add -debug to ISSUE_TEMPLATE (#57)

* Fixed alpine

* Fixed to use vulnsrc

.dockerignore

@@ -1 +1,2 @@
+.circleci
 imgs

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,45 @@
+<!--
+
+---------------------------------------------------
+FEATURE REQUEST
+---------------------------------------------------
+
+If this is a FEATURE REQUEST, request format does not matter  
+ 
+
+---------------------------------------------------
+BUG REPORT INFORMATION
+---------------------------------------------------
+
+You do NOT have to include this information if this is a FEATURE REQUEST
+    
+If this is a BUG REPORT, provide key information from your environment:
+
+-->
+
+**Description**
+
+<!--
+Briefly describe the problem you are having in a few paragraphs.
+-->
+
+**What did you expect to happen?**
+
+
+**What happened instead?**
+
+
+**Output of run with `-debug`:**
+
+```
+(paste your output here)
+```
+
+**Output of `trivy -v`:**
+
+```
+(paste your output here)
+```
+
+**Additional details (base image name, container registry info...):**
+

Dockerfile

@@ -11,4 +11,4 @@ RUN apk --no-cache add ca-certificates git
 COPY --from=builder /trivy /usr/local/bin/trivy
 RUN chmod +x /usr/local/bin/trivy
 
-CMD ["trivy"]
+ENTRYPOINT ["trivy"]

LICENSE

@@ -1,21 +1,661 @@
-MIT License
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
 
-Copyright (c) 2019 Teppei Fukuda
+ 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.
 
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+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

cmd/trivy/main.go

@@ -69,9 +69,17 @@ OPTIONS:
 			Name:  "skip-update",
 			Usage: "skip db update",
 		},
+		cli.StringFlag{
+			Name:  "only-update",
+			Usage: "update db only specified distribution (comma separated)",
+		},
 		cli.BoolFlag{
-			Name:  "clean, c",
-			Usage: "clean all cache",
+			Name:  "reset",
+			Usage: "remove all caches and database",
+		},
+		cli.BoolFlag{
+			Name:  "clear-cache, c",
+			Usage: "clear image caches",
 		},
 		cli.BoolFlag{
 			Name:  "quiet, q",
@@ -85,20 +93,26 @@ OPTIONS:
 			Name:  "refresh",
 			Usage: "refresh DB (usually used after version update of trivy)",
 		},
+		cli.BoolFlag{
+			Name:  "auto-refresh",
+			Usage: "refresh DB automatically when updating version of trivy",
+		},
 		cli.BoolFlag{
 			Name:  "debug, d",
 			Usage: "debug mode",
 		},
+		cli.StringFlag{
+			Name:  "cache-dir",
+			Usage: "cache directory",
+		},
 	}
 
-	app.Action = func(c *cli.Context) error {
-		return pkg.Run(c)
-	}
+	app.Action = pkg.Run
 
 	err := app.Run(os.Args)
 	if err != nil {
 		if log.Logger != nil {
-			log.Logger.Fatal(err)
+			log.Fatal(err)
 		}
 		l.Fatal(err)
 	}

go.mod

@@ -5,22 +5,22 @@ go 1.12
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/briandowns/spinner v0.0.0-20190319032542-ac46072a5a91
+	github.com/caarlos0/env/v6 v6.0.0
 	github.com/emirpasic/gods v1.12.0 // indirect
 	github.com/etcd-io/bbolt v1.3.2
 	github.com/fatih/color v1.7.0
 	github.com/genuinetools/reg v0.16.0
 	github.com/gliderlabs/ssh v0.1.3 // indirect
 	github.com/golang/protobuf v1.3.1 // indirect
-	github.com/knqyf263/fanal v0.0.0-20190513061210-e1980f95d1f5
-	github.com/knqyf263/go-deb-version v0.0.0-20170509080151-9865fe14d09b
-	github.com/knqyf263/go-dep-parser v0.0.0-20190511063217-d5d543bfc261
+	github.com/knqyf263/fanal v0.0.0-20190521154631-a2dde7e171c6
+	github.com/knqyf263/go-deb-version v0.0.0-20190517075300-09fca494f03d
+	github.com/knqyf263/go-dep-parser v0.0.0-20190521150559-1ef8521d17a0
 	github.com/knqyf263/go-rpm-version v0.0.0-20170716094938-74609b86c936
 	github.com/knqyf263/go-version v1.1.1
 	github.com/mattn/go-colorable v0.1.1 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/olekukonko/tablewriter v0.0.1
-	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/urfave/cli v1.20.0
 	github.com/xanzy/ssh-agent v0.2.1 // indirect
 	go.etcd.io/bbolt v1.3.2 // indirect

