4 * TLS support for CUPS on Windows using SSPI.
6 * Copyright 2010-2014 by Apple Inc.
8 * These coded instructions, statements, and computer programs are the
9 * property of Apple Inc. and are protected by Federal copyright
10 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
11 * which should have been included with this file. If this file is
12 * file is missing or damaged, see the license at "http://www.cups.org/".
14 * This file is subject to the Apple OS-Developed Software exception.
18 * Include necessary headers...
21 #include "debug-private.h"
25 * Include necessary libraries...
28 #pragma comment(lib, "Crypt32.lib")
29 #pragma comment(lib, "Secur32.lib")
30 #pragma comment(lib, "Ws2_32.lib")
37 #ifndef SECURITY_FLAG_IGNORE_UNKNOWN_CA
38 # define SECURITY_FLAG_IGNORE_UNKNOWN_CA 0x00000100 /* Untrusted root */
39 #endif /* SECURITY_FLAG_IGNORE_UNKNOWN_CA */
41 #ifndef SECURITY_FLAG_IGNORE_CERT_CN_INVALID
42 # define SECURITY_FLAG_IGNORE_CERT_CN_INVALID 0x00001000 /* Common name does not match */
43 #endif /* !SECURITY_FLAG_IGNORE_CERT_CN_INVALID */
45 #ifndef SECURITY_FLAG_IGNORE_CERT_DATE_INVALID
46 # define SECURITY_FLAG_IGNORE_CERT_DATE_INVALID 0x00002000 /* Expired X509 Cert. */
47 #endif /* !SECURITY_FLAG_IGNORE_CERT_DATE_INVALID */
53 static _http_sspi_t
*http_sspi_alloc(void);
54 static int http_sspi_client(http_t
*http
, const char *hostname
);
55 static PCCERT_CONTEXT
http_sspi_create_credential(http_credential_t
*cred
);
56 static BOOL
http_sspi_find_credentials(http_t
*http
, const LPWSTR containerName
, const char *common_name
);
57 static void http_sspi_free(_http_sspi_t
*sspi
);
58 static BOOL
http_sspi_make_credentials(_http_sspi_t
*sspi
, const LPWSTR containerName
, const char *common_name
, _http_mode_t mode
, int years
);
59 static int http_sspi_server(http_t
*http
, const char *hostname
);
60 static void http_sspi_set_allows_any_root(_http_sspi_t
*sspi
, BOOL allow
);
61 static void http_sspi_set_allows_expired_certs(_http_sspi_t
*sspi
, BOOL allow
);
62 static const char *http_sspi_strerror(char *buffer
, size_t bufsize
, DWORD code
);
63 static DWORD
http_sspi_verify(PCCERT_CONTEXT cert
, const char *common_name
, DWORD dwCertFlags
);
67 * 'cupsMakeServerCredentials()' - Make a self-signed certificate and private key pair.
72 int /* O - 1 on success, 0 on failure */
73 cupsMakeServerCredentials(
74 const char *path
, /* I - Keychain path or @code NULL@ for default */
75 const char *common_name
, /* I - Common name */
76 int num_alt_names
, /* I - Number of subject alternate names */
77 const char **alt_names
, /* I - Subject Alternate Names */
78 time_t expiration_date
) /* I - Expiration date */
80 _http_sspi_t
*sspi
; /* SSPI data */
81 int ret
; /* Return value */
84 DEBUG_printf(("cupsMakeServerCredentials(path=\"%s\", common_name=\"%s\", num_alt_names=%d, alt_names=%p, expiration_date=%d)", path
, common_name
, num_alt_names
, alt_names
, (int)expiration_date
));
90 sspi
= http_sspi_alloc();
91 ret
= http_sspi_make_credentials(sspi
, L
"ServerContainer", common_name
, _HTTP_MODE_SERVER
, (int)((expiration_date
- time(NULL
) + 86399) / 86400 / 365));
100 * 'cupsSetServerCredentials()' - Set the default server credentials.
102 * Note: The server credentials are used by all threads in the running process.
103 * This function is threadsafe.
108 int /* O - 1 on success, 0 on failure */
109 cupsSetServerCredentials(
110 const char *path
, /* I - Keychain path or @code NULL@ for default */
111 const char *common_name
, /* I - Default common name for server */
112 int auto_create
) /* I - 1 = automatically create self-signed certificates */
114 DEBUG_printf(("cupsSetServerCredentials(path=\"%s\", common_name=\"%s\", auto_create=%d)", path
, common_name
, auto_create
));
125 * 'httpCopyCredentials()' - Copy the credentials associated with the peer in
126 * an encrypted connection.
128 * @since CUPS 1.5/OS X 10.7@
131 int /* O - Status of call (0 = success) */
133 http_t
*http
, /* I - Connection to server */
134 cups_array_t
**credentials
) /* O - Array of credentials */
136 DEBUG_printf(("httpCopyCredentials(http=%p, credentials=%p)", http
, credentials
));
138 if (!http
|| !http
->tls
|| !http
->tls
->remoteCert
|| !credentials
)
146 *credentials
= cupsArrayNew(NULL
, NULL
);
147 httpAddCredential(*credentials
, http
->tls
->remoteCert
->pbCertEncoded
, http
->tls
->remoteCert
->cbCertEncoded
);
154 * '_httpCreateCredentials()' - Create credentials in the internal format.
157 http_tls_credentials_t
/* O - Internal credentials */
158 _httpCreateCredentials(
159 cups_array_t
*credentials
) /* I - Array of credentials */
161 return (http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
)));
166 * 'httpCredentialsAreValidForName()' - Return whether the credentials are valid for the given name.
171 int /* O - 1 if valid, 0 otherwise */
172 httpCredentialsAreValidForName(
173 cups_array_t
*credentials
, /* I - Credentials */
174 const char *common_name
) /* I - Name to check */
176 int valid
= 1; /* Valid name? */
177 PCCERT_CONTEXT cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
179 char cert_name
[1024]; /* Name from certificate */
184 if (CertNameToStr(X509_ASN_ENCODING
, &(cert
->pCertInfo
->Subject
), CERT_SIMPLE_NAME_STR
, cert_name
, sizeof(cert_name
)))
187 * Extract common name at end...
190 char *ptr
= strrchr(cert_name
, ',');
192 _cups_strcpy(cert_name
, ptr
+ 2);
195 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
197 CertFreeCertificateContext(cert
);
200 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
203 * Compare the common names...
206 if (_cups_strcasecmp(common_name
, cert_name
))
209 * Not an exact match for the common name, check for wildcard certs...
212 const char *domain
= strchr(common_name
, '.');
213 /* Domain in common name */
215 if (strncmp(cert_name
, "*.", 2) || !domain
|| _cups_strcasecmp(domain
, cert_name
+ 1))
218 * Not a wildcard match.
221 /* TODO: Check subject alternate names */
231 * 'httpCredentialsGetTrust()' - Return the trust of credentials.
236 http_trust_t
/* O - Level of trust */
237 httpCredentialsGetTrust(
238 cups_array_t
*credentials
, /* I - Credentials */
239 const char *common_name
) /* I - Common name for trust lookup */
241 http_trust_t trust
= HTTP_TRUST_OK
; /* Level of trust */
242 PCCERT_CONTEXT cert
= NULL
; /* Certificate to validate */
243 DWORD certFlags
= 0; /* Cert verification flags */
244 _cups_globals_t
*cg
= _cupsGlobals(); /* Per-thread global data */
248 return (HTTP_TRUST_UNKNOWN
);
250 cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
252 return (HTTP_TRUST_UNKNOWN
);
255 certFlags
|= SECURITY_FLAG_IGNORE_UNKNOWN_CA
;
257 if (cg
->expired_certs
)
258 certFlags
|= SECURITY_FLAG_IGNORE_CERT_DATE_INVALID
;
260 if (!cg
->validate_certs
)
261 certFlags
|= SECURITY_FLAG_IGNORE_CERT_CN_INVALID
;
263 if (http_sspi_verify(cert
, common_name
, certFlags
) != SEC_E_OK
)
264 trust
= HTTP_TRUST_INVALID
;
266 CertFreeCertificateContext(cert
);
273 * 'httpCredentialsGetExpiration()' - Return the expiration date of the credentials.
