diff --git a/new-file b/new-file deleted file mode 100644 index e69de29..0000000 diff --git a/telegram b/telegram new file mode 100755 index 0000000..a562460 --- /dev/null +++ b/telegram @@ -0,0 +1,454 @@ +#!/bin/bash + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +VERSION="0.4" +TOKEN="2021660264:AAHAMctZcI0vP7vB_uto-vfUkiUDNABbQVo" +CHATS=(-1001541565264) +DEBUG=false +DRY_RUN=false + +IMAGE_FILE="" +DOCUMENT_FILE="" +PARSE_MODE="" +CODE_MODE=0 +CRON_MODE=0 +ACTION="" +TITLE="" +DISABLE_WEB_PAGE_PREVIEW=false +DISABLE_NOTIFICATION=false + +URL="https://api.telegram.org/bot" +FILE_URL="https://api.telegram.org/file/bot" +CURL_OPTIONS="-s" + +HAS_JQ=false +hash jq >/dev/null 2>&1 && HAS_JQ=true + + +function help { + version + echo "Usage: $0 [options] [message]" + echo + echo "OPTIONS are:" + echo " -t Telegram bot token to use. See ENVIRONMENT for more information." + echo " -c Chat to use as recipient. Can be given more than once. See ENVIRONMENT for more information." + echo " -f Sends file." + echo " -i Sends file as image. This will fail if the file isn't an actual image file." + echo " -M Enables Markdown processing at telegram." + echo " -H Enables HTML processing at telegram." + echo " -C Sends text as monospace code. Useful when piping command outputs into this tool." + echo " -r Like -C, but if the first line starts with '+ ', it is specially formatted." + echo " -T Sets a title for the message. Printed in bold text if -M or -H is used." + echo " -l Fetch known chat_ids." + echo " -R Receive a file sent via telegram." + echo " -D Sets disable_web_page_preview parameter to, well, disable the preview for links to webpages." + echo " Can also be set in config as TELEGRAM_DISABLE_WEB_PAGE_PREVIEW=true (see ENVIRONMENT)" + echo " This feature is only supported for text messages, not when sending files or images (-f, -i)." + echo " -N Diables notifications on clients. Users will receive a notification with no sound." + echo " Can also be set in config as TELEGRAM_DISABLE_NOTIFICATION=true (see ENVIRONMENT)" + echo " -m Outputs the last received message. Format is: <Message ID> <Sender ID> <Chat ID> <Text>" + echo + echo "DEBUGGING OPTIONS are:" + echo " -v Display lots of more or less useful information." + echo " -j Pretend you don't have JQ installed." + echo " -n Dry-run - don't send messages, only print them on screen." + echo + echo "Message can be '-', in that case STDIN will be used." + echo + echo "ENVIRONMENT" + echo " TOKEN and CHAT_ID are required. You can set them in four different ways:" + echo " 1) globally in /etc/telegram.sh.conf" + echo " 2) user-local in ~/.telegram.sh" + echo " 3) user-local in ~/.telegram.sh.conf" + echo " 4) via environment variables TELEGRAM_TOKEN and TELEGRAM_CHAT" + echo " 5) via options -t and -c" + echo " Later methods overwrite earlier settings, so you can easily override global settings." + echo " Please be aware that you shuld keep your telegram token secret!" + echo + exit +} + +function version { + echo "telegram.sh version $VERSION" + echo "by Fabian Schlenz" +} + +function list_chats { + log "$URL$TOKEN" + response=`curl $CURL_OPTIONS $URL$TOKEN/getUpdates` + log "$response" + + if [ "$HAS_JQ" = true ]; then + echo "These are the available chats that I can find right now. The ID is the number at the front." + echo "If there are no chats or the chat you are looking for isn't there, run this command again" + echo "after sending a message to your bot via telegram." + echo + jq -r '.result | .