return NULL;
}
+int uci_lookup_ext(struct uci_context *ctx, struct uci_element **res, char *ptr)
+{
+ struct uci_package *p = NULL;
+ struct uci_element *e;
+ struct uci_section *s;
+ char *package = NULL;
+ char *section = NULL;
+ char *option = NULL;
+ char *idxstr, *t;
+ int idx, c;
+
+ UCI_HANDLE_ERR(ctx);
+ UCI_ASSERT(ctx, res != NULL);
+ UCI_ASSERT(ctx, ptr != NULL);
+
+ UCI_INTERNAL(uci_parse_tuple, ctx, ptr, &package, §ion, &option, NULL);
+
+ /* look up the package first */
+ e = uci_lookup_list(&ctx->root, package);
+ if (!e) {
+ UCI_INTERNAL(uci_load, ctx, package, &p);
+ if (!p)
+ goto notfound;
+ e = &p->e;
+ } else {
+ p = uci_to_package(e);
+ }
+
+ if (!section)
+ goto done;
+
+ /* if the section name validates as a regular name, pass through
+ * to the regular uci_lookup function call */
+ if (!*section || uci_validate_name(section)) {
+ UCI_INTERNAL(uci_lookup, ctx, &e, p, section, option);
+ goto done;
+ }
+
+ /* name did not validate, that means we have an extended lookup call
+ * parse it here. for now only the section index syntax is supported */
+ if (section[0] != '@')
+ goto error;
+
+ section++;
+
+ /* parse the section index part */
+ idxstr = strchr(section, '[');
+ if (!idxstr)
+ goto error;
+ *idxstr = 0;
+ idxstr++;
+
+ t = strchr(idxstr, ']');
+ if (!t)
+ goto error;
+ if (t[1] != 0)
+ goto error;
+ *t = 0;
+
+ t = NULL;
+ idx = strtol(idxstr, &t, 10);
+ if (t && *t)
+ goto error;
+
+ if (!*section)
+ section = NULL;
+ if (section && !uci_validate_str(section, false))
+ goto error;
+
+ /* if the given index is negative, it specifies the section number from
+ * the end of the list */
+ if (idx < 0) {
+ c = 0;
+ uci_foreach_element(&p->sections, e) {
+ s = uci_to_section(e);
+ if (section && (strcmp(s->type, section) != 0))
+ continue;
+
+ c++;
+ }
+ idx += c;
+ }
+
+ c = 0;
+ uci_foreach_element(&p->sections, e) {
+ s = uci_to_section(e);
+ if (section && (strcmp(s->type, section) != 0))
+ continue;
+
+ if (idx == c)
+ goto found;
+ c++;
+ }
+ goto notfound;
+
+found:
+ if (option)
+ e = uci_lookup_list(&s->options, option);
+done:
+ *res = e;
+ return 0;
+
+notfound:
+ UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+error:
+ UCI_THROW(ctx, UCI_ERR_INVAL);
+ return 0;
+}
+
int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *p, const char *section, const char *option)
{
struct uci_element *e;
struct uci_element *e;
struct uci_package *p;
struct uci_section *s;
+ struct uci_option *o;
char *section;
char *option;
char *str;
s = uci_to_section(e);
section = e->name;
option = NULL;
+ /* matches the currently set value */
+ if (!strcmp(value, s->type))
+ return 0;
break;
case UCI_TYPE_OPTION:
UCI_ASSERT(ctx, value != NULL);
size = sizeof(struct uci_option);
- s = uci_to_option(e)->section;
+ o = uci_to_option(e);
+ s = o->section;
section = s->e.name;
- option = e->name;
+ option = o->e.name;
+ /* matches the currently set value */
+ if (!strcmp(value, o->value))
+ return 0;
break;
default:
UCI_THROW(ctx, UCI_ERR_INVAL);