| 1 |
/* |
| 2 |
* Copyright (c) 2020 joshua stein <jcs@jcs.org> |
| 3 |
* |
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* Permission to use, copy, modify, and distribute this software for any |
| 5 |
* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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|
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#include <string.h> |
| 18 |
#include "tcp.h" |
| 19 |
|
| 20 |
#define RCV_BUFFER_SIZE 1024 |
| 21 |
#define TCP_BUFFER_SIZE 8192 |
| 22 |
#define OPEN_TIMEOUT 60 |
| 23 |
|
| 24 |
/* define to enable SOCKS5 code */ |
| 25 |
#undef SOCKS |
| 26 |
|
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short gIPPDriverRefNum; |
| 28 |
|
| 29 |
unsigned long resolved_ip; |
| 30 |
|
| 31 |
// Invent our own memset, to avoid need to pull in all of ANSI-A4 |
| 32 |
void mntp_memset(void *ptr, int c, long n) { |
| 33 |
size_t i; |
| 34 |
if (!ptr) return; |
| 35 |
for (i = 0; i < n; ++i) { |
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// This feels weird |
| 37 |
((char *)ptr)[i] = (char)c; |
| 38 |
} |
| 39 |
} |
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|
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OSErr |
| 42 |
_TCPInit(void) |
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{ |
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ParamBlockRec pb; |
| 45 |
OSErr osErr; |
| 46 |
|
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mntp_memset(&pb, 0, sizeof(pb)); |
| 48 |
|
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gIPPDriverRefNum = -1; |
| 50 |
|
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pb.ioParam.ioCompletion = 0; |
| 52 |
pb.ioParam.ioNamePtr = "\p.IPP"; |
| 53 |
pb.ioParam.ioPermssn = fsCurPerm; |
| 54 |
|
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osErr = PBOpen(&pb, false); |
| 56 |
if (noErr == osErr) |
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gIPPDriverRefNum = pb.ioParam.ioRefNum; |
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|
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return osErr; |
| 60 |
} |
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|
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OSErr |
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_TCPGetOurIP(ip_addr *ip, long *netMask) |
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{ |
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OSErr osErr; |
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GetAddrParamBlock pb; |
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|
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mntp_memset(&pb, 0, sizeof(pb)); |
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|
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pb.csCode = ipctlGetAddr; |
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pb.ioCRefNum = gIPPDriverRefNum; |
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pb.ioResult = 1; |
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|
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osErr = PBControl((ParmBlkPtr)&pb, true); |
| 75 |
while (pb.ioResult > 0) |
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; |
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|
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if (pb.ioResult != noErr) |
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return pb.ioResult; |
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|
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if (ip != NULL) |
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*ip = pb.ourAddress; |
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if (netMask != NULL) |
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*netMask = pb.ourNetMask; |
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|
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return osErr; |
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} |
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|
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OSErr |
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_TCPCreate(TCPiopb *pb, StreamPtr *stream, Ptr rcvBufPtr, long rcvBufLen, |
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TCPNotifyProc aNotifyProc, Ptr userDataPtr, |
