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1 |
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2 "This software program is licensed subject to the GNU General Public License |
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3 (GPL). Version 2, June 1991, available at |
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4 <http://www.fsf.org/copyleft/gpl.html>" |
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5 |
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6 GNU General Public License |
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7 |
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8 Version 2, June 1991 |
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9 |
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10 Copyright (C) 1989, 1991 Free Software Foundation, Inc. |
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11 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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12 |
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13 Everyone is permitted to copy and distribute verbatim copies of this license |
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14 document, but changing it is not allowed. |
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15 |
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16 Preamble |
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17 |
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18 The licenses for most software are designed to take away your freedom to |
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19 share and change it. By contrast, the GNU General Public License is intended |
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20 to guarantee your freedom to share and change free software--to make sure |
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21 the software is free for all its users. This General Public License applies |
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22 to most of the Free Software Foundation's software and to any other program |
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23 whose authors commit to using it. (Some other Free Software Foundation |
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24 software is covered by the GNU Library General Public License instead.) You |
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25 can apply it to your programs, too. |
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26 |
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27 When we speak of free software, we are referring to freedom, not price. Our |
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28 General Public Licenses are designed to make sure that you have the freedom |
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29 to distribute copies of free software (and charge for this service if you |
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30 wish), that you receive source code or can get it if you want it, that you |
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31 can change the software or use pieces of it in new free programs; and that |
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32 you know you can do these things. |
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33 |
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34 To protect your rights, we need to make restrictions that forbid anyone to |
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35 deny you these rights or to ask you to surrender the rights. These |
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36 restrictions translate to certain responsibilities for you if you distribute |
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37 copies of the software, or if you modify it. |
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38 |
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39 For example, if you distribute copies of such a program, whether gratis or |
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40 for a fee, you must give the recipients all the rights that you have. You |
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41 must make sure that they, too, receive or can get the source code. And you |
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42 must show them these terms so they know their rights. |
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43 |
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44 We protect your rights with two steps: (1) copyright the software, and (2) |
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45 offer you this license which gives you legal permission to copy, distribute |
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46 and/or modify the software. |
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47 |
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48 Also, for each author's protection and ours, we want to make certain that |
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49 everyone understands that there is no warranty for this free software. If |
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50 the software is modified by someone else and passed on, we want its |
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51 recipients to know that what they have is not the original, so that any |
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52 problems introduced by others will not reflect on the original authors' |
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53 reputations. |
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54 |
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55 Finally, any free program is threatened constantly by software patents. We |
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56 wish to avoid the danger that redistributors of a free program will |
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57 individually obtain patent licenses, in effect making the program |
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58 proprietary. To prevent this, we have made it clear that any patent must be |
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59 licensed for everyone's free use or not licensed at all. |
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60 |
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61 The precise terms and conditions for copying, distribution and modification |
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62 follow. |
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63 |
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64 TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION |
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65 |
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66 0. This License applies to any program or other work which contains a notice |
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67 placed by the copyright holder saying it may be distributed under the |
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68 terms of this General Public License. The "Program", below, refers to any |
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69 such program or work, and a "work based on the Program" means either the |
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70 Program or any derivative work under copyright law: that is to say, a |
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71 work containing the Program or a portion of it, either verbatim or with |
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72 modifications and/or translated into another language. (Hereinafter, |
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73 translation is included without limitation in the term "modification".) |
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74 Each licensee is addressed as "you". |
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75 |
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76 Activities other than copying, distribution and modification are not |
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77 covered by this License; they are outside its scope. The act of running |
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78 the Program is not restricted, and the output from the Program is covered |
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79 only if its contents constitute a work based on the Program (independent |
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80 of having been made by running the Program). Whether that is true depends |
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81 on what the Program does. |
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82 |
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83 1. You may copy and distribute verbatim copies of the Program's source code |
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84 as you receive it, in any medium, provided that you conspicuously and |
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85 appropriately publish on each copy an appropriate copyright notice and |
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86 disclaimer of warranty; keep intact all the notices that refer to this |
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87 License and to the absence of any warranty; and give any other recipients |
