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1  #ifndef HEADER_CURL_SCHANNEL_H
2  #define HEADER_CURL_SCHANNEL_H
3  /***************************************************************************
4   *                                  _   _ ____  _
5   *  Project                     ___| | | |  _ \| |
6   *                             / __| | | | |_) | |
7   *                            | (__| |_| |  _ <| |___
8   *                             \___|\___/|_| \_\_____|
9   *
10   * Copyright (C) 2012, Marc Hoersken, <info@marc-hoersken.de>, et al.
11   * Copyright (C) 2012 - 2021, Daniel Stenberg, <daniel@haxx.se>, et al.
12   *
13   * This software is licensed as described in the file COPYING, which
14   * you should have received as part of this distribution. The terms
15   * are also available at https://curl.se/docs/copyright.html.
16   *
17   * You may opt to use, copy, modify, merge, publish, distribute and/or sell
18   * copies of the Software, and permit persons to whom the Software is
19   * furnished to do so, under the terms of the COPYING file.
20   *
21   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
22   * KIND, either express or implied.
23   *
24   ***************************************************************************/
25  #include "curl_setup.h"
26  
27  #ifdef USE_SCHANNEL
28  
29  #include <schnlsp.h>
30  #include <schannel.h>
31  #include "curl_sspi.h"
32  
33  #include "urldata.h"
34  
35  /* <wincrypt.h> has been included via the above <schnlsp.h>.
36   * Or in case of ldap.c, it was included via <winldap.h>.
37   * And since <wincrypt.h> has this:
38   *   #define X509_NAME  ((LPCSTR) 7)
39   *
40   * And in BoringSSL's <openssl/base.h> there is:
41   *  typedef struct X509_name_st X509_NAME;
42   *  etc.
43   *
44   * this will cause all kinds of C-preprocessing paste errors in
45   * BoringSSL's <openssl/x509.h>: So just undefine those defines here
46   * (and only here).
47   */
48  #if defined(HAVE_BORINGSSL) || defined(OPENSSL_IS_BORINGSSL)
49  # undef X509_NAME
50  # undef X509_CERT_PAIR
51  # undef X509_EXTENSIONS
52  #endif
53  
54  extern const struct Curl_ssl Curl_ssl_schannel;
55  
56  CURLcode Curl_verify_certificate(struct Curl_easy *data,
57                                   struct connectdata *conn, int sockindex);
58  
59  /* structs to expose only in schannel.c and schannel_verify.c */
60  #ifdef EXPOSE_SCHANNEL_INTERNAL_STRUCTS
61  
62  #ifdef __MINGW32__
63  #include <_mingw.h>
64  #ifdef __MINGW64_VERSION_MAJOR
65  #define HAS_MANUAL_VERIFY_API
66  #endif
67  #else
68  #include <wincrypt.h>
69  #ifdef CERT_CHAIN_REVOCATION_CHECK_CHAIN
70  #define HAS_MANUAL_VERIFY_API
71  #endif
72  #endif
73  
74  #define NUMOF_CIPHERS 45 /* There are 45 listed in the MS headers */
75  
76  struct Curl_schannel_cred {
77    CredHandle cred_handle;
78    TimeStamp time_stamp;
79    int refcount;
80  };
81  
82  struct Curl_schannel_ctxt {
83    CtxtHandle ctxt_handle;
84    TimeStamp time_stamp;
85  };
86  
87  struct ssl_backend_data {
88    struct Curl_schannel_cred *cred;
89    struct Curl_schannel_ctxt *ctxt;
90    SecPkgContext_StreamSizes stream_sizes;
91    size_t encdata_length, decdata_length;
92    size_t encdata_offset, decdata_offset;
93    unsigned char *encdata_buffer, *decdata_buffer;
94    /* encdata_is_incomplete: if encdata contains only a partial record that
95       can't be decrypted without another Curl_read_plain (that is, status is
96       SEC_E_INCOMPLETE_MESSAGE) then set this true. after Curl_read_plain writes
97       more bytes into encdata then set this back to false. */
98    bool encdata_is_incomplete;
99    unsigned long req_flags, ret_flags;
100    CURLcode recv_unrecoverable_err; /* schannel_recv had an unrecoverable err */
101    bool recv_sspi_close_notify; /* true if connection closed by close_notify */
102    bool recv_connection_closed; /* true if connection closed, regardless how */
103    bool use_alpn; /* true if ALPN is used for this connection */
104  #ifdef HAS_MANUAL_VERIFY_API
105    bool use_manual_cred_validation; /* true if manual cred validation is used */
106  #endif
107    ALG_ID algIds[NUMOF_CIPHERS];
108  };
109  #endif /* EXPOSE_SCHANNEL_INTERNAL_STRUCTS */
110  
111  #endif /* USE_SCHANNEL */
112  #endif /* HEADER_CURL_SCHANNEL_H */
113