--- /dev/null
+0.0.1 - 10th September 1999
+
+First public release.
+
+0.0.2 - 4th December 1999
+
+* Extra error checking added (Cornelius Cook)
+* Command line options added (Cornelius Cook)
+* Added TCP module.
+* Added silent option.
+* More documentation about filtering.
+
+0.0.3 - 18th April 2000
+
+* Look change and select code added (Cornelius Cook)
+* Some socket tweaks (Cornelius Cook)
+* Started breaking out display code in preparation for ncurses version.
+* Added check for closed sockets.
--- /dev/null
+GNU GENERAL PUBLIC LICENSE
+
+ Version 2, June 1991
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+Preamble
+
+ The licenses for most software are designed to take away your freedom
+ to share and change it. By contrast, the GNU General Public License is
+ intended to guarantee your freedom to share and change free
+ software--to make sure the software is free for all its users. This
+ General Public License applies to most of the Free Software
+ Foundation's software and to any other program whose authors commit to
+ using it. (Some other Free Software Foundation software is covered by
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+
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+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
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+ notice placed by the copyright holder saying it may be distributed
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+
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+ is true depends on what the Program does.
+
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+END OF TERMS AND CONDITIONS
\ No newline at end of file
--- /dev/null
+# Makefile for sersniff
+# Copyright 1999 Jonathan McDowell for Project Purple
+
+CC = gcc
+CFLAGS += -g -Wall
+LINK = gcc
+LINKFLAGS = -g -o
+
+all : sersniff
+
+sersniff: sersniff.o tcp.o disp_basic.o
+ $(LINK) $(LINKFLAGS) sersniff sersniff.o tcp.o disp_basic.o
+
+clean :
+ rm -f *~ core *.o a.out sersniff
--- /dev/null
+sersniff 0.0.3 - A program to tunnel between 2 serial ports and show
+what's happening.
+Copyright 1999 Jonathan McDowell for Project Purple.
+http://www.earth.li/projectpurple/progs/sersniff.html
+
+
+Introduction:
+
+This program was written to aid me with the decoding of the protocol
+used by the Nokia 9000i Communicator to talk to the NServer software
+Nokia provides, which only runs under Windows. Having hastily thrown
+together the code to do what I needed it occured to me that others may
+have a use for something similiar and that having a skeleton available
+may help.
+
+(Aside: Of course, in the usual tradition of Open Source, someone got
+there before. Checkout nserver from
+http://users.globalnet.co.uk/~syrinx/ if your interested in the Nokia
+stuff.)
+
+I feel that the concept could be taken a lot further, with various
+filters and so on being constructed (given a framework in which to
+construct them) similiar to that available with ethernet sniffers. This
+could aid with the disassembly of unknown protocols over serial lines or
+even for debugging serial connections. Maybe I'll write this code
+someday, maybe not. Maybe someone else will and will send me a patch. :)
+
+
+Command line options:
+
+sersniff [-h] [-i DEVICE | -l PORT] [-o DEVICE | -c HOST:PORT] [-b BAUD] [-s]
+
+-h
+ Displays some command line option help.
+
+-i IN_DEV
+ Set the device to use for Port1, if you're using serial ports.
+ Default of /dev/ttyS0
+
+-l PORT
+ Set the port to listen on, if you want Port1 to be a TCP socket.
+
+-o OUT_DEV
+ Set the device to use for Port2, if you're using serial ports.
+ Default of /dev/ttyS1
+
+-c HOST:PORT
+ Specify the host and port to connect to if Port2 is to be a TCP
+ socket.
+
+-b BAUD
+ Specify baud rate for serial connections. Defaults to 19200.
+
+-s
+ Make sersniff not copy data between the two ports - useful if a
+ Y cable is being used for serial port sniffing for example.
+
+
+TCP/serial things:
+
+This program was originally written to cope with serial port data. I
+have added simple support for a TCP connection both to aid with
+development (it's a /lot/ easier for me to generate TCP streams than
+serial streams) and also because I think a lot of the things that are
+useful for monitoring a serial port data stream can also be applied to
+TCP. Taking this further leads to thinking about UDP/raw ethernet - I'll
+think about it once I get some filtering stuff in.
