X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d9ed4e191445d342d11e35fbe4886980e40771a8..c08c796e8d11fc26af157545439c918c9603056a:/client/mifarehost.c

diff --git a/client/mifarehost.c b/client/mifarehost.c
index 97e53f1e..b7cd3b59 100644
--- a/client/mifarehost.c
+++ b/client/mifarehost.c
@@ -125,8 +125,8 @@ int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo
 	p4->even = 0; p4->odd = 0;
 	statelists[0].len = p3 - statelists[0].head.slhead;
 	statelists[1].len = p4 - statelists[1].head.slhead;
-	statelists[0].tail.sltail=--p3;
-	statelists[1].tail.sltail=--p4;
+	statelists[0].tail.sltail = --p3;
+	statelists[1].tail.sltail = --p4;
 
 	// the statelists now contain possible keys. The key we are searching for must be in the
 	// intersection of both lists. Create the intersection:
@@ -412,14 +412,20 @@ int loadTraceCard(uint8_t *tuid, uint8_t uidlen) {
 		memset(buf, 0, sizeof(buf));
 		if (fgets(buf, sizeof(buf), f) == NULL) {
 			PrintAndLog("No trace file found or reading error.");
-			fclose(f);
+			if (f) {
+				fclose(f);
+				f = NULL;
+			}
 			return 2;
 		}
 
 		if (strlen(buf) < 32){
 			if (feof(f)) break;
 			PrintAndLog("File content error. Block data must include 32 HEX symbols");
-			fclose(f);
+			if (f) {
+				fclose(f);
+				f = NULL;
+			}
 			return 2;
 		}
 		for (i = 0; i < 32; i += 2)
@@ -429,7 +435,10 @@ int loadTraceCard(uint8_t *tuid, uint8_t uidlen) {
 
 		blockNum++;
 	}
-	fclose(f);
+	if (f) {
+		fclose(f);
+		f = NULL;
+	}
 	return 0;
 }
 
@@ -447,7 +456,10 @@ int saveTraceCard(void) {
 		fprintf(f,"\n");
 	}
 	fflush(f);
-	fclose(f);
+	if (f) {
+		fclose(f);
+		f = NULL;
+	}
 	return 0;
 }
 
@@ -654,12 +666,12 @@ int mfTraceDecode(uint8_t *data_src, int len, bool wantSaveToEmlFile) {
 
 int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len){
 	PrintAndLog("\nEncrypted data: [%s]", sprint_hex(data, len) );
-	struct Crypto1State *pcs = NULL;
+	struct Crypto1State *s;
 	ks2 = ar_enc ^ prng_successor(nt, 64);
 	ks3 = at_enc ^ prng_successor(nt, 96);
-	pcs = lfsr_recovery64(ks2, ks3);
-	mf_crypto1_decrypt(pcs, data, len, FALSE);
+	s = lfsr_recovery64(ks2, ks3);
+	mf_crypto1_decrypt(s, data, len, FALSE);
 	PrintAndLog("Decrypted data: [%s]", sprint_hex(data, len) );
-	crypto1_destroy(pcs);
+	crypto1_destroy(s);
 	return 0;
 }