X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=secnet.h;h=037ef804aec8f42e38355265be9508400251a16d;hb=4a1a591973e0be6f33a55b8f1fc5abc827f6969d;hp=fbb7660da685e8721aac0a56a4e017845ffd69f5;hpb=5edf478f9f729427bb4d979d15b21db049222d68;p=secnet.git

diff --git a/secnet.h b/secnet.h
index fbb7660..037ef80 100644
--- a/secnet.h
+++ b/secnet.h
@@ -12,21 +12,6 @@
 #include <sys/time.h>
 #include <netinet/in.h>
 
-/*
- * Macros added by SGT for endianness-independence
- */
-#define GET_32BIT_MSB_FIRST(cp) \
-  (((unsigned long)(unsigned char)(cp)[0] << 24) | \
-  ((unsigned long)(unsigned char)(cp)[1] << 16) | \
-  ((unsigned long)(unsigned char)(cp)[2] << 8) | \
-  ((unsigned long)(unsigned char)(cp)[3]))
-
-#define PUT_32BIT_MSB_FIRST(cp, value) ( \
-  (cp)[0] = (char)((value) >> 24), \
-  (cp)[1] = (char)((value) >> 16), \
-  (cp)[2] = (char)((value) >> 8), \
-  (cp)[3] = (char)(value) )
-
 typedef char *string_t;
 typedef const char *cstring_t;
 typedef enum {False,True} bool_t;
@@ -184,17 +169,24 @@ extern void register_for_poll(void *st, beforepoll_fn *before,
 
 /* The secnet program goes through a number of phases in its lifetime.
    Module code may arrange to be called just as various phases are
-   entered. */
-
-#define PHASE_INIT          0
-#define PHASE_GETOPTS       1  /* Process command-line arguments */
-#define PHASE_READCONFIG    2  /* Parse and process configuration file */
-#define PHASE_SETUP         3  /* Process information in configuration */
-#define PHASE_GETRESOURCES  4  /* Obtain all external resources */
-#define PHASE_DROPPRIV      5  /* Last chance for privileged operations */
-#define PHASE_RUN           6
-#define PHASE_SHUTDOWN      7  /* About to die; delete key material, etc. */
-#define NR_PHASES           8
+   entered.
+ 
+   Remember to update the table in util.c if changing the set of
+   phases. */
+
+enum phase {
+    PHASE_INIT,
+    PHASE_GETOPTS,             /* Process command-line arguments */
+    PHASE_READCONFIG,          /* Parse and process configuration file */
+    PHASE_SETUP,               /* Process information in configuration */
+    PHASE_DAEMONIZE,           /* Become a daemon (if necessary) */
+    PHASE_GETRESOURCES,        /* Obtain all external resources */
+    PHASE_DROPPRIV,            /* Last chance for privileged operations */
+    PHASE_RUN,
+    PHASE_SHUTDOWN,            /* About to die; delete key material, etc. */
+    /* Keep this last: */
+    NR_PHASES,
+};
 
 typedef void hook_fn(void *self, uint32_t newphase);
 bool_t add_hook(uint32_t phase, hook_fn *f, void *state);
@@ -380,15 +372,21 @@ struct site_if {
 
 typedef struct transform_inst_if *transform_createinstance_fn(void *st);
 typedef bool_t transform_setkey_fn(void *st, uint8_t *key, int32_t keylen);
+typedef bool_t transform_valid_fn(void *st); /* 0: no key; 1: ok */
 typedef void transform_delkey_fn(void *st);
 typedef void transform_destroyinstance_fn(void *st);
-/* Returns 0 for 'all is well', any other value for a problem */
+/* Returns:
+ *   0: all is well
+ *   1: for any other problem
+ *   2: message decrypted but sequence number was out of range
+ */
 typedef uint32_t transform_apply_fn(void *st, struct buffer_if *buf,
 				    const char **errmsg);
 
 struct transform_inst_if {
     void *st;
     transform_setkey_fn *setkey;
+    transform_valid_fn *valid;
     transform_delkey_fn *delkey;
     transform_apply_fn *forwards;
     transform_apply_fn *reverse;
@@ -413,10 +411,11 @@ struct transform_if {
 typedef void netlink_deliver_fn(void *st, struct buffer_if *buf);
 /* site code can tell netlink when outgoing packets will be dropped,
    so netlink can generate appropriate ICMP and make routing decisions */
-#define LINK_QUALITY_DOWN 0   /* No chance of a packet being delivered */
-#define LINK_QUALITY_DOWN_STALE_ADDRESS 1 /* Link down, old address information */
-#define LINK_QUALITY_DOWN_CURRENT_ADDRESS 2 /* Link down, current address information */
-#define LINK_QUALITY_UP 3     /* Link active */
+#define LINK_QUALITY_UNUSED 0   /* This link is unused, do not make this netlink */
+#define LINK_QUALITY_DOWN 1   /* No chance of a packet being delivered right away*/
+#define LINK_QUALITY_DOWN_STALE_ADDRESS 2 /* Link down, old address information */
+#define LINK_QUALITY_DOWN_CURRENT_ADDRESS 3 /* Link down, current address information */
+#define LINK_QUALITY_UP 4     /* Link active */
 #define MAXIMUM_LINK_QUALITY 3
 typedef void netlink_link_quality_fn(void *st, uint32_t quality);
 typedef void netlink_register_fn(void *st, netlink_deliver_fn *deliver,
@@ -430,8 +429,6 @@ struct netlink_if {
     netlink_register_fn *reg;
     netlink_deliver_fn *deliver;
     netlink_link_quality_fn *set_quality;
-    netlink_output_config_fn *output_config;
-    netlink_check_config_fn *check_config;
     netlink_set_mtu_fn *set_mtu;
 };