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https://gitlab.alpinelinux.org/alpine/cloud/tiny-cloud.git
synced 2025-12-15 19:32:44 +03:00
7ea8f69a06
yash[1] and zsh does not handle 8-bit bytes in strings good. Work around it by using printf ... | cmp ... to compare the header. This should be 100% posix compatible. Also fix some of the compression header magic bytes: - unxz: Use octal aas the string '\3757zXZ\000' was misinterpreted by some shells. - lzma: the third byte represents compression mode[2], and we want support all compression modes not only '8', so we only check the first three bytes instead of 4. [1]: Upstream report: https://osdn.net/projects/yash/ticket/47772 [2]: https://github.com/frizb/FirmwareReverseEngineering/blob/master/IdentifyingCompressionAlgorithms.md#lzma
75 lines
2.2 KiB
Bash
75 lines
2.2 KiB
Bash
# Tiny Cloud - Main Phase Functions
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# vim:set ts=4 et ft=sh:
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: "${LIBDIR:=$PREFIX/lib}"
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. "$LIBDIR"/tiny-cloud/init-common
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# ensure existence of output directories
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[ ! -d "$TINY_CLOUD_LOGS" ] && mkdir -p "$TINY_CLOUD_LOGS"
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[ ! -d "$TINY_CLOUD_VAR" ] && mkdir -p "$TINY_CLOUD_VAR"
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set_hostname() {
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skip_action set_hostname && return
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local fqdn=$(imds @hostname)
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local host="${fqdn%%\.*}"
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mkdir -p "$ROOT"/etc
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echo "$host" > "$ROOT"/etc/hostname
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$MOCK hostname -F "$ROOT"/etc/hostname
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echo -e "127.0.1.1\t$fqdn $host" >> "$ROOT"/etc/hosts
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}
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set_ssh_keys() {
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skip_action set_ssh_keys && return
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local user="$CLOUD_USER"
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local pwent="$(getent passwd "$user")"
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local group=$(echo "$pwent" | cut -d: -f4)
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local ssh_dir="${ROOT}$(echo "$pwent" | cut -d: -f6)/.ssh"
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local keys_file="$ssh_dir/authorized_keys"
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if [ ! -d "$ssh_dir" ]; then
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mkdir -p "$ssh_dir"
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chmod 700 "$ssh_dir"
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fi
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touch "$keys_file"
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chmod 600 "$keys_file"
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$MOCK chown -R "$user:$group" "$ssh_dir"
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imds @ssh-keys > "$keys_file"
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}
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save_userdata() {
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skip_action save_userdata && return
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local userdata="$TINY_CLOUD_VAR/user-data"
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local tmpfile=$(mktemp "$userdata.XXXXXX")
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local cmd
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imds -e @userdata > "$tmpfile"
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cmd="cat"
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if ! skip_action decompress_userdata; then
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if printf '\037\213\010' | cmp -s -n 3 "$tmpfile"; then
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gzip -dc "$tmpfile" > "$userdata"
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elif printf 'BZh' | cmp -s -n 3 "$tmpfile"; then
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bzip2 -dc "$tmpfile" > "$userdata"
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elif printf '\375\067\172\130\132\000' | cmp -s -n 6 "$tmpfile"; then
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unxz -c "$tmpfile" > "$userdata"
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elif printf '\135\000\000' | cmp -s -n 3 "$tmpfile"; then
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lzma -dc "$tmpfile" > "$userdata"
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elif printf '\211\114\132' | cmp -s -n 3 "$tmpfile"; then
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lzop -dc "$tmpfile" > "$userdata"
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elif printf '\004\042\115\030' | cmp -s -n 4 "$tmpfile"; then
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lz4 -dc "$tmpfile" > "$userdata"
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elif printf '(\265/\375' | cmp -s -n 4 "$tmpfile"; then
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zstd -dc "$tmpfile" > "$userdata"
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else
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cp "$tmpfile" "$userdata"
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fi
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else
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cp "$tmpfile" "$userdata"
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fi
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rm "$tmpfile"
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}
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