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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_event.h>
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10
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90
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11
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12 typedef struct {
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13 ngx_str_t engine;
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14 } ngx_openssl_conf_t;
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28
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15
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0
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16
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96
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17 static void ngx_ssl_handshake_handler(ngx_event_t *ev);
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38
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18 static ngx_int_t ngx_ssl_handle_recv(ngx_connection_t *c, int n);
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22
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19 static void ngx_ssl_write_handler(ngx_event_t *wev);
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20 static void ngx_ssl_read_handler(ngx_event_t *rev);
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96
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21 static void ngx_ssl_connection_error(ngx_connection_t *c, int sslerr,
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22 ngx_err_t err, char *text);
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90
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23 static void *ngx_openssl_create_conf(ngx_cycle_t *cycle);
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24 static char *ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf);
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25
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26 #if !(NGX_SSL_ENGINE)
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27 static char *ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd,
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28 void *conf);
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29 #endif
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30
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31
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32 static ngx_command_t ngx_openssl_commands[] = {
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33
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34 { ngx_string("ssl_engine"),
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35 NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1,
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36 #if (NGX_SSL_ENGINE)
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37 ngx_conf_set_str_slot,
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38 #else
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39 ngx_openssl_noengine,
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40 #endif
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41 0,
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42 offsetof(ngx_openssl_conf_t, engine),
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43 NULL },
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44
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45 ngx_null_command
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46 };
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47
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48
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49 static ngx_core_module_t ngx_openssl_module_ctx = {
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50 ngx_string("openssl"),
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51 ngx_openssl_create_conf,
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52 ngx_openssl_init_conf
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53 };
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54
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55
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56 ngx_module_t ngx_openssl_module = {
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57 NGX_MODULE_V1,
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58 &ngx_openssl_module_ctx, /* module context */
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59 ngx_openssl_commands, /* module directives */
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60 NGX_CORE_MODULE, /* module type */
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61 NULL, /* init master */
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62 NULL, /* init module */
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63 NULL, /* init process */
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64 NULL, /* init thread */
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65 NULL, /* exit thread */
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66 NULL, /* exit process */
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67 NULL, /* exit master */
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68 NGX_MODULE_V1_PADDING
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96
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69 };
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70
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71
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72 static long ngx_ssl_protocols[] = {
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73 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
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74 SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
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75 SSL_OP_NO_SSLv2|SSL_OP_NO_TLSv1,
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76 SSL_OP_NO_TLSv1,
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77 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3,
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78 SSL_OP_NO_SSLv3,
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79 SSL_OP_NO_SSLv2,
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80 0,
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81 };
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0
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82
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83
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38
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84 ngx_int_t
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85 ngx_ssl_init(ngx_log_t *log)
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0
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86 {
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87 SSL_library_init();
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88 SSL_load_error_strings();
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90
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89
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90 #if (NGX_SSL_ENGINE)
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28
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91 ENGINE_load_builtin_engines();
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90
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92 #endif
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0
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93
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94 return NGX_OK;
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95 }
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96
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97
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38
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98 ngx_int_t
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96
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99 ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols)
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100 {
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101 ssl->ctx = SSL_CTX_new(SSLv23_server_method());
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102
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103 if (ssl->ctx == NULL) {
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104 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "SSL_CTX_new() failed");
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105 return NGX_ERROR;
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106 }
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107
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112
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108 /*
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109 * these options are needed on client side only:
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110 * SSL_OP_MICROSOFT_SESS_ID_BUG
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111 * SSL_OP_NETSCAPE_CHALLENGE_BUG
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112 * SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
