Dogcows Code - chaz/openbox/blob - openbox/session.c

   1 /* This session code is largely inspired by metacity code. */
   2
   3 #ifndef USE_SM
   4
   5 void session_load(char *path) {}
   6 void session_startup(int argc, char **argv) {}
   7 void session_shutdown() {}
   8 ObSessionState* session_state_find(struct _ObClient *c) { return NULL; }
   9 void session_state_free(ObSessionState *state) {}
  10
  11 #else
  12
  13 #include "debug.h"
  14 #include "openbox.h"
  15 #include "session.h"
  16 #include "client.h"
  17 #include "prop.h"
  18 #include "parser/parse.h"
  19
  20 #include <time.h>
  21 #include <errno.h>
  22 #include <stdio.h>
  23
  24 #ifdef HAVE_UNISTD_H
  25 #  include <sys/types.h>
  26 #  include <unistd.h>
  27 #endif
  28
  29 #include <X11/SM/SMlib.h>
  30
  31 static SmcConn     sm_conn;
  32 static gchar      *save_file;
  33 static gint        sm_argc;
  34 static gchar     **sm_argv;
  35 static GSList     *sm_saved_state;
  36
  37 static gboolean session_save();
  38
  39 static void sm_save_yourself(SmcConn conn, SmPointer data, int save_type,
  40                              Bool shutdown, int interact_style, Bool fast);
  41 static void sm_die(SmcConn conn, SmPointer data);
  42 static void sm_save_complete(SmcConn conn, SmPointer data);
  43 static void sm_shutdown_cancelled(SmcConn conn, SmPointer data);
  44
  45 static void save_commands()
  46 {
  47     SmProp *props[2];
  48     SmProp prop_cmd = { SmCloneCommand, SmLISTofARRAY8, 1, };
  49     SmProp prop_res = { SmRestartCommand, SmLISTofARRAY8, };
  50     gint i, j, n;
  51     gboolean has_id = FALSE, has_file = FALSE;
  52
  53     for (i = 1; !has_id && !has_file && i < sm_argc - 1; ++i) {
  54         if (!has_id && strcmp(sm_argv[i], "--sm-client-id") == 0)
  55             has_id = TRUE;
  56         if (!has_file && strcmp(sm_argv[i], "--sm-save-file") == 0)
  57             has_file = TRUE;
  58     }
  59
  60     n = (has_file ? sm_argc-2 : sm_argc);
  61     n = (has_id ? n-2 : n);
  62     prop_cmd.vals = g_new(SmPropValue, n);
  63     prop_cmd.num_vals = n;
  64     for (i = 0, j = 0; i < sm_argc; ++i, ++j) {
  65         if (strcmp (sm_argv[i], "--sm-client-id") == 0 ||
  66             strcmp (sm_argv[i], "--sm-save-file") == 0) {
  67             ++i, --j; /* skip the next as well, keep j where it is */
  68         } else {
  69             prop_cmd.vals[j].value = sm_argv[i];
  70             prop_cmd.vals[j].length = strlen(sm_argv[i]);
  71         }
  72     }
  73
  74     n = (has_file ? sm_argc : sm_argc+2);
  75     n = (has_id ? n-2 : n);
  76     prop_res.vals = g_new(SmPropValue, n);
  77     prop_res.num_vals = n;
  78     for (i = 0, j = 0; i < sm_argc; ++i, ++j) {
  79         if (strcmp (sm_argv[i], "--sm-client-id") == 0 ||
  80             strcmp (sm_argv[i], "--sm-save-file") == 0) {
  81             ++i, --j; /* skip the next as well, keep j where it is */
  82         } else {
  83             prop_res.vals[j].value = sm_argv[i];
  84             prop_res.vals[j].length = strlen(sm_argv[i]);
  85         }
  86     }
  87
  88     if (save_file) {
  89         prop_res.vals[j].value = "--sm-save-file";
  90         prop_res.vals[j++].length = strlen("--sm-save-file");
  91         prop_res.vals[j].value = save_file;
  92         prop_res.vals[j++].length = strlen(save_file);
  93     } else {
  94         prop_res.vals[j].value = "--sm-client-id";
  95         prop_res.vals[j++].length = strlen("--sm-client-id");
  96         prop_res.vals[j].value = ob_sm_id;
  97         prop_res.vals[j++].length = strlen(ob_sm_id);
  98     }
  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 void session_startup(int argc, char **argv)
 109 {
 110 #define SM_ERR_LEN 1024
 111
 112     SmcCallbacks cb;
 113     char sm_err[SM_ERR_LEN];
 114
 115     sm_argc = argc;
 116     sm_argv = argv;
 117
 118     cb.save_yourself.callback = sm_save_yourself;
 119     cb.save_yourself.client_data = NULL;
 120
 121     cb.die.callback = sm_die;
 122     cb.die.client_data = NULL;
 123
 124     cb.save_complete.callback = sm_save_complete;
 125     cb.save_complete.client_data = NULL;
 126
 127     cb.shutdown_cancelled.callback = sm_shutdown_cancelled;
 128     cb.shutdown_cancelled.client_data = NULL;
 129
 130     sm_conn = SmcOpenConnection(NULL, NULL, 1, 0,
