static void
plugin_vlog (vpnconnect_plugin_log_flags_t flags, const char *name, const char *format, va_list arglist)
{
unsigned int msg_flags = 0;
if (!format)
return;
if (!name || name[0] == '\0')
{
msg (D_PLUGIN_DEBUG, "PLUGIN: suppressed log message from plugin with unknown name");
return;
}
if (flags & PLOG_ERR)
msg_flags = M_INFO | M_NONFATAL;
else if (flags & PLOG_WARN)
msg_flags = M_INFO | M_WARN;
else if (flags & PLOG_NOTE)
msg_flags = M_INFO;
else if (flags & PLOG_DEBUG)
msg_flags = D_PLUGIN_DEBUG;
if (flags & PLOG_ERRNO)
msg_flags |= M_ERRNO;
if (flags & PLOG_NOMUTE)
msg_flags |= M_NOMUTE;
if (MSG_TEST (msg_flags))
{
struct gc_arena gc;
char* msg_fmt;
/* Never add instance prefix; not thread safe */
msg_flags |= M_NOIPREFIX;
gc_init (&gc);
msg_fmt = gc_malloc (ERR_BUF_SIZE, false, &gc);
vpnconnect_snprintf (msg_fmt, ERR_BUF_SIZE, "PLUGIN %s: %s", name, format);
x_msg_va (msg_flags, msg_fmt, arglist);
gc_free (&gc);
}
}
void x_msg_va (const unsigned int flags, const char *format, va_list arglist)
{
struct gc_arena gc;
#if SYSLOG_CAPABILITY
int level;
#endif
char *m1;
char *m2;
char *tmp;
int e;
const char *prefix;
const char *prefix_sep;
void usage_small (void);
#ifndef HAVE_VARARG_MACROS
/* the macro has checked this otherwise */
if (!MSG_TEST (flags))
return;
#endif
e = openvpn_errno ();
/*
* Apply muting filter.
*/
#ifndef HAVE_VARARG_MACROS
/* the macro has checked this otherwise */
if (!dont_mute (flags))
return;
#endif
gc_init (&gc);
m1 = (char *) gc_malloc (ERR_BUF_SIZE, false, &gc);
m2 = (char *) gc_malloc (ERR_BUF_SIZE, false, &gc);
vsnprintf (m1, ERR_BUF_SIZE, format, arglist);
m1[ERR_BUF_SIZE - 1] = 0; /* windows vsnprintf needs this */
if ((flags & M_ERRNO) && e)
{
openvpn_snprintf (m2, ERR_BUF_SIZE, "%s: %s (errno=%d)",
m1, strerror_ts (e, &gc), e);
SWAP;
}
#ifdef ENABLE_CRYPTO
#ifdef ENABLE_CRYPTO_OPENSSL
if (flags & M_SSL)
{
int nerrs = 0;
int err;
while ((err = ERR_get_error ()))
{
openvpn_snprintf (m2, ERR_BUF_SIZE, "%s: %s",
m1, ERR_error_string (err, NULL));
SWAP;
++nerrs;
}
if (!nerrs)
{
openvpn_snprintf (m2, ERR_BUF_SIZE, "%s (OpenSSL)", m1);
SWAP;
}
}
#endif
#endif
if (flags & M_OPTERR)
{
openvpn_snprintf (m2, ERR_BUF_SIZE, "Options error: %s", m1);
SWAP;
}
#if SYSLOG_CAPABILITY
if (flags & (M_FATAL|M_NONFATAL|M_USAGE_SMALL))
level = LOG_ERR;
else if (flags & M_WARN)
level = LOG_WARNING;
else
level = LOG_NOTICE;
#endif
/* set up client prefix */
if (flags & M_NOIPREFIX)
prefix = NULL;
else
prefix = msg_get_prefix ();
prefix_sep = " ";
if (!prefix)
prefix_sep = prefix = "";
/* virtual output capability used to copy output to management subsystem */
if (!forked)
{
const struct virtual_output *vo = msg_get_virtual_output ();
if (vo)
{
openvpn_snprintf (m2, ERR_BUF_SIZE, "%s%s%s",
prefix,
prefix_sep,
m1);
virtual_output_print (vo, flags, m2);
}
}
if (!(flags & M_MSG_VIRT_OUT))
{
if (use_syslog && !std_redir && !forked)
{
#if SYSLOG_CAPABILITY
syslog (level, "%s%s%s",
prefix,
prefix_sep,
m1);
#endif
}
else
{
FILE *fp = msg_fp(flags);
const bool show_usec = check_debug_level (DEBUG_LEVEL_USEC_TIME);
if ((flags & M_NOPREFIX) || suppress_timestamps)
{
fprintf (fp, "%s%s%s%s",
prefix,
prefix_sep,
m1,
(flags&M_NOLF) ? "" : "\n");
}
else
{
fprintf (fp, "%s %s%s%s%s",
time_string (0, 0, show_usec, &gc),
prefix,
prefix_sep,
m1,
(flags&M_NOLF) ? "" : "\n");
}
fflush(fp);
++x_msg_line_num;
}
}
if (flags & M_FATAL)
msg (M_INFO, "Exiting due to fatal error");
if (flags & M_FATAL)
openvpn_exit (OPENVPN_EXIT_STATUS_ERROR); /* exit point */
if (flags & M_USAGE_SMALL)
usage_small ();
gc_free (&gc);
}