File: utils.c

package info (click to toggle)
parcellite 1.2.1-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm, bullseye
  • size: 1,576 kB
  • sloc: ansic: 4,944; sh: 1,574; makefile: 61; python: 37; xml: 29; sed: 16
file content (910 lines) | stat: -rw-r--r-- 25,421 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
/* Copyright (C) 2007-2008 by Xyhthyx <xyhthyx@gmail.com>
 *
 * This file is part of Parcellite.
 *
 * Parcellite 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 3 of the License, or
 * (at your option) any later version.
 *
 * Parcellite 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, see <http://www.gnu.org/licenses/>.
 */


#include "parcellite.h"
/**for our fifo interface  */
#include <sys/types.h>
#include <dirent.h> 
#include <sys/stat.h>
#include <pwd.h>
#include <fcntl.h>
#include <errno.h>
#include <libgen.h>
/**set this to debug looking up user environment vars to see other instances
of parcellite  */
/**#define DEBUG_MULTI  */
#ifdef DEBUG_MULTI
#  define DMTRACE(x) x
#else
#  define DMTRACE(x) do {} while (FALSE);
#endif

#ifndef PATH_MAX
#define PATH_MAX 4096
#endif

/** Wrapper to replace g_strdup to limit size of text copied from clipboard. 
g_strndup will dup to the size of the limit, which will waste resources, so
try to allocate using other methods.
*/
gchar *p_strdup( const gchar *str )
{
  gchar *n=NULL;
  size_t l,x;
  if(NULL == str)
    return NULL;
	x=get_pref_int32("item_size")*1000; 
	l=get_pref_int32("data_size")*1000; 
	if(l>0 && l<x) /**whichever is smaller, limit.  */
		x=l;
  if(0 == x)
    return g_strdup(str);
		/**use the following to test truncation  */
	  /*x=get_pref_int32("data_size")*10; */
  l=strlen(str);
    
/*  g_printf("Str '%s' x=%d l=%d u8=%d ",str,x,l,u8); */
  if(l>x){
    l=x;
  }
/*	g_printf("Tl=%d ",l); */
  
  if(NULL !=(n=g_malloc(l+8))){
    n[l+7]=0;
    g_strlcpy(n,str,l+1);
  }
/*  g_printf("str '%s'\n",n);  */
  return n;
}

/* Creates program related directories if needed */
void check_dirs( void )
{
  gchar* data_dir = g_build_path(G_DIR_SEPARATOR_S, g_get_user_data_dir(), DATA_DIR,  NULL);
  gchar* config_dir = g_build_path(G_DIR_SEPARATOR_S, g_get_user_config_dir(), CONFIG_DIR,  NULL);
	gchar *rc_file;
	
  /* Check if data directory exists */
  if (!g_file_test(data_dir, G_FILE_TEST_EXISTS))
  {
    /* Try to make data directory */
    if (g_mkdir_with_parents(data_dir, 0755) != 0)
      g_warning(_("Couldn't create directory: %s\n"), data_dir);
  }
  /* Check if config directory exists */
  if (!g_file_test(config_dir, G_FILE_TEST_EXISTS))
  {
    /* Try to make config directory */
    if (g_mkdir_with_parents(config_dir, 0755) != 0)
      g_warning(_("Couldn't create directory: %s\n"), config_dir);
  }
	/**now see if we need to setup any config files  */
	rc_file = g_build_filename(g_get_user_config_dir(), PREFERENCES_FILE, NULL);
	if(0 != access(rc_file,  R_OK)){/**doesn't exist */
		const gchar * const *sysconfig=g_get_system_config_dirs();	/**NULL-terminated list of strings  */
		const gchar * const *d;
		gchar *sysrc;
		for (d=sysconfig; NULL!= *d; ++d){
			sysrc=g_build_filename(*d, PREFERENCES_FILE, NULL);
			g_fprintf(stderr,"Looking in '%s'\n",sysrc);
			if(0 == access(sysrc,  F_OK)){/**exists */
				GError *e=NULL;
				GFile *src=g_file_new_for_path(sysrc);
				GFile *dst=g_file_new_for_path(rc_file);
				g_fprintf(stderr,"Using parcelliterc from '%s', place in '%s'\n",sysrc,rc_file);
				if(FALSE ==g_file_copy(src,dst,G_FILE_COPY_NONE,NULL,NULL,NULL,&e)){
					g_fprintf(stderr,"Failed to copy. %s\n",e->message);
				}
				g_free(sysrc);
				goto done;
			}	
			g_free(sysrc);
		}
	}	
done:
	/* Cleanup */
	g_free(rc_file);
	g_free(data_dir);
  g_free(config_dir);
}

