Commit 3b0d3a90 authored by Kaleb Keithley Keithley's avatar Kaleb Keithley Keithley
Browse files

Initial revision

parent 3bd236a0
/* $XFree86: xc/lib/xtrans/Xtransos2.c,v 3.10 2003/08/26 15:38:39 tsi Exp $ */
/*
* (c) Copyright 1996 by Sebastien Marineau and Holger Veit
* <marineau@genie.uottawa.ca>
* <Holger.Veit@gmd.de>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* HOLGER VEIT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Sebastien Marineau or Holger Veit shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from Holger Veit or Sebastien Marineau.
*
*/
/* Implementation of the OS/2 local pipe transport layer */
#define INCL_DOSNMPIPES
#define INCL_DOSPROCESS
#define INCL_DOSERRORS
#define INCL_DOSFILEMGR
#undef BYTE
#undef BOOL
#include <os2.h>
#ifdef XSERV_t
extern HEV hPipeSem;
BOOL init_server_pipes();
#endif
/*************************************************************************
* Independent Layer
*************************************************************************/
#ifdef TRANS_CLIENT
static XtransConnInfo
TRANS(Os2OpenClient)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
APIRET rc;
HFILE hfd,hServer;
ULONG action,byteWritten,State;
char pipename[256],clientname[256];
char server_string[256];
struct sockaddr *addr_name;
unsigned char pipe_len;
XtransConnInfo ciptr;
static int unique_id=0;
int i,namelen,try;
PRMSG(2,"Os2OpenClient(%s,%s,%s)\n",protocol,host,port);
/* test, whether the host is really local, i.e. either
* "os2" or "local"
*/
if (strcmp(protocol,"os2") && strcmp(protocol,"local")) {
PRMSG (1,
"Os2OpenClient: Cannot connect to non-local host %s\n",
host, 0, 0);
return NULL;
}
/* make the pipename */
if (port && *port ) {
if( *port == '/' ) { /* A full pathname */
(void) sprintf(pipename, "\\PIPE\\X\\%s,", port);
} else {
(void) sprintf(pipename, "%s%s", "\\PIPE\\X\\xf86.", port);
}
} else {
(void) sprintf(pipename, "\\PIPE\\X\\xfree86"); }
PRMSG(5, "Os2OpenClient: Creating pipe %s\n",pipename, 0,0 );
/* make a connection entry */
if( (ciptr=(XtransConnInfo)xcalloc(1,sizeof(struct _XtransConnInfo))) == NULL ) {
PRMSG(1,"Os2OpenClient: calloc(1,%d) failed\n",
sizeof(struct _XtransConnInfo),0,0 );
return NULL;
}
/* open the pipe. Try ten times before giving up at 500ms intervals*/
try = 0;
do {
rc = DosOpen(pipename,&hServer, &action, 0,
FILE_NORMAL, FILE_OPEN,
OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYWRITE,
(PEAOP2)NULL);
if(rc == 0) break;
if (try >=10) {
PRMSG(1,"Os2OpenClient: Open server pipe %s failed, rc=%d\n",
pipename,rc,0 );
PRMSG(1,"\tProbable causes: either the XServer is not running, or has not started properly,\n",
0,0,0 );
PRMSG(1,"\tor the DISPLAY variable is set incorrectly.\n",
0,0,0 );
xfree(ciptr);
return NULL;
}
try ++;
DosSleep(500);
} while (rc != 0);
/* OK, now we are talking to the server. Generate a unique pipe name and pass it to
* the server. Make the pipe and wait for server to connect */
sprintf(clientname,"\\PIPE\\X\\%d.%d",getpid(),unique_id++);
rc = DosCreateNPipe (clientname, &hfd,
NP_NOINHERIT | NP_ACCESS_DUPLEX,
1 | NP_NOWAIT | NP_TYPE_BYTE | NP_READMODE_BYTE,
16384, 16384, 0);
if (rc != 0){
PRMSG(1, "Os2OpenClient: Unable to create pipe %s\n", pipename,0,0 );
