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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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196
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167 SSL_FILETYPE_PEM)
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168 == 0)
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112
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169 {
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170 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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171 "SSL_CTX_use_PrivateKey_file(\"%s\") failed", key->data);
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96
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172 return NGX_ERROR;
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173 }
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174
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175 return NGX_OK;
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176 }
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177
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178
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179 ngx_int_t
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196
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180 ngx_ssl_client_certificate(ngx_conf_t *cf, ngx_ssl_t *ssl, ngx_str_t *cert)
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181 {
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182 if (ngx_conf_full_name(cf->cycle, cert) == NGX_ERROR) {
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183 return NGX_ERROR;
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184 }
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185
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186 if (SSL_CTX_load_verify_locations(ssl->ctx, (char *) cert->data, NULL)
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187 == 0)
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188 {
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189 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0,
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190 "SSL_CTX_load_verify_locations(\"%s\") failed",
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191 cert->data);
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192 return NGX_ERROR;
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193 }
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194
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195 return NGX_OK;
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196 }
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197
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198
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199 ngx_int_t
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96
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200 ngx_ssl_generate_rsa512_key(ngx_ssl_t *ssl)
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201 {
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108
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202 if (SSL_CTX_need_tmp_RSA(ssl->ctx) == 0) {
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203 return NGX_OK;
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204 }
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205
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96
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206 ssl->rsa512_key = RSA_generate_key(512, RSA_F4, NULL, NULL);
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207
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208 if (ssl->rsa512_key) {
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209 SSL_CTX_set_tmp_rsa(ssl->ctx, ssl->rsa512_key);
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210 return NGX_OK;
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211 }
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212
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213 ngx_ssl_error(NGX_LOG_EMERG, ssl->log, 0, "RSA_generate_key(512) failed");
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214
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215 return NGX_ERROR;
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216 }
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217
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218
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219 ngx_int_t
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220 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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221 {
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96
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222 ngx_ssl_connection_t *sc;
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0
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223
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96
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224 sc = ngx_pcalloc(c->pool, sizeof(ngx_ssl_connection_t));
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225 if (sc == NULL) {
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0
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226 return NGX_ERROR;
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227 }
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228
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92
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229 if (flags & NGX_SSL_BUFFER) {
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96
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230 sc->buffer = 1;
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92
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231
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96
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232 sc->buf = ngx_create_temp_buf(c->pool, NGX_SSL_BUFSIZE);
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233 if (sc->buf == NULL) {
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92
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234 return NGX_ERROR;
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235 }
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0
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236 }
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237
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96
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238 sc->connection = SSL_new(ssl->ctx);
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0
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239
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96
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240 if (sc->connection == NULL) {
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0
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241 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_new() failed");
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242 return NGX_ERROR;
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243 }
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244
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96
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245 if (SSL_set_fd(sc->connection, c->fd) == 0) {
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0
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246 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_fd() failed");
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247 return NGX_ERROR;
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248 }
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249
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126
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250 if (flags & NGX_SSL_CLIENT) {
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251 SSL_set_connect_state(sc->connection);
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252
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253 } else {
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254 SSL_set_accept_state(sc->connection);
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255 }
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0
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256
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96
