├── .gitignore
├── templates
├── response-status.xml
├── response-error.xml
├── response-upload.xml
├── response-login.xml
└── index.html
├── requirements.txt
├── img
└── camera-modem.jpg
├── inotify.sh
├── mysession.py
├── mastodonlogin.py
├── flask-2.diff
├── config.toml
├── flask-3.diff
├── samsungxml.py
├── README.md
├── samsungserver.py
└── LICENSE.md
/.gitignore:
--------------------------------------------------------------------------------
1 | venv
2 |
--------------------------------------------------------------------------------
/templates/response-status.xml:
--------------------------------------------------------------------------------
1 |
2 |
--------------------------------------------------------------------------------
/requirements.txt:
--------------------------------------------------------------------------------
1 | cryptography
2 | flask
3 | flask-mail
4 | Flask-AutoIndex
5 | Mastodon.py
6 | toml
7 |
--------------------------------------------------------------------------------
/img/camera-modem.jpg:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/ge0rg/samsung-nx-emailservice/HEAD/img/camera-modem.jpg
--------------------------------------------------------------------------------
/templates/response-error.xml:
--------------------------------------------------------------------------------
1 |
2 |
--------------------------------------------------------------------------------
/templates/response-upload.xml:
--------------------------------------------------------------------------------
1 |
2 |
--------------------------------------------------------------------------------
/templates/response-login.xml:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
7 |
--------------------------------------------------------------------------------
/templates/index.html:
--------------------------------------------------------------------------------
1 |
2 |
3 | Samsung NX Email Service
4 |
5 |
6 | Samsung NX will never die!
7 | Hello, you are here:
8 | {{ useragent }}
9 |
source code
10 |
11 |
--------------------------------------------------------------------------------
/inotify.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 |
3 | WEBDIR=$(dirname $0)/data/
4 |
5 | while FN=$(inotifywait -q -e close_write -r --format %w%f $WEBDIR) ; do
6 | FOLDER=$(basename $(dirname "$FN"))
7 | echo "New upload in $FOLDER - $FN"
8 | # WARNING: do not run ImageMagick on attacker-supplied content!
9 | convert "$FN" -quality 90 "$FN.jpg" && mv "$FN.jpg" "$FN"
10 | python3 upload_xmpp.py -t image/jpeg "$FN"
11 | done
12 |
--------------------------------------------------------------------------------
/mysession.py:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env python3
2 |
3 | import json
4 | import os
5 | import uuid
6 |
7 | from werkzeug.utils import secure_filename
8 |
9 | class Session(dict):
10 | # dot.notation access to dictionary attributes
11 | __getattr__ = dict.get
12 | __setattr__ = dict.__setitem__
13 | __delattr__ = dict.__delitem__
14 |
15 |
16 | # Flask sessions store everything in secure cookies. We don't want cookies
17 | # and we can't store any data on the client anyway
18 | class MySession:
19 |
20 | def __init__(self, app):
21 | self.app = app
22 | self.SESSION_FOLDER = app.config['SESSION_FOLDER']
23 |
24 | def gen_fn(self, sid = None):
25 | if not sid:
26 | sid = uuid.uuid4().hex
27 | fn = secure_filename(sid + ".json")
28 | return sid, os.path.join(self.SESSION_FOLDER, fn)
29 |
30 | def clear(self, session):
31 | if 'sid' in session:
32 | sid, fn = self.gen_fn(session.sid)
33 | os.remove(fn)
34 | session.clear()
35 |
36 | def load(self, sid):
37 | try:
38 | sid, fn = self.gen_fn(sid)
39 | session = Session(json.load(open(fn, "r")))
40 | session.sid = sid
41 | except Exception as e:
42 | self.app.logger.warn("Invalid session %s: %s", sid, e)
43 | session = Session(sid=sid)
44 | return session
45 |
46 | def store(self, session):
47 | sid, fn = self.gen_fn(session.pop('sid', None))
48 | with open(fn, "w") as f:
49 | json.dump(session, f)
50 | session.sid = sid
51 | return sid
52 |
53 |
--------------------------------------------------------------------------------
/mastodonlogin.py:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env python3
2 |
3 | from argparse import ArgumentParser
4 | from mastodon import Mastodon
5 | from os import path
6 |
7 | APP = 'samsung-nx-emailservice'
8 | SCOPES = ['write:statuses', 'write:media']
9 |
10 | parser = ArgumentParser()
11 | parser.add_argument('url', help='URL of the mastodon server')
12 | parser.add_argument('-c', '--client-secret', dest='client_file', default=None,
13 | help='file in which to store the client credentials (debug purposes only)')
14 | parser.add_argument('-u', '--user-secret', dest='user_file', default='mastodon.secret',
15 | help='file in which to store the user credentials (mastodon.secret)')
16 |
17 | if __name__ == '__main__':
18 | args = parser.parse_args()
19 | # perform client registration
20 | client_id, client_secret = Mastodon.create_app(
21 | APP,
22 | user_agent = APP,
23 | website = 'https://github.com/ge0rg/samsung-nx-emailservice',
24 | scopes = SCOPES,
25 | api_base_url = args.url,
26 | to_file = args.client_file
27 | )
28 | # obtain OAuth URL for user
29 | mastodon = Mastodon(
30 | api_base_url=args.url,
31 | client_id=client_id,
32 | client_secret=client_secret,
33 | user_agent=APP
34 | )
35 | auth_url = mastodon.auth_request_url(scopes=SCOPES)
36 | print(f"\nPlease open the following in your browser:\n\n{auth_url}\n")
37 | # finalize user login
38 | mastodon.log_in(
39 | code=input("Enter the OAuth authorization code: "),
40 | scopes = SCOPES,
41 | to_file=args.user_file,
42 | )
43 |
44 |
--------------------------------------------------------------------------------
/flask-2.diff:
--------------------------------------------------------------------------------
1 | diff -uNr a/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py b/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py
2 | --- a/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py 2022-05-29 20:55:08.269740995 +0200
3 | +++ b/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py 2022-05-29 20:04:49.445095759 +0200
4 | @@ -164,7 +164,7 @@
5 | headers["content-disposition"]
6 | )
7 | name = cast(str, extra.get("name"))
8 | - filename = extra.get("filename")
9 | + filename = extra.get("fileName")
10 | if filename is not None:
11 | event = File(
12 | filename=filename,
13 | @@ -210,7 +210,8 @@
14 | self.state = State.COMPLETE
15 |
16 | if self.complete and isinstance(event, NeedData):
17 | - raise ValueError(f"Invalid form-data cannot parse beyond {self.state}")
18 | + print("fail fail fail", self.state)
19 | + #raise ValueError(f"Invalid form-data cannot parse beyond {self.state}")
20 |
21 | return event
22 |
23 | diff -uNr a/venv/lib/python3.8/site-packages/werkzeug/serving.py b/venv/lib/python3.8/site-packages/werkzeug/serving.py
24 | --- a/venv/lib/python3.8/site-packages/werkzeug/serving.py 2024-07-11 16:07:51.919405460 +0000
25 | +++ b/venv/lib/python3.8/site-packages/werkzeug/serving.py 2024-07-11 16:05:09.706332854 +0000
26 | @@ -285,6 +285,7 @@
27 | chunk_response = True
28 | self.send_header("Transfer-Encoding", "chunked")
29 |
30 | + self.connection.setsockopt(socket.IPPROTO_TCP, socket.TCP_CORK, True)
31 | # Always close the connection. This disables HTTP/1.1
32 | # keep-alive connections. They aren't handled well by
33 | # Python's http.server because it doesn't know how to
34 |
--------------------------------------------------------------------------------
/config.toml:
--------------------------------------------------------------------------------
1 | # where to store uploaded images and session files
2 | UPLOAD_FOLDER = "/tmp/"
3 | SESSION_FOLDER = "/tmp/"
4 |
5 | # serve the upload folder via http with no authentication
6 | INSECURE_DOWNLOAD = false
7 |
8 | # white-list of allowed senders (email and social accounts)
9 | SENDERS = ['Camera@samsungcamera.com']
10 |
11 | # CHANGE THIS! hmac256 mangle sender addresses into folders with this secret
12 | SECRET = "xiev5kaMeehaimub"
13 |
14 | # Email configuration: SMTP smarthost
15 | MAIL_SERVER = 'CHANGEME'
16 | MAIL_PORT = 587
17 | MAIL_USERNAME = 'username'
18 | MAIL_PASSWORD = 'password'
19 | MAIL_USE_TLS = true
20 |
21 | # Mastodon configuration
22 | [MASTODON]
23 | # if `TOKEN` is a file created by mastodonlogin.py, `BASE_URL` is not needed
24 | #BASE_URL = ''
25 | TOKEN = 'mastodon.secret'
26 | POSTSCRIPT = ' #photography #SamsungNX'
27 | VISIBILITY = 'unlisted' # 'direct', 'private', 'unlisted', 'public'
28 |
29 | # example instance config overriding only the visibility
30 | [MASTODON.pub]
31 | VISIBILITY = 'public'
32 |
33 | # example shell command not using stdin
34 | [SHELL]
35 | CMD = [ "./log.sh", "{sender}", "{recipient}", "{filename}" ]
36 |
37 | # example shell command extending the default `SHELL` action with stdin
38 | [SHELL.log]
39 | STDIN = """From: {sender}
40 | To: {recipient}
41 | Subject: {subject}
42 |
43 | {filename}
44 |
45 | {body}
46 | ."""
