Snippets

Richard Yu VCMP Lan

Updated by Richard Yu
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File VCMPLan.c Modified

  • Ignore whitespace
  • Hide word diff 
 int main()
 {
 #ifdef WIN32
-	WSADATA wsaData;
-	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != NO_ERROR)
-		return EXIT_FAILURE;
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(2, 2), &wsaData) != NO_ERROR)
+        return EXIT_FAILURE;
 #endif
 
-	uint16_t portStart = 0, portEnd = 0;
-	printf("Enter port range: Start:");
-	scanf("%hu", &portStart);
-	printf("End:");
-	scanf("%hu", &portEnd);
+    uint16_t portStart = 0, portEnd = 0;
+    printf("Enter port range: Start:");
+    scanf("%hu", &portStart);
+    printf("End:");
+    scanf("%hu", &portEnd);
 
-	SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
-	if (!s)
-		return EXIT_FAILURE;
+    SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
+    if (!s)
+        return EXIT_FAILURE;
 
-	BOOL broadcast = TRUE;
-	setsockopt(s, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof(broadcast));
+    BOOL broadcast = TRUE;
+    setsockopt(s, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof(broadcast));
 
-	struct sockaddr_in bindaddr = { AF_INET };
+    struct sockaddr_in bindaddr = { AF_INET };
 
-	if (bind(s, &bindaddr, 16) != NO_ERROR)
-	{
-		closesocket(s);
-		return EXIT_FAILURE;
-	}
+    if (bind(s, &bindaddr, 16) != NO_ERROR)
+    {
+        closesocket(s);
+        return EXIT_FAILURE;
+    }
 
-	struct sockaddr_in sendaddr = { AF_INET };
-	sendaddr.sin_addr.s_addr = INADDR_BROADCAST;
-	for (uint16_t i = portStart; i <= portEnd; ++i)
-	{
-		sendaddr.sin_port = htons(i);
-		char buffer[] = { 0x56, 0x43, 0x4D, 0x50, 0xFF, 0xFF, 0xFF, 0xFF, i & 0xFF, i >> 8 & 0xFF, 'i' };
-		sendto(s, buffer, sizeof(buffer), 0, &sendaddr, sizeof(sendaddr));
-	}
+    struct sockaddr_in sendaddr = { AF_INET };
+    sendaddr.sin_addr.s_addr = INADDR_BROADCAST;
+    for (uint16_t i = portStart; i <= portEnd; ++i)
+    {
+        sendaddr.sin_port = htons(i);
+        char buffer[] = { 0x56, 0x43, 0x4D, 0x50, 0xFF, 0xFF, 0xFF, 0xFF, i & 0xFF, i >> 8 & 0xFF, 'i' };
+        sendto(s, buffer, sizeof(buffer), 0, &sendaddr, sizeof(sendaddr));
+    }
 
-	while (1)
-	{
-		struct sockaddr_in recvaddr = { 0 };
-		int size = sizeof(recvaddr);
-		char *recvBuff = calloc(532, sizeof(char));
-		int recvlen = recvfrom(s, recvBuff, 532, 0, &recvaddr, &size);
-		if (recvlen != -1)
-		{
-			char *buf = recvBuff;
-			if (*(int *)buf == 0x3430504D) // MP04
-			{
-				char *ip = inet_ntoa(recvaddr.sin_addr);
-				uint16_t port = ntohs(recvaddr.sin_port);
+    while (1)
+    {
+        struct sockaddr_in recvaddr = { 0 };
+        int size = sizeof(recvaddr);
+        char *recvBuff = calloc(532, sizeof(char));
+        int recvlen = recvfrom(s, recvBuff, 532, 0, &recvaddr, &size);
+        if (recvlen != -1)
+        {
+            char *buf = recvBuff;
+            if (*(int *)buf == 0x3430504D) // MP04
+            {
+                char *ip = inet_ntoa(recvaddr.sin_addr);
+                uint16_t port = ntohs(recvaddr.sin_port);
 
-				buf += 11;
-				char version[12];
-				memmove(version, buf, sizeof(version));
+                buf += 11;
+                char version[12];
+                memmove(version, buf, sizeof(version));
 
-				buf += 17;
-				int strlen = *(int *)buf;
-				char *servername = alloca(strlen + 1);
-				buf += 4;
-				strncpy(servername, buf, strlen);
-				servername[strlen] = 0;
-				buf += strlen;
+                buf += 17;
+                int strlen = *(int *)buf;
+                char *servername = alloca(strlen + 1);
+                buf += 4;
+                strncpy(servername, buf, strlen);
+                servername[strlen] = 0;
+                buf += strlen;
 
