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/* CFSocketStream.c
Copyright (c) 2000-2019, Apple Inc. and the Swift project authors
Portions Copyright (c) 2014-2019, Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See http://swift.org/LICENSE.txt for license information
See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
Responsibility: Jeremy Wyld
*/
// Original Author: Becky Willrich
#include "CFStream.h"
#include "CFNumber.h"
#include "CFInternal.h"
#include "CFStreamInternal.h"
#include "CFStreamPriv.h"
#if TARGET_OS_WIN32
#include <WinSock2.h>
#else
#include <sys/socket.h>
#endif
#if TARGET_OS_MAC
// On Mach these live in CF for historical reasons, even though they are declared in CFNetwork
const int kCFStreamErrorDomainSSL = 3;
const int kCFStreamErrorDomainSOCKS = 5;
CONST_STRING_DECL(kCFStreamPropertyShouldCloseNativeSocket, "kCFStreamPropertyShouldCloseNativeSocket")
CONST_STRING_DECL(kCFStreamPropertyAutoErrorOnSystemChange, "kCFStreamPropertyAutoErrorOnSystemChange");
CONST_STRING_DECL(kCFStreamPropertySOCKSProxy, "kCFStreamPropertySOCKSProxy")
CONST_STRING_DECL(kCFStreamPropertySOCKSProxyHost, "SOCKSProxy")
CONST_STRING_DECL(kCFStreamPropertySOCKSProxyPort, "SOCKSPort")
CONST_STRING_DECL(kCFStreamPropertySOCKSVersion, "kCFStreamPropertySOCKSVersion")
CONST_STRING_DECL(kCFStreamSocketSOCKSVersion4, "kCFStreamSocketSOCKSVersion4")
CONST_STRING_DECL(kCFStreamSocketSOCKSVersion5, "kCFStreamSocketSOCKSVersion5")
CONST_STRING_DECL(kCFStreamPropertySOCKSUser, "kCFStreamPropertySOCKSUser")
CONST_STRING_DECL(kCFStreamPropertySOCKSPassword, "kCFStreamPropertySOCKSPassword")
CONST_STRING_DECL(kCFStreamPropertySocketSecurityLevel, "kCFStreamPropertySocketSecurityLevel");
CONST_STRING_DECL(kCFStreamSocketSecurityLevelNone, "kCFStreamSocketSecurityLevelNone");
CONST_STRING_DECL(kCFStreamSocketSecurityLevelSSLv2, "kCFStreamSocketSecurityLevelSSLv2");
CONST_STRING_DECL(kCFStreamSocketSecurityLevelSSLv3, "kCFStreamSocketSecurityLevelSSLv3");
CONST_STRING_DECL(kCFStreamSocketSecurityLevelTLSv1, "kCFStreamSocketSecurityLevelTLSv1");
CONST_STRING_DECL(kCFStreamSocketSecurityLevelNegotiatedSSL, "kCFStreamSocketSecurityLevelNegotiatedSSL");
#endif
#if TARGET_OS_WIN32
typedef void (*CF_SOCKET_STREAM_PAIR)(CFAllocatorRef, CFStringRef, UInt32, CFSocketNativeHandle, const CFSocketSignature*, CFReadStreamRef*, CFWriteStreamRef*);
#endif
// These are duplicated in CFNetwork, who actually externs them in its headers
CONST_STRING_DECL(kCFStreamPropertySocketSSLContext, "kCFStreamPropertySocketSSLContext")
CONST_STRING_DECL(_kCFStreamPropertySocketSecurityAuthenticatesServerCertificate, "_kCFStreamPropertySocketSecurityAuthenticatesServerCertificate");
CF_EXPORT
void _CFSocketStreamSetAuthenticatesServerCertificateDefault(Boolean shouldAuthenticate) {
CFLog(__kCFLogAssertion, CFSTR("_CFSocketStreamSetAuthenticatesServerCertificateDefault(): This call has been deprecated. Use SetProperty(_kCFStreamPropertySocketSecurityAuthenticatesServerCertificate, kCFBooleanTrue/False)\n"));
}
/* CF_EXPORT */ Boolean
_CFSocketStreamGetAuthenticatesServerCertificateDefault(void) {
CFLog(__kCFLogAssertion, CFSTR("_CFSocketStreamGetAuthenticatesServerCertificateDefault(): This call has been removed as a security risk. Use security properties on individual streams instead.\n"));
return FALSE;
}
/* CF_EXPORT */ void
_CFSocketStreamPairSetAuthenticatesServerCertificate(CFReadStreamRef rStream, CFWriteStreamRef wStream, Boolean authenticates) {
CFBooleanRef value = (!authenticates ? kCFBooleanFalse : kCFBooleanTrue);
if (rStream)
CFReadStreamSetProperty(rStream, _kCFStreamPropertySocketSecurityAuthenticatesServerCertificate, value);
else
CFWriteStreamSetProperty(wStream, _kCFStreamPropertySocketSecurityAuthenticatesServerCertificate, value);
}
// Flags for dyld loading of libraries.