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257 c->ssl = sc;
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0
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258
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259 return NGX_OK;
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260 }
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261
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262
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96
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263 ngx_int_t
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126
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264 ngx_ssl_set_session(ngx_connection_t *c, ngx_ssl_session_t *session)
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265 {
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266 if (session) {
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267 if (SSL_set_session(c->ssl->connection, session) == 0) {
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268 ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_session() failed");
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269 return NGX_ERROR;
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270 }
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271 }
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272
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273 return NGX_OK;
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274 }
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275
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276
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277 ngx_int_t
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96
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278 ngx_ssl_handshake(ngx_connection_t *c)
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279 {
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280 int n, sslerr;
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281 ngx_err_t err;
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282
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283 n = SSL_do_handshake(c->ssl->connection);
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284
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126
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285 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_do_handshake: %d", n);
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96
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286
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287 if (n == 1) {
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288
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289 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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290 return NGX_ERROR;
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291 }
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292
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293 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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294 return NGX_ERROR;
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295 }
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296
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297 #if (NGX_DEBUG)
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298 {
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299 char buf[129], *s, *d;
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300 SSL_CIPHER *cipher;
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301
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302 cipher = SSL_get_current_cipher(c->ssl->connection);
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303
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304 if (cipher) {
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305 SSL_CIPHER_description(cipher, &buf[1], 128);
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306
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307 for (s = &buf[1], d = buf; *s; s++) {
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308 if (*s == ' ' && *d == ' ') {
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309 continue;
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310 }
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311
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312 if (*s == LF || *s == CR) {
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313 continue;
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314 }
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315
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316 *++d = *s;
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317 }
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318
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319 if (*d != ' ') {
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320 d++;
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321 }
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322
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323 *d = '\0';
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324
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132
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325 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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96
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326 "SSL: %s, cipher: \"%s\"",
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126
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327 SSL_get_version(c->ssl->connection), &buf[1]);
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96
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328
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329 if (SSL_session_reused(c->ssl->connection)) {
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132
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330 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
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96
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331 "SSL reused session");
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332 }
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333
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334 } else {
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335 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
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126
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336 "SSL no shared ciphers");
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96
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337 }
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338 }
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339 #endif
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340
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341 c->ssl->handshaked = 1;
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342
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343 c->recv = ngx_ssl_recv;
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344 c->send = ngx_ssl_write;
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126
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345 c->recv_chain = ngx_ssl_recv_chain;
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346 c->send_chain = ngx_ssl_send_chain;
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96
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347
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348 return NGX_OK;
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349 }
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350
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351 sslerr = SSL_get_error(c->ssl->connection, n);
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352
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353 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
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354
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355 if (sslerr == SSL_ERROR_WANT_READ) {
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356 c->read->ready = 0;
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357 c->read->handler = ngx_ssl_handshake_handler;
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140
