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cppchecker - integeroverflow

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iceman1001 2021-02-24 18:00:38 +01:00
commit 3fd8a640c1
1 changed files with 8 additions and 5 deletions
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13
client/src/cmdhf14b.c
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@ -26,7 +26,7 @@
#include "mifare/ndef.h" // NDEFRecordsDecodeAndPrint #include "mifare/ndef.h" // NDEFRecordsDecodeAndPrint
#include "aidsearch.h" #include "aidsearch.h"
#define MAX_14B_TIMEOUT (uint32_t)40542464 // = (2^32-1) * (8*16) / 13560000Hz * 1000ms/s #define MAX_14B_TIMEOUT 40542464U // = (2^32-1) * (8*16) / 13560000Hz * 1000ms/s
#define TIMEOUT 2000 #define TIMEOUT 2000
#define APDU_TIMEOUT 2000 #define APDU_TIMEOUT 2000
@ -343,17 +343,20 @@ static int CmdHF14BCmdRaw(const char *Cmd) {
} }
CLIParserFree(ctx); CLIParserFree(ctx);
uint32_t time_wait = 0; uint32_t time_wait = 0;
if (user_timeout > 0) { if (user_timeout > 0) {
flags |= ISO14B_SET_TIMEOUT; flags |= ISO14B_SET_TIMEOUT;
if (user_timeout > MAX_14B_TIMEOUT) {
user_timeout = MAX_14B_TIMEOUT; uint32_t max_timeout = user_timeout;
if (max_timeout > MAX_14B_TIMEOUT) {
max_timeout = MAX_14B_TIMEOUT;
PrintAndLogEx(INFO, "set timeout to 40542 seconds (11.26 hours). The max we can wait for response"); PrintAndLogEx(INFO, "set timeout to 40542 seconds (11.26 hours). The max we can wait for response");
} }
time_wait = (uint32_t)((13560000 / 1000 / (8 * 16)) * user_timeout); // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us) time_wait = ((13560000 / 1000 / (8 * 16)) * max_timeout); // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us)
if (verbose) if (verbose)
PrintAndLogEx(INFO, "using timeout %u", user_timeout); PrintAndLogEx(INFO, "using timeout %u", max_timeout);
} }
if (keep_field_on == 0) if (keep_field_on == 0)