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);