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/* $Id: copy.c,v 1.2 2007/08/03 01:16:47 khorben Exp $ */
/* Copyright (c) 2007 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Browser */
/* Browser is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* Browser 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
* Browser; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <libgen.h>
#include <errno.h>
#include <gtk/gtk.h>
/* types */
typedef int Prefs;
#define PREFS_f 0x01
#define PREFS_i 0x02
#define PREFS_p 0x04
#define PREFS_R 0x08
#define PREFS_H 0x10
#define PREFS_L 0x20
#define PREFS_P 0x40
/* Copy */
/* types */
typedef struct _Copy
{
Prefs * prefs;
unsigned int filec;
char ** filev;
unsigned int cur;
GtkWidget * window;
GtkWidget * label;
GtkWidget * progress;
} Copy;
/* functions */
static void _copy_refresh(Copy * copy);
/* callbacks */
static void _copy_on_closex(GtkWidget * widget, GdkEvent * event,
gpointer data);
static gboolean _copy_idle_first(gpointer data);
static int _copy(Prefs * prefs, int filec, char * filev[])
{
static Copy copy;
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * widget;
copy.prefs = prefs;
copy.filec = filec;
copy.filev = filev;
copy.cur = 0;
copy.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(copy.window), "Copy file(s)");
g_signal_connect(G_OBJECT(copy.window), "delete_event", G_CALLBACK(
_copy_on_closex), NULL);
vbox = gtk_vbox_new(FALSE, 4);
copy.label = gtk_label_new("");
gtk_box_pack_start(GTK_BOX(vbox), copy.label, TRUE, TRUE, 4);
copy.progress = gtk_progress_bar_new();
gtk_box_pack_start(GTK_BOX(vbox), copy.progress, TRUE, TRUE, 4);
hbox = gtk_hbox_new(FALSE, 4);
widget = gtk_button_new_from_stock(GTK_STOCK_CANCEL);
gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, FALSE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 4);
gtk_container_set_border_width(GTK_CONTAINER(copy.window), 4);
gtk_container_add(GTK_CONTAINER(copy.window), vbox);
g_idle_add(_copy_idle_first, &copy);
_copy_refresh(&copy);
gtk_widget_show_all(copy.window);
return 0;
}
static void _copy_refresh(Copy * copy)
{
char buf[256];
double fraction;
snprintf(buf, sizeof(buf), "Copying file: %s", copy->filev[copy->cur]);
gtk_label_set_text(GTK_LABEL(copy->label), buf);
snprintf(buf, sizeof(buf), "File %u of %u", copy->cur, copy->filec);
fraction = (double)(copy->cur) / (double)copy->filec;
gtk_progress_bar_set_text(GTK_PROGRESS_BAR(copy->progress), buf);
gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(copy->progress),
fraction);
}
static int _copy_error(Copy * copy, char const * message, int ret)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(copy->window),
GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR,
GTK_BUTTONS_OK, "%s: %s", message, strerror(errno));
gtk_window_set_title(GTK_WINDOW(dialog), "Error");
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return ret;
}
static void _copy_info(Copy * copy, char const * message, char const * info)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(copy->window),
GTK_DIALOG_MODAL, GTK_MESSAGE_INFO,
GTK_BUTTONS_OK, "%s: %s", message, info);
gtk_window_set_title(GTK_WINDOW(dialog), "Information");
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
}
static int _copy_confirm(Copy * copy, char const * dst)
{
int ret;
GtkWidget * dialog;
dialog = gtk_message_dialog_new(GTK_WINDOW(copy->window),
