func testFindAllIndex(t *testing.T, tc *testCase, x *Index, rx *regexp.Regexp, n int) {
res := x.FindAllIndex(rx, n)
exp := rx.FindAllStringIndex(tc.source, n)
// check that the lengths match
if len(res) != len(exp) {
t.Errorf("test %q, FindAllIndex %q (n = %d): expected %d results; got %d", tc.name, rx, n, len(exp), len(res))
}
// if n >= 0 the number of results is limited --- unless n >= all results,
// we may obtain different positions from the Index and from regexp (because
// Index may not find the results in the same order as regexp) => in general
// we cannot simply check that the res and exp lists are equal
// check that each result is in fact a correct match and the result is sorted
for i, r := range res {
if r[0] < 0 || r[0] > r[1] || len(tc.source) < r[1] {
t.Errorf("test %q, FindAllIndex %q, result %d (n == %d): illegal match [%d, %d]", tc.name, rx, i, n, r[0], r[1])
} else if !rx.MatchString(tc.source[r[0]:r[1]]) {
t.Errorf("test %q, FindAllIndex %q, result %d (n = %d): [%d, %d] not a match", tc.name, rx, i, n, r[0], r[1])
}
}
if n < 0 {
// all results computed - sorted res and exp must be equal
for i, r := range res {
e := exp[i]
if r[0] != e[0] || r[1] != e[1] {
t.Errorf("test %q, FindAllIndex %q, result %d: expected match [%d, %d]; got [%d, %d]",
tc.name, rx, i, e[0], e[1], r[0], r[1])
}
}
}
}
func (f *file) Symbols(r *regexp.Regexp, addr uint64) ([]*plugin.Sym, error) {
if f.sym == nil {
sym, err := f.file.Symbols()
if err != nil {
return nil, err
}
f.sym = sym
}
var out []*plugin.Sym
for _, s := range f.sym {
// Ignore a symbol with address 0 and size 0.
// An ELF STT_FILE symbol will look like that.
if s.Addr == 0 && s.Size == 0 {
continue
}
if (r == nil || r.MatchString(s.Name)) && (addr == 0 || s.Addr <= addr && addr < s.Addr+uint64(s.Size)) {
out = append(out, &plugin.Sym{
Name: []string{s.Name},
File: f.name,
Start: s.Addr,
End: s.Addr + uint64(s.Size) - 1,
})
}
}
return out, nil
}
// list is a subcommand to list up snippets.
// It just finds snippet files in the snippet directory and listed them.
func list(c *cli.Context) {
var pattern *regexp.Regexp
var err error
query := c.Args().First()
if len(query) > 0 {
pattern, err = regexp.Compile(fmt.Sprintf(".*%s.*", query))
if err != nil {
log.Fatal(err)
}
}
err = filepath.Walk(
conf.SnippetDirectory,
func(path string, info os.FileInfo, err error) error {
if info.IsDir() {
return nil
}
rel, err := filepath.Rel(conf.SnippetDirectory, path)
if pattern != nil {
if pattern.MatchString(rel) {
fmt.Println(rel)
}
return nil
}
fmt.Println(rel)
return nil
},
)
if err != nil {
log.Fatal(err)
}
}
func checkAuth(client <-chan string, result chan<- bool) {
var (
attempt int
data string
pass *regexp.Regexp
)
pass = regexp.MustCompile(`^(?i)PASS(?-i) ` + opt.Password + `\r?\n?$`)
attempt = 0
for data = range client {
if attempt > AuthAttempts {
log.Print("Authentication bad, tearing down.")
result <- false
return
}
if pass.MatchString(data) {
log.Print("Authentication good, open sesame.")
