2 * TLS support for CUPS on Windows using the Security Support Provider
5 * Copyright 2010-2017 by Apple Inc.
7 * These coded instructions, statements, and computer programs are the
8 * property of Apple Inc. and are protected by Federal copyright
9 * law. Distribution and use rights are outlined in the file "LICENSE.txt"
10 * which should have been included with this file. If this file is
11 * missing or damaged, see the license at "http://www.cups.org/".
13 * This file is subject to the Apple OS-Developed Software exception.
16 /**** This file is included from tls.c ****/
19 * Include necessary headers...
22 #include "debug-private.h"
26 * Include necessary libraries...
29 #pragma comment(lib, "Crypt32.lib")
30 #pragma comment(lib, "Secur32.lib")
31 #pragma comment(lib, "Ws2_32.lib")
38 #ifndef SECURITY_FLAG_IGNORE_UNKNOWN_CA
39 # define SECURITY_FLAG_IGNORE_UNKNOWN_CA 0x00000100 /* Untrusted root */
40 #endif /* SECURITY_FLAG_IGNORE_UNKNOWN_CA */
42 #ifndef SECURITY_FLAG_IGNORE_CERT_CN_INVALID
43 # define SECURITY_FLAG_IGNORE_CERT_CN_INVALID 0x00001000 /* Common name does not match */
44 #endif /* !SECURITY_FLAG_IGNORE_CERT_CN_INVALID */
46 #ifndef SECURITY_FLAG_IGNORE_CERT_DATE_INVALID
47 # define SECURITY_FLAG_IGNORE_CERT_DATE_INVALID 0x00002000 /* Expired X509 Cert. */
48 #endif /* !SECURITY_FLAG_IGNORE_CERT_DATE_INVALID */
55 static int tls_options
= -1;/* Options for TLS connections */
62 static _http_sspi_t
*http_sspi_alloc(void);
63 static int http_sspi_client(http_t
*http
, const char *hostname
);
64 static PCCERT_CONTEXT
http_sspi_create_credential(http_credential_t
*cred
);
65 static BOOL
http_sspi_find_credentials(http_t
*http
, const LPWSTR containerName
, const char *common_name
);
66 static void http_sspi_free(_http_sspi_t
*sspi
);
67 static BOOL
http_sspi_make_credentials(_http_sspi_t
*sspi
, const LPWSTR containerName
, const char *common_name
, _http_mode_t mode
, int years
);
68 static int http_sspi_server(http_t
*http
, const char *hostname
);
69 static void http_sspi_set_allows_any_root(_http_sspi_t
*sspi
, BOOL allow
);
70 static void http_sspi_set_allows_expired_certs(_http_sspi_t
*sspi
, BOOL allow
);
71 static const char *http_sspi_strerror(char *buffer
, size_t bufsize
, DWORD code
);
72 static DWORD
http_sspi_verify(PCCERT_CONTEXT cert
, const char *common_name
, DWORD dwCertFlags
);
76 * 'cupsMakeServerCredentials()' - Make a self-signed certificate and private key pair.
78 * @since CUPS 2.0/OS 10.10@
81 int /* O - 1 on success, 0 on failure */
82 cupsMakeServerCredentials(
83 const char *path
, /* I - Keychain path or @code NULL@ for default */
84 const char *common_name
, /* I - Common name */
85 int num_alt_names
, /* I - Number of subject alternate names */
86 const char **alt_names
, /* I - Subject Alternate Names */
87 time_t expiration_date
) /* I - Expiration date */
89 _http_sspi_t
*sspi
; /* SSPI data */
90 int ret
; /* Return value */
93 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
));
99 sspi
= http_sspi_alloc();
100 ret
= http_sspi_make_credentials(sspi
, L
"ServerContainer", common_name
, _HTTP_MODE_SERVER
, (int)((expiration_date
- time(NULL
) + 86399) / 86400 / 365));
102 http_sspi_free(sspi
);
109 * 'cupsSetServerCredentials()' - Set the default server credentials.
111 * Note: The server credentials are used by all threads in the running process.
112 * This function is threadsafe.
114 * @since CUPS 2.0/OS 10.10@
117 int /* O - 1 on success, 0 on failure */
118 cupsSetServerCredentials(
119 const char *path
, /* I - Keychain path or @code NULL@ for default */
120 const char *common_name
, /* I - Default common name for server */
121 int auto_create
) /* I - 1 = automatically create self-signed certificates */
123 DEBUG_printf(("cupsSetServerCredentials(path=\"%s\", common_name=\"%s\", auto_create=%d)", path
, common_name
, auto_create
));
134 * 'httpCopyCredentials()' - Copy the credentials associated with the peer in
135 * an encrypted connection.
137 * @since CUPS 1.5/macOS 10.7@
140 int /* O - Status of call (0 = success) */
142 http_t
*http
, /* I - Connection to server */
143 cups_array_t
**credentials
) /* O - Array of credentials */
145 DEBUG_printf(("httpCopyCredentials(http=%p, credentials=%p)", http
, credentials
));
147 if (!http
|| !http
->tls
|| !http
->tls
->remoteCert
|| !credentials
)
155 *credentials
= cupsArrayNew(NULL
, NULL
);
156 httpAddCredential(*credentials
, http
->tls
->remoteCert
->pbCertEncoded
, http
->tls
->remoteCert
->cbCertEncoded
);
163 * '_httpCreateCredentials()' - Create credentials in the internal format.
166 http_tls_credentials_t
/* O - Internal credentials */
167 _httpCreateCredentials(
168 cups_array_t
*credentials
) /* I - Array of credentials */
170 return (http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
)));
175 * 'httpCredentialsAreValidForName()' - Return whether the credentials are valid for the given name.
177 * @since CUPS 2.0/OS 10.10@
180 int /* O - 1 if valid, 0 otherwise */
181 httpCredentialsAreValidForName(
182 cups_array_t
*credentials
, /* I - Credentials */
183 const char *common_name
) /* I - Name to check */
185 int valid
= 1; /* Valid name? */
186 PCCERT_CONTEXT cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
188 char cert_name
[1024]; /* Name from certificate */
193 if (CertNameToStr(X509_ASN_ENCODING
, &(cert
->pCertInfo
->Subject
), CERT_SIMPLE_NAME_STR
, cert_name
, sizeof(cert_name
)))
196 * Extract common name at end...
199 char *ptr
= strrchr(cert_name
, ',');
201 _cups_strcpy(cert_name
, ptr
+ 2);
204 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
206 CertFreeCertificateContext(cert
);
209 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
212 * Compare the common names...
215 if (_cups_strcasecmp(common_name
, cert_name
))
218 * Not an exact match for the common name, check for wildcard certs...
221 const char *domain
= strchr(common_name
, '.');
222 /* Domain in common name */
224 if (strncmp(cert_name
, "*.", 2) || !domain
|| _cups_strcasecmp(domain
, cert_name
+ 1))
227 * Not a wildcard match.
230 /* TODO: Check subject alternate names */
240 * 'httpCredentialsGetTrust()' - Return the trust of credentials.
242 * @since CUPS 2.0/OS 10.10@
245 http_trust_t
/* O - Level of trust */
246 httpCredentialsGetTrust(
247 cups_array_t
*credentials
, /* I - Credentials */
248 const char *common_name
) /* I - Common name for trust lookup */
250 http_trust_t trust
= HTTP_TRUST_OK
; /* Level of trust */
251 PCCERT_CONTEXT cert
= NULL
; /* Certificate to validate */
252 DWORD certFlags
= 0; /* Cert verification flags */
253 _cups_globals_t
*cg
= _cupsGlobals(); /* Per-thread global data */
257 return (HTTP_TRUST_UNKNOWN
);
259 cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
261 return (HTTP_TRUST_UNKNOWN
);
263 if (cg
->any_root
< 0)
267 certFlags
|= SECURITY_FLAG_IGNORE_UNKNOWN_CA
;
269 if (cg
->expired_certs
)
270 certFlags
|= SECURITY_FLAG_IGNORE_CERT_DATE_INVALID
;
272 if (!cg
->validate_certs
)
273 certFlags
|= SECURITY_FLAG_IGNORE_CERT_CN_INVALID
;
275 if (http_sspi_verify(cert
, common_name
, certFlags
) != SEC_E_OK
)
276 trust
= HTTP_TRUST_INVALID
;
278 CertFreeCertificateContext(cert
);
285 * 'httpCredentialsGetExpiration()' - Return the expiration date of the credentials.
