package-notes/generate-rpm-note.sh
2022-01-14 18:50:39 +01:00

50 lines
1.4 KiB
Bash

#!/bin/bash
pad_string() {
for _ in $(seq "$1"); do
printf ' BYTE(0x00)'
done
}
write_string() {
text="$1"
prefix="$2"
label="$3"
total="$4"
printf "%s/* %s: '%s' */" "$prefix" "$label" "$text"
for i in $(seq ${#text}); do
if (( i % 4 == 1 )); then
printf '\n%s' "$prefix"
else
printf ' '
fi
printf 'BYTE(0x%02x)' "'${text:i-1:1}"
done
pad_string $(( total - ${#text} ))
printf '\n'
}
write_script() {
value_len=$(( (${#1} + 3) / 4 * 4 ))
printf 'SECTIONS\n{\n'
printf ' .note.package (READONLY) : ALIGN(4) {\n'
printf ' BYTE(0x04) BYTE(0x00) BYTE(0x00) BYTE(0x00) /* Length of Owner including NUL */\n'
printf ' BYTE(0x%02x) BYTE(0x%02x) BYTE(0x00) BYTE(0x00) /* Length of Value including NUL */\n' \
$((value_len % 256)) $((value_len / 256))
printf ' BYTE(0x7e) BYTE(0x1a) BYTE(0xfe) BYTE(0xca) /* Note ID */\n'
printf " BYTE(0x46) BYTE(0x44) BYTE(0x4f) BYTE(0x00) /* Owner: 'FDO' */\n"
write_string "$1" ' ' 'Value' "$value_len"
printf ' }\n}\n'
printf 'INSERT AFTER .note.gnu.build-id;\n'
}
cpe="$(cat /usr/lib/system-release-cpe)"
json="$(printf '{"type":"rpm","name":"%s","version":"%s","architecture":"%s","osCpe":"%s"}' "$1" "$2" "$3" "$cpe")"
write_script "$json"