Changed the URLs for RFC 4954 and RFC 4616 from plain text to HTML formats for improved readability and consistency. This adjustment does not affect the functionality but enhances the documentation quality.
Streamlined comments and documentation in `b64linebreaker.go` for better readability and consistency. Improved descriptions of the Base64LineBreaker and its methods to ensure clarity on functionality.
Updated the comment for SMTPAuthType to more clearly explain its purpose as a type wrapper for SMTP authentication mechanisms. This improves code readability and helps future developers understand the type's function.
Extended documentation for each SMTP AUTH type including security considerations, relevant specifications, and the context for usage. Updated error descriptions for consistency and clarity. This enhances readability and provides better guidance for developers.
Extended SMTP tests to include SCRAM-SHA-1-PLUS and SCRAM-SHA-256-PLUS authentication mechanisms. Adjusted the `startSMTPServer` function to accept a hashing function and modified the server logic to handle TLS channel binding.
This commit refines the paths in GitHub Actions workflows to more precisely track changes in Go-related files and specific workflow files. General `.github/**` paths have been replaced with explicit references to relevant workflow files within `.github/workflows`.
Eliminated unnecessary environment variables and pkg update step to streamline the CI process. Simplified the test script by removing verbose flag from the go test command.
This commit updates the Codecov GitHub Actions workflow to run only on Go version 1.23, removing support for 1.19 and 1.20. Simplifying to a single Go version aims to streamline the testing process and reduce potential compatibility issues.
Introduce a new offline tests workflow to validate Go code across multiple OS and Go versions. This commit also removes unused environment variables and updates the Go version syntax in the SonarQube workflow.
Add checks to handle errors when reading client messages. This ensures that an appropriate error message is sent back to the client if reading fails, improving the robustness of the SMTP authentication process.
Introduce new unit tests to verify SCRAM-SHA-1 and SCRAM-SHA-256 authentication for the SMTP client. These tests cover both successful and failing authentication cases, and include a mock SMTP server to facilitate testing.
Introduced new test cases for SCRAM-SHA-1, SCRAM-SHA-256, and their PLUS variants in `smtp_test.go`. Updated the authTest structure to include a `hasNonce` flag and implemented logic to handle nonce validation and success message processing.
Refactor error return to include more specific information and add a check for TLS connection state in SCRAM-SHA-X-PLUS authentication flow. This ensures clearer error messages and verifies essential prerequisites for secure authentication.
Centralized error definitions in `smtp/auth.go` and updated references in `auth_login.go` and `auth_plain.go`. This improves code maintainability and error consistency across the package.
Corrected the reference for `TEST_PASS_SCRAM` in both workflows. Simplified the Go test command in `codecov.yml` and added the `shuffle=on` option for better test randomness in `sonarqube.yml`.
Updated the README file to include our new support and general discussion channel on the Gophers Slack. Users can now find us on both Discord and Slack for any queries or discussions related to go-mail.
This commit introduces SCRAM authentication configurations to both `codecov.yml` and `sonarqube.yml` GitHub Action workflow files. The changes include new environment variables for SCRAM host, user, and password to enhance the security and flexibility of the CI processes.
Changed variable assignment in the test to fix error handling. This ensures the error is properly caught and reported during the client connection process.
The addition of `a.respStep = 0` resets the response step counter at the beginning of the AUTH LOGIN process. This ensures that the state starts correctly and avoids potential issues related to residual values from previous authentications.
Enhanced the LoginAuth test coverage by adding new scenarios with different sequences and invalid cases. This ensures more robust validation and better handling of edge cases in authentication testing.
Refactored SMTP LOGIN auth to improve compatibility with various server responses, consolidating error handling and response steps. Added extensive tests to verify successful and failed authentication across different server configurations.
Introduce a new test case `TestClient_AuthSCRAMSHAX_unsupported` to validate handling of unsupported SCRAM-SHA authentication methods. This ensures the client returns the correct errors when setting unsupported auth types.
This change ensures that the smtpAuth field is reset to nil whenever the SMTP auth type is updated. This prevents potential issues with mismatched authentication settings.
The variable ErrNonTLSConnection has been simplified from a multi-line declaration to a single-line declaration. This increases code readability and maintains consistency with Go conventions.
Introduce a global error variable for non-TLS connections and update corresponding error handling across the codebase. This enhances readability and maintainability of the error management logic.
Implemented tests for various SCRAM-SHA authentication methods including SCRAM-SHA-1, SCRAM-SHA-1-PLUS, SCRAM-SHA-256, and SCRAM-SHA-256-PLUS with invalid credentials. This ensures that the client correctly handles and reports authentication failures.
Corrects the error messages returned for unsupported SMTP authentication types from ErrXOauth2AuthNotSupported to specific errors like ErrSCRAMSHA1AuthNotSupported, ErrSCRAMSHA256AuthNotSupported, and so on. This change improves the accuracy of error reporting for various SMTP authentication mechanisms.
Enhanced the documentation by adding detailed comments for each SMTP authentication type, specifying their references to RFC documents. Corrected comments for error variables to match the corresponding authentication schemas.
Introduce `TestClient_AuthSCRAMSHAX` to verify SCRAM-SHA-1 and SCRAM-SHA-256 authentication. These tests validate the creation, connection, and closing of clients with the respective authentication methods using environment-configured credentials.
Updated `TestClient_AuthSCRAMSHA1PLUS_tlsexporter` and `TestClient_AuthSCRAMSHA1PLUS_tlsunique` to test both SCRAM-SHA-1-PLUS and SCRAM-SHA-256-PLUS authentication types. Implemented table-driven tests to improve readability and maintainability.
Enhanced code readability and maintainability by adding comprehensive documentation comments to all methods and struct definitions in the `smtp/auth_scram.go` file. This improves clarity on the functionality and usage of the SCRAM (Salted Challenge Response Authentication Mechanism) methods and structures.
Revise the sponsors section in README.md to convey gratitude more concisely. Removed redundant phrasing and made the message more direct while ensuring the intent remains clear.
Updated the Authors/Contributors section to include a graphical representation of contributors and added special thanks to Maria Letta for the logo design. Introduced a new Sponsors section to acknowledge the support from sponsors.
