Hello Brendan,
I too was having this problem, but now think that I am getting a very good
handle on these interfaces.
Being that you are trying to hash the standard unix crypt function to look over
the password file, I think that this solution might help you.
I have a simple an efficient C++ solution to this problem:
My "unixcrypt" functions now looks like this
---------------------------------------------------------------
text *unix_encrypt(text *inarg, text *inpass)
{ char temp[25]; int temp_len; // Take the "text" variables directly to the "strings" string
instr(VARDATA(inarg),0,VARSIZE(inarg)-VARHDRSZ); string passPhrase(VARDATA(inpass),0,VARSIZE(inpass)-VARHDRSZ);
strcpy(temp,crypt(instr.c_str(),passPhrase.c_str())); temp_len=strlen(temp); string
outstr(temp,0,temp_len); // Set up the outgoing DB "text" variable int32 new_text_size =
outstr.size()+4; text *new_text = (text *) palloc(new_text_size); memset((void *) new_text, 0,
new_text_size); VARATT_SIZEP(new_text) = new_text_size; // Move the variable over from the string
strncpy(VARDATA(new_text),outstr.c_str(),outstr.size()); return new_text;
}
----------------------------------------------------------------------------
Be sure to include the header:
#include <unistd.h> // for unix crypt function
---------------------------------------------------------------------------
hope that this helps,
Lonnie
--- Brendan Guenther <guenthe8@msu.edu> wrote:
>
>
> Peter Eisentraut wrote:
>
> > The best things might be not to mess with this but call textin() and
> > textout() to convert your data to C strings.
>
> I can't seem to find documentation for textin() and textout() can somebody
> point
> me in the right direction for this or provide an example. I'm having similar
> problems that Lonnie is having with VARDATA and I think this might help. I'm
> trying to link in a C function that makes use of OpenSSL's libcrypto
> functions.
>
> Basically I just need to hash and verify passwords in the database, so as an
> alternate question, if I'm missing something and there is a better way to do
> password storage let me know.
>
> Thanks,
> --
> Brendan Guenther
> guenthe8@msu.edu
>
>
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