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gecko-dev/lib/libmime/mimesun.c

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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 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
/* mimesun.c --- MimeSunAttachment, for X-Sun-Attachment message contents
Created: Jamie Zawinski <jwz@netscape.com>, 15-May-96.
*/
#include "rosetta.h"
#include "mimesun.h"
#define MIME_SUPERCLASS mimeMultipartClass
MimeDefClass(MimeSunAttachment, MimeSunAttachmentClass,
mimeSunAttachmentClass, &MIME_SUPERCLASS);
static MimeMultipartBoundaryType MimeSunAttachment_check_boundary(MimeObject *,
const char *,
int32);
static int MimeSunAttachment_create_child(MimeObject *);
static int MimeSunAttachment_parse_child_line (MimeObject *, char *, int32,
XP_Bool);
static int MimeSunAttachment_parse_begin (MimeObject *);
static int MimeSunAttachment_parse_eof (MimeObject *, XP_Bool);
static int
MimeSunAttachmentClassInitialize(MimeSunAttachmentClass *class)
{
MimeObjectClass *oclass = (MimeObjectClass *) class;
MimeMultipartClass *mclass = (MimeMultipartClass *) class;
XP_ASSERT(!oclass->class_initialized);
oclass->parse_begin = MimeSunAttachment_parse_begin;
oclass->parse_eof = MimeSunAttachment_parse_eof;
mclass->check_boundary = MimeSunAttachment_check_boundary;
mclass->create_child = MimeSunAttachment_create_child;
mclass->parse_child_line = MimeSunAttachment_parse_child_line;
return 0;
}
static int
MimeSunAttachment_parse_begin (MimeObject *obj)
{
int status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_begin(obj);
if (status < 0) return status;
/* Sun messages always have separators at the beginning. */
return MimeObject_write_separator(obj);
}
static int
MimeSunAttachment_parse_eof (MimeObject *obj, XP_Bool abort_p)
{
int status = 0;
status = ((MimeObjectClass*)&MIME_SUPERCLASS)->parse_eof(obj, abort_p);
if (status < 0) return status;
/* Sun messages always have separators at the end. */
if (!abort_p)
{
status = MimeObject_write_separator(obj);
if (status < 0) return status;
}
return 0;
}
static MimeMultipartBoundaryType
MimeSunAttachment_check_boundary(MimeObject *obj, const char *line,
int32 length)
{
/* ten dashes */
if (line &&
line[0] == '-' && line[1] == '-' && line[2] == '-' && line[3] == '-' &&
line[4] == '-' && line[5] == '-' && line[6] == '-' && line[7] == '-' &&
line[8] == '-' && line[9] == '-' &&
(line[10] == CR || line[10] == LF))
return MimeMultipartBoundaryTypeSeparator;
else
return MimeMultipartBoundaryTypeNone;
}
static int
MimeSunAttachment_create_child(MimeObject *obj)
{
MimeMultipart *mult = (MimeMultipart *) obj;
int status = 0;
char *sun_data_type = 0;
const char *mime_ct = 0, *sun_enc_info = 0, *mime_cte = 0;
char *mime_ct2 = 0; /* sometimes we need to copy; this is for freeing. */
MimeObject *child = 0;
mult->state = MimeMultipartPartLine;
sun_data_type = (mult->hdrs
? MimeHeaders_get (mult->hdrs, HEADER_X_SUN_DATA_TYPE,
TRUE, FALSE)
: 0);
if (sun_data_type)
{
int i;
static const struct { const char *in, *out; } sun_types[] = {
/* Convert recognised Sun types to the corresponding MIME types,
and convert unrecognized ones based on the file extension and
the mime.types file.
These are the magic types used by MailTool that I can determine.
The only actual written spec I've found only listed the first few.
The rest were found by inspection (both of real-world messages,
and by running `strings' on the MailTool binary, and on the file
/usr/openwin/lib/cetables/cetables (the "Class Engine", Sun's
equivalent to .mailcap and mime.types.)