/* Returns TRUE if text is a hyperlink */
gboolean is_hyperlink(gchar* text)
{
  /* TODO: I need a better regex, this one is poor */
  GRegex* regex = g_regex_new("([A-Za-z][A-Za-z0-9+.-]{1,120}:[A-Za-z0-9/]" \
                              "(([A-Za-z0-9$_.+!*,;/?:@&~=-])|%[A-Fa-f0-9]{2}){1,333}" \
                              "(#([a-zA-Z0-9][a-zA-Z0-9$_.+!*,;/?:@&~=%-]{0,1000}))?)",
                              G_REGEX_CASELESS, 0, NULL);
  
  gboolean result = g_regex_match(regex, text, 0, NULL);
  g_regex_unref(regex);
  return result;
}



/* Parses the program arguments. Returns TRUE if program needs
 * to exit after parsing is complete
 */
struct cmdline_opts *parse_options(int argc, char* argv[])
{
	struct cmdline_opts *opts=g_malloc0(sizeof(struct cmdline_opts));
	if(NULL == opts){
		g_fprintf(stderr,"Unable to malloc cmdline_opts\n");
		return NULL;
	}
  if (argc <= 1) 
		return opts;	
  GOptionEntry main_entries[] = 
  {
    {
      "no-icon", 'n',
      0,
      G_OPTION_ARG_NONE,
      &opts->icon, _("Do not use status icon (Ctrl-Alt-P for menu)"),
      NULL
    },
    {
      "clipboard", 'c',
      0,
      G_OPTION_ARG_NONE,
      &opts->clipboard, _("Print clipboard contents"),
      NULL
    },
    {
      "primary", 'p',
      0,
      G_OPTION_ARG_NONE,
      &opts->primary, _("Print primary contents"),
      NULL
    },
    {
		  "version", 'v',0, G_OPTION_ARG_NONE,&opts->version,_("Display Version info"),NULL
		},
		{
      NULL
    }
  };
  
  /* Option parsing */
  GOptionContext* context = g_option_context_new(NULL);
  /* Set summary */
  g_option_context_set_summary(context,
                             _("Clipboard CLI usage examples:\n\n  echo \"copied to clipboard\" | parcellite\n  parcellite \"copied to clipboard\"\n  echo \"copied to clipboard\" | parcellite -c"));
  /* Set description */
  g_option_context_set_description(context,
                                 _("Written by Gilberto \"Xyhthyx\" Miralla and Doug Springer.\nReport bugs to <gpib@rickyrockrat.net>."));
  /* Add entries and parse options */
  g_option_context_add_main_entries(context, main_entries, NULL);
  g_option_context_parse(context, &argc, &argv, NULL);
  g_option_context_free(context);
	opts->leftovers = g_strjoinv(" ", argv + 1);
  /* Check which options were parseed */
  
  /* Do not display icon option */
  if (opts->icon)  {
		set_pref_int32("no_icon",TRUE);
  } else
  	set_pref_int32("no_icon",FALSE);
	if(opts->version){
		gchar *v;
		#ifdef HAVE_CONFIG_H	/**VER=555; sed "s#\(.*\)svn.*\".*#\1svn$VER\"#" config.h  */
    	v=VERSION;
		#else
			v="Unknown";
    #endif
		g_fprintf(stderr,"Parcellite %s, GTK %d.%d.%d\n",v, gtk_major_version, gtk_minor_version,gtk_micro_version );
		opts->exit=1;
	}
	return opts;                                                              
}

/***************************************************************************/
/** Given a PID, look at owner of proc to determine UID.
\n\b Arguments:
\n\b Returns:	-1 on error or UID if found
****************************************************************************/
int pid_to_uid (pid_t pid )
{
	struct stat st;
	char path[255];
	snprintf(path, 254, "/proc/%ld", (long)pid);
	if(0 != stat(path,&st) ){
		g_fprintf(stderr,"Can't stat '%s'\n",path);
		perror("");
		return -1;
	}
	/*g_fprintf(stderr,"%ld pid is %ld uid\n",pid,st.st_uid); */
	return (int)st.st_uid;
}

