Adding upstream version 4.92.upstream/4.92upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 601 insertions, 0 deletions

diff --git a/src/exim.h b/src/exim.h
new file mode 100644
index 0000000..79d1acf
--- /dev/null
+++ b/src/exim.h
@@ -0,0 +1,601 @@
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+
+/* Source files for exim all #include this header, which drags in everything
+that is needed. They don't all need everything, of course, but it's far too
+messy to have each one importing its own list, and anyway, most of them need
+most of these includes. */
+
+#ifndef EXIM_H
+#define EXIM_H
+
+/* Assume most systems have statfs() unless os.h undefines this macro */
+
+#define HAVE_STATFS
+
+/* Similarly, assume most systems have srandom() unless os.h undefines it.
+This call dates back at least as far as SUSv2. */
+
+#define HAVE_SRANDOM
+
+/* This is primarily for the Gnu C library; we define it before os.h so that
+os.h has a chance to hurriedly undef it, Just In Case.  We need C99 for some
+64-bit math support, and defining _ISOC99_SOURCE breaks <resolv.h> and friends.
+*/
+
+#define _GNU_SOURCE 1
+
+/* First of all include the os-specific header, which might set things that
+are needed by any of the other headers, including system headers. */
+
+#include "os.h"
+
+/* If it didn't define os_find_running_interfaces, use the common function. */
+
+#ifndef os_find_running_interfaces
+# define os_find_running_interfaces os_common_find_running_interfaces
+#endif
+
+/* If it didn't define the base for "base 62" numbers, we really do use 62.
+This is the case for all real Unix and Unix-like OS. It's only Cygwin and
+Darwin, with their case-insensitive file systems, that can't use base 62 for
+making unique names. */
+
+#ifndef BASE_62
+# define BASE_62 62
+#endif
+
+/* The maximum value of localhost_number depends on the base being used */
+
+#if BASE_62 == 62
+# define LOCALHOST_MAX  16
+#else
+# define LOCALHOST_MAX  10
+#endif
+
+/* If not overridden by os.h, dynamic libraries have filenames ending .so */
+#ifndef DYNLIB_FN_EXT
+# define DYNLIB_FN_EXT "so"
+#endif
+
+/* ANSI C standard includes */
+
+#include <ctype.h>
+#include <locale.h>
+#include <math.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+/* Unix includes */
+
+#include <errno.h>
+#if defined(__svr4__) && defined(__sparc) && ! defined(__EXTENSIONS__)
+# define __EXTENSIONS__  /* so that SunOS 5 gets NGROUPS_MAX */
+# include <limits.h>
+# undef  __EXTENSIONS__
+#else
+# include <limits.h>
+#endif
+
+/* C99 integer types, figure out how to undo this if needed for older systems */
+
+#include <inttypes.h>
+
+/* Just in case some aged system doesn't define them... */
+
+#ifndef INT_MAX
+# define INT_MAX 2147483647
+#endif
+
+#ifndef INT_MIN
+# define INT_MIN (-INT_MAX - 1)
+#endif
+
+#ifndef SHRT_MAX
+# define SHRT_MAX 32767
+#endif
+
+#ifndef UCHAR_MAX
+# define UCHAR_MAX 255
+#endif
+
+
+/* To match int_eximarith_t.  Define in OS/os.h-<your-system> to override. */
+#ifndef EXIM_ARITH_MAX
+# define EXIM_ARITH_MAX ((int_eximarith_t)9223372036854775807LL)
+#endif
+#ifndef EXIM_ARITH_MIN
