|
0
|
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
|
|
|
12 static ngx_int_t ngx_http_chunked_filter_init(ngx_cycle_t *cycle);
|
|
|
13
|
|
|
14
|
|
|
15 static ngx_http_module_t ngx_http_chunked_filter_module_ctx = {
|
|
|
16 NULL, /* pre conf */
|
|
|
17
|
|
|
18 NULL, /* create main configuration */
|
|
|
19 NULL, /* init main configuration */
|
|
|
20
|
|
|
21 NULL, /* create server configuration */
|
|
|
22 NULL, /* merge server configuration */
|
|
|
23
|
|
|
24 NULL, /* create location configuration */
|
|
|
25 NULL, /* merge location configuration */
|
|
|
26 };
|
|
|
27
|
|
|
28
|
|
|
29 ngx_module_t ngx_http_chunked_filter_module = {
|
|
|
30 NGX_MODULE,
|
|
|
31 &ngx_http_chunked_filter_module_ctx, /* module context */
|
|
|
32 NULL, /* module directives */
|
|
|
33 NGX_HTTP_MODULE, /* module type */
|
|
|
34 ngx_http_chunked_filter_init, /* init module */
|
|
10
|
35 NULL /* init process */
|
|
0
|
36 };
|
|
|
37
|
|
|
38
|
|
|
39 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
|
|
|
40 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
|
|
|
41
|
|
|
42
|
|
|
43 static ngx_int_t ngx_http_chunked_header_filter(ngx_http_request_t *r)
|
|
|
44 {
|
|
|
45 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
|
|
|
46 return ngx_http_next_header_filter(r);
|
|
|
47 }
|
|
|
48
|
|
|
49 if (r->headers_out.content_length_n == -1) {
|
|
|
50 if (r->http_version < NGX_HTTP_VERSION_11) {
|
|
|
51 r->keepalive = 0;
|
|
|
52
|
|
|
53 } else {
|
|
|
54 r->chunked = 1;
|
|
|
55 }
|
|
|
56 }
|
|
|
57
|
|
|
58 return ngx_http_next_header_filter(r);
|
|
|
59 }
|
|
|
60
|
|
|
61
|
|
|
62 static ngx_int_t ngx_http_chunked_body_filter(ngx_http_request_t *r,
|
|
|
63 ngx_chain_t *in)
|
|
|
64 {
|
|
|
65 u_char *chunk;
|
|
22
|
66 off_t size;
|
|
0
|
67 ngx_buf_t *b;
|
|
|
68 ngx_chain_t out, tail, *cl, *tl, **ll;
|
|
|
69
|
|
32
|
70 if (in == NULL || !r->chunked || r->header_only) {
|
|
0
|
71 return ngx_http_next_body_filter(r, in);
|
|
|
72 }
|
|
|
73
|
|
|
74 out.buf = NULL;
|
|
|
75 ll = &out.next;
|
|
|
76
|
|
|
77 size = 0;
|
|
|
78 cl = in;
|
|
|
79
|
|
|
80 for ( ;; ) {
|
|
|
81 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
82 "http chunk: %d", ngx_buf_size(cl->buf));
|
|
|
83
|
|
|
84 size += ngx_buf_size(cl->buf);
|
|
|
85
|
|
2
|
86 if (cl->buf->flush || ngx_buf_in_memory(cl->buf) || cl->buf->in_file) {
|
|
10
|
87
|
|
|
88 if (!(tl = ngx_alloc_chain_link(r->pool))) {
|
|
|
89 return NGX_ERROR;
|
|
|
90 }
|
|
|
91
|
|
2
|
92 tl->buf = cl->buf;
|
|
|
93 *ll = tl;
|
|
|
94 ll = &tl->next;
|
|
|
95 }
|
|
0
|
96
|
|
|
97 if (cl->next == NULL) {
|
|
|
98 break;
|
|
|
99 }
|
|
|
100
|
|
|
101 cl = cl->next;
|
|
|
102 }
|
|
|
103
|
|
|
104 if (size) {
|
|
4
|
105 if (!(b = ngx_calloc_buf(r->pool))) {
|
|
|
106 return NGX_ERROR;
|
|
|
107 }
|
|
|
108
|
|
22
|
109 chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1);
|
|
|
110 if (chunk == NULL) {
|
|
4
|
111 return NGX_ERROR;
|
|
|
112 }
|
|
|
113
|
|
|
114 b->temporary = 1;
|
|
|
115 b->pos = chunk;
|
|
22
|
116 b->last = ngx_sprintf(chunk, "%xO" CRLF, size);
|
|
4
|
117
|
|
|
118 out.buf = b;
|
|
0
|
119 }
|
|
|
120
|
|
|
121 if (cl->buf->last_buf) {
|
|
10
|
122 if (!(b = ngx_calloc_buf(r->pool))) {
|
|
|
123 return NGX_ERROR;
|
|
|
124 }
|
|
|
125
|
|
0
|
126 b->memory = 1;
|
|
|
127 b->last_buf = 1;
|
|
|
128 b->pos = (u_char *) CRLF "0" CRLF CRLF;
|
|
|
129 b->last = b->pos + 7;
|
|
|
130
|
|
|
131 cl->buf->last_buf = 0;
|
|
|
132
|
|
|
133 if (size == 0) {
|
|
|
134 b->pos += 2;
|
|
|
135 out.buf = b;
|
|
|
136 out.next = NULL;
|
|
|
137
|
|
|
138 return ngx_http_next_body_filter(r, &out);
|
|
|
139 }
|
|
|
140
|
|
|
141 } else {
|
|
|
142 if (size == 0) {
|
|
|
143 *ll = NULL;
|
|
|
144 return ngx_http_next_body_filter(r, out.next);
|
|
|
145 }
|
|
|
146
|
|
10
|
147 if (!(b = ngx_calloc_buf(r->pool))) {
|
|
|
148 return NGX_ERROR;
|
|
|
149 }
|
|
|
150
|
|
0
|
151 b->memory = 1;
|
|
|
152 b->pos = (u_char *) CRLF;
|
|
|
153 b->last = b->pos + 2;
|
|
|
154 }
|
|
|
155
|
|
|
156 tail.buf = b;
|
|
|
157 tail.next = NULL;
|
|
|
158 *ll = &tail;
|
|
|
159
|
|
|
160 return ngx_http_next_body_filter(r, &out);
|
|
|
161 }
|
|
|
162
|
|
|
163
|
|
|
164 static ngx_int_t ngx_http_chunked_filter_init(ngx_cycle_t *cycle)
|
|
|
165 {
|
|
|
166 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
167 ngx_http_top_header_filter = ngx_http_chunked_header_filter;
|
|
|
168
|
|
|
169 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
170 ngx_http_top_body_filter = ngx_http_chunked_body_filter;
|
|
|
171
|
|
|
172 return NGX_OK;
|
|
|
173 }
|
