Mercurial > dropbear

annotate common-runopts.c @ 840:5128e525c8fa ecc

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Default to some larger key sizes
author Matt Johnston <matt@ucc.asn.au>
date Thu, 31 Oct 2013 22:49:15 +0800
parents e22d5f5f6e37
children d4ce5269a439
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1 /*
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2 * Dropbear - a SSH2 server
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3 *
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4 * Copyright (c) 2002,2003 Matt Johnston
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5 * All rights reserved.
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6 *
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7 * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 * of this software and associated documentation files (the "Software"), to deal
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9 * in the Software without restriction, including without limitation the rights
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10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 * copies of the Software, and to permit persons to whom the Software is
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12 * furnished to do so, subject to the following conditions:
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13 *
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14 * The above copyright notice and this permission notice shall be included in
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15 * all copies or substantial portions of the Software.
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16 *
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17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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23 * SOFTWARE. */
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24
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25 #include "includes.h"
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26 #include "runopts.h"
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27 #include "signkey.h"
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28 #include "buffer.h"
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29 #include "dbutil.h"
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30 #include "auth.h"
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31 #include "algo.h"
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32 #include "random.h"
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33
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34 runopts opts; /* GLOBAL */
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35
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36 /* returns success or failure, and the keytype in *type. If we want
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37 * to restrict the type, type can contain a type to return */
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38 int readhostkey(const char * filename, sign_key * hostkey, int *type) {
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39
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40 int ret = DROPBEAR_FAILURE;
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41 buffer *buf;
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42
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43 buf = buf_new(MAX_PRIVKEY_SIZE);
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44
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45 if (buf_readfile(buf, filename) == DROPBEAR_FAILURE) {
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46 goto out;
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47 }
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48 buf_setpos(buf, 0);
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49
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50 addrandom(buf_getptr(buf, buf->len), buf->len);
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51
47
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52 if (buf_get_priv_key(buf, hostkey, type) == DROPBEAR_FAILURE) {
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53 goto out;
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54 }
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55
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56 ret = DROPBEAR_SUCCESS;
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57 out:
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58
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59 buf_burn(buf);
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60 buf_free(buf);
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61 return ret;
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62 }
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63
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64 #ifdef ENABLE_USER_ALGO_LIST
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65 void
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66 parse_ciphers_macs()
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67 {
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68 if (opts.cipher_list)
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69 {
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70 if (strcmp(opts.cipher_list, "help") == 0)
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71 {
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72 char *ciphers = algolist_string(sshciphers);
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73 dropbear_log(LOG_INFO, "Available ciphers:\n%s\n", ciphers);
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74 m_free(ciphers);
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75 dropbear_exit(".");
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76 }
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77
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78 if (strcmp(opts.cipher_list, "none") == 0)
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79 {
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80 /* Encryption is required during authentication */
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81 opts.cipher_list = "none,aes128-ctr";
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82 }
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83
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84 if (check_user_algos(opts.cipher_list, sshciphers, "cipher") == 0)
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85 {
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86 dropbear_exit("No valid ciphers specified for '-c'");
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87 }
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88 }
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89
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90 if (opts.mac_list)
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91 {
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92 if (strcmp(opts.mac_list, "help") == 0)
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93 {
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94 char *macs = algolist_string(sshhashes);
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95 dropbear_log(LOG_INFO, "Available MACs:\n%s\n", macs);
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96 m_free(macs);
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97 dropbear_exit(".");
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98 }
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99
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100 if (check_user_algos(opts.mac_list, sshhashes, "MAC") == 0)
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101 {
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102 dropbear_exit("No valid MACs specified for '-m'");
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103 }
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104 }
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105 }
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106 #endif
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107