cmdhf14b.c: fixing a crash in the crc computation when missing data (e.g. with 'hf 14b raw -c -p')

2013-10-20 11:46:51 +00:00
parent 3f7c993d78
commit 06b82e6a6d
1 changed files with 5 additions and 0 deletions
--- a/client/cmdhf14b.c
+++ b/client/cmdhf14b.c
@@ -334,6 +334,11 @@ int CmdHF14BCmdRaw (const char *cmd) {
        PrintAndLog("Invalid char on input");
        return 0;
    }
+    if (datalen == 0)
+    {
+      PrintAndLog("Missing data input");
+      return 0;
+    }
    if(crc)
    {
        uint8_t first, second;