openbox/session.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    session.c for the Openbox window manager
   4    Copyright (c) 2003        Ben Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 /* This session code is largely inspired by metacity code. */
  20
  21 #ifndef USE_SM
  22
  23 #include "session.h"
  24 #include "client.h"
  25
  26 GList *session_saved_state;
  27
  28 void session_startup(gint *argc, gchar ***argv) {}
  29 void session_shutdown() {}
  30 GList* session_state_find(ObClient *c) { return NULL; }
  31 gboolean session_state_cmp(ObSessionState *s, ObClient *c) { return FALSE; }
  32 void session_state_free(ObSessionState *state) {}
  33
  34 #else
  35
  36 #include "debug.h"
  37 #include "openbox.h"
  38 #include "session.h"
  39 #include "client.h"
  40 #include "prop.h"
  41 #include "gettext.h"
  42 #include "parser/parse.h"
  43
  44 #include <time.h>
  45 #include <errno.h>
  46 #include <stdio.h>
  47
  48 #ifdef HAVE_UNISTD_H
  49 #  include <sys/types.h>
  50 #  include <unistd.h>
  51 #endif
  52
  53 #include <X11/SM/SMlib.h>
  54
  55 GList *session_saved_state;
  56
  57 static gboolean    sm_disable;
  58 static SmcConn     sm_conn;
  59 static gchar      *save_file;
  60 static gchar      *sm_id;
  61 static gint        sm_argc;
  62 static gchar     **sm_argv;
  63 static gchar      *sm_sessions_path;
  64
  65 static void session_load(gchar *path);
  66 static gboolean session_save();
  67
  68 static void sm_save_yourself(SmcConn conn, SmPointer data, gint save_type,
  69                              Bool shutdown, gint interact_style, Bool fast);
  70 static void sm_die(SmcConn conn, SmPointer data);
  71 static void sm_save_complete(SmcConn conn, SmPointer data);
  72 static void sm_shutdown_cancelled(SmcConn conn, SmPointer data);
  73
  74 static void save_commands()
  75 {
  76     SmProp *props[2];
  77     SmProp prop_cmd = { SmCloneCommand, SmLISTofARRAY8, 1, };
  78     SmProp prop_res = { SmRestartCommand, SmLISTofARRAY8, };
  79     gint i;
  80
  81     prop_cmd.vals = g_new(SmPropValue, sm_argc);
  82     prop_cmd.num_vals = sm_argc;
  83     for (i = 0; i < sm_argc; ++i) {
  84         prop_cmd.vals[i].value = sm_argv[i];
  85         prop_cmd.vals[i].length = strlen(sm_argv[i]);
  86     }
  87
  88     prop_res.vals = g_new(SmPropValue, sm_argc + 2);
  89     prop_res.num_vals = sm_argc + 2;
  90     for (i = 0; i < sm_argc; ++i) {
  91         prop_res.vals[i].value = sm_argv[i];
  92         prop_res.vals[i].length = strlen(sm_argv[i]);
  93     }
  94
  95     prop_res.vals[i].value = "--sm-save-file";
  96     prop_res.vals[i++].length = strlen("--sm-save-file");
  97     prop_res.vals[i].value = save_file;
  98     prop_res.vals[i++].length = strlen(save_file);
  99
 100     props[0] = &prop_res;
 101     props[1] = &prop_cmd;
 102     SmcSetProperties(sm_conn, 2, props);
 103
 104     g_free(prop_res.vals);
 105     g_free(prop_cmd.vals);
 106 }
 107
 108 static void remove_args(gint *argc, gchar ***argv, gint index, gint num)
 109 {
 110     gint i;
 111
 112     for (i = index; i < index + num; ++i)
 113         (*argv)[i] = (*argv)[i+num];
 114     *argc -= num;
 115 }
 116
 117 static void parse_args(gint *argc, gchar ***argv)
 118 {
 119     gint i;
 120
 121     for (i = 1; i < *argc; ++i) {
 122         if (!strcmp((*argv)[i], "--sm-client-id")) {
 123             if (i == *argc - 1) /* no args left */
 124                 g_printerr(_("--sm-client-id requires an argument\n"));
 125             else {
 126                 sm_id = g_strdup((*argv)[i+1]);
 127                 remove_args(argc, argv, i, 2);
 128                 ++i;
