|
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
|
|
|
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 */
|
|
|
35 NULL /* init process */
|
|
|
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
|
|
|
44 ngx_http_chunked_header_filter(ngx_http_request_t *r)
|
|
|
45 {
|
|
|
46 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED) {
|
|
|
47 return ngx_http_next_header_filter(r);
|
|
|
48 }
|
|
|
49
|
|
|
50 if (r->headers_out.content_length_n == -1) {
|
|
|
51 if (r->http_version < NGX_HTTP_VERSION_11) {
|
|
|
52 r->keepalive = 0;
|
|
|
53
|
|
|
54 } else {
|
|
|
55 r->chunked = 1;
|
|
|
56 }
|
|
|
57 }
|
|
|
58
|
|
|
59 return ngx_http_next_header_filter(r);
|
|
|
60 }
|
|
|
61
|
|
|
62
|
|
|
63 static ngx_int_t
|
|
|
64 ngx_http_chunked_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
|
65 {
|
|
|
66 u_char *chunk;
|
|
|
67 off_t size;
|
|
|
68 ngx_buf_t *b;
|
|
|
69 ngx_chain_t out, tail, *cl, *tl, **ll;
|
|
|
70
|
|
|
71 if (in == NULL || !r->chunked || r->header_only) {
|
|
|
72 return ngx_http_next_body_filter(r, in);
|
|
|
73 }
|
|
|
74
|
|
|
75 out.buf = NULL;
|
|
|
76 ll = &out.next;
|
|
|
77
|
|
|
78 size = 0;
|
|
|
79 cl = in;
|
|
|
80
|
|
|
81 for ( ;; ) {
|
|
|
82 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
83 "http chunk: %d", ngx_buf_size(cl->buf));
|
|
|
84
|
|
|
85 size += ngx_buf_size(cl->buf);
|
|
|
86
|
|
|
87 if (cl->buf->flush || ngx_buf_in_memory(cl->buf) || cl->buf->in_file) {
|
|
|
88
|
|
|
89 tl = ngx_alloc_chain_link(r->pool);
|
|
|
90 if (tl == NULL) {
|
|
|
91 return NGX_ERROR;
|
|
|
92 }
|
|
|
93
|
|
|
94 tl->buf = cl->buf;
|
|
|
95 *ll = tl;
|
|
|
96 ll = &tl->next;
|
|
|
97 }
|
|
|
98
|
|
|
99 if (cl->next == NULL) {
|
|
|
100 break;
|
|
|
101 }
|
|
|
102
|
|
|
103 cl = cl->next;
|
|
|
104 }
|
|
|
105
|
|
|
106 if (size) {
|
|
|
107 b = ngx_calloc_buf(r->pool);
|
|
|
108 if (b == NULL) {
|
|
|
109 return NGX_ERROR;
|
|
|
110 }
|
|
|
111
|
|
|
112 /* the "0000000000000000" is 64-bit hexadimal string */
|
|
|
113
|
|
|
114 chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1);
|
|
|
115 if (chunk == NULL) {
|
|
|
116 return NGX_ERROR;
|
|
|
117 }
|
|
|
118
|
|
|
119 b->temporary = 1;
|
|
|
120 b->pos = chunk;
|
|
|
121 b->last = ngx_sprintf(chunk, "%xO" CRLF, size);
|
|
|
122
|
|
|
123 out.buf = b;
|
|
|
124 }
|
|
|
125
|
|
|
126 if (cl->buf->last_buf) {
|
|
|
127 b = ngx_calloc_buf(r->pool);
|
|
|
128 if (b == NULL) {
|
|
|
129 return NGX_ERROR;
|
|
|
130 }
|
|
|
131
|
|
|
132 b->memory = 1;
|
|
|
133 b->last_buf = 1;
|
|
|
134 b->pos = (u_char *) CRLF "0" CRLF CRLF;
|
|
|
135 b->last = b->pos + 7;
|
|
|
136
|
|
|
137 cl->buf->last_buf = 0;
|
|
|
138
|
|
|
139 if (size == 0) {
|
|
|
140 b->pos += 2;
|
|
|
141 out.buf = b;
|
|
|
142 out.next = NULL;
|
|
|
143
|
|
|
144 return ngx_http_next_body_filter(r, &out);
|
|
|
145 }
|
|
|
146
|
|
|
147 } else {
|
|
|
148 if (size == 0) {
|
|
|
149 *ll = NULL;
|
|
|
150 return ngx_http_next_body_filter(r, out.next);
|
|
|
151 }
|
|
|
152
|
|
|
153 b = ngx_calloc_buf(r->pool);
|
|
|
154 if (b == NULL) {
|
|
|
155 return NGX_ERROR;
|
|
|
156 }
|
|
|
157
|
|
|
158 b->memory = 1;
|
|
|
159 b->pos = (u_char *) CRLF;
|
|
|
160 b->last = b->pos + 2;
|
|
|
161 }
|
|
|
162
|
|
|
163 tail.buf = b;
|
|
|
164 tail.next = NULL;
|
|
|
165 *ll = &tail;
|
|
|
166
|
|
|
167 return ngx_http_next_body_filter(r, &out);
|
|
|
168 }
|
|
|
169
|
|
|
170
|
|
|
171 static ngx_int_t
|
|
|
172 ngx_http_chunked_filter_init(ngx_cycle_t *cycle)
|
|
|
173 {
|
|
|
174 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
175 ngx_http_top_header_filter = ngx_http_chunked_header_filter;
|
|
|
176
|
|
|
177 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
178 ngx_http_top_body_filter = ngx_http_chunked_body_filter;
|
|
|
179
|
|
|
180 return NGX_OK;
|
|
|
181 }
|
