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/openssl-master/doc/man3/
A DBIO_set_callback.pod8 - BIO callback functions
41 callback. The callback is called during most high-level BIO operations. It can
57 deprecated version of the same callback for use with the old callback
68 The BIO the callback is attached to is passed in B<b>.
109 In the notes below, B<callback> defers to the actual callback
120 callback(b, BIO_CB_FREE, NULL, 0L, 0L, 1L)
130 callback(b, BIO_CB_READ, data, dlen, 0L, 1L)
149 callback(b, BIO_CB_WRITE, datat, dlen, 0L, 1L)
168 callback(b, BIO_CB_GETS, buf, size, 0L, 1L)
187 callback(b, BIO_CB_PUTS, buf, 0, 0L, 1L)
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A DSSL_set_async_callback.pod20 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback);
22 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback);
30 supports the callback mechanism, it will be automatically called if
34 SSL_CTX_set_async_callback_arg() sets the callback argument.
36 SSL_set_async_callback() allows an application to set a callback in an
42 above callback is called.
58 Application sets the async callback and callback data on an SSL connection
69 async callback function would be called (goto Step 7).
84 The engine will call the application's callback passing the callback data as
89 The callback function should then run. Note: it is a requirement that the
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A DSSL_CTX_set_ct_validation_callback.pod20 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
23 ssl_ct_validation_cb callback,
35 This is accomplished by setting a built-in CT validation callback.
47 callback.
70 and the callback returns a non-positive result.
73 the callback.
74 This will be passed to the callback whenever it is invoked.
82 In that case the handshake continues as it would had no callback been
96 enabled via either SSL_enable_ct() or a non-null custom callback, and 0
124 validation callback is set, or 0 if no callback (or equivalently a NULL
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A DSSL_CTX_set_psk_client_callback.pod11 - set PSK client callback
45 The callback function is given a pointer to the SSL connection in B<ssl>.
98 this the callback should return successfully and ensure that B<*sess> is
105 The purpose of the callback function is to select the PSK identity and
108 The callback is set using functions SSL_CTX_set_psk_client_callback()
109 or SSL_set_psk_client_callback(). The callback function is given the
127 B<SSL_psk_use_session_cb_func> callback, and are not possible with the
128 B<SSL_psk_client_cb_func> callback.
132 Note that parameter B<hint> given to the callback may be B<NULL>.
150 On success (callback found a PSK identity and a pre-shared key to use)
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A DSSL_CTX_use_psk_identity_hint.pod42 A server application wishing to use TLSv1.3 PSKs should set a callback
46 The callback function is given a pointer to the SSL connection in B<ssl> and
47 an identity in B<identity> of length B<identity_len>. The callback function
55 callback should return successfully and ensure that B<*sess> is
69 callback function which is called when the server receives the
72 during the connection setup phase. The callback is set using the functions
78 The callback for use in TLSv1.2 will also work in TLSv1.3 although it is
88 callback, and are not possible with the B<SSL_psk_server_cb_func> callback.
110 PSK identity was found and the server callback has provided the PSK
115 If the PSK identity was not found but the callback instructs the
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A DOSSL_SELF_TEST_set_callback.pod6 OSSL_SELF_TEST_get_callback - specify a callback for processing self tests
17 Set or gets the optional application callback (and the callback argument) that
19 The application callback B<OSSL_CALLBACK> is associated with a B<OSSL_LIB_CTX>.
20 The application callback function receives information about a running self test,
22 See L<openssl-core.h(7)> for further information on the callback.
26 OSSL_SELF_TEST_get_callback() returns the callback and callback argument that
A DSSL_CTX_set_info_callback.pod9 - handle information callback for SSL connections
15 void SSL_CTX_set_info_callback(SSL_CTX *ctx, void (*callback)());
18 void SSL_set_info_callback(SSL *ssl, void (*callback)());
23 SSL_CTX_set_info_callback() sets the B<callback> function, that can be used to
27 When B<callback> is NULL, no callback function is used.
29 SSL_set_info_callback() sets the B<callback> function, that can be used to
31 When B<callback> is NULL, the callback setting currently valid for
35 callback function for B<ctx>.
38 callback function for B<ssl>.
47 The callback function is called as B<callback(SSL *ssl, int where, int ret)>.
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A DSSL_CTX_set_cert_verify_callback.pod12 int (*callback)(X509_STORE_CTX *, void *),
17 SSL_CTX_set_cert_verify_callback() sets the verification callback function for
27 If a verification callback I<callback> is specified via
28 SSL_CTX_set_cert_verify_callback(), the supplied callback function is called
30 The argument I<arg> is specified by the application when setting I<callback>.
31 By setting I<callback> to NULL, the default behaviour is restored.
33 I<callback> should return 1 to indicate verification success
41 In client mode I<callback> may also return -1,
55 the I<callback> allows the connection to continue (by returning 1).
