| 1 | /* |
|---|---|
| 2 | * Copyright (c) 1996-1999 by Internet Software Consortium. |
| 3 | * |
| 4 | * Permission to use, copy, modify, and distribute this software for any |
| 5 | * purpose with or without fee is hereby granted, provided that the above |
| 6 | * copyright notice and this permission notice appear in all copies. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS |
| 9 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES |
| 10 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE |
| 11 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 12 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 13 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS |
| 14 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS |
| 15 | * SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #include <sys/types.h> |
| 19 | #include <sys/param.h> |
| 20 | #include <sys/socket.h> |
| 21 | |
| 22 | #include <netinet/in.h> |
| 23 | #include <arpa/inet.h> |
| 24 | #include <arpa/nameser.h> |
| 25 | |
| 26 | #include <ctype.h> |
| 27 | #include <resolv.h> |
| 28 | |
| 29 | static char |
| 30 | xtob(int c) { |
| 31 | return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); |
| 32 | } |
| 33 | |
| 34 | u_int |
| 35 | inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { |
| 36 | u_char c, nib; |
| 37 | u_int len = 0; |
| 38 | |
| 39 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { |
| 40 | if (c == '.' || c == '+' || c == '/') |
| 41 | continue; |
| 42 | if (!isascii(c)) |
| 43 | return (0); |
| 44 | c = toupper(c); |
| 45 | if (isxdigit(c)) { |
| 46 | nib = xtob(c); |
| 47 | c = *ascii++; |
| 48 | if (c != '\0') { |
| 49 | c = toupper(c); |
| 50 | if (isxdigit(c)) { |
| 51 | *binary++ = (nib << 4) | xtob(c); |
| 52 | len++; |
| 53 | } else |
| 54 | return (0); |
| 55 | } |
| 56 | else |
| 57 | return (0); |
| 58 | } |
| 59 | else |
| 60 | return (0); |
| 61 | } |
| 62 | return (len); |
| 63 | } |
| 64 | |
| 65 | char * |
| 66 | inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { |
| 67 | int nib; |
| 68 | int i; |
| 69 | static char tmpbuf[255*2 + 128]; |
| 70 | char *start; |
| 71 | |
| 72 | if (ascii) |
| 73 | start = ascii; |
| 74 | else { |
| 75 | ascii = tmpbuf; |
| 76 | start = tmpbuf; |
| 77 | } |
| 78 | |
| 79 | if (binlen > 255) |
| 80 | binlen = 255; |
| 81 | |
| 82 | for (i = 0; i < binlen; i++) { |
| 83 | nib = *binary >> 4; |
| 84 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
| 85 | nib = *binary++ & 0x0f; |
| 86 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
| 87 | if (((i % 2) == 0 && (i + 1) < binlen)) |
| 88 | *ascii++ = '.'; |
| 89 | } |
| 90 | *ascii = '\0'; |
| 91 | return (start); |
| 92 | } |
| 93 |