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Commit | Line | Data |
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61f0b7ed LS |
1 | #!/bin/bash |
2 | ||
fb1790cd | 3 | set -eu |
61f0b7ed | 4 | |
5fedf3b3 | 5 | . ./config.sh |
61f0b7ed | 6 | |
181dd0ff SR |
7 | umask 077 # paranoid umask, we're creating private keys |
8 | ||
9 | ||
61f0b7ed LS |
10 | urlbase64() { |
11 | base64 -w 0 | sed -r 's/=*$//g' | tr '+/' '-_' | |
12 | } | |
91ce50af | 13 | |
9fe313d8 SR |
14 | hex2bin() { |
15 | perl -pe 's/([0-9a-f]{2})/chr hex $1/gie' | |
16 | } | |
61f0b7ed | 17 | |
91ce50af LS |
18 | _request() { |
19 | temperr="$(mktemp)" | |
20 | if [ "${1}" = "head" ]; then | |
21 | curl -sSf -I "${2}" 2>${temperr} | |
22 | elif [ "${1}" = "get" ]; then | |
23 | curl -sSf "${2}" 2>${temperr} | |
24 | elif [ "${1}" = "post" ]; then | |
25 | curl -sSf "${2}" -d "${3}" 2>${temperr} | |
26 | fi | |
27 | if [ ! -z "$(<${temperr})" ]; then echo " + ERROR: An error occured while accessing "${1}" ($(<"${temperr}"))" >&2; exit 1; fi | |
28 | rm -f "${temperr}" | |
29 | } | |
30 | ||
61f0b7ed | 31 | signed_request() { |
4aa48d33 | 32 | payload64="$(printf '%s' "${2}" | urlbase64)" |
61f0b7ed | 33 | |
2d6cb75f | 34 | # -sSf: stay silent but report errors and exit with != 0 if they occur |
91ce50af | 35 | nonce="$(_request head "${CA}/directory" | grep Replay-Nonce: | awk -F ': ' '{print $2}' | tr -d '\n\r')" |
61f0b7ed LS |
36 | |
37 | header='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}}' | |
38 | ||
39 | protected='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}, "nonce": "'"${nonce}"'"}' | |
4aa48d33 | 40 | protected64="$(printf '%s' "${protected}" | urlbase64)" |
61f0b7ed | 41 | |
4aa48d33 | 42 | signed64="$(printf '%s' "${protected64}.${payload64}" | openssl dgst -sha256 -sign private_key.pem | urlbase64)" |
61f0b7ed LS |
43 | |
44 | data='{"header": '"${header}"', "protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}' | |
45 | ||
91ce50af | 46 | _request post "${1}" "${data}" |
61f0b7ed LS |
47 | } |
48 | ||
61f0b7ed LS |
49 | sign_domain() { |
50 | domain="${1}" | |
1f65a335 SR |
51 | altnames="${*}" |
52 | echo "Signing domain ${1} (${*})..." | |
61f0b7ed LS |
53 | if [ ! -e "certs/${domain}" ]; then |
54 | SAN="" | |
55 | for altname in $altnames; do | |
56 | SAN+="DNS:${altname}, " | |
57 | done | |
4aa48d33 | 58 | SAN="$(printf '%s' "${SAN}" | sed 's/,\s*$//g')" |
61f0b7ed LS |
59 | |
60 | mkdir "certs/${domain}" | |
61 | ||
62 | echo " + Generating private key..." | |
f13eaa7f | 63 | openssl genrsa -out "certs/${domain}/privkey.pem" 4096 2> /dev/null > /dev/null |
61f0b7ed | 64 | echo " + Generating signing request..." |
199b70b6 | 65 | openssl req -new -sha256 -key "certs/${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 |
66 | fi |
67 | ||
68 | for altname in $altnames; do | |
69 | echo " + Requesting challenge for ${altname}..." | |
70 | response="$(signed_request "${CA}/acme/new-authz" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}')" | |
71 | ||
4aa48d33 SR |
72 | 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')" |
