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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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132
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304 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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96
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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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132
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309 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
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96
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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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140
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337 c->write->handler = ngx_ssl_handshake_handler;
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96
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338
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339 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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340 return NGX_ERROR;
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341 }
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342
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343 return NGX_AGAIN;
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344 }
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345
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346 if (sslerr == SSL_ERROR_WANT_WRITE) {
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347 c->write->ready = 0;
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140
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348 c->read->handler = ngx_ssl_handshake_handler;
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96
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349 c->write->handler = ngx_ssl_handshake_handler;
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350
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351 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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352 return NGX_ERROR;
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353 }
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354
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355 return NGX_AGAIN;
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356 }
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357
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358 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
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359
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360 c->ssl->no_wait_shutdown = 1;
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361 c->ssl->no_send_shutdown = 1;
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140
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362 c->read->eof = 1;
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96
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363
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364 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
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365 ngx_log_error(NGX_LOG_INFO, c->log, err,
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126
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366 "peer closed connection in SSL handshake");
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96
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367
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368 return NGX_ERROR;
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369 }
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370
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140
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371 c->read->error = 1;
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372
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96
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373 ngx_ssl_connection_error(c, sslerr, err, "SSL_do_handshake() failed");
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374
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375 return NGX_ERROR;
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376 }
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377
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378
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379 static void
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380 ngx_ssl_handshake_handler(ngx_event_t *ev)
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381 {
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382 ngx_connection_t *c;
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383
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384 c = ev->data;
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385
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98
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386 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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126
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387 "SSL handshake handler: %d", ev->write);
