compat/win32/syslog.c

   1 #include "../../git-compat-util.h"
   2
   3 static HANDLE ms_eventlog;
   4
   5 void openlog(const char *ident, int logopt, int facility)
   6 {
   7         if (ms_eventlog)
   8                 return;
   9
  10         ms_eventlog = RegisterEventSourceA(NULL, ident);
  11
  12         if (!ms_eventlog)
  13                 warning("RegisterEventSource() failed: %lu", GetLastError());
  14 }
  15
  16 void syslog(int priority, const char *fmt, ...)
  17 {
  18         WORD logtype;
  19         char *str, *pos;
  20         int str_len;
  21         va_list ap;
  22
  23         if (!ms_eventlog)
  24                 return;
  25
  26         va_start(ap, fmt);
  27         str_len = vsnprintf(NULL, 0, fmt, ap);
  28         va_end(ap);
  29
  30         if (str_len < 0) {
  31                 warning("vsnprintf failed: '%s'", strerror(errno));
  32                 return;
  33         }
  34
  35         str = malloc(str_len + 1);
  36         if (!str) {
  37                 warning("malloc failed: '%s'", strerror(errno));
  38                 return;
  39         }
  40
  41         va_start(ap, fmt);
  42         vsnprintf(str, str_len + 1, fmt, ap);
  43         va_end(ap);
  44
  45         while ((pos = strstr(str, "%1")) != NULL) {
  46                 str = realloc(str, ++str_len + 1);
  47                 if (!str) {
  48                         warning("realloc failed: '%s'", strerror(errno));
  49                         return;
  50                 }
  51                 memmove(pos + 2, pos + 1, strlen(pos));
  52                 pos[1] = ' ';
  53         }
  54
  55         switch (priority) {
  56         case LOG_EMERG:
  57         case LOG_ALERT:
  58         case LOG_CRIT:
  59         case LOG_ERR:
  60                 logtype = EVENTLOG_ERROR_TYPE;
  61                 break;
  62
  63         case LOG_WARNING:
  64                 logtype = EVENTLOG_WARNING_TYPE;
  65                 break;
  66
  67         case LOG_NOTICE:
  68         case LOG_INFO:
  69         case LOG_DEBUG:
  70         default:
  71                 logtype = EVENTLOG_INFORMATION_TYPE;
  72                 break;
  73         }
  74
  75         ReportEventA(ms_eventlog, logtype, 0, 0, NULL, 1, 0,
  76             (const char **)&str, NULL);
  77         free(str);
  78 }