suitable output of hexdump in bash to be input of hex2bin function in php

Question

A simple case , what's the suitable output for hexdump in bash (what needed options) to make it proper to be an input for hex2bin function in php !
P.S : I'm using it for streaming a certificate (made by OpenSSL command) via web service .
I've updated PHP to 5.4.0 & I'm using CentOS 6

score 0 · Answer 1 · answered Jun 22 '13 at 13:07

0

hexdump -e '1/1 "%02x"' does the trick.

P.S. To avoid extra dependencies on hexdump binary you might want to consider using php for that and to write a short loop reading from stdin and writing out via bin2hex().

answered Jun 22 '13 at 13:07

ash108

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output of this command didn't go with hex2bin . no error or warning and no output either . I'm forced to make this sequence in calling to separate bash code which deals with files on the server from web service from PHP interface which just deal with WS response . – SafeY Jun 22 '13 at 13:20

score 0 · Answer 2 · answered Jun 23 '13 at 11:22

solution is to remove spaces of the output of bash in bash :

res=`xxd -p $exportedkey`
echo "${res//[[:space:]]/}"

in php :

$hex = hex2bin($result);
header("Content-Description: File Transfer");
header("Content-Type: application/octet-stream");
header("Content-Transfer-Encoding: binary");
header("Content-Disposition: attachment; filename=hex.pfx");
header('Content-Length: '.  strlen($hex));
header('Expires: 0');
header('Cache-Control: must-revalidate');
header('Pragma: public');

echo $hex;
exit();

hope this helps others who have same problem .

suitable output of hexdump in bash to be input of hex2bin function in php

2 Answers2