dfhack/library/VersionInfoFactory.cpp

779 lines
24 KiB
C++

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/*
https://github.com/peterix/dfhack
Copyright (c) 2009-2011 Petr Mrázek (peterix@gmail.com)
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This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must
not claim that you wrote the original software. If you use this
software in a product, an acknowledgment in the product documentation
would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
*/
#include "Internal.h"
#include <string>
#include <vector>
#include <algorithm>
#include <map>
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#include <iostream>
using namespace std;
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#include "VersionInfoFactory.h"
#include "VersionInfo.h"
#include "Error.h"
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using namespace DFHack;
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#include <tinyxml.h>
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template<class _T1, class _T2, class _T3>
struct triple
{
typedef _T1 first_type;
typedef _T2 second_type;
typedef _T3 third_type;
_T1 first;
_T2 second;
_T3 third;
triple() : first(), second(), third() { }
triple(const _T1& __a, const _T2& __b, const _T3& __c) : first(__a), second(__b), third(__c) { }
template<class _U1, class _U2, class _U3>
triple(const triple<_U1, _U2, _U3>& __p) : first(__p.first), second(__p.second), third(__p.third) { }
};
template<class _T1, class _T2, class _T3>
inline bool operator==(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return __x.first == __y.first && __x.second == __y.second && __x.third == __y.third;
}
template<class _T1, class _T2, class _T3>
inline bool operator<(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return
__x.first < __y.first ||
(!(__y.first < __x.first) && __x.second < __y.second) ||
(!(__y.first < __x.first) && !(__x.second < __y.second) && (__x.third < __y.third));
}
template<class _T1, class _T2, class _T3>
inline bool operator!=(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return !(__x == __y);
}
template<class _T1, class _T2, class _T3>
inline bool operator>(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return __y < __x;
}
template<class _T1, class _T2, class _T3>
inline bool operator<=(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return !(__y < __x);
}
template<class _T1, class _T2, class _T3>
inline bool operator>=(const triple<_T1, _T2, _T3>& __x, const triple<_T1, _T2, _T3>& __y)
{
return !(__x < __y);
}
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VersionInfoFactory::VersionInfoFactory()
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{
error = false;
}
VersionInfoFactory::~VersionInfoFactory()
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{
clear();
}
void VersionInfoFactory::clear(void)
{
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// for each stored version, delete
for(size_t i = 0; i < versions.size();i++)
{
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delete versions[i];
}
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versions.clear();
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knownVersions.clear();
error = false;
}
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VersionInfo * VersionInfoFactory::getVersionInfoByMD5(string hash)
{
VersionInfo * vinfo;
for(size_t i = 0; i < versions.size();i++)
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{
vinfo = versions[i];
string test_hash;
if(vinfo->getMD5(test_hash) && hash == test_hash)
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{
return vinfo;
}
}
return 0;
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}
VersionInfo * VersionInfoFactory::getVersionInfoByPETimestamp(uint32_t timestamp)
{
VersionInfo * vinfo;
//cout << "lookup size:" << versions.size() << endl;
for(size_t i = 0; i < versions.size();i++)
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{
vinfo = versions[i];
uint32_t test_PE;
//cout << "Testing version: " << hex << vinfo <<" No:" << dec << i << endl;
//cout << vinfo->getName() << endl;
if(vinfo->getPE(test_PE) && test_PE == timestamp)
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{
return vinfo;
}
//cout << "LOOP ENDS" << endl;
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}
//cout << "NOTHING!" << endl;
return 0;
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}
void VersionInfoFactory::ParseVTable(TiXmlElement* vtable, VersionInfo* mem)
