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/* Copyright (c) 1991 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* header.c - routines for reading and writing information headers. |
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* |
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* 8/19/88 |
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* Externals declared in resolu.h |
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* |
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* printargs(ac,av,fp) print an argument list to fp, followed by '\n' |
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* isformat(s) returns true if s is of the form "FORMAT=*" |
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* newheader(t,fp) start new information header identified by string t |
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* headidval(r,s) copy header identifier value in s to r |
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* dateval(t,s) get capture date value as UTC |
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* gmtval(t,s) get GMT as UTC |
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* fputdate(t,fp) put out the given UTC |
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* fputnow(fp) put out the current date and time |
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* printargs(ac,av,fp) print an argument list to fp, followed by '\n' |
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* formatval(r,s) copy the format value in s to r |
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* fputformat(s,fp) write "FORMAT=%s" to fp |
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* getheader(fp,f,p) read header from fp, calling f(s,p) on each line |
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* globmatch(pat, str) check for glob match of str against pat |
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* checkheader(i,p,o) check header format from i against p and copy to o |
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* |
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* To copy header from input to output, use getheader(fin, fputs, fout) |
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*/ |
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|
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#include <stdio.h> |
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#include "copyright.h" |
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|
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#include <ctype.h> |
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|
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#define MAXLINE 512 |
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#include "rtio.h" |
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#include "resolu.h" |
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|
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char FMTSTR[] = "FORMAT="; |
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int FMTSTRL = 7; |
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#define MAXLINE 2048 |
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|
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extern time_t timegm(struct tm *tm); |
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|
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printargs(ac, av, fp) /* print arguments to a file */ |
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int ac; |
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char **av; |
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FILE *fp; |
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const char HDRSTR[] = "#?"; /* information header magic number */ |
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|
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const char FMTSTR[] = "FORMAT="; /* format identifier */ |
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|
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const char TMSTR[] = "CAPDATE="; /* capture date identifier */ |
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const char GMTSTR[] = "GMT="; /* GMT identifier */ |
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|
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static gethfunc mycheck; |
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|
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|
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void |
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newheader( /* identifying line of information header */ |
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const char *s, |
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FILE *fp |
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) |
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{ |
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while (ac-- > 0) { |
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fputs(*av++, fp); |
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putc(' ', fp); |
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} |
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fputs(HDRSTR, fp); |
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fputs(s, fp); |
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putc('\n', fp); |
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} |
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|
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|
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isformat(s) /* is line a format line? */ |
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char *s; |
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int |
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headidval( /* get header id (return true if is id) */ |
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char *r, |
