1 /* vi: set sts=2 sw=2 :*/
4 Library for creating and reading SWF files or parts of it.
5 There's a module directory which provides some extended functionality.
6 Most modules are included at the bottom of this file.
8 Part of the swftools package.
10 Copyright (c) 2000-2003 Rainer Böhme <rfxswf@reflex-studio.de>
11 Copyright (c) 2003 Matthias Kramm <kramm@quiss.org>
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
33 #ifndef RFXSWF_DISABLESOUND
35 #include "lame/lame.h"
53 #define MALLOC_SIZE 128
54 #define INSERT_RFX_TAG
56 #define MEMSIZE(l) (((l/MALLOC_SIZE)+1)*MALLOC_SIZE)
58 // inline wrapper functions
60 TAG * swf_NextTag(TAG * t) { return t->next; }
61 TAG * swf_PrevTag(TAG * t) { return t->prev; }
62 U16 swf_GetTagID(TAG * t) { return t->id; }
63 U32 swf_GetTagLen(TAG * t) { return t->len; }
64 U8* swf_GetTagLenPtr(TAG * t) { return &(t->data[t->len]); }
65 U32 swf_GetTagPos(TAG * t) { return t->pos; }
67 void swf_SetTagPos(TAG * t,U32 pos)
68 { swf_ResetReadBits(t);
69 if (pos<=t->len) t->pos = pos;
72 fprintf(stderr,"SetTagPos(%d) out of bounds: TagID = %i\n",pos, t->id);
77 char* swf_GetString(TAG*t)
80 while(t->pos < t->len && swf_GetU8(t));
81 /* make sure we always have a trailing zero byte */
82 if(t->pos == t->len) {
83 if(t->len == t->memsize) {
84 swf_ResetWriteBits(t);
90 return (char*)&(t->data[pos]);
94 { swf_ResetReadBits(t);
97 { fprintf(stderr,"GetU8() out of bounds: TagID = %i\n",t->id);
101 return t->data[t->pos++];
104 U16 swf_GetU16(TAG * t)
106 swf_ResetReadBits(t);
108 if (t->pos>(t->len-2))
109 { fprintf(stderr,"GetU16() out of bounds: TagID = %i\n",t->id);
113 res = t->data[t->pos] | (t->data[t->pos+1]<<8);
118 U32 swf_GetU32(TAG * t)
120 swf_ResetReadBits(t);
122 if (t->pos>(t->len-4))
123 { fprintf(stderr,"GetU32() out of bounds: TagID = %i\n",t->id);
127 res = t->data[t->pos] | (t->data[t->pos+1]<<8) |
128 (t->data[t->pos+2]<<16) | (t->data[t->pos+3]<<24);
133 int swf_GetBlock(TAG * t,U8 * b,int l)
134 // returns number of bytes written (<=l)
135 // b = NULL -> skip data
136 { swf_ResetReadBits(t);
137 if ((t->len-t->pos)<l) l=t->len-t->pos;
138 if (b && l) memcpy(b,&t->data[t->pos],l);
143 int swf_SetBlock(TAG * t,const U8 * b,int l)
144 // Appends Block to the end of Tagdata, returns size
145 { U32 newlen = t->len + l;
146 swf_ResetWriteBits(t);
147 if (newlen>t->memsize)
148 { U32 newmem = MEMSIZE(newlen);
149 U8 * newdata = (U8*)(rfx_realloc(t->data,newmem));
153 if (b) memcpy(&t->data[t->len],b,l);
154 else memset(&t->data[t->len],0x00,l);
159 int swf_SetU8(TAG * t,U8 v)
160 { swf_ResetWriteBits(t);
161 if ((t->len+1)>t->memsize) return (swf_SetBlock(t,&v,1)==1)?0:-1;
162 t->data[t->len++] = v;
166 int swf_SetU16(TAG * t,U16 v)
171 swf_ResetWriteBits(t);
172 if ((t->len+2)>t->memsize) return (swf_SetBlock(t,a,2)==2)?0:-1;
173 t->data[t->len++] = a[0];
174 t->data[t->len++] = a[1];
177 void swf_SetS16(TAG * t,int v)
179 if(v>32767 || v<-32768) {
180 fprintf(stderr, "Warning: S16 overflow: %d\n", v);
182 swf_SetU16(t, (S16)v);
185 int swf_SetU32(TAG * t,U32 v)
187 a[0] = v&0xff; // to ensure correct handling of non-intel byteorder
192 swf_ResetWriteBits(t);
193 if ((t->len+4)>t->memsize) return (swf_SetBlock(t,a,4)==4)?0:-1;
194 t->data[t->len++] = a[0];
195 t->data[t->len++] = a[1];
196 t->data[t->len++] = a[2];
197 t->data[t->len++] = a[3];
201 U32 swf_GetBits(TAG * t,int nbits)
203 if (!nbits) return 0;
204 if (!t->readBit) t->readBit = 0x80;
209 { fprintf(stderr,"GetBits() out of bounds: TagID = %i, pos=%d, len=%d\n",t->id, t->pos, t->len);
210 int i,m=t->len>10?10:t->len;
212 fprintf(stderr, "(%d)%02x ", i, t->data[i]);
214 fprintf(stderr, "\n");
218 if (t->data[t->pos]&t->readBit) res|=1;
222 { if (nbits) t->readBit = 0x80;
229 S32 swf_GetSBits(TAG * t,int nbits)
230 { U32 res = swf_GetBits(t,nbits);
231 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
235 U32 reader_GetBits(reader_t*reader, int nbits)
236 { return reader_readbits(reader, nbits);
