-extern void
-bb_show_usage (void)
+extern void bb_show_usage (void)
{
const char *format_string;
const char *usage_string = usage_messages;
exit (EXIT_FAILURE);
}
-static int
-applet_name_compare (const void *x, const void *y)
+static int applet_name_compare (const void *x, const void *y)
{
const char *name = x;
const struct BB_applet *applet = y;
extern const size_t NUM_APPLETS;
-struct BB_applet *
-find_applet_by_name (const char *name)
+struct BB_applet *find_applet_by_name (const char *name)
{
return bsearch (name, applets, NUM_APPLETS, sizeof (struct BB_applet),
applet_name_compare);
}
-void
-run_applet_by_name (const char *name, int argc, char **argv)
+void run_applet_by_name (const char *name, int argc, char **argv)
{
- static int recurse_level = 0;
- extern int been_there_done_that; /* From busybox.c */
-
-#ifdef CONFIG_FEATURE_SUID_CONFIG
- if (recurse_level == 0)
- parse_config_file ();
-#endif
-
- recurse_level++;
- /* Do a binary search to find the applet entry given the name. */
- if ((applet_using = find_applet_by_name (name)) != NULL) {
- bb_applet_name = applet_using->name;
- if (argv[1] && strcmp (argv[1], "--help") == 0) {
- if (strcmp (applet_using->name, "busybox") == 0) {
- if (argv[2])
- applet_using = find_applet_by_name (argv[2]);
- else
- applet_using = NULL;
- }
- if (applet_using)
- bb_show_usage ();
- been_there_done_that = 1;
- busybox_main (0, NULL);
+ if(ENABLE_FEATURE_SUID_CONFIG) parse_config_file ();
+
+ if(!strncmp(name, "busybox", 7)) busybox_main(argc, argv);
+ /* Do a binary search to find the applet entry given the name. */
+ applet_using = find_applet_by_name(name);
+ if(applet_using) {
+ bb_applet_name = applet_using->name;
+ if(argc==2 && !strcmp(argv[1], "--help")) bb_show_usage ();
+ if(ENABLE_FEATURE_SUID) check_suid (applet_using);
+ exit ((*(applet_using->main)) (argc, argv));
}
-#ifdef CONFIG_FEATURE_SUID
- check_suid (applet_using);
-#endif
-
- exit ((*(applet_using->main)) (argc, argv));
- }
- recurse_level--;
}
#include <locale.h>
#endif
-int been_there_done_that = 0; /* Also used in applets.c */
const char *bb_applet_name;
#ifdef CONFIG_FEATURE_INSTALLER
/* abstract link() */
typedef int (*__link_f)(const char *, const char *);
-/*
- * Where in the filesystem is this busybox?
- * [return]
- * malloc'd string w/ full pathname of busybox's location
- * NULL on failure
- */
-static inline char *busybox_fullpath(void)
-{
- return xreadlink("/proc/self/exe");
-}
-
/* create (sym)links for each applet */
static void install_links(const char *busybox, int use_symbolic_links)
{
{
const char *s;
- bb_applet_name = argv[0];
-
- if (bb_applet_name[0] == '-')
- bb_applet_name++;
+ bb_applet_name=argv[0];
+ if (*bb_applet_name == '-') bb_applet_name++;
+ for (s = bb_applet_name; *s ;)
+ if (*(s++) == '/') bb_applet_name = s;
- for (s = bb_applet_name; *s != '\0';) {
- if (*s++ == '/')
- bb_applet_name = s;
- }
-
-#ifdef CONFIG_LOCALE_SUPPORT
-#ifdef CONFIG_INIT
- if(getpid()!=1) /* Do not set locale for `init' */
-#endif
- {
+ /* Set locale for everybody except `init' */
+ if(ENABLE_LOCALE_SUPPORT && (!ENABLE_INIT || getpid()==1))
setlocale(LC_ALL, "");
- }
-#endif
run_applet_by_name(bb_applet_name, argc, argv);
bb_error_msg_and_die("applet not found");
}
-
int busybox_main(int argc, char **argv)
{
- int col = 0, len, i;
-
-#ifdef CONFIG_FEATURE_INSTALLER
/*
* 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 (argc > 1 && (strcmp(argv[1], "--install") == 0)) {
+ if (ENABLE_FEATURE_INSTALLER && argc > 1 && !strcmp(argv[1], "--install")) {
int use_symbolic_links = 0;
int rc = 0;
char *busybox;
}
/* link */
- busybox = busybox_fullpath();
+ busybox = xreadlink("/proc/self/exe");
if (busybox) {
install_links(busybox, use_symbolic_links);
free(busybox);
}
return rc;
}
-#endif /* CONFIG_FEATURE_INSTALLER */
-
- argc--;
-
- /* If we've already been here once, exit now */
- if (been_there_done_that == 1 || argc < 1) {
- const struct BB_applet *a = applets;
- int output_width = 60;
-
-#ifdef CONFIG_FEATURE_AUTOWIDTH
- /* Obtain the terminal width. */
- get_terminal_width_height(0, &output_width, NULL);
- /* leading tab and room to wrap */
- output_width -= 20;
-#endif
