1 files changed, 9 insertions, 9 deletions

diff --git a/mailutils/sendmail.c b/mailutils/sendmail.c
index 2fbceaad2..7a4afb835 100644
--- a/mailutils/sendmail.c
+++ b/mailutils/sendmail.c
@@ -250,10 +250,8 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
                 OPT_S = 1 << 6,         // specify connection string
                 OPT_a = 1 << 7,         // authentication tokens
                 OPT_v = 1 << 8,         // verbosity
-        //--- from -am
-                OPT_am_mask = 3 << 14,  // AUTH method
-                OPT_am_login = 0 << 14, // AUTH LOGIN (default)
-                OPT_am_plain = 1 << 14, // AUTH PLAIN
+        //--- for -amMETHOD
+                OPT_am_plain = 1 << 9,  // AUTH PLAIN
         };
 
         // init global variables
@@ -293,9 +291,11 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
                 if ('p' == a[0])
                         G.pass = xstrdup(a+1);
                 if ('m' == a[0]) {
-                        if (strcasecmp("plain", a+1) == 0)
+                        if ((a[1] | 0x20) == 'p') // PLAIN
                                 opts |= OPT_am_plain;
-                        else if (strcasecmp("login", a+1) != 0)
+                        else if ((a[1] | 0x20) == 'l') // LOGIN
+                                ; /* do nothing (this is the default) */
+                        else
                                 bb_error_msg_and_die("unsupported AUTH method %s", a+1);
                 }
         }
@@ -357,10 +357,10 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
 
         // perform authentication
         if (opts & OPT_a) {
-                // we must read credentials unless they are given via -a[up] options
+                // read credentials unless they are given via -a[up] options
                 if (!G.user || !G.pass)
                         get_cred_or_die(4);
-                if ((opts & OPT_am_mask) == OPT_am_plain) {
+                if (opts & OPT_am_plain) {
                         char *plain_auth;
                         size_t user_len, pass_len;
                         user_len = strlen(G.user);
@@ -373,7 +373,7 @@ int sendmail_main(int argc UNUSED_PARAM, char **argv)
                         plain_auth[1 + user_len] = '\0';
                         printbuf_base64(plain_auth, 1 + user_len + 1 + pass_len);
                         free(plain_auth);
-                } else if ((opts & OPT_am_mask) == OPT_am_login) {
+                } else {
                         smtp_check("AUTH LOGIN", 334);
                         printstr_base64(G.user);
                         smtp_check("", 334);