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/* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Initially inspired by xfwm, fvwm2, enlightment and twm implementations */
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <pwd.h>
#include <unistd.h>
#include <stdarg.h>
#include <sys/types.h>
#include <signal.h>
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <glib.h>
#include "session.h"
#include "main.h"
#include "hints.h"
#include "client.h"
typedef struct _match
{
unsigned long win;
unsigned long client_leader;
char *client_id;
char *res_name;
char *res_class;
char *window_role;
char *wm_name;
int wm_command_count;
char **wm_command;
int x;
int y;
int width;
int height;
int old_x;
int old_y;
int old_width;
int old_height;
int desktop;
unsigned long flags;
gboolean used;
}
Match;
static int num_match = 0;
static Match *matches = NULL;
static void my_free_string_list(gchar **list, gint n)
{
gchar **s;
gint i;
if (!list || !n)
{
return; /* silently... :) */
}
i = 0;
s = list;
while ((i < n) && (s))
{
g_free(*s);
*s = NULL;
s++;
i++;
}
}
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/*
2-pass function to compute new string length,
allocate memory and finally copy string
- Returned value must be freed -
*/
static gchar *escape_quote(gchar * s)
{
gchar *ns;
gchar *idx1, *idx2;
gint nbquotes = 0;
gint lg = 0;
g_return_val_if_fail(s != NULL, NULL);
lg = strlen(s);
/* First, count quotes in string */
idx1 = s;
while(*idx1)
{
if(*(idx1++) == '"')
nbquotes++;
}
/* If there is no quote in the string, return it */
if(!nbquotes)
return (g_strdup(s));
/* Or else, allocate memory for the new string */
ns = g_new(gchar, lg + nbquotes + 1);
/* And prepend a backslash before any quote found in string */
idx1 = s;
idx2 = ns;
while(*idx1)
{
if(*idx1 == '"')
{
*(idx2++) = '\\';
*(idx2++) = '"';
}
else
{
*(idx2++) = *idx1;
}
idx1++;
}
/* Add null char */
*idx2 = '\0';
return ns;
}
/*
single-pass function to replace backslash+quotes
by quotes.
- Returned value must be freed -
*/
static gchar *unescape_quote(gchar * s)
{
gchar *ns;
gboolean backslash;
gchar *idx1, *idx2;
gint lg;
g_return_val_if_fail(s != NULL, NULL);
lg = strlen(s);
backslash = FALSE;
ns = g_new(gchar, lg + 1);
idx1 = s;
idx2 = ns;
while(*idx1)
{
if(*idx1 == '\\')
{
*(idx2++) = *idx1;
backslash = TRUE;
}
else if((*idx1 == '"') && backslash)
{
/* Move backward to override the "\" */
*(--idx2) = *idx1;
idx2++;
backslash = FALSE;
}
else
{
*(idx2++) = *idx1;
backslash = FALSE;
}
idx1++;
}
*idx2 = '\0';
return ns;
}
static gchar *getsubstring(gchar * s, gint * length)
{
gchar pbrk;
gchar *ns;
gchar *end, *idx1, *idx2, *skip;
gint lg;
gboolean finished = FALSE, backslash = FALSE;
lg = *length = 0;
g_return_val_if_fail(s != NULL, NULL);
end = skip = s;
while((*skip == ' ') || (*skip == '\t'))
{
end = ++skip;
(*length)++;
}
if(*skip == '"')
{
pbrk = '"';
end = ++skip;
(*length)++;
}
else
{
pbrk = ' ';
}
finished = FALSE;
while((!finished) && (*end))
{
if(*end == '\\')
{
backslash = TRUE;
}
else if((*end == pbrk) && backslash)
{
backslash = FALSE;
}
else if(*end == pbrk)
{
finished = TRUE;
}
end++;
lg++;
(*length)++;
}
ns = g_new(gchar, lg + 1);
/* Skip pbrk character */
end--;
idx1 = skip;
idx2 = ns;
do
{
*(idx2++) = *idx1;
}
while(++idx1 < end);
*idx2 = '\0';
return ns;
}
gboolean sessionSaveWindowStates(gchar *filename)
{
FILE *f;
Client *c;
gint client_idx;
char *client_id = NULL;
char *window_role = NULL;
int wm_command_count = 0;
char **wm_command = NULL;
g_return_val_if_fail(filename != NULL, FALSE);
if((f = fopen(filename, "w")))
{
for(c = clients, client_idx = 0; client_idx < client_count; c = c->next, client_idx++)
{
if (c->client_leader != None)
{
getWindowRole(dpy, c->client_leader, &window_role);
}
else
{
window_role = NULL;
}
fprintf(f, "[CLIENT] 0x%lx\n", c->window);
getClientID(dpy, c->window, &client_id);
if(client_id)
fprintf(f, " [CLIENT_ID] %s\n", client_id);
XFree(client_id);
client_id = NULL;
}
if(c->client_leader)