result <- true
return
}
attempt++
}
}
func parseNetDevStats(r io.Reader, ignore *regexp.Regexp) (map[string]map[string]string, error) {
scanner := bufio.NewScanner(r)
scanner.Scan() // skip first header
scanner.Scan()
parts := strings.Split(string(scanner.Text()), "|")
if len(parts) != 3 { // interface + receive + transmit
return nil, fmt.Errorf("invalid header line in net/dev: %s",
scanner.Text())
}
header := strings.Fields(parts[1])
netDev := map[string]map[string]string{}
for scanner.Scan() {
line := strings.TrimLeft(string(scanner.Text()), " ")
parts := procNetDevFieldSep.Split(line, -1)
if len(parts) != 2*len(header)+1 {
return nil, fmt.Errorf("invalid line in net/dev: %s", scanner.Text())
}
dev := parts[0][:len(parts[0])]
if ignore.MatchString(dev) {
log.Debugf("Ignoring device: %s", dev)
continue
}
netDev[dev] = map[string]string{}
for i, v := range header {
netDev[dev]["receive_"+v] = parts[i+1]
netDev[dev]["transmit_"+v] = parts[i+1+len(header)]
}
}
return netDev, scanner.Err()
}
// PruneFrom removes all nodes beneath the lowest node matching dropRx, not including itself.
//
// Please see the example below to understand this method as well as
// the difference from Prune method.
//
// A sample contains Location of [A,B,C,B,D] where D is the top frame and there's no inline.
//
// PruneFrom(A) returns [A,B,C,B,D] because there's no node beneath A.
// Prune(A, nil) returns [B,C,B,D] by removing A itself.
//
// PruneFrom(B) returns [B,C,B,D] by removing all nodes beneath the first B when scanning from the bottom.
// Prune(B, nil) returns [D] because a matching node is found by scanning from the root.
func (p *Profile) PruneFrom(dropRx *regexp.Regexp) {
pruneBeneath := make(map[uint64]bool)
for _, loc := range p.Location {
for i := 0; i < len(loc.Line); i++ {
if fn := loc.Line[i].Function; fn != nil && fn.Name != "" {
// Account for leading '.' on the PPC ELF v1 ABI.
funcName := strings.TrimPrefix(fn.Name, ".")
// Account for unsimplified names -- trim starting from the first '('.
if index := strings.Index(funcName, "("); index > 0 {
funcName = funcName[:index]
}
if dropRx.MatchString(funcName) {
// Found matching entry to prune.
pruneBeneath[loc.ID] = true
loc.Line = loc.Line[i:]
break
}
}
}
}
// Prune locs from each Sample
for _, sample := range p.Sample {
// Scan from the bottom leaf to the root to find the prune location.
for i, loc := range sample.Location {
if pruneBeneath[loc.ID] {
sample.Location = sample.Location[i:]
break
}
}
}
}
func getSuffixMatches(req *http.Request, pattern *regexp.Regexp) bool {
if httputil.IsGet(req) {
suffix := httputil.PathSuffix(req)
return pattern.MatchString(suffix)
}
return false
}
func TestIntegration(t *testing.T) {
flag.Parse()
bleve.Config.DefaultIndexType = *indexType
t.Logf("using index type %s", *indexType)
var err error
var datasetRegexp *regexp.Regexp
if *dataset != "" {
datasetRegexp, err = regexp.Compile(*dataset)
if err != nil {
t.Fatal(err)
}
}
fis, err := ioutil.ReadDir("tests")
if err != nil {
t.Fatal(err)
}
for _, fi := range fis {
if datasetRegexp != nil {
if !datasetRegexp.MatchString(fi.Name()) {
continue
}
}
if fi.IsDir() {
t.Logf("Running test: %s", fi.Name())
runTestDir(t, "tests"+string(filepath.Separator)+fi.Name(), fi.Name())
}
}
}
func validateField(name, cont string, whitelist *regexp.Regexp) error {
if !whitelist.MatchString(cont) {
return fmt.Errorf("app description field '%s' contains illegal %q (legal: '%s')", name, cont, whitelist)
}
return nil
}
func (rules *Rules) matches(u string, options map[string]interface{}, generalRe *re.Regexp, domainRequiredRules map[string][]*Rule, rulesWithOptions []*Rule) bool {
if generalRe != nil && generalRe.MatchString(u) {
return true
}
rls := []*Rule{}
isrcDomain, ok := options["domain"]
srcDomain, ok2 := isrcDomain.(string)
if ok && ok2 && len(domainRequiredRules) > 0 {
for _, domain := range DomainVariants(srcDomain) {
if vs, ok := domainRequiredRules[domain]; ok {
rls = append(rls, vs...)
