CGI?

Altera_Forum · ‎10-16-2004

Hello everyone:

Does the boa webserver ("pre-buit version" provided by Microtronix) support CGI ?

In the directory:"/c/altera/kits/nios2/examples/software/linux/apps/boa/util",

there are some files such as *.pl or cgi-test.cgi .....etc,

Is that means those files are examples for writing perl CGI?

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/blink.gif

Altera_Forum · ‎10-16-2004

Yes it does support cgi. I got it to work.

You have to create /home/httpd/cgi-bin directory in your fs project and place your programs there.

-Thomas

Altera_Forum · ‎10-17-2004

hello Thomas:

thanks for your reply,

so,what CGI language does the Microtronix linux distribution support? perl?

and ,is that means we don't have to install any additional application to support CGI?

then finally,could you show us a simple CGI program as an exmple?

your information helps a lot,

thanks.

Altera_Forum · ‎10-17-2004

Ok,

I was going to post this in the web server thread, but i will post it here instead.

CGI program can be written in any language because CGI is a method of passing data not a specific implementation. The easiest way is to create a C program using the Microtronix linux application wizard. For example this is a program that controls the LEDs on the cyclone dev board:

# include <stdio.h># include <string.h># include <stdlib.h>

// replace the path with proper path to nios2_system.h# include <C:\altera\kits\nios2\bin\eclipse\workspace\linux1\build\include\nios2_system.h>

void main(void)

{

np_pio *pio = na_led_pio;

pio->np_piodirection = 3;

pio->np_piodata = 0;

int content_length=0;

char *cgiinput ;

unsigned char mydata=0;

pio->np_piodata = 0x00;

printf("Content-type: text/html\n");

printf("\n");

if ( !(content_length = atoi(getenv("CONTENT_LENGTH"))) ) {

printf("No Content-Length was sent with the POST request.\n") ;

exit(1) ;

}

if ( !(cgiinput=(char *)malloc(content_length+1)) ) {

printf("Could not allocate memory for cgiinput.\n") ;

exit(1) ;

}

if (!fread(cgiinput, content_length, 1, stdin)) {

printf("Could not read CGI input from STDIN.\n") ;

exit(1) ;

}

cgiinput[content_length]='\0' ;

if (strstr(cgiinput, "LED1")) mydata |= 1;

if (strstr(cgiinput, "LED2")) mydata |= 2;

if (strstr(cgiinput, "LED3")) mydata |= 4;

if (strstr(cgiinput, "LED4")) mydata |= 8;

if (strstr(cgiinput, "LED5")) mydata |= 16;

if (strstr(cgiinput, "LED6")) mydata |= 32;

if (strstr(cgiinput, "LED7")) mydata |= 64;

if (strstr(cgiinput, "LED8")) mydata |= 128;

pio->np_piodata = mydata;

// printf("cgi input was: \n%s\n", cgiinput);

printf("<html><head><title>CGI\n");

printf("Test</title><body>\n");

printf("<h1>LEDs set</h1>");

printf("\n");

printf("</body></html>\n");

exit(0);

}

-----------

Please note that this program does not do proper parsing of CGI input parameters, it only checks if certain parameters were included. That works fine in this simple case.

To place this program in the cgi-bin directory, compile it first, then copy/paste to /home/httpd/cgi-bin and rename to "<filename>.cgi.exe" so that when the filesystem is built, it ends up with the proper ".cgi" extension.

Then you need a html file in order to make this CGI program useful. For example (Note: replace the IP with the dev boards IP, and cgitest2.cgi with the filename of your CGI program):

<FORM METHOD="POST"

ACTION="http://192.168.1.122/cgi-bin/cgitest2.cgi">

1<INPUT TYPE="checkbox" NAME="LED1" VALUE="led1" CHECKED>

2<INPUT TYPE="checkbox" NAME="LED2" VALUE="led2">

3<INPUT TYPE="checkbox" NAME="LED3" VALUE="led3">

4<INPUT TYPE="checkbox" NAME="LED4" VALUE="led4">

5<INPUT TYPE="checkbox" NAME="LED5" VALUE="led5">

6<INPUT TYPE="checkbox" NAME="LED6" VALUE="led6">

7<INPUT TYPE="checkbox" NAME="LED7" VALUE="led7">

8<INPUT TYPE="checkbox" NAME="LED8" VALUE="led8">

</FORM>

-------------------

You can execute this html file from your PC's desktop or host it on the dev board under /home/httpd.

