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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 #include <ngx_http.h>
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11
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12
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13 static void ngx_http_init_request(ngx_event_t *ev);
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14 #if (NGX_HTTP_SSL)
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15 static void ngx_http_ssl_handshake(ngx_event_t *rev);
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16 #endif
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17 static void ngx_http_process_request_line(ngx_event_t *rev);
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18 static void ngx_http_process_request_headers(ngx_event_t *rev);
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19 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
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20 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
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50
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21 ngx_uint_t request_line);
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58
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22
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23 static ngx_int_t ngx_http_process_header_line(ngx_http_request_t *r,
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24 ngx_table_elt_t *h, ngx_uint_t offset);
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72
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25 static ngx_int_t ngx_http_process_unique_header_line(ngx_http_request_t *r,
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26 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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27 static ngx_int_t ngx_http_process_cookie(ngx_http_request_t *r,
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28 ngx_table_elt_t *h, ngx_uint_t offset);
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29
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0
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30 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
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26
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31 static ngx_int_t ngx_http_find_virtual_server(ngx_http_request_t *r);
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0
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32
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58
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33 static void ngx_http_request_handler(ngx_event_t *ev);
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74
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34 static ngx_int_t ngx_http_set_write_handler(ngx_http_request_t *r);
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58
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35 static void ngx_http_writer(ngx_http_request_t *r);
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36 static ngx_int_t ngx_http_postponed_handler(ngx_http_request_t *r);
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37
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38 static void ngx_http_block_read(ngx_http_request_t *r);
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39 static void ngx_http_read_discarded_body_handler(ngx_http_request_t *r);
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0
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40 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r);
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41
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42 static void ngx_http_set_keepalive(ngx_http_request_t *r);
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43 static void ngx_http_keepalive_handler(ngx_event_t *ev);
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44 static void ngx_http_set_lingering_close(ngx_http_request_t *r);
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45 static void ngx_http_lingering_close_handler(ngx_event_t *ev);
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80
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46 static void ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error);
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47 static void ngx_http_close_connection(ngx_connection_t *c);
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0
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48
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32
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49 static u_char *ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len);
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58
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50 static u_char *ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf,
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51 size_t len);
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0
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52
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53
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54
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54 static char *ngx_http_client_errors[] = {
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55
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56 /* NGX_HTTP_PARSE_INVALID_METHOD */
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57 "client sent invalid method",
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58
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59 /* NGX_HTTP_PARSE_INVALID_REQUEST */
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60 "client sent invalid request",
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61
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62 /* NGX_HTTP_PARSE_INVALID_09_METHOD */
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63 "client sent invalid method in HTTP/0.9 request"
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0
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64 };
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65
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66
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67 ngx_http_header_t ngx_http_headers_in[] = {
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58
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68 { ngx_string("Host"), offsetof(ngx_http_headers_in_t, host),
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72
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69 ngx_http_process_unique_header_line },
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58
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70
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71 { ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection),
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72
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72 ngx_http_process_unique_header_line },
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58
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73
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0
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74 { ngx_string("If-Modified-Since"),
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58
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75 offsetof(ngx_http_headers_in_t, if_modified_since),
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76 ngx_http_process_header_line },
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77
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78 { ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent),
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79 ngx_http_process_header_line },
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80
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81 { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer),
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82 ngx_http_process_header_line },
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83
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0
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84 { ngx_string("Content-Length"),
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58
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85 offsetof(ngx_http_headers_in_t, content_length),
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72
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86 ngx_http_process_unique_header_line },
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58
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87
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28
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88 { ngx_string("Content-Type"),
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58
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89 offsetof(ngx_http_headers_in_t, content_type),
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90 ngx_http_process_header_line },
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91
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92 { ngx_string("Range"), offsetof(ngx_http_headers_in_t, range),
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93 ngx_http_process_header_line },
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94
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0
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95 #if (NGX_HTTP_GZIP)
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96 { ngx_string("Accept-Encoding"),
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58
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97 offsetof(ngx_http_headers_in_t, accept_encoding),
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98 ngx_http_process_header_line },
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99
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100 { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via),
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101 ngx_http_process_header_line },
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0
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102 #endif
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103
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104 { ngx_string("Authorization"),
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58
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105 offsetof(ngx_http_headers_in_t, authorization),
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72
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106 ngx_http_process_unique_header_line },
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58
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107
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108 { ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive),
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109 ngx_http_process_header_line },
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0
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110
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111 #if (NGX_HTTP_PROXY)
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112 { ngx_string("X-Forwarded-For"),
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58
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113 offsetof(ngx_http_headers_in_t, x_forwarded_for),
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114 ngx_http_process_header_line },
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0
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115 #endif
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28
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116
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38
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117 #if (NGX_HTTP_HEADERS)
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58
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118 { ngx_string("Accept"), offsetof(ngx_http_headers_in_t, accept),
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119 ngx_http_process_header_line },
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120
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38
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121 { ngx_string("Accept-Language"),
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58
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122 offsetof(ngx_http_headers_in_t, accept_language),
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123 ngx_http_process_header_line },
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38
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124 #endif
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125
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58
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126 { ngx_string("Cookie"), 0, ngx_http_process_cookie },
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127
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128 { ngx_null_string, 0, NULL }
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0
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129 };
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130
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131
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50
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132 void
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133 ngx_http_init_connection(ngx_connection_t *c)
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0
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134 {
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135 ngx_event_t *rev;
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136 ngx_http_log_ctx_t *ctx;
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137
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50
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138 ctx = ngx_palloc(c->pool, sizeof(ngx_http_log_ctx_t));
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139 if (ctx == NULL) {
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0
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140 ngx_http_close_connection(c);
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141 return;
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142 }
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143
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10
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144 ctx->client = &c->addr_text;
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145 ctx->request = NULL;
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32
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146
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147 c->log->connection = c->number;
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148 c->log->handler = ngx_http_log_error;
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0
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149 c->log->data = ctx;
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32
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150 c->log->action = "reading client request line";
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151
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0
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152 c->log_error = NGX_ERROR_INFO;
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153
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154 rev = c->read;
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58
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155 rev->handler = ngx_http_init_request;
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156
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157 /* STUB: epoll edge */ c->write->handler = ngx_http_empty_handler;
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0
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158
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159 if (rev->ready) {
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160 /* the deferred accept(), rtsig, aio, iocp */
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161
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162 if (ngx_accept_mutex) {
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163 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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42
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164
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0
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165 ngx_http_close_connection(c);
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166 return;
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167 }
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168
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169 ngx_post_event(rev);
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170
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171 ngx_mutex_unlock(ngx_posted_events_mutex);
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42
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172
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173 #if (NGX_STAT_STUB)
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44
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174 ngx_atomic_inc(ngx_stat_reading);
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42
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175 #endif
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0
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176 return;
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177 }
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178
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179 #if (NGX_STAT_STUB)
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42
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180 ngx_atomic_inc(ngx_stat_reading);
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0
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181 #endif
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182
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183 ngx_http_init_request(rev);
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184 return;
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185 }
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186
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187 ngx_add_timer(rev, c->listening->post_accept_timeout);
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188
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189 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
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190 ngx_http_close_connection(c);
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191 return;
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192 }
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193
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194 #if (NGX_STAT_STUB)
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42
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195 ngx_atomic_inc(ngx_stat_reading);
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0
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196 #endif
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197
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198 }
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199
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200
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50
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201 static
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202 void ngx_http_init_request(ngx_event_t *rev)
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0
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203 {
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204 ngx_uint_t i;
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205 socklen_t len;
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28
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206 struct sockaddr_in sin;
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0
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207 ngx_connection_t *c;
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208 ngx_http_request_t *r;
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209 ngx_http_in_port_t *in_port;
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210 ngx_http_in_addr_t *in_addr;
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54
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211 ngx_http_log_ctx_t *ctx;
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0
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212 ngx_http_connection_t *hc;
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213 ngx_http_server_name_t *server_name;
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214 ngx_http_core_srv_conf_t *cscf;
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215 ngx_http_core_loc_conf_t *clcf;
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216 #if (NGX_HTTP_SSL)
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217 ngx_http_ssl_srv_conf_t *sscf;
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218 #endif
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219
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220 c = rev->data;
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221
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222 if (rev->timedout) {
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223 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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224
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225 #if (NGX_STAT_STUB)
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42
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226 ngx_atomic_dec(ngx_stat_reading);
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0
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227 #endif
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228
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229 ngx_http_close_connection(c);
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230 return;
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231 }
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232
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233 hc = c->data;
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234
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235 if (hc) {
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236
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237 #if (NGX_STAT_STUB)
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42
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238 ngx_atomic_inc(ngx_stat_reading);
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0
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239 #endif
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240
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241 } else {
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50
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242 hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t));
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243 if (hc == NULL) {
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0
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244
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245 #if (NGX_STAT_STUB)
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42
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246 ngx_atomic_dec(ngx_stat_reading);
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0
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247 #endif
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248
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249 ngx_http_close_connection(c);
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250 return;
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251 }
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252 }
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253
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254 r = hc->request;
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255
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256 if (r) {
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257 ngx_memzero(r, sizeof(ngx_http_request_t));
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258
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259 r->pipeline = hc->pipeline;
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260
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261 if (hc->nbusy) {
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262 r->header_in = hc->busy[0];
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263 }
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264
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265 } else {
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50
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266 r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t));
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267 if (r == NULL) {
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0
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268
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269 #if (NGX_STAT_STUB)
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42
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270 ngx_atomic_dec(ngx_stat_reading);
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0
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271 #endif
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272
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273 ngx_http_close_connection(c);
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274 return;
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275 }
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276
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277 hc->request = r;
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278 }
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279
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280 #if (NGX_STAT_STUB)
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42
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281 ngx_atomic_dec(ngx_stat_reading);
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0
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282 #endif
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283
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284 c->data = r;
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285 r->http_connection = hc;
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286
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287 c->sent = 0;
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288 r->signature = NGX_HTTP_MODULE;
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289
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290 /* find the server configuration for the address:port */
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291
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292 /* AF_INET only */
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293
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294 in_port = c->servers;
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295 in_addr = in_port->addrs.elts;
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296
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297 r->port = in_port->port;
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298 r->port_text = &in_port->port_text;
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299
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300 i = 0;
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301
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302 if (in_port->addrs.nelts > 1) {
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303
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304 /*
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305 * There are several addresses on this port and one of them
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306 * is the "*:port" wildcard so getsockname() is needed to determine
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307 * the server address.
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308 *
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309 * AcceptEx() already gave this address.
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310 */
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311
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10
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312 #if (NGX_WIN32)
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0
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313 if (c->local_sockaddr) {
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314 r->in_addr =
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315 ((struct sockaddr_in *) c->local_sockaddr)->sin_addr.s_addr;
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316
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28
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317 } else
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0
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318 #endif
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28
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319 {
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0
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320 len = sizeof(struct sockaddr_in);
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28
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321 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
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0
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322 ngx_connection_error(c, ngx_socket_errno,
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323 "getsockname() failed");
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324 ngx_http_close_connection(c);
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325 return;
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326 }
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327
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28
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328 r->in_addr = sin.sin_addr.s_addr;
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0
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329 }
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330
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331 /* the last in_port->addrs address is "*" */
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332
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333 for ( /* void */ ; i < in_port->addrs.nelts - 1; i++) {
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334 if (in_addr[i].addr == r->in_addr) {
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335 break;
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336 }
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337 }
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338
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339 } else {
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340 r->in_addr = in_addr[0].addr;
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341 }
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342
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26
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343 r->virtual_names = &in_addr[i];
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0
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344
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345 /* the default server configuration for the address:port */
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346 cscf = in_addr[i].core_srv_conf;
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347
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348 r->main_conf = cscf->ctx->main_conf;
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349 r->srv_conf = cscf->ctx->srv_conf;
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350 r->loc_conf = cscf->ctx->loc_conf;
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351
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58
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352 rev->handler = ngx_http_process_request_line;
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0
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353
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354 #if (NGX_HTTP_SSL)
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355
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356 sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module);
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357 if (sscf->enable) {
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358
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359 if (c->ssl == NULL) {
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360 if (ngx_ssl_create_session(sscf->ssl_ctx, c, NGX_SSL_BUFFER)
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56
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361 == NGX_ERROR)
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0
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362 {
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363 ngx_http_close_connection(c);
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364 return;
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365 }
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366
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58
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367 rev->handler = ngx_http_ssl_handshake;
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26
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368
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0
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369 /*
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370 * The majority of browsers do not send the "close notify" alert.
