ead: allow the client to override the source ip of the server, so that it can work...

[openwrt/svn-archive/archive.git] / package / ead / src / ead-client.c

diff --git a/package/ead/src/ead-client.c b/package/ead/src/ead-client.c
index 14e04c40ba94e36af134be57b715fd1e1438f123..2592c8f15ef278deb65b5917bd874d1481618910 100644 (file)
--- a/package/ead/src/ead-client.c
+++ b/package/ead/src/ead-client.c
@@ -16,6 +16,7 @@
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <netinet/in.h>
+#include <arpa/inet.h>
 #include <stdio.h>
 #include <stddef.h>
 #include <stdint.h>
@@ -43,6 +44,9 @@ static uint16_t nid = 0xffff;
 struct sockaddr_in local, remote;
 static int s = 0;
 static int sockflags;
+static struct in_addr serverip = {
+       .s_addr = 0x01010101 /* dummy */
+};
 
 static unsigned char *skey = NULL;
 static unsigned char bbuf[MAXPARAMLEN];
@@ -79,6 +83,7 @@ send_packet(int type, bool (*handler)(void), unsigned int max)
        int res = 0;
 
        type = htonl(type);
+       memcpy(&msg->ip, &serverip.s_addr, sizeof(msg->ip));
        set_nonblock(0);
        sendto(s, msgbuf, sizeof(struct ead_msg) + ntohl(msg->len), 0, (struct sockaddr *) &remote, sizeof(remote));
        set_nonblock(1);
@@ -293,12 +298,14 @@ send_command(const char *command)
 static int
 usage(const char *prog)
 {
-       fprintf(stderr, "Usage: %s <node> <username>[:<password>]\n"
+       fprintf(stderr, "Usage: %s [-s <addr>] [-b <addr>] <node> <username>[:<password>] <command>\n"
                "\n"
-               "\n<node>:     Node ID (4 digits hex)\n"
-               "\n<username>: Username to authenticate with\n"
+               "\t-s <addr>:  Set the server's source address to <addr>\n"
+               "\t-b <addr>:  Set the broadcast address to <addr>\n"
+               "\t<node>:     Node ID (4 digits hex)\n"
+               "\t<username>: Username to authenticate with\n"
                "\n"
-               "\nPassing no arguments shows a list of active nodes on the network\n"
+               "\tPassing no arguments shows a list of active nodes on the network\n"
                "\n", prog);
        return -1;
 }
@@ -309,6 +316,8 @@ int main(int argc, char **argv)
        int val = 1;
        char *st = NULL;
        const char *command = NULL;
+       const char *prog = argv[0];
+       int ch;
 
        msg->magic = htonl(EAD_MAGIC);
        msg->tid = 0;
@@ -324,12 +333,27 @@ int main(int argc, char **argv)
        local.sin_addr.s_addr = INADDR_ANY;
        local.sin_port = 0;
 
+       while ((ch = getopt(argc, argv, "b:s:h")) != -1) {
+               switch(ch) {
+               case 's':
+                       inet_aton(optarg, &serverip);
+                       break;
+               case 'b':
+                       inet_aton(optarg, &remote.sin_addr);
+                       break;
+               case 'h':
+                       return usage(prog);
+               }
+       }
+       argv += optind;
+       argc -= optind;
+
        switch(argc) {
-       case 4:
-               command = argv[3];
-               /* fall through */
        case 3:
-               username = argv[2];
+               command = argv[2];
+               /* fall through */
+       case 2:
+               username = argv[1];
                st = strchr(username, ':');
                if (st) {
                        *st = 0;
@@ -340,15 +364,15 @@ int main(int argc, char **argv)
                        memset(st, 0, strlen(st));
                }
                /* fall through */
-       case 2:
-               nid = strtoul(argv[1], &st, 16);
+       case 1:
+               nid = strtoul(argv[0], &st, 16);
                if (st && st[0] != 0)
-                       return usage(argv[0]);
+                       return usage(prog);
                /* fall through */
-       case 1:
+       case 0:
                break;
        default:
-               return usage(argv[0]);
+               return usage(prog);
        }
 
        msg->nid = htons(nid);