*/
{ "default", TEXT_PLAIN },
{ "default-doc", TEXT_PLAIN },
{ "text", TEXT_PLAIN },
{ "scribe", TEXT_PLAIN },
{ "sgml", TEXT_PLAIN },
{ "tex", TEXT_PLAIN },
{ "troff", TEXT_PLAIN },
{ "c-file", TEXT_PLAIN },
{ "h-file", TEXT_PLAIN },
{ "readme-file", TEXT_PLAIN },
{ "shell-script", TEXT_PLAIN },
{ "cshell-script", TEXT_PLAIN },
{ "makefile", TEXT_PLAIN },
{ "hidden-docs", TEXT_PLAIN },
{ "message", MESSAGE_RFC822 },
{ "mail-message", MESSAGE_RFC822 },
{ "mail-file", TEXT_PLAIN },
{ "gif-file", IMAGE_GIF },
{ "jpeg-file", IMAGE_JPG },
{ "ppm-file", IMAGE_PPM },
{ "pgm-file", "image/x-portable-graymap" },
{ "pbm-file", "image/x-portable-bitmap" },
{ "xpm-file", "image/x-xpixmap" },
{ "ilbm-file", "image/ilbm" },
{ "tiff-file", "image/tiff" },
{ "photocd-file", "image/x-photo-cd" },
{ "sun-raster", "image/x-sun-raster" },
{ "audio-file", AUDIO_BASIC },
{ "postscript", APPLICATION_POSTSCRIPT },
{ "postscript-file", APPLICATION_POSTSCRIPT },
{ "framemaker-document", "application/x-framemaker" },
{ "sundraw-document", "application/x-sun-draw" },
{ "sunpaint-document", "application/x-sun-paint" },
{ "sunwrite-document", "application/x-sun-write" },
{ "islanddraw-document", "application/x-island-draw" },
{ "islandpaint-document", "application/x-island-paint" },
{ "islandwrite-document", "application/x-island-write" },
{ "sun-executable", APPLICATION_OCTET_STREAM },
{ "default-app", APPLICATION_OCTET_STREAM },
{ 0, 0 }};
for (i = 0; sun_types[i].in; i++)
if (!strcasecomp(sun_data_type, sun_types[i].in))
{
mime_ct = sun_types[i].out;
break;
}
}
/* If we didn't find a type, look at the extension on the file name.
*/
if (!mime_ct &&
obj->options &&
obj->options->file_type_fn)
{
char *name = MimeHeaders_get_name(mult->hdrs);
if (name)
{
mime_ct2 = obj->options->file_type_fn(name,
obj->options->stream_closure);
mime_ct = mime_ct2;
XP_FREE(name);
if (!mime_ct2 || !strcasecomp (mime_ct2, UNKNOWN_CONTENT_TYPE))
{
FREEIF(mime_ct2);
mime_ct = APPLICATION_OCTET_STREAM;
}
}
}
if (!mime_ct)
mime_ct = APPLICATION_OCTET_STREAM;
FREEIF(sun_data_type);
/* Convert recognised Sun encodings to the corresponding MIME encodings.
However, if the X-Sun-Encoding-Info field contains more than one
encoding (that is, contains a comma) then assign it the encoding of
the *rightmost* element in the list; and change its Content-Type to
application/octet-stream. Examples:
Sun Type: Translates To:
================== ====================
type: TEXT type: text/plain
encoding: COMPRESS encoding: x-compress
type: POSTSCRIPT type: application/x-compress
encoding: COMPRESS,UUENCODE encoding: x-uuencode
type: TEXT type: application/octet-stream
encoding: UNKNOWN,UUENCODE encoding: x-uuencode
*/
sun_data_type = (mult->hdrs
? MimeHeaders_get (mult->hdrs, HEADER_X_SUN_ENCODING_INFO,
FALSE,FALSE)
: 0);
sun_enc_info = sun_data_type;
/* this "adpcm-compress" pseudo-encoding is some random junk that
MailTool adds to the encoding description of .AU files: we can
ignore it if it is the leftmost element of the encoding field.