287 * @since CUPS 2.0/OS 10.10@
290 time_t /* O - Expiration date of credentials */
291 httpCredentialsGetExpiration(
292 cups_array_t
*credentials
) /* I - Credentials */
294 time_t expiration_date
= 0; /* Expiration data of credentials */
295 PCCERT_CONTEXT cert
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
300 SYSTEMTIME systime
; /* System time */
301 struct tm tm
; /* UNIX date/time */
303 FileTimeToSystemTime(&(cert
->pCertInfo
->NotAfter
), &systime
);
305 tm
.tm_year
= systime
.wYear
- 1900;
306 tm
.tm_mon
= systime
.wMonth
- 1;
307 tm
.tm_mday
= systime
.wDay
;
308 tm
.tm_hour
= systime
.wHour
;
309 tm
.tm_min
= systime
.wMinute
;
310 tm
.tm_sec
= systime
.wSecond
;
312 expiration_date
= mktime(&tm
);
314 CertFreeCertificateContext(cert
);
317 return (expiration_date
);
322 * 'httpCredentialsString()' - Return a string representing the credentials.
324 * @since CUPS 2.0/OS 10.10@
327 size_t /* O - Total size of credentials string */
328 httpCredentialsString(
329 cups_array_t
*credentials
, /* I - Credentials */
330 char *buffer
, /* I - Buffer or @code NULL@ */
331 size_t bufsize
) /* I - Size of buffer */
333 http_credential_t
*first
= (http_credential_t
*)cupsArrayFirst(credentials
);
334 /* First certificate */
335 PCCERT_CONTEXT cert
; /* Certificate */
338 DEBUG_printf(("httpCredentialsString(credentials=%p, buffer=%p, bufsize=" CUPS_LLFMT
")", credentials
, buffer
, CUPS_LLCAST bufsize
));
343 if (buffer
&& bufsize
> 0)
346 cert
= http_sspi_create_credential(first
);
350 char cert_name
[256]; /* Common name */
351 SYSTEMTIME systime
; /* System time */
352 struct tm tm
; /* UNIX date/time */
353 time_t expiration
; /* Expiration date of cert */
354 _cups_md5_state_t md5_state
; /* MD5 state */
355 unsigned char md5_digest
[16]; /* MD5 result */
357 FileTimeToSystemTime(&(cert
->pCertInfo
->NotAfter
), &systime
);
359 tm
.tm_year
= systime
.wYear
- 1900;
360 tm
.tm_mon
= systime
.wMonth
- 1;
361 tm
.tm_mday
= systime
.wDay
;
362 tm
.tm_hour
= systime
.wHour
;
363 tm
.tm_min
= systime
.wMinute
;
364 tm
.tm_sec
= systime
.wSecond
;
366 expiration
= mktime(&tm
);
368 if (CertNameToStr(X509_ASN_ENCODING
, &(cert
->pCertInfo
->Subject
), CERT_SIMPLE_NAME_STR
, cert_name
, sizeof(cert_name
)))
371 * Extract common name at end...
374 char *ptr
= strrchr(cert_name
, ',');
376 _cups_strcpy(cert_name
, ptr
+ 2);
379 strlcpy(cert_name
, "unknown", sizeof(cert_name
));
381 _cupsMD5Init(&md5_state
);
382 _cupsMD5Append(&md5_state
, first
->data
, (int)first
->datalen
);
383 _cupsMD5Finish(&md5_state
, md5_digest
);
385 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]);
387 CertFreeCertificateContext(cert
);
390 DEBUG_printf(("1httpCredentialsString: Returning \"%s\".", buffer
));
392 return (strlen(buffer
));
397 * '_httpFreeCredentials()' - Free internal credentials.
401 _httpFreeCredentials(
402 http_tls_credentials_t credentials
) /* I - Internal credentials */
407 CertFreeCertificateContext(credentials
);
412 * 'httpLoadCredentials()' - Load X.509 credentials from a keychain file.
414 * @since CUPS 2.0/OS 10.10@
417 int /* O - 0 on success, -1 on error */
419 const char *path
, /* I - Keychain path or @code NULL@ for default */
420 cups_array_t
**credentials
, /* IO - Credentials */
421 const char *common_name
) /* I - Common name for credentials */
423 HCERTSTORE store
= NULL
; /* Certificate store */
424 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
425 DWORD dwSize
= 0; /* 32 bit size */
426 PBYTE p
= NULL
; /* Temporary storage */
427 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
428 /* Handle to a CSP */
429 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
431 char error
[1024]; /* Error message buffer */
435 DEBUG_printf(("httpLoadCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path
, credentials
, common_name
));
445 DEBUG_puts("1httpLoadCredentials: NULL credentials pointer, returning -1.");
451 DEBUG_puts("1httpLoadCredentials: Bad common name, returning -1.");
455 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
457 if (GetLastError() == NTE_EXISTS
)
459 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
461 DEBUG_printf(("1httpLoadCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
467 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");
471 DEBUG_printf(("1httpLoadCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
477 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
479 DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
483 p
= (PBYTE
)malloc(dwSize
);
487 DEBUG_printf(("1httpLoadCredentials: malloc failed for %d bytes.", dwSize
));
491 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
493 DEBUG_printf(("1httpLoadCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
500 storedContext
= CertFindCertificateInStore(store
, X509_ASN_ENCODING
| PKCS_7_ASN_ENCODING
, 0, CERT_FIND_SUBJECT_NAME
, &sib
, NULL
);
504 DEBUG_printf(("1httpLoadCredentials: Unable to find credentials for \"%s\".", common_name
));
508 *credentials
= cupsArrayNew(NULL
, NULL
);
509 httpAddCredential(*credentials
, storedContext
->pbCertEncoded
, storedContext
->cbCertEncoded
);
518 CertFreeCertificateContext(storedContext
);
524 CertCloseStore(store
, 0);
527 CryptReleaseContext(hProv
, 0);
529 DEBUG_printf(("1httpLoadCredentials: Returning %d.", *credentials
? 0 : -1));
531 return (*credentials
? 0 : -1);
536 * 'httpSaveCredentials()' - Save X.509 credentials to a keychain file.
538 * @since CUPS 2.0/OS 10.10@
541 int /* O - -1 on error, 0 on success */
543 const char *path
, /* I - Keychain path or @code NULL@ for default */
544 cups_array_t
*credentials
, /* I - Credentials */
545 const char *common_name
) /* I - Common name for credentials */
547 HCERTSTORE store
= NULL
; /* Certificate store */
548 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
549 PCCERT_CONTEXT createdContext
= NULL
; /* Context created by us */
550 DWORD dwSize
= 0; /* 32 bit size */
551 PBYTE p
= NULL
; /* Temporary storage */
552 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
553 /* Handle to a CSP */
554 CRYPT_KEY_PROV_INFO ckp
; /* Handle to crypto key */
555 int ret
= -1; /* Return value */
557 char error
[1024]; /* Error message buffer */
561 DEBUG_printf(("httpSaveCredentials(path=\"%s\", credentials=%p, common_name=\"%s\")", path
, credentials
, common_name
));
567 DEBUG_puts("1httpSaveCredentials: Bad common name, returning -1.");
571 createdContext
= http_sspi_create_credential((http_credential_t
*)cupsArrayFirst(credentials
));
574 DEBUG_puts("1httpSaveCredentials: Bad credentials, returning -1.");
578 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
580 if (GetLastError() == NTE_EXISTS
)
582 if (!CryptAcquireContextW(&hProv
, L
"RememberedContainer", MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
584 DEBUG_printf(("1httpSaveCredentials: CryptAcquireContext failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
590 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");
594 DEBUG_printf(("1httpSaveCredentials: CertOpenSystemStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
600 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
602 DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
606 p
= (PBYTE
)malloc(dwSize
);
610 DEBUG_printf(("1httpSaveCredentials: malloc failed for %d bytes.", dwSize
));
614 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
616 DEBUG_printf(("1httpSaveCredentials: CertStrToName failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
621 * Add the created context to the named store, and associate it with the named
625 if (!CertAddCertificateContextToStore(store
, createdContext
, CERT_STORE_ADD_REPLACE_EXISTING
, &storedContext
))
627 DEBUG_printf(("1httpSaveCredentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
631 ZeroMemory(&ckp
, sizeof(ckp
));
632 ckp
.pwszContainerName
= L
"RememberedContainer";
633 ckp
.pwszProvName
= MS_DEF_PROV_W
;
634 ckp
.dwProvType
= PROV_RSA_FULL
;
635 ckp
.dwFlags
= CRYPT_MACHINE_KEYSET
;
636 ckp
.dwKeySpec
= AT_KEYEXCHANGE
;
638 if (!CertSetCertificateContextProperty(storedContext
, CERT_KEY_PROV_INFO_PROP_ID
, 0, &ckp
))
640 DEBUG_printf(("1httpSaveCredentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(error
, sizeof(error
), GetLastError())));
653 CertFreeCertificateContext(createdContext
);
656 CertFreeCertificateContext(storedContext
);
662 CertCloseStore(store
, 0);
665 CryptReleaseContext(hProv
, 0);
667 DEBUG_printf(("1httpSaveCredentials: Returning %d.", ret
));
673 * '_httpTLSInitialize()' - Initialize the TLS stack.
677 _httpTLSInitialize(void)
686 * '_httpTLSPending()' - Return the number of pending TLS-encrypted bytes.
689 size_t /* O - Bytes available */
690 _httpTLSPending(http_t
*http
) /* I - HTTP connection */
693 return (http
->tls
->readBufferUsed
);
700 * '_httpTLSRead()' - Read from a SSL/TLS connection.
