--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * adduser - add users to /etc/passwd and /etc/shadow
+ *
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by John Beppu <beppu@lineo.com>
+ *
+ * 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 <shadow.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include "busybox.h"
+#include "pwd_grp/pwd.h"
+#include "pwd_grp/grp.h"
+
+#define PASSWD_FILE "/etc/passwd"
+#define SHADOW_FILE "/etc/gshadow"
+
+#if 0
+# define PASSWD_FILE "passwd"
+# define SHADOW_FILE "shadow"
+#endif
+
+/* structs __________________________ */
+
+typedef struct {
+ uid_t u;
+ gid_t g;
+} Id;
+
+/* data _____________________________ */
+
+/* defaults : should this be in an external file? */
+static char *default_passwd = "x";
+static char *default_gecos = "Embedix User,,,";
+static char *default_home_prefix = "/home";
+static char *default_shell = "/bin/sh";
+
+/* shadow in use? */
+static int shadow_enabled = 0;
+
+/* I was doing this all over the place */
+static FILE *fopen_wrapper(const char *filename, const char *mode)
+{
+ FILE *f;
+
+ f = fopen(filename, mode);
+ if (f == NULL) {
+ fprintf(stderr, "adduser: %s: %s\n", filename, strerror(errno));
+ }
+ return f;
+}
+
+/* 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 = fopen_wrapper(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 = 4;
+ char *argv[] = { "addgroup", "-g", NULL, NULL };
+ char group_id[8];
+ char group_name[32];
+
+ strncpy(group_name, login, 32);
+ argv[3] = group_name;
+ sprintf(group_id, "%d", gid);
+ argv[2] = group_id;
+ addgroup_main(argc, argv);
+}
+
+static void passwd_wrapper(const char *login)
+{
+ char *prog = "passwd";
+ execlp(prog, prog, login, NULL);
+ error_msg_and_die("Failed to execute 'passwd', you must set the password for '%s' manually\n", login);
+}
+
+/*
+ * 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;
+}
+
+/* putpwent(3) remix */
+static int adduser(const char *filename, struct passwd *p)
+{
+ FILE *passwd;
+ int r;
+ FILE *shadow;
+ struct spwd *sp;
+
+ /* make sure everything is kosher and setup uid && gid */
+ passwd = fopen_wrapper(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\n", p->pw_name);
+ else if (r == 2)
+ error_msg("illegal uid or no uids left\n");
+ else if (r == 3)
+ error_msg("group name %s already in use\n", p->pw_name);
+ else
+ error_msg("generic error.\n");
+ /* return -1; */
+ return 1;
+ }
+
+ /* add to passwd */
+ if (putpwent(p, passwd) == -1) {
+ /* return -1; */
+ return 1;
+ }
+ fclose(passwd);
+
+ /* add to shadow if necessary */
+ if (shadow_enabled) {
+ shadow = fopen_wrapper(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);
+ }
+
+ /* 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 uid_t i_am_not_root()
+{
+ 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;
+ char opt;
+ char *login;
+ char *gecos;
+ char *home = NULL;
+ char *shell;
+ char path[MAXPATHLEN];
+
+ struct passwd pw;
+
+ /* init */
+ if (argc < 2) {
+ show_usage();
+ }
+ gecos = default_gecos;
+ shell = default_shell;
+
+ /* get args */
+ for (i = 1; i < argc; i++) {
+ if (argv[i][0] == '-') {
+ opt = argv[i][1];
+ switch (opt) {
+ case 'h':
+ home = argv[++i];
+ break;
+ case 'g':
+ gecos = argv[++i];
+ break;
+ case 's':
+ shell = argv[++i];
+ break;
+ default:
+ error_msg("invalid option -- %c\n", opt);
+ break;
+ }
+ } else {
+ break;
+ }
+ }
+
+ /* got root? */
+ if (i_am_not_root()) {
+ error_msg_and_die( "Only root may add a user or group to the system.\n");
+ }
+
+ /* get login */
+ if (i >= argc) {
+ error_msg_and_die( "adduser: no user specified\n");
+ }
+ login = argv[i];
+
+ /* create string for $HOME if not specified already */
+ if (!home) {
+ snprintf(path, MAXPATHLEN, "%s/%s", default_home_prefix, login);
+ path[MAXPATHLEN - 1] = 0;
+ home = path;
+ }
+ /* is /etc/shadow in use? */
+ shadow_enabled = (0 == access(SHADOW_FILE, F_OK));
+
+ /* create a passwd struct */
+ pw.pw_name = login;
+ pw.pw_passwd = default_passwd;
+ pw.pw_uid = 0;
