2 tofuproxy -- HTTP proxy with TLS certificates management
3 Copyright (C) 2021 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
33 "go.cypherpunks.ru/ucspi"
34 "go.stargrave.org/tofuproxy/caches"
35 "go.stargrave.org/tofuproxy/fifos"
40 type ClientCertificateGetter struct {
45 func (g *ClientCertificateGetter) get(
46 cri *tls.CertificateRequestInfo,
47 ) (*tls.Certificate, error) {
48 caches.TLSAuthCacheM.RLock()
49 tlsCert := caches.TLSAuthCache[g.host]
50 caches.TLSAuthCacheM.RUnlock()
55 b.WriteString(fmt.Sprintf(`
57 wm title . "TLS client authentication: %s"
59 label .lVersion -text "Version: %s"
66 ucspi.TLSVersion(cri.Version),
69 ents, err := os.ReadDir(CCerts)
73 certs := make([]*x509.Certificate, 0, len(ents))
74 tlsCerts := make([]*tls.Certificate, 0, len(ents))
75 for i, ent := range ents {
76 p := filepath.Join(CCerts, ent.Name())
77 _, cert, err := ucspi.CertificateFromFile(p)
81 prv, err := ucspi.PrivateKeyFromFile(p)
85 certs = append(certs, cert)
86 tlsCerts = append(tlsCerts, &tls.Certificate{
87 Certificate: [][]byte{cert.Raw},
90 b.WriteString(fmt.Sprintf(".lb insert end \"%d: %s\"\n", i, cert.Subject))
101 button .submit -text "Use" -command submit
104 cmd := exec.Command(CmdWish)
106 out, err := cmd.Output()
110 lines := strings.Split(string(out), "\n")
112 return nil, errors.New("invalid output from authentication form")
114 t := strings.Split(lines[0], ":")[0]
115 i, err := strconv.Atoi(t)
117 return &tls.Certificate{}, nil
119 fifos.LogTLSAuth <- fmt.Sprintf("%s\t%s", g.host, certs[i].Subject)
120 caches.TLSAuthCacheM.Lock()
121 caches.TLSAuthCache[g.host] = tlsCerts[i]
122 caches.TLSAuthCacheM.Unlock()
124 return tlsCerts[i], nil