main/bsod.cpp

   1 #include <string.h>
   2 #include <signal.h>
   3 #include <asm/ptrace.h>
   4
   5 #include <lib/base/eerror.h>
   6 #include <lib/base/smartptr.h>
   7 #include <lib/gdi/grc.h>
   8 #include <lib/gdi/gfbdc.h>
   9 #ifdef WITH_SDL
  10 #include <lib/gdi/sdl.h>
  11 #endif
  12
  13 #include "version.h"
  14
  15 /************************************************/
  16
  17 #define CRASH_EMAILADDR "crashlog@dream-multimedia-tv.de"
  18
  19 #define RINGBUFFER_SIZE 16384
  20 static char ringbuffer[RINGBUFFER_SIZE];
  21 static int ringbuffer_head;
  22
  23 static void addToLogbuffer(const char *data, int len)
  24 {
  25         while (len)
  26         {
  27                 int remaining = RINGBUFFER_SIZE - ringbuffer_head;
  28
  29                 if (remaining > len)
  30                         remaining = len;
  31
  32                 memcpy(ringbuffer + ringbuffer_head, data, remaining);
  33                 len -= remaining;
  34                 data += remaining;
  35                 ringbuffer_head += remaining;
  36                 if (ringbuffer_head >= RINGBUFFER_SIZE)
  37                         ringbuffer_head = 0;
  38         }
  39 }
  40
  41 static std::string getLogBuffer()
  42 {
  43         int begin = ringbuffer_head;
  44         while (ringbuffer[begin] == 0)
  45         {
  46                 ++begin;
  47                 if (begin == RINGBUFFER_SIZE)
  48                         begin = 0;
  49                 if (begin == ringbuffer_head)
  50                         return "";
  51         }
  52         if (begin < ringbuffer_head)
  53                 return std::string(ringbuffer + begin, ringbuffer_head - begin);
  54         else
  55         {
  56                 return std::string(ringbuffer + begin, RINGBUFFER_SIZE - begin) + std::string(ringbuffer, ringbuffer_head);
  57         }
  58 }
  59
  60 static void addToLogbuffer(int level, const std::string &log)
  61 {
  62         addToLogbuffer(log.c_str(), log.size());
  63 }
  64
  65
  66 extern std::string getLogBuffer();
  67
  68 #define INFOFILE "/maintainer.info"
  69
  70 void bsodFatal()
  71 {
  72         char logfile[128];
  73         sprintf(logfile, "/media/hdd/enigma2_crash_%u.log", (unsigned int)time(0));
  74         FILE *f = fopen(logfile, "wb");
  75
  76         std::string lines = getLogBuffer();
  77
  78                 /* find python-tracebacks, and extract "  File "-strings */
  79         size_t start = 0;
  80
  81         char crash_emailaddr[256] = CRASH_EMAILADDR;
  82         char crash_component[256] = "enigma2";
  83
  84         while ((start = lines.find("\n  File \"", start)) != std::string::npos)
  85         {
  86                 start += 9;
  87                 size_t end = lines.find("\"", start);
  88                 if (end == std::string::npos)
  89                         break;
  90                 end = lines.rfind("/", end);
  91                 if (end == std::string::npos)
  92                         break;
  93                 if (end - start >= (256 - strlen(INFOFILE)))
  94                         continue;
  95                 char filename[256];
  96                 snprintf(filename, 256, "%s%s", lines.substr(start, end - start).c_str(), INFOFILE);
  97                 FILE *cf = fopen(filename, "r");
  98                 if (cf)
  99                 {
 100                         fgets(crash_emailaddr, sizeof crash_emailaddr, cf);
 101                         if (*crash_emailaddr && crash_emailaddr[strlen(crash_emailaddr)-1] == '\n')
 102                                 crash_emailaddr[strlen(crash_emailaddr)-1] = 0;
 103
 104                         fgets(crash_component, sizeof crash_component, cf);
 105                         if (*crash_component && crash_component[strlen(crash_component)-1] == '\n')
 106                                 crash_component[strlen(crash_component)-1] = 0;
 107                         fclose(cf);
 108                 }
 109         }
 110
 111         if (f)
 112         {
 113                 time_t t = time(0);
 114                 fprintf(f, "enigma2 crashed on %s", ctime(&t));
 115 #ifdef ENIGMA2_CHECKOUT_TAG
 116                 fprintf(f, "enigma2 CVS TAG: " ENIGMA2_CHECKOUT_TAG "\n");
 117 #else
 118                 fprintf(f, "enigma2 compiled on " __DATE__ "\n");
 119 #endif
 120 #ifdef ENIGMA2_CHECKOUT_ROOT
 121                 fprintf(f, "enigma2 checked out from " ENIGMA2_CHECKOUT_ROOT "\n");
 122 #endif
 123                 fprintf(f, "please email this file to %s\n", crash_emailaddr);
 124                 std::string buffer = getLogBuffer();
 125                 fwrite(buffer.c_str(), buffer.size(), 1, f);
 126                 fclose(f);
 127
 128                 char cmd[256];
 129                 sprintf(cmd, "find /usr/lib/enigma2/python/ -name \"*.py\" | xargs md5sum >> %s", logfile);
 130                 system(cmd);
 131         }
 132
 133 #ifdef WITH_SDL
 134         ePtr<gSDLDC> my_dc;
 135         gSDLDC::getInstance(my_dc);