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TCPIOCompletionProc ioCompletion, Boolean async) |
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{ |
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OSErr osErr; |
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|
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mntp_memset(pb, 0, sizeof(*pb)); |
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|
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pb->csCode = TCPCreate; |
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pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->ioResult = 1; |
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|
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pb->csParam.create.rcvBuff = rcvBufPtr; |
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pb->csParam.create.rcvBuffLen = rcvBufLen; |
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pb->csParam.create.notifyProc = aNotifyProc; |
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pb->csParam.create.userDataPtr = userDataPtr; |
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|
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osErr = PBControl((ParmBlkPtr)pb, async); |
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if (!async && (noErr == osErr)) { |
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*stream = pb->tcpStream; |
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} |
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|
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return osErr; |
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} |
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|
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/* listen for an incoming connection */ |
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OSErr |
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_TCPPassiveOpen(TCPiopb *pb, StreamPtr stream, ip_addr *remoteIP, |
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tcp_port *remotePort, ip_addr *localIP, tcp_port *localPort, |
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Ptr userData, TCPIOCompletionProc ioCompletion, Boolean async) |
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{ |
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OSErr osErr; |
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short index; |
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|
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mntp_memset(pb, 0, sizeof(*pb)); |
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|
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pb->csCode = TCPPassiveOpen; |
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pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->tcpStream = stream; |
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pb->ioResult = 1; |
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|
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pb->csParam.open.ulpTimeoutAction = 1; /* abort half-open connection */ |
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pb->csParam.open.ulpTimeoutValue = 5; /* after 5 seconds */ |
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pb->csParam.open.validityFlags = 0xC0; |
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pb->csParam.open.commandTimeoutValue = 0; |
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pb->csParam.open.remoteHost = 0; |
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pb->csParam.open.remotePort = 0; |
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pb->csParam.open.localHost = 0; |
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pb->csParam.open.localPort = *localPort; |
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pb->csParam.open.tosFlags = 0x1; /* low delay */ |
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pb->csParam.open.precedence = 0; |
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pb->csParam.open.dontFrag = 0; |
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pb->csParam.open.timeToLive = 0; |
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pb->csParam.open.security = 0; |
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pb->csParam.open.optionCnt = 0; |
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pb->csParam.open.userDataPtr = userData; |