go.sum

@@ -27,13 +27,13 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLM
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/briandowns/spinner v0.0.0-20190319032542-ac46072a5a91 h1:GMmnK0dvr0Sf0gx3DvTbln0c8DE07B7sPVD9dgHOqo4=
 github.com/briandowns/spinner v0.0.0-20190319032542-ac46072a5a91/go.mod h1:hw/JEQBIE+c/BLI4aKM8UU8v+ZqrD3h7HC27kKt8JQU=
+github.com/caarlos0/env/v6 v6.0.0 h1:NZt6FAoB8ieKO5lEwRdwCzYxWFx7ZYF2R7UcoyaWtyc=
+github.com/caarlos0/env/v6 v6.0.0/go.mod h1:+wdyOmtjoZIW2GJOc2OYa5NoOFuWD/bIpWqm30NgtRk=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/containerd/continuity v0.0.0-20180921161001-7f53d412b9eb h1:qSMRxG547z/BgQmyVyADxaMADQXVAD9uleP2sQeClbo=
 github.com/containerd/continuity v0.0.0-20180921161001-7f53d412b9eb/go.mod h1:GL3xCUCBDV3CZiTSEKksMWbLE66hEyuu9qyDOOqM47Y=
 github.com/coreos/clair v0.0.0-20180919182544-44ae4bc9590a h1:glxUtT0RlaVJU86kg78ygzfhwW6D+uj5H+aOK01QDgI=
 github.com/coreos/clair v0.0.0-20180919182544-44ae4bc9590a/go.mod h1:uXhHPWAoRqw0jJc2f8RrPCwRhIo9otQ8OEWUFtpCiwA=
-github.com/d4l3k/messagediff v1.2.1 h1:ZcAIMYsUg0EAp9X+tt8/enBE/Q8Yd5kzPynLyKptt9U=
-github.com/d4l3k/messagediff v1.2.1/go.mod h1:Oozbb1TVXFac9FtSIxHBMnBCq2qeH/2KkEQxENCrlLo=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -116,12 +116,12 @@ github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e h1:RgQk53JHp
 github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/knqyf263/berkeleydb v0.0.0-20190501065933-fafe01fb9662/go.mod h1:bu1CcN4tUtoRcI/B/RFHhxMNKFHVq/c3SV+UTyduoXg=
-github.com/knqyf263/fanal v0.0.0-20190513061210-e1980f95d1f5 h1:d6oqR7xZEMoNDp0x7/g/DCKZ1n0exzr76eyzOz8p2ls=
-github.com/knqyf263/fanal v0.0.0-20190513061210-e1980f95d1f5/go.mod h1:/3MJJHzCSQm4xQMUnBAGx7aI5zvWA98twxekdDcLzbY=
-github.com/knqyf263/go-deb-version v0.0.0-20170509080151-9865fe14d09b h1:DiDMmSwuY27PJxA2Gs0+uI/bQ/ehKARaGXRdlp+wFis=
-github.com/knqyf263/go-deb-version v0.0.0-20170509080151-9865fe14d09b/go.mod h1:o8sgWoz3JADecfc/cTYD92/Et1yMqMy0utV1z+VaZao=
-github.com/knqyf263/go-dep-parser v0.0.0-20190511063217-d5d543bfc261 h1:RPgPsbEsYj6LuOjZnKl2DvbfodNWRuWKZfWJkrD7l8s=
-github.com/knqyf263/go-dep-parser v0.0.0-20190511063217-d5d543bfc261/go.mod h1:gSiqSkOFPstUZu/qZ4wnNJS69PtQQnPl397vxKHJ5mQ=
+github.com/knqyf263/fanal v0.0.0-20190521154631-a2dde7e171c6 h1:qfIU7I6yo7zWpqqj0Zxt3iWY51N5D3BFUXdMjKjrAXU=
+github.com/knqyf263/fanal v0.0.0-20190521154631-a2dde7e171c6/go.mod h1:guPOH3Sfj5M4j/LvCOoWmuYCXnjReDIwJO+S89Fje1E=
+github.com/knqyf263/go-deb-version v0.0.0-20190517075300-09fca494f03d h1:X4cedH4Kn3JPupAwwWuo4AzYp16P0OyLO9d7OnMZc/c=
+github.com/knqyf263/go-deb-version v0.0.0-20190517075300-09fca494f03d/go.mod h1:o8sgWoz3JADecfc/cTYD92/Et1yMqMy0utV1z+VaZao=
+github.com/knqyf263/go-dep-parser v0.0.0-20190521150559-1ef8521d17a0 h1:DOQ2UbTciy48dV9vpZ25BOiShrWIWZwBdMOy7SD1Wow=
+github.com/knqyf263/go-dep-parser v0.0.0-20190521150559-1ef8521d17a0/go.mod h1:gSiqSkOFPstUZu/qZ4wnNJS69PtQQnPl397vxKHJ5mQ=
 github.com/knqyf263/go-rpm-version v0.0.0-20170716094938-74609b86c936 h1:HDjRqotkViMNcGMGicb7cgxklx8OwnjtCBmyWEqrRvM=
 github.com/knqyf263/go-rpm-version v0.0.0-20170716094938-74609b86c936/go.mod h1:i4sF0l1fFnY1aiw08QQSwVAFxHEm311Me3WsU/X7nL0=
 github.com/knqyf263/go-rpmdb v0.0.0-20190501070121-10a1c42a10dc/go.mod h1:MrSSvdMpTSymaQWk1yFr9sxFSyQmKMj6jkbvGrchBV8=

pkg/db/db.go

@@ -15,11 +15,11 @@ import (
 )
 
 var (
-	db    *bolt.DB
-	dbDir = filepath.Join(utils.CacheDir(), "db")
+	db *bolt.DB
 )
 
 func Init() (err error) {
+	dbDir := filepath.Join(utils.CacheDir(), "db")
 	if err = os.MkdirAll(dbDir, 0700); err != nil {
 		return xerrors.Errorf("failed to mkdir: %w", err)
 	}
@@ -33,10 +33,26 @@ func Init() (err error) {
 	return nil
 }
 
+func Close() error {
+	if err := db.Close(); err != nil {
+		return xerrors.Errorf("failed to close DB: %w", err)
+	}
+	return nil
+}
+
 func Reset() error {
+	if err := Close(); err != nil {
+		return xerrors.Errorf("failed to reset DB: %w", err)
+	}
+
+	dbDir := filepath.Join(utils.CacheDir(), "db")
 	if err := os.RemoveAll(dbDir); err != nil {
 		return xerrors.Errorf("failed to reset DB: %w", err)
 	}
+
+	if err := Init(); err != nil {
+		return xerrors.Errorf("failed to reset DB: %w", err)
+	}
 	return nil
 }
 