 129             }
 130         } else if (!strcmp((*argv)[i], "--sm-save-file")) {
 131             if (i == *argc - 1) /* no args left */
 132                 g_printerr(_("--sm-save-file requires an argument\n"));
 133             else {
 134                 save_file = g_strdup((*argv)[i+1]);
 135                 remove_args(argc, argv, i, 2);
 136                 ++i;
 137             }
 138         } else if (!strcmp((*argv)[i], "--sm-disable")) {
 139             sm_disable = TRUE;
 140             remove_args(argc, argv, i, 1);
 141         }
 142     }
 143 }
 144
 145 void session_startup(gint *argc, gchar ***argv)
 146 {
 147 #define SM_ERR_LEN 1024
 148
 149     SmcCallbacks cb;
 150     gchar sm_err[SM_ERR_LEN];
 151
 152     parse_args(argc, argv);
 153
 154     if (sm_disable)
 155         return;
 156
 157     sm_sessions_path = g_build_filename(parse_xdg_data_home_path(),
 158                                         "openbox", "sessions", NULL);
 159     if (!parse_mkdir_path(sm_sessions_path, 0700))
 160         g_warning(_("Unable to make directory '%s': %s"),
 161                   sm_sessions_path, g_strerror(errno));
 162
 163     if (save_file)
 164         session_load(save_file);
 165     else {
 166         gchar *filename;
 167
 168         /* this algo is from metacity */
 169         filename = g_strdup_printf("%d-%d-%u.obs",
 170                                    (gint) time(NULL),
 171                                    (gint) getpid(),
 172                                    g_random_int());
 173         save_file = g_build_filename(sm_sessions_path, filename, NULL);
 174         g_free(filename);
 175     }
 176
 177     sm_argc = *argc;
 178     sm_argv = *argv;
 179
 180     cb.save_yourself.callback = sm_save_yourself;
 181     cb.save_yourself.client_data = NULL;
 182
 183     cb.die.callback = sm_die;
 184     cb.die.client_data = NULL;
 185
 186     cb.save_complete.callback = sm_save_complete;
 187     cb.save_complete.client_data = NULL;
 188
 189     cb.shutdown_cancelled.callback = sm_shutdown_cancelled;
 190     cb.shutdown_cancelled.client_data = NULL;
 191
 192     sm_conn = SmcOpenConnection(NULL, NULL, 1, 0,
 193                                 SmcSaveYourselfProcMask |
 194                                 SmcDieProcMask |
 195                                 SmcSaveCompleteProcMask |
 196                                 SmcShutdownCancelledProcMask,
 197                                 &cb, sm_id, &sm_id,
 198                                 SM_ERR_LEN, sm_err);
 199     if (sm_conn == NULL)
 200         ob_debug("Failed to connect to session manager: %s\n", sm_err);
 201     else {
 202         SmPropValue val_prog;
 203         SmPropValue val_uid;
 204         SmPropValue val_hint;
 205         SmPropValue val_pri;
 206         SmPropValue val_pid;
 207         SmProp prop_prog = { SmProgram, SmARRAY8, 1, };
 208         SmProp prop_uid = { SmUserID, SmARRAY8, 1, };
 209         SmProp prop_hint = { SmRestartStyleHint, SmCARD8, 1, };
 210         SmProp prop_pid = { SmProcessID, SmARRAY8, 1, };
 211         SmProp prop_pri = { "_GSM_Priority", SmCARD8, 1, };
 212         SmProp *props[6];
 213         gchar hint, pri;
 214         gchar pid[32];
 215
 216         val_prog.value = sm_argv[0];
 217         val_prog.length = strlen(sm_argv[0]);
 218
 219         val_uid.value = g_strdup(g_get_user_name());
 220         val_uid.length = strlen(val_uid.value);
 221
 222         hint = SmRestartImmediately;
 223         val_hint.value = &hint;
 224         val_hint.length = 1;
 225
 226         g_snprintf(pid, sizeof(pid), "%ld", (glong) getpid());
 227         val_pid.value = pid;
