mirror of
https://github.com/sheumann/hush.git
synced 2024-08-29 15:29:16 +00:00
147 lines
3.8 KiB
C
147 lines
3.8 KiB
C
/* vi: set sw=4 ts=4: */
|
||
/*
|
||
* BusyBox' main applet dispatcher.
|
||
*
|
||
* Licensed under GPLv2, see file LICENSE in this tarball for details.
|
||
*/
|
||
#include "busybox.h"
|
||
|
||
const char *applet_name ATTRIBUTE_EXTERNALLY_VISIBLE;
|
||
|
||
#ifdef CONFIG_FEATURE_INSTALLER
|
||
/*
|
||
* directory table
|
||
* this should be consistent w/ the enum, busybox.h::Location,
|
||
* or else...
|
||
*/
|
||
static const char usr_bin [] = "/usr/bin";
|
||
static const char usr_sbin[] = "/usr/sbin";
|
||
|
||
static const char* const install_dir[] = {
|
||
&usr_bin [8], /* "", equivalent to "/" for concat_path_file() */
|
||
&usr_bin [4], /* "/bin" */
|
||
&usr_sbin[4], /* "/sbin" */
|
||
usr_bin,
|
||
usr_sbin
|
||
};
|
||
|
||
/* abstract link() */
|
||
typedef int (*link_func)(const char *, const char *);
|
||
|
||
/* create (sym)links for each applet */
|
||
static void install_links(const char *busybox, int use_symbolic_links)
|
||
{
|
||
link_func lf = link;
|
||
char *fpc;
|
||
int i;
|
||
int rc;
|
||
|
||
if (use_symbolic_links)
|
||
lf = symlink;
|
||
|
||
for (i = 0; applets[i].name != NULL; i++) {
|
||
fpc = concat_path_file(
|
||
install_dir[applets[i].location],
|
||
applets[i].name);
|
||
rc = lf(busybox, fpc);
|
||
if (rc != 0 && errno != EEXIST) {
|
||
bb_perror_msg("%s", fpc);
|
||
}
|
||
free(fpc);
|
||
}
|
||
}
|
||
|
||
#else
|
||
#define install_links(x,y)
|
||
#endif /* CONFIG_FEATURE_INSTALLER */
|
||
|
||
int main(int argc, char **argv)
|
||
{
|
||
const char *s;
|
||
|
||
applet_name = argv[0];
|
||
if (*applet_name == '-')
|
||
applet_name++;
|
||
while ((s = strchr(applet_name, '/')))
|
||
applet_name = s + 1;
|
||
|
||
/* Set locale for everybody except 'init' */
|
||
if (ENABLE_LOCALE_SUPPORT && getpid() != 1)
|
||
setlocale(LC_ALL, "");
|
||
|
||
run_applet_by_name(applet_name, argc, argv);
|
||
bb_error_msg_and_die("applet not found");
|
||
}
|
||
|
||
int busybox_main(int argc, char **argv)
|
||
{
|
||
/*
|
||
* This style of argument parsing doesn't scale well
|
||
* in the event that busybox starts wanting more --options.
|
||
* If someone has a cleaner approach, by all means implement it.
|
||
*/
|
||
if (ENABLE_FEATURE_INSTALLER && argc > 1 && !strcmp(argv[1], "--install")) {
|
||
int use_symbolic_links = 0;
|
||
char *busybox;
|
||
|
||
/* to use symlinks, or not to use symlinks... */
|
||
if (argc > 2)
|
||
if (strcmp(argv[2], "-s") == 0)
|
||
use_symbolic_links = 1;
|
||
|
||
/* link */
|
||
// XXX: FIXME: this is broken. Why not just use argv[0] ?
|
||
busybox = xreadlink("/proc/self/exe");
|
||
if (!busybox)
|
||
return 1;
|
||
install_links(busybox, use_symbolic_links);
|
||
if (ENABLE_FEATURE_CLEAN_UP)
|
||
free(busybox);
|
||
return 0;
|
||
}
|
||
|
||
/* Deal with --help. (Also print help when called with no arguments) */
|
||
|
||
if (argc == 1 || !strcmp(argv[1], "--help") ) {
|
||
if (argc > 2) {
|
||
applet_name = argv[2];
|
||
run_applet_by_name(applet_name, 2, argv);
|
||
} else {
|
||
const struct BB_applet *a;
|
||
int col, output_width;
|
||
|
||
output_width = 80 - sizeof("start-stop-daemon, ") - 8;
|
||
if (ENABLE_FEATURE_AUTOWIDTH) {
|
||
/* Obtain the terminal width. */
|
||
get_terminal_width_height(0, &output_width, NULL);
|
||
/* leading tab and room to wrap */
|
||
output_width -= sizeof("start-stop-daemon, ") + 8;
|
||
}
|
||
|
||
printf("%s\n"
|
||
"Copyright (C) 1998-2006 Erik Andersen, Rob Landley, and others.\n"
|
||
"Licensed under GPLv2. See source distribution for full notice.\n\n"
|
||
"Usage: busybox [function] [arguments]...\n"
|
||
" or: [function] [arguments]...\n\n"
|
||
"\tBusyBox is a multi-call binary that combines many common Unix\n"
|
||
"\tutilities into a single executable. Most people will create a\n"
|
||
"\tlink to busybox for each function they wish to use and BusyBox\n"
|
||
"\twill act like whatever it was invoked as!\n"
|
||
"\nCurrently defined functions:\n", bb_msg_full_version);
|
||
col = 0;
|
||
for (a = applets; a->name;) {
|
||
col += printf("%s%s", (col ? ", " : "\t"), a->name);
|
||
a++;
|
||
if (col > output_width && a->name) {
|
||
puts(",");
|
||
col = 0;
|
||
}
|
||
}
|
||
puts("\n");
|
||
return 0;
|
||
}
|
||
} else run_applet_by_name(argv[1], argc - 1, argv + 1);
|
||
|
||
bb_error_msg_and_die("applet not found");
|
||
}
|