| darylm503 | d7ce700 | 2011-07-30 00:30:44 +0000 | [diff] [blame^] | 1 | /*
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| 2 | * Copyright (c) 1996, 1998 by Internet Software Consortium.
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| 3 | *
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| 4 | * Permission to use, copy, modify, and distribute this software for any
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| 5 | * purpose with or without fee is hereby granted, provided that the above
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| 6 | * copyright notice and this permission notice appear in all copies.
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| 7 | *
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| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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| 9 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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| 10 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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| 11 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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| 12 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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| 13 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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| 14 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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| 15 | * SOFTWARE.
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| 16 | */
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| 17 |
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| 18 | #if defined(LIBC_SCCS) && !defined(lint)
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| 19 | static char rcsid[] = "$Id: nsap_addr.c,v 1.1.1.1 2003/11/19 01:51:31 kyu3 Exp $";
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| 20 | #endif /* LIBC_SCCS and not lint */
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| 21 |
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| 22 | #include <sys/types.h>
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| 23 | #include <sys/param.h>
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| 24 | #include <sys/socket.h>
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| 25 | #include <netinet/in.h>
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| 26 | #include <arpa/inet.h>
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| 27 | #include <arpa/nameser.h>
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| 28 | #include <ctype.h>
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| 29 | #include <resolv.h>
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| 30 |
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| 31 | static char
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| 32 | xtob(
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| 33 | register int c
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| 34 | )
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| 35 | {
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| 36 | return (char)(c - (((c >= '0') && (c <= '9')) ? '0' : '7'));
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| 37 | }
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| 38 |
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| 39 | u_int
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| 40 | inet_nsap_addr(
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| 41 | const char *ascii,
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| 42 | u_char *binary,
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| 43 | int maxlen
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| 44 | )
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| 45 | {
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| 46 | u_char c, nib;
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| 47 | u_int len = 0;
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| 48 |
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| 49 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) {
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| 50 | if (c == '.' || c == '+' || c == '/')
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| 51 | continue;
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| 52 | if (!isascii(c))
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| 53 | return (0);
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| 54 | if (islower(c))
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| 55 | c = (u_char)( toupper(c));
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| 56 | if (isxdigit(c)) {
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| 57 | nib = xtob(c);
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| 58 | c = *ascii++;
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| 59 | if (c != '\0') {
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| 60 | c = (u_char)( toupper(c));
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| 61 | if (isxdigit(c)) {
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| 62 | *binary++ = (nib << 4) | xtob(c);
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| 63 | len++;
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| 64 | } else
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| 65 | return (0);
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| 66 | }
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| 67 | else
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| 68 | return (0);
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| 69 | }
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| 70 | else
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| 71 | return (0);
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| 72 | }
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| 73 | return (len);
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| 74 | }
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| 75 |
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| 76 | char *
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| 77 | inet_nsap_ntoa(
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| 78 | int binlen,
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| 79 | register const u_char *binary,
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| 80 | register char *ascii
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| 81 | )
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| 82 | {
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| 83 | register int nib;
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| 84 | int i;
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| 85 | static char tmpbuf[255*3];
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| 86 | char *start;
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| 87 |
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| 88 | if (ascii)
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| 89 | start = ascii;
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| 90 | else {
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| 91 | ascii = tmpbuf;
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| 92 | start = tmpbuf;
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| 93 | }
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| 94 |
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| 95 | if (binlen > 255)
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| 96 | binlen = 255;
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| 97 |
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| 98 | for (i = 0; i < binlen; i++) {
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| 99 | nib = *binary >> 4;
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| 100 | *ascii++ = (char)( nib + (nib < 10 ? '0' : '7'));
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| 101 | nib = *binary++ & 0x0f;
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| 102 | *ascii++ = (char)( nib + (nib < 10 ? '0' : '7'));
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| 103 | if (((i % 2) == 0 && (i + 1) < binlen))
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| 104 | *ascii++ = '.';
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| 105 | }
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| 106 | *ascii = '\0';
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| 107 | return (start);
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| 108 | }
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