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358 c->write->handler = ngx_ssl_handshake_handler;
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96
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359
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360 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
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361 return NGX_ERROR;
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362 }
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363
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364 return NGX_AGAIN;
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365 }
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366
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367 if (sslerr == SSL_ERROR_WANT_WRITE) {
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368 c->write->ready = 0;
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140
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369 c->read->handler = ngx_ssl_handshake_handler;
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96
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370 c->write->handler = ngx_ssl_handshake_handler;
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371
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372 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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373 return NGX_ERROR;
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374 }
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375
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376 return NGX_AGAIN;
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377 }
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378
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379 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
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380
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381 c->ssl->no_wait_shutdown = 1;
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382 c->ssl->no_send_shutdown = 1;
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140
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383 c->read->eof = 1;
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96
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384
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385 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
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386 ngx_log_error(NGX_LOG_INFO, c->log, err,
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126
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387 "peer closed connection in SSL handshake");
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96
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388
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389 return NGX_ERROR;
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390 }
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391
|
|
140
|
392 c->read->error = 1;
|
|
|
393
|
|
96
|
394 ngx_ssl_connection_error(c, sslerr, err, "SSL_do_handshake() failed");
|
|
|
395
|
|
|
396 return NGX_ERROR;
|
|
|
397 }
|
|
|
398
|
|
|
399
|
|
|
400 static void
|
|
|
401 ngx_ssl_handshake_handler(ngx_event_t *ev)
|
|
|
402 {
|
|
|
403 ngx_connection_t *c;
|
|
|
404
|
|
|
405 c = ev->data;
|
|
|
406
|
|
98
|
407 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
126
|
408 "SSL handshake handler: %d", ev->write);
|
|
96
|
409
|
|
140
|
410 if (ev->timedout) {
|
|
|
411 c->ssl->handler(c);
|
|
|
412 return;
|
|
|
413 }
|
|
|
414
|
|
96
|
415 if (ngx_ssl_handshake(c) == NGX_AGAIN) {
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
|
419 c->ssl->handler(c);
|
|
|
420 }
|
|
|
421
|
|
|
422
|
|
38
|
423 ssize_t
|
|
126
|
424 ngx_ssl_recv_chain(ngx_connection_t *c, ngx_chain_t *cl)
|
|
|
425 {
|
|
|
426 ssize_t n, bytes;
|
|
|
427 ngx_buf_t *b;
|
|
|
428
|
|
|
429 bytes = 0;
|
|
|
430
|
|
|
431 while (cl) {
|
|
|
432 b = cl->buf;
|
|
|
433
|
|
|
434 n = ngx_ssl_recv(c, b->last, b->end - b->last);
|
|
|
435
|
|
|
436 if (n > 0) {
|
|
|
437 b->last += n;
|
|
|
438 bytes += n;
|
|
|
439
|
|
|
440 if (b->last == b->end) {
|
|
|
441 cl = cl->next;
|
|
|
442 }
|
|
|
443
|
|
|
444 continue;
|
|
|
445 }
|
|
|
446
|
|
|
447 if (bytes) {
|
|
|
448 return bytes;
|
|
|
449 }
|
|
|
450
|
|
|
451 return n;
|
|
|
452 }
|
|
|
453
|
|
|
454 return bytes;
|
|
|
455 }
|
|
|
456
|
|
|
457
|
|
|
458 ssize_t
|
|
38
|
459 ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
460 {
|
|
38
|
461 int n, bytes;
|
|
|
462
|
|
|
463 if (c->ssl->last == NGX_ERROR) {
|
|
|
464 return NGX_ERROR;
|
|
|
465 }
|
|
|
466
|
|
126
|
467 if (c->ssl->last == NGX_DONE) {
|
|
|
468 return 0;
|
|
|
469 }
|
|
|
470
|
|
38
|
471 bytes = 0;
|
|
0
|
472
|
|
38
|
473 /*
|
|
|
474 * SSL_read() may return data in parts, so try to read
|
|
|
475 * until SSL_read() would return no data
|
|
|
476 */
|
|
|
477
|
|
|
478 for ( ;; ) {
|
|
0
|
479
|
|
92
|
480 n = SSL_read(c->ssl->connection, buf, size);
|
|
38
|
481
|
|
126
|
482 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n);
|
|
0
|
483
|
|
38
|
484 if (n > 0) {
|
|
|
485 bytes += n;
|
|
|
486 }
|
|
|
487
|
|
|
488 c->ssl->last = ngx_ssl_handle_recv(c, n);
|
|
|
489
|
|
|
490 if (c->ssl->last != NGX_OK) {
|
|
28
|
491
|
|
38
|
492 if (bytes) {
|
|
|
493 return bytes;
|
|
126
|
494 }
|
|
38
|
495
|
|
126
|
496 if (c->ssl->last == NGX_DONE) {
|
|
|
497 return 0;
|
|
28
|
498 }
|
|
126
|
499
|
|
|
500 return c->ssl->last;
|
|
28
|
501 }
|
|
|
502
|
|
38
|
503 size -= n;
|
|
|
504
|
|
|
505 if (size == 0) {
|
|
|
506 return bytes;
|
|
|
507 }
|
|
|
508
|
|
|
509 buf += n;
|
|
|
510 }
|
|
|
511 }
|
|
|
512
|
|
|
513
|
|
|
514 static ngx_int_t
|
|
|
515 ngx_ssl_handle_recv(ngx_connection_t *c, int n)
|
|
|
516 {
|
|
96
|
517 int sslerr;
|
|
|
518 ngx_err_t err;
|
|
38
|
519
|
|
|
520 if (n > 0) {
|
|
28
|
521
|
|
22
|
522 if (c->ssl->saved_write_handler) {
|
|
|
523
|
|
58
|
524 c->write->handler = c->ssl->saved_write_handler;
|
|
22
|
525 c->ssl->saved_write_handler = NULL;
|
|
|
526 c->write->ready = 1;
|
|
|
527
|
|
|
528 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
529 return NGX_ERROR;
|
|
|
530 }
|
|
|
531
|
|
112
|
532 ngx_post_event(c->write, &ngx_posted_events);
|
|
22
|
533 }
|
|
|
534
|
|
38
|
535 return NGX_OK;
|
|
0
|
536 }
|
|
|
537
|
|
92
|
538 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
539
|
|
|
540 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
541
|
|
|
542 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
543
|
|
|
544 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
4
|
545 c->read->ready = 0;
|
|
0
|
546 return NGX_AGAIN;
|
|
|
547 }
|
|
|
548
|
|
|
549 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
88
|
550
|
|
96
|
551 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
552 "peer started SSL renegotiation");
|
|
22
|
553
|
|
|
554 c->write->ready = 0;
|
|
|
555
|
|
|
556 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
557 return NGX_ERROR;
|
|
|
558 }
|
|
|
559
|
|
|
560 /*
|
|
|
561 * we do not set the timer because there is already the read event timer
|
|
|
562 */
|
|
|
563
|
|
|
564 if (c->ssl->saved_write_handler == NULL) {
|
|
58
|
565 c->ssl->saved_write_handler = c->write->handler;
|
|
|
566 c->write->handler = ngx_ssl_write_handler;
|
|
22
|
567 }
|
|
|
568
|
|
0
|
569 return NGX_AGAIN;
|
|
|
570 }
|
|
|
571
|
|
96
|
572 c->ssl->no_wait_shutdown = 1;
|
|
|
573 c->ssl->no_send_shutdown = 1;
|
|
138
|
574 c->read->eof = 1;
|
|
0
|
575
|
|
|
576 if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
|
|
126
|
577 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
578 "peer shutdown SSL cleanly");
|
|
|
579 return NGX_DONE;
|
|
0
|
580 }
|
|
|
581
|
|
140
|
582 c->read->error = 1;
|
|
96
|
583 ngx_ssl_connection_error(c, sslerr, err, "SSL_read() failed");
|
|
0
|
584
|
|
|
585 return NGX_ERROR;
|
|
|
586 }
|
|
|
587
|
|
|
588
|
|
38
|
589 static void
|
|
|
590 ngx_ssl_write_handler(ngx_event_t *wev)
|
|
22
|
591 {
|
|
|
592 ngx_connection_t *c;
|
|
|
593
|
|
|
594 c = wev->data;
|
|
96
|
595
|
|
58
|
596 c->read->handler(c->read);
|
|
22
|
597 }
|
|
|
598
|
|
|
599
|
|
0
|
600 /*
|
|
|
601 * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer
|
|
22
|
602 * before the SSL_write() call to decrease a SSL overhead.
