From 5c4733f1abba4f8e3398a42fa5d18e3e7117c086 Mon Sep 17 00:00:00 2001
From: ivanr <ivanr@9017d574-64ec-4062-9424-5e00b32a252b>
Date: Tue, 2 Feb 2010 13:48:30 +0000
Subject: [PATCH] Add REQUEST_BODY_LENGTH.

---
 CHANGES                |  5 ++++-
 apache2/re_variables.c | 20 ++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 17cfb62a..e745cc79 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,7 +1,10 @@
 
-1 Feb 2010 - trunk
+2 Feb 2010 - trunk
 -------------------
 
+ * Add REQUEST_BODY_LENGTH, which contains the number of request body
+   bytes read. [Ivan Ristic]
+
  * Integrate with mod_log_config using the %{VARNAME}M format string.
    (MODSEC-108) [Ivan Ristic]
 
diff --git a/apache2/re_variables.c b/apache2/re_variables.c
index 1b0dab18..bc9b9b1d 100644
--- a/apache2/re_variables.c
+++ b/apache2/re_variables.c
@@ -1765,6 +1765,15 @@ static int var_request_body_generate(modsec_rec *msr, msre_var *var, msre_rule *
     return 0;
 }
 
+/* REQUEST_BODY_LENGTH */
+
+static int var_request_body_length_generate(modsec_rec *msr, msre_var *var, msre_rule *rule,
+    apr_table_t *vartab, apr_pool_t *mptmp)
+{
+    char *value = apr_psprintf(mptmp, "%d", msr->msc_reqbody_length);
+    return var_simple_generate(var, vartab, mptmp, value);
+}
+
 /* REQUEST_COOKIES */
 
 static int var_request_cookies_generate(modsec_rec *msr, msre_var *var, msre_rule *rule,
@@ -2778,6 +2787,17 @@ void msre_engine_register_default_variables(msre_engine *engine) {
         VAR_CACHE,
         PHASE_REQUEST_BODY
     );
+    
+    /* REQUEST_BODY_LENGTH */
+    msre_engine_variable_register(engine,
+        "REQUEST_BODY_LENGTH",
+        VAR_SIMPLE,
+        0, 0,
+        NULL,
+        var_request_body_length_generate,
+        VAR_CACHE,
+        PHASE_REQUEST_BODY
+    );
 
     /* REQUEST_COOKIES */
     msre_engine_variable_register(engine,