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>
27 static const char *uci_confdir
= UCI_CONFDIR
;
28 static const char *uci_savedir
= UCI_SAVEDIR
;
30 static const char *uci_errstr
[] = {
32 [UCI_ERR_MEM
] = "Out of memory",
33 [UCI_ERR_INVAL
] = "Invalid argument",
34 [UCI_ERR_NOTFOUND
] = "Entry not found",
35 [UCI_ERR_IO
] = "I/O error",
36 [UCI_ERR_PARSE
] = "Parse error",
37 [UCI_ERR_DUPLICATE
] = "Duplicate entry",
38 [UCI_ERR_UNKNOWN
] = "Unknown error",
41 static void uci_cleanup(struct uci_context
*ctx
);
43 #include "uci_internal.h"
49 /* exported functions */
50 struct uci_context
*uci_alloc_context(void)
52 struct uci_context
*ctx
;
54 ctx
= (struct uci_context
*) malloc(sizeof(struct uci_context
));
55 memset(ctx
, 0, sizeof(struct uci_context
));
56 uci_list_init(&ctx
->root
);
57 uci_list_init(&ctx
->history_path
);
58 uci_list_init(&ctx
->backends
);
59 ctx
->flags
= UCI_FLAG_STRICT
;
61 ctx
->confdir
= (char *) uci_confdir
;
62 ctx
->savedir
= (char *) uci_savedir
;
64 uci_list_add(&ctx
->backends
, &uci_file_backend
.e
.list
);
65 ctx
->backend
= &uci_file_backend
;
70 void uci_free_context(struct uci_context
*ctx
)
72 struct uci_element
*e
, *tmp
;
74 if (ctx
->confdir
!= uci_confdir
)
76 if (ctx
->savedir
!= uci_savedir
)
80 UCI_TRAP_SAVE(ctx
, ignore
);
81 uci_foreach_element_safe(&ctx
->root
, tmp
, e
) {
82 struct uci_package
*p
= uci_to_package(e
);
85 uci_foreach_element_safe(&ctx
->history_path
, tmp
, e
) {
89 UCI_TRAP_RESTORE(ctx
);
95 int uci_set_confdir(struct uci_context
*ctx
, const char *dir
)
100 UCI_ASSERT(ctx
, dir
!= NULL
);
102 cdir
= uci_strdup(ctx
, dir
);
103 if (ctx
->confdir
!= uci_confdir
)
109 static void uci_cleanup(struct uci_context
*ctx
)
111 struct uci_parse_context
*pctx
;
125 uci_free_package(&pctx
->package
);
133 void uci_perror(struct uci_context
*ctx
, const char *prefix
)
142 if ((err
< 0) || (err
>= UCI_ERR_LAST
))
143 err
= UCI_ERR_UNKNOWN
;
146 fprintf(stderr
, "%s: ", prefix
);
148 fprintf(stderr
, "%s: ", ctx
->func
);
153 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
);
158 fprintf(stderr
, "%s\n", uci_errstr
[err
]);
163 int uci_list_configs(struct uci_context
*ctx
, char ***list
)
166 UCI_ASSERT(ctx
, list
!= NULL
);
167 UCI_ASSERT(ctx
, ctx
->backend
&& ctx
->backend
->list_configs
);
168 *list
= ctx
->backend
->list_configs(ctx
);
172 int uci_commit(struct uci_context
*ctx
, struct uci_package
**package
, bool overwrite
)
174 struct uci_package
*p
;
176 UCI_ASSERT(ctx
, package
!= NULL
);
178 UCI_ASSERT(ctx
, p
!= NULL
);
179 UCI_ASSERT(ctx
, p
->backend
&& p
->backend
->commit
);
180 p
->backend
->commit(ctx
, package
, overwrite
);
184 int uci_load(struct uci_context
*ctx
, const char *name
, struct uci_package
**package
)
186 struct uci_package
*p
;
188 UCI_ASSERT(ctx
, ctx
->backend
&& ctx
->backend
->load
);
189 p
= ctx
->backend
->load(ctx
, name
);
196 int uci_set_backend(struct uci_context
*ctx
, const char *name
)
198 struct uci_element
*e
;
201 UCI_ASSERT(ctx
, name
!= NULL
);
202 e
= uci_lookup_list(&ctx
->backends
, name
);
204 UCI_THROW(ctx
, UCI_ERR_NOTFOUND
);
205 ctx
->backend
= uci_to_backend(e
);