1 | /* apps/verify.c */ |
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2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 | * All rights reserved. |
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4 | * |
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5 | * This package is an SSL implementation written |
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6 | * by Eric Young (eay@cryptsoft.com). |
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7 | * The implementation was written so as to conform with Netscapes SSL. |
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8 | * |
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9 | * This library is free for commercial and non-commercial use as long as |
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10 | * the following conditions are aheared to. The following conditions |
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11 | * apply to all code found in this distribution, be it the RC4, RSA, |
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12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 | * included with this distribution is covered by the same copyright terms |
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14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 | * |
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16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 | * the code are not to be removed. |
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18 | * If this package is used in a product, Eric Young should be given attribution |
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19 | * as the author of the parts of the library used. |
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20 | * This can be in the form of a textual message at program startup or |
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21 | * in documentation (online or textual) provided with the package. |
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22 | * |
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23 | * Redistribution and use in source and binary forms, with or without |
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24 | * modification, are permitted provided that the following conditions |
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25 | * are met: |
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26 | * 1. Redistributions of source code must retain the copyright |
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27 | * notice, this list of conditions and the following disclaimer. |
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28 | * 2. Redistributions in binary form must reproduce the above copyright |
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29 | * notice, this list of conditions and the following disclaimer in the |
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30 | * documentation and/or other materials provided with the distribution. |
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31 | * 3. All advertising materials mentioning features or use of this software |
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32 | * must display the following acknowledgement: |
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33 | * "This product includes cryptographic software written by |
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34 | * Eric Young (eay@cryptsoft.com)" |
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35 | * The word 'cryptographic' can be left out if the rouines from the library |
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36 | * being used are not cryptographic related :-). |
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37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 | * the apps directory (application code) you must include an acknowledgement: |
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39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 | * |
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41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 | * SUCH DAMAGE. |
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52 | * |
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53 | * The licence and distribution terms for any publically available version or |
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54 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 | * copied and put under another distribution licence |
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56 | * [including the GNU Public Licence.] |
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57 | */ |
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58 | |
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59 | #include <stdio.h> |
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60 | #include <stdlib.h> |
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61 | #include <string.h> |
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62 | #include "apps.h" |
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63 | #include <openssl/bio.h> |
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64 | #include <openssl/err.h> |
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65 | #include <openssl/x509.h> |
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66 | #include <openssl/x509v3.h> |
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67 | #include <openssl/pem.h> |
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68 | |
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69 | #undef PROG |
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70 | #define PROG verify_main |
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71 | |
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72 | static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx); |
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73 | static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e); |
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74 | static STACK_OF(X509) *load_untrusted(char *file); |
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75 | static int v_verbose=0, vflags = 0; |
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76 | |
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77 | int MAIN(int, char **); |
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78 | |
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79 | int MAIN(int argc, char **argv) |
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80 | { |
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81 | ENGINE *e = NULL; |
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82 | int i,ret=1; |
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83 | int purpose = -1; |
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84 | char *CApath=NULL,*CAfile=NULL; |
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85 | char *untfile = NULL, *trustfile = NULL; |
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86 | STACK_OF(X509) *untrusted = NULL, *trusted = NULL; |
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87 | X509_STORE *cert_ctx=NULL; |
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88 | X509_LOOKUP *lookup=NULL; |
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89 | char *engine=NULL; |
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90 | |
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91 | cert_ctx=X509_STORE_new(); |
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92 | if (cert_ctx == NULL) goto end; |
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93 | X509_STORE_set_verify_cb_func(cert_ctx,cb); |
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94 | |
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95 | ERR_load_crypto_strings(); |
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96 | |
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97 | apps_startup(); |
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98 | |
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99 | if (bio_err == NULL) |
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100 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
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101 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
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102 | |
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103 | if (!load_config(bio_err, NULL)) |
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104 | goto end; |
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105 | |
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106 | argc--; |
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107 | argv++; |
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108 | for (;;) |
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109 | { |
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110 | if (argc >= 1) |
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111 | { |
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112 | if (strcmp(*argv,"-CApath") == 0) |
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113 | { |
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114 | if (argc-- < 1) goto end; |
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115 | CApath= *(++argv); |
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116 | } |
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117 | else if (strcmp(*argv,"-CAfile") == 0) |
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118 | { |
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119 | if (argc-- < 1) goto end; |
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120 | CAfile= *(++argv); |
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121 | } |
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122 | else if (strcmp(*argv,"-purpose") == 0) |
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123 | { |
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124 | X509_PURPOSE *xptmp; |
