| | 1 | /* |
| | 2 | * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997 |
| | 3 | * The Regents of the University of California. All rights reserved. |
| | 4 | * |
| | 5 | * Redistribution and use in source and binary forms, with or without |
| | 6 | * modification, are permitted provided that: (1) source code distributions |
| | 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| | 8 | * distributions including binary code include the above copyright notice and |
| | 9 | * this paragraph in its entirety in the documentation or other materials |
| | 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| | 11 | * features or use of this software display the following acknowledgement: |
| | 12 | * ``This product includes software developed by the University of California, |
| | 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| | 14 | * the University nor the names of its contributors may be used to endorse |
| | 15 | * or promote products derived from this software without specific prior |
| | 16 | * written permission. |
| | 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| | 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| | 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| | 20 | * |
| | 21 | * Format and print trivial file transfer protocol packets. |
| | 22 | */ |
| | 23 | |
| | 24 | #ifndef lint |
| | 25 | static const char rcsid[] _U_ = |
| | 26 | "@(#) $Header: /tcpdump/master/tcpdump/print-tftp.c,v 1.38.2.1 2008-04-11 16:44:17 gianluca Exp $ (LBL)"; |
| | 27 | #endif |
| | 28 | |
| | 29 | #ifdef HAVE_CONFIG_H |
| | 30 | #include "config.h" |
| | 31 | #endif |
| | 32 | |
| | 33 | #include <tcpdump-stdinc.h> |
| | 34 | |
| | 35 | #ifdef SEGSIZE |
| | 36 | #undef SEGSIZE /* SINIX sucks */ |
| | 37 | #endif |
| | 38 | |
| | 39 | #include <stdio.h> |
| | 40 | #include <string.h> |
| | 41 | |
| | 42 | #include "interface.h" |
| | 43 | #include "addrtoname.h" |
| | 44 | #include "extract.h" |
| | 45 | #include "tftp.h" |
| | 46 | |
| | 47 | /* op code to string mapping */ |
| | 48 | static struct tok op2str[] = { |
| | 49 | { RRQ, "RRQ" }, /* read request */ |
| | 50 | { WRQ, "WRQ" }, /* write request */ |
| | 51 | { DATA, "DATA" }, /* data packet */ |
| | 52 | { ACK, "ACK" }, /* acknowledgement */ |
| | 53 | { TFTP_ERROR, "ERROR" }, /* error code */ |
| | 54 | { OACK, "OACK" }, /* option acknowledgement */ |
| | 55 | { 0, NULL } |
| | 56 | }; |
| | 57 | |
| | 58 | /* error code to string mapping */ |
| | 59 | static struct tok err2str[] = { |
| | 60 | { EUNDEF, "EUNDEF" }, /* not defined */ |
| | 61 | { ENOTFOUND, "ENOTFOUND" }, /* file not found */ |
| | 62 | { EACCESS, "EACCESS" }, /* access violation */ |
| | 63 | { ENOSPACE, "ENOSPACE" }, /* disk full or allocation exceeded */ |
| | 64 | { EBADOP, "EBADOP" }, /* illegal TFTP operation */ |
| | 65 | { EBADID, "EBADID" }, /* unknown transfer ID */ |
| | 66 | { EEXISTS, "EEXISTS" }, /* file already exists */ |
| | 67 | { ENOUSER, "ENOUSER" }, /* no such user */ |
| | 68 | { 0, NULL } |
| | 69 | }; |
| | 70 | |
| | 71 | /* |
| | 72 | * Print trivial file transfer program requests |
| | 73 | */ |
| | 74 | void |
| | 75 | tftp_print(register const u_char *bp, u_int length) |
| | 76 | { |
| | 77 | register const struct tftphdr *tp; |
| | 78 | register const char *cp; |
| | 79 | register const u_char *p; |
| | 80 | register int opcode, i; |
| | 81 | static char tstr[] = " [|tftp]"; |
| | 82 | |
| | 83 | tp = (const struct tftphdr *)bp; |
| | 84 | |
| | 85 | /* Print length */ |
| | 86 | printf(" %d", length); |
| | 87 | |
| | 88 | /* Print tftp request type */ |
| | 89 | TCHECK(tp->th_opcode); |
| | 90 | opcode = EXTRACT_16BITS(&tp->th_opcode); |
| | 91 | cp = tok2str(op2str, "tftp-#%d", opcode); |
| | 92 | printf(" %s", cp); |
| | 93 | /* Bail if bogus opcode */ |
| | 94 | if (*cp == 't') |
| | 95 | return; |
| | 96 | |
| | 97 | switch (opcode) { |
| | 98 | |
| | 99 | case RRQ: |
| | 100 | case WRQ: |
| | 101 | case OACK: |
| | 102 | /* |
| | 103 | * XXX Not all arpa/tftp.h's specify th_stuff as any |
| | 104 | * array; use address of th_block instead |
| | 105 | */ |
| | 106 | #ifdef notdef |
| | 107 | p = (u_char *)tp->th_stuff; |
| | 108 | #else |
| | 109 | p = (u_char *)&tp->th_block; |
| | 110 | #endif |
| | 111 | putchar(' '); |
| | 112 | /* Print filename or first option */ |
| | 113 | if (opcode != OACK) |
| | 114 | putchar('"'); |
| | 115 | i = fn_print(p, snapend); |
| | 116 | if (opcode != OACK) |
| | 117 | putchar('"'); |
| | 118 | |
| | 119 | /* Print the mode (RRQ and WRQ only) and any options */ |
| | 120 | while ((p = (const u_char *)strchr((const char *)p, '\0')) != NULL) { |
| | 121 | if (length <= (u_int)(p - (const u_char *)&tp->th_block)) |
| | 122 | break; |
| | 123 | p++; |
| | 124 | if (*p != '\0') { |
| | 125 | putchar(' '); |
| | 126 | fn_print(p, snapend); |
| | 127 | } |
| | 128 | } |
| | 129 | |
| | 130 | if (i) |
| | 131 | goto trunc; |
| | 132 | break; |
| | 133 | |
| | 134 | case ACK: |
| | 135 | case DATA: |
| | 136 | TCHECK(tp->th_block); |
| | 137 | printf(" block %d", EXTRACT_16BITS(&tp->th_block)); |
| | 138 | break; |
| | 139 | |
| | 140 | case TFTP_ERROR: |
| | 141 | /* Print error code string */ |
| | 142 | TCHECK(tp->th_code); |
| | 143 | printf(" %s \"", tok2str(err2str, "tftp-err-#%d \"", |
| | 144 | EXTRACT_16BITS(&tp->th_code))); |
| | 145 | /* Print error message string */ |
| | 146 | i = fn_print((const u_char *)tp->th_data, snapend); |
| | 147 | putchar('"'); |
| | 148 | if (i) |
| | 149 | goto trunc; |
| | 150 | break; |
| | 151 | |
| | 152 | default: |
| | 153 | /* We shouldn't get here */ |
| | 154 | printf("(unknown #%d)", opcode); |
| | 155 | break; |
| | 156 | } |
| | 157 | return; |
| | 158 | trunc: |
| | 159 | fputs(tstr, stdout); |
| | 160 | return; |
| | 161 | } |
projects / dragonfly.git / blame_incremental