mirror of
https://github.com/sheumann/hush.git
synced 2024-12-23 05:29:58 +00:00
535 lines
11 KiB
C
535 lines
11 KiB
C
/* vi: set sw=4 ts=4: */
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#include "internal.h"
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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static int been_there_done_that = 0;
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/* It has been alledged that doing such things can
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* help reduce binary size when staticly linking,
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* of course with glibc, this is unlikely as long
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* as we use things like printf -- perhaps a printf
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* replacement may be in order
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*/
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#if 0
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void exit(int status) __attribute__ ((noreturn));
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void exit(int status)
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{
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_exit(status);
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};
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void abort(void) __attribute__ ((__noreturn__));
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void abort(void)
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{
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_exit(0);
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};
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int atexit(void (*__func) (void))
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{
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_exit(0);
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};
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void *__libc_stack_end;
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#endif
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const struct BB_applet applets[] = {
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#ifdef BB_AR
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{"ar", ar_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_BASENAME
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{"basename", basename_main, _BB_DIR_USR_BIN},
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#endif
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{"busybox", busybox_main, _BB_DIR_BIN},
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#ifdef BB_BLOCK_DEVICE
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{"block_device", block_device_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_CAT
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{"cat", cat_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CHMOD_CHOWN_CHGRP
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{"chgrp", chmod_chown_chgrp_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CHMOD_CHOWN_CHGRP
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{"chmod", chmod_chown_chgrp_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CHMOD_CHOWN_CHGRP
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{"chown", chmod_chown_chgrp_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CHROOT
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{"chroot", chroot_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_CLEAR
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{"clear", clear_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_CHVT
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{"chvt", chvt_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_CP_MV
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{"cp", cp_mv_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CUT
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{"cut", cut_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_DATE
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{"date", date_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_DC
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{"dc", dc_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_DD
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{"dd", dd_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_DF
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{"df", df_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_DIRNAME
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{"dirname", dirname_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_DMESG
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{"dmesg", dmesg_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_DU
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{"du", du_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_DUTMP
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{"dutmp", dutmp_main, _BB_DIR_USR_SBIN},
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#endif
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#ifdef BB_ECHO
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{"echo", echo_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_TRUE_FALSE
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{"false", false_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_FBSET
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{"fbset", fbset_main, _BB_DIR_USR_SBIN},
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#endif
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#ifdef BB_FDFLUSH
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{"fdflush", fdflush_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_FIND
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{"find", find_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_FREE
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{"free", free_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_FREERAMDISK
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{"freeramdisk", freeramdisk_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_DEALLOCVT
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{"deallocvt", deallocvt_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_FSCK_MINIX
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{"fsck.minix", fsck_minix_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_GREP
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{"grep", grep_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_GUNZIP
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{"gunzip", gunzip_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_GZIP
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{"gzip", gzip_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_HALT
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{"halt", halt_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_HEAD
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{"head", head_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_HOSTID
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{"hostid", hostid_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_HOSTNAME
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{"hostname", hostname_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_ID
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{"id", id_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_INIT
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{"init", init_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_INSMOD
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{"insmod", insmod_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_KILL
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{"kill", kill_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_KILLALL
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{"killall", kill_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LENGTH
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{"length", length_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LINUXRC
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{"linuxrc", init_main, _BB_DIR_ROOT},
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#endif
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#ifdef BB_LN
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{"ln", ln_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_LOADACM
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{"loadacm", loadacm_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LOADFONT
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{"loadfont", loadfont_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LOADKMAP
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{"loadkmap", loadkmap_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_LOGGER
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{"logger", logger_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LOGNAME
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{"logname", logname_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_LS
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{"ls", ls_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_LSMOD
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{"lsmod", lsmod_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_MAKEDEVS
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{"makedevs", makedevs_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_MD5SUM
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{"md5sum", md5sum_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_MKDIR
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{"mkdir", mkdir_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_MKFIFO
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{"mkfifo", mkfifo_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_MKFS_MINIX
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{"mkfs.minix", mkfs_minix_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_MKNOD
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{"mknod", mknod_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_MKSWAP
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{"mkswap", mkswap_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_MKTEMP
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{"mktemp", mktemp_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_NC
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{"nc", nc_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_MORE
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{"more", more_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_MOUNT
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{"mount", mount_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_MT
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{"mt", mt_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_CP_MV
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{"mv", cp_mv_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_NSLOOKUP
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{"nslookup", nslookup_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_PING
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{"ping", ping_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_POWEROFF
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{"poweroff", poweroff_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_PRINTF
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{"printf", printf_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_PS
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{"ps", ps_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_PWD
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{"pwd", pwd_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_REBOOT
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{"reboot", reboot_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_RM
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{"rm", rm_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_RMDIR
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{"rmdir", rmdir_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_RMMOD
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{"rmmod", rmmod_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_SED
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{"sed", sed_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_SETKEYCODES
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{"setkeycodes", setkeycodes_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_SFDISK
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{"sfdisk", sfdisk_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_SH
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{"sh", shell_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_SLEEP
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{"sleep", sleep_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_SORT
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{"sort", sort_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_SYNC
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{"sync", sync_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_SYSLOGD
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{"syslogd", syslogd_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_SWAPONOFF
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{"swapon", swap_on_off_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_SWAPONOFF
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{"swapoff", swap_on_off_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_TAIL
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{"tail", tail_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_TAR
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{"tar", tar_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_TELNET
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{"telnet", telnet_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_TEST
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{"test", test_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_TEE
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{"tee", tee_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_TOUCH
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{"touch", touch_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_TR
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{"tr", tr_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_TRUE_FALSE
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{"true", true_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_TTY
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{"tty", tty_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_UMOUNT
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{"umount", umount_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_UNAME
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{"uname", uname_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_UNIQ
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{"uniq", uniq_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_UPDATE
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{"update", update_main, _BB_DIR_SBIN},
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#endif
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#ifdef BB_UPTIME
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{"uptime", uptime_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_UUENCODE
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{"uuencode", uuencode_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_UUDECODE
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{"uudecode", uudecode_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_USLEEP
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{"usleep", usleep_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_WC
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{"wc", wc_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_WHICH
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{"which", which_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_WHOAMI
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{"whoami", whoami_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_YES
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{"yes", yes_main, _BB_DIR_USR_BIN},
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#endif
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#ifdef BB_GUNZIP
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{"zcat", gunzip_main, _BB_DIR_BIN},
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#endif
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#ifdef BB_TEST
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{"[", test_main, _BB_DIR_USR_BIN},
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#endif
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{0}
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};
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#ifdef BB_FEATURE_INSTALLER
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/*
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* directory table
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* this should be consistent w/ the enum, internal.h::Location,
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* or else...