238 S32 reader_GetSBits(reader_t*reader, int nbits)
239 { U32 res = reader_readbits(reader, nbits);
240 if (res&(1<<(nbits-1))) res|=(0xffffffff<<nbits);
244 int swf_SetBits(TAG * t,U32 v,int nbits)
245 { U32 bm = 1<<(nbits-1);
249 { if (FAILED(swf_SetU8(t,0))) return -1;
252 if (v&bm) t->data[t->len-1] |= t->writeBit;
260 // Advanced Data Access Functions
262 double swf_GetFixed(TAG * t)
264 U16 low = swf_GetU16(t);
265 U16 high = swf_GetU16(t);
266 return high + low*(1/65536.0);
268 void swf_SetFixed(TAG * t, double f)
270 U16 fr = (U16)((f-(int)f)*65536);
272 swf_SetU16(t, (U16)f - (f<0 && fr!=0));
274 float swf_GetFixed8(TAG * t)
276 U8 low = swf_GetU8(t);
277 U8 high = swf_GetU8(t);
278 return (float)(high + low*(1/256.0));
280 void swf_SetFixed8(TAG * t, float f)
282 U8 fr = (U8)((f-(int)f)*256);
284 swf_SetU8(t, (U8)f - (f<0 && fr!=0));
287 U32 swf_GetU30(TAG*tag)
293 U8 b = swf_GetU8(tag);
297 if(!(b&128) || shift>=32)
300 /*int nr2= swf_SetU30(0, s);
302 printf("Unsigned value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
307 int swf_SetU30(TAG*tag, U32 u)
312 swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
319 void swf_SetABCU32(TAG*tag, U32 u)
322 swf_SetU8(tag, (u&~0x7f?0x80:0) | (u&0x7F));
326 U32 swf_GetABCU32(TAG*tag)
328 return swf_GetU30(tag);
330 void swf_SetABCS32(TAG*tag, S32 v)
332 swf_SetABCU32(tag, v);
334 S32 swf_GetABCS32(TAG*tag)
336 return swf_GetABCU32(tag);
341 /*The AVM2 spec is just plain wrong, claiming that S32 values are sign
342 extended. They're not.
343 This wastes up to 4 bytes for every negative value. */
345 void swf_SetABCS32(TAG*tag, S32 s)
347 printf("write S32: %d\n", s);
349 U8 sign = s<0?0x40:0;
355 if(s==neg && vsign==sign) {
356 /* if the value we now write has the same sign as s
357 and all the remaining bits are equal to the sign of s
360 printf("put %02x\n", val);
363 swf_SetU8(tag, 0x80 | val);
364 printf("put %02x\n", 0x80|val);
368 int swf_GetS30(TAG*tag)
374 U8 b = swf_GetU8(tag);
376 nt i,m=t->len>10?10:t->len;
378 fprintf(stderr, "%02x ", t->data[i]);
380 fprintf(stderr, "\n");
383 if(!(b&128) || shift>=32) {
386 s|=0xffffffff<<shift;
391 /* It's not uncommon for other applications (Flex for all negative numbers, and
392 Flash for -1) to generate a lot more bytes than would be necessary.
393 int nr2= swf_SetS30(0, s);
395 printf("Signed value %d stored in %d bytes, I'd store it in %d bytes\n", s, nr, nr2);
401 int swf_SetU30String(TAG*tag, const char*str, int l)
404 len+=swf_SetU30(tag, l);
406 swf_SetBlock(tag, (void*)str, l);
409 double swf_GetD64(TAG*tag)
411 /* FIXME: this is not big-endian compatible */
412 double value = *(double*)&tag->data[tag->pos];
417 int swf_SetD64(TAG*tag, double v)
419 /* FIXME: this is not big-endian compatible */
420 swf_SetU32(tag, ((U32*)&v)[0]);
421 swf_SetU32(tag, ((U32*)&v)[1]);
424 int swf_GetU24(TAG*tag)
426 int b1 = swf_GetU8(tag);
427 int b2 = swf_GetU8(tag);
428 int b3 = swf_GetU8(tag);
429 return b3<<16|b2<<8|b1;
431 int swf_GetS24(TAG*tag)
433 int b1 = swf_GetU8(tag);
434 int b2 = swf_GetU8(tag);
435 int b3 = swf_GetU8(tag);
437 return -1-((b3<<16|b2<<8|b1)^0xffffff);
439 return b3<<16|b2<<8|b1;
442 int swf_SetU24(TAG*tag, U32 v)
446 fprintf(stderr, "Error: Overflow in swf_SetU24()\n");
448 swf_SetU8(tag, v>>8);
449 swf_SetU8(tag, v>>16);
453 int swf_SetS24(TAG*tag, U32 v)
457 return swf_SetU24(tag, v);
458 if((v&0xff000000)!=0xff000000) {
459 fprintf(stderr, "Error: Overflow in swf_SetS24()\n");
462 swf_SetU8(tag, v>>8);
463 swf_SetU8(tag, v>>16);
469 int swf_SetRGB(TAG * t,RGBA * col)
472 { swf_SetU8(t,col->r);
475 } else swf_SetBlock(t,NULL,3);
478 void swf_GetRGB(TAG * t, RGBA * col)
483 col->r = swf_GetU8(t);
484 col->g = swf_GetU8(t);
485 col->b = swf_GetU8(t);
489 int swf_SetRGBA(TAG * t,RGBA * col)
492 { swf_SetU8(t,col->r);
496 } else swf_SetBlock(t,NULL,4);
499 void swf_GetRGBA(TAG * t, RGBA * col)
504 col->r = swf_GetU8(t);
505 col->g = swf_GetU8(t);
506 col->b = swf_GetU8(t);