278 time_t /* O - Expiration date of credentials */
279 httpCredentialsGetExpiration(
280 cups_array_t
*credentials
) /* I - Credentials */
282 time_t expiration_date
= 0; /* Expiration data of credentials */
283 PCCERT_CONTEXT cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
288 SYSTEMTIME systime
; /* System time */
289 struct tm tm
; /* UNIX date/time */
291 FileTimeToSystemTime(&(cert
->pCertInfo
->NotAfter
), &systime
);
293 tm
.tm_year
= systime
.wYear
- 1900;
294 tm
.tm_mon
= systime
.wMonth
- 1;
295 tm
.tm_mday
= systime
.wDay
;
296 tm
.tm_hour
= systime
.wHour
;
297 tm
.tm_min
= systime
.wMinute
;
298 tm
.tm_sec
= systime
.wSecond
;
300 expiration_date
= mktime(&tm
);
302 CertFreeCertificateContext(cert
);
305 return (expiration_date
);
310 * 'httpCredentialsString()' - Return a string representing the credentials.
315 size_t /* O - Total size of credentials string */
316 httpCredentialsString(
317 cups_array_t
*credentials
, /* I - Credentials */
318 char *buffer
, /* I - Buffer or @code NULL@ */
319 size_t bufsize
) /* I - Size of buffer */
321 http_credential_t
*first
= (http_credential_t
*)cupsArrayFirst(credentials
);
322 /* First certificate */
323 PCCERT_CONTEXT cert
; /* Certificate */
326 DEBUG_printf(("httpCredentialsString(credentials=%p, buffer=%p, bufsize=" CUPS_LLFMT
")", credentials
, buffer
, CUPS_LLCAST bufsize
));
331 if (buffer
&& bufsize
> 0)
334 cert
= http_sspi_create_credential(first
);
338 char cert_name
[256]; /* Common name */
339 SYSTEMTIME systime
; /* System time */
340 struct tm tm
; /* UNIX date/time */
341 time_t expiration
; /* Expiration date of cert */
342 _cups_md5_state_t md5_state
; /* MD5 state */
343 unsigned char md5_digest
[16]; /* MD5 result */
345 FileTimeToSystemTime(&(cert
->pCertInfo
->NotAfter
), &systime
);
347 tm
.tm_year
= systime
.wYear
- 1900;
348 tm
.tm_mon
= systime
.wMonth
- 1;
349 tm
.tm_mday
= systime
.wDay
;
350 tm
.tm_hour
= systime
.wHour
;
351 tm
.tm_min
= systime
.wMinute
;
352 tm
.tm_sec
= systime
.wSecond
;
354 expiration
= mktime(&tm
);
356 if (CertNameToStr(X509_ASN_ENCODING
, &(cert
->pCertInfo
->Subject
), CERT_SIMPLE_NAME_STR
, cert_name
, sizeof(cert_name
)))
359 * Extract common name at end...
362 char *ptr
= strrchr(cert_name
, ',');
364 _cups_strcpy(cert_name
, ptr
+ 2);
367 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
369 _cupsMD5Init(&md5_state
);
370 _cupsMD5Append(&md5_state
, first
->data
, (int)first
->datalen
);
371 _cupsMD5Finish(&md5_state
, md5_digest
);
373 snprintf(buffer
, bufsize
, "%s / %s / %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X", cert_name
, httpGetDateString(expiration
), md5_digest
[0], md5_digest
[1], md5_digest
[2], md5_digest
[3], md5_digest
[4], md5_digest
[5], md5_digest
[6], md5_digest
[7], md5_digest
[8], md5_digest
[9], md5_digest
[10], md5_digest
[11], md5_digest
[12], md5_digest
[13], md5_digest
[14], md5_digest
[15]);
375 CertFreeCertificateContext(cert
);
378 DEBUG_printf(("1httpCredentialsString: Returning \"%s\".", buffer
));
380 return (strlen(buffer
));
385 * '_httpFreeCredentials()' - Free internal credentials.
389 _httpFreeCredentials(
390 http_tls_credentials_t credentials
) /* I - Internal credentials */
395 CertFreeCertificateContext(credentials
);
400 * 'httpLoadCredentials()' - Load X.509 credentials from a keychain file.
405 int /* O - 0 on success, -1 on error */
407 const char *path
, /* I - Keychain path or @code NULL@ for default */
408 cups_array_t
**credentials
, /* IO - Credentials */
409 const char *common_name
) /* I - Common name for credentials */
411 HCERTSTORE store
= NULL
; /* Certificate store */
412 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
413 DWORD dwSize
= 0; /* 32 bit size */
414 PBYTE p
= NULL
; /* Temporary storage */
415 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
416 /* Handle to a CSP */
417 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
419 char error
[1024]; /* Error message buffer */
423 DEBUG_printf(("httpLoadCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path
, credentials
, common_name
));
433 DEBUG_puts("1httpLoadCredentials: NULL credentials pointer, returning -1.");
439 DEBUG_puts("1httpLoadCredentials: Bad common name, returning -1.");
443 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
445 if (GetLastError() == NTE_EXISTS
)
447 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
449 DEBUG_printf(("1httpLoadCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
455 store
= CertOpenStore(CERT_STORE_PROV_SYSTEM
, X509_ASN_ENCODING
|PKCS_7_ASN_ENCODING
, hProv
, CERT_SYSTEM_STORE_LOCAL_MACHINE
| CERT_STORE_NO_CRYPT_RELEASE_FLAG
| CERT_STORE_OPEN_EXISTING_FLAG
, L
"MY");
459 DEBUG_printf(("1httpLoadCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
465 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
467 DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
471 p
= (PBYTE
)malloc(dwSize
);
475 DEBUG_printf(("1httpLoadCredentials: malloc failed for %d bytes.", dwSize
));
479 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
481 DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
488 storedContext
= CertFindCertificateInStore(store
, X509_ASN_ENCODING
| PKCS_7_ASN_ENCODING
, 0, CERT_FIND_SUBJECT_NAME
, &sib
, NULL
);
492 DEBUG_printf(("1httpLoadCredentials: Unable to find credentials for \"%s\".", common_name
));
496 *credentials
= cupsArrayNew(NULL
, NULL
);
497 httpAddCredential(*credentials
, storedContext
->pbCertEncoded
, storedContext
->cbCertEncoded
);
506 CertFreeCertificateContext(storedContext
);
512 CertCloseStore(store
, 0);
515 CryptReleaseContext(hProv
, 0);
517 DEBUG_printf(("1httpLoadCredentials: Returning %d.", *credentials
? 0 : -1));
519 return (*credentials
? 0 : -1);
524 * 'httpSaveCredentials()' - Save X.509 credentials to a keychain file.
529 int /* O - -1 on error, 0 on success */
531 const char *path
, /* I - Keychain path or @code NULL@ for default */
532 cups_array_t
*credentials
, /* I - Credentials */
533 const char *common_name
) /* I - Common name for credentials */
535 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
536 HCERTSTORE store
= NULL
; /* Certificate store */
537 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
538 PCCERT_CONTEXT createdContext
= NULL
; /* Context created by us */
539 DWORD dwSize
= 0; /* 32 bit size */
540 PBYTE p
= NULL
; /* Temporary storage */
541 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
542 /* Handle to a CSP */
543 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
544 int ret
= -1; /* Return value */
546 char error
[1024]; /* Error message buffer */
550 DEBUG_printf(("httpSaveCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path
, credentials
, common_name
));
556 DEBUG_puts("1httpSaveCredentials: Bad common name, returning -1.");
560 createdContext
= http_sspi_create_credential(credentials
);
563 DEBUG_puts("1httpSaveCredentials: Bad credentials, returning -1.");
567 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
569 if (GetLastError() == NTE_EXISTS
)
571 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
573 DEBUG_printf(("1httpSaveCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
579 store
= CertOpenStore(CERT_STORE_PROV_SYSTEM
, X509_ASN_ENCODING
|PKCS_7_ASN_ENCODING
, hProv
, CERT_SYSTEM_STORE_LOCAL_MACHINE
| CERT_STORE_NO_CRYPT_RELEASE_FLAG
| CERT_STORE_OPEN_EXISTING_FLAG
, L
"MY");
583 DEBUG_printf(("1httpSaveCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
589 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
591 DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
595 p
= (PBYTE
)malloc(dwSize
);
599 DEBUG_printf(("1httpSaveCredentials: malloc failed for %d bytes.", dwSize
));
603 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
605 DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
610 * Add the created context to the named store, and associate it with the named
614 if (!CertAddCertificateContextToStore(store
, createdContext
, CERT_STORE_ADD_REPLACE_EXISTING
, &storedContext
))
616 DEBUG_printf(("1httpSaveCredentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
620 ZeroMemory(&ckp
, sizeof(ckp
));
621 ckp
.pwszContainerName
= L
"RememberedContainer";
622 ckp
.pwszProvName
= MS_DEF_PROV_W
;
623 ckp
.dwProvType
= PROV_RSA_FULL
;
624 ckp
.dwFlags
= CRYPT_MACHINE_KEYSET
;
625 ckp
.dwKeySpec
= AT_KEYEXCHANGE
;
627 if (!CertSetCertificateContextProperty(storedContext
, CERT_KEY_PROV_INFO_PROP_ID
, 0, &ckp
))
629 DEBUG_printf(("1httpSaveCredentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
642 CertFreeCertificateContext(createdContext
);
645 CertFreeCertificateContext(storedContext
);
651 CertCloseStore(store
, 0);
654 CryptReleaseContext(hProv
, 0);
656 DEBUG_printf(("1httpSaveCredentials: Returning %d.", ret
));
662 * '_httpTLSInitialize()' - Initialize the TLS stack.
