1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* |
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4 | * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved. |
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5 | * |
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6 | * Licensed under the OpenSSL license (the "License"). You may not use |
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7 | * this file except in compliance with the License. You can obtain a copy |
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8 | * in the file LICENSE in the source distribution or at |
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9 | * https://www.openssl.org/source/license.html |
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10 | */ |
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11 | |
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12 | #include <stdio.h> |
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13 | #include <stdlib.h> |
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14 | #include <string.h> |
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15 | #include "apps.h" |
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16 | #include "progs.h" |
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17 | #include <openssl/bio.h> |
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18 | #include <openssl/err.h> |
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19 | #include <openssl/x509.h> |
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20 | #include <openssl/x509v3.h> |
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21 | #include <openssl/pem.h> |
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22 | |
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23 | static int cb(int ok, X509_STORE_CTX *ctx); |
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24 | static int check(X509_STORE *ctx, const char *file, |
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25 | STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, |
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26 | STACK_OF(X509_CRL) *crls, int show_chain); |
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27 | static int v_verbose = 0, vflags = 0; |
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28 | |
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29 | typedef enum OPTION_choice { |
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30 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
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31 | OPT_ENGINE, OPT_CAPATH, OPT_CAFILE, OPT_NOCAPATH, OPT_NOCAFILE, |
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32 | OPT_UNTRUSTED, OPT_TRUSTED, OPT_CRLFILE, OPT_CRL_DOWNLOAD, OPT_SHOW_CHAIN, |
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33 | OPT_V_ENUM, OPT_NAMEOPT, |
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34 | OPT_VERBOSE |
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35 | } OPTION_CHOICE; |
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36 | |
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37 | const OPTIONS verify_options[] = { |
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38 | {OPT_HELP_STR, 1, '-', "Usage: %s [options] cert.pem...\n"}, |
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39 | {OPT_HELP_STR, 1, '-', "Valid options are:\n"}, |
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40 | {"help", OPT_HELP, '-', "Display this summary"}, |
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41 | {"verbose", OPT_VERBOSE, '-', |
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42 | "Print extra information about the operations being performed."}, |
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43 | {"CApath", OPT_CAPATH, '/', "A directory of trusted certificates"}, |
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44 | {"CAfile", OPT_CAFILE, '<', "A file of trusted certificates"}, |
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45 | {"no-CAfile", OPT_NOCAFILE, '-', |
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46 | "Do not load the default certificates file"}, |
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47 | {"no-CApath", OPT_NOCAPATH, '-', |
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48 | "Do not load certificates from the default certificates directory"}, |
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49 | {"untrusted", OPT_UNTRUSTED, '<', "A file of untrusted certificates"}, |
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50 | {"trusted", OPT_TRUSTED, '<', "A file of trusted certificates"}, |
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51 | {"CRLfile", OPT_CRLFILE, '<', |
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52 | "File containing one or more CRL's (in PEM format) to load"}, |
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53 | {"crl_download", OPT_CRL_DOWNLOAD, '-', |
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54 | "Attempt to download CRL information for this certificate"}, |
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55 | {"show_chain", OPT_SHOW_CHAIN, '-', |
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56 | "Display information about the certificate chain"}, |
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57 | {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"}, |
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58 | OPT_V_OPTIONS, |
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59 | #ifndef OPENSSL_NO_ENGINE |
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60 | {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"}, |
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61 | #endif |
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62 | {NULL} |
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63 | }; |
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64 | |
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65 | int verify_main(int argc, char **argv) |
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66 | { |
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67 | ENGINE *e = NULL; |
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68 | STACK_OF(X509) *untrusted = NULL, *trusted = NULL; |
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69 | STACK_OF(X509_CRL) *crls = NULL; |
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70 | X509_STORE *store = NULL; |
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71 | X509_VERIFY_PARAM *vpm = NULL; |
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72 | const char *prog, *CApath = NULL, *CAfile = NULL; |
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73 | int noCApath = 0, noCAfile = 0; |
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74 | int vpmtouched = 0, crl_download = 0, show_chain = 0, i = 0, ret = 1; |
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75 | OPTION_CHOICE o; |
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76 | |
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77 | if ((vpm = X509_VERIFY_PARAM_new()) == NULL) |
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78 | goto end; |
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79 | |
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80 | prog = opt_init(argc, argv, verify_options); |
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81 | while ((o = opt_next()) != OPT_EOF) { |
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82 | switch (o) { |
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83 | case OPT_EOF: |
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84 | case OPT_ERR: |
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85 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
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86 | goto end; |
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87 | case OPT_HELP: |
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88 | opt_help(verify_options); |
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89 | BIO_printf(bio_err, "Recognized usages:\n"); |
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90 | for (i = 0; i < X509_PURPOSE_get_count(); i++) { |
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91 | X509_PURPOSE *ptmp; |
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92 | ptmp = X509_PURPOSE_get0(i); |
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93 | BIO_printf(bio_err, "\t%-10s\t%s\n", |
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94 | X509_PURPOSE_get0_sname(ptmp), |
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95 | X509_PURPOSE_get0_name(ptmp)); |
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96 | } |
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97 | |
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98 | BIO_printf(bio_err, "Recognized verify names:\n"); |
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99 | for (i = 0; i < X509_VERIFY_PARAM_get_count(); i++) { |
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100 | const X509_VERIFY_PARAM *vptmp; |
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101 | vptmp = X509_VERIFY_PARAM_get0(i); |
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102 | BIO_printf(bio_err, "\t%-10s\n", |
