Merge pull request #1 from thefeli73/basic-functionality

AWS Indexing

.gitignore

@@ -13,3 +13,10 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+#protect secrets
+*.env
+*.credentials
+
+
+config.yaml

config.default.yaml

@@ -0,0 +1,5 @@
+mtd:
+    services: []
+aws:
+    regions: []
+    credentials_path: ./mtdaws/.credentials

go.mod

@@ -2,6 +2,24 @@ module github.com/thefeli73/polemos
 
 go 1.20
 
-require github.com/aws/aws-sdk-go v1.44.220
+require (
+	github.com/aws/aws-sdk-go-v2 v1.17.6
+	github.com/aws/aws-sdk-go-v2/config v1.18.17
+	github.com/aws/aws-sdk-go-v2/service/ec2 v1.90.0
+	github.com/google/uuid v1.3.0
+	gopkg.in/yaml.v3 v3.0.1
+)
 
-require github.com/jmespath/go-jmespath v0.4.0 // indirect
+require (
+	github.com/aws/aws-sdk-go-v2/credentials v1.13.17 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.0 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.30 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.24 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.31 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.24 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.12.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.14.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.18.6 // indirect
+	github.com/aws/smithy-go v1.13.5 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+)

go.sum

@@ -1,42 +1,45 @@
-github.com/aws/aws-sdk-go v1.44.220 h1:yAj99qAt0Htjle9Up3DglgHfOP77lmFPrElA4jKnrBo=
+github.com/aws/aws-sdk-go-v2 v1.17.6 h1:Y773UK7OBqhzi5VDXMi1zVGsoj+CVHs2eaC2bDsLwi0=
-github.com/aws/aws-sdk-go v1.44.220/go.mod h1:aVsgQcEevwlmQ7qHE9I3h+dtQgpqhFB+i8Phjh7fkwI=
+github.com/aws/aws-sdk-go-v2 v1.17.6/go.mod h1:uzbQtefpm44goOPmdKyAlXSNcwlRgF3ePWVW6EtJvvw=
+github.com/aws/aws-sdk-go-v2/config v1.18.17 h1:jwTkhULSrbr/SQA8tfdYqZxpG8YsRycmIXxJcbrqY5E=
+github.com/aws/aws-sdk-go-v2/config v1.18.17/go.mod h1:Lj3E7XcxJnxMa+AYo89YiL68s1cFJRGduChynYU67VA=
+github.com/aws/aws-sdk-go-v2/credentials v1.13.17 h1:IubQO/RNeIVKF5Jy77w/LfUvmmCxTnk2TP1UZZIMiF4=
+github.com/aws/aws-sdk-go-v2/credentials v1.13.17/go.mod h1:K9xeFo1g/YPMguMUD69YpwB4Nyi6W/5wn706xIInJFg=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.0 h1:/2Cb3SK3xVOQA7Xfr5nCWCo5H3UiNINtsVvVdk8sQqA=
+github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.13.0/go.mod h1:neYVaeKr5eT7BzwULuG2YbLhzWZ22lpjKdCybR7AXrQ=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.30 h1:y+8n9AGDjikyXoMBTRaHHHSaFEB8267ykmvyPodJfys=
+github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.30/go.mod h1:LUBAO3zNXQjoONBKn/kR1y0Q4cj/D02Ts0uHYjcCQLM=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.24 h1:r+Kv+SEJquhAZXaJ7G4u44cIwXV3f8K+N482NNAzJZA=
+github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.4.24/go.mod h1:gAuCezX/gob6BSMbItsSlMb6WZGV7K2+fWOvk8xBSto=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.3.31 h1:hf+Vhp5WtTdcSdE+yEcUz8L73sAzN0R+0jQv+Z51/mI=
+github.com/aws/aws-sdk-go-v2/internal/ini v1.3.31/go.mod h1:5zUjguZfG5qjhG9/wqmuyHRyUftl2B5Cp6NNxNC6kRA=
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+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.24 h1:c5qGfdbCHav6viBwiyDns3OXqhqAbGjfIB4uVu2ayhk=
+github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.9.24/go.mod h1:HMA4FZG6fyib+NDo5bpIxX1EhYjrAOveZJY2YR0xrNE=
+github.com/aws/aws-sdk-go-v2/service/sso v1.12.5 h1:bdKIX6SVF3nc3xJFw6Nf0igzS6Ff/louGq8Z6VP/3Hs=
+github.com/aws/aws-sdk-go-v2/service/sso v1.12.5/go.mod h1:vuWiaDB30M/QTC+lI3Wj6S/zb7tpUK2MSYgy3Guh2L0=
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 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
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 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
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 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
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main.go

