/* vi: set sts=2 sw=2 :*/
-
/* rfxswf.c
Library for creating and reading SWF files or parts of it.
Part of the swftools package.
- Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
-
- This file is distributed under the GPL, see file COPYING for details
+ Copyright (c) 2000-2003 Rainer Böhme <rfxswf@reflex-studio.de>
+ Copyright (c) 2003 Matthias Kramm <kramm@quiss.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-*/
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "rfxswf.h"
#include <zlib.h>
#endif // HAVE_ZLIB
-#define LAME
+#ifndef RFXSWF_DISABLESOUND
+#ifdef HAVE_LAME
#include "lame/lame.h"
+#endif
+#endif
+
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
#include "./bitio.h"
+#include "./MD5.h"
// internal constants
TAG * swf_NextTag(TAG * t) { return t->next; }
TAG * swf_PrevTag(TAG * t) { return t->prev; }
-int swf_GetFrameNo(TAG * t) { return t->frame; }
U16 swf_GetTagID(TAG * t) { return t->id; }
U32 swf_GetTagLen(TAG * t) { return t->len; }
U8* swf_GetTagLenPtr(TAG * t) { return &(t->data[t->len]); }
U32 swf_GetTagPos(TAG * t) { return t->pos; }
-// Basic Data Access Functions
-
-#define swf_ResetReadBits(tag) if (tag->readBit) { tag->pos++; tag->readBit = 0; }
-#define swf_ResetWriteBits(tag) if (tag->writeBit) { tag->writeBit = 0; }
-
// for future purpose: avoid high level lib functions to change tagpos/bitpos
#define swf_SaveTagPos(tag)
void swf_SetTagPos(TAG * t,U32 pos)
{ swf_ResetReadBits(t);
if (pos<=t->len) t->pos = pos;
- #ifdef DEBUG_RFXSWF
- else fprintf(stderr,"SetTagPos() out of bounds: TagID = %i\n",t->id);
- #endif
+ else {
+#ifdef DEBUG_RFXSWF
+ fprintf(stderr,"SetTagPos(%d) out of bounds: TagID = %i\n",pos, t->id);
+#endif
+ }
}
char* swf_GetString(TAG*t)
void swf_GetRGBA(TAG * t, RGBA * col)
{
RGBA dummy;
- if(!col);
+ if(!col)
col = &dummy;
col->r = swf_GetU8(t);
col->g = swf_GetU8(t);
{
GRADIENT dummy;
int t;
+ if(!tag) {
+ memset(gradient, 0, sizeof(GRADIENT));
+ return;
+ }
if(!gradient)
gradient = &dummy;
gradient->num = swf_GetU8(tag);
}
}
+void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
+{
+ int t;
+ if(!tag) {
+ memset(gradient, 0, sizeof(GRADIENT));
+ return;
+ }
+ swf_SetU8(tag, gradient->num);
+ for(t=0; t<8 && t<gradient->num; t++)
+ {
+ swf_SetU8(tag, gradient->ratios[t]);
+ if(!alpha)
+ swf_SetRGB(tag, &gradient->rgba[t]);
+ else
+ swf_SetRGBA(tag, &gradient->rgba[t]);
+ }
+}
+
int swf_CountUBits(U32 v,int nbits)
{ int n = 32;
U32 m = 0x80000000;
{
if((add->xmin | add->ymin | add->xmax | add->ymax)==0)
return;
+ if((src->xmin | src->ymin | src->xmax | src->ymax)==0)
+ *src = *add;
if(add->xmin < src->xmin)
src->xmin = add->xmin;
if(add->ymin < src->ymin)
return 0;
}
-int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
-int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
+//int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
+//int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
-// Tag List Manipulating Functions
+void swf_SetPassword(TAG * t, const char * password)
+{
+ /* WARNING: crypt_md5 is not reentrant */
+ char salt[3];
+ char* md5string;
+
+#if defined(HAVE_LRAND48) && defined(HAVE_SRAND48) && defined(HAVE_TIME_H) && defined(HAVE_TIME)
+ srand48(time(0));
+ salt[0] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
+ salt[1] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
+#else
+ salt[0] = 'l';
+ salt[1] = '8';
+ fprintf(stderr, "rfxswf: Warning- no usable random generator found\n");
+ fprintf(stderr, "Your password will be vulnerable to dictionary attacks\n");
+#endif
+
+ md5string = crypt_md5(password, salt);
-int swf_UpdateFrame(TAG * t,S8 delta)
-// returns number of frames
-{ int res = -1;
- while (t)
- { t->frame+=delta;
- res = t->frame;
- t = t->next;
- }
- return res;
+ swf_SetU16(t,0);
+ swf_SetString(t, md5string);
+}
+
+int swf_VerifyPassword(TAG * t, const char * password)
+{
+ char*md5string1, *md5string2;
+ char*x;
+ char*md5, *salt;
+ int n;
+
+ if(t->len >= 5 && t->pos==0 &&
+ t->data[0] == 0 &&
+ t->data[1] == 0) {
