#!/bin/sh

logit "\n"
info "2 - Docker Daemon Configuration"

# 2.1
check_2_1="2.1  - Restrict network traffic between containers"
get_docker_effective_command_line_args '--icc' | grep "false" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_1"
else
  warn "$check_2_1"
fi

# 2.2
check_2_2="2.2  - Set the logging level"
get_docker_effective_command_line_args '-l' >/dev/null 2>&1
if [ $? -eq 0 ]; then
  get_docker_effective_command_line_args '-l' | grep "info" >/dev/null 2>&1
  if [ $? -eq 0 ]; then
    pass "$check_2_2"
  else
    warn "$check_2_2"
  fi
else
  pass "$check_2_2"
fi

# 2.3
check_2_3="2.3  - Allow Docker to make changes to iptables"
get_docker_effective_command_line_args '--iptables' | grep "false" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  warn "$check_2_3"
else
  pass "$check_2_3"
fi

# 2.4
check_2_4="2.4  - Do not use insecure registries"
get_docker_effective_command_line_args '--insecure-registry' | grep "insecure-registry" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  warn "$check_2_4"
else
  pass "$check_2_4"
fi

# 2.5
check_2_5="2.5  - Do not use the aufs storage driver"
docker info 2>/dev/null | grep -e "^Storage Driver:\s*aufs\s*$" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  warn "$check_2_5"
else
  pass "$check_2_5"
fi

# 2.6
check_2_6="2.6  - Configure TLS authentication for Docker daemon"
get_docker_cumulative_command_line_args '-H' | grep -vE '(unix|fd)://' >/dev/null 2>&1
if [ $? -eq 0 ]; then
  get_docker_cumulative_command_line_args '--tlskey' | grep 'tlskey=' >/dev/null 2>&1
  if [ $? -eq 0 ]; then
    get_docker_cumulative_command_line_args '--tlsverify' | grep 'tlsverify' >/dev/null 2>&1
    if [ $? -eq 0 ]; then
      pass "$check_2_6"
      #pass "     * Docker daemon currently listening on TCP with TLS and verification"
    else
      warn "$check_2_6"
      warn "     * Docker daemon currently listening on TCP with TLS, but no verification"
    fi
  else
    warn "$check_2_6"
    warn "     * Docker daemon currently listening on TCP without TLS"
  fi
else
  info "$check_2_6"
  info "     * Docker daemon not listening on TCP"
fi


# 2.7
check_2_7="2.7 - Set default ulimit as appropriate"
get_docker_effective_command_line_args '--default-ulimit' | grep "default-ulimit" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_7"
else
  info "$check_2_7"
  info "     * Default ulimit doesn't appear to be set"
fi

# 2.8
check_2_8="2.8  - Enable user namespace support"
get_docker_effective_command_line_args '--userns-remap' | grep "userns-remap" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_8"
else
  warn "$check_2_8"
fi

# 2.9
check_2_9="2.9  - Confirm default cgroup usage"
get_docker_effective_command_line_args '--cgroup-parent' | grep "cgroup-parent" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  info "$check_2_9"
  info "     * Confirm cgroup usage"
else
  pass "$check_2_9"
fi

# 2.10
check_2_10="2.10 - Do not change base device size until needed"
get_docker_effective_command_line_args '--storage-opt' | grep "dm.basesize" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  warn "$check_2_10"
else
  pass "$check_2_10"
fi

# 2.11
check_2_11="2.11 - Use authorization plugin"
get_docker_effective_command_line_args '--authorization-plugin' | grep "authorization-plugin" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_11"
else
  warn "$check_2_11"
fi

# 2.12
check_2_12="2.12 - Configure centralized and remote logging"
get_docker_effective_command_line_args '--log-driver' | grep "log-driver" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_12"
else
  warn "$check_2_12"
fi

# 2.13
check_2_13="2.13 - Disable operations on legacy registry (v1)"
get_docker_effective_command_line_args '--disable-legacy-registry' | grep "disable-legacy-registry" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_13"
else
  warn "$check_2_13"
fi

# 2.14
check_2_14="2.14 - Enable live restore"
get_docker_effective_command_line_args '--live-restore' 2>/dev/null | grep "live-restore" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_14"
else
  if docker info 2>/dev/null | grep -e "Swarm:\s*active\s*" >/dev/null 2>&1; then
    pass "$check_2_14 (Incompatible with swarm mode)"
  else
    warn "$check_2_14"
  fi
fi

# 2.15
check_2_15="2.15 - Do not enable swarm mode, if not needed"
docker info 2>/dev/null | grep -e "Swarm:\s*active\s*" >/dev/null 2>&1
if [ $? -eq 1 ]; then
  pass "$check_2_15"
else
  warn "$check_2_15"
fi

# 2.16
check_2_16="2.16 - Control the number of manager nodes in a swarm"
if docker info 2>/dev/null | grep -e "Swarm:\s*active\s*" >/dev/null 2>&1; then
  managernodes=$(docker node ls | grep "Leader" | wc -l)
  if [ $managernodes -le 1 ]; then
    pass "$check_2_16"
  else
    warn "$check_2_16"
  fi
else
  pass "$check_2_16 (Swarm mode not enabled)"
fi

# 2.17
check_2_17="2.17 - Bind swarm services to a specific host interface"
netstat -lt 2>/dev/null | grep -i 2377 >/dev/null 2>&1
if [ $? -eq 1 ]; then
  pass "$check_2_17"
else
  warn "$check_2_17"
fi

# 2.18
check_2_18="2.18 - Disable Userland Proxy"
get_docker_effective_command_line_args '--userland-proxy=false' 2>/dev/null | grep "userland-proxy=false" >/dev/null 2>&1
if [ $? -eq 0 ]; then
  pass "$check_2_18"
else
  warn "$check_2_18"
fi