Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream

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

13 files changed, 3720 insertions, 0 deletions

diff --git a/pigeonhole/src/plugins/imapsieve/Makefile.am b/pigeonhole/src/plugins/imapsieve/Makefile.am
new file mode 100644
index 0000000..1fea23e
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/Makefile.am
@@ -0,0 +1,40 @@
+imap_moduledir = $(dovecot_moduledir)
+sieve_plugindir = $(dovecot_moduledir)/sieve
+
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+sieve_plugin_LTLIBRARIES = lib90_sieve_imapsieve_plugin.la
+
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+
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+	-I$(top_srcdir)/src/lib-sieve/util \
+	-I$(top_srcdir)/src/lib-sieve/plugins/environment \
+	$(LIBDOVECOT_IMAP_INCLUDE) \
+	$(LIBDOVECOT_LDA_INCLUDE) \
+	$(LIBDOVECOT_INCLUDE) \
+	-DPKG_RUNDIR=\""$(rundir)"\"
+
+lib95_imap_sieve_plugin_la_SOURCES = \
+	ext-imapsieve.c \
+	ext-imapsieve-environment.c \
+	imap-sieve.c \
+	imap-sieve-storage.c \
+	imap-sieve-plugin.c
+lib95_imap_sieve_plugin_la_LIBADD = \
+	$(top_builddir)/src/lib-sieve/libdovecot-sieve.la
+
+lib90_sieve_imapsieve_plugin_la_SOURCES = \
+	ext-imapsieve.c \
+	sieve-imapsieve-plugin.c
+lib90_sieve_imapsieve_plugin_la_CPPFLAGS = \
+	${AM_CPPFLAGS} \
+	-D__IMAPSIEVE_DUMMY
+
+noinst_HEADERS = \
+	ext-imapsieve-common.h \
+	imap-sieve.h \
+	imap-sieve-storage.h \
+	imap-sieve-plugin.h \
+	sieve-imapsieve-plugin.h
diff --git a/pigeonhole/src/plugins/imapsieve/Makefile.in b/pigeonhole/src/plugins/imapsieve/Makefile.in
new file mode 100644
index 0000000..833d2b7
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/Makefile.in
@@ -0,0 +1,864 @@
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+top_srcdir = @top_srcdir@
+imap_moduledir = $(dovecot_moduledir)
+sieve_plugindir = $(dovecot_moduledir)/sieve
+imap_module_LTLIBRARIES = lib95_imap_sieve_plugin.la
+sieve_plugin_LTLIBRARIES = lib90_sieve_imapsieve_plugin.la
+lib95_imap_sieve_plugin_la_LDFLAGS = -module -avoid-version
+lib90_sieve_imapsieve_plugin_la_LDFLAGS = -module -avoid-version
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/lib-sieve \
+	-I$(top_srcdir)/src/lib-sieve/util \
+	-I$(top_srcdir)/src/lib-sieve/plugins/environment \
+	$(LIBDOVECOT_IMAP_INCLUDE) \
+	$(LIBDOVECOT_LDA_INCLUDE) \
+	$(LIBDOVECOT_INCLUDE) \
+	-DPKG_RUNDIR=\""$(rundir)"\"
+
+lib95_imap_sieve_plugin_la_SOURCES = \
+	ext-imapsieve.c \
+	ext-imapsieve-environment.c \
+	imap-sieve.c \
+	imap-sieve-storage.c \
+	imap-sieve-plugin.c
+
+lib95_imap_sieve_plugin_la_LIBADD = \
+	$(top_builddir)/src/lib-sieve/libdovecot-sieve.la
+
+lib90_sieve_imapsieve_plugin_la_SOURCES = \
+	ext-imapsieve.c \
+	sieve-imapsieve-plugin.c
+
+lib90_sieve_imapsieve_plugin_la_CPPFLAGS = \
+	${AM_CPPFLAGS} \
+	-D__IMAPSIEVE_DUMMY
+
+noinst_HEADERS = \
+	ext-imapsieve-common.h \
+	imap-sieve.h \
+	imap-sieve-storage.h \
+	imap-sieve-plugin.h \
+	sieve-imapsieve-plugin.h
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign src/plugins/imapsieve/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign src/plugins/imapsieve/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+install-imap_moduleLTLIBRARIES: $(imap_module_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	@list='$(imap_module_LTLIBRARIES)'; test -n "$(imap_moduledir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(imap_moduledir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(imap_moduledir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(imap_moduledir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(imap_moduledir)"; \
+	}
+
+uninstall-imap_moduleLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(imap_module_LTLIBRARIES)'; test -n "$(imap_moduledir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(imap_moduledir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(imap_moduledir)/$$f"; \
+	done
+
+clean-imap_moduleLTLIBRARIES:
+	-test -z "$(imap_module_LTLIBRARIES)" || rm -f $(imap_module_LTLIBRARIES)
+	@list='$(imap_module_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+install-sieve_pluginLTLIBRARIES: $(sieve_plugin_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	@list='$(sieve_plugin_LTLIBRARIES)'; test -n "$(sieve_plugindir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(sieve_plugindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(sieve_plugindir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(sieve_plugindir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(sieve_plugindir)"; \
+	}
+
+uninstall-sieve_pluginLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(sieve_plugin_LTLIBRARIES)'; test -n "$(sieve_plugindir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(sieve_plugindir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(sieve_plugindir)/$$f"; \
+	done
+
+clean-sieve_pluginLTLIBRARIES:
+	-test -z "$(sieve_plugin_LTLIBRARIES)" || rm -f $(sieve_plugin_LTLIBRARIES)
+	@list='$(sieve_plugin_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+lib90_sieve_imapsieve_plugin.la: $(lib90_sieve_imapsieve_plugin_la_OBJECTS) $(lib90_sieve_imapsieve_plugin_la_DEPENDENCIES) $(EXTRA_lib90_sieve_imapsieve_plugin_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(lib90_sieve_imapsieve_plugin_la_LINK) -rpath $(sieve_plugindir) $(lib90_sieve_imapsieve_plugin_la_OBJECTS) $(lib90_sieve_imapsieve_plugin_la_LIBADD) $(LIBS)
+
+lib95_imap_sieve_plugin.la: $(lib95_imap_sieve_plugin_la_OBJECTS) $(lib95_imap_sieve_plugin_la_DEPENDENCIES) $(EXTRA_lib95_imap_sieve_plugin_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(lib95_imap_sieve_plugin_la_LINK) -rpath $(imap_moduledir) $(lib95_imap_sieve_plugin_la_OBJECTS) $(lib95_imap_sieve_plugin_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ext-imapsieve-environment.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ext-imapsieve.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/imap-sieve-plugin.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/imap-sieve-storage.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/imap-sieve.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Plo@am__quote@ # am--include-marker
+
+$(am__depfiles_remade):
+	@$(MKDIR_P) $(@D)
+	@echo '# dummy' >$@-t && $(am__mv) $@-t $@
+
+am--depfiles: $(am__depfiles_remade)
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
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+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
+
+lib90_sieve_imapsieve_plugin_la-ext-imapsieve.lo: ext-imapsieve.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(lib90_sieve_imapsieve_plugin_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT lib90_sieve_imapsieve_plugin_la-ext-imapsieve.lo -MD -MP -MF $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Tpo -c -o lib90_sieve_imapsieve_plugin_la-ext-imapsieve.lo `test -f 'ext-imapsieve.c' || echo '$(srcdir)/'`ext-imapsieve.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Tpo $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='ext-imapsieve.c' object='lib90_sieve_imapsieve_plugin_la-ext-imapsieve.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(lib90_sieve_imapsieve_plugin_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o lib90_sieve_imapsieve_plugin_la-ext-imapsieve.lo `test -f 'ext-imapsieve.c' || echo '$(srcdir)/'`ext-imapsieve.c
+
+lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.lo: sieve-imapsieve-plugin.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(lib90_sieve_imapsieve_plugin_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.lo -MD -MP -MF $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Tpo -c -o lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.lo `test -f 'sieve-imapsieve-plugin.c' || echo '$(srcdir)/'`sieve-imapsieve-plugin.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Tpo $(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='sieve-imapsieve-plugin.c' object='lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(imap_moduledir)" "$(DESTDIR)$(sieve_plugindir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
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+
+install-am: all-am
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+
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
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+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
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+	@echo "it deletes files that may require special tools to rebuild."
