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-rw-r--r--lib/ssl/examples/certs/src/make_certs.erl261
1 files changed, 261 insertions, 0 deletions
diff --git a/lib/ssl/examples/certs/src/make_certs.erl b/lib/ssl/examples/certs/src/make_certs.erl
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+%% The purpose of this module is to create example certificates for
+%% testing.
+%% Run it as:
+%%
+%% erl -noinput -run make_certs all "/path/to/openssl" -s erlang halt
+%%
+
+-module(make_certs).
+-export([all/0, all/1]).
+
+-record(dn, {commonName,
+ organizationalUnitName = "Erlang OTP",
+ organizationName = "Ericsson AB",
+ localityName = "Stockholm",
+ countryName = "SE",
+ emailAddress = "[email protected]"}).
+
+all() ->
+ all(["openssl"]).
+
+all([OpenSSLCmd]) ->
+ Root = filename:dirname(filename:dirname((code:which(?MODULE)))),
+ %% io:fwrite("Root : ~s~n", [Root]),
+ NRoot = filename:join([Root, "etc"]),
+ file:make_dir(NRoot),
+ create_rnd(Root, "etc"), % For all requests
+ rootCA(NRoot, OpenSSLCmd, "erlangCA"),
+ intermediateCA(NRoot, OpenSSLCmd, "otpCA", "erlangCA"),
+ endusers(NRoot, OpenSSLCmd, "otpCA", ["client", "server"]),
+ collect_certs(NRoot, ["erlangCA", "otpCA"], ["client", "server"]),
+ remove_rnd(Root, "etc").
+
+rootCA(Root, OpenSSLCmd, Name) ->
+ create_ca_dir(Root, Name, ca_cnf(Name)),
+ DN = #dn{commonName = Name},
+ create_self_signed_cert(Root, OpenSSLCmd, Name, req_cnf(DN)),
+ ok.
+
+intermediateCA(Root, OpenSSLCmd, CA, ParentCA) ->
+ CA = "otpCA",
+ create_ca_dir(Root, CA, ca_cnf(CA)),
+ CARoot = filename:join([Root, CA]),
+ DN = #dn{commonName = CA},
+ CnfFile = filename:join([CARoot, "req.cnf"]),
+ file:write_file(CnfFile, req_cnf(DN)),
+ KeyFile = filename:join([CARoot, "private", "key.pem"]),
+ ReqFile = filename:join([CARoot, "req.pem"]),
+ create_req(Root, OpenSSLCmd, CnfFile, KeyFile, ReqFile),
+ CertFile = filename:join([CARoot, "cert.pem"]),
+ sign_req(Root, OpenSSLCmd, ParentCA, "ca_cert", ReqFile, CertFile).
+
+endusers(Root, OpenSSLCmd, CA, Users) ->
+ lists:foreach(fun(User) -> enduser(Root, OpenSSLCmd, CA, User) end, Users).
+
+enduser(Root, OpenSSLCmd, CA, User) ->
+ UsrRoot = filename:join([Root, User]),
+ file:make_dir(UsrRoot),
+ CnfFile = filename:join([UsrRoot, "req.cnf"]),
+ DN = #dn{commonName = User},
+ file:write_file(CnfFile, req_cnf(DN)),
+ KeyFile = filename:join([UsrRoot, "key.pem"]),
+ ReqFile = filename:join([UsrRoot, "req.pem"]),
+ create_req(Root, OpenSSLCmd, CnfFile, KeyFile, ReqFile),
+ CertFile = filename:join([UsrRoot, "cert.pem"]),
+ sign_req(Root, OpenSSLCmd, CA, "user_cert", ReqFile, CertFile).
+
+collect_certs(Root, CAs, Users) ->
+ Bins = lists:foldr(
+ fun(CA, Acc) ->
+ File = filename:join([Root, CA, "cert.pem"]),
+ {ok, Bin} = file:read_file(File),
+ [Bin, "\n" | Acc]
+ end, [], CAs),
+ lists:foreach(
+ fun(User) ->
+ File = filename:join([Root, User, "cacerts.pem"]),
+ file:write_file(File, Bins)
+ end, Users).
+
+create_self_signed_cert(Root, OpenSSLCmd, CAName, Cnf) ->
+ CARoot = filename:join([Root, CAName]),
+ CnfFile = filename:join([CARoot, "req.cnf"]),
+ file:write_file(CnfFile, Cnf),
+ KeyFile = filename:join([CARoot, "private", "key.pem"]),
+ CertFile = filename:join([CARoot, "cert.pem"]),
+ Cmd = [OpenSSLCmd, " req"
+ " -new"
+ " -x509"
+ " -config ", CnfFile,
+ " -keyout ", KeyFile,
+ " -out ", CertFile],
+ Env = [{"ROOTDIR", Root}],
+ cmd(Cmd, Env).
+
+create_ca_dir(Root, CAName, Cnf) ->
+ CARoot = filename:join([Root, CAName]),
+ file:make_dir(CARoot),
+ create_dirs(CARoot, ["certs", "crl", "newcerts", "private"]),
+ create_rnd(Root, filename:join([CAName, "private"])),
+ create_files(CARoot, [{"serial", "01\n"},
+ {"index.txt", ""},
+ {"ca.cnf", Cnf}]).
