svn commit: r183950 - in user/netchild/obsolete: . src src/libexec
src/libexec/tftpd src/sbin src/sbin/dump src/sbin/restore
src/usr.sbin src/usr.sbin/ntp
Alexander Leidinger
netchild at FreeBSD.org
Thu Oct 16 10:56:26 UTC 2008
Author: netchild
Date: Thu Oct 16 10:56:25 2008
New Revision: 183950
URL: http://svn.freebsd.org/changeset/base/183950
Log:
Create baseline for some stuff which is or will be obsolete soon for
whatever reason.
Added:
user/netchild/obsolete/
user/netchild/obsolete/README
user/netchild/obsolete/src/
user/netchild/obsolete/src/libexec/
user/netchild/obsolete/src/libexec/tftpd/
user/netchild/obsolete/src/libexec/tftpd/tftpd.c (props changed)
- copied unchanged from r183911, head/libexec/tftpd/tftpd.c
user/netchild/obsolete/src/sbin/
user/netchild/obsolete/src/sbin/dump/
user/netchild/obsolete/src/sbin/dump/dumprmt.c (props changed)
- copied unchanged from r183911, head/sbin/dump/dumprmt.c
user/netchild/obsolete/src/sbin/dump/itime.c (props changed)
- copied unchanged from r183911, head/sbin/dump/itime.c
user/netchild/obsolete/src/sbin/dump/optr.c (props changed)
- copied unchanged from r183911, head/sbin/dump/optr.c
user/netchild/obsolete/src/sbin/dump/tape.c (props changed)
- copied unchanged from r183911, head/sbin/dump/tape.c
user/netchild/obsolete/src/sbin/restore/
user/netchild/obsolete/src/sbin/restore/dirs.c (props changed)
- copied unchanged from r183911, head/sbin/restore/dirs.c
user/netchild/obsolete/src/sbin/restore/symtab.c (props changed)
- copied unchanged from r183911, head/sbin/restore/symtab.c
user/netchild/obsolete/src/sbin/restore/tape.c (props changed)
- copied unchanged from r183911, head/sbin/restore/tape.c
user/netchild/obsolete/src/usr.sbin/
user/netchild/obsolete/src/usr.sbin/ntp/
user/netchild/obsolete/src/usr.sbin/ntp/config.h (props changed)
- copied unchanged from r183911, head/usr.sbin/ntp/config.h
Added: user/netchild/obsolete/README
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/netchild/obsolete/README Thu Oct 16 10:56:25 2008 (r183950)
@@ -0,0 +1 @@
+Some stuff which is or will be obsolete soon for whatever reason.
Copied: user/netchild/obsolete/src/libexec/tftpd/tftpd.c (from r183911, head/libexec/tftpd/tftpd.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ user/netchild/obsolete/src/libexec/tftpd/tftpd.c Thu Oct 16 10:56:25 2008 (r183950, copy of r183911, head/libexec/tftpd/tftpd.c)
@@ -0,0 +1,998 @@
+/*
+ * Copyright (c) 1983, 1993
+ * The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 THE REGENTS 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 THE REGENTS 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.
+ */
+
+#ifndef lint
+static const char copyright[] =
+"@(#) Copyright (c) 1983, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+#if 0
+static char sccsid[] = "@(#)tftpd.c 8.1 (Berkeley) 6/4/93";
+#endif
+static const char rcsid[] =
+ "$FreeBSD$";
+#endif /* not lint */
+
+/*
+ * Trivial file transfer protocol server.
+ *
+ * This version includes many modifications by Jim Guyton
+ * <guyton at rand-unix>.
+ */
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <netinet/in.h>
+#include <arpa/tftp.h>
+#include <arpa/inet.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <libutil.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+
+#include "tftpsubs.h"
+
+#define TIMEOUT 5
+#define MAX_TIMEOUTS 5
+
+int peer;
+int rexmtval = TIMEOUT;
+int max_rexmtval = 2*TIMEOUT;
+
+#define PKTSIZE SEGSIZE+4
+char buf[PKTSIZE];
+char ackbuf[PKTSIZE];
+struct sockaddr_storage from;
+
+void tftp(struct tftphdr *, int);
+static void unmappedaddr(struct sockaddr_in6 *);
+
+/*
+ * Null-terminated directory prefix list for absolute pathname requests and
+ * search list for relative pathname requests.
