From d937614705989b9e71c366e5fe61751ba0d1a2eb Mon Sep 17 00:00:00 2001
From: Plex <thinkplex@riseup.net>
Date: Sun, 24 Oct 2021 23:33:48 +0200
Subject: readValInt

---
 mcping    | Bin 17840 -> 18008 bytes
 mcping.c  |  12 ++++++------
 mctypes.c |  15 +++++++++++++--
 mctypes.h |   4 ++--
 4 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/mcping b/mcping
index 6ab6d49..b598bc6 100755
Binary files a/mcping and b/mcping differ
diff --git a/mcping.c b/mcping.c
index a228114..084b481 100644
--- a/mcping.c
+++ b/mcping.c
@@ -22,11 +22,11 @@ int main(int argc, char *argv[])
 	}
 	varint n;
 	n = writeVarInt(atoi(argv[1]));
-	while((*n & 0b10000000) != 0) {
-		printf("%02X ", *n);
-		n++;
-	}
-	printf("%02X ", *n);
-	printf("\n");
+	// while((*n & 0b10000000) != 0) {
+		// printf("%02X ", *n);
+		// n++;
+	// }
+	// printf("%02X\n", *n);
+	printf("%d\n", readVarInt(n));
 	return 0;
 }
diff --git a/mctypes.c b/mctypes.c
index ad855e4..10d083d 100644
--- a/mctypes.c
+++ b/mctypes.c
@@ -5,7 +5,6 @@
 
 varint writeVarInt(unsigned int x)
 {
-	// unsigned int v = x;
 	varint n = malloc(sizeof(u_int8_t));
 	unsigned int size = 1;
 	while(1) {
@@ -14,7 +13,7 @@ varint writeVarInt(unsigned int x)
 		x >>= 7;
 		if(x == 0)
 			return n;
-		n[size-1] |= 0b10000000;
+		n[size-1] |= 0x80;
 		size++;
 	}
 	return n;
@@ -34,3 +33,15 @@ writeVarInt(varint x, int s)
 		x >>= 7;
 	}
 } */
+
+int readVarInt(varint x)
+{
+	unsigned int offset = 0;
+	unsigned int res = 0;
+	do {
+		if(offset == 5) exit(EXIT_FAILURE);
+		res |= x[offset] << offset*7;
+		offset++;
+	} while ((x[offset-1] & 0b10000000) != 0);
+	return (int) res;
+}
diff --git a/mctypes.h b/mctypes.h
index 3fe4a7f..7dad6db 100644
--- a/mctypes.h
+++ b/mctypes.h
@@ -10,9 +10,9 @@ typedef struct {
 typedef struct {
 	varint length;
 	varint id;
-	char *data;;
+	char *data;
 } packet;
 
 
-int writeVarInt(varint x);
+int readVarInt(varint x);
 varint writeVarInt(unsigned int x);
-- 
cgit v1.2.3