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+
+clean-am: clean-generic clean-imap_moduleLTLIBRARIES clean-libtool \
+	clean-sieve_pluginLTLIBRARIES mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/ext-imapsieve-environment.Plo
+	-rm -f ./$(DEPDIR)/ext-imapsieve.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve-plugin.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve-storage.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve.Plo
+	-rm -f ./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Plo
+	-rm -f ./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Plo
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
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+
+dvi-am:
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+html: html-am
+
+html-am:
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+info: info-am
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+install-data-am: install-imap_moduleLTLIBRARIES \
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+installcheck-am:
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+maintainer-clean: maintainer-clean-am
+		-rm -f ./$(DEPDIR)/ext-imapsieve-environment.Plo
+	-rm -f ./$(DEPDIR)/ext-imapsieve.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve-plugin.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve-storage.Plo
+	-rm -f ./$(DEPDIR)/imap-sieve.Plo
+	-rm -f ./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-ext-imapsieve.Plo
+	-rm -f ./$(DEPDIR)/lib90_sieve_imapsieve_plugin_la-sieve-imapsieve-plugin.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-imap_moduleLTLIBRARIES \
+	uninstall-sieve_pluginLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-imap_moduleLTLIBRARIES clean-libtool \
+	clean-sieve_pluginLTLIBRARIES cscopelist-am ctags ctags-am \
+	distclean distclean-compile distclean-generic \
+	distclean-libtool distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am \
+	install-imap_moduleLTLIBRARIES install-info install-info-am \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-sieve_pluginLTLIBRARIES install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am \
+	uninstall-imap_moduleLTLIBRARIES \
+	uninstall-sieve_pluginLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/pigeonhole/src/plugins/imapsieve/ext-imapsieve-common.h b/pigeonhole/src/plugins/imapsieve/ext-imapsieve-common.h
new file mode 100644
index 0000000..d3e69cd
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/ext-imapsieve-common.h
@@ -0,0 +1,29 @@
+#ifndef EXT_IMAPSIEVE_COMMON_H
+#define EXT_IMAPSIEVE_COMMON_H
+
+#include "sieve-extensions.h"
+
+#include "imap-sieve.h"
+
+/*
+ * Extensions
+ */
+
+extern const struct sieve_extension_def imapsieve_extension;
+extern const struct sieve_extension_def imapsieve_extension_dummy;
+
+extern const struct sieve_extension_def vnd_imapsieve_extension;
+extern const struct sieve_extension_def vnd_imapsieve_extension_dummy;
+
+/*
+ * Environment items
+ */
+
+void ext_imapsieve_environment_items_register
+	(const struct sieve_extension *ext,
+		const struct sieve_runtime_env *renv);
+void ext_imapsieve_environment_vendor_items_register
+	(const struct sieve_extension *ext,
+		const struct sieve_runtime_env *renv);
+
+#endif
diff --git a/pigeonhole/src/plugins/imapsieve/ext-imapsieve-environment.c b/pigeonhole/src/plugins/imapsieve/ext-imapsieve-environment.c
new file mode 100644
index 0000000..2b61cd4
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/ext-imapsieve-environment.c
@@ -0,0 +1,184 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+#include "lib.h"
+#include "array.h"
+#include "mail-storage.h"
+
+#include "sieve-extensions.h"
+#include "sieve-commands.h"
+#include "sieve-validator.h"
+#include "sieve-generator.h"
+#include "sieve-runtime.h"
+
+#include "sieve-ext-environment.h"
+
+#include "ext-imapsieve-common.h"
+
+/*
+ * Environment items
+ */
+
+/* imap.user */
+
+static const char *
+envit_imap_user_get_value(const struct sieve_runtime_env *renv,
+			  const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+
+	return eenv->svinst->username;
+}
+
+const struct sieve_environment_item imap_user_env_item = {
+	.name = "imap.user",
+	.get_value = envit_imap_user_get_value
+};
+
+/* imap.email */
+
+static const char *
+envit_imap_email_get_value(const struct sieve_runtime_env *renv,
+			   const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct smtp_address *user_email =
+		sieve_get_user_email(eenv->svinst);
+
+	if (user_email == NULL)
+		return NULL;
+	return smtp_address_encode(user_email);
+}
+
+const struct sieve_environment_item imap_email_env_item = {
+	.name = "imap.email",
+	.get_value = envit_imap_email_get_value
+};
+
+/* imap.cause */
+
+static const char *
+envit_imap_cause_get_value(const struct sieve_runtime_env *renv,
+			   const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct sieve_script_env *senv = eenv->scriptenv;
+	struct imap_sieve_context *isctx =
+		(struct imap_sieve_context *)senv->script_context;
+
+	return isctx->event.cause;
+}
+
+const struct sieve_environment_item imap_cause_env_item = {
+	.name = "imap.cause",
+	.get_value = envit_imap_cause_get_value
+};
+
+/* imap.mailbox */
+
+static const char *
+envit_imap_mailbox_get_value(const struct sieve_runtime_env *renv,
+			     const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct sieve_message_data *msgdata = eenv->msgdata;
+
+	return mailbox_get_vname(msgdata->mail->box);
+}
+
+const struct sieve_environment_item imap_mailbox_env_item = {
+	.name = "imap.mailbox",
+	.get_value = envit_imap_mailbox_get_value
+};
+
+
+/* imap.changedflags */
+
+static const char *
+envit_imap_changedflags_get_value(const struct sieve_runtime_env *renv,
+				  const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct sieve_script_env *senv = eenv->scriptenv;
+	struct imap_sieve_context *isctx =
+		(struct imap_sieve_context *)senv->script_context;
+
+	return isctx->event.changed_flags;
+}
+
+const struct sieve_environment_item imap_changedflags_env_item = {
+	.name = "imap.changedflags",
+	.get_value = envit_imap_changedflags_get_value
+};
+
+/* vnd.dovecot.mailbox-from */
+
+static const char *
+envit_vnd_mailbox_from_get_value(const struct sieve_runtime_env *renv,
+				 const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct sieve_script_env *senv = eenv->scriptenv;
+	struct imap_sieve_context *isctx =
+		(struct imap_sieve_context *)senv->script_context;
+
+	return mailbox_get_vname(isctx->event.src_mailbox);
+}
+
+const struct sieve_environment_item vnd_mailbox_from_env_item = {
+	.name = "vnd.dovecot.mailbox-from",
+	.get_value = envit_vnd_mailbox_from_get_value
+};
+
+/* vnd.dovecot.mailbox-to */
+
+static const char *
