diff options
Diffstat (limited to 'modules/caddyhttp/rewrite/rewrite.go')
| -rw-r--r-- | modules/caddyhttp/rewrite/rewrite.go | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/modules/caddyhttp/rewrite/rewrite.go b/modules/caddyhttp/rewrite/rewrite.go index abcaa84..e2d57c4 100644 --- a/modules/caddyhttp/rewrite/rewrite.go +++ b/modules/caddyhttp/rewrite/rewrite.go @@ -112,7 +112,7 @@ func (rewr Rewrite) rewrite(r *http.Request, repl *caddy.Replacer, logger *zap.L r.Method = strings.ToUpper(repl.ReplaceAll(rewr.Method, "")) } - // uri (path, query string, and fragment just because) + // uri (path, query string, and fragment... because why not) if uri := rewr.URI; uri != "" { // find the bounds of each part of the URI that exist pathStart, qsStart, fragStart := -1, -1, -1 @@ -134,14 +134,30 @@ func (rewr Rewrite) rewrite(r *http.Request, repl *caddy.Replacer, logger *zap.L qsEnd = len(uri) } + // build components which are specified, and store them + // in a temporary variable so that they all read the + // same version of the URI + var newPath, newQuery, newFrag string if pathStart >= 0 { - r.URL.Path = repl.ReplaceAll(uri[pathStart:pathEnd], "") + newPath = repl.ReplaceAll(uri[pathStart:pathEnd], "") } if qsStart >= 0 { - r.URL.RawQuery = buildQueryString(uri[qsStart:qsEnd], repl) + newQuery = buildQueryString(uri[qsStart:qsEnd], repl) } if fragStart >= 0 { - r.URL.Fragment = repl.ReplaceAll(uri[fragStart:], "") + newFrag = repl.ReplaceAll(uri[fragStart:], "") + } + + // update the URI with the new components + // only after building them + if pathStart >= 0 { + r.URL.Path = newPath + } + if qsStart >= 0 { + r.URL.RawQuery = newQuery + } + if fragStart >= 0 { + r.URL.Fragment = newFrag } } @@ -206,7 +222,7 @@ func buildQueryString(qs string, repl *caddy.Replacer) string { // if previous iteration wrote a value, // that means we are writing a key if wroteVal { - if sb.Len() > 0 { + if sb.Len() > 0 && len(comp) > 0 { sb.WriteRune('&') } } else { |