/* sets the given handle to the non-blocking mode. The value may change.
* async_info CAN be used to add the handle to the internal list of watched
* handles.
*/
static void Os2_unblock_handle( int *handle, void *async_info )
{
AsyncInfo *ai = async_info;
int i;
ULONG rc;
if (*handle == -1)
return ;
for (i = 0;i < 3;i++)
{
if ((ai->hdl[i] != *handle) && (ai->hdl[i] == -1))
{
ai->hdl[i] = *handle;
rc = DosSetNPipeSem((HFILE) *handle, (HSEM) ai->sem, 0);
if (rc != NO_ERROR)
ai->hdl[i] = *handle = -2;
/* This shall produce an error. -1 isn't a good idea: special
* meaning
*/
return;
}
}
}
/* close acts like close() but closes a handle returned by
* open_subprocess_connection.
* async_info MAY be used to delete the handle from the internal list of
* watched handles.
*/
static int Os2_close(int handle, void *async_info)
{
AsyncInfo *ai = async_info;
int i;
if ((handle != -1) && (ai != NULL))
for (i = 0;i < 3;i++)
if ((int) ai->hdl[i] == handle)
DosSetNPipeSem((HPIPE) handle, NULLHANDLE, 0);
return(DosClose((HFILE) handle));
}
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);
}
APR_DECLARE(apr_status_t) apr_file_pipe_create(apr_file_t **in, apr_file_t **out, apr_pool_t *pool)
{
ULONG filedes[2];
ULONG rc, action;
static int id = 0;
char pipename[50];
sprintf(pipename, "/pipe/%d.%d", getpid(), id++);
rc = DosCreateNPipe(pipename, filedes, NP_ACCESS_INBOUND, NP_NOWAIT|1, 4096, 4096, 0);
if (rc)
return APR_FROM_OS_ERROR(rc);
rc = DosConnectNPipe(filedes[0]);
if (rc && rc != ERROR_PIPE_NOT_CONNECTED) {
DosClose(filedes[0]);
return APR_FROM_OS_ERROR(rc);
}
rc = DosOpen (pipename, filedes+1, &action, 0, FILE_NORMAL,
OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,
OPEN_ACCESS_WRITEONLY | OPEN_SHARE_DENYREADWRITE,
NULL);
if (rc) {
DosClose(filedes[0]);
return APR_FROM_OS_ERROR(rc);
}
(*in) = (apr_file_t *)apr_palloc(pool, sizeof(apr_file_t));
rc = DosCreateEventSem(NULL, &(*in)->pipeSem, DC_SEM_SHARED, FALSE);
if (rc) {
DosClose(filedes[0]);
DosClose(filedes[1]);
return APR_FROM_OS_ERROR(rc);
}
rc = DosSetNPipeSem(filedes[0], (HSEM)(*in)->pipeSem, 1);
if (!rc) {
rc = DosSetNPHState(filedes[0], NP_WAIT);
}
if (rc) {
DosClose(filedes[0]);
DosClose(filedes[1]);
DosCloseEventSem((*in)->pipeSem);
return APR_FROM_OS_ERROR(rc);
}
(*in)->pool = pool;
(*in)->filedes = filedes[0];
(*in)->fname = apr_pstrdup(pool, pipename);
(*in)->isopen = TRUE;
(*in)->buffered = FALSE;
(*in)->flags = APR_FOPEN_READ;
(*in)->pipe = 1;
(*in)->timeout = -1;
(*in)->blocking = BLK_ON;
(*in)->ungetchar = -1;
apr_pool_cleanup_register(pool, *in, apr_file_cleanup, apr_pool_cleanup_null);
(*out) = (apr_file_t *)apr_palloc(pool, sizeof(apr_file_t));
rc = DosCreateEventSem(NULL, &(*out)->pipeSem, DC_SEM_SHARED, FALSE);
if (rc) {
DosClose(filedes[0]);
DosClose(filedes[1]);
DosCloseEventSem((*in)->pipeSem);
return APR_FROM_OS_ERROR(rc);
}
rc = DosSetNPipeSem(filedes[1], (HSEM)(*out)->pipeSem, 1);
if (rc) {
DosClose(filedes[0]);
DosClose(filedes[1]);
DosCloseEventSem((*in)->pipeSem);
DosCloseEventSem((*out)->pipeSem);
return APR_FROM_OS_ERROR(rc);
}
(*out)->pool = pool;
(*out)->filedes = filedes[1];
(*out)->fname = apr_pstrdup(pool, pipename);
(*out)->isopen = TRUE;
(*out)->buffered = FALSE;
(*out)->flags = APR_FOPEN_WRITE;
(*out)->pipe = 1;
(*out)->timeout = -1;
(*out)->blocking = BLK_ON;
(*out)->ungetchar = -1;
apr_pool_cleanup_register(pool, *out, apr_file_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
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)
{
PRMSG (1, "Os2Accept: Can't allocate space for the addr\n",
0, 0, 0);
DosClose(hClient);
xfree(ciptr->addr);
xfree(newciptr);
return(NULL);
}
newciptr->peeraddrlen = namelen;
((struct sockaddr *)newciptr->peeraddr)->sa_family = AF_UNIX;
strcpy (((struct sockaddr *)newciptr->peeraddr)->sa_data, "local");
PRMSG (5, "Os2Accept: Filled in struct: len %d %d name %s\n",
newciptr->addrlen,newciptr->peeraddrlen,newciptr->peeraddr);
newciptr->index=hClient;
newciptr->family=AF_UNIX;
if((newciptr->fd=_imphandle(hClient))<0){
PRMSG(1,"Os2Accept: Could not import pipe %d into EMX, errno=%d\n",
hClient,errno,0 );
PRMSG(1, "\tProbable cause: EMX has run out of file handles.\n",0,0,0 );
DosClose(hClient);
xfree(newciptr->addr);
xfree(newciptr->peeraddr);
xfree(newciptr);
return(NULL);
}
PRMSG(5, "Os2Accept: Pipe handle %d EMX handle %d",newciptr->index,newciptr->fd,0 );
#ifdef XSERV_t
/* Attach the pipe sem to the pipe. Use handle index as key */
rc = DosSetNPipeSem(newciptr->fd, (HSEM)hPipeSem, newciptr->fd);
if (rc){
PRMSG(1, "Os2OpenCOTSServer: Could not attach sem %d to pipe %d, rc=%d\n",
hPipeSem,newciptr->fd,rc);
DosClose(newciptr->fd);
xfree(newciptr->addr);
xfree(newciptr->peeraddr);
xfree(newciptr);
return(NULL);
}
#endif
fcntl(ciptr->fd,F_SETFL,O_NDELAY);
fcntl(ciptr->fd,F_SETFD,FD_CLOEXEC);
*status=0;
return newciptr;
}
