UNIX ON-LINE Man Pages - Die Onlinehilfe

Die Syntax von Unixbefehlen wird in den entsprechenden Manpages dokumentiert. Hier können Sie diese Onlinehilfe für viele Standardbefehle abrufen.

Suchoptionen:
Seiten auflisten, welche beginnen mit:
A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   ALPHA   NUM   ANDERE   ALLE
asn1_read_value(3)                 libtasn1                 asn1_read_value(3)

NAME
       asn1_read_value - Returns the value of one element inside a structure

SYNOPSIS
       #include <libtasn1.h>

       asn1_retCode  asn1_read_value(ASN1_TYPE root, const char * name, void *
       ivalue, int * len);

ARGUMENTS
       ASN1_TYPE root
                   pointer to a structure.

       const char * name
                   the name of the element inside a structure that you want to
                   read.

       void * ivalue
                   vector  that  will contain the element's content, must be a
                   pointer to memory cells already allocated.

       int * len   number of bytes of *value: value[0]..value[len-1]. Initialy
                   holds the sizeof value.

DESCRIPTION
       Returns the value of one element inside a structure.

       If  an  element  is  OPTIONAL  and  the  function  "read_value" returns
       ASN1_ELEMENT_NOT_FOUND, it means that this element  wasn't  present  in
       the  der  encoding  that created the structure.  The first element of a
       SEQUENCE_OF or SET_OF is named "?1". The second one "?2" and so on.

INTEGER
       VALUE will contain a two's complement form integer.

       integer=-1  -> value[0]=0xFF , len=1.  integer=1   ->  value[0]=0x01  ,
       len=1.

ENUMERATED
       As INTEGER (but only with not negative numbers).

BOOLEAN
       VALUE will be the null terminated string "TRUE" or "FALSE" and LEN=5 or
       LEN=6.

OBJECT IDENTIFIER
       VALUE will be a null terminated string with each number separated by  a
       dot (i.e. "1.2.3.543.1").

       LEN = strlen(VALUE)+1

UTCTIME
       VALUE will be a null terminated string in one of these formats: "YYMMD-
       Dhhmmss+hh'mm'" or "YYMMDDhhmmss-hh'mm'".  LEN=strlen(VALUE)+1.

GENERALIZEDTIME
       VALUE will be a null terminated string in the same format used  to  set
       the value.

OCTET STRING
       VALUE  will  contain  the  octet  string  and LEN will be the number of
       octets.

GENERALSTRING
       VALUE will contain the generalstring and LEN  will  be  the  number  of
       octets.

BIT STRING
       VALUE  will  contain  the bit string organized by bytes and LEN will be
       the number of bits.

CHOICE
       If NAME indicates a choice type, VALUE  will  specify  the  alternative
       selected.

ANY
       If  NAME indicates an any type, VALUE will indicate the DER encoding of
       the structure actually used.

RETURNS
ASN1_SUCCESS
       Set value OK.

ASN1_ELEMENT_NOT_FOUND
       NAME is not a valid element.

ASN1_VALUE_NOT_FOUND
       There isn't any value for the element selected.

ASN1_MEM_ERROR
       The value vector isn't big enough to store the result.   In  this  case
       LEN will contain the number of bytes needed.

COPYRIGHT
       Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc..
       Copying  and  distribution  of this file, with or without modification,
       are permitted in any medium  without  royalty  provided  the  copyright
       notice and this notice are preserved.

SEE ALSO
       The  full documentation for libtasn1 is maintained as a Texinfo manual.
       If the info and libtasn1 programs are properly installed at your  site,
       the command

              info libtasn1

       should give you access to the complete manual.

libtasn1                              2.2                   asn1_read_value(3)
 

Scannen Sie den Barcode um die Webseite zu öffnen


Quelle: http://www.trinler.net/de/service/doc/linux/man.html?command=asn1_read_value
Gedruckt am: 16.12.2017 21:42 GMT+0100 (2017-12-16T21:42:14+01:00)