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Possible fixed identd
From: prj () NLS NET (Phillip R. Jaenke)
Date: Wed, 13 Aug 1997 21:05:51 -0400


Moving right along, ahead of schedule..

Submitted for your approval and testing, a slightly modified identd.

Please note, this is UNTESTED as of 09:13 EDT, Wednesday, August 13th.
I'm currently swamped, but will be attempting to run a few tests today.

Compiles cleanly on Linux.

[root () maezw /root]# gcc -Wall -O3 -m486 identd.c -o identd
[root () maezw /root]#

Any contributions, ideas, suggestions, please email me privately. If
you have an OS that it does NOT compile on, and you create a fix or
patch, please share with the entire list. Thanks, and enjoy! :)

--------8<---cut here--->8---------

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <ctype.h>
#include <string.h>

int writeranduser(void)
{
        int r;
        char username[12];
        srandom(getpid());
        memset(username, 0, 12);
        r = random() % 26;
        r = r + 'a';
        memset(username, r, 11);
        if(write(1, username, strlen(username)) < strlen(username))
                exit(0);
        return 1;
}

int main(int argc, char **argv)
{
        char genrandomuser = 1;
        char *portpair = NULL;
        fd_set rset;
        struct timeval tv;
        int i;

        if(argc > 1) genrandomuser = 0;
        portpair = malloc(1024);
        if(!portpair)
                exit(0);
        memset(portpair, 0, 1024);
        tv.tv_sec = 180;
        tv.tv_usec = 0;
        FD_ZERO(&rset);
        FD_SET(0, &rset);
        i = select(1, &rset, NULL, NULL, &tv);
        if(i < 1)
                exit(0);
        if(read(0, portpair, 512) < 1)
                exit(0);
        while(*portpair)
        {
                if(isdigit(*portpair))
                        if(write(1, portpair, 1) < 0)
                                exit(0);
                        else;
                else if(*portpair == ',')
                        if(write(1, portpair, 1) < 0)
                                exit(0);
                        else;
                portpair++;
        }
        if(write(1, " : USERID : UNIX : ", 19) < 19)
                exit(0);
        if(!genrandomuser)
                if(write(1, argv[1], strlen(argv[1])) < strlen(argv[1]))
                        exit(0);
                else;
        else
                writeranduser();
        if(write(1, "\r\n", 2) < 2)
                exit(0);
        return 1;
}


-Phillip R. Jaenke  (InterNIC Handle: PRJ5)  [prj () NLS NET]
UNIX Systems Administration, Management, and Technical Support,
NetLink Services, Inc. (216/468.5100 - sales () nls net - www.nls.net)
"People disagree with me.  I just ignore them."  -- Linus Torvalds
-RC5- Team Nightmare (ARRRRRRRRGH!! We lost our webserver. AGAIN!)
              "RC5 - DES Was Too Easy!" -- [i386] @ IRC



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