diff options
Diffstat (limited to 'storage/mroonga/vendor/groonga/vendor/nginx-1.7.4/src/http/modules/ngx_http_headers_filter_module.c')
-rw-r--r-- | storage/mroonga/vendor/groonga/vendor/nginx-1.7.4/src/http/modules/ngx_http_headers_filter_module.c | 635 |
1 files changed, 635 insertions, 0 deletions
diff --git a/storage/mroonga/vendor/groonga/vendor/nginx-1.7.4/src/http/modules/ngx_http_headers_filter_module.c b/storage/mroonga/vendor/groonga/vendor/nginx-1.7.4/src/http/modules/ngx_http_headers_filter_module.c new file mode 100644 index 00000000000..e33e7ce5271 --- /dev/null +++ b/storage/mroonga/vendor/groonga/vendor/nginx-1.7.4/src/http/modules/ngx_http_headers_filter_module.c @@ -0,0 +1,635 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Nginx, Inc. + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +typedef struct ngx_http_header_val_s ngx_http_header_val_t; + +typedef ngx_int_t (*ngx_http_set_header_pt)(ngx_http_request_t *r, + ngx_http_header_val_t *hv, ngx_str_t *value); + + +typedef struct { + ngx_str_t name; + ngx_uint_t offset; + ngx_http_set_header_pt handler; +} ngx_http_set_header_t; + + +struct ngx_http_header_val_s { + ngx_http_complex_value_t value; + ngx_str_t key; + ngx_http_set_header_pt handler; + ngx_uint_t offset; +}; + + +typedef enum { + NGX_HTTP_EXPIRES_OFF, + NGX_HTTP_EXPIRES_EPOCH, + NGX_HTTP_EXPIRES_MAX, + NGX_HTTP_EXPIRES_ACCESS, + NGX_HTTP_EXPIRES_MODIFIED, + NGX_HTTP_EXPIRES_DAILY, + NGX_HTTP_EXPIRES_UNSET +} ngx_http_expires_t; + + +typedef struct { + ngx_http_expires_t expires; + time_t expires_time; + ngx_array_t *headers; +} ngx_http_headers_conf_t; + + +static ngx_int_t ngx_http_set_expires(ngx_http_request_t *r, + ngx_http_headers_conf_t *conf); +static ngx_int_t ngx_http_add_cache_control(ngx_http_request_t *r, + ngx_http_header_val_t *hv, ngx_str_t *value); +static ngx_int_t ngx_http_add_header(ngx_http_request_t *r, + ngx_http_header_val_t *hv, ngx_str_t *value); +static ngx_int_t ngx_http_set_last_modified(ngx_http_request_t *r, + ngx_http_header_val_t *hv, ngx_str_t *value); +static ngx_int_t ngx_http_set_response_header(ngx_http_request_t *r, + ngx_http_header_val_t *hv, ngx_str_t *value); + +static void *ngx_http_headers_create_conf(ngx_conf_t *cf); +static char *ngx_http_headers_merge_conf(ngx_conf_t *cf, + void *parent, void *child); +static ngx_int_t ngx_http_headers_filter_init(ngx_conf_t *cf); +static char *ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + + +static ngx_http_set_header_t ngx_http_set_headers[] = { + + { ngx_string("Cache-Control"), 0, ngx_http_add_cache_control }, + + { ngx_string("Last-Modified"), + offsetof(ngx_http_headers_out_t, last_modified), + ngx_http_set_last_modified }, + + { ngx_string("ETag"), + offsetof(ngx_http_headers_out_t, etag), + ngx_http_set_response_header }, + + { ngx_null_string, 0, NULL } +}; + + +static ngx_command_t ngx_http_headers_filter_commands[] = { + + { ngx_string("expires"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE12, + ngx_http_headers_expires, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL}, + + { ngx_string("add_header"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF + |NGX_CONF_TAKE2, + ngx_http_headers_add, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL}, + + ngx_null_command +}; + + +static ngx_http_module_t ngx_http_headers_filter_module_ctx = { + NULL, /* preconfiguration */ + ngx_http_headers_filter_init, /* postconfiguration */ + + NULL, /* create main configuration */ + NULL, /* init main configuration */ + + NULL, /* create