+ swf_GetU16(t);
+ } else {
+ printf("%d %d %d %d\n", t->len, t->pos, t->data[0], t->data[1]);
+ }
+
+ md5string1 = swf_GetString(t);
+
+ if(strncmp(md5string1, "$1$",3 )) {
+ fprintf(stderr, "rfxswf: no salt in pw string\n");
+ return 0;
+ }
+ x = strchr(md5string1+3, '$');
+ if(!x) {
+ fprintf(stderr, "rfxswf: invalid salt format in pw string\n");
+ return 0;
+ }
+ n = x-(md5string1+3);
+ salt = (char*)malloc(n+1);
+ memcpy(salt, md5string1+3, n);
+ salt[n] = 0;
+
+ md5string2 = crypt_md5(password, salt);
+ free(salt);
+ if(strcmp(md5string1, md5string2) != 0)
+ return 0;
+ return 1;
}
-TAG * swf_InsertTag(TAG * after,U16 id) // updates frames, if nescessary
+// Tag List Manipulating Functions
+
+TAG * swf_InsertTag(TAG * after,U16 id)
{ TAG * t;
t = (TAG *)malloc(sizeof(TAG));
t->id = id;
if (after)
- { t->frame = after->frame;
+ {
t->prev = after;
t->next = after->next;
after->next = t;
if (t->next) t->next->prev = t;
-
- if (id==ST_SHOWFRAME) swf_UpdateFrame(t->next,+1);
}
}
return t;
}
-TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id) // updates frames, if nescessary
+TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)
{ TAG * t;
t = (TAG *)malloc(sizeof(TAG));
t->id = id;
if (before)
- { t->frame = before->frame;
+ {
t->next = before;
t->prev = before->prev;
before->prev = t;
if (t->prev) t->prev->next = t;
-
- if (id==ST_SHOWFRAME) swf_UpdateFrame(t->next,+1);
}
}
if(swf && swf->firstTag == before) {
int swf_DeleteTag(TAG * t)
{ if (!t) return -1;
- if (t->id==ST_SHOWFRAME) swf_UpdateFrame(t->next,-1);
-
if (t->prev) t->prev->next = t->next;
if (t->next) t->next->prev = t->prev;
}
if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
- // Sprite handling fix: Flaten sprite tree
+ // Sprite handling fix: Flatten sprite tree
t = (TAG *)malloc(sizeof(TAG));
}
if (prev)
- { t->frame = prev->frame+((prev->id==ST_SHOWFRAME)?1:0);
+ {
t->prev = prev;
prev->next = t;
}
len = (t->id==ST_DEFINESPRITE)?swf_DefineSprite_GetRealSize(t):t->len;
- short_tag = len<0x3f;
+ short_tag = len<0x3f&&(t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2);
if (writer)
{ if (short_tag)
int swf_WriteTag(int handle, TAG * t)
{
struct writer_t writer;
+ int len = 0;
if(handle<0)
return swf_WriteTag2(0, t);
writer_init_filewriter(&writer, handle);
- return swf_WriteTag2(&writer, t);
+ len = swf_WriteTag2(&writer, t);
+ writer.finish(&writer);
+ return len;
}
int swf_DefineSprite_GetRealSize(TAG * t)
do
{
- if(t->len<0x3f) {
+ if(t->len<0x3f&&t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2) {
swf_SetU16(sprtag,t->len|(t->id<<6));
} else {
swf_SetU16(sprtag,0x3f|(t->id<<6));
void swf_FoldAll(SWF*swf)
{
TAG*tag = swf->firstTag;
+ //swf_DumpSWF(stdout, swf);
while(tag) {
- if(tag->id == ST_DEFINESPRITE)
+ if(tag->id == ST_DEFINESPRITE) {
swf_FoldSprite(tag);
+ //swf_DumpSWF(stdout, swf);
+ }
tag = swf_NextTag(tag);
}
}
int frameCount=0;
struct writer_t zwriter;
int fileSize = 0;
+ int inSprite = 0;
+ int writer_lastpos = 0;
+ int ret;
if (!swf) return -1;
+ if (!writer) return -1; // the caller should provide a nullwriter, not 0, for querying SWF size
+
+ if(writer) writer_lastpos = writer->pos;
// Insert REFLEX Tag
if (swf->firstTag && swf_NextTag(swf->firstTag))
if (swf_GetTagID(swf_NextTag(swf->firstTag))!=ST_REFLEX)
- swf_SetBlock(swf_InsertTag(swf->firstTag,ST_REFLEX),"rfx",3);
+ swf_SetBlock(swf_InsertTagBefore(swf, swf->firstTag,ST_REFLEX),"rfx",3);
#endif // INSERT_RFX_TAG
t = swf->firstTag;
frameCount = 0;
- while(t)
- { len += swf_WriteTag(-1, t);
- if (t->id==ST_SHOWFRAME) frameCount++;
- t = swf_NextTag(t);
+ while(t) {
+ len += swf_WriteTag(-1,t);
+ if(t->id == ST_DEFINESPRITE) inSprite++;
+ else if(t->id == ST_END && inSprite) inSprite--;
+ else if(t->id == ST_SHOWFRAME && !inSprite) frameCount++;
+ t = swf_NextTag(t);
}
{ TAG t1;
if(swf->compressed != 8) {
/* compressed flag set to 8 means "skip first 8
header bytes". This is necessary if the caller wants to
- create compressed SWFs himself */
+ create compressed SWFs himself .
