octoleo/telegram-bot-bash
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Merge pull request #71 from topkecleon/develop

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Bashbot Version 0.52 - user access control
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Kay Marquardt 2019-04-13 11:05:34 +02:00 committed by GitHub
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8
README.md
View File

@ -8,7 +8,7 @@ Written by Drew (@topkecleon), Daniil Gentili (@danogentili), and Kay M (@gnadel
Contributions by JuanPotato, BigNerd95, TiagoDanin, and iicc1.
[Download from github](https://github.com/topkecleon/telegram-bot-bash/releases)
[Download latest release from github](https://github.com/topkecleon/telegram-bot-bash/releases)
Released to the public domain wherever applicable.
Elsewhere, consider it released under the [WTFPLv2](http://www.wtfpl.net/txt/copying/).
@ -25,7 +25,8 @@ git clone --recursive https://github.com/topkecleon/telegram-bot-bash
```
3. Change to directory ```telegram-bot.bash```, run ```./bashbot.sh init``` and follow the instructions. At this stage you are asked for your Bots token given by botfather.
## Update bashbot
[Download latest update zip from github](https://github.com/topkecleon/telegram-bot-bash/releases) and copy all files to bashbot dir. run ```sudo ./bashbot.sh init```.
## Getting started
- [Create your first telegram bot](doc/1_firstbot.md)
@ -35,6 +36,7 @@ git clone --recursive https://github.com/topkecleon/telegram-bot-bash
- Send Messages
- Send files, location etc.
- [Advanced Features](doc/3_advanced.md)
- Access Control
- Interactive Chats
- Background Jobs
- Inline queries
@ -73,4 +75,4 @@ No - its not less (in)secure as any other Bot written in any other language. But
If you feel that there's something missing or if you found a bug, feel free to submit a pull request!
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

14
README.txt
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@ -11,8 +11,8 @@ Written by Drew (@topkecleon), Daniil Gentili (@danogentili), and Kay M
Contributions by JuanPotato, BigNerd95, TiagoDanin, and iicc1.
https://github.com/topkecleon/telegram-bot-bash/releases[Download from
github]
https://github.com/topkecleon/telegram-bot-bash/releases[Download latest
release from github]
Released to the public domain wherever applicable. Elsewhere, consider
it released under the http://www.wtfpl.net/txt/copying/[WTFPLv2].
@ -34,6 +34,13 @@ git clone --recursive https://github.com/topkecleon/telegram-bot-bash
follow the instructions. At this stage you are asked for your Bots token
given by botfather.
Update bashbot
~~~~~~~~~~~~~~
https://github.com/topkecleon/telegram-bot-bash/releases[Download latest
update zip from github] and copy all files to bashbot dir. run
`sudo ./bashbot.sh init`.
Getting started
~~~~~~~~~~~~~~~
@ -44,6 +51,7 @@ Getting started
* Send Messages
* Send files, location etc.
* link:doc/3_advanced.md[Advanced Features]
* Access Control
* Interactive Chats
* Background Jobs
* Inline queries
@ -111,5 +119,5 @@ That's it!
If you feel that there's something missing or if you found a bug, feel
free to submit a pull request!
latexmath:[\[VERSION\]] v0.51-0-g0356270
latexmath:[\[VERSION\]] v0.52-0-gdb7b19f
++++++++++++++++++++++++++++++++++++++++

2
bashbot.cron
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@ -7,7 +7,7 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
SHELL=/bin/sh

6
bashbot.rc
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@ -1,7 +1,7 @@
#!/bin/sh
# description: Start or stop telegram-bash-bot
#
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
# shellcheck disable=SC2009
# shellcheck disable=SC2181
@ -17,14 +17,14 @@
# save default values
TERM="" # disable bashbot clear and color output
runas="nobody" # not recommended!
runas="nobody"
runcmd="echo Dry run:" # not actived until you edit lines below
#######################
# Configuration Section
# edit the next line to fit the user you want to run bashbot, e.g. nobody:
runas="nobody"
# runas="nobody"
# uncomment one of the following lines to fit your system
# runcmd="su $runas -s /bin/bash -c " # runasuser with *su*

131
bashbot.sh
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@ -10,12 +10,12 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
#
# Exit Codes:
# - 0 sucess (hopefully)
# - 1 can't change to bashbot dir
# - 2 can't write to tmp and / or count
# - 1 can't change to dir
# - 2 can't write to tmp, count or token
# - 3 user not found
# - 4 unkown command
@ -31,7 +31,7 @@ fi
# get location of bashbot.sh an change to bashbot dir
SCRIPT="./$(basename "$0")"
SCRIPTDIR="$(dirname "$0")"
RUNUSER="$USER" # USER is overwritten as array, $USER may not work later on...
