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Support .mobileconfig for IKEv2

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- New feature: For macOS and iOS clients, the IKEv2 helper script
  can now create .mobileconfig files to simplify client setup
  and improve VPN performance with ciphers such as AES-GCM.
- New feature: VPN On Demand is now supported on macOS and iOS.
  See https://git.io/ikev2 for more details.
- The script no longer exports the IKEv2 VPN CA certificate, since
  .mobileconfig support has been added.
- A random password is now generated for the .p12 and .mobileconfig
  files, and displayed on the screen when finished. User input is
  no longer required for this password.
This commit is contained in:
hwdsl2 2021-01-14 23:21:52 -06:00
parent 91b7e53004
commit b004aaaf7c
1 changed files with 217 additions and 51 deletions
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268
extras/ikev2setup.sh
View File

@ -30,6 +30,195 @@ check_dns_name() {
printf '%s' "$1" | tr -d '\n' | grep -Eq "$FQDN_REGEX"
}
create_mobileconfig() {
bigecho2 "Creating .mobileconfig for iOS and macOS..."
[ -z "$p12_password" ] && exiterr "Password for .p12 file cannot be empty."
if [ -z "$server_addr" ]; then
server_addr=$(grep "leftcert=" /etc/ipsec.d/ikev2.conf | cut -f2 -d=)
[ -z "$server_addr" ] && server_addr=$(grep "leftcert=" /etc/ipsec.conf | cut -f2 -d=)
check_ip "$server_addr" || check_dns_name "$server_addr" || exiterr "Could not get VPN server address."
fi
if ! command -v base64 >/dev/null 2>&1 || ! command -v uuidgen >/dev/null 2>&1; then
if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
export DEBIAN_FRONTEND=noninteractive
apt-get -yqq update || exiterr "'apt-get update' failed."
apt-get -yqq install coreutils uuid-runtime || exiterr "'apt-get install' failed."
else
yum -yq install coreutils util-linux || exiterr "'yum install' failed."
fi
fi
if [ "$in_container" = "0" ]; then
p12_base64=$(base64 -w 52 ~/"$client_name-$SYS_DT.p12")
else
p12_base64=$(base64 -w 52 "/etc/ipsec.d/$client_name-$SYS_DT.p12")
fi
[ -z "$p12_base64" ] && exiterr "Could not encode .p12 file."
ca_base64=$(certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" -a | grep -v CERTIFICATE)
[ -z "$ca_base64" ] && exiterr "Could not encode IKEv2 VPN CA certificate."
uuid1=$(uuidgen)
[ -z "$uuid1" ] && exiterr "Could not generate UUID value."
if [ "$in_container" = "0" ]; then
mc_file=~/"$client_name-$SYS_DT.mobileconfig"
else
mc_file="/etc/ipsec.d/$client_name-$SYS_DT.mobileconfig"
fi
cat > "$mc_file" <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>PayloadContent</key>
<array>
<dict>
<key>IKEv2</key>
<dict>
<key>AuthenticationMethod</key>
<string>Certificate</string>
<key>ChildSecurityAssociationParameters</key>
<dict>
<key>DiffieHellmanGroup</key>
<integer>14</integer>
<key>EncryptionAlgorithm</key>
<string>AES-256-GCM</string>
<key>LifeTimeInMinutes</key>
<integer>1440</integer>
</dict>
<key>DeadPeerDetectionRate</key>
<string>Medium</string>
<key>DisableRedirect</key>
<true/>
<key>EnableCertificateRevocationCheck</key>
<integer>0</integer>
<key>EnablePFS</key>
<integer>0</integer>
<key>IKESecurityAssociationParameters</key>
<dict>
<key>DiffieHellmanGroup</key>
<integer>14</integer>
<key>EncryptionAlgorithm</key>
<string>AES-256</string>
<key>IntegrityAlgorithm</key>
<string>SHA2-256</string>
<key>LifeTimeInMinutes</key>
