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wg: give "off" value for fwmark

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2017-02-22 21:45:03 +01:00
parent a9bcd0d401
commit d4edc7baa8
4 changed files with 19 additions and 5 deletions
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6
src/config.c
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@ -97,6 +97,12 @@ static inline bool parse_fwmark(uint32_t *fwmark, unsigned int *flags, const cha
char *end;
int base = 10;
if (!strcasecmp(value, "off")) {
*fwmark = 0;
*flags |= WGDEVICE_REMOVE_FWMARK;
return true;
}
if (value[0] == '0' && value[1] == 'x') {
value += 2;
base = 16;

5
src/show.c
View file

@ -276,7 +276,10 @@ static bool ugly_print(struct wgdevice *device, const char *param, bool with_int
} else if (!strcmp(param, "fwmark")) {
if (with_interface)
printf("%s\t", device->interface);
printf("0x%x\n", device->fwmark);
if (device->fwmark)
printf("0x%x\n", device->fwmark);
else
printf("off\n");
} else if (!strcmp(param, "endpoints")) {
if (with_interface)
printf("%s\t", device->interface);

4
src/wg-quick.bash
View file

@ -79,7 +79,9 @@ add_if() {
}
del_if() {
DEFAULT_TABLE=$(( $(wg show "$INTERFACE" fwmark) ))
local fwmark="$(wg show "$INTERFACE" fwmark)"
DEFAULT_TABLE=0
[[ $fwmark != off ]] && DEFAULT_TABLE=$(( $fwmark ))
if [[ $DEFAULT_TABLE -ne 0 ]]; then
while [[ -n $(ip -4 rule show table $DEFAULT_TABLE) ]]; do
cmd ip -4 rule delete table $DEFAULT_TABLE

9
src/wg.8
View file

@ -67,14 +67,16 @@ it adds an additional layer of symmetric-key cryptography to be mixed into
the already existing public-key cryptography, for post-quantum resistance.
If \fIallowed-ips\fP is specified, but the value is the empty string, all
allowed ips are removed from the peer. The use of \fIpersistent-keepalive\fP
is optional and is by default off; setting it to 0 or "off", disables it.
is optional and is by default off; setting it to 0 or "off" disables it.
Otherwise it represents, in seconds, between 1 and 65535 inclusive, how often
to send an authenticated empty packet to the peer, for the purpose of keeping
a stateful firewall or NAT mapping valid persistently. For example, if the
interface very rarely sends traffic, but it might at anytime receive traffic
from a peer, and it is behind NAT, the interface might benefit from having a
persistent keepalive interval of 25 seconds; however, most users will not need
this.
this. The use of \fIfwmark\fP is optional and is by default off; setting it to
0 or "off" disables it. Otherwise it is a 32-bit fwmark for outgoing packets
and may be specified in hexadecimal by prepending "0x".
.TP
\fBsetconf\fP \fI<interface>\fP \fI<configuration-filename>\fP
Sets the current configuration of \fI<interface>\fP to the contents of
@ -126,7 +128,8 @@ for post-quantum resistance.
ListenPort \(em a 16-bit port for listening. Optional; if not specified, chosen
randomly.
.IP \(bu
FwMark \(em a 32-bit fwmark for outgoing packets. Optional.
FwMark \(em a 32-bit fwmark for outgoing packets. If set to 0 or "off", this
option is disabled. May be specified in hexadecimal by prepending "0x". Optional.
.P
The \fIPeer\fP sections may contain the following fields:
.IP \(bu