/***************************************************************************/
/** Get the current user name by examining the XDG directory.
\n\b Arguments:
\n\b Returns: username, if found. Use  g_free.
****************************************************************************/
gchar * get_username_xdg( void )
{
	gchar* username;
	username = (gchar *)g_getenv ("HOME");
  if (!username)
    username = (gchar *)g_get_home_dir ();
	/*g_printf("get_username: '%s'\n",username); */
	if(NULL != username ){
		gchar *t;
		t=g_strdup (username);
		username=g_strdup(basename(t));		
		g_free(t);
		return username;
	}
	return NULL;
}

/***************************************************************************/
/** Get uid from pid_to_uid, then get the username from userid
pid_to_uid.struct passwd *getpwuid(uid_t uid); ->  char   *pw_name;
\n\b Arguments: pid of process to lookup
\n\b Returns:
****************************************************************************/
gchar *get_username_pid( pid_t pid )
{
	int uid;
	struct passwd *p;
	if(-1 ==(uid=pid_to_uid(pid)) )
		return NULL;
	if(NULL == (p=getpwuid((uid_t) uid)) ){
		perror("Unable to get username from passwd\n");
		return NULL;
	}
	/*g_printf("%ld uid='%s'\n",pid,p->pw_name); */
	return g_strdup(p->pw_name);
}
/***************************************************************************/
/** Gets a value give the key name from the pid envronment with null-terminated
strings.
\n\b Arguments:
\n\b Returns: 
-1 on error
0 if not found
1 if found
value is filled with value or NULL.
value or NULL. Free value with g_free.
****************************************************************************/
int get_value_from_env(pid_t pid, gchar *key, char **value)
{
	GFile *fp;
	char *env=NULL, *envf;
	gsize elen, i;
	int rtn=-1;
	if(NULL == value){
		g_fprintf(stderr,"get_value_from_env: value null!\n");
		return rtn;
	}
	*value=NULL;
	if(NULL == (envf=(g_malloc(strlen("/proc/9999999/environ"))))) {
		g_fprintf(stderr,"Unable to allocate for environ file name.\n");
		return rtn;
	}
	g_sprintf(envf,"/proc/%ld/environ",(long int)pid);
	if(0 != access(envf,  R_OK)){/**doesn't exist, or not our process  */
		g_fprintf(stderr,"Unable to open '%s' for PID %ld\n",envf,(long int)pid);
		goto error;
	}
	fp=g_file_new_for_path(envf);
	/**this dumps a zero at end of file.  */
	if(FALSE == g_file_load_contents(fp,NULL,&env,&elen,NULL,NULL)	){
		g_fprintf(stderr,"Error finding '%s' for PID %ld\n",envf,(long int)pid);
		goto error;
	}
	if(NULL == env){
		 g_fprintf(stderr,"NULL evironment\n");
		 goto error; 
	}
	/*g_printf("Loaded file '%s', looking for KEY '%s'\n",envf,key); */
	++elen; /**allow for zero @ end of file.  */
	for (i=0; i<elen; ++i){
		gchar *f;
		f=g_strrstr(&env[i],key);
		
		if(NULL != f){
			if(i==0 || f[-1] == 0){/**beginning terminators  */
				i+=f-&env[i]; /**beginning of string  */
				while(i<elen && 0!=env[i] && '=' !=env[i]) ++i;
				if('=' == env[i] ){/**found, return key  */
					*value=g_strdup(&env[i+1]);
					/*g_printf("%s=%s\n",key,value); */
					rtn=1;
					goto error;
				} /**if we get out of this loop, we are either @ 0 or end of environment.  */
			}else
				i+=strlen(f);
		} else { /**go to end of string, & loop increment will go past 0  */
			while(i<elen && 0!= env[i]) ++i;
		}
	}
	rtn=0;/**not found  */
	
error:
	if(NULL != envf)
		g_free (envf);
	if(NULL != env)																										 
		g_free(env);
	return rtn;
}