I hope this helps, let me know if more explanation is needed.

-Thomas

Altera_Forum · ‎10-18-2004

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/laugh.gif it works!

Thank you very much,Thomas.

Altera_Forum · ‎10-17-2006

i do it according to guide

but HTTP 400 appear

why?

Altera_Forum · ‎10-17-2006

--- Quote Start ---

originally posted by zhangyan_swpu@Oct 17 2006, 04:09 AM

i do it according to guide

but http 400 appear

why?

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=18726)

--- quote end ---

--- Quote End ---

hi

don&#39;t give up, try this simple example :
************* html code : index.html******************
<FORM method="get" ACTION="mult.cgi" >
Please specify the multiplicands:
<INPUT NAME="m" SIZE="5">
<INPUT NAME="n" SIZE="5">
<INPUT TYPE="SUBMIT" VALUE="Multiply!">
</FORM>
****************************************
************** cgi code : mult.c******************
# include <stdio.h># include <stdlib.h>
int main(void)
{
char *data;
long m,n;
printf("%s%c%c\n",
"Content-Type:text/html;charset=iso-8859-1",13,10);
printf("<TITLE>Multiplication results</TITLE>\n");
printf("<H3>Multiplication results</H3>\n");
data = getenv("QUERY_STRING");
if(data == NULL)
printf("
Error! Error in passing data from form to script.");
else if(sscanf(data,"m=%ld&n=%ld",&m,&n)!=2)
printf("
Error! Invalid data. Data must be numeric.");
else
printf("
The product of %ld and %ld is %ld.",m,n,m*n);
return 0;
}
******************************************************
******************** Makefile : Makefile***********************# #  configurable options#  - set DEBUG = 1 to turn on debugging support# 
DEBUG = 1
PROJ_NAME = mult
INSTALL_DIR =
PROGS := $(PROJ_NAME).exe
CFLAGS +=
# #  You should not need to modify anything beyond this point# 
TOPDIR = .
include ./Rules.mak
ifeq &#39;$(DEBUG)&#39; &#39;1&#39;
PROGS += $(PROGS:.exe=.gdb)
endif
all: $(PROGS)
.PHONY: clean
clean:
-rm -f *. *.elf *.gdb *.bin *.exe
.PHONY: install
install: all
ifeq "$(INSTALL_DIR)" ""
$(error No installation directory specified)
endif
mkdir -p $(INSTALL_DIR)/bin
install -v $(filter %.exe, $(PROGS)) $(INSTALL_DIR)/bin
***************************************************************
steps to follow :
--> create a new uclinux application
--> add "mult.c" and "Makefile" to project
--> right click on project :
-- creat make target --> yes
-- build make target
--> if compilation success it will create a multi.exe
--> add "index.html" and "mult.exe" to httpd derictory on file system
--> rename "mult.exe" by "mult.cgi"
and go ! :D

Altera_Forum · ‎10-18-2006

thank you very much!

sdhnain!

i will try again!

Altera_Forum · ‎10-19-2006

--- Quote Start ---

originally posted by zhangyan_swpu@Oct 17 2006, 11:09 AM

i do it according to guide

but http 400 appear

why?

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=18726)

--- quote end ---

--- Quote End ---

Or, you can move to Linux PC, try out uClinux-dist as in Nios wiki.

There is a generic cgi example in uClinux-dist.

It is totally wrong to develop Linux on a Windows machine.

I believe you will need to move to Linux PC, sooner or later.

Altera_Forum · ‎11-10-2006

Hello,

I'm a newbie. http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/rolleyes.gif

I just joined.

I'll try this example and post another reply later.

Basically:

I'm trying to build a cgi app in C that will pipe SCPI ascii strings to and from a web page(s) and rack of (<=96) modules (CycloneIII's) via one App on one master controller with Altera Cyclone I/NIOS II/Microtronix Linux/etc.

All in a few weeks. LOL

Obviously I dont even know what the right questions to ask are yet. LOL.

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gif

I hope this is the right forum?

Altera_Forum · ‎11-11-2006

I'm trying to build/run the simpler sdhnain version.

I get these error messages when I try to "-- build make target"?

make -k all

no emulation specific options.

Makefile:25: *** missing separator. Stop.

What are emulation options? from SOPC builder ?

I'll try some more.

