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Diffstat (limited to 'restart.c')
| -rw-r--r-- | restart.c | 624 |
1 files changed, 624 insertions, 0 deletions
diff --git a/restart.c b/restart.c new file mode 100644 index 0000000..daff7eb --- /dev/null +++ b/restart.c @@ -0,0 +1,624 @@ +/* $Xorg: restart.c,v 1.5 2001/02/09 02:06:01 xorgcvs Exp $ */ +/****************************************************************************** + +Copyright 1993, 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. +******************************************************************************/ + +#include "xsm.h" +#include "log.h" + +extern void remote_start (); + + +/* + * Until XSMP provides a better way to know which clients are "managers", + * we have to hard code the list. + */ + +Bool +CheckIsManager (program) + +char *program; + +{ + return (strcmp (program, "twm") == 0); +} + + + +/* + * GetRestartInfo() will determine which method should be used to + * restart a client. + * + * 'restart_service_prop' is a property set by the client, or NULL. + * The format is "remote_start_protocol/remote_start_data". An + * example is "rstart-rsh/hostname". This is a non-standard property, + * which is the whole reason we need this function in order to determine + * the restart method. The proxy uses this property to over-ride the + * 'client_host_name' from the ICE connection (the proxy is connected to + * the SM via a local connection, but the proxy may be acting as a proxy + * for a remote client). + * + * 'client_host_name' is the connection info obtained from the ICE + * connection. It's format is "transport/host_info". An example + * is "tcp/machine:port". + * + * If 'restart_service_prop' is NULL, we use 'client_host_name' to + * determine the restart method. If the transport is "local", we + * do a local restart. Otherwise, we use the default "rstart-rsh" method. + * + * If 'restart_service_prop' is non-NULL, we check the remote_start_protocol + * field. "local" means a local restart. Currently, the only remote + * protocol we recognize is "rstart-rsh". If the remote protocol is + * "rstart-rsh" but the hostname in the 'restart_service_prop' matches + * 'client_host_name', we do a local restart. + * + * On return, set the run_local flag, restart_protocol and restart_machine. + */ + +void +GetRestartInfo (restart_service_prop, client_host_name, + run_local, restart_protocol, restart_machine) + +char *restart_service_prop; +char *client_host_name; +Bool *run_local; +char **restart_protocol; +char **restart_machine; + +{ + char hostnamebuf[80]; + char *temp; + + *run_local = False; + *restart_protocol = NULL; + *restart_machine = NULL; + + if (restart_service_prop) + { + gethostname (hostnamebuf, sizeof hostnamebuf); + + if ((temp = (char *) strchr ( + restart_service_prop, '/')) == NULL) + { + *restart_protocol = (char *) XtNewString ("rstart-rsh"); + *restart_machine = (char *) XtNewString (restart_service_prop); + } + else + { + *restart_protocol = (char *) XtNewString (restart_service_prop); + (*restart_protocol)[temp - restart_service_prop] = '\0'; + *restart_machine = (char *) XtNewString (temp + 1); + } + + if (strcmp (*restart_machine, hostnamebuf) == 0 || + strcmp (*restart_protocol, "local") == 0) + { + *run_local = True; + } + } + else + { + if (strncmp (client_host_name, "tcp/", 4) != 0 && + strncmp (client_host_name, "decnet/", 7) != 0) + { + *run_local = True; + } + else + { + *restart_protocol = (char *) XtNewString ("rstart-rsh"); + + if ((temp = (char *) strchr ( + client_host_name, '/')) == NULL) + { + *restart_machine = (char *) XtNewString (client_host_name); + } + else + { + *restart_machine = (char *) XtNewString (temp + 1); + } + } + } +} + + + +/* + * Restart clients. The flag indicates RESTART_MANAGERS or + * RESTART_REST_OF_CLIENTS. + */ + +Status +Restart (flag) + +int flag; + +{ + List *cl, *pl, *vl; + PendingClient *c; + Prop *prop; + char *cwd; + char *program; + char **args; + char **env; + char **pp; + int cnt; + extern char **environ; + char *p; + char *restart_service_prop; + char *restart_protocol; + char *restart_machine; + Bool run_local; + Bool is_manager; + Bool ran_manager = 0; + + for(cl = ListFirst(PendingList); cl; cl = ListNext(cl)) { + c = (PendingClient *)cl->thing; + + if (verbose) { + printf("Restarting id '%s'...