666 _httpTLSInitialize(void)
675 * '_httpTLSPending()' - Return the number of pending TLS-encrypted bytes.
678 size_t /* O - Bytes available */
679 _httpTLSPending(http_t
*http
) /* I - HTTP connection */
682 return (http
->tls
->readBufferUsed
);
689 * '_httpTLSRead()' - Read from a SSL/TLS connection.
692 int /* O - Bytes read */
693 _httpTLSRead(http_t
*http
, /* I - HTTP connection */
694 char *buf
, /* I - Buffer to store data */
695 int len
) /* I - Length of buffer */
697 int i
; /* Looping var */
698 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
699 SecBufferDesc message
; /* Array of SecBuffer struct */
700 SecBuffer buffers
[4] = { 0 }; /* Security package buffer */
701 int num
= 0; /* Return value */
702 PSecBuffer pDataBuffer
; /* Data buffer */
703 PSecBuffer pExtraBuffer
; /* Excess data buffer */
704 SECURITY_STATUS scRet
; /* SSPI status */
707 DEBUG_printf(("4_httpTLSRead(http=%p, buf=%p, len=%d)", http
, buf
, len
));
710 * If there are bytes that have already been decrypted and have not yet been
711 * read, return those...
714 if (sspi
->readBufferUsed
> 0)
716 int bytesToCopy
= min(sspi
->readBufferUsed
, len
);
717 /* Number of bytes to copy */
719 memcpy(buf
, sspi
->readBuffer
, bytesToCopy
);
720 sspi
->readBufferUsed
-= bytesToCopy
;
722 if (sspi
->readBufferUsed
> 0)
723 memmove(sspi
->readBuffer
, sspi
->readBuffer
+ bytesToCopy
, sspi
->readBufferUsed
);
725 DEBUG_printf(("5_httpTLSRead: Returning %d bytes previously decrypted.", bytesToCopy
));
727 return (bytesToCopy
);
731 * Initialize security buffer structs
734 message
.ulVersion
= SECBUFFER_VERSION
;
735 message
.cBuffers
= 4;
736 message
.pBuffers
= buffers
;
741 * If there is not enough space in the buffer, then increase its size...
744 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
746 BYTE
*temp
; /* New buffer */
748 if (sspi
->decryptBufferLength
>= 262144)
750 WSASetLastError(E_OUTOFMEMORY
);
751 DEBUG_puts("_httpTLSRead: Decryption buffer too large (>256k)");
755 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
757 DEBUG_printf(("_httpTLSRead: Unable to allocate %d byte decryption buffer.", sspi
->decryptBufferLength
+ 4096));
758 WSASetLastError(E_OUTOFMEMORY
);
762 sspi
->decryptBufferLength
+= 4096;
763 sspi
->decryptBuffer
= temp
;
765 DEBUG_printf(("_httpTLSRead: Resized decryption buffer to %d bytes.", sspi
->decryptBufferLength
));
768 buffers
[0].pvBuffer
= sspi
->decryptBuffer
;
769 buffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
770 buffers
[0].BufferType
= SECBUFFER_DATA
;
771 buffers
[1].BufferType
= SECBUFFER_EMPTY
;
772 buffers
[2].BufferType
= SECBUFFER_EMPTY
;
773 buffers
[3].BufferType
= SECBUFFER_EMPTY
;
775 DEBUG_printf(("5_httpTLSRead: decryptBufferUsed=%d", sspi
->decryptBufferUsed
));
777 scRet
= DecryptMessage(&sspi
->context
, &message
, 0, NULL
);
779 if (scRet
== SEC_E_INCOMPLETE_MESSAGE
)
781 num
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
784 DEBUG_printf(("5_httpTLSRead: recv failed: %d", WSAGetLastError()));
789 DEBUG_puts("5_httpTLSRead: Server disconnected.");
793 DEBUG_printf(("5_httpTLSRead: Read %d bytes into decryption buffer.", num
));
795 sspi
->decryptBufferUsed
+= num
;
798 while (scRet
== SEC_E_INCOMPLETE_MESSAGE
);
800 if (scRet
== SEC_I_CONTEXT_EXPIRED
)
802 DEBUG_puts("5_httpTLSRead: Context expired.");
803 WSASetLastError(WSAECONNRESET
);
806 else if (scRet
!= SEC_E_OK
)
808 DEBUG_printf(("5_httpTLSRead: DecryptMessage failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
809 WSASetLastError(WSASYSCALLFAILURE
);
814 * The decryption worked. Now, locate data buffer.
820 for (i
= 1; i
< 4; i
++)
822 if (buffers
[i
].BufferType
== SECBUFFER_DATA
)
823 pDataBuffer
= &buffers
[i
];
824 else if (!pExtraBuffer
&& (buffers
[i
].BufferType
== SECBUFFER_EXTRA
))
825 pExtraBuffer
= &buffers
[i
];
829 * If a data buffer is found, then copy the decrypted bytes to the passed-in
835 int bytesToCopy
= min((int)pDataBuffer
->cbBuffer
, len
);
836 /* Number of bytes to copy into buf */
837 int bytesToSave
= pDataBuffer
->cbBuffer
- bytesToCopy
;
838 /* Number of bytes to save in our read buffer */
841 memcpy(buf
, pDataBuffer
->pvBuffer
, bytesToCopy
);
844 * If there are more decrypted bytes than can be copied to the passed in
845 * buffer, then save them...
850 if ((sspi
->readBufferLength
- sspi
->readBufferUsed
) < bytesToSave
)
852 BYTE
*temp
; /* New buffer pointer */
854 if ((temp
= realloc(sspi
->readBuffer
, sspi
->readBufferUsed
+ bytesToSave
)) == NULL
)
856 DEBUG_printf(("_httpTLSRead: Unable to allocate %d bytes.", sspi
->readBufferUsed
+ bytesToSave
));
857 WSASetLastError(E_OUTOFMEMORY
);
861 sspi
->readBufferLength
= sspi
->readBufferUsed
+ bytesToSave
;
862 sspi
->readBuffer
= temp
;
865 memcpy(((BYTE
*)sspi
->readBuffer
) + sspi
->readBufferUsed
, ((BYTE
*)pDataBuffer
->pvBuffer
) + bytesToCopy
, bytesToSave
);
867 sspi
->readBufferUsed
+= bytesToSave
;
874 DEBUG_puts("_httpTLSRead: Unable to find data buffer.");
875 WSASetLastError(WSASYSCALLFAILURE
);
880 * If the decryption process left extra bytes, then save those back in
881 * decryptBuffer. They will be processed the next time through the loop.
886 memmove(sspi
->decryptBuffer
, pExtraBuffer
->pvBuffer
, pExtraBuffer
->cbBuffer
);
887 sspi
->decryptBufferUsed
= pExtraBuffer
->cbBuffer
;
891 sspi
->decryptBufferUsed
= 0;
899 * '_httpTLSStart()' - Set up SSL/TLS support on a connection.
902 int /* O - 0 on success, -1 on failure */
903 _httpTLSStart(http_t
*http
) /* I - HTTP connection */
905 char hostname
[256], /* Hostname */
906 *hostptr
; /* Pointer into hostname */
909 DEBUG_printf(("7_httpTLSStart(http=%p)", http
));
911 if ((http
->tls
= http_sspi_alloc()) == NULL
)
914 if (http
->mode
== _HTTP_MODE_CLIENT
)
917 * Client: determine hostname...