+# define EXIM_ARITH_MIN (-EXIM_ARITH_MAX - 1)
+#endif
+
+/* Some systems have PATH_MAX and some have MAX_PATH_LEN. */
+
+#ifndef PATH_MAX
+# ifdef MAX_PATH_LEN
+#  define PATH_MAX MAX_PATH_LEN
+# else
+#  define PATH_MAX 1024
+# endif
+#endif
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <dirent.h>
+#include <netdb.h>
+#ifndef NO_POLL_H
+# include <poll.h>
+#endif
+#include <pwd.h>
+#include <grp.h>
+#include <syslog.h>
+
+/* Not all systems have flock() available. Those that do must define LOCK_SH
+in sys/file.h. */
+
+#ifndef LOCK_SH
+# define NO_FLOCK
+#endif
+
+#ifndef NO_SYSEXITS        /* some OS don't have this */
+# include <sysexits.h>
+#endif
+
+/* A few OS don't have socklen_t; their os.h files define EXIM_SOCKLEN_T to
+be size_t or whatever. We used to use SOCKLEN_T, but then it was discovered
+that this is used by the AIX include files. */
+
+#ifndef EXIM_SOCKLEN_T
+# define EXIM_SOCKLEN_T socklen_t
+#endif
+
+/* Ensure that the sysexits we reference are defined */
+
+#ifndef EX_UNAVAILABLE
+# define EX_UNAVAILABLE 69        /* service unavailable; used for execv fail */
+#endif
+#ifndef EX_CANTCREAT
+# define EX_CANTCREAT   73        /* can't create file: treat as temporary */
+#endif
+#ifndef EX_TEMPFAIL
+# define EX_TEMPFAIL    75        /* temp failure; user is invited to retry */
+#endif
+#ifndef EX_CONFIG
+# define EX_CONFIG      78        /* configuration error */
+#endif
+
+/* This one is not in any sysexits file that I've come across */
+
+#define EX_EXECFAILED 127        /* execve() failed */
+
+
+#include <sys/time.h>
+#include <sys/param.h>
+
+#ifndef NO_SYS_RESOURCE_H  /* QNX doesn't have this */
+# include <sys/resource.h>
+#endif
+
+#include <sys/socket.h>
+
+/* If we are on an IPv6 system, the macro AF_INET6 will have been defined in
+the sys/socket.h header. It is helpful to have this defined on an IPv4 system
+so that it can appear in the code, even if it is never actually used when
+the code is run. It saves some #ifdef occurrences. */
+
+#ifndef AF_INET6
+# define AF_INET6 24
+#endif
+
+#include <sys/ioctl.h>
+
+/* The new standard is statvfs; some OS have statfs. For statvfs the block
+counts must be multiplied by the "fragment size" f_frsize to get the actual
+size. In other cases the value seems to be f_bsize (which is sometimes the only
+block size), so we use a macro to get that instead.
+
+Also arrange to be able to cut it out altogether for way-out OS that don't have
+anything. I've indented a bit here to try to make the mess a bit more
+intelligible. Note that simply defining one name to be another when
+HAVE_SYS_STATVFS_H is not set will not work if the system has a statvfs macro
+or a macro with entries f_frsize and f_bsize. */
+
+#ifdef HAVE_STATFS
+  #ifdef HAVE_SYS_STATVFS_H
+    #include <sys/statvfs.h>
+    #define STATVFS statvfs
+    #define F_FRSIZE f_frsize
+  #else
+    #define STATVFS statfs
+    #define F_FRSIZE f_bsize
+    #ifdef HAVE_SYS_VFS_H
+      #include <sys/vfs.h>
+      #ifdef HAVE_SYS_STATFS_H
+      #include <sys/statfs.h>
+      #endif
+    #endif
+    #ifdef HAVE_SYS_MOUNT_H
