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