+ *
+ * MAXDIRS should be at least as large as the number of arguments that
+ * inetd allows (currently 20).
+ */
+#define MAXDIRS 20
+static struct dirlist {
+ const char *name;
+ int len;
+} dirs[MAXDIRS+1];
+static int suppress_naks;
+static int logging;
+static int ipchroot;
+static int create_new = 0;
+static char *newfile_format = "%Y%m%d";
+static int increase_name = 0;
+static mode_t mask = S_IWGRP|S_IWOTH;
+
+static const char *errtomsg(int);
+static void nak(int);
+static void oack(void);
+
+static void timer(int);
+static void justquit(int);
+
+int
+main(int argc, char *argv[])
+{
+ struct tftphdr *tp;
+ socklen_t fromlen, len;
+ int n;
+ int ch, on;
+ struct sockaddr_storage me;
+ char *chroot_dir = NULL;
+ struct passwd *nobody;
+ const char *chuser = "nobody";
+
+ tzset(); /* syslog in localtime */
+
+ openlog("tftpd", LOG_PID | LOG_NDELAY, LOG_FTP);
+ while ((ch = getopt(argc, argv, "cCF:lns:u:U:wW")) != -1) {
+ switch (ch) {
+ case 'c':
+ ipchroot = 1;
+ break;
+ case 'C':
+ ipchroot = 2;
+ break;
+ case 'F':
+ newfile_format = optarg;
+ break;
+ case 'l':
+ logging = 1;
+ break;
+ case 'n':
+ suppress_naks = 1;
+ break;
+ case 's':
+ chroot_dir = optarg;
+ break;
+ case 'u':
+ chuser = optarg;
+ break;
+ case 'U':
+ mask = strtol(optarg, NULL, 0);
+ break;
+ case 'w':
+ create_new = 1;
+ break;
+ case 'W':
+ create_new = 1;
+ increase_name = 1;
+ break;
+ default:
+ syslog(LOG_WARNING, "ignoring unknown option -%c", ch);
+ }
+ }
+ if (optind < argc) {
+ struct dirlist *dirp;
+
+ /* Get list of directory prefixes. Skip relative pathnames. */
+ for (dirp = dirs; optind < argc && dirp < &dirs[MAXDIRS];
+ optind++) {
+ if (argv[optind][0] == '/') {
+ dirp->name = argv[optind];
+ dirp->len = strlen(dirp->name);
+ dirp++;
+ }
+ }
+ }
+ else if (chroot_dir) {
+ dirs->name = "/";
+ dirs->len = 1;
+ }
+ if (ipchroot > 0 && chroot_dir == NULL) {
+ syslog(LOG_ERR, "-c requires -s");
+ exit(1);
+ }
+
+ umask(mask);
+
+ on = 1;
+ if (ioctl(0, FIONBIO, &on) < 0) {
+ syslog(LOG_ERR, "ioctl(FIONBIO): %m");
+ exit(1);
+ }
+ fromlen = sizeof (from);
+ n = recvfrom(0, buf, sizeof (buf), 0,
+ (struct sockaddr *)&from, &fromlen);
+ if (n < 0) {
+ syslog(LOG_ERR, "recvfrom: %m");
+ exit(1);
+ }
+ /*
+ * Now that we have read the message out of the UDP
+ * socket, we fork and exit. Thus, inetd will go back
+ * to listening to the tftp port, and the next request
+ * to come in will start up a new instance of tftpd.
+ *
+ * We do this so that inetd can run tftpd in "wait" mode.
+ * The problem with tftpd running in "nowait" mode is that
+ * inetd may get one or more successful "selects" on the
+ * tftp port before we do our receive, so more than one
+ * instance of tftpd may be started up. Worse, if tftpd
+ * break before doing the above "recvfrom", inetd would
+ * spawn endless instances, clogging the system.
+ */
+ {
+ int i, pid;
+
+ for (i = 1; i < 20; i++) {
+ pid = fork();
+ if (pid < 0) {
+ sleep(i);
+ /*
+ * flush out to most recently sent request.
