Add unfinished check-for-updates. Bump ffmpeg to get windows build fix.

3 files changed, 128 insertions, 0 deletions

diff --git a/src/lib/update.cc b/src/lib/update.cc
new file mode 100644
index 000000000..6e9d1169a
--- /dev/null
+++ b/src/lib/update.cc
@@ -0,0 +1,88 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    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
+    (at your option) 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include <string>
+#include <sstream>
+#include <curl/curl.h>
+#include <libcxml/cxml.h>
+#include "update.h"
+#include "version.h"
+
+#define BUFFER_SIZE 1024
+
+using std::cout;
+using std::min;
+using std::string;
+using std::stringstream;
+
+UpdateChecker::UpdateChecker ()
+	: _buffer (new char[BUFFER_SIZE])
+	, _offset (0)
+{
+	
+}
+
+UpdateChecker::~UpdateChecker ()
+{
+	delete[] _buffer;
+}
+
+static size_t
+write_callback_wrapper (void* data, size_t size, size_t nmemb, void* user)
+{
+	return reinterpret_cast<UpdateChecker*>(user)->write_callback (data, size, nmemb);
+}
+
+UpdateChecker::Result
+UpdateChecker::run ()
+{
+	curl_global_init (CURL_GLOBAL_ALL);
+	CURL* curl = curl_easy_init ();
+	if (!curl) {
+		return MAYBE;
+	}
+
+	curl_easy_setopt (curl, CURLOPT_URL, "http://dcpomatic.com/update.php");
+	curl_easy_setopt (curl, CURLOPT_WRITEFUNCTION, write_callback_wrapper);
+	curl_easy_setopt (curl, CURLOPT_WRITEDATA, this);
+	string const agent = "dcpomatic/" + string (dcpomatic_version);
+	curl_easy_setopt (curl, CURLOPT_USERAGENT, agent.c_str ());
+	int r = curl_easy_perform (curl);
+	if (r != CURLE_OK) {
+		return MAYBE;
+	}
+
+	_buffer[BUFFER_SIZE-1] = '\0';
+	stringstream s;
+	s << _buffer;
+	cxml::Document doc ("Update");
+	doc.read_stream (s);
+
+	cout << doc.string_child ("Stable") << "\n";
+	return YES;
+}
+
+size_t
+UpdateChecker::write_callback (void* data, size_t size, size_t nmemb)
+{
+	size_t const t = min (size * nmemb, size_t (BUFFER_SIZE - _offset));
+	memcpy (_buffer + _offset, data, t);
+	_offset += t;
+	return t;
+}
diff --git a/src/lib/update.h b/src/lib/update.h
new file mode 100644
index 000000000..2063dd484
--- /dev/null
+++ b/src/lib/update.h
@@ -0,0 +1,39 @@
+/*
+    Copyright (C) 2014 Carl Hetherington <cth@carlh.net>
+
+    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
+    (at your option) 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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+class UpdateChecker
+{
+public:
+	UpdateChecker ();
+	~UpdateChecker ();
+
+	enum Result {
+		YES,
+		MAYBE,
+		NO
+	};
+
+	Result run ();
+
+	size_t write_callback (void *, size_t, size_t);
+
+private:	
+	char* _buffer;
+	int _offset;
+};
diff --git a/src/lib/wscript b/src/lib/wscript
index 25186a3d3..81a55a160 100644
--- a/src/lib/wscript
+++ b/src/lib/wscript
@@ -57,6 +57,7 @@ sources = """
           transcoder.cc
           types.cc
           ui_signaller.cc
+          update.cc
           util.cc
           video_content.cc
           video_decoder.cc