<integer>1440</integer>
</dict>
<key>LocalIdentifier</key>
<string>$client_name</string>
<key>PayloadCertificateUUID</key>
<string>$uuid1</string>
<key>OnDemandEnabled</key>
<integer>0</integer>
<key>OnDemandRules</key>
<array>
<dict>
<key>Action</key>
<string>Connect</string>
</dict>
</array>
<key>RemoteAddress</key>
<string>$server_addr</string>
<key>RemoteIdentifier</key>
<string>$server_addr</string>
<key>UseConfigurationAttributeInternalIPSubnet</key>
<integer>0</integer>
</dict>
<key>IPv4</key>
<dict>
<key>OverridePrimary</key>
<integer>1</integer>
</dict>
<key>PayloadDescription</key>
<string>Configures VPN settings</string>
<key>PayloadDisplayName</key>
<string>VPN</string>
<key>PayloadIdentifier</key>
<string>com.apple.vpn.managed.$(uuidgen)</string>
<key>PayloadType</key>
<string>com.apple.vpn.managed</string>
<key>PayloadUUID</key>
<string>$(uuidgen)</string>
<key>PayloadVersion</key>
<integer>1</integer>
<key>Proxies</key>
<dict>
<key>HTTPEnable</key>
<integer>0</integer>
<key>HTTPSEnable</key>
<integer>0</integer>
</dict>
<key>UserDefinedName</key>
<string>$server_addr</string>
<key>VPNType</key>
<string>IKEv2</string>
</dict>
<dict>
<key>PayloadCertificateFileName</key>
<string>$client_name</string>
<key>PayloadContent</key>
<data>
$p12_base64
</data>
<key>PayloadDescription</key>
<string>Adds a PKCS#12-formatted certificate</string>
<key>PayloadDisplayName</key>
<string>$client_name</string>
<key>PayloadIdentifier</key>
<string>com.apple.security.pkcs12.$(uuidgen)</string>
<key>PayloadType</key>
<string>com.apple.security.pkcs12</string>
<key>PayloadUUID</key>
<string>$uuid1</string>
<key>PayloadVersion</key>
<integer>1</integer>
</dict>
<dict>
<key>PayloadContent</key>
<data>
$ca_base64
</data>
<key>PayloadCertificateFileName</key>
<string>ikev2vpnca</string>
<key>PayloadDescription</key>
<string>Adds a CA root certificate</string>
<key>PayloadDisplayName</key>
<string>Certificate Authority (CA)</string>
<key>PayloadIdentifier</key>
<string>com.apple.security.root.$(uuidgen)</string>
<key>PayloadType</key>
<string>com.apple.security.root</string>
<key>PayloadUUID</key>
<string>$(uuidgen)</string>
<key>PayloadVersion</key>
<integer>1</integer>
</dict>
</array>
<key>PayloadDisplayName</key>
<string>IKEv2 VPN configuration ($server_addr)</string>
<key>PayloadIdentifier</key>
<string>com.apple.vpn.managed.$(uuidgen)</string>
<key>PayloadRemovalDisallowed</key>
<false/>
<key>PayloadType</key>
<string>Configuration</string>
<key>PayloadUUID</key>
<string>$(uuidgen)</string>
<key>PayloadVersion</key>
<integer>1</integer>
</dict>
</plist>
EOF
}
new_client() {
bigecho2 "Generating client certificate..."
@ -44,31 +233,18 @@ new_client() {
--keyUsage digitalSignature,keyEncipherment \
--extKeyUsage serverAuth,clientAuth -8 "$client_name" >/dev/null || exit 1
if [ "$export_ca" = "1" ]; then
bigecho "Exporting CA certificate 'IKEv2 VPN CA'..."
if [ "$in_container" = "0" ]; then
certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" -a -o ~/"ikev2vpnca-$SYS_DT.cer" || exit 1
else
certutil -L -d sql:/etc/ipsec.d -n "IKEv2 VPN CA" -a -o "/etc/ipsec.d/ikev2vpnca-$SYS_DT.cer" || exit 1
fi
fi
bigecho "Exporting .p12 file..."
cat <<'EOF'
Enter a *secure* password to protect the exported .p12 file.
This file contains the client certificate, private key, and CA certificate.
When importing into an iOS or macOS device, this password cannot be empty.