+ pw.pw_gid = 0;
+ pw.pw_gecos = gecos;
+ pw.pw_dir = home;
+ pw.pw_shell = shell;
+
+ /* grand finale */
+ i = adduser(PASSWD_FILE, &pw);
+
+ return (i);
+}
+
+/* $Id: adduser.c,v 1.1 2001/08/21 16:18:59 andersen 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},
+};
+
+void parse_args(int argc, char **argv, struct options *op);
+void parse_speeds(struct options *op, char *arg);
+void update_utmp(char *line);
+void open_tty(char *tty, struct termio *tp, int local);
+void termio_init(struct termio *tp, int speed, struct options *op);
+void auto_baud(struct termio *tp);
+void do_prompt(struct options *op, struct termio *tp);
+void next_speed(struct termio *tp, struct options *op);
+char *get_logname(struct options *op, struct chardata *cp,
+
+ struct termio *tp);
+void termio_final(struct options *op, struct termio *tp,
+
+ struct chardata *cp);
+int caps_lock(char *s);
+int bcode(char *s);
+static void error(const char *fmt, ...);
+
+/* The following is used for understandable diagnostics. */
+
+char *progname;
+
+/* Fake hostname for ut_host specified on command line. */
+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 */
+ };
+
+ /* The BSD-style init command passes us a useless process name. */
+
+#ifdef SYSV_STYLE
+ progname = argv[0];
+#else
+ progname = "getty";
+#endif
+
+#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 */
+
+void parse_args(argc, argv, op)
+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 = malloc(strlen(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 */
+
+void parse_speeds(op, arg)
+struct options *op;
+char *arg;
+{
+ char *strtok();
+ 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 */
+void update_utmp(line)
+char *line;
+{
+ struct utmp ut;
+ time_t t;
+ int mypid = getpid();
+ long time();
+ long lseek();
+ struct utmp *utp;
+
+#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.
+ */
+
+#ifdef __linux__
+ 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);
+ }
+#else /* not __linux__ */
+ {
+ int ut_fd;
+
+ if ((ut_fd = open(UTMP_FILE, 2)) < 0) {
+ error("%s: open for update: %m"), UTMP_FILE;
+ } else {
+ long ut_size = sizeof(ut); /* avoid nonsense */
+
+ while (read(ut_fd, (char *) &ut, sizeof(ut)) == sizeof(ut)) {
+ if (ut.ut_type == INIT_PROCESS && ut.ut_pid == mypid) {
+ ut.ut_type = LOGIN_PROCESS;
+ ut.ut_time = time((long *) 0);
+ (void) strncpy(ut.ut_name, "LOGIN", sizeof(ut.ut_name));
+ (void) strncpy(ut.ut_line, line, sizeof(ut.ut_line));
+ if (fakehost)
+ (void) strncpy(ut.ut_host, fakehost, sizeof(ut.ut_host));
+ (void) lseek(ut_fd, -ut_size, 1);
+ (void) write(ut_fd, (char *) &ut, sizeof(ut));
+ (void) close(ut_fd);
+ return;
+ }
+ }
+ error("%s: no utmp entry", line);
+ }
+ }
+#endif /* __linux__ */
+}
+
+#endif
+
+/* open_tty - set up tty as standard { input, output, error } */
+void open_tty(tty, tp, local)
+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 = malloc(strlen(tty))))
+ error("Can't malloc for vcs");
+ if (!(vcsa = malloc(strlen(tty) + 1)))
+ 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 */
+
+char gbuf[1024];
+char area[1024];
+
+void termio_init(tp, speed, op)
+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 */
+void auto_baud(tp)
+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 */
+void do_prompt(op, tp)
+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 */
+void next_speed(tp, op)
+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 */
+char *get_logname(op, cp, tp)
+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 */
+void termio_final(op, tp, cp)
+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 */
+int caps_lock(s)
+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 */
+int bcode(s)
+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, progname, 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
+ openlog(progname, LOG_PID, LOG_AUTH);
+ syslog(LOG_ERR, buf);
+ closelog();
+#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);
+}
projects / oweals / busybox.git / commitdiff