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-rw-r--r--lib/ssl/doc/src/ssl.xml285
1 files changed, 179 insertions, 106 deletions
diff --git a/lib/ssl/doc/src/ssl.xml b/lib/ssl/doc/src/ssl.xml
index def61bcf03..0f3054aec3 100644
--- a/lib/ssl/doc/src/ssl.xml
+++ b/lib/ssl/doc/src/ssl.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="latin1" ?>
+<?xml version="1.0" encoding="iso-8859-1" ?>
<!DOCTYPE erlref SYSTEM "erlref.dtd">
<erlref>
@@ -69,10 +69,13 @@
</p>
<p> <c>ssloption() = {verify, verify_type()} |
+ {verify_fun, {fun(), term()}} |
{fail_if_no_peer_cert, boolean()}
{depth, integer()} |
- {certfile, path()} | {keyfile, path()} | {password, string()} |
- {cacertfile, path()} | {dhfile, path()} | {ciphers, ciphers()} |
+ {cert, der_bin()}| {certfile, path()} |
+ {key, der_bin()} | {keyfile, path()} | {password, string()} |
+ {cacerts, [der_bin()]} | {cacertfile, path()} |
+ |{dh, der_bin()} | {dhfile, path()} | {ciphers, ciphers()} |
{ssl_imp, ssl_imp()} | {reuse_sessions, boolean()} | {reuse_session, fun()}
</c></p>
@@ -91,6 +94,8 @@
<p><c>verify_type() = verify_none | verify_peer</c></p>
<p><c>path() = string() - representing a file path.</c></p>
+
+ <p><c>der_bin() = binary() -Asn1 DER encoded entity as an erlang binary.</c></p>
<p><c>host() = hostname() | ipaddress()</c></p>
@@ -121,115 +126,52 @@
<p><c>ssl_imp() = new | old - default is new.</c></p>
</section>
-
-<section>
- <title>SSL OPTION DESCRIPTIONS</title>
+
+ <section>
+ <title>SSL OPTION DESCRIPTIONS - COMMON for SERVER and CLIENT</title>
+
+ <p>Options described here are options that are have the same
+ meaning in the client and the server.
+ </p>
<taglist>
- <tag>{verify, verify_type()}</tag>
- <item> If <c>verify_none</c> is specified x509-certificate
- path validation errors at the client side
- will not automatically cause the connection to fail, as
- it will if the verify type is <c>verify_peer</c>. See also
- the option verify_fun.
- Servers only do the path validation if <c>verify_peer</c> is set to
- true, as it then will
- send a certificate request to
- the client (this message is not sent if the verify option is
- <c>verify_none</c>) and you may then also want to specify
- the option <c>fail_if_no_peer_cert</c>.
- </item>
- <tag>{fail_if_no_peer_cert, boolean()}</tag>
- <item>Used together with {verify, verify_peer} by a ssl server.
- If set to true,
- the server will fail if the client does not have a certificate
- to send, e.i sends a empty certificate, if set to false it will
- only fail if the client sends a invalid certificate (an empty
- certificate is considered valid).
- </item>
+ <tag>{cert, der_bin()}</tag>
+ <item> The DER encoded users certificate. If this option
+ is supplied it will override the certfile option.</item>
- <tag>{verify_fun, fun(ErrorList) -> boolean()}</tag>
- <item>Used by the ssl client to determine if
- x509-certificate path validations errors are acceptable or
- if the connection should fail. Defaults to:
-
-<code>
-fun(ErrorList) ->
- case lists:foldl(fun({bad_cert,unknown_ca}, Acc) ->
- Acc;
- (Other, Acc) ->
- [Other | Acc]
- end, [], ErrorList) of
- [] ->
- true;
- [_|_] ->
- false
- end
-end
-</code>
- I.e. by default if the only error found was that the CA-certificate
- holder was unknown this will be accepted.
-
- Possible errors in the error list are:
- {bad_cert, cert_expired}, {bad_cert, invalid_issuer},
- {bad_cert, invalid_signature}, {bad_cert, name_not_permitted},
- {bad_cert, unknown_ca},
- {bad_cert, cert_expired}, {bad_cert, invalid_issuer},
- {bad_cert, invalid_signature}, {bad_cert, name_not_permitted},
- {bad_cert, cert_revoked} (not implemented yet),
- {bad_cert, unknown_critical_extension} or {bad_cert, term()}
- </item>
-
+ <tag>{certfile, path()}</tag>
+ <item>Path to a file containing the user's certificate.</item>
- <tag>{validate_extensions_fun, fun()}</tag>
- <item>
- This options makes it possible to supply a fun to validate
- possible application specific certificate extensions
- during the certificat path validation. This option
- will be better documented onec the public_key API is more
- mature.
