├── gp ├── .gitignore ├── static ├── erricon.png ├── sorttable.js └── erricon.svg ├── .gitmodules ├── SciTE.properties ├── cgstat-fcgi.conf ├── templates └── template.html ├── cgstat.fcgi └── GPL /gp: -------------------------------------------------------------------------------- 1 | gpClient/gp/ -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.pyc 2 | -------------------------------------------------------------------------------- /static/erricon.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/wmde/cgstat/master/static/erricon.png -------------------------------------------------------------------------------- /static/sorttable.js: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/wmde/cgstat/master/static/sorttable.js -------------------------------------------------------------------------------- /.gitmodules: -------------------------------------------------------------------------------- 1 | [submodule "gpClient"] 2 | path = gpClient 3 | url = https://github.com/wmde/catgraph-client-python/ 4 | -------------------------------------------------------------------------------- /SciTE.properties: -------------------------------------------------------------------------------- 1 | #OMFG 2 | command.go.*.fcgi=SUDO_ASKPASS=/usr/bin/ssh-askpass sudo -A bash -c "cp cgstat-fcgi.conf /etc/lighttpd/conf-available/10-cgstat-fcgi.conf; service lighttpd restart" 3 | command.go.*.conf=SUDO_ASKPASS=/usr/bin/ssh-askpass sudo -A bash -c "cp cgstat-fcgi.conf /etc/lighttpd/conf-available/10-cgstat-fcgi.conf; service lighttpd restart" 4 | command.go.*.html=SUDO_ASKPASS=/usr/bin/ssh-askpass sudo -A bash -c "cp cgstat-fcgi.conf /etc/lighttpd/conf-available/10-cgstat-fcgi.conf; service lighttpd restart" 5 | -------------------------------------------------------------------------------- /cgstat-fcgi.conf: -------------------------------------------------------------------------------- 1 | # this goes into /etc/lighttpd/conf-available/ (local) or ~/.lighttpd.conf (tool labs) 2 | 3 | 4 | #debug.log-request-handling= "enable" 5 | # apparently i don't need all this crap -- just disable fastcgi handling for static files below... 6 | #server.modules += ("mod_rewrite") 7 | #alias.url+= ( 8 | # "^.*/static" => server.document-root + "/static", 9 | #) 10 | #url.rewrite-once+= ( 11 | # "^.*static/(.*)$" => "/cgstat/static/$1" 12 | #) 13 | 14 | 15 | 16 | # setup app fastcgi server 17 | #fastcgi.debug = 1 18 | $HTTP["url"] !~ "^/cgstat/static" { 19 | $HTTP["url"] !~ "hostmap" { 20 | fastcgi.server += ( 21 | "/cgstat" => 22 | (( 23 | "socket" => "/tmp/cgstat-fcgi.sock", 24 | "bin-path" => server.document-root + "/cgstat.fcgi", 25 | "check-local" => "disable", 26 | "max-procs" => 1 27 | )) 28 | ) 29 | } 30 | } 31 | 32 | # this will enable counters http://tools.wmflabs.org/catgraph/server-status (resp: .../server-statistics) 33 | server.modules += ("mod_status") 34 | status.status-url = "/cgstat/server-status" 35 | status.statistics-url = "/cgstat/server-statistics" 36 | -------------------------------------------------------------------------------- /static/erricon.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 21 | 23 | 41 | 43 | 44 | 46 | image/svg+xml 47 | 49 | 50 | 51 | 52 | 53 | 58 | 61 | 66 | 67 | 68 | 69 | -------------------------------------------------------------------------------- /templates/template.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | {{ title }} 7 | 8 | 9 | 10 | 11 | 12 | 68 | 69 | 70 | 71 | 81 | 82 | 83 | 105 | 106 |
