853 lines
21 KiB
C
853 lines
21 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_http.h>
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typedef struct ngx_http_header_val_s ngx_http_header_val_t;
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typedef ngx_int_t (*ngx_http_set_header_pt)(ngx_http_request_t *r,
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ngx_http_header_val_t *hv, ngx_str_t *value);
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typedef struct {
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ngx_str_t name;
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ngx_uint_t offset;
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ngx_http_set_header_pt handler;
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} ngx_http_set_header_t;
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struct ngx_http_header_val_s {
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ngx_http_complex_value_t value;
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ngx_str_t key;
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ngx_http_set_header_pt handler;
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ngx_uint_t offset;
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ngx_uint_t always; /* unsigned always:1 */
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};
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typedef enum {
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NGX_HTTP_EXPIRES_OFF,
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NGX_HTTP_EXPIRES_EPOCH,
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NGX_HTTP_EXPIRES_MAX,
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NGX_HTTP_EXPIRES_ACCESS,
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NGX_HTTP_EXPIRES_MODIFIED,
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NGX_HTTP_EXPIRES_DAILY,
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NGX_HTTP_EXPIRES_UNSET
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} ngx_http_expires_t;
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typedef struct {
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ngx_http_expires_t expires;
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time_t expires_time;
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ngx_http_complex_value_t *expires_value;
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ngx_array_t *headers;
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ngx_array_t *trailers;
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} ngx_http_headers_conf_t;
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static ngx_int_t ngx_http_set_expires(ngx_http_request_t *r,
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ngx_http_headers_conf_t *conf);
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static ngx_int_t ngx_http_parse_expires(ngx_str_t *value,
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ngx_http_expires_t *expires, time_t *expires_time, char **err);
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static ngx_int_t ngx_http_add_multi_header_lines(ngx_http_request_t *r,
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ngx_http_header_val_t *hv, ngx_str_t *value);
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static ngx_int_t ngx_http_add_header(ngx_http_request_t *r,
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ngx_http_header_val_t *hv, ngx_str_t *value);
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static ngx_int_t ngx_http_set_last_modified(ngx_http_request_t *r,
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ngx_http_header_val_t *hv, ngx_str_t *value);
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static ngx_int_t ngx_http_set_response_header(ngx_http_request_t *r,
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ngx_http_header_val_t *hv, ngx_str_t *value);
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static void *ngx_http_headers_create_conf(ngx_conf_t *cf);
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static char *ngx_http_headers_merge_conf(ngx_conf_t *cf,
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void *parent, void *child);
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static ngx_int_t ngx_http_headers_filter_init(ngx_conf_t *cf);
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static char *ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static char *ngx_http_headers_add(ngx_conf_t *cf, ngx_command_t *cmd,
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void *conf);
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static ngx_http_set_header_t ngx_http_set_headers[] = {
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{ ngx_string("Cache-Control"),
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offsetof(ngx_http_headers_out_t, cache_control),
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ngx_http_add_multi_header_lines },
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{ ngx_string("Link"),
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offsetof(ngx_http_headers_out_t, link),
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ngx_http_add_multi_header_lines },
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{ ngx_string("Last-Modified"),
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offsetof(ngx_http_headers_out_t, last_modified),
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ngx_http_set_last_modified },
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{ ngx_string("ETag"),
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offsetof(ngx_http_headers_out_t, etag),
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ngx_http_set_response_header },
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{ ngx_null_string, 0, NULL }
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};
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static ngx_command_t ngx_http_headers_filter_commands[] = {
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{ ngx_string("expires"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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|NGX_CONF_TAKE12,
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ngx_http_headers_expires,
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NGX_HTTP_LOC_CONF_OFFSET,
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0,
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NULL },
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{ ngx_string("add_header"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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|NGX_CONF_TAKE23,
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ngx_http_headers_add,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_headers_conf_t, headers),
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NULL },
