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