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xenocara/app/xdm/chooser.c
matthieu 21c33a1b92 Update to xdm 1.1.9
2010-03-28 09:33:02 +00:00

1382 lines
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/*
*
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
*/
/*
* Chooser - display a menu of names and let the user select one
*/
/*
* Layout:
*
* +--------------------------------------------------+
* | +------------------+ |
* | | Label | |
* | +------------------+ |
* | +-+--------------+ |
* | |^| name-1 | |
* | ||| name-2 | |
* | |v| name-3 | |
* | | | name-4 | |
* | | | name-5 | |
* | | | name-6 | |
* | +----------------+ |
* | cancel accept ping |
* +--------------------------------------------------+
*/
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/Xatom.h>
#include <X11/Xaw/Paned.h>
#include <X11/Xaw/Label.h>
#include <X11/Xaw/Viewport.h>
#include <X11/Xaw/List.h>
#include <X11/Xaw/Box.h>
#include <X11/Xaw/Command.h>
#include "dm.h"
#include <X11/Xdmcp.h>
#include <sys/types.h>
#include <stdio.h>
#include <ctype.h>
#ifdef USE_XINERAMA
# include <X11/extensions/Xinerama.h>
#endif
#if defined(SVR4)
# include <sys/sockio.h>
#endif
#if defined(SVR4) && defined(PowerMAX_OS)
# include <sys/stropts.h>
#endif
#if defined(SYSV) && defined(i386)
# include <sys/stream.h>
# ifdef ISC
# include <sys/sioctl.h>
# include <sys/stropts.h>
# endif
#endif
#include "dm_socket.h"
#include <arpa/inet.h>
#include <sys/ioctl.h>
#ifdef STREAMSCONN
# ifdef WINTCP /* NCR with Wollongong TCP */
# include <netinet/ip.h>
# endif
# include <stropts.h>
# include <tiuser.h>
# include <netconfig.h>
# include <netdir.h>
#endif
#ifdef CSRG_BASED
# include <sys/param.h>
# if (BSD >= 199103)
# define VARIABLE_IFREQ
# endif
#endif
#ifdef XKB
# include <X11/extensions/XKBbells.h>
#endif
#define BROADCAST_HOSTNAME "BROADCAST"
#ifndef ishexdigit
# define ishexdigit(c) (isdigit(c) || ('a' <= (c) && (c) <= 'f'))
#endif
#ifdef hpux
# include <sys/utsname.h>
# ifdef HAS_IFREQ
# include <net/if.h>
# endif
#else
# ifdef __convex__
# include <sync/queue.h>
# include <sync/sema.h>
# endif
# include <net/if.h>
#endif /* hpux */
#include <netdb.h>
#include <X11/keysym.h>
static int FromHex (char *s, char *d, int len);
static int oldline;
static Widget toplevel, label, viewport, paned, list, box, cancel, acceptit, ping;
static void CvtStringToARRAY8(
XrmValuePtr args,
Cardinal *num_args,
XrmValuePtr fromVal,
XrmValuePtr toVal);
static struct _app_resources {
ARRAY8Ptr xdmAddress;
ARRAY8Ptr clientAddress;
int connectionType;
} app_resources;
#define offset(field) XtOffsetOf(struct _app_resources, field)
#define XtRARRAY8 "ARRAY8"
static XtResource resources[] = {
{"xdmAddress", "XdmAddress", XtRARRAY8, sizeof (ARRAY8Ptr),
offset (xdmAddress), XtRString, NULL },
{"clientAddress", "ClientAddress", XtRARRAY8, sizeof (ARRAY8Ptr),
offset (clientAddress), XtRString, NULL },
{"connectionType", "ConnectionType", XtRInt, sizeof (int),
offset (connectionType), XtRImmediate, (XtPointer) 0 }
};
#undef offset
static XrmOptionDescRec options[] = {
{ "-xdmaddress", "*xdmAddress", XrmoptionSepArg, NULL },
{ "-clientaddress", "*clientAddress", XrmoptionSepArg, NULL },
{ "-connectionType","*connectionType", XrmoptionSepArg, NULL },
};
typedef struct _hostAddr {
struct _hostAddr *next;
struct sockaddr *addr;
int addrlen;
xdmOpCode type;
} HostAddr;
static HostAddr *hostAddrdb;
typedef struct _hostName {
struct _hostName *next;
char *fullname;
int willing;
ARRAY8 hostname, status;
CARD16 connectionType;
ARRAY8 hostaddr;
} HostName;
static HostName *hostNamedb;
static int socketFD;
#if defined(IPv6) && defined(AF_INET6)
static int socket6FD;
#endif
static int pingTry;
#define PING_INTERVAL 2000
#define TRIES 3
static XdmcpBuffer directBuffer, broadcastBuffer;
static XdmcpBuffer buffer;
#if ((defined(SVR4) && !defined(sun) && !defined(__sgi) && !defined(NCR)) || defined(ISC)) && defined(SIOCGIFCONF)
/* Deal with different SIOCGIFCONF ioctl semantics on these OSs */
static int
ifioctl (int fd, int cmd, char *arg)
{
struct strioctl ioc;
int ret;
bzero((char *) &ioc, sizeof(ioc));
ioc.ic_cmd = cmd;
ioc.ic_timout = 0;
if (cmd == SIOCGIFCONF)
{
ioc.ic_len = ((struct ifconf *) arg)->ifc_len;
ioc.ic_dp = ((struct ifconf *) arg)->ifc_buf;
# ifdef ISC
/* SIOCGIFCONF is somewhat brain damaged on ISC. The argument
* buffer must contain the ifconf structure as header. Ifc_req
* is also not a pointer but a one element array of ifreq
* structures. On return this array is extended by enough
* ifreq fields to hold all interfaces. The return buffer length
* is placed in the buffer header.
