1 | /** @file
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2 | * IPRT - Crypto - Secure Socket Layer (SSL) / Transport Security Layer (TLS).
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3 | */
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4 |
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5 | /*
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6 | * Copyright (C) 2018-2019 Oracle Corporation
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7 | *
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8 | * This file is part of VirtualBox Open Source Edition (OSE), as
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9 | * available from http://www.virtualbox.org. This file is free software;
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10 | * you can redistribute it and/or modify it under the terms of the GNU
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11 | * General Public License (GPL) as published by the Free Software
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12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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15 | *
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16 | * The contents of this file may alternatively be used under the terms
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17 | * of the Common Development and Distribution License Version 1.0
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18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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19 | * VirtualBox OSE distribution, in which case the provisions of the
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20 | * CDDL are applicable instead of those of the GPL.
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21 | *
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22 | * You may elect to license modified versions of this file under the
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23 | * terms and conditions of either the GPL or the CDDL or both.
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24 | */
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25 | #ifdef IPRT_WITH_OPENSSL /* whole file */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | # include "internal/iprt.h"
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32 | # include <iprt/crypto/ssl.h>
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33 |
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34 | # include <iprt/asm.h>
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35 | # include <iprt/assert.h>
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36 | # include <iprt/err.h>
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37 | # include <iprt/file.h>
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38 | # include <iprt/mem.h>
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39 | # include <iprt/string.h>
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40 |
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41 | # include "internal/magics.h"
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42 |
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43 | # include "internal/iprt-openssl.h"
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44 | # include <openssl/ssl.h>
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45 | # include <openssl/tls1.h>
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46 |
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47 |
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48 | /*********************************************************************************************************************************
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49 | * Header Files *
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50 | *********************************************************************************************************************************/
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51 | /**
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52 | * SSL instance data for OpenSSL.
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53 | */
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54 | typedef struct RTCRSSLINT
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55 | {
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56 | /** Magic value (RTCRSSLINT_MAGIC). */
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57 | uint32_t u32Magic;
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58 | /** Reference count. */
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59 | uint32_t volatile cRefs;
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60 | /** The SSL context. */
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61 | SSL_CTX *pCtx;
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62 | } RTCRSSLINT;
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63 |
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64 | /**
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65 | * SSL session instance data for OpenSSL.
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66 | */
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67 | typedef struct RTCRSSLSESSIONINT
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68 | {
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69 | /** Magic value (RTCRSSLSESSIONINT_MAGIC). */
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70 | uint32_t u32Magic;
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71 | /** Reference count. */
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72 | uint32_t volatile cRefs;
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73 | /** RTCRSSLSESSION_F_XXX. */
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74 | uint32_t fFlags;
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75 |
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76 | /** The SSL instance. */
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77 | SSL *pSsl;
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78 | /** The socket BIO instance. */
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79 | BIO *pBio;
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80 | } RTCRSSLSESSIONINT;
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81 |
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82 |
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83 |
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84 | RTDECL(int) RTCrSslCreate(PRTCRSSL phSsl, uint32_t fFlags)
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85 | {
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86 | AssertPtr(phSsl);
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87 | *phSsl = NIL_RTCRSSL;
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88 | AssertReturn(!fFlags, VERR_INVALID_FLAGS);
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89 |
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90 | SSL_library_init();
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91 |
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92 | /*
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93 | * We aim at TLSv1 or higher here by default.
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94 | */
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95 | # if OPENSSL_VERSION_NUMBER >= 0x10100000
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96 | const SSL_METHOD *pSslMethod = TLS_method();
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97 | # elif OPENSSL_VERSION_NUMBER >= 0x10002000
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98 | const SSL_METHOD *pSslMethod = SSLv23_method();
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99 | # elif OPENSSL_VERSION_NUMBER >= 0x10000000
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100 | const SSL_METHOD *pSslMethod = TLSv1_method();
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101 | # else
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102 | SSL_METHOD *pSslMethod = TLSv1_method();
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103 | # endif
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104 | if (pSslMethod)
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105 | {
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106 | RTCRSSLINT *pThis = (RTCRSSLINT *)RTMemAllocZ(sizeof(*pThis));
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107 | if (pThis)
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108 | {
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109 | pThis->pCtx = SSL_CTX_new(pSslMethod);
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110 | if (pThis->pCtx)
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111 | {
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112 | /* Help with above aim. */
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113 | # if OPENSSL_VERSION_NUMBER >= 0x10100000
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114 | # ifndef SSL_CTX_get_min_proto_version
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115 | /* Some older OpenSSL 1.1.0 releases lack the getters, officially they were
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116 | * added with 1.1.1 but someone cherry picked them, just maybe too late. */
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117 | # define SSL_CTX_get_min_proto_version(ctx) (0)
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118 | # endif
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119 | if (SSL_CTX_get_min_proto_version(pThis->pCtx) < TLS1_VERSION)
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120 | SSL_CTX_set_min_proto_version(pThis->pCtx, TLS1_VERSION);
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121 | # elif OPENSSL_VERSION_NUMBER >= 0x10002000
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122 | SSL_CTX_set_options(pThis->pCtx, SSL_OP_NO_SSLv2);
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123 | SSL_CTX_set_options(pThis->pCtx, SSL_OP_NO_SSLv3);
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124 | # endif
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125 |
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126 | /*
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127 | * Complete the instance and return it.
