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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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126
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21 static void ngx_ssl_shutdown_handler(ngx_event_t *ev);
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96
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22 static void ngx_ssl_connection_error(ngx_connection_t *c, int sslerr,
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23 ngx_err_t err, char *text);
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90
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24 static void *ngx_openssl_create_conf(ngx_cycle_t *cycle);
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25 static char *ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf);
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120
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26 static void ngx_openssl_exit(ngx_cycle_t *cycle);
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90
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27
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28 #if !(NGX_SSL_ENGINE)
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29 static char *ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd,
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30 void *conf);
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31 #endif
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32
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33
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34 static ngx_command_t ngx_openssl_commands[] = {
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35
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36 { ngx_string("ssl_engine"),
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37 NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1,
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38 #if (NGX_SSL_ENGINE)
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39 ngx_conf_set_str_slot,
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40 #else
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41 ngx_openssl_noengine,
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42 #endif
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43 0,
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44 offsetof(ngx_openssl_conf_t, engine),
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45 NULL },
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46
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47 ngx_null_command
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48 };
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49
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50
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51 static ngx_core_module_t ngx_openssl_module_ctx = {
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52 ngx_string("openssl"),
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53 ngx_openssl_create_conf,
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54 ngx_openssl_init_conf
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126
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55 };
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90
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56
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57
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58 ngx_module_t ngx_openssl_module = {
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59 NGX_MODULE_V1,
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60 &ngx_openssl_module_ctx, /* module context */
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61 ngx_openssl_commands, /* module directives */
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62 NGX_CORE_MODULE, /* module type */
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63 NULL, /* init master */
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64 NULL, /* init module */
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65 NULL, /* init process */
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66 NULL, /* init thread */
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67 NULL, /* exit thread */
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68 NULL, /* exit process */
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120
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69 ngx_openssl_exit, /* exit master */
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90
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70 NGX_MODULE_V1_PADDING
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96
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71 };
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72
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73
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74 static long ngx_ssl_protocols[] = {
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75 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
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76 SSL_OP_NO_SSLv3|SSL_OP_NO_TLSv1,
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77 SSL_OP_NO_SSLv2|SSL_OP_NO_TLSv1,
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78 SSL_OP_NO_TLSv1,
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79 SSL_OP_NO_SSLv2|SSL_OP_NO_SSLv3,
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80 SSL_OP_NO_SSLv3,
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81 SSL_OP_NO_SSLv2,
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82 0,
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83 };
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0
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84
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85
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38
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86 ngx_int_t
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87 ngx_ssl_init(ngx_log_t *log)
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0
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88 {
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89 SSL_library_init();
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90 SSL_load_error_strings();
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90
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91
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92 #if (NGX_SSL_ENGINE)
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28
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93 ENGINE_load_builtin_engines();
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90
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94 #endif
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0
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95
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96 return NGX_OK;
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97 }
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98
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99
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38
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100 ngx_int_t
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96
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101 ngx_ssl_create(ngx_ssl_t *ssl, ngx_uint_t protocols)
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102 {
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126
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103 ssl->ctx = SSL_CTX_new(SSLv23_method());
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96
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104
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105 if (ssl->ctx == NULL) {
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106 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "SSL_CTX_new() failed");
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107 return NGX_ERROR;
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108 }
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109
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126
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110 /* client side options */
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111
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112 SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_SESS_ID_BUG);
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113 SSL_CTX_set_options(ssl->ctx, SSL_OP_NETSCAPE_CHALLENGE_BUG);
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114 SSL_CTX_set_options(ssl->ctx, SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG);
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115
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116 /* server side options */
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112
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117
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118 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG);
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119 SSL_CTX_set_options(ssl->ctx, SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER);
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120
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121 /* this option allow a potential SSL 2.0 rollback (CAN-2005-2969) */
