Add profile credentials provider

credentials/internal/providers/fixtures/.alibabacloud/credentials

@@ -0,0 +1,73 @@
+[default]
+enable = true
+type = access_key
+access_key_id = foo
+access_key_secret = bar
+
+[notype]
+access_key_id = foo
+access_key_secret = bar
+
+[noak]
+type = access_key
+access_key_secret = bar
+
+[emptyak]
+type = access_key
+access_key_id =
+access_key_secret = bar
+
+[ecs]
+type = ecs_ram_role
+role_name = EcsRamRoleTest
+
+[noecs]
+type = ecs_ram_role
+
+[emptyecs]
+type = ecs_ram_role
+role_name =
+
+[ram]
+type = ram_role_arn
+access_key_id = foo
+access_key_secret = bar
+role_arn = role_arn
+role_session_name = session_name
+
+[noram]
+type = ram_role_arn
+access_key_secret = bar
+role_arn = role_arn
+role_session_name = session_name
+
+[emptyram]
+type = ram_role_arn
+access_key_id =
+access_key_secret = bar
+role_arn = role_arn
+role_session_name = session_name
+
+[rsa]
+type = rsa_key_pair
+public_key_id = publicKeyId
+private_key_file = ./pk.pem
+
+[norsa]
+type = rsa_key_pair
+public_key_id = publicKeyId
+
+[emptyrsa]
+type = rsa_key_pair
+public_key_id = publicKeyId
+private_key_file =
+
+[error_rsa]
+type = rsa_key_pair
+public_key_id = publicKeyId
+private_key_file = ./pk_error.pem
+
+[error_type]
+type = error_type
+public_key_id = publicKeyId
+private_key_file = ./pk_error.pem

credentials/internal/providers/profile.go

@@ -0,0 +1,144 @@
+package providers
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path"
+
+	"github.com/aliyun/credentials-go/credentials/internal/utils"
+	"gopkg.in/ini.v1"
+)
+
+type ProfileCredentialsProvider struct {
+	profileName   string
+	innerProvider CredentialsProvider
+}
+
+type ProfileCredentialsProviderBuilder struct {
+	provider *ProfileCredentialsProvider
+}
+
+func NewProfileCredentialsProviderBuilder() (builder *ProfileCredentialsProviderBuilder) {
+	return &ProfileCredentialsProviderBuilder{
+		provider: &ProfileCredentialsProvider{},
+	}
+}
+
+func (b *ProfileCredentialsProviderBuilder) WithProfileName(profileName string) *ProfileCredentialsProviderBuilder {
+	b.provider.profileName = profileName
+	return b
+}
+
+func (b *ProfileCredentialsProviderBuilder) Build() (provider *ProfileCredentialsProvider) {
+	// 优先级：
+	// 1. 使用显示指定的 profileName
+	// 2. 使用环境变量（ALIBABA_CLOUD_PROFILE）指定的 profileName
+	// 3. 兜底使用 default 作为 profileName
+	b.provider.profileName = utils.GetDefaultString(b.provider.profileName, os.Getenv("ALIBABA_CLOUD_PROFILE"), "default")
+
+	provider = b.provider
+	return
+}
+
+func (provider *ProfileCredentialsProvider) getCredentialsProvider(ini *ini.File) (credentialsProvider CredentialsProvider, err error) {
+	section, err := ini.GetSection(provider.profileName)
+	if err != nil {
+		err = errors.New("ERROR: Can not load section" + err.Error())
+		return
+	}
+
+	value, err := section.GetKey("type")
+	if err != nil {
+		err = errors.New("ERROR: Can not find credential type" + err.Error())
+		return
+	}
+
+	switch value.String() {
+	case "access_key":
+		value1, err1 := section.GetKey("access_key_id")
+		value2, err2 := section.GetKey("access_key_secret")
+		if err1 != nil || err2 != nil {
+			err = errors.New("ERROR: Failed to get value")
+			return
+		}
+
+		if value1.String() == "" || value2.String() == "" {
+			err = errors.New("ERROR: Value can't be empty")
+			return
+		}
+
+		credentialsProvider, err = NewStaticAKCredentialsProviderBuilder().
+			WithAccessKeyId(value1.String()).
+			WithAccessKeySecret(value2.String()).
+			Build()
+	case "ecs_ram_role":
+		value1, err1 := section.GetKey("role_name")
+		if err1 != nil {
+			err = errors.New("ERROR: Failed to get value")
+			return
+		}
+		credentialsProvider, err = NewECSRAMRoleCredentialsProviderBuilder().WithRoleName(value1.String()).Build()
+	case "ram_role_arn":
+		value1, err1 := section.GetKey("access_key_id")
+		value2, err2 := section.GetKey("access_key_secret")
+		value3, err3 := section.GetKey("role_arn")
+		value4, err4 := section.GetKey("role_session_name")
+		if err1 != nil || err2 != nil || err3 != nil || err4 != nil {
+			err = errors.New("ERROR: Failed to get value")
+			return
+		}
+		if value1.String() == "" || value2.String() == "" || value3.String() == "" || value4.String() == "" {
+			err = errors.New("ERROR: Value can't be empty")
+			return
+		}
+		previous, err5 := NewStaticAKCredentialsProviderBuilder().
+			WithAccessKeyId(value1.String()).
+			WithAccessKeySecret(value2.String()).
+			Build()
+		if err5 != nil {
+			err = errors.New("get previous credentials provider failed")
+			return
+		}
+
+		credentialsProvider, err = NewRAMRoleARNCredentialsProviderBuilder().
+			WithCredentialsProvider(previous).
+			WithRoleArn(value3.String()).
+			WithRoleSessionName(value4.String()).
+			WithDurationSeconds(3600).
+			Build()
+	default:
+		err = errors.New("ERROR: Failed to get credential")
+	}
+	return
+}
+
+func (provider *ProfileCredentialsProvider) GetCredentials() (cc *Credentials, err error) {
+	if provider.innerProvider != nil {
+		return provider.innerProvider.GetCredentials()
+	}
+
+	sharedCfgPath := os.Getenv("ALIBABA_CLOUD_CREDENTIALS_FILE")
+	if sharedCfgPath == "" {
+		homeDir := getHomePath()
+		if homeDir == "" {
+			err = fmt.Errorf("cannot found home dir")
+			return
+		}
+
+		sharedCfgPath = path.Join(homeDir, ".alibabacloud/credentials")
+	}
+
+	ini, err := ini.Load(sharedCfgPath)
+	if err != nil {
+		err = errors.New("ERROR: Can not open file" + err.Error())
+		return
+	}
+
+	provider.innerProvider, err = provider.getCredentialsProvider(ini)
+	if err != nil {
+		return
+	}
+
+	return provider.innerProvider.GetCredentials()
+}