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searchdaemon.cpp
1596 lines (1305 loc) · 39.1 KB
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searchdaemon.cpp
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//
// Copyright (c) 2017-2023, Manticore Software LTD (https://manticoresearch.com)
// Copyright (c) 2001-2016, Andrew Aksyonoff
// Copyright (c) 2008-2016, Sphinx Technologies Inc
// All rights reserved
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License. You should have
// received a copy of the GPL license along with this program; if you
// did not, you can find it at http://www.gnu.org/
//
/// @file searchdaemon.cpp
/// Definitions for the stuff need by searchd to work and serve the indexes.
#include "sphinxstd.h"
#include "searchdaemon.h"
#include "coroutine.h"
#include <optional>
#if _WIN32
#define USE_PSI_INTERFACE 1
// for MAC address
#include <iphlpapi.h>
#pragma message("Automatically linking with iphlpapi.lib")
#pragma comment(lib, "iphlpapi.lib")
#pragma comment(linker, "/defaultlib:WS2_32.Lib")
#pragma message("Automatically linking with WS2_32.Lib")
// socket function definitions
#pragma comment(linker, "/defaultlib:wsock32.lib")
#pragma message("Automatically linking with wsock32.lib")
#else
#include <netdb.h>
// for MAC address
#include <net/if.h>
#include <sys/ioctl.h>
#include <net/ethernet.h>
// TCP_NODELAY, TCP_FASTOPEN, etc.
#include <netinet/tcp.h>
#endif
// for FreeBSD
#if defined(__FreeBSD__)
#include <sys/sysctl.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#endif
#include <cmath>
/////////////////////////////////////////////////////////////////////////////
// MISC GLOBALS
/////////////////////////////////////////////////////////////////////////////
const char * szCommand ( int eCmd)
{
const char* szCommands[SEARCHD_COMMAND_TOTAL] = {"command_search", "command_excerpt", "command_update",
"command_keywords", "command_persist", "command_status", "gap_6", "command_flushattrs", "command_sphinxql",
"command_ping", "command_delete", "command_set", "command_insert", "command_replace", "command_commit",
"command_suggest", "command_json", "command_callpq", "command_cluster", "command_getfield"};
if ( eCmd<SEARCHD_COMMAND_TOTAL )
return szCommands[eCmd];
return "***WRONG COMMAND!***";
}
// 'like' matcher
CheckLike::CheckLike( const char* sPattern )
{
if ( !sPattern )
return;
m_sPattern.Reserve( 2 * (int) strlen( sPattern ));
char* d = const_cast<char*> ( m_sPattern.cstr());
// remap from SQL LIKE syntax to Sphinx wildcards syntax
// '_' maps to '?', match any single char
// '%' maps to '*', match zero or mor chars
for ( const char* s = sPattern; *s; ++s )
{
switch ( *s )
{
case '_': *d++ = '?';
break;
case '%': *d++ = '*';
break;
case '?': *d++ = '\\';
*d++ = '?';
break;
case '*': *d++ = '\\';
*d++ = '*';
break;
default: *d++ = *s;
break;
}
}
*d = '\0';
}
bool CheckLike::Match( const char* sValue )
{
return sValue && ( m_sPattern.IsEmpty() || sphWildcardMatch( sValue, m_sPattern.cstr()));
}
// string vector with 'like' matcher
/////////////////////////////////////////////////////////////////////////////
VectorLike::VectorLike( int iCols )
: CheckLike( nullptr )
{
m_dHeadNames.Resize ( iCols );
}
VectorLike::VectorLike ( const CSphString & sPattern )
