1 | /*
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2 | * Copyright 2000-2016 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 <string.h>
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12 | #include <internal/conf.h>
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13 | #include <openssl/crypto.h>
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14 | #include <openssl/err.h>
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15 | #include <openssl/conf.h>
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16 | #include <openssl/conf_api.h>
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17 | #include <openssl/lhash.h>
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18 | #include "e_os.h"
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19 |
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20 | static CONF_METHOD *default_CONF_method = NULL;
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21 |
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22 | /* Init a 'CONF' structure from an old LHASH */
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23 |
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24 | void CONF_set_nconf(CONF *conf, LHASH_OF(CONF_VALUE) *hash)
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25 | {
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26 | if (default_CONF_method == NULL)
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27 | default_CONF_method = NCONF_default();
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28 |
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29 | default_CONF_method->init(conf);
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30 | conf->data = hash;
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31 | }
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32 |
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33 | /*
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34 | * The following section contains the "CONF classic" functions, rewritten in
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35 | * terms of the new CONF interface.
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36 | */
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37 |
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38 | int CONF_set_default_method(CONF_METHOD *meth)
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39 | {
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40 | default_CONF_method = meth;
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41 | return 1;
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42 | }
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43 |
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44 | LHASH_OF(CONF_VALUE) *CONF_load(LHASH_OF(CONF_VALUE) *conf, const char *file,
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45 | long *eline)
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46 | {
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47 | LHASH_OF(CONF_VALUE) *ltmp;
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48 | BIO *in = NULL;
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49 |
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50 | #ifdef OPENSSL_SYS_VMS
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51 | in = BIO_new_file(file, "r");
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52 | #else
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53 | in = BIO_new_file(file, "rb");
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54 | #endif
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55 | if (in == NULL) {
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56 | CONFerr(CONF_F_CONF_LOAD, ERR_R_SYS_LIB);
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57 | return NULL;
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58 | }
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59 |
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60 | ltmp = CONF_load_bio(conf, in, eline);
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61 | BIO_free(in);
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62 |
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63 | return ltmp;
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64 | }
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65 |
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66 | #ifndef OPENSSL_NO_STDIO
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67 | LHASH_OF(CONF_VALUE) *CONF_load_fp(LHASH_OF(CONF_VALUE) *conf, FILE *fp,
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68 | long *eline)
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69 | {
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70 | BIO *btmp;
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71 | LHASH_OF(CONF_VALUE) *ltmp;
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72 | if ((btmp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
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73 | CONFerr(CONF_F_CONF_LOAD_FP, ERR_R_BUF_LIB);
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74 | return NULL;
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75 | }
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76 | ltmp = CONF_load_bio(conf, btmp, eline);
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77 | BIO_free(btmp);
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78 | return ltmp;
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79 | }
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80 | #endif
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81 |
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82 | LHASH_OF(CONF_VALUE) *CONF_load_bio(LHASH_OF(CONF_VALUE) *conf, BIO *bp,
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83 | long *eline)
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84 | {
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85 | CONF ctmp;
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86 | int ret;
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87 |
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88 | CONF_set_nconf(&ctmp, conf);
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89 |
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90 | ret = NCONF_load_bio(&ctmp, bp, eline);
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91 | if (ret)
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92 | return ctmp.data;
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93 | return NULL;
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94 | }
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95 |
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96 | STACK_OF(CONF_VALUE) *CONF_get_section(LHASH_OF(CONF_VALUE) *conf,
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97 | const char *section)
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98 | {
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99 | if (conf == NULL) {
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100 | return NULL;
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101 | } else {
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102 | CONF ctmp;
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103 | CONF_set_nconf(&ctmp, conf);
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104 | return NCONF_get_section(&ctmp, section);
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105 | }
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106 | }
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107 |
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108 | char *CONF_get_string(LHASH_OF(CONF_VALUE) *conf, const char *group,
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109 | const char *name)
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110 | {
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111 | if (conf == NULL) {
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112 | return NCONF_get_string(NULL, group, name);
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113 | } else {
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114 | CONF ctmp;
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115 | CONF_set_nconf(&ctmp, conf);
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116 | return NCONF_get_string(&ctmp, group, name);
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117 | }
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118 | }
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119 |
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120 | long CONF_get_number(LHASH_OF(CONF_VALUE) *conf, const char *group,
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121 | const char *name)
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122 | {
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123 | int status;
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124 | long result = 0;
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125 |
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126 | if (conf == NULL) {
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127 | status = NCONF_get_number_e(NULL, group, name, &result);
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128 | } else {
