Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 411 insertions, 0 deletions

diff --git a/other-licenses/bsdiff/bsdiff.c b/other-licenses/bsdiff/bsdiff.c
new file mode 100644
index 0000000000..eaf9027365
--- /dev/null
+++ b/other-licenses/bsdiff/bsdiff.c
@@ -0,0 +1,411 @@
+/* vim:set ts=8 sw=8 sts=8 noet: */
+/*
+  bsdiff.c -- Binary patch generator.
+
+  Copyright 2003 Colin Percival
+
+  For the terms under which this work may be distributed, please see
+  the adjoining file "LICENSE".
+
+  ChangeLog:
+  2005-05-05 - Use the modified header struct from bspatch.h; use 32-bit
+               values throughout.
+                 --Benjamin Smedberg <benjamin@smedbergs.us>
+  2005-05-18 - Use the same CRC algorithm as bzip2, and leverage the CRC table
+               provided by libbz2.
+                 --Darin Fisher <darin@meer.net>
+*/
+
+#include "bspatch.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#ifdef XP_WIN
+#include <io.h>
+#include <winsock2.h>
+#define open _open
+#define close _close
+#define read _read
+#define lseek _lseek
+#define write _write
+#else
+#include <unistd.h>
+#include <arpa/inet.h>
+#define _O_BINARY 0
+#endif
+
+#include "crctable.h"
+
+#undef MIN
+#define MIN(x,y) (((x)<(y)) ? (x) : (y))
+
+/*---------------------------------------------------------------------------*/
+
+/* This variable lives in libbz2.  It's declared in bzlib_private.h, so we just
+ * declare it here to avoid including that entire header file.
+ */
+extern unsigned int BZ2_crc32Table[256];
+
+static unsigned int
+crc32(const unsigned char *buf, unsigned int len)
+{
+	unsigned int crc = 0xffffffffL;
+
+	const unsigned char *end = buf + len;
+	for (; buf != end; ++buf)
+		crc = (crc << 8) ^ BZ2_crc32Table[(crc >> 24) ^ *buf];
+
+	crc = ~crc;
+	return crc;
+}
+
+/*---------------------------------------------------------------------------*/
+
+static void
+reporterr(int e, const char *fmt, ...)
+{
+	if (fmt) {
+		va_list args;
+		va_start(args, fmt);
+		vfprintf(stderr, fmt, args);
+		va_end(args);
+	}
+
+	exit(e);
+}
+
+static void
+split(int32_t *I,int32_t *V,int32_t start,int32_t len,int32_t h)
+{
+	int32_t i,j,k,x,tmp,jj,kk;
+
+	if(len<16) {
+		for(k=start;k<start+len;k+=j) {
+			j=1;x=V[I[k]+h];
+			for(i=1;k+i<start+len;i++) {
+				if(V[I[k+i]+h]<x) {
+					x=V[I[k+i]+h];
+					j=0;
+				};
+				if(V[I[k+i]+h]==x) {
+					tmp=I[k+j];I[k+j]=I[k+i];I[k+i]=tmp;
+					j++;
+				};
+			};
+			for(i=0;i<j;i++) V[I[k+i]]=k+j-1;
+			if(j==1) I[k]=-1;
+		};
+		return;
+	};
+
+	x=V[I[start+len/2]+h];
+	jj=0;kk=0;
+	for(i=start;i<start+len;i++) {
+		if(V[I[i]+h]<x) jj++;
+		if(V[I[i]+h]==x) kk++;
+	};
+	jj+=start;kk+=jj;
+
+	i=start;j=0;k=0;
+	while(i<jj) {
+		if(V[I[i]+h]<x) {
+			i++;
+		} else if(V[I[i]+h]==x) {
+			tmp=I[i];I[i]=I[jj+j];I[jj+j]=tmp;
+			j++;
+		} else {
+			tmp=I[i];I[i]=I[kk+k];I[kk+k]=tmp;
+			k++;
+		};
+	};
+
+	while(jj+j<kk) {
+		if(V[I[jj+j]+h]==x) {
+			j++;
+		} else {
+			tmp=I[jj+j];I[jj+j]=I[kk+k];I[kk+k]=tmp;
+			k++;
+		};
+	};
+
+	if(jj>start) split(I,V,start,jj-start,h);
+
+	for(i=0;i<kk-jj;i++) V[I[jj+i]]=kk-1;
+	if(jj==kk-1) I[jj]=-1;
+
+	if(start+len>kk) split(I,V,kk,start+len-kk,h);
+}
+
+static void