64 Within I<x509_store_ctx>, I<callback> has access to the I<verify_callback>
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A DSSL_CTX_set_cert_cb.pod5 SSL_CTX_set_cert_cb, SSL_set_cert_cb - handle certificate callback function
17 SSL_CTX_set_cert_cb() and SSL_set_cert_cb() sets the I<cert_cb> callback,
18 I<arg> value is pointer which is passed to the application callback.
20 When I<cert_cb> is NULL, no callback function is used.
22 I<cert_cb> is the application defined callback. It is called before a
23 certificate will be used by a client or server. The callback can then inspect
25 the callback is successful it B<MUST> return 1 even if no certificates have
45 The certificate callback functionality supersedes the (largely broken)
46 functionality provided by the old client certificate callback interface.
50 A more advanced callback might examine the handshake parameters and set
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A DX509_STORE_CTX_set_verify_cb.pod19 - get and set X509_STORE_CTX components such as verification callback
46 X509_STORE_CTX_set_verify_cb() sets the verification callback of B<ctx> to
47 B<verify_cb> overwriting any existing callback.
56 The B<ok> parameter to the callback indicates the value the callback should
62 The B<ctx> parameter to the callback is the B<X509_STORE_CTX> structure that
63 is performing the verification operation. A callback can examine this
66 be passed to the callback via the B<ex_data> mechanism.
68 X509_STORE_CTX_print_verify_cb() is a verification callback function that,
74 X509_STORE_CTX_get_verify_cb() returns the value of the current callback
100 only way to set a custom verification callback is by inheriting it from the
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A DSSL_CTX_set_keylog_callback.pod19 SSL_CTX_set_keylog_callback() sets the TLS key logging callback. This callback
24 callback. If no callback has been set, this will return NULL. When there is no
25 key logging callback, or if SSL_CTX_set_keylog_callback is called with NULL as
28 The key logging callback is called with two items: the B<ssl> object associated
31 file, the key logging callback should log B<line>, followed by a newline.
37 NULL if the callback is not set.
A DOSSL_SELF_TEST_new.pod9 OSSL_SELF_TEST_onend - functionality to trigger a callback during a self test
29 callback and callback argument associated with it.
38 If this method is called the callback I<cb> will receive the following
51 passed in array of I<bytes> will be corrupted if the callback returns 0,
55 If this method is called the callback I<cb> will receive the following
69 If this method is called the callback I<cb> will receive the following
81 After the callback I<cb> has been called the values that were set by
86 passed to the callback.
93 This allows the callback to identify the type of test being run.
131 /* Trigger the optional callback */
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A DSSL_CTX_set_alpn_select_cb.pod57 SSL_CTX_set_alpn_select_cb() sets the application callback B<cb> used by a
60 the application callback.
78 function can also be used in the NPN callback.
83 For the callback itself, B<out>
87 callback can assume that B<in> is syntactically valid. The client must
98 reference to it. The callback should return B<SSL_TLSEXT_ERR_OK> if it
112 provided by the callback.
130 The ALPN callback is executed after the servername callback; as that servername
131 callback may update the SSL_CTX, and subsequently, the ALPN callback.
156 The ALPN select callback B<cb>, must return one of the following:
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A DSSL_CTX_set_client_hello_cb.pod28 The argument supplied when setting the callback is passed back to the
29 callback at run time. A callback that returns failure (0) will cause the
31 what alert value is to be sent in the B<al> parameter. A callback may
37 function, the ClientHello callback will be called again, and, if it returns
74 code to affect the TLS handshake. A primary use of the callback is to
83 It is also recommended that applications utilize a ClientHello callback and
84 not use a servername callback, in order to avoid unexpected behavior that
86 resumption and the historical servername callback.
89 within a ClientHello callback.
93 The application's supplied ClientHello callback returns
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A DBN_generate_prime.pod33 int (*callback)(int, int, BN_GENCB *), void *cb_arg);
174 to BN_GENCB_set_old() and B<callback> is of type
175 B<void (*callback)(int, int, void *)>.
178 the type of the callback and will invoke B<callback(a, b, gencb)> for new
179 style callbacks or B<callback(a, b, cb_arg)> for old style.
185 BN_generate_prime_ex() but expects an old-style callback function
217 BN_GENCB callback;
221 BN_GENCB *callback;
222 callback = BN_GENCB_new();
223 if (!callback)
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A DSSL_CTX_set_client_cert_cb.pod19 SSL_CTX_set_client_cert_cb() sets the I<client_cert_cb> callback, that is
23 When I<client_cert_cb> is NULL, no callback function is used.
25 SSL_CTX_get_client_cert_cb() returns a pointer to the currently set callback
28 I<client_cert_cb> is the application defined callback. If it wants to
51 library. Using the callback function it is possible to implement a proper
55 If a callback function is defined and no certificate was yet defined for the
56 SSL object, the callback function will be called.
57 If the callback function returns a certificate, the OpenSSL library
62 If the callback returns no certificate, the OpenSSL library will not send
68 NULL if the callback is not set.
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A DSSL_CTX_set_record_padding_callback.pod12 SSL_set_block_padding - install callback to specify TLS 1.3 record padding
33 can be used to assign a callback function I<cb> to specify the padding
35 Kernel TLS is not possible if the record padding callback is set, and the callback
39 assign a value B<arg> that is passed to the callback when it is invoked. The value
43 retrieve the B<arg> value that is passed to the callback.
