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uts-server/README.rst
2016-09-10 03:27:41 +02:00

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uts-server
==========
.. image:: https://travis-ci.org/kakwa/uts-server.svg?branch=master
:target: https://travis-ci.org/kakwa/uts-server
Micro timestamp server (RFC 3161) written in C
Status
------
Alpha
Dependencies
------------
Runtime dependencies
~~~~~~~~~~~~~~~~~~~~
* OpenSSL (https://github.com/openssl/openssl)
* civetweb (https://github.com/civetweb/civetweb)
Build dependencies
~~~~~~~~~~~~~~~~~~
* cmake
* either gcc or clang
License
-------
Released under the MIT Public License
Usage
-----
.. sourcecode:: bash
$ ./uts-server --help
Usage: uts-server [OPTION...] -c CONFFILE [-d] [-D] [-p <pidfile>]
UTS micro timestamp server (RFC 3161)
-c, --conffile=CONFFILE Path to configuration file
-d, --daemonize Launch as a daemon
-D, --debug STDOUT debugging
-p, --pidfile=PIDFILE Path to pid file
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version
Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.
Report bugs to Pierre-Francois Carpentier <carpentier.pf@gmail.com>.
Configuration
-------------
main
~~~~
Main configuration section (mostly http configuration).
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| param | description | example value |
+=============================+=====================================================================+======================================+
| access_control_allow_origin | Comma separated list of IP subnets to accept/deny | -0.0.0.0/0,+192.168/16 |
| | | |
| | Ex: -0.0.0.0/0,+192.168.0.0/16 | |
| | (deny all accesses, only allow 192.168.0.0/16 subnet) | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| enable_keep_alive | Allows clients to reuse TCP connection for subsequent | no |
| | HTTP requests, which improves performance. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| listening_ports | Comma-separated list of ips:ports to listen on. | 127.0.0.1:2020 |
| | If the port is SSL, a letter s must be appended. | |
| | Ex: listening_ports = 80,443s | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| log_level | Loglevel (debug, info, notice, warn, err, emerg, crit) | info |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| num_threads | Number of worker threads. | 50 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| request_timeout_ms | Timeout for network read and network write operations. | 30000 |
| | In milliseconds. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| run_as_user | Switch to given user credentials after startup. | uts-server |
| | Required to run on privileged ports as non root user. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_ca_file | Path to a .pem file containing trusted certificates. | /etc/uts-server/ca.pem |
| | The file may contain more than one certificate. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_ca_path | Name of a directory containing trusted CA certificates. | /etc/ssl/ca/ |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_certificate | Path to the SSL certificate file . | /etc/uts-server/cert.pem |
| | PEM format must contain private key and certificate. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_cipher_list | See https://www.openssl.org/docs/manmaster/apps/ciphers.html | ALL:!eNULL |
| | for more detailed | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_default_verify_paths | Loads default trusted certificates | yes |
| | locations set at openssl compile time. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_protocol_version | Sets the minimal accepted version of SSL/TLS protocol | 3 |
| | according to the table: | |
| | | |
| | SSL2+SSL3+TLS1.0+TLS1.1+TLS1.2 -> 0 | |
| | | |
| | SSL3+TLS1.0+TLS1.1+TLS1.2 -> 1 | |
| | | |
| | TLS1.0+TLS1.1+TLS1.2 -> 2 | |
| | | |
| | TLS1.1+TLS1.2 -> 3 | |
| | | |
| | TLS1.2 -> 4 | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_short_trust | Enables the use of short lived certificates | no |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_verify_depth | Sets maximum depth of certificate chain. | 9 |
| | If client's certificate chain is longer | |
| | than the depth set here connection is refused. | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ssl_verify_peer | Enable client's certificate verification by the server. | yes |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| tcp_nodelay | Enable TCP_NODELAY socket option on client connections. | 0 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| throttle | Limit download speed for clients. | \*=0 |
| | | |
| | Throttle is a comma-separated list of key=value pairs: | |
| | | |
| | - \* -> limit speed for all connections | |
| | | |
| | - x.x.x.x/mask -> limit speed for specified subnet | |
| | | |
| | The value is a floating-point number of bytes per second, | |
| | optionally followed by a k or m character | |
| | meaning kilobytes and megabytes respectively. | |
| | | |
| | A limit of 0 means unlimited rate. | |
| | | |
| | Ex: throttle = \*=1k,10.10.0.0/16=10m,10.20.0.0/16=0 | |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
oids
~~~~
Section for declarinG OID mapping. Just add <name> = <OID> pairs.
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| param | description | example value |
+=============================+=====================================================================+======================================+
| tsa_policy1 | | 1.2.3.4.1 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| tsa_policy2 | | 1.2.3.4.5.6 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| tsa_policy3 | | 1.2.3.4.5.7 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
tsa
~~~
Section defining which TSA section to use.
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| param | description | example value |
+=============================+=====================================================================+======================================+
| default_tsa | Name of the TSA section to use as default. | tsa_config1 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
tsa_config1
~~~~~~~~~~~
Example of timestamp section configuration.
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| param | description | example value |
+=============================+=====================================================================+======================================+
| accuracy | Timestamp accuracy. (optional) | secs:1, millisecs:500, microsecs:100 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| certs | Certificate chain to include in reply. (optional) | $dir/cacert.pem |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| clock_precision_digits | Number of decimals for timestamp. (optional) | 0 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| crypto_device | OpenSSL engine to use for signing. | builtin |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| default_policy | Policy if request did not specify it. (optional) | tsa_policy1 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| digests | Acceptable message digests. (mandatory) | md5, sha1 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| dir | TSA root directory. | /etc/uts-server/pki |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ess_cert_id_chain | Must the ESS cert id chain be included? (optional, default: no) | no |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| ordering | Is ordering defined for timestamps? (optional, default: no) | yes |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| other_policies | Acceptable policies. (optional) | tsa_policy2, tsa_policy3 |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| signer_cert | The TSA signing certificat. (optional) | $dir/tsacert.pem |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| signer_key | The TSA private key. (optional) | $dir/private/tsakey.pem |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
| tsa_name | Must the TSA name be included in the reply? (optional, default: no) | yes |
+-----------------------------+---------------------------------------------------------------------+--------------------------------------+
Building
--------
.. sourcecode:: bash
$ cmake .
$ make -j 2
Playing with it
---------------
.. sourcecode:: bash
# building with civetweb embedded (will recover civetweb from github)
$ cmake . -DBUNDLE_CIVETWEB=ON
$ make
# create some test certificates
$ ./tests/cfg/pki/create_tsa_certs
# launching the timestamp server with test configuration in debug mode
$ ./uts-server -c tests/cfg/uts-server.cnf -D
# in another shell, launching a timestamp script on the README.md file
$ ./goodies/timestamp-file.sh -i README.md -u http://localhost:2020 -r -O "-cert";