+qsufsort(int32_t *I,int32_t *V,unsigned char *old,int32_t oldsize)
+{
+	int32_t buckets[256];
+	int32_t i,h,len;
+
+	for(i=0;i<256;i++) buckets[i]=0;
+	for(i=0;i<oldsize;i++) buckets[old[i]]++;
+	for(i=1;i<256;i++) buckets[i]+=buckets[i-1];
+	for(i=255;i>0;i--) buckets[i]=buckets[i-1];
+	buckets[0]=0;
+
+	for(i=0;i<oldsize;i++) I[++buckets[old[i]]]=i;
+	I[0]=oldsize;
+	for(i=0;i<oldsize;i++) V[i]=buckets[old[i]];
+	V[oldsize]=0;
+	for(i=1;i<256;i++) if(buckets[i]==buckets[i-1]+1) I[buckets[i]]=-1;
+	I[0]=-1;
+
+	for(h=1;I[0]!=-(oldsize+1);h+=h) {
+		len=0;
+		for(i=0;i<oldsize+1;) {
+			if(I[i]<0) {
+				len-=I[i];
+				i-=I[i];
+			} else {
+				if(len) I[i-len]=-len;
+				len=V[I[i]]+1-i;
+				split(I,V,i,len,h);
+				i+=len;
+				len=0;
+			};
+		};
+		if(len) I[i-len]=-len;
+	};
+
+	for(i=0;i<oldsize+1;i++) I[V[i]]=i;
+}
+
+static int32_t
+matchlen(unsigned char *old,int32_t oldsize,unsigned char *newbuf,int32_t newsize)
+{
+	int32_t i;
+
+	for(i=0;(i<oldsize)&&(i<newsize);i++)
+		if(old[i]!=newbuf[i]) break;
+
+	return i;
+}
+
+static int32_t
+search(int32_t *I,unsigned char *old,int32_t oldsize,
+       unsigned char *newbuf,int32_t newsize,int32_t st,int32_t en,int32_t *pos)
+{
+	int32_t x,y;
+
+	if(en-st<2) {
+		x=matchlen(old+I[st],oldsize-I[st],newbuf,newsize);
+		y=matchlen(old+I[en],oldsize-I[en],newbuf,newsize);
+
+		if(x>y) {
+			*pos=I[st];
+			return x;
+		} else {
+			*pos=I[en];
+			return y;
+		}
+	};
+
+	x=st+(en-st)/2;
+	if(memcmp(old+I[x],newbuf,MIN(oldsize-I[x],newsize))<0) {
+		return search(I,old,oldsize,newbuf,newsize,x,en,pos);
+	} else {
+		return search(I,old,oldsize,newbuf,newsize,st,x,pos);
+	};
+}
+
+int main(int argc,char *argv[])
+{
+	int fd;
+	unsigned char *old,*newbuf;
+	int32_t oldsize,newsize;
+	int32_t *I,*V;
+
+	int32_t scan,pos,len;
+	int32_t lastscan,lastpos,lastoffset;
+	int32_t oldscore,scsc;
+
+	int32_t s,Sf,lenf,Sb,lenb;
+	int32_t overlap,Ss,lens;
+	int32_t i;
+
+	int32_t dblen,eblen;
+	unsigned char *db,*eb;
+
+	unsigned int scrc;
+
+	MBSPatchHeader header = {
+		{'M','B','D','I','F','F','1','0'},
+		0, 0, 0, 0, 0, 0
+	};
+
+	uint32_t numtriples;
+
+	if(argc!=4)
+		reporterr(1,"usage: %s <oldfile> <newfile> <patchfile>\n",argv[0]);
+
+	/* Allocate oldsize+1 bytes instead of oldsize bytes to ensure
+		that we never try to malloc(0) and get a NULL pointer */
+	if(((fd=open(argv[1],O_RDONLY|_O_BINARY,0))<0) ||
+		((oldsize=lseek(fd,0,SEEK_END))==-1) ||
+		((old=(unsigned char*) malloc(oldsize+1))==NULL) ||
+		(lseek(fd,0,SEEK_SET)!=0) ||
+		(read(fd,old,oldsize)!=oldsize) ||
+		(close(fd)==-1))
+		reporterr(1,"%s\n",argv[1]);
+
+	scrc = crc32(old, oldsize);
+
+	if(((I=(int32_t*) malloc((oldsize+1)*sizeof(int32_t)))==NULL) ||
+		((V=(int32_t*) malloc((oldsize+1)*sizeof(int32_t)))==NULL))
+		reporterr(1,NULL);
+
+	qsufsort(I,V,old,oldsize);
+
+	free(V);
+
+	/* Allocate newsize+1 bytes instead of newsize bytes to ensure
+		that we never try to malloc(0) and get a NULL pointer */
+	if(((fd=open(argv[2],O_RDONLY|_O_BINARY,0))<0) ||
+		((newsize=lseek(fd,0,SEEK_END))==-1) ||
+		((newbuf=(unsigned char*) malloc(newsize+1))==NULL) ||
+		(lseek(fd,0,SEEK_SET)!=0) ||
+		(read(fd,newbuf,newsize)!=newsize) ||
+		(close(fd)==-1)) reporterr(1,"%s\n",argv[2]);
+
