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[24.0 backport] Fixing dockerd-rootless-setuptools.sh when user name contains a backslash #46407

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merged 1 commit into from Sep 6, 2023
Merged

[24.0 backport] Fixing dockerd-rootless-setuptools.sh when user name contains a backslash #46407

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21 changes: 14 additions & 7 deletions contrib/dockerd-rootless-setuptool.sh
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Expand Up @@ -37,6 +37,8 @@ BIN=""
SYSTEMD=""
CFG_DIR=""
XDG_RUNTIME_DIR_CREATED=""
USERNAME=""
USERNAME_ESCAPED=""

# run checks and also initialize global vars
init() {
Expand Down Expand Up @@ -78,6 +80,11 @@ init() {
exit 1
fi

# Set USERNAME from `id -un` and potentially protect backslash
# for windbind/samba domain users
USERNAME=$(id -un)
USERNAME_ESCAPED=$(echo $USERNAME | sed 's/\\/\\\\/g')

# set CFG_DIR
CFG_DIR="${XDG_CONFIG_HOME:-$HOME/.config}"

Expand Down Expand Up @@ -222,21 +229,21 @@ init() {
fi

# instructions: validate subuid/subgid files for current user
if ! grep -q "^$(id -un):\|^$(id -u):" /etc/subuid 2> /dev/null; then
if ! grep -q "^$USERNAME_ESCAPED:\|^$(id -u):" /etc/subuid 2> /dev/null; then
instructions=$(
cat <<- EOI
${instructions}
# Add subuid entry for $(id -un)
echo "$(id -un):100000:65536" >> /etc/subuid
# Add subuid entry for ${USERNAME}
echo "${USERNAME}:100000:65536" >> /etc/subuid
EOI
)
fi
if ! grep -q "^$(id -un):\|^$(id -u):" /etc/subgid 2> /dev/null; then
if ! grep -q "^$USERNAME_ESCAPED:\|^$(id -u):" /etc/subgid 2> /dev/null; then
instructions=$(
cat <<- EOI
${instructions}
# Add subgid entry for $(id -un)
echo "$(id -un):100000:65536" >> /etc/subgid
# Add subgid entry for ${USERNAME}
echo "${USERNAME}:100000:65536" >> /etc/subgid
EOI
)
fi
Expand Down Expand Up @@ -340,7 +347,7 @@ install_systemd() {
)
INFO "Installed ${SYSTEMD_UNIT} successfully."
INFO "To control ${SYSTEMD_UNIT}, run: \`systemctl --user (start|stop|restart) ${SYSTEMD_UNIT}\`"
INFO "To run ${SYSTEMD_UNIT} on system startup, run: \`sudo loginctl enable-linger $(id -un)\`"
INFO "To run ${SYSTEMD_UNIT} on system startup, run: \`sudo loginctl enable-linger ${USERNAME}\`"
echo
}

Expand Down