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{ ngx_string("add_trailer"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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|NGX_CONF_TAKE23,
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ngx_http_headers_add,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_headers_conf_t, trailers),
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NULL },
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ngx_null_command
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};
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static ngx_http_module_t ngx_http_headers_filter_module_ctx = {
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NULL, /* preconfiguration */
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ngx_http_headers_filter_init, /* postconfiguration */
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NULL, /* create main configuration */
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NULL, /* init main configuration */
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NULL, /* create server configuration */
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NULL, /* merge server configuration */
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ngx_http_headers_create_conf, /* create location configuration */
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ngx_http_headers_merge_conf /* merge location configuration */
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};
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ngx_module_t ngx_http_headers_filter_module = {
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NGX_MODULE_V1,
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&ngx_http_headers_filter_module_ctx, /* module context */
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ngx_http_headers_filter_commands, /* module directives */
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NGX_HTTP_MODULE, /* module type */
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NULL, /* init master */
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NULL, /* init module */
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NULL, /* init process */
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NULL, /* init thread */
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NULL, /* exit thread */
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NULL, /* exit process */
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NULL, /* exit master */
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NGX_MODULE_V1_PADDING
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};
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static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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static ngx_int_t
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ngx_http_headers_filter(ngx_http_request_t *r)
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{
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ngx_str_t value;
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ngx_uint_t i, safe_status;
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ngx_http_header_val_t *h;
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ngx_http_headers_conf_t *conf;
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if (r != r->main) {
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return ngx_http_next_header_filter(r);
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}
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conf = ngx_http_get_module_loc_conf(r, ngx_http_headers_filter_module);
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if (conf->expires == NGX_HTTP_EXPIRES_OFF
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&& conf->headers == NULL
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&& conf->trailers == NULL)
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{
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return ngx_http_next_header_filter(r);
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}
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switch (r->headers_out.status) {
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case NGX_HTTP_OK:
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case NGX_HTTP_CREATED:
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case NGX_HTTP_NO_CONTENT:
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case NGX_HTTP_PARTIAL_CONTENT:
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case NGX_HTTP_MOVED_PERMANENTLY:
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case NGX_HTTP_MOVED_TEMPORARILY:
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case NGX_HTTP_SEE_OTHER:
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case NGX_HTTP_NOT_MODIFIED:
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case NGX_HTTP_TEMPORARY_REDIRECT:
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case NGX_HTTP_PERMANENT_REDIRECT:
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safe_status = 1;
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break;
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default:
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safe_status = 0;
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break;
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}
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if (conf->expires != NGX_HTTP_EXPIRES_OFF && safe_status) {
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if (ngx_http_set_expires(r, conf) != NGX_OK) {
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return NGX_ERROR;
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}
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}
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if (conf->headers) {
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h = conf->headers->elts;
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for (i = 0; i < conf->headers->nelts; i++) {
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if (!safe_status && !h[i].always) {
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continue;
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}
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if (ngx_http_complex_value(r, &h[i].value, &value) != NGX_OK) {
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return NGX_ERROR;
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}
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if (h[i].handler(r, &h[i], &value) != NGX_OK) {
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return NGX_ERROR;
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}
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}
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}
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if (conf->trailers) {
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h = conf->trailers->elts;
