include $(TOPDIR)Rules.mak
SUBDIRS:=applets archival archival/libunarchive console-tools \
editors fileutils findutils init miscutils modutils networking \
- procps pwd_grp pwd_grp/libpwd_grp shell shellutils sysklogd \
- textutils util-linux libbb
+ procps loginutils shell shellutils sysklogd \
+ textutils util-linux libbb libpwdgrp
all: do-it-all
#define logger_example_usage \
"$ logger "hello"\n"
+#define login_trivial_usage \
+ "[OPTION]... [username] [ENV=VAR ...]"
+#define login_full_usage \
+ "Begin a new session on the system\n\n" \
+ "Options:\n" \
+ "\t-f\tDo not authenticate (user already authenticated)\n" \
+ "\t-h\tName of the remote host for this login.\n" \
+ "\t-p\tPreserve environment."
+
#define logname_trivial_usage \
""
#define logname_full_usage \
"\n\t-g\t\tprint in stty-readable form" \
"\n\t[SETTING]\tsee manpage"
+#define su_trivial_usage \
+ "[OPTION]... [-] [username]"
+#define su_full_usage \
+ "Change user id or become root.\n" \
+ "Options:\n" \
+ "\t-p\tPreserve environment"
+
#define swapoff_trivial_usage \
"[OPTION] [DEVICE]"
#define swapoff_full_usage \
--- /dev/null
+# Makefile for busybox
+#
+# Copyright (C) 1999-2002 Erik Andersen <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
+# 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
+#
+
+TOPDIR:= ../
+LIBPWDGRP_DIR:=./
+include $(TOPDIR).config
+include $(TOPDIR)Rules.mak
+include Makefile.in
+all: $(libraries-y)
+-include $(TOPDIR).depend
+
+clean:
+ rm -f *.o *.a $(AR_TARGET)
+
--- /dev/null
+# Makefile for busybox
+#
+# Copyright (C) 1999-2002 Erik Andersen <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
+# 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
+#
+
+LIBPWDGRP_AR:=libpwdgrp.a
+ifndef $(LIBPWDGRP_DIR)
+LIBPWDGRP_DIR:=$(TOPDIR)libpwdgrp/
+endif
+
+LIBPWDGRP-y:=
+LIBPWDGRP-$(CONFIG_USE_BB_PWD_GRP) += __getgrent.o __getgrent.o __getpwent.o\
+ fgetgrent.o fgetpwent.o getgrgid.o getgrnam.o getpw.o getpwnam.o \
+ getpwuid.o grent.o initgroups.o putpwent.o pwent.o setgroups.o
+LIBPWDGRP-$(CONFIG_USE_BB_SHADOW) += shadow.o
+
+libraries-y+=$(LIBPWDGRP_DIR)$(LIBPWDGRP_AR)
+
+$(LIBPWDGRP_DIR)$(LIBPWDGRP_AR): $(patsubst %,$(LIBPWDGRP_DIR)%, $(LIBPWDGRP-y))
+ $(AR) -ro $@ $(patsubst %,$(LIBPWDGRP_DIR)%, $(LIBPWDGRP-y))
+
--- /dev/null
+/*
+ * __getgrent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include "grp.h"
+
+/*
+ * Define GR_SCALE_DYNAMIC if you want grp to dynamically scale its read buffer
+ * so that lines of any length can be used. On very very small systems,
+ * you may want to leave this undefined becasue it will make the grp functions
+ * somewhat larger (because of the inclusion of malloc and the code necessary).
+ * On larger systems, you will want to define this, because grp will _not_
+ * deal with long lines gracefully (they will be skipped).
+ */
+#undef GR_SCALE_DYNAMIC
+
+#ifndef GR_SCALE_DYNAMIC
+/*
+ * If scaling is not dynamic, the buffers will be statically allocated, and
+ * maximums must be chosen. GR_MAX_LINE_LEN is the maximum number of
+ * characters per line in the group file. GR_MAX_MEMBERS is the maximum
+ * number of members of any given group.
+ */
+#define GR_MAX_LINE_LEN 128
+/* GR_MAX_MEMBERS = (GR_MAX_LINE_LEN-(24+3+6))/9 */
+#define GR_MAX_MEMBERS 11
+
+#endif /* !GR_SCALE_DYNAMIC */
+
+
+/*
+ * Define GR_DYNAMIC_GROUP_LIST to make initgroups() dynamically allocate
+ * space for it's GID array before calling setgroups(). This is probably
+ * unnecessary scalage, so it's undefined by default.
+ */
+#undef GR_DYNAMIC_GROUP_LIST
+
+#ifndef GR_DYNAMIC_GROUP_LIST
+/*
+ * GR_MAX_GROUPS is the size of the static array initgroups() uses for
+ * its static GID array if GR_DYNAMIC_GROUP_LIST isn't defined.
+ */
+#define GR_MAX_GROUPS 64
+
+#endif /* !GR_DYNAMIC_GROUP_LIST */
+
+
+/*
+ * This is the core group-file read function. It behaves exactly like
+ * getgrent() except that it is passed a file descriptor. getgrent()
+ * is just a wrapper for this function.
+ */
+struct group *__getgrent(int grp_fd)
+{
+#ifndef GR_SCALE_DYNAMIC
+ static char line_buff[GR_MAX_LINE_LEN];
+ static char *members[GR_MAX_MEMBERS];
+#else
+ static char *line_buff = NULL;
+ static char **members = NULL;
+ short line_index;
+ short buff_size;
+#endif
+ static struct group group;
+ register char *ptr;
+ char *field_begin;
+ short member_num;
+ char *endptr;
+ int line_len;
+
+
+ /* We use the restart label to handle malformatted lines */
+ restart:
+#ifdef GR_SCALE_DYNAMIC
+ line_index = 0;
+ buff_size = 256;
+#endif
+
+#ifndef GR_SCALE_DYNAMIC
+ /* Read the line into the static buffer */
+ if ((line_len = read(grp_fd, line_buff, GR_MAX_LINE_LEN)) <= 0)
+ return NULL;
+ field_begin = strchr(line_buff, '\n');
+ if (field_begin != NULL)
+ lseek(grp_fd, (long) (1 + field_begin - (line_buff + line_len)),
+ SEEK_CUR);
+ else { /* The line is too long - skip it :-\ */
+
+ do {
+ if ((line_len = read(grp_fd, line_buff, GR_MAX_LINE_LEN)) <= 0)
+ return NULL;
+ } while (!(field_begin = strchr(line_buff, '\n')));
+ lseek(grp_fd, (long) ((field_begin - line_buff) - line_len + 1),
+ SEEK_CUR);
+ goto restart;
+ }
+ if (*line_buff == '#' || *line_buff == ' ' || *line_buff == '\n' ||
+ *line_buff == '\t')
+ goto restart;
+ *field_begin = '\0';
+
+#else /* !GR_SCALE_DYNAMIC */
+ line_buff = realloc(line_buff, buff_size);
+ while (1) {
+ if ((line_len = read(grp_fd, line_buff + line_index,
+ buff_size - line_index)) <= 0)
+ return NULL;
+ field_begin = strchr(line_buff, '\n');
+ if (field_begin != NULL) {
+ lseek(grp_fd,
+ (long) (1 + field_begin -
+ (line_len + line_index + line_buff)), SEEK_CUR);
+ *field_begin = '\0';
+ if (*line_buff == '#' || *line_buff == ' '
+ || *line_buff == '\n' || *line_buff == '\t')
+ goto restart;
+ break;
+ } else { /* Allocate some more space */
+
+ line_index = buff_size;
+ buff_size += 256;
+ line_buff = realloc(line_buff, buff_size);
+ }
+ }
+#endif /* GR_SCALE_DYNAMIC */
+
+ /* Now parse the line */
+ group.gr_name = line_buff;
+ ptr = strchr(line_buff, ':');
+ if (ptr == NULL)
+ goto restart;
+ *ptr++ = '\0';
+
+ group.gr_passwd = ptr;
+ ptr = strchr(ptr, ':');
+ if (ptr == NULL)
+ goto restart;
+ *ptr++ = '\0';
+
+ field_begin = ptr;
+ ptr = strchr(ptr, ':');
+ if (ptr == NULL)
+ goto restart;
+ *ptr++ = '\0';
+
+ group.gr_gid = (gid_t) strtoul(field_begin, &endptr, 10);
+ if (*endptr != '\0')
+ goto restart;
+
+ member_num = 0;
+ field_begin = ptr;
+
+#ifndef GR_SCALE_DYNAMIC
+ while ((ptr = strchr(ptr, ',')) != NULL) {
+ *ptr = '\0';
+ ptr++;
+ members[member_num] = field_begin;
+ field_begin = ptr;
+ member_num++;
+ }
+ if (*field_begin == '\0')
+ members[member_num] = NULL;
+ else {
+ members[member_num] = field_begin;
+ members[member_num + 1] = NULL;
+ }
+#else /* !GR_SCALE_DYNAMIC */
+ if (members != NULL)
+ free(members);
+ members = (char **) malloc((member_num + 1) * sizeof(char *));
+ for ( ; field_begin && *field_begin != '\0'; field_begin = ptr) {
+ if ((ptr = strchr(field_begin, ',')) != NULL)
+ *ptr++ = '\0';
+ members[member_num++] = field_begin;
+ members = (char **) realloc(members,
+ (member_num + 1) * sizeof(char *));
+ }
+ members[member_num] = NULL;
+#endif /* GR_SCALE_DYNAMIC */
+
+ group.gr_mem = members;
+ return &group;
+}
--- /dev/null
+/*
+ * __getpwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include "pwd.h"
+
+#define PWD_BUFFER_SIZE 256
+
+/* This isn't as flash as my previous version -- it doesn't dynamically
+ scale down the gecos on too-long lines, but it also makes fewer syscalls,
+ so it's probably nicer. Write me if you want the old version. Maybe I
+ should include it as a build-time option... ?
+ -Nat <ndf@linux.mit.edu> */
+
+struct passwd *__getpwent(int pwd_fd)
+{
+ static char line_buff[PWD_BUFFER_SIZE];
+ static struct passwd passwd;
+ char *field_begin;
+ char *endptr;
+ char *gid_ptr=NULL;
+ char *uid_ptr=NULL;
+ int line_len;
+ int i;
+
+ /* We use the restart label to handle malformatted lines */
+ restart:
+ /* Read the passwd line into the static buffer using a minimal of
+ syscalls. */
+ if ((line_len = read(pwd_fd, line_buff, PWD_BUFFER_SIZE)) <= 0)
+ return NULL;
+ field_begin = strchr(line_buff, '\n');
+ if (field_begin != NULL)
+ lseek(pwd_fd, (long) (1 + field_begin - (line_buff + line_len)),
+ SEEK_CUR);
+ else { /* The line is too long - skip it. :-\ */
+
+ do {
+ if ((line_len = read(pwd_fd, line_buff, PWD_BUFFER_SIZE)) <= 0)
+ return NULL;
+ } while (!(field_begin = strchr(line_buff, '\n')));
+ lseek(pwd_fd, (long) (field_begin - line_buff) - line_len + 1,
+ SEEK_CUR);
+ goto restart;
+ }
+ if (*line_buff == '#' || *line_buff == ' ' || *line_buff == '\n' ||
+ *line_buff == '\t')
+ goto restart;
+ *field_begin = '\0';
+
+ /* We've read the line; now parse it. */
+ field_begin = line_buff;
+ for (i = 0; i < 7; i++) {
+ switch (i) {
+ case 0:
+ passwd.pw_name = field_begin;
+ break;
+ case 1:
+ passwd.pw_passwd = field_begin;
+ break;
+ case 2:
+ uid_ptr = field_begin;
+ break;
+ case 3:
+ gid_ptr = field_begin;
+ break;
+ case 4:
+ passwd.pw_gecos = field_begin;
+ break;
+ case 5:
+ passwd.pw_dir = field_begin;
+ break;
+ case 6:
+ passwd.pw_shell = field_begin;
+ break;
+ }
+ if (i < 6) {
+ field_begin = strchr(field_begin, ':');
+ if (field_begin == NULL)
+ goto restart;
+ *field_begin++ = '\0';
+ }
+ }
+ passwd.pw_gid = (gid_t) strtoul(gid_ptr, &endptr, 10);
+ if (*endptr != '\0')
+ goto restart;
+
+ passwd.pw_uid = (uid_t) strtoul(uid_ptr, &endptr, 10);
+ if (*endptr != '\0')
+ goto restart;
+
+ return &passwd;
+}
--- /dev/null
+/*
+ * fgetgrent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include "grp.h"
+
+struct group *fgetgrent(FILE * file)
+{
+ if (file == NULL) {
+ errno = EINTR;
+ return NULL;
+ }
+
+ return __getgrent(fileno(file));
+}
--- /dev/null
+/*
+ * fgetpwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include "pwd.h"
+
+struct passwd *fgetpwent(FILE * file)
+{
+ if (file == NULL) {
+ errno = EINTR;
+ return NULL;
+ }
+
+ return __getpwent(fileno(file));
+}
--- /dev/null
+/*
+ * getgrgid.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "grp.h"
+
+struct group *getgrgid(const gid_t gid)
+{
+ struct group *group;
+ int grp_fd;
+
+ if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
+ return NULL;
+
+ while ((group = __getgrent(grp_fd)) != NULL)
+ if (group->gr_gid == gid) {
+ close(grp_fd);
+ return group;
+ }
+
+ close(grp_fd);
+ return NULL;
+}
--- /dev/null
+/*
+ * getgrnam.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "grp.h"
+
+struct group *getgrnam(const char *name)
+{
+ int grp_fd;
+ struct group *group;
+
+ if (name == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
+ return NULL;
+
+ while ((group = __getgrent(grp_fd)) != NULL)
+ if (!strcmp(group->gr_name, name)) {
+ close(grp_fd);
+ return group;
+ }
+
+ close(grp_fd);
+ return NULL;
+}
--- /dev/null
+/*
+ * getpw.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <sys/types.h>
+#include <errno.h>
+#include <stdio.h>
+#include "pwd.h"
+
+int getpw(uid_t uid, char *buf)
+{
+ struct passwd *passwd;
+
+ if (buf == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+ if ((passwd = getpwuid(uid)) == NULL)
+ return -1;
+
+ if (sprintf (buf, "%s:%s:%u:%u:%s:%s:%s", passwd->pw_name, passwd->pw_passwd,
+ passwd->pw_gid, passwd->pw_uid, passwd->pw_gecos, passwd->pw_dir,
+ passwd->pw_shell) < 0) {
+ errno = ENOBUFS;
+ return -1;
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * getpwnam.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include "pwd.h"
+
+
+struct passwd *getpwnam(const char *name)
+{
+ int passwd_fd;
+ struct passwd *passwd;
+
+ if (name == NULL) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ if ((passwd_fd = open("/etc/passwd", O_RDONLY)) < 0)
+ return NULL;
+
+ while ((passwd = __getpwent(passwd_fd)) != NULL)
+ if (!strcmp(passwd->pw_name, name)) {
+ close(passwd_fd);
+ return passwd;
+ }
+
+ close(passwd_fd);
+ return NULL;
+}
--- /dev/null
+/*
+ * getpwuid.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include "pwd.h"
+
+struct passwd *getpwuid(uid_t uid)
+{
+ int passwd_fd;
+ struct passwd *passwd;
+
+ if ((passwd_fd = open("/etc/passwd", O_RDONLY)) < 0)
+ return NULL;
+
+ while ((passwd = __getpwent(passwd_fd)) != NULL)
+ if (passwd->pw_uid == uid) {
+ close(passwd_fd);
+ return passwd;
+ }
+
+ close(passwd_fd);
+ return NULL;
+}
--- /dev/null
+/*
+ * grent.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+/*
+ * setgrent(), endgrent(), and getgrent() are mutually-dependent functions,
+ * so they are all included in the same object file, and thus all linked
+ * in together.
