static void
set_bitfield (char *f, bitfield *array, int value,
unsigned int size, int lineno)
{
unsigned int i;
if (strcmp (f, "CpuFP") == 0)
{
set_bitfield("Cpu387", array, value, size, lineno);
set_bitfield("Cpu287", array, value, size, lineno);
f = "Cpu8087";
}
else if (strcmp (f, "Mmword") == 0)
f= "Qword";
else if (strcmp (f, "Oword") == 0)
f= "Xmmword";
for (i = 0; i < size; i++)
if (strcasecmp (array[i].name, f) == 0)
{
array[i].value = value;
return;
}
if (value)
{
const char *v = strchr (f, '=');
if (v)
{
size_t n = v - f;
char *end;
for (i = 0; i < size; i++)
if (strncasecmp (array[i].name, f, n) == 0)
{
value = strtol (v + 1, &end, 0);
if (*end == '\0')
{
array[i].value = value;
return;
}
break;
}
}
}
/* Handle CPU_XXX_FLAGS. */
if (!set_bitfield_from_cpu_flag_init (f, array, value, size, lineno))
return;
if (lineno != -1)
fail (_("%s: %d: Unknown bitfield: %s\n"), filename, lineno, f);
else
fail (_("Unknown bitfield: %s\n"), f);
}
static void
process_i386_cpu_flag (FILE *table, char *flag, int macro,
const char *comma, const char *indent)
{
char *str, *next, *last;
bitfield flags [ARRAY_SIZE (cpu_flags)];
/* Copy the default cpu flags. */
memcpy (flags, cpu_flags, sizeof (cpu_flags));
if (strcasecmp (flag, "unknown") == 0)
{
unsigned int i;
/* We turn on everything except for cpu64 in case of
CPU_UNKNOWN_FLAGS. */
for (i = 0; i < ARRAY_SIZE (flags); i++)
if (flags[i].position != Cpu64)
flags[i].value = 1;
}
else if (strcmp (flag, "0"))
{
last = flag + strlen (flag);
for (next = flag; next && next < last; )
{
str = next_field (next, '|', &next);
if (str)
set_bitfield (str, flags, ARRAY_SIZE (flags));
}
}
output_cpu_flags (table, flags, ARRAY_SIZE (flags), macro,
comma, indent);
}
static int
set_bitfield_from_cpu_flag_init (char *f, bitfield *array,
int value, unsigned int size,
int lineno)
{
char *str, *next, *last;
unsigned int i;
for (i = 0; i < ARRAY_SIZE (cpu_flag_init); i++)
if (strcmp (cpu_flag_init[i].name, f) == 0)
{
/* Turn on selective bits. */
char *init = xstrdup (cpu_flag_init[i].init);
last = init + strlen (init);
for (next = init; next && next < last; )
{
str = next_field (next, '|', &next, last);
if (str)
set_bitfield (str, array, 1, size, lineno);
}
free (init);
return 0;
}
return -1;
}
static void
process_i386_opcode_modifier (FILE *table, char *mod)
{
char *str, *next, *last;
bitfield modifiers [ARRAY_SIZE (opcode_modifiers)];
/* Copy the default opcode modifier. */
memcpy (modifiers, opcode_modifiers, sizeof (modifiers));
if (strcmp (mod, "0"))
{
last = mod + strlen (mod);
for (next = mod; next && next < last; )
{
str = next_field (next, '|', &next);
if (str)
set_bitfield (str, modifiers, ARRAY_SIZE (modifiers));
}
}
output_opcode_modifier (table, modifiers, ARRAY_SIZE (modifiers));
}
static void
process_i386_operand_type (FILE *table, char *op, int macro,
const char *indent, int lineno)
{
char *str, *next, *last;
bitfield types [ARRAY_SIZE (operand_types)];
/* Copy the default operand type. */
memcpy (types, operand_types, sizeof (types));
if (strcmp (op, "0"))
{
last = op + strlen (op);
for (next = op; next && next < last; )
{
str = next_field (next, '|', &next, last);
if (str)
set_bitfield (str, types, 1, ARRAY_SIZE (types), lineno);
}
}
output_operand_type (table, types, ARRAY_SIZE (types), macro,
indent);
}
int Peer::process_messages()
{
//is handshake
if (m_buf.length - m_buf.pos >= HANDSHAKE_LENGHT &&
m_buf.data[m_buf.pos] == '\x13' &&
memcmp(&m_buf.data[m_buf.pos + 1], "BitTorrent protocol", 19) == 0 &&
m_torrent->memcmp_infohash_bin((unsigned char*)&m_buf.data[m_buf.pos + 28]))
{
if (m_state != PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
m_buf.pos += HANDSHAKE_LENGHT;
m_state = PEER_STATE_GENERAL_READY;
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received handshake\n";
