diff options
author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/tftp | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/tftp')
-rw-r--r-- | usr.bin/tftp/Makefile | 6 | ||||
-rw-r--r-- | usr.bin/tftp/extern.h | 37 | ||||
-rw-r--r-- | usr.bin/tftp/main.c | 733 | ||||
-rw-r--r-- | usr.bin/tftp/tftp.1 | 173 | ||||
-rw-r--r-- | usr.bin/tftp/tftp.c | 453 | ||||
-rw-r--r-- | usr.bin/tftp/tftpsubs.c | 273 | ||||
-rw-r--r-- | usr.bin/tftp/tftpsubs.h | 48 |
7 files changed, 1723 insertions, 0 deletions
diff --git a/usr.bin/tftp/Makefile b/usr.bin/tftp/Makefile new file mode 100644 index 0000000..d91ba61 --- /dev/null +++ b/usr.bin/tftp/Makefile @@ -0,0 +1,6 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= tftp +SRCS= main.c tftp.c tftpsubs.c + +.include <bsd.prog.mk> diff --git a/usr.bin/tftp/extern.h b/usr.bin/tftp/extern.h new file mode 100644 index 0000000..9174cb1 --- /dev/null +++ b/usr.bin/tftp/extern.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 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. + * + * @(#)extern.h 8.1 (Berkeley) 6/6/93 + */ + +void recvfile __P((int, char *, char *)); +void sendfile __P((int, char *, char *)); diff --git a/usr.bin/tftp/main.c b/usr.bin/tftp/main.c new file mode 100644 index 0000000..f99e7f6 --- /dev/null +++ b/usr.bin/tftp/main.c @@ -0,0 +1,733 @@ +/* + * 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 char copyright[] = +"@(#) Copyright (c) 1983, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */ + +/* + * TFTP User Program -- Command Interface. + */ +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/file.h> + +#include <netinet/in.h> + +#include <arpa/inet.h> + +#include <ctype.h> +#include <errno.h> +#include <netdb.h> +#include <setjmp.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "extern.h" + +#define TIMEOUT 5 /* secs between rexmt's */ + +struct sockaddr_in peeraddr; +int f; +short port; +int trace; +int verbose; +int connected; +char mode[32]; +char line[200]; +int margc; +char *margv[20]; +char *prompt = "tftp"; +jmp_buf toplevel; +void intr(); +struct servent *sp; + +void get __P((int, char **)); +void help __P((int, char **)); +void modecmd __P((int, char **)); +void put __P((int, char **)); +void quit __P((int, char **)); +void setascii __P((int, char **)); +void setbinary __P((int, char **)); +void setpeer __P((int, char **)); +void setrexmt __P((int, char **)); +void settimeout __P((int, char **)); +void settrace __P((int, char **)); +void setverbose __P((int, char **)); +void status __P((int, char **)); + +static __dead void command __P((void)); + +static void getusage __P((char *)); +static void makeargv __P((void)); +static void putusage __P((char *)); +static void settftpmode __P((char *)); + +#define HELPINDENT (sizeof("connect")) + +struct cmd { + char *name; + char *help; + void (*handler) __P((int, char **)); +}; + +char vhelp[] = "toggle verbose mode"; +char thelp[] = "toggle packet tracing"; +char chelp[] = "connect to remote tftp"; +char qhelp[] = "exit tftp"; +char hhelp[] = "print help information"; +char shelp[] = "send file"; +char rhelp[] = "receive file"; +char mhelp[] = "set file transfer mode"; +char sthelp[] = "show current status"; +char xhelp[] = "set per-packet retransmission timeout"; +char ihelp[] = "set total retransmission timeout"; +char ashelp[] = "set mode to netascii"; +char bnhelp[] = "set mode to octet"; + +struct cmd cmdtab[] = { + { "connect", chelp, setpeer }, + { "mode", mhelp, modecmd }, + { "put", shelp, put }, + { "get", rhelp, get }, + { "quit", qhelp, quit }, + { "verbose", vhelp, setverbose }, + { "trace", thelp, settrace }, + { "status", sthelp, status }, + { "binary", bnhelp, setbinary }, + { "ascii", ashelp, setascii }, + { "rexmt", xhelp, setrexmt }, + { "timeout", ihelp, settimeout }, + { "?", hhelp, help }, + { 0 } +}; + +struct cmd *getcmd(); +char *tail(); +char *index(); +char *rindex(); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + struct sockaddr_in sin; + + sp = getservbyname("tftp", "udp"); + if (sp == 0) { + fprintf(stderr, "tftp: udp/tftp: unknown service\n"); + exit(1); + } + f = socket(AF_INET, SOCK_DGRAM, 0); + if (f < 0) { + perror("tftp: socket"); + exit(3); + } + bzero((char *)&sin, sizeof(sin)); + sin.sin_family = AF_INET; + if (bind(f, (struct sockaddr *)&sin, sizeof(sin)) < 0) { + perror("tftp: bind"); + exit(1); + } + strcpy(mode, "netascii"); + signal(SIGINT, intr); + if (argc > 1) { + if (setjmp(toplevel) != 0) + exit(0); + setpeer(argc, argv); + } + if (setjmp(toplevel) != 0) + (void)putchar('\n'); + command(); +} + +char hostname[100]; + +void +setpeer(argc, argv) + int argc; + char *argv[]; +{ + struct hostent *host; + + if (argc < 2) { + strcpy(line, "Connect "); + printf("(to) "); + gets(&line[strlen(line)]); + makeargv(); + argc = margc; + argv = margv; + } + if (argc > 3) { + printf("usage: %s host-name [port]\n", argv[0]); + return; + } + host = gethostbyname(argv[1]); + if (host) { + peeraddr.sin_family = host->h_addrtype; + bcopy(host->h_addr, &peeraddr.sin_addr, host->h_length); + strcpy(hostname, host->h_name); + } else { + peeraddr.sin_family = AF_INET; + peeraddr.sin_addr.s_addr = inet_addr(argv[1]); + if (peeraddr.sin_addr.s_addr == -1) { + connected = 0; + printf("%s: unknown host\n", argv[1]); + return; + } + strcpy(hostname, argv[1]); + } + port = sp->s_port; + if (argc == 3) { + port = atoi(argv[2]); + if (port < 0) { + printf("%s: bad port number\n", argv[2]); + connected = 0; + return; + } + port = htons(port); + } + connected = 1; +} + +struct modes { + char *m_name; + char *m_mode; +} modes[] = { + { "ascii", "netascii" }, + { "netascii", "netascii" }, + { "binary", "octet" }, + { "image", "octet" }, + { "octet", "octet" }, +/* { "mail", "mail" }, */ + { 0, 0 } +}; + +void +modecmd(argc, argv) + int argc; + char *argv[]; +{ + register struct modes *p; + char *sep; + + if (argc < 2) { + printf("Using %s mode to transfer files.\n", mode); + return; + } + if (argc == 2) { + for (p = modes; p->m_name; p++) + if (strcmp(argv[1], p->m_name) == 0) + break; + if (p->m_name) { + settftpmode(p->m_mode); + return; + } + printf("%s: unknown mode\n", argv[1]); + /* drop through and print usage message */ + } + + printf("usage: %s [", argv[0]); + sep = " "; + for (p = modes; p->m_name; p++) { + printf("%s%s", sep, p->m_name); + if (*sep == ' ') + sep = " | "; + } + printf(" ]\n"); + return; +} + +void +setbinary(argc, argv) + int argc; + char *argv[]; +{ + + settftpmode("octet"); +} + +void +setascii(argc, argv) + int argc; + char *argv[]; +{ + + settftpmode("netascii"); +} + +static void +settftpmode(newmode) + char *newmode; +{ + strcpy(mode, newmode); + if (verbose) + printf("mode set to %s\n", mode); +} + + +/* + * Send file(s). + */ +void +put(argc, argv) + int argc; + char *argv[]; +{ + int fd; + register int n; + register char *cp, *targ; + + if (argc < 2) { + strcpy(line, "send "); + printf("(file) "); + gets(&line[strlen(line)]); + makeargv(); + argc = margc; + argv = margv; + } + if (argc < 2) { + putusage(argv[0]); + return; + } + targ = argv[argc - 1]; + if (index(argv[argc - 1], ':')) { + char *cp; + struct hostent *hp; + + for (n = 1; n < argc - 1; n++) + if (index(argv[n], ':')) { + putusage(argv[0]); + return; + } + cp = argv[argc - 1]; + targ = index(cp, ':'); + *targ++ = 0; + hp = gethostbyname(cp); + if (hp == NULL) { + fprintf(stderr, "tftp: %s: ", cp); + herror((char *)NULL); + return; + } + bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr, hp->h_length); + peeraddr.sin_family = hp->h_addrtype; + connected = 1; + strcpy(hostname, hp->h_name); + } + if (!connected) { + printf("No target machine specified.\n"); + return; + } + if (argc < 4) { + cp = argc == 2 ? tail(targ) : argv[1]; + fd = open(cp, O_RDONLY); + if (fd < 0) { + fprintf(stderr, "tftp: "); perror(cp); + return; + } + if (verbose) + printf("putting %s to %s:%s [%s]\n", + cp, hostname, targ, mode); + peeraddr.sin_port = port; + sendfile(fd, targ, mode); + return; + } + /* this assumes the target is a directory */ + /* on a remote unix system. hmmmm. */ + cp = index(targ, '\0'); + *cp++ = '/'; + for (n = 1; n < argc - 1; n++) { + strcpy(cp, tail(argv[n])); + fd = open(argv[n], O_RDONLY); + if (fd < 0) { + fprintf(stderr, "tftp: "); perror(argv[n]); + continue; + } + if (verbose) + printf("putting %s to %s:%s [%s]\n", + argv[n], hostname, targ, mode); + peeraddr.sin_port = port; + sendfile(fd, targ, mode); + } +} + +static void +putusage(s) + char *s; +{ + printf("usage: %s file ... host:target, or\n", s); + printf(" %s file ... target (when already connected)\n", s); +} + +/* + * Receive file(s). + */ +void +get(argc, argv) + int argc; + char *argv[]; +{ + int fd; + register int n; + register char *cp; + char *src; + + if (argc < 2) { + strcpy(line, "get "); + printf("(files) "); + gets(&line[strlen(line)]); + makeargv(); + argc = margc; + argv = margv; + } + if (argc < 2) { + getusage(argv[0]); + return; + } + if (!connected) { + for (n = 1; n < argc ; n++) + if (index(argv[n], ':') == 0) { + getusage(argv[0]); + return; + } + } + for (n = 1; n < argc ; n++) { + src = index(argv[n], ':'); + if (src == NULL) + src = argv[n]; + else { + struct hostent *hp; + + *src++ = 0; + hp = gethostbyname(argv[n]); + if (hp == NULL) { + fprintf(stderr, "tftp: %s: ", argv[n]); + herror((char *)NULL); + continue; + } + bcopy(hp->h_addr, (caddr_t)&peeraddr.sin_addr, + hp->h_length); + peeraddr.sin_family = hp->h_addrtype; + connected = 1; + strcpy(hostname, hp->h_name); + } + if (argc < 4) { + cp = argc == 3 ? argv[2] : tail(src); + fd = creat(cp, 0644); + if (fd < 0) { + fprintf(stderr, "tftp: "); perror(cp); + return; + } + if (verbose) + printf("getting from %s:%s to %s [%s]\n", + hostname, src, cp, mode); + peeraddr.sin_port = port; + recvfile(fd, src, mode); + break; + } + cp = tail(src); /* new .. jdg */ + fd = creat(cp, 0644); + if (fd < 0) { + fprintf(stderr, "tftp: "); perror(cp); + continue; + } + if (verbose) + printf("getting from %s:%s to %s [%s]\n", + hostname, src, cp, mode); + peeraddr.sin_port = port; + recvfile(fd, src, mode); + } +} + +static void +getusage(s) + char *s; +{ + printf("usage: %s host:file host:file ... file, or\n", s); + printf(" %s file file ... file if connected\n", s); +} + +int rexmtval = TIMEOUT; + +void +setrexmt(argc, argv) + int argc; + char *argv[]; +{ + int t; + + if (argc < 2) { + strcpy(line, "Rexmt-timeout "); + printf("(value) "); + gets(&line[strlen(line)]); + makeargv(); + argc = margc; + argv = margv; + } + if (argc != 2) { + printf("usage: %s value\n", argv[0]); + return; + } + t = atoi(argv[1]); + if (t < 0) + printf("%s: bad value\n", argv[1]); + else + rexmtval = t; +} + +int maxtimeout = 5 * TIMEOUT; + +void +settimeout(argc, argv) + int argc; + char *argv[]; +{ + int t; + + if (argc < 2) { + strcpy(line, "Maximum-timeout "); + printf("(value) "); + gets(&line[strlen(line)]); + makeargv(); + argc = margc; + argv = margv; + } + if (argc != 2) { + printf("usage: %s value\n", argv[0]); + return; + } + t = atoi(argv[1]); + if (t < 0) + printf("%s: bad value\n", argv[1]); + else + maxtimeout = t; +} + +void +status(argc, argv) + int argc; + char *argv[]; +{ + if (connected) + printf("Connected to %s.\n", hostname); + else + printf("Not connected.\n"); + printf("Mode: %s Verbose: %s Tracing: %s\n", mode, + verbose ? "on" : "off", trace ? "on" : "off"); + printf("Rexmt-interval: %d seconds, Max-timeout: %d seconds\n", + rexmtval, maxtimeout); +} + +void +intr() +{ + + signal(SIGALRM, SIG_IGN); + alarm(0); + longjmp(toplevel, -1); +} + +char * +tail(filename) + char *filename; +{ + register char *s; + + while (*filename) { + s = rindex(filename, '/'); + if (s == NULL) + break; + if (s[1]) + return (s + 1); + *s = '\0'; + } + return (filename); +} + +/* + * Command parser. + */ +static __dead void +command() +{ + register struct cmd *c; + + for (;;) { + printf("%s> ", prompt); + if (gets(line) == 0) { + if (feof(stdin)) { + exit(0); + } else { + continue; + } + } + if (line[0] == 0) + continue; + makeargv(); + if (margc == 0) + continue; + c = getcmd(margv[0]); + if (c == (struct cmd *)-1) { + printf("?Ambiguous command\n"); + continue; + } + if (c == 0) { + printf("?Invalid command\n"); + continue; + } + (*c->handler)(margc, margv); + } +} + +struct cmd * +getcmd(name) + register char *name; +{ + register char *p, *q; + register struct cmd *c, *found; + register int nmatches, longest; + + longest = 0; + nmatches = 0; + found = 0; + for (c = cmdtab; (p = c->name) != NULL; c++) { + for (q = name; *q == *p++; q++) + if (*q == 0) /* exact match? */ + return (c); + if (!