These are lines 23, 24, 25 in the makefile?

.PHONY: clean

clean:

-rm -f *.[oad] *.elf *.gdb *.bin *.exe

What seperator is needed and where?

Altera_Forum · ‎11-11-2006

--- Quote Start ---

originally posted by rfitz25@Nov 11 2006, 07:01 AM

hello,

i'm a newbie. http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/rolleyes.gif

i just joined.

i'll try this example and post another reply later.

basically:

i'm trying to build a cgi app in c that will pipe scpi ascii strings to and from a web page(s) and rack of (<=96) modules (cycloneiii's) via one app on one master controller with altera cyclone i/nios ii/microtronix linux/etc.

all in a few weeks. lol

obviously i dont even know what the right questions to ask are yet. lol.

http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/biggrin.gif

i hope this is the right forum?

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19373)

--- quote end ---

--- Quote End ---

Welcome.

The best advice is, ( shall I repeat again and again?)

You should move to Linux PC, try out uClinux-dist as in Nios wiki.

There is a working generic cgi example in uClinux-dist.

It is totally wrong to develop Linux on a Windows machine.

I believe you will need to move to Linux PC, sooner or later.

Altera_Forum · ‎11-14-2006

Thanks for the feedback.

I understand moving to a Linux PC sounds like a good idea.

However out here in the real world thats not always an option.

So theres no need for you to continue repeating yourself.

http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/tongue.gif

Anyway I'm back trying to get this project to compile.

I may try the LED version for the dev boards.

Thanks,

Richard

The best advice is, ( shall I repeat again and again?)

You should move to Linux PC, try out uClinux-dist as in Nios wiki.

There is a working generic cgi example in uClinux-dist.

It is totally wrong to develop Linux on a Windows machine.

I believe you will need to move to Linux PC, sooner or later.

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19381)</div>

--- Quote End ---

Altera_Forum · ‎11-15-2006

You can run Linux parallel on Windows with vmwares vmplayer or install co-linux or the other way "xenify" linux to run windows parallel on linux or ....

you do not need a second workstation... but if you have another workstation, vnc is a nice option.

Altera_Forum · ‎11-15-2006

Hello,

I need some help on boa. On the uClinux-dist, I included boa in make menuconfg, then I did

make romfs

make

make linux

make image

I can see /home/httpd and files inside it.

When I start boa, and use a browser to point to it, it doesn't seem to display anything.

Please help.

My uClinux is

/home/httpd> cat /proc/version

Linux version 2.6.17-uc1 (uclinux@colinux) (gcc version 3.4.6)# 46 PREEMPT Wed Nov 15 06:59:46 EST 2006

Altera_Forum · ‎11-15-2006

Hi,

What did you type in the browser ?

Regards.

--- Quote Start ---

originally posted by albertyong88@Nov 15 2006, 01:15 PM

hello,

i need some help on boa. on the uclinux-dist, i included boa in make menuconfg, then i did

make romfs

make

make linux

make image

i can see /home/httpd and files inside it.

when i start boa, and use a browser to point to it, it doesn't seem to display anything.

please help.

my uclinux is

/home/httpd> cat /proc/version

linux version 2.6.17-uc1 (uclinux@colinux) (gcc version 3.4.6)# 46 preempt wed nov 15 06:59:46 est 2006

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19442)

--- quote end ---

--- Quote End ---

Altera_Forum · ‎11-15-2006

--- Quote Start ---

originally posted by albertyong88@Nov 15 2006, 08:15 PM

hello,

i need some help on boa. on the uclinux-dist, i included boa in make menuconfg, then i did

make romfs

make

make linux

make image

i can see /home/httpd and files inside it.

when i start boa, and use a browser to point to it, it doesn't seem to display anything.

please help.

my uclinux is

/home/httpd> cat /proc/version

linux version 2.6.17-uc1 (uclinux@colinux) (gcc version 3.4.6)# 46 preempt wed nov 15 06:59:46 est 2006

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19442)

--- quote end ---

--- Quote End ---

It should work with default uClinux-dist nios2 config. You need only to enable your ether driver.

I have tested with both firefox browser and IE.

check,

1. ifconfig, can you see your eth0 dev ? can you ping to/from your pc?

2. netstat -a , can you see http service ?

3. wget http://localhost/index.html (http://localhost/index.html) , try connect from local

Altera_Forum · ‎11-15-2006

Hi hippo,

Checked that my http service is NOT on. I shall turn it on. Thanks for pointing out.