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113 */
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114
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115 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG);
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116 SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER);
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117
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118 /* this option allow a potential SSL 2.0 rollback (CAN-2005-2969) */
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119 SSL_CTX_set_options(ssl->ctx, SSL_OP_MSIE_SSLV2_RSA_PADDING);
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120
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121 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLEAY_080_CLIENT_DH_BUG);
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122 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_D5_BUG);
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123 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_BLOCK_PADDING_BUG);
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124
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125 #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
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126 SSL_CTX_set_options(ssl->ctx, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
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127 #endif
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128
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96
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129
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130 if (ngx_ssl_protocols[protocols >> 1] != 0) {
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131 SSL_CTX_set_options(ssl->ctx, ngx_ssl_protocols[protocols >> 1]);
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132 }
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133
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134 SSL_CTX_set_mode(ssl->ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
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135
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136 SSL_CTX_set_read_ahead(ssl->ctx, 1);
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137
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138 return NGX_OK;
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139 }
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140
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141
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142 ngx_int_t
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112
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143 ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
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144 ngx_str_t *key)
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96
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145 {
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112
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146 if (ngx_conf_full_name(cf->cycle, cert) == NGX_ERROR) {
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96
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147 return NGX_ERROR;
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148 }
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149
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112
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150 if (SSL_CTX_use_certificate_chain_file(ssl->ctx, (char *) cert->data)
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96
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151 == 0)
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152 {
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153 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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112
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154 "SSL_CTX_use_certificate_chain_file(\"%s\") failed",
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155 cert->data);
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156 return NGX_ERROR;
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157 }
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158
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159 if (ngx_conf_full_name(cf->cycle, key) == NGX_ERROR) {
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160 return NGX_ERROR;
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161 }
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162
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163 if (SSL_CTX_use_PrivateKey_file(ssl->ctx, (char *) key->data,
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164 SSL_FILETYPE_PEM) == 0)
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165 {
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166 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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167 "SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
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96
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168 return NGX_ERROR;
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169 }
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170
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171 return NGX_OK;
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172 }
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173
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174
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175 ngx_int_t
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176 ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
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177 {
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108
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178 if (SSL_CTX_need_tmp_RSA(ssl->ctx) == 0) {
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179 return NGX_OK;
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180 }
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181
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96
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182 ssl->rsa512_key = RSA_generate_key(512, RSA_F4, NULL, NULL);
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183
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184 if (ssl->rsa512_key) {
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185 SSL_CTX_set_tmp_rsa(ssl->ctx, ssl->rsa512_key);
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186 return NGX_OK;
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187 }
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188
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189 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "RSA_generate_key(512) failed");
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190
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191 return NGX_ERROR;
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192 }
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193
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194
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195 ngx_int_t
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196 ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, ngx_uint_t flags)
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0
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197 {
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96
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198 ngx_ssl_connection_t *sc;
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0
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199
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96
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200 sc = ngx_pcalloc(c->pool, sizeof(ngx_ssl_connection_t));
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201 if (sc == NULL) {
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0
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202 return NGX_ERROR;
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203 }
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204
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92
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205 if (flags & NGX_SSL_BUFFER) {
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96
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206 sc->buffer = 1;
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92
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207
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96
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208 sc->buf = ngx_create_temp_buf(c->pool, NGX_SSL_BUFSIZE);
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209 if (sc->buf == NULL) {
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92
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210 return NGX_ERROR;
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211 }
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0
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212 }
