diff options
Diffstat (limited to 'doc/texi/element.c.texi')
| -rw-r--r-- | doc/texi/element.c.texi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/doc/texi/element.c.texi b/doc/texi/element.c.texi index 6e40405..9f793e5 100644 --- a/doc/texi/element.c.texi +++ b/doc/texi/element.c.texi @@ -122,7 +122,7 @@ pointer to memory cells already allocated (may be @code{NULL} ). @var{len}: number of bytes of *value: value[0]..value[len-1]. Initialy holds the sizeof value. -Returns the value of one element inside a structure. +Returns the value of one element inside a structure. If an element is OPTIONAL and this returns @code{ASN1_ELEMENT_NOT_FOUND} , it means that this element wasn't present in the der encoding that created the structure. The first element @@ -176,7 +176,8 @@ encoding of the structure actually used. @code{ASN1_VALUE_NOT_FOUND} if there isn't any value for the element selected, and @code{ASN1_MEM_ERROR} if The value vector isn't big enough to store the result, and in this case @code{len} will contain the number of -bytes needed. +bytes needed. On the occasion that the stored data are of zero-length +this function may return @code{ASN1_SUCCESS} even if the provided @code{len} is zero. @end deftypefun @subheading asn1_read_value_type @@ -194,7 +195,7 @@ holds the sizeof value. @var{etype}: The type of the value read (ASN1_ETYPE) -Returns the type and value of one element inside a structure. +Returns the type and value of one element inside a structure. If an element is OPTIONAL and this returns @code{ASN1_ELEMENT_NOT_FOUND} , it means that this element wasn't present in the der encoding that created the structure. The first element @@ -248,7 +249,8 @@ encoding of the structure actually used. @code{ASN1_VALUE_NOT_FOUND} if there isn't any value for the element selected, and @code{ASN1_MEM_ERROR} if The value vector isn't big enough to store the result, and in this case @code{len} will contain the number of -bytes needed. +bytes needed. On the occasion that the stored data are of zero-length +this function may return @code{ASN1_SUCCESS} even if the provided @code{len} is zero. @end deftypefun @subheading asn1_read_tag |