From: Maxim Dounin <mdounin@mdounin.ru>
Date: Thu, 31 Aug 2023 19:59:17 +0000 (+0300)
Subject: Upstream: fixed handling of Status headers without reason-phrase.
X-Git-Tag: release-1.25.3~26
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/static/gitweb.js?a=commitdiff_plain;h=fa46a5719924a5a4c48c515a903e0c46a4d98bcf;p=nginx.git

Upstream: fixed handling of Status headers without reason-phrase.

Status header with an empty reason-phrase, such as "Status: 404 ", is
valid per CGI specification, but looses the trailing space during parsing.
Currently, this results in "HTTP/1.1 404" HTTP status line in the response,
which violates HTTP specification due to missing trailing space.

With this change, only the status code is used from such short Status
header lines, so nginx will generate status line itself, with the space
and appropriate reason phrase if available.

Reported at:
https://mailman.nginx.org/pipermail/nginx/2023-August/EX7G4JUUHJWJE5UOAZMO5UD6OJILCYGX.html
---

diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index 2d9a18f90..b9890833d 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -2048,7 +2048,10 @@ ngx_http_fastcgi_process_header(ngx_http_request_t *r)
                     }
 
                     u->headers_in.status_n = status;
-                    u->headers_in.status_line = *status_line;
+
+                    if (status_line->len > 3) {
+                        u->headers_in.status_line = *status_line;
+                    }
 
                 } else if (u->headers_in.location) {
                     u->headers_in.status_n = 302;
diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
index 9fc18dcd3..3acea87b7 100644
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -1153,7 +1153,10 @@ ngx_http_scgi_process_header(ngx_http_request_t *r)
                 }
 
                 u->headers_in.status_n = status;
-                u->headers_in.status_line = *status_line;
+
+                if (status_line->len > 3) {
+                    u->headers_in.status_line = *status_line;
+                }
 
             } else if (u->headers_in.location) {
                 u->headers_in.status_n = 302;
diff --git a/src/http/modules/ngx_http_uwsgi_module.c b/src/http/modules/ngx_http_uwsgi_module.c
index e4f721bb0..c1731ff48 100644
--- a/src/http/modules/ngx_http_uwsgi_module.c
+++ b/src/http/modules/ngx_http_uwsgi_module.c
@@ -1381,7 +1381,10 @@ ngx_http_uwsgi_process_header(ngx_http_request_t *r)
                 }
 
                 u->headers_in.status_n = status;
-                u->headers_in.status_line = *status_line;
+
+                if (status_line->len > 3) {
+                    u->headers_in.status_line = *status_line;
+                }
 
             } else if (u->headers_in.location) {
                 u->headers_in.status_n = 302;