Mercurial > hg > nginx
comparison src/http/ngx_http_core_module.c @ 5733:e491b26fa5a1
Entity tags: downgrade strong etags to weak ones as needed.
See http://mailman.nginx.org/pipermail/nginx-devel/2013-November/004523.html.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Thu, 26 Jun 2014 02:21:01 +0400 |
| parents | 790ba7484bb6 |
| children | c5ec6944de98 |
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| 5732:d0ce06cb9be1 | 5733:e491b26fa5a1 |
|---|---|
| 1846 - etag->value.data; | 1846 - etag->value.data; |
| 1847 | 1847 |
| 1848 r->headers_out.etag = etag; | 1848 r->headers_out.etag = etag; |
| 1849 | 1849 |
| 1850 return NGX_OK; | 1850 return NGX_OK; |
| 1851 } | |
| 1852 | |
| 1853 | |
| 1854 void | |
| 1855 ngx_http_weak_etag(ngx_http_request_t *r) | |
| 1856 { | |
| 1857 size_t len; | |
| 1858 u_char *p; | |
| 1859 ngx_table_elt_t *etag; | |
| 1860 | |
| 1861 etag = r->headers_out.etag; | |
| 1862 | |
| 1863 if (etag == NULL) { | |
| 1864 return; | |
| 1865 } | |
| 1866 | |
| 1867 if (etag->value.len > 2 | |
| 1868 && etag->value.data[0] == 'W' | |
| 1869 && etag->value.data[1] == '/') | |
| 1870 { | |
| 1871 return; | |
| 1872 } | |
| 1873 | |
| 1874 if (etag->value.len < 1 || etag->value.data[0] != '"') { | |
| 1875 r->headers_out.etag->hash = 0; | |
| 1876 r->headers_out.etag = NULL; | |
| 1877 return; | |
| 1878 } | |
| 1879 | |
| 1880 p = ngx_pnalloc(r->pool, etag->value.len + 2); | |
| 1881 if (p == NULL) { | |
| 1882 r->headers_out.etag->hash = 0; | |
| 1883 r->headers_out.etag = NULL; | |
| 1884 return; | |
| 1885 } | |
| 1886 | |
| 1887 len = ngx_sprintf(p, "W/%V", &etag->value) - p; | |
| 1888 | |
| 1889 etag->value.data = p; | |
| 1890 etag->value.len = len; | |
| 1851 } | 1891 } |
| 1852 | 1892 |
| 1853 | 1893 |
| 1854 ngx_int_t | 1894 ngx_int_t |
| 1855 ngx_http_send_response(ngx_http_request_t *r, ngx_uint_t status, | 1895 ngx_http_send_response(ngx_http_request_t *r, ngx_uint_t status, |