*q) { /* the name was a prefix */ + if (q - name > longest) { + longest = q - name; + nmatches = 1; + found = c; + } else if (q - name == longest) + nmatches++; + } + } + if (nmatches > 1) + return ((struct cmd *)-1); + return (found); +} + +/* + * Slice a string up into argc/argv. + */ +static void +makeargv() +{ + register char *cp; + register char **argp = margv; + + margc = 0; + for (cp = line; *cp;) { + while (isspace(*cp)) + cp++; + if (*cp == '\0') + break; + *argp++ = cp; + margc += 1; + while (*cp != '\0' && !isspace(*cp)) + cp++; + if (*cp == '\0') + break; + *cp++ = '\0'; + } + *argp++ = 0; +} + +void +quit(argc, argv) + int argc; + char *argv[]; +{ + + exit(0); +} + +/* + * Help command. + */ +void +help(argc, argv) + int argc; + char *argv[]; +{ + register struct cmd *c; + + if (argc == 1) { + printf("Commands may be abbreviated. Commands are:\n\n"); + for (c = cmdtab; c->name; c++) + printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help); + return; + } + while (--argc > 0) { + register char *arg; + arg = *++argv; + c = getcmd(arg); + if (c == (struct cmd *)-1) + printf("?Ambiguous help command %s\n", arg); + else if (c == (struct cmd *)0) + printf("?Invalid help command %s\n", arg); + else + printf("%s\n", c->help); + } +} + +void +settrace(argc, argv) + int argc; + char **argv; +{ + trace = !trace; + printf("Packet tracing %s.\n", trace ? "on" : "off"); +} + +void +setverbose(argc, argv) + int argc; + char **argv; +{ + verbose = !verbose; + printf("Verbose mode %s.\n", verbose ? "on" : "off"); +} diff --git a/usr.bin/tftp/tftp.1 b/usr.bin/tftp/tftp.1 new file mode 100644 index 0000000..b2c5a16 --- /dev/null +++ b/usr.bin/tftp/tftp.1 @@ -0,0 +1,173 @@ +.\" Copyright (c) 1990, 1993, 1994 +.\" 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. +.\" +.\" @(#)tftp.1 8.2 (Berkeley) 4/18/94 +.\" +.Dd April 18, 1994 +.Dt TFTP 1 +.Os BSD 4.3 +.Sh NAME +.Nm tftp +.Nd trivial file transfer program +.Sh SYNOPSIS +.Nm tftp +.Op Ar host +.Sh DESCRIPTION +.Nm Tftp +is the user interface to the Internet +.Tn TFTP +(Trivial File Transfer Protocol), +which allows users to transfer files to and from a remote machine. +The remote +.Ar host +may be specified on the command line, in which case +.Nm tftp +uses +.Ar host +as the default host for future transfers (see the +.Cm connect +command below). +.Sh COMMANDS +Once +.Nm tftp +is running, it issues the prompt +.LI tftp> +and recognizes the following commands: +.Pp +.Bl -tag -width verbose -compact +.It Cm \&? Ar command-name ... +Print help information. +.Pp +.It Cm ascii +Shorthand for "mode ascii" +.Pp +.It Cm binary +Shorthand for "mode binary" +.Pp +.It Cm connect Ar host-name Op Ar port +Set the +.Ar host +(and optionally +.Ar port ) +for transfers. +Note that the +.Tn TFTP +protocol, unlike the +.Tn FTP +protocol, +does not maintain connections between transfers; thus, the +.Cm connect +command does not actually create a connection, +but merely remembers what host is to be used for transfers. +You do not have to use the +.Cm connect +command; the remote host can be specified as part of the +.Cm get +or +.Cm put +commands. +.Pp +.It Cm get Ar filename +.It Cm get Ar remotename localname +.It Cm get Ar file1 file2 ... fileN +Get a file or set of files from the specified +.Ar sources . +.Ar Source +can be in one of two forms: +a filename on the remote host, if the host has already been specified, +or a string of the form +.Ar hosts:filename +to specify both a host and filename at the same time. +If the latter form is used, +the last hostname specified becomes the default for future transfers. +.Pp +.It Cm mode Ar transfer-mode +Set the mode for transfers; +.Ar transfer-mode +may be one of +.Em ascii +or +.Em binary . +The default is +.Em ascii . +.Pp +.It Cm put Ar file +.It Cm put Ar localfile remotefile +.It Cm put Ar file1 file2 ... fileN remote-directory +Put a file or set of files to the specified +remote file or directory. +The destination +can be in one of two forms: +a filename on the remote host, if the host has already been specified, +or a string of the form +.Ar hosts:filename +to specify