Help with HTML


 
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# 1  
Old 07-14-2009
Help with HTML

Hi guys,

I'm supposed to write a program to display the "view source" content of a web page...I have no clue were to start...

please help me guys....
# 2  
Old 07-14-2009
Depends on how you're supposed to implement it

Very Abstract: wget, curl, lynx
Abstract: Perl with LWP or similar
Quite Abstract: ksh/bash, if it can open socket connections
Not Really Abstract: Sockets in C
# 3  
Old 07-14-2009
Or like to display it using http server = cgi-script ?
Code:
#!/bin/ksh
# call this somename cgi-script   somename?url=http://...
tf="/var/tmp/$$.tmp"
str="$QUERY_STRING"
url="${str/url=/}"
wget -O $tf  "$url"
cat <<EOF
Content-type: text/plain

$(cat $tf)
EOF
rm -f $tf 2>/dev/null

# 4  
Old 07-14-2009
I'm supposed to write the coding in C..

so am I supposed to look up sockets in C ???
# 5  
Old 07-14-2009
There's a pretty nice guide about network programming: Beej's Guide to Network Programming
When you've got that down, move on to HTTP (RFCs for HTTP/1.0 and HTTP/1.1)
# 6  
Old 07-14-2009
It's simple using ksh93, perl, ...
Call this script ex. ./thisscript "/xxx/index.html"
Code:
#!/bin/ksh
page="$1"
exec 3<>/dev/tcp/hostname/servicename
# or
# exec 3<>/dev/tcp/ip/port
echo -e "GET $page HTTP/1.0\n"  >&3
while read -u3 line
do
     echo "$line"
done

# 7  
Old 07-14-2009
/dev/tcp ? Almost nobody has that.

Try this:
Code:
#!/bin/sh

wget http://some.website/ -O - 2> /dev/null | less

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