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213
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96
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214 sc->connection = SSL_new(ssl->ctx);
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215
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96
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216 if (sc->connection == NULL) {
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0
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217 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_new() failed");
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218 return NGX_ERROR;
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219 }
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220
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96
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221 if (SSL_set_fd(sc->connection, c->fd) == 0) {
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0
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222 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_fd() failed");
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223 return NGX_ERROR;
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224 }
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225
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96
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226 SSL_set_accept_state(sc->connection);
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0
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227
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96
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228 c->ssl = sc;
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0
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229
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230 return NGX_OK;
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231 }
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232
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233
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96
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234 ngx_int_t
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235 ngx_ssl_handshake(ngx_connection_t *c)
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236 {
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237 int n, sslerr;
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238 ngx_err_t err;
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239
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240 n = SSL_do_handshake(c->ssl->connection);
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241
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242 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_do_handshake: %d", n);
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243
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244 if (n == 1) {
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245
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246 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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247 return NGX_ERROR;
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248 }
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249
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250 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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251 return NGX_ERROR;
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252 }
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253
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254 #if (NGX_DEBUG)
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255 {
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256 char buf[129], *s, *d;
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257 SSL_CIPHER *cipher;
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258
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259 cipher = SSL_get_current_cipher(c->ssl->connection);
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260
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261 if (cipher) {
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262 SSL_CIPHER_description(cipher, &buf[1], 128);
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263
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264 for (s = &buf[1], d = buf; *s; s++) {
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265 if (*s == ' ' && *d == ' ') {
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266 continue;
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267 }
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268
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269 if (*s == LF || *s == CR) {
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270 continue;
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271 }
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272
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273 *++d = *s;
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274 }
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275
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276 if (*d != ' ') {
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277 d++;
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278 }
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279
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280 *d = '\0';
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281
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282 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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283 "SSL: %s, cipher: \"%s\"",
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284 SSL_get_version(c->ssl->connection), &buf[1]);
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285
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286 if (SSL_session_reused(c->ssl->connection)) {
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287 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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288 "SSL reused session");
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289 }
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290
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291 } else {
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292 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
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293 "SSL no shared ciphers");
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294 }
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295 }
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296 #endif
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297
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298 c->ssl->handshaked = 1;
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299
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300 c->recv = ngx_ssl_recv;
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301 c->send = ngx_ssl_write;
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302 c->send_chain = ngx_ssl_send_chain;
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303
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304 return NGX_OK;
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305 }
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306
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307 sslerr = SSL_get_error(c->ssl->connection, n);
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308
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309 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
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310
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311 if (sslerr == SSL_ERROR_WANT_READ) {
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312 c->read->ready = 0;
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313 c->read->handler = ngx_ssl_handshake_handler;
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314
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315 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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316 return NGX_ERROR;
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317 }
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318
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319 return NGX_AGAIN;
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320 }
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321
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322 if (sslerr == SSL_ERROR_WANT_WRITE) {
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323 c->write->ready = 0;
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324 c->write->handler = ngx_ssl_handshake_handler;
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325
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326 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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327 return NGX_ERROR;
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328 }
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329