both a host and filename at the same time. +If the latter form is used, +the hostname specified becomes the default for future transfers. +If the remote-directory form is used, the remote host is +assumed to be a +.Tn UNIX +machine. +.Pp +.It Cm quit +Exit +.Nm tftp . +An end of file also exits. +.Pp +.It Cm rexmt Ar retransmission-timeout +Set the per-packet retransmission timeout, in seconds. +.Pp +.It Cm status +Show current status. +.Pp +.It Cm timeout Ar total-transmission-timeout +Set the total transmission timeout, in seconds. +.Pp +.It Cm trace +Toggle packet tracing. +.Pp +.It Cm verbose +Toggle verbose mode. +.El +.Sh BUGS +.Pp +Because there is no user-login or validation within +the +.Tn TFTP +protocol, the remote site will probably have some +sort of file-access restrictions in place. The +exact methods are specific to each site and therefore +difficult to document here. +.Sh HISTORY +The +.Nm +command appeared in +.Bx 4.3 . diff --git a/usr.bin/tftp/tftp.c b/usr.bin/tftp/tftp.c new file mode 100644 index 0000000..2ca4001 --- /dev/null +++ b/usr.bin/tftp/tftp.c @@ -0,0 +1,453 @@ +/* + * 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 char sccsid[] = "@(#)tftp.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +/* Many bug fixes are from Jim Guyton <guyton@rand-unix> */ + +/* + * TFTP User Program -- Protocol Machines + */ +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/time.h> + +#include <netinet/in.h> + +#include <arpa/tftp.h> + +#include <errno.h> +#include <setjmp.h> +#include <signal.h> +#include <stdio.h> +#include <unistd.h> + +#include "extern.h" +#include "tftpsubs.h" + +extern int errno; + +extern struct sockaddr_in peeraddr; /* filled in by main */ +extern int f; /* the opened socket */ +extern int trace; +extern int verbose; +extern int rexmtval; +extern int maxtimeout; + +#define PKTSIZE SEGSIZE+4 +char ackbuf[PKTSIZE]; +int timeout; +jmp_buf toplevel; +jmp_buf timeoutbuf; + +static void nak __P((int)); +static int makerequest __P((int, const char *, struct tftphdr *, const char *)); +static void printstats __P((const char *, unsigned long)); +static void startclock __P((void)); +static void stopclock __P((void)); +static void timer __P((int)); +static void tpacket __P((const char *, struct tftphdr *, int)); + +/* + * Send the requested file. + */ +void +sendfile(fd, name, mode) + int fd; + char *name; + char *mode; +{ + register struct tftphdr *ap; /* data and ack packets */ + struct tftphdr *r_init(), *dp; + register int n; + volatile int block, size, convert; + volatile unsigned long amount; + struct sockaddr_in from; + int fromlen; + FILE *file; + + startclock(); /* start stat's clock */ + dp = r_init(); /* reset fillbuf/read-ahead code */ + ap = (struct tftphdr *)ackbuf; + file = fdopen(fd, "r"); + convert = !strcmp(mode, "netascii"); + block = 0; + amount = 0; + + signal(SIGALRM, timer); + do { + if (block == 0) + size = makerequest(WRQ, name, dp, mode) - 4; + else { + /* size = read(fd, dp->th_data, SEGSIZE); */ + size = readit(file, &dp, convert); + if (size < 0) { + nak(errno + 100); + break; + } + dp->th_opcode = htons((u_short)DATA); + dp->th_block = htons((u_short)block); + } + timeout = 0; + (void) setjmp(timeoutbuf); +send_data: + if (trace) + tpacket("sent", dp, size + 4); + n = sendto(f, dp, size + 4, 0, + (struct sockaddr *)&peeraddr, sizeof(peeraddr)); + if (n != size + 4) { + perror("tftp: sendto"); + goto abort; + } + read_ahead(file, convert); + for ( ; ; ) { + alarm(rexmtval); + do { + fromlen = sizeof(from); + n = recvfrom(f, ackbuf, sizeof(ackbuf), 0, + (struct sockaddr *)&from, &fromlen); + } while (n <= 0); + alarm(0); + if (n < 0) { + perror("tftp: recvfrom"); + goto abort; + } + peeraddr.sin_port = from.sin_port; /* added */ + if (trace) + tpacket("received", ap, n); + /* should verify packet came from server */ + ap->th_opcode = ntohs(ap->th_opcode); + ap->th_block = ntohs(ap->th_block); + if (ap->th_opcode == ERROR) { + printf("Error code %d: %s\n", ap->th_code, + ap->th_msg); + goto abort; + } + if (ap->th_opcode == ACK) { + int j; + + if (ap->th_block == block) { + break; + } + /* On an error, try to synchronize + * both sides. + */ + j = synchnet(f); + if (j && trace) { + printf("discarded %d packets\n", + j); + } + if (ap->th_block == (block-1)) { + goto send_data; + } + } + } + if (block > 0) + amount += size; + block++; + } while (size == SEGSIZE || block == 1); +abort: + fclose(file); + stopclock(); + if (amount > 0) + printstats("Sent", amount); +} + +/* + * Receive a file. + */ +void +recvfile(fd, name, mode) + int fd; + char *name; + char *mode; +{ + register struct tftphdr *ap; + struct tftphdr *dp, *w_init(); + register int n; + volatile int block, size, firsttrip; + volatile unsigned long amount; + struct sockaddr_in from; + int fromlen; + FILE *file; + volatile int convert; /* true if converting crlf -> lf */ + + startclock(); + dp = w_init(); + ap = (struct tftphdr *)ackbuf; + file = fdopen(fd, "w"); + convert = !strcmp(mode, "netascii"); + block = 1; + firsttrip = 1; + amount = 0; + + signal(SIGALRM, timer); + do { + if (firsttrip) { + size = makerequest(RRQ, name, ap, mode); + firsttrip = 0; + } else { + ap->th_opcode = htons((u_short)ACK); + ap->th_block = htons((u_short)(block)); + size = 4; + block++; + } + timeout = 0; + (void) setjmp(timeoutbuf); +send_ack: + if (trace) + tpacket("sent", ap, size); + if (sendto(f, ackbuf, size, 0, (struct sockaddr *)&peeraddr, + sizeof(peeraddr)) != size) { + alarm(0); + perror("tftp: sendto"); + goto abort; + } + write_behind(file, convert); + for ( ; ; ) { + alarm(rexmtval); + do { + fromlen = sizeof(from); + n = recvfrom(f, dp, PKTSIZE, 0, + (struct sockaddr *)&from, &fromlen); + } while (n <= 0); + alarm(0); + if (n < 0) { + perror("tftp: recvfrom"); + goto abort; + } + peeraddr.sin_port = from.sin_port; /* added */ + if (trace) + tpacket("received", dp, n); + /* should verify client address */ + dp->th_opcode = ntohs(dp->th_opcode); + dp->th_block = ntohs(dp->th_block); + if (dp->th_opcode == ERROR) { + printf("Error code %d: %s\n", dp->th_code, + dp->th_msg); + goto abort; + } + if (dp->th_opcode == DATA) { + int j; + + if (dp->th_block == block) { + break; /* have next packet */ + } + /* On an error, try to synchronize + * both sides. + */ + j = synchnet(f); + if (j && trace) { + printf("discarded %d packets\n", j); + } + if (dp->th_block == (block-1)) { + goto send_ack; /* resend ack */ + } + } + } + /* size = write(fd, dp->th_data, n - 4); */ + size = writeit(file, &dp, n - 4, convert); + if (size < 0) { + nak(errno + 100); + break; + } + amount += size; + } while (size == SEGSIZE); +abort: /* ok to ack, since user */ + ap->th_opcode = htons((u_short)ACK); /* has seen err msg */ + ap->th_block = htons((u_short)block); + (void) sendto(f, ackbuf, 4, 0, (struct sockaddr *)&peeraddr, + sizeof(peeraddr)); + write_behind(file, convert); /* flush last buffer */ + fclose(file); + stopclock(); + if (amount > 0) + printstats("Received", amount); +} + +static int +makerequest(request, name, tp, mode) + int request; + const char *name; + struct tftphdr *tp; + const char *mode; +{ + register char *cp; + + tp->th_opcode = htons((u_short)request); + cp = tp->th_stuff; + strcpy(cp, name); + cp += strlen(name); + *cp++ = '\0'; + strcpy(cp, mode); + cp += strlen(mode); + *cp++ = '\0'; + return (cp - (char *)tp); +} + +struct errmsg { + int e_code; + 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" }, + { -1, 0 } +}; + +/* + * 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(error) + int error; +{ + register struct errmsg *pe; + register struct tftphdr *tp; + int length; + char *strerror(); + + tp = (struct tftphdr *)ackbuf; + 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; + } + strcpy(tp->th_msg, pe->e_msg); + length = strlen(pe->e_msg) + 4; + if (trace) + tpacket("sent", tp, length); + if (sendto(f, ackbuf, length, 0, (struct sockaddr *)&peeraddr, + sizeof(peeraddr)) != length) + perror("nak"); +} + +static void +tpacket(s, tp, n) + const char *s; + struct tftphdr *tp; + int n; +{ + static char *opcodes[] = + { "#0", "RRQ", "WRQ", "DATA", "ACK", "ERROR" }; + register char *cp, *file; + u_short op = ntohs(tp->th_opcode); + char *index(); + + if (op < RRQ || op > ERROR) + printf("%s opcode=%x ", s, op); + else + printf("%s %s ", s, opcodes[op]); + switch (op) { + + case RRQ: + case WRQ: + n -= 2; + file = cp = tp->th_stuff; + cp = index(cp, '\0'); + printf("<file=%s, mode=%s>\n", file, cp + 1); + break; + + case DATA: + printf("<block=%d, %d bytes>\n", ntohs(tp->th_block), n - 4); + break; + + case ACK: + printf("<block=%d>\n", ntohs(tp->th_block)); + break; + + case ERROR: + printf("<code=%d, msg=%s>\n", ntohs(tp->th_code), tp->th_msg); + break; + } +} + +struct timeval tstart; +struct timeval tstop; + +static void +startclock() +{ + + (void)gettimeofday(&tstart, NULL); +} + +static void +stopclock() +{ + + (void)gettimeofday(&tstop, NULL); +} + +static void +printstats(direction, amount) + const char *direction; + unsigned long amount; +{ + double delta; + /* compute delta in 1/10's second units */ + delta = ((tstop.tv_sec*10.)+(tstop.tv_usec/100000)) - + ((tstart.tv_sec*10.)+(tstart.tv_usec/100000)); + delta = delta/10.; /* back to seconds */ + printf("%s %d bytes in %.1f seconds", direction, amount, delta); + if (verbose) + printf(" [%.0f bits/sec]", (amount*8.)/delta); + putchar('\n'); +} + +static void +timer(sig) + int sig; +{ + + timeout += rexmtval; + if (timeout >= maxtimeout) { + printf("Transfer timed out.\n"); + longjmp(toplevel, -1); + } + longjmp(timeoutbuf, 1); +} diff --git a/usr.bin/tftp/tftpsubs.c b/usr.bin/tftp/tftpsubs.c new file mode 100644 index 0000000..a143602 --- /dev/null +++ b/usr.bin/tftp/tftpsubs.c @@ -0,0 +1,273 @@ +/* + * 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 char sccsid[] = "@(#)tftpsubs.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +/* Simple minded read-ahead/write-behind subroutines for tftp user and + server. Written originally with multiple buffers in mind, but current + implementation has two buffer logic wired in. + + Todo: add some sort of final error check so when the write-buffer + is finally flushed, the caller can detect if the disk filled up + (or had an i/o error) and return a nak to the other side. + + Jim Guyton 10/85 + */ + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <arpa/tftp.h> + +#include <stdio.h> +#include <unistd.h> + +#include "tftpsubs.h" + +#define PKTSIZE SEGSIZE+4 /* should be moved to tftp.h */ + +struct bf { + int counter; /* size of data in buffer, or flag */ + char buf[PKTSIZE]; /* room for data packet */ +} bfs[2]; + + /* Values for bf.counter */ +#define BF_ALLOC -3 /* alloc'd but not yet filled */ +#define BF_FREE -2 /* free */ +/* [-1 .. SEGSIZE] = size of data in the data buffer */ + +static int nextone; /* index of next buffer to use */ +static int current; /* index of buffer in use */ + + /* control flags for crlf conversions */ +int newline = 0; /* fillbuf: in middle of newline expansion */ +int prevchar = -1; /* putbuf: previous char (cr check) */ + +static struct tftphdr *rw_init(); + +struct tftphdr *w_init() { return rw_init(0); } /* write-behind */ +struct tftphdr *r_init() { return rw_init(1); } /* read-ahead */ + +static struct tftphdr * +rw_init(x) /* init for either read-ahead or write-behind */ + int x; /* zero for write-behind, one for read-head */ +{ + newline = 0; /* init crlf flag */ + prevchar = -1; + bfs[0].counter = BF_ALLOC; /* pass out the first buffer */ + current = 0; + bfs[1].counter = BF_FREE; + nextone = x; /* ahead or behind? */ + return (struct tftphdr *)bfs[0].buf; +} + + +/* Have emptied current buffer by sending to net and getting ack. + Free it and return next buffer filled with data. + */ +int +readit(file, dpp, convert) + FILE *file; /* file opened for read */ + struct tftphdr **dpp; + int convert; /* if true, convert to ascii */ +{ + struct bf *b; + + bfs[current].counter = BF_FREE; /* free old one */ + current = !current; /* "incr" current */ + + b = &bfs[current]; /* look at new buffer */ + if (b->counter == BF_FREE) /* if it's empty */ + read_ahead(file, convert); /* fill it */ +/* assert(b->counter != BF_FREE);*//* check */ + *dpp = (struct tftphdr *)b->buf; /* set caller's ptr */ + return b->counter; +} + +/* + * fill the input buffer, doing ascii conversions if requested + * conversions are lf -> cr,lf and cr -> cr, nul + */ +void +read_ahead(file, convert) + FILE *file; /* file opened for read */ + int convert; /* if true, convert to