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129 | CONF ctmp;
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130 | CONF_set_nconf(&ctmp, conf);
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131 | status = NCONF_get_number_e(&ctmp, group, name, &result);
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132 | }
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133 |
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134 | if (status == 0) {
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135 | /* This function does not believe in errors... */
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136 | ERR_clear_error();
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137 | }
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138 | return result;
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139 | }
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140 |
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141 | void CONF_free(LHASH_OF(CONF_VALUE) *conf)
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142 | {
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143 | CONF ctmp;
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144 | CONF_set_nconf(&ctmp, conf);
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145 | NCONF_free_data(&ctmp);
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146 | }
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147 |
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148 | #ifndef OPENSSL_NO_STDIO
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149 | int CONF_dump_fp(LHASH_OF(CONF_VALUE) *conf, FILE *out)
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150 | {
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151 | BIO *btmp;
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152 | int ret;
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153 |
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154 | if ((btmp = BIO_new_fp(out, BIO_NOCLOSE)) == NULL) {
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155 | CONFerr(CONF_F_CONF_DUMP_FP, ERR_R_BUF_LIB);
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156 | return 0;
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157 | }
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158 | ret = CONF_dump_bio(conf, btmp);
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159 | BIO_free(btmp);
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160 | return ret;
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161 | }
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162 | #endif
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163 |
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164 | int CONF_dump_bio(LHASH_OF(CONF_VALUE) *conf, BIO *out)
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165 | {
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166 | CONF ctmp;
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167 | CONF_set_nconf(&ctmp, conf);
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168 | return NCONF_dump_bio(&ctmp, out);
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169 | }
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170 |
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171 | /*
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172 | * The following section contains the "New CONF" functions. They are
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173 | * completely centralised around a new CONF structure that may contain
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174 | * basically anything, but at least a method pointer and a table of data.
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175 | * These functions are also written in terms of the bridge functions used by
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176 | * the "CONF classic" functions, for consistency.
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177 | */
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178 |
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179 | CONF *NCONF_new(CONF_METHOD *meth)
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180 | {
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181 | CONF *ret;
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182 |
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183 | if (meth == NULL)
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184 | meth = NCONF_default();
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185 |
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186 | ret = meth->create(meth);
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187 | if (ret == NULL) {
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188 | CONFerr(CONF_F_NCONF_NEW, ERR_R_MALLOC_FAILURE);
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189 | return (NULL);
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190 | }
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191 |
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192 | return ret;
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193 | }
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194 |
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195 | void NCONF_free(CONF *conf)
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196 | {
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197 | if (conf == NULL)
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198 | return;
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199 | conf->meth->destroy(conf);
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200 | }
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201 |
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202 | void NCONF_free_data(CONF *conf)
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203 | {
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204 | if (conf == NULL)
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205 | return;
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206 | conf->meth->destroy_data(conf);
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207 | }
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208 |
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209 | int NCONF_load(CONF *conf, const char *file, long *eline)
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210 | {
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211 | if (conf == NULL) {
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212 | CONFerr(CONF_F_NCONF_LOAD, CONF_R_NO_CONF);
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213 | return 0;
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214 | }
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215 |
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216 | return conf->meth->load(conf, file, eline);
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217 | }
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218 |
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219 | #ifndef OPENSSL_NO_STDIO
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220 | int NCONF_load_fp(CONF *conf, FILE *fp, long *eline)
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221 | {
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222 | BIO *btmp;
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223 | int ret;
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224 | if ((btmp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
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225 | CONFerr(CONF_F_NCONF_LOAD_FP, ERR_R_BUF_LIB);
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226 | return 0;
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227 | }
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228 | ret = NCONF_load_bio(conf, btmp, eline);
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229 | BIO_free(btmp);
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230 | return ret;
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231 | }
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232 | #endif
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233 |
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234 | int NCONF_load_bio(CONF *conf, BIO *bp, long *eline)
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235 | {
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236 | if (conf == NULL) {
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237 | CONFerr(CONF_F_NCONF_LOAD_BIO, CONF_R_NO_CONF);
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238 | return 0;
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239 | }
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240 |
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241 | return conf->meth->load_bio(conf, bp, eline);
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242 | }
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243 |
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244 | STACK_OF(CONF_VALUE) *NCONF_get_section(const CONF *conf, const char *section)
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245 | {
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246 | if (conf == NULL) {
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247 | CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_CONF);