: CheckLike ( sPattern.cstr () )
{
m_dHeadNames.Resize ( 2 );
SetColName ( "Variable_name" );
SetColName ( "Value", 1 );
}
VectorLike::VectorLike( const CSphString& sPattern, int iCols )
: CheckLike ( sPattern.cstr () )
{
m_dHeadNames.Resize ( iCols );
}
VectorLike::VectorLike ( const CSphString & sPattern, std::initializer_list<const char *> sCols )
: CheckLike ( sPattern.cstr () )
{
for ( const char * szCol : sCols )
m_dHeadNames.Add ( szCol );
}
void VectorLike::SetColNames ( std::initializer_list<const char *> sCols )
{
for ( const char * szCol : sCols )
m_dHeadNames.Add ( szCol );
}
void VectorLike::SetColName ( CSphString sValue, int iIdx )
{
assert ( iIdx>=0 && iIdx<m_dHeadNames.GetLength () );
m_dHeadNames[iIdx] = std::move(sValue);
}
const VecTraits_T<CSphString> & VectorLike::Header () const
{
return m_dHeadNames;
}
bool VectorLike::MatchAdd( const char* sValue )
{
assert ( m_dHeadNames.GetLength ()>=1 );
if ( Match( sValue ))
{
Add( sValue );
return true;
}
return false;
}
bool VectorLike::MatchAddf ( const char* sTemplate, ... )
{
assert ( m_dHeadNames.GetLength ()>=1 );
va_list ap;
CSphString sValue;
va_start ( ap, sTemplate );
sValue.SetSprintfVa( sTemplate, ap );
va_end ( ap );
return MatchAdd( sValue.cstr());
}
void VectorLike::Addf ( const char * sValueTmpl, ... )
{
va_list ap;
StringBuilder_c sValue;
va_start ( ap, sValueTmpl );
sValue.vSprintf ( sValueTmpl, ap );
va_end ( ap );
Add ( sValue.cstr () );
}
void VectorLike::MatchTuplet ( const char * sKey, const char * sValue )
{
assert ( m_dHeadNames.GetLength ()>=2 );
if ( !Match ( sKey ) )
return;
Add ( sKey );
Add ( sValue );
FillTail ( 2 );
}
void VectorLike::MatchTupletf ( const char * sKey, const char * sValueTmpl, ... )
{
assert ( m_dHeadNames.GetLength ()>=2 );
if ( !Match ( sKey ) )
return;
va_list ap;
StringBuilder_c sValue;
va_start ( ap, sValueTmpl );
sValue.vSprintf( sValueTmpl, ap );
va_end ( ap );
Add ( sKey );
Add ( sValue.cstr() );
FillTail ( 2 );
}
void VectorLike::MatchTupletFn ( const char * sKey, Generator_fn && fnValuePrinter )
{
assert ( m_dHeadNames.GetLength ()>=2 );
if ( !Match ( sKey ) )
return;
Add ( sKey );
Add ( fnValuePrinter () );
FillTail ( 2 );
}
void VectorLike::MatchTupletFn ( const char * sKey, GeneratorS_fn && fnValuePrinter )
{
assert ( m_dHeadNames.GetLength ()>=2 );
if ( !Match ( sKey ) )
return;
Add ( sKey );
Add ( CSphString ( fnValuePrinter () ) );
FillTail ( 2 );
}
void VectorLike::FillTail ( int iHas )
{
for ( auto iLen = m_dHeadNames.GetLength (); iHas<iLen; ++iHas )
Add("");
}
static const char * g_dIndexTypeName[1 + ( int ) IndexType_e::ERROR_] = {
"plain",
"template",
"rt",
"percolate",
"distributed",
"invalid"
};
CSphString GetTypeName( IndexType_e eType )
{
return g_dIndexTypeName[( int ) eType];
}
IndexType_e TypeOfIndexConfig( const CSphString& sType )
{
if ( sType=="distributed" )
return IndexType_e::DISTR;
if ( sType=="rt" )
return IndexType_e::RT;
if ( sType=="percolate" )
return IndexType_e::PERCOLATE;
if ( sType=="template" )
return IndexType_e::TEMPLATE;
if (( sType.IsEmpty() || sType=="plain" ))
return IndexType_e::PLAIN;
return IndexType_e::ERROR_;
}
static void MaybeFatalLog ( CSphString * pFatal, const char * sTemplate, ... )
{
va_list ap;
va_start ( ap, sTemplate );