+envit_vnd_mailbox_to_get_value(const struct sieve_runtime_env *renv,
+			       const char *name ATTR_UNUSED)
+{
+	const struct sieve_execute_env *eenv = renv->exec_env;
+	const struct sieve_script_env *senv = eenv->scriptenv;
+	struct imap_sieve_context *isctx =
+		(struct imap_sieve_context *)senv->script_context;
+
+	return mailbox_get_vname(isctx->event.dest_mailbox);
+}
+
+const struct sieve_environment_item vnd_mailbox_to_env_item = {
+	.name = "vnd.dovecot.mailbox-to",
+	.get_value = envit_vnd_mailbox_to_get_value
+};
+
+/*
+ * Register
+ */
+
+void ext_imapsieve_environment_items_register(
+	const struct sieve_extension *ext, const struct sieve_runtime_env *renv)
+{
+	const struct sieve_extension *env_ext =
+		(const struct sieve_extension *)ext->context;
+
+	sieve_environment_item_register(env_ext, renv->interp,
+					&imap_user_env_item);
+	sieve_environment_item_register(env_ext, renv->interp,
+					&imap_email_env_item);
+	sieve_environment_item_register(env_ext, renv->interp,
+					&imap_cause_env_item);
+	sieve_environment_item_register(env_ext, renv->interp,
+					&imap_mailbox_env_item);
+	sieve_environment_item_register(env_ext, renv->interp,
+					&imap_changedflags_env_item);
+}
+
+void ext_imapsieve_environment_vendor_items_register
+(const struct sieve_extension *ext, const struct sieve_runtime_env *renv)
+{
+	const struct sieve_extension *env_ext =
+		(const struct sieve_extension *)ext->context;
+
+	sieve_environment_item_register(env_ext, renv->interp,
+					&vnd_mailbox_from_env_item);
+	sieve_environment_item_register(env_ext, renv->interp,
+					&vnd_mailbox_to_env_item);
+}
diff --git a/pigeonhole/src/plugins/imapsieve/ext-imapsieve.c b/pigeonhole/src/plugins/imapsieve/ext-imapsieve.c
new file mode 100644
index 0000000..64dfc07
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/ext-imapsieve.c
@@ -0,0 +1,168 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+/* Extension imapsieve
+ * -------------------
+ *
+ * Authors: Stephan Bosch
+ * Specification: RFC 6785
+ * Implementation: full
+ * Status: experimental
+ *
+ */
+
+#include "lib.h"
+
+#include "sieve-extensions.h"
+#include "sieve-commands.h"
+#include "sieve-binary.h"
+
+#include "sieve-validator.h"
+#include "sieve-interpreter.h"
+
+#include "sieve-ext-environment.h"
+
+#include "ext-imapsieve-common.h"
+
+/*
+ * Extension
+ */
+
+static bool ext_imapsieve_load
+	(const struct sieve_extension *ext, void **context);
+static bool ext_vnd_imapsieve_load
+	(const struct sieve_extension *ext, void **context);
+static bool ext_vnd_imapsieve_validator_load
+	(const struct sieve_extension *ext, struct sieve_validator *valdtr);
+
+static bool ext_imapsieve_interpreter_load
+	(const struct sieve_extension *ext,
+		const struct sieve_runtime_env *renv,
+		sieve_size_t *address ATTR_UNUSED);
+
+#ifdef __IMAPSIEVE_DUMMY
+const struct sieve_extension_def imapsieve_extension_dummy = {
+#else
+const struct sieve_extension_def imapsieve_extension = {
+#endif
+	.name = "imapsieve",
+	.load = ext_imapsieve_load,
+	.interpreter_load = ext_imapsieve_interpreter_load
+};
+
+#ifdef __IMAPSIEVE_DUMMY
+const struct sieve_extension_def vnd_imapsieve_extension_dummy = {
+#else
+const struct sieve_extension_def vnd_imapsieve_extension = {
+#endif
+	.name = "vnd.dovecot.imapsieve",
+	.load = ext_vnd_imapsieve_load,
+	.interpreter_load = ext_imapsieve_interpreter_load,
+	.validator_load = ext_vnd_imapsieve_validator_load
+};
+
+/*
+ * Context
+ */
+
+static bool ext_imapsieve_load
+(const struct sieve_extension *ext, void **context)
+{
+	*context = (void*)
+		sieve_ext_environment_require_extension(ext->svinst);
+	return TRUE;
+}
+
+static bool ext_vnd_imapsieve_load
+(const struct sieve_extension *ext, void **context)
+{
+	*context = (void*)sieve_extension_require
+#ifdef __IMAPSIEVE_DUMMY
+		(ext->svinst, &imapsieve_extension_dummy, TRUE);
+#else
+		(ext->svinst, &imapsieve_extension, TRUE);
+#endif
+	return TRUE;
+}
+
+/*
+ * Validator
+ */
+
+static bool ext_vnd_imapsieve_validator_load
+(const struct sieve_extension *ext ATTR_UNUSED,
+	struct sieve_validator *valdtr)
+{
+	const struct sieve_extension *ims_ext;
+
+	/* Load environment extension implicitly */
+
+	ims_ext = sieve_validator_extension_load_implicit
+#ifdef __IMAPSIEVE_DUMMY
+		(valdtr, imapsieve_extension_dummy.name);
+#else
+		(valdtr, imapsieve_extension.name);
+#endif
+	if ( ims_ext == NULL )
+		return FALSE;
+
+	return TRUE;
+}
+
+/*
+ * Interpreter
+ */
+
+static int ext_imapsieve_interpreter_run
+	(const struct sieve_extension *this_ext,
+		const struct sieve_runtime_env *renv,
+		void *context, bool deferred);
+
+const struct sieve_interpreter_extension
+imapsieve_interpreter_extension = {
+#ifdef __IMAPSIEVE_DUMMY
+	.ext_def = &imapsieve_extension_dummy,
+#else
+	.ext_def = &imapsieve_extension,
+#endif
+	.run = ext_imapsieve_interpreter_run
+};
+
+static bool ext_imapsieve_interpreter_load
+(const struct sieve_extension *ext ATTR_UNUSED,
+	const struct sieve_runtime_env *renv,
+	sieve_size_t *address ATTR_UNUSED)
+{
+	sieve_interpreter_extension_register(renv->interp,
+		ext, &imapsieve_interpreter_extension, NULL);
+	return TRUE;
+}
+
+#ifdef __IMAPSIEVE_DUMMY
+static int ext_imapsieve_interpreter_run
+(const struct sieve_extension *ext ATTR_UNUSED,
+	const struct sieve_runtime_env *renv,
+	void *context ATTR_UNUSED, bool deferred)
+{
+	if ( !deferred ) {
+		sieve_runtime_error(renv, NULL,
+			"the imapsieve extension cannot be used outside IMAP");
+	}
+	return SIEVE_EXEC_FAILURE;
+}
+#else
+static int ext_imapsieve_interpreter_run
+(const struct sieve_extension *ext,
+	const struct sieve_runtime_env *renv,
+	void *context ATTR_UNUSED, bool deferred ATTR_UNUSED)
+{
+	if (ext->def == &vnd_imapsieve_extension) {
+		const struct sieve_extension *ims_ext =
+			(const struct sieve_extension *)ext->context;
+		ext_imapsieve_environment_vendor_items_register(ims_ext, renv);
+	} else {
+		ext_imapsieve_environment_items_register(ext, renv);
+	}
+	return SIEVE_EXEC_OK;
+}
+#endif
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.c b/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.c
new file mode 100644
index 0000000..0c9b52e
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.c
@@ -0,0 +1,60 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file */
+
+#include "imap-common.h"
+#include "str.h"
+
+#include "imap-sieve.h"
+#include "imap-sieve-storage.h"
+
+#include "imap-sieve-plugin.h"
+
+static struct module *imap_sieve_module;
+static imap_client_created_func_t *next_hook_client_created;
+
+/*
+ * Client
+ */
+
+static void imap_sieve_client_created(struct client **clientp)
+{
+	struct client *client = *clientp;
+	struct mail_user *user = client->user;
