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|
package cgi
import (
"context"
"fmt"
"strings"
"tildegit.org/tjp/gus"
"tildegit.org/tjp/gus/gopher"
)
// GopherCGIDirectory runs any executable files relative to a root directory on the file system.
//
// It will also find and run any executables part way through the path, so for example
// a request for /foo/bar/baz can also run an executable found at /foo or /foo/bar. In
// such a case the PATH_INFO environment variable will include the remaining portion of
// the URI path.
func GopherCGIDirectory(pathRoot, fsRoot string) gus.Handler {
fsRoot = strings.TrimRight(fsRoot, "/")
return func(ctx context.Context, request *gus.Request) *gus.Response {
if !strings.HasPrefix(request.Path, pathRoot) {
return nil
}
filepath, pathinfo, err := ResolveCGI(request.Path[len(pathRoot):], fsRoot)
if err != nil {
return gopher.Error(err).Response()
}
if filepath == "" {
return nil
}
stdout, exitCode, err := RunCGI(ctx, request, filepath, pathinfo)
if err != nil {
return gopher.Error(err).Response()
}
if exitCode != 0 {
return gopher.Error(
fmt.Errorf("CGI process exited with status %d", exitCode),
).Response()
}
return gopher.File(0, stdout)
}
}
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