|
|
0
|
603 *
|
|
|
604 * Besides for protocols such as HTTP it is possible to always buffer
|
|
|
605 * the output to decrease a SSL overhead some more.
|
|
|
606 */
|
|
|
607
|
|
38
|
608 ngx_chain_t *
|
|
|
609 ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
|
|
0
|
610 {
|
|
|
611 int n;
|
|
|
612 ngx_uint_t flush;
|
|
|
613 ssize_t send, size;
|
|
|
614 ngx_buf_t *buf;
|
|
|
615
|
|
146
|
616 if (!c->ssl->buffer
|
|
|
617 || (in && in->next == NULL && !(c->buffered & NGX_SSL_BUFFERED)))
|
|
|
618 {
|
|
0
|
619
|
|
|
620 /*
|
|
126
|
621 * we avoid a buffer copy if
|
|
|
622 * we do not need to buffer the output
|
|
|
623 * or the incoming buf is a single and our buffer is empty
|
|
0
|
624 */
|
|
|
625
|
|
126
|
626 while (in) {
|
|
|
627 if (ngx_buf_special(in->buf)) {
|
|
|
628 in = in->next;
|
|
|
629 continue;
|
|
|
630 }
|
|
0
|
631
|
|
126
|
632 n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos);
|
|
|
633
|
|
|
634 if (n == NGX_ERROR) {
|
|
|
635 return NGX_CHAIN_ERROR;
|
|
|
636 }
|
|
0
|
637
|
|
126
|
638 if (n == NGX_AGAIN) {
|
|
146
|
639 c->buffered |= NGX_SSL_BUFFERED;
|
|
126
|
640 return in;
|
|
|
641 }
|
|
|
642
|
|
|
643 in->buf->pos += n;
|
|
|
644
|
|
|
645 if (in->buf->pos == in->buf->last) {
|
|
|
646 in = in->next;
|
|
|
647 }
|
|
0
|
648 }
|
|
|
649
|
|
|
650 return in;
|
|
|
651 }
|
|
|
652
|
|
22
|
653
|
|
|
654 /* the maximum limit size is the maximum uint32_t value - the page size */
|
|
|
655
|
|
|
656 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) {
|
|
|
657 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize;
|
|
|
658 }
|
|
|
659
|
|
|
660
|
|
126
|
661 buf = c->ssl->buf;
|
|
0
|
662 send = 0;
|
|
|
663 flush = (in == NULL) ? 1 : 0;
|
|
|
664
|
|
|
665 for ( ;; ) {
|
|
|
666
|
|
|
667 while (in && buf->last < buf->end) {
|
|
132
|
668 if (in->buf->last_buf || in->buf->flush) {
|
|
0
|
669 flush = 1;
|
|
|
670 }
|
|
|
671
|
|
|
672 if (ngx_buf_special(in->buf)) {
|
|
|
673 in = in->next;
|
|
|
674 continue;
|
|
|
675 }
|
|
|
676
|
|
|
677 size = in->buf->last - in->buf->pos;
|
|
|
678
|
|
|
679 if (size > buf->end - buf->last) {
|
|
|
680 size = buf->end - buf->last;
|
|
|
681 }
|
|
|
682
|
|
|
683 if (send + size > limit) {
|
|
126
|
684 size = (ssize_t) (limit - send);
|
|
0
|
685 flush = 1;
|
|
|
686 }
|
|
|
687
|
|
|
688 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
689 "SSL buf copy: %d", size);
|
|
|
690
|
|
|
691 ngx_memcpy(buf->last, in->buf->pos, size);
|
|
|
692
|
|
|
693 buf->last += size;
|
|
|
694
|
|
|
695 in->buf->pos += size;
|
|
126
|
696
|
|
0
|
697 if (in->buf->pos == in->buf->last) {
|
|
|
698 in = in->next;
|
|
|
699 }
|
|
|
700 }
|
|
|
701
|
|
|
702 size = buf->last - buf->pos;
|
|
|
703
|
|
|
704 if (!flush && buf->last < buf->end && c->ssl->buffer) {
|
|
|
705 break;
|
|
|
706 }
|
|
|
707
|
|
|
708 n = ngx_ssl_write(c, buf->pos, size);
|
|
|
709
|
|
|
710 if (n == NGX_ERROR) {
|
|
|
711 return NGX_CHAIN_ERROR;
|
|
|
712 }
|
|
|
713
|
|
60
|
714 if (n == NGX_AGAIN) {
|
|
146
|
715 c->buffered |= NGX_SSL_BUFFERED;
|
|
60
|
716 return in;
|
|
0
|
717 }
|
|
|
718
|
|
|
719 buf->pos += n;
|
|
|
720 send += n;
|
|
|
721 c->sent += n;
|
|
|
722
|
|
|
723 if (n < size) {
|
|
|
724 break;
|
|
|
725 }
|
|
|
726
|
|
|
727 if (buf->pos == buf->last) {
|
|
|
728 buf->pos = buf->start;
|
|
|
729 buf->last = buf->start;
|
|
|
730 }
|
|
|
731
|
|
|
732 if (in == NULL || send == limit) {