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const char *s |
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) |
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{ |
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return(!strncmp(s,FMTSTR,FMTSTRL)); |
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const char *cp = HDRSTR; |
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|
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while (*cp) if (*cp++ != *s++) return(0); |
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if (r == NULL) return(1); |
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while (*s && !isspace(*s)) *r++ = *s++; |
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*r = '\0'; |
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return(1); |
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} |
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|
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|
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formatval(r, s) /* return format value */ |
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register char *r; |
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register char *s; |
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int |
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dateval( /* convert capture date line to UTC */ |
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time_t *tloc, |
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const char *s |
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) |
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{ |
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s += FMTSTRL; |
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struct tm tms; |
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const char *cp = TMSTR; |
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|
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while (*cp) if (*cp++ != *s++) return(0); |
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while (isspace(*s)) s++; |
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if (!*s) { *r = '\0'; return; } |
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while(*s) *r++ = *s++; |
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while (isspace(r[-1])) r--; |
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if (!*s) return(0); |
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if (sscanf(s, "%d:%d:%d %d:%d:%d", |
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&tms.tm_year, &tms.tm_mon, &tms.tm_mday, |
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&tms.tm_hour, &tms.tm_min, &tms.tm_sec) != 6) |
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return(0); |
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if (tloc == NULL) |
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return(1); |
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tms.tm_mon--; |
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tms.tm_year -= 1900; |
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tms.tm_isdst = -1; /* ask mktime() to figure out DST */ |
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*tloc = mktime(&tms); |
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return(1); |
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} |
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|
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|
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int |
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gmtval( /* convert GMT date line to UTC */ |
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time_t *tloc, |
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const char *s |
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) |
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{ |
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struct tm tms; |
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const char *cp = GMTSTR; |
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|
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while (*cp) if (*cp++ != *s++) return(0); |
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while (isspace(*s)) s++; |
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if (!*s) return(0); |
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if (sscanf(s, "%d:%d:%d %d:%d:%d", |
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&tms.tm_year, &tms.tm_mon, &tms.tm_mday, |
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&tms.tm_hour, &tms.tm_min, &tms.tm_sec) != 6) |
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return(0); |
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if (tloc == NULL) |
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return(1); |
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tms.tm_mon--; |
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tms.tm_year -= 1900; |
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*tloc = timegm(&tms); |
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return(1); |
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} |
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|
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|
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void |
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fputdate( /* write out the given time value (local & GMT) */ |
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time_t tv, |
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FILE *fp |
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) |
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{ |
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struct tm *tms; |
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|
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tms = localtime(&tv); |