if ( pFatal )
pFatal->SetSprintfVa ( sTemplate, ap );
else
sphFatalVa ( sTemplate, ap );
va_end ( ap );
}
bool CheckPort ( int iPort, CSphString * pFatal )
{
if ( !IsPortInRange ( iPort ) )
{
MaybeFatalLog ( pFatal, "port %d is out of range", iPort );
return false;
}
return true;
}
// check only proto name in lowcase, no '_vip'
static Proto_e SimpleProtoByName ( const CSphString& sProto, CSphString * pFatal )
{
if ( sProto=="" )
return Proto_e::SPHINX;
if ( sProto=="mysql41" || sProto=="mysql" )
return Proto_e::MYSQL41;
if ( sProto=="http" )
return Proto_e::HTTP;
if ( sProto=="https" )
return Proto_e::HTTPS;
if ( sProto=="replication" )
return Proto_e::REPLICATION;
if ( sProto=="sphinx" )
return Proto_e::SPHINXSE;
MaybeFatalLog ( pFatal, "unknown listen protocol type '%s'", sProto.scstr());
return Proto_e::UNKNOWN;
}
static bool ProtoByName ( CSphString sFullProto, ListenerDesc_t & tDesc, CSphString * pFatal )
{
sFullProto.ToLower();
StrVec_t dParts;
sphSplit( dParts, sFullProto.cstr(), "_" );
if ( !dParts.IsEmpty() )
{
tDesc.m_eProto = SimpleProtoByName( dParts[0], pFatal );
if ( tDesc.m_eProto==Proto_e::UNKNOWN )
return false;
}
if ( dParts.GetLength() == 1 )
return true;
if ( dParts.GetLength() >= 2 )
{
bool bOk = dParts.GetLength() == 2;
if ( dParts[1] == "vip" )
tDesc.m_bVIP = true;
else if ( dParts[1] == "readonly" )
tDesc.m_bReadOnly = true;
else
bOk = false;
if ( bOk )
return true;
}
if ( dParts.GetLength() == 3 && dParts[2] == "readonly" )
{
tDesc.m_bReadOnly = true;
return true;
}
MaybeFatalLog ( pFatal, "unknown listen protocol type '%s'", sFullProto.scstr() );
return false;
}
static const ListenerDesc_t g_tInvalidListener;
/// listen = ( address ":" port | port | path | address ":" port start - port end ) [ ":" protocol ] [ "_vip" ]
ListenerDesc_t ParseListener ( const char* sSpec, CSphString * pFatal )
{
ListenerDesc_t tRes;
tRes.m_eProto = Proto_e::SPHINX;
tRes.m_uIP = htonl(INADDR_ANY);
tRes.m_iPort = SPHINXAPI_PORT;
tRes.m_iPortsCount = 0;
tRes.m_bVIP = false;
tRes.m_bReadOnly = false;
// split by colon
auto dParts = sphSplit( sSpec, ":" ); // diff. parts are :-separated
int iParts = dParts.GetLength();
if ( iParts>3 )
{
MaybeFatalLog ( pFatal, "invalid listen format (too many fields)" );
return g_tInvalidListener;
}
assert ( iParts>=1 && iParts<=3 );
// handle UNIX socket case
// might be either name on itself (1 part), or name+protocol (2 parts)
if ( *dParts[0].scstr()=='/' )
{
if ( iParts>2 )
{
MaybeFatalLog ( pFatal, "invalid listen format (too many fields)" );
return g_tInvalidListener;
}
if ( iParts==2 && !ProtoByName ( dParts[1], tRes, pFatal ) )
return g_tInvalidListener;
tRes.m_sUnix = dParts[0];
// MOVED!!! check outside ParseListener in order to make tests consistent despite platforms
#if _WIN32
MaybeFatalLog ( pFatal, "UNIX sockets are not supported on Windows" );
return g_tInvalidListener;
#else
return tRes;
#endif
}
// check if it all starts with a valid port number
auto sPart = dParts[0].cstr();
auto iLen = (int) strlen( sPart );
bool bAllDigits = true;
for ( int i = 0; i<iLen && bAllDigits; ++i )
if ( !isdigit( sPart[i] ))
bAllDigits = false;
int iPort = 0;
if ( bAllDigits && iLen<=5 ) // if we have num from only digits, it may be only port, nothing else!
