git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdmain.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Main command parser entry point
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <unistd.h>
  14 #include <string.h>
  15 #include "sleep.h"
  16 #include "cmdparser.h"
  17 #include "proxmark3.h"
  18 #include "data.h"
  19 #include "usb_cmd.h"
  20 #include "ui.h"
  21 #include "cmdhf.h"
  22 #include "cmddata.h"
  23 #include "cmdhw.h"
  24 #include "cmdlf.h"
  25 #include "cmdmain.h"
  26 #include "util.h"
  27
  28
  29 unsigned int current_command = CMD_UNKNOWN;
  30 //unsigned int received_command = CMD_UNKNOWN;
  31 //UsbCommand current_response;
  32 //UsbCommand current_response_user;
  33
  34 static int CmdHelp(const char *Cmd);
  35 static int CmdQuit(const char *Cmd);
  36
  37 //For storing command that are received from the device
  38 #define CMD_BUFFER_SIZE 50
  39 static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
  40 //Points to the next empty position to write to
  41 static int cmd_head;//Starts as 0
  42 //Points to the position of the last unread command
  43 static int cmd_tail;//Starts as 0
  44
  45 static command_t CommandTable[] =
  46 {
  47   {"help",  CmdHelp,  1, "This help. Use '<command> help' for details of the following commands:\n"},
  48   {"data",  CmdData,  1, "{ Plot window / data buffer manipulation... }"},
  49   {"exit",  CmdQuit,  1, "Exit program"},
  50   {"hf",    CmdHF,    1, "{ HF commands... }"},
  51   {"hw",    CmdHW,    1, "{ Hardware commands... }"},
  52   {"lf",    CmdLF,    1, "{ LF commands... }"},
  53   {"quit",  CmdQuit,  1, "Quit program"},
  54   {NULL, NULL, 0, NULL}
  55 };
  56
  57 int CmdHelp(const char *Cmd)
  58 {
  59   CmdsHelp(CommandTable);
  60   return 0;
  61 }
  62
  63 int CmdQuit(const char *Cmd)
  64 {
  65   exit(0);
  66   return 0;
  67 }
  68 int getCommand(UsbCommand* response);
  69 void storeCommand(UsbCommand *command);
  70 /**
  71  * Waits for a certain response type. This method waits for a maximum of
  72  * ms_timeout milliseconds for a specified response command.
  73  *@brief WaitForResponseTimeout
  74  * @param cmd command to wait for
  75  * @param response struct to copy received command into.
  76  * @param ms_timeout
  77  * @return true if command was returned, otherwise false
  78  */
  79 bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
  80
  81   if (response == NULL) {
  82     UsbCommand resp;
  83     response = &resp;
  84   }
  85
  86   // Wait until the command is received
  87   for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
  88
  89       while(getCommand(response))
  90       {
  91           if(response->cmd == cmd){
  92           //We got what we expected
  93           return true;
  94           }
  95
  96       }
  97         msleep(10); // XXX ugh
  98         if (dm_seconds == 200) { // Two seconds elapsed
  99           PrintAndLog("Waiting for a response from the proxmark...");
 100           PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
 101         }
 102         }
 103     return false;
 104 }
 105
 106 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
 107         return WaitForResponseTimeout(cmd,response,-1);
 108 }
 109
 110 //-----------------------------------------------------------------------------
 111 // Entry point into our code: called whenever the user types a command and
 112 // then presses Enter, which the full command line that they typed.
 113 //-----------------------------------------------------------------------------
 114 void CommandReceived(char *Cmd) {
 115   CmdsParse(CommandTable, Cmd);
 116 }
 117
 118 //-----------------------------------------------------------------------------
 119 // Entry point into our code: called whenever we received a packet over USB
 120 // that we weren't necessarily expecting, for example a debug print.