{
fprintf(f, " [CLIENT_LEADER] 0x%lx\n", c->client_leader);
}
fprintf(f, " [WINDOW_ROLE] %s\n", window_role);
XFree(window_role);
window_role = NULL;
}
if(c->class.res_class)
{
fprintf(f, " [RES_NAME] %s\n", c->class.res_name);
}
if(c->class.res_name)
{
fprintf(f, " [RES_CLASS] %s\n", c->class.res_class);
}
if(c->name)
{
fprintf(f, " [WM_NAME] %s\n", c->name);
}
wm_command_count = 0;
getWindowCommand(dpy, c->window, &wm_command, &wm_command_count);
if((wm_command_count > 0) && (wm_command))
fprintf(f, " [WM_COMMAND] (%i)", wm_command_count);
for(j = 0; j < wm_command_count; j++)
{
gchar *escaped_string;
escaped_string = escape_quote(wm_command[j]);
fprintf(f, " \"%s\"", escaped_string);
g_free(escaped_string);
}
fprintf(f, "\n");
XFreeStringList(wm_command);
wm_command = NULL;
wm_command_count = 0;
}
fprintf(f, " [GEOMETRY] (%i,%i,%i,%i)\n", c->x, c->y, c->width, c->height);
fprintf(f, " [GEOMETRY-MAXIMIZED] (%i,%i,%i,%i)\n", c->old_x, c->old_y, c->old_width, c->old_height);
fprintf(f, " [DESK] %i\n", c->win_workspace);
fprintf(f, " [FLAGS] 0x%lx\n", CLIENT_FLAG_TEST(c, CLIENT_FLAG_STICKY | CLIENT_FLAG_HIDDEN | CLIENT_FLAG_SHADED | CLIENT_FLAG_MAXIMIZED | CLIENT_FLAG_NAME_CHANGED));
}
fclose(f);
return TRUE;
}
return FALSE;
}
gboolean sessionLoadWindowStates(gchar *filename)
{
FILE *f;
char s[4096], s1[4096];
int i, pos, pos1;
unsigned long w;
g_return_val_if_fail(filename != NULL, FALSE);
if((f = fopen(filename, "r")))
{
while(fgets(s, sizeof(s), f))
{
sscanf(s, "%4000s", s1);
if(!strcmp(s1, "[CLIENT]"))
{
sscanf(s, "%*s %lx", &w);
num_match++;
matches = g_realloc(matches, sizeof(Match) * num_match);
matches[num_match - 1].win = w;
matches[num_match - 1].client_id = NULL;
matches[num_match - 1].res_name = NULL;
matches[num_match - 1].res_class = NULL;
matches[num_match - 1].window_role = NULL;
matches[num_match - 1].wm_name = NULL;
matches[num_match - 1].wm_command_count = 0;
matches[num_match - 1].wm_command = NULL;
matches[num_match - 1].x = 0;
matches[num_match - 1].y = 0;
matches[num_match - 1].width = 100;
matches[num_match - 1].height = 100;
matches[num_match - 1].old_x = matches[num_match - 1].x;
matches[num_match - 1].old_y = matches[num_match - 1].y;
matches[num_match - 1].old_width = matches[num_match - 1].width;
matches[num_match - 1].old_height = matches[num_match - 1].height;
matches[num_match - 1].desktop = 0;
matches[num_match - 1].used = FALSE;
matches[num_match - 1].flags = 0;
}
else if(!strcmp(s1, "[GEOMETRY]"))
{
sscanf(s, "%*s (%i,%i,%i,%i)", &(matches[num_match - 1].x), &(matches[num_match - 1].y), &(matches[num_match - 1].width), &(matches[num_match - 1].height));
}
else if(!strcmp(s1, "[GEOMETRY-MAXIMIZED]"))
{
sscanf(s, "%*s (%i,%i,%i,%i)", &(matches[num_match - 1].old_x), &(matches[num_match - 1].old_y), &(matches[num_match - 1].old_width), &(matches[num_match - 1].old_height));
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}
else if(!strcmp(s1, "[DESK]"))
{
sscanf(s, "%*s %i", &(matches[num_match - 1].desktop));
}
else if(!strcmp(s1, "[CLIENT_LEADER]"))
{
sscanf(s, "%*s 0x%lx", &(matches[num_match - 1].client_leader));
}
else if(!strcmp(s1, "[FLAGS]"))
{
sscanf(s, "%*s 0x%lx", &(matches[num_match - 1].flags));
}
else if(!strcmp(s1, "[CLIENT_ID]"))
{
sscanf(s, "%*s %[^\n]", s1);
matches[num_match - 1].client_id = strdup(s1);
}
else if(!strcmp(s1, "[WINDOW_ROLE]"))
{
sscanf(s, "%*s %[^\n]", s1);
matches[num_match - 1].window_role = strdup(s1);
}
else if(!strcmp(s1, "[RES_NAME]"))
{
sscanf(s, "%*s %[^\n]", s1);
matches[num_match - 1].res_name = strdup(s1);
}
else if(!strcmp(s1, "[RES_CLASS]"))
{
sscanf(s, "%*s %[^\n]", s1);
matches[num_match - 1].res_class = strdup(s1);
}
else if(!strcmp(s1, "[WM_NAME]"))
{
sscanf(s, "%*s %[^\n]", s1);
matches[num_match - 1].wm_name = strdup(s1);
}
else if(!strcmp(s1, "[WM_COMMAND]"))
{
sscanf(s, "%*s (%i)%n", &matches[num_match - 1].wm_command_count, &pos);
matches[num_match - 1].wm_command = g_new (gchar *, matches[num_match - 1].wm_command_count + 1);