 228         val_pid.length = strlen(pid);
 229
 230         /* priority with gnome-session-manager, low to run before other apps */
 231         pri = 20;
 232         val_pri.value = &pri;
 233         val_pri.length = 1;
 234
 235         prop_prog.vals = &val_prog;
 236         prop_uid.vals = &val_uid;
 237         prop_hint.vals = &val_hint;
 238         prop_pid.vals = &val_pid;
 239         prop_pri.vals = &val_pri;
 240
 241         props[0] = &prop_prog;
 242         props[1] = &prop_uid;
 243         props[2] = &prop_hint;
 244         props[3] = &prop_pid;
 245         props[4] = &prop_pri;
 246
 247         SmcSetProperties(sm_conn, 5, props);
 248
 249         g_free(val_uid.value);
 250
 251         save_commands();
 252     }
 253 }
 254
 255 void session_shutdown()
 256 {
 257     g_free(sm_sessions_path);
 258     g_free(save_file);
 259     g_free(sm_id);
 260
 261     if (sm_conn) {
 262         SmPropValue val_hint;
 263         SmProp prop_hint = { SmRestartStyleHint, SmCARD8, 1, };
 264         SmProp *props[1];
 265         gulong hint;
 266
 267         /* when we exit, we want to reset this to a more friendly state */
 268         hint = SmRestartIfRunning;
 269         val_hint.value = &hint;
 270         val_hint.length = 1;
 271
 272         prop_hint.vals = &val_hint;
 273
 274         props[0] = &prop_hint;
 275
 276         SmcSetProperties(sm_conn, 1, props);
 277
 278         SmcCloseConnection(sm_conn, 0, NULL);
 279
 280         while (session_saved_state) {
 281             session_state_free(session_saved_state->data);
 282             session_saved_state = g_list_delete_link(session_saved_state,
 283                                                      session_saved_state);
 284         }
 285     }
 286 }
 287
 288 static void sm_save_yourself_phase2(SmcConn conn, SmPointer data)
 289 {
 290     gboolean success;
 291
 292     success = session_save();
 293     save_commands();
 294
 295     SmcSaveYourselfDone(conn, success);
 296 }
 297
 298 static void sm_save_yourself(SmcConn conn, SmPointer data, gint save_type,
 299                              Bool shutdown, gint interact_style, Bool fast)
 300 {
 301     if (!SmcRequestSaveYourselfPhase2(conn, sm_save_yourself_phase2, data)) {
 302         ob_debug("SAVE YOURSELF PHASE 2 failed\n");
 303         SmcSaveYourselfDone(conn, FALSE);
 304     }
 305 }
 306
 307 static void sm_die(SmcConn conn, SmPointer data)
 308 {
 309     ob_exit(0);
 310 }
 311
 312 static void sm_save_complete(SmcConn conn, SmPointer data)
 313 {
 314 }
 315
 316 static void sm_shutdown_cancelled(SmcConn conn, SmPointer data)
 317 {
 318 }
 319
 320 static gboolean session_save()
 321 {
 322     FILE *f;
 323     GList *it;
 324     gboolean success = TRUE;
 325
 326     f = fopen(save_file, "w");
 327     if (!f) {
 328         success = FALSE;
 329         g_warning("unable to save the session to %s: %s",
 330                   save_file, g_strerror(errno));
 331     } else {
 332         guint stack_pos = 0;
 333
 334         fprintf(f, "<?xml version=\"1.0\"?>\n\n");
 335         fprintf(f, "<openbox_session id=\"%s\">\n\n", sm_id);
 336
 337         for (it = stacking_list; it; it = g_list_next(it)) {
 338             gint prex, prey, prew, preh;
 339             ObClient *c;
 340             gchar *t;
 341
 342             if (WINDOW_IS_CLIENT(it->data))
 343                 c = WINDOW_AS_CLIENT(it->data);
 344             else
 345                 continue;
 346
 347             if (!client_normal(c))
 348                 continue;
 349
 350             if (!c->sm_client_id)
 351                 continue;
 352
 353             prex = c->area.x;
