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osxsnarf.c
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osxsnarf.c
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#undef nil
#include <u.h>
#include <Carbon/Carbon.h>
AUTOFRAMEWORK(Carbon)
#include <libc.h>
#include <thread.h>
#include <fcall.h>
#include <9p.h>
static void fsread(Req *);
static void fswrite(Req *);
enum {
Qroot = 0,
Qsnarf,
SnarfSize = 3*64*1024,
};
Srv fs=
{
.read = fsread,
.write = fswrite,
};
static PasteboardRef appleclip;
static char snarf[SnarfSize+1];
static char *deflisten = "tcp!*!18001";
RWLock l;
void
usage(void)
{
fprint(2, "usage: %s [-f] [-D] [listen]\n", argv0);
sysfatal("usage");
}
void
fswrite(Req *r)
{
CFDataRef cfdata;
PasteboardSyncFlags flags;
char err[128];
if((int)r->fid->file->aux != Qsnarf) {
respond(r, "no such file or directory");
return;
}
if(r->ifcall.offset >= SnarfSize) {
sprintf(err, "writing too much for this buffer. max size is: %d", SnarfSize);
respond(r, err);
return;
}
wlock(&l);
/* silently truncate here. perhaps better to return an error? */
if(r->ifcall.offset + r->ifcall.count > SnarfSize)
r->ifcall.count = SnarfSize - r->ifcall.offset;
memmove(snarf+r->ifcall.offset, r->ifcall.data, r->ifcall.count);
snarf[r->ifcall.offset+r->ifcall.count] = '\0';
if(PasteboardClear(appleclip) != noErr){
respond(r, "apple pasteboard clear failed");
goto werr;
}
flags = PasteboardSynchronize(appleclip);
if((flags&kPasteboardModified) || !(flags&kPasteboardClientIsOwner)){
respond(r, "apple pasteboard cannot assert ownership");
goto werr;
}
cfdata = CFDataCreate(kCFAllocatorDefault, (uint8_t*)snarf, strlen(snarf));
if(cfdata == nil){
respond(r, "apple pasteboard cfdatacreate failed");
goto werr;
}
if(PasteboardPutItemFlavor(appleclip, (PasteboardItemID)1,
CFSTR("public.utf8-plain-text"), cfdata, 0) != noErr){
respond(r, "apple pasteboard putitem failed");
CFRelease(cfdata);
goto werr;
}
CFRelease(cfdata);
r->ofcall.count = r->ifcall.count;
respond(r, nil);
werr:
wunlock(&l);
return;
}
void
fsread(Req *r)
{
CFDataRef cfdata;
OSStatus err = noErr;
ItemCount nItems;
uint32_t i;
if((int)r->fid->file->aux != Qsnarf) {
respond(r, "no such file or directory");
return;
}
rlock(&l);
PasteboardSynchronize(appleclip);
if((err = PasteboardGetItemCount(appleclip, &nItems)) != noErr) {
respond(r, "apple pasteboard GetItemCount failed");
goto rerr;
}
for(i = 1; i <= nItems; ++i) {
PasteboardItemID itemID;
CFArrayRef flavorTypeArray;
CFIndex flavorCount;
if((err = PasteboardGetItemIdentifier(appleclip, i, &itemID)) != noErr){
respond(r, "can't get pasteboard item identifier");
goto rerr;
}
if((err = PasteboardCopyItemFlavors(appleclip, itemID, &flavorTypeArray))!=noErr){
respond(r, "Can't copy pasteboard item flavors");
goto rerr;
}
flavorCount = CFArrayGetCount(flavorTypeArray);
CFIndex flavorIndex;
for(flavorIndex = 0; flavorIndex < flavorCount; ++flavorIndex){
CFStringRef flavorType;
flavorType = (CFStringRef)CFArrayGetValueAtIndex(flavorTypeArray, flavorIndex);
if (UTTypeConformsTo(flavorType, CFSTR("public.utf8-plain-text"))){
if((err = PasteboardCopyItemFlavorData(appleclip, itemID,
CFSTR("public.utf8-plain-text"), &cfdata)) != noErr){
respond(r, "apple pasteboard CopyItem failed");
goto rerr;
}
CFIndex length = CFDataGetLength(cfdata);
if (length > sizeof snarf - 1) length = sizeof snarf - 1;
CFDataGetBytes(cfdata, CFRangeMake(0, length), (uint8_t *)snarf);
snarf[length] = '\0';
char *s = snarf;
while (*s) {
if (*s == '\r') *s = '\n';
s++;
}
CFRelease(cfdata);
}
}
}
readstr(r, snarf);
respond(r, nil);
rerr:
runlock(&l);
}
void
threadmain(int argc, char **argv)
{
File *rootf;
char *lstn = deflisten;
ARGBEGIN{
case 'f':
fs.foreground = 1;
break;
case 'D':
chatty9p++;
break;
break;
default:
usage();
}ARGEND
if(argc == 1)
lstn = argv[0];
else if(argc > 1)
usage();
fs.tree = alloctree(getuser(), getuser(), DMDIR|0555, nil);
rootf = createfile(fs.tree->root, "snarf", getuser(), 0666, nil);
if(rootf == nil)
sysfatal("creating snarf: %r");
rootf->aux = (void *)Qsnarf;
if(PasteboardCreate(kPasteboardClipboard, &appleclip) != noErr)
sysfatal("pasteboard create failed");
threadpostmountsrv(&fs, lstn, nil, MREPL|MCREATE);
threadexits(nil);
}