- printf("%s\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);
-
- while (a->name != 0) {
- col +=
- printf("%s%s", ((col == 0) ? "\t" : ", "),
- (a++)->name);
- if (col > output_width && a->name != 0) {
- printf(",\n");
- col = 0;
+ /* Deal with --help. (Also print help when called with no arguments) */
+
+ if (argc==1 || !strcmp(argv[1],"--help") ) {
+ if (argc>2) run_applet_by_name(bb_applet_name=argv[2], argc, argv);
+ else {
+ const struct BB_applet *a;
+ int col, output_width;
+
+ if (ENABLE_FEATURE_AUTOWIDTH) {
+ /* Obtain the terminal width. */
+ get_terminal_width_height(0, &output_width, NULL);
+ /* leading tab and room to wrap */
+ output_width -= 20;
+ } else output_width = 60;
+
+ printf("%s\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);
+ if (col > output_width && a->name) {
+ printf(",\n");
+ col = 0;
+ }
}
+ printf("\n\n");
+ exit(0);
}
- printf("\n\n");
- exit(0);
- }
-
- /* Flag that we've been here already */
- been_there_done_that = 1;
-
- /* Move the command line down a notch */
- /* Preserve pointers so setproctitle() works consistently */
- len = argv[argc] + strlen(argv[argc]) - argv[1];
- memmove(argv[0], argv[1], len);
- memset(argv[0] + len, 0, argv[1] - argv[0]);
-
- /* Fix up the argv pointers */
- len = argv[1] - argv[0];
- memmove(argv, argv + 1, sizeof(char *) * (argc + 1));
- for (i = 0; i < argc; i++)
- argv[i] -= len;
-
- return (main(argc, argv));
+ } else run_applet_by_name(bb_applet_name=argv[1], argc-1, argv+1);
+
+ bb_error_msg_and_die("applet not found");
}
/*
--- /dev/null
+#!/bin/sh
+
+# Tests for busybox applet itself.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+if [ ${#COMMAND} -eq 0 ]; then COMMAND=busybox; fi
+. testing.sh
+
+# We'll assume "cat" is built in, because we need some other command to test.
+
+HELPDUMP=`$COMMAND`
+
+# The gratuitous "\n"s are due to a shell idiosyncrasy: environment variables
+# seem to strip trailing whitespace, which makes cmp and diff unhappy.
+
+ln -s `which "$COMMAND"` busybox-suffix
+ln -s `which "$COMMAND"` unknown
+
+for i in busybox busybox-suffix
+do
+ # The gratuitous "\n"s are due to a shell idiosyncrasy:
+ # environment variables seem to strip trailing whitespace.
+
+ testing "$i" "" "$HELPDUMP\n\n" "" ""
+
+ testing "$i cat" "cat" "moo" "" "moo"
+
+ testing "$i unknown" "unknown 2>&1" \
+ "unknown: applet not found\n" "" ""
+
+ testing "$i --help" "--help 2>&1" "$HELPDUMP\n\n" "" ""
+
+ testing "$i --help cat" "--help cat 2>&1 | grep prints" \
+ "Concatenates FILE(s) and prints them to stdout.\n" "" ""
+
+ testing "$i --help unknown" "--help unknown 2>&1" \
+ "unknown: applet not found\n" "" ""
+
+ COMMAND=./busybox-suffix
+done
+
+COMMAND="./unknown"
+testing "busybox as unknown name" "2>&1" "unknown: applet not found\n" "" ""
+
+rm -f busybox-suffix unknown
+
+exit
+
+General cleanup of command line parsing to allow "busybox" to work as a prefix.
+(I.E. any argv[0] that starts with "busybox" winds up in busybox_main().)
+
+Tests:
+./busybox
+./busybox-walrus
+./busybox ls
+./busybox-walrus ls
+./busybox --help
+./busybox-walrus --help
+./busybox --help ls
+./busybox-walrus --help ls
+./busybox --help walrus
+./busybox-walrus --help walrus
+
+
+
+
+
+
+
+
+
+# These tests require the full option set.
+
+# Longish chunk of data re-used by the next few tests
+
+data="42 1 3 woot
+42 1 010 zoology
+egg 1 2 papyrus
+7 3 42 soup
+999 3 0 algebra
+"
+
+# Sorting with keys
+
+testing "sort one key" "-k4,4 input" \
+"999 3 0 algebra
+egg 1 2 papyrus
+7 3 42 soup
+42 1 3 woot
+42 1 010 zoology
+" "$data" ""
+
+testing "sort key range with numeric option" "-k2,3n input" \
+"42 1 010 zoology
+42 1 3 woot
+egg 1 2 papyrus
+7 3 42 soup
+999 3 0 algebra
+" "$data" ""
+
+# Busybox is definitely doing this one wrong just now...
+
+testing "sort key range with numeric option and global reverse" \
+"-k2,3n -r input" \
+"egg 1 2 papyrus
+42 1 3 woot
+42 1 010 zoology
+999 3 0 algebra
+7 3 42 soup
+" "$data" ""
+
+#
+
+testing "sort key range with multiple options" "-k2,3rn input" \
+"7 3 42 soup
+999 3 0 algebra
+42 1 010 zoology
+42 1 3 woot
+egg 1 2 papyrus
+" "$data" ""
+
+exit $FAILCOUNT
projects / oweals / busybox.git / commitdiff