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for (i = 0; i < conf->trailers->nelts; i++) {
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if (!safe_status && !h[i].always) {
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continue;
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}
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r->expect_trailers = 1;
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break;
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}
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}
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return ngx_http_next_header_filter(r);
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}
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static ngx_int_t
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ngx_http_trailers_filter(ngx_http_request_t *r, ngx_chain_t *in)
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{
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ngx_str_t value;
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ngx_uint_t i, safe_status;
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ngx_chain_t *cl;
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ngx_table_elt_t *t;
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ngx_http_header_val_t *h;
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ngx_http_headers_conf_t *conf;
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conf = ngx_http_get_module_loc_conf(r, ngx_http_headers_filter_module);
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if (in == NULL
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|| conf->trailers == NULL
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|| !r->expect_trailers
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|| r->header_only)
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{
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return ngx_http_next_body_filter(r, in);
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}
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for (cl = in; cl; cl = cl->next) {
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if (cl->buf->last_buf) {
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break;
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}
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}
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if (cl == NULL) {
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return ngx_http_next_body_filter(r, in);
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}
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switch (r->headers_out.status) {
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case NGX_HTTP_OK:
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case NGX_HTTP_CREATED:
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case NGX_HTTP_NO_CONTENT:
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case NGX_HTTP_PARTIAL_CONTENT:
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case NGX_HTTP_MOVED_PERMANENTLY:
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case NGX_HTTP_MOVED_TEMPORARILY:
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case NGX_HTTP_SEE_OTHER:
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case NGX_HTTP_NOT_MODIFIED:
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case NGX_HTTP_TEMPORARY_REDIRECT:
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case NGX_HTTP_PERMANENT_REDIRECT:
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safe_status = 1;
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break;
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default:
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safe_status = 0;
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break;
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}
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h = conf->trailers->elts;
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for (i = 0; i < conf->trailers->nelts; i++) {
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if (!safe_status && !h[i].always) {
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continue;
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}
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if (ngx_http_complex_value(r, &h[i].value, &value) != NGX_OK) {
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return NGX_ERROR;
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}
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if (value.len) {
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t = ngx_list_push(&r->headers_out.trailers);
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if (t == NULL) {
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return NGX_ERROR;
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}
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t->key = h[i].key;
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t->value = value;
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t->hash = 1;
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}
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}
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return ngx_http_next_body_filter(r, in);
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}
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static ngx_int_t
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ngx_http_set_expires(ngx_http_request_t *r, ngx_http_headers_conf_t *conf)
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{
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char *err;
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size_t len;
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time_t now, expires_time, max_age;
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ngx_str_t value;
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ngx_int_t rc;
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ngx_table_elt_t *e, *cc;
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ngx_http_expires_t expires;
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expires = conf->expires;
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expires_time = conf->expires_time;
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if (conf->expires_value != NULL) {
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if (ngx_http_complex_value(r, conf->expires_value, &value) != NGX_OK) {
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return NGX_ERROR;
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}
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rc = ngx_http_parse_expires(&value, &expires, &expires_time, &err);
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if (rc != NGX_OK) {
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return NGX_OK;
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}
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if (expires == NGX_HTTP_EXPIRES_OFF) {