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128 | */
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129 | pThis->u32Magic = RTCRSSLINT_MAGIC;
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130 | pThis->cRefs = 1;
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131 |
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132 | *phSsl = pThis;
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133 | return VINF_SUCCESS;
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134 | }
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135 | }
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136 | return VERR_NO_MEMORY;
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137 | }
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138 | return VERR_NOT_SUPPORTED;
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139 | }
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140 |
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141 |
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142 | RTDECL(uint32_t) RTCrSslRetain(RTCRSSL hSsl)
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143 | {
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144 | RTCRSSLINT *pThis = hSsl;
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145 | AssertPtrReturn(pThis, UINT32_MAX);
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146 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, UINT32_MAX);
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147 |
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148 | uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
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149 | Assert(cRefs > 1);
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150 | Assert(cRefs < 1024);
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151 | return cRefs;
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152 | }
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153 |
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154 |
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155 | /**
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156 | * Worker for RTCrSslRelease.
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157 | */
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158 | static int rtCrSslDestroy(RTCRSSLINT *pThis)
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159 | {
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160 | ASMAtomicWriteU32(&pThis->u32Magic, ~RTCRSSLINT_MAGIC);
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161 | SSL_CTX_free(pThis->pCtx);
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162 | pThis->pCtx = NULL;
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163 | RTMemFree(pThis);
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164 | return 0;
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165 | }
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166 |
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167 |
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168 | RTDECL(uint32_t) RTCrSslRelease(RTCRSSL hSsl)
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169 | {
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170 | RTCRSSLINT *pThis = hSsl;
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171 | if (pThis == NIL_RTCRSSL)
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172 | return 0;
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173 | AssertPtrReturn(pThis, UINT32_MAX);
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174 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, UINT32_MAX);
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175 |
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176 | uint32_t cRefs = ASMAtomicDecU32(&pThis->cRefs);
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177 | Assert(cRefs < 1024);
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178 | if (cRefs == 0)
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179 | return rtCrSslDestroy(pThis);
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180 | return cRefs;
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181 | }
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182 |
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183 |
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184 | RTDECL(int) RTCrSslSetCertificateFile(RTCRSSL hSsl, const char *pszFile, uint32_t fFlags)
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185 | {
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186 | RTCRSSLINT *pThis = hSsl;
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187 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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188 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, VERR_INVALID_HANDLE);
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189 | AssertReturn(!(fFlags & ~RTCRSSL_FILE_F_ASN1), VERR_INVALID_FLAGS);
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190 |
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191 | int rcOssl = SSL_CTX_use_certificate_file(pThis->pCtx, pszFile,
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192 | RTCRSSL_FILE_F_ASN1 & fFlags ? SSL_FILETYPE_ASN1 : SSL_FILETYPE_PEM);
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193 | if (rcOssl != 0)
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194 | return VINF_SUCCESS;
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195 | return !pszFile || !*pszFile || !RTFileExists(pszFile) ? VERR_FILE_NOT_FOUND : VERR_OPEN_FAILED; /** @todo Better status codes */
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196 | }
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197 |
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198 |
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199 | RTDECL(int) RTCrSslSetPrivateKeyFile(RTCRSSL hSsl, const char *pszFile, uint32_t fFlags)
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200 | {
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201 | RTCRSSLINT *pThis = hSsl;
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202 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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203 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, VERR_INVALID_HANDLE);
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204 | AssertReturn(!(fFlags & ~RTCRSSL_FILE_F_ASN1), VERR_INVALID_FLAGS);
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205 |
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206 | int rcOssl = SSL_CTX_use_PrivateKey_file(pThis->pCtx, pszFile,
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207 | RTCRSSL_FILE_F_ASN1 & fFlags ? SSL_FILETYPE_ASN1 : SSL_FILETYPE_PEM);
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208 | if (rcOssl != 0)
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209 | return VINF_SUCCESS;
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210 | return !pszFile || !*pszFile || !RTFileExists(pszFile) ? VERR_FILE_NOT_FOUND : VERR_OPEN_FAILED; /** @todo Better status codes */
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211 | }
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212 |
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213 |
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214 | RTDECL(int) RTCrSslLoadTrustedRootCerts(RTCRSSL hSsl, const char *pszFile, const char *pszDir)
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215 | {
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216 | RTCRSSLINT *pThis = hSsl;
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217 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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218 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, VERR_INVALID_HANDLE);
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219 |
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220 | int rcOssl = SSL_CTX_load_verify_locations(pThis->pCtx, pszFile, pszDir);
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221 | if (rcOssl != 0)