@@ -89,9 +105,7 @@ func Put(root *bolt.Bucket, nestedBucket, key string, value interface{}) error {
 	return nested.Put([]byte(key), v)
 }
 func BatchUpdate(fn func(tx *bolt.Tx) error) error {
-	err := db.Batch(func(tx *bolt.Tx) error {
-		return fn(tx)
-	})
+	err := db.Batch(fn)
 	if err != nil {
 		return xerrors.Errorf("error in batch update: %w", err)
 	}

pkg/git/git.go

@@ -38,7 +38,7 @@ func CloneOrPull(url, repoPath string) (map[string]struct{}, error) {
 		}
 		log.Logger.Debug("remove an existed directory")
 
-		suffix := " The first time will take a while..."
+		suffix := " It will take a while for the first time..."
 		s := utils.NewSpinner(suffix)
 		s.Start()
 		defer s.Stop()
@@ -92,7 +92,7 @@ func clone(url, repoPath string) error {
 }
 
 func cloneByOSCommand(url, repoPath string) error {
-	commandAndArgs := []string{"clone", url, repoPath}
+	commandAndArgs := []string{"clone", "--depth=1", url, repoPath}
 	_, err := utils.Exec("git", commandAndArgs)
 	if err != nil {
 		return xerrors.Errorf("error in git clone: %w", err)

pkg/log/logger.go

@@ -6,9 +6,13 @@ import (
 	"golang.org/x/xerrors"
 )
 
-var Logger *zap.SugaredLogger
+var (
+	Logger      *zap.SugaredLogger
+	debugOption bool
+)
 
 func InitLogger(debug bool) (err error) {
+	debugOption = debug
 	Logger, err = newLogger(debug)
 	if err != nil {
 		return xerrors.Errorf("error in new logger: %w", err)
@@ -29,8 +33,8 @@ func newLogger(debug bool) (*zap.SugaredLogger, error) {
 		Level:             level,
 		Encoding:          "console",
 		Development:       debug,
-		DisableStacktrace: !debug,
-		DisableCaller:     !debug,
+		DisableStacktrace: true,
+		DisableCaller:     true,
 		EncoderConfig: zapcore.EncoderConfig{
 			TimeKey:        "Time",
 			LevelKey:       "Level",
@@ -53,3 +57,10 @@ func newLogger(debug bool) (*zap.SugaredLogger, error) {
 
 	return logger.Sugar(), nil
 }
+
+func Fatal(err error) {
+	if debugOption {
+		Logger.Fatalf("%+v", err)
+	}
+	Logger.Fatal(err)
+}

pkg/report/writer.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"os"
 	"strings"
 
 	"golang.org/x/xerrors"
@@ -16,8 +17,8 @@ import (
 type Results []Result
 
 type Result struct {
-	FileName        string `json:"file"`
-	Vulnerabilities []vulnerability.DetectedVulnerability
+	FileName        string                                `json:"Target"`
+	Vulnerabilities []vulnerability.DetectedVulnerability `json:"Vulnerabilities"`
 }
 
 type Writer interface {
@@ -50,8 +51,12 @@ func (tw TableWriter) write(result Result) {
 		if len(splittedTitle) >= 12 {
 			title = strings.Join(splittedTitle[:12], " ") + "..."
 		}
-		table.Append([]string{v.PkgName, v.VulnerabilityID, vulnerability.ColorizeSeverity(v.Severity),
-			v.InstalledVersion, v.FixedVersion, title})
+		if tw.Output == os.Stdout {
+			table.Append([]string{v.PkgName, v.VulnerabilityID, vulnerability.ColorizeSeverity(v.Severity),
+				v.InstalledVersion, v.FixedVersion, title})
+		} else {
+			table.Append([]string{v.PkgName, v.VulnerabilityID, v.Severity, v.InstalledVersion, v.FixedVersion, title})
+		}
 	}
 
 	var results []string
@@ -79,11 +84,7 @@ type JsonWriter struct {
 }
 
 func (jw JsonWriter) Write(results Results) error {
-	out := map[string][]vulnerability.DetectedVulnerability{}
-	for _, result := range results {
-		out[result.FileName] = result.Vulnerabilities
-	}
-	output, err := json.MarshalIndent(out, "", "  ")
+	output, err := json.MarshalIndent(results, "", "  ")
 	if err != nil {
 		return xerrors.Errorf("failed to marshal json: %w", err)
 	}

pkg/run.go

@@ -5,35 +5,38 @@ import (
 	"os"
 	"strings"
 
+	"github.com/genuinetools/reg/registry"
 	"github.com/knqyf263/fanal/cache"
-
-	"github.com/knqyf263/trivy/pkg/utils"
-
-	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
-
-	"github.com/knqyf263/trivy/pkg/report"
-	"github.com/knqyf263/trivy/pkg/scanner"
-	"github.com/knqyf263/trivy/pkg/vulnsrc"
-
-	"github.com/urfave/cli"
-	"golang.org/x/xerrors"
-
 	"github.com/knqyf263/trivy/pkg/db"
 	"github.com/knqyf263/trivy/pkg/log"
+	"github.com/knqyf263/trivy/pkg/report"
+	"github.com/knqyf263/trivy/pkg/scanner"
+	"github.com/knqyf263/trivy/pkg/utils"
+	"github.com/knqyf263/trivy/pkg/vulnsrc"
+	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
+	"github.com/urfave/cli"
+	"golang.org/x/xerrors"
 )
 
 func Run(c *cli.Context) (err error) {
 	cliVersion := c.App.Version
 
+	utils.Quiet = c.Bool("quiet")
 	debug := c.Bool("debug")
 	if err = log.InitLogger(debug); err != nil {
 		l.Fatal(err)
 	}
+
+	cacheDir := c.String("cache-dir")
+	if cacheDir != "" {
+		utils.SetCacheDir(cacheDir)
+	}
+
 	log.Logger.Debugf("cache dir:  %s", utils.CacheDir())
 
-	clean := c.Bool("clean")
-	if clean {
-		log.Logger.Info("Cleaning caches...")
+	reset := c.Bool("reset")
+	if reset {
+		log.Logger.Info("Resetting...")
 		if err = cache.Clear(); err != nil {
 			return xerrors.New("failed to remove image layer cache")
 		}
@@ -43,14 +46,80 @@ func Run(c *cli.Context) (err error) {
 		return nil
 	}
 