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96
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388
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140
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389 if (ev->timedout) {
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390 c->ssl->handler(c);
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391 return;
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392 }
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|
393
|
|
96
|
394 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
|
|
|
395 return;
|
|
|
396 }
|
|
|
397
|
|
|
398 c->ssl->handler(c);
|
|
|
399 }
|
|
|
400
|
|
|
401
|
|
38
|
402 ssize_t
|
|
126
|
403 ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl)
|
|
|
404 {
|
|
|
405 ssize_t n, bytes;
|
|
|
406 ngx_buf_t *b;
|
|
|
407
|
|
|
408 bytes = 0;
|
|
|
409
|
|
|
410 while (cl) {
|
|
|
411 b = cl->buf;
|
|
|
412
|
|
|
413 n = ngx_ssl_recv(c, b->last, b->end - b->last);
|
|
|
414
|
|
|
415 if (n > 0) {
|
|
|
416 b->last += n;
|
|
|
417 bytes += n;
|
|
|
418
|
|
|
419 if (b->last == b->end) {
|
|
|
420 cl = cl->next;
|
|
|
421 }
|
|
|
422
|
|
|
423 continue;
|
|
|
424 }
|
|
|
425
|
|
|
426 if (bytes) {
|
|
|
427 return bytes;
|
|
|
428 }
|
|
|
429
|
|
|
430 return n;
|
|
|
431 }
|
|
|
432
|
|
|
433 return bytes;
|
|
|
434 }
|
|
|
435
|
|
|
436
|
|
|
437 ssize_t
|
|
38
|
438 ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
439 {
|
|
38
|
440 int n, bytes;
|
|
|
441
|
|
|
442 if (c->ssl->last == NGX_ERROR) {
|
|
|
443 return NGX_ERROR;
|
|
|
444 }
|
|
|
445
|
|
126
|
446 if (c->ssl->last == NGX_DONE) {
|
|
|
447 return 0;
|
|
|
448 }
|
|
|
449
|
|
38
|
450 bytes = 0;
|
|
0
|
451
|
|
38
|
452 /*
|
|
|
453 * SSL_read() may return data in parts, so try to read
|
|
|
454 * until SSL_read() would return no data
|
|
|
455 */
|
|
|
456
|
|
|
457 for ( ;; ) {
|
|
0
|
458
|
|
92
|
459 n = SSL_read(c->ssl->connection, buf, size);
|
|
38
|
460
|
|
126
|
461 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n);
|
|
0
|
462
|
|
38
|
463 if (n > 0) {
|
|
|
464 bytes += n;
|
|
|
465 }
|
|
|
466
|
|
|
467 c->ssl->last = ngx_ssl_handle_recv(c, n);
|
|
|
468
|
|
|
469 if (c->ssl->last != NGX_OK) {
|
|
28
|
470
|
|
38
|
471 if (bytes) {
|
|
|
472 return bytes;
|
|
126
|
473 }
|
|
38
|
474
|
|
126
|
475 if (c->ssl->last == NGX_DONE) {
|
|
|
476 return 0;
|
|
28
|
477 }
|
|
126
|
478
|
|
|
479 return c->ssl->last;
|
|
28
|
480 }
|
|
|
481
|
|
38
|
482 size -= n;
|
|
|
483
|
|
|
484 if (size == 0) {
|
|
|
485 return bytes;
|
|
|
486 }
|
|
|
487
|
|
|
488 buf += n;
|
|
|
489 }
|
|
|
490 }
|
|
|
491
|
|
|
492
|
|
|
493 static ngx_int_t
|
|
|
494 ngx_ssl_handle_recv(ngx_connection_t *c, int n)
|
|
|
495 {
|
|
96
|
496 int sslerr;
|
|
|
497 ngx_err_t err;
|
|
38
|
498
|
|
|
499 if (n > 0) {
|
|
28
|
500
|
|
22
|
501 if (c->ssl->saved_write_handler) {
|
|
|
502
|
|
58
|
503 c->write->handler = c->ssl->saved_write_handler;
|
|
22
|
504 c->ssl->saved_write_handler = NULL;
|
|
|
505 c->write->ready = 1;
|
|
|
506
|
|
|
507 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
508 return NGX_ERROR;
|
|
|
509 }
|
|
|
510
|
|
112
|
511 ngx_post_event(c->write, &ngx_posted_events);
|
|
22
|
512 }
|
|
|
513
|
|
38
|
514 return NGX_OK;
|
|
0
|
515 }
|
|
|
516
|
|
92
|
517 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
518
|
|
|
519 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
520
|
|
|
521 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
522
|
|
|
523 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
4
|
524 c->read->ready = 0;
|
|
0
|
525 return NGX_AGAIN;
|
|
|
526 }
|
|
|
527
|
|
|
528 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
88
|
529
|
|
96
|
530 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
531 "peer started SSL renegotiation");
|
|
22
|
532
|
|
|
533 c->write->ready = 0;
|
|
|
534
|
|
|
535 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
536 return NGX_ERROR;
|
|
|
537 }
|
|
|
538
|
|
|
539 /*
|
|
|
540 * we do not set the timer because there is already the read event timer
|
|
|
541 */
|
|
|
542
|
|
|
543 if (c->ssl->saved_write_handler == NULL) {
|
|
58
|
544 c->ssl->saved_write_handler = c->write->handler;
|
|
|
545 c->write->handler = ngx_ssl_write_handler;
|
|
22
|
546 }
|
|
|
547
|
|
0
|
548 return NGX_AGAIN;
|
|
|
549 }
|
|
|
550
|
|
96
|
551 c->ssl->no_wait_shutdown = 1;
|
|
|
552 c->ssl->no_send_shutdown = 1;
|
|
138
|
553 c->read->eof = 1;
|
|
0
|
554
|
|
|
555 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
126
|
556 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
557 "peer shutdown SSL cleanly");
|
|
|
558 return NGX_DONE;
|
|
0
|
559 }
|
|
|
560
|
|
140
|
561 c->read->error = 1;
|
|
96
|
562 ngx_ssl_connection_error(c, sslerr, err, "SSL_read() failed");
|
|
0
|
563
|
|
|
564 return NGX_ERROR;
|
|
|
565 }
|
|
|
566
|
|
|
567
|
|
38
|
568 static void
|
|
|
569 ngx_ssl_write_handler(ngx_event_t *wev)
|
|
22
|
570 {
|
|
|
571 ngx_connection_t *c;
|
|
|
572
|
|
|
573 c = wev->data;
|
|
96
|
574
|
|
58
|
575 c->read->handler(c->read);
|
|
22
|
576 }
|
|
|
577
|
|
|
578
|
|
0
|
579 /*
|
|
|
580 * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer
|
|
22
|
581 * before the SSL_write() call to decrease a SSL overhead.