}
}
}
rls = append(rls, rulesWithOptions...)
if !rules.opt.CheckUnsupportedRules {
for _, rule := range rls {
if rule.MatchingSupported(options) {
if rule.MatchURL(u, options) {
return true
}
}
}
}
return false
}
// Err ensures the error satisfies the given regular expression.
func Err(t Fataler, err error, re *regexp.Regexp, a ...interface{}) {
if err == nil && re == nil {
return
}
if err == nil && re != nil {
fatal(cond{
Fataler: t,
Format: `expected error: "%s" but got a nil error`,
FormatArgs: []interface{}{re},
Extra: a,
})
return
}
if err != nil && re == nil {
fatal(cond{
Fataler: t,
Format: `unexpected error: %s`,
FormatArgs: []interface{}{err},
Extra: a,
})
return
}
if !re.MatchString(err.Error()) {
fatal(cond{
Fataler: t,
Format: `expected error: "%s" but got "%s"`,
FormatArgs: []interface{}{re, err},
Extra: a,
})
}
}
func (fc *AfmFontCollection) Select(family, weight, style string, ranges []string) (fontMetrics FontMetrics, err error) {
if len(ranges) > 0 {
return nil, errors.New("Named ranges not supported for Type1 fonts.")
}
var re *regexp.Regexp
if re, err = makeFontSelectRegexp(family, weight, style); err != nil {
return
}
if fc.Fonts == nil {
fc.Fonts = make(map[string]*afm.Font)
}
for _, f := range fc.FontInfos {
if re.MatchString(f.PostScriptName()) {
font := fc.Fonts[f.Filename]
if font == nil {
font, err = afm.LoadFont(f.Filename)
fc.Fonts[f.Filename] = font
}
fontMetrics = font
return
}
}
err = fmt.Errorf("Font '%s %s %s' not found", family, weight, style)
return
}
// Given an IP address and a port number, this function creates a transport address.
//
// INPUT
// - in_ip: IP address.
// - in_port: port number.
//
// OUTPUT
// - The transport address.
// - The error flag.
func MakeTransportAddress(in_ip string, in_port int) (string, error) {
var ipv4, ipv6 *regexp.Regexp
var err error
ipv4, err = regexp.Compile("^\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}$")
if nil != err {
panic("Internal error.")
}
ipv6, err = regexp.Compile("^[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}$")
if nil != err {
panic("Internal error.")
}
// Is it IPV4?
if ipv4.MatchString(in_ip) {
return fmt.Sprintf("%s:%d", in_ip, in_port), nil
}
// Is it IPV6?
