Fix: FILES variable does not use multipart part name for key

CHANGES

@@ -1,6 +1,8 @@
 v3.x.y - YYYY-MMM-DD (to be released)
 -------------------------------------
 
+  - Fix: FILES variable does not use multipart part name for key
+    [Issue #2377 - @martinhsv]
   - Replaces put with setenv in SetEnv action
     [Issue #2469 - @martinhsv, @WGH-, @zimmerle]
   - Regression: Mark the test as failed in case of segfault.

src/request_body_processor/multipart.cc

@@ -1138,7 +1138,7 @@ int Multipart::multipart_complete(std::string *error) {
                 name.assign(m->m_filename);
             }
 
-            m_transaction->m_variableFiles.set(m->m_filename,
+            m_transaction->m_variableFiles.set(m->m_name,
                 m->m_filename, m->m_filenameOffset);
 
             m_transaction->m_variableFilesNames.set(m->m_name,

test/test-cases/regression/variable-FILES.json

@@ -2,7 +2,7 @@
   {  
     "enabled":1,
     "version_min":300000,
-    "title":"Testing Variables :: FILES (1/1)",
+    "title":"Testing Variables :: FILES (1/2)",
     "client":{  
       "ip":"200.249.12.31",
       "port":123
@@ -57,5 +57,64 @@
       "SecRuleEngine On",
       "SecRule FILES \"@contains small_text_file.txt\" \"id:1,phase:3,pass,t:trim\""
     ]
+  },
+  {
+    "enabled":1,
+    "version_min":300000,
+    "title":"Testing Variables :: FILES (2/2)",
+    "client":{
+      "ip":"200.249.12.31",
+      "port":123
+    },
+    "server":{
+      "ip":"200.249.12.31",
+      "port":80
+    },
+    "request":{
+      "headers":{
+        "Host":"localhost",
+        "User-Agent":"curl/7.38.0",
+        "Accept":"*/*",
+        "Content-Length":"330",
+        "Content-Type":"multipart/form-data; boundary=--------------------------756b6d74fa1a8ee2",
+        "Expect":"100-continue"
+      },
+      "uri":"/",
+      "method":"POST",
+      "body":[
+        "----------------------------756b6d74fa1a8ee2",
+        "Content-Disposition: form-data; name=\"name\"",
+        "",
+        "test",
+        "----------------------------756b6d74fa1a8ee2",
+        "Content-Disposition: form-data; name=\"filedata1\"; filename=\"myfile.txt\"",
+        "Content-Type: text/plain",
+        "",
+        "This is a very small test file..",
+        "----------------------------756b6d74fa1a8ee2",
+        "Content-Disposition: form-data; name=\"filedata2\"; filename=\"nextfile.txt\"",
+        "Content-Type: text/plain",
+        "",
+        "This is another very small test file..",
+        "----------------------------756b6d74fa1a8ee2--"
+      ]
+    },
+    "response":{
+      "headers":{
+        "Date":"Mon, 13 Jul 2015 20:02:41 GMT",
+        "Last-Modified":"Sun, 26 Oct 2014 22:33:37 GMT",
+        "Content-Type":"text/html"
+      },
+      "body":[
+        "no need."
+      ]
+    },
+    "expected":{
+      "http_code": 403
+    },
+    "rules":[
+      "SecRuleEngine On",
+      "SecRule FILES:filedata1 \"@contains myfile.txt\" \"id:1,phase:2,deny,status:403\""
+    ]
   }
 ]