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@ -2,14 +2,398 @@ |
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# support smtp |
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# support smtp |
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# Please report bugs to https://github.com/acmesh-official/acme.sh/issues/3358 |
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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_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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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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_err "Not implemented yet." |
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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='$SMTP_SECURE' in _smtp_send_curl" |
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_err "Please re-run with --debug and report a bug." |
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return 1 |
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return 1 |
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;; |
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esac |
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set -- "$@" \ |
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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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} |
neil
4 years ago
GitHub