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-rw-r--r--src/utils/xml/libxml.cpp315
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diff --git a/src/utils/xml/libxml.cpp b/src/utils/xml/libxml.cpp
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+++ b/src/utils/xml/libxml.cpp
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+/*
+ * The ManaPlus Client
+ * Copyright (C) 2004-2009 The Mana World Development Team
+ * Copyright (C) 2009-2010 The Mana Developers
+ * Copyright (C) 2011-2016 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef ENABLE_LIBXML
+
+#include "utils/xml/libxml.h"
+
+#include "logger.h"
+
+#include "utils/fuzzer.h"
+#include "utils/physfstools.h"
+#include "utils/stringutils.h"
+
+#include "utils/translation/podict.h"
+
+#include "debug.h"
+
+namespace
+{
+ bool valid = false;
+} // namespace
+
+static void xmlErrorLogger(void *ctx A_UNUSED, const char *msg A_UNUSED, ...)
+#ifdef __GNUC__
+#ifdef __OpenBSD__
+ __attribute__((__format__(printf, 2, 3)))
+#else
+ __attribute__((__format__(gnu_printf, 2, 3)))
+#endif
+#endif
+;
+
+static void xmlErrorLogger(void *ctx A_UNUSED, const char *msg, ...)
+{
+ if (!msg)
+ return;
+
+ size_t size = 1024;
+ const size_t msgSize = strlen(msg);
+ if (msgSize * 3 > size)
+ size = msgSize * 3;
+
+ char* buf = new char[size + 1];
+ va_list ap;
+
+ // Use a temporary buffer to fill in the variables
+ va_start(ap, msg);
+ vsnprintf(buf, size, msg, ap);
+ buf[size] = 0;
+ va_end(ap);
+
+ if (logger)
+ logger->log_r("%s", buf);
+ else
+ puts(buf);
+
+ // Delete temporary buffer
+ delete [] buf;
+ valid = false;
+}
+
+namespace XML
+{
+ Document::Document(const std::string &filename,
+ const UseResman useResman,
+ const SkipError skipError) :
+ mDoc(nullptr),
+ mIsValid(false)
+ {
+#ifdef USE_FUZZER
+ if (Fuzzer::conditionTerminate(filename.c_str()))
+ return;
+#endif
+ BLOCK_START("XML::Document::Document")
+ int size = 0;
+ char *data = nullptr;
+ valid = true;
+ if (useResman == UseResman_true)
+ {
+ data = static_cast<char*>(PhysFs::loadFile(
+ filename.c_str(), size));
+ }
+ else
+ {
+ std::ifstream file;
+ file.open(filename.c_str(), std::ios::in);
+
+ if (file.is_open())
+ {
+ // Get length of file
+ file.seekg(0, std::ios::end);
+ size = static_cast<int>(file.tellg());
+ if (size < 0)
+ {
+ logger->log("Error loading XML file %s", filename.c_str());
+ }
+ else
+ {
+ file.seekg(0, std::ios::beg);
+ data = static_cast<char*>(malloc(size));
+ file.read(data, size);
+ }
+ file.close();
+ }
+ else
+ {
+ logger->log("Error loading XML file %s", filename.c_str());
+ }
+ }
+
+ if (data)
+ {
+ mDoc = xmlParseMemory(data, size);
+ free(data);
+
+ if (!mDoc)
+ logger->log("Error parsing XML file %s", filename.c_str());
+ }
+ else if (skipError == SkipError_false)
+ {
+ logger->log("Error loading %s", filename.c_str());
+ }
+ mIsValid = valid;
+ BLOCK_END("XML::Document::Document")
+ }
+
+ Document::Document(const char *const data, const int size) :
+ mDoc(data ? xmlParseMemory(data, size) : nullptr),
+ mIsValid(true)
