/*
  zip_source_close.c -- close zip_source (stop reading)
  Copyright (C) 2009-2014 Dieter Baron and Thomas Klausner

  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  3. The names of the authors may not be used to endorse or promote
     products derived from this software without specific prior
     written permission.
 
  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  IN CONTRACT, STRICT LIABILITY, OR
/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2017 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/
#if !defined(_UEFI)
#include <windows.h>
#include <stdio.h>
#else
#include "Tcdefs.h"
#pragma warning( disable : 4706 )  //  assignment within conditional expression
#endif
#include "Xml.h"


static BOOL BeginsWith (char *string, char *subString)
{
	while (*string++ == *subString++)
	{
		if (*subString == 0) return TRUE;
		if (*string == 0) return FALSE;
	}

	return FALSE;
}


char *XmlNextNode (char *xmlNode)
{
	char *t = xmlNode + 1;
	while ((t = strchr (t, '<')) != NULL)
	{
		if (t[1] != '/')
			return t;

		t++;
	}

	return NULL;
}


char *XmlFindElement (char *xmlNode, char *nodeName)
{
	char *t = xmlNode;
	size_t nameLen = strlen (nodeName);

	do
	{
		if (BeginsWith (t + 1, nodeName)
			&& (t[nameLen + 1] == '>'
			|| t[nameLen + 1] == ' ')) return t;

	} while (t = XmlNextNode (t));

	return NULL;
}


char *XmlFindElementByAttributeValue (char *xml, char *nodeName, const char *attrName, const char *attrValue)
{
	char attr[2048];

	while (xml = XmlFindElement (xml, nodeName))
	{
		XmlGetAttributeText (xml, attrName, attr, sizeof (attr));
		if (strcmp (attr, attrValue) == 0)
			return xml;

		xml++;
	}

	return NULL;
}


char *XmlGetAttributeText (char *xmlNode, const char *xmlAttrName, char *xmlAttrValue, int xmlAttrValueSize)
{
	char *t = xmlNode;
	char *e = xmlNode;
	int l = 0;

	xmlAttrValue[0] = 0;
	if (t[0] != '<') return NULL;

	e = strchr (e, '>');
	if (e == NULL) return NULL;

	while ((t = strstr (t, xmlAttrName)) && t < e)
	{
		char *o = t + strlen (xmlAttrName);
		if (t[-1] == ' '
			&&
			(BeginsWith (o, "=\"")
			|| BeginsWith (o, "= \"")
			|| BeginsWith (o, " =\"")
			|| BeginsWith (o, " = \""))
			)
			break;

		t++;
	}

	if (t == NULL || t > e) return NULL;

	t = ((char*)strchr (t, '"')) + 1;
	e = strchr (t, '"');
	l = (int)(e - t);
	if (e == NULL || l > xmlAttrValueSize) return NULL;

	memcpy (xmlAttrValue, t, l);
	xmlAttrValue[l] = 0;

	return xmlAttrValue;
}


char *XmlGetNodeText (char *xmlNode, char *xmlText, int xmlTextSize)
{
	char *t = xmlNode;
	char *e = xmlNode + 1;
	int l = 0, i = 0, j = 0;

	xmlText[0] = 0;

	if (t[0] != '<')
		return NULL;

	t = (char*) strchr (t, '>');
	if (t == NULL) return NULL;

	t++;
	e = strchr (e, '<');
	if (e == NULL) return NULL;

	l = (int)(e - t);
	if (e == NULL || l > xmlTextSize) return NULL;

	while (i < l)
	{
		if (BeginsWith (&t[i], "&lt;"))
		{
			xmlText[j++] = '<';
			i += 4;
			continue;
		}
		if (BeginsWith (&t[i], "&gt;"))
		{
			xmlText[j++] = '>';
			i += 4;
			continue;
		}
		if (BeginsWith (&t[i], "&amp;"))
		{
			xmlText[j++] = '&';
			i += 5;
			continue;
		}
		xmlText[j++] = t[i++];
	}
	xmlText[j] = 0;

	return t;
}


char *XmlQuoteText (const char *textSrc, char *textDst, int textDstMaxSize)
{
	char *textDstLast = textDst + textDstMaxSize - 1;

	if (textDstMaxSize == 0)
		return NULL;

	while (*textSrc != 0 && textDst <= textDstLast)
	{
		char c = *textSrc++;
		switch (c)
		{
		case '&':
			if (textDst + 6 > textDstLast)
				return NULL;
			strcpy (textDst, "&amp;");
			textDst += 5;
			continue;

		case '>':
			if (textDst + 5 > textDstLast)
				return NULL;
			strcpy (textDst, "&gt;");
			textDst += 4;
			continue;

		case '<':
			if (textDst + 5 > textDstLast)
				return NULL;
			strcpy (textDst, "&lt;");
			textDst += 4;
			continue;

		default:
			*textDst++ = c;
		}
	}

	if (textDst > textDstLast)
		return NULL;

	*textDst = 0;
	return textDst;
}

wchar_t *XmlQuoteTextW (const wchar_t *textSrc, wchar_t *textDst, int textDstMaxSize)
{
	wchar_t *textDstLast = textDst + textDstMaxSize - 1;

	if (textDstMaxSize == 0)
		return NULL;

	while (*textSrc != 0 && textDst <= textDstLast)
	{
		wchar_t c = *textSrc++;
		switch (c)
		{
		case L'&':
			if (textDst + 6 > textDstLast)
				return NULL;
			wcscpy (textDst, L"&amp;");
			textDst += 5;
			continue;

		case L'>':
			if (textDst + 5 > textDstLast)
				return NULL;
			wcscpy (textDst, L"&gt;");
			textDst += 4;
			continue;

		case L'<':
			if (textDst + 5 > textDstLast)
				return NULL;
			wcscpy (textDst, L"&lt;");
			textDst += 4;
			continue;

		default:
			*textDst++ = c;
		}
	}

	if (textDst > textDstLast)
		return NULL;

	*textDst = 0;
	return textDst;
}

#if !defined(_UEFI)
#pragma warning( default : 4706 )
int XmlWriteHeader (FILE *file)
{
	return fputws (L"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<VeraCrypt>", file);
}


int XmlWriteFooter (FILE *file)
{
	return fputws (L"\n</VeraCrypt>", file);
}
#endif !defined(_UEFI)