enum {
kTriedToLoad = 0,
kInitialized
};
static struct {
CFLock_t lock;
UInt32 flags;
#if TARGET_OS_WIN32
HMODULE image;
#endif
void (*_CFSocketStreamCreatePair)(CFAllocatorRef, CFStringRef, UInt32, CFSocketNativeHandle, const CFSocketSignature*, CFReadStreamRef*, CFWriteStreamRef*);
CFErrorRef (*_CFErrorCreateWithStreamError)(CFAllocatorRef, CFStreamError*);
CFStreamError (*_CFStreamErrorFromCFError)(CFErrorRef);
} CFNetworkSupport = {
CFLockInit,
0x0,
#if TARGET_OS_WIN32
NULL,
#endif
NULL,
NULL,
NULL
};
#define CFNETWORK_CALL(sym, args) ((CFNetworkSupport.sym)args)
#if TARGET_OS_MAC
#define CFNETWORK_LOAD_SYM(sym) __CFLookupCFNetworkFunction(#sym)
#elif TARGET_OS_WIN32
#define CFNETWORK_LOAD_SYM(sym) (void *)GetProcAddress(CFNetworkSupport.image, #sym)
#endif
static void initializeCFNetworkSupport(void) {
__CFBitSet(CFNetworkSupport.flags, kTriedToLoad);
#if TARGET_OS_MAC
CFNetworkSupport._CFSocketStreamCreatePair = CFNETWORK_LOAD_SYM(_CFSocketStreamCreatePair);
CFNetworkSupport._CFErrorCreateWithStreamError = CFNETWORK_LOAD_SYM(_CFErrorCreateWithStreamError);
CFNetworkSupport._CFStreamErrorFromCFError = CFNETWORK_LOAD_SYM(_CFStreamErrorFromCFError);
#elif TARGET_OS_WIN32
if (!CFNetworkSupport.image) {
#if _DEBUG
CFNetworkSupport.image = GetModuleHandleW(L"CFNetwork_debug.dll");
#else
CFNetworkSupport.image = GetModuleHandleW(L"CFNetwork.dll");
#endif
}
if (!CFNetworkSupport.image) {
// not loaded yet, try to load from the filesystem
char path[MAX_PATH+1];
if (!CFNetworkSupport.image) {
strlcpy(path, (const char *)_CFDLLPath(), sizeof(path));
#if _DEBUG
strlcat(path, "\\CFNetwork_debug.dll", sizeof(path));
#else
strlcat(path, "\\CFNetwork.dll", sizeof(path));
#endif
CFNetworkSupport.image = LoadLibraryA(path);
}
}
if (!CFNetworkSupport.image) {
CFLog(__kCFLogAssertion, CFSTR("CoreFoundation: failed to dynamically load CFNetwork"));
} else {
CFNetworkSupport._CFSocketStreamCreatePair = (CF_SOCKET_STREAM_PAIR)CFNETWORK_LOAD_SYM(_CFSocketStreamCreatePair);
CFNetworkSupport._CFErrorCreateWithStreamError = (CFErrorRef(*)(CFAllocatorRef, CFStreamError *))CFNETWORK_LOAD_SYM(_CFErrorCreateWithStreamError);
CFNetworkSupport._CFStreamErrorFromCFError = (CFStreamError(*)(CFErrorRef))CFNETWORK_LOAD_SYM(_CFStreamErrorFromCFError);
}
#endif
if (!CFNetworkSupport._CFSocketStreamCreatePair) CFLog(__kCFLogAssertion, CFSTR("CoreFoundation: failed to dynamically link symbol _CFSocketStreamCreatePair"));
if (!CFNetworkSupport._CFErrorCreateWithStreamError) CFLog(__kCFLogAssertion, CFSTR("CoreFoundation: failed to dynamically link symbol _CFErrorCreateWithStreamError"));
if (!CFNetworkSupport._CFStreamErrorFromCFError) CFLog(__kCFLogAssertion, CFSTR("CoreFoundation: failed to dynamically link symbol _CFStreamErrorFromCFError"));
__CFBitSet(CFNetworkSupport.flags, kInitialized);
}
static void
createPair(CFAllocatorRef alloc, CFStringRef host, UInt32 port, CFSocketNativeHandle sock, const CFSocketSignature* sig, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream)
{
if (readStream)
*readStream = NULL;
if (writeStream)
*writeStream = NULL;
