mirror of
https://github.com/plantroon/acme.sh.git
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Merge pull request #3330 from medmunds/feature/notify-smtp
Implement smtp notify hook
This commit is contained in:
neil
GitHub
commit
06d1a98ad2
7
acme.sh
7
acme.sh
@ -2283,6 +2283,13 @@ _clearaccountconf() {
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_clear_conf "$ACCOUNT_CONF_PATH" "$1"
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}
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#key
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_clearaccountconf_mutable() {
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_clearaccountconf "SAVED_$1"
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#remove later
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_clearaccountconf "$1"
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}
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#_savecaconf key value
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_savecaconf() {
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_save_conf "$CA_CONF" "$1" "$2"
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400
notify/smtp.sh
400
notify/smtp.sh
@ -2,14 +2,398 @@
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# support smtp
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smtp_send() {
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_subject="$1"
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_content="$2"
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_statusCode="$3" #0: success, 1: error 2($RENEW_SKIP): skipped
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_debug "_subject" "$_subject"
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_debug "_content" "$_content"
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_debug "_statusCode" "$_statusCode"
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# Please report bugs to https://github.com/acmesh-official/acme.sh/issues/3358
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_err "Not implemented yet."
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# This implementation uses either curl or Python (3 or 2.7).
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# (See also the "mail" notify hook, which supports other ways to send mail.)
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# SMTP_FROM="from@example.com" # required
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# SMTP_TO="to@example.com" # required
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# SMTP_HOST="smtp.example.com" # required
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# SMTP_PORT="25" # defaults to 25, 465 or 587 depending on SMTP_SECURE
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# SMTP_SECURE="tls" # one of "none", "ssl" (implicit TLS, TLS Wrapper), "tls" (explicit TLS, STARTTLS)
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# SMTP_USERNAME="" # set if SMTP server requires login
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# SMTP_PASSWORD="" # set if SMTP server requires login
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# SMTP_TIMEOUT="30" # seconds for SMTP operations to timeout
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# SMTP_BIN="/path/to/python_or_curl" # default finds first of python3, python2.7, python, pypy3, pypy, curl on PATH
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SMTP_SECURE_DEFAULT="tls"
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SMTP_TIMEOUT_DEFAULT="30"
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# subject content statuscode
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smtp_send() {
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SMTP_SUBJECT="$1"
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SMTP_CONTENT="$2"
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# UNUSED: _statusCode="$3" # 0: success, 1: error 2($RENEW_SKIP): skipped
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# Load and validate config:
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SMTP_BIN="$(_readaccountconf_mutable_default SMTP_BIN)"
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if [ -n "$SMTP_BIN" ] && ! _exists "$SMTP_BIN"; then
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_err "SMTP_BIN '$SMTP_BIN' does not exist."
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return 1
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fi
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if [ -z "$SMTP_BIN" ]; then
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# Look for a command that can communicate with an SMTP server.
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# (Please don't add sendmail, ssmtp, mutt, mail, or msmtp here.
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# Those are already handled by the "mail" notify hook.)
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for cmd in python3 python2.7 python pypy3 pypy curl; do
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if _exists "$cmd"; then
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SMTP_BIN="$cmd"
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break
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fi
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done
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if [ -z "$SMTP_BIN" ]; then
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_err "The smtp notify-hook requires curl or Python, but can't find any."
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_err 'If you have one of them, define SMTP_BIN="/path/to/curl_or_python".'
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_err 'Otherwise, see if you can use the "mail" notify-hook instead.'
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return 1
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fi
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fi
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_debug SMTP_BIN "$SMTP_BIN"
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_saveaccountconf_mutable_default SMTP_BIN "$SMTP_BIN"
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SMTP_FROM="$(_readaccountconf_mutable_default SMTP_FROM)"
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SMTP_FROM="$(_clean_email_header "$SMTP_FROM")"
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if [ -z "$SMTP_FROM" ]; then
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_err "You must define SMTP_FROM as the sender email address."
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return 1
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fi
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if _email_has_display_name "$SMTP_FROM"; then
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_err "SMTP_FROM must be only a simple email address (sender@example.com)."
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_err "Change your SMTP_FROM='$SMTP_FROM' to remove the display name."
