diff options
Diffstat (limited to 'usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_tftp.c')
| -rw-r--r-- | usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_tftp.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_tftp.c b/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_tftp.c new file mode 100644 index 0000000..2196454 --- /dev/null +++ b/usr/src/cmd/cmd-inet/usr.sbin/snoop/snoop_tftp.c @@ -0,0 +1,178 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2005 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <fcntl.h> +#include <arpa/tftp.h> +#include "snoop.h" + +extern char *dlc_header; +char *tftperror(); +char *show_type(); + +int +interpret_tftp(int flags, struct tftphdr *tftp, int fraglen) +{ + char *name, *mode; + extern int src_port, dst_port; + int blocksize = fraglen - 4; + + switch (ntohs(tftp->th_opcode)) { + case RRQ: + case WRQ: + add_transient(src_port, interpret_tftp); + break; + case ERROR: + del_transient(src_port); + break; + } + + if (flags & F_SUM) { + switch (ntohs(tftp->th_opcode)) { + case RRQ: + name = (char *)&tftp->th_stuff; + mode = name + (strlen(name) + 1); + (void) sprintf(get_sum_line(), + "TFTP Read \"%s\" (%s)", name, mode); + break; + case WRQ: + name = (char *)&tftp->th_stuff; + mode = name + (strlen(name) + 1); + (void) sprintf(get_sum_line(), + "TFTP Write \"%s\" (%s)", name, mode); + break; + case DATA: + (void) sprintf(get_sum_line(), + "TFTP Data block %d (%d bytes)%s", + ntohs(tftp->th_block), + blocksize, + blocksize < 512 ? " (last block)":""); + break; + case ACK: + (void) sprintf(get_sum_line(), + "TFTP Ack block %d", + ntohs(tftp->th_block)); + break; + case ERROR: + (void) sprintf(get_sum_line(), + "TFTP Error: %s", + tftperror(ntohs(tftp->th_code))); + break; + } + } + + if (flags & F_DTAIL) { + + show_header("TFTP: ", "Trivial File Transfer Protocol", fraglen); + show_space(); + (void) sprintf(get_line((char *)(uintptr_t)tftp->th_opcode - + dlc_header, 2), + "Opcode = %d (%s)", + ntohs(tftp->th_opcode), + show_type(ntohs(tftp->th_opcode))); + + switch (ntohs(tftp->th_opcode)) { + case RRQ: + case WRQ: + name = (char *)&tftp->th_stuff; + mode = name + (strlen(name) + 1); + (void) sprintf( + get_line(name - dlc_header, strlen(name) + 1), + "File name = \"%s\"", + name); + (void) sprintf( + get_line(mode - dlc_header, strlen(mode) + 1), + "Transfer mode = %s", + mode); + break; + + case DATA: + (void) sprintf( + get_line((char *)(uintptr_t)tftp->th_block - + dlc_header, 2), "Data block = %d%s", + ntohs(tftp->th_block), + blocksize < 512 ? " (last block)":""); + (void) sprintf(get_line((char *)(uintptr_t)tftp->th_data - + dlc_header, blocksize), + "[ %d bytes of data ]", + blocksize); + break; + + case ACK: + (void) sprintf(get_line((char *)(uintptr_t)tftp->th_block - + dlc_header, 2), "Acknowledge block = %d", + ntohs(tftp->th_block)); + break; + + case ERROR: + (void) sprintf(get_line((char *)(uintptr_t)tftp->th_code - + dlc_header, 2), "Error = %d (%s)", + ntohs(tftp->th_code), + tftperror(ntohs(tftp->th_code))); + (void) sprintf(get_line((char *)(uintptr_t)tftp->th_data - + dlc_header, strlen(tftp->th_data) + 1), + "Error string = \"%s\"", tftp->th_data); + } + } + + return (fraglen); +} + +char * +show_type(t) + int t; +{ + switch (t) { + case RRQ: return ("read request"); + case WRQ: return ("write request"); + case DATA: return ("data packet"); + case ACK: return ("acknowledgement"); + case ERROR: return ("error"); + } + return ("?"); +} + +char * +tftperror(code) + unsigned short code; +{ + static char buf[128]; + + switch (code) { + case EUNDEF: return ("not defined"); + case ENOTFOUND: return ("file not found"); + case EACCESS: return ("access violation"); + case ENOSPACE: return ("disk full or allocation exceeded"); + case EBADOP: return ("illegal TFTP operation"); + case EBADID: return ("unknown transfer ID"); + case EEXISTS: return ("file already exists"); + case ENOUSER: return ("no such user"); + } + (void) sprintf(buf, "%d", code); + + return (buf); +} |