Plugins work now oughghgghughgghg

cmd/stepd/main.go

@@ -129,29 +129,31 @@ func main () {
 		Config: config,
 	}
 	environment.Providers = providers.All()
-	err := environment.Init(context.Background())
-	if err != nil { log.Fatal(err) }
 
 	// load plugins
-	for _, pat := range pluginPath {
-		entries, err := os.ReadDir(pat)
-		if err != nil { continue }
-		for _, entry := range entries {
-			pluginPath := filepath.Join(pat, entry.Name())
-			ext := filepath.Ext(pluginPath)
-			if ext != ".so" { continue }
-			if flagUnsafePlugins.Value == "true" {
-				_, err = environment.LoadProviderPluginUnsafe(pluginPath)
-			} else {
-				_, err = environment.LoadProviderPlugin(pluginPath)
-			}
-			if err != nil {
+	var err     error
+	var plugins []step.Provider
+	if flagUnsafePlugins.Value == "true" {
+		plugins, err = step.LoadAllProviderPluginsUnsafe(pluginPath...)
+	} else {
+		plugins, err = step.LoadAllProviderPlugins(pluginPath...)
+	}
+	if err != nil {
+		if errs, ok := err.(step.Errors); ok {
+			for _, err := range errs.Unwrap() {
 				log.Println("!!!", err)
 			}
+		} else {
+			log.Println("!!!", err)
 		}
 	}
+	environment.Providers = append(environment.Providers, plugins...)
 	logProviders(environment.Providers)
 
+	// initialize the environment
+	err = environment.Init(context.Background())
+	if err != nil { log.Fatal(err) }
+
 	// set up the HTTP handler
 	handler := stephttp.Handler {
 		Environment:       &environment,

environment.go

@@ -5,9 +5,7 @@ import "io"
 import "fmt"
 import "time"
 import "io/fs"
-import "plugin"
 import "errors"
-import "syscall"
 import "context"
 import "path/filepath"
 import "html/template"
@@ -105,55 +103,6 @@ func (this *Environment) Unload (name string) {
 	delete(documents, name)
 }
 
-// LoadProviderPlugin loads a plugin given its file path. The file must:
-//
-//   - Be a shared library
-//   - Be built with go -buildmode=plugin
-//   - Be built with the same version of Go
-//   - Be built with the same version of STEP
-//   - Be owned by root
-//
-// Plugins cannot be unloaded from the current program once they are loaded.
-// Sorgy :( its Go's fault.
-func (this *Environment) LoadProviderPlugin (name string) (Provider, error) {
-	return this.loadProviderPlugin(name, true)
-}
-
-// LoadProviderPluginUnsafe is like LoadProviderPlugin, but does not check to
-// see that the file is owned by root, thereby making it easier to run a random
-// plugin you just compiled. This should not be used otherwise.
-func (this *Environment) LoadProviderPluginUnsafe (name string) (Provider, error) {
-	return this.loadProviderPlugin(name, false)
-}
-
-func (this *Environment) loadProviderPlugin (name string, checkRoot bool) (Provider, error) {
-	plugin, err := this.loadPlugin(name, checkRoot)
-	if err != nil { return nil, err }
-	providerSymbol, err := plugin.Lookup("NewProvider")
-	if err != nil { return nil, err }
-	providerFactory, ok := providerSymbol.(func () Provider)
-	if !ok { return nil, ErrPluginBadSymbol }
-	provider := providerFactory()
-	this.Providers = append(this.Providers, provider)
-	return provider, nil
-}
-
-func (this *Environment) loadPlugin (name string, checkRoot bool) (*plugin.Plugin, error) {
-	name = filepath.Clean(name)
-	if checkRoot {
-		info, err := os.Stat(name)
-		if err != nil { return nil, err }
-		if info, ok := info.Sys().(*syscall.Stat_t); ok {
-			if info.Uid != 0 {
-				return nil, ErrPluginNotOwnedByRoot
-			}
-		} else {
-			return nil, ErrInsufficientSystem
-		}
-	}
-	return plugin.Open(name)
-}
-
 func (this *Environment) parse (name string, modTime time.Time, input io.Reader) (*Document, error) {
 	documents, done := this.documents.Borrow()
 	defer done()

error.go

@@ -8,6 +8,7 @@ type Error string; const (
 	ErrTypeMismatch         Error = "type mismatch"
 	ErrPluginBadSymbol      Error = "plugin has an incorrect symbol"
 	ErrPluginNotOwnedByRoot Error = "plugin is not owned by the root user"
+	ErrPathNotAbsolute      Error = "path is not absolute"
 	ErrInsufficientSystem   Error = "the system cannot perform this action"
 )
 
