Fix prolematic return codes in mifare.

Parts of the code returned positive values for error codes, which
could result in the client exiting (return value 2).

client/src/cmdhfmf.c

@@ -115,14 +115,14 @@ static int GetHFMF14AUID(uint8_t *uid, int *uidlen) {
     if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
         DropField();
-        return 0;
+        return PM3_ERFTRANS;
     }
 
     iso14a_card_select_t card;
     memcpy(&card, (iso14a_card_select_t *)resp.data.asBytes, sizeof(iso14a_card_select_t));
     memcpy(uid, card.uid, card.uidlen * sizeof(uint8_t));
     *uidlen = card.uidlen;
-    return 1;
+    return PM3_SUCCESS;
 }
 
 static char *GenerateFilename(const char *prefix, const char *suffix) {
@@ -133,8 +133,8 @@ static char *GenerateFilename(const char *prefix, const char *suffix) {
     int uidlen = 0;
     char *fptr = calloc(sizeof(char) * (strlen(prefix) + strlen(suffix)) + sizeof(uid) * 2 + 1,  sizeof(uint8_t));
 
-    GetHFMF14AUID(uid, &uidlen);
+    int res = GetHFMF14AUID(uid, &uidlen);
-    if (!uidlen) {
+    if (res != PM3_SUCCESS || !uidlen) {
         PrintAndLogEx(WARNING, "No tag found.");
         free(fptr);
         return NULL;
@@ -234,7 +234,7 @@ static bool mfc_value(const uint8_t *d, int32_t *val) {
     if (val) {
         *val = a;
     }
-    return (val_checks);
+    return val_checks;
 }
 static void mf_print_block(uint8_t blockno, uint8_t *d, bool verbose) {
     if (blockno == 0) {
@@ -788,7 +788,7 @@ static int CmdHF14AMfDump(const char *Cmd) {
     uint64_t select_status = resp.oldarg[0];
     if (select_status == 0) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
-        return select_status;
+        return PM3_SUCCESS;
     }
 
     // store card info
@@ -4907,7 +4907,7 @@ static int CmdHF14AMfCSave(const char *Cmd) {
     uint64_t select_status = resp.oldarg[0];
     if (select_status == 0) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
-        return select_status;
+        return PM3_SUCCESS;
     }
 
     // store card info
@@ -5058,7 +5058,7 @@ static int CmdHF14AMfCView(const char *Cmd) {
 
     if (select_status == 0) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
-        return select_status;
+        return PM3_ERFTRANS;
     }
 
     iso14a_card_select_t card;
@@ -5826,7 +5826,7 @@ int CmdHFMFNDEFFormat(const char *Cmd) {
     uint64_t select_status = resp.oldarg[0];
     if (select_status == 0) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
-        return select_status;
+        return PM3_SUCCESS;
     }
 
     DropField();
@@ -6834,7 +6834,7 @@ static int CmdHF14AGen4View(const char *Cmd) {
 
     if (select_status == 0) {
         PrintAndLogEx(WARNING, "iso14443a card select failed");
-        return select_status;
+        return PM3_SUCCESS;
     }
 
     iso14a_card_select_t card;

client/src/mifare/mad.c

@@ -317,7 +317,7 @@ int MAD1DecodeAndPrint(uint8_t *sector, bool swapmad, bool verbose, bool *haveMA
 
     int ibs = MADInfoByteDecode(sector, swapmad, 1, verbose);
 
-    if (ibs) {
+    if (ibs > 0) {
         PrintAndLogEx(SUCCESS, "Card publisher sector " _MAGENTA_("0x%02x"), ibs);
     } else {
         PrintAndLogEx(WARNING, "Card publisher " _RED_("not") " present " _YELLOW_("0x%02x"), ibs);
@@ -360,7 +360,7 @@ int MAD2DecodeAndPrint(uint8_t *sector, bool swapmad, bool verbose) {
     }
 
     int ibs = MADInfoByteDecode(sector, swapmad, 2, verbose);
-    if (ibs) {
+    if (ibs > 0) {
         PrintAndLogEx(SUCCESS, "Card publisher sector " _MAGENTA_("0x%02x"), ibs);
     } else {
         PrintAndLogEx(WARNING, "Card publisher " _RED_("not") " present " _YELLOW_("0x%02x"), ibs);

client/src/mifare/mifare4.c

@@ -198,7 +198,7 @@ int MifareAuth4(mf4Session_t *mf4session, uint8_t *keyn, uint8_t *key, bool acti
     if (res) {
         if (!silentMode) PrintAndLogEx(ERR, "Exchange raw error: %d", res);
         if (dropFieldIfError) DropField();
-        return 2;
+        return PM3_ERFTRANS;
     }
 
     if (verbose)
@@ -207,19 +207,19 @@ int MifareAuth4(mf4Session_t *mf4session, uint8_t *keyn, uint8_t *key, bool acti
     if (datalen < 1) {
         if (!silentMode) PrintAndLogEx(ERR, "Card response wrong length: %d", datalen);
         if (dropFieldIfError) DropField();
-        return 3;
+        return PM3_EWRONGANSWER;
     }
 
     if (data[0] != 0x90) {
         if (!silentMode) PrintAndLogEx(ERR, "Card response error: %02x %s", data[0], mfpGetErrorDescription(data[0]));
         if (dropFieldIfError) DropField();
-        return 3;
+        return PM3_EWRONGANSWER;
     }
 
     if (datalen != 19) { // code 1b + 16b + crc 2b
         if (!silentMode) PrintAndLogEx(ERR, "Card response must be 19 bytes long instead of: %d", datalen);
         if (dropFieldIfError) DropField();
-        return 3;
+        return PM3_EWRONGANSWER;
     }
 
     aes_decode(NULL, key, &data[1], RndB, 16);
@@ -242,7 +242,7 @@ int MifareAuth4(mf4Session_t *mf4session, uint8_t *keyn, uint8_t *key, bool acti
     if (res) {
         if (!silentMode) PrintAndLogEx(ERR, "Exchange raw error: %d", res);
         if (dropFieldIfError) DropField();
-        return 4;
+        return PM3_ERFTRANS;
     }
 
     if (verbose)
@@ -262,7 +262,7 @@ int MifareAuth4(mf4Session_t *mf4session, uint8_t *keyn, uint8_t *key, bool acti
             PrintAndLogEx(ERR, "RndA   card: %s", sprint_hex(&raw[4], 16));
         }
         if (dropFieldIfError) DropField();
-        return 5;
+        return PM3_EWRONGANSWER;
     }
 
     if (verbose) {
@@ -319,7 +319,7 @@ int MifareAuth4(mf4Session_t *mf4session, uint8_t *keyn, uint8_t *key, bool acti
     if (verbose)
         PrintAndLogEx(INFO, "Authentication OK");
 
-    return 0;
+    return PM3_SUCCESS;
 }
 
 static int intExchangeRAW14aPlus(uint8_t *datain, int datainlen, bool activateField, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen) {