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|
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osErr = PBControl((ParmBlkPtr) pb, async); |
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if (!async && (osErr == noErr)) { |
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if (remoteIP) |
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*remoteIP = pb->csParam.open.remoteHost; |
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if (remotePort) |
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*remotePort = pb->csParam.open.remotePort; |
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if (localIP) |
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*localIP = pb->csParam.open.localHost; |
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*localPort = pb->csParam.open.localPort; |
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} |
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|
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return osErr; |
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} |
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|
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/* make an outgoing connection */ |
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OSErr |
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_TCPActiveOpen(TCPiopb *pb, StreamPtr stream, ip_addr remoteIP, |
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tcp_port remotePort, ip_addr *localIP, tcp_port *localPort, |
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Ptr userData, TCPIOCompletionProc ioCompletion, Boolean async) |
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{ |
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OSErr osErr; |
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short index; |
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|
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mntp_memset(pb, 0, sizeof(*pb)); |
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|
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pb->csCode = TCPActiveOpen; |
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pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->tcpStream = stream; |
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pb->ioResult = 1; |
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|
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pb->csParam.open.ulpTimeoutValue = 30; |
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pb->csParam.open.ulpTimeoutAction = 1; |
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pb->csParam.open.validityFlags = 0xC0; |
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#if 0 |
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/* not available with this csCode */ |
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pb->csParam.open.commandTimeoutValue = 30; |
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#endif |
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pb->csParam.open.remoteHost = remoteIP; |
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pb->csParam.open.remotePort = remotePort; |
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pb->csParam.open.localHost = 0; |
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pb->csParam.open.localPort = *localPort; |
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pb->csParam.open.tosFlags = 0; |
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pb->csParam.open.precedence = 0; |
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pb->csParam.open.dontFrag = 0; |
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pb->csParam.open.timeToLive = 0; |
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pb->csParam.open.security = 0; |
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pb->csParam.open.optionCnt = 0; |
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for (index = 0; index < sizeof(pb->csParam.open.options); ++index) |
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pb->csParam.open.options[index] = 0; |
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pb->csParam.open.userDataPtr = userData; |
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|
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osErr = PBControl((ParmBlkPtr) pb, async); |
