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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [redboot/] [v2_0/] [src/] [net/] [inet_addr.c] - Rev 256
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//========================================================================== // // net/inet_addr.c // // Stand-alone IP address parsing for RedBoot // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later version. // // eCos is distributed in the hope that it will be useful, but WITHOUT ANY // WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): gthomas // Contributors: gthomas // Date: 2000-07-14 // Purpose: // Description: // // This code is part of RedBoot (tm). // //####DESCRIPTIONEND#### // //========================================================================== #include <redboot.h> #include <net/net.h> bool inet_aton(const char *s, in_addr_t *addr) { int i, val, radix, digit; unsigned long res = 0; bool first; char c; for (i = 0; i < 4; i++) { // Parse next digit string first = true; val = 0; radix = 10; while ((c = *s++) != '\0') { if (first && (c == '0') && (_tolower(*s) == 'x')) { radix = 16; s++; // Skip over 0x c = *s++; } first = false; if (_is_hex(c) && ((digit = _from_hex(c)) < radix)) { // Valid digit val = (val * radix) + digit; } else if (c == '.' && i < 3) { // all but last terminate by '.' break; } else { return false; } } // merge result #ifdef __LITTLE_ENDIAN__ res |= val << ((3-i)*8); // 24, 16, 8, 0 #else res = (res << 8) | val; #endif if ('\0' == c) { if (0 == i) { // first field found end of string res = val; // no shifting, use it as the whole thing break; // permit entering a single number } if (3 > i) // we found end of string before getting 4 fields return false; } // after that we check that it was 0..255 only if (val &~0xff) return false; } addr->s_addr = htonl(res); return true; } // Assumes address is in network byte order char * inet_ntoa(in_addr_t *addr) { static char str[32]; unsigned char *ap; ap = (unsigned char *)addr; diag_sprintf(str, "%d.%d.%d.%d", ap[0], ap[1], ap[2], ap[3]); return str; }
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