-				strlen = *(int *)buf;
-				char *gamemode = alloca(strlen + 1);
-				buf += 4;
-				strncpy(gamemode, buf, strlen);
-				gamemode[strlen] = 0;
-				buf += strlen;
+                strlen = *(int *)buf;
+                char *gamemode = alloca(strlen + 1);
+                buf += 4;
+                strncpy(gamemode, buf, strlen);
+                gamemode[strlen] = 0;
+                buf += strlen;
 
-				strlen = *(int *)buf;
-				char *mapname = alloca(strlen + 1);
-				buf += 4;
-				strncpy(mapname, buf, strlen);
-				mapname[strlen] = 0;
+                strlen = *(int *)buf;
+                char *mapname = alloca(strlen + 1);
+                buf += 4;
+                strncpy(mapname, buf, strlen);
+                mapname[strlen] = 0;
 
-				printf("%s:%hu|%s|%s|%s|%s\n", ip, port, version, servername, gamemode, mapname);
-			}
-		}
-		free(recvBuff);
-	}
-	return 0;
+                printf("%s:%hu|%s|%s|%s|%s\n", ip, port, version, servername, gamemode, mapname);
+            }
+        }
+        free(recvBuff);
+    }
+    return 0;
 }
Created by Richard Yu
View revision

File VCMPLan.c Added

  • Ignore whitespace
  • Hide word diff 
+#include <stdio.h>
+#include <stdint.h>
+#include <malloc.h>
+#include <winsock.h>
+
+int main()
+{
+#ifdef WIN32
+	WSADATA wsaData;
+	if (WSAStartup(MAKEWORD(2, 2), &wsaData) != NO_ERROR)
+		return EXIT_FAILURE;
+#endif
+
+	uint16_t portStart = 0, portEnd = 0;
+	printf("Enter port range: Start:");
+	scanf("%hu", &portStart);
+	printf("End:");
+	scanf("%hu", &portEnd);
+
+	SOCKET s = socket(AF_INET, SOCK_DGRAM, 0);
+	if (!s)
+		return EXIT_FAILURE;
+
+	BOOL broadcast = TRUE;
+	setsockopt(s, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof(broadcast));
+
+	struct sockaddr_in bindaddr = { AF_INET };
+
+	if (bind(s, &bindaddr, 16) != NO_ERROR)
+	{
+		closesocket(s);
+		return EXIT_FAILURE;
+	}
+
+	struct sockaddr_in sendaddr = { AF_INET };
+	sendaddr.sin_addr.s_addr = INADDR_BROADCAST;
+	for (uint16_t i = portStart; i <= portEnd; ++i)
+	{
+		sendaddr.sin_port = htons(i);
+		char buffer[] = { 0x56, 0x43, 0x4D, 0x50, 0xFF, 0xFF, 0xFF, 0xFF, i & 0xFF, i >> 8 & 0xFF, 'i' };
+		sendto(s, buffer, sizeof(buffer), 0, &sendaddr, sizeof(sendaddr));
+	}
+
+	while (1)
+	{
+		struct sockaddr_in recvaddr = { 0 };
+		int size = sizeof(recvaddr);
+		char *recvBuff = calloc(532, sizeof(char));
+		int recvlen = recvfrom(s, recvBuff, 532, 0, &recvaddr, &size);
+		if (recvlen != -1)
+		{
+			char *buf = recvBuff;
+			if (*(int *)buf == 0x3430504D) // MP04
+			{
+				char *ip = inet_ntoa(recvaddr.sin_addr);
+				uint16_t port = ntohs(recvaddr.sin_port);
+
+				buf += 11;
+				char version[12];
+				memmove(version, buf, sizeof(version));
+
+				buf += 17;
+				int strlen = *(int *)buf;
+				char *servername = alloca(strlen + 1);
+				buf += 4;
+				strncpy(servername, buf, strlen);
+				servername[strlen] = 0;
+				buf += strlen;
+
+				strlen = *(int *)buf;
+				char *gamemode = alloca(strlen + 1);
+				buf += 4;
+				strncpy(gamemode, buf, strlen);
+				gamemode[strlen] = 0;
+				buf += strlen;
+
+				strlen = *(int *)buf;
+				char *mapname = alloca(strlen + 1);
+				buf += 4;
+				strncpy(mapname, buf, strlen);
+				mapname[strlen] = 0;
+
+				printf("%s:%hu|%s|%s|%s|%s\n", ip, port, version, servername, gamemode, mapname);
+			}
+		}
+		free(recvBuff);
+	}
+	return 0;
+}
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