Adds the iphone_afc_truncate function and fixes a small log_debug issue.

Signed-off-by: Matt Colyer <matt@colyer.name>

2 files changed, 49 insertions, 1 deletions

diff --git a/src/AFC.c b/src/AFC.c
index cd24cc6..dc8fe20 100644
--- a/src/AFC.c
+++ b/src/AFC.c
@@ -179,7 +179,7 @@ static int dispatch_AFC_packet(iphone_afc_client_t client, const char *data, int
 		log_debug_msg("dispatch_AFC_packet: sent the first now go with the second\n");
 		log_debug_msg("Length: %i\n", length - offset);
 		log_debug_msg("Buffer: \n");
-		log_debug_msg(data + offset);
+		log_debug_buffer(data + offset, length - offset);
 
 		iphone_mux_send(client->connection, data + offset, length - offset, &bytes);
 		return bytes;
@@ -1017,6 +1017,53 @@ iphone_error_t iphone_afc_truncate_file(iphone_afc_client_t client, iphone_afc_f
 	}
 }
 
+/** Sets the size of a file on the phone without prior opening it.
+ * 
+ * @param client The client to use to set the file size.
+ * @param path The path of the file to be truncated.
+ * @param newsize The size to set the file to. 
+ * 
+ * @return IPHONE_E_SUCCESS if everything went well, IPHONE_E_INVALID_ARG
+ *         if arguments are NULL or invalid, IPHONE_E_NOT_ENOUGH_DATA otherwise.
+ */
+iphone_error_t iphone_afc_truncate(iphone_afc_client_t client, const char *path, off_t newsize)
+{
+	char *response = NULL;
+	char *send = (char *) malloc(sizeof(char) * (strlen(path) + 1 + 8));
+	int bytes = 0;
+	uint64_t size_requested = newsize;
+
+	if (!client || !path || !client->afc_packet || !client->connection)
+		return IPHONE_E_INVALID_ARG;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(send, &size_requested, 8);
+	memcpy(send + 8, path, strlen(path) + 1);
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	client->afc_packet->operation = AFC_TRUNCATE;
+	bytes = dispatch_AFC_packet(client, send, 8 + strlen(path));
+	free(send);
+	if (bytes <= 0) {
+		afc_unlock(client);
+		return IPHONE_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	bytes = receive_AFC_data(client, &response);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	if (bytes < 0) {
+		return IPHONE_E_NOT_ENOUGH_DATA;
+	} else {
+		return IPHONE_E_SUCCESS;
+	}
+}
+
+
 uint32 iphone_afc_get_file_handle(iphone_afc_file_t file)
 {
 	return file->filehandle;
diff --git a/src/AFC.h b/src/AFC.h
index 463c13e..de4e071 100644
--- a/src/AFC.h
+++ b/src/AFC.h
@@ -63,6 +63,7 @@ enum {
 	AFC_LIST_DIR = 0x00000003,
 	AFC_MAKE_DIR = 0x00000009,
 	AFC_DELETE = 0x00000008,
+	AFC_TRUNCATE = 0x00000007,
 	AFC_RENAME = 0x00000018,
 	AFC_SUCCESS_RESPONSE = 0x00000002,
 	AFC_FILE_OPEN = 0x0000000d,