47 |
48 | # Override the default actions with alternatives (store, mastodon, shell, drop)
49 | # and optional instances
50 | [ACTIONS]
51 | facebook = "mastodon" # will post using the [MASTODON] config
52 | picasa = "store" # store into `$UPLOAD_FOLDER/$mangled_picasa_login`
53 | "masto@mydomain.com" = "mastodon" # will post using the [MASTODON] config
54 | "masto-public@mydomain.com" = "mastodon.pub" # will post using [MASTODON.pub]
55 | "store@mydomain.com" = "store.mailfolder" # will store into `$UPLOAD_FOLDER/mailfolder`
56 | "drop@mydomain.com" = "drop" # will not store/send
57 |
--------------------------------------------------------------------------------
/flask-3.diff:
--------------------------------------------------------------------------------
1 | diff -uNr a/venv/lib/python3.8/site-packages/werkzeug/http.py b/venv/lib/python3.8/site-packages/werkzeug/http.py
2 | --- a/venv/lib/python3.8/site-packages/werkzeug/http.py 2024-07-03 15:51:36.032723754 +0000
3 | +++ b/venv/lib/python3.8/site-packages/werkzeug/http.py 2024-07-03 15:42:32.829047441 +0000
4 | @@ -1279,7 +1279,7 @@
5 | path = quote(path, safe="%!$&'()*+,/:=@")
6 |
7 | if domain:
8 | - domain = domain.partition(":")[0].lstrip(".").encode("idna").decode("ascii")
9 | + domain = domain.partition(":")[0]
10 |
11 | if isinstance(max_age, timedelta):
12 | max_age = int(max_age.total_seconds())
13 | diff -uNr a/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py b/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py
14 | --- a/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py 2022-05-29 20:55:08.269740995 +0200
15 | +++ b/venv/lib/python3.8/site-packages/werkzeug/sansio/multipart.py 2022-05-29 20:04:49.445095759 +0200
16 | @@ -226,7 +226,8 @@
17 | self.state = State.COMPLETE
18 |
19 | if self.complete and isinstance(event, NeedData):
20 | - raise ValueError(f"Invalid form-data cannot parse beyond {self.state}")
21 | + print("fail fail fail", self.state)
22 | + #raise ValueError(f"Invalid form-data cannot parse beyond {self.state}")
23 |
24 | return event
25 |
26 | diff -uNr a/venv/lib/python3.8/site-packages/werkzeug/serving.py b/venv/lib/python3.8/site-packages/werkzeug/serving.py
27 | --- a/venv/lib/python3.8/site-packages/werkzeug/serving.py 2024-07-03 15:51:36.032723754 +0000
28 | +++ b/venv/lib/python3.8/site-packages/werkzeug/serving.py 2024-07-03 15:42:32.829047441 +0000
29 | @@ -285,6 +285,7 @@
30 | chunk_response = True
31 | self.send_header("Transfer-Encoding", "chunked")
32 |
33 | + self.connection.setsockopt(socket.IPPROTO_TCP, socket.TCP_CORK, True)
34 | # Always close the connection. This disables HTTP/1.1
35 | # keep-alive connections. They aren't handled well by
36 | # Python's http.server because it doesn't know how to
37 |
--------------------------------------------------------------------------------
/samsungxml.py:
--------------------------------------------------------------------------------
1 | from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
2 | from base64 import b64decode
3 | from urllib.parse import unquote
4 | import xml.etree.ElementTree as ET
5 |
6 | def decrypt_string(key, s):
7 | d = Cipher(algorithms.AES(key[0:16]), modes.CBC(key[16:])).decryptor()
8 | dec = d.update(s)
9 | return dec.decode('utf-8').rstrip('\0')
10 |
11 | def extract_credentials(xml):
12 | x_csk = xml.find("CryptSessionKey")
13 | x_user = xml.find("UserName")
14 | x_pw = xml.find("Password")
15 | x_oauth = xml.find("OAuth")
16 | x_appkey = xml.find("ApplicationKey")
17 |
18 | # HMX-QF30: TLS encrypted, no credential encryption
19 | if not 'Value' in x_csk.attrib:
20 | creds = {}
21 | creds['user'] = unquote(x_user.attrib['Value'])
22 | creds['pw'] = unquote(x_pw.attrib['Value'])
23 | creds['applicationkey'] = x_appkey.attrib['Value']
24 | return creds
25 |
26 | key = b64decode(x_csk.attrib['Value'])
27 | creds = { 'key': key, 'applicationkey': x_appkey.attrib['Value'] }
28 |
29 | if x_user is not None and x_pw is not None:
30 | enc_user = b64decode(unquote(x_user.attrib['Value']))
31 | enc_pw = b64decode(unquote(x_pw.attrib['Value']))
32 | creds['user'] = decrypt_string(key, enc_user)
33 | creds['pw'] = decrypt_string(key, enc_pw)
34 | if x_oauth is not None:
35 | creds['oauth'] = x_oauth.attrib['Version']
36 |
37 | return creds
38 |
39 | def extract_userAuthRequest(xml):
40 | # Example from NX300:
41 | # xxxeeeY
42 | loginID = xml.find("loginID").text
43 | password = xml.find("password").text
44 | return { 'user':loginID, 'pw':password }
45 |
46 | def decrypt_file(fn):
47 | key, user, pw = decrypt_credentials(ET.parse(fn).getroot())
48 | print('User:', user, 'Password:', pw)
49 |
50 | def extract_photo(xml):
51 | photo = xml.find("Photo")
52 | sessionkey = xml.attrib["SessionKey"]
53 | albumname = photo.find("Album").attrib["Name"]
54 | filename = photo.find("File").attrib["Name"]
55 | content = photo.find("Content").text
56 | return {
57 | 'sessionkey': sessionkey,
58 | 'album': albumname,
59 | 'filename': filename,
60 | 'content': content,
61 | }
62 |
63 | def extract_video(xml):
64 | photo = xml.find("Video")
65 | sessionkey = xml.attrib["SessionKey"]
66 | category = photo.find("Category")
67 | albumname = None
68 | owner = None
69 | if category:
70 | albumname = category.attrib["Name"]
71 | owner = category.attrib["OwnerID"]
72 | filename = photo.find("File").attrib["Name"]
73 | content = photo.find("Content").text
74 | return {
75 | 'sessionkey': sessionkey,
76 | 'album': albumname,
77 | 'owner': owner,
78 | 'filename': filename,
79 | 'content': content,
80 | }
81 |
82 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # Flask-based Samsung NX Camera Upload Server
2 |
3 | This code is a re-creation of Samsung's Social Network Services (SNS), an API
4 | that allows to send emails and social media posts from WiFi-enabled Samsung
5 | cameras (including Samsung NX, WBxxxF, ...). As the hostnames are hardcoded in
6 | the cameras, DNS redirects are needed to deploy this re-implementation.
7 |
8 | You can:
9 |
10 | - send emails
11 | - post to mastodon
12 | - store to a directory on the server (and use [inotify](inotify.sh) for further processing)
13 |
14 | 
15 |
16 | More information about the project can be found in:
17 |
18 | - **Blog post:** [Samsung NX camera to Mastodon bridge](https://op-co.de/blog/posts/samsung_nx_mastodon/)
19 | - **Talk (video and slides):** [Samsung Camera to Mastodon Bridge](https://fosdem.org/2025/schedule/event/fosdem-2025-5026-samsung-camera-to-mastodon-bridge/)
20 |
21 | This code is using Flask, but as the Samsung cameras are not fully compliant
22 | with the HTTP standard, we need to apply a minor fix.
23 |
24 | For flask 2.x.x, `flask-2.diff` will "fix" the case-insensitive fileName field
25 | for email upload and accept the missing multi-part end boundary.
26 |
27 | For flask 3.x.x, `flask-3.diff` will also accept the missing multi-part end
28 | boundary and additionally remove the dot stripping and IDNA conversion on
29 | cookie domains.
30 |
31 | ## Supported models
32 |
33 | The following camera models (generations) support sending e-mails or uploading
34 | files (see
35 | [Samsung WiFi Cameras](https://op-co.de/blog/posts/samsung_wifi_cameras/) for
36 | details on the compacts):
37 |
38 | - ST1000: doesn't work, using unknown API
39 | - EX2F, ST200F, DV300F: **working**
40 | - WBxxxF: see [camera table](https://op-co.de/blog/posts/samsung_wifi_cameras/#index2h2)
41 | - NX mini (M7MU): **working**
42 | - NX1000 (DRIMeIII): **unknown**
43 | - NX30, NX300(M), NX310, NX2000 (DRIMeIV): **working on NX300**, should work on the other models
44 | - NX500, NX1 (DRIMeV): **working on NX500**, should work equally on NX1
45 |
46 | **NX mini issues**: this used to be unreliable before the NX mini hotspot detection was
47 | [fixed](https://github.com/ge0rg/samsung-nx-emailservice/commit/b475ee7e83ad4434e13f0b9579f09bc0a023cfcc).
48 |
49 | ## Supported sharing services
50 |
51 | Tested on NX300, NX mini and NX500:
52 | - Email
53 | - Facebook
54 | - Picasa
55 |
56 | Not supported (services are using an OAuth authentication flow that is not
57 | reverse-engineered yet):
58 | - SkyDrive
59 | - Flickr
60 | - Dropbox
61 |
62 | ## Configuration
63 |
64 | ### Email
65 |
66 | To send emails, you need to configure an SMTP (smarthost) account in
67 | `config.toml`. All photos sent from the camera's "Send email" function will be
68 | sent accordingly, unless you define a different _action_ for an address.
