Experimenting with hacking iclass

[proxmark3-svn] / client / cmdlfhitag.c

diff --git a/client/cmdlfhitag.c b/client/cmdlfhitag.c
index c648f6a5912862697219d76f735b3f73ce00a0f9..af61bd36690e965a45388199bbddd24359ad3b64 100644 (file)
--- a/client/cmdlfhitag.c
+++ b/client/cmdlfhitag.c
@@ -24,6 +24,10 @@
 
 static int CmdHelp(const char *Cmd);
 
+size_t nbytes(size_t nbits) {
+       return (nbits/8)+((nbits%8)>0);
+}
+
 int CmdLFHitagList(const char *Cmd)
 {
   uint8_t got[3000];
@@ -31,8 +35,8 @@ int CmdLFHitagList(const char *Cmd)
   WaitForResponse(CMD_ACK,NULL);
 
   PrintAndLog("recorded activity:");
-  PrintAndLog(" ETU     :rssi: who bytes");
-  PrintAndLog("---------+----+----+-----------");
+  PrintAndLog(" ETU     :nbits: who bytes");
+  PrintAndLog("---------+-----+----+-----------");
 
   int i = 0;
   int prev = -1;
@@ -54,7 +58,6 @@ int CmdLFHitagList(const char *Cmd)
       isResponse = 0;
     }
 
-    int metric = 0;
     int parityBits = *((uint32_t *)(got+i+4));
     // 4 bytes of additional information...
     // maximum of 32 additional parity bit information
@@ -63,7 +66,8 @@ int CmdLFHitagList(const char *Cmd)
     // at each quarter bit period we can send power level (16 levels)
     // or each half bit period in 256 levels.
 
-    int len = got[i+8];
+    int bits = got[i+8];
+    int len = nbytes(got[i+8]);
 
     if (len > 100) {
       break;
@@ -96,27 +100,19 @@ int CmdLFHitagList(const char *Cmd)
       }
     }
 
-    char metricString[100];
-    if (isResponse) {
-      sprintf(metricString, "%3d", metric);
-    } else {
-      strcpy(metricString, "   ");
-    }
-
-    PrintAndLog(" +%7d: %s: %s %s",
+    PrintAndLog(" +%7d:  %3d: %s %s",
       (prev < 0 ? 0 : (timestamp - prev)),
-      metricString,
+      bits,
       (isResponse ? "TAG" : "   "),
       line);
 
 
    if (pf) {
-      fprintf(pf," +%7d: %s: %s %s %s",
+      fprintf(pf," +%7d:  %3d: %s %s\n",
                                        (prev < 0 ? 0 : (timestamp - prev)),
-                                       metricString,
+                                       bits,
                                        (isResponse ? "TAG" : "   "),
-                                       line,
-                                       "\n");
+                                       line);
     }
        
     prev = timestamp;
@@ -151,7 +147,10 @@ int CmdLFHitagSim(const char *Cmd) {
                        return 1;
                }
                tag_mem_supplied = true;
-               fread(c.d.asBytes,48,1,pf);
+               if (fread(c.d.asBytes,48,1,pf) == 0) {
+      PrintAndLog("Error: File reading error");
+                       return 1;
+    }
                fclose(pf);
        } else {
                tag_mem_supplied = false;