#endif
}
char ip[16];
memset(ip, 0, 16);
strcpy(ip, inet_ntoa(m_sock->m_peer.sin_addr));
uint32_t piece_count = m_torrent->get_piece_count();
BLOCK_ID block_id;
while((int)m_buf.length - (int)m_buf.pos > 4)
{
uint32_t len = 0;
memcpy(&len, &m_buf.data[m_buf.pos], 4);
len = ntohl(len);
if (m_buf.length - m_buf.pos < len + 4)
goto end;
m_buf.pos += 4;
if (len != 0)
{
char id = m_buf.data[m_buf.pos++];
switch (id)
{
case '\x00'://choke: <len=0001><id=0>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received choke";
#endif
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
m_peer_choking = true;
if (m_state == PEER_STATE_WAIT_UNCHOKE)
return ERR_INTERNAL;//m_state = PEER_STATE_GENERAL_READY; иначе зацикливаемся
break;
case '\x01'://unchoke: <len=0001><id=1>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received unchoke";
#endif
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
m_peer_choking = false;
if (m_state == PEER_STATE_WAIT_UNCHOKE)
m_state = PEER_STATE_REQUEST_READY;
break;
case '\x02'://interested: <len=0001><id=2>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received interested";
#endif
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
m_peer_interested = true;
send_unchoke();
break;
case '\x03'://not interested: <len=0001><id=3>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received not interested";
#endif
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
m_peer_interested = false;
break;
case '\x04'://have: <len=0005><id=4><piece index>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received have";
#endif
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
PIECE_INDEX piece_index;
memcpy(&piece_index, &m_buf.data[m_buf.pos], 4);
piece_index = ntohl(piece_index);
if (piece_index >= piece_count)
return ERR_INTERNAL;
m_available_pieces.insert(piece_index);
set_bitfield(piece_index, piece_count, m_bitfield);
break;
case '\x05'://bitfield: <len=0001+X><id=5><bitfield>
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received bitfield";
#endif
if (len - 1 != m_torrent->get_bitfield_length())
return ERR_INTERNAL;
if (m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
memcpy(m_bitfield, &m_buf.data[m_buf.pos], len - 1);
for(PIECE_INDEX i = 0; i < piece_count; i++)
{
if (bit_in_bitfield(i, piece_count, m_bitfield))
m_available_pieces.insert(i);
}
break;
case '\x06'://request: <len=0013><id=6><index><begin><length>
if ( m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
PIECE_INDEX index;//индекс куска
BLOCK_OFFSET offset;
uint32_t length;
memcpy(&index,&m_buf.data[m_buf.pos], 4);
index = ntohl(index);
memcpy(&offset,&m_buf.data[m_buf.pos + 4], 4);
offset = ntohl(offset);
memcpy(&length,&m_buf.data[m_buf.pos + 8], 4);
length = ntohl(length);
//проверяем валидность индексов, смещений
if (length == 0 || length > BLOCK_LENGTH || offset % BLOCK_LENGTH != 0)
return ERR_INTERNAL;
BLOCK_INDEX block_index;
m_torrent->get_block_index_by_offset(index, offset, block_index) ;
uint32_t real_block_length;
m_torrent->get_block_length_by_index(index, block_index, real_block_length);
if (real_block_length != length)
return ERR_INTERNAL;
//кладем индекс блока в очередь запросов
generate_block_id(index, block_index, block_id);
m_requests_queue.insert(block_id);
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received request piece=" << index << " block=" << block_index;
#endif
break;
case '\x07'://piece: <len=0009+X><id=7><index><begin><block>
{
PIECE_INDEX index;//индекс куска
BLOCK_OFFSET offset;
uint32_t block_length = len - 9;
if (m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
if (block_length == 0 || block_length > BLOCK_LENGTH)
return ERR_INTERNAL;
memcpy(&index,&m_buf.data[m_buf.pos], 4);
index = ntohl(index);