703 int /* O - Bytes read */
704 _httpTLSRead(http_t
*http
, /* I - HTTP connection */
705 char *buf
, /* I - Buffer to store data */
706 int len
) /* I - Length of buffer */
708 int i
; /* Looping var */
709 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
710 SecBufferDesc message
; /* Array of SecBuffer struct */
711 SecBuffer buffers
[4] = { 0 }; /* Security package buffer */
712 int num
= 0; /* Return value */
713 PSecBuffer pDataBuffer
; /* Data buffer */
714 PSecBuffer pExtraBuffer
; /* Excess data buffer */
715 SECURITY_STATUS scRet
; /* SSPI status */
718 DEBUG_printf(("4_httpTLSRead(http=%p, buf=%p, len=%d)", http
, buf
, len
));
721 * If there are bytes that have already been decrypted and have not yet been
722 * read, return those...
725 if (sspi
->readBufferUsed
> 0)
727 int bytesToCopy
= min(sspi
->readBufferUsed
, len
);
728 /* Number of bytes to copy */
730 memcpy(buf
, sspi
->readBuffer
, bytesToCopy
);
731 sspi
->readBufferUsed
-= bytesToCopy
;
733 if (sspi
->readBufferUsed
> 0)
734 memmove(sspi
->readBuffer
, sspi
->readBuffer
+ bytesToCopy
, sspi
->readBufferUsed
);
736 DEBUG_printf(("5_httpTLSRead: Returning %d bytes previously decrypted.", bytesToCopy
));
738 return (bytesToCopy
);
742 * Initialize security buffer structs
745 message
.ulVersion
= SECBUFFER_VERSION
;
746 message
.cBuffers
= 4;
747 message
.pBuffers
= buffers
;
752 * If there is not enough space in the buffer, then increase its size...
755 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
757 BYTE
*temp
; /* New buffer */
759 if (sspi
->decryptBufferLength
>= 262144)
761 WSASetLastError(E_OUTOFMEMORY
);
762 DEBUG_puts("_httpTLSRead: Decryption buffer too large (>256k)");
766 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
768 DEBUG_printf(("_httpTLSRead: Unable to allocate %d byte decryption buffer.", sspi
->decryptBufferLength
+ 4096));
769 WSASetLastError(E_OUTOFMEMORY
);
773 sspi
->decryptBufferLength
+= 4096;
774 sspi
->decryptBuffer
= temp
;
776 DEBUG_printf(("_httpTLSRead: Resized decryption buffer to %d bytes.", sspi
->decryptBufferLength
));
779 buffers
[0].pvBuffer
= sspi
->decryptBuffer
;
780 buffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
781 buffers
[0].BufferType
= SECBUFFER_DATA
;
782 buffers
[1].BufferType
= SECBUFFER_EMPTY
;
783 buffers
[2].BufferType
= SECBUFFER_EMPTY
;
784 buffers
[3].BufferType
= SECBUFFER_EMPTY
;
786 DEBUG_printf(("5_httpTLSRead: decryptBufferUsed=%d", sspi
->decryptBufferUsed
));
788 scRet
= DecryptMessage(&sspi
->context
, &message
, 0, NULL
);
790 if (scRet
== SEC_E_INCOMPLETE_MESSAGE
)
792 num
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
795 DEBUG_printf(("5_httpTLSRead: recv failed: %d", WSAGetLastError()));
800 DEBUG_puts("5_httpTLSRead: Server disconnected.");
804 DEBUG_printf(("5_httpTLSRead: Read %d bytes into decryption buffer.", num
));
806 sspi
->decryptBufferUsed
+= num
;
809 while (scRet
== SEC_E_INCOMPLETE_MESSAGE
);
811 if (scRet
== SEC_I_CONTEXT_EXPIRED
)
813 DEBUG_puts("5_httpTLSRead: Context expired.");
814 WSASetLastError(WSAECONNRESET
);
817 else if (scRet
!= SEC_E_OK
)
819 DEBUG_printf(("5_httpTLSRead: DecryptMessage failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
820 WSASetLastError(WSASYSCALLFAILURE
);
825 * The decryption worked. Now, locate data buffer.
831 for (i
= 1; i
< 4; i
++)
833 if (buffers
[i
].BufferType
== SECBUFFER_DATA
)
834 pDataBuffer
= &buffers
[i
];
835 else if (!pExtraBuffer
&& (buffers
[i
].BufferType
== SECBUFFER_EXTRA
))
836 pExtraBuffer
= &buffers
[i
];
840 * If a data buffer is found, then copy the decrypted bytes to the passed-in
846 int bytesToCopy
= min((int)pDataBuffer
->cbBuffer
, len
);
847 /* Number of bytes to copy into buf */
848 int bytesToSave
= pDataBuffer
->cbBuffer
- bytesToCopy
;
849 /* Number of bytes to save in our read buffer */
852 memcpy(buf
, pDataBuffer
->pvBuffer
, bytesToCopy
);
855 * If there are more decrypted bytes than can be copied to the passed in
856 * buffer, then save them...
861 if ((sspi
->readBufferLength
- sspi
->readBufferUsed
) < bytesToSave
)
863 BYTE
*temp
; /* New buffer pointer */
865 if ((temp
= realloc(sspi
->readBuffer
, sspi
->readBufferUsed
+ bytesToSave
)) == NULL
)
867 DEBUG_printf(("_httpTLSRead: Unable to allocate %d bytes.", sspi
->readBufferUsed
+ bytesToSave
));
868 WSASetLastError(E_OUTOFMEMORY
);
872 sspi
->readBufferLength
= sspi
->readBufferUsed
+ bytesToSave
;
873 sspi
->readBuffer
= temp
;
876 memcpy(((BYTE
*)sspi
->readBuffer
) + sspi
->readBufferUsed
, ((BYTE
*)pDataBuffer
->pvBuffer
) + bytesToCopy
, bytesToSave
);
878 sspi
->readBufferUsed
+= bytesToSave
;
885 DEBUG_puts("_httpTLSRead: Unable to find data buffer.");
886 WSASetLastError(WSASYSCALLFAILURE
);
891 * If the decryption process left extra bytes, then save those back in
892 * decryptBuffer. They will be processed the next time through the loop.
897 memmove(sspi
->decryptBuffer
, pExtraBuffer
->pvBuffer
, pExtraBuffer
->cbBuffer
);
898 sspi
->decryptBufferUsed
= pExtraBuffer
->cbBuffer
;
902 sspi
->decryptBufferUsed
= 0;
910 * '_httpTLSSetOptions()' - Set TLS protocol and cipher suite options.
914 _httpTLSSetOptions(int options
) /* I - Options */
916 if (!(options
& _HTTP_TLS_SET_DEFAULT
) || tls_options
< 0)
917 tls_options
= options
;
922 * '_httpTLSStart()' - Set up SSL/TLS support on a connection.
925 int /* O - 0 on success, -1 on failure */
926 _httpTLSStart(http_t
*http
) /* I - HTTP connection */
928 char hostname
[256], /* Hostname */
929 *hostptr
; /* Pointer into hostname */
932 DEBUG_printf(("3_httpTLSStart(http=%p)", http
));
936 DEBUG_puts("4_httpTLSStart: Setting defaults.");
938 DEBUG_printf(("4_httpTLSStart: tls_options=%x", tls_options
));
941 if ((http
->tls
= http_sspi_alloc()) == NULL
)
944 if (http
->mode
== _HTTP_MODE_CLIENT
)
947 * Client: determine hostname...
950 if (httpAddrLocalhost(http
->hostaddr
))
952 strlcpy(hostname
, "localhost", sizeof(hostname
));
957 * Otherwise make sure the hostname we have does not end in a trailing dot.
960 strlcpy(hostname
, http
->hostname
, sizeof(hostname
));
961 if ((hostptr
= hostname
+ strlen(hostname
) - 1) >= hostname
&&
966 return (http_sspi_client(http
, hostname
));
971 * Server: determine hostname to use...
974 if (http
->fields
[HTTP_FIELD_HOST
][0])
977 * Use hostname for TLS upgrade...
980 strlcpy(hostname
, http
->fields
[HTTP_FIELD_HOST
], sizeof(hostname
));
985 * Resolve hostname from connection address...
988 http_addr_t addr
; /* Connection address */
989 socklen_t addrlen
; /* Length of address */
991 addrlen
= sizeof(addr
);
992 if (getsockname(http
->fd
, (struct sockaddr
*)&addr
, &addrlen
))
994 DEBUG_printf(("4_httpTLSStart: Unable to get socket address: %s", strerror(errno
)));
997 else if (httpAddrLocalhost(&addr
))
1001 httpAddrLookup(&addr
, hostname
, sizeof(hostname
));
1002 DEBUG_printf(("4_httpTLSStart: Resolved socket address to \"%s\".", hostname
));
1006 return (http_sspi_server(http
, hostname
));
1012 * '_httpTLSStop()' - Shut down SSL/TLS on a connection.