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371 * Among them are MSIE, Mozilla, Netscape 4, Konqueror, and Links.
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54
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372 * And what is more, MSIE ignores the server's alert.
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0
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373 *
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374 * Opera always sends the alert.
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375 */
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376
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377 c->ssl->no_rcv_shut = 1;
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378 }
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379
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62
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380 r->main_filter_need_in_memory = 1;
|
|
0
|
381 }
|
|
|
382
|
|
|
383 #endif
|
|
|
384
|
|
|
385 server_name = cscf->server_names.elts;
|
|
6
|
386 r->server_name = server_name->name;
|
|
0
|
387
|
|
|
388 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
389 c->log->file = clcf->err_log->file;
|
|
|
390 if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
|
391 c->log->log_level = clcf->err_log->log_level;
|
|
|
392 }
|
|
|
393
|
|
|
394 if (c->buffer == NULL) {
|
|
|
395 c->buffer = ngx_create_temp_buf(c->pool,
|
|
|
396 cscf->client_header_buffer_size);
|
|
|
397 if (c->buffer == NULL) {
|
|
|
398 ngx_http_close_connection(c);
|
|
|
399 return;
|
|
|
400 }
|
|
|
401 }
|
|
|
402
|
|
|
403 if (r->header_in == NULL) {
|
|
|
404 r->header_in = c->buffer;
|
|
|
405 }
|
|
|
406
|
|
50
|
407 r->pool = ngx_create_pool(cscf->request_pool_size, c->log);
|
|
|
408 if (r->pool == NULL) {
|
|
0
|
409 ngx_http_close_connection(c);
|
|
|
410 return;
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 if (ngx_list_init(&r->headers_out.headers, r->pool, 20,
|
|
58
|
415 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
0
|
416 {
|
|
|
417 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
418 ngx_http_close_connection(c);
|
|
|
419 return;
|
|
|
420 }
|
|
|
421
|
|
|
422
|
|
|
423 r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
424 if (r->ctx == NULL) {
|
|
|
425 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
426 ngx_http_close_connection(c);
|
|
|
427 return;
|
|
|
428 }
|
|
|
429
|
|
|
430 c->single_connection = 1;
|
|
|
431 r->connection = c;
|
|
|
432
|
|
46
|
433 r->start_time = ngx_time();
|
|
|
434
|
|
0
|
435 r->headers_in.content_length_n = -1;
|
|
|
436 r->headers_in.keep_alive_n = -1;
|
|
|
437 r->headers_out.content_length_n = -1;
|
|
|
438 r->headers_out.last_modified_time = -1;
|
|
|
439
|
|
|
440 r->http_state = NGX_HTTP_READING_REQUEST_STATE;
|
|
|
441
|
|
54
|
442 ctx = c->log->data;
|
|
|
443 ctx->request = r;
|
|
58
|
444 r->log_handler = ngx_http_log_error_handler;
|
|
54
|
445
|
|
0
|
446 #if (NGX_STAT_STUB)
|
|
42
|
447 ngx_atomic_inc(ngx_stat_reading);
|
|
26
|
448 r->stat_reading = 1;
|
|
42
|
449 ngx_atomic_inc(ngx_stat_requests);
|
|
0
|
450 #endif
|
|
|
451
|
|
58
|
452 rev->handler(rev);
|
|
0
|
453 }
|
|
|
454
|
|
|
455
|
|
|
456 #if (NGX_HTTP_SSL)
|
|
|
457
|
|
50
|
458 static void
|
|
|
459 ngx_http_ssl_handshake(ngx_event_t *rev)
|
|
0
|
460 {
|
|
10
|
461 u_char buf[1];
|
|
|
462 ssize_t n;
|
|
0
|
463 ngx_int_t rc;
|
|
|
464 ngx_connection_t *c;
|
|
|
465 ngx_http_request_t *r;
|
|
|
466
|
|
|
467 c = rev->data;
|
|
|
468 r = c->data;
|
|
|
469
|
|
|
470 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
471 "http check ssl handshake");
|
|
|
472
|
|
|
473 if (rev->timedout) {
|
|
54
|
474 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
475 c->timedout = 1;
|
|
|
476 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
477 ngx_http_close_connection(c);
|
|
0
|
478 return;
|
|
|
479 }
|
|
|
480
|
|
|
481 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
482
|
|
|
483 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
|
|
|
484 return;
|
|
|
485 }
|
|
|
486
|
|
|
487 if (n == 1) {
|
|
|
488 if (buf[0] == 0x80 /* SSLv2 */ || buf[0] == 0x16 /* SSLv3/TLSv1 */) {
|
|
|
489 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
10
|
490 "https ssl handshake: 0x%02Xd", buf[0]);
|
|
0
|
491
|
|
|
492 c->recv = ngx_ssl_recv;
|
|
|
493 c->send_chain = ngx_ssl_send_chain;
|
|
|
494
|
|
|
495 rc = ngx_ssl_handshake(c);
|
|
|
496
|
|
|
497 if (rc == NGX_ERROR) {
|
|
|
498 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
499 ngx_http_close_connection(r->connection);
|
|
|
500 return;
|
|
|
501 }
|
|
|
502
|
|
|
503 if (rc != NGX_OK) {
|
|
|
504 return;
|
|
|
505 }
|
|
|
506
|
|
|
507 } else {
|
|
|
508 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
509 "plain http");
|
|
|
510
|
|
|
511 r->plain_http = 1;
|
|
|
512 }
|
|
|
513 }
|
|
|
514
|
|
58
|
515 rev->handler = ngx_http_process_request_line;
|
|
0
|
516 ngx_http_process_request_line(rev);
|
|
|
517 }
|
|
|
518
|
|
|
519 #endif
|
|
|
520
|
|
|
521
|
|
50
|
522 static void
|
|
|
523 ngx_http_process_request_line(ngx_event_t *rev)
|
|
0
|
524 {
|
|
|
525 ssize_t n;
|
|
|
526 ngx_int_t rc, rv;
|
|
|
527 ngx_connection_t *c;
|
|
|
528 ngx_http_request_t *r;
|
|
|
529 ngx_http_log_ctx_t *ctx;
|
|
|
530
|
|
|
531 c = rev->data;
|
|
|
532 r = c->data;
|
|
|
533
|
|
|
534 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
535 "http process request line");
|
|
|
536
|
|
|
537 if (rev->timedout) {
|
|
54
|
538 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
539 c->timedout = 1;
|
|
|
540 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
541 ngx_http_close_connection(c);
|
|
0
|
542 return;
|
|
|
543 }
|
|
|
544
|
|
|
545 rc = NGX_AGAIN;
|
|
|
546
|
|
|
547 for ( ;; ) {
|
|
|
548
|
|
|
549 if (rc == NGX_AGAIN) {
|
|
|
550 n = ngx_http_read_request_header(r);
|
|
|
551
|
|
|
552 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
553 return;
|
|
|
554 }
|
|
|
555 }
|
|
|
556
|
|
|
557 rc = ngx_http_parse_request_line(r, r->header_in);
|
|
|
558
|
|
|
559 if (rc == NGX_OK) {
|
|
|
560
|
|
|
561 /* the request line has been parsed successfully */
|
|
|
562
|
|
10
|
563 r->request_line.len = r->request_end - r->request_start;
|
|
|
564 r->request_line.data = r->request_start;
|
|
|
565
|
|
0
|
566
|
|
|
567 if (r->args_start) {
|
|
|
568 r->uri.len = r->args_start - 1 - r->uri_start;
|
|
|
569 } else {
|
|
|
570 r->uri.len = r->uri_end - r->uri_start;
|
|
|
571 }
|
|
|
572
|
|
18
|
573
|
|
2
|
574 if (r->complex_uri || r->quoted_uri) {
|
|
10
|
575
|
|
50
|
576 r->uri.data = ngx_palloc(r->pool, r->uri.len + 1);
|
|
|
577 if (r->uri.data == NULL) {
|
|
10
|
578 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
579 ngx_http_close_connection(c);
|
|
|
580 return;
|
|
|
581 }
|
|
|
582
|
|
0
|
583 rc = ngx_http_parse_complex_uri(r);
|
|
|
584
|
|
54
|
585 if (rc == NGX_HTTP_PARSE_INVALID_REQUEST) {
|
|
|
586 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
587 "client sent invalid request");
|
|
|
588 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
0
|
589 return;
|
|
|
590 }
|
|
|
591
|
|
|
592 } else {
|
|
10
|
593 r->uri.data = r->uri_start;
|
|
0
|
594 }
|
|
|
595
|
|
18
|
596
|
|
10
|
597 r->unparsed_uri.len = r->uri_end - r->uri_start;
|
|
|
598 r->unparsed_uri.data = r->uri_start;
|
|
|
599
|
|
0
|
600
|
|
58
|
601 r->method_name.len = r->method_end - r->request_start + 1;
|
|
|
602 r->method_name.data = r->request_line.data;
|
|
0
|
603
|
|
10
|
604
|
|
28
|
605 if (r->http_protocol.data) {
|
|
|
606 r->http_protocol.len = r->request_end - r->http_protocol.data;
|
|
|
607 }
|
|
|
608
|
|
|
609
|
|
0
|
610 if (r->uri_ext) {
|
|
|
611 if (r->args_start) {
|
|
|
612 r->exten.len = r->args_start - 1 - r->uri_ext;
|
|
|
613 } else {
|
|
|
614 r->exten.len = r->uri_end - r->uri_ext;
|
|
|
615 }
|
|
|
616
|
|
10
|
617 r->exten.data = r->uri_ext;
|
|
0
|
618 }
|
|
|
619
|
|
10
|
620
|
|
0
|
621 if (r->args_start && r->uri_end > r->args_start) {
|
|
|
622 r->args.len = r->uri_end - r->args_start;
|
|
10
|
623 r->args.data = r->args_start;
|
|
0
|
624 }
|
|
|
625
|
|
10
|
626
|
|
|
627 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
628 "http request line: \"%V\"", &r->request_line);
|
|
|
629
|
|
0
|
630 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
631 "http uri: \"%V\"", &r->uri);
|
|
0
|
632
|
|
|
633 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
634 "http args: \"%V\"", &r->args);
|
|
0
|
635
|
|
|
636 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
637 "http exten: \"%V\"", &r->exten);
|
|
|
638
|
|
0
|
639 if (r->http_version < NGX_HTTP_VERSION_10) {
|
|
58
|
640 r->read_event_handler = ngx_http_block_read;
|
|
0
|
641 ngx_http_handler(r);
|
|
|
642 return;
|
|
|
643 }
|
|
|
644
|
|
|
645
|
|
|
646 if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
|
|
|
647 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
648 {
|
|
|
649 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
650 ngx_http_close_connection(c);
|
|
|
651 return;
|
|
|
652 }
|
|
|
653
|
|
|
654
|
|
48
|
655 if (ngx_array_init(&r->headers_in.cookies, r->pool, 2,
|
|
0
|
656 sizeof(ngx_table_elt_t *)) == NGX_ERROR)
|
|
|
657 {
|
|
|
658 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
659 ngx_http_close_connection(c);
|
|
|
660 return;
|
|
|
661 }
|
|
|
662
|
|
32
|
663 c->log->action = "reading client request headers";
|
|
0
|
664
|
|
58
|
665 rev->handler = ngx_http_process_request_headers;
|
|
0
|
666 ngx_http_process_request_headers(rev);
|
|
|
667
|
|
|
668 return;
|
|
54
|
669 }
|
|
|
670
|
|
|
