| 1 | /* |
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| 2 | * Copyright (c) 1996-1999 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 const char rcsid[] = "$BINDId: nsap_addr.c,v 8.10 1999/10/13 16:39:28 vixie 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 | |
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| 26 | #include <netinet/in.h> |
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| 27 | #include <arpa/inet.h> |
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| 28 | #include <arpa/nameser.h> |
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| 29 | |
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| 30 | #include <ctype.h> |
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| 31 | #include <resolv.h> |
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| 32 | |
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| 33 | #include "libc-symbols.h" |
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| 34 | |
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| 35 | static char |
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| 36 | xtob(int c) { |
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| 37 | return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); |
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| 38 | } |
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| 39 | |
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| 40 | u_int |
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| 41 | inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { |
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| 42 | u_char c, nib; |
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| 43 | u_int len = 0; |
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| 44 | |
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| 45 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { |
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| 46 | if (c == '.' || c == '+' || c == '/') |
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| 47 | continue; |
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| 48 | if (!isascii(c)) |
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| 49 | return (0); |
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| 50 | c = toupper(c); |
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| 51 | if (isxdigit(c)) { |
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| 52 | nib = xtob(c); |
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| 53 | c = *ascii++; |
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| 54 | if (c != '\0') { |
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| 55 | c = toupper(c); |
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| 56 | if (isxdigit(c)) { |
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| 57 | *binary++ = (nib << 4) | xtob(c); |
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| 58 | len++; |
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| 59 | } else |
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| 60 | return (0); |
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| 61 | } |
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| 62 | else |
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| 63 | return (0); |
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| 64 | } |
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| 65 | else |
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| 66 | return (0); |
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| 67 | } |
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| 68 | return (len); |
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| 69 | } |
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| 70 | |
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| 71 | char * |
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| 72 | inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { |
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| 73 | int nib; |
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| 74 | int i; |
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| 75 | static char tmpbuf[255*2 + 128]; |
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| 76 | char *start; |
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| 77 | |
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| 78 | if (ascii) |
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| 79 | start = ascii; |
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| 80 | else { |
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| 81 | ascii = tmpbuf; |
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| 82 | start = tmpbuf; |
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| 83 | } |
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| 84 | |
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| 85 | if (binlen > 255) |
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| 86 | binlen = 255; |
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| 87 | |
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| 88 | for (i = 0; i < binlen; i++) { |
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| 89 | nib = *binary >> 4; |
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| 90 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
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| 91 | nib = *binary++ & 0x0f; |
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| 92 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
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| 93 | if (((i % 2) == 0 && (i + 1) < binlen)) |
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| 94 | *ascii++ = '.'; |
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| 95 | } |
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| 96 | *ascii = '\0'; |
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| 97 | return (start); |
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| 98 | } |
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