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return 1
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fi
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_debug SMTP_FROM "$SMTP_FROM"
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_saveaccountconf_mutable_default SMTP_FROM "$SMTP_FROM"
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SMTP_TO="$(_readaccountconf_mutable_default SMTP_TO)"
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SMTP_TO="$(_clean_email_header "$SMTP_TO")"
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if [ -z "$SMTP_TO" ]; then
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_err "You must define SMTP_TO as the recipient email address(es)."
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return 1
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fi
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if _email_has_display_name "$SMTP_TO"; then
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_err "SMTP_TO must be only simple email addresses (to@example.com,to2@example.com)."
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_err "Change your SMTP_TO='$SMTP_TO' to remove the display name(s)."
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return 1
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fi
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_debug SMTP_TO "$SMTP_TO"
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_saveaccountconf_mutable_default SMTP_TO "$SMTP_TO"
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SMTP_HOST="$(_readaccountconf_mutable_default SMTP_HOST)"
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if [ -z "$SMTP_HOST" ]; then
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_err "You must define SMTP_HOST as the SMTP server hostname."
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return 1
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fi
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_debug SMTP_HOST "$SMTP_HOST"
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_saveaccountconf_mutable_default SMTP_HOST "$SMTP_HOST"
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SMTP_SECURE="$(_readaccountconf_mutable_default SMTP_SECURE "$SMTP_SECURE_DEFAULT")"
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case "$SMTP_SECURE" in
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"none") smtp_port_default="25" ;;
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"ssl") smtp_port_default="465" ;;
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"tls") smtp_port_default="587" ;;
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*)
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_err "Invalid SMTP_SECURE='$SMTP_SECURE'. It must be 'ssl', 'tls' or 'none'."
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return 1
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;;
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esac
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_debug SMTP_SECURE "$SMTP_SECURE"
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_saveaccountconf_mutable_default SMTP_SECURE "$SMTP_SECURE" "$SMTP_SECURE_DEFAULT"
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SMTP_PORT="$(_readaccountconf_mutable_default SMTP_PORT "$smtp_port_default")"
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case "$SMTP_PORT" in
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*[!0-9]*)
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_err "Invalid SMTP_PORT='$SMTP_PORT'. It must be a port number."
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return 1
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;;
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esac
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_debug SMTP_PORT "$SMTP_PORT"
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_saveaccountconf_mutable_default SMTP_PORT "$SMTP_PORT" "$smtp_port_default"
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SMTP_USERNAME="$(_readaccountconf_mutable_default SMTP_USERNAME)"
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_debug SMTP_USERNAME "$SMTP_USERNAME"
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_saveaccountconf_mutable_default SMTP_USERNAME "$SMTP_USERNAME"
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SMTP_PASSWORD="$(_readaccountconf_mutable_default SMTP_PASSWORD)"
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_secure_debug SMTP_PASSWORD "$SMTP_PASSWORD"
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_saveaccountconf_mutable_default SMTP_PASSWORD "$SMTP_PASSWORD"
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SMTP_TIMEOUT="$(_readaccountconf_mutable_default SMTP_TIMEOUT "$SMTP_TIMEOUT_DEFAULT")"
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_debug SMTP_TIMEOUT "$SMTP_TIMEOUT"
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_saveaccountconf_mutable_default SMTP_TIMEOUT "$SMTP_TIMEOUT" "$SMTP_TIMEOUT_DEFAULT"
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SMTP_X_MAILER="$(_clean_email_header "$PROJECT_NAME $VER --notify-hook smtp")"
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# Run with --debug 2 (or above) to echo the transcript of the SMTP session.
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# Careful: this may include SMTP_PASSWORD in plaintext!
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if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_2" ]; then
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SMTP_SHOW_TRANSCRIPT="True"
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else
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SMTP_SHOW_TRANSCRIPT=""
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fi
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SMTP_SUBJECT=$(_clean_email_header "$SMTP_SUBJECT")
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_debug SMTP_SUBJECT "$SMTP_SUBJECT"
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_debug SMTP_CONTENT "$SMTP_CONTENT"
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# Send the message:
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case "$(basename "$SMTP_BIN")" in
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curl) _smtp_send=_smtp_send_curl ;;
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py*) _smtp_send=_smtp_send_python ;;
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*)
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_err "Can't figure out how to invoke '$SMTP_BIN'."
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_err "Check your SMTP_BIN setting."
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return 1
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;;
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esac
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if ! smtp_output="$($_smtp_send)"; then
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_err "Error sending message with $SMTP_BIN."