507 col->a = swf_GetU8(t);
510 void swf_GetGradient(TAG * tag, GRADIENT * gradient, char alpha)
514 memset(gradient, 0, sizeof(GRADIENT));
517 U8 num = swf_GetU8(tag) & 15;
520 gradient->rgba = (RGBA*)rfx_calloc(sizeof(RGBA)*gradient->num);
521 gradient->ratios = (U8*)rfx_calloc(sizeof(gradient->ratios[0])*gradient->num);
525 U8 ratio = swf_GetU8(tag);
528 swf_GetRGB(tag, &color);
530 swf_GetRGBA(tag, &color);
532 gradient->ratios[t] = ratio;
533 gradient->rgba[t] = color;
538 void swf_SetGradient(TAG * tag, GRADIENT * gradient, char alpha)
542 memset(gradient, 0, sizeof(GRADIENT));
545 swf_SetU8(tag, gradient->num);
546 for(t=0; t<8 && t<gradient->num; t++)
548 swf_SetU8(tag, gradient->ratios[t]);
550 swf_SetRGB(tag, &gradient->rgba[t]);
552 swf_SetRGBA(tag, &gradient->rgba[t]);
556 void swf_FreeGradient(GRADIENT* gradient)
559 rfx_free(gradient->ratios);
561 rfx_free(gradient->rgba);
562 memset(gradient, 0, sizeof(GRADIENT));
565 int swf_CountUBits(U32 v,int nbits)
568 if(v == 0x00000000) n = 0;
574 return (n>nbits)?n:nbits;
577 int swf_CountBits(U32 v,int nbits)
581 { if(v == 0xffffffff) n = 1;
589 { if(v == 0x00000000) n = 0;
596 return (n>nbits)?n:nbits;
599 int swf_GetRect(TAG * t,SRECT * r)
602 if(!t) {r->xmin=r->xmax=r->ymin=r->ymax=0;return 0;}
604 nbits = (int) swf_GetBits(t,5);
605 r->xmin = swf_GetSBits(t,nbits);
606 r->xmax = swf_GetSBits(t,nbits);
607 r->ymin = swf_GetSBits(t,nbits);
608 r->ymax = swf_GetSBits(t,nbits);
612 int reader_GetRect(reader_t*reader,SRECT * r)
616 nbits = (int) reader_GetBits(reader,5);
617 r->xmin = reader_GetSBits(reader,nbits);
618 r->xmax = reader_GetSBits(reader,nbits);
619 r->ymin = reader_GetSBits(reader,nbits);
620 r->ymax = reader_GetSBits(reader,nbits);
624 int swf_SetRect(TAG * t,SRECT * r)
627 nbits = swf_CountBits(r->xmin,0);
628 nbits = swf_CountBits(r->xmax,nbits);
629 nbits = swf_CountBits(r->ymin,nbits);
630 nbits = swf_CountBits(r->ymax,nbits);
632 fprintf(stderr, "rfxswf: Warning: num_bits overflow in swf_SetRect\n");
636 swf_SetBits(t,nbits,5);
637 swf_SetBits(t,r->xmin,nbits);
638 swf_SetBits(t,r->xmax,nbits);
639 swf_SetBits(t,r->ymin,nbits);
640 swf_SetBits(t,r->ymax,nbits);
645 SRECT swf_ClipRect(SRECT border, SRECT r)
647 if(r.xmax > border.xmax) r.xmax = border.xmax;
648 if(r.ymax > border.ymax) r.ymax = border.ymax;
649 if(r.xmax < border.xmin) r.xmax = border.xmin;
650 if(r.ymax < border.ymin) r.ymax = border.ymin;
652 if(r.xmin > border.xmax) r.xmin = border.xmax;
653 if(r.ymin > border.ymax) r.ymin = border.ymax;
654 if(r.xmin < border.xmin) r.xmin = border.xmin;
655 if(r.ymin < border.ymin) r.ymin = border.ymin;
659 void swf_ExpandRect(SRECT*src, SPOINT add)
661 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
666 if((add.x|add.y) == 0) src->xmax++; //make sure the bbox is not NULL anymore
669 if(add.x < src->xmin)
671 if(add.x > src->xmax)
673 if(add.y < src->ymin)
675 if(add.y > src->ymax)
678 void swf_ExpandRect2(SRECT*src, SRECT*add)
680 if((add->xmin | add->ymin | add->xmax | add->ymax)==0)
682 if((src->xmin | src->ymin | src->xmax | src->ymax)==0)
684 if(add->xmin < src->xmin)
685 src->xmin = add->xmin;
686 if(add->ymin < src->ymin)
687 src->ymin = add->ymin;
688 if(add->xmax > src->xmax)
689 src->xmax = add->xmax;
690 if(add->ymax > src->ymax)
691 src->ymax = add->ymax;
693 void swf_ExpandRect3(SRECT*src, SPOINT center, int radius)
695 if((src->xmin | src->ymin | src->xmax | src->ymax)==0) {
696 src->xmin = center.x-radius;
697 src->ymin = center.y-radius;
698 src->xmax = center.x+radius;
699 src->ymax = center.y+radius;
700 if((center.x|center.y|radius) == 0) src->xmax++; //make sure the bbox is not NULL anymore
703 if(center.x - radius < src->xmin)
704 src->xmin = center.x - radius;
705 if(center.x + radius > src->xmax)
706 src->xmax = center.x + radius;
707 if(center.y - radius < src->ymin)
708 src->ymin = center.y - radius;
709 if(center.y + radius > src->ymax)
710 src->ymax = center.y + radius;
712 SPOINT swf_TurnPoint(SPOINT p, MATRIX* m)
