Adding uninstallation of widgets

Change-Id: I8558a77312590181de5313c89ea4c9bdb9b477c7
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 102 insertions, 0 deletions

diff --git a/src/wgtpkg-uninstall.c b/src/wgtpkg-uninstall.c
new file mode 100644
index 0000000..7516c3f
--- /dev/null
+++ b/src/wgtpkg-uninstall.c
@@ -0,0 +1,102 @@
+/*
+ Copyright 2015 IoT.bzh
+
+ author: José Bollo <jose.bollo@iot.bzh>
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#define _GNU_SOURCE
+
+#include <limits.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <unistd.h>
+
+#include "verbose.h"
+#include "utils-dir.h"
+#include "secmgr-wrap.h"
+
+/* uninstall the widget of idaver */
+int uninstall_widget(const char *idaver, const char *root)
+{
+	char *id;
+	char *ver;
+	char path[PATH_MAX];
+	const char *at;
+	int rc, rc2;
+
+	NOTICE("-- UNINSTALLING widget of id %s from %s --", idaver, root);
+
+	/* find the last '@' of the id */
+	at = strrchr(idaver, '@');
+	if (at == NULL) {
+		ERROR("bad widget id '%s', no @", idaver);
+		errno = EINVAL;
+		return -1;
+	}
+	id = strndupa(idaver, at - idaver);
+	ver = strdupa(at + 1);
+
+	/* compute the path */
+	rc = snprintf(path, sizeof path, "%s/%s/%s", root, id, ver);
+	if (rc >= sizeof path) {
+		ERROR("bad widget id '%s', too long", idaver);
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* removes the directory of the application */
+	rc = remove_directory(path, 1);
+	if (rc < 0) {
+		ERROR("error while removing directory '%s': %m", path);
+		return -1;
+	}
+
+	/* removes the icon of the application */
+	rc = snprintf(path, sizeof path, "%s/%s", FWK_ICON_DIR, idaver);
+	assert(rc < sizeof path);
+	rc = unlink(path);
+	if (rc < 0)
+		ERROR("can't removing '%s': %m", path);
+
+	/* removes the parent directory if empty */
+	rc2 = snprintf(path, sizeof path, "%s/%s", root, id);
+	assert(rc2 < sizeof path);
+	rc2 = rmdir(path);
+	if (rc < 0 && errno == ENOTEMPTY)
+		return rc;
+	if (rc < 0) {
+		ERROR("error while removing directory '%s': %m", path);
+		return -1;
+	}
+
+	/*
+	 * parent directory removed: last occurrence of the application
+	 * uninstall it for the security-manager
+	 */
+	rc2 = secmgr_init(id);
+	if (rc2) {
+		ERROR("can't init security manager context");
+		return -1;
+	}
+	rc2 = secmgr_uninstall();
+	if (rc2) {
+		ERROR("can't uninstall security manager context");
+		return -1;
+	}
+	return rc;
+}
+