Error setting tls_config for LDAP

[mheppner]

Describe the bug

Similar to #688, setting tls_config for auth.ldap results in a crash:

panic: reflect.Set: value of type *tls.Config is not assignable to type tls.Config

Steps to reproduce

I have a self-signed certificated used by LDAP, and the corresponding CA certificate. Setting the root_ca for LDAP results in a crash. #709 could also help with this setup.

Log file

panic: reflect.Set: value of type *tls.Config is not assignable to type tls.Config

goroutine 1 [running]:
reflect.Value.assignTo({0x4cb4c0?, 0x8701bad20?, 0x870297410?}, {0x51e336, 0xb}, 0x4fd660, 0x0)
	reflect/value.go:3072 +0x28b
reflect.Value.Set({0x4fd660?, 0x8703970c0?, 0x8700138a8?}, {0x4cb4c0?, 0x8701bad20?, 0x87028a860?})
	reflect/value.go:2057 +0xe6
github.com/foxcpp/maddy/framework/config.(*matcher).assign(0x37e1e0?, {0x4cb4c0?, 0x8701bad20?})
	github.com/foxcpp/maddy/framework/config/map.go:49 +0xe5
github.com/foxcpp/maddy/framework/config.(*Map).ProcessWith(0x8700eac80, 0x8703a7cb0, {{0x8703bd540, 0x9}, {0x8703ca0e0, 0x1, 0x1}, {0x8703a2c88, 0x6, 0x6}, ...})
	github.com/foxcpp/maddy/framework/config/map.go:687 +0x4f9
github.com/foxcpp/maddy/framework/config.(*Map).Process(...)
	github.com/foxcpp/maddy/framework/config/map.go:649
github.com/foxcpp/maddy/internal/auth/ldap.(*Auth).Init(0x870397088, 0x8700eac80)
	github.com/foxcpp/maddy/internal/auth/ldap/ldap.go:73 +0x498
github.com/foxcpp/maddy/framework/module.GetInstance({0x8703d96f1, 0xa})
	github.com/foxcpp/maddy/framework/module/instances.go:91 +0xea
github.com/foxcpp/maddy/framework/config/module.ModuleFromNode({0x50f718?, 0xf2abc5?}, {0x8703ca230, 0xfd8e06?, 0x441320?}, {{0x8703d96a8, 0x4}, {0x8703ca230, 0x1, 0x1}, ...}, ...)
	github.com/foxcpp/maddy/framework/config/module/modconfig.go:120 +0x118
github.com/foxcpp/maddy/internal/auth.(*SASLAuth).AddProvider(0x8704029a0, 0x870322200, {{0x8703d96a8, 0x4}, {0x8703ca230, 0x1, 0x1}, {0x0, 0x0, 0x0}, ...})
	github.com/foxcpp/maddy/internal/auth/sasl.go:187 +0xb4
github.com/foxcpp/maddy/internal/endpoint/smtp.(*Endpoint).setConfig.func1(0x870322200?, {{0x8703d96a8, 0x4}, {0x8703ca230, 0x1, 0x1}, {0x0, 0x0, 0x0}, 0x0, ...})
	github.com/foxcpp/maddy/internal/endpoint/smtp/smtp.go:246 +0x3e
github.com/foxcpp/maddy/framework/config.(*Map).ProcessWith(0x870322200, 0x8703a7cb0, {{0x8703d9410, 0xa}, {0x8703cfbe0, 0x2, 0x2}, {0x8703b7080, 0x4, 0x4}, ...})
	github.com/foxcpp/maddy/framework/config/map.go:669 +0x37d
github.com/foxcpp/maddy/framework/config.(*Map).Process(...)
	github.com/foxcpp/maddy/framework/config/map.go:649
github.com/foxcpp/maddy/internal/endpoint/smtp.(*Endpoint).setConfig(0x8704029a0, 0x870322200)
	github.com/foxcpp/maddy/internal/endpoint/smtp/smtp.go:284 +0x6f8
github.com/foxcpp/maddy/internal/endpoint/smtp.(*Endpoint).Init(0x8704029a0, 0x870322200)
	github.com/foxcpp/maddy/internal/endpoint/smtp/smtp.go:110 +0x1bf
github.com/foxcpp/maddy.initModules(0x8703a7cb0, {0x87040a380?, 0x9?, 0x10777d4?}, {0x870401c08, 0x6, 0x82225a2d7?})
	github.com/foxcpp/maddy/maddy.go:409 +0x156
github.com/foxcpp/maddy.moduleMain({0x8703cc608?, 0x87006a438?, 0x82225a2d7?})
	github.com/foxcpp/maddy/maddy.go:327 +0x95
github.com/foxcpp/maddy.Run(0x870094980)
	github.com/foxcpp/maddy/maddy.go:207 +0x3e5
github.com/urfave/cli/v2.(*Command).Run(0x8700ec420, 0x870094980, {0x870047190, 0x1, 0x1})
	github.com/urfave/cli/v2@v2.27.5/command.go:276 +0x7be
github.com/urfave/cli/v2.(*Command).Run(0x8703badc0, 0x870094740, {0x870148120, 0x6, 0x6})
	github.com/urfave/cli/v2@v2.27.5/command.go:269 +0xa45
github.com/urfave/cli/v2.(*App).RunContext(0x8700d6200, {0x7088e0, 0x1de9ee0}, {0x870148120, 0x6, 0x6})
	github.com/urfave/cli/v2@v2.27.5/app.go:333 +0x5a5
github.com/urfave/cli/v2.(*App).Run(...)
	github.com/urfave/cli/v2@v2.27.5/app.go:307
github.com/foxcpp/maddy/internal/cli.Run()
	github.com/foxcpp/maddy/internal/cli/app.go:110 +0x1a5
main.main()
	github.com/foxcpp/maddy/cmd/maddy/main.go:28 +0x

Configuration file

auth.ldap lldap_auth {
    urls ldaps://127.0.0.1:6360
    tls_client {
        root_ca /usr/local/etc/ca.crt
    }
}

Environment information

• maddy version: v0.8.2 freebsd/amd64 go1.24.13