@@ -15,3 +16,8 @@ type Error string; const (
 func (err Error) Error () string {
 	return string(err)
 }
+
+// Errors is any error that unwraps to a list of sub-errors.
+type Errors interface {
+	Unwrap () []error
+}

plugin.go

@@ -0,0 +1,98 @@
+package step
+
+import "os"
+import "errors"
+import "plugin"
+import "syscall"
+import "path/filepath"
+
+// LoadAllProviderPlugins loads all plugins according to the given search path.
+// 
+// If a non-nil error is returned, the error should be treated as a list of
+// warning messages and the return value should be used normally.
+func LoadAllProviderPlugins (pluginPath ...string) ([]Provider, error) {
+	return loadAllProviderPlugins(pluginPath, true)
+}
+
+// LoadAllProviderPluginsUnsafe is like LoadAllProviderPlugins, but does not
+// check to see that the files are owned by root, thereby making it easier to
+// run a random plugin you just compiled. This should not be used otherwise.
+// 
+// If a non-nil error is returned, the error should be treated as a list of
+// warning messages and the return value should be used normally.
+func LoadAllProviderPluginsUnsafe (pluginPath ...string) ([]Provider, error) {
+	return loadAllProviderPlugins(pluginPath, false)
+}
+
+func loadAllProviderPlugins (pluginPath []string, checkRoot bool) ([]Provider, error) {
+	providers := []Provider { }
+	errs := []error { }
+	for _, pat := range pluginPath {
+		entries, err := os.ReadDir(pat)
+		if err != nil { continue }
+		for _, entry := range entries {
+			pluginPath := filepath.Join(pat, entry.Name())
+			ext := filepath.Ext(pluginPath)
+			if ext != ".so" { continue }
+			provider, err := loadProviderPlugin(pluginPath, checkRoot)
+			if err != nil {
+				errs = append(errs, err)
+				continue
+			}
+			providers = append(providers, provider)
+		}
+	}
+	return providers, errors.Join(errs...)
+}
+
+// LoadProviderPlugin loads a plugin given its file path. The file must:
+//
+//   - Be a shared library
+//   - Be addressed with an absolute path
+//   - Be built with go -buildmode=plugin
+//   - Be built with the same version of Go
+//   - Be built with the same version of STEP
+//   - Be owned by root
+//
+// Plugins cannot be unloaded from the current program once they are loaded.
+// Sorgy :( its Go's fault.
+func LoadProviderPlugin (name string) (Provider, error) {
+	return loadProviderPlugin(name, true)
+}
+
+// LoadProviderPluginUnsafe is like LoadProviderPlugin, but does not check to
+// see that the file is owned by root, thereby making it easier to run a random
+// plugin you just compiled. This should not be used otherwise.
+func LoadProviderPluginUnsafe (name string) (Provider, error) {
+	return loadProviderPlugin(name, false)
+}
+
+func loadProviderPlugin (name string, checkRoot bool) (Provider, error) {
+	plugin, err := loadPlugin(name, checkRoot)
+	if err != nil { return nil, err }
+	providerSymbol, err := plugin.Lookup("NewProvider")
+	if err != nil { return nil, err }
+	providerFactory, ok := providerSymbol.(func () Provider)
+	if !ok { return nil, ErrPluginBadSymbol }
+	provider := providerFactory()
+	return provider, nil
+}
+
+func loadPlugin (name string, checkRoot bool) (*plugin.Plugin, error) {
+	name = filepath.Clean(name)
+	if !filepath.IsAbs(name) {
+		return nil, ErrPathNotAbsolute
+	}
+	if checkRoot {
+		info, err := os.Stat(name)
+		if err != nil { return nil, err }
+		if info, ok := info.Sys().(*syscall.Stat_t); ok {
+			if info.Uid != 0 {
+				return nil, ErrPluginNotOwnedByRoot
+			}
+		} else {
+			return nil, ErrInsufficientSystem
+		}
+	}
+	return plugin.Open(name)
+}