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 #include "cmdscript.h"
  28
  29
  30 unsigned int current_command = CMD_UNKNOWN;
  31 //unsigned int received_command = CMD_UNKNOWN;
  32 //UsbCommand current_response;
  33 //UsbCommand current_response_user;
  34
  35 static int CmdHelp(const char *Cmd);
  36 static int CmdQuit(const char *Cmd);
  37
  38 //For storing command that are received from the device
  39 #define CMD_BUFFER_SIZE 50
  40 static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
  41 //Points to the next empty position to write to
  42 static int cmd_head;//Starts as 0
  43 //Points to the position of the last unread command
  44 static int cmd_tail;//Starts as 0
  45
  46 static command_t CommandTable[] =
  47 {
  48   {"help",  CmdHelp,  1, "This help. Use '<command> help' for details of a particular command."},
  49   {"data",  CmdData,  1, "{ Plot window / data buffer manipulation... }"},
  50   {"hf",    CmdHF,    1, "{ HF commands... }"},
  51   {"hw",    CmdHW,    1, "{ Hardware commands... }"},
  52   {"lf",    CmdLF,    1, "{ LF commands... }"},
  53   {"script", CmdScript,   1,"{ Scripting commands }"},
  54   {"quit",  CmdQuit,  1, "Exit program"},
  55   {"exit",  CmdQuit,  1, "Exit program"},
  56   {NULL, NULL, 0, NULL}
  57 };
  58
  59 command_t* getTopLevelCommandTable()
  60 {
  61   return CommandTable;
  62 }
  63 int CmdHelp(const char *Cmd)
  64 {
  65   CmdsHelp(CommandTable);
  66   return 0;
  67 }
  68
  69 int CmdQuit(const char *Cmd)
  70 {
  71   exit(0);
  72   return 0;
  73 }
  74 /**
  75  * @brief This method should be called when sending a new command to the pm3. In case any old
  76  *  responses from previous commands are stored in the buffer, a call to this method should clear them.
  77  *  A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
  78  *  operation. Right now we'll just have to live with this.
  79  */
  80 void clearCommandBuffer()
  81 {
  82     //This is a very simple operation
  83     cmd_tail = cmd_head;
  84 }
  85
  86 /**
  87  * @brief storeCommand stores a USB command in a circular buffer
  88  * @param UC
  89  */
  90 void storeCommand(UsbCommand *command)
  91 {
  92     if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
  93     {
  94         //If these two are equal, we're about to overwrite in the
  95         // circular buffer.
  96         PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
  97     }
  98     //Store the command at the 'head' location
  99     UsbCommand* destination = &cmdBuffer[cmd_head];
 100     memcpy(destination, command, sizeof(UsbCommand));
 101
 102     cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
 103
 104 }
 105 /**
 106  * @brief getCommand gets a command from an internal circular buffer.
 107  * @param response location to write command
 108  * @return 1 if response was returned, 0 if nothing has been received
 109  */
 110 int getCommand(UsbCommand* response)
 111 {
 112     //If head == tail, there's nothing to read, or if we just got initialized
 113     if(cmd_head == cmd_tail){
 114         return 0;
 115     }
 116     //Pick out the next unread command
 117     UsbCommand* last_unread = &cmdBuffer[cmd_tail];
 118     memcpy(response, last_unread, sizeof(UsbCommand));
 119     //Increment tail - this is a circular buffer, so modulo buffer size
 120     cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
 121
 122     return 1;
 123
 124 }
 125
 126 /**
 127  * Waits for a certain response type. This method waits for a maximum of
 128  * ms_timeout milliseconds for a specified response command.
 129  *@brief WaitForResponseTimeout
 130  * @param cmd command to wait for
 131  * @param response struct to copy received command into.
 132  * @param ms_timeout
 133  * @return true if command was returned, otherwise false
 134  */
 135 bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
 136
 137   UsbCommand resp;
 138
 139   if (response == NULL) {
 140     response = &resp;
 141   }
 142
 143   // Wait until the command is received
 144   for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
 145
 146       while(getCommand(response))
 147       {
 148           if(response->cmd == cmd){
 149           //We got what we expected
 150           return true;
 151           }
 152
 153       }
 154         msleep(10); // XXX ugh
 155         if (dm_seconds == 200) { // Two seconds elapsed
 156           PrintAndLog("Waiting for a response from the proxmark...");
 157           PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
 158         }
 159         }
 160     return false;
 161 }
 162
 163 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
 164         return WaitForResponseTimeout(cmd,response,-1);
 165 }
 166
 167 //-----------------------------------------------------------------------------
 168 // Entry point into our code: called whenever the user types a command and
 169 // then presses Enter, which the full command line that they typed.
