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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 static void ngx_http_process_request_line(ngx_event_t *rev);
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15 static void ngx_http_process_request_headers(ngx_event_t *rev);
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16 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
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17 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
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50
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18 ngx_uint_t request_line);
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58
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19
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20 static ngx_int_t ngx_http_process_header_line(ngx_http_request_t *r,
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21 ngx_table_elt_t *h, ngx_uint_t offset);
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72
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22 static ngx_int_t ngx_http_process_unique_header_line(ngx_http_request_t *r,
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23 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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24 static ngx_int_t ngx_http_process_cookie(ngx_http_request_t *r,
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25 ngx_table_elt_t *h, ngx_uint_t offset);
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26
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0
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27 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
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26
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28 static ngx_int_t ngx_http_find_virtual_server(ngx_http_request_t *r);
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0
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29
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58
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30 static void ngx_http_request_handler(ngx_event_t *ev);
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74
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31 static ngx_int_t ngx_http_set_write_handler(ngx_http_request_t *r);
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58
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32 static void ngx_http_writer(ngx_http_request_t *r);
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33 static ngx_int_t ngx_http_postponed_handler(ngx_http_request_t *r);
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34
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35 static void ngx_http_block_read(ngx_http_request_t *r);
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36 static void ngx_http_read_discarded_body_handler(ngx_http_request_t *r);
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0
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37 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r);
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38
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39 static void ngx_http_set_keepalive(ngx_http_request_t *r);
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40 static void ngx_http_keepalive_handler(ngx_event_t *ev);
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41 static void ngx_http_set_lingering_close(ngx_http_request_t *r);
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42 static void ngx_http_lingering_close_handler(ngx_event_t *ev);
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80
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43 static void ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error);
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44 static void ngx_http_close_connection(ngx_connection_t *c);
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0
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45
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32
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46 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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47 static u_char *ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf,
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48 size_t len);
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0
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49
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88
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50 #if (NGX_HTTP_SSL)
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51 static void ngx_http_ssl_handshake(ngx_event_t *rev);
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96
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52 static void ngx_http_ssl_handshake_handler(ngx_connection_t *c);
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88
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53 static void ngx_http_ssl_close_handler(ngx_event_t *ev);
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54 #endif
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55
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0
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56
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54
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57 static char *ngx_http_client_errors[] = {
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58
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59 /* NGX_HTTP_PARSE_INVALID_METHOD */
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60 "client sent invalid method",
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61
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62 /* NGX_HTTP_PARSE_INVALID_REQUEST */
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63 "client sent invalid request",
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64
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65 /* NGX_HTTP_PARSE_INVALID_09_METHOD */
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66 "client sent invalid method in HTTP/0.9 request"
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0
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67 };
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68
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69
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70 ngx_http_header_t ngx_http_headers_in[] = {
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58
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71 { ngx_string("Host"), offsetof(ngx_http_headers_in_t, host),
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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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74 { ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection),
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72
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75 ngx_http_process_unique_header_line },
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58
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76
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0
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77 { ngx_string("If-Modified-Since"),
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58
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78 offsetof(ngx_http_headers_in_t, if_modified_since),
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79 ngx_http_process_header_line },
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80
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81 { ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent),
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82 ngx_http_process_header_line },
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83
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84 { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer),
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85 ngx_http_process_header_line },
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86
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0
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87 { ngx_string("Content-Length"),
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58
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88 offsetof(ngx_http_headers_in_t, content_length),
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72
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89 ngx_http_process_unique_header_line },
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58
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90
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28
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91 { ngx_string("Content-Type"),
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58
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92 offsetof(ngx_http_headers_in_t, content_type),
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93 ngx_http_process_header_line },
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94
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95 { ngx_string("Range"), offsetof(ngx_http_headers_in_t, range),
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96 ngx_http_process_header_line },
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97
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0
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98 #if (NGX_HTTP_GZIP)
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99 { ngx_string("Accept-Encoding"),
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58
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100 offsetof(ngx_http_headers_in_t, accept_encoding),
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101 ngx_http_process_header_line },
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102
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103 { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via),
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104 ngx_http_process_header_line },
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0
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105 #endif
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106
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107 { ngx_string("Authorization"),
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58
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108 offsetof(ngx_http_headers_in_t, authorization),
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72
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109 ngx_http_process_unique_header_line },
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58
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110
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111 { ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive),
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112 ngx_http_process_header_line },
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0
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113
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114 #if (NGX_HTTP_PROXY)
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115 { ngx_string("X-Forwarded-For"),
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58
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116 offsetof(ngx_http_headers_in_t, x_forwarded_for),
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117 ngx_http_process_header_line },
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0
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118 #endif
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28
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119
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38
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120 #if (NGX_HTTP_HEADERS)
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58
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121 { ngx_string("Accept"), offsetof(ngx_http_headers_in_t, accept),
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122 ngx_http_process_header_line },
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123
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38
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124 { ngx_string("Accept-Language"),
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125 offsetof(ngx_http_headers_in_t, accept_language),
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126 ngx_http_process_header_line },
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38
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127 #endif
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128
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58
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129 { ngx_string("Cookie"), 0, ngx_http_process_cookie },
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130
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131 { ngx_null_string, 0, NULL }
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0
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132 };
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133
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134
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50
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135 void
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136 ngx_http_init_connection(ngx_connection_t *c)
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0
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137 {
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138 ngx_event_t *rev;
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139 ngx_http_log_ctx_t *ctx;
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140
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50
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141 ctx = ngx_palloc(c->pool, sizeof(ngx_http_log_ctx_t));
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142 if (ctx == NULL) {
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0
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143 ngx_http_close_connection(c);
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144 return;
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145 }
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146
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10
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147 ctx->client = &c->addr_text;
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148 ctx->request = NULL;
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32
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149
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150 c->log->connection = c->number;
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151 c->log->handler = ngx_http_log_error;
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0
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152 c->log->data = ctx;
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32
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153 c->log->action = "reading client request line";
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154
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0
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155 c->log_error = NGX_ERROR_INFO;
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156
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157 rev = c->read;
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58
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158 rev->handler = ngx_http_init_request;
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159
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160 /* STUB: epoll edge */ c->write->handler = ngx_http_empty_handler;
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0
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161
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162 if (rev->ready) {
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163 /* the deferred accept(), rtsig, aio, iocp */
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164
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165 if (ngx_accept_mutex) {
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166 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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42
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167
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0
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168 ngx_http_close_connection(c);
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169 return;
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170 }
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171
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172 ngx_post_event(rev);
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173
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174 ngx_mutex_unlock(ngx_posted_events_mutex);
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42
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175
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176 #if (NGX_STAT_STUB)
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110
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177 ngx_atomic_fetch_add(ngx_stat_reading, 1);
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42
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178 #endif
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0
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179 return;
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180 }
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181
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182 #if (NGX_STAT_STUB)
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110
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183 ngx_atomic_fetch_add(ngx_stat_reading, 1);
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0
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184 #endif
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185
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186 ngx_http_init_request(rev);
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187 return;
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188 }
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189
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190 ngx_add_timer(rev, c->listening->post_accept_timeout);
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191
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192 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
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193 ngx_http_close_connection(c);
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194 return;
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195 }
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196
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197 #if (NGX_STAT_STUB)
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110
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198 ngx_atomic_fetch_add(ngx_stat_reading, 1);
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0
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199 #endif
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200
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201 }
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202
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203
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50
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204 static
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205 void ngx_http_init_request(ngx_event_t *rev)
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0
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206 {
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207 ngx_uint_t i;
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208 socklen_t len;
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28
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209 struct sockaddr_in sin;
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0
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210 ngx_connection_t *c;
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211 ngx_http_request_t *r;
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212 ngx_http_in_port_t *in_port;
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213 ngx_http_in_addr_t *in_addr;
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54
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214 ngx_http_log_ctx_t *ctx;
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0
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215 ngx_http_connection_t *hc;
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216 ngx_http_server_name_t *server_name;
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217 ngx_http_core_srv_conf_t *cscf;
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218 ngx_http_core_loc_conf_t *clcf;
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219 #if (NGX_HTTP_SSL)
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220 ngx_http_ssl_srv_conf_t *sscf;
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221 #endif
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222
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223 c = rev->data;
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224
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225 if (rev->timedout) {
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226 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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227
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228 #if (NGX_STAT_STUB)
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110
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229 ngx_atomic_fetch_add(ngx_stat_reading, -1);
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0
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230 #endif
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231
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232 ngx_http_close_connection(c);
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233 return;
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234 }
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235
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236 hc = c->data;
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237
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238 if (hc) {
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239
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240 #if (NGX_STAT_STUB)
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110
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241 ngx_atomic_fetch_add(ngx_stat_reading, 1);
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0
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242 #endif
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243
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244 } else {
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50
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245 hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t));
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246 if (hc == NULL) {
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0
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247
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248 #if (NGX_STAT_STUB)
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110
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249 ngx_atomic_fetch_add(ngx_stat_reading, -1);
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0
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250 #endif
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251
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252 ngx_http_close_connection(c);
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253 return;
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254 }
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255 }
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256
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257 r = hc->request;
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258
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259 if (r) {
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260 ngx_memzero(r, sizeof(ngx_http_request_t));
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261
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262 r->pipeline = hc->pipeline;
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263
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264 if (hc->nbusy) {
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265 r->header_in = hc->busy[0];
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266 }
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267
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268 } else {
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50
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269 r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t));
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270 if (r == NULL) {
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0
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271
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272 #if (NGX_STAT_STUB)
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110
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273 ngx_atomic_fetch_add(ngx_stat_reading, -1);
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0
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274 #endif
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275
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276 ngx_http_close_connection(c);
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277 return;
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278 }
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279
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280 hc->request = r;
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281 }
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282
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283 #if (NGX_STAT_STUB)
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110
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284 ngx_atomic_fetch_add(ngx_stat_reading, -1);
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0
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285 #endif
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286
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287 c->data = r;
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288 r->http_connection = hc;
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289
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290 c->sent = 0;
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291 r->signature = NGX_HTTP_MODULE;
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292
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293 /* find the server configuration for the address:port */
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294
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295 /* AF_INET only */
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296
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297 in_port = c->servers;
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298 in_addr = in_port->addrs.elts;
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299
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300 r->port = in_port->port;
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301 r->port_text = &in_port->port_text;
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302
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303 i = 0;
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304
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305 if (in_port->addrs.nelts > 1) {
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306
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307 /*
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308 * There are several addresses on this port and one of them
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309 * is the "*:port" wildcard so getsockname() is needed to determine
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310 * the server address.
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311 *
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312 * AcceptEx() already gave this address.