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222 | return VINF_SUCCESS;
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223 |
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224 | if (!pszFile || !*pszFile || !RTFileExists(pszFile))
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225 | return VERR_FILE_NOT_FOUND;
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226 | return VERR_OPEN_FAILED; /** @todo Better status codes */
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227 | }
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228 |
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229 |
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230 | RTDECL(int) RTCrSslSetNoPeerVerify(RTCRSSL hSsl)
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231 | {
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232 | RTCRSSLINT *pThis = hSsl;
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233 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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234 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, VERR_INVALID_HANDLE);
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235 |
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236 | SSL_CTX_set_verify(pThis->pCtx, SSL_VERIFY_NONE, NULL);
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237 | return VINF_SUCCESS;
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238 | }
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239 |
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240 |
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241 |
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242 | //RTDECL(int) RTCrSslCreateSession(RTCRSSL hSsl, RTSOCKET hSocket, uint32_t fFlags, PRTCRSSLSESSION phSslConn);
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243 |
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244 | RTDECL(int) RTCrSslCreateSessionForNativeSocket(RTCRSSL hSsl, RTHCINTPTR hNativeSocket, uint32_t fFlags,
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245 | PRTCRSSLSESSION phSslSession)
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246 | {
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247 | /*
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248 | * Validate input.
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249 | */
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250 | *phSslSession = NIL_RTCRSSLSESSION;
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251 |
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252 | RTCRSSLINT *pThis = hSsl;
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253 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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254 | AssertReturn(pThis->u32Magic == RTCRSSLINT_MAGIC, VERR_INVALID_HANDLE);
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255 | AssertReturn(!(fFlags & ~RTCRSSLSESSION_F_NON_BLOCKING), VERR_INVALID_FLAGS);
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256 |
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257 | /*
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258 | * Create a new session.
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259 | */
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260 | int rc = VERR_NO_MEMORY;
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261 | RTCRSSLSESSIONINT *pSession = (RTCRSSLSESSIONINT *)RTMemAllocZ(sizeof(*pSession));
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262 | if (pSession)
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263 | {
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264 | pSession->pSsl = SSL_new(pThis->pCtx);
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265 | if (pSession->pSsl)
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266 | {
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267 | /* Disable read-ahead if non-blocking socket relying on select/poll. */
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268 | if (fFlags & RTCRSSLSESSION_F_NON_BLOCKING)
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269 | SSL_set_read_ahead(pSession->pSsl, 0);
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270 |
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271 | /* Create a wrapper for the socket handle. */
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272 | pSession->pBio = BIO_new_socket(hNativeSocket, BIO_NOCLOSE);
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273 | if (pSession->pBio)
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274 | {
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275 | # if (OPENSSL_VERSION_NUMBER >= 0x10100000 && !defined(LIBRESSL_VERSION_NUMBER)) || LIBRESSL_VERSION_NUMBER >= 0x2070000f
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276 | BIO_up_ref(pSession->pBio); /* our reference. */
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277 | # endif
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278 | SSL_set_bio(pSession->pSsl, pSession->pBio, pSession->pBio);
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279 |
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280 | /*
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281 | * Done.
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282 | */
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283 | pSession->cRefs = 1;
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284 | pSession->u32Magic = RTCRSSLSESSIONINT_MAGIC;
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285 | *phSslSession = pSession;
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286 | return VINF_SUCCESS;
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287 | }
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288 |
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289 | SSL_free(pSession->pSsl);
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290 | pSession->pSsl = NULL;
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291 | }
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292 | RTMemFree(pThis);
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293 | }
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294 | return rc;
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295 | }
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296 |
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297 |
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298 | /*********************************************************************************************************************************
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299 | * Session implementation. *
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300 | *********************************************************************************************************************************/
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301 |
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302 | RTDECL(uint32_t) RTCrSslSessionRetain(RTCRSSLSESSION hSslSession)
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303 | {
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304 | RTCRSSLSESSIONINT *pThis = hSslSession;
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305 | AssertPtrReturn(pThis, UINT32_MAX);
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306 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, UINT32_MAX);
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307 |
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308 | uint32_t cRefs = ASMAtomicIncU32(&pThis->cRefs);
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309 | Assert(cRefs > 1);
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310 | Assert(cRefs < 1024);
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311 | return cRefs;
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312 | }
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313 |
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314 |
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315 | /**
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316 | * Worker for RTCrSslRelease.
