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authorValentin Rothberg <vrothberg@suse.com>2018-11-16 16:05:07 +0100
committerValentin Rothberg <vrothberg@suse.com>2018-11-16 16:05:07 +0100
commit780b790415f94ea41ef70bd97828ecb92a4f06d1 (patch)
tree57c9884a23aedfc95ddb05fccc456d6b791b24e9
parent43de95df34a88d2ded4b62ab0c1763a33acac07e (diff)
downloadpodman-780b790415f94ea41ef70bd97828ecb92a4f06d1.tar.gz
podman-780b790415f94ea41ef70bd97828ecb92a4f06d1.tar.bz2
podman-780b790415f94ea41ef70bd97828ecb92a4f06d1.zip
runlabel: use shlex for splitting commands
Use github.com/google/shlex for splitting commands instead of splitting at whitespaces. This way, we avoid accidentally splitting single string arguments into mutliple ones. Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
-rw-r--r--cmd/podman/shared/funcs.go8
-rw-r--r--cmd/podman/shared/funcs_test.go9
-rw-r--r--vendor.conf1
-rw-r--r--vendor/github.com/google/shlex/COPYING202
-rw-r--r--vendor/github.com/google/shlex/README2
-rw-r--r--vendor/github.com/google/shlex/shlex.go416
6 files changed, 633 insertions, 5 deletions
diff --git a/cmd/podman/shared/funcs.go b/cmd/podman/shared/funcs.go
index a92e0d547..8520c0616 100644
--- a/cmd/podman/shared/funcs.go
+++ b/cmd/podman/shared/funcs.go
@@ -5,6 +5,8 @@ import (
"os"
"path/filepath"
"strings"
+
+ "github.com/google/shlex"
)
func substituteCommand(cmd string) (string, error) {
@@ -42,7 +44,11 @@ func GenerateCommand(command, imageName, name string) ([]string, error) {
if name == "" {
name = imageName
}
- cmd := strings.Split(command, " ")
+
+ cmd, err := shlex.Split(command)
+ if err != nil {
+ return nil, err
+ }
prog, err := substituteCommand(cmd[0])
if err != nil {
diff --git a/cmd/podman/shared/funcs_test.go b/cmd/podman/shared/funcs_test.go
index 596df84e8..7506b9d9c 100644
--- a/cmd/podman/shared/funcs_test.go
+++ b/cmd/podman/shared/funcs_test.go
@@ -18,10 +18,11 @@ var (
)
func TestGenerateCommand(t *testing.T) {
- inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo install"
+ inputCommand := "docker run -it --name NAME -e NAME=NAME -e IMAGE=IMAGE IMAGE echo \"hello world\""
+ correctCommand := "/proc/self/exe run -it --name bar -e NAME=bar -e IMAGE=foo foo echo hello world"
newCommand, err := GenerateCommand(inputCommand, "foo", "bar")
assert.Nil(t, err)
+ assert.Equal(t, "hello world", newCommand[11])
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
}
@@ -108,8 +109,8 @@ func TestGenerateCommandNoSetName(t *testing.T) {
}
func TestGenerateCommandNoName(t *testing.T) {
- inputCommand := "docker run -it -e IMAGE=IMAGE IMAGE echo install"
- correctCommand := "/proc/self/exe run -it -e IMAGE=foo foo echo install"
+ inputCommand := "docker run -it -e IMAGE=IMAGE IMAGE echo install"
+ correctCommand := "/proc/self/exe run -it -e IMAGE=foo foo echo install"
newCommand, err := GenerateCommand(inputCommand, "foo", "")
assert.Nil(t, err)
assert.Equal(t, correctCommand, strings.Join(newCommand, " "))
diff --git a/vendor.conf b/vendor.conf
index a16975bf9..c8e968648 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -99,3 +99,4 @@ github.com/openshift/imagebuilder master
github.com/ulikunitz/xz v0.5.4
github.com/mailru/easyjson 03f2033d19d5860aef995fe360ac7d395cd8ce65
github.com/coreos/go-iptables 25d087f3cffd9aedc0c2b7eff25f23cbf3c20fe1
+github.com/google/shlex c34317bd91bf98fab745d77b03933cf8769299fe
diff --git a/vendor/github.com/google/shlex/COPYING b/vendor/github.com/google/shlex/COPYING
new file mode 100644
index 000000000..d64569567
--- /dev/null
+++ b/vendor/github.com/google/shlex/COPYING
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
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+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
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+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
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+ "Contribution" shall mean any work of authorship, including
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+ "Contributor" shall mean Licensor and any individual or Legal Entity
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+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
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+ 3. Grant of Patent License. Subject to the terms and conditions of
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+ the conditions stated in this License.
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+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
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+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
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+ the Work or Derivative Works thereof, You may choose to offer,
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+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
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+ END OF TERMS AND CONDITIONS
+
+ APPENDIX: How to apply the Apache License to your work.
