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