715 r.x = (int)(m->sx*(1/65536.0)*p.x + m->r1*(1/65536.0)*p.y + 0.5) + m->tx;
716 r.y = (int)(m->r0*(1/65536.0)*p.x + m->sy*(1/65536.0)*p.y + 0.5) + m->ty;
719 SRECT swf_TurnRect(SRECT r, MATRIX* m)
722 SPOINT p1,p2,p3,p4,pp1,pp2,pp3,pp4;
725 p1.x = r.xmin;p1.y = r.ymin;
726 p2.x = r.xmax;p2.y = r.ymin;
727 p3.x = r.xmin;p3.y = r.ymax;
728 p4.x = r.xmax;p4.y = r.ymax;
729 pp1 = swf_TurnPoint(p1, m);
730 pp2 = swf_TurnPoint(p2, m);
731 pp3 = swf_TurnPoint(p3, m);
732 pp4 = swf_TurnPoint(p4, m);
733 g.xmin = g.xmax = pp1.x;
734 g.ymin = g.ymax = pp1.y;
735 swf_ExpandRect(&g, pp2);
736 swf_ExpandRect(&g, pp3);
737 swf_ExpandRect(&g, pp4);
742 int swf_GetMatrix(TAG * t,MATRIX * m)
749 { m->sx = m->sy = 0x10000;
755 swf_ResetReadBits(t);
757 if (swf_GetBits(t,1))
758 { nbits = swf_GetBits(t,5);
759 m->sx = swf_GetSBits(t,nbits);
760 m->sy = swf_GetSBits(t,nbits);
762 else m->sx = m->sy = 0x10000;
764 if (swf_GetBits(t,1))
765 { nbits = swf_GetBits(t,5);
766 m->r0 = swf_GetSBits(t,nbits);
767 m->r1 = swf_GetSBits(t,nbits);
769 else m->r0 = m->r1 = 0x0;
771 nbits = swf_GetBits(t,5);
772 m->tx = swf_GetSBits(t,nbits);
773 m->ty = swf_GetSBits(t,nbits);
778 int swf_SetMatrix(TAG * t,MATRIX * m)
784 ma.sx = ma.sy = 0x10000;
789 swf_ResetWriteBits(t);
791 if ((m->sx==0x10000)&&(m->sy==0x10000)) swf_SetBits(t,0,1);
793 { swf_SetBits(t,1,1);
794 nbits = swf_CountBits(m->sx,0);
795 nbits = swf_CountBits(m->sy,nbits);
797 /* TODO: happens on AMD64 systems for normal values? */
798 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
801 swf_SetBits(t,nbits,5);
802 swf_SetBits(t,m->sx,nbits);
803 swf_SetBits(t,m->sy,nbits);
806 if ((!m->r0)&&(!m->r1)) swf_SetBits(t,0,1);
808 { swf_SetBits(t,1,1);
809 nbits = swf_CountBits(m->r0,0);
810 nbits = swf_CountBits(m->r1,nbits);
812 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
815 swf_SetBits(t,nbits,5);
816 swf_SetBits(t,m->r0,nbits);
817 swf_SetBits(t,m->r1,nbits);
820 nbits = swf_CountBits(m->tx,0);
821 nbits = swf_CountBits(m->ty,nbits);
823 fprintf(stderr,"rfxswf: Error: matrix values too large\n");
826 swf_SetBits(t,nbits,5);
827 swf_SetBits(t,m->tx,nbits);
828 swf_SetBits(t,m->ty,nbits);
833 int swf_GetCXForm(TAG * t,CXFORM * cx,U8 alpha)
841 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
842 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
846 swf_ResetReadBits(t);
847 hasadd = swf_GetBits(t,1);
848 hasmul = swf_GetBits(t,1);
849 nbits = swf_GetBits(t,4);
852 { cx->r0 = (S16)swf_GetSBits(t,nbits);
853 cx->g0 = (S16)swf_GetSBits(t,nbits);
854 cx->b0 = (S16)swf_GetSBits(t,nbits);
856 cx->a0 = (S16)swf_GetSBits(t,nbits);
860 { cx->r1 = (S16)swf_GetSBits(t,nbits);
861 cx->g1 = (S16)swf_GetSBits(t,nbits);
862 cx->b1 = (S16)swf_GetSBits(t,nbits);
864 cx->a1 = (S16)swf_GetSBits(t,nbits);
870 int swf_SetCXForm(TAG * t,CXFORM * cx,U8 alpha)
878 cx->a0 = cx->r0 = cx->g0 = cx->b0 = 256;
879 cx->a1 = cx->r1 = cx->g1 = cx->b1 = 0;
889 hasmul = (cx->a0!=256)||(cx->r0!=256)||(cx->g0!=256)||(cx->b0!=256);
890 hasadd = cx->a1|cx->r1|cx->g1|cx->b1;
893 { if (alpha) nbits = swf_CountBits((S32)cx->a0,nbits);
894 nbits = swf_CountBits((S32)cx->r0,nbits);
895 nbits = swf_CountBits((S32)cx->g0,nbits);
896 nbits = swf_CountBits((S32)cx->b0,nbits);
900 { if (alpha) nbits = swf_CountBits((S32)cx->a1,nbits);
901 nbits = swf_CountBits((S32)cx->r1,nbits);
902 nbits = swf_CountBits((S32)cx->g1,nbits);
903 nbits = swf_CountBits((S32)cx->b1,nbits);
906 swf_ResetWriteBits(t);
907 swf_SetBits(t,hasadd?1:0,1);
908 swf_SetBits(t,hasmul?1:0,1);
909 swf_SetBits(t,nbits,4);
912 { swf_SetBits(t,cx->r0,nbits);
913 swf_SetBits(t,cx->g0,nbits);
914 swf_SetBits(t,cx->b0,nbits);
915 if (alpha) swf_SetBits(t,cx->a0,nbits);
919 { swf_SetBits(t,cx->r1,nbits);
920 swf_SetBits(t,cx->g1,nbits);
921 swf_SetBits(t,cx->b1,nbits);
922 if (alpha) swf_SetBits(t,cx->a1,nbits);
928 //int swf_GetPoint(TAG * t,SPOINT * p) { return 0; }
929 //int swf_SetPoint(TAG * t,SPOINT * p) { return 0; }