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if (!async && (noErr == osErr)) { |
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*localIP = pb->csParam.open.localHost; |
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*localPort = pb->csParam.open.localPort; |
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} |
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|
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return osErr; |
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} |
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|
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OSErr |
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_TCPSend(TCPiopb *pb, StreamPtr stream, wdsEntry *wdsPtr, Ptr userData, |
| 212 |
TCPIOCompletionProc ioCompletion, Boolean async) |
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{ |
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mntp_memset(pb, 0, sizeof(*pb)); |
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|
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pb->csCode = TCPSend; |
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pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->tcpStream = stream; |
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pb->ioResult = 1; |
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|
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pb->csParam.send.ulpTimeoutValue = 30; |
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pb->csParam.send.ulpTimeoutAction = 1; |
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pb->csParam.send.validityFlags = 0xC0; |
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pb->csParam.send.pushFlag = 1; /* XXX */ |
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pb->csParam.send.urgentFlag = 0; |
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pb->csParam.send.wdsPtr = (Ptr)wdsPtr; |
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pb->csParam.send.sendFree = 0; |
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pb->csParam.send.sendLength = 0; |
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pb->csParam.send.userDataPtr = userData; |
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|
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return PBControl((ParmBlkPtr)pb, async); |
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} |
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|
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OSErr |
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_TCPNoCopyRcv(TCPiopb *pb, StreamPtr stream, Ptr rdsPtr, |
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unsigned short rdsLength, Ptr userData, TCPIOCompletionProc ioCompletion, |
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Boolean async) |
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{ |
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mntp_memset(pb, 0, sizeof(*pb)); |
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|
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pb->csCode = TCPNoCopyRcv; |
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pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->tcpStream = stream; |
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pb->ioResult = 1; |
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|
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pb->csParam.receive.commandTimeoutValue = 30; |
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pb->csParam.receive.urgentFlag = 0; |
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pb->csParam.receive.markFlag = 0; |
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pb->csParam.receive.rdsPtr = rdsPtr; |
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pb->csParam.receive.rdsLength = rdsLength; |
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pb->csParam.receive.userDataPtr = userData; |
| 254 |
|
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return PBControl((ParmBlkPtr)pb, async); |
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} |
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|
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OSErr |
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_TCPRcv(TCPiopb *pb, StreamPtr stream, Ptr rcvBufPtr, |
| 260 |
unsigned short *rcvBufLen, Ptr userData, TCPIOCompletionProc ioCompletion, |
