Changeset 3eef14

Timestamp:

06/11/09 22:23:05 (3 years ago)

Author:

Erik Ekman <yarrick@…>

Branches:

master

Children:

950c08

Parents:

27fc03

git-author:

Erik Ekman <yarrick@…> (06/11/09 22:23:05)

git-committer:

Erik Ekman <erik@…> (02/04/12 20:34:02)

Message:

#36 fetch remote ip number after login

File:

• src/iodine.c (modified) (3 diffs)

src/iodine.c

@@ -472 +472 @@
 
         send_packet(fd, 'V', data, sizeof(data));
+}
+
+static void
+send_ip_request(int fd, int userid)
+{
+        char buf[512] = "I_.";
+        buf[1] = b32_5to8(userid);
+        
+        strncat(buf, topdomain, 512 - strlen(buf));
+        send_query(fd, buf);
 }
 
@@ -621 +631 @@
         warnx("couldn't login to server");
         return 1;
+}
+
+static int
+handshake_raw_udp(int dns_fd)
+{
+        struct timeval tv;
+        char in[4096];
+        fd_set fds;
+        int i;
+        int r;
+        int read;
+        unsigned remoteaddr = 0;
+        struct in_addr server;
+
+        fprintf(stderr, "Testing raw UDP data to the server");
+        fflush(stderr);
+        for (i=0; running && i<3 ;i++) {
+                tv.tv_sec = i + 1;
+                tv.tv_usec = 0;
+
+                send_ip_request(dns_fd, userid);
+                
+                FD_ZERO(&fds);
+                FD_SET(dns_fd, &fds);
+
+                r = select(dns_fd + 1, &fds, NULL, NULL, &tv);
+
+                if(r > 0) {
+                        read = read_dns(dns_fd, in, sizeof(in));
+                        if (read == 5 && in[0] == 'I') {
+                                /* Received IP address */
+                                remoteaddr = (in[1] & 0xff);
+                                remoteaddr <<= 8;
+                                remoteaddr |= (in[2] & 0xff);
+                                remoteaddr <<= 8;
+                                remoteaddr |= (in[3] & 0xff);
+                                remoteaddr <<= 8;
+                                remoteaddr |= (in[4] & 0xff);
+                                server.s_addr = ntohl(remoteaddr);
+                                break;
+                        }
+                } else {
+                        fprintf(stderr, ".");
+                        fflush(stderr);
+                }
+        }
+        
+        if (!remoteaddr) {
+                fprintf(stderr, " failed to get IP.\n");
+                return 1;
+        }
+        fprintf(stderr, " at %s", inet_ntoa(server));
+        fflush(stderr);
+
+        /* TODO do login against port 53 on remote server 
+         *      based on the old seed. If reply received,
+         *      switch to raw udp mode */
+        fprintf(stderr, ": not implemented\n");
+        return 1;
+        /* TODO and then return 0 on success */
 }
 
@@ -871 +941 @@
                 return r;
         }
+
+        handshake_raw_udp(dns_fd);
 
         handshake_case_check(dns_fd);