931 void swf_SetPassword(TAG * t, const char * password)
933 /* WARNING: crypt_md5 is not reentrant */
937 #if defined(HAVE_LRAND48) && defined(HAVE_SRAND48) && defined(HAVE_TIME_H) && defined(HAVE_TIME)
939 salt[0] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
940 salt[1] = "abcdefghijklmnopqrstuvwxyz0123456789"[lrand48()%36];
944 fprintf(stderr, "rfxswf: Warning- no usable random generator found\n");
945 fprintf(stderr, "Your password will be vulnerable to dictionary attacks\n");
949 md5string = crypt_md5(password, salt);
952 swf_SetString(t, (U8*)md5string);
955 void swf_SetString(TAG*t, const char* s)
960 swf_SetBlock(t,s,strlen(s)+1);
964 int swf_VerifyPassword(TAG * t, const char * password)
966 char*md5string1, *md5string2;
971 if(t->len >= 5 && t->pos==0 &&
976 printf("%d %d %d %d\n", t->len, t->pos, t->data[0], t->data[1]);
979 md5string1 = swf_GetString(t);
981 if(strncmp(md5string1, "$1$",3 )) {
982 fprintf(stderr, "rfxswf: no salt in pw string\n");
985 x = strchr(md5string1+3, '$');
987 fprintf(stderr, "rfxswf: invalid salt format in pw string\n");
990 n = x-(md5string1+3);
991 salt = (char*)rfx_alloc(n+1);
992 memcpy(salt, md5string1+3, n);
995 md5string2 = crypt_md5(password, salt);
997 if(strcmp(md5string1, md5string2) != 0)
1002 // Tag List Manipulating Functions
1004 TAG * swf_InsertTag(TAG * after,U16 id)
1007 t = (TAG *)rfx_calloc(sizeof(TAG));
1013 t->next = after->next;
1015 if (t->next) t->next->prev = t;
1020 TAG * swf_InsertTagBefore(SWF* swf, TAG * before,U16 id)
1023 t = (TAG *)rfx_calloc(sizeof(TAG));
1029 t->prev = before->prev;
1031 if (t->prev) t->prev->next = t;
1033 if(swf && swf->firstTag == before) {
1039 void swf_ClearTag(TAG * t)
1041 if (t->data) rfx_free(t->data);
1050 void swf_ResetTag(TAG*tag, U16 id)
1052 tag->len = tag->pos = tag->readBit = tag->writeBit = 0;
1056 TAG* swf_CopyTag(TAG*tag, TAG*to_copy)
1058 tag = swf_InsertTag(tag, to_copy->id);
1059 swf_SetBlock(tag, to_copy->data, to_copy->len);
1063 TAG* swf_DeleteTag(SWF*swf, TAG * t)
1067 if (swf && swf->firstTag==t)
1068 swf->firstTag = t->next;
1069 if (t->prev) t->prev->next = t->next;
1070 if (t->next) t->next->prev = t->prev;
1072 if (t->data) rfx_free(t->data);
1077 TAG * swf_ReadTag(reader_t*reader, TAG * prev)
1083 if (reader->read(reader, &raw, 2) !=2 ) return NULL;
1091 if (reader->read(reader, &len, 4) != 4) return NULL;
1095 if (id==ST_DEFINESPRITE) len = 2*sizeof(U16);
1096 // Sprite handling fix: Flatten sprite tree
1098 t = (TAG *)rfx_calloc(sizeof(TAG));
1104 { t->data = (U8*)rfx_alloc(t->len);
1105 t->memsize = t->len;
1106 if (reader->read(reader, t->data, t->len) != t->len) {
1107 fprintf(stderr, "rfxswf: Warning: Short read (tagid %d). File truncated?\n", t->id);
1108 free(t->data);t->data=0;
1123 int swf_DefineSprite_GetRealSize(TAG * t);
1125 int swf_WriteTag2(writer_t*writer, TAG * t)
1126 // returns tag length in bytes (incl. Header), -1 = Error
1127 // writer = 0 -> no output
1134 len = (t->id==ST_DEFINESPRITE)?swf_DefineSprite_GetRealSize(t):t->len;
1136 short_tag = len<0x3f&&
1137 (t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
1138 t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3);
1143 int oldpos = writer->pos;
1147 { raw[0] = SWAP16(len|((t->id&0x3ff)<<6));
1148 if (writer->write(writer,raw,2)!=2)
1151 fprintf(stderr,"WriteTag() failed: Short Header.\n");
1158 raw[0] = SWAP16((t->id<<6)|0x3f);
1159 if (writer->write(writer,raw,2)!=2)
1162 fprintf(stderr,"WriteTag() failed: Long Header (1).\n");
1168 if (writer->write(writer,&len,4)!=4)
1171 fprintf(stderr,"WriteTag() failed: Long Header (2).\n");
1178 { if (writer->write(writer,t->data,t->len)!=t->len)
1181 fprintf(stderr,"WriteTag() failed: Data.\n");
1187 else if (t->len) fprintf(stderr,"WriteTag(): Tag Data Error, id=%i\n",t->id);
1191 writer->flush(writer);
1192 printf("TAG %s costs %d bytes\n", swf_TagGetName(t), writer->pos-oldpos);
1196 return t->len+(short_tag?2:6);
1199 int swf_WriteTag(int handle, TAG * t)