-	args := c.Args()
-	filePath := c.String("input")
-	if filePath == "" && len(args) == 0 {
-		log.Logger.Info(`trivy" requires at least 1 argument or --input option.`)
-		cli.ShowAppHelpAndExit(c, 1)
+	clearCache := c.Bool("clear-cache")
+	if clearCache {
+		log.Logger.Info("Removing image caches...")
+		if err = cache.Clear(); err != nil {
+			return xerrors.New("failed to remove image layer cache")
+		}
 	}
 
-	utils.Quiet = c.Bool("quiet")
+	refresh := c.Bool("refresh")
+	args := c.Args()
+	var noTarget bool
+	filePath := c.String("input")
+	if filePath == "" && len(args) == 0 {
+		noTarget = true
+		if !reset && !clearCache && !refresh {
+			log.Logger.Info(`trivy" requires at least 1 argument or --input option.`)
+			cli.ShowAppHelpAndExit(c, 1)
+		}
+	}
+
+	autoRefresh := c.Bool("auto-refresh")
+	skipUpdate := c.Bool("skip-update")
+	onlyUpdate := c.String("only-update")
+	if refresh || autoRefresh {
+		if skipUpdate {
+			return xerrors.New("The --skip-update option can not be specified with the --refresh or --auto-refresh option")
+		}
+		if onlyUpdate != "" {
+			return xerrors.New("The --only-update option can not be specified with the --refresh or --auto-refresh option")
+		}
+	}
+	if skipUpdate && onlyUpdate != "" {
+		return xerrors.New("The --skip-update and --only-update option can not be specified both")
+	}
+
+	if err = db.Init(); err != nil {
+		return xerrors.Errorf("error in vulnerability DB initialize: %w", err)
+	}
+
+	needRefresh := false
+	dbVersion := db.GetVersion()
+	if dbVersion != "" && dbVersion != cliVersion {
+		if !refresh && !autoRefresh {
+			return xerrors.New("Detected version update of trivy. Please try again with --refresh or --auto-refresh option")
+		}
+		needRefresh = true
+	}
+
+	if refresh || needRefresh {
+		log.Logger.Info("Refreshing DB...")
+		if err = db.Reset(); err != nil {
+			return xerrors.Errorf("error in refresh DB: %w", err)
+		}
+	}
+	// this condition is already validated by skipUpdate && onlyUpdate != ""
+	if onlyUpdate != "" {
+		log.Logger.Warn("The --update-only option may cause the vulnerability details such as severity and title not to be displayed")
+		if err = vulnsrc.Update(strings.Split(onlyUpdate, ",")); err != nil {
+			return xerrors.Errorf("error in vulnerability DB update: %w", err)
+		}
+	} else {
+		if err = vulnsrc.Update(vulnsrc.UpdateList); err != nil {
+			return xerrors.Errorf("error in vulnerability DB update: %w", err)
+		}
+	}
+
+	if err = db.SetVersion(cliVersion); err != nil {
+		return xerrors.Errorf("unexpected error: %w", err)
+	}
+
+	// When specifying no image name and file name
+	if noTarget {
+		return nil
+	}
 
 	o := c.String("output")
 	output := os.Stdout
@@ -70,40 +139,29 @@ func Run(c *cli.Context) (err error) {
 		severities = append(severities, severity)
 	}
 
-	if c.Bool("refresh") {
-		log.Logger.Info("Resetting DB...")
-		if err = db.Reset(); err != nil {
-			return xerrors.Errorf("error in refresh DB: %w", err)
-		}
-	}
-
-	if err = db.Init(); err != nil {
-		return xerrors.Errorf("error in vulnerability DB initialize: %w", err)
-	}
-
-	dbVersion := db.GetVersion()
-	if dbVersion != "" && dbVersion != cliVersion {
-		log.Logger.Fatal("Detected version update of trivy. Please try again with --refresh option")
-	}
-
-	if !c.Bool("skip-update") {
-		if err = vulnsrc.Update(); err != nil {
-			return xerrors.Errorf("error in vulnerability DB update: %w", err)
-		}
-	}
-
-	ignoreUnfixed := c.Bool("ignore-unfixed")
-
 	var imageName string
 	if filePath == "" {
 		imageName = args[0]
 	}
+
+	// Check whether 'latest' tag is used
+	if imageName != "" {
+		image, err := registry.ParseImage(imageName)
+		if err != nil {
+			return xerrors.Errorf("invalid image: %w", err)
+		}
+		if image.Tag == "latest" && !clearCache {
+			log.Logger.Warn("You should avoid using the :latest tag as it is cached. You need to specify '--clear-cache' option when :latest image is changed")
+		}
+	}
+
 	vulns, err := scanner.ScanImage(imageName, filePath)
 	if err != nil {
 		return xerrors.Errorf("error in image scan: %w", err)
 	}
 
 	var results report.Results
+	ignoreUnfixed := c.Bool("ignore-unfixed")
 	for path, vuln := range vulns {
 		results = append(results, report.Result{
 			FileName:        path,
@@ -112,23 +170,19 @@ func Run(c *cli.Context) (err error) {
 	}
 
 	var writer report.Writer
-	switch c.String("format") {
+	switch format := c.String("format"); format {
 	case "table":
 		writer = &report.TableWriter{Output: output}
 	case "json":
 		writer = &report.JsonWriter{Output: output}
 	default:
-		xerrors.New("unknown format")
+		return xerrors.Errorf("unknown format: %v", format)
 	}
 
 	if err = writer.Write(results); err != nil {
 		return xerrors.Errorf("failed to write results: %w", err)
 	}
 
