1 | /*
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2 | * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include <stdio.h>
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11 | #include <stdlib.h>
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12 | #include <string.h>
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13 | #include <time.h>
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14 | #include "apps.h"
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15 | #include <openssl/bio.h>
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16 | #include <openssl/conf.h>
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17 | #include <openssl/err.h>
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18 | #include <openssl/evp.h>
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19 | #include <openssl/lhash.h>
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20 | #include <openssl/x509.h>
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21 | #include <openssl/pem.h>
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22 |
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23 | typedef enum OPTION_choice {
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24 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
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25 | OPT_NOOUT, OPT_PUBKEY, OPT_VERIFY, OPT_IN, OPT_OUT,
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26 | OPT_ENGINE, OPT_KEY, OPT_CHALLENGE, OPT_PASSIN, OPT_SPKAC,
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27 | OPT_SPKSECT
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28 | } OPTION_CHOICE;
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29 |
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30 | OPTIONS spkac_options[] = {
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31 | {"help", OPT_HELP, '-', "Display this summary"},
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32 | {"in", OPT_IN, '<', "Input file"},
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33 | {"out", OPT_OUT, '>', "Output file"},
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34 | {"key", OPT_KEY, '<', "Create SPKAC using private key"},
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35 | {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
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36 | {"challenge", OPT_CHALLENGE, 's', "Challenge string"},
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37 | {"spkac", OPT_SPKAC, 's', "Alternative SPKAC name"},
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38 | {"noout", OPT_NOOUT, '-', "Don't print SPKAC"},
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39 | {"pubkey", OPT_PUBKEY, '-', "Output public key"},
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40 | {"verify", OPT_VERIFY, '-', "Verify SPKAC signature"},
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41 | {"spksect", OPT_SPKSECT, 's',
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42 | "Specify the name of an SPKAC-dedicated section of configuration"},
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43 | #ifndef OPENSSL_NO_ENGINE
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44 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
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45 | #endif
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46 | {NULL}
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47 | };
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48 |
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49 | int spkac_main(int argc, char **argv)
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50 | {
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51 | BIO *out = NULL;
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52 | CONF *conf = NULL;
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53 | ENGINE *e = NULL;
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54 | EVP_PKEY *pkey = NULL;
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55 | NETSCAPE_SPKI *spki = NULL;
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56 | char *challenge = NULL, *keyfile = NULL;
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57 | char *infile = NULL, *outfile = NULL, *passinarg = NULL, *passin = NULL;
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58 | char *spkstr = NULL, *prog;
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59 | const char *spkac = "SPKAC", *spksect = "default";
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60 | int i, ret = 1, verify = 0, noout = 0, pubkey = 0;
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61 | OPTION_CHOICE o;
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62 |
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63 | prog = opt_init(argc, argv, spkac_options);
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64 | while ((o = opt_next()) != OPT_EOF) {
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65 | switch (o) {
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66 | case OPT_EOF:
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67 | case OPT_ERR:
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68 | opthelp:
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69 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
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70 | goto end;
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71 | case OPT_HELP:
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72 | opt_help(spkac_options);
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73 | ret = 0;
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74 | goto end;
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75 | case OPT_IN:
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76 | infile = opt_arg();
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77 | break;
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78 | case OPT_OUT:
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79 | outfile = opt_arg();
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80 | break;
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81 | case OPT_NOOUT:
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82 | noout = 1;
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83 | break;
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84 | case OPT_PUBKEY:
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85 | pubkey = 1;
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86 | break;
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87 | case OPT_VERIFY:
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88 | verify = 1;
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89 | break;
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90 | case OPT_PASSIN:
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91 | passinarg = opt_arg();
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92 | break;
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93 | case OPT_KEY:
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94 | keyfile = opt_arg();
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95 | break;
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96 | case OPT_CHALLENGE:
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97 | challenge = opt_arg();
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98 | break;
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99 | case OPT_SPKAC:
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100 | spkac = opt_arg();
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101 | break;
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102 | case OPT_SPKSECT:
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103 | spksect = opt_arg();
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104 | break;
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105 | case OPT_ENGINE:
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106 | e = setup_engine(opt_arg(), 0);
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107 | break;
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108 | }
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109 | }
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110 | argc = opt_num_rest();
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111 | if (argc != 0)
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112 | goto opthelp;
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113 |
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114 | if (!app_passwd(passinarg, NULL, &passin, NULL)) {
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115 | BIO_printf(bio_err, "Error getting password\n");
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116 | goto end;
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117 | }
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118 |
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119 | if (keyfile) {
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120 | pkey = load_key(strcmp(keyfile, "-") ? keyfile : NULL,
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121 | FORMAT_PEM, 1, passin, e, "private key");
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122 | if (!pkey) {
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123 | goto end;
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124 | }
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125 | spki = NETSCAPE_SPKI_new();
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126 | if (challenge)
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127 | ASN1_STRING_set(spki->spkac->challenge,
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128 | challenge, (int)strlen(challenge));
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129 | NETSCAPE_SPKI_set_pubkey(spki, pkey);
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130 | NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
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131 | spkstr = NETSCAPE_SPKI_b64_encode(spki);
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132 |
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133 | out = bio_open_default(outfile, 'w', FORMAT_TEXT);
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134 | if (out == NULL) {
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135 | OPENSSL_free(spkstr);
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136 | goto end;
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137 | }
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138 | BIO_printf(out, "SPKAC=%s\n", spkstr);
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139 | OPENSSL_free(spkstr);
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140 | ret = 0;
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141 | goto end;
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142 | }
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143 |
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144 | if ((conf = app_load_config(infile)) == NULL)
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145 | goto end;
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146 |
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147 | spkstr = NCONF_get_string(conf, spksect, spkac);
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148 |
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149 | if (spkstr == NULL) {
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150 | BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
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151 | ERR_print_errors(bio_err);
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152 | goto end;
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153 | }
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154 |
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155 | spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);
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156 |
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157 | if (!spki) {
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158 | BIO_printf(bio_err, "Error loading SPKAC\n");
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159 | ERR_print_errors(bio_err);
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160 | goto end;
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161 | }
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162 |
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163 | out = bio_open_default(outfile, 'w', FORMAT_TEXT);
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164 | if (out == NULL)
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165 | goto end;
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166 |
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167 | if (!noout)
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168 | NETSCAPE_SPKI_print(out, spki);
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169 | pkey = NETSCAPE_SPKI_get_pubkey(spki);
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170 | if (verify) {
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171 | i = NETSCAPE_SPKI_verify(spki, pkey);
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172 | if (i > 0)
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173 | BIO_printf(bio_err, "Signature OK\n");
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174 | else {
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175 | BIO_printf(bio_err, "Signature Failure\n");
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176 | ERR_print_errors(bio_err);
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177 | goto end;
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178 | }
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179 | }
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180 | if (pubkey)
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181 | PEM_write_bio_PUBKEY(out, pkey);
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182 |
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183 | ret = 0;
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184 |
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185 | end:
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186 | NCONF_free(conf);
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187 | NETSCAPE_SPKI_free(spki);
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188 | BIO_free_all(out);
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189 | EVP_PKEY_free(pkey);
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190 | release_engine(e);
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191 | OPENSSL_free(passin);
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192 | return (ret);
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193 | }
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