[sup-devel] [PATCH v2] prefer gpg2 (GnuPG 2.x) over gpg (GnuPG 1.x)

[Sascha Silbe <sascha-pgp@silbe.org>]

Since 1.9.14 GnuPG can automatically start gpg-agent if it's not already
running (using a well-known socket location). When using GnuPG 1.x gpg-agent
needs to already be running at the time sup is started because the socket
location is random and passed via environment variables.

Autostarting gpg-agent is particularly convenient when using sup via ssh
as gpg-agent would need to be started manually (for local X sessions OTOH
it's often started automatically by distro scripts).

Signed-off-by: Sascha Silbe <sascha-pgp@silbe.org>
---
 lib/sup/crypto.rb |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

v1->v2:
  fallback to gpg if gpg2 is not available

diff --git a/lib/sup/crypto.rb b/lib/sup/crypto.rb
index 537745d..16ebaf9 100644
--- a/lib/sup/crypto.rb
+++ b/lib/sup/crypto.rb
@@ -25,9 +25,10 @@ EOS
   def initialize
     @mutex = Mutex.new

-    bin = `which gpg`.chomp
-    @cmd = case bin
-    when /\S/
+    @cmd = if (bin = `which gpg2`.chomp) =~ /\S/
+      debug "crypto: detected gpg binary in #{bin}"
+      "#{bin} --quiet --batch --no-verbose --logger-fd 1 --use-agent"
+    elsif (bin = `which gpg`.chomp) =~ /\S/
       debug "crypto: detected gpg binary in #{bin}"
       "#{bin} --quiet --batch --no-verbose --logger-fd 1 --use-agent"
     else
--
1.7.2.3

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