RUNUSER="${USER}" # USER is overwritten by bashbot array, $USER may not work later on...
if ! cd "${SCRIPTDIR}" ; then
echo -e "${RED}ERROR: Can't change to ${SCRIPTDIR} ...${NC}"
@ -39,7 +39,7 @@ if ! cd "${SCRIPTDIR}" ; then
fi
if [ ! -w "." ]; then
echo -e "${ORANGE}WARNING: $SCRIPTDIR is not writeable!${NC}"
echo -e "${ORANGE}WARNING: ${SCRIPTDIR} is not writeable!${NC}"
ls -ld .
fi
@ -49,31 +49,58 @@ if [ ! -f "JSON.sh/JSON.sh" ]; then
echo "JSON.sh has been downloaded. Proceeding."
fi
if [ ! -f "token" ]; then
$CLEAR
TOKEN="./token"
if [ ! -f "${TOKEN}" ]; then
if [ "${CLEAR}" == "" ]; then
echo "Running headless, run ${SCRIPT} init first!"
exit 2
else
${CLEAR}
echo -e "${RED}TOKEN MISSING.${NC}"
echo -e "${ORANGE}PLEASE WRITE YOUR TOKEN HERE${NC}"
read -r token
echo "$token" >> "token"
echo "${token}" > "${TOKEN}"
fi
fi
BOTADMIN="./botadmin"
if [ ! -f "${BOTADMIN}" ]; then
if [ "${CLEAR}" == "" ]; then
echo "Running headless, set botadmin to AUTO MODE!"
echo "?" > "${BOTADMIN}"
else
${CLEAR}
echo -e "${RED}BOTADMIN MISSING.${NC}"
echo -e "${ORANGE}PLEASE WRITE YOUR TELEGRAM ID HERE OR ENTER '?'${NC}"
echo -e "${ORANGE}TO MAKE FIRST USER TYPING '/start' TO BOTADMIN${NC}"
read -r token
echo "${token}" > "${BOTADMIN}"
fi
fi
BOTACL="./botacl"
if [ ! -f "${BOTACL}" ]; then
echo -e "${ORANGE}Create empty ${BOTACL} file.${NC}"
touch "${BOTACL}"
fi
TMPDIR="./tmp-bot-bash"
if [ ! -d "$TMPDIR" ]; then
mkdir "$TMPDIR"
elif [ ! -w "$TMPDIR" ]; then
$CLEAR
echo -e "${RED}ERROR: Can't write to $TMPDIR!.${NC}"
ls -ld "$TMPDIR"
if [ ! -d "${TMPDIR}" ]; then
mkdir "${TMPDIR}"
elif [ ! -w "${TMPDIR}" ]; then
${CLEAR}
echo -e "${RED}ERROR: Can't write to ${TMPDIR}!.${NC}"
ls -ld "${TMPDIR}"
exit 2
fi
COUNT="./count"
if [ ! -f "$COUNT" ]; then
touch "$COUNT"
elif [ ! -w "$COUNT" ]; then
$CLEAR
echo -e "${RED}ERROR: Can't write to $COUNT!.${NC}"
ls -l "$COUNT"
if [ ! -f "${COUNT}" ]; then
touch "${COUNT}"
elif [ ! -w "${COUNT}" ]; then
${CLEAR}
echo -e "${RED}ERROR: Can't write to ${COUNT}!.${NC}"
ls -l "${COUNT}"
exit 2
fi
@ -99,7 +126,8 @@ FORWARD_URL=$URL'/forwardMessage'
INLINE_QUERY=$URL'/answerInlineQuery'
ME_URL=$URL'/getMe'
DELETE_URL=$URL'/deleteMessage'
ME=$(curl -s "$ME_URL" | ./JSON.sh/JSON.sh -s | grep '\["result","username"\]' | cut -f 2 | cut -d '"' -f 2)
GETMEMBER_URL=$URL'/getChatMember'
ME="$(curl -s "$ME_URL" | ./JSON.sh/JSON.sh -s | grep '\["result","username"\]' | cut -f 2 | cut -d '"' -f 2)"
FILE_URL='https://api.telegram.org/file/bot'$TOKEN'/'
@ -120,7 +148,8 @@ send_message() {