+    #include <sys/mount.h>
+    #endif
+  #endif
+
+  /* Macros for the fields for the available space for non-superusers; define
+  these only if the OS header has not. Not all OS have f_favail; those that
+  are known to have it define F_FAVAIL as f_favail. The default is to use
+  f_free. */
+
+  #ifndef F_BAVAIL
+  # define F_BAVAIL f_bavail
+  #endif
+
+  #ifndef F_FAVAIL
+  # define F_FAVAIL f_ffree
+  #endif
+
+  /* All the systems I've been able to look at seem to have F_FILES */
+
+  #ifndef F_FILES
+  # define F_FILES  f_files
+  #endif
+
+#endif
+
+
+#ifndef  SIOCGIFCONF   /* HACK for SunOS 5 */
+# include <sys/sockio.h>
+#endif
+
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <sys/utsname.h>
+#include <fcntl.h>
+
+/* There's a shambles in IRIX6 - it defines EX_OK in unistd.h which conflicts
+with the definition in sysexits.h. Exim does not actually use this macro, so we
+just undefine it. It would be nice to be able to re-instate the definition from
+sysexits.h if there is no definition in unistd.h, but I do not think there is a
+way to do this in C because macro definitions are not scanned for other macros
+at definition time. [The code here used to assume they were, until I was
+disabused of the notion. Luckily, since EX_OK is not used, it didn't matter.] */
+
+#ifdef EX_OK
+# undef EX_OK
+#endif
+
+#include <unistd.h>
+
+#include <utime.h>
+#ifndef NO_NET_IF_H
+# include <net/if.h>
+#endif
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+
+/* While IPv6 is still young the definitions of T_AAAA and T_A6 may not be
+included in arpa/nameser.h. Fudge them here. */
+
+#ifndef T_AAAA
+#define T_AAAA 28
+#endif
+
+#ifndef T_A6
+#define T_A6 38
+#endif
+
+/* Ancient systems (e.g. SunOS4) don't appear to have T_TXT defined in their
+header files. I don't suppose they have T_SRV either. */
+
+#ifndef T_TXT
+# define T_TXT 16
+#endif
+
+#ifndef T_SRV
+# define T_SRV 33
+#endif
+
+/* Many systems do not have T_SPF. */
+
+#ifndef T_SPF
+# define T_SPF 99
+#endif
+
+/* New TLSA record for DANE */
+#ifndef T_TLSA
+# define T_TLSA 52
+#endif
+#define MAX_TLSA_EXPANDED_SIZE 8192
+
+/* It seems that some versions of arpa/nameser.h don't define *any* of the
+T_xxx macros, which seem to be non-standard nowadays. Just to be on the safe
+side, put in definitions for all the ones that Exim uses. */
+
+#ifndef T_A
+# define T_A 1
+#endif
+
+#ifndef T_CNAME
+# define T_CNAME 5
+#endif
+
+#ifndef T_SOA
+# define T_SOA 6
+#endif
+
+#ifndef T_MX
+# define T_MX 15
+#endif
+
+#ifndef T_NS
+# define T_NS 2
+#endif
+
+#ifndef T_PTR
+# define T_PTR 12
+#endif
+
+
+/* We define a few private types for special DNS lookups:
+
+ . T_ZNS gets the nameservers of the enclosing zone of a domain
+
+ . T_MXH gets the MX hostnames only (without their priorities)
+
+ . T_CSA gets the domain's Client SMTP Authorization SRV record
+
+ . T_ADDRESSES looks up both AAAA (or A6) and A records
+
+If any of these names appear in the RRtype list at:
+  <http://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml>
+then we should rename Exim's private type away from the conflict.