server configuration */ + NULL, /* merge server configuration */ + + ngx_http_headers_create_conf, /* create location configuration */ + ngx_http_headers_merge_conf /* merge location configuration */ +}; + + +ngx_module_t ngx_http_headers_filter_module = { + NGX_MODULE_V1, + &ngx_http_headers_filter_module_ctx, /* module context */ + ngx_http_headers_filter_commands, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + NULL, /* init master */ + NULL, /* init module */ + NULL, /* init process */ + NULL, /* init thread */ + NULL, /* exit thread */ + NULL, /* exit process */ + NULL, /* exit master */ + NGX_MODULE_V1_PADDING +}; + + +static ngx_http_output_header_filter_pt ngx_http_next_header_filter; + + +static ngx_int_t +ngx_http_headers_filter(ngx_http_request_t *r) +{ + ngx_str_t value; + ngx_uint_t i; + ngx_http_header_val_t *h; + ngx_http_headers_conf_t *conf; + + conf = ngx_http_get_module_loc_conf(r, ngx_http_headers_filter_module); + + if ((conf->expires == NGX_HTTP_EXPIRES_OFF && conf->headers == NULL) + || r != r->main + || (r->headers_out.status != NGX_HTTP_OK + && r->headers_out.status != NGX_HTTP_CREATED + && r->headers_out.status != NGX_HTTP_NO_CONTENT + && r->headers_out.status != NGX_HTTP_PARTIAL_CONTENT + && r->headers_out.status != NGX_HTTP_MOVED_PERMANENTLY + && r->headers_out.status != NGX_HTTP_MOVED_TEMPORARILY + && r->headers_out.status != NGX_HTTP_SEE_OTHER + && r->headers_out.status != NGX_HTTP_NOT_MODIFIED + && r->headers_out.status != NGX_HTTP_TEMPORARY_REDIRECT)) + { + return ngx_http_next_header_filter(r); + } + + if (conf->expires != NGX_HTTP_EXPIRES_OFF) { + if (ngx_http_set_expires(r, conf) != NGX_OK) { + return NGX_ERROR; + } + } + + if (conf->headers) { + h = conf->headers->elts; + for (i = 0; i < conf->headers->nelts; i++) { + + if (ngx_http_complex_value(r, &h[i].value, &value) != NGX_OK) { + return NGX_ERROR; + } + + if (h[i].handler(r, &h[i], &value) != NGX_OK) { + return NGX_ERROR; + } + } + } + + return ngx_http_next_header_filter(r); +} + + +static ngx_int_t +ngx_http_set_expires(ngx_http_request_t *r, ngx_http_headers_conf_t *conf) +{ + size_t len; + time_t now, expires_time, max_age; + ngx_uint_t i; + ngx_table_elt_t *expires, *cc, **ccp; + + expires = r->headers_out.expires; + + if (expires == NULL) { + + expires = ngx_list_push(&r->headers_out.headers); + if (expires == NULL) { + return NGX_ERROR; + } + + r->headers_out.expires = expires; + + expires->hash = 1; + ngx_str_set(&expires->key, "Expires"); + } + + len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT"); + expires->value.len = len - 1; + + ccp = r->headers_out.cache_control.elts; + + if (ccp == NULL) { + + if (ngx_array_init(&r->headers_out.cache_control, r->pool, + 1, sizeof(ngx_table_elt_t *)) + != NGX_OK) + { + return NGX_ERROR; + } + + ccp = ngx_array_push(&r->headers_out.cache_control); + if (ccp == NULL) { + return NGX_ERROR; + } + + cc = ngx_list_push(&r->headers_out.headers); + if (cc == NULL) { + return NGX_ERROR; + } + + cc->hash = 1; + ngx_str_set(&cc->key, "Cache-Control"); + *ccp = cc; + + } else { + for (i = 1; i < r->headers_out.cache_control.nelts; i++) { + ccp[i]->hash = 0; + } + + cc = ccp[0]; + } + + if (conf->expires == NGX_HTTP_EXPIRES_EPOCH) { + expires->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT"; + ngx_str_set(&cc->value, "no-cache"); + return NGX_OK; + } + + if (conf->expires == NGX_HTTP_EXPIRES_MAX) { + expires->value.data = (u_char *) "Thu, 31 Dec 2037 23:55:55 GMT"; + /* 10 years */ + ngx_str_set(&cc->value, "max-age=315360000"); + return