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Move filesystem to more generic name & add perms
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25
install/production-filesystem/services/capcheck.sh
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25
install/production-filesystem/services/capcheck.sh
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@@ -0,0 +1,25 @@
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#!/bin/sh
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# check_nmap_caps.sh - Uses a real nmap command to detect missing container
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# privileges and warns the user. It is silent on success.
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# Run a fast nmap command that requires raw sockets, capturing only stderr.
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ERROR_OUTPUT=$(nmap --privileged -sS -p 20211 127.0.0.1 2>&1 >/dev/null)
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EXIT_CODE=$?
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# If the exit code is exactly 126 AND the error message contains a known permission error...
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if [ "$EXIT_CODE" -eq 126 ] && \
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echo "$ERROR_OUTPUT" | grep -q -e "Operation not permitted" -e "requires root privileges"
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then
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# ...then print the detailed warning.
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echo "⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️" >&2
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echo " ATTENTION: This container is running without elevated" >&2
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echo " network privileges (NET_RAW/NET_ADMIN)." >&2
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echo "" >&2
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echo " Advanced network tools that require raw socket access," >&2
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echo " like 'nmap -sS', will fail." >&2
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echo "" >&2
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echo " To fix this, restart the container with the following flags:" >&2
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echo " --cap-add=NET_RAW --cap-add=NET_ADMIN" >&2
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echo "⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️" >&2
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exit 1
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fi
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