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Diffstat (limited to 'nuttx/libc/net/lib_inetaddr.c')
-rw-r--r-- | nuttx/libc/net/lib_inetaddr.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/nuttx/libc/net/lib_inetaddr.c b/nuttx/libc/net/lib_inetaddr.c new file mode 100644 index 000000000..48b01d682 --- /dev/null +++ b/nuttx/libc/net/lib_inetaddr.c @@ -0,0 +1,74 @@ +/**************************************************************************** + * lib/net/lib_inetaddr.c + * + * Copyright (C) 2011 Yu Qiang. All rights reserved. + * Author: Yu Qiang <yuq825@gmail.com> + * + * This file is a part of NuttX: + * + * Copyright (C) 2011 Gregory Nutt. 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. + * 3. Neither the name NuttX 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 COPYRIGHT HOLDERS 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 + * COPYRIGHT OWNER 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdio.h> +#include <arpa/inet.h> + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * name inet_addr + * + * Description: + * The inet_addr() function converts the string pointed to by cp, in the + * standard IPv4 dotted decimal notation, to an integer value suitable for + * use as an Internet address. + + ****************************************************************************/ + +in_addr_t inet_addr(FAR const char *cp) +{ + unsigned int a, b, c, d; + uint32_t result; + + sscanf(cp, "%u.%u.%u.%u", &a, &b, &c, &d); + result = a << 8; + result |= b; + result <<= 8; + result |= c; + result <<= 8; + result |= d; + return HTONL(result); +} |