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330 return NGX_AGAIN;
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331 }
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332
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333 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
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334
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335 c->ssl->no_wait_shutdown = 1;
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336 c->ssl->no_send_shutdown = 1;
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337
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338 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
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339 ngx_log_error(NGX_LOG_INFO, c->log, err,
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340 "client closed connection in SSL handshake");
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341
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342 return NGX_ERROR;
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343 }
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344
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345 ngx_ssl_connection_error(c, sslerr, err, "SSL_do_handshake() failed");
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346
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347 return NGX_ERROR;
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348 }
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349
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350
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351 static void
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352 ngx_ssl_handshake_handler(ngx_event_t *ev)
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353 {
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354 ngx_connection_t *c;
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355
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356 c = ev->data;
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357
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98
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358 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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96
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359 "ssl handshake handler: %d", ev->write);
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360
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361 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
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362 return;
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363 }
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364
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365 c->ssl->handler(c);
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366 }
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367
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368
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38
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369 ssize_t
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370 ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size)
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0
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371 {
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38
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372 int n, bytes;
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373
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374 if (c->ssl->last == NGX_ERROR) {
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375 return NGX_ERROR;
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376 }
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377
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378 bytes = 0;
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0
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379
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38
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380 /*
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381 * SSL_read() may return data in parts, so try to read
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382 * until SSL_read() would return no data
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383 */
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384
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385 for ( ;; ) {
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0
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386
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92
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387 n = SSL_read(c->ssl->connection, buf, size);
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38
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388
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389 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n);
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0
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390
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38
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391 if (n > 0) {
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392 bytes += n;
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393 }
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394
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395 c->ssl->last = ngx_ssl_handle_recv(c, n);
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396
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397 if (c->ssl->last != NGX_OK) {
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28
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398
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38
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399 if (bytes) {
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400 return bytes;
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401
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28
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402 } else {
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38
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403 return c->ssl->last;
|
|
28
|
404 }
|
|
|
405 }
|
|
|
406
|
|
38
|
407 size -= n;
|
|
|
408
|
|
|
409 if (size == 0) {
|
|
|
410 return bytes;
|
|
|
411 }
|
|
|
412
|
|
|
413 buf += n;
|
|
|
414 }
|
|
|
415 }
|
|
|
416
|
|
|
417
|
|
|
418 static ngx_int_t
|
|
|
419 ngx_ssl_handle_recv(ngx_connection_t *c, int n)
|
|
|
420 {
|
|
96
|
421 int sslerr;
|
|
|
422 ngx_err_t err;
|
|
38
|
423
|
|
|
424 if (n > 0) {
|
|
28
|
425
|
|
22
|
426 if (c->ssl->saved_write_handler) {
|
|
|
427
|
|
58
|
428 c->write->handler = c->ssl->saved_write_handler;
|
|
22
|
429 c->ssl->saved_write_handler = NULL;
|
|
|
430 c->write->ready = 1;
|
|
|
431
|
|
|
432 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
433 return NGX_ERROR;
|
|
|
434 }
|
|
|
435
|
|
112
|
436 ngx_post_event(c->write, &ngx_posted_events);
|
|
22
|
437 }
|
|
|
438
|
|
38
|
439 return NGX_OK;
|
|
0
|
440 }
|
|
|
441
|
|
92
|
442 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
443
|
|
|
444 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
445
|
|
|
446 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
447
|
|
|
448 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
4
|
449 c->read->ready = 0;
|
|
0
|
450 return NGX_AGAIN;
|
|
|
451 }
|
|
|
452
|
|
|
453 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
88
|
454
|
|
96
|
455 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
456 "client started SSL renegotiation");
|
|
22
|
457
|
|
|
458 c->write->ready = 0;
|
|
|
459
|
|
|
460 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
461 return NGX_ERROR;
|
|
|
462 }
|
|
|
463
|
|
|
464 /*
|
|
|
465 * we do not set the timer because there is already the read event timer
|
|
|
466 */
|
|
|
467
|
|
|
468 if (c->ssl->saved_write_handler == NULL) {
|
|
58
|
469 c->ssl->saved_write_handler = c->write->handler;
|
|
|
470 c->write->handler = ngx_ssl_write_handler;
|
|
22
|
471 }
|
|
|
472
|
|
0
|
473 return NGX_AGAIN;
|
|
|
474 }
|
|
|
475
|
|
96
|
476 c->ssl->no_wait_shutdown = 1;
|
|
|
477 c->ssl->no_send_shutdown = 1;
|
|
0
|
478
|
|
|
479 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
96
|
480 ngx_log_error(NGX_LOG_INFO, c->log, err, "client closed connection");
|
|
0
|
481
|
|
|
482 return NGX_ERROR;
|
|
|
483 }
|
|
|
484
|
|
96
|
485 ngx_ssl_connection_error(c, sslerr, err, "SSL_read() failed");
|
|
0
|
486
|
|
|
487 return NGX_ERROR;
|
|
|
488 }
|
|
|
489
|
|
|
490
|
|
38
|
491 static void
|
|
|
492 ngx_ssl_write_handler(ngx_event_t *wev)
|
|
22
|
493 {
|
|
|
494 ngx_connection_t *c;
|
|
|
495
|
|
|
496 c = wev->data;
|
|
96
|
497
|
|
58
|
498 c->read->handler(c->read);
|
|
22
|
499 }
|
|
|
500
|
|
|
501
|
|
0
|
502 /*
|
|
|
503 * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer
|
|
22
|
504 * before the SSL_write() call to decrease a SSL overhead.
|
|
0
|
505 *
|
|
|
506 * Besides for protocols such as HTTP it is possible to always buffer
|
|
|
507 * the output to decrease a SSL overhead some more.