+
+The TCP stuff does a simple listen on a port and then connects to the
+host/port specified. I see no reason why it couldn't be used to allow
+telneting to a serial port or connecting from a serial port to a TCP
+port, but I haven't tested this.
+
+
+Filtering:
+
+This is a definite to do. For example, let's assume a regex based
+scheme. We could implement the current filter as something like:
+
+/\x0A/ <LF>
+/\x0D/ <CR>
+/\x1B/ <ESC>
+/./ .
+
+(Yeah, ok, I need to think about syntax. This doesn't cover the < 32 or
+> 127 range)
+
+But then say we learn a bit about our protocol? Let's assume VT100 for a
+moment, then we might want:
+
+/\x0A/ <LF>
+/\x0D/ <CR>
+/\x1B/ <ESC>
+/\x1B[2J/ <Screen Clear>
+/\x1B[0m/ <Attribute Reset>
+/\0x7/ <BEL>
+/./ .
+
+Now that's more useful, isn't it? And if it came with filters for common
+serial protocols, that might be useful too? Say a VT100 one, a PPP one,
+a UUCP one, well, you get the idea hopefully.
+
+Anyway, this is a major to do. Just needs me to get a round tuit and
+think about syntax.
+
+
+Development system:
+
+sersniff was originally written under Linux on a 486dx2-66. It is
+currently being worked on under FreeBSD on a Cyrix P233+.
+
+
+Contacting the author:
+
+I can be reached as noodles@earth.li or on Fidonet as Jonathan McDowell
+@ 2:443/21
+
+All constructive criticism about sersniff is welcome.
+
+
+License:
+
+sersniff is distributed under the GNU Public License, a copy of which
+should have been provided with this archive as LICENSE.
--- /dev/null
+* Make configurable (serial port, speed, flow control etc)
+ Partly done by Cornelius Cook.
+
+* Add option to dump to file and display status on screen.
+
+* Nicer way to terminate program than Ctrl-C/KILLing it.
+
+* Lock serial ports.
+
+* Add filtering rules capability.
+ Perhaps look at some regex libraries?
--- /dev/null
+/*
+ disp_basic.c - Routines to do basic output with no fanciness.
+ Copyright 2000 Project Purple. Written by Jonathan McDowell
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ http://www.gnu.org/copyleft/gpl.html
+
+ 17/02/2000 - Started writing.
+*/
+
+#include <stdio.h>
+
+#include "disp_basic.h"
+
+/* Which port did we display last? */
+static int last=-1;
+/* Count of chars so far this line */
+static int wrap=WRAPINIT;
+
+
+/* Initialise the display, ie do nothing */
+int disp_init()
+{
+ return 0;
+}
+
+/* Close the display, ie do nothing */
+int disp_close()
+{
+ return 0;
+}
+
+/* Output a status string about what's happening */
+void disp_outputstatus(char *string)
+{
+ printf("\n%s\n\t", string);
+ last=-1;
+ wrap=WRAPINIT;
+}
+
+/* Output a string from the port. */
+void disp_outputstr(int port, char *string,
+ long usec_threshold, long usec_waited)
+{
+ if (usec_waited>usec_threshold) {
+ /* report how long we waited between the last port */
+ if (wrap!=WRAPINIT) printf("\n");
+ printf("\t<waited %0ld.%0ld seconds>\n",
+ usec_waited / USEC,
+ usec_waited % USEC);
+ wrap=WRAPINIT;
+ }
+
+ if (last!=port) {
+ /* If we didn't just send a CR, we need to now */
+ if (wrap!=WRAPINIT) printf("\n");
+ printf("\nPort%d:\t", port);
+ last=port;
+ wrap=WRAPINIT;
+ } else if (wrap==WRAPINIT) {
+ /* We should indent since we're continuing the same port
+ as last time */
+ printf("\t");
+ }
+
+ /* If we'd go over the line end, wrap */
+ if (strlen(string)+wrap > SCREEN_WIDTH) {
+ wrap=WRAPINIT;
+ printf("\n\t");
+ }
+
+ wrap+=strlen(string);
+ printf("%s", string);
+
+ if (wrap % SCREEN_WIDTH == 0) {
+ /* we hit the edge of the screen */
+ wrap=WRAPINIT;
+ printf("\n");
+ }
+
+ /* flush all the time */
+ fflush(NULL);
+}
--- /dev/null
+/*
+ disp_basic.h - Routines to do basic output with no fanciness.
