feat(go): profiles are now configured by an info.json file

go/profile/info.go

@@ -0,0 +1,72 @@
+package profile
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"slices"
+	"strconv"
+)
+
+var (
+	valid_os = []string{
+		"windows",
+		"darwin",
+		"linux",
+	}
+
+	valid_arch = []string{
+		"386",
+		"amd64",
+		"ppc",
+	}
+)
+
+type info_schema struct {
+	OS         string `json:"os"`
+	Arch       string `json:"arch"`
+	ModuleName string `json:"module_name"`
+	ModuleBase string `json:"module_base"`
+}
+
+type Info struct {
+	OS         string
+	Arch       string
+	ModuleName string
+	ModuleBase uint64
+}
+
+func read_info(filename string, info *Info) (err error) {
+	var b []byte
+	b, err = os.ReadFile(filename)
+	if err != nil {
+		return
+	}
+	var is info_schema
+	err = json.Unmarshal(b, &is)
+	if err != nil {
+		return
+	}
+
+	if !slices.Contains(valid_os, is.OS) {
+		err = fmt.Errorf("profile: invalid os '%s'", is.OS)
+		return
+	}
+
+	if !slices.Contains(valid_arch, is.Arch) {
+		err = fmt.Errorf("profile: invalid arch '%s'", is.Arch)
+		return
+	}
+
+	info.ModuleName = is.ModuleName
+
+	info.OS = is.OS
+	info.Arch = is.Arch
+
+	info.ModuleBase, err = strconv.ParseUint(is.ModuleBase, 16, 64)
+	if err != nil {
+		return
+	}
+
+	return
+}