+ *
+ * This may drop some request, but those
+ * will be resent by the clients when
+ * they timeout. The positive effect of
+ * this flush is to (try to) prevent more
+ * than one tftpd being started up to service
+ * a single request from a single client.
+ */
+ fromlen = sizeof from;
+ i = recvfrom(0, buf, sizeof (buf), 0,
+ (struct sockaddr *)&from, &fromlen);
+ if (i > 0) {
+ n = i;
+ }
+ } else {
+ break;
+ }
+ }
+ if (pid < 0) {
+ syslog(LOG_ERR, "fork: %m");
+ exit(1);
+ } else if (pid != 0) {
+ exit(0);
+ }
+ }
+
+ /*
+ * Since we exit here, we should do that only after the above
+ * recvfrom to keep inetd from constantly forking should there
+ * be a problem. See the above comment about system clogging.
+ */
+ if (chroot_dir) {
+ if (ipchroot > 0) {
+ char *tempchroot;
+ struct stat sb;
+ int statret;
+ struct sockaddr_storage ss;
+ char hbuf[NI_MAXHOST];
+
+ memcpy(&ss, &from, from.ss_len);
+ unmappedaddr((struct sockaddr_in6 *)&ss);
+ getnameinfo((struct sockaddr *)&ss, ss.ss_len,
+ hbuf, sizeof(hbuf), NULL, 0,
+ NI_NUMERICHOST);
+ asprintf(&tempchroot, "%s/%s", chroot_dir, hbuf);
+ if (ipchroot == 2)
+ statret = stat(tempchroot, &sb);
+ if (ipchroot == 1 ||
+ (statret == 0 && (sb.st_mode & S_IFDIR)))
+ chroot_dir = tempchroot;
+ }
+ /* Must get this before chroot because /etc might go away */
+ if ((nobody = getpwnam(chuser)) == NULL) {
+ syslog(LOG_ERR, "%s: no such user", chuser);
+ exit(1);
+ }
+ if (chroot(chroot_dir)) {
+ syslog(LOG_ERR, "chroot: %s: %m", chroot_dir);
+ exit(1);
+ }
+ chdir("/");
+ setgroups(1, &nobody->pw_gid);
+ setuid(nobody->pw_uid);
+ }
+
+ len = sizeof(me);
+ if (getsockname(0, (struct sockaddr *)&me, &len) == 0) {
+ switch (me.ss_family) {
+ case AF_INET:
+ ((struct sockaddr_in *)&me)->sin_port = 0;
+ break;
+ case AF_INET6:
+ ((struct sockaddr_in6 *)&me)->sin6_port = 0;
+ break;
+ default:
+ /* unsupported */
+ break;
+ }
+ } else {
+ memset(&me, 0, sizeof(me));
+ me.ss_family = from.ss_family;
+ me.ss_len = from.ss_len;
+ }
+ alarm(0);
+ close(0);
+ close(1);
+ peer = socket(from.ss_family, SOCK_DGRAM, 0);
+ if (peer < 0) {
+ syslog(LOG_ERR, "socket: %m");
+ exit(1);
+ }
+ if (bind(peer, (struct sockaddr *)&me, me.ss_len) < 0) {
+ syslog(LOG_ERR, "bind: %m");
+ exit(1);
+ }
+ if (connect(peer, (struct sockaddr *)&from, from.ss_len) < 0) {
+ syslog(LOG_ERR, "connect: %m");
+ exit(1);
+ }
+ tp = (struct tftphdr *)buf;
+ tp->th_opcode = ntohs(tp->th_opcode);
+ if (tp->th_opcode == RRQ || tp->th_opcode == WRQ)
+ tftp(tp, n);
+ exit(1);
+}
+
+static void
+reduce_path(char *fn)