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313 */
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314
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10
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315 #if (NGX_WIN32)
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0
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316 if (c->local_sockaddr) {
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317 r->in_addr =
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318 ((struct sockaddr_in *) c->local_sockaddr)->sin_addr.s_addr;
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319
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28
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320 } else
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0
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321 #endif
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28
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322 {
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0
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323 len = sizeof(struct sockaddr_in);
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28
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324 if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
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0
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325 ngx_connection_error(c, ngx_socket_errno,
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326 "getsockname() failed");
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327 ngx_http_close_connection(c);
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328 return;
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329 }
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330
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28
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331 r->in_addr = sin.sin_addr.s_addr;
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0
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332 }
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333
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334 /* the last in_port->addrs address is "*" */
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335
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336 for ( /* void */ ; i < in_port->addrs.nelts - 1; i++) {
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337 if (in_addr[i].addr == r->in_addr) {
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338 break;
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339 }
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340 }
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341
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342 } else {
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343 r->in_addr = in_addr[0].addr;
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344 }
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345
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26
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346 r->virtual_names = &in_addr[i];
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0
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347
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348 /* the default server configuration for the address:port */
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349 cscf = in_addr[i].core_srv_conf;
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350
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351 r->main_conf = cscf->ctx->main_conf;
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352 r->srv_conf = cscf->ctx->srv_conf;
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353 r->loc_conf = cscf->ctx->loc_conf;
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354
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58
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355 rev->handler = ngx_http_process_request_line;
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0
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356
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357 #if (NGX_HTTP_SSL)
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358
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359 sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module);
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360 if (sscf->enable) {
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361
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362 if (c->ssl == NULL) {
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96
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363 if (ngx_ssl_create_connection(&sscf->ssl, c, NGX_SSL_BUFFER)
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56
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364 == NGX_ERROR)
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0
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365 {
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366 ngx_http_close_connection(c);
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367 return;
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368 }
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369
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58
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370 rev->handler = ngx_http_ssl_handshake;
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0
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371 }
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372
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62
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373 r->main_filter_need_in_memory = 1;
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0
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374 }
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375
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376 #endif
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377
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|
|
378 server_name = cscf->server_names.elts;
|
|
6
|
379 r->server_name = server_name->name;
|
|
0
|
380
|
|
|
381 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
382 c->log->file = clcf->err_log->file;
|
|
|
383 if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
|
384 c->log->log_level = clcf->err_log->log_level;
|
|
|
385 }
|
|
|
386
|
|
|
387 if (c->buffer == NULL) {
|
|
|
388 c->buffer = ngx_create_temp_buf(c->pool,
|
|
|
389 cscf->client_header_buffer_size);
|
|
|
390 if (c->buffer == NULL) {
|
|
|
391 ngx_http_close_connection(c);
|
|
|
392 return;
|
|
|
393 }
|
|
|
394 }
|
|
|
395
|
|
|
396 if (r->header_in == NULL) {
|
|
|
397 r->header_in = c->buffer;
|
|
|
398 }
|
|
|
399
|
|
50
|
400 r->pool = ngx_create_pool(cscf->request_pool_size, c->log);
|
|
|
401 if (r->pool == NULL) {
|
|
0
|
402 ngx_http_close_connection(c);
|
|
|
403 return;
|
|
|
404 }
|
|
|
405
|
|
|
406
|
|
|
407 if (ngx_list_init(&r->headers_out.headers, r->pool, 20,
|
|
58
|
408 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
0
|
409 {
|
|
|
410 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
411 ngx_http_close_connection(c);
|
|
|
412 return;
|
|
|
413 }
|
|
|
414
|
|
|
415
|
|
|
416 r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
417 if (r->ctx == NULL) {
|
|
|
418 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
419 ngx_http_close_connection(c);
|
|
|
420 return;
|
|
|
421 }
|
|
|
422
|
|
|
423 c->single_connection = 1;
|
|
|
424 r->connection = c;
|
|
|
425
|
|
102
|
426 r->main = r;
|
|
|
427
|
|
46
|
428 r->start_time = ngx_time();
|
|
|
429
|
|
0
|
430 r->headers_in.content_length_n = -1;
|
|
|
431 r->headers_in.keep_alive_n = -1;
|
|
|
432 r->headers_out.content_length_n = -1;
|
|
|
433 r->headers_out.last_modified_time = -1;
|
|
|
434
|
|
|
435 r->http_state = NGX_HTTP_READING_REQUEST_STATE;
|
|
|
436
|
|
54
|
437 ctx = c->log->data;
|
|
|
438 ctx->request = r;
|
|
58
|
439 r->log_handler = ngx_http_log_error_handler;
|
|
54
|
440
|
|
0
|
441 #if (NGX_STAT_STUB)
|
|
110
|
442 ngx_atomic_fetch_add(ngx_stat_reading, 1);
|
|
26
|
443 r->stat_reading = 1;
|
|
110
|
444 ngx_atomic_fetch_add(ngx_stat_requests, 1);
|
|
0
|
445 #endif
|
|
|
446
|
|
58
|
447 rev->handler(rev);
|
|
0
|
448 }
|
|
|
449
|
|
|
450
|
|
|
451 #if (NGX_HTTP_SSL)
|
|
|
452
|
|
50
|
453 static void
|
|
|
454 ngx_http_ssl_handshake(ngx_event_t *rev)
|
|
0
|
455 {
|
|
10
|
456 u_char buf[1];
|
|
|
457 ssize_t n;
|
|
0
|
458 ngx_int_t rc;
|
|
|
459 ngx_connection_t *c;
|
|
|
460 ngx_http_request_t *r;
|
|
|
461
|
|
|
462 c = rev->data;
|
|
|
463 r = c->data;
|
|
|
464
|
|
|
465 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
466 "http check ssl handshake");
|
|
|
467
|
|
|
468 if (rev->timedout) {
|
|
54
|
469 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
470 c->timedout = 1;
|
|
|
471 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
472 ngx_http_close_connection(c);
|
|
0
|
473 return;
|
|
|
474 }
|
|
|
475
|
|
|
476 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
477
|
|
|
478 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
|
|
|
479 return;
|
|
|
480 }
|
|
|
481
|
|
|
482 if (n == 1) {
|
|
|
483 if (buf[0] == 0x80 /* SSLv2 */ || buf[0] == 0x16 /* SSLv3/TLSv1 */) {
|
|
|
484 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
10
|
485 "https ssl handshake: 0x%02Xd", buf[0]);
|
|
0
|
486
|
|
|
487 rc = ngx_ssl_handshake(c);
|
|
|
488
|
|
96
|
489 if (rc == NGX_AGAIN) {
|
|
|
490 c->ssl->handler = ngx_http_ssl_handshake_handler;
|
|
0
|
491 return;
|
|
|
492 }
|
|
|
493
|
|
96
|
494 ngx_http_ssl_handshake_handler(c);
|
|
|
495
|
|
|
496 return;
|
|
0
|
497
|
|
|
498 } else {
|
|
|
499 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
500 "plain http");
|
|
|
501
|
|
|
502 r->plain_http = 1;
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
58
|
506 rev->handler = ngx_http_process_request_line;
|
|
0
|
507 ngx_http_process_request_line(rev);
|
|
|
508 }
|
|
|
509
|
|
96
|
510
|
|
|
511 static void
|
|
|
512 ngx_http_ssl_handshake_handler(ngx_connection_t *c)
|
|
|
513 {
|
|
|
514 ngx_http_request_t *r;
|
|
|
515
|
|
|
516 if (c->ssl->handshaked) {
|
|
|
517
|
|
|
518 /*
|
|
|
519 * The majority of browsers do not send the "close notify" alert.
|
|
|
520 * Among them are MSIE, old Mozilla, Netscape 4, Konqueror,
|
|
|
521 * and Links. And what is more, MSIE ignores the server's alert.
|
|
|
522 *
|
|
|
523 * Opera and recent Mozilla send the alert.
|
|
|
524 */
|
|
|
525
|
|
|
526 c->ssl->no_wait_shutdown = 1;
|
|
|
527
|
|
|
528 c->read->handler = ngx_http_process_request_line;
|
|
|
529 /* STUB: epoll edge */ c->write->handler = ngx_http_empty_handler;
|
|
|
530
|
|
|
531 ngx_http_process_request_line(c->read);
|
|
|
532
|
|
|
533 return;
|
|
|
534 }
|
|
|
535
|
|
|
536 r = c->data;
|
|
|
537
|
|
|
538 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
539 ngx_http_close_connection(r->connection);
