Make ':' a restricted character for file names

file names for podman load, save, export, and import cannot
contain ":" in them. It is a reserved character for parsing
filenames.

Signed-off-by: umohnani8 <umohnani@redhat.com>

Closes: #694
Approved by: rhatdan

5 files changed, 22 insertions, 0 deletions

diff --git a/cmd/podman/export.go b/cmd/podman/export.go
index eaf1ab39f..16c1f5c9b 100644
--- a/cmd/podman/export.go
+++ b/cmd/podman/export.go
@@ -56,6 +56,9 @@ func exportCmd(c *cli.Context) error {
 			return errors.Errorf("refusing to export to terminal. Use -o flag or redirect")
 		}
 	}
+	if err := validateFileName(output); err != nil {
+		return err
+	}
 
 	ctr, err := runtime.LookupContainer(args[0])
 	if err != nil {
diff --git a/cmd/podman/import.go b/cmd/podman/import.go
index 5a4fa45d9..446516024 100644
--- a/cmd/podman/import.go
+++ b/cmd/podman/import.go
@@ -75,6 +75,10 @@ func importCmd(c *cli.Context) error {
 		return errors.Errorf("too many arguments. Usage TARBALL [REFERENCE]")
 	}
 
+	if err := validateFileName(source); err != nil {
+		return err
+	}
+
 	changes := v1.ImageConfig{}
 	if c.IsSet("change") {
 		changes, err = util.GetImageConfig(c.StringSlice("change"))
diff --git a/cmd/podman/load.go b/cmd/podman/load.go
index 8186f1cc2..2f66df7c8 100644
--- a/cmd/podman/load.go
+++ b/cmd/podman/load.go
@@ -93,6 +93,9 @@ func loadCmd(c *cli.Context) error {
 			input = outFile.Name()
 		}
 	}
+	if err := validateFileName(input); err != nil {
+		return err
+	}
 
 	var writer io.Writer
 	if !c.Bool("quiet") {
diff --git a/cmd/podman/parse.go b/cmd/podman/parse.go
index b70e0caf7..484b9723f 100644
--- a/cmd/podman/parse.go
+++ b/cmd/podman/parse.go
@@ -816,3 +816,12 @@ func getLoggingPath(opts []string) string {
 	}
 	return ""
 }
+
+// validateFileName returns an error if filename contains ":"
+// as it is currently not supported
+func validateFileName(filename string) error {
+	if strings.Contains(filename, ":") {
+		return errors.Errorf("invalid filename (should not contain ':') %q", filename)
+	}
+	return nil
+}
diff --git a/cmd/podman/save.go b/cmd/podman/save.go
index e41e95f69..ce82b588a 100644
--- a/cmd/podman/save.go
+++ b/cmd/podman/save.go
@@ -87,6 +87,9 @@ func saveCmd(c *cli.Context) error {
 			return errors.Errorf("refusing to save to terminal. Use -o flag or redirect")
 		}
 	}
+	if err := validateFileName(output); err != nil {
+		return err
+	}
 
 	var dst, manifestType string
 	switch c.String("format") {