/** Stat of the pid in /proc/pid give uid.  Environment is only readable by
   owner */
/***************************************************************************/
/** Assume if there is an error, it is a different user/session.
XDG_SESSION_COOKIE and DBUS_SESSION_BUS_ADDRESS are possible candidates for
UUIDs.
\n\b Arguments:
\n\b Returns: 1 if user matches what is found in the pid environ, or error
Returns 0 if it all works and the user is found in the pid environ.
****************************************************************************/
int is_current_user (pid_t pid, int mode)
{ 
	int rtn=1;
	gchar *username=NULL;
	gchar *user=NULL;
	if(PROC_MODE_USER_QUALIFY & mode ){
		username=get_username_pid(getpid());
		if(NULL == username){
			g_fprintf(stderr,"get_username fail\n");
			goto done;
		}
		user=get_username_pid(pid);	
		/*user=get_value_from_env(pid,"USERNAME"); */
		/*g_printf("user='%s'\n",user); */
		if(NULL == user){
			goto done;
		}
		/*g_printf("We are '%s', Found '%s' for USERNAME in pid %ld\n",username,user,pid); */
		if(! g_strcmp0(username,user)){
			/*g_printf("Match\n"); */
			goto done;
		}
		rtn=0;
	}	/*else g_printf("UQ not set\n"); */
done:
	if(NULL != user)
		g_free(user);
	if(NULL != username)
		g_free(username); 
	return rtn;
}

/***************************************************************************/
/** .
\n\b Arguments: Pid to check session type.
\n\b Returns: 
-1 if error
0 if not found
1 if it is found (i.e. in current session)
2 if it is found, and not in current session
****************************************************************************/
int is_current_xsession_var (pid_t pid, gchar *env_var)
{
	int rtn=-1;
	gchar *mine, *theirs;
	mine=theirs=NULL;
	if(NULL == env_var){
		g_fprintf(stderr,"env_var for pid %ld is NULL!\n",(long)pid);
		return -1;
	}
	if(-1 == get_value_from_env(pid, env_var,&theirs) ){
		g_fprintf(stderr,"Unable to access '%s' for pid %ld\n",env_var,(long)pid);
		return -1;
	}
	if( -1 == get_value_from_env(getpid(),env_var,&mine)){
		g_fprintf(stderr,"Unable to access my '%s'\n",env_var);
		goto done;
	}
	rtn=0;
	if(NULL == theirs)	DMTRACE(g_fprintf(stderr,"Their Null "));
	if(NULL == mine )   DMTRACE(g_fprintf(stderr,"Mine Null "));
	if(NULL != theirs && NULL != mine){
		DMTRACE(g_fprintf(stderr,"Both found "));
		if(! g_strcmp0(mine,theirs))
			rtn=1;	
		else
			rtn=2;
	}
	
	/*g_fprintf(stderr,"my='%s', pid %ld='%s',match=%d\n",mine,(long)pid,theirs,rtn);  */
done:
	if(NULL != mine)
		g_free(mine);
	if(NULL != theirs)
		g_free(theirs);
	return rtn;
}

/***************************************************************************/
/** Use several methods to figure out the session we are in.
1) Check XDG_SESSION_COOKIE
2) Check DISPLAY var
3) ??
\n\b Arguments:
\n\b Returns:
1 if in current session
0 if not in current session
 #-1 if error
****************************************************************************/
int is_current_xsession (pid_t pid)
{
	int i,x;
	gchar *names[]={"XDG_SESSION_COOKIE","XDG_SEAT","DISPLAY",NULL};
		
	for (i=0;NULL != names[i]; ++i){
		DMTRACE(g_fprintf(stderr,"@%s ",names[i]));
		if((x=is_current_xsession_var(pid,names[i]))>0){
			if( 1 == x){
				DMTRACE(g_fprintf(stderr," Found \n"));
				return 1;
			}	else {
				DMTRACE(g_fprintf(stderr," Not Found \n"));
				return 0;
			}
				
		}	
	}
	/**default to not in current session  */
	return 0;
}
/***************************************************************************/
/** Return a PID given a name. Used to check a if a process is running..
if 2 or greater, process is running
TODO: Figure out if we are in the same X instance....Possibly this?
Get our DISPLAY var
Display *XOpenDisplay(NULL); --default to DISPLAY env var....
char *XDisplayString(Display *display);	
Then grab the Display var from ENV, or just use ENV?? Ugh.