if ipv6.MatchString(in_ip) {
return fmt.Sprintf("[%s]:%d", in_ip, in_port), nil
}
return "", errors.New(fmt.Sprintf("Invalid IP address \"%s\"!", in_ip))
}
func newWatcher(path string, include, exclude *regexp.Regexp) (*watcher, error) {
events := make(chan notify.EventInfo, 10)
ops := make(chan Operation, 10)
if err := notify.Watch(path+"/...", events, notify.All); err != nil {
return nil, err
}
go func() {
for ev := range events {
if include.MatchString(ev.Path()) == false {
debug(fmt.Sprintf("Skipping: does not match include path: %s", ev.Path()))
continue
}
if exclude.MatchString(ev.Path()) == true {
debug(fmt.Sprintf("Skipping: does match exclude path: %s", ev.Path()))
continue
}
ops <- Operation{
Path: ev.Path(),
EventInfo: ev,
}
}
}()
return &watcher{ops: ops, events: events}, nil
}
func re(ctx *ScalarContext, nArg int) {
ad := ctx.GetAuxData(0)
var re *regexp.Regexp
if ad == nil {
reused = false
//println("Compile")
var err error
re, err = regexp.Compile(ctx.Text(0))
if err != nil {
ctx.ResultError(err.Error())
return
}
ctx.SetAuxData(0, re)
} else {
reused = true
//println("Reuse")
var ok bool
if re, ok = ad.(*regexp.Regexp); !ok {
println(ad)
ctx.ResultError("AuxData not a regexp")
return
}
}
m := re.MatchString(ctx.Text(1))
ctx.ResultBool(m)
}
func getSuitableAddrs(addrs []*address, v4, v6, linklocal, loopback bool, re *regexp.Regexp, mask *net.IPNet) ([]*address, error) {
ret := []*address{}
for _, a := range addrs {
if a.IsLoopback() && !loopback {
continue
}
if !v6 && a.IsV6() {
continue
}
if !v4 && a.IsV4() {
continue
}
if !linklocal && a.IsLinkLocalUnicast() {
continue
}
if !loopback && a.IsLoopback() {
continue
}
if re != nil {
if !re.MatchString(a.String()) {
continue
}
}
if mask != nil {
if !mask.Contains(a.IP) {
continue
}
}
ret = append(ret, a)
}
if len(ret) == 0 {
return nil, errors.New("unable to find suitable address")
}
return ret, nil
}
func search(c chan *Trial, target *regexp.Regexp) {
sequence := uint32(0)
batch := make([]byte, 1024*4)
for {
_, err := rand.Read(batch)
checkErr(err)
for i := 0; i < len(batch)-16; i++ {
trial := &Trial{
Seed: make([]byte, 16),
}
copy(trial.Seed, batch[i:])
if *ed25519key {
trial.Key, err = crypto.NewEd25519Key(trial.Seed)
} else {
trial.Key, err = crypto.NewECDSAKey(trial.Seed)
}
checkErr(err)
if *ed25519key {
trial.Id, err = crypto.AccountId(trial.Key, nil)
} else {
trial.Id, err = crypto.AccountId(trial.Key, &sequence)
}
checkErr(err)
atomic.AddUint64(&count, 1)
if target.MatchString(trial.Id.String()) {
c <- trial
}
}
}
}
func reduceWithRepoFilters(c *clif.Command, allRepos []*common.Info) ([]*common.Info, error) {
// determine repo name pattern
includeRx := regexp.MustCompile(`.`)
if pattern := c.Option("include").String(); pattern != "" {
var err error
if includeRx, err = regexp.Compile(pattern); err != nil {
return nil, fmt.Errorf("Failed to compile include pattern: %s", err)
}
}
var excludeRx *regexp.Regexp
if pattern := c.Option("exclude").String(); pattern != "" {
var err error
if excludeRx, err = regexp.Compile(pattern); err != nil {
return nil, fmt.Errorf("Failed to compile exclude pattern: %s", err)
}
}
repos := make([]*common.Info, 0)
for _, repo := range allRepos {
if !includeRx.MatchString(repo.Name) {
Debug(DEBUG3, "Exclude repo %s since not matching include", repo.Name)
continue
} else if excludeRx != nil && excludeRx.MatchString(repo.Name) {
Debug(DEBUG3, "Exclude repo %s since match exclude", repo.Name)
continue
}
repos = append(repos, repo)
}
return repos, nil
}
//broker.handleMessage() gets messages from broker.This() and handles them according
// to the user-provided plugins currently loaded.
