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[proxmark3-svn] / client / cmdmain.c

diff --git a/client/cmdmain.c b/client/cmdmain.c
index d994f2e5d8aeb6e1ae0e6f2ec98cb71716778ad6..739d68e1cbc0beb609f0d858dae78a3ad1438b95 100644 (file)
--- a/client/cmdmain.c
+++ b/client/cmdmain.c
@@ -8,11 +8,13 @@
 // Main command parser entry point
 //-----------------------------------------------------------------------------
 
+#include "cmdmain.h"
+
+#include <pthread.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <string.h>
-#include "sleep.h"
 #include "cmdparser.h"
 #include "proxmark3.h"
 #include "data.h"
@@ -22,8 +24,8 @@
 #include "cmddata.h"
 #include "cmdhw.h"
 #include "cmdlf.h"
-#include "cmdmain.h"
 #include "util.h"
+#include "util_posix.h"
 #include "cmdscript.h"
 #include "cmdcrc.h"
 
@@ -41,6 +43,8 @@ static UsbCommand cmdBuffer[CMD_BUFFER_SIZE];
 static int cmd_head;//Starts as 0
 //Points to the position of the last unread command
 static int cmd_tail;//Starts as 0
+// to lock cmdBuffer operations from different threads
+static pthread_mutex_t cmdBufferMutex = PTHREAD_MUTEX_INITIALIZER;
 
 static command_t CommandTable[] = 
 {
@@ -68,8 +72,7 @@ int CmdHelp(const char *Cmd)
 
 int CmdQuit(const char *Cmd)
 {
-  exit(0);
-  return 0;
+  return 99;
 }
 
 int CmdRev(const char *Cmd)
@@ -87,7 +90,9 @@ int CmdRev(const char *Cmd)
 void clearCommandBuffer()
 {
     //This is a very simple operation
+       pthread_mutex_lock(&cmdBufferMutex);
     cmd_tail = cmd_head;
+       pthread_mutex_unlock(&cmdBufferMutex);
 }
 
 /**
@@ -96,6 +101,7 @@ void clearCommandBuffer()
  */
 void storeCommand(UsbCommand *command)
 {
+       pthread_mutex_lock(&cmdBufferMutex);
     if( ( cmd_head+1) % CMD_BUFFER_SIZE == cmd_tail)
     {
         //If these two are equal, we're about to overwrite in the
@@ -107,8 +113,10 @@ void storeCommand(UsbCommand *command)
     memcpy(destination, command, sizeof(UsbCommand));
 
     cmd_head = (cmd_head +1) % CMD_BUFFER_SIZE; //increment head and wrap
-
+       pthread_mutex_unlock(&cmdBufferMutex);
 }
+
+
 /**
  * @brief getCommand gets a command from an internal circular buffer.
  * @param response location to write command
@@ -116,8 +124,10 @@ void storeCommand(UsbCommand *command)
  */
 int getCommand(UsbCommand* response)
 {
+       pthread_mutex_lock(&cmdBufferMutex);
     //If head == tail, there's nothing to read, or if we just got initialized
     if(cmd_head == cmd_tail){
+               pthread_mutex_unlock(&cmdBufferMutex);
         return 0;
     }
     //Pick out the next unread command
@@ -125,11 +135,11 @@ int getCommand(UsbCommand* response)
     memcpy(response, last_unread, sizeof(UsbCommand));
     //Increment tail - this is a circular buffer, so modulo buffer size
     cmd_tail = (cmd_tail +1 ) % CMD_BUFFER_SIZE;
-
+       pthread_mutex_unlock(&cmdBufferMutex);
     return 1;
-
 }
 
+
 /**
  * Waits for a certain response type. This method waits for a maximum of
  * ms_timeout milliseconds for a specified response command.
@@ -139,43 +149,54 @@ int getCommand(UsbCommand* response)
  * @param ms_timeout
  * @return true if command was returned, otherwise false
  */
-bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
+bool WaitForResponseTimeoutW(uint32_t cmd, UsbCommand* response, size_t ms_timeout, bool show_warning) {
   
-  UsbCommand resp;
+       UsbCommand resp;
        
-       if (response == NULL)
-    response = &resp;
-
-
-  // Wait until the command is received
-  for(size_t dm_seconds=0; dm_seconds < ms_timeout/10; dm_seconds++) {
+       if (response == NULL) {
+               response = &resp;
+       }
 
+       uint64_t start_time = msclock();
+       
+       // Wait until the command is received
+       while (true) {
                while(getCommand(response)) {
-          if(response->cmd == cmd){
-          return true;
-          }
-      }
-        msleep(10); // XXX ugh
-        if (dm_seconds == 200) { // Two seconds elapsed
-          PrintAndLog("Waiting for a response from the proxmark...");
-          PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
-        }
+                       if(response->cmd == cmd){
+                               return true;
+                       }
+               }
+               if (msclock() - start_time > ms_timeout) {
+                       break;
+               }
+               if (msclock() - start_time > 2000 && show_warning) {
+                       PrintAndLog("Waiting for a response from the proxmark...");
+                       PrintAndLog("Don't forget to cancel its operation first by pressing on the button");
+                       break;
+               }
        }
-    return false;
+       return false;
+}
+
+
+bool WaitForResponseTimeout(uint32_t cmd, UsbCommand* response, size_t ms_timeout) {
+       return WaitForResponseTimeoutW(cmd, response, ms_timeout, true);
 }
 
 bool WaitForResponse(uint32_t cmd, UsbCommand* response) {
-       return WaitForResponseTimeout(cmd,response,-1);
+       return WaitForResponseTimeoutW(cmd, response, -1, true);
 }
 
+
 //-----------------------------------------------------------------------------
 // Entry point into our code: called whenever the user types a command and
 // then presses Enter, which the full command line that they typed.
 //-----------------------------------------------------------------------------
-void CommandReceived(char *Cmd) {
-  CmdsParse(CommandTable, Cmd);
+int CommandReceived(char *Cmd) {
+       return CmdsParse(CommandTable, Cmd);
 }
 
+
 //-----------------------------------------------------------------------------
 // Entry point into our code: called whenever we received a packet over USB
 // that we weren't necessarily expecting, for example a debug print.
@@ -185,10 +206,11 @@ void UsbCommandReceived(UsbCommand *UC)
        switch(UC->cmd) {
                // First check if we are handling a debug message
                case CMD_DEBUG_PRINT_STRING: {
-                       char s[USB_CMD_DATA_SIZE+1] = {0x00};
+                       char s[USB_CMD_DATA_SIZE+1];
+                       memset(s, 0x00, sizeof(s));
                        size_t len = MIN(UC->arg[0],USB_CMD_DATA_SIZE);
                        memcpy(s,UC->d.asBytes,len);
-                       PrintAndLog("#db# %s       ", s);
+                       PrintAndLog("#db# %s", s);
                        return;
                } break;
 
@@ -199,12 +221,13 @@ void UsbCommandReceived(UsbCommand *UC)
 
                case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K: {
                        memcpy(sample_buf+(UC->arg[0]),UC->d.asBytes,UC->arg[1]);
+                       return;
                } break;
 
                default:
+                       storeCommand(UC);
                        break;
        }
 
-       storeCommand(UC);
 }