From df7b390514efa0ae6b84e8404806dee63d3524ad Mon Sep 17 00:00:00 2001
From: Dave Reisner <d@falconindy.com>
Date: Fri, 8 Jul 2011 22:40:25 -0400
Subject: pacman-key: refactor get_from
This function had a variety of pitfalls, including the inability to
successfully find a key=value pair where no whitespace surrounded the
equals sign. Make it more robust by splitting the line on the equals
itself, and performing whitespace trimming on the resulting key/value
pair.
Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>
---
scripts/pacman-key.sh.in | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/scripts/pacman-key.sh.in b/scripts/pacman-key.sh.in
index 937dcad5..0ce0ea24 100644
--- a/scripts/pacman-key.sh.in
+++ b/scripts/pacman-key.sh.in
@@ -76,17 +76,19 @@ This is free software; see the source for copying conditions.\n\
There is NO WARRANTY, to the extent permitted by law.\n")"
}
-# Read provided file and search for values matching the given key
-# The contents of the file are expected to be in this format: key = value
-# 'key', 'equal sign' and 'value' can be surrounded by random whitespace
-# Usage: get_from "$file" "$key" # returns the value for the first matching key in the file
+# read the config file "$1" which has key=value pairs, and return the key which
+# matches "$2". the equals sign between pairs may be surrounded by any amount
+# of whitespace.
get_from() {
- while read key _ value; do
- if [[ $key = $2 ]]; then
- echo "$value"
- break
+ while IFS='=' read -r key value; do
+ [[ -z $key || ${key:0:1} = '#' ]] && continue
+
+ if [[ ${key%% *} = "$2" && -n ${value##* } ]]; then
+ echo "${value##* }"
+ return 0
fi
done < "$1"
+ return 1
}
verify_keyring_input() {
--
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