base/libs/qdecoder/qEncode.c

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/*
 * Copyright 2008 The qDecoder Project. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE QDECODER PROJECT ``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 QDECODER PROJECT 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.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "md5/md5_global.h"
#include "md5/md5.h"
#include "qDecoder.h"
#include "qInternal.h"

Q_ENTRY *qDecodeQueryString(Q_ENTRY *entry, const char *query, char equalchar, char sepchar, int *count) {
    if(entry == NULL) {
        entry = qEntryInit();
        if(entry == NULL) return NULL;
    }

    char *newquery = NULL;
    int cnt = 0;

    if(query != NULL) newquery = strdup(query);
    while (newquery && *newquery) {
        char *value = _q_makeword(newquery, sepchar);
        char *name = qStrTrim(_q_makeword(value, equalchar));
        qDecodeUrl(name);
        qDecodeUrl(value);

        if(qEntryPutStr(entry, name, value, false) == true) cnt++;
        free(name);
        free(value);
    }
    if(newquery != NULL) free(newquery);
    if(count != NULL) *count = cnt;

    return entry;
}

char *qEncodeUrl(const char *str) {
    char *encstr, buf[2+1];
    unsigned char c;
    int i, j;

    if (str == NULL) return NULL;
    if ((encstr = (char *)malloc((strlen(str) * 3) + 1)) == NULL) return NULL;

    for (i = j = 0; str[i]; i++) {
        c = (unsigned char)str[i];
        if ((c >= '0') && (c <= '9')) encstr[j++] = c;
        else if ((c >= 'A') && (c <= 'Z')) encstr[j++] = c;
        else if ((c >= 'a') && (c <= 'z')) encstr[j++] = c;
        else if ((c == '@') || (c == '.') || (c == '/') || (c == '\\')
                 || (c == '-') || (c == '_') || (c == ':') ) encstr[j++] = c;
        else {
            sprintf(buf, "%02x", c);
            encstr[j++] = '%';
            encstr[j++] = buf[0];
            encstr[j++] = buf[1];
        }
    }
    encstr[j] = '\0';

    return encstr;
}

char *qDecodeUrl(char *str) {
    int i, j;

    if (!str) return NULL;
    for (i = j = 0; str[j]; i++, j++) {
        switch (str[j]) {
            case '+': {
                str[i] = ' ';
                break;
            }
            case '%': {
                str[i] = _q_x2c(str[j + 1], str[j + 2]);
                j += 2;
                break;
            }
            default: {
                str[i] = str[j];
                break;
            }
        }
    }
    str[i] = '\0';

    return str;
}

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