|
|
|
540
|
|
|
541 return;
|
|
|
542 }
|
|
|
543
|
|
|
544
|
|
0
|
545 #endif
|
|
|
546
|
|
|
547
|
|
50
|
548 static void
|
|
|
549 ngx_http_process_request_line(ngx_event_t *rev)
|
|
0
|
550 {
|
|
|
551 ssize_t n;
|
|
|
552 ngx_int_t rc, rv;
|
|
|
553 ngx_connection_t *c;
|
|
|
554 ngx_http_request_t *r;
|
|
|
555 ngx_http_log_ctx_t *ctx;
|
|
|
556
|
|
|
557 c = rev->data;
|
|
|
558 r = c->data;
|
|
|
559
|
|
|
560 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
561 "http process request line");
|
|
|
562
|
|
|
563 if (rev->timedout) {
|
|
54
|
564 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
565 c->timedout = 1;
|
|
|
566 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
567 ngx_http_close_connection(c);
|
|
0
|
568 return;
|
|
|
569 }
|
|
|
570
|
|
|
571 rc = NGX_AGAIN;
|
|
|
572
|
|
|
573 for ( ;; ) {
|
|
|
574
|
|
|
575 if (rc == NGX_AGAIN) {
|
|
|
576 n = ngx_http_read_request_header(r);
|
|
|
577
|
|
|
578 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
579 return;
|
|
|
580 }
|
|
|
581 }
|
|
|
582
|
|
|
583 rc = ngx_http_parse_request_line(r, r->header_in);
|
|
|
584
|
|
|
585 if (rc == NGX_OK) {
|
|
|
586
|
|
|
587 /* the request line has been parsed successfully */
|
|
|
588
|
|
10
|
589 r->request_line.len = r->request_end - r->request_start;
|
|
|
590 r->request_line.data = r->request_start;
|
|
|
591
|
|
0
|
592
|
|
|
593 if (r->args_start) {
|
|
|
594 r->uri.len = r->args_start - 1 - r->uri_start;
|
|
|
595 } else {
|
|
|
596 r->uri.len = r->uri_end - r->uri_start;
|
|
|
597 }
|
|
|
598
|
|
18
|
599
|
|
2
|
600 if (r->complex_uri || r->quoted_uri) {
|
|
10
|
601
|
|
50
|
602 r->uri.data = ngx_palloc(r->pool, r->uri.len + 1);
|
|
|
603 if (r->uri.data == NULL) {
|
|
10
|
604 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
605 ngx_http_close_connection(c);
|
|
|
606 return;
|
|
|
607 }
|
|
|
608
|
|
0
|
609 rc = ngx_http_parse_complex_uri(r);
|
|
|
610
|
|
54
|
611 if (rc == NGX_HTTP_PARSE_INVALID_REQUEST) {
|
|
|
612 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
613 "client sent invalid request");
|
|
|
614 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
0
|
615 return;
|
|
|
616 }
|
|
|
617
|
|
|
618 } else {
|
|
10
|
619 r->uri.data = r->uri_start;
|
|
0
|
620 }
|
|
|
621
|
|
18
|
622
|
|
10
|
623 r->unparsed_uri.len = r->uri_end - r->uri_start;
|
|
|
624 r->unparsed_uri.data = r->uri_start;
|
|
|
625
|
|
0
|
626
|
|
58
|
627 r->method_name.len = r->method_end - r->request_start + 1;
|
|
|
628 r->method_name.data = r->request_line.data;
|
|
0
|
629
|
|
10
|
630
|
|
28
|
631 if (r->http_protocol.data) {
|
|
|
632 r->http_protocol.len = r->request_end - r->http_protocol.data;
|
|
|
633 }
|
|
|
634
|
|
|
635
|
|
0
|
636 if (r->uri_ext) {
|
|
|
637 if (r->args_start) {
|
|
|
638 r->exten.len = r->args_start - 1 - r->uri_ext;
|
|
|
639 } else {
|
|
|
640 r->exten.len = r->uri_end - r->uri_ext;
|
|
|
641 }
|
|
|
642
|
|
10
|
643 r->exten.data = r->uri_ext;
|
|
0
|
644 }
|
|
|
645
|
|
10
|
646
|
|
0
|
647 if (r->args_start && r->uri_end > r->args_start) {
|
|
|
648 r->args.len = r->uri_end - r->args_start;
|
|
10
|
649 r->args.data = r->args_start;
|
|
0
|
650 }
|
|
|
651
|
|
10
|
652
|
|
|
653 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
654 "http request line: \"%V\"", &r->request_line);
|
|
|
655
|
|
0
|
656 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
657 "http uri: \"%V\"", &r->uri);
|
|
0
|
658
|
|
|
659 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
660 "http args: \"%V\"", &r->args);
|
|
0
|
661
|
|
|
662 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
10
|
663 "http exten: \"%V\"", &r->exten);
|
|
|
664
|
|
0
|
665 if (r->http_version < NGX_HTTP_VERSION_10) {
|
|
86
|
666
|
|
|
667 if (rev->timer_set) {
|
|
|
668 ngx_del_timer(rev);
|
|
|
669 }
|
|
|
670
|
|
|
671 #if (NGX_STAT_STUB)
|
|
110
|
672 ngx_atomic_fetch_add(ngx_stat_reading, -1);
|
|
86
|
673 r->stat_reading = 0;
|
|
110
|
674 ngx_atomic_fetch_add(ngx_stat_writing, 1);
|
|
86
|
675 r->stat_writing = 1;
|
|
|
676 #endif
|
|
|
677
|
|
|
678 rev->handler = ngx_http_request_handler;
|
|
|
679 c->write->handler = ngx_http_request_handler;
|
|
58
|
680 r->read_event_handler = ngx_http_block_read;
|
|
86
|
681
|
|
0
|
682 ngx_http_handler(r);
|
|
86
|
683
|
|
0
|
684 return;
|
|
|
685 }
|
|
|
686
|
|
|
687
|
|
|
688 if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
|
|
|
689 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
690 {
|
|
|
691 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
692 ngx_http_close_connection(c);
|
|
|
693 return;
|
|
|
694 }
|
|
|
695
|
|
|
696
|
|
48
|
697 if (ngx_array_init(&r->headers_in.cookies, r->pool, 2,
|
|
0
|
698 sizeof(ngx_table_elt_t *)) == NGX_ERROR)
|
|
|
699 {
|
|
|
700 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
701 ngx_http_close_connection(c);
|
|
|
702 return;
|
|
|
703 }
|
|
|
704
|
|
32
|
705 c->log->action = "reading client request headers";
|
|
0
|
706
|
|
58
|
707 rev->handler = ngx_http_process_request_headers;
|
|
0
|
708 ngx_http_process_request_headers(rev);
|
|
|
709
|
|
|
710 return;
|
|
54
|
711 }
|
|
|
712
|
|
|
713 if (rc != NGX_AGAIN) {
|
|
0
|
714
|
|
|
715 /* there was error while a request line parsing */
|
|
|
716
|
|
54
|
717 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
718 ngx_http_client_errors[rc - NGX_HTTP_CLIENT_ERROR]);
|
|
|
719 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
0
|
720 return;
|
|
|
721 }
|
|
|
722
|
|
|
723 /* NGX_AGAIN: a request line parsing is still incomplete */
|
|
|
724
|
|
|
725 if (r->header_in->pos == r->header_in->end) {
|
|
|
726
|
|
|
727 rv = ngx_http_alloc_large_header_buffer(r, 1);
|
|
|
728
|
|
|
729 if (rv == NGX_ERROR) {
|
|
|
730 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
731 ngx_http_close_connection(c);
|
|
|
732 return;
|
|
|
733 }
|
|
|
734
|
|
|
735 if (rv == NGX_DECLINED) {
|
|
54
|
736 ctx = c->log->data;
|
|
|
737 ctx->request = r;
|
|
|
738
|
|
|
739 r->request_line.len = r->header_in->end - r->request_start;
|
|
|
740 r->request_line.data = r->request_start;
|
|
|
741
|
|
|
742 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
743 "client sent too long URI");
|
|
|
744 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_URI_TOO_LARGE);
|
|
0
|
745 return;
|
|
|
746 }
|
|
|
747 }
|
|
|
748 }
|
|
|
749 }
|
|
|
750
|
|
|
751
|
|
50
|
752 static void
|
|
|
753 ngx_http_process_request_headers(ngx_event_t *rev)
|
|
0
|
754 {
|
|
56
|
755 ssize_t n;
|
|
|
756 ngx_int_t rc, rv;
|
|
|
757 ngx_uint_t key;
|
|
|
758 ngx_str_t header;
|
|
58
|
759 ngx_table_elt_t *h;
|
|
56
|
760 ngx_connection_t *c;
|
|
|
761 ngx_http_header_t *hh;
|
|
|
762 ngx_http_request_t *r;
|
|
60
|
763 ngx_http_core_srv_conf_t *cscf;
|
|
56
|
764 ngx_http_core_main_conf_t *cmcf;
|
|
0
|
765
|
|
|
766 c = rev->data;
|
|
|
767 r = c->data;
|
|
|
768
|
|
|
769 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
770 "http process request header line");
|
|
|
771
|
|
|
772 if (rev->timedout) {
|
|
54
|
773 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
|
|
|
774 c->timedout = 1;
|
|
|
775 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
776 ngx_http_close_connection(c);
|
|
0
|
777 return;
|
|
|
778 }
|
|
|
779
|
|
56
|
780 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
60
|
781 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
56
|
782 hh = (ngx_http_header_t *) cmcf->headers_in_hash.buckets;
|
|
|
783
|
|
0
|
784 rc = NGX_AGAIN;
|
|
|
785
|
|
|
786 for ( ;; ) {
|
|
|
787
|
|
|
788 if (rc == NGX_AGAIN) {
|
|
|
789
|
|
|
790 if (r->header_in->pos == r->header_in->end) {
|
|
|
791
|
|
|
792 rv = ngx_http_alloc_large_header_buffer(r, 0);
|
|
|
793
|
|
|
794 if (rv == NGX_ERROR) {
|
|
|
795 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
796 ngx_http_close_connection(c);
|
|
|
797 return;
|
|
|
798 }
|
|
|
799
|
|
|
800 if (rv == NGX_DECLINED) {
|
|
54
|
801 header.len = r->header_in->end - r->header_name_start;
|
|
|
802 header.data = r->header_name_start;
|
|
80
|
803
|
|
|
804 if (header.len > NGX_MAX_ERROR_STR - 300) {
|
|
|
805 header.len = NGX_MAX_ERROR_STR - 300;
|
|
|
806 header.data[header.len++] = '.';
|
|
|
807 header.data[header.len++] = '.';
|
|
|
808 header.data[header.len++] = '.';
|
|
|
809 }
|
|
|
810
|
|
54
|
811 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
812 "client sent too long header line: \"%V\"",
|
|
|
813 &header);
|
|
|
814 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
815 ngx_http_close_connection(c);
|
|
0
|
816 return;
|
|
|
817 }
|
|
|
818 }
|
|
|
819
|
|
|
820 n = ngx_http_read_request_header(r);
|
|
|
821
|
|
|
822 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
|
823 return;
|
|
|
824 }
|
|
|
825 }
|
|
|
826
|
|
|
827 rc = ngx_http_parse_header_line(r, r->header_in);
|
|
|
828
|
|
|
829 if (rc == NGX_OK) {
|
|
|
830
|
|
60
|
831 if (r->invalid_header && cscf->ignore_invalid_headers) {
|
|
52
|
832
|
|
|
833 /* there was error while a header line parsing */
|
|
|
834
|
|
|
835 header.len = r->header_end - r->header_name_start;
|
|
|
836 header.data = r->header_name_start;
|
|
|
837
|
|
54
|
838 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
839 "client sent invalid header line: \"%V\"",
|
|
52
|
840 &header);
|
|
|
841 continue;
|
|
|
842 }
|
|
|
843
|
|
0
|
844 /* a header line has been parsed successfully */
|
|
|
845
|
|
50
|
846 h = ngx_list_push(&r->headers_in.headers);
|
|
|
847 if (h == NULL) {
|
|
0
|
848 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
849 ngx_http_close_connection(c);
|
|
|
850 return;
|
|
|
851 }
|
|
|
852
|
|
56
|
853 h->hash = r->header_hash;
|
|
|
854
|
|
0
|
855 h->key.len = r->header_name_end - r->header_name_start;
|
|
|
856 h->key.data = r->header_name_start;
|
|
|
857 h->key.data[h->key.len] = '\0';
|
|
|
858
|
|
|
859 h->value.len = r->header_end - r->header_start;
|
|
|
860 h->value.data = r->header_start;
|
|
|
861 h->value.data[h->value.len] = '\0';
|
|
|
862
|
|
58
|
863 key = h->hash % cmcf->headers_in_hash.hash_size;
|
|
|
864
|
|
|
865 if (hh[key].name.len == h->key.len
|
|
|
866 && ngx_strcasecmp(hh[key].name.data, h->key.data) == 0)
|
|
0
|
867 {
|
|
58
|
868 if (hh[key].handler(r, h, hh[key].offset) != NGX_OK) {
|
|
0
|
869 return;
|
|
|
870 }
|
|
|
871 }
|
|
|
872
|
|
|
873 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
874 "http header: \"%V: %V\"",
|
|
|
875 &h->key, &h->value);
|
|
0
|
876
|
|
|
877 continue;
|
|
54
|
878 }
|
|
|
879
|
|
|
880 if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
|
|
0
|
881
|
|
|
882 /* a whole header has been parsed successfully */
|
|
|
883
|
|
|
884 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
885 "http header done");
|
|
|
886
|
|
24
|
887 r->request_length += r->header_in->pos - r->header_in->start;
|
|
|
888
|
|
0
|
889 r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
|
|
|
890
|
|
|
891 rc = ngx_http_process_request_header(r);
|
|
|
892
|
|
|
893 if (rc != NGX_OK) {
|
|
|
894 return;
|
|
|