DosClose(hfd);
pipe_len=0;
DosWrite(hServer,&pipe_len,1,&byteWritten);
DosClose(hServer);
xfree(ciptr);
return(NULL);
}
/* Connect to the pipe. */
rc = DosConnectNPipe (hfd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2OpenClient: Unable to connect to pipe %s\n", pipename,0,0 );
DosClose (hfd);
DosClose(hServer);
xfree(ciptr);
return (NULL);
}
/* Now write name to server on hServer */
server_string[0]=(char) strlen(clientname)+1;
strcpy(&server_string[1],clientname);
rc = DosWrite(hServer,server_string,(ULONG)server_string[0]+1,&byteWritten);
if(rc != 0){ /* Could not write to server pipe? */
PRMSG(1, "Os2OpenClient: Error writing to server pipe, handle=%d, rc=%d, w=%d\n",
hServer,rc,byteWritten );
DosClose(hServer);
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
PRMSG (5, "Os2OpenCLient: Wrote pipename %s to server; len %d written %d \n",
&server_string[1],server_string[0]+1,byteWritten);
/* The server will respond by opening the pipe. Wait for that for 30 secs */
i=0;
DosSleep(50); /* Give it time to catch up but minimize race condition*/
rc = DosConnectNPipe(hfd);
while((rc == ERROR_PIPE_NOT_CONNECTED)&&(i++<60)) {
DosSleep(500);
rc = DosConnectNPipe(hfd);
}
if(rc != 0){ /* Server has not responded! */
PRMSG(1, "Os2OpenClient: Timeout on wait for server response, handle=%d, rc=%d\n",hServer,rc,0 );
PRMSG(1, "\tProbable cause: the XServer has exited or crashed while the connection was being established\n",0,0,0 );
PRMSG(1, "\tor the XServer is too busy to respond.\n",0,0,0 );
DosClose(hServer);
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
/* OK, the server has connected! Fill-in the info and return */
DosClose(hServer);
/* Last check: make sure client is connected! */
rc = DosQueryNPHState(hfd,&State);
if(rc != 0){ /* Client is not connected! */
PRMSG(1, "Os2OpenClient: Client pipe does not appear connected. rc=%d, h=%d\n",rc,hfd,0 );
PRMSG(1, "\tProbable cause: the XServer has just exited.\n",0,0,0 );
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
namelen=sizeof(struct sockaddr);
if ((ciptr->addr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2OpenClient: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
ciptr->addrlen = namelen;
((struct sockaddr *)ciptr->addr)->sa_family = AF_UNIX;
strcpy(((struct sockaddr *)ciptr->addr)->sa_data, "local");
if ((ciptr->peeraddr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2OpenCLient: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hfd);
xfree(ciptr->addr);
xfree(ciptr);
return(NULL);
}
ciptr->peeraddrlen = namelen;
((struct sockaddr *)ciptr->peeraddr)->sa_family = AF_UNIX;
strcpy (((struct sockaddr *)ciptr->peeraddr)->sa_data,"local");
PRMSG (5, "Os2OpenCLient: Filled in struct: len %d %d name %s\n",
ciptr->addrlen,ciptr->peeraddrlen,((struct sockaddr *)ciptr->peeraddr)->sa_data);
ciptr->index=hfd;
ciptr->family=AF_UNIX;
if((ciptr->fd=_imphandle(hfd))<0){
PRMSG(1, "Os2OpenClient: Could not import the pipe handle into EMX\n",0,0,0 );
PRMSG(1, "\tProbable cause: EMX has run out of free file handles.\n",0,0,0 );
DosClose(hfd);
xfree(ciptr->addr);
xfree(ciptr->peeraddr);
xfree(ciptr);
return(NULL);
}
PRMSG(5, "Os2OpenClient: pipe handle %d EMX handle %d\n",ciptr->index,ciptr->fd,0 );