1204 return swf_WriteTag2(0, t);
1205 writer_init_filewriter(&writer, handle);
1206 len = swf_WriteTag2(&writer, t);
1207 writer.finish(&writer);
1211 int swf_DefineSprite_GetRealSize(TAG * t)
1212 // Sprite Handling: Helper function to pack DefineSprite-Tag
1214 if(len>4) { // folded sprite
1218 { t = swf_NextTag(t);
1219 if (t && t->id!=ST_DEFINESPRITE) len += swf_WriteTag(-1, t);
1221 } while (t&&(t->id!=ST_END));
1225 void swf_UnFoldSprite(TAG * t)
1230 U16 spriteid,spriteframes;
1232 if(t->id!=ST_DEFINESPRITE)
1234 if(t->len<=4) // not folded
1239 spriteid = swf_GetU16(t); //id
1240 spriteframes = swf_GetU16(t); //frames
1247 tmp = swf_GetU16(t);
1252 if(id == ST_DEFINESPRITE && len<=4)
1256 len = swf_GetU32(t);
1257 it = swf_InsertTag(next, id);
1262 { it->data = (U8*)rfx_alloc(it->len);
1263 it->memsize = it->len;
1264 swf_GetBlock(t, it->data, it->len);
1271 rfx_free(t->data); t->data = 0;
1272 t->memsize = t->len = t->pos = 0;
1274 swf_SetU16(t, spriteid);
1275 swf_SetU16(t, spriteframes);
1278 void swf_FoldSprite(TAG * t)
1283 if(t->id!=ST_DEFINESPRITE)
1286 fprintf(stderr, "Error: Sprite has no ID!");
1290 /* sprite is already folded */
1297 t->len = t->pos = t->memsize = 0;
1302 t = swf_NextTag(sprtag);
1307 if(t->id==ST_SHOWFRAME) frames++;
1308 if(t->id == ST_DEFINESPRITE && t->len<=4)
1313 } while(t && level);
1315 fprintf(stderr, "rfxswf error: sprite doesn't end(1)\n");
1317 swf_SetU16(sprtag, id);
1318 swf_SetU16(sprtag, frames);
1320 t = swf_NextTag(sprtag);
1326 (t->id!=ST_DEFINEBITSLOSSLESS&&t->id!=ST_DEFINEBITSLOSSLESS2&&t->id!=ST_SOUNDSTREAMBLOCK&&
1327 t->id!=ST_DEFINEBITSJPEG&&t->id!=ST_DEFINEBITSJPEG2&&t->id!=ST_DEFINEBITSJPEG3)
1329 swf_SetU16(sprtag,t->len|(t->id<<6));
1331 swf_SetU16(sprtag,0x3f|(t->id<<6));
1332 swf_SetU32(sprtag,t->len);
1335 swf_SetBlock(sprtag,t->data, t->len);
1337 if(t->id == ST_DEFINESPRITE && t->len<=4)
1342 swf_DeleteTag(0, tmp);
1346 fprintf(stderr, "rfxswf error: sprite doesn't end(2)\n");
1348 // sprtag->next = t;
1349 // t->prev = sprtag;
1352 int swf_IsFolded(TAG * t)
1354 return (t->id == ST_DEFINESPRITE && t->len>4);
1357 void swf_FoldAll(SWF*swf)
1359 TAG*tag = swf->firstTag;
1360 //swf_DumpSWF(stdout, swf);
1362 if(tag->id == ST_DEFINESPRITE) {
1363 swf_FoldSprite(tag);
1364 //swf_DumpSWF(stdout, swf);
1366 tag = swf_NextTag(tag);
1370 void swf_UnFoldAll(SWF*swf)
1372 TAG*tag = swf->firstTag;
1374 if(tag->id == ST_DEFINESPRITE)
1375 swf_UnFoldSprite(tag);
1380 void swf_OptimizeTagOrder(SWF*swf)
1387 /* at the moment, we don't actually do optimizing,
1388 only fixing of non-spec-conformant things like
1395 tag = swf->firstTag;
1398 if(tag->id == ST_DEFINESPRITE) {
1400 /* ??? all sprites are supposed to be unfolded */
1401 fprintf(stderr, "librfxswf error - internal error in OptimizeTagOrder/UnfoldAll\n");
1411 /* move non-sprite tags out of sprite */
1412 if(!swf_isAllowedSpriteTag(tag) || level>=2) {
1413 /* remove tag from current position */
1414 tag->prev->next = tag->next;
1416 tag->next->prev = tag->prev;
1418 /* insert before tag level0 */
1420 tag->prev = level0->prev;
1423 tag->prev->next = tag;
1425 swf->firstTag = tag;
1429 if(tag->id == ST_END) {
1440 int swf_ReadSWF2(reader_t*reader, SWF * swf) // Reads SWF to memory (malloc'ed), returns length or <0 if fails
1442 if (!swf) return -1;
1443 memset(swf,0x00,sizeof(SWF));
1445 { char b[32]; // read Header
1451 if ((len = reader->read(reader ,b,8))<8) return -1;
1453 if (b[0]!='F' && b[0]!='C') return -1;
1454 if (b[1]!='W') return -1;
1455 if (b[2]!='S') return -1;
1456 swf->fileVersion = b[3];
1457 swf->compressed = (b[0]=='C')?1:0;
1458 swf->fileSize = GET32(&b[4]);
1460 if(swf->compressed) {
1461 reader_init_zlibinflate(&zreader, reader);
1464 swf->compressed = 0; // derive from version number from now on
1466 reader_GetRect(reader, &swf->movieSize);
1467 reader->read(reader, &swf->frameRate, 2);
1468 swf->frameRate = SWAP16(swf->frameRate);
