From 328ca19ad666d6d858c70d5758ed72bc0a9feaa7 Mon Sep 17 00:00:00 2001
From: Dylan Araps <dylan.araps@gmail.com>
Date: Sat, 30 Nov 2019 10:19:32 +0000
Subject: [PATCH] pash: clear clipboard after a timer

---
 README.md | 24 +++++++++++++++++++-----
 pash      | 23 +++++++++++++++++------
 2 files changed, 36 insertions(+), 11 deletions(-)

diff --git a/README.md b/README.md
index 216ac9b..28593b9 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ pash
     * [How do I set the password length?](#how-do-i-set-the-password-length)
     * [How do I change the password store location?](#how-do-i-change-the-password-store-location)
     * [How do I change the clipboard tool?](#how-do-i-change-the-clipboard-tool)
+    * [How do I change the clipboard timeout?](#how-do-i-change-the-clipboard-timeout)
     * [How do I change the password generation pattern?](#how-do-i-change-the-password-generation-pattern)
     * [How do I rename an entry?](#how-do-i-rename-an-entry)
     * [How can I migrate from `pass` to `pash`?](#how-can-i-migrate-from-pass-to-pash)
@@ -61,11 +62,12 @@ COMMANDS
 
 OPTIONS
 
-Using a key pair: export PASH_KEYID=XXXXXXXX
-Password length:  export PASH_LENGTH=50
-Password pattern: export PASH_PATTERN=_A-Z-a-z-0-9
-Store location:   export PASH_DIR=~/.local/share/pash
-Clipboard tool:   export PASH_CLIP='xclip -selection clipboard'
+Using a key pair:  export PASH_KEYID=XXXXXXXX
+Password length:   export PASH_LENGTH=50
+Password pattern:  export PASH_PATTERN=_A-Z-a-z-0-9
+Store location:    export PASH_DIR=~/.local/share/pash
+Clipboard tool:    export PASH_CLIP='xclip -selection clipboard'
+Clipboard timeout: export PASH_TIMEOUT=10
 ```
 
 ## FAQ
@@ -136,6 +138,18 @@ export PASH_CLIP='xclip -selection clipboard'
 PASH_CLIP='xclip -selection clipboard' pash copy github
 ```
 
+### How do I change the clipboard timeout?
+
+Set the environment variable `PASH_TIMEOUT` to a command.
+
+```sh
+# Default: '10'
+export PASH_TIMEOUT=10
+
+# This can also be used as a one-off.
+PASH_TIMEOUT=5 pash copy github
+```
+
 ### How do I change the password generation pattern?
 
 Set the environment variable `PASH_PATTERN` to a valid `tr` string.
diff --git a/pash b/pash
index 0cad611..a5bcd4f 100755
--- a/pash
+++ b/pash
@@ -58,7 +58,17 @@ pw_copy() {
     # Disable warning against word-splitting as it is safe
     # and intentional (globbing is disabled).
     # shellcheck disable=2086
-    pw_show "$1" | ${PASH_CLIP:-xclip -selection clipboard}
+    : "${PASH_CLIP:=xclip -selection clipboard}"
+
+    # Wait in the background for the password timeout and
+    # clear the clipboard when the timer runs out.
+    (
+        printf 'Clearing clipboard in %d seconds.\n' "${PASH_TIMEOUT:=10}"
+        sleep "$PASH_TIMEOUT"
+        printf '' | $PASH_CLIP
+    ) &
+
+    pw_show "$1" | $PASH_CLIP
 }
 
 pw_list() {
@@ -119,11 +129,12 @@ pash 2.1.0 - simple password manager.
 => [l]ist        - List all entries.
 => [s]how [name] - Show password for an entry.
 
-Using a key pair: export PASH_KEYID=XXXXXXXX
-Password length:  export PASH_LENGTH=50
-Password pattern: export PASH_PATTERN=_A-Z-a-z-0-9
-Store location:   export PASH_DIR=~/.local/share/pash
-Clipboard tool:   export PASH_CLIP='xclip -selection clipboard'
+Using a key pair:  export PASH_KEYID=XXXXXXXX
+Password length:   export PASH_LENGTH=50
+Password pattern:  export PASH_PATTERN=_A-Z-a-z-0-9
+Store location:    export PASH_DIR=~/.local/share/pash
+Clipboard tool:    export PASH_CLIP='xclip -selection clipboard'
+Clipboard timeout: export PASH_TIMEOUT=10
 "
 exit 1
 }