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setopt: allow CURLOPT_INTERFACE to be set to NULL #14629

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@bagder bagder commented Aug 21, 2024

Ref: #14299 (comment) Regression from 3060557 (shipped in 8.9.0)

@github-actions github-actions bot added the tests label Aug 21, 2024
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rebuilt curlftpfs with this patch applied to curl, and confirmed that this fixes the linked issue.

@bagder bagder closed this in b0b4b48 Aug 21, 2024
@bagder bagder deleted the bagder/interface-null branch August 21, 2024 12:34
bagder added a commit that referenced this pull request Aug 21, 2024
Previously this test allowed to many error values when setting a pointer
setopt to NULL, which made this test miss #14629.

Now, setting an option to NULL tests for a smaller subset of return
values.

As a consequence, CURLOPT_PROTOCOLS_STR and CURLOPT_REDIR_PROTOCOLS_STR
both now also support NULL as a way to restore back to default values.

In curl.h, I removed the OBSOLETE named values from the setopt list.
bagder added a commit that referenced this pull request Aug 21, 2024
Previously this test allowed too many error values when setting a pointer
setopt to NULL, which made this test miss #14629.

Now, setting an option to NULL tests for a smaller subset of return
values.

As a consequence, CURLOPT_PROTOCOLS_STR and CURLOPT_REDIR_PROTOCOLS_STR
both now also support NULL as a way to restore back to default values.

In curl.h, I removed the OBSOLETE named values from the setopt list.
bagder added a commit that referenced this pull request Aug 22, 2024
Previously this test allowed a few error values when setting a pointer
setopt to NULL, which made this test miss #14629.

Now, no errors are accepted for setopts - but now we also check that the
variable exists before setting it.

As a consequence, CURLOPT_PROTOCOLS_STR and CURLOPT_REDIR_PROTOCOLS_STR
both now also support NULL as a way to restore back to default values.

In curl.h: remove the OBSOLETE named values from the setopt list.
bagder added a commit that referenced this pull request Aug 22, 2024
Previously this test allowed a few error values when setting a pointer
setopt to NULL, which made this test miss #14629.

Now, no errors are accepted for setopts - but now we also check that the
variable exists before setting it.

As a consequence, CURLOPT_PROTOCOLS_STR and CURLOPT_REDIR_PROTOCOLS_STR
both now also support NULL as a way to restore back to default values.

In curl.h: remove the OBSOLETE named values from the setopt list.

Closes #14634
bagder added a commit that referenced this pull request Aug 22, 2024
Previously this test allowed several error values when setting options.
This made this test miss #14629.

Now, errors are generally not accepted for setopts:

 - numerical setopts accept CURLE_BAD_FUNCTION_ARGUMENT for funny input
 - the first setopt to an option accepts CURLE_NOT_BUILT_IN or
   CURLE_UNKNOWN_OPTION for when they are disabled/not built-in
 - there is an allowlist concept for some return code for some variables,
   managed at the top of the mk-lib1521.pl script

In curl.h: remove the OBSOLETE named values from the setopt list.

Closes #14634
bagder added a commit that referenced this pull request Aug 22, 2024
Previously this test allowed several error values when setting options.
This made this test miss #14629.

Now, errors are generally not accepted for setopts:

 - numerical setopts accept CURLE_BAD_FUNCTION_ARGUMENT for funny input
 - the first setopt to an option accepts CURLE_NOT_BUILT_IN or
   CURLE_UNKNOWN_OPTION for when they are disabled/not built-in
 - there is an allowlist concept for some return code for some variables,
   managed at the top of the mk-lib1521.pl script

In curl.h: remove the OBSOLETE named values from the setopt list.

Closes #14634
bagder added a commit that referenced this pull request Aug 23, 2024
Previously this test allowed several error values when setting options.
This made this test miss #14629.

Now, errors are generally not accepted for setopts:

 - numerical setopts accept CURLE_BAD_FUNCTION_ARGUMENT for funny input
 - the first setopt to an option accepts CURLE_NOT_BUILT_IN or
   CURLE_UNKNOWN_OPTION for when they are disabled/not built-in
 - there is an allowlist concept for some return code for some variables,
   managed at the top of the mk-lib1521.pl script

In curl.h: remove the OBSOLETE named values from the setopt list.

Closes #14634
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