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Commit | Line | Data |
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61f0b7ed LS |
1 | #!/bin/bash |
2 | ||
69f3e78b LS |
3 | set -e |
4 | set -u | |
5 | set -o pipefail | |
61f0b7ed | 6 | |
5fedf3b3 | 7 | . ./config.sh |
61f0b7ed | 8 | |
181dd0ff SR |
9 | umask 077 # paranoid umask, we're creating private keys |
10 | ||
11 | ||
61f0b7ed LS |
12 | urlbase64() { |
13 | base64 -w 0 | sed -r 's/=*$//g' | tr '+/' '-_' | |
14 | } | |
91ce50af | 15 | |
9fe313d8 SR |
16 | hex2bin() { |
17 | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | |
18 | } | |
61f0b7ed | 19 | |
91ce50af LS |
20 | _request() { |
21 | temperr="$(mktemp)" | |
22 | if [ "${1}" = "head" ]; then | |
23 | curl -sSf -I "${2}" 2>${temperr} | |
24 | elif [ "${1}" = "get" ]; then | |
25 | curl -sSf "${2}" 2>${temperr} | |
26 | elif [ "${1}" = "post" ]; then | |
27 | curl -sSf "${2}" -d "${3}" 2>${temperr} | |
28 | fi | |
7ec1e45a | 29 | if [ ! -z "$(<${temperr})" ]; then echo " + ERROR: An error occured while sending ${1}-request to ${2} ($(<"${temperr}"))" >&2; exit 1; fi |
91ce50af LS |
30 | rm -f "${temperr}" |
31 | } | |
32 | ||
61f0b7ed | 33 | signed_request() { |
4aa48d33 | 34 | payload64="$(printf '%s' "${2}" | urlbase64)" |
61f0b7ed | 35 | |
2d6cb75f | 36 | # -sSf: stay silent but report errors and exit with != 0 if they occur |
91ce50af | 37 | nonce="$(_request head "${CA}/directory" | grep Replay-Nonce: | awk -F ': ' '{print $2}' | tr -d '\n\r')" |
61f0b7ed LS |
38 | |
39 | header='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}}' | |
40 | ||
41 | protected='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}, "nonce": "'"${nonce}"'"}' | |
4aa48d33 | 42 | protected64="$(printf '%s' "${protected}" | urlbase64)" |
61f0b7ed | 43 | |
4aa48d33 | 44 | signed64="$(printf '%s' "${protected64}.${payload64}" | openssl dgst -sha256 -sign private_key.pem | urlbase64)" |
61f0b7ed LS |
45 | |
46 | data='{"header": '"${header}"', "protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}' | |
47 | ||
91ce50af | 48 | _request post "${1}" "${data}" |
61f0b7ed LS |
49 | } |
50 | ||
61f0b7ed LS |
51 | sign_domain() { |
52 | domain="${1}" | |
1f65a335 SR |
53 | altnames="${*}" |
54 | echo "Signing domain ${1} (${*})..." | |
61f0b7ed LS |
55 | if [ ! -e "certs/${domain}" ]; then |
56 | SAN="" | |
57 | for altname in $altnames; do | |
58 | SAN+="DNS:${altname}, " | |
59 | done | |
4aa48d33 | 60 | SAN="$(printf '%s' "${SAN}" | sed 's/,\s*$//g')" |
61f0b7ed LS |
61 | |
62 | mkdir "certs/${domain}" | |
63 | ||
64 | echo " + Generating private key..." | |
f13eaa7f | 65 | openssl genrsa -out "certs/${domain}/privkey.pem" 4096 2> /dev/null > /dev/null |
61f0b7ed | 66 | echo " + Generating signing request..." |
199b70b6 | 67 | openssl req -new -sha256 -key "certs/${domain}/privkey.pem" -out "certs/${domain}/cert.csr" -subj "/CN=${domain}/" -reqexts SAN -config <(cat /etc/ssl/openssl.cnf <(printf "[SAN]\nsubjectAltName=%s" "${SAN}")) > /dev/null |
61f0b7ed LS |
68 | fi |
69 | ||
70 | for altname in $altnames; do | |
71 | echo " + Requesting challenge for ${altname}..." | |
72 | response="$(signed_request "${CA}/acme/new-authz" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}')" | |
73 | ||
4aa48d33 SR |