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <fcntl.h>
+#include "grp.h"
+
+static int grp_fd = -1;
+
+void setgrent(void)
+{
+ if (grp_fd != -1)
+ close(grp_fd);
+ grp_fd = open("/etc/group", O_RDONLY);
+}
+
+void endgrent(void)
+{
+ if (grp_fd != -1)
+ close(grp_fd);
+ grp_fd = -1;
+}
+
+struct group *getgrent(void)
+{
+ if (grp_fd == -1)
+ return NULL;
+ return __getgrent(grp_fd);
+}
--- /dev/null
+/*
+ * initgroups.c - This file is part of the libc-8086/grp package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include "grp.h"
+
+/*
+ * Define GR_SCALE_DYNAMIC if you want grp to dynamically scale its read buffer
+ * so that lines of any length can be used. On very very small systems,
+ * you may want to leave this undefined becasue it will make the grp functions
+ * somewhat larger (because of the inclusion of malloc and the code necessary).
+ * On larger systems, you will want to define this, because grp will _not_
+ * deal with long lines gracefully (they will be skipped).
+ */
+#undef GR_SCALE_DYNAMIC
+
+#ifndef GR_SCALE_DYNAMIC
+/*
+ * If scaling is not dynamic, the buffers will be statically allocated, and
+ * maximums must be chosen. GR_MAX_LINE_LEN is the maximum number of
+ * characters per line in the group file. GR_MAX_MEMBERS is the maximum
+ * number of members of any given group.
+ */
+#define GR_MAX_LINE_LEN 128
+/* GR_MAX_MEMBERS = (GR_MAX_LINE_LEN-(24+3+6))/9 */
+#define GR_MAX_MEMBERS 11
+
+#endif /* !GR_SCALE_DYNAMIC */
+
+
+/*
+ * Define GR_DYNAMIC_GROUP_LIST to make initgroups() dynamically allocate
+ * space for it's GID array before calling setgroups(). This is probably
+ * unnecessary scalage, so it's undefined by default.
+ */
+#undef GR_DYNAMIC_GROUP_LIST
+
+#ifndef GR_DYNAMIC_GROUP_LIST
+/*
+ * GR_MAX_GROUPS is the size of the static array initgroups() uses for
+ * its static GID array if GR_DYNAMIC_GROUP_LIST isn't defined.
+ */
+#define GR_MAX_GROUPS 64
+
+#endif /* !GR_DYNAMIC_GROUP_LIST */
+
+int initgroups(__const char *user, gid_t gid)
+{
+ register struct group *group;
+
+#ifndef GR_DYNAMIC_GROUP_LIST
+ gid_t group_list[GR_MAX_GROUPS];
+#else
+ gid_t *group_list = NULL;
+#endif
+ register char **tmp_mem;
+ int num_groups;
+ int grp_fd;
+
+
+ if ((grp_fd = open("/etc/group", O_RDONLY)) < 0)
+ return -1;
+
+ num_groups = 0;
+#ifdef GR_DYNAMIC_GROUP_LIST
+ group_list = (gid_t *) realloc(group_list, 1);
+#endif
+ group_list[num_groups] = gid;
+#ifndef GR_DYNAMIC_GROUP_LIST
+ while (num_groups < GR_MAX_GROUPS &&
+ (group = __getgrent(grp_fd)) != NULL)
+#else
+ while ((group = __getgrent(grp_fd)) != NULL)
+#endif
+ {
+ if (group->gr_gid != gid);
+ {
+ tmp_mem = group->gr_mem;
+ while (*tmp_mem != NULL) {
+ if (!strcmp(*tmp_mem, user)) {
+ num_groups++;
+#ifdef GR_DYNAMIC_GROUP_LIST
+ group_list = (gid_t *) realloc(group_list, num_groups *
+ sizeof(gid_t *));
+#endif
+ group_list[num_groups] = group->gr_gid;
+ }
+ tmp_mem++;
+ }
+ }
+ }
+ close(grp_fd);
+ return setgroups(num_groups, group_list);
+}
--- /dev/null
+/*
+ * putpwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include "pwd.h"
+
+int putpwent(const struct passwd *passwd, FILE * f)
+{
+ if (passwd == NULL || f == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+ if (fprintf (f, "%s:%s:%u:%u:%s:%s:%s\n", passwd->pw_name, passwd->pw_passwd,
+ passwd->pw_gid, passwd->pw_uid, passwd->pw_gecos, passwd->pw_dir,
+ passwd->pw_shell) < 0)
+ return -1;
+
+ return 0;
+}
--- /dev/null
+/*
+ * pwent.c - This file is part of the libc-8086/pwd package for ELKS,
+ * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "busybox.h"
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include "pwd.h"
+#include <fcntl.h>
+
+/*
+ * setpwent(), endpwent(), and getpwent() are included in the same object
+ * file, since one cannot be used without the other two, so it makes sense to
+ * link them all in together.
+ */
+
+/* file descriptor for the password file currently open */
+static int pw_fd = -1;
+
+void setpwent(void)
+{
+ if (pw_fd != -1)
+ close(pw_fd);
+
+ pw_fd = open("/etc/passwd", O_RDONLY);
+}
+
+void endpwent(void)
+{
+ if (pw_fd != -1)
+ close(pw_fd);
+ pw_fd = -1;
+}
+
+struct passwd *getpwent(void)
+{
+ if (pw_fd != -1)
+ return (__getpwent(pw_fd));
+ return NULL;
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Taken from the set of syscalls for uClibc
+ *
+ * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+ * <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 Library 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 Library General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Library 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
+ *
+ */
+
+#include "busybox.h"
+
+#include <errno.h>
+#include <unistd.h>
+#include <features.h>
+#include <sys/types.h>
+/* Kernel headers before 2.1.mumble need this on the Alpha to get
+ _syscall* defined. */
+#define __LIBRARY__
+#include <sys/syscall.h>
+#if __GNU_LIBRARY__ < 5
+/* This is needed for libc5 */
+#include <asm/unistd.h>
+#endif
+#include "grp.h"
+
+//#define __NR_setgroups 81
+_syscall2(int, setgroups, size_t, size, const gid_t *, list);
+
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright 1989 - 1994, Julianne Frances Haugh
+ * <jockgrrl@austin.rr.com>, <jfh@austin.ibm.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/* TODO: fgetspent_r.c getspent_r.c getspnam_r.c sgetspent_r.c
+ * lckpwdf ulckpwdf
+ */
+
+#include "busybox.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "shadow.h"
+
+static FILE *shadow;
+static char spwbuf[BUFSIZ];
+static struct spwd spwd;
+
+#define FIELDS 9
+#define OFIELDS 5
+
+/* setspent - initialize access to shadow text and DBM files */
+void setspent(void)
+{
+ if (shadow) {
+ rewind(shadow);
+ } else {
+ if ((shadow = fopen("/etc/shadow", "r")) == NULL)
+ perror_msg_and_die("/etc/shadow");
+ }
+}
+
+/* endspent - terminate access to shadow text and DBM files */
+void endspent(void)
+{
+ if (shadow)
+ (void) fclose(shadow);
+ shadow = (FILE *) 0;
+}
+
+/* getspent - get a (struct spwd *) from the current shadow file */
+struct spwd *getspent(void)
+{
+ if (!shadow)
+ setspent();
+ return (fgetspent(shadow));
+}
+
+/* getspnam - get a shadow entry by name */
+struct spwd *getspnam(const char *name)
+{
+ struct spwd *sp;
+
+ if (!name || !strlen(name))
+ return NULL;
+
+ setspent();
+ while ((sp = getspent()) != NULL) {
+ if (strcmp(name, sp->sp_namp) == 0)
+ break;
+ }
+ endspent();
+ return (sp);
+}
+
+
+/* sgetspent - convert string in shadow file format to (struct spwd *) */
+/* returns NULL on error */
+struct spwd *sgetspent(const char *string)
+{
+ char *fields[FIELDS];
+ char *cp;
+ char *cpp;
+ int i;
+
+ /*
+ * Copy string to local buffer. It has to be tokenized and we
+ * have to do that to our private copy.
+ */
+
+ if (strlen(string) >= sizeof spwbuf)
+ /* return 0; */
+ return NULL;
+ strcpy(spwbuf, string);
+
+ if ((cp = strrchr(spwbuf, '\n')))
+ *cp = '\0';
+
+ /*
+ * Tokenize the string into colon separated fields. Allow up to
+ * FIELDS different fields.
+ */
+
+ for (cp = spwbuf, i = 0; *cp && i < FIELDS; i++) {
+ fields[i] = cp;
+ while (*cp && *cp != ':')
+ cp++;
+
+ if (*cp)
+ *cp++ = '\0';
+ }
+
+ /*
+ * It is acceptable for the last SVR4 field to be blank. This
+ * results in the loop being terminated early. In which case,
+ * we just make the last field be blank and be done with it.
+ */
+
+ if (i == (FIELDS - 1))
+ fields[i++] = cp;
+
+ if ((cp && *cp) || (i != FIELDS && i != OFIELDS))
+ /* return 0; */
+ return NULL;
+
+ /*
+ * Start populating the structure. The fields are all in
+ * static storage, as is the structure we pass back. If we
+ * ever see a name with '+' as the first character, we try
+ * to turn on NIS processing.
+ */
+
+ spwd.sp_namp = fields[0];
+ spwd.sp_pwdp = fields[1];
+
+ /*
+ * Get the last changed date. For all of the integer fields,
+ * we check for proper format. It is an error to have an
+ * incorrectly formatted number, unless we are using NIS.
+ */
+
+ if ((spwd.sp_lstchg = strtol(fields[2], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[2][0] == '\0')
+ spwd.sp_lstchg = -1;
+
+ /*
+ * Get the minimum period between password changes.
+ */
+
+ if ((spwd.sp_min = strtol(fields[3], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[3][0] == '\0')
+ spwd.sp_min = -1;
+
+ /*
+ * Get the maximum number of days a password is valid.
+ */
+
+ if ((spwd.sp_max = strtol(fields[4], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[4][0] == '\0')
+ spwd.sp_max = -1;
+
+ /*
+ * If there are only OFIELDS fields (this is a SVR3.2 /etc/shadow
+ * formatted file), initialize the other field members to -1.
+ */
+
+ if (i == OFIELDS) {
+ spwd.sp_warn = spwd.sp_inact = spwd.sp_expire = spwd.sp_flag = -1;
+
+ return &spwd;
+ }
+
+ /*
+ * The rest of the fields are mandatory for SVR4, but optional
+ * for anything else. However, if one is present the others
+ * must be as well.
+ */
+
+ /*
+ * Get the number of days of password expiry warning.
+ */
+
+ if ((spwd.sp_warn = strtol(fields[5], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[5][0] == '\0')
+ spwd.sp_warn = -1;
+
+ /*
+ * Get the number of days of inactivity before an account is
+ * disabled.
+ */
+
+ if ((spwd.sp_inact = strtol(fields[6], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[6][0] == '\0')
+ spwd.sp_inact = -1;
+
+ /*
+ * Get the number of days after the epoch before the account is
+ * set to expire.
+ */
+
+ if ((spwd.sp_expire = strtol(fields[7], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[7][0] == '\0')
+ spwd.sp_expire = -1;
+
+ /*
+ * This field is reserved for future use. But it isn't supposed
+ * to have anything other than a valid integer in it.