+{
+ char *slash, *ptr;
+
+ /* Reduce all "/+./" to "/" (just in case we've got "/./../" later */
+ while ((slash = strstr(fn, "/./")) != NULL) {
+ for (ptr = slash; ptr > fn && ptr[-1] == '/'; ptr--)
+ ;
+ slash += 2;
+ while (*slash)
+ *++ptr = *++slash;
+ }
+
+ /* Now reduce all "/something/+../" to "/" */
+ while ((slash = strstr(fn, "/../")) != NULL) {
+ if (slash == fn)
+ break;
+ for (ptr = slash; ptr > fn && ptr[-1] == '/'; ptr--)
+ ;
+ for (ptr--; ptr >= fn; ptr--)
+ if (*ptr == '/')
+ break;
+ if (ptr < fn)
+ break;
+ slash += 3;
+ while (*slash)
+ *++ptr = *++slash;
+ }
+}
+
+struct formats;
+int validate_access(char **, int);
+void xmitfile(struct formats *);
+void recvfile(struct formats *);
+
+struct formats {
+ const char *f_mode;
+ int (*f_validate)(char **, int);
+ void (*f_send)(struct formats *);
+ void (*f_recv)(struct formats *);
+ int f_convert;
+} formats[] = {
+ { "netascii", validate_access, xmitfile, recvfile, 1 },
+ { "octet", validate_access, xmitfile, recvfile, 0 },
+#ifdef notdef
+ { "mail", validate_user, sendmail, recvmail, 1 },
+#endif
+ { 0, NULL, NULL, NULL, 0 }
+};
+
+struct options {
+ const char *o_type;
+ char *o_request;
+ int o_reply; /* turn into union if need be */
+} options[] = {
+ { "tsize", NULL, 0 }, /* OPT_TSIZE */
+ { "timeout", NULL, 0 }, /* OPT_TIMEOUT */
+ { NULL, NULL, 0 }
+};
+
+enum opt_enum {
+ OPT_TSIZE = 0,
+ OPT_TIMEOUT,
+};
+
+/*
+ * Handle initial connection protocol.
+ */
+void
+tftp(struct tftphdr *tp, int size)
+{
+ char *cp;
+ int i, first = 1, has_options = 0, ecode;
+ struct formats *pf;
+ char *filename, *mode, *option, *ccp;
+ char fnbuf[PATH_MAX];
+
+ cp = tp->th_stuff;
+again:
+ while (cp < buf + size) {
+ if (*cp == '\0')
+ break;
+ cp++;
+ }
+ if (*cp != '\0') {
+ nak(EBADOP);
+ exit(1);
+ }
+ i = cp - tp->th_stuff;
+ if (i >= sizeof(fnbuf)) {
+ nak(EBADOP);
+ exit(1);
+ }
+ memcpy(fnbuf, tp->th_stuff, i);
+ fnbuf[i] = '\0';
+ reduce_path(fnbuf);
+ filename = fnbuf;
+ if (first) {
+ mode = ++cp;
+ first = 0;
+ goto again;
+ }
+ for (cp = mode; *cp; cp++)
+ if (isupper(*cp))
+ *cp = tolower(*cp);
+ for (pf = formats; pf->f_mode; pf++)
+ if (strcmp(pf->f_mode, mode) == 0)
+ break;
+ if (pf->f_mode == 0) {
+ nak(EBADOP);
+ exit(1);
+ }
+ while (++cp < buf + size) {
+ for (i = 2, ccp = cp; i > 0; ccp++) {
+ if (ccp >= buf + size) {
+ /*
+ * Don't reject the request, just stop trying
+ * to parse the option and get on with it.
+ * Some Apple Open Firmware versions have
+ * trailing garbage on the end of otherwise
+ * valid requests.
