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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| * ZDNS Copyright 2022 Regents of the University of Michigan | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| * use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| * implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| */ | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "os" | ||
| "sync" | ||
|
|
||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| type FileInputHandler struct { | ||
| filepath string | ||
| } | ||
|
|
||
| func NewFileInputHandler(filepath string) *FileInputHandler { | ||
| return &FileInputHandler{ | ||
| filepath: filepath, | ||
| } | ||
| } | ||
|
|
||
| func (h *FileInputHandler) FeedChannel(in chan<- interface{}, wg *sync.WaitGroup) error { | ||
| defer close(in) | ||
| defer (*wg).Done() | ||
|
|
||
| var f *os.File | ||
| if h.filepath == "" || h.filepath == "-" { | ||
| f = os.Stdin | ||
| } else { | ||
| var err error | ||
| f, err = os.Open(h.filepath) | ||
| if err != nil { | ||
| log.Fatalf("unable to open input file: %v", err) | ||
| } | ||
| } | ||
| s := bufio.NewScanner(f) | ||
| for s.Scan() { | ||
| in <- s.Text() | ||
| } | ||
| if err := s.Err(); err != nil { | ||
| log.Fatalf("input unable to read file: %v", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| type FileOutputHandler struct { | ||
| filepath string | ||
| } | ||
|
|
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| func NewFileOutputHandler(filepath string) *FileOutputHandler { | ||
| return &FileOutputHandler{ | ||
| filepath: filepath, | ||
| } | ||
| } | ||
|
|
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| func (h *FileOutputHandler) WriteResults(results <-chan string, wg *sync.WaitGroup) error { | ||
| defer (*wg).Done() | ||
|
|
||
| var f *os.File | ||
| if h.filepath == "" || h.filepath == "-" { | ||
| f = os.Stdout | ||
| } else { | ||
| var err error | ||
| f, err = os.OpenFile(h.filepath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644) | ||
| if err != nil { | ||
| log.Fatalf("unable to open output file: %v", err) | ||
| } | ||
| defer f.Close() | ||
| } | ||
| for n := range results { | ||
| f.WriteString(n + "\n") | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /* | ||
| * ZDNS Copyright 2022 Regents of the University of Michigan | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| * use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| * implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| */ | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "io" | ||
| "sync" | ||
|
|
||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| type StreamInputHandler struct { | ||
| reader io.Reader | ||
| } | ||
|
|
||
| func NewStreamInputHandler(r io.Reader) *StreamInputHandler { | ||
| return &StreamInputHandler{ | ||
| reader: r, | ||
| } | ||
| } | ||
|
|
||
| func (h *StreamInputHandler) FeedChannel(in chan<- interface{}, wg *sync.WaitGroup) error { | ||
| defer close(in) | ||
| defer (*wg).Done() | ||
|
|
||
| s := bufio.NewScanner(h.reader) | ||
| for s.Scan() { | ||
| in <- s.Text() | ||
| } | ||
| if err := s.Err(); err != nil { | ||
| log.Fatalf("unable to read input stream: %v", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| type StreamOutputHandler struct { | ||
| writer io.Writer | ||
| } | ||
|
|
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| func NewStreamOutputHandler(w io.Writer) *StreamOutputHandler { | ||
| return &StreamOutputHandler{ | ||
| writer: w, | ||
| } | ||
| } | ||
|
|
||
| func (h *StreamOutputHandler) WriteResults(results <-chan string, wg *sync.WaitGroup) error { | ||
| defer (*wg).Done() | ||
| for n := range results { | ||
| io.WriteString(h.writer, n+"\n") | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| //go:build linux || darwin | ||
| // +build linux darwin | ||
|
|
||
| /* | ||
| * ZDNS Copyright 2020 Regents of the University of Michigan | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| * use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| * implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| */ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "syscall" | ||
|
|
||
| log "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
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| func ulimitCheck(maxOpenFiles uint64) { | ||
| var rLimit syscall.Rlimit | ||
| err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit) | ||
| if err != nil { | ||
| log.Fatal("Failed to fetch ulimit ", err) | ||
| } | ||
|
|
||
| if maxOpenFiles > rLimit.Cur { | ||
| log.Warn("Current nofile limit (", rLimit.Cur, ") lower than maximum connection count (", maxOpenFiles, "), trying to update.") | ||
|
|
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| rLimit.Max = maxOpenFiles | ||
| rLimit.Cur = maxOpenFiles | ||
| err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit) | ||
| if err != nil { | ||
| log.Fatal("Error setting nofile limit to ", rLimit.Cur, ": ", err) | ||
| } | ||
| log.Info("Updated nofile limit to ", rLimit.Cur) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| //go:build !linux && !darwin | ||
| // +build !linux,!darwin | ||
|
|
||
| /* | ||
| * ZDNS Copyright 2020 Regents of the University of Michigan | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not | ||
| * use this file except in compliance with the License. You may obtain a copy | ||
| * of the License at http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or | ||
| * implied. See the License for the specific language governing | ||
| * permissions and limitations under the License. | ||
| */ | ||
| package cmd | ||
|
|
||
| func ulimitCheck(maxOpenFiles uint64) { | ||
| // fallback for ulimit check on unsupported platform | ||
| } |
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