+ */
+
+ if ((spwd.sp_flag = strtol(fields[8], &cpp, 10)) == 0 && *cpp) {
+ /* return 0; */
+ return NULL;
+ } else if (fields[8][0] == '\0')
+ spwd.sp_flag = -1;
+
+ return (&spwd);
+}
+
+/* fgetspent - get an entry from an /etc/shadow formatted stream */
+struct spwd *fgetspent(FILE *fp)
+{
+ char buf[BUFSIZ];
+ char *cp;
+
+ if (!fp)
+ /* return (0); */
+ return NULL;
+
+ if (fgets(buf, sizeof buf, fp) != (char *) 0) {
+ if ((cp = strchr(buf, '\n')))
+ *cp = '\0';
+ return (sgetspent(buf));
+ }
+ /* return 0; */
+ return NULL;
+}
+
+/*
+ * putspent - put a (struct spwd *) into the (FILE *) you provide.
+ *
+ * this was described in shadow_.h but not implemented, so here
+ * I go. -beppu
+ *
+ */
+int putspent(const struct spwd *sp, FILE *fp)
+{
+ int ret;
+
+ /* seek to end */
+ ret = fseek(fp, 0, SEEK_END);
+ if (ret == -1) {
+ /* return -1; */
+ return 1;
+ }
+
+ /* powered by fprintf */
+ fprintf(fp, "%s:%s:%ld:%ld:%ld:%ld:%ld:%ld:%s\n", sp->sp_namp, /* login name */
+ sp->sp_pwdp, /* encrypted password */
+ sp->sp_lstchg, /* date of last change */
+ sp->sp_min, /* minimum number of days between changes */
+ sp->sp_max, /* maximum number of days between changes */
+ sp->sp_warn, /* number of days of warning before password expires */
+ sp->sp_inact, /* number of days after password expires until
+ the account becomes unusable */
+ sp->sp_expire, /* days since 1/1/70 until account expires */
+ "");
+ return 0;
+}
+
+
--- /dev/null
+# Makefile for busybox
+#
+# Copyright (C) 1999-2002 Erik Andersen <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
+# 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
+#
+
+TOPDIR:= ../
+LOGINUTILS_DIR:=./
+include $(TOPDIR).config
+include $(TOPDIR)Rules.mak
+include Makefile.in
+all: $(libraries-y)
+-include $(TOPDIR).depend
+
+clean:
+ rm -f *.o *.a $(AR_TARGET)
+
--- /dev/null
+# Makefile for busybox
+#
+# Copyright (C) 1999-2002 Erik Andersen <andersee@debian.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+
+LOGINUTILS_AR:=loginutils.a
+ifndef LOGINUTILS_DIR
+LOGINUTILS_DIR:=$(TOPDIR)loginutils/
+endif
+
+LOGINUTILS-y:=
+LOGINUTILS-$(CONFIG_ADDGROUP) += addgroup.o
+LOGINUTILS-$(CONFIG_ADDUSER) += adduser.o
+LOGINUTILS-$(CONFIG_DELUSER) += deluser.o
+LOGINUTILS-$(CONFIG_GETTY) += getty.o
+LOGINUTILS-$(CONFIG_LOGIN) += login.o tinylogin.o
+LOGINUTILS-$(CONFIG_SU) += su.o tinylogin.o
+
+libraries-y+=$(LOGINUTILS_DIR)$(LOGINUTILS_AR)
+
+needcrypt-y:=
+needcrypt-$(CONFIG_LOGIN) := y
+needcrypt-$(CONFIG_SU) := y
+
+ifeq ($(needcrypt-y),y)
+ libraries-y +=-lcrypt
+endif
+
+$(LOGINUTILS_DIR)$(LOGINUTILS_AR): $(patsubst %,$(LOGINUTILS_DIR)%, $(LOGINUTILS-y))
+ $(AR) -ro $@ $(patsubst %,$(LOGINUTILS_DIR)%, $(LOGINUTILS-y))
+
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * addgroup - add users to /etc/passwd and /etc/shadow
+ *
+ * Copyright (C) 1999 by Lineo, inc. and John Beppu
+ * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.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
+ * 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
+ *
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "busybox.h"
+#include "pwd.h"
+#include "grp.h"
+
+#define GROUP_FILE "/etc/group"
+#define SHADOW_FILE "/etc/gshadow"
+
+
+/* structs __________________________ */
+
+/* data _____________________________ */
+
+/* defaults : should this be in an external file? */
+static const char default_passwd[] = "x";
+
+
+/* make sure gr_name isn't taken, make sure gid is kosher
+ * return 1 on failure */
+static int group_study(const char *filename, struct group *g)
+{
+ FILE *etc_group;
+ gid_t desired;
+
+ struct group *grp;
+ const int max = 65000;
+
+ etc_group = xfopen(filename, "r");
+
+ /* make sure gr_name isn't taken, make sure gid is kosher */
+ desired = g->gr_gid;
+ while ((grp = fgetgrent(etc_group))) {
+ if ((strcmp(grp->gr_name, g->gr_name)) == 0) {
+ error_msg_and_die("%s: group already in use\n", g->gr_name);
+ }
+ if ((desired) && grp->gr_gid == desired) {
+ error_msg_and_die("%d: gid has already been allocated\n",
+ desired);
+ }
+ if ((grp->gr_gid > g->gr_gid) && (grp->gr_gid < max)) {
+ g->gr_gid = grp->gr_gid;
+ }
+ }
+ fclose(etc_group);
+
+ /* gid */
+ if (desired) {
+ g->gr_gid = desired;
+ } else {
+ g->gr_gid++;
+ }
+ /* return 1; */
+ return 0;
+}
+
+/* append a new user to the passwd file */
+static int addgroup(const char *filename, char *group, gid_t gid)
+{
+ FILE *etc_group;
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ FILE *etc_gshadow;
+ char *gshadow = SHADOW_FILE;
+#endif
+
+ struct group gr;
+
+ /* group:passwd:gid:userlist */
+ static const char entryfmt[] = "%s:%s:%d:%s\n";
+
+ /* make sure gid and group haven't already been allocated */
+ gr.gr_gid = gid;
+ gr.gr_name = group;
+ if (group_study(filename, &gr))
+ return 1;
+
+ /* add entry to group */
+ etc_group = xfopen(filename, "a");
+
+ fprintf(etc_group, entryfmt, group, default_passwd, gr.gr_gid, "");
+ fclose(etc_group);
+
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ /* add entry to gshadow if necessary */
+ if (access(gshadow, F_OK|W_OK) == 0) {
+ etc_gshadow = xfopen(gshadow, "a");
+ fprintf(etc_gshadow, "%s:!::\n", group);
+ fclose(etc_gshadow);
+ }
+#endif
+
+ /* return 1; */
+ return 0;
+}
+
+/*
+ * addgroup will take a login_name as its first parameter.
+ *
+ * gid
+ *
+ * can be customized via command-line parameters.
+ * ________________________________________________________________________ */
+int addgroup_main(int argc, char **argv)
+{
+ int opt;
+ char *group;
+ gid_t gid = 0;
+
+ /* get remaining args */
+ while ((opt = getopt (argc, argv, "g:")) != -1)
+ switch (opt) {
+ case 'g':
+ gid = strtol(optarg, NULL, 10);
+ break;
+ default:
+ show_usage();
+ break;
+ }
+
+ if (optind >= argc) {
+ show_usage();
+ } else {
+ group = argv[optind];
+ }
+
+ if (geteuid() != 0) {
+ error_msg_and_die
+ ("Only root may add a group to the system.");
+ }
+
+ /* werk */
+ return addgroup(GROUP_FILE, group, gid);
+}
+
+/* $Id: addgroup.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * adduser - add users to /etc/passwd and /etc/shadow
+ *
+ * Copyright (C) 1999 by Lineo, inc. and John Beppu
+ * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.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
+ * 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
+ *
+ */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include "busybox.h"
+#include "pwd.h"
+#include "grp.h"
+
+#define PASSWD_FILE "/etc/passwd"
+#define SHADOW_FILE "/etc/shadow"
+
+
+/* structs __________________________ */
+
+typedef struct {
+ uid_t u;
+ gid_t g;
+} Id;
+
+/* data _____________________________ */
+
+/* defaults : should this be in an external file? */
+static const char default_passwd[] = "x";
+static const char default_gecos[] = "Linux User,,,";
+static const char default_home_prefix[] = "/home";
+static const char default_shell[] = "/bin/sh";
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+
+#include "shadow.h"
+
+/* shadow in use? */
+static int shadow_enabled = 0;
+#endif
+
+/* remix */
+/* EDR recoded such that the uid may be passed in *p */
+static int passwd_study(const char *filename, struct passwd *p)
+{
+ struct passwd *pw;
+ FILE *passwd;
+
+ const int min = 500;
+ const int max = 65000;
+
+ passwd = wfopen(filename, "r");
+ if (!passwd)
+ return 4;
+
+ /* EDR if uid is out of bounds, set to min */
+ if ((p->pw_uid > max) || (p->pw_uid < min))
+ p->pw_uid = min;
+
+ /* stuff to do:
+ * make sure login isn't taken;
+ * find free uid and gid;
+ */
+ while ((pw = fgetpwent(passwd))) {
+ if (strcmp(pw->pw_name, p->pw_name) == 0) {
+ /* return 0; */
+ return 1;
+ }
+ if ((pw->pw_uid >= p->pw_uid) && (pw->pw_uid < max)
+ && (pw->pw_uid >= min)) {
+ p->pw_uid = pw->pw_uid + 1;
+ }
+ }
+
+ /* EDR check for an already existing gid */
+ while (getgrgid(p->pw_uid) != NULL)
+ p->pw_uid++;
+
+ /* EDR also check for an existing group definition */
+ if (getgrnam(p->pw_name) != NULL)
+ return 3;
+
+ /* EDR bounds check */
+ if ((p->pw_uid > max) || (p->pw_uid < min))
+ return 2;
+
+ /* EDR create new gid always = uid */
+ p->pw_gid = p->pw_uid;
+
+ /* return 1; */
+ return 0;
+}
+
+static void addgroup_wrapper(const char *login, gid_t gid)
+{
+ int argc = 3;
+ const char *argv0_save;
+ char group_id[8];
+ char group_name[32];
+ char *argv[] = { group_name, "-g", group_id };
+
+ argv0_save = applet_name;
+ applet_name = "addgroup";
+ safe_strncpy(group_name, login, 32);
+ sprintf(group_id, "%d", gid);
+ addgroup_main(argc, argv);
+ applet_name = argv0_save;
+}
+
+static void passwd_wrapper(const char *login)
+{
+ static const char prog[] = "passwd";
+ execlp(prog, prog, login, NULL);
+ error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually", login);
+}
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+/*
+ * pwd_to_spwd - create entries for new spwd structure
+ *
+ * pwd_to_spwd() creates a new (struct spwd) containing the
+ * information in the pointed-to (struct passwd).
+ */
+#define DAY (24L*3600L)
+#define WEEK (7*DAY)
+#define SCALE DAY
+static struct spwd *pwd_to_spwd(const struct passwd *pw)
+{
+ static struct spwd sp;
+
+ /*
+ * Nice, easy parts first. The name and passwd map directly
+ * from the old password structure to the new one.
+ */
+ sp.sp_namp = pw->pw_name;
+ sp.sp_pwdp = pw->pw_passwd;
+
+ /*
+ * Defaults used if there is no pw_age information.
+ */
+ sp.sp_min = 0;
+ sp.sp_max = (10000L * DAY) / SCALE;
+ sp.sp_lstchg = time((time_t *) 0) / SCALE;
+
+ /*
+ * These fields have no corresponding information in the password
+ * file. They are set to uninitialized values.
+ */
+ sp.sp_warn = -1;
+ sp.sp_expire = -1;
+ sp.sp_inact = -1;
+ sp.sp_flag = -1;
+
+ return &sp;
+}
+#endif
+
+/* putpwent(3) remix */
+static int adduser(const char *filename, struct passwd *p)
+{
+ FILE *passwd;
+ int r;
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ FILE *shadow;
+ struct spwd *sp;
+#endif
+
+ /* make sure everything is kosher and setup uid && gid */
+ passwd = wfopen(filename, "a");
+ if (passwd == NULL) {
+ /* return -1; */
+ return 1;
+ }
+ fseek(passwd, 0, SEEK_END);
+
+ /* if (passwd_study(filename, p) == 0) { */
+ r = passwd_study(filename, p);
+ if (r) {
+ if (r == 1)
+ error_msg("%s: login already in use", p->pw_name);
+ else if (r == 2)
+ error_msg("illegal uid or no uids left");
+ else if (r == 3)
+ error_msg("group name %s already in use", p->pw_name);
+ else
+ error_msg("generic error.");
+ /* return -1; */
+ return 1;
+ }
+
+ /* add to passwd */
+ if (putpwent(p, passwd) == -1) {
+ /* return -1; */
+ return 1;
+ }
+ fclose(passwd);
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ /* add to shadow if necessary */
+ if (shadow_enabled) {
+ shadow = wfopen(SHADOW_FILE, "a");
+ if (shadow == NULL) {
+ /* return -1; */
+ return 1;
+ }
+ fseek(shadow, 0, SEEK_END);
+ sp = pwd_to_spwd(p);
+ sp->sp_max = 99999; /* debianish */
+ sp->sp_warn = 7;
+ fprintf(shadow, "%s:!:%ld:%ld:%ld:%ld:::\n",
+ sp->sp_namp, sp->sp_lstchg, sp->sp_min, sp->sp_max,
+ sp->sp_warn);
+ fclose(shadow);
+ }
+#endif
+
+ /* add to group */
+ /* addgroup should be responsible for dealing w/ gshadow */
+ addgroup_wrapper(p->pw_name, p->pw_gid);
+
+ /* Clear the umask for this process so it doesn't
+ * * screw up the permissions on the mkdir and chown. */
+ umask(0);
+
+ /* mkdir */
+ if (mkdir(p->pw_dir, 0755)) {
+ perror_msg("%s", p->pw_dir);
+ }
+ /* Set the owner and group so it is owned by the new user. */
+ if (chown(p->pw_dir, p->pw_uid, p->pw_gid)) {
+ perror_msg("%s", p->pw_dir);
+ }
+ /* Now fix up the permissions to 2755. Can't do it before now
+ * since chown will clear the setgid bit */
+ if (chmod(p->pw_dir, 02755)) {
+ perror_msg("%s", p->pw_dir);
+ }
+ /* interactively set passwd */
+ passwd_wrapper(p->pw_name);
+
+ return 0;
+}
+
+
+/* return current uid (root is always uid == 0, right?) */
+static inline uid_t i_am_not_root(void)
+{
+ return geteuid();
+}
+
+/*
+ * adduser will take a login_name as its first parameter.