*/
((struct ifconf *) ioc.ic_dp)->ifc_len =
ioc.ic_len - sizeof(struct ifconf);
# endif
}
else
{
ioc.ic_len = sizeof(struct ifreq);
ioc.ic_dp = arg;
}
ret = ioctl(fd, I_STR, (char *) &ioc);
if (ret >= 0 && cmd == SIOCGIFCONF)
# ifdef SVR4
((struct ifconf *) arg)->ifc_len = ioc.ic_len;
# endif
# ifdef ISC
{
((struct ifconf *) arg)->ifc_len =
((struct ifconf *)ioc.ic_dp)->ifc_len;
((struct ifconf *) arg)->ifc_buf =
(caddr_t)((struct ifconf *)ioc.ic_dp)->ifc_req;
}
# endif
return(ret);
}
#else /* ((SVR4 && !sun && !NCR) || ISC) && SIOCGIFCONF */
# define ifioctl ioctl
#endif /* ((SVR4 && !sun) || ISC) && SIOCGIFCONF */
/* ARGSUSED */
static void
PingHosts (XtPointer closure, XtIntervalId *id)
{
HostAddr *hosts;
int sfd = socketFD;
for (hosts = hostAddrdb; hosts; hosts = hosts->next)
{
#if defined(IPv6) && defined(AF_INET6)
if ( ((struct sockaddr *) hosts->addr)->sa_family == AF_INET6 )
sfd = socket6FD;
else
sfd = socketFD;
#endif
if (hosts->type == QUERY)
XdmcpFlush (sfd, &directBuffer,
(XdmcpNetaddr) hosts->addr, hosts->addrlen);
else
XdmcpFlush (sfd, &broadcastBuffer,
(XdmcpNetaddr) hosts->addr, hosts->addrlen);
}
if (++pingTry < TRIES)
XtAddTimeOut (PING_INTERVAL, PingHosts, (XtPointer) 0);
}
char **NameTable;
int NameTableSize;
static int
HostnameCompare (const void *a, const void *b)
{
return strcmp (*(char **)a, *(char **)b);
}
static void
RebuildTable (int size)
{
char **newTable = NULL;
HostName *names;
int i;
if (size)
{
newTable = (char **) malloc (size * sizeof (char *));
if (!newTable)
return;
for (names = hostNamedb, i = 0; names; names = names->next, i++)
newTable[i] = names->fullname;
qsort (newTable, size, sizeof (char *), HostnameCompare);
}
XawListChange (list, newTable, size, 0, TRUE);
if (NameTable)
free ((char *) NameTable);
NameTable = newTable;
NameTableSize = size;
}
static int
AddHostname (ARRAY8Ptr hostname, ARRAY8Ptr status, struct sockaddr *addr, int willing)
{
HostName *new, **names, *name;
ARRAY8 hostAddr = {0, NULL};
CARD16 connectionType;
int fulllen;
switch (addr->sa_family)
{
case AF_INET:
hostAddr.data = (CARD8 *) &((struct sockaddr_in *) addr)->sin_addr;
hostAddr.length = 4;
connectionType = FamilyInternet;
break;
#if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
hostAddr.data = (CARD8 *) &((struct sockaddr_in6 *) addr)->sin6_addr;
hostAddr.length = 16;
connectionType = FamilyInternet6;
break;
#endif
default:
hostAddr.data = (CARD8 *) "";
hostAddr.length = 0;
connectionType = FamilyLocal;
break;
}
for (names = &hostNamedb; *names; names = & (*names)->next)
{
name = *names;
if (connectionType == name->connectionType &&
XdmcpARRAY8Equal (&hostAddr, &name->hostaddr))
{
if (XdmcpARRAY8Equal (status, &name->status))
{
return 0;
}
break;
}
}
if (!*names)
{
new = (HostName *) malloc (sizeof (HostName));
if (!new)
return 0;
if (hostname->length)
{
switch (addr->sa_family)
{
case AF_INET:
#if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
#endif
{
struct hostent *hostent;
char *host;
hostent = gethostbyaddr ((char *)hostAddr.data, hostAddr.length, addr->sa_family);
if (hostent)
{
XdmcpDisposeARRAY8 (hostname);
host = (char *)hostent->h_name;
XdmcpAllocARRAY8 (hostname, strlen (host));
memmove( hostname->data, host, hostname->length);
}
}
}
}
if (!XdmcpAllocARRAY8 (&new->hostaddr, hostAddr.length))
{
free ((char *) new->fullname);
free ((char *) new);
return 0;
}
