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-rw-r--r--contrib/tftp/tftp.c536
1 files changed, 0 insertions, 536 deletions
diff --git a/contrib/tftp/tftp.c b/contrib/tftp/tftp.c
deleted file mode 100644
index 894e535e..00000000
--- a/contrib/tftp/tftp.c
+++ /dev/null
@@ -1,536 +0,0 @@
-/*
- * Copyright (c) 1983 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)tftp.c 5.7 (Berkeley) 6/29/88";
-#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 <signal.h>
-#include <stdio.h>
-#include <errno.h>
-#include <setjmp.h>
-
-extern int errno;
-
-extern struct sockaddr_in sin; /* filled in by main */
-extern int f; /* the opened socket */
-extern int trace;
-extern int verbose;
-extern int rexmtval;
-extern int maxtimeout;
-extern int segsize;
-
-#define PKTSIZE (1432+4) /* SEGSIZE+4 */
-char ackbuf[PKTSIZE];
-int timeout;
-jmp_buf toplevel;
-jmp_buf timeoutbuf;
-
-#ifndef OACK
-#define OACK 6
-#endif
-
-void timer(int sig)
-{
-
- signal(SIGALRM, timer);
- timeout += rexmtval;
- if (timeout >= maxtimeout) {
- printf("Transfer timed out.\n");
- longjmp(toplevel, -1);
- }
- longjmp(timeoutbuf, 1);
-}
-
-strnlen(s, n)
- char *s;
- int n;
-{
- int i = 0;
-
- while (n-- > 0 && *s++) i++;
- return(i);
-}
-
-/*
- * Parse an OACK package and set blocksize accordingly
- */
-parseoack(cp, sz)
- char *cp;
- int sz;
-{
- int n;
-
- segsize = 512;
- while (sz > 0 && *cp) {
- n = strnlen(cp, sz);
- if (n == 7 && !strncmp("blksize", cp, 7)) {
- cp += 8;
- sz -= 8;
- if (sz <= 0)
- break;
- for (segsize = 0, n = strnlen(cp, sz); n > 0;
- n--, cp++, sz--) {
- if (*cp < '0' || *cp > '9')
- break;
- segsize = 10*segsize + *cp - '0'; }
- }
- cp += n + 1;
- sz -= n + 1;
- }
- if (segsize < 8 || segsize > 1432) {
- printf("Remote host negotiated illegal blocksize %d\n",
- segsize);
- segsize = 512;
- longjmp(timeoutbuf, -1);
- }
-}
-
-/*
- * Send the requested file.
- */
-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 size, n;
- u_short block = 0;
- register unsigned long amount = 0;
- struct sockaddr_in from;
- int fromlen;
- int convert; /* true if doing nl->crlf conversion */
- 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");
-
- 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(block);
- }
- timeout = 0;
- (void) setjmp(timeoutbuf);
-send_data:
- if (trace)
- tpacket("sent", dp, size + 4);
- n = sendto(f, dp, size + 4, 0, (struct sockaddr *)&sin,
- sizeof (sin));
- if (n != size + 4) {
- perror("tftp: sendto");
- goto abort;
- }
- if (block) /* do not start reading until the blocksize
- has been negotiated */
- 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;
- }
- sin.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);
- 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;
-
- ap->th_block = ntohs(ap->th_block);
-
- if (block == 0) {
- if (trace)
- printf("server does not know "
- "about RFC1782; reset"
- "ting blocksize\n");
- segsize = 512;
- }
- 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;
- }
- }
- else if (ap->th_opcode == OACK) {
- if (block) {
- printf("protocol violation\n");
- longjmp(toplevel, -1);
- }
- parseoack(&ap->th_stuff, n - 2);
- break;
- }
- }
- if (block > 0)
- amount += size;
- else
- read_ahead(file, convert);
- block++;
- } while (size == segsize || block == 1);
-abort:
- fclose(file);
- stopclock();
- if (amount > 0)
- printstats("Sent", amount);
-}
-
-/*
- * Receive a file.