+ *
+ * home
+ * shell
+ * gecos
+ *
+ * can be customized via command-line parameters.
+ * ________________________________________________________________________ */
+int adduser_main(int argc, char **argv)
+{
+ int i = 0;
+ char opt;
+ const char *login;
+ const char *gecos;
+ const char *home = NULL;
+ const char *shell;
+
+ struct passwd pw;
+
+ /* init */
+ if (argc < 2) {
+ show_usage();
+ }
+ gecos = default_gecos;
+ shell = default_shell;
+
+ /* get args */
+ while ((opt = getopt (argc, argv, "h:g:s:")) != -1)
+ switch (opt) {
+ case 'h':
+ home = argv[++i];
+ break;
+ case 'g':
+ gecos = argv[++i];
+ break;
+ case 's':
+ shell = argv[++i];
+ break;
+ default:
+ show_usage ();
+ break;
+ }
+
+ /* got root? */
+ if (i_am_not_root()) {
+ error_msg_and_die( "Only root may add a user or group to the system.");
+ }
+
+ /* get login */
+ if (optind >= argc) {
+ error_msg_and_die( "no user specified");
+ }
+ login = argv[optind];
+
+ /* create string for $HOME if not specified already */
+ if (!home) {
+ home = concat_path_file(default_home_prefix, login);
+ }
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ /* is /etc/shadow in use? */
+ shadow_enabled = (0 == access(SHADOW_FILE, F_OK));
+#endif
+
+ /* create a passwd struct */
+ pw.pw_name = (char *)login;
+ pw.pw_passwd = (char *)default_passwd;
+ pw.pw_uid = 0;
+ pw.pw_gid = 0;
+ pw.pw_gecos = (char *)gecos;
+ pw.pw_dir = (char *)home;
+ pw.pw_shell = (char *)shell;
+
+ /* grand finale */
+ return adduser(PASSWD_FILE, &pw);
+}
+
+/* $Id: adduser.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */
--- /dev/null
+#
+# For a description of the syntax of this configuration file,
+# see scripts/kbuild/config-language.txt.
+#
+
+mainmenu_option next_comment
+comment 'Login/Password Management Utilities'
+
+
+bool 'addgroup' CONFIG_ADDGROUP
+bool 'adduser' CONFIG_ADDUSER
+bool 'deluser' CONFIG_DELUSER
+bool 'delgroup' CONFIG_DELUSER
+bool 'getty' CONFIG_GETTY
+bool 'login' CONFIG_LOGIN
+if [ "$CONFIG_LOGIN" = "y" ]; then
+ bool ' Support for /etc/securetty' CONFIG_FEATURE_SECURETTY
+fi
+bool 'su' CONFIG_SU
+if [ "$CONFIG_ADDUSER" = "y" -o "$CONFIG_DELUSER" = "y" -o "$CONFIG_LOGIN" = "y" -o "$CONFIG_SU" = "y" ]; then
+ bool 'Support for shadow passwords' CONFIG_FEATURE_SHADOWPASSWDS
+fi
+
+endmenu
+
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * deluser (remove lusers from the system ;) for TinyLogin
+ *
+ * Copyright (C) 1999 by Lineo, inc. and John Beppu
+ * Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.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
+ * 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
+ *
+ */
+
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "busybox.h"
+
+#define PASSWD_FILE "/etc/passwd"
+#define GROUP_FILE "/etc/group"
+#define SHADOW_FILE "/etc/shadow"
+#define GSHADOW_FILE "/etc/gshadow"
+
+
+/* where to start and stop deletion */
+typedef struct {
+ size_t start;
+ size_t stop;
+} Bounds;
+
+/* An interesting side-effect of boundary()'s
+ * implementation is that the first user (typically root)
+ * cannot be removed. Let's call it a feature. */
+static inline Bounds boundary(const char *buffer, const char *login)
+{
+ char needle[256];
+ char *start;
+ char *stop;
+ Bounds b;
+
+ snprintf(needle, 256, "\n%s:", login);
+ needle[255] = 0;
+ start = strstr(buffer, needle);
+ if (!start) {
+ b.start = 0;
+ b.stop = 0;
+ return b;
+ }
+ start++;
+
+ stop = index(start, '\n'); /* index is a BSD-ism */
+ b.start = start - buffer;
+ b.stop = stop - buffer;
+ return b;
+}
+
+/* grep -v ^login (except it only deletes the first match) */
+/* ...in fact, I think I'm going to simplify this later */
+static int del_line_matching(const char *login, const char *filename)
+{
+ char *buffer;
+ FILE *passwd;
+ size_t len;
+ Bounds b;
+ struct stat statbuf;
+
+ /* load into buffer */
+ passwd = fopen(filename, "r");
+ if (!passwd) {
+ return 1;
+ }
+ stat(filename, &statbuf);
+ len = statbuf.st_size;
+ buffer = (char *) malloc(len * sizeof(char));
+
+ if (!buffer) {
+ fclose(passwd);
+ return 1;
+ }
+ fread(buffer, len, sizeof(char), passwd);
+
+ fclose(passwd);
+
+ /* find the user to remove */
+ b = boundary(buffer, login);
+ if (b.stop == 0) {
+ free(buffer);
+ return 1;
+ }
+
+ /* write the file w/o the user */
+ passwd = fopen(filename, "w");
+ if (!passwd) {
+ return 1;
+ }
+ fwrite(buffer, (b.start - 1), sizeof(char), passwd);
+ fwrite(&buffer[b.stop], (len - b.stop), sizeof(char), passwd);
+
+ fclose(passwd);
+
+ return 0;
+}
+
+/* ________________________________________________________________________ */
+int delgroup_main(int argc, char **argv)
+{
+ /* int successful; */
+ int failure;
+
+ if (argc != 2) {
+ show_usage();
+ } else {
+
+ failure = del_line_matching(argv[1], GROUP_FILE);
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ if (access(GSHADOW_FILE, W_OK) == 0) {
+ /* EDR the |= works if the error is not 0, so he had it wrong */
+ failure |= del_line_matching(argv[1], GSHADOW_FILE);
+ }
+#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
+ /* if (!successful) { */
+ if (failure) {
+ error_msg_and_die("%s: Group could not be removed\n", argv[1]);
+ }
+
+ }
+ return (EXIT_SUCCESS);
+}
+
+/* ________________________________________________________________________ */
+int deluser_main(int argc, char **argv)
+{
+ /* int successful; */
+ int failure;
+
+ if (argc != 2) {
+ show_usage();
+ } else {
+
+ failure = del_line_matching(argv[1], PASSWD_FILE);
+ /* if (!successful) { */
+ if (failure) {
+ error_msg_and_die("%s: User could not be removed from %s\n",
+ argv[1], PASSWD_FILE);
+ }
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ failure = del_line_matching(argv[1], SHADOW_FILE);
+ /* if (!successful) { */
+ if (failure) {
+ error_msg_and_die("%s: User could not be removed from %s\n",
+ argv[1], SHADOW_FILE);
+ }
+ failure = del_line_matching(argv[1], GSHADOW_FILE);
+ /* if (!successful) { */
+ if (failure) {
+ error_msg_and_die("%s: User could not be removed from %s\n",
+ argv[1], GSHADOW_FILE);
+ }
+#endif /* CONFIG_FEATURE_SHADOWPASSWDS */
+ failure = del_line_matching(argv[1], GROUP_FILE);
+ /* if (!successful) { */
+ if (failure) {
+ error_msg_and_die("%s: User could not be removed from %s\n",
+ argv[1], GROUP_FILE);
+ }
+
+ }
+ return (EXIT_SUCCESS);
+}
+
+/* $Id: deluser.c,v 1.1 2002/06/04 20:45:05 sandman Exp $ */
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/* agetty.c - another getty program for Linux. By W. Z. Venema 1989
+ Ported to Linux by Peter Orbaek <poe@daimi.aau.dk>
+ This program is freely distributable. The entire man-page used to
+ be here. Now read the real man-page agetty.8 instead.
+
+ -f option added by Eric Rasmussen <ear@usfirst.org> - 12/28/95
+
+ 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@misiek.eu.org>
+ - added Native Language Support
+
+ 1999-05-05 Thorsten Kranzkowski <dl8bcu@gmx.net>
+ - enable hardware flow control before displaying /etc/issue
+
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/signal.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <utmp.h>
+#include <getopt.h>
+#include <termios.h>
+#include "busybox.h"
+
+#define _PATH_LOGIN "/bin/login"
+
+#ifdef linux
+#include <sys/param.h>
+#define USE_SYSLOG
+#endif
+
+extern void updwtmp(const char *filename, const struct utmp *ut);
+
+ /* If USE_SYSLOG is undefined all diagnostics go directly to /dev/console. */
+#ifdef USE_SYSLOG
+#include <syslog.h>
+#endif
+
+
+ /*
+ * Some heuristics to find out what environment we are in: if it is not
+ * System V, assume it is SunOS 4.
+ */
+
+#ifdef LOGIN_PROCESS /* defined in System V utmp.h */
+#define SYSV_STYLE /* select System V style getty */
+#endif
+
+ /*
+ * Things you may want to modify.
+ *
+ * If ISSUE is not defined, agetty will never display the contents of the
+ * /etc/issue file. You will not want to spit out large "issue" files at the
+ * wrong baud rate. Relevant for System V only.
+ *
+ * You may disagree with the default line-editing etc. characters defined
+ * below. Note, however, that DEL cannot be used for interrupt generation
+ * and for line editing at the same time.
+ */
+
+#ifdef SYSV_STYLE
+#define ISSUE "/etc/issue" /* displayed before the login prompt */
+#include <sys/utsname.h>
+#include <time.h>
+#endif
+
+#define LOGIN " login: " /* login prompt */
+
+/* Some shorthands for control characters. */
+
+#define CTL(x) (x ^ 0100) /* Assumes ASCII dialect */
+#define CR CTL('M') /* carriage return */
+#define NL CTL('J') /* line feed */
+#define BS CTL('H') /* back space */
+#define DEL CTL('?') /* delete */
+
+/* Defaults for line-editing etc. characters; you may want to change this. */
+
+#define DEF_ERASE DEL /* default erase character */
+#define DEF_INTR CTL('C') /* default interrupt character */
+#define DEF_QUIT CTL('\\') /* default quit char */
+#define DEF_KILL CTL('U') /* default kill char */
+#define DEF_EOF CTL('D') /* default EOF char */
+#define DEF_EOL 0
+#define DEF_SWITCH 0 /* default switch char */
+
+ /*
+ * SunOS 4.1.1 termio is broken. We must use the termios stuff instead,
+ * because the termio -> termios translation does not clear the termios
+ * CIBAUD bits. Therefore, the tty driver would sometimes report that input
+ * baud rate != output baud rate. I did not notice that problem with SunOS
+ * 4.1. We will use termios where available, and termio otherwise.
+ */
+
+/* linux 0.12 termio is broken too, if we use it c_cc[VERASE] isn't set
+ properly, but all is well if we use termios?! */
+
+#ifdef TCGETS
+#undef TCGETA
+#undef TCSETA
+#undef TCSETAW
+#define termio termios
+#define TCGETA TCGETS
+#define TCSETA TCSETS
+#define TCSETAW TCSETSW
+#endif
+
+ /*
+ * This program tries to not use the standard-i/o library. This keeps the
+ * executable small on systems that do not have shared libraries (System V
+ * Release <3).
+ */
+#ifndef BUFSIZ
+#define BUFSIZ 1024
+#endif
+
+ /*
+ * When multiple baud rates are specified on the command line, the first one
+ * we will try is the first one specified.
