summaryrefslogtreecommitdiff
path: root/rotate-keys.in
blob: 0fc6a447dbbcd5bf64a152966ea3727797914c76 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
#!/bin/bash

key_dir='#ETCDIR#/simple-pki/cb'

if [ -r '#ETCDIR#/simple-pki/cb.conf' ]; then
  . '#ETCDIR#/simple-pki/cb.conf'
fi

me=$(readlink -e "$0")
cd /

hosts=$(
  find '#ETCDIR#/nginx/' \
    -name keys -prune , \
    -name sites-available -prune , \
    \( -type f -o -type l \) \
    -exec sed -n '
      s/^\s*//
      /^server_name\s.*;/ p
      /^server_name[^;]*$/,/;/ p
    ' {} \; 2>/dev/null \
  | tr '\n' ' ' \
  | sed '
    s/\s\+/ /g
    s/;\s*/;\n/g
    '"$(
      printf 's/\\s%s\\(;\\|\\s\)//\n' "${ignore_hosts[@]}"
    )"'
  ' \
  | sed -n '
    s/^server_name //
    T
    s/;$//
    T
    p
  ' \
  | sort -u
)

host_key_files=$(
  printf '%s\n' "${hosts}" \
  | cut -d' ' -f1
)

if [ "$(whoami)" != "${certificate_user}" ]; then

  if [ "$(whoami)" = 'root' ]; then
    updated_something=false
    for host_key_file in ${host_key_files}; do
      if [ -f "${key_dir}/${host_key_file}.key.new" ] \
      && [ -f "${key_dir}/${host_key_file}.crt.new" ] \
      && [ -f "${key_dir}/${host_key_file}.chain.new" ]; then
        if [ "$(stat -c%Y "${key_dir}/${host_key_file}.key.new")" -ge "$(($(date +%s)-60*60*24*key_min_duration))" ] \
        && [ -f "${key_dir}/${host_key_file}.key" ] \
        && [ "$(stat -c%Y "${key_dir}/${host_key_file}.crt.new")" -ge "$(($(date +%s)-60*60*24*key_min_duration))" ] \
        && [ -f "${key_dir}/${host_key_file}.crt" ] \
        && [ "$(stat -c%Y "${key_dir}/${host_key_file}.chain.new")" -ge "$(($(date +%s)-60*60*24*key_min_duration))" ] \
        && [ -f "${key_dir}/${host_key_file}.chain" ]; then
          continue
        fi
        mv "${key_dir}/${host_key_file}.key"{.new,}
        mv "${key_dir}/${host_key_file}.crt"{.new,}
        mv "${key_dir}/${host_key_file}.chain"{.new,}
        updated_something=true
      fi
    done
    if ${updated_something}; then
      systemctl try-restart nginx
    fi

    chown -R "${certificate_user}" "${key_dir}"
    exec su "${certificate_user}" -s /bin/bash -c "${me}"
  fi
  >&2 printf 'only root can su %s\n' "${certificate_user}"
  exit 1
fi

if [ -n "$(trap)" ]; then
  >&2 echo 'outer traps set - those will be forgotten!'
  exit 1
fi

tmp_dir=$(mktemp -d "${webserver_dir}"'/tmp.XXXXXXXXXX')
trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

printf '%s\n' "${hosts}" \
| while read -r host other_hosts; do
  if [ -f "${key_dir}/${host}.key.new" ] \
  && [ -f "${key_dir}/${host}.crt.new" ] \
  && [ -f "${key_dir}/${host}.chain.new" ]; then
    continue
  fi

  SAN=$(
    printf ',DNS:%s' \
      "${host}" \
      ${other_hosts} \
    | sed 's/^,//'
  ) \
  CN="${host}" \
  openssl req -new \
    -config '#ETCDIR#/simple-pki/server-ssl.conf' \
    -keyout "${key_dir}/${host}.key.new" \
    -out "${tmp_dir}/${host}.csr" \

  printf 'https://%s/.csr/%s/%s.csr\n' \
    "${host}" \
    "${tmp_dir##*/}" \
    "${host}" \
  >> "${tmp_dir}/commands"
done

if [ ! -s "${tmp_dir}/commands" ]; then
  >&2 echo 'nothing to do.'
  exit
fi

cd "${tmp_dir}"

ssh -T "${ca_host}" \
< 'commands' \
| tar -xzf -

for host_key_file in ${host_key_files}; do
  if [ ! -f "${tmp_dir}/${host_key_file}.crt" ] \
  || [ ! -f "${tmp_dir}/${host_key_file}.chain" ]; then
    continue
  fi
  cat "${tmp_dir}/${host_key_file}.crt" \
  > "${key_dir}/${host_key_file}.crt.new"
  cat "${tmp_dir}/${host_key_file}.chain" \
  > "${key_dir}/${host_key_file}.chain.new"
done