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 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 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 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