+ */
+
+#define FIRST_SPEED 0
+
+/* Storage for command-line options. */
+
+#define MAX_SPEED 10 /* max. nr. of baud rates */
+
+struct options {
+ int flags; /* toggle switches, see below */
+ int timeout; /* time-out period */
+ char *login; /* login program */
+ char *tty; /* name of tty */
+ char *initstring; /* modem init string */
+ char *issue; /* alternative issue file */
+ int numspeed; /* number of baud rates to try */
+ int speeds[MAX_SPEED]; /* baud rates to be tried */
+};
+
+#define F_PARSE (1<<0) /* process modem status messages */
+#define F_ISSUE (1<<1) /* display /etc/issue */
+#define F_RTSCTS (1<<2) /* enable RTS/CTS flow control */
+#define F_LOCAL (1<<3) /* force local */
+#define F_INITSTRING (1<<4) /* initstring is set */
+#define F_WAITCRLF (1<<5) /* wait for CR or LF */
+#define F_CUSTISSUE (1<<6) /* give alternative issue file */
+#define F_NOPROMPT (1<<7) /* don't ask for login name! */
+
+/* Storage for things detected while the login name was read. */
+
+struct chardata {
+ int erase; /* erase character */
+ int kill; /* kill character */
+ int eol; /* end-of-line character */
+ int parity; /* what parity did we see */
+ int capslock; /* upper case without lower case */
+};
+
+/* Initial values for the above. */
+
+struct chardata init_chardata = {
+ DEF_ERASE, /* default erase character */
+ DEF_KILL, /* default kill character */
+ 13, /* default eol char */
+ 0, /* space parity */
+ 0, /* no capslock */
+};
+
+struct Speedtab {
+ long speed;
+ int code;
+};
+
+static struct Speedtab speedtab[] = {
+ {50, B50},
+ {75, B75},
+ {110, B110},
+ {134, B134},
+ {150, B150},
+ {200, B200},
+ {300, B300},
+ {600, B600},
+ {1200, B1200},
+ {1800, B1800},
+ {2400, B2400},
+ {4800, B4800},
+ {9600, B9600},
+#ifdef B19200
+ {19200, B19200},
+#endif
+#ifdef B38400
+ {38400, B38400},
+#endif
+#ifdef EXTA
+ {19200, EXTA},
+#endif
+#ifdef EXTB
+ {38400, EXTB},
+#endif
+#ifdef B57600
+ {57600, B57600},
+#endif
+#ifdef B115200
+ {115200, B115200},
+#endif
+#ifdef B230400
+ {230400, B230400},
+#endif
+ {0, 0},
+};
+
+static void parse_args(int argc, char **argv, struct options *op);
+static void parse_speeds(struct options *op, char *arg);
+static void update_utmp(char *line);
+static void open_tty(char *tty, struct termio *tp, int local);
+static void termio_init(struct termio *tp, int speed, struct options *op);
+static void auto_baud(struct termio *tp);
+static void do_prompt(struct options *op, struct termio *tp);
+static void next_speed(struct termio *tp, struct options *op);
+static char *get_logname(struct options *op, struct chardata *cp,
+
+ struct termio *tp);
+static void termio_final(struct options *op, struct termio *tp,
+
+ struct chardata *cp);
+static int caps_lock(const char *s);
+static int bcode(const char *s);
+static void error(const char *fmt, ...);
+
+/* The following is used for understandable diagnostics. */
+
+/* Fake hostname for ut_host specified on command line. */
+static char *fakehost = NULL;
+
+/* ... */
+#ifdef DEBUGGING
+#define debug(s) fprintf(dbf,s); fflush(dbf)
+#define DEBUGTERM "/dev/ttyp0"
+FILE *dbf;
+#else
+#define debug(s) /* nothing */
+#endif
+
+int getty_main(int argc, char **argv)
+{
+ char *logname = NULL; /* login name, given to /bin/login */
+ struct chardata chardata; /* set by get_logname() */
+ struct termio termio; /* terminal mode bits */
+ static struct options options = {
+ F_ISSUE, /* show /etc/issue (SYSV_STYLE) */
+ 0, /* no timeout */
+ _PATH_LOGIN, /* default login program */
+ "tty1", /* default tty line */
+ "", /* modem init string */
+ ISSUE, /* default issue file */
+ 0, /* no baud rates known yet */
+ };
+
+#ifdef DEBUGGING
+ dbf = xfopen(DEBUGTERM, "w");
+
+ {
+ int i;
+
+ for (i = 1; i < argc; i++) {
+ debug(argv[i]);
+ debug("\n");
+ }
+ }
+#endif
+
+ /* Parse command-line arguments. */
+
+ parse_args(argc, argv, &options);
+
+#ifdef __linux__
+ setsid();
+#endif
+
+ /* Update the utmp file. */
+
+#ifdef SYSV_STYLE
+ update_utmp(options.tty);
+#endif
+
+ debug("calling open_tty\n");
+ /* Open the tty as standard { input, output, error }. */
+ open_tty(options.tty, &termio, options.flags & F_LOCAL);
+
+#ifdef __linux__
+ {
+ int iv;
+
+ iv = getpid();
+ if (ioctl(0, TIOCSPGRP, &iv) < 0)
+ perror_msg("ioctl() TIOCSPGRP call failed");
+ }
+#endif
+ /* Initialize the termio settings (raw mode, eight-bit, blocking i/o). */
+ debug("calling termio_init\n");
+ termio_init(&termio, options.speeds[FIRST_SPEED], &options);
+
+ /* write the modem init string and DON'T flush the buffers */
+ if (options.flags & F_INITSTRING) {
+ debug("writing init string\n");
+ write(1, options.initstring, strlen(options.initstring));
+ }
+
+ if (!(options.flags & F_LOCAL)) {
+ /* go to blocking write mode unless -L is specified */
+ fcntl(1, F_SETFL, fcntl(1, F_GETFL, 0) & ~O_NONBLOCK);
+ }
+
+ /* Optionally detect the baud rate from the modem status message. */
+ debug("before autobaud\n");
+ if (options.flags & F_PARSE)
+ auto_baud(&termio);
+
+ /* Set the optional timer. */
+ if (options.timeout)
+ (void) alarm((unsigned) options.timeout);
+
+ /* optionally wait for CR or LF before writing /etc/issue */
+ if (options.flags & F_WAITCRLF) {
+ char ch;
+
+ debug("waiting for cr-lf\n");
+ while (read(0, &ch, 1) == 1) {
+ ch &= 0x7f; /* strip "parity bit" */
+#ifdef DEBUGGING
+ fprintf(dbf, "read %c\n", ch);
+#endif
+ if (ch == '\n' || ch == '\r')
+ break;
+ }
+ }
+
+ chardata = init_chardata;
+ if (!(options.flags & F_NOPROMPT)) {
+ /* Read the login name. */
+ debug("reading login name\n");
+ /* while ((logname = get_logname(&options, &chardata, &termio)) == 0) */
+ while ((logname = get_logname(&options, &chardata, &termio)) ==
+ NULL) next_speed(&termio, &options);
+ }
+
+ /* Disable timer. */
+
+ if (options.timeout)
+ (void) alarm(0);
+
+ /* Finalize the termio settings. */
+
+ termio_final(&options, &termio, &chardata);
+
+ /* Now the newline character should be properly written. */
+
+ (void) write(1, "\n", 1);
+
+ /* Let the login program take care of password validation. */
+
+ (void) execl(options.login, options.login, "--", logname, (char *) 0);
+ error("%s: can't exec %s: %m", options.tty, options.login);
+ return (0); /* quiet GCC */
+}
+
+/* parse-args - parse command-line arguments */
+
+static void parse_args(int argc, char **argv, struct options *op)
+{
+ extern char *optarg; /* getopt */
+ extern int optind; /* getopt */
+ int c;
+
+ while (isascii(c = getopt(argc, argv, "I:LH:f:hil:mt:wn"))) {
+ switch (c) {
+ case 'I':
+ if (!(op->initstring = strdup(optarg))) {
+ error("can't malloc initstring");
+ break;
+ }
+ {
+ char ch, *p, *q;
+ int i;
+
+ /* copy optarg into op->initstring decoding \ddd
+ octal codes into chars */
+ q = op->initstring;
+ p = optarg;
+ while (*p) {
+ if (*p == '\\') { /* know \\ means \ */
+ p++;
+ if (*p == '\\') {
+ ch = '\\';
+ p++;
+ } else { /* handle \000 - \177 */
+ ch = 0;
+ for (i = 1; i <= 3; i++) {
+ if (*p >= '0' && *p <= '7') {
+ ch <<= 3;
+ ch += *p - '0';
+ p++;
+ } else
+ break;
+ }
+ }
+ *q++ = ch;
+ } else {
+ *q++ = *p++;
+ }
+ }
+ *q = '\0';
+ }
+ op->flags |= F_INITSTRING;
+ break;
+
+ case 'L': /* force local */
+ op->flags |= F_LOCAL;
+ break;
+ case 'H': /* fake login host */
+ fakehost = optarg;
+ break;
+ case 'f': /* custom issue file */
+ op->flags |= F_CUSTISSUE;
+ op->issue = optarg;
+ break;
+ case 'h': /* enable h/w flow control */
+ op->flags |= F_RTSCTS;
+ break;
+ case 'i': /* do not show /etc/issue */
+ op->flags &= ~F_ISSUE;
+ break;
+ case 'l':
+ op->login = optarg; /* non-default login program */
+ break;
+ case 'm': /* parse modem status message */
+ op->flags |= F_PARSE;
+ break;
+ case 'n':
+ op->flags |= F_NOPROMPT;
+ break;
+ case 't': /* time out */
+ if ((op->timeout = atoi(optarg)) <= 0)
+ error("bad timeout value: %s", optarg);
+ break;
+ case 'w':
+ op->flags |= F_WAITCRLF;
+ break;
+ default:
+ show_usage();
+ }
+ }
+ debug("after getopt loop\n");
+ if (argc < optind + 2) /* check parameter count */
+ show_usage();
+
+ /* we loosen up a bit and accept both "baudrate tty" and "tty baudrate" */
+ if ('0' <= argv[optind][0] && argv[optind][0] <= '9') {
+ /* a number first, assume it's a speed (BSD style) */
+ parse_speeds(op, argv[optind++]); /* baud rate(s) */
+ op->tty = argv[optind]; /* tty name */
+ } else {
+ op->tty = argv[optind++]; /* tty name */
+ parse_speeds(op, argv[optind]); /* baud rate(s) */
+ }
+
+ optind++;
+ if (argc > optind && argv[optind])
+ setenv("TERM", argv[optind], 1);
+
+ debug("exiting parseargs\n");
+}
+
+/* parse_speeds - parse alternate baud rates */
+
+static void parse_speeds(struct options *op, char *arg)
+{
+ char *cp;
+
+ debug("entered parse_speeds\n");
+ for (cp = strtok(arg, ","); cp != 0; cp = strtok((char *) 0, ",")) {
+ if ((op->speeds[op->numspeed++] = bcode(cp)) <= 0)
+ error("bad speed: %s", cp);
+ if (op->numspeed > MAX_SPEED)
+ error("too many alternate speeds");
+ }
+ debug("exiting parsespeeds\n");
+}
+
+#ifdef SYSV_STYLE
+
+/* update_utmp - update our utmp entry */
+static void update_utmp(char *line)
+{
+ struct utmp ut;
+ struct utmp *utp;
+ time_t t;
+ int mypid = getpid();
+#if ! (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1))
+ struct flock lock;
+#endif
+
+ /*
+ * The utmp file holds miscellaneous information about things started by
+ * /sbin/init and other system-related events. Our purpose is to update
+ * the utmp entry for the current process, in particular the process type
+ * and the tty line we are listening to. Return successfully only if the
+ * utmp file can be opened for update, and if we are able to find our
+ * entry in the utmp file.
+ */
+ utmpname(_PATH_UTMP);
+ setutent();
+ while ((utp = getutent())
+ && !(utp->ut_type == INIT_PROCESS && utp->ut_pid == mypid)) /* nothing */
+ ;
+
+ if (utp) {
+ memcpy(&ut, utp, sizeof(ut));
+ } else {
+ /* some inits don't initialize utmp... */
+ memset(&ut, 0, sizeof(ut));
+ strncpy(ut.ut_id, line + 3, sizeof(ut.ut_id));
+ }
+ /*endutent(); */
+
+ strncpy(ut.ut_user, "LOGIN", sizeof(ut.ut_user));
+ strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+ if (fakehost)
+ strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
+ time(&t);
+ ut.ut_time = t;
+ ut.ut_type = LOGIN_PROCESS;
+ ut.ut_pid = mypid;
+
+ pututline(&ut);
+ endutent();
+
+ {
+ updwtmp(_PATH_WTMP, &ut);
+ }
+}
+
+#endif
+
+/* open_tty - set up tty as standard { input, output, error } */
+static void open_tty(char *tty, struct termio *tp, int local)
+{
+ /* Get rid of the present standard { output, error} if any. */
+
+ (void) close(1);
+ (void) close(2);
+ errno = 0; /* ignore above errors */
+
+ /* Set up new standard input, unless we are given an already opened port. */
+
+ if (strcmp(tty, "-")) {
+ struct stat st;
+
+ /* Sanity checks... */
+
+ if (chdir("/dev"))
+ error("/dev: chdir() failed: %m");
+ if (stat(tty, &st) < 0)
+ error("/dev/%s: %m", tty);
+ if ((st.st_mode & S_IFMT) != S_IFCHR)
+ error("/dev/%s: not a character device", tty);
+
+ /* Open the tty as standard input. */
+
+ (void) close(0);
+ errno = 0; /* ignore close(2) errors */
+
+ debug("open(2)\n");
+ if (open(tty, O_RDWR | O_NONBLOCK, 0) != 0)
+ error("/dev/%s: cannot open as standard input: %m", tty);
+
+ } else {
+
+ /*
+ * Standard input should already be connected to an open port. Make
+ * sure it is open for read/write.
+ */
+
+ if ((fcntl(0, F_GETFL, 0) & O_RDWR) != O_RDWR)
+ error("%s: not open for read/write", tty);
+ }
+
+ /* Set up standard output and standard error file descriptors. */
+ debug("duping\n");
+ if (dup(0) != 1 || dup(0) != 2) /* set up stdout and stderr */
+ error("%s: dup problem: %m", tty); /* we have a problem */
+
+ /*
+ * The following ioctl will fail if stdin is not a tty, but also when
+ * there is noise on the modem control lines. In the latter case, the
+ * common course of action is (1) fix your cables (2) give the modem more
+ * time to properly reset after hanging up. SunOS users can achieve (2)
+ * by patching the SunOS kernel variable "zsadtrlow" to a larger value;
+ * 5 seconds seems to be a good value.
+ */
+
+ if (ioctl(0, TCGETA, tp) < 0)
+ error("%s: ioctl: %m", tty);
+
+ /*
+ * It seems to be a terminal. Set proper protections and ownership. Mode
+ * 0622 is suitable for SYSV <4 because /bin/login does not change
+ * protections. SunOS 4 login will change the protections to 0620 (write
+ * access for group tty) after the login has succeeded.
