Group Assignment

Team

1. Vishwanath
2. Lucas
3. Siddharth
4. Anmol

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Asana.com link : https://app.asana.com/share/vishw/cs631/1203202255113786/ac1cd1613952692d3cae622be0ecd424

Manual Page

https://stevens.netmeister.org/631/sws.1.pdf

Our Plan

1. Together : Create boilerplate code for the server
2. Then devide each segment to individual members
3. If any memeber is facing difficulty then all come together to collaborate with him

Right now for "If-Modified-Since: Mon, 18 Jul 2016 02:36:04 GMT" if the regex passes for the date type then it wouldn't really validate different time stamp.

Test Cases For CGI

1. Input given for -c is absolute ending with a / Ex: ./sws -c /home/z/sws/
2. Input given for -c is absolute ending without a / Ex: ./sws -c /home/z/sws
3. Input given for -c is relative ending with a / Ex: ./sws -c ../../../
4. Input given for -c is relative ending without a / Ex: ./sws -c ../../..
5. Input given in the user request is absolute GET /cgi-bin/hello.cgi HTTP/1.0
6. Input given in the user request is absolute and ends with "/" EX: GET /cgi-bin/hello.cgi/ HTTP/1.0
7. 6. Input given in the user request is relative GET /cgi-bin/../sws/hello.cgi/ HTTP/1.0 and ends with / -- this is a rare case and any sensible wouldn't type this so we don't serve it , try doint ls happy.c/ it will throw an error.
8. Input given in the user request is relative GET /cgi-bin/../sws/hello.cgi HTTP/1.0 and it stays inside the cgi-bin
9. Input given in the user request is relative GET /cgi-bin/../../hello.cgi HTTP/1.0 and it goes outside the cgi-bin

Crazy Things

1. If I put a relative path in CURL it will remove all dots before making the request which wasted almost 2 hours of our time.
2. Telnet fails when a large CGI is being executed.
3. If we run the server as daemon and give the working directory as '.' then the daemon is resolving it as / since it's working directory is at root.
4. For some apparent reason if we user flags.argument_path as server's working directory it is reset to null as soon as it is being passed to any function, there is no other place where we were editing that attribute, we have created a new variable in the struct with different name and assigned the same value which works flawlessly. To figure out why this is not working it almost took 2 hours of hour time :(.

Credits

1. We have used command system library source code for our CGI from System V.
2. We have used online websites like geeks for geeks in very few places where we couldn't figure out things from manual pages.

License for Command function from system v /*-

• Copyright (c) 2008 The NetBSD Foundation, Inc.
• All rights reserved.
• This code is derived from software contributed to The NetBSD Foundation
• by
• Redistribution and use in source and binary forms, with or without
• modification, are permitted provided that the following conditions
• are met:
• 1. Redistributions of source code must retain the above copyright
• notice, this list of conditions and the following disclaimer.
• 2. Redistributions in binary form must reproduce the above copyright
• notice, this list of conditions and the following disclaimer in the
• documentation and/or other materials provided with the distribution.
• THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
• ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
• TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
• PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
• BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
• CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
• SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
• INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
• CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
• ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
• POSSIBILITY OF SUCH DAMAGE. */