- </item>
+ <tag>{key, der_bin()}</tag>
+ <item> The DER encoded users private key. If this option
+ is supplied it will override the keyfile option.</item>
- <tag>{depth, integer()}</tag>
- <item>Specifies the maximum
- verification depth, i.e. how far in a chain of certificates the
- verification process can proceed before the verification is
- considered to fail. Peer certificate = 0, CA certificate = 1,
- higher level CA certificate = 2, etc. The value 2 thus means
- that a chain can at most contain peer cert, CA cert, next CA
- cert, and an additional CA cert. The default value is 1.
- </item>
-
- <tag>{certfile, path()}</tag>
- <item>Path to a file containing the
- user's certificate. Optional for clients but note
- that some servers requires that the client can certify
- itself. </item>
<tag>{keyfile, path()}</tag>
<item>Path to file containing user's
private PEM encoded key. As PEM-files may contain several
entries this option defaults to the same file as given by
certfile option.</item>
+
<tag>{password, string()}</tag>
<item>String containing the user's password.
Only used if the private keyfile is password protected.
</item>
+
+ <tag>{cacerts, [der_bin()]}</tag>
+ <item> The DER encoded trusted certificates. If this option
+ is supplied it will override the cacertfile option.</item>
+
<tag>{cacertfile, path()}</tag>
<item>Path to file containing PEM encoded
CA certificates (trusted certificates used for verifying a peer
certificate). May be omitted if you do not want to verify
the peer.</item>
- <tag>{dhfile, path()}</tag>
- <item>Path to file containing PEM encoded Diffie Hellman parameters,
- for the server to use if a cipher suite using Diffie Hellman key exchange
- is negotiated. If not specified hardcode parameters will be used.
- </item>
-
<tag>{ciphers, ciphers()}</tag>
- <item>The function <c>ciphers_suites/0</c> can
- be used to find all available ciphers.
+ <item>The cipher suites that should be supported. The function
+ <c>ciphers_suites/0</c> can be used to find all available
+ ciphers.
</item>
<tag>{ssl_imp, ssl_imp()}</tag>
@@ -237,13 +179,152 @@ end
new.
</item>
+ <tag>{secure_renegotiate, boolean()}</tag>
+ <item>Specifies if to reject renegotiation attempt that does
+ not live up to RFC 5746. By default secure_renegotiate is
+ set to false i.e. secure renegotiation will be used if possible
+ but it will fallback to unsecure renegotiation if the peer
+ does not support RFC 5746.
+ </item>
+
+ <tag>{depth, integer()}</tag>
+ <item>Specifies the maximum
+ verification depth, i.e. how far in a chain of certificates the
+ verification process can proceed before the verification is
+ considered to fail. Peer certificate = 0, CA certificate = 1,
+ higher level CA certificate = 2, etc. The value 2 thus means
+ that a chain can at most contain peer cert, CA cert, next CA
+ cert, and an additional CA cert. The default value is 1.
+ </item>
+
+ <tag>{verify_fun, {Verifyfun :: fun(), InitialUserState :: term()}}</tag>
+ <item>
+ <p>The verification fun should be defined as:</p>
+
+ <code>
+ fun(OtpCert :: #'OtpCertificate'{},
+ Event :: {bad_cert, Reason :: atom()} |
+ {extension, #'Extension'{}}, InitialUserState :: term()) ->
+ {valid, UserState :: term()} | {fail, Reason :: term()} |
+ {unknown, UserState :: term()}.
+ </code>
+
+ <p>The verify fun will be called during the X509-path
+ validation when an error or an extension unknown to the ssl
+ application is encountered. See
+ <seealso marker="public_key:application">public_key(3)</seealso>
+ for definition of #'OtpCertificate'{} and #'Extension'{}.</p>
+
+ <p>If the verify callback fun returns {fail, Reason}, the
+ verification process is immediately stopped and an alert is
+ sent to the peer and the TLS/SSL handshake is terminated. If
+ the verify callback fun returns {valid, UserState}, the
+ verification process is continued. If the verify callback fun
+ always returns {valid, UserState}, the TLS/SSL handshake will
+ not be terminated with respect to verification failures and
+ the connection will be established. If called with an
+ extension unknown to the user application the return value
+ {unknown, UserState} should be used.</p>
+
+ <p>The default verify_fun option in verify_peer mode:</p>
+
+ <code>
+ {fun(_,{bad_cert, _} = Reason, _) ->
+ {fail, Reason};
+ (_,{extension, _}, UserState) ->
+ {unknown, UserState}
+ end, []}
+ </code>
+
+ <p>The default verify_fun option in verify_none mode:</p>
+
+ <code>
+ {fun(_,{bad_cert, unknown_ca}, UserState) ->
+ {valid, UserState};
+ (_,{bad_cert, _} = Reason, _) ->
+ {fail, Reason};
+ (_,{extension, _}, UserState) ->
+ {unknown, UserState}
+ end, []}
+ </code>
+
+ <p> Possible path validation errors:
+ {bad_cert, cert_expired},
+ {bad_cert, invalid_issuer},
+ {bad_cert, invalid_signature},
+ {bad_cert, unknown_ca},
+ {bad_cert, name_not_permitted},
+ {bad_cert, missing_basic_constraint},
+ {bad_cert, invalid_key_usage},
+ {bad_cert, invalid_subject_altname}</p>
+ </item>
+
+ </taglist>
+
+ </section>
+
+ <section>
+ <title>SSL OPTION DESCRIPTIONS - CLIENT SIDE</title>
+
+ <p>Option described here are client specific or has a slightly different
+ meaning in the client than in the server.</p>
+
+ <taglist>
+ <tag>{verify, verify_type()}</tag>
+ <item> In verify_none mode the x509-path validation error {bad_cert, unknown_ca}
+ will automatically be accepted. See also the verify_fun option.
