allow accessing files outside of /etc/config

diff --git a/cli.c b/cli.c
index 9530198..8ab3850 100644 (file)
--- a/cli.c
+++ b/cli.c
@@ -65,14 +65,24 @@ static int uci_show(int argc, char **argv)
        if (!configs)
                return 0;
 
+       if (argc >= 2) {
+               if (uci_load(ctx, argv[1], &package) != UCI_OK) {
+                       uci_perror(ctx, NULL);
+                       return 1;
+               }
+               uci_show_package(package, section);
+               uci_unload(ctx, package);
+               return 0;
+       }
+
        for (p = configs; *p; p++) {
                if ((argc < 2) || !strcmp(argv[1], *p)) {
                        if (uci_load(ctx, *p, &package) != UCI_OK) {
-                               uci_perror(ctx, "uci_load");
-                               return 255;
+                               uci_perror(ctx, NULL);
+                               return 1;
                        }
                        uci_show_package(package, section);
-                       uci_unload(ctx, *p);
+                       uci_unload(ctx, package);
                }
        }
 
@@ -96,7 +106,7 @@ static int uci_do_export(int argc, char **argv)
                        if (ret)
                                continue;
                        uci_export(ctx, stdout, package);
-                       uci_unload(ctx, *p);
+                       uci_unload(ctx, package);
                }
        }
        return 0;
@@ -154,7 +164,7 @@ static int uci_do_get(int argc, char **argv)
                return 1;
        }
 
-       if (uci_lookup(ctx, &e, package, section, option) != UCI_OK)
+       if (uci_lookup(ctx, &e, p, section, option) != UCI_OK)
                return 1;
 
        switch(e->type) {

diff --git a/file.c b/file.c
index 4a56b8a..6eaa5ec 100644 (file)
--- a/file.c
+++ b/file.c
@@ -275,6 +275,7 @@ static void assert_eol(struct uci_context *ctx, char **str)
 static void uci_switch_config(struct uci_context *ctx)
 {
        struct uci_parse_context *pctx;
+       struct uci_element *e;
        const char *name;
 
        pctx = ctx->pctx;
@@ -296,7 +297,9 @@ static void uci_switch_config(struct uci_context *ctx)
         * ignore errors here, e.g. if the config was not found
         */
        UCI_TRAP_SAVE(ctx, ignore);
-       uci_unload(ctx, name);
+       e = uci_lookup_list(ctx, &ctx->root, name);
+       if (e)
+               uci_unload(ctx, uci_to_package(e));
        UCI_TRAP_RESTORE(ctx);
 ignore:
        ctx->errno = 0;
@@ -530,7 +533,7 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
 {
        struct stat statbuf;
        char *filename;
-       bool confpath;
+       bool confdir;
        FILE *file;
        int fd;
 
@@ -539,15 +542,19 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
 
        switch (name[0]) {
        case '.':
+               if (name[1] != '/')
+                       UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+               /* fall through */
        case '/':
                /* absolute/relative path outside of /etc/config */
-               filename = (char *) name;
-               confpath = false;
+               filename = uci_strdup(ctx, name);
+               name = strrchr(name, '/') + 1;
+               confdir = false;
                break;
        default:
                filename = uci_malloc(ctx, strlen(name) + sizeof(UCI_CONFDIR) + 2);
                sprintf(filename, UCI_CONFDIR "/%s", name);
-               confpath = true;
+               confdir = true;
                break;
        }
 
@@ -557,8 +564,8 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
        }
 
        fd = open(filename, O_RDONLY);
-       if (filename != name)
-               free(filename);
+       if (fd <= 0)
+               UCI_THROW(ctx, UCI_ERR_IO);
 
        flock(fd, LOCK_SH);
        file = fdopen(fd, "r");
@@ -570,6 +577,11 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
        uci_import(ctx, file, name, package);
        UCI_TRAP_RESTORE(ctx);
 
+       if (*package) {
+               (*package)->path = filename;
+               (*package)->confdir = confdir;
+       }
+
 done:
        flock(fd, LOCK_UN);
        fclose(file);

diff --git a/list.c b/list.c
index 5561778..a70c2c5 100644 (file)
--- a/list.c
+++ b/list.c
@@ -153,6 +153,8 @@ uci_free_package(struct uci_package *p)
        if(!p)
                return;
 