(It looks like it's created via `audioconvert -f g721'. Why?
Who knows.)
*/
if (sun_enc_info && !strncasecomp (sun_enc_info, "adpcm-compress", 14))
{
sun_enc_info += 14;
while (XP_IS_SPACE(*sun_enc_info) || *sun_enc_info == ',')
sun_enc_info++;
}
/* Extract the last element of the encoding field, changing the content
type if necessary (as described above.)
*/
if (sun_enc_info && *sun_enc_info)
{
const char *prev;
const char *end = XP_STRRCHR(sun_enc_info, ',');
if (end)
{
const char *start = sun_enc_info;
sun_enc_info = end + 1;
while (XP_IS_SPACE(*sun_enc_info))
sun_enc_info++;
for (prev = end-1; prev > start && *prev != ','; prev--)
;
if (*prev == ',') prev++;
if (!strncasecomp (prev, "uuencode", end-prev))
mime_ct = APPLICATION_UUENCODE;
else if (!strncasecomp (prev, "gzip", end-prev))
mime_ct = APPLICATION_GZIP;
else if (!strncasecomp (prev, "compress", end-prev))
mime_ct = APPLICATION_COMPRESS;
else if (!strncasecomp (prev, "default-compress", end-prev))
mime_ct = APPLICATION_COMPRESS;
else
mime_ct = APPLICATION_OCTET_STREAM;
}
}
/* Convert the remaining Sun encoding to a MIME encoding.
If it isn't known, change the content-type instead.
*/
if (!sun_enc_info || !*sun_enc_info)
;
else if (!strcasecomp(sun_enc_info,"compress")) mime_cte = ENCODING_COMPRESS;
else if (!strcasecomp(sun_enc_info,"uuencode")) mime_cte = ENCODING_UUENCODE;
else if (!strcasecomp(sun_enc_info,"gzip")) mime_cte = ENCODING_GZIP;
else mime_ct = APPLICATION_OCTET_STREAM;
FREEIF(sun_data_type);
/* Now that we know its type and encoding, create a MimeObject to represent
this part.
*/
child = mime_create(mime_ct, mult->hdrs, obj->options);
if (!child)
{
status = MK_OUT_OF_MEMORY;
goto FAIL;
}
/* Fake out the child's content-type and encoding (it probably doesn't have
one right now, because the X-Sun- headers aren't generally recognised by
the rest of this library.)
*/
FREEIF(child->content_type);
FREEIF(child->encoding);
XP_ASSERT(mime_ct);
child->content_type = (mime_ct ? XP_STRDUP(mime_ct) : 0);
child->encoding = (mime_cte ? XP_STRDUP(mime_cte) : 0);
status = ((MimeContainerClass *) obj->class)->add_child(obj, child);
if (status < 0)
{
mime_free(child);
child = 0;
goto FAIL;
}
/* Sun attachments always have separators between parts. */
status = MimeObject_write_separator(obj);
if (status < 0) goto FAIL;
/* And now that we've added this new object to our list of
children, start its parser going. */
status = child->class->parse_begin(child);
if (status < 0) goto FAIL;
FAIL:
FREEIF(mime_ct2);
FREEIF(sun_data_type);
return status;
}
static int
MimeSunAttachment_parse_child_line (MimeObject *obj, char *line, int32 length,
XP_Bool first_line_p)
{
MimeContainer *cont = (MimeContainer *) obj;
MimeObject *kid;
/* This is simpler than MimeMultipart->parse_child_line in that it doesn't
play games about body parts without trailing newlines.
*/
XP_ASSERT(cont->nchildren > 0);
if (cont->nchildren <= 0)
return -1;
kid = cont->children[cont->nchildren-1];
XP_ASSERT(kid);
if (!kid) return -1;
return kid->class->parse_buffer (line, length, kid);
}
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