2 files changed, 105 insertions, 0 deletions
diff --git a/src/xmpp/adhoc_session.cpp b/src/xmpp/adhoc_session.cpp
new file mode 100644
index 0000000..fc60bb7
--- /dev/null
+++ b/src/xmpp/adhoc_session.cpp
@@ -0,0 +1,37 @@
+#include <xmpp/adhoc_session.hpp>
+#include <xmpp/adhoc_command.hpp>
+
+#include <assert.h>
+
+AdhocSession::AdhocSession(const AdhocCommand& command, const std::string& jid):
+  command(command),
+  owner_jid(jid),
+  current_step(0),
+  terminated(false)
+{
+}
+
+AdhocSession::~AdhocSession()
+{
+}
+
+const AdhocStep& AdhocSession::get_next_step()
+{
+  assert(this->current_step < this->command.callbacks.size());
+  return this->command.callbacks[this->current_step++];
+}
+
+size_t AdhocSession::remaining_steps() const
+{
+  return this->command.callbacks.size() - this->current_step;
+}
+
+bool AdhocSession::is_terminated() const
+{
+  return this->terminated;
+}
+
+void AdhocSession::terminate()
+{
+  this->terminated = true;
+}
diff --git a/src/xmpp/adhoc_session.hpp b/src/xmpp/adhoc_session.hpp
new file mode 100644
index 0000000..111b43b
--- /dev/null
+++ b/src/xmpp/adhoc_session.hpp
@@ -0,0 +1,68 @@
+#ifndef ADHOC_SESSION_HPP
+# define ADHOC_SESSION_HPP
+
+#include <xmpp/xmpp_stanza.hpp>
+
+#include <functional>
+#include <string>
+
+class AdhocCommand;
+class AdhocSession;
+
+/**
+ * A function executed as an ad-hoc command step. It takes a <command/>
+ * XmlNode and modifies it accordingly (inserting for example an <error/>
+ * node, or a data form…).
+ * TODO fix this:
+ * It also must call one of step_passed(), cancel() etc on the AdhocSession object.
+ */
+typedef std::function<void(AdhocSession&, XmlNode&)> AdhocStep;
+
+class AdhocSession
+{
+public:
+  explicit AdhocSession(const AdhocCommand& command, const std::string& jid);
+  ~AdhocSession();
+  /**
+   * Return the function to be executed, found in our AdhocCommand, for the
+   * current_step. And increment the current_step.
+   */
+  const AdhocStep& get_next_step();
+  /**
+   * Return the number of remaining steps.
+   */
+  size_t remaining_steps() const;
+  /**
+   * This may be modified by an AdhocStep, to indicate that this session
+   * should no longer exist, because we encountered an error, and we can't
+   * execute any more step of it.
+   */
+  void terminate();
+  bool is_terminated() const;
+
+private:
+  /**
+   * A reference of the command concerned by this session. Used for example
+   * to get the next step of that command, things like that.
+   */
+  const AdhocCommand& command;
+  /**
+   * The full JID of the XMPP user that created this session by executing
+   * the first step of a command. Only that JID must be allowed to access
+   * this session.
+   */
+  const std::string& owner_jid;
+  /**
+   * The current step we are at. It starts at zero. It is used to index the
+   * associated AdhocCommand::callbacks vector.
+   */
+  size_t current_step;
+  bool terminated;
+
+  AdhocSession(const AdhocSession&) = delete;
+  AdhocSession(AdhocSession&&) = delete;
+  AdhocSession& operator=(const AdhocSession&) = delete;
+  AdhocSession& operator=(AdhocSession&&) = delete;
+};
+
+#endif // ADHOC_SESSION_HPP