add bsod

3 files changed, 177 insertions, 1 deletions

diff --git a/main/Makefile.am b/main/Makefile.am
index 33f54aee..636c6ffa 100644
--- a/main/Makefile.am
+++ b/main/Makefile.am
@@ -4,7 +4,7 @@ INCLUDES = \
 bin_PROGRAMS = enigma2
 
 enigma2_SOURCES = \
-	enigma.cpp 
+	enigma.cpp bsod.cpp
 
 enigma2_LDADD_WHOLE = \
 	$(top_builddir)/lib/actions/libenigma_actions.a \
diff --git a/main/bsod.cpp b/main/bsod.cpp
new file mode 100644
index 00000000..dd274eca
--- /dev/null
+++ b/main/bsod.cpp
@@ -0,0 +1,168 @@
+#include <string.h>
+#include <signal.h>
+#include <asm/ptrace.h>
+
+#include <lib/base/eerror.h>
+#include <lib/base/smartptr.h>
+#include <lib/gdi/grc.h>
+#include <lib/gdi/gfbdc.h>
+
+/************************************************/
+
+#define CRASH_EMAILADDR "crashlog@dream-multimedia-tv.de"
+
+#define RINGBUFFER_SIZE 16384
+static char ringbuffer[RINGBUFFER_SIZE];
+static int ringbuffer_head;
+
+static void addToLogbuffer(const char *data, int len)
+{
+	while (len)
+	{
+		int remaining = RINGBUFFER_SIZE - ringbuffer_head;
+	
+		if (remaining > len)
+			remaining = len;
+	
+		memcpy(ringbuffer + ringbuffer_head, data, remaining);
+		len -= remaining;
+		data += remaining;
+		ringbuffer_head += remaining;
+		if (ringbuffer_head >= RINGBUFFER_SIZE)
+			ringbuffer_head = 0;
+	}
+}
+
+static std::string getLogBuffer()
+{
+	int begin = ringbuffer_head;
+	while (ringbuffer[begin] == 0)
+	{
+		++begin;
+		if (begin == RINGBUFFER_SIZE)
+			begin = 0;
+		if (begin == ringbuffer_head)
+			return "";
+	}
+	if (begin < ringbuffer_head)
+		return std::string(ringbuffer + begin, ringbuffer_head - begin);
+	else
+	{
+		return std::string(ringbuffer + begin, RINGBUFFER_SIZE - begin) + std::string(ringbuffer, ringbuffer_head);
+	}
+}
+
+static void addToLogbuffer(int level, const std::string &log)
+{
+	addToLogbuffer(log.c_str(), log.size());
+}
+
+
+extern std::string getLogBuffer();
+
+void bsodFatal()
+{
+	char logfile[128];
+	sprintf(logfile, "/media/hdd/enigma2_crash_%u.log", (unsigned int)time(0));
+	FILE *f = fopen(logfile, "wb");
+	
+	std::string lines = getLogBuffer();
+
+	if (f)
+	{
+		time_t t = time(0);
+		fprintf(f, "enigma2 crashed on %s", ctime(&t));
+		fprintf(f, "please email this file to " CRASH_EMAILADDR "\n");
+		std::string buffer = getLogBuffer();
+		fwrite(buffer.c_str(), buffer.size(), 1, f);
+		fclose(f);
+	}
+	
+	ePtr<gFBDC> my_dc;
+	gFBDC::getInstance(my_dc);
+	
+	{
+		gPainter p(my_dc);
+		p.resetClip(eRect(ePoint(0, 0), my_dc->size()));
+		p.setBackgroundColor(gRGB(0x0000C0));
+		p.setForegroundColor(gRGB(0xFFFFFF));
+	
+		ePtr<gFont> font = new gFont("Regular", 20);
+		p.setFont(font);
+		p.clear();
+	
+		eRect usable_area = eRect(100, 70, my_dc->size().width() - 200, 100);
+	
+		p.renderText(usable_area, 
+			"We are really sorry. Something happened "
+			"which should not have happened, and "
+			"resulted in a crash. If you want to help "
+			"us in improving this situation, please send "
+			"the logfile created in /hdd/ to " CRASH_EMAILADDR ".", gPainter::RT_WRAP|gPainter::RT_HALIGN_LEFT);
+	
+		usable_area = eRect(100, 170, my_dc->size().width() - 200, my_dc->size().height() - 20);
+	
+		int i;
+	
+		size_t start = std::string::npos + 1;
+		for (i=0; i<20; ++i)
+		{
+			start = lines.rfind('\n', start - 1);
+			if (start == std::string::npos)
+			{
+				start = 0;
+				break;
+			}
+		}
+	
+		font = new gFont("Regular", 14);
+		p.setFont(font);
+	
+		p.renderText(usable_area, 
+			lines.substr(start), gPainter::RT_HALIGN_LEFT);
+	}
+
+	raise(SIGKILL);
+}
+
+#if defined(__MIPSEL__)
+void oops(const mcontext_t &context, int dumpcode)
+{
+	eDebug("PC: %08lx, vaddr: %08lx", (unsigned long)context.pc, (unsigned long)context.badvaddr);
+}
+#else
+#warning "no oops support!"
+#error bla
+#define NO_OOPS_SUPPORT
+#endif
+
+void handleFatalSignal(int signum, siginfo_t *si, void *ctx)
+{
+	ucontext_t *uc = (ucontext_t*)ctx;
+	eDebug("KILLED BY signal %d", signum);
+#ifndef NO_OOPS_SUPPORT
+	oops(uc->uc_mcontext, signum == SIGSEGV);
+#endif
+	eDebug("-------");
+	bsodFatal();
+}
+
+void bsodCatchSignals()
+{
+	struct sigaction act;
+	act.sa_handler = SIG_DFL;
+	act.sa_sigaction = handleFatalSignal;
+	act.sa_flags = 0;
+	if (sigemptyset(&act.sa_mask) == -1)
+		perror("sigemptyset");
+	
+		/* start handling segfaults etc. */
+	sigaction(SIGSEGV, &act, 0);
+	sigaction(SIGILL, &act, 0);
+	sigaction(SIGBUS, &act, 0);
+}
+
+void bsodLogInit()
+{
+	logOutput.connect(addToLogbuffer);
+}
diff --git a/main/bsod.h b/main/bsod.h
new file mode 100644
index 00000000..aa8cfb74
--- /dev/null
+++ b/main/bsod.h
@@ -0,0 +1,8 @@
+#ifndef __main_bsod_h
+#define __main_bsod_h
+
+void bsodLogInit();
+void bsodCatchSignals();
+void bsodFatal();
+
+#endif