fcntl(ciptr->fd,F_SETFL,O_NDELAY);
fcntl(ciptr->fd,F_SETFD,FD_CLOEXEC);
return ciptr;
}
#endif /* TRANS_CLIENT */
#ifdef TRANS_SERVER
static XtransConnInfo
TRANS(Os2OpenServer)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
APIRET rc;
HFILE hfd;
ULONG action;
char pipename[256];
struct sockaddr *addr_name;
XtransConnInfo ciptr;
int namelen;
#ifdef XSERV_t
if (! init_server_pipes()) return(NULL);
#endif
PRMSG(2,"Os2OpenServer(%s,%s,%s)\n",protocol,host,port);
if( (ciptr=(XtransConnInfo)xcalloc(1,sizeof(struct _XtransConnInfo))) == NULL )
{
PRMSG(1,"Os2OpenServer: xcalloc(1,%d) failed\n",
sizeof(struct _XtransConnInfo),0,0 );
return NULL;
}
if (port && *port ) {
if( *port == '/' ) { /* A full pathname */
(void) sprintf(pipename, "\\PIPE\\X\\%s", port);
} else {
(void) sprintf(pipename, "%s%s", "\\PIPE\\X\\xf86.", port);
}
} else {
(void) sprintf(pipename, "\\PIPE\\X\\xfree86");
}
PRMSG(5, "Os2OpenServer: Creating pipe %s\n",pipename, 0,0 );
rc = DosCreateNPipe (pipename, &hfd,
NP_NOINHERIT | NP_ACCESS_INBOUND,
1 | NP_NOWAIT | NP_TYPE_BYTE | NP_READMODE_BYTE,
0, 8192, 0);
if (rc != 0){
PRMSG(1, "Os2OpenServer: Unable to create pipe %s, rc=%d\n", pipename,rc,0 );
PRMSG(1, "\tProbable cause: there is already another XServer running on display :%s\n",port,0,0 );
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
/* Connect to the pipe. */
rc = DosConnectNPipe (hfd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2OpenServer: Unable to connect to pipe %s\n", pipename,0,0 );
DosClose (hfd);
xfree(ciptr);
return (NULL);
}
/* Pipe is now connected and waiting for client connect */
/*** Put in info ***/
namelen=sizeof(struct sockaddr);
if ((ciptr->addr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2OpenServer: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hfd);
xfree(ciptr);
return(NULL);
}
ciptr->addrlen = namelen;
((struct sockaddr *)ciptr->addr)->sa_family = AF_UNIX;
strcpy (((struct sockaddr *)ciptr->addr)->sa_data, "local");
if ((ciptr->peeraddr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2OpenServer: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hfd);
xfree(ciptr->addr);
xfree(ciptr);
return(NULL);
}
ciptr->peeraddrlen = namelen;
((struct sockaddr *)ciptr->peeraddr)->sa_family = AF_UNIX;
strcpy(((struct sockaddr *)ciptr->peeraddr)->sa_data,"local");
PRMSG (5, "Os2OpenServer: Filled in struct: len %d %d name %s\n",
ciptr->addrlen,ciptr->peeraddrlen,((struct sockaddr *)ciptr->peeraddr)->sa_data);
ciptr->index=hfd; /* Save this for later use in this unused member of struct */
ciptr->flags=1; /* Listener */
ciptr->family=AF_UNIX;
if((ciptr->fd=_imphandle(hfd))<0){
DosClose(hfd);
xfree(ciptr->addr);
xfree(ciptr->peeraddr);
xfree(ciptr);
return(NULL);
}
PRMSG(5, "Os2OpenServer: Pipe handle %d EMX handle %d",ciptr->index,ciptr->fd,0 );
#ifdef XSERV_t
/* Attach the pipe sem to the pipe. Use handle index as key */
rc = DosSetNPipeSem(ciptr->fd, (HSEM)hPipeSem, ciptr->fd);
if (rc){
PRMSG(1, "Os2OpenCOTSServer: Could not attach sem %d to pipe %d, rc=%d\n",
hPipeSem,ciptr->fd,rc);
DosClose(ciptr->fd);
xfree(ciptr->addr);
xfree(ciptr->peeraddr);
xfree(ciptr);
return(NULL);
}
#endif
fcntl(ciptr->fd,F_SETFL,O_NDELAY);
