+/* vi: set sw=4 ts=4: */
/*
* Mini chown/chmod/chgrp implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ *
+ * Copyright (C) 1999,2000 by Lineo, inc.
+ * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* 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
*
*/
+#include "busybox.h"
+#define BB_DECLARE_EXTERN
+#define bb_need_invalid_option
+#define bb_need_too_few_args
+#include "messages.c"
+
#include <stdio.h>
#include <grp.h>
#include <pwd.h>
-#include "internal.h"
-static int uid=-1;
-static int gid=0;
+static long uid = -1;
+static long gid = -1;
static int whichApp;
-static char* invocationName=NULL;
-static mode_t mode=7777;
+static char *theMode = NULL;
#define CHGRP_APP 1
#define CHOWN_APP 2
#define CHMOD_APP 3
-static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
- "Change the group membership of each FILE to GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
- "Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
-"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
-"one or more of the letters rwxst.\n\n"
- "\t-R\tchange files and directories recursively.\n";
-
-
-
-static int fileAction(const char *fileName)
+static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
- struct stat statBuf;
- if (stat(fileName, &statBuf) < 0) {
switch (whichApp) {
- case CHGRP_APP:
- case CHOWN_APP:
- if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statBuf.st_uid), gid) < 0)
- return( TRUE);
- case CHMOD_APP:
- if (chmod(fileName, mode))
- return( TRUE);
+ case CHGRP_APP:
+ case CHOWN_APP:
+#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+ if (lchown
+ (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
+ (gid == -1) ? statbuf->st_gid : gid) == 0)
+#else
+ if (chown
+ (fileName, (whichApp == CHOWN_APP) ? uid : statbuf->st_uid,
+ (gid == -1) ? statbuf->st_gid : gid) == 0)
+#endif
+ {
+ return (TRUE);
+ }
+ break;
+ case CHMOD_APP:
+ /* Parse the specified modes */
+ if (parse_mode(theMode, &(statbuf->st_mode)) == FALSE) {
+ error_msg_and_die( "unknown mode: %s\n", theMode);
+ }
+ if (chmod(fileName, statbuf->st_mode) == 0)
+ return (TRUE);
+ break;
}
- }
- perror(fileName);
- return( FALSE);
+ perror(fileName);
+ return (FALSE);
}
-/* [ugoa]{+|-|=}[rwxstl] */
-int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute)
+int chmod_chown_chgrp_main(int argc, char **argv)
{
- mode_t mode = 0;
- mode_t groups = S_ISVTX;
- char type;
- char c;
-
- do {
- for ( ; ; ) {
- switch ( c = *s++ ) {
- case '\0':
- return (FALSE);
- case 'u':
- groups |= S_ISUID|S_IRWXU;
- continue;
- case 'g':
- groups |= S_ISGID|S_IRWXG;
- continue;
- case 'o':
- groups |= S_IRWXO;
- continue;
- case 'a':
- groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- continue;
- case '+':
- case '=':
- case '-':
- type = c;
- if ( groups == S_ISVTX ) /* The default is "all" */
- groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- break;
- default:
- if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) {
- *and = 0;
- *or = strtol(--s, 0, 010);
- return (TRUE);
- }
- else
- return (FALSE);
- }
- break;
- }
+ int stopIt = FALSE;
+ int recursiveFlag = FALSE;
+ char *groupName=NULL;
+ char *p=NULL;
+ const char *appUsage;
+
+ whichApp = (strcmp(applet_name, "chown") == 0)?
+ CHOWN_APP : (strcmp(applet_name, "chmod") == 0)?
+ CHMOD_APP : CHGRP_APP;
- while ( (c = *s++) != '\0' ) {
- switch ( c ) {
- case ',':
- break;
- case 'r':
- mode |= S_IRUSR|S_IRGRP|S_IROTH;
- continue;
- case 'w':
- mode |= S_IWUSR|S_IWGRP|S_IWOTH;
- continue;
- case 'x':
- mode |= S_IXUSR|S_IXGRP|S_IXOTH;
- continue;
- case 's':
- if ( group_execute != 0 && (groups & S_IRWXG) ) {
- if ( *group_execute < 0 )
- return (FALSE);
- if ( type != '-' ) {
- mode |= S_IXGRP;
- *group_execute = 1;
- }
- }
- mode |= S_ISUID|S_ISGID;
- continue;
- case 'l':
- if ( *group_execute > 0 )
- return (FALSE);
- if ( type != '-' ) {
- *and &= ~S_IXGRP;
- *group_execute = -1;
- }
- mode |= S_ISGID;
- groups |= S_ISGID;
- continue;
- case 't':
- mode |= S_ISVTX;
- continue;
- default:
- return (FALSE);
+ appUsage = (whichApp == CHOWN_APP)?
