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package main
import (
"encoding/xml"
"fmt"
"io/ioutil"
"log"
"net/http"
"os"
"os/exec"
"path"
"strings"
"github.com/BurntSushi/toml"
"github.com/emersion/go-vcard"
"github.com/google/shlex"
"github.com/kyoh86/xdg"
)
func main() {
if err := run(); err != nil {
log.Fatal(err)
}
}
func run() error {
cfg, err := loadConfig()
if err != nil {
return err
}
book := &AddressBook{
Endpoint: cfg.Endpoint,
Username: cfg.Username,
}
pw, err := cfg.getPassword()
if err != nil {
return fmt.Errorf("could not get password: %w", err)
}
book.Password = pw
var c CardDAVClient
if len(os.Args) < 2 {
return fmt.Errorf("insufficient command line arguments")
}
resp, err := c.Report(book, os.Args[1])
if err != nil {
return fmt.Errorf("could not fetch completions: %w", err)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("could not read response: %w", err)
}
defer resp.Body.Close()
var ms Multistatus
if err := xml.Unmarshal(body, &ms); err != nil {
return fmt.Errorf("could not unmarshal XML: %w", err)
}
for _, resp := range ms.Responses {
decoder := vcard.NewDecoder(strings.NewReader(resp.Propstat.Prop.AddressData))
card, err := decoder.Decode()
if err != nil {
return fmt.Errorf("could not decode vcard: %w", err)
}
emails := card.Values(vcard.FieldEmail)
fn := card.Get(vcard.FieldFormattedName)
if len(emails) == 0 {
continue
}
if fn == nil {
fn = &vcard.Field{}
}
for _, email := range emails {
fmt.Printf("%s\t%s\n", email, fn.Value)
}
}
return nil
}
type config struct {
Endpoint string `toml:"endpoint"`
Username string `toml:"username"`
Password string `toml:"password"`
PasswordCmd string `toml:"password-cmd"`
}
func (c config) getPassword() (string, error) {
if c.PasswordCmd != "" {
cmd, err := c.getPasswordCmd()
if err != nil {
return "", err
}
stdout, err := cmd.StdoutPipe()
if err != nil {
return "", fmt.Errorf("could not set up stdout pipe: %w", err)
}
if err := cmd.Start(); err != nil {
return "", fmt.Errorf("could not start password-cmd: %w", err)
}
res, err := ioutil.ReadAll(stdout)
if err != nil {
return "", fmt.Errorf("could not read stdout: %w", err)
}
if err := cmd.Wait(); err != nil {
return "", fmt.Errorf("could not run password-cmd: %w", err)
}
return strings.TrimSpace(string(res)), nil
}
return c.Password, nil
}
func (c config) getPasswordCmd() (*exec.Cmd, error) {
parts, err := shlex.Split(c.PasswordCmd)
if err != nil {
return nil, fmt.Errorf("could not lex password-cmd: %w", err)
}
if len(parts) < 1 {
return nil, fmt.Errorf("empty command")
}
if len(parts) > 1 {
return exec.Command(parts[0], parts[1:]...), nil
}
return exec.Command(parts[0]), nil
}
func loadConfig() (*config, error) {
filename := path.Join(xdg.ConfigHome(), "cdc", "config")
var cfg config
if _, err := toml.DecodeFile(filename, &cfg); err != nil {
return nil, fmt.Errorf("could not read config: %w", err)
}
return &cfg, nil
}
type AddressBook struct {
Endpoint string
Username string
Password string
}
type CardDAVClient struct {
hc http.Client
}
func (c *CardDAVClient) Report(book *AddressBook, search string) (*http.Response, error) {
req, err := http.NewRequest("REPORT", book.Endpoint, strings.NewReader(`<?xml version="1.0" encoding="utf-8"?>
<C:addressbook-query xmlns:D="DAV:" xmlns:C="urn:ietf:params:xml:ns:carddav">
<D:prop>
<D:getetag />
<C:address-data>
<C:prop name="FN" />
<C:prop name="EMAIL" />
</C:address-data>
</D:prop>
<C:filter test="anyof">
<C:prop-filter name="EMAIL">
<C:text-match collation="i;unicode-casemap" match-type="contains">`+search+`</C:text-match>
</C:prop-filter>
<C:prop-filter name="FN">
<C:text-match collation="i;unicode-casemap" match-type="contains">`+search+`</C:text-match>
</C:prop-filter>
</C:filter>
</C:addressbook-query>`))
if err != nil {
return nil, err
}
req.Header.Add("Depth", "1")
req.Header.Add("Content-Type", "text/xml; charset=\"utf-8\"")
if book.Username != "" || book.Password != "" {
req.SetBasicAuth(book.Username, book.Password)
}
return c.hc.Do(req)
}
type Multistatus struct {
Responses []Response `xml:"response"`
}
type Response struct {
HREF string `xml:"href"`
Propstat Propstat `xml:"propstat"`
}
type Propstat struct {
Prop Prop `xml:"prop"`
}
type Prop struct {
GetETag string `xml:"getetag"`
AddressData string `xml:"address-data"`
}
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