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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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660
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4 * Copyright (C) Nginx, Inc.
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244
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5 */
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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12 static char *ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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13
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14 static ngx_command_t ngx_http_flv_commands[] = {
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15
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16 { ngx_string("flv"),
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17 NGX_HTTP_LOC_CONF|NGX_CONF_NOARGS,
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18 ngx_http_flv,
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19 0,
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20 0,
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21 NULL },
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22
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23 ngx_null_command
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24 };
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25
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26
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650
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27 static u_char ngx_flv_header[] = "FLV\x1\x5\0\0\0\x9\0\0\0\0";
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244
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28
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29
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30 static ngx_http_module_t ngx_http_flv_module_ctx = {
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31 NULL, /* preconfiguration */
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32 NULL, /* postconfiguration */
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33
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34 NULL, /* create main configuration */
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35 NULL, /* init main configuration */
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36
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37 NULL, /* create server configuration */
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38 NULL, /* merge server configuration */
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39
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40 NULL, /* create location configuration */
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41 NULL /* merge location configuration */
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42 };
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43
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44
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45 ngx_module_t ngx_http_flv_module = {
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46 NGX_MODULE_V1,
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47 &ngx_http_flv_module_ctx, /* module context */
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48 ngx_http_flv_commands, /* module directives */
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49 NGX_HTTP_MODULE, /* module type */
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50 NULL, /* init master */
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51 NULL, /* init module */
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52 NULL, /* init process */
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53 NULL, /* init thread */
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54 NULL, /* exit thread */
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55 NULL, /* exit process */
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56 NULL, /* exit master */
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57 NGX_MODULE_V1_PADDING
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58 };
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59
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60
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61 static ngx_int_t
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62 ngx_http_flv_handler(ngx_http_request_t *r)
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63 {
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432
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64 u_char *last;
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244
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65 off_t start, len;
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248
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66 size_t root;
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244
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67 ngx_int_t rc;
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246
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68 ngx_uint_t level, i;
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432
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69 ngx_str_t path, value;
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244
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70 ngx_log_t *log;
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71 ngx_buf_t *b;
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72 ngx_chain_t out[2];
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332
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73 ngx_open_file_info_t of;
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244
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74 ngx_http_core_loc_conf_t *clcf;
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75
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76 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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77 return NGX_HTTP_NOT_ALLOWED;
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78 }
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79
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80 if (r->uri.data[r->uri.len - 1] == '/') {
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81 return NGX_DECLINED;
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82 }
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83
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326
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84 rc = ngx_http_discard_request_body(r);
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244
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85
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326
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86 if (rc != NGX_OK) {
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244
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87 return rc;
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88 }
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89
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332
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90 last = ngx_http_map_uri_to_path(r, &path, &root, 0);
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91 if (last == NULL) {
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244
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92 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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93 }
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94
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95 log = r->connection->log;
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96
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332
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97 path.len = last - path.data;
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244
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98
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332
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99 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0,
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100 "http flv filename: \"%V\"", &path);
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101
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102 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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244
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103
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384
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104 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
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105
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532
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106 of.read_ahead = clcf->read_ahead;
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390
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107 of.directio = clcf->directio;
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358
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108 of.valid = clcf->open_file_cache_valid;
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109 of.min_uses = clcf->open_file_cache_min_uses;
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332
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110 of.errors = clcf->open_file_cache_errors;
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111 of.events = clcf->open_file_cache_events;
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664
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112
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113 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
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114 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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115 }
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340
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116
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362
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117 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
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118 != NGX_OK)
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119 {
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332
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120 switch (of.err) {
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121
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122 case 0:
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123 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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124
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125 case NGX_ENOENT:
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126 case NGX_ENOTDIR:
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127 case NGX_ENAMETOOLONG:
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128
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244
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129 level = NGX_LOG_ERR;
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130 rc = NGX_HTTP_NOT_FOUND;
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332
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131 break;
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244
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132
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332
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133 case NGX_EACCES:
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662
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134 #if (NGX_HAVE_OPENAT)
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135 case NGX_EMLINK:
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136 case NGX_ELOOP:
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137 #endif
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332
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138
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139 level = NGX_LOG_ERR;