|
|
|
733 break;
|
|
|
734 }
|
|
|
735 }
|
|
|
736
|
|
146
|
737 if (buf->pos < buf->last) {
|
|
|
738 c->buffered |= NGX_SSL_BUFFERED;
|
|
|
739
|
|
|
740 } else {
|
|
|
741 c->buffered &= ~NGX_SSL_BUFFERED;
|
|
|
742 }
|
|
0
|
743
|
|
|
744 return in;
|
|
|
745 }
|
|
|
746
|
|
|
747
|
|
88
|
748 ssize_t
|
|
38
|
749 ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size)
|
|
0
|
750 {
|
|
96
|
751 int n, sslerr;
|
|
|
752 ngx_err_t err;
|
|
0
|
753
|
|
|
754 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size);
|
|
|
755
|
|
92
|
756 n = SSL_write(c->ssl->connection, data, size);
|
|
0
|
757
|
|
|
758 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n);
|
|
|
759
|
|
|
760 if (n > 0) {
|
|
88
|
761
|
|
22
|
762 if (c->ssl->saved_read_handler) {
|
|
|
763
|
|
58
|
764 c->read->handler = c->ssl->saved_read_handler;
|
|
22
|
765 c->ssl->saved_read_handler = NULL;
|
|
|
766 c->read->ready = 1;
|
|
|
767
|
|
|
768 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
769 return NGX_ERROR;
|
|
|
770 }
|
|
|
771
|
|
112
|
772 ngx_post_event(c->read, &ngx_posted_events);
|
|
22
|
773 }
|
|
|
774
|
|
0
|
775 return n;
|
|
|
776 }
|
|
|
777
|
|
92
|
778 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
779
|
|
|
780 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
781
|
|
|
782 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr);
|
|
|
783
|
|
|
784 if (sslerr == SSL_ERROR_WANT_WRITE) {
|
|
|
785 c->write->ready = 0;
|
|
|
786 return NGX_AGAIN;
|
|
|
787 }
|
|
|
788
|
|
|
789 if (sslerr == SSL_ERROR_WANT_READ) {
|
|
2
|
790
|
|
96
|
791 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
126
|
792 "peer started SSL renegotiation");
|
|
22
|
793
|
|
|
794 c->read->ready = 0;
|
|
|
795
|
|
|
796 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
797 return NGX_ERROR;
|
|
|
798 }
|
|
|
799
|
|
|
800 /*
|
|
|
801 * we do not set the timer because there is already
|
|
|
802 * the write event timer
|
|
|
803 */
|
|
|
804
|
|
|
805 if (c->ssl->saved_read_handler == NULL) {
|
|
58
|
806 c->ssl->saved_read_handler = c->read->handler;
|
|
|
807 c->read->handler = ngx_ssl_read_handler;
|
|
22
|
808 }
|
|
|
809
|
|
0
|
810 return NGX_AGAIN;
|
|
|
811 }
|
|
|
812
|
|
96
|
813 c->ssl->no_wait_shutdown = 1;
|
|
|
814 c->ssl->no_send_shutdown = 1;
|
|
140
|
815 c->write->error = 1;
|
|
92
|
816
|
|
96
|
817 ngx_ssl_connection_error(c, sslerr, err, "SSL_write() failed");
|
|
0
|
818
|
|
|
819 return NGX_ERROR;
|
|
|
820 }
|
|
|
821
|
|
|
822
|
|
38
|
823 static void
|
|
|
824 ngx_ssl_read_handler(ngx_event_t *rev)
|
|
22
|
825 {
|
|
|
826 ngx_connection_t *c;
|
|
|
827
|
|
|
828 c = rev->data;
|
|
96
|
829
|
|
58
|
830 c->write->handler(c->write);
|
|
22
|
831 }
|
|
|
832
|
|
|
833
|
|
38
|
834 ngx_int_t
|
|
|
835 ngx_ssl_shutdown(ngx_connection_t *c)
|
|
0
|
836 {
|
|
22
|
837 int n, sslerr, mode;
|
|
140
|
838 ngx_err_t err;
|
|
0
|
839 ngx_uint_t again;
|
|
|
840
|
|
126
|
841 if (c->timedout) {
|
|
96
|
842 mode = SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN;
|
|
0
|
843
|
|
96
|
844 } else {
|
|
|
845 mode = SSL_get_shutdown(c->ssl->connection);
|
|
22
|
846
|
|
96
|
847 if (c->ssl->no_wait_shutdown) {
|
|
|
848 mode |= SSL_RECEIVED_SHUTDOWN;
|
|
0
|
849 }
|
|
|
850
|
|
96
|
851 if (c->ssl->no_send_shutdown) {
|
|
|
852 mode |= SSL_SENT_SHUTDOWN;
|
|
0
|
853 }
|
|
|
854 }
|
|
|
855
|
|
96
|
856 SSL_set_shutdown(c->ssl->connection, mode);
