Edit
IABSD.fr/xenocara/app/xdm/chooser.c
matthieu
- app/xdm/chooser.c
-
/* * $XdotOrg: app/xdm/chooser.c,v 1.5 2006/03/11 04:07:00 alanc Exp $ * $Xorg: chooser.c,v 1.4 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/chooser.c,v 3.26 2003/07/18 15:53:28 tsi Exp $ */ /* * 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; 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; new->fullname = malloc (fulllen + status->length + 10); if (!new->fullname) { new->fullname = "Unknown"; } else { sprintf (new->fullname, "%-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; ARRAY8 hostname; ARRAY8 status; 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; hostname.data = NULL; status.data = NULL; authenticationName.data = NULL; 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; sprintf(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); }