From 204782b2f34b3629f8c0cb953eb390f94a9a7582 Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Thu, 12 Aug 2021 23:38:59 +0200
Subject: img4: Check component entries in build identity for IMG4 tags
 (Img4PayloadType)

---
 src/idevicerestore.c |  2 +-
 src/img4.c           | 19 +++++++++++++++++--
 src/img4.h           |  2 +-
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/idevicerestore.c b/src/idevicerestore.c
index fa25ff4..9805f65 100644
--- a/src/idevicerestore.c
+++ b/src/idevicerestore.c
@@ -2115,7 +2115,7 @@ int get_preboard_manifest(struct idevicerestore_client_t* client, plist_t build_
 	}
 
 	plist_t local_manifest = NULL;
-	int res = img4_create_local_manifest(request, &local_manifest);
+	int res = img4_create_local_manifest(request, build_identity, &local_manifest);
 
 	*manifest = local_manifest;
 
diff --git a/src/img4.c b/src/img4.c
index ae29bf3..222e35d 100644
--- a/src/img4.c
+++ b/src/img4.c
@@ -615,7 +615,7 @@ static void _manifest_write_component(unsigned char **p, unsigned int *length, c
 	*p += this_length + outer_length + inner_length;
 }
 
-int img4_create_local_manifest(plist_t request, plist_t* manifest)
+int img4_create_local_manifest(plist_t request, plist_t build_identity, plist_t* manifest)
 {
 	if (!request || !manifest) {
 		return -1;
@@ -655,6 +655,11 @@ int img4_create_local_manifest(plist_t request, plist_t* manifest)
 	/* create manifest properties set */
 	_manifest_write_key_value(&p, &length, "MANP", ASN1_SET | ASN1_CONSTRUCTED, tmp_, tmp_len);
 
+	plist_t component_manifest = NULL;
+	if (build_identity) {
+		component_manifest = plist_dict_get_item(build_identity, "Manifest");
+	}
+
 	/* now write the components */
 	plist_dict_iter iter = NULL;
 	plist_dict_new_iter(request, &iter);
@@ -663,7 +668,17 @@ int img4_create_local_manifest(plist_t request, plist_t* manifest)
 	do {
 		plist_dict_next_item(request, iter, &key, &val);
 		if (val && plist_get_node_type(val) == PLIST_DICT) {
-			const char *comp = _img4_get_component_tag(key);
+			const char *comp = NULL;
+			/* check if component has Img4PayloadType */
+			if (component_manifest) {
+				plist_t img4_comp = plist_access_path(component_manifest, 3, key, "Info", "Img4PayloadType");
+				if (img4_comp) {
+					comp = plist_get_string_ptr(img4_comp, NULL);
+				}
+			}
+			if (!comp) {
+				comp = _img4_get_component_tag(key);
+			}
 			if (!comp) {
 				error("ERROR: %s: Unhandled component '%s' - can't create manifest\n", __func__, key);
 				free(iter);
diff --git a/src/img4.h b/src/img4.h
index ffbd57d..37dea56 100644
--- a/src/img4.h
+++ b/src/img4.h
@@ -27,7 +27,7 @@ extern "C" {
 #endif
 
 int img4_stitch_component(const char* component_name, const unsigned char* component_data, unsigned int component_size, const unsigned char* blob, unsigned int blob_size, unsigned char** img4_data, unsigned int *img4_size);
-int img4_create_local_manifest(plist_t request, plist_t* manifest);
+int img4_create_local_manifest(plist_t request, plist_t build_identity, plist_t* manifest);
 
 #ifdef __cplusplus
 }
-- 
cgit v1.1-32-gdbae