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-rw-r--r--mailnews/mime/src/mimeleaf.cpp220
1 files changed, 220 insertions, 0 deletions
diff --git a/mailnews/mime/src/mimeleaf.cpp b/mailnews/mime/src/mimeleaf.cpp
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index 000000000..b76d0ce3b
--- /dev/null
+++ b/mailnews/mime/src/mimeleaf.cpp
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+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "modmimee.h"
+#include "mimeleaf.h"
+#include "nsMimeTypes.h"
+#include "prmem.h"
+#include "plstr.h"
+#include "prlog.h"
+#include "nsMimeStringResources.h"
+
+#define MIME_SUPERCLASS mimeObjectClass
+MimeDefClass(MimeLeaf, MimeLeafClass, mimeLeafClass, &MIME_SUPERCLASS);
+
+static int MimeLeaf_initialize (MimeObject *);
+static void MimeLeaf_finalize (MimeObject *);
+static int MimeLeaf_parse_begin (MimeObject *);
+static int MimeLeaf_parse_buffer (const char *, int32_t, MimeObject *);
+static int MimeLeaf_parse_line (const char *, int32_t, MimeObject *);
+static int MimeLeaf_close_decoder (MimeObject *);
+static int MimeLeaf_parse_eof (MimeObject *, bool);
+static bool MimeLeaf_displayable_inline_p (MimeObjectClass *clazz,
+ MimeHeaders *hdrs);
+
+static int
+MimeLeafClassInitialize(MimeLeafClass *clazz)
+{
+ MimeObjectClass *oclass = (MimeObjectClass *) clazz;
+ NS_ASSERTION(!oclass->class_initialized, "1.1 <rhp@netscape.com> 19 Mar 1999 12:00");
+ oclass->initialize = MimeLeaf_initialize;
+ oclass->finalize = MimeLeaf_finalize;
+ oclass->parse_begin = MimeLeaf_parse_begin;
+ oclass->parse_buffer = MimeLeaf_parse_buffer;
+ oclass->parse_line = MimeLeaf_parse_line;
+ oclass->parse_eof = MimeLeaf_parse_eof;
+ oclass->displayable_inline_p = MimeLeaf_displayable_inline_p;
+ clazz->close_decoder = MimeLeaf_close_decoder;
+
+ /* Default `parse_buffer' method is one which line-buffers the now-decoded
+ data and passes it on to `parse_line'. (We snarf the implementation of
+ this method from our superclass's implementation of `parse_buffer', which
+ inherited it from MimeObject.)
+ */
+ clazz->parse_decoded_buffer =
+ ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_buffer;
+
+ return 0;
+}
+
+
+static int
+MimeLeaf_initialize (MimeObject *obj)
+{
+ /* This is an abstract class; it shouldn't be directly instantiated. */
+ NS_ASSERTION(obj->clazz != (MimeObjectClass *) &mimeLeafClass, "1.1 <rhp@netscape.com> 19 Mar 1999 12:00");
+
+ // Initial size is -1 (meaning "unknown size") - we'll correct it in
+ // parse_buffer.
+ MimeLeaf *leaf = (MimeLeaf *) obj;
+ leaf->sizeSoFar = -1;
+
+ return ((MimeObjectClass*)&MIME_SUPERCLASS)->initialize(obj);
+}
+
+
+static void
+MimeLeaf_finalize (MimeObject *object)
+{
+ MimeLeaf *leaf = (MimeLeaf *)object;
+ object->clazz->parse_eof (object, false);
+
+ /* Free the decoder data, if it's still around. It was probably freed
+ in MimeLeaf_parse_eof(), but just in case... */
+ if (leaf->decoder_data)
+ {
+ MimeDecoderDestroy(leaf->decoder_data, true);
+ leaf->decoder_data = 0;
+ }
+
+ ((MimeObjectClass*)&MIME_SUPERCLASS)->finalize (object);
+}
+
+
+static int
+MimeLeaf_parse_begin (MimeObject *obj)
+{
+ MimeLeaf *leaf = (MimeLeaf *) obj;
+ MimeDecoderData *(*fn) (MimeConverterOutputCallback, void*) = 0;
+
+ /* Initialize a decoder if necessary.
+ */
+ if (!obj->encoding ||
+ // If we need the object as "raw" for saving or forwarding,
+ // don't decode text parts of message types. Other output formats,
+ // like "display" (nsMimeMessageBodyDisplay), need decoding.