671 if (rc != NGX_AGAIN) {
|
|
0
|
672
|
|
|
673 /* there was error while a request line parsing */
|
|
|
674
|
|
54
|
675 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
676 ngx_http_client_errors[rc - NGX_HTTP_CLIENT_ERROR]);
|
|
|
677 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
0
|
678 return;
|
|
|
679 }
|
|
|
680
|
|
|
681 /* NGX_AGAIN: a request line parsing is still incomplete */
|
|
|
682
|
|
|
683 if (r->header_in->pos == r->header_in->end) {
|
|
|
684
|
|
|
685 rv = ngx_http_alloc_large_header_buffer(r, 1);
|
|
|
686
|
|
|
687 if (rv == NGX_ERROR) {
|
|
|
688 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
689 ngx_http_close_connection(c);
|
|
|
690 return;
|
|
|
691 }
|
|
|
692
|
|
|
693 if (rv == NGX_DECLINED) {
|
|
54
|
694 ctx = c->log->data;
|
|
|
695 ctx->request = r;
|
|
|
696
|
|
|
697 r->request_line.len = r->header_in->end - r->request_start;
|
|
|
698 r->request_line.data = r->request_start;
|
|
|
699
|
|
|
700 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
701 "client sent too long URI");
|
|
|
702 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_URI_TOO_LARGE);
|
|
0
|
703 return;
|
|
|
704 }
|
|
|
705 }
|
|
|
706 }
|
|
|
707 }
|
|
|
708
|
|
|
709
|
|
50
|
710 static void
|
|
|
711 ngx_http_process_request_headers(ngx_event_t *rev)
|
|
0
|
712 {
|
|
56
|
713 ssize_t n;
|
|
|
714 ngx_int_t rc, rv;
|
|
|
715 ngx_uint_t key;
|
|
|
716 ngx_str_t header;
|
|
58
|
717 ngx_table_elt_t *h;
|
|
56
|
718 ngx_connection_t *c;
|
|
|
719 ngx_http_header_t *hh;
|
|
|
720 ngx_http_request_t *r;
|
|
60
|
721 ngx_http_core_srv_conf_t *cscf;
|
|
56
|
722 ngx_http_core_main_conf_t *cmcf;
|
|
0
|
723
|
|
|
724 c = rev->data;
|
|
|
725 r = c->data;
|
|
|
726
|
|
|
727 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
728 "http process request header line");
|
|
|
729
|
|
|
730 if (rev->timedout) {
|
|
54
|
731 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
732 c->timedout = 1;
|
|
|
733 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
734 ngx_http_close_connection(c);
|
|
0
|
735 return;
|
|
|
736 }
|
|
|
737
|
|
56
|
738 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
60
|
739 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
56
|
740 hh = (ngx_http_header_t *) cmcf->headers_in_hash.buckets;
|
|
|
741
|
|
0
|
742 rc = NGX_AGAIN;
|
|
|
743
|
|
|
744 for ( ;; ) {
|
|
|
745
|
|
|
746 if (rc == NGX_AGAIN) {
|
|
|
747
|
|
|
748 if (r->header_in->pos == r->header_in->end) {
|
|
|
749
|
|
|
750 rv = ngx_http_alloc_large_header_buffer(r, 0);
|
|
|
751
|
|
|
752 if (rv == NGX_ERROR) {
|
|
|
753 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
754 ngx_http_close_connection(c);
|
|
|
755 return;
|
|
|
756 }
|
|
|
757
|
|
|
758 if (rv == NGX_DECLINED) {
|
|
54
|
759 header.len = r->header_in->end - r->header_name_start;
|
|
|
760 header.data = r->header_name_start;
|
|
80
|
761
|
|
|
762 if (header.len > NGX_MAX_ERROR_STR - 300) {
|
|
|
763 header.len = NGX_MAX_ERROR_STR - 300;
|
|
|
764 header.data[header.len++] = '.';
|
|
|
765 header.data[header.len++] = '.';
|
|
|
766 header.data[header.len++] = '.';
|
|
|
767 }
|
|
|
768
|
|
54
|
769 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
770 "client sent too long header line: \"%V\"",
|
|
|
771 &header);
|
|
|
772 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
773 ngx_http_close_connection(c);
|
|
0
|
774 return;
|
|
|
775 }
|
|
|
776 }
|
|
|
777
|
|
|
778 n = ngx_http_read_request_header(r);
|
|
|
779
|
|
|
780 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
781 return;
|
|
|
782 }
|
|
|
783 }
|
|
|
784
|
|
|
785 rc = ngx_http_parse_header_line(r, r->header_in);
|
|
|
786
|
|
|
787 if (rc == NGX_OK) {
|
|
|
788
|
|
60
|
789 if (r->invalid_header && cscf->ignore_invalid_headers) {
|
|
52
|
790
|
|
|
791 /* there was error while a header line parsing */
|
|
|
792
|
|
|
793 header.len = r->header_end - r->header_name_start;
|
|
|
794 header.data = r->header_name_start;
|
|
|
795
|
|
54
|
796 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
797 "client sent invalid header line: \"%V\"",
|
|
52
|
798 &header);
|
|
|
799 continue;
|
|
|
800 }
|
|
|
801
|
|
0
|
802 /* a header line has been parsed successfully */
|
|
|
803
|
|
50
|
804 h = ngx_list_push(&r->headers_in.headers);
|
|
|
805 if (h == NULL) {
|
|
0
|
806 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
807 ngx_http_close_connection(c);
|
|
|
808 return;
|
|
|
809 }
|
|
|
810
|
|
56
|
811 h->hash = r->header_hash;
|
|
|
812
|
|
0
|
813 h->key.len = r->header_name_end - r->header_name_start;
|
|
|
814 h->key.data = r->header_name_start;
|
|
|
815 h->key.data[h->key.len] = '\0';
|
|
|
816
|
|
|
817 h->value.len = r->header_end - r->header_start;
|
|
|
818 h->value.data = r->header_start;
|
|
|
819 h->value.data[h->value.len] = '\0';
|
|
|
820
|
|
58
|
821 key = h->hash % cmcf->headers_in_hash.hash_size;
|
|
|
822
|
|
|
823 if (hh[key].name.len == h->key.len
|
|
|
824 && ngx_strcasecmp(hh[key].name.data, h->key.data) == 0)
|
|
0
|
825 {
|
|
58
|
826 if (hh[key].handler(r, h, hh[key].offset) != NGX_OK) {
|
|
0
|
827 return;
|
|
|
828 }
|
|
|
829 }
|
|
|
830
|
|
|
831 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
832 "http header: \"%V: %V\"",
|
|
|
833 &h->key, &h->value);
|
|
0
|
834
|
|
|
835 continue;
|
|
54
|
836 }
|
|
|
837
|
|
|
838 if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
|
|
0
|
839
|
|
|
840 /* a whole header has been parsed successfully */
|
|
|
841
|
|
|
842 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
843 "http header done");
|
|
|
844
|
|
24
|
845 r->request_length += r->header_in->pos - r->header_in->start;
|
|
|
846
|
|
0
|
847 r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
|
|
|
848
|
|
|
849 rc = ngx_http_process_request_header(r);
|
|
|
850
|
|
|
851 if (rc != NGX_OK) {
|
|
|
852 return;
|
|
|
853 }
|
|
|
854
|
|
|
855 if (rev->timer_set) {
|
|
|
856 ngx_del_timer(rev);
|
|
|
857 }
|
|
|
858
|
|
|
859 #if (NGX_STAT_STUB)
|
|
42
|
860 ngx_atomic_dec(ngx_stat_reading);
|
|
0
|
861 r->stat_reading = 0;
|
|
42
|
862 ngx_atomic_inc(ngx_stat_writing);
|
|
0
|
863 r->stat_writing = 1;
|
|
|
864 #endif
|
|
|
865
|
|
58
|
866 rev->handler = ngx_http_request_handler;
|
|
|
867 c->write->handler = ngx_http_request_handler;
|
|
|
868 r->read_event_handler = ngx_http_block_read;
|
|
|
869
|
|
0
|
870 ngx_http_handler(r);
|
|
|
871 return;
|
|
54
|
872 }
|
|
|
873
|
|
|
874 if (rc == NGX_AGAIN) {
|
|
|
875
|
|
|
876 /* a header line parsing is still not complete */
|
|
|
877
|
|
|
878 continue;
|
|
0
|
879 }
|
|
|
880
|
|
54
|
881 /* rc == NGX_HTTP_PARSE_INVALID_HEADER: "\r" is not followed by "\n" */
|
|
|
882
|
|
|
883 header.len = r->header_end - r->header_name_start;
|
|
|
884 header.data = r->header_name_start;
|
|
|
885 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
886 "client sent invalid header line: \"%V\\r...\"",
|
|
|
887 &header);
|
|
|
888 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
889 ngx_http_close_connection(c);
|
|
|
890 return;
|
|
0
|
891 }
|
|
|
892 }
|
|
|
893
|
|
|
894
|
|
50
|
895 static ssize_t
|
|
|
896 ngx_http_read_request_header(ngx_http_request_t *r)
|
|
0
|
897 {
|
|
|
898 ssize_t n;
|
|
|
899 ngx_event_t *rev;
|
|
|
900 ngx_http_core_srv_conf_t *cscf;
|
|
|
901
|
|
|
902 rev = r->connection->read;
|
|
|
903
|
|
|
904 n = r->header_in->last - r->header_in->pos;
|
|
|
905
|
|
|
906 if (n > 0) {
|
|
|
907 return n;
|
|
|
908 }
|
|
|
909
|
|
72
|
910 if (rev->ready) {
|
|
|
911 n = r->connection->recv(r->connection, r->header_in->last,
|
|
|
912 r->header_in->end - r->header_in->last);
|
|
|
913 } else {
|
|
|
914 n = NGX_AGAIN;
|
|
0
|
915 }
|
|
|
916
|
|
|
917 if (n == NGX_AGAIN) {
|
|
|
918 if (!r->header_timeout_set) {
|
|
|
919 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
920 ngx_add_timer(rev, cscf->client_header_timeout);
|
|
|
921 r->header_timeout_set = 1;
|
|
|
922 }
|
|
|
923
|
|
|
924 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
925 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
926 ngx_http_close_connection(r->connection);
|
|
|
927 return NGX_ERROR;
|
|
|
928 }
|
|
|
929
|
|
|
930 return NGX_AGAIN;
|
|
|
931 }
|
|
|
932
|
|
|
933 if (n == 0) {
|
|
|
934 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
935 "client closed prematurely connection");
|
|
|
936 }
|
|
|
937
|
|
|
938 if (n == 0 || n == NGX_ERROR) {
|
|
|
939 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
940 ngx_http_close_connection(r->connection);
|
|
|
941 return NGX_ERROR;
|
|
|
942 }
|
|
|
943
|
|
|
944 r->header_in->last += n;
|
|
|
945
|
|
|
946 return n;
|
|
|
947 }
|
|
|
948
|
|
|
949
|
|
50
|
950 static ngx_int_t
|
|
|
951 ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
|
|
|
952 ngx_uint_t request_line)
|
|
0
|
953 {
|
|
|
954 u_char *old, *new;
|
|
|
955 ngx_buf_t *b;
|
|
|
956 ngx_http_connection_t *hc;
|
|
|
957 ngx_http_core_srv_conf_t *cscf;
|
|
|
958
|
|
|
959 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
960 "http alloc large header buffer");
|
|
|
961
|
|
|
962 if (request_line && r->state == 0) {
|
|
|
963
|
|
|
964 /* the client fills up the buffer with "\r\n" */
|
|
|
965
|
|
24
|
966 r->request_length += r->header_in->end - r->header_in->start;
|
|
|
967
|
|
0
|
968 r->header_in->pos = r->header_in->start;
|
|
|
969 r->header_in->last = r->header_in->start;
|
|
|
970
|
|
|
971 return NGX_OK;
|
|
|
972 }
|
|
|
973
|
|
|
974 old = request_line ? r->request_start : r->header_name_start;
|
|
|
975
|
|
|
976 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
977
|
|
|
978 if (r->state != 0
|
|
|
979 && (size_t) (r->header_in->pos - old)
|
|
|
