annotate dropbearkey.c @ 517:0d8782043d05

PAM shouldn't be on by default
author Matt Johnston <matt@ucc.asn.au>
date Tue, 11 Nov 2008 14:15:54 +0000
parents e430a26064ee
children 3aa74a4d83ae 76097ec1a29a
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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 /* The format of the keyfiles is basically a raw dump of the buffer. Data types
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26 * are specified in the transport draft - string is a 32-bit len then the
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27 * non-null-terminated string, mp_int is a 32-bit len then the bignum data.
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28 * The actual functions are buf_put_rsa_priv_key() and buf_put_dss_priv_key()
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29
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30 * RSA:
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31 * string "ssh-rsa"
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32 * mp_int e
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33 * mp_int n
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34 * mp_int d
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35 * mp_int p (newer versions only)
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36 * mp_int q (newer versions only)
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37 *
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38 * DSS:
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39 * string "ssh-dss"
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40 * mp_int p
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41 * mp_int q
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42 * mp_int g
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43 * mp_int y
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44 * mp_int x
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45 *
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46 */
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47 #include "includes.h"
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48 #include "signkey.h"
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49 #include "buffer.h"
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50 #include "dbutil.h"
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51
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52 #include "genrsa.h"
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53 #include "gendss.h"
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54
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55 static void printhelp(char * progname);
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56
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57 #define RSA_SIZE (1024/8) /* 1024 bit */
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58 #define DSS_SIZE (1024/8) /* 1024 bit */
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59
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60 static void buf_writefile(buffer * buf, const char * filename);
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61 static void printpubkey(sign_key * key, int keytype);
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62 static void justprintpub(const char* filename);
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63
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64 /* Print a help message */
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65 static void printhelp(char * progname) {
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66
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67 fprintf(stderr, "Usage: %s -t <type> -f <filename> [-s bits]\n"
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68 "Options are:\n"
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69 "-t type Type of key to generate. One of:\n"
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70 #ifdef DROPBEAR_RSA
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71 " rsa\n"
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72 #endif
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73 #ifdef DROPBEAR_DSS
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74 " dss\n"
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75 #endif
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76 "-f filename Use filename for the secret key\n"
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77 "-s bits Key size in bits, should be a multiple of 8 (optional)\n"
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78 " (DSS has a fixed size of 1024 bits)\n"
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79 "-y Just print the publickey and fingerprint for the\n private key in <filename>.\n"
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80 #ifdef DEBUG_TRACE
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81 "-v verbose\n"
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82 #endif
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83 ,progname);
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84 }
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85
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86 #if defined(DBMULTI_dropbearkey) || !defined(DROPBEAR_MULTI)
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87 #if defined(DBMULTI_dropbearkey) && defined(DROPBEAR_MULTI)
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88 int dropbearkey_main(int argc, char ** argv) {
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89 #else
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90 int main(int argc, char ** argv) {
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91 #endif
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92
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93 int i;
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94 char ** next = 0;
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95 sign_key *key = NULL;
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96 buffer *buf = NULL;
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97 char * filename = NULL;
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98 int keytype = -1;
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99 char * typetext = NULL;
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100 char * sizetext = NULL;
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101 unsigned int bits;
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102 unsigned int keysize;
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103 int printpub = 0;
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104
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105 /* get the commandline options */
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106 for (i = 1; i < argc; i++) {
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107 if (argv[i] == NULL) {
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108 continue; /* Whack */
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109 }
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110 if (next) {
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111 *next = argv[i];
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112 next = NULL;
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113 continue;
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114 }
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115
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116 if (argv[i][0] == '-') {
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117 switch (argv[i][1]) {
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118 case 'f':
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119 next = &filename;
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120 break;
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121 case 't':
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122 next = &typetext;
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123 break;
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124 case 's':
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125 next = &sizetext;
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126 break;
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127 case 'y':
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128 printpub = 1;
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129 break;
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130 case 'h':
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131 printhelp(argv[0]);
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132 exit(EXIT_SUCCESS);
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133 break;
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134 #ifdef DEBUG_TRACE
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135 case 'v':
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136 debug_trace = 1;
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137 break;
