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pcloud: only use SHA1 hashes in EU region

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Apparently only SHA1 hashes are supported in the EU region for
pcloud. This has been confirmed by pCloud support. The EU regions also
support SHA256 hashes which we don't support yet.

https://forum.rclone.org/t/pcloud-to-local-no-hashes-in-common/19440
This commit is contained in:
Nick Craig-Wood
2020-10-08 18:14:53 +01:00
parent c3ac9319f4
commit f43a9ac17e
4 changed files with 49 additions and 34 deletions
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64
docs/content/overview.md
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@ -22,7 +22,7 @@ Here is an overview of the major features of each cloud storage system.
| Backblaze B2 | SHA1 | Yes | No | No | R/W |
| Box | SHA1 | Yes | Yes | No | - |
| Citrix ShareFile | MD5 | Yes | Yes | No | - |
| Dropbox | DBHASH † | Yes | Yes | No | - |
| Dropbox | DBHASH ¹ | Yes | Yes | No | - |
| FTP | - | No | No | No | - |
| Google Cloud Storage | MD5 | Yes | No | No | R/W |
| Google Drive | MD5 | Yes | No | Yes | R/W |
@ -31,25 +31,52 @@ Here is an overview of the major features of each cloud storage system.
| Hubic | MD5 | Yes | No | No | R/W |
| Jottacloud | MD5 | Yes | Yes | No | R/W |
| Koofr | MD5 | No | Yes | No | - |
| Mail.ru Cloud | Mailru ‡‡‡ | Yes | Yes | No | - |
| Mail.ru Cloud | Mailru ⁶ | Yes | Yes | No | - |
| Mega | - | No | No | Yes | - |
| Memory | MD5 | Yes | No | No | - |
| Microsoft Azure Blob Storage | MD5 | Yes | No | No | R/W |
| Microsoft OneDrive | SHA1 ‡‡ | Yes | Yes | No | R |
| OpenDrive | MD5 | Yes | Yes | Partial \* | - |
| Microsoft OneDrive | SHA1 ⁵ | Yes | Yes | No | R |
| OpenDrive | MD5 | Yes | Yes | Partial ⁸ | - |
| OpenStack Swift | MD5 | Yes | No | No | R/W |
| pCloud | MD5, SHA1 | Yes | No | No | W |
| pCloud | MD5, SHA1 ⁷ | Yes | No | No | W |
| premiumize.me | - | No | Yes | No | R |
| put.io | CRC-32 | Yes | No | Yes | R |
| QingStor | MD5 | No | No | No | R/W |
| Seafile | - | No | No | No | - |
| SFTP | MD5, SHA1 ‡ | Yes | Depends | No | - |
| SFTP | MD5, SHA1 ² | Yes | Depends | No | - |
| SugarSync | - | No | No | No | - |
| Tardigrade | - | Yes | No | No | - |
| WebDAV | MD5, SHA1 ††| Yes ††† | Depends | No | - |
| WebDAV | MD5, SHA1 ³ | Yes ⁴ | Depends | No | - |
| Yandex Disk | MD5 | Yes | No | No | R/W |
| The local filesystem | All | Yes | Depends | No | - |
### Notes
¹ Dropbox supports [its own custom
hash](https://www.dropbox.com/developers/reference/content-hash).
This is an SHA256 sum of all the 4MB block SHA256s.
² SFTP supports checksums if the same login has shell access and
`md5sum` or `sha1sum` as well as `echo` are in the remote's PATH.
³ WebDAV supports hashes when used with Owncloud and Nextcloud only.
⁴ WebDAV supports modtimes when used with Owncloud and Nextcloud only.
⁵ Microsoft OneDrive Personal supports SHA1 hashes, whereas OneDrive
for business and SharePoint server support Microsoft's own
[QuickXorHash](https://docs.microsoft.com/en-us/onedrive/developer/code-snippets/quickxorhash).
⁶ Mail.ru uses its own modified SHA1 hash
⁷ pCloud only supports SHA1 (not MD5) in its EU region
⁸ Opendrive does not support creation of duplicate files using
their web client interface or other stock clients, but the underlying
storage platform has been determined to allow duplicate files, and it
is possible to create them with `rclone`. It may be that this is a
mistake or an unsupported feature.
### Hash ###
The cloud storage system supports various hash types of the objects.
@ -60,23 +87,6 @@ the `check` command.
To use the verify checksums when transferring between cloud storage
systems they must support a common hash type.
† Note that Dropbox supports [its own custom
hash](https://www.dropbox.com/developers/reference/content-hash).
This is an SHA256 sum of all the 4MB block SHA256s.
‡ SFTP supports checksums if the same login has shell access and `md5sum`
or `sha1sum` as well as `echo` are in the remote's PATH.
†† WebDAV supports hashes when used with Owncloud and Nextcloud only.
††† WebDAV supports modtimes when used with Owncloud and Nextcloud only.
‡‡ Microsoft OneDrive Personal supports SHA1 hashes, whereas OneDrive
for business and SharePoint server support Microsoft's own
[QuickXorHash](https://docs.microsoft.com/en-us/onedrive/developer/code-snippets/quickxorhash).
‡‡‡ Mail.ru uses its own modified SHA1 hash
### ModTime ###
The cloud storage system supports setting modification times on
@ -117,12 +127,6 @@ objects with the same name.
This confuses rclone greatly when syncing - use the `rclone dedupe`
command to rename or remove duplicates.
\* Opendrive does not support creation of duplicate files using
their web client interface or other stock clients, but the underlying
storage platform has been determined to allow duplicate files, and it
is possible to create them with `rclone`. It may be that this is a
mistake or an unsupported feature.
### Restricted filenames ###
Some cloud storage systems might have restrictions on the characters