Enum BlobError 

pub enum BlobError {
    Truncated {
        need: usize,
        have: usize,
    },
    UnsupportedRequirement(u64),
    ForgedLength {
        field: &'static str,
        value: u64,
    },
    InvalidUtf8(&'static str),
    Malformed(&'static str),
}

What went wrong parsing a blob.

Every variant is a refusal, never a best-effort recovery: a blob arrives from another wheel, another process, or a network, so every count and length in its header is attacker-controlled. Recovering from a bad one means acting on a value an attacker chose.

Variants

Truncated

The buffer is shorter than the structure it claims to contain.

Fields

need: usize

Bytes the blob says it needs.

have: usize

Bytes actually available.

UnsupportedRequirement(u64)

required_mask carries a bit this build does not understand. The producer needs an interpretation we cannot provide, so proceeding would silently misread the data.

ForgedLength

A count or length would overflow when multiplied out, or derives an offset past the end of the blob.

Fields

field: &'static str

Which header field was implausible.

value: u64

The value it carried.

InvalidUtf8(&'static str)

A string region is not valid UTF-8.

Malformed(&'static str)

The blob is internally inconsistent in a way no single field explains.

Trait Implementations

impl Clone for BlobError

fn clone(&self) -> BlobError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BlobError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for BlobError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for BlobError

impl Error for BlobError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for BlobError

fn eq(&self, other: &BlobError) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for BlobError