 354             prey = c->area.y;
 355             prew = c->area.width;
 356             preh = c->area.height;
 357             if (c->fullscreen) {
 358                 prex = c->pre_fullscreen_area.x;
 359                 prey = c->pre_fullscreen_area.x;
 360                 prew = c->pre_fullscreen_area.width;
 361                 preh = c->pre_fullscreen_area.height;
 362             }
 363             if (c->max_horz) {
 364                 prex = c->pre_max_area.x;
 365                 prew = c->pre_max_area.width;
 366             }
 367             if (c->max_vert) {
 368                 prey = c->pre_max_area.y;
 369                 preh = c->pre_max_area.height;
 370             }
 371
 372             fprintf(f, "<window id=\"%s\">\n", c->sm_client_id);
 373
 374             t = g_markup_escape_text(c->name, -1);
 375             fprintf(f, "\t<name>%s</name>\n", t);
 376             g_free(t);
 377
 378             t = g_markup_escape_text(c->class, -1);
 379             fprintf(f, "\t<class>%s</class>\n", t);
 380             g_free(t);
 381
 382             t = g_markup_escape_text(c->role, -1);
 383             fprintf(f, "\t<role>%s</role>\n", t);
 384             g_free(t);
 385
 386             fprintf(f, "\t<desktop>%d</desktop>\n", c->desktop);
 387             fprintf(f, "\t<stacking>%d</stacking>\n", stack_pos);
 388             fprintf(f, "\t<x>%d</x>\n", prex);
 389             fprintf(f, "\t<y>%d</y>\n", prey);
 390             fprintf(f, "\t<width>%d</width>\n", prew);
 391             fprintf(f, "\t<height>%d</height>\n", preh);
 392             if (c->shaded)
 393                 fprintf(f, "\t<shaded />\n");
 394             if (c->iconic)
 395                 fprintf(f, "\t<iconic />\n");
 396             if (c->skip_pager)
 397                 fprintf(f, "\t<skip_pager />\n");
 398             if (c->skip_taskbar)
 399                 fprintf(f, "\t<skip_taskbar />\n");
 400             if (c->fullscreen)
 401                 fprintf(f, "\t<fullscreen />\n");
 402             if (c->above)
 403                 fprintf(f, "\t<above />\n");
 404             if (c->below)
 405                 fprintf(f, "\t<below />\n");
 406             if (c->max_horz)
 407                 fprintf(f, "\t<max_horz />\n");
 408             if (c->max_vert)
 409                 fprintf(f, "\t<max_vert />\n");
 410             fprintf(f, "</window>\n\n");
 411
 412             ++stack_pos;
 413         }
 414
 415         fprintf(f, "</openbox_session>\n");
 416
 417         if (fflush(f)) {
 418             success = FALSE;
 419             g_warning("error while saving the session to %s: %s",
 420                       save_file, g_strerror(errno));
 421         }
 422         fclose(f);
 423     }
 424
 425     return success;
 426 }
 427
 428 void session_state_free(ObSessionState *state)
 429 {
 430     if (state) {
 431         g_free(state->id);
 432         g_free(state->name);
 433         g_free(state->class);
 434         g_free(state->role);
 435
 436         g_free(state);
 437     }
 438 }
 439
 440 gboolean session_state_cmp(ObSessionState *s, ObClient *c)
 441 {
 442     return (c->sm_client_id &&
 443             !strcmp(s->id, c->sm_client_id) &&
 444             !strcmp(s->name, c->name) &&
 445             !strcmp(s->class, c->class) &&
 446             !strcmp(s->role, c->role));
 447 }
 448
 449 GList* session_state_find(ObClient *c)
 450 {
 451     GList *it;
 452
 453     for (it = session_saved_state; it; it = g_list_next(it)) {
 454         ObSessionState *s = it->data;
 455         if (!s->matched && session_state_cmp(s, c)) {
 456             s->matched = TRUE;
 457             break;