+ Copyright 2000 Project Purple. Written by Jonathan McDowell
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ http://www.gnu.org/copyleft/gpl.html
+
+ 17/02/2000 - Started writing.
+*/
+
+/* where to start wrap counts (needs to include "PortX:\t") */
+#define WRAPINIT 9
+/* Screen width */
+#define SCREEN_WIDTH 80
+#define USEC 1000000
+
+/* Initialise the display, ie do nothing */
+int disp_init();
+
+/* Close the display, ie do nothing */
+int disp_close();
+
+/* Output a status string about what's happening */
+void disp_outputstatus(char *string);
+
+/* Output a string from the port. */
+void disp_outputstr(int port, char *string,
+ long usec_threshold, long usec_waited);
+
--- /dev/null
+/*
+ disp_ncurses.c - Routines to do pretty ncurses output.
+ Copyright 2000 Project Purple. Written by Jonathan McDowell
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ http://www.gnu.org/copyleft/gpl.html
+
+ 17/02/2000 - Started writing.
+*/
+
+#include <stdio.h>
+#include <ncurses.h>
+
+#include "disp_ncurses.h"
+
+/* Which port did we display last? */
+static int last=-1;
+/* Count of chars so far this line */
+static int wrap=WRAPINIT;
+
+
+/* Initialise the display */
+int disp_init()
+{
+ return 0;
+}
+
+/* Close the display */
+int disp_close()
+{
+ return 0;
+}
+
+/* Output a status string about what's happening */
+void disp_outputstatus(char *string)
+{
+ printf("\n%s\n\t", string);
+ last=-1;
+ wrap=WRAPINIT;
+}
+
+/* Output a string from the port. */
+void disp_outputstr(int port, char *string,
+ long usec_threshold, long usec_waited)
+{
+ if (usec_waited>usec_threshold) {
+ /* report how long we waited between the last port */
+ if (wrap!=WRAPINIT) printf("\n");
+ printf("\t<waited %0ld.%0ld seconds>\n",
+ usec_waited / USEC,
+ usec_waited % USEC);
+ wrap=WRAPINIT;
+ }
+
+ if (last!=port) {
+ /* If we didn't just send a CR, we need to now */
+ if (wrap!=WRAPINIT) printf("\n");
+ printf("\nPort%d:\t", port);
+ last=port;
+ wrap=WRAPINIT;
+ } else if (wrap==WRAPINIT) {
+ /* We should indent since we're continuing the same port
+ as last time */
+ printf("\t");
+ }
+
+ /* If we'd go over the line end, wrap */
+ if (strlen(string)+wrap > SCREEN_WIDTH) {
+ wrap=WRAPINIT;
+ printf("\n\t");
+ }
+
+ wrap+=strlen(string);
+ printf("%s", string);
+
+ if (wrap % SCREEN_WIDTH == 0) {
+ /* we hit the edge of the screen */
+ wrap=WRAPINIT;
+ printf("\n");
+ }
+
+ /* flush all the time */
+ fflush(NULL);
+}
--- /dev/null
+/*
+ disp_ncurses.h - Routines to do pretty ncurses output.
+ Copyright 2000 Project Purple. Written by Jonathan McDowell
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ http://www.gnu.org/copyleft/gpl.html
+
+ 17/02/2000 - Started writing.
+*/
+
+/* where to start wrap counts (needs to include "PortX:\t") */
+#define WRAPINIT 9
+/* Screen width */
+#define SCREEN_WIDTH 80
+#define USEC 1000000
+
+/* Initialise the display, ie do nothing */
+int disp_init();
+
+/* Close the display, ie do nothing */
+int disp_close();
+
+/* Output a status string about what's happening */
+void disp_outputstatus(char *string);
+
+/* Output a string from the port. */
+void disp_outputstr(int port, char *string,
+ long usec_threshold, long usec_waited);
+
--- /dev/null
+/*
+ sersniff.c - A program to tunnel between 2 serial ports and
+ sniff the data that passes between them. Designed to aid
+ working out the protocol between a Nokia 9000i and NServer.
