support.cc

/*
 * Copyright (c) 2001 - 2003
 *      Sebastian Majewski. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Sebastian Majewski
 *      and his contributors.
 * 4. Neither the name of Sebastian Majewski nor the names of his contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 REGENTS OR CONTRIBUTORS 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.
 */


#ifdef OS_AIX
    #include <memory.h>
#endif

#ifdef OS_OPENBSD
    #include <memory.h>
#endif

#ifdef OS_LINUX
    #include <string.h>
#endif


#include <sys/types.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdarg.h>
#include <stdio.h>
#include <unistd.h>

#include <netz.h>

#include "support.h"


c_string::c_string()
{
    data = 0;
    len = 0;
}


c_string::c_string(const c_string& cstr)
{
    u_int str_len = cstr.get_len();

    data = new string[str_len];

    memcpy(data, cstr.get_data(), str_len);

    len = str_len;
}


c_string::c_string(string* format, ...)
{
    string str[C_STRING_LEN];

    va_list varg;

    va_start(varg, format);
     
    u_int str_len = vsnprintf(str, C_STRING_LEN, format, varg);

    data = new string[str_len];

    memcpy(data, str, str_len);

    len = str_len;
}


c_string::~c_string()
{
    if(data)
    {
        delete data;
	data = 0;
	len = 0;
    }
}


void c_string::clear()
{
    if(data)
    {
        delete data;
	data = 0;
        len = 0;
    }
}


u_int c_string::add(const c_string& cstr)
{
    u_int str_len = cstr.get_len();

    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, cstr.get_data(), str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return str_len;
}


u_int c_string::add_raw(byte* str, u_int str_len)
{
    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, str, str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return str_len;
}


u_int c_string::add_bin(byte value)
{ 
    string str[] = "%u%u%u%u%u%u%u%u";

    return add_bin(str, value); 
}


u_int c_string::add_bin(string* str, byte value)
{
    return add(str,
        bits(value, 0x80),
        bits(value, 0x40),
        bits(value, 0x20),
        bits(value, 0x10),
        bits(value, 0x08),
        bits(value, 0x04),
        bits(value, 0x02),
        bits(value, 0x01));
}


u_int c_string::add_bin(word value)
{
    string str[] = "%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u";

    return add_bin(str, value);
}


u_int c_string::add_bin(string* str, word value)
{
    return add(str,
        bits(value, 0x8000),
        bits(value, 0x4000),
        bits(value, 0x2000),
        bits(value, 0x1000),
        bits(value, 0x0800),
        bits(value, 0x0400),
        bits(value, 0x0200),
        bits(value, 0x0100),
        bits(value, 0x0080),
        bits(value, 0x0040),
        bits(value, 0x0020),
        bits(value, 0x0010),
        bits(value, 0x0008),
        bits(value, 0x0004),
        bits(value, 0x0002),
        bits(value, 0x0001));
}


u_int c_string::add_bin(dword value)
{
    string str[] = "%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u"
        "%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u%u";

    return add_bin(str, value);
}


u_int c_string::add_bin(string* str, dword value)
{
    return add(str,
        bits(value, 0x80000000),
        bits(value, 0x40000000),
        bits(value, 0x20000000),
        bits(value, 0x10000000),
        bits(value, 0x08000000),
        bits(value, 0x04000000),
        bits(value, 0x02000000),
        bits(value, 0x01000000),
        bits(value, 0x00800000),
        bits(value, 0x00400000),
        bits(value, 0x00200000),
        bits(value, 0x00100000),
        bits(value, 0x00080000),
        bits(value, 0x00040000),
        bits(value, 0x00020000),
        bits(value, 0x00010000),
        bits(value, 0x00008000),
        bits(value, 0x00004000),
        bits(value, 0x00002000),
        bits(value, 0x00001000),
        bits(value, 0x00000800),
        bits(value, 0x00000400),
        bits(value, 0x00000200),
        bits(value, 0x00000100),
        bits(value, 0x00000080),
        bits(value, 0x00000040),
        bits(value, 0x00000020),
        bits(value, 0x00000010),
        bits(value, 0x00000008),
        bits(value, 0x00000004),
        bits(value, 0x00000002),
        bits(value, 0x00000001));
}


u_int c_string::add_hex(byte value)
{
    string str[] = "0x%02X";

    return add_bin(str, value);
}


u_int c_string::add_hex(string* str, byte value)
{
    return add(str, value);
}


u_int c_string::add_hex(word value)
{
    string str[] = "0x%02X%02X";

    return add_bin(str, value);
}


u_int c_string::add_hex(string* str, word value)
{
    return add(str,
        bits(value, 0xFF00),
        bits(value, 0x00FF));
}


u_int c_string::add_hex(dword value)
{
    string str[] = "0x%02X%02X%02X%02X";

    return add_bin(str, value);
}


u_int c_string::add_hex(string* str, dword value)
{
    return add(str,
        bits(value, 0xFF000000),
        bits(value, 0x00FF0000),
        bits(value, 0x0000FF00),
        bits(value, 0x000000FF));
}


u_int c_string::add(char c)
{

    string* tmp_data = data;
    
    data = new string[len + 1];
 
    memcpy(data, tmp_data, len);
    *(data + len) = c;

    len += 1;
      
    if(data)
    {
        delete tmp_data;
    }

    return len + 1;
}


u_int c_string::add(string* format, ...)
{
    string str[C_STRING_LEN];

    va_list varg;

    va_start(varg, format);
    
    u_int str_len = vsnprintf(str, C_STRING_LEN, format, varg);