 458         }
 459     }
 460     return it;
 461 }
 462
 463 static gint stack_sort(const ObSessionState *s1, const ObSessionState *s2)
 464 {
 465     return s1->stacking - s2->stacking;
 466 }
 467
 468 static void session_load(gchar *path)
 469 {
 470     xmlDocPtr doc;
 471     xmlNodePtr node, n;
 472     gchar *id;
 473
 474     if (!parse_load(path, "openbox_session", &doc, &node))
 475         return;
 476
 477     if (!parse_attr_string("id", node, &id))
 478         return;
 479     g_free(sm_id);
 480     sm_id = id;
 481
 482     node = parse_find_node("window", node->children);
 483     while (node) {
 484         ObSessionState *state;
 485
 486         state = g_new0(ObSessionState, 1);
 487
 488         if (!parse_attr_string("id", node, &state->id))
 489             goto session_load_bail;
 490         if (!(n = parse_find_node("name", node->children)))
 491             goto session_load_bail;
 492         state->name = parse_string(doc, n);
 493         if (!(n = parse_find_node("class", node->children)))
 494             goto session_load_bail;
 495         state->class = parse_string(doc, n);
 496         if (!(n = parse_find_node("role", node->children)))
 497             goto session_load_bail;
 498         state->role = parse_string(doc, n);
 499         if (!(n = parse_find_node("stacking", node->children)))
 500             goto session_load_bail;
 501         state->stacking = parse_int(doc, n);
 502         if (!(n = parse_find_node("desktop", node->children)))
 503             goto session_load_bail;
 504         state->desktop = parse_int(doc, n);
 505         if (!(n = parse_find_node("x", node->children)))
 506             goto session_load_bail;
 507         state->x = parse_int(doc, n);
 508         if (!(n = parse_find_node("y", node->children)))
 509             goto session_load_bail;
 510         state->y = parse_int(doc, n);
 511         if (!(n = parse_find_node("width", node->children)))
 512             goto session_load_bail;
 513         state->w = parse_int(doc, n);
 514         if (!(n = parse_find_node("height", node->children)))
 515             goto session_load_bail;
 516         state->h = parse_int(doc, n);
 517
 518         state->shaded =
 519             parse_find_node("shaded", node->children) != NULL;
 520         state->iconic =
 521             parse_find_node("iconic", node->children) != NULL;
 522         state->skip_pager =
 523             parse_find_node("skip_pager", node->children) != NULL;
 524         state->skip_taskbar =
 525             parse_find_node("skip_taskbar", node->children) != NULL;
 526         state->fullscreen =
 527             parse_find_node("fullscreen", node->children) != NULL;
 528         state->above =
 529             parse_find_node("above", node->children) != NULL;
 530         state->below =
 531             parse_find_node("below", node->children) != NULL;
 532         state->max_horz =
 533             parse_find_node("max_horz", node->children) != NULL;
 534         state->max_vert =
 535             parse_find_node("max_vert", node->children) != NULL;
 536
 537         /* save this */
 538         session_saved_state = g_list_prepend(session_saved_state, state);
 539         goto session_load_ok;
 540
 541     session_load_bail:
 542         session_state_free(state);
 543
 544     session_load_ok:
 545
 546         node = parse_find_node("window", node->next);
 547     }
 548
 549     /* sort them by their stacking order */
 550     session_saved_state = g_list_sort(session_saved_state,
 551                                       (GCompareFunc)stack_sort);
 552
 553     xmlFreeDoc(doc);
 554 }
 555
 556 #endif