| 261 |
Boolean async) |
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{ |
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OSErr osErr; |
| 264 |
|
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mntp_memset(pb, 0, sizeof(*pb)); |
| 266 |
|
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pb->csCode = TCPRcv; |
| 268 |
pb->ioCompletion = ioCompletion; |
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pb->ioCRefNum = gIPPDriverRefNum; |
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pb->tcpStream = stream; |
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pb->ioResult = 1; |
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|
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pb->csParam.receive.commandTimeoutValue = 30; |
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pb->csParam.receive.urgentFlag = 0; |
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pb->csParam.receive.markFlag = 0; |
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pb->csParam.receive.rcvBuff = rcvBufPtr; |
| 277 |
pb->csParam.receive.rcvBuffLen = *rcvBufLen; |
| 278 |
pb->csParam.receive.userDataPtr = userData; |
| 279 |
|
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osErr = PBControl((ParmBlkPtr)pb, async); |
| 281 |
if (!async) |
| 282 |
*rcvBufLen = pb->csParam.receive.rcvBuffLen; |
| 283 |
|
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return osErr; |
| 285 |
} |
| 286 |
|
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OSErr |
| 288 |
_TCPBfrReturn(TCPiopb *pb, StreamPtr stream, Ptr rdsPtr, Ptr userData, |
| 289 |
TCPIOCompletionProc ioCompletion, Boolean async) |
| 290 |
{ |
| 291 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 292 |
|
| 293 |
pb->csCode = TCPRcvBfrReturn; |
| 294 |
pb->ioCompletion = ioCompletion; |
| 295 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 296 |
pb->tcpStream = stream; |
| 297 |
pb->ioResult = 1; |
| 298 |
|
| 299 |
pb->csParam.receive.rdsPtr = rdsPtr; |
| 300 |
pb->csParam.receive.userDataPtr = userData; |
| 301 |
|
| 302 |
return PBControl((ParmBlkPtr)pb, async); |
| 303 |
} |
| 304 |
|
| 305 |
OSErr |
| 306 |
_TCPClose(TCPiopb *pb, StreamPtr stream, Ptr userData, |
| 307 |
TCPIOCompletionProc ioCompletion, Boolean async) |
| 308 |
{ |
| 309 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 310 |
|
| 311 |
pb->csCode = TCPClose; |
| 312 |
pb->ioCompletion = ioCompletion; |
| 313 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 314 |
pb->tcpStream = stream; |
| 315 |
pb->ioResult = 1; |
| 316 |
|
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pb->csParam.close.ulpTimeoutValue = 30; |
| 318 |
pb->csParam.close.ulpTimeoutAction = 1; |
| 319 |
pb->csParam.close.validityFlags = 0xC0; |
| 320 |
pb->csParam.close.userDataPtr = userData; |
| 321 |
|
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return PBControl((ParmBlkPtr)pb, async); |
| 323 |
} |
| 324 |
|
| 325 |
OSErr |
| 326 |
_TCPAbort(TCPiopb *pb, StreamPtr stream, Ptr userData, |
| 327 |
TCPIOCompletionProc ioCompletion, Boolean async) |
| 328 |
{ |
| 329 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 330 |
|
| 331 |
pb->csCode = TCPAbort; |
| 332 |
pb->ioCompletion = ioCompletion; |
| 333 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 334 |
pb->tcpStream = stream; |
| 335 |
pb->ioResult = 1; |
| 336 |
|
| 337 |
pb->csParam.abort.userDataPtr = userData; |
| 338 |
|
| 339 |
return PBControl((ParmBlkPtr)pb, async); |
| 340 |
} |
| 341 |
|
| 342 |
OSErr |
| 343 |
_TCPStatus(TCPiopb *pb, StreamPtr stream, struct TCPStatusPB *status, |
| 344 |
Ptr userData, TCPIOCompletionProc ioCompletion, Boolean async) |
| 345 |
{ |
| 346 |
OSErr osErr; |
| 347 |
|
| 348 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 349 |
|
| 350 |
pb->csCode = TCPStatus; |
| 351 |
pb->ioCompletion = ioCompletion; |
| 352 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 353 |
pb->tcpStream = stream; |
| 354 |
pb->csParam.status.userDataPtr = userData; |
| 355 |
pb->ioResult = 1; |
| 356 |
|
| 357 |
osErr = PBControl((ParmBlkPtr)pb, async); |
| 358 |
if (!async && (noErr == osErr)) { |
| 359 |
*status = pb->csParam.status; |
| 360 |
} |
| 361 |
|
| 362 |
return osErr; |
| 363 |
} |
| 364 |
|
| 365 |
OSErr |
| 366 |
_TCPRelease(TCPiopb *pb, StreamPtr stream, Ptr userData, |
