a nice connection demo from an irc user
committer: Markus Bröker <mbroeker@largo.homelinux.org>
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,8 @@
database \
gauss \
mem2swap \
- prog_limit
+ prog_limit \
+ connection
.SUFFIXES: .c .cc .asm
@@ -210,6 +211,10 @@
@echo Linking $< ...
@$(CPP) -o $@ $<
+connection: connection.o
+ @echo Linking $< ...
+ @$(CPP) -o $@ $<
+
.PHONY: clean uninstall
clean:
new file mode 100644
--- /dev/null
+++ b/connection.c
@@ -0,0 +1,71 @@
+/**
+ * test/demos/connection.c
+ * Copyright (C) 2008 mussolini
+ * Copyright (C) 2008 mbroeker
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <netdb.h>
+#include <arpa/inet.h>
+
+int connection (char *ip, unsigned short port)
+{
+ struct hostent *hs;
+ struct sockaddr_in sock;
+ int sockfd;
+
+ memset (&sock, 0, sizeof (sock));
+ sock.sin_family = AF_INET;
+ sock.sin_port = htons (port);
+
+ if ((sock.sin_addr.s_addr = inet_addr (ip)) == -1) {
+ if ((hs = gethostbyname (ip)) == NULL) {
+ perror ("[-] Error");
+ return -1;
+ }
+ sock.sin_family = hs->h_addrtype;
+ memcpy (&sock.sin_addr.s_addr, hs->h_addr, hs->h_length);
+ }
+
+ if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
+ perror ("[-] Error");
+ return -1;
+ }
+
+ if (connect (sockfd, (struct sockaddr *)&sock, sizeof (sock)) < 0) {
+ perror ("[-] Error ");
+ return -1;
+ }
+
+ return (sockfd);
+}
+
+int main (int argc, char **argv)
+{
+ char buffer[1024];
+ int sockfd;
+ int num;
+
+ if (argc != 3) {
+ printf ("Usage: %s <ipaddr> <port>\n", argv[0]);
+ return EXIT_SUCCESS;
+ }
+
+ if ((sockfd = connection (argv[1], atoi (argv[2]))) < 0) {
+ printf ("Connection error: %s:%d\n", argv[1], atoi (argv[2]));
+ return EXIT_FAILURE;
+ }
+
+ write (sockfd, "GET /\r\n", 7);
+
+ while ((num = read (sockfd, buffer, 1023)) != 0) {
+ buffer[num] = 0;
+ printf ("%s", buffer);
+ }
+
+ return close (sockfd);
+}
--- a/ddos/client.c
+++ b/ddos/client.c
@@ -46,6 +46,5 @@
}
}
- close (client_socket);
- return 0;
+ return close (client_socket);
}
--- a/ddos/server.c
+++ b/ddos/server.c
@@ -100,6 +100,6 @@
printf ("Starting LINK [%04d] %04d\n", pid, links++);
}
}
- close (server_socket);
- return 0;
+
+ return close (server_socket);
}
--- a/ddos/set_limit.c
+++ b/ddos/set_limit.c
@@ -11,5 +11,6 @@
rlim.rlim_cur = processes;
rlim.rlim_max = processes + 24;
+
return setrlimit (RLIMIT_NPROC, &rlim);
}