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#include "stdinc.h"
#include "dat.h"
#include "fns.h"
int fast;
VtConn *zsrc, *zdst;
void
usage(void)
{
fprint(2, "usage: copy src-host dst-host score [type]\n");
threadexitsall("usage");
}
int
parsescore(uchar *score, char *buf, int n)
{
int i, c;
memset(score, 0, VtScoreSize);
if(n < VtScoreSize*2)
return -1;
for(i=0; i<VtScoreSize*2; i++) {
if(buf[i] >= '0' && buf[i] <= '9')
c = buf[i] - '0';
else if(buf[i] >= 'a' && buf[i] <= 'f')
c = buf[i] - 'a' + 10;
else if(buf[i] >= 'A' && buf[i] <= 'F')
c = buf[i] - 'A' + 10;
else {
return -1;
}
if((i & 1) == 0)
c <<= 4;
score[i>>1] |= c;
}
return 0;
}
void
walk(uchar score[VtScoreSize], uint type, int base)
{
int i, n, sub;
uchar *buf;
VtEntry e;
VtRoot root;
if(memcmp(score, vtzeroscore, VtScoreSize) == 0)
return;
buf = vtmallocz(VtMaxLumpSize);
if(fast && vtread(zdst, score, type, buf, VtMaxLumpSize) >= 0){
fprint(2, "skip %V\n", score);
free(buf);
return;
}
n = vtread(zsrc, score, type, buf, VtMaxLumpSize);
if(n < 0){
fprint(2, "warning: could not read block %V %d: %r", score, type);
return;
}
switch(type){
case VtRootType:
if(vtrootunpack(&root, buf) < 0){
fprint(2, "warning: could not unpack root in %V %d\n", score, type);
break;
}
walk(root.score, VtDirType, 0);
walk(root.prev, VtRootType, 0);
break;
case VtDirType:
for(i=0; i<n/VtEntrySize; i++){
if(vtentryunpack(&e, buf, i) < 0){
fprint(2, "warning: could not unpack entry #%d in %V %d\n", i, score, type);
continue;
}
if(!(e.flags & VtEntryActive))
continue;
if(e.flags&VtEntryDir)
base = VtDirType;
else
base = VtDataType;
sub = base | ((e.flags&VtEntryDepthMask)>>VtEntryDepthShift);
walk(e.score, sub, base);
}
break;
case VtDataType:
break;
default: /* pointers */
for(i=0; i<n; i+=VtScoreSize)
if(memcmp(buf+i, vtzeroscore, VtScoreSize) != 0)
walk(buf+i, type-1, base);
break;
}
if(vtwrite(zdst, score, type, buf, n) < 0)
fprint(2, "warning: could not write block %V %d: %r", score, type);
free(buf);
}
void
threadmain(int argc, char *argv[])
{
int type, n;
uchar score[VtScoreSize];
uchar *buf;
ARGBEGIN{
case 'f':
fast = 1;
break;
default:
usage();
break;
}ARGEND
if(argc != 3 && argc != 4)
usage();
fmtinstall('V', vtscorefmt);
if(parsescore(score, argv[2], strlen(argv[2]) < 0))
sysfatal("could not parse score: %r");
buf = vtmallocz(VtMaxLumpSize);
zsrc = vtdial(argv[0]);
if(zsrc == nil)
sysfatal("could not dial src server: %r");
if(vtconnect(zsrc) < 0)
sysfatal("vtconnect src: %r");
zdst = vtdial(argv[1]);
if(zdst == nil)
sysfatal("could not dial dst server: %r");
if(vtconnect(zdst) < 0)
sysfatal("vtconnect dst: %r");
if(argc == 4){
type = atoi(argv[3]);
n = vtread(zsrc, score, type, buf, VtMaxLumpSize);
if(n < 0)
sysfatal("could not read block: %r");
}else{
for(type=0; type<VtMaxType; type++){
n = vtread(zsrc, score, type, buf, VtMaxLumpSize);
if(n >= 0)
break;
}
if(type == VtMaxType)
sysfatal("could not find block %V of any type", score);
}
walk(score, type, VtDirType);
if(vtsync(zdst) < 0)
sysfatal("could not sync dst server: %r");
threadexitsall(0);
}
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