memcpy(&offset,&m_buf.data[m_buf.pos + 4], 4);
offset = ntohl(offset);
if (offset % BLOCK_LENGTH != 0)
return ERR_INTERNAL;
generate_block_id(index, offset / BLOCK_LENGTH, block_id);
std::set<BLOCK_ID>::iterator iter = m_requested_blocks.find(block_id);
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received piece piece=" << index << " block=" << offset / BLOCK_LENGTH;
#endif
if (iter == m_requested_blocks.end())
return ERR_INTERNAL;
if (m_torrent->save_block(index, offset, block_length, &m_buf.data[m_buf.pos + 8]) != ERR_NO_ERROR)
return ERR_INTERNAL;
m_requested_blocks.erase(iter);
m_downloaded += block_length;
break;
}
case '\x08'://cancel: <len=0013><id=8><index><begin><length>
{
if (m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
PIECE_INDEX index;//индекс куска
BLOCK_OFFSET offset;
uint32_t length;
memcpy(&index,&m_buf.data[m_buf.pos], 4);
index = ntohl(index);
memcpy(&offset,&m_buf.data[m_buf.pos + 4], 4);
offset = ntohl(offset);
memcpy(&length,&m_buf.data[m_buf.pos + 8], 4);
length = ntohl(length);
//проверяем валидность индексов, смещений
if (length == 0 || length > BLOCK_LENGTH || offset % BLOCK_LENGTH != 0)
return ERR_INTERNAL;
uint32_t block_index;
m_torrent->get_block_index_by_offset(index, offset, block_index);
#ifdef PEER_DEBUG
logger::LOGGER() << "Peer " << m_ip.c_str() << ": is received cancel piece=" << index << " block=" << block_index;
#endif
uint32_t real_block_length;
m_torrent->get_block_length_by_index(index, block_index, real_block_length);
if (real_block_length != length)
return ERR_INTERNAL;
generate_block_id(index, block_index, block_id);
m_requested_blocks.erase(block_id);
break;
}
case '\x09'://port: <len=0003><id=9><listen-port>
if (m_state == PEER_STATE_WAIT_HANDSHAKE)
return ERR_INTERNAL;
break;
default:
return ERR_INTERNAL;
break;
}
m_buf.pos += len - 1;
}
}
end:
char temp[BUFFER_SIZE];
size_t len = m_buf.length - m_buf.pos;
memcpy(temp, &m_buf.data[m_buf.pos], len);
m_buf.length = len;
m_buf.pos = 0;
memcpy(m_buf.data, temp, len);
return ERR_NO_ERROR;
}
static void
process_i386_cpu_flag (FILE *table, char *flag, int macro,
const char *comma, const char *indent,
int lineno)
{
char *str, *next, *last;
unsigned int i;
bitfield flags [ARRAY_SIZE (cpu_flags)];
/* Copy the default cpu flags. */
memcpy (flags, cpu_flags, sizeof (cpu_flags));
if (strcasecmp (flag, "unknown") == 0)
{
/* We turn on everything except for cpu64 in case of
CPU_UNKNOWN_FLAGS. */
for (i = 0; i < ARRAY_SIZE (flags); i++)
if (flags[i].position != Cpu64)
flags[i].value = 1;
}
else if (flag[0] == '~')
{
last = flag + strlen (flag);
if (flag[1] == '(')
{
last -= 1;
next = flag + 2;
if (*last != ')')
fail (_("%s: %d: Missing `)' in bitfield: %s\n"), filename,
lineno, flag);
*last = '\0';
}
else
next = flag + 1;
/* First we turn on everything except for cpu64. */
for (i = 0; i < ARRAY_SIZE (flags); i++)
if (flags[i].position != Cpu64)
flags[i].value = 1;
/* Turn off selective bits. */
for (; next && next < last; )
{
str = next_field (next, '|', &next, last);
if (str)
set_bitfield (str, flags, 0, ARRAY_SIZE (flags), lineno);
}
}
else if (strcmp (flag, "0"))
{
/* Turn on selective bits. */
last = flag + strlen (flag);
for (next = flag; next && next < last; )
{
str = next_field (next, '|', &next, last);
if (str)
set_bitfield (str, flags, 1, ARRAY_SIZE (flags), lineno);
}
}
output_cpu_flags (table, flags, ARRAY_SIZE (flags), macro,
comma, indent);
}
static u16 set_ddr3_mem_reg_col(u16 reg, u16 col)
{
return set_bitfield(reg, col, 3, 0);
}
static u16 set_ddr3_mem_reg_c1m(u16 reg, u16 c1m)
{
return set_bitfield(reg, c1m, 1, 13);
}
static u16 set_ddr3_mem_reg_size(u16 reg, u16 size)
{
return set_bitfield(reg, size, 4, 8);
}
static u16 set_ddr3_mem_reg_row(u16 reg, u16 row)
{
return set_bitfield(reg, row, 3, 5);
}