1 /*
2  * Routines to report various classes of problems. Each report is decorated
3  * with the current context (file name and line number), if available.
4  *
5  * tcpd_warn() reports a problem and proceeds.
6  *
7  * tcpd_jump() reports a problem and jumps.
8  *
9  * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands.
10  */
11
12#ifndef lint
13static char sccsid[] = "@(#) diag.c 1.1 94/12/28 17:42:20";
14#endif
15
16/* System libraries */
17
18#include <syslog.h>
19#include <stdio.h>
20#include <setjmp.h>
21
22/* Local stuff */
23
24#include "tcpd.h"
25#include "mystdarg.h"
26
27struct tcpd_context tcpd_context;
28jmp_buf tcpd_buf;
29
30/* tcpd_diag - centralize error reporter */
31
32static void tcpd_diag(int severity, char *tag, char *format, va_list ap)
33{
34    char    fmt[BUFSIZ];
35
36    if (tcpd_context.file)
37	sprintf(fmt, "%s: %s, line %d: %s",
38		tag, tcpd_context.file, tcpd_context.line, format);
39    else
40	sprintf(fmt, "%s: %s", tag, format);
41    vsyslog(severity, fmt, ap);
42}
43
44/* tcpd_warn - report problem of some sort and proceed */
45
46void    VARARGS(tcpd_warn, char *, format)
47{
48    va_list ap;
49
50    VASTART(ap, char *, format);
51    tcpd_diag(LOG_WARNING, "warning", format, ap);
52    VAEND(ap);
53}
54
55/* tcpd_jump - report serious problem and jump */
56
57void    VARARGS(tcpd_jump, char *, format)
58{
59    va_list ap;
60
61    VASTART(ap, char *, format);
62    tcpd_diag(LOG_ERR, "error", format, ap);
63    VAEND(ap);
64    longjmp(tcpd_buf, AC_ERROR);
65}
66