\n", c->clientId); + printf("Host = %s\n", c->clientHostname); + } + cwd = "."; + env = NULL; + program=NULL; + args=NULL; + restart_service_prop=NULL; + + is_manager = 0; + + for(pl = ListFirst(c->props); pl; pl = ListNext(pl)) { + prop = (Prop *)pl->thing; + if(!strcmp(prop->name, SmProgram)) { + vl = ListFirst(prop->values); + if(vl) program = ((PropValue *)vl->thing)->value; + if (CheckIsManager (program)) + is_manager = 1; + } else if(!strcmp(prop->name, SmCurrentDirectory)) { + vl = ListFirst(prop->values); + if(vl) cwd = ((PropValue *)vl->thing)->value; + } else if(!strcmp(prop->name, "_XC_RestartService")) { + vl = ListFirst(prop->values); + if(vl) restart_service_prop = + ((PropValue *)vl->thing)->value; + } else if(!strcmp(prop->name, SmRestartCommand)) { + cnt = ListCount(prop->values); + args = (char **)XtMalloc((cnt+1) * sizeof(char *)); + pp = args; + for(vl = ListFirst(prop->values); vl; vl = ListNext(vl)) { + *pp++ = ((PropValue *)vl->thing)->value; + } + *pp = NULL; + } else if(!strcmp(prop->name, SmEnvironment)) { + cnt = ListCount(prop->values); + env = (char **)XtMalloc((cnt+3+1) * sizeof(char *)); + pp = env; + for(vl = ListFirst(prop->values); vl; vl = ListNext(vl)) { + p = ((PropValue *)vl->thing)->value; + if((display_env && strbw(p, "DISPLAY=")) + || (session_env && strbw(p, "SESSION_MANAGER=")) + || (audio_env && strbw(p, "AUDIOSERVER=")) + ) continue; + *pp++ = p; + } + if(display_env) *pp++ = display_env; + if(session_env) *pp++ = session_env; + if(audio_env) *pp++ = audio_env; + *pp = NULL; + } + } + + if(program && args) { + char logtext[256]; + + if ((flag == RESTART_MANAGERS && !is_manager) || + (flag == RESTART_REST_OF_CLIENTS && is_manager)) + { + if(args) XtFree((char *)args); + if(env) XtFree((char *)env); + continue; + } + + if (flag == RESTART_MANAGERS && is_manager) + ran_manager = 1; + + if (verbose) { + printf("\t%s\n", program); + printf("\t"); + for(pp = args; *pp; pp++) printf("%s ", *pp); + printf("\n"); + } + + GetRestartInfo (restart_service_prop, c->clientHostname, + &run_local, &restart_protocol, &restart_machine); + + if (run_local) + { + /* + * The client is being restarted on the local machine. + */ + + sprintf (logtext, "Restarting locally : "); + for (pp = args; *pp; pp++) + { + strcat (logtext, *pp); + strcat (logtext, " "); + } + + strcat (logtext, "\n"); + add_log_text (logtext); + + switch(fork()) { + case -1: + sprintf (logtext, + "%s: Can't fork() %s", Argv[0], program); + add_log_text (logtext); + perror (logtext); + break; + case 0: /* kid */ + chdir(cwd); + if(env) environ = env; + execvp(program, args); + sprintf (logtext, "%s: Can't execvp() %s", + Argv[0], program); + perror (logtext); + /* + * TODO : We would like to send this log information to the + * log window in the parent. This would require opening + * a pipe between the parent and child. The child would + * set close-on-exec. If the exec succeeds, the pipe will + * be closed. If it fails, the child can write a message + * to the parent. + */ + _exit(255); + default: /* parent */ + break; + } + } + else if (!remote_allowed) + { + fprintf(stderr, + "Can't remote start client ID '%s': only local supported\n", + c->clientId); + } + else + { + /* + * The client is being restarted on a remote machine. + */ + + sprintf (logtext, "Restarting remotely on %s : ", + restart_machine); + for (pp = args; *pp; pp++) + { + strcat (logtext, *pp); + strcat (logtext, " "); + } + strcat (logtext, "\n"); + add_log_text (logtext); + + remote_start (restart_protocol, restart_machine, + program, args, cwd, env, + non_local_display_env, non_local_session_env); + } + + if (restart_protocol) + XtFree (restart_protocol); + + if (restart_machine) + XtFree (restart_machine); + + } else { + fprintf(stderr, "Can't restart ID '%s': no program or no args\n", + c->clientId); + } + if(args) XtFree((char *)args); + if(env) XtFree((char *)env); + } + + if (flag == RESTART_MANAGERS && !ran_manager) + return (0); + else + return (1); +} + + + +/* + * Clone a client + */ + +void +Clone (client, useSavedState) + +ClientRec *client; +Bool useSavedState; + +{ + char *cwd; + char *program; + char **args; + char **env; + char **pp; + extern char **environ; + char *p; + char *restart_service_prop; + char *restart_protocol; + char *restart_machine; + Bool run_local; + List *pl, *pj; + + if (verbose) + { + printf ("Cloning id '%s', useSavedState = %d...