920 if (httpAddrLocalhost(http
->hostaddr
))
922 strlcpy(hostname
, "localhost", sizeof(hostname
));
927 * Otherwise make sure the hostname we have does not end in a trailing dot.
930 strlcpy(hostname
, http
->hostname
, sizeof(hostname
));
931 if ((hostptr
= hostname
+ strlen(hostname
) - 1) >= hostname
&&
936 return (http_sspi_client(http
, hostname
));
941 * Server: determine hostname to use...
944 if (http
->fields
[HTTP_FIELD_HOST
][0])
947 * Use hostname for TLS upgrade...
950 strlcpy(hostname
, http
->fields
[HTTP_FIELD_HOST
], sizeof(hostname
));
955 * Resolve hostname from connection address...
958 http_addr_t addr
; /* Connection address */
959 socklen_t addrlen
; /* Length of address */
961 addrlen
= sizeof(addr
);
962 if (getsockname(http
->fd
, (struct sockaddr
*)&addr
, &addrlen
))
964 DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno
)));
967 else if (httpAddrLocalhost(&addr
))
971 httpAddrLookup(&addr
, hostname
, sizeof(hostname
));
972 DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname
));
976 return (http_sspi_server(http
, hostname
));
982 * '_httpTLSStop()' - Shut down SSL/TLS on a connection.
986 _httpTLSStop(http_t
*http
) /* I - HTTP connection */
988 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
991 if (sspi
->contextInitialized
&& http
->fd
>= 0)
993 SecBufferDesc message
; /* Array of SecBuffer struct */
994 SecBuffer buffers
[1] = { 0 };
995 /* Security package buffer */
996 DWORD dwType
; /* Type */
997 DWORD status
; /* Status */
1000 * Notify schannel that we are about to close the connection.
1003 dwType
= SCHANNEL_SHUTDOWN
;
1005 buffers
[0].pvBuffer
= &dwType
;
1006 buffers
[0].BufferType
= SECBUFFER_TOKEN
;
1007 buffers
[0].cbBuffer
= sizeof(dwType
);
1009 message
.cBuffers
= 1;
1010 message
.pBuffers
= buffers
;
1011 message
.ulVersion
= SECBUFFER_VERSION
;
1013 status
= ApplyControlToken(&sspi
->context
, &message
);
1015 if (SUCCEEDED(status
))
1017 PBYTE pbMessage
; /* Message buffer */
1018 DWORD cbMessage
; /* Message buffer count */
1019 DWORD cbData
; /* Data count */
1020 DWORD dwSSPIFlags
; /* SSL attributes we requested */
1021 DWORD dwSSPIOutFlags
; /* SSL attributes we received */
1022 TimeStamp tsExpiry
; /* Time stamp */
1024 dwSSPIFlags
= ASC_REQ_SEQUENCE_DETECT
|
1025 ASC_REQ_REPLAY_DETECT
|
1026 ASC_REQ_CONFIDENTIALITY
|
1027 ASC_REQ_EXTENDED_ERROR
|
1028 ASC_REQ_ALLOCATE_MEMORY
|
1031 buffers
[0].pvBuffer
= NULL
;
1032 buffers
[0].BufferType
= SECBUFFER_TOKEN
;
1033 buffers
[0].cbBuffer
= 0;
1035 message
.cBuffers
= 1;
1036 message
.pBuffers
= buffers
;
1037 message
.ulVersion
= SECBUFFER_VERSION
;
1039 status
= AcceptSecurityContext(&sspi
->creds
, &sspi
->context
, NULL
,
1040 dwSSPIFlags
, SECURITY_NATIVE_DREP
, NULL
,
1041 &message
, &dwSSPIOutFlags
, &tsExpiry
);
1043 if (SUCCEEDED(status
))
1045 pbMessage
= buffers
[0].pvBuffer
;
1046 cbMessage
= buffers
[0].cbBuffer
;
1049 * Send the close notify message to the client.
1052 if (pbMessage
&& cbMessage
)
1054 cbData
= send(http
->fd
, pbMessage
, cbMessage
, 0);
1055 if ((cbData
== SOCKET_ERROR
) || (cbData
== 0))
1057 status
= WSAGetLastError();
1058 DEBUG_printf(("_httpTLSStop: sending close notify failed: %d", status
));
1062 FreeContextBuffer(pbMessage
);
1068 DEBUG_printf(("_httpTLSStop: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), status
)));
1073 DEBUG_printf(("_httpTLSStop: ApplyControlToken failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), status
)));
1077 http_sspi_free(sspi
);
1084 * '_httpTLSWrite()' - Write to a SSL/TLS connection.
1087 int /* O - Bytes written */
1088 _httpTLSWrite(http_t
*http
, /* I - HTTP connection */
1089 const char *buf
, /* I - Buffer holding data */
1090 int len
) /* I - Length of buffer */
1092 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1093 SecBufferDesc message
; /* Array of SecBuffer struct */
1094 SecBuffer buffers
[4] = { 0 }; /* Security package buffer */
1095 int bufferLen
; /* Buffer length */
1096 int bytesLeft
; /* Bytes left to write */
1097 const char *bufptr
; /* Pointer into buffer */
1098 int num
= 0; /* Return value */
1101 bufferLen
= sspi
->streamSizes
.cbMaximumMessage
+ sspi
->streamSizes
.cbHeader
+ sspi
->streamSizes
.cbTrailer
;
1103 if (bufferLen
> sspi
->writeBufferLength
)
1105 BYTE
*temp
; /* New buffer pointer */
1107 if ((temp
= (BYTE
*)realloc(sspi
->writeBuffer
, bufferLen
)) == NULL
)
1109 DEBUG_printf(("_httpTLSWrite: Unable to allocate buffer of %d bytes.", bufferLen
));
1110 WSASetLastError(E_OUTOFMEMORY
);
1114 sspi
->writeBuffer
= temp
;
1115 sspi
->writeBufferLength
= bufferLen
;
1123 int chunk
= min((int)sspi
->streamSizes
.cbMaximumMessage
, bytesLeft
);
1124 /* Size of data to write */
1125 SECURITY_STATUS scRet
; /* SSPI status */
1128 * Copy user data into the buffer, starting just past the header...
1131 memcpy(sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
, bufptr
, chunk
);
1134 * Setup the SSPI buffers
1137 message
.ulVersion
= SECBUFFER_VERSION
;
1138 message
.cBuffers
= 4;
1139 message
.pBuffers
= buffers
;
1141 buffers
[0].pvBuffer
= sspi
->writeBuffer
;
1142 buffers
[0].cbBuffer
= sspi
->streamSizes
.cbHeader
;
1143 buffers
[0].BufferType
= SECBUFFER_STREAM_HEADER
;
1144 buffers
[1].pvBuffer
= sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
;
1145 buffers
[1].cbBuffer
= (unsigned long) chunk
;
1146 buffers
[1].BufferType
= SECBUFFER_DATA
;
1147 buffers
[2].pvBuffer
= sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
+ chunk
;
1148 buffers
[2].cbBuffer
= sspi
->streamSizes
.cbTrailer
;
1149 buffers
[2].BufferType
= SECBUFFER_STREAM_TRAILER
;
1150 buffers
[3].BufferType
= SECBUFFER_EMPTY
;
1156 scRet
= EncryptMessage(&sspi
->context
, 0, &message
, 0);
1160 DEBUG_printf(("_httpTLSWrite: EncryptMessage failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1161 WSASetLastError(WSASYSCALLFAILURE
);
1166 * Send the data. Remember the size of the total data to send is the size
1167 * of the header, the size of the data the caller passed in and the size
1171 num
= send(http
->fd
, sspi
->writeBuffer
, buffers
[0].cbBuffer
+ buffers
[1].cbBuffer
+ buffers
[2].cbBuffer
, 0);
1175 DEBUG_printf(("_httpTLSWrite: send failed: %ld", WSAGetLastError()));
1189 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
1192 static int /* O - 0 on success, -1 on failure */
1193 http_setup_ssl(http_t
*http
) /* I - Connection to server */
1195 char hostname
[256], /* Hostname */
1196 *hostptr
; /* Pointer into hostname */
1198 TCHAR username
[256]; /* Username returned from GetUserName() */
1199 TCHAR commonName
[256];/* Common name for certificate */
1200 DWORD dwSize
; /* 32 bit size */
1203 DEBUG_printf(("7http_setup_ssl(http=%p)", http
));
1206 * Get the hostname to use for SSL...
