From abf3adcd2f37f4e278fc9ef7634ca0c8f5171893 Mon Sep 17 00:00:00 2001
From: kavsrf <kavsrf@gmail.com>
Date: Sun, 5 Feb 2017 17:31:28 +0300
Subject: picture password bmp and DcsProp can be in secregion on separate
 flash

Tables overlay configuration commands
---
 Library/VeraCryptLib/DcsConfig.c    |  4 +++-
 Library/VeraCryptLib/DcsConfig.h    |  2 ++
 Library/VeraCryptLib/DcsVeraCrypt.c | 30 +++++++++++++++++-------------
 3 files changed, 22 insertions(+), 14 deletions(-)

(limited to 'Library/VeraCryptLib')

diff --git a/Library/VeraCryptLib/DcsConfig.c b/Library/VeraCryptLib/DcsConfig.c
index 00aa5f8..e29e767 100644
--- a/Library/VeraCryptLib/DcsConfig.c
+++ b/Library/VeraCryptLib/DcsConfig.c
@@ -23,6 +23,8 @@ https://opensource.org/licenses/Apache-2.0
 //////////////////////////////////////////////////////////////////////////
 char *gConfigBuffer = NULL;
 UINTN	gConfigBufferSize = 0;
+char *gConfigBufferUpdated = NULL;
+UINTN	gConfigBufferUpdatedSize = 0;
 
 BOOLEAN
 ConfigRead(char *configKey, char *configValue, int maxValueSize)
@@ -35,7 +37,7 @@ ConfigRead(char *configKey, char *configValue, int maxValueSize)
 		}
 	}
 
-	xml = gConfigBuffer;
+	xml = gConfigBufferUpdated != NULL? gConfigBufferUpdated : gConfigBuffer;
 	if (xml != NULL)
 	{
 		xml = XmlFindElementByAttributeValue(xml, "config", "key", configKey);
diff --git a/Library/VeraCryptLib/DcsConfig.h b/Library/VeraCryptLib/DcsConfig.h
index 04719d9..cc803ce 100644
--- a/Library/VeraCryptLib/DcsConfig.h
+++ b/Library/VeraCryptLib/DcsConfig.h
@@ -22,6 +22,8 @@ https://opensource.org/licenses/Apache-2.0
 //////////////////////////////////////////////////////////////////////////
 extern char    *gConfigBuffer;
 extern UINTN    gConfigBufferSize;
+extern char *gConfigBufferUpdated;
+extern UINTN	gConfigBufferUpdatedSize;
 
 BOOLEAN ConfigRead(char *configKey, char *configValue, int maxValueSize);
 int ConfigReadInt(char *configKey, int defaultValue);
diff --git a/Library/VeraCryptLib/DcsVeraCrypt.c b/Library/VeraCryptLib/DcsVeraCrypt.c
index cc85f4e..f4a1e27 100644
--- a/Library/VeraCryptLib/DcsVeraCrypt.c
+++ b/Library/VeraCryptLib/DcsVeraCrypt.c
@@ -85,6 +85,10 @@ CHAR8* gOnExitNotFound = NULL;
 // Authorize
 /////////////////////////////////////////////////////////////////////////
 
+#define VCCONFIG_ALLOC(data, size)       \
+        if(data == NULL) MEM_FREE(data); \
+        data = MEM_ALLOC(size);
+
 VOID
 VCAuthLoadConfig() 
 {
@@ -96,30 +100,30 @@ VCAuthLoadConfig()
 	SetMem(&gAuthPassword, sizeof(gAuthPassword), 0);
 
 	strTemp = MEM_ALLOC(MAX_MSG);
-	gPasswordPictureFileName = MEM_ALLOC(MAX_MSG * 2);
+	VCCONFIG_ALLOC(gPasswordPictureFileName, MAX_MSG * 2);
 	ConfigReadString("PasswordPicture", "\\EFI\\VeraCrypt\\login.bmp", strTemp, MAX_MSG);
 	AsciiStrToUnicodeStr(strTemp, gPasswordPictureFileName);
 	MEM_FREE(strTemp);
 
