2 * libuci - Library for the Unified Configuration Interface
3 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 * This file contains some common code for the uci library
20 #include <sys/types.h>
28 static const char *uci_confdir = UCI_CONFDIR;
29 static const char *uci_savedir = UCI_SAVEDIR;
31 static const char *uci_errstr[] = {
33 [UCI_ERR_MEM] = "Out of memory",
34 [UCI_ERR_INVAL] = "Invalid argument",
35 [UCI_ERR_NOTFOUND] = "Entry not found",
36 [UCI_ERR_IO] = "I/O error",
37 [UCI_ERR_PARSE] = "Parse error",
38 [UCI_ERR_DUPLICATE] = "Duplicate entry",
39 [UCI_ERR_UNKNOWN] = "Unknown error",
42 static void uci_cleanup(struct uci_context *ctx);
44 #include "uci_internal.h"
50 /* exported functions */
51 struct uci_context *uci_alloc_context(void)
53 struct uci_context *ctx;
55 ctx = (struct uci_context *) malloc(sizeof(struct uci_context));
56 memset(ctx, 0, sizeof(struct uci_context));
57 uci_list_init(&ctx->root);
58 uci_list_init(&ctx->history_path);
59 uci_list_init(&ctx->backends);
60 ctx->flags = UCI_FLAG_STRICT;
62 ctx->confdir = (char *) uci_confdir;
63 ctx->savedir = (char *) uci_savedir;
65 uci_list_add(&ctx->backends, &uci_file_backend.e.list);
66 ctx->backend = &uci_file_backend;
71 void uci_free_context(struct uci_context *ctx)
73 struct uci_element *e, *tmp;
75 if (ctx->confdir != uci_confdir)
77 if (ctx->savedir != uci_savedir)
81 UCI_TRAP_SAVE(ctx, ignore);
82 uci_foreach_element_safe(&ctx->root, tmp, e) {
83 struct uci_package *p = uci_to_package(e);
86 uci_foreach_element_safe(&ctx->history_path, tmp, e) {
90 UCI_TRAP_RESTORE(ctx);
96 int uci_set_confdir(struct uci_context *ctx, const char *dir)
101 UCI_ASSERT(ctx, dir != NULL);
103 cdir = uci_strdup(ctx, dir);
104 if (ctx->confdir != uci_confdir)
110 static void uci_cleanup(struct uci_context *ctx)
112 struct uci_parse_context *pctx;
126 uci_free_package(&pctx->package);
134 void uci_perror(struct uci_context *ctx, const char *prefix)
143 if ((err < 0) || (err >= UCI_ERR_LAST))
144 err = UCI_ERR_UNKNOWN;
147 fprintf(stderr, "%s: ", prefix);
149 fprintf(stderr, "%s: ", ctx->func);
154 fprintf(stderr, "%s (%s) at line %d, byte %d\n", uci_errstr[err], (ctx->pctx->reason ? ctx->pctx->reason : "unknown"), ctx->pctx->line, ctx->pctx->byte);
159 fprintf(stderr, "%s\n", uci_errstr[err]);
164 int uci_list_configs(struct uci_context *ctx, char ***list)
167 UCI_ASSERT(ctx, list != NULL);
168 UCI_ASSERT(ctx, ctx->backend && ctx->backend->list_configs);
169 *list = ctx->backend->list_configs(ctx);
173 int uci_commit(struct uci_context *ctx, struct uci_package **package, bool overwrite)
175 struct uci_package *p;
177 UCI_ASSERT(ctx, package != NULL);
179 UCI_ASSERT(ctx, p != NULL);
180 UCI_ASSERT(ctx, p->backend && p->backend->commit);
181 p->backend->commit(ctx, package, overwrite);
185 int uci_load(struct uci_context *ctx, const char *name, struct uci_package **package)
187 struct uci_package *p;
189 UCI_ASSERT(ctx, ctx->backend && ctx->backend->load);
190 p = ctx->backend->load(ctx, name);
197 int uci_set_backend(struct uci_context *ctx, const char *name)
199 struct uci_element *e;
202 UCI_ASSERT(ctx, name != NULL);
203 e = uci_lookup_list(&ctx->backends, name);
205 UCI_THROW(ctx, UCI_ERR_NOTFOUND);
206 ctx->backend = uci_to_backend(e);