+	const char *url = NULL;
+
+	if (mail_user_is_plugin_loaded(user, imap_sieve_module)) {
+		url = mail_user_plugin_getenv(user, "imapsieve_url");
+		// FIXME: parse the URL and report error if it is bad
+		if (url != NULL && strncasecmp(url, "sieve:", 6) == 0) {
+			client_add_capability(client, t_strconcat(
+				"IMAPSIEVE=", url, NULL));
+		} else {
+			url = NULL;
+		}
+
+		imap_sieve_storage_client_created(client, (url != NULL));
+	}
+
+	if (next_hook_client_created != NULL)
+		next_hook_client_created(clientp);
+}
+
+/*
+ * Plugin
+ */
+
+const char *imap_sieve_plugin_version = DOVECOT_ABI_VERSION;
+const char imap_sieve_plugin_binary_dependency[] = "imap";
+
+void imap_sieve_plugin_init(struct module *module)
+{
+	imap_sieve_module = module;
+	next_hook_client_created =
+		imap_client_created_hook_set(imap_sieve_client_created);
+	imap_sieve_storage_init(module);
+}
+
+void imap_sieve_plugin_deinit(void)
+{
+	imap_sieve_storage_deinit();
+	imap_client_created_hook_set(next_hook_client_created);
+}
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.h b/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.h
new file mode 100644
index 0000000..0271710
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve-plugin.h
@@ -0,0 +1,11 @@
+#ifndef IMAP_SIEVE_PLUGIN_H
+#define IMAP_SIEVE_PLUGIN_H
+
+struct module;
+
+extern const char imap_sieve_plugin_binary_dependency[];
+
+void imap_sieve_plugin_init(struct module *module);
+void imap_sieve_plugin_deinit(void);
+
+#endif
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.c b/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.c
new file mode 100644
index 0000000..f8e5efe
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.c
@@ -0,0 +1,1273 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file */
+
+#include "imap-common.h"
+#include "array.h"
+#include "hash.h"
+#include "str.h"
+#include "istream.h"
+#include "ostream.h"
+#include "module-context.h"
+#include "mail-user.h"
+#include "mail-storage-private.h"
+#include "mailbox-attribute.h"
+#include "mailbox-list-private.h"
+#include "imap-match.h"
+#include "imap-util.h"
+
+#include "imap-sieve.h"
+#include "imap-sieve-storage.h"
+
+#define MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT "imapsieve/script"
+#define MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT "imapsieve/script"
+
+#define IMAP_SIEVE_USER_CONTEXT(obj) \
+	MODULE_CONTEXT(obj, imap_sieve_user_module)
+#define IMAP_SIEVE_USER_CONTEXT_REQUIRE(obj) \
+	MODULE_CONTEXT_REQUIRE(obj, imap_sieve_user_module)
+#define IMAP_SIEVE_CONTEXT(obj) \
+	MODULE_CONTEXT(obj, imap_sieve_storage_module)
+#define IMAP_SIEVE_CONTEXT_REQUIRE(obj) \
+	MODULE_CONTEXT_REQUIRE(obj, imap_sieve_storage_module)
+#define IMAP_SIEVE_MAIL_CONTEXT(obj) \
+	MODULE_CONTEXT_REQUIRE(obj, imap_sieve_mail_module)
+
+struct imap_sieve_mailbox_rule;
+struct imap_sieve_user;
+struct imap_sieve_mailbox_event;
+struct imap_sieve_mailbox_transaction;
+struct imap_sieve_mail;
+
+enum imap_sieve_command {
+	IMAP_SIEVE_CMD_NONE = 0,
+	IMAP_SIEVE_CMD_APPEND,
+	IMAP_SIEVE_CMD_COPY,
+	IMAP_SIEVE_CMD_MOVE,
+	IMAP_SIEVE_CMD_STORE,
+	IMAP_SIEVE_CMD_OTHER
+};
+
+ARRAY_DEFINE_TYPE(imap_sieve_mailbox_rule,
+	struct imap_sieve_mailbox_rule *);
+ARRAY_DEFINE_TYPE(imap_sieve_mailbox_event,
+	struct imap_sieve_mailbox_event);
+
+HASH_TABLE_DEFINE_TYPE(imap_sieve_mailbox_rule,
+	struct imap_sieve_mailbox_rule *,
+	struct imap_sieve_mailbox_rule *);
+
+struct imap_sieve_mailbox_rule {
+	unsigned int index;
+	const char *mailbox;
+	const char *from;
+	const char *const *causes;
+	const char *before, *after;
+	const char *copy_source_after;
+};
+
+struct imap_sieve_user {
+	union mail_user_module_context module_ctx;
+	struct client *client;
+	struct imap_sieve *isieve;
+
+	enum imap_sieve_command cur_cmd;
+
+	HASH_TABLE_TYPE(imap_sieve_mailbox_rule) mbox_rules;
+	ARRAY_TYPE(imap_sieve_mailbox_rule) mbox_patterns;
+
+	bool sieve_active:1;
+	bool user_script:1;
+	bool expunge_discarded:1;
+};
+
+struct imap_sieve_mailbox_event {
+	uint32_t dest_mail_uid, src_mail_uid;
+	unsigned int save_seq;
+
+	const char *changed_flags;
+};
+
+struct imap_sieve_mailbox_transaction {
+	pool_t pool;
+
+	union mailbox_transaction_module_context module_ctx;
+
+	struct mailbox *src_box;
+	struct mailbox_transaction_context *src_mail_trans;
+
+	ARRAY_TYPE(imap_sieve_mailbox_event) events;
+};
+
+struct imap_sieve_mail {
+	union mail_module_context module_ctx;
+
+	string_t *flags;
+};
+
+static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_user_module,
+				  &mail_user_module_register);
+static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_storage_module,
+				  &mail_storage_module_register);
+static MODULE_CONTEXT_DEFINE_INIT(imap_sieve_mail_module,
+				  &mail_module_register);
+
+static void
+imap_sieve_mailbox_rules_get(struct mail_user *user,
+	struct mailbox *dst_box, struct mailbox *src_box,
+	const char *cause,
+	ARRAY_TYPE(imap_sieve_mailbox_rule) *rules);
+
+/*
+ * Logging
+ */
+
+static inline void
+imap_sieve_debug(struct mail_user *user,
+	const char *format, ...) ATTR_FORMAT(2, 3);
+static inline void
+imap_sieve_debug(struct mail_user *user,
+	const char *format, ...)
+{
+	va_list args;
+
+	if (user->mail_debug) {
+		va_start(args, format);
+		i_debug("imapsieve: %s",
+			t_strdup_vprintf(format, args));
+		va_end(args);
+	}
+}
+
+static inline void
+imap_sieve_warning(struct mail_user *user ATTR_UNUSED,
+	const char *format, ...) ATTR_FORMAT(2, 3);
+static inline void
+imap_sieve_warning(struct mail_user *user ATTR_UNUSED,
+	const char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	i_warning("imapsieve: %s",
+		t_strdup_vprintf(format, args));
+	va_end(args);
+}
+
+static inline void
+imap_sieve_mailbox_debug(struct mailbox *box,
+	const char *format, ...) ATTR_FORMAT(2, 3);
+static inline void
+imap_sieve_mailbox_debug(struct mailbox *box,
+	const char *format, ...)
+{
+	va_list args;
+
+	if (box->storage->user->mail_debug) {
+		va_start(args, format);
+		i_debug("imapsieve: mailbox %s: %s",
+			mailbox_get_vname(box),
+			t_strdup_vprintf(format, args));
+		va_end(args);
+	}
+}
+
+static inline void
+imap_sieve_mailbox_warning(struct mailbox *box,
+	const char *format, ...) ATTR_FORMAT(2, 3);
+static inline void
+imap_sieve_mailbox_warning(struct mailbox *box,
+	const char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	i_warning("imapsieve: mailbox %s: %s",
+		mailbox_get_vname(box),
+		t_strdup_vprintf(format, args));
+	va_end(args);
+}
+
+static inline void
+imap_sieve_mailbox_error(struct mailbox *box,
+	const char *format, ...) ATTR_FORMAT(2, 3);
+static inline void
+imap_sieve_mailbox_error(struct mailbox *box,
+	const char *format, ...)