69 |
70 | For email addresses, the supported _actions_ are:
71 |
72 | - `email` (default)
73 | - `store`
74 | - `mastodon`
75 | - `shell`
76 |
77 | See below for an explanation of the action values.
78 |
79 | ### Social Media
80 |
81 | Photos and videos sent via any of the supported emulated social media services
82 | will be stored under a subdirectory of the `UPLOAD_FOLDER`. A different
83 | _action_ can be defined:
84 |
85 | - `store` (default)
86 | - `mastodon`
87 |
88 | See below for an explanation of the action values.
89 |
90 | ### Mastodon
91 |
92 | #### Using the login script
93 |
94 | After installation, run the login script with the Mastodon server domain as
95 | a parameter:
96 |
97 | source ./venv/bin/activate
98 | ./mastodonlogin.py https://photog.social
99 |
100 | The script will print the Authorization page URL of your Mastodon instance,
101 | which you need to open in the browser. It will ask for a write permission for
102 | posts and media, in order to submit new posts.
103 |
104 | After authorizing the app, you will see an "authorization code" that you need
105 | to paste back into the waiting `mastodonlogin` script.
106 |
107 | The script will create a file `mastodon.secret` containing the server domain,
108 | the client secret and your user token. Please ensure that `config.toml` contains
109 | a reference to the file in the `[MASTODON]` section as `TOKEN=mastodon.secret`
110 | (the `BASE_URL` can be either omitted, or it must match the domain in the
111 | secret file).
112 |
113 | You can create multiple secret files for different instances and use action
114 | instances to post on different accounts.
115 |
116 | #### Manual configuration (alternative)
117 |
118 | Go to Settings / Developer on your Mastodon instance, and create a new
119 | application. You only need to allow `write:statuses` and `write:media`.
120 |
121 | Please call it "samsung-nx-emailservice" and link to this repositroy.
122 |
123 | Once created, you can copy "your access token" into the `TOKEN` variable and
124 | the server domain into `BASE_URL` in the `[MASTODON]` config section.
125 |
126 | ## Mapping services to actions
127 |
128 | It is possible to override what happens with uploaded images, based on the
129 | service chosen in the camera or the recipient email address.
130 |
131 | Some cameras, like the NX500, only support sending emails. With the mapping
132 | mechanism it is possible to define custom email recipient addresses to
133 | instead post images to Mastodon or store them on the server.
134 |
135 | ### Actions
136 |
137 | The _action_ method is meant to launch different actions based on which social
138 | network or recipient email address you select on the camera.
139 |
140 | You can define trigger email addresses like `mastodon@example.com` to make
141 | Mastodon posts from the "send email" menu on cameras that don't support social
142 | networks, like the NX500.
143 |
144 | You can also use "facebook" to store files on the servers and "picasa" to call
145 | an external script.
146 |
147 | Some _actions_ can also have _instances_, separated by a `"."`. Each instance
148 | corresponds to a dedicated configuration block. The instance configuration
149 | inherits the full default configuration!
150 |
151 | For example, `"masto@mydomain.com" = "mastodon"` will
152 | catch emails written to "masto@mydomain.com" and create a Mastodon post using
153 | the default _instance_ configured in `[MASTODON]`, whereas
154 | `"masto-public@mydomain.com" = "mastodon.pub"` will use the Mastodon
155 | _instance_ configured in `[MASTODON.pub]`.
156 |
157 | See below for the action values.
158 |
159 | #### `email` Action
160 |
161 | An email will be sent via the smarthost, using the camera-supplied From
162 | address, To address, Subject, and message body.
163 |
164 | Currently, no _instances_ are supported for `email`.
165 |
166 | #### `store` Action
167 |
168 | All uploaded files will be stored under a subdirectory of the `UPLOAD_FOLDER`.
169 | The subdirectory will be the HMAC-SHA256 hash of the username, protected by
170 | `SECRET` to prevent guessing.
171 |
172 | The respective directory can be monitored using inotify to implement further
173 | processing (`inotifywait -q -e close_write -r $UPLOAD_FOLDER`).
174 |
175 | If an _instance_ is specified, the instance name will override the destination
176 | folder name under `UPLOAD_FOLDER`.
177 |
178 | #### `mastodon` Action
179 |
180 | Files uploaded using this action will be converted into a Mastodon post.
181 |
182 | You **must** define alt-text for **all** images and videos. For social media,
183 | this is technically required because the camera does not tell in advance how
184 | many files are to be expected. For emails, this is used to help visually
185 | impaired people. Alt-text must follow the body, separated using the tilde
186 | character.
187 |
188 | For example, the message body "Holiday shot!\~fancy flower bed\~traffic sign"
189 | must be accompanied by two photos, and will be posted as follows:
190 |
191 | > Holiday shot!
192 | >
193 | > 📷️ *\*
194 | >
195 | > *\*
196 |
197 | Image 1: fancy flower bed
198 |
199 | Image 2: traffic sign
200 |
201 | An _instance_ specifies a dedicated configuration block that can override
202 | individual options.
203 |
204 | #### `shell` Action
205 |
206 | It is possible to call external commands as an action. By default, the `store`
207 | action will be executed first, creating the uploaded file(s) on disk.
208 |
209 | After that, the command specified as `CMD` will be executed in a *blocking*
210 | fashion, for *each* uploaded file individually.
211 |
212 | If the `STDIN` variable is defined, its content will be passed to the command's
213 | standard input.
214 |
215 | The config variables can use the following placeholders:
216 | - `{sender}` - the sender email address (camera config)
217 | - `{recipient}` - the recipient email address
218 | - `{filename}` - the absolute path to the uploaded file
219 | - `{subject}` - the email subject
220 | - `{body}` - the email body
221 |
222 | An _instance_ specifies a dedicated configuration block that can override
223 | individual options.
224 |
225 | #### `drop` Action
226 |
227 | Ignore the respective email recipient / do nothing.
228 |
229 | #### Action example
230 |
231 | To redirect all photos uploaded to "Facebook" or sent via email to
232 | "example@mastodon.social" to Mastodon, and to only store photos sent to
233 | "store@example.com", you need to define the following three actions:
234 |
235 | ```toml
236 | [ACTIONS]
237 | facebook = "mastodon"
238 | "example@mastodon.social" = "mastodon"
239 | "store@example.com" = "store"
240 | ```
241 |
242 | ## Installation
243 |
244 | 1. Change the path, secret and email / mastodon settings in `config.toml`
245 |
246 | 1. Add your email server credentials to `config.toml`
247 |
248 | 1. Install the virtual environment, patch flask, and run the (development) server:
249 |
250 | ```
251 | python3 -m venv venv
252 | source ./venv/bin/activate
253 | pip3 install -r requirements.txt
254 | patch -p1 < flask-3.diff # for flask 3.x.x
255 | sudo python3 samsungserver.py
256 | ```
257 |
258 | 3. Forward incoming traffic on port 80 to the server (running on `*:8080` by
259 | default)
260 |
261 | 4. On your camera, add the IP of your server to `/etc/hosts`:
262 |
263 | ```
264 | 192.168.1.23 gld.samsungosp.com www.samsungimaging.com www.ospserver.net snsgw.samsungmobile.com
265 | # For ST200F and WB850F also add this:
266 | 192.168.1.23 www.yahoo.co.kr
267 | # For WB35F, WB36F, WB37F, WB1100F also add this:
268 | 192.168.1.23 www.msn.com
269 | ```
270 |
271 | ## NX1/NX500
272 |
273 | You can directly write to the root filesystem on DRIMeV cameras:
274 |
275 | ```
276 | mount / -o remount,rw
277 | echo "192.168.0.11 gld.samsungosp.com www.samsungimaging.com www.ospserver.net snsgw.samsungmobile.com" > /etc/hosts
278 | mount / -o remount,ro
279 | ```
280 |
281 | ## NX300/NX30/NX2000
282 |
283 | The DRIMeIV cameras have a read-only rootfs that gets reset on restart. You need to put the `hosts` file onto the SD card and copy it to /etc from `autoexec.sh`:
284 |
285 | ```
286 | mount / -o remount,rw
287 | cp /mnt/mmc/hosts /etc
288 | mount / -o remount,ro
289 | ```
290 |
291 | ## Custom DNS server
292 |
293 | You can add the DNS entries to your local / custom DNS server. **It is not
294 | advised to run a public resolver though!**
295 |
296 | You can either add the names to the global `/etc/hosts` file or have a custom
297 | file like `/etc/hosts.samsungnx` which you need to inform the DNS server about.
298 |
299 | ### dnsmasq
300 |
301 | Add your custom hosts file to dnsmasq as follows:
302 |
303 | `dnsmasq ... -addn-hosts=/etc/hosts.samsungnx`
304 |
305 | ## No support for other camera models
306 |
307 | The firmware for other models must be patched to replace the hostname. So far,
308 | no reverse engineering efforts have been made to understand the logic and to
309 | be able to change individual parts.