EOF
p12_password=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' < /dev/urandom | head -c 16)
[ -z "$p12_password" ] && exiterr "Could not generate a random password for .p12 file."
if [ "$in_container" = "0" ]; then
pk12util -d sql:/etc/ipsec.d -n "$client_name" -o ~/"$client_name-$SYS_DT.p12" || exit 1
pk12util -W "$p12_password" -d sql:/etc/ipsec.d -n "$client_name" -o ~/"$client_name-$SYS_DT.p12" || exit 1
else
pk12util -d sql:/etc/ipsec.d -n "$client_name" -o "/etc/ipsec.d/$client_name-$SYS_DT.p12" || exit 1
pk12util -W "$p12_password" -d sql:/etc/ipsec.d -n "$client_name" -o "/etc/ipsec.d/$client_name-$SYS_DT.p12" || exit 1
fi
create_mobileconfig
}
ikev2setup() {
@ -181,25 +357,12 @@ if grep -qs "conn ikev2-cp" /etc/ipsec.conf || [ -f /etc/ipsec.d/ikev2.conf ]; t
[ -z "$client_validity" ] && client_validity=120
done
echo
echo "The CA certificate was exported during initial IKEv2 setup. Required for iOS clients only."
printf "Do you want to export the CA certificate again? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
export_ca=1
;;
*)
export_ca=0
;;
esac
# Create client configuration
new_client
cat <<EOF
=============================================================
===============================================================
New IKEv2 VPN client "$client_name" added!
@ -208,25 +371,25 @@ Client configuration is available at:
EOF
if [ "$in_container" = "0" ]; then
printf '%s\n' ~/"$client_name-$SYS_DT.p12"
if [ "$export_ca" = "1" ]; then
printf '%s\n' ~/"ikev2vpnca-$SYS_DT.cer (for iOS clients)"
fi
printf '%s\n' ~/"$client_name-$SYS_DT.p12 (for Windows & Android)"
printf '%s\n' ~/"$client_name-$SYS_DT.mobileconfig (for iOS & macOS)"
else
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.p12"
if [ "$export_ca" = "1" ]; then
printf '%s\n' "/etc/ipsec.d/ikev2vpnca-$SYS_DT.cer (for iOS clients)"
fi
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.p12 (for Windows & Android)"
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.mobileconfig (for iOS & macOS)"
fi
cat <<'EOF'
cat <<EOF
(Important) Password for .p12 and .mobileconfig files:
$p12_password
Write this down, you'll need it to import to your device!
Next steps: Configure IKEv2 VPN clients. See:
https://git.io/ikev2clients
To add more IKEv2 VPN clients, run this script again.
=============================================================
===============================================================
EOF
@ -503,7 +666,6 @@ else
fi
# Create client configuration
export_ca=1
new_client
echo
@ -580,7 +742,7 @@ service ipsec restart
cat <<EOF
=============================================================
===============================================================
IKEv2 VPN setup is now complete!
@ -592,21 +754,25 @@ Client configuration is available at:
EOF
if [ "$in_container" = "0" ]; then
printf '%s\n' ~/"$client_name-$SYS_DT.p12"
printf '%s\n' ~/"ikev2vpnca-$SYS_DT.cer (for iOS clients)"
printf '%s\n' ~/"$client_name-$SYS_DT.p12 (for Windows & Android)"
printf '%s\n' ~/"$client_name-$SYS_DT.mobileconfig (for iOS & macOS)"
else
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.p12"
printf '%s\n' "/etc/ipsec.d/ikev2vpnca-$SYS_DT.cer (for iOS clients)"
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.p12 (for Windows & Android)"
printf '%s\n' "/etc/ipsec.d/$client_name-$SYS_DT.mobileconfig (for iOS & macOS)"
fi
cat <<'EOF'
cat <<EOF
(Important) Password for .p12 and .mobileconfig files:
$p12_password
Write this down, you'll need it to import to your device!
Next steps: Configure IKEv2 VPN clients. See:
https://git.io/ikev2clients
To add more IKEv2 VPN clients, run this script again.
=============================================================
===============================================================
EOF