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
13 static 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
27 struct tcpd_context tcpd_context;
28 jmp_buf tcpd_buf;
29
30 /* tcpd_diag - centralize error reporter */
31
tcpd_diag(int severity,char * tag,char * format,va_list ap)32 static 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
VARARGS(tcpd_warn,char *,format)46 void 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
VARARGS(tcpd_jump,char *,format)57 void 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