1209 if (httpAddrLocalhost(http
->hostaddr
))
1211 strlcpy(hostname
, "localhost", sizeof(hostname
));
1216 * Otherwise make sure the hostname we have does not end in a trailing dot.
1219 strlcpy(hostname
, http
->hostname
, sizeof(hostname
));
1220 if ((hostptr
= hostname
+ strlen(hostname
) - 1) >= hostname
&&
1225 http
->tls
= http_sspi_alloc();
1229 _cupsSetHTTPError(HTTP_STATUS_ERROR
);
1233 dwSize
= sizeof(username
) / sizeof(TCHAR
);
1234 GetUserName(username
, &dwSize
);
1235 _sntprintf_s(commonName
, sizeof(commonName
) / sizeof(TCHAR
),
1236 sizeof(commonName
) / sizeof(TCHAR
), TEXT("CN=%s"), username
);
1238 if (!_sspiGetCredentials(http
->tls
, L
"ClientContainer",
1241 _sspiFree(http
->tls
);
1245 http
->status
= HTTP_STATUS_ERROR
;
1247 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
,
1248 _("Unable to establish a secure connection to host."), 1);
1253 _sspiSetAllowsAnyRoot(http
->tls
, TRUE
);
1254 _sspiSetAllowsExpiredCerts(http
->tls
, TRUE
);
1256 if (!_sspiConnect(http
->tls
, hostname
))
1258 _sspiFree(http
->tls
);
1262 http
->status
= HTTP_STATUS_ERROR
;
1264 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
,
1265 _("Unable to establish a secure connection to host."), 1);
1276 * 'http_sspi_alloc()' - Allocate SSPI object.
1279 static _http_sspi_t
* /* O - New SSPI/SSL object */
1280 http_sspi_alloc(void)
1282 return ((_http_sspi_t
*)calloc(sizeof(_http_sspi_t
), 1));
1287 * 'http_sspi_client()' - Negotiate a TLS connection as a client.
1290 static int /* O - 0 on success, -1 on failure */
1291 http_sspi_client(http_t
*http
, /* I - Client connection */
1292 const char *hostname
) /* I - Server hostname */
1294 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1295 DWORD dwSize
; /* Size for buffer */
1296 DWORD dwSSPIFlags
; /* SSL connection attributes we want */
1297 DWORD dwSSPIOutFlags
; /* SSL connection attributes we got */
1298 TimeStamp tsExpiry
; /* Time stamp */
1299 SECURITY_STATUS scRet
; /* Status */
1300 int cbData
; /* Data count */
1301 SecBufferDesc inBuffer
; /* Array of SecBuffer structs */
1302 SecBuffer inBuffers
[2]; /* Security package buffer */
1303 SecBufferDesc outBuffer
; /* Array of SecBuffer structs */
1304 SecBuffer outBuffers
[1]; /* Security package buffer */
1305 int ret
= 0; /* Return value */
1306 char username
[1024], /* Current username */
1307 common_name
[1024]; /* CN=username */
1310 DEBUG_printf(("4http_sspi_client(http=%p, hostname=\"%s\")", http
, hostname
));
1312 dwSSPIFlags
= ISC_REQ_SEQUENCE_DETECT
|
1313 ISC_REQ_REPLAY_DETECT
|
1314 ISC_REQ_CONFIDENTIALITY
|
1315 ISC_RET_EXTENDED_ERROR
|
1316 ISC_REQ_ALLOCATE_MEMORY
|
1320 * Lookup the client certificate...
1323 dwSize
= sizeof(username
);
1324 GetUserName(username
, &dwSize
);
1325 snprintf(common_name
, sizeof(common_name
), "CN=%s", username
);
1327 if (!http_sspi_find_credentials(http
, L
"ClientContainer", common_name
))
1328 if (!http_sspi_make_credentials(http
->tls
, L
"ClientContainer", common_name
, _HTTP_MODE_CLIENT
, 10))
1330 DEBUG_puts("5http_sspi_client: Unable to get client credentials.");
1335 * Initiate a ClientHello message and generate a token.
1338 outBuffers
[0].pvBuffer
= NULL
;
1339 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1340 outBuffers
[0].cbBuffer
= 0;
1342 outBuffer
.cBuffers
= 1;
1343 outBuffer
.pBuffers
= outBuffers
;
1344 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
1346 scRet
= InitializeSecurityContext(&sspi
->creds
, NULL
, TEXT(""), dwSSPIFlags
, 0, SECURITY_NATIVE_DREP
, NULL
, 0, &sspi
->context
, &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
1348 if (scRet
!= SEC_I_CONTINUE_NEEDED
)
1350 DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(1) failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1355 * Send response to server if there is one.
1358 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
1360 if ((cbData
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0)) <= 0)
1362 DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError()));
1363 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1364 DeleteSecurityContext(&sspi
->context
);
1368 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData
));
1370 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1371 outBuffers
[0].pvBuffer
= NULL
;
1374 dwSSPIFlags
= ISC_REQ_MANUAL_CRED_VALIDATION
|
1375 ISC_REQ_SEQUENCE_DETECT
|
1376 ISC_REQ_REPLAY_DETECT
|
1377 ISC_REQ_CONFIDENTIALITY
|
1378 ISC_RET_EXTENDED_ERROR
|
1379 ISC_REQ_ALLOCATE_MEMORY
|
1382 sspi
->decryptBufferUsed
= 0;
1385 * Loop until the handshake is finished or an error occurs.
1388 scRet
= SEC_I_CONTINUE_NEEDED
;
1390 while(scRet
== SEC_I_CONTINUE_NEEDED
||
1391 scRet
== SEC_E_INCOMPLETE_MESSAGE
||
1392 scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
1394 if (sspi
->decryptBufferUsed
== 0 || scRet
== SEC_E_INCOMPLETE_MESSAGE
)
1396 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
1398 BYTE
*temp
; /* New buffer */
1400 if (sspi
->decryptBufferLength
>= 262144)
1402 WSASetLastError(E_OUTOFMEMORY
);
1403 DEBUG_puts("5http_sspi_client: Decryption buffer too large (>256k)");
1407 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
1409 DEBUG_printf(("5http_sspi_client: Unable to allocate %d byte buffer.", sspi
->decryptBufferLength
+ 4096));
1410 WSASetLastError(E_OUTOFMEMORY
);
1414 sspi
->decryptBufferLength
+= 4096;
1415 sspi
->decryptBuffer
= temp
;
1418 cbData
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
1422 DEBUG_printf(("5http_sspi_client: recv failed: %d", WSAGetLastError()));
1425 else if (cbData
== 0)
1427 DEBUG_printf(("5http_sspi_client: Server unexpectedly disconnected."));
1431 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data received", cbData
));
1433 sspi
->decryptBufferUsed
+= cbData
;
1437 * Set up the input buffers. Buffer 0 is used to pass in data received from
1438 * the server. Schannel will consume some or all of this. Leftover data
1439 * (if any) will be placed in buffer 1 and given a buffer type of
1443 inBuffers
[0].pvBuffer
= sspi
->decryptBuffer
;
1444 inBuffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
1445 inBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1447 inBuffers
[1].pvBuffer
= NULL
;
1448 inBuffers
[1].cbBuffer
= 0;
1449 inBuffers
[1].BufferType
= SECBUFFER_EMPTY
;
1451 inBuffer
.cBuffers
= 2;
1452 inBuffer
.pBuffers
= inBuffers
;
1453 inBuffer
.ulVersion
= SECBUFFER_VERSION
;
1456 * Set up the output buffers. These are initialized to NULL so as to make it
1457 * less likely we'll attempt to free random garbage later.
1460 outBuffers
[0].pvBuffer
= NULL
;
1461 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1462 outBuffers
[0].cbBuffer
= 0;
1464 outBuffer
.cBuffers
= 1;
1465 outBuffer
.pBuffers
= outBuffers
;
1466 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
1469 * Call InitializeSecurityContext.