{
iPort = atol( sPart );
if ( !CheckPort ( iPort, pFatal ) ) // lets forbid ambiguous magic like 0:sphinx or 99999:mysql41
return g_tInvalidListener;
}
// handle TCP port case
// one part. might be either port name, or host name (unix socked case is already parsed)
if ( iParts==1 )
{
if ( iPort )
{
// port name on itself
tRes.m_iPort = iPort;
} else
{
// host name on itself
tRes.m_sAddr = sSpec;
tRes.m_uIP = sphGetAddress ( sSpec, ( pFatal==nullptr ), false, pFatal );
if ( pFatal && !pFatal->IsEmpty() )
return g_tInvalidListener;
}
return tRes;
}
// two or three parts
if ( iPort )
{
// 1st part is a valid port number; must be port:proto
if ( iParts!=2 )
{
MaybeFatalLog ( pFatal, "invalid listen format (expected port:proto, got extra trailing part in listen=%s)", sSpec );
return g_tInvalidListener;
}
tRes.m_iPort = iPort;
if ( !ProtoByName ( dParts[1], tRes, pFatal ) )
return g_tInvalidListener;
return tRes;
}
// 1st part must be a host name; must be host:port[:proto]
if ( iParts==3 && !ProtoByName ( dParts[2], tRes, pFatal ) )
return g_tInvalidListener;
if ( dParts[0].IsEmpty() )
{
tRes.m_uIP = htonl(INADDR_ANY);
} else
{
tRes.m_sAddr = dParts[0];
tRes.m_uIP = sphGetAddress ( dParts[0].cstr(), ( pFatal==nullptr ), false, pFatal );
if ( pFatal && !pFatal->IsEmpty() )
return g_tInvalidListener;
}
auto dPorts = sphSplit( dParts[1].scstr(), "-" );
tRes.m_iPort = atoi( dPorts[0].cstr());
if ( !CheckPort( tRes.m_iPort, pFatal ) )
return g_tInvalidListener;
if ( dPorts.GetLength()==2 )
{
int iPortsEnd = atoi( dPorts[1].scstr() );
if ( !CheckPort ( iPortsEnd, pFatal ) )
return g_tInvalidListener;
int iPortsCount = iPortsEnd - tRes.m_iPort + 1;
if ( iPortsEnd<=tRes.m_iPort )
{
MaybeFatalLog ( pFatal, "ports range invalid %d-%d", tRes.m_iPort, iPortsEnd );
return g_tInvalidListener;
}
if ( iPortsCount<2 )
{
MaybeFatalLog( pFatal, "ports range %d-%d count should be at least 2, got %d", tRes.m_iPort, iPortsEnd, iPortsCount );
return g_tInvalidListener;
}
tRes.m_iPortsCount = iPortsCount;
}
return tRes;
}
/////////////////////////////////////////////////////////////////////////////
// NETWORK SOCKET WRAPPERS
/////////////////////////////////////////////////////////////////////////////
#if _WIN32
const char * sphSockError ( int iErr )
{
if ( iErr==0 )
iErr = WSAGetLastError ();
static char sBuf [ 256 ];
_snprintf ( sBuf, sizeof(sBuf), "WSA error %d", iErr );
return sBuf;
}
#else
const char* sphSockError( int )
{
return strerrorm(errno);
}
#endif
int sphSockGetErrno()
{
#if _WIN32
return WSAGetLastError();
#else
return errno;
#endif
}
void sphSockSetErrno( int iErr )
{
#if _WIN32
WSASetLastError ( iErr );
#else
errno = iErr;
#endif
}
int sphSockPeekErrno()
{
int iRes = sphSockGetErrno();
sphSockSetErrno( iRes );
return iRes;
}
int sphSetSockNB( int iSock )
{
#if _WIN32
u_long uMode = 1;
return ioctlsocket ( iSock, FIONBIO, &uMode );
#else
return fcntl( iSock, F_SETFL, O_NONBLOCK );
#endif
}
void sphSetSockNodelay ( int iSock )
{
#ifdef TCP_NODELAY
int iOn = 1;
if ( setsockopt ( iSock, IPPROTO_TCP, TCP_NODELAY, (char*)&iOn, sizeof ( iOn ) )<0 )
sphWarning ( "failed to set nodelay option: %s", sphSockError() );
#endif
}
void sphSetSockReuseAddr ( int iSock )