+
+create_req(Root, OpenSSLCmd, CnfFile, KeyFile, ReqFile) ->
+ Cmd = [OpenSSLCmd, " req"
+ " -new"
+ " -config ", CnfFile,
+ " -keyout ", KeyFile,
+ " -out ", ReqFile],
+ Env = [{"ROOTDIR", Root}],
+ cmd(Cmd, Env).
+
+sign_req(Root, OpenSSLCmd, CA, CertType, ReqFile, CertFile) ->
+ CACnfFile = filename:join([Root, CA, "ca.cnf"]),
+ Cmd = [OpenSSLCmd, " ca"
+ " -batch"
+ " -notext"
+ " -config ", CACnfFile,
+ " -extensions ", CertType,
+ " -in ", ReqFile,
+ " -out ", CertFile],
+ Env = [{"ROOTDIR", Root}],
+ cmd(Cmd, Env).
+
+%%
+%% Misc
+%%
+
+create_dirs(Root, Dirs) ->
+ lists:foreach(fun(Dir) ->
+ file:make_dir(filename:join([Root, Dir])) end,
+ Dirs).
+
+create_files(Root, NameContents) ->
+ lists:foreach(
+ fun({Name, Contents}) ->
+ file:write_file(filename:join([Root, Name]), Contents) end,
+ NameContents).
+
+create_rnd(Root, Dir) ->
+ From = filename:join([Root, "rnd", "RAND"]),
+ To = filename:join([Root, Dir, "RAND"]),
+ file:copy(From, To).
+
+remove_rnd(Root, Dir) ->
+ File = filename:join([Root, Dir, "RAND"]),
+ file:delete(File).
+
+cmd(Cmd, Env) ->
+ FCmd = lists:flatten(Cmd),
+ Port = open_port({spawn, FCmd}, [stream, eof, exit_status,
+ {env, Env}]),
+ eval_cmd(Port).
+
+eval_cmd(Port) ->
+ receive
+ {Port, {data, _}} ->
+ eval_cmd(Port);
+ {Port, eof} ->
+ ok
+ end,
+ receive
+ {Port, {exit_status, Status}} when Status /= 0 ->
+ %% io:fwrite("exit status: ~w~n", [Status]),
+ erlang:halt(Status)
+ after 0 ->
+ ok
+ end.
+
+%%
+%% Contents of configuration files
+%%
+
+req_cnf(DN) ->
+ ["# Purpose: Configuration for requests (end users and CAs)."
+ "\n"
+ "ROOTDIR = $ENV::ROOTDIR\n"
+ "\n"
+
+ "[req]\n"
+ "input_password = secret\n"
+ "output_password = secret\n"
+ "default_bits = 1024\n"
+ "RANDFILE = $ROOTDIR/RAND\n"
+ "encrypt_key = no\n"
+ "default_md = sha1\n"
+ "#string_mask = pkix\n"
+ "x509_extensions = ca_ext\n"
+ "prompt = no\n"
+ "distinguished_name= name\n"
+ "\n"
+
+ "[name]\n"
+ "commonName = ", DN#dn.commonName, "\n"
+ "organizationalUnitName = ", DN#dn.organizationalUnitName, "\n"
+ "organizationName = ", DN#dn.organizationName, "\n"
+ "localityName = ", DN#dn.localityName, "\n"
+ "countryName = ", DN#dn.countryName, "\n"
+ "emailAddress = ", DN#dn.emailAddress, "\n"
+ "\n"
+
+ "[ca_ext]\n"
+ "basicConstraints = critical, CA:true\n"
+ "keyUsage = cRLSign, keyCertSign\n"
+ "subjectKeyIdentifier = hash\n"
+ "subjectAltName = email:copy\n"].
+
+
+ca_cnf(CA) ->
+ ["# Purpose: Configuration for CAs.\n"
+ "\n"
+ "ROOTDIR = $ENV::ROOTDIR\n"
+ "default_ca = ca\n"
+ "\n"
+
+ "[ca]\n"
+ "dir = $ROOTDIR/", CA, "\n"
+ "certs = $dir/certs\n"
+ "crl_dir = $dir/crl\n"
+ "database = $dir/index.txt\n"
+ "new_certs_dir = $dir/newcerts\n"
+ "certificate = $dir/cert.pem\n"
+ "serial = $dir/serial\n"
+ "crl = $dir/crl.pem\n"
+ "private_key = $dir/private/key.pem\n"
+ "RANDFILE = $dir/private/RAND\n"
+ "\n"
+ "x509_extensions = user_cert\n"
+ "default_days = 3600\n"
+ "default_md = sha1\n"
+ "preserve = no\n"
+ "policy = policy_match\n"
+ "\n"
+
+ "[policy_match]\n"
+ "commonName = supplied\n"
+ "organizationalUnitName = optional\n"
+ "organizationName = match\n"
+ "countryName = match\n"
+ "localityName = match\n"
+ "emailAddress = supplied\n"
+ "\n"
+
+ "[user_cert]\n"
+ "basicConstraints = CA:false\n"
+ "keyUsage = nonRepudiation, digitalSignature, keyEncipherment\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"
+ "\n"
+
+ "[ca_cert]\n"
+ "basicConstraints = critical,CA:true\n"
+ "keyUsage = cRLSign, keyCertSign\n"
+ "subjectKeyIdentifier = hash\n"
+ "authorityKeyIdentifier = keyid:always,issuer:always\n"
+ "subjectAltName = email:copy\n"
+ "issuerAltName = issuer:copy\n"].
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 20:09:31 +0000