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Headers filter: local variables for config, no functional changes.

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This commit is contained in:
Maxim Dounin 2014-12-11 23:42:06 +03:00
parent fb7d63250e
commit cf21308885
1 changed files with 31 additions and 27 deletions
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58
src/http/modules/ngx_http_headers_filter_module.c
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@ -209,28 +209,32 @@ ngx_http_headers_filter(ngx_http_request_t *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;
size_t len;
time_t now, expires_time, max_age;
ngx_uint_t i;
ngx_table_elt_t *e, *cc, **ccp;
ngx_http_expires_t expires;
expires = r->headers_out.expires;
expires = conf->expires;
expires_time = conf->expires_time;
if (expires == NULL) {
e = r->headers_out.expires;
expires = ngx_list_push(&r->headers_out.headers);
if (expires == NULL) {
if (e == NULL) {
e = ngx_list_push(&r->headers_out.headers);
if (e == NULL) {
return NGX_ERROR;
}
r->headers_out.expires = expires;
r->headers_out.expires = e;
expires->hash = 1;
ngx_str_set(&expires->key, "Expires");
e->hash = 1;
ngx_str_set(&e->key, "Expires");
}
len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT");
expires->value.len = len - 1;
e->value.len = len - 1;
ccp = r->headers_out.cache_control.elts;
@ -265,26 +269,26 @@ ngx_http_set_expires(ngx_http_request_t *r, ngx_http_headers_conf_t *conf)
cc = ccp[0];
}
if (conf->expires == NGX_HTTP_EXPIRES_EPOCH) {
expires->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT";
if (expires == NGX_HTTP_EXPIRES_EPOCH) {
e->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";
if (expires == NGX_HTTP_EXPIRES_MAX) {
e->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) {
e->value.data = ngx_pnalloc(r->pool, len);
if (e->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,
if (expires_time == 0 && expires != NGX_HTTP_EXPIRES_DAILY) {
ngx_memcpy(e->value.data, ngx_cached_http_time.data,
ngx_cached_http_time.len + 1);
ngx_str_set(&cc->value, "max-age=0");
return NGX_OK;
@ -292,22 +296,22 @@ ngx_http_set_expires(ngx_http_request_t *r, ngx_http_headers_conf_t *conf)
now = ngx_time();
if (conf->expires == NGX_HTTP_EXPIRES_DAILY) {
expires_time = ngx_next_time(conf->expires_time);
if (expires == NGX_HTTP_EXPIRES_DAILY) {
expires_time = ngx_next_time(expires_time);
max_age = expires_time - now;
} else if (conf->expires == NGX_HTTP_EXPIRES_ACCESS
} else if (expires == NGX_HTTP_EXPIRES_ACCESS
|| r->headers_out.last_modified_time == -1)
{
expires_time = now + conf->expires_time;
max_age = conf->expires_time;
max_age = expires_time;
expires_time += now;
} else {
expires_time = r->headers_out.last_modified_time + conf->expires_time;
expires_time += r->headers_out.last_modified_time;
max_age = expires_time - now;
}
ngx_http_time(expires->value.data, expires_time);
ngx_http_time(e->value.data, expires_time);
if (conf->expires_time < 0 || max_age < 0) {
ngx_str_set(&cc->value, "no-cache");