 170 //-----------------------------------------------------------------------------
 171 void CommandReceived(char *Cmd) {
 172   CmdsParse(CommandTable, Cmd);
 173 }
 174
 175 //-----------------------------------------------------------------------------
 176 // Entry point into our code: called whenever we received a packet over USB
 177 // that we weren't necessarily expecting, for example a debug print.
 178 //-----------------------------------------------------------------------------
 179 void UsbCommandReceived(UsbCommand *UC)
 180 {
 181   /*
 182   //  Debug
 183   printf("UsbCommand length[len=%zd]\n",sizeof(UsbCommand));
 184   printf("  cmd[len=%zd]: %"llx"\n",sizeof(UC->cmd),UC->cmd);
 185   printf(" arg0[len=%zd]: %"llx"\n",sizeof(UC->arg[0]),UC->arg[0]);
 186   printf(" arg1[len=%zd]: %"llx"\n",sizeof(UC->arg[1]),UC->arg[1]);
 187   printf(" arg2[len=%zd]: %"llx"\n",sizeof(UC->arg[2]),UC->arg[2]);
 188   printf(" data[len=%zd]: %02x%02x%02x...\n",sizeof(UC->d.asBytes),UC->d.asBytes[0],UC->d.asBytes[1],UC->d.asBytes[2]);
 189   */
 190
 191   //    printf("%s(%x) current cmd = %x\n", __FUNCTION__, c->cmd, current_command);
 192   // If we recognize a response, return to avoid further processing
 193   switch(UC->cmd) {
 194       // First check if we are handling a debug message
 195     case CMD_DEBUG_PRINT_STRING: {
 196       char s[USB_CMD_DATA_SIZE+1];
 197       size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
 198       memcpy(s,UC->d.asBytes,len);
 199       s[len] = 0x00;
 200       PrintAndLog("#db# %s       ", s);
 201       return;
 202     } break;
 203
 204     case CMD_DEBUG_PRINT_INTEGERS: {
 205       PrintAndLog("#db# %08x, %08x, %08x       \r\n", UC->arg[0], UC->arg[1], UC->arg[2]);
 206       return;
 207     } break;
 208
 209     // case CMD_MEASURED_ANTENNA_TUNING: {
 210       // int peakv, peakf;
 211       // int vLf125, vLf134, vHf;
 212       // vLf125 = UC->arg[0] & 0xffff;
 213       // vLf134 = UC->arg[0] >> 16;
 214       // vHf = UC->arg[1] & 0xffff;;
 215       // peakf = UC->arg[2] & 0xffff;
 216       // peakv = UC->arg[2] >> 16;
 217       // PrintAndLog("");
 218       // PrintAndLog("# LF antenna: %5.2f V @   125.00 kHz", vLf125/1000.0);
 219       // PrintAndLog("# LF antenna: %5.2f V @   134.00 kHz", vLf134/1000.0);
 220       // PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
 221       // PrintAndLog("# HF antenna: %5.2f V @    13.56 MHz", vHf/1000.0);
 222       // if (peakv<2000)
 223         // PrintAndLog("# Your LF antenna is unusable.");
 224       // else if (peakv<10000)
 225         // PrintAndLog("# Your LF antenna is marginal.");
 226       // if (vHf<2000)
 227         // PrintAndLog("# Your HF antenna is unusable.");
 228       // else if (vHf<5000)
 229         // PrintAndLog("# Your HF antenna is marginal.");
 230     // } break;
 231
 232     case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: {
 233 //      printf("received samples: ");
 234 //      print_hex(UC->d.asBytes,512);
 235       sample_buf_len += UC->arg[1];
 236 //      printf("samples: %zd offset: %d\n",sample_buf_len,UC->arg[0]);
 237       memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]);
 238     } break;
 239
 240
 241 //    case CMD_ACK: {
 242 //      PrintAndLog("Receive ACK\n");
 243 //    } break;
 244
 245     default: {
 246       // Maybe it's a response
 247       /*
 248       switch(current_command) {
 249         case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: {
 250           if (UC->cmd != CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K) {
 251             PrintAndLog("unrecognized command %08x\n", UC->cmd);
 252             break;
 253           }
 254 //          int i;
 255           PrintAndLog("received samples %d\n",UC->arg[0]);
 256           memcpy(sample_buf+UC->arg[0],UC->d.asBytes,48);
 257           sample_buf_len += 48;
 258 //          for(i=0; i<48; i++) sample_buf[i] = UC->d.asBytes[i];
 259           //received_command = UC->cmd;
 260         } break;
 261
 262         default: {
 263         } break;
 264       }*/
 265     }
 266       break;
 267   }
 268
 269   storeCommand(UC);
 270
 271 }
 272