+ */
+ goto option_fail;
+ } else if (*ccp == '\0')
+ i--;
+ }
+ for (option = cp; *cp; cp++)
+ if (isupper(*cp))
+ *cp = tolower(*cp);
+ for (i = 0; options[i].o_type != NULL; i++)
+ if (strcmp(option, options[i].o_type) == 0) {
+ options[i].o_request = ++cp;
+ has_options = 1;
+ }
+ cp = ccp-1;
+ }
+
+option_fail:
+ if (options[OPT_TIMEOUT].o_request) {
+ int to = atoi(options[OPT_TIMEOUT].o_request);
+ if (to < 1 || to > 255) {
+ nak(EBADOP);
+ exit(1);
+ }
+ else if (to <= max_rexmtval)
+ options[OPT_TIMEOUT].o_reply = rexmtval = to;
+ else
+ options[OPT_TIMEOUT].o_request = NULL;
+ }
+
+ ecode = (*pf->f_validate)(&filename, tp->th_opcode);
+ if (has_options && ecode == 0)
+ oack();
+ if (logging) {
+ char hbuf[NI_MAXHOST];
+
+ getnameinfo((struct sockaddr *)&from, from.ss_len,
+ hbuf, sizeof(hbuf), NULL, 0, 0);
+ syslog(LOG_INFO, "%s: %s request for %s: %s", hbuf,
+ tp->th_opcode == WRQ ? "write" : "read",
+ filename, errtomsg(ecode));
+ }
+ if (ecode) {
+ /*
+ * Avoid storms of naks to a RRQ broadcast for a relative
+ * bootfile pathname from a diskless Sun.
+ */
+ if (suppress_naks && *filename != '/' && ecode == ENOTFOUND)
+ exit(0);
+ nak(ecode);
+ exit(1);
+ }
+ if (tp->th_opcode == WRQ)
+ (*pf->f_recv)(pf);
+ else
+ (*pf->f_send)(pf);
+ exit(0);
+}
+
+
+FILE *file;
+
+/*
+ * Find the next value for YYYYMMDD.nn when the file to be written should
+ * be unique. Due to the limitations of nn, we will fail if nn reaches 100.
+ * Besides, that is four updates per hour on a file, which is kind of
+ * execessive anyway.
+ */
+static int
+find_next_name(char *filename, int *fd)
+{
+ int i;
+ time_t tval;
+ size_t len;
+ struct tm lt;
+ char yyyymmdd[MAXPATHLEN];
+ char newname[MAXPATHLEN];
+ struct stat sb;
+ int ret;
+
+ /* Create the YYYYMMDD part of the filename */
+ time(&tval);
+ lt = *localtime(&tval);
+ len = strftime(yyyymmdd, sizeof(yyyymmdd), newfile_format, <);
+ if (len == 0) {
+ syslog(LOG_WARNING,
+ "Filename suffix too long (%d characters maximum)",
+ MAXPATHLEN);
+ return (EACCESS);
+ }
+
+ /* Make sure the new filename is not too long */
+ if (strlen(filename) > MAXPATHLEN - len - 5) {
+ syslog(LOG_WARNING,
+ "Filename too long (%d characters, %d maximum)",
+ strlen(filename), MAXPATHLEN - len - 5);
+ return (EACCESS);
+ }
+
+ /* Find the first file which doesn't exist */
+ for (i = 0; i < 100; i++) {
+ sprintf(newname, "%s.%s.%02d", filename, yyyymmdd, i);
+ *fd = open(newname,
+ O_WRONLY | O_CREAT | O_EXCL,
+ S_IRUSR | S_IWUSR | S_IRGRP |
+ S_IWGRP | S_IROTH | S_IWOTH);
+ if (*fd > 0)
+ return 0;
+ }
+
+ return (EEXIST);
+}
+
+/*
+ * Validate file access. Since we
+ * have no uid or gid, for now require
+ * file to exist and be publicly
+ * readable/writable.
+ * If we were invoked with arguments
+ * from inetd then the file must also be
+ * in one of the given directory prefixes.
+ * Note also, full path name must be
+ * given as we have no login directory.
+ */
+int
+validate_access(char **filep, int mode)
+{
+ struct stat stbuf;
+ int fd;
+ int error;
+ struct dirlist *dirp;
+ static char pathname[MAXPATHLEN];
+ char *filename = *filep;
+
+ /*
+ * Prevent tricksters from getting around the directory restrictions
+ */
+ if (strstr(filename, "/../"))
+ return (EACCESS);
+
+ if (*filename == '/') {
+ /*
+ * Allow the request if it's in one of the approved locations.
+ * Special case: check the null prefix ("/") by looking
+ * for length = 1 and relying on the arg. processing that
+ * it's a /.
