Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

flatcar-update: Replace ncat with socat #124

Merged
merged 1 commit into from
Aug 9, 2024
Merged

flatcar-update: Replace ncat with socat #124

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
28 changes: 26 additions & 2 deletions bin/flatcar-update
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -267,12 +267,36 @@ tee -a /tmp/response > /dev/null <<-EOF
</updatecheck><event status="ok"></event></app></response>
EOF

# Cleanups for local socat servers below

true > /tmp/payload-server-pids
trap "umount /usr/share/update_engine/update-payload-key.pub.pem 2> /dev/null || true; rm -f /tmp/response /tmp/payload-server ; cat /tmp/payload-server-pids | xargs -r kill ; rm -f /tmp/payload-server-pids" EXIT INT
ncat --keep-open -c "echo -en 'HTTP/1.1 200 OK\ncontent-type: text/xml\ncontent-length: $(stat --printf='%s\n' /tmp/response)\n\n'; cat /tmp/response" -l "$LISTEN_PORT_1" &
trap "umount /usr/share/update_engine/update-payload-key.pub.pem 2> /dev/null || true ; cat /tmp/payload-server-pids | xargs -r kill ; rm -f /tmp/response /tmp/payload-server /tmp/response-server /tmp/payload-server-pids" EXIT INT


# Setup for XML response server

# Helper script because inline quoting is insane
tee /tmp/response-server > /dev/null <<'EOF'
#!/bin/bash
set -euo pipefail
read -a WORDS
if [[ ${#WORDS[@]} -ne 3 ]] || [[ ${WORDS[0]} != POST ]] || [[ ${WORDS[1]} != /update ]] ; then
echo -ne "HTTP/1.1 400 Bad request\r\n\r\n"; exit 0
fi
echo -ne "HTTP/1.1 200 OK\r\n"
echo -ne "Content-Type: text/xml\r\n"
LEN=$(stat --printf='%s\n' /tmp/response)
echo -ne "Content-Length: ${LEN}\r\n"
echo -ne "\r\n"
cat /tmp/response
EOF

chmod +x /tmp/response-server
socat TCP-LISTEN:"${LISTEN_PORT_1}",reuseaddr,fork SYSTEM:'/tmp/response-server' &
CHILDPID="$!"
echo "${CHILDPID}" >> /tmp/payload-server-pids

# Setup for payload server

# Helper script because inline quoting is insane
tee /tmp/payload-server > /dev/null <<'EOF'
Expand Down