#include "session.h"
#include "tempdatabase.h"
#include "authority.h"
-#include "flippers.h"
+#include "child.h" // ServerChild (really UnixPlusPlus::Child)::find()
+
+#include <security_utilities/logging.h> //@@@ debug only
+#include "agentquery.h"
//
// Construct a Process object.
//
-Process::Process(Port servicePort, TaskPort taskPort,
- const ClientSetupInfo *info, const char *identity, const CommonCriteria::AuditToken &audit)
+Process::Process(TaskPort taskPort, const ClientSetupInfo *info, const CommonCriteria::AuditToken &audit)
: mTaskPort(taskPort), mByteFlipped(false), mPid(audit.pid()), mUid(audit.euid()), mGid(audit.egid())
{
+ StLock<Mutex> _(*this);
+
// set parent session
- parent(Session::find(servicePort));
+ parent(Session::find(audit.sessionId(), true));
// let's take a look at our wannabe client...
if (mTaskPort.pid() != mPid) {
- secdebug("SS", "Task/pid setup mismatch pid=%d task=%d(%d) for %s",
- mPid, mTaskPort.port(), mTaskPort.pid(),
- (identity && identity[0]) ? identity : "(unknown)");
+ secdebug("SS", "Task/pid setup mismatch pid=%d task=%d(%d)",
+ mPid, mTaskPort.port(), mTaskPort.pid());
CssmError::throwMe(CSSMERR_CSSM_ADDIN_AUTHENTICATE_FAILED); // you lied!
}
- setup(info, identity);
-
- secdebug("SS", "New process %p(%d) uid=%d gid=%d session=%p TP=%d %sfor %s",
- this, mPid, mUid, mGid, &session(),
- mTaskPort.port(),
- mByteFlipped ? "FLIP " : "",
- (identity && identity[0]) ? identity : "(unknown)");
+ setup(info);
+ ClientIdentification::setup(this->pid());
+
+ // NB: ServerChild::find() should only be used to determine
+ // *existence*. Don't use the returned Child object for anything else,
+ // as it is not protected against its underlying process's destruction.
+ if (this->pid() == getpid() // called ourselves (through some API). Do NOT record this as a "dirty" transaction
+ || ServerChild::find<ServerChild>(this->pid())) // securityd's child; do not mark this txn dirty
+ VProc::Transaction::deactivate();
+
+ if (SECURITYD_CLIENT_NEW_ENABLED())
+ SECURITYD_CLIENT_NEW(this, this->pid(), &this->session(),
+ (char *)codePath(this->processCode()).c_str(), taskPort, mUid, mGid, mByteFlipped);
}
//
// Screen a process setup request for an existing process.
-// This usually means the client has called exec(2) and forgotten all about itself.
-// Though it could be a nefarious attempt to fool us...
+// This means the client has requested intialization even though we remember having
+// talked to it in the past. This could either be an exec(2), or the client could just
+// have forgotten all about its securityd client state. Or it could be an attack...
//
-void Process::reset(Port servicePort, TaskPort taskPort,
- const ClientSetupInfo *info, const char *identity, const CommonCriteria::AuditToken &audit)
+void Process::reset(TaskPort taskPort, const ClientSetupInfo *info, const CommonCriteria::AuditToken &audit)
{
- if (servicePort != session().servicePort() || taskPort != mTaskPort) {
- secdebug("SS", "Process %p(%d) reset mismatch (sp %d-%d, tp %d-%d) for %s",
- this, pid(), servicePort.port(), session().servicePort().port(), taskPort.port(), mTaskPort.port(),
- (identity && identity[0]) ? identity : "(unknown)");
- CssmError::throwMe(CSSMERR_CSSM_ADDIN_AUTHENTICATE_FAILED); // liar
+ StLock<Mutex> _(*this);
+ if (taskPort != mTaskPort) {
+ secdebug("SS", "Process %p(%d) reset mismatch (tp %d-%d)",
+ this, pid(), taskPort.port(), mTaskPort.port());
+ //@@@ CssmError::throwMe(CSSM_ERRCODE_VERIFICATION_FAILURE); // liar
}
+ setup(info);
+ CFCopyRef<SecCodeRef> oldCode = processCode();
- setup(info, identity);
-
- secdebug("SS", "process %p(%d) has reset; now %sfor %s",
- this, mPid, mByteFlipped ? "FLIP " : "",
- (identity && identity[0]) ? identity : "(unknown)");
+ ClientIdentification::setup(this->pid()); // re-constructs processCode()
+ if (CFEqual(oldCode, processCode())) {
+ SECURITYD_CLIENT_RESET_AMNESIA(this);
+ } else {
+ SECURITYD_CLIENT_RESET_FULL(this);
+ CodeSigningHost::reset();
+ }
}
//
// Common set processing
//
-void Process::setup(const ClientSetupInfo *info, const char *identity)
+void Process::setup(const ClientSetupInfo *info)
{
