From fffe2e3972840f3a9be865f950383ebd41f5061d Mon Sep 17 00:00:00 2001
From: Benjamin BOURGEAIS
Date: Thu, 6 May 2021 17:34:29 +0200
Subject: dfu: Add special handling for sending the local policy component

---
 src/dfu.c | 48 ++++++++++++++++++++++++++++++------------------
 1 file changed, 30 insertions(+), 18 deletions(-)

diff --git a/src/dfu.c b/src/dfu.c
index fab05de..f22e254 100644
--- a/src/dfu.c
+++ b/src/dfu.c
@@ -151,34 +151,47 @@ int dfu_send_buffer(struct idevicerestore_client_t* client, unsigned char* buffe
 int dfu_send_component(struct idevicerestore_client_t* client, plist_t build_identity, const char* component) {
 	char* path = NULL;
 
-	if (client->tss) {
-		if (tss_response_get_path_by_entry(client->tss, component, &path) < 0) {
-			debug("NOTE: No path for component %s in TSS, will fetch from build_identity\n", component);
-		}
-	}
-	if (!path) {
-		if (build_identity_get_component_path(build_identity, component, &path) < 0) {
-			error("ERROR: Unable to get path for component '%s'\n", component);
-			free(path);
-			return -1;
-		}
+	// Use a specific TSS ticket for the Ap,LocalPolicy component
+	plist_t tss = client->tss;
+	if (strcmp(component, "Ap,LocalPolicy") == 0) {
+		tss = client->tss_localpolicy;
 	}
 
 	unsigned char* component_data = NULL;
 	unsigned int component_size = 0;
 
-	if (extract_component(client->ipsw, path, &component_data, &component_size) < 0) {
-		error("ERROR: Unable to extract component: %s\n", component);
+	if (strcmp(component, "Ap,LocalPolicy") == 0) {
+		// If Ap,LocalPolicy => Inject an empty policy
+		component_data = malloc(sizeof(lpol_file));
+		component_size = sizeof(lpol_file);
+		memcpy(component_data, lpol_file, component_size);
+	} else {
+		if (tss) {
+			if (tss_response_get_path_by_entry(tss, component, &path) < 0) {
+				debug("NOTE: No path for component %s in TSS, will fetch from build_identity\n", component);
+			}
+		}
+		if (!path) {
+			if (build_identity_get_component_path(build_identity, component, &path) < 0) {
+				error("ERROR: Unable to get path for component '%s'\n", component);
+				free(path);
+				return -1;
+			}
+		}
+
+		if (extract_component(client->ipsw, path, &component_data, &component_size) < 0) {
+			error("ERROR: Unable to extract component: %s\n", component);
+			free(path);
+			return -1;
+		}
 		free(path);
-		return -1;
+		path = NULL;
 	}
-	free(path);
-	path = NULL;
 
 	unsigned char* data = NULL;
 	uint32_t size = 0;
 
-	if (personalize_component(component, component_data, component_size, client->tss, &data, &size) < 0) {
+	if (personalize_component(component, component_data, component_size, tss, &data, &size) < 0) {
 		error("ERROR: Unable to get personalized component: %s\n", component);
 		free(component_data);
 		return -1;
@@ -209,7 +222,6 @@ int dfu_send_component(struct idevicerestore_client_t* client, plist_t build_ide
 
 	info("Sending %s (%d bytes)...\n", component, size);
 
-	// FIXME: Did I do this right????
 	irecv_error_t err = irecv_send_buffer(client->dfu->client, data, size, 1);
 	if (err != IRECV_E_SUCCESS) {
 		error("ERROR: Unable to send %s component: %s\n", component, irecv_strerror(err));
-- 
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