1 | /* |
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2 | * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") |
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3 | * Copyright (c) 1996-1999 by Internet Software Consortium. |
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4 | * |
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5 | * Permission to use, copy, modify, and distribute this software for any |
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6 | * purpose with or without fee is hereby granted, provided that the above |
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7 | * copyright notice and this permission notice appear in all copies. |
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8 | * |
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9 | * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES |
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10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR |
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12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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15 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 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[] = "$Id: nsap_addr.c,v 1.3.18.2 2005/07/28 07:38:08 marka Exp $"; |
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20 | #endif /* LIBC_SCCS and not lint */ |
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21 | #include <sys/cdefs.h> |
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22 | __FBSDID("$FreeBSD$"); |
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23 | |
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24 | #include "port_before.h" |
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25 | |
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26 | #include <rtems/bsd/sys/types.h> |
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27 | #include <rtems/bsd/sys/param.h> |
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28 | #include <sys/socket.h> |
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29 | |
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30 | #include <netinet/in.h> |
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31 | #include <arpa/inet.h> |
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32 | #include <arpa/nameser.h> |
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33 | |
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34 | #include <ctype.h> |
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35 | #include <resolv.h> |
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36 | #include <resolv_mt.h> |
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37 | |
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38 | #include "port_after.h" |
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39 | |
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40 | static char |
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41 | xtob(int c) { |
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42 | return (c - (((c >= '0') && (c <= '9')) ? '0' : '7')); |
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43 | } |
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44 | |
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45 | u_int |
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46 | inet_nsap_addr(const char *ascii, u_char *binary, int maxlen) { |
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47 | u_char c, nib; |
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48 | u_int len = 0; |
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49 | |
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50 | if (ascii[0] != '0' || (ascii[1] != 'x' && ascii[1] != 'X')) |
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51 | return (0); |
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52 | ascii += 2; |
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53 | |
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54 | while ((c = *ascii++) != '\0' && len < (u_int)maxlen) { |
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55 | if (c == '.' || c == '+' || c == '/') |
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56 | continue; |
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57 | if (!isascii(c)) |
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58 | return (0); |
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59 | if (islower(c)) |
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60 | c = toupper(c); |
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61 | if (isxdigit(c)) { |
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62 | nib = xtob(c); |
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63 | c = *ascii++; |
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64 | if (c != '\0') { |
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65 | c = toupper(c); |
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66 | if (isxdigit(c)) { |
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67 | *binary++ = (nib << 4) | xtob(c); |
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68 | len++; |
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69 | } else |
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70 | return (0); |
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71 | } |
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72 | else |
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73 | return (0); |
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74 | } |
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75 | else |
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76 | return (0); |
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77 | } |
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78 | return (len); |
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79 | } |
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80 | |
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81 | char * |
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82 | inet_nsap_ntoa(int binlen, const u_char *binary, char *ascii) { |
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83 | int nib; |
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84 | int i; |
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85 | char *tmpbuf = inet_nsap_ntoa_tmpbuf; |
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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 | *ascii++ = '0'; |
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96 | *ascii++ = 'x'; |
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97 | |
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98 | if (binlen > 255) |
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99 | binlen = 255; |
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100 | |
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101 | for (i = 0; i < binlen; i++) { |
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102 | nib = *binary >> 4; |
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103 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
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104 | nib = *binary++ & 0x0f; |
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105 | *ascii++ = nib + (nib < 10 ? '0' : '7'); |
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106 | if (((i % 2) == 0 && (i + 1) < binlen)) |
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107 | *ascii++ = '.'; |
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108 | } |
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109 | *ascii = '\0'; |
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110 | return (start); |
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111 | } |
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112 | |
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113 | /* |
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114 | * Weak aliases for applications that use certain private entry points, |
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115 | * and fail to include <arpa/inet.h>. |
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116 | */ |
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117 | #undef inet_nsap_addr |
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118 | __weak_reference(__inet_nsap_addr, inet_nsap_addr); |
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119 | #undef inet_nsap_ntoa |
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120 | __weak_reference(__inet_nsap_ntoa, inet_nsap_ntoa); |
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121 | |
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122 | /*! \file */ |
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