|
|
|
857
|
|
0
|
858 again = 0;
|
|
10
|
859 sslerr = 0;
|
|
0
|
860
|
|
|
861 for ( ;; ) {
|
|
92
|
862 n = SSL_shutdown(c->ssl->connection);
|
|
0
|
863
|
|
|
864 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n);
|
|
|
865
|
|
126
|
866 if (n == 1 || (n == 0 && c->timedout)) {
|
|
92
|
867 SSL_free(c->ssl->connection);
|
|
22
|
868 c->ssl = NULL;
|
|
92
|
869
|
|
22
|
870 return NGX_OK;
|
|
|
871 }
|
|
|
872
|
|
0
|
873 if (n == 0) {
|
|
|
874 again = 1;
|
|
|
875 break;
|
|
|
876 }
|
|
|
877
|
|
|
878 break;
|
|
|
879 }
|
|
|
880
|
|
|
881 if (!again) {
|
|
92
|
882 sslerr = SSL_get_error(c->ssl->connection, n);
|
|
0
|
883
|
|
|
884 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
885 "SSL_get_error: %d", sslerr);
|
|
|
886 }
|
|
|
887
|
|
138
|
888 if (again
|
|
|
889 || sslerr == SSL_ERROR_WANT_READ
|
|
|
890 || sslerr == SSL_ERROR_WANT_WRITE)
|
|
|
891 {
|
|
126
|
892 c->read->handler = ngx_ssl_shutdown_handler;
|
|
138
|
893 c->write->handler = ngx_ssl_shutdown_handler;
|
|
126
|
894
|
|
0
|
895 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) {
|
|
|
896 return NGX_ERROR;
|
|
|
897 }
|
|
|
898
|
|
|
899 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
|
900 return NGX_ERROR;
|
|
|
901 }
|
|
|
902
|
|
138
|
903 if (again || sslerr == SSL_ERROR_WANT_READ) {
|
|
|
904 ngx_add_timer(c->read, 30000);
|
|
|
905 }
|
|
|
906
|
|
0
|
907 return NGX_AGAIN;
|
|
|
908 }
|
|
|
909
|
|
140
|
910 err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
|
|
|
911
|
|
|
912 ngx_ssl_connection_error(c, sslerr, err, "SSL_shutdown() failed");
|
|
0
|
913
|
|
92
|
914 SSL_free(c->ssl->connection);
|
|
|
915 c->ssl = NULL;
|
|
|
916
|
|
0
|
917 return NGX_ERROR;
|
|
|
918 }
|
|
|
919
|
|
|
920
|
|
96
|
921 static void
|
|
126
|
922 ngx_ssl_shutdown_handler(ngx_event_t *ev)
|
|
|
923 {
|
|
|
924 ngx_connection_t *c;
|
|
|
925 ngx_connection_handler_pt handler;
|
|
|
926
|
|
|
927 c = ev->data;
|
|
|
928 handler = c->ssl->handler;
|
|
|
929
|
|
|
930 if (ev->timedout) {
|
|
|
931 c->timedout = 1;
|
|
|
932 }
|
|
|
933
|
|
|
934 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "SSL shutdown handler");
|
|
|
935
|
|
|
936 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
937 return;
|
|
|
938 }
|
|
|
939
|
|
|
940 handler(c);
|
|
|
941 }
|
|
|
942
|
|
|
943
|
|
|
944 static void
|
|
96
|
945 ngx_ssl_connection_error(ngx_connection_t *c, int sslerr, ngx_err_t err,
|
|
|
946 char *text)
|
|
|
947 {
|
|
|
948 ngx_uint_t level;
|
|
|
949
|
|
|
950 level = NGX_LOG_CRIT;
|
|
|
951
|
|
|
952 if (sslerr == SSL_ERROR_SYSCALL) {
|
|
|
953
|
|
|
954 if (err == NGX_ECONNRESET
|
|
|
955 || err == NGX_EPIPE
|
|
|
956 || err == NGX_ENOTCONN
|
|
138
|
957 #if !(NGX_CRIT_ETIMEDOUT)
|
|
|
958 || err == NGX_ETIMEDOUT
|
|
|
959 #endif
|
|
96
|
960 || err == NGX_ECONNREFUSED
|
|
|
961 || err == NGX_EHOSTUNREACH)
|
|
|
962 {
|
|
|
963 switch (c->log_error) {
|
|
|
964
|
|
|
965 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
966 case NGX_ERROR_INFO:
|
|
|
967 level = NGX_LOG_INFO;
|
|
|
968 break;
|
|
|
969
|
|
|
970 case NGX_ERROR_ERR:
|
|
|
971 level = NGX_LOG_ERR;
|
|
|
972 break;
|
|
|
973
|
|
|
974 default:
|
|
|
975 break;
|
|
|
976 }
|
|
|
977 }
|
|
|
978 }
|
|
|
979
|
|
|
980 ngx_ssl_error(level, c->log, err, text);
|
|
|
981 }
|
|
|
982
|
|
|
983
|
|
132
|
984 void ngx_cdecl
|
|
38
|
985 ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...)