+ */
+ for (dirp = dirs; dirp->name != NULL; dirp++) {
+ if (dirp->len == 1 ||
+ (!strncmp(filename, dirp->name, dirp->len) &&
+ filename[dirp->len] == '/'))
+ break;
+ }
+ /* If directory list is empty, allow access to any file */
+ if (dirp->name == NULL && dirp != dirs)
+ return (EACCESS);
+ if (stat(filename, &stbuf) < 0)
+ return (errno == ENOENT ? ENOTFOUND : EACCESS);
+ if ((stbuf.st_mode & S_IFMT) != S_IFREG)
+ return (ENOTFOUND);
+ if (mode == RRQ) {
+ if ((stbuf.st_mode & S_IROTH) == 0)
+ return (EACCESS);
+ } else {
+ if ((stbuf.st_mode & S_IWOTH) == 0)
+ return (EACCESS);
+ }
+ } else {
+ int err;
+
+ /*
+ * Relative file name: search the approved locations for it.
+ * Don't allow write requests that avoid directory
+ * restrictions.
+ */
+
+ if (!strncmp(filename, "../", 3))
+ return (EACCESS);
+
+ /*
+ * If the file exists in one of the directories and isn't
+ * readable, continue looking. However, change the error code
+ * to give an indication that the file exists.
+ */
+ err = ENOTFOUND;
+ for (dirp = dirs; dirp->name != NULL; dirp++) {
+ snprintf(pathname, sizeof(pathname), "%s/%s",
+ dirp->name, filename);
+ if (stat(pathname, &stbuf) == 0 &&
+ (stbuf.st_mode & S_IFMT) == S_IFREG) {
+ if ((stbuf.st_mode & S_IROTH) != 0) {
+ break;
+ }
+ err = EACCESS;
+ }
+ }
+ if (dirp->name != NULL)
+ *filep = filename = pathname;
+ else if (mode == RRQ)
+ return (err);
+ }
+ if (options[OPT_TSIZE].o_request) {
+ if (mode == RRQ)
+ options[OPT_TSIZE].o_reply = stbuf.st_size;
+ else
+ /* XXX Allows writes of all sizes. */
+ options[OPT_TSIZE].o_reply =
+ atoi(options[OPT_TSIZE].o_request);
+ }
+ if (mode == RRQ)
+ fd = open(filename, O_RDONLY);
+ else {
+ if (create_new) {
+ if (increase_name) {
+ error = find_next_name(filename, &fd);
+ if (error > 0)
+ return (error + 100);
+ } else
+ fd = open(filename,
+ O_WRONLY | O_TRUNC | O_CREAT,
+ S_IRUSR | S_IWUSR | S_IRGRP |
+ S_IWGRP | S_IROTH | S_IWOTH );
+ } else
+ fd = open(filename, O_WRONLY | O_TRUNC);
+ }
+ if (fd < 0)
+ return (errno + 100);
+ file = fdopen(fd, (mode == RRQ)? "r":"w");
+ if (file == NULL) {
+ close(fd);
+ return (errno + 100);
+ }
+ return (0);
+}
+
+int timeouts;
+jmp_buf timeoutbuf;
+
+void
+timer(int sig __unused)
+{
+ if (++timeouts > MAX_TIMEOUTS)
+ exit(1);
+ longjmp(timeoutbuf, 1);
+}
+
+/*
+ * Send the requested file.
