41 lines
1.7 KiB
Bash
41 lines
1.7 KiB
Bash
#!/usr/bin/env bash
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# Bash completion support for ssh.
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export COMP_WORDBREAKS=${COMP_WORDBREAKS/\:/}
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_sshcomplete() {
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local CURRENT_PROMPT="${COMP_WORDS[COMP_CWORD]}"
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if [[ ${CURRENT_PROMPT} == *@* ]] ; then
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local OPTIONS="-P ${CURRENT_PROMPT/@*/}@ -- ${CURRENT_PROMPT/*@/}"
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else
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local OPTIONS=" -- ${CURRENT_PROMPT}"
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fi
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# Parse defined hosts from all ssh configuration files (taking "Include" directives into consideration).
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# The solution relies on ssh printing the configuration files paths in verbose mode.
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#
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# We try to connect to localhost on port 4, which is reserved and should be unused.
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# In case there is an ssh server listening on that port, we ask ssh to "do nothing" by executing "echo" remotely.
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config_files="$(ssh -v 127.0.0.1 -p 4 echo 2>&1 | sed -n '/Reading configuration data/ s/.*Reading configuration data \([^\r]*\).*/\1/gp')"
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for file in $config_files
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do
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COMPREPLY=(${COMPREPLY[@]} $(compgen -W "$(grep ^Host "${file}" | awk '{for (i=2; i<=NF; i++) print $i}' )" ${OPTIONS}) )
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done
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# parse all hosts found in .ssh/known_hosts
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if [ -r "$HOME/.ssh/known_hosts" ]; then
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if grep -v -q -e '^ ssh-rsa' "$HOME/.ssh/known_hosts" ; then
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COMPREPLY=( ${COMPREPLY[@]} $(compgen -W "$( awk '{print $1}' "$HOME/.ssh/known_hosts" | grep -v ^\| | cut -d, -f 1 | sed -e 's/\[//g' | sed -e 's/\]//g' | cut -d: -f1 | grep -v ssh-rsa)" ${OPTIONS}) )
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fi
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fi
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# parse hosts defined in /etc/hosts
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if [ -r /etc/hosts ]; then
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COMPREPLY=( ${COMPREPLY[@]} $(compgen -W "$( grep -v '^[[:space:]]*$' /etc/hosts | grep -v '^#' | awk '{for (i=2; i<=NF; i++) print $i}' )" ${OPTIONS}) )
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fi
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return 0
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}
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complete -o default -o nospace -F _sshcomplete ssh scp
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