PenTest/nmap
1
0
Fork 0
mirror of https://github.com/nmap/nmap.git synced 2026-01-18 12:19:02 +00:00
Code Issues Projects Releases Wiki Activity

Changed send_frag_ip_packet() to make sure it accepts big MTU values, and fixed the format specifier, which was printing a signed integer when it should print an unsigned one

Browse Source
This commit is contained in:
luis
2010-06-22 18:22:54 +00:00
parent eae5577f2c
commit d11edeb3e7
2 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
libnetutil/netutil.cc
View File

@@ -3188,10 +3188,10 @@ int send_ip_packet_eth_or_sd(int sd, struct eth_nfo *eth, u8 *packet, unsigned i
* which gives us a right to cut TCP header after 8th byte
* (shouldn't we inflate the header to 60 bytes too?) */
int send_frag_ip_packet(int sd, struct eth_nfo *eth, u8 *packet,
unsigned int packetlen, unsigned int mtu) {
unsigned int packetlen, u32 mtu) {
struct ip *ip = (struct ip *) packet;
int headerlen = ip->ip_hl * 4; // better than sizeof(struct ip)
unsigned int datalen = packetlen - headerlen;
u32 datalen = packetlen - headerlen;
int fdatalen = 0, res = 0;
int fragment=0;
@@ -3200,7 +3200,7 @@ int send_frag_ip_packet(int sd, struct eth_nfo *eth, u8 *packet,
assert(mtu > 0 && mtu % 8 == 0); // otherwise, we couldn't set Fragment offset (ip->ip_off) correctly
if (datalen <= mtu) {
netutil_error("Warning: fragmentation (mtu=%i) requested but the payload is too small already (%i)", mtu, datalen);
netutil_error("Warning: fragmentation (mtu=%lu) requested but the payload is too small already (%lu)", (unsigned long)mtu, (unsigned long)datalen);
return send_ip_packet_eth_or_sd(sd, eth, packet, packetlen);
}