func (b *Broker) handleMessage(thingy map[string]interface{}) {
if b.cbIndex[M] == nil {
return
}
message := new(Event)
jthingy, _ := json.Marshal(thingy)
json.Unmarshal(jthingy, message)
message.Broker = b
botNamePat := fmt.Sprintf(`^(?:@?%s[:,]?)\s+(?:${1})`, b.Config.Name)
for _, cbInterface := range b.cbIndex[M] {
callback := cbInterface.(*MessageCallback)
Logger.Debug(`Broker:: checking callback: `, callback.ID)
if callback.SlackChan != `` {
if callback.SlackChan != message.Channel {
Logger.Debug(`Broker:: dropping message because chan mismatch: `, callback.ID)
continue //skip this message because it doesn't match the cb's channel filter
} else {
Logger.Debug(`Broker:: channel filter match for: `, callback.ID)
}
}
var r *regexp.Regexp
if callback.Respond {
r = regexp.MustCompile(strings.Replace(botNamePat, "${1}", callback.Pattern, 1))
} else {
r = regexp.MustCompile(callback.Pattern)
}
if r.MatchString(message.Text) {
match := r.FindAllStringSubmatch(message.Text, -1)[0]
Logger.Debug(`Broker:: firing callback: `, callback.ID)
callback.Chan <- PatternMatch{Event: message, Match: match}
}
}
}
// Expand '~'-based homedif from the given path
func ExpandHomedir(s string) (string, error) {
const (
slash = string(os.PathSeparator)
re1 = "~%s" // regex: /~\//
re2 = "~([\\w\\-]+)%s" // regex: /~([\w\-]+)\//
)
var (
err error
re *regexp.Regexp
u *user.User
rv string
)
if strings.HasPrefix(s, fmt.Sprintf(re1, slash)) {
u, _ = user.Current()
rv = fmt.Sprintf("%s", u.HomeDir+s[1:])
err = nil
} else if re = regexp.MustCompile(fmt.Sprintf(re2, slash)); re.MatchString(s) {
uname := re.FindStringSubmatch(s)[0]
uname = uname[1 : len(uname)-1]
if u, _ = user.Lookup(uname); u == nil {
rv = s
err = nil
} else {
rv = u.HomeDir + slash + strings.Join(strings.Split(s, slash)[1:], slash)
err = nil
}
} else if err != nil {
rv = s
} else {
rv = s
err = nil
}
return rv, err
}
func TestMatchResourceAttr(name, key string, r *regexp.Regexp) TestCheckFunc {
return func(s *terraform.State) error {
ms := s.RootModule()
rs, ok := ms.Resources[name]
if !ok {
return fmt.Errorf("Not found: %s", name)
}
is := rs.Primary
if is == nil {
return fmt.Errorf("No primary instance: %s", name)
}
if !r.MatchString(is.Attributes[key]) {
return fmt.Errorf(
"%s: Attribute '%s' didn't match %q, got %#v",
name,
key,
r.String(),
is.Attributes[key])
}
return nil
}
}
func GetParamRegexp(r *http.Request, param string, re *regexp.Regexp) (string, error) {
s := GetParam(r, param)
if !re.MatchString(s) {
return "", fmt.Errorf(param, "Did not match regular expression %v", re.String())
}
return s, nil
}
// RequireHeader requires a request header to match a value pattern. If the
// header is missing or does not match then the failureStatus is the response
// (e.g. http.StatusUnauthorized). If pathPattern is nil then any path is
// included. If requiredHeaderValue is nil then any value is accepted so long as
// the header is non-empty.