310 |
--------------------------------------------------------------------------------
/samsungserver.py:
--------------------------------------------------------------------------------
1 | #!/usr/bin/env python3
2 |
3 | import os
4 | import toml
5 | import base64
6 | import hmac
7 | import email.utils
8 | import subprocess
9 | import time
10 |
11 | from mysession import MySession
12 | import samsungxml
13 |
14 | from flask import Flask, abort, jsonify, request, redirect, render_template, url_for, make_response
15 | from xml.etree import ElementTree as ET
16 | from werkzeug.utils import secure_filename
17 |
18 | from flask_autoindex import AutoIndex
19 | from flask_mail import Mail, Message
20 |
21 | from mastodon import Mastodon
22 |
23 | app = Flask(__name__)
24 | app.config.from_file(os.getenv("CONFIG", "config.toml"), load=toml.load)
25 |
26 | mysession = MySession(app)
27 |
28 | mail = Mail(app)
29 |
30 | def get_config(action, instance):
31 | """get the config dict for a given action ('SHELL', 'MASTODON') and its respective instance, if given. Instances inherit the default action config!"""
32 | if instance: # and app.config[module].get(instance):
33 | # get defaults and override with specific config
34 | conf = app.config[action]
35 | conf.update(app.config[action][instance])
36 | return conf
37 | else:
38 | return app.config[action]
39 |
40 | MASTODON_INSTANCES = {}
41 |
42 | def get_mastodon_instance(instance):
43 | app.logger.debug("Requested mastodon instance for %s", instance)
44 | if instance in MASTODON_INSTANCES:
45 | app.logger.debug("Found %s", MASTODON_INSTANCES[instance].api_base_url)
46 | return MASTODON_INSTANCES[instance]
47 | conf = get_config('MASTODON', instance)
48 | masto = Mastodon(
49 | access_token=conf['TOKEN'],
50 | api_base_url=conf.get('BASE_URL'),
51 | user_agent='samsung-nx-emailservice')
52 | masto._appconfig = conf
53 | MASTODON_INSTANCES[instance] = masto
54 | app.logger.debug("Initialized %s", MASTODON_INSTANCES[instance].api_base_url)
55 | return masto
56 |
57 |
58 | # auto-index (for "secret" directories)
59 | idx = None
60 | if app.config['INSECURE_DOWNLOAD']:
61 | idx = AutoIndex(app, browse_root=app.config['UPLOAD_FOLDER'], add_url_rules=False)
62 |
63 | def mangle_addr(email, secret=app.config['SECRET']):
64 | key = bytes(secret, 'utf-8')
65 | sig = hmac.new(key, bytes(email, 'utf-8'), digestmod='sha256')
66 | return base64.urlsafe_b64encode(sig.digest()[:15]).decode('ascii')
67 |
68 | def get_action(target, default_action):
69 | """return the override action from the config or the default action if no override is set"""
70 | mapping = app.config['ACTIONS'].get(target, default_action)
71 | if '.' in mapping:
72 | return mapping.split('.')
73 | else:
74 | return (mapping, None)
75 |
76 | def update_session_action(session, target=None):
77 | if target:
78 | session.site = target
79 | action, instance = get_action(session.site, 'store')
80 | session.instance = instance
81 | if instance:
82 | session.dir = instance
83 | return action, instance
84 |
85 |
86 |
87 | def mastodon_post_image(instance, content, content_type, description):
88 | if content_type == "image/pjpeg":
89 | content_type = "image/jpeg"
90 | mastodon = get_mastodon_instance(instance)
91 | f_meta = mastodon.media_post(content, content_type, description=description)
92 | app.logger.debug("Posted image: %s", f_meta)
93 | return f_meta['id']
94 |
95 | def email_store_files(instance, addr, recipient, files):
96 | dirname = mangle_addr(addr)
97 | if instance:
98 | dirname = instance
99 | store = os.path.join(app.config['UPLOAD_FOLDER'], dirname)
100 | os.makedirs(store, exist_ok = True)
101 | filenames = []
102 | for f in files.getlist('binary'):
103 | fn = os.path.join(store, secure_filename(f.filename))
104 | app.logger.info("Saving %s", fn)
105 | f.save(fn)
106 | filenames.append(fn)
107 | return filenames
108 |
109 | def email_mastodon_post(instance, body, files):
110 | media_ids = []
111 | body_alt = body.split('~')
112 | images = files.getlist('binary')
113 | if len(body_alt) != 1 + len(images):
114 | app.logger.warning('Body does not have enough alt text for %d images: %s', len(images), body)
115 | abort(400, 'No alt-text')
116 | mastodon = get_mastodon_instance(instance)
117 | body = body_alt.pop(0) + '\n\n' + mastodon._appconfig['POSTSCRIPT']
118 | for f in images:
119 | image_id = mastodon_post_image(instance, f.read(), f.mimetype, body_alt.pop(0))
120 | f.seek(0)
121 | media_ids.append(image_id)
122 | app.logger.debug("Image IDs: %s", ', '.join([str(i) for i in media_ids]))
123 | meta = mastodon.status_post(body, media_ids=media_ids, visibility=mastodon._appconfig['VISIBILITY'])
124 | app.logger.debug("Posted status: %s", meta)
125 |
126 | def social_store_file(session, data, filename):
127 | store = os.path.join(app.config['UPLOAD_FOLDER'], secure_filename(session.dir))
128 | os.makedirs(store, exist_ok = True)
129 | fn = os.path.join(store, secure_filename(filename))
130 | app.logger.info("Saving %s" % fn)
131 | with open(fn, "wb") as f:
132 | f.write(data)
133 |
134 | def social_mastodon_post(session, data, content_type):
135 | if not 'media' in session:
136 | session.media = []
137 | body = session.content
138 | body_alt = body.split('~')
139 | mastodon = get_mastodon_instance(session.instance)
140 | body = body_alt.pop(0) + '\n\n📷️ ' + session.album + '\n\n' + mastodon._appconfig['POSTSCRIPT']
141 |
142 | if len(body_alt) == 0:
143 | abort(400, 'No alt-text')
144 | if len(body_alt) <= len(session.media):
145 | abort(400, 'Not enough alt-text')
146 |
147 | # get N'th alt-text for N'th image upload
148 | image_id = mastodon_post_image(session.instance, data, content_type, body_alt[len(session.media)])
149 | session.media.append(image_id)
150 |
151 | app.logger.debug("Image IDs: %s", ', '.join([str(i) for i in session.media]))
152 | app.logger.debug(body_alt)
153 | if len(body_alt) == len(session.media):
154 | # all alt-text elements have been consumed, this was the last photo
155 | meta = mastodon.status_post(body, media_ids=session.media, visibility=mastodon._appconfig['VISIBILITY'])
156 | app.logger.debug("Posted status: %s", meta)
157 | mysession.store(session)
158 |
159 | def email_shell(instance, addr, recipient, body, subject, files):
160 | filenames = email_store_files(instance, addr, recipient, files)
161 | conf = get_config('SHELL', instance)
162 | for fn in filenames:
163 | values = {
164 | 'filename': fn,
165 | 'sender': addr,
166 | 'recipient': recipient,
167 | 'subject': subject,
168 | 'body': body,
169 | }
170 | if 'STDIN' in conf:
171 | stdin = conf['STDIN'].format(**values)
172 | else:
173 | stdin = None
174 | cmd = [c.format(**values) for c in conf['CMD']]
175 | app.logger.debug("SHELL: %s", ' '.join(cmd))
176 | proc = subprocess.Popen(cmd, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE, text=True)
177 | outs, errs = proc.communicate(input=stdin)
178 | app.logger.debug("STDOUT: %s", outs)
179 | app.logger.debug("STDERR: %s", errs)
180 |
181 |
182 | def social_shell():
183 | pass
184 |
185 | @app.route('/')
186 | def autoindex(path='.'):
187 | if idx:
188 | return idx.render_autoindex(path, sort_by='name', order=1)
189 | abort(404)
190 |
191 |
192 | next_redirect = True
193 |
194 | def alternate_response(title, redir_to, cookie_domain):
195 | global next_redirect
196 | if next_redirect:
197 | response = redirect(redir_to, 302)
198 | else:
199 | response = make_response(title, 200)
200 | response.set_cookie('samsung', 'hotspot', domain=cookie_domain)
201 | next_redirect = not next_redirect
202 | return response
203 |
204 | @app.route('/')
205 | def home():
206 | host = (request.headers.get('Host') or "")
207 | if host == "gld.samsungosp.com":
208 | # old response from 2013
209 | #return make_response("200 OK\n", 200)
210 | # response as expected by NX mini fw 1.10
211 | return make_response("", 200, {'ETag': '"deadbeef"', 'Server': 'nginx/notreally'})
212 | if host == "www.yahoo.co.kr":
213 | return alternate_response('YAHOO!', 'http://yahoo.com', '.yahoo.co.kr')
214 | if host == "www.msn.com":
215 | # WB37F doesn't accept a redirect, wants a cookie instead
216 | return alternate_response('MSN', 'http://msn.com', '.msn.com')
217 | return render_template('index.html', useragent=request.user_agent)
218 |
219 | # queried by ST1000
220 | @app.route('/security/sso/initialize/time')
221 | def init_time():
222 | return f'{int(time.time()*1000)}'
223 |
224 | # NX300 "AllShare" login
225 | @app.route('/security/sso/userprofiles/authentication/emailid', methods=['POST'])
226 | def authentication_emailid():
227 | d = request.get_data()
228 | app.logger.debug("POST payload: %s", d)
229 | xml = ET.fromstring(d)
230 | creds = samsungxml.extract_userAuthRequest(xml)
231 | if not creds['user'] in app.config['SENDERS']:
232 | return "Login failed", 401
233 | app.logger.warn("Not yet reverse-engineered API endpoint")
234 | abort(500, 'Unknown API')
235 |
236 |
237 | # queried by ST1000, response syntax unknown
238 | @app.route('/social/columbus/serviceproviders/list')
239 | def serviceproviders_list():
240 | return "TODO"
241 |
242 | SITES = [
243 | # from NX300 reverse engineering
244 | "facebook", "picasa", "youtube", "photobucket",
245 | "samsungimaging", "cyworld", "me2day", "poco",
246 | "weibo", "renren", "vkontakte", "odnoklassniki",
247 | "kakaostory", "evernote", "skydrive",
248 | # from NX mini
249 | "flickr", "dropbox",
250 | ]
251 |
252 | OAUTH_SITES = [
253 | "skydrive", "flickr", "dropbox",
254 | ]
255 |
256 | VIDEO_SITES = [
257 | "facebook", "youtube",
258 | ]
259 |
260 | @app.route('//auth',methods = ['POST'])
261 | def auth(site):
262 | if not site in SITES:
263 | abort(404)
264 | d = request.get_data()
265 | if not d:
266 | abort(400, 'Empty POST payload') # sometimes sent by NX300?!
