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306 lines
8.4 KiB
C
306 lines
8.4 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* mimeobj.c --- definition of the MimeObject class (see mimei.h)
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Created: Jamie Zawinski <jwz@netscape.com>, 15-May-96.
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*/
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#include "rosetta.h"
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#include "mimeobj.h"
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#ifndef MOZILLA_30
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/* Way to destroy any notions of modularity or class hierarchy, Terry! */
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# include "mimetpla.h"
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# include "mimethtm.h"
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# include "mimecont.h"
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#endif /* !MOZILLA_30 */
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MimeDefClass (MimeObject, MimeObjectClass, mimeObjectClass, NULL);
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static int MimeObject_initialize (MimeObject *);
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static void MimeObject_finalize (MimeObject *);
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static int MimeObject_parse_begin (MimeObject *);
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static int MimeObject_parse_buffer (char *, int32, MimeObject *);
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static int MimeObject_parse_line (char *, int32, MimeObject *);
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static int MimeObject_parse_eof (MimeObject *, XP_Bool);
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static int MimeObject_parse_end (MimeObject *, XP_Bool);
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static XP_Bool MimeObject_displayable_inline_p (MimeObjectClass *class,
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MimeHeaders *hdrs);
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#if defined(DEBUG) && defined(XP_UNIX)
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static int MimeObject_debug_print (MimeObject *, FILE *, int32 depth);
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#endif
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static int
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MimeObjectClassInitialize(MimeObjectClass *class)
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{
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XP_ASSERT(!class->class_initialized);
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class->initialize = MimeObject_initialize;
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class->finalize = MimeObject_finalize;
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class->parse_begin = MimeObject_parse_begin;
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class->parse_buffer = MimeObject_parse_buffer;
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class->parse_line = MimeObject_parse_line;
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class->parse_eof = MimeObject_parse_eof;
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class->parse_end = MimeObject_parse_end;
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class->displayable_inline_p = MimeObject_displayable_inline_p;
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#if defined(DEBUG) && defined(XP_UNIX)
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class->debug_print = MimeObject_debug_print;
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#endif
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return 0;
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}
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static int
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MimeObject_initialize (MimeObject *obj)
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{
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/* This is an abstract class; it shouldn't be directly instanciated. */
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XP_ASSERT(obj->class != &mimeObjectClass);
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/* Set up the content-type and encoding. */
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if (!obj->content_type && obj->headers)
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obj->content_type = MimeHeaders_get (obj->headers, HEADER_CONTENT_TYPE,
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TRUE, FALSE);
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if (!obj->encoding && obj->headers)
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obj->encoding = MimeHeaders_get (obj->headers,
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HEADER_CONTENT_TRANSFER_ENCODING,
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TRUE, FALSE);
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/* Special case to normalize some types and encodings to a canonical form.
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(These are nonstandard types/encodings which have been seen to appear in
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multiple forms; we normalize them so that things like looking up icons
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and extensions has consistent behavior for the receiver, regardless of
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the "alias" type that the sender used.)
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*/
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if (!obj->content_type)
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;
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else if (!strcasecomp(obj->content_type, APPLICATION_UUENCODE2) ||
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!strcasecomp(obj->content_type, APPLICATION_UUENCODE3) ||
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!strcasecomp(obj->content_type, APPLICATION_UUENCODE4))
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{
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XP_FREE(obj->content_type);
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obj->content_type = XP_STRDUP(APPLICATION_UUENCODE);
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}
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else if (!strcasecomp(obj->content_type, IMAGE_XBM2) ||
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!strcasecomp(obj->content_type, IMAGE_XBM3))
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{
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XP_FREE(obj->content_type);
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obj->content_type = XP_STRDUP(IMAGE_XBM);
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}
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if (!obj->encoding)
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;
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else if (!strcasecomp(obj->encoding, ENCODING_UUENCODE2) ||
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!strcasecomp(obj->encoding, ENCODING_UUENCODE3) ||
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!strcasecomp(obj->encoding, ENCODING_UUENCODE4))
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{
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XP_FREE(obj->encoding);
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obj->encoding = XP_STRDUP(ENCODING_UUENCODE);
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}
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else if (!strcasecomp(obj->encoding, ENCODING_COMPRESS2))
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{
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XP_FREE(obj->encoding);
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obj->encoding = XP_STRDUP(ENCODING_COMPRESS);
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}
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else if (!strcasecomp(obj->encoding, ENCODING_GZIP2))
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{
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XP_FREE(obj->encoding);
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obj->encoding = XP_STRDUP(ENCODING_GZIP);
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}
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return 0;
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}
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static void
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MimeObject_finalize (MimeObject *obj)
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{
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obj->class->parse_eof (obj, FALSE);
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obj->class->parse_end (obj, FALSE);
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if (obj->headers)
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{
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MimeHeaders_free(obj->headers);
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obj->headers = 0;
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}
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/* Should have been freed by parse_eof, but just in case... */
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XP_ASSERT(!obj->ibuffer);
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XP_ASSERT(!obj->obuffer);
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FREEIF (obj->ibuffer);
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FREEIF (obj->obuffer);
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FREEIF(obj->content_type);
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FREEIF(obj->encoding);
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if (obj->options && obj->options->state)
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{
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XP_FREE(obj->options->state);
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obj->options->state = 0;