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*/
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static char* install_dir[] = {
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"/",
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"/bin",
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"/sbin",
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"/usr/bin",
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"/usr/sbin",
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};
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/* abstract link() */
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typedef int (*__link_f)(const char *, const char *);
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/*
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* Where in the filesystem is this busybox?
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* [return]
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* malloc'd string w/ full pathname of busybox's location
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* NULL on failure
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*/
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static char *busybox_fullpath()
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{
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pid_t pid;
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char path[256];
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char proc[256];
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int len;
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pid = getpid();
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sprintf(proc, "/proc/%d/exe", pid);
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len = readlink(proc, path, 256);
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if (len != -1) {
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path[len] = 0;
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} else {
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fprintf(stderr, "busybox : %s : %s\n", proc, strerror(errno));
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return NULL;
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}
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return strdup(path);
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}
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/* create (sym)links for each applet */
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static int install_links(const char *busybox, int use_symbolic_links)
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{
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__link_f Link = link;
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char command[256];
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int i;
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int rc = 0;
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if (use_symbolic_links) Link = symlink;
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for (i = 0; applets[i].name != NULL; i++) {
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sprintf (
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command,
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"%s/%s",
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install_dir[applets[i].location],
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applets[i].name
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);
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#if 1
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rc |= Link(busybox, command);
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#else
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puts(command);
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#endif
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if (rc) {
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fprintf(stderr,"busybox : %s : %s\n", command, strerror(errno));
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}
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}
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return rc;
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}
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#if 0
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int uninstall_links() ?
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#endif
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#endif /* BB_FEATURE_INSTALLER */
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int main(int argc, char **argv)
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{
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char *s;
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char *name;
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const struct BB_applet *a = applets;
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#ifdef BB_FEATURE_INSTALLER
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/*
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* This style of argument parsing doesn't scale well
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* in the event that busybox starts wanting more --options.
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* If someone has a cleaner approach, by all means implement it.
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*/
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if (argc > 1 && (strcmp(argv[1], "--install") == 0)) {
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int use_symbolic_links = 0;
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int rc = 0;
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char *busybox;
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/* to use symlinks, or not to use symlinks... */
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if (argc > 2) {
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if ((strcmp(argv[2], "-s") == 0)) {
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use_symbolic_links = 1;
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}
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}
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/* link */
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busybox = busybox_fullpath();
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if (busybox) {
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install_links(busybox, use_symbolic_links);
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free(busybox);
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} else {
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rc = 1;
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}
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return rc;
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}
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#endif /* BB_FEATURE_INSTALLER */
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for (s = name = argv[0]; *s != '\0';) {
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if (*s++ == '/')
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name = s;
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}
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*argv = name;
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while (a->name != 0) {
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if (strcmp(name, a->name) == 0) {
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exit(((*(a->main)) (argc, argv)));
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}
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a++;
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}
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return(busybox_main(argc, argv));
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}
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int busybox_main(int argc, char **argv)
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{
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int col = 0;
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argc--;
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argv++;
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if (been_there_done_that == 1 || argc < 1) {
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const struct BB_applet *a = applets;
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fprintf(stderr, "BusyBox v%s (%s) multi-call binary -- GPL2\n\n"
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"Usage: busybox [function] [arguments]...\n"
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" or: [function] [arguments]...\n\n"
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"\tBusyBox is a multi-call binary that combines many common Unix\n"
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"\tutilities into a single executable. Most people will create a\n"
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"\tlink to busybox for each function they wish to use, and BusyBox\n"
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"\twill act like whatever it was invoked as.\n"
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"\nCurrently defined functions:\n", BB_VER, BB_BT);
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while (a->name != 0) {
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col +=
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fprintf(stderr, "%s%s", ((col == 0) ? "\t" : ", "),
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(a++)->name);
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if (col > 60 && a->name != 0) {
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fprintf(stderr, ",\n");
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col = 0;
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}
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}
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fprintf(stderr, "\n\n");
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exit(-1);
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}
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|
/* If we've already been here once, exit now */
|
|
been_there_done_that = 1;
|
|
return (main(argc, argv));
|
|
}
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "linux"
|
|
c-basic-offset: 4
|
|
tab-width: 4
|
|
End:
|
|
*/
|