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return NGX_OK;
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}
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}
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e = r->headers_out.expires;
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if (e == NULL) {
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e = ngx_list_push(&r->headers_out.headers);
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if (e == NULL) {
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return NGX_ERROR;
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}
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r->headers_out.expires = e;
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e->next = NULL;
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e->hash = 1;
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ngx_str_set(&e->key, "Expires");
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}
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len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT");
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e->value.len = len - 1;
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cc = r->headers_out.cache_control;
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if (cc == NULL) {
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cc = ngx_list_push(&r->headers_out.headers);
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if (cc == NULL) {
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e->hash = 0;
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return NGX_ERROR;
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}
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r->headers_out.cache_control = cc;
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cc->next = NULL;
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cc->hash = 1;
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ngx_str_set(&cc->key, "Cache-Control");
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} else {
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for (cc = cc->next; cc; cc = cc->next) {
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cc->hash = 0;
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}
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cc = r->headers_out.cache_control;
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cc->next = NULL;
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}
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if (expires == NGX_HTTP_EXPIRES_EPOCH) {
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e->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT";
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ngx_str_set(&cc->value, "no-cache");
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return NGX_OK;
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}
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if (expires == NGX_HTTP_EXPIRES_MAX) {
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e->value.data = (u_char *) "Thu, 31 Dec 2037 23:55:55 GMT";
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/* 10 years */
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ngx_str_set(&cc->value, "max-age=315360000");
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return NGX_OK;
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}
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e->value.data = ngx_pnalloc(r->pool, len);
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if (e->value.data == NULL) {
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e->hash = 0;
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cc->hash = 0;
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return NGX_ERROR;
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}
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if (expires_time == 0 && expires != NGX_HTTP_EXPIRES_DAILY) {
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ngx_memcpy(e->value.data, ngx_cached_http_time.data,
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ngx_cached_http_time.len + 1);
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ngx_str_set(&cc->value, "max-age=0");
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return NGX_OK;
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}
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now = ngx_time();
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if (expires == NGX_HTTP_EXPIRES_DAILY) {
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expires_time = ngx_next_time(expires_time);
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max_age = expires_time - now;
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} else if (expires == NGX_HTTP_EXPIRES_ACCESS
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|| r->headers_out.last_modified_time == -1)
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{
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max_age = expires_time;
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expires_time += now;
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} else {
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expires_time += r->headers_out.last_modified_time;
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max_age = expires_time - now;
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}
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ngx_http_time(e->value.data, expires_time);
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if (conf->expires_time < 0 || max_age < 0) {
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ngx_str_set(&cc->value, "no-cache");
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return NGX_OK;
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}
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cc->value.data = ngx_pnalloc(r->pool,
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sizeof("max-age=") + NGX_TIME_T_LEN + 1);
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if (cc->value.data == NULL) {
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cc->hash = 0;
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return NGX_ERROR;
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}
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cc->value.len = ngx_sprintf(cc->value.data, "max-age=%T", max_age)
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- cc->value.data;
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_parse_expires(ngx_str_t *value, ngx_http_expires_t *expires,
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time_t *expires_time, char **err)
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{
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ngx_uint_t minus;
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if (*expires != NGX_HTTP_EXPIRES_MODIFIED) {
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if (value->len == 5 && ngx_strncmp(value->data, "epoch", 5) == 0) {
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*expires = NGX_HTTP_EXPIRES_EPOCH;
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return NGX_OK;
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}
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if (value->len == 3 && ngx_strncmp(value->data, "max", 3) == 0) {
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*expires = NGX_HTTP_EXPIRES_MAX;
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return NGX_OK;
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}
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if (value->len == 3 && ngx_strncmp(value->data, "off", 3) == 0) {
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*expires = NGX_HTTP_EXPIRES_OFF;
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return NGX_OK;
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}
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}
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if (value->len && value->data[0] == '@') {
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value->data++;
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value->len--;
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minus = 0;
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if (*expires == NGX_HTTP_EXPIRES_MODIFIED) {
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*err = "daily time cannot be used with \"modified\" parameter";
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return NGX_ERROR;
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}
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*expires = NGX_HTTP_EXPIRES_DAILY;
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} else if (value->len && value->data[0] == '+') {
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value->data++;
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value->len--;
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minus = 0;
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} else if (value->len && value->data[0] == '-') {
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value->data++;
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value->len--;
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minus = 1;
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} else {
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minus = 0;
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}
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*expires_time = ngx_parse_time(value, 1);
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if (*expires_time == (time_t) NGX_ERROR) {
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*err = "invalid value";
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return NGX_ERROR;
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}
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if (*expires == NGX_HTTP_EXPIRES_DAILY
|
|
&& *expires_time > 24 * 60 * 60)
|
|
{
|
|
*err = "daily time value must be less than 24 hours";
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
if (minus) {
|
|
*expires_time = - *expires_time;
|
|
}
|
|
|
|
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_multi_header_lines(ngx_http_request_t *r,
|
|
ngx_http_header_val_t *hv, ngx_str_t *value)
|
|
{
|
|
ngx_table_elt_t *h, **ph;
|
|
|
|
if (value->len == 0) {
|
|
return NGX_OK;
|
|
}
|
|
|
|
h = ngx_list_push(&r->headers_out.headers);
|
|
if (h == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
h->hash = 1;
|
|
h->key = hv->key;
|
|
h->value = *value;
|
|
|
|
ph = (ngx_table_elt_t **) ((char *) &r->headers_out + hv->offset);
|
|
|
|
while (*ph) { ph = &(*ph)->next; }
|
|
|
|
*ph = h;
|
|
h->next = NULL;
|
|
|
|
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_parse_http_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->next = NULL;
|
|
}
|
|
|
|
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->trailers = NULL;
|
|
* conf->expires_time = 0;
|
|
* conf->expires_value = NULL;
|
|
*/
|
|
|
|
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;
|
|
conf->expires_value = prev->expires_value;
|
|
|
|
if (conf->expires == NGX_HTTP_EXPIRES_UNSET) {
|
|
conf->expires = NGX_HTTP_EXPIRES_OFF;
|
|
}
|
|
}
|
|
|
|
if (conf->headers == NULL) {
|
|
conf->headers = prev->headers;
|
|
}
|
|
|
|
if (conf->trailers == NULL) {
|
|
conf->trailers = prev->trailers;
|
|
}
|
|
|
|
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;
|
|
|
|
ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
ngx_http_top_body_filter = ngx_http_trailers_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;
|
|
|
|
char *err;
|
|
ngx_str_t *value;
|
|
ngx_int_t rc;
|
|
ngx_uint_t n;
|
|
ngx_http_complex_value_t cv;
|
|
ngx_http_compile_complex_value_t ccv;
|
|
|
|
if (hcf->expires != NGX_HTTP_EXPIRES_UNSET) {
|
|
return "is duplicate";
|
|
}
|
|
|
|
value = cf->args->elts;
|
|
|
|
if (cf->args->nelts == 2) {
|
|
|
|
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;
|
|
}
|
|
|
|
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
|
|
|
|
ccv.cf = cf;
|
|
ccv.value = &value[n];
|
|
ccv.complex_value = &cv;
|
|
|
|
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
if (cv.lengths != NULL) {
|
|
|
|
hcf->expires_value = ngx_palloc(cf->pool,
|
|
sizeof(ngx_http_complex_value_t));
|
|
if (hcf->expires_value == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
*hcf->expires_value = cv;
|
|
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
rc = ngx_http_parse_expires(&value[n], &hcf->expires, &hcf->expires_time,
|
|
&err);
|
|
if (rc != NGX_OK) {
|
|
return err;
|
|
}
|
|
|
|
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_array_t **headers;
|
|
ngx_http_header_val_t *hv;
|
|
ngx_http_set_header_t *set;
|
|
ngx_http_compile_complex_value_t ccv;
|
|
|
|
value = cf->args->elts;
|
|
|
|
headers = (ngx_array_t **) ((char *) hcf + cmd->offset);
|
|
|
|
if (*headers == NULL) {
|
|
*headers = ngx_array_create(cf->pool, 1,
|
|
sizeof(ngx_http_header_val_t));
|
|
if (*headers == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
}
|
|
|
|
hv = ngx_array_push(*headers);
|
|
if (hv == NULL) {
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
hv->key = value[1];
|
|
hv->handler = NULL;
|
|
hv->offset = 0;
|
|
hv->always = 0;
|
|
|
|
if (headers == &hcf->headers) {
|
|
hv->handler = ngx_http_add_header;
|
|
|
|
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));
|
|
|
|
} else {
|
|
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;
|
|
}
|
|
}
|
|
|
|
if (cf->args->nelts == 3) {
|
|
return NGX_CONF_OK;
|
|
}
|
|
|
|
if (ngx_strcmp(value[3].data, "always") != 0) {
|
|
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
"invalid parameter \"%V\"", &value[3]);
|
|
return NGX_CONF_ERROR;
|
|
}
|
|
|
|
hv->always = 1;
|
|
|
|
return NGX_CONF_OK;
|
|
}
|