From 41d7bc1e8955d047488678826c8b3cc50ae3d795 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Sun, 10 Oct 2021 08:01:05 -0400
Subject: trivial cleanups

renamed several functions

removed unused code
---
 cryptonomic-vpn | 57 ++++++++++++++++-----------------------------------------
 1 file changed, 16 insertions(+), 41 deletions(-)

diff --git a/cryptonomic-vpn b/cryptonomic-vpn
index 8bc726c..196e2d1 100755
--- a/cryptonomic-vpn
+++ b/cryptonomic-vpn
@@ -151,8 +151,8 @@ main()
         exec 2>&1
         # Start with the remote public key, to fail early if the server is
         # unavailable.
-        install_remote_public_key
-        install_local_private_key
+        install_remote_public_rsa_key
+        install_local_private_rsa_key
         test_new_config
     else
         die unimplemented
@@ -160,27 +160,7 @@ main()
     exit
 }
 
-match_and_drop_first_word()
-{
-    expect=$1
-    while read word rest
-    do
-        if [ "$word" = "$expect" ]
-        then
-            printf '%s\n' "$rest"
-            return
-        fi
-    done
-    false
-}
-
-keyscan()
-{
-    semi_quietly ssh-keyscan -t "${REMOTE_KEY_TYPE}" "$1"
-}
-
-# Only write to the destination if the command is successful.
-write_successfully()
+write_if_successful()
 {
     local out="$1" f
     [ "$2" = -- ] || return
@@ -214,7 +194,7 @@ simulate_write()
     )
 }
 
-semi_quietly()
+quiet_if_successful()
 {
     local t=$(mktemp)
     if "$@" 2>"$t"
@@ -225,25 +205,20 @@ semi_quietly()
     fi
 }
 
-openssl()
-{
-    semi_quietly command openssl "$@"
-}
-
-write_public_key()
+write_public_rsa_key()
 {
-    openssl rsa -in "$1" -outform DER -pubout
+    quiet_if_successful openssl rsa -in "$1" -outform DER -pubout
 }
 
-write_private_key()
+write_private_rsa_key()
 {
-    openssl rsa -in "$1" -outform DER
+    quiet_if_successful openssl rsa -in "$1" -outform DER
 }
 
-write_remote_key()
+write_remote_rsa_key()
 {
     case "$REMOTE_KEY_TYPE" in
-        rsa) ssh-keygen -e -f "$1" -m PEM | openssl rsa -RSAPublicKey_in -outform DER ;;
+        rsa) ssh-keygen -e -f "$1" -m PEM | quiet_if_successful openssl rsa -RSAPublicKey_in -outform DER ;;
         *) echo "Unsupported key type." >&2; exit 1 ;;
     esac
 }
@@ -255,15 +230,15 @@ sshfp_rsa_filename_string()
 }
 
 
-install_local_private_key()
+install_local_private_rsa_key()
 {
     private_key_tmp=$(mktemp) || return
     cp "$LOCAL_KEY" "$private_key_tmp"
     ssh-keygen -N '' -p -m PEM -f "$private_key_tmp" >/dev/null 2>&1
     trap 'rm -f "$private_key_tmp"' EXIT
 
-    write_successfully "$LOCAL_PRIVATE_KEY_DEST" -- write_private_key "$private_key_tmp"
-    write_successfully "$LOCAL_PUBLIC_KEY_DEST"  -- write_public_key  "$private_key_tmp"
+    write_if_successful "$LOCAL_PRIVATE_KEY_DEST" -- write_private_rsa_key "$private_key_tmp"
+    write_if_successful "$LOCAL_PUBLIC_KEY_DEST"  -- write_public_rsa_key  "$private_key_tmp"
 
     trap - EXIT
     rm -f "$private_key_tmp"
@@ -299,7 +274,7 @@ find_known_ssh_host_rsa_key_by_name()
     )
 }
 
-install_remote_public_key()
+install_remote_public_rsa_key()
 {
     trap 'rm -f "$t"' EXIT
     t=$(mktemp)
@@ -314,7 +289,7 @@ install_remote_public_key()
     fi
 
     REMOTE_PUBLIC_KEY_DEST=/etc/swanctl/pubkey/$(sshfp_rsa_filename_string "$t").pub
-    write_successfully "$REMOTE_PUBLIC_KEY_DEST" -- write_remote_key "$t"
+    write_if_successful "$REMOTE_PUBLIC_KEY_DEST" -- write_remote_rsa_key "$t"
 
     trap - EXIT
     rm -f "$t"
@@ -373,7 +348,7 @@ NO_ACT()
 
 install_stronswan_config()
 {
-    write_successfully /etc/swanctl/conf.d/"$REMOTE_NAME".conf -- \
+    write_if_successful /etc/swanctl/conf.d/"$REMOTE_NAME".conf -- \
                        strongswan_config \
                                 "$REMOTE_NAME" \
                                 "$REMOTE_IP" \
-- 
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