 121 //-----------------------------------------------------------------------------
 122 void UsbCommandReceived(UsbCommand *UC)
 123 {
 124   /*
 125   //  Debug
 126   printf("UsbCommand length[len=%zd]\n",sizeof(UsbCommand));
 127   printf("  cmd[len=%zd]: %"llx"\n",sizeof(UC->cmd),UC->cmd);
 128   printf(" arg0[len=%zd]: %"llx"\n",sizeof(UC->arg[0]),UC->arg[0]);
 129   printf(" arg1[len=%zd]: %"llx"\n",sizeof(UC->arg[1]),UC->arg[1]);
 130   printf(" arg2[len=%zd]: %"llx"\n",sizeof(UC->arg[2]),UC->arg[2]);
 131   printf(" data[len=%zd]: %02x%02x%02x...\n",sizeof(UC->d.asBytes),UC->d.asBytes[0],UC->d.asBytes[1],UC->d.asBytes[2]);
 132   */
 133
 134   //    printf("%s(%x) current cmd = %x\n", __FUNCTION__, c->cmd, current_command);
 135   // If we recognize a response, return to avoid further processing
 136   switch(UC->cmd) {
 137       // First check if we are handling a debug message
 138     case CMD_DEBUG_PRINT_STRING: {
 139       char s[USB_CMD_DATA_SIZE+1];
 140       size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
 141       memcpy(s,UC->d.asBytes,len);
 142       s[len] = 0x00;
 143       PrintAndLog("#db# %s       ", s);
 144       return;
 145     } break;
 146
 147     case CMD_DEBUG_PRINT_INTEGERS: {
 148       PrintAndLog("#db# %08x, %08x, %08x       \r\n", UC->arg[0], UC->arg[1], UC->arg[2]);
 149       return;
 150     } break;
 151
 152     case CMD_MEASURED_ANTENNA_TUNING: {
 153       int peakv, peakf;
 154       int vLf125, vLf134, vHf;
 155       vLf125 = UC->arg[0] & 0xffff;
 156       vLf134 = UC->arg[0] >> 16;
 157       vHf = UC->arg[1] & 0xffff;;
 158       peakf = UC->arg[2] & 0xffff;
 159       peakv = UC->arg[2] >> 16;
 160       PrintAndLog("");
 161       PrintAndLog("# LF antenna: %5.2f V @   125.00 kHz", vLf125/1000.0);
 162       PrintAndLog("# LF antenna: %5.2f V @   134.00 kHz", vLf134/1000.0);
 163       PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
 164       PrintAndLog("# HF antenna: %5.2f V @    13.56 MHz", vHf/1000.0);
 165       if (peakv<2000)
 166         PrintAndLog("# Your LF antenna is unusable.");
 167       else if (peakv<10000)
 168         PrintAndLog("# Your LF antenna is marginal.");
 169       if (vHf<2000)
 170         PrintAndLog("# Your HF antenna is unusable.");
 171       else if (vHf<5000)
 172         PrintAndLog("# Your HF antenna is marginal.");
 173     } break;
 174
 175     case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: {
 176 //      printf("received samples: ");
 177 //      print_hex(UC->d.asBytes,512);
 178       sample_buf_len += UC->arg[1];
 179 //      printf("samples: %zd offset: %d\n",sample_buf_len,UC->arg[0]);
 180       memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]);
 181     } break;
 182
 183
 184 //    case CMD_ACK: {
 185 //      PrintAndLog("Receive ACK\n");
 186 //    } break;
 187
 188     default: {
 189       // Maybe it's a response
 190       /*
 191       switch(current_command) {
 192         case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
 193           if (UC->cmd != CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) {
 194             PrintAndLog("unrecognized command %08x\n", UC->cmd);
 195             break;
 196           }
 197 //          int i;
 198           PrintAndLog("received samples %d\n",UC->arg[0]);
 199           memcpy(sample_buf+UC->arg[0],UC->d.asBytes,48);
 200           sample_buf_len += 48;
 201 //          for(i=0; i<48; i++) sample_buf[i] = UC->d.asBytes[i];
 202           //received_command = UC->cmd;
 203         } break;
 204
 205         default: {
 206         } break;
 207       }*/
 208     }
 209       break;
 210   }
 211
 212   storeCommand(UC);
 213
 214 }
 215
 216 /**
 217  * @brief This method should be called when sending a new command to the pm3. In case any old
 218  *  responses from previous commands are stored in the buffer, a call to this method should clear them.
 219  *  A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
 220  *  operation. Right now we'll just have to live with this.
 221  */
 222 void clearCommandBuffer()
 223 {
 224     //This is a very simple operation
 225     cmd_tail = cmd_head;
 226 }
 227
 228 /**
 229  * @brief storeCommand stores a USB command in a circular buffer
 230  * @param UC
 231  */
 232 void storeCommand(UsbCommand *command)
 233 {
 234     if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
 235     {
 236         //If these two are equal, we're about to overwrite in the
 237         // circular buffer.
 238         PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
 239     }
 240     //Store the command at the 'head' location
 241     UsbCommand* destination = &cmdBuffer[cmd_head];
 242     memcpy(destination, command, sizeof(UsbCommand));
 243
 244     cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
 245
 246 }
 247 /**
 248  * @brief getCommand gets a command from an internal circular buffer.
 249  * @param response location to write command
 250  * @return 1 if response was returned, 0 if nothing has been received
 251  */
 252 int getCommand(UsbCommand* response)
 253 {
 254     //If head == tail, there's nothing to read, or if we just got initialized
 255     if(cmd_head == cmd_tail){
 256         return 0;
 257     }
 258     //Pick out the next unread command
 259     UsbCommand* last_unread = &cmdBuffer[cmd_tail];
 260     memcpy(response, last_unread, sizeof(UsbCommand));
 261     //Increment tail - this is a circular buffer, so modulo buffer size
 262     cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
 263
 264     return 1;
 265
 266 }