forked from lix-project/lix
Add escape for systemd service in installer script
Among all the characters that are allowed in a URL, both the percentage sign "%" and the single quotation mark "'" needs escaping when written as a environment variable in a systemd service file. While the single quotation mark may be rare, the percentage sign is widely used to escape characters in a URL. This is especially common in proxy setting, where username and password may contain special characters that need percentage escaping. This patch applies the following replacements: % -> %% ' -> \'
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@ -24,12 +24,17 @@ $1
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EOF
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}
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escape_systemd_env() {
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temp_var="${1//\'/\\\'}"
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echo "${temp_var//\%/%%}"
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}
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# Gather all non-empty proxy environment variables into a string
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create_systemd_proxy_env() {
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vars="http_proxy https_proxy ftp_proxy no_proxy HTTP_PROXY HTTPS_PROXY FTP_PROXY NO_PROXY"
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for v in $vars; do
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if [ "x${!v:-}" != "x" ]; then
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echo "Environment=${v}=${!v}"
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echo "Environment=${v}=$(escape_systemd_env ${!v})"
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fi
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done
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}
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