107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | 116 | {% for graph in graphs %} 117 | 118 | 119 | 120 | 121 | 122 | 123 | 124 | {% endfor %} 125 |
Graph NameHostArcsRSSVirtAge
{{ graph.name }}{{ graph.host }}
126 |
127 | 206 | 216 | 220 | 221 | 222 | 223 | -------------------------------------------------------------------------------- /cgstat.fcgi: -------------------------------------------------------------------------------- 1 | #!/usr/bin/python 2 | # -*- coding:utf-8 -*- 3 | # cgstat: Web-based status app for CatGraph 4 | # Copyright (C) Wikimedia Deutschland e.V. 5 | # Authors: Johannes Kroll 6 | # 7 | # This program is free software: you can redistribute it and/or modify 8 | # it under the terms of the GNU General Public License as published by 9 | # the Free Software Foundation, either version 3 of the License, or 10 | # (at your option) any later version. 11 | # 12 | # This program is distributed in the hope that it will be useful, 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 | # GNU General Public License for more details. 16 | # 17 | # You should have received a copy of the GNU General Public License 18 | # along with this program. If not, see . 19 | 20 | import sys 21 | import time, datetime 22 | import copy 23 | import select 24 | import socket 25 | import resource 26 | import requests 27 | import asyncore 28 | import flask 29 | import json 30 | from flask import Flask, request 31 | from flup.server.fcgi import WSGIServer 32 | from gp import * 33 | 34 | app= Flask(__name__) 35 | myhostname= socket.gethostname() 36 | 37 | # generate information about all known graphs, used as template parameters 38 | def gengraphinfo(hostmap): 39 | for graph in sorted(hostmap): #, key=lambda g:hostmap[g]): 40 | yield( { "name": graph, "host": hostmap[graph] } ) 41 | 42 | def gengraphstats_old(hostmap): 43 | transports= {} # socket fileno => ClientTransport 44 | read_sockets= [] # filenos for select() 45 | nofile= resource.getrlimit(resource.RLIMIT_NOFILE) 46 | resource.setrlimit(resource.RLIMIT_NOFILE, (nofile[1],nofile[1])) 47 | #~ i= 0 48 | for graph in hostmap: 49 | transport= client.ClientTransport(str(hostmap[graph]), socktimeout=30) 50 | gp= client.Connection( transport, str(graph) ) 51 | #~ time.sleep(0.01) 52 | try: 53 | transport.connect() 54 | gp.use_graph(str(graph)) 55 | transport.graphname= graph 56 | transport.send("help\n") 57 | transports[transport.socket.fileno()]= transport 58 | read_sockets.append(transport.socket.fileno()) 59 | except Exception as ex: 60 | yield """document.getElementById('arccount_%s').innerHTML="%s";""" % (graph, str(ex)) 61 | #~ i+= 1 62 | #~ if i>(302-25): 63 | #~ break 64 | 65 | #~ yield "read_sockets: " + str(read_sockets) 66 | 67 | starttime= time.time() 68 | while (len(read_sockets)) and (time.time()-starttime<30): 69 | (read_ready,wr_ready,exc)= select.select(read_sockets, [], [], 5) 70 | for socket in read_ready: 71 | content= "" 72 | for line in transports[socket].make_source(): 73 | #~ yield line 74 | content+= str(line) + '
' 75 | yield "document.getElementById('arccount_%s').innerHTML+= '%s';" % (transports[socket].graphname, line[0].strip()+'
