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mingw: implement syslog

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Syslog does not usually exist on Windows, so implement our own using
Window's ReportEvent mechanism.

Strings containing "%1" gets expanded into them selves by ReportEvent,
resulting in an unreadable string. "%2" and above is not a problem.
Unfortunately, on Windows an IPv6 address can contain "%1", so expand
"%1" to "% 1" before reporting. "%%1" is also a problem for ReportEvent,
but that string cannot occur in an IPv6 address.

Signed-off-by: Mike Pape <dotzenlabs@gmail.com>
Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Mike Pape
2010-11-04 02:35:10 +01:00
committed by Junio C Hamano
parent 772991af40
commit 088d880247
5 changed files with 96 additions and 4 deletions
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72
compat/win32/syslog.c Normal file
View File

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#include "../../git-compat-util.h"
#include "../../strbuf.h"
static HANDLE ms_eventlog;
void openlog(const char *ident, int logopt, int facility)
{
if (ms_eventlog)
return;
ms_eventlog = RegisterEventSourceA(NULL, ident);
if (!ms_eventlog)
warning("RegisterEventSource() failed: %lu", GetLastError());
}
void syslog(int priority, const char *fmt, ...)
{
struct strbuf sb = STRBUF_INIT;
struct strbuf_expand_dict_entry dict[] = {
{"1", "% 1"},
{NULL, NULL}
};
WORD logtype;
char *str;
int str_len;
va_list ap;
if (!ms_eventlog)
return;
va_start(ap, fmt);
str_len = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
if (str_len < 0) {
warning("vsnprintf failed: '%s'", strerror(errno));
return;
}
str = malloc(str_len + 1);
va_start(ap, fmt);
vsnprintf(str, str_len + 1, fmt, ap);
va_end(ap);
strbuf_expand(&sb, str, strbuf_expand_dict_cb, &dict);
free(str);
switch (priority) {
case LOG_EMERG:
case LOG_ALERT:
case LOG_CRIT:
case LOG_ERR:
logtype = EVENTLOG_ERROR_TYPE;
break;
case LOG_WARNING:
logtype = EVENTLOG_WARNING_TYPE;
break;
case LOG_NOTICE:
case LOG_INFO:
case LOG_DEBUG:
default:
logtype = EVENTLOG_INFORMATION_TYPE;
break;
}
ReportEventA(ms_eventlog, logtype, 0, 0, NULL, 1, 0,
(const char **)&sb.buf, NULL);
strbuf_release(&sb);
}