+{
+	va_list args;
+
+	va_start(args, format);
+	i_error("imapsieve: mailbox %s: %s",
+		mailbox_get_vname(box),
+		t_strdup_vprintf(format, args));
+	va_end(args);
+}
+
+/*
+ * Events
+ */
+
+static int imap_sieve_mailbox_get_script_real
+(struct mailbox *box,
+	const char **script_name_r)
+{
+	struct mail_user *user = box->storage->user;
+	struct mail_attribute_value value;
+	int ret;
+
+	*script_name_r = NULL;
+
+	/* get the name of the Sieve script from mailbox METADATA */
+	if ((ret=mailbox_attribute_get(box, MAIL_ATTRIBUTE_TYPE_SHARED,
+			MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT, &value)) < 0) {
+		imap_sieve_mailbox_error(box,
+			"Failed to read /shared/"
+			MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+			"mailbox attribute: %s",
+			mailbox_get_last_internal_error(box, NULL));
+		return -1;
+	}
+
+	if (ret > 0) {
+		imap_sieve_mailbox_debug(box,
+			"Mailbox attribute /shared/"
+			MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+			"points to Sieve script `%s'", value.value);
+
+	/* if not found, get the name of the Sieve script from
+	   server METADATA */
+	} else {
+		struct mail_namespace *ns;
+		struct mailbox *inbox;
+
+		imap_sieve_mailbox_debug(box,
+			"Mailbox attribute /shared/"
+			MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+			"not found");
+
+		ns = mail_namespace_find_inbox(user->namespaces);
+		inbox = mailbox_alloc(ns->list, "INBOX",
+			MAILBOX_FLAG_READONLY);
+		ret = mailbox_attribute_get(inbox,
+			MAIL_ATTRIBUTE_TYPE_SHARED,
+			MAILBOX_ATTRIBUTE_PREFIX_DOVECOT_PVT_SERVER
+			MAILBOX_ATTRIBUTE_IMAPSIEVE_SCRIPT, &value);
+
+		if (ret <= 0) {
+			if (ret < 0) {
+				imap_sieve_mailbox_error(box,
+					"Failed to read /shared/"
+					MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+					"server attribute: %s",
+					mailbox_get_last_internal_error(inbox, NULL));
+			} else if (ret == 0) {
+				imap_sieve_mailbox_debug(box,
+					"Server attribute /shared/"
+					MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+					"not found");
+			}
+			mailbox_free(&inbox);
+			return ret;
+		}
+		mailbox_free(&inbox);
+
+		imap_sieve_mailbox_debug(box,
+			"Server attribute /shared/"
+			MAIL_SERVER_ATTRIBUTE_IMAPSIEVE_SCRIPT" "
+			"points to Sieve script `%s'", value.value);
+	}
+
+	*script_name_r = value.value;
+	return 1;
+}
+
+static int imap_sieve_mailbox_get_script
+(struct mailbox *box, const char **script_name_r)
+{
+	int ret;
+
+	ret = imap_sieve_mailbox_get_script_real
+		(box, script_name_r);
+	return ret;
+}
+
+static struct imap_sieve_mailbox_event *
+imap_sieve_create_mailbox_event
+(struct mailbox_transaction_context *t, struct mail *dest_mail)
+{
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
+	struct imap_sieve_mailbox_event *event;
+
+	if (!array_is_created(&ismt->events))
+		i_array_init(&ismt->events, 64);
+
+	event = array_append_space(&ismt->events);
+	event->save_seq = t->save_count;
+	event->dest_mail_uid = dest_mail->uid;
+	return event;
+}
+
+static void imap_sieve_add_mailbox_event
+(struct mailbox_transaction_context *t,
+	struct mail *dest_mail, struct mailbox *src_box,
+	const char *changed_flags)
+{
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
+	struct imap_sieve_mailbox_event *event;
+
+	i_assert(ismt->src_box == NULL || ismt->src_box == src_box);
+	ismt->src_box = src_box;
+
+	event = imap_sieve_create_mailbox_event(t, dest_mail);
+	event->changed_flags = p_strdup(ismt->pool, changed_flags);
+}
+
+static void imap_sieve_add_mailbox_copy_event
+(struct mailbox_transaction_context *t,
+	struct mail *dest_mail, struct mail *src_mail)
+{
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT_REQUIRE(t);
+	struct imap_sieve_mailbox_event *event;
+
+	i_assert(ismt->src_box == NULL || ismt->src_box == src_mail->box);
+	i_assert(ismt->src_mail_trans == NULL ||
+		ismt->src_mail_trans == src_mail->transaction);
+
+	ismt->src_box = src_mail->box;
+	ismt->src_mail_trans = src_mail->transaction;
+
+	event = imap_sieve_create_mailbox_event(t, dest_mail);
+	event->src_mail_uid = src_mail->uid;
+}
+
+/*
+ * Mail
+ */
+
+static void
+imap_sieve_mail_update_flags(struct mail *_mail,
+	enum modify_type modify_type, enum mail_flags flags)
+{
+	struct mail_private *mail = (struct mail_private *)_mail;
+	struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
+	enum mail_flags old_flags, new_flags, changed_flags;
+
+	old_flags = mail_get_flags(_mail);
+	ismail->module_ctx.super.update_flags(_mail, modify_type, flags);
+	new_flags = mail_get_flags(_mail);
+
+	changed_flags = old_flags ^ new_flags;
+	if (changed_flags == 0)
+		return;
+
+	if (ismail->flags == NULL)
+		ismail->flags = str_new(default_pool, 64);
+	imap_write_flags(ismail->flags, changed_flags, NULL);
+}
+
+static void
+imap_sieve_mail_update_keywords(struct mail *_mail,
+	enum modify_type modify_type, struct mail_keywords *keywords)
+{
+	struct mail_private *mail = (struct mail_private *)_mail;
+	struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
+	const char *const *old_keywords, *const *new_keywords;
+	unsigned int i, j;
+
+	old_keywords = mail_get_keywords(_mail);
+	ismail->module_ctx.super.update_keywords(_mail, modify_type, keywords);
+	new_keywords = mail_get_keywords(_mail);
+
+	if (ismail->flags == NULL)
+		ismail->flags = str_new(default_pool, 64);
+
+	/* Removed flags */
+	for (i = 0; old_keywords[i] != NULL; i++) {
+		for (j = 0; new_keywords[j] != NULL; j++) {
+			if (strcmp(old_keywords[i], new_keywords[j]) == 0)
+				break;
+		}
+		if (new_keywords[j] == NULL) {
+			if (str_len(ismail->flags) > 0)
+				str_append_c(ismail->flags, ' ');
+			str_append(ismail->flags, old_keywords[i]);
+		}
+	}
+
+	/* Added flags */
+	for (i = 0; new_keywords[i] != NULL; i++) {
+		for (j = 0; old_keywords[j] != NULL; j++) {
+			if (strcmp(new_keywords[i], old_keywords[j]) == 0)
+				break;
+		}
+		if (old_keywords[j] == NULL) {
+			if (str_len(ismail->flags) > 0)
+				str_append_c(ismail->flags, ' ');
+			str_append(ismail->flags, new_keywords[i]);
+		}
+	}
+}
+
+static void imap_sieve_mail_close(struct mail *_mail)
+{
+	struct mail_private *mail = (struct mail_private *)_mail;
+	struct mailbox_transaction_context *t = _mail->transaction;
+	struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
+
+	if (ismail->flags != NULL && str_len(ismail->flags) > 0) {
+		if (!_mail->expunged) {
+			imap_sieve_mailbox_debug(_mail->box,
+				"FLAG event (changed flags: %s)",
+				str_c(ismail->flags));
+
+			imap_sieve_add_mailbox_event(t,
+				_mail, _mail->box, str_c(ismail->flags));
+		}
+		str_truncate(ismail->flags, 0);
+	}
+
+	ismail->module_ctx.super.close(_mail);
+}
+
+static void imap_sieve_mail_free(struct mail *_mail)
+{
+	struct mail_private *mail = (struct mail_private *)_mail;
+	struct imap_sieve_mail *ismail = IMAP_SIEVE_MAIL_CONTEXT(mail);
+	string_t *flags = ismail->flags;
+
+	ismail->module_ctx.super.free(_mail);
+
+	if (flags != NULL)
+		str_free(&flags);
+}
+
+static void imap_sieve_mail_allocated(struct mail *_mail)
+{
+	struct mail_private *mail = (struct mail_private *)_mail;
+	struct imap_sieve_mailbox_transaction *ismt =
+		IMAP_SIEVE_CONTEXT(_mail->transaction);
+	struct mail_user *user = _mail->box->storage->user;
+	struct imap_sieve_user *isuser =
+		IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	struct mail_vfuncs *v = mail->vlast;
+	struct imap_sieve_mail *ismail;
+
+	if (ismt == NULL || isuser->sieve_active)
+		return;
+
+	ismail = p_new(mail->pool, struct imap_sieve_mail, 1);
+	ismail->module_ctx.super = *v;
+	mail->vlast = &ismail->module_ctx.super;
+
+	v->close = imap_sieve_mail_close;
+	v->free = imap_sieve_mail_free;
+	v->update_flags = imap_sieve_mail_update_flags;
+	v->update_keywords = imap_sieve_mail_update_keywords;
+	MODULE_CONTEXT_SET(mail, imap_sieve_mail_module, ismail);
+}
+
+/*
+ * Save/copy
+ */
+
+static int
+imap_sieve_mailbox_copy(struct mail_save_context *ctx, struct mail *mail)
+{
+	struct mailbox_transaction_context *t = ctx->transaction;
+	struct mail_storage *storage = t->box->storage;
+	struct mail_user *user = storage->user;
+	struct imap_sieve_user *isuser =
+		IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	union mailbox_module_context *lbox =
+		IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
+	struct imap_sieve_mailbox_transaction *ismt =
+		IMAP_SIEVE_CONTEXT(t);
+
+	if (lbox->super.copy(ctx, mail) < 0)
+		return -1;
+
+	if (ismt != NULL && !isuser->sieve_active &&
+		!ctx->dest_mail->expunged &&
+		(isuser->cur_cmd == IMAP_SIEVE_CMD_COPY ||
+			isuser->cur_cmd == IMAP_SIEVE_CMD_MOVE)) {
+		imap_sieve_mailbox_debug(t->box, "%s event",
+			(isuser->cur_cmd == IMAP_SIEVE_CMD_COPY ?
