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FIX: Coverity, resource leaks 'nd more.. in "lf t55xx bruteforce" nasty piece of code...

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This commit is contained in:
iceman1001 2016-01-13 12:50:18 +01:00
commit b891758968
1 changed files with 22 additions and 2 deletions
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24
client/cmdlft55xx.c
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@ -1387,7 +1387,10 @@ int CmdT55xxBruteForce(const char *Cmd) {
bool found = false; bool found = false;
char cmdp = param_getchar(Cmd, 0); char cmdp = param_getchar(Cmd, 0);
if (cmdp == 'h' || cmdp == 'H') return usage_t55xx_bruteforce(); if (cmdp == 'h' || cmdp == 'H') {
free(keyBlock);
return usage_t55xx_bruteforce();
}
if (cmdp == 'i' || cmdp == 'I') { if (cmdp == 'i' || cmdp == 'I') {
@ -1423,6 +1426,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
if (!p) { if (!p) {
PrintAndLog("Cannot allocate memory for defaultKeys"); PrintAndLog("Cannot allocate memory for defaultKeys");
free(keyBlock); free(keyBlock);
fclose(f);
return 2; return 2;
} }
keyBlock = p; keyBlock = p;
@ -1437,6 +1441,7 @@ int CmdT55xxBruteForce(const char *Cmd) {
if (keycnt == 0) { if (keycnt == 0) {
PrintAndLog("No keys found in file"); PrintAndLog("No keys found in file");
free(keyBlock);
return 1; return 1;
} }
PrintAndLog("Loaded %d keys", keycnt); PrintAndLog("Loaded %d keys", keycnt);
@ -1448,6 +1453,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
if (ukbhit()) { if (ukbhit()) {
getchar(); getchar();
printf("\naborted via keyboard!\n"); printf("\naborted via keyboard!\n");
free(keyBlock);
free(p);
return 0; return 0;
} }
@ -1458,6 +1465,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) { if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, testpwd)) {
PrintAndLog("Aquireing data from device failed. Quitting"); PrintAndLog("Aquireing data from device failed. Quitting");
free(keyBlock);
free(p);
return 0; return 0;
} }
@ -1465,10 +1474,14 @@ int CmdT55xxBruteForce(const char *Cmd) {
if ( found ) { if ( found ) {
PrintAndLog("Found valid password: [%08X]", testpwd); PrintAndLog("Found valid password: [%08X]", testpwd);
free(keyBlock);
free(p);
return 0; return 0;
} }
} }
PrintAndLog("Password NOT found."); PrintAndLog("Password NOT found.");
free(keyBlock);
free(p);
return 0; return 0;
} }
@ -1478,7 +1491,10 @@ int CmdT55xxBruteForce(const char *Cmd) {
start_password = param_get32ex(Cmd, 0, 0, 16); start_password = param_get32ex(Cmd, 0, 0, 16);
end_password = param_get32ex(Cmd, 1, 0, 16); end_password = param_get32ex(Cmd, 1, 0, 16);
if ( start_password >= end_password ) return usage_t55xx_bruteforce(); if ( start_password >= end_password ) {
free(keyBlock);
return usage_t55xx_bruteforce();
}
PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password); PrintAndLog("Search password range [%08X -> %08X]", start_password, end_password);
@ -1491,11 +1507,13 @@ int CmdT55xxBruteForce(const char *Cmd) {
if (ukbhit()) { if (ukbhit()) {
getchar(); getchar();
printf("\naborted via keyboard!\n"); printf("\naborted via keyboard!\n");
free(keyBlock);
return 0; return 0;
} }
if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) { if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, TRUE, i)) {
PrintAndLog("Aquireing data from device failed. Quitting"); PrintAndLog("Aquireing data from device failed. Quitting");
free(keyBlock);
return 0; return 0;
} }
found = tryDetectModulation(); found = tryDetectModulation();
@ -1510,6 +1528,8 @@ int CmdT55xxBruteForce(const char *Cmd) {
PrintAndLog("Found valid password: [%08x]", i); PrintAndLog("Found valid password: [%08x]", i);
else else
PrintAndLog("Password NOT found. Last tried: [%08x]", --i); PrintAndLog("Password NOT found. Last tried: [%08x]", --i);
free(keyBlock);
return 0; return 0;
} }