diff options
Diffstat (limited to 'tdm/kfrontend/tdmctl.c')
| -rw-r--r-- | tdm/kfrontend/tdmctl.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/tdm/kfrontend/tdmctl.c b/tdm/kfrontend/tdmctl.c new file mode 100644 index 000000000..d6abe959a --- /dev/null +++ b/tdm/kfrontend/tdmctl.c @@ -0,0 +1,234 @@ +/* + +TDM remote control application + +Copyright (C) 2004 Oswald Buddenhagen <ossi@kde.org> + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +*/ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <ctype.h> +#include <sys/socket.h> +#include <sys/un.h> + +static int +openctl( int fd, int err, const char *ctl, const char *dpy ) +{ + struct sockaddr_un sa; + + sa.sun_family = AF_UNIX; + if (dpy) + snprintf( sa.sun_path, sizeof(sa.sun_path), + "%s/dmctl-%s/socket", ctl, dpy ); + else + snprintf( sa.sun_path, sizeof(sa.sun_path), + "%s/dmctl/socket", ctl ); + if (!connect( fd, (struct sockaddr *)&sa, sizeof(sa) )) + return 1; + if (err) + fprintf( stderr, "Cannot connect socket '%s'.\n", sa.sun_path ); + return 0; +} + +static const char * +readcfg( const char *cfg ) +{ + FILE *fp; + const char *ctl; + char *ptr, *ptr2; + char buf[1024]; + + if (!(fp = fopen( cfg, "r" ))) { + fprintf( stderr, + "Cannot open tdm config file '%s'.\n", + cfg ); + return 0; + } + ctl = "/var/run/xdmctl"; + while (fgets( buf, sizeof(buf), fp )) + if (!strncmp( buf, "FifoDir", 7 )) { + ptr = buf + 7; + while (*ptr && isspace( *ptr )) + ptr++; + if (*ptr++ != '=') + continue; + while (*ptr && isspace( *ptr )) + ptr++; + for (ptr2 = buf + strlen( buf ); + ptr2 > ptr && isspace( *(ptr2 - 1) ); + ptr2--); + *ptr2 = 0; + ctl = strdup( ptr ); + break; + } + fclose( fp ); + return ctl; +} + +static int +exe( int fd, const char *in, int len ) +{ + char buf[4096]; + + if (write( fd, in, len ) != len) { + fprintf( stderr, "Cannot send command\n" ); + return 1; + } + do { + if ((len = read(fd, buf, sizeof(buf))) <= 0) { + fprintf(stderr, "Cannot receive reply\n"); + return 1; + } + fwrite(buf, 1, len, stdout); + } while (buf[len - 1] != '\n'); + return 0; +} + +static int +run( int fd, char **argv ) +{ + unsigned len, l; + char buf[1024]; + + if (!*argv) + return exe( fd, "caps\n", 5 ); + if (!strcmp( *argv, "-" )) { + for (;;) { + if (isatty( 0 )) { + fputs( "> ", stdout ); + fflush( stdout ); + } + if (!fgets( buf, sizeof(buf), stdin )) + return 0; + if (exe( fd, buf, strlen( buf ) )) + return 1; + } + } else { + len = strlen( *argv ); + if (len >= sizeof(buf)) + goto bad; + memcpy( buf, *argv, len ); + while (*++argv) { + l = strlen( *argv ); + if (len + l + 1 >= sizeof(buf)) + goto bad; + buf[len++] = '\t'; + memcpy( buf + len, *argv, l ); + len += l; + } + buf[len++] = '\n'; + return exe( fd, buf, len ); + bad: + fprintf( stderr, "Command too long\n" ); + return 1; + } +} + +int +main( int argc, char **argv ) +{ + char *dpy = getenv( "DISPLAY" ); + const char *ctl = getenv( "DM_CONTROL" ); + const char *cfg = KDE_CONFDIR "/tdm/tdmrc"; + char *ptr; + int fd; + + (void)argc; + while (*++argv) { + ptr = *argv; + if (*ptr != '-' || !*(ptr + 1)) + break; + ptr++; + if (*ptr == '-') + ptr++; + if (!strcmp( ptr, "h" ) || !strcmp( ptr, "help" )) { + puts( +"Usage: tdmctl [options] [command [command arguments]]\n" +"\n" +"Options are:\n" +" -h -help This help message.\n" +" -g -global Use global control socket even if $DISPLAY is set\n" +" -d -display Override $DISPLAY\n" +" -s -sockets Override $DM_CONTROL\n" +" -c -config Use alternative tdm config file\n" +"\n" +"The directory in which the sockets are located is determined this way:\n" +"- the -s option is examined\n" +"- the $DM_CONTROL variable is examined\n" +"- the tdm config file is searched for the FifoDir key\n" +"- /var/run/xdmctl and /var/run are tried\n" +"\n" +"If $DISPLAY is set (or -d was specified) and -g was not specified, the\n" +"display-specific control socket will be used, otherwise the global one.\n" +"\n" +"Tokens in the command and the reply are tab-separated.\n" +"Command arguments can be specified as separate command line parameters,\n" +"in which case they are simply concatenated with tabs in between.\n" +"\n" +"If the command is '-', tdmctl reads commands from stdin.\n" +"The default command is 'caps'.\n" + ); + return 0; + } else if (!strcmp( ptr, "g" ) || !strcmp( ptr, "global" )) + dpy = 0; + else if (!strcmp( ptr, "d" ) || !strcmp( ptr, "display" )) { + if (!argv[1]) + goto needarg; + dpy = *++argv; + } else if (!strcmp( ptr, "s" ) || !strcmp( ptr, "sockets" )) { + if (!argv[1]) + goto needarg; + ctl = *++argv; + } else if (!strcmp( ptr, "c" ) || !strcmp( ptr, "config" )) { + if (!argv[1]) { + needarg: + fprintf( stderr, "Option '%s' needs argument.\n", + ptr ); + return 1; + } + cfg = *++argv; + } else { + fprintf( stderr, "Unknown option '%s'.\n", ptr ); + return 1; + } + } + if ((!ctl || !*ctl) && *cfg) + ctl = readcfg( cfg ); + if ((fd = socket( PF_UNIX, SOCK_STREAM, 0 )) < 0) { + fprintf( stderr, "Cannot create UNIX socket\n" ); + return 1; + } + if (dpy && (ptr = strchr( dpy, ':' )) && (ptr = strchr( ptr, '.' ))) + *ptr = 0; + if (ctl && *ctl) { + if (!openctl( fd, 1, ctl, dpy )) + return 1; + } else { + if (!openctl( fd, 0, "/var/run/xdmctl", dpy ) && + !openctl( fd, 0, "/var/run", dpy )) + { + fprintf( stderr, "No command socket found.\n" ); + return 1; + } + } + return run( fd, argv ); +} |