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 #include "cmdcrc.h"
  29 #include "cmdanalyse.h"
  30
  31 unsigned int current_command = CMD_UNKNOWN;
  32
  33 static int CmdHelp(const char *Cmd);
  34 static int CmdQuit(const char *Cmd);
  35 static int CmdRev(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 a particular command."},
  48         {"analyse", CmdAnalyse, 1, "{ Analyse bytes... }"},
  49         {"data",        CmdData,        1, "{ Plot window / data buffer manipulation... }"},
  50         {"hf",          CmdHF,          1, "{ High Frequency commands... }"},
  51         {"hw",          CmdHW,          1, "{ Hardware commands... }"},
  52         {"lf",          CmdLF,          1, "{ Low Frequency commands... }"},
  53         {"reveng",      CmdRev,         1, "Crc calculations from the software reveng 1.40"},
  54         {"script",      CmdScript,      1, "{ Scripting commands }"},
  55         {"quit",        CmdQuit,        1, "Exit program"},
  56         {"exit",        CmdQuit,        1, "Exit program"},
  57         {NULL, NULL, 0, NULL}
  58 };
  59
  60 command_t* getTopLevelCommandTable()
  61 {
  62   return CommandTable;
  63 }
  64 int CmdHelp(const char *Cmd)
  65 {
  66   CmdsHelp(CommandTable);
  67   return 0;
  68 }
  69
  70 int CmdQuit(const char *Cmd)
  71 {
  72   return 99;
  73 }
  74
  75 int CmdRev(const char *Cmd)
  76 {
  77   CmdCrc(Cmd);
  78   return 0;
  79 }
  80 /**
  81  * @brief This method should be called when sending a new command to the pm3. In case any old
  82  *  responses from previous commands are stored in the buffer, a call to this method should clear them.
  83  *  A better method could have been to have explicit command-ACKS, so we can know which ACK goes to which
  84  *  operation. Right now we'll just have to live with this.
  85  */
  86 void clearCommandBuffer()
  87 {
  88     //This is a very simple operation
  89     cmd_tail = cmd_head;
  90 }
  91
  92 /**
  93  * @brief storeCommand stores a USB command in a circular buffer
  94  * @param UC
  95  */
  96 void storeCommand(UsbCommand *command)
  97 {
  98     if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
  99     {
 100         //If these two are equal, we're about to overwrite in the
 101         // circular buffer.
 102         PrintAndLog("WARNING: Command buffer about to overwrite command! This needs to be fixed!");
 103     }
 104     //Store the command at the 'head' location
 105     UsbCommand* destination = &cmdBuffer[cmd_head];
 106     memcpy(destination, command, sizeof(UsbCommand));
 107
 108     cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
 109
 110 }
 111 /**
 112  * @brief getCommand gets a command from an internal circular buffer.
 113  * @param response location to write command
 114  * @return 1 if response was returned, 0 if nothing has been received
 115  */
 116 int getCommand(UsbCommand* response)
 117 {
 118     //If head == tail, there's nothing to read, or if we just got initialized
 119     if(cmd_head == cmd_tail)  return 0;
 120
 121     //Pick out the next unread command
 122     UsbCommand* last_unread = &cmdBuffer[cmd_tail];
 123     memcpy(response, last_unread, sizeof(UsbCommand));
 124
 125     //Increment tail - this is a circular buffer, so modulo buffer size
 126     cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
 127
 128     return 1;
 129 }
 130
 131 /**
 132  * Waits for a certain response type. This method waits for a maximum of
 133  * ms_timeout milliseconds for a specified response command.
 134  *@brief WaitForResponseTimeout
 135  * @param cmd command to wait for
 136  * @param response struct to copy received command into.
 137  * @param ms_timeout
 138  * @return true if command was returned, otherwise false
 139  */
 140 bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
 141
 142         UsbCommand resp;
 143
 144         if (response == NULL)
 145                 response = &resp;
 146
 147         // Wait until the command is received
 148         for ( size_t dm_seconds = 0; dm_seconds < ms_timeout/10; dm_seconds++ ) {
 149
 150                 while( getCommand(response) ) {
 151                         if(response->cmd == cmd)
 152                                 return true;
 153                 }
 154
 155                 msleep(10); // XXX ugh
 156                 if (dm_seconds == 250) { // 2.5 seconds elapsed
 157                         PrintAndLog("Waiting for a response from the proxmark...");
 158                         PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
 159                 }
 160         }
 161         return false;
 162 }
 163
 164 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
 165         return WaitForResponseTimeout(cmd, response, -1);
 166 }
 167
 168 //-----------------------------------------------------------------------------
 169 // Entry point into our code: called whenever the user types a command and
 170 // then presses Enter, which the full command line that they typed.
 171 //-----------------------------------------------------------------------------
 172 int CommandReceived(char *Cmd) {
 173         return CmdsParse(CommandTable, Cmd);
 174 }
 175
 176 //-----------------------------------------------------------------------------
 177 // Entry point into our code: called whenever we received a packet over USB
 178 // that we weren't necessarily expecting, for example a debug print.
 179 //-----------------------------------------------------------------------------
 180 void UsbCommandReceived(UsbCommand *UC)
 181 {
 182         switch(UC->cmd) {
 183                 // First check if we are handling a debug message
 184                 case CMD_DEBUG_PRINT_STRING: {
 185                         char s[USB_CMD_DATA_SIZE+1];
 186                         memset(s, 0x00, sizeof(s));
 187                         size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
 188                         memcpy(s, UC->d.asBytes, len);
 189
 190                         // test
 191                         if ( UC->arg[1] == CMD_MEASURE_ANTENNA_TUNING_HF) {
 192                                 printf("\r#db# %s", s);
 193                                 fflush(stdout);
 194                         }
 195                         else
 196                                 PrintAndLog("#db# %s", s);
 197
 198                         return;
 199                 } break;
 200
 201                 case CMD_DEBUG_PRINT_INTEGERS: {
 202                         PrintAndLog("#db# %08x, %08x, %08x", UC->arg[0], UC->arg[1], UC->arg[2]);
 203                         break;
 204                 }
 205                 case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K:
 206                 case CMD_DOWNLOADED_EML_BIGBUF: {
 207                         memcpy( sample_buf + (UC->arg[0]), UC->d.asBytes, UC->arg[1]);
 208                         break;
 209                 }
 210                 default: {
 211                         storeCommand(UC);
 212                         break;
 213                 }
 214         }
 215
 216 }
 217