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122 SSL_CTX_set_options(ssl->ctx, SSL_OP_MSIE_SSLV2_RSA_PADDING);
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123
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124 SSL_CTX_set_options(ssl->ctx, SSL_OP_SSLEAY_080_CLIENT_DH_BUG);
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125 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_D5_BUG);
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126 SSL_CTX_set_options(ssl->ctx, SSL_OP_TLS_BLOCK_PADDING_BUG);
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127
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128 #ifdef SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
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129 SSL_CTX_set_options(ssl->ctx, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
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130 #endif
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131
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96
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132
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133 if (ngx_ssl_protocols[protocols >> 1] != 0) {
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134 SSL_CTX_set_options(ssl->ctx, ngx_ssl_protocols[protocols >> 1]);
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135 }
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136
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137 SSL_CTX_set_mode(ssl->ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
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138
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139 SSL_CTX_set_read_ahead(ssl->ctx, 1);
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140
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141 return NGX_OK;
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142 }
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143
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144
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145 ngx_int_t
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112
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146 ngx_ssl_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert,
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147 ngx_str_t *key)
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96
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148 {
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112
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149 if (ngx_conf_full_name(cf->cycle, cert) == NGX_ERROR) {
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96
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150 return NGX_ERROR;
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151 }
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152
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112
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153 if (SSL_CTX_use_certificate_chain_file(ssl->ctx, (char *) cert->data)
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96
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154 == 0)
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155 {
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156 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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112
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157 "SSL_CTX_use_certificate_chain_file(\"%s\") failed",
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158 cert->data);
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159 return NGX_ERROR;
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160 }
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161
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162 if (ngx_conf_full_name(cf->cycle, key) == NGX_ERROR) {
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163 return NGX_ERROR;
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164 }
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165
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166 if (SSL_CTX_use_PrivateKey_file(ssl->ctx, (char *) key->data,
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167 SSL_FILETYPE_PEM) == 0)
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168 {
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169 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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170 "SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
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96
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171 return NGX_ERROR;
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172 }
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173
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174 return NGX_OK;
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175 }
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176
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177
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178 ngx_int_t
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179 ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
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180 {
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108
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181 if (SSL_CTX_need_tmp_RSA(ssl->ctx) == 0) {
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182 return NGX_OK;
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183 }
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184
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96
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185 ssl->rsa512_key = RSA_generate_key(512, RSA_F4, NULL, NULL);
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186
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187 if (ssl->rsa512_key) {
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188 SSL_CTX_set_tmp_rsa(ssl->ctx, ssl->rsa512_key);
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189 return NGX_OK;
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190 }
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191
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192 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "RSA_generate_key(512) failed");
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193
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194 return NGX_ERROR;
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195 }
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196
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197
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198 ngx_int_t
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199 ngx_ssl_create_connection(ngx_ssl_t *ssl, ngx_connection_t *c, ngx_uint_t flags)
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126
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200 {
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96
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201 ngx_ssl_connection_t *sc;
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0
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202
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96
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203 sc = ngx_pcalloc(c->pool, sizeof(ngx_ssl_connection_t));
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204 if (sc == NULL) {
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0
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205 return NGX_ERROR;
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206 }
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207
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92
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208 if (flags & NGX_SSL_BUFFER) {
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96
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209 sc->buffer = 1;
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92
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210
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96
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211 sc->buf = ngx_create_temp_buf(c->pool, NGX_SSL_BUFSIZE);
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212 if (sc->buf == NULL) {
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92
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213 return NGX_ERROR;
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214 }
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0
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215 }
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216
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96
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217 sc->connection = SSL_new(ssl->ctx);
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0
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218
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96
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219 if (sc->connection == NULL) {
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0
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220 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_new() failed");
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221 return NGX_ERROR;
