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[Unit]
Description=Bitwarden Server (Rust Edition)
Documentation=https://github.com/dani-garcia/bitwarden_rs
After=network.target

[Service]
# The user/group bitwarden_rs is run under. the working directory (see below) should allow write and read access to this user/group
User=bitwarden_rs
Group=bitwarden_rs

# The location of the .env file for configuration
EnvironmentFile=/etc/bitwarden_rs.env

# The location of the compiled binary
ExecStart=/usr/bin/bitwarden_rs

# Set reasonable connection and process limits
LimitNOFILE=1048576
LimitNPROC=64

# Only allow writes to the following directory and set it to the working directory (user and password data are stored here)
WorkingDirectory=/var/lib/bitwarden_rs
ReadWritePaths=/var/lib/bitwarden_rs

# Prevent bitwarden_rs from doing anything stupid and/or unneccessary.
LockPersonality=yes
MemoryDenyWriteExecute=yes
NoNewPrivileges=yes

PrivateTmp=yes
PrivateDevices=yes

ProtectHome=yes
ProtectSystem=strict
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectKernelLogs=yes
ProtectControlGroups=yes
ProtectHostname=yes
ProtectClock=yes

RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes

RemoveIPC=yes
UMask=0077

SystemCallArchitectures=native
SystemCallFilter=@system-service
SystemCallFilter=~@resources
SystemCallFilter=~@privileged

# Allow bitwarden_rs to bind ports in the range of 0-1024
AmbientCapabilities=CAP_NET_BIND_SERVICE
# Restrict bitwarden_rs to only this capability
CapabilityBoundingSet=CAP_NET_BIND_SERVICE

# If bitwarden_rs is run at ports >1024, you can enable (remove the leading '#' of)
# the following lines:
#PrivateUsers=yes
#CapabilityBoundingSet=
#AmbientCapabilities=

[Install]
WantedBy=multi-user.target