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    /*	$OpenBSD: log.c,v 1.6 2017/03/21 12:06:55 bluhm Exp $ */  | 
    
    
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    /*  | 
    
    
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     * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>  | 
    
    
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     *  | 
    
    
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     * Permission to use, copy, modify, and distribute this software for any  | 
    
    
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     * purpose with or without fee is hereby granted, provided that the above  | 
    
    
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     * copyright notice and this permission notice appear in all copies.  | 
    
    
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     *  | 
    
    
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     * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES  | 
    
    
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     * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF  | 
    
    
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     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  | 
    
    
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     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES  | 
    
    
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     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN  | 
    
    
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     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  | 
    
    
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     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  | 
    
    
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     */  | 
    
    
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    #include <errno.h>  | 
    
    
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    #include <stdarg.h>  | 
    
    
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    #include <stdio.h>  | 
    
    
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    #include <stdlib.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #include <syslog.h>  | 
    
    
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    #include <time.h>  | 
    
    
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    #include <unistd.h>  | 
    
    
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    #include "log.h"  | 
    
    
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    #include "igmp.h"  | 
    
    
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    #include "dvmrpd.h"  | 
    
    
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    int		 debug;  | 
    
    
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    int		 verbose;  | 
    
    
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    const char	*log_procname;  | 
    
    
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    void  | 
    
    
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    log_init(int n_debug)  | 
    
    
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    { | 
    
    
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    	extern char	*__progname;  | 
    
    
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    	debug = n_debug;  | 
    
    
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    	if (!debug)  | 
    
    
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    		openlog(__progname, LOG_PID | LOG_NDELAY, LOG_DAEMON);  | 
    
    
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    	tzset();  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    log_verbose(int v)  | 
    
    
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    { | 
    
    
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    	verbose = v;  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    logit(int pri, const char *fmt, ...)  | 
    
    
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    { | 
    
    
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    	va_list	ap;  | 
    
    
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    	va_start(ap, fmt);  | 
    
    
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    	vlog(pri, fmt, ap);  | 
    
    
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    	va_end(ap);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    vlog(int pri, const char *fmt, va_list ap)  | 
    
    
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    { | 
    
    
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    	char	*nfmt;  | 
    
    
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    	if (debug) { | 
    
    
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    		/* best effort in out of mem situations */  | 
    
    
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    		if (asprintf(&nfmt, "%s\n", fmt) == -1) { | 
    
    
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    			vfprintf(stderr, fmt, ap);  | 
    
    
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    			fprintf(stderr, "\n");  | 
    
    
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    		} else { | 
    
    
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    			vfprintf(stderr, nfmt, ap);  | 
    
    
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    			free(nfmt);  | 
    
    
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    		}  | 
    
    
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    		fflush(stderr);  | 
    
    
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    	} else  | 
    
    
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    		vsyslog(pri, fmt, ap);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    log_warn(const char *emsg, ...)  | 
    
    
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    { | 
    
    
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    	char	*nfmt;  | 
    
    
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    	va_list	 ap;  | 
    
    
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    	/* best effort to even work in out of memory situations */  | 
    
    
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    	if (emsg == NULL)  | 
    
    
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    		logit(LOG_ERR, "%s", strerror(errno));  | 
    
    
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    	else { | 
    
    
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    		va_start(ap, emsg);  | 
    
    
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    		if (asprintf(&nfmt, "%s: %s", emsg, strerror(errno)) == -1) { | 
    
    
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    			/* we tried it... */  | 
    
    
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    			vlog(LOG_ERR, emsg, ap);  | 
    
    
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    			logit(LOG_ERR, "%s", strerror(errno));  | 
    
    
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    		} else { | 
    
    
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    			vlog(LOG_ERR, nfmt, ap);  | 
    
    
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    			free(nfmt);  | 
    
    
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    		}  | 
    
    
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    		va_end(ap);  | 
    
    
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    	}  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    log_warnx(const char *emsg, ...)  | 
    
    
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    { | 
    
    
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    	va_list	 ap;  | 
    
    
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    	va_start(ap, emsg);  | 
    
    
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    	vlog(LOG_ERR, emsg, ap);  | 
    
    
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    	va_end(ap);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    log_info(const char *emsg, ...)  | 
    
    
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    { | 
    
    
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    	va_list	 ap;  | 
    
    
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    	va_start(ap, emsg);  | 
    
    
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    	vlog(LOG_INFO, emsg, ap);  | 
    
    
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    	va_end(ap);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    log_debug(const char *emsg, ...)  | 
    
    
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    { | 
    
    
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    	va_list	 ap;  | 
    
    
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    	if (verbose) { | 
    
    
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    		va_start(ap, emsg);  | 
    
    
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    		vlog(LOG_DEBUG, emsg, ap);  | 
    
    
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    		va_end(ap);  | 
    
    
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    	}  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    fatal(const char *emsg)  | 
    
    
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    { | 
    
    
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    	if (emsg == NULL)  | 
    
    
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    		logit(LOG_CRIT, "fatal in %s: %s", log_procname,  | 
    
    
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    		    strerror(errno));  | 
    
    
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    	else  | 
    
    
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    		if (errno)  | 
    
    
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    			logit(LOG_CRIT, "fatal in %s: %s: %s",  | 
    
    
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    			    log_procname, emsg, strerror(errno));  | 
    
    
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    		else  | 
    
    
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    			logit(LOG_CRIT, "fatal in %s: %s",  | 
    
    
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    			    log_procname, emsg);  | 
    
    
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    	if (dvmrpd_process == PROC_MAIN)  | 
    
    
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    		exit(1);  | 
    
    
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    	else				/* parent copes via SIGCHLD */  | 
    
    
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    		_exit(1);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    fatalx(const char *emsg)  | 
    
    
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    { | 
    
    
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    	errno = 0;  | 
    
    
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    	fatal(emsg);  | 
    
    
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    }  |