1 /*
2 * Dropbear - a SSH2 server
3 *
4 * Copyright (c) 2002,2003 Matt Johnston
5 * All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE. */
24
25 #include "includes.h"
26 #include "runopts.h"
27 #include "signkey.h"
28 #include "buffer.h"
29 #include "dbutil.h"
30 #include "auth.h"
31 #include "algo.h"
32 #include "dbrandom.h"
33
34 runopts opts; /* GLOBAL */
35
36 /* returns success or failure, and the keytype in *type. If we want
37 * to restrict the type, type can contain a type to return */
readhostkey(const char * filename,sign_key * hostkey,enum signkey_type * type)38 int readhostkey(const char * filename, sign_key * hostkey,
39 enum signkey_type *type) {
40
41 int ret = DROPBEAR_FAILURE;
42 buffer *buf;
43
44 buf = buf_new(MAX_PRIVKEY_SIZE);
45
46 if (buf_readfile(buf, filename) == DROPBEAR_FAILURE) {
47 goto out;
48 }
49 buf_setpos(buf, 0);
50
51 addrandom(buf_getptr(buf, buf->len), buf->len);
52
53 if (buf_get_priv_key(buf, hostkey, type) == DROPBEAR_FAILURE) {
54 goto out;
55 }
56
57 ret = DROPBEAR_SUCCESS;
58 out:
59
60 buf_burn(buf);
61 buf_free(buf);
62 return ret;
63 }
64
65 #if DROPBEAR_USER_ALGO_LIST
66 void
parse_ciphers_macs()67 parse_ciphers_macs() {
68 int printed_help = 0;
69 if (opts.cipher_list) {
70 if (strcmp(opts.cipher_list, "help") == 0) {
71 char *ciphers = algolist_string(sshciphers);
72 dropbear_log(LOG_INFO, "Available ciphers: %s", ciphers);
73 m_free(ciphers);
74 printed_help = 1;
75 } else {
76 if (check_user_algos(opts.cipher_list, sshciphers, "cipher") == 0) {
77 dropbear_exit("No valid ciphers specified for '-c'");
78 }
79 }
80 }
81
82 if (opts.mac_list) {
83 if (strcmp(opts.mac_list, "help") == 0) {
84 char *macs = algolist_string(sshhashes);
85 dropbear_log(LOG_INFO, "Available MACs: %s", macs);
86 m_free(macs);
87 printed_help = 1;
88 } else {
89 if (check_user_algos(opts.mac_list, sshhashes, "MAC") == 0) {
90 dropbear_exit("No valid MACs specified for '-m'");
91 }
92 }
93 }
94 if (printed_help) {
95 dropbear_exit(".");
96 }
97 }
98 #endif
99
print_version()100 void print_version() {
101 fprintf(stderr, "Dropbear v%s\n", DROPBEAR_VERSION);
102 }
103
104
105