+ */
+void
+xmitfile(struct formats *pf)
+{
+ struct tftphdr *dp;
+ struct tftphdr *ap; /* ack packet */
+ int size, n;
+ volatile unsigned short block;
+
+ signal(SIGALRM, timer);
+ dp = r_init();
+ ap = (struct tftphdr *)ackbuf;
+ block = 1;
+ do {
+ size = readit(file, &dp, pf->f_convert);
+ if (size < 0) {
+ nak(errno + 100);
+ goto abort;
+ }
+ dp->th_opcode = htons((u_short)DATA);
+ dp->th_block = htons((u_short)block);
+ timeouts = 0;
+ (void)setjmp(timeoutbuf);
+
+send_data:
+ {
+ int i, t = 1;
+ for (i = 0; ; i++){
+ if (send(peer, dp, size + 4, 0) != size + 4) {
+ sleep(t);
+ t = (t < 32) ? t<< 1 : t;
+ if (i >= 12) {
+ syslog(LOG_ERR, "write: %m");
+ goto abort;
+ }
+ }
+ break;
+ }
+ }
+ read_ahead(file, pf->f_convert);
+ for ( ; ; ) {
+ alarm(rexmtval); /* read the ack */
+ n = recv(peer, ackbuf, sizeof (ackbuf), 0);
+ alarm(0);
+ if (n < 0) {
+ syslog(LOG_ERR, "read: %m");
+ goto abort;
+ }
+ ap->th_opcode = ntohs((u_short)ap->th_opcode);
+ ap->th_block = ntohs((u_short)ap->th_block);
+
+ if (ap->th_opcode == ERROR)
+ goto abort;
+
+ if (ap->th_opcode == ACK) {
+ if (ap->th_block == block)
+ break;
+ /* Re-synchronize with the other side */
+ (void) synchnet(peer);
+ if (ap->th_block == (block -1))
+ goto send_data;
+ }
+
+ }
+ block++;
+ } while (size == SEGSIZE);
+abort:
+ (void) fclose(file);
+}
+
+void
+justquit(int sig __unused)
+{
+ exit(0);
+}
+
+
+/*
+ * Receive a file.
+ */
+void
+recvfile(struct formats *pf)
+{
+ struct tftphdr *dp;
+ struct tftphdr *ap; /* ack buffer */
+ int n, size;
+ volatile unsigned short block;
+
+ signal(SIGALRM, timer);
+ dp = w_init();
+ ap = (struct tftphdr *)ackbuf;
+ block = 0;
+ do {
+ timeouts = 0;
+ ap->th_opcode = htons((u_short)ACK);
+ ap->th_block = htons((u_short)block);
+ block++;
+ (void) setjmp(timeoutbuf);
+send_ack:
+ if (send(peer, ackbuf, 4, 0) != 4) {
+ syslog(LOG_ERR, "write: %m");
+ goto abort;
+ }
+ write_behind(file, pf->f_convert);
+ for ( ; ; ) {
+ alarm(rexmtval);
+ n = recv(peer, dp, PKTSIZE, 0);
+ alarm(0);
+ if (n < 0) { /* really? */
+ syslog(LOG_ERR, "read: %m");
+ goto abort;
+ }
+ dp->th_opcode = ntohs((u_short)dp->th_opcode);
+ dp->th_block = ntohs((u_short)dp->th_block);
+ if (dp->th_opcode == ERROR)
+ goto abort;
+ if (dp->th_opcode == DATA) {
+ if (dp->th_block == block) {
+ break; /* normal */
+ }
+ /* Re-synchronize with the other side */
+ (void) synchnet(peer);
+ if (dp->th_block == (block-1))
+ goto send_ack; /* rexmit */
+ }
+ }
+ /* size = write(file, dp->th_data, n - 4); */
+ size = writeit(file, &dp, n - 4, pf->f_convert);
+ if (size != (n-4)) { /* ahem */
+ if (size < 0) nak(errno + 100);
+ else nak(ENOSPACE);
+ goto abort;
+ }
+ } while (size == SEGSIZE);
+ write_behind(file, pf->f_convert);
+ (void) fclose(file); /* close data file */
+
+ ap->th_opcode = htons((u_short)ACK); /* send the "final" ack */
+ ap->th_block = htons((u_short)(block));
+ (void) send(peer, ackbuf, 4, 0);
+
+ signal(SIGALRM, justquit); /* just quit on timeout */
+ alarm(rexmtval);
+ n = recv(peer, buf, sizeof (buf), 0); /* normally times out and quits */
+ alarm(0);
+ if (n >= 4 && /* if read some data */
+ dp->th_opcode == DATA && /* and got a data block */
+ block == dp->th_block) { /* then my last ack was lost */
+ (void) send(peer, ackbuf, 4, 0); /* resend final ack */
+ }
+abort:
+ return;
+}
+
+struct errmsg {
+ int e_code;
+ const char *e_msg;
+} errmsgs[] = {
+ { EUNDEF, "Undefined error code" },
+ { ENOTFOUND, "File not found" },
+ { EACCESS, "Access violation" },
+ { ENOSPACE, "Disk full or allocation exceeded" },
+ { EBADOP, "Illegal TFTP operation" },
+ { EBADID, "Unknown transfer ID" },
+ { EEXISTS, "File already exists" },
+ { ENOUSER, "No such user" },
+ { EOPTNEG, "Option negotiation" },
+ { -1, 0 }
+};
+
+static const char *
+errtomsg(int error)
+{
+ static char ebuf[20];
+ struct errmsg *pe;
+ if (error == 0)
+ return "success";
+ for (pe = errmsgs; pe->e_code >= 0; pe++)
+ if (pe->e_code == error)
+ return pe->e_msg;
+ snprintf(ebuf, sizeof(buf), "error %d", error);
+ return ebuf;
+}
+
+/*
+ * Send a nak packet (error message).
