17c478bd9Sstevel@tonic-gate /*
2*9525b14bSRao Shoaib * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
37c478bd9Sstevel@tonic-gate * Copyright (c) 2001 by Internet Software Consortium.
47c478bd9Sstevel@tonic-gate *
57c478bd9Sstevel@tonic-gate * Permission to use, copy, modify, and distribute this software for any
67c478bd9Sstevel@tonic-gate * purpose with or without fee is hereby granted, provided that the above
77c478bd9Sstevel@tonic-gate * copyright notice and this permission notice appear in all copies.
87c478bd9Sstevel@tonic-gate *
9*9525b14bSRao Shoaib * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10*9525b14bSRao Shoaib * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11*9525b14bSRao Shoaib * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
12*9525b14bSRao Shoaib * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13*9525b14bSRao Shoaib * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14*9525b14bSRao Shoaib * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15*9525b14bSRao Shoaib * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
167c478bd9Sstevel@tonic-gate */
177c478bd9Sstevel@tonic-gate
187c478bd9Sstevel@tonic-gate #include <port_before.h>
197c478bd9Sstevel@tonic-gate #include <ctype.h>
207c478bd9Sstevel@tonic-gate #include <stdio.h>
217c478bd9Sstevel@tonic-gate #include <string.h>
227c478bd9Sstevel@tonic-gate #include <isc/misc.h>
237c478bd9Sstevel@tonic-gate #include <port_after.h>
247c478bd9Sstevel@tonic-gate
257c478bd9Sstevel@tonic-gate static const char hex[17] = "0123456789abcdef";
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate int
isc_gethexstring(unsigned char * buf,size_t len,int count,FILE * fp,int * multiline)287c478bd9Sstevel@tonic-gate isc_gethexstring(unsigned char *buf, size_t len, int count, FILE *fp,
297c478bd9Sstevel@tonic-gate int *multiline)
307c478bd9Sstevel@tonic-gate {
317c478bd9Sstevel@tonic-gate int c, n;
327c478bd9Sstevel@tonic-gate unsigned char x;
337c478bd9Sstevel@tonic-gate char *s;
347c478bd9Sstevel@tonic-gate int result = count;
357c478bd9Sstevel@tonic-gate
36*9525b14bSRao Shoaib x = 0; /*%< silence compiler */
377c478bd9Sstevel@tonic-gate n = 0;
387c478bd9Sstevel@tonic-gate while (count > 0) {
397c478bd9Sstevel@tonic-gate c = fgetc(fp);
407c478bd9Sstevel@tonic-gate
417c478bd9Sstevel@tonic-gate if ((c == EOF) ||
427c478bd9Sstevel@tonic-gate (c == '\n' && !*multiline) ||
437c478bd9Sstevel@tonic-gate (c == '(' && *multiline) ||
447c478bd9Sstevel@tonic-gate (c == ')' && !*multiline))
457c478bd9Sstevel@tonic-gate goto formerr;
467c478bd9Sstevel@tonic-gate /* comment */
477c478bd9Sstevel@tonic-gate if (c == ';') {
48*9525b14bSRao Shoaib do {
49*9525b14bSRao Shoaib c = fgetc(fp);
50*9525b14bSRao Shoaib } while (c != EOF && c != '\n');
517c478bd9Sstevel@tonic-gate if (c == '\n' && *multiline)
527c478bd9Sstevel@tonic-gate continue;
537c478bd9Sstevel@tonic-gate goto formerr;
547c478bd9Sstevel@tonic-gate }
557c478bd9Sstevel@tonic-gate /* white space */
