3654e68f63
These files had too little whitespace in some cases and too much whitespace in others. Tidy them with goimports to ensure that developers can build without having modified files.
194 lines
4.5 KiB
Go
194 lines
4.5 KiB
Go
package config
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"sync"
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"github.com/git-lfs/git-lfs/git"
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)
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type GitFetcher struct {
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vmu sync.RWMutex
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vals map[string][]string
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}
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func readGitConfig(configs ...*git.ConfigurationSource) (gf *GitFetcher, extensions map[string]Extension, uniqRemotes map[string]bool) {
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vals := make(map[string][]string)
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ignored := make([]string, 0)
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extensions = make(map[string]Extension)
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uniqRemotes = make(map[string]bool)
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for _, gc := range configs {
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uniqKeys := make(map[string]string)
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for _, line := range gc.Lines {
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pieces := strings.SplitN(line, "=", 2)
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if len(pieces) < 2 {
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continue
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}
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allowed := !gc.OnlySafeKeys
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// We don't need to change the case of the key here,
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// since Git will already have canonicalized it for us.
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key, val := pieces[0], pieces[1]
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if origKey, ok := uniqKeys[key]; ok {
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if ShowConfigWarnings && len(vals[key]) > 0 && vals[key][len(vals[key])-1] != val && strings.HasPrefix(key, gitConfigWarningPrefix) {
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fmt.Fprintf(os.Stderr, "WARNING: These git config values clash:\n")
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fmt.Fprintf(os.Stderr, " git config %q = %q\n", origKey, vals[key])
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fmt.Fprintf(os.Stderr, " git config %q = %q\n", pieces[0], val)
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}
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} else {
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uniqKeys[key] = pieces[0]
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}
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parts := strings.Split(key, ".")
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if len(parts) == 4 && parts[0] == "lfs" && parts[1] == "extension" {
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// prop: lfs.extension.<name>.<prop>
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name := parts[2]
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prop := parts[3]
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ext := extensions[name]
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ext.Name = name
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switch prop {
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case "clean":
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if gc.OnlySafeKeys {
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ignored = append(ignored, key)
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continue
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}
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ext.Clean = val
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case "smudge":
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if gc.OnlySafeKeys {
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ignored = append(ignored, key)
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continue
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}
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ext.Smudge = val
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case "priority":
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allowed = true
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p, err := strconv.Atoi(val)
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if err == nil && p >= 0 {
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ext.Priority = p
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}
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}
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extensions[name] = ext
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} else if len(parts) > 1 && parts[0] == "remote" {
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if gc.OnlySafeKeys && (len(parts) == 3 && parts[2] != "lfsurl") {
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ignored = append(ignored, key)
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continue
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}
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allowed = true
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remote := strings.Join(parts[1:len(parts)-1], ".")
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uniqRemotes[remote] = remote == "origin"
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} else if len(parts) > 2 && parts[len(parts)-1] == "access" {
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allowed = true
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}
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if !allowed && keyIsUnsafe(key) {
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ignored = append(ignored, key)
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continue
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}
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vals[key] = append(vals[key], val)
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}
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}
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if len(ignored) > 0 {
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fmt.Fprintf(os.Stderr, "WARNING: These unsafe lfsconfig keys were ignored:\n\n")
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for _, key := range ignored {
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fmt.Fprintf(os.Stderr, " %s\n", key)
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}
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}
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gf = &GitFetcher{vals: vals}
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return
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}
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// Get implements the Fetcher interface, and returns the value associated with
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// a given key and true, signaling that the value was present. Otherwise, an
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// empty string and false will be returned, signaling that the value was
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// absent.
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//
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// Map lookup by key is case-insensitive, except for the middle part of a
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// three-part key, as per the .gitconfig specification.
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//
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// Get is safe to call across multiple goroutines.
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func (g *GitFetcher) Get(key string) (val string, ok bool) {
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all := g.GetAll(key)
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if len(all) == 0 {
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return "", false
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}
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return all[len(all)-1], true
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}
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func (g *GitFetcher) GetAll(key string) []string {
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g.vmu.RLock()
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defer g.vmu.RUnlock()
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return g.vals[g.caseFoldKey(key)]
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}
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func (g *GitFetcher) All() map[string][]string {
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newmap := make(map[string][]string)
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g.vmu.RLock()
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defer g.vmu.RUnlock()
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for key, values := range g.vals {
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for _, value := range values {
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newmap[key] = append(newmap[key], value)
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}
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}
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return newmap
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}
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func (g *GitFetcher) caseFoldKey(key string) string {
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parts := strings.Split(key, ".")
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last := len(parts) - 1
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// We check for 3 or more parts here because if the middle part is a
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// URL, it may have dots in it. We'll downcase the part before the first
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// dot and after the last dot, but preserve the piece in the middle,
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// which may be a branch name, remote, or URL, all of which are
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// case-sensitive. This is the algorithm Git uses to canonicalize its
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// keys.
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if len(parts) < 3 {
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return strings.ToLower(key)
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}
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return strings.Join([]string{
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strings.ToLower(parts[0]),
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strings.Join(parts[1:last], "."),
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strings.ToLower(parts[last]),
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}, ".")
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}
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func keyIsUnsafe(key string) bool {
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for _, safe := range safeKeys {
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if safe == key {
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return false
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}
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}
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return true
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}
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var safeKeys = []string{
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"lfs.allowincompletepush",
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"lfs.fetchexclude",
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"lfs.fetchinclude",
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"lfs.gitprotocol",
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"lfs.locksverify",
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"lfs.pushurl",
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"lfs.url",
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}
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