что я хотел сделать:
есть статика flv, нужно сделать стримиинг на сайте, пушут делается очень просто
НО я хотел сделать уровни доступа, чтобы конретный файл НЕ отдавать конретному пользователю
можно в этом модуле на Си сделать SQL запрос и чтобы сессию посмотреть?
это можно сделать? или это криво будет?
http://lxr.evanmiller.org/http/source/h ... v_module.c
Код: Выделить всё
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6 #include <ngx_config.h>
7 #include <ngx_core.h>
8 #include <ngx_http.h>
9
10
11 static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
12
13 static ngx_command_t ngx_http_flv_commands[] = {
14
15 { ngx_string("flv"),
16 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
17 ngx_http_flv,
18 0,
19 0,
20 NULL },
21
22 ngx_null_command
23 };
24
25
26 static u_char ngx_flv_header[] = "FLV\x1\x1\0\0\0\x9\0\0\0\x9";
27
28
29 static ngx_http_module_t ngx_http_flv_module_ctx = {
30 NULL, /* preconfiguration */
31 NULL, /* postconfiguration */
32
33 NULL, /* create main configuration */
34 NULL, /* init main configuration */
35
36 NULL, /* create server configuration */
37 NULL, /* merge server configuration */
38
39 NULL, /* create location configuration */
40 NULL /* merge location configuration */
41 };
42
43
44 ngx_module_t ngx_http_flv_module = {
45 NGX_MODULE_V1,
46 &ngx_http_flv_module_ctx, /* module context */
47 ngx_http_flv_commands, /* module directives */
48 NGX_HTTP_MODULE, /* module type */
49 NULL, /* init master */
50 NULL, /* init module */
51 NULL, /* init process */
52 NULL, /* init thread */
53 NULL, /* exit thread */
54 NULL, /* exit process */
55 NULL, /* exit master */
56 NGX_MODULE_V1_PADDING
57 };
58
59
60 static ngx_int_t
61 ngx_http_flv_handler(ngx_http_request_t *r)
62 {
63 u_char *last;
64 off_t start, len;
65 size_t root;
66 ngx_int_t rc;
67 ngx_uint_t level, i;
68 ngx_str_t path, value;
69 ngx_log_t *log;
70 ngx_buf_t *b;
71 ngx_chain_t out[2];
72 ngx_open_file_info_t of;
73 ngx_http_core_loc_conf_t *clcf;
74
75 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
76 return NGX_HTTP_NOT_ALLOWED;
77 }
78
79 if (r->uri.data[r->uri.len - 1] == '/') {
80 return NGX_DECLINED;
81 }
82
83 if (r->zero_in_uri) {
84 return NGX_DECLINED;
85 }
86
87 rc = ngx_http_discard_request_body(r);
88
89 if (rc != NGX_OK) {
90 return rc;
91 }
92
93 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
94 if (last == NULL) {
95 return NGX_HTTP_INTERNAL_SERVER_ERROR;
96 }
97
98 log = r->connection->log;
99
100 path.len = last - path.data;
101
102 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
103 "http flv filename: \"%V\"", &path);
104
105 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
106
107 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
108
109 of.read_ahead = clcf->read_ahead;
110 of.directio = clcf->directio;
111 of.valid = clcf->open_file_cache_valid;
112 of.min_uses = clcf->open_file_cache_min_uses;
113 of.errors = clcf->open_file_cache_errors;
114 of.events = clcf->open_file_cache_events;
115
116 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
117 != NGX_OK)
118 {
119 switch (of.err) {
120
121 case 0:
122 return NGX_HTTP_INTERNAL_SERVER_ERROR;
123
124 case NGX_ENOENT:
125 case NGX_ENOTDIR:
126 case NGX_ENAMETOOLONG:
127
128 level = NGX_LOG_ERR;
129 rc = NGX_HTTP_NOT_FOUND;
130 break;
131
132 case NGX_EACCES:
133
134 level = NGX_LOG_ERR;
135 rc = NGX_HTTP_FORBIDDEN;
136 break;
137
138 default:
139
140 level = NGX_LOG_CRIT;
141 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
142 break;
143 }
144
145 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
146 ngx_log_error(level, log, of.err,
147 "%s \"%s\" failed", of.failed, path.data);
148 }
149
150 return rc;
151 }
152
153 if (!of.is_file) {
154
155 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
156 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
157 ngx_close_file_n " \"%s\" failed", path.data);
158 }
159
160 return NGX_DECLINED;
161 }
162
163 r->root_tested = !r->error_page;
164
165 start = 0;
166 len = of.size;
167 i = 1;
168
169 if (r->args.len) {
170
171 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
172
173 start = ngx_atoof(value.data, value.len);
174
175 if (start == NGX_ERROR || start >= len) {
176 start = 0;
177 }
178
179 if (start) {
180 len = sizeof(ngx_flv_header) - 1 + len - start;
181 i = 0;
182 }
183 }
184 }
185
186 log->action = "sending flv to client";
187
188 r->headers_out.status = NGX_HTTP_OK;
189 r->headers_out.content_length_n = len;
190 r->headers_out.last_modified_time = of.mtime;
191
192 if (ngx_http_set_content_type(r) != NGX_OK) {
193 return NGX_HTTP_INTERNAL_SERVER_ERROR;
194 }
195
196 if (i == 0) {
197 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
198 if (b == NULL) {
199 return NGX_HTTP_INTERNAL_SERVER_ERROR;
200 }
201
202 b->pos = ngx_flv_header;
203 b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1;
204 b->memory = 1;
205
206 out[0].buf = b;
207 out[0].next = &out[1];
208 }
209
210
211 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
212 if (b == NULL) {
213 return NGX_HTTP_INTERNAL_SERVER_ERROR;
214 }
215
216 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
217 if (b->file == NULL) {
218 return NGX_HTTP_INTERNAL_SERVER_ERROR;
219 }
220
221 r->allow_ranges = 1;
222
223 rc = ngx_http_send_header(r);
224
225 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
226 return rc;
227 }
228
229 b->file_pos = start;
230 b->file_last = of.size;
231
232 b->in_file = b->file_last ? 1: 0;
233 b->last_buf = 1;
234 b->last_in_chain = 1;
235
236 b->file->fd = of.fd;
237 b->file->name = path;
238 b->file->log = log;
239 b->file->directio = of.is_directio;
240
241 out[1].buf = b;
242 out[1].next = NULL;
243
244 return ngx_http_output_filter(r, &out[i]);
245 }
246
247
248 static char *
249 ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
250 {
251 ngx_http_core_loc_conf_t *clcf;
252
253 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
254 clcf->handler = ngx_http_flv_handler;
255
256 return NGX_CONF_OK;
257 }
258 