1472 scRet
= InitializeSecurityContext(&sspi
->creds
, &sspi
->context
, NULL
, dwSSPIFlags
, 0, SECURITY_NATIVE_DREP
, &inBuffer
, 0, NULL
, &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
1475 * If InitializeSecurityContext was successful (or if the error was one of
1476 * the special extended ones), send the contents of the output buffer to the
1480 if (scRet
== SEC_E_OK
||
1481 scRet
== SEC_I_CONTINUE_NEEDED
||
1482 FAILED(scRet
) && (dwSSPIOutFlags
& ISC_RET_EXTENDED_ERROR
))
1484 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
1486 cbData
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0);
1490 DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError()));
1491 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1492 DeleteSecurityContext(&sspi
->context
);
1496 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData
));
1499 * Free output buffer.
1502 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1503 outBuffers
[0].pvBuffer
= NULL
;
1508 * If InitializeSecurityContext returned SEC_E_INCOMPLETE_MESSAGE, then we
1509 * need to read more data from the server and try again.
1512 if (scRet
== SEC_E_INCOMPLETE_MESSAGE
)
1516 * If InitializeSecurityContext returned SEC_E_OK, then the handshake
1517 * completed successfully.
1520 if (scRet
== SEC_E_OK
)
1523 * If the "extra" buffer contains data, this is encrypted application
1524 * protocol layer stuff. It needs to be saved. The application layer will
1525 * later decrypt it with DecryptMessage.
1528 DEBUG_puts("5http_sspi_client: Handshake was successful.");
1530 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
1532 memmove(sspi
->decryptBuffer
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
, inBuffers
[1].cbBuffer
);
1534 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
1536 DEBUG_printf(("5http_sspi_client: %d bytes of app data was bundled with handshake data", sspi
->decryptBufferUsed
));
1539 sspi
->decryptBufferUsed
= 0;
1549 * Check for fatal error.
1554 DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(2) failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1560 * If InitializeSecurityContext returned SEC_I_INCOMPLETE_CREDENTIALS,
1561 * then the server just requested client authentication.
1564 if (scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
1570 DEBUG_printf(("5http_sspi_client: server requested client credentials."));
1576 * Copy any leftover data from the "extra" buffer, and go around again.
1579 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
1581 memmove(sspi
->decryptBuffer
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
, inBuffers
[1].cbBuffer
);
1583 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
1587 sspi
->decryptBufferUsed
= 0;
1594 * Success! Get the server cert
1597 sspi
->contextInitialized
= TRUE
;
1599 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_REMOTE_CERT_CONTEXT
, (VOID
*)&(sspi
->remoteCert
));
1601 if (scRet
!= SEC_E_OK
)
1603 DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_REMOTE_CERT_CONTEXT): %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1608 * Find out how big the header/trailer will be:
1611 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_STREAM_SIZES
, &sspi
->streamSizes
);
1613 if (scRet
!= SEC_E_OK
)
1615 DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_STREAM_SIZES): %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1625 * 'http_sspi_create_credential()' - Create an SSPI certificate context.
1628 static PCCERT_CONTEXT
/* O - Certificate context */
1629 http_sspi_create_credential(
1630 http_credential_t
*cred
) /* I - Credential */
1633 return (CertCreateCertificateContext(X509_ASN_ENCODING
, cred
->data
, cred
->datalen
));
1640 * 'http_sspi_find_credentials()' - Retrieve a TLS certificate from the system store.
1643 static BOOL
/* O - 1 on success, 0 on failure */
1644 http_sspi_find_credentials(
1645 http_t
*http
, /* I - HTTP connection */
1646 const LPWSTR container
, /* I - Cert container name */
1647 const char *common_name
) /* I - Common name of certificate */
1649 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1650 HCERTSTORE store
= NULL
; /* Certificate store */
1651 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
1652 DWORD dwSize
= 0; /* 32 bit size */
1653 PBYTE p
= NULL
; /* Temporary storage */
1654 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
1655 /* Handle to a CSP */
1656 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
1657 SCHANNEL_CRED SchannelCred
; /* Schannel credential data */
1658 TimeStamp tsExpiry
; /* Time stamp */
1659 SECURITY_STATUS Status
; /* Status */
1660 BOOL ok
= TRUE
; /* Return value */
1663 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
1665 if (GetLastError() == NTE_EXISTS
)
1667 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
1669 DEBUG_printf(("5http_sspi_find_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1676 store
= CertOpenStore(CERT_STORE_PROV_SYSTEM
, X509_ASN_ENCODING
|PKCS_7_ASN_ENCODING
, hProv
, CERT_SYSTEM_STORE_LOCAL_MACHINE
| CERT_STORE_NO_CRYPT_RELEASE_FLAG
| CERT_STORE_OPEN_EXISTING_FLAG
, L
"MY");
1680 DEBUG_printf(("5http_sspi_find_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1687 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
1689 DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1694 p
= (PBYTE
)malloc(dwSize
);
1698 DEBUG_printf(("5http_sspi_find_credentials: malloc failed for %d bytes.", dwSize
));
1703 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
1705 DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1710 sib
.cbData
= dwSize
;
1713 storedContext
= CertFindCertificateInStore(store
, X509_ASN_ENCODING
| PKCS_7_ASN_ENCODING
, 0, CERT_FIND_SUBJECT_NAME
, &sib
, NULL
);
1717 DEBUG_printf(("5http_sspi_find_credentials: Unable to find credentials for \"%s\".", common_name
));
1722 ZeroMemory(&SchannelCred
, sizeof(SchannelCred
));
1724 SchannelCred
.dwVersion
= SCHANNEL_CRED_VERSION
;
1725 SchannelCred
.cCreds
= 1;
1726 SchannelCred
.paCred
= &storedContext
;
1729 * SSPI doesn't seem to like it if grbitEnabledProtocols is set for a client.
1732 if (http
->mode
== _HTTP_MODE_SERVER
)
1733 SchannelCred
.grbitEnabledProtocols
= SP_PROT_SSL3TLS1
;
1736 * Create an SSPI credential.
1739 Status
= AcquireCredentialsHandle(NULL
, UNISP_NAME
, http
->mode
== _HTTP_MODE_SERVER
? SECPKG_CRED_INBOUND
: SECPKG_CRED_OUTBOUND
, NULL
, &SchannelCred
, NULL
, NULL
, &sspi
->creds
, &tsExpiry
);
1740 if (Status
!= SEC_E_OK
)
1742 DEBUG_printf(("5http_sspi_find_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), Status
)));
1754 CertFreeCertificateContext(storedContext
);
1760 CertCloseStore(store
, 0);
1763 CryptReleaseContext(hProv
, 0);
1770 * 'http_sspi_free()' - Close a connection and free resources.
1774 http_sspi_free(_http_sspi_t
*sspi
) /* I - SSPI data */
1779 if (sspi
->contextInitialized
)
1780 DeleteSecurityContext(&sspi
->context
);
1782 if (sspi
->decryptBuffer
)
1783 free(sspi
->decryptBuffer
);
1785 if (sspi
->readBuffer
)
1786 free(sspi
->readBuffer
);
1788 if (sspi
->writeBuffer
)
1789 free(sspi
->writeBuffer
);
1791 if (sspi
->localCert
)
1792 CertFreeCertificateContext(sspi
->localCert
);
1794 if (sspi
->remoteCert
)
1795 CertFreeCertificateContext(sspi
->remoteCert
);
1802 * 'http_sspi_make_credentials()' - Create a TLS certificate in the system store.
1805 static BOOL
/* O - 1 on success, 0 on failure */
1806 http_sspi_make_credentials(
1807 _http_sspi_t
*sspi
, /* I - SSPI data */
1808 const LPWSTR container
, /* I - Cert container name */
1809 const char *common_name
, /* I - Common name of certificate */
1810 _http_mode_t mode
, /* I - Client or server? */
1811 int years
) /* I - Years until expiration */
1813 HCERTSTORE store
= NULL
; /* Certificate store */
1814 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
1815 PCCERT_CONTEXT createdContext
= NULL
; /* Context created by us */
1816 DWORD dwSize
= 0; /* 32 bit size */
1817 PBYTE p
= NULL
; /* Temporary storage */
1818 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
1819 /* Handle to a CSP */
1820 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
1821 SCHANNEL_CRED SchannelCred
; /* Schannel credential data */
1822 TimeStamp tsExpiry
; /* Time stamp */
1823 SECURITY_STATUS Status
; /* Status */
1824 HCRYPTKEY hKey
= (HCRYPTKEY
)NULL
; /* Handle to crypto key */
1825 CRYPT_KEY_PROV_INFO kpi
; /* Key container info */
1826 SYSTEMTIME et
; /* System time */
1827 CERT_EXTENSIONS exts
; /* Array of cert extensions */
1828 CRYPT_KEY_PROV_INFO ckp
; /* Handle to crypto key */
1829 BOOL ok
= TRUE
; /* Return value */
1832 DEBUG_printf(("4http_sspi_make_credentials(sspi=%p, container=%p, common_name=\"%s\", mode=%d, years=%d)", sspi
, container
, common_name
, mode
, years
));
1834 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
1836 if (GetLastError() == NTE_EXISTS
)
1838 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
1840 DEBUG_printf(("5http_sspi_make_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1847 store
= CertOpenStore(CERT_STORE_PROV_SYSTEM
, X509_ASN_ENCODING
|PKCS_7_ASN_ENCODING
, hProv
, CERT_SYSTEM_STORE_LOCAL_MACHINE
| CERT_STORE_NO_CRYPT_RELEASE_FLAG
| CERT_STORE_OPEN_EXISTING_FLAG
, L
"MY");
1851 DEBUG_printf(("5http_sspi_make_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1858 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
1860 DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1865 p
= (PBYTE
)malloc(dwSize
);
1869 DEBUG_printf(("5http_sspi_make_credentials: malloc failed for %d bytes", dwSize
));