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{
TiXmlElement* pClassEntry;
TiXmlElement* pClassSubEntry;
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/*
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// check for rebase, do rebase if check positive
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const char * rebase = vtable->Attribute("rebase");
if(rebase)
{
int32_t rebase_offset = strtol(rebase, NULL, 16);
mem->RebaseVTable(rebase_offset);
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}
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*/
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// parse vtable entries
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pClassEntry = vtable->FirstChildElement();
for(;pClassEntry;pClassEntry=pClassEntry->NextSiblingElement())
{
string type = pClassEntry->Value();
const char *cstr_name = pClassEntry->Attribute("name");
const char *cstr_vtable = pClassEntry->Attribute("vtable");
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uint32_t vtable_num = 0;
if(cstr_vtable)
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vtable_num = strtol(cstr_vtable, NULL, 16);
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// it's a simple class
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if(type== "class")
{
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mem->setClass(cstr_name, vtable_num);
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}
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// it's a multi-type class
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else if (type == "multiclass")
{
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// get offset of the type variable
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const char *cstr_typeoffset = pClassEntry->Attribute("typeoffset");
uint32_t typeoffset = 0;
if(cstr_typeoffset)
typeoffset = strtol(cstr_typeoffset, NULL, 16);
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t_class * mclass = mem->setClass(cstr_name, vtable_num, typeoffset);
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// parse class sub-entries
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pClassSubEntry = pClassEntry->FirstChildElement();
for(;pClassSubEntry;pClassSubEntry=pClassSubEntry->NextSiblingElement())
{
type = pClassSubEntry->Value();
if(type== "class")
{
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// type is a value loaded from type offset
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cstr_name = pClassSubEntry->Attribute("name");
const char *cstr_value = pClassSubEntry->Attribute("type");
mem->setClassChild(mclass,cstr_name,cstr_value);
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}
}
}
}
}
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struct breadcrumb
{
TiXmlElement * first;
OffsetGroup * second;
};
void VersionInfoFactory::ParseOffsets(TiXmlElement * parent, VersionInfo* target, bool initial)
{
// we parse the groups iteratively instead of recursively
// breadcrubs acts like a makeshift stack
// first pair entry stores the current element of that level
// second pair entry the group object from OffsetGroup
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typedef triple< TiXmlElement *, OffsetGroup *, INVAL_TYPE> groupTriple;
vector< groupTriple > breadcrumbs;
{
TiXmlElement* pEntry;
// we get the <Offsets>, look at the children
pEntry = parent->FirstChildElement();
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const char *cstr_invalid = parent->Attribute("valid");
INVAL_TYPE parent_inval = NOT_SET;
if(cstr_invalid)
{
if(strcmp(cstr_invalid,"false") == 0)
parent_inval = IS_INVALID;
else if(strcmp(cstr_invalid,"true") == 0)
parent_inval = IS_VALID;
}
OffsetGroup * currentGroup = reinterpret_cast<OffsetGroup *> (target);
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currentGroup->setInvalid(parent_inval);
// we end here if there are no child tags.
if(!pEntry)
return;
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breadcrumbs.push_back(groupTriple(pEntry,currentGroup, parent_inval));
}
// work variables
OffsetGroup * currentGroup = 0;
TiXmlElement * currentElem = 0;
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INVAL_TYPE parent_inval = NOT_SET;
//cerr << "<Offsets>"<< endl;
while(1)
{
// get current work variables
currentElem = breadcrumbs.back().first;
currentGroup = breadcrumbs.back().second;
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parent_inval = breadcrumbs.back().third;
// we reached the end of the current group?