text="$(echo "$2" | sed 's/ mykeyboardstartshere.*//g;s/ myfilelocationstartshere.*//g;s/ mylatstartshere.*//g;s/ mylongstartshere.*//g;s/ mytitlestartshere.*//g;s/ myaddressstartshere.*//g;s/ mykeyboardendshere.*//g')"
arg="$3"
[ "$arg" != "safe" ] && {
text="$(echo "$text" | sed 's/ mynewlinestartshere /\r\n/g')" # hack for linebreaks in startproc scripts
#text="$(echo "$text" | sed 's/ mynewlinestartshere /\r\n/g')" # hack for linebreaks in startproc scripts
text="${text// mynewlinestartshere /$'\r\n'}"
no_keyboard="$(echo "$2" | sed '/mykeyboardendshere/!d;s/.*mykeyboardendshere.*/mykeyboardendshere/')"
keyboard="$(echo "$2" | sed '/mykeyboardstartshere /!d;s/.*mykeyboardstartshere //g;s/ myfilelocationstartshere.*//g;s/ mylatstartshere.*//g;s/ mylongstartshere.*//g;s/ mytitlestartshere.*//g;s/ myaddressstartshere.*//g;s/ mykeyboardendshere.*//g')"
@ -205,6 +234,11 @@ delete_message() {
res="$(curl -s "$DELETE_URL" -F "chat_id=$1" -F "message_id=$2")"
}
# usage: status="$(get_chat_member_status "chat" "user")"
get_chat_member_status() {
curl -s "$GETMEMBER_URL" -F "chat_id=$1" -F "user_id=$2" | ./JSON.sh/JSON.sh -s | sed -n -e '/\["result","status"\]/ s/.*\][ \t]"\(.*\)"$/\1/p'
}
kick_chat_member() {
res="$(curl -s "$KICK_URL" -F "chat_id=$1" -F "user_id=$2")"
}
@ -217,6 +251,35 @@ leave_chat() {
res="$(curl -s "$LEAVE_URL" -F "chat_id=$1")"
}
user_is_creator() {
if [ "${1:--}" == "${2:-+}" ] || [ "$(get_chat_member_status "$1" "$2")" == "creator" ]; then return 0; fi
return 1
}
user_is_admin() {
local me; me="$(get_chat_member_status "$1" "$2")"
if [ "${me}" == "creator" ] || [ "${me}" == "administrator" ]; then return 0; fi
return 1
}
user_is_botadmin() {
local admin; admin="$(head -n 1 "${BOTADMIN}")"
[ "${admin}" == "${1}" ] && return 0
[[ "${admin}" == "@*" ]] && [[ "${admin}" == "${2}" ]] && return 0
if [ "${admin}" == "?" ]; then echo "${1:-?}" >"${BOTADMIN}"; return 0; fi
return 1
}
user_is_allowed() {
local acl; acl="$1"
[ "$1" == "" ] && return 1
grep -F -xq "${acl}:*:*" <"${BOTACL}" && return 0
[ "$2" != "" ] && acl="${acl}:$2"
grep -F -xq "${acl}:*" <"${BOTACL}" && return 0
[ "$3" != "" ] && acl="${acl}:$3"
grep -F -xq "${acl}" <"${BOTACL}"
}
answer_inline_query() {
case "$2" in
"article")
@ -549,7 +612,7 @@ case "$1" in
while read -r f; do send_message "${f//COUNT}" "$*"; $sleep; done <"${COUNT}"
;;
"start")
$CLEAR
${CLEAR}
tmux kill-session -t "$ME" &>/dev/null
tmux new-session -d -s "$ME" "bash $SCRIPT startbot" && echo -e "${GREEN}Bot started successfully.${NC}"
echo "Tmux session name $ME" || echo -e "${RED}An error occurred while starting the bot. ${NC}"
@ -570,20 +633,20 @@ case "$1" in
chown -R "$TOUSER" . ./*
chmod 711 .
