Adds the iphone_afc_truncate function and fixes a small log_debug issue.

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

1 files changed, 48 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;