+ Written by Jonathan McDowell for Project Purple, 1999
+ Extra stuff by Cornelius Cook (cook@cpoint.net), 1999
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software Foundation
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ http://www.gnu.org/copyleft/gpl.html
+
+ 07/09/1999 - Started writing.
+ 21Nov1999 - Cook: added command line support and extra error checking
+ 27Nov1999 - Cook: added select, timer & changed output look
+*/
+
+#define VERSION "0.0.3"
+
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <time.h>
+#include <sys/time.h>
+#include <errno.h>
+
+#include "disp_basic.h"
+#include "tcp.h"
+
+char * speed_str[] = { "300", "1200", "2400", "4800", "9600", "19200", "38400",
+ "57600", "115200", "230400", NULL };
+speed_t speed_num[] = { B300, B1200, B2400, B4800, B9600, B19200, B38400,
+ B57600, B115200, B230400, B0 };
+
+int openport(const char *device, speed_t baud)
+{
+ int filedes;
+ struct termios serparams;
+
+ if ((filedes=open(device, O_RDWR | O_NONBLOCK))==-1) {
+ /* Can't open device */
+ fprintf(stderr,"%s: ",device);
+ perror(device);
+ exit(1);
+ }
+
+ bzero(&serparams, sizeof(serparams));
+
+ serparams.c_cflag=baud | CLOCAL | CS8 | CREAD;
+
+ if (tcflush(filedes, TCIFLUSH)) {
+ fprintf(stderr,"%s: ",device);
+ perror("tcflush");
+ exit(1);
+ }
+ if (tcsetattr(filedes, TCSANOW, &serparams)) {
+ fprintf(stderr,"%s: ",device);
+ perror("tcsetattr");
+ exit(1);
+ }
+
+ return filedes;
+}
+
+int closeport(int filedes)
+{
+ /* Should remove any locks at this point */
+ return close(filedes);
+}
+
+/*
+ this returns the string for the character passed to it
+ It could be expanded in the future to maybe to string recognitions?
+*/
+char *chardecide(unsigned char c, int alpha) {
+ static char result[256];
+
+ /* everyone should take up 5 characters */
+ if (alpha) {
+ if ((c < 32) | (c > 126)) {
+ switch (c) {
+ case 10:
+ sprintf(result,"<LF>");
+ break;
+ case 13:
+ sprintf(result,"<CR>");
+ break;
+ case 27:
+ sprintf(result,"<ESC>");
+ break;
+ default:
+ snprintf(result,256,"<%02hX>",c);
+ break;
+ }
+ } else {
+ snprintf(result,256,"%c",c);
+ }
+ } else {
+ snprintf(result,256,"0x%02hX ",c);
+ }
+ return result;
+}
+
+void outputchar(unsigned char c, int port, int alpha,
+ long usec_threshold, long usec_waited)
+{
+ char *todisplay;
+
+ todisplay=chardecide(c,alpha);
+ disp_outputstr(port, todisplay, usec_threshold, usec_waited);
+}
+
+void mainloop(int port1, int port2, int silent, int alpha, long usec_threshold)
+{
+ unsigned char c1, c2;
+ int last;
+ int rc;
+ fd_set rfds;
+ fd_set efds;
+ int biggestfd=0;
+ int fdret;
+ struct timeval before;
+ struct timeval after;
+ long timediff;
+ int quit=0;
+
+ /* need the largest fd for the select call */
+ biggestfd=port1 > port2 ? port1 : port2;
+ biggestfd++;
+ last=0;
+
+ while (!quit) {
+ /* reset the select set */
+ FD_ZERO(&rfds);
+ FD_ZERO(&efds);
+ FD_SET(port1,&rfds);
+ FD_SET(port1,&efds);
+ FD_SET(port2,&rfds);
+ FD_SET(port2,&efds);
+
+ if (gettimeofday(&before,NULL)) {
+ perror("gettimeofday");
+ exit(1);