memmove( new->hostaddr.data, hostAddr.data, hostAddr.length);
new->connectionType = connectionType;
new->hostname = *hostname;
*names = new;
new->next = NULL;
NameTableSize++;
}
else
{
new = *names;
free (new->fullname);
XdmcpDisposeARRAY8 (&new->status);
XdmcpDisposeARRAY8 (hostname);
}
new->willing = willing;
new->status = *status;
hostname = &new->hostname;
fulllen = hostname->length;
if (fulllen < 30)
fulllen = 30;
fulllen += status->length + 10;
new->fullname = malloc (fulllen);
if (!new->fullname)
{
new->fullname = "Unknown";
}
else
{
snprintf(new->fullname, fulllen, "%-30.*s %*.*s",
hostname->length, hostname->data,
status->length, status->length, status->data);
}
RebuildTable (NameTableSize);
return 1;
}
static void
DisposeHostname (HostName *host)
{
XdmcpDisposeARRAY8 (&host->hostname);
XdmcpDisposeARRAY8 (&host->hostaddr);
XdmcpDisposeARRAY8 (&host->status);
free ((char *) host->fullname);
free ((char *) host);
}
#if 0
static void
RemoveHostname (HostName *host)
{
HostName **prev, *hosts;
prev = &hostNamedb;;
for (hosts = hostNamedb; hosts; hosts = hosts->next)
{
if (hosts == host)
break;
prev = &hosts->next;
}
if (!hosts)
return;
*prev = host->next;
DisposeHostname (host);
NameTableSize--;
RebuildTable (NameTableSize);
}
#endif
static void
EmptyHostnames (void)
{
HostName *hosts, *next;
for (hosts = hostNamedb; hosts; hosts = next)
{
next = hosts->next;
DisposeHostname (hosts);
}
NameTableSize = 0;
hostNamedb = NULL;
RebuildTable (NameTableSize);
}
/* ARGSUSED */
static void
ReceivePacket (XtPointer closure, int *source, XtInputId *id)
{
XdmcpHeader header;
ARRAY8 authenticationName = {0, NULL};
ARRAY8 hostname = {0, NULL};
ARRAY8 status = {0, NULL};
int saveHostname = 0;
#if defined(IPv6) && defined(AF_INET6)
struct sockaddr_storage addr;
#else
struct sockaddr addr;
#endif
int addrlen;
int sfd = * (int *) closure;
addrlen = sizeof (addr);
if (!XdmcpFill (sfd, &buffer, (XdmcpNetaddr) &addr, &addrlen))
return;
if (!XdmcpReadHeader (&buffer, &header))
return;
if (header.version != XDM_PROTOCOL_VERSION)
return;
switch (header.opcode) {
case WILLING:
if (XdmcpReadARRAY8 (&buffer, &authenticationName) &&
XdmcpReadARRAY8 (&buffer, &hostname) &&
XdmcpReadARRAY8 (&buffer, &status))
{
if (header.length == 6 + authenticationName.length +
hostname.length + status.length)
{
if (AddHostname (&hostname, &status, (struct sockaddr *) &addr,
header.opcode == (int) WILLING))
saveHostname = 1;
}
}
XdmcpDisposeARRAY8 (&authenticationName);
break;
case UNWILLING:
if (XdmcpReadARRAY8 (&buffer, &hostname) &&
XdmcpReadARRAY8 (&buffer, &status))
{
if (header.length == 4 + hostname.length + status.length)
{
if (AddHostname (&hostname, &status, (struct sockaddr *) &addr,
header.opcode == (int) WILLING))
saveHostname = 1;
}
}
break;
default:
break;
}
if (!saveHostname)
{
XdmcpDisposeARRAY8 (&hostname);
XdmcpDisposeARRAY8 (&status);
}
}
static void
RegisterHostaddr (struct sockaddr *addr, int len, xdmOpCode type)
{
HostAddr *host, **prev;
host = (HostAddr *) malloc (sizeof (HostAddr));
if (!host)
return;
host->addr = (struct sockaddr *) malloc (len);
if (!host->addr)
{
free ((char *) host);
return;
}
memmove( (char *) host->addr, (char *) addr, len);
host->addrlen = len;
host->type = type;
for (prev = &hostAddrdb; *prev; prev = &(*prev)->next)
;
*prev = host;
host->next = NULL;
}
/*
* Register the address for this host.
