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package proton_api_bridge
import (
"context"
"time"
"github.com/henrybear327/go-proton-api"
"github.com/relvacode/iso8601"
)
type FileSystemAttrs struct {
ModificationTime time.Time
Size int64
BlockSizes []int64
Digests string // sha1 string
}
func (protonDrive *ProtonDrive) GetRevisions(ctx context.Context, link *proton.Link, revisionType proton.RevisionState) ([]*proton.RevisionMetadata, error) {
revisions, err := protonDrive.c.ListRevisions(ctx, protonDrive.MainShare.ShareID, link.LinkID)
if err != nil {
return nil, err
}
ret := make([]*proton.RevisionMetadata, 0)
// Revisions are only for files, they represent “versions” of files.
// Each file can have 1 active/draft revision and n obsolete revisions.
for i := range revisions {
if revisions[i].State == revisionType {
ret = append(ret, &revisions[i])
}
}
return ret, nil
}
func (protonDrive *ProtonDrive) GetActiveRevisionAttrsByID(ctx context.Context, linkID string) (*FileSystemAttrs, error) {
link, err := protonDrive.getLink(ctx, linkID)
if err != nil {
return nil, err
}
return protonDrive.GetActiveRevisionAttrs(ctx, link)
}
// Might return nil when xattr is missing
func (protonDrive *ProtonDrive) GetActiveRevisionAttrs(ctx context.Context, link *proton.Link) (*FileSystemAttrs, error) {
if link == nil {
return nil, ErrLinkMustNotBeNil
}
revisionsMetadata, err := protonDrive.GetRevisions(ctx, link, proton.RevisionStateActive)
if err != nil {
return nil, err
}
if len(revisionsMetadata) != 1 {
return nil, ErrCantFindActiveRevision
}
nodeKR, err := protonDrive.getLinkKR(ctx, link)
if err != nil {
return nil, err
}
signatureVerificationKR, err := protonDrive.getSignatureVerificationKeyring([]string{link.FileProperties.ActiveRevision.SignatureEmail})
if err != nil {
return nil, err
}
revisionXAttrCommon, err := revisionsMetadata[0].GetDecXAttrString(signatureVerificationKR, nodeKR)
if err != nil {
return nil, err
}
if revisionXAttrCommon == nil {
return nil, nil
}
modificationTime, err := iso8601.ParseString(revisionXAttrCommon.ModificationTime)
if err != nil {
return nil, err
}
var sha1Hash string
if val, ok := revisionXAttrCommon.Digests["SHA1"]; ok {
sha1Hash = val
} else {
sha1Hash = ""
}
return &FileSystemAttrs{
ModificationTime: modificationTime,
Size: revisionXAttrCommon.Size,
BlockSizes: revisionXAttrCommon.BlockSizes,
Digests: sha1Hash,
}, nil
}
func (protonDrive *ProtonDrive) GetActiveRevisionWithAttrs(ctx context.Context, link *proton.Link) (*proton.Revision, *FileSystemAttrs, error) {
if link == nil {
return nil, nil, ErrLinkMustNotBeNil
}
revisionsMetadata, err := protonDrive.GetRevisions(ctx, link, proton.RevisionStateActive)
if err != nil {
return nil, nil, err
}
if len(revisionsMetadata) != 1 {
return nil, nil, ErrCantFindActiveRevision
}
revision, err := protonDrive.c.GetRevisionAllBlocks(ctx, protonDrive.MainShare.ShareID, link.LinkID, revisionsMetadata[0].ID)
if err != nil {
return nil, nil, err
}
nodeKR, err := protonDrive.getLinkKR(ctx, link)
if err != nil {
return nil, nil, err
}
signatureVerificationKR, err := protonDrive.getSignatureVerificationKeyring([]string{link.FileProperties.ActiveRevision.SignatureEmail})
if err != nil {
return nil, nil, err
}
revisionXAttrCommon, err := revision.GetDecXAttrString(signatureVerificationKR, nodeKR)
if err != nil {
return nil, nil, err
}
modificationTime, err := iso8601.ParseString(revisionXAttrCommon.ModificationTime)
if err != nil {
return nil, nil, err
}
var sha1Hash string
if val, ok := revisionXAttrCommon.Digests["SHA1"]; ok {
sha1Hash = val
} else {
sha1Hash = ""
}
return &revision, &FileSystemAttrs{
ModificationTime: modificationTime,
Size: revisionXAttrCommon.Size,
BlockSizes: revisionXAttrCommon.BlockSizes,
Digests: sha1Hash,
}, nil
}
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