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88 of the Program a copy of this License along with the Program. |
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89 |
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90 You may charge a fee for the physical act of transferring a copy, and you |
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91 may at your option offer warranty protection in exchange for a fee. |
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92 |
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93 2. You may modify your copy or copies of the Program or any portion of it, |
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94 thus forming a work based on the Program, and copy and distribute such |
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95 modifications or work under the terms of Section 1 above, provided that |
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96 you also meet all of these conditions: |
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97 |
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98 * a) You must cause the modified files to carry prominent notices stating |
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99 that you changed the files and the date of any change. |
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100 |
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101 * b) You must cause any work that you distribute or publish, that in |
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102 whole or in part contains or is derived from the Program or any part |
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103 thereof, to be licensed as a whole at no charge to all third parties |
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104 under the terms of this License. |
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105 |
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106 * c) If the modified program normally reads commands interactively when |
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107 run, you must cause it, when started running for such interactive |
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108 use in the most ordinary way, to print or display an announcement |
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109 including an appropriate copyright notice and a notice that there is |
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110 no warranty (or else, saying that you provide a warranty) and that |
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111 users may redistribute the program under these conditions, and |
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112 telling the user how to view a copy of this License. (Exception: if |
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113 the Program itself is interactive but does not normally print such |
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114 an announcement, your work based on the Program is not required to |
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115 print an announcement.) |
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116 |
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117 These requirements apply to the modified work as a whole. If identifiable |
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118 sections of that work are not derived from the Program, and can be |
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119 reasonably considered independent and separate works in themselves, then |
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120 this License, and its terms, do not apply to those sections when you |
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121 distribute them as separate works. But when you distribute the same |
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122 sections as part of a whole which is a work based on the Program, the |
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123 distribution of the whole must be on the terms of this License, whose |
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124 permissions for other licensees extend to the entire whole, and thus to |
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125 each and every part regardless of who wrote it. |
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126 |
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127 Thus, it is not the intent of this section to claim rights or contest |
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128 your rights to work written entirely by you; rather, the intent is to |
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129 exercise the right to control the distribution of derivative or |
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130 collective works based on the Program. |
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131 |
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132 In addition, mere aggregation of another work not based on the Program |
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133 with the Program (or with a work based on the Program) on a volume of a |
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134 storage or distribution medium does not bring the other work under the |
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135 scope of this License. |
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136 |
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137 3. You may copy and distribute the Program (or a work based on it, under |
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138 Section 2) in object code or executable form under the terms of Sections |
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139 1 and 2 above provided that you also do one of the following: |
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140 |
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141 * a) Accompany it with the complete corresponding machine-readable source |
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142 code, which must be distributed under the terms of Sections 1 and 2 |
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143 above on a medium customarily used for software interchange; or, |
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144 |
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145 * b) Accompany it with a written offer, valid for at least three years, |
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146 to give any third party, for a charge no more than your cost of |
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147 physically performing source distribution, a complete machine- |
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148 readable copy of the corresponding source code, to be distributed |
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149 under the terms of Sections 1 and 2 above on a medium customarily |
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150 used for software interchange; or, |
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151 |
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152 * c) Accompany it with the information you received as to the offer to |
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153 distribute corresponding source code. (This alternative is allowed |
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154 only for noncommercial distribution and only if you received the |
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155 program in object code or executable form with such an offer, in |
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156 accord with Subsection b above.) |
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157 |
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158 The source code for a work means the preferred form of the work for |
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159 making modifications to it. For an executable work, complete source code |
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160 means all the source code for all modules it contains, plus any |
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161 associated interface definition files, plus the scripts used to control |
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162 compilation and installation of the executable. However, as a special |
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163 exception, the source code distributed need not include anything that is |
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164 normally distributed (in either source or binary form) with the major |
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165 components (compiler, kernel, and so on) of the operating system on which |
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166 the executable runs, unless that component itself accompanies the |
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167 executable. |
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168 |
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169 If distribution of executable or object code is made by offering access |
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170 to copy from a designated place, then offering equivalent access to copy |
