mirror of
https://github.com/sheumann/hush.git
synced 2024-08-14 11:28:58 +00:00
200 lines
5.6 KiB
C
200 lines
5.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini run-parts implementation for busybox
|
|
*
|
|
* Copyright (C) 2007 Bernhard Reutner-Fischer
|
|
*
|
|
* Based on a older version that was in busybox which was 1k big.
|
|
* Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
|
|
*
|
|
* Based on the Debian run-parts program, version 1.15
|
|
* Copyright (C) 1996 Jeff Noxon <jeff@router.patch.net>,
|
|
* Copyright (C) 1996-1999 Guy Maor <maor@debian.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
|
|
/* This is my first attempt to write a program in C (well, this is my first
|
|
* attempt to write a program! :-) . */
|
|
|
|
/* This piece of code is heavily based on the original version of run-parts,
|
|
* taken from debian-utils. I've only removed the long options and the
|
|
* report mode. As the original run-parts support only long options, I've
|
|
* broken compatibility because the BusyBox policy doesn't allow them.
|
|
*/
|
|
|
|
//usage:#define run_parts_trivial_usage
|
|
//usage: "[-a ARG]... [-u UMASK] "
|
|
//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS("[--reverse] [--test] [--exit-on-error] "IF_FEATURE_RUN_PARTS_FANCY("[--list] "))
|
|
//usage: "DIRECTORY"
|
|
//usage:#define run_parts_full_usage "\n\n"
|
|
//usage: "Run a bunch of scripts in DIRECTORY\n"
|
|
//usage: "\n -a ARG Pass ARG as argument to scripts"
|
|
//usage: "\n -u UMASK Set UMASK before running scripts"
|
|
//usage: IF_FEATURE_RUN_PARTS_LONG_OPTIONS(
|
|
//usage: "\n --reverse Reverse execution order"
|
|
//usage: "\n --test Dry run"
|
|
//usage: "\n --exit-on-error Exit if a script exits with non-zero"
|
|
//usage: IF_FEATURE_RUN_PARTS_FANCY(
|
|
//usage: "\n --list Print names of matching files even if they are not executable"
|
|
//usage: )
|
|
//usage: )
|
|
//usage:
|
|
//usage:#define run_parts_example_usage
|
|
//usage: "$ run-parts -a start /etc/init.d\n"
|
|
//usage: "$ run-parts -a stop=now /etc/init.d\n\n"
|
|
//usage: "Let's assume you have a script foo/dosomething:\n"
|
|
//usage: "#!/bin/sh\n"
|
|
//usage: "for i in $*; do eval $i; done; unset i\n"
|
|
//usage: "case \"$1\" in\n"
|
|
//usage: "start*) echo starting something;;\n"
|
|
//usage: "stop*) set -x; shutdown -h $stop;;\n"
|
|
//usage: "esac\n\n"
|
|
//usage: "Running this yields:\n"
|
|
//usage: "$run-parts -a stop=+4m foo/\n"
|
|
//usage: "+ shutdown -h +4m"
|
|
|
|
#include "libbb.h"
|
|
|
|
struct globals {
|
|
char **names;
|
|
int cur;
|
|
char *cmd[2 /* using 1 provokes compiler warning */];
|
|
} FIX_ALIASING;
|
|
#define G (*(struct globals*)&bb_common_bufsiz1)
|
|
#define names (G.names)
|
|
#define cur (G.cur )
|
|
#define cmd (G.cmd )
|
|
#define INIT_G() do { } while (0)
|
|
|
|
enum { NUM_CMD = (COMMON_BUFSIZE - sizeof(G)) / sizeof(cmd[0]) - 1 };
|
|
|
|
enum {
|
|
OPT_a = (1 << 0),
|
|
OPT_u = (1 << 1),
|
|
OPT_r = (1 << 2) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
|
|
OPT_t = (1 << 3) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
|
|
OPT_e = (1 << 4) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS,
|
|
OPT_l = (1 << 5) * ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
|
|
* ENABLE_FEATURE_RUN_PARTS_FANCY,
|
|
};
|
|
|
|
/* Is this a valid filename (upper/lower alpha, digits,
|
|
* underscores, and hyphens only?)