    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, str, str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return str_len;
}


string* c_string::get_data() const
{
    return data;
}

u_int c_string::get_len() const
{
    return len;
}


c_string &c_string::operator=(const c_string& cstr)
{
    u_int str_len = cstr.get_len();

    if(data)
    {
        delete data;
    }

    data = new string[str_len];

    memcpy(data, cstr.get_data(), str_len);

    len = str_len;

    return *this;
}


c_string &c_string::operator=(const string* str)
{
    u_int str_len = strlen(str);

    if(data)
    {
        delete data;
    }

    data = new string[str_len];

    memcpy(data, str, str_len);

    len = str_len;

    return *this;
}


c_string &c_string::operator+=(const c_string& cstr)
{
    u_int str_len = cstr.get_len();
 
    string* tmp_data = data; 
 
    data = new string[len + str_len];
 
    memcpy(data, tmp_data, len);
    memcpy(data + len, cstr.get_data(), str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return *this;
}


c_string &c_string::operator+=(const string* str)
{
    u_int str_len = strlen(str);

    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, str, str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return *this;
}


c_string &c_string::operator<<(const c_string& cstr)
{
    u_int str_len = cstr.get_len();

    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, cstr.get_data(), str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return *this;
}


c_string &c_string::operator<<(const string* str)
{
    u_int str_len = strlen(str);

    string* tmp_data = data;

    data = new string[len + str_len];

    memcpy(data, tmp_data, len);
    memcpy(data + len, str, str_len);

    len += str_len;

    if(data)
    {
        delete tmp_data;
    }

    return *this;
}


bool c_string::operator==(const c_string& cstr)
{
    if(cstr.get_len() != len)
    {
        return false;
    }

    for(u_int i = 0; i < len; i++)
    {
        if(cstr.get_data()[i] != data[i])
        {
            return false;
        }
    }
 
    return true;
}


bool c_string::operator==(const string* str)
{
    if(strlen(str) != len)
    {
        return false;
    }
 
    for(u_int i = 0; i < len; i++)
    {
        if(str[i] != data[i])
        {
            return false;
        }
    }
  
    return true;
}


c_string print_line()
{
    return c_string((char*)"----------------------------------------"
        "---------------------------------------\n");
}


c_string print_options_string(c_string opt_cstr)
{
    c_string output_string;

    string options_string[512];

    for(int i = 0; i < 512; i++)
    {
        options_string[i] = 0;
    }

    memcpy(options_string, opt_cstr.get_data(), opt_cstr.get_len());

    u_int cursor_pos = 13;
    u_int options_string_pos = 0;
    u_int last_break_pos = 0;

    output_string.add((char*)"\n\tOPTS ");

    while(options_string[options_string_pos])
    {
        if(options_string[options_string_pos] == ']')
        {
            options_string[options_string_pos] = 0;

            if(cursor_pos + options_string_pos - last_break_pos + 1 > 79)
            {
                output_string.add((char*)"\n\t    ");
                cursor_pos = 13;
            }

            output_string.add((char*)"%s]", options_string + last_break_pos);
            cursor_pos += options_string_pos - last_break_pos + 1;
            last_break_pos = options_string_pos + 1;
        }


        if(options_string[options_string_pos] == ',')
        {
            options_string[options_string_pos] = 0;

            if(cursor_pos + options_string_pos - last_break_pos + 1 > 79)
            {
                output_string.add((char*)"\n\t    ");
                cursor_pos = 13;
            }

            output_string.add((char*)"%s,", options_string + last_break_pos);
            cursor_pos += options_string_pos - last_break_pos + 1;
            last_break_pos = options_string_pos + 1;
        }


        if(options_string[options_string_pos] == '}')
        {
            if(options_string[options_string_pos + 1] != ']')
            {
                options_string[options_string_pos] = 0;

                if(cursor_pos + options_string_pos - last_break_pos + 1 > 79)
                {
                    output_string.add((char*)"\n\t    ");
                    cursor_pos = 13;
                }
            
                output_string.add((char*)"%s}", options_string + last_break_pos);
                cursor_pos += options_string_pos - last_break_pos + 1;
                last_break_pos = options_string_pos + 1;
            }
        }
        
        options_string_pos++;
    }

    output_string.add((char*)"%s", options_string + last_break_pos);

    return output_string;
}


char* argvncpy(char* str, char** argv, u_int max_len)
{

        char** p;
        u_int len = 0;
        char* src;
        char* dst = str;

        p = argv;
        if (*p == 0)
                return str;

        while (*p && max_len--)
                len += strlen(*p++) + 1;

        p = argv;

        while ((src = *p++) != NULL) {
                while ((*dst++ = *src++) != '\0')
                        ;
                dst[-1] = ' ';
        }
        dst[-1] = '\0';

        return str;
}