|
|
|
508 */
|
|
|
509
|
|
38
|
510 ngx_chain_t *
|
|
|
511 ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
|
|
0
|
512 {
|
|
|
513 int n;
|
|
|
514 ngx_uint_t flush;
|
|
|
515 ssize_t send, size;
|
|
|
516 ngx_buf_t *buf;
|
|
|
517
|
|
|
518 buf = c->ssl->buf;
|
|
|
519
|
|
|
520 if (in && in->next == NULL && !c->buffered && !c->ssl->buffer) {
|
|
|
521
|
|
|
522 /*
|
|
|
523 * we avoid a buffer copy if the incoming buf is a single,
|
|
|
524 * our buffer is empty, and we do not need to buffer the output
|
|
|
525 */
|
|
|
526
|
|
|
527 n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos);
|
|
|
528
|
|
|
529 if (n == NGX_ERROR) {
|
|
|
530 return NGX_CHAIN_ERROR;
|
|
|
531 }
|
|
|
532
|
|
62
|
533 if (n == NGX_AGAIN) {
|
|
|
534 c->buffered = 1;
|
|
|
535 return in;
|
|
0
|
536 }
|
|
|
537
|
|
|
538 in->buf->pos += n;
|
|
|
539
|
|
|
540 return in;
|
|
|
541 }
|
|
|
542
|
|
22
|
543
|
|
|
544 /* the maximum limit size is the maximum uint32_t value - the page size */
|
|
|
545
|
|
|
546 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) {
|
|
|
547 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
|
|
|
548 }
|
|
|
549
|
|
|
550
|
|
0
|
551 send = 0;
|
|
|
552 flush = (in == NULL) ? 1 : 0;
|
|
|
553
|
|
|
554 for ( ;; ) {
|
|
|
555
|
|
|
556 while (in && buf->last < buf->end) {
|
|
|
557 if (in->buf->last_buf) {
|
|
|
558 flush = 1;
|
|
|
559 }
|
|
|
560
|
|
|
561 if (ngx_buf_special(in->buf)) {
|
|
|
562 in = in->next;
|
|
|
563 continue;
|
|
|
564 }
|
|
|
565
|
|
|
566 size = in->buf->last - in->buf->pos;
|
|
|
567
|
|
|
568 if (size > buf->end - buf->last) {
|
|
|
569 size = buf->end - buf->last;
|
|
|
570 }
|
|
|
571
|
|
|
572 /*
|
|
|
573 * TODO: the taking in->buf->flush into account can be
|
|
|
574 * implemented using the limit on the higher level
|
|
|
575 */
|
|
|
576
|
|
|
577 if (send + size > limit) {
|
|
|
578 size = limit - send;
|
|
|
579 flush = 1;
|
|
|
580 }
|
|
|
581
|
|
|
582 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
583 "SSL buf copy: %d", size);
|
|
|
584
|
|
|
585 ngx_memcpy(buf->last, in->buf->pos, size);
|
|
|
586
|
|
|
587 buf->last += size;
|
|
|
588
|
|
|
589 in->buf->pos += size;
|
|
|
590 if (in->buf->pos == in->buf->last) {
|
|
|
591 in = in->next;
|
|
|
592 }
|
|
|
593 }
|
|
|
594
|
|
|
595 size = buf->last - buf->pos;
|
|
|
596
|
|
|
597 if (!flush && buf->last < buf->end && c->ssl->buffer) {
|
|
|
598 break;
|
|
|
599 }
|
|
|
600
|
|
|
601 n = ngx_ssl_write(c, buf->pos, size);
|
|
|
602
|
|
|
603 if (n == NGX_ERROR) {
|
|
|
604 return NGX_CHAIN_ERROR;
|
|
|
605 }
|
|
|
606
|
|
60
|
607 if (n == NGX_AGAIN) {
|
|
|
608 c->buffered = 1;
|
|
|
609 return in;
|
|
0
|
610 }
|
|
|
611
|
|
|
612 buf->pos += n;
|
|
|
613 send += n;
|
|
|
614 c->sent += n;
|
|
|
615
|
|
|
616 if (n < size) {
|
|
|
617 break;
|
|
|
618 }
|
|
|
619
|
|
|
620 if (buf->pos == buf->last) {
|
|
|
621 buf->pos = buf->start;
|
|
|
622 buf->last = buf->start;
