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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/=*$//g' | tr '+/' '-_' | |
9 | } | |
10 | ||
61f0b7ed LS |
11 | signed_request() { |
12 | payload64="$(echo -n "${2}" | urlbase64)" | |
13 | ||
14 | nonce="$(curl -s -I ${CA}/directory | grep Replay-Nonce | awk -F ': ' '{print $2}' | tr -d '\n\r')" | |
15 | ||
16 | header='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}}' | |
17 | ||
18 | protected='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}, "nonce": "'"${nonce}"'"}' | |
19 | protected64="$(echo -n "${protected}" | urlbase64)" | |
20 | ||
21 | signed64="$(echo -n "${protected64}.${payload64}" | openssl dgst -sha256 -sign private_key.pem | urlbase64)" | |
22 | ||
23 | data='{"header": '"${header}"', "protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}' | |
24 | ||
25 | curl -s -d "${data}" "${1}" | |
26 | } | |
27 | ||
61f0b7ed LS |
28 | sign_domain() { |
29 | domain="${1}" | |
30 | altnames="${@}" | |
31 | echo "Signing domain ${1} (${@})..." | |
32 | if [ ! -e "certs/${domain}" ]; then | |
33 | SAN="" | |
34 | for altname in $altnames; do | |
35 | SAN+="DNS:${altname}, " | |
36 | done | |
37 | SAN="$(echo -n $SAN | sed 's/,\s*$//g')" | |
38 | ||
39 | mkdir "certs/${domain}" | |
40 | ||
41 | echo " + Generating private key..." | |
f13eaa7f | 42 | openssl genrsa -out "certs/${domain}/privkey.pem" 4096 2> /dev/null > /dev/null |
61f0b7ed LS |
43 | echo " + Generating signing request..." |
44 | 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 | |
45 | fi | |
46 | ||
47 | for altname in $altnames; do | |
48 | echo " + Requesting challenge for ${altname}..." | |
49 | response="$(signed_request "${CA}/acme/new-authz" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}')" | |
50 | ||
51 | 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')" | |
52 | challenge_uri="$(echo $response | grep -Eo '"challenges":[^\[]*\[[^]]*]' | sed 's/{/\n{/g' | grep 'http-01' | grep -Eo '"uri":\s*"[^"]*"' | cut -d'"' -f4)" | |
53 | ||
abb95693 LS |
54 | if [ "${challenge_token}" = "" ] || [ "${challenge_uri}" = "" ]; then |
55 | echo " + Error: Can't retrieve challenges (${reqsponse})" | |
56 | exit 1 | |
57 | fi | |
58 | ||
61f0b7ed LS |
59 | keyauth="${challenge_token}.${thumbprint}" |
60 | ||
61 | echo -n "${keyauth}" > "${WELLKNOWN}/${challenge_token}" | |
62 | ||
63 | echo " + Responding to challenge for ${altname}..." | |
64 | result="$(signed_request "${challenge_uri}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}')" | |
65 | ||
66 | status="$(echo "${result}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" | |
67 | ||
68 | if [ ! "${status}" = "pending" ] && [ ! "${status}" = "valid" ]; then | |
f13eaa7f | 69 | echo " + Challenge is invalid! (${result})" |
61f0b7ed LS |
70 | exit 1 |
71 | fi | |
72 | ||
73 | while [ ! "${status}" = "valid" ]; do | |
74 | status="$(curl -s "${challenge_uri}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" | |
75 | done | |
76 | ||
77 | echo " + Challenge is valid!" | |
78 | done | |
79 | ||
80 | echo " + Requesting certificate..." | |
81 | csr64="$(openssl req -in "certs/${domain}/cert.csr" -outform DER | urlbase64)" | |
82 | crt64="$(signed_request "${CA}/acme/new-cert" '{"resource": "new-cert", "csr": "'"${csr64}"'"}' | base64 -w 64)" | |
83 | echo -e "-----BEGIN CERTIFICATE-----\n${crt64}\n-----END CERTIFICATE-----\n" > "certs/${domain}/cert.pem" | |
84 | echo " + Done!" | |
85 | } | |
86 | ||
8221727a | 87 | register="0" |
f13eaa7f LS |
88 | if [ ! -e "private_key.pem" ]; then |
89 | echo "+ Generating account key..." | |
90 | openssl genrsa -out "private_key.pem" 4096 2> /dev/null > /dev/null | |
8221727a LS |
91 | register="1" |
92 | fi | |
93 | ||
94 | pubExponent64="$(printf "%06x" "$(openssl rsa -in private_key.pem -noout -text | grep publicExponent | head -1 | cut -d' ' -f2)" | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | urlbase64)" | |
fcb5a03b | 95 | pubMod64="$(echo -n "$(openssl rsa -in private_key.pem -noout -modulus | cut -d'=' -f2)" | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | urlbase64)" |
8221727a | 96 | |
fcb5a03b | 97 | thumbprint="$(echo -n "$(echo -n '{"e":"'"${pubExponent64}"'","kty":"RSA","n":"'"${pubMod64}"'"}' | sha256sum | awk '{print $1}')" | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | urlbase64)" |
8221727a LS |
98 | |
99 | if [ "${register}" = "1" ]; then | |
f13eaa7f | 100 | echo "+ Registering account key with letsencrypt..." |
537f6fb7 | 101 | signed_request "${CA}/acme/new-reg" '{"resource": "new-reg", "agreement": "https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf"}' > /dev/null |
f13eaa7f LS |
102 | fi |
103 | ||
61f0b7ed LS |
104 | cat domains.txt | sed 's/^\s*//g;s/\s*$//g' | grep -v '^#' | grep -v '^$' | while read line; do |
105 | sign_domain $line | |
106 | done |