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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| package aztablestore | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "os" | ||
|
|
||
| "github.com/Azure/azure-sdk-for-go/sdk/azidentity" | ||
| "github.com/Azure/azure-sdk-for-go/sdk/data/aztables" | ||
| ) | ||
|
|
||
| // Use default function credentials and use it for the table client | ||
| // the expectation is that the function identity has access to the table | ||
| func getTableClient(tableName string) (*aztables.Client, error) { | ||
| accountName, ok := os.LookupEnv("AZURE_STORAGE_ACCOUNT") | ||
| if !ok { | ||
| return nil, errors.New("AZURE_STORAGE_ACCOUNT environment variable not found") | ||
| } | ||
| cred, err := azidentity.NewDefaultAzureCredential(nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| serviceURL := fmt.Sprintf("https://%s.table.core.windows.net/%s", accountName, tableName) | ||
| client, err := aztables.NewClient(serviceURL, cred, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return client, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| package aztablestore | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
|
|
||
| "github.com/Azure/azure-sdk-for-go/sdk/data/aztables" | ||
| "github.com/ivarprudnikov/secretshare/internal/storage" | ||
| ) | ||
|
|
||
| type azUserStore struct { | ||
| tableName string | ||
| salt string | ||
| } | ||
|
|
||
| func NewAzUserStore(tableName, salt string) storage.UserStore { | ||
| return &azUserStore{tableName: tableName, salt: salt} | ||
| } | ||
|
|
||
| func (u *azUserStore) getClient() (*aztables.Client, error) { | ||
| return getTableClient(u.tableName) | ||
| } | ||
|
|
||
| // aztables does not have a way to query the size of the table | ||
| // need to scan through all of the records :( | ||
| func (u *azUserStore) CountUsers() (int64, error) { | ||
| var count int64 = 0 | ||
| client, err := u.getClient() | ||
| if err != nil { | ||
| return count, err | ||
| } | ||
| keySelector := "$select=PartitionKey" | ||
| metadataFormat := aztables.MetadataFormatNone | ||
| listPager := client.NewListEntitiesPager(&aztables.ListEntitiesOptions{ | ||
| Select: &keySelector, | ||
| Format: &metadataFormat, | ||
| }) | ||
| for listPager.More() { | ||
| response, err := listPager.NextPage(context.TODO()) | ||
| if err != nil { | ||
| return count, err | ||
| } | ||
| count += int64(len(response.Entities)) | ||
| } | ||
| return count, nil | ||
| } | ||
|
|
||
| func (u *azUserStore) AddUser(username string, password string, permissions []string) (*storage.User, error) { | ||
| existing, err := u.GetUser(username) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if existing != nil { | ||
| return nil, errors.New("username is not available") | ||
| } | ||
| usr, err := storage.NewUser(username, password, permissions) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| marshalled, err := json.Marshal(usr) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| client, err := u.getClient() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resp, err := client.AddEntity(context.TODO(), marshalled, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var saved *storage.User | ||
| err = json.Unmarshal(resp.Value, &saved) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return saved, nil | ||
| } | ||
|
|
||
| func (u *azUserStore) GetUser(username string) (*storage.User, error) { | ||
| client, err := u.getClient() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resp, err := client.GetEntity(context.TODO(), username, username, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if resp.Value == nil { | ||
| return nil, nil | ||
| } | ||
| var user *storage.User | ||
| err = json.Unmarshal(resp.Value, &user) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return user, nil | ||
| } | ||
|
|
||
| func (u *azUserStore) GetUserWithPass(username string, password string) (*storage.User, error) { | ||
| user, err := u.GetUser(username) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| hashedPass := "unknown" | ||
| if user != nil { | ||
| hashedPass = user.Password | ||
| } | ||
| // even if user is not found evaluate the password | ||
| // this will reduce the effect on time difference | ||
| // at the time of the login check | ||
| if err := storage.CompareHashToPass(hashedPass, password); err == nil { | ||
| return user, nil | ||
| } | ||
| return nil, nil | ||
| } |
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