|
|
0
|
582 *
|
|
|
583 * Besides for protocols such as HTTP it is possible to always buffer
|
|
|
584 * the output to decrease a SSL overhead some more.
|
|
|
585 */
|
|
|
586
|
|
38
|
587 ngx_chain_t *
|
|
|
588 ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
|
|
0
|
589 {
|
|
|
590 int n;
|
|
|
591 ngx_uint_t flush;
|
|
|
592 ssize_t send, size;
|
|
|
593 ngx_buf_t *buf;
|
|
|
594
|
|
146
|
595 if (!c->ssl->buffer
|
|
|
596 || (in && in->next == NULL && !(c->buffered & NGX_SSL_BUFFERED)))
|
|
|
597 {
|
|
0
|
598
|
|
|
599 /*
|
|
126
|
600 * we avoid a buffer copy if
|
|
|
601 * we do not need to buffer the output
|
|
|
602 * or the incoming buf is a single and our buffer is empty
|
|
0
|
603 */
|
|
|
604
|
|
126
|
605 while (in) {
|
|
|
606 if (ngx_buf_special(in->buf)) {
|
|
|
607 in = in->next;
|
|
|
608 continue;
|
|
|
609 }
|
|
0
|
610
|
|
126
|
611 n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos);
|
|
|
612
|
|
|
613 if (n == NGX_ERROR) {
|
|
|
614 return NGX_CHAIN_ERROR;
|
|
|
615 }
|
|
0
|
616
|
|
126
|
617 if (n == NGX_AGAIN) {
|
|
146
|
618 c->buffered |= NGX_SSL_BUFFERED;
|
|
126
|
619 return in;
|
|
|
620 }
|
|
|
621
|
|
|
622 in->buf->pos += n;
|
|
|
623
|
|
|
624 if (in->buf->pos == in->buf->last) {
|
|
|
625 in = in->next;
|
|
|
626 }
|
|
0
|
627 }
|
|
|
628
|
|
|
629 return in;
|
|
|
630 }
|
|
|
631
|
|
22
|
632
|
|
|
633 /* the maximum limit size is the maximum uint32_t value - the page size */
|
|
|
634
|
|
|
635 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) {
|
|
|
636 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
|
|
|
637 }
|
|
|
638
|
|
|
639
|
|
126
|
640 buf = c->ssl->buf;
|
|
0
|
641 send = 0;
|
|
|
642 flush = (in == NULL) ? 1 : 0;
|
|
|
643
|
|
|
644 for ( ;; ) {
|
|
|
645
|
|
|
646 while (in && buf->last < buf->end) {
|
|
132
|
647 if (in->buf->last_buf || in->buf->flush) {
|
|
0
|
648 flush = 1;
|
|
|
649 }
|
|
|
650
|
|
|
651 if (ngx_buf_special(in->buf)) {
|
|
|
652 in = in->next;
|
|
|
653 continue;
|
|
|
654 }
|
|
|
655
|
|
|
656 size = in->buf->last - in->buf->pos;
|
|
|
657
|
|
|
658 if (size > buf->end - buf->last) {
|
|
|
659 size = buf->end - buf->last;
|
|
|
660 }
|
|
|
661
|
|
|
662 if (send + size > limit) {
|
|
126
|
663 size = (ssize_t) (limit - send);
|
|
0
|
664 flush = 1;
|
|
|
665 }
|
|
|
666
|
|
|
667 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
668 "SSL buf copy: %d", size);
|
|
|
669
|
|
|
670 ngx_memcpy(buf->last, in->buf->pos, size);
|
|
|
671
|
|
|
672 buf->last += size;
|
|
|
673
|
|
|
674 in->buf->pos += size;
|