// process setup info
assert(info);
uint32 pversion;
if (info->order == 0x1234) { // right side up
pversion = info->version;
+ mByteFlipped = false;
} else if (info->order == 0x34120000) { // flip side up
- pversion = ntohl(info->version);
+ pversion = flip(info->version);
mByteFlipped = true;
} else // non comprende
CssmError::throwMe(CSSM_ERRCODE_INCOMPATIBLE_VERSION);
// check wire protocol version
if (pversion != SSPROTOVERSION)
CssmError::throwMe(CSSM_ERRCODE_INCOMPATIBLE_VERSION);
-
- // process identity (if given)
- try {
- mClientCode = OSXCode::decode(identity);
- mClientIdent = deferred; // will calculate code identity when needed
- } catch (...) {
- secdebug("SS", "process %p(%d) identity decode threw exception", this, pid());
- mClientCode = NULL;
- mClientIdent = unknown; // no chance to squeeze a code identity from this
- secdebug("SS", "process %p(%d) no clientCode - marked anonymous", this, pid());
- }
}
//
Process::~Process()
{
+ SECURITYD_CLIENT_RELEASE(this, this->pid());
+
// tell all our authorizations that we're gone
IFDEBUG(if (!mAuthorizations.empty())
secdebug("SS", "Process %p(%d) clearing %d authorizations",
if (auth->endProcess(*this))
delete auth;
}
-
- // no need to lock here; the client process has no more active threads
- secdebug("SS", "Process %p(%d) has died", this, mPid);
// release our name for the process's task port
if (mTaskPort)
}
+void Process::checkSession(const audit_token_t &auditToken)
+{
+ AuditToken audit(auditToken);
+ if (audit.sessionId() != this->session().sessionId())
+ this->changeSession(audit.sessionId());
+}
+
+
LocalDatabase &Process::localStore()
{
StLock<Mutex> _(*this);
// Change the session of a process.
// This is the result of SessionCreate from a known process client.
//
-void Process::changeSession(Port servicePort)
+void Process::changeSession(Session::SessionId sessionId)
{
// re-parent
- parent(Session::find(servicePort));
-
- secdebug("SS", "process %p(%d) changed session to %p", this, pid(), &session());
-}
-
-
-//
-// CodeSignatures implementation of Identity.
-// The caller must make sure we have a valid (not necessarily hash-able) clientCode().
-//
-string Process::getPath() const
-{
- assert(mClientCode);
- return mClientCode->canonicalPath();
-}
-
-const CssmData Process::getHash(CodeSigning::OSXSigner &signer) const
-{
- switch (mClientIdent) {
- case deferred:
- try {
- // try to calculate our signature hash (first time use)
- mCachedSignature.reset(mClientCode->sign(signer));
- assert(mCachedSignature.get());
- mClientIdent = known;
- secdebug("SS", "process %p(%d) code signature computed", this, pid());
- break;
- } catch (...) {
- // couldn't get client signature (unreadable, gone, hack attack, ...)
- mClientIdent = unknown;
- secdebug("SS", "process %p(%d) no code signature - anonymous", this, pid());
- CssmError::throwMe(CSSM_ERRCODE_INSUFFICIENT_CLIENT_IDENTIFICATION);
- }
- case known:
- assert(mCachedSignature.get());
- break;
- case unknown:
- CssmError::throwMe(CSSM_ERRCODE_INSUFFICIENT_CLIENT_IDENTIFICATION);
- }
- return CssmData(*mCachedSignature);
+ parent(Session::find(sessionId, true));
+ SECURITYD_CLIENT_CHANGE_SESSION(this, &this->session());
}
}
-//
-// Notification client maintainance
-//
-void Process::requestNotifications(Port port, SecurityServer::NotificationDomain domain, SecurityServer::NotificationMask events)
-{
- new ProcessListener(*this, port, domain, events);
-}
-
-void Process::stopNotifications(Port port)
-{
- if (!Listener::remove(port))
- CssmError::throwMe(CSSMERR_CSSM_INVALID_HANDLE_USAGE); //@@@ bad name (should be "no such callback")
-}
-
-
//
// Debug dump support
//
Debug::dump(" FLIPPED");
Debug::dump(" task=%d pid=%d uid/gid=%d/%d",
mTaskPort.port(), mPid, mUid, mGid);
- if (mClientCode) {
- Debug::dump(" client=%s", mClientCode->canonicalPath().c_str());
- switch (mClientIdent) {
- case deferred:
- break;
- case known:
- Debug::dump("[OK]");
- break;
- case unknown:
- Debug::dump("[UNKNOWN]");
- break;
- }
- } else {
- Debug::dump(" NO CLIENT ID");
- }
+ CodeSigningHost::dump();
+ ClientIdentification::dump();
}
#endif //DEBUGDUMP
projects / apple / securityd.git / blobdiff