diff options
Diffstat (limited to 'src/asr.c')
| -rw-r--r-- | src/asr.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/src/asr.c b/src/asr.c new file mode 100644 index 0000000..658f03f --- /dev/null +++ b/src/asr.c @@ -0,0 +1,275 @@ +/* + * dfu.h + * Functions for handling idevices in normal mode + * + * Copyright (c) 2010 Joshua Hill. 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <libimobiledevice/libimobiledevice.h> + +#include "asr.h" +#include "idevicerestore.h" + +#define ASR_PORT 12345 +#define ASR_BUFFER_SIZE 65536 + +int asr_open_with_timeout(idevice_t device, idevice_connection_t* asr) { + int i = 0; + int attempts = 10; + idevice_connection_t connection = NULL; + idevice_error_t device_error = IDEVICE_E_SUCCESS; + + *asr = NULL; + + if (device == NULL) { + return -1; + } + + debug("Connecting to ASR\n"); + for (i = 1; i <= attempts; i++) { + device_error = idevice_connect(device, ASR_PORT, &connection); + if (device_error == IDEVICE_E_SUCCESS) { + break; + } + + if (i >= attempts) { + error("ERROR: Unable to connect to ASR client\n"); + return -1; + } + + sleep(2); + debug("Retrying connection...\n"); + } + + *asr = connection; + return 0; +} + +int asr_receive(idevice_connection_t asr, plist_t* data) { + uint32_t size = 0; + char* buffer = NULL; + plist_t request = NULL; + idevice_error_t device_error = IDEVICE_E_SUCCESS; + + *data = NULL; + + buffer = (char*) malloc(ASR_BUFFER_SIZE); + if (buffer == NULL) { + error("ERROR: Unable to allocate memory for ASR receive buffer\n"); + return -1; + } + memset(buffer, '\0', ASR_BUFFER_SIZE); + + device_error = idevice_connection_receive(asr, buffer, ASR_BUFFER_SIZE, &size); + if (device_error != IDEVICE_E_SUCCESS) { + error("ERROR: Unable to receive data from ASR\n"); + free(buffer); + return -1; + } + plist_from_xml(buffer, size, &request); + + *data = request; + + debug("Received %d bytes:\n%s\n", size, buffer); + free(buffer); + return 0; +} + +int asr_send(idevice_connection_t asr, plist_t* data) { + uint32_t size = 0; + char* buffer = NULL; + + plist_to_xml(data, &buffer, &size); + if (asr_send_buffer(asr, buffer, size) < 0) { + error("ERROR: Unable to send plist to ASR\n"); + free(buffer); + return -1; + } + + free(buffer); + return 0; +} + +int asr_send_buffer(idevice_connection_t asr, const char* data, uint32_t size) { + uint32_t bytes = 0; + idevice_error_t device_error = IDEVICE_E_SUCCESS; + + device_error = idevice_connection_send(asr, data, size, &bytes); + if (device_error != IDEVICE_E_SUCCESS || bytes != size) { + error("ERROR: Unable to send data to ASR\n"); + return -1; + } + + debug("Sent %d bytes:\n%s", bytes, data); + return 0; +} + +void asr_close(idevice_connection_t asr) { + if (asr != NULL) { + idevice_disconnect(asr); + asr = NULL; + } +} + +int asr_perform_validation(idevice_connection_t asr, const char* filesystem) { + FILE* file = NULL; + uint64_t length = 0; + char* command = NULL; + plist_t node = NULL; + plist_t packet = NULL; + plist_t packet_info = NULL; + plist_t payload_info = NULL; + + file = fopen(filesystem, "rb"); + if (file == NULL) { + return -1; + } + + fseek(file, 0, SEEK_END); + length = ftell(file); + fseek(file, 0, SEEK_SET); + + payload_info = plist_new_dict(); + plist_dict_insert_item(payload_info, "Port", plist_new_uint(1)); + plist_dict_insert_item(payload_info, "Size", plist_new_uint(length)); + + packet_info = plist_new_dict(); + plist_dict_insert_item(packet_info, "FEC Slice Stride", plist_new_uint(40)); + plist_dict_insert_item(packet_info, "Packet Payload Size", plist_new_uint(1450)); + plist_dict_insert_item(packet_info, "Packets Per FEC", plist_new_uint(25)); + plist_dict_insert_item(packet_info, "Payload", payload_info); + plist_dict_insert_item(packet_info, "Stream ID", plist_new_uint(1)); + plist_dict_insert_item(packet_info, "Version", plist_new_uint(1)); + + if (asr_send(asr, packet_info)) { + error("ERROR: Unable to sent packet information to ASR\n"); + plist_free(packet_info); + return -1; + } + plist_free(packet_info); + + char* oob_data = NULL; + uint64_t oob_offset = 0; + uint64_t oob_length = 0; + plist_t oob_length_node = NULL; + plist_t oob_offset_node = NULL; + do { + if (asr_receive(asr, &packet) < 0) { + error("ERROR: Unable to receive validation packet\n"); + return -1; + } + + node = plist_dict_get_item(packet, "Command"); + if (!node || plist_get_node_type(node) != PLIST_STRING) { + error("ERROR: Unable to find command node in validation request\n"); + return -1; + } + plist_get_string_val(node, &command); + + if (!strcmp(command, "OOBData")) { + oob_length_node = plist_dict_get_item(packet, "OOB Length"); + if (!oob_length_node || PLIST_UINT != plist_get_node_type(oob_length_node)) { + error("ERROR: Unable to find OOB data length\n"); + return -1; + } + plist_get_uint_val(oob_length_node, &oob_length); + + oob_offset_node = plist_dict_get_item(packet, "OOB Offset"); + if (!oob_offset_node || PLIST_UINT != plist_get_node_type(oob_offset_node)) { + error("ERROR: Unable to find OOB data offset\n"); + return -1; + } + plist_get_uint_val(oob_offset_node, &oob_offset); + + oob_data = (char*) malloc(oob_length); + if (oob_data == NULL) { + error("ERROR: Out of memory\n"); + plist_free(packet); + return -1; + } + + fseek(file, oob_offset, SEEK_SET); + if (fread(oob_data, 1, oob_length, file) != oob_length) { + error("ERROR: Unable to read OOB data from filesystem offset\n"); + plist_free(packet); + free(oob_data); + return -1; + } + + if (asr_send_buffer(asr, oob_data, oob_length) < 0) { + error("ERROR: Unable to send OOB data to ASR\n"); + plist_free(packet); + free(oob_data); + return -1; + } + + plist_free(packet); + free(oob_data); + + } + + } while (strcmp(packet, "Payload")); +} + +int asr_send_payload(idevice_connection_t asr, const char* filesystem) { + int i = 0; + char data[1450]; + FILE* file = NULL; + uint32_t bytes = 0; + uint32_t count = 0; + uint32_t length = 0; + double progress = 0; + + file = fopen(filesystem, "rb"); + if (file == NULL) { + return -1; + } + + fseek(file, 0, SEEK_END); + length = ftell(file); + fseek(file, 0, SEEK_SET); + + for(i = length; i > 0; i -= 1450) { + int size = 1450; + if (i < 1450) { + size = i; + } + + if (fread(data, 1, size, file) != (unsigned int) size) { + error("Error reading filesystem\n"); + fclose(file); + return -1; + } + + if (asr_send_buffer(asr, data, size) < 0) { + error("ERROR: Unable to send filesystem payload\n"); + fclose(file); + return -1; + } + + bytes += size; + progress = ((double) bytes/ (double) length) * 100.0; + print_progress_bar("Extracting", progress); + + } + + fclose(file); + return 0; +} |