+ }
+ if ((fdret=select(biggestfd, &rfds, NULL, &efds, NULL))<0) {
+ perror("select");
+ exit(1);
+ }
+ if (gettimeofday(&after,NULL)) {
+ perror("gettimeofday");
+ exit(1);
+ }
+
+ /* get seconds difference */
+ timediff=after.tv_sec-before.tv_sec;
+ /* convert to micro seconds */
+ timediff*=USEC;
+ /* add difference in usecs */
+ timediff+=after.tv_usec-before.tv_usec;
+
+ if (FD_ISSET(port1, &rfds)) {
+ for (rc=read(port1, &c1, 1);
+ rc>0; rc=read(port1, &c1, 1) ) {
+ outputchar(c1,1,alpha,usec_threshold,timediff);
+ timediff=0;
+ if (!silent) write(port2,&c1,1);
+ }
+ if (rc==0) {
+ /* EOF? */
+ quit=1;
+ }
+ if (rc<0 && errno!=EAGAIN) {
+ perror("read(port1)");
+ exit(1);
+ }
+ }
+
+ if (FD_ISSET(port2, &rfds)) {
+ for (rc=read(port2, &c2, 1);
+ rc>0; rc=read(port2, &c2, 1) ) {
+ outputchar(c2,2,alpha,usec_threshold,timediff);
+ timediff=0;
+ if (!silent) write(port1,&c2,1);
+ }
+ if (rc==0) {
+ /* EOF? */
+ quit=1;
+ }
+ if (rc<0 && errno!=EAGAIN) {
+ perror("read(port2)");
+ exit(1);
+ }
+ }
+
+ /* check for exceptions (sockets closed, broken, etc) */
+ if (FD_ISSET(port1, &efds)) {
+ /* I can't remember right now what to actually
+ check for on a fd exception, so we'll just quit */
+ fprintf(stderr,"\nException on port1\n");
+ quit=1;
+ }
+ if (FD_ISSET(port2, &efds)) {
+ /* I can't remember right now what to actually
+ check for on a fd exception, so we'll just quit */
+ fprintf(stderr,"\nException on port2\n");
+ quit=1;
+ }
+ }
+
+ closeport(port2);
+ closeport(port1);
+}
+
+void usage()
+{
+ fprintf(stderr,"sersniff v%s
+
+Usage:
+sersniff [-h] [-i DEV | -l PORT] [-o DEV | -c HOST:PORT] [-b BAUD] [-w USEC]
+-h This help
+-x Show hex characters instead of alpha
+-i DEVICE Port 1 device (defaults to /dev/ttyS0)
+-l PORT Port 1 port for TCP
+-o DEVICE Port 2 device (defaults to /dev/ttyS1)
+-c HOST:PORT Port 2 host & port to connect to
+-b BAUD Baud rate (Defaults to 19200)
+-w USECS How many microsecs to wait before reporting a delay
+ (default is %d)
+-s Silent - don't pass data from port1 <=> port2,
+ just display what we see from them.
+",VERSION,USEC);
+ exit(1);
+}
+
+int main(int argc, char *argv[])
+{
+ int optret, speed;
+ int port1, port2;
+ char *dev1=NULL;
+ char *dev2=NULL;
+ int listenport=0;
+ int connectport;
+ char *connecthost=NULL, *tmpchr=NULL;
+ int show_alpha=1;
+ speed_t baud=B0;
+ int silent=0;
+ long usec_threshold=USEC;
+
+ while ((optret=getopt(argc,argv,"hxsi:l:o:c:b:w:"))!=EOF) {
+ switch (optret) {
+ case '?': case 'h': case ':':
+ usage();
+ case 's':
+ silent=1;
+ break;
+ case 'w':
+ usec_threshold=atoi(optarg);
+ break;
+ case 'i':
+ dev1=strdup(optarg);
+ break;
+ case 'o':
+ dev2=strdup(optarg);
+ break;
+ case 'l':
+ listenport=atoi(optarg);
+ break;
+ case 'c':
+ if ((tmpchr=strchr(optarg, ':'))==NULL) {
+ printf("Must specify -c option with host:port\n");
+ exit(1);
+ }
+ *tmpchr='\0';
+ connectport=atoi(++tmpchr);
+ connecthost=strdup(optarg);
+ break;
+ case 'x':
+ show_alpha=0;
+ break;
+ case 'b':
+ for (speed=0;
+ speed_str[speed];
