| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 |
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| 4 | SMB2 Lease context handling
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| 5 |
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| 6 | Copyright (C) Stefan Metzmacher 2012
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| 7 | Copyright (C) Volker Lendecke 2013
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| 8 |
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| 9 | This program is free software; you can redistribute it and/or modify
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| 10 | it under the terms of the GNU General Public License as published by
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| 11 | the Free Software Foundation; either version 3 of the License, or
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| 12 | (at your option) any later version.
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| 13 |
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| 14 | This program is distributed in the hope that it will be useful,
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| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | GNU General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License
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| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 21 | */
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| 22 |
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| 23 | #include "includes.h"
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| 24 | #include "../libcli/smb/smb_common.h"
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| 25 |
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| 26 | ssize_t smb2_lease_pull(const uint8_t *buf, size_t len,
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| 27 | struct smb2_lease *lease)
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| 28 | {
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| 29 | int version;
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| 30 |
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| 31 | switch (len) {
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| 32 | case 32:
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| 33 | version = 1;
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| 34 | break;
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| 35 | case 52:
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| 36 | version = 2;
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| 37 | break;
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| 38 | default:
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| 39 | return -1;
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| 40 | }
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| 41 |
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| 42 | memcpy(&lease->lease_key, buf, 16);
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| 43 | lease->lease_state = IVAL(buf, 16);
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| 44 | lease->lease_flags = IVAL(buf, 20);
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| 45 | lease->lease_duration = BVAL(buf, 24);
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| 46 | lease->lease_version = version;
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| 47 |
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| 48 | switch (version) {
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| 49 | case 1:
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| 50 | ZERO_STRUCT(lease->parent_lease_key);
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| 51 | lease->lease_epoch = 0;
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| 52 | break;
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| 53 | case 2:
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| 54 | memcpy(&lease->parent_lease_key, buf+32, 16);
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| 55 | lease->lease_epoch = SVAL(buf, 48);
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| 56 | break;
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| 57 | }
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| 58 |
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| 59 | return len;
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| 60 | }
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| 61 |
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| 62 | bool smb2_lease_push(const struct smb2_lease *lease, uint8_t *buf, size_t len)
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| 63 | {
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| 64 | int version;
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| 65 |
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| 66 | switch (len) {
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| 67 | case 32:
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| 68 | version = 1;
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| 69 | break;
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| 70 | case 52:
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| 71 | version = 2;
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| 72 | break;
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| 73 | default:
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| 74 | return false;
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| 75 | }
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| 76 |
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| 77 | memcpy(&buf[0], &lease->lease_key, 16);
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| 78 | SIVAL(buf, 16, lease->lease_state);
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| 79 | SIVAL(buf, 20, lease->lease_flags);
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| 80 | SBVAL(buf, 24, lease->lease_duration);
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| 81 |
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| 82 | if (version == 2) {
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| 83 | memcpy(&buf[32], &lease->parent_lease_key, 16);
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| 84 | SIVAL(buf, 48, lease->lease_epoch);
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| 85 | }
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| 86 |
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| 87 | return true;
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| 88 | }
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| 89 |
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| 90 | bool smb2_lease_key_equal(const struct smb2_lease_key *k1,
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| 91 | const struct smb2_lease_key *k2)
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| 92 | {
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| 93 | return ((k1->data[0] == k2->data[0]) && (k1->data[1] == k2->data[1]));
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| 94 | }
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| 95 |
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| 96 | bool smb2_lease_equal(const struct GUID *g1,
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| 97 | const struct smb2_lease_key *k1,
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| 98 | const struct GUID *g2,
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| 99 | const struct smb2_lease_key *k2)
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| 100 | {
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| 101 | return GUID_equal(g1, g2) && smb2_lease_key_equal(k1, k2);
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| 102 | }
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