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gecko-dev/network/cnvts/cvactive.c

487 строки
13 KiB
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 1.0 (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.
*/
#include "xp.h"
#include "plstr.h"
#include "prmem.h"
#include "netutils.h"
#include "mkselect.h"
#include "mktcp.h"
#include "cvactive.h"
#include "mkgeturl.h"
#include "mkstream.h"
#include "glhist.h"
#include "merrors.h"
extern int MK_OUT_OF_MEMORY;
typedef struct _DataObject {
int state;
NET_StreamClass *next_stream;
char *prev_buffer;
int32 prev_buffer_len;
MWContext *window_id;
int format_out;
URL_Struct *URL_s;
PRBool signal_at_end_of_multipart;
} DataObject;
#define NORMAL_S 1
#define FOUND_BOUNDARY_S 2
#define MAX_MIME_LINE 200
/* parse a mime/multipart stream. The boundary is already
* known and we start off in the content of the original
* message/822 body.
*
* buffer data up to the size of the passed in data length
* for efficiency of the upstream module.
*/
PRIVATE int net_MultipleDocumentWrite (NET_StreamClass *stream, CONST char* s, int32 l)
{
int32 i=0;
int32 line_length=1;
int rv=0;
char *cp;
char *line;
char *push_buffer=NULL;
int32 push_buffer_size=0;
PRBool all_done=PR_FALSE;
DataObject *obj=stream->data_object;
BlockAllocCat(obj->prev_buffer, obj->prev_buffer_len, s, l);
obj->prev_buffer_len += l;
if(!obj->prev_buffer)
return(MK_OUT_OF_MEMORY);
line = obj->prev_buffer;
/* try and find a line
*/
for(cp=obj->prev_buffer; i < obj->prev_buffer_len; cp++, i++, line_length++)
{
if(*cp == '\n')
{
switch(obj->state)
{
case NORMAL_S:
{
char *cp2 = line;
int blength = PL_strlen(obj->URL_s->boundary);
/* look for boundary. We can rest assured that these
PL_strncmp() calls are safe, because we know that the
valid portion of the string starting at cp2 has a
newline in it (at *cp), and we know that boundary
strings never have newlines in them. */
if((!PL_strncmp(cp2, "--",2) &&
!PL_strncmp(cp2+2,
obj->URL_s->boundary,
blength))
|| (!PL_strncmp(cp2,
obj->URL_s->boundary,
blength)))
{
TRACEMSG(("Found boundary: %s", obj->URL_s->boundary));
obj->state = FOUND_BOUNDARY_S;
if(obj->next_stream)
{
if(push_buffer)
{
/* strip the last newline before the
* boundary
*/
push_buffer_size--;
/* if there is a CR as well as a LF
* strip that too
*/
if(push_buffer_size > 0 && push_buffer[push_buffer_size-1] == CR)
push_buffer_size--;
rv = (*obj->next_stream->put_block)
(obj->next_stream,
push_buffer,
push_buffer_size);
PR_Free(push_buffer);
push_buffer = NULL;
push_buffer_size = 0;
}
TRACEMSG(("Completeing an open stream"));
/* if this stream is not the last one, set a flag
before completion to let completion do special stuff */
PR_ASSERT(cp2 + blength <= cp);
/* Because the above PL_strcmp calls succeeded.
Because this is true, we know the first call
to PL_strncmp below is always safe, but we
need to check lengths before we can be sure
the other call is safe. */
if( (cp2 + blength + 2 < cp &&
!PL_strncmp(cp2+2+blength, "--",2))
|| !PL_strncmp(cp2+blength, "--",2))
{
/* very last boundary */
obj->next_stream->is_multipart = PR_FALSE;
/* set the all_done flag when
* we have found the final boundary
*/
all_done = PR_TRUE;
}
else
{
obj->next_stream->is_multipart = PR_TRUE;
}
/* complete the last stream
*/
(*obj->next_stream->complete)
(obj->next_stream);
PR_Free(obj->next_stream);
obj->next_stream = NULL;
}
/* move the line ptr up to new data */
line = cp+1;
line_length=1; /* reset */
if(all_done && obj->signal_at_end_of_multipart)
return(MK_MULTIPART_MESSAGE_COMPLETED);
break;
}
else
{
TRACEMSG(("Pushing line (actually buffering)"));
/* didn't find the boundary
*/
if(obj->next_stream)
{
BlockAllocCat(push_buffer, push_buffer_size,
line, line_length);
push_buffer_size += line_length;
if(!push_buffer)
return(MK_OUT_OF_MEMORY);
}
/* move the line ptr up to new data */
line = cp+1;
line_length=0; /* reset */
}
break;
}
case FOUND_BOUNDARY_S:
PR_ASSERT(*cp == '\n'); /* from the 'if' above */
/* terminate at the newline.
