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.
17 /* initialize a list head/item */
18 static inline void uci_list_init(struct uci_list *ptr)
24 /* inserts a new list entry between two consecutive entries */
25 static inline void uci_list_insert(struct uci_list *list, struct uci_list *ptr)
27 list->next->prev = ptr;
29 ptr->next = list->next;
33 /* inserts a new list entry at the tail of the list */
34 static inline void uci_list_add(struct uci_list *head, struct uci_list *ptr)
36 /* NB: head->prev points at the tail */
37 uci_list_insert(head->prev, ptr);
40 static inline void uci_list_del(struct uci_list *ptr)
42 struct uci_list *next, *prev;
53 static struct uci_element *
54 uci_alloc_generic(struct uci_context *ctx, int type, const char *name, int size)
56 struct uci_element *e;
59 ptr = uci_malloc(ctx, size + strlen(name) + 1);
60 e = (struct uci_element *) ptr;
62 e->name = (char *) ptr + size;
63 strcpy(e->name, name);
64 uci_list_init(&e->list);
70 uci_free_element(struct uci_element *e)
75 if (!uci_list_empty(&e->list))
76 uci_list_del(&e->list);
80 static struct uci_option *
81 uci_alloc_option(struct uci_section *s, const char *name, const char *value)
83 struct uci_package *p = s->package;
84 struct uci_context *ctx = p->ctx;
87 o = uci_alloc_element(ctx, option, name, strlen(value) + 1);
88 o->value = uci_dataptr(o);
90 strcpy(o->value, value);
91 uci_list_add(&s->options, &o->e.list);
97 uci_free_option(struct uci_option *o)
99 uci_free_element(&o->e);
102 static struct uci_section *
103 uci_alloc_section(struct uci_package *p, const char *type, const char *name)
105 struct uci_context *ctx = p->ctx;
106 struct uci_section *s;
109 if (!name || !name[0]) {
110 snprintf(buf, 16, "cfg%d", p->n_section);
114 s = uci_alloc_element(ctx, section, name, strlen(type) + 1);
115 s->type = uci_dataptr(s);
117 strcpy(s->type, type);
118 uci_list_init(&s->options);
119 uci_list_add(&p->sections, &s->e.list);
125 uci_free_section(struct uci_section *s)
127 struct uci_element *o, *tmp;
129 uci_foreach_element_safe(&s->options, tmp, o) {
130 uci_free_option(uci_to_option(o));
132 uci_free_element(&s->e);
135 static struct uci_package *
136 uci_alloc_package(struct uci_context *ctx, const char *name)
138 struct uci_package *p;
140 p = uci_alloc_element(ctx, package, name, 0);
142 uci_list_init(&p->sections);
147 uci_free_package(struct uci_package *p)
149 struct uci_element *e, *tmp;
154 uci_foreach_element_safe(&p->sections, tmp, e) {
155 uci_free_section(uci_to_section(e));
157 uci_free_element(&p->e);
160 static struct uci_element *uci_lookup_list(struct uci_context *ctx, struct uci_list *list, char *name)
162 struct uci_element *e;
164 uci_foreach_element(list, e) {
165 if (!strcmp(e->name, name))
168 UCI_THROW(ctx, UCI_ERR_NOTFOUND);
171 int uci_lookup(struct uci_context *ctx, struct uci_element **res, char *package, char *section, char *option)
173 struct uci_element *e;
174 struct uci_package *p;
175 struct uci_section *s;
176 struct uci_option *o;
179 UCI_ASSERT(ctx, res != NULL);
180 UCI_ASSERT(ctx, package != NULL);
182 e = uci_lookup_list(ctx, &ctx->root, package);
186 p = uci_to_package(e);
187 e = uci_lookup_list(ctx, &p->sections, section);
191 s = uci_to_section(e);
192 e = uci_lookup_list(ctx, &s->options, option);
199 int uci_unload(struct uci_context *ctx, const char *name)
201 struct uci_element *e;
204 UCI_ASSERT(ctx, name != NULL);
206 uci_foreach_element(&ctx->root, e) {
207 if (!strcmp(e->name, name))
210 UCI_THROW(ctx, UCI_ERR_NOTFOUND);
213 uci_free_package(uci_to_package(e));
218 static inline char *get_filename(char *path)
222 p = strrchr(path, '/');
229 char **uci_list_configs(struct uci_context *ctx)
236 if (glob(UCI_CONFDIR "/*", GLOB_MARK, NULL, &globbuf) != 0)
239 size = sizeof(char *) * (globbuf.gl_pathc + 1);
240 for(i = 0; i < globbuf.gl_pathc; i++) {
243 p = get_filename(globbuf.gl_pathv[i]);
247 size += strlen(p) + 1;
250 configs = malloc(size);
254 memset(configs, 0, size);
255 buf = (char *) &configs[globbuf.gl_pathc + 1];
256 for(i = 0; i < globbuf.gl_pathc; i++) {
259 p = get_filename(globbuf.gl_pathv[i]);
265 buf += strlen(buf) + 1;