PenTest/nmap
1
0
Fork 0
mirror of https://github.com/nmap/nmap.git synced 2025-12-06 04:31:29 +00:00
Code Issues Projects Releases Wiki Activity

Inline broadcast_socket(), only used in one place.

Browse Source 
Also remove the check for the special socket value 501, which is a
vestige of a workaround leftover from when raw sockets mostly worked on
Windows. That code was removed in r2812 back in 2005.
This commit is contained in:
dmiller
2020-01-14 05:38:29 +00:00
parent b03c96c326
commit d0dc55fc90
2 changed files with 5 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
tcpip.cc
View File

@@ -163,11 +163,15 @@ static PacketCounter PktCt;
AF_INET6, depending on the operating system. */
int nmap_raw_socket() {
int rawsd;
int one = 1;
rawsd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
if (rawsd < 0)
return rawsd;
broadcast_socket(rawsd);
if (setsockopt (rawsd, SOL_SOCKET, SO_BROADCAST, (const char *) &one, sizeof(int)) != 0) {
error("Failed to secure socket broadcasting permission");
perror("setsockopt");
}
#ifndef WIN32
sethdrinclude(rawsd);
#endif
@@ -1804,19 +1808,6 @@ void max_rcvbuf(int sd) {
}
/* Give broadcast permission to a socket */
void broadcast_socket(int sd) {
int one = 1;
#ifdef WIN32
if (sd == 501)
return;
#endif
if (setsockopt (sd, SOL_SOCKET, SO_BROADCAST, (const char *) &one, sizeof(int)) != 0) {
error("Failed to secure socket broadcasting permission");
perror("setsockopt");
}
}
/* Do a receive (recv()) on a socket and stick the results (up to
len) into buf . Give up after 'seconds'. Returns the number of
bytes read (or -1 in the case of an error. It only does one recv

3
tcpip.h
View File

@@ -453,9 +453,6 @@ int gettcpopt_ts(struct tcp_hdr *tcp, u32 *timestamp, u32 *echots);
/* Maximize the receive buffer of a socket descriptor (up to 500K) */
void max_rcvbuf(int sd);
/* Give broadcast permission to a socket */
void broadcast_socket(int sd);
/* Do a receive (recv()) on a socket and stick the results (upt to
len) into buf . Give up after 'seconds'. Returns the number of
bytes read (or -1 in the case of an error. It only does one recv