use upfront sudo

[rrq/newlisp-ftw.git] / enitool.lsp

diff --git a/enitool.lsp b/enitool.lsp
index 0efd7977f4d7bdf60e2196794d539aeb63a7e58b..6e72882f6f7d93f642a3ecfcddaa745e9475fa82 100755 (executable)
--- a/enitool.lsp
+++ b/enitool.lsp
@@ -13,6 +13,11 @@
 
 ;(signal 2 (fn (x) (exit)))
 
+(when (!= "0" (if (exec "id -u") ($it 0) ""))
+  (let ((SUDO (if (exec "command -v sudo") ($it 0) "/usr/bin/sudo")))
+    (wait-pid (process (join (cons SUDO (main-args) " ")))))
+  (exit 0))
+
 (constant
  ;; all "block starters", including blank lines
  'ENI-KEY '( "iface" "mapping" "auto" "allow-\\w*" "rename"
@@ -20,14 +25,15 @@
  ;; regex to identify block starters
  'ENI-HEAD (format "^\\s*#?\\s*(%s)" (join ENI-KEY "|"))
  'ENI-COMMENT "^\\s*#"
+ 'EDITOR (or (env "EDITOR") "nano")
+ 'PROC (if (exec (format "command -v %s" EDITOR)) ($it 0) "/bin/nano")
  )
 
 (define (is-eni-key PAT S)
   (when (regex PAT S 0) true))
 
 (define (is-eni-comment S)
-  (is-eni-key ENI-COMMENT S)
-  )
+  (is-eni-key ENI-COMMENT S))
 
 (define (istrue? A B)
   (list A B) (= A B true))
@@ -37,7 +43,7 @@
 
 ;; Pull out the block headed by the B line. If this head is a blank
 ;; line, then the block includes preceeding comment and the blank line
-;; only. Otherwise it includes preceeding comment, head line and fthe
+;; only. Otherwise it includes preceeding comment, head line and the
 ;; following mix of non-head lines and comment lines (i.e. up to next
 ;; head line). FROM is the line after the prior block, and it is moved
 ;; to end of this block.
@@ -72,26 +78,23 @@
 (setf PATH '(( 0 "/etc/network/interfaces" )) )
 
 ; Edit a file
-(define (edit-file I FILE SUDO)
-  (let ((PROC (if SUDO "/usr/bin/sudo /bin/nano" "/bin/nano")))
-    (wait-pid (process (format "%s -F -J 75 -I -l +%d %s" PROC (int I) FILE)))
-    ))
+(define (edit-file I FILE)
+  (wait-pid (process (format "%s +%d %s" PROC (int I) FILE))))
 
 (define (ensure-newline TXT)
   (if (empty? TXT) "" (ends-with TXT "\n") TXT (string TXT "\n")))
 
 (define (update-file B E TXT FILE)
-  ;;(println (list 'update-file B E TXT FILE))
   (let ((DATA (parse (read-file FILE) "\n")))
     (write-file TXT (string (join (0 B DATA) "\n" true)
                             (ensure-newline (read-file TXT))
                             (join (E DATA) "\n")))
-    (exec (format "sudo mv %s %s" TXT FILE))
+    (exec (format "mv %s %s" TXT FILE))
     ))
 
 (define (key-command-select I FILE) ; PATH
   (letn ((BLOCK (find-block (- (int I) 1) FILE))
-         (TMP "/tmp/enitool.conf")
+         (TMP "/tmp/enitool/tmp.conf")
          (HEAD (BLOCK (- (BLOCK 1) (BLOCK 0) -3)))
          (TAG (or (and (regex "^#?(\\w*) (.*)" HEAD 0) $1) "#"))
          (VALUE $2))
@@ -107,14 +110,14 @@
 
 (define (delete-block-maybe I FILE)
   (let ((BLOCK (find-block (- (int I) 1) FILE))
-        (TMP "/tmp/enitool.conf"))
+        (TMP "/tmp/enitool/tmp.conf"))
     (when (= (3 BLOCK) '(""))
-      (exec (format "sudo ed %s" FILE)
+      (exec (format "ed -s %s" FILE)
             (format "%dd\nw\n" (+ 1 (BLOCK 0)))))))
 
 (define (toggle-commenting I FILE)
   (let ((BLOCK (find-block (- (int I) 1) FILE))
-        (TMP "/tmp/enitool.conf"))
+        (TMP "/tmp/enitool/tmp.conf"))
     (letn ((H (- (BLOCK 1) (BLOCK 0)))
            (TXT (3 BLOCK))
            (toggle (if (starts-with (TXT H) "#")
@@ -133,17 +136,19 @@
      ((member $2 '("KEY_RIGHT" "RETURN")) (key-command-select $1 FILE))
      ((= $2 "d") (delete-block-maybe $1 FILE))
      ((= $2 "#") (toggle-commenting $1 FILE))
-     ((= $2 "e") (edit-file $1 FILE "sudo"))
+     ((= $2 "e") (edit-file $1 FILE))
      )))
 
 (define (iselect POS FILE)
   (exec (format "iselect -n '%s' -t '%s' -a -P -K '-k#' -kd -ke -p %d < %s"
                 "enitool" FILE (int POS) FILE)))
 
+(change-dir "/etc/network")
+(wait-pid (process (format "mkdir -m 777 -p /tmp/enitool")))
+
 (while PATH
-  (let ((SEL (apply iselect (PATH 0))) (FILE (PATH 0 1)))
-    (if SEL (command-dispatch (SEL 0) FILE)
-      (pop PATH))
-    ))
+  (if (apply iselect (PATH 0))
+      (command-dispatch ($it 0) (PATH 0 1))
+    (pop PATH)))
 
 (exit 0)