* now 'line' points to a valid NULL terminated C string
*/
*cp = '\0';
TRACEMSG(("Parsing header: >%s<", line));
/* parse mime headers
* stop when a blank line is encountered
*/
if(*line == '\0' || *line == '\r')
{
int format_out;
obj->state = NORMAL_S;
TRACEMSG(("Found end of headers"));
if (obj->URL_s->content_type == NULL)
StrAllocCopy(obj->URL_s->content_type, TEXT_PLAIN);
/* abort all existing streams. We
* have to do this to prevent the
* image lib and other things from
* continuing to load the page after
* we left.
*
* don't abort other streams if it's
* just a new inline image or if the
* stream is not going to the screen
*/
if(CLEAR_CACHE_BIT(obj->format_out) != FO_INTERNAL_IMAGE
&& (!PL_strncasecmp(obj->URL_s->content_type,
"text", 4)
||
!PL_strncasecmp(obj->URL_s->content_type,
"image", 4)) )
{
NET_SilentInterruptWindow(obj->window_id);
format_out = obj->format_out;
}
else
{
/* don't cache image animations... */
format_out = CLEAR_CACHE_BIT(obj->format_out);
}
/* libimg and libplugin use the fe_data to store
* urls data, so clear it only if its not them */
if( (CLEAR_CACHE_BIT(obj->format_out) != FO_INTERNAL_IMAGE)
&& (CLEAR_CACHE_BIT(obj->format_out) != FO_PLUGIN)
&& (CLEAR_CACHE_BIT(obj->format_out) != FO_BYTERANGE)
&& PL_strncasecmp(obj->URL_s->content_type, "image", 5))
{
obj->URL_s->fe_data = NULL;
}
/* build a stream
*/
obj->next_stream = NET_StreamBuilder(format_out,
obj->URL_s,
obj->window_id);
if(!obj->next_stream)
return(MK_UNABLE_TO_CONVERT);
}
else if(!PL_strncasecmp(line, "CONTENT-TYPE:", 13))
{
strtok(line+13, ";"); /* terminate at ; */
StrAllocCopy(obj->URL_s->content_type,
XP_StripLine(line+13));
if(!obj->URL_s->content_type || !*obj->URL_s->content_type)
StrAllocCopy(obj->URL_s->content_type, TEXT_PLAIN);
TRACEMSG(("found new content_type: %s",
obj->URL_s->content_type));
}
else
{
/* Pass all other headers to the MIME header parser
*/
char *value = PL_strchr(line, ':');
if(value)
value++;
NET_ParseMimeHeader(NET_AllowForeignCookies,
obj->window_id,
obj->URL_s,
line,
value, PR_FALSE);
}
line = cp+1;
line_length = 0;
break;
default:
assert(0);
break;
}
} /* end if */
} /* end for */
if(line_length > MAX_MIME_LINE * 2)
{
int32 new_size;
TRACEMSG(("Line too long pushing it"));
if(obj->next_stream)
{
if(push_buffer)
{
rv = (*obj->next_stream->put_block)(obj->next_stream,
push_buffer,
push_buffer_size);
rv = (*obj->next_stream->put_block)(obj->next_stream,
line,
MAX_MIME_LINE);
PR_Free(push_buffer);
push_buffer = 0;
push_buffer_size = 0;
}
else
{
rv = (*obj->next_stream->put_block)(obj->next_stream,
line,
MAX_MIME_LINE);
}
if(rv < 0)
return(rv);
}
/* newsize equals the old size minus the difference
* between line and the start of the old buffer and
* the MAX_MIME_LENGTH that we just wrote out
*/
new_size = obj->prev_buffer_len -
((line - obj->prev_buffer) + MAX_MIME_LINE);
memmove(obj->prev_buffer, line+MAX_MIME_LINE, new_size);
obj->prev_buffer_len = new_size;
return(0);
}
if(line != obj->prev_buffer)
{
/* some part of the line has been digested, get rid of
* the part that has been used
*/
obj->prev_buffer_len -= (line - obj->prev_buffer);
memmove(obj->prev_buffer, line, obj->prev_buffer_len);
}
/* if there is anything in the push buffer send it now
*/
if(push_buffer)
{
if(obj->next_stream)
{
TRACEMSG(("Pushing buffered data"));
rv = (*obj->next_stream->put_block)(obj->next_stream,
push_buffer,
push_buffer_size);
}
PR_Free(push_buffer);
if (rv < 0)
return rv;
}
return(0);
}
/* is the stream ready for writeing?
