Add build_identity_has_component() helper

2 files changed, 15 insertions, 0 deletions

diff --git a/src/idevicerestore.c b/src/idevicerestore.c
index 1e7cd6f..7f545ed 100644
--- a/src/idevicerestore.c
+++ b/src/idevicerestore.c
@@ -1739,6 +1739,20 @@ void build_identity_print_information(plist_t build_identity) {
 	node = NULL;
 }
 
+int build_identity_has_component(plist_t build_identity, const char* component) {
+	plist_t manifest_node = plist_dict_get_item(build_identity, "Manifest");
+	if (!manifest_node || plist_get_node_type(manifest_node) != PLIST_DICT) {
+		return -1;
+	}
+
+	plist_t component_node = plist_dict_get_item(manifest_node, component);
+	if (!component_node || plist_get_node_type(component_node) != PLIST_DICT) {
+		return -1;
+	}
+
+	return 0;
+}
+
 int build_identity_get_component_path(plist_t build_identity, const char* component, char** path) {
 	char* filename = NULL;
 
diff --git a/src/idevicerestore.h b/src/idevicerestore.h
index b6ca084..4b5ed5d 100644
--- a/src/idevicerestore.h
+++ b/src/idevicerestore.h
@@ -86,6 +86,7 @@ void build_manifest_get_version_information(plist_t build_manifest, struct idevi
 plist_t build_manifest_get_build_identity(plist_t build_manifest, uint32_t identity);
 int build_manifest_get_build_count(plist_t build_manifest);
 void build_identity_print_information(plist_t build_identity);
+int build_identity_has_component(plist_t build_identity, const char* component);
 int build_identity_get_component_path(plist_t build_identity, const char* component, char** path);
 int ipsw_extract_filesystem(const char* ipsw, plist_t build_identity, char** filesystem);
 int extract_component(const char* ipsw, const char* path, unsigned char** component_data, unsigned int* component_size);