80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
#include "Unescape.h"
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#include "Utility.h"
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#include <stdlib.h>
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#include <string.h>
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char *unescape_search_url(const char *input) {
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if (!input) return NULL;
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const char *key = NULL;
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const char *start = NULL;
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const char *end = NULL;
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size_t len = 0;
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if (strstr(input, "uddg=")) {
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key = "uddg=";
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start = strstr(input, key);
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if (!start) return NULL;
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start += strlen(key);
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end = strchr(start, '&');
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len = end ? (size_t)(end - start) : strlen(start);
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}
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else if (strstr(input, "RU=")) {
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key = "RU=";
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start = strstr(input, key);
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if (!start) return strdup(input);
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start += strlen(key);
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end = strchr(start, '/');
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len = end ? (size_t)(end - start) : strlen(start);
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}
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else {
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return strdup(input);
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}
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char *output = (char *)malloc(len * 3 + 1);
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if (!output) return NULL;
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size_t i = 0, j = 0;
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while (i < len) {
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if (start[i] == '%' && i + 2 < len) {
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int high = hex_to_int(start[i + 1]);
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int low = hex_to_int(start[i + 2]);
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if (high != -1 && low != -1) {
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output[j++] = (char)((high << 4) | low);
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i += 3;
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} else {
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output[j++] = start[i++];
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}
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} else if (start[i] == '+') {
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output[j++] = ' ';
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i++;
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} else {
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output[j++] = start[i++];
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}
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}
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output[j] = '\0';
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return output;
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}
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char *url_decode_query(const char *src) {
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if (!src) return NULL;
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char *res = strdup(src);
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char *p = res;
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while (*src) {
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if (*src == '+') {
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*p++ = ' ';
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} else if (*src == '%' && src[1] && src[2]) {
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char hex[3] = {src[1], src[2], '\0'};
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*p++ = (char)strtol(hex, NULL, 16);
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src += 2;
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} else {
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*p++ = *src;
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}
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src++;
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}
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*p = '\0';
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return res;
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}
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