2 Unix SMB/CIFS implementation.
4 auto-generate self signed TLS certificates
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "gnutls/gnutls.h"
26 #include "gnutls/x509.h"
28 #define ORGANISATION_NAME "Samba Administration"
29 #define UNIT_NAME "Samba - temporary autogenerated certificate"
30 #define COMMON_NAME "Samba"
31 #define LIFETIME 700*24*60*60
34 void tls_cert_generate(TALLOC_CTX *mem_ctx,
35 const char *keyfile, const char *certfile,
39 auto-generate a set of self signed certificates
41 void tls_cert_generate(TALLOC_CTX *mem_ctx,
42 const char *keyfile, const char *certfile,
45 gnutls_x509_crt cacrt, crt;
46 gnutls_x509_privkey key, cakey;
47 uint32_t serial = (uint32_t)time(NULL);
48 unsigned char keyid[100];
51 size_t keyidsize = sizeof(keyid);
52 time_t activation = time(NULL), expiry = activation + LIFETIME;
55 if (file_exist(keyfile) || file_exist(certfile) || file_exist(cafile)) {
56 DEBUG(0,("TLS autogeneration skipped - some TLS files already exist\n"));
60 #define TLSCHECK(call) do { \
63 DEBUG(0,("TLS %s - %s\n", #call, gnutls_strerror(ret))); \
68 TLSCHECK(gnutls_global_init());
70 DEBUG(0,("Attempting to autogenerate TLS self-signed keys for https\n"));
72 DEBUG(3,("Generating private key\n"));
73 TLSCHECK(gnutls_x509_privkey_init(&key));
74 TLSCHECK(gnutls_x509_privkey_generate(key, GNUTLS_PK_RSA, DH_BITS, 0));
76 DEBUG(3,("Generating CA private key\n"));
77 TLSCHECK(gnutls_x509_privkey_init(&cakey));
78 TLSCHECK(gnutls_x509_privkey_generate(cakey, GNUTLS_PK_RSA, DH_BITS, 0));
80 DEBUG(3,("Generating CA certificate\n"));
81 TLSCHECK(gnutls_x509_crt_init(&cacrt));
82 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(cacrt,
83 GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
84 ORGANISATION_NAME, strlen(ORGANISATION_NAME)));
85 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(cacrt,
86 GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0,
87 UNIT_NAME, strlen(UNIT_NAME)));
88 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(cacrt,
89 GNUTLS_OID_X520_COMMON_NAME, 0,
90 COMMON_NAME, strlen(COMMON_NAME)));
91 TLSCHECK(gnutls_x509_crt_set_key(cacrt, cakey));
92 TLSCHECK(gnutls_x509_crt_set_serial(cacrt, &serial, sizeof(serial)));
93 TLSCHECK(gnutls_x509_crt_set_activation_time(cacrt, activation));
94 TLSCHECK(gnutls_x509_crt_set_expiration_time(cacrt, expiry));
95 TLSCHECK(gnutls_x509_crt_set_ca_status(cacrt, 0));
96 #ifdef GNUTLS_KP_TLS_WWW_SERVER
97 TLSCHECK(gnutls_x509_crt_set_key_purpose_oid(cacrt, GNUTLS_KP_TLS_WWW_SERVER, 0));
99 TLSCHECK(gnutls_x509_crt_set_version(cacrt, 3));
100 TLSCHECK(gnutls_x509_crt_get_key_id(cacrt, 0, keyid, &keyidsize));
101 #if HAVE_GNUTLS_X509_CRT_SET_SUBJECT_KEY_ID
102 TLSCHECK(gnutls_x509_crt_set_subject_key_id(cacrt, keyid, keyidsize));
104 TLSCHECK(gnutls_x509_crt_sign(cacrt, cacrt, cakey));
106 DEBUG(3,("Generating TLS certificate\n"));
107 TLSCHECK(gnutls_x509_crt_init(&crt));
108 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(crt,
109 GNUTLS_OID_X520_ORGANIZATION_NAME, 0,
110 ORGANISATION_NAME, strlen(ORGANISATION_NAME)));
111 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(crt,
112 GNUTLS_OID_X520_ORGANIZATIONAL_UNIT_NAME, 0,
113 UNIT_NAME, strlen(UNIT_NAME)));
114 TLSCHECK(gnutls_x509_crt_set_dn_by_oid(crt,
115 GNUTLS_OID_X520_COMMON_NAME, 0,
116 COMMON_NAME, strlen(COMMON_NAME)));
117 TLSCHECK(gnutls_x509_crt_set_key(crt, key));
118 TLSCHECK(gnutls_x509_crt_set_serial(crt, &serial, sizeof(serial)));
119 TLSCHECK(gnutls_x509_crt_set_activation_time(crt, activation));
120 TLSCHECK(gnutls_x509_crt_set_expiration_time(crt, expiry));
121 TLSCHECK(gnutls_x509_crt_set_ca_status(crt, 0));
122 #ifdef GNUTLS_KP_TLS_WWW_SERVER
123 TLSCHECK(gnutls_x509_crt_set_key_purpose_oid(crt, GNUTLS_KP_TLS_WWW_SERVER, 0));
125 TLSCHECK(gnutls_x509_crt_set_version(crt, 3));
126 TLSCHECK(gnutls_x509_crt_get_key_id(crt, 0, keyid, &keyidsize));
127 #if HAVE_GNUTLS_X509_CRT_SET_SUBJECT_KEY_ID
128 TLSCHECK(gnutls_x509_crt_set_subject_key_id(crt, keyid, keyidsize));
130 TLSCHECK(gnutls_x509_crt_sign(crt, crt, key));
132 DEBUG(3,("Exporting TLS keys\n"));
134 bufsize = sizeof(buf);
135 TLSCHECK(gnutls_x509_crt_export(crt, GNUTLS_X509_FMT_PEM, buf, &bufsize));
136 file_save(certfile, buf, bufsize);
138 bufsize = sizeof(buf);
139 TLSCHECK(gnutls_x509_crt_export(cacrt, GNUTLS_X509_FMT_PEM, buf, &bufsize));
140 file_save(cafile, buf, bufsize);
142 bufsize = sizeof(buf);
143 TLSCHECK(gnutls_x509_privkey_export(key, GNUTLS_X509_FMT_PEM, buf, &bufsize));
144 file_save(keyfile, buf, bufsize);
146 gnutls_x509_privkey_deinit(key);
147 gnutls_x509_privkey_deinit(cakey);
148 gnutls_x509_crt_deinit(cacrt);
149 gnutls_x509_crt_deinit(crt);
150 gnutls_global_deinit();
152 DEBUG(0,("TLS self-signed keys generated OK\n"));
156 DEBUG(0,("TLS certificate generation failed\n"));
160 void tls_cert_dummy(void) {}