 131                                 SmcSaveYourselfProcMask |
 132                                 SmcDieProcMask |
 133                                 SmcSaveCompleteProcMask |
 134                                 SmcShutdownCancelledProcMask,
 135                                 &cb, ob_sm_id, &ob_sm_id,
 136                                 SM_ERR_LEN, sm_err);
 137     if (sm_conn == NULL)
 138         g_warning("Failed to connect to session manager: %s", sm_err);
 139     else {
 140         SmPropValue val_prog;
 141         SmPropValue val_uid;
 142         SmPropValue val_hint;
 143         SmPropValue val_pri;
 144         SmPropValue val_pid;
 145         SmProp prop_prog = { SmProgram, SmARRAY8, 1, };
 146         SmProp prop_uid = { SmUserID, SmARRAY8, 1, };
 147         SmProp prop_hint = { SmRestartStyleHint, SmCARD8, 1, };
 148         SmProp prop_pid = { SmProcessID, SmARRAY8, 1, };
 149         SmProp prop_pri = { "_GSM_Priority", SmCARD8, 1, };
 150         SmProp *props[6];
 151         gchar hint, pri;
 152         gchar pid[32];
 153
 154         val_prog.value = argv[0];
 155         val_prog.length = strlen(argv[0]);
 156
 157         val_uid.value = g_strdup(g_get_user_name());
 158         val_uid.length = strlen(val_uid.value);
 159
 160         hint = SmRestartImmediately;
 161         val_hint.value = &hint;
 162         val_hint.length = 1;
 163
 164         sprintf(pid, "%ld", (long)getpid());
 165         val_pid.value = pid;
 166         val_pid.length = strlen(pid);
 167
 168         /* priority with gnome-session-manager, low to run before other apps */
 169         pri = 20;
 170         val_pri.value = &pri;
 171         val_pri.length = 1;
 172
 173         prop_prog.vals = &val_prog;
 174         prop_uid.vals = &val_uid;
 175         prop_hint.vals = &val_hint;
 176         prop_pid.vals = &val_pid;
 177         prop_pri.vals = &val_pri;
 178
 179         props[0] = &prop_prog;
 180         props[1] = &prop_uid;
 181         props[2] = &prop_hint;
 182         props[3] = &prop_pid;
 183         props[4] = &prop_pri;
 184
 185         SmcSetProperties(sm_conn, 5, props);
 186
 187         g_free(val_uid.value);
 188
 189         save_commands();
 190
 191         ob_debug("Connected to session manager with id %s\n", ob_sm_id);
 192     }
 193 }
 194
 195 void session_shutdown()
 196 {
 197     g_free(save_file);
 198
 199     if (sm_conn) {
 200         SmPropValue val_hint;
 201         SmProp prop_hint = { SmRestartStyleHint, SmCARD8, 1, };
 202         SmProp *props[1];
 203         gulong hint;
 204
 205         /* when we exit, we want to reset this to a more friendly state */
 206         hint = SmRestartIfRunning;
 207         val_hint.value = &hint;
 208         val_hint.length = 1;
 209
 210         prop_hint.vals = &val_hint;
 211
 212         props[0] = &prop_hint;
 213
 214         SmcSetProperties(sm_conn, 1, props);
 215
 216         SmcCloseConnection(sm_conn, 0, NULL);
 217     }
 218 }
 219
 220 static void sm_save_yourself_phase2(SmcConn conn, SmPointer data)
 221 {
 222     gboolean success;
 223
 224     ob_debug("got SAVE YOURSELF PHASE 2 from session manager\n");
 225
 226     success = session_save();
 227     save_commands();
 228
 229     SmcSaveYourselfDone(conn, success);
 230 }
 231
 232 static void sm_save_yourself(SmcConn conn, SmPointer data, int save_type,
 233                              Bool shutdown, int interact_style, Bool fast)
 234 {
 235     ob_debug("got SAVE YOURSELF from session manager\n");
 236
 237     if (!SmcRequestSaveYourselfPhase2(conn, sm_save_yourself_phase2, data)) {
 238         ob_debug("SAVE YOURSELF PHASE 2 failed\n");
 239         SmcSaveYourselfDone(conn, FALSE);
 240     }
 241 }
 242
 243 static void sm_die(SmcConn conn, SmPointer data)
 244 {
 245     ob_exit();
 246     ob_debug("got DIE from session manager\n");
 247 }
 248
 249 static void sm_save_complete(SmcConn conn, SmPointer data)
 250 {
 251     ob_debug("got SAVE COMPLETE from session manager\n");
 252 }
 253
 254 static void sm_shutdown_cancelled(SmcConn conn, SmPointer data)
 255 {
 256     ob_debug("got SHUTDOWN CANCELLED from session manager\n");
 257 }
 258
 259 static gboolean session_save()
 260 {
 261     gchar *filename;
 262     FILE *f;
 263     GList *it;
 264     gboolean success = TRUE;
 265