+       if (p->path)
+               free(p->path);
        uci_foreach_element_safe(&p->sections, tmp, e) {
                uci_free_section(uci_to_section(e));
        }
@@ -174,7 +176,7 @@ uci_add_history(struct uci_context *ctx, struct uci_package *p, int cmd, char *s
 }
 
 
-static struct uci_element *uci_lookup_list(struct uci_context *ctx, struct uci_list *list, char *name)
+static struct uci_element *uci_lookup_list(struct uci_context *ctx, struct uci_list *list, const char *name)
 {
        struct uci_element *e;
 
@@ -185,22 +187,16 @@ static struct uci_element *uci_lookup_list(struct uci_context *ctx, struct uci_l
        UCI_THROW(ctx, UCI_ERR_NOTFOUND);
 }
 
-int uci_lookup(struct uci_context *ctx, struct uci_element **res, char *package, char *section, char *option)
+int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *p, char *section, char *option)
 {
        struct uci_element *e;
-       struct uci_package *p;
        struct uci_section *s;
        struct uci_option *o;
 
        UCI_HANDLE_ERR(ctx);
        UCI_ASSERT(ctx, res != NULL);
-       UCI_ASSERT(ctx, package != NULL);
+       UCI_ASSERT(ctx, p != NULL);
 
-       e = uci_lookup_list(ctx, &ctx->root, package);
-       if (!section)
-               goto found;
-
-       p = uci_to_package(e);
        e = uci_lookup_list(ctx, &p->sections, section);
        if (!option)
                goto found;
@@ -280,8 +276,6 @@ int uci_set(struct uci_context *ctx, char *package, char *section, char *option,
        UCI_ASSERT(ctx, package != NULL);
        UCI_ASSERT(ctx, section != NULL);
 
-       fprintf(stderr, "uci_set: '%s' '%s' '%s' = '%s'\n", package, section, option, value);
-
        /*
         * look up the package, section and option (if set)
         * if the section/option is to be modified and it is not found
@@ -338,22 +332,14 @@ notfound:
        return 0;
 }
 
-int uci_unload(struct uci_context *ctx, const char *name)
+int uci_unload(struct uci_context *ctx, struct uci_package *p)
 {
        struct uci_element *e;
 
        UCI_HANDLE_ERR(ctx);
-       UCI_ASSERT(ctx, name != NULL);
-
-       uci_foreach_element(&ctx->root, e) {
-               if (!strcmp(e->name, name))
-                       goto found;
-       }
-       UCI_THROW(ctx, UCI_ERR_NOTFOUND);
-
-found:
-       uci_free_package(uci_to_package(e));
+       UCI_ASSERT(ctx, p != NULL);
 
+       uci_free_package(p);
        return 0;
 }
 

diff --git a/uci.h b/uci.h
index 0c79587..4420af7 100644 (file)
--- a/uci.h
+++ b/uci.h
@@ -29,6 +29,7 @@
 #define UCI_DEBUG_TYPECAST
 #endif
 
+#include <stdbool.h>
 #include <setjmp.h>
 #include <stdio.h>
 
@@ -110,9 +111,9 @@ extern int uci_load(struct uci_context *ctx, const char *name, struct uci_packag
  * uci_unload: Unload a config file from the uci context
  *
  * @ctx: uci context
- * @name: name of the config file
+ * @package: pointer to the uci_package struct
  */
-extern int uci_unload(struct uci_context *ctx, const char *name);
+extern int uci_unload(struct uci_context *ctx, struct uci_package *p);
 
 /**
  * uci_cleanup: Clean up after an error
@@ -126,14 +127,14 @@ extern int uci_cleanup(struct uci_context *ctx);
  *
  * @ctx: uci context
  * @res: where to store the result
- * @package: config package
+ * @package: uci_package struct 
  * @section: config section (optional)
  * @option: option to search for (optional)
  *
  * If section is omitted, then a pointer to the config package is returned
  * If option is omitted, then a pointer to the config section is returned
  */
-extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, char *package, char *section, char *option);
+extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *package, char *section, char *option);
 
 /**
  * uci_set_element_value: Replace an element's value with a new one
@@ -214,6 +215,9 @@ struct uci_package
        struct uci_element e;
        struct uci_list sections;
        struct uci_context *ctx;
+       bool confdir;
+       char *path;
+
        /* private: */
        int n_section;
        struct uci_list history;