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without continuation token avoid infinite loop error out #1704

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merged 1 commit into from Oct 9, 2022
Merged

without continuation token avoid infinite loop error out #1704

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66 changes: 48 additions & 18 deletions api-list.go
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Expand Up @@ -70,21 +70,28 @@ func (c *Client) listObjectsV2(ctx context.Context, bucketName string, opts List
// Return object owner information by default
fetchOwner := true

sendObjectInfo := func(info ObjectInfo) {
select {
case objectStatCh <- info:
case <-ctx.Done():
}
}

// Validate bucket name.
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
defer close(objectStatCh)
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return objectStatCh
}

// Validate incoming object prefix.
if err := s3utils.CheckValidObjectNamePrefix(opts.Prefix); err != nil {
defer close(objectStatCh)
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return objectStatCh
}

Expand All @@ -98,9 +105,9 @@ func (c *Client) listObjectsV2(ctx context.Context, bucketName string, opts List
result, err := c.listObjectsV2Query(ctx, bucketName, opts.Prefix, continuationToken,
fetchOwner, opts.WithMetadata, delimiter, opts.StartAfter, opts.MaxKeys, opts.headers)
if err != nil {
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return
}

Expand Down Expand Up @@ -137,6 +144,14 @@ func (c *Client) listObjectsV2(ctx context.Context, bucketName string, opts List
if !result.IsTruncated {
return
}

// Add this to catch broken S3 API implementations.
if continuationToken == "" {
sendObjectInfo(ObjectInfo{
Err: fmt.Errorf("listObjectsV2 is truncated without continuationToken, %s S3 server is incompatible with S3 API", c.endpointURL),
})
return
}
}
}(objectStatCh)
return objectStatCh
Expand Down Expand Up @@ -262,20 +277,28 @@ func (c *Client) listObjects(ctx context.Context, bucketName string, opts ListOb
// If recursive we do not delimit.
delimiter = ""
}

sendObjectInfo := func(info ObjectInfo) {
select {
case objectStatCh <- info:
case <-ctx.Done():
}
}

// Validate bucket name.
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
defer close(objectStatCh)
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return objectStatCh
}
// Validate incoming object prefix.
if err := s3utils.CheckValidObjectNamePrefix(opts.Prefix); err != nil {
defer close(objectStatCh)
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return objectStatCh
}

Expand All @@ -288,9 +311,9 @@ func (c *Client) listObjects(ctx context.Context, bucketName string, opts ListOb
// Get list of objects a maximum of 1000 per request.
result, err := c.listObjectsQuery(ctx, bucketName, opts.Prefix, marker, delimiter, opts.MaxKeys, opts.headers)
if err != nil {
objectStatCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return
}

Expand Down Expand Up @@ -343,21 +366,28 @@ func (c *Client) listObjectVersions(ctx context.Context, bucketName string, opts
delimiter = ""
}

sendObjectInfo := func(info ObjectInfo) {
select {
case resultCh <- info:
case <-ctx.Done():
}
}

// Validate bucket name.
if err := s3utils.CheckValidBucketName(bucketName); err != nil {
defer close(resultCh)
resultCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return resultCh
}

// Validate incoming object prefix.
if err := s3utils.CheckValidObjectNamePrefix(opts.Prefix); err != nil {
defer close(resultCh)
resultCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return resultCh
}

Expand All @@ -374,9 +404,9 @@ func (c *Client) listObjectVersions(ctx context.Context, bucketName string, opts
// Get list of objects a maximum of 1000 per request.
result, err := c.listObjectVersionsQuery(ctx, bucketName, opts.Prefix, keyMarker, versionIDMarker, delimiter, opts.MaxKeys, opts.headers)
if err != nil {
resultCh <- ObjectInfo{
sendObjectInfo(ObjectInfo{
Err: err,
}
})
return
}

Expand Down