First Commit

.gitattributes

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-# Auto detect text files and perform LF normalization
-* text=auto
-
-# Custom for Visual Studio
-*.cs     diff=csharp
-
-# Standard to msysgit
-*.doc	 diff=astextplain
-*.DOC	 diff=astextplain
-*.docx diff=astextplain
-*.DOCX diff=astextplain
-*.dot  diff=astextplain
-*.DOT  diff=astextplain
-*.pdf  diff=astextplain
-*.PDF	 diff=astextplain
-*.rtf	 diff=astextplain
-*.RTF	 diff=astextplain

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 Daniel Roesler
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

acme_tiny.py

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+#!/usr/bin/env python
+import argparse, subprocess, json, os, os.path, urllib2, sys, base64, binascii, time, \
+    hashlib, re, copy, textwrap
+
+#CA = "https://acme-staging.api.letsencrypt.org"
+CA = "https://acme-v01.api.letsencrypt.org"
+
+def get_crt(account_key, csr, acme_dir):
+
+    # helper function base64 encode for jose spec
+    def _b64(b):
+        return base64.urlsafe_b64encode(b).replace("=", "")
+
+    # parse account key to get public key
+    sys.stderr.write("Parsing account key...")
+    proc = subprocess.Popen(["openssl", "rsa", "-in", account_key, "-noout", "-text"],
+        stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = proc.communicate()
+    if proc.returncode != 0:
+        raise IOError("OpenSSL Error: {0}".format(err))
+    pub_hex, pub_exp = re.search(
+        r"modulus:\n\s+00:([a-f0-9\:\s]+?)\npublicExponent: ([0-9]+)",
+        out, re.MULTILINE|re.DOTALL).groups()
+    pub_mod = binascii.unhexlify(re.sub(r"(\s|:)", "", pub_hex))
+    pub_mod64 = _b64(pub_mod)
+    pub_exp = "{0:x}".format(int(pub_exp))
+    pub_exp = "0{0}".format(pub_exp) if len(pub_exp) % 2 else pub_exp
+    pub_exp64 = _b64(binascii.unhexlify(pub_exp))
+    header = {
+        "alg": "RS256",
+        "jwk": {
+            "e": pub_exp64,
+            "kty": "RSA",
+            "n": pub_mod64,
+        },
+    }
+    accountkey_json = json.dumps(header['jwk'], sort_keys=True, separators=(',', ':'))
+    thumbprint = _b64(hashlib.sha256(accountkey_json).digest())
+    sys.stderr.write("parsed!\n")
+
+    # helper function make signed requests
+    def _send_signed_request(url, payload):
+        nonce = urllib2.urlopen(CA + "/directory").headers['Replay-Nonce']
+        payload64 = _b64(json.dumps(payload))
+        protected = copy.deepcopy(header)
+        protected.update({"nonce": nonce})
+        protected64 = _b64(json.dumps(protected))
+        proc = subprocess.Popen(["openssl", "dgst", "-sha256", "-sign", account_key],
+            stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        out, err = proc.communicate("{0}.{1}".format(protected64, payload64))
+        if proc.returncode != 0:
+            raise IOError("OpenSSL Error: {0}".format(err))
+        data = json.dumps({
+            "header": header,
+            "protected": protected64,
+            "payload": payload64,
+            "signature": _b64(out),
+        })
+        try:
+            resp = urllib2.urlopen(url, data)
+            return resp.getcode(), resp.read()
+        except urllib2.HTTPError as e:
+            return e.code, e.read()
+
+    # find domains
+    sys.stderr.write("Parsing CSR...")
+    proc = subprocess.Popen(["openssl", "req", "-in", csr, "-noout", "-text"],
+        stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = proc.communicate()
+    if proc.returncode != 0:
+        raise IOError("Error loading {0}: {1}".format(csr, err))
+    domains = set([])
+    common_name = re.search(r"Subject:.*? CN=([^\s,;/]+)", out)
+    if common_name is not None:
+        domains.add(common_name.group(1))
+    subject_alt_names = re.search(r"X509v3 Subject Alternative Name: \n +([^\n]+)\n", out, re.MULTILINE|re.DOTALL)
+    if subject_alt_names is not None:
+        for san in subject_alt_names.group(1).split(", "):
+            if san.startswith("DNS:"):
+                domains.add(san[4:])
+    sys.stderr.write("parsed!\n")
+
+    # get the certificate domains and expiration
+    sys.stderr.write("Registering account...")
+    code, result = _send_signed_request(CA + "/acme/new-reg", {
+        "resource": "new-reg",
+        "agreement": "https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf",
+    })
+    if code == 201:
+        sys.stderr.write("registered!\n")
+    elif code == 409:
+        sys.stderr.write("already registered!\n")
+    else:
+        raise ValueError("Error registering: {0} {1}".format(code, result))
+
+    # verify each domain
+    for domain in domains:
+        sys.stderr.write("Verifying {0}...".format(domain))
