150 lines
4.4 KiB
C
Executable File
150 lines
4.4 KiB
C
Executable File
/*
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* Copyright (c) 2014, Tuan PM
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* Email: tuanpm@live.com
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <math.h>
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#include <stddef.h>
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#include "utils.h"
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uint8_t ICACHE_FLASH_ATTR UTILS_IsIPV4 (int8_t *str)
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{
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uint8_t segs = 0; /* Segment count. */
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uint8_t chcnt = 0; /* Character count within segment. */
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uint8_t accum = 0; /* Accumulator for segment. */
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/* Catch NULL pointer. */
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if (str == 0)
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return 0;
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/* Process every character in string. */
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while (*str != '\0') {
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/* Segment changeover. */
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if (*str == '.') {
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/* Must have some digits in segment. */
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if (chcnt == 0)
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return 0;
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/* Limit number of segments. */
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if (++segs == 4)
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return 0;
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/* Reset segment values and restart loop. */
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chcnt = accum = 0;
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str++;
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continue;
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}
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/* Check numeric. */
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if ((*str < '0') || (*str > '9'))
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return 0;
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/* Accumulate and check segment. */
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if ((accum = accum * 10 + *str - '0') > 255)
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return 0;
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/* Advance other segment specific stuff and continue loop. */
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chcnt++;
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str++;
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}
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/* Check enough segments and enough characters in last segment. */
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if (segs != 3)
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return 0;
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if (chcnt == 0)
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return 0;
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/* Address okay. */
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return 1;
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}
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uint8_t ICACHE_FLASH_ATTR UTILS_StrToIP(const int8_t* str, void *ip)
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{
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/* The count of the number of bytes processed. */
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int i;
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/* A pointer to the next digit to process. */
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const char * start;
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start = str;
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for (i = 0; i < 4; i++) {
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/* The digit being processed. */
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char c;
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/* The value of this byte. */
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int n = 0;
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while (1) {
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c = * start;
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start++;
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if (c >= '0' && c <= '9') {
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n *= 10;
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n += c - '0';
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}
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/* We insist on stopping at "." if we are still parsing
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the first, second, or third numbers. If we have reached
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the end of the numbers, we will allow any character. */
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else if ((i < 3 && c == '.') || i == 3) {
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break;
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}
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else {
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return 0;
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}
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}
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if (n >= 256) {
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return 0;
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}
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((uint8_t*)ip)[i] = n;
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}
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return 1;
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}
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uint32_t ICACHE_FLASH_ATTR UTILS_Atoh(const int8_t *s)
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{
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uint32_t value = 0, digit;
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int8_t c;
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while((c = *s++)){
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if('0' <= c && c <= '9')
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digit = c - '0';
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else if('A' <= c && c <= 'F')
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digit = c - 'A' + 10;
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else if('a' <= c && c<= 'f')
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digit = c - 'a' + 10;
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else break;
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value = (value << 4) | digit;
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}
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return value;
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}
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