|
126
|
675
|
|
0
|
676 if (in->buf->pos == in->buf->last) {
|
|
|
677 in = in->next;
|
|
|
678 }
|
|
|
679 }
|
|
|
680
|
|
|
681 size = buf->last - buf->pos;
|
|
|
682
|
|
|
683 if (!flush && buf->last < buf->end && c->ssl->buffer) {
|
|
|
684 break;
|
|
|
685 }
|
|
|
686
|
|
|
687 n = ngx_ssl_write(c, buf->pos, size);
|
|
|
688
|
|
|
689 if (n == NGX_ERROR) {
|
|
|
690 return NGX_CHAIN_ERROR;
|
|
|
691 }
|
|
|
692
|
|
60
|
693 if (n == NGX_AGAIN) {
|
|
146
|
694 c->buffered |= NGX_SSL_BUFFERED;
|
|
60
|
695 return in;
|
|
0
|
696 }
|
|
|
697
|
|
|
698 buf->pos += n;
|
|
|
699 send += n;
|
|
|
700 c->sent += n;
|
|
|
701
|
|
|
702 if (n < size) {
|
|
|
703 break;
|
|
|
704 }
|
|
|
705
|
|
|
706 if (buf->pos == buf->last) {
|
|
|
707 buf->pos = buf->start;
|
|
|
708 buf->last = buf->start;
|
|
|
709 }
|
|
|
710
|
|
|
711 if (in == NULL || send == limit) {
|
|
|
712 break;
|
|
|
713 }
|
|
|
714 }
|
|
|
715
|
|
146
|
716 if (buf->pos < buf->last) {
|
|
|
717 c->buffered |= NGX_SSL_BUFFERED;
|
|
|
718
|
|
|
719 } else {
|
|
|
720 c->buffered &= ~NGX_SSL_BUFFERED;
|
|
|
721 }
|
|
0
|
722
|
|
|
723 return in;
|
|
|
724 }
|
|
|
725
|
|
|
726
|
|
88
|
727 ssize_t
|
|
38
|
728 ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size)
|
|
0
|
729 {
|
|
96
|
730 int n, sslerr;
|
|
|
731 ngx_err_t err;
|
|
0
|
732
|
|
|
733 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size);
|
|
|
734
|
|
92
|
735 n = SSL_write(c->ssl->connection, data, size);
|
|
0
|
736
|
|
|
737 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n);
|
|
|
738
|
|
|
739 if (n > 0) {
|
|
88
|
740
|
|
22
|
741 if (c->ssl->saved_read_handler) {
|
|
|
742
|
|
58
|
743 c->read->handler = c->ssl->saved_read_handler;
|
|
22
|
744 c->ssl->saved_read_handler = NULL;
|
|
|
745 c->read->ready = 1;
|
|
|
746
|
|
|
747 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
748 return NGX_ERROR;
|
|
|
749 }
|
|
|
750
|
|
112
|
751 ngx_post_event(c->read, &ngx_posted_events);
|
|
22
|
752 }
|
|
|
753
|
|
0
|
754 return n;
|
|
|
755 }
|
|
|
756
|
|
92
|
757 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
758
|
|
|
759 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
760
|
|
|
761 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
762
|
|
|
763 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
764 c->write->ready = 0;
|
|
|
765 return NGX_AGAIN;
|
|
|
766 }
|
|
|
767
|
|
|
768 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
2
|
769
|
|
96
|
770 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
771 "peer started SSL renegotiation");
