uci_free_element(&o->e);
}
+/* fix up an unnamed section, e.g. after adding options to it */
+static void uci_fixup_section(struct uci_context *ctx, struct uci_section *s)
+{
+ unsigned int hash = ~0;
+ struct uci_element *e;
+ char buf[16];
+
+ if (!s || s->e.name)
+ return;
+
+ /*
+ * Generate a name for unnamed sections. This is used as reference
+ * when locating or updating the section from apps/scripts.
+ * To make multiple concurrent versions somewhat safe for updating,
+ * the name is generated from a hash of its type and name/value
+ * pairs of its option, and it is prefixed by a counter value.
+ * If the order of the unnamed sections changes for some reason,
+ * updates to them will be rejected.
+ */
+ hash = djbhash(hash, s->type);
+ uci_foreach_element(&s->options, e) {
+ hash = djbhash(hash, e->name);
+ hash = djbhash(hash, uci_to_option(e)->value);
+ }
+ sprintf(buf, "cfg%02x%04x", ++s->package->n_section, hash % (1 << 16));
+ s->e.name = uci_strdup(ctx, buf);
+}
+
static struct uci_section *
uci_alloc_section(struct uci_package *p, const char *type, const char *name)
{
strcpy(s->type, type);
if (name == NULL)
s->anonymous = true;
+ p->n_section++;
uci_list_add(&p->sections, &s->e.list);
uci_free_element(&s->e);
}
-static struct uci_package *
+__plugin struct uci_package *
uci_alloc_package(struct uci_context *ctx, const char *name)
{
struct uci_package *p;
*package = NULL;
}
-static struct uci_element *uci_lookup_list(struct uci_context *ctx, struct uci_list *list, const char *name)
+static struct uci_element *uci_lookup_list(struct uci_list *list, const char *name)
{
struct uci_element *e;
UCI_HANDLE_ERR(ctx);
UCI_ASSERT(ctx, res != NULL);
UCI_ASSERT(ctx, p != NULL);
- UCI_ASSERT(ctx, uci_validate_name(section));
+ UCI_ASSERT(ctx, section && uci_validate_name(section));
if (option)
UCI_ASSERT(ctx, uci_validate_name(option));
- e = uci_lookup_list(ctx, &p->sections, section);
+ e = uci_lookup_list(&p->sections, section);
if (!e)
goto notfound;
if (option) {
s = uci_to_section(e);
- e = uci_lookup_list(ctx, &s->options, option);
+ e = uci_lookup_list(&s->options, option);
+ if (!e)
+ goto notfound;
}
*res = e;
}
p = s->package;
- if (!internal && p->confdir)
+ if (!internal && p->has_history)
uci_add_history(ctx, &p->history, UCI_CMD_REMOVE, s->e.name, option, NULL);
switch(e->type) {
return 0;
}
p = s->package;
- if (!internal && p->confdir)
+ if (!internal && p->has_history)
uci_add_history(ctx, &p->history, UCI_CMD_CHANGE, section, option, value);
uci_list_del(&e->list);
/* NB: p, section, option validated by uci_lookup */
UCI_INTERNAL(uci_lookup, ctx, &e, p, section, option);
- if (!internal && p->confdir)
+ if (!internal && p->has_history)
uci_add_history(ctx, &p->history, UCI_CMD_RENAME, section, option, name);
name = uci_strdup(ctx, name);
return 0;
}
+int uci_add_section(struct uci_context *ctx, struct uci_package *p, char *type, struct uci_section **res)
+{
+ bool internal = ctx->internal;
+ struct uci_section *s;
+
+ UCI_HANDLE_ERR(ctx);
+ UCI_ASSERT(ctx, p != NULL);
+ s = uci_alloc_section(p, type, NULL);
+ uci_fixup_section(ctx, s);
+ *res = s;
+ if (!internal && p->has_history)
+ uci_add_history(ctx, &p->history, UCI_CMD_ADD, s->e.name, NULL, type);
+
+ return 0;
+}
int uci_delete(struct uci_context *ctx, struct uci_package *p, char *section, char *option)
{
return uci_del_element(ctx, e);
}
-int uci_set(struct uci_context *ctx, struct uci_package *p, char *section, char *option, char *value)
+int uci_set(struct uci_context *ctx, struct uci_package *p, char *section, char *option, char *value, struct uci_element **result)
{
/* NB: UCI_INTERNAL use means without history tracking */
bool internal = ctx->internal;
* if the section/option is to be modified and it is not found
* create a new element in the appropriate list
*/
- e = uci_lookup_list(ctx, &p->sections, section);
+ e = uci_lookup_list(&p->sections, section);
if (!e)
goto notfound;
ctx->pctx->section = s;
if (option) {
- e = uci_lookup_list(ctx, &s->options, option);
+ e = uci_lookup_list(&s->options, option);
if (!e)
goto notfound;
o = uci_to_option(e);
e = &o->e;
else
e = &s->e;
+ if (result)
+ *result = e;
+ else
+ result = &e;
ctx->internal = internal;
- return uci_set_element_value(ctx, &e, value);
+ return uci_set_element_value(ctx, result, value);
notfound:
/*
UCI_THROW(ctx, UCI_ERR_NOTFOUND);
/* now add the missing entry */
- if (!internal && p->confdir)
- uci_add_history(ctx, &p->history, UCI_CMD_ADD, section, option, value);
- if (s)
- uci_alloc_option(s, option, value);
- else {
+ if (!internal && p->has_history)
+ uci_add_history(ctx, &p->history, UCI_CMD_CHANGE, section, option, value);
+ if (s) {
+ o = uci_alloc_option(s, option, value);
+ if (result)
+ *result = &o->e;
+ } else {
s = uci_alloc_section(p, value, section);
+ if (result)
+ *result = &s->e;
if (ctx->pctx && ctx->pctx->merge)
ctx->pctx->section = s;
}