+ </item>
+ <tag>{reuse_sessions, boolean()}</tag>
+ <item>Specifies if client should try to reuse sessions
+ when possible.
+ </item>
+
+ </taglist>
+ </section>
+
+ <section>
+ <title>SSL OPTION DESCRIPTIONS - SERVER SIDE</title>
+
+ <p>Option described here are server specific or has a slightly different
+ meaning in the server than in the client.</p>
+
+ <taglist>
+
+ <tag>{dh, der_bin()}</tag>
+ <item>The DER encoded Diffie Hellman parameters. If this option
+ is supplied it will override the dhfile option.
+ </item>
+
+ <tag>{dhfile, path()}</tag>
+ <item>Path to file containing PEM encoded Diffie Hellman parameters,
+ for the server to use if a cipher suite using Diffie Hellman key exchange
+ is negotiated. If not specified default parameters will be used.
+ </item>
+
+ <tag>{verify, verify_type()}</tag>
+ <item>Servers only do the x509-path validation in verify_peer
+ mode, as it then will send a certificate request to the client
+ (this message is not sent if the verify option is verify_none)
+ and you may then also want to specify the option
+ fail_if_no_peer_cert.
+ </item>
+
+ <tag>{fail_if_no_peer_cert, boolean()}</tag>
+ <item>Used together with {verify, verify_peer} by a ssl server.
+ If set to true, the server will fail if the client does not have
+ a certificate to send, i.e. sends a empty certificate, if set to
+ false it will only fail if the client sends a invalid
+ certificate (an empty certificate is considered valid).
+ </item>
+
<tag>{reuse_sessions, boolean()}</tag>
- <item>Specifies if ssl sessions should be reused
- when possible.
+ <item>Specifies if the server should agree to reuse sessions
+ when the clients request to do so. See also the reuse_session
+ option.
</item>
- <tag>{reuse_session, fun(SuggestedSessionId,
- PeerCert, Compression, CipherSuite) -> boolean()}</tag>
+ <tag>{reuse_session, fun(SuggestedSessionId,
+ PeerCert, Compression, CipherSuite) -> boolean()}</tag>
<item>Enables the ssl server to have a local policy
for deciding if a session should be reused or not,
only meaning full if <c>reuse_sessions</c> is set to true.
@@ -252,14 +333,6 @@ end
and CipherSuite of type ciphersuite().
</item>
- <tag>{secure_renegotiate, boolean()}</tag>
- <item>Specifies if to reject renegotiation attempt that does
- not live up to RFC 5746. By default secure_renegotiate is
- set to false e.i. secure renegotiation will be used if possible
- but it will fallback to unsecure renegotiation if the peer
- does not support RFC 5746.
- </item>
-
</taglist>
</section>
@@ -316,7 +389,7 @@ end
<v>Reason = term()</v>
</type>
<desc> <p>Upgrades a gen_tcp, or equivalent,
- connected socket to a ssl socket e.i performs the
+ connected socket to a ssl socket i.e. performs the
client-side ssl handshake.</p>
</desc>
</func>
@@ -559,12 +632,12 @@ end
</type>
<desc>
<p> Upgrades a gen_tcp, or
- equivalent, socket to a ssl socket e.i performs the
+ equivalent, socket to a ssl socket i.e. performs the
ssl server-side handshake.</p>
- <p><note>Note that the listen socket should be in {active, false} mode
+ <p><warning>Note that the listen socket should be in {active, false} mode
before telling the client that the server is ready to upgrade
and calling this function, otherwise the upgrade may
- or may not succeed depending on timing.</note></p>
+ or may not succeed depending on timing.</warning></p>
</desc>
</func>