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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
ngx_http_header_t ngx_http_headers_in[] = {
{ ngx_string("Host"), offsetof(ngx_http_headers_in_t, host) },
{ ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection) },
{ ngx_string("If-Modified-Since"),
offsetof(ngx_http_headers_in_t, if_modified_since) },
{ ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent) },
{ ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer) },
{ ngx_string("Content-Length"),
offsetof(ngx_http_headers_in_t, content_length) },
{ ngx_string("Accept-Encoding"),
offsetof(ngx_http_headers_in_t, accept_encoding) },
{ ngx_string("Range"), offsetof(ngx_http_headers_in_t, range) },
#if 0
{ ngx_string("If-Range"), offsetof(ngx_http_headers_in_t, if_range) },
#endif
{ ngx_string("Authorization"),
offsetof(ngx_http_headers_in_t, authorization) },
{ ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive) },
{ ngx_null_string, 0 }
};
ngx_http_header_t ngx_http_headers_out[] = {
{ ngx_string("Server"), offsetof(ngx_http_headers_out_t, server) },
{ ngx_string("Date"), offsetof(ngx_http_headers_out_t, date) },
{ ngx_string("Content-Type"),
offsetof(ngx_http_headers_out_t, content_type) },
{ ngx_string("Content-Length"),
offsetof(ngx_http_headers_out_t, content_length) },
{ ngx_string("Content-Encoding"),
offsetof(ngx_http_headers_out_t, content_encoding) },
{ ngx_string("Location"), offsetof(ngx_http_headers_out_t, location) },
{ ngx_string("Last-Modified"),
offsetof(ngx_http_headers_out_t, last_modified) },
{ ngx_string("Accept-Ranges"),
offsetof(ngx_http_headers_out_t, accept_ranges) },
{ ngx_null_string, 0 }
};
ngx_table_elt_t *ngx_http_add_header(void *header,
ngx_http_header_t *http_headers)
{
int i, j;
char *prev;
ngx_table_t *headers;
ngx_table_elt_t *h, *new;
headers = *(ngx_table_t **) header;
prev = headers->elts;
if (!(new = ngx_push_table(headers))) {
return NULL;
}
if (prev == headers->elts) {
return new;
}
/*
* When table is relocated we need to update pointers in r->headers_in,
* r->headers_out, etc. However this relocation should be very rare
* because we preallocate enough space for the number of the real world
* HTTP headers.
*/
ngx_log_error(NGX_LOG_ALERT, headers->pool->log, 0,
"header table is small, %d elements", headers->nelts - 1);
h = headers->elts;
for (i = 0; i < headers->nelts - 1; i++) {
if (h[i].key.len == 0) {
continue;
}
for (j = 0; http_headers[j].name.len != 0; j++) {
if (http_headers[j].name.len != h[i].key.len) {
continue;
}
if (ngx_strcasecmp(http_headers[j].name.data, h[i].key.data) == 0) {
*((ngx_table_elt_t **)
((char *) header + http_headers[j].offset)) = &h[i];
break;
}
}
}
return new;
}
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