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140 rc = NGX_HTTP_FORBIDDEN;
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332
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141 break;
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244
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142
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332
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143 default:
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144
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145 level = NGX_LOG_CRIT;
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146 rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
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332
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147 break;
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244
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148 }
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149
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150 if (rc != NGX_HTTP_NOT_FOUND || clcf->log_not_found) {
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332
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151 ngx_log_error(level, log, of.err,
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482
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152 "%s \"%s\" failed", of.failed, path.data);
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244
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153 }
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154
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155 return rc;
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156 }
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157
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332
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158 if (!of.is_file) {
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244
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159
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356
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160 if (ngx_close_file(of.fd) == NGX_FILE_ERROR) {
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244
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161 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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162 ngx_close_file_n " \"%s\" failed", path.data);
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163 }
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164
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165 return NGX_DECLINED;
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166 }
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167
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438
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168 r->root_tested = !r->error_page;
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388
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169
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244
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170 start = 0;
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332
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171 len = of.size;
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246
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172 i = 1;
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244
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173
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174 if (r->args.len) {
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175
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432
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176 if (ngx_http_arg(r, (u_char *) "start", 5, &value) == NGX_OK) {
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388
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177
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432
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178 start = ngx_atoof(value.data, value.len);
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244
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179
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180 if (start == NGX_ERROR || start >= len) {
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181 start = 0;
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182 }
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183
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246
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184 if (start) {
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185 len = sizeof(ngx_flv_header) - 1 + len - start;
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186 i = 0;
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187 }
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244
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188 }
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189 }
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190
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191 log->action = "sending flv to client";
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192
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193 r->headers_out.status = NGX_HTTP_OK;
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246
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194 r->headers_out.content_length_n = len;
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332
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195 r->headers_out.last_modified_time = of.mtime;
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244
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196
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680
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197 if (ngx_http_set_etag(r) != NGX_OK) {
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198 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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199 }
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200
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244
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201 if (ngx_http_set_content_type(r) != NGX_OK) {
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202 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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203 }
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204
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246
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205 if (i == 0) {
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206 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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207 if (b == NULL) {
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208 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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209 }
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244
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210
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211 b->pos = ngx_flv_header;
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212 b->last = ngx_flv_header + sizeof(ngx_flv_header) - 1;
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213 b->memory = 1;
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244
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214
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246
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215 out[0].buf = b;
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216 out[0].next = &out[1];
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217 }
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244
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218
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250
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219
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220 b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
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221 if (b == NULL) {
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222 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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223 }
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224
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225 b->file = ngx_pcalloc(r->pool, sizeof(ngx_file_t));
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226 if (b->file == NULL) {
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227 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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228 }
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229
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390
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230 r->allow_ranges = 1;
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231
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244
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232 rc = ngx_http_send_header(r);
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233
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234 if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
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235 return rc;
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236 }
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237
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238 b->file_pos = start;
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332
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239 b->file_last = of.size;
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244
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240
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241 b->in_file = b->file_last ? 1: 0;
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674
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242 b->last_buf = (r == r->main) ? 1 : 0;
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244
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243 b->last_in_chain = 1;
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244
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356
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245 b->file->fd = of.fd;
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244
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246 b->file->name = path;
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247 b->file->log = log;
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406
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248 b->file->directio = of.is_directio;
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244
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249
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250 out[1].buf = b;
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251 out[1].next = NULL;
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252
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246
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253 return ngx_http_output_filter(r, &out[i]);
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244
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254 }
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255
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256
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257 static char *
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258 ngx_http_flv(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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259 {
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260 ngx_http_core_loc_conf_t *clcf;
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261
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262 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
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263 clcf->handler = ngx_http_flv_handler;
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264
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265 return NGX_CONF_OK;
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266 }
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