1 //==========================================================================
5 // Stand-alone IP address parsing for RedBoot
7 //==========================================================================
8 //####ECOSGPLCOPYRIGHTBEGIN####
9 // -------------------------------------------
10 // This file is part of eCos, the Embedded Configurable Operating System.
11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
13 // eCos is free software; you can redistribute it and/or modify it under
14 // the terms of the GNU General Public License as published by the Free
15 // Software Foundation; either version 2 or (at your option) any later version.
17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
22 // You should have received a copy of the GNU General Public License along
23 // with eCos; if not, write to the Free Software Foundation, Inc.,
24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
26 // As a special exception, if other files instantiate templates or use macros
27 // or inline functions from this file, or you compile this file and link it
28 // with other works to produce a work based on this file, this file does not
29 // by itself cause the resulting work to be covered by the GNU General Public
30 // License. However the source code for this file must still be made available
31 // in accordance with section (3) of the GNU General Public License.
33 // This exception does not invalidate any other reasons why a work based on
34 // this file might be covered by the GNU General Public License.
36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
37 // at http://sources.redhat.com/ecos/ecos-license/
38 // -------------------------------------------
39 //####ECOSGPLCOPYRIGHTEND####
40 //==========================================================================
41 //#####DESCRIPTIONBEGIN####
44 // Contributors: gthomas
49 // This code is part of RedBoot (tm).
51 //####DESCRIPTIONEND####
53 //==========================================================================
59 inet_aton(const char *s, in_addr_t *addr)
61 int i, val, radix, digit;
62 unsigned long res = 0;
66 for (i = 0; i < 4; i++) {
67 // Parse next digit string
71 while ((c = *s++) != '\0') {
72 if (first && (c == '0') && (_tolower(*s) == 'x')) {
78 if (_is_hex(c) && ((digit = _from_hex(c)) < radix)) {
80 val = (val * radix) + digit;
81 } else if (c == '.' && i < 3) { // all but last terminate by '.'
88 #ifdef __LITTLE_ENDIAN__
89 res |= val << ((3-i)*8); // 24, 16, 8, 0
91 res = (res << 8) | val;
94 if (0 == i) { // first field found end of string
95 res = val; // no shifting, use it as the whole thing
96 break; // permit entering a single number
98 if (3 > i) // we found end of string before getting 4 fields
101 // after that we check that it was 0..255 only
102 if (val &~0xff) return false;
104 addr->s_addr = htonl(res);
108 // Assumes address is in network byte order
110 inet_ntoa(in_addr_t *addr)
115 ap = (unsigned char *)addr;
116 diag_sprintf(str, "%d.%d.%d.%d", ap[0], ap[1], ap[2], ap[3]);