|
|
22
|
772
|
|
|
773 c->read->ready = 0;
|
|
|
774
|
|
|
775 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
776 return NGX_ERROR;
|
|
|
777 }
|
|
|
778
|
|
|
779 /*
|
|
|
780 * we do not set the timer because there is already
|
|
|
781 * the write event timer
|
|
|
782 */
|
|
|
783
|
|
|
784 if (c->ssl->saved_read_handler == NULL) {
|
|
58
|
785 c->ssl->saved_read_handler = c->read->handler;
|
|
|
786 c->read->handler = ngx_ssl_read_handler;
|
|
22
|
787 }
|
|
|
788
|
|
0
|
789 return NGX_AGAIN;
|
|
|
790 }
|
|
|
791
|
|
96
|
792 c->ssl->no_wait_shutdown = 1;
|
|
|
793 c->ssl->no_send_shutdown = 1;
|
|
140
|
794 c->write->error = 1;
|
|
92
|
795
|
|
96
|
796 ngx_ssl_connection_error(c, sslerr, err, "SSL_write() failed");
|
|
0
|
797
|
|
|
798 return NGX_ERROR;
|
|
|
799 }
|
|
|
800
|
|
|
801
|
|
38
|
802 static void
|
|
|
803 ngx_ssl_read_handler(ngx_event_t *rev)
|
|
22
|
804 {
|
|
|
805 ngx_connection_t *c;
|
|
|
806
|
|
|
807 c = rev->data;
|
|
96
|
808
|
|
58
|
809 c->write->handler(c->write);
|
|
22
|
810 }
|
|
|
811
|
|
|
812
|
|
38
|
813 ngx_int_t
|
|
|
814 ngx_ssl_shutdown(ngx_connection_t *c)
|
|
0
|
815 {
|
|
22
|
816 int n, sslerr, mode;
|
|
140
|
817 ngx_err_t err;
|
|
0
|
818 ngx_uint_t again;
|
|
|
819
|
|
126
|
820 if (c->timedout) {
|
|
96
|
821 mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
|
|
0
|
822
|
|
96
|
823 } else {
|
|
|
824 mode = SSL_get_shutdown(c->ssl->connection);
|
|
22
|
825
|
|
96
|
826 if (c->ssl->no_wait_shutdown) {
|
|
|
827 mode |= SSL_RECEIVED_SHUTDOWN;
|
|
0
|
828 }
|
|
|
829
|
|
96
|
830 if (c->ssl->no_send_shutdown) {
|
|
|
831 mode |= SSL_SENT_SHUTDOWN;
|
|
0
|
832 }
|
|
|
833 }
|
|
|
834
|
|
96
|
835 SSL_set_shutdown(c->ssl->connection, mode);
|
|
|
836
|
|
0
|
837 again = 0;
|
|
10
|
838 sslerr = 0;
|
|
0
|
839
|
|
|
840 for ( ;; ) {
|
|
92
|
841 n = SSL_shutdown(c->ssl->connection);
|
|
0
|
842
|
|
|
843 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n);
|
|
|
844
|
|
126
|
845 if (n == 1 || (n == 0 && c->timedout)) {
|
|
92
|
846 SSL_free(c->ssl->connection);
|
|
22
|
847 c->ssl = NULL;
|
|
92
|
848
|
|
22
|
849 return NGX_OK;
|
|
|
850 }
|
|
|
851
|
|
0
|
852 if (n == 0) {
|
|
|
853 again = 1;
|
|
|
854 break;
|
|
|
855 }
|
|
|
856
|
|
|
857 break;
|
|
|
858 }
|
|
|
859
|
|
|
860 if (!again) {
|
|
92
|
861 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
862
|
|
|
863 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
864 "SSL_get_error: %d", sslerr);
|
|
|
865 }
|
|
|
866
|
|
138
|
867 if (again
|
|
|
868 || sslerr == SSL_ERROR_WANT_READ
