Mercurial > hg > ngx_http_ip_tos_filter_module
annotate ngx_http_ip_tos_filter_module.c @ 1:a23404790f33 default tip
Whitespace cleanup, no functional changes.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Tue, 24 Nov 2009 13:52:31 +0300 |
| parents | 18515436c0f1 |
| children |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* | |
| 3 * Copyright (C) Maxim Dounin | |
| 4 */ | |
| 5 | |
| 6 #include <ngx_config.h> | |
| 7 #include <ngx_core.h> | |
| 8 #include <ngx_http.h> | |
| 9 | |
| 10 | |
| 11 typedef struct { | |
| 12 ngx_flag_t enable; | |
| 13 ngx_uint_t tos; | |
| 14 } ngx_http_ip_tos_conf_t; | |
| 15 | |
| 16 | |
| 17 static void *ngx_http_ip_tos_create_conf(ngx_conf_t *cf); | |
| 18 static char *ngx_http_ip_tos_merge_conf(ngx_conf_t *cf, void *parent, | |
| 19 void *child); | |
| 20 static char *ngx_http_ip_tos(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | |
| 21 static ngx_int_t ngx_http_ip_tos_init(ngx_conf_t *cf); | |
| 22 | |
| 23 | |
| 24 static ngx_command_t ngx_http_ip_tos_commands[] = { | |
| 25 | |
| 26 { ngx_string("ip_tos"), | |
| 27 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 28 ngx_http_ip_tos, | |
| 29 NGX_HTTP_LOC_CONF_OFFSET, | |
| 30 0, | |
| 31 NULL }, | |
| 32 | |
| 33 ngx_null_command | |
| 34 }; | |
| 35 | |
| 36 | |
| 37 static ngx_http_module_t ngx_http_ip_tos_module_ctx = { | |
| 38 NULL, /* preconfiguration */ | |
| 39 ngx_http_ip_tos_init, /* postconfiguration */ | |
| 40 | |
| 41 NULL, /* create main configuration */ | |
| 42 NULL, /* init main configuration */ | |
| 43 | |
| 44 NULL, /* create server configuration */ | |
| 45 NULL, /* merge server configuration */ | |
| 46 | |
| 47 ngx_http_ip_tos_create_conf, /* create location configuration */ | |
| 48 ngx_http_ip_tos_merge_conf /* merge location configuration */ | |
| 49 }; | |
| 50 | |
| 51 | |
| 52 ngx_module_t ngx_http_ip_tos_filter_module = { | |
| 53 NGX_MODULE_V1, | |
| 54 &ngx_http_ip_tos_module_ctx, /* module context */ | |
| 55 ngx_http_ip_tos_commands, /* module directives */ | |
| 56 NGX_HTTP_MODULE, /* module type */ | |
| 57 NULL, /* init master */ | |
| 58 NULL, /* init module */ | |
| 59 NULL, /* init process */ | |
| 60 NULL, /* init thread */ | |
| 61 NULL, /* exit thread */ | |
| 62 NULL, /* exit process */ | |
| 63 NULL, /* exit master */ | |
| 64 NGX_MODULE_V1_PADDING | |
| 65 }; | |
| 66 | |
| 67 | |
| 68 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; | |
| 69 | |
| 70 | |
| 71 static ngx_int_t | |
| 72 ngx_http_ip_tos_header_filter(ngx_http_request_t *r) | |
| 73 { | |
| 74 int tos; | |
| 75 ngx_http_ip_tos_conf_t *conf; | |
| 76 | |
| 77 if (r != r->main) { | |
| 78 return ngx_http_next_header_filter(r); | |
| 79 } | |
| 80 | |
| 81 conf = ngx_http_get_module_loc_conf(r, ngx_http_ip_tos_filter_module); | |
| 82 | |
| 83 if (!conf->enable) { | |
| 84 return ngx_http_next_header_filter(r); | |
| 85 } | |
| 86 | |
| 87 tos = conf->tos; | |
| 88 | |
| 89 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 90 "ip tos: 0x%02Xi", tos); | |
| 91 | |
| 92 if (setsockopt(r->connection->fd, IPPROTO_IP, IP_TOS, | |
| 93 (const void *) &tos, sizeof(tos)) == -1) | |
| 94 { | |
| 95 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_socket_errno, | |
| 96 "setsockopt(IP_TOS) failed"); | |
| 97 } | |
| 98 | |
| 99 return ngx_http_next_header_filter(r); | |
| 100 } | |
| 101 | |
| 102 | |
| 103 static void * | |
| 104 ngx_http_ip_tos_create_conf(ngx_conf_t *cf) | |
| 105 { | |
| 106 ngx_http_ip_tos_conf_t *conf; | |
| 107 | |
| 108 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_ip_tos_conf_t)); | |
| 109 if (conf == NULL) { | |
| 110 return NULL; | |
| 111 } | |
| 112 | |
| 113 conf->enable = NGX_CONF_UNSET; | |
| 114 conf->tos = NGX_CONF_UNSET_UINT; | |
| 115 | |
| 116 return conf; | |
| 117 } | |
| 118 | |
| 119 | |
| 120 static char * | |
| 121 ngx_http_ip_tos_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 122 { | |
| 123 ngx_http_ip_tos_conf_t *prev = parent; | |
| 124 ngx_http_ip_tos_conf_t *conf = child; | |
| 125 | |
| 126 ngx_conf_merge_value(conf->enable, prev->enable, 0); | |
| 127 ngx_conf_merge_uint_value(conf->tos, prev->tos, 0); | |
| 128 | |
| 129 return NGX_CONF_OK; | |
| 130 } | |
| 131 | |
| 132 | |
| 133 static char * | |
| 134 ngx_http_ip_tos(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 135 { | |
| 136 ngx_http_ip_tos_conf_t *itcf = conf; | |
| 137 | |
| 138 ngx_int_t n; | |
| 139 ngx_str_t *value; | |
| 140 | |
| 141 if (itcf->enable != NGX_CONF_UNSET) { | |
| 142 return "is duplicate"; | |
| 143 } | |
| 144 | |
| 145 value = cf->args->elts; | |
| 146 | |
| 147 if (ngx_strcasecmp(value[1].data, (u_char *) "off") == 0) { | |
| 148 itcf->enable = 0; | |
| 149 return NGX_CONF_OK; | |
| 150 } | |
| 151 | |
|
1
a23404790f33
Whitespace cleanup, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
0
diff
changeset
|
152 if (value[1].len != 4 || value[1].data[0] != '0' || |
| 0 | 153 (value[1].data[1] != 'x' && value[1].data[1] != 'X')) |
| 154 { | |
| 155 return "invalid argument 1"; | |
| 156 } | |
| 157 | |
| 158 n = ngx_hextoi(value[1].data + 2, value[1].len - 2); | |
| 159 if (n == NGX_ERROR || n < 0 || n > 255) { | |
| 160 return "invalid argument 2"; | |
| 161 } | |
| 162 | |
| 163 itcf->enable = 1; | |
| 164 itcf->tos = n; | |
| 165 | |
| 166 return NGX_CONF_OK; | |
| 167 } | |
| 168 | |
| 169 | |
| 170 static ngx_int_t | |
| 171 ngx_http_ip_tos_init(ngx_conf_t *cf) | |
| 172 { | |
| 173 ngx_http_next_header_filter = ngx_http_top_header_filter; | |
| 174 ngx_http_top_header_filter = ngx_http_ip_tos_header_filter; | |
| 175 | |
| 176 return NGX_OK; | |
| 177 } |