-	if err = db.SetVersion(cliVersion); err != nil {
-		return xerrors.Errorf("unexpected error: %w", err)
-	}
-
 	exitCode := c.Int("exit-code")
 	if exitCode != 0 {
 		for _, result := range results {

pkg/scanner/library/node/advisory.go

@@ -1,4 +1,4 @@
-package npm
+package node
 
 import (
 	"encoding/json"

pkg/scanner/library/node/scan.go

@@ -1,30 +1,33 @@
-package npm
+package node
 
 import (
 	"fmt"
 	"os"
 	"strings"
 
+	version "github.com/knqyf263/go-version"
 	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
 
 	"golang.org/x/xerrors"
 
 	"github.com/knqyf263/go-dep-parser/pkg/npm"
 	ptypes "github.com/knqyf263/go-dep-parser/pkg/types"
-	"github.com/knqyf263/go-version"
+	"github.com/knqyf263/go-dep-parser/pkg/yarn"
 	"github.com/knqyf263/trivy/pkg/scanner/utils"
 )
 
 const (
-	scannerType = "npm"
+	ScannerTypeNpm  = "npm"
+	ScannerTypeYarn = "yarn"
 )
 
 type Scanner struct {
-	db AdvisoryDB
+	db          AdvisoryDB
+	scannerType string
 }
 
-func NewScanner() *Scanner {
-	return &Scanner{}
+func NewScanner(scannerType string) *Scanner {
+	return &Scanner{scannerType: scannerType}
 }
 
 func (s *Scanner) Detect(pkgName string, pkgVer *version.Version) ([]vulnerability.DetectedVulnerability, error) {
@@ -72,12 +75,28 @@ func (s *Scanner) Detect(pkgName string, pkgVer *version.Version) ([]vulnerabili
 }
 
 func (s *Scanner) ParseLockfile(f *os.File) ([]ptypes.Library, error) {
+	if s.Type() == ScannerTypeNpm {
+		return s.parseNpm(f)
+	}
+	return s.parseYarn(f)
+}
+
+func (s *Scanner) parseNpm(f *os.File) ([]ptypes.Library, error) {
 	libs, err := npm.Parse(f)
 	if err != nil {
 		return nil, xerrors.Errorf("invalid package-lock.json format: %w", err)
 	}
 	return libs, nil
 }
-func (s *Scanner) Type() string {
-	return scannerType
+
+func (s *Scanner) parseYarn(f *os.File) ([]ptypes.Library, error) {
+	libs, err := yarn.Parse(f)
+	if err != nil {
+		return nil, xerrors.Errorf("invalid yarn.lock format: %w", err)
+	}
+	return libs, nil
+}
+
+func (s *Scanner) Type() string {
+	return s.scannerType
 }

pkg/scanner/library/python/advisory.go

@@ -1,4 +1,4 @@
-package pipenv
+package python
 
 import (
 	"encoding/json"

pkg/scanner/library/python/scan.go

@@ -1,4 +1,4 @@
-package pipenv
+package python
 
 import (
 	"os"
@@ -9,21 +9,24 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/knqyf263/go-dep-parser/pkg/pipenv"
+	"github.com/knqyf263/go-dep-parser/pkg/poetry"
 	ptypes "github.com/knqyf263/go-dep-parser/pkg/types"
 	"github.com/knqyf263/go-version"
 	"github.com/knqyf263/trivy/pkg/scanner/utils"
 )
 
 const (
-	scannerType = "pipenv"
+	ScannerTypePipenv = "pipenv"
+	ScannerTypePoetry = "poetry"
 )
 
 type Scanner struct {
-	db AdvisoryDB
+	db          AdvisoryDB
+	scannerType string
 }
 
-func NewScanner() *Scanner {
-	return &Scanner{}
+func NewScanner(scannerType string) *Scanner {
+	return &Scanner{scannerType: scannerType}
 }
 
 func (s *Scanner) Detect(pkgName string, pkgVer *version.Version) ([]vulnerability.DetectedVulnerability, error) {
@@ -63,12 +66,28 @@ func createFixedVersions(specs []string) string {
 }
 
 func (s *Scanner) ParseLockfile(f *os.File) ([]ptypes.Library, error) {
+	if s.Type() == ScannerTypePipenv {
+		return s.parsePipenv(f)
+	}
+	return s.parsePoetry(f)
+}
+
+func (s *Scanner) parsePipenv(f *os.File) ([]ptypes.Library, error) {
 	libs, err := pipenv.Parse(f)
 	if err != nil {
 		return nil, xerrors.Errorf("invalid Pipfile.lock format: %w", err)
 	}
 	return libs, nil
 }
-func (s *Scanner) Type() string {
-	return scannerType
+
+func (s *Scanner) parsePoetry(f *os.File) ([]ptypes.Library, error) {
+	libs, err := poetry.Parse(f)
+	if err != nil {
+		return nil, xerrors.Errorf("invalid poetry.lock format: %w", err)
+	}
+	return libs, nil
+}
+
+func (s *Scanner) Type() string {
+	return s.scannerType
 }

pkg/scanner/library/scan.go

@@ -12,6 +12,8 @@ import (
 	_ "github.com/knqyf263/fanal/analyzer/library/composer"
 	_ "github.com/knqyf263/fanal/analyzer/library/npm"
 	_ "github.com/knqyf263/fanal/analyzer/library/pipenv"
+	_ "github.com/knqyf263/fanal/analyzer/library/poetry"
+	_ "github.com/knqyf263/fanal/analyzer/library/yarn"
 	"github.com/knqyf263/fanal/extractor"
 	ptypes "github.com/knqyf263/go-dep-parser/pkg/types"
 	"github.com/knqyf263/go-version"
@@ -19,8 +21,8 @@ import (
 	"github.com/knqyf263/trivy/pkg/scanner/library/bundler"
 	"github.com/knqyf263/trivy/pkg/scanner/library/cargo"
 	"github.com/knqyf263/trivy/pkg/scanner/library/composer"
-	"github.com/knqyf263/trivy/pkg/scanner/library/npm"
-	"github.com/knqyf263/trivy/pkg/scanner/library/pipenv"
+	"github.com/knqyf263/trivy/pkg/scanner/library/node"
+	"github.com/knqyf263/trivy/pkg/scanner/library/python"
 	"golang.org/x/xerrors"
 )
 
