124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/***
|
|
This file is part of avahi.
|
|
|
|
avahi is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as
|
|
published by the Free Software Foundation; either version 2.1 of the
|
|
License, or (at your option) any later version.
|
|
|
|
avahi is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
|
Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with avahi; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
USA.
|
|
***/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include <config.h>
|
|
#endif
|
|
|
|
#include <pthread.h>
|
|
#include <unistd.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
#include <stdarg.h>
|
|
#include <syslog.h>
|
|
|
|
#include "warn.h"
|
|
|
|
#ifndef COMPAT_LAYER
|
|
#define COMPAT_LAYER "Apple Bonjour"
|
|
#endif
|
|
|
|
#ifndef CGI_SUBSYSTEM
|
|
#define CGI_SUBSYSTEM "libdns_sd"
|
|
#endif
|
|
|
|
static pthread_mutex_t linkage_mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
static int linkage_warning = 0;
|
|
|
|
const char *avahi_exe_name(void) {
|
|
#ifdef HAVE_GETPROGNAME
|
|
return getprogname();
|
|
#elif defined(__linux__)
|
|
static char exe_name[1024] = "";
|
|
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
|
|
|
|
/* Yes, I know, this is not portable. But who cares? It's for
|
|
* cosmetics only, anyway. */
|
|
|
|
pthread_mutex_lock(&mutex);
|
|
|
|
if (exe_name[0] == 0) {
|
|
int k;
|
|
|
|
if ((k = readlink("/proc/self/exe", exe_name, sizeof(exe_name)-1)) < 0)
|
|
snprintf(exe_name, sizeof(exe_name), "(unknown)");
|
|
else {
|
|
char *slash;
|
|
|
|
assert((size_t) k <= sizeof(exe_name)-1);
|
|
exe_name[k] = 0;
|
|
|
|
if ((slash = strrchr(exe_name, '/')))
|
|
memmove(exe_name, slash+1, strlen(slash)+1);
|
|
}
|
|
}
|
|
|
|
pthread_mutex_unlock(&mutex);
|
|
|
|
return exe_name;
|
|
#else
|
|
#ifdef __GNUC__
|
|
#warning "avahi_exe_name() needs to be implemented for your operating system"
|
|
#endif
|
|
return "(unknown)";
|
|
#endif
|
|
}
|
|
|
|
void avahi_warn(const char *fmt, ...) {
|
|
char msg[512] = "*** WARNING *** ";
|
|
va_list ap;
|
|
size_t n;
|
|
|
|
assert(fmt);
|
|
|
|
va_start(ap, fmt);
|
|
n = strlen(msg);
|
|
vsnprintf(msg + n, sizeof(msg) - n, fmt, ap);
|
|
va_end(ap);
|
|
|
|
fprintf(stderr, "%s\n", msg);
|
|
|
|
openlog(avahi_exe_name(), LOG_PID, LOG_USER);
|
|
syslog(LOG_WARNING, "%s", msg);
|
|
closelog();
|
|
}
|
|
|
|
void avahi_warn_linkage(void) {
|
|
int w;
|
|
|
|
pthread_mutex_lock(&linkage_mutex);
|
|
w = linkage_warning;
|
|
linkage_warning = 1;
|
|
pthread_mutex_unlock(&linkage_mutex);
|
|
|
|
if (!w && !getenv("AVAHI_COMPAT_NOWARN")) {
|
|
avahi_warn("The program '%s' uses the "COMPAT_LAYER" compatibility layer of Avahi.", avahi_exe_name());
|
|
avahi_warn("Please fix your application to use the native API of Avahi!");
|
|
avahi_warn("For more information see <http://0pointer.de/avahi-compat?s="CGI_SUBSYSTEM"&e=%s>", avahi_exe_name());
|
|
}
|
|
}
|
|
|
|
void avahi_warn_unsupported(const char *function) {
|
|
avahi_warn("The program '%s' called '%s()' which is not supported (or only supported partially) in the "COMPAT_LAYER" compatibility layer of Avahi.", avahi_exe_name(), function);
|
|
avahi_warn("Please fix your application to use the native API of Avahi!");
|
|
avahi_warn("For more information see <http://0pointer.de/avahi-compat?s="CGI_SUBSYSTEM"&e=%s&f=%s>", avahi_exe_name(), function);
|
|
}
|