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171 the source code from the same place counts as distribution of the source |
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172 code, even though third parties are not compelled to copy the source |
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173 along with the object code. |
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174 |
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175 4. You may not copy, modify, sublicense, or distribute the Program except as |
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176 expressly provided under this License. Any attempt otherwise to copy, |
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177 modify, sublicense or distribute the Program is void, and will |
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178 automatically terminate your rights under this License. However, parties |
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179 who have received copies, or rights, from you under this License will not |
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180 have their licenses terminated so long as such parties remain in full |
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181 compliance. |
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182 |
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183 5. You are not required to accept this License, since you have not signed |
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184 it. However, nothing else grants you permission to modify or distribute |
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185 the Program or its derivative works. These actions are prohibited by law |
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186 if you do not accept this License. Therefore, by modifying or |
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187 distributing the Program (or any work based on the Program), you |
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188 indicate your acceptance of this License to do so, and all its terms and |
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189 conditions for copying, distributing or modifying the Program or works |
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190 based on it. |
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191 |
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192 6. Each time you redistribute the Program (or any work based on the |
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193 Program), the recipient automatically receives a license from the |
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194 original licensor to copy, distribute or modify the Program subject to |
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195 these terms and conditions. You may not impose any further restrictions |
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196 on the recipients' exercise of the rights granted herein. You are not |
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197 responsible for enforcing compliance by third parties to this License. |
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198 |
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199 7. If, as a consequence of a court judgment or allegation of patent |
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200 infringement or for any other reason (not limited to patent issues), |
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201 conditions are imposed on you (whether by court order, agreement or |
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202 otherwise) that contradict the conditions of this License, they do not |
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203 excuse you from the conditions of this License. If you cannot distribute |
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204 so as to satisfy simultaneously your obligations under this License and |
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205 any other pertinent obligations, then as a consequence you may not |
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206 distribute the Program at all. For example, if a patent license would |
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207 not permit royalty-free redistribution of the Program by all those who |
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208 receive copies directly or indirectly through you, then the only way you |
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209 could satisfy both it and this License would be to refrain entirely from |
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210 distribution of the Program. |
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211 |
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212 If any portion of this section is held invalid or unenforceable under any |
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213 particular circumstance, the balance of the section is intended to apply |
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214 and the section as a whole is intended to apply in other circumstances. |
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215 |
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216 It is not the purpose of this section to induce you to infringe any |
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217 patents or other property right claims or to contest validity of any |
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218 such claims; this section has the sole purpose of protecting the |
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219 integrity of the free software distribution system, which is implemented |
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220 by public license practices. Many people have made generous contributions |
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221 to the wide range of software distributed through that system in |
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222 reliance on consistent application of that system; it is up to the |
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223 author/donor to decide if he or she is willing to distribute software |
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224 through any other system and a licensee cannot impose that choice. |
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225 |
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226 This section is intended to make thoroughly clear what is believed to be |
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227 a consequence of the rest of this License. |
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228 |
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229 8. If the distribution and/or use of the Program is restricted in certain |
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230 countries either by patents or by copyrighted interfaces, the original |
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231 copyright holder who places the Program under this License may add an |
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232 explicit geographical distribution limitation excluding those countries, |
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233 so that distribution is permitted only in or among countries not thus |
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234 excluded. In such case, this License incorporates the limitation as if |
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235 written in the body of this License. |
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236 |
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237 9. The Free Software Foundation may publish revised and/or new versions of |
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238 the General Public License from time to time. Such new versions will be |
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239 similar in spirit to the present version, but may differ in detail to |
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240 address new problems or concerns. |
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241 |
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242 Each version is given a distinguishing version number. If the Program |
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243 specifies a version number of this License which applies to it and "any |
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244 later version", you have the option of following the terms and |
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245 conditions either of that version or of any later version published by |
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246 the Free Software Foundation. If the Program does not specify a version |
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247 number of this License, you may choose any version ever published by the |
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248 Free Software Foundation. |
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249 |
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250 10. If you wish to incorporate parts of the Program into other free programs |
