Revert "pthreadpool: add pthreadpool_tevent_[current_job_]per_thread_cwd()"
[samba.git] / lib / krb5_wrap / enctype_convert.c
1 /*
2    Unix SMB/CIFS implementation.
3
4    Kerberos utility functions
5
6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2012
7
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.
12
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.
17
18
19    You should have received a copy of the GNU General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "krb5_samba.h"
25 #include "librpc/gen_ndr/netlogon.h"
26
27 const krb5_enctype *samba_all_enctypes(void)
28 {
29         /* TODO: Find a way not to have to use a fixed list */
30         static const krb5_enctype enctypes[] = {
31                 ENCTYPE_DES_CBC_CRC,
32                 ENCTYPE_DES_CBC_MD5,
33                 ENCTYPE_AES128_CTS_HMAC_SHA1_96,
34                 ENCTYPE_AES256_CTS_HMAC_SHA1_96,
35                 ENCTYPE_ARCFOUR_HMAC,
36                 0
37         };
38         return enctypes;
39 };
40
41 /* Translate between the IETF encryption type values and the Microsoft
42  * msDS-SupportedEncryptionTypes values */
43 uint32_t kerberos_enctype_to_bitmap(krb5_enctype enc_type_enum)
44 {
45         switch (enc_type_enum) {
46         case ENCTYPE_DES_CBC_CRC:
47                 return ENC_CRC32;
48         case ENCTYPE_DES_CBC_MD5:
49                 return ENC_RSA_MD5;
50         case ENCTYPE_ARCFOUR_HMAC:
51                 return ENC_RC4_HMAC_MD5;
52         case ENCTYPE_AES128_CTS_HMAC_SHA1_96:
53                 return ENC_HMAC_SHA1_96_AES128;
54         case ENCTYPE_AES256_CTS_HMAC_SHA1_96:
55                 return ENC_HMAC_SHA1_96_AES256;
56         default:
57                 return 0;
58         }
59 }
60
61 /* Translate between the Microsoft msDS-SupportedEncryptionTypes values
62  * and the IETF encryption type values */
63 krb5_enctype ms_suptype_to_ietf_enctype(uint32_t enctype_bitmap)
64 {
65         switch (enctype_bitmap) {
66         case ENC_CRC32:
67                 return ENCTYPE_DES_CBC_CRC;
68         case ENC_RSA_MD5:
69                 return ENCTYPE_DES_CBC_MD5;
70         case ENC_RC4_HMAC_MD5:
71                 return ENCTYPE_ARCFOUR_HMAC;
72         case ENC_HMAC_SHA1_96_AES128:
73                 return ENCTYPE_AES128_CTS_HMAC_SHA1_96;
74         case ENC_HMAC_SHA1_96_AES256:
75                 return ENCTYPE_AES256_CTS_HMAC_SHA1_96;
76         default:
77                 return 0;
78         }
79 }
80
81 /* Return an array of krb5_enctype values */
82 krb5_error_code ms_suptypes_to_ietf_enctypes(TALLOC_CTX *mem_ctx,
83                                              uint32_t enctype_bitmap,
84                                              krb5_enctype **enctypes)
85 {
86         unsigned int i, j = 0;
87         *enctypes = talloc_zero_array(mem_ctx, krb5_enctype,
88                                         (8 * sizeof(enctype_bitmap)) + 1);
89         if (!*enctypes) {
90                 return ENOMEM;
91         }
92         for (i = 0; i < (8 * sizeof(enctype_bitmap)); i++) {
93                 uint32_t bit_value = (1U << i) & enctype_bitmap;
94                 if (bit_value & enctype_bitmap) {
95                         (*enctypes)[j] = ms_suptype_to_ietf_enctype(bit_value);
96                         if (!(*enctypes)[j]) {
97                                 continue;
98                         }
99                         j++;
100                 }
101         }
102         (*enctypes)[j] = 0;
103         return 0;
104 }