chmod -R a-w ./*
chmod -R u+w "$COUNT" "$TMPDIR" ./*.log 2>/dev/null
chmod -R o-r,o-w "$COUNT" "$TMPDIR" token 2>/dev/null
chmod -R u+w "${COUNT}" "${TMPDIR}" "${BOTADMIN}" ./*.log 2>/dev/null
chmod -R o-r,o-w "${COUNT}" "${TMPDIR}" "${TOKEN}" "${BOTADMIN}" "${BOTACL}" 2>/dev/null
ls -la
exit
fi
;;
"background" | "resumeback")
$CLEAR
${CLEAR}
echo -e "${GREEN}Restart background processes ...${NC}"
for FILE in "${TMPDIR:-.}/"*-back.cmd; do
if [ "$FILE" == "${TMPDIR:-.}/*-back.cmd" ]; then
if [ "${FILE}" == "${TMPDIR:-.}/*-back.cmd" ]; then
echo -e "${RED}No background processes to start.${NC}"; break
else
RESTART="$(cat "$FILE")"
RESTART="$(< "${FILE}")"
CHAT[ID]="${RESTART%%:*}"
JOB="${RESTART#*:}"
PROG="${JOB#*:}"
@ -598,29 +661,29 @@ case "$1" in
done
;;
"kill")
$CLEAR
${CLEAR}
tmux kill-session -t "$ME" &>/dev/null
send_markdown_message "${CHAT[ID]}" "*Bot stopped*"
echo -e "${GREEN}OK. Bot stopped successfully.${NC}"
;;
"killback" | "suspendback")
$CLEAR
${CLEAR}
echo -e "${GREEN}Stopping background processes ...${NC}"
for FILE in "${TMPDIR:-.}/"*-back.cmd; do
if [ "$FILE" == "${TMPDIR:-.}/*-back.cmd" ]; then
if [ "${FILE}" == "${TMPDIR:-.}/*-back.cmd" ]; then
echo -e "${RED}No background processes.${NC}"; break
else
REMOVE="$(cat "$FILE")"
REMOVE="$(< "${FILE}")"
JOB="${REMOVE#*:}"
fifo="back-${JOB%:*}-${ME}_${REMOVE%%:*}"
echo "killbackground ${fifo}"
[ "$1" == "killback" ] && rm -f "$FILE" # remove job
[ "$1" == "killback" ] && rm -f "${FILE}" # remove job
( tmux kill-session -t "${fifo}"; tmux kill-session -t "sendprocess_${fifo}"; rm -f -r "${TMPDIR:-.}/${fifo}") 2>/dev/null
fi
done
;;
"help")
$CLEAR
${CLEAR}
less "README.txt"
exit
;;

66
commands.sh
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@ -4,10 +4,11 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-1-gdb7b19f
#
# shellcheck disable=SC2154
# shellcheck disable=SC2034
SC2034="$CONTACT" # mute CONTACT not used ;-)
# adjust your language setting here, e.g.when run from other user or cron.
# https://github.com/topkecleon/telegram-bot-bash#setting-up-your-environment
@ -18,6 +19,40 @@ export 'LANGUAGE=C.UTF-8'
unset IFS
# set -f # if you are paranoid use set -f to disable globbing
# change Info anf Help to fit your needs
bashbot_info() {
send_markdown_message "${1}" 'This is bashbot, the Telegram bot written entirely in bash.
It features background tasks and interactive chats, and can serve as an interface for CLI programs.
It currently can send, recieve and forward messages, custom keyboards, photos, audio, voice, documents, locations and video files.
'
}
bashbot_help() {
send_markdown_message "${1}" '*Available commands*:
*• /start*: _Start bot and get this message_.
*• /info*: _Get shorter info message about this bot_.
*• /question*: _Start interactive chat_.
*• /cancel*: _Cancel any currently running interactive chats_.
*• /kickme*: _You will be autokicked from the chat_.
*• /leavechat*: _The bot will leave the group with this command _.
Written by Drew (@topkecleon), Daniil Gentili (@danogentili) and KayM(@gnadelwartz).
Get the code in my [GitHub](http://github.com/topkecleon/telegram-bot-bash)
'
}
# some handy shortcuts, e.g.:
_is_botadmin() {
user_is_botadmin "${USER[ID]}"
}
_is_admin() {
user_is_admin "${CHAT[ID]}" "${USER[ID]}"
}
_is_allowed() { # $1 = resource
user_is_allowed "${USER[ID]}" "$1" "${CHAT[ID]}"
}
if [ "$1" = "source" ];then
# Place the token in the token file
TOKEN="$(cat token)"
@ -92,28 +127,23 @@ else
################################################
# DEFAULT commands start here, edit messages only
'/info')
send_markdown_message "${CHAT[ID]}" "This is bashbot, the *Telegram* bot written entirely in *bash*."
bashbot_info "${CHAT[ID]}"
;;
'/start')
send_action "${CHAT[ID]}" "typing"
send_markdown_message "${CHAT[ID]}" "This is bashbot, the Telegram bot written entirely in bash.
