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Merge pull request #36 from redhatrises/uninstall
feat: add uninstall capability
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2024 CrowdStrike | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
|
|
||
| package installer | ||
|
|
||
| import ( | ||
| "log" | ||
| "log/slog" | ||
| "os/exec" | ||
|
|
||
| "github.com/crowdstrike/falcon-installer/pkg/falcon/falconctl" | ||
| "github.com/crowdstrike/falcon-installer/pkg/utils" | ||
| "github.com/crowdstrike/falcon-installer/pkg/utils/osutils" | ||
| ) | ||
|
|
||
| // Uninstall removes the Falcon Sensor from the target system. | ||
| func Uninstall(fc FalconInstaller) { | ||
| falconInstalled, err := osutils.FalconInstalled(fc.OSType) | ||
| if err != nil { | ||
| log.Fatalf("Error checking if Falcon sensor is installed: %v", err) | ||
| } | ||
|
|
||
| // Uninstall the Falcon Sensor | ||
| if falconInstalled { | ||
| fc.uninstallSensor() | ||
| } | ||
| slog.Info("Falcon Sensor has been uninstalled") | ||
| } | ||
|
|
||
| // installSensor installs the Falcon sensor using the appropriate package manager. | ||
| func (fc FalconInstaller) uninstallSensor() { | ||
| c := "" | ||
| env := "" | ||
| args := []string{} //nolint:staticcheck | ||
|
|
||
| switch fc.OSType { | ||
| case "linux": | ||
| sensor := "falcon-sensor" | ||
|
|
||
| if cmd, err := exec.LookPath("/usr/bin/dnf"); err == nil { | ||
| c = cmd | ||
| args = []string{"remove", "-q", "-y", sensor} | ||
| } else if cmd, err := exec.LookPath("/usr/bin/yum"); err == nil { | ||
| c = cmd | ||
| args = []string{"remove", "-q", "-y", sensor} | ||
| } else if cmd, err := exec.LookPath("/usr/bin/zypper"); err == nil { | ||
| c = cmd | ||
| args = []string{"remove", "--quiet", "-y", sensor} | ||
| } else if cmd, err := exec.LookPath("/usr/bin/apt-get"); err == nil { | ||
| c = cmd | ||
| args = []string{"purge", "-y", sensor} | ||
| env = "DEBIAN_FRONTEND=noninteractive" | ||
| } else if cmd, err := exec.LookPath("/usr/bin/dpkg"); err == nil { | ||
| c = cmd | ||
| args = []string{"remove", "--qq", "-y", sensor} | ||
| env = "DEBIAN_FRONTEND=noninteractive" | ||
| } else { | ||
| log.Fatalf("Unable to find expected linux package manager. Unsupported package manager: %v", err) | ||
| } | ||
|
|
||
| slog.Debug("Uninstall command being used for removal", "Command", c, "Args", args) | ||
| stdout, stderr, err := installSensorWithRetry(c, env, args) | ||
| if err != nil { | ||
| log.Fatalf("Error running %s: %v, stdout: %s, stderr: %s", c, err, string(stdout), string(stderr)) | ||
| } | ||
|
|
||
| slog.Debug("Removing Falcon Sensor", string(stdout), string(stderr)) | ||
| case "windows": | ||
| uninstallArgs := []string{"/uninstall", "/quiet"} | ||
| uninstallRegex := `^((WindowsSensor|FalconSensor_Windows).*\.)(exe)$` | ||
| dir := "C:\\ProgramData\\Package Cache" | ||
|
|
||
| slog.Debug("Finding the Falcon Sensor uninstaller", "Directory", dir, "Regex", uninstallRegex) | ||
| uninstaller, err := utils.FindFile(dir, uninstallRegex) | ||
| if err != nil { | ||
| log.Fatalf("Error finding the Windows Sensor uninstaller: %v", err) | ||
| } | ||
|
|
||
| slog.Debug("Running the Falcon Sensor uninstaller", "Uninstaller", uninstaller, "Args", uninstallArgs) | ||
| stdout, stderr, err := utils.RunCmd(uninstaller, uninstallArgs) | ||
| if err != nil { | ||
| log.Fatalf("Error running %s: %v, stdout: %s, stderr: %s", uninstaller, err, string(stdout), string(stderr)) | ||
| } | ||
|
|
||
| slog.Debug("Removing Falcon Sensor") | ||
| case "macos": | ||
| slog.Debug("Unloading the Falcon Sensor") | ||
| if err := falconctl.Set(fc.OSType, fc.macosArgHandler("unload")); err != nil { | ||
| log.Fatalf("Error configuring Falcon sensor: %v", err) | ||
| } | ||
|
|
||
| slog.Debug("Uninstalling the Falcon Sensor") | ||
| if err := falconctl.Set(fc.OSType, fc.macosArgHandler("uninstall")); err != nil { | ||
| log.Fatalf("Error configuring Falcon sensor: %v", err) | ||
| } | ||
| default: | ||
| log.Fatalf("Unable to begin package installation. Unsupported OS: %s", fc.OSType) | ||
| } | ||
| } |
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