895 }
|
|
|
896
|
|
|
897 if (rev->timer_set) {
|
|
|
898 ngx_del_timer(rev);
|
|
|
899 }
|
|
|
900
|
|
|
901 #if (NGX_STAT_STUB)
|
|
110
|
902 ngx_atomic_fetch_add(ngx_stat_reading, -1);
|
|
0
|
903 r->stat_reading = 0;
|
|
110
|
904 ngx_atomic_fetch_add(ngx_stat_writing, 1);
|
|
0
|
905 r->stat_writing = 1;
|
|
|
906 #endif
|
|
|
907
|
|
58
|
908 rev->handler = ngx_http_request_handler;
|
|
|
909 c->write->handler = ngx_http_request_handler;
|
|
|
910 r->read_event_handler = ngx_http_block_read;
|
|
|
911
|
|
0
|
912 ngx_http_handler(r);
|
|
86
|
913
|
|
0
|
914 return;
|
|
54
|
915 }
|
|
|
916
|
|
|
917 if (rc == NGX_AGAIN) {
|
|
|
918
|
|
|
919 /* a header line parsing is still not complete */
|
|
|
920
|
|
|
921 continue;
|
|
0
|
922 }
|
|
|
923
|
|
54
|
924 /* rc == NGX_HTTP_PARSE_INVALID_HEADER: "\r" is not followed by "\n" */
|
|
|
925
|
|
|
926 header.len = r->header_end - r->header_name_start;
|
|
|
927 header.data = r->header_name_start;
|
|
|
928 ngx_log_error(NGX_LOG_INFO, c->log, 0,
|
|
|
929 "client sent invalid header line: \"%V\\r...\"",
|
|
|
930 &header);
|
|
|
931 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
932 ngx_http_close_connection(c);
|
|
|
933 return;
|
|
0
|
934 }
|
|
|
935 }
|
|
|
936
|
|
|
937
|
|
50
|
938 static ssize_t
|
|
|
939 ngx_http_read_request_header(ngx_http_request_t *r)
|
|
0
|
940 {
|
|
|
941 ssize_t n;
|
|
|
942 ngx_event_t *rev;
|
|
|
943 ngx_http_core_srv_conf_t *cscf;
|
|
|
944
|
|
|
945 rev = r->connection->read;
|
|
|
946
|
|
|
947 n = r->header_in->last - r->header_in->pos;
|
|
|
948
|
|
|
949 if (n > 0) {
|
|
|
950 return n;
|
|
|
951 }
|
|
|
952
|
|
72
|
953 if (rev->ready) {
|
|
|
954 n = r->connection->recv(r->connection, r->header_in->last,
|
|
|
955 r->header_in->end - r->header_in->last);
|
|
|
956 } else {
|
|
|
957 n = NGX_AGAIN;
|
|
0
|
958 }
|
|
|
959
|
|
|
960 if (n == NGX_AGAIN) {
|
|
|
961 if (!r->header_timeout_set) {
|
|
|
962 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
963 ngx_add_timer(rev, cscf->client_header_timeout);
|
|
|
964 r->header_timeout_set = 1;
|
|
|
965 }
|
|
|
966
|
|
|
967 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
968 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
969 ngx_http_close_connection(r->connection);
|
|
|
970 return NGX_ERROR;
|
|
|
971 }
|
|
|
972
|
|
|
973 return NGX_AGAIN;
|
|
|
974 }
|
|
|
975
|
|
|
976 if (n == 0) {
|
|
|
977 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
978 "client closed prematurely connection");
|
|
|
979 }
|
|
|
980
|
|
|
981 if (n == 0 || n == NGX_ERROR) {
|
|
|
982 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
983 ngx_http_close_connection(r->connection);
|
|
|
984 return NGX_ERROR;
|
|
|
985 }
|
|
|
986
|
|
|
987 r->header_in->last += n;
|
|
|
988
|
|
|
989 return n;
|
|
|
990 }
|
|
|
991
|
|
|
992
|
|
50
|
993 static ngx_int_t
|
|
|
994 ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
|
|
|
995 ngx_uint_t request_line)
|
|
0
|
996 {
|
|
|
997 u_char *old, *new;
|
|
|
998 ngx_buf_t *b;
|
|
|
999 ngx_http_connection_t *hc;
|
|
|
1000 ngx_http_core_srv_conf_t *cscf;
|
|
|
1001
|
|
|
1002 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1003 "http alloc large header buffer");
|
|
|
1004
|
|
|
1005 if (request_line && r->state == 0) {
|
|
|
1006
|
|
|
1007 /* the client fills up the buffer with "\r\n" */
|
|
|
1008
|
|
24
|
1009 r->request_length += r->header_in->end - r->header_in->start;
|
|
|
1010
|
|
0
|
1011 r->header_in->pos = r->header_in->start;
|
|
|
1012 r->header_in->last = r->header_in->start;
|
|
|
1013
|
|
|
1014 return NGX_OK;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 old = request_line ? r->request_start : r->header_name_start;
|
|
|
1018
|
|
|
1019 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1020
|
|
|
1021 if (r->state != 0
|
|
|
1022 && (size_t) (r->header_in->pos - old)
|
|
|
1023 >= cscf->large_client_header_buffers.size)
|
|
|
1024 {
|
|
|
1025 return NGX_DECLINED;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 hc = r->http_connection;
|
|
|
1029
|
|
|
1030 if (hc->nfree) {
|
|
|
1031 b = hc->free[--hc->nfree];
|
|
|
1032
|
|
|
1033 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1034 "http large header free: %p %uz",
|
|
0
|
1035 b->pos, b->end - b->last);
|
|
|
1036
|
|
|
1037 } else if (hc->nbusy < cscf->large_client_header_buffers.num) {
|
|
|
1038
|
|
|
1039 if (hc->busy == NULL) {
|
|
|
1040 hc->busy = ngx_palloc(r->connection->pool,
|
|
|
1041 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
1042 if (hc->busy == NULL) {
|
|
|
1043 return NGX_ERROR;
|
|
|
1044 }
|
|
|
1045 }
|
|
|
1046
|
|
|
1047 b = ngx_create_temp_buf(r->connection->pool,
|
|
|
1048 cscf->large_client_header_buffers.size);
|
|
|
1049 if (b == NULL) {
|
|
|
1050 return NGX_ERROR;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
1054 "http large header alloc: %p %uz",
|
|
0
|
1055 b->pos, b->end - b->last);
|
|
|
1056
|
|
|
1057 } else {
|
|
|
1058 return NGX_DECLINED;
|
|
|
1059 }
|
|
|
1060
|
|
|
1061 hc->busy[hc->nbusy++] = b;
|
|
|
1062
|
|
|
1063 if (r->state == 0) {
|
|
|
1064 /*
|
|
|
1065 * r->state == 0 means that a header line was parsed successfully
|
|
|
1066 * and we do not need to copy incomplete header line and
|
|
|
1067 * to relocate the parser header pointers
|
|
|
1068 */
|
|
|
1069
|
|
24
|
1070 r->request_length += r->header_in->end - r->header_in->start;
|
|
|
1071
|
|
0
|
1072 r->header_in = b;
|
|
|
1073
|
|
|
1074 return NGX_OK;
|
|
|
1075 }
|
|
|
1076
|
|
|
1077 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1078 "http large header copy: %d", r->header_in->pos - old);
|
|
|
1079
|
|
24
|
1080 r->request_length += old - r->header_in->start;
|
|
|
1081
|
|
0
|
1082 new = b->start;
|
|
|
1083
|
|
|
1084 ngx_memcpy(new, old, r->header_in->pos - old);
|
|
|
1085
|
|
|
1086 b->pos = new + (r->header_in->pos - old);
|
|
|
1087 b->last = new + (r->header_in->pos - old);
|
|
|
1088
|
|
|
1089 if (request_line) {
|
|
|
1090 r->request_start = new;
|
|
|
1091
|
|
|
1092 if (r->request_end) {
|
|
|
1093 r->request_end = new + (r->request_end - old);
|
|
|
1094 }
|
|
|
1095
|
|
|
1096 r->method_end = new + (r->method_end - old);
|
|
|
1097
|
|
|
1098 r->uri_start = new + (r->uri_start - old);
|
|
|
1099 r->uri_end = new + (r->uri_end - old);
|
|
|
1100
|
|
|
1101 if (r->schema_start) {
|
|
|
1102 r->schema_start = new + (r->schema_start - old);
|
|
|
1103 r->schema_end = new + (r->schema_end - old);
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 if (r->host_start) {
|
|
|
1107 r->host_start = new + (r->host_start - old);
|
|
|
1108 r->host_end = new + (r->host_end - old);
|
|
|
1109 }
|
|
|
1110
|
|
|
1111 if (r->port_start) {
|
|
|
1112 r->port_start = new + (r->port_start - old);
|
|
|
1113 r->port_end = new + (r->port_end - old);
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 if (r->uri_ext) {
|
|
|
1117 r->uri_ext = new + (r->uri_ext - old);
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 if (r->args_start) {
|
|
|
1121 r->args_start = new + (r->args_start - old);
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 } else {
|
|
|
1125 r->header_name_start = new;
|
|
|
1126 r->header_name_end = new + (r->header_name_end - old);
|
|
|
1127 r->header_start = new + (r->header_start - old);
|
|
|
1128 r->header_end = new + (r->header_end - old);
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 r->header_in = b;
|
|
|
1132
|
|
|
1133 return NGX_OK;
|
|
|
1134 }
|
|
|
1135
|
|
|
1136
|
|
50
|
1137 static ngx_int_t
|
|
58
|
1138 ngx_http_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1139 ngx_uint_t offset)
|
|
|
1140 {
|
|
|
1141 ngx_table_elt_t **ph;
|
|
|
1142
|
|
|
1143 ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);
|
|
|
1144
|
|
|
1145 if (*ph == NULL) {
|
|
|
1146 *ph = h;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 return NGX_OK;
|
|
|
1150 }
|
|
|
1151
|
|
|
1152
|
|
|
1153 static ngx_int_t
|
|
72
|
1154 ngx_http_process_unique_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1155 ngx_uint_t offset)
|
|
|
1156 {
|
|
|
1157 ngx_table_elt_t **ph;
|
|
|
1158
|
|
|
1159 ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);
|
|
|
1160
|
|
|
1161 if (*ph == NULL) {
|
|
|
1162 *ph = h;
|
|
|
1163 return NGX_OK;
|
|
|
1164 }
|
|
|
1165
|
|
|
1166 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1167 "client sent duplicate header line: \"%V: %V\"",
|
|
|
1168 &h->key, &h->value);
|
|
|
1169
|
|
|
1170 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1171
|
|
|
1172 return NGX_ERROR;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175
|
|
|
1176 static ngx_int_t
|
|
58
|
1177 ngx_http_process_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1178 ngx_uint_t offset)
|
|
|
1179 {
|
|
|
1180 ngx_table_elt_t **cookie;
|
|
|
1181
|
|
|
1182 cookie = ngx_array_push(&r->headers_in.cookies);
|
|
72
|
1183 if (cookie) {
|
|
|
1184 *cookie = h;
|
|
|
1185 return NGX_OK;
|
|
58
|
1186 }
|
|
|
1187
|
|
72
|
1188 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1189 ngx_http_close_connection(r->connection);
|
|
|
1190
|
|
|
1191 return NGX_ERROR;
|
|
58
|
1192 }
|
|
|
1193
|
|
|
1194
|
|
|
1195 static ngx_int_t
|
|
50
|
1196 ngx_http_process_request_header(ngx_http_request_t *r)
|
|
0
|
1197 {
|
|
54
|
1198 size_t len;
|
|
|
1199 u_char *ua, *user_agent, ch;
|
|
|
1200 ngx_http_core_srv_conf_t *cscf;
|
|
0
|
1201
|
|
|
1202 if (r->headers_in.host) {
|
|
|
1203 for (len = 0; len < r->headers_in.host->value.len; len++) {
|
|
26
|
1204 ch = r->headers_in.host->value.data[len];
|
|
|
1205
|
|
|
1206 if (ch == ':') {
|
|
0
|
1207 break;
|
|
|
1208 }
|
|
26
|
1209
|
|
|
1210 r->headers_in.host->value.data[len] = ngx_tolower(ch);
|
|
0
|
1211 }
|
|
54
|
1212
|
|
58
|
1213 if (r->headers_in.host->value.data[len - 1] == '.') {
|
|
|
1214 len--;
|
|
|
1215 }
|
|
|
1216
|
|
0
|
1217 r->headers_in.host_name_len = len;
|
|
|
1218
|
|
26
|
1219 if (ngx_http_find_virtual_server(r) != NGX_OK) {
|
|
54
|
1220 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1221 "client sent invalid \"Host\" header");
|
|
|
1222
|
|
|
1223 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1224
|
|
|
1225 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_CLOSE) {
|
|
|
1226 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1227 ngx_http_close_connection(r->connection);
|
|
|
1228 return NGX_ERROR;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 ngx_http_finalize_request(r, NGX_HTTP_INVALID_HOST);
|
|
|
1232 return NGX_ERROR;
|
|
0
|
1233 }
|
|
|
1234
|
|
|
1235 } else {
|
|
|
1236 if (r->http_version > NGX_HTTP_VERSION_10) {
|
|
54
|
1237 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1238 "client sent HTTP/1.1 request without \"Host\" header");
|
|
|
1239 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1240 return NGX_ERROR;
|
|
0
|
1241 }
|
|
54
|
1242
|
|
0
|
1243 r->headers_in.host_name_len = 0;
|
|
|
1244 }
|
|
|
1245
|
|
|
1246 if (r->headers_in.content_length) {
|
|
|
1247 r->headers_in.content_length_n =