+				"COPY" : "MOVE"));
+		imap_sieve_add_mailbox_copy_event(t, ctx->dest_mail,
+						  ctx->copy_src_mail);
+	}
+
+	return 0;
+}
+
+static int
+imap_sieve_mailbox_save_finish(struct mail_save_context *ctx)
+{
+	struct mailbox_transaction_context *t = ctx->transaction;
+	struct mailbox *box = t->box;
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
+	union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(box);
+	struct mail_user *user = box->storage->user;
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	struct mail *dest_mail = ctx->copying_via_save ? NULL : ctx->dest_mail;
+
+	if (lbox->super.save_finish(ctx) < 0)
+		return -1;
+
+	if (ismt != NULL && !isuser->sieve_active &&
+		dest_mail != NULL && !dest_mail->expunged &&
+		isuser->cur_cmd == IMAP_SIEVE_CMD_APPEND) {
+
+		imap_sieve_mailbox_debug(t->box, "APPEND event");
+		imap_sieve_add_mailbox_event(t, dest_mail, box, NULL);
+	}
+	return 0;
+}
+
+/*
+ * Mailbox
+ */
+
+static struct mailbox_transaction_context *
+imap_sieve_mailbox_transaction_begin(struct mailbox *box,
+			 enum mailbox_transaction_flags flags,
+			 const char *reason)
+{
+	union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(box);
+	struct mail_user *user = box->storage->user;
+	struct imap_sieve_user *isuser = 	IMAP_SIEVE_USER_CONTEXT(user);
+	struct mailbox_transaction_context *t;
+	struct imap_sieve_mailbox_transaction *ismt;
+	pool_t pool;
+
+	/* commence parent transaction */
+	t = lbox->super.transaction_begin(box, flags, reason);
+
+	if (isuser == NULL || isuser->sieve_active ||
+		isuser->cur_cmd == IMAP_SIEVE_CMD_NONE)
+		return t;
+
+	i_assert(isuser->client != NULL);
+
+	pool = pool_alloconly_create("imap_sieve_mailbox_transaction", 1024);
+	ismt = p_new(pool, struct imap_sieve_mailbox_transaction, 1);
+	ismt->pool = pool;
+	MODULE_CONTEXT_SET(t, imap_sieve_storage_module, ismt);
+
+	return t;
+}
+
+static void
+imap_sieve_mailbox_transaction_free
+(struct imap_sieve_mailbox_transaction *ismt)
+{
+	if (array_is_created(&ismt->events))
+		array_free(&ismt->events);
+	pool_unref(&ismt->pool);
+}
+
+static void
+imap_sieve_mailbox_run_copy_source(
+	struct imap_sieve_mailbox_transaction *ismt,
+	struct imap_sieve_run *isrun,
+	const struct imap_sieve_mailbox_event *mevent,
+	struct mail **src_mail, bool *fatal_r)
+{
+	struct mailbox *src_box = ismt->src_box;
+	int ret;
+
+	*fatal_r = FALSE;
+
+	if (isrun == NULL)
+		return;
+
+	i_assert(ismt->src_mail_trans->box == src_box);
+	i_assert(mevent->src_mail_uid > 0);
+
+	if (*src_mail == NULL)
+		*src_mail = mail_alloc(ismt->src_mail_trans, 0, NULL);
+
+	/* Select source message */
+	if (!mail_set_uid(*src_mail, mevent->src_mail_uid)) {
+		imap_sieve_mailbox_warning(src_box,
+			"Failed to find source message for Sieve event "
+			"(UID=%llu)", (unsigned long long)mevent->src_mail_uid);
+		return;
+	}
+
+	imap_sieve_mailbox_debug(src_box,
+		"Running copy_source_after scripts.");
+
+	/* Run scripts for source mail */
+	ret = imap_sieve_run_mail(isrun, *src_mail, NULL, fatal_r);
+	if (ret > 0) {
+		/* Discard */
+		mail_update_flags(*src_mail, MODIFY_ADD, MAIL_DELETED);
+	}
+}
+
+static int
+imap_sieve_mailbox_transaction_run(
+	struct imap_sieve_mailbox_transaction *ismt,
+	struct mailbox *dest_box,
+	struct mail_transaction_commit_changes *changes)
+{
+	static const char *wanted_headers[] = {
+		"From", "To", "Message-ID", "Subject", "Return-Path",
+		NULL
+	};
+	struct mailbox *src_box = ismt->src_box;
+	struct mail_user *user = dest_box->storage->user;
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	const struct imap_sieve_mailbox_event *mevent;
+	struct mailbox_header_lookup_ctx *headers_ctx;
+	struct mailbox_transaction_context *st;
+	struct mailbox *sbox;
+	struct imap_sieve_run *isrun, *isrun_src;
+	struct seq_range_iter siter;
+	const char *cause, *script_name = NULL;
+	bool can_discard;
+	struct mail *mail, *src_mail = NULL;
+	int ret;
+
+	if (ismt == NULL || !array_is_created(&ismt->events)) {
+		/* Nothing to do */
+		return 0;
+	}
+
+	i_assert(isuser->client != NULL);
+
+	/* Get user script for this mailbox */
+	if (isuser->user_script && imap_sieve_mailbox_get_script
+		(dest_box, &script_name) < 0) {
+		return 0; // FIXME: some errors may warrant -1
+	}
+
+	/* Make sure IMAPSIEVE is initialized for this user */
+	if (isuser->isieve == NULL)
+		isuser->isieve = imap_sieve_init(isuser->client);
+
+	can_discard = FALSE;
+	switch (isuser->cur_cmd) {
+	case IMAP_SIEVE_CMD_APPEND:
+		cause = "APPEND";
+		can_discard = TRUE;
+		break;
+	case IMAP_SIEVE_CMD_COPY:
+	case IMAP_SIEVE_CMD_MOVE:
+		cause = "COPY";
+		can_discard = TRUE;
+		break;
+	case IMAP_SIEVE_CMD_STORE:
+	case IMAP_SIEVE_CMD_OTHER:
+		cause = "FLAG";
+		break;
+	default:
+		i_unreached();
+	}
+
+	/* Initialize execution */
+	T_BEGIN {
+		ARRAY_TYPE(imap_sieve_mailbox_rule) mbrules;
+		ARRAY_TYPE(const_string) scripts_before, scripts_after;
+		ARRAY_TYPE(const_string) scripts_copy_source;
+		struct imap_sieve_mailbox_rule *rule;
+
+		/* Find matching rules */
+		t_array_init(&mbrules, 16);
+		imap_sieve_mailbox_rules_get
+			(user, dest_box, src_box, cause, &mbrules);
+
+		/* Apply all matched rules */
+		t_array_init(&scripts_before, 8);
+		t_array_init(&scripts_after, 8);
+		t_array_init(&scripts_copy_source, 4);
+		array_foreach_elem(&mbrules, rule) {
+			if (rule->before != NULL)
+				array_append(&scripts_before, &rule->before, 1);
+			if (rule->after != NULL)
+				array_append(&scripts_after, &rule->after, 1);
+			if (rule->copy_source_after != NULL)
+				array_append(&scripts_copy_source, &rule->copy_source_after, 1);
+		}
+		(void)array_append_space(&scripts_before);
+		(void)array_append_space(&scripts_after);
+
+		/* Initialize */
+		ret = imap_sieve_run_init
+			(isuser->isieve, dest_box, src_box, cause, script_name,
+				array_idx(&scripts_before, 0),
+				array_idx(&scripts_after, 0), &isrun);
+
+		/* Initialize source script execution */
+		isrun_src = NULL;
+		if (ret > 0 && ismt->src_mail_trans != NULL &&
+			isuser->cur_cmd == IMAP_SIEVE_CMD_COPY &&
