Changeset 246

Timestamp:

Jul 15, 2011, 4:36:44 PM (13 years ago)

Author:

jazz

Message:

• icas_send : read blacklist to send UDP packets.
• icas_recv : receive UDP packets and print messages.

Location:

icas_send

Files:

• Makefile (modified) (1 diff)
• blacklist (added)
• icas_recv.c (modified) (2 diffs)
• icas_send.c (modified) (2 diffs)

icas_send/Makefile

@@ -1 +1 @@
 all:
-  gcc icas_send.c -o icas_send
-  gcc icas_recv.c -o icas_recv
+  gcc icas_send.c -o icas_send -static
+  gcc icas_recv.c -o icas_recv -static
+  strip icas_send
+  strip icas_recv
 clean:
   rm icas_send icas_recv

icas_send/icas_recv.c

@@ -22 +22 @@
     int    recv_length = sizeof(recv_sockopt);
     int    received;
-    char   BLACK_LIST[256];
+    char   BLACK_LIST[1024];
 
     if (argc <= 1)
@@ -52 +52 @@
     fprintf(stderr,"Finished binding port #%s for icas_recv socket.\n",argv[1]);
 
-    if ((received = recvfrom(recv_sock, BLACK_LIST, sizeof(BLACK_LIST), 0, (struct sockaddr *) &recv_sockopt, (socklen_t *) &recv_length)) < 0)
+    while(1)
     {
-  Die("Failed to receive message");
+  if ((received = recvfrom(recv_sock, BLACK_LIST, sizeof(BLACK_LIST), 0, 
+                     (struct sockaddr *) &recv_sockopt, 
+                     (socklen_t *) &recv_length)) < 0)
+  {
+      Die("Failed to receive message");
+  }
+  fprintf(stderr,"Received: %s\n", BLACK_LIST);
     }
-    fprintf(stderr,"Received: %s\n", BLACK_LIST);
 
     close(recv_sock);

icas_send/icas_send.c

@@ -18 +18 @@
 int main(int argc, char *argv[])
 {
-    struct sockaddr_in send_sockopt;
-    int    send_sock;
-    int    send_length = sizeof(send_sockopt);
-    char   BLACK_LIST[256];
+    struct  sockaddr_in send_sockopt;
+    int     send_sock;
+    int     send_length = sizeof(send_sockopt);
+    FILE    *fd;
+    char    BLACK_LIST[1024];
+    size_t  len = 0;
+    ssize_t read;
 
     if (argc <= 2)
     {
   fprintf(stderr, "USAGE: %s <RECV_IP> <RECV_PORT>\n", argv[0]);
+  exit(1);
+    }
+
+    /* open blacklist to read black list data */
+    fd = fopen("blacklist","r");
+    if (fd == NULL)
+    {
+      fprintf(stderr, "%s: Couldn't open file %s; %s\n", argv[0], "blacklist", strerror (errno));
   exit(1);
     }
@@ -45 +56 @@
     send_sockopt.sin_port = htons(atoi(argv[2]));        /* server port */
 
-    if (sendto(send_sock, BLACK_LIST, sizeof(BLACK_LIST), 0, 
-         (struct sockaddr *) &send_sockopt, 
-         sizeof(send_sockopt)) != sizeof(BLACK_LIST)) {
-  Die("1: Mismatch in number of sent bytes");
+    while(fgets(BLACK_LIST,sizeof(BLACK_LIST),fd))
+    {
+  if (sendto(send_sock, BLACK_LIST, sizeof(BLACK_LIST), 0, 
+       (struct sockaddr *) &send_sockopt, 
+       sizeof(send_sockopt)) != sizeof(BLACK_LIST)) 
+  {
+      Die("1: Mismatch in number of sent bytes");
+  }
     }