qbit/xenocara
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
a568a2f60d
xenocara/app/xdm/choose.c
matthieu 616b6f15ab Importing from X.Org 7.2RC2
2006-11-25 20:07:29 +00:00

552 lines
12 KiB
C
Raw Blame History

/*
* $Xorg: choose.c,v 1.5 2001/02/09 02:05:40 xorgcvs Exp $
*
Copyright 1990, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
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 THE
OPEN GROUP 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 The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
*
* Author: Keith Packard, MIT X Consortium
*/
/* $XFree86: xc/programs/xdm/choose.c,v 3.16tsi Exp $ */
/*
* choose.c
*
* xdm interface to chooser program
*/
#include "dm.h"
#include "dm_error.h"
#ifdef XDMCP
#include <X11/X.h>
#include <sys/types.h>
#include "dm_socket.h"
#include <arpa/inet.h>
#ifndef X_NO_SYS_UN
#ifndef Lynx
#include <sys/un.h>
#else
#include <un.h>
#endif
#endif
#include <ctype.h>
#include <errno.h>
#if defined(STREAMSCONN)
# include <tiuser.h>
#endif
#include <time.h>
#define Time_t time_t
static int
FormatBytes (
unsigned char *data,
int length,
char *buf,
int buflen)
{
int i;
static char HexChars[] = "0123456789abcdef";
if (buflen < length * 2 + 1)
return 0;
for (i = 0; i < length; i++)
{
*buf++ = HexChars[(data[i] >> 4) & 0xf];
*buf++ = HexChars[(data[i]) & 0xf];
}
*buf++ = '\0';
return 1;
}
static int
FormatARRAY8 (
ARRAY8Ptr a,
char *buf,
int buflen)
{
return FormatBytes (a->data, a->length, buf, buflen);
}
/* Converts an Internet address in ARRAY8 format to a string in
familiar dotted address notation, e.g., "18.24.0.11"
Returns 1 if successful, 0 if not.
*/
static int
ARRAY8ToDottedDecimal (
ARRAY8Ptr a,
char *buf,
int buflen)
{
if (a->length != 4 || buflen < 20)
return 0;
sprintf(buf, "%d.%d.%d.%d",
a->data[0], a->data[1], a->data[2], a->data[3]);
return 1;
}
typedef struct _IndirectUsers {
struct _IndirectUsers *next;
ARRAY8 client;
CARD16 connectionType;
} IndirectUsersRec, *IndirectUsersPtr;
static IndirectUsersPtr indirectUsers;
int
RememberIndirectClient (
ARRAY8Ptr clientAddress,
CARD16 connectionType)
{
IndirectUsersPtr i;
for (i = indirectUsers; i; i = i->next)
if (XdmcpARRAY8Equal (clientAddress, &i->client) &&
connectionType == i->connectionType)
return 1;
i = (IndirectUsersPtr) malloc (sizeof (IndirectUsersRec));
if (!XdmcpCopyARRAY8 (clientAddress, &i->client))
{
free ((char *) i);
return 0;
}
i->connectionType = connectionType;
i->next = indirectUsers;
indirectUsers = i;
return 1;
}
void
ForgetIndirectClient (
ARRAY8Ptr clientAddress,
CARD16 connectionType)
{
IndirectUsersPtr i, prev;
prev = 0;
for (i = indirectUsers; i; i = i->next)
{
if (XdmcpARRAY8Equal (clientAddress, &i->client) &&
connectionType == i->connectionType)
{
if (prev)
prev->next = i->next;
else
indirectUsers = i->next;
XdmcpDisposeARRAY8 (&i->client);
free ((char *) i);
break;
}
prev = i;
}
}
int
IsIndirectClient (
ARRAY8Ptr clientAddress,
CARD16 connectionType)
{
IndirectUsersPtr i;
for (i = indirectUsers; i; i = i->next)
if (XdmcpARRAY8Equal (clientAddress, &i->client) &&
connectionType == i->connectionType)
return 1;
return 0;
}
static int
FormatChooserArgument (char *buf, int len)
{
unsigned char addr_buf[1024];
int addr_len = sizeof (addr_buf);
unsigned char result_buf[1024];
int result_len = 0;
int netfamily;
if (GetChooserAddr ((char *)addr_buf, &addr_len) == -1)
{
LogError ("Cannot get return address for chooser socket\n");
Debug ("Cannot get chooser socket address\n");
return 0;
}
netfamily = NetaddrFamily((XdmcpNetaddr)addr_buf);
switch (netfamily) {
case AF_INET:
#if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
#endif
{
char *port;
int portlen;
ARRAY8Ptr localAddress = getLocalAddress ();
#if defined(IPv6) && defined(AF_INET6)
if (localAddress->length == 16)
netfamily = AF_INET6;
else
netfamily = AF_INET;
#endif
port = NetaddrPort((XdmcpNetaddr)addr_buf, &portlen);
result_buf[0] = netfamily >> 8;
result_buf[1] = netfamily & 0xFF;
result_buf[2] = port[0];
result_buf[3] = port[1];
memmove( (char *)result_buf+4, (char *)localAddress->data,
localAddress->length);
result_len = 4 + localAddress->length;
}
break;
#ifdef AF_DECnet
case AF_DECnet:
break;
#endif
default:
Debug ("Chooser family %d isn't known\n", netfamily);
return 0;
}
return FormatBytes (result_buf, result_len, buf, len);
}
typedef struct _Choices {
struct _Choices *next;
ARRAY8 client;
CARD16 connectionType;
ARRAY8 choice;
Time_t time;
} ChoiceRec, *ChoicePtr;
static ChoicePtr choices;
ARRAY8Ptr
IndirectChoice (
ARRAY8Ptr clientAddress,
CARD16 connectionType)
{
ChoicePtr c, next, prev;
Time_t now;
now = time ((Time_t*)0);
prev = 0;
for (c = choices; c; c = next)
{
next = c->next;
Debug ("Choice checking timeout: %ld >? %d\n",
(long)(now - c->time), choiceTimeout);
if (now - c->time > (Time_t)choiceTimeout)
{
Debug ("Timeout choice %ld > %d\n",
(long)(now - c->time), choiceTimeout);
if (prev)
prev->next = next;
else
choices = next;
XdmcpDisposeARRAY8 (&c->client);
XdmcpDisposeARRAY8 (&c->choice);
free ((char *) c);
}
else
{
if (XdmcpARRAY8Equal (clientAddress, &c->client) &&
connectionType == c->connectionType)
return &c->choice;
prev = c;
}
}
return 0;
}
static int
RegisterIndirectChoice (
ARRAY8Ptr clientAddress,
CARD16 connectionType,
ARRAY8Ptr choice)
{
ChoicePtr c;
int insert;
#if 0
int found = 0;
#endif
Debug ("Got indirect choice back\n");
for (c = choices; c; c = c->next) {
if (XdmcpARRAY8Equal (clientAddress, &c->client) &&
connectionType == c->connectionType) {
#if 0
found = 1;
#endif
break;
}
}
#if 0
if (!found)
return 0;
#endif
insert = 0;
if (!c)
{
c = (ChoicePtr) malloc (sizeof (ChoiceRec));
insert = 1;
if (!c)
return 0;
c->connectionType = connectionType;
if (!XdmcpCopyARRAY8 (clientAddress, &c->client))
{
free ((char *) c);
return 0;
}
}
else
{
XdmcpDisposeARRAY8 (&c->choice);
}
if (!XdmcpCopyARRAY8 (choice, &c->choice))
{
XdmcpDisposeARRAY8 (&c->client);
free ((char *) c);
return 0;
}
if (insert)
{
c->next = choices;
choices = c;
}
c->time = time (0);
return 1;
}
#ifdef notdef
static
RemoveIndirectChoice (clientAddress, connectionType)
ARRAY8Ptr clientAddress;
CARD16 connectionType;
{
ChoicePtr c, prev;
prev = 0;
for (c = choices; c; c = c->next)
{
if (XdmcpARRAY8Equal (clientAddress, &c->client) &&
connectionType == c->connectionType)
{
if (prev)
prev->next = c->next;
else
choices = c->next;
XdmcpDisposeARRAY8 (&c->client);
XdmcpDisposeARRAY8 (&c->choice);
free ((char *) c);
return;
}
prev = c;
}
}
#endif
/*ARGSUSED*/
static void
AddChooserHost (
CARD16 connectionType,
ARRAY8Ptr addr,
char *closure)
{
char ***argp;
char hostbuf[1024];
argp = (char ***) closure;
if (addr->length == strlen ("BROADCAST") &&
!strncmp ((char *)addr->data, "BROADCAST", addr->length))
{
*argp = parseArgs (*argp, "BROADCAST");
}
#if defined(IPv6) && defined(AF_INET6)
else if ( (addr->length == 16) &&
(inet_ntop(AF_INET6, addr->data, hostbuf, sizeof(hostbuf))))
{
*argp = parseArgs (*argp, hostbuf);
}
#endif
else if (ARRAY8ToDottedDecimal (addr, hostbuf, sizeof (hostbuf)))
{
*argp = parseArgs (*argp, hostbuf);
}
}
void
ProcessChooserSocket (int fd)
{
int client_fd;
char buf[1024];
int len;
