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authorBrent Baude <bbaude@redhat.com>2020-04-16 12:25:26 -0500
committerBrent Baude <bbaude@redhat.com>2020-04-16 15:53:58 -0500
commit241326a9a8c20ad7f2bcf651416b836e7778e090 (patch)
tree4001e8e47a022bb1b9bfbf2332c42e1aeb802f9e /pkg/varlinkapi/funcs.go
parent88c6fd06cd54fb9a8826306dfdf1a77e400de5de (diff)
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Podman V2 birth
remote podman v1 and replace with podman v2. Signed-off-by: Brent Baude <bbaude@redhat.com>
Diffstat (limited to 'pkg/varlinkapi/funcs.go')
-rw-r--r--pkg/varlinkapi/funcs.go121
1 files changed, 121 insertions, 0 deletions
diff --git a/pkg/varlinkapi/funcs.go b/pkg/varlinkapi/funcs.go
new file mode 100644
index 000000000..ed90ba050
--- /dev/null
+++ b/pkg/varlinkapi/funcs.go
@@ -0,0 +1,121 @@
+package varlinkapi
+
+import (
+ "fmt"
+ "os"
+ "path/filepath"
+ "strings"
+
+ "github.com/containers/image/v5/types"
+ "github.com/containers/libpod/libpod/image"
+ "github.com/google/shlex"
+ "github.com/pkg/errors"
+)
+
+func GetSystemContext(authfile string) (*types.SystemContext, error) {
+ if authfile != "" {
+ if _, err := os.Stat(authfile); err != nil {
+ return nil, errors.Wrapf(err, "error checking authfile path %s", authfile)
+ }
+ }
+ return image.GetSystemContext("", authfile, false), nil
+}
+
+func substituteCommand(cmd string) (string, error) {
+ var (
+ newCommand string
+ )
+
+ // Replace cmd with "/proc/self/exe" if "podman" or "docker" is being
+ // used. If "/usr/bin/docker" is provided, we also sub in podman.
+ // Otherwise, leave the command unchanged.
+ if cmd == "podman" || filepath.Base(cmd) == "docker" {
+ newCommand = "/proc/self/exe"
+ } else {
+ newCommand = cmd
+ }
+
+ // If cmd is an absolute or relative path, check if the file exists.
+ // Throw an error if it doesn't exist.
+ if strings.Contains(newCommand, "/") || strings.HasPrefix(newCommand, ".") {
+ res, err := filepath.Abs(newCommand)
+ if err != nil {
+ return "", err
+ }
+ if _, err := os.Stat(res); !os.IsNotExist(err) {
+ return res, nil
+ } else if err != nil {
+ return "", err
+ }
+ }
+
+ return newCommand, nil
+}
+
+// GenerateCommand takes a label (string) and converts it to an executable command
+func GenerateCommand(command, imageName, name, globalOpts string) ([]string, error) {
+ var (
+ newCommand []string
+ )
+ if name == "" {
+ name = imageName
+ }
+
+ cmd, err := shlex.Split(command)
+ if err != nil {
+ return nil, err
+ }
+
+ prog, err := substituteCommand(cmd[0])
+ if err != nil {
+ return nil, err
+ }
+ newCommand = append(newCommand, prog)
+
+ for _, arg := range cmd[1:] {
+ var newArg string
+ switch arg {
+ case "IMAGE":
+ newArg = imageName
+ case "$IMAGE":
+ newArg = imageName
+ case "IMAGE=IMAGE":
+ newArg = fmt.Sprintf("IMAGE=%s", imageName)
+ case "IMAGE=$IMAGE":
+ newArg = fmt.Sprintf("IMAGE=%s", imageName)
+ case "NAME":
+ newArg = name
+ case "NAME=NAME":
+ newArg = fmt.Sprintf("NAME=%s", name)
+ case "NAME=$NAME":
+ newArg = fmt.Sprintf("NAME=%s", name)
+ case "$NAME":
+ newArg = name
+ case "$GLOBAL_OPTS":
+ newArg = globalOpts
+ default:
+ newArg = arg
+ }
+ newCommand = append(newCommand, newArg)
+ }
+ return newCommand, nil
+}
+
+// GenerateRunEnvironment merges the current environment variables with optional
+// environment variables provided by the user
+func GenerateRunEnvironment(name, imageName string, opts map[string]string) []string {
+ newEnv := os.Environ()
+ newEnv = append(newEnv, fmt.Sprintf("NAME=%s", name))
+ newEnv = append(newEnv, fmt.Sprintf("IMAGE=%s", imageName))
+
+ if opts["opt1"] != "" {
+ newEnv = append(newEnv, fmt.Sprintf("OPT1=%s", opts["opt1"]))
+ }
+ if opts["opt2"] != "" {
+ newEnv = append(newEnv, fmt.Sprintf("OPT2=%s", opts["opt2"]))
+ }
+ if opts["opt3"] != "" {
+ newEnv = append(newEnv, fmt.Sprintf("OPT3=%s", opts["opt3"]))
+ }
+ return newEnv
+}