Support depth instead of multiple keys in get-signers

1 files changed, 11 insertions, 5 deletions

diff --git a/get-signers b/get-signers
index 98d5082..d383f41 100755
--- a/get-signers
+++ b/get-signers
@@ -1,11 +1,17 @@
 #!/bin/sh
 
 if [ "$#" -eq 0 ]; then
-  echo >&2 "Usage: $0 <keyid> [<keyid> ..]"
+  echo >&2 "Usage: $0 <keyid> [ <depth> ]"
   exit 1
 fi
 
-gpg --with-colons --fast-list-mode --list-sigs "$@" |
-	awk -F ':' '$1 ~ /sig|rev/ {print $5}' |
-	sort -u |
-	xargs gpg --recv-keys
+keys="$1"
+depth="${2:-1}"
+
+while [ "$depth" -gt 0 ]; do
+
+  keys=$(gpg --with-colons --fast-list-mode --list-sigs $keys | awk -F ':' '$1 ~ /sig|rev/ {print $5}' | sort -u)
+  gpg --recv-keys $keys
+
+  depth=$((depth - 1))
+done