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222 }
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223
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96
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224 if (SSL_set_fd(sc->connection, c->fd) == 0) {
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0
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225 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_fd() failed");
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226 return NGX_ERROR;
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227 }
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228
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126
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229 if (flags & NGX_SSL_CLIENT) {
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230 SSL_set_connect_state(sc->connection);
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231
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232 } else {
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233 SSL_set_accept_state(sc->connection);
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234 }
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0
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235
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96
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236 c->ssl = sc;
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0
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237
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238 return NGX_OK;
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239 }
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240
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241
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96
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242 ngx_int_t
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126
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243 ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session)
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244 {
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245 if (session) {
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246 if (SSL_set_session(c->ssl->connection, session) == 0) {
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247 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_session() failed");
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248 return NGX_ERROR;
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249 }
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250 }
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251
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252 return NGX_OK;
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253 }
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254
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255
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256 ngx_int_t
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96
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257 ngx_ssl_handshake(ngx_connection_t *c)
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258 {
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259 int n, sslerr;
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260 ngx_err_t err;
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261
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262 n = SSL_do_handshake(c->ssl->connection);
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263
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126
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264 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_do_handshake: %d", n);
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96
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265
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266 if (n == 1) {
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267
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268 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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269 return NGX_ERROR;
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270 }
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271
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272 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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273 return NGX_ERROR;
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274 }
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275
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276 #if (NGX_DEBUG)
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277 {
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278 char buf[129], *s, *d;
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279 SSL_CIPHER *cipher;
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280
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281 cipher = SSL_get_current_cipher(c->ssl->connection);
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282
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283 if (cipher) {
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284 SSL_CIPHER_description(cipher, &buf[1], 128);
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285
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286 for (s = &buf[1], d = buf; *s; s++) {
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287 if (*s == ' ' && *d == ' ') {
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288 continue;
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289 }
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290
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291 if (*s == LF || *s == CR) {
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292 continue;
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293 }
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294
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295 *++d = *s;
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296 }
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297
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298 if (*d != ' ') {
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299 d++;
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300 }
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301
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302 *d = '\0';
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303
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304 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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305 "SSL: %s, cipher: \"%s\"",
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126
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306 SSL_get_version(c->ssl->connection), &buf[1]);
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96
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307
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308 if (SSL_session_reused(c->ssl->connection)) {
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309 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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310 "SSL reused session");
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311 }
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312
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313 } else {
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314 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
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126
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315 "SSL no shared ciphers");
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96
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316 }
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317 }
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318 #endif
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319
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320 c->ssl->handshaked = 1;
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321
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322 c->recv = ngx_ssl_recv;
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323 c->send = ngx_ssl_write;
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126
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324 c->recv_chain = ngx_ssl_recv_chain;
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325 c->send_chain = ngx_ssl_send_chain;
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96
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326
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327 return NGX_OK;
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328 }
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329
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330 sslerr = SSL_get_error(c->ssl->connection, n);
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331
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332 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
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333
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334 if (sslerr == SSL_ERROR_WANT_READ) {
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335 c->read->ready = 0;