[].message.chat | "\(.id|tostring) - \(.first_name) \(.last_name) (@\(.username))"' 2>/dev/null <<< "$response" || { + echo "Could not parse reponse from Telegram." + echo "Response was: $response" + exit 1 + } + else + echo "You don't have jq installed. I'm afraid I can't parse the JSON from telegram without it." + echo "So I'll have you do it. ;-)" + echo + echo "Please look for your chat_id in this output by yourself." + echo 'Look for something like "chat":{"id":<CHAT_ID> and verify that first_name, last_name and' + echo "username match your expected chat." + echo + echo "If there are no chats listed or the chat you are looking for isn't there, try again after" + echo "sending a message to your bot via telegram." + echo + echo $response + fi +} + +function receive_message { + if [ "$HAS_JQ" = false ]; then + echo "You need to have jq installed in order to be able to receive messages." + exit 1 + fi + + result=`curl $CURL_OPTIONS $URL$TOKEN/getUpdates?allowed_updates=message` + log "$result" + if [ "`jq '.result' <<< "$result"`" = "[]" ]; then + echo "No recent messages." + exit 1 + fi + + jq -r '.result[-1].message | [(.message_id|tostring), (.from.id|tostring), (.chat.id|tostring), .text] | join(" ")' <<< "$result" + exit 0 +} + + +function receive_file { + if [ "$HAS_JQ" = false ]; then + echo "You need to have jq installed in order to be able to download files." + exit 1 + fi + + result=`curl $CURL_OPTIONS $URL$TOKEN/getUpdates?allowed_updates=message` + log "$result" + # {"ok":true,"result":[ + # { + # "update_id":441727866, + # "message":{ + # "message_id":8339, + # "from":{"id":15773,"is_bot":false,"first_name":"Fabian","last_name":"Schlenz","username":"fabianonline","language_code":"de"}, + # "chat":{"id":15773,"first_name":"Fabian","last_name":"Schlenz","username":"fabianonline","type":"private"}, + # "date":1526564127, + # "document":{"file_name":"desktop.ini","file_id":"BQAav-HkXugI","file_size":282}}}]} + file_id=`jq -r '.result[-1].message.document.file_id' <<< "$result"` + log "file_id: $file_id" + if [ "$file_id" == "null" ]; then + echo "Last message received apparently didn't contain a file. Aborting." + exit 1 + fi + file_name=`jq -r '.result[-1].message.document.file_name' <<< "$result"` + log "file_name: $file_name" + result=`curl $CURL_OPTIONS $URL$TOKEN/getFile?file_id=$file_id` + log $result + # {"ok":true,"result":{"file_id":"BQAav-HkXugI","file_size":282,"file_path":"documents/file_271.ini"}} + path=`jq -r '.result.file_path' <<< "$result"` + log "path: $path" + if [ "$path" == "null" ]; then + echo "Could not parse telegram's response to