if(!currentElem)
{
// go one level up
breadcrumbs.pop_back();
// exit if no more work
if(breadcrumbs.empty())
{
break;
}
else
{
//cerr << "</group>" << endl;
continue;
}
}
if(!currentGroup)
{
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groupTriple & gp = breadcrumbs.back();
gp.first = gp.first->NextSiblingElement();
continue;
}
// skip non-elements
if (currentElem->Type() != TiXmlNode::ELEMENT)
{
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groupTriple & gp = breadcrumbs.back();
gp.first = gp.first->NextSiblingElement();
continue;
}
// we have a valid current element and current group
// get properties
string type = currentElem->Value();
std::transform(type.begin(), type.end(), type.begin(), ::tolower);
const char *cstr_name = currentElem->Attribute("name");
if(!cstr_name)
{
// ERROR, missing attribute
}
// evaluate elements
const char *cstr_value = currentElem->Attribute("value");
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const char *cstr_invalid = currentElem->Attribute("valid");
INVAL_TYPE child_inval = parent_inval;
if(cstr_invalid)
{
if(strcmp(cstr_invalid,"false") == 0)
child_inval = IS_INVALID;
else if(strcmp(cstr_invalid,"true") == 0)
child_inval = IS_VALID;
}
if(type == "group")
{
// create or get group
OffsetGroup * og;
if(initial)
og = currentGroup->createGroup(cstr_name);
else
og = currentGroup->getGroup(cstr_name);
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// advance this level to the next element
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groupTriple & gp = breadcrumbs.back();
gp.first = currentElem->NextSiblingElement();
if(!og)
{
string fullname = currentGroup->getFullName() + cstr_name;
throw Error::MissingMemoryDefinition("group", fullname);
}
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// add a new level that will be processed in the next step
breadcrumbs.push_back(groupTriple(currentElem->FirstChildElement(), og, child_inval));
og->setInvalid(child_inval);
continue;
}
else if(type == "address")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createAddress(cstr_name);
}
else if(cstr_value)
{
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currentGroup->setAddress(cstr_name, cstr_value, child_inval);
}
else
{
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currentGroup->setAddressValidity(cstr_name, child_inval);
}
}
else if(type == "offset")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createOffset(cstr_name);
}
else if(cstr_value)
{
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currentGroup->setOffset(cstr_name, cstr_value, child_inval);
}
else
{
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currentGroup->setOffsetValidity(cstr_name, child_inval);
}
}
else if(type == "string")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createString(cstr_name);
}
else if(cstr_value)
{
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currentGroup->setString(cstr_name, cstr_value, child_inval);
}
else
{
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currentGroup->setStringValidity(cstr_name, child_inval);
}
}
else if(type == "hexvalue")
{
if(child_inval == NOT_SET)
child_inval = IS_VALID;
if(initial)
{
currentGroup->createHexValue(cstr_name);
}
else if(cstr_value)
{
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currentGroup->setHexValue(cstr_name, cstr_value, child_inval);
}
else
{
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currentGroup->setHexValueValidity(cstr_name, child_inval);
}
}
// advance to next element
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groupTriple & gp = breadcrumbs.back();
gp.first = currentElem->NextSiblingElement();
continue;
}
//cerr << "</Offsets>"<< endl;
}
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void VersionInfoFactory::ParseBase (TiXmlElement* entry, VersionInfo* mem)
{
TiXmlElement* pElement;
TiXmlElement* pElement2nd;
const char *cstr_version = entry->Attribute("name");
if (!cstr_version)
throw Error::MemoryXmlBadAttribute("name");
mem->setVersion(cstr_version);
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mem->setOS(OS_BAD);
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// process additional entries
pElement = entry->FirstChildElement()->ToElement();
for(;pElement;pElement=pElement->NextSiblingElement())
{
// only elements get processed
const char *cstr_type = pElement->Value();
std::string type = cstr_type;
if(type == "VTable")
{
ParseVTable(pElement, mem);
continue;
}
else if(type == "Offsets")
{
// we don't care about the descriptions here, do nothing
ParseOffsets(pElement, mem, true);
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continue;
}
else if (type == "Professions")
{
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pElement2nd = pElement->FirstChildElement("Profession");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Profession"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
// FIXME: missing some attributes here
if(id && name)
{