|
|
50
|
1248 ngx_atosz(r->headers_in.content_length->value.data,
|
|
0
|
1249 r->headers_in.content_length->value.len);
|
|
|
1250
|
|
|
1251 if (r->headers_in.content_length_n == NGX_ERROR) {
|
|
54
|
1252 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1253 "client sent invalid \"Content-Length\" header");
|
|
|
1254 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1255 return NGX_ERROR;
|
|
0
|
1256 }
|
|
|
1257 }
|
|
|
1258
|
|
32
|
1259 if (r->method == NGX_HTTP_POST && r->headers_in.content_length_n == -1) {
|
|
54
|
1260 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1261 "client sent POST method without \"Content-Length\" header");
|
|
|
1262 ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
|
|
|
1263 return NGX_ERROR;
|
|
0
|
1264 }
|
|
|
1265
|
|
|
1266 if (r->plain_http) {
|
|
54
|
1267 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
|
1268 "client sent plain HTTP request to HTTPS port");
|
|
|
1269 ngx_http_finalize_request(r, NGX_HTTP_TO_HTTPS);
|
|
|
1270 return NGX_ERROR;
|
|
0
|
1271 }
|
|
|
1272
|
|
|
1273 if (r->headers_in.connection) {
|
|
|
1274 if (r->headers_in.connection->value.len == 5
|
|
|
1275 && ngx_strcasecmp(r->headers_in.connection->value.data, "close")
|
|
58
|
1276 == 0)
|
|
0
|
1277 {
|
|
|
1278 r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
|
|
|
1279
|
|
|
1280 } else if (r->headers_in.connection->value.len == 10
|
|
|
1281 && ngx_strcasecmp(r->headers_in.connection->value.data,
|
|
58
|
1282 "keep-alive") == 0)
|
|
0
|
1283 {
|
|
|
1284 r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE;
|
|
|
1285
|
|
|
1286 if (r->headers_in.keep_alive) {
|
|
|
1287 r->headers_in.keep_alive_n =
|
|
50
|
1288 ngx_atotm(r->headers_in.keep_alive->value.data,
|
|
0
|
1289 r->headers_in.keep_alive->value.len);
|
|
|
1290 }
|
|
|
1291 }
|
|
|
1292 }
|
|
|
1293
|
|
|
1294 if (r->headers_in.user_agent) {
|
|
|
1295
|
|
|
1296 /*
|
|
|
1297 * check some widespread browsers while the headers are still
|
|
|
1298 * in CPU cache
|
|
|
1299 */
|
|
|
1300
|
|
|
1301 user_agent = r->headers_in.user_agent->value.data;
|
|
|
1302
|
|
|
1303 ua = (u_char *) ngx_strstr(user_agent, "MSIE");
|
|
|
1304
|
|
|
1305 if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
|
|
|
1306
|
|
|
1307 r->headers_in.msie = 1;
|
|
|
1308
|
|
|
1309 if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
|
|
|
1310 r->headers_in.msie4 = 1;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313 #if 0
|
|
|
1314 /* MSIE ignores the SSL "close notify" alert */
|
|
22
|
1315 if (c->ssl) {
|
|
96
|
1316 c->ssl->no_send_shutdown = 1;
|
|
22
|
1317 }
|
|
0
|
1318 #endif
|
|
|
1319 }
|
|
|
1320
|
|
|
1321 if (ngx_strstr(user_agent, "Opera")) {
|
|
|
1322 r->headers_in.opera = 1;
|
|
|
1323 r->headers_in.msie = 0;
|
|
|
1324 r->headers_in.msie4 = 0;
|
|
|
1325 }
|
|
|
1326
|
|
|
1327 if (!r->headers_in.msie && !r->headers_in.opera) {
|
|
|
1328
|
|
|
1329 if (ngx_strstr(user_agent, "Gecko/")) {
|
|
|
1330 r->headers_in.gecko = 1;
|
|
|
1331
|
|
|
1332 } else if (ngx_strstr(user_agent, "Konqueror")) {
|
|
|
1333 r->headers_in.konqueror = 1;
|
|
|
1334 }
|
|
|
1335 }
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 return NGX_OK;
|
|
|
1339 }
|
|
|
1340
|
|
|
1341
|
|
50
|
1342 static ngx_int_t
|
|
|
1343 ngx_http_find_virtual_server(ngx_http_request_t *r)
|
|
26
|
1344 {
|
|
|
1345 ngx_int_t rc;
|
|
58
|
1346 ngx_uint_t i, n, key;
|
|
26
|
1347 ngx_http_server_name_t *name;
|
|
56
|
1348 ngx_http_core_loc_conf_t *clcf;
|
|
26
|
1349 ngx_http_core_srv_conf_t *cscf;
|
|
56
|
1350 ngx_http_core_main_conf_t *cmcf;
|
|
26
|
1351
|
|
|
1352 if (r->virtual_names->hash) {
|
|
|
1353 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
|
1354
|
|
|
1355 ngx_http_server_names_hash_key(key,
|
|
|
1356 r->headers_in.host->value.data,
|
|
|
1357 r->headers_in.host_name_len,
|
|
|
1358 cmcf->server_names_hash);
|
|
|
1359
|
|
|
1360 name = r->virtual_names->hash[key].elts;
|
|
|
1361 n = r->virtual_names->hash[key].nelts;
|
|
|
1362
|
|
|
1363 } else {
|
|
|
1364 name = r->virtual_names->names.elts;
|
|
|
1365 n = r->virtual_names->names.nelts;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 for (i = 0; i < n; i++) {
|
|
|
1369
|
|
|
1370 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1371 "server name: %V", &name[i].name);
|
|
|
1372
|
|
|
1373 if (r->headers_in.host_name_len != name[i].name.len) {
|
|
|
1374 continue;
|
|
|
1375 }
|
|
|
1376
|
|
|
1377 rc = ngx_strncmp(r->headers_in.host->value.data,
|
|
|
1378 name[i].name.data, name[i].name.len);
|
|
|
1379
|
|
|
1380 if (rc == 0) {
|
|
|
1381 r->server_name = name[i].name;
|
|
58
|
1382 goto found;
|
|
26
|
1383 }
|
|
|
1384
|
|
|
1385 if (rc < 0) {
|
|
|
1386 /* the server names are lexicographically sorted */
|
|
|
1387 break;
|
|
|
1388 }
|
|
|
1389 }
|
|
|
1390
|
|
58
|
1391 if (r->virtual_names->wildcards.nelts) {
|
|
26
|
1392
|
|
|
1393 name = r->virtual_names->wildcards.elts;
|
|
|
1394 for (i = 0; i < r->virtual_names->wildcards.nelts; i++) {
|
|
|
1395
|
|
|
1396 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1397 "server name: %V", &name[i].name);
|
|
|
1398
|
|
|
1399 if (r->headers_in.host_name_len <= name[i].name.len) {
|
|
|
1400 continue;
|
|
|
1401 }
|
|
|
1402
|
|
|
1403 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1404 "server name: %s",
|
|
|
1405 r->headers_in.host->value.data
|
|
|
1406 + (r->headers_in.host_name_len - name[i].name.len));
|
|
|
1407
|
|
|
1408 if (ngx_strncmp(r->headers_in.host->value.data
|
|
|
1409 + (r->headers_in.host_name_len - name[i].name.len),
|
|
|
1410 name[i].name.data, name[i].name.len) == 0)
|
|
|
1411 {
|
|
|
1412 r->server_name.len = r->headers_in.host_name_len;
|
|
|
1413 r->server_name.data = r->headers_in.host->value.data;
|
|
|
1414
|
|
58
|
1415 goto found;
|
|
26
|
1416 }
|
|
|
1417 }
|
|
|
1418 }
|
|
|
1419
|
|
58
|
1420 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1421
|
|
|
1422 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_OFF) {
|
|
26
|
1423 return NGX_OK;
|
|
|
1424 }
|
|
|
1425
|
|
58
|
1426 return NGX_ERROR;
|
|
|
1427
|
|
|
1428 found:
|
|
|
1429
|
|
|
1430 r->srv_conf = name[i].core_srv_conf->ctx->srv_conf;
|
|
|
1431 r->loc_conf = name[i].core_srv_conf->ctx->loc_conf;
|
|
|
1432
|
|
|
1433 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1434 r->connection->log->file = clcf->err_log->file;
|
|
|
1435
|
|
|
1436 if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
|
1437 r->connection->log->log_level = clcf->err_log->log_level;
|
|
26
|
1438 }
|
|
|
1439
|
|
|
1440 return NGX_OK;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443
|
|
58
|
1444 static void
|
|
|
1445 ngx_http_request_handler(ngx_event_t *ev)
|
|
|
1446 {
|
|
|
1447 ngx_connection_t *c;
|
|
|
1448 ngx_http_request_t *r;
|
|
|
1449
|
|
|
1450 c = ev->data;
|
|
|
1451 r = c->data;
|
|
|
1452
|
|
|
1453 if (ev->write) {
|
|
|
1454 r->write_event_handler(r);
|
|
|
1455
|
|
|
1456 } else {
|
|
|
1457 r->read_event_handler(r);
|
|
|
1458 }
|
|
|
1459 }
|
|
|
1460
|
|
|
1461
|
|
50
|
1462 void
|
|
58
|
1463 ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
0
|
1464 {
|
|
58
|
1465 ngx_http_request_t *pr;
|
|
0
|
1466 ngx_http_core_loc_conf_t *clcf;
|
|
|
1467
|
|
58
|
1468 if (rc == NGX_DONE) {
|
|
|
1469 /* r may be already destroyed when rc == NGX_DONE */
|
|
|
1470 return;
|
|
|
1471 }
|
|
|
1472
|
|
|
1473 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1474 "http finalize request: %d, \"%V\"", rc, &r->uri);
|
|
|
1475
|
|
60
|
1476 if (r->parent
|
|
|
1477 && (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT))
|
|
|
1478 {
|
|
58
|
1479 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
0
|
1480 return;
|
|
|
1481 }
|
|
|
1482
|
|
58
|
1483 if (r->parent || rc == NGX_AGAIN) {
|
|
74
|
1484 if (ngx_http_set_write_handler(r) != NGX_OK) {
|
|
|
1485 return;
|
|
|
1486 }
|
|
58
|
1487 }
|
|
|
1488
|
|
|
1489 r->done = 1;
|
|
|
1490
|
|
|
1491 if (r != r->connection->data) {
|
|
76
|
1492 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1493 "http finalize non-active request: \"%V\"", &r->uri);
|
|
58
|
1494 return;
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 if (r->parent) {
|
|
|
1498
|
|
|
1499 pr = r->parent;
|
|
|
1500
|
|
76
|
1501 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1502 "http parent request: \"%V\"", &pr->uri);
|
|
|
1503
|
|
58
|
1504 if (rc != NGX_AGAIN) {
|
|
|
1505 pr->connection->data = pr;
|
|
|
1506 }
|
|
|
1507
|
|
|
1508 if (pr->postponed) {
|
|
|
1509
|
|
76
|
1510 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1511 "http request: \"%V\" has postponed", &pr->uri);
|
|
|
1512
|
|
58
|
1513 if (rc != NGX_AGAIN && pr->postponed->request == r) {
|
|
|
1514 pr->postponed = pr->postponed->next;
|
|
|
1515
|
|
|
1516 if (pr->postponed == NULL) {
|
|
|
1517 return;
|
|
|
1518 }
|
|
|
1519 }
|
|
|
1520
|
|
76
|
1521 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1522 "http request: \"%V\" still has postponed",
|
|
|
1523 &pr->uri);
|
|
|
1524
|
|
58
|
1525 if (pr->done) {
|
|
|
1526 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1527 "http wake parent request: \"%V\"", &pr->uri);
|
|
58
|
1528
|
|
|
1529 pr->write_event_handler(pr);
|
|
|
1530 }
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 return;
|
|
|
1534 }
|
|
0
|
1535
|
|
60
|
1536 if (rc >= NGX_HTTP_SPECIAL_RESPONSE || rc == NGX_HTTP_NO_CONTENT) {
|
|
0
|
1537
|
|
|
1538 if (r->connection->read->timer_set) {
|
|
|
1539 ngx_del_timer(r->connection->read);
|
|
|
1540 }
|
|
|
1541
|
|
|
1542 if (r->connection->write->timer_set) {
|
|
|
1543 ngx_del_timer(r->connection->write);
|
|
|
1544 }
|
|
|
1545
|
|
76
|
1546 if (r->connection->closed) {
|
|
0
|
1547 ngx_http_close_request(r, 0);
|
|
|
1548 ngx_http_close_connection(r->connection);
|
|
|
1549 return;
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
|
1553
|
|
|
1554 return;
|
|
76
|
1555 }
|
|
|
1556
|
|
|
1557 if (rc == NGX_ERROR || r->connection->closed) {
|
|
0
|
1558 ngx_http_close_request(r, 0);
|
|
|
1559 ngx_http_close_connection(r->connection);
|
|
|
1560 return;
|
|
76
|
1561 }
|
|
|
1562
|
|
|
1563 if (rc == NGX_AGAIN || r->out) {
|
|
74
|
1564 (void) ngx_http_set_write_handler(r);
|
|
0
|
1565 return;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 if (r->connection->read->timer_set) {
|
|
|
1569 ngx_del_timer(r->connection->read);
|
|
|
1570 }
|
|
|
1571
|
|
|
1572 if (r->connection->write->timer_set) {
|
|
|
1573 r->connection->write->delayed = 0;
|
|
|
1574 ngx_del_timer(r->connection->write);
|
|
|
1575 }
|
|
|
1576
|
|
|
1577 if (r->connection->read->pending_eof) {
|
|
22
|
1578 #if (NGX_HAVE_KQUEUE)
|
|
0
|
1579 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log,
|
|
|
1580 r->connection->read->kq_errno,
|
|
|
1581 "kevent() reported about an closed connection");
|
|
|
1582 #endif
|
|
|
1583 ngx_http_close_request(r, 0);
|
|
|
1584 ngx_http_close_connection(r->connection);
|
|
|
1585 return;