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138 #endif
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139 default:
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140 fprintf(stderr, "Unknown argument %s\n", argv[i]);
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141 printhelp(argv[0]);
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142 exit(EXIT_FAILURE);
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143 break;
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144 }
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145 }
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146 }
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147
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148 if (!filename) {
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149 fprintf(stderr, "Must specify a key filename\n");
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150 printhelp(argv[0]);
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151 exit(EXIT_FAILURE);
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152 }
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diff changeset
153
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
154 if (printpub) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
155 justprintpub(filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
156 /* Not reached */
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
157 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
158
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
159 /* check/parse args */
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
160 if (!typetext) {
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
161 fprintf(stderr, "Must specify key type\n");
4
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parents:
diff changeset
162 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
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parents:
diff changeset
163 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
165
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 if (strlen(typetext) == 3) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 #ifdef DROPBEAR_RSA
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168 if (strncmp(typetext, "rsa", 3) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 keytype = DROPBEAR_SIGNKEY_RSA;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
170 TRACE(("type is rsa"))
4
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
171 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 #ifdef DROPBEAR_DSS
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174 if (strncmp(typetext, "dss", 3) == 0) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
175 keytype = DROPBEAR_SIGNKEY_DSS;
165
0cfba3034be5 Fixed DEBUG_TRACE macro so that we don't get semicolons left about the place
Matt Johnston <matt@ucc.asn.au>
parents: 94
diff changeset
176 TRACE(("type is dss"))
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 if (keytype == -1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 fprintf(stderr, "Unknown key type '%s'\n", typetext);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 printhelp(argv[0]);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 if (sizetext) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187 if (sscanf(sizetext, "%u", &bits) != 1) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 fprintf(stderr, "Bits must be an integer\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
189 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190 }
457
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
191
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
192 if (keytype == DROPBEAR_SIGNKEY_DSS && bits != 1024) {
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
193 fprintf(stderr, "DSS keys have a fixed size of 1024 bits\n");
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
194 exit(EXIT_FAILURE);
e430a26064ee Make dropbearkey only generate 1024 bit keys
Matt Johnston <matt@ucc.asn.au>
parents: 340
diff changeset
195 } else if (bits < 512 || bits > 4096 || (bits % 8 != 0)) {
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196 fprintf(stderr, "Bits must satisfy 512 <= bits <= 4096, and be a"
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
197 " multiple of 8\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 keysize = bits / 8;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 if (keytype == DROPBEAR_SIGNKEY_DSS) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
204 keysize = DSS_SIZE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 } else if (keytype == DROPBEAR_SIGNKEY_RSA) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 keysize = RSA_SIZE;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207 } else {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 exit(EXIT_FAILURE); /* not reached */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 fprintf(stderr, "Will output %d bit %s secret key to '%s'\n", keysize*8,
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
214 typetext, filename);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 /* don't want the file readable by others */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
217 umask(077);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 /* now we can generate the key */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220 key = new_sign_key();
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 fprintf(stderr, "Generating key, this may take a while...\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 switch(keytype) {
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 #ifdef DROPBEAR_RSA
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 case DROPBEAR_SIGNKEY_RSA:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 key->rsakey = gen_rsa_priv_key(keysize); /* 128 bytes = 1024 bit */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 #ifdef DROPBEAR_DSS
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 case DROPBEAR_SIGNKEY_DSS:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 key->dsskey = gen_dss_priv_key(keysize); /* 128 bytes = 1024 bit */
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232 break;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
233 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
234 default:
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 fprintf(stderr, "Internal error, bad key type\n");
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 exit(EXIT_FAILURE);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
239 buf = buf_new(MAX_PRIVKEY_SIZE);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
240
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 buf_put_priv_key(buf, key, keytype);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 buf_setpos(buf, 0);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
243 buf_writefile(buf, filename);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 buf_burn(buf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246 buf_free(buf);
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
248 printpubkey(key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
249
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
250 sign_key_free(key);
4
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 return EXIT_SUCCESS;
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 }
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
254 #endif
fe6bca95afa7 Makefile.in contains updated files required
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
255
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
256 static void justprintpub(const char* filename) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
257
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
258 buffer *buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
259 sign_key *key = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
260 int keytype;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
261 int ret;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
262 int err = DROPBEAR_FAILURE;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
263
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
264 buf = buf_new(MAX_PRIVKEY_SIZE);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
265 ret = buf_readfile(buf, filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
266
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
267 if (ret != DROPBEAR_SUCCESS) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
268 fprintf(stderr, "Failed reading '%s'\n", filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
269 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
270 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
271
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
272 key = new_sign_key();
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
273 keytype = DROPBEAR_SIGNKEY_ANY;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
