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C[omp]ute

Welcome to my blog, which was once a mailing list of the same name and is still generated by mail. Please reply via the "comment" links.

Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

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© 2006-2017 Andrew Cooke (site) / post authors (content).

XML RPC with bash/netcat

From: "andrew cooke" <andrew@...>

Date: Sun, 8 Jan 2006 18:56:25 -0300 (CLST)

I was looking at technorati - http://www.technorati.com/ - and they
support an xml rpc "ping" to signal when a blog is updated.  I wondered
how easy it would be to add such a thing with bash - turns out it's
trivial.  Here's the code (it's not in the download source because I don't
want people pinging with my address and I don't trust people to configure
things, but you can cut + [aste from below)

Andrew

#! /bin/bash

# ping technorati

#set -v

# configuration
ADDRESS="http://www.acooke.org/cute"
NAME="C[omp]UTE"
# (end of configuration)

export PATH="$PATH:$CUTE_DIR/scripts"

tmp=`mktemp`
echo "<?xml version=\"1.0\"?>
<methodCall>
  <methodName>weblogUpdates.ping</methodName>
  <params>
    <param>
      <value>$NAME</value>
    </param>
    <param>
      <value>$ADDRESS</value>
    </param>
  </params>
</methodCall>" > "$tmp"

size=`cat "$tmp" | wc -c`

msg=`mktemp`
echo "POST /rpc/ping HTTP/1.0
User-Agent: bash script across netcat - andrew@...
Host: rpc.technorati.com
Content-Type: text/xml
Content-length: $size
" > "$msg"

cat "$tmp" >> "$msg"
rm "$tmp"
cat "$msg"
cat "$msg" | nc rpc.technorati.com 80
rm "$msg"

And an ATOM feed too...

From: "andrew cooke" <andrew@...>

Date: Sun, 8 Jan 2006 22:48:08 -0300 (CLST)

As you can see (the little orange icon) I've also added a basic ATOM feed.
 It's pretty impressive how simple these things are!

Testing Ping

From: "andrew cooke" <andrew@...>

Date: Sat, 1 Jul 2006 17:00:08 -0400 (CLT)

Hmmm.  Something was broken.  See if this fixes it....

Another Test (Unique IDs)

From: "andrew cooke" <andrew@...>

Date: Sun, 9 Jul 2006 18:11:14 -0400 (CLT)

I wasn't generating unique ID values for replies.  This should now work
(which means Technorati will not ignore them, I hope).

Andrew

Some thanks, and a modified version removing the depdency on Netcat

From: Atticus <grobe0ba@...>

Date: Fri, 27 Jun 2014 04:47:36 -0400

Thanks for the down and dirty on this. Below is a slightly modified version
removing the dependency on netcat.

#! /bin/bash

# ping technorati

#set -v

# configuration
ADDRESS="http://www.acooke.org/cute"
NAME="C[omp]UTE"
# (end of configuration)

export PATH="$PATH:$CUTE_DIR/scripts"

tmp=`mktemp`
echo "<?xml version=\"1.0\"?>
<methodCall>
  <methodName>weblogUpdates.ping</methodName>
  <params>
    <param>
      <value>$NAME</value>
    </param>
    <param>
      <value>$ADDRESS</value>
    </param>
  </params>
</methodCall>" > "$tmp"

size=`cat "$tmp" | wc -c`

msg=`mktemp`
echo "POST /rpc/ping HTTP/1.0
User-Agent: bash script across netcat - andrew@...
Host: rpc.technorati.com
Content-Type: text/xml
Content-length: $size
" > "$msg"

cat "$tmp" >> "$msg"
rm "$tmp"
cat "$msg"
#Open file descriptor 15 to rpc.technorati.com:80
exec 15<>/dev/tcp/rpc.technorati.com/80
cat $msg >&15
cat <&15 >/dev/null #Disgarding the return
#When the connection closes, cat returns, and bash closes file descriptor 15
rm "$msg"


--
Byron Grobe

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