Andreas Krennmair:

[apps/madmutt.git] / crypt-mod.h

diff --git a/crypt-mod.h b/crypt-mod.h
new file mode 100644 (file)
index 0000000..4f69c3e
--- /dev/null
+++ b/crypt-mod.h
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2004 g10 Code GmbH
+ *
+ *     This program is free software; you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation; either version 2 of the License, or
+ *     (at your option) any later version.
+ * 
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ * 
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program; if not, write to the Free Software
+ *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
+ */
+
+#ifndef CRYPTOGRAPHY_H
+#define CRYPTOGRAPHY_H
+
+#include "mutt.h"
+#include "mutt_crypt.h"
+
+#define CRYPTO_SUPPORT(identifier) (WithCrypto & APPLICATION_ ## identifier)
+
+
+/* 
+    Type defintions for crypto module functions.
+ */
+typedef void (*crypt_func_void_passphrase_t) (void);
+typedef int (*crypt_func_valid_passphrase_t)  (void);
+
+typedef int (*crypt_func_decrypt_mime_t) (FILE *a, FILE **b,
+                                          BODY *c, BODY **d);
+
+typedef void (*crypt_func_application_handler_t) (BODY *m, STATE *s);
+typedef void (*crypt_func_encrypted_handler_t) (BODY *m, STATE *s);
+
+typedef void (*crypt_func_pgp_invoke_getkeys_t) (ADDRESS *addr);
+typedef int (*crypt_func_pgp_check_traditional_t) (FILE *fp, BODY *b,
+                                                   int tagged_only);
+typedef BODY *(*crypt_func_pgp_traditional_encryptsign_t) (BODY *a, int flags,
+                                                           char *keylist);
+typedef BODY *(*crypt_func_pgp_make_key_attachment_t) (char *tempf);
+typedef char *(*crypt_func_findkeys_t) (ADDRESS *to,
+                                        ADDRESS *cc, ADDRESS *bcc);
+typedef BODY *(*crypt_func_sign_message_t) (BODY *a);
+typedef BODY *(*crypt_func_pgp_encrypt_message_t) (BODY *a, char *keylist,
+                                                   int sign);
+typedef void (*crypt_func_pgp_invoke_import_t) (const char *fname);
+typedef int (*crypt_func_verify_one_t) (BODY *sigbdy, STATE *s,
+                                        const char *tempf);
+typedef void (*crypt_func_pgp_extract_keys_from_attachment_list_t) 
+                                           (FILE *fp, int tag, BODY *top);
+
+typedef int (*crypt_func_send_menu_t) (HEADER *msg, int *redraw);
+
+ /* (SMIME) */
+typedef void (*crypt_func_smime_getkeys_t) (ENVELOPE *env);
+typedef int (*crypt_func_smime_verify_sender_t) (HEADER *h);
+
+typedef BODY *(*crypt_func_smime_build_smime_entity_t) (BODY *a,
+                                                        char *certlist);
+
+typedef void (*crypt_func_smime_invoke_import_t) (char *infile, char *mailbox);
+
+typedef void (*crypt_func_init_t) (void);
+
+
+/*
+   A structure to keep all crypto module fucntions together.
+ */
+typedef struct crypt_module_functions
+{
+  /* Common/General functions.  */
+  crypt_func_init_t init;
+  crypt_func_void_passphrase_t void_passphrase;
+  crypt_func_valid_passphrase_t valid_passphrase;
+  crypt_func_decrypt_mime_t decrypt_mime;
+  crypt_func_application_handler_t application_handler;
+  crypt_func_encrypted_handler_t encrypted_handler;
+  crypt_func_findkeys_t findkeys;
+  crypt_func_sign_message_t sign_message;
+  crypt_func_verify_one_t verify_one;
+  crypt_func_send_menu_t send_menu;
+
+  /* PGP specific functions.  */
+  crypt_func_pgp_encrypt_message_t pgp_encrypt_message;
+  crypt_func_pgp_make_key_attachment_t pgp_make_key_attachment;
+  crypt_func_pgp_check_traditional_t pgp_check_traditional;
+  crypt_func_pgp_traditional_encryptsign_t pgp_traditional_encryptsign;
+  crypt_func_pgp_invoke_getkeys_t pgp_invoke_getkeys;
+  crypt_func_pgp_invoke_import_t pgp_invoke_import;
+  crypt_func_pgp_extract_keys_from_attachment_list_t
+                                 pgp_extract_keys_from_attachment_list;
+
+  /* S/MIME specific functions.  */
+
+  crypt_func_smime_getkeys_t smime_getkeys;
+  crypt_func_smime_verify_sender_t smime_verify_sender;
+  crypt_func_smime_build_smime_entity_t smime_build_smime_entity;
+  crypt_func_smime_invoke_import_t smime_invoke_import;
+} crypt_module_functions_t;
+
+
+/*
+   A structure to decribe a crypto module. 
+ */
+typedef struct crypt_module_specs
+{
+  int identifier;                      /* Identifying bit.  */
+  crypt_module_functions_t functions;
+} *crypt_module_specs_t;
+
+
+
+/* 
+   High Level crypto module interface. 
+ */
+
+void crypto_module_register (crypt_module_specs_t specs);
+crypt_module_specs_t crypto_module_lookup (int identifier);
+
+/* If the crypto module identifier by IDENTIFIER has been registered,
+   call its function FUNC.  Do nothing else.  This may be used as an
+   expression. */
+#define CRYPT_MOD_CALL_CHECK(identifier, func) \
+  (crypto_module_lookup (APPLICATION_ ## identifier) \
+   && (crypto_module_lookup (APPLICATION_ ## identifier))->functions.func)
+
+/* Call the function FUNC in the crypto module identified by
+   IDENTIFIER. This may be used as an expression. */
+#define CRYPT_MOD_CALL(identifier, func) \
+  *(crypto_module_lookup (APPLICATION_ ## identifier))->functions.func
+
+#endif