83 lines
3.4 KiB
Go
83 lines
3.4 KiB
Go
package agplwarning
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import (
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"bufio"
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"fmt"
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"os"
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"os/user"
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"strings"
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)
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var pages = [...]string{
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`This is a friendly reminder that the GNU AGPL adds an additional clause to
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the standard GNU GPL, which is that you MUST distribute the source code for the
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software once you publish it on the web.
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This is not to be considered professional legal advice. For further
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information, refer to the LICENSE file which contains the whole license, or ask
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your lawyer. If you did not receive a copy of the LICENSE file with this
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software, you can refer to the online version:
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https://www.gnu.org/licenses/agpl-3.0.html`,
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`In order to comply with the license, should you have made any modification
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to the original copy of the software, which should contain a link to the
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source code, however minor it is, you are under the legal obligation to provide
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the source code once you publish the software on the Web.
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Another obligation is that of stating your changes. This is usually done by
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cloning the original git repository of the project and stating your changes
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through the creation of commits, which allow us to determine when a specific
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change was done.`,
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`Furthermore, all the original clauses of the GNU General Public License
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are kept intact, which means you have the obligation to
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* Keep the AGPL License, without possibility of sublicensing the software
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or making it available under any other more liberal license.
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* Keep the copyright notice of the original authors
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Failure to do so will result in a request to follow the License, and
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repeated violation of the license could result in a legal fight.`,
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`For more information on the FSF and software freedom, refer to:
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* What is free software? https://www.gnu.org/philosophy/free-sw.html
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* Free Software Is Even More Important Now
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https://www.gnu.org/philosophy/free-software-even-more-important.html
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* The GNU operating system https://www.gnu.org
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* The Free Software Foundation https://www.fsf.org
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Thank you for reading this and following our license terms.`,
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}
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// Warn shows a warning about the GNU Affero General Public License the first
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// time the software is run. The state is saved in
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// ~/.config/[namespace]_license_agreed.
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func Warn(namespace, projectName string) error {
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usr, err := user.Current()
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if err != nil {
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return fmt.Errorf("initialization of agplwarning failed: %v", err)
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}
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if err := os.MkdirAll(usr.HomeDir+"/.config", 0755); err != nil {
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return fmt.Errorf("can't create config dir: %v", err)
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}
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agreedFilename := usr.HomeDir + "/.config/" + namespace + "_license_agreed"
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if _, err := os.Stat(agreedFilename); !os.IsNotExist(err) {
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return err
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}
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reader := bufio.NewReader(os.Stdin)
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// file does not exist. Show warning.
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fmt.Printf(" %s, and most/all software related to %s,\n"+
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"is licensed under the GNU Affero General Public License.\n\n", projectName, namespace)
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for _, page := range pages {
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fmt.Println(" " + page)
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fmt.Println("\nPress Enter to continue")
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_, err := reader.ReadString('\n')
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if err != nil {
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return err
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}
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}
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fmt.Println("Please write 'I agree' to accept the terms of the license.")
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res, err := reader.ReadString('\n')
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if err != nil || !strings.Contains(strings.ToLower(res), "i agree") {
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fmt.Println("License not agreed. Quitting.")
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os.Exit(1)
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}
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f, err := os.Create(agreedFilename)
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if err != nil {
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return fmt.Errorf("couldn't save read status: %v", err)
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}
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return f.Close()
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}
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