1016 _httpTLSStop(http_t
*http
) /* I - HTTP connection */
1018 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1021 if (sspi
->contextInitialized
&& http
->fd
>= 0)
1023 SecBufferDesc message
; /* Array of SecBuffer struct */
1024 SecBuffer buffers
[1] = { 0 };
1025 /* Security package buffer */
1026 DWORD dwType
; /* Type */
1027 DWORD status
; /* Status */
1030 * Notify schannel that we are about to close the connection.
1033 dwType
= SCHANNEL_SHUTDOWN
;
1035 buffers
[0].pvBuffer
= &dwType
;
1036 buffers
[0].BufferType
= SECBUFFER_TOKEN
;
1037 buffers
[0].cbBuffer
= sizeof(dwType
);
1039 message
.cBuffers
= 1;
1040 message
.pBuffers
= buffers
;
1041 message
.ulVersion
= SECBUFFER_VERSION
;
1043 status
= ApplyControlToken(&sspi
->context
, &message
);
1045 if (SUCCEEDED(status
))
1047 PBYTE pbMessage
; /* Message buffer */
1048 DWORD cbMessage
; /* Message buffer count */
1049 DWORD cbData
; /* Data count */
1050 DWORD dwSSPIFlags
; /* SSL attributes we requested */
1051 DWORD dwSSPIOutFlags
; /* SSL attributes we received */
1052 TimeStamp tsExpiry
; /* Time stamp */
1054 dwSSPIFlags
= ASC_REQ_SEQUENCE_DETECT
|
1055 ASC_REQ_REPLAY_DETECT
|
1056 ASC_REQ_CONFIDENTIALITY
|
1057 ASC_REQ_EXTENDED_ERROR
|
1058 ASC_REQ_ALLOCATE_MEMORY
|
1061 buffers
[0].pvBuffer
= NULL
;
1062 buffers
[0].BufferType
= SECBUFFER_TOKEN
;
1063 buffers
[0].cbBuffer
= 0;
1065 message
.cBuffers
= 1;
1066 message
.pBuffers
= buffers
;
1067 message
.ulVersion
= SECBUFFER_VERSION
;
1069 status
= AcceptSecurityContext(&sspi
->creds
, &sspi
->context
, NULL
,
1070 dwSSPIFlags
, SECURITY_NATIVE_DREP
, NULL
,
1071 &message
, &dwSSPIOutFlags
, &tsExpiry
);
1073 if (SUCCEEDED(status
))
1075 pbMessage
= buffers
[0].pvBuffer
;
1076 cbMessage
= buffers
[0].cbBuffer
;
1079 * Send the close notify message to the client.
1082 if (pbMessage
&& cbMessage
)
1084 cbData
= send(http
->fd
, pbMessage
, cbMessage
, 0);
1085 if ((cbData
== SOCKET_ERROR
) || (cbData
== 0))
1087 status
= WSAGetLastError();
1088 DEBUG_printf(("_httpTLSStop: sending close notify failed: %d", status
));
1092 FreeContextBuffer(pbMessage
);
1098 DEBUG_printf(("_httpTLSStop: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), status
)));
1103 DEBUG_printf(("_httpTLSStop: ApplyControlToken failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), status
)));
1107 http_sspi_free(sspi
);
1114 * '_httpTLSWrite()' - Write to a SSL/TLS connection.
1117 int /* O - Bytes written */
1118 _httpTLSWrite(http_t
*http
, /* I - HTTP connection */
1119 const char *buf
, /* I - Buffer holding data */
1120 int len
) /* I - Length of buffer */
1122 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1123 SecBufferDesc message
; /* Array of SecBuffer struct */
1124 SecBuffer buffers
[4] = { 0 }; /* Security package buffer */
1125 int bufferLen
; /* Buffer length */
1126 int bytesLeft
; /* Bytes left to write */
1127 const char *bufptr
; /* Pointer into buffer */
1128 int num
= 0; /* Return value */
1131 bufferLen
= sspi
->streamSizes
.cbMaximumMessage
+ sspi
->streamSizes
.cbHeader
+ sspi
->streamSizes
.cbTrailer
;
1133 if (bufferLen
> sspi
->writeBufferLength
)
1135 BYTE
*temp
; /* New buffer pointer */
1137 if ((temp
= (BYTE
*)realloc(sspi
->writeBuffer
, bufferLen
)) == NULL
)
1139 DEBUG_printf(("_httpTLSWrite: Unable to allocate buffer of %d bytes.", bufferLen
));
1140 WSASetLastError(E_OUTOFMEMORY
);
1144 sspi
->writeBuffer
= temp
;
1145 sspi
->writeBufferLength
= bufferLen
;
1153 int chunk
= min((int)sspi
->streamSizes
.cbMaximumMessage
, bytesLeft
);
1154 /* Size of data to write */
1155 SECURITY_STATUS scRet
; /* SSPI status */
1158 * Copy user data into the buffer, starting just past the header...
1161 memcpy(sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
, bufptr
, chunk
);
1164 * Setup the SSPI buffers
1167 message
.ulVersion
= SECBUFFER_VERSION
;
1168 message
.cBuffers
= 4;
1169 message
.pBuffers
= buffers
;
1171 buffers
[0].pvBuffer
= sspi
->writeBuffer
;
1172 buffers
[0].cbBuffer
= sspi
->streamSizes
.cbHeader
;
1173 buffers
[0].BufferType
= SECBUFFER_STREAM_HEADER
;
1174 buffers
[1].pvBuffer
= sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
;
1175 buffers
[1].cbBuffer
= (unsigned long) chunk
;
1176 buffers
[1].BufferType
= SECBUFFER_DATA
;
1177 buffers
[2].pvBuffer
= sspi
->writeBuffer
+ sspi
->streamSizes
.cbHeader
+ chunk
;
1178 buffers
[2].cbBuffer
= sspi
->streamSizes
.cbTrailer
;
1179 buffers
[2].BufferType
= SECBUFFER_STREAM_TRAILER
;
1180 buffers
[3].BufferType
= SECBUFFER_EMPTY
;
1186 scRet
= EncryptMessage(&sspi
->context
, 0, &message
, 0);
1190 DEBUG_printf(("_httpTLSWrite: EncryptMessage failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1191 WSASetLastError(WSASYSCALLFAILURE
);
1196 * Send the data. Remember the size of the total data to send is the size
1197 * of the header, the size of the data the caller passed in and the size
1201 num
= send(http
->fd
, sspi
->writeBuffer
, buffers
[0].cbBuffer
+ buffers
[1].cbBuffer
+ buffers
[2].cbBuffer
, 0);
1205 DEBUG_printf(("_httpTLSWrite: send failed: %ld", WSAGetLastError()));
1219 * 'http_setup_ssl()' - Set up SSL/TLS support on a connection.
1222 static int /* O - 0 on success, -1 on failure */
1223 http_setup_ssl(http_t
*http
) /* I - Connection to server */
1225 char hostname
[256], /* Hostname */
1226 *hostptr
; /* Pointer into hostname */
1228 TCHAR username
[256]; /* Username returned from GetUserName() */
1229 TCHAR commonName
[256];/* Common name for certificate */
1230 DWORD dwSize
; /* 32 bit size */
1233 DEBUG_printf(("7http_setup_ssl(http=%p)", http
));
1236 * Get the hostname to use for SSL...
1239 if (httpAddrLocalhost(http
->hostaddr
))
1241 strlcpy(hostname
, "localhost", sizeof(hostname
));
1246 * Otherwise make sure the hostname we have does not end in a trailing dot.
1249 strlcpy(hostname
, http
->hostname
, sizeof(hostname
));
1250 if ((hostptr
= hostname
+ strlen(hostname
) - 1) >= hostname
&&
1255 http
->tls
= http_sspi_alloc();
1259 _cupsSetHTTPError(HTTP_STATUS_ERROR
);
1263 dwSize
= sizeof(username
) / sizeof(TCHAR
);
1264 GetUserName(username
, &dwSize
);
1265 _sntprintf_s(commonName
, sizeof(commonName
) / sizeof(TCHAR
),
1266 sizeof(commonName
) / sizeof(TCHAR
), TEXT("CN=%s"), username
);
1268 if (!_sspiGetCredentials(http
->tls
, L
"ClientContainer",
1271 _sspiFree(http
->tls
);
1275 http
->status
= HTTP_STATUS_ERROR
;
1277 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
,
1278 _("Unable to establish a secure connection to host."), 1);
1283 _sspiSetAllowsAnyRoot(http
->tls
, TRUE
);
1284 _sspiSetAllowsExpiredCerts(http
->tls
, TRUE
);
1286 if (!_sspiConnect(http
->tls
, hostname
))
1288 _sspiFree(http
->tls
);
1292 http
->status
= HTTP_STATUS_ERROR
;
1294 _cupsSetError(IPP_STATUS_ERROR_CUPS_PKI
,
1295 _("Unable to establish a secure connection to host."), 1);
1306 * 'http_sspi_alloc()' - Allocate SSPI object.