__CFLock(&(CFNetworkSupport.lock));
if (!__CFBitIsSet(CFNetworkSupport.flags, kTriedToLoad)) initializeCFNetworkSupport();
__CFUnlock(&(CFNetworkSupport.lock));
CFNETWORK_CALL(_CFSocketStreamCreatePair, (alloc, host, port, sock, sig, readStream, writeStream));
}
CF_EXPORT void CFStreamCreatePairWithSocket(CFAllocatorRef alloc, CFSocketNativeHandle sock, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream) {
createPair(alloc, NULL, 0, sock, NULL, readStream, writeStream);
}
CF_EXPORT void CFStreamCreatePairWithSocketToHost(CFAllocatorRef alloc, CFStringRef host, UInt32 port, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream) {
createPair(alloc, host, port, 0, NULL, readStream, writeStream);
}
CF_EXPORT void CFStreamCreatePairWithPeerSocketSignature(CFAllocatorRef alloc, const CFSocketSignature* sig, CFReadStreamRef *readStream, CFWriteStreamRef *writeStream) {
createPair(alloc, NULL, 0, 0, sig, readStream, writeStream);
}
CF_PRIVATE CFStreamError _CFStreamErrorFromError(CFErrorRef error) {
CFStreamError result;
Boolean canUpCall;
__CFLock(&(CFNetworkSupport.lock));
if (!__CFBitIsSet(CFNetworkSupport.flags, kTriedToLoad)) initializeCFNetworkSupport();
canUpCall = (CFNetworkSupport._CFStreamErrorFromCFError != NULL);
__CFUnlock(&(CFNetworkSupport.lock));
if (canUpCall) {
result = CFNETWORK_CALL(_CFStreamErrorFromCFError, (error));
} else {
CFStringRef domain = CFErrorGetDomain(error);
if (CFEqual(domain, kCFErrorDomainPOSIX)) {
result.domain = kCFStreamErrorDomainPOSIX;
} else if (CFEqual(domain, kCFErrorDomainOSStatus)) {
result.domain = kCFStreamErrorDomainMacOSStatus;
} else if (CFEqual(domain, kCFErrorDomainMach)) {
result.domain = 11; // kCFStreamErrorDomainMach, but that symbol is in CFNetwork
} else {
result.domain = kCFStreamErrorDomainCustom;
}
result.error = CFErrorGetCode(error);
}
return result;
}
CF_PRIVATE CFErrorRef _CFStreamCreateErrorFromStreamError(CFAllocatorRef alloc, CFStreamError *streamError) {
CFErrorRef result;
Boolean canUpCall;
__CFLock(&(CFNetworkSupport.lock));
if (!__CFBitIsSet(CFNetworkSupport.flags, kTriedToLoad)) initializeCFNetworkSupport();
canUpCall = (CFNetworkSupport._CFErrorCreateWithStreamError != NULL);
__CFUnlock(&(CFNetworkSupport.lock));
if (canUpCall) {
result = CFNETWORK_CALL(_CFErrorCreateWithStreamError, (alloc, streamError));
} else {
if (streamError->domain == kCFStreamErrorDomainPOSIX) {
return CFErrorCreate(alloc, kCFErrorDomainPOSIX, streamError->error, NULL);
} else if (streamError->domain == kCFStreamErrorDomainMacOSStatus) {
return CFErrorCreate(alloc, kCFErrorDomainOSStatus, streamError->error, NULL);
} else {
CFStringRef key = CFSTR("CFStreamErrorDomainKey");
CFNumberRef value = CFNumberCreate(alloc, kCFNumberCFIndexType, &streamError->domain);
CFDictionaryRef dict = CFDictionaryCreate(alloc, (const void **)(&key), (const void **)(&value), 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
result = CFErrorCreate(alloc, CFSTR("BogusCFStreamErrorCompatibilityDomain"), streamError->error, dict);
CFRelease(value);
CFRelease(dict);
}
}
return result;
}
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