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336 c->read->handler = ngx_ssl_handshake_handler;
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337
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338 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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339 return NGX_ERROR;
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340 }
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341
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342 return NGX_AGAIN;
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343 }
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344
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345 if (sslerr == SSL_ERROR_WANT_WRITE) {
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346 c->write->ready = 0;
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347 c->write->handler = ngx_ssl_handshake_handler;
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348
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349 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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350 return NGX_ERROR;
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351 }
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352
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353 return NGX_AGAIN;
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354 }
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355
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356 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
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357
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358 c->ssl->no_wait_shutdown = 1;
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359 c->ssl->no_send_shutdown = 1;
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360
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361 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
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362 ngx_log_error(NGX_LOG_INFO, c->log, err,
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126
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363 "peer closed connection in SSL handshake");
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96
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364
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365 return NGX_ERROR;
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366 }
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367
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368 ngx_ssl_connection_error(c, sslerr, err, "SSL_do_handshake() failed");
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369
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370 return NGX_ERROR;
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371 }
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372
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373
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374 static void
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375 ngx_ssl_handshake_handler(ngx_event_t *ev)
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376 {
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377 ngx_connection_t *c;
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378
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379 c = ev->data;
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380
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98
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381 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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126
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382 "SSL handshake handler: %d", ev->write);
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96
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383
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384 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
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385 return;
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386 }
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387
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388 c->ssl->handler(c);
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389 }
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390
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391
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38
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392 ssize_t
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126
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393 ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl)
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394 {
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395 ssize_t n, bytes;
|
|
|
396 ngx_buf_t *b;
|
|
|
397
|
|
|
398 bytes = 0;
|
|
|
399
|
|
|
400 while (cl) {
|
|
|
401 b = cl->buf;
|
|
|
402
|
|
|
403 n = ngx_ssl_recv(c, b->last, b->end - b->last);
|
|
|
404
|
|
|
405 if (n > 0) {
|
|
|
406 b->last += n;
|
|
|
407 bytes += n;
|
|
|
408
|
|
|
409 if (b->last == b->end) {
|
|
|
410 cl = cl->next;
|
|
|
411 }
|
|
|
412
|
|
|
413 continue;
|
|
|
414 }
|
|
|
415
|
|
|
416 if (bytes) {
|
|
|
417 return bytes;
|
|
|
418 }
|
|
|
419
|
|
|
420 return n;
|
|
|
421 }
|
|
|
422
|
|
|
423 return bytes;
|
|
|
424 }
|
|
|
425
|
|
|
426
|
|
|
427 ssize_t
|
|
38
|
428 ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
429 {
|
|
38
|
430 int n, bytes;
|
|
|
431
|
|
|
432 if (c->ssl->last == NGX_ERROR) {
|
|
|
433 return NGX_ERROR;
|
|
|
434 }
|
|
|
435
|
|
126
|
436 if (c->ssl->last == NGX_DONE) {
|
|
|
437 return 0;
|
|
|
438 }
|
|
|
439
|
|
38
|
440 bytes = 0;
|
|
0
|
441
|
|
38
|
442 /*
|
|
|
443 * SSL_read() may return data in parts, so try to read
|
|
|
444 * until SSL_read() would return no data
|
|
|
445 */
|
|
|
446
|
|
|
447 for ( ;; ) {
|
|
0
|
448
|
|
92
|
449 n = SSL_read(c->ssl->connection, buf, size);
|
|
38
|
450
|
|
126
|
451 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n);
|
|
0
|
452
|
|
38
|
453 if (n > 0) {
|
|
|
454 bytes += n;
|
|
|
455 }
|
|
|
456
|
|
|
457 c->ssl->last = ngx_ssl_handle_recv(c, n);
|
|
|
458
|
|
|
459 if (c->ssl->last != NGX_OK) {
|
|
28
|
460
|
|
38
|
461 if (bytes) {
|
|
|
462 return bytes;
|
|
126
|
463 }
|
|
38
|
464
|
|
126
|
465 if (c->ssl->last == NGX_DONE) {
|
|
|
466 return 0;
|
|
28
|
467 }
|
|
126
|
468
|
|
|
469 return c->ssl->last;
|
|
28
|
470 }
|
|
|
471
|
|
38
|
472 size -= n;
|
|
|
473
|
|
|
474 if (size == 0) {
|
|
|
475 return bytes;
|
|
|
476 }
|
|
|
477
|
|
|
478 buf += n;
|
|
|
479 }
|
|
|
480 }
|
|
|
481
|
|
|
482
|
|
|
483 static ngx_int_t
|
|
|
484 ngx_ssl_handle_recv(ngx_connection_t *c, int n)
|
|
|
485 {
|
|
96
|
486 int sslerr;
|
|
|
487 ngx_err_t err;
|
|
38
|
488
|
|
|
489 if (n > 0) {
|
|
28
|
490
|
|
22
|
491 if (c->ssl->saved_write_handler) {
|
|
|
492
|
|
58
|
493 c->write->handler = c->ssl->saved_write_handler;
|
|
22
|
494 c->ssl->saved_write_handler = NULL;
|
|
|
495 c->write->ready = 1;
|
|
|
496
|
|
|
497 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
498 return NGX_ERROR;
|
|
|
499 }
|
|
|
500
|
|
112
|
501 ngx_post_event(c->write, &ngx_posted_events);
|
|
22
|
502 }
|
|
|
503
|
|
38
|
504 return NGX_OK;
|
|
0
|
505 }
|
|
|
506
|
|
92
|
507 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
508
|
|
|
509 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
510
|
|
|
511 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
512
|
|
|
513 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
4
|
514 c->read->ready = 0;
|
|
0
|
515 return NGX_AGAIN;
|
|
|
516 }
|
|
|
517
|
|
|
518 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
88
|
519
|
|
96
|
520 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
521 "peer started SSL renegotiation");
|
|
22
|
522
|
|
|
523 c->write->ready = 0;
|
|
|
524
|
|
|
525 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
526 return NGX_ERROR;
|
|
|
527 }
|
|
|
528
|
|
|
529 /*
|
|
|
530 * we do not set the timer because there is already the read event timer
|
|
|
531 */
|
|
|
532
|
|
|
533 if (c->ssl->saved_write_handler == NULL) {
|
|
58
|
534 c->ssl->saved_write_handler = c->write->handler;
|
|
|
535 c->write->handler = ngx_ssl_write_handler;
|
|
22
|
536 }
|
|
|
537
|
|
0
|
538 return NGX_AGAIN;
|
|
|
539 }
|
|
|
540
|
|
96
|
541 c->ssl->no_wait_shutdown = 1;
|
|
|
542 c->ssl->no_send_shutdown = 1;
|
|
0
|
543
|
|
|
544 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
126
|
545 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
546 "peer shutdown SSL cleanly");
|
|
|
547 return NGX_DONE;
|
|
0
|
548 }
|
|
|
549
|
|
96
|
550 ngx_ssl_connection_error(c, sslerr, err, "SSL_read() failed");
|
|
0
|
551
|
|
|
552 return NGX_ERROR;
|
|
|
553 }
|
|
|
554
|
|
|
555
|
|
38
|
556 static void
|
|
|
557 ngx_ssl_write_handler(ngx_event_t *wev)
|
|
22
|
558 {
|
|
|
559 ngx_connection_t *c;
|
|
|
560
|
|
|
561 c = wev->data;
|
|
96
|
562
|
|
58
|
563 c->read->handler(c->read);
|
|
22
|
564 }
|
|
|
565
|
|
|
566
|
|
0
|
567 /*
|
|
|
568 * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer
|
|
22
|
569 * before the SSL_write() call to decrease a SSL overhead.
|
|
0
|
570 *
|
|
|
571 * Besides for protocols such as HTTP it is possible to always buffer
|
|
|
572 * the output to decrease a SSL overhead some more.