980 >= cscf->large_client_header_buffers.size)
|
|
|
981 {
|
|
|
982 return NGX_DECLINED;
|
|
|
983 }
|
|
|
984
|
|
|
985 hc = r->http_connection;
|
|
|
986
|
|
|
987 if (hc->nfree) {
|
|
|
988 b = hc->free[--hc->nfree];
|
|
|
989
|
|
|
990 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
991 "http large header free: %p %uz",
|
|
0
|
992 b->pos, b->end - b->last);
|
|
|
993
|
|
|
994 } else if (hc->nbusy < cscf->large_client_header_buffers.num) {
|
|
|
995
|
|
|
996 if (hc->busy == NULL) {
|
|
|
997 hc->busy = ngx_palloc(r->connection->pool,
|
|
|
998 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
999 if (hc->busy == NULL) {
|
|
|
1000 return NGX_ERROR;
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 b = ngx_create_temp_buf(r->connection->pool,
|
|
|
1005 cscf->large_client_header_buffers.size);
|
|
|
1006 if (b == NULL) {
|
|
|
1007 return NGX_ERROR;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1011 "http large header alloc: %p %uz",
|
|
0
|
1012 b->pos, b->end - b->last);
|
|
|
1013
|
|
|
1014 } else {
|
|
|
1015 return NGX_DECLINED;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 hc->busy[hc->nbusy++] = b;
|
|
|
1019
|
|
|
1020 if (r->state == 0) {
|
|
|
1021 /*
|
|
|
1022 * r->state == 0 means that a header line was parsed successfully
|
|
|
1023 * and we do not need to copy incomplete header line and
|
|
|
1024 * to relocate the parser header pointers
|
|
|
1025 */
|
|
|
1026
|
|
24
|
1027 r->request_length += r->header_in->end - r->header_in->start;
|
|
|
1028
|
|
0
|
1029 r->header_in = b;
|
|
|
1030
|
|
|
1031 return NGX_OK;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1035 "http large header copy: %d", r->header_in->pos - old);
|
|
|
1036
|
|
24
|
1037 r->request_length += old - r->header_in->start;
|
|
|
1038
|
|
0
|
1039 new = b->start;
|
|
|
1040
|
|
|
1041 ngx_memcpy(new, old, r->header_in->pos - old);
|
|
|
1042
|
|
|
1043 b->pos = new + (r->header_in->pos - old);
|
|
|
1044 b->last = new + (r->header_in->pos - old);
|
|
|
1045
|
|
|
1046 if (request_line) {
|
|
|
1047 r->request_start = new;
|
|
|
1048
|
|
|
1049 if (r->request_end) {
|
|
|
1050 r->request_end = new + (r->request_end - old);
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 r->method_end = new + (r->method_end - old);
|
|
|
1054
|
|
|
1055 r->uri_start = new + (r->uri_start - old);
|
|
|
1056 r->uri_end = new + (r->uri_end - old);
|
|
|
1057
|
|
|
1058 if (r->schema_start) {
|
|
|
1059 r->schema_start = new + (r->schema_start - old);
|
|
|
1060 r->schema_end = new + (r->schema_end - old);
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 if (r->host_start) {
|
|
|
1064 r->host_start = new + (r->host_start - old);
|
|
|
1065 r->host_end = new + (r->host_end - old);
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 if (r->port_start) {
|
|
|
1069 r->port_start = new + (r->port_start - old);
|
|
|
1070 r->port_end = new + (r->port_end - old);
|
|
|
1071 }
|
|
|
1072
|
|
|
1073 if (r->uri_ext) {
|
|
|
1074 r->uri_ext = new + (r->uri_ext - old);
|
|
|
1075 }
|
|
|
1076
|
|
|
1077 if (r->args_start) {
|
|
|
1078 r->args_start = new + (r->args_start - old);
|
|
|
1079 }
|
|
|
1080
|
|
|
1081 } else {
|
|
|
1082 r->header_name_start = new;
|
|
|
1083 r->header_name_end = new + (r->header_name_end - old);
|
|
|
1084 r->header_start = new + (r->header_start - old);
|
|
|
1085 r->header_end = new + (r->header_end - old);
|
|
|
1086 }
|
|
|
1087
|
|
|
1088 r->header_in = b;
|
|
|
1089
|
|
|
1090 return NGX_OK;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093
|
|
50
|
1094 static ngx_int_t
|
|
58
|
1095 ngx_http_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1096 ngx_uint_t offset)
|
|
|
1097 {
|
|
|
1098 ngx_table_elt_t **ph;
|
|
|
1099
|
|
|
1100 ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);
|
|
|
1101
|
|
|
1102 if (*ph == NULL) {
|
|
|
1103 *ph = h;
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 return NGX_OK;
|
|
|
1107 }
|
|
|
1108
|
|
|
1109
|
|
|
1110 static ngx_int_t
|
|
72
|
1111 ngx_http_process_unique_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1112 ngx_uint_t offset)
|
|
|
1113 {
|
|
|
1114 ngx_table_elt_t **ph;
|
|
|
1115
|
|
|
1116 ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);
|
|
|
1117
|
|
|
1118 if (*ph == NULL) {
|
|
|
1119 *ph = h;
|
|
|
1120 return NGX_OK;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1124 "client sent duplicate header line: \"%V: %V\"",
|
|
|
1125 &h->key, &h->value);
|
|
|
1126
|
|
|
1127 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1128
|
|
|
1129 return NGX_ERROR;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132
|
|
|
1133 static ngx_int_t
|
|
58
|
1134 ngx_http_process_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1135 ngx_uint_t offset)
|
|
|
1136 {
|
|
|
1137 ngx_table_elt_t **cookie;
|
|
|
1138
|
|
|
1139 cookie = ngx_array_push(&r->headers_in.cookies);
|
|
72
|
1140 if (cookie) {
|
|
|
1141 *cookie = h;
|
|
|
1142 return NGX_OK;
|
|
58
|
1143 }
|
|
|
1144
|
|
72
|
1145 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1146 ngx_http_close_connection(r->connection);
|
|
|
1147
|
|
|
1148 return NGX_ERROR;
|
|
58
|
1149 }
|
|
|
1150
|
|
|
1151
|
|
|
1152 static ngx_int_t
|
|
50
|
1153 ngx_http_process_request_header(ngx_http_request_t *r)
|
|
0
|
1154 {
|
|
54
|
1155 size_t len;
|
|
|
1156 u_char *ua, *user_agent, ch;
|
|
|
1157 ngx_http_core_srv_conf_t *cscf;
|
|
0
|
1158
|
|
|
1159 if (r->headers_in.host) {
|
|
|
1160 for (len = 0; len < r->headers_in.host->value.len; len++) {
|
|
26
|
1161 ch = r->headers_in.host->value.data[len];
|
|
|
1162
|
|
|
1163 if (ch == ':') {
|
|
0
|
1164 break;
|
|
|
1165 }
|
|
26
|
1166
|
|
|
1167 r->headers_in.host->value.data[len] = ngx_tolower(ch);
|
|
0
|
1168 }
|
|
54
|
1169
|
|
58
|
1170 if (r->headers_in.host->value.data[len - 1] == '.') {
|
|
|
1171 len--;
|
|
|
1172 }
|
|
|
1173
|
|
0
|
1174 r->headers_in.host_name_len = len;
|
|
|
1175
|
|
26
|
1176 if (ngx_http_find_virtual_server(r) != NGX_OK) {
|
|
54
|
1177 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1178 "client sent invalid \"Host\" header");
|
|
|
1179
|
|
|
1180 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1181
|
|
|
1182 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_CLOSE) {
|
|
|
1183 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1184 ngx_http_close_connection(r->connection);
|
|
|
1185 return NGX_ERROR;
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 ngx_http_finalize_request(r, NGX_HTTP_INVALID_HOST);
|
|
|
1189 return NGX_ERROR;
|
|
0
|
1190 }
|
|
|
1191
|
|
|
1192 } else {
|
|
|
1193 if (r->http_version > NGX_HTTP_VERSION_10) {
|
|
54
|
1194 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1195 "client sent HTTP/1.1 request without \"Host\" header");
|
|
|
1196 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1197 return NGX_ERROR;
|
|
0
|
1198 }
|
|
54
|
1199
|
|
0
|
1200 r->headers_in.host_name_len = 0;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 if (r->headers_in.content_length) {
|
|
|
1204 r->headers_in.content_length_n =
|
|
50
|
1205 ngx_atosz(r->headers_in.content_length->value.data,
|
|
0
|
1206 r->headers_in.content_length->value.len);
|
|
|
1207
|
|
|
1208 if (r->headers_in.content_length_n == NGX_ERROR) {
|
|
54
|
1209 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1210 "client sent invalid \"Content-Length\" header");
|
|
|
1211 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1212 return NGX_ERROR;
|
|
0
|
1213 }
|
|
|
1214 }
|
|
|
1215
|
|
32
|
1216 if (r->method == NGX_HTTP_POST && r->headers_in.content_length_n == -1) {
|
|
54
|
1217 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1218 "client sent POST method without \"Content-Length\" header");
|
|
|
1219 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1220 return NGX_ERROR;
|
|
0
|
1221 }
|
|
|
1222
|
|
|
1223 if (r->plain_http) {
|
|
54
|
1224 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1225 "client sent plain HTTP request to HTTPS port");
|
|
|
1226 ngx_http_finalize_request(r, NGX_HTTP_TO_HTTPS);
|
|
|
1227 return NGX_ERROR;
|
|
0
|
1228 }
|
|
|
1229
|
|
|
1230 if (r->headers_in.connection) {
|
|
|
1231 if (r->headers_in.connection->value.len == 5
|
|
|
1232 && ngx_strcasecmp(r->headers_in.connection->value.data, "close")
|
|
58
|
1233 == 0)
|
|
0
|
1234 {
|
|
|
1235 r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
|
|
|
1236
|
|
|
1237 } else if (r->headers_in.connection->value.len == 10
|
|
|
1238 && ngx_strcasecmp(r->headers_in.connection->value.data,
|
|
58
|
1239 "keep-alive") == 0)
|
|
0
|
1240 {
|
|
|
1241 r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE;
|
|
|
1242
|
|
|
1243 if (r->headers_in.keep_alive) {
|
|
|
1244 r->headers_in.keep_alive_n =
|
|
50
|
1245 ngx_atotm(r->headers_in.keep_alive->value.data,
|
|
0
|
1246 r->headers_in.keep_alive->value.len);
|
|
|
1247 }
|
|
|
1248 }
|
|
|
1249 }
|
|
|
1250
|
|
|
1251 if (r->headers_in.user_agent) {
|
|
|
1252
|
|
|
1253 /*
|
|
|
1254 * check some widespread browsers while the headers are still
|
|
|
1255 * in CPU cache
|
|
|
1256 */
|
|
|
1257
|
|
|
1258 user_agent = r->headers_in.user_agent->value.data;
|
|
|
1259
|
|
|
1260 ua = (u_char *) ngx_strstr(user_agent, "MSIE");
|
|
|
1261
|
|
|
1262 if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
|
|
|
1263
|
|
|
1264 r->headers_in.msie = 1;
|
|
|
1265
|
|
|
1266 if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
|
|
|
1267 r->headers_in.msie4 = 1;
|
|
|
1268 }
|
|
|
1269
|
|
|
1270 #if 0
|
|
|
1271 /* MSIE ignores the SSL "close notify" alert */
|
|
22
|
1272 if (c->ssl) {
|
|
|
1273 r->connection->ssl->no_send_shut = 1;
