Author: mdounin
Date: 2012-11-21 01:05:08 +0000 (Wed, 21 Nov 2012)
New Revision: 4929
URL: http://trac.nginx.org/nginx/changeset/4929/nginx

Log:
Request body: $content_length variable to honor real body size.

This allows to handle requests with chunked body by fastcgi and uwsgi
modules, and also simplifies handling of various request body modifications.


Modified:
trunk/src/http/ngx_http_variables.c

Modified: trunk/src/http/ngx_http_variables.c
===================================================================
--- trunk/src/http/ngx_http_variables.c 2012-11-21 01:03:48 UTC (rev 4928)
+++ trunk/src/http/ngx_http_variables.c 2012-11-21 01:05:08 UTC (rev 4929)
@@ -39,6 +39,8 @@
ngx_http_variable_value_t *v, uintptr_t data);
#endif

+static ngx_int_t ngx_http_variable_content_length(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_variable_host(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_variable_binary_remote_addr(ngx_http_request_t *r,
@@ -153,8 +155,8 @@
{ ngx_string("http_cookie"), NULL, ngx_http_variable_headers,
offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 },

- { ngx_string("content_length"), NULL, ngx_http_variable_header,
- offsetof(ngx_http_request_t, headers_in.content_length), 0, 0 },
+ { ngx_string("content_length"), NULL, ngx_http_variable_content_length,
+ 0, 0, 0 },

{ ngx_string("content_type"), NULL, ngx_http_variable_header,
offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 },
@@ -990,6 +992,39 @@


static ngx_int_t
+ngx_http_variable_content_length(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data)
+{
+ u_char *p;
+
+ if (r->headers_in.content_length) {
+ v->len = r->headers_in.content_length->value.len;
+ v->data = r->headers_in.content_length->value.data;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+
+ } else if (r->headers_in.content_length_n >= 0) {
+ p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN);
+ if (p == NULL) {
+ return NGX_ERROR;
+ }
+
+ v->len = ngx_sprintf(p, "%O", r->headers_in.content_length_n) - p;
+ v->data = p;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+
+ } else {
+ v->not_found = 1;
+ }
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{

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