1309 static _http_sspi_t
* /* O - New SSPI/SSL object */
1310 http_sspi_alloc(void)
1312 return ((_http_sspi_t
*)calloc(sizeof(_http_sspi_t
), 1));
1317 * 'http_sspi_client()' - Negotiate a TLS connection as a client.
1320 static int /* O - 0 on success, -1 on failure */
1321 http_sspi_client(http_t
*http
, /* I - Client connection */
1322 const char *hostname
) /* I - Server hostname */
1324 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1325 DWORD dwSize
; /* Size for buffer */
1326 DWORD dwSSPIFlags
; /* SSL connection attributes we want */
1327 DWORD dwSSPIOutFlags
; /* SSL connection attributes we got */
1328 TimeStamp tsExpiry
; /* Time stamp */
1329 SECURITY_STATUS scRet
; /* Status */
1330 int cbData
; /* Data count */
1331 SecBufferDesc inBuffer
; /* Array of SecBuffer structs */
1332 SecBuffer inBuffers
[2]; /* Security package buffer */
1333 SecBufferDesc outBuffer
; /* Array of SecBuffer structs */
1334 SecBuffer outBuffers
[1]; /* Security package buffer */
1335 int ret
= 0; /* Return value */
1336 char username
[1024], /* Current username */
1337 common_name
[1024]; /* CN=username */
1340 DEBUG_printf(("4http_sspi_client(http=%p, hostname=\"%s\")", http
, hostname
));
1342 dwSSPIFlags
= ISC_REQ_SEQUENCE_DETECT
|
1343 ISC_REQ_REPLAY_DETECT
|
1344 ISC_REQ_CONFIDENTIALITY
|
1345 ISC_RET_EXTENDED_ERROR
|
1346 ISC_REQ_ALLOCATE_MEMORY
|
1350 * Lookup the client certificate...
1353 dwSize
= sizeof(username
);
1354 GetUserName(username
, &dwSize
);
1355 snprintf(common_name
, sizeof(common_name
), "CN=%s", username
);
1357 if (!http_sspi_find_credentials(http
, L
"ClientContainer", common_name
))
1358 if (!http_sspi_make_credentials(http
->tls
, L
"ClientContainer", common_name
, _HTTP_MODE_CLIENT
, 10))
1360 DEBUG_puts("5http_sspi_client: Unable to get client credentials.");
1365 * Initiate a ClientHello message and generate a token.
1368 outBuffers
[0].pvBuffer
= NULL
;
1369 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1370 outBuffers
[0].cbBuffer
= 0;
1372 outBuffer
.cBuffers
= 1;
1373 outBuffer
.pBuffers
= outBuffers
;
1374 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
1376 scRet
= InitializeSecurityContext(&sspi
->creds
, NULL
, TEXT(""), dwSSPIFlags
, 0, SECURITY_NATIVE_DREP
, NULL
, 0, &sspi
->context
, &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
1378 if (scRet
!= SEC_I_CONTINUE_NEEDED
)
1380 DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(1) failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1385 * Send response to server if there is one.
1388 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
1390 if ((cbData
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0)) <= 0)
1392 DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError()));
1393 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1394 DeleteSecurityContext(&sspi
->context
);
1398 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData
));
1400 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1401 outBuffers
[0].pvBuffer
= NULL
;
1404 dwSSPIFlags
= ISC_REQ_MANUAL_CRED_VALIDATION
|
1405 ISC_REQ_SEQUENCE_DETECT
|
1406 ISC_REQ_REPLAY_DETECT
|
1407 ISC_REQ_CONFIDENTIALITY
|
1408 ISC_RET_EXTENDED_ERROR
|
1409 ISC_REQ_ALLOCATE_MEMORY
|
1412 sspi
->decryptBufferUsed
= 0;
1415 * Loop until the handshake is finished or an error occurs.
1418 scRet
= SEC_I_CONTINUE_NEEDED
;
1420 while(scRet
== SEC_I_CONTINUE_NEEDED
||
1421 scRet
== SEC_E_INCOMPLETE_MESSAGE
||
1422 scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
1424 if (sspi
->decryptBufferUsed
== 0 || scRet
== SEC_E_INCOMPLETE_MESSAGE
)
1426 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
1428 BYTE
*temp
; /* New buffer */
1430 if (sspi
->decryptBufferLength
>= 262144)
1432 WSASetLastError(E_OUTOFMEMORY
);
1433 DEBUG_puts("5http_sspi_client: Decryption buffer too large (>256k)");
1437 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
1439 DEBUG_printf(("5http_sspi_client: Unable to allocate %d byte buffer.", sspi
->decryptBufferLength
+ 4096));
1440 WSASetLastError(E_OUTOFMEMORY
);
1444 sspi
->decryptBufferLength
+= 4096;
1445 sspi
->decryptBuffer
= temp
;
1448 cbData
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
1452 DEBUG_printf(("5http_sspi_client: recv failed: %d", WSAGetLastError()));
1455 else if (cbData
== 0)
1457 DEBUG_printf(("5http_sspi_client: Server unexpectedly disconnected."));
1461 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data received", cbData
));
1463 sspi
->decryptBufferUsed
+= cbData
;
1467 * Set up the input buffers. Buffer 0 is used to pass in data received from
1468 * the server. Schannel will consume some or all of this. Leftover data
1469 * (if any) will be placed in buffer 1 and given a buffer type of
1473 inBuffers
[0].pvBuffer
= sspi
->decryptBuffer
;
1474 inBuffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
1475 inBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1477 inBuffers
[1].pvBuffer
= NULL
;
1478 inBuffers
[1].cbBuffer
= 0;
1479 inBuffers
[1].BufferType
= SECBUFFER_EMPTY
;
1481 inBuffer
.cBuffers
= 2;
1482 inBuffer
.pBuffers
= inBuffers
;
1483 inBuffer
.ulVersion
= SECBUFFER_VERSION
;
1486 * Set up the output buffers. These are initialized to NULL so as to make it
1487 * less likely we'll attempt to free random garbage later.
1490 outBuffers
[0].pvBuffer
= NULL
;
1491 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
1492 outBuffers
[0].cbBuffer
= 0;
1494 outBuffer
.cBuffers
= 1;
1495 outBuffer
.pBuffers
= outBuffers
;
1496 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
1499 * Call InitializeSecurityContext.
1502 scRet
= InitializeSecurityContext(&sspi
->creds
, &sspi
->context
, NULL
, dwSSPIFlags
, 0, SECURITY_NATIVE_DREP
, &inBuffer
, 0, NULL
, &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
1505 * If InitializeSecurityContext was successful (or if the error was one of
1506 * the special extended ones), send the contents of the output buffer to the
1510 if (scRet
== SEC_E_OK
||
1511 scRet
== SEC_I_CONTINUE_NEEDED
||
1512 FAILED(scRet
) && (dwSSPIOutFlags
& ISC_RET_EXTENDED_ERROR
))
1514 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
1516 cbData
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0);
1520 DEBUG_printf(("5http_sspi_client: send failed: %d", WSAGetLastError()));
1521 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1522 DeleteSecurityContext(&sspi
->context
);
1526 DEBUG_printf(("5http_sspi_client: %d bytes of handshake data sent.", cbData
));
1529 * Free output buffer.
1532 FreeContextBuffer(outBuffers
[0].pvBuffer
);
1533 outBuffers
[0].pvBuffer
= NULL
;
1538 * If InitializeSecurityContext returned SEC_E_INCOMPLETE_MESSAGE, then we
1539 * need to read more data from the server and try again.
1542 if (scRet
== SEC_E_INCOMPLETE_MESSAGE
)
1546 * If InitializeSecurityContext returned SEC_E_OK, then the handshake
1547 * completed successfully.
1550 if (scRet
== SEC_E_OK
)
1553 * If the "extra" buffer contains data, this is encrypted application
1554 * protocol layer stuff. It needs to be saved. The application layer will
1555 * later decrypt it with DecryptMessage.
1558 DEBUG_puts("5http_sspi_client: Handshake was successful.");
1560 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
1562 memmove(sspi
->decryptBuffer
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
, inBuffers
[1].cbBuffer
);
1564 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
1566 DEBUG_printf(("5http_sspi_client: %d bytes of app data was bundled with handshake data", sspi
->decryptBufferUsed
));
1569 sspi
->decryptBufferUsed
= 0;
1579 * Check for fatal error.
1584 DEBUG_printf(("5http_sspi_client: InitializeSecurityContext(2) failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1590 * If InitializeSecurityContext returned SEC_I_INCOMPLETE_CREDENTIALS,
1591 * then the server just requested client authentication.
1594 if (scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
1600 DEBUG_printf(("5http_sspi_client: server requested client credentials."));
1606 * Copy any leftover data from the "extra" buffer, and go around again.
