Potential fix for 0-length usb packets seen on OSX

[proxmark3-svn] / client / cmdhflegic.c

diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c
index 8366b09bdb9bf69322a1c1d32669875bfc5f9631..7ee601b232888aaece3aa1fe70b42d1731879d85 100644 (file)
--- a/client/cmdhflegic.c
+++ b/client/cmdhflegic.c
@@ -10,14 +10,13 @@
 
 #include <stdio.h>
 #include <string.h>
 
 #include <stdio.h>
 #include <string.h>

-//#include "proxusb.h"

 #include "proxmark3.h"
 #include "data.h"
 #include "ui.h"
 #include "cmdparser.h"
 #include "cmdhflegic.h"
 #include "cmdmain.h"
 #include "proxmark3.h"
 #include "data.h"
 #include "ui.h"
 #include "cmdparser.h"
 #include "cmdhflegic.h"
 #include "cmdmain.h"

-
+#include "util.h"

 static int CmdHelp(const char *Cmd);
 
 static command_t CommandTable[] = 
 static int CmdHelp(const char *Cmd);
 
 static command_t CommandTable[] = 


@@ -219,7 +218,24 @@ int CmdLegicRFRead(const char *Cmd)
 
 int CmdLegicLoad(const char *Cmd)
 {
 
 int CmdLegicLoad(const char *Cmd)
 {

-    FILE *f = fopen(Cmd, "r");
+       char filename[FILE_PATH_SIZE] = {0x00};
+       int len = 0;
+       
+       if (param_getchar(Cmd, 0) == 'h' || param_getchar(Cmd, 0)== 0x00) {
+               PrintAndLog("It loads datasamples from the file `filename`");
+               PrintAndLog("Usage:  hf legic load <file name>");
+               PrintAndLog(" sample: hf legic load filename");
+               return 0;
+       }
+
+       len = strlen(Cmd);      
+       if (len > FILE_PATH_SIZE) {
+               PrintAndLog("Filepath too long (was %s bytes), max allowed is %s ", len, FILE_PATH_SIZE);
+               return 0;
+       }
+       memcpy(filename, Cmd, len);
+
+    FILE *f = fopen(filename, "r");

     if(!f) {
         PrintAndLog("couldn't open '%s'", Cmd);
         return -1;
     if(!f) {
         PrintAndLog("couldn't open '%s'", Cmd);
         return -1;


@@ -252,7 +268,7 @@ int CmdLegicSave(const char *Cmd)
   int requested = 1024;
   int offset = 0;
   int delivered = 0;
   int requested = 1024;
   int offset = 0;
   int delivered = 0;

-  char filename[1024];
+  char filename[FILE_PATH_SIZE];

   uint8_t got[1024];
   
   sscanf(Cmd, " %s %i %i", filename, &requested, &offset);
   uint8_t got[1024];
   
   sscanf(Cmd, " %s %i %i", filename, &requested, &offset);


@@ -266,7 +282,6 @@ int CmdLegicSave(const char *Cmd)
     int remainder = requested % 8;
     requested = requested + 8 - remainder;
   }
     int remainder = requested % 8;
     requested = requested + 8 - remainder;
   }

-  

   if (offset + requested > sizeof(got)) {
     PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 1024");
     return 0;
   if (offset + requested > sizeof(got)) {
     PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > 1024");
     return 0;