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125 | if (argc-- < 1) goto end; |
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126 | i = X509_PURPOSE_get_by_sname(*(++argv)); |
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127 | if(i < 0) |
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128 | { |
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129 | BIO_printf(bio_err, "unrecognized purpose\n"); |
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130 | goto end; |
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131 | } |
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132 | xptmp = X509_PURPOSE_get0(i); |
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133 | purpose = X509_PURPOSE_get_id(xptmp); |
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134 | } |
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135 | else if (strcmp(*argv,"-untrusted") == 0) |
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136 | { |
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137 | if (argc-- < 1) goto end; |
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138 | untfile= *(++argv); |
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139 | } |
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140 | else if (strcmp(*argv,"-trusted") == 0) |
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141 | { |
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142 | if (argc-- < 1) goto end; |
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143 | trustfile= *(++argv); |
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144 | } |
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145 | else if (strcmp(*argv,"-engine") == 0) |
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146 | { |
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147 | if (--argc < 1) goto end; |
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148 | engine= *(++argv); |
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149 | } |
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150 | else if (strcmp(*argv,"-help") == 0) |
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151 | goto end; |
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152 | else if (strcmp(*argv,"-ignore_critical") == 0) |
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153 | vflags |= X509_V_FLAG_IGNORE_CRITICAL; |
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154 | else if (strcmp(*argv,"-issuer_checks") == 0) |
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155 | vflags |= X509_V_FLAG_CB_ISSUER_CHECK; |
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156 | else if (strcmp(*argv,"-crl_check") == 0) |
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157 | vflags |= X509_V_FLAG_CRL_CHECK; |
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158 | else if (strcmp(*argv,"-crl_check_all") == 0) |
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159 | vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL; |
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160 | else if (strcmp(*argv,"-verbose") == 0) |
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161 | v_verbose=1; |
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162 | else if (argv[0][0] == '-') |
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163 | goto end; |
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164 | else |
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165 | break; |
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166 | argc--; |
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167 | argv++; |
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168 | } |
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169 | else |
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170 | break; |
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171 | } |
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172 | |
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173 | e = setup_engine(bio_err, engine, 0); |
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174 | |
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175 | lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_file()); |
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176 | if (lookup == NULL) abort(); |
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177 | if (CAfile) { |
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178 | i=X509_LOOKUP_load_file(lookup,CAfile,X509_FILETYPE_PEM); |
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179 | if(!i) { |
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180 | BIO_printf(bio_err, "Error loading file %s\n", CAfile); |
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181 | ERR_print_errors(bio_err); |
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182 | goto end; |
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183 | } |
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184 | } else X509_LOOKUP_load_file(lookup,NULL,X509_FILETYPE_DEFAULT); |
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185 | |
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186 | lookup=X509_STORE_add_lookup(cert_ctx,X509_LOOKUP_hash_dir()); |
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187 | if (lookup == NULL) abort(); |
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188 | if (CApath) { |
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189 | i=X509_LOOKUP_add_dir(lookup,CApath,X509_FILETYPE_PEM); |
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190 | if(!i) { |
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191 | BIO_printf(bio_err, "Error loading directory %s\n", CApath); |
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192 | ERR_print_errors(bio_err); |
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193 | goto end; |
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194 | } |
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195 | } else X509_LOOKUP_add_dir(lookup,NULL,X509_FILETYPE_DEFAULT); |
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196 | |
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197 | ERR_clear_error(); |
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198 | |
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199 | if(untfile) { |
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200 | if(!(untrusted = load_untrusted(untfile))) { |
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201 | BIO_printf(bio_err, "Error loading untrusted file %s\n", untfile); |
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202 | ERR_print_errors(bio_err); |
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203 | goto end; |
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204 | } |
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205 | } |
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206 | |
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207 | if(trustfile) { |
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208 | if(!(trusted = load_untrusted(trustfile))) { |
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209 | BIO_printf(bio_err, "Error loading untrusted file %s\n", trustfile); |
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210 | ERR_print_errors(bio_err); |
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211 | goto end; |
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212 | } |
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213 | } |
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214 | |
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215 | if (argc < 1) check(cert_ctx, NULL, untrusted, trusted, purpose, e); |
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216 | else |
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217 | for (i=0; i<argc; i++) |
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218 | check(cert_ctx,argv[i], untrusted, trusted, purpose, e); |
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219 | ret=0; |
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220 | end: |
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221 | if (ret == 1) { |
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222 | BIO_printf(bio_err,"usage: verify [-verbose] [-CApath path] [-CAfile file] [-purpose purpose] [-crl_check] [-engine e] cert1 cert2 ...\n"); |
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223 | BIO_printf(bio_err,"recognized usages:\n"); |
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224 | for(i = 0; i < X509_PURPOSE_get_count(); i++) { |
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225 | X509_PURPOSE *ptmp; |
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226 | ptmp = X509_PURPOSE_get0(i); |
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227 | BIO_printf(bio_err, "\t%-10s\t%s\n", X509_PURPOSE_get0_sname(ptmp), |
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228 | X509_PURPOSE_get0_name(ptmp)); |
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229 | } |
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230 | } |
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231 | if (cert_ctx != NULL) X509_STORE_free(cert_ctx); |
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232 | sk_X509_pop_free(untrusted, X509_free); |
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233 | sk_X509_pop_free(trusted, X509_free); |
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234 | apps_shutdown(); |
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235 | OPENSSL_EXIT(ret); |
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236 | } |
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237 | |
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238 | static int check(X509_STORE *ctx, char *file, STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, int purpose, ENGINE *e) |
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239 | { |
