From 92c3256b7127b7a494d6f11a94e0ffebc0fc85a5 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Sun, 27 Feb 2022 05:02:05 -0500
Subject: add datadir and cmd/search.go

---
 cmd/search.go      | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 datadir/datadir.go | 48 ++++++++++++++++++++++++++++++++++
 2 files changed, 124 insertions(+)
 create mode 100644 cmd/search.go
 create mode 100644 datadir/datadir.go

diff --git a/cmd/search.go b/cmd/search.go
new file mode 100644
index 0000000..ba831df
--- /dev/null
+++ b/cmd/search.go
@@ -0,0 +1,76 @@
+package cmd
+
+import (
+  "context"
+  "encoding/json"
+  "github.com/pablotron/cvez/datadir"
+  "github.com/pablotron/cvez/dbstore"
+  "github.com/spf13/cobra"
+  "github.com/rs/zerolog"
+  "github.com/rs/zerolog/log"
+  "os"
+  "strings"
+  "time"
+)
+
+// Build query string.
+func getSearchQuery(args []string) string {
+  r := make([]string, len(args))
+
+  for i, v := range(args) {
+    r[i] = "\"" + strings.ReplaceAll(strings.ToLower(v), "\"", "\"\"") + "\""
+  }
+
+  return strings.Join(r, " AND ")
+}
+
+// Get database store.
+func getDb() dbstore.DbStore {
+  // build database path
+  dbPath, err := datadir.Join("cvez.db")
+  if err != nil {
+    log.Error().Err(err).Msg("Join")
+    os.Exit(-1)
+  }
+
+  // open database
+  db, err := dbstore.Open(dbPath)
+  if err != nil {
+    log.Error().Err(err).Msg("Open")
+    os.Exit(-1)
+  }
+
+  return db
+}
+
+var searchCmd = &cobra.Command{
+  Use:   "search",
+  Args:  cobra.MinimumNArgs(1),
+  Short: "Search CVEs.",
+  Long: `Common Vulnerability Enumeration (CVE) search.`,
+
+  Run: func(cmd *cobra.Command, args []string) {
+    ctx := context.Background()
+
+    // set global logging options
+    zerolog.TimeFieldFormat = time.RFC3339
+    zerolog.SetGlobalLevel(zerolog.InfoLevel)
+
+    // search for CVEs
+    rows, err := getDb().CveSearch(ctx, getSearchQuery(args))
+    if err != nil {
+      log.Error().Err(err).Msg("CveSearch")
+      os.Exit(-1)
+    }
+
+    // search for CVEs, write result
+    e := json.NewEncoder(os.Stdout)
+    if err := e.Encode(rows); err != nil {
+      log.Error().Err(err).Msg("Encode")
+    }
+  },
+}
+
+func init() {
+  rootCmd.AddCommand(searchCmd)
+}
diff --git a/datadir/datadir.go b/datadir/datadir.go
new file mode 100644
index 0000000..9019e5d
--- /dev/null
+++ b/datadir/datadir.go
@@ -0,0 +1,48 @@
+// data directory
+package datadir
+
+import (
+  "errors"
+  "io/fs"
+  "os"
+  "path/filepath"
+)
+
+// Get data directory path.
+func DataDir() (string, error) {
+  var dir string
+
+  // check environment
+  if val, ok := os.LookupEnv("CVEZ_DATA_DIR"); ok {
+    return val, nil
+  }
+
+  // get config dir
+  configDir, err := os.UserConfigDir()
+  if err != nil {
+    return dir, err
+  }
+
+  // build path to data directory in config dir
+  dir = filepath.Join(configDir, "cvez")
+  if _, err = os.Stat(dir); err != nil {
+    if errors.Is(err, fs.ErrNotExist) {
+      // create data directory
+      return dir, os.MkdirAll(dir, 0700)
+    } else {
+      // return error
+      return "", err
+    }
+  } else {
+    return dir, nil
+  }
+}
+
+// Build path to file in cvez data directory.
+func Join(args ...string) (string, error) {
+  if dir, err := DataDir(); err != nil {
+    return "", err
+  } else {
+    return filepath.Join(dir, filepath.Join(args...)), nil
+  }
+}
-- 
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