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- /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- /* mimemsig.h --- definition of the MimeMultipartSigned class (see mimei.h)
- Created: Jamie Zawinski <jwz@netscape.com>, 23-Sep-96.
- */
-
- #ifndef _MIMEMSIG_H_
- #define _MIMEMSIG_H_
-
- #include "mimemult.h"
- #include "mimepbuf.h"
- #include "mimeenc.h"
-
- /* The MimeMultipartSigned class implements the multipart/signed MIME
- container, which provides a general method of associating a cryptographic
- signature to an arbitrary MIME object.
-
- The MimeMultipartSigned class provides the following methods:
-
- void *crypto_init (MimeObject *multipart_object)
-
- This is called with the object, the object->headers of which should be
- used to initialize the decryption engine. NULL indicates failure;
- otherwise, an opaque closure object should be returned.
-
- int crypto_data_hash (char *data, int32 data_size,
- void *crypto_closure)
-
- This is called with the raw data, for which a signature has been computed.
- The crypto module should examine this, and compute a signature for it.
-
- int crypto_data_eof (void *crypto_closure, XP_Bool abort_p)
-
- This is called when no more data remains. If `abort_p' is true, then the
- crypto module may choose to discard any data rather than processing it,
- as we're terminating abnormally.
-
- int crypto_signature_init (void *crypto_closure,
- MimeObject *multipart_object,
- MimeHeaders *signature_hdrs)
-
- This is called after crypto_data_eof() and just before the first call to
- crypto_signature_hash(). The crypto module may wish to do some
- initialization here, or may wish to examine the actual headers of the
- signature object itself.
-
- int crypto_signature_hash (char *data, int32 data_size,
- void *crypto_closure)
-
- This is called with the raw data of the detached signature block. It will
- be called after crypto_data_eof() has been called to signify the end of
- the data which is signed. This data is the data of the signature itself.
-
- int crypto_signature_eof (void *crypto_closure, XP_Bool abort_p)
-
- This is called when no more signature data remains. If `abort_p' is true,
- then the crypto module may choose to discard any data rather than
- processing it, as we're terminating abnormally.
-
- char * crypto_generate_html (void *crypto_closure)
-
- This is called after `crypto_signature_eof' but before `crypto_free'.
- The crypto module should return a newly-allocated string of HTML code
- which explains the status of the decryption to the user (whether the
- signature checks out, etc.)
-
- void crypto_free (void *crypto_closure)
-
- This will be called when we're all done, after `crypto_signature_eof' and
- `crypto_emit_html'. It is intended to free any data represented by the
- crypto_closure.
- */
-
- typedef struct MimeMultipartSignedClass MimeMultipartSignedClass;
- typedef struct MimeMultipartSigned MimeMultipartSigned;
-
- typedef enum {
- MimeMultipartSignedPreamble,
- MimeMultipartSignedBodyFirstHeader,
- MimeMultipartSignedBodyHeaders,
- MimeMultipartSignedBodyFirstLine,
- MimeMultipartSignedBodyLine,
- MimeMultipartSignedSignatureHeaders,
- MimeMultipartSignedSignatureFirstLine,
- MimeMultipartSignedSignatureLine,
- MimeMultipartSignedEpilogue
- } MimeMultipartSignedParseState;
-
- struct MimeMultipartSignedClass {
- MimeMultipartClass multipart;
-
- /* Callbacks used by decryption (really, signature verification) module. */
- void * (*crypto_init) (MimeObject *multipart_object);
-
- int (*crypto_data_hash) (char *data, int32 data_size,
- void *crypto_closure);
- int (*crypto_signature_hash) (char *data, int32 data_size,
- void *crypto_closure);
-
- int (*crypto_data_eof) (void *crypto_closure, XP_Bool abort_p);
- int (*crypto_signature_eof) (void *crypto_closure, XP_Bool abort_p);
-
- int (*crypto_signature_init) (void *crypto_closure,
- MimeObject *multipart_object,
- MimeHeaders *signature_hdrs);
-
- char * (*crypto_generate_html) (void *crypto_closure);
-
- void (*crypto_free) (void *crypto_closure);
- };
-
- extern MimeMultipartSignedClass mimeMultipartSignedClass;
-
- struct MimeMultipartSigned {
- MimeMultipart multipart;
- MimeMultipartSignedParseState state; /* State of parser */
-
- void *crypto_closure; /* Opaque data used by signature
- verification module. */
-
- MimeHeaders *body_hdrs; /* The headers of the signed object. */
- MimeHeaders *sig_hdrs; /* The headers of the signature. */
-
- MimePartBufferData *part_buffer; /* The buffered body of the signed
- object (see mimepbuf.h) */
-
- MimeDecoderData *sig_decoder_data; /* The signature is probably base64
- encoded; this is the decoder used
- to get raw bits out of it. */
- };
-
- #endif /* _MIMEMSIG_H_ */
-