mirror of
https://github.com/nmap/nmap.git
synced 2025-12-20 14:39:02 +00:00
Proper error reporting during socket creation and initialization.
This commit is contained in:
@@ -70,6 +70,8 @@
|
||||
* not have an effect. This function needs to be called before you try to read
|
||||
* or write on the iod. */
|
||||
static int nsock_make_socket(mspool *ms, msiod *iod, int family, int type, int proto) {
|
||||
int rc;
|
||||
|
||||
/* inheritable_socket is from nbase */
|
||||
iod->sd = (int)inheritable_socket(family, type, proto);
|
||||
if (iod->sd == -1) {
|
||||
@@ -84,9 +86,15 @@ static int nsock_make_socket(mspool *ms, msiod *iod, int family, int type, int p
|
||||
if (iod->locallen) {
|
||||
int one = 1;
|
||||
|
||||
setsockopt(iod->sd, SOL_SOCKET, SO_REUSEADDR, (const char *)&one, sizeof(one));
|
||||
if (bind(iod->sd, (struct sockaddr *)&iod->local, (int) iod->locallen) == -1) {
|
||||
rc = setsockopt(iod->sd, SOL_SOCKET, SO_REUSEADDR, (const char *)&one, sizeof(one));
|
||||
if (rc == -1)
|
||||
nsock_log_error(ms, "Setting of SO_REUSEADDR failed (#%d): %s", iod->id,
|
||||
strerror(errno));
|
||||
|
||||
rc = bind(iod->sd, (struct sockaddr *)&iod->local, (int) iod->locallen);
|
||||
if (rc == -1) {
|
||||
const char *addrstr = NULL;
|
||||
|
||||
#if HAVE_SYS_UN_H
|
||||
if (iod->local.ss_family == AF_UNIX)
|
||||
addrstr = get_unixsock_path(&iod->local);
|
||||
@@ -94,26 +102,34 @@ static int nsock_make_socket(mspool *ms, msiod *iod, int family, int type, int p
|
||||
#endif
|
||||
addrstr = inet_ntop_ez(&iod->local, iod->locallen);
|
||||
|
||||
nsock_log_error(ms, "Bind to %s failed (IOD #%li)", addrstr, iod->id);
|
||||
nsock_log_error(ms, "Bind to %s failed (IOD #%li): %s", addrstr, iod->id,
|
||||
strerror(errno));
|
||||
}
|
||||
}
|
||||
if (iod->ipoptslen && family == AF_INET) {
|
||||
if (setsockopt(iod->sd, IPPROTO_IP, IP_OPTIONS, (const char *)iod->ipopts, iod->ipoptslen) == -1)
|
||||
nsock_log_error(ms, "Setting of IP options failed (IOD #%li)", iod->id);
|
||||
rc = setsockopt(iod->sd, IPPROTO_IP, IP_OPTIONS, (const char *)iod->ipopts,
|
||||
iod->ipoptslen);
|
||||
if (rc == -1)
|
||||
nsock_log_error(ms, "Setting of IP options failed (IOD #%li): %s", iod->id,
|
||||
strerror(errno));
|
||||
}
|
||||
if (ms->device) {
|
||||
errno = 0;
|
||||
if (!socket_bindtodevice(iod->sd, ms->device)) {
|
||||
if (errno != EPERM)
|
||||
nsock_log_error(ms, "Setting of SO_BINDTODEVICE failed (IOD #%li)", iod->id);
|
||||
nsock_log_error(ms, "Setting of SO_BINDTODEVICE failed (IOD #%li): %s",
|
||||
iod->id, strerror(errno));
|
||||
else
|
||||
nsock_log_debug_all(ms, "Setting of SO_BINDTODEVICE failed (IOD #%li)", iod->id);
|
||||
nsock_log_debug_all(ms, "Setting of SO_BINDTODEVICE failed (IOD #%li): %s",
|
||||
iod->id, strerror(errno));
|
||||
}
|
||||
}
|
||||
if (ms->broadcast) {
|
||||
if (setsockopt(iod->sd, SOL_SOCKET, SO_BROADCAST, (const char *)&(ms->broadcast), sizeof(int)) == -1) {
|
||||
nsock_log_error(ms, "Setting of SO_BROADCAST failed (IOD #%li)", iod->id);
|
||||
}
|
||||
rc = setsockopt(iod->sd, SOL_SOCKET, SO_BROADCAST,
|
||||
(const char *)&(ms->broadcast), sizeof(int));
|
||||
if (rc == -1)
|
||||
nsock_log_error(ms, "Setting of SO_BROADCAST failed (IOD #%li): %s",
|
||||
iod->id, strerror(errno));
|
||||
}
|
||||
return iod->sd;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user