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103 | X509_VERIFY_PARAM_get0_name(vptmp)); |
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104 | } |
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105 | ret = 0; |
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106 | goto end; |
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107 | case OPT_V_CASES: |
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108 | if (!opt_verify(o, vpm)) |
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109 | goto end; |
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110 | vpmtouched++; |
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111 | break; |
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112 | case OPT_CAPATH: |
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113 | CApath = opt_arg(); |
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114 | break; |
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115 | case OPT_CAFILE: |
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116 | CAfile = opt_arg(); |
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117 | break; |
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118 | case OPT_NOCAPATH: |
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119 | noCApath = 1; |
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120 | break; |
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121 | case OPT_NOCAFILE: |
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122 | noCAfile = 1; |
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123 | break; |
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124 | case OPT_UNTRUSTED: |
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125 | /* Zero or more times */ |
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126 | if (!load_certs(opt_arg(), &untrusted, FORMAT_PEM, NULL, |
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127 | "untrusted certificates")) |
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128 | goto end; |
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129 | break; |
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130 | case OPT_TRUSTED: |
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131 | /* Zero or more times */ |
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132 | noCAfile = 1; |
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133 | noCApath = 1; |
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134 | if (!load_certs(opt_arg(), &trusted, FORMAT_PEM, NULL, |
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135 | "trusted certificates")) |
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136 | goto end; |
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137 | break; |
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138 | case OPT_CRLFILE: |
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139 | /* Zero or more times */ |
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140 | if (!load_crls(opt_arg(), &crls, FORMAT_PEM, NULL, |
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141 | "other CRLs")) |
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142 | goto end; |
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143 | break; |
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144 | case OPT_CRL_DOWNLOAD: |
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145 | crl_download = 1; |
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146 | break; |
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147 | case OPT_ENGINE: |
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148 | if ((e = setup_engine(opt_arg(), 0)) == NULL) { |
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149 | /* Failure message already displayed */ |
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150 | goto end; |
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151 | } |
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152 | break; |
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153 | case OPT_SHOW_CHAIN: |
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154 | show_chain = 1; |
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155 | break; |
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156 | case OPT_NAMEOPT: |
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157 | if (!set_nameopt(opt_arg())) |
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158 | goto end; |
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159 | break; |
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160 | case OPT_VERBOSE: |
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161 | v_verbose = 1; |
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162 | break; |
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163 | } |
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164 | } |
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165 | argc = opt_num_rest(); |
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166 | argv = opt_rest(); |
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167 | if (trusted != NULL && (CAfile || CApath)) { |
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168 | BIO_printf(bio_err, |
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169 | "%s: Cannot use -trusted with -CAfile or -CApath\n", |
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170 | prog); |
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171 | goto end; |
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172 | } |
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173 | |
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174 | if ((store = setup_verify(CAfile, CApath, noCAfile, noCApath)) == NULL) |
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175 | goto end; |
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176 | X509_STORE_set_verify_cb(store, cb); |
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177 | |
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178 | if (vpmtouched) |
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179 | X509_STORE_set1_param(store, vpm); |
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180 | |
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181 | ERR_clear_error(); |
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182 | |
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183 | if (crl_download) |
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184 | store_setup_crl_download(store); |
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185 | |
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186 | ret = 0; |
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187 | if (argc < 1) { |
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188 | if (check(store, NULL, untrusted, trusted, crls, show_chain) != 1) |
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189 | ret = -1; |
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190 | } else { |
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191 | for (i = 0; i < argc; i++) |
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192 | if (check(store, argv[i], untrusted, trusted, crls, |
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193 | show_chain) != 1) |
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194 | ret = -1; |
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195 | } |
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196 | |
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197 | end: |
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198 | X509_VERIFY_PARAM_free(vpm); |
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199 | X509_STORE_free(store); |
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200 | sk_X509_pop_free(untrusted, X509_free); |
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201 | sk_X509_pop_free(trusted, X509_free); |
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202 | sk_X509_CRL_pop_free(crls, X509_CRL_free); |
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203 | release_engine(e); |
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204 | return (ret < 0 ? 2 : ret); |
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205 | } |
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206 | |
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207 | static int check(X509_STORE *ctx, const char *file, |
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208 | STACK_OF(X509) *uchain, STACK_OF(X509) *tchain, |
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209 | STACK_OF(X509_CRL) *crls, int show_chain) |
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210 | { |
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211 | X509 *x = NULL; |
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212 | int i = 0, ret = 0; |
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213 | X509_STORE_CTX *csc; |
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214 | STACK_OF(X509) *chain = NULL; |
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215 | int num_untrusted; |
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216 | |
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217 | x = load_cert(file, FORMAT_PEM, "certificate file"); |