\n\b Arguments: 
name is name of program to find
mode sets the mode of the find (exact or partial)
pid is a place to put the last found pid

\n\b Returns:	number of instances of name found
Note: /proc/pid/environ contains interesting variables:
HOME
USERNAME
LOGNAME
with this format:
0x00KEY=VAL0x00
****************************************************************************/
int proc_find(const char* name, int mode, pid_t *pid) 
{
	DIR* dir;
	FILE* fp;
	struct dirent* ent;
  char* endptr;
  char buf[PATH_MAX];
	int instances=0;
 
  if (!(dir = opendir("/proc"))) {
  	perror("can't open /proc");
    return -1;
  }

  while((ent = readdir(dir)) != NULL) {
    /* if endptr is not a null character, the directory is not
     * entirely numeric, so ignore it */
    long lpid = strtol(ent->d_name, &endptr, 10);
    if (*endptr != '\0') {
        continue;
    }
    /* try to open the cmdline file */
    snprintf(buf, sizeof(buf), "/proc/%ld/cmdline", lpid);

    if ((fp= fopen(buf, "r"))) {
      if (fgets(buf, sizeof(buf), fp) != NULL) {
				if(PROC_MODE_EXACT & mode){
					gchar *b=g_path_get_basename(buf);
		      if (!g_strcmp0(b, name)) {
						if(is_current_user(lpid,mode) && 1 == is_current_xsession(lpid) )
							++instances;
						if(NULL !=pid)
						  *pid=lpid;
		      }
				}else if( PROC_MODE_STRSTR & mode){
					if(NULL !=g_strrstr(buf,name)){
						if(is_current_user(lpid,mode) && 1 == is_current_xsession(lpid))
							++instances;
						if(NULL !=pid)
						  *pid=lpid;
						/*g_printf("Looking for '%s', found '%s'\n",name,buf); */
					}
				}
				
      }
      fclose(fp);
    }

  }

  closedir(dir);
  return instances;
}

/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
gboolean fifo_read_cb (GIOChannel *src,  GIOCondition cond, gpointer data)
{
	struct p_fifo *f=(struct p_fifo *)data;
	int which;
	if(src == f->g_ch_p)
		which=FIFO_MODE_PRI;
	else if(src == f->g_ch_c)
		which=FIFO_MODE_CLI;
	else if( src == f->g_ch_cmd)
		which=FIFO_MODE_CMD;
	else{
		g_fprintf(stderr,"Unable to determine fifo!!\n");
		return 0;
	}
	if(cond & G_IO_HUP){
	  if(f->dbg) g_fprintf(stderr,"gothup ");
		return FALSE;
	}
	if(cond & G_IO_NVAL){
	  if(f->dbg) g_fprintf(stderr,"readnd ");
		return FALSE;
	}
	if(cond & G_IO_IN){
	  if(f->dbg) g_fprintf(stderr,"norm ");
	}
	
  if(f->dbg) g_fprintf(stderr,"0x%X Waiting on chars\n",cond);
	f->rlen=0;
/** (	while (1) {*/
		int s;
		
		s=read_fifo(f,which);
/**  		usleep(100);
		if(-1 == s){
			g_printf("Error reading fifo\n");
			return 0;
		} else if(0 == s)
			break;
	}    
	if(f->rlen>0){
		g_printf("Setting fifo which\n");
		f->which=FIFO_MODE_PRI==which?ID_PRIMARY:ID_CLIPBOARD;
	}    */
		
	return TRUE;
}

/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
gint _create_fifo(gchar *f)
{
	int i=0;
	if(0 == access(f,F_OK)	)
		unlink(f);
	if(-1 ==mkfifo(f,0660)){
		perror("mkfifo ");
		i= -1;
	}
	g_free(f);
	return i;
}
/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
int create_fifo(void)
{
	gchar *f;
	int i=0;
	check_dirs();
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_C, NULL);
	if(-1 ==  _create_fifo(f) )
		--i;
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_P, NULL);
	if(-1 ==  _create_fifo(f) )
		--i;
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_CMD, NULL);
	if(-1 ==  _create_fifo(f) )
		--i;
	return i;
}


