FIX: crash on Bionic libc if CloseProxmark is called twice. (#672)

[proxmark3-svn] / client / cmdlf.c

diff --git a/client/cmdlf.c b/client/cmdlf.c
index 42f73fa1f6592bd1f3989936ae4f08abf4209b4b..c09a299ce1f32e9cb11fec9c57a30d14ca115ee2 100644 (file)
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -8,21 +8,21 @@
 // Low frequency commands
 //-----------------------------------------------------------------------------
 
+#include "cmdlf.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdint.h>
-#include "proxmark3.h"
-#include "cmdlf.h"
+#include "comms.h"
 #include "lfdemod.h"     // for psk2TOpsk1
 #include "util.h"        // for parsing cli command utils
 #include "ui.h"          // for show graph controls
 #include "graph.h"       // for graph data
 #include "cmdparser.h"   // for getting cli commands included in cmdmain.h
 #include "cmdmain.h"     // for sending cmds to device
-#include "data.h"        // for GetFromBigBuf
 #include "cmddata.h"     // for `lf search`
 #include "cmdlfawid.h"   // for awid menu
 #include "cmdlfem4x.h"   // for em4x menu
@@ -327,7 +327,7 @@ int CmdLFSetConfig(const char *Cmd)
 }
 
 bool lf_read(bool silent, uint32_t samples) {
-       if (offline) return false;
+       if (IsOffline()) return false;
        UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {silent,samples,0}};
        clearCommandBuffer();
        //And ship it to device
@@ -870,7 +870,7 @@ int CmdVchDemod(const char *Cmd)
 int CheckChipType(char cmdp) {
        uint32_t wordData = 0;
 
-       if (offline || cmdp == '1') return 0;
+       if (IsOffline() || cmdp == '1') return 0;
 
        save_restoreGB(GRAPH_SAVE);
        save_restoreDB(GRAPH_SAVE);
@@ -915,7 +915,7 @@ int CmdLFfind(const char *Cmd)
                return 0;
        }
 
-       if (!offline && (cmdp != '1')) {
+       if (!IsOffline() && (cmdp != '1')) {
                lf_read(true, 30000);
        } else if (GraphTraceLen < minLength) {
                PrintAndLog("Data in Graphbuffer was too small.");
@@ -931,7 +931,7 @@ int CmdLFfind(const char *Cmd)
        // only run if graphbuffer is just noise as it should be for hitag/cotag
        if (graphJustNoise(GraphBuffer, testLen)) {
                // only run these tests if we are in online mode 
-               if (!offline && (cmdp != '1')) {
+               if (!IsOffline() && (cmdp != '1')) {
                        // test for em4x05 in reader talk first mode.
                        if (EM4x05Block0Test(&wordData)) {
                                PrintAndLog("\nValid EM4x05/EM4x69 Chip Found\nUse lf em 4x05readword/dump commands to read\n");
@@ -947,6 +947,7 @@ int CmdLFfind(const char *Cmd)
                                return 1;
                        }
                }
+               PrintAndLog("\nNo Data Found! - maybe not an LF tag?\n");
                return 0;
        }