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+ Licensed under the Apache License, Version 2.0 (the "License");
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+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
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diff --git a/vendor/github.com/google/shlex/README b/vendor/github.com/google/shlex/README
new file mode 100644
index 000000000..c86bcc066
--- /dev/null
+++ b/vendor/github.com/google/shlex/README
@@ -0,0 +1,2 @@
+go-shlex is a simple lexer for go that supports shell-style quoting,
+commenting, and escaping.
diff --git a/vendor/github.com/google/shlex/shlex.go b/vendor/github.com/google/shlex/shlex.go
new file mode 100644
index 000000000..d98308bce
--- /dev/null
+++ b/vendor/github.com/google/shlex/shlex.go
@@ -0,0 +1,416 @@
+/*
+Copyright 2012 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+/*
+Package shlex implements a simple lexer which splits input in to tokens using
+shell-style rules for quoting and commenting.
+
+The basic use case uses the default ASCII lexer to split a string into sub-strings:
+
+ shlex.Split("one \"two three\" four") -> []string{"one", "two three", "four"}
+
+To process a stream of strings:
+
+ l := NewLexer(os.Stdin)
+ for ; token, err := l.Next(); err != nil {
+ // process token
+ }
+
+To access the raw token stream (which includes tokens for comments):
+
+ t := NewTokenizer(os.Stdin)
+ for ; token, err := t.Next(); err != nil {
+ // process token
+ }
+
+*/
+package shlex
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "strings"
+)
+
+// TokenType is a top-level token classification: A word, space, comment, unknown.
+type TokenType int
+
+// runeTokenClass is the type of a UTF-8 character classification: A quote, space, escape.
+type runeTokenClass int
+
+// the internal state used by the lexer state machine
+type lexerState int
+
+// Token is a (type, value) pair representing a lexographical token.
+type Token struct {
+ tokenType TokenType
+ value string
+}
+
+// Equal reports whether tokens a, and b, are equal.
+// Two tokens are equal if both their types and values are equal. A nil token can
+// never be equal to another token.
+func (a *Token) Equal(b *Token) bool {
+ if a == nil || b == nil {
+ return false
+ }
+ if a.tokenType != b.tokenType {
+ return false
+ }
+ return a.value == b.value
+}
+
+// Named classes of UTF-8 runes
+const (
+ spaceRunes = " \t\r\n"
+ escapingQuoteRunes = `"`
+ nonEscapingQuoteRunes = "'"
+ escapeRunes = `\`
+ commentRunes = "#"
+)
+
+// Classes of rune token
+const (
+ unknownRuneClass runeTokenClass = iota
+ spaceRuneClass
+ escapingQuoteRuneClass
+ nonEscapingQuoteRuneClass
+ escapeRuneClass
+ commentRuneClass
+ eofRuneClass
+)
+
+// Classes of lexographic token
+const (
+ UnknownToken TokenType = iota
+ WordToken
+ SpaceToken
+ CommentToken
+)
+
+// Lexer state machine states
+const (
+ startState lexerState = iota // no runes have been seen
+ inWordState // processing regular runes in a word
+ escapingState // we have just consumed an escape rune; the next rune is literal
+ escapingQuotedState // we have just consumed an escape rune within a quoted string
+ quotingEscapingState // we are within a quoted string that supports escaping ("...")
+ quotingState // we are within a string that does not support escaping ('...')
+ commentState // we are within a comment (everything following an unquoted or unescaped #
+)
+
+// tokenClassifier is used for classifying rune characters.
+type tokenClassifier map[rune]runeTokenClass
+
+func (typeMap tokenClassifier) addRuneClass(runes string, tokenType runeTokenClass) {
+ for _, runeChar := range runes {
+ typeMap[runeChar] = tokenType
+ }
+}
+
+// newDefaultClassifier creates a new classifier for ASCII characters.
+func newDefaultClassifier() tokenClassifier {
+ t := tokenClassifier{}
+ t.addRuneClass(spaceRunes, spaceRuneClass)
+ t.addRuneClass(escapingQuoteRunes, escapingQuoteRuneClass)
+ t.addRuneClass(nonEscapingQuoteRunes, nonEscapingQuoteRuneClass)
+ t.addRuneClass(escapeRunes, escapeRuneClass)
+ t.addRuneClass(commentRunes, commentRuneClass)
+ return t
+}
+
+// ClassifyRune classifiees a rune
+func (t tokenClassifier) ClassifyRune(runeVal rune) runeTokenClass {
+ return t[runeVal]
+}
+
+// Lexer turns an input stream into a sequence of tokens. Whitespace and comments are skipped.
+type Lexer Tokenizer
+
+// NewLexer creates a new lexer from an input stream.
+func NewLexer(r io.Reader) *Lexer {
+
+ return (*Lexer)(NewTokenizer(r))
+}
+
+// Next returns the next word, or an error. If there are no more words,
+// the error will be io.EOF.
