|
50
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_http.h>
|
|
|
10
|
|
|
11
|
|
230
|
12 static ngx_int_t ngx_http_chunked_filter_init(ngx_conf_t *cf);
|
|
50
|
13
|
|
|
14
|
|
|
15 static ngx_http_module_t ngx_http_chunked_filter_module_ctx = {
|
|
58
|
16 NULL, /* preconfiguration */
|
|
230
|
17 ngx_http_chunked_filter_init, /* postconfiguration */
|
|
50
|
18
|
|
|
19 NULL, /* create main configuration */
|
|
|
20 NULL, /* init main configuration */
|
|
|
21
|
|
|
22 NULL, /* create server configuration */
|
|
|
23 NULL, /* merge server configuration */
|
|
|
24
|
|
|
25 NULL, /* create location configuration */
|
|
178
|
26 NULL /* merge location configuration */
|
|
50
|
27 };
|
|
|
28
|
|
|
29
|
|
|
30 ngx_module_t ngx_http_chunked_filter_module = {
|
|
58
|
31 NGX_MODULE_V1,
|
|
50
|
32 &ngx_http_chunked_filter_module_ctx, /* module context */
|
|
|
33 NULL, /* module directives */
|
|
|
34 NGX_HTTP_MODULE, /* module type */
|
|
90
|
35 NULL, /* init master */
|
|
230
|
36 NULL, /* init module */
|
|
90
|
37 NULL, /* init process */
|
|
|
38 NULL, /* init thread */
|
|
|
39 NULL, /* exit thread */
|
|
|
40 NULL, /* exit process */
|
|
|
41 NULL, /* exit master */
|
|
|
42 NGX_MODULE_V1_PADDING
|
|
50
|
43 };
|
|
|
44
|
|
|
45
|
|
|
46 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
|
|
|
47 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
|
|
|
48
|
|
|
49
|
|
|
50 static ngx_int_t
|
|
|
51 ngx_http_chunked_header_filter(ngx_http_request_t *r)
|
|
|
52 {
|
|
566
|
53 ngx_http_core_loc_conf_t *clcf;
|
|
|
54
|
|
164
|
55 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED
|
|
|
56 || r->headers_out.status == NGX_HTTP_NO_CONTENT
|
|
412
|
57 || r != r->main
|
|
|
58 || (r->method & NGX_HTTP_HEAD))
|
|
164
|
59 {
|
|
50
|
60 return ngx_http_next_header_filter(r);
|
|
|
61 }
|
|
|
62
|
|
|
63 if (r->headers_out.content_length_n == -1) {
|
|
|
64 if (r->http_version < NGX_HTTP_VERSION_11) {
|
|
|
65 r->keepalive = 0;
|
|
|
66
|
|
|
67 } else {
|
|
566
|
68 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
69
|
|
|
70 if (clcf->chunked_transfer_encoding) {
|
|
|
71 r->chunked = 1;
|
|
|
72
|
|
|
73 } else {
|
|
|
74 r->keepalive = 0;
|
|
|
75 }
|
|
50
|
76 }
|
|
|
77 }
|
|
|
78
|
|
|
79 return ngx_http_next_header_filter(r);
|
|
|
80 }
|
|
|
81
|
|
|
82
|
|
|
83 static ngx_int_t
|
|
|
84 ngx_http_chunked_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
|
85 {
|
|
|
86 u_char *chunk;
|
|
|
87 off_t size;
|
|
|
88 ngx_buf_t *b;
|
|
|
89 ngx_chain_t out, tail, *cl, *tl, **ll;
|
|
|
90
|
|
|
91 if (in == NULL || !r->chunked || r->header_only) {
|
|
|
92 return ngx_http_next_body_filter(r, in);
|
|
|
93 }
|
|
|
94
|
|
|
95 out.buf = NULL;
|
|
|
96 ll = &out.next;
|
|
|