mem->setProfession(id,name);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Jobs")
{
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pElement2nd = pElement->FirstChildElement("Job");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Job"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
if(id && name)
{
mem->setJob(id,name);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Skills")
{
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pElement2nd = pElement->FirstChildElement("Skill");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Skill"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
if(id && name)
{
mem->setSkill(id,name);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Traits")
{
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pElement2nd = pElement->FirstChildElement("Trait");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Trait"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
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const char * lvl0 = pElement2nd->Attribute("level_0");
const char * lvl1 = pElement2nd->Attribute("level_1");
const char * lvl2 = pElement2nd->Attribute("level_2");
const char * lvl3 = pElement2nd->Attribute("level_3");
const char * lvl4 = pElement2nd->Attribute("level_4");
const char * lvl5 = pElement2nd->Attribute("level_5");
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if(id && name && lvl0 && lvl1 && lvl2 && lvl3 && lvl4 && lvl5)
{
mem->setTrait(id, name, lvl0, lvl1, lvl2, lvl3, lvl4, lvl5);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Labors")
{
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pElement2nd = pElement->FirstChildElement("Labor");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Labor"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
if(id && name)
{
mem->setLabor(id,name);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Levels")
{
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pElement2nd = pElement->FirstChildElement("Level");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Level"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
const char * nextlvl = pElement2nd->Attribute("xpNxtLvl");
if(id && name && nextlvl)
{
mem->setLevel(id, name, nextlvl);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else if (type == "Moods")
{
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pElement2nd = pElement->FirstChildElement("Mood");
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for(;pElement2nd;pElement2nd=pElement2nd->NextSiblingElement("Mood"))
{
const char * id = pElement2nd->Attribute("id");
const char * name = pElement2nd->Attribute("name");
if(id && name)
{
mem->setMood(id, name);
}
else
{
// FIXME: this is crap, doesn't tell anything about the error
throw Error::MemoryXmlUnderspecifiedEntry(name);
}
}
}
else
{
//FIXME: only log, not hard error
//throw Error::MemoryXmlUnknownType(type.c_str());
}
} // for
} // method
void VersionInfoFactory::EvalVersion(string base, VersionInfo * mem)
{
if(knownVersions.find(base) != knownVersions.end())
{
v_descr & desc = knownVersions[base];
if (!desc.second)
{
VersionInfo * basemem = new VersionInfo();
ParseVersion(desc.first, basemem);
desc.second = basemem;
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}
mem->copy(desc.second);
}
}
void VersionInfoFactory::ParseVersion (TiXmlElement* entry, VersionInfo* mem)
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{
TiXmlElement* pMemEntry;
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const char *cstr_name = entry->Attribute("name");
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const char *cstr_os = entry->Attribute("os");
const char *cstr_base = entry->Attribute("base");
const char *cstr_rebase = entry->Attribute("rebase");
if(cstr_base)
{
string base = cstr_base;
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EvalVersion(base, mem);
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}
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if (!cstr_name)
throw Error::MemoryXmlBadAttribute("name");
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if (!cstr_os)
throw Error::MemoryXmlBadAttribute("os");
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string os = cstr_os;
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mem->setVersion(cstr_name);
mem->setOS(cstr_os);
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// offset inherited addresses by 'rebase'.
int32_t rebase = 0;
if(cstr_rebase)
{
rebase = mem->getBase() + strtol(cstr_rebase, NULL, 16);
mem->RebaseAddresses(rebase);
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}
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//set base to default, we're overwriting this because the previous rebase could cause havoc on Vista/7
if(os == "windows")
{
// set default image base. this is fixed for base relocation later
mem->setBase(0x400000);
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}
else if(os == "linux")
{
// this is wrong... I'm not going to do base image relocation on linux though.
