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Handle packet fragmentation in tunnel instead
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parent
f76b8e410b
commit
5c01e8d8e3
35
iodined.c
35
iodined.c
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@ -56,6 +56,7 @@ tunnel(int tun_fd, int dns_fd)
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{
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int i;
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int read;
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int code;
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fd_set fds;
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struct timeval tv;
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char in[64*1024];
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@ -105,21 +106,28 @@ tunnel(int tun_fd, int dns_fd)
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if(in[0] == 'H' || in[0] == 'h') {
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read = snprintf(out, sizeof(out), "%s-%d", "172.30.5.2", 1023);
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dnsd_queuepacket(out, read);
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} else if(in[0] == '0') {
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memcpy(packetbuf.data + packetbuf.offset, in, read);
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packetbuf.len += read;
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packetbuf.offset += read;
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} else if(in[0] == '1') {
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memcpy(packetbuf.data + packetbuf.offset, in, read);
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packetbuf.len += read;
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packetbuf.offset += read;
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} else if((in[0] >= '0' && in[0] <= '9')
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|| (in[0] >= 'a' && in[0] <= 'f')
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|| (in[0] >= 'A' && in[0] <= 'F')) {
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if ((in[0] >= '0' && in[0] <= '9'))
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code = in[0] - '0';
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if ((in[0] >= 'a' && in[0] <= 'f'))
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code = in[0] - 'a' + 10;
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if ((in[0] >= 'A' && in[0] <= 'F'))
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code = in[0] - 'A' + 10;
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outlen = sizeof(out);
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uncompress(out, &outlen, packetbuf.data, packetbuf.len);
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memcpy(packetbuf.data + packetbuf.offset, in + 1, read - 1);
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packetbuf.len += read - 1;
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packetbuf.offset += read - 1;
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write_tun(tun_fd, out, outlen);
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if (code & 1) {
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outlen = sizeof(out);
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uncompress(out, &outlen, packetbuf.data, packetbuf.len);
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packetbuf.len = packetbuf.offset = 0;
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write_tun(tun_fd, out, outlen);
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packetbuf.len = packetbuf.offset = 0;
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}
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}
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}
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}
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@ -175,6 +183,9 @@ main(int argc, char **argv)
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foreground = 0;
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mtu = 1024;
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packetbuf.len = 0;
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packetbuf.offset = 0;
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while ((choice = getopt(argc, argv, "vfhu:t:m:")) != -1) {
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switch(choice) {
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case 'v':
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