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for(i = 0; i < matches[num_match - 1].wm_command_count; i++)
{
gchar *substring;
substring = getsubstring(s + pos, &pos1);
pos += pos1;
matches[num_match - 1].wm_command[i] = unescape_quote(substring);
g_free(substring);
}
matches[num_match - 1].wm_command[matches[num_match - 1].wm_command_count] = NULL;
}
}
fclose(f);
return TRUE;
}
return FALSE;
}
void sessionFreeWindowStates(void)
{
int i;
for(i = 0; i < num_match; i++)
{
if(matches[i].client_id)
{
free(matches[i].client_id);
matches[i].client_id = NULL;
}
if(matches[i].res_name)
{
free(matches[i].res_name);
matches[i].res_name = NULL;
}
if(matches[i].res_class)
{
free(matches[i].res_class);
matches[i].res_class = NULL;
}
if(matches[i].window_role)
{
free(matches[i].window_role);
matches[i].window_role = NULL;
}
if(matches[i].wm_name)
{
free(matches[i].wm_name);
matches[i].wm_name = NULL;
}
if((matches[i].wm_command_count) && (matches[i].wm_command))
{
my_free_string_list(matches[i].wm_command, matches[i].wm_command_count);
g_free (matches[i].wm_command);
matches[i].wm_command_count = 0;
matches[i].wm_command = NULL;
}
}
if (matches)
{
matches = NULL;
num_match = 0;
}
}
/* This complicated logic is from twm, where it is explained */
#define xstreq(a,b) ((!a && !b) || (a && b && (strcmp(a,b)==0)))
static gboolean matchWin(Client * c, Match * m)
{
char *client_id = NULL;
char *window_role = NULL;
int wm_command_count = 0;
char **wm_command = NULL;
gboolean found;
int i;
g_return_val_if_fail (c != NULL, FALSE);
found = FALSE;
getClientID(dpy, c->window, &client_id);
if(xstreq(client_id, m->client_id))
{
/* client_id's match */
if (c->client_leader != None)
{
getWindowRole(dpy, c->client_leader, &window_role);
}
else
{
window_role = NULL;
}
if((window_role) || (m->window_role))
{
/* We have or had a window role, base decision on it */
found = xstreq(window_role, m->window_role);
}
else
{
/* Compare res_class, res_name and WM_NAME, unless the
* WM_NAME has changed
*/
if(xstreq(c->class.res_name, m->res_name) && (CLIENT_FLAG_TEST(c, CLIENT_FLAG_NAME_CHANGED) || (m->flags & CLIENT_FLAG_NAME_CHANGED) || xstreq(c->name, m->wm_name)))
{
{
/* If we have a client_id, we don't compare
WM_COMMAND, since it will be different. */
}
else
{
/* for non-SM-aware clients we also compare WM_COMMAND */
wm_command_count = 0;
getWindowCommand(dpy, c->window, &wm_command, &wm_command_count);
if(wm_command_count == m->wm_command_count)
if(strcmp(wm_command[i], m->wm_command[i]) != 0)
if((i == wm_command_count) && (wm_command_count))
{
found = TRUE;
}
} /* if (wm_command_count ==... */
/* We have to deal with a now-SM-aware client, it means that it won't probably
* restore its state in a proper manner.
* Thus, we also mark all other instances of this application as used, to avoid
* dummy side effects in case we found a matching entry.
*/
if(found)
{
for(i = 0; i < num_match; i++)
{
if(!(matches[i].used) && !(&matches[i] == m) && (m->client_leader) && (matches[i].client_leader == m->client_leader))
{
matches[i].used = TRUE;
}
}
}
}
}
}
}
if(client_id)
{
XFree(client_id);
client_id = NULL;
}
if(window_role)
{
XFree(window_role);
window_role = NULL;
}
if((wm_command_count > 0) && (wm_command))
{
XFreeStringList(wm_command);
wm_command = NULL;
wm_command_count = 0;
}
return found;
}
gboolean sessionMatchWinToSM(Client *c)
{
int i;
g_return_val_if_fail (c != NULL, FALSE);
for(i = 0; i < num_match; i++)
{
if(!matches[i].used && matchWin(c, &matches[i]))
{
matches[i].used = TRUE;
c->x = matches[i].x;
c->y = matches[i].y;
c->width = matches[i].width;
c->height = matches[i].height;
c->old_x = matches[i].old_x;
c->old_y = matches[i].old_y;
c->old_width = matches[i].old_width;
c->old_height = matches[i].old_height;
c->win_workspace = matches[i].desktop;
CLIENT_FLAG_SET(c, matches[i].flags & (CLIENT_FLAG_STICKY | CLIENT_FLAG_SHADED | CLIENT_FLAG_MAXIMIZED | CLIENT_FLAG_HIDDEN));
return TRUE;
}
}
return FALSE;
}