274
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
275 buf_setpos(buf, 0);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
276 ret = buf_get_priv_key(buf, key, &keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
277 if (ret == DROPBEAR_FAILURE) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
278 fprintf(stderr, "Bad key in '%s'\n", filename);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
279 goto out;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
280 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
281
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
282 printpubkey(key, keytype);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
283
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
284 err = DROPBEAR_SUCCESS;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
285
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
286 out:
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
287 buf_burn(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
288 buf_free(buf);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
289 buf = NULL;
340
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
290 if (key) {
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
291 sign_key_free(key);
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
292 key = NULL;
454a34b2dfd1 Fixes from Erik Hovland:
Matt Johnston <matt@ucc.asn.au>
parents: 325
diff changeset
293 }
73
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
294 exit(err);
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
295 }
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
296
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
297 static void printpubkey(sign_key * key, int keytype) {
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
298
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
299 buffer * buf = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
300 unsigned char base64key[MAX_PUBKEY_SIZE*2];
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
301 unsigned long base64len;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
302 int err;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
303 const char * typestring = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
304 char *fp = NULL;
0bf5cebe622c Dropbearkey can now print out pubkey portions
Matt Johnston <matt@ucc.asn.au>
parents: 70
diff changeset
305 int len;
324
bc7c134982df Include [email protected] in the pubkey line, since it's sometimes very useful
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
306 struct passwd * pw = NULL;
bc7c134982df Include [email protected] in the pubkey line, since it's sometimes very useful
Matt Johnston <matt@ucc.asn.au>
parents: 165
diff changeset
307 char * username = NULL;
bc7c134982df Include [email protected] in the pubkey line, since it's sometimes very useful
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308 char hostname[100];
73
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309
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310 buf = buf_new(MAX_PUBKEY_SIZE);
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311 buf_put_pub_key(buf, key, keytype);
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312 buf_setpos(buf, 4);
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313
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314 len = buf->len - buf->pos;
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315
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316 base64len = sizeof(base64key);
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317 err = base64_encode(buf_getptr(buf, len), len, base64key, &base64len);
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318
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319 if (err != CRYPT_OK) {
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320 fprintf(stderr, "base64 failed");
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321 }
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322
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323 typestring = signkey_name_from_type(keytype, &err);
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324
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325 fp = sign_key_fingerprint(buf_getptr(buf, len), len);
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326
324
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327 /* a [email protected] comment is informative */
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328 username = "";
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329 pw = getpwuid(getuid());
325
0e4f225b7e07 Add -N "no remote command" dbclient option.
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330 if (pw) {
324
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331 username = pw->pw_name;
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332 }
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333
bc7c134982df Include [email protected] in the pubkey line, since it's sometimes very useful
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334 gethostname(hostname, sizeof(hostname));
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335 hostname[sizeof(hostname)-1] = '\0';
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336
bc7c134982df Include [email protected] in the pubkey line, since it's sometimes very useful
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337 printf("Public key portion is:\n%s %s %[email protected]%s\nFingerprint: %s\n",
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338 typestring, base64key, username, hostname, fp);
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339
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340 m_free(fp);
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341 buf_free(buf);
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342 }
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343
4
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parents:
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344 /* Write a buffer to a file specified, failing if the file exists */
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345 static void buf_writefile(buffer * buf, const char * filename) {
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346
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347 int fd;
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348 int len;
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349
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350 fd = open(filename, O_RDWR | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
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351 if (fd < 0) {
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352 fprintf(stderr, "Couldn't create new file %s\n", filename);
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parents:
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353 perror("Reason");
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354 buf_burn(buf);
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355 exit(EXIT_FAILURE);
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356 }
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parents:
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357
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parents:
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358 /* write the file now */
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parents:
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359 while (buf->pos != buf->len) {
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360 len = write(fd, buf_getptr(buf, buf->len - buf->pos),
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parents:
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361 buf->len - buf->pos);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
362 if (errno == EINTR) {
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
363 continue;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
364 }
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
365 if (len <= 0) {
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parents:
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366 fprintf(stderr, "Failed writing file '%s'\n",filename);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
367 perror("Reason");
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
368 exit(EXIT_FAILURE);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
369 }
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parents:
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370 buf_incrpos(buf, len);
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parents:
diff changeset
371 }
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parents:
diff changeset
372
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
373 close(fd);
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parents:
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374 }