@@ -41,9 +43,13 @@ func NewScanner(filename string) Scanner {
 	case "composer.lock":
 		scanner = composer.NewScanner()
 	case "package-lock.json":
-		scanner = npm.NewScanner()
+		scanner = node.NewScanner(node.ScannerTypeNpm)
+	case "yarn.lock":
+		scanner = node.NewScanner(node.ScannerTypeYarn)
 	case "Pipfile.lock":
-		scanner = pipenv.NewScanner()
+		scanner = python.NewScanner(python.ScannerTypePipenv)
+	case "poetry.lock":
+		scanner = python.NewScanner(python.ScannerTypePoetry)
 	default:
 		return nil
 	}
@@ -69,9 +75,7 @@ func Scan(files extractor.FileMap) (map[string][]vulnerability.DetectedVulnerabi
 			return nil, xerrors.Errorf("failed to scan %s vulnerabilities: %w", scanner.Type(), err)
 		}
 
-		if len(vulns) != 0 {
-			vulnerabilities[string(path)] = vulns
-		}
+		vulnerabilities[string(path)] = vulns
 	}
 	return vulnerabilities, nil
 }

pkg/scanner/ospkg/alpine/alpine.go

@@ -3,17 +3,13 @@ package alpine
 import (
 	"strings"
 
-	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
-
-	"golang.org/x/xerrors"
-
-	version "github.com/knqyf263/go-rpm-version"
-	"github.com/knqyf263/trivy/pkg/scanner/utils"
-
-	"github.com/knqyf263/trivy/pkg/vulnsrc/alpine"
-
 	"github.com/knqyf263/fanal/analyzer"
+	version "github.com/knqyf263/go-rpm-version"
 	"github.com/knqyf263/trivy/pkg/log"
+	"github.com/knqyf263/trivy/pkg/scanner/utils"
+	"github.com/knqyf263/trivy/pkg/vulnsrc/alpine"
+	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
+	"golang.org/x/xerrors"
 )
 
 type Scanner struct{}

pkg/scanner/ospkg/debian/debian.go

@@ -34,15 +34,12 @@ func (s *Scanner) Detect(osVer string, pkgs []analyzer.Package) ([]vulnerability
 
 	var vulns []vulnerability.DetectedVulnerability
 	for _, pkg := range pkgs {
-		if pkg.Type != analyzer.TypeSource {
-			continue
-		}
-		advisories, err := debianoval.Get(osVer, pkg.Name)
+		advisories, err := debianoval.Get(osVer, pkg.SrcName)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to get debian OVAL: %w", err)
 		}
 
-		installed := utils.FormatVersion(pkg)
+		installed := utils.FormatSrcVersion(pkg)
 		installedVersion, err := version.NewVersion(installed)
 		if err != nil {
 			log.Logger.Debugf("failed to parse Debian installed package version: %w", err)
@@ -66,7 +63,7 @@ func (s *Scanner) Detect(osVer string, pkgs []analyzer.Package) ([]vulnerability
 				vulns = append(vulns, vuln)
 			}
 		}
-		advisories, err = debian.Get(osVer, pkg.Name)
+		advisories, err = debian.Get(osVer, pkg.SrcName)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to get debian advisory: %w", err)
 		}

pkg/scanner/ospkg/redhat/redhat.go

@@ -28,23 +28,25 @@ func (s *Scanner) Detect(osVer string, pkgs []analyzer.Package) ([]vulnerability
 
 	var vulns []vulnerability.DetectedVulnerability
 	for _, pkg := range pkgs {
-		advisories, err := redhat.Get(osVer, pkg.Name)
+		advisories, err := redhat.Get(osVer, pkg.SrcName)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to get Red Hat advisories: %w", err)
 		}
 
-		installed := utils.FormatVersion(pkg)
+		installed := utils.FormatSrcVersion(pkg)
 		installedVersion := version.NewVersion(installed)
 		for _, adv := range advisories {
 			fixedVersion := version.NewVersion(adv.FixedVersion)
 
+			vuln := vulnerability.DetectedVulnerability{
+				VulnerabilityID:  adv.VulnerabilityID,
+				PkgName:          pkg.Name,
+				InstalledVersion: installed,
+			}
 			if installedVersion.LessThan(fixedVersion) {
-				vuln := vulnerability.DetectedVulnerability{
-					VulnerabilityID:  adv.VulnerabilityID,
-					PkgName:          pkg.Name,
-					InstalledVersion: installed,
-					FixedVersion:     adv.FixedVersion,
-				}
+				vuln.FixedVersion = adv.FixedVersion
+				vulns = append(vulns, vuln)
+			} else if adv.FixedVersion == "" {
 				vulns = append(vulns, vuln)
 			}
 		}

pkg/scanner/ospkg/scan.go

@@ -5,7 +5,9 @@ import (
 	_ "github.com/knqyf263/fanal/analyzer/command/apk"
 	fos "github.com/knqyf263/fanal/analyzer/os"
 	_ "github.com/knqyf263/fanal/analyzer/os/alpine"
+	_ "github.com/knqyf263/fanal/analyzer/os/amazonlinux"
 	_ "github.com/knqyf263/fanal/analyzer/os/debianbase"
+	_ "github.com/knqyf263/fanal/analyzer/os/opensuse"
 	_ "github.com/knqyf263/fanal/analyzer/os/redhatbase"
 	_ "github.com/knqyf263/fanal/analyzer/pkg/apk"
 	_ "github.com/knqyf263/fanal/analyzer/pkg/dpkg"
@@ -41,7 +43,8 @@ func Scan(files extractor.FileMap) (string, string, []vulnerability.DetectedVuln
 	case fos.RedHat, fos.CentOS:
 		s = redhat.NewScanner()
 	default:
-		return "", "", nil, xerrors.New("unsupported os")
+		log.Logger.Warnf("unsupported os : %s", os.Family)
+		return "", "", nil, nil
 	}
 	pkgs, err := analyzer.GetPackages(files)
 	if err != nil {