* Called with each of the names on the command line.
* The special name "BROADCAST" looks up all the broadcast
* addresses on the local host.
*/
/* Handle variable length ifreq in BNR2 and later */
#ifdef VARIABLE_IFREQ
# define ifr_size(p) (sizeof (struct ifreq) + \
(p->ifr_addr.sa_len > sizeof (p->ifr_addr) ? \
p->ifr_addr.sa_len - sizeof (p->ifr_addr) : 0))
#else
# define ifr_size(p) (sizeof (struct ifreq))
#endif
static void
RegisterHostname (char *name)
{
#if !defined(IPv6) || !defined(AF_INET6)
struct hostent *hostent;
#endif
struct sockaddr_in in_addr;
struct ifconf ifc;
register struct ifreq *ifr;
struct sockaddr broad_addr;
char buf[2048], *cp, *cplim;
if (!strcmp (name, BROADCAST_HOSTNAME))
{
#ifdef WINTCP /* NCR with Wollongong TCP */
int ipfd;
struct ifconf *ifcp;
struct strioctl ioc;
int n;
ifcp = (struct ifconf *)buf;
ifcp->ifc_buf = buf+4;
ifcp->ifc_len = sizeof (buf) - 4;
if ((ipfd=open( "/dev/ip", O_RDONLY )) < 0 )
{
t_error( "RegisterHostname() t_open(/dev/ip) failed" );
return;
}
ioc.ic_cmd = IPIOC_GETIFCONF;
ioc.ic_timout = 60;
ioc.ic_len = sizeof( buf );
ioc.ic_dp = (char *)ifcp;
if (ioctl (ipfd, (int) I_STR, (char *) &ioc) < 0)
{
perror( "RegisterHostname() ioctl(I_STR(IPIOC_GETIFCONF)) failed" );
close( ipfd );
return;
}
for (ifr = ifcp->ifc_req, n = ifcp->ifc_len / sizeof (struct ifreq);
--n >= 0;
ifr++)
#else /* WINTCP */
ifc.ifc_len = sizeof (buf);
ifc.ifc_buf = buf;
if (ifioctl (socketFD, (int) SIOCGIFCONF, (char *) &ifc) < 0)
return;
# ifdef ISC
# define IFC_IFC_REQ (struct ifreq *) ifc.ifc_buf
# else
# define IFC_IFC_REQ ifc.ifc_req
# endif
cplim = (char *) IFC_IFC_REQ + ifc.ifc_len;
for (cp = (char *) IFC_IFC_REQ; cp < cplim; cp += ifr_size (ifr))
#endif /* WINTCP */
{
#ifndef WINTCP
ifr = (struct ifreq *) cp;
#endif
if (ifr->ifr_addr.sa_family != AF_INET)
continue;
broad_addr = ifr->ifr_addr;
((struct sockaddr_in *) &broad_addr)->sin_addr.s_addr =
htonl (INADDR_BROADCAST);
#ifdef SIOCGIFBRDADDR
{
struct ifreq broad_req;
broad_req = *ifr;
# ifdef WINTCP /* NCR with Wollongong TCP */
ioc.ic_cmd = IPIOC_GETIFFLAGS;
ioc.ic_timout = 0;
ioc.ic_len = sizeof( broad_req );
ioc.ic_dp = (char *)&broad_req;
if (ioctl (ipfd, I_STR, (char *) &ioc) != -1 &&
# else /* WINTCP */
if (ifioctl (socketFD, SIOCGIFFLAGS, (char *) &broad_req) != -1 &&
# endif /* WINTCP */
(broad_req.ifr_flags & IFF_BROADCAST) &&
(broad_req.ifr_flags & IFF_UP)
)
{
broad_req = *ifr;
# ifdef WINTCP /* NCR with Wollongong TCP */
ioc.ic_cmd = IPIOC_GETIFBRDADDR;
ioc.ic_timout = 0;
ioc.ic_len = sizeof( broad_req );
ioc.ic_dp = (char *)&broad_req;
if (ioctl (ipfd, I_STR, (char *) &ioc) != -1)
# else /* WINTCP */
if (ifioctl (socketFD, SIOCGIFBRDADDR, &broad_req) != -1)
# endif /* WINTCP */
broad_addr = broad_req.ifr_addr;
else
continue;
}
else
continue;
}
#endif
in_addr = *((struct sockaddr_in *) &broad_addr);
in_addr.sin_port = htons (XDM_UDP_PORT);
#ifdef BSD44SOCKETS
in_addr.sin_len = sizeof(in_addr);
#endif
RegisterHostaddr ((struct sockaddr *)&in_addr, sizeof (in_addr),
BROADCAST_QUERY);
}
}
else
{