73 | challenge_uri="$(printf '%s\n' "${response}" | grep -Eo '"challenges":[^\[]*\[[^]]*]' | sed 's/{/\n{/g' | grep 'http-01' | grep -Eo '"uri":\s*"[^"]*"' | cut -d'"' -f4)" | |
61f0b7ed | 74 | |
2f3ee624 | 75 | if [ -z "${challenge_token}" ] || [ -z "${challenge_uri}" ]; then |
a1621214 | 76 | echo " + Error: Can't retrieve challenges (${response})" |
abb95693 LS |
77 | exit 1 |
78 | fi | |
79 | ||
61f0b7ed LS |
80 | keyauth="${challenge_token}.${thumbprint}" |
81 | ||
4aa48d33 | 82 | printf '%s' "${keyauth}" > "${WELLKNOWN}/${challenge_token}" |
2b5df371 | 83 | chmod a+r "${WELLKNOWN}/${challenge_token}" |
61f0b7ed LS |
84 | |
85 | echo " + Responding to challenge for ${altname}..." | |
86 | result="$(signed_request "${challenge_uri}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}')" | |
87 | ||
4aa48d33 | 88 | status="$(printf '%s\n' "${result}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" |
61f0b7ed LS |
89 | |
90 | if [ ! "${status}" = "pending" ] && [ ! "${status}" = "valid" ]; then | |
f13eaa7f | 91 | echo " + Challenge is invalid! (${result})" |
61f0b7ed LS |
92 | exit 1 |
93 | fi | |
94 | ||
95 | while [ ! "${status}" = "valid" ]; do | |
91ce50af | 96 | status="$(_request get "${challenge_uri}" | grep -Eo '"status":\s*"[^"]*"' | cut -d'"' -f4)" |
61f0b7ed LS |
97 | done |
98 | ||
99 | echo " + Challenge is valid!" | |
100 | done | |
101 | ||
102 | echo " + Requesting certificate..." | |
103 | csr64="$(openssl req -in "certs/${domain}/cert.csr" -outform DER | urlbase64)" | |
104 | crt64="$(signed_request "${CA}/acme/new-cert" '{"resource": "new-cert", "csr": "'"${csr64}"'"}' | base64 -w 64)" | |
4aa48d33 | 105 | printf -- '-----BEGIN CERTIFICATE-----\n%s\n-----END CERTIFICATE-----\n' "${crt64}" > "certs/${domain}/cert.pem" |
61f0b7ed LS |
106 | echo " + Done!" |
107 | } | |
108 | ||
8221727a | 109 | register="0" |
f13eaa7f LS |
110 | if [ ! -e "private_key.pem" ]; then |
111 | echo "+ Generating account key..." | |
112 | openssl genrsa -out "private_key.pem" 4096 2> /dev/null > /dev/null | |
8221727a LS |
113 | register="1" |
114 | fi | |
115 | ||
9fe313d8 | 116 | pubExponent64="$(printf "%06x" "$(openssl rsa -in private_key.pem -noout -text | grep publicExponent | head -1 | cut -d' ' -f2)" | hex2bin | urlbase64)" |
4aa48d33 | 117 | pubMod64="$(printf '%s' "$(openssl rsa -in private_key.pem -noout -modulus | cut -d'=' -f2)" | hex2bin | urlbase64)" |
8221727a | 118 | |
4aa48d33 | 119 | thumbprint="$(printf '%s' "$(printf '%s' '{"e":"'"${pubExponent64}"'","kty":"RSA","n":"'"${pubMod64}"'"}' | sha256sum | awk '{print $1}')" | hex2bin | urlbase64)" |
8221727a LS |
120 | |
121 | if [ "${register}" = "1" ]; then | |
f13eaa7f | 122 | echo "+ Registering account key with letsencrypt..." |
537f6fb7 | 123 | signed_request "${CA}/acme/new-reg" '{"resource": "new-reg", "agreement": "https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf"}' > /dev/null |
f13eaa7f LS |
124 | fi |
125 | ||
a53cd916 SR |
126 | <domains.txt sed 's/^\s*//g;s/\s*$//g' | grep -v '^#' | grep -v '^$' | while read line; do |
127 | sign_domain "$line" | |
61f0b7ed | 128 | done |