 266     /* this algo is from metacity */
 267     filename = g_strdup_printf("%d-%d-%u.obs",
 268                                (int) time(NULL),
 269                                (int) getpid(),
 270                                g_random_int());
 271     save_file = g_build_filename(g_get_home_dir(), ".openbox", "sessions",
 272                                  filename, NULL);
 273     g_free(filename);
 274
 275     f = fopen(save_file, "w");
 276     if (!f) {
 277         success = FALSE;
 278         g_warning("unable to save the session to %s: %s",
 279                   save_file, strerror(errno));
 280     } else {
 281         fprintf(f, "<?xml version=\"1.0\"?>\n\n");
 282         fprintf(f, "<openbox_session id=\"%s\">\n\n", ob_sm_id);
 283
 284         for (it = client_list; it; it = g_list_next(it)) {
 285             guint num;
 286             gint32 *dimensions;
 287             gint prex, prey, prew, preh;
 288             ObClient *c = it->data;
 289             gchar *client_id, *t;
 290
 291             if (!client_normal(c))
 292                 continue;
 293
 294             if (!(client_id = client_get_sm_client_id(c)))
 295                 continue;
 296
 297             prex = c->area.x;
 298             prey = c->area.y;
 299             prew = c->area.width;
 300             preh = c->area.height;
 301             if (PROP_GETA32(c->window, openbox_premax, cardinal,
 302                             (guint32**)&dimensions, &num)) {
 303                 if (num == 4) {
 304                     prex = dimensions[0];
 305                     prey = dimensions[1];
 306                     prew = dimensions[2];
 307                     preh = dimensions[3];
 308                 }
 309                 g_free(dimensions);
 310             }
 311
 312             fprintf(f, "<window id=\"%s\">\n", client_id);
 313
 314             t = g_markup_escape_text(c->name, -1);
 315             fprintf(f, "\t<name>%s</name>\n", t);
 316             g_free(t);
 317
 318             t = g_markup_escape_text(c->class, -1);
 319             fprintf(f, "\t<class>%s</class>\n", t);
 320             g_free(t);
 321
 322             t = g_markup_escape_text(c->role, -1);
 323             fprintf(f, "\t<role>%s</role>\n", t);
 324             g_free(t);
 325
 326             fprintf(f, "\t<desktop>%d</desktop>\n", c->desktop);
 327             fprintf(f, "\t<x>%d</x>\n", prex);
 328             fprintf(f, "\t<y>%d</y>\n", prey);
 329             fprintf(f, "\t<width>%d</width>\n", prew);
 330             fprintf(f, "\t<height>%d</height>\n", preh);
 331             if (c->shaded)
 332                 fprintf(f, "\t<shaded />\n");
 333             if (c->iconic)
 334                 fprintf(f, "\t<iconic />\n");
 335             if (c->skip_pager)
 336                 fprintf(f, "\t<skip_pager />\n");
 337             if (c->skip_taskbar)
 338                 fprintf(f, "\t<skip_taskbar />\n");
 339             if (c->fullscreen)
 340                 fprintf(f, "\t<fullscreen />\n");
 341             if (c->above)
 342                 fprintf(f, "\t<above />\n");
 343             if (c->below)
 344                 fprintf(f, "\t<below />\n");
 345             if (c->max_horz)
 346                 fprintf(f, "\t<max_horz />\n");
 347             if (c->max_vert)
 348                 fprintf(f, "\t<max_vert />\n");
 349             fprintf(f, "</window>\n\n");
 350
 351             g_free(client_id);
 352         }
 353
 354         fprintf(f, "</openbox_session>\n");
 355
 356         if (fflush(f)) {
 357             success = FALSE;
 358             g_warning("error while saving the session to %s: %s",
 359                       save_file, strerror(errno));
 360         }
 361         fclose(f);
 362     }
 363
 364     return success;
 365 }
 366
 367 void session_state_free(ObSessionState *state)
 368 {
 369     if (state) {
 370         g_free(state->id);
 371         g_free(state->name);
 372         g_free(state->class);
 373         g_free(state->role);
 374
 375         g_free(state);
 376     }
 377 }
 378
 379 static gboolean session_state_cmp(ObSessionState *s, ObClient *c)
 380 {
 381     gchar *client_id;
 382
 383     if (!(client_id = client_get_sm_client_id(c)))
 384         return FALSE;
 385     g_print("\nsaved %s\nnow %s\n", s->id, client_id);