74 | challenge_token="$(printf '%s\n' "${response}" | grep -Eo '"challenges":[^\[]*\[[^]]*]' | sed 's/{/\n{/g' | grep 'http-01' | grep -Eo '"token":\s*"[^"]*"' | cut -d'"' -f4 | sed 's/[^A-Za-z0-9_\-]/_/g')" |
75 | challenge_uri="$(printf '%s\n' "${response}" | grep -Eo '"challenges":[^\[]*\[[^]]*]' | sed 's/{/\n{/g' | grep 'http-01' | grep -Eo '"uri":\s*"[^"]*"' | cut -d'"' -f4)" | |
61f0b7ed | 76 | |
2f3ee624 | 77 | if [ -z "${challenge_token}" ] || [ -z "${challenge_uri}" ]; then |
a1621214 | 78 | echo " + Error: Can't retrieve challenges (${response})" |
abb95693 LS |
79 | exit 1 |
80 | fi | |
81 | ||
61f0b7ed LS |
82 | keyauth="${challenge_token}.${thumbprint}" |
83 | ||
4aa48d33 | 84 | printf '%s' "${keyauth}" > "${WELLKNOWN}/${challenge_token}" |
2b5df371 | 85 | chmod a+r "${WELLKNOWN}/${challenge_token}" |
61f0b7ed LS |
86 | |
87 | echo " + Responding to challenge for ${altname}..." | |
88 | result="$(signed_request "${challenge_uri}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}')" | |
89 | ||
4aa48d33 | 90 | status="$(printf '%s\n' "${result}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" |
61f0b7ed LS |
91 | |
92 | if [ ! "${status}" = "pending" ] && [ ! "${status}" = "valid" ]; then | |
f13eaa7f | 93 | echo " + Challenge is invalid! (${result})" |
61f0b7ed LS |
94 | exit 1 |
95 | fi | |
96 | ||
97 | while [ ! "${status}" = "valid" ]; do | |
91ce50af | 98 | status="$(_request get "${challenge_uri}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" |
61f0b7ed LS |
99 | done |
100 | ||
101 | echo " + Challenge is valid!" | |
102 | done | |
103 | ||
104 | echo " + Requesting certificate..." | |
105 | csr64="$(openssl req -in "certs/${domain}/cert.csr" -outform DER | urlbase64)" | |
106 | crt64="$(signed_request "${CA}/acme/new-cert" '{"resource": "new-cert", "csr": "'"${csr64}"'"}' | base64 -w 64)" | |
4aa48d33 | 107 | printf -- '-----BEGIN CERTIFICATE-----\n%s\n-----END CERTIFICATE-----\n' "${crt64}" > "certs/${domain}/cert.pem" |
61f0b7ed LS |
108 | echo " + Done!" |
109 | } | |
110 | ||
8221727a | 111 | register="0" |
f13eaa7f LS |
112 | if [ ! -e "private_key.pem" ]; then |
113 | echo "+ Generating account key..." | |
114 | openssl genrsa -out "private_key.pem" 4096 2> /dev/null > /dev/null | |
8221727a LS |
115 | register="1" |
116 | fi | |
117 | ||
9fe313d8 | 118 | pubExponent64="$(printf "%06x" "$(openssl rsa -in private_key.pem -noout -text | grep publicExponent | head -1 | cut -d' ' -f2)" | hex2bin | urlbase64)" |
4aa48d33 | 119 | pubMod64="$(printf '%s' "$(openssl rsa -in private_key.pem -noout -modulus | cut -d'=' -f2)" | hex2bin | urlbase64)" |
8221727a | 120 | |
4aa48d33 | 121 | thumbprint="$(printf '%s' "$(printf '%s' '{"e":"'"${pubExponent64}"'","kty":"RSA","n":"'"${pubMod64}"'"}' | sha256sum | awk '{print $1}')" | hex2bin | urlbase64)" |
8221727a LS |
122 | |
123 | if [ "${register}" = "1" ]; then | |
f13eaa7f | 124 | echo "+ Registering account key with letsencrypt..." |
537f6fb7 | 125 | signed_request "${CA}/acme/new-reg" '{"resource": "new-reg", "agreement": "https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf"}' > /dev/null |
f13eaa7f LS |
126 | fi |
127 | ||
a53cd916 SR |
128 | <domains.txt sed 's/^\s*//g;s/\s*$//g' | grep -v '^#' | grep -v '^$' | while read line; do |
129 | sign_domain "$line" | |
61f0b7ed | 130 | done |