GTK_DIALOG_MODAL, GTK_MESSAGE_QUESTION,
GTK_BUTTONS_YES_NO, "%s will be overwritten\n"
"Proceed?", dst);
gtk_window_set_title(GTK_WINDOW(dialog), "Question");
ret = gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return ret == GTK_RESPONSE_YES ? 1 : 0;
}
static void _copy_on_closex(GtkWidget * widget, GdkEvent * event,
gpointer data)
{
gtk_main_quit();
}
static int _copy_single(Copy * copy, char const * src, char const * dst);
static gboolean _copy_idle_multiple(gpointer data);
static gboolean _copy_idle_first(gpointer data)
{
Copy * copy = data;
struct stat st;
if(stat(copy->filev[copy->filec - 1], &st) != 0)
{
if(errno != ENOENT)
_copy_error(copy, copy->filev[copy->filec - 1], 0);
else if(copy->filec > 2)
{
errno = ENOTDIR;
_copy_error(copy, copy->filev[copy->filec - 1], 0);
}
else
_copy_single(copy, copy->filev[0], copy->filev[1]);
}
else if(S_ISDIR(st.st_mode))
{
g_idle_add(_copy_idle_multiple, copy);
return FALSE;
}
else if(copy->filec > 2)
{
errno = ENOTDIR;
_copy_error(copy, copy->filev[copy->filec - 1], 0);
}
else
_copy_single(copy, copy->filev[0], copy->filev[1]);
gtk_main_quit();
return FALSE;
}
/* copy_single
* XXX TOCTOU all over the place (*stat) but seem impossible to avoid */
static int _single_dir(Copy * copy, char const * src, char const * dst);
static int _single_fifo(Copy * copy, char const * dst);
static int _single_symlink(Copy * copy, char const * src, char const * dst);
static int _single_regular(Copy * copy, char const * src, char const * dst);
static int _single_p(Copy * copy, char const * dst, struct stat const * st);
static int _copy_single(Copy * copy, char const * src, char const * dst)
{
int ret;
struct stat st;
struct stat st2;
if(*(copy->prefs) & PREFS_P) /* don't follow symlinks */
{
if(lstat(src, &st) != 0 && errno == ENOENT)
return _copy_error(copy, src, 1);
}
else if(stat(src, &st) != 0 && errno == ENOENT) /* follow symlinks */
return _copy_error(copy, src, 1);
if(lstat(dst, &st2) == 0)
{
if(*(copy->prefs) & PREFS_i && _copy_confirm(copy, dst) != 1)
return 0;
if(unlink(dst) != 0)
return _copy_error(copy, dst, 1);
}
if(S_ISDIR(st.st_mode))
ret = _single_dir(copy, src, dst);
else if(S_ISFIFO(st.st_mode))
ret = _single_fifo(copy, dst);
else if(S_ISLNK(st.st_mode))
ret = _single_symlink(copy, src, dst);
else
ret = _single_regular(copy, src, dst);
if(ret != 0)
return ret;
if(*(copy->prefs) & PREFS_p) /* XXX TOCTOU */
_single_p(copy, dst, &st);
return 0;
}
/* single_dir */
static int _single_recurse(Copy * copy, char const * src, char const * dst);
static int _single_dir(Copy * copy, char const * src, char const * dst)
{
if(*(copy->prefs) & PREFS_R)
return _single_recurse(copy, src, dst);
_copy_info(copy, src, "Omitting directory");
return 0;
}
static int _single_recurse(Copy * copy, char const * src, char const * dst)
{
int ret = 0;
Copy copy2;
Prefs prefs2 = *(copy->prefs);
size_t srclen;
size_t dstlen;
DIR * dir;
struct dirent * de;
char * ssrc = NULL;
char * sdst = NULL;
char * p;
memcpy(&copy2, copy, sizeof(copy2));
copy2.prefs = &prefs2;
if(mkdir(dst, 0777) != 0 && errno != EEXIST)
return _copy_error(copy, dst, 1);
srclen = strlen(src);
dstlen = strlen(dst);
if((dir = opendir(src)) == NULL)
return _copy_error(copy, src, 1);
prefs2 |= (prefs2 & PREFS_H) ? PREFS_P : 0;
while((de = readdir(dir)) != NULL)
{
if(de->d_name[0] == '.' && (de->d_name[1] == '\0'
|| (de->d_name[1] == '.'