+ */
+
+#ifdef DEBIAN
+ {
+ /* tty to root.dialout 660 */
+ struct group *gr;
+ int id;
+
+ id = (gr = getgrnam("dialout")) ? gr->gr_gid : 0;
+ chown(tty, 0, id);
+ chmod(tty, 0660);
+
+ /* vcs,vcsa to root.sys 600 */
+ if (!strncmp(tty, "tty", 3) && isdigit(tty[3])) {
+ char *vcs, *vcsa;
+
+ if (!(vcs = strdup(tty)))
+ error("Can't malloc for vcs");
+ if (!(vcsa = malloc(strlen(tty) + 2)))
+ error("Can't malloc for vcsa");
+ strcpy(vcs, "vcs");
+ strcpy(vcs + 3, tty + 3);
+ strcpy(vcsa, "vcsa");
+ strcpy(vcsa + 4, tty + 3);
+
+ id = (gr = getgrnam("sys")) ? gr->gr_gid : 0;
+ chown(vcs, 0, id);
+ chmod(vcs, 0600);
+ chown(vcsa, 0, id);
+ chmod(vcs, 0600);
+
+ free(vcs);
+ free(vcsa);
+ }
+ }
+#else
+ (void) chown(tty, 0, 0); /* root, sys */
+ (void) chmod(tty, 0622); /* crw--w--w- */
+ errno = 0; /* ignore above errors */
+#endif
+}
+
+/* termio_init - initialize termio settings */
+
+static void termio_init(struct termio *tp, int speed, struct options *op)
+{
+
+ /*
+ * Initial termio settings: 8-bit characters, raw-mode, blocking i/o.
+ * Special characters are set after we have read the login name; all
+ * reads will be done in raw mode anyway. Errors will be dealt with
+ * lateron.
+ */
+#ifdef __linux__
+ /* flush input and output queues, important for modems! */
+ (void) ioctl(0, TCFLSH, TCIOFLUSH);
+#endif
+
+ tp->c_cflag = CS8 | HUPCL | CREAD | speed;
+ if (op->flags & F_LOCAL) {
+ tp->c_cflag |= CLOCAL;
+ }
+
+ tp->c_iflag = tp->c_lflag = tp->c_oflag = tp->c_line = 0;
+ tp->c_cc[VMIN] = 1;
+ tp->c_cc[VTIME] = 0;
+
+ /* Optionally enable hardware flow control */
+
+#ifdef CRTSCTS
+ if (op->flags & F_RTSCTS)
+ tp->c_cflag |= CRTSCTS;
+#endif
+
+ (void) ioctl(0, TCSETA, tp);
+
+ /* go to blocking input even in local mode */
+ fcntl(0, F_SETFL, fcntl(0, F_GETFL, 0) & ~O_NONBLOCK);
+
+ debug("term_io 2\n");
+}
+
+/* auto_baud - extract baud rate from modem status message */
+static void auto_baud(struct termio *tp)
+{
+ int speed;
+ int vmin;
+ unsigned iflag;
+ char buf[BUFSIZ];
+ char *bp;
+ int nread;
+
+ /*
+ * This works only if the modem produces its status code AFTER raising
+ * the DCD line, and if the computer is fast enough to set the proper
+ * baud rate before the message has gone by. We expect a message of the
+ * following format:
+ *
+ * <junk><number><junk>
+ *
+ * The number is interpreted as the baud rate of the incoming call. If the
+ * modem does not tell us the baud rate within one second, we will keep
+ * using the current baud rate. It is advisable to enable BREAK
+ * processing (comma-separated list of baud rates) if the processing of
+ * modem status messages is enabled.
+ */
+
+ /*
+ * Use 7-bit characters, don't block if input queue is empty. Errors will
+ * be dealt with lateron.
+ */
+
+ iflag = tp->c_iflag;
+ tp->c_iflag |= ISTRIP; /* enable 8th-bit stripping */
+ vmin = tp->c_cc[VMIN];
+ tp->c_cc[VMIN] = 0; /* don't block if queue empty */
+ (void) ioctl(0, TCSETA, tp);
+
+ /*
+ * Wait for a while, then read everything the modem has said so far and
+ * try to extract the speed of the dial-in call.
+ */
+
+ (void) sleep(1);
+ if ((nread = read(0, buf, sizeof(buf) - 1)) > 0) {
+ buf[nread] = '\0';
+ for (bp = buf; bp < buf + nread; bp++) {
+ if (isascii(*bp) && isdigit(*bp)) {
+ if ((speed = bcode(bp))) {
+ tp->c_cflag &= ~CBAUD;
+ tp->c_cflag |= speed;
+ }
+ break;
+ }
+ }
+ }
+ /* Restore terminal settings. Errors will be dealt with lateron. */
+
+ tp->c_iflag = iflag;
+ tp->c_cc[VMIN] = vmin;
+ (void) ioctl(0, TCSETA, tp);
+}
+
+/* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
+static void do_prompt(struct options *op, struct termio *tp)
+{
+#ifdef ISSUE
+ FILE *fd;
+ int oflag;
+ int c;
+ struct utsname uts;
+
+ (void) uname(&uts);
+#endif
+
+ (void) write(1, "\r\n", 2); /* start a new line */
+#ifdef ISSUE /* optional: show /etc/issue */
+ if ((op->flags & F_ISSUE) && (fd = fopen(op->issue, "r"))) {
+ oflag = tp->c_oflag; /* save current setting */
+ tp->c_oflag |= (ONLCR | OPOST); /* map NL in output to CR-NL */
+ (void) ioctl(0, TCSETAW, tp);
+
+
+ while ((c = getc(fd)) != EOF) {
+ if (c == '\\') {
+ c = getc(fd);
+
+ switch (c) {
+ case 's':
+ (void) printf("%s", uts.sysname);
+ break;
+
+ case 'n':
+ (void) printf("%s", uts.nodename);
+ break;
+
+ case 'r':
+ (void) printf("%s", uts.release);
+ break;
+
+ case 'v':
+ (void) printf("%s", uts.version);
+ break;
+
+ case 'm':
+ (void) printf("%s", uts.machine);
+ break;
+
+ case 'o':
+ {
+ char domainname[256];
+
+ getdomainname(domainname, sizeof(domainname));
+ domainname[sizeof(domainname) - 1] = '\0';
+ printf("%s", domainname);
+ }
+ break;
+
+ case 'd':
+ case 't':
+ {
+ char *weekday[] = { "Sun", "Mon", "Tue", "Wed", "Thu",
+ "Fri", "Sat"
+ };
+ char *month[] = { "Jan", "Feb", "Mar", "Apr", "May",
+ "Jun", "Jul", "Aug", "Sep", "Oct",
+ "Nov", "Dec"
+ };
+ time_t now;
+ struct tm *tm;
+
+ (void) time(&now);
+ tm = localtime(&now);
+
+ if (c == 'd')
+ (void) printf("%s %s %d %d",
+ weekday[tm->tm_wday],
+ month[tm->tm_mon], tm->tm_mday,
+ tm->tm_year <
+ 70 ? tm->tm_year +
+ 2000 : tm->tm_year + 1900);
+ else
+ (void) printf("%02d:%02d:%02d", tm->tm_hour,
+ tm->tm_min, tm->tm_sec);
+
+ break;
+ }
+
+ case 'l':
+ (void) printf("%s", op->tty);
+ break;
+
+ case 'b':
+ {
+ int i;
+
+ for (i = 0; speedtab[i].speed; i++) {
+ if (speedtab[i].code == (tp->c_cflag & CBAUD)) {
+ printf("%ld", speedtab[i].speed);
+ break;
+ }
+ }
+ break;
+ }
+ case 'u':
+ case 'U':
+ {
+ int users = 0;
+ struct utmp *ut;
+
+ setutent();
+ while ((ut = getutent()))
+ if (ut->ut_type == USER_PROCESS)
+ users++;
+ endutent();
+ printf("%d ", users);
+ if (c == 'U')
+ printf((users == 1) ? "user" : "users");
+ break;
+ }
+ default:
+ (void) putchar(c);
+ }
+ } else
+ (void) putchar(c);
+ }
+ fflush(stdout);
+
+ tp->c_oflag = oflag; /* restore settings */
+ (void) ioctl(0, TCSETAW, tp); /* wait till output is gone */
+ (void) fclose(fd);
+ }
+#endif
+#ifdef __linux__
+ {
+ char hn[MAXHOSTNAMELEN + 1];
+
+ (void) gethostname(hn, MAXHOSTNAMELEN);
+ write(1, hn, strlen(hn));
+ }
+#endif
+ (void) write(1, LOGIN, sizeof(LOGIN) - 1); /* always show login prompt */
+}
+
+/* next_speed - select next baud rate */
+static void next_speed(struct termio *tp, struct options *op)
+{
+ static int baud_index = FIRST_SPEED; /* current speed index */
+
+ baud_index = (baud_index + 1) % op->numspeed;
+ tp->c_cflag &= ~CBAUD;
+ tp->c_cflag |= op->speeds[baud_index];
+ (void) ioctl(0, TCSETA, tp);
+}
+
+/* get_logname - get user name, establish parity, speed, erase, kill, eol */
+/* return NULL on failure, logname on success */
+static char *get_logname(struct options *op, struct chardata *cp, struct termio *tp)
+{
+ static char logname[BUFSIZ];
+ char *bp;
+ char c; /* input character, full eight bits */
+ char ascval; /* low 7 bits of input character */
+ int bits; /* # of "1" bits per character */
+ int mask; /* mask with 1 bit up */
+ static char *erase[] = { /* backspace-space-backspace */
+ "\010\040\010", /* space parity */
+ "\010\040\010", /* odd parity */
+ "\210\240\210", /* even parity */
+ "\210\240\210", /* no parity */
+ };
+
+ /* Initialize kill, erase, parity etc. (also after switching speeds). */
+
+ *cp = init_chardata;
+
+ /* Flush pending input (esp. after parsing or switching the baud rate). */
+
+ (void) sleep(1);
+ (void) ioctl(0, TCFLSH, TCIFLUSH);
+
+ /* Prompt for and read a login name. */
+
+ for (*logname = 0; *logname == 0; /* void */ ) {
+
+ /* Write issue file and prompt, with "parity" bit == 0. */
+
+ do_prompt(op, tp);
+
+ /* Read name, watch for break, parity, erase, kill, end-of-line. */
+
+ for (bp = logname, cp->eol = 0; cp->eol == 0; /* void */ ) {
+
+ /* Do not report trivial EINTR/EIO errors. */
+
+ if (read(0, &c, 1) < 1) {
+ if (errno == EINTR || errno == EIO)
+ exit(0);
+ error("%s: read: %m", op->tty);
+ }
+ /* Do BREAK handling elsewhere. */
+
+ if ((c == 0) && op->numspeed > 1)
+ /* return (0); */
+ return NULL;
+
+ /* Do parity bit handling. */
+
+ if (c != (ascval = (c & 0177))) { /* "parity" bit on ? */
+ for (bits = 1, mask = 1; mask & 0177; mask <<= 1)
+ if (mask & ascval)
+ bits++; /* count "1" bits */
+ cp->parity |= ((bits & 1) ? 1 : 2);
+ }
+ /* Do erase, kill and end-of-line processing. */
+
+ switch (ascval) {
+ case CR:
+ case NL:
+ *bp = 0; /* terminate logname */
+ cp->eol = ascval; /* set end-of-line char */
+ break;
+ case BS:
+ case DEL:
+ case '#':
+ cp->erase = ascval; /* set erase character */
+ if (bp > logname) {
+ (void) write(1, erase[cp->parity], 3);
+ bp--;
+ }
+ break;
+ case CTL('U'):
+ case '@':
+ cp->kill = ascval; /* set kill character */
+ while (bp > logname) {
+ (void) write(1, erase[cp->parity], 3);
+ bp--;
+ }
+ break;
+ case CTL('D'):
+ exit(0);
+ default:
+ if (!isascii(ascval) || !isprint(ascval)) {
+ /* ignore garbage characters */ ;
+ } else if (bp - logname >= sizeof(logname) - 1) {
+ error("%s: input overrun", op->tty);
+ } else {
+ (void) write(1, &c, 1); /* echo the character */
+ *bp++ = ascval; /* and store it */
+ }
+ break;
+ }
+ }
+ }
+ /* Handle names with upper case and no lower case. */
+
+ if ((cp->capslock = caps_lock(logname))) {
+ for (bp = logname; *bp; bp++)
+ if (isupper(*bp))
+ *bp = tolower(*bp); /* map name to lower case */
+ }
+ return (logname);
+}
+
+/* termio_final - set the final tty mode bits */
+static void termio_final(struct options *op, struct termio *tp, struct chardata *cp)
+{
+ /* General terminal-independent stuff. */
+
+ tp->c_iflag |= IXON | IXOFF; /* 2-way flow control */
+ tp->c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE;
+ /* no longer| ECHOCTL | ECHOPRT */
+ tp->c_oflag |= OPOST;
+ /* tp->c_cflag = 0; */
+ tp->c_cc[VINTR] = DEF_INTR; /* default interrupt */
+ tp->c_cc[VQUIT] = DEF_QUIT; /* default quit */
+ tp->c_cc[VEOF] = DEF_EOF; /* default EOF character */
+ tp->c_cc[VEOL] = DEF_EOL;
+#ifdef __linux__
+ tp->c_cc[VSWTC] = DEF_SWITCH; /* default switch character */
+#else
+ tp->c_cc[VSWTCH] = DEF_SWITCH; /* default switch character */
+#endif
+
+ /* Account for special characters seen in input. */
+
+ if (cp->eol == CR) {
+ tp->c_iflag |= ICRNL; /* map CR in input to NL */
+ tp->c_oflag |= ONLCR; /* map NL in output to CR-NL */
+ }
+ tp->c_cc[VERASE] = cp->erase; /* set erase character */
+ tp->c_cc[VKILL] = cp->kill; /* set kill character */
+
+ /* Account for the presence or absence of parity bits in input. */
+
+ switch (cp->parity) {
+ case 0: /* space (always 0) parity */
+ break;
+ case 1: /* odd parity */
+ tp->c_cflag |= PARODD;
+ /* FALLTHROUGH */
+ case 2: /* even parity */
+ tp->c_cflag |= PARENB;
+ tp->c_iflag |= INPCK | ISTRIP;
+ /* FALLTHROUGH */
+ case (1 | 2): /* no parity bit */
+ tp->c_cflag &= ~CSIZE;
+ tp->c_cflag |= CS7;
+ break;
+ }
+ /* Account for upper case without lower case. */
+
+ if (cp->capslock) {
+ tp->c_iflag |= IUCLC;
+ tp->c_lflag |= XCASE;
+ tp->c_oflag |= OLCUC;
+ }
+ /* Optionally enable hardware flow control */
+
+#ifdef CRTSCTS
+ if (op->flags & F_RTSCTS)
+ tp->c_cflag |= CRTSCTS;
+#endif
+
+ /* Finally, make the new settings effective */
+
+ if (ioctl(0, TCSETA, tp) < 0)
+ error("%s: ioctl: TCSETA: %m", op->tty);
+}
+
+/* caps_lock - string contains upper case without lower case */
+/* returns 1 if true, 0 if false */
+static int caps_lock(const char *s)
+{
+ int capslock;
+
+ for (capslock = 0; *s; s++) {
+ if (islower(*s))
+ return (0);
+ if (capslock == 0)
+ capslock = isupper(*s);
+ }
+ return (capslock);
+}
+
+/* bcode - convert speed string to speed code; return 0 on failure */
+static int bcode(const char *s)
+{
+ struct Speedtab *sp;
+ long speed = atol(s);
+
+ for (sp = speedtab; sp->speed; sp++)
+ if (sp->speed == speed)
+ return (sp->code);
+ return (0);
+}
+
+/* error - report errors to console or syslog; only understands %s and %m */
+
+#define str2cpy(b,s1,s2) strcat(strcpy(b,s1),s2)
+
+/*
+ * output error messages
+ */
+static void error(const char *fmt, ...)
