git.zerfleddert.de Git - proxmark3-svn/blob - client/hid-flasher/proxusb.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2009 Michael Gernoth <michael at gernoth.net>
   3 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   4 //
   5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   6 // at your option, any later version. See the LICENSE.txt file for the text of
   7 // the license.
   8 //-----------------------------------------------------------------------------
   9 // USB utilities
  10 //-----------------------------------------------------------------------------
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <stdbool.h>
  16 #include <unistd.h>
  17 #include <usb.h>
  18 #include <strings.h>
  19 #include <errno.h>
  20
  21 #include "proxusb.h"
  22 #include "proxmark3.h"
  23 #include "usb_cmd.h"
  24
  25 // It seems to be missing for mingw
  26 #ifndef ETIMEDOUT
  27 #define ETIMEDOUT 116
  28 #endif
  29
  30 usb_dev_handle *devh = NULL;
  31 static unsigned int claimed_iface = 0;
  32 unsigned char return_on_error = 0;
  33 unsigned char error_occured = 0;
  34 extern unsigned int current_command;
  35
  36 void SendCommand(UsbCommand *c)
  37 {
  38   int ret;
  39
  40 #if 0
  41   printf("Sending %d bytes\n", sizeof(UsbCommand));
  42 #endif
  43   current_command = c->cmd;
  44   ret = usb_bulk_write(devh, 0x01, (char*)c, sizeof(UsbCommand), 1000);
  45   if (ret<0) {
  46     error_occured = 1;
  47     if (return_on_error)
  48       return;
  49
  50     fprintf(stderr, "write failed: %s!\nTrying to reopen device...\n",
  51       usb_strerror());
  52
  53     if (devh) {
  54       usb_close(devh);
  55       devh = NULL;
  56     }
  57     while(!OpenProxmark(0)) { sleep(1); }
  58     printf(PROXPROMPT);
  59     fflush(NULL);
  60
  61     return;
  62   }
  63 }
  64
  65 bool ReceiveCommandPoll(UsbCommand *c)
  66 {
  67   int ret;
  68
  69   memset(c, 0, sizeof (UsbCommand));
  70   ret = usb_bulk_read(devh, 0x82, (char*)c, sizeof(UsbCommand), 500);
  71   if (ret<0) {
  72     if (ret != -ETIMEDOUT) {
  73       error_occured = 1;
  74       if (return_on_error)
  75         return false;
  76
  77       fprintf(stderr, "read failed: %s(%d)!\nTrying to reopen device...\n",
  78         usb_strerror(), ret);
  79
  80       if (devh) {
  81         usb_close(devh);
  82         devh = NULL;
  83       }
  84       while(!OpenProxmark(0)) { sleep(1); }
  85       printf(PROXPROMPT);
  86       fflush(NULL);
  87
  88       return false;
  89     }
  90   } else {
  91     if (ret && (ret < sizeof(UsbCommand))) {
  92       fprintf(stderr, "Read only %d instead of requested %d bytes!\n",
  93         ret, (int)sizeof(UsbCommand));
  94     }
  95   }
  96
  97   return ret > 0;
  98 }
  99
 100 void ReceiveCommand(UsbCommand *c)
 101 {
 102 //  printf("%s()\n", __FUNCTION__);
 103   int retval = 0;
 104   do {
 105     retval = ReceiveCommandPoll(c);
 106     if (retval != 1) printf("ReceiveCommandPoll returned %d\n", retval);
 107   } while(retval<0);
 108 //  printf("recv %x\n", c->cmd);
 109 }
 110
 111 usb_dev_handle* findProxmark(int verbose, unsigned int *iface)
 112 {
 113   struct usb_bus *busses, *bus;
 114   usb_dev_handle *handle = NULL;
 115   struct prox_unit units[50];
 116   int iUnit = 0;
 117
 118   usb_find_busses();
 119   usb_find_devices();
 120
 121   busses = usb_get_busses();
 122
 123   for (bus = busses; bus; bus = bus->next) {
 124     struct usb_device *dev;
 125
 126     for (dev = bus->devices; dev; dev = dev->next) {
 127       struct usb_device_descriptor *desc = &(dev->descriptor);
 128
 129       if ((desc->idProduct == 0x4b8f) && (desc->idVendor == 0x9ac4)) {
 130         handle = usb_open(dev);
 131         if (!handle) {
 132           if (verbose)
 133             fprintf(stderr, "open fabiled: %s!\n", usb_strerror());
 134           //return NULL;
 135           continue;
 136         }
 137         *iface = dev->config[0].interface[0].altsetting[0].bInterfaceNumber;
 138
 139         struct prox_unit unit = {handle, {0}};
 140         usb_get_string_simple(handle, desc->iSerialNumber, unit.serial_number, sizeof(unit.serial_number));
 141         units[iUnit++] = unit;
 142
 143         //return handle;
 144       }
 145     }
 146   }
 147
 148   if (iUnit > 0) {
 149     int iSelection = 0;
 150
 151     fprintf(stdout, "\nConnected units:\n");
 152
 153     for (int i = 0; i < iUnit; i++) {
 154       struct usb_device * dev = usb_device(units[i].handle);
 155       fprintf(stdout, "\t%d. SN: %s [%s/%s]\n", i+1, units[i].serial_number, dev->bus->dirname, dev->filename);
 156     }
 157     if (iUnit > 1) {
 158       while (iSelection < 1 || iSelection > iUnit) {
 159         fprintf(stdout, "Which unit do you want to connect to? ");
 160         fscanf(stdin, "%d", &iSelection);
 161         }
 162       }
 163     else
 164       iSelection = 1;
 165     iSelection --;
 166
 167     for (int i = 0; i < iUnit; i++) {
 168       if (iSelection == i) continue;
 169       usb_close(units[i].handle);
 170       units[i].handle = NULL;
 171     }
 172
 173     return units[iSelection].handle;
 174   }
 175
 176   return NULL;
 177 }
 178
 179 usb_dev_handle* OpenProxmark(int verbose)
 180 {
 181   int ret;
 182   usb_dev_handle *handle = NULL;
 183   unsigned int iface;
 184
 185   handle = findProxmark(verbose, &iface);
 186   if (!handle)
 187     return NULL;
 188
 189 #ifdef __linux__
 190   /* detach kernel driver first */
 191   ret = usb_detach_kernel_driver_np(handle, iface);
 192   /* don't complain if no driver attached */
 193   if (ret<0 && ret != -61 && verbose)
 194     fprintf(stderr, "detach kernel driver failed: (%d) %s!\n", ret, usb_strerror());
 195 #endif
 196
 197   // Needed for Windows. Optional for Mac OS and Linux
 198   ret = usb_set_configuration(handle, 1);
 199   if (ret < 0) {
 200     if (verbose)
 201       fprintf(stderr, "configuration set failed: %s!\n", usb_strerror());
 202     return NULL;
 203   }
 204
 205   ret = usb_claim_interface(handle, iface);
 206   if (ret < 0) {
 207     if (verbose)
 208       fprintf(stderr, "claim failed: %s!\n", usb_strerror());
 209     return NULL;
 210   }
 211   claimed_iface = iface;
 212   devh = handle;
 213   return handle;
 214 }
 215
 216 void CloseProxmark(void)
 217 {
 218   usb_release_interface(devh, claimed_iface);
 219   usb_close(devh);
 220   devh = NULL;
 221 }