func RequireHeader(
pathPattern *regexp.Regexp,
requiredHeaderName string,
requiredHeaderValue *regexp.Regexp,
failureStatus int) goa.Middleware {
return func(h goa.Handler) goa.Handler {
return func(ctx *goa.Context) (err error) {
if pathPattern == nil || pathPattern.MatchString(ctx.Request().URL.Path) {
matched := false
header := ctx.Request().Header
headerValue := header.Get(requiredHeaderName)
if len(headerValue) > 0 {
if requiredHeaderValue == nil {
matched = true
} else {
matched = requiredHeaderValue.MatchString(headerValue)
}
}
if matched {
err = h(ctx)
} else {
err = ctx.RespondBytes(failureStatus, []byte(http.StatusText(failureStatus)))
}
} else {
err = h(ctx)
}
return
}
}
}
// FIXME: too much magic, just do explicit validation of the few
// fields we have
// verifyStructStringsAgainstWhitelist takes a struct and ensures that
// the given whitelist regexp matches all string fields of the struct
func verifyStructStringsAgainstWhitelist(s interface{}, whitelist *regexp.Regexp) error {
// check all members of the services struct against our whitelist
t := reflect.TypeOf(s)
v := reflect.ValueOf(s)
for i := 0; i < t.NumField(); i++ {
// PkgPath means its a unexported field and we can ignore it
if t.Field(i).PkgPath != "" {
continue
}
if v.Field(i).Kind() == reflect.Ptr {
vi := v.Field(i).Elem()
if vi.Kind() == reflect.Struct {
return verifyStructStringsAgainstWhitelist(vi.Interface(), whitelist)
}
}
if v.Field(i).Kind() == reflect.Struct {
vi := v.Field(i).Interface()
return verifyStructStringsAgainstWhitelist(vi, whitelist)
}
if v.Field(i).Kind() == reflect.String {
key := t.Field(i).Name
value := v.Field(i).String()
if !whitelist.MatchString(value) {
return &ErrStructIllegalContent{
Field: key,
Content: value,
Whitelist: whitelist.String(),
}
}
}
}
return nil
}
func (g unitGenerator) units(name string, types map[string]typeDef) ([]unitDef, error) {
var r *regexp.Regexp
var err error
t, ok := types[g.From]
if !ok {
return nil, fmt.Errorf(".from: '%s' not found in type lookup", g.From)
}
if g.Pattern != "" {
r, err = regexp.Compile(g.Pattern)
if err != nil {
return nil, fmt.Errorf(".pattern: %s", err.Error())
}
}
units := make([]unitDef, 0, len(t.Units))
for _, from := range t.Units {
if r != nil && !r.MatchString(from.Name) {
continue
}
units = append(units, unitDef{
Name: from.Name + g.NameSuffix,
NamePlural: from.NamePlural + g.NameSuffix,
Value: fmt.Sprintf("%s(%s)%s", name, from.Name, g.ValueSuffix),
})
}
return units, nil
}
func removeTimestampAndRequestIdFromLogLine(line, requestId string, requestIdRegexp *regexp.Regexp) (string, bool) {
sep := "\t"
parts := strings.Split(line, sep)
// assume timestamp is before request_id
for i, p := range parts {
if p == requestId {
hasTimeStamp := i > 0 && timestampRegexp.MatchString(parts[i-1])
if hasTimeStamp {
parts = append(parts[:i-1], parts[i+1:]...)
} else {
parts = append(parts[:i], parts[i+1:]...)
}
return strings.Join(parts, sep), true
}
}
//remove a log line from another request_id
for _, p := range parts {
if requestIdRegexp.MatchString(p) {
return "", false
}
}
return line, true
}
func (d *xtremIODriver) getLocalDeviceByID() (map[string]string, error) {
mapDiskByID := make(map[string]string)
diskIDPath := "/dev/disk/by-id"
files, err := ioutil.ReadDir(diskIDPath)
if err != nil {
return nil, err
}
var match1 *regexp.Regexp
var match2 string
if d.r.Config.XtremIODeviceMapper || d.r.Config.XtremIOMultipath {
match1, _ = regexp.Compile(`^dm-name-\w*$`)
match2 = `^dm-name-\d+`
} else {
match1, _ = regexp.Compile(`^wwn-0x\w*$`)
match2 = `^wwn-0x`
}
for _, f := range files {
if match1.MatchString(f.Name()) {
naaName := strings.Replace(f.Name(), match2, "", 1)
naaName = naaName[len(naaName)-16:]
devPath, _ := filepath.EvalSymlinks(fmt.Sprintf("%s/%s", diskIDPath, f.Name()))
mapDiskByID[naaName] = devPath
}
}
return mapDiskByID, nil
}
func getNetDevStats(ignore *regexp.Regexp) (map[string]map[string]string, error) {
netDev := map[string]map[string]string{}
var ifap, ifa *C.struct_ifaddrs
if C.getifaddrs(&ifap) == -1 {
return nil, errors.New("getifaddrs() failed")
}
defer C.freeifaddrs(ifap)
for ifa = ifap; ifa != nil; ifa = ifa.ifa_next {
if ifa.ifa_addr.sa_family == C.AF_LINK {
dev := C.GoString(ifa.ifa_name)
if ignore.MatchString(dev) {
log.Debugf("Ignoring device: %s", dev)
continue
}
devStats := map[string]string{}
data := (*C.struct_if_data)(ifa.ifa_data)
devStats["receive_packets"] = strconv.Itoa(int(data.ifi_ipackets))
devStats["transmit_packets"] = strconv.Itoa(int(data.ifi_opackets))
devStats["receive_errs"] = strconv.Itoa(int(data.ifi_ierrors))
devStats["transmit_errs"] = strconv.Itoa(int(data.ifi_oerrors))
devStats["receive_bytes"] = strconv.Itoa(int(data.ifi_ibytes))
devStats["transmit_bytes"] = strconv.Itoa(int(data.ifi_obytes))
devStats["receive_multicast"] = strconv.Itoa(int(data.ifi_imcasts))
devStats["transmit_multicast"] = strconv.Itoa(int(data.ifi_omcasts))
devStats["receive_drop"] = strconv.Itoa(int(data.ifi_iqdrops))
netDev[dev] = devStats
}
}
return netDev, nil
}
// RequireHeader requires a request header to match a value pattern. If the
// header is missing or does not match then the failureStatus is the response
// (e.g. http.StatusUnauthorized). If pathPattern is nil then any path is
// included. If requiredHeaderValue is nil then any value is accepted so long as
// the header is non-empty.
func RequireHeader(
service *goa.Service,
pathPattern *regexp.Regexp,
requiredHeaderName string,
requiredHeaderValue *regexp.Regexp,
failureStatus int) goa.Middleware {
return func(h goa.Handler) goa.Handler {
return func(ctx context.Context, rw http.ResponseWriter, req *http.Request) (err error) {
if pathPattern == nil || pathPattern.MatchString(req.URL.Path) {
matched := false
headerValue := req.Header.Get(requiredHeaderName)
if len(headerValue) > 0 {
if requiredHeaderValue == nil {
matched = true
} else {
matched = requiredHeaderValue.MatchString(headerValue)
}
}
if matched {
err = h(ctx, rw, req)
} else {
err = service.Send(ctx, failureStatus, http.StatusText(failureStatus))
}
} else {
err = h(ctx, rw, req)
}
return
}
}
}
func (m *Module) AddResponse(reg *regexp.Regexp, f func(*Response), permission permissions.Permission) error {
name := reg.String()
wrap := func(message *irc.Message) {
switch message.Command {
case "PRIVMSG", "NOTICE":
nick := message.Server.CurrentNick()
text := strings.Join(message.Arguments[1:], " ")
if message.Arguments[0] == nick { //direct privmsg
if reg.MatchString(strings.Trim(text, " ")) {
f(&Response{message, text, reg.FindStringSubmatch(text)})
}
} else { //asked from channel
current, err := regexp.Compile("^" + nick + "[ ,;:]")
if err != nil {
log.Error("Failed to compile nick regexp: ", err)
} else if current.MatchString(text) {
nl := len(nick) + 1
if len(text) > nl {
just_text := strings.Trim(text[nl:], " ")
if reg.MatchString(just_text) {
f(&Response{message, text, reg.FindStringSubmatch(just_text)})
}
}
}
}
}
}
if _, ok := m.handlers[name]; ok {
return errors.New("Response with same regexp already exist's!")
}
m.handlers[name] = m.connection.AddHandler(wrap, permission)
return nil
}