97
|
|
|
98 size = 0;
|
|
|
99 cl = in;
|
|
|
100
|
|
|
101 for ( ;; ) {
|
|
|
102 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
103 "http chunk: %d", ngx_buf_size(cl->buf));
|
|
|
104
|
|
|
105 size += ngx_buf_size(cl->buf);
|
|
|
106
|
|
216
|
107 if (cl->buf->flush
|
|
|
108 || cl->buf->sync
|
|
|
109 || ngx_buf_in_memory(cl->buf)
|
|
|
110 || cl->buf->in_file)
|
|
|
111 {
|
|
50
|
112 tl = ngx_alloc_chain_link(r->pool);
|
|
|
113 if (tl == NULL) {
|
|
|
114 return NGX_ERROR;
|
|
|
115 }
|
|
|
116
|
|
|
117 tl->buf = cl->buf;
|
|
|
118 *ll = tl;
|
|
|
119 ll = &tl->next;
|
|
|
120 }
|
|
|
121
|
|
|
122 if (cl->next == NULL) {
|
|
|
123 break;
|
|
|
124 }
|
|
|
125
|
|
|
126 cl = cl->next;
|
|
|
127 }
|
|
|
128
|
|
|
129 if (size) {
|
|
|
130 b = ngx_calloc_buf(r->pool);
|
|
|
131 if (b == NULL) {
|
|
|
132 return NGX_ERROR;
|
|
|
133 }
|
|
|
134
|
|
|
135 /* the "0000000000000000" is 64-bit hexadimal string */
|
|
|
136
|
|
|
137 chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1);
|
|
|
138 if (chunk == NULL) {
|
|
|
139 return NGX_ERROR;
|
|
|
140 }
|
|
|
141
|
|
|
142 b->temporary = 1;
|
|
|
143 b->pos = chunk;
|
|
|
144 b->last = ngx_sprintf(chunk, "%xO" CRLF, size);
|
|
|
145
|
|
|
146 out.buf = b;
|
|
|
147 }
|
|
|
148
|
|
|
149 if (cl->buf->last_buf) {
|
|
|
150 b = ngx_calloc_buf(r->pool);
|
|
|
151 if (b == NULL) {
|
|
|
152 return NGX_ERROR;
|
|
|
153 }
|
|
|
154
|
|
|
155 b->memory = 1;
|
|
|
156 b->last_buf = 1;
|
|
|
157 b->pos = (u_char *) CRLF "0" CRLF CRLF;
|
|
|
158 b->last = b->pos + 7;
|
|
|
159
|
|
|
160 cl->buf->last_buf = 0;
|
|
|
161
|
|
|
162 if (size == 0) {
|
|
|
163 b->pos += 2;
|
|
|
164 out.buf = b;
|
|
|
165 out.next = NULL;
|
|
|
166
|
|
|
167 return ngx_http_next_body_filter(r, &out);
|
|
|
168 }
|
|
|
169
|
|
|
170 } else {
|
|
|
171 if (size == 0) {
|
|
|
172 *ll = NULL;
|
|
|
173 return ngx_http_next_body_filter(r, out.next);
|
|
|
174 }
|
|
|
175
|
|
|
176 b = ngx_calloc_buf(r->pool);
|
|
|
177 if (b == NULL) {
|
|
|
178 return NGX_ERROR;
|
|
|
179 }
|
|
|
180
|
|
|
181 b->memory = 1;
|
|
|
182 b->pos = (u_char *) CRLF;
|
|
|
183 b->last = b->pos + 2;
|
|
|
184 }
|
|
|
185
|
|
|
186 tail.buf = b;
|
|
|
187 tail.next = NULL;
|
|
|
188 *ll = &tail;
|
|
|
189
|
|
|
190 return ngx_http_next_body_filter(r, &out);
|
|
|
191 }
|
|
|
192
|
|
|
193
|
|
|
194 static ngx_int_t
|
|
230
|
195 ngx_http_chunked_filter_init(ngx_conf_t *cf)
|
|
50
|
196 {
|
|
|
197 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
198 ngx_http_top_header_filter = ngx_http_chunked_header_filter;
|
|
|
199
|
|
|
200 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
201 ngx_http_top_body_filter = ngx_http_chunked_body_filter;
|
|
|
202
|
|
|
203 return NGX_OK;
|
|
|
204 }
|
