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/* Copyright (c) 1992 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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* 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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* isformat(s) returns true if s is of the form "FORMAT=*" |
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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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#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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#ifndef BSD |
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#define index strchr |
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#endif |
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#define MAXLINE 2048 |
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|
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extern char *index(); |
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extern time_t timegm(struct tm *tm); |
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|
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char FMTSTR[] = "FORMAT="; |
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int FMTSTRL = 7; |
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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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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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register FILE *fp; |
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{ |
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int quote; |
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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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while (ac-- > 0) { |
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if (index(*av, ' ') != NULL) { /* quote it */ |
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if (index(*av, '\'') != NULL) |
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quote = '"'; |
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else |
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quote = '\''; |
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putc(quote, fp); |
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fputs(*av++, fp); |
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putc(quote, fp); |
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} else |
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fputs(*av++, fp); |
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putc(' ', fp); |
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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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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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|
157 |
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void |
158 |
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printargs( /* print arguments to a file */ |
159 |
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int ac, |
160 |
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char **av, |
161 |
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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, |
174 |
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const char *s |
175 |
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) |
176 |
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{ |
177 |
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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; |
191 |
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void |
192 |
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fputformat( /* put out a format value */ |
193 |
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const char *s, |
194 |
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FILE *fp |
195 |
> |
) |
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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 */ |
204 |
< |
FILE *fp; |
205 |
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int (*f)(); |
206 |
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char *p; |
203 |
> |
int |
204 |
> |
getheader( /* get header from file */ |
205 |
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FILE *fp, |
206 |
> |
gethfunc *f, |
207 |
> |
void *p |
208 |
> |
) |
209 |
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{ |
210 |
+ |
int rtotal = 0; |
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char buf[MAXLINE]; |
212 |
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|
213 |
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for ( ; ; ) { |
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int rval = 0; |
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buf[MAXLINE-2] = '\n'; |
216 |
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if (fgets(buf, MAXLINE, fp) == NULL) |
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return(-1); |
218 |
< |
if (buf[0] == '\n') |
219 |
< |
return(0); |
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< |
#ifdef MSDOS |
105 |
< |
if (buf[0] == '\r' && buf[1] == '\n') |
106 |
< |
return(0); |
107 |
< |
#endif |
218 |
> |
if (buf[buf[0]=='\r'] == '\n') |
219 |
> |
return(rtotal); |
220 |
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if (buf[MAXLINE-2] != '\n') { |
221 |
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ungetc(buf[MAXLINE-2], fp); /* prevent false end */ |
222 |
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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 |
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} |
229 |
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|
234 |
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}; |
235 |
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|
236 |
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|
237 |
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static |
238 |
< |
mycheck(s, cp) /* check a header line for format info. */ |
239 |
< |
char *s; |
240 |
< |
register struct check *cp; |
237 |
> |
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 |
< |
|
141 |
< |
#ifdef COPYMATCH |
142 |
< |
copymatch(pat, str) |
143 |
< |
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; |
146 |
< |
register char *p = pat, *s = str; |
257 |
> |
int setmatch; |
258 |
|
|
259 |
|
do { |
260 |
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switch (*p) { |
261 |
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case '?': /* match any character */ |
262 |
|
if (!*s++) |
263 |
|
return(0); |
153 |
– |
docopy++; |
264 |
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break; |
265 |
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case '*': /* match any string */ |
266 |
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while (p[1] == '*') p++; |
267 |
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do |
268 |
< |
if ( (p[1]=='?' || p[1]==*s) |
269 |
< |
&& copymatch(p+1,s) ) { |
160 |
< |
strcpy(pat, str); |
268 |
> |
if ( (p[1]=='?') | (p[1]==*s) && |
269 |
> |
globmatch(p+1,s) ) |
270 |
|
return(1); |
162 |
– |
} |
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 |
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/* fall through */ |
298 |
|
break; |
299 |
|
} |
300 |
|
} while (*p++); |
175 |
– |
if (docopy) |
176 |
– |
strcpy(pat, str); |
301 |
|
return(1); |
302 |
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} |
179 |
– |
#else |
180 |
– |
#define copymatch(pat, s) (!strcmp(pat, s)) |
181 |
– |
#endif |
303 |
|
|
304 |
|
|
305 |
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/* |
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 |
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* 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 |
|
} |