') 76 | yield """document.getElementById('arccount_%s').innerHTML="[OK]";""" % (transports[socket].graphname) 77 | read_sockets.remove(socket) 78 | transports[socket].close() 79 | del transports[socket] 80 | for socket in read_sockets: 81 | #~ read_sockets.remove(socket) 82 | transports[socket].close() 83 | del transports[socket] 84 | 85 | #~ yield """document.getElementById('arccount_%s').innerHTML='asdf';""" % graph 86 | 87 | 88 | def gengraphstats(hostmap): 89 | poll= select.poll() 90 | transports= {} # socket fileno => ClientTransport 91 | nofile= resource.getrlimit(resource.RLIMIT_NOFILE) 92 | resource.setrlimit(resource.RLIMIT_NOFILE, (nofile[1],nofile[1])) 93 | error_status= { "status": { "graph": "XXXX", "content": { "arccount": "ERROR", "rss": "ERROR", "virt": "ERROR", "age": "ERROR" }, "errormsg": {} } } 94 | erricon_set= False 95 | for graph in hostmap: 96 | transport= client.ClientTransport(str(hostmap[graph]), socktimeout=5) 97 | gp= client.Connection( transport, str(graph) ) 98 | try: 99 | stat= copy.deepcopy(error_status) 100 | stat["status"]["graph"]= graph 101 | transport.connect() 102 | reply= gp.execute('use-graph %s' % str(graph)) 103 | transport.graphname= graph 104 | transports[transport.hin.fileno()]= transport 105 | poll.register(transport.hin.fileno(), select.POLLIN|select.POLLERR|select.POLLHUP|select.POLLNVAL|select.POLLPRI) 106 | for v in stat["status"]["content"]: stat["status"]["content"][v]= "..." 107 | yield stat 108 | transport.send("stats q\n") 109 | transport.send("list-meta\n") 110 | except Exception as ex: 111 | stat= copy.deepcopy(error_status) 112 | stat["status"]["graph"]= graph 113 | for v in stat["status"]["content"]: stat["status"]["errormsg"][v]= "%s" % str(ex) 114 | yield stat 115 | if not erricon_set: 116 | yield { "favicon": "/cgstat/static/erricon.png" } 117 | erricon_set= True 118 | 119 | pollstart= time.time() 120 | while len(transports) and time.time()-pollstart<60: 121 | res= poll.poll(0.5) 122 | for row in res: 123 | stat= copy.deepcopy(error_status) 124 | stat["status"]["graph"]= transports[row[0]].graphname 125 | 126 | if row[1]==1: 127 | for cmd in range(2): # we stuffed 2 commands in there, so we have to read 2 replies 128 | try: 129 | line= transports[row[0]].receive() # receive the first status reply 130 | if not line or not line.startswith("OK.") or not line.strip().endswith(':'): 131 | # bad status 132 | for v in stat["status"]["content"]: stat["status"]["errormsg"][v]= "INVALID RESPONSE '%s'" % str(line).strip() 133 | if not erricon_set: 134 | yield { "favicon": "/cgstat/static/erricon.png" } 135 | erricon_set= True 136 | else: 137 | # status ok, read data set 138 | if cmd==0: # first cmd -- 'stats q' 139 | for l in transports[row[0]].make_source(): 140 | if l[0]=='ArcCount': 141 | stat["status"]["content"]["arccount"]= l[1] 142 | elif l[0]=='ProcVirt': 143 | stat["status"]["content"]["virt"]= l[1] 144 | elif l[0]=='ProcRSS': 145 | stat["status"]["content"]["rss"]= l[1] 146 | elif cmd==1: # second cmd -- 'list-meta' 147 | for l in transports[row[0]].make_source(): 148 | if l[0]=='last_full_import': 149 | now= datetime.datetime.utcnow() 150 | lastimport= datetime.datetime.strptime(l[1], "%Y-%m-%dT%H:%M:%S") 151 | age= now-lastimport 152 | hours, remainder= divmod(age.seconds, 3600) 153 | minutes, seconds= divmod(remainder, 60) 154 | if age.days: 155 | stat["status"]["content"]["age"]= '
%02d:%02d:%02d