267 | xml = ET.fromstring(d)
268 | method = xml.attrib["Method"]
269 | app.logger.debug("auth %s for site %s", method, site)
270 | if method == 'logout':
271 | return "Logged out for real!"
272 | if site in OAUTH_SITES:
273 | return render_template('response-error.xml',
274 | errcode=401, errsubcode=0,
275 | comment="OAuth not supported"), 401
276 | creds = samsungxml.extract_credentials(xml)
277 | app.logger.debug("site %s auth request: %s", site, creds)
278 | if not creds['user'] in app.config['SENDERS']:
279 | return render_template('response-error.xml',
280 | errcode=401, errsubcode=0,
281 | comment="Login failed"), 401
282 | # HACK: create mangled folder name as pseudo-session
283 | dirname = mangle_addr(creds['user'])
284 | session = mysession.load(None)
285 | session.dir = dirname
286 | update_session_action(session, site)
287 | session.user = creds['user']
288 | mysession.store(session)
289 | app.logger.info(f"User {creds['user']} logged in, creating {dirname}, session {session.sid}...")
290 | store = os.path.join(app.config['UPLOAD_FOLDER'], dirname)
291 | os.makedirs(store, exist_ok = True)
292 | t= render_template('response-login.xml',
293 | sessionkey=session['sid'],
294 | csk=session['sid'],
295 | screenname="Samsung NX Lover"
296 | )
297 | app.logger.debug(t)
298 | return t
299 |
300 | @app.route('//photo',methods = ['POST'])
301 | def photo(site):
302 | if not site in SITES:
303 | abort(404)
304 | d = request.get_data()
305 | xml = ET.fromstring(d)
306 | photo = samsungxml.extract_photo(xml)
307 | sid = photo['sessionkey']
308 | session = mysession.load(sid)
309 | update_session_action(session, site)
310 | app.logger.debug("Session: %s", session)
311 | if not 'user' in session:
312 | app.logger.warning("Unknown session key %s: %s", photo['sessionkey'], session['sid'])
313 | return render_template('response-error.xml',
314 | errcode=401, errsubcode=0,
315 | comment="Session expired"), 401
316 | if 'content' in session and session['content'] != photo['content']:
317 | app.logger.warning("Content changed, this is a new upload!")
318 | session.media = []
319 | session.conent = ""
320 | session.update(photo)
321 | mysession.store(session)
322 | app.logger.debug("site %s photo request: %s from user: %s", site, photo, session['user'])
323 | dirname = os.path.join(app.config['UPLOAD_FOLDER'], secure_filename(session['dir']))
324 | app.logger.info(f"Upload {photo['filename']} into {dirname}...")
325 | if not os.path.isdir(dirname):
326 | app.logger.warning(f"Upload directory for {session['user']} does not exist: {dirname}")
327 | return render_template('response-error.xml',
328 | errcode=401, errsubcode=0,
329 | comment="Login failed"), 401
330 | return render_template('response-upload.xml', **photo)
331 |
332 | @app.route('//video',methods = ['POST'])
333 | def video(site):
334 | if not site in VIDEO_SITES:
335 | abort(404)
336 | d = request.get_data()
337 | xml = ET.fromstring(d)
338 | photo = samsungxml.extract_video(xml)
339 | app.logger.debug("site %s video request: %s", site, photo)
340 | sid = photo['sessionkey']
341 | session = mysession.load(sid)
342 | update_session_action(session, site)
343 | if not 'user' in session:
344 | app.logger.warning("Unknown session key %s: %s", photo['sessionkey'], session['sid'])
345 | return render_template('response-error.xml',
346 | errcode=401, errsubcode=0,
347 | comment="Session expired"), 401
348 | session.update(photo)
349 | mysession.store(session)
350 | store = os.path.join(app.config['UPLOAD_FOLDER'], secure_filename(photo['sessionkey']))
351 | if not os.path.isdir(store):
352 | return render_template('response-error.xml',
353 | errcode=401, errsubcode=0,
354 | comment="Login failed"), 401
355 | return render_template('response-upload.xml', **photo)
356 |
357 | @app.route('/upload//', methods = ['PUT'])
358 | def upload(sessionkey, filename):
359 | d = request.get_data()
360 | app.logger.debug('request from %s, %s length: %d', sessionkey, filename, len(d))
361 | session = mysession.load(sessionkey)
362 | if not 'user' in session:
363 | return render_template('response-error.xml',
364 | errcode=401, errsubcode=0,
365 | comment="Session expired"), 401
366 | action, instance = update_session_action(session)
367 | app.logger.debug("Upload %s action is %s (instance=%s)!", session.site, action, instance)
368 | if action == 'store':
369 | social_store_file(session, d, filename)
370 | elif action == 'mastodon':
371 | social_mastodon_post(session, d, request.content_type)
372 | elif action == 'drop':
373 | pass
374 | return render_template('response-status.xml', status='succ')
375 |
376 | @app.route('/social/columbus/email',methods = ['POST', 'GET'])
377 | def sendmail():
378 | if request.method == 'POST':
379 | app.logger.debug('files: %s', request.files.to_dict())
380 | app.logger.debug('form: %s', request.form.to_dict())
381 | if 'message' in request.files:
382 | for ua in request.headers.get_all('user-agent'):
383 | app.logger.debug("User-Agent: %s", ua)
384 | xml = ET.parse(request.files['message'])
385 | sender = xml.find('sender').text
386 | name, addr = email.utils.parseaddr(sender)
387 | if not addr in app.config['SENDERS']:
388 | app.logger.warning("Sender %s not in whitelist %s" % (addr, app.config['SENDERS']))
389 | return render_template('response-error.xml',
390 | errcode=401, errsubcode=0,
391 | comment="Sender not in whitelist"), 401
392 | recipients = [e.text for e in xml.find('receiverList').findall('receiver')]
393 | subject = xml.find('title').text
394 | body = xml.find('body').text.replace("\nlanguage_sh100_utf8", "")
395 | app.logger.debug("From: %s", sender)
396 | app.logger.debug("To: %s", ", ".join(recipients))
397 | app.logger.debug("Subject: %s", subject)
398 | app.logger.debug("| %s", body)
399 | for r in sorted(recipients):
400 | action, instance = get_action(r, 'mail')
401 | app.logger.info("Recipient %s action is %s (instance=%s)!", r, action, instance)
402 | if action == 'shell':
403 | email_shell(instance, addr, r, body, subject, request.files)
404 | recipients.remove(r)
405 | elif action == 'store':
406 | email_store_files(instance, addr, r, request.files)
407 | recipients.remove(r)
408 | elif action == 'mastodon':
409 | email_mastodon_post(instance, body, request.files)
410 | recipients.remove(r)
411 | elif action == 'drop':
412 | recipients.remove(r)
413 | if not recipients:
414 | app.logger.info("No email recipients left!")
415 | return render_template('response-status.xml', status='succ')
416 |
417 | app.logger.debug("Sending email to %s", ",".join(recipients))
418 | msg = Message(subject=subject, sender=sender, recipients=recipients)
419 | msg.body = body
420 | for f in request.files.getlist('binary'):
421 | msg.attach(f.filename, f.mimetype, f.read())
422 | # TODO: exception handling
423 | mail.send(msg)
424 | else:
425 | app.logger.warning("No 'message' in POST or unpatched Flask")
426 | return render_template('response-error.xml',
427 | errcode=400, errsubcode=0,
428 | comment="No 'message' in POST or unpatched Flask"), 400
429 | return render_template('response-status.xml', status='succ')
430 | else:
431 | return redirect(url_for('home'))
432 |
433 | if __name__ == '__main__':
434 | app.run(debug = True, host='0.0.0.0', port=8080)
435 |
436 |
--------------------------------------------------------------------------------
/LICENSE.md:
--------------------------------------------------------------------------------
1 | # GNU GENERAL PUBLIC LICENSE
2 |
3 | Version 3, 29 June 2007
4 |
5 | Copyright (C) 2007 Free Software Foundation, Inc.
6 |
7 |
8 | Everyone is permitted to copy and distribute verbatim copies of this
9 | license document, but changing it is not allowed.
10 |
11 | ## Preamble
12 |
13 | The GNU General Public License is a free, copyleft license for
14 | software and other kinds of works.
15 |
16 | The licenses for most software and other practical works are designed
17 | to take away your freedom to share and change the works. By contrast,
18 | the GNU General Public License is intended to guarantee your freedom
19 | to share and change all versions of a program--to make sure it remains
20 | free software for all its users. We, the Free Software Foundation, use
21 | the GNU General Public License for most of our software; it applies
22 | also to any other work released this way by its authors. You can apply
23 | it to your programs, too.
