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add vendoring

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Aine
2022-11-16 12:08:51 +02:00
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vendor/gitlab.com/etke.cc/go/mxidwc/.gitlab-ci.yml generated vendored Normal file
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lint:
image: registry.gitlab.com/etke.cc/base
script:
- golangci-lint run ./...
unit:
image: registry.gitlab.com/etke.cc/base
script:
- go test -coverprofile=cover.out ./...
- go tool cover -func=cover.out
- rm -f cover.out

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vendor/gitlab.com/etke.cc/go/mxidwc/LICENSE generated vendored Normal file
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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
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ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
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3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
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You may place library facilities that are a work based on the
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is a work based on the Library, and explaining where to find the
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vendor/gitlab.com/etke.cc/go/mxidwc/README.md generated vendored Normal file
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# mxidwc
**M**atri**xID** **W**ild**c**ard parser
See godoc for info

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vendor/gitlab.com/etke.cc/go/mxidwc/parser.go generated vendored Normal file
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package mxidwc
import (
"fmt"
"regexp"
"strings"
)
// Match tells if the given user id is allowed according to the given list of regexes
func Match(userID string, allowed []*regexp.Regexp) bool {
for _, regex := range allowed {
if regex.MatchString(userID) {
return true
}
}
return false
}
// ParsePatterns converts a list of wildcard patterns to a list of regular expressions
// See ParsePattern for details
func ParsePatterns(patterns []string) ([]*regexp.Regexp, error) {
regexes := make([]*regexp.Regexp, 0, len(patterns))
for _, pattern := range patterns {
regex, err := ParsePattern(pattern)
if err != nil {
return nil, fmt.Errorf("failed to parse pattern `%s`: %s", pattern, err)
}
regexes = append(regexes, regex)
}
return regexes, nil
}
// ParsePattern parses a user wildcard pattern and returns a regular expression which corresponds to it
//
// Example conversion: `@bot.*.something:*.example.com` -> `^bot\.([^:@]*)\.something:([^:@]*)\.example.com$`
// Example of recognized wildcard patterns: `@someone:example.com`, `@*:example.com`, `@bot.*:example.com`, `@someone:*`, `@someone:*.example.com`
//
// The `*` wildcard character is normally interpretted as "a number of literal characters or an empty string".
// Our implementation below matches this (yielding `([^:@])*`), which could provide a slightly suboptimal regex in these cases:
// - `@*:example.com` -> `^@([^:@])*:example\.com$`, although `^@([^:@])+:example\.com$` would be preferable
// - `@someone:*` -> `@someone:([^:@])*$`, although `@someone:([^:@])+$` would be preferable
// When it's a bare wildcard (`*`, instead of `*.example.com`) we likely prefer to yield a regex that matches **at least one character**.
// This probably doesn't matter because mxids that we'll match against are all valid and fully complete.
func ParsePattern(pattern string) (*regexp.Regexp, error) {
if !strings.HasPrefix(pattern, "@") {
return nil, fmt.Errorf("patterns need to be fully-qualified, starting with a @")
}
pattern = pattern[1:]
if strings.Contains(pattern, "@") {
return nil, fmt.Errorf("patterns cannot contain more than one @")
}
parts := strings.Split(pattern, ":")
if len(parts) != 2 {
return nil, fmt.Errorf("expected exactly 2 parts in the pattern, separated by `:`")
}
localpart := parts[0]
localpartPattern, err := getPattern(localpart)
if err != nil {
return nil, fmt.Errorf("failed to convert localpart `%s` to regex: %s", localpart, err)
}
domain := parts[1]
domainPattern, err := getPattern(domain)
if err != nil {
return nil, fmt.Errorf("failed to convert domain `%s` to regex: %s", domain, err)
}
pattern = fmt.Sprintf("^@%s:%s$", localpartPattern, domainPattern)
regex, err := regexp.Compile(pattern)
if err != nil {
return nil, fmt.Errorf("failed to compile regex `%s`: %s", pattern, err)
}
return regex, nil
}
func getPattern(part string) (string, error) {
if part == "" {
return "", fmt.Errorf("rejecting empty part")
}
var pattern strings.Builder
for _, runeItem := range part {
if runeItem == '*' {
// We match everything except for `:` and `@`, because that would be an invalid MXID anyway.
//
// If the whole part is `*` (only) instead of merely containing `*` within it,
// we may also consider replacing it with `([^:@]+)` (+, instead of *).
// See ParsePattern for notes about this.
pattern.WriteString("([^:@]*)")
continue
}
pattern.WriteString(regexp.QuoteMeta(string(runeItem)))
}
return pattern.String(), nil
}