+ {
+ }
+
+ Document::~Document()
+ {
+ if (mDoc)
+ xmlFreeDoc(mDoc);
+ }
+
+ XmlNodePtr Document::rootNode()
+ {
+ return mDoc ? xmlDocGetRootElement(mDoc) : nullptr;
+ }
+
+ int getProperty(const XmlNodePtr node,
+ const char *const name,
+ int def)
+ {
+ int &ret = def;
+
+ xmlChar *const prop = XmlGetProp(node, name);
+ if (prop)
+ {
+ ret = atoi(reinterpret_cast<const char*>(prop));
+ xmlFree(prop);
+ }
+
+ return ret;
+ }
+
+ int getIntProperty(const XmlNodePtr node,
+ const char *const name,
+ int def,
+ const int min,
+ const int max)
+ {
+ int &ret = def;
+
+ xmlChar *const prop = XmlGetProp(node, name);
+ if (prop)
+ {
+ ret = atoi(reinterpret_cast<char*>(prop));
+ xmlFree(prop);
+ }
+ if (ret < min)
+ ret = min;
+ else if (ret > max)
+ ret = max;
+ return ret;
+ }
+
+ double getFloatProperty(const XmlNodePtr node,
+ const char *const name,
+ double def)
+ {
+ double &ret = def;
+
+ xmlChar *const prop = XmlGetProp(node, name);
+ if (prop)
+ {
+ ret = atof(reinterpret_cast<char*>(prop));
+ xmlFree(prop);
+ }
+
+ return ret;
+ }
+
+ std::string getProperty(const XmlNodePtr node,
+ const char *const name,
+ const std::string &def)
+ {
+ xmlChar *const prop = XmlGetProp(node, name);
+ if (prop)
+ {
+ std::string val = reinterpret_cast<char*>(prop);
+ xmlFree(prop);
+ return val;
+ }
+
+ return def;
+ }
+
+ std::string langProperty(const XmlNodePtr node,
+ const char *const name,
+ const std::string &def)
+ {
+ std::string str = getProperty(node, name, def);
+ if (!translator)
+ return str;
+
+ return translator->getStr(str);
+ }
+
+ bool getBoolProperty(const XmlNodePtr node,
+ const char *const name,
+ const bool def)
+ {
+ xmlChar *const prop = XmlGetProp(node, name);
+
+ if (XmlStrEqual(prop, "true"))
+ return true;
+ if (XmlStrEqual(prop, "false"))
+ return false;
+ return def;
+ }
+
+ XmlNodePtr findFirstChildByName(const XmlNodePtrConst parent,
+ const char *const name)
+ {
+ if (!parent)
+ return nullptr;
+ for_each_xml_child_node(child, parent)
+ {
+ if (xmlNameEqual(child, name))
+ return child;
+ }
+
+ return nullptr;
+ }
+
+ // Initialize libxml2 and check for potential ABI mismatches between
+ // compiled version and the shared library actually used.
+ void initXML()
+ {
+ xmlInitParser();
+ LIBXML_TEST_VERSION;
+
+ // Suppress libxml2 error messages
+ xmlSetGenericErrorFunc(nullptr, &xmlErrorLogger);
+ }
+
+ // Shutdown libxml
+ void cleanupXML()
+ {
+ xmlCleanupParser();
+ }
+
+ bool Document::validateXml(const std::string &fileName)
+ {
+ const xmlDocPtr doc = xmlReadFile(fileName.c_str(),
+ nullptr, XML_PARSE_PEDANTIC);
+ const bool valid1(doc);
+ xmlFreeDoc(doc);
+ if (!valid1)
+ return false;
+
+ std::ifstream file;
+ file.open(fileName.c_str(), std::ios::in);
+ if (!file.is_open())
+ {
+ file.close();
+ return false;
+ }
+ char line[101];
+ if (!file.getline(line, 100))
+ return false;
+ file.close();
+
+ const std::string str = line;
+ if (!strStartWith(str, "<?xml "))
+ return false;
+
+ return true;
+ }
+} // namespace XML
+
+#endif // ENABLE_LIBXML