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1589
|
|
|
1590 if (!ngx_terminate
|
|
|
1591 && !ngx_exiting
|
|
|
1592 && r->keepalive != 0
|
|
|
1593 && clcf->keepalive_timeout > 0)
|
|
|
1594 {
|
|
|
1595 ngx_http_set_keepalive(r);
|
|
|
1596 return;
|
|
|
1597
|
|
|
1598 } else if (r->lingering_close && clcf->lingering_timeout > 0) {
|
|
|
1599 ngx_http_set_lingering_close(r);
|
|
|
1600 return;
|
|
|
1601 }
|
|
|
1602
|
|
|
1603 ngx_http_close_request(r, 0);
|
|
|
1604 ngx_http_close_connection(r->connection);
|
|
|
1605 }
|
|
|
1606
|
|
|
1607
|
|
74
|
1608 static ngx_int_t
|
|
50
|
1609 ngx_http_set_write_handler(ngx_http_request_t *r)
|
|
0
|
1610 {
|
|
|
1611 ngx_event_t *wev;
|
|
|
1612 ngx_http_core_loc_conf_t *clcf;
|
|
|
1613
|
|
58
|
1614 r->http_state = NGX_HTTP_WRITING_REQUEST_STATE;
|
|
|
1615
|
|
74
|
1616 r->write_event_handler = ngx_http_writer;
|
|
|
1617
|
|
76
|
1618 if (r->connection->closed) {
|
|
|
1619 return NGX_OK;
|
|
|
1620 }
|
|
|
1621
|
|
0
|
1622 wev = r->connection->write;
|
|
|
1623
|
|
|
1624 if (wev->ready && wev->delayed) {
|
|
74
|
1625 return NGX_OK;
|
|
0
|
1626 }
|
|
|
1627
|
|
58
|
1628 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
0
|
1629 if (!wev->delayed) {
|
|
|
1630 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1631 }
|
|
|
1632
|
|
2
|
1633 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1634 ngx_http_close_request(r, 0);
|
|
|
1635 ngx_http_close_connection(r->connection);
|
|
74
|
1636 return NGX_ERROR;
|
|
0
|
1637 }
|
|
74
|
1638
|
|
|
1639 return NGX_OK;
|
|
0
|
1640 }
|
|
|
1641
|
|
|
1642
|
|
58
|
1643 static void
|
|
|
1644 ngx_http_writer(ngx_http_request_t *r)
|
|
0
|
1645 {
|
|
|
1646 int rc;
|
|
58
|
1647 ngx_event_t *wev;
|
|
0
|
1648 ngx_connection_t *c;
|
|
|
1649 ngx_http_core_loc_conf_t *clcf;
|
|
|
1650
|
|
58
|
1651 c = r->connection;
|
|
|
1652 wev = c->write;
|
|
|
1653
|
|
|
1654 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1655 "http writer handler: \"%V\"", &r->uri);
|
|
0
|
1656
|
|
|
1657 if (wev->timedout) {
|
|
|
1658 if (!wev->delayed) {
|
|
54
|
1659 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT,
|
|
|
1660 "client timed out");
|
|
|
1661 c->timedout = 1;
|
|
|
1662 ngx_http_close_request(r, NGX_HTTP_REQUEST_TIME_OUT);
|
|
|
1663 ngx_http_close_connection(c);
|
|
0
|
1664 return;
|
|
|
1665 }
|
|
|
1666
|
|
|
1667 wev->timedout = 0;
|
|
|
1668 wev->delayed = 0;
|
|
|
1669
|
|
|
1670 if (!wev->ready) {
|
|
102
|
1671 clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module);
|
|
0
|
1672 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1673
|
|
2
|
1674 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1675 ngx_http_close_request(r, 0);
|
|
|
1676 ngx_http_close_connection(r->connection);
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 return;
|
|
|
1680 }
|
|
|
1681
|
|
|
1682 } else {
|
|
|
1683 if (wev->delayed) {
|
|
|
1684 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1685 "http writer delayed");
|
|
|
1686
|
|
102
|
1687 clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module);
|
|
2
|
1688
|
|
|
1689 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1690 ngx_http_close_request(r, 0);
|
|
|
1691 ngx_http_close_connection(r->connection);
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 return;
|
|
|
1695 }
|
|
|
1696 }
|
|
|
1697
|
|
58
|
1698 if (r->postponed) {
|
|
|
1699 rc = ngx_http_postponed_handler(r);
|
|
|
1700
|
|
|
1701 if (rc == NGX_DONE) {
|
|
|
1702 /* r may be already destroyed when rc == NGX_DONE */
|
|
|
1703 return;
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 } else {
|
|
|
1707 rc = ngx_http_output_filter(r, NULL);
|
|
|
1708
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1712 "http writer output filter: %d, \"%V\"", rc, &r->uri);
|
|
0
|
1713
|
|
|
1714 if (rc == NGX_AGAIN) {
|
|
102
|
1715 clcf = ngx_http_get_module_loc_conf(r->main, ngx_http_core_module);
|
|
0
|
1716 if (!wev->ready && !wev->delayed) {
|
|
|
1717 ngx_add_timer(wev, clcf->send_timeout);
|
|
|
1718 }
|
|
|
1719
|
|
2
|
1720 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
|
0
|
1721 ngx_http_close_request(r, 0);
|
|
|
1722 ngx_http_close_connection(r->connection);
|
|
|
1723 }
|
|
|
1724
|
|
|
1725 return;
|
|
|
1726 }
|
|
|
1727
|
|
58
|
1728 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1729 "http writer done: \"%V\"", &r->uri);
|
|
0
|
1730
|
|
|
1731 ngx_http_finalize_request(r, rc);
|
|
|
1732 }
|
|
|
1733
|
|
|
1734
|
|
58
|
1735 static ngx_int_t
|
|
|
1736 ngx_http_postponed_handler(ngx_http_request_t *r)
|
|
|
1737 {
|
|
|
1738 ngx_int_t rc;
|
|
|
1739 ngx_http_postponed_request_t *pr;
|
|
|
1740
|
|
|
1741 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1742 "http postpone handler \"%V\"", &r->uri);
|
|
|
1743
|
|
|
1744 pr = r->postponed;
|
|
|
1745
|
|
|
1746 if (pr->request == NULL) {
|
|
|
1747 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1748 "http postponed data \"%V\" %p", &r->uri, pr->out);
|
|
|
1749
|
|
|
1750 rc = ngx_http_output_filter(r, NULL);
|
|
|
1751
|
|
|
1752 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1753 "http postponed output filter: %d", rc);
|
|
58
|
1754
|
|
76
|
1755 /*
|
|
|
1756 * we treat NGX_ERROR as NGX_OK, because we need to complete
|
|
|
1757 * all postponed requests
|
|
|
1758 */
|
|
58
|
1759
|
|
|
1760 pr = r->postponed;
|
|
|
1761
|
|
|
1762 if (pr == NULL) {
|
|
92
|
1763
|
|
|
1764 if (rc == NGX_AGAIN) {
|
|
|
1765 return NGX_AGAIN;
|
|
|
1766 }
|
|
|
1767
|
|
58
|
1768 return NGX_OK;
|
|
|
1769 }
|
|
|
1770 }
|
|
|
1771
|
|
|
1772 r = pr->request;
|
|
|
1773 r->connection->data = r;
|
|
|
1774
|
|
|
1775 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
76
|
1776 "http wake child request \"%V\"", &r->uri);
|
|
58
|
1777
|
|
|
1778 r->write_event_handler(r);
|
|
|
1779
|
|
|
1780 return NGX_DONE;
|
|
|
1781 }
|
|
|
1782
|
|
|
1783
|
|
50
|
1784 static void
|
|
58
|
1785 ngx_http_block_read(ngx_http_request_t *r)
|
|
0
|
1786 {
|
|
58
|
1787 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1788 "http read blocked");
|
|
0
|
1789
|
|
|
1790 /* aio does not call this handler */
|
|
|
1791
|
|
58
|
1792 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT)
|
|
|
1793 && r->connection->read->active)
|
|
|
1794 {
|
|
|
1795 if (ngx_del_event(r->connection->read, NGX_READ_EVENT, 0)
|
|
|
1796 == NGX_ERROR)
|
|
|
1797 {
|
|
0
|
1798 ngx_http_close_request(r, 0);
|
|
58
|
1799 ngx_http_close_connection(r->connection);
|
|
0
|
1800 }
|
|
|
1801 }
|
|
|
1802 }
|
|
|
1803
|
|
|
1804
|
|
50
|
1805 ngx_int_t
|
|
|
1806 ngx_http_discard_body(ngx_http_request_t *r)
|
|
0
|
1807 {
|
|
|
1808 ssize_t size;
|
|
|
1809 ngx_event_t *rev;
|
|
|
1810
|
|
102
|
1811 if (r->main != r) {
|
|
70
|
1812 return NGX_OK;
|
|
|
1813 }
|
|
|
1814
|
|
0
|
1815 rev = r->connection->read;
|
|
|
1816
|
|
|
1817 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body");
|
|
|
1818
|
|
|
1819 if (rev->timer_set) {
|
|
|
1820 ngx_del_timer(rev);
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 if (r->headers_in.content_length_n <= 0) {
|
|
|
1824 return NGX_OK;
|
|
|
1825 }
|
|
|
1826
|
|
86
|
1827 r->discard_body = 1;
|
|
|
1828
|
|
0
|
1829 size = r->header_in->last - r->header_in->pos;
|
|
|
1830
|
|
|
1831 if (size) {
|
|
|
1832 if (r->headers_in.content_length_n > size) {
|
|
|
1833 r->headers_in.content_length_n -= size;
|
|
|
1834
|
|
|
1835 } else {
|
|
|
1836 r->header_in->pos += r->headers_in.content_length_n;
|
|
|
1837 r->headers_in.content_length_n = 0;
|
|
|
1838 return NGX_OK;
|
|
|
1839 }
|
|
|
1840 }
|
|
|
1841
|
|
58
|
1842 r->read_event_handler = ngx_http_read_discarded_body_handler;
|
|
|
1843
|
|
|
1844 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
1845 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1846 }
|
|
|
1847
|
|
|
1848 return ngx_http_read_discarded_body(r);
|
|
|
1849 }
|
|
|
1850
|
|
|
1851
|
|
50
|
1852 static void
|
|
58
|
1853 ngx_http_read_discarded_body_handler(ngx_http_request_t *r)
|
|
0
|
1854 {
|
|
58
|
1855 ngx_int_t rc;
|
|
0
|
1856
|
|
|
1857 rc = ngx_http_read_discarded_body(r);
|
|
|
1858
|
|
|
1859 if (rc == NGX_AGAIN) {
|
|
58
|
1860 if (ngx_handle_read_event(r->connection->read, 0) == NGX_ERROR) {
|
|
0
|
1861 ngx_http_close_request(r, rc);
|
|
58
|
1862 ngx_http_close_connection(r->connection);
|
|
0
|
1863 return;
|
|
|
1864 }
|
|
|
1865 }
|
|
|
1866
|
|
|
1867 if (rc != NGX_OK) {
|
|
|
1868 ngx_http_close_request(r, rc);
|
|
58
|
1869 ngx_http_close_connection(r->connection);
|
|
0
|
1870 }
|
|
|
1871 }
|
|
|
1872
|
|
|
1873
|
|
50
|
1874 static ngx_int_t
|
|
|
1875 ngx_http_read_discarded_body(ngx_http_request_t *r)
|
|
0
|
1876 {
|
|
|
1877 ssize_t size, n;
|
|
|
1878 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE];
|
|
|
1879
|
|
|
1880 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1881 "http read discarded body");
|
|
|
1882
|
|
|
1883 if (r->headers_in.content_length_n == 0) {
|
|
|
1884 return NGX_OK;
|
|
|
1885 }
|
|
|
1886
|
|
|
1887
|
|
|
1888 size = r->headers_in.content_length_n;
|
|
|
1889
|
|
|
1890 if (size > NGX_HTTP_DISCARD_BUFFER_SIZE) {
|
|
|
1891 size = NGX_HTTP_DISCARD_BUFFER_SIZE;
|
|
|
1892 }
|
|
|
1893
|
|
|
1894 n = r->connection->recv(r->connection, buffer, size);
|
|
|
1895
|
|
|
1896 if (n == NGX_ERROR) {
|
|
|
1897
|
|
76
|
1898 r->connection->closed = 1;
|
|
0
|
1899
|
|
|
1900 /*
|
|
|
1901 * if a client request body is discarded then we already set
|
|
|
1902 * some HTTP response code for client and we can ignore the error
|
|
|
1903 */
|
|
|
1904
|
|
|
1905 return NGX_OK;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 if (n == NGX_AGAIN) {
|
|
|
1909 return NGX_AGAIN;
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 r->headers_in.content_length_n -= n;
|
|
|
1913
|
|
|
1914 return NGX_OK;
|
|
|
1915 }
|
|
|
1916
|
|
|
1917
|
|
50
|
1918 static void
|
|
|
1919 ngx_http_set_keepalive(ngx_http_request_t *r)
|
|
0
|
1920 {
|
|
2
|
1921 int tcp_nodelay;
|
|
0
|
1922 ngx_int_t i;
|
|
|
1923 ngx_buf_t *b, *f;
|
|
|
1924 ngx_event_t *rev, *wev;
|
|
|
1925 ngx_connection_t *c;
|
|
|
1926 ngx_http_connection_t *hc;
|
|
|
1927 ngx_http_core_srv_conf_t *cscf;
|
|
|
1928 ngx_http_core_loc_conf_t *clcf;
|
|
|
1929
|
|
|
1930 c = r->connection;
|
|
|
1931 rev = c->read;
|
|
|
1932
|
|
|
1933 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "set http keepalive handler");
|
|
|
1934
|
|
32
|
1935 c->log->action = "closing request";
|
|
0
|
1936
|
|
|
1937 hc = r->http_connection;
|
|
|
1938 b = r->header_in;
|
|
|
1939
|
|
|
1940 if (b->pos < b->last) {
|
|
|
1941
|
|
|
1942 /* the pipelined request */
|
|
|
1943
|
|
|
1944 if (b != c->buffer) {
|
|
|
1945
|
|
4
|
1946 /*
|
|
|
1947 * If the large header buffers were allocated while the previous
|
|
|
1948 * request processing then we do not use c->buffer for
|
|
|
1949 * the pipelined request (see ngx_http_init_request()).
|
|
|
1950 *
|
|
|
1951 * Now we would move the large header buffers to the free list.