| 367 |
TCPIOCompletionProc ioCompletion, Boolean async) |
| 368 |
{ |
| 369 |
OSErr osErr; |
| 370 |
|
| 371 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 372 |
|
| 373 |
pb->csCode = TCPRelease; |
| 374 |
pb->ioCompletion = ioCompletion; |
| 375 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 376 |
pb->tcpStream = stream; |
| 377 |
pb->ioResult = 1; |
| 378 |
|
| 379 |
pb->csParam.status.userDataPtr = userData; |
| 380 |
|
| 381 |
osErr = PBControl((ParmBlkPtr)pb, async); |
| 382 |
|
| 383 |
return osErr; |
| 384 |
} |
| 385 |
|
| 386 |
OSErr |
| 387 |
_UDPMaxMTUSize(UDPiopb *pb, short *mtu) |
| 388 |
{ |
| 389 |
OSErr osErr; |
| 390 |
|
| 391 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 392 |
|
| 393 |
pb->csCode = UDPMaxMTUSize; |
| 394 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 395 |
pb->ioResult = 1; |
| 396 |
|
| 397 |
pb->csParam.mtu.remoteHost = (ip_addr)0; |
| 398 |
|
| 399 |
osErr = PBControl((ParmBlkPtr)pb, false); |
| 400 |
|
| 401 |
if (osErr == noErr) |
| 402 |
*mtu = pb->csParam.mtu.mtuSize; |
| 403 |
|
| 404 |
return osErr; |
| 405 |
} |
| 406 |
|
| 407 |
OSErr |
| 408 |
_UDPCreate(UDPiopb *pb, StreamPtr *stream, Ptr rcvBufPtr, long rcvBufLen, |
| 409 |
UDPNotifyProc aNotifyProc, Ptr userDataPtr, |
| 410 |
UDPIOCompletionProc ioCompletion, Boolean async) |
| 411 |
{ |
| 412 |
OSErr osErr; |
| 413 |
|
| 414 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 415 |
|
| 416 |
pb->csCode = UDPCreate; |
| 417 |
pb->ioCompletion = ioCompletion; |
| 418 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 419 |
pb->ioResult = 1; |
| 420 |
|
| 421 |
pb->csParam.create.rcvBuff = rcvBufPtr; |
| 422 |
pb->csParam.create.rcvBuffLen = rcvBufLen; |
| 423 |
pb->csParam.create.notifyProc = aNotifyProc; |
| 424 |
pb->csParam.create.userDataPtr = userDataPtr; |
| 425 |
|
| 426 |
osErr = PBControl((ParmBlkPtr)pb, async); |
| 427 |
if (!async && (noErr == osErr)) { |
| 428 |
*stream = pb->udpStream; |
| 429 |
} |
| 430 |
|
| 431 |
return osErr; |
| 432 |
} |
| 433 |
|
| 434 |
OSErr |
| 435 |
_UDPSend(UDPiopb *pb, StreamPtr stream, wdsEntry *wdsPtr, ip_addr remoteIP, |
| 436 |
udp_port remotePort, Ptr userData, UDPIOCompletionProc ioCompletion, |
| 437 |
Boolean async) |
| 438 |
{ |
| 439 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 440 |
|
| 441 |
pb->csCode = UDPWrite; |
| 442 |
pb->ioCompletion = ioCompletion; |
| 443 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 444 |
pb->udpStream = stream; |
| 445 |
pb->ioResult = 1; |
| 446 |
|
| 447 |
pb->csParam.send.remoteHost = remoteIP; |
| 448 |
pb->csParam.send.remotePort = remotePort; |
| 449 |
pb->csParam.send.wdsPtr = (Ptr)wdsPtr; |
| 450 |
pb->csParam.send.checkSum = 0; |
| 451 |
pb->csParam.send.sendLength = 0; |
| 452 |
pb->csParam.send.userDataPtr = userData; |
| 453 |
|
| 454 |
return PBControl((ParmBlkPtr)pb, async); |
| 455 |
} |
| 456 |
|
| 457 |
OSErr _UDPRcv(UDPiopb *pb, StreamPtr stream, Ptr rcvBufPtr, |
| 458 |
unsigned short *rcvBufLen, ip_addr remoteIP, udp_port remotePort, Ptr userData, UDPIOCompletionProc ioCompletion, |
| 459 |
Boolean async) |
| 460 |
{ |
| 461 |
OSErr osErr; |
| 462 |
|
| 463 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 464 |
|
| 465 |
pb->csCode = UDPRead; |
| 466 |
pb->ioCompletion = ioCompletion; |
| 467 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 468 |
pb->udpStream = stream; |
| 469 |
pb->ioResult = 1; |
| 470 |
|
| 471 |
pb->csParam.receive.remoteHost = remoteIP; |
| 472 |
pb->csParam.receive.remotePort = remotePort; |
| 473 |
pb->csParam.receive.timeOut = 5; |
| 474 |
pb->csParam.receive.rcvBuff = rcvBufPtr; |
| 475 |
pb->csParam.receive.rcvBuffLen = *rcvBufLen; |
| 476 |
pb->csParam.receive.userDataPtr = userData; |
| 477 |
|
| 478 |
osErr = PBControl((ParmBlkPtr)pb, async); |
| 479 |
if (!async) |
| 480 |
*rcvBufLen = pb->csParam.receive.rcvBuffLen; |
| 481 |
|
| 482 |
return osErr; |
| 483 |
} |
| 484 |
|
| 485 |
OSErr |
| 486 |
_UDPRelease(UDPiopb *pb, StreamPtr stream, Ptr userData, |
| 487 |
UDPIOCompletionProc ioCompletion, Boolean async) |
| 488 |
{ |
| 489 |
OSErr osErr; |
| 490 |
|
| 491 |
mntp_memset(pb, 0, sizeof(*pb)); |
| 492 |
|
| 493 |
pb->csCode = UDPRelease; |
| 494 |
pb->ioCompletion = ioCompletion; |
| 495 |
pb->ioCRefNum = gIPPDriverRefNum; |
| 496 |
pb->udpStream = stream; |