24 |
25 | When we speak of free software, we are referring to freedom, not
26 | price. Our General Public Licenses are designed to make sure that you
27 | have the freedom to distribute copies of free software (and charge for
28 | them if you wish), that you receive source code or can get it if you
29 | want it, that you can change the software or use pieces of it in new
30 | free programs, and that you know you can do these things.
31 |
32 | To protect your rights, we need to prevent others from denying you
33 | these rights or asking you to surrender the rights. Therefore, you
34 | have certain responsibilities if you distribute copies of the
35 | software, or if you modify it: responsibilities to respect the freedom
36 | of others.
37 |
38 | For example, if you distribute copies of such a program, whether
39 | gratis or for a fee, you must pass on to the recipients the same
40 | freedoms that you received. You must make sure that they, too, receive
41 | or can get the source code. And you must show them these terms so they
42 | know their rights.
43 |
44 | Developers that use the GNU GPL protect your rights with two steps:
45 | (1) assert copyright on the software, and (2) offer you this License
46 | giving you legal permission to copy, distribute and/or modify it.
47 |
48 | For the developers' and authors' protection, the GPL clearly explains
49 | that there is no warranty for this free software. For both users' and
50 | authors' sake, the GPL requires that modified versions be marked as
51 | changed, so that their problems will not be attributed erroneously to
52 | authors of previous versions.
53 |
54 | Some devices are designed to deny users access to install or run
55 | modified versions of the software inside them, although the
56 | manufacturer can do so. This is fundamentally incompatible with the
57 | aim of protecting users' freedom to change the software. The
58 | systematic pattern of such abuse occurs in the area of products for
59 | individuals to use, which is precisely where it is most unacceptable.
60 | Therefore, we have designed this version of the GPL to prohibit the
61 | practice for those products. If such problems arise substantially in
62 | other domains, we stand ready to extend this provision to those
63 | domains in future versions of the GPL, as needed to protect the
64 | freedom of users.
65 |
66 | Finally, every program is threatened constantly by software patents.
67 | States should not allow patents to restrict development and use of
68 | software on general-purpose computers, but in those that do, we wish
69 | to avoid the special danger that patents applied to a free program
70 | could make it effectively proprietary. To prevent this, the GPL
71 | assures that patents cannot be used to render the program non-free.
72 |
73 | The precise terms and conditions for copying, distribution and
74 | modification follow.
75 |
76 | ## TERMS AND CONDITIONS
77 |
78 | ### 0. Definitions.
79 |
80 | "This License" refers to version 3 of the GNU General Public License.
81 |
82 | "Copyright" also means copyright-like laws that apply to other kinds
83 | of works, such as semiconductor masks.
84 |
85 | "The Program" refers to any copyrightable work licensed under this
86 | License. Each licensee is addressed as "you". "Licensees" and
87 | "recipients" may be individuals or organizations.
88 |
89 | To "modify" a work means to copy from or adapt all or part of the work
90 | in a fashion requiring copyright permission, other than the making of
91 | an exact copy. The resulting work is called a "modified version" of
92 | the earlier work or a work "based on" the earlier work.
93 |
94 | A "covered work" means either the unmodified Program or a work based
95 | on the Program.
96 |
97 | To "propagate" a work means to do anything with it that, without
98 | permission, would make you directly or secondarily liable for
99 | infringement under applicable copyright law, except executing it on a
100 | computer or modifying a private copy. Propagation includes copying,
101 | distribution (with or without modification), making available to the
102 | public, and in some countries other activities as well.
103 |
104 | To "convey" a work means any kind of propagation that enables other
105 | parties to make or receive copies. Mere interaction with a user
106 | through a computer network, with no transfer of a copy, is not
107 | conveying.
108 |
109 | An interactive user interface displays "Appropriate Legal Notices" to
110 | the extent that it includes a convenient and prominently visible
111 | feature that (1) displays an appropriate copyright notice, and (2)
112 | tells the user that there is no warranty for the work (except to the
113 | extent that warranties are provided), that licensees may convey the
114 | work under this License, and how to view a copy of this License. If
115 | the interface presents a list of user commands or options, such as a
116 | menu, a prominent item in the list meets this criterion.
117 |
118 | ### 1. Source Code.
119 |
120 | The "source code" for a work means the preferred form of the work for
121 | making modifications to it. "Object code" means any non-source form of
122 | a work.
123 |
124 | A "Standard Interface" means an interface that either is an official
125 | standard defined by a recognized standards body, or, in the case of
126 | interfaces specified for a particular programming language, one that
127 | is widely used among developers working in that language.
128 |
129 | The "System Libraries" of an executable work include anything, other
130 | than the work as a whole, that (a) is included in the normal form of
131 | packaging a Major Component, but which is not part of that Major
132 | Component, and (b) serves only to enable use of the work with that
133 | Major Component, or to implement a Standard Interface for which an
134 | implementation is available to the public in source code form. A
135 | "Major Component", in this context, means a major essential component
136 | (kernel, window system, and so on) of the specific operating system
137 | (if any) on which the executable work runs, or a compiler used to
138 | produce the work, or an object code interpreter used to run it.
139 |
140 | The "Corresponding Source" for a work in object code form means all
141 | the source code needed to generate, install, and (for an executable
142 | work) run the object code and to modify the work, including scripts to
143 | control those activities. However, it does not include the work's
144 | System Libraries, or general-purpose tools or generally available free
145 | programs which are used unmodified in performing those activities but
146 | which are not part of the work. For example, Corresponding Source
147 | includes interface definition files associated with source files for
148 | the work, and the source code for shared libraries and dynamically
149 | linked subprograms that the work is specifically designed to require,
150 | such as by intimate data communication or control flow between those
151 | subprograms and other parts of the work.
152 |
153 | The Corresponding Source need not include anything that users can
154 | regenerate automatically from other parts of the Corresponding Source.
155 |
156 | The Corresponding Source for a work in source code form is that same
157 | work.
158 |
159 | ### 2. Basic Permissions.
160 |
161 | All rights granted under this License are granted for the term of
162 | copyright on the Program, and are irrevocable provided the stated
163 | conditions are met. This License explicitly affirms your unlimited
164 | permission to run the unmodified Program. The output from running a
165 | covered work is covered by this License only if the output, given its
166 | content, constitutes a covered work. This License acknowledges your
167 | rights of fair use or other equivalent, as provided by copyright law.
168 |
169 | You may make, run and propagate covered works that you do not convey,
170 | without conditions so long as your license otherwise remains in force.
171 | You may convey covered works to others for the sole purpose of having
172 | them make modifications exclusively for you, or provide you with
173 | facilities for running those works, provided that you comply with the
174 | terms of this License in conveying all material for which you do not
175 | control copyright. Those thus making or running the covered works for
176 | you must do so exclusively on your behalf, under your direction and
177 | control, on terms that prohibit them from making any copies of your
178 | copyrighted material outside their relationship with you.
179 |
180 | Conveying under any other circumstances is permitted solely under the
181 | conditions stated below. Sublicensing is not allowed; section 10 makes
182 | it unnecessary.
183 |
184 | ### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
185 |
186 | No covered work shall be deemed part of an effective technological
187 | measure under any applicable law fulfilling obligations under article
188 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or
189 | similar laws prohibiting or restricting circumvention of such
190 | measures.
191 |
192 | When you convey a covered work, you waive any legal power to forbid
193 | circumvention of technological measures to the extent such
194 | circumvention is effected by exercising rights under this License with
195 | respect to the covered work, and you disclaim any intention to limit
196 | operation or modification of the work as a means of enforcing, against
197 | the work's users, your or third parties' legal rights to forbid
198 | circumvention of technological measures.
199 |
200 | ### 4. Conveying Verbatim Copies.
201 |
202 | You may convey verbatim copies of the Program's source code as you
203 | receive it, in any medium, provided that you conspicuously and
204 | appropriately publish on each copy an appropriate copyright notice;
205 | keep intact all notices stating that this License and any
206 | non-permissive terms added in accord with section 7 apply to the code;
207 | keep intact all notices of the absence of any warranty; and give all
208 | recipients a copy of this License along with the Program.
209 |
210 | You may charge any price or no price for each copy that you convey,
211 | and you may offer support or warranty protection for a fee.
212 |
213 | ### 5. Conveying Modified Source Versions.
214 |
215 | You may convey a work based on the Program, or the modifications to
216 | produce it from the Program, in the form of source code under the
217 | terms of section 4, provided that you also meet all of these
218 | conditions:
219 |
220 | - a) The work must carry prominent notices stating that you modified
221 | it, and giving a relevant date.
222 | - b) The work must carry prominent notices stating that it is
223 | released under this License and any conditions added under
224 | section 7. This requirement modifies the requirement in section 4
225 | to "keep intact all notices".
226 | - c) You must license the entire work, as a whole, under this
227 | License to anyone who comes into possession of a copy. This
228 | License will therefore apply, along with any applicable section 7
229 | additional terms, to the whole of the work, and all its parts,
230 | regardless of how they are packaged. This License gives no
231 | permission to license the work in any other way, but it does not
232 | invalidate such permission if you have separately received it.
233 | - d) If the work has interactive user interfaces, each must display
234 | Appropriate Legal Notices; however, if the Program has interactive
235 | interfaces that do not display Appropriate Legal Notices, your
236 | work need not make them do so.
