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@@ -2,14 +2,398 @@
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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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+
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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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+
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+# SMTP_FROM="[email protected]" # required
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+# SMTP_TO="[email protected]" # 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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+
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+SMTP_SECURE_DEFAULT="tls"
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+SMTP_TIMEOUT_DEFAULT="30"
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+
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+# subject content statuscode
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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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-
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- _err "Not implemented yet."
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- return 1
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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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+
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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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+
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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 "$SMTP_FROM"; then
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+ _err "SMTP_FROM must be only a simple email address ([email protected])."
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+ _err "Change your SMTP_FROM='$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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+
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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 "$SMTP_TO"; then
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+ _err "SMTP_TO must be only simple email addresses ([email protected],[email protected])."
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+ _err "Change your SMTP_TO='$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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+
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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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+
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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" "$SMTP_SECURE_DEFAULT"
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+
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+ SMTP_PORT="$(_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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+
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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 "$SMTP_USERNAME"
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+
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+ SMTP_PASSWORD="$(_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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+
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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" "$SMTP_TIMEOUT_DEFAULT"
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+
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+ SMTP_X_MAILER="$(_clean_email_header "$PROJECT_NAME $VER --notify-hook smtp")"
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+
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+ # Run with --debug 2 (or above) to echo the transcript of the SMTP session.
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+ # Careful: this may include SMTP_PASSWORD in plaintext!
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+ if [ "${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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+
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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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+
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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 '$SMTP_BIN'."
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+ _err "Check your SMTP_BIN setting."
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+ return 1
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+ ;;
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+ esac
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+
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+ if ! smtp_output="$($_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 "$smtp_output"
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+ fi
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+ return 1
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+ fi
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+
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+ return 0
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+}
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+
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+# Strip CR and NL from text to prevent MIME header injection
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+# text
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+_clean_email_header() {
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+ printf "%s" "$(echo "$1" | tr -d "\r\n")"
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+}
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+
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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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+##
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+## curl smtp sending
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+##
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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='$SMTP_SECURE' in _smtp_send_curl"
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+ _err "Please re-run with --debug and report a bug."
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+ return 1
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+ ;;
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+ esac
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+
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+ set -- "$@" \
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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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+
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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 "$_rcpt"
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+ done
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+
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+ _smtp_login="${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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+
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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 -- "$@" --silent --show-error
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+ fi
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+
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+ raw_message="$(_smtp_raw_message)"
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+
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+ _debug2 "curl command:" "$SMTP_BIN" "$*"
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+ _debug2 "raw_message:\n$raw_message"
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+
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+ echo "$raw_message" | "$SMTP_BIN" "$@"
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+}
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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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+
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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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+
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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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+##
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+## Python smtp sending
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+##
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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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+
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+ # language=Python
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+ "$SMTP_BIN" <<PYTHON
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+# This code is meant to work with either Python 2.7.x or Python 3.4+.
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+try:
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+ try:
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+ from email.message import EmailMessage
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+ from email.policy import default as email_policy_default
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+ except ImportError:
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+ # Python 2 (or < 3.3)
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+ from email.mime.text import MIMEText as EmailMessage
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+ email_policy_default = None
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+ from email.utils import formatdate as rfc2822_date
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+ from smtplib import SMTP, SMTP_SSL, SMTPException
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+ from socket import error as SocketError
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+except ImportError as err:
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+ print("A required Python standard package is missing. This system may have"
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+ " a reduced version of Python unsuitable for sending mail: %s" % err)
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+ exit(1)
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+
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+show_transcript = """$SMTP_SHOW_TRANSCRIPT""" == "True"
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+
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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="""$SMTP_X_MAILER"""
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+
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+from_email="""$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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+
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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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+
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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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+
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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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+
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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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+
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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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+##
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+## Conf helpers
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+##
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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)
|
|
|
+# - otherwise output $default_value
|
|
|
+_readaccountconf_mutable_default() {
|
|
|
+ _name="$1"
|
|
|
+ _default_value="$2"
|
|
|
+
|
|
|
+ eval "_value=\"\$$_name\""
|
|
|
+ eval "_name_is_set=\"\${${_name}+true}\""
|
|
|
+ # ($_name_is_set is "true" if $$_name is set to anything, including empty)
|
|
|
+ if [ -z "${_value}" ] && [ "${_name_is_set:-}" != "true" ]; then
|
|
|
+ _value="$(_readaccountconf_mutable "$_name")"
|
|
|
+ fi
|
|
|
+ if [ -z "${_value}" ]; then
|
|
|
+ _value="$_default_value"
|
|
|
+ fi
|
|
|
+ printf "%s" "$_value"
|
|
|
+}
|
|
|
+
|
|
|
+#_saveaccountconf_mutable_default name value default_value base64encode
|
|
|
+# Like _saveaccountconf_mutable, but if value is default_value
|
|
|
+# then _clearaccountconf_mutable instead
|
|
|
+_saveaccountconf_mutable_default() {
|
|
|
+ _name="$1"
|
|
|
+ _value="$2"
|
|
|
+ _default_value="$3"
|
|
|
+ _base64encode="$4"
|
|
|
+
|
|
|
+ if [ "$_value" != "$_default_value" ]; then
|
|
|
+ _saveaccountconf_mutable "$_name" "$_value" "$_base64encode"
|
|
|
+ else
|
|
|
+ _clearaccountconf_mutable "$_name"
|
|
|
+ fi
|
|
|
}
|
neil