It features background tasks and interactive chats, and can serve as an interface for CLI programs.
It currently can send, recieve and forward messages, custom keyboards, photos, audio, voice, documents, locations and video files.
*Available commands*:
*• /start*: _Start bot and get this message_.
*• /info*: _Get shorter info message about this bot_.
*• /question*: _Start interactive chat_.
*• /cancel*: _Cancel any currently running interactive chats_.
*• /kickme*: _You will be autokicked from the chat_.
*• /leavechat*: _The bot will leave the group with this command _.
Written by Drew (@topkecleon) and Daniil Gentili (@danogentili).
Get the code in my [GitHub](http://github.com/topkecleon/telegram-bot-bash)
"
user_is_botadmin "${USER[ID]}" && send_markdown_message "${CHAT[ID]}" "You are *BOTADMIN*."
if user_is_allowed "${USER[ID]}" "start" "${CHAT[ID]}" ; then
bot_help "${CHAT[ID]}"
else
send_normal_message "${CHAT[ID]}" "You are not allowed to start Bot."
fi
;;
'/leavechat')
send_markdown_message "${CHAT[ID]}" "*LEAVING CHAT...*"
leave_chat "${CHAT[ID]}"
'/leavechat') # bot leave chat if user is admin in chat
if user_is_admin "${CHAT[ID]}" "${USER[ID]}"; then
send_markdown_message "${CHAT[ID]}" "*LEAVING CHAT...*"
leave_chat "${CHAT[ID]}"
fi
;;
'/kickme')

2
doc/1_firstbot.md
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@ -70,5 +70,5 @@ git clone --recursive https://github.com/topkecleon/telegram-bot-bash
```
3. Change to directory ```telegram-bot.bash```, run ```./bashbot.sh init``` and follow the instructions. At this stage you are asked for your Bots token given by botfather.
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

2
doc/2_usage.md
View File

@ -147,6 +147,6 @@ Allowed values: typing for text messages, upload_photo for photos, record_video
send_action "${CHAT[ID]}" "action"
```
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

58
doc/3_advanced.md
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@ -1,5 +1,61 @@
## Advanced Features
### Access control
Bashbot offers functions to check if a has Telegram capabilities like chat admin or chat creator:
```bash
# return true if user is admin/owner of the bot
# -> botadmin is stored in file './botadmin'
user_is_botadmin "user"
# return true if user is creator or admin of a chat
user_is_admin "chat" "user"
# return true if user is creator of a chat or it's a one to one chat
user_is_creator "chat" "user"
# examples:
user_is_botadmin "${USER[ID]}" && send_markdown_message "${CHAT[ID]}" "You are *BOTADMIN*."
user_is_admin "${CHAT[ID]}" "${USER[ID]}" && send_markdown_message "${CHAT[ID]}" "You are *CHATADMIN*."
```
In addtion you can configure individual capabilities for users in the file ```./botacl```:
```bash
# botacl
# if a user is not listed here, function 'user_is_allowed' will always return false
#
# Format:
# user:ressource:chat
# allow user 123456789 access to all resources in all chats
123456789:*:*
# allow user 12131415 to start bot in all chats
12131415:start:*
# allow user 987654321 only to start bot in chat 98979695
987654321:start:98979695
# * are only allowed on the right hand side and not for user!
# the following exaples are NOT valid!
*:*:*
*:start:*
*:*:98979695
```
you have to check yourself if a user is allowed to to something by calling function ```user_is_allowed```.
example to check if a user is allowed to start bot:
```bash
case "$MESSAGE" in
'/start')
user_is_botadmin "${USER[ID]}" && send_markdown_message "${CHAT[ID]}" "You are *BOTADMIN*."
if user_is_allowed "${USER[ID]}" "start" "${CHAT[ID]}" ; then
bot_help "${CHAT[ID]}"
else
send_normal_message "${CHAT[ID]}" "You are not allowed to start Bot."
;;
esac
```
### Interactive Chats
To create interactive chats, write (or edit the question script) a normal bash (or C or python) script, chmod +x it and then change the argument of the startproc function to match the command you usually use to start the script.
The text that the script will output will be sent in real time to the user, and all user input will be sent to the script (as long as it's running or until the user kills it with /cancel).
@ -97,5 +153,5 @@ To send stickers through an *inline query*:
answer_inline_query "$iQUERY_ID" "cached_sticker" "identifier for the sticker"
```
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

2
doc/4_expert.md
View File

@ -102,5 +102,5 @@ An example crontab is provided in ```bashbot.cron```.