+ chown_usage : (whichApp == CHMOD_APP) ? chmod_usage : chgrp_usage;
+
+ if (argc < 2)
+ usage(appUsage);
+ argv++;
+
+ /* Parse options */
+ while (--argc >= 0 && *argv && (**argv == '-')) {
+ while (stopIt==FALSE && *++(*argv)) {
+ switch (**argv) {
+ case 'R':
+ recursiveFlag = TRUE;
+ break;
+ default:
+ theMode=*argv-1;
+ stopIt = TRUE;
}
- break;
}
- switch ( type ) {
- case '=':
- *and &= ~(groups);
- /* fall through */
- case '+':
- *or |= mode & groups;
- break;
- case '-':
- *and &= ~(mode & groups);
- *or &= *and;
+ if (stopIt==TRUE)
break;
+ argv++;
+ }
+
+ if (argc == 0 || *argv == NULL) {
+ error_msg(too_few_args);
+ }
+
+ if (whichApp == CHMOD_APP) {
+ if (theMode==NULL)
+ theMode = *argv;
+ } else {
+
+ /* Find the selected group */
+ if (whichApp == CHGRP_APP) {
+ groupName = *argv;
+ gid = strtoul(groupName, &p, 10); /* maybe it's already numeric */
+ if (groupName == p)
+ gid = my_getgrnam(groupName);
+ if (gid == -1)
+ goto bad_group;
+ } else {
+ groupName = strchr(*argv, '.');
+ if (groupName == NULL)
+ groupName = strchr(*argv, ':');
+ if (groupName) {
+ *groupName++ = '\0';
+ gid = strtoul(groupName, &p, 10);
+ if (groupName == p)
+ gid = my_getgrnam(groupName);
+ if (gid == -1)
+ goto bad_group;
+ } else
+ gid = -1;
}
- } while ( c == ',' );
- return (TRUE);
-}
-int chmod_chown_chgrp_main(int argc, char **argv)
-{
- struct group *grp;
- struct passwd *pwd;
- int recursiveFlag=FALSE;
- char *groupName;
- mode_t andWithMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- mode_t orWithMode = 0;
-
-
- whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s %s", *argv,
- (whichApp==TRUE)? chown_usage : chgrp_usage);
- exit( FALSE);
- }
- invocationName=*argv;
- argc--;
- argv++;
-
- /* Parse options */
- while (**argv == '-') {
- while (*++(*argv)) switch (**argv) {
- case 'R':
- recursiveFlag = TRUE;
- break;
- default:
- fprintf(stderr, "Unknown option: %c\n", **argv);
- exit( FALSE);
- }
- argc--;
- argv++;
- }
-
- if ( whichApp == CHMOD_APP ) {
- /* Find the specified modes */
- if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) {
- fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
- exit( FALSE);
+ /* Find the selected user (if appropriate) */
+ if (whichApp == CHOWN_APP) {
+ uid = strtoul(*argv, &p, 10); /* if numeric ... */
+ if (*argv == p)
+ uid = my_getpwnam(*argv);
+ if (uid == -1) {
+ error_msg_and_die( "unknown user name: %s\n", *argv);
+ }
+ }
}
- mode &= andWithMode;
- mode |= orWithMode;
- } else {
-
- /* Find the selected group */
- groupName = strchr(*argv, '.');
- if ( whichApp==TRUE && groupName )
- *groupName++ = '\0';
- else
- groupName = *argv;
- grp = getgrnam(groupName);
- if (grp == NULL) {
- fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
- exit( FALSE);
+
+ /* Ok, ready to do the deed now */
+ if (argc < 1) {
+ error_msg_and_die(too_few_args);
}
- gid = grp->gr_gid;
-
- /* Find the selected user (if appropriate) */
- if (whichApp==TRUE) {
- pwd = getpwnam(*argv);
- if (pwd == NULL) {
- fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
- exit( FALSE);
- }
- uid = pwd->pw_uid;
+ while (argc-- > 1) {
+ if (recursive_action (*(++argv), recursiveFlag, FALSE, FALSE,
+ fileAction, fileAction, NULL) == FALSE)
+ return EXIT_FAILURE;
}
- }
-
- /* Ok, ready to do the deed now */
- if (argc <= 1) {
- fprintf(stderr, "%s: too few arguments", invocationName);
- exit( FALSE);
- }
- while (argc-- > 1) {
- argv++;
- recursiveAction( *argv, recursiveFlag, TRUE, fileAction, fileAction);
- }
- exit(TRUE);
+ return EXIT_SUCCESS;
+
+ bad_group:
+ error_msg_and_die( "unknown group name: %s\n", groupName);
}
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff