-/*************************************************
-* Exim - an Internet mail transport agent *
-*************************************************/
-
-/* Copyright (c) 1998 Malcolm Beattie */
-/* Copyright (C) 1999 - 2018 Exim maintainers */
-
-/* Modified by PH to get rid of the "na" usage, March 1999.
- Modified further by PH for general tidying for Exim 4.
- Threaded Perl support added by Stefan Traby, Nov 2002
-*/
-
-
-/* This Perl add-on can be distributed under the same terms as Exim itself. */
-/* See the file NOTICE for conditions of use and distribution. */
-
-#include <assert.h>
-
-#define HINTSDB_H
-#define DBFUNCTIONS_H
-
-#include "exim.h"
-
-#define EXIM_TRUE TRUE
-#undef TRUE
-
-#define EXIM_FALSE FALSE
-#undef FALSE
-
-#define EXIM_DEBUG DEBUG
-#undef DEBUG
-
-#include <EXTERN.h>
-#include <perl.h>
-#include <XSUB.h>
-
-#ifndef ERRSV
-#define ERRSV (GvSV(errgv))
-#endif
-
-/* Some people like very old perl versions, so avoid any build side-effects. */
-
-#ifndef pTHX
-# define pTHX
-# define pTHX_
-#endif
-#ifndef EXTERN_C
-# define EXTERN_C extern
-#endif
-
-EXTERN_C void boot_DynaLoader(pTHX_ CV *cv);
-
-
-static PerlInterpreter *interp_perl = 0;
-
-XS(xs_expand_string)
-{
- dXSARGS;
- uschar *str;
- STRLEN len;
-
- if (items != 1)
- croak("Usage: Exim::expand_string(string)");
-
- str = expand_string(US SvPV(ST(0), len));
- ST(0) = sv_newmortal();
- if (str != NULL)
- sv_setpv(ST(0), CCS str);
- else if (!f.expand_string_forcedfail)
- croak("syntax error in Exim::expand_string argument: %s",
- expand_string_message);
-}
-
-XS(xs_debug_write)
-{
- dXSARGS;
- STRLEN len;
- if (items != 1)
- croak("Usage: Exim::debug_write(string)");
- debug_printf("%s", US SvPV(ST(0), len));
-}
-
-XS(xs_log_write)
-{
- dXSARGS;
- STRLEN len;
- if (items != 1)
- croak("Usage: Exim::log_write(string)");
- log_write(0, LOG_MAIN, "%s", US SvPV(ST(0), len));
-}
-
-static void xs_init(pTHX)
-{
- char *file = __FILE__;
- newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
- newXS("Exim::expand_string", xs_expand_string, file);
- newXS("Exim::debug_write", xs_debug_write, file);
- newXS("Exim::log_write", xs_log_write, file);
-}
-
-uschar *
-init_perl(uschar *startup_code)
-{
- static int argc = 1;
- static char *argv[4] = { "exim-perl" };
- SV *sv;
- STRLEN len;
-
- if (opt_perl_taintmode) argv[argc++] = "-T";
- argv[argc++] = "/dev/null";
- argv[argc] = 0;
-
- assert(sizeof(argv)/sizeof(argv[0]) > argc);
-
- if (interp_perl) return 0;
- interp_perl = perl_alloc();
- perl_construct(interp_perl);
- perl_parse(interp_perl, xs_init, argc, argv, 0);
- perl_run(interp_perl);
- {
- dSP;
-
- /*********************************************************************/
- /* These lines by PH added to make "warn" output go to the Exim log; I
- hope this doesn't break anything. */
-
- sv = newSVpv(
- "$SIG{__WARN__} = sub { my($s) = $_[0];"
- "$s =~ s/\\n$//;"
- "Exim::log_write($s) };", 0);
- PUSHMARK(SP);
- perl_eval_sv(sv, G_SCALAR|G_DISCARD|G_KEEPERR);
- SvREFCNT_dec(sv);
- if (SvTRUE(ERRSV)) return US SvPV(ERRSV, len);
- /*********************************************************************/
-
- sv = newSVpv(CS startup_code, 0);
- PUSHMARK(SP);
- perl_eval_sv(sv, G_SCALAR|G_DISCARD|G_KEEPERR);
- SvREFCNT_dec(sv);
- if (SvTRUE(ERRSV)) return US SvPV(ERRSV, len);
-
- setlocale(LC_ALL, "C"); /* In case it got changed */
- return NULL;
- }
-}
-
-void
-cleanup_perl(void)
-{
- if (!interp_perl)
- return;
- perl_destruct(interp_perl);
- perl_free(interp_perl);
- interp_perl = 0;
-}
-
-gstring *
-call_perl_cat(gstring * yield, uschar **errstrp, uschar *name, uschar **arg)
-{
- dSP;
- SV *sv;
- STRLEN len;
- uschar *str;
- int items;
-
- if (!interp_perl)
- {
- *errstrp = US"the Perl interpreter has not been started";
- return 0;
- }
-
- ENTER;
- SAVETMPS;
- PUSHMARK(SP);
- while (*arg != NULL) XPUSHs(newSVpv(CS (*arg++), 0));
- PUTBACK;
- items = perl_call_pv(CS name, G_SCALAR|G_EVAL);
- SPAGAIN;
- sv = POPs;
- PUTBACK;
- if (SvTRUE(ERRSV))
- {
- *errstrp = US SvPV(ERRSV, len);
- return NULL;
- }
- if (!SvOK(sv))
- {
- *errstrp = 0;
- return NULL;
- }
- str = US SvPV(sv, len);
- yield = string_catn(yield, str, (int)len);
- FREETMPS;
- LEAVE;
-
- setlocale(LC_ALL, "C"); /* In case it got changed */
- return yield;
-}
-
-/* End of perl.c */