - -/* - * this is a bit hacked, as STATIC_LIBLDB_MODULES contains ',' - * between the elements and we want to autogenerate the - * extern struct declarations, so we do some hacks and let the - * ',' appear in an unused function prototype. - */ -#undef NULL -#define NULL LDB_MODULE(NULL), - -#define LDB_BACKEND(name) \ - int); \ - extern const struct ldb_backend_ops ldb_ ## name ## _backend_ops;\ - extern void ldb_noop ## name (int -#define LDB_MODULE(name) \ - int); \ - extern const struct ldb_module_ops ldb_ ## name ## _module_ops;\ - extern void ldb_noop ## name (int - -extern void ldb_start_noop(int, -STATIC_LIBLDB_MODULES -int); - -#undef NULL -#define NULL { \ - .backend_ops = (void *)0, \ - .module_ops = (void *)0 \ -} - -#undef LDB_BACKEND -#define LDB_BACKEND(name) { \ - .backend_ops = &ldb_ ## name ## _backend_ops, \ - .module_ops = (void *)0 \ -} -#undef LDB_MODULE -#define LDB_MODULE(name) { \ - .backend_ops = (void *)0, \ - .module_ops = &ldb_ ## name ## _module_ops \ -} - -static const struct ldb_builtins builtins[] = { - STATIC_LIBLDB_MODULES -}; |