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ssh: make CURLOPT_SSH_PUBLIC_KEYFILE treat "" as NULL

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The CURLOPT_SSH_PUBLIC_KEYFILE option has been documented to handle
empty strings specially since curl-7_25_0-31-g05a443a but the behavior
was unintentionally removed in curl-7_38_0-47-gfa7d04f.

This commit restores the original behavior and clarifies it in the
documentation that NULL and "" have both the same meaning when passed
to CURLOPT_SSH_PUBLIC_KEYFILE.

Bug: http://curl.haxx.se/mail/lib-2016-01/0072.html
This commit is contained in:
Kamil Dudka
2016-01-15 10:27:33 +01:00
parent be79d83b00
commit be538e0766
3 changed files with 11 additions and 6 deletions
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8
docs/libcurl/opts/CURLOPT_SSH_PUBLIC_KEYFILE.3
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@@ -35,11 +35,11 @@ libcurl defaults to \fB$HOME/.ssh/id_dsa.pub\fP if the HOME environment
variable is set, and just "id_dsa.pub" in the current directory if HOME is not
set.
If an empty string is passed, libcurl will pass no public key to libssh2 which
then tries to compute it from the private key, this is known to work when
libssh2 1.4.0+ is linked against OpenSSL.
If NULL (or an empty string) is passed, libcurl will pass no public key to
libssh2, which then tries to compute it from the private key. This is known
to work with libssh2 1.4.0+ linked against OpenSSL.
.SH DEFAULT
As explained above
NULL
.SH PROTOCOLS
SFTP and SCP
.SH EXAMPLE