237 |
238 | A compilation of a covered work with other separate and independent
239 | works, which are not by their nature extensions of the covered work,
240 | and which are not combined with it such as to form a larger program,
241 | in or on a volume of a storage or distribution medium, is called an
242 | "aggregate" if the compilation and its resulting copyright are not
243 | used to limit the access or legal rights of the compilation's users
244 | beyond what the individual works permit. Inclusion of a covered work
245 | in an aggregate does not cause this License to apply to the other
246 | parts of the aggregate.
247 |
248 | ### 6. Conveying Non-Source Forms.
249 |
250 | You may convey a covered work in object code form under the terms of
251 | sections 4 and 5, provided that you also convey the machine-readable
252 | Corresponding Source under the terms of this License, in one of these
253 | ways:
254 |
255 | - a) Convey the object code in, or embodied in, a physical product
256 | (including a physical distribution medium), accompanied by the
257 | Corresponding Source fixed on a durable physical medium
258 | customarily used for software interchange.
259 | - b) Convey the object code in, or embodied in, a physical product
260 | (including a physical distribution medium), accompanied by a
261 | written offer, valid for at least three years and valid for as
262 | long as you offer spare parts or customer support for that product
263 | model, to give anyone who possesses the object code either (1) a
264 | copy of the Corresponding Source for all the software in the
265 | product that is covered by this License, on a durable physical
266 | medium customarily used for software interchange, for a price no
267 | more than your reasonable cost of physically performing this
268 | conveying of source, or (2) access to copy the Corresponding
269 | Source from a network server at no charge.
270 | - c) Convey individual copies of the object code with a copy of the
271 | written offer to provide the Corresponding Source. This
272 | alternative is allowed only occasionally and noncommercially, and
273 | only if you received the object code with such an offer, in accord
274 | with subsection 6b.
275 | - d) Convey the object code by offering access from a designated
276 | place (gratis or for a charge), and offer equivalent access to the
277 | Corresponding Source in the same way through the same place at no
278 | further charge. You need not require recipients to copy the
279 | Corresponding Source along with the object code. If the place to
280 | copy the object code is a network server, the Corresponding Source
281 | may be on a different server (operated by you or a third party)
282 | that supports equivalent copying facilities, provided you maintain
283 | clear directions next to the object code saying where to find the
284 | Corresponding Source. Regardless of what server hosts the
285 | Corresponding Source, you remain obligated to ensure that it is
286 | available for as long as needed to satisfy these requirements.
287 | - e) Convey the object code using peer-to-peer transmission,
288 | provided you inform other peers where the object code and
289 | Corresponding Source of the work are being offered to the general
290 | public at no charge under subsection 6d.
291 |
292 | A separable portion of the object code, whose source code is excluded
293 | from the Corresponding Source as a System Library, need not be
294 | included in conveying the object code work.
295 |
296 | A "User Product" is either (1) a "consumer product", which means any
297 | tangible personal property which is normally used for personal,
298 | family, or household purposes, or (2) anything designed or sold for
299 | incorporation into a dwelling. In determining whether a product is a
300 | consumer product, doubtful cases shall be resolved in favor of
301 | coverage. For a particular product received by a particular user,
302 | "normally used" refers to a typical or common use of that class of
303 | product, regardless of the status of the particular user or of the way
304 | in which the particular user actually uses, or expects or is expected
305 | to use, the product. A product is a consumer product regardless of
306 | whether the product has substantial commercial, industrial or
307 | non-consumer uses, unless such uses represent the only significant
308 | mode of use of the product.
309 |
310 | "Installation Information" for a User Product means any methods,
311 | procedures, authorization keys, or other information required to
312 | install and execute modified versions of a covered work in that User
313 | Product from a modified version of its Corresponding Source. The
314 | information must suffice to ensure that the continued functioning of
315 | the modified object code is in no case prevented or interfered with
316 | solely because modification has been made.
317 |
318 | If you convey an object code work under this section in, or with, or
319 | specifically for use in, a User Product, and the conveying occurs as
320 | part of a transaction in which the right of possession and use of the
321 | User Product is transferred to the recipient in perpetuity or for a
322 | fixed term (regardless of how the transaction is characterized), the
323 | Corresponding Source conveyed under this section must be accompanied
324 | by the Installation Information. But this requirement does not apply
325 | if neither you nor any third party retains the ability to install
326 | modified object code on the User Product (for example, the work has
327 | been installed in ROM).
328 |
329 | The requirement to provide Installation Information does not include a
330 | requirement to continue to provide support service, warranty, or
331 | updates for a work that has been modified or installed by the
332 | recipient, or for the User Product in which it has been modified or
333 | installed. Access to a network may be denied when the modification
334 | itself materially and adversely affects the operation of the network
335 | or violates the rules and protocols for communication across the
336 | network.
337 |
338 | Corresponding Source conveyed, and Installation Information provided,
339 | in accord with this section must be in a format that is publicly
340 | documented (and with an implementation available to the public in
341 | source code form), and must require no special password or key for
342 | unpacking, reading or copying.
343 |
344 | ### 7. Additional Terms.
345 |
346 | "Additional permissions" are terms that supplement the terms of this
347 | License by making exceptions from one or more of its conditions.
348 | Additional permissions that are applicable to the entire Program shall
349 | be treated as though they were included in this License, to the extent
350 | that they are valid under applicable law. If additional permissions
351 | apply only to part of the Program, that part may be used separately
352 | under those permissions, but the entire Program remains governed by
353 | this License without regard to the additional permissions.
354 |
355 | When you convey a copy of a covered work, you may at your option
356 | remove any additional permissions from that copy, or from any part of
357 | it. (Additional permissions may be written to require their own
358 | removal in certain cases when you modify the work.) You may place
359 | additional permissions on material, added by you to a covered work,
360 | for which you have or can give appropriate copyright permission.
361 |
362 | Notwithstanding any other provision of this License, for material you
363 | add to a covered work, you may (if authorized by the copyright holders
364 | of that material) supplement the terms of this License with terms:
365 |
366 | - a) Disclaiming warranty or limiting liability differently from the
367 | terms of sections 15 and 16 of this License; or
368 | - b) Requiring preservation of specified reasonable legal notices or
369 | author attributions in that material or in the Appropriate Legal
370 | Notices displayed by works containing it; or
371 | - c) Prohibiting misrepresentation of the origin of that material,
372 | or requiring that modified versions of such material be marked in
373 | reasonable ways as different from the original version; or
374 | - d) Limiting the use for publicity purposes of names of licensors
375 | or authors of the material; or
376 | - e) Declining to grant rights under trademark law for use of some
377 | trade names, trademarks, or service marks; or
378 | - f) Requiring indemnification of licensors and authors of that
379 | material by anyone who conveys the material (or modified versions
380 | of it) with contractual assumptions of liability to the recipient,
381 | for any liability that these contractual assumptions directly
382 | impose on those licensors and authors.
383 |
384 | All other non-permissive additional terms are considered "further
385 | restrictions" within the meaning of section 10. If the Program as you
386 | received it, or any part of it, contains a notice stating that it is
387 | governed by this License along with a term that is a further
388 | restriction, you may remove that term. If a license document contains
389 | a further restriction but permits relicensing or conveying under this
390 | License, you may add to a covered work material governed by the terms
391 | of that license document, provided that the further restriction does
392 | not survive such relicensing or conveying.
393 |
394 | If you add terms to a covered work in accord with this section, you
395 | must place, in the relevant source files, a statement of the
396 | additional terms that apply to those files, or a notice indicating
397 | where to find the applicable terms.
398 |
399 | Additional terms, permissive or non-permissive, may be stated in the
400 | form of a separately written license, or stated as exceptions; the
401 | above requirements apply either way.
402 |
403 | ### 8. Termination.
404 |
405 | You may not propagate or modify a covered work except as expressly
406 | provided under this License. Any attempt otherwise to propagate or
407 | modify it is void, and will automatically terminate your rights under
408 | this License (including any patent licenses granted under the third
409 | paragraph of section 11).
410 |
411 | However, if you cease all violation of this License, then your license
412 | from a particular copyright holder is reinstated (a) provisionally,
413 | unless and until the copyright holder explicitly and finally
414 | terminates your license, and (b) permanently, if the copyright holder
415 | fails to notify you of the violation by some reasonable means prior to
416 | 60 days after the cessation.
417 |
418 | Moreover, your license from a particular copyright holder is
419 | reinstated permanently if the copyright holder notifies you of the
420 | violation by some reasonable means, this is the first time you have
421 | received notice of violation of this License (for any work) from that
422 | copyright holder, and you cure the violation prior to 30 days after
423 | your receipt of the notice.
424 |
425 | Termination of your rights under this section does not terminate the
426 | licenses of parties who have received copies or rights from you under
427 | this License. If your rights have been terminated and not permanently
428 | reinstated, you do not qualify to receive new licenses for the same
429 | material under section 10.
430 |
431 | ### 9. Acceptance Not Required for Having Copies.
432 |
433 | You are not required to accept this License in order to receive or run
434 | a copy of the Program. Ancillary propagation of a covered work
435 | occurring solely as a consequence of using peer-to-peer transmission
436 | to receive a copy likewise does not require acceptance. However,
437 | nothing other than this License grants you permission to propagate or
438 | modify any covered work. These actions infringe copyright if you do
439 | not accept this License. Therefore, by modifying or propagating a
440 | covered work, you indicate your acceptance of this License to do so.
441 |
442 | ### 10. Automatic Licensing of Downstream Recipients.
443 |
444 | Each time you convey a covered work, the recipient automatically
445 | receives a license from the original licensors, to run, modify and
446 | propagate that work, subject to this License. You are not responsible
447 | for enforcing compliance by third parties with this License.