@@ -1,8 +1,61 @@
 package main
 
 import (
-	"github.com/thefeli73/polemos/mtd_aws"
+	"fmt"
+	"net/netip"
+
+	"github.com/google/uuid"
+	"github.com/thefeli73/polemos/mtdaws"
+	"github.com/thefeli73/polemos/state"
 )
+
+// ConfigPath is a string of the location for the configfile
+var ConfigPath string
+
 func main() {
-    var _ = mtd_aws.Session()
+	fmt.Println("Starting Polemos")
-}
+
+	ConfigPath = "config.yaml"
+	
+	config := state.LoadConf(ConfigPath)
+	state.SaveConf(ConfigPath, config)
+
+	config = indexInstances(config)
+
+}
+
+func indexInstances(config state.Config) state.Config {
+	fmt.Println("Indexing instances")
+
+	//index AWS instances
+	awsInstances := mtdaws.GetInstances(config)
+	for _, instance := range awsInstances {
+		cloudID := mtdaws.GetCloudID(instance)
+		ip, err := netip.ParseAddr(instance.PublicIP)
+		if err != nil {
+			fmt.Println("Error converting ip:", err)
+			continue
+		}
+		newService, found := indexInstance(config, cloudID, ip)
+		if !found {
+			config.MTD.Services = append(config.MTD.Services, newService)
+			state.SaveConf(ConfigPath, config)
+		}
+	}
+	return config
+}
+
+func indexInstance(config state.Config, cloudID string, serviceIP netip.Addr) (state.Service, bool) {
+	found := false
+	for _, service := range config.MTD.Services {
+		if service.CloudID == cloudID {
+			found = true
+		}
+	}
+	u := uuid.New()
+	newService := state.Service{
+		ID: state.CustomUUID(u),
+		CloudID: cloudID,
+		ServiceIP: serviceIP}
+	return newService, found
+}

mtd_aws/sdk.go

@@ -1,12 +0,0 @@
-package mtd_aws
-
-import (
-	//"github.com/aws/aws-sdk-go/aws"
-	"github.com/aws/aws-sdk-go/aws/session"
-)
-func Session() *session.Session {
-	session := session.Must(session.NewSessionWithOptions(session.Options{
-		SharedConfigState: session.SharedConfigEnable,
-	}))
-	return session
-}

mtdaws/utils.go

@@ -0,0 +1,102 @@
+package mtdaws
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/aws/aws-sdk-go-v2/aws"
+	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go-v2/service/ec2"
+	"github.com/aws/aws-sdk-go-v2/service/ec2/types"
+	"github.com/thefeli73/polemos/state"
+)
+
+// AwsInstance is basic info about a single aws instance (instance id, redion, pubIP and privIP)
+type AwsInstance struct {
+	InstanceID 		string
+	Region			string
+	PublicIP		string
+	PrivateIP		string
+}
+
+// NewConfig creates a AWS config for a specific region
+func NewConfig(region string, credentials string) aws.Config {
+	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithSharedConfigFiles([]string{credentials}), config.WithRegion(region))
+	if err != nil {
+		fmt.Println("Error creating config:", err)
+		fmt.Println("Configure Credentials in line with the documentation found here: https://aws.github.io/aws-sdk-go-v2/docs/configuring-sdk/#specifying-credentials")
+		os.Exit(1)
+	}
+	return cfg
+}
+
+// GetCloudID returns a string to find the instance based on information from aws
+func GetCloudID(instance AwsInstance) string {
+	return "aws_" + instance.Region + "_" + instance.InstanceID
+}
+
+// GetInstances scans all configured regions for instances and add them to services
+func GetInstances(config state.Config) []AwsInstance {
+	awsInstances := []AwsInstance{}
+	for _, region := range config.AWS.Regions {
+		awsConfig := NewConfig(region, config.AWS.CredentialsPath)
+		instances, err := Instances(awsConfig)
+		if err != nil {
+			fmt.Println("Error listing instances:", err)
+			continue
+		}
+
+		//fmt.Println("Listing instances in region:", region)
+		for _, instance := range instances {
+			var publicAddr string
+			if instance.PublicIpAddress != nil {
+				publicAddr = aws.ToString(instance.PublicIpAddress)
+			}
+			awsInstances = append(awsInstances, AwsInstance{
+				InstanceID: aws.ToString(instance.InstanceId),
+				Region: region,
+				PublicIP: publicAddr, 
+				PrivateIP: aws.ToString(instance.PrivateIpAddress)})
+		}
+	}
+	return awsInstances
+}
+
+// PrintInstanceInfo prints info about a specific instance in a region
+func PrintInstanceInfo(instance *types.Instance) {
+	fmt.Println("\tInstance ID:", aws.ToString(instance.InstanceId))
+	fmt.Println("\t\tInstance Type:", string(instance.InstanceType))
+	fmt.Println("\t\tAMI ID:", aws.ToString(instance.ImageId))
+	fmt.Println("\t\tState:", string(instance.State.Name))
+	fmt.Println("\t\tAvailability Zone:", aws.ToString(instance.Placement.AvailabilityZone))
+	if instance.PublicIpAddress != nil {
+		fmt.Println("\t\tPublic IP Address:", aws.ToString(instance.PublicIpAddress))
+	}
+	fmt.Println("\t\tPrivate IP Address:", aws.ToString(instance.PrivateIpAddress))
+}
+
+// Instances returns all instances for a config i.e. a region
+func Instances(config aws.Config) ([]*types.Instance, error) {
+	svc := ec2.NewFromConfig(config)
+
+	input := &ec2.DescribeInstancesInput{}
+	var instances []*types.Instance
+
+	paginator := ec2.NewDescribeInstancesPaginator(svc, input)
+
+	for paginator.HasMorePages() {
+		page, err := paginator.NextPage(context.TODO())
+		if err != nil {
+			return nil, err
+		}
+
+		for _, reservation := range page.Reservations {
+			for _, instance := range reservation.Instances {
+				instances = append(instances, &instance)
+			}
+		}
+	}
+
+	return instances, nil
+}