|
|
|
623 }
|
|
|
624
|
|
|
625 if (in == NULL || send == limit) {
|
|
|
626 break;
|
|
|
627 }
|
|
|
628 }
|
|
|
629
|
|
|
630 c->buffered = (buf->pos < buf->last) ? 1 : 0;
|
|
|
631
|
|
|
632 return in;
|
|
|
633 }
|
|
|
634
|
|
|
635
|
|
88
|
636 ssize_t
|
|
38
|
637 ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size)
|
|
0
|
638 {
|
|
96
|
639 int n, sslerr;
|
|
|
640 ngx_err_t err;
|
|
0
|
641
|
|
|
642 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size);
|
|
|
643
|
|
92
|
644 n = SSL_write(c->ssl->connection, data, size);
|
|
0
|
645
|
|
|
646 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n);
|
|
|
647
|
|
|
648 if (n > 0) {
|
|
88
|
649
|
|
22
|
650 if (c->ssl->saved_read_handler) {
|
|
|
651
|
|
58
|
652 c->read->handler = c->ssl->saved_read_handler;
|
|
22
|
653 c->ssl->saved_read_handler = NULL;
|
|
|
654 c->read->ready = 1;
|
|
|
655
|
|
|
656 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
657 return NGX_ERROR;
|
|
|
658 }
|
|
|
659
|
|
112
|
660 ngx_post_event(c->read, &ngx_posted_events);
|
|
22
|
661 }
|
|
|
662
|
|
0
|
663 return n;
|
|
|
664 }
|
|
|
665
|
|
92
|
666 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
667
|
|
|
668 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
669
|
|
|
670 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
671
|
|
|
672 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
673 c->write->ready = 0;
|
|
|
674 return NGX_AGAIN;
|
|
|
675 }
|
|
|
676
|
|
|
677 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
2
|
678
|
|
96
|
679 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
680 "client started SSL renegotiation");
|
|
22
|
681
|
|
|
682 c->read->ready = 0;
|
|
|
683
|
|
|
684 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
685 return NGX_ERROR;
|
|
|
686 }
|
|
|
687
|
|
|
688 /*
|
|
|
689 * we do not set the timer because there is already
|
|
|
690 * the write event timer
|
|
|
691 */
|
|
|
692
|
|
|
693 if (c->ssl->saved_read_handler == NULL) {
|
|
58
|
694 c->ssl->saved_read_handler = c->read->handler;
|
|
|
695 c->read->handler = ngx_ssl_read_handler;
|
|
22
|
696 }
|
|
|
697
|
|
0
|
698 return NGX_AGAIN;
|
|
|
699 }
|
|
|
700
|
|
96
|
701 c->ssl->no_wait_shutdown = 1;
|
|
|
702 c->ssl->no_send_shutdown = 1;
|
|
92
|
703
|
|
96
|
704 ngx_ssl_connection_error(c, sslerr, err, "SSL_write() failed");
|
|
0
|
705
|
|
|
706 return NGX_ERROR;
|
|
|
707 }
|
|
|
708
|
|
|
709
|
|
38
|
710 static void
|
|
|
711 ngx_ssl_read_handler(ngx_event_t *rev)
|
|
22
|
712 {
|
|
|
713 ngx_connection_t *c;
|
|
|
714
|
|
|
715 c = rev->data;
|
|
96
|
716
|
|
58
|
717 c->write->handler(c->write);
|
|
22
|
718 }
|
|
|
719
|
|
|
720
|
|
38
|
721 ngx_int_t
|
|
|
722 ngx_ssl_shutdown(ngx_connection_t *c)
|
|
0
|
723 {
|
|
22
|
724 int n, sslerr, mode;
|
|
0
|
725 ngx_uint_t again;
|
|
|
726
|
|
96
|
727 if (c->read->timedout) {
|
|
|
728 mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