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218 | if (x == NULL) |
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219 | goto end; |
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220 | |
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221 | csc = X509_STORE_CTX_new(); |
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222 | if (csc == NULL) { |
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223 | printf("error %s: X.509 store context allocation failed\n", |
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224 | (file == NULL) ? "stdin" : file); |
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225 | goto end; |
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226 | } |
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227 | |
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228 | X509_STORE_set_flags(ctx, vflags); |
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229 | if (!X509_STORE_CTX_init(csc, ctx, x, uchain)) { |
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230 | X509_STORE_CTX_free(csc); |
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231 | printf("error %s: X.509 store context initialization failed\n", |
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232 | (file == NULL) ? "stdin" : file); |
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233 | goto end; |
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234 | } |
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235 | if (tchain != NULL) |
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236 | X509_STORE_CTX_set0_trusted_stack(csc, tchain); |
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237 | if (crls != NULL) |
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238 | X509_STORE_CTX_set0_crls(csc, crls); |
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239 | i = X509_verify_cert(csc); |
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240 | if (i > 0 && X509_STORE_CTX_get_error(csc) == X509_V_OK) { |
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241 | printf("%s: OK\n", (file == NULL) ? "stdin" : file); |
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242 | ret = 1; |
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243 | if (show_chain) { |
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244 | int j; |
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245 | |
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246 | chain = X509_STORE_CTX_get1_chain(csc); |
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247 | num_untrusted = X509_STORE_CTX_get_num_untrusted(csc); |
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248 | printf("Chain:\n"); |
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249 | for (j = 0; j < sk_X509_num(chain); j++) { |
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250 | X509 *cert = sk_X509_value(chain, j); |
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251 | printf("depth=%d: ", j); |
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252 | X509_NAME_print_ex_fp(stdout, |
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253 | X509_get_subject_name(cert), |
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254 | 0, get_nameopt()); |
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255 | if (j < num_untrusted) |
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256 | printf(" (untrusted)"); |
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257 | printf("\n"); |
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258 | } |
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259 | sk_X509_pop_free(chain, X509_free); |
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260 | } |
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261 | } else { |
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262 | printf("error %s: verification failed\n", (file == NULL) ? "stdin" : file); |
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263 | } |
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264 | X509_STORE_CTX_free(csc); |
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265 | |
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266 | end: |
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267 | if (i <= 0) |
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268 | ERR_print_errors(bio_err); |
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269 | X509_free(x); |
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270 | |
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271 | return ret; |
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272 | } |
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273 | |
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274 | static int cb(int ok, X509_STORE_CTX *ctx) |
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275 | { |
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276 | int cert_error = X509_STORE_CTX_get_error(ctx); |
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277 | X509 *current_cert = X509_STORE_CTX_get_current_cert(ctx); |
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278 | |
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279 | if (!ok) { |
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280 | if (current_cert != NULL) { |
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281 | X509_NAME_print_ex(bio_err, |
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282 | X509_get_subject_name(current_cert), |
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283 | 0, get_nameopt()); |
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284 | BIO_printf(bio_err, "\n"); |
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285 | } |
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286 | BIO_printf(bio_err, "%serror %d at %d depth lookup: %s\n", |
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287 | X509_STORE_CTX_get0_parent_ctx(ctx) ? "[CRL path] " : "", |
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288 | cert_error, |
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289 | X509_STORE_CTX_get_error_depth(ctx), |
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290 | X509_verify_cert_error_string(cert_error)); |
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291 | |
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292 | /* |
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293 | * Pretend that some errors are ok, so they don't stop further |
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294 | * processing of the certificate chain. Setting ok = 1 does this. |
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295 | * After X509_verify_cert() is done, we verify that there were |
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296 | * no actual errors, even if the returned value was positive. |
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297 | */ |
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298 | switch (cert_error) { |
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299 | case X509_V_ERR_NO_EXPLICIT_POLICY: |
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300 | policies_print(ctx); |
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301 | /* fall thru */ |
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302 | case X509_V_ERR_CERT_HAS_EXPIRED: |
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303 | /* Continue even if the leaf is a self signed cert */ |
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304 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
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305 | /* Continue after extension errors too */ |
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306 | case X509_V_ERR_INVALID_CA: |
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307 | case X509_V_ERR_INVALID_NON_CA: |
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308 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: |
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309 | case X509_V_ERR_INVALID_PURPOSE: |
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310 | case X509_V_ERR_CRL_HAS_EXPIRED: |
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311 | case X509_V_ERR_CRL_NOT_YET_VALID: |
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312 | case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION: |
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313 | ok = 1; |
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314 | } |
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315 | |
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316 | return ok; |
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317 | |
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318 | } |
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319 | if (cert_error == X509_V_OK && ok == 2) |
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320 | policies_print(ctx); |
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321 | if (!v_verbose) |
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322 | ERR_clear_error(); |
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323 | return ok; |
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324 | } |
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