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317 | */
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318 | static int rtCrSslSessionDestroy(RTCRSSLSESSIONINT *pThis)
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319 | {
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320 | ASMAtomicWriteU32(&pThis->u32Magic, ~RTCRSSLSESSIONINT_MAGIC);
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321 | SSL_free(pThis->pSsl);
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322 | pThis->pSsl = NULL;
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323 | # if (OPENSSL_VERSION_NUMBER >= 0x10100000 && !defined(LIBRESSL_VERSION_NUMBER)) || LIBRESSL_VERSION_NUMBER >= 0x2070000f
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324 | BIO_free(pThis->pBio);
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325 | # endif
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326 | pThis->pBio = NULL;
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327 | RTMemFree(pThis);
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328 | return 0;
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329 | }
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330 |
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331 |
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332 | RTDECL(uint32_t) RTCrSslSessionRelease(RTCRSSLSESSION hSslSession)
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333 | {
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334 | RTCRSSLSESSIONINT *pThis = hSslSession;
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335 | if (pThis == NIL_RTCRSSLSESSION)
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336 | return 0;
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337 | AssertPtrReturn(pThis, UINT32_MAX);
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338 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, UINT32_MAX);
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339 |
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340 | uint32_t cRefs = ASMAtomicDecU32(&pThis->cRefs);
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341 | Assert(cRefs < 1024);
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342 | if (cRefs == 0)
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343 | return rtCrSslSessionDestroy(pThis);
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344 | return cRefs;
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345 | }
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346 |
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347 |
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348 | RTDECL(int) RTCrSslSessionAccept(RTCRSSLSESSION hSslSession, uint32_t fFlags)
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349 | {
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350 | RTCRSSLSESSIONINT *pThis = hSslSession;
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351 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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352 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, VERR_INVALID_HANDLE);
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353 | AssertReturn(!fFlags, VERR_INVALID_FLAGS);
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354 |
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355 | int rcOssl = SSL_accept(pThis->pSsl);
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356 | if (rcOssl > 0)
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357 | return VINF_SUCCESS;
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358 |
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359 | /** @todo better status codes. */
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360 | if (BIO_should_retry(pThis->pBio))
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361 | return VERR_TRY_AGAIN;
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362 | return VERR_NOT_SUPPORTED;
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363 | }
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364 |
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365 |
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366 | RTDECL(int) RTCrSslSessionConnect(RTCRSSLSESSION hSslSession, uint32_t fFlags)
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367 | {
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368 | RTCRSSLSESSIONINT *pThis = hSslSession;
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369 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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370 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, VERR_INVALID_HANDLE);
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371 | AssertReturn(!fFlags, VERR_INVALID_FLAGS);
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372 |
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373 | int rcOssl = SSL_connect(pThis->pSsl);
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374 | if (rcOssl > 0)
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375 | return VINF_SUCCESS;
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376 |
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377 | /** @todo better status codes. */
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378 | if (BIO_should_retry(pThis->pBio))
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379 | return VERR_TRY_AGAIN;
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380 | return VERR_NOT_SUPPORTED;
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381 | }
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382 |
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383 |
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384 | RTDECL(const char *) RTCrSslSessionGetVersion(RTCRSSLSESSION hSslSession)
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385 | {
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386 | RTCRSSLSESSIONINT *pThis = hSslSession;
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387 | AssertPtrReturn(pThis, NULL);
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388 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, NULL);
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389 |
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390 | return SSL_get_version(pThis->pSsl);
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391 | }
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392 |
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393 |
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394 | RTDECL(int) RTCrSslSessionGetCertIssuerNameAsString(RTCRSSLSESSION hSslSession, char *pszBuf, size_t cbBuf, size_t *pcbActual)
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395 | {
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396 | RTCRSSLSESSIONINT *pThis = hSslSession;
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397 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
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398 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, VERR_INVALID_HANDLE);
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399 | AssertPtrNull(pszBuf);
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400 | AssertPtrNull(pcbActual);
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401 | if (pcbActual)
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402 | *pcbActual = 0;
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403 |
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404 | /*
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405 | * Get and format the certificate issuer name.
