Added option to rebuild the complete calendar

README.md

@@ -41,11 +41,35 @@ A config file named `calanonsync.json` is opened from the working directory. It
     "Password": ""
   },
   "Anonymize": {
-    "Title": "#Work"
+    "Title": {
+      "ReplaceWith": "#Work",
+      "Whitelist": [
+        "Something"
+      ]
+    }
   }
 }
 ```
 
 Both passwords are optional. If they are left blank, CalAnonSync will prompt for the password upon startup. (Recommended for security reasons!)
 
-The CalDAV URL should point to the URL of a dedicated calendar. Beware that CalAnonSync will remove **all** events from that calendar that are not known to Exchange.
+The CalDAV URL should point to the URL of a dedicated calendar. Beware that CalAnonSync will remove **all** events from that calendar that are not known to Exchange.
+
+### Whitelist
+
+If words (or phrases) are whitelisted, matches within the title for these words (or phrases) will be used as the
+new title instead of the replacement. The order of these matches within the original title is kept, all non matching
+parts of the title are simply stripped.
+
+### Encryption
+
+If you want to automate the sync process your probably have not much of a choice but storing the passwords
+in the config file. Since plaintext passwords are always a big risk, CalAnonSync at least provides a simple
+layer of eavesdropping security.
+
+Using `calanonsync settings encrypt` you can encrypt all passwords in the config file. With `calanonsync settings decrypt`
+you can revert that process.
+
+Beware, that the encryption key is simply stored in a file alongside the config so it is really easy to decrypt.
+It doesn't provide any security against a real attack and is only meant to prevent someone from getting access
+to the password by looking over your shoulder.

build.go

@@ -3,23 +3,37 @@
 package main
 
 import (
+	"flag"
 	"os"
 	"os/exec"
 	"strings"
 )
 
+var reproducible = flag.Bool("r", false, "If set, the build will remove local directories from the debug infos.")
+
 func main() {
+	flag.Parse()
+
 	env := os.Environ()
 	wd, err := os.Getwd()
 	if err != nil {
 		panic(err)
 	}
-	env = append(env, "GOPATH="+wd)
 
-	args := []string{"build"}
+	env = append(env, "GOPATH="+wd, "CGO_ENABLED=0")
 
-	if len(os.Args) == 2 {
-		target := os.Args[1]
+	args := []string{"build", "-ldflags=-s -w"}
+
+	if *reproducible {
+		args = append(args,
+			"-asmflags=all=-trimpath="+wd,
+			"-gcflags=all=-trimpath="+wd,
+			"-a",
+		)
+	}
+
+	if len(flag.Args()) == 1 {
+		target := flag.Arg(0)
 		targetParts := strings.Split(target, "/")
 		if len(targetParts) != 2 {
 			println("Invalid target specification. Example: windows/386")

src/calanonsync/Gopkg.lock

@@ -1,15 +1,6 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
-[[projects]]
-  branch = "master"
-  name = "github.com/ThomsonReutersEikon/go-ntlm"
-  packages = [
-    "ntlm",
-    "ntlm/md4"
-  ]
-  revision = "2a7c173f9e18233a4ae29891da6a0a63637e2d8d"
-
 [[projects]]
   name = "github.com/inconshreveable/mousetrap"
   packages = ["."]
@@ -28,12 +19,6 @@
   revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
   version = "v1.0.0"
 
-[[projects]]
-  branch = "master"
-  name = "github.com/vadimi/go-http-ntlm"
-  packages = ["."]
-  revision = "bc5a8d8d91a12dd386d3fa1019abb8bb681bdd41"
-
 [[projects]]
   branch = "master"
   name = "golang.org/x/crypto"
@@ -52,6 +37,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "8a1421bb063ff7faff2c4276042f954d7965c60c6a51afc95b658ac721cfcea0"
+  inputs-digest = "d2f5b5a67e95e173cd0d93a24576cdc1e5384e2bc0246f8cbed88838514b8ec0"
   solver-name = "gps-cdcl"
   solver-version = 1

src/calanonsync/Gopkg.toml

@@ -24,6 +24,7 @@
 #   go-tests = true
 #   unused-packages = true
 
+ignored = ["github.com/vadimi/go-http-ntlm"]
 
 [prune]
   go-tests = true
@@ -33,14 +34,6 @@
   branch = "master"
   name = "golang.org/x/crypto"
 
-[[constraint]]
-  branch = "master"
-  name = "github.com/vadimi/go-http-ntlm"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/Azure/go-ntlmssp"
-
 [[constraint]]
   name = "github.com/spf13/cobra"
   version = "0.0.2"

src/calanonsync/calanonsync.go

@@ -8,12 +8,17 @@ import (
 	"time"
 )
 
+var syncSettings = struct {
+	rebuild bool
+}{}
+
 func main() {
 	rootCmd := &cobra.Command{
 		Use:   "calanonsync",
 		Short: "Synchronize a calendar from EWS to CalDAV by event time and an anonymized title only.",
 		Run:   runSynchronization,
 	}
+	rootCmd.Flags().BoolVar(&syncSettings.rebuild, "rebuild", false, "Rebuild all calendar items, no matter if they already exist.")
 
 	rootCmd.AddCommand(InitSettingsCmd())
 
@@ -66,6 +71,13 @@ func runSynchronization(cmd *cobra.Command, args []string) {
 	for uid, calDavItem := range calDavItemMap {
 		if ewsItem, ok := relevantEWSItems[uid]; ok {
 			// Good, so we still know the item at least.
+
+			// If we want a full rebuild, we can skip this step
+			// since we will create new items anyway.
+			if syncSettings.rebuild {
+				continue
+			}
+
 			if !ewsItem.Start.Equal(calDavItem.Start()) ||
 				!ewsItem.End.Equal(calDavItem.End()) {
 
@@ -92,9 +104,9 @@ func runSynchronization(cmd *cobra.Command, args []string) {
 		}
 	}
 
-	// Find items we don't know so far and create them.
+	// Find items we don't know so far and create them. Also recreate them if we want to rebuild all.
 	for uid, ewsItem := range relevantEWSItems {
-		if _, ok := calDavItemMap[uid]; !ok {
+		if _, ok := calDavItemMap[uid]; !ok || syncSettings.rebuild {
 			title := s.Anonymize.Title.Apply(ewsItem.Subject)
 			ical := CreateICal(ewsItem.Hash(), title, ewsItem.Start, ewsItem.End, ewsItem.IsAllDayEvent)
 			calDavItem := CalDAVItem{HRef: uid + ".ics", ICal: ical}

src/calanonsync/settings.go

@@ -131,7 +131,13 @@ over-the-shoulder "attacks".`,
 		Run:   runSettingsDecryption,
 	}
 
-	settingsCmd.AddCommand(encryptCmd, decryptCmd)
+	initCmd := &cobra.Command{
+		Use:   "init",
+		Short: "Initialize an empty but valid settings file.",
+		Run:   runSettingsInit,
+	}
+
+	settingsCmd.AddCommand(encryptCmd, decryptCmd, initCmd)
 	return settingsCmd
 }
 
@@ -225,6 +231,30 @@ func runSettingsDecryption(cmd *cobra.Command, args []string) {
 	log.Println("Settings decrypted")
 }
 
+func runSettingsInit(cmd *cobra.Command, args []string) {
+	if _, err := os.Stat(settingsName); err == nil || os.IsExist(err) {
+		log.Fatalln("You already have a settings file! Remove that first if you really want a new blank one!")
+	}
+
+	s := Settings{}
+	s.Anonymize.Title = &StringAnonSettings{ReplaceWith: "Replacement", Whitelist: []string{}}
+
+	// Rewrite the settings file.
+	f, err := os.OpenFile(settingsName, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0600)
+	if err != nil {
+		log.Fatalf("Could not rewrite settings: %s\n", err)
+	}
+	defer f.Close()
+	e := json.NewEncoder(f)
+	e.SetIndent("", "  ")
+	err = e.Encode(&s)
+	if err != nil {
+		panic(err)
+	}
+
+	log.Println("Blank settings have been created.")
+}
+
 // Apply the anonymization rule to the given string, returning the
 // anonymized version.
 // If the anonymization is nil or empty, the original string will