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_errno("vsnprintf failed");
  32                 return;
  33         }
  34
  35         str = malloc(st_add(str_len, 1));
  36         if (!str) {
  37                 warning_errno("malloc failed");
  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                 size_t offset = pos - str;
  47                 char *new_pos;
  48                 char *oldstr = str;
  49                 str = realloc(str, st_add(++str_len, 1));
  50                 if (!str) {
  51                         free(oldstr);
  52                         warning_errno("realloc failed");
  53                         return;
  54                 }
  55                 new_pos = str + offset;
  56                 memmove(new_pos + 2, new_pos + 1, strlen(new_pos));
  57                 new_pos[1] = ' ';
  58         }
  59
  60         switch (priority) {
  61         case LOG_EMERG:
  62         case LOG_ALERT:
  63         case LOG_CRIT:
  64         case LOG_ERR:
  65                 logtype = EVENTLOG_ERROR_TYPE;
  66                 break;
  67
  68         case LOG_WARNING:
  69                 logtype = EVENTLOG_WARNING_TYPE;
  70                 break;
  71
  72         case LOG_NOTICE:
  73         case LOG_INFO:
  74         case LOG_DEBUG:
  75         default:
  76                 logtype = EVENTLOG_INFORMATION_TYPE;
  77                 break;
  78         }
  79
  80         ReportEventA(ms_eventlog, logtype, 0, 0, NULL, 1, 0,
  81             (const char **)&str, NULL);
  82         free(str);
  83 }