|
|
|
869 || sslerr == SSL_ERROR_WANT_WRITE)
|
|
|
870 {
|
|
126
|
871 c->read->handler = ngx_ssl_shutdown_handler;
|
|
138
|
872 c->write->handler = ngx_ssl_shutdown_handler;
|
|
126
|
873
|
|
0
|
874 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
875 return NGX_ERROR;
|
|
|
876 }
|
|
|
877
|
|
|
878 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
879 return NGX_ERROR;
|
|
|
880 }
|
|
|
881
|
|
138
|
882 if (again || sslerr == SSL_ERROR_WANT_READ) {
|
|
|
883 ngx_add_timer(c->read, 30000);
|
|
|
884 }
|
|
|
885
|
|
0
|
886 return NGX_AGAIN;
|
|
|
887 }
|
|
|
888
|
|
140
|
889 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
890
|
|
|
891 ngx_ssl_connection_error(c, sslerr, err, "SSL_shutdown() failed");
|
|
0
|
892
|
|
92
|
893 SSL_free(c->ssl->connection);
|
|
|
894 c->ssl = NULL;
|
|
|
895
|
|
0
|
896 return NGX_ERROR;
|
|
|
897 }
|
|
|
898
|
|
|
899
|
|
96
|
900 static void
|
|
126
|
901 ngx_ssl_shutdown_handler(ngx_event_t *ev)
|
|
|
902 {
|
|
|
903 ngx_connection_t *c;
|
|
|
904 ngx_connection_handler_pt handler;
|
|
|
905
|
|
|
906 c = ev->data;
|
|
|
907 handler = c->ssl->handler;
|
|
|
908
|
|
|
909 if (ev->timedout) {
|
|
|
910 c->timedout = 1;
|
|
|
911 }
|
|
|
912
|
|
|
913 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "SSL shutdown handler");
|
|
|
914
|
|
|
915 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
916 return;
|
|
|
917 }
|
|
|
918
|
|
|
919 handler(c);
|
|
|
920 }
|
|
|
921
|
|
|
922
|
|
|
923 static void
|
|
96
|
924 ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
|
|
|
925 char *text)
|
|
|
926 {
|
|
|
927 ngx_uint_t level;
|
|
|
928
|
|
|
929 level = NGX_LOG_CRIT;
|
|
|
930
|
|
|
931 if (sslerr == SSL_ERROR_SYSCALL) {
|
|
|
932
|
|
|
933 if (err == NGX_ECONNRESET
|
|
|
934 || err == NGX_EPIPE
|
|
|
935 || err == NGX_ENOTCONN
|
|
138
|
936 #if !(NGX_CRIT_ETIMEDOUT)
|
|
|
937 || err == NGX_ETIMEDOUT
|
|
|
938 #endif
|
|
96
|
939 || err == NGX_ECONNREFUSED
|
|
|
940 || err == NGX_EHOSTUNREACH)
|
|
|
941 {
|
|
|
942 switch (c->log_error) {
|
|
|
943
|
|
|
944 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
945 case NGX_ERROR_INFO:
|
|
|
946 level = NGX_LOG_INFO;
|
|
|
947 break;
|
|
|
948
|
|
|
949 case NGX_ERROR_ERR:
|
|
|
950 level = NGX_LOG_ERR;
|
|
|
951 break;
|
|
|
952
|
|
|
953 default:
|
|
|
954 break;
|
|
|
955 }
|
|
|
956 }
|
|
|
957 }
|
|
|
958
|
|
|
959 ngx_ssl_error(level, c->log, err, text);
|
|
|
960 }
|
|
|
961
|
|
|
962
|
|
132
|
963 void ngx_cdecl
|
|
38
|
964 ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...)