+func (l *Lexer) Next() (string, error) {
+ for {
+ token, err := (*Tokenizer)(l).Next()
+ if err != nil {
+ return "", err
+ }
+ switch token.tokenType {
+ case WordToken:
+ return token.value, nil
+ case CommentToken:
+ // skip comments
+ default:
+ return "", fmt.Errorf("Unknown token type: %v", token.tokenType)
+ }
+ }
+}
+
+// Tokenizer turns an input stream into a sequence of typed tokens
+type Tokenizer struct {
+ input bufio.Reader
+ classifier tokenClassifier
+}
+
+// NewTokenizer creates a new tokenizer from an input stream.
+func NewTokenizer(r io.Reader) *Tokenizer {
+ input := bufio.NewReader(r)
+ classifier := newDefaultClassifier()
+ return &Tokenizer{
+ input: *input,
+ classifier: classifier}
+}
+
+// scanStream scans the stream for the next token using the internal state machine.
+// It will panic if it encounters a rune which it does not know how to handle.
+func (t *Tokenizer) scanStream() (*Token, error) {
+ state := startState
+ var tokenType TokenType
+ var value []rune
+ var nextRune rune
+ var nextRuneType runeTokenClass
+ var err error
+
+ for {
+ nextRune, _, err = t.input.ReadRune()
+ nextRuneType = t.classifier.ClassifyRune(nextRune)
+
+ if err == io.EOF {
+ nextRuneType = eofRuneClass
+ err = nil
+ } else if err != nil {
+ return nil, err
+ }
+
+ switch state {
+ case startState: // no runes read yet
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ return nil, io.EOF
+ }
+ case spaceRuneClass:
+ {
+ }
+ case escapingQuoteRuneClass:
+ {
+ tokenType = WordToken
+ state = quotingEscapingState
+ }
+ case nonEscapingQuoteRuneClass:
+ {
+ tokenType = WordToken
+ state = quotingState
+ }
+ case escapeRuneClass:
+ {
+ tokenType = WordToken
+ state = escapingState
+ }
+ case commentRuneClass:
+ {
+ tokenType = CommentToken
+ state = commentState
+ }
+ default:
+ {
+ tokenType = WordToken
+ value = append(value, nextRune)
+ state = inWordState
+ }
+ }
+ }
+ case inWordState: // in a regular word
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ case spaceRuneClass:
+ {
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ case escapingQuoteRuneClass:
+ {
+ state = quotingEscapingState
+ }
+ case nonEscapingQuoteRuneClass:
+ {
+ state = quotingState
+ }
+ case escapeRuneClass:
+ {
+ state = escapingState
+ }
+ default:
+ {
+ value = append(value, nextRune)
+ }
+ }
+ }
+ case escapingState: // the rune after an escape character
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ err = fmt.Errorf("EOF found after escape character")
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ default:
+ {
+ state = inWordState
+ value = append(value, nextRune)
+ }
+ }
+ }
+ case escapingQuotedState: // the next rune after an escape character, in double quotes
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ err = fmt.Errorf("EOF found after escape character")
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ default:
+ {
+ state = quotingEscapingState
+ value = append(value, nextRune)
+ }
+ }
+ }
+ case quotingEscapingState: // in escaping double quotes
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ err = fmt.Errorf("EOF found when expecting closing quote")
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ case escapingQuoteRuneClass:
+ {
+ state = inWordState
+ }
+ case escapeRuneClass:
+ {
+ state = escapingQuotedState
+ }
+ default:
+ {
+ value = append(value, nextRune)
+ }
+ }
+ }
+ case quotingState: // in non-escaping single quotes
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ err = fmt.Errorf("EOF found when expecting closing quote")
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ case nonEscapingQuoteRuneClass:
+ {
+ state = inWordState
+ }
+ default:
+ {
+ value = append(value, nextRune)
+ }
+ }
+ }
+ case commentState: // in a comment
+ {
+ switch nextRuneType {
+ case eofRuneClass:
+ {
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ }
+ case spaceRuneClass:
+ {
+ if nextRune == '\n' {
+ state = startState
+ token := &Token{
+ tokenType: tokenType,
+ value: string(value)}
+ return token, err
+ } else {
+ value = append(value, nextRune)
+ }
+ }
+ default:
+ {
+ value = append(value, nextRune)
+ }
+ }
+ }
+ default:
+ {
+ return nil, fmt.Errorf("Unexpected state: %v", state)
+ }
+ }
+ }
+}
+
+// Next returns the next token in the stream.
+func (t *Tokenizer) Next() (*Token, error) {
+ return t.scanStream()
+}
+
+// Split partitions a string into a slice of strings.
+func Split(s string) ([]string, error) {
+ l := NewLexer(strings.NewReader(s))
+ subStrings := make([]string, 0)
+ for {
+ word, err := l.Next()
+ if err != nil {
+ if err == io.EOF {
+ return subStrings, nil
+ }
+ return subStrings, err
+ }
+ subStrings = append(subStrings, word)
+ }
+}