/* address as hex string, e.g., "12180022" (deprecated) */
if (strlen(name) == 8 &&
FromHex(name, (char *)&in_addr.sin_addr, strlen(name)) == 0)
{
in_addr.sin_family = AF_INET;
in_addr.sin_port = htons (XDM_UDP_PORT);
#ifdef BSD44SOCKETS
in_addr.sin_len = sizeof(in_addr);
#endif
RegisterHostaddr ((struct sockaddr *)&in_addr, sizeof (in_addr),
QUERY);
}
#if defined(IPv6) && defined(AF_INET6)
else {
char sport[8];
struct addrinfo *ai, *nai, hints;
bzero(&hints,sizeof(hints));
hints.ai_socktype = SOCK_DGRAM;
snprintf(sport, sizeof(sport), "%d", XDM_UDP_PORT);
if (getaddrinfo(name, sport, &hints, &ai) == 0) {
for (nai = ai ; nai != NULL ; nai = nai->ai_next) {
if ((nai->ai_family == AF_INET) ||
(nai->ai_family == AF_INET6)) {
if (((nai->ai_family == AF_INET) &&
IN_MULTICAST(((struct sockaddr_in *) nai->ai_addr)
->sin_addr.s_addr))
|| ((nai->ai_family == AF_INET6) &&
IN6_IS_ADDR_MULTICAST(
&((struct sockaddr_in6 *) nai->ai_addr)
->sin6_addr)))
{
RegisterHostaddr(nai->ai_addr, nai->ai_addrlen,
BROADCAST_QUERY);
} else {
RegisterHostaddr(nai->ai_addr, nai->ai_addrlen,
QUERY);
}
}
}
freeaddrinfo(ai);
}
}
#else
/* Per RFC 1123, check first for IP address in dotted-decimal form */
else if ((in_addr.sin_addr.s_addr = inet_addr(name)) != -1)
in_addr.sin_family = AF_INET;
else
{
hostent = gethostbyname (name);
if (!hostent)
return;
if (hostent->h_addrtype != AF_INET || hostent->h_length != 4)
return;
in_addr.sin_family = hostent->h_addrtype;
memmove( &in_addr.sin_addr, hostent->h_addr, 4);
}
in_addr.sin_port = htons (XDM_UDP_PORT);
# ifdef BSD44SOCKETS
in_addr.sin_len = sizeof(in_addr);
# endif
RegisterHostaddr ((struct sockaddr *)&in_addr, sizeof (in_addr),
QUERY);
#endif /* IPv6 */
}
}
static ARRAYofARRAY8 AuthenticationNames;
#if 0
static void
RegisterAuthenticationName (char *name, int namelen)
{
ARRAY8Ptr authName;
if (!XdmcpReallocARRAYofARRAY8 (&AuthenticationNames,
AuthenticationNames.length + 1))
return;
authName = &AuthenticationNames.data[AuthenticationNames.length-1];
if (!XdmcpAllocARRAY8 (authName, namelen))
return;
memmove( authName->data, name, namelen);
}
#endif
static int
InitXDMCP (char **argv)
{
int soopts = 1;
XdmcpHeader header;
int i;
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16) BROADCAST_QUERY;
header.length = 1;
for (i = 0; i < (int)AuthenticationNames.length; i++)
header.length += 2 + AuthenticationNames.data[i].length;
XdmcpWriteHeader (&broadcastBuffer, &header);
XdmcpWriteARRAYofARRAY8 (&broadcastBuffer, &AuthenticationNames);
header.version = XDM_PROTOCOL_VERSION;
header.opcode = (CARD16) QUERY;
header.length = 1;
for (i = 0; i < (int)AuthenticationNames.length; i++)
header.length += 2 + AuthenticationNames.data[i].length;
XdmcpWriteHeader (&directBuffer, &header);
XdmcpWriteARRAYofARRAY8 (&directBuffer, &AuthenticationNames);
#if defined(STREAMSCONN)
if ((socketFD = t_open ("/dev/udp", O_RDWR, 0)) < 0)
return 0;
if (t_bind( socketFD, NULL, NULL ) < 0)
{
t_close(socketFD);
return 0;
}
/*
* This part of the code looks contrived. It will actually fit in nicely
* when the CLTS part of Xtrans is implemented.
