diff options
author | Francis Lavoie <[email protected]> | 2020-04-27 16:46:46 -0400 |
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committer | GitHub <[email protected]> | 2020-04-27 14:46:46 -0600 |
commit | 5ae1a5617c4bb1deef22cb3658ee581bb7dbf367 (patch) | |
tree | 84bb5582a6b1f961ad670f290d020b747ff26cee /modules/caddyhttp/fileserver/matcher.go | |
parent | 83c85c53f583906e438bb9eb30fc0ab57bf59108 (diff) | |
download | caddy-5ae1a5617c4bb1deef22cb3658ee581bb7dbf367.tar.gz caddy-5ae1a5617c4bb1deef22cb3658ee581bb7dbf367.zip |
caddyhttp: Add split_path to file matcher (used by php_fastcgi) (#3302)
* matcher: Add `split_path` option to file matcher; used in php_fastcgi
* matcher: Skip try_files split if not the final part of the filename
* matcher: Add MatchFile tests
* matcher: Clarify SplitPath godoc
Diffstat (limited to 'modules/caddyhttp/fileserver/matcher.go')
-rw-r--r-- | modules/caddyhttp/fileserver/matcher.go | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/modules/caddyhttp/fileserver/matcher.go b/modules/caddyhttp/fileserver/matcher.go index 1915fb70e..1beb8bac9 100644 --- a/modules/caddyhttp/fileserver/matcher.go +++ b/modules/caddyhttp/fileserver/matcher.go @@ -68,6 +68,17 @@ type MatchFile struct { // // Default is first_exist. TryPolicy string `json:"try_policy,omitempty"` + + // A list of delimiters to use to split the path in two + // when trying files. If empty, no splitting will + // occur, and the path will be tried as-is. For each + // split value, the left-hand side of the split, + // including the split value, will be the path tried. + // For example, the path `/remote.php/dav/` using the + // split value `.php` would try the file `/remote.php`. + // Each delimiter must appear at the end of a URI path + // component in order to be used as a split delimiter. + SplitPath []string `json:"split_path,omitempty"` } // CaddyModule returns the Caddy module information. @@ -105,6 +116,11 @@ func (m *MatchFile) UnmarshalCaddyfile(d *caddyfile.Dispenser) error { return d.ArgErr() } m.TryPolicy = d.Val() + case "split": + m.SplitPath = d.RemainingArgs() + if len(m.SplitPath) == 0 { + return d.ArgErr() + } } } } @@ -167,7 +183,7 @@ func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) { switch m.TryPolicy { case "", tryPolicyFirstExist: for _, f := range m.TryFiles { - suffix := path.Clean(repl.ReplaceAll(f, "")) + suffix := m.firstSplit(path.Clean(repl.ReplaceAll(f, ""))) fullpath := sanitizedPathJoin(root, suffix) if strictFileExists(fullpath) { return suffix, fullpath, true @@ -179,7 +195,7 @@ func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) { var largestFilename string var largestSuffix string for _, f := range m.TryFiles { - suffix := path.Clean(repl.ReplaceAll(f, "")) + suffix := m.firstSplit(path.Clean(repl.ReplaceAll(f, ""))) fullpath := sanitizedPathJoin(root, suffix) info, err := os.Stat(fullpath) if err == nil && info.Size() > largestSize { @@ -195,7 +211,7 @@ func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) { var smallestFilename string var smallestSuffix string for _, f := range m.TryFiles { - suffix := path.Clean(repl.ReplaceAll(f, "")) + suffix := m.firstSplit(path.Clean(repl.ReplaceAll(f, ""))) fullpath := sanitizedPathJoin(root, suffix) info, err := os.Stat(fullpath) if err == nil && (smallestSize == 0 || info.Size() < smallestSize) { @@ -211,7 +227,7 @@ func (m MatchFile) selectFile(r *http.Request) (rel, abs string, matched bool) { var recentFilename string var recentSuffix string for _, f := range m.TryFiles { - suffix := path.Clean(repl.ReplaceAll(f, "")) + suffix := m.firstSplit(path.Clean(repl.ReplaceAll(f, ""))) fullpath := sanitizedPathJoin(root, suffix) info, err := os.Stat(fullpath) if err == nil && @@ -256,6 +272,26 @@ func strictFileExists(file string) bool { return !stat.IsDir() } +// firstSplit returns the first result where the path +// can be split in two by a value in m.SplitPath. The +// result is the first piece of the path that ends with +// in the split value. Returns the path as-is if the +// path cannot be split. +func (m MatchFile) firstSplit(path string) string { + lowerPath := strings.ToLower(path) + for _, split := range m.SplitPath { + if idx := strings.Index(lowerPath, strings.ToLower(split)); idx > -1 { + pos := idx + len(split) + // skip the split if it's not the final part of the filename + if pos != len(path) && !strings.HasPrefix(path[pos:], "/") { + continue + } + return path[:pos] + } + } + return path +} + const ( tryPolicyFirstExist = "first_exist" tryPolicyLargestSize = "largest_size" |