projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | /* |
| 2 | * Copyright (c) 1996, 1998 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/cdefs.h> | |
| 19 | __FBSDID("$FreeBSD: src/lib/libc/net/nsap_addr.c,v 1.9 2002/03/22 21:52:29 obrien Exp $"); | |
| 20 | ||
| 21 | #include <sys/types.h> | |
| 22 | #include <sys/param.h> | |
| 23 | #include <sys/socket.h> | |
| 24 | #include <netinet/in.h> | |
| 25 | #include <arpa/inet.h> | |
| 26 | #include <arpa/nameser.h> | |
| 27 | #include <ctype.h> | |
| 28 | #include <resolv.h> | |
| 29 | ||
| 30 | static char | |
| 31 | xtob(c) | |
| 32 | int c; | |
| 33 | { | |
| 34 | return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); | |
| 35 | } | |
| 36 | ||
| 37 | u_int | |
| 38 | inet_nsap_addr(ascii, binary, maxlen) | |
| 39 | const char *ascii; | |
| 40 | u_char *binary; | |
| 41 | int maxlen; | |
| 42 | { | |
| 43 | u_char c, nib; | |
| 44 | u_int len = 0; | |
| 45 | ||
| 46 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { | |
| 47 | if (c == '.' || c == '+' || c == '/') | |
| 48 | continue; | |
| 49 | if (!isascii(c)) | |
| 50 | return (0); | |
| 51 | if (islower(c)) | |
| 52 | c = toupper(c); | |
| 53 | if (isxdigit(c)) { | |
| 54 | nib = xtob(c); | |
| 55 | c = *ascii++; | |
| 56 | if (c != '\0') { | |
| 57 | c = toupper(c); | |
| 58 | if (isxdigit(c)) { | |
| 59 | *binary++ = (nib << 4) | xtob(c); | |
| 60 | len++; | |
| 61 | } else | |
| 62 | return (0); | |
| 63 | } | |
| 64 | else | |
| 65 | return (0); | |
| 66 | } | |
| 67 | else | |
| 68 | return (0); | |
| 69 | } | |
| 70 | return (len); | |
| 71 | } | |
| 72 | ||
| 73 | char * | |
| 74 | inet_nsap_ntoa(binlen, binary, ascii) | |
| 75 | int binlen; | |
| 76 | const u_char *binary; | |
| 77 | char *ascii; | |
| 78 | { | |
| 79 | int nib; | |
| 80 | int i; | |
| 81 | static char tmpbuf[255*3]; | |
| 82 | char *start; | |
| 83 | ||
| 84 | if (ascii) | |
| 85 | start = ascii; | |
| 86 | else { | |
| 87 | ascii = tmpbuf; | |
| 88 | start = tmpbuf; | |
| 89 | } | |
| 90 | ||
| 91 | if (binlen > 255) | |
| 92 | binlen = 255; | |
| 93 | ||
| 94 | for (i = 0; i < binlen; i++) { | |
| 95 | nib = *binary >> 4; | |
| 96 | *ascii++ = nib + (nib < 10 ? '0' : '7'); | |
| 97 | nib = *binary++ & 0x0f; | |
| 98 | *ascii++ = nib + (nib < 10 ? '0' : '7'); | |
| 99 | if (((i % 2) == 0 && (i + 1) < binlen)) | |
| 100 | *ascii++ = '.'; | |
| 101 | } | |
| 102 | *ascii = '\0'; | |
| 103 | return (start); | |
| 104 | } | |
| 105 | ||
| 106 | /* | |
| 107 | * Weak aliases for applications that use certain private entry points, | |
| 108 | * and fail to include <arpa/inet.h>. | |
| 109 | */ | |
| 110 | #undef inet_nsap_addr | |
| 111 | __weak_reference(__inet_nsap_addr, inet_nsap_addr); | |
| 112 | #undef inet_nsap_ntoa | |
| 113 | __weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa); |