|
|
0
|
729
|
|
96
|
730 } else {
|
|
|
731 mode = SSL_get_shutdown(c->ssl->connection);
|
|
22
|
732
|
|
96
|
733 if (c->ssl->no_wait_shutdown) {
|
|
|
734 mode |= SSL_RECEIVED_SHUTDOWN;
|
|
0
|
735 }
|
|
|
736
|
|
96
|
737 if (c->ssl->no_send_shutdown) {
|
|
|
738 mode |= SSL_SENT_SHUTDOWN;
|
|
0
|
739 }
|
|
|
740 }
|
|
|
741
|
|
96
|
742 SSL_set_shutdown(c->ssl->connection, mode);
|
|
|
743
|
|
0
|
744 again = 0;
|
|
10
|
745 #if (NGX_SUPPRESS_WARN)
|
|
|
746 sslerr = 0;
|
|
|
747 #endif
|
|
0
|
748
|
|
|
749 for ( ;; ) {
|
|
92
|
750 n = SSL_shutdown(c->ssl->connection);
|
|
0
|
751
|
|
|
752 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n);
|
|
|
753
|
|
22
|
754 if (n == 1 || (n == 0 && c->read->timedout)) {
|
|
92
|
755 SSL_free(c->ssl->connection);
|
|
22
|
756 c->ssl = NULL;
|
|
92
|
757
|
|
22
|
758 return NGX_OK;
|
|
|
759 }
|
|
|
760
|
|
0
|
761 if (n == 0) {
|
|
|
762 again = 1;
|
|
|
763 break;
|
|
|
764 }
|
|
|
765
|
|
|
766 break;
|
|
|
767 }
|
|
|
768
|
|
|
769 if (!again) {
|
|
92
|
770 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
771
|
|
|
772 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
773 "SSL_get_error: %d", sslerr);
|
|
|
774 }
|
|
|
775
|
|
|
776 if (again || sslerr == SSL_ERROR_WANT_READ) {
|
|
|
777
|
|
22
|
778 ngx_add_timer(c->read, 30000);
|
|
0
|
779
|
|
|
780 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
781 return NGX_ERROR;
|
|
|
782 }
|
|
|
783
|
|
|
784 return NGX_AGAIN;
|
|
|
785 }
|
|
|
786
|
|
|
787 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
788
|
|
|
789 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
790 return NGX_ERROR;
|
|
|
791 }
|
|
|
792
|
|
|
793 return NGX_AGAIN;
|
|
|
794 }
|
|
|
795
|
|
|
796 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_shutdown() failed");
|
|
|
797
|
|
92
|
798 SSL_free(c->ssl->connection);
|
|
|
799 c->ssl = NULL;
|
|
|
800
|
|
0
|
801 return NGX_ERROR;
|
|
|
802 }
|
|
|
803
|
|
|
804
|
|
96
|
805 static void
|
|
|
806 ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
|
|
|
807 char *text)
|
|
|
808 {
|
|
|
809 ngx_uint_t level;
|
|
|
810
|
|
|
811 level = NGX_LOG_CRIT;
|
|
|
812
|
|
|
813 if (sslerr == SSL_ERROR_SYSCALL) {
|
|
|
814
|
|
|
815 if (err == NGX_ECONNRESET
|
|
|
816 || err == NGX_EPIPE
|
|
|
817 || err == NGX_ENOTCONN
|
|
|
818 || err == NGX_ECONNREFUSED
|
|
|
819 || err == NGX_EHOSTUNREACH)
|
|
|
820 {
|
|
|
821 switch (c->log_error) {
|
|
|
822
|
|
|
823 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
824 case NGX_ERROR_INFO:
|
|
|
825 level = NGX_LOG_INFO;
|
|
|
826 break;
|
|
|
827
|
|
|
828 case NGX_ERROR_ERR:
|
|
|
829 level = NGX_LOG_ERR;
|
|
|
830 break;
|
|
|
831
|
|
|
832 default:
|
|
|
833 break;
|
|
|
834 }
|
|
|
835 }
|
|
|
836 }
|
|
|
837
|
|
|
838 ngx_ssl_error(level, c->log, err, text);
|
|
|
839 }
|
|
|
840
|
|
|
841
|
|
38
|
842 void
|
|
|
843 ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...)
