diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..f136b94 --- /dev/null +++ b/.gitignore @@ -0,0 +1,10 @@ +.idea +\#* +.\#* + +vendor/ +coverage.html +coverage.out +dist/ + +check_sms3status \ No newline at end of file diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000..93fc8a1 --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,60 @@ +version: "2" +run: + tests: false +linters: + default: all + enable: + - wsl_v5 + - gomodguard_v2 + disable: + - wsl + - gomodguard + - cyclop + - depguard + - err113 + - exhaustruct + - forbidigo + - forcetypeassert + - gochecknoglobals + - gochecknoinits + - godot + - godox + - lll + - mnd + - musttag + - nakedret + - nlreturn + - nolintlint + - nonamedreturns + - tagliatelle + - varnamelen + - wrapcheck + - funlen + settings: + wsl_v5: + allow-first-in-block: true + allow-whole-block: true + branch-max-lines: 2 + disable: + - err + exclusions: + generated: lax + presets: + - comments + - common-false-positives + - legacy + - std-error-handling + paths: + - third_party$ + - builtin$ + - examples$ +formatters: + enable: + - gofmt + - goimports + exclusions: + generated: lax + paths: + - third_party$ + - builtin$ + - examples$ diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..e72bfdd --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. \ No newline at end of file diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..a2fb784 --- /dev/null +++ b/Makefile @@ -0,0 +1,13 @@ +.PHONY: test coverage lint vet + +build: + CGO_ENABLED=0 go build +lint: + go fmt $(go list ./... | grep -v /vendor/) +vet: + go vet $(go list ./... | grep -v /vendor/) +test: + go test -v -cover ./... +coverage: + go test -v -cover -coverprofile=coverage.out ./... &&\ + go tool cover -html=coverage.out -o coverage.html diff --git a/README.md b/README.md index 44f49d3..2a384b3 100644 --- a/README.md +++ b/README.md @@ -1,36 +1,31 @@ -check_sms3status -================ +# check_sms3status -This plugin checks the status of an SMS modem using the regular_run functionality -provided in smstools3 +A check plugin for SMS modem using the regular_run functionality provided by [smstools3](https://smstools3.kekekasvi.com/) -It does not directly access the modem, but instead reads a status file generated -by smstools3. +It does not directly access the modem, instead it reads the status file generated by smstools3. -In order to work the following options need to be set in smsd.conf +In order to work the following options need to be set in `smsd.conf`: - regular_run_interval = 60 - regular_run_cmd = AT+CREG?;+CSQ;+COPS? - regular_run_statfile = F +``` +regular_run_interval = 60 +regular_run_cmd = AT+CREG?;+CSQ;+COPS? +regular_run_statfile = F +``` +## Usage -### Requirements +``` +Flags: + -a, --age int The maximum age of the file in seconds (default 300) (default 300) + -c, --critical string Critical threshold for signal strength in percent (default "20:") + -h, --help help for check_sms3status + -s, --statusfile string Path to the status file + -v, --version version for check_sms3status + -w, --warning string Warning threshold for signal strength in percent (default "40:") +``` -* Perl library: `Nagios::Plugins utils.pm` - -### Usage - - check_sms3status [options] status_file - - --warning - warning level for percentage signal strength (default 40) - - --critical - critical level for percentage signal strength (default 20) - - --timeout - how long to wait for the file (default 30) - - --age - the maximum age of the file in seconds (default 300) +## Examples +```bash +check_sms3status --warning 30 --critical 50 --statusfile /path/to/statusfile +``` diff --git a/cmd/root.go b/cmd/root.go new file mode 100644 index 0000000..5099961 --- /dev/null +++ b/cmd/root.go @@ -0,0 +1,195 @@ +package cmd + +import ( + "fmt" + "math" + "os" + "regexp" + "strconv" + "strings" + "time" + + "github.com/NETWAYS/go-check" + "github.com/NETWAYS/go-check/result" + "github.com/spf13/cobra" +) + +var warning, critical, statusfilePath string +var maxFileAge int64 + +var csqRe = regexp.MustCompile(`\+CSQ:\s*(\d+),(\d+)`) +var copsReQuoted = regexp.MustCompile(`\+COPS:\s*\d+,\d+,"([^"]*)"`) +var copsReUnquoted = regexp.MustCompile(`\+COPS:\s*\d+,\d+,([^"]+)`) +var cregRe = regexp.MustCompile(`\+CREG:\s*(\d,(?:1|5))`) + +var rootCmd = &cobra.Command{ + Use: "check_sms3status", + Short: "This plugin checks the status of an SMS modem using the regular_run functionality provided in smstools3", + Long: `This plugin checks the status of an SMS modem using the regular_run functionality provided in smstools3a. It does not directly access the modem, but instead reads a status file generated by smstools3.`, + Example: ` +check_sms3status --warning 30 --critical 50 --statusfile /path/to/statusfile +`, + Run: func(_ *cobra.Command, _ []string) { + // Parse the thresholds add exit if there's an issue + warnThreshold, warningThresholdErr := check.ParseThreshold(warning) + + if warningThresholdErr != nil { + check.ExitError(warningThresholdErr) + } + + critThreshold, critThresholdErr := check.ParseThreshold(critical) + + if critThresholdErr != nil { + check.ExitError(critThresholdErr) + } + + // Get the file content and info + content, fileInfo, contentErr := getFileContentAndInfo(statusfilePath) + + if contentErr != nil { + check.ExitError(contentErr) + } + + var overall result.Overall + + overall.AddSubcheck(checkFileAge(fileInfo)) + overall.AddSubcheck(checkContent(string(content), *warnThreshold, *critThreshold)) + + check.Exit(overall.GetStatus(), overall.GetOutput()) + }, +} + +func Execute(version string) { + defer check.CatchPanic() + + rootCmd.Version = version + rootCmd.VersionTemplate() + + err := rootCmd.Execute() + if err != nil { + check.ExitError(err) + } +} + +func init() { + rootCmd.Flags().StringVarP(&statusfilePath, "statusfile", "s", "", "Path to the status file") + rootCmd.Flags().StringVarP(&warning, "warning", "w", "40:", "Warning threshold for signal strength in percent") + rootCmd.Flags().StringVarP(&critical, "critical", "c", "20:", "Critical threshold for signal strength in percent") + rootCmd.Flags().Int64VarP(&maxFileAge, "age", "a", 300, "The maximum age of the file in seconds (default 300)") + + _ = rootCmd.MarkFlagRequired("statusfile") +} + +func Usage(cmd *cobra.Command, _ []string) { + _ = cmd.Usage() + + os.Exit(3) +} + +// getFileContentAndInfo returns the files content and file info +func getFileContentAndInfo(filePath string) ([]byte, os.FileInfo, error) { + content, contentErr := os.ReadFile(filePath) + + var fileInfo os.FileInfo + + if contentErr != nil { + return content, fileInfo, contentErr + } + + fileInfo, fileInfoErr := os.Stat(filePath) + if fileInfoErr != nil { + return content, fileInfo, fileInfoErr + } + + return content, fileInfo, nil +} + +// checkFileAge compares the given file into with the requested maximum file age +func checkFileAge(fileInfo os.FileInfo) *result.PartialResult { + nowSec := time.Now().Unix() + fileSec := fileInfo.ModTime().Unix() + fileAge := nowSec - fileSec + + tmpResult := &result.PartialResult{ + Output: fmt.Sprintf("Status file was last updated %d seconds ago", fileAge), + } + + tmpResult.SetState(check.OK) + + if fileAge > maxFileAge { + tmpResult.SetState(check.Critical) + } + + return tmpResult +} + +// checkContent compares the file content against the given thresholds +func checkContent(fileContent string, warningThreshold check.Threshold, criticalThreshold check.Threshold) *result.PartialResult { + var signal, sigber int + + var network string + + isRegistered := true + + lines := strings.SplitSeq(fileContent, "\n") + + for line := range lines { + if matches := csqRe.FindStringSubmatch(line); matches != nil { + val, err := strconv.Atoi(matches[1]) + if err == nil { + signal = val + } + + val, err = strconv.Atoi(matches[2]) + if err == nil { + sigber = val + } + } else if matches := copsReQuoted.FindStringSubmatch(line); matches != nil { + network = matches[1] + } else if matches := copsReUnquoted.FindStringSubmatch(line); matches != nil { + network = matches[1] + } + + if strings.Contains(line, "+CREG:") && !cregRe.MatchString(line) { + isRegistered = false + } + } + + sigdb := (2 * signal) - 113 + sigproc := float64(signal*100) / 31.0 + result := result.NewPartialResult() + + if !isRegistered { + result.Output = "Modem not registered on network" + result.SetState(check.Critical) + + return result + } else if signal > 31 { + result.Output = "Signal strength returned an invalid value" + result.SetState(check.Unknown) + } + + result.Perfdata.Add(&check.Perfdata{Label: "dbm", Value: sigdb, Uom: "", Warn: nil, Crit: nil, Min: nil, Max: nil}) + result.Perfdata.Add(&check.Perfdata{Label: "signal", Value: math.Round(sigproc), Uom: "%", Warn: &warningThreshold, Crit: &criticalThreshold}) + + msg := fmt.Sprintf("Registered on network '%s' with signal strength %0.f%%", network, sigproc) + + result.Output = msg + + // bit error rate 99 means unknown + if sigber != 99 { + result.Perfdata.Add(&check.Perfdata{Label: "bit_error_rate", Value: sigber}) + } + + //nolint: gocritic + if criticalThreshold.DoesViolate(sigproc) { + result.SetState(check.Critical) + } else if warningThreshold.DoesViolate(sigproc) { + result.SetState(check.Warning) + result.Output = msg + } else { + result.SetState(check.OK) + } + + return result +} diff --git a/cmd/root_test.go b/cmd/root_test.go new file mode 100644 index 0000000..96cca1d --- /dev/null +++ b/cmd/root_test.go @@ -0,0 +1,102 @@ +package cmd + +import ( + "os" + "path/filepath" + "testing" + + "github.com/NETWAYS/go-check" +) + +func TestFileContent(t *testing.T) { + dir := t.TempDir() + filePath := filepath.Join(dir, "stat_critical.txt") + fileContent := "+CREG: 1,1\n+CSQ: 5,99\n+COPS: 0,0,\"Telekom\"" + expected := "+CREG: 1,1\n+CSQ: 5,99\n+COPS: 0,0,\"Telekom\"" + + err := os.WriteFile(filePath, []byte(fileContent), 0644) + + if err != nil { + t.Fatalf("Did not expect error while writing file: %v", err) + } + + content, _, _ := getFileContentAndInfo(filePath) + + actual := string(content) + + if actual != expected { + t.Errorf("expected: %q, actual: %q", expected, actual) + } +} + +type checkContentTest struct { + name string + expectedStatus string + expectedOutput string + expectedPerfData string + fileContent string + warnThreshold string + critThreshold string +} + +func TestCheckRexeg(t *testing.T) { + + tests := []checkContentTest{ + { + name: "CRITICAL", + expectedStatus: check.CriticalString, + expectedOutput: "Registered on network 'UNITTEST' with signal strength 16%", + expectedPerfData: "dbm=-103 signal=16%;50:;20:", + fileContent: "+CREG: 1,1\n+CSQ: 5,99\n+COPS: 0,0,\"UNITTEST\"", + warnThreshold: "50:", + critThreshold: "20:", + }, + { + name: "OK", + expectedStatus: check.OKString, + expectedOutput: "Registered on network 'EXAMPLE' with signal strength 74%", + expectedPerfData: "dbm=-67 signal=74%;50:;20: bit_error_rate=5", + fileContent: "+CREG: 1,1\n+CSQ: 23,5|\n+COPS: 0,0,\"EXAMPLE\"", + warnThreshold: "50:", + critThreshold: "20:", + }, + { + name: "WARNING with bitrate", + expectedStatus: check.WarningString, + expectedOutput: "Registered on network '02' with signal strength 45%", + expectedPerfData: "dbm=-85 signal=45%;50:;20: bit_error_rate=3", + fileContent: "+CREG: 1,1\n+CSQ: 14,3|\n+COPS: 0,0,\"02\"", + warnThreshold: "50:", + critThreshold: "20:", + }, + { + name: "CRITICAL with modem not registered", + expectedStatus: check.CriticalString, + expectedOutput: "Modem not registered on network", + fileContent: "+CREG: 0,0\n+CSQ: 20,2\n+COPS: 0,0,\"EXAMPLE\"", + warnThreshold: "50:", + critThreshold: "20:", + }, + } + + for _, test := range tests { + t.Run(test.name, func(t *testing.T) { + warnThreshold, _ := check.ParseThreshold(test.warnThreshold) + critThreshold, _ := check.ParseThreshold(test.critThreshold) + + result := checkContent(string(test.fileContent), *warnThreshold, *critThreshold) + + if result.Output != test.expectedOutput { + t.Errorf("expected output: %q, actual: %q ", test.expectedOutput, result.Output) + } + + if result.Perfdata.String() != test.expectedPerfData { + t.Errorf("expected perfdata: %q, actual: %q", test.expectedPerfData, result.Perfdata.String()) + } + + if result.GetStatus().String() != test.expectedStatus { + t.Errorf("expected status: %s, actual: %s", test.expectedStatus, result.GetStatus().String()) + } + }) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..078621e --- /dev/null +++ b/go.mod @@ -0,0 +1,13 @@ +module github.com/NETWAYS/check_sms3status + +go 1.26 + +require ( + github.com/NETWAYS/go-check v1.0.0-rc4 + github.com/spf13/cobra v1.10.2 +) + +require ( + github.com/inconshreveable/mousetrap v1.1.0 // indirect + github.com/spf13/pflag v1.0.10 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..8166ab6 --- /dev/null +++ b/go.sum @@ -0,0 +1,13 @@ +github.com/NETWAYS/go-check v1.0.0-rc4 h1:L+yS7wklUz/eUzkGndSKpi3DqCXmCAOSEQtBWkxF+7k= +github.com/NETWAYS/go-check v1.0.0-rc4/go.mod h1:8/GWnq8SirreAixgRmcp82JG16NnEl38rHq9phICy9s= +github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g= +github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8= +github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw= +github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= +github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU= +github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4= +github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= +github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk= +github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg= +go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= diff --git a/COPYING b/legacy/COPYING similarity index 100% rename from COPYING rename to legacy/COPYING diff --git a/legacy/README.md b/legacy/README.md new file mode 100644 index 0000000..44f49d3 --- /dev/null +++ b/legacy/README.md @@ -0,0 +1,36 @@ +check_sms3status +================ + +This plugin checks the status of an SMS modem using the regular_run functionality +provided in smstools3 + +It does not directly access the modem, but instead reads a status file generated +by smstools3. + +In order to work the following options need to be set in smsd.conf + + regular_run_interval = 60 + regular_run_cmd = AT+CREG?;+CSQ;+COPS? + regular_run_statfile = F + + +### Requirements + +* Perl library: `Nagios::Plugins utils.pm` + +### Usage + + check_sms3status [options] status_file + + --warning + warning level for percentage signal strength (default 40) + + --critical + critical level for percentage signal strength (default 20) + + --timeout + how long to wait for the file (default 30) + + --age + the maximum age of the file in seconds (default 300) + diff --git a/check_sms3status.pl b/legacy/check_sms3status.pl similarity index 100% rename from check_sms3status.pl rename to legacy/check_sms3status.pl diff --git a/main.go b/main.go new file mode 100644 index 0000000..e20dad8 --- /dev/null +++ b/main.go @@ -0,0 +1,31 @@ +package main + +import ( + "fmt" + + "github.com/NETWAYS/check_sms3status/cmd" +) + +var ( + version = "development" + commit = "HEAD" + date = "latest" +) + +func main() { + cmd.Execute(buildVersion()) +} + +func buildVersion() string { + result := version + + if commit != "" { + result = fmt.Sprintf("%s\ncommit: %s", result, commit) + } + + if date != "" { + result = fmt.Sprintf("%s\ndate: %s", result, date) + } + + return result +}