fcntl(ciptr->fd,F_SETFD,FD_CLOEXEC);
return(ciptr);
}
#endif /* TRANS_SERVER */
#ifdef TRANS_CLIENT
static XtransConnInfo
TRANS(Os2OpenCLTSClient)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
PRMSG(2,"Os2OpenCLTSClient(%s,%s,%s)\n",protocol,host,port);
return TRANS(Os2OpenClient)(thistrans, protocol, host, port);
}
#endif /* TRANS_CLIENT */
#ifdef TRANS_CLIENT
static XtransConnInfo
TRANS(Os2OpenCOTSClient)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
PRMSG(2,"Os2OpenCOTSClient(%s,%s,%s)\n",protocol,host,port);
return TRANS(Os2OpenClient)(thistrans, protocol, host, port);
}
#endif /* TRANS_CLIENT */
#ifdef TRANS_SERVER
static XtransConnInfo
TRANS(Os2OpenCLTSServer)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
PRMSG(2,"Os2OpenCLTSServer(%s,%s,%s)\n",protocol,host,port);
return TRANS(Os2OpenServer)(thistrans, protocol, host, port);
}
#endif /* TRANS_SERVER */
#ifdef TRANS_SERVER
static XtransConnInfo
TRANS(Os2OpenCOTSServer)(Xtransport *thistrans, char *protocol,
char *host, char *port)
{
PRMSG(2,"Os2OpenCOTSServer(%s,%s,%s)\n",protocol,host,port);
return TRANS(Os2OpenServer)(thistrans, protocol, host, port);
}
#endif /* TRANS_SERVER */
#ifdef TRANS_REOPEN
static XtransConnInfo
TRANS(Os2ReopenCOTSServer)(Xtransport *thistrans, int fd, char *port)
{
XtransConnInfo ciptr;
char addr_name[256];
int namelen;
PRMSG(2,"Os2ReopenCOTSServer(%d,%s)\n", fd, port, 0);
if( (ciptr=(XtransConnInfo)xcalloc(1,sizeof(struct _XtransConnInfo))) == NULL )
{
PRMSG(1,"Os2ReopenCOTSServer: xcalloc(1,%d) failed\n",
sizeof(struct _XtransConnInfo),0,0 );
return NULL;
}
strcpy(addr_name,"local");
namelen=sizeof(addr_name);
if ((ciptr->addr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2ReopenCOTSServer: Can't allocate space for the addr\n",
0, 0, 0);
xfree(ciptr);
return(NULL);
}
ciptr->addrlen = namelen;
memcpy (ciptr->addr, addr_name, ciptr->addrlen);
if ((ciptr->peeraddr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2ReopenCOTSServer: Can't allocate space for the addr\n",
0, 0, 0);
xfree(ciptr);
return(NULL);
}
ciptr->peeraddrlen = namelen;
memcpy (ciptr->peeraddr,addr_name, ciptr->addrlen);
ciptr->fd = fd;
ciptr->family=AF_UNIX;
ciptr->flags=1;
PRMSG(1,"Os2ReopenCOTSServer: Filled-in info for handle %d on port %s.\n", fd, port, 0);
return(ciptr);
}
static XtransConnInfo
TRANS(Os2ReopenCLTSServer)(Xtransport *thistrans, int fd, char *port)
{
PRMSG(2,"Os2ReopenCLTSServer(%d,%s)\n", fd, port, 0);
return TRANS(Os2ReopenCOTSServer)(thistrans, fd, port);
}
#endif
static
TRANS(Os2SetOption)(XtransConnInfo ciptr, int option, int arg)
{
PRMSG(2,"Os2SetOption(%d,%d,%d)\n",ciptr->fd,option,arg);
return -1;
}
#ifdef TRANS_SERVER
static
TRANS(Os2CreateListener)(XtransConnInfo ciptr, char *port, unsigned int flags)
{
PRMSG(2,"Os2CreateListener(%x->%d,%s)\n",ciptr,ciptr->fd,port);
return 0;
}
static XtransConnInfo
TRANS(Os2Accept)(XtransConnInfo ciptr, int *status)
{
XtransConnInfo newciptr;
HFILE hClient;
unsigned char length;
ULONG action;
char clientname[256];
struct sockaddr *addr_name;
int in,namelen;
APIRET rc;
PRMSG(2,"Os2Accept(%x->%d)\n", ciptr, ciptr->fd,0);
if( (newciptr=(XtransConnInfo)xcalloc(1,sizeof(struct _XtransConnInfo)))==NULL )
{