49 The callback is invoked for every record before encryption.
70 the callback function is not set because Kernel TLS is configured for the SSL object.
76 A user-supplied padding callback function will override the behavior set by
78 callback to NULL will restore the configured block padding behavior.
A DSSL_CTX_sess_set_get_cb.pod5 …t_new_cb, SSL_CTX_sess_get_remove_cb, SSL_CTX_sess_get_get_cb - provide callback functions for ser…
31 SSL_CTX_sess_set_new_cb() sets the callback function that is
34 SSL_CTX_sess_set_remove_cb() sets the callback function that is
39 SSL_CTX_sess_set_get_cb() sets the callback function that is called
47 corresponding set callback functions. If a callback function has not been
53 session cache is realized via callback functions. Inside these callback
62 session is incremented before the callback, on behalf of the application. If
63 the callback returns B<0>, the session will be immediately removed from the
64 internal cache and the reference count released. If the callback returns B<1>,
94 B<data>. By setting the parameter B<copy> to B<1>, the callback can require the
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A DSSL_CTX_set_session_ticket_cb.pod32 with a session, and placed into a session ticket. Either callback function may
35 B<gen_cb> is the application defined callback invoked when a session ticket is
39 callback is defined as type B<SSL_CTX_generate_session_ticket_fn>.
41 B<dec_cb> is the application defined callback invoked after session ticket
48 B<dec_cb> callback is defined as type B<SSL_CTX_decrypt_session_ticket_fn>.
122 If the callback does not wish to change the default ticket behaviour then it
129 the callback to return this value if B<status> has a value other than
138 callback to return this value if B<status> has a value other than
147 no session data will be available and the callback must not use the B<ss>
159 this behaviour can be changed if a ticket key callback is in use (see
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A DSSL_CTX_set_default_passwd_cb.pod9 get passwd callback for encrypted PEM file handling
27 SSL_CTX_set_default_passwd_cb() sets the default password callback called
31 which will be provided to the password callback on invocation.
34 callback currently set in B<ctx>. If no callback was explicitly set, the
45 The password callback, which must be provided by the application, hands back the
51 callback is used for reading/decryption (rwflag=0) or writing/encryption
60 to have the callback handle the password dialog interactively. If several
64 callback only returns the password already stored.
66 When asking for the password interactively, the callback can use
A DSSL_CTX_get_verify_mode.pod35 callback currently set in B<ctx>. If no callback was explicitly set, the
36 NULL pointer is returned and the default callback will be used.
39 callback currently set in B<ssl>. If no callback was explicitly set, the
40 NULL pointer is returned and the default callback will be used.
A DSSL_CTX_set_generate_session_id.pod23 SSL_CTX_set_generate_session_id() sets the callback function for generating
26 SSL_set_generate_session_id() sets the callback function for generating
42 Without a callback being set, an OpenSSL server will generate a unique
44 Using the callback function, the session id can be changed to contain
48 The callback function receives a pointer to the memory location to put
51 The callback is only allowed to generate a shorter id and reduce B<id_len>;
52 the callback B<must never> increase B<id_len> or write to the location
56 callback may only fill part of the possible length and leave B<id_len>
60 Without the callback a random number is used, so that the probability
82 The callback must return 0 if it cannot generate a session id for whatever
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/openssl-master/crypto/bn/
A Dbn_depr.c24 void (*callback) (int, int, void *), void *cb_arg) in BN_generate_prime()
29 BN_GENCB_set_old(&cb, callback, cb_arg); in BN_generate_prime()
47 void (*callback) (int, int, void *), BN_CTX *ctx_passed, in BN_is_prime()
51 BN_GENCB_set_old(&cb, callback, cb_arg); in BN_is_prime()
56 void (*callback) (int, int, void *), in BN_is_prime_fasttest()
61 BN_GENCB_set_old(&cb, callback, cb_arg); in BN_is_prime_fasttest()
/openssl-master/test/ssl-tests/
A D03-custom_verify.cnf.in17 # restrictive callback.
25 # Same test as above but with a custom callback that always fails.
40 # Same test as above but with a custom callback that always succeeds.
54 # Same test as above but with a custom callback that requests retry once.
80 # Same test as above but with a custom callback that always fails.
81 # The callback return has no impact on handshake success in this mode.
97 # Same test as above but with a custom callback that always succeeds.
98 # The callback return has no impact on handshake success in this mode.
115 # permissive callback.
129 # Same test as above but with a custom callback that always succeeds.
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/openssl-master/crypto/async/
A Dasync_wait.c186 ASYNC_callback_fn callback, in ASYNC_WAIT_CTX_set_callback() argument
192 ctx->callback = callback; in ASYNC_WAIT_CTX_set_callback()
198 ASYNC_callback_fn *callback, in ASYNC_WAIT_CTX_get_callback() argument
201 if (ctx->callback == NULL) in ASYNC_WAIT_CTX_get_callback()
204 *callback = ctx->callback; in ASYNC_WAIT_CTX_get_callback()

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