1609 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
1611 memmove(sspi
->decryptBuffer
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
, inBuffers
[1].cbBuffer
);
1613 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
1617 sspi
->decryptBufferUsed
= 0;
1624 * Success! Get the server cert
1627 sspi
->contextInitialized
= TRUE
;
1629 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_REMOTE_CERT_CONTEXT
, (VOID
*)&(sspi
->remoteCert
));
1631 if (scRet
!= SEC_E_OK
)
1633 DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_REMOTE_CERT_CONTEXT): %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1638 * Find out how big the header/trailer will be:
1641 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_STREAM_SIZES
, &sspi
->streamSizes
);
1643 if (scRet
!= SEC_E_OK
)
1645 DEBUG_printf(("5http_sspi_client: QueryContextAttributes failed(SECPKG_ATTR_STREAM_SIZES): %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
1655 * 'http_sspi_create_credential()' - Create an SSPI certificate context.
1658 static PCCERT_CONTEXT
/* O - Certificate context */
1659 http_sspi_create_credential(
1660 http_credential_t
*cred
) /* I - Credential */
1663 return (CertCreateCertificateContext(X509_ASN_ENCODING
, cred
->data
, cred
->datalen
));
1670 * 'http_sspi_find_credentials()' - Retrieve a TLS certificate from the system store.
1673 static BOOL
/* O - 1 on success, 0 on failure */
1674 http_sspi_find_credentials(
1675 http_t
*http
, /* I - HTTP connection */
1676 const LPWSTR container
, /* I - Cert container name */
1677 const char *common_name
) /* I - Common name of certificate */
1679 _http_sspi_t
*sspi
= http
->tls
; /* SSPI data */
1680 HCERTSTORE store
= NULL
; /* Certificate store */
1681 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
1682 DWORD dwSize
= 0; /* 32 bit size */
1683 PBYTE p
= NULL
; /* Temporary storage */
1684 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
1685 /* Handle to a CSP */
1686 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
1687 SCHANNEL_CRED SchannelCred
; /* Schannel credential data */
1688 TimeStamp tsExpiry
; /* Time stamp */
1689 SECURITY_STATUS Status
; /* Status */
1690 BOOL ok
= TRUE
; /* Return value */
1693 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
1695 if (GetLastError() == NTE_EXISTS
)
1697 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
1699 DEBUG_printf(("5http_sspi_find_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1706 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");
1710 DEBUG_printf(("5http_sspi_find_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1717 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
1719 DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1724 p
= (PBYTE
)malloc(dwSize
);
1728 DEBUG_printf(("5http_sspi_find_credentials: malloc failed for %d bytes.", dwSize
));
1733 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
1735 DEBUG_printf(("5http_sspi_find_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1740 sib
.cbData
= dwSize
;
1743 storedContext
= CertFindCertificateInStore(store
, X509_ASN_ENCODING
| PKCS_7_ASN_ENCODING
, 0, CERT_FIND_SUBJECT_NAME
, &sib
, NULL
);
1747 DEBUG_printf(("5http_sspi_find_credentials: Unable to find credentials for \"%s\".", common_name
));
1752 ZeroMemory(&SchannelCred
, sizeof(SchannelCred
));
1754 SchannelCred
.dwVersion
= SCHANNEL_CRED_VERSION
;
1755 SchannelCred
.cCreds
= 1;
1756 SchannelCred
.paCred
= &storedContext
;
1759 * Set supported protocols (can also be overriden in the registry...)
1762 #ifdef SP_PROT_TLS1_2_SERVER
1763 if (http
->mode
== _HTTP_MODE_SERVER
)
1765 if (tls_options
& _HTTP_TLS_DENY_TLS10
)
1766 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_SERVER
| SP_PROT_TLS1_1_SERVER
;
1767 else if (tls_options
& _HTTP_TLS_ALLOW_SSL3
)
1768 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_SERVER
| SP_PROT_TLS1_1_SERVER
| SP_PROT_TLS1_0_SERVER
| SP_PROT_SSL3_SERVER
;
1770 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_SERVER
| SP_PROT_TLS1_1_SERVER
| SP_PROT_TLS1_0_SERVER
;
1774 if (tls_options
& _HTTP_TLS_DENY_TLS10
)
1775 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_CLIENT
| SP_PROT_TLS1_1_CLIENT
;
1776 else if (tls_options
& _HTTP_TLS_ALLOW_SSL3
)
1777 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_CLIENT
| SP_PROT_TLS1_1_CLIENT
| SP_PROT_TLS1_0_CLIENT
| SP_PROT_SSL3_CLIENT
;
1779 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_2_CLIENT
| SP_PROT_TLS1_1_CLIENT
| SP_PROT_TLS1_0_CLIENT
;
1783 if (http
->mode
== _HTTP_MODE_SERVER
)
1785 if (tls_options
& _HTTP_TLS_ALLOW_SSL3
)
1786 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_SERVER
| SP_PROT_SSL3_SERVER
;
1788 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_SERVER
;
1792 if (tls_options
& _HTTP_TLS_ALLOW_SSL3
)
1793 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_CLIENT
| SP_PROT_SSL3_CLIENT
;
1795 SchannelCred
.grbitEnabledProtocols
= SP_PROT_TLS1_CLIENT
;
1797 #endif /* SP_PROT_TLS1_2_SERVER */
1799 /* TODO: Support _HTTP_TLS_ALLOW_RC4, _HTTP_TLS_ALLOW_DH, and _HTTP_TLS_DENY_CBC options; right now we'll rely on Windows registry to enable/disable RC4/DH/CBC... */
1802 * Create an SSPI credential.
1805 Status
= AcquireCredentialsHandle(NULL
, UNISP_NAME
, http
->mode
== _HTTP_MODE_SERVER
? SECPKG_CRED_INBOUND
: SECPKG_CRED_OUTBOUND
, NULL
, &SchannelCred
, NULL
, NULL
, &sspi
->creds
, &tsExpiry
);
1806 if (Status
!= SEC_E_OK
)
1808 DEBUG_printf(("5http_sspi_find_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), Status
)));
1820 CertFreeCertificateContext(storedContext
);
1826 CertCloseStore(store
, 0);
1829 CryptReleaseContext(hProv
, 0);
1836 * 'http_sspi_free()' - Close a connection and free resources.
1840 http_sspi_free(_http_sspi_t
*sspi
) /* I - SSPI data */
1845 if (sspi
->contextInitialized
)
1846 DeleteSecurityContext(&sspi
->context
);
1848 if (sspi
->decryptBuffer
)
1849 free(sspi
->decryptBuffer
);
1851 if (sspi
->readBuffer
)
1852 free(sspi
->readBuffer
);
1854 if (sspi
->writeBuffer
)
1855 free(sspi
->writeBuffer
);
1857 if (sspi
->localCert
)
1858 CertFreeCertificateContext(sspi
->localCert
);
1860 if (sspi
->remoteCert
)
1861 CertFreeCertificateContext(sspi
->remoteCert
);
1868 * 'http_sspi_make_credentials()' - Create a TLS certificate in the system store.
1871 static BOOL
/* O - 1 on success, 0 on failure */
1872 http_sspi_make_credentials(
1873 _http_sspi_t
*sspi
, /* I - SSPI data */
1874 const LPWSTR container
, /* I - Cert container name */
1875 const char *common_name
, /* I - Common name of certificate */
1876 _http_mode_t mode
, /* I - Client or server? */
1877 int years
) /* I - Years until expiration */
1879 HCERTSTORE store
= NULL
; /* Certificate store */
1880 PCCERT_CONTEXT storedContext
= NULL
; /* Context created from the store */
1881 PCCERT_CONTEXT createdContext
= NULL
; /* Context created by us */
1882 DWORD dwSize
= 0; /* 32 bit size */
1883 PBYTE p
= NULL
; /* Temporary storage */
1884 HCRYPTPROV hProv
= (HCRYPTPROV
)NULL
;
1885 /* Handle to a CSP */
1886 CERT_NAME_BLOB sib
; /* Arbitrary array of bytes */
1887 SCHANNEL_CRED SchannelCred
; /* Schannel credential data */
1888 TimeStamp tsExpiry
; /* Time stamp */
1889 SECURITY_STATUS Status
; /* Status */
1890 HCRYPTKEY hKey
= (HCRYPTKEY
)NULL
; /* Handle to crypto key */
1891 CRYPT_KEY_PROV_INFO kpi
; /* Key container info */
1892 SYSTEMTIME et
; /* System time */
1893 CERT_EXTENSIONS exts
; /* Array of cert extensions */
1894 CRYPT_KEY_PROV_INFO ckp
; /* Handle to crypto key */
1895 BOOL ok
= TRUE
; /* Return value */
1898 DEBUG_printf(("4http_sspi_make_credentials(sspi=%p, container=%p, common_name=\"%s\", mode=%d, years=%d)", sspi
, container
, common_name
, mode
, years
));
1900 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_NEWKEYSET
| CRYPT_MACHINE_KEYSET
))
1902 if (GetLastError() == NTE_EXISTS
)
1904 if (!CryptAcquireContextW(&hProv
, (LPWSTR
)container
, MS_DEF_PROV_W
, PROV_RSA_FULL
, CRYPT_MACHINE_KEYSET
))
1906 DEBUG_printf(("5http_sspi_make_credentials: CryptAcquireContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1913 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");
1917 DEBUG_printf(("5http_sspi_make_credentials: CertOpenSystemStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1924 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, NULL
, &dwSize
, NULL
))
1926 DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1931 p
= (PBYTE
)malloc(dwSize
);
1935 DEBUG_printf(("5http_sspi_make_credentials: malloc failed for %d bytes", dwSize
));
1940 if (!CertStrToName(X509_ASN_ENCODING
, common_name
, CERT_OID_NAME_STR
, NULL
, p
, &dwSize
, NULL
))
1942 DEBUG_printf(("5http_sspi_make_credentials: CertStrToName failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1948 * Create a private key and self-signed certificate...
