print-tftp.c revision 17680
117680Spst/* 217680Spst * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996 317680Spst * The Regents of the University of California. All rights reserved. 417680Spst * 517680Spst * Redistribution and use in source and binary forms, with or without 617680Spst * modification, are permitted provided that: (1) source code distributions 717680Spst * retain the above copyright notice and this paragraph in its entirety, (2) 817680Spst * distributions including binary code include the above copyright notice and 917680Spst * this paragraph in its entirety in the documentation or other materials 1017680Spst * provided with the distribution, and (3) all advertising materials mentioning 1117680Spst * features or use of this software display the following acknowledgement: 1217680Spst * ``This product includes software developed by the University of California, 1317680Spst * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 1417680Spst * the University nor the names of its contributors may be used to endorse 1517680Spst * or promote products derived from this software without specific prior 1617680Spst * written permission. 1717680Spst * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 1817680Spst * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 1917680Spst * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 2017680Spst * 2117680Spst * Format and print trivial file transfer protocol packets. 2217680Spst */ 2317680Spst 2417680Spst#ifndef lint 2517680Spststatic char rcsid[] = 2617680Spst "@(#) $Header: print-tftp.c,v 1.27 96/07/23 14:17:28 leres Exp $ (LBL)"; 2717680Spst#endif 2817680Spst 2917680Spst#include <sys/param.h> 3017680Spst#include <sys/time.h> 3117680Spst 3217680Spst#include <netinet/in.h> 3317680Spst 3417680Spst#include <arpa/tftp.h> 3517680Spst 3617680Spst#include <ctype.h> 3717680Spst#include <stdio.h> 3817680Spst#include <string.h> 3917680Spst 4017680Spst#include "interface.h" 4117680Spst#include "addrtoname.h" 4217680Spst 4317680Spst/* op code to string mapping */ 4417680Spststatic struct tok op2str[] = { 4517680Spst { RRQ, "RRQ" }, /* read request */ 4617680Spst { WRQ, "WRQ" }, /* write request */ 4717680Spst { DATA, "DATA" }, /* data packet */ 4817680Spst { ACK, "ACK" }, /* acknowledgement */ 4917680Spst { ERROR, "ERROR" }, /* error code */ 5017680Spst { 0, NULL } 5117680Spst}; 5217680Spst 5317680Spst/* error code to string mapping */ 5417680Spststatic struct tok err2str[] = { 5517680Spst { EUNDEF, "EUNDEF" }, /* not defined */ 5617680Spst { ENOTFOUND, "ENOTFOUND" }, /* file not found */ 5717680Spst { EACCESS, "EACCESS" }, /* access violation */ 5817680Spst { ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */ 5917680Spst { EBADOP, "EBADOP" }, /* illegal TFTP operation */ 6017680Spst { EBADID, "EBADID" }, /* unknown transfer ID */ 6117680Spst { EEXISTS, "EEXISTS" }, /* file already exists */ 6217680Spst { ENOUSER, "ENOUSER" }, /* no such user */ 6317680Spst { 0, NULL } 6417680Spst}; 6517680Spst 6617680Spst/* 6717680Spst * Print trivial file transfer program requests 6817680Spst */ 6917680Spstvoid 7017680Spsttftp_print(register const u_char *bp, u_int length) 7117680Spst{ 7217680Spst register const struct tftphdr *tp; 7317680Spst register const char *cp; 7417680Spst register const u_char *p; 7517680Spst register int opcode, i; 7617680Spst static char tstr[] = " [|tftp]"; 7717680Spst 7817680Spst tp = (const struct tftphdr *)bp; 7917680Spst 8017680Spst /* Print length */ 8117680Spst printf(" %d", length); 8217680Spst 8317680Spst /* Print tftp request type */ 8417680Spst TCHECK(tp->th_opcode); 8517680Spst opcode = ntohs(tp->th_opcode); 8617680Spst cp = tok2str(op2str, "tftp-#%d", opcode); 8717680Spst printf(" %s", cp); 8817680Spst /* Bail if bogus opcode */ 8917680Spst if (*cp == 't') 9017680Spst return; 9117680Spst 9217680Spst switch (opcode) { 9317680Spst 9417680Spst case RRQ: 9517680Spst case WRQ: 9617680Spst /* 9717680Spst * XXX Not all arpa/tftp.h's specify th_stuff as any 9817680Spst * array; use address of th_block instead 9917680Spst */ 10017680Spst#ifdef notdef 10117680Spst p = (u_char *)tp->th_stuff; 10217680Spst#else 10317680Spst p = (u_char *)&tp->th_block; 10417680Spst#endif 10517680Spst fputs(" \"", stdout); 10617680Spst i = fn_print(p, snapend); 10717680Spst putchar('"'); 10817680Spst if (i) 10917680Spst goto trunc; 11017680Spst break; 11117680Spst 11217680Spst case ACK: 11317680Spst case DATA: 11417680Spst TCHECK(tp->th_block); 11517680Spst printf(" block %d", ntohs(tp->th_block)); 11617680Spst break; 11717680Spst 11817680Spst case ERROR: 11917680Spst /* Print error code string */ 12017680Spst TCHECK(tp->th_code); 12117680Spst printf(" %s ", tok2str(err2str, "tftp-err-#%d \"", 12217680Spst ntohs(tp->th_code))); 12317680Spst /* Print error message string */ 12417680Spst i = fn_print((const u_char *)tp->th_data, snapend); 12517680Spst putchar('"'); 12617680Spst if (i) 12717680Spst goto trunc; 12817680Spst break; 12917680Spst 13017680Spst default: 13117680Spst /* We shouldn't get here */ 13217680Spst printf("(unknown #%d)", opcode); 13317680Spst break; 13417680Spst } 13517680Spst return; 13617680Spsttrunc: 13717680Spst fputs(tstr, stdout); 13817680Spst return; 13917680Spst} 140