|
|
*/
|
|
static bool invalid_name(const char *c)
|
|
{
|
|
c = bb_basename(c);
|
|
|
|
while (*c && (isalnum(*c) || *c == '_' || *c == '-'))
|
|
c++;
|
|
|
|
return *c; /* TRUE (!0) if terminating NUL is not reached */
|
|
}
|
|
|
|
static int bb_alphasort(const void *p1, const void *p2)
|
|
{
|
|
int r = strcmp(*(char **) p1, *(char **) p2);
|
|
return (option_mask32 & OPT_r) ? -r : r;
|
|
}
|
|
|
|
static int FAST_FUNC act(const char *file, struct stat *statbuf, void *args UNUSED_PARAM, int depth)
|
|
{
|
|
if (depth == 1)
|
|
return TRUE;
|
|
|
|
if (depth == 2
|
|
&& ( !(statbuf->st_mode & (S_IFREG | S_IFLNK))
|
|
|| invalid_name(file)
|
|
|| (!(option_mask32 & OPT_l) && access(file, X_OK) != 0))
|
|
) {
|
|
return SKIP;
|
|
}
|
|
|
|
names = xrealloc_vector(names, 4, cur);
|
|
names[cur++] = xstrdup(file);
|
|
/*names[cur] = NULL; - xrealloc_vector did it */
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
|
|
static const char runparts_longopts[] ALIGN1 =
|
|
"arg\0" Required_argument "a"
|
|
"umask\0" Required_argument "u"
|
|
//TODO: "verbose\0" No_argument "v"
|
|
"reverse\0" No_argument "\xf0"
|
|
"test\0" No_argument "\xf1"
|
|
"exit-on-error\0" No_argument "\xf2"
|
|
#if ENABLE_FEATURE_RUN_PARTS_FANCY
|
|
"list\0" No_argument "\xf3"
|
|
#endif
|
|
;
|
|
#endif
|
|
|
|
int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int run_parts_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
const char *umask_p = "22";
|
|
llist_t *arg_list = NULL;
|
|
unsigned n;
|
|
int ret;
|
|
|
|
INIT_G();
|
|
|
|
#if ENABLE_FEATURE_RUN_PARTS_LONG_OPTIONS
|
|
applet_long_options = runparts_longopts;
|
|
#endif
|
|
/* We require exactly one argument: the directory name */
|
|
opt_complementary = "=1:a::";
|
|
getopt32(argv, "a:u:", &arg_list, &umask_p);
|
|
|
|
umask(xstrtou_range(umask_p, 8, 0, 07777));
|
|
|
|
n = 1;
|
|
while (arg_list && n < NUM_CMD) {
|
|
cmd[n++] = llist_pop(&arg_list);
|
|
}
|
|
/* cmd[n] = NULL; - is already zeroed out */
|
|
|
|
/* run-parts has to sort executables by name before running them */
|
|
|
|
recursive_action(argv[optind],
|
|
ACTION_RECURSE|ACTION_FOLLOWLINKS,
|
|
act, /* file action */
|
|
act, /* dir action */
|
|
NULL, /* user data */
|
|
1 /* depth */
|
|
);
|
|
|
|
if (!names)
|
|
return 0;
|
|
|
|
qsort(names, cur, sizeof(char *), bb_alphasort);
|
|
|
|
n = 0;
|
|
while (1) {
|
|
char *name = *names++;
|
|
if (!name)
|
|
break;
|
|
if (option_mask32 & (OPT_t | OPT_l)) {
|
|
puts(name);
|
|
continue;
|
|
}
|
|
cmd[0] = name;
|
|
ret = spawn_and_wait(cmd);
|
|
if (ret == 0)
|
|
continue;
|
|
n = 1;
|
|
if (ret < 0)
|
|
bb_perror_msg("can't execute '%s'", name);
|
|
else /* ret > 0 */
|
|
bb_error_msg("%s exited with code %d", name, ret & 0xff);
|
|
|
|
if (option_mask32 & OPT_e)
|
|
xfunc_die();
|
|
}
|
|
|
|
return n;
|
|
}
|