Add support to get information from environment variables.

[android-x86/external-ppp.git] / pppd / main.c

diff --git a/pppd/main.c b/pppd/main.c
index adb57f1..64efefe 100644 (file)
--- a/pppd/main.c
+++ b/pppd/main.c
@@ -360,16 +360,39 @@ main(argc, argv)
      */
     tty_init();
 
+    progname = *argv;
+
 #ifdef ANDROID_CHANGES
     {
         extern void pppox_init();
         pppox_init();
         privileged = 1;
     }
+    {
+        char *envargs = getenv("envargs");
+        if (envargs) {
+            int i;
+            /* Decode the arguments in-place and count the number of them.
+             * They were hex encoded using [A-P] instead of [0-9A-F]. */
+            for (argc = 0, i = 0; envargs[i] && envargs[i + 1]; i += 2) {
+                char c = ((envargs[i] - 'A') << 4) + (envargs[i + 1] - 'A');
+                if (c == 0) {
+                    ++argc;
+                }
+                envargs[i / 2 + 1] = c;
+            }
+            if (argc == 0 || (argv = malloc(sizeof(char *) * argc)) == NULL) {
+                fatal("Failed to parse envargs!");
+            }
+            for (envargs[0] = 0, i = 0; i < argc; ++envargs) {
+                if (envargs[0] == 0) {
+                    argv[i++] = &envargs[1];
+                }
+            }
+        }
+    }
 #endif
 
-    progname = *argv;
-
     /*
      * Parse, in order, the system options file, the user's options file,
      * and the command line arguments.