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Posted on 1998-06-12
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Last Modified: 2008-03-06
Here is what I want to do:  A user can log in through the internet and then enter their name and a fax number.  Then they hit a 'submit' button, and a fax gets sent to the number they entered.   How can I do this?  Is Java even the right thing to use?  Any place where I can get source code?

Thanks
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Question by:kellyjj
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Expert Comment

by:evijay
ID: 1222972
You have to write a server side CGI program (in java or in C or in Perl or in any other language) which gets executed when the user clicks submit button.
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Author Comment

by:kellyjj
ID: 1222973
So I can write it C?  Cool, ok but What do I need to know to make a C program a CGI??  
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Author Comment

by:kellyjj
ID: 1222974
So I can write it C?  Cool, ok but What do I need to know to make a C program a CGI??  
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Author Comment

by:kellyjj
ID: 1222975
So I can write it C?  Cool, ok but What do I need to know to make a C program a CGI??  
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Expert Comment

by:evijay
ID: 1222976
I am sorry for late reply,.

First you need to write a html form which accepts the user inputs. Next, attach a cgi handler for the submit
button. The template is like this

<Form method=get action="http://yourhostname/cgi-bin/cgicprogram">

. put form elements here

</Form>


Write your cgicprogram say faxit.c.
It should first get the user entered details from environment variables (using getenv and the variable name is QUERY_STRING,
parse it and then process the request).

For more info on cgi , see the following book

http://www.developer.com/reference/library/1575211513/ewtoc.html


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Author Comment

by:kellyjj
ID: 1222977
ok cool.  Lets say inside faxit.c  I have the statement system("echo 123 >123.txt");

Will this write 123 to the file 123.txt??  Or is this kind of thing allowed.
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Expert Comment

by:evijay
ID: 1222978
Yes perfectly allowed and it writes to file 123.txt

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Author Comment

by:kellyjj
ID: 1222979
ok, dude,  answer a question and the points are yours
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Author Comment

by:kellyjj
ID: 1222980
ok, here is another thought...  I can call another app from inside my CGI? Correct.  This what happens when you send e mail from a form.  What do I have to do make this happen.  I keep getting the,  invalid header.

Thanks
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Author Comment

by:kellyjj
ID: 1222981
Here is the actual error msg that is logged in our server.  What do I do to fix this?

15/Jun/1998:10:34:39] failure: for host 207.126.81.68 trying to GET /cgi-bin/faxcgi.cgi, cgi-parse-output reports: the CGI program /usr/internet/ns_httpd/httpd-80/htdocs/cgi-bin/faxcgi.cgi did not produce a valid header (name without value: got line "vsifax environment not set")

Thanks dude/dudette.
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Author Comment

by:kellyjj
ID: 1222982
actually,  I got to work.  So if you want the points you should post an answer.

kellyjj
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Accepted Solution

by:
evijay earned 30 total points
ID: 1222983
Sorry, I was out of station !!


            First you need to write a html form which accepts the user inputs. Next, attach a cgi handler for the submit
            button. The template is like this

            <Form method=get action="http://yourhostname/cgi-bin/cgicprogram">

            . put form elements here

            </Form>


            Write your cgicprogram say faxit.c.
            It should first get the user entered details from environment variables (using getenv and the variable name is
            QUERY_STRING,
            parse it and then process the request).

            For more info on cgi , see the following book

            http://www.developer.com/reference/library/1575211513/ewtoc.html
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