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1 | 1 | #!/bin/sh |
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2 | 2 | # Setup fstab and initramfs |
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3 | 3 | # |
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4 | 4 | |
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5 | 5 | # Load utility functions |
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6 | 6 | . ./functions.sh |
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7 | 7 | |
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8 | 8 | # Install and setup fstab |
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9 | 9 | install_readonly files/mount/fstab "${ETC_DIR}/fstab" |
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10 | 10 | |
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11 | 11 | # Add usb/sda disk root partition to fstab |
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12 | 12 | if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_CRYPTFS" = false ] ; then |
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13 | 13 | sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab" |
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14 | 14 | fi |
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15 | 15 | |
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16 | 16 | if [ "$ENABLE_USBBOOT" = true ] ; then |
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17 | 17 | sed -i "s/mmcblk0p1/sda1/" "${ETC_DIR}/fstab" |
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18 | 18 | sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/fstab" |
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19 | 19 | fi |
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20 | 20 | |
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21 | 21 | # Generate initramfs file |
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22 | 22 | if [ "$ENABLE_INITRAMFS" = true ] ; then |
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23 | 23 | if [ "$ENABLE_CRYPTFS" = true ] ; then |
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24 | 24 | if [ "$ENABLE_USBBOOT" = true ] ; then |
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25 | 25 | # Add usb/sda2 disk to crypttab |
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26 | 26 | sed -i "s/mmcblk0p2/sda2/" "${ETC_DIR}/crypttab" |
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27 | 27 | fi |
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28 | 28 | |
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29 | 29 | # Include initramfs scripts to auto expand encrypted root partition |
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30 | 30 | if [ "$EXPANDROOT" = true ] ; then |
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31 | 31 | install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs" |
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32 | 32 | install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount" |
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33 | 33 | install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools" |
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34 | 34 | fi |
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35 | 35 | |
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36 | 36 | # Replace fstab root partition with encrypted partition mapping |
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37 | 37 | sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab" |
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38 | 38 | |
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39 | 39 | # Add encrypted partition to crypttab and fstab |
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40 | 40 | install_readonly files/mount/crypttab "${ETC_DIR}/crypttab" |
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41 | 41 | echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks,initramfs" >> "${ETC_DIR}/crypttab" |
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42 | 42 | |
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43 | 43 | # Add encrypted root partition to fstab and crypttab |
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44 | 44 | if [ "$ENABLE_SPLITFS" = true ] ; then |
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45 | 45 | # Add usb/sda1 disk to crypttab |
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46 | 46 | sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab" |
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47 | 47 | fi |
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48 | 48 | |
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49 | 49 | if [ "$CRYPTFS_DROPBEAR" = true ]; then |
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50 | 50 | if [ "$ENABLE_DHCP" = false ] ; then |
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51 | 51 | # Get cdir from NET_ADDRESS e.g. 24 |
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52 | 52 | cdir=$(printf "%s" "${NET_ADDRESS}" | cut -d '/' -f2) |
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53 | 53 | |
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54 | 54 | # Convert cdir ro netmask e.g. 24 to 255.255.255.0 |
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55 | 55 | NET_MASK=$(cdr2mask "$cdir") |
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56 | 56 | |
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57 | 57 | # Write static ip settings to "${ETC_DIR}"/initramfs-tools/initramfs.conf |
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58 | 58 | sed -i "\$aIP=${NET_ADDRESS}::${NET_GATEWAY}:${NET_MASK}:${HOSTNAME}:" "${ETC_DIR}"/initramfs-tools/initramfs.conf |
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59 | 59 | |
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60 | 60 | #Regenerate initramfs |
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61 | 61 | chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" |
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62 | 62 | fi |
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63 | 63 | |
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64 | 64 | if [ -n "$CRYPTFS_DROPBEAR_PUBKEY" ] && [ -f "$CRYPTFS_DROPBEAR_PUBKEY" ] ; then |
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65 | 65 | install_readonly "${CRYPTFS_DROPBEAR_PUBKEY}" "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub |
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66 | 66 | cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub >> "${ETC_DIR}"/dropbear-initramfs/authorized_keys |
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67 | 67 | else |
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68 | 68 | # Create key |
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69 | 69 | chroot_exec /usr/bin/dropbearkey -t rsa -f /etc/dropbear-initramfs/id_rsa.dropbear |
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70 | 70 | |
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71 | 71 | # Convert dropbear key to openssh key |
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72 | 72 | chroot_exec /usr/lib/dropbear/dropbearconvert dropbear openssh /etc/dropbear-initramfs/id_rsa.dropbear /etc/dropbear-initramfs/id_rsa |
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73 | 73 | |
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74 | 74 | # Get Public Key Part |
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75 | 75 | chroot_exec /usr/bin/dropbearkey -y -f /etc/dropbear-initramfs/id_rsa.dropbear | chroot_exec tee /etc/dropbear-initramfs/id_rsa.pub |
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76 | 76 | |
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77 | 77 | # Delete unwanted lines |
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78 | 78 | sed -i '/Public/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub |
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79 | 79 | sed -i '/Fingerprint/d' "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub |
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80 | 80 | |
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81 | 81 | # Trust the new key |
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82 | 82 | cat "${ETC_DIR}"/dropbear-initramfs/id_rsa.pub > "${ETC_DIR}"/dropbear-initramfs/authorized_keys |
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83 | 83 | |
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84 | 84 | # Save Keys - convert with putty from rsa/openssh to puttkey |
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85 | 85 | cp -f "${ETC_DIR}"/dropbear-initramfs/id_rsa "${BASEDIR}"/dropbear_initramfs_key.rsa |
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86 | 86 | |
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87 | 87 | # Get unlock script |
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88 | 88 | install_exec files/initramfs/crypt_unlock.sh "${ETC_DIR}"/initramfs-tools/hooks/crypt_unlock.sh |
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89 | 89 | |
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90 | 90 | # Enable Dropbear inside initramfs |
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91 | 91 | printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=y\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf" |
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92 | 92 | |
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93 | 93 | # Enable Dropbear inside initramfs |
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94 | 94 | sed -i "54 i sleep 5" "${R}"/usr/share/initramfs-tools/scripts/init-premount/dropbear |
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95 | 95 | fi |
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96 | 96 | # CRYPTFSDROPBEAR=false |
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97 | 97 | else |
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98 | 98 | # Disable SSHD inside initramfs |
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99 | 99 | printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf" |
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100 | 100 | fi |
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101 | 101 | |
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102 | 102 | # Add cryptsetup modules to initramfs |
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103 | 103 | printf "#\n# CRYPTSETUP: [ y | n ]\n#\n\nCRYPTSETUP=y\n" >> "${ETC_DIR}/initramfs-tools/conf-hook" |
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104 | 104 | |
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105 | 105 | # Dummy mapping required by mkinitramfs |
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106 |
echo "0 1 crypt $(echo "${CRYPTFS_CIPHER}" | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup |
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106 | echo "0 1 crypt $(echo "${CRYPTFS_CIPHER}" | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}" | |
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107 | 107 | |
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108 | 108 | # Generate initramfs with encrypted root partition support |
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109 | 109 | chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" |
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110 | 110 | |
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111 | 111 | # Remove dummy mapping |
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112 | 112 | chroot_exec cryptsetup close "${CRYPTFS_MAPPING}" |
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113 | 113 | # CRYPTFS=false |
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114 | 114 | else |
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115 | 115 | # Generate initramfs without encrypted root partition support |
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116 | 116 | chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" |
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117 | 117 | fi |
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118 | 118 | fi |
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