1469 reader->read(reader, &swf->frameCount, 2);
1470 swf->frameCount = SWAP16(swf->frameCount);
1472 /* read tags and connect to list */
1476 t = swf_ReadTag(reader,t);
1477 if(t && t->id == ST_FILEATTRIBUTES) {
1478 swf->fileAttributes = swf_GetU32(t);
1479 swf_ResetReadBits(t);
1482 swf->firstTag = t1.next;
1484 t1.next->prev = NULL;
1490 SWF* swf_OpenSWF(char*filename)
1492 int fi = open(filename, O_RDONLY|O_BINARY);
1494 fprintf(stderr, "Failed to open %s\n", filename);
1497 SWF* swf = rfx_alloc(sizeof(SWF));
1498 swf_ReadSWF(fi, swf);
1503 int swf_ReadSWF(int handle, SWF * swf)
1506 reader_init_filereader(&reader, handle);
1507 return swf_ReadSWF2(&reader, swf);
1510 void swf_ReadABCfile(char*filename, SWF*swf)
1512 memset(swf, 0, sizeof(SWF));
1514 swf->fileAttributes=FILEATTRIBUTE_AS3; //as3
1515 TAG*tag = swf->firstTag = swf_InsertTag(0, ST_RAWABC);
1516 memfile_t*file = memfile_open(filename);
1517 swf_SetBlock(tag, file->data, file->len);
1518 memfile_close(file);
1521 int no_extra_tags = 0;
1523 int WriteExtraTags(SWF*swf, writer_t*writer)
1525 TAG*t = swf->firstTag;
1526 TAG* has_fileattributes=0;
1527 int has_scenedescription=0;
1528 int has_version_8_action=0;
1529 int has_version_9_action=0;
1532 if(t->id == ST_FILEATTRIBUTES)
1533 has_fileattributes = t;
1534 if(t->id == ST_SCENEDESCRIPTION)
1535 has_scenedescription = 1;
1536 if(t->id == ST_DOABC)
1537 has_version_9_action=1;
1538 /* FIXME: this doesn't yet find actionscript in buttons */
1539 if(t->id == ST_DOACTION || t->id == ST_DOINITACTION)
1540 has_version_8_action=1;
1541 if(t->id == ST_PLACEOBJECT2 && t->len && (t->data[0]&0x80))
1542 has_version_8_action=1;
1545 if(has_version_8_action && has_version_9_action) {
1546 fprintf(stderr, "Warning: File contains both flash 8 and flash 9 actionscript\n");
1549 if(swf->fileVersion >= 9) {
1550 if(!has_fileattributes) {
1551 U32 flags = swf->fileAttributes|FILEATTRIBUTE_AS3; // 16 = has symbolclass tag | 8 = actionscript3 | 1 = usenetwork
1552 if(has_version_8_action && !has_version_9_action)
1553 flags &= ~FILEATTRIBUTE_AS3;
1554 TAG*fileattrib = swf_InsertTag(0, ST_FILEATTRIBUTES);
1555 swf_SetU32(fileattrib, flags);
1557 if(swf_WriteTag2(writer, fileattrib)<0)
1560 len += swf_WriteTag(-1,fileattrib);
1562 swf_DeleteTag(0, fileattrib);
1564 if(swf_WriteTag2(writer, has_fileattributes)<0)
1567 if(0 && !has_scenedescription) {
1568 TAG*scene = swf_InsertTag(0, ST_SCENEDESCRIPTION);
1569 swf_SetU16(scene, 1);
1570 swf_SetString(scene, (U8*)"Scene 1");
1571 swf_SetU8(scene, 0);
1573 if(swf_WriteTag2(writer, scene)<0)
1576 len += swf_WriteTag(-1,scene);
1578 swf_DeleteTag(0, scene);
1584 int swf_WriteSWF2(writer_t*writer, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1592 writer_t*original_writer = writer;
1593 int writer_lastpos = 0;
1595 if (!swf) return -1;
1596 if (!writer) return -1; // the caller should provide a nullwriter, not 0, for querying SWF size
1598 if(original_writer) writer_lastpos = original_writer->pos;
1600 // Count Frames + File Size
1606 if(swf->firstTag && !no_extra_tags) {
1607 len += WriteExtraTags(swf, 0);
1610 len += swf_WriteTag(-1,t);
1611 if(t->id == ST_DEFINESPRITE && !swf_IsFolded(t)) inSprite++;
1612 else if(t->id == ST_END && inSprite) inSprite--;
1613 else if(t->id == ST_END && !inSprite) {
1614 if(t->prev && t->prev->id!=ST_SHOWFRAME)
1617 else if(t->id == ST_SHOWFRAME && !inSprite) frameCount++;
1625 memset(&t1,0x00,sizeof(TAG));
1629 { // measure header file size
1632 memset(&t2,0x00,sizeof(TAG));
1635 swf_SetRect(&t2, &swf->movieSize);
1636 swf_SetU16(&t2, swf->frameRate);
1637 swf_SetU16(&t2, swf->frameCount);
1638 l = swf_GetTagLen(&t2)+8;
1640 if(swf->compressed == 8) {
1645 if(len) {// don't touch headers without tags
1646 swf->fileSize = fileSize;
1647 swf->frameCount = frameCount;
1650 if(swf->compressed != 8) {
1651 /* compressed flag set to 8 means "skip first 8
1652 header bytes". This is necessary if the caller wants to
1653 create compressed SWFs himself .