+{
+ va_list va_alist;
+ char buf[256], *bp;
+
+#ifndef USE_SYSLOG
+ int fd;
+#endif
+
+#ifdef USE_SYSLOG
+ buf[0] = '\0';
+ bp = buf;
+#else
+ strncpy(buf, applet_name, 256);
+ strncat(buf, ": ", 256);
+ buf[255] = 0;
+ bp = buf + strlen(buf);
+#endif
+
+ va_start(va_alist, fmt);
+ vsnprintf(bp, 256 - strlen(buf), fmt, va_alist);
+ buf[255] = 0;
+ va_end(va_alist);
+
+#ifdef USE_SYSLOG
+ syslog_msg(LOG_AUTH, LOG_ERR, buf);
+#else
+ strncat(bp, "\r\n", 256 - strlen(buf));
+ buf[255] = 0;
+ if ((fd = open("/dev/console", 1)) >= 0) {
+ write(fd, buf, strlen(buf));
+ close(fd);
+ }
+#endif
+ (void) sleep((unsigned) 10); /* be kind to init(8) */
+ exit(1);
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <termios.h>
+#include <unistd.h>
+#include <utmp.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <ctype.h>
+#include <time.h>
+#include "busybox.h"
+
+#include "pwd.h"
+#include "grp.h"
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+#include "shadow.h"
+#endif
+
+#include "tinylogin.h"
+
+// import from utmp.c
+static void checkutmp(int picky);
+static void setutmp(const char *name, const char *line);
+
+// import from encrypt.c
+extern char *pw_encrypt(const char *clear, const char *salt);
+
+
+// login defines
+#define DEFAULT_USER "UNKNOWN"
+#define DEFAULT_PWD "!"
+#define DEFAULT_SHELL "/bin/sh"
+#define TIMEOUT 60
+#define FAIL_DELAY 3
+#define MOTD_FILE "/etc/motd"
+#define NOLOGIN_FILE "/etc/nologin"
+#define SECURETTY_FILE "/etc/securetty"
+
+/* Stuff global to this file */
+struct utmp utent;
+
+
+static int check_nologin ( int amroot );
+
+#if defined CONFIG_FEATURE_SECURETTY
+static int check_tty ( const char *tty );
+
+#else
+static inline int check_tty ( const char *tty ) { return 1; }
+
+#endif
+
+static int is_my_tty ( const char *tty );
+static const char *login_prompt ( void );
+static void motd ( void );
+static void set_env(int argc, char *const *argv);
+
+
+static void alarm_handler ( int sig )
+{
+ error_msg ( "\nLogin timed out after %d seconds.\n", TIMEOUT );
+ exit ( EXIT_SUCCESS );
+}
+
+
+extern int login_main(int argc, char **argv)
+{
+ char tty[BUFSIZ];
+ char full_tty[200];
+ char fromhost[512];
+ char *tmp;
+ int amroot;
+ int flag;
+ int failed;
+ int count=0;
+ struct passwd *pw, pw_copy;
+
+ int opt_preserve = 0;
+ int opt_fflag = 0;
+ char *opt_host = 0;
+ const char *username = 0;
+ int alarmstarted = 0;
+
+ amroot = ( getuid ( ) == 0 );
+ signal ( SIGALRM, alarm_handler );
+
+ if (( argc > 1 ) && ( TIMEOUT > 0 )) {
+ alarm ( TIMEOUT );
+ alarmstarted = 1;
+ }
+
+ while (( flag = getopt(argc, argv, "f:h:p")) != EOF ) {
+ switch ( flag ) {
+ case 'p':
+ printf ( "PRESERVE\n" );
+ opt_preserve = 1;
+ break;
+ case 'f':
+ /*
+ * username must be a seperate token
+ * (-f root, *NOT* -froot). --marekm
+ */
+ if ( optarg != argv[optind-1] )
+ show_usage ( );
+
+ if ( !amroot ) /* Auth bypass only if real UID is zero */
+ error_msg_and_die ( "login: -f permission denied\n" );
+
+ printf ( "USERNAME: %s\n", optarg );
+
+ username = optarg;
+ opt_fflag = 1;
+ break;
+ case 'h':
+ opt_host = optarg;
+ break;
+ default:
+ show_usage ( );
+ }
+ }
+
+ if ( optind < argc ) // got a username
+ username = argv [optind++];
+
+ if ( !isatty ( 0 ) || !isatty ( 1 ) || !isatty ( 2 ))
+ return EXIT_FAILURE; /* Must be a terminal */
+
+ checkutmp ( !amroot );
+
+ tmp = ttyname ( 0 );
+ if ( tmp && ( strncmp ( tmp, "/dev/", 5 ) == 0 ))
+ safe_strncpy ( tty, tmp + 5, sizeof( tty ));
+ else
+ safe_strncpy ( tty, "UNKNOWN", sizeof( tty ));
+
+ if ( amroot )
+ memset ( utent.ut_host, 0, sizeof utent.ut_host );
+
+ if ( opt_host ) {
+ safe_strncpy ( utent.ut_host, opt_host, sizeof( utent. ut_host ));
+
+ snprintf ( fromhost, sizeof( fromhost ) - 1, " on `%.100s' from `%.200s'", tty, opt_host );
+ }
+ else
+ snprintf ( fromhost, sizeof( fromhost ) - 1, " on `%.100s'", tty );
+
+ openlog ( "login", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_AUTH );
+
+ while ( 1 ) {
+ failed = 0;
+
+ if ( !username || !username[0] )
+ username = login_prompt ( );
+
+ if ( !alarmstarted && ( TIMEOUT > 0 )) {
+ alarm ( TIMEOUT );
+ alarmstarted = 1;
+ }
+
+ if (!( pw = getpwnam ( username ))) {
+ pw_copy. pw_name = DEFAULT_USER;
+ pw_copy. pw_passwd = DEFAULT_PWD;
+ pw_copy. pw_shell = DEFAULT_SHELL;
+ opt_fflag = 0;
+ failed = 1;
+ } else
+ pw_copy = *pw;
+
+ pw = &pw_copy;
+
+ if (( pw-> pw_passwd [0] == '!' ) || ( pw-> pw_passwd[0] == '*' ))
+ failed = 1;
+
+ if ( opt_fflag ) {
+ opt_fflag = 0;
+ goto auth_ok;
+ }
+
+ if (( pw-> pw_uid == 0 ) && ( !check_tty ( tty )))
+ failed = 1;
+
+ /* Don't check the password if password entry is empty (!) */
+ if ( !pw-> pw_passwd[0] )
+ goto auth_ok;
+
+ /* authorization takes place here */
+ if ( correct_password ( pw ))
+ goto auth_ok;
+
+ syslog ( LOG_WARNING, "invalid password for `%s'%s\n", pw-> pw_name, fromhost);
+ failed = 1;
+
+auth_ok:
+ if ( !failed)
+ break;
+
+ { // delay next try
+ time_t start, now;
+
+ time ( &start );
+ now = start;
+ while ( difftime ( now, start ) < FAIL_DELAY) {
+ sleep ( FAIL_DELAY );
+ time ( &now );
+ }
+ }
+
+ puts("Login incorrect");
+ if ( ++count == 3 )
+ return EXIT_FAILURE;
+ }
+
+ alarm ( 0 );
+ if ( check_nologin ( pw-> pw_uid == 0 ))
+ return EXIT_FAILURE;
+
+ setutmp ( username, tty );
+ if ( *tty != '/' )
+ snprintf ( full_tty, sizeof( full_tty ) - 1, "/dev/%s", tty);
+ else
+ safe_strncpy ( full_tty, tty, sizeof( full_tty ) - 1 );
+
+ if ( !is_my_tty ( full_tty ))
+ syslog ( LOG_ERR, "unable to determine TTY name, got %s\n", full_tty );
+
+ /* Try these, but don't complain if they fail
+ * (for example when the root fs is read only) */
+ chown ( full_tty, pw-> pw_uid, pw-> pw_gid );
+ chmod ( full_tty, 0600 );
+
+ change_identity ( pw );
+ setup_environment ( pw-> pw_shell, 1, !opt_preserve, pw );
+
+ motd ( );
+ signal ( SIGALRM, SIG_DFL ); /* default alarm signal */
+
+ if ( pw-> pw_uid == 0 )
+ syslog ( LOG_INFO, "root login %s\n", fromhost );
+
+ run_shell ( pw-> pw_shell, 1, 0, 0 ); /* exec the shell finally. */
+
+ return EXIT_FAILURE;
+}
+
+
+
+static const char *login_prompt ( void )
+{
+ char buf [1024];
+ char *sp, *ep;
+
+ gethostname ( buf, sizeof( buf ));
+ printf ( "\nBusyBox on %s login: ", buf );
+ fflush ( stdout );
+
+ if ( !fgets ( buf, sizeof( buf ) - 1, stdin ))
+ return 0;
+
+ if ( !strchr ( buf, '\n' ));
+ return 0;
+
+ for ( sp = buf; isspace ( *sp ); sp++ ) { }
+ for ( ep = sp; isgraph ( *ep ); ep++ ) { }
+
+ *ep = 0;
+ return sp;
+}
+
+
+static int check_nologin ( int amroot )
+{
+ if ( access ( NOLOGIN_FILE, F_OK ) == 0 ) {
+ FILE *fp;
+ int c;
+
+ if (( fp = fopen ( NOLOGIN_FILE, "r" ))) {
+ while (( c = getc ( fp )) != EOF )
+ putchar (( c == '\n' ) ? '\r' : c );
+
+ fflush ( stdout );
+ fclose ( fp );
+ } else {
+ puts ( "\r\nSystem closed for routine maintenance.\r" );
+ }
+ if ( !amroot )
+ return 1;
+
+ puts ( "\r\n[Disconnect bypassed -- root login allowed.]\r" );
+ }
+ return 0;
+}
+
+#ifdef CONFIG_FEATURE_SECURETTY
+
+static int check_tty ( const char *tty )
+{
+ FILE *fp;
+ int i;
+ char buf[BUFSIZ];
+
+ if (( fp = fopen ( SECURETTY_FILE, "r" ))) {
+ while ( fgets ( buf, sizeof( buf ) - 1, fp )) {
+ for ( i = xstrlen( buf ) - 1; i >= 0; --i ) {
+ if ( !isspace ( buf[i] ))
+ break;
+ }
+ buf[++i] = '\0';
+ if (( buf [0] == '\0' ) || ( buf [0] == '#' ))
+ continue;
+
+ if ( strcmp ( buf, tty ) == 0 ) {
+ fclose ( fp );
+ return 1;
+ }
+ }
+ fclose(fp);
+ return 0;
+ }
+ else {
+ syslog ( LOG_WARNING, "cannot open securetty file.\n" );
+ return 1;
+ }
+}
+
+#endif
+
+/* returns 1 if true */
+static int is_my_tty ( const char *tty )
+{
+ struct stat by_name, by_fd;
+
+ if ( stat ( tty, &by_name ) || fstat ( 0, &by_fd ))
+ return 0;
+
+ if ( by_name. st_rdev != by_fd. st_rdev )
+ return 0;
+ else
+ return 1;
+}
+
+
+static void motd ( )
+{
+ FILE *fp;
+ register int c;
+
+ if (( fp = fopen ( MOTD_FILE, "r" ))) {
+ while (( c = getc ( fp )) != EOF )
+ putchar ( c );
+ fclose ( fp );
+ }
+}
+
+
+// vv Taken from tinylogin utmp.c vv
+
+#define _WTMP_FILE "/var/log/wtmp"
+
+#define NO_UTENT \
+ "No utmp entry. You must exec \"login\" from the lowest level \"sh\""
+#define NO_TTY \
+ "Unable to determine your tty name."
+
+/*
+ * checkutmp - see if utmp file is correct for this process
+ *
+ * System V is very picky about the contents of the utmp file
+ * and requires that a slot for the current process exist.
+ * The utmp file is scanned for an entry with the same process
+ * ID. If no entry exists the process exits with a message.
+ *
+ * The "picky" flag is for network and other logins that may
+ * use special flags. It allows the pid checks to be overridden.
