#include <string.h>
#include <stdlib.h>
#include <stdio.h>
+#include <dlfcn.h>
+#include <glob.h>
#include "uci.h"
-#include "err.h"
static const char *uci_confdir = UCI_CONFDIR;
static const char *uci_savedir = UCI_SAVEDIR;
[UCI_ERR_UNKNOWN] = "Unknown error",
};
-#include "util.c"
+static void uci_unload_plugin(struct uci_context *ctx, struct uci_plugin *p);
+
+#include "uci_internal.h"
#include "list.c"
-#include "file.c"
+#include "delta.c"
/* exported functions */
struct uci_context *uci_alloc_context(void)
struct uci_context *ctx;
ctx = (struct uci_context *) malloc(sizeof(struct uci_context));
+ if (!ctx)
+ return NULL;
+
memset(ctx, 0, sizeof(struct uci_context));
uci_list_init(&ctx->root);
- uci_list_init(&ctx->history_path);
- ctx->flags = UCI_FLAG_STRICT;
+ uci_list_init(&ctx->delta_path);
+ uci_list_init(&ctx->backends);
+ uci_list_init(&ctx->hooks);
+ uci_list_init(&ctx->plugins);
+ ctx->flags = UCI_FLAG_STRICT | UCI_FLAG_SAVED_DELTA;
ctx->confdir = (char *) uci_confdir;
ctx->savedir = (char *) uci_savedir;
+ uci_list_add(&ctx->backends, &uci_file_backend.e.list);
+ ctx->backend = &uci_file_backend;
+
return ctx;
}
if (ctx->savedir != uci_savedir)
free(ctx->savedir);
- UCI_TRAP_SAVE(ctx, ignore);
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->history_path, tmp, e) {
+ uci_foreach_element_safe(&ctx->delta_path, tmp, e) {
uci_free_element(e);
}
- free(ctx);
UCI_TRAP_RESTORE(ctx);
+ uci_foreach_element_safe(&ctx->root, tmp, e) {
+ uci_unload_plugin(ctx, uci_to_plugin(e));
+ }
+ free(ctx);
ignore:
return;
}
-int uci_add_history_path(struct uci_context *ctx, const char *dir)
-{
- struct uci_element *e;
-
- UCI_HANDLE_ERR(ctx);
- UCI_ASSERT(ctx, dir != NULL);
- e = uci_alloc_generic(ctx, UCI_TYPE_PATH, dir, sizeof(struct uci_element));
- uci_list_add(&ctx->history_path, &e->list);
-
- return 0;
-}
-
int uci_set_confdir(struct uci_context *ctx, const char *dir)
{
char *cdir;
return 0;
}
-int uci_set_savedir(struct uci_context *ctx, const char *dir)
+__private void uci_cleanup(struct uci_context *ctx)
{
- char *sdir;
+ struct uci_parse_context *pctx;
- UCI_HANDLE_ERR(ctx);
- UCI_ASSERT(ctx, dir != NULL);
+ if (ctx->buf) {
+ free(ctx->buf);
+ ctx->buf = NULL;
+ ctx->bufsz = 0;
+ }
- sdir = uci_strdup(ctx, dir);
- if (ctx->savedir != uci_savedir)
- free(ctx->savedir);
- ctx->savedir = sdir;
- return 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);
}
-int uci_cleanup(struct uci_context *ctx)
+void
+uci_perror(struct uci_context *ctx, const char *str)
{
- UCI_HANDLE_ERR(ctx);
- uci_file_cleanup(ctx);
- return 0;
+ uci_get_errorstr(ctx, NULL, str);
}
-void uci_perror(struct uci_context *ctx, const char *prefix)
+void
+uci_get_errorstr(struct uci_context *ctx, char **dest, const char *prefix)
{
+ static char error_info[128];
int err;
+ const char *format =
+ "%s%s" /* prefix */
+ "%s%s" /* function */
+ "%s" /* error */
+ "%s"; /* details */
+
+ error_info[0] = 0;
if (!ctx)
err = UCI_ERR_INVAL;
else
- err = ctx->errno;
+ err = ctx->err;
if ((err < 0) || (err >= UCI_ERR_LAST))
err = UCI_ERR_UNKNOWN;
- if (prefix)
- fprintf(stderr, "%s: ", prefix);
- if (ctx->func)
- fprintf(stderr, "%s: ", ctx->func);
-
switch (err) {
case UCI_ERR_PARSE:
if (ctx->pctx) {
- 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);
+ snprintf(error_info, sizeof(error_info) - 1, " (%s) at line %d, byte %d", (ctx->pctx->reason ? ctx->pctx->reason : "unknown"), ctx->pctx->line, ctx->pctx->byte);
break;
}
- /* fall through */
+ break;
default:
- fprintf(stderr, "%s\n", uci_errstr[err]);
break;
}
+ if (dest) {
+ err = asprintf(dest, format,
+ (prefix ? prefix : ""), (prefix ? ": " : ""),
+ (ctx->func ? ctx->func : ""), (ctx->func ? ": " : ""),
+ uci_errstr[err],
+ error_info);
+ if (err < 0)
