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Diffstat (limited to 'mdk-stage1/ppp/scripts/chatchat')
| -rw-r--r-- | mdk-stage1/ppp/scripts/chatchat/README | 134 | ||||
| -rw-r--r-- | mdk-stage1/ppp/scripts/chatchat/chatchat.c | 409 |
2 files changed, 0 insertions, 543 deletions
diff --git a/mdk-stage1/ppp/scripts/chatchat/README b/mdk-stage1/ppp/scripts/chatchat/README deleted file mode 100644 index 88a4c6939..000000000 --- a/mdk-stage1/ppp/scripts/chatchat/README +++ /dev/null @@ -1,134 +0,0 @@ -v 0.1 gpk@onramp.net 3/27/99 - -I Intro - - This document covers the use of the modified "chat" program and its -adjunct "chatchat" to login using the Security Dynamics SecurID card -on a linux system. - - This set of files comprises a modified version of the chat program -(the one distributed with ppp-2.3.5) and a new program called chatchat -that allows you to supply data from the keyboard to the chat program. - - The SecurID card generates passwords that have a lifetime of one -minute and are used as a first layer in dial up security. The only -software I know of for this card is for windows, so I wrote my own. -This software allows you to type in the time-sensitive password right -when your chat script is asked to supply the passcode by the remote -system. - - -II How It Works - - This version of chat his an additional command that can be put into -its options that says "Don't reply with this string. Open this pipe, -read the contents, and reply with that instead." Chatchat creates a -pipe and lets you type your passcode into it, then chat picks that up -and sends it out just as though the passcode was hardcoded into the -options. - - -III Installation - - I've provided intel binaries and source code the the modified chat -program and the chatchat program. I'll recommend that you copy the -chat.c program into your ppp-2.3.5/chat directory (save your original -chat.c program first!) and re-make it using the Makefile that comes -with chat. Copy the new chat somewhere into your path. (On my system -chat lives in /usr/sbin/chat, so I've copied the modified one into -/usr/sbin/chat.new and changed my dial in script to call chat.new -instead of chat. - - Second, compile chatchat.c and install it somewhere in your path: - - gcc -g -o chatchat chatchat.c - cp chatchat /usr/sbin - - Third, modify your chat script to use the chatchat program. Mine -looks something like this: - - - -------------------- - -#!/bin/sh -# -# This is part 2 of the ppp-on script. It will perform the connection -# protocol for the desired connection. -# use atm0 to turn down the speaker volume on my sportster x2 voice modem -# gpk 11/2/97 - -exec /usr/sbin/chat.new -V -v \ - ABORT "BUSY" \ - ABORT "NO DIAL TONE" \ - ABORT "NO ANSWER" \ - TIMEOUT 50 \ - "" "atm0" \ - OK ATDT$TELEPHONE \ - CONNECT '' \ - name: \\da0xxxxxx \ - word: @/var/tmp/p \ - compress. '' - - - ----------------------- - - This is a standard chat script: - -* abort if the modem is busy, you don't get a dial tone, no one - answers, or 50 seconds elapses. - -* use atm0 to mute the modem - -* dial the modem, when it connects, wait to be asked for account name - -* when we see "name:" prompt, delay briefly then respond with your - account name (fill in your account name) - -Now we get to the new stuff: - -* when we see "word:" in the password prompt, instead of responding - with "@/var/tmp/p", the modified chat program will open the pipe - /var/tmp/p, read the passcode out of there, and send it - -* when we see "compress." (the last word before ppp starts), reply - with nothing. The script ends and we start ppp. - -Note: - -* Make sure there is some whitespace between the filename and the \. - - -IV Usage - - To use this install the modified chat and chatchat programs, and -modify your chat script similar to the above. Before you dial in, -start that chatchat program giving it the same pipe as in your config -file. In the above case: - -chatchat /var/tmp/p - - Wait until you have one or two tick marks left on your card's -current number, then start your dial up process that eventually calls -chat. When chat goes to open and read the pipe, chatchat will prompt: - - -type PIN into SecurID card and - enter