void Alcatraz::truncate_entry()
{
CString arg0(getArgRep(0)) ;
pid_t pid = mp->pid() ;
ArchDep *arch = mp->getArch() ;
char normpath[PATH_MAX], buf[PATH_MAX] ;
/* first get the real path of the file */
normalizePath(arg0.get().c_str(), normpath) ;
int maptype = translatePath(normpath, buf, true);
switch (maptype) {
case PATH_NOTALLOWED:
arch->abortCall(pid, -1, ENOENT) ;
break ;
case PATH_DELETED:
arch->abortCall(pid, -1, ENOENT) ;
break ;
case PATH_CREATED:
case PATH_MODIFIED:{
#ifdef INSTALL_SHIELD
pid_t ppid = mp->ppid() ;
mod_log("F", normpath, buf, "MD", pid, ppid) ;
#endif
arg0.set(buf) ;
break ;
}
case PATH_NEW: {
int retval = truncate_failure(buf) ;
if (retval != 0) {
arch->abortCall(pid, -1, retval) ;
}
else {
char tempfile[PATH_MAX] ;
mt.isolate(buf, tempfile, false) ;
#ifdef INSTALL_SHIELD
pid_t ppid = mp->ppid() ;
mod_log("F", normpath, tempfile, "MD", pid, ppid) ;
#endif
arg0.set(tempfile) ;
}
break ;
}
}
}
void Alcatraz::open_entry()
{
CString arg0(getArgRep(0)) ;
Integer arg1(getArgRep(1)) ;
pid_t pid = mp->pid() ;
ArchDep *arch = mp->getArch() ;
char normpath[PATH_MAX], buf[PATH_MAX] ;
int maptype ;
if (strncmp("/.a_to_GUI", arg0.get().c_str(), 10) == 0) {
mt.mapping.sendtoGUI(false) ;
arch->abortCall(pid, -1, EPERM) ;
return ;
}
if (strncmp("/.alcatraz", arg0.get().c_str(), 10) == 0) {
arg0.set(arg0.get().c_str()+10) ;
arg1.set(0) ;
return ;
}
// check open modes
int flag = arg1.get() ;
bool readonly = true ;
if (flag&O_WRONLY || flag&O_RDWR || flag&O_CREAT)
readonly = false ;
bool trunc = false ;
if (!readonly && flag&O_TRUNC)
trunc = true ;
normalizePath(arg0.get().c_str(), normpath) ;
maptype = translatePath(normpath, buf, true, tempname);
// Remember the association between file descriptors and path names
// It remembers the canonized name
char *tmp ;
if (PATH_NEW == maptype)
tmp = buf ;
else tmp = normpath ;
size_t strsize = strlen(tmp) + 1 ;
char *duppath = new char[strsize] ;
if (0 != duppath) {
memcpy(duppath, tmp, strsize) ;
}
ProcData *pData = processData.lookUp(pid) ;
if (0 == pData) {
pData = new ProcData() ;
processData.insert(pid, pData) ;
}
pData->storeOpenName(duppath) ;
switch(maptype) {
case PATH_NOTALLOWED:
arch->abortCall(pid, -1, ENOENT);
break;
case PATH_CREATED:
case PATH_MODIFIED:
#ifdef INSTALL_SHIELD
if (!readonly) {
pid_t ppid = mp->ppid() ;
mt.mapping.appendTime(normpath, pid, ppid) ;
if (access(buf, F_OK) == 0)
mod_log("F", normpath, buf, "MD", pid, ppid) ;
else
mod_log("F", normpath, buf, "CR", pid, ppid) ;
}
#endif
arg0.set(buf) ;
break ;
case PATH_DELETED: {
if (readonly)
arch->abortCall(pid, -1, ENOENT) ;
else {
/* create a new file, delete previous entry and
generate a new temp file */
char tempfile[PATH_MAX] ;
mt.delMapping(tempname) ;
mt.newEntry(TYPE_FILE, PATH_MODIFIED, tempname, tempfile) ;
arg0.set(tempfile) ;
#ifdef INSTALL_SHIELD
pid_t ppid = mp->ppid() ;
mod_log("F", normpath, tempfile, "CR", pid, ppid) ;
#endif
}
break ;
}
case PATH_NEW: {
if (!readonly){
if (access(buf, F_OK)==0) { /* File exists */
struct stat statbuf ;
if (stat(buf, &statbuf) == 0){/*success*/
if (!S_ISREG(statbuf.st_mode)) break ;
}
if (access(buf, W_OK) == 0) {
/* can write, isolate file */
char tempfile[PATH_MAX] ;
mt.isolate(buf, tempfile, trunc) ;
arg0.set(tempfile) ;
#ifdef INSTALL_SHIELD
pid_t ppid = mp->ppid() ;
mod_log("F", normpath, tempfile, "MD", pid, ppid) ;
#endif
}
}
else { /* File Not Exists */
if (parent_writable(buf)) {
char tempfile[PATH_MAX] ;
mt.newEntry(TYPE_FILE, PATH_CREATED, buf, tempfile) ;
// mt.getStatus(normpath, buf) ;
arg0.set(tempfile) ;
#ifdef INSTALL_SHIELD
pid_t ppid = mp->ppid() ;
mod_log("F", normpath, tempfile, "CR", pid, ppid) ;
#endif
}
}
}
else {
arg0.set(buf) ;
}
break ;
}
default:
break ;
}
}