*/
PRIVATE unsigned int net_MultipleDocumentWriteReady (NET_StreamClass * stream)
{
DataObject *obj=stream->data_object;
if(obj->next_stream)
return((*obj->next_stream->is_write_ready)(obj->next_stream));
else
return(MAX_WRITE_READY);
}
PRIVATE void net_MultipleDocumentComplete (NET_StreamClass *stream)
{
DataObject *obj=stream->data_object;
if(obj->next_stream)
{
(*obj->next_stream->complete)(obj->next_stream);
PR_Free(obj->next_stream);
}
PR_FREEIF(obj->prev_buffer);
PR_Free(obj);
return;
}
PRIVATE void net_MultipleDocumentAbort (NET_StreamClass *stream, int status)
{
DataObject *obj=stream->data_object;
if(obj->next_stream)
{
(*obj->next_stream->abort)(obj->next_stream, status);
PR_Free(obj->next_stream);
}
PR_FREEIF(obj->prev_buffer);
PR_Free(obj);
return;
}
PUBLIC NET_StreamClass *
CV_MakeMultipleDocumentStream (int format_out,
void *data_object,
URL_Struct *URL_s,
MWContext *window_id)
{
DataObject* obj;
NET_StreamClass* stream;
TRACEMSG(("Setting up display stream. Have URL: %s\n", URL_s->address));
GH_UpdateGlobalHistory(URL_s);
URL_s->is_active = PR_TRUE; /* set to disable view source */
stream = PR_NEW(NET_StreamClass);
if(stream == NULL)
return(NULL);
obj = PR_NEW(DataObject);
if (obj == NULL)
return(NULL);
memset(obj, 0, sizeof(DataObject));
if(CVACTIVE_SIGNAL_AT_END_OF_MULTIPART == (int) data_object)
obj->signal_at_end_of_multipart = PR_TRUE;
stream->name = "Multiple Document";
stream->complete = (MKStreamCompleteFunc) net_MultipleDocumentComplete;
stream->abort = (MKStreamAbortFunc) net_MultipleDocumentAbort;
stream->put_block = (MKStreamWriteFunc) net_MultipleDocumentWrite;
stream->is_write_ready = (MKStreamWriteReadyFunc) net_MultipleDocumentWriteReady;
stream->data_object = obj; /* document info object */
stream->window_id = window_id;
/* don't cache these
format_out = CLEAR_CACHE_BIT(format_out);
*/
/* enable clicking since it doesnt go through the cache
* code
*/
FE_EnableClicking(window_id);
obj->next_stream = NULL;
obj->window_id = window_id;
obj->format_out = format_out;
obj->URL_s = URL_s;
obj->state = NORMAL_S;
/* make sure that we have a real boundary.
* if not fill in '--' as a boundary
*/
if(!URL_s->boundary)
StrAllocCopy(URL_s->boundary, "--");
/* overwrite the current content type with TEXT/PLAIN since
* we want that as the default content-type for
* body parts
*/
StrAllocCopy(URL_s->content_type, TEXT_PLAIN);
TRACEMSG(("Returning stream from NET_MultipleDocumentConverter\n"));
return stream;
}
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