printf from coreutils 5.2.1 Variabe managing problem

[alberto . colosi]

----- Forwarded by Alberto Colosi/SI/RM/GSI/it on 28/10/2004 22.38 -----


Alberto Colosi
16/10/2005 20.29

        To:     address@hidden, address@hidden
        cc: 
        Subject:        KEEP THIS EMAIL! NOT THE PREVIOUS - REPRODUCED  
Variabe managing problem

SORRY This is the right example to show the difference between echo and 
printf and printf %b

None keeps all the strings back.




I reproduced outside the CGI:

Output:
------------------------------------------
A=V6
    5Q3:P2      -       V6
                          5Q3:P2
B=qwerta!1      -       qwerta!1
------------------------------------------
A=V6]Q3:P2      -       V6]Q3:P2
B=qwerta                -       qwerta
------------------------------------------
A=V6]Q3:P2      -       V6]Q3:P2
B=qwerta                -       qwerta
------------------------------------------

Script:
#!/bin/bash3

# USER="test"
# OLDP="qwerta!1"
# NEWP1="V6]Q3:P2"
# NEWP2="V6]Q3:P2"

A="V6\0135Q3\072P2"
B="qwerta\0411"

A2=$A
B2=$B

echo "------------------------------------------"
printf "A=$A    -       $A2\n\r"
printf "B=$B    -       $B2\n\r"
echo "------------------------------------------"
echo -e "A=$A   -       $A2"
echo -e "B=$B   -       $B2"
echo "------------------------------------------"
printf %b "A=$A -       $A2\n\r"
printf %b "B=$B -       $B2\n\r"
echo "------------------------------------------"

Why don't take back the original code? something is decodifed well and 
other in a trash way. For some chars if to printf I add %b is decoded but 
is not what was before! so no choice is the winner!. Have I to be sanct to 
decode all?



Alberto Colosi
IBM Global  Services
IBM Business Consulting Services
Sistemi Informativi S.P.A.
IT/ITS Division
IBM VTS Focal Point per SI
NetWork Control/Operations Center
    (NetWork and Security [*Master] office)
SECURITY IS EVERYONE'S BUSINESS






Alberto Colosi
16/10/2005 19.57

        To:     address@hidden
        cc:     address@hidden
        Subject:        Re: Variabe managing problem

I don't think so.

If I use ProcCGIInput.sh I get escaped sequences like:
V6\0135Q3\072P2 
qwerta\0411 
qwerta\0411

If I don't use it (ProcCGIInput.sh) and I "read" the standard input (the 
input of the POST from a simple form via a simple HTML page) 
user=test&oldpw=V6%5DQ3%3AP2&newpw1=qwerta%211&newpw2=qwerta%211

All are POSTs type application/x-www-form-urlencoded and to "normalize" 
encoded chars I have seen that reasingning the "coded" variable to a new 
one take bake the original "special" chars.           \0135   go back to  
]            and      \041  go back to    !

Now, is clear that BASH know that codes but fail in some conversion. Know 
these codes becouse at 90% all is decoded well but some char sometime 
fail.



Why it?



Alberto Colosi
IBM Global  Services
IBM Business Consulting Services
Sistemi Informativi S.P.A.
IT/ITS Division
IBM VTS Focal Point per SI
NetWork Control/Operations Center
    (NetWork and Security [*Master] office)
SECURITY IS EVERYONE'S BUSINESS






Chet Ramey <address@hidden>
16/10/2005 04.32
Please respond to chet.ramey
 
        To:     address@hidden
        cc:     address@hidden
        Subject:        Re: Variabe managing problem


address@hidden wrote:
> Hi, If I put test as VARIABLE / COSTANTS  as        OLDP="blablabla" it 
> remain unmodified
> 
> USER="test"
> OLDP="qwerta!1"
> NEWP1="V6]Q3:P2"
> NEWP2="V6]Q3:P2"
> 
> Without %b on onl password this random temporary password while in 
change 
> password was resulting in            V6 Q3:P2    but space is a not 
> alloved char.
> 
> Without %b     qwerta!1 work BAD and change in qwerta!         without 
> %b       qwerta!1           work fine but not     V6]Q3:P2
> 
> So the trouble is ProcCGIInput.sh ??? but how to take a POST form input? 
.

The problem must be somewhere in ProcCGIInput.sh, since I can't
reproduce any bad behavior using a shell script with your variables
and input values.

The POST question I can't help you with.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                 Live Strong.
Chet Ramey, ITS, CWRU    address@hidden    
http://cnswww.cns.cwru.edu/~chet/