+			array_count(&scripts_copy_source) > 0) {
+			const char *no_scripts = NULL;
+
+			(void)array_append_space(&scripts_copy_source);
+			if (imap_sieve_run_init(isuser->isieve,
+					dest_box, src_box, cause, NULL,
+					&no_scripts, array_idx(&scripts_copy_source, 0),
+					&isrun_src) <= 0)
+				isrun_src = NULL;
+		}
+	} T_END;
+
+	if (ret <= 0) {
+		// FIXME: temp fail should be handled properly
+		return 0;
+	}
+
+	/* Get synchronized view on the destination mailbox */
+	sbox = mailbox_alloc(dest_box->list, dest_box->vname, 0);
+	if (mailbox_sync(sbox, 0) < 0) {
+		mailbox_free(&sbox);
+		imap_sieve_run_deinit(&isrun);
+		if (isrun_src != NULL)
+			imap_sieve_run_deinit(&isrun_src);
+		return -1;
+	}
+
+	/* Create transaction for event messages */
+	st = mailbox_transaction_begin(sbox, 0, __func__);
+	headers_ctx = mailbox_header_lookup_init(sbox, wanted_headers);
+	mail = mail_alloc(st, 0, headers_ctx);
+	mailbox_header_lookup_unref(&headers_ctx);
+
+	/* Iterate through all events */
+	seq_range_array_iter_init(&siter, &changes->saved_uids);
+	array_foreach(&ismt->events, mevent) {
+		uint32_t uid;
+		bool fatal;
+
+		/* Determine UID for saved message */
+		if (mevent->dest_mail_uid > 0)
+			uid = mevent->dest_mail_uid;
+		else if (!seq_range_array_iter_nth(&siter, mevent->save_seq,
+						   &uid)) {
+			/* already gone for some reason */
+			imap_sieve_mailbox_debug(
+				sbox, "Message for Sieve event gone");
+			continue;
+		}
+
+		/* Select event message */
+		i_assert(uid > 0);
+		if (!mail_set_uid(mail, uid) || mail->expunged) {
+			/* already gone for some reason */
+			imap_sieve_mailbox_debug(sbox,
+				"Message for Sieve event gone (UID=%llu)",
+				(unsigned long long)uid);
+			continue;
+		}
+
+		/* Run scripts for this mail */
+		ret = imap_sieve_run_mail(isrun, mail, mevent->changed_flags,
+					  &fatal);
+		if (fatal)
+			break;
+
+		/* Handle the result */
+		if (ret < 0) {
+			/* Sieve error; keep */
+		} else {
+			if (ret <= 0 || !can_discard) {
+				/* Keep */
+			} else if (!isuser->expunge_discarded) {
+				/* Mark as \Deleted */
+				mail_update_flags(mail,
+						  MODIFY_ADD, MAIL_DELETED);
+			} else {
+				/* Expunge */
+				mail_expunge(mail);
+			}
+
+			imap_sieve_mailbox_run_copy_source(
+				ismt, isrun_src, mevent, &src_mail, &fatal);
+			if (fatal)
+				break;
+		}
+	}
+
+	/* Cleanup */
+	mail_free(&mail);
+	ret = mailbox_transaction_commit(&st);
+	if (src_mail != NULL)
+		mail_free(&src_mail);
+	imap_sieve_run_deinit(&isrun);
+	if (isrun_src != NULL)
+		imap_sieve_run_deinit(&isrun_src);
+	mailbox_free(&sbox);
+	return ret;
+}
+
+static int
+imap_sieve_mailbox_transaction_commit(
+	struct mailbox_transaction_context *t,
+	struct mail_transaction_commit_changes *changes_r)
+{
+	struct mailbox *box = t->box;
+	struct mail_user *user = box->storage->user;
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
+	union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	int ret = 0;
+
+	if ((lbox->super.transaction_commit(t, changes_r)) < 0)
+		ret = -1;
+	else if (ismt != NULL) {
+		isuser->sieve_active = TRUE;
+		if (imap_sieve_mailbox_transaction_run
+			(ismt, box, changes_r) < 0)
+			ret = -1;
+		isuser->sieve_active = FALSE;
+	}
+
+	if (ismt != NULL)
+		imap_sieve_mailbox_transaction_free(ismt);
+	return ret;
+}
+
+static void
+imap_sieve_mailbox_transaction_rollback(
+	struct mailbox_transaction_context *t)
+{
+	struct imap_sieve_mailbox_transaction *ismt = IMAP_SIEVE_CONTEXT(t);
+	union mailbox_module_context *lbox = IMAP_SIEVE_CONTEXT_REQUIRE(t->box);
+
+	lbox->super.transaction_rollback(t);
+
+	if (ismt != NULL)
+		imap_sieve_mailbox_transaction_free(ismt);
+}
+
+static void imap_sieve_mailbox_allocated(struct mailbox *box)
+{
+	struct mail_user *user = box->storage->user;
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	struct mailbox_vfuncs *v = box->vlast;
+	union mailbox_module_context *lbox;
+
+	if (isuser->client == NULL || isuser->sieve_active ||
+		(box->flags & MAILBOX_FLAG_READONLY) != 0)
+		return;
+
+	lbox = p_new(box->pool, union mailbox_module_context, 1);
+	lbox->super = *v;
+	box->vlast = &lbox->super;
+
+	v->copy = imap_sieve_mailbox_copy;
+	v->save_finish = imap_sieve_mailbox_save_finish;
+	v->transaction_begin = imap_sieve_mailbox_transaction_begin;
+	v->transaction_commit = imap_sieve_mailbox_transaction_commit;
+	v->transaction_rollback = imap_sieve_mailbox_transaction_rollback;
+	MODULE_CONTEXT_SET_SELF(box, imap_sieve_storage_module, lbox);
+}
+
+/*
+ * Mailbox rules
+ */
+
+static unsigned int imap_sieve_mailbox_rule_hash
+(const struct imap_sieve_mailbox_rule *rule)
+{
+	unsigned int hash = str_hash(rule->mailbox);
+
+	if (rule->from != NULL)
+		hash += str_hash(rule->from);
+	return hash;
+}
+
+static int imap_sieve_mailbox_rule_cmp
+(const struct imap_sieve_mailbox_rule *rule1,
+	const struct imap_sieve_mailbox_rule *rule2)
+{
+	int ret;
+
+	if ((ret=strcmp(rule1->mailbox, rule2->mailbox)) != 0)
+		return ret;
+	return null_strcmp(rule1->from, rule2->from);
+}
+
+static bool rule_pattern_has_wildcards(const char *pattern)
+{
+	for (; *pattern != '\0'; pattern++) {
+		if (*pattern == '%' || *pattern == '*')
+			return TRUE;
+	}
+	return FALSE;
+}
+
+static void
+imap_sieve_mailbox_rules_init(struct mail_user *user)
+{
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	string_t *identifier;
+	unsigned int i = 0;
+	size_t prefix_len;
+
+	if (hash_table_is_created(isuser->mbox_rules))
+		return;
+
+	hash_table_create(&isuser->mbox_rules, default_pool, 0,
+		imap_sieve_mailbox_rule_hash, imap_sieve_mailbox_rule_cmp);
+	i_array_init(&isuser->mbox_patterns, 8);
+
+	identifier = t_str_new(256);
+	str_append(identifier, "imapsieve_mailbox");
+	prefix_len = str_len(identifier);
+
+	for (i = 1; ; i++) {
+		struct imap_sieve_mailbox_rule *mbrule;
+		const char *setval;
+		size_t id_len;
+
+		str_truncate(identifier, prefix_len);
+		str_printfa(identifier, "%u", i);
+		id_len = str_len(identifier);
+
+		str_append(identifier, "_name");
+		setval = mail_user_plugin_getenv
+			(user, str_c(identifier));
+		if (setval == NULL || *setval == '\0')
+			break;
+		setval = t_str_trim(setval, "\t ");
+		if (strcasecmp(setval, "INBOX") == 0)
+			setval = t_str_ucase(setval);
+
+		mbrule = p_new(user->pool,
+			struct imap_sieve_mailbox_rule, 1);
+		mbrule->index = i;
+		mbrule->mailbox = p_strdup(user->pool, setval);
+
+		str_truncate(identifier, id_len);
+		str_append(identifier, "_from");
+		setval = mail_user_plugin_getenv(user, str_c(identifier));
+		if (setval != NULL && *setval != '\0') {
+			setval = t_str_trim(setval, "\t ");
+			if (strcasecmp(setval, "INBOX") == 0)
+				setval = t_str_ucase(setval);
+			mbrule->from = p_strdup(user->pool, setval);
+			if (strcmp(mbrule->from, "*") == 0)
+				mbrule->from = NULL;
+		}
+
+		if ((strcmp(mbrule->mailbox, "*") == 0 ||
+				!rule_pattern_has_wildcards(mbrule->mailbox)) &&
+			(mbrule->from == NULL ||
+				!rule_pattern_has_wildcards(mbrule->from)) &&
+			hash_table_lookup(isuser->mbox_rules, mbrule) != NULL) {
+			imap_sieve_warning(user,
+				"Duplicate static mailbox rule [%u] for mailbox `%s' "
+				"(skipped)", i, mbrule->mailbox);
+			continue;
+		}
+
+		str_truncate(identifier, id_len);
+		str_append(identifier, "_causes");
+		setval = mail_user_plugin_getenv(user, str_c(identifier));
+		if (setval != NULL && *setval != '\0') {
+			const char *const *cause;
+
+			mbrule->causes = (const char *const *)
+				p_strsplit_spaces(user->pool, setval, " \t,");
+
+			for (cause = mbrule->causes; *cause != NULL; cause++) {
+				if (!imap_sieve_event_cause_valid(*cause))
+					break;
+			}
+			if (*cause != NULL) {
+				imap_sieve_warning(user,
+					"Static mailbox rule [%u] has invalid event cause `%s' "
+					"(skipped)", i, *cause);
+				continue;
+			}
+		}
+
+		str_truncate(identifier, id_len);
+		str_append(identifier, "_before");
+		setval = mail_user_plugin_getenv(user, str_c(identifier));
+		mbrule->before = p_strdup_empty(user->pool, setval);
+
+		str_truncate(identifier, id_len);
+		str_append(identifier, "_after");
+		setval = mail_user_plugin_getenv(user, str_c(identifier));
+		mbrule->after = p_strdup_empty(user->pool, setval);
+
+		str_truncate(identifier, id_len);
+		str_append(identifier, "_copy_source_after");
+		setval = mail_user_plugin_getenv(user, str_c(identifier));
+		mbrule->copy_source_after = p_strdup_empty(user->pool, setval);
+
+		if (user->mail_debug) {
+			imap_sieve_debug(user, "Static mailbox rule [%u]: "
+				"mailbox=`%s' from=`%s' causes=(%s) => "
+				"before=%s after=%s%s",
+				mbrule->index, mbrule->mailbox,
+				(mbrule->from == NULL ? "*" : mbrule->from),
+				t_strarray_join(mbrule->causes, " "),
+				(mbrule->before == NULL ? "(none)" :
+					t_strconcat("`", mbrule->before, "'", NULL)),
+				(mbrule->after == NULL ? "(none)" :
+					t_strconcat("`", mbrule->after, "'", NULL)),
+				(mbrule->copy_source_after == NULL ? "":
+					t_strconcat(" copy_source_after=`",
+						mbrule->copy_source_after, "'", NULL)));
+		}
+
+		if ((strcmp(mbrule->mailbox, "*") == 0 ||
+				!rule_pattern_has_wildcards(mbrule->mailbox)) &&
+			(mbrule->from == NULL ||
+				!rule_pattern_has_wildcards(mbrule->from))) {
+			hash_table_insert(isuser->mbox_rules, mbrule, mbrule);
+		} else {
+			array_append(&isuser->mbox_patterns, &mbrule, 1);
+		}
+	}
+
+	if (i == 0)
+		imap_sieve_debug(user, "No static mailbox rules");
+}
+
+static bool
+imap_sieve_mailbox_rule_match_cause
+(struct imap_sieve_mailbox_rule *rule, const char *cause)
+{
+	const char *const *cp;
+
+	if (rule->causes == NULL || *rule->causes == NULL)
+		return TRUE;
+
+	for (cp = rule->causes; *cp != NULL; cp++) {
+		if (strcasecmp(cause, *cp) == 0)
+			return TRUE;
+	}
+	return FALSE;
+}
+
+static void
+imap_sieve_mailbox_rules_match_patterns(struct mail_user *user,
+	struct mailbox *dst_box, struct mailbox *src_box,
+	const char *cause,
+	ARRAY_TYPE(imap_sieve_mailbox_rule) *rules)
+{
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	struct imap_sieve_mailbox_rule *rule;
+	struct mail_namespace *dst_ns, *src_ns;
+
+	if (array_count(&isuser->mbox_patterns) == 0)
+		return;
+
+	dst_ns = mailbox_get_namespace(dst_box);
+	src_ns = (src_box == NULL ? NULL :
+		mailbox_get_namespace(src_box));
+
+	array_foreach_elem(&isuser->mbox_patterns, rule) {
+		struct imap_match_glob *glob;
+
+		if (src_ns == NULL && rule->from != NULL)
+			continue;
+		if (!imap_sieve_mailbox_rule_match_cause(rule, cause))
+			continue;
+
+		if (strcmp(rule->mailbox, "*") != 0) {
+			glob = imap_match_init(pool_datastack_create(),
+				rule->mailbox, TRUE, mail_namespace_get_sep(dst_ns));
+			if (imap_match(glob, mailbox_get_vname(dst_box))
+				!= IMAP_MATCH_YES)
+				continue;
+		}
+		if (rule->from != NULL) {
+			glob = imap_match_init(pool_datastack_create(),
+				rule->from, TRUE, mail_namespace_get_sep(src_ns));
+			if (imap_match(glob, mailbox_get_vname(src_box))
+				!= IMAP_MATCH_YES)
+				continue;
+		}
+
+		imap_sieve_debug(user,
+			"Matched static mailbox rule [%u]",
+			rule->index);
+		array_append(rules, &rule, 1);
+	}
+}
+
+static void
+imap_sieve_mailbox_rules_match(struct mail_user *user,
+	const char *dst_box, const char *src_box,
+	const char *cause,
+	ARRAY_TYPE(imap_sieve_mailbox_rule) *rules)
+{
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	struct imap_sieve_mailbox_rule lookup_rule;
+	struct imap_sieve_mailbox_rule *rule;
+
+	i_zero(&lookup_rule);
+	lookup_rule.mailbox = dst_box;
+	lookup_rule.from = src_box;
+	rule = hash_table_lookup(isuser->mbox_rules, &lookup_rule);
+
+	if (rule != NULL &&
+		imap_sieve_mailbox_rule_match_cause(rule, cause)) {
+		struct imap_sieve_mailbox_rule *const *rule_idx;
+		unsigned int insert_idx = array_count(rules);
+
+		/* Insert sorted by rule index */
+		array_foreach(rules, rule_idx) {
+			if (rule->index < (*rule_idx)->index) {
+				insert_idx = array_foreach_idx(rules, rule_idx);
+				break;
+			}
+		}
+		array_insert(rules, insert_idx, &rule, 1);
+
+		imap_sieve_debug(user,
+			"Matched static