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/*
* Copyright (C) Yichun Zhang (agentzh)
*/
#ifndef DDEBUG
#define DDEBUG 0
#endif
#include "ddebug.h"
#include "ngx_http_srcache_headers.h"
static ngx_int_t ngx_http_srcache_process_content_type(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_process_content_length(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_process_last_modified(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t
ngx_http_srcache_process_multi_header_lines(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_process_allow_ranges(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_process_accept_ranges(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_ignore_header_line(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_srcache_process_location(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
#if (NGX_HTTP_GZIP)
static ngx_int_t
ngx_http_srcache_process_content_encoding(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
#endif
ngx_http_srcache_header_t ngx_http_srcache_headers_in[] = {
{ ngx_string("Content-Type"),
ngx_http_srcache_process_content_type, 0 },
{ ngx_string("Content-Length"),
ngx_http_srcache_process_content_length, 0 },
{ ngx_string("Date"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, date) },
{ ngx_string("Last-Modified"),
ngx_http_srcache_process_last_modified, 0 },
{ ngx_string("ETag"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, etag) },
{ ngx_string("Server"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, server) },
{ ngx_string("WWW-Authenticate"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, www_authenticate) },
{ ngx_string("Location"),
ngx_http_srcache_process_location,
0 },
{ ngx_string("Refresh"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, refresh) },
{ ngx_string("Cache-Control"),
ngx_http_srcache_process_multi_header_lines,
offsetof(ngx_http_headers_out_t, cache_control) },
{ ngx_string("Expires"),
ngx_http_srcache_process_header_line,
offsetof(ngx_http_headers_out_t, expires) },
{ ngx_string("X-SRCache-Allow-Ranges"),
ngx_http_srcache_process_allow_ranges,
offsetof(ngx_http_headers_out_t, accept_ranges) },
{ ngx_string("Accept-Ranges"),
ngx_http_srcache_process_accept_ranges,
offsetof(ngx_http_headers_out_t, accept_ranges) },
{ ngx_string("Connection"),
ngx_http_srcache_ignore_header_line, 0 },
{ ngx_string("Keep-Alive"),
ngx_http_srcache_ignore_header_line, 0 },
#if (NGX_HTTP_GZIP)
{ ngx_string("Content-Encoding"),
ngx_http_srcache_process_content_encoding,
offsetof(ngx_http_headers_out_t, content_encoding) },
#endif
{ ngx_null_string, NULL, 0 }
};
ngx_int_t
ngx_http_srcache_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
ngx_uint_t offset)
{
ngx_table_elt_t *ho, **ph;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
if (offset) {
ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
*ph = ho;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_location(ngx_http_request_t *r, ngx_table_elt_t *h,
ngx_uint_t offset)
{
ngx_table_elt_t *ho;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
if (ho->value.data[0] != '/') {
r->headers_out.location = ho;
}
/*
* we do not set r->headers_out.location here to avoid the handling
* the local redirects without a host name by ngx_http_header_filter()
*/
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
ngx_uint_t offset)
{
u_char *p, *last;
r->headers_out.content_type_len = h->value.len;
r->headers_out.content_type = h->value;
r->headers_out.content_type_lowcase = NULL;
for (p = h->value.data; *p; p++) {
if (*p != ';') {
continue;
}
last = p;
while (*++p == ' ') { /* void */ }
if (*p == '\0') {
return NGX_OK;
}
if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
continue;
}
p += 8;
r->headers_out.content_type_len = last - h->value.data;
if (*p == '"') {
p++;
}
last = h->value.data + h->value.len;
if (*(last - 1) == '"') {
last--;
}
r->headers_out.charset.len = last - p;
r->headers_out.charset.data = p;
return NGX_OK;
}
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_content_length(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
ngx_table_elt_t *ho;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
r->headers_out.content_length = ho;
r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_last_modified(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
#if 1
ngx_table_elt_t *ho;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
r->headers_out.last_modified = ho;
#endif
r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
h->value.len);
dd("setting last-modified-time: %d",
(int) r->headers_out.last_modified_time);
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_multi_header_lines(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
#if defined(nginx_version) && nginx_version < 1023000
ngx_array_t *pa;
#endif
ngx_table_elt_t *ho, **ph;
#if defined(nginx_version) && nginx_version >= 1023000
ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
while (*ph) {
ph = &(*ph)->next;
}
#else
pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
if (pa->elts == NULL) {
if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
{
return NGX_ERROR;
}
}
ph = ngx_array_push(pa);
if (ph == NULL) {
return NGX_ERROR;
}
#endif
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
*ph = ho;
#if defined(nginx_version) && nginx_version >= 1023000
ho->next = NULL;
#endif
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_accept_ranges(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
ngx_table_elt_t *ho;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
r->headers_out.accept_ranges = ho;
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_process_allow_ranges(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
r->allow_ranges = 1;
return NGX_OK;
}
static ngx_int_t
ngx_http_srcache_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
ngx_uint_t offset)
{
return NGX_OK;
}
#if (NGX_HTTP_GZIP)
static ngx_int_t
ngx_http_srcache_process_content_encoding(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset)
{
ngx_table_elt_t *ho;
ho = ngx_list_push(&r->headers_out.headers);
if (ho == NULL) {
return NGX_ERROR;
}
*ho = *h;
r->headers_out.content_encoding = ho;
return NGX_OK;
}
#endif
/* vi:set ft=c ts=4 sw=4 et fdm=marker: */
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