&& de->d_name[2] == '\0')))
continue;
if((p = realloc(ssrc, srclen + strlen(de->d_name) + 2)) == NULL)
{
ret |= _copy_error(copy, src, 1);
continue;
}
ssrc = p;
sprintf(ssrc, "%s/%s", src, de->d_name);
if((p = realloc(sdst, dstlen + strlen(de->d_name) + 2)) == NULL)
{
ret |= _copy_error(copy, ssrc, 1);
continue;
}
sdst = p;
sprintf(sdst, "%s/%s", dst, de->d_name);
ret |= _copy_single(&copy2, ssrc, sdst);
}
closedir(dir);
free(ssrc);
free(sdst);
return ret;
}
static int _single_fifo(Copy * copy, char const * dst)
{
if(mkfifo(dst, 0666) != 0)
return _copy_error(copy, dst, 1);
return 0;
}
static int _single_symlink(Copy * copy, char const * src, char const * dst)
{
char buf[PATH_MAX];
ssize_t len;
if((len = readlink(src, buf, sizeof(buf) - 1)) == -1)
return _copy_error(copy, src, 1);
buf[len] = '\0';
if(symlink(buf, dst) != 0)
return _copy_error(copy, dst, 1);
return 0;
}
static int _single_regular(Copy * copy, char const * src, char const * dst)
{
int ret = 0;
FILE * fsrc;
FILE * fdst;
char buf[BUFSIZ];
size_t size;
if((fsrc = fopen(src, "r")) == NULL)
return _copy_error(copy, src, 1);
if((fdst = fopen(dst, "w")) == NULL)
{
ret = _copy_error(copy, dst, 1);
fclose(fsrc);
return ret;
}
while((size = fread(buf, sizeof(char), sizeof(buf), fsrc)) > 0)
if(fwrite(buf, sizeof(char), size, fdst) != size)
break;
if(!feof(fsrc))
ret |= _copy_error(copy, size == 0 ? src : dst, 1);
if(fclose(fsrc) != 0)
ret |= _copy_error(copy, src, 1);
if(fclose(fdst) != 0)
ret |= _copy_error(copy, dst, 1);
return ret;
}
static int _single_p(Copy * copy, char const * dst, struct stat const * st)
{
struct timeval tv[2];
if(chown(dst, st->st_uid, st->st_gid) != 0)
{
_copy_error(copy, dst, 0);
if(chmod(dst, st->st_mode & ~(S_ISUID | S_ISGID)) != 0)
_copy_error(copy, dst, 0);
}
else if(chmod(dst, st->st_mode) != 0)
_copy_error(copy, dst, 0);
tv[0].tv_sec = st->st_atime;
tv[0].tv_usec = 0;
tv[1].tv_sec = st->st_mtime;
tv[1].tv_usec = 0;
if(utimes(dst, tv) != 0)
_copy_error(copy, dst, 0);
return 0;
}
static int _copy_multiple(Copy * copy, char const * src, char const * dst);
static gboolean _copy_idle_multiple(gpointer data)
{
Copy * copy = data;
_copy_multiple(copy, copy->filev[copy->cur],
copy->filev[copy->filec - 1]);
copy->cur++;
if(copy->cur == copy->filec - 1)
{
gtk_main_quit();
return FALSE;
}
_copy_refresh(copy);
return TRUE;
}
static int _copy_multiple(Copy * copy, char const * src, char const * dst)
{
int ret;
char * to;
size_t len;
char * p;
to = basename(src); /* XXX src is const */
len = strlen(src + strlen(to) + 2);
if((p = malloc(len * sizeof(char))) == NULL)
return _copy_error(copy, src, 1);
sprintf(p, "%s/%s", dst, to);
ret = _copy_single(copy, src, p);
free(p);
return ret;
}
/* usage */
static int _usage(void)
{
fputs("Usage: copy [-fip] source_file target_file\n\
cp [-fip] source_file ... target\n\
cp -R [-H | -L | -P][-fip] source_file ... target\n\
cp -r [-H | -L | -P][-fip] source_file ... target\n\
-f Do not prompt for confirmation if the destination path exists\n\
-i Prompt for confirmation if the destination path exists\n\
-p Duplicate characteristics of the source files\n\
-R Copy file hierarchies\n\
-r Copy file hierarchies\n", stderr);
return 1;
}
/* main */
int main(int argc, char * argv[])
{
Prefs prefs;
int o;
memset(&prefs, 0, sizeof(prefs));
prefs |= PREFS_i | PREFS_H;
gtk_init(&argc, &argv);
while((o = getopt(argc, argv, "fipRrHLP")) != -1)
switch(o)
{
case 'f':
prefs -= prefs & PREFS_i;
prefs |= PREFS_f;
break;
case 'i':
prefs -= prefs & PREFS_f;
prefs |= PREFS_i;
break;
case 'p':
prefs -= prefs & PREFS_p;
prefs |= PREFS_i;
break;
case 'R':
case 'r':
prefs |= PREFS_R;
break;
case 'H':
prefs -= prefs & (PREFS_L | PREFS_P);
prefs |= PREFS_H;
break;
case 'L':
prefs -= prefs & (PREFS_H | PREFS_P);
prefs |= PREFS_L;
break;
case 'P':
prefs -= prefs & (PREFS_H | PREFS_L);
prefs |= PREFS_P;
break;
default:
return _usage();
}
if(argc - optind < 2)
return _usage();
_copy(&prefs, argc - optind, &argv[optind]);
gtk_main();
return 0;
}