Bugtraq mailing list archives
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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