*/
{
struct netconfig *nconf;
if( (nconf=getnetconfigent("udp")) == NULL )
{
t_unbind(socketFD);
t_close(socketFD);
return 0;
}
if( netdir_options(nconf, ND_SET_BROADCAST, socketFD, NULL) )
{
freenetconfigent(nconf);
t_unbind(socketFD);
t_close(socketFD);
return 0;
}
freenetconfigent(nconf);
}
#else
if ((socketFD = socket (AF_INET, SOCK_DGRAM, 0)) < 0)
return 0;
# if defined(IPv6) && defined(AF_INET6)
socket6FD = socket (AF_INET6, SOCK_DGRAM, 0);
# endif
#endif
#ifndef STREAMSCONN
# ifdef SO_BROADCAST
soopts = 1;
if (setsockopt (socketFD, SOL_SOCKET, SO_BROADCAST, (char *)&soopts, sizeof (soopts)) < 0)
perror ("setsockopt");
# endif
#endif
XtAddInput (socketFD, (XtPointer) XtInputReadMask, ReceivePacket,
(XtPointer) &socketFD);
#if defined(IPv6) && defined(AF_INET6)
if (socket6FD != -1)
XtAddInput (socket6FD, (XtPointer) XtInputReadMask, ReceivePacket,
(XtPointer) &socket6FD);
#endif
while (*argv)
{
RegisterHostname (*argv);
++argv;
}
pingTry = 0;
PingHosts ((XtPointer)NULL, (XtIntervalId *)NULL);
return 1;
}
static void
Choose (HostName *h)
{
if (app_resources.xdmAddress)
{
struct sockaddr_in in_addr;
#if defined(IPv6) && defined(AF_INET6)
struct sockaddr_in6 in6_addr;
#endif
struct sockaddr *addr = NULL;
int family;
int len = 0;
int fd;
char buf[1024];
XdmcpBuffer buffer;
char *xdm;
#if defined(STREAMSCONN)
struct t_call call, rcv;
#endif
xdm = (char *) app_resources.xdmAddress->data;
family = (xdm[0] << 8) + xdm[1];
switch (family) {
case AF_INET:
#ifdef BSD44SOCKETS
in_addr.sin_len = sizeof(in_addr);
#endif
in_addr.sin_family = family;
memmove( &in_addr.sin_port, xdm + 2, 2);
memmove( &in_addr.sin_addr, xdm + 4, 4);
addr = (struct sockaddr *) &in_addr;
len = sizeof (in_addr);
break;
#if defined(IPv6) && defined(AF_INET6)
case AF_INET6:
bzero(&in6_addr, sizeof(in6_addr));
# ifdef SIN6_LEN
in6_addr.sin6_len = sizeof(in6_addr);
# endif
in6_addr.sin6_family = family;
memmove( &in6_addr.sin6_port, xdm + 2, 2);
memmove( &in6_addr.sin6_addr, xdm + 4, 16);
addr = (struct sockaddr *) &in6_addr;
len = sizeof (in6_addr);
break;
#endif
}
#if defined(STREAMSCONN)
if ((fd = t_open ("/dev/tcp", O_RDWR, NULL)) == -1)
{
fprintf (stderr, "Cannot create response endpoint\n");
fflush(stderr);
exit (REMANAGE_DISPLAY);
}
if (t_bind (fd, NULL, NULL) == -1)
{
fprintf (stderr, "Cannot bind response endpoint\n");
fflush(stderr);
t_close (fd);
exit (REMANAGE_DISPLAY);
}
call.addr.buf=(char *)addr;
call.addr.len=len;
call.addr.maxlen=len;
call.opt.len=0;
call.opt.maxlen=0;
call.udata.len=0;
call.udata.maxlen=0;
if (t_connect (fd, &call, NULL) == -1)
{
t_error ("Cannot connect to xdm\n");
fflush(stderr);
t_unbind (fd);
t_close (fd);
exit (REMANAGE_DISPLAY);
}
#else
if ((fd = socket (family, SOCK_STREAM, 0)) == -1)
{
fprintf (stderr, "Cannot create response socket\n");
exit (REMANAGE_DISPLAY);
}
if (connect (fd, addr, len) == -1)
{
fprintf (stderr, "Cannot connect to xdm\n");
exit (REMANAGE_DISPLAY);
}
#endif
buffer.data = (BYTE *) buf;
buffer.size = sizeof (buf);
buffer.pointer = 0;
buffer.count = 0;
XdmcpWriteARRAY8 (&buffer, app_resources.clientAddress);
XdmcpWriteCARD16 (&buffer, (CARD16) app_resources.connectionType);
XdmcpWriteARRAY8 (&buffer, &h->hostaddr);
#if defined(STREAMSCONN)
if( t_snd (fd, (char *)buffer.data, buffer.pointer, 0) < 0 )
{
fprintf (stderr, "Cannot send to xdm\n");
fflush(stderr);
t_unbind (fd);
t_close (fd);
exit (REMANAGE_DISPLAY);
}
sleep(5); /* Hack because sometimes the connection gets
closed before the data arrives on the other end. */
t_snddis (fd,NULL);
t_unbind (fd);
t_close (fd);
#else
write (fd, (char *)buffer.data, buffer.pointer);
close (fd);
#endif
}
else
{
int i;
printf ("%u\n", h->connectionType);
for (i = 0; i < (int)h->hostaddr.length; i++)
printf ("%u%s", h->hostaddr.data[i],
i == h->hostaddr.length - 1 ? "\n" : " ");
}
}
/*
next_line returns the next line in a list
across the list end.
(0, 1, 2, 3, 0, 1, 2, 3 ....)