1654 It also means that we don't initialize our own zlib
1655 writer, but assume the caller provided one.
1657 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
1659 writer->write(writer, id, 3);
1662 writer->write(writer, id, 3);
1665 writer->write(writer, &swf->fileVersion, 1);
1666 PUT32(b4, swf->fileSize);
1667 writer->write(writer, b4, 4);
1669 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6)) {
1670 writer_init_zlibdeflate(&zwriter, writer);
1675 swf_SetRect(&t1,&swf->movieSize);
1676 swf_SetU16(&t1,swf->frameRate);
1677 swf_SetU16(&t1,swf->frameCount);
1679 ret = writer->write(writer,b,swf_GetTagLen(&t1));
1680 if (ret!=swf_GetTagLen(&t1))
1683 fprintf(stderr, "ret:%d\n",ret);
1685 fprintf(stderr,"WriteSWF() failed: Header.\n");
1690 if(swf->firstTag && !no_extra_tags) {
1691 WriteExtraTags(swf, writer);
1696 if(no_extra_tags || t->id != ST_FILEATTRIBUTES) {
1697 if(swf_WriteTag2(writer, t)<0)
1702 if(swf->compressed==1 || (swf->compressed==0 && swf->fileVersion>=6) || swf->compressed==8) {
1703 if(swf->compressed != 8) {
1704 zwriter.finish(&zwriter);
1705 return original_writer->pos - writer_lastpos;
1707 return (int)fileSize;
1709 return (int)fileSize;
1714 int swf_SaveSWF(SWF * swf, char*filename)
1716 int fi = open(filename, O_BINARY|O_RDWR|O_TRUNC|O_CREAT, 0777);
1721 if(swf_WriteSWF(fi, swf)<0) {
1722 fprintf(stderr, "Unable to write output file: %s\n", filename);
1729 int swf_WriteSWF(int handle, SWF * swf) // Writes SWF to file, returns length or <0 if fails
1735 writer_init_nullwriter(&writer);
1736 len = swf_WriteSWF2(&writer, swf);
1739 writer_init_filewriter(&writer, handle);
1740 len = swf_WriteSWF2(&writer, swf);
1741 writer.finish(&writer);
1745 int swf_WriteHeader2(writer_t*writer,SWF * swf)
1748 memcpy(&myswf,swf,sizeof(SWF));
1750 return swf_WriteSWF2(writer, &myswf);
1753 int swf_WriteHeader(int handle,SWF * swf)
1756 memcpy(&myswf,swf,sizeof(SWF));
1758 return swf_WriteSWF(handle, &myswf);
1761 int swf_WriteCGI(SWF * swf)
1765 len = swf_WriteSWF(-1,swf);
1767 if (len<0) return -1;
1769 sprintf(s,"Content-type: application/x-shockwave-flash\n"
1770 "Accept-Ranges: bytes\n"
1771 "Content-Length: %lu\n"
1772 "Expires: Thu, 13 Apr 2000 23:59:59 GMT\n"
1775 write(fileno(stdout),s,strlen(s));
1776 return swf_WriteSWF(fileno(stdout),swf);
1779 SWF* swf_CopySWF(SWF*swf)
1781 SWF*nswf = (SWF*)rfx_alloc(sizeof(SWF));
1783 memcpy(nswf, swf, sizeof(SWF));
1785 tag = swf->firstTag;
1788 ntag = swf_CopyTag(ntag, tag);
1790 nswf->firstTag = ntag;
1796 void swf_FreeTags(SWF * swf) // Frees all malloc'ed memory for tags
1797 { TAG * t = swf->firstTag;
1800 { TAG * tnew = t->next;
1801 if (t->data) rfx_free(t->data);
1808 // include advanced functions
1810 //#include "modules/swfdump.c"
1811 //#include "modules/swfshape.c"
1812 //#include "modules/swftext.c"
1813 //#include "modules/swffont.c"
1814 //#include "modules/swfobject.c"
1815 //#include "modules/swfbutton.c"
1816 //#include "modules/swftools.c"
1817 //#include "modules/swfcgi.c"
1818 //#include "modules/swfbits.c"
1819 //#include "modules/swfaction.c"
1820 //#include "modules/swfabc.c"
1821 //#include "modules/swfsound.c"
1822 //#include "modules/swfdraw.c"
1823 //#include "modules/swfrender.c"
1824 //#include "modules/swffilter.c"