1951 if (!CryptGenKey(hProv
, AT_KEYEXCHANGE
, CRYPT_EXPORTABLE
, &hKey
))
1953 DEBUG_printf(("5http_sspi_make_credentials: CryptGenKey failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1958 ZeroMemory(&kpi
, sizeof(kpi
));
1959 kpi
.pwszContainerName
= (LPWSTR
)container
;
1960 kpi
.pwszProvName
= MS_DEF_PROV_W
;
1961 kpi
.dwProvType
= PROV_RSA_FULL
;
1962 kpi
.dwFlags
= CERT_SET_KEY_CONTEXT_PROP_ID
;
1963 kpi
.dwKeySpec
= AT_KEYEXCHANGE
;
1968 ZeroMemory(&exts
, sizeof(exts
));
1970 createdContext
= CertCreateSelfSignCertificate(hProv
, &sib
, 0, &kpi
, NULL
, NULL
, &et
, &exts
);
1972 if (!createdContext
)
1974 DEBUG_printf(("5http_sspi_make_credentials: CertCreateSelfSignCertificate failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1980 * Add the created context to the named store, and associate it with the named
1984 if (!CertAddCertificateContextToStore(store
, createdContext
, CERT_STORE_ADD_REPLACE_EXISTING
, &storedContext
))
1986 DEBUG_printf(("5http_sspi_make_credentials: CertAddCertificateContextToStore failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
1991 ZeroMemory(&ckp
, sizeof(ckp
));
1992 ckp
.pwszContainerName
= (LPWSTR
) container
;
1993 ckp
.pwszProvName
= MS_DEF_PROV_W
;
1994 ckp
.dwProvType
= PROV_RSA_FULL
;
1995 ckp
.dwFlags
= CRYPT_MACHINE_KEYSET
;
1996 ckp
.dwKeySpec
= AT_KEYEXCHANGE
;
1998 if (!CertSetCertificateContextProperty(storedContext
, CERT_KEY_PROV_INFO_PROP_ID
, 0, &ckp
))
2000 DEBUG_printf(("5http_sspi_make_credentials: CertSetCertificateContextProperty failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), GetLastError())));
2006 * Get a handle to use the certificate...
2009 ZeroMemory(&SchannelCred
, sizeof(SchannelCred
));
2011 SchannelCred
.dwVersion
= SCHANNEL_CRED_VERSION
;
2012 SchannelCred
.cCreds
= 1;
2013 SchannelCred
.paCred
= &storedContext
;
2016 * SSPI doesn't seem to like it if grbitEnabledProtocols is set for a client.
2019 if (mode
== _HTTP_MODE_SERVER
)
2020 SchannelCred
.grbitEnabledProtocols
= SP_PROT_SSL3TLS1
;
2023 * Create an SSPI credential.
2026 Status
= AcquireCredentialsHandle(NULL
, UNISP_NAME
, mode
== _HTTP_MODE_SERVER
? SECPKG_CRED_INBOUND
: SECPKG_CRED_OUTBOUND
, NULL
, &SchannelCred
, NULL
, NULL
, &sspi
->creds
, &tsExpiry
);
2027 if (Status
!= SEC_E_OK
)
2029 DEBUG_printf(("5http_sspi_make_credentials: AcquireCredentialsHandle failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), Status
)));
2041 CryptDestroyKey(hKey
);
2044 CertFreeCertificateContext(createdContext
);
2047 CertFreeCertificateContext(storedContext
);
2053 CertCloseStore(store
, 0);
2056 CryptReleaseContext(hProv
, 0);
2063 * 'http_sspi_server()' - Negotiate a TLS connection as a server.
2066 static int /* O - 0 on success, -1 on failure */
2067 http_sspi_server(http_t
*http
, /* I - HTTP connection */
2068 const char *hostname
) /* I - Hostname of server */
2070 _http_sspi_t
*sspi
= http
->tls
; /* I - SSPI data */
2071 char common_name
[512]; /* Common name for cert */
2072 DWORD dwSSPIFlags
; /* SSL connection attributes we want */
2073 DWORD dwSSPIOutFlags
; /* SSL connection attributes we got */
2074 TimeStamp tsExpiry
; /* Time stamp */
2075 SECURITY_STATUS scRet
; /* SSPI Status */
2076 SecBufferDesc inBuffer
; /* Array of SecBuffer structs */
2077 SecBuffer inBuffers
[2]; /* Security package buffer */
2078 SecBufferDesc outBuffer
; /* Array of SecBuffer structs */
2079 SecBuffer outBuffers
[1]; /* Security package buffer */
2080 int num
= 0; /* 32 bit status value */
2081 BOOL fInitContext
= TRUE
; /* Has the context been init'd? */
2082 int ret
= 0; /* Return value */
2085 DEBUG_printf(("4http_sspi_server(http=%p, hostname=\"%s\")", http
, hostname
));
2087 dwSSPIFlags
= ASC_REQ_SEQUENCE_DETECT
|
2088 ASC_REQ_REPLAY_DETECT
|
2089 ASC_REQ_CONFIDENTIALITY
|
2090 ASC_REQ_EXTENDED_ERROR
|
2091 ASC_REQ_ALLOCATE_MEMORY
|
2094 sspi
->decryptBufferUsed
= 0;
2097 * Lookup the server certificate...
2100 snprintf(common_name
, sizeof(common_name
), "CN=%s", hostname
);
2102 if (!http_sspi_find_credentials(http
, L
"ServerContainer", common_name
))
2103 if (!http_sspi_make_credentials(http
->tls
, L
"ServerContainer", common_name
, _HTTP_MODE_SERVER
, 10))
2105 DEBUG_puts("5http_sspi_server: Unable to get server credentials.");
2110 * Set OutBuffer for AcceptSecurityContext call
2113 outBuffer
.cBuffers
= 1;
2114 outBuffer
.pBuffers
= outBuffers
;
2115 outBuffer
.ulVersion
= SECBUFFER_VERSION
;
2117 scRet
= SEC_I_CONTINUE_NEEDED
;
2119 while (scRet
== SEC_I_CONTINUE_NEEDED
||
2120 scRet
== SEC_E_INCOMPLETE_MESSAGE
||
2121 scRet
== SEC_I_INCOMPLETE_CREDENTIALS
)
2123 if (sspi
->decryptBufferUsed
== 0 || scRet
== SEC_E_INCOMPLETE_MESSAGE
)
2125 if (sspi
->decryptBufferLength
<= sspi
->decryptBufferUsed
)
2127 BYTE
*temp
; /* New buffer */
2129 if (sspi
->decryptBufferLength
>= 262144)
2131 WSASetLastError(E_OUTOFMEMORY
);
2132 DEBUG_puts("5http_sspi_server: Decryption buffer too large (>256k)");
2136 if ((temp
= realloc(sspi
->decryptBuffer
, sspi
->decryptBufferLength
+ 4096)) == NULL
)
2138 DEBUG_printf(("5http_sspi_server: Unable to allocate %d byte buffer.", sspi
->decryptBufferLength
+ 4096));
2139 WSASetLastError(E_OUTOFMEMORY
);
2143 sspi
->decryptBufferLength
+= 4096;
2144 sspi
->decryptBuffer
= temp
;
2149 num
= recv(http
->fd
, sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
, (int)(sspi
->decryptBufferLength
- sspi
->decryptBufferUsed
), 0);
2151 if (num
== -1 && WSAGetLastError() == WSAEWOULDBLOCK
)
2159 DEBUG_printf(("5http_sspi_server: recv failed: %d", WSAGetLastError()));
2164 DEBUG_puts("5http_sspi_server: client disconnected");
2168 DEBUG_printf(("5http_sspi_server: received %d (handshake) bytes from client.", num
));
2169 sspi
->decryptBufferUsed
+= num
;
2173 * InBuffers[1] is for getting extra data that SSPI/SCHANNEL doesn't process
2174 * on this run around the loop.
