* isn't something I'm going to worry about... If you wrote something
* here, please feel free to acknowledge your work.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
* Permission has been granted to redistribute this code under the GPL.
*
+ * Licensed under GPLv2 or later, see file License in this tarball for details.
*/
+#include "busybox.h"
#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
#include <string.h>
#include <assert.h>
-#include "busybox.h"
-
-const char usage_messages[] =
+#if ENABLE_SHOW_USAGE && !ENABLE_FEATURE_COMPRESS_USAGE
+static const char usage_messages[] =
#define MAKE_USAGE
#include "usage.h"
-
#include "applets.h"
-
;
-
#undef MAKE_USAGE
+#else
+#define usage_messages 0
+#endif /* ENABLE_SHOW_USAGE */
+
#undef APPLET
#undef APPLET_NOUSAGE
#undef PROTOTYPES
#include "applets.h"
-
static struct BB_applet *applet_using;
/* The -1 arises because of the {0,NULL,0,-1} entry above. */
#ifdef CONFIG_FEATURE_SUID_CONFIG
-#include <sys/stat.h>
#include <ctype.h>
#include "pwd_.h"
#include "grp_.h"
/* Next, advance past all leading space and return a ptr to the
* first non-space char; possibly the terminating nul. */
- return (char *) bb_skip_whitespace(s);
+ return skip_whitespace(s);
}
/* Get the specified mode. */
- e = (char *) bb_skip_whitespace(e+1);
+ e = skip_whitespace(e+1);
for (i=0 ; i < 3 ; i++) {
const char *q;
}
/* Now get the the user/group info. */
-
- s = (char *) bb_skip_whitespace(e);
+
+ s = skip_whitespace(e);
/* Note: We require whitespace between the mode and the
* user/group info. */
}
#else
-#define parse_config_file(x)
+#define parse_config_file()
#endif /* CONFIG_FEATURE_SUID_CONFIG */
#ifdef CONFIG_FEATURE_SUID
bb_error_msg_and_die ("You have no permission to run this applet!");
if ((sct->m_mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) { /* *both* have to be set for sgid */
- if (setegid (sct->m_gid))
- bb_error_msg_and_die
- ("BusyBox binary has insufficient rights to set proper GID for applet!");
- } else
- setgid (rgid); /* no sgid -> drop */
-
- if (sct->m_mode & S_ISUID) {
- if (seteuid (sct->m_uid))
- bb_error_msg_and_die
- ("BusyBox binary has insufficient rights to set proper UID for applet!");
- } else
- setuid (ruid); /* no suid -> drop */
+ xsetgid(sct->m_gid);
+ } else xsetgid(rgid); /* no sgid -> drop */
+
+ if (sct->m_mode & S_ISUID) xsetuid(sct->m_uid);
+ else xsetuid(ruid); /* no suid -> drop */
} else {
- /* default: drop all priviledges */
- setgid (rgid);
- setuid (ruid);
+ /* default: drop all privileges */
+ xsetgid(rgid);
+ xsetuid(ruid);
}
return;
} else {
#endif
if (applet->need_suid == _BB_SUID_ALWAYS) {
- if (geteuid () != 0)
- bb_error_msg_and_die ("This applet requires root priviledges!");
+ if (geteuid()) bb_error_msg_and_die("Applet requires root privileges!");
} else if (applet->need_suid == _BB_SUID_NEVER) {
- setgid (rgid); /* drop all priviledges */
- setuid (ruid);
+ xsetgid(rgid); /* drop all privileges */
+ xsetuid(ruid);
}
}
#else
+#if ENABLE_FEATURE_COMPRESS_USAGE
+#include "usage_compressed.h"
+#include "unarchive.h"
-extern void bb_show_usage (void)
+static const char *unpack_usage_messages(void)
{
- const char *format_string;
- const char *usage_string = usage_messages;
- int i;
-
- for (i = applet_using - applets; i > 0;) {
- if (!*usage_string++) {
- --i;
+ int input[2], output[2], pid;
+ char *buf;
+
+ if(pipe(input) < 0 || pipe(output) < 0)
+ exit(1);
+
+ pid = fork();
+ switch (pid) {
+ case -1: /* error */
+ exit(1);
+ case 0: /* child */
+ close(input[1]);
+ close(output[0]);
+ uncompressStream(input[0], output[1]);
+ exit(0);
}
- }
+ /* parent */
+
+ close(input[0]);
+ close(output[1]);
+ pid = fork();
+ switch (pid) {
+ case -1: /* error */
+ exit(1);
+ case 0: /* child */
+ full_write(input[1], packed_usage, sizeof(packed_usage));
+ exit(0);
+ }
+ /* parent */
+ close(input[1]);
- format_string = "%s\n\nUsage: %s %s\n\n";
- if (*usage_string == '\b')
- format_string = "%s\n\nNo help available.\n\n";
- fprintf (stderr, format_string, bb_msg_full_version, applet_using->name,
- usage_string);
+ buf = xmalloc(SIZEOF_usage_messages);
+ full_read(output[0], buf, SIZEOF_usage_messages);
+ return buf;
+}
+
+#else
+#define unpack_usage_messages() usage_messages
+#endif /* ENABLE_FEATURE_COMPRESS_USAGE */
+
+void bb_show_usage (void)
+{
+ if (ENABLE_SHOW_USAGE) {
+ const char *format_string;
+ const char *usage_string = unpack_usage_messages();
+ int i;
+
+ for (i = applet_using - applets; i > 0;)
+ if (!*usage_string++) --i;
+
+ format_string = "%s\n\nUsage: %s %s\n\n";
+ if (*usage_string == '\b')
+ format_string = "%s\n\nNo help available.\n\n";
+ fprintf (stderr, format_string, bb_msg_full_version,
+ applet_using->name, usage_string);
+ }
exit (bb_default_error_retval);
}
-static int applet_name_compare (const void *x, const void *y)
+static int applet_name_compare(const void *name, const void *vapplet)
{
- const char *name = x;
- const struct BB_applet *applet = y;
+ const struct BB_applet *applet = vapplet;
- return strcmp (name, applet->name);
+ return strcmp(name, applet->name);
}
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),
+ 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)
{
- if(ENABLE_FEATURE_SUID_CONFIG) parse_config_file ();
+ if (ENABLE_FEATURE_SUID_CONFIG) parse_config_file();
- if(!strncmp(name, "busybox", 7)) busybox_main(argc, argv);
+ 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) {
+ 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));
+ if(argc==2 && !strcmp(argv[1], "--help")) bb_show_usage();
+ if(ENABLE_FEATURE_SUID) check_suid(applet_using);
+ exit((*(applet_using->main))(argc, argv));
}
}
-
-
-/* END CODE */
-/*
- Local Variables:
- c-file-style: "linux"
- c-basic-offset: 4
- tab-width: 4
-End:
-*/
projects / oweals / busybox.git / blobdiff