[nginx] Request body: filters support.

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/42d9beeb22db
branches:  
changeset: 6049:42d9beeb22db
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Mon Mar 23 21:09:19 2015 +0300
description:
Request body: filters support.

diffstat:

 src/http/ngx_http.c              |   5 +++--
 src/http/ngx_http.h              |   1 +
 src/http/ngx_http_core_module.c  |  12 +++++++++++-
 src/http/ngx_http_core_module.h  |   4 ++++
 src/http/ngx_http_request_body.c |   8 +++-----
 5 files changed, 22 insertions(+), 8 deletions(-)

diffs (119 lines):

diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -69,8 +69,9 @@ static ngx_int_t ngx_http_add_addrs6(ngx
 ngx_uint_t   ngx_http_max_module;
 
 
-ngx_int_t  (*ngx_http_top_header_filter) (ngx_http_request_t *r);
-ngx_int_t  (*ngx_http_top_body_filter) (ngx_http_request_t *r, ngx_chain_t *ch);
+ngx_http_output_header_filter_pt  ngx_http_top_header_filter;
+ngx_http_output_body_filter_pt    ngx_http_top_body_filter;
+ngx_http_request_body_filter_pt   ngx_http_top_request_body_filter;
 
 
 ngx_str_t  ngx_http_html_default_types[] = {
diff --git a/src/http/ngx_http.h b/src/http/ngx_http.h
--- a/src/http/ngx_http.h
+++ b/src/http/ngx_http.h
@@ -177,6 +177,7 @@ extern ngx_str_t  ngx_http_html_default_
 
 extern ngx_http_output_header_filter_pt  ngx_http_top_header_filter;
 extern ngx_http_output_body_filter_pt    ngx_http_top_body_filter;
+extern ngx_http_request_body_filter_pt   ngx_http_top_request_body_filter;
 
 
 #endif /* _NGX_HTTP_H_INCLUDED_ */
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -26,6 +26,7 @@ static ngx_int_t ngx_http_core_find_stat
     ngx_http_location_tree_node_t *node);
 
 static ngx_int_t ngx_http_core_preconfiguration(ngx_conf_t *cf);
+static ngx_int_t ngx_http_core_postconfiguration(ngx_conf_t *cf);
 static void *ngx_http_core_create_main_conf(ngx_conf_t *cf);
 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
 static void *ngx_http_core_create_srv_conf(ngx_conf_t *cf);
@@ -779,7 +780,7 @@ static ngx_command_t  ngx_http_core_comm
 
 static ngx_http_module_t  ngx_http_core_module_ctx = {
     ngx_http_core_preconfiguration,        /* preconfiguration */
-    NULL,                                  /* postconfiguration */
+    ngx_http_core_postconfiguration,       /* postconfiguration */
 
     ngx_http_core_create_main_conf,        /* create main configuration */
     ngx_http_core_init_main_conf,          /* init main configuration */
@@ -3420,6 +3421,15 @@ ngx_http_core_preconfiguration(ngx_conf_
 }
 
 
+static ngx_int_t
+ngx_http_core_postconfiguration(ngx_conf_t *cf)
+{
+    ngx_http_top_request_body_filter = ngx_http_request_body_save_filter;
+
+    return NGX_OK;
+}
+
+
 static void *
 ngx_http_core_create_main_conf(ngx_conf_t *cf)
 {
diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -533,10 +533,14 @@ ngx_http_cleanup_t *ngx_http_cleanup_add
 typedef ngx_int_t (*ngx_http_output_header_filter_pt)(ngx_http_request_t *r);
 typedef ngx_int_t (*ngx_http_output_body_filter_pt)
     (ngx_http_request_t *r, ngx_chain_t *chain);
+typedef ngx_int_t (*ngx_http_request_body_filter_pt)
+    (ngx_http_request_t *r, ngx_chain_t *chain);
 
 
 ngx_int_t ngx_http_output_filter(ngx_http_request_t *r, ngx_chain_t *chain);
 ngx_int_t ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *chain);
+ngx_int_t ngx_http_request_body_save_filter(ngx_http_request_t *r,
+   ngx_chain_t *chain);
 
 
 ngx_int_t ngx_http_set_disable_symlinks(ngx_http_request_t *r,
diff --git a/src/http/ngx_http_request_body.c b/src/http/ngx_http_request_body.c
--- a/src/http/ngx_http_request_body.c
+++ b/src/http/ngx_http_request_body.c
@@ -24,8 +24,6 @@ static ngx_int_t ngx_http_request_body_l
     ngx_chain_t *in);
 static ngx_int_t ngx_http_request_body_chunked_filter(ngx_http_request_t *r,
     ngx_chain_t *in);
-static ngx_int_t ngx_http_request_body_save_filter(ngx_http_request_t *r,
-    ngx_chain_t *in);
 
 
 ngx_int_t
@@ -883,7 +881,7 @@ ngx_http_request_body_length_filter(ngx_
         ll = &tl->next;
     }
 
-    rc = ngx_http_request_body_save_filter(r, out);
+    rc = ngx_http_top_request_body_filter(r, out);
 
     ngx_chain_update_chains(r->pool, &rb->free, &rb->busy, &out,
                             (ngx_buf_tag_t) &ngx_http_read_client_request_body);
@@ -1035,7 +1033,7 @@ ngx_http_request_body_chunked_filter(ngx
         }
     }
 
-    rc = ngx_http_request_body_save_filter(r, out);
+    rc = ngx_http_top_request_body_filter(r, out);
 
     ngx_chain_update_chains(r->pool, &rb->free, &rb->busy, &out,
                             (ngx_buf_tag_t) &ngx_http_read_client_request_body);
@@ -1044,7 +1042,7 @@ ngx_http_request_body_chunked_filter(ngx
 }
 
 
-static ngx_int_t
+ngx_int_t
 ngx_http_request_body_save_filter(ngx_http_request_t *r, ngx_chain_t *in)
 {
 #if (NGX_DEBUG)