XdmcpBuffer buffer;
ARRAY8 clientAddress;
CARD16 connectionType;
ARRAY8 choice;
#if defined(STREAMSCONN)
struct t_call *call;
int flags=0;
#endif
Debug ("Process chooser socket\n");
len = sizeof (buf);
#if defined(STREAMSCONN)
call = (struct t_call *)t_alloc( fd, T_CALL, T_ALL );
if( call == NULL )
{
t_error( "ProcessChooserSocket: t_alloc failed" );
LogError ("Cannot setup to listen on chooser connection\n");
return;
}
if( t_listen( fd, call ) < 0 )
{
t_error( "ProcessChooserSocket: t_listen failed" );
t_free( (char *)call, T_CALL );
LogError ("Cannot listen on chooser connection\n");
return;
}
client_fd = t_open ("/dev/tcp", O_RDWR, NULL);
if (client_fd == -1)
{
t_error( "ProcessChooserSocket: t_open failed" );
t_free( (char *)call, T_CALL );
LogError ("Cannot open new chooser connection\n");
return;
}
if( t_bind( client_fd, NULL, NULL ) < 0 )
{
t_error( "ProcessChooserSocket: t_bind failed" );
t_free( (char *)call, T_CALL );
LogError ("Cannot bind new chooser connection\n");
t_close (client_fd);
return;
}
if( t_accept (fd, client_fd, call) < 0 )
{
t_error( "ProcessChooserSocket: t_accept failed" );
LogError ("Cannot accept chooser connection\n");
t_free( (char *)call, T_CALL );
t_unbind (client_fd);
t_close (client_fd);
return;
}
#else
client_fd = accept (fd, (struct sockaddr *)buf, (void *)&len);
if (client_fd == -1)
{
LogError ("Cannot accept chooser connection\n");
return;
}
#endif
Debug ("Accepted %d\n", client_fd);
#if defined(STREAMSCONN)
len = t_rcv (client_fd, buf, sizeof (buf),&flags);
#else
len = read (client_fd, buf, sizeof (buf));
#endif
Debug ("Read returns %d\n", len);
if (len > 0)
{
buffer.data = (BYTE *) buf;
buffer.size = sizeof (buf);
buffer.count = len;
buffer.pointer = 0;
clientAddress.data = 0;
clientAddress.length = 0;
choice.data = 0;
choice.length = 0;
if (XdmcpReadARRAY8 (&buffer, &clientAddress)) {
if (XdmcpReadCARD16 (&buffer, &connectionType)) {
if (XdmcpReadARRAY8 (&buffer, &choice)) {
Debug ("Read from chooser succesfully\n");
RegisterIndirectChoice (&clientAddress, connectionType, &choice);
XdmcpDisposeARRAY8 (&choice);
} else {
LogError ("Invalid choice response length %d\n", len);
}
} else {
LogError ("Invalid choice response length %d\n", len);
}
XdmcpDisposeARRAY8 (&clientAddress);
} else {
LogError ("Invalid choice response length %d\n", len);
}
}
else
{
LogError ("Choice response read error: %s\n", strerror(errno));
}
#if defined(STREAMSCONN)
t_unbind (client_fd);
t_free( (char *)call, T_CALL );
t_close (client_fd);
#else
close (client_fd);
#endif
}
void
RunChooser (struct display *d)
{
char **args;
char buf[1024];
char **env;
Debug ("RunChooser %s\n", d->name);
#ifndef HAS_SETPROCTITLE
SetTitle (d->name, "chooser", (char *) 0);
#else
setproctitle("chooser %s", d->name);
#endif
LoadXloginResources (d);
args = parseArgs ((char **) 0, d->chooser);
strcpy (buf, "-xdmaddress ");
if (FormatChooserArgument (buf + strlen (buf), sizeof (buf) - strlen (buf)))
args = parseArgs (args, buf);
strcpy (buf, "-clientaddress ");
if (FormatARRAY8 (&d->clientAddr, buf + strlen (buf), sizeof (buf) - strlen (buf)))
args = parseArgs (args, buf);
sprintf (buf, "-connectionType %d", d->connectionType);
args = parseArgs (args, buf);
ForEachChooserHost (&d->clientAddr, d->connectionType, AddChooserHost,
(char *) &args);
env = systemEnv (d, (char *) 0, (char *) 0);
Debug ("Running %s\n", args[0]);
execute (args, env);
Debug ("Couldn't run %s\n", args[0]);
LogError ("Cannot execute %s\n", args[0]);
exit (REMANAGE_DISPLAY);
}
#endif /* XDMCP */
Reference in New Issue View Git Blame Copy Permalink