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248 | return NULL;
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249 | }
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250 |
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251 | if (section == NULL) {
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252 | CONFerr(CONF_F_NCONF_GET_SECTION, CONF_R_NO_SECTION);
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253 | return NULL;
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254 | }
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255 |
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256 | return _CONF_get_section_values(conf, section);
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257 | }
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258 |
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259 | char *NCONF_get_string(const CONF *conf, const char *group, const char *name)
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260 | {
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261 | char *s = _CONF_get_string(conf, group, name);
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262 |
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263 | /*
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264 | * Since we may get a value from an environment variable even if conf is
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265 | * NULL, let's check the value first
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266 | */
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267 | if (s)
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268 | return s;
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269 |
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270 | if (conf == NULL) {
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271 | CONFerr(CONF_F_NCONF_GET_STRING,
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272 | CONF_R_NO_CONF_OR_ENVIRONMENT_VARIABLE);
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273 | return NULL;
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274 | }
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275 | CONFerr(CONF_F_NCONF_GET_STRING, CONF_R_NO_VALUE);
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276 | ERR_add_error_data(4, "group=", group, " name=", name);
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277 | return NULL;
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278 | }
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279 |
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280 | int NCONF_get_number_e(const CONF *conf, const char *group, const char *name,
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281 | long *result)
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282 | {
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283 | char *str;
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284 |
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285 | if (result == NULL) {
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286 | CONFerr(CONF_F_NCONF_GET_NUMBER_E, ERR_R_PASSED_NULL_PARAMETER);
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287 | return 0;
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288 | }
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289 |
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290 | str = NCONF_get_string(conf, group, name);
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291 |
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292 | if (str == NULL)
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293 | return 0;
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294 |
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295 | for (*result = 0; conf->meth->is_number(conf, *str);) {
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296 | *result = (*result) * 10 + conf->meth->to_int(conf, *str);
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297 | str++;
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298 | }
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299 |
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300 | return 1;
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301 | }
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302 |
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303 | #ifndef OPENSSL_NO_STDIO
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304 | int NCONF_dump_fp(const CONF *conf, FILE *out)
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305 | {
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306 | BIO *btmp;
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307 | int ret;
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308 | if ((btmp = BIO_new_fp(out, BIO_NOCLOSE)) == NULL) {
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309 | CONFerr(CONF_F_NCONF_DUMP_FP, ERR_R_BUF_LIB);
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310 | return 0;
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311 | }
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312 | ret = NCONF_dump_bio(conf, btmp);
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313 | BIO_free(btmp);
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314 | return ret;
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315 | }
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316 | #endif
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317 |
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318 | int NCONF_dump_bio(const CONF *conf, BIO *out)
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319 | {
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320 | if (conf == NULL) {
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321 | CONFerr(CONF_F_NCONF_DUMP_BIO, CONF_R_NO_CONF);
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322 | return 0;
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323 | }
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324 |
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325 | return conf->meth->dump(conf, out);
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326 | }
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327 |
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328 | /*
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329 | * These routines call the C malloc/free, to avoid intermixing with
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330 | * OpenSSL function pointers before the library is initialized.
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331 | */
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332 | OPENSSL_INIT_SETTINGS *OPENSSL_INIT_new(void)
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333 | {
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334 | OPENSSL_INIT_SETTINGS *ret = malloc(sizeof(*ret));
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335 |
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336 | if (ret != NULL)
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337 | memset(ret, 0, sizeof(*ret));
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338 | return ret;
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339 | }
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340 |
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341 |
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342 | #ifndef OPENSSL_NO_STDIO
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343 | int OPENSSL_INIT_set_config_appname(OPENSSL_INIT_SETTINGS *settings,
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344 | const char *appname)
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345 | {
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346 | char *newappname = NULL;
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347 |
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348 | if (appname != NULL) {
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349 | newappname = strdup(appname);
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350 | if (newappname == NULL)
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351 | return 0;
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352 | }
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353 |
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354 | free(settings->appname);
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355 | settings->appname = newappname;
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356 |
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357 | return 1;
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358 | }
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359 | #endif
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360 |
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361 | void OPENSSL_INIT_free(OPENSSL_INIT_SETTINGS *settings)
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362 | {
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363 | free(settings->appname);
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364 | free(settings);
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365 | }
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