+ *dest = NULL;
+ } else {
+ strcat(error_info, "\n");
+ fprintf(stderr, format,
+ (prefix ? prefix : ""), (prefix ? ": " : ""),
+ (ctx->func ? ctx->func : ""), (ctx->func ? ": " : ""),
+ uci_errstr[err],
+ error_info);
+ }
+}
+
+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;
+ struct uci_element *e;
+
+ UCI_HANDLE_ERR(ctx);
+ UCI_ASSERT(ctx, ctx->backend && ctx->backend->load);
+ p = ctx->backend->load(ctx, name);
+ uci_foreach_element(&ctx->hooks, e) {
+ struct uci_hook *h = uci_to_hook(e);
+ if (h->ops->load)
+ h->ops->load(h->ops, p);
+ }
+ if (package)
+ *package = p;
+
+ return 0;
+}
+
+#ifdef UCI_PLUGIN_SUPPORT
+
+__plugin int uci_add_backend(struct uci_context *ctx, struct uci_backend *b)
+{
+ struct uci_element *e;
+ UCI_HANDLE_ERR(ctx);
+
+ e = uci_lookup_list(&ctx->backends, b->e.name);
+ if (e)
+ UCI_THROW(ctx, UCI_ERR_DUPLICATE);
+
+ e = uci_malloc(ctx, sizeof(struct uci_backend));
+ memcpy(e, b, sizeof(struct uci_backend));
+
+ uci_list_add(&ctx->backends, &e->list);
+ return 0;
+}
+
+__plugin int uci_del_backend(struct uci_context *ctx, struct uci_backend *b)
+{
+ struct uci_element *e, *tmp;
+
+ UCI_HANDLE_ERR(ctx);
+
+ e = uci_lookup_list(&ctx->backends, b->e.name);
+ if (!e || uci_to_backend(e)->ptr != b->ptr)
+ UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+ b = uci_to_backend(e);
+
+ if (ctx->backend && ctx->backend->ptr == b->ptr)
+ ctx->backend = &uci_file_backend;
+
+ uci_foreach_element_safe(&ctx->root, tmp, e) {
+ struct uci_package *p = uci_to_package(e);
+
+ if (!p->backend)
+ continue;
+
+ if (p->backend->ptr == b->ptr)
+ UCI_INTERNAL(uci_unload, ctx, p);
+ }
+
+ uci_list_del(&b->e.list);
+ free(b);
+
+ return 0;
+}
+
+#endif
+
+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;
+}
+
+int uci_add_hook(struct uci_context *ctx, const struct uci_hook_ops *ops)
+{
+ struct uci_element *e;
+ struct uci_hook *h;
+
+ UCI_HANDLE_ERR(ctx);
+
+ /* check for duplicate elements */
+ uci_foreach_element(&ctx->hooks, e) {
+ h = uci_to_hook(e);
+ if (h->ops == ops)
+ return UCI_ERR_INVAL;
+ }
+
+ h = uci_alloc_element(ctx, hook, "", 0);
+ h->ops = ops;
+ uci_list_init(&h->e.list);
+ uci_list_add(&ctx->hooks, &h->e.list);
+
+ return 0;
+}
+
+int uci_remove_hook(struct uci_context *ctx, const struct uci_hook_ops *ops)
+{
+ struct uci_element *e;
+
+ uci_foreach_element(&ctx->hooks, e) {
+ struct uci_hook *h = uci_to_hook(e);
+ if (h->ops == ops) {
+ uci_list_del(&e->list);
+ return 0;
+ }
+ }
+ return UCI_ERR_NOTFOUND;
}
+int uci_load_plugin(struct uci_context *ctx, const char *filename)
+{
+ struct uci_plugin *p;
+ const struct uci_plugin_ops *ops;
+ void *dlh;
+
+ UCI_HANDLE_ERR(ctx);
+ dlh = dlopen(filename, RTLD_GLOBAL|RTLD_NOW);
+ if (!dlh)
+ UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+ ops = dlsym(dlh, "uci_plugin");
+ if (!ops || !ops->attach || (ops->attach(ctx) != 0)) {
+ if (!ops)
+ fprintf(stderr, "No ops\n");
+ else if (!ops->attach)
+ fprintf(stderr, "No attach\n");
+ else
+ fprintf(stderr, "Other weirdness\n");
+ dlclose(dlh);
+ UCI_THROW(ctx, UCI_ERR_INVAL);
+ }
+
+ p = uci_alloc_element(ctx, plugin, filename, 0);
+ p->dlh = dlh;
+ p->ops = ops;
+ uci_list_add(&ctx->plugins, &p->e.list);
+
+ return 0;
+}
+
+static void uci_unload_plugin(struct uci_context *ctx, struct uci_plugin *p)
+{
+ if (p->ops->detach)
+ p->ops->detach(ctx);
+ dlclose(p->dlh);
+ uci_free_element(&p->e);
+}
+
+int uci_load_plugins(struct uci_context *ctx, const char *pattern)
+{
+ glob_t gl;
+ int i;
+
+ if (!pattern)
+ pattern = UCI_PREFIX "/lib/uci_*.so";
+
+ memset(&gl, 0, sizeof(gl));
+ glob(pattern, 0, NULL, &gl);
+ for (i = 0; i < gl.gl_pathc; i++)
+ uci_load_plugin(ctx, gl.gl_pathv[i]);
+
+ return 0;
+}
projects / project / uci.git / blobdiff