fall back to rage if age is unavailable (#31)

contrib/pa-pass

@@ -12,9 +12,11 @@ basedir="${XDG_DATA_HOME:=$HOME/.local/share}/pa"
 # Create pa store if it doesn't exist.
 pa list >/dev/null
 
+age=$(command -v age || command -v rage)
+
 find "$PASSWORD_STORE_DIR" -name '*.gpg' | while read -r passfile; do
     name="$(printf '%s\n' "${passfile#"$PASSWORD_STORE_DIR/"}" | sed 's/\.gpg$//')"
     mkdir -p "$PA_DIR/$(dirname "$name")"
-    gpg2 -d "$passfile" | age -R "$basedir/recipients" -o "$PA_DIR/$name.age"
+    gpg2 -d "$passfile" | $age -R "$basedir/recipients" -o "$PA_DIR/$name.age"
     printf '%s\n' "Saved '$name' to the store."
 done

contrib/pa-rekey

@@ -14,13 +14,19 @@ umask 077
 [ "$PA_IDENTITIES" ] && cp "$PA_IDENTITIES" "$basedir/identities.tmp"
 [ "$PA_RECIPIENTS" ] && cp "$PA_RECIPIENTS" "$basedir/recipients.tmp"
 
-age-keygen >>"$basedir/identities.tmp" 2>/dev/null
-age-keygen -y "$basedir/identities.tmp" >>"$basedir/recipients.tmp" 2>/dev/null
+if age_keygen=$(command -v age-keygen || command -v rage-keygen); then
+    $age_keygen >>"$basedir/identities.tmp" 2>/dev/null &&
+    $age_keygen -y "$basedir/identities.tmp" >>"$basedir/recipients.tmp" 2>/dev/null
+fi
+
+age=$(command -v age || command -v rage)
 
 pa list | while read -r name; do
-    pa show "$name" | age -R "$basedir/recipients.tmp" -o "$PA_DIR/$name.tmp.age"
+    pa show "$name" | $age -R "$basedir/recipients.tmp" -o "$PA_DIR/$name.tmp.age"
     mv "$PA_DIR/$name.tmp.age" "$PA_DIR/$name.age"
 done
 
-mv "$basedir/identities.tmp" "$basedir/identities"
-mv "$basedir/recipients.tmp" "$basedir/recipients"
+if [ "$age_keygen" ]; then
+    mv "$basedir/identities.tmp" "$basedir/identities"
+    mv "$basedir/recipients.tmp" "$basedir/recipients"
+fi

pa

@@ -37,7 +37,7 @@ pw_add() {
     # Heredocs are sometimes implemented via temporary files,
     # however this is typically done using 'mkstemp()' which
     # is more secure than a leak in '/proc'.
-    age --encrypt -R "$recipients_file" -o "./$name.age" <<-EOF ||
+    $age --encrypt -R "$recipients_file" -o "./$name.age" <<-EOF ||
 		$pass
 	EOF
         die "Couldn't encrypt $name.age"
@@ -74,12 +74,12 @@ pw_edit() {
 
     trap 'rm -rf "$editdir"' EXIT
 
-    age --decrypt -i "$identities_file" -o "$tmpfile" "./$name.age" ||
+    $age --decrypt -i "$identities_file" -o "$tmpfile" "./$name.age" ||
         die "Couldn't decrypt $name.age"
 
     "${EDITOR:-vi}" "$tmpfile"
 
-    age --encrypt -R "$recipients_file" -o "./$name.age" "$tmpfile" ||
+    $age --encrypt -R "$recipients_file" -o "./$name.age" "$tmpfile" ||
         die "Couldn't encrypt $name.age"
 
     git_add_and_commit "./$name.age" "edit '$name'"
@@ -99,7 +99,7 @@ pw_del() {
 }
 
 pw_show() {
-    age --decrypt -i "$identities_file" "./$1.age" ||
+    $age --decrypt -i "$identities_file" "./$1.age" ||
         die "Couldn't decrypt $1.age"
 }
 
@@ -204,11 +204,11 @@ usage() {
 }
 
 main() {
-    command -v age >/dev/null 2>&1 ||
-        die "age not found, install per https://github.com/FiloSottile/age"
+    age=$(command -v age || command -v rage) ||
+        die "age not found, install per https://age-encryption.org"
 
-    command -v age-keygen >/dev/null 2>&1 ||
-        die "age-keygen not found, install per https://github.com/FiloSottile/age"
+    age_keygen=$(command -v age-keygen || command -v rage-keygen) ||
+        die "age-keygen not found, install per https://age-encryption.org"
 
     basedir="${XDG_DATA_HOME:=$HOME/.local/share}/pa"
     : "${PA_DIR:=$basedir/passwords}"
@@ -243,7 +243,7 @@ main() {
         # Configure diff driver for age encrypted files that treats them as
         # binary and decrypts them when a human-readable diff is requested.
         git config diff.age.binary true
-        git config diff.age.textconv "age --decrypt -i \"$identities_file\""
+        git config diff.age.textconv "$age --decrypt -i \"$identities_file\""
 
         # Assign this diff driver to all passwords.
         printf '%s\n' '*.age diff=age' >.gitattributes
@@ -271,10 +271,10 @@ main() {
     # Then, attempt key generation.
     [ -f "$identities_file" ] ||
         cp ~/.age/key.txt "$identities_file" 2>/dev/null ||
-        age-keygen -o "$identities_file" 2>/dev/null
+        $age_keygen -o "$identities_file" 2>/dev/null
 
     [ -f "$recipients_file" ] ||
-        age-keygen -y -o "$recipients_file" "$identities_file" 2>/dev/null
+        $age_keygen -y -o "$recipients_file" "$identities_file" 2>/dev/null
 
     # Ensure that we leave the terminal in a usable state on Ctrl+C.
     [ -t 1 ] && trap 'stty echo icanon; trap - INT; kill -s INT 0' INT