+ speed++) {
+ if (strstr(optarg,speed_str[speed])==optarg) {
+ baud=speed_num[speed];
+ break;
+ }
+ }
+ if (baud==B0) {
+ fprintf(stderr,"Unsupported Baud: '%s'\n",
+ optarg);
+ exit(1);
+ }
+ break;
+ }
+ }
+
+ /* Default settings */
+ if (!dev1 && !listenport) dev1=strdup("/dev/ttyS0");
+ if (!dev2 && !connecthost) dev2=strdup("/dev/ttyS1");
+ if (baud==B0) baud=B19200;
+
+ disp_init();
+ if (dev1) {
+ port1=openport(dev1, baud);
+ } else {
+ disp_outputstatus("Waiting for connection to TCP port.");
+ port1=listensock(listenport);
+ }
+
+ if (dev2) {
+ port2=openport(dev2, baud);
+ } else {
+ disp_outputstatus("Connecting to TCP port.");
+ port2=opensock(connecthost, connectport);
+ }
+
+ if (port1 < 0 || port2 < 0) {
+ fprintf(stderr,"Argh. An open failed!\n");
+ exit(1);
+ }
+
+ mainloop(port1, port2, silent, show_alpha, usec_threshold);
+
+ /* Clean up */
+ if (dev1) free(dev1);
+ if (dev2) free(dev2);
+ if (connecthost) free(connecthost);
+ disp_close();
+
+ return 0;
+}
--- /dev/null
+/*
+ tcp.c - Routines to give us handles to tcp ports.
+ Copyright 1999 Project Purple. Written by Jonathan McDowell
+
+ 27/11/1999 - Started writing.
+*/
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+int opensock(char *host, int port)
+{
+ int sock;
+ struct sockaddr_in saddr;
+ struct hostent *hoste;
+
+ if ((hoste=gethostbyname(host))==NULL) {
+ perror("gethostbyname()");
+ return -1;
+ }
+
+ if ((sock=socket(AF_INET, SOCK_STREAM, 0))==-1) {
+ perror("socket()");
+ return -1;
+ }
+
+ saddr.sin_addr = *(struct in_addr *) hoste->h_addr;
+ saddr.sin_family = AF_INET;
+ saddr.sin_port = htons(port);
+
+ if ((connect(sock, (struct sockaddr *) &saddr, sizeof(struct sockaddr_in)))==-1) {
+ perror("connect()");
+ return -1;
+ }
+
+ if (fcntl(sock, F_SETFL, O_NONBLOCK)==-1) {
+ perror("fcntl()");
+ return -1;
+ }
+
+ return sock;
+}
+
+int listensock(int port)
+{
+ int sock, newsock;
+ struct sockaddr_in saddr;
+ int saddrlen;
+ int on;
+
+ if ((sock=socket(AF_INET, SOCK_STREAM, 0))==-1) {
+ perror("socket()");
+ return -1;
+ }
+
+ on=1;
+ if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))) {
+ perror("setsockopt(SO_REUSEADDR)");
+ return -1;
+ }
+
+ saddr.sin_addr.s_addr = INADDR_ANY;
+ saddr.sin_family = AF_INET;
+ saddr.sin_port = htons(port);
+ saddrlen = sizeof(saddr);
+
+ if (bind(sock, (struct sockaddr *) &saddr, saddrlen)==-1) {
+ perror("bind()");
+ return -1;
+ }
+
+ if (listen(sock, 0)==-1) {
+ perror("listen()");
+ return -1;
+ }
+
+ if ((newsock=accept(sock, (struct sockaddr *) &saddr, &saddrlen))==-1) {
+ perror("accept()");
+ return -1;
+ }
+
+ if (fcntl(newsock, F_SETFL, O_NONBLOCK)==-1) {
+ perror("fcntl()");
+ return -1;
+ }
+
+ close(sock);
+
+ return newsock;
+}
--- /dev/null
+/*
+ tcp.h - Routines to give us handles to tcp ports.
+ Copyright 1999 Project Purple. Written by Jonathan McDowell
+
+ 27/11/1999 - Started writing.
+*/
+
+#ifndef __TCP_H_
+#define __TCP_H_
+
+int opensock(char *host, int port);
+int listensock(int port);
+
+#endif __TCP_H_
projects / sersniff.git / commitdiff