+*/
+
+#define T_ZNS (-1)
+#define T_MXH (-2)
+#define T_CSA (-3)
+#define T_ADDRESSES (-4)
+
+/* The resolv.h header defines __P(x) on some Solaris 2.5.1 systems (without
+checking that it is already defined, in fact). This conflicts with other
+headers that behave likewise (see below), leading to compiler warnings. Arrange
+to undefine it if resolv.h defines it. */
+
+#if defined(__P)
+# define __P_WAS_DEFINED_BEFORE_RESOLV
+#endif
+
+#include <resolv.h>
+
+#if defined(__P) && ! defined (__P_WAS_DEFINED_BEFORE_RESOLV)
+# undef __P
+#endif
+
+/* If not defined by os.h, we do nothing special to push DNS resolver state
+back to be available by the classic resolver routines.  Also, provide
+prototype for our get routine, unless defined away. */
+
+#ifndef os_put_dns_resolver_res
+# define os_put_dns_resolver_res(R) do {/**/} while(0)
+#endif
+#ifndef os_get_dns_resolver_res
+res_state os_get_dns_resolver_res(void);
+#endif
+
+/* These three are to support the IP option logging code. Linux is
+different to everyone else and there are also other systems which don't
+have netinet/ip_var.h, so there's a general macro to control its inclusion. */
+
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+
+#ifndef NO_IP_VAR_H
+# include <netinet/ip_var.h>
+#endif
+
+/* Linux (and some others) uses a different type for the 2nd argument of
+iconv(). It's os.h file defines ICONV_ARG2_TYPE. For the rest, define a default
+here. */
+
+#ifndef ICONV_ARG2_TYPE
+# define ICONV_ARG2_TYPE char **
+#endif
+
+/* One OS uses a different type for the 5th argument of getsockopt */
+
+#ifndef GETSOCKOPT_ARG5_TYPE
+# define GETSOCKOPT_ARG5_TYPE socklen_t *
+#endif
+
+/* One operating system uses a different type for the 2nd argument of select().
+Its os.h file defines SELECT_ARG2_TYPE. For the rest, define a default here. */
+
+#ifndef SELECT_ARG2_TYPE
+# define SELECT_ARG2_TYPE fd_set
+#endif
+
+/* One operating system uses a different type for the 4th argument of
+dn_expand(). Its os.h file defines DN_EXPAND_ARG4_TYPE. For the rest, define a
+default here. */
+
+#ifndef DN_EXPAND_ARG4_TYPE
+# define DN_EXPAND_ARG4_TYPE char *
+#endif
+
+/* One operating system defines a different type for the yield of inet_addr().
+In Exim code, its value is always assigned to the s_addr members of address
+structures. Casting the yield to the type of s_addr should fix the problem,
+since the size of the data is correct. Just in case this ever has to be
+changed, use a macro for the type, and define it here so that it is possible to
+use different values for specific OS if ever necessary. */
+
+#ifndef S_ADDR_TYPE
+# define S_ADDR_TYPE u_long
+#endif
+
+/* (At least) one operating system (Solaris) defines a different type for the
+second argument of pam_converse() - the difference is the absence of "const".
+Its os.h file defines PAM_CONVERSE_ARG2_TYPE. For the rest, define a default
+here. */
+
+#ifndef PAM_CONVERSE_ARG2_TYPE
+# define PAM_CONVERSE_ARG2_TYPE const struct pam_message
+#endif
+
+/* One operating system (SunOS4) defines getc, ungetc, feof, and ferror as
+macros and not as functions. Exim needs them to be assignable functions. This
+flag gets set to cause this to be sorted out here. */
+
+#ifdef FUDGE_GETC_AND_FRIENDS
+# undef getc
+extern int getc(FILE *);
+# undef ungetc
+extern int ungetc(int, FILE *);
+# undef feof
+extern int feof(FILE *);
+# undef ferror
+extern int ferror(FILE *);
+#endif
+
+/* The header from the PCRE regex package */
+
+#include <pcre.h>
+
+/* Exim includes are in several files. Note that local_scan.h #includes
+config.h, mytypes.h, and store.h, so we don't need to mention them explicitly.
