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/*
* iphone.c
* Functions for creating and initializing iPhone structures.
*
* Copyright (c) 2008 Zach C. 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 "usbmux.h"
#include "iphone.h"
#include <arpa/inet.h>
#include <usb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
extern int debug;
/** Gets a handle to an iPhone
*
* @return A structure with data on the first iPhone it finds. (Or NULL, on
* error)
*/
iPhone *get_iPhone() {
iPhone *phone = (iPhone*)malloc(sizeof(iPhone));
struct usb_bus *bus, *busses;
struct usb_device *dev;
// Initialize the struct
phone->device = NULL;
phone->__device = NULL;
phone->buffer = NULL;
// Initialize libusb
usb_init();
usb_find_busses();
usb_find_devices();
busses = usb_get_busses();
// Set the device configuration
for (bus = busses; bus; bus = bus->next) {
for (dev = bus->devices; dev; dev = dev->next) {
if (dev->descriptor.idVendor == 0x05ac &&
(dev->descriptor.idProduct == 0x1290 ||
dev->descriptor.idProduct == 0x1291 ||
dev->descriptor.idProduct == 0x1292
)
) {
phone->__device = dev;
phone->device = usb_open(phone->__device);
usb_set_configuration(phone->device, 3);
usb_claim_interface(phone->device, 1);
break;
}
}
if (phone->__device && phone->device) break;
}
// Check to see if we are connected
if (!phone->device || !phone->__device) {
free_iPhone(phone);
if (debug) fprintf(stderr, "get_iPhone(): iPhone not found\n");
return NULL;
}
// Send the version command to the phone
int bytes = 0;
usbmux_version_header *version = version_header();
bytes = usb_bulk_write(phone->device, BULKOUT, (char*)version, sizeof(*version), 800);
if (bytes < 20 && debug) {
fprintf(stderr, "get_iPhone(): libusb did NOT send enough!\n");
if (bytes < 0) {
fprintf(stderr, "get_iPhone(): libusb gave me the error %d: %s (%s)\n",
bytes, usb_strerror(), strerror(-bytes));
}
}
// Read the phone's response
bytes = usb_bulk_read(phone->device, BULKIN, (char*)version, sizeof(*version), 800);
// Check for bad response
if (bytes < 20) {
free(version);
free_iPhone(phone);
free(version);
if (debug) fprintf(stderr, "get_iPhone(): Invalid version message -- header too short.\n");
if (debug && bytes < 0) fprintf(stderr, "get_iPhone(): libusb error message %d: %s (%s)\n",
bytes, usb_strerror(), strerror(-bytes));
return NULL;
}
// Check for correct version
if (ntohl(version->major) == 1 && ntohl(version->minor) == 0) {
// We're all ready to roll.
fprintf(stderr, "get_iPhone() success\n");
free(version);
return phone;
} else {
// Bad header
free_iPhone(phone);
free(version);
if (debug) fprintf(stderr, "get_iPhone(): Received a bad header/invalid version number.");
return NULL;
}
// If it got to this point it's gotta be bad
if (debug) fprintf(stderr, "get_iPhone(): Unknown error.\n");
free_iPhone(phone);
free(version);
return NULL;
}
/** Cleans up an iPhone structure, then frees the structure itself.
* This is a library-level function; deals directly with the iPhone to tear
* down relations, but otherwise is mostly internal.
*
* @param phone A pointer to an iPhone structure.
*/
void free_iPhone(iPhone *phone) {
if (phone->buffer) free(phone->buffer);
if (phone->device) {
usb_release_interface(phone->device, 1);
usb_reset(phone->device);
usb_close(phone->device);
}
free(phone);
}
/** Sends data to the phone
* This is a low-level (i.e. directly to phone) function.
*
* @param phone The iPhone to send data to
* @param data The data to send to the iPhone
* @param datalen The length of the data
* @return The number of bytes sent, or -1 on error or something.
*/
int send_to_phone(iPhone *phone, char *data, int datalen) {
int bytes = 0;
if (!phone) return -1;
if (debug) fprintf(stderr, "send_to_phone: Attempting to send datalen = %i data = %p\n", datalen, data);
bytes = usb_bulk_write(phone->device, BULKOUT, data, datalen, 800);
if (bytes < datalen) {
if(debug && bytes < 0)
fprintf(stderr, "send_to_iphone(): libusb gave me the error %d: %s - %s\n", bytes, usb_strerror(), strerror(-bytes));
return -1;
} else {
return bytes;
}
return -1;
}
/** This function is a low-level (i.e. direct to iPhone) function.
*
* @param phone The iPhone to receive data from
* @param data Where to put data read
* @param datalen How much data to read in
*
* @return How many bytes were read in, or -1 on error.
*/
int recv_from_phone(iPhone *phone, char *data, int datalen) {
int bytes = 0;
if (!phone) return -1;
if (debug) fprintf(stderr, "recv_from_phone(): attempting to receive %i bytes\n", datalen);
bytes = usb_bulk_read(phone->device, BULKIN, data, datalen, 3500);
if (bytes < 0) {
if(debug) fprintf(stderr, "recv_from_phone(): libusb gave me the error %d: %s (%s)\n", bytes, usb_strerror(), strerror(-bytes));
return -1;
}
return bytes;
}
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