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if [ -n "$smtp_output" ]; then
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_err "$smtp_output"
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fi
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return 1
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fi
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return 0
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}
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# Strip CR and NL from text to prevent MIME header injection
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# text
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_clean_email_header() {
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printf "%s" "$(echo "$1" | tr -d "\r\n")"
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}
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# Simple check for display name in an email address (< > or ")
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# email
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_email_has_display_name() {
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_email="$1"
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expr "$_email" : '^.*[<>"]' >/dev/null
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}
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##
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## curl smtp sending
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##
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# Send the message via curl using SMTP_* variables
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_smtp_send_curl() {
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# Build curl args in $@
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case "$SMTP_SECURE" in
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none)
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set -- --url "smtp://${SMTP_HOST}:${SMTP_PORT}"
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;;
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ssl)
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set -- --url "smtps://${SMTP_HOST}:${SMTP_PORT}"
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;;
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tls)
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set -- --url "smtp://${SMTP_HOST}:${SMTP_PORT}" --ssl-reqd
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;;
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*)
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# This will only occur if someone adds a new SMTP_SECURE option above
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# without updating this code for it.
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_err "Unhandled SMTP_SECURE='$SMTP_SECURE' in _smtp_send_curl"
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_err "Please re-run with --debug and report a bug."
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return 1
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;;
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esac
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set -- "$@" \
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--upload-file - \
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--mail-from "$SMTP_FROM" \
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--max-time "$SMTP_TIMEOUT"
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# Burst comma-separated $SMTP_TO into individual --mail-rcpt args.
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_to="${SMTP_TO},"
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while [ -n "$_to" ]; do
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_rcpt="${_to%%,*}"
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_to="${_to#*,}"
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set -- "$@" --mail-rcpt "$_rcpt"
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done
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_smtp_login="${SMTP_USERNAME}:${SMTP_PASSWORD}"
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if [ "$_smtp_login" != ":" ]; then
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set -- "$@" --user "$_smtp_login"
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fi
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if [ "$SMTP_SHOW_TRANSCRIPT" = "True" ]; then
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set -- "$@" --verbose
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else
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set -- "$@" --silent --show-error
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fi
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raw_message="$(_smtp_raw_message)"
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_debug2 "curl command:" "$SMTP_BIN" "$*"
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_debug2 "raw_message:\n$raw_message"
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echo "$raw_message" | "$SMTP_BIN" "$@"
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}
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# Output an RFC-822 / RFC-5322 email message using SMTP_* variables.
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# (This assumes variables have already been cleaned for use in email headers.)
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_smtp_raw_message() {
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echo "From: $SMTP_FROM"
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echo "To: $SMTP_TO"
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echo "Subject: $(_mime_encoded_word "$SMTP_SUBJECT")"
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echo "Date: $(_rfc2822_date)"
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echo "Content-Type: text/plain; charset=utf-8"
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echo "X-Mailer: $SMTP_X_MAILER"
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echo
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echo "$SMTP_CONTENT"
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}
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# Convert text to RFC-2047 MIME "encoded word" format if it contains non-ASCII chars
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# text
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_mime_encoded_word() {
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_text="$1"
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# (regex character ranges like [a-z] can be locale-dependent; enumerate ASCII chars to avoid that)
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_ascii='] $`"'"[!#%&'()*+,./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ~^_abcdefghijklmnopqrstuvwxyz{|}~-"
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if expr "$_text" : "^.*[^$_ascii]" >/dev/null; then
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# At least one non-ASCII char; convert entire thing to encoded word
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printf "%s" "=?UTF-8?B?$(printf "%s" "$_text" | _base64)?="
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else
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# Just printable ASCII, no conversion needed
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printf "%s" "$_text"
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fi
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}
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# Output current date in RFC-2822 Section 3.3 format as required in email headers
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# (e.g., "Mon, 15 Feb 2021 14:22:01 -0800")
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_rfc2822_date() {
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# Notes:
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# - this is deliberately not UTC, because it "SHOULD express local time" per spec
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# - the spec requires weekday and month in the C locale (English), not localized
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# - this date format specifier has been tested on Linux, Mac, Solaris and FreeBSD
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_old_lc_time="$LC_TIME"
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LC_TIME=C
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date +'%a, %-d %b %Y %H:%M:%S %z'
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LC_TIME="$_old_lc_time"
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}
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##
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## Python smtp sending
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##
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# Send the message via Python using SMTP_* variables
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_smtp_send_python() {
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_debug "Python version" "$("$SMTP_BIN" --version 2>&1)"
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# language=Python
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"$SMTP_BIN" <<PYTHON
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# This code is meant to work with either Python 2.7.x or Python 3.4+.
