DH parameters update, new values & default

[users/jgh/exim.git] / src / src / dbstuff.h

diff --git a/src/src/dbstuff.h b/src/src/dbstuff.h
index bb429126e9f1c85bc93bc20b810e8a1aeb54e411..93c715ac2f27f33568870f57875777c43500c600 100644 (file)
--- a/src/src/dbstuff.h
+++ b/src/src/dbstuff.h
@@ -1,10 +1,8 @@
-/* $Cambridge: exim/src/src/dbstuff.h,v 1.2 2005/01/04 10:00:42 ph10 Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2005 */
+/* Copyright (c) University of Cambridge 1995 - 2009 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* This header file contains macro definitions so that a variety of DBM
@@ -66,7 +64,7 @@ tdb_traverse to be called) */
 
 /* EXIM_DBCREATE_CURSOR - initialize for scanning operation */
 #define EXIM_DBCREATE_CURSOR(db, cursor) { \
-   *(cursor) = malloc(sizeof(TDB_DATA)); (*(cursor))->dptr = NULL; }
+   *(cursor) = store_malloc(sizeof(TDB_DATA)); (*(cursor))->dptr = NULL; }
 
 /* EXIM_DBSCAN - This is complicated because we have to free the last datum
 free() must not die when passed NULL */
@@ -135,7 +133,7 @@ API changed for DB 4.1. */
 #define EXIM_DBOPEN(name, flags, mode, dbpp) \
        if (db_create(dbpp, NULL, 0) != 0 || \
          ((*dbpp)->set_errcall(*dbpp, dbfn_bdb_error_callback), \
-         (*dbpp)->open(*dbpp, NULL, CS name, NULL, \
+         ((*dbpp)->open)(*dbpp, NULL, CS name, NULL, \
          ((flags) == O_RDONLY)? DB_UNKNOWN : DB_HASH, \
          ((flags) == O_RDONLY)? DB_RDONLY : DB_CREATE, \
          mode)) != 0) *(dbpp) = NULL
@@ -143,7 +141,7 @@ API changed for DB 4.1. */
 #define EXIM_DBOPEN(name, flags, mode, dbpp) \
        if (db_create(dbpp, NULL, 0) != 0 || \
          ((*dbpp)->set_errcall(*dbpp, dbfn_bdb_error_callback), \
-         (*dbpp)->open(*dbpp, CS name, NULL, \
+         ((*dbpp)->open)(*dbpp, CS name, NULL, \
          ((flags) == O_RDONLY)? DB_UNKNOWN : DB_HASH, \
          ((flags) == O_RDONLY)? DB_RDONLY : DB_CREATE, \
          mode)) != 0) *(dbpp) = NULL
@@ -300,6 +298,17 @@ before use, but we don't have to free anything after reading data. */
 /* Some text for messages */
 #define EXIM_DBTYPE   "db (v1)"
 
+/* When scanning, for the non-first case we historically just passed 0
+as the flags field and it worked.  On FreeBSD 8 it no longer works and
+instead leads to memory exhaustion.  The man-page on FreeBSD says to use
+R_NEXT, but this 1.x is a historical fallback and I've no idea how portable
+the use of that flag is; so the solution is to define R_NEXT here if it's not
+already defined, with a default value of 0 because that's what we've always
+before been able to pass successfully. */
+#ifndef R_NEXT
+#define R_NEXT 0
+#endif
+
 /* Access functions */
 
 /* EXIM_DBOPEN - sets *dbpp to point to an EXIM_DB, NULL if failed */
@@ -331,7 +340,7 @@ before use, but we don't have to free anything after reading data. */
 
 /* EXIM_DBSCAN - returns TRUE if data is returned, FALSE at end */
 #define EXIM_DBSCAN(db, key, data, first, cursor)      \
-       ((db)->seq(db, &key, &data, (first? R_FIRST : 0)) == 0)
+       ((db)->seq(db, &key, &data, (first? R_FIRST : R_NEXT)) == 0)
 
 /* EXIM_DBDELETE_CURSOR - terminate scanning operation (null). Make it
 refer to cursor, to keep picky compilers happy. */
@@ -363,8 +372,8 @@ after reading data. */
 
 /* Basic DB type */
 typedef struct {
-       GDBM_FILE gdbm; /* Database */
-       datum lkey;     /* Last key, for scans */
+       GDBM_FILE gdbm;  /* Database */
+       datum lkey;      /* Last key, for scans */
 } EXIM_DB;
 
 /* Cursor type, not used with gdbm: just set up a dummy */
@@ -564,9 +573,11 @@ performed on them. There are two groups of records:
 2. keyed by domain -
      Domain response upto MAIL FROM:<>, postmaster, random local part;
 
-If a record exists, the result field is either ccache_accept or ccache_reject.
-The other fields, however, (which are only relevant to domain records) may also
-contain ccache_unknown if that particular test has not been done.
+If a record exists, the result field is either ccache_accept or ccache_reject,
+or, for a domain record only, ccache_reject_mfnull when MAIL FROM:<> was
+rejected. The other fields, however, (which are only relevant to domain
+records) may also contain ccache_unknown if that particular test has not been
+done.
 
 Originally, there was only one structure, used for both types. However, it got
 expanded for domain records, so it got split. To make it possible for Exim to
@@ -631,4 +642,24 @@ typedef struct {
 } dbdata_serialize;
 
 
+/* This structure records the information required for the ratelimit
+ACL condition. */
+
+typedef struct {
+  time_t time_stamp;
+  /*************/
+  int    time_usec;       /* Fractional part of time, from gettimeofday() */
+  double rate;            /* Smoothed sending rate at that time */
+} dbdata_ratelimit;
+
+/* Same as above, plus a Bloom filter for uniquifying events. */
+
+typedef struct {
+  dbdata_ratelimit dbd;
+  time_t   bloom_epoch;   /* When the Bloom filter was last reset */
+  unsigned bloom_size;    /* Number of bytes in the Bloom filter */
+  uschar   bloom[40];     /* Bloom filter which may be larger than this */
+} dbdata_ratelimit_unique;
+
+
 /* End of dbstuff.h */