gpgme/src/decrypt-verify.c, branch gpgme-2.1.2

New decrypt flags GPGME_DECRYPT_LISTONLY.

2025-03-18T15:22:58Z

* src/gpgme.h.in (GPGME_DECRYPT_LISTONLY): New. * src/decrypt.c (op_data_t): Add member list_only. (_gpgme_decrypt_status_handler): Do not return NO_DATA in list_only mode. (_gpgme_op_decrypt_init_result): Add arg flags and set the list_only flag. (_gpgme_decrypt_start): Pss flags to the init function. * src/decrypt-verify.c (decrypt_verify_start): Ditto. * src/engine-gpg.c (gpg_decrypt): Add --list-only if flag is set. * tests/run-decrypt.c (main): Add option --list-only.

core: Allow finalization of signature verification of unencrypted data

2023-02-10T08:54:03Z

* src/decrypt-verify.c (decrypt_verify_status_handler): Call _gpgme_verify_status_handler on EOF even if _gpgme_decrypt_status_handler returned NO DATA error. * tests/gpg/t-decrypt-verify.c (normal_signed_message): New. (main): Add test with signed, but not encrypted data. -- This allows the verify status handler to finalize the verification of the last signature even if the decrypt status handler returned a NO DATA error because the input data wasn't encrypted. GnuPG-bug-id: 6368

core: Simplify the trace maros by using variadics.

2018-11-16T15:25:49Z

* src/debug.h (TRACE_BEG, TRACE_LOG, TRACE_SUC): Use variadic macros and remove the TRACE_BEG1 et al. Change all users to always pass a format string. (TRACE): Ditto. * src/debug.c (_gpgme_debugf): New. * configure.ac : Add -Wno-format-zero-length. -- This makes it easier for use to enable format checks. The zero-length format is required to allow for an empty format due to the comman problematic of __VA_ARGS__. Signed-off-by: Werner Koch

Add SPDX identifiers to most source files

2018-11-16T12:27:33Z

-- Signed-off-by: Werner Koch

core: Blank out the plaintext after decryption failure.

2018-07-19T15:39:09Z

* src/data.h (data_prop_t): New enum. (struct gpgme_data): Add field propidx. * src/data.c (property_t): New. (property_table, property_table_size, property_table_lock): New. (insert_into_property_table): New. (remove_from_property_table): New. (_gpgme_data_get_dserial): New. (_gpgme_data_set_prop): New. (_gpgme_data_get_prop): New. (_gpgme_data_new): Connect new object to property_table. (_gpgme_data_release): Remove from property_table. (gpgme_data_read): With DATA_PROP_BLANKOUT set don't fill the buffer. * src/data-mem.c (gpgme_data_release_and_get_mem): Likewise. * src/decrypt.c (struct op_data): Add field plaintext_dserial. (_gpgme_op_decrypt_init_result): Add arg plaintext and init new field. (_gpgme_decrypt_status_handler): Set DATA_PROP_BLANKOUT on decryption failure. (_gpgme_decrypt_start): Pass PLAIN to the init function. * src/decrypt-verify.c (decrypt_verify_start): Ditto. * configure.ac: Check for stdint.h and bail out if uint64_t is not available. -- This is a best effort feature to not output plaintext after a decryption failure (e.g. due to no or broken authenticated encryption). It always work when using a memory object and reading it after the decryption but it can't work reliable when the user is reading from the data object while the decryption process is still running. This is quite a large change because the data objects and the context objects are allowed to be owned by different threads. Thus a synchronization is needed and we do this with a global table of all data objects to which the context objects can do soft-linking via a unique data object serial number. Signed-off-by: Werner Koch

core: New context flag "ignore-mdc-error".

2018-05-31T23:29:34Z

* src/context.h (gpgme_context): Add field ignore_mdc_error. * src/gpgme.c (gpgme_set_ctx_flag, gpgme_get_ctx_flag): Set/get it. * src/engine-gpg.c (engine_gpg): Add flags.ignore_mdc_error. (gpg_set_engine_flags): Set it. (build_argv): Pass option to gpg. * src/decrypt.c (_gpgme_decrypt_status_handler): Take care of flag. (gpgme_op_decrypt_result): Clear flag. (gpgme_op_decrypt): Clear flag. * src/decrypt-verify.c (gpgme_op_decrypt_verify): Clear flag (gpgme_op_decrypt_ext): Clear flag. * tests/run-decrypt.c (show_usage): Add option --ignore-mdc-error. Signed-off-by: Werner Koch

core: Remove cruft from the engine-gpg code.

