* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) University of Cambridge 1995 - 2020 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* This file is the header that is the only Exim header to be included in the
source for the local_scan.c() function. It contains definitions that are made
-available for use in that function, and which are documented.
+available for use in that function, and which are documented. That source
+should first #define LOCAL_SCAN
-This API is also used for functions called by the ${dlfunc expansion item. */
+Not every definition that becomes available to the compiler by the inclusion
+of this file is part of the local_scan API. The "Adding a local scan function
+to Exim" chapter in the documentation is definitive.
+
+This API is also used for functions called by the ${dlfunc expansion item.
+Source for those should first #define DLFUNC_IMPL and then include this file.
+Coders of dlfunc routines should read the notes on tainting at the start of
+store.c
+*/
/* Some basic types that make some things easier, the Exim configuration
#include "store.h"
+/* Some people (Marc Merlin et al) are maintaining a patch that allows for
+dynamic local_scan() libraries. This code is not yet in Exim proper, but it
+helps the maintainers if we keep their ABI version numbers here. This may
+mutate into more general support later. The major number is increased when the
+ABI is changed in a non backward compatible way. The minor number is increased
+each time a new feature is added (in a way that doesn't break backward
+compatibility). */
+
+#define LOCAL_SCAN_ABI_VERSION_MAJOR 4
+#define LOCAL_SCAN_ABI_VERSION_MINOR 1
+#define LOCAL_SCAN_ABI_VERSION \
+ LOCAL_SCAN_ABI_VERSION_MAJOR.LOCAL_SCAN_ABI_VERSION_MINOR
+
+
+
/* The function and its return codes. */
extern int local_scan(int, uschar **);
#define SPOOL_DATA_START_OFFSET (MESSAGE_ID_LENGTH+3)
-/* Some people (Marc Merlin et al) are maintaining a patch that allows for
-dynamic local_scan() libraries. This code is not yet in Exim proper, but it
-helps the maintainers if we keep their ABI version numbers here. This may
-mutate into more general support later. The major number is increased when the
-ABI is changed in a non backward compatible way. The minor number is increased
-each time a new feature is added (in a way that doesn't break backward
-compatibility). */
-
-#define LOCAL_SCAN_ABI_VERSION_MAJOR 2
-#define LOCAL_SCAN_ABI_VERSION_MINOR 0
-#define LOCAL_SCAN_ABI_VERSION \
- LOCAL_SCAN_ABI_VERSION_MAJOR.LOCAL_SCAN_ABI_VERSION_MINOR
-
/* Structure definitions that are documented as visible in the function. */
typedef struct header_line {
/* Entries in lists options are in this form. */
typedef struct {
- const char *name; /* should have been uschar but too late now */
- int type;
- void *value;
+ const char * name; /* should have been uschar but too late now */
+ int type;
+ union {
+ void * value;
+ long offset;
+ void (* fn)();
+ } v;
} optionlist;
+#define OPT_OFF(s, field) {.offset = offsetof(s, field)}
/* Structure for holding information about an envelope address. The errors_to
field is always NULL except for one_time aliases that had errors_to on the
/* Functions that are documented as visible in local_scan(). */
extern int child_close(pid_t, int);
-extern pid_t child_open(uschar **, uschar **, int, int *, int *, BOOL);
-extern pid_t child_open_exim(int *);
-extern pid_t child_open_exim2(int *, uschar *, uschar *);
extern void debug_printf(const char *, ...) PRINTF_FUNCTION(1,2);
extern uschar *expand_string(uschar *);
extern void header_add(int, const char *, ...);
string_sprintf_trc(fmt, US __FUNCTION__, __LINE__, __VA_ARGS__)
extern uschar *string_sprintf_trc(const char *, const uschar *, unsigned, ...) ALMOST_PRINTF(1,4);
-#ifdef LOCAL_SCAN
+#define store_get(size, tainted) \
+ store_get_3(size, tainted, __FUNCTION__, __LINE__)
+extern void *store_get_3(int, BOOL, const char *, int) ALLOC ALLOC_SIZE(1) WARN_UNUSED_RESULT;
+#define store_get_perm(size, tainted) \
+ store_get_perm_3(size, tainted, __FUNCTION__, __LINE__)
+extern void *store_get_perm_3(int, BOOL, const char *, int) ALLOC ALLOC_SIZE(1) WARN_UNUSED_RESULT;
+
+
+#if defined(LOCAL_SCAN) || defined(DLFUNC_IMPL)
/* When compiling a local_scan() file we want to rename a published API, so that
we can use an inlined implementation in the compiles of the main Exim files,
with the original name. */
# define string_copy(s) string_copy_function(s)
# define string_copyn(s, n) string_copyn_function((s), (n))
# define string_copy_taint(s, t) string_copy_taint_function((s), (t))
+# define child_open_exim(p) child_open_exim_function((p), US"from local_scan")
+# define child_open_exim2(p, s, a) child_open_exim2_function((p), (s), (a), US"from local_scan")
+# define child_open(a,e,u,i,o,l) child_open_function((a),(e),(u),(i),(o),(l),US"from local_scan")
extern uschar * string_copy_function(const uschar *);
-extern uschar * string_copyn_function(const uschar *);
-extern uschar * string_copy_taint_function(const uschar *);
+extern uschar * string_copyn_function(const uschar *, int n);
+extern uschar * string_copy_taint_function(const uschar *, BOOL tainted);
+extern pid_t child_open_exim_function(int *, const uschar *);
+extern pid_t child_open_exim2_function(int *, uschar *, uschar *, const uschar *);
+extern pid_t child_open_function(uschar **, uschar **, int, int *, int *, BOOL, const uschar *);
#endif
/* End of local_scan.h */
git://git.exim.org / exim.git / blobdiff