|
|
126
|
986 {
|
|
96
|
987 u_long n;
|
|
|
988 va_list args;
|
|
10
|
989 u_char errstr[NGX_MAX_CONF_ERRSTR], *p, *last;
|
|
|
990
|
|
|
991 last = errstr + NGX_MAX_CONF_ERRSTR;
|
|
0
|
992
|
|
|
993 va_start(args, fmt);
|
|
10
|
994 p = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args);
|
|
0
|
995 va_end(args);
|
|
|
996
|
|
96
|
997 p = ngx_cpystrn(p, (u_char *) " (SSL:", last - p);
|
|
|
998
|
|
132
|
999 while (p < last) {
|
|
|
1000
|
|
|
1001 n = ERR_get_error();
|
|
|
1002
|
|
|
1003 if (n == 0) {
|
|
|
1004 break;
|
|
|
1005 }
|
|
96
|
1006
|
|
|
1007 *p++ = ' ';
|
|
0
|
1008
|
|
96
|
1009 ERR_error_string_n(n, (char *) p, last - p);
|
|
|
1010
|
|
|
1011 while (p < last && *p) {
|
|
|
1012 p++;
|
|
|
1013 }
|
|
|
1014 }
|
|
0
|
1015
|
|
|
1016 ngx_log_error(level, log, err, "%s)", errstr);
|
|
|
1017 }
|
|
58
|
1018
|
|
|
1019
|
|
|
1020 void
|
|
|
1021 ngx_ssl_cleanup_ctx(void *data)
|
|
|
1022 {
|
|
138
|
1023 ngx_ssl_t *ssl = data;
|
|
58
|
1024
|
|
138
|
1025 if (ssl->rsa512_key) {
|
|
|
1026 RSA_free(ssl->rsa512_key);
|
|
|
1027 }
|
|
108
|
1028
|
|
138
|
1029 SSL_CTX_free(ssl->ctx);
|
|
58
|
1030 }
|
|
90
|
1031
|
|
|
1032
|
|
160
|
1033 u_char *
|
|
|
1034 ngx_ssl_get_protocol(ngx_connection_t *c)
|
|
|
1035 {
|
|
|
1036 return (u_char *) SSL_get_version(c->ssl->connection);
|
|
|
1037 }
|
|
|
1038
|
|
|
1039
|
|
|
1040 u_char *
|
|
|
1041 ngx_ssl_get_cipher_name(ngx_connection_t *c)
|
|
|
1042 {
|
|
|
1043 return (u_char *) SSL_get_cipher_name(c->ssl->connection);
|
|
|
1044 }
|
|
|
1045
|
|
|
1046
|
|
196
|
1047 ngx_int_t
|
|
|
1048 ngx_ssl_get_subject_dn(ngx_connection_t *c, ngx_pool_t *pool, ngx_str_t *s)
|
|
|
1049 {
|
|
|
1050 char *p;
|
|
|
1051 size_t len;
|
|
|
1052 X509 *cert;
|
|
|
1053 X509_NAME *name;
|
|
|
1054
|
|
|
1055 s->len = 0;
|
|
|
1056
|
|
|
1057 cert = SSL_get_peer_certificate(c->ssl->connection);
|
|
|
1058
|
|
|
1059 if (cert == NULL) {
|
|
|
1060 return NGX_OK;
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 name = X509_get_subject_name(cert);
|
|
|
1064
|
|
|
1065 if (name == NULL) {
|
|
|
1066 return NGX_ERROR;
|
|
|
1067 }
|
|
|
1068
|
|
|
1069 p = X509_NAME_oneline(name, NULL, 0);
|
|
|
1070
|
|
|
1071 for (len = 0; p[len]; len++) { /* void */ }
|
|
|
1072
|
|
|
1073 s->len = len;
|
|
|
1074 s->data = ngx_palloc(pool, len);
|
|
|
1075 if (s->data == NULL) {
|
|
|
1076 OPENSSL_free(p);
|
|
|
1077 return NGX_ERROR;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 ngx_memcpy(s->data, p, len);
|
|
|
1081
|
|
|
1082 OPENSSL_free(p);
|
|
|
1083
|
|
|
1084 return NGX_OK;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087
|
|
|
1088 ngx_int_t
|
|
|
1089 ngx_ssl_get_issuer_dn(ngx_connection_t *c, ngx_pool_t *pool, ngx_str_t *s)
|
|
|
1090 {
|
|
|
1091 char *p;
|
|
|
1092 size_t len;
|
|
|
1093 X509 *cert;
|
|
|
1094 X509_NAME *name;
|
|
|
1095
|
|
|
1096 s->len = 0;
|
|
|
1097
|
|
|
1098 cert = SSL_get_peer_certificate(c->ssl->connection);
|
|
|
1099
|
|
|