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240 | X509 *x=NULL; |
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241 | int i=0,ret=0; |
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242 | X509_STORE_CTX *csc; |
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243 | |
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244 | x = load_cert(bio_err, file, FORMAT_PEM, NULL, e, "certificate file"); |
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245 | if (x == NULL) |
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246 | goto end; |
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247 | fprintf(stdout,"%s: ",(file == NULL)?"stdin":file); |
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248 | |
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249 | csc = X509_STORE_CTX_new(); |
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250 | if (csc == NULL) |
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251 | { |
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252 | ERR_print_errors(bio_err); |
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253 | goto end; |
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254 | } |
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255 | X509_STORE_set_flags(ctx, vflags); |
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256 | if(!X509_STORE_CTX_init(csc,ctx,x,uchain)) |
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257 | { |
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258 | ERR_print_errors(bio_err); |
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259 | goto end; |
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260 | } |
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261 | if(tchain) X509_STORE_CTX_trusted_stack(csc, tchain); |
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262 | if(purpose >= 0) X509_STORE_CTX_set_purpose(csc, purpose); |
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263 | i=X509_verify_cert(csc); |
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264 | X509_STORE_CTX_free(csc); |
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265 | |
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266 | ret=0; |
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267 | end: |
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268 | if (i) |
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269 | { |
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270 | fprintf(stdout,"OK\n"); |
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271 | ret=1; |
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272 | } |
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273 | else |
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274 | ERR_print_errors(bio_err); |
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275 | if (x != NULL) X509_free(x); |
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276 | |
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277 | return(ret); |
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278 | } |
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279 | |
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280 | static STACK_OF(X509) *load_untrusted(char *certfile) |
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281 | { |
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282 | STACK_OF(X509_INFO) *sk=NULL; |
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283 | STACK_OF(X509) *stack=NULL, *ret=NULL; |
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284 | BIO *in=NULL; |
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285 | X509_INFO *xi; |
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286 | |
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287 | if(!(stack = sk_X509_new_null())) { |
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288 | BIO_printf(bio_err,"memory allocation failure\n"); |
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289 | goto end; |
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290 | } |
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291 | |
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292 | if(!(in=BIO_new_file(certfile, "r"))) { |
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293 | BIO_printf(bio_err,"error opening the file, %s\n",certfile); |
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294 | goto end; |
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295 | } |
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296 | |
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297 | /* This loads from a file, a stack of x509/crl/pkey sets */ |
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298 | if(!(sk=PEM_X509_INFO_read_bio(in,NULL,NULL,NULL))) { |
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299 | BIO_printf(bio_err,"error reading the file, %s\n",certfile); |
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300 | goto end; |
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301 | } |
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302 | |
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303 | /* scan over it and pull out the certs */ |
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304 | while (sk_X509_INFO_num(sk)) |
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305 | { |
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306 | xi=sk_X509_INFO_shift(sk); |
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307 | if (xi->x509 != NULL) |
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308 | { |
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309 | sk_X509_push(stack,xi->x509); |
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310 | xi->x509=NULL; |
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311 | } |
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312 | X509_INFO_free(xi); |
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313 | } |
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314 | if(!sk_X509_num(stack)) { |
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315 | BIO_printf(bio_err,"no certificates in file, %s\n",certfile); |
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316 | sk_X509_free(stack); |
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317 | goto end; |
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318 | } |
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319 | ret=stack; |
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320 | end: |
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321 | BIO_free(in); |
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322 | sk_X509_INFO_free(sk); |
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323 | return(ret); |
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324 | } |
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325 | |
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326 | static int MS_CALLBACK cb(int ok, X509_STORE_CTX *ctx) |
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327 | { |
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328 | char buf[256]; |
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329 | |
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330 | if (!ok) |
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331 | { |
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332 | X509_NAME_oneline( |
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333 | X509_get_subject_name(ctx->current_cert),buf, |
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334 | sizeof buf); |
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335 | printf("%s\n",buf); |
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336 | printf("error %d at %d depth lookup:%s\n",ctx->error, |
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337 | ctx->error_depth, |
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338 | X509_verify_cert_error_string(ctx->error)); |
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339 | if (ctx->error == X509_V_ERR_CERT_HAS_EXPIRED) ok=1; |
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340 | /* since we are just checking the certificates, it is |
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341 | * ok if they are self signed. But we should still warn |
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342 | * the user. |
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343 | */ |
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344 | if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; |
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345 | /* Continue after extension errors too */ |
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346 | if (ctx->error == X509_V_ERR_INVALID_CA) ok=1; |
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347 | if (ctx->error == X509_V_ERR_PATH_LENGTH_EXCEEDED) ok=1; |
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348 | if (ctx->error == X509_V_ERR_INVALID_PURPOSE) ok=1; |
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349 | if (ctx->error == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) ok=1; |
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350 | if (ctx->error == X509_V_ERR_CRL_HAS_EXPIRED) ok=1; |
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351 | if (ctx->error == X509_V_ERR_CRL_NOT_YET_VALID) ok=1; |
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352 | if (ctx->error == X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION) ok=1; |
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353 | } |
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354 | if (!v_verbose) |
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355 | ERR_clear_error(); |
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356 | return(ok); |
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357 | } |
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358 | |
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