lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1983, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * 3. All advertising materials mentioning features or use of this software |
| 15 | * must display the following acknowledgement: |
| 16 | * This product includes software developed by the University of |
| 17 | * California, Berkeley and its contributors. |
| 18 | * 4. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | */ |
| 34 | |
| 35 | #define __FORCE_GLIBC |
| 36 | #include <features.h> |
| 37 | #include <ctype.h> |
| 38 | #include <netinet/in.h> |
| 39 | #include <arpa/inet.h> |
| 40 | |
| 41 | /* |
| 42 | * Internet network address interpretation routine. |
| 43 | * The library routines call this routine to interpret |
| 44 | * network numbers. |
| 45 | */ |
| 46 | in_addr_t |
| 47 | inet_network(const char *cp) |
| 48 | { |
| 49 | u_char c; |
| 50 | int got_data; |
| 51 | u_int base, dots; |
| 52 | in_addr_t res, val; |
| 53 | |
| 54 | res = 0; |
| 55 | dots = 0; |
| 56 | again: |
| 57 | val = 0; |
| 58 | got_data = 0; |
| 59 | if (*cp == '0') { |
| 60 | cp++; |
| 61 | if (*cp == 'x' || *cp == 'X') { |
| 62 | cp++; |
| 63 | base = 16; |
| 64 | } else { |
| 65 | base = 8; |
| 66 | got_data = 1; |
| 67 | } |
| 68 | } else |
| 69 | base = 10; |
| 70 | while ((c = *cp) != '\0') { |
| 71 | if (isdigit(c)) { |
| 72 | if (base == 8 && c > '7') |
| 73 | return (INADDR_NONE); |
| 74 | val = val * base + c - '0'; |
| 75 | } else if (base == 16 && isxdigit(c)) |
| 76 | val = (val << 4) + 10 - (islower(c) ? 'a' : 'A'); |
| 77 | else |
| 78 | break; |
| 79 | if (val > 0xff) |
| 80 | return (INADDR_NONE); |
| 81 | cp++; |
| 82 | got_data = 1; |
| 83 | } |
| 84 | if (!got_data) |
| 85 | return (INADDR_NONE); |
| 86 | if (dots != 0) |
| 87 | res <<= 8; |
| 88 | res |= val; |
| 89 | if (c == '.') { |
| 90 | if (++dots == 4) |
| 91 | return (INADDR_NONE); |
| 92 | cp++; |
| 93 | goto again; |
| 94 | } |
| 95 | if (c != '\0') |
| 96 | return (INADDR_NONE); |
| 97 | return (res); |
| 98 | } |
| 99 | libc_hidden_def(inet_network) |