1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* libuci - Library for the Unified Configuration Interface
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
/*
* This file contains some common code for the uci library
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <dlfcn.h>
#include <glob.h>
#include "uci.h"
static const char *uci_errstr[] = {
[UCI_OK] = "Success",
[UCI_ERR_MEM] = "Out of memory",
[UCI_ERR_INVAL] = "Invalid argument",
[UCI_ERR_NOTFOUND] = "Entry not found",
[UCI_ERR_IO] = "I/O error",
[UCI_ERR_PARSE] = "Parse error",
[UCI_ERR_DUPLICATE] = "Duplicate entry",
[UCI_ERR_UNKNOWN] = "Unknown error",
};
#include "uci_internal.h"
#include "list.c"
__private const char *uci_confdir = UCI_CONFDIR;
__private const char *uci_savedir = UCI_SAVEDIR;
/* exported functions */
struct uci_context *uci_alloc_context(void)
{
struct uci_context *ctx;
ctx = (struct uci_context *) calloc(1, sizeof(struct uci_context));
if (!ctx)
return NULL;
uci_list_init(&ctx->root);
uci_list_init(&ctx->delta_path);
uci_list_init(&ctx->backends);
ctx->flags = UCI_FLAG_STRICT | UCI_FLAG_SAVED_DELTA;
ctx->confdir = (char *) uci_confdir;
ctx->savedir = (char *) uci_savedir;
uci_add_delta_path(ctx, uci_savedir);
uci_list_add(&ctx->backends, &uci_file_backend.e.list);
ctx->backend = &uci_file_backend;
return ctx;
}
void uci_free_context(struct uci_context *ctx)
{
struct uci_element *e, *tmp;
if (ctx->confdir != uci_confdir)
free(ctx->confdir);
if (ctx->savedir != uci_savedir)
free(ctx->savedir);
uci_cleanup(ctx);
UCI_TRAP_SAVE(ctx, ignore);
uci_foreach_element_safe(&ctx->root, tmp, e) {
struct uci_package *p = uci_to_package(e);
uci_free_package(&p);
}
uci_foreach_element_safe(&ctx->delta_path, tmp, e) {
uci_free_element(e);
}
UCI_TRAP_RESTORE(ctx);
free(ctx);
ignore:
return;
}
int uci_set_confdir(struct uci_context *ctx, const char *dir)
{
char *cdir;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, dir != NULL);
cdir = uci_strdup(ctx, dir);
if (ctx->confdir != uci_confdir)
free(ctx->confdir);
ctx->confdir = cdir;
return 0;
}
__private void uci_cleanup(struct uci_context *ctx)
{
struct uci_parse_context *pctx;
if (ctx->buf) {
free(ctx->buf);
ctx->buf = NULL;
ctx->bufsz = 0;
}
pctx = ctx->pctx;
if (!pctx)
return;
ctx->pctx = NULL;
if (pctx->package)
uci_free_package(&pctx->package);
if (pctx->buf)
free(pctx->buf);
free(pctx);
}
void
uci_perror(struct uci_context *ctx, const char *str)
{
uci_get_errorstr(ctx, NULL, str);
}
void
uci_get_errorstr(struct uci_context *ctx, char **dest, const char *prefix)
{
static char error_info[128] = { 0 };
int err;
err = ctx ? ctx->err : UCI_ERR_INVAL;
if ((err < 0) || (err >= UCI_ERR_LAST))
err = UCI_ERR_UNKNOWN;
if (ctx && ctx->pctx && (err == UCI_ERR_PARSE)) {
snprintf(error_info, sizeof(error_info) - 1, " (%s) at line %d, byte %zu",
(ctx->pctx->reason ? ctx->pctx->reason : "unknown"),
ctx->pctx->line, ctx->pctx->byte);
}
if (!dest) {
strcat(error_info, "\n");
fprintf(stderr, "%s%s%s%s%s%s",
(prefix ? prefix : ""), (prefix ? ": " : ""),
(ctx && ctx->func ? ctx->func : ""), (ctx && ctx->func ? ": " : ""),
uci_errstr[err],
error_info);
return;
}
err = asprintf(dest, "%s%s%s%s%s%s",
(prefix ? prefix : ""), (prefix ? ": " : ""),
(ctx && ctx->func ? ctx->func : ""), (ctx && ctx->func ? ": " : ""),
uci_errstr[err],
error_info);
if (err < 0)
*dest = NULL;
}
int uci_list_configs(struct uci_context *ctx, char ***list)
{
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, list != NULL);
UCI_ASSERT(ctx, ctx->backend && ctx->backend->list_configs);
*list = ctx->backend->list_configs(ctx);
return 0;
}
int uci_commit(struct uci_context *ctx, struct uci_package **package, bool overwrite)
{
struct uci_package *p;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, package != NULL);
p = *package;
UCI_ASSERT(ctx, p != NULL);
UCI_ASSERT(ctx, p->backend && p->backend->commit);
p->backend->commit(ctx, package, overwrite);
return 0;
}
int uci_load(struct uci_context *ctx, const char *name, struct uci_package **package)
{
struct uci_package *p;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, ctx->backend && ctx->backend->load);
p = ctx->backend->load(ctx, name);
if (package)
*package = p;
return 0;
}
int uci_set_backend(struct uci_context *ctx, const char *name)
{
struct uci_element *e;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, name != NULL);
e = uci_lookup_list(&ctx->backends, name);
if (!e)
UCI_THROW(ctx, UCI_ERR_NOTFOUND);
ctx->backend = uci_to_backend(e);
return 0;
}
|