- if you run bashbot as an other user or a system service edit ```bashbot.cron``` to fit your needs and replace username```nobody``` with the username you want to run bashbot. copy the modified file to ```/etc/cron.d/bashbot```
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

25
doc/5_practice.md
View File

@ -1,8 +1,8 @@
## Best Practices
### Customizing commands.sh
To ease Updates never change ```bashbot.sh```, all changes should be done in ```commands.sh``` .
To ease Updates never change ```bashbot.sh```, all changes should be done in ```commands.sh``` .
Insert your own Bot commands in the ```case ... esac``` block in commands.sh:
```bash
case "$MESSAGE" in
@ -13,20 +13,18 @@ Insert your own Bot commands in the ```case ... esac``` block in commands.sh:
################################################
# DEFAULT commands start here, edit messages only
'/info')
send_markdown_message "${CHAT[ID]}" "This is bashbot, the *Telegram* bot written entirely in *bash*."
bashbot_info "${CHAT[ID]}"
;;
'/start')
send_action "${CHAT[ID]}" "typing"
send_markdown_message "${CHAT[ID]}" "This is bashbot, the Telegram bot written entirely in bash."
;;
[...]
esac
```
after editing commands.sh restart Bot.
### Seperate Bot logic from command
If a Bot command needs more than 2-3 lines of code I recommend to factor it out to a bash function in a seperate file, e.g.
```mybotcommands.inc.sh``` and source the file from bashbot.sh.
```mybotcommands.inc.sh``` and source the file from bashbot.sh. ```bashbot_info and bashbot_help``` are examples how to use
bash functions to make customisation easy and keep case block small. ```process_message``` is an example for a complex
processing logic as a bash funtcion in a seperate file.
```bash
source mybotcommands.inc.sh
@ -38,16 +36,15 @@ If a Bot command needs more than 2-3 lines of code I recommend to factor it out
################################################
# DEFAULT commands start here, edit messages only
'/info')
send_markdown_message "${CHAT[ID]}" "This is bashbot, the *Telegram* bot written entirely in *bash*."
bashbot_info "${CHAT[ID]}"
;;
'/start')
send_action "${CHAT[ID]}" "typing"
send_markdown_message "${CHAT[ID]}" "This is bashbot, the Telegram bot written entirely in bash."
bashbot_help "${CHAT[ID]}"
;;
#[...]
esac
```
Doing it this way keeps commands.sh small and clean, while allowing complex tasks to be done in the included function. example ```mybotcommands.inc.sh```:
Example ```mybotcommands.inc.sh```:
```bash
#!/bin/bash
#
@ -79,10 +76,10 @@ process_message() {
}
```
Doing it this way keeps commands.sh small and clean, while allowing complex tasks to be done in the included function.
### Test your Bot with shellcheck
Shellcheck is a static linter for shell scripts providing excellent tips and hints for shell coding pittfalls. You can [use it online](https://www.shellcheck.net/) or [install it on your system](https://github.com/koalaman/shellcheck#installing).
All bashbot scripts are linted by shellcheck.
Shellcheck examples:
@ -114,5 +111,5 @@ In bashbot.sh line 490:
```
As you can see there are only two warnings in bashbots scripts. The first is a hint you may use shell substitions instead of sed, but this is only possible for simple cases. The second warning is about an unused variable, this is true because in our examples CONTACT is not used but assigned in case you want to use it :-)
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f

2
notify
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@ -2,7 +2,7 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
# adjust your language setting here
# https://github.com/topkecleon/telegram-bot-bash#setting-up-your-environment

2
question
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@ -3,7 +3,7 @@
# This file is public domain in the USA and all free countries.
# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
# adjust your language setting here
# https://github.com/topkecleon/telegram-bot-bash#setting-up-your-environment

5
version
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@ -1,6 +1,6 @@
#!/bin/bash
#
#### $$VERSION$$ v0.51-0-g0356270
#### $$VERSION$$ v0.52-0-gdb7b19f
# shellcheck disable=SC2016
#
# Easy Versioning in git:
@ -47,5 +47,8 @@ do
echo -n " $file"
sed -i 's/^#### $$VERSION$$.*/#### \$\$VERSION\$\$ '"$VERSION"'/' "$file"
done
# try to compile README.txt
echo -n " README.txt"
pandoc -f markdown -t asciidoc README.md | sed '/^\[\[/d' >README.txt
echo " done."