|
|
|
1952 */
|
|
0
|
1953
|
|
|
1954 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
|
1955
|
|
|
1956 if (hc->free == NULL) {
|
|
|
1957 hc->free = ngx_palloc(c->pool,
|
|
|
1958 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
|
1959
|
|
|
1960 if (hc->free == NULL) {
|
|
26
|
1961 ngx_http_close_request(r, 0);
|
|
0
|
1962 ngx_http_close_connection(c);
|
|
|
1963 return;
|
|
|
1964 }
|
|
|
1965 }
|
|
|
1966
|
|
|
1967 for (i = 0; i < hc->nbusy - 1; i++) {
|
|
|
1968 f = hc->busy[i];
|
|
|
1969 hc->free[hc->nfree++] = f;
|
|
|
1970 f->pos = f->start;
|
|
|
1971 f->last = f->start;
|
|
|
1972 }
|
|
|
1973
|
|
|
1974 hc->busy[0] = b;
|
|
|
1975 hc->nbusy = 1;
|
|
|
1976 }
|
|
|
1977 }
|
|
|
1978
|
|
26
|
1979 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1980
|
|
0
|
1981 ngx_http_close_request(r, 0);
|
|
|
1982 c->data = hc;
|
|
|
1983
|
|
|
1984 ngx_add_timer(rev, clcf->keepalive_timeout);
|
|
|
1985
|
|
58
|
1986 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
1987 ngx_http_close_connection(c);
|
|
|
1988 return;
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 wev = c->write;
|
|
58
|
1992 wev->handler = ngx_http_empty_handler;
|
|
0
|
1993
|
|
|
1994 if (b->pos < b->last) {
|
|
|
1995
|
|
|
1996 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "pipelined request");
|
|
|
1997
|
|
|
1998 hc->pipeline = 1;
|
|
32
|
1999 c->log->action = "reading client pipelined request line";
|
|
0
|
2000 ngx_http_init_request(rev);
|
|
|
2001 return;
|
|
|
2002 }
|
|
|
2003
|
|
|
2004 hc->pipeline = 0;
|
|
|
2005
|
|
4
|
2006 /*
|
|
|
2007 * To keep a memory footprint as small as possible for an idle
|
|
|
2008 * keepalive connection we try to free the ngx_http_request_t and
|
|
|
2009 * c->buffer's memory if they were allocated outside the c->pool.
|
|
|
2010 * The large header buffers are always allocated outside the c->pool and
|
|
|
2011 * are freed too.
|
|
|
2012 */
|
|
|
2013
|
|
0
|
2014 if (ngx_pfree(c->pool, r) == NGX_OK) {
|
|
|
2015 hc->request = NULL;
|
|
|
2016 }
|
|
|
2017
|
|
|
2018 b = c->buffer;
|
|
|
2019
|
|
|
2020 if (ngx_pfree(c->pool, b->start) == NGX_OK) {
|
|
4
|
2021
|
|
|
2022 /*
|
|
|
2023 * the special note for ngx_http_keepalive_handler() that
|
|
|
2024 * c->buffer's memory was freed
|
|
|
2025 */
|
|
|
2026
|
|
0
|
2027 b->pos = NULL;
|
|
|
2028
|
|
|
2029 } else {
|
|
|
2030 b->pos = b->start;
|
|
|
2031 b->last = b->start;
|
|
|
2032 }
|
|
|
2033
|
|
10
|
2034 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc free: %p %d",
|
|
0
|
2035 hc->free, hc->nfree);
|
|
|
2036
|
|
|
2037 if (hc->free) {
|
|
|
2038 for (i = 0; i < hc->nfree; i++) {
|
|
|
2039 ngx_pfree(c->pool, hc->free[i]);
|
|
|
2040 hc->free[i] = NULL;
|
|
|
2041 }
|
|
|
2042
|
|
|
2043 hc->nfree = 0;
|
|
|
2044 }
|
|
|
2045
|
|
10
|
2046 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc busy: %p %d",
|
|
0
|
2047 hc->busy, hc->nbusy);
|
|
|
2048
|
|
|
2049 if (hc->busy) {
|
|
|
2050 for (i = 0; i < hc->nbusy; i++) {
|
|
|
2051 ngx_pfree(c->pool, hc->busy[i]);
|
|
|
2052 hc->busy[i] = NULL;
|
|
|
2053 }
|
|
|
2054
|
|
|
2055 hc->nbusy = 0;
|
|
|
2056 }
|
|
|
2057
|
|
58
|
2058 rev->handler = ngx_http_keepalive_handler;
|
|
0
|
2059
|
|
|
2060 if (wev->active) {
|
|
4
|
2061 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2062 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
2063 == NGX_ERROR)
|
|
|
2064 {
|
|
|
2065 ngx_http_close_connection(c);
|
|
|
2066 return;
|
|
|
2067 }
|
|
|
2068
|
|
|
2069 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
2070 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
|
2071 ngx_http_close_connection(c);
|
|
|
2072 return;
|
|
|
2073 }
|
|
|
2074 }
|
|
|
2075 }
|
|
|
2076
|
|
32
|
2077 c->log->action = "keepalive";
|
|
0
|
2078
|
|
|
2079 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
50
|
2080 if (ngx_tcp_push(c->fd) == -1) {
|
|
0
|
2081 ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed");
|
|
|
2082 ngx_http_close_connection(c);
|
|
|
2083 return;
|
|
|
2084 }
|
|
2
|
2085
|
|
0
|
2086 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
22
|
2087 tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0;
|
|
2
|
2088
|
|
|
2089 } else {
|
|
22
|
2090 tcp_nodelay = 1;
|
|
|
2091 }
|
|
|
2092
|
|
32
|
2093 if (tcp_nodelay
|
|
|
2094 && clcf->tcp_nodelay
|
|
|
2095 && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET)
|
|
|
2096 {
|
|
22
|
2097 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
2098
|
|
|
2099 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
2100 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
2101 {
|
|
|
2102 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2103 "setsockopt(TCP_NODELAY) failed");
|
|
|
2104 ngx_http_close_connection(c);
|
|
|
2105 return;
|
|
2
|
2106 }
|
|
22
|
2107
|
|
32
|
2108 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
0
|
2109 }
|
|
|
2110
|
|
|
2111 #if 0
|
|
4
|
2112 /* if ngx_http_request_t was freed then we need some other place */
|
|
0
|
2113 r->http_state = NGX_HTTP_KEEPALIVE_STATE;
|
|
|
2114 #endif
|
|
|
2115
|
|
|
2116 if (rev->ready) {
|
|
|
2117 ngx_http_keepalive_handler(rev);
|
|
|
2118 }
|
|
|
2119 }
|
|
|
2120
|
|
|
2121
|
|
50
|
2122 static void
|
|
|
2123 ngx_http_keepalive_handler(ngx_event_t *rev)
|
|
0
|
2124 {
|
|
50
|
2125 size_t size;
|
|
|
2126 ssize_t n;
|
|
|
2127 ngx_buf_t *b;
|
|
|
2128 ngx_connection_t *c;
|
|
0
|
2129
|
|
|
2130 c = rev->data;
|
|
|
2131
|
|
|
2132 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http keepalive handler");
|
|
|
2133
|
|
|
2134 if (rev->timedout) {
|
|
|
2135 ngx_http_close_connection(c);
|
|
|
2136 return;
|
|
|
2137 }
|
|
|
2138
|
|
18
|
2139 #if (NGX_HAVE_KQUEUE)
|
|
0
|
2140
|
|
4
|
2141 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2142 if (rev->pending_eof) {
|
|
32
|
2143 c->log->handler = NULL;
|
|
0
|
2144 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
|
|
10
|
2145 "kevent() reported that client %V closed "
|
|
32
|
2146 "keepalive connection", &c->addr_text);
|
|
22
|
2147 #if (NGX_HTTP_SSL)
|
|
|
2148 if (c->ssl) {
|
|
96
|
2149 c->ssl->no_send_shutdown = 1;
|
|
22
|
2150 }
|
|
|
2151 #endif
|
|
0
|
2152 ngx_http_close_connection(c);
|
|
|
2153 return;
|
|
|
2154 }
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 #endif
|
|
|
2158
|
|
|
2159 b = c->buffer;
|
|
|
2160 size = b->end - b->start;
|
|
|
2161
|
|
|
2162 if (b->pos == NULL) {
|
|
4
|
2163
|
|
|
2164 /*
|
|
|
2165 * The c->buffer's memory was freed by ngx_http_set_keepalive().
|
|
|
2166 * However, the c->buffer->start and c->buffer->end were not changed
|
|
|
2167 * to keep the buffer size.
|
|
|
2168 */
|
|
|
2169
|
|
50
|
2170 b->pos = ngx_palloc(c->pool, size);
|
|
|
2171 if (b->pos == NULL) {
|
|
0
|
2172 ngx_http_close_connection(c);
|
|
|
2173 return;
|
|
|
2174 }
|
|
|
2175
|
|
|
2176 b->start = b->pos;
|
|
|
2177 b->last = b->pos;
|
|
|
2178 b->end = b->pos + size;
|
|
|
2179 }
|
|
|
2180
|
|
|
2181 /*
|
|
|
2182 * MSIE closes a keepalive connection with RST flag
|
|
|
2183 * so we ignore ECONNRESET here.