+*/
+
+#include "local_scan.h"
+#include "macros.h"
+#include "dbstuff.h"
+#include "structs.h"
+#include "blob.h"
+#include "globals.h"
+#include "hash.h"
+#include "functions.h"
+#include "dbfunctions.h"
+#include "osfunctions.h"
+
+#ifdef EXPERIMENTAL_BRIGHTMAIL
+# include "bmi_spam.h"
+#endif
+#ifdef SUPPORT_SPF
+# include "spf.h"
+#endif
+#ifdef EXPERIMENTAL_SRS
+# include "srs.h"
+#endif
+#ifndef DISABLE_DKIM
+# include "dkim.h"
+#endif
+#ifdef EXPERIMENTAL_DMARC
+# include "dmarc.h"
+# include <opendmarc/dmarc.h>
+#endif
+
+/* The following stuff must follow the inclusion of config.h because it
+requires various things that are set therein. */
+
+#if HAVE_ICONV             /* Not all OS have this */
+# include <iconv.h>
+#endif
+
+#if defined(USE_READLINE) || defined(EXPAND_DLFUNC) || defined (LOOKUP_MODULE_DIR)
+# include <dlfcn.h>
+#endif
+
+#ifdef ENABLE_DISABLE_FSYNC
+# define EXIMfsync(f) (disable_fsync? 0 : fsync(f))
+#else
+# define EXIMfsync(f) fsync(f)
+#endif
+
+/* Backward compatibility; LOOKUP_LSEARCH now includes all three */
+
+#if (!defined LOOKUP_LSEARCH) && (defined LOOKUP_WILDLSEARCH || defined LOOKUP_NWILDLSEARCH)
+# define LOOKUP_LSEARCH yes
+#endif
+
+/* Define a union to hold either an IPv4 or an IPv6 sockaddr structure; this
+simplifies some of the coding.  We include the sockaddr to reduce type-punning
+issues in C99. */
+
+union sockaddr_46 {
+  struct sockaddr_in v4;
+  #if HAVE_IPV6
+  struct sockaddr_in6 v6;
+  #endif
+  struct sockaddr v0;
+};
+
+/* If SUPPORT_TLS is not defined, ensure that USE_GNUTLS is also not defined
+so that if USE_GNUTLS *is* set, we can assume SUPPORT_TLS is also set.
+Likewise, OSCP, AUTH_TLS and CERTNAMES cannot be supported. */
+
+#ifndef SUPPORT_TLS
+# undef USE_GNUTLS
+# ifndef DISABLE_OCSP
+#  define DISABLE_OCSP
+# endif
+# undef EXPERIMENTAL_CERTNAMES
+# undef AUTH_TLS
+#endif
+
+/* If SPOOL_DIRECTORY, LOG_FILE_PATH or PID_FILE_PATH have not been defined,
+set them to the null string. */
+
+#ifndef SPOOL_DIRECTORY
+  #define SPOOL_DIRECTORY ""
+#endif
+#ifndef LOG_FILE_PATH
+  #define LOG_FILE_PATH ""
+#endif
+#ifndef PID_FILE_PATH
+  #define PID_FILE_PATH ""
+#endif
+
+/* The EDQUOT error code isn't universally available, though it is widespread.
+There is a particular shambles in SunOS5, where it did not exist originally,
+but got installed with a particular patch for Solaris 2.4. There is a
+configuration variable for specifying what the system's "over quota" error is,
+which will end up in config.h if supplied in OS/Makefile-xxx. If it is not set,
+default to EDQUOT if it exists, otherwise ENOSPC. */
+
+#ifndef ERRNO_QUOTA
+# ifdef  EDQUOT
+#  define ERRNO_QUOTA EDQUOT
+# else
+#  define ERRNO_QUOTA ENOSPC
+# endif
+#endif
+
+/* DANE w/o DNSSEC is useless */
+#if defined(SUPPORT_DANE) && defined(DISABLE_DNSSEC)
+# error DANE support requires DNSSEC support
+#endif
+
+/* Some platforms (FreeBSD, OpenBSD, Solaris) do not seem to define this */
+
+#ifndef POLLRDHUP
+# define POLLRDHUP (POLLIN | POLLHUP)
+#endif
+
+/* Some platforms (Darwin) have to define a larger limit on groups membership */
+
+#ifndef EXIM_GROUPLIST_SIZE
+# define EXIM_GROUPLIST_SIZE NGROUPS_MAX
+#endif
+
+#endif
+/* End of exim.h */