e8e7b83297
- Require at least 80% of number of servers now to pass - Each provider is in its own package with a common structure - Unzip package with unzipper interface - Openvpn package with extraction and download functions
55 lines
1.3 KiB
Go
55 lines
1.3 KiB
Go
package privatevpn
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import (
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"errors"
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"fmt"
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"regexp"
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"strings"
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)
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var (
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trailingNumber = regexp.MustCompile(` [0-9]+$`)
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)
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var (
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errBadPrefix = errors.New("bad prefix in file name")
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errBadSuffix = errors.New("bad suffix in file name")
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errNotEnoughParts = errors.New("not enough parts in file name")
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)
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func parseFilename(fileName string) (
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countryCode, city string, err error,
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) {
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fileName = strings.ReplaceAll(fileName, " ", "") // remove spaces
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const prefix = "PrivateVPN-"
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if !strings.HasPrefix(fileName, prefix) {
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return "", "", fmt.Errorf("%w: %s", errBadPrefix, fileName)
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}
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s := strings.TrimPrefix(fileName, prefix)
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const tcpSuffix = "-TUN-443.ovpn"
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const udpSuffix = "-TUN-1194.ovpn"
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switch {
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case strings.HasSuffix(fileName, tcpSuffix):
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s = strings.TrimSuffix(s, tcpSuffix)
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case strings.HasSuffix(fileName, udpSuffix):
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s = strings.TrimSuffix(s, udpSuffix)
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default:
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return "", "", fmt.Errorf("%w: %s", errBadSuffix, fileName)
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}
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s = trailingNumber.ReplaceAllString(s, "")
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parts := strings.Split(s, "-")
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const minParts = 2
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if len(parts) < minParts {
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return "", "", fmt.Errorf("%w: %s",
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errNotEnoughParts, fileName)
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}
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countryCode, city = parts[0], parts[1]
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countryCode = strings.ToLower(countryCode)
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return countryCode, city, nil
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}
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