|
|
|
1274 }
|
|
0
|
1275 #endif
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 if (ngx_strstr(user_agent, "Opera")) {
|
|
|
1279 r->headers_in.opera = 1;
|
|
|
1280 r->headers_in.msie = 0;
|
|
|
1281 r->headers_in.msie4 = 0;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 if (!r->headers_in.msie && !r->headers_in.opera) {
|
|
|
1285
|
|
|
1286 if (ngx_strstr(user_agent, "Gecko/")) {
|
|
|
1287 r->headers_in.gecko = 1;
|
|
|
1288
|
|
|
1289 } else if (ngx_strstr(user_agent, "Konqueror")) {
|
|
|
1290 r->headers_in.konqueror = 1;
|
|
|
1291 }
|
|
|
1292 }
|
|
|
1293 }
|
|
|
1294
|
|
|
1295 return NGX_OK;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298
|
|
50
|
1299 static ngx_int_t
|
|
|
1300 ngx_http_find_virtual_server(ngx_http_request_t *r)
|
|
26
|
1301 {
|
|
|
1302 ngx_int_t rc;
|
|
58
|
1303 ngx_uint_t i, n, key;
|
|
26
|
1304 ngx_http_server_name_t *name;
|
|
56
|
1305 ngx_http_core_loc_conf_t *clcf;
|
|
26
|
1306 ngx_http_core_srv_conf_t *cscf;
|
|
56
|
1307 ngx_http_core_main_conf_t *cmcf;
|
|
26
|
1308
|
|
|
1309 if (r->virtual_names->hash) {
|
|
|
1310 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
1311
|
|
|
1312 ngx_http_server_names_hash_key(key,
|
|
|
1313 r->headers_in.host->value.data,
|
|
|
1314 r->headers_in.host_name_len,
|
|
|
1315 cmcf->server_names_hash);
|
|
|
1316
|
|
|
1317 name = r->virtual_names->hash[key].elts;
|
|
|
1318 n = r->virtual_names->hash[key].nelts;
|
|
|
1319
|
|
|
1320 } else {
|
|
|
1321 name = r->virtual_names->names.elts;
|
|
|
1322 n = r->virtual_names->names.nelts;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 for (i = 0; i < n; i++) {
|
|
|
1326
|
|
|
1327 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1328 "server name: %V", &name[i].name);
|
|
|
1329
|
|
|
1330 if (r->headers_in.host_name_len != name[i].name.len) {
|
|
|
1331 continue;
|
|
|
1332 }
|
|
|
1333
|
|
|
1334 rc = ngx_strncmp(r->headers_in.host->value.data,
|
|
|
1335 name[i].name.data, name[i].name.len);
|
|
|
1336
|
|
|
1337 if (rc == 0) {
|
|
|
1338 r->server_name = name[i].name;
|
|
58
|
1339 goto found;
|
|
26
|
1340 }
|
|
|
1341
|
|
|
1342 if (rc < 0) {
|
|
|
1343 /* the server names are lexicographically sorted */
|
|
|
1344 break;
|
|
|
1345 }
|
|
|
1346 }
|
|
|
1347
|
|
58
|
1348 if (r->virtual_names->wildcards.nelts) {
|
|
26
|
1349
|
|
|
1350 name = r->virtual_names->wildcards.elts;
|
|
|
1351 for (i = 0; i < r->virtual_names->wildcards.nelts; i++) {
|
|
|
1352
|
|
|
1353 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1354 "server name: %V", &name[i].name);
|
|
|
1355
|
|
|
1356 if (r->headers_in.host_name_len <= name[i].name.len) {
|
|
|
1357 continue;
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1361 "server name: %s",
|
|
|
1362 r->headers_in.host->value.data
|
|
|
1363 + (r->headers_in.host_name_len - name[i].name.len));
|
|
|
1364
|
|
|
1365 if (ngx_strncmp(r->headers_in.host->value.data
|
|
|
1366 + (r->headers_in.host_name_len - name[i].name.len),
|
|
|
1367 name[i].name.data, name[i].name.len) == 0)
|
|
|
1368 {
|
|
|
1369 r->server_name.len = r->headers_in.host_name_len;
|
|
|
1370 r->server_name.data = r->headers_in.host->value.data;
|
|
|
1371
|
|
58
|
1372 goto found;
|
|
26
|
1373 }
|
|
|
1374 }
|
|
|
1375 }
|
|
|
1376
|
|
58
|
1377 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1378
|
|
|
1379 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_OFF) {
|
|
26
|
1380 return NGX_OK;
|
|
|
1381 }
|
|
|
1382
|
|
58
|
1383 return NGX_ERROR;
|
|
|
1384
|
|
|
1385 found:
|
|
|
1386
|
|
|
1387 r->srv_conf = name[i].core_srv_conf->ctx->srv_conf;
|
|
|
1388 r->loc_conf = name[i].core_srv_conf->ctx->loc_conf;
|
|
|
1389
|
|
|
1390 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1391 r->connection->log->file = clcf->err_log->file;
|
|
|
1392
|
|
|
1393 if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
|
1394 r->connection->log->log_level = clcf->err_log->log_level;
|
|
26
|
1395 }
|
|
|
1396
|
|
|
1397 return NGX_OK;
|
|
|
1398 }
|
|
|
1399
|
|
|
1400
|
|
58
|
1401 static void
|
|
|
1402 ngx_http_request_handler(ngx_event_t *ev)
|
|
|
1403 {
|
|
|
1404 ngx_connection_t *c;
|
|
|
1405 ngx_http_request_t *r;
|
|
|
1406
|
|
|
1407 c = ev->data;
|
|
|
1408 r = c->data;
|
|
|
1409
|
|
|
1410 if (ev->write) {
|
|
|
1411 r->write_event_handler(r);
|
|
|
1412
|
|
|
1413 } else {
|
|
|
1414 r->read_event_handler(r);
|
|
|
1415 }
|
|
|
1416 }
|
|
|
1417
|
|
|
1418
|
|
50
|
1419 void
|
|
58
|
1420 ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
0
|
1421 {
|
|
58
|
1422 ngx_http_request_t *pr;
|
|
0
|
1423 ngx_http_core_loc_conf_t *clcf;
|
|
|
1424
|
|
58
|
1425 if (rc == NGX_DONE) {
|
|
|
1426 /* r may be already destroyed when rc == NGX_DONE */
|
|
|
1427 return;
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1431 "http finalize request: %d, \"%V\"", rc, &r->uri);
|
|
|
1432
|
|
60
|
1433 if (r->parent
|
|
|
1434 && (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT))
|
|
|
1435 {
|
|
58
|
1436 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
0
|
1437 return;
|
|
|
1438 }
|
|
|
1439
|
|
58
|
1440 if (r->parent || rc == NGX_AGAIN) {
|
|
74
|
1441 if (ngx_http_set_write_handler(r) != NGX_OK) {
|
|
|
1442 return;
|
|
|
1443 }
|
|
58
|
1444 }
|
|
|
1445
|
|
|
1446 r->done = 1;
|
|
|
1447
|
|
|
1448 if (r != r->connection->data) {
|
|
76
|
1449 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1450 "http finalize non-active request: \"%V\"", &r->uri);
|
|
58
|
1451 return;
|
|
|
1452 }
|
|
|
1453
|
|
|
1454 if (r->parent) {
|
|
|
1455
|
|
|
1456 pr = r->parent;
|
|
|
1457
|
|
76
|
1458 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1459 "http parent request: \"%V\"", &pr->uri);
|
|
|
1460
|
|
58
|
1461 if (rc != NGX_AGAIN) {
|
|
|
1462 pr->connection->data = pr;
|
|
|
1463 }
|
|
|
1464
|
|
|
1465 if (pr->postponed) {
|
|
|
1466
|
|
76
|
1467 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1468 "http request: \"%V\" has postponed", &pr->uri);
|
|
|
1469
|
|
58
|
1470 if (rc != NGX_AGAIN && pr->postponed->request == r) {
|
|
|
1471 pr->postponed = pr->postponed->next;
|
|
|
1472
|
|
|
1473 if (pr->postponed == NULL) {
|
|
|
1474 return;
|
|
|
1475 }
|
|
|
1476 }
|
|
|
1477
|
|
76
|
1478 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1479 "http request: \"%V\" still has postponed",
|
|
|
1480 &pr->uri);
|
|
|
1481
|
|
58
|
1482 if (pr->done) {
|
|
|
1483 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1484 "http wake parent request: \"%V\"", &pr->uri);
|
|
58
|
1485
|
|
|
1486 pr->write_event_handler(pr);
|
|
|
1487 }
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 return;
|
|
|
1491 }
|
|
0
|
1492
|
|
60
|
1493 if (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT) {
|
|
0
|
1494
|
|
|
1495 if (r->connection->read->timer_set) {
|
|
|
1496 ngx_del_timer(r->connection->read);
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 if (r->connection->write->timer_set) {
|
|
|
1500 ngx_del_timer(r->connection->write);
|
|
|
1501 }
|
|
|
1502
|
|
76
|
1503 if (r->connection->closed) {
|
|
0
|
1504 ngx_http_close_request(r, 0);
|
|
|
1505 ngx_http_close_connection(r->connection);
|
|
|
1506 return;
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
|
1510
|
|
|
1511 return;
|
|
76
|
1512 }
|
|
|
1513
|
|
|
1514 if (rc == NGX_ERROR || r->connection->closed) {
|
|
0
|
1515 ngx_http_close_request(r, 0);
|
|
|
1516 ngx_http_close_connection(r->connection);
|
|
|
1517 return;
|
|
76
|
1518 }
|
|
|
1519
|
|
|
1520 if (rc == NGX_AGAIN || r->out) {
|
|
74
|
1521 (void) ngx_http_set_write_handler(r);
|
|
0
|
1522 return;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 if (r->connection->read->timer_set) {
|
|
|
1526 ngx_del_timer(r->connection->read);
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 if (r->connection->write->timer_set) {
|
|
|
1530 r->connection->write->delayed = 0;
|
|
|
1531 ngx_del_timer(r->connection->write);
|
|
|
1532 }
|
|
|
1533
|
|
|
1534 if (r->connection->read->pending_eof) {
|
|
22
|
1535 #if (NGX_HAVE_KQUEUE)
|
|
0
|
1536 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log,
|
|
|
1537 r->connection->read->kq_errno,
|
|
|
1538 "kevent() reported about an closed connection");
|
|
|
1539 #endif
|
|
|
1540 ngx_http_close_request(r, 0);
|
|
|
1541 ngx_http_close_connection(r->connection);
|
|
|
1542 return;
|
|
|
1543 }
|
|
|
1544
|
|
|
1545 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1546
|
|
|
1547 if (!ngx_terminate
|
|
|
1548 && !ngx_exiting
|
|
|
1549 && r->keepalive != 0
|
|
|
1550 && clcf->keepalive_timeout > 0)
|
|
|
1551 {
|
|
|
1552 ngx_http_set_keepalive(r);
|
|
|
1553 return;
|
|
|
1554
|
|
|
1555 } else if (r->lingering_close && clcf->lingering_timeout > 0) {
|
|
|
1556 ngx_http_set_lingering_close(r);
|
|
|
1557 return;
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 ngx_http_close_request(r, 0);
|
|
|
1561 ngx_http_close_connection(r->connection);
|
|
|
1562 }
|
|
|
1563
|
|
|
1564
|
|
74
|
1565 static ngx_int_t
|
|
50
|
1566 ngx_http_set_write_handler(ngx_http_request_t *r)
|
|
0
|
1567 {
|
|
|
1568 ngx_event_t *wev;
|
|
|
1569 ngx_http_core_loc_conf_t *clcf;
|
|
|
1570
|
|
58
|
1571 r->http_state = NGX_HTTP_WRITING_REQUEST_STATE;
|
|
|
1572
|
|
74
|
1573 r->write_event_handler = ngx_http_writer;
|
|
|
1574
|
|
76
|
1575 if (r->connection->closed) {
|
|
|
1576 return NGX_OK;
|
|
|
1577 }
|
|
|
1578
|
|
0
|
1579 wev = r->connection->write;
|
|
|
1580
|
|
|
1581 if (wev->ready && wev->delayed) {
|
|
74
|
1582 return NGX_OK;
|
|
0
|
1583 }
|
|
|
1584
|
|
58
|
1585 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
0
|
1586 if (!wev->delayed) {
|
|
|