- */
-recvfile(fd, name, mode)
- int fd;
- char *name;
- char *mode;
-{
- register struct tftphdr *ap;
- struct tftphdr *dp, *w_init();
- register int n, size;
- u_short block = 1;
- unsigned long amount = 0;
- struct sockaddr_in from;
- int fromlen, firsttrip = 1;
- FILE *file;
- int convert; /* true if converting crlf -> lf */
- int waitforoack = 1;
-
- startclock();
- dp = w_init();
- ap = (struct tftphdr *)ackbuf;
- file = fdopen(fd, "w");
- convert = !strcmp(mode, "netascii");
-
- 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(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 *)&sin,
- sizeof (sin)) != size) {
- alarm(0);
- perror("tftp: sendto");
- goto abort;
- }
- if (!waitforoack)
- 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;
- }
- sin.sin_port = from.sin_port; /* added */
- if (trace)
- tpacket("received", dp, n);
- /* should verify client address */
- dp->th_opcode = ntohs(dp->th_opcode);
- 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 (waitforoack) {
- if (trace)
- printf("server does not know "
- "about RFC1782; reset"
- "ting blocksize\n");
- waitforoack = 0;
- segsize = 512;
- }
- dp->th_block = ntohs(dp->th_block);
- 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 */
- }
- }
- else if (dp->th_opcode == OACK) {
- if (block != 1 || !waitforoack) {
- printf("protocol violation\n");
- longjmp(toplevel, -1);
- }
- waitforoack = 0;
- parseoack(&dp->th_stuff, n - 2);
- ap->th_opcode = htons((u_short)ACK);
- ap->th_block = htons(0);
- size = 4;
- goto send_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(block);
- (void) sendto(f, ackbuf, 4, 0, (struct sockaddr *)&sin, sizeof (sin));
- write_behind(file, convert); /* flush last buffer */
- fclose(file);
- stopclock();
- if (amount > 0)
- printstats("Received", amount);
-}
-
-makerequest(request, name, tp, mode)
- int request;
- char *name, *mode;
- struct tftphdr *tp;
-{
- 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';
- strcpy(cp, "blksize");
- cp += 7;
- *cp++ = '\0';
- sprintf(cp, "%d", segsize);
- cp += strlen(cp) + 1;
- return (cp - (char *)tp);
-}
-
-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" },
- { -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.
- */
-nak(error)
- int error;
-{
- register struct tftphdr *tp;
- int length;
- register struct errmsg *pe;
-/* extern char *sys_errlist[]; */
-
- 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 = sys_errlist[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 *)&sin, sizeof (sin))
- != length)
- perror("nak");
-}
-
-topts(cp, sz)
- char *cp;
- int sz;
-{
- int n, i = 0;
-
- while (sz > 0 && *cp) {
- n = strnlen(cp, sz);
- if (n > 0) {
- printf("%s%s=", i++ ? ", " : "", cp);
- cp += n + 1;
- sz -= n + 1;
- if (sz <= 0)
- break;
- n = strnlen(cp, sz);
- if (n > 0)
- printf("%s", cp);
- }
- cp += n + 1;
- sz -= n + 1;
- }
-}
-
-tpacket(s, tp, n)
- char *s;
- struct tftphdr *tp;
- int n;
-{
- static char *opcodes[] =
- { "#0", "RRQ", "WRQ", "DATA", "ACK", "ERROR", "OACK" };
- register char *cp, *file;
- u_short op = ntohs(tp->th_opcode);
- char *index();
-
- if (op < RRQ || op > OACK)
- 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, opts: ", file, cp + 1);
- topts(index(cp + 1, '\000') + 1, n - strlen(file)
- - strlen(cp + 1) - 2);
- printf(">\n");
- 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;
- case OACK:
- printf("<");
- topts(tp->th_stuff, n - 2);
- printf(">\n");
- break;
- }
-}
-
-struct timeval tstart;
-struct timeval tstop;
-struct timezone zone;
-
-startclock() {
- gettimeofday(&tstart, &zone);
-}
-
-stopclock() {
- gettimeofday(&tstop, &zone);
-}
-
-printstats(direction, amount)
-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 %ld bytes in %.1f seconds", direction, amount, delta);
- if ((verbose) && (delta >= 0.1))
- printf(" [%.0f bits/sec]", (amount*8.)/delta);
- putchar('\n');
-}
-
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