// users are free to use a sane kernel that doesn't do this kind of **** by default
mem->setBase(0x0);
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}
else
{
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throw Error::MemoryXmlBadAttribute("os");
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}
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// process additional entries
//cout << "Entry " << cstr_version << " " << cstr_os << endl;
pMemEntry = entry->FirstChildElement()->ToElement();
for(;pMemEntry;pMemEntry=pMemEntry->NextSiblingElement())
{
string type, name, value;
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const char *cstr_type = pMemEntry->Value();
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type = cstr_type;
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// check for missing parts
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if(type == "VTable")
{
ParseVTable(pMemEntry, mem);
continue;
}
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else if(type == "Offsets")
{
ParseOffsets(pMemEntry, mem);
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continue;
}
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else if (type == "MD5")
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{
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const char *cstr_value = pMemEntry->Attribute("value");
if(!cstr_value)
throw Error::MemoryXmlUnderspecifiedEntry(cstr_name);
mem->setMD5(cstr_value);
}
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else if (type == "PETimeStamp")
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{
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const char *cstr_value = pMemEntry->Attribute("value");
if(!cstr_value)
throw Error::MemoryXmlUnderspecifiedEntry(cstr_name);
mem->setPE(strtol(cstr_value, 0, 16));
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}
} // for
} // method
// load the XML file with offsets
bool VersionInfoFactory::loadFile(string path_to_xml)
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{
TiXmlDocument doc( path_to_xml.c_str() );
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std::cerr << "Loading " << path_to_xml << " ... ";
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//bool loadOkay = doc.LoadFile();
if (!doc.LoadFile())
{
error = true;
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cerr << "failed!\n";
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throw Error::MemoryXmlParse(doc.ErrorDesc(), doc.ErrorId(), doc.ErrorRow(), doc.ErrorCol());
}
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else
{
cerr << "OK\n";
}
TiXmlHandle hDoc(&doc);
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TiXmlElement* pElem;
TiXmlHandle hRoot(0);
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VersionInfo *mem;
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// block: name
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{
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pElem=hDoc.FirstChildElement().Element();
// should always have a valid root but handle gracefully if it does
if (!pElem)
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{
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error = true;
throw Error::MemoryXmlNoRoot();
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}
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string m_name=pElem->Value();
if(m_name != "DFHack")
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{
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error = true;
throw Error::MemoryXmlNoRoot();
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}
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// save this for later
hRoot=TiXmlHandle(pElem);
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}
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// transform elements
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{
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// trash existing list
for(size_t i = 0; i < versions.size(); i++)
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{
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delete versions[i];
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}
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versions.clear();
// For each base version
TiXmlElement* pMemInfo=hRoot.FirstChild( "Base" ).Element();
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map <string ,TiXmlElement *> map_pNamedEntries;
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vector <string> v_sEntries;
for( ; pMemInfo; pMemInfo=pMemInfo->NextSiblingElement("Base"))
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{
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const char *name = pMemInfo->Attribute("name");
if(name)
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{
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string str_name = name;
mem = new VersionInfo();
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ParseBase( pMemInfo , mem );
knownVersions[str_name] = v_descr (pMemInfo, mem);
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}
}
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// For each derivative version
pMemInfo=hRoot.FirstChild( "Version" ).Element();
for( ; pMemInfo; pMemInfo=pMemInfo->NextSiblingElement("Version"))
{
const char *name = pMemInfo->Attribute("name");
if(name)
{
string str_name = name;
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knownVersions[str_name] = v_descr (pMemInfo, (VersionInfo *) NULL);
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v_sEntries.push_back(str_name);
}
}
// Parse the versions
for(size_t i = 0; i< v_sEntries.size();i++)
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{
//FIXME: add a set of entries processed in a step of this cycle, use it to check for infinite loops
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string & name = v_sEntries[i];
v_descr & desc = knownVersions[name];
if(!desc.second)
{
VersionInfo *version = new VersionInfo();
ParseVersion( desc.first , version );
versions.push_back(version);
}
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}
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}
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error = false;
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std::cerr << "Loaded " << versions.size() << " DF versions." << std::endl;
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return true;
}