{
int iOn = 1;
if ( setsockopt ( iSock, SOL_SOCKET, SO_REUSEADDR, (char *) &iOn, sizeof ( iOn ) ) )
sphWarning ( "setsockopt(SO_REUSEADDR) failed: %s", sphSockError () );
}
void sphSetSockReusePort ( int iSock )
{
#if HAVE_SO_REUSEPORT
int iOn = 1;
if ( setsockopt ( iSock, SOL_SOCKET, SO_REUSEPORT, (char *) &iOn, sizeof ( iOn ) ) )
sphWarning ( "setsockopt(SO_REUSEPORT) failed: %s", sphSockError () );
#endif
}
void sphSetSockTFO ( int iSock)
{
#if defined (TCP_FASTOPEN)
int iOn = 1;
if ( setsockopt ( iSock, IPPROTO_TCP, TCP_FASTOPEN, (char *) &iOn, sizeof ( iOn ) ) )
sphLogDebug ( "setsockopt(TCP_FASTOPEN) failed: %s", sphSockError () );
#endif
}
#if _WIN32
/// on Windows, the wrapper just prevents the warnings
#pragma warning(push) // store current warning values
#pragma warning(disable:4127) // conditional expr is const
#pragma warning(disable:4389) // signed/unsigned mismatch
static void FDSet ( int fd, fd_set * fdset )
{
FD_SET ( fd, fdset );
}
#pragma warning(pop) // restore warnings
#else // !_WIN32
#if !HAVE_POLL
#define SPH_FDSET_OVERFLOW( _fd ) ( (_fd)<0 || (_fd)>=(int)FD_SETSIZE )
/// on UNIX, we also check that the descript won't corrupt the stack
static void FDSet( int fd, fd_set* set )
{
if ( SPH_FDSET_OVERFLOW( fd ))
sphFatal( "FDSet() failed fd=%d, FD_SETSIZE=%d", fd, FD_SETSIZE );
else
FD_SET ( fd, set );
}
#endif // !HAVE_POLL
#endif // _WIN32
/// wait until socket is readable or writable
int sphPoll( int iSock, int64_t tmTimeout, bool bWrite )
{
// don't need any epoll/kqueue here, since we check only 1 socket
#if HAVE_POLL
struct pollfd pfd;
pfd.fd = iSock;
pfd.events = bWrite ? POLLOUT : POLLIN;
return ::poll( &pfd, 1, int( tmTimeout / 1000 ));
#else
fd_set fdSet;
FD_ZERO ( &fdSet );
FDSet ( iSock, &fdSet );
struct timeval tv;
tv.tv_sec = (int)( tmTimeout / 1000000 );
tv.tv_usec = (int)( tmTimeout % 1000000 );
return ::select ( iSock+1, bWrite ? NULL : &fdSet, bWrite ? &fdSet : NULL, NULL, &tv );
#endif
}
static bool IsLocalhost ( DWORD uAddr )
{
return ( ( ntohl ( uAddr )>>24)==127 );
}
DWORD sphGetAddress ( const char * sHost, bool bFatal, bool bIP, CSphString * pFatal )
{
struct addrinfo tHints, * pResult = nullptr;
memset( &tHints, 0, sizeof( tHints ));
tHints.ai_family = AF_INET;
tHints.ai_socktype = SOCK_STREAM;
if ( bIP )
tHints.ai_flags = AI_NUMERICHOST;
int iResult = getaddrinfo( sHost, nullptr, &tHints, &pResult );
auto pResFree = AtScopeExit ( [pResult] { if (pResult) freeaddrinfo( pResult ); } );
if ( iResult!=0 || !pResult )
{
if ( pFatal )
pFatal->SetSprintf ( "no AF_INET address found for: %s, error %d: %s", sHost, iResult, gai_strerror(iResult) );
else if ( bFatal )
sphFatal( "no AF_INET address found for: %s, error %d: %s", sHost, iResult, gai_strerror(iResult) );
else
sphLogDebugv( "no AF_INET address found for: %s, error %d: %s", sHost, iResult, gai_strerror(iResult) );
return 0;
}
assert ( pResult );
auto * pSockaddr_ipv4 = ( struct sockaddr_in* ) pResult->ai_addr;
DWORD uAddr = pSockaddr_ipv4->sin_addr.s_addr;
if ( pResult->ai_next )
{
const bool bLocalHost = IsLocalhost ( uAddr );
char sAddrBuf[SPH_ADDRESS_SIZE+1];
StringBuilder_c sBuf( "; ip=", "ip=" );
while ( pResult )
{
