fastcgi: Make sure splitPos handles empty SplitPath correctly #3491
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In commit f2ce81c, support for multiple path splitters was added. The type of SplitPath changed from string to []string, and splitPos was changed to loop through all values in SplitPath. Before that commit, if SplitPath was empty, strings.Index returned 0 and PATH_INFO was set correctly in buildEnv. Currently, however, splitPos returns -1 for empty values of SplitPath, behaving as if a split position could not be found at all. PATH_INFO is then never set in buildEnv and remains empty. Restore the old behaviour by explicitly checking whether SplitPath is empty and returning 0 in splitPos. Closes caddyserver#3490
mholt
approved these changes
Jun 12, 2020
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Excellent, thank you -- I'll let @francislavoie give it a once-over as well.
francislavoie
approved these changes
Jun 12, 2020
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Yes, we wish for more bug reports and contributions following this pattern. 🙂 Thank you! |
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In commit f2ce81c, support for multiple path splitters was added. The
type of SplitPath changed from string to []string, and splitPos was
changed to loop through all values in SplitPath.
Before that commit, if SplitPath was empty, strings.Index returned 0 and
PATH_INFO was set correctly in buildEnv.
Currently, however, splitPos returns -1 for empty values of SplitPath,
behaving as if a split position could not be found at all. PATH_INFO is
then never set in buildEnv and remains empty.
Restore the old behaviour by explicitly checking whether SplitPath is
empty and returning 0 in splitPos.
Closes #3490