dl-fldigi/src/dl_fldigi/update.cxx

167 wiersze
3.1 KiB
C++

/*
* Copyright (C) 2012 Daniel Richman
* License: GNU GPL 3
*
* update.cxx: Automatically check for updates
*/
#include "dl_fldigi/update.h"
#include <stdexcept>
#include <map>
#include <string>
#include <FL/Fl.H>
#include <FL/fl_ask.H>
#include "config.h"
#include "debug.h"
#include "fl_digi.h"
#include "icons.h"
#include "jsoncpp.h"
#include "dl_fldigi/dl_fldigi.h"
#include "dl_fldigi/version.h"
#include "habitat/EZ.h"
using namespace std;
namespace dl_fldigi {
namespace update {
static UpdateThread *thr;
static bool update_new;
static string update_text, update_url;
static void update_check();
static void update_thread_done(void *what);
static void show_update();
/* check, cleanup are called by main thread only, while holding Fl lock */
void check()
{
if (thr)
return;
LOG_INFO("checking for dl-fldigi updates");
thr = new UpdateThread();
thr->start();
}
void cleanup()
{
while (thr)
Fl::wait();
}
void *UpdateThread::run()
{
update_check();
Fl::awake(update_thread_done, this);
return NULL;
}
/* invoked via Fl::awake; so we have the main Fl lock */
static void update_thread_done(void *what)
{
if (what != thr)
{
LOG_ERROR("unknown thread");
return;
}
if (update_new)
{
show_update();
update_new = false;
}
LOG_INFO("cleaning up");
thr->join();
delete thr;
thr = 0;
}
#ifdef __MINGW32__
#define PLATFORM "mingw32"
#endif
#ifdef __APPLE__
#define PLATFORM "macosx"
#endif
#ifdef __linux__
#define PLATFORM "linux"
#endif
#ifndef PLATFORM
#error "Couldn't work out what the platform should be for update checking :-("
#endif
static void update_check()
{
map<string,string> args;
args["platform"] = PLATFORM;
args["commit"] = dl_fldigi::git_commit;
string url = "http://habhub.org/dl-fldigi-check";
url.append(EZ::cURL::query_string(args, true));
EZ::cURL curl;
string response;
try
{
response = curl.get(url);
}
catch (runtime_error &e)
{
Fl_AutoLock lock;
LOG_WARN("Error in update check: %s", e.what());
return;
}
/* blocking download done, now get the lock: */
Fl_AutoLock lock;
if (response == "")
{
LOG_INFO("dl-fldigi is up to date");
return;
}
Json::Reader reader;
Json::Value val;
if (!reader.parse(response, val, false) ||
!val.isObject() || !val.size() ||
!val["text"].isString() || !val["url"].isString())
{
LOG_WARN("Error in update check: Bad JSON");
return;
}
update_text = val["text"].asString();
update_url = val["url"].asString();
// Strange bug causing empty dialog boxes and unresponse process
// requires running got_update in the main thread, but whatever.
update_new = true;
}
static void show_update()
{
int c = fl_choice2("%s", "Close", "Open in browser", NULL,
update_text.c_str());
if (c)
{
LOG_INFO("Opening %s in browser", update_url.c_str());
// from fl_digi.h
cb_mnuVisitURL(0, (void *) update_url.c_str());
}
}
} /* namespace update */
} /* namespace dl_fldigi */