| 497 |
pb->ioResult = 1; |
| 498 |
|
| 499 |
//pb->csParam.status.userDataPtr = userData; |
| 500 |
|
| 501 |
osErr = PBControl((ParmBlkPtr)pb, async); |
| 502 |
|
| 503 |
return osErr; |
| 504 |
} |
| 505 |
|
| 506 |
|
| 507 |
/* convenience functions */ |
| 508 |
|
| 509 |
unsigned long |
| 510 |
ip2long(char *ip) |
| 511 |
{ |
| 512 |
unsigned long address = 0; |
| 513 |
short dotcount = 0, i; |
| 514 |
unsigned short b = 0; |
| 515 |
|
| 516 |
for (i = 0; ip[i] != 0; i++) { |
| 517 |
if (ip[i] == '.') { |
| 518 |
if (++dotcount > 3) |
| 519 |
return (0); |
| 520 |
address <<= 8; |
| 521 |
address |= b; |
| 522 |
b = 0; |
| 523 |
} else if (ip[i] >= '0' && ip[i] <= '9') { |
| 524 |
b *= 10; |
| 525 |
b += (ip[i] - '0'); |
| 526 |
if (b > 255) |
| 527 |
return (0); |
| 528 |
} else |
| 529 |
return (0); |
| 530 |
} |
| 531 |
|
| 532 |
if (dotcount != 3) |
| 533 |
return (0); |
| 534 |
address <<= 8; |
| 535 |
address |= b; |
| 536 |
return address; |
| 537 |
} |
| 538 |
|
| 539 |
#ifdef SOCKS |
| 540 |
#define SOCKS_VERSION_SOCKS5 0x5 |
| 541 |
#define SOCKS_METHOD_AUTH_NONE 0x0 |
| 542 |
#define SOCKS_REQUEST_CONNECT 0x1 |
| 543 |
#define SOCKS_REQUEST_ATYP_DOMAINNAME 0x3 |
| 544 |
#define SOCKS_REPLY_SUCCESS 0x0 |
| 545 |
|
| 546 |
OSErr |
| 547 |
SOCKS5TCPActiveOpen(TCPiopb *pb, StreamPtr stream, ip_addr socks_ip, |
| 548 |
tcp_port socks_port, char *remote_host, tcp_port remote_port, |
| 549 |
ip_addr *local_ip, tcp_port *local_port, Ptr user_data, |
| 550 |
TCPIOCompletionProc io_completion, Boolean async) |
| 551 |
{ |
| 552 |
OSErr err; |
| 553 |
TCPStatusPB status_pb; |
| 554 |
wdsEntry wds[2]; |
| 555 |
char data[255] = { 0 }; |
| 556 |
unsigned short len, remote_host_len; |
| 557 |
|
| 558 |
remote_host_len = strlen(remote_host); |
| 559 |
if (remote_host_len + 7 > sizeof(data)) |
| 560 |
return -1; |
| 561 |
|
| 562 |
err = _TCPActiveOpen(pb, stream, socks_ip, socks_port, local_ip, |
| 563 |
local_port, user_data, io_completion, async); |
| 564 |
if (err != noErr) |
| 565 |
return err; |
| 566 |
|
| 567 |
data[0] = SOCKS_VERSION_SOCKS5; |
| 568 |
data[1] = 1; /* nmethods */ |
| 569 |
data[2] = SOCKS_METHOD_AUTH_NONE; |
| 570 |
|
| 571 |
mntp_memset(&wds, 0, sizeof(wds)); |
| 572 |
wds[0].ptr = (Ptr)&data; |
| 573 |
wds[0].length = 3; |
| 574 |
|
| 575 |
err = _TCPSend(pb, stream, wds, nil, nil, false); |
| 576 |
if (err) |
| 577 |
goto fail; |
| 578 |
|
| 579 |
for (;;) { |
| 580 |
err = _TCPStatus(pb, stream, &status_pb, nil, nil, false); |
| 581 |
if (err != noErr) |
| 582 |
goto fail; |
| 583 |
|
| 584 |
if (status_pb.amtUnreadData >= 2) |
| 585 |
break; |
| 586 |
} |
| 587 |
|
| 588 |
len = 2; |
| 589 |
err = _TCPRcv(pb, stream, (Ptr)&data, &len, nil, nil, false); |
| 590 |
if (err != noErr) |
| 591 |
goto fail; |
| 592 |
|
| 593 |
if (data[0] != SOCKS_VERSION_SOCKS5 || data[1] != SOCKS_METHOD_AUTH_NONE) |
| 594 |
goto fail; |
| 595 |
|
| 596 |
len = 0; |
| 597 |
data[len++] = SOCKS_VERSION_SOCKS5; |
| 598 |
data[len++] = SOCKS_REQUEST_CONNECT; |
| 599 |
data[len++] = 0; /* reserved */ |
| 600 |
data[len++] = SOCKS_REQUEST_ATYP_DOMAINNAME; |
| 601 |
data[len++] = remote_host_len; |
| 602 |
memcpy(data + len, remote_host, remote_host_len); |
| 603 |
len += remote_host_len; |
| 604 |
data[len++] = (remote_port >> 8); |
| 605 |
data[len++] = (remote_port & 0xff); |
| 606 |
|
| 607 |
mntp_memset(&wds, 0, sizeof(wds)); |
| 608 |
wds[0].ptr = (Ptr)&data; |
| 609 |
wds[0].length = len; |
| 610 |
|
| 611 |
err = _TCPSend(pb, stream, wds, nil, nil, false); |
| 612 |
if (err) |
| 613 |
goto fail; |
| 614 |
|
| 615 |
for (;;) { |
| 616 |
err = _TCPStatus(pb, stream, &status_pb, nil, nil, false); |
| 617 |
if (err != noErr) |
| 618 |
goto fail; |
| 619 |
|
| 620 |
if (status_pb.amtUnreadData >= 7) |
| 621 |
break; |
| 622 |
} |
| 623 |
|
| 624 |
len = status_pb.amtUnreadData; |
| 625 |
if (len > sizeof(data)) |
| 626 |
len = sizeof(data); |
| 627 |
err = _TCPRcv(pb, stream, (Ptr)&data, &len, nil, nil, false); |
| 628 |
if (err != noErr) |
| 629 |
goto fail; |
| 630 |
|
| 631 |
if (data[0] != SOCKS_VERSION_SOCKS5 || data[1] != SOCKS_REPLY_SUCCESS) |
| 632 |
goto fail; |
| 633 |
|
| 634 |
return noErr; |
| 635 |
|
| 636 |
fail: |
| 637 |
_TCPClose(pb, stream, nil, nil, false); |
| 638 |
return err; |
| 639 |
} |
| 640 |
#endif /* SOCKS */ |