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406 | */
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407 | int rc = VERR_NOT_AVAILABLE;
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408 | X509 *pCert = SSL_get_certificate(pThis->pSsl);
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409 | if (pCert)
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410 | {
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411 | X509_NAME *pIssuer = X509_get_issuer_name(pCert);
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412 | if (pIssuer)
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413 | {
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414 | char *pszSrc = X509_NAME_oneline(pIssuer, NULL, 0);
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415 | if (pszSrc)
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416 | {
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417 | /*
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418 | * Copy out the result and free it.
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419 | */
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420 | size_t cbNeeded = strlen(pszSrc) + 1;
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421 | if (pcbActual)
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422 | *pcbActual = cbNeeded;
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423 |
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424 | if (pszBuf != NULL && cbBuf > 0)
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425 | {
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426 | if (cbBuf >= cbNeeded)
|
---|
427 | {
|
---|
428 | memcpy(pszBuf, pszSrc, cbNeeded);
|
---|
429 | rc = VINF_SUCCESS;
|
---|
430 | }
|
---|
431 | else
|
---|
432 | {
|
---|
433 | memcpy(pszBuf, pszSrc, cbBuf - 1);
|
---|
434 | pszBuf[cbBuf - 1] = '\0';
|
---|
435 | rc = VERR_BUFFER_OVERFLOW;
|
---|
436 | }
|
---|
437 | }
|
---|
438 | else
|
---|
439 | rc = VERR_BUFFER_OVERFLOW;
|
---|
440 | OPENSSL_free(pszSrc);
|
---|
441 | }
|
---|
442 | }
|
---|
443 | }
|
---|
444 | return rc;
|
---|
445 | }
|
---|
446 |
|
---|
447 |
|
---|
448 | RTDECL(bool) RTCrSslSessionPending(RTCRSSLSESSION hSslSession)
|
---|
449 | {
|
---|
450 | RTCRSSLSESSIONINT *pThis = hSslSession;
|
---|
451 | AssertPtrReturn(pThis, true);
|
---|
452 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, true);
|
---|
453 |
|
---|
454 | return SSL_pending(pThis->pSsl) != 0;
|
---|
455 | }
|
---|
456 |
|
---|
457 |
|
---|
458 | RTDECL(ssize_t) RTCrSslSessionRead(RTCRSSLSESSION hSslSession, void *pvBuf, size_t cbToRead)
|
---|
459 | {
|
---|
460 | RTCRSSLSESSIONINT *pThis = hSslSession;
|
---|
461 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
|
---|
462 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, VERR_INVALID_HANDLE);
|
---|
463 |
|
---|
464 | Assert((size_t)(int)cbToRead == cbToRead);
|
---|
465 |
|
---|
466 | int cbActual = SSL_read(pThis->pSsl, pvBuf, (int)cbToRead);
|
---|
467 | if (cbActual > 0)
|
---|
468 | return cbActual;
|
---|
469 | if (BIO_should_retry(pThis->pBio))
|
---|
470 | return VERR_TRY_AGAIN;
|
---|
471 | return VERR_READ_ERROR; /** @todo better status codes. */
|
---|
472 | }
|
---|
473 |
|
---|
474 |
|
---|
475 | RTDECL(ssize_t) RTCrSslSessionWrite(RTCRSSLSESSION hSslSession, void const *pvBuf, size_t cbToWrite)
|
---|
476 | {
|
---|
477 | RTCRSSLSESSIONINT *pThis = hSslSession;
|
---|
478 | AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
|
---|
479 | AssertReturn(pThis->u32Magic == RTCRSSLSESSIONINT_MAGIC, VERR_INVALID_HANDLE);
|
---|
480 |
|
---|
481 | Assert((size_t)(int)cbToWrite == cbToWrite);
|
---|
482 | Assert(cbToWrite != 0 /* undefined behavior if zero */);
|
---|
483 |
|
---|
484 | int cbActual = SSL_write(pThis->pSsl, pvBuf, (int)cbToWrite);
|
---|
485 | if (cbActual > 0)
|
---|
486 | return cbActual;
|
---|
487 | if (BIO_should_retry(pThis->pBio))
|
---|
488 | return VERR_TRY_AGAIN;
|
---|
489 | return VERR_WRITE_ERROR; /** @todo better status codes. */
|
---|
490 | }
|
---|
491 |
|
---|
492 | #endif /* IPRT_WITH_OPENSSL */
|
---|
493 |
|
---|