From: Maxim Dounin <mdounin@mdounin.ru>
Date: Mon, 4 Jun 2012 11:00:34 +0000 (+0000)
Subject: Merge of r4617: fastcgi padding fix.
X-Git-Tag: release-1.2.2~36
X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=245cf55736ea05c075c3a1ef0f06afba22b4ab21;p=nginx.git

Merge of r4617: fastcgi padding fix.

Fastcgi: fixed padding handling on fixed-size records.

Padding was incorrectly ignored on end request, empty stdout and stderr
fastcgi records.  This resulted in protocol desynchronization if fastcgi
application used these records with padding for some reason.

Reported by Ilia Vinokurov.
---

diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 65f0747a1..55c3aef29 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -1356,7 +1356,11 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
                 }
 
             } else {
-                f->state = ngx_http_fastcgi_st_version;
+                if (f->padding) {
+                    f->state = ngx_http_fastcgi_st_padding;
+                } else {
+                    f->state = ngx_http_fastcgi_st_version;
+                }
             }
 
             continue;
@@ -1689,7 +1693,12 @@ ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
             }
 
             if (f->type == NGX_HTTP_FASTCGI_STDOUT && f->length == 0) {
-                f->state = ngx_http_fastcgi_st_version;
+
+                if (f->padding) {
+                    f->state = ngx_http_fastcgi_st_padding;
+                } else {
+                    f->state = ngx_http_fastcgi_st_version;
+                }
 
                 if (!flcf->keep_conn) {
                     p->upstream_done = 1;
@@ -1702,7 +1711,13 @@ ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
             }
 
             if (f->type == NGX_HTTP_FASTCGI_END_REQUEST) {
-                f->state = ngx_http_fastcgi_st_version;
+
+                if (f->padding) {
+                    f->state = ngx_http_fastcgi_st_padding;
+                } else {
+                    f->state = ngx_http_fastcgi_st_version;
+                }
+
                 p->upstream_done = 1;
 
                 if (flcf->keep_conn) {
@@ -1775,7 +1790,11 @@ ngx_http_fastcgi_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
                 }
 
             } else {
-                f->state = ngx_http_fastcgi_st_version;
+                if (f->padding) {
+                    f->state = ngx_http_fastcgi_st_padding;
+                } else {
+                    f->state = ngx_http_fastcgi_st_version;
+                }
             }
 
             continue;