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* g10/gpg.c (aAddRecipients, aChangeRecipients): New consts. (opts): Add --add-recipients and --change-recipients. (main): Handle them. * g10/gpg.h (struct server_control_s): Add fields modify_recipients, clear_recipients, and last_read_ctb. * g10/armor.c (was_armored): New. * g10/decrypt.c (decrypt_message): Add optional arg 'remusr'. Handle re-encryption if desired. * g10/encrypt.c (write_pubkey_enc): Factor info printing out to ... (show_encrypted_for_user_info): new. (reencrypt_to_new_recipients): New. * g10/packet.h (struct parse_packet_ctx_s): Add fields only_fookey_enc and last_ctb. (init_parse_packet): Clear them. * g10/parse-packet.c (parse): Store CTB in the context. Early return on pubkey_enc and symkey_enc packets if requested. * g10/mainproc.c (proc_encrypted): Allow for PKT being NULL. Return early in modify-recipients mode. (proc_encryption_packets): Add two optional args 'r_dek' and 'r_list'. Adjust callers. Call do_proc_packets in modify-recipients mode depending on the optional args. (do_proc_packets): Add arg 'keep_dek_and_list'. Adjust callers. Save the last read CTB in CTRL and return after the last fooenc_enc packets. -- This basically works but does not yet handle symmetric encrypted packets (symkey_enc). GnuPG-bug-id: 1825 (Yes, this is an at least 9 year old feature request)
139 lines
4.3 KiB
C
139 lines
4.3 KiB
C
/* gpg.h - top level include file for gpg etc.
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* Copyright (C) 2003, 2006, 2010 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef GNUPG_G10_GPG_H
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#define GNUPG_G10_GPG_H
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/* Note, that this file should be the first one after the system
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header files. This is required to set the error source to the
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correct value and may be of advantage if we ever have to do
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special things. */
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#ifdef HAVE_W32_SYSTEM
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# define WIN32_LEAN_AND_MEAN 1
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#endif
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#ifdef GPG_ERR_SOURCE_DEFAULT
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#error GPG_ERR_SOURCE_DEFAULT already defined
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#endif
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#define GPG_ERR_SOURCE_DEFAULT GPG_ERR_SOURCE_GPG
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#define map_assuan_err(a) \
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map_assuan_err_with_source (GPG_ERR_SOURCE_DEFAULT, (a))
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#include <gpg-error.h>
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#include <gcrypt.h>
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/* Number of bits we accept when reading or writing MPIs. */
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#define MAX_EXTERN_MPI_BITS 16384
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/* Number of bytes we accept when reading four-octet count prefixed
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* key parameters. Needs to fit as a positive number into an int. */
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#define MAX_EXTERN_KEYPARM_BITS (32768*8)
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/* The maximum length of a binary fingerprints. This is used to
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* provide a static buffer and will be increased if we need to support
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* longer fingerprints. Warning: At some places we have some
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* assumption on a 20 byte fingerprint.
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* Watch out for FIXME(fingerprint) */
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#define MAX_FINGERPRINT_LEN 32
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/* The maximum length of a formatted fingerprint as returned by
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* format_hexfingerprint(). */
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#define MAX_FORMATTED_FINGERPRINT_LEN 60
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/*
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Forward declarations.
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*/
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/* Object used to keep state locally to server.c . */
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struct server_local_s;
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/* Object used to keep state locally to call-keyboxd.c . */
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struct keyboxd_local_s;
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typedef struct keyboxd_local_s *keyboxd_local_t;
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/* Object used to keep state locally to call-dirmngr.c . */
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struct dirmngr_local_s;
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typedef struct dirmngr_local_s *dirmngr_local_t;
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/* Object used to describe a keyblock node. */
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typedef struct kbnode_struct *KBNODE; /* Deprecated use kbnode_t. */typedef struct kbnode_struct *kbnode_t;
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/* The handle for keydb operations. */
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typedef struct keydb_handle_s *KEYDB_HANDLE;
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/* TOFU database meta object. */
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struct tofu_dbs_s;
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typedef struct tofu_dbs_s *tofu_dbs_t;
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#if SIZEOF_UNSIGNED_LONG == 8
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# define SERVER_CONTROL_MAGIC 0x53616c696e676572
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#else
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# define SERVER_CONTROL_MAGIC 0x53616c69
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#endif
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/* Session control object. This object is passed to most functions to
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convey the status of a session. Note that the defaults are set by
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gpg_init_default_ctrl(). */
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struct server_control_s
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{
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/* Always has the value SERVER_CONTROL_MAGIC. */
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unsigned long magic;
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/* Local data for server.c */
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struct server_local_s *server_local;
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/* Local data for call-dirmngr.c */
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dirmngr_local_t dirmngr_local;
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/* Local data for call-keyboxd.c */
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keyboxd_local_t keyboxd_local;
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/* Local data for tofu.c */
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struct {
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tofu_dbs_t dbs;
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int batch_updated_wanted;
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} tofu;
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/* This is used to cache a key data base handle. */
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KEYDB_HANDLE cached_getkey_kdb;
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/* Cached results from HAVEKEY --list. They are used if the pointer
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* is not NULL. The length gives the length in bytes and is a
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* multiple of 20. If the no_more flag is set the list shall not
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* anymore be refreshed even if it has been freed and NULLed. */
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unsigned char *secret_keygrips;
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size_t secret_keygrips_len;
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int no_more_secret_keygrips;
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/* This first flag is set to true if we are running a
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* --add-recipients or --change-recipients command. The second if
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* it is --change-recipients. */
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unsigned int modify_recipients:1;
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unsigned int clear_recipients:1;
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/* Temporary used to pass the last read byte up the call chain. */
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int last_read_ctb;
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};
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#endif /*GNUPG_G10_GPG_H*/
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