1874 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
1876 DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1882 * Create a private key and self-signed certificate...
1885 if (!CryptGenKey(hProv
, AT_KEYEXCHANGE
, CRYPT_EXPORTABLE
, &hKey
))
1887 DEBUG_printf(("5http_sspi_make_credentials: CryptGenKey failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1892 ZeroMemory(&kpi
, sizeof(kpi
));
1893 kpi
.pwszContainerName
= (LPWSTR
)container
;
1894 kpi
.pwszProvName
= MS_DEF_PROV_W
;
1895 kpi
.dwProvType
= PROV_RSA_FULL
;
1896 kpi
.dwFlags
= CERT_SET_KEY_CONTEXT_PROP_ID
;
1897 kpi
.dwKeySpec
= AT_KEYEXCHANGE
;
1902 ZeroMemory(&exts
, sizeof(exts
));
1904 createdContext
= CertCreateSelfSignCertificate(hProv
, &sib
, 0, &kpi
, NULL
, NULL
, &et
, &exts
);
1906 if (!createdContext
)
1908 DEBUG_printf(("5http_sspi_make_credentials: CertCreateSelfSignCertificate failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1914 * Add the created context to the named store, and associate it with the named
1918 if (!CertAddCertificateContextToStore(store
, createdContext
, CERT_STORE_ADD_REPLACE_EXISTING
, &storedContext
))
1920 DEBUG_printf(("5http_sspi_make_credentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1925 ZeroMemory(&ckp
, sizeof(ckp
));
1926 ckp
.pwszContainerName
= (LPWSTR
) container
;
1927 ckp
.pwszProvName
= MS_DEF_PROV_W
;
1928 ckp
.dwProvType
= PROV_RSA_FULL
;
1929 ckp
.dwFlags
= CRYPT_MACHINE_KEYSET
;
1930 ckp
.dwKeySpec
= AT_KEYEXCHANGE
;
1932 if (!CertSetCertificateContextProperty(storedContext
, CERT_KEY_PROV_INFO_PROP_ID
, 0, &ckp
))
1934 DEBUG_printf(("5http_sspi_make_credentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1940 * Get a handle to use the certificate...
1943 ZeroMemory(&SchannelCred
, sizeof(SchannelCred
));
1945 SchannelCred
.dwVersion
= SCHANNEL_CRED_VERSION
;
1946 SchannelCred
.cCreds
= 1;
1947 SchannelCred
.paCred
= &storedContext
;
1950 * SSPI doesn't seem to like it if grbitEnabledProtocols is set for a client.
1953 if (mode
== _HTTP_MODE_SERVER
)
1954 SchannelCred
.grbitEnabledProtocols
= SP_PROT_SSL3TLS1
;
1957 * Create an SSPI credential.
1960 Status
= AcquireCredentialsHandle(NULL
, UNISP_NAME
, mode
== _HTTP_MODE_SERVER
? SECPKG_CRED_INBOUND
: SECPKG_CRED_OUTBOUND
, NULL
, &SchannelCred
, NULL
, NULL
, &sspi
->creds
, &tsExpiry
);
1961 if (Status
!= SEC_E_OK
)
1963 DEBUG_printf(("5http_sspi_make_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), Status
)));
1975 CryptDestroyKey(hKey
);
1978 CertFreeCertificateContext(createdContext
);
1981 CertFreeCertificateContext(storedContext
);
1987 CertCloseStore(store
, 0);
1990 CryptReleaseContext(hProv
, 0);
1997 * 'http_sspi_server()' - Negotiate a TLS connection as a server.
2000 static int /* O - 0 on success, -1 on failure */
2001 http_sspi_server(http_t
*http
, /* I - HTTP connection */
2002 const char *hostname
) /* I - Hostname of server */
2004 _http_sspi_t
*sspi
= http
->tls
; /* I - SSPI data */
2005 char common_name
[512]; /* Common name for cert */
2006 DWORD dwSSPIFlags
; /* SSL connection attributes we want */
2007 DWORD dwSSPIOutFlags
; /* SSL connection attributes we got */
2008 TimeStamp tsExpiry
; /* Time stamp */
2009 SECURITY_STATUS scRet
; /* SSPI Status */
2010 SecBufferDesc inBuffer
; /* Array of SecBuffer structs */
2011 SecBuffer inBuffers
[2]; /* Security package buffer */
2012 SecBufferDesc outBuffer
; /* Array of SecBuffer structs */
2013 SecBuffer outBuffers
[1]; /* Security package buffer */
2014 int num
= 0; /* 32 bit status value */
2015 BOOL fInitContext
= TRUE
; /* Has the context been init'd? */
2016 int ret
= 0; /* Return value */
2019 DEBUG_printf(("4http_sspi_server(http=%p, hostname=\"%s\")", http
, hostname
));
2021 dwSSPIFlags
= ASC_REQ_SEQUENCE_DETECT
|
2022 ASC_REQ_REPLAY_DETECT
|
2023 ASC_REQ_CONFIDENTIALITY
|
2024 ASC_REQ_EXTENDED_ERROR
|
2025 ASC_REQ_ALLOCATE_MEMORY
|
2028 sspi
->decryptBufferUsed
= 0;
2031 * Lookup the server certificate...
2034 snprintf(common_name
, sizeof(common_name
), "CN=%s", hostname
);
2036 if (!http_sspi_find_credentials(http
, L
"ServerContainer", common_name
))
2037 if (!http_sspi_make_credentials(http
->tls
, L
"ServerContainer", common_name
, _HTTP_MODE_SERVER
, 10))
2039 DEBUG_puts("5http_sspi_server: Unable to get server credentials.");
2044 * Set OutBuffer for AcceptSecurityContext call
2047 outBuffer
.cBuffers
= 1;
2048 outBuffer
.pBuffers
= outBuffers
;
2049 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
2051 scRet
= SEC_I_CONTINUE_NEEDED
;
2053 while (scRet
== SEC_I_CONTINUE_NEEDED
||
2054 scRet
== SEC_E_INCOMPLETE_MESSAGE
||
2055 scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
2057 if (sspi
->decryptBufferUsed
== 0 || scRet
== SEC_E_INCOMPLETE_MESSAGE
)
2059 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
2061 BYTE
*temp
; /* New buffer */
2063 if (sspi
->decryptBufferLength
>= 262144)
2065 WSASetLastError(E_OUTOFMEMORY
);
2066 DEBUG_puts("5http_sspi_server: Decryption buffer too large (>256k)");
2070 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
2072 DEBUG_printf(("5http_sspi_server: Unable to allocate %d byte buffer.", sspi
->decryptBufferLength
+ 4096));
2073 WSASetLastError(E_OUTOFMEMORY
);
2077 sspi
->decryptBufferLength
+= 4096;
2078 sspi
->decryptBuffer
= temp
;
2083 num
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
2085 if (num
== -1 && WSAGetLastError() == WSAEWOULDBLOCK
)
2093 DEBUG_printf(("5http_sspi_server: recv failed: %d", WSAGetLastError()));
2098 DEBUG_puts("5http_sspi_server: client disconnected");
2102 DEBUG_printf(("5http_sspi_server: received %d (handshake) bytes from client.", num
));
2103 sspi
->decryptBufferUsed
+= num
;
2107 * InBuffers[1] is for getting extra data that SSPI/SCHANNEL doesn't process
2108 * on this run around the loop.
