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-rw-r--r--src/xmpp/xmpp_stanza.cpp229
1 files changed, 229 insertions, 0 deletions
diff --git a/src/xmpp/xmpp_stanza.cpp b/src/xmpp/xmpp_stanza.cpp
new file mode 100644
index 0000000..435f333
--- /dev/null
+++ b/src/xmpp/xmpp_stanza.cpp
@@ -0,0 +1,229 @@
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <utils/encoding.hpp>
+#include <utils/split.hpp>
+
+#include <stdexcept>
+#include <iostream>
+#include <sstream>
+
+#include <cstring>
+
+std::string xml_escape(const std::string& data)
+{
+ std::string res;
+ res.reserve(data.size());
+ for (size_t pos = 0; pos != data.size(); ++pos)
+ {
+ switch(data[pos])
+ {
+ case '&':
+ res += "&amp;";
+ break;
+ case '<':
+ res += "&lt;";
+ break;
+ case '>':
+ res += "&gt;";
+ break;
+ case '\"':
+ res += "&quot;";
+ break;
+ case '\'':
+ res += "&apos;";
+ break;
+ default:
+ res += data[pos];
+ break;
+ }
+ }
+ return res;
+}
+
+std::string sanitize(const std::string& data, const std::string& encoding)
+{
+ if (utils::is_valid_utf8(data.data()))
+ return xml_escape(utils::remove_invalid_xml_chars(data));
+ else
+ return xml_escape(utils::remove_invalid_xml_chars(utils::convert_to_utf8(data, encoding.data())));
+}
+
+XmlNode::XmlNode(const std::string& name, XmlNode* parent):
+ parent(parent)
+{
+ // split the namespace and the name
+ auto n = name.rfind(':');
+ if (n == std::string::npos)
+ this->name = name;
+ else
+ {
+ this->name = name.substr(n+1);
+ this->attributes["xmlns"] = name.substr(0, n);
+ }
+}
+
+XmlNode::XmlNode(const std::string& name):
+ XmlNode(name, nullptr)
+{
+}
+
+void XmlNode::delete_all_children()
+{
+ this->children.clear();
+}
+
+void XmlNode::set_attribute(const std::string& name, const std::string& value)
+{
+ this->attributes[name] = value;
+}
+
+void XmlNode::set_tail(const std::string& data)
+{
+ this->tail = data;
+}
+
+void XmlNode::add_to_tail(const std::string& data)
+{
+ this->tail += data;
+}
+
+void XmlNode::set_inner(const std::string& data)
+{
+ this->inner = data;
+}
+
+void XmlNode::add_to_inner(const std::string& data)
+{
+ this->inner += data;
+}
+
+std::string XmlNode::get_inner() const
+{
+ return this->inner;
+}
+
+std::string XmlNode::get_tail() const
+{
+ return this->tail;
+}
+
+const XmlNode* XmlNode::get_child(const std::string& name, const std::string& xmlns) const
+{
+ for (const auto& child: this->children)
+ {
+ if (child->name == name && child->get_tag("xmlns") == xmlns)
+ return child.get();
+ }
+ return nullptr;
+}
+
+std::vector<const XmlNode*> XmlNode::get_children(const std::string& name, const std::string& xmlns) const
+{
+ std::vector<const XmlNode*> res;
+ for (const auto& child: this->children)
+ {
+ if (child->name == name && child->get_tag("xmlns") == xmlns)
+ res.push_back(child.get());
+ }
+ return res;
+}
+
+XmlNode* XmlNode::add_child(std::unique_ptr<XmlNode> child)
+{
+ child->parent = this;
+ auto ret = child.get();
+ this->children.push_back(std::move(child));
+ return ret;
+}
+
+XmlNode* XmlNode::add_child(XmlNode&& child)
+{
+ auto new_node = std::make_unique<XmlNode>(std::move(child));
+ return this->add_child(std::move(new_node));
+}
+
+XmlNode* XmlNode::add_child(const XmlNode& child)
+{
+ auto new_node = std::make_unique<XmlNode>(child);
+ return this->add_child(std::move(new_node));
+}
+
+XmlNode* XmlNode::get_last_child() const
+{
+ return this->children.back().get();
+}
+
+XmlNode* XmlNode::get_parent() const
+{
+ return this->parent;
+}
+
+void XmlNode::set_name(const std::string& name)
+{
+ this->name = name;
+}
+
+void XmlNode::set_name(std::string&& name)
+{
+ this->name = std::move(name);
+}
+
+const std::string XmlNode::get_name() const
+{
+ return this->name;
+}
+
+std::string XmlNode::to_string() const
+{
+ std::ostringstream res;
+ res << "<" << this->name;
+ for (const auto& it: this->attributes)
+ res << " " << it.first << "='" << sanitize(it.second) + "'";
+ if (!this->has_children() && this->inner.empty())
+ res << "/>";
+ else
+ {
+ res << ">" + sanitize(this->inner);
+ for (const auto& child: this->children)
+ res << child->to_string();
+ res << "</" << this->get_name() << ">";
+ }
+ res << sanitize(this->tail);
+ return res.str();
+}
+
+bool XmlNode::has_children() const
+{
+ return !this->children.empty();
+}
+
+const std::string& XmlNode::get_tag(const std::string& name) const
+{
+ try
+ {
+ const auto& value = this->attributes.at(name);
+ return value;
+ }
+ catch (const std::out_of_range& e)
+ {
+ static const std::string def{};
+ return def;
+ }
+}
+
+bool XmlNode::del_tag(const std::string& name)
+{
+ if (this->attributes.erase(name) != 0)
+ return true;
+ return false;
+}
+
+std::string& XmlNode::operator[](const std::string& name)
+{
+ return this->attributes[name];
+}
+
+std::ostream& operator<<(std::ostream& os, const XmlNode& node)
+{
+ return os << node.to_string();
+}