' % (age.days, hours, minutes) 156 | if not erricon_set: 157 | yield { "favicon": "/cgstat/static/erricon.png" } 158 | erricon_set= True 159 | else: 160 | stat["status"]["content"]["age"]= '%02d:%02d:%02d' % (age.days, hours, minutes) 161 | except socket.timeout: 162 | for v in stat["status"]["content"]: stat["status"]["errormsg"][v]= "TIMEOUT" 163 | if not erricon_set: 164 | yield { "favicon": "/cgstat/static/erricon.png" } 165 | erricon_set= True 166 | except Exception as ex: 167 | for v in stat["status"]["content"]: stat["status"]["errormsg"][v]= str(ex) 168 | if not erricon_set: 169 | yield { "favicon": "/cgstat/static/erricon.png" } 170 | erricon_set= True 171 | 172 | yield stat 173 | poll.unregister(row[0]) 174 | transports[row[0]].close() 175 | del transports[row[0]] 176 | 177 | for t in transports: 178 | stat= error_status 179 | stat["status"]["graph"]= transports[t].graphname 180 | for v in stat["status"]["content"]: stat["status"]["errormsg"][v]= "TIMEOUT" 181 | yield stat 182 | if not erricon_set: 183 | yield { "favicon": "/cgstat/static/erricon.png" } 184 | erricon_set= True 185 | 186 | # ... when finished: 187 | for t in transports: 188 | transports[t].close() 189 | 190 | 191 | def gengraphstats2(hostmap): 192 | graphsbyhost= {} 193 | for graph in hostmap: 194 | if not hostmap[graph] in graphsbyhost: 195 | graphsbyhost[hostmap[graph]]= [graph] 196 | else: 197 | graphsbyhost[hostmap[graph]].append(graph) 198 | 199 | erricon_set= False 200 | for host in graphsbyhost: 201 | conn= client.Connection(client.ClientTransport(host)) 202 | conn.connect() 203 | for graph in graphsbyhost[host]: 204 | stat= { "status": { "graph": graph, "content": { "arccount": "ERROR", "rss": "ERROR", "virt": "ERROR", "age": "ERROR" }, "errormsg": {} } } 205 | conn.use_graph(str(graph)) 206 | stats= conn.capture_stats("q") 207 | for row in stats: 208 | if row[0]=='ArcCount': 209 | stat["status"]["content"]["arccount"]= row[1] 210 | elif row[0]=='ProcVirt': 211 | stat["status"]["content"]["virt"]= row[1] 212 | elif row[0]=='ProcRSS': 213 | stat["status"]["content"]["rss"]= row[1] 214 | meta= conn.capture_list_meta() 215 | for row in meta: 216 | if row[0]=='last_full_import': 217 | now= datetime.datetime.utcnow() 218 | lastimport= datetime.datetime.strptime(row[1], "%Y-%m-%dT%H:%M:%S") 219 | age= now-lastimport 220 | hours, remainder= divmod(age.seconds, 3600) 221 | minutes, seconds= divmod(remainder, 60) 222 | if age.days: 223 | stat["status"]["content"]["age"]= '
%02d:%02d:%02d
' % (age.days, hours, minutes) 224 | if not erricon_set: 225 | yield { "favicon": "/cgstat/static/erricon.png" } 226 | erricon_set= True 227 | else: 228 | stat["status"]["content"]["age"]= '%02d:%02d:%02d' % (age.days, hours, minutes) 229 | yield stat 230 | conn.close() 231 | 232 | 233 | from multiprocessing.dummy import Pool as ThreadPool 234 | from multiprocessing import Queue 235 | import threading 236 | def gengraphstats3(hostmap): 237 | jobq= Queue() 238 | for graph in hostmap: 239 | jobq.put( (graph, hostmap[graph]) ) 240 | 241 | resultq= Queue() 242 | 243 | def processjobs(): 244 | erricon_set= False 245 | connections= { } 246 | while not jobq.empty(): 247 | job= jobq.get() 248 | 249 | graph= job[0] 250 | host= job[1] 251 | 252 | if not host in connections: 253 | connections[host]= client.Connection(client.ClientTransport(host)) 254 | connections[host].connect() 255 | 