-	gPasswordPictureChars = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gPasswordPictureChars, MAX_MSG);
 	ConfigReadString("PictureChars", gPasswordPictureCharsDefault, gPasswordPictureChars, MAX_MSG);
 	gPasswordPictureCharsLen = strlen(gPasswordPictureChars);
 
 	gAuthPasswordType = ConfigReadInt("PasswordType", 0);
 
-	gAuthPasswordMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gAuthPasswordMsg, MAX_MSG);
 	ConfigReadString("PasswordMsg", "Password:", gAuthPasswordMsg, MAX_MSG);
 
 	gAutoLogin = (UINT8)ConfigReadInt("AutoLogin", 0);
-	gAutoPassword = MEM_ALLOC(MAX_PASSWORD);
+	VCCONFIG_ALLOC(gAutoPassword, MAX_PASSWORD);
 	ConfigReadString("AutoPassword", "", gAutoPassword, MAX_PASSWORD);
 
-	gAuthPimMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gAuthPimMsg, MAX_MSG);
 	gAuthPimRqt = ConfigReadInt("PimRqt", 1);
 	gAuthPim = ConfigReadInt("Pim", 0);
 	ConfigReadString("PimMsg", "Pim:", gAuthPimMsg, MAX_MSG);
 
-	gAuthHashMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gAuthHashMsg, MAX_MSG);
 	gAuthHashRqt = ConfigReadInt("HashRqt", 1);
 	gAuthHash = ConfigReadInt("Hash", 0);
 
@@ -145,15 +149,15 @@ VCAuthLoadConfig()
 
 	gDcsBootForce = ConfigReadInt("DcsBootForce", 1);                 // Ask password even if no USB marked found. 
 
-	gForcePasswordMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gForcePasswordMsg, MAX_MSG);
 	ConfigReadString("ForcePasswordMsg", gAuthPasswordMsg, gForcePasswordMsg, MAX_MSG);
 	gForcePasswordType = ConfigReadInt("ForcePasswordType", gAuthPasswordType);
 	gForcePasswordProgress = (UINT8)ConfigReadInt("ForcePasswordProgress", gPasswordProgress);
 
 	gAuthRetry = ConfigReadInt("AuthorizeRetry", 10);
-	gAuthStartMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gAuthStartMsg, MAX_MSG);
 	ConfigReadString("AuthStartMsg", "Authorizing...\n\r", gAuthStartMsg, MAX_MSG);
-	gAuthErrorMsg = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gAuthErrorMsg, MAX_MSG);
 	ConfigReadString("AuthErrorMsg", "Authorization failed. Wrong password, PIM or hash.\n\r", gAuthErrorMsg, MAX_MSG);
 
 	gRUD = ConfigReadInt("RUD", 0);
@@ -166,11 +170,11 @@ VCAuthLoadConfig()
 	gSCLocked = ConfigReadInt("SCLocked", 0);
 
 	// Actions for DcsInt
-	gOnExitSuccess = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gOnExitSuccess, MAX_MSG);
 	ConfigReadString("ActionSuccess", "Exit", gOnExitSuccess, MAX_MSG);
-	gOnExitNotFound = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gOnExitNotFound, MAX_MSG);
 	ConfigReadString("ActionNotFound", "Exit", gOnExitNotFound, MAX_MSG);
-	gOnExitFailed = MEM_ALLOC(MAX_MSG);
+	VCCONFIG_ALLOC(gOnExitFailed, MAX_MSG);
 	ConfigReadString("ActionFailed", "Exit", gOnExitFailed, MAX_MSG);
 
 	strTemp = MEM_ALLOC(MAX_MSG);
@@ -178,7 +182,7 @@ VCAuthLoadConfig()
 	if (strTemp[0] != 0) {
 		EFI_GUID g;
 		if (AsciiStrToGuid(&g, strTemp)) {
-			gPartitionGuidOS = MEM_ALLOC(sizeof(EFI_GUID));
+			VCCONFIG_ALLOC(gPartitionGuidOS, sizeof(EFI_GUID));
 			if (gPartitionGuidOS != NULL) {
 				memcpy(gPartitionGuidOS, &g, sizeof(g));
 			}
-- 
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