 136 #else
 137         ePtr<gFBDC> my_dc;
 138         gFBDC::getInstance(my_dc);
 139 #endif
 140
 141         {
 142                 gPainter p(my_dc);
 143                 p.resetOffset();
 144                 p.resetClip(eRect(ePoint(0, 0), my_dc->size()));
 145 #ifdef ENIGMA2_CHECKOUT_TAG
 146                 if (ENIGMA2_CHECKOUT_TAG[0] == 'T') /* tagged checkout (release) */
 147                         p.setBackgroundColor(gRGB(0x0000C0));
 148                 else if (ENIGMA2_CHECKOUT_TAG[0] == 'D') /* dated checkout (daily experimental build) */
 149                 {
 150                         srand(time(0));
 151                         int r = rand();
 152                         unsigned int col = 0;
 153                         if (r & 1)
 154                                 col |= 0x800000;
 155                         if (r & 2)
 156                                 col |= 0x008000;
 157                         if (r & 4)
 158                                 col |= 0x0000c0;
 159                         p.setBackgroundColor(gRGB(col));
 160                 }
 161 #else
 162                         p.setBackgroundColor(gRGB(0x008000));
 163 #endif
 164
 165                 p.setForegroundColor(gRGB(0xFFFFFF));
 166
 167                 ePtr<gFont> font = new gFont("Regular", 20);
 168                 p.setFont(font);
 169                 p.clear();
 170
 171                 eRect usable_area = eRect(100, 70, my_dc->size().width() - 150, 100);
 172
 173                 char text[512];
 174                 snprintf(text, 512, "We are really sorry. Your Dreambox encountered "
 175                         "a software problem, and needs to be restarted. "
 176                         "Please send the logfile created in /hdd/ to %s.\n"
 177                         "Your Dreambox restarts in 10 seconds!\n"
 178                         "Component: %s",
 179                         crash_emailaddr, crash_component);
 180
 181                 p.renderText(usable_area, text, gPainter::RT_WRAP|gPainter::RT_HALIGN_LEFT);
 182
 183                 usable_area = eRect(100, 170, my_dc->size().width() - 180, my_dc->size().height() - 20);
 184
 185                 int i;
 186
 187                 size_t start = std::string::npos + 1;
 188                 for (i=0; i<20; ++i)
 189                 {
 190                         start = lines.rfind('\n', start - 1);
 191                         if (start == std::string::npos)
 192                         {
 193                                 start = 0;
 194                                 break;
 195                         }
 196                 }
 197
 198                 font = new gFont("Regular", 14);
 199                 p.setFont(font);
 200
 201                 p.renderText(usable_area,
 202                         lines.substr(start), gPainter::RT_HALIGN_LEFT);
 203                 sleep(10);
 204         }
 205
 206         raise(SIGKILL);
 207 }
 208
 209 #if defined(__MIPSEL__)
 210 void oops(const mcontext_t &context, int dumpcode)
 211 {
 212         eDebug("PC: %08lx", (unsigned long)context.pc);
 213         int i;
 214         for (i=0; i<32; ++i)
 215         {
 216                 eDebugNoNewLine(" %08x", (int)context.gregs[i]);
 217                 if ((i&3) == 3)
 218                         eDebug("");
 219         }
 220                 /* this is temporary debug stuff. */
 221         if (dumpcode && ((unsigned long)context.pc) > 0x10000) /* not a zero pointer */
 222         {
 223                 eDebug("As a final action, i will try to dump a bit of code.");
 224                 eDebug("I just hope that this won't crash.");
 225                 int i;
 226                 eDebugNoNewLine("%08lx:", (unsigned long)context.pc);
 227                 for (i=0; i<0x20; ++i)
 228                         eDebugNoNewLine(" %02x", ((unsigned char*)context.pc)[i]);
 229                 eDebug(" (end)");
 230         }
 231 }
 232 #else
 233 #warning "no oops support!"
 234 #define NO_OOPS_SUPPORT
 235 #endif
 236
 237 void handleFatalSignal(int signum, siginfo_t *si, void *ctx)
 238 {
 239         ucontext_t *uc = (ucontext_t*)ctx;
 240         eDebug("KILLED BY signal %d", signum);
 241 #ifndef NO_OOPS_SUPPORT
 242         oops(uc->uc_mcontext, signum == SIGSEGV || signum == SIGABRT);
 243 #endif
 244         eDebug("-------");
 245         bsodFatal();
 246 }
 247
 248 void bsodCatchSignals()
 249 {
 250         struct sigaction act;
 251         act.sa_handler = SIG_DFL;
 252         act.sa_sigaction = handleFatalSignal;
 253         act.sa_flags = SA_RESTART | SA_SIGINFO;
 254         if (sigemptyset(&act.sa_mask) == -1)
 255                 perror("sigemptyset");
 256
 257                 /* start handling segfaults etc. */
 258         sigaction(SIGSEGV, &act, 0);
 259         sigaction(SIGILL, &act, 0);
 260         sigaction(SIGBUS, &act, 0);
 261         sigaction(SIGABRT, &act, 0);
 262 }
 263
 264 void bsodLogInit()
 265 {
 266         logOutput.connect(addToLogbuffer);
 267 }