12949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* 22949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 32949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * The Regents of the University of California. All rights reserved. 42949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 52949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Redistribution and use in source and binary forms, with or without 62949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * modification, are permitted provided that: (1) source code distributions 72949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * retain the above copyright notice and this paragraph in its entirety, (2) 82949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * distributions including binary code include the above copyright notice and 92949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * this paragraph in its entirety in the documentation or other materials 102949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * provided with the distribution, and (3) all advertising materials mentioning 112949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * features or use of this software display the following acknowledgement: 122949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * ``This product includes software developed by the University of California, 132949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 142949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * the University nor the names of its contributors may be used to endorse 152949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * or promote products derived from this software without specific prior 162949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * written permission. 172949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 182949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 192949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 202949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * 212949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Format and print trivial file transfer protocol packets. 222949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project */ 232949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 242949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#ifndef lint 252949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projectstatic const char rcsid[] _U_ = 2653f17a9db278d33517d9888dd77848f554522a38JP Abgrall "@(#) $Header: /tcpdump/master/tcpdump/print-tftp.c,v 1.39 2008-04-11 16:47:38 gianluca Exp $ (LBL)"; 272949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#endif 282949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 292949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#ifdef HAVE_CONFIG_H 302949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include "config.h" 312949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#endif 322949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 332949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <tcpdump-stdinc.h> 342949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 352949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#ifdef SEGSIZE 362949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#undef SEGSIZE /* SINIX sucks */ 372949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#endif 382949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 392949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <stdio.h> 402949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include <string.h> 412949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 422949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include "interface.h" 432949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include "addrtoname.h" 442949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include "extract.h" 452949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project#include "tftp.h" 462949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 472949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* op code to string mapping */ 4853f17a9db278d33517d9888dd77848f554522a38JP Abgrallstatic const struct tok op2str[] = { 492949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { RRQ, "RRQ" }, /* read request */ 502949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { WRQ, "WRQ" }, /* write request */ 512949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { DATA, "DATA" }, /* data packet */ 522949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { ACK, "ACK" }, /* acknowledgement */ 5353f17a9db278d33517d9888dd77848f554522a38JP Abgrall { TFTP_ERROR, "ERROR" }, /* error code */ 542949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { OACK, "OACK" }, /* option acknowledgement */ 552949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { 0, NULL } 562949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project}; 572949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 582949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* error code to string mapping */ 5953f17a9db278d33517d9888dd77848f554522a38JP Abgrallstatic const struct tok err2str[] = { 602949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { EUNDEF, "EUNDEF" }, /* not defined */ 612949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { ENOTFOUND, "ENOTFOUND" }, /* file not found */ 622949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { EACCESS, "EACCESS" }, /* access violation */ 632949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */ 642949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { EBADOP, "EBADOP" }, /* illegal TFTP operation */ 652949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { EBADID, "EBADID" }, /* unknown transfer ID */ 662949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { EEXISTS, "EEXISTS" }, /* file already exists */ 672949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { ENOUSER, "ENOUSER" }, /* no such user */ 682949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project { 0, NULL } 692949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project}; 702949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 712949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project/* 722949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project * Print trivial file transfer program requests 732949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project */ 742949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projectvoid 752949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projecttftp_print(register const u_char *bp, u_int length) 762949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project{ 772949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register const struct tftphdr *tp; 782949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register const char *cp; 792949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register const u_char *p; 802949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project register int opcode, i; 812949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project static char tstr[] = " [|tftp]"; 822949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 832949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project tp = (const struct tftphdr *)bp; 842949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 852949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print length */ 862949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project printf(" %d", length); 872949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 882949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print tftp request type */ 892949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project TCHECK(tp->th_opcode); 902949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project opcode = EXTRACT_16BITS(&tp->th_opcode); 912949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project cp = tok2str(op2str, "tftp-#%d", opcode); 922949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project printf(" %s", cp); 932949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Bail if bogus opcode */ 942949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (*cp == 't') 952949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project return; 962949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 972949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project switch (opcode) { 982949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 992949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project case RRQ: 1002949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project case WRQ: 1012949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project case OACK: 1022949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project p = (u_char *)tp->th_stuff; 1032949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project putchar(' '); 1042949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print filename or first option */ 1052949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (opcode != OACK) 1062949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project putchar('"'); 1072949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project i = fn_print(p, snapend); 1082949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (opcode != OACK) 1092949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project putchar('"'); 1102949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 1112949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print the mode (RRQ and WRQ only) and any options */ 1122949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project while ((p = (const u_char *)strchr((const char *)p, '\0')) != NULL) { 1132949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (length <= (u_int)(p - (const u_char *)&tp->th_block)) 1142949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 1152949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project p++; 1162949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (*p != '\0') { 1172949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project putchar(' '); 1182949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project fn_print(p, snapend); 1192949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } 1202949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } 1212949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 1222949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (i) 1232949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project goto trunc; 1242949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 1252949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 1262949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project case ACK: 1272949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project case DATA: 1282949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project TCHECK(tp->th_block); 1292949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project printf(" block %d", EXTRACT_16BITS(&tp->th_block)); 1302949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 1312949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 13253f17a9db278d33517d9888dd77848f554522a38JP Abgrall case TFTP_ERROR: 1332949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print error code string */ 1342949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project TCHECK(tp->th_code); 1352949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project printf(" %s \"", tok2str(err2str, "tftp-err-#%d \"", 1362949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project EXTRACT_16BITS(&tp->th_code))); 1372949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* Print error message string */ 1382949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project i = fn_print((const u_char *)tp->th_data, snapend); 1392949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project putchar('"'); 1402949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project if (i) 1412949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project goto trunc; 1422949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 1432949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project 1442949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project default: 1452949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project /* We shouldn't get here */ 1462949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project printf("(unknown #%d)", opcode); 1472949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project break; 1482949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project } 1492949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project return; 1502949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Projecttrunc: 1512949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project fputs(tstr, stdout); 1522949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project return; 1532949f58a438f6fd85f66a8b7ed4708042cde4b37The Android Open Source Project} 154