Implement skeleton of MobileSync protocol (handshake and goodbye).

1 files changed, 210 insertions, 0 deletions

diff --git a/src/MobileSync.c b/src/MobileSync.c
new file mode 100644
index 0000000..2e574d2
--- /dev/null
+++ b/src/MobileSync.c
@@ -0,0 +1,210 @@
+/*
+ * MobileSync.c 
+ * Contains functions for the built-in MobileSync client.
+ * 
+ * Copyright (c) 2009 Jonathan Beck All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
+ */
+
+#include "MobileSync.h"
+#include <plist/plist.h>
+#include <string.h>
+
+#define MSYNC_VERSION_INT1 100
+#define MSYNC_VERSION_INT2 100
+
+iphone_error_t iphone_msync_new_client(iphone_device_t device, int src_port, int dst_port,
+                                                                           iphone_msync_client_t * client)
+{
+        if (!device || src_port == 0 || dst_port == 0 || !client || *client)
+                return IPHONE_E_INVALID_ARG;
+
+        iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR;
+
+        iphone_msync_client_t client_loc = (iphone_msync_client_t) malloc(sizeof(struct iphone_msync_client_int));
+
+        // Attempt connection
+        client_loc->connection = NULL;
+        ret = iphone_mux_new_client(device, src_port, dst_port, &client_loc->connection);
+        if (IPHONE_E_SUCCESS != ret || !client_loc->connection) {
+                free(client_loc);
+                return ret;
+        }
+        //perform handshake
+        int bytes = 0;
+        char *content = NULL;
+        uint32_t length = 0;
+        plist_t array = NULL;
+
+        //first receive version
+        ret = iphone_msync_recv(client_loc, &content, &bytes);
+        log_debug_msg("Receive msg :\nsize : %i\nbuffer :\n", bytes);
+        log_debug_buffer(content, bytes);
+        plist_from_bin(content, bytes, &array);
+
+        free(content);
+        content = NULL;
+
+        plist_t msg_node =
+                plist_find_node(array, PLIST_STRING, "DLMessageVersionExchange", strlen("DLMessageVersionExchange"));
+        plist_t ver_1 = plist_get_next_sibling(msg_node);
+        plist_t ver_2 = plist_get_next_sibling(ver_1);
+
+        plist_type ver_1_type = plist_get_node_type(ver_1);
+        plist_type ver_2_type = plist_get_node_type(ver_2);
+
+        if (PLIST_UINT == ver_1_type && PLIST_UINT == ver_2_type) {
+
+                uint64_t ver_1_val = 0;
+                uint64_t ver_2_val = 0;
+
+                plist_get_uint_val(ver_1, &ver_1_val);
+                plist_get_uint_val(ver_2, &ver_2_val);
+
+                plist_free(array);
+                array = NULL;
+
+                if (ver_1_type == PLIST_UINT && ver_2_type == PLIST_UINT && ver_1_val == MSYNC_VERSION_INT1
+                        && ver_2_val == MSYNC_VERSION_INT2) {
+
+                        array = plist_new_array();
+                        plist_add_sub_string_el(array, "DLMessageVersionExchange");
+                        plist_add_sub_string_el(array, "DLVersionsOk");
+
+                        plist_to_bin(array, &content, &length);
+                        log_debug_msg("Send msg :\nsize : %i\nbuffer :\n", length);
+                        log_debug_buffer(content, length);
+                        ret = iphone_msync_send(client_loc, content, length, &bytes);
+
+                        free(content);
+                        content = NULL;
+                        plist_free(array);
+                        array = NULL;
+
+                        ret = iphone_msync_recv(client_loc, &content, &bytes);
+                        log_debug_msg("Receive msg :\nsize : %i\nbuffer :\n", bytes);
+                        log_debug_buffer(content, bytes);
+                        plist_from_bin(content, bytes, &array);
+
+                        free(content);
+                        content = NULL;
+
+                        plist_t rep_node =
+                                plist_find_node(array, PLIST_STRING, "DLMessageDeviceReady", strlen("DLMessageDeviceReady"));
+
+                        if (rep_node) {
+                                ret = IPHONE_E_SUCCESS;
+                                *client = client_loc;
+                        }
+                }
+        }
+
+        if (IPHONE_E_SUCCESS != ret)
+                iphone_msync_free_client(client_loc);
+
+        return ret;
+}
+
+static void iphone_msync_stop_session(iphone_msync_client_t client)
+{
+        if (!client)
+                return;
+
+        int bytes = 0;
+        char *content = NULL;
+        uint32_t length = 0;
+
+        plist_t array = plist_new_array();
+        plist_add_sub_string_el(array, "DLMessageDisconnect");
+        plist_add_sub_string_el(array, "All done, thanks for the memories");
+
+        plist_to_bin(array, &content, &length);
+        log_debug_msg("Send msg :\nsize : %i\nbuffer :\n", length);
+        log_debug_buffer(content, length);
+        iphone_msync_send(client, content, length, &bytes);
+
+        free(content);
+        content = NULL;
+        plist_free(array);
+        array = NULL;
+}
+
+void iphone_msync_free_client(iphone_msync_client_t client)
+{
+        iphone_msync_stop_session(client);
+
+        iphone_mux_free_client(client->connection);
+}
+
+/** Polls the iPhone for MobileSync data.
+ *
+ * @param client The MobileSync client
+ * @param dump_data The pointer to the location of the buffer in which to store
+ *                  the received data
+ * @param recv_byhtes The number of bytes received
+ *
+ * @return an error code
+ */
+iphone_error_t iphone_msync_recv(iphone_msync_client_t client, char **dump_data, uint32_t * recv_bytes)
+{
+        if (!client || !dump_data || !recv_bytes)
+                return IPHONE_E_INVALID_ARG;
+        iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR;
+        char *receive;
+        uint32_t datalen = 0, bytes = 0;
+
+        ret = iphone_mux_recv(client->connection, (char *) &datalen, sizeof(datalen), &bytes);
+        datalen = ntohl(datalen);
+
+        receive = (char *) malloc(sizeof(char) * datalen);
+        ret = iphone_mux_recv(client->connection, receive, datalen, &bytes);
+
+        *dump_data = receive;
+        *recv_bytes = bytes;
+        return ret;
+}
+
+/** Sends MobileSync data to the iPhone
+ * 
+ * @note This function is low-level and should only be used if you need to send
+ *        a new type of message.
+ *
+ * @param client The MobileSync client
+ * @param raw_data The null terminated string buffer to send
+ * @param length The length of data to send
+ * @param sent_bytes The number of bytes sent
+ *
+ * @return an error code
+ */
+iphone_error_t iphone_msync_send(iphone_msync_client_t client, char *raw_data, uint32_t length, uint32_t * sent_bytes)
+{
+        if (!client || !raw_data || length == 0 || !sent_bytes)
+                return IPHONE_E_INVALID_ARG;
+        char *real_query;
+        int bytes;
+        iphone_error_t ret = IPHONE_E_UNKNOWN_ERROR;
+
+        real_query = (char *) malloc(sizeof(char) * (length + 4));
+        length = htonl(length);
+        memcpy(real_query, &length, sizeof(length));
+        memcpy(real_query + 4, raw_data, ntohl(length));
+
+        ret = iphone_mux_send(client->connection, real_query, ntohl(length) + sizeof(length), &bytes);
+        free(real_query);
+        *sent_bytes = bytes;
+        return ret;
+}
+