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try:
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try:
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from email.message import EmailMessage
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from email.policy import default as email_policy_default
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except ImportError:
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# Python 2 (or < 3.3)
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from email.mime.text import MIMEText as EmailMessage
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email_policy_default = None
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from email.utils import formatdate as rfc2822_date
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from smtplib import SMTP, SMTP_SSL, SMTPException
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from socket import error as SocketError
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except ImportError as err:
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print("A required Python standard package is missing. This system may have"
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" a reduced version of Python unsuitable for sending mail: %s" % err)
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exit(1)
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show_transcript = """$SMTP_SHOW_TRANSCRIPT""" == "True"
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smtp_host = """$SMTP_HOST"""
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smtp_port = int("""$SMTP_PORT""")
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smtp_secure = """$SMTP_SECURE"""
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username = """$SMTP_USERNAME"""
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password = """$SMTP_PASSWORD"""
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timeout=int("""$SMTP_TIMEOUT""") # seconds
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x_mailer="""$SMTP_X_MAILER"""
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from_email="""$SMTP_FROM"""
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to_emails="""$SMTP_TO""" # can be comma-separated
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subject="""$SMTP_SUBJECT"""
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content="""$SMTP_CONTENT"""
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try:
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msg = EmailMessage(policy=email_policy_default)
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msg.set_content(content)
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except (AttributeError, TypeError):
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# Python 2 MIMEText
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msg = EmailMessage(content)
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msg["Subject"] = subject
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msg["From"] = from_email
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msg["To"] = to_emails
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msg["Date"] = rfc2822_date(localtime=True)
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msg["X-Mailer"] = x_mailer
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smtp = None
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try:
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if smtp_secure == "ssl":
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smtp = SMTP_SSL(smtp_host, smtp_port, timeout=timeout)
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else:
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smtp = SMTP(smtp_host, smtp_port, timeout=timeout)
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smtp.set_debuglevel(show_transcript)
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if smtp_secure == "tls":
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smtp.starttls()
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if username or password:
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smtp.login(username, password)
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smtp.sendmail(msg["From"], msg["To"].split(","), msg.as_string())
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except SMTPException as err:
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# Output just the error (skip the Python stack trace) for SMTP errors
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print("Error sending: %r" % err)
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exit(1)
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except SocketError as err:
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print("Error connecting to %s:%d: %r" % (smtp_host, smtp_port, err))
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exit(1)
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finally:
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if smtp is not None:
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smtp.quit()
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PYTHON
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}
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##
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## Conf helpers
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##
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#_readaccountconf_mutable_default name default_value
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# Given a name like MY_CONF:
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# - if MY_CONF is set and non-empty, output $MY_CONF
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# - if MY_CONF is set _empty_, output $default_value
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# (lets user `export MY_CONF=` to clear previous saved value
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# and return to default, without user having to know default)
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# - otherwise if _readaccountconf_mutable MY_CONF is non-empty, return that
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# (value of SAVED_MY_CONF from account.conf)
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# - otherwise output $default_value
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_readaccountconf_mutable_default() {
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_name="$1"
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_default_value="$2"
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eval "_value=\"\$$_name\""
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eval "_name_is_set=\"\${${_name}+true}\""
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# ($_name_is_set is "true" if $$_name is set to anything, including empty)
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if [ -z "${_value}" ] && [ "${_name_is_set:-}" != "true" ]; then
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_value="$(_readaccountconf_mutable "$_name")"
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fi
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if [ -z "${_value}" ]; then
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_value="$_default_value"
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fi
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printf "%s" "$_value"
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}
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#_saveaccountconf_mutable_default name value default_value base64encode
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# Like _saveaccountconf_mutable, but if value is default_value
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# then _clearaccountconf_mutable instead
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_saveaccountconf_mutable_default() {
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_name="$1"
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_value="$2"
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_default_value="$3"
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_base64encode="$4"
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if [ "$_value" != "$_default_value" ]; then
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_saveaccountconf_mutable "$_name" "$_value" "$_base64encode"
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else
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_clearaccountconf_mutable "$_name"
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fi
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}
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