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251 whose distribution conditions are different, write to the author to ask |
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252 for permission. For software which is copyrighted by the Free Software |
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253 Foundation, write to the Free Software Foundation; we sometimes make |
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254 exceptions for this. Our decision will be guided by the two goals of |
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255 preserving the free status of all derivatives of our free software and |
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256 of promoting the sharing and reuse of software generally. |
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257 |
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258 NO WARRANTY |
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259 |
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260 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY |
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261 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN |
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262 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES |
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263 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER |
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264 EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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265 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE |
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266 ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH |
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267 YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL |
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268 NECESSARY SERVICING, REPAIR OR CORRECTION. |
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269 |
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270 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
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271 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR |
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272 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR |
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273 DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL |
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274 DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM |
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275 (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED |
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276 INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF |
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277 THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR |
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278 OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
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279 |
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280 END OF TERMS AND CONDITIONS |
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281 |
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282 How to Apply These Terms to Your New Programs |
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283 |
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284 If you develop a new program, and you want it to be of the greatest |
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285 possible use to the public, the best way to achieve this is to make it free |
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286 software which everyone can redistribute and change under these terms. |
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287 |
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288 To do so, attach the following notices to the program. It is safest to |
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289 attach them to the start of each source file to most effectively convey the |
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290 exclusion of warranty; and each file should have at least the "copyright" |
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291 line and a pointer to where the full notice is found. |
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292 |
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293 one line to give the program's name and an idea of what it does. |
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294 Copyright (C) yyyy name of author |
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295 |
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296 This program is free software; you can redistribute it and/or modify it |
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297 under the terms of the GNU General Public License as published by the Free |
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298 Software Foundation; either version 2 of the License, or (at your option) |
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299 any later version. |
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300 |
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301 This program is distributed in the hope that it will be useful, but WITHOUT |
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302 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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303 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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304 more details. |
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305 |
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306 You should have received a copy of the GNU General Public License along with |
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307 this program; if not, write to the Free Software Foundation, Inc., 59 |
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308 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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309 |
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310 Also add information on how to contact you by electronic and paper mail. |
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311 |
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312 If the program is interactive, make it output a short notice like this when |
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313 it starts in an interactive mode: |
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314 |
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315 Gnomovision version 69, Copyright (C) year name of author Gnomovision comes |
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316 with ABSOLUTELY NO WARRANTY; for details type 'show w'. This is free |
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317 software, and you are welcome to redistribute it under certain conditions; |
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318 type 'show c' for details. |
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319 |
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320 The hypothetical commands 'show w' and 'show c' should show the appropriate |
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321 parts of the General Public License. Of course, the commands you use may be |
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322 called something other than 'show w' and 'show c'; they could even be |
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323 mouse-clicks or menu items--whatever suits your program. |
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324 |
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325 You should also get your employer (if you work as a programmer) or your |
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326 school, if any, to sign a "copyright disclaimer" for the program, if |
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327 necessary. Here is a sample; alter the names: |
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328 |
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329 Yoyodyne, Inc., hereby disclaims all copyright interest in the program |
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330 'Gnomovision' (which makes passes at compilers) written by James Hacker. |
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331 |
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332 signature of Ty Coon, 1 April 1989 |
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333 Ty Coon, President of Vice |
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334 |
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335 This General Public License does not permit incorporating your program into |
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336 proprietary programs. If your program is a subroutine library, you may |
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337 consider it more useful to permit linking proprietary applications with the |
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338 library. If this is what you want to do, use the GNU Library General Public |
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339 License instead of this License. |