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244
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6 #include <ngx_config.h>
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7 #include <ngx_core.h>
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8 #include <ngx_http.h>
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9
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10
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11 static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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12
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13 static ngx_command_t ngx_http_flv_commands[] = {
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14
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15 { ngx_string("flv"),
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16 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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17 ngx_http_flv,
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18 0,
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19 0,
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20 NULL },
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21
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22 ngx_null_command
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23 };
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24
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25
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26 static u_char ngx_flv_header[] = "FLV\x1\x1\0\0\0\x9\0\0\0\x9";
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27
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28
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29 static ngx_http_module_t ngx_http_flv_module_ctx = {
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30 NULL, /* preconfiguration */
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31 NULL, /* postconfiguration */
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32
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33 NULL, /* create main configuration */
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34 NULL, /* init main configuration */
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35
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36 NULL, /* create server configuration */
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37 NULL, /* merge server configuration */
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38
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39 NULL, /* create location configuration */
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40 NULL /* merge location configuration */
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41 };
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42
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43
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44 ngx_module_t ngx_http_flv_module = {
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45 NGX_MODULE_V1,
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46 &ngx_http_flv_module_ctx, /* module context */
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47 ngx_http_flv_commands, /* module directives */
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48 NGX_HTTP_MODULE, /* module type */
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49 NULL, /* init master */
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50 NULL, /* init module */
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51 NULL, /* init process */
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52 NULL, /* init thread */
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53 NULL, /* exit thread */
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54 NULL, /* exit process */
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55 NULL, /* exit master */
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56 NGX_MODULE_V1_PADDING
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57 };
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58
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59
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60 static ngx_int_t
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61 ngx_http_flv_handler(ngx_http_request_t *r)
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62 {
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432
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63 u_char *last;
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244
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64 off_t start, len;
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248
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65 size_t root;
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244
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66 ngx_int_t rc;
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246
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67 ngx_uint_t level, i;
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432
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68 ngx_str_t path, value;
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244
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69 ngx_log_t *log;
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70 ngx_buf_t *b;
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71 ngx_chain_t out[2];
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332
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72 ngx_open_file_info_t of;
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244
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73 ngx_http_core_loc_conf_t *clcf;
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74
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75 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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76 return NGX_HTTP_NOT_ALLOWED;
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77 }
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78
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79 if (r->uri.data[r->uri.len - 1] == '/') {
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80 return NGX_DECLINED;
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81 }
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82
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326
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83 rc = ngx_http_discard_request_body(r);
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244
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84
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326
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85 if (rc != NGX_OK) {
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244
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86 return rc;
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87 }
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88
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332
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89 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
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90 if (last == NULL) {
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244
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91 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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92 }
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93
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94 log = r->connection->log;
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95
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332
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96 path.len = last - path.data;
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244
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97
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332
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98 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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99 "http flv filename: \"%V\"", &path);
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100
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101 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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244
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102
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384
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103 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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104
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105 of.read_ahead = clcf->read_ahead;
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390
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106 of.directio = clcf->directio;
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107 of.valid = clcf->open_file_cache_valid;
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108 of.min_uses = clcf->open_file_cache_min_uses;
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332
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109 of.errors = clcf->open_file_cache_errors;
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110 of.events = clcf->open_file_cache_events;
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340
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111
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362
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112 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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113 != NGX_OK)
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114 {
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332
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115 switch (of.err) {
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116
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117 case 0:
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118 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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119
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120 case NGX_ENOENT:
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121 case NGX_ENOTDIR:
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122 case NGX_ENAMETOOLONG:
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123
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244
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124 level = NGX_LOG_ERR;
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125 rc = NGX_HTTP_NOT_FOUND;
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332
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126 break;
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244
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127
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332
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128 case NGX_EACCES:
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129
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130 level = NGX_LOG_ERR;
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131 rc = NGX_HTTP_FORBIDDEN;
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332
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132 break;
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244
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133
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332
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134 default:
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135
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136 level = NGX_LOG_CRIT;
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137 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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332
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138 break;
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244
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139 }
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140
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141 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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332
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142 ngx_log_error(level, log, of.err,
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143 "%s \"%s\" failed", of.failed, path.data);
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244
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144 }
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145
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146 return rc;
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147 }
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148
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332
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149 if (!of.is_file) {
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244
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150
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356
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151 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
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244
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152 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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153 ngx_close_file_n " \"%s\" failed", path.data);
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154 }
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155
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156 return NGX_DECLINED;
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157 }
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158
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438
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159 r->root_tested = !r->error_page;
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388
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160
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244
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161 start = 0;
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332
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162 len = of.size;
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246
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163 i = 1;
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244
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164
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165 if (r->args.len) {
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166
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432
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167 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
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388
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168
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432
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169 start = ngx_atoof(value.data, value.len);
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244
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170
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171 if (start == NGX_ERROR || start >= len) {
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172 start = 0;
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173 }
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174
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246
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175 if (start) {
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176 len = sizeof(ngx_flv_header) - 1 + len - start;
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177 i = 0;
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178 }
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244
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179 }
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180 }
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181
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182 log->action = "sending flv to client";
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183
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184 r->headers_out.status = NGX_HTTP_OK;
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246
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185 r->headers_out.content_length_n = len;
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332
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186 r->headers_out.last_modified_time = of.mtime;
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244
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187
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188 if (ngx_http_set_content_type(r) != NGX_OK) {
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189 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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190 }
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191
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246
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192 if (i == 0) {
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193 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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194 if (b == NULL) {
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195 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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196 }
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244
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197
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198 b->pos = ngx_flv_header;
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199 b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1;
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200 b->memory = 1;
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244
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201
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202 out[0].buf = b;
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203 out[0].next = &out[1];
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204 }
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244
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205
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250
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206
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207 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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208 if (b == NULL) {
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209 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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210 }
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211
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212 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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213 if (b->file == NULL) {
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214 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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215 }
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216
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390
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217 r->allow_ranges = 1;
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218
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219 rc = ngx_http_send_header(r);
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220
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221 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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222 return rc;
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223 }
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224
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225 b->file_pos = start;
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332
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226 b->file_last = of.size;
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244
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227
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228 b->in_file = b->file_last ? 1: 0;
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229 b->last_buf = 1;
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230 b->last_in_chain = 1;
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231
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356
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232 b->file->fd = of.fd;
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233 b->file->name = path;
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234 b->file->log = log;
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235 b->file->directio = of.is_directio;
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244
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236
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237 out[1].buf = b;
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238 out[1].next = NULL;
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239
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246
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240 return ngx_http_output_filter(r, &out[i]);
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244
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241 }
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242
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243
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244 static char *
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245 ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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246 {
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247 ngx_http_core_loc_conf_t *clcf;
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248
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249 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
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250 clcf->handler = ngx_http_flv_handler;
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251
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252 return NGX_CONF_OK;
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253 }
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