+ * Error code passed in is one of the
+ * standard TFTP codes, or a UNIX errno
+ * offset by 100.
+ */
+static void
+nak(int error)
+{
+ struct tftphdr *tp;
+ int length;
+ struct errmsg *pe;
+
+ tp = (struct tftphdr *)buf;
+ tp->th_opcode = htons((u_short)ERROR);
+ tp->th_code = htons((u_short)error);
+ for (pe = errmsgs; pe->e_code >= 0; pe++)
+ if (pe->e_code == error)
+ break;
+ if (pe->e_code < 0) {
+ pe->e_msg = strerror(error - 100);
+ tp->th_code = EUNDEF; /* set 'undef' errorcode */
+ }
+ strcpy(tp->th_msg, pe->e_msg);
+ length = strlen(pe->e_msg);
+ tp->th_msg[length] = '\0';
+ length += 5;
+ if (send(peer, buf, length, 0) != length)
+ syslog(LOG_ERR, "nak: %m");
+}
+
+/* translate IPv4 mapped IPv6 address to IPv4 address */
+static void
+unmappedaddr(struct sockaddr_in6 *sin6)
+{
+ struct sockaddr_in *sin4;
+ u_int32_t addr;
+ int port;
+
+ if (sin6->sin6_family != AF_INET6 ||
+ !IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
+ return;
+ sin4 = (struct sockaddr_in *)sin6;
+ addr = *(u_int32_t *)&sin6->sin6_addr.s6_addr[12];
+ port = sin6->sin6_port;
+ memset(sin4, 0, sizeof(struct sockaddr_in));
+ sin4->sin_addr.s_addr = addr;
+ sin4->sin_port = port;
+ sin4->sin_family = AF_INET;
+ sin4->sin_len = sizeof(struct sockaddr_in);
+}
+
+/*
+ * Send an oack packet (option acknowledgement).
+ */
+static void
+oack(void)
+{
+ struct tftphdr *tp, *ap;
+ int size, i, n;
+ char *bp;
+
+ tp = (struct tftphdr *)buf;
+ bp = buf + 2;
+ size = sizeof(buf) - 2;
+ tp->th_opcode = htons((u_short)OACK);
+ for (i = 0; options[i].o_type != NULL; i++) {
+ if (options[i].o_request) {
+ n = snprintf(bp, size, "%s%c%d", options[i].o_type,
+ 0, options[i].o_reply);
+ bp += n+1;
+ size -= n+1;
+ if (size < 0) {
+ syslog(LOG_ERR, "oack: buffer overflow");
+ exit(1);
+ }
+ }
+ }
+ size = bp - buf;
+ ap = (struct tftphdr *)ackbuf;
+ signal(SIGALRM, timer);
+ timeouts = 0;
+
+ (void)setjmp(timeoutbuf);
+ if (send(peer, buf, size, 0) != size) {
+ syslog(LOG_INFO, "oack: %m");
+ exit(1);
+ }
+
+ for (;;) {
+ alarm(rexmtval);
+ n = recv(peer, ackbuf, sizeof (ackbuf), 0);
+ alarm(0);
+ if (n < 0) {
+ syslog(LOG_ERR, "recv: %m");
+ exit(1);
+ }
+ ap->th_opcode = ntohs((u_short)ap->th_opcode);
+ ap->th_block = ntohs((u_short)ap->th_block);
+ if (ap->th_opcode == ERROR)
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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