getFile. Aborting." + exit 1 + fi + file_name="`date +%s`_$file_name" + log "file_name: $file_name" + if [ -e "$file_name" ]; then + echo "File $file_name already exists. This is unexpected, so I'm quitting now." + exit 1 + fi + curl $FILE_URL$TOKEN/$path --output "$file_name" + echo "File downloaded as $file_name" +} + +function log { + [ "$DEBUG" = true ] && echo "DEBUG: $1" +} + +function check_file { + if [ ! -e "$1" ]; then + echo "The file $1 does not exist." + exit 1 + fi + + size=$(stat -c%s "$1") + if (( size > 52428800 )); then + echo "File $1 is breaking the file size limit imposed on Telegram bots (currently 50MB)." + exit 1 + fi +} + +function escapeMarkdown { + res="${1//\*/∗}" + res="${res//_/＿}" + res="${res//\`/‵}" + #res="${res//\//∕}" + echo "$res" +} + +while getopts "t:c:i:f:MHCrhlvjnRmDNT:" opt; do + case $opt in + t) + TOKEN="$OPTARG" + ;; + c) + CHATS+=("$OPTARG") + ;; + i) + IMAGE_FILE="$OPTARG" + ;; + f) + DOCUMENT_FILE="$OPTARG" + ;; + M) + PARSE_MODE="Markdown" + ;; + H) + PARSE_MODE="HTML" + ;; + C) + PARSE_MODE="Markdown" + CODE_MODE=1 + ;; + r) + PARSE_MODE="Markdown" + CRON_MODE=1 + ;; + l) + ACTION="list_chats" + ;; + v) + DEBUG=true + ;; + j) + HAS_JQ=false + ;; + n) + DRY_RUN=true + ;; + R) + ACTION="receive_file" + ;; + m) + ACTION="receive_message" + ;; + D) + DISABLE_WEB_PAGE_PREVIEW=true + ;; + N) + DISABLE_NOTIFICATION=true + ;; + T) + TITLE="$OPTARG" + ;; + ?|h) + help + ;; + :) + echo "Option -$OPTARG needs an argument." + exit 1 + ;; + \?) + echo "Invalid option -$OPTARG" + exit 1 + ;; + esac +done + +if [ "$CRON_MODE" -eq 1 ] && [ "$CODE_MODE" -eq 1 ]; then + echo "You can either use -C or -r, but not both." + exit 1 +fi + +log "TOKEN is now $TOKEN" +log "CHATS is now ${CHATS[*]}" + +[ -z "$TOKEN" ] && TOKEN=$TELEGRAM_TOKEN +[ ${#CHATS[@]} -eq 0 ] && CHATS=($TELEGRAM_CHAT) + +log "TOKEN is now $TOKEN" +log "CHATS is now ${CHATS[*]}" + +log "Importing config file(s)..." + +[ -r /etc/telegram.sh.conf ] && source /etc/telegram.sh.conf +[ -r ~/.telegram.sh ] && source ~/.telegram.sh +[ -r ~/.telegram.sh.conf ] && source ~/.telegram.sh.conf + +[ -z "$TOKEN" ] && TOKEN=$TELEGRAM_TOKEN +[ ${#CHATS[@]} -eq 0 ] && CHATS=($TELEGRAM_CHAT) +[ -n "$TELEGRAM_DISABLE_WEB_PAGE_PREVIEW" ] && DISABLE_WEB_PAGE_PREVIEW="$TELEGRAM_DISABLE_WEB_PAGE_PREVIEW" +[ -n "$TELEGRAM_DISABLE_NOTIFICATION" ] && DISABLE_NOTIFICATION="$TELEGRAM_DISABLE_NOTIFICATION" + +log "TOKEN is now $TOKEN" +log "CHATS is now ${CHATS[*]}" +log "DISABLE_WEB_PAGE_PREVIEW is now $DISABLE_WEB_PAGE_PREVIEW" +log "DISABLE_NOTIFICATION is now $DISABLE_NOTIFICATION" + +if [ -z "$TOKEN" ]; then + echo "No bot token was given." + exit 1 +fi + +if [ ${#CHATS[@]} -eq 0 ] && [ -z "$ACTION" ]; then + echo "No chat(s) given." + exit 1 +fi + +if [ "$ACTION" = "list_chats" ]; then + list_chats + exit 0 +fi + +if [ "$ACTION" = "receive_file" ]; then + receive_file + exit 0 +fi + +if [ "$ACTION" = "receive_message" ]; then + receive_message + exit 0 +fi + +shift $((OPTIND - 1)) +TEXT="$1" +log "Text: $TEXT" + +[ "$TEXT" = "-" ] && TEXT=$(</dev/stdin) + +log "Text: $TEXT" + +if [ $CODE_MODE -eq 1 ]; then + TEXT='```'$'\n'$TEXT$'\n''```' +fi + +if [ $CRON_MODE -eq 1 ]; then + ONLY_COMMANDS=1 + while read line; do + if [ "${line:0:2}" = "+ " ]; then + ONLY_COMMANDS=0 + fi + done <<< "$TEXT" + + if [ "$ONLY_COMMANDS" -eq 1 ]; then + exit 0 + fi + + TEXT='```'$'\n'$TEXT$'\n''```' + + #FIRST_LINE=1 + #BLOCK_OPEN=0 + #NEW_TEXT="" + #while read line; do + # if [ "${line:0:2}" = "+ " ]; then + # if [ "$BLOCK_OPEN" -eq 1 ]; then + # NEW_TEXT="$NEW_TEXT"'```'$'\n' + # BLOCK_OPEN=0 + # fi + # NEW_TEXT="$NEW_TEXT*`escapeMarkdown "${line:2}"`*"$'\n' + # else + # if [ "$BLOCK_OPEN" -eq 0 ]; then + # NEW_TEXT="$NEW_TEXT"'```'$'\n' + # BLOCK_OPEN=1 + # fi + # NEW_TEXT="$NEW_TEXT$line"$'\n' + # fi + #done <<< "$TEXT" + #[ "$BLOCK_OPEN" -eq 1 ] && NEW_TEXT="$NEW_TEXT"'```' + #TEXT="$NEW_TEXT" +fi + +log "Text: $TEXT" + +if [ -n "$TITLE" ]; then + if [ "$PARSE_MODE" == "HTML" ]; then + TEXT="<b>$TITLE</b>"$'\n\n'"$TEXT" + elif [ "$PARSE_MODE" == "Markdown" ]; then + TEXT="*$TITLE*"$'\n\n'"$TEXT" + else + TEXT="$TITLE"$'\n\n'"$TEXT" + fi +fi + +if [ -z "$TEXT" ] && [ -z "$DOCUMENT_FILE" ] && [ -z "$IMAGE_FILE" ]; then + echo "Neither text nor image or other file given." + exit 1 +fi + +if [ -n "$DOCUMENT_FILE" ] && [ -n "$IMAGE_FILE" ]; then + echo "You can't send a file AND an image at the same time." + exit 1 +fi + +[ -n "$PARSE_MODE" ] && CURL_OPTIONS="$CURL_OPTIONS --form-string parse_mode=$PARSE_MODE" +if [ -n "$DOCUMENT_FILE" ]; then + check_file "$DOCUMENT_FILE" + + CURL_OPTIONS="$CURL_OPTIONS --form document=@\"$DOCUMENT_FILE\"" + CURL_OPTIONS="$CURL_OPTIONS --form caption=<-" + METHOD="sendDocument" +elif [ -n "$IMAGE_FILE" ]; then + check_file "$IMAGE_FILE" + CURL_OPTIONS="$CURL_OPTIONS --form photo=@\"$IMAGE_FILE\"" + CURL_OPTIONS="$CURL_OPTIONS --form caption=<-" + METHOD="sendPhoto" +else + CURL_OPTIONS="$CURL_OPTIONS --form text=<-" + [ "$DISABLE_WEB_PAGE_PREVIEW" = true ] && CURL_OPTIONS="$CURL_OPTIONS --form-string disable_web_page_preview=true" + METHOD="sendMessage" +fi + +[ "$DISABLE_NOTIFICATION" = true ] && CURL_OPTIONS="$CURL_OPTIONS --form-string disable_notification=true" + +for id in "${CHATS[@]}"; do + MY_CURL_OPTIONS="$CURL_OPTIONS --form-string chat_id=$id $URL$TOKEN/$METHOD" + if [ "$DRY_RUN" = true ]; then + echo "Executing: curl $MY_CURL_OPTIONS" + echo " Text: $TEXT" + echo + status=0 + response='{"ok": true}' + else + response=`curl $MY_CURL_OPTIONS <<< "$TEXT"` + status=$? + fi + log "Response was: $response" + if [ $status -ne 0 ]; then + echo "curl reported an error. Exit code was: $status." + echo "Response was: $response" + echo "Quitting." + exit $status + fi + + if [ "$HAS_JQ" = true ]; then + if [ "`jq -r '.ok' <<< "$response"`" != "true" ]; then + echo "Telegram reported following error:" + jq -r '"\(.error_code): \(.description)"' <<< "$response" + echo "Quitting." + exit 1 + fi + else + if [[ "$response" != '{"ok":true'* ]]; then + echo "Telegram reported an error:" + echo $response + echo "Quitting." + exit 1 + fi + fi +done