|
|
0
|
844 {
|
|
96
|
845 u_long n;
|
|
|
846 va_list args;
|
|
10
|
847 u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last;
|
|
|
848
|
|
|
849 last = errstr + NGX_MAX_CONF_ERRSTR;
|
|
0
|
850
|
|
|
851 va_start(args, fmt);
|
|
10
|
852 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
|
|
0
|
853 va_end(args);
|
|
|
854
|
|
96
|
855 p = ngx_cpystrn(p, (u_char *) " (SSL:", last - p);
|
|
|
856
|
|
|
857 while (p < last && (n = ERR_get_error())) {
|
|
|
858
|
|
|
859 *p++ = ' ';
|
|
0
|
860
|
|
96
|
861 ERR_error_string_n(n, (char *) p, last - p);
|
|
|
862
|
|
|
863 while (p < last && *p) {
|
|
|
864 p++;
|
|
|
865 }
|
|
|
866 }
|
|
0
|
867
|
|
|
868 ngx_log_error(level, log, err, "%s)", errstr);
|
|
|
869 }
|
|
58
|
870
|
|
|
871
|
|
|
872 void
|
|
|
873 ngx_ssl_cleanup_ctx(void *data)
|
|
|
874 {
|
|
96
|
875 ngx_ssl_t *ssl = data;
|
|
58
|
876
|
|
108
|
877 if (ssl->rsa512_key) {
|
|
|
878 RSA_free(ssl->rsa512_key);
|
|
|
879 }
|
|
|
880
|
|
96
|
881 SSL_CTX_free(ssl->ctx);
|
|
58
|
882 }
|
|
90
|
883
|
|
|
884
|
|
|
885 static void *
|
|
|
886 ngx_openssl_create_conf(ngx_cycle_t *cycle)
|
|
|
887 {
|
|
|
888 ngx_openssl_conf_t *oscf;
|
|
|
889
|
|
|
890 oscf = ngx_pcalloc(cycle->pool, sizeof(ngx_openssl_conf_t));
|
|
|
891 if (oscf == NULL) {
|
|
|
892 return NGX_CONF_ERROR;
|
|
|
893 }
|
|
|
894
|
|
|
895 /*
|
|
|
896 * set by ngx_pcalloc():
|
|
|
897 *
|
|
|
898 * oscf->engine.len = 0;
|
|
|
899 * oscf->engine.data = NULL;
|
|
|
900 */
|
|
|
901
|
|
|
902 return oscf;
|
|
|
903 }
|
|
|
904
|
|
|
905
|
|
|
906 static char *
|
|
|
907 ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
908 {
|
|
|
909 #if (NGX_SSL_ENGINE)
|
|
|
910 ngx_openssl_conf_t *oscf = conf;
|
|
|
911
|
|
|
912 ENGINE *engine;
|
|
|
913
|
|
|
914 if (oscf->engine.len == 0) {
|
|
|
915 return NGX_CONF_OK;
|
|
|
916 }
|
|
|
917
|
|
|
918 engine = ENGINE_by_id((const char *) oscf->engine.data);
|
|
|
919
|
|
|
920 if (engine == NULL) {
|
|
|
921 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
922 "ENGINE_by_id(\"%V\") failed", &oscf->engine);
|
|
|
923 return NGX_CONF_ERROR;
|
|
|
924 }
|
|
|
925
|
|
|
926 if (ENGINE_set_default(engine, ENGINE_METHOD_ALL) == 0) {
|
|
|
927 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
928 "ENGINE_set_default(\"%V\", ENGINE_METHOD_ALL) failed",
|
|
|
929 &oscf->engine);
|
|
|
930 return NGX_CONF_ERROR;
|
|
|
931 }
|
|
|
932
|
|
|
933 ENGINE_free(engine);
|
|
|
934
|
|
|
935 #endif
|
|
|
936
|
|
|
937 return NGX_CONF_OK;
|
|
|
938 }
|
|
|
939
|
|
|
940
|
|
|
941 #if !(NGX_SSL_ENGINE)
|
|
|
942
|
|
|
943 static char *
|
|
|
944 ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
945 {
|
|
|
946 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
112
|
947 "\"ssl_engine\" directive is available only in "
|
|
|
948 "OpenSSL 0.9.7 and higher,");
|
|
90
|
949
|
|
|
950 return NGX_CONF_ERROR;
|
|
|
951 }
|
|
|
952
|
|
|
953 #endif
|