Altera_Forum · ‎11-15-2006

Hi,

I started http service by

boa -c /home/httpd

but, the browser doesn't display the page

However, when I use

telnet 192.168.1.239 80

GET /index_old.html HTTP/1.1(enter)

Host: 192.168.1.239(enter)

(enter)

I get the following:

<div class='quotetop'>QUOTE </div>

--- Quote Start ---

HTTP/1.0 200 OK

Date: Tue, 30 Nov 1999 04:12:48 GMT

Server: Boa/0.93.15

Connection: close

Content-Type: text/html

Content-Length: 333

Last-Modified: Tue, 30 Nov 1999 00:00:02 GMT

<HTML>

<HEAD>

</HEAD>

<BODY>

If you are seeing this page, then your web server is working, and now

you need to create some nice pages to replace this one :-).

If everything has built correctly then the

<A HREF=/cgi-bin/cgi_demo>CGI Demo</A> should be here.

</BODY>

</HTML>

Connection closed by foreign host.

uclinux@colinux:~$[/b]

--- Quote End ---

I am more confused now. Pls help.

Altera_Forum · ‎11-16-2006

--- Quote Start ---

originally posted by albertyong88@Nov 16 2006, 12:18 AM

hi,

i started http service by

boa -c /home/httpd

but, the browser doesn't display the page

however, when i use

telnet 192.168.1.239 80

get /index_old.html http/1.1(enter)

host: 192.168.1.239(enter)

(enter)

i get the following:

<div class='quotetop'>quote

--- quote end ---

--- quote start ---

http/1.0 200 ok

date: tue, 30 nov 1999 04:12:48 gmt

server: boa/0.93.15

connection: close

content-type: text/html

content-length: 333

last-modified: tue, 30 nov 1999 00:00:02 gmt

<html>

<head>

<title>a test web page</title>

</head>

<body>

<h1>test page</h1>

if you are seeing this page, then your web server is working, and now

you need to create some nice pages to replace this one :-).

if everything has built correctly then the

<a href=/cgi-bin/cgi_demo>cgi demo</a> should be here.

</body>

</html>

connection closed by foreign host.

uclinux@colinux:~$

--- Quote End ---

I am more confused now. Pls help.

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19454)</div>

[/b]

--- Quote End ---

Please start it over,

make clean

make menuconfig

Kernel/Library/Defaults Selection-->

[*] Default all settings (lose changes)

Then build through the image, without touching anyother config.

Then boot nios2, start boa with "boa &", and run the wget test (on nios2 , not your pc).

Altera_Forum · ‎11-16-2006

--- Quote Start ---

originally posted by hippo+nov 15 2006, 09:52 pm--><div class='quotetop'>quote (hippo @ nov 15 2006, 09:52 pm)</div>

--- quote start ---

<!--quotebegin-albertyong88@Nov 16 2006, 12:18 AM

hi,

i started http service by

boa -c /home/httpd

but, the browser doesn't display the page

however, when i use

telnet 192.168.1.239 80

get /index_old.html http/1.1(enter)

host: 192.168.1.239(enter)

(enter)

i get the following:

<div class='quotetop'>quote

--- quote end ---

--- quote start ---

http/1.0 200 ok

date: tue, 30 nov 1999 04:12:48 gmt

server: boa/0.93.15

connection: close

content-type: text/html

content-length: 333

last-modified: tue, 30 nov 1999 00:00:02 gmt

<html>

<head>

<title>a test web page</title>

</head>

<body>

<h1>test page</h1>

if you are seeing this page, then your web server is working, and now

you need to create some nice pages to replace this one :-).

if everything has built correctly then the

<a href=/cgi-bin/cgi_demo>cgi demo</a> should be here.

</body>

</html>

connection closed by foreign host.

uclinux@colinux:~$

--- Quote End ---

I am more confused now. Pls help.

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19454)</div>

[/b]

--- Quote End ---

Please start it over,

make clean

make menuconfig

Kernel/Library/Defaults Selection-->

[*] Default all settings (lose changes)

Then build through the image, without touching anyother config.

Then boot nios2, start boa with "boa &", and run the wget test (on nios2 , not your pc).

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=19458)</div>

[/b]

--- Quote End ---

Hippo, I don't get the wget test on nios2, what do you mean ?