/*
 * LibHTP (http://www.libhtp.org)
 * Copyright 2009,2010 Ivan Ristic <ivanr@webkreator.com>
 *
 * LibHTP is an open source product, released under terms of the General Public Licence
 * version 2 (GPLv2). Please refer to the file LICENSE, which contains the complete text
 * of the license.
 *
 * In addition, there is a special exception that allows LibHTP to be freely
 * used with any OSI-approved open source licence. Please refer to the file
 * LIBHTP_LICENSING_EXCEPTION for the full text of the exception.
 *
 */

#include "htp.h"

#if 0

/**
 *
 */
int htp_header_parse_internal_strict(unsigned char *data, size_t len, htp_header_t *h) {
    size_t name_start, name_end;
    size_t value_start, value_end;

    // Deal with the name first
    name_start = name_end = 0;

    // Find where the header name ends
    while (name_end < len) {
        if (htp_is_lws(data[name_end]) || data[name_end] == ':') break;
        name_end++;
    }

    if (name_end == 0) {
        // Empty header name
        return -1;
    }

    if (name_end == len) {
        // TODO
        return -1;
    }

    // Is there any LWS before colon?
    size_t pos = name_end;
    while (pos < len) {
        if (!htp_is_lws(data[pos])) break;
        pos++;
        // TODO
        // return -1;
    }

    if (pos == len) {
        // TODO
        return -1;
    }

    // The next character must be a colon
    if (data[pos] != ':') {
        // TODO
        return -1;
    }

    // Move over the colon
    pos++;

    // Again, ignore any LWS
    while (pos < len) {
        if (!htp_is_lws(data[pos])) break;
        pos++;
    }

    if (pos == len) {
        // TODO
        return -1;
    }

    value_start = value_end = pos;

    while (value_end < len) {
        if (htp_is_lws(data[value_end])) break;
        value_end++;
    }

    h->name_offset = name_start;
    h->name_len = name_end - name_start;
    h->value_offset = value_start;
    h->value_len = value_end - value_start;

    return 1;
}
 */

/**
 *
 */
htp_header_t *htp_connp_header_parse(htp_connp_t *reqp, unsigned char *data, size_t len) {
    htp_header_t *h = calloc(1, sizeof (htp_header_t));
    if (h == NULL) return NULL;

    // Parse the header line    
    if (reqp->impl_header_parse(data, len, h) < 0) {
        // Invalid header line
        h->is_parsed = 0;
        h->name = bstr_memdup(data, len);

        return h;
    }

    // Now extract the name and the value
    h->name = bstr_memdup(data + h->name_offset, h->name_len);
    h->value = bstr_memdup(data + h->value_offset, h->value_len);
    h->is_parsed = 1;

    // Because header names are case-insensitive, we will convert
    // the name to lowercase to use it as a lookup key.
    h->name_lowercase = bstr_tolowercase(h->name);

    return h;
}

#endif