|
|
|
573 */
|
|
|
574
|
|
38
|
575 ngx_chain_t *
|
|
|
576 ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
|
|
0
|
577 {
|
|
|
578 int n;
|
|
|
579 ngx_uint_t flush;
|
|
|
580 ssize_t send, size;
|
|
|
581 ngx_buf_t *buf;
|
|
|
582
|
|
126
|
583 if (!c->ssl->buffer || (in && in->next == NULL && !c->buffered)) {
|
|
0
|
584
|
|
|
585 /*
|
|
126
|
586 * we avoid a buffer copy if
|
|
|
587 * we do not need to buffer the output
|
|
|
588 * or the incoming buf is a single and our buffer is empty
|
|
0
|
589 */
|
|
|
590
|
|
126
|
591 while (in) {
|
|
|
592 if (ngx_buf_special(in->buf)) {
|
|
|
593 in = in->next;
|
|
|
594 continue;
|
|
|
595 }
|
|
0
|
596
|
|
126
|
597 n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos);
|
|
|
598
|
|
|
599 if (n == NGX_ERROR) {
|
|
|
600 return NGX_CHAIN_ERROR;
|
|
|
601 }
|
|
0
|
602
|
|
126
|
603 if (n == NGX_AGAIN) {
|
|
|
604 c->buffered = 1;
|
|
|
605 return in;
|
|
|
606 }
|
|
|
607
|
|
|
608 in->buf->pos += n;
|
|
|
609
|
|
|
610 if (in->buf->pos == in->buf->last) {
|
|
|
611 in = in->next;
|
|
|
612 }
|
|
0
|
613 }
|
|
|
614
|
|
|
615 return in;
|
|
|
616 }
|
|
|
617
|
|
22
|
618
|
|
|
619 /* the maximum limit size is the maximum uint32_t value - the page size */
|
|
|
620
|
|
|
621 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) {
|
|
|
622 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
|
|
|
623 }
|
|
|
624
|
|
|
625
|
|
126
|
626 buf = c->ssl->buf;
|
|
0
|
627 send = 0;
|
|
|
628 flush = (in == NULL) ? 1 : 0;
|
|
|
629
|
|
|
630 for ( ;; ) {
|
|
|
631
|
|
|
632 while (in && buf->last < buf->end) {
|
|
|
633 if (in->buf->last_buf) {
|
|
|
634 flush = 1;
|
|
|
635 }
|
|
|
636
|
|
|
637 if (ngx_buf_special(in->buf)) {
|
|
|
638 in = in->next;
|
|
|
639 continue;
|
|
|
640 }
|
|
|
641
|
|
|
642 size = in->buf->last - in->buf->pos;
|
|
|
643
|
|
|
644 if (size > buf->end - buf->last) {
|
|
|
645 size = buf->end - buf->last;
|
|
|
646 }
|
|
|
647
|
|
|
648 /*
|
|
|
649 * TODO: the taking in->buf->flush into account can be
|
|
|
650 * implemented using the limit on the higher level
|
|
|
651 */
|
|
|
652
|
|
|
653 if (send + size > limit) {
|
|
126
|
654 size = (ssize_t) (limit - send);
|
|
0
|
655 flush = 1;
|
|
|
656 }
|
|
|
657
|
|
|
658 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
659 "SSL buf copy: %d", size);
|
|
|
660
|
|
|
661 ngx_memcpy(buf->last, in->buf->pos, size);
|
|
|
662
|
|
|
663 buf->last += size;
|
|
|
664
|
|
|
665 in->buf->pos += size;
|
|
126
|
666
|
|
0
|
667 if (in->buf->pos == in->buf->last) {
|
|
|
668 in = in->next;
|
|
|
669 }
|
|
|
670 }
|
|
|
671
|
|
|
672 size = buf->last - buf->pos;
|
|
|
673
|
|
|
674 if (!flush && buf->last < buf->end && c->ssl->buffer) {
|
|
|
675 break;
|
|
|
676 }
|
|
|
677
|
|
|
678 n = ngx_ssl_write(c, buf->pos, size);
|
|
|
679
|
|
|
680 if (n == NGX_ERROR) {
|
|
|
681 return NGX_CHAIN_ERROR;
|
|
|
682 }
|
|
|
683
|
|
60
|
684 if (n == NGX_AGAIN) {
|
|
|
685 c->buffered = 1;
|
|
|
686 return in;
|
|
0
|
687 }
|
|
|
688
|
|
|
689 buf->pos += n;
|
|
|
690 send += n;
|
|
|
691 c->sent += n;
|
|
|
692
|
|
|
693 if (n < size) {
|
|
|
694 break;
|
|
|
695 }
|
|
|
696
|
|
|
697 if (buf->pos == buf->last) {
|
|
|
698 buf->pos = buf->start;
|
|
|
699 buf->last = buf->start;
|
|
|
700 }
|
|
|
701