448 |
449 | An "entity transaction" is a transaction transferring control of an
450 | organization, or substantially all assets of one, or subdividing an
451 | organization, or merging organizations. If propagation of a covered
452 | work results from an entity transaction, each party to that
453 | transaction who receives a copy of the work also receives whatever
454 | licenses to the work the party's predecessor in interest had or could
455 | give under the previous paragraph, plus a right to possession of the
456 | Corresponding Source of the work from the predecessor in interest, if
457 | the predecessor has it or can get it with reasonable efforts.
458 |
459 | You may not impose any further restrictions on the exercise of the
460 | rights granted or affirmed under this License. For example, you may
461 | not impose a license fee, royalty, or other charge for exercise of
462 | rights granted under this License, and you may not initiate litigation
463 | (including a cross-claim or counterclaim in a lawsuit) alleging that
464 | any patent claim is infringed by making, using, selling, offering for
465 | sale, or importing the Program or any portion of it.
466 |
467 | ### 11. Patents.
468 |
469 | A "contributor" is a copyright holder who authorizes use under this
470 | License of the Program or a work on which the Program is based. The
471 | work thus licensed is called the contributor's "contributor version".
472 |
473 | A contributor's "essential patent claims" are all patent claims owned
474 | or controlled by the contributor, whether already acquired or
475 | hereafter acquired, that would be infringed by some manner, permitted
476 | by this License, of making, using, or selling its contributor version,
477 | but do not include claims that would be infringed only as a
478 | consequence of further modification of the contributor version. For
479 | purposes of this definition, "control" includes the right to grant
480 | patent sublicenses in a manner consistent with the requirements of
481 | this License.
482 |
483 | Each contributor grants you a non-exclusive, worldwide, royalty-free
484 | patent license under the contributor's essential patent claims, to
485 | make, use, sell, offer for sale, import and otherwise run, modify and
486 | propagate the contents of its contributor version.
487 |
488 | In the following three paragraphs, a "patent license" is any express
489 | agreement or commitment, however denominated, not to enforce a patent
490 | (such as an express permission to practice a patent or covenant not to
491 | sue for patent infringement). To "grant" such a patent license to a
492 | party means to make such an agreement or commitment not to enforce a
493 | patent against the party.
494 |
495 | If you convey a covered work, knowingly relying on a patent license,
496 | and the Corresponding Source of the work is not available for anyone
497 | to copy, free of charge and under the terms of this License, through a
498 | publicly available network server or other readily accessible means,
499 | then you must either (1) cause the Corresponding Source to be so
500 | available, or (2) arrange to deprive yourself of the benefit of the
501 | patent license for this particular work, or (3) arrange, in a manner
502 | consistent with the requirements of this License, to extend the patent
503 | license to downstream recipients. "Knowingly relying" means you have
504 | actual knowledge that, but for the patent license, your conveying the
505 | covered work in a country, or your recipient's use of the covered work
506 | in a country, would infringe one or more identifiable patents in that
507 | country that you have reason to believe are valid.
508 |
509 | If, pursuant to or in connection with a single transaction or
510 | arrangement, you convey, or propagate by procuring conveyance of, a
511 | covered work, and grant a patent license to some of the parties
512 | receiving the covered work authorizing them to use, propagate, modify
513 | or convey a specific copy of the covered work, then the patent license
514 | you grant is automatically extended to all recipients of the covered
515 | work and works based on it.
516 |
517 | A patent license is "discriminatory" if it does not include within the
518 | scope of its coverage, prohibits the exercise of, or is conditioned on
519 | the non-exercise of one or more of the rights that are specifically
520 | granted under this License. You may not convey a covered work if you
521 | are a party to an arrangement with a third party that is in the
522 | business of distributing software, under which you make payment to the
523 | third party based on the extent of your activity of conveying the
524 | work, and under which the third party grants, to any of the parties
525 | who would receive the covered work from you, a discriminatory patent
526 | license (a) in connection with copies of the covered work conveyed by
527 | you (or copies made from those copies), or (b) primarily for and in
528 | connection with specific products or compilations that contain the
529 | covered work, unless you entered into that arrangement, or that patent
530 | license was granted, prior to 28 March 2007.
531 |
532 | Nothing in this License shall be construed as excluding or limiting
533 | any implied license or other defenses to infringement that may
534 | otherwise be available to you under applicable patent law.
535 |
536 | ### 12. No Surrender of Others' Freedom.
537 |
538 | If conditions are imposed on you (whether by court order, agreement or
539 | otherwise) that contradict the conditions of this License, they do not
540 | excuse you from the conditions of this License. If you cannot convey a
541 | covered work so as to satisfy simultaneously your obligations under
542 | this License and any other pertinent obligations, then as a
543 | consequence you may not convey it at all. For example, if you agree to
544 | terms that obligate you to collect a royalty for further conveying
545 | from those to whom you convey the Program, the only way you could
546 | satisfy both those terms and this License would be to refrain entirely
547 | from conveying the Program.
548 |
549 | ### 13. Use with the GNU Affero General Public License.
550 |
551 | Notwithstanding any other provision of this License, you have
552 | permission to link or combine any covered work with a work licensed
553 | under version 3 of the GNU Affero General Public License into a single
554 | combined work, and to convey the resulting work. The terms of this
555 | License will continue to apply to the part which is the covered work,
556 | but the special requirements of the GNU Affero General Public License,
557 | section 13, concerning interaction through a network will apply to the
558 | combination as such.
559 |
560 | ### 14. Revised Versions of this License.
561 |
562 | The Free Software Foundation may publish revised and/or new versions
563 | of the GNU General Public License from time to time. Such new versions
564 | will be similar in spirit to the present version, but may differ in
565 | detail to address new problems or concerns.
566 |
567 | Each version is given a distinguishing version number. If the Program
568 | specifies that a certain numbered version of the GNU General Public
569 | License "or any later version" applies to it, you have the option of
570 | following the terms and conditions either of that numbered version or
571 | of any later version published by the Free Software Foundation. If the
572 | Program does not specify a version number of the GNU General Public
573 | License, you may choose any version ever published by the Free
574 | Software Foundation.
575 |
576 | If the Program specifies that a proxy can decide which future versions
577 | of the GNU General Public License can be used, that proxy's public
578 | statement of acceptance of a version permanently authorizes you to
579 | choose that version for the Program.
580 |
581 | Later license versions may give you additional or different
582 | permissions. However, no additional obligations are imposed on any
583 | author or copyright holder as a result of your choosing to follow a
584 | later version.
585 |
586 | ### 15. Disclaimer of Warranty.
587 |
588 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
589 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
590 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
591 | WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
592 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
593 | A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
594 | PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
595 | DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
596 | CORRECTION.
597 |
598 | ### 16. Limitation of Liability.
599 |
600 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
601 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
602 | CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
603 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
604 | ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
605 | NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
606 | LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
607 | TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
608 | PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
609 |
610 | ### 17. Interpretation of Sections 15 and 16.
611 |
612 | If the disclaimer of warranty and limitation of liability provided
613 | above cannot be given local legal effect according to their terms,
614 | reviewing courts shall apply local law that most closely approximates
615 | an absolute waiver of all civil liability in connection with the
616 | Program, unless a warranty or assumption of liability accompanies a
617 | copy of the Program in return for a fee.
618 |
619 | END OF TERMS AND CONDITIONS
620 |
621 | ## How to Apply These Terms to Your New Programs
622 |
623 | If you develop a new program, and you want it to be of the greatest
624 | possible use to the public, the best way to achieve this is to make it
625 | free software which everyone can redistribute and change under these
626 | terms.
627 |
628 | To do so, attach the following notices to the program. It is safest to
629 | attach them to the start of each source file to most effectively state
630 | the exclusion of warranty; and each file should have at least the
631 | "copyright" line and a pointer to where the full notice is found.
632 |
633 |
634 | Copyright (C)
635 |
636 | This program is free software: you can redistribute it and/or modify
637 | it under the terms of the GNU General Public License as published by
638 | the Free Software Foundation, either version 3 of the License, or
639 | (at your option) any later version.
640 |
641 | This program is distributed in the hope that it will be useful,
642 | but WITHOUT ANY WARRANTY; without even the implied warranty of
643 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
644 | GNU General Public License for more details.
645 |
646 | You should have received a copy of the GNU General Public License
647 | along with this program. If not, see .
648 |
649 | Also add information on how to contact you by electronic and paper
650 | mail.
651 |
652 | If the program does terminal interaction, make it output a short
653 | notice like this when it starts in an interactive mode:
654 |
655 | Copyright (C)
656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
657 | This is free software, and you are welcome to redistribute it
658 | under certain conditions; type `show c' for details.
659 |
660 | The hypothetical commands \`show w' and \`show c' should show the
661 | appropriate parts of the General Public License. Of course, your
662 | program's commands might be different; for a GUI interface, you would
663 | use an "about box".
664 |
665 | You should also get your employer (if you work as a programmer) or
666 | school, if any, to sign a "copyright disclaimer" for the program, if
667 | necessary. For more information on this, and how to apply and follow
668 | the GNU GPL, see .
669 |
670 | The GNU General Public License does not permit incorporating your
671 | program into proprietary programs. If your program is a subroutine
672 | library, you may consider it more useful to permit linking proprietary
673 | applications with the library. If this is what you want to do, use the
674 | GNU Lesser General Public License instead of this License. But first,
675 | please read .
676 |
--------------------------------------------------------------------------------