2111 inBuffers
[0].pvBuffer
= sspi
->decryptBuffer
;
2112 inBuffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
2113 inBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
2115 inBuffers
[1].pvBuffer
= NULL
;
2116 inBuffers
[1].cbBuffer
= 0;
2117 inBuffers
[1].BufferType
= SECBUFFER_EMPTY
;
2119 inBuffer
.cBuffers
= 2;
2120 inBuffer
.pBuffers
= inBuffers
;
2121 inBuffer
.ulVersion
= SECBUFFER_VERSION
;
2124 * Initialize these so if we fail, pvBuffer contains NULL, so we don't try to
2125 * free random garbage at the quit.
2128 outBuffers
[0].pvBuffer
= NULL
;
2129 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
2130 outBuffers
[0].cbBuffer
= 0;
2132 scRet
= AcceptSecurityContext(&sspi
->creds
, (fInitContext
?NULL
:&sspi
->context
), &inBuffer
, dwSSPIFlags
, SECURITY_NATIVE_DREP
, (fInitContext
?&sspi
->context
:NULL
), &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
2134 fInitContext
= FALSE
;
2136 if (scRet
== SEC_E_OK
||
2137 scRet
== SEC_I_CONTINUE_NEEDED
||
2138 (FAILED(scRet
) && ((dwSSPIOutFlags
& ISC_RET_EXTENDED_ERROR
) != 0)))
2140 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
2143 * Send response to server if there is one.
2146 num
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0);
2150 DEBUG_printf(("5http_sspi_server: handshake send failed: %d", WSAGetLastError()));
2154 DEBUG_printf(("5http_sspi_server: sent %d handshake bytes to client.", outBuffers
[0].cbBuffer
));
2156 FreeContextBuffer(outBuffers
[0].pvBuffer
);
2157 outBuffers
[0].pvBuffer
= NULL
;
2161 if (scRet
== SEC_E_OK
)
2164 * If there's extra data then save it for next time we go to decrypt.
2167 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
2169 memcpy(sspi
->decryptBuffer
, (LPBYTE
)(sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
), inBuffers
[1].cbBuffer
);
2170 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
2174 sspi
->decryptBufferUsed
= 0;
2178 else if (FAILED(scRet
) && scRet
!= SEC_E_INCOMPLETE_MESSAGE
)
2180 DEBUG_printf(("5http_sspi_server: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
2185 if (scRet
!= SEC_E_INCOMPLETE_MESSAGE
&&
2186 scRet
!= SEC_I_INCOMPLETE_CREDENTIALS
)
2188 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
2190 memcpy(sspi
->decryptBuffer
, (LPBYTE
)(sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
), inBuffers
[1].cbBuffer
);
2191 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
2195 sspi
->decryptBufferUsed
= 0;
2202 sspi
->contextInitialized
= TRUE
;
2205 * Find out how big the header will be:
2208 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_STREAM_SIZES
, &sspi
->streamSizes
);
2210 if (scRet
!= SEC_E_OK
)
2212 DEBUG_printf(("5http_sspi_server: QueryContextAttributes failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
2222 * 'http_sspi_strerror()' - Return a string for the specified error code.
2225 static const char * /* O - String for error */
2226 http_sspi_strerror(char *buffer
, /* I - Error message buffer */
2227 size_t bufsize
, /* I - Size of buffer */
2228 DWORD code
) /* I - Error code */
2230 if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
, NULL
, code
, 0, buffer
, bufsize
, NULL
))
2233 * Strip trailing CR + LF...
2236 char *ptr
; /* Pointer into error message */
2238 for (ptr
= buffer
+ strlen(buffer
) - 1; ptr
>= buffer
; ptr
--)
2239 if (*ptr
== '\n' || *ptr
== '\r')
2245 snprintf(buffer
, bufsize
, "Unknown error %x", code
);
2252 * 'http_sspi_verify()' - Verify a certificate.
2255 static DWORD
/* O - Error code (0 == No error) */
2257 PCCERT_CONTEXT cert
, /* I - Server certificate */
2258 const char *common_name
, /* I - Common name */
2259 DWORD dwCertFlags
) /* I - Verification flags */
2261 HTTPSPolicyCallbackData httpsPolicy
; /* HTTPS Policy Struct */
2262 CERT_CHAIN_POLICY_PARA policyPara
; /* Cert chain policy parameters */
2263 CERT_CHAIN_POLICY_STATUS policyStatus
;/* Cert chain policy status */
2264 CERT_CHAIN_PARA chainPara
; /* Used for searching and matching criteria */
2265 PCCERT_CHAIN_CONTEXT chainContext
= NULL
;
2266 /* Certificate chain */
2267 PWSTR commonNameUnicode
= NULL
;
2268 /* Unicode common name */
2269 LPSTR rgszUsages
[] = { szOID_PKIX_KP_SERVER_AUTH
,
2270 szOID_SERVER_GATED_CRYPTO
,
2271 szOID_SGC_NETSCAPE
};
2272 /* How are we using this certificate? */
2273 DWORD cUsages
= sizeof(rgszUsages
) / sizeof(LPSTR
);
2274 /* Number of ites in rgszUsages */
2275 DWORD count
; /* 32 bit count variable */
2276 DWORD status
; /* Return value */
2280 return (SEC_E_WRONG_PRINCIPAL
);
2283 * Convert common name to Unicode.
2286 if (!common_name
|| !*common_name
)
2287 return (SEC_E_WRONG_PRINCIPAL
);
2289 count
= MultiByteToWideChar(CP_ACP
, 0, common_name
, -1, NULL
, 0);
2290 commonNameUnicode
= LocalAlloc(LMEM_FIXED
, count
* sizeof(WCHAR
));
2291 if (!commonNameUnicode
)
2292 return (SEC_E_INSUFFICIENT_MEMORY
);
2294 if (!MultiByteToWideChar(CP_ACP
, 0, common_name
, -1, commonNameUnicode
, count
))
2296 LocalFree(commonNameUnicode
);
2297 return (SEC_E_WRONG_PRINCIPAL
);
2301 * Build certificate chain.
2304 ZeroMemory(&chainPara
, sizeof(chainPara
));
2306 chainPara
.cbSize
= sizeof(chainPara
);
2307 chainPara
.RequestedUsage
.dwType
= USAGE_MATCH_TYPE_OR
;
2308 chainPara
.RequestedUsage
.Usage
.cUsageIdentifier
= cUsages
;
2309 chainPara
.RequestedUsage
.Usage
.rgpszUsageIdentifier
= rgszUsages
;
2311 if (!CertGetCertificateChain(NULL
, cert
, NULL
, cert
->hCertStore
, &chainPara
, 0, NULL
, &chainContext
))
2313 status
= GetLastError();
2316 char error
[1024]; /* Error message string */
2318 DEBUG_printf(("CertGetCertificateChain returned: %s", http_sspi_strerror(error
, sizeof(error
), status
)));
2321 LocalFree(commonNameUnicode
);
2326 * Validate certificate chain.
2329 ZeroMemory(&httpsPolicy
, sizeof(HTTPSPolicyCallbackData
));
2330 httpsPolicy
.cbStruct
= sizeof(HTTPSPolicyCallbackData
);
2331 httpsPolicy
.dwAuthType
= AUTHTYPE_SERVER
;
2332 httpsPolicy
.fdwChecks
= dwCertFlags
;
2333 httpsPolicy
.pwszServerName
= commonNameUnicode
;
2335 memset(&policyPara
, 0, sizeof(policyPara
));
2336 policyPara
.cbSize
= sizeof(policyPara
);
2337 policyPara
.pvExtraPolicyPara
= &httpsPolicy
;
2339 memset(&policyStatus
, 0, sizeof(policyStatus
));
2340 policyStatus
.cbSize
= sizeof(policyStatus
);
2342 if (!CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL
, chainContext
, &policyPara
, &policyStatus
))
2344 status
= GetLastError();
2347 char error
[1024]; /* Error message string */
2349 DEBUG_printf(("CertVerifyCertificateChainPolicy returned %s", http_sspi_strerror(error
, sizeof(error
), status
)));
2352 else if (policyStatus
.dwError
)
2353 status
= policyStatus
.dwError
;
2358 CertFreeCertificateChain(chainContext
);
2360 if (commonNameUnicode
)
2361 LocalFree(commonNameUnicode
);