/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
int _open_fifo(char *path, int flg)
{
	int fd;
	mode_t mode=0660;
	fd=open(path,flg,mode);												 
	if(fd<3){
		fprintf(stderr,"Unable to open fifo '%s' ",path);
		perror("");
	}
	g_free(path);
	return fd;
}
/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
int open_fifos(struct p_fifo *fifo)
{
	int flg;
	gchar *f;
	
	if(PROG_MODE_CLIENT & fifo->whoami)
		flg=O_WRONLY|O_NONBLOCK;
	else {/**daemon  if you set O_RDONLY, you get 100%cpu usage from HUP*/
		flg=O_RDWR|O_NONBLOCK;/*|O_EXCL; */
	}	
	
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_P, NULL);
	if( (fifo->fifo_p=_open_fifo(f,flg))>2 && (PROG_MODE_DAEMON & fifo->whoami)){
		if(fifo->dbg) g_fprintf(stderr,"PRI fifo %d\n",fifo->fifo_p);
		fifo->g_ch_p=g_io_channel_unix_new (fifo->fifo_p);
		g_io_add_watch (fifo->g_ch_p,G_IO_IN|G_IO_HUP,fifo_read_cb,(gpointer)fifo);
	}
		
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_C, NULL);
	if( (fifo->fifo_c=_open_fifo(f,flg)) >2 && (PROG_MODE_DAEMON & fifo->whoami)){
		fifo->g_ch_c=g_io_channel_unix_new (fifo->fifo_c);
		g_io_add_watch (fifo->g_ch_c,G_IO_IN|G_IO_HUP,fifo_read_cb,(gpointer)fifo);
	}
	f=g_build_filename(g_get_user_data_dir(), FIFO_FILE_CMD, NULL);
	if( (fifo->fifo_cmd=_open_fifo(f,flg))>2 && (PROG_MODE_DAEMON & fifo->whoami)){
		if(fifo->dbg) g_fprintf(stderr,"CMD fifo %d\n",fifo->fifo_cmd);
		fifo->g_ch_cmd=g_io_channel_unix_new (fifo->fifo_cmd);
		g_io_add_watch (fifo->g_ch_cmd,G_IO_IN|G_IO_HUP,fifo_read_cb,(gpointer)fifo);
	}
	if(fifo->dbg) g_fprintf(stderr,"CLI fifo %d PRI fifo %d\n",fifo->fifo_c,fifo->fifo_p);
	if(fifo->fifo_c <3 || fifo->fifo_p <3)
		return -1;
	return 0;
}


/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
int read_fifo(struct p_fifo *f, int which)
{
	int i,t, fd, len, *rlen;
	char *buf;
	i=t=0;
	
	switch(which){
		case FIFO_MODE_PRI:
			fd=f->fifo_p;
			f->which=ID_PRIMARY;
			buf=f->buf;
			len=f->len;
			rlen=&f->rlen;
			break;
		case FIFO_MODE_CLI:
			fd=f->fifo_c;
			f->which=ID_CLIPBOARD;
			buf=f->buf;
			len=f->len;
			rlen=&f->rlen;
			break;
		case FIFO_MODE_CMD:
			fd=f->fifo_cmd;
			f->which=ID_CMD;
			buf=f->cbuf;
			len=f->tclen;
			rlen=&f->clen;
			break;
		default:
			g_fprintf(stderr,"Unknown fifo %d!\n",which);
			return -1;
	}
	if(NULL ==f || fd <3 ||NULL == buf|| len <=0)
		return -1;
	while(1){
		i=read(fd,buf,len-t);
		if(i>0)
			t+=i;
		else 
			break;
	}
	if( -1 == i){
		if( EAGAIN != errno){
			perror("read_fifo");
			return -1;
		}
	}
	buf[t]=0;
	*rlen=t;
	if(t>0)
	  if(f->dbg) g_fprintf(stderr,"%s: Got %d '%s'\n",f->fifo_p==fd?"PRI":"CLI",t,buf);
	return t;
}
/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
int write_fifo(struct p_fifo *f, int which, char *buf, int len)
{
	int x,i, l,fd;
	x=i=l=0;
	switch(which){
		case FIFO_MODE_PRI:
			if(f->dbg) g_fprintf(stderr,"Using pri fifo for write\n");
			fd=f->fifo_p;
			break;
		case FIFO_MODE_CLI:
			if(f->dbg) g_fprintf(stderr,"Using cli fifo for write\n");
			fd=f->fifo_c;
			break;
		default:
			g_fprintf(stderr,"Unknown fifo %d!\n",which);
			return -1;
	}
	if(NULL ==f || fd <3 || NULL ==buf)
		return -1;
	if(f->dbg) g_fprintf(stderr,"writing '%s'\n",buf);
	while(len-i>0){	
		x=write(fd,&buf[i],len-i);
		if(x>0)
			i+=x;
		++l;
		if(l>0x7FFE){
			g_fprintf(stderr,"Maxloop hit\n");
			break;
		}
			