\n", + client->clientId, useSavedState); + printf ("Host = %s\n", client->clientHostname); + } + + cwd = "."; + env = NULL; + program = NULL; + args = NULL; + restart_service_prop = NULL; + + for (pl = ListFirst (client->props); pl; pl = ListNext (pl)) + { + Prop *pprop = (Prop *) pl->thing; + List *vl = ListFirst (pprop->values); + PropValue *pval = (PropValue *) vl->thing; + + if (strcmp (pprop->name, SmProgram) == 0) + program = (char *) pval->value; + else if (strcmp (pprop->name, SmCurrentDirectory) == 0) + cwd = (char *) pval->value; + else if (strcmp (pprop->name, "_XC_RestartService") == 0) + restart_service_prop = (char *) pval->value; + else if ( + (!useSavedState && strcmp (pprop->name, SmCloneCommand) == 0) || + (useSavedState && strcmp (pprop->name, SmRestartCommand) == 0)) + { + args = (char **) XtMalloc ( + (ListCount (pprop->values) + 1) * sizeof (char *)); + + pp = args; + + for (pj = ListFirst (pprop->values); pj; pj = ListNext (pj)) + { + pval = (PropValue *) pj->thing; + *pp++ = (char *) pval->value; + } + *pp = NULL; + } + else if (strcmp (pprop->name, SmEnvironment) == 0) + { + env = (char **) XtMalloc ( + (ListCount (pprop->values) + 3 + 1) * sizeof (char *)); + pp = env; + + for (pj = ListFirst (pprop->values); pj; pj = ListNext (pj)) + { + pval = (PropValue *) pj->thing; + p = (char *) pval->value; + + if ((display_env && strbw (p, "DISPLAY=")) + || (session_env && strbw (p, "SESSION_MANAGER=")) + || (audio_env && strbw (p, "AUDIOSERVER="))) + continue; + + *pp++ = p; + } + + if (display_env) + *pp++ = display_env; + if (session_env) + *pp++ = session_env; + if (audio_env) + *pp++ = audio_env; + + *pp = NULL; + } + } + + if (program && args) + { + if (verbose) + { + printf("\t%s\n", program); + printf("\t"); + for (pp = args; *pp; pp++) + printf ("%s ", *pp); + printf("\n"); + } + + GetRestartInfo (restart_service_prop, client->clientHostname, + &run_local, &restart_protocol, &restart_machine); + + if (run_local) + { + /* + * The client is being cloned on the local machine. + */ + + char msg[256]; + + switch(fork()) { + case -1: + sprintf (msg, "%s: Can't fork() %s", Argv[0], program); + add_log_text (msg); + perror (msg); + break; + case 0: /* kid */ + chdir(cwd); + if(env) environ = env; + execvp(program, args); + sprintf (msg, "%s: Can't execvp() %s", Argv[0], program); + perror (msg); + /* + * TODO : We would like to send this log information to the + * log window in the parent. This would require opening + * a pipe between the parent and child. The child would + * set close-on-exec. If the exec succeeds, the pipe will + * be closed. If it fails, the child can write a message + * to the parent. + */ + _exit(255); + default: /* parent */ + break; + } + } + else if (!remote_allowed) + { + fprintf(stderr, + "Can't remote clone client ID '%s': only local supported\n", + client->clientId); + } + else + { + /* + * The client is being cloned on a remote machine. + */ + + remote_start (restart_protocol, restart_machine, + program, args, cwd, env, + non_local_display_env, non_local_session_env); + } + + if (restart_protocol) + XtFree (restart_protocol); + + if (restart_machine) + XtFree (restart_machine); + + } + else + { +#ifdef XKB + XkbStdBell(XtDisplay(topLevel),XtWindow(topLevel),0,XkbBI_Failure); +#else + XBell (XtDisplay (topLevel), 0); +#endif + + fprintf(stderr, "Can't restart ID '%s': no program or no args\n", + client->clientId); + } + + if (args) + XtFree ((char *)args); + if (env) + XtFree ((char *)env); +} + + + +void +StartDefaultApps () + +{ + FILE *f; + char *buf, *p, *home, filename[128]; + int buflen, len; + + /* + * First try ~/.xsmstartup, then system.xsm + */ + + home = (char *) getenv ("HOME"); + if (!home) + home = "."; + sprintf (filename, "%s/.xsmstartup", home); + + f = fopen (filename, "r"); + + if (!f) + { + f = fopen (SYSTEM_INIT_FILE, "r"); + if (!f) + { + printf ("Could not find default apps file. Make sure you did\n"); + printf ("a 'make install' in the xsm build directory.\n"); + exit (1); + } + } + + buf = NULL; + buflen = 0; + + while (getline(&buf, &buflen, f)) + { + char logtext[256]; + + if (buf[0] == '!') + continue; /* a comment */ + + if ((p = strchr (buf, '\n'))) + *p = '\0'; + + sprintf (logtext, "Starting locally : %s\n", buf); + add_log_text (logtext); + + len = strlen (buf); + + buf[len] = '&'; + buf[len+1] = '\0'; + + /* let the shell parse the stupid args */ + + execute_system_command (buf); + } + + if (buf) + free (buf); +} + + + +void +StartNonSessionAwareApps () + +{ + char logtext[256]; + int i; + + for (i = 0; i < non_session_aware_count; i++) + { + /* + * Let the shell parse the stupid args. We need to add an "&" + * at the end of the command. We previously allocated an extra + * byte for this. + */ + + sprintf (logtext, "Restarting locally : %s\n", + non_session_aware_clients[i]); + add_log_text (logtext); + + strcat (non_session_aware_clients[i], "&"); + execute_system_command (non_session_aware_clients[i]); + free ((char *) non_session_aware_clients[i]); + } + + if (non_session_aware_clients) + { + free ((char *) non_session_aware_clients); + non_session_aware_clients = NULL; + } +} |