256 | connections[host].use_graph(str(graph)) 257 | 258 | stat= { "status": { "graph": graph, "content": { "arccount": "ERROR", "rss": "ERROR", "virt": "ERROR", "age": "ERROR" }, "errormsg": {} } } 259 | stats= connections[host].capture_stats("q") 260 | for row in stats: 261 | if row[0]=='ArcCount': 262 | stat["status"]["content"]["arccount"]= row[1] 263 | elif row[0]=='ProcVirt': 264 | stat["status"]["content"]["virt"]= row[1] 265 | elif row[0]=='ProcRSS': 266 | stat["status"]["content"]["rss"]= row[1] 267 | meta= connections[host].capture_list_meta() 268 | for row in meta: 269 | if row[0]=='last_full_import': 270 | now= datetime.datetime.utcnow() 271 | lastimport= datetime.datetime.strptime(row[1], "%Y-%m-%dT%H:%M:%S") 272 | age= now-lastimport 273 | hours, remainder= divmod(age.seconds, 3600) 274 | minutes, seconds= divmod(remainder, 60) 275 | if age.days: 276 | stat["status"]["content"]["age"]= '
%02d:%02d:%02d
' % (age.days, hours, minutes) 277 | if not erricon_set: 278 | resultq.put( { "favicon": "/cgstat/static/erricon.png" } ) 279 | erricon_set= True 280 | else: 281 | stat["status"]["content"]["age"]= '%02d:%02d:%02d' % (age.days, hours, minutes) 282 | 283 | resultq.put(stat) 284 | 285 | threads= [] 286 | for i in range(10): 287 | t= threading.Thread(target= processjobs) 288 | t.start() 289 | threads.append(t) 290 | 291 | def workers_alive(): 292 | for t in threads: 293 | if t.is_alive(): return True 294 | return False 295 | 296 | while (not resultq.empty()) or workers_alive(): 297 | yield resultq.get() 298 | 299 | def mkgraphstats_stuffcmds(hostmap): 300 | graphsbyhost= {} 301 | for graph in hostmap: 302 | if not hostmap[graph] in graphsbyhost: 303 | graphsbyhost[hostmap[graph]]= [graph] 304 | else: 305 | graphsbyhost[hostmap[graph]].append(graph) 306 | 307 | graphstats= [] 308 | 309 | erricon_set= False 310 | for host in graphsbyhost: 311 | sock= socket.socket(socket.AF_INET, socket.SOCK_STREAM) 312 | sock.connect((host, 6666)) 313 | sock.settimeout(30) 314 | 315 | hin= sock.makefile("r") 316 | hout= sock.makefile("w") 317 | 318 | # returns tuple: (status (bool), statusline, dataset or None) 319 | def readreply(): 320 | # get status line 321 | reply= hin.readline().strip() 322 | 323 | # error or failure occured 324 | if not (reply.startswith("OK") or reply.startswith("VALUE")): 325 | return (False, reply, None) 326 | 327 | # no error, no dataset 328 | if not reply.endswith(':'): 329 | return (True, reply, None) 330 | 331 | # no error, reply with data set 332 | dataset= [] 333 | while True: 334 | line= hin.readline().strip() 335 | if line=='': break 336 | dataset.append( line.split(',') ) 337 | return (True, reply, dataset) 338 | 339 | 340 | for graph in graphsbyhost[host]: 341 | hout.write("use-graph %s\n" % graph) 342 | hout.write("stats q\n"); 343 | hout.write("list-meta\n"); 344 | hout.flush() 345 | 346 | for graph in graphsbyhost[host]: 347 | ret= { "status": { "graph": graph, "content": { "arccount": "ERROR", "rss": "ERROR", "virt": "ERROR", "age": "ERROR" }, "errormsg": {} } } 348 | # xxx todo... could shorten this: 349 | #status= { "graph": graph, "host": host, "arccount": "ERROR", "rss": "ERROR", "virt": "ERROR", "age": "ERROR", "errormsg": {} } 350 | 351 | # need to read all replies first 352 | reply_usegraph= readreply() 353 | reply_stats= readreply() 354 | reply_meta= readreply() 355 | 356 | # check status 357 | for reply in (reply_usegraph, reply_stats, reply_meta): 358 | if not reply[0]: 359 | ret["status"]["errormsg"]= reply[1] 360 | graphstats.append(ret) 361 | continue 362 | 363 | # get stat values 364 | for retkey,key in ( ("arccount", "ArcCount"), ("rss", "ProcRSS"), ("virt", "ProcVirt") ): 365 | if not reply_stats[2]: 366 | ret["status"]["errormsg"]= reply_stats[1] 367 | graphstats.append(ret) 368 | continue 369 | d= dict(reply_stats[2]) 370 | if key in d: 371 | ret["status"]["content"][retkey]= d[key] 372 | else: 373 | ret["status"]["errormsg"]= reply_stats[1] 374 | graphstats.append(ret) 375 | continue 376 | 377 | # get age 378 | if (not reply_meta[0]) or (not reply_meta[2]) or (not "last_full_import" in dict(reply_meta[2])): 379 | ret["status"]["errormsg"]= reply_meta[1] 380 | graphstats.append(ret) 381 | continue 382 | 383 | lastimport_str= dict(reply_meta[2])["last_full_import"] 384 | now= datetime.datetime.utcnow() 385 | lastimport= datetime.datetime.strptime(lastimport_str, "%Y-%m-%dT%H:%M:%S") 386 | age= now-lastimport 387 | hours, remainder= divmod(age.seconds, 3600) 388 | minutes, seconds= divmod(remainder, 60) 389 | if age.days: 390 | ret["status"]["content"]["age"]= '
%02d:%02d:%02d
' % (age.days, hours, minutes) 391 | if not erricon_set: 392 | graphstats.append( { "favicon": "/cgstat/static/erricon.png" } ) # yield { "favicon": "/cgstat/static/erricon.png" } 393 | erricon_set= True 394 | else: 395 | ret["status"]["content"]["age"]= '%02d:%02d:%02d' % (age.days, hours, minutes) 396 | 397 | graphstats.append(ret) 398 | 399 | hin.close() 400 | hout.close() 401 | sock.close() 402 | 403 | with open("/tmp/fuckfuckfuck", "w") as f: 404 | f.write(str(graphstats)) 405 | return graphstats 406 | 407 | 408 | # glue function for 'streaming' a template which results in chunked transfer encoding 409 | def stream_template(template_name, **context): 410 | app.update_template_context(context) 411 | t = app.jinja_env.get_template(template_name) 412 | rv = t.stream(context) 413 | rv.enable_buffering(25) 414 | return rv 415 | 416 | @app.route('/cgstat') 417 | @app.route('/') 418 | def cgstat(): 419 | hostmapUri= "http://%s/hostmap/graphs.json" % ('localhost' if myhostname=='C086' else 'sylvester') 420 | hostmap= requests.get(hostmapUri).json() 421 | app.jinja_env.trim_blocks= True 422 | app.jinja_env.lstrip_blocks= True 423 | #~ response= flask.Response(stream_template('template.html', title="CatGraph Status", graphs=gengraphinfo(hostmap), updates=gengraphstats(hostmap), scripts=[])) 424 | response= flask.Response( flask.render_template('template.html', title="CatGraph Status", graphs=gengraphinfo(hostmap), updates=mkgraphstats_stuffcmds(hostmap), scripts=[]) ) 425 | response.headers.add("Content-Encoding", "identity") 426 | return response 427 | 428 | 429 | if __name__ == '__main__': 430 | import cgitb 431 | cgitb.enable() 432 | app.config['DEBUG']= True 433 | #~ app.config['PROPAGATE_EXCEPTIONS']= None 434 | app.debug= True 435 | app.use_debugger= True 436 | WSGIServer(app).run() 437 | #~ app.run(debug=app.debug, use_debugger=app.debug) 438 | -------------------------------------------------------------------------------- /GPL: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper 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 appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------