	}
	if( -1 == x){
		if( EAGAIN != errno){
			perror("write_fifo");
			return -1;
		}
	}
	return 0;
}


/***************************************************************************/
/** Figure out who we are, then open the fifo accordingly.
return the fifo file descriptor, or -1 on error
GIOChannel*         g_io_channel_unix_new               (int fd);

guint               g_io_add_watch                      (GIOChannel *channel,
                                                         G_IO_IN    GIOFunc func,
                                                         gpointer user_data);
                                                         
g_io_channel_shutdown(channel,TRUE,NULL);
\n\b Arguments:
\n\b Returns:	allocated struct or NULL on fail
****************************************************************************/
struct p_fifo *init_fifo(int mode)
{
	struct p_fifo *f=g_malloc0(sizeof(struct p_fifo));
	if(NULL == f){
		g_fprintf(stderr,"Unable to allocate for fifo!!\n");
		return NULL;
	}
	if(NULL == (f->buf=(gchar *)g_malloc0(8000)) ){
		g_fprintf(stderr,"Unable to alloc 8k buffer for fifo! Command Line Input will be ignored.\n");
		g_free(f);
		return NULL;
	}
	f->len=7999;
	if(NULL == (f->cbuf=(gchar *)g_malloc0(8000)) ){
		g_fprintf(stderr,"Unable to alloc 8k buffer for fifo! Command Line Input will be ignored.\n");
		g_free(f);
		return NULL;
	}
	f->tclen=7999;
	/**set debug here for debug messages */
	f->dbg=0;  
	
/*	f->dbg=1;  */
/*	g_printf("My PID is %d\n",getpid()); */
	/**we are daemon, and will launch  */
	if(mode&PROG_MODE_DAEMON){
		f->whoami=PROG_MODE_DAEMON;
		if(f->dbg) g_fprintf(stderr,"running parcellite not found\n");
		if(create_fifo() < 0 ){
			g_fprintf(stderr,"error creating fifo\n");
		  goto err;
		}	
		if(open_fifos(f) < 0 ){
			g_fprintf(stderr,"Error opening fifo. Exit\n");
			goto err;
		}	
		return f;
		  /**We are the client  */
	}	else{
		f->whoami=PROG_MODE_CLIENT;
		if(f->dbg) g_fprintf(stderr,"parcellite found\n");
		if(open_fifos(f) < 0 ){
			g_fprintf(stderr,"Error opening fifo. Exit\n");
			goto err;
		}
		return f;
	}
	
err:
	close_fifos(f);
	return NULL;
	
}

/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
void close_fifos(struct p_fifo *f)
{
	if(NULL ==f)
		return;
	
	if(NULL != f->g_ch_p)
		g_io_channel_shutdown(f->g_ch_p,TRUE,NULL);
	if(f->fifo_p>0)
		close(f->fifo_p);
	
	if(NULL != f->g_ch_c)
		g_io_channel_shutdown(f->g_ch_c,TRUE,NULL);
	if(f->fifo_c>0)
		close(f->fifo_c);
	g_free(f);
}


/***************************************************************************/
/** .
\n\b Arguments:
\n\b Returns:
****************************************************************************/
void show_gtk_dialog(gchar *message, gchar *title)
{
GtkWidget *dialog;
	if(NULL == message || NULL == title)
		return;
	dialog= gtk_message_dialog_new(NULL,GTK_DIALOG_DESTROY_WITH_PARENT,
	            GTK_MESSAGE_WARNING,  GTK_BUTTONS_OK,
	            message,NULL);
	gtk_window_set_title(GTK_WINDOW(dialog), title ); 
	gtk_widget_show_all(dialog);
	gtk_dialog_run(GTK_DIALOG(dialog));
	gtk_widget_destroy(dialog);	
}