PRMSG(1,"Os2Accept: xcalloc(1,%d) failed\n",
sizeof(struct _XtransConnInfo),0,0 );
*status = TRANS_ACCEPT_BAD_MALLOC;
return NULL;
}
/* Read in length of client pipe name. If fails, then reset server pipe */
if((in=read(ciptr->fd,&length,1))<=0){
PRMSG(2,"Os2Accept: Error reading incoming connection, in=%d, error=%d\n",
in,errno,0 );
*status = TRANS_ACCEPT_MISC_ERROR;
xfree(newciptr);
rc = DosDisConnectNPipe(ciptr->fd);
rc = DosConnectNPipe (ciptr->fd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2Accept: Unable to reconnect server pipe %d\n", ciptr->fd,0,0 );
}
return NULL;
}
PRMSG(5, "Os2Accept: Bytes to read for name: %d\n",length,0,0 );
/* Check length for valid length ?? */
/* Now read in length bytes from pipe for client pipe name */
if((in=read(ciptr->fd,clientname,length))<=0){
PRMSG(2,"Os2Accept: Error reading incoming connection, in=%d, error=%d\n",
in,errno,0 );
*status = TRANS_ACCEPT_MISC_ERROR;
xfree(newciptr);
rc = DosDisConnectNPipe(ciptr->fd);
rc = DosConnectNPipe (ciptr->fd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2Accept: Unable to reconnect server pipe %d\n", ciptr->fd,0,0 );
}
return NULL;
}
clientname[length]='\0';
PRMSG(5, "Os2Accept: Server name %s length %d\n",clientname,length,0 );
/* Now we have the client pipe name. Open it with DosOpen */
rc = DosOpen(clientname,&hClient, &action, 0,
FILE_NORMAL, FILE_OPEN,
OPEN_FLAGS_NOINHERIT | OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE,
(PEAOP2)NULL);
PRMSG(5, "Os2Accept: Open pipe %s, handle = %d, rc=%d\n",clientname,hClient,rc );
if (rc) {
PRMSG(1,"Os2Accept: Open pipe %s to client failed, rc=%d\n",
clientname,rc,0 );
PRMSG(1, "\tProbable cause: the client has exited or timed-out.\n",0,0,0 );
xfree(newciptr);
rc = DosDisConnectNPipe(ciptr->fd);
rc = DosConnectNPipe (ciptr->fd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2Accept: Unable to reconnect server pipe %d\n", ciptr->fd,0,0 );
}
return NULL;
}
rc = DosSetNPHState (hClient, NP_NOWAIT | NP_READMODE_BYTE);
if (rc != 0)
{
PRMSG(1,"Os2Accept: Could not set pipe %s to non-blocking mode, rc=%d\n",
hClient,rc,0 );
xfree(newciptr);
rc = DosDisConnectNPipe(ciptr->fd);
rc = DosConnectNPipe (ciptr->fd);
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2Accept: Unable to reconnect server pipe %d\n", ciptr->fd,0,0 );
}
return NULL;
}
/* OK, we seem to be well connected to client. Now disconnect server pipe and put again in listen */
rc = DosDisConnectNPipe(ciptr->fd);
rc = DosConnectNPipe (ciptr->fd);
PRMSG(5, "Os2Accept: Reconnecting server pipe %d, rc = %d\n",ciptr->fd,rc,0 );
if (rc != 0 && rc != ERROR_PIPE_NOT_CONNECTED)
{
PRMSG(1, "Os2Accept: Unable to reconnect server pipe %d\n", ciptr->fd,0,0 );
} /* Consider this non-fatal for present connection */
/* And finally fill-in info in newciptr */
namelen=sizeof(struct sockaddr);
if ((newciptr->addr = (char *) xalloc (namelen)) == NULL)
{
PRMSG (1, "Os2Accept: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hClient);
xfree(newciptr);
return(NULL);
}
newciptr->addrlen = namelen;
((struct sockaddr *)newciptr->addr)->sa_family = AF_UNIX;
strcpy (((struct sockaddr *)newciptr->addr)->sa_data, "local");
if ((newciptr->peeraddr = (char *) xalloc (namelen)) == NULL)
{