|
|
|
702 if (in == NULL || send == limit) {
|
|
|
703 break;
|
|
|
704 }
|
|
|
705 }
|
|
|
706
|
|
|
707 c->buffered = (buf->pos < buf->last) ? 1 : 0;
|
|
|
708
|
|
|
709 return in;
|
|
|
710 }
|
|
|
711
|
|
|
712
|
|
88
|
713 ssize_t
|
|
38
|
714 ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size)
|
|
0
|
715 {
|
|
96
|
716 int n, sslerr;
|
|
|
717 ngx_err_t err;
|
|
0
|
718
|
|
|
719 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size);
|
|
|
720
|
|
92
|
721 n = SSL_write(c->ssl->connection, data, size);
|
|
0
|
722
|
|
|
723 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n);
|
|
|
724
|
|
|
725 if (n > 0) {
|
|
88
|
726
|
|
22
|
727 if (c->ssl->saved_read_handler) {
|
|
|
728
|
|
58
|
729 c->read->handler = c->ssl->saved_read_handler;
|
|
22
|
730 c->ssl->saved_read_handler = NULL;
|
|
|
731 c->read->ready = 1;
|
|
|
732
|
|
|
733 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
734 return NGX_ERROR;
|
|
|
735 }
|
|
|
736
|
|
112
|
737 ngx_post_event(c->read, &ngx_posted_events);
|
|
22
|
738 }
|
|
|
739
|
|
0
|
740 return n;
|
|
|
741 }
|
|
|
742
|
|
92
|
743 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
744
|
|
|
745 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
746
|
|
|
747 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
748
|
|
|
749 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
750 c->write->ready = 0;
|
|
|
751 return NGX_AGAIN;
|
|
|
752 }
|
|
|
753
|
|
|
754 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
2
|
755
|
|
96
|
756 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
757 "peer started SSL renegotiation");
|
|
22
|
758
|
|
|
759 c->read->ready = 0;
|
|
|
760
|
|
|
761 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
762 return NGX_ERROR;
|
|
|
763 }
|
|
|
764
|
|
|
765 /*
|
|
|
766 * we do not set the timer because there is already
|
|
|
767 * the write event timer
|
|
|
768 */
|
|
|
769
|
|
|
770 if (c->ssl->saved_read_handler == NULL) {
|
|
58
|
771 c->ssl->saved_read_handler = c->read->handler;
|
|
|
772 c->read->handler = ngx_ssl_read_handler;
|
|
22
|
773 }
|
|
|
774
|
|
0
|
775 return NGX_AGAIN;
|
|
|
776 }
|
|
|
777
|
|
96
|
778 c->ssl->no_wait_shutdown = 1;
|
|
|
779 c->ssl->no_send_shutdown = 1;
|
|
92
|
780
|
|
96
|
781 ngx_ssl_connection_error(c, sslerr, err, "SSL_write() failed");
|
|
0
|
782
|
|
|
783 return NGX_ERROR;
|
|
|
784 }
|
|
|
785
|
|
|
786
|
|
38
|
787 static void
|
|
|
788 ngx_ssl_read_handler(ngx_event_t *rev)
|
|
22
|
789 {
|
|
|
790 ngx_connection_t *c;
|
|
|
791
|
|
|
792 c = rev->data;
|
|
96
|
793
|
|
58
|
794 c->write->handler(c->write);
|
|
22
|
795 }
|
|
|
796
|
|
|
797
|
|
38
|
798 ngx_int_t
|
|
|
799 ngx_ssl_shutdown(ngx_connection_t *c)
|
|
0
|
800 {
|
|
22
|
801 int n, sslerr, mode;
|
|
0
|
802 ngx_uint_t again;
|
|
|
803
|
|
126
|
804 if (c->timedout) {
|
|
96
|
805 mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
|
|
0
|
806
|
|
96
|
807 } else {
|
|
|
808 mode = SSL_get_shutdown(c->ssl->connection);
|
|
22
|
809
|
|
96
|
810 if (c->ssl->no_wait_shutdown) {
|
|
|
811 mode |= SSL_RECEIVED_SHUTDOWN;
|
|
0
|
812 }
|
|
|
813
|
|
96
|
814 if (c->ssl->no_send_shutdown) {
|
|
|
815 mode |= SSL_SENT_SHUTDOWN;
|
|
0
|
816 }
|
|
|
817 }
|
|
|
818
|
|
96
|
819 SSL_set_shutdown(c->ssl->connection, mode);
