45 lines
943 B
Bash
45 lines
943 B
Bash
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#!/bin/sh
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#
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# Load SSH host key from SD card.
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#
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start() {
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# If host key exists, do nothing.
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[ -f /etc/dropbear/dropbear_ed25519_host_key ] && return
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# If /etc/dropbear is a symlink, delete it.
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[ -L /etc/dropbear ] && rm /etc/dropbear
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# Create directory /etc/dropbear if it does not exist.
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mkdir -p /etc/dropbear
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# Try to copy SSH host key from SD card.
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mkdir -p /mnt/tmp_sdcard
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mount -t vfat -o fmask=0177 -r /dev/mmcblk0p1 /mnt/tmp_sdcard
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if ! cp -p /mnt/tmp_sdcard/dropbear_ed25519_host_key /etc/dropbear ; then
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echo "WARNING: Failed to load SSH host key from SD card" >&2
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umount /mnt/tmp_sdcard
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rmdir /mnt/tmp_sdcard
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exit 1
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fi
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umount /mnt/tmp_sdcard
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rmdir /mnt/tmp_sdcard
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chmod 0600 /etc/dropbear/dropbear_ed25519_host_key
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}
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case "$1" in
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start)
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start
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;;
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stop|restart|reload)
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;;
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*)
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echo "Usage: $0 start"
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exit 1
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esac
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