+	if(((db=(unsigned char*) malloc(newsize+1))==NULL) ||
+		((eb=(unsigned char*) malloc(newsize+1))==NULL))
+		reporterr(1,NULL);
+
+	dblen=0;
+	eblen=0;
+
+	if((fd=open(argv[3],O_CREAT|O_TRUNC|O_WRONLY|_O_BINARY,0666))<0)
+		reporterr(1,"%s\n",argv[3]);
+
+	/* start writing here */
+
+	/* We don't know the lengths yet, so we will write the header again
+		 at the end */
+
+	if(write(fd,&header,sizeof(MBSPatchHeader))!=sizeof(MBSPatchHeader))
+		reporterr(1,"%s\n",argv[3]);
+
+	scan=0;len=0;
+	lastscan=0;lastpos=0;lastoffset=0;
+	numtriples = 0;
+	while(scan<newsize) {
+		oldscore=0;
+
+		for(scsc=scan+=len;scan<newsize;scan++) {
+			len=search(I,old,oldsize,newbuf+scan,newsize-scan,
+					0,oldsize,&pos);
+
+			for(;scsc<scan+len;scsc++)
+			if((scsc+lastoffset<oldsize) &&
+				(old[scsc+lastoffset] == newbuf[scsc]))
+				oldscore++;
+
+			if(((len==oldscore) && (len!=0)) || 
+				(len>oldscore+10)) break;
+
+			if((scan+lastoffset<oldsize) &&
+				(old[scan+lastoffset] == newbuf[scan]))
+				oldscore--;
+		};
+
+		if((len!=oldscore) || (scan==newsize)) {
+			MBSPatchTriple triple;
+
+			s=0;Sf=0;lenf=0;
+			for(i=0;(lastscan+i<scan)&&(lastpos+i<oldsize);) {
+				if(old[lastpos+i]==newbuf[lastscan+i]) s++;
+				i++;
+				if(s*3-i*2>Sf*3-lenf*2) { Sf=s; lenf=i; };
+			};
+
+			lenb=0;
+			if(scan<newsize) {
+				s=0;Sb=0;
+				for(i=1;(scan>=lastscan+i)&&(pos>=i);i++) {
+					if(old[pos-i]==newbuf[scan-i]) s++;
+					if(s*3-i*2>Sb*3-lenb*2) { Sb=s; lenb=i; };
+				};
+			};
+
+			if(lastscan+lenf>scan-lenb) {
+				overlap=(lastscan+lenf)-(scan-lenb);
+				s=0;Ss=0;lens=0;
+				for(i=0;i<overlap;i++) {
+					if(newbuf[lastscan+lenf-overlap+i]==
+					   old[lastpos+lenf-overlap+i]) s++;
+					if(newbuf[scan-lenb+i]==
+					   old[pos-lenb+i]) s--;
+					if(s>Ss) { Ss=s; lens=i+1; };
+				};
+
+				lenf+=lens-overlap;
+				lenb-=lens;
+			};
+
+			for(i=0;i<lenf;i++)
+				db[dblen+i]=newbuf[lastscan+i]-old[lastpos+i];
+			for(i=0;i<(scan-lenb)-(lastscan+lenf);i++)
+				eb[eblen+i]=newbuf[lastscan+lenf+i];
+
+			dblen+=lenf;
+			eblen+=(scan-lenb)-(lastscan+lenf);
+
+			triple.x = htonl(lenf);
+			triple.y = htonl((scan-lenb)-(lastscan+lenf));
+			triple.z = htonl((pos-lenb)-(lastpos+lenf));
+			if (write(fd,&triple,sizeof(triple)) != sizeof(triple))
+				reporterr(1,NULL);
+
+#ifdef DEBUG_bsmedberg
+			printf("Writing a block:\n"
+			       "	X: %u\n"
+			       "	Y: %u\n"
+			       "	Z: %i\n",
+			       (uint32_t) lenf,
+			       (uint32_t) ((scan-lenb)-(lastscan+lenf)),
+			       (uint32_t) ((pos-lenb)-(lastpos+lenf)));
+#endif
+
+			++numtriples;
+
+			lastscan=scan-lenb;
+			lastpos=pos-lenb;
+			lastoffset=pos-scan;
+		};
+	};
+
+	if(write(fd,db,dblen)!=dblen)
+		reporterr(1,NULL);
+
+	if(write(fd,eb,eblen)!=eblen)
+		reporterr(1,NULL);
+
+	header.slen	= htonl(oldsize);
+	header.scrc32	= htonl(scrc);
+	header.dlen	= htonl(newsize);
+	header.cblen	= htonl(numtriples * sizeof(MBSPatchTriple));
+	header.difflen	= htonl(dblen);
+	header.extralen = htonl(eblen);
+
+	if (lseek(fd,0,SEEK_SET) == -1 ||
+	    write(fd,&header,sizeof(header)) != sizeof(header) ||
+	    close(fd) == -1)
+		reporterr(1,NULL);
+
+	free(db);
+	free(eb);
+	free(I);
+	free(old);
+	free(newbuf);
+
+	return 0;
+}
+