|
|
|
820
|
|
0
|
821 again = 0;
|
|
10
|
822 #if (NGX_SUPPRESS_WARN)
|
|
|
823 sslerr = 0;
|
|
|
824 #endif
|
|
0
|
825
|
|
|
826 for ( ;; ) {
|
|
92
|
827 n = SSL_shutdown(c->ssl->connection);
|
|
0
|
828
|
|
|
829 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n);
|
|
|
830
|
|
126
|
831 if (n == 1 || (n == 0 && c->timedout)) {
|
|
92
|
832 SSL_free(c->ssl->connection);
|
|
22
|
833 c->ssl = NULL;
|
|
92
|
834
|
|
22
|
835 return NGX_OK;
|
|
|
836 }
|
|
|
837
|
|
0
|
838 if (n == 0) {
|
|
|
839 again = 1;
|
|
|
840 break;
|
|
|
841 }
|
|
|
842
|
|
|
843 break;
|
|
|
844 }
|
|
|
845
|
|
|
846 if (!again) {
|
|
92
|
847 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
848
|
|
|
849 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
850 "SSL_get_error: %d", sslerr);
|
|
|
851 }
|
|
|
852
|
|
|
853 if (again || sslerr == SSL_ERROR_WANT_READ) {
|
|
|
854
|
|
22
|
855 ngx_add_timer(c->read, 30000);
|
|
0
|
856
|
|
126
|
857 c->read->handler = ngx_ssl_shutdown_handler;
|
|
|
858
|
|
0
|
859 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
860 return NGX_ERROR;
|
|
|
861 }
|
|
|
862
|
|
|
863 return NGX_AGAIN;
|
|
|
864 }
|
|
|
865
|
|
|
866 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
867
|
|
126
|
868 c->write->handler = ngx_ssl_shutdown_handler;
|
|
|
869
|
|
0
|
870 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
871 return NGX_ERROR;
|
|
|
872 }
|
|
|
873
|
|
|
874 return NGX_AGAIN;
|
|
|
875 }
|
|
|
876
|
|
|
877 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_shutdown() failed");
|
|
|
878
|
|
92
|
879 SSL_free(c->ssl->connection);
|
|
|
880 c->ssl = NULL;
|
|
|
881
|
|
0
|
882 return NGX_ERROR;
|
|
|
883 }
|
|
|
884
|
|
|
885
|
|
96
|
886 static void
|
|
126
|
887 ngx_ssl_shutdown_handler(ngx_event_t *ev)
|
|
|
888 {
|
|
|
889 ngx_connection_t *c;
|
|
|
890 ngx_connection_handler_pt handler;
|
|
|
891
|
|
|
892 c = ev->data;
|
|
|
893 handler = c->ssl->handler;
|
|
|
894
|
|
|
895 if (ev->timedout) {
|
|
|
896 c->timedout = 1;
|
|
|
897 }
|
|
|
898
|
|
|
899 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "SSL shutdown handler");
|
|
|
900
|
|
|
901 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
902 return;
|
|
|
903 }
|
|
|
904
|
|
|
905 handler(c);
|
|
|
906 }
|
|
|
907
|
|
|
908
|
|
|
909 static void
|
|
96
|
910 ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
|
|
|
911 char *text)
|
|
|
912 {
|
|
|
913 ngx_uint_t level;
|
|
|
914
|
|
|
915 level = NGX_LOG_CRIT;
|
|
|
916
|
|
|
917 if (sslerr == SSL_ERROR_SYSCALL) {
|
|
|
918
|
|
|
919 if (err == NGX_ECONNRESET
|
|
|
920 || err == NGX_EPIPE
|
|
|
921 || err == NGX_ENOTCONN
|
|
|
922 || err == NGX_ECONNREFUSED
|
|
|
923 || err == NGX_EHOSTUNREACH)
|
|
|
924 {
|
|
|
925 switch (c->log_error) {
|
|
|
926
|
|
|
927 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
928 case NGX_ERROR_INFO:
|
|
|
929 level = NGX_LOG_INFO;
|
|
|
930 break;
|
|
|
931
|
|
|
932 case NGX_ERROR_ERR:
|
|
|
933 level = NGX_LOG_ERR;
|
|
|
934 break;
|
|
|
935
|
|
|
936 default:
|
|
|
937 break;
|
|
|
938 }
|
|
|
939 }
|
|
|
940 }
|
|
|
941
|
|
|
942 ngx_ssl_error(level, c->log, err, text);
|
|
|
943 }
|
|
|
944
|
|
|
945
|
|
38
|
946 void
|
|
|
947 ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...)