1587 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1588 }
|
|
|
1589
|
|
2
|
1590 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1591 ngx_http_close_request(r, 0);
|
|
|
1592 ngx_http_close_connection(r->connection);
|
|
74
|
1593 return NGX_ERROR;
|
|
0
|
1594 }
|
|
74
|
1595
|
|
|
1596 return NGX_OK;
|
|
0
|
1597 }
|
|
|
1598
|
|
|
1599
|
|
58
|
1600 static void
|
|
|
1601 ngx_http_writer(ngx_http_request_t *r)
|
|
0
|
1602 {
|
|
|
1603 int rc;
|
|
58
|
1604 ngx_event_t *wev;
|
|
0
|
1605 ngx_connection_t *c;
|
|
|
1606 ngx_http_core_loc_conf_t *clcf;
|
|
|
1607
|
|
58
|
1608 c = r->connection;
|
|
|
1609 wev = c->write;
|
|
|
1610
|
|
|
1611 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1612 "http writer handler: \"%V\"", &r->uri);
|
|
0
|
1613
|
|
|
1614 if (wev->timedout) {
|
|
|
1615 if (!wev->delayed) {
|
|
54
|
1616 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
1617 "client timed out");
|
|
|
1618 c->timedout = 1;
|
|
|
1619 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
1620 ngx_http_close_connection(c);
|
|
0
|
1621 return;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624 wev->timedout = 0;
|
|
|
1625 wev->delayed = 0;
|
|
|
1626
|
|
|
1627 if (!wev->ready) {
|
|
|
1628 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1629 ngx_http_core_module);
|
|
|
1630 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1631
|
|
2
|
1632 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1633 ngx_http_close_request(r, 0);
|
|
|
1634 ngx_http_close_connection(r->connection);
|
|
|
1635 }
|
|
|
1636
|
|
|
1637 return;
|
|
|
1638 }
|
|
|
1639
|
|
|
1640 } else {
|
|
|
1641 if (wev->delayed) {
|
|
|
1642 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1643 "http writer delayed");
|
|
|
1644
|
|
|
1645 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1646 ngx_http_core_module);
|
|
2
|
1647
|
|
|
1648 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1649 ngx_http_close_request(r, 0);
|
|
|
1650 ngx_http_close_connection(r->connection);
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 return;
|
|
|
1654 }
|
|
|
1655 }
|
|
|
1656
|
|
58
|
1657 if (r->postponed) {
|
|
|
1658 rc = ngx_http_postponed_handler(r);
|
|
|
1659
|
|
|
1660 if (rc == NGX_DONE) {
|
|
|
1661 /* r may be already destroyed when rc == NGX_DONE */
|
|
|
1662 return;
|
|
|
1663 }
|
|
|
1664
|
|
|
1665 } else {
|
|
|
1666 rc = ngx_http_output_filter(r, NULL);
|
|
|
1667
|
|
|
1668 }
|
|
|
1669
|
|
|
1670 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1671 "http writer output filter: %d, \"%V\"", rc, &r->uri);
|
|
0
|
1672
|
|
|
1673 if (rc == NGX_AGAIN) {
|
|
|
1674 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
|
1675 ngx_http_core_module);
|
|
|
1676 if (!wev->ready && !wev->delayed) {
|
|
|
1677 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1678 }
|
|
|
1679
|
|
2
|
1680 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1681 ngx_http_close_request(r, 0);
|
|
|
1682 ngx_http_close_connection(r->connection);
|
|
|
1683 }
|
|
|
1684
|
|
|
1685 return;
|
|
|
1686 }
|
|
|
1687
|
|
58
|
1688 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1689 "http writer done: \"%V\"", &r->uri);
|
|
0
|
1690
|
|
|
1691 ngx_http_finalize_request(r, rc);
|
|
|
1692 }
|
|
|
1693
|
|
|
1694
|
|
58
|
1695 static ngx_int_t
|
|
|
1696 ngx_http_postponed_handler(ngx_http_request_t *r)
|
|
|
1697 {
|
|
|
1698 ngx_int_t rc;
|
|
|
1699 ngx_http_postponed_request_t *pr;
|
|
|
1700
|
|
|
1701 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1702 "http postpone handler \"%V\"", &r->uri);
|
|
|
1703
|
|
|
1704 pr = r->postponed;
|
|
|
1705
|
|
|
1706 if (pr->request == NULL) {
|
|
|
1707 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1708 "http postponed data \"%V\" %p", &r->uri, pr->out);
|
|
|
1709
|
|
|
1710 rc = ngx_http_output_filter(r, NULL);
|
|
|
1711
|
|
|
1712 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1713 "http postponed output filter: %d", rc);
|
|
58
|
1714
|
|
|
1715 if (rc == NGX_AGAIN) {
|
|
|
1716 return rc;
|
|
|
1717 }
|
|
|
1718
|
|
76
|
1719 /*
|
|
|
1720 * we treat NGX_ERROR as NGX_OK, because we need to complete
|
|
|
1721 * all postponed requests
|
|
|
1722 */
|
|
58
|
1723
|
|
|
1724 pr = r->postponed;
|
|
|
1725
|
|
|
1726 if (pr == NULL) {
|
|
|
1727 return NGX_OK;
|
|
|
1728 }
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 r = pr->request;
|
|
|
1732 r->connection->data = r;
|
|
|
1733
|
|
|
1734 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1735 "http wake child request \"%V\"", &r->uri);
|
|
58
|
1736
|
|
|
1737 r->write_event_handler(r);
|
|
|
1738
|
|
|
1739 return NGX_DONE;
|
|
|
1740 }
|
|
|
1741
|
|
|
1742
|
|
50
|
1743 static void
|
|
58
|
1744 ngx_http_block_read(ngx_http_request_t *r)
|
|
0
|
1745 {
|
|
58
|
1746 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1747 "http read blocked");
|
|
0
|
1748
|
|
|
1749 /* aio does not call this handler */
|
|
|
1750
|
|
58
|
1751 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT)
|
|
|
1752 && r->connection->read->active)
|
|
|
1753 {
|
|
|
1754 if (ngx_del_event(r->connection->read, NGX_READ_EVENT, 0)
|
|
|
1755 == NGX_ERROR)
|
|
|
1756 {
|
|
0
|
1757 ngx_http_close_request(r, 0);
|
|
58
|
1758 ngx_http_close_connection(r->connection);
|
|
0
|
1759 }
|
|
|
1760 }
|
|
|
1761 }
|
|
|
1762
|
|
|
1763
|
|
50
|
1764 ngx_int_t
|
|
|
1765 ngx_http_discard_body(ngx_http_request_t *r)
|
|
0
|
1766 {
|
|
|
1767 ssize_t size;
|
|
|
1768 ngx_event_t *rev;
|
|
|
1769
|
|
70
|
1770 if (r->main) {
|
|
|
1771 return NGX_OK;
|
|
|
1772 }
|
|
|
1773
|
|
0
|
1774 rev = r->connection->read;
|
|
|
1775
|
|
|
1776 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body");
|
|
|
1777
|
|
|
1778 if (rev->timer_set) {
|
|
|
1779 ngx_del_timer(rev);
|
|
|
1780 }
|
|
|
1781
|
|
|
1782 if (r->headers_in.content_length_n <= 0) {
|
|
|
1783 return NGX_OK;
|
|
|
1784 }
|
|
|
1785
|
|
|
1786 size = r->header_in->last - r->header_in->pos;
|
|
|
1787
|
|
|
1788 if (size) {
|
|
|
1789 if (r->headers_in.content_length_n > size) {
|
|
|
1790 r->headers_in.content_length_n -= size;
|
|
|
1791
|
|
|
1792 } else {
|
|
|
1793 r->header_in->pos += r->headers_in.content_length_n;
|
|
|
1794 r->headers_in.content_length_n = 0;
|
|
|
1795 return NGX_OK;
|
|
|
1796 }
|
|
|
1797 }
|
|
|
1798
|
|
58
|
1799 r->read_event_handler = ngx_http_read_discarded_body_handler;
|
|
|
1800
|
|
|
1801 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
1802 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 return ngx_http_read_discarded_body(r);
|
|
|
1806 }
|
|
|
1807
|
|
|
1808
|
|
50
|
1809 static void
|
|
58
|
1810 ngx_http_read_discarded_body_handler(ngx_http_request_t *r)
|
|
0
|
1811 {
|
|
58
|
1812 ngx_int_t rc;
|
|
0
|
1813
|
|
|
1814 rc = ngx_http_read_discarded_body(r);
|
|
|
1815
|
|
|
1816 if (rc == NGX_AGAIN) {
|
|
58
|
1817 if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) {
|
|
0
|
1818 ngx_http_close_request(r, rc);
|
|
58
|
1819 ngx_http_close_connection(r->connection);
|
|
0
|
1820 return;
|
|
|
1821 }
|
|
|
1822 }
|
|
|
1823
|
|
|
1824 if (rc != NGX_OK) {
|
|
|
1825 ngx_http_close_request(r, rc);
|
|
58
|
1826 ngx_http_close_connection(r->connection);
|
|
0
|
1827 }
|
|
|
1828 }
|
|
|
1829
|
|
|
1830
|
|
50
|
1831 static ngx_int_t
|
|
|
1832 ngx_http_read_discarded_body(ngx_http_request_t *r)
|
|
0
|
1833 {
|
|
|
1834 ssize_t size, n;
|
|
|
1835 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE];
|
|
|
1836
|
|
|
1837 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1838 "http read discarded body");
|
|
|
1839
|
|
|
1840 if (r->headers_in.content_length_n == 0) {
|
|
|
1841 return NGX_OK;
|
|
|
1842 }
|
|
|
1843
|
|
|
1844
|
|
|
1845 size = r->headers_in.content_length_n;
|
|
|
1846
|
|
|
1847 if (size > NGX_HTTP_DISCARD_BUFFER_SIZE) {
|
|
|
1848 size = NGX_HTTP_DISCARD_BUFFER_SIZE;
|
|
|
1849 }
|
|
|
1850
|
|
|
1851 n = r->connection->recv(r->connection, buffer, size);
|
|
|
1852
|
|
|
1853 if (n == NGX_ERROR) {
|
|
|
1854
|
|
76
|
1855 r->connection->closed = 1;
|
|
0
|
1856
|
|
|
1857 /*
|
|
|
1858 * if a client request body is discarded then we already set
|
|
|
1859 * some HTTP response code for client and we can ignore the error
|
|
|
1860 */
|
|
|
1861
|
|
|
1862 return NGX_OK;
|
|
|
1863 }
|
|
|
1864
|
|
|
1865 if (n == NGX_AGAIN) {
|
|
|
1866 return NGX_AGAIN;
|
|
|
1867 }
|
|
|
1868
|
|
|
1869 r->headers_in.content_length_n -= n;
|
|
|
1870
|
|
|
1871 return NGX_OK;
|
|
|
1872 }
|
|
|
1873
|
|
|
1874
|
|
50
|
1875 static void
|
|
|
1876 ngx_http_set_keepalive(ngx_http_request_t *r)
|
|
0
|
1877 {
|
|
2
|
1878 int tcp_nodelay;
|
|
0
|
1879 ngx_int_t i;
|
|
|
1880 ngx_buf_t *b, *f;
|
|
|
1881 ngx_event_t *rev, *wev;
|
|
|
1882 ngx_connection_t *c;
|
|
|
1883 ngx_http_connection_t *hc;
|
|
|
1884 ngx_http_core_srv_conf_t *cscf;
|
|
|
1885 ngx_http_core_loc_conf_t *clcf;
|
|
|
1886
|
|
|
1887 c = r->connection;
|
|
|
1888 rev = c->read;
|
|
|
1889
|
|
|
1890 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "set http keepalive handler");
|
|
|
1891
|
|
32
|
1892 c->log->action = "closing request";
|
|
0
|
1893
|
|
|
1894 hc = r->http_connection;
|
|
|
1895 b = r->header_in;
|
|
|
1896
|
|
|
1897 if (b->pos < b->last) {
|
|
|
1898
|
|
|
1899 /* the pipelined request */
|
|
|
1900
|
|
|
1901 if (b != c->buffer) {
|
|
|
1902
|
|
4
|
1903 /*
|
|
|
1904 * If the large header buffers were allocated while the previous
|
|
|
1905 * request processing then we do not use c->buffer for
|
|
|
1906 * the pipelined request (see ngx_http_init_request()).
|
|
|
1907 *
|
|
|
1908 * Now we would move the large header buffers to the free list.