NGX_OK; + } + + expires->value.data = ngx_pnalloc(r->pool, len); + if (expires->value.data == NULL) { + return NGX_ERROR; + } + + if (conf->expires_time == 0 && conf->expires != NGX_HTTP_EXPIRES_DAILY) { + ngx_memcpy(expires->value.data, ngx_cached_http_time.data, + ngx_cached_http_time.len + 1); + ngx_str_set(&cc->value, "max-age=0"); + return NGX_OK; + } + + now = ngx_time(); + + if (conf->expires == NGX_HTTP_EXPIRES_DAILY) { + expires_time = ngx_next_time(conf->expires_time); + max_age = expires_time - now; + + } else if (conf->expires == NGX_HTTP_EXPIRES_ACCESS + || r->headers_out.last_modified_time == -1) + { + expires_time = now + conf->expires_time; + max_age = conf->expires_time; + + } else { + expires_time = r->headers_out.last_modified_time + conf->expires_time; + max_age = expires_time - now; + } + + ngx_http_time(expires->value.data, expires_time); + + if (conf->expires_time < 0 || max_age < 0) { + ngx_str_set(&cc->value, "no-cache"); + return NGX_OK; + } + + cc->value.data = ngx_pnalloc(r->pool, + sizeof("max-age=") + NGX_TIME_T_LEN + 1); + if (cc->value.data == NULL) { + return NGX_ERROR; + } + + cc->value.len = ngx_sprintf(cc->value.data, "max-age=%T", max_age) + - cc->value.data; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_add_header(ngx_http_request_t *r, ngx_http_header_val_t *hv, + ngx_str_t *value) +{ + ngx_table_elt_t *h; + + if (value->len) { + h = ngx_list_push(&r->headers_out.headers); + if (h == NULL) { + return NGX_ERROR; + } + + h->hash = 1; + h->key = hv->key; + h->value = *value; + } + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_add_cache_control(ngx_http_request_t *r, ngx_http_header_val_t *hv, + ngx_str_t *value) +{ + ngx_table_elt_t *cc, **ccp; + + if (value->len == 0) { + return NGX_OK; + } + + ccp = r->headers_out.cache_control.elts; + + if (ccp == NULL) { + + if (ngx_array_init(&r->headers_out.cache_control, r->pool, + 1, sizeof(ngx_table_elt_t *)) + != NGX_OK) + { + return NGX_ERROR; + } + } + + ccp = ngx_array_push(&r->headers_out.cache_control); + if (ccp == NULL) { + return NGX_ERROR; + } + + cc = ngx_list_push(&r->headers_out.headers); + if (cc == NULL) { + return NGX_ERROR; + } + + cc->hash = 1; + ngx_str_set(&cc->key, "Cache-Control"); + cc->value = *value; + + *ccp = cc; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_set_last_modified(ngx_http_request_t *r, ngx_http_header_val_t *hv, + ngx_str_t *value) +{ + if (ngx_http_set_response_header(r, hv, value) != NGX_OK) { + return NGX_ERROR; + } + + r->headers_out.last_modified_time = + (value->len) ? ngx_http_parse_time(value->data, value->len) : -1; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_set_response_header(ngx_http_request_t *r, ngx_http_header_val_t *hv, + ngx_str_t *value) +{ + ngx_table_elt_t *h, **old; + + old = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset); + + if (value->len == 0) { + if (*old) { + (*old)->hash = 0; + *old = NULL; + } + + return NGX_OK; + } + + if (*old) { + h = *old; + + } else { + h = ngx_list_push(&r->headers_out.headers); + if (h == NULL) { + return NGX_ERROR; + } + + *old = h; + } + + h->hash = 1; + h->key = hv->key; + h->value = *value; + + return NGX_OK; +} + + +static void * +ngx_http_headers_create_conf(ngx_conf_t *cf) +{ + ngx_http_headers_conf_t *conf; + + conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_headers_conf_t)); + if (conf == NULL) { + return NULL; + } + + /* + * set by ngx_pcalloc(): + * + * conf->headers = NULL; + * conf->expires_time = 0; + */ + + conf->expires = NGX_HTTP_EXPIRES_UNSET; + + return