+ (obj->options->format_out == nsMimeOutput::nsMimeMessageRaw &&
+ obj->parent && obj->parent->output_p &&
+ (!PL_strcasecmp(obj->parent->content_type, MESSAGE_NEWS) ||
+ !PL_strcasecmp(obj->parent->content_type, MESSAGE_RFC822))))
+ /* no-op */ ;
+ else if (!PL_strcasecmp(obj->encoding, ENCODING_BASE64))
+ fn = &MimeB64DecoderInit;
+ else if (!PL_strcasecmp(obj->encoding, ENCODING_QUOTED_PRINTABLE))
+ leaf->decoder_data =
+ MimeQPDecoderInit(((MimeConverterOutputCallback)
+ ((MimeLeafClass *)obj->clazz)->parse_decoded_buffer),
+ obj, obj);
+ else if (!PL_strcasecmp(obj->encoding, ENCODING_UUENCODE) ||
+ !PL_strcasecmp(obj->encoding, ENCODING_UUENCODE2) ||
+ !PL_strcasecmp(obj->encoding, ENCODING_UUENCODE3) ||
+ !PL_strcasecmp(obj->encoding, ENCODING_UUENCODE4))
+ fn = &MimeUUDecoderInit;
+ else if (!PL_strcasecmp(obj->encoding, ENCODING_YENCODE))
+ fn = &MimeYDecoderInit;
+
+ if (fn)
+ {
+ leaf->decoder_data =
+ fn (/* The MimeConverterOutputCallback cast is to turn the `void' argument
+ into `MimeObject'. */
+ ((MimeConverterOutputCallback)
+ ((MimeLeafClass *)obj->clazz)->parse_decoded_buffer),
+ obj);
+
+ if (!leaf->decoder_data)
+ return MIME_OUT_OF_MEMORY;
+ }
+
+ return ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
+}
+
+
+static int
+MimeLeaf_parse_buffer (const char *buffer, int32_t size, MimeObject *obj)
+{
+ MimeLeaf *leaf = (MimeLeaf *) obj;
+
+ NS_ASSERTION(!obj->closed_p, "1.1 <rhp@netscape.com> 19 Mar 1999 12:00");
+ if (obj->closed_p) return -1;
+
+ /* If we're not supposed to write this object, bug out now.
+ */
+ if (!obj->output_p ||
+ !obj->options ||
+ !obj->options->output_fn)
+ return 0;
+
+ int rv;
+ if (leaf->sizeSoFar == -1)
+ leaf->sizeSoFar = 0;
+
+ if (leaf->decoder_data &&
+ obj->options &&
+ obj->options->format_out != nsMimeOutput::nsMimeMessageDecrypt
+ && obj->options->format_out != nsMimeOutput::nsMimeMessageAttach) {
+ int outSize = 0;
+ rv = MimeDecoderWrite (leaf->decoder_data, buffer, size, &outSize);
+ leaf->sizeSoFar += outSize;
+ }
+ else {
+ rv = ((MimeLeafClass *)obj->clazz)->parse_decoded_buffer (buffer, size,
+ obj);
+ leaf->sizeSoFar += size;
+ }
+ return rv;
+}
+
+static int
+MimeLeaf_parse_line (const char *line, int32_t length, MimeObject *obj)
+{
+ NS_ERROR("MimeLeaf_parse_line shouldn't ever be called.");
+ return -1;
+}
+
+
+static int
+MimeLeaf_close_decoder (MimeObject *obj)
+{
+ MimeLeaf *leaf = (MimeLeaf *) obj;
+
+ if (leaf->decoder_data)
+ {
+ int status = MimeDecoderDestroy(leaf->decoder_data, false);
+ leaf->decoder_data = 0;
+ return status;
+ }
+
+ return 0;
+}
+
+
+static int
+MimeLeaf_parse_eof (MimeObject *obj, bool abort_p)
+{
+ MimeLeaf *leaf = (MimeLeaf *) obj;
+ if (obj->closed_p) return 0;
+
+ /* Close off the decoder, to cause it to give up any buffered data that
+ it is still holding.
+ */
+ if (leaf->decoder_data)
+ {
+ int status = MimeLeaf_close_decoder(obj);
+ if (status < 0) return status;
+ }
+
+ /* Now run the superclass's parse_eof, which will force out the line
+ buffer (which we may have just repopulated, above.)
+ */
+ return ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_eof (obj, abort_p);
+}
+
+
+static bool
+MimeLeaf_displayable_inline_p (MimeObjectClass *clazz, MimeHeaders *hdrs)
+{
+ return true;
+}
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