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if (tms != NULL) |
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> |
fprintf(fp, "%s %04d:%02d:%02d %02d:%02d:%02d\n", TMSTR, |
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tms->tm_year+1900, tms->tm_mon+1, tms->tm_mday, |
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tms->tm_hour, tms->tm_min, tms->tm_sec); |
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tms = gmtime(&tv); |
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if (tms != NULL) |
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fprintf(fp, "%s %04d:%02d:%02d %02d:%02d:%02d\n", GMTSTR, |
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tms->tm_year+1900, tms->tm_mon+1, tms->tm_mday, |
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tms->tm_hour, tms->tm_min, tms->tm_sec); |
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} |
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> |
|
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> |
|
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> |
void |
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> |
fputnow( /* write out the current time */ |
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FILE *fp |
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> |
) |
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{ |
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time_t tv; |
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time(&tv); |
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fputdate(tv, fp); |
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} |
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|
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|
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void |
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printargs( /* print arguments to a file */ |
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int ac, |
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char **av, |
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FILE *fp |
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> |
) |
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> |
{ |
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> |
while (ac-- > 0) { |
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> |
fputword(*av++, fp); |
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fputc(ac ? ' ' : '\n', fp); |
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} |
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> |
} |
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> |
|
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> |
|
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int |
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formatval( /* get format value (return true if format) */ |
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char *r, |
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const char *s |
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> |
) |
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> |
{ |
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> |
const char *cp = FMTSTR; |
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> |
|
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> |
while (*cp) if (*cp++ != *s++) return(0); |
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> |
while (isspace(*s)) s++; |
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> |
if (!*s) return(0); |
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> |
if (r == NULL) return(1); |
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do |
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*r++ = *s++; |
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> |
while (*s && !isspace(*s)); |
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*r = '\0'; |
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return(1); |
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} |
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|
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|
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< |
fputformat(s, fp) /* put out a format value */ |
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< |
char *s; |
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< |
FILE *fp; |
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> |
void |
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> |
fputformat( /* put out a format value */ |
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> |
const char *s, |
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> |
FILE *fp |
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> |
) |
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{ |
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fputs(FMTSTR, fp); |
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fputs(s, fp); |
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} |
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|
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|
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< |
getheader(fp, f, p) /* get header from file */ |
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< |
FILE *fp; |
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< |
int (*f)(); |
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< |
char *p; |
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> |
int |
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> |
getheader( /* get header from file */ |
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> |
FILE *fp, |
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> |
gethfunc *f, |
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> |
void *p |
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> |
) |
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{ |
| 210 |
+ |