*/
static int
next_line(unsigned int current, unsigned int size, int event)
{
switch(event) {
case Button5:
return (current + 1) % size;
case Button4:
return (current + size - 1) % size;
case XK_Down:
return (current + 1) % size;
case XK_Up:
return (current + size - 1) % size;
}
return -1;
}
/*
Hostselect selects a given chooser line.
Returns 1 when host is willing and 0 if not
*/
static int
Hostselect (int line)
{
XawListReturnStruct *r;
HostName *h;
/* Assume the next host is willing */
XawListHighlight (list,line);
r = XawListShowCurrent (list);
/* copied from DoCheckWilling */
for (h = hostNamedb; h; h = h->next)
{
if (!strcmp (r->string, h->fullname))
{
if (!h->willing)
XawListUnhighlight (list);
else
{
/* Scroll viewport to make sure new selection is visible */
Arg size[2];
Dimension height, portheight;
Position y;
int lineheight, liney;
XtSetArg (size[0], XtNheight, &height);
XtSetArg (size[1], XtNy, &y);
XtGetValues (list, size, (Cardinal) 2);
XtSetArg (size[0], XtNheight, &portheight);
XtGetValues (viewport, size, (Cardinal) 1);
lineheight = height / NameTableSize;
liney = lineheight * line;
if ((y + liney) < 0) {
XawViewportSetCoordinates(viewport, 0, liney);
} else if ((y + liney + lineheight) > portheight) {
XawViewportSetCoordinates(viewport, 0,
(liney + lineheight) - portheight);
}
XtFree((char *) r);
return 1;
}
}
}
XtFree((char *) r);
return 0;
}
/*
Selectfirst selects the first willing host
in the chooser list (so you can select a host without
presence of mouse, but with pressing space or return,
or XK_Down / XK_Up
*/
static void
Selectfirst (void)
{
int line;
for (line = 0; line < NameTableSize; line++)
{
if (Hostselect(line))
return;
}
return;
}
/*
Storeold stores the selected line into global int oldentry
*/
static void
Storeold (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
XawListReturnStruct *r = XawListShowCurrent(list);
oldline = r->list_index;
XtFree((char *) r);
}
/*
Setold restores the global int oldentry
when you try to select a host with your mouse
who is unwilling as follows:
<Btn1Down>: Store() Set() CheckWilling() Setold() \n\
*/
static void
Setold (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
if ( (XawListShowCurrent(list))->list_index == XAW_LIST_NONE && oldline != XAW_LIST_NONE)
XawListHighlight (list, oldline);
}
/*
HostCycle tries to select the next willing host across
the list end and will stop at the first found willing host
or after trying all entries.
*/
static void
HostCycle(unsigned int line, unsigned int size, KeySym keysym)
{
unsigned int newline = line;
/* Do it only once around the chooser list, either direction */
while ( (newline = next_line(newline,size,keysym)) != line && newline != -1)
{
if (Hostselect(newline))
return;
}
/* No other willing host could be found, stay at the old one*/
XawListHighlight (list, line);
return;
}
/*
Switch_Key handles XK_Up and XK_Down
and highlights an appropriate line in the chooser list.
*/
static void
Switch_Key (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
char strbuf[128];
KeySym keysym = 0;
static XComposeStatus compose_status = {NULL, 0};
XawListReturnStruct *r;
XLookupString (&event->xkey, strbuf, sizeof (strbuf),
&keysym, &compose_status);
if (keysym != XK_Up && keysym != XK_Down)
return;
r = XawListShowCurrent (list);
if (r->list_index == XAW_LIST_NONE)
Selectfirst();
else
HostCycle(r->list_index,NameTableSize,keysym);
XtFree((char *) r);
return;
}
/*
Switch_Btn handles ScrollWheel Forward (Button5) and Backward
(Button4) and highlights an appropriate line in the chooser list.