resulting passcode: - - At that point, type your PIN number into your Securid card, press -the diamond, and type the resulting numbers in as your passcode. If -you've left the -V -v options on your chat command you'll see -everything so out, otherwise it works silently. - - If you type the number wrong or run out of time, the server will -respond with an authentication failure. In that case you will have to -hang up and start again. I don't know how to build a conditional script -that says either expect "compress" next, but if you see "name:" again, -do this instead. - - -V Additional Information - - You can obtain additional information about chat and ppp from the -man pages for chat and pppd, as well as the PPP-HOWTO. - diff --git a/mdk-stage1/ppp/scripts/chatchat/chatchat.c b/mdk-stage1/ppp/scripts/chatchat/chatchat.c deleted file mode 100644 index 4534fb9e3..000000000 --- a/mdk-stage1/ppp/scripts/chatchat/chatchat.c +++ /dev/null @@ -1,409 +0,0 @@ -/* ************************************************************************* -* NAME: chatchat.c -* -* DESCRIPTION: -* -* This program creates a pipe for the chat process to read. The user -* can supply information (like a password) that will be picked up -* by chat and sent just like the regular contents of a chat script. -* -* Usage is: -* -* chatchat <filename> -* -* where <filename> matches the option given in the chat script. -* -* for instance the chat script fragment: -* -* ... -* name: \\dmyname \ -* word: @/var/tmp/p \ -* ... -* ^ -* (note: leave some whitespace after the filename) -* -* expect "name:", reply with a delay followed by "myname" -* expect "word:", reply with the data read from the pipe /var/tmp/p -* -* the matching usage of chatchat would be: -* -* chatchat /var/tmp/p -* -* eg: -* -* $chatchat /var/tmp/p -* ... -* some other process eventually starts: -* chat ... -* chat parses the "@/var/tmp/p" option and opens -* /var/tmp/p -* (chatchat prompts:) -* -* type PIN into SecurID card -* enter resulting passcode: [user inputs something] -* -* chat reads /var/tmp/p & gets what the -* user typed at chatchat's "enter string" prompt -* chat removes the pipe file -* chat sends the user's input as a response in -* place of "@/var/tmp/p" -* -* PROCESS: -* -* gcc -g -o chatchat chatchat.c -* -* -* GLOBALS: none -* -* REFERENCES: -* -* see the man pages and documentation that come with the 'chat' program -* (part of the ppp package). you will need to use the modified chat -* program that accepts the '@' operator. -* -* LIMITATIONS: -* -* REVISION HISTORY: -* -* STR Description Author -* -* 23-Mar-99 initial coding gpk -* 12-May-99 unlink the pipe after closing paulus -* -* TARGET: ANSI C -* This program is in the public domain. -* -* -* ************************************************************************* */ - - - - -#include <sys/time.h> -#include <stdio.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <string.h> - -/* MAXINPUT - the data typed into chatchat must be fewer */ -/* characters than this. */ - -#define MAXINPUT 80 - - - - - - -/* ************************************************************************* - - - NAME: main - - - USAGE: - - int argc; - char * argv[]; - - main(argc, argv[]); - - returns: int - - DESCRIPTION: - if the pipe file name is given on the command line, - create the pipe, prompt the user and put whatever - is typed into the pipe. - - returns -1 on error - else # characters entered - REFERENCES: - - LIMITATIONS: - - GLOBAL VARIABLES: - - accessed: none - - modified: none - - FUNCTIONS CALLED: - - REVISION HISTORY: - - STR Description of Revision Author - - 25-Mar-99 initial coding gpk - - ************************************************************************* */ - -int main(int argc, char * argv[]) -{ - int retval; - - int create_and_write_pipe(char * pipename); - - if (argc != 2) - { - fprintf(stderr, "usage: %s pipename\n", argv[0]); - retval = -1; - } - else - { - retval = create_and_write_pipe(argv[1]); - } - return (retval); -} - - - - -/* ************************************************************************* - - - NAME: create_and_write_pipe - - - USAGE: - - int some_int; - char * pipename; - - some_int = create_and_write_pipe(pipename); - - returns: int - - DESCRIPTION: - given the pipename, create the pipe, open it, - prompt the user for a string to put into the - pipe, write the string, and close the pipe - - on error, print out an error message and return -1 - - returns -1 on error - else #bytes written into the pipe - REFERENCES: - - LIMITATIONS: - - GLOBAL VARIABLES: - - accessed: none - - modified: none - - FUNCTIONS CALLED: - - REVISION HISTORY: - - STR Description of Revision Author - - 25-Mar-99 initial coding gpk - 12-May-99 remove pipe after closing paulus - - ************************************************************************* */ - -int create_and_write_pipe(char * pipename) -{ - int retval, created, pipefd, nread, nwritten; - char input[MAXINPUT]; - char errstring[180]; - - int create_pipe(char * pipename); - int write_to_pipe(int pipefd, char * input, int nchar); - - created = create_pipe(pipename); - - if (-1 == created) - { - sprintf(errstring, "unable to create pipe '%s'", pipename); - perror(errstring); - retval = -1; - } - else - { - - /* note: this open won't succeed until chat has the pipe */ - /* open and ready to read. this makes for nice timing. */ - - pipefd = open(pipename, O_WRONLY); - - if (-1 == pipefd) - { - sprintf(errstring, "unable to open pipe '%s'", pipename); - perror(errstring); - retval = -1; - } - else - { - fprintf(stderr, "%s \n %s", - "type PIN into SecurID card and", - "enter resulting passcode:"); - nread = read(STDIN_FILENO, (void *)input, MAXINPUT); - - - if (0 >= nread) - { - perror("unable to read from stdin"); - retval = -1; - } - else - { - /* munch off the newline character, chat supplies */ - /* a return when it sends the string out. */ - input[nread -1] = 0; - nread--; - nwritten = write_to_pipe(pipefd, input, nread); - /* printf("wrote [%d]: '%s'\n", nwritten, input); */ - retval = nwritten; - } - close(pipefd); - - /* Now make the pipe go away. It won't actually go away - completely until chat closes it. */ - if (unlink(pipename) < 0) - perror("Warning: couldn't remove pipe"); - } - } - return(retval); -} - - - - - - - -/* ************************************************************************* - - - NAME: create_pipe - - - USAGE: - - int some_int; - char * pipename; - - some_int = create_pipe(pipename); - - returns: int - - DESCRIPTION: - create a pipe of the given name - - if there is an error (like the pipe already exists) - print an error message and return - - return -1 on failure else success - - REFERENCES: - - LIMITATIONS: - - GLOBAL VARIABLES: - - accessed: none - - modified: none - - FUNCTIONS CALLED: - - REVISION HISTORY: - - STR Description of Revision Author - - 25-Mar-99 initial coding gpk - - ************************************************************************* */ - -int create_pipe(char * pipename) -{ - mode_t old_umask; - int created; - - /* hijack the umask temporarily to get the mode I want */ - /* on the pipe. */ - - old_umask = umask(000); - - created = mknod(pipename, S_IFIFO | S_IRWXU | S_IWGRP | S_IWOTH, - (dev_t)NULL); - - /* now restore umask. */ - - (void)umask(old_umask); - - if (-1 == created) - { - perror("unable to create pipe"); - } - - return(created); -} - - - - - - -/* ************************************************************************* - - - NAME: write_to_pipe - - - USAGE: - - int some_int; - int pipefd; - char * input; - int nchar; - - some_int = write_to_pipe(pipefd, input, nchar); - - returns: int - - DESCRIPTION: - write nchars of data from input to pipefd - - on error print a message to stderr - - return -1 on error, else # bytes written - REFERENCES: - - LIMITATIONS: - - GLOBAL VARIABLES: - - accessed: none - - modified: none - - FUNCTIONS CALLED: - - REVISION HISTORY: - - STR Description of Revision Author - - 25-Mar-99 initial coding gpk - 12-May-99 don't write count word first paulus - - ************************************************************************* */ - -int write_to_pipe(int pipefd, char * input, int nchar) -{ - int nwritten; - - /* nwritten = write(pipefd, (void *)&nchar, sizeof(nchar)); */ - nwritten = write(pipefd, (void *)input, nchar); - - if (-1 == nwritten) - { - perror("unable to write to pipe"); - } - - return(nwritten); -} |