74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
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/*
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* rest-util.c
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*
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* Created on: Oct 26, 2010
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* Author: dogan
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*/
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#include <stddef.h> /*for size_t*/
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#include <ctype.h> /*for isxdigit*/
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#include <string.h>
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/*Copied from mangoose http server*/
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size_t
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decode(const char *src, size_t srclen, char *dst, size_t dstlen, int is_form)
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{
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size_t i, j;
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int a, b;
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#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W')
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for (i = j = 0; i < srclen && j < dstlen - 1; i++, j++) {
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if (src[i] == '%' &&
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isxdigit(* (unsigned char *) (src + i + 1)) &&
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isxdigit(* (unsigned char *) (src + i + 2))) {
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a = tolower(* (unsigned char *) (src + i + 1));
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b = tolower(* (unsigned char *) (src + i + 2));
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dst[j] = ((HEXTOI(a) << 4) | HEXTOI(b)) & 0xff;
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i += 2;
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} else if (is_form && src[i] == '+') {
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dst[j] = ' ';
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} else {
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dst[j] = src[i];
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}
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}
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dst[j] = '\0'; /* Null-terminate the destination */
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return ( i == srclen );
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}
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/*Copied from mangoose http server*/
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int
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get_variable(const char *name, const char *buffer, size_t buflen, char* output, size_t output_len, int decode_type)
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{
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const char *start = NULL, *end = NULL, *end_of_value;
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size_t var_len = 0;
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/*initialize the output buffer first*/
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*output = 0;
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var_len = strlen(name);
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end = buffer + buflen;
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for (start = buffer; start + var_len < end; start++)
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{
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if ((start == buffer || start[-1] == '&') && start[var_len] == '=' &&
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! strncmp(name, start, var_len))
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{
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/* Point p to variable value */
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start += var_len + 1;
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/* Point s to the end of the value */
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end_of_value = (const char *) memchr(start, '&', end - start);
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if (end_of_value == NULL)
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{
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end_of_value = end;
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}
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return decode(start, end_of_value - start, output, output_len, decode_type);
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}
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}
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return 0;
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}
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