|
|
|
2184 */
|
|
|
2185
|
|
|
2186 c->log_error = NGX_ERROR_IGNORE_ECONNRESET;
|
|
|
2187 ngx_set_socket_errno(0);
|
|
|
2188
|
|
|
2189 n = c->recv(c, b->last, size);
|
|
|
2190 c->log_error = NGX_ERROR_INFO;
|
|
|
2191
|
|
|
2192 if (n == NGX_AGAIN) {
|
|
58
|
2193 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
24
|
2194 ngx_http_close_connection(c);
|
|
|
2195 }
|
|
|
2196
|
|
0
|
2197 return;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 if (n == NGX_ERROR) {
|
|
|
2201 ngx_http_close_connection(c);
|
|
|
2202 return;
|
|
|
2203 }
|
|
|
2204
|
|
32
|
2205 c->log->handler = NULL;
|
|
0
|
2206
|
|
|
2207 if (n == 0) {
|
|
|
2208 ngx_log_error(NGX_LOG_INFO, c->log, ngx_socket_errno,
|
|
32
|
2209 "client %V closed keepalive connection", &c->addr_text);
|
|
0
|
2210 ngx_http_close_connection(c);
|
|
|
2211 return;
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 b->last += n;
|
|
32
|
2215
|
|
|
2216 c->log->handler = ngx_http_log_error;
|
|
|
2217 c->log->action = "reading client request line";
|
|
0
|
2218
|
|
|
2219 ngx_http_init_request(rev);
|
|
|
2220 }
|
|
|
2221
|
|
|
2222
|
|
50
|
2223 static void
|
|
|
2224 ngx_http_set_lingering_close(ngx_http_request_t *r)
|
|
0
|
2225 {
|
|
|
2226 ngx_event_t *rev, *wev;
|
|
|
2227 ngx_connection_t *c;
|
|
|
2228 ngx_http_core_loc_conf_t *clcf;
|
|
|
2229
|
|
|
2230 c = r->connection;
|
|
|
2231
|
|
|
2232 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2233
|
|
|
2234 rev = c->read;
|
|
58
|
2235 rev->handler = ngx_http_lingering_close_handler;
|
|
0
|
2236
|
|
106
|
2237 r->lingering_time = ngx_time() + (time_t) (clcf->lingering_time / 1000);
|
|
0
|
2238 ngx_add_timer(rev, clcf->lingering_timeout);
|
|
|
2239
|
|
58
|
2240 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
0
|
2241 ngx_http_close_request(r, 0);
|
|
|
2242 ngx_http_close_connection(c);
|
|
|
2243 return;
|
|
|
2244 }
|
|
|
2245
|
|
|
2246 wev = c->write;
|
|
58
|
2247 wev->handler = ngx_http_empty_handler;
|
|
0
|
2248
|
|
|
2249 if (wev->active) {
|
|
4
|
2250 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
0
|
2251 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
|
2252 == NGX_ERROR)
|
|
|
2253 {
|
|
26
|
2254 ngx_http_close_request(r, 0);
|
|
0
|
2255 ngx_http_close_connection(c);
|
|
|
2256 return;
|
|
|
2257 }
|
|
|
2258
|
|
|
2259 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
|
2260 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
26
|
2261 ngx_http_close_request(r, 0);
|
|
0
|
2262 ngx_http_close_connection(c);
|
|
|
2263 return;
|
|
|
2264 }
|
|
|
2265 }
|
|
|
2266 }
|
|
|
2267
|
|
|
2268 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
2269 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2270 ngx_shutdown_socket_n " failed");
|
|
|
2271 ngx_http_close_request(r, 0);
|
|
|
2272 ngx_http_close_connection(c);
|
|
|
2273 return;
|
|
|
2274 }
|
|
|
2275
|
|
|
2276 if (rev->ready) {
|
|
|
2277 ngx_http_lingering_close_handler(rev);
|
|
|
2278 }
|
|
|
2279 }
|
|
|
2280
|
|
|
2281
|
|
50
|
2282 static void
|
|
|
2283 ngx_http_lingering_close_handler(ngx_event_t *rev)
|
|
0
|
2284 {
|
|
|
2285 ssize_t n;
|
|
|
2286 ngx_msec_t timer;
|
|
|
2287 ngx_connection_t *c;
|
|
|
2288 ngx_http_request_t *r;
|
|
|
2289 ngx_http_core_loc_conf_t *clcf;
|
|
|
2290 u_char buffer[NGX_HTTP_LINGERING_BUFFER_SIZE];
|
|
|
2291
|
|
|
2292 c = rev->data;
|
|
|
2293 r = c->data;
|
|
|
2294
|
|
|
2295 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2296 "http lingering close handler");
|
|
|
2297
|
|
|
2298 if (rev->timedout) {
|
|
|
2299 ngx_http_close_request(r, 0);
|
|
|
2300 ngx_http_close_connection(c);
|
|
|
2301 return;
|
|
|
2302 }
|
|
|
2303
|
|
|
2304 timer = r->lingering_time - ngx_time();
|
|
|
2305 if (timer <= 0) {
|
|
|
2306 ngx_http_close_request(r, 0);
|
|
|
2307 ngx_http_close_connection(c);
|
|
|
2308 return;
|
|
|
2309 }
|
|
|
2310
|
|
|
2311 do {
|
|
|
2312 n = c->recv(c, buffer, NGX_HTTP_LINGERING_BUFFER_SIZE);
|
|
|
2313
|
|
|
2314 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "lingering read: %d", n);
|
|
|
2315
|
|
|
2316 if (n == NGX_ERROR || n == 0) {
|
|
|
2317 ngx_http_close_request(r, 0);
|
|
|
2318 ngx_http_close_connection(c);
|
|
|
2319 return;
|
|
|
2320 }
|
|
|
2321
|
|
|
2322 } while (rev->ready);
|
|
|
2323
|
|
58
|
2324 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
26
|
2325 ngx_http_close_request(r, 0);
|
|
24
|
2326 ngx_http_close_connection(c);
|
|
|
2327 return;
|
|
|
2328 }
|
|
|
2329
|
|
0
|
2330 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2331
|
|
|
2332 timer *= 1000;
|
|
|
2333
|
|
|
2334 if (timer > clcf->lingering_timeout) {
|
|
|
2335 timer = clcf->lingering_timeout;
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 ngx_add_timer(rev, timer);
|
|
|
2339 }
|
|
|
2340
|
|
|
2341
|
|
50
|
2342 void
|
|
|
2343 ngx_http_empty_handler(ngx_event_t *wev)
|
|
0
|
2344 {
|
|
|
2345 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http empty handler");
|
|
|
2346
|
|
|
2347 return;
|
|
|
2348 }
|
|
|
2349
|
|
|
2350
|
|
58
|
2351 void
|
|
|
2352 ngx_http_request_empty_handler(ngx_http_request_t *r)
|
|
|
2353 {
|
|
|
2354 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2355 "http requets empty handler");
|
|
|
2356
|
|
|
2357 return;
|
|
|
2358 }
|
|
|
2359
|
|
|
2360
|
|
50
|
2361 ngx_int_t
|
|
|
2362 ngx_http_send_last(ngx_http_request_t *r)
|
|
0
|
2363 {
|
|
|
2364 ngx_buf_t *b;
|
|
|
2365 ngx_chain_t out;
|
|
|
2366
|
|
50
|
2367 b = ngx_calloc_buf(r->pool);
|
|
|
2368 if (b == NULL) {
|
|
0
|
2369 return NGX_ERROR;
|
|
|
2370 }
|
|
|
2371
|
|
|
2372 b->last_buf = 1;
|
|
|
2373 out.buf = b;
|
|
|
2374 out.next = NULL;
|
|
|
2375
|
|
|
2376 return ngx_http_output_filter(r, &out);
|
|
|
2377 }
|
|
|
2378
|
|
|
2379
|
|
50
|
2380 void
|
|
58
|
2381 ngx_http_close_request(ngx_http_request_t *r, ngx_int_t error)
|
|
0
|
2382 {
|
|
|
2383 ngx_log_t *log;
|
|
58
|
2384 struct linger linger;
|
|
0
|
2385 ngx_http_log_ctx_t *ctx;
|
|
|
2386 ngx_http_core_loc_conf_t *clcf;
|
|
|
2387
|
|
|
2388 log = r->connection->log;
|
|
|
2389
|
|
|
2390 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http close request");
|
|
|
2391
|
|
|
2392 if (r->pool == NULL) {
|
|
80
|
2393 ngx_log_error(NGX_LOG_ALERT, log, 0, "http request already closed");
|
|
0
|
2394 return;
|
|
|
2395 }
|
|
|
2396
|
|
|
2397 #if (NGX_STAT_STUB)
|
|
|
2398 if (r->stat_reading) {
|
|
110
|
2399 ngx_atomic_fetch_add(ngx_stat_reading, -1);
|
|
0
|
2400 }
|
|
|
2401
|
|
|
2402 if (r->stat_writing) {
|
|
110
|
2403 ngx_atomic_fetch_add(ngx_stat_writing, -1);
|
|
0
|
2404 }
|
|
|
2405 #endif
|
|
|
2406
|
|
|
2407 if (error && r->headers_out.status == 0) {
|
|
|
2408 r->headers_out.status = error;
|
|
|
2409 }
|
|
|
2410
|
|
|
2411 ngx_http_log_handler(r);
|
|
|
2412
|
|
|
2413 if (r->connection->timedout) {
|
|
|
2414 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2415
|
|
|
2416 if (clcf->reset_timedout_connection) {
|
|
58
|
2417 linger.l_onoff = 1;
|
|
|
2418 linger.l_linger = 0;
|
|
0
|
2419
|
|
|
2420 if (setsockopt(r->connection->fd, SOL_SOCKET, SO_LINGER,
|
|
58
|
2421 (const void *) &linger, sizeof(struct linger)) == -1)
|
|
0
|
2422 {
|
|
|
2423 ngx_log_error(NGX_LOG_ALERT, log, ngx_socket_errno,
|
|
|
2424 "setsockopt(SO_LINGER) failed");
|
|
|
2425 }
|
|
|
2426 }
|
|
|
2427 }
|
|
|
2428
|
|
58
|
2429 /* the various request strings were allocated from r->pool */
|
|
0
|
2430 ctx = log->data;
|
|
10
|
2431 ctx->request = NULL;
|
|
0
|
2432
|
|
|
2433 r->request_line.len = 0;
|
|
|
2434
|
|
|
2435 ngx_destroy_pool(r->pool);
|
|
|
2436 }
|
|
|
2437
|
|
|
2438
|
|
80
|
2439 static void
|
|
50
|
2440 ngx_http_close_connection(ngx_connection_t *c)
|
|
0
|
2441 {
|
|
28
|
2442 ngx_pool_t *pool;
|
|
|
2443
|
|
0
|
2444 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2445 "close http connection: %d", c->fd);
|
|
|
2446
|
|
88
|
2447 #if (NGX_HTTP_SSL)
|
|
2
|
2448
|
|
|
2449 if (c->ssl) {
|
|
|
2450 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
80
|
2451 c->read->handler = ngx_http_ssl_close_handler;
|
|
|
2452 c->write->handler = ngx_http_ssl_close_handler;
|
|
2
|
2453 return;
|
|
|
2454 }
|
|
|
2455 }
|
|
|
2456
|
|
|
2457 #endif
|
|
|
2458
|
|
0
|
2459 #if (NGX_STAT_STUB)
|
|
110
|
2460 ngx_atomic_fetch_add(ngx_stat_active, -1);
|
|
0
|
2461 #endif
|
|
|
2462
|
|
28
|
2463 pool = c->pool;
|
|
|
2464
|
|
0
|
2465 ngx_close_connection(c);
|
|
28
|
2466
|
|
50
|
2467 ngx_destroy_pool(pool);
|
|
0
|
2468 }
|
|
|
2469
|
|
|
2470
|
|
88
|
2471 #if (NGX_HTTP_SSL)
|
|
|
2472
|
|
|
2473 static void
|
|
|
2474 ngx_http_ssl_close_handler(ngx_event_t *ev)
|
|
|
2475 {
|
|
|
2476 ngx_connection_t *c;
|
|
|
2477
|
|
|
2478 c = ev->data;
|
|
|
2479
|
|
|
2480 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "http ssl close handler");
|
|
|
2481
|
|
|
2482 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
|
2483 return;
|
|
|
2484 }
|
|
|
2485
|
|
|
2486 ngx_http_close_connection(c);
|
|
|
2487 }
|
|
|
2488
|
|
|
2489 #endif
|
|
|
2490
|
|
|
2491
|
|
50
|
2492 static u_char *
|
|
|
2493 ngx_http_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
0
|
2494 {
|
|
32
|
2495 u_char *p;
|
|
54
|
2496 ngx_http_request_t *r;
|
|
32
|
2497 ngx_http_log_ctx_t *ctx;
|
|
10
|
2498
|
|
32
|
2499 if (log->action) {
|
|
58
|
2500 p = ngx_snprintf(buf, len, " while %s", log->action);
|
|
10
|
2501 len -= p - buf;
|
|
54
|
2502 buf = p;
|
|
10
|
2503 }
|
|
|
2504
|
|
58
|
2505 ctx = log->data;
|
|
|
2506
|
|
54
|
2507 p = ngx_snprintf(buf, len, ", client: %V", ctx->client);
|
|
58
|
2508 len -= p - buf;
|
|
54
|
2509
|
|
|
2510 r = ctx->request;
|
|
|
2511
|
|
58
|
2512 if (r) {
|
|
|
2513 return r->log_handler(r, p, len);
|
|
0
|
2514 }
|
|
10
|
2515
|
|
58
|
2516 return p;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519
|
|
|
2520 static u_char *
|
|
|
2521 ngx_http_log_error_handler(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
|
2522 {
|
|
|
2523 u_char *p;
|
|
54
|
2524
|
|
|
2525 if (r->server_name.data) {
|
|
|
2526 p = ngx_snprintf(buf, len, ", server: %V", &r->server_name);
|
|
52
|
2527 len -= p - buf;
|
|
54
|
2528 buf = p;
|
|
52
|
2529 }
|
|
|
2530
|
|
54
|
2531 if (r->unparsed_uri.data) {
|
|
|
2532 p = ngx_snprintf(buf, len, ", URL: \"%V\"", &r->unparsed_uri);
|
|
|
2533 len -= p - buf;
|
|
|
2534 buf = p;
|
|
|
2535
|
|
|
2536 } else {
|
|
|
2537 if (r->request_line.data == NULL && r->request_start) {
|
|
|
2538 for (p = r->request_start; p < r->header_in->last; p++) {
|
|
|
2539 if (*p == CR || *p == LF) {
|
|
|
2540 break;
|
|
|
2541 }
|
|
|
2542 }
|
|
|
2543
|
|
|
2544 r->request_line.len = p - r->request_start;
|
|
|
2545 r->request_line.data = r->request_start;
|
|
|
2546 }
|
|
|
2547
|
|
|
2548 if (r->request_line.len) {
|
|
|
2549 p = ngx_snprintf(buf, len, ", request: \"%V\"", &r->request_line);
|
|
|
2550 len -= p - buf;
|
|
|
2551 buf = p;
|
|
|
2552 }
|
|
10
|
2553 }
|
|
|
2554
|
|
54
|
2555 return ngx_http_log_error_info(r, buf, len);
|
|
0
|
2556 }
|
|
54
|
2557
|
|
|
2558
|
|
|
2559 u_char *
|
|
|
2560 ngx_http_log_error_info(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
|
2561 {
|
|
|
2562 u_char *p;
|
|
|
2563
|
|
|
2564 if (r->headers_in.host) {
|
|
|
2565 p = ngx_snprintf(buf, len, ", host: \"%V\"",
|
|
|
2566 &r->headers_in.host->value);
|
|
|
2567 len -= p - buf;
|
|
|
2568 buf = p;
|
|
|
2569 }
|
|
|
2570
|
|
|
2571 if (r->headers_in.referer) {
|
|
|
2572 p = ngx_snprintf(buf, len, ", referrer: \"%V\"",
|
|
|
2573 &r->headers_in.referer->value);
|
|
|
2574 buf = p;
|
|
|
2575 }
|
|
|
2576
|
|
|
2577 return buf;
|
|
|
2578 }
|
