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userToTenantEnhancer.service.go
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/
userToTenantEnhancer.service.go
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package security
import (
"context"
"fmt"
"github.com/gin-gonic/gin"
"github.com/openline-ai/openline-customer-os/packages/server/customer-os-common-module/caches"
neo4jrepository "github.com/openline-ai/openline-customer-os/packages/server/customer-os-neo4j-repository/repository"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
"net/http"
)
type HeaderAllowance string
const (
USERNAME HeaderAllowance = "USERNAME"
TENANT HeaderAllowance = "TENANT"
USERNAME_OR_TENANT HeaderAllowance = "USERNAME_OR_TENANT"
)
const (
KEY_TENANT_NAME = "TenantName"
KEY_USER_ID = "UserId"
KEY_USER_EMAIL = "UserEmail"
KEY_USER_ROLES = "UserRoles"
KEY_IDENTITY_ID = "IdentityId"
)
const UsernameHeader = "X-Openline-USERNAME"
const TenantHeader = "X-Openline-TENANT"
const IdentityIdHeader = "X-Openline-IDENTITY-ID"
func TenantUserContextEnhancer(headerAllowance HeaderAllowance, cr *neo4jrepository.Repositories, opts ...CommonServiceOption) func(c *gin.Context) {
// Apply the options to configure the middleware
config := &Options{}
for _, opt := range opts {
opt(config)
}
return func(c *gin.Context) {
span, ctx := opentracing.StartSpanFromContext(c.Request.Context(), "TenantUserContextEnhancer")
spanFinished := false
defer func() {
if !spanFinished {
span.Finish()
}
}()
//if API call is made with a tenant api key, the apiKeyChecker validated it already
tenantKh := c.GetHeader(TenantApiKeyHeader)
if tenantKh != "" {
return
}
tenantHeader := c.GetHeader(TenantHeader)
usernameHeader := c.GetHeader(UsernameHeader)
span.LogFields(
log.String("header.tenant", tenantHeader),
log.String("header.username", usernameHeader),
log.String("headerAllowance", string(headerAllowance)))
var (
tenantExists bool
userId string
tenantName string
roles []string
err error
)
c.Set(KEY_IDENTITY_ID, c.GetHeader(IdentityIdHeader))
switch headerAllowance {
case TENANT:
tenantExists, err = checkTenantHeader(c, tenantHeader, cr, ctx, config.cache)
if err != nil {
return
}
c.Set(KEY_TENANT_NAME, tenantHeader)
case USERNAME:
userId, tenantName, roles, err = checkUsernameHeader(c, usernameHeader, cr, ctx, config.cache)
if err != nil {
return
}
c.Set(KEY_TENANT_NAME, tenantName)
c.Set(KEY_USER_ID, userId)
c.Set(KEY_USER_EMAIL, usernameHeader)
c.Set(KEY_USER_ROLES, roles)
case USERNAME_OR_TENANT:
if tenantHeader == "" && usernameHeader == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "User or Tenant must be specified"}},
})
c.Abort()
return
}
if tenantHeader != "" {
tenantExists, err = checkTenantHeader(c, tenantHeader, cr, ctx, config.cache)
if err != nil {
return
}
if tenantExists {
c.Set(KEY_TENANT_NAME, tenantHeader)
}
}
if usernameHeader != "" {
userId, tenantName, roles, err = checkUsernameHeader(c, usernameHeader, cr, ctx, config.cache)
if err != nil {
return
}
c.Set(KEY_TENANT_NAME, tenantName)
c.Set(KEY_USER_ID, userId)
c.Set(KEY_USER_EMAIL, usernameHeader)
c.Set(KEY_USER_ROLES, roles)
}
if !spanFinished {
span.Finish()
spanFinished = true
}
c.Next()
return
default:
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "unknown header Allowance"}},
})
c.Abort()
return
}
if !spanFinished {
span.Finish()
spanFinished = true
}
c.Next()
}
}
func checkTenantHeader(c *gin.Context, tenantHeader string, cr *neo4jrepository.Repositories, ctx context.Context, cache *caches.Cache) (bool, error) {
if tenantHeader == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "missing tenant header"}},
})
c.Abort()
return false, fmt.Errorf("missing tenant header")
}
if cache != nil && cache.CheckTenant(tenantHeader) {
return true, nil
}
exists, err := cr.TenantReadRepository.TenantExists(ctx, tenantHeader)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": fmt.Sprintf("failed to check tenant existence: %v", err)}},
})
c.Abort()
return false, fmt.Errorf("failed to check tenant existence: %v", err)
}
if !exists {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "tenant does not exist"}},
})
c.Abort()
return false, fmt.Errorf("tenant does not exist")
}
if cache != nil {
cache.AddTenant(tenantHeader)
}
return true, nil
}
func checkUsernameHeader(c *gin.Context, usernameHeader string, cr *neo4jrepository.Repositories, ctx context.Context, cache *caches.Cache) (string, string, []string, error) {
if usernameHeader == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "missing username header"}},
})
c.Abort()
return "", "", []string{}, fmt.Errorf("missing username header")
}
if cache != nil {
userId, tenantName, roles, found := cache.GetUserDetailsFromCache(usernameHeader)
if found {
return userId, tenantName, roles, nil
}
}
userId, tenantName, roles, err := cr.UserReadRepository.FindUserByEmail(ctx, usernameHeader)
if err != nil {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": fmt.Sprintf("failed to find user: %v", err)}},
})
c.Abort()
return "", "", []string{}, fmt.Errorf("failed to find user: %v", err)
}
if tenantName == "" {
c.JSON(http.StatusUnauthorized, gin.H{
"errors": []gin.H{{"message": "user has no associated tenant"}},
})
c.Abort()
return "", "", []string{}, fmt.Errorf("user has no associated tenant")
}
if cache != nil {
cache.AddUserDetailsToCache(usernameHeader, userId, tenantName, roles)
}
return userId, tenantName, roles, nil
}