auto * pAddr = ( struct sockaddr_in *)pResult->ai_addr;
DWORD uNextAddr = pAddr->sin_addr.s_addr;
sphFormatIP( sAddrBuf, sizeof( sAddrBuf ), uNextAddr );
sBuf += sAddrBuf; // can not use << as builder appends string buffer with tail '\0' and next chunks are invisible
pResult = pResult->ai_next;
if ( bLocalHost && !IsLocalhost ( uNextAddr ) )
uAddr = uNextAddr;
}
sphFormatIP( sAddrBuf, sizeof( sAddrBuf ), uAddr );
sphWarning( "multiple addresses (%s) found for '%s', using first one (%s)", sBuf.cstr(), sHost, sAddrBuf );
}
return uAddr;
}
/// formats IP address given in network byte order into sBuffer
/// returns the buffer
char* sphFormatIP( char* sBuffer, int iBufferSize, DWORD uAddress )
{
const BYTE* a = ( const BYTE* ) &uAddress;
snprintf( sBuffer, iBufferSize, "%u.%u.%u.%u", a[0], a[1], a[2], a[3] );
return sBuffer;
}
bool IsPortInRange( int iPort )
{
return ( iPort>0 ) && ( iPort<=0xFFFF );
}
/////////////////////////////////////////////////////////////////////////////
// NETWORK BUFFERS
/////////////////////////////////////////////////////////////////////////////
ISphOutputBuffer::ISphOutputBuffer()
{
m_dBuf.Reserve( NETOUTBUF );
}
// construct via adopting external buf
ISphOutputBuffer::ISphOutputBuffer( CSphVector<BYTE>& dChunk )
{
m_dBuf.SwapData( dChunk );
}
void ISphOutputBuffer::SendString( const char* sStr )
{
int iLen = sStr ? (int) strlen( sStr ) : 0;
SendInt( iLen );
SendBytes( sStr, iLen );
}
void ISphOutputBuffer::SendString ( const Str_t& sStr )
{
SendInt ( sStr.second );
SendBytes ( sStr );
}
void SendString ( const Str_t& sStr );
/// SmartOutputBuffer_t : chain of blobs could be used in scattered sending
/////////////////////////////////////////////////////////////////////////////
SmartOutputBuffer_t::~SmartOutputBuffer_t()
{
m_dChunks.Apply( []( ISphOutputBuffer*& pChunk ) {
SafeDelete ( pChunk );
} );
}
void SmartOutputBuffer_t::StartNewChunk()
{
m_dChunks.Add( new ISphOutputBuffer( m_dBuf ));
m_dBuf.Reserve( NETOUTBUF );
}
/*
void SmartOutputBuffer_t::AppendBuf ( SmartOutputBuffer_t &dBuf )
{
if ( !dBuf.m_dBuf.IsEmpty () )
dBuf.StartNewChunk ();
for ( auto * pChunk : dBuf.m_dChunks )
{
pChunk->AddRef ();
m_dChunks.Add ( pChunk );
}
}
void SmartOutputBuffer_t::PrependBuf ( SmartOutputBuffer_t &dBuf )
{
CSphVector<ISphOutputBuffer *> dChunks;
if ( !dBuf.m_dBuf.IsEmpty () )
dBuf.StartNewChunk ();
for ( auto * pChunk : dBuf.m_dChunks )
{
pChunk->AddRef ();
dChunks.Add ( pChunk );
}
dChunks.Append ( m_dChunks );
m_dChunks.SwapData ( dChunks );
}
*/
#ifndef UIO_MAXIOV
#define UIO_MAXIOV (1024)
#endif
// makes vector of chunks suitable to direct using in Send() or WSASend()
// returns federated size of the chunks
size_t SmartOutputBuffer_t::GetIOVec( CSphVector<sphIovec>& dOut ) const
{
size_t iOutSize = 0;
dOut.Reset();
m_dChunks.Apply( [ &dOut, &iOutSize ]( const ISphOutputBuffer* pChunk ) {
auto& dIovec = dOut.Add();
IOPTR( dIovec ) = IOBUFTYPE ( pChunk->GetBufPtr());
IOLEN ( dIovec ) = pChunk->GetSentCount();
iOutSize += IOLEN ( dIovec );
} );
if ( !m_dBuf.IsEmpty())
{
auto& dIovec = dOut.Add();
IOPTR ( dIovec ) = IOBUFTYPE ( GetBufPtr());
IOLEN ( dIovec ) = (int) m_dBuf.GetLengthBytes();
iOutSize += IOLEN ( dIovec );