*/
static void
Switch_Btn (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
XawListReturnStruct *r;
r = XawListShowCurrent (list);
if (r->list_index == XAW_LIST_NONE)
Selectfirst();
else
HostCycle(r->list_index,NameTableSize,event->xbutton.button);
XtFree((char *) r);
return;
}
/* ARGSUSED */
static void
DoAccept (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
XawListReturnStruct *r;
HostName *h;
r = XawListShowCurrent (list);
if (r->list_index == XAW_LIST_NONE)
#ifdef XKB
XkbStdBell(XtDisplay(toplevel),XtWindow(w),0,XkbBI_MinorError);
#else
XBell (XtDisplay (toplevel), 0);
#endif
else
{
for (h = hostNamedb; h; h = h->next)
if (!strcmp (r->string, h->fullname))
{
Choose (h);
}
exit (OBEYSESS_DISPLAY);
}
XtFree((char *) r);
}
/* ARGSUSED */
static void
DoCheckWilling (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
XawListReturnStruct *r;
HostName *h;
r = XawListShowCurrent (list);
if (r->list_index != XAW_LIST_NONE) {
for (h = hostNamedb; h; h = h->next)
if (!strcmp (r->string, h->fullname))
if (!h->willing)
XawListUnhighlight (list);
}
XtFree((char *) r);
}
/* ARGSUSED */
static void
DoCancel (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
exit (OBEYSESS_DISPLAY);
}
/* ARGSUSED */
static void
DoPing (Widget w, XEvent *event, String *params, Cardinal *num_params)
{
EmptyHostnames ();
pingTry = 0;
PingHosts ((XtPointer)NULL, (XtIntervalId *)NULL);
}
static XtActionsRec app_actions[] = {
{ "Accept", DoAccept },
{ "Cancel", DoCancel },
{ "CheckWilling", DoCheckWilling },
{ "Ping", DoPing },
{ "KeySwitch", Switch_Key },
{ "BtnSwitch", Switch_Btn },
{ "Store", Storeold },
{ "Setold", Setold },
};
int
main (int argc, char **argv)
{
Arg position[3];
Dimension width, height;
Position x, y;
#ifdef USE_XINERAMA
XineramaScreenInfo *screens;
int s_num;
#endif
toplevel = XtInitialize (argv[0], "Chooser", options, XtNumber(options), &argc, argv);
XtAddConverter(XtRString, XtRARRAY8, CvtStringToARRAY8, NULL, 0);
XtGetApplicationResources (toplevel, (XtPointer) &app_resources, resources,
XtNumber (resources), NULL, (Cardinal) 0);
XtAddActions (app_actions, XtNumber (app_actions));
paned = XtCreateManagedWidget ("paned", panedWidgetClass, toplevel, NULL, 0);
label = XtCreateManagedWidget ("label", labelWidgetClass, paned, NULL, 0);
viewport = XtCreateManagedWidget ("viewport", viewportWidgetClass, paned, NULL, 0);
list = XtCreateManagedWidget ("list", listWidgetClass, viewport, NULL, 0);
box = XtCreateManagedWidget ("box", boxWidgetClass, paned, NULL, 0);
cancel = XtCreateManagedWidget ("cancel", commandWidgetClass, box, NULL, 0);
acceptit = XtCreateManagedWidget ("accept", commandWidgetClass, box, NULL, 0);
ping = XtCreateManagedWidget ("ping", commandWidgetClass, box, NULL, 0);
/*
* center ourselves on the screen
*/
XtSetMappedWhenManaged(toplevel, FALSE);
XtRealizeWidget (toplevel);
XtSetArg (position[0], XtNwidth, &width);
XtSetArg (position[1], XtNheight, &height);
XtGetValues (toplevel, position, (Cardinal) 2);
#ifdef USE_XINERAMA
if (
XineramaIsActive(XtDisplay(toplevel)) &&
(screens = XineramaQueryScreens(XtDisplay(toplevel), &s_num)) != NULL
)
{
x = (Position)(screens[0].x_org + (screens[0].width - width) / 2);
y = (Position)(screens[0].y_org + (screens[0].height - height) / 3);
XFree(screens);
}
else
#endif
{
x = (Position)(WidthOfScreen (XtScreen (toplevel)) - width) / 2;
y = (Position)(HeightOfScreen (XtScreen (toplevel)) - height) / 3;
}
XtSetArg (position[0], XtNx, x);
XtSetArg (position[1], XtNy, y);
XtSetValues (toplevel, position, (Cardinal) 2);
/*
* Run
*/
XtMapWidget(toplevel);
InitXDMCP (argv + 1);
XtMainLoop ();
exit(0);
/*NOTREACHED*/
}
/* Converts the hex string s of length len into the byte array d.
Returns 0 if s was a legal hex string, 1 otherwise.
*/
static int
FromHex (char *s, char *d, int len)
{
int t;
int ret = len&1; /* odd-length hex strings are illegal */
while (len >= 2)
{
#define HexChar(c) ('0' <= (c) && (c) <= '9' ? (c) - '0' : (c) - 'a' + 10)
if (!ishexdigit(*s))
ret = 1;
t = HexChar (*s) << 4;
s++;
if (!ishexdigit(*s))
ret = 1;
t += HexChar (*s);
s++;
*d++ = t;
len -= 2;
}
return ret;
}
/*ARGSUSED*/
static void
CvtStringToARRAY8 (XrmValuePtr args, Cardinal *num_args, XrmValuePtr fromVal, XrmValuePtr toVal)
{
static ARRAY8Ptr dest;
char *s;
int len;
dest = (ARRAY8Ptr) XtMalloc (sizeof (ARRAY8));
len = fromVal->size;
s = (char *) fromVal->addr;
if (!XdmcpAllocARRAY8 (dest, len >> 1))
XtStringConversionWarning ((char *) fromVal->addr, XtRARRAY8);
else
{
FromHex (s, (char *) dest->data, len);
}
toVal->addr = (caddr_t) &dest;
toVal->size = sizeof (ARRAY8Ptr);
}
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