pkg/scanner/ospkg/ubuntu/ubuntu.go

@@ -24,12 +24,12 @@ func (s *Scanner) Detect(osVer string, pkgs []analyzer.Package) ([]vulnerability
 
 	var vulns []vulnerability.DetectedVulnerability
 	for _, pkg := range pkgs {
-		advisories, err := ubuntu.Get(osVer, pkg.Name)
+		advisories, err := ubuntu.Get(osVer, pkg.SrcName)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to get Ubuntu advisories: %w", err)
 		}
 
-		installed := utils.FormatVersion(pkg)
+		installed := utils.FormatSrcVersion(pkg)
 		installedVersion, err := version.NewVersion(installed)
 		if err != nil {
 			log.Logger.Debugf("failed to parse Ubuntu installed package version: %w", err)

pkg/scanner/scan.go

@@ -6,22 +6,14 @@ import (
 	"fmt"
 	"os"
 
-	"golang.org/x/crypto/ssh/terminal"
-
-	"github.com/genuinetools/reg/registry"
-
-	"github.com/knqyf263/trivy/pkg/log"
-
-	"github.com/knqyf263/trivy/pkg/scanner/library"
-
-	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
-
-	"github.com/knqyf263/trivy/pkg/scanner/ospkg"
-
-	"golang.org/x/xerrors"
-
 	"github.com/knqyf263/fanal/analyzer"
 	"github.com/knqyf263/fanal/extractor"
+	"github.com/knqyf263/trivy/pkg/scanner/library"
+	"github.com/knqyf263/trivy/pkg/scanner/ospkg"
+	"github.com/knqyf263/trivy/pkg/types"
+	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
+	"golang.org/x/crypto/ssh/terminal"
+	"golang.org/x/xerrors"
 )
 
 func ScanImage(imageName, filePath string) (map[string][]vulnerability.DetectedVulnerability, error) {
@@ -29,19 +21,15 @@ func ScanImage(imageName, filePath string) (map[string][]vulnerability.DetectedV
 	results := map[string][]vulnerability.DetectedVulnerability{}
 	ctx := context.Background()
 
-	image, err := registry.ParseImage(imageName)
-	if err != nil {
-		return nil, xerrors.Errorf("invalid image: %w", err)
-	}
-	if image.Tag == "latest" {
-		log.Logger.Warn("You should avoid using the :latest tag as it is cached. You need to specify '--clean' option when :latest image is changed")
-	}
-
 	var target string
 	var files extractor.FileMap
 	if imageName != "" {
 		target = imageName
-		files, err = analyzer.Analyze(ctx, imageName)
+		dockerOption, err := types.GetDockerOption()
+		if err != nil {
+			return nil, xerrors.Errorf("failed to get docker option: %w", err)
+		}
+		files, err = analyzer.Analyze(ctx, imageName, dockerOption)
 		if err != nil {
 			return nil, xerrors.Errorf("failed to analyze image: %w", err)
 		}
@@ -65,8 +53,10 @@ func ScanImage(imageName, filePath string) (map[string][]vulnerability.DetectedV
 		return nil, xerrors.Errorf("failed to scan image: %w", err)
 
 	}
-	imageDetail := fmt.Sprintf("%s (%s %s)", target, osFamily, osVersion)
-	results[imageDetail] = osVulns
+	if osFamily != "" {
+		imageDetail := fmt.Sprintf("%s (%s %s)", target, osFamily, osVersion)
+		results[imageDetail] = osVulns
+	}
 
 	libVulns, err := library.Scan(files)
 	if err != nil {

pkg/scanner/utils/utils.go

@@ -29,12 +29,21 @@ func MatchVersions(currentVersion *version.Version, rangeVersions []string) bool
 }
 
 func FormatVersion(pkg analyzer.Package) string {
-	v := pkg.Version
-	if pkg.Release != "" {
-		v = fmt.Sprintf("%s-%s", v, pkg.Release)
+	return formatVersion(pkg.Epoch, pkg.Version, pkg.Release)
+}
+
+func FormatSrcVersion(pkg analyzer.Package) string {
+	return formatVersion(pkg.SrcEpoch, pkg.SrcVersion, pkg.SrcRelease)
+}
+
+func formatVersion(epoch int, version, release string) string {
+	v := version
+	if release != "" {
+		v = fmt.Sprintf("%s-%s", v, release)
 	}
-	if pkg.Epoch != 0 {
-		v = fmt.Sprintf("%d:%s", pkg.Epoch, v)
+	if epoch != 0 {
+		v = fmt.Sprintf("%d:%s", epoch, v)
 	}
 	return v
+
 }

pkg/types/dockerConf.go

@@ -0,0 +1,32 @@
+package types
+
+import (
+	"time"
+
+	"github.com/caarlos0/env/v6"
+	"github.com/knqyf263/fanal/types"
+)
+
+type DockerConfig struct {
+	AuthURL  string        `env:"TRIVY_AUTH_URL"`
+	UserName string        `env:"TRIVY_USERNAME"`
+	Password string        `env:"TRIVY_PASSWORD"`
+	Timeout  time.Duration `env:"TRIVY_TIMEOUT_SEC" envDefault:"60s"`
+	Insecure bool          `env:"TRIVY_INSECURE" envDefault:"true"`
+	NonSSL   bool          `env:"TRIVY_NON_SSL" envDefault:"false"`
+}
+
+func GetDockerOption() (types.DockerOption, error) {
+	cfg := DockerConfig{}
+	if err := env.Parse(&cfg); err != nil {
+		return types.DockerOption{}, err
+	}
+	return types.DockerOption{
+		AuthURL:  cfg.AuthURL,
+		UserName: cfg.UserName,
+		Password: cfg.Password,
+		Timeout:  cfg.Timeout,
+		Insecure: cfg.Insecure,
+		NonSSL:   cfg.NonSSL,
+	}, nil
+}

pkg/utils/utils.go

@@ -12,15 +12,24 @@ import (
 	"golang.org/x/xerrors"
 )
 