state/config.go

@@ -0,0 +1,93 @@
+package state
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/netip"
+	"os"
+
+	"github.com/google/uuid"
+	"gopkg.in/yaml.v3"
+)
+
+// Config contains all MTD services and cloud provider configs
+type Config struct {
+    MTD             mtdconf     `yaml:"mtd"`
+    AWS             aws         `yaml:"aws"`
+}
+
+type mtdconf struct {
+    Services        []Service   `yaml:"services"`
+}
+
+// Service contains all necessary information about a service to identify it in the cloud as well as configuring a proxy for it
+type Service struct {
+    ID              CustomUUID  `yaml:"id"`
+    CloudID         string      `yaml:"cloud_id"`
+    EntryIP         netip.Addr  `yaml:"entry_ip"`
+    EntryPort       uint16      `yaml:"entry_port"`
+    ServiceIP       netip.Addr  `yaml:"service_ip"`
+    ServicePort     uint16      `yaml:"service_port"`
+}
+
+// CustomUUID is an alias for uuid.UUID to enable custom unmarshal function
+type CustomUUID uuid.UUID
+
+type aws struct {
+    Regions         []string    `yaml:"regions"`
+    CredentialsPath string      `yaml:"credentials_path"`
+}
+
+// UnmarshalYAML parses uuid in yaml to CustomUUID type
+func (u *CustomUUID) UnmarshalYAML(value *yaml.Node) error {
+	id, err := uuid.Parse(value.Value)
+	if err != nil {
+		return err
+	}
+	*u = CustomUUID(id)
+	return nil
+}
+
+// MarshalYAML parses CustomUUID type to uuid string for yaml 
+func (u CustomUUID) MarshalYAML() (interface{}, error) {
+	return uuid.UUID(u).String(), nil
+}
+
+// LoadConf loads config from a yaml file
+func LoadConf(filename string) (Config) {
+    var config Config
+
+    data, err := ioutil.ReadFile(filename)
+    if err != nil {
+        fmt.Println("Error reading file:", err)
+
+		fmt.Println("Attempting to load default config")
+        data, err = ioutil.ReadFile("config.default.yaml")
+        if err != nil {
+            fmt.Println("Error reading file:", err)
+            os.Exit(1)
+        }
+    }
+
+    err = yaml.Unmarshal([]byte(data), &config)
+    if err != nil {
+        fmt.Println("Error importing config:", err)
+        os.Exit(1)
+    }
+    fmt.Println("Imported config succesfully!")
+    return config
+}
+
+// SaveConf saves config to yaml file
+func SaveConf(filename string, config Config) (error) {
+    yamlBytes, err := yaml.Marshal(&config)
+    if err != nil {
+        return err
+	}
+
+	err = ioutil.WriteFile(filename, yamlBytes, 0644)
+	if err != nil {
+        return err
+	}
+    return nil
+}