+ * This means that getty should never invoke login with any
+ * command line flags.
+ */
+
+static void checkutmp(int picky)
+{
+ char *line;
+ struct utmp *ut;
+ pid_t pid = getpid();
+
+ setutent();
+
+ /* First, try to find a valid utmp entry for this process. */
+ while ((ut = getutent()))
+ if (ut->ut_pid == pid && ut->ut_line[0] && ut->ut_id[0] &&
+ (ut->ut_type == LOGIN_PROCESS || ut->ut_type == USER_PROCESS))
+ break;
+
+ /* If there is one, just use it, otherwise create a new one. */
+ if (ut) {
+ utent = *ut;
+ } else {
+ if (picky) {
+ puts(NO_UTENT);
+ exit(1);
+ }
+ line = ttyname(0);
+ if (!line) {
+ puts(NO_TTY);
+ exit(1);
+ }
+ if (strncmp(line, "/dev/", 5) == 0)
+ line += 5;
+ memset((void *) &utent, 0, sizeof utent);
+ utent.ut_type = LOGIN_PROCESS;
+ utent.ut_pid = pid;
+ strncpy(utent.ut_line, line, sizeof utent.ut_line);
+ /* XXX - assumes /dev/tty?? */
+ strncpy(utent.ut_id, utent.ut_line + 3, sizeof utent.ut_id);
+ strncpy(utent.ut_user, "LOGIN", sizeof utent.ut_user);
+ time(&utent.ut_time);
+ }
+}
+
+#if __GNU_LIBRARY__ < 5
+/*
+ * Some systems already have updwtmp() and possibly updwtmpx(). Others
+ * don't, so we re-implement these functions if necessary. --marekm
+ */
+static void updwtmp(const char *filename, const struct utmp *ut)
+{
+ int fd;
+
+ fd = open(filename, O_APPEND | O_WRONLY, 0);
+ if (fd >= 0) {
+ write(fd, (const char *) ut, sizeof(*ut));
+ close(fd);
+ }
+}
+#endif
+
+/*
+ * setutmp - put a USER_PROCESS entry in the utmp file
+ *
+ * setutmp changes the type of the current utmp entry to
+ * USER_PROCESS. the wtmp file will be updated as well.
+ */
+
+static void setutmp(const char *name, const char *line)
+{
+ utent.ut_type = USER_PROCESS;
+ strncpy(utent.ut_user, name, sizeof utent.ut_user);
+ time(&utent.ut_time);
+ /* other fields already filled in by checkutmp above */
+ setutent();
+ pututline(&utent);
+ endutent();
+ updwtmp(_WTMP_FILE, &utent);
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+
+#include "busybox.h"
+
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <termios.h>
+#include <unistd.h>
+#include <utmp.h>
+#include <sys/resource.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <ctype.h>
+#include <time.h>
+
+#include "pwd.h"
+#include "grp.h"
+
+#include "tinylogin.h"
+
+
+
+/* The shell to run if none is given in the user's passwd entry. */
+#define DEFAULT_SHELL "/bin/sh"
+#define DEFAULT_USER "root"
+
+//#define SYSLOG_SUCCESS
+#define SYSLOG_FAILURE
+
+
+#if defined( SYSLOG_SUCCESS ) || defined( SYSLOG_FAILURE )
+/* Log the fact that someone has run su to the user given by PW;
+ if SUCCESSFUL is nonzero, they gave the correct password, etc. */
+
+static void log_su ( const struct passwd *pw, int successful )
+{
+ const char *old_user, *tty;
+
+#if !defined( SYSLOG_SUCESS )
+ if ( successful )
+ return;
+#endif
+#if !defined( SYSLOG_FAILURE )
+ if ( !successful )
+ return;
+#endif
+
+ if ( pw-> pw_uid ) // not to root -> ignored
+ return;
+
+ /* The utmp entry (via getlogin) is probably the best way to identify
+ the user, especially if someone su's from a su-shell. */
+ old_user = getlogin ( );
+ if ( !old_user ) {
+ /* getlogin can fail -- usually due to lack of utmp entry. Resort to getpwuid. */
+ struct passwd *pwd = getpwuid ( getuid ( ));
+ old_user = ( pwd ? pwd-> pw_name : "" );
+ }
+
+ tty = ttyname ( 2 );
+
+ openlog ( "su", 0, LOG_AUTH );
+ syslog ( LOG_NOTICE, "%s%s on %s", successful ? "" : "FAILED SU ", old_user, tty ? tty : "none" );
+}
+#endif
+
+
+
+int su_main ( int argc, char **argv )
+{
+ int flag;
+ int opt_preserve = 0;
+ int opt_loginshell = 0;
+ char *opt_shell = 0;
+ char *opt_command = 0;
+ char *opt_username = DEFAULT_USER;
+ char **opt_args = 0;
+ struct passwd *pw, pw_copy;
+
+
+ while (( flag = getopt ( argc, argv, "c:lmps:" )) != -1 ) {
+ switch ( flag ) {
+ case 'c':
+ opt_command = optarg;
+ break;
+ case 'm':
+ case 'p':
+ opt_preserve = 1;
+ break;
+ case 's':
+ opt_shell = optarg;
+ break;
+ case 'l':
+ opt_loginshell = 1;
+ break;
+ default:
+ show_usage ( );
+ break;
+ }
+ }
+
+ if (( optind < argc ) && ( argv [optind][0] == '-' ) && ( argv [optind][1] == 0 )) {
+ opt_loginshell = 1;
+ ++optind;
+ }
+
+ /* get user if specified */
+ if ( optind < argc )
+ opt_username = argv [optind++];
+
+ if ( optind < argc )
+ opt_args = argv + optind;
+
+
+ pw = getpwnam ( opt_username );
+ if ( !pw )
+ error_msg_and_die ( "user %s does not exist", opt_username );
+
+ /* Make sure pw->pw_shell is non-NULL. It may be NULL when NEW_USER
+ is a username that is retrieved via NIS (YP), but that doesn't have
+ a default shell listed. */
+ if ( !pw-> pw_shell || !pw->pw_shell [0] )
+ pw-> pw_shell = (char *) DEFAULT_SHELL;
+
+ /* Make a copy of the password information and point pw at the local
+ copy instead. Otherwise, some systems (e.g. Linux) would clobber
+ the static data through the getlogin call from log_su. */
+ pw_copy = *pw;
+ pw = &pw_copy;
+ pw-> pw_name = xstrdup ( pw-> pw_name );
+ pw-> pw_dir = xstrdup ( pw-> pw_dir );
+ pw-> pw_shell = xstrdup ( pw-> pw_shell );
+
+ if (( getuid ( ) == 0 ) || correct_password ( pw ))
+ log_su ( pw, 1 );
+ else {
+ log_su ( pw, 0 );
+ error_msg_and_die ( "incorrect password" );
+ }
+
+ if ( !opt_shell && opt_preserve )
+ opt_shell = getenv ( "SHELL" );
+
+ if ( opt_shell && getuid ( ) && restricted_shell ( pw-> pw_shell ))
+ {
+ /* The user being su'd to has a nonstandard shell, and so is
+ probably a uucp account or has restricted access. Don't
+ compromise the account by allowing access with a standard
+ shell. */
+ fputs ( "using restricted shell\n", stderr );
+ opt_shell = 0;
+ }
+
+ if ( !opt_shell )
+ opt_shell = xstrdup ( pw-> pw_shell );
+
+ change_identity ( pw );
+ setup_environment ( opt_shell, opt_loginshell, !opt_preserve, pw );
+ run_shell ( opt_shell, opt_loginshell, opt_command, opt_args );
+
+ return EXIT_FAILURE;
+}
--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Julianne F. Haugh nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "busybox.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <syslog.h>
+#include <ctype.h>
+
+#include "pwd.h"
+#include "grp.h"
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+#include "shadow.h"
+#endif
+
+#define DEFAULT_LOGIN_PATH "/bin:/usr/bin"
+#define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin"
+
+
+static void xsetenv ( const char *key, const char *value )
+{
+ if ( setenv ( key, value, 1 ))
+ error_msg_and_die ( "out of memory" );
+}
+
+/* Become the user and group(s) specified by PW. */
+
+void change_identity ( const struct passwd *pw )
+{
+ if ( initgroups ( pw-> pw_name, pw-> pw_gid ) == -1 )
+ perror_msg_and_die ( "cannot set groups" );
+ endgrent ( );
+
+ if ( setgid ( pw-> pw_gid ))
+ perror_msg_and_die ( "cannot set group id" );
+ if ( setuid ( pw->pw_uid ))
+ perror_msg_and_die ( "cannot set user id" );
+}
+
+/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
+ If COMMAND is nonzero, pass it to the shell with the -c option.
+ If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
+ arguments. */
+
+void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args )
+{
+ const char **args;
+ int argno = 1;
+ int additional_args_cnt = 0;
+
+ for ( args = additional_args; args && *args; args++ )
+ additional_args_cnt++;
+
+ if ( additional_args )
+ args = (const char **) xmalloc (sizeof (char *) * ( 4 + additional_args_cnt ));
+ else
+ args = (const char **) xmalloc (sizeof (char *) * 4 );
+
+ args [0] = get_last_path_component ( xstrdup ( shell ));
+
+ if ( loginshell ) {
+ char *args0 = xmalloc ( xstrlen ( args [0] ) + 2 );
+ args0 [0] = '-';
+ strcpy ( args0 + 1, args [0] );
+ args [0] = args0;
+ }
+
+ if ( command ) {
+ args [argno++] = "-c";
+ args [argno++] = command;
+ }
+ if ( additional_args ) {
+ for ( ; *additional_args; ++additional_args )
+ args [argno++] = *additional_args;
+ }
+ args [argno] = 0;
+ execv ( shell, (char **) args );
+ perror_msg_and_die ( "cannot run %s", shell );
+}
+
+/* Return 1 if SHELL is a restricted shell (one not returned by
+ getusershell), else 0, meaning it is a standard shell. */
+
+int restricted_shell ( const char *shell )
+{
+ char *line;
+
+ setusershell ( );
+ while (( line = getusershell ( ))) {
+ if (( *line != '#' ) && ( strcmp ( line, shell ) == 0 ))
+ break;
+ }
+ endusershell ( );
+ return line ? 0 : 1;
+}
+
+/* Update `environ' for the new shell based on PW, with SHELL being
+ the value for the SHELL environment variable. */
+
+void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw )
+{
+ if ( loginshell ) {
+ char *term;
+
+ /* Change the current working directory to be the home directory
+ * of the user. It is a fatal error for this process to be unable
+ * to change to that directory. There is no "default" home
+ * directory.
+ * Some systems default to HOME=/
+ */
+ if ( chdir ( pw-> pw_dir )) {
+ if ( chdir ( "/" )) {
+ syslog ( LOG_WARNING, "unable to cd to %s' for user %s'\n", pw-> pw_dir, pw-> pw_name );
+ error_msg_and_die ( "cannot cd to home directory or /" );
+ }
+ fputs ( "warning: cannot change to home directory\n", stderr );
+ }
+
+ /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
+ Unset all other environment variables. */
+ term = getenv ("TERM");
+ clearenv ( );
+ if ( term )
+ xsetenv ( "TERM", term );
+ xsetenv ( "HOME", pw-> pw_dir );
+ xsetenv ( "SHELL", shell );
+ xsetenv ( "USER", pw-> pw_name );
+ xsetenv ( "LOGNAME", pw-> pw_name );
+ xsetenv ( "PATH", ( pw-> pw_uid ? DEFAULT_LOGIN_PATH : DEFAULT_ROOT_LOGIN_PATH ));
+ }
+ else if ( changeenv ) {
+ /* Set HOME, SHELL, and if not becoming a super-user,
+ USER and LOGNAME. */
+ xsetenv ( "HOME", pw-> pw_dir );
+ xsetenv ( "SHELL", shell );
+ if ( pw-> pw_uid ) {
+ xsetenv ( "USER", pw-> pw_name );
+ xsetenv ( "LOGNAME", pw-> pw_name );
+ }
+ }
+}
+
+/* Ask the user for a password.
+ Return 1 if the user gives the correct password for entry PW,
+ 0 if not. Return 1 without asking for a password if run by UID 0
+ or if PW has an empty password. */
+
+int correct_password ( const struct passwd *pw )
+{
+ char *unencrypted, *encrypted, *correct;
+
+#ifdef CONFIG_FEATURE_SHADOWPASSWDS
+ if (( strcmp ( pw-> pw_passwd, "x" ) == 0 ) || ( strcmp ( pw-> pw_passwd, "*" ) == 0 )) {
+ struct spwd *sp = getspnam ( pw-> pw_name );
+
+ if ( !sp )
+ error_msg_and_die ( "no valid shadow password" );
+
+ correct = sp-> sp_pwdp;
+ }
+ else
+#endif
+ correct = pw-> pw_passwd;
+
+ if ( correct == 0 || correct[0] == '\0' )
+ return 1;
+
+ unencrypted = getpass ( "Password: " );
+ if ( !unencrypted )
+ {
+ fputs ( "getpass: cannot open /dev/tty\n", stderr );
+ return 0;
+ }
+ encrypted = crypt ( unencrypted, correct );
+ memset ( unencrypted, 0, xstrlen ( unencrypted ));
+ return ( strcmp ( encrypted, correct ) == 0 ) ? 1 : 0;
+}
--- /dev/null
+#ifndef BB_LOGINUTILS_SHELL_H
+#define BB_LOGINUTILS_SHELL_H
+
+extern void change_identity ( const struct passwd *pw );
+extern void run_shell ( const char *shell, int loginshell, const char *command, char **additional_args );
+extern int restricted_shell ( const char *shell );
+extern void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw );
+extern int correct_password ( const struct passwd *pw );
+
+#endif
projects / oweals / busybox.git / commitdiff