Mercurial > hg > nginx-vendor-0-6
comparison src/http/modules/ngx_http_chunked_filter.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 04 Oct 2004 00:00:00 +0400 |
parents | |
children | cc9f381affaa |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:f0b350454894 |
---|---|
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 child */ | |
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; | |
66 size_t size, len; | |
67 ngx_buf_t *b; | |
68 ngx_chain_t out, tail, *cl, *tl, **ll; | |
69 | |
70 if (in == NULL || !r->chunked) { | |
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 | |
86 ngx_test_null(tl, ngx_alloc_chain_link(r->pool), NGX_ERROR); | |
87 tl->buf = cl->buf; | |
88 *ll = tl; | |
89 ll = &tl->next; | |
90 | |
91 if (cl->next == NULL) { | |
92 break; | |
93 } | |
94 | |
95 cl = cl->next; | |
96 } | |
97 | |
98 if (size) { | |
99 ngx_test_null(chunk, ngx_palloc(r->pool, 11), NGX_ERROR); | |
100 len = ngx_snprintf((char *) chunk, 11, SIZE_T_X_FMT CRLF, size); | |
101 | |
102 ngx_test_null(b, ngx_calloc_buf(r->pool), NGX_ERROR); | |
103 b->temporary = 1; | |
104 b->pos = chunk; | |
105 b->last = chunk + len; | |
106 | |
107 out.buf = b; | |
108 } | |
109 | |
110 if (cl->buf->last_buf) { | |
111 ngx_test_null(b, ngx_calloc_buf(r->pool), NGX_ERROR); | |
112 b->memory = 1; | |
113 b->last_buf = 1; | |
114 b->pos = (u_char *) CRLF "0" CRLF CRLF; | |
115 b->last = b->pos + 7; | |
116 | |
117 cl->buf->last_buf = 0; | |
118 | |
119 if (size == 0) { | |
120 b->pos += 2; | |
121 out.buf = b; | |
122 out.next = NULL; | |
123 | |
124 return ngx_http_next_body_filter(r, &out); | |
125 } | |
126 | |
127 } else { | |
128 if (size == 0) { | |
129 *ll = NULL; | |
130 return ngx_http_next_body_filter(r, out.next); | |
131 } | |
132 | |
133 ngx_test_null(b, ngx_calloc_buf(r->pool), NGX_ERROR); | |
134 b->memory = 1; | |
135 b->pos = (u_char *) CRLF; | |
136 b->last = b->pos + 2; | |
137 } | |
138 | |
139 tail.buf = b; | |
140 tail.next = NULL; | |
141 *ll = &tail; | |
142 | |
143 return ngx_http_next_body_filter(r, &out); | |
144 } | |
145 | |
146 | |
147 static ngx_int_t ngx_http_chunked_filter_init(ngx_cycle_t *cycle) | |
148 { | |
149 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
150 ngx_http_top_header_filter = ngx_http_chunked_header_filter; | |
151 | |
152 ngx_http_next_body_filter = ngx_http_top_body_filter; | |
153 ngx_http_top_body_filter = ngx_http_chunked_body_filter; | |
154 | |
155 return NGX_OK; | |
156 } |