567c478bd9Sstevel@tonic-gate if (c == ' ' || c == '\t' || c == '\n' || c == '\r')
577c478bd9Sstevel@tonic-gate continue;
587c478bd9Sstevel@tonic-gate /* multiline */
597c478bd9Sstevel@tonic-gate if ('(' == c || c == ')') {
607c478bd9Sstevel@tonic-gate *multiline = (c == '(' /*)*/);
617c478bd9Sstevel@tonic-gate continue;
627c478bd9Sstevel@tonic-gate }
637c478bd9Sstevel@tonic-gate if ((s = strchr(hex, tolower(c))) == NULL)
647c478bd9Sstevel@tonic-gate goto formerr;
657c478bd9Sstevel@tonic-gate x = (x<<4) | (s - hex);
667c478bd9Sstevel@tonic-gate if (++n == 2) {
67*9525b14bSRao Shoaib if (len > 0U) {
687c478bd9Sstevel@tonic-gate *buf++ = x;
697c478bd9Sstevel@tonic-gate len--;
707c478bd9Sstevel@tonic-gate } else
717c478bd9Sstevel@tonic-gate result = -1;
727c478bd9Sstevel@tonic-gate count--;
737c478bd9Sstevel@tonic-gate n = 0;
747c478bd9Sstevel@tonic-gate }
757c478bd9Sstevel@tonic-gate }
767c478bd9Sstevel@tonic-gate return (result);
777c478bd9Sstevel@tonic-gate
787c478bd9Sstevel@tonic-gate formerr:
797c478bd9Sstevel@tonic-gate if (c == '\n')
807c478bd9Sstevel@tonic-gate ungetc(c, fp);
817c478bd9Sstevel@tonic-gate return (-1);
827c478bd9Sstevel@tonic-gate }
837c478bd9Sstevel@tonic-gate
847c478bd9Sstevel@tonic-gate void
isc_puthexstring(FILE * fp,const unsigned char * buf,size_t buflen,size_t len1,size_t len2,const char * sep)857c478bd9Sstevel@tonic-gate isc_puthexstring(FILE *fp, const unsigned char *buf, size_t buflen,
867c478bd9Sstevel@tonic-gate size_t len1, size_t len2, const char *sep)
877c478bd9Sstevel@tonic-gate {
887c478bd9Sstevel@tonic-gate size_t i = 0;
897c478bd9Sstevel@tonic-gate
90*9525b14bSRao Shoaib if (len1 < 4U)
917c478bd9Sstevel@tonic-gate len1 = 4;
92*9525b14bSRao Shoaib if (len2 < 4U)
937c478bd9Sstevel@tonic-gate len2 = 4;
94*9525b14bSRao Shoaib while (buflen > 0U) {
957c478bd9Sstevel@tonic-gate fputc(hex[(buf[0]>>4)&0xf], fp);
967c478bd9Sstevel@tonic-gate fputc(hex[buf[0]&0xf], fp);
977c478bd9Sstevel@tonic-gate i += 2;
987c478bd9Sstevel@tonic-gate buflen--;
997c478bd9Sstevel@tonic-gate buf++;
1007c478bd9Sstevel@tonic-gate if (i >= len1 && sep != NULL) {
1017c478bd9Sstevel@tonic-gate fputs(sep, fp);
1027c478bd9Sstevel@tonic-gate i = 0;
1037c478bd9Sstevel@tonic-gate len1 = len2;
1047c478bd9Sstevel@tonic-gate }
1057c478bd9Sstevel@tonic-gate }
1067c478bd9Sstevel@tonic-gate }
1077c478bd9Sstevel@tonic-gate
1087c478bd9Sstevel@tonic-gate void
isc_tohex(const unsigned char * buf,size_t buflen,char * t)1097c478bd9Sstevel@tonic-gate isc_tohex(const unsigned char *buf, size_t buflen, char *t) {
110*9525b14bSRao Shoaib while (buflen > 0U) {
1117c478bd9Sstevel@tonic-gate *t++ = hex[(buf[0]>>4)&0xf];
1127c478bd9Sstevel@tonic-gate *t++ = hex[buf[0]&0xf];
1137c478bd9Sstevel@tonic-gate buf++;
1147c478bd9Sstevel@tonic-gate buflen--;
1157c478bd9Sstevel@tonic-gate }
1167c478bd9Sstevel@tonic-gate *t = '\0';
1177c478bd9Sstevel@tonic-gate }
118*9525b14bSRao Shoaib
119*9525b14bSRao Shoaib /*! \file */
120