diff options
Diffstat (limited to 'REORG.TODO/resolv/inet_addr.c')
-rw-r--r-- | REORG.TODO/resolv/inet_addr.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/REORG.TODO/resolv/inet_addr.c b/REORG.TODO/resolv/inet_addr.c new file mode 100644 index 0000000000..022f7ea084 --- /dev/null +++ b/REORG.TODO/resolv/inet_addr.c @@ -0,0 +1,183 @@ +/* + * Copyright (c) 1983, 1990, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Portions Copyright (c) 1993 by Digital Equipment Corporation. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies, and that + * the name of Digital Equipment Corporation not be used in advertising or + * publicity pertaining to distribution of the document or software without + * specific, written prior permission. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL + * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT + * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * Portions Copyright (c) 1996-1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#include <sys/types.h> +#include <sys/param.h> + +#include <netinet/in.h> +#include <arpa/inet.h> + +#include <ctype.h> + +#include <endian.h> +#include <stdint.h> +#include <stdlib.h> +#include <limits.h> +#include <errno.h> + +/* + * Ascii internet address interpretation routine. + * The value returned is in network order. + */ +in_addr_t +__inet_addr(const char *cp) { + struct in_addr val; + + if (__inet_aton(cp, &val)) + return (val.s_addr); + return (INADDR_NONE); +} +weak_alias (__inet_addr, inet_addr) + +/* + * Check whether "cp" is a valid ascii representation + * of an Internet address and convert to a binary address. + * Returns 1 if the address is valid, 0 if not. + * This replaces inet_addr, the return value from which + * cannot distinguish between failure and a local broadcast address. + */ +int +__inet_aton(const char *cp, struct in_addr *addr) +{ + static const in_addr_t max[4] = { 0xffffffff, 0xffffff, 0xffff, 0xff }; + in_addr_t val; + char c; + union iaddr { + uint8_t bytes[4]; + uint32_t word; + } res; + uint8_t *pp = res.bytes; + int digit; + + int saved_errno = errno; + __set_errno (0); + + res.word = 0; + + c = *cp; + for (;;) { + /* + * Collect number up to ``.''. + * Values are specified as for C: + * 0x=hex, 0=octal, isdigit=decimal. + */ + if (!isdigit(c)) + goto ret_0; + { + char *endp; + unsigned long ul = strtoul (cp, (char **) &endp, 0); + if (ul == ULONG_MAX && errno == ERANGE) + goto ret_0; + if (ul > 0xfffffffful) + goto ret_0; + val = ul; + digit = cp != endp; + cp = endp; + } + c = *cp; + if (c == '.') { + /* + * Internet format: + * a.b.c.d + * a.b.c (with c treated as 16 bits) + * a.b (with b treated as 24 bits) + */ + if (pp > res.bytes + 2 || val > 0xff) + goto ret_0; + *pp++ = val; + c = *++cp; + } else + break; + } + /* + * Check for trailing characters. + */ + if (c != '\0' && (!isascii(c) || !isspace(c))) + goto ret_0; + /* + * Did we get a valid digit? + */ + if (!digit) + goto ret_0; + + /* Check whether the last part is in its limits depending on + the number of parts in total. */ + if (val > max[pp - res.bytes]) + goto ret_0; + + if (addr != NULL) + addr->s_addr = res.word | htonl (val); + + __set_errno (saved_errno); + return (1); + +ret_0: + __set_errno (saved_errno); + return (0); +} +weak_alias (__inet_aton, inet_aton) +libc_hidden_def (__inet_aton) +libc_hidden_weak (inet_aton) |