 386     if (strcmp(s->id, client_id)) {
 387         g_free(client_id);
 388         return FALSE;
 389     }
 390     g_free(client_id);
 391     g_print("saved %s\nnow %s\n", s->name, c->name);
 392     if (strcmp(s->name, c->name))
 393         return FALSE;
 394     g_print("saved %s\nnow %s\n", s->class, c->class);
 395     if (strcmp(s->class, c->class))
 396         return FALSE;
 397     g_print("saved %s\nnow %s\n\n", s->role, c->role);
 398     if (strcmp(s->role, c->role))
 399         return FALSE;
 400     return TRUE;
 401 }
 402
 403 ObSessionState* session_state_find(ObClient *c)
 404 {
 405     GSList *it;
 406
 407     for (it = sm_saved_state; it; it = g_slist_next(it))
 408         if (session_state_cmp(it->data, c)) {
 409             ObSessionState *s = it->data;
 410             sm_saved_state = g_slist_remove(sm_saved_state, s);
 411             return s;
 412         }
 413     return NULL;
 414 }
 415
 416 void session_load(char *path)
 417 {
 418     xmlDocPtr doc;
 419     xmlNodePtr node, n;
 420     gchar *sm_id;
 421
 422     g_message("loading session from %s", path);
 423
 424     if (!parse_load(path, "openbox_session", &doc, &node))
 425         return;
 426
 427     if (!parse_attr_string("id", node, &sm_id))
 428         return;
 429     ob_sm_id = g_strdup(sm_id);
 430
 431     node = parse_find_node("window", node->xmlChildrenNode);
 432     while (node) {
 433         ObSessionState *state;
 434
 435         state = g_new0(ObSessionState, 1);
 436
 437         if (!parse_attr_string("id", node, &state->id))
 438             goto session_load_bail;
 439         if (!(n = parse_find_node("name", node->xmlChildrenNode)))
 440             goto session_load_bail;
 441         state->name = parse_string(doc, n);
 442         if (!(n = parse_find_node("class", node->xmlChildrenNode)))
 443             goto session_load_bail;
 444         state->class = parse_string(doc, n);
 445         if (!(n = parse_find_node("role", node->xmlChildrenNode)))
 446             goto session_load_bail;
 447         state->role = parse_string(doc, n);
 448         if (!(n = parse_find_node("desktop", node->xmlChildrenNode)))
 449             goto session_load_bail;
 450         state->desktop = parse_int(doc, n);
 451         if (!(n = parse_find_node("x", node->xmlChildrenNode)))
 452             goto session_load_bail;
 453         state->x = parse_int(doc, n);
 454         if (!(n = parse_find_node("y", node->xmlChildrenNode)))
 455             goto session_load_bail;
 456         state->y = parse_int(doc, n);
 457         if (!(n = parse_find_node("width", node->xmlChildrenNode)))
 458             goto session_load_bail;
 459         state->w = parse_int(doc, n);
 460         if (!(n = parse_find_node("height", node->xmlChildrenNode)))
 461             goto session_load_bail;
 462         state->h = parse_int(doc, n);
 463
 464         state->shaded =
 465             parse_find_node("shaded", node->xmlChildrenNode) != NULL;
 466         state->iconic =
 467             parse_find_node("iconic", node->xmlChildrenNode) != NULL;
 468         state->skip_pager =
 469             parse_find_node("skip_pager", node->xmlChildrenNode) != NULL;
 470         state->skip_taskbar =
 471             parse_find_node("skip_taskbar", node->xmlChildrenNode) != NULL;
 472         state->fullscreen =
 473             parse_find_node("fullscreen", node->xmlChildrenNode) != NULL;
 474         state->above =
 475             parse_find_node("above", node->xmlChildrenNode) != NULL;
 476         state->below =
 477             parse_find_node("below", node->xmlChildrenNode) != NULL;
 478         state->max_horz =
 479             parse_find_node("max_horz", node->xmlChildrenNode) != NULL;
 480         state->max_vert =
 481             parse_find_node("max_vert", node->xmlChildrenNode) != NULL;
 482
 483         g_message("read session window %s", state->name);
 484
 485         /* save this */
 486         g_message("saved state for %s %s", state->name, state->id);
 487         sm_saved_state = g_slist_prepend(sm_saved_state, state);
 488         goto session_load_ok;
 489
 490     session_load_bail:
 491         session_state_free(state);
 492
 493     session_load_ok:
 494
 495         node = parse_find_node("window", node->next);
 496     }
 497
 498     xmlFreeDoc(doc);
 499 }
 500
 501 #endif