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}
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}
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static int
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MimeObject_parse_begin (MimeObject *obj)
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{
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XP_ASSERT (!obj->closed_p);
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/* If we haven't set up the state object yet, then this should be
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the outermost object... */
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if (obj->options && !obj->options->state)
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{
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XP_ASSERT(!obj->headers); /* should be the outermost object. */
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obj->options->state = XP_NEW(MimeParseStateObject);
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if (!obj->options->state) return MK_OUT_OF_MEMORY;
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XP_MEMSET(obj->options->state, 0, sizeof(*obj->options->state));
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obj->options->state->root = obj;
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obj->options->state->separator_suppressed_p = TRUE; /* no first sep */
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}
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/* Decide whether this object should be output or not... */
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if (!obj->options || !obj->options->output_fn)
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obj->output_p = FALSE;
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else if (!obj->options->part_to_load)
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obj->output_p = TRUE;
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else
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{
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char *id = mime_part_address(obj);
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if (!id) return MK_OUT_OF_MEMORY;
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obj->output_p = !XP_STRCMP(id, obj->options->part_to_load);
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XP_FREE(id);
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}
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#ifndef MOZILLA_30
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/* Way to destroy any notions of modularity or class hierarchy, Terry! */
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if (obj->options && obj->options->nice_html_only_p) {
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if (!mime_subclass_p(obj->class,
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(MimeObjectClass*) &mimeInlineTextHTMLClass) &&
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!mime_subclass_p(obj->class,
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(MimeObjectClass*) &mimeInlineTextPlainClass) &&
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!mime_subclass_p(obj->class,
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(MimeObjectClass*) &mimeContainerClass)) {
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obj->output_p = FALSE;
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}
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}
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#endif /* !MOZILLA_30 */
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return 0;
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}
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static int
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MimeObject_parse_buffer (char *buffer, int32 size, MimeObject *obj)
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{
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XP_ASSERT(!obj->closed_p);
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if (obj->closed_p) return -1;
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return XP_LineBuffer (buffer, size,
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&obj->ibuffer, &obj->ibuffer_size, &obj->ibuffer_fp,
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TRUE,
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((int32 (*) (char *, uint32, void *))
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/* This cast is to turn void into MimeObject */
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obj->class->parse_line),
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obj);
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}
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static int
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MimeObject_parse_line (char *line, int32 length, MimeObject *obj)
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{
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/* This method should never be called. */
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XP_ASSERT(0);
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return -1;
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}
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static int
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MimeObject_parse_eof (MimeObject *obj, XP_Bool abort_p)
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{
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if (obj->closed_p) return 0;
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XP_ASSERT(!obj->parsed_p);
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/* If there is still data in the ibuffer, that means that the last line of
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this part didn't end in a newline; so push it out anyway (this means that
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the parse_line method will be called with a string with no trailing
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newline, which isn't the usual case.)
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*/
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if (!abort_p &&
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obj->ibuffer_fp > 0)
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{
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int status = obj->class->parse_line (obj->ibuffer, obj->ibuffer_fp, obj);
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obj->ibuffer_fp = 0;
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if (status < 0)
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{
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obj->closed_p = TRUE;
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return status;
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}
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}
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obj->closed_p = TRUE;
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return 0;
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}
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static int
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MimeObject_parse_end (MimeObject *obj, XP_Bool abort_p)
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{
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if (obj->parsed_p)
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{
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XP_ASSERT(obj->closed_p);
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return 0;
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}
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/* We won't be needing these buffers any more; nuke 'em. */
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FREEIF(obj->ibuffer);
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obj->ibuffer_fp = 0;
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obj->ibuffer_size = 0;
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FREEIF(obj->obuffer);
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obj->obuffer_fp = 0;
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obj->obuffer_size = 0;
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obj->parsed_p = TRUE;
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return 0;
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}
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static XP_Bool
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MimeObject_displayable_inline_p (MimeObjectClass *class, MimeHeaders *hdrs)
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{
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XP_ASSERT(0); /* This method should never be called. */
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return FALSE;
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}
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#if defined(DEBUG) && defined(XP_UNIX)
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static int
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MimeObject_debug_print (MimeObject *obj, FILE *stream, int32 depth)
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{
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int i;
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char *addr = mime_part_address(obj);
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for (i=0; i < depth; i++)
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fprintf(stream, " ");
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fprintf(stream, "<%s %s 0x%08X>\n", obj->class->class_name,
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addr ? addr : "???",
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(uint32) obj);
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FREEIF(addr);
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return 0;
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}
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#endif
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