1100 if (cert == NULL) {
|
|
|
1101 return NGX_OK;
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 name = X509_get_issuer_name(cert);
|
|
|
1105
|
|
|
1106 if (name == NULL) {
|
|
|
1107 return NGX_ERROR;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 p = X509_NAME_oneline(name, NULL, 0);
|
|
|
1111
|
|
|
1112 for (len = 0; p[len]; len++) { /* void */ }
|
|
|
1113
|
|
|
1114 s->len = len;
|
|
|
1115 s->data = ngx_palloc(pool, len);
|
|
|
1116 if (s->data == NULL) {
|
|
|
1117 OPENSSL_free(p);
|
|
|
1118 return NGX_ERROR;
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 ngx_memcpy(s->data, p, len);
|
|
|
1122
|
|
|
1123 OPENSSL_free(p);
|
|
|
1124
|
|
|
1125 return NGX_OK;
|
|
|
1126 }
|
|
|
1127
|
|
|
1128
|
|
90
|
1129 static void *
|
|
|
1130 ngx_openssl_create_conf(ngx_cycle_t *cycle)
|
|
|
1131 {
|
|
|
1132 ngx_openssl_conf_t *oscf;
|
|
126
|
1133
|
|
90
|
1134 oscf = ngx_pcalloc(cycle->pool, sizeof(ngx_openssl_conf_t));
|
|
|
1135 if (oscf == NULL) {
|
|
|
1136 return NGX_CONF_ERROR;
|
|
|
1137 }
|
|
126
|
1138
|
|
90
|
1139 /*
|
|
|
1140 * set by ngx_pcalloc():
|
|
126
|
1141 *
|
|
90
|
1142 * oscf->engine.len = 0;
|
|
|
1143 * oscf->engine.data = NULL;
|
|
126
|
1144 */
|
|
90
|
1145
|
|
|
1146 return oscf;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149
|
|
|
1150 static char *
|
|
|
1151 ngx_openssl_init_conf(ngx_cycle_t *cycle, void *conf)
|
|
|
1152 {
|
|
|
1153 #if (NGX_SSL_ENGINE)
|
|
|
1154 ngx_openssl_conf_t *oscf = conf;
|
|
120
|
1155
|
|
90
|
1156 ENGINE *engine;
|
|
|
1157
|
|
|
1158 if (oscf->engine.len == 0) {
|
|
|
1159 return NGX_CONF_OK;
|
|
|
1160 }
|
|
126
|
1161
|
|
90
|
1162 engine = ENGINE_by_id((const char *) oscf->engine.data);
|
|
|
1163
|
|
|
1164 if (engine == NULL) {
|
|
|
1165 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1166 "ENGINE_by_id(\"%V\") failed", &oscf->engine);
|
|
|
1167 return NGX_CONF_ERROR;
|
|
|
1168 }
|
|
|
1169
|
|
|
1170 if (ENGINE_set_default(engine, ENGINE_METHOD_ALL) == 0) {
|
|
|
1171 ngx_ssl_error(NGX_LOG_WARN, cycle->log, 0,
|
|
|
1172 "ENGINE_set_default(\"%V\", ENGINE_METHOD_ALL) failed",
|
|
|
1173 &oscf->engine);
|
|
|
1174 return NGX_CONF_ERROR;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 ENGINE_free(engine);
|
|
|
1178
|
|
|
1179 #endif
|
|
|
1180
|
|
|
1181 return NGX_CONF_OK;
|
|
|
1182 }
|
|
|
1183
|
|
|
1184
|
|
|
1185 #if !(NGX_SSL_ENGINE)
|
|
|
1186
|
|
|
1187 static char *
|
|
|
1188 ngx_openssl_noengine(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1189 {
|
|
|
1190 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
112
|
1191 "\"ssl_engine\" directive is available only in "
|
|
|
1192 "OpenSSL 0.9.7 and higher,");
|
|
90
|
1193
|
|
|
1194 return NGX_CONF_ERROR;
|
|
|
1195 }
|
|
|
1196
|
|
|
1197 #endif
|
|
120
|
1198
|
|
|
1199
|
|
|
1200 static void
|
|
|
1201 ngx_openssl_exit(ngx_cycle_t *cycle)
|
|
|
1202 {
|
|
|
1203 #if (NGX_SSL_ENGINE)
|
|
|
1204 ENGINE_cleanup();
|
|
|
1205 #endif
|
|
|
1206 }
|
