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/* Distributed Checksum Clearinghouse
*
* Copyright (c) 2005 by Rhyolite Software
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Rhyolite Software DCC 1.2.74-1.28 $Revision$
*/
#include "dcc_defs.h"
#include "dcc_paths.h"
#ifndef DCC_WIN32
#include <syslog.h>
#endif
extern void dcc_syslog_lock(void);
extern void dcc_syslog_unlock(void);
u_char dcc_no_syslog;
int dcc_error_priority = LOG_ERR | LOG_MAIL;
int dcc_trace_priority = LOG_NOTICE | LOG_MAIL;
/* commonly used, but not thread safe */
int dcc_ex_code = EX_UNAVAILABLE;
DCC_PATH dcc_progname;
#ifdef HAVE___PROGNAME
extern const char *__progname;
#endif
void
dcc_syslog_init(u_char use_syslog,
const char *argv0 UATTRIB, const char *suffix)
{
const char *p;
#ifndef DCC_WIN32
struct stat sb;
int fd;
#endif
/* Solaris defaults to "syslog" with a null identification string,
* but does not seem to have __progname set by crt0. */
#undef GOT_PROGNAME
#ifdef HAVE_GETPROGNAME
p = getprogname();
# define GOT_PROGNAME
#endif
#if defined(HAVE___PROGNAME) && !defined(GOT_PROGNAME)
p = __progname;
# define GOT_PROGNAME
#endif
#ifndef GOT_PROGNAME
p = strrchr(argv0, '/');
if (!p)
p = argv0;
else
++p;
#endif
snprintf(dcc_progname, sizeof(dcc_progname), "%s%s",
p, suffix ? suffix : "");
#ifdef DCC_WIN32
dcc_no_syslog = 1;
#else
/* Don't wait for the console if somehow we must use it,
* because that messes up dccm. */
#ifndef LOG_NOWAIT
#define LOG_NOWAIT 0
#endif
openlog(dcc_progname, LOG_PID | LOG_NOWAIT, LOG_MAIL);
dcc_no_syslog = !use_syslog;
/* ensure that stdout and stderr exist so that when we open
* database or other files, we don't get file descriptor 1 or 2
* and then later write error messages to them. */
if (0 > fstat(STDOUT_FILENO, &sb) && errno == EBADF) {
fd = open(_PATH_DEVNULL, 0, O_RDWR);
if (fd < 0)
return;
if (fd != STDOUT_FILENO) {
dup2(fd, STDOUT_FILENO);
close(fd);
}
}
if (0 > fstat(STDERR_FILENO, &sb) && errno == EBADF) {
fd = open(_PATH_DEVNULL, 0, O_RDWR);
if (fd < 0)
return;
if (fd != STDERR_FILENO) {
dup2(fd, STDERR_FILENO);
close(fd);
}
}
#endif /* DCC_WIN32 */
}
void
dcc_vfatal_msg(const char *p, va_list args)
{
char sbuf[200];
int i;
COPY_DCC_ARGS2();
fflush(stdout); /* keep stderr and stdout straight */
vfprintf(stderr, p, DCC_ARGS2);
fputs("; fatal error\n", stderr);
fflush(stderr);
END_DCC_ARGS2();
if (dcc_no_syslog)
return;
dcc_syslog_lock();
/* try to write the message with the "fatal error" addition as
* a single message */
i = vsnprintf(sbuf, sizeof(sbuf), p, args);
if (i < ISZ(sbuf)-ISZ("fatal error")) {
syslog(dcc_error_priority, "%s; fatal error", sbuf);
} else {
vsyslog(dcc_error_priority, p, args);
syslog(dcc_error_priority, "fatal error");
}
dcc_syslog_unlock();
}
void
dcc_verror_msg(const char *p, va_list args)
{
COPY_DCC_ARGS2();
fflush(stdout); /* keep stderr and stdout straight */
vfprintf(stderr, p, DCC_ARGS2);
fputc('\n', stderr);
END_DCC_ARGS2();
if (dcc_no_syslog)
return;
dcc_syslog_lock();
vsyslog(dcc_error_priority, p, args);
dcc_syslog_unlock();
}
void PATTRIB(1,2)
dcc_error_msg(const char *p, ...)
{
va_list args;
va_start(args, p);
dcc_verror_msg(p, args);
va_end(args);
}
void
dcc_vtrace_msg(const char *p, va_list args)
{
COPY_DCC_ARGS2();
fflush(stdout); /* keep stderr and stdout straight */
vfprintf(stderr, p, DCC_ARGS2);
fputc('\n', stderr);
END_DCC_ARGS2();
if (dcc_no_syslog)
return;
dcc_syslog_lock();
vsyslog(dcc_trace_priority, p, args);
dcc_syslog_unlock();
}
void PATTRIB(1,2)
dcc_trace_msg(const char *p, ...)
{
va_list args;
va_start(args, p);
dcc_vtrace_msg(p, args);
va_end(args);
}
void
dcc_vpemsg(int ex_code, DCC_EMSG emsg, const char *msg, va_list args)
{
if (!emsg) {
dcc_verror_msg(msg, args);
} else {
dcc_ex_code = ex_code;
vsnprintf(emsg, sizeof(DCC_EMSG), msg, args);
}
}
void PATTRIB(3,4)
dcc_pemsg(int ex_code, DCC_EMSG emsg, const char *msg, ...)
{
va_list args;
va_start(args, msg);
dcc_vpemsg(ex_code, emsg, msg, args);
va_end(args);
}
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