conf; +} + + +static char * +ngx_http_headers_merge_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_headers_conf_t *prev = parent; + ngx_http_headers_conf_t *conf = child; + + if (conf->expires == NGX_HTTP_EXPIRES_UNSET) { + conf->expires = prev->expires; + conf->expires_time = prev->expires_time; + + if (conf->expires == NGX_HTTP_EXPIRES_UNSET) { + conf->expires = NGX_HTTP_EXPIRES_OFF; + } + } + + if (conf->headers == NULL) { + conf->headers = prev->headers; + } + + return NGX_CONF_OK; +} + + +static ngx_int_t +ngx_http_headers_filter_init(ngx_conf_t *cf) +{ + ngx_http_next_header_filter = ngx_http_top_header_filter; + ngx_http_top_header_filter = ngx_http_headers_filter; + + return NGX_OK; +} + + +static char * +ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_headers_conf_t *hcf = conf; + + ngx_uint_t minus, n; + ngx_str_t *value; + + if (hcf->expires != NGX_HTTP_EXPIRES_UNSET) { + return "is duplicate"; + } + + value = cf->args->elts; + + if (cf->args->nelts == 2) { + + if (ngx_strcmp(value[1].data, "epoch") == 0) { + hcf->expires = NGX_HTTP_EXPIRES_EPOCH; + return NGX_CONF_OK; + } + + if (ngx_strcmp(value[1].data, "max") == 0) { + hcf->expires = NGX_HTTP_EXPIRES_MAX; + return NGX_CONF_OK; + } + + if (ngx_strcmp(value[1].data, "off") == 0) { + hcf->expires = NGX_HTTP_EXPIRES_OFF; + return NGX_CONF_OK; + } + + hcf->expires = NGX_HTTP_EXPIRES_ACCESS; + + n = 1; + + } else { /* cf->args->nelts == 3 */ + + if (ngx_strcmp(value[1].data, "modified") != 0) { + return "invalid value"; + } + + hcf->expires = NGX_HTTP_EXPIRES_MODIFIED; + + n = 2; + } + + if (value[n].data[0] == '@') { + value[n].data++; + value[n].len--; + minus = 0; + + if (hcf->expires == NGX_HTTP_EXPIRES_MODIFIED) { + return "daily time cannot be used with \"modified\" parameter"; + } + + hcf->expires = NGX_HTTP_EXPIRES_DAILY; + + } else if (value[n].data[0] == '+') { + value[n].data++; + value[n].len--; + minus = 0; + + } else if (value[n].data[0] == '-') { + value[n].data++; + value[n].len--; + minus = 1; + + } else { + minus = 0; + } + + hcf->expires_time = ngx_parse_time(&value[n], 1); + + if (hcf->expires_time == (time_t) NGX_ERROR) { + return "invalid value"; + } + + if (hcf->expires == NGX_HTTP_EXPIRES_DAILY + && hcf->expires_time > 24 * 60 * 60) + { + return "daily time value must be less than 24 hours"; + } + + if (minus) { + hcf->expires_time = - hcf->expires_time; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_http_headers_conf_t *hcf = conf; + + ngx_str_t *value; + ngx_uint_t i; + ngx_http_header_val_t *hv; + ngx_http_set_header_t *set; + ngx_http_compile_complex_value_t ccv; + + value = cf->args->elts; + + if (hcf->headers == NULL) { + hcf->headers = ngx_array_create(cf->pool, 1, + sizeof(ngx_http_header_val_t)); + if (hcf->headers == NULL) { + return NGX_CONF_ERROR; + } + } + + hv = ngx_array_push(hcf->headers); + if (hv == NULL) { + return NGX_CONF_ERROR; + } + + hv->key = value[1]; + hv->handler = ngx_http_add_header; + hv->offset = 0; + + set = ngx_http_set_headers; + for (i = 0; set[i].name.len; i++) { + if (ngx_strcasecmp(value[1].data, set[i].name.data) != 0) { + continue; + } + + hv->offset = set[i].offset; + hv->handler = set[i].handler; + + break; + } + + if (value[2].len == 0) { + ngx_memzero(&hv->value, sizeof(ngx_http_complex_value_t)); + return NGX_CONF_OK; + } + + ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); + + ccv.cf = cf; + ccv.value = &value[2]; + ccv.complex_value = &hv->value; + + if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} |