2018-05-31T22:13:53Z

* src/engine-gpg.c (read_status): Remove the handling of GPGME_STATUS_END_STREAM; this was used only by the former experimental --pipemode of gpg but that is not even anymore invoked here. (struct engine_gpg): Remove cmd.linked_data and .linked_idx. (build_argv): Remove code for linked_data. (gpg_new): Ditto. (gpg_set_command_handler): Remove arr linked_data. * src/engine-backend.h (engine_ops): Remove arg data from set_command_handler. * src/engine.c (_gpgme_engine_set_command_handler): Remove arg linked_data and adjust all callers. Signed-off-by: Werner Koch

core: New context flag "auto-key-retrieve"

2017-08-24T15:17:11Z

* src/gpgme.c (gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag "auto-key-retrieve". * src/context.h (gpgme_context): New field auto_key_retrieve. * src/engine-backend.h (struct engine_ops): Add arg auto_key_retrieve to field 'decrypt'. * src/engine-gpg.c (gpg_decrypt): Add arg auto_key_retrieve and pass option --auto-key-retrieve to gpg. Adjust all callers. (gpg_verify): Ditto. * src/engine-gpgsm.c (gpgsm_decrypt): Add dummy arg auto_key_retrieve. * src/engine-uiserver.c (uiserver_decrypt): Ditto. * tests/run-verify.c (main): Add option --auto-key-retrieve. -- This makes the --auto-key-retrieve option available in the GPGME API. Test plan: Run GPGME_DEBUG=9:out tests/run-verify SIGNEDFILE with and without its new option --auto-key-retrieve and check in the trace stored in "out" whether --auto-key-retrieve was passed to gpg. Signed-off-by: Werner Koch

core: New flags GPGME_DECRYPT_UNWRAP and GPGME_ENCRYPT_WRAP.

2017-03-24T14:17:23Z

* src/gpgme.h.in (GPGME_ENCRYPT_WRAP): New const. (gpgme_decrypt_flags_t): New enum. (GPGME_DECRYPT_VERIFY): New const (GPGME_DECRYPT_UNWRAP): New const (gpgme_op_decrypt_ext_start): New func. (gpgme_op_decrypt_ext): New func. * src/decrypt-verify.c (gpgme_op_decrypt_ext_start): New. (gpgme_op_decrypt_ext): New. (decrypt_verify_start): Add arg FLAGS. Replace call to engine_op_decrypt_verify by the plain decrypt with the flag set. (gpgme_op_decrypt_verify_start): Pass the flag. (gpgme_op_decrypt_verify): Pass the flag. * src/decrypt.c (decrypt_start): Rename to ... (_gpgme_decrypt_start): this. Add arg FLAGS. Pass FLAGS to engine_op_decrypt. (gpgme_op_decrypt_start): Adjust for chnage pass 0 for FLAG. (gpgme_op_decrypt_start): Ditto. * src/engine.c (_gpgme_engine_op_decrypt_verify): Remove. (_gpgme_engine_op_decrypt): Add arg FLAGS. * src/gpgme.def, src/libgpgme.vers: Add new functions. * src/engine-backend.h (struct engine_ops): Remove member 'decrypt_verify'. Add FLAGS to 'decrypt'. Adjust all initialization. * src/engine-uiserver.c (uiserver_decrypt): Remove. (uiserver_decrypt_verify): Remove. (_uiserver_decrypt): Rename to ... (uiserver_decrypt): this. Replace arg VERIFY by new arg FLAGS. * src/engine-gpg.c (gpg_decrypt): Support GPGME_DECRYPT_UNWRAP. (gpg_encrypt): Support GPGME_ENCRYPT_WRAP. * tests/run-decrypt.c (main): New option --unwrap. * tests/run-encrypt.c (main): New option --wrap. -- Manual testing of that wrap/unwrap feature can be done this way: ./run-encrypt --verbose --key Alice /etc/motd > x ./run-decrypt --verbose --unwrap x > y ./run-encrypt --verbose --key Bob --wrap y > z 1. The message was first encrypted to Alice. 2. Alice decrypts the message receiving a valid OpenPGP message. 3. Alice encrypt that message to Bob This will also work with encrypted and signed messages; the signature will be kept intact during re-encryption. Requires GnuPG 2.1.12. Signed-off-by: Werner Koch

core: Implement context flag "override-session-key".

2016-11-15T09:34:13Z

* src/gpgme.c (gpgme_set_ctx_flag): Add flags "export-session-key" and "override-session-key". (gpgme_get_ctx_flag): Ditto. (gpgme_set_export_session_keys): Remove. (gpgme_get_export_session_keys): Remove. * src/gpgme.def, src/libgpgme.vers: Remove them. * src/context.h (struct gpgme_context): Add field override_session_key. * src/decrypt-verify.c (decrypt_verify_start): Pass override_session_key value to the engine. * src/decrypt.c (decrypt_start): Ditto. * src/engine.c (_gpgme_engine_op_decrypt): Ditto. (_gpgme_engine_op_decrypt_verify): Ditto. * src/engine-backend.h (struct engine_ops): Extend DECRYPT and DECRYPT_VERIFY_START with override_session_key. * src/engine-uiserver.c (_uiserver_decrypt): Add stub arg override_session_key. (uiserver_decrypt): Ditto. (uiserver_decrypt_verify): Ditto. * src/engine-gpgsm.c (gpgsm_decrypt): Ditto. * src/engine-gpg.c (gpg_decrypt): Add arg override_session_key and set corresponding gpg option. * tests/run-decrypt.c (print_result): Print the session key if available. (main): Add options --export-session-key and --override-session-key. -- To keep the number of context manipulation functions at bay, this patches removes the just added gpgme_set_export_session_keys and gpgme_get_export_session_keys by flags for the generic context function. The patch also implements the --override-session-key feature. GnuPG-bug-id: 2754 Signed-off-by: Werner Koch