ascii */ +{ + register int i; + register char *p; + register int c; + struct bf *b; + struct tftphdr *dp; + + b = &bfs[nextone]; /* look at "next" buffer */ + if (b->counter != BF_FREE) /* nop if not free */ + return; + nextone = !nextone; /* "incr" next buffer ptr */ + + dp = (struct tftphdr *)b->buf; + + if (convert == 0) { + b->counter = read(fileno(file), dp->th_data, SEGSIZE); + return; + } + + p = dp->th_data; + for (i = 0 ; i < SEGSIZE; i++) { + if (newline) { + if (prevchar == '\n') + c = '\n'; /* lf to cr,lf */ + else c = '\0'; /* cr to cr,nul */ + newline = 0; + } + else { + c = getc(file); + if (c == EOF) break; + if (c == '\n' || c == '\r') { + prevchar = c; + c = '\r'; + newline = 1; + } + } + *p++ = c; + } + b->counter = (int)(p - dp->th_data); +} + +/* Update count associated with the buffer, get new buffer + from the queue. Calls write_behind only if next buffer not + available. + */ +int +writeit(file, dpp, ct, convert) + FILE *file; + struct tftphdr **dpp; + int ct, convert; +{ + bfs[current].counter = ct; /* set size of data to write */ + current = !current; /* switch to other buffer */ + if (bfs[current].counter != BF_FREE) /* if not free */ + (void)write_behind(file, convert); /* flush it */ + bfs[current].counter = BF_ALLOC; /* mark as alloc'd */ + *dpp = (struct tftphdr *)bfs[current].buf; + return ct; /* this is a lie of course */ +} + +/* + * Output a buffer to a file, converting from netascii if requested. + * CR,NUL -> CR and CR,LF => LF. + * Note spec is undefined if we get CR as last byte of file or a + * CR followed by anything else. In this case we leave it alone. + */ +int +write_behind(file, convert) + FILE *file; + int convert; +{ + char *buf; + int count; + register int ct; + register char *p; + register int c; /* current character */ + struct bf *b; + struct tftphdr *dp; + + b = &bfs[nextone]; + if (b->counter < -1) /* anything to flush? */ + return 0; /* just nop if nothing to do */ + + count = b->counter; /* remember byte count */ + b->counter = BF_FREE; /* reset flag */ + dp = (struct tftphdr *)b->buf; + nextone = !nextone; /* incr for next time */ + buf = dp->th_data; + + if (count <= 0) return -1; /* nak logic? */ + + if (convert == 0) + return write(fileno(file), buf, count); + + p = buf; + ct = count; + while (ct--) { /* loop over the buffer */ + c = *p++; /* pick up a character */ + if (prevchar == '\r') { /* if prev char was cr */ + if (c == '\n') /* if have cr,lf then just */ + fseek(file, -1, 1); /* smash lf on top of the cr */ + else + if (c == '\0') /* if have cr,nul then */ + goto skipit; /* just skip over the putc */ + /* else just fall through and allow it */ + } + putc(c, file); +skipit: + prevchar = c; + } + return count; +} + + +/* When an error has occurred, it is possible that the two sides + * are out of synch. Ie: that what I think is the other side's + * response to packet N is really their response to packet N-1. + * + * So, to try to prevent that, we flush all the input queued up + * for us on the network connection on our host. + * + * We return the number of packets we flushed (mostly for reporting + * when trace is active). + */ + +int +synchnet(f) + int f; /* socket to flush */ +{ + int i, j = 0; + char rbuf[PKTSIZE]; + struct sockaddr_in from; + int fromlen; + + while (1) { + (void) ioctl(f, FIONREAD, &i); + if (i) { + j++; + fromlen = sizeof from; + (void) recvfrom(f, rbuf, sizeof (rbuf), 0, + (struct sockaddr *)&from, &fromlen); + } else { + return(j); + } + } +} diff --git a/usr.bin/tftp/tftpsubs.h b/usr.bin/tftp/tftpsubs.h new file mode 100644 index 0000000..1733bf1 --- /dev/null +++ b/usr.bin/tftp/tftpsubs.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 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. + * + * @(#)tftpsubs.h 8.1 (Berkeley) 6/6/93 + */ + +/* + * Prototypes for read-ahead/write-behind subroutines for tftp user and + * server. + */ +struct tftphdr *r_init __P((void)); +void read_ahead __P((FILE *, int)); +int readit __P((FILE *, struct tftphdr **, int)); + +int synchnet __P((int)); + +struct tftphdr *w_init __P((void)); +int write_behind __P((FILE *, int)); +int writeit __P((FILE *, struct tftphdr **, int, int)); |