|
|
126
|
965 {
|
|
96
|
966 u_long n;
|
|
|
967 va_list args;
|
|
10
|
968 u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last;
|
|
|
969
|
|
|
970 last = errstr + NGX_MAX_CONF_ERRSTR;
|
|
0
|
971
|
|
|
972 va_start(args, fmt);
|
|
10
|
973 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
|
|
0
|
974 va_end(args);
|
|
|
975
|
|
96
|
976 p = ngx_cpystrn(p, (u_char *) " (SSL:", last - p);
|
|
|
977
|
|
132
|
978 while (p < last) {
|
|
|
979
|
|
|
980 n = ERR_get_error();
|
|
|
981
|
|
|
982 if (n == 0) {
|
|
|
983 break;
|
|
|
984 }
|
|
96
|
985
|
|
|
986 *p++ = ' ';
|
|
0
|
987
|
|
96
|
988 ERR_error_string_n(n, (char *) p, last - p);
|
|
|
989
|
|
|
990 while (p < last && *p) {
|
|
|
991 p++;
|
|
|
992 }
|
|
|
993 }
|
|
0
|
994
|
|
|
995 ngx_log_error(level, log, err, "%s)", errstr);
|
|
|
996 }
|
|
58
|
997
|
|
|
998
|
|
|
999 void
|
|
|
1000 ngx_ssl_cleanup_ctx(void *data)
|
|
|
1001 {
|
|
138
|
1002 ngx_ssl_t *ssl = data;
|
|
58
|
1003
|
|
138
|
1004 if (ssl->rsa512_key) {
|
|
|
1005 RSA_free(ssl->rsa512_key);
|
|
|
1006 }
|
|
108
|
1007
|
|
138
|
1008 SSL_CTX_free(ssl->ctx);
|
|
58
|
1009 }
|
|
90
|
1010
|
|
|
1011
|
|
|
1012 static void *
|
|
|
1013 ngx_openssl_create_conf(ngx_cycle_t *cycle)
|
|
|
1014 {
|
|
|
1015 ngx_openssl_conf_t *oscf;
|
|
126
|
1016
|
|
90
|
1017 oscf = ngx_pcalloc(cycle->pool, sizeof(ngx_openssl_conf_t));
|
|
|
1018 if (oscf == NULL) {
|
|
|
1019 return NGX_CONF_ERROR;
|
|
|
1020 }
|
|
126
|
1021
|
|
90
|
1022 /*
|
|
|
1023 * set by ngx_pcalloc():
|
|
126
|
1024 *
|
|
90
|
1025 * oscf->engine.len = 0;
|
|
|
1026 * oscf->engine.data = NULL;
|
|
126
|
1027 */
|
|
90
|
1028
|
|
|
1029 return oscf;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032
|
|
|
1033 static char *
|
|
|
1034 ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
1035 {
|
|
|
1036 #if (NGX_SSL_ENGINE)
|
|
|
1037 ngx_openssl_conf_t *oscf = conf;
|
|
120
|
1038
|
|
90
|
1039 ENGINE *engine;
|
|
|
1040
|
|
|
1041 if (oscf->engine.len == 0) {
|
|
|
1042 return NGX_CONF_OK;
|
|
|
1043 }
|
|
126
|
1044
|
|
90
|
1045 engine = ENGINE_by_id((const char *) oscf->engine.data);
|
|
|
1046
|
|
|
1047 if (engine == NULL) {
|
|
|
1048 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1049 "ENGINE_by_id(\"%V\") failed", &oscf->engine);
|
|
|
1050 return NGX_CONF_ERROR;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 if (ENGINE_set_default(engine, ENGINE_METHOD_ALL) == 0) {
|
|
|
1054 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1055 "ENGINE_set_default(\"%V\", ENGINE_METHOD_ALL) failed",
|
|
|
1056 &oscf->engine);
|
|
|
1057 return NGX_CONF_ERROR;
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 ENGINE_free(engine);
|
|
|
1061
|
|
|
1062 #endif
|
|
|
1063
|
|
|
1064 return NGX_CONF_OK;
|
|
|
1065 }
|
|
|
1066
|
|
|
1067
|
|
|
1068 #if !(NGX_SSL_ENGINE)
|
|
|
1069
|
|
|
1070 static char *
|
|
|
1071 ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1072 {
|
|
|
1073 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
112
|
1074 "\"ssl_engine\" directive is available only in "
|
|
|
1075 "OpenSSL 0.9.7 and higher,");
|
|
90
|
1076
|
|
|
1077 return NGX_CONF_ERROR;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 #endif
|
|
120
|
1081
|
|
|
1082
|
|
|
1083 static void
|
|
|
1084 ngx_openssl_exit(ngx_cycle_t *cycle)
|
|
|
1085 {
|
|
|
1086 #if (NGX_SSL_ENGINE)
|
|
|
1087 ENGINE_cleanup();
|
|
|
1088 #endif
|
|
|
1089 }
|