|
|
|
1909 */
|
|
0
|
1910
|
|
|
1911 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1912
|
|
|
1913 if (hc->free == NULL) {
|
|
|
1914 hc->free = ngx_palloc(c->pool,
|
|
|
1915 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
1916
|
|
|
1917 if (hc->free == NULL) {
|
|
26
|
1918 ngx_http_close_request(r, 0);
|
|
0
|
1919 ngx_http_close_connection(c);
|
|
|
1920 return;
|
|
|
1921 }
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 for (i = 0; i < hc->nbusy - 1; i++) {
|
|
|
1925 f = hc->busy[i];
|
|
|
1926 hc->free[hc->nfree++] = f;
|
|
|
1927 f->pos = f->start;
|
|
|
1928 f->last = f->start;
|
|
|
1929 }
|
|
|
1930
|
|
|
1931 hc->busy[0] = b;
|
|
|
1932 hc->nbusy = 1;
|
|
|
1933 }
|
|
|
1934 }
|
|
|
1935
|
|
26
|
1936 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1937
|
|
0
|
1938 ngx_http_close_request(r, 0);
|
|
|
1939 c->data = hc;
|
|
|
1940
|
|
|
1941 ngx_add_timer(rev, clcf->keepalive_timeout);
|
|
|
1942
|
|
58
|
1943 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
1944 ngx_http_close_connection(c);
|
|
|
1945 return;
|
|
|
1946 }
|
|
|
1947
|
|
|
1948 wev = c->write;
|
|
58
|
1949 wev->handler = ngx_http_empty_handler;
|
|
0
|
1950
|
|
|
1951 if (b->pos < b->last) {
|
|
|
1952
|
|
|
1953 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "pipelined request");
|
|
|
1954
|
|
|
1955 hc->pipeline = 1;
|
|
32
|
1956 c->log->action = "reading client pipelined request line";
|
|
0
|
1957 ngx_http_init_request(rev);
|
|
|
1958 return;
|
|
|
1959 }
|
|
|
1960
|
|
|
1961 hc->pipeline = 0;
|
|
|
1962
|
|
4
|
1963 /*
|
|
|
1964 * To keep a memory footprint as small as possible for an idle
|
|
|
1965 * keepalive connection we try to free the ngx_http_request_t and
|
|
|
1966 * c->buffer's memory if they were allocated outside the c->pool.
|
|
|
1967 * The large header buffers are always allocated outside the c->pool and
|
|
|
1968 * are freed too.
|
|
|
1969 */
|
|
|
1970
|
|
0
|
1971 if (ngx_pfree(c->pool, r) == NGX_OK) {
|
|
|
1972 hc->request = NULL;
|
|
|
1973 }
|
|
|
1974
|
|
|
1975 b = c->buffer;
|
|
|
1976
|
|
|
1977 if (ngx_pfree(c->pool, b->start) == NGX_OK) {
|
|
4
|
1978
|
|
|
1979 /*
|
|
|
1980 * the special note for ngx_http_keepalive_handler() that
|
|
|
1981 * c->buffer's memory was freed
|
|
|
1982 */
|
|
|
1983
|
|
0
|
1984 b->pos = NULL;
|
|
|
1985
|
|
|
1986 } else {
|
|
|
1987 b->pos = b->start;
|
|
|
1988 b->last = b->start;
|
|
|
1989 }
|
|
|
1990
|
|
10
|
1991 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc free: %p %d",
|
|
0
|
1992 hc->free, hc->nfree);
|
|
|
1993
|
|
|
1994 if (hc->free) {
|
|
|
1995 for (i = 0; i < hc->nfree; i++) {
|
|
|
1996 ngx_pfree(c->pool, hc->free[i]);
|
|
|
1997 hc->free[i] = NULL;
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 hc->nfree = 0;
|
|
|
2001 }
|
|
|
2002
|
|
10
|
2003 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc busy: %p %d",
|
|
0
|
2004 hc->busy, hc->nbusy);
|
|
|
2005
|
|
|
2006 if (hc->busy) {
|
|
|
2007 for (i = 0; i < hc->nbusy; i++) {
|
|
|
2008 ngx_pfree(c->pool, hc->busy[i]);
|
|
|
2009 hc->busy[i] = NULL;
|
|
|
2010 }
|
|
|
2011
|
|
|
2012 hc->nbusy = 0;
|
|
|
2013 }
|
|
|
2014
|
|
58
|
2015 rev->handler = ngx_http_keepalive_handler;
|
|
0
|
2016
|
|
|
2017 if (wev->active) {
|
|
4
|
2018 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2019 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
2020 == NGX_ERROR)
|
|
|
2021 {
|
|
|
2022 ngx_http_close_connection(c);
|
|
|
2023 return;
|
|
|
2024 }
|
|
|
2025
|
|
|
2026 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
2027 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
2028 ngx_http_close_connection(c);
|
|
|
2029 return;
|
|
|
2030 }
|
|
|
2031 }
|
|
|
2032 }
|
|
|
2033
|
|
32
|
2034 c->log->action = "keepalive";
|
|
0
|
2035
|
|
|
2036 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
50
|
2037 if (ngx_tcp_push(c->fd) == -1) {
|
|
0
|
2038 ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed");
|
|
|
2039 ngx_http_close_connection(c);
|
|
|
2040 return;
|
|
|
2041 }
|
|
2
|
2042
|
|
0
|
2043 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
22
|
2044 tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0;
|
|
2
|
2045
|
|
|
2046 } else {
|
|
22
|
2047 tcp_nodelay = 1;
|
|
|
2048 }
|
|
|
2049
|
|
32
|
2050 if (tcp_nodelay
|
|
|
2051 && clcf->tcp_nodelay
|
|
|
2052 && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET)
|
|
|
2053 {
|
|
22
|
2054 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
2055
|
|
|
2056 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
2057 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
2058 {
|
|
|
2059 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2060 "setsockopt(TCP_NODELAY) failed");
|
|
|
2061 ngx_http_close_connection(c);
|
|
|
2062 return;
|
|
2
|
2063 }
|
|
22
|
2064
|
|
32
|
2065 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
0
|
2066 }
|
|
|
2067
|
|
|
2068 #if 0
|
|
4
|
2069 /* if ngx_http_request_t was freed then we need some other place */
|
|
0
|
2070 r->http_state = NGX_HTTP_KEEPALIVE_STATE;
|
|
|
2071 #endif
|
|
|
2072
|
|
|
2073 if (rev->ready) {
|
|
|
2074 ngx_http_keepalive_handler(rev);
|
|
|
2075 }
|
|
|
2076 }
|
|
|
2077
|
|
|
2078
|
|
50
|
2079 static void
|
|
|
2080 ngx_http_keepalive_handler(ngx_event_t *rev)
|
|
0
|
2081 {
|
|
50
|
2082 size_t size;
|
|
|
2083 ssize_t n;
|
|
|
2084 ngx_buf_t *b;
|
|
|
2085 ngx_connection_t *c;
|
|
0
|
2086
|
|
|
2087 c = rev->data;
|
|
|
2088
|
|
|
2089 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http keepalive handler");
|
|
|
2090
|
|
|
2091 if (rev->timedout) {
|
|
|
2092 ngx_http_close_connection(c);
|
|
|
2093 return;
|
|
|
2094 }
|
|
|
2095
|
|
18
|
2096 #if (NGX_HAVE_KQUEUE)
|
|
0
|
2097
|
|
4
|
2098 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2099 if (rev->pending_eof) {
|
|
32
|
2100 c->log->handler = NULL;
|
|
0
|
2101 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
|
|
10
|
2102 "kevent() reported that client %V closed "
|
|
32
|
2103 "keepalive connection", &c->addr_text);
|
|
22
|
2104 #if (NGX_HTTP_SSL)
|
|
|
2105 if (c->ssl) {
|
|
|
2106 c->ssl->no_send_shut = 1;
|
|
|
2107 }
|
|
|
2108 #endif
|
|
0
|
2109 ngx_http_close_connection(c);
|
|
|
2110 return;
|
|
|
2111 }
|
|
|
2112 }
|
|
|
2113
|
|
|
2114 #endif
|
|
|
2115
|
|
|
2116 b = c->buffer;
|
|
|
2117 size = b->end - b->start;
|
|
|
2118
|
|
|
2119 if (b->pos == NULL) {
|
|
4
|
2120
|
|
|
2121 /*
|
|
|
2122 * The c->buffer's memory was freed by ngx_http_set_keepalive().
|
|
|
2123 * However, the c->buffer->start and c->buffer->end were not changed
|
|
|
2124 * to keep the buffer size.
|
|
|
2125 */
|
|
|
2126
|
|
50
|
2127 b->pos = ngx_palloc(c->pool, size);
|
|
|
2128 if (b->pos == NULL) {
|
|
0
|
2129 ngx_http_close_connection(c);
|
|
|
2130 return;
|
|
|
2131 }
|
|
|
2132
|
|
|
2133 b->start = b->pos;
|
|
|
2134 b->last = b->pos;
|
|
|
2135 b->end = b->pos + size;
|
|
|
2136 }
|
|
|
2137
|
|
|
2138 /*
|
|
|
2139 * MSIE closes a keepalive connection with RST flag
|
|
|
2140 * so we ignore ECONNRESET here.
|
|
|
2141 */
|
|
|
2142
|
|
|
2143 c->log_error = NGX_ERROR_IGNORE_ECONNRESET;
|
|
|
2144 ngx_set_socket_errno(0);
|
|
|
2145
|
|
|
2146 n = c->recv(c, b->last, size);
|
|
|
2147 c->log_error = NGX_ERROR_INFO;
|
|
|
2148
|
|
|
2149 if (n == NGX_AGAIN) {
|
|
58
|
2150 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
24
|
2151 ngx_http_close_connection(c);
|
|
|
2152 }
|
|
|
2153
|
|
0
|
2154 return;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 if (n == NGX_ERROR) {
|
|
|
2158 ngx_http_close_connection(c);
|
|
|
2159 return;
|
|
|
2160 }
|
|
|
2161
|
|
32
|
2162 c->log->handler = NULL;
|
|
0
|
2163
|
|
|
2164 if (n == 0) {
|
|
|
2165 ngx_log_error(NGX_LOG_INFO, c->log, ngx_socket_errno,
|
|
32
|
2166 "client %V closed keepalive connection", &c->addr_text);
|
|
0
|
2167 ngx_http_close_connection(c);
|
|
|
2168 return;
|
|
|
2169 }
|
|
|
2170
|
|
|
2171 b->last += n;
|
|
32
|
2172
|
|
|
2173 c->log->handler = ngx_http_log_error;
|
|
|
2174 c->log->action = "reading client request line";
|
|
0
|
2175
|
|
|
2176 ngx_http_init_request(rev);
|
|
|
2177 }
|
|
|
2178
|
|
|
2179
|
|
50
|
2180 static void
|
|
|
2181 ngx_http_set_lingering_close(ngx_http_request_t *r)
|
|
0
|
2182 {
|
|
|
2183 ngx_event_t *rev, *wev;
|
|
|
2184 ngx_connection_t *c;
|
|
|
2185 ngx_http_core_loc_conf_t *clcf;
|
|
|
2186
|
|
|
2187 c = r->connection;
|
|
|
2188
|
|
|
2189 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2190
|
|
|
2191 rev = c->read;
|
|
58
|
2192 rev->handler = ngx_http_lingering_close_handler;
|
|
0
|
2193
|
|
|
2194 r->lingering_time = ngx_time() + clcf->lingering_time / 1000;
|
|
|
2195 ngx_add_timer(rev, clcf->lingering_timeout);
|
|
|
2196
|
|
58
|
2197 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
2198 ngx_http_close_request(r, 0);
|
|
|
2199 ngx_http_close_connection(c);
|
|
|
2200 return;
|
|
|
2201 }
|
|
|
2202
|
|
|
2203 wev = c->write;
|
|
58
|
2204 wev->handler = ngx_http_empty_handler;
|
|
0
|
2205
|
|
|
2206 if (wev->active) {
|
|
4
|
2207 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2208 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
2209 == NGX_ERROR)
|
|
|
2210 {
|
|
26
|
2211 ngx_http_close_request(r, 0);
|
|
0
|