}
assert ( dOut.GetLength()<UIO_MAXIOV );
return iOutSize;
};
void SmartOutputBuffer_t::Reset()
{
m_dChunks.Apply( []( ISphOutputBuffer*& pChunk ) {
SafeDelete ( pChunk );
} );
m_dChunks.Reset();
m_dBuf.Reset();
m_dBuf.Reserve( NETOUTBUF );
};
#if _WIN32
void SmartOutputBuffer_t::LeakTo ( CSphVector<ISphOutputBuffer *> dOut )
{
for ( auto & pChunk : m_dChunks )
dOut.Add ( pChunk );
m_dChunks.Reset ();
dOut.Add ( new ISphOutputBuffer ( m_dBuf ) );
m_dBuf.Reserve ( NETOUTBUF );
}
#endif
/////////////////////////////////////////////////////////////////////////////
InputBuffer_c::InputBuffer_c( const BYTE* pBuf, int iLen )
: m_pBuf( pBuf ), m_pCur( pBuf ), m_iLen( iLen )
{
if ( !pBuf || iLen<0 )
SetError ( "empty input buffer" );
}
InputBuffer_c::InputBuffer_c ( const VecTraits_T<BYTE> & dBuf )
: m_pBuf ( dBuf.begin() ), m_pCur ( dBuf.begin () ), m_iLen ( dBuf.GetLength() )
{
if ( dBuf.IsEmpty() )
SetError ( "empty input buffer" );
}
CSphString InputBuffer_c::GetString()
{
int iLen = GetInt();
return GetRawString ( iLen );
}
CSphString InputBuffer_c::GetRawString( int iLen )
{
CSphString sRes;
if ( m_bError || !IsDataSizeValid ( iLen ) )
return sRes;
if ( iLen )
sRes.SetBinary( (const char*) m_pCur, iLen );
m_pCur += iLen;
return sRes;
}
bool InputBuffer_c::GetString( CSphVector<BYTE>& dBuffer )
{
int iLen = GetInt();
if ( m_bError || !IsDataSizeValid ( iLen ) )
return false;
if ( !iLen )
return true;
return GetBytes( dBuffer.AddN( iLen ), iLen );
}
bool InputBuffer_c::GetBytes( void* pBuf, int iLen )
{
assert ( pBuf );
if ( m_bError || !IsDataSizeValid ( iLen ) )
return false;
memcpy( pBuf, m_pCur, iLen );
m_pCur += iLen;
return true;
}
bool InputBuffer_c::GetBytesZerocopy( const BYTE** ppData, int iLen )
{
assert ( ppData );
if ( m_bError || !IsDataSizeValid ( iLen ) )
return false;
*ppData = m_pCur;
m_pCur += iLen;
return true;
}
bool InputBuffer_c::GetDwords( CSphVector<DWORD>& dBuffer, int& iGot, int iMax )
{
iGot = GetInt();
if ( iGot<0 || iGot>iMax )
{
SetError( "length %d (should be in 0..%d range)", iGot, iMax );
return false;
}
dBuffer.Resize( iGot );
ARRAY_FOREACH ( i, dBuffer )
dBuffer[i] = GetDword();
if ( m_bError )
dBuffer.Reset();
return !m_bError;
}
bool InputBuffer_c::GetQwords( CSphVector<SphAttr_t>& dBuffer, int& iGot, int iMax )
{
iGot = GetInt();
if ( iGot<0 || iGot>iMax )
{
SetError( "length %d (should be in 0..%d range)", iGot, iMax );
return false;
}
dBuffer.Resize( iGot );
ARRAY_FOREACH ( i, dBuffer )
dBuffer[i] = GetUint64();
if ( m_bError )
dBuffer.Reset();
return !m_bError;
}
void InputBuffer_c::SetError( const char * sTemplate, ... )
{
m_bError = true;
va_list ap;
va_start ( ap, sTemplate );
m_sError.SetSprintfVa ( sTemplate, ap );
va_end ( ap );
}
bool InputBuffer_c::IsDataSizeValid ( int iSize )
{
if ( !IsLessMaxPacket ( iSize ) )
{
return false;
} else if ( m_pCur + iSize>m_pBuf + m_iLen )
{
SetError( "read overflows buffer by %d byte, data size %d", (int)( ( m_pCur + iSize ) - ( m_pBuf + m_iLen ) ), iSize );
return false;
}
return true;
}
bool InputBuffer_c::IsLessMaxPacket ( int iSize )
{
if ( iSize<0 )
{
SetError( "negative data length %d", iSize );
return false;
} else if ( iSize>m_iMaxPacketSize )