|
|
126
|
948 {
|
|
96
|
949 u_long n;
|
|
|
950 va_list args;
|
|
10
|
951 u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last;
|
|
|
952
|
|
|
953 last = errstr + NGX_MAX_CONF_ERRSTR;
|
|
0
|
954
|
|
|
955 va_start(args, fmt);
|
|
10
|
956 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
|
|
0
|
957 va_end(args);
|
|
|
958
|
|
96
|
959 p = ngx_cpystrn(p, (u_char *) " (SSL:", last - p);
|
|
|
960
|
|
|
961 while (p < last && (n = ERR_get_error())) {
|
|
|
962
|
|
|
963 *p++ = ' ';
|
|
0
|
964
|
|
96
|
965 ERR_error_string_n(n, (char *) p, last - p);
|
|
|
966
|
|
|
967 while (p < last && *p) {
|
|
|
968 p++;
|
|
|
969 }
|
|
|
970 }
|
|
0
|
971
|
|
|
972 ngx_log_error(level, log, err, "%s)", errstr);
|
|
|
973 }
|
|
58
|
974
|
|
|
975
|
|
|
976 void
|
|
|
977 ngx_ssl_cleanup_ctx(void *data)
|
|
|
978 {
|
|
96
|
979 ngx_ssl_t *ssl = data;
|
|
58
|
980
|
|
108
|
981 if (ssl->rsa512_key) {
|
|
|
982 RSA_free(ssl->rsa512_key);
|
|
|
983 }
|
|
|
984
|
|
96
|
985 SSL_CTX_free(ssl->ctx);
|
|
58
|
986 }
|
|
90
|
987
|
|
|
988
|
|
|
989 static void *
|
|
|
990 ngx_openssl_create_conf(ngx_cycle_t *cycle)
|
|
|
991 {
|
|
|
992 ngx_openssl_conf_t *oscf;
|
|
126
|
993
|
|
90
|
994 oscf = ngx_pcalloc(cycle->pool, sizeof(ngx_openssl_conf_t));
|
|
|
995 if (oscf == NULL) {
|
|
|
996 return NGX_CONF_ERROR;
|
|
|
997 }
|
|
126
|
998
|
|
90
|
999 /*
|
|
|
1000 * set by ngx_pcalloc():
|
|
126
|
1001 *
|
|
90
|
1002 * oscf->engine.len = 0;
|
|
|
1003 * oscf->engine.data = NULL;
|
|
126
|
1004 */
|
|
90
|
1005
|
|
|
1006 return oscf;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009
|
|
|
1010 static char *
|
|
|
1011 ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
1012 {
|
|
|
1013 #if (NGX_SSL_ENGINE)
|
|
|
1014 ngx_openssl_conf_t *oscf = conf;
|
|
120
|
1015
|
|
90
|
1016 ENGINE *engine;
|
|
|
1017
|
|
|
1018 if (oscf->engine.len == 0) {
|
|
|
1019 return NGX_CONF_OK;
|
|
|
1020 }
|
|
126
|
1021
|
|
90
|
1022 engine = ENGINE_by_id((const char *) oscf->engine.data);
|
|
|
1023
|
|
|
1024 if (engine == NULL) {
|
|
|
1025 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1026 "ENGINE_by_id(\"%V\") failed", &oscf->engine);
|
|
|
1027 return NGX_CONF_ERROR;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (ENGINE_set_default(engine, ENGINE_METHOD_ALL) == 0) {
|
|
|
1031 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1032 "ENGINE_set_default(\"%V\", ENGINE_METHOD_ALL) failed",
|
|
|
1033 &oscf->engine);
|
|
|
1034 return NGX_CONF_ERROR;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 ENGINE_free(engine);
|
|
|
1038
|
|
|
1039 #endif
|
|
|
1040
|
|
|
1041 return NGX_CONF_OK;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044
|
|
|
1045 #if !(NGX_SSL_ENGINE)
|
|
|
1046
|
|
|
1047 static char *
|
|
|
1048 ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1049 {
|
|
|
1050 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
112
|
1051 "\"ssl_engine\" directive is available only in "
|
|
|
1052 "OpenSSL 0.9.7 and higher,");
|
|
90
|
1053
|
|
|
1054 return NGX_CONF_ERROR;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 #endif
|
|
120
|
1058
|
|
|
1059
|
|
|
1060 static void
|
|
|
1061 ngx_openssl_exit(ngx_cycle_t *cycle)
|
|
|
1062 {
|
|
|
1063 #if (NGX_SSL_ENGINE)
|
|
|
1064 ENGINE_cleanup();
|
|
|
1065 #endif
|
|
|
1066 }
|