+ It also means that we don't initialize our own zlib
+ writer, but assume the caller provided one.
+ */
if(swf->compressed) {
char*id = "CWS";
writer->write(writer, id, 3);
swf_SetU16(&t1,swf->frameRate);
swf_SetU16(&t1,swf->frameCount);
- if (writer)
- {
- int ret = writer->write(writer,b,swf_GetTagLen(&t1));
- if (ret!=swf_GetTagLen(&t1))
- {
- #ifdef DEBUG_RFXSWF
- fprintf(stderr, "ret:%d\n",ret);
- perror("write:");
- fprintf(stderr,"WriteSWF() failed: Header.\n");
- #endif
- return -1;
- }
+ ret = writer->write(writer,b,swf_GetTagLen(&t1));
+ if (ret!=swf_GetTagLen(&t1))
+ {
+ #ifdef DEBUG_RFXSWF
+ fprintf(stderr, "ret:%d\n",ret);
+ perror("write:");
+ fprintf(stderr,"WriteSWF() failed: Header.\n");
+ #endif
+ return -1;
+ }
- t = swf->firstTag;
- while (t)
- { if (swf_WriteTag2(writer, t)<0) return -1;
- t = swf_NextTag(t);
+ t = swf->firstTag;
+ while (t)
+ { if (swf_WriteTag2(writer, t)<0) return -1;
+ t = swf_NextTag(t);
+ }
+ if(swf->compressed) {
+ if(swf->compressed != 8) {
+ zwriter.finish(&zwriter);
+ return writer->pos - writer_lastpos;
}
- if(swf->compressed != 8)
- writer->finish(writer); // flush zlib buffers - only if _we_ initialized that writer.
+ return (int)fileSize;
+ } else {
+ return (int)fileSize;
}
}
- return (int)fileSize;
}
int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
{
struct writer_t writer;
+ int len = 0;
swf->compressed = 0;
- if(handle<0)
- return swf_WriteSWF2(&writer, swf);
+
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
+ len = swf_WriteSWF2(&writer, swf);
+ }
writer_init_filewriter(&writer, handle);
- return swf_WriteSWF2(&writer, swf);
+ len = swf_WriteSWF2(&writer, swf);
+ writer.finish(&writer);
+ return len;
}
int swf_WriteSWC(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
{
struct writer_t writer;
+ int len = 0;
swf->compressed = 1;
- if(handle<0)
- return swf_WriteSWF2(&writer, swf);
+
+ if(handle<0) {
+ writer_init_nullwriter(&writer);
+ len = swf_WriteSWF2(&writer, swf);
+ }
writer_init_filewriter(&writer, handle);
- return swf_WriteSWF2(&writer, swf);
+ len = swf_WriteSWF2(&writer, swf);
+ writer.finish(&writer);
+ return len;
}
int swf_WriteHeader2(struct writer_t*writer,SWF * swf)
free(t);
t = tnew;
}
+ swf->firstTag = 0;
}
// include advanced functions
#include "modules/swfdump.c"
#include "modules/swfshape.c"
#include "modules/swftext.c"
+#include "modules/swffont.c"
#include "modules/swfobject.c"
#include "modules/swfbutton.c"
#include "modules/swftools.c"
#include "modules/swfbits.c"
#include "modules/swfaction.c"
#include "modules/swfsound.c"
-#include "h.263/swfvideo.c"
+#include "modules/swfdraw.c"