+var cacheDir string
+
 func CacheDir() string {
-	cacheDir, err := os.UserCacheDir()
-	if err != nil {
-		cacheDir = os.TempDir()
+	if cacheDir == "" {
+		var err error
+		cacheDir, err = os.UserCacheDir()
+		if err != nil {
+			cacheDir = os.TempDir()
+		}
 	}
 	dir := filepath.Join(cacheDir, "trivy")
 	return dir
 }
 
+func SetCacheDir(cd string) {
+	cacheDir = cd
+}
+
 func FileWalk(root string, targetFiles map[string]struct{}, walkFn func(r io.Reader, path string) error) error {
 	err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
 		if info.IsDir() {

pkg/vulnsrc/vulnerability/vulnerability.go

@@ -89,17 +89,16 @@ func getDetail(vulnID string) (Severity, string, string, []string) {
 
 func getSeverity(details map[string]Vulnerability) Severity {
 	for _, source := range sources {
-		d, ok := details[source]
-		if !ok {
+		switch d, ok := details[source]; {
+		case !ok:
 			continue
-		}
-		if d.CvssScore > 0 {
+		case d.CvssScore > 0:
 			return scoreToSeverity(d.CvssScore)
-		} else if d.CvssScoreV3 > 0 {
+		case d.CvssScoreV3 > 0:
 			return scoreToSeverity(d.CvssScoreV3)
-		} else if d.Severity != 0 {
+		case d.Severity != 0:
 			return d.Severity
-		} else if d.SeverityV3 != 0 {
+		case d.SeverityV3 != 0:
 			return d.SeverityV3
 		}
 	}
@@ -151,14 +150,16 @@ func getReferences(details map[string]Vulnerability) []string {
 }
 
 func scoreToSeverity(score float64) Severity {
-	if score >= 9.0 {
+	switch {
+	case score >= 9.0:
 		return SeverityCritical
-	} else if score >= 7.0 {
+	case score >= 7.0:
 		return SeverityHigh
-	} else if score >= 4.0 {
+	case score >= 4.0:
 		return SeverityMedium
-	} else if score > 0.0 {
+	case score > 0.0:
 		return SeverityLow
+	default:
+		return SeverityUnknown
 	}
-	return SeverityUnknown
 }

pkg/vulnsrc/vulnsrc.go

@@ -12,6 +12,7 @@ import (
 	"github.com/knqyf263/trivy/pkg/vulnsrc/nvd"
 	"github.com/knqyf263/trivy/pkg/vulnsrc/redhat"
 	"github.com/knqyf263/trivy/pkg/vulnsrc/ubuntu"
+	"github.com/knqyf263/trivy/pkg/vulnsrc/vulnerability"
 	"golang.org/x/xerrors"
 )
 
@@ -19,7 +20,29 @@ const (
 	repoURL = "https://github.com/knqyf263/vuln-list.git"
 )
 
-func Update() (err error) {
+type updateFunc func(dir string, updatedFiles map[string]struct{}) error
+
+var (
+	// UpdateList has list of update distributions
+	UpdateList []string
+	updateMap  = map[string]updateFunc{
+		vulnerability.Nvd:        nvd.Update,
+		vulnerability.Alpine:     alpine.Update,
+		vulnerability.RedHat:     redhat.Update,
+		vulnerability.Debian:     debian.Update,
+		vulnerability.DebianOVAL: debianoval.Update,
+		vulnerability.Ubuntu:     ubuntu.Update,
+	}
+)
+
+func init() {
+	UpdateList = make([]string, 0, len(updateMap))
+	for distribution := range updateMap {
+		UpdateList = append(UpdateList, distribution)
+	}
+}
+
+func Update(names []string) error {
 	log.Logger.Info("Updating vulnerability database...")
 
 	// Clone vuln-list repository
@@ -35,41 +58,15 @@ func Update() (err error) {
 		return nil
 	}
 
-	// Update NVD
-	log.Logger.Info("Updating NVD data...")
-	if err = nvd.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in NVD update: %w", err)
+	for _, distribution := range names {
+		updateFunc, ok := updateMap[distribution]
+		if !ok {
+			return xerrors.Errorf("%s does not supported yet", distribution)
+		}
+		log.Logger.Infof("Updating %s data...", distribution)
+		if err := updateFunc(dir, updatedFiles); err != nil {
+			return xerrors.Errorf("error in %s update: %w", distribution, err)
+		}
 	}
-
-	// Update Alpine OVAL
-	log.Logger.Info("Updating Alpine data...")
-	if err = alpine.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in Alpine OVAL update: %w", err)
-	}
-
-	//Update RedHat
-	log.Logger.Info("Updating RedHat data...")
-	if err = redhat.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in RedHat update: %w", err)
-	}
-
-	// Update Debian
-	log.Logger.Info("Updating Debian data...")
-	if err = debian.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in Debian update: %w", err)
-	}
-
-	// Update Debian OVAL
-	log.Logger.Info("Updating Debian OVAL data...")
-	if err = debianoval.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in Debian OVAL update: %w", err)
-	}
-
-	//Update Ubuntu
-	log.Logger.Info("Updating Ubuntu data...")
-	if err = ubuntu.Update(dir, updatedFiles); err != nil {
-		return xerrors.Errorf("error in Ubuntu update: %w", err)
-	}
-
 	return nil
 }