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#include <ctype.h> /* ANSI C */
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <time.h>
#include "efaxmsg.h"
#define MAXTSTAMP 80 /* maximum length of a time stamp */
#define MAXMSGBUF 4096 /* maximum status/error message bytes held */
#define NLOG 2
char *verb[NLOG] = { "ewin", "" } ;
char *argv0 = "" ;
int nxtoptind = 1 ; /* for communication with nextopt() */
char *nxtoptarg ;
/* For systems without strerror(3) */
#ifdef NO_STRERROR
extern int sys_nerr;
extern char *sys_errlist[];
extern char *strerror( int i )
{
return ( i >= 0 && i < sys_nerr ) ? sys_errlist[i] : "Unknown Error" ;
}
#endif
/* Print time stamp. */
time_t tstamp ( time_t last, FILE *f )
{
time_t now ;
char tbuf [ MAXTSTAMP ] ;
now = time ( 0 ) ;
strftime ( tbuf, MAXTSTAMP, ( now - last > 600 ) ? "%c" : "%M:%S",
localtime( &now ) ) ;
fputs ( tbuf, f ) ;
return now ;
}
/* Return string corresponding to character c. */
char *cname ( uchar c )
{
#define CNAMEFMT "<0x%02x>"
#define CNAMELEN 6+1
static char *cnametab [ 256 ] = { /* character names */
"<NUL>","<SOH>","<STX>","<ETX>", "<EOT>","<ENQ>","<ACK>","<BEL>",
"<BS>", "<HT>", "<LF>", "<VT>", "<FF>", "<CR>", "<SO>", "<SI>",
"<DLE>","<XON>","<DC2>","<XOFF>","<DC4>","<NAK>","<SYN>","<ETB>",
"<CAN>","<EM>", "<SUB>","<ESC>", "<FS>", "<GS>", "<RS>", "<US>" } ;
static char names[ (127-32)*2 + 129*(CNAMELEN) ] ;
char *p=names ;
static int i=0 ;
if ( ! i ) {
for ( i=32 ; i<256 ; i++ ) {
cnametab [ i ] = p ;
sprintf ( p, i<127 ? "%c" : CNAMEFMT, i ) ;
p += strlen ( p ) + 1 ;
}
}
return cnametab [ c ] ;
}
/* Print a message with a variable number of printf()-type
arguments if the first character appears in the global
verb[ose] string. Other leading characters and digits do
additional actions: + allows the message to be continued on
the same line, '-' buffers the message instead of printing it,
E, and W expand into strings, S prints the error message for
the most recent system error, a digit sets the return value, a
space ends prefix but isn't printed. Returns 0 if no prefix
digit. */
enum msgflags { E=0x01, W=0x02, S=0x04, NOFLSH=0x08, NOLF=0x10 } ;
int msg ( char *fmt, ... )
{
static int init=0 ;
static FILE *logfile [ NLOG ] ;
static char msgbuf [ NLOG ] [ MAXMSGBUF ] ;
static time_t logtime [ NLOG ] = { 0, 0 } ;
static int atcol1 [ NLOG ] = { 1, 1 } ;
int err=0, i, flags=0 ;
char *p ;
va_list ap ;
va_start ( ap, fmt ) ;
if ( ! init ) {
logfile[0] = stderr ;
logfile[1] = stdout ;
for ( i=0 ; i<NLOG ; i++ )
setvbuf ( logfile[i], msgbuf[i], _IOFBF, MAXMSGBUF ) ;
cname ( 0 ) ;
init = 1 ;
}
for ( i=0 ; i<NLOG ; i++ ) {
for ( p=fmt ; *p ; p++ ) {
switch ( *p ) {
case ' ': p++ ; goto print ;
case 'E': flags |= E ; break ;
case 'W': flags |= W ; break ;
case 'S': flags |= S ; break ;
case '+': flags |= NOLF ; break ;
case '-': flags |= NOFLSH ; break ;
default:
if ( isdigit ( *p ) ) {
err = *p - '0' ;
} else if ( ! isupper ( *p ) ) {
goto print ;
}
}
}
print:
if ( strchr ( verb[i], tolower ( *fmt ) ) ) {
if ( atcol1[i] ) {
fprintf ( logfile[i], "%s: ", argv0 ) ;
logtime[i] = tstamp ( logtime[i], logfile[i] ) ;
fputs ( ( flags & E ) ? " Error: " :
( flags & W ) ? " Warning: " :
" ",
logfile[i] ) ;
}
vfprintf( logfile[i], p, ap ) ;
if ( flags & S ) fprintf ( logfile[i], " %s", strerror ( errno ) ) ;
if ( ! ( flags & NOLF ) ) fputs ( "\n", logfile[i] ) ;
atcol1[i] = flags & NOLF ? 0 : 1 ;
if ( ! ( flags & NOFLSH ) ) fflush ( logfile[i] ) ;
}
}
va_end ( ap ) ;
return err ;
}
/* Simple (one option per argument) version of getopt(3). */
int nextopt( int argc, char **argv, char *args )
{
char *a, *p ;
if ( nxtoptind >= argc || *(a = argv[nxtoptind]) != '-' ) return -1 ;
nxtoptind++ ;
if ( ! *(a+1) || ( ( p = strchr ( args, *(a+1) ) ) == 0 ) )
return msg ( "Eunknown option (%s)", a ), '?' ;
if ( *(p+1) != ':' ) nxtoptarg = 0 ;
else
if ( *(a+2) ) nxtoptarg = a+2 ;
else
if ( nxtoptind >= argc ) return msg ( "Eno argument for (%s)", a ), '?' ;
else nxtoptarg = argv [ nxtoptind++ ] ;
return *(a+1) ;
}
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