int rtotal = 0; |
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char buf[MAXLINE]; |
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|
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for ( ; ; ) { |
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+ |
int rval = 0; |
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buf[MAXLINE-2] = '\n'; |
| 216 |
< |
if (fgets(buf, sizeof(buf), fp) == NULL) |
| 216 |
> |
if (fgets(buf, MAXLINE, fp) == NULL) |
| 217 |
|
return(-1); |
| 218 |
< |
if (buf[0] == '\n') |
| 219 |
< |
return(0); |
| 218 |
> |
if (buf[buf[0]=='\r'] == '\n') |
| 219 |
> |
return(rtotal); |
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if (buf[MAXLINE-2] != '\n') { |
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ungetc(buf[MAXLINE-2], fp); /* prevent false end */ |
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buf[MAXLINE-2] = '\0'; |
| 223 |
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} |
| 224 |
< |
if (f != NULL) |
| 225 |
< |
(*f)(buf, p); |
| 224 |
> |
if (f != NULL && (rval = (*f)(buf, p)) < 0) |
| 225 |
> |
return(-1); |
| 226 |
> |
rtotal += rval; |
| 227 |
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} |
| 228 |
|
} |
| 229 |
|
|
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}; |
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|
| 236 |
|
|
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< |
static |
| 238 |
< |
mycheck(s, cp) /* check a header line for format info. */ |
| 239 |
< |
char *s; |
| 240 |
< |
register struct check *cp; |
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> |
static int |
| 238 |
> |
mycheck( /* check a header line for format info. */ |
| 239 |
> |
char *s, |
| 240 |
> |
void *cp |
| 241 |
> |
) |
| 242 |
|
{ |
| 243 |
< |
if (!strncmp(s,FMTSTR,FMTSTRL)) |
| 244 |
< |
formatval(cp->fs, s); |
| 245 |
< |
else if (cp->fp != NULL) /* don't copy format info. */ |
| 246 |
< |
fputs(s, cp->fp); |
| 243 |
> |
if (!formatval(((struct check*)cp)->fs, s) |
| 244 |
> |
&& ((struct check*)cp)->fp != NULL) { |
| 245 |
> |
fputs(s, ((struct check*)cp)->fp); |
| 246 |
> |
} |
| 247 |
> |
return(0); |
| 248 |
|
} |
| 249 |
|
|
| 250 |
|
|
| 251 |
< |
/* |
| 252 |
< |
* Copymatch(pat,str) checks pat for wildcards, and |
| 253 |
< |
* copies str into pat if there is a match (returning true). |
| 254 |
< |
*/ |
| 255 |
< |
|
| 120 |
< |
#ifdef COPYMATCH |
| 121 |
< |
copymatch(pat, str) |
| 122 |
< |
char *pat, *str; |
| 251 |
> |
int |
| 252 |
> |
globmatch( /* check for match of s against pattern p */ |
| 253 |
> |
const char *p, |
| 254 |
> |
const char *s |
| 255 |
> |
) |
| 256 |
|
{ |
| 257 |
< |
int docopy = 0; |
| 125 |
< |
register char *p = pat, *s = str; |
| 257 |
> |
int setmatch; |
| 258 |
|
|
| 259 |
|
do { |
| 260 |
|
switch (*p) { |
| 261 |
|
case '?': /* match any character */ |
| 262 |
|
if (!*s++) |
| 263 |
|
return(0); |
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– |
docopy++; |
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break; |
| 265 |
|
case '*': /* match any string */ |
| 266 |
|
while (p[1] == '*') p++; |
| 267 |
|
do |
| 268 |
< |
if ( (p[1]=='?' || p[1]==*s) |
| 269 |
< |
&& copymatch(p+1,s) ) { |
| 139 |
< |
strcpy(pat, str); |
| 268 |
> |
if ( (p[1]=='?') | (p[1]==*s) && |
| 269 |
> |
globmatch(p+1,s) ) |
| 270 |
|
return(1); |
| 141 |
– |
} |
| 271 |
|
while (*s++); |
| 272 |
|
return(0); |
| 273 |
+ |
case '[': /* character set */ |
| 274 |
+ |
setmatch = *s == *++p; |
| 275 |
+ |
if (!*p) |
| 276 |
+ |
return(0); |
| 277 |
+ |
while (*++p != ']') { |
| 278 |
+ |
if (!*p) |
| 279 |
+ |
return(0); |
| 280 |
+ |
if (*p == '-') { |
| 281 |
+ |
setmatch += (p[-1] <= *s && *s <= p[1]); |
| 282 |
+ |
if (!*++p) |
| 283 |
+ |
break; |
| 284 |
+ |
} else |
| 285 |
+ |
setmatch += (*p == *s); |
| 286 |
+ |
} |
| 287 |
+ |
if (!setmatch) |
| 288 |
+ |
return(0); |
| 289 |
+ |
s++; |
| 290 |
+ |
break; |
| 291 |
|
case '\\': /* literal next */ |
| 292 |
|
p++; |
| 293 |
|
/* fall through */ |
| 298 |
|
break; |
| 299 |
|
} |
| 300 |
|
} while (*p++); |
| 154 |
– |
if (docopy) |
| 155 |
– |
strcpy(pat, str); |
| 301 |
|
return(1); |
| 302 |
|
} |
| 158 |
– |
#else |
| 159 |
– |
#define copymatch(pat, s) (!strcmp(pat, s)) |
| 160 |
– |
#endif |
| 303 |
|
|
| 304 |
|
|
| 305 |
|
/* |
| 310 |
|
* if any input format is found (or there is an error), and 0 otherwise. |
| 311 |
|
* If fmt contains any '*' or '?' characters, then checkheader |
| 312 |
|
* does wildcard expansion and copies a matching result into fmt. |
| 313 |
< |
* Be sure that fmt is big enough to hold the match in such cases! |
| 313 |
> |
* Be sure that fmt is big enough to hold the match in such cases, |
| 314 |
> |
* and that it is not a static, read-only string! |
| 315 |
|
* The input header (minus any format lines) is copied to fout |
| 316 |
|
* if fout is not NULL. |
| 317 |
|
*/ |
| 318 |
|
|
| 319 |
< |
checkheader(fin, fmt, fout) |
| 320 |
< |
FILE *fin; |
| 321 |
< |
char *fmt; |
| 322 |
< |
FILE *fout; |
| 319 |
> |
int |
| 320 |
> |
checkheader( |
| 321 |
> |
FILE *fin, |
| 322 |
> |
char *fmt, |
| 323 |
> |
FILE *fout |
| 324 |
> |
) |
| 325 |
|
{ |
| 326 |
|
struct check cdat; |
| 327 |
+ |
char *cp; |
| 328 |
|
|
| 329 |
|
cdat.fp = fout; |
| 330 |
|
cdat.fs[0] = '\0'; |
| 331 |
|
if (getheader(fin, mycheck, &cdat) < 0) |
| 332 |
|
return(-1); |
| 333 |
< |
if (cdat.fs[0] != '\0') |
| 334 |
< |
return(copymatch(fmt, cdat.fs) ? 1 : -1); |
| 335 |
< |
return(0); |
| 333 |
> |
if (!cdat.fs[0]) |
| 334 |
> |
return(0); |
| 335 |
> |
for (cp = fmt; *cp; cp++) /* check for globbing */ |
| 336 |
> |
if ((*cp == '?') | (*cp == '*')) { |
| 337 |
> |
if (globmatch(fmt, cdat.fs)) { |
| 338 |
> |
strcpy(fmt, cdat.fs); |
| 339 |
> |
return(1); |
| 340 |
> |
} else |
| 341 |
> |
return(-1); |
| 342 |
> |
} |
| 343 |
> |
return(strcmp(fmt, cdat.fs) ? -1 : 1); /* literal match */ |
| 344 |
|
} |
