site: Make return value of transforms be an enum

[secnet.git] / site.c

diff --git a/site.c b/site.c
index db1452394bf67b7f173cb8133dd2793c573f24eb..0db109f239ebf9bab6ae84b163e6ce864aa3fd94 100644 (file)
--- a/site.c
+++ b/site.c
@@ -470,14 +470,15 @@ static bool_t current_valid(struct site *st)
 }
 
 #define DEFINE_CALL_TRANSFORM(fwdrev)                                  \
-static int call_transform_##fwdrev(struct site *st,                    \
+static transform_apply_return                                           \
+call_transform_##fwdrev(struct site *st,                               \
                                   struct transform_inst_if *transform, \
                                   struct buffer_if *buf,               \
                                   const char **errmsg)                 \
 {                                                                      \
     if (!is_transform_valid(transform)) {                              \
        *errmsg="transform not set up";                                 \
-       return 1;                                                       \
+       return transform_apply_err;                                     \
     }                                                                  \
     return transform->fwdrev(transform->st,buf,errmsg);                        \
 }
@@ -1029,8 +1030,9 @@ static void create_msg6(struct site *st, struct transform_inst_if *transform,
     /* Give the netlink code an opportunity to put its own stuff in the
        message (configuration information, etc.) */
     buf_prepend_uint32(&st->buffer,LABEL_MSG6);
-    int problem = call_transform_forwards(st,transform,
-                                         &st->buffer,&transform_err);
+    transform_apply_return problem =
+       call_transform_forwards(st,transform,
+                               &st->buffer,&transform_err);
     assert(!problem);
     buf_prepend_uint32(&st->buffer,LABEL_MSG6);
     buf_prepend_uint32(&st->buffer,st->index);
@@ -1075,7 +1077,7 @@ static bool_t decrypt_msg0(struct site *st, struct buffer_if *msg0,
 {
     cstring_t transform_err, auxkey_err, newkey_err="n/a";
     struct msg0 m;
-    uint32_t problem;
+    transform_apply_return problem;
 
     if (!unpick_msg0(st,msg0,&m)) return False;
 
@@ -1090,13 +1092,13 @@ static bool_t decrypt_msg0(struct site *st, struct buffer_if *msg0,
                           "peer has used new key","auxiliary key",LOG_SEC);
        return True;
     }
-    if (problem==2)
+    if (problem==transform_apply_seqrange)
        goto skew;
 
     buffer_copy(msg0, &st->scratch);
     problem = call_transform_reverse(st,st->auxiliary_key.transform,
                                     msg0,&auxkey_err);
-    if (problem==0) {
+    if (!problem) {
        slog(st,LOG_DROP,"processing packet which uses auxiliary key");
        if (st->auxiliary_is_new) {
            /* We previously timed out in state SENTMSG5 but it turns
@@ -1115,7 +1117,7 @@ static bool_t decrypt_msg0(struct site *st, struct buffer_if *msg0,
        }
        return True;
     }
-    if (problem==2)
+    if (problem==transform_apply_seqrange)
        goto skew;
 
     if (st->state==SITE_SENTMSG5) {
@@ -1131,7 +1133,7 @@ static bool_t decrypt_msg0(struct site *st, struct buffer_if *msg0,
            activate_new_key(st);
            return True; /* do process the data in this packet */
        }
-       if (problem==2)
+       if (problem==transform_apply_seqrange)
            goto skew;
     }