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support/download: Add SFTP support

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Add Secure File Transfer Program (SFTP) support using a simple wrapper.
SFTP is a common protocol used to transfer files securely between
enterprises, but it is not currently supported in Buildroot because all
of the packages are usually available via HTTP, git or some other
download method.

SFTP is similar to FTP but it preforms all operations over an encrypted
SSH transport using a specific protocol. This is unlike ftps, which is
traditional FTP over an SSL/TLS connection.

Signed-off-by: Thomas Preston <thomas.preston@codethink.co.uk>
Signed-off-by: Michael Drake <michael.drake@codethink.co.uk>
[Arnout:
 - update documentation with sftp everywhere scp is mentioned;
 - rename "verbose" variable to "quiet";
 - print the sftp command, similar to wget and scp helpers.
]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Thomas Preston
2020-04-15 17:48:45 +01:00
committed by Arnout Vandecappelle (Essensium/Mind)
parent a5d2400950
commit 16f660f8ce
6 changed files with 51 additions and 2 deletions
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4
docs/manual/adding-packages-generic.txt
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@@ -256,7 +256,7 @@ not and can not work as people would expect it should:
+scp://[user@]host:filepath+, and that filepath is relative to the
user's home directory, so you may want to prepend the path with a
slash for absolute paths:
+scp://[user@]host:/absolutepath+. +
+scp://[user@]host:/absolutepath+. The same goes for SFTP URLs. +
If +HOST_LIBFOO_SITE+ is not specified, it defaults to
+LIBFOO_SITE+.
Examples: +
@@ -291,6 +291,8 @@ not and can not work as people would expect it should:
+ftp://+.
** +scp+ for downloads of tarballs over SSH with scp. Used by
default when +LIBFOO_SITE+ begins with +scp://+.
** +sftp+ for downloads of tarballs over SSH with sftp. Used by
default when +LIBFOO_SITE+ begins with +sftp://+.
** +svn+ for retrieving source code from a Subversion repository.
Used by default when +LIBFOO_SITE+ begins with +svn://+. When a
+http://+ Subversion repository URL is specified in

1
docs/manual/prerequisite.txt
View File

@@ -78,6 +78,7 @@ corresponding tool on the host system:
** +mercurial+
** +rsync+
** +scp+
** +sftp+
** +subversion+
* Java-related packages, if the Java Classpath needs to be built for