wg-quick: freebsd: avoid writing private keys to /tmp

FreeBSD's bash doesn't handle <(...) safely, creating a temporary file
instead of using /proc/self/fd/N like on Linux. Work around this by
using a simple pipeline with /dev/stdin.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/src/wg-quick/freebsd.bash b/src/wg-quick/freebsd.bash
index c6744d334a013213956c73377beadbeabba8f7f6..88aa2b406d2a1714cc374ddc20abe6d2ea414884 100755 (executable)
--- a/src/wg-quick/freebsd.bash
+++ b/src/wg-quick/freebsd.bash
@@ -349,7 +349,7 @@ add_route() {
 }
 
 set_config() {
-       cmd wg setconf "$INTERFACE" <(echo "$WG_CONFIG")
+       echo "$WG_CONFIG" | cmd wg setconf "$INTERFACE" /dev/stdin
 }
 
 save_config() {