blob: 210691d0d79df42981d7eea48fb1a6e92e9b8194 (
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1 #!/usr/bin/env bash
2
3 # This is a pre-allocated string of 30 chars of whitespace
4 # DO NOT CHANGE THIS without great care - it will break header length
5 # calculations
6 LENS=( )
7 export SELF
8 export TMP
9
10 # Header: 0
11 # runscript: 1
12 # payload: 2
13 extract_chunk_index() {
14 local script="${1}"
15 local dest="${2}"
16 local index="${3}"
17 local skip=0
18
19 for (( i = 0; i < index; i++ )); do
20 skip=$(( skip + LENS[$i] ))
21 done
22
23 # Extract the requested chunk index
24 dd bs=1 count=${LENS[$index]} iflag=skip_bytes skip=${skip} \
25 if=${script} of=${dest} 2>/dev/null
26 }
27
28 extract_header() {
29 extract_chunk_index "${SELF}" "${TMP}/header.sh" 0
30 }
31
32 extract_runscript() {
33 extract_chunk_index "${SELF}" "${TMP}/run.sh.xz" 1
34 xz -d "${TMP}/run.sh.xz"
35 }
36
37 extract_payload() {
38 extract_chunk_index "${SELF}" "${TMP}/payload.tar.xz" 2
39 tar -C "${TMP}" -x -f payload.tar.xz
40 }
41
42
43 main() {
44 SELF="$(cd $(dirname ${0}) && pwd)/$(basename ${0})"
45 TMP="$(mktemp -d /tmp/installer-XXXXXXX)"
46
47 extract_header
48 extract_runscript
49 #extract_chunks "${self}" "${tmp}"
50
51 cd "${TMP}"
52 source run.sh
53
54 # Function 'deploy' is provided by run.sh
55 if [ "$(type -t deploy)" == 'function' ]; then
56 deploy
57 else
58 printf "ERROR: Deploy function not found.\n"
59 fi
60
61 # Cleanup
62 rm -rf "${TMP}"
63 }
64
65 main ${@}
66 exit 0
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