egutierrez
f2753e6fff
7 funciones Go del dominio infra para gestion programatica de ~/.ssh/config: ssh_config_parse (parser de bloques Host/Match), ssh_config_read (lectura del archivo), ssh_config_find (busqueda por host), ssh_config_add_entry y ssh_config_remove_entry (CRUD), ssh_config_render (serializacion a texto), ssh_config_write (escritura atomica). Incluye tipo SshConfigEntry (product type) y tests unitarios del parser.
85 lines
1.9 KiB
Go
85 lines
1.9 KiB
Go
package infra
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import (
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"bufio"
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"strconv"
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"strings"
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)
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// SSHConfigParse parsea el contenido de un archivo ~/.ssh/config y retorna
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// una lista de SSHConfigEntry. Ignora comentarios y lineas vacias.
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// Los bloques Host con wildcards (* o ?) se ignoran.
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func SSHConfigParse(content string) []SSHConfigEntry {
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var entries []SSHConfigEntry
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var current *SSHConfigEntry
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scanner := bufio.NewScanner(strings.NewReader(content))
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for scanner.Scan() {
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line := strings.TrimSpace(scanner.Text())
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if line == "" || strings.HasPrefix(line, "#") {
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continue
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}
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key, value := splitDirective(line)
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if key == "" {
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continue
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}
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if strings.EqualFold(key, "Host") {
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if current != nil && current.Alias != "" {
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entries = append(entries, *current)
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}
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if strings.ContainsAny(value, "*?") {
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current = nil
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continue
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}
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current = &SSHConfigEntry{
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Alias: value,
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Options: make(map[string]string),
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}
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continue
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}
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if current == nil {
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continue
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}
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switch strings.ToLower(key) {
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case "hostname":
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current.HostName = value
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case "user":
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current.User = value
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case "port":
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if p, err := strconv.Atoi(value); err == nil {
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current.Port = p
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}
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case "identityfile":
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current.IdentityFile = value
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default:
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current.Options[key] = value
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}
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}
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if current != nil && current.Alias != "" {
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entries = append(entries, *current)
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}
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return entries
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}
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// splitDirective separa una linea "Key Value" o "Key=Value" en clave y valor.
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func splitDirective(line string) (string, string) {
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// Intentar separar por =
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if idx := strings.IndexByte(line, '='); idx >= 0 {
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return strings.TrimSpace(line[:idx]), strings.TrimSpace(line[idx+1:])
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}
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// Separar por primer espacio/tab
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fields := strings.SplitN(line, " ", 2)
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if len(fields) < 2 {
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fields = strings.SplitN(line, "\t", 2)
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}
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if len(fields) < 2 {
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return "", ""
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}
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return strings.TrimSpace(fields[0]), strings.TrimSpace(fields[1])
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}
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