2212 ngx_http_close_connection(c);
|
|
|
2213 return;
|
|
|
2214 }
|
|
|
2215
|
|
|
2216 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
2217 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
26
|
2218 ngx_http_close_request(r, 0);
|
|
0
|
2219 ngx_http_close_connection(c);
|
|
|
2220 return;
|
|
|
2221 }
|
|
|
2222 }
|
|
|
2223 }
|
|
|
2224
|
|
|
2225 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
2226 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2227 ngx_shutdown_socket_n " failed");
|
|
|
2228 ngx_http_close_request(r, 0);
|
|
|
2229 ngx_http_close_connection(c);
|
|
|
2230 return;
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 if (rev->ready) {
|
|
|
2234 ngx_http_lingering_close_handler(rev);
|
|
|
2235 }
|
|
|
2236 }
|
|
|
2237
|
|
|
2238
|
|
50
|
2239 static void
|
|
|
2240 ngx_http_lingering_close_handler(ngx_event_t *rev)
|
|
0
|
2241 {
|
|
|
2242 ssize_t n;
|
|
|
2243 ngx_msec_t timer;
|
|
|
2244 ngx_connection_t *c;
|
|
|
2245 ngx_http_request_t *r;
|
|
|
2246 ngx_http_core_loc_conf_t *clcf;
|
|
|
2247 u_char buffer[NGX_HTTP_LINGERING_BUFFER_SIZE];
|
|
|
2248
|
|
|
2249 c = rev->data;
|
|
|
2250 r = c->data;
|
|
|
2251
|
|
|
2252 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2253 "http lingering close handler");
|
|
|
2254
|
|
|
2255 if (rev->timedout) {
|
|
|
2256 ngx_http_close_request(r, 0);
|
|
|
2257 ngx_http_close_connection(c);
|
|
|
2258 return;
|
|
|
2259 }
|
|
|
2260
|
|
|
2261 timer = r->lingering_time - ngx_time();
|
|
|
2262 if (timer <= 0) {
|
|
|
2263 ngx_http_close_request(r, 0);
|
|
|
2264 ngx_http_close_connection(c);
|
|
|
2265 return;
|
|
|
2266 }
|
|
|
2267
|
|
|
2268 do {
|
|
|
2269 n = c->recv(c, buffer, NGX_HTTP_LINGERING_BUFFER_SIZE);
|
|
|
2270
|
|
|
2271 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "lingering read: %d", n);
|
|
|
2272
|
|
|
2273 if (n == NGX_ERROR || n == 0) {
|
|
|
2274 ngx_http_close_request(r, 0);
|
|
|
2275 ngx_http_close_connection(c);
|
|
|
2276 return;
|
|
|
2277 }
|
|
|
2278
|
|
|
2279 } while (rev->ready);
|
|
|
2280
|
|
58
|
2281 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
26
|
2282 ngx_http_close_request(r, 0);
|
|
24
|
2283 ngx_http_close_connection(c);
|
|
|
2284 return;
|
|
|
2285 }
|
|
|
2286
|
|
0
|
2287 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2288
|
|
|
2289 timer *= 1000;
|
|
|
2290
|
|
|
2291 if (timer > clcf->lingering_timeout) {
|
|
|
2292 timer = clcf->lingering_timeout;
|
|
|
2293 }
|
|
|
2294
|
|
|
2295 ngx_add_timer(rev, timer);
|
|
|
2296 }
|
|
|
2297
|
|
|
2298
|
|
50
|
2299 void
|
|
|
2300 ngx_http_empty_handler(ngx_event_t *wev)
|
|
0
|
2301 {
|
|
|
2302 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http empty handler");
|
|
|
2303
|
|
|
2304 return;
|
|
|
2305 }
|
|
|
2306
|
|
|
2307
|
|
58
|
2308 void
|
|
|
2309 ngx_http_request_empty_handler(ngx_http_request_t *r)
|
|
|
2310 {
|
|
|
2311 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2312 "http requets empty handler");
|
|
|
2313
|
|
|
2314 return;
|
|
|
2315 }
|
|
|
2316
|
|
|
2317
|
|
50
|
2318 ngx_int_t
|
|
|
2319 ngx_http_send_last(ngx_http_request_t *r)
|
|
0
|
2320 {
|
|
|
2321 ngx_buf_t *b;
|
|
|
2322 ngx_chain_t out;
|
|
|
2323
|
|
50
|
2324 b = ngx_calloc_buf(r->pool);
|
|
|
2325 if (b == NULL) {
|
|
0
|
2326 return NGX_ERROR;
|
|
|
2327 }
|
|
|
2328
|
|
|
2329 b->last_buf = 1;
|
|
|
2330 out.buf = b;
|
|
|
2331 out.next = NULL;
|
|
|
2332
|
|
|
2333 return ngx_http_output_filter(r, &out);
|
|
|
2334 }
|
|
|
2335
|
|
|
2336
|
|
50
|
2337 void
|
|
58
|
2338 ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error)
|
|
0
|
2339 {
|
|
|
2340 ngx_log_t *log;
|
|
58
|
2341 struct linger linger;
|
|
0
|
2342 ngx_http_log_ctx_t *ctx;
|
|
|
2343 ngx_http_core_loc_conf_t *clcf;
|
|
|
2344
|
|
|
2345 log = r->connection->log;
|
|
|
2346
|
|
|
2347 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http close request");
|
|
|
2348
|
|
|
2349 if (r->pool == NULL) {
|
|
80
|
2350 ngx_log_error(NGX_LOG_ALERT, log, 0, "http request already closed");
|
|
0
|
2351 return;
|
|
|
2352 }
|
|
|
2353
|
|
|
2354 #if (NGX_STAT_STUB)
|
|
|
2355 if (r->stat_reading) {
|
|
42
|
2356 ngx_atomic_dec(ngx_stat_reading);
|
|
0
|
2357 }
|
|
|
2358
|
|
|
2359 if (r->stat_writing) {
|
|
42
|
2360 ngx_atomic_dec(ngx_stat_writing);
|
|
0
|
2361 }
|
|
|
2362 #endif
|
|
|
2363
|
|
|
2364 if (error && r->headers_out.status == 0) {
|
|
|
2365 r->headers_out.status = error;
|
|
|
2366 }
|
|
|
2367
|
|
|
2368 ngx_http_log_handler(r);
|
|
|
2369
|
|
|
2370 if (r->connection->timedout) {
|
|
|
2371 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2372
|
|
|
2373 if (clcf->reset_timedout_connection) {
|
|
58
|
2374 linger.l_onoff = 1;
|
|
|
2375 linger.l_linger = 0;
|
|
0
|
2376
|
|
|
2377 if (setsockopt(r->connection->fd, SOL_SOCKET, SO_LINGER,
|
|
58
|
2378 (const void *) &linger, sizeof(struct linger)) == -1)
|
|
0
|
2379 {
|
|
|
2380 ngx_log_error(NGX_LOG_ALERT, log, ngx_socket_errno,
|
|
|
2381 "setsockopt(SO_LINGER) failed");
|
|
|
2382 }
|
|
|
2383 }
|
|
|
2384 }
|
|
|
2385
|
|
58
|
2386 /* the various request strings were allocated from r->pool */
|
|
0
|
2387 ctx = log->data;
|
|
10
|
2388 ctx->request = NULL;
|
|
0
|
2389
|
|
|
2390 r->request_line.len = 0;
|
|
|
2391
|
|
|
2392 ngx_destroy_pool(r->pool);
|
|
|
2393 }
|
|
|
2394
|
|
|
2395
|
|
|
2396 #if (NGX_HTTP_SSL)
|
|
|
2397
|
|
80
|
2398 static void
|
|
|
2399 ngx_http_ssl_close_handler(ngx_event_t *ev)
|
|
0
|
2400 {
|
|
|
2401 ngx_connection_t *c;
|
|
|
2402
|
|
|
2403 c = ev->data;
|
|
|
2404
|
|
|
2405 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "http ssl close handler");
|
|
|
2406
|
|
|
2407 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
2408 return;
|
|
|
2409 }
|
|
|
2410
|
|
|
2411 ngx_http_close_connection(c);
|
|
|
2412 }
|
|
|
2413
|
|
|
2414 #endif
|
|
|
2415
|
|
|
2416
|
|
80
|
2417 static void
|
|
50
|
2418 ngx_http_close_connection(ngx_connection_t *c)
|
|
0
|
2419 {
|
|
28
|
2420 ngx_pool_t *pool;
|
|
|
2421
|
|
0
|
2422 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2423 "close http connection: %d", c->fd);
|
|
|
2424
|
|
2
|
2425 #if (NGX_OPENSSL)
|
|
|
2426
|
|
|
2427 if (c->ssl) {
|
|
|
2428 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
80
|
2429 c->read->handler = ngx_http_ssl_close_handler;
|
|
|
2430 c->write->handler = ngx_http_ssl_close_handler;
|
|
2
|
2431 return;
|
|
|
2432 }
|
|
|
2433 }
|
|
|
2434
|
|
|
2435 #endif
|
|
|
2436
|
|
0
|
2437 #if (NGX_STAT_STUB)
|
|
42
|
2438 ngx_atomic_dec(ngx_stat_active);
|
|
0
|
2439 #endif
|
|
|
2440
|
|
28
|
2441 pool = c->pool;
|
|
|
2442
|
|
0
|
2443 ngx_close_connection(c);
|
|
28
|
2444
|
|
50
|
2445 ngx_destroy_pool(pool);
|
|
0
|
2446 }
|
|
|
2447
|
|
|
2448
|
|
50
|
2449 static u_char *
|
|
|
2450 ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
0
|
2451 {
|
|
32
|
2452 u_char *p;
|
|
54
|
2453 ngx_http_request_t *r;
|
|
32
|
2454 ngx_http_log_ctx_t *ctx;
|
|
10
|
2455
|
|
32
|
2456 if (log->action) {
|
|
58
|
2457 p = ngx_snprintf(buf, len, " while %s", log->action);
|
|
10
|
2458 len -= p - buf;
|
|
54
|
2459 buf = p;
|
|
10
|
2460 }
|
|
|
2461
|
|
58
|
2462 ctx = log->data;
|
|
|
2463
|
|
54
|
2464 p = ngx_snprintf(buf, len, ", client: %V", ctx->client);
|
|
58
|
2465 len -= p - buf;
|
|
54
|
2466
|
|
|
2467 r = ctx->request;
|
|
|
2468
|
|
58
|
2469 if (r) {
|
|
|
2470 return r->log_handler(r, p, len);
|
|
0
|
2471 }
|
|
10
|
2472
|
|
58
|
2473 return p;
|
|
|
2474 }
|
|
|
2475
|
|
|
2476
|
|
|
2477 static u_char *
|
|
|
2478 ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
|
2479 {
|
|
|
2480 u_char *p;
|
|
54
|
2481
|
|
|
2482 if (r->server_name.data) {
|
|
|
2483 p = ngx_snprintf(buf, len, ", server: %V", &r->server_name);
|
|
52
|
2484 len -= p - buf;
|
|
54
|
2485 buf = p;
|
|
52
|
2486 }
|
|
|
2487
|
|
54
|
2488 if (r->unparsed_uri.data) {
|
|
|
2489 p = ngx_snprintf(buf, len, ", URL: \"%V\"", &r->unparsed_uri);
|
|
|
2490 len -= p - buf;
|
|
|
2491 buf = p;
|
|
|
2492
|
|
|
2493 } else {
|
|
|
2494 if (r->request_line.data == NULL && r->request_start) {
|
|
|
2495 for (p = r->request_start; p < r->header_in->last; p++) {
|
|
|
2496 if (*p == CR || *p == LF) {
|
|
|
2497 break;
|
|
|
2498 }
|
|
|
2499 }
|
|
|
2500
|
|
|
2501 r->request_line.len = p - r->request_start;
|
|
|
2502 r->request_line.data = r->request_start;
|
|
|
2503 }
|
|
|
2504
|
|
|
2505 if (r->request_line.len) {
|
|
|
2506 p = ngx_snprintf(buf, len, ", request: \"%V\"", &r->request_line);
|
|
|
2507 len -= p - buf;
|
|
|
2508 buf = p;
|
|
|
2509 }
|
|
10
|
2510 }
|
|
|
2511
|
|
54
|
2512 return ngx_http_log_error_info(r, buf, len);
|
|
0
|
2513 }
|
|
54
|
2514
|
|
|
2515
|
|
|
2516 u_char *
|
|
|
2517 ngx_http_log_error_info(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
|
2518 {
|
|
|
2519 u_char *p;
|
|
|
2520
|
|
|
2521 if (r->headers_in.host) {
|
|
|
2522 p = ngx_snprintf(buf, len, ", host: \"%V\"",
|
|
|
2523 &r->headers_in.host->value);
|
|
|
2524 len -= p - buf;
|
|
|
2525 buf = p;
|
|
|
2526 }
|
|
|
2527
|
|
|
2528 if (r->headers_in.referer) {
|
|
|
2529 p = ngx_snprintf(buf, len, ", referrer: \"%V\"",
|
|
|
2530 &r->headers_in.referer->value);
|
|
|
2531 buf = p;
|
|
|
2532 }
|
|
|
2533
|
|
|
2534 return buf;
|
|
|
2535 }
|