2177 inBuffers
[0].pvBuffer
= sspi
->decryptBuffer
;
2178 inBuffers
[0].cbBuffer
= (unsigned long)sspi
->decryptBufferUsed
;
2179 inBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
2181 inBuffers
[1].pvBuffer
= NULL
;
2182 inBuffers
[1].cbBuffer
= 0;
2183 inBuffers
[1].BufferType
= SECBUFFER_EMPTY
;
2185 inBuffer
.cBuffers
= 2;
2186 inBuffer
.pBuffers
= inBuffers
;
2187 inBuffer
.ulVersion
= SECBUFFER_VERSION
;
2190 * Initialize these so if we fail, pvBuffer contains NULL, so we don't try to
2191 * free random garbage at the quit.
2194 outBuffers
[0].pvBuffer
= NULL
;
2195 outBuffers
[0].BufferType
= SECBUFFER_TOKEN
;
2196 outBuffers
[0].cbBuffer
= 0;
2198 scRet
= AcceptSecurityContext(&sspi
->creds
, (fInitContext
?NULL
:&sspi
->context
), &inBuffer
, dwSSPIFlags
, SECURITY_NATIVE_DREP
, (fInitContext
?&sspi
->context
:NULL
), &outBuffer
, &dwSSPIOutFlags
, &tsExpiry
);
2200 fInitContext
= FALSE
;
2202 if (scRet
== SEC_E_OK
||
2203 scRet
== SEC_I_CONTINUE_NEEDED
||
2204 (FAILED(scRet
) && ((dwSSPIOutFlags
& ISC_RET_EXTENDED_ERROR
) != 0)))
2206 if (outBuffers
[0].cbBuffer
&& outBuffers
[0].pvBuffer
)
2209 * Send response to server if there is one.
2212 num
= send(http
->fd
, outBuffers
[0].pvBuffer
, outBuffers
[0].cbBuffer
, 0);
2216 DEBUG_printf(("5http_sspi_server: handshake send failed: %d", WSAGetLastError()));
2220 DEBUG_printf(("5http_sspi_server: sent %d handshake bytes to client.", outBuffers
[0].cbBuffer
));
2222 FreeContextBuffer(outBuffers
[0].pvBuffer
);
2223 outBuffers
[0].pvBuffer
= NULL
;
2227 if (scRet
== SEC_E_OK
)
2230 * If there's extra data then save it for next time we go to decrypt.
2233 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
2235 memcpy(sspi
->decryptBuffer
, (LPBYTE
)(sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
), inBuffers
[1].cbBuffer
);
2236 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
2240 sspi
->decryptBufferUsed
= 0;
2244 else if (FAILED(scRet
) && scRet
!= SEC_E_INCOMPLETE_MESSAGE
)
2246 DEBUG_printf(("5http_sspi_server: AcceptSecurityContext failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
2251 if (scRet
!= SEC_E_INCOMPLETE_MESSAGE
&&
2252 scRet
!= SEC_I_INCOMPLETE_CREDENTIALS
)
2254 if (inBuffers
[1].BufferType
== SECBUFFER_EXTRA
)
2256 memcpy(sspi
->decryptBuffer
, (LPBYTE
)(sspi
->decryptBuffer
+ sspi
->decryptBufferUsed
- inBuffers
[1].cbBuffer
), inBuffers
[1].cbBuffer
);
2257 sspi
->decryptBufferUsed
= inBuffers
[1].cbBuffer
;
2261 sspi
->decryptBufferUsed
= 0;
2268 sspi
->contextInitialized
= TRUE
;
2271 * Find out how big the header will be:
2274 scRet
= QueryContextAttributes(&sspi
->context
, SECPKG_ATTR_STREAM_SIZES
, &sspi
->streamSizes
);
2276 if (scRet
!= SEC_E_OK
)
2278 DEBUG_printf(("5http_sspi_server: QueryContextAttributes failed: %s", http_sspi_strerror(sspi
->error
, sizeof(sspi
->error
), scRet
)));
2288 * 'http_sspi_strerror()' - Return a string for the specified error code.
2291 static const char * /* O - String for error */
2292 http_sspi_strerror(char *buffer
, /* I - Error message buffer */
2293 size_t bufsize
, /* I - Size of buffer */
2294 DWORD code
) /* I - Error code */
2296 if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
, NULL
, code
, 0, buffer
, bufsize
, NULL
))
2299 * Strip trailing CR + LF...
2302 char *ptr
; /* Pointer into error message */
2304 for (ptr
= buffer
+ strlen(buffer
) - 1; ptr
>= buffer
; ptr
--)
2305 if (*ptr
== '\n' || *ptr
== '\r')
2311 snprintf(buffer
, bufsize
, "Unknown error %x", code
);
2318 * 'http_sspi_verify()' - Verify a certificate.
2321 static DWORD
/* O - Error code (0 == No error) */
2323 PCCERT_CONTEXT cert
, /* I - Server certificate */
2324 const char *common_name
, /* I - Common name */
2325 DWORD dwCertFlags
) /* I - Verification flags */
2327 HTTPSPolicyCallbackData httpsPolicy
; /* HTTPS Policy Struct */
2328 CERT_CHAIN_POLICY_PARA policyPara
; /* Cert chain policy parameters */
2329 CERT_CHAIN_POLICY_STATUS policyStatus
;/* Cert chain policy status */
2330 CERT_CHAIN_PARA chainPara
; /* Used for searching and matching criteria */
2331 PCCERT_CHAIN_CONTEXT chainContext
= NULL
;
2332 /* Certificate chain */
2333 PWSTR commonNameUnicode
= NULL
;
2334 /* Unicode common name */
2335 LPSTR rgszUsages
[] = { szOID_PKIX_KP_SERVER_AUTH
,
2336 szOID_SERVER_GATED_CRYPTO
,
2337 szOID_SGC_NETSCAPE
};
2338 /* How are we using this certificate? */
2339 DWORD cUsages
= sizeof(rgszUsages
) / sizeof(LPSTR
);
2340 /* Number of ites in rgszUsages */
2341 DWORD count
; /* 32 bit count variable */
2342 DWORD status
; /* Return value */
2344 char error
[1024]; /* Error message string */
2349 return (SEC_E_WRONG_PRINCIPAL
);
2352 * Convert common name to Unicode.
2355 if (!common_name
|| !*common_name
)
2356 return (SEC_E_WRONG_PRINCIPAL
);
2358 count
= MultiByteToWideChar(CP_ACP
, 0, common_name
, -1, NULL
, 0);
2359 commonNameUnicode
= LocalAlloc(LMEM_FIXED
, count
* sizeof(WCHAR
));
2360 if (!commonNameUnicode
)
2361 return (SEC_E_INSUFFICIENT_MEMORY
);
2363 if (!MultiByteToWideChar(CP_ACP
, 0, common_name
, -1, commonNameUnicode
, count
))
2365 LocalFree(commonNameUnicode
);
2366 return (SEC_E_WRONG_PRINCIPAL
);
2370 * Build certificate chain.
2373 ZeroMemory(&chainPara
, sizeof(chainPara
));
2375 chainPara
.cbSize
= sizeof(chainPara
);
2376 chainPara
.RequestedUsage
.dwType
= USAGE_MATCH_TYPE_OR
;
2377 chainPara
.RequestedUsage
.Usage
.cUsageIdentifier
= cUsages
;
2378 chainPara
.RequestedUsage
.Usage
.rgpszUsageIdentifier
= rgszUsages
;
2380 if (!CertGetCertificateChain(NULL
, cert
, NULL
, cert
->hCertStore
, &chainPara
, 0, NULL
, &chainContext
))
2382 status
= GetLastError();
2384 DEBUG_printf(("CertGetCertificateChain returned: %s", http_sspi_strerror(error
, sizeof(error
), status
)));
2386 LocalFree(commonNameUnicode
);
2391 * Validate certificate chain.
2394 ZeroMemory(&httpsPolicy
, sizeof(HTTPSPolicyCallbackData
));
2395 httpsPolicy
.cbStruct
= sizeof(HTTPSPolicyCallbackData
);
2396 httpsPolicy
.dwAuthType
= AUTHTYPE_SERVER
;
2397 httpsPolicy
.fdwChecks
= dwCertFlags
;
2398 httpsPolicy
.pwszServerName
= commonNameUnicode
;
2400 memset(&policyPara
, 0, sizeof(policyPara
));
2401 policyPara
.cbSize
= sizeof(policyPara
);
2402 policyPara
.pvExtraPolicyPara
= &httpsPolicy
;
2404 memset(&policyStatus
, 0, sizeof(policyStatus
));
2405 policyStatus
.cbSize
= sizeof(policyStatus
);
2407 if (!CertVerifyCertificateChainPolicy(CERT_CHAIN_POLICY_SSL
, chainContext
, &policyPara
, &policyStatus
))
2409 status
= GetLastError();
2411 DEBUG_printf(("CertVerifyCertificateChainPolicy returned %s", http_sspi_strerror(error
, sizeof(error
), status
)));
2413 else if (policyStatus
.dwError
)
2414 status
= policyStatus
.dwError
;
2419 CertFreeCertificateChain(chainContext
);
2421 if (commonNameUnicode
)
2422 LocalFree(commonNameUnicode
);