+
+        # get new challenge
+        code, result = _send_signed_request(CA + "/acme/new-authz", {
+            "resource": "new-authz",
+            "identifier": {
+                "type": "dns",
+                "value": domain,
+            },
+        })
+        if code != 201:
+            raise ValueError("Error registering: {0} {1}".format(code, result))
+
+        # make the challenge file
+        challenge = [c for c in json.loads(result)['challenges'] if c['type'] == "http-01"][0]
+        challenge['token'] = re.sub(r"[^A-Za-z0-9_\-]", "_", challenge['token'])
+        keyauthorization = "{0}.{1}".format(challenge['token'], thumbprint)
+        wellknown_path = os.path.join(acme_dir, challenge['token'])
+        wellknown_file = open(wellknown_path, "w")
+        wellknown_file.write(keyauthorization)
+        wellknown_file.close()
+
+        # check that the file is in place
+        wellknown_url = "http://{0}/.well-known/acme-challenge/{1}".format(
+            domain, challenge['token'])
+        try:
+            resp = urllib2.urlopen(wellknown_url)
+            assert resp.read().strip() == keyauthorization
+        except (urllib2.HTTPError, urllib2.URLError, AssertionError):
+            os.remove(wellknown_path)
+            raise ValueError("Wrote file to {0}, but couldn't download {1}".format(
+                wellknown_path, wellknown_url))
+
+        # notify challenge are met
+        code, result = _send_signed_request(challenge['uri'], {
+            "resource": "challenge",
+            "keyAuthorization": keyauthorization,
+        })
+        if code != 202:
+            raise ValueError("Error triggering challenge: {0} {1}".format(code, result))
+
+        # wait for challenge to be verified
+        while True:
+            try:
+                resp = urllib2.urlopen(challenge['uri'])
+                challenge_status = json.loads(resp.read())
+            except urllib2.HTTPError as e:
+                raise ValueError("Error checking challenge: {0} {1}".format(
+                    e.code, json.loads(e.read())))
+            if challenge_status['status'] == "pending":
+                time.sleep(2)
+            elif challenge_status['status'] == "valid":
+                sys.stderr.write("verified!\n")
+                os.remove(wellknown_path)
+                break
+            else:
+                raise ValueError("{0} challenge did not pass: {1}".format(
+                    domain, challenge_status))
+
+    # get the new certificate
+    sys.stderr.write("Signing certificate...")
+    proc = subprocess.Popen(["openssl", "req", "-in", csr, "-outform", "DER"],
+        stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    csr_der, err = proc.communicate()
+    code, result = _send_signed_request(CA + "/acme/new-cert", {
+        "resource": "new-cert",
+        "csr": _b64(csr_der),
+    })
+    if code != 201:
+        raise ValueError("Error signing certificate: {0} {1}".format(code, result))
+
+    # return signed certificate!
+    sys.stderr.write("signed!\n")
+    return """-----BEGIN CERTIFICATE-----\n{0}\n-----END CERTIFICATE-----\n""".format(
+        "\n".join(textwrap.wrap(base64.b64encode(result), 64)))
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        description=textwrap.dedent("""\
+            This script automates the process of getting a signed TLS certificate from
+            Let's Encrypt using the ACME protocol. It will need to be run on your server
+            and have access to your private account key, so PLEASE READ THROUGH IT! It's
+            only ~200 lines, so it won't take long.
+
+            ===Example Usage===
+            python acme_tiny.py --account-key ./account.key --csr ./domain.csr --acme-dir /usr/share/nginx/html/.well-known/acme-challenge/ > signed.crt
+            ===================
+
+            ===Example Crontab Renewal (once per month)===
+            0 0 1 * * python /path/to/acme_tiny.py --account-key /path/to/account.key --csr /path/to/domain.csr --acme-dir /usr/share/nginx/html/.well-known/acme-challenge/ > /path/to/signed.crt 2>> /var/log/acme_tiny.log
+            ==============================================
+            """)
+    )
+    parser.add_argument("--account-key", required=True, help="path to your Let's Encrypt account private key")
+    parser.add_argument("--csr", required=True, help="path to your certificate signing request")
+    parser.add_argument("--acme-dir", required=True, help="path to the .well-known/acme-challenge/ directory")
+
+    args = parser.parse_args()
+    signed_crt = get_crt(args.account_key, args.csr, args.acme_dir)
+    sys.stdout.write(signed_crt)

cert.sh

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+#!/bin/bash
+path=$(pwd)
+echo -n "Your Domain:"
+read domain
+docker-compose up -d
+cd $path/certs/
+openssl genrsa 4096 > $path/certs/$domain.key
+openssl req -new -sha256 -key $domain.key -subj "/CN=$domain" > $path/certs/$domain.csr
+cd $path/
+python $path/acme_tiny.py --account-key account.key --csr $path/certs/$domain.csr --acme-dir $path/www/ > $path/certs/$domain.crt
+wget -O - https://letsencrypt.org/certs/lets-encrypt-x1-cross-signed.pem > $path/certs/letsencrypt-intermediate.pem
+cat $path/certs/$domain.crt $path/certs/letsencrypt-intermediate.pem > $path/certs/$domain.pem
+rm $path/certs/letsencrypt-intermediate.pem
+rm $path/certs/$domain.crt
+cat $path/certs/$domain.pem > $path/certs/$domain.crt
+rm $path/certs/$domain.pem
+rm $path/certs/$domain.csr
+docker-compose stop

docker-compose.yml

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+nginx:
+    image: nginx
+    ports:
+        - "80:80"
+        - "443:443"
+    volumes:
+        - ./www:/usr/share/nginx/html
+        - ./nginx.conf:/nginx.conf
+    command: nginx -c /nginx.conf

nginx.conf

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+user  nginx;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log crit;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  51200;
+    multi_accept on;
+    use epoll;
+}
+
+http {
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    server_tokens off;
+    sendfile on;
+    tcp_nopush on;
+    tcp_nodelay on;
+    keepalive_timeout 15;
+    types_hash_max_size 2048;
+    include /etc/nginx/mime.types;
+    default_type application/octet-stream;
+    access_log off;
+    error_log off;
+    gzip on;
+    gzip_disable "msie6";
+    open_file_cache max=100;
+
+    server {
+        listen       80;
+        server_name  localhost;
+
+        location / {
+            root   /usr/share/nginx/html/;
+            index  index.html index.htm index.php;
+        }
+
+        location /.well-known/acme-challenge/ {
+            alias /usr/share/nginx/html/;
+            try_files $uri =404;
+
+        error_log  /var/log/nginx/php_error.log;
+        access_log  /var/log/nginx/php_access.log;
+    }
+}
+
+}
+
+daemon off;