| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package nagios |
| 4 | |
| 5 | import ( |
| 6 | "fmt" |
| 7 | "maps" |
| 8 | "os" |
| 9 | "os/user" |
| 10 | "runtime" |
| 11 | "sort" |
| 12 | ) |
| 13 | |
| 14 | func buildRunEnv(workingDir string, jobEnv map[string]string, macroEnv map[string]string) []string { |
| 15 | merged := buildExecutionBaselineEnv(workingDir) |
| 16 | for k, v := range jobEnv { |
| 17 | merged[k] = replaceMacro(v, macroEnv) |
| 18 | } |
| 19 | maps.Copy(merged, macroEnv) |
| 20 | |
| 21 | keys := make([]string, 0, len(merged)) |
| 22 | for k := range merged { |
| 23 | keys = append(keys, k) |
| 24 | } |
| 25 | sort.Strings(keys) |
| 26 | |
| 27 | out := make([]string, 0, len(keys)) |
| 28 | for _, k := range keys { |
| 29 | out = append(out, fmt.Sprintf("%s=%s", k, merged[k])) |
| 30 | } |
| 31 | return out |
| 32 | } |
| 33 | |
| 34 | func buildExecutionBaselineEnv(workingDir string) map[string]string { |
| 35 | if runtime.GOOS == "windows" { |
| 36 | return buildWindowsExecutionBaselineEnv() |
| 37 | } |
| 38 | return buildUnixExecutionBaselineEnv(workingDir) |
| 39 | } |
| 40 | |
| 41 | func buildUnixExecutionBaselineEnv(workingDir string) map[string]string { |
| 42 | env := make(map[string]string) |
| 43 | setEnvFromProcess(env, "PATH", "PATH") |
| 44 | setEnvFromProcess(env, "TZ", "TZ") |
| 45 | setEnvFromProcess(env, "TZDIR", "TZDIR") |
| 46 | setWorkingDirEnv(env, workingDir) |
| 47 | |
| 48 | tmpdir := os.Getenv("TMPDIR") |
| 49 | if tmpdir == "" { |
| 50 | tmpdir = os.TempDir() |
| 51 | } |
| 52 | if tmpdir != "" { |
| 53 | env["TMPDIR"] = tmpdir |
| 54 | } |
| 55 | |
| 56 | if u, err := user.Current(); err == nil { |
| 57 | if u.Username != "" { |
| 58 | env["USER"] = u.Username |
| 59 | env["LOGNAME"] = u.Username |
| 60 | } |
| 61 | if u.HomeDir != "" { |
| 62 | env["HOME"] = u.HomeDir |
| 63 | } |
| 64 | } else { |
| 65 | setEnvFromProcess(env, "USER", "USER") |
| 66 | setEnvFromProcess(env, "LOGNAME", "LOGNAME") |
| 67 | setEnvFromProcess(env, "HOME", "HOME") |
| 68 | } |
| 69 | |
| 70 | env["SHELL"] = "/bin/sh" |
| 71 | env["LC_ALL"] = "C" |
| 72 | return env |
| 73 | } |
| 74 | |
| 75 | func buildWindowsExecutionBaselineEnv() map[string]string { |
| 76 | env := make(map[string]string) |
| 77 | for _, key := range []string{ |
| 78 | "PATH", |
| 79 | "TMP", |
| 80 | "TEMP", |
| 81 | "USERPROFILE", |
| 82 | "HOMEDRIVE", |
| 83 | "HOMEPATH", |
| 84 | "SystemRoot", |
| 85 | "WINDIR", |
| 86 | "ComSpec", |
| 87 | "PATHEXT", |
| 88 | "TZ", |
| 89 | } { |
| 90 | setEnvFromProcess(env, key, key) |
| 91 | } |
| 92 | return env |
| 93 | } |
| 94 | |
| 95 | func setEnvFromProcess(dst map[string]string, dstKey, srcKey string) { |
| 96 | if value := os.Getenv(srcKey); value != "" { |
| 97 | dst[dstKey] = value |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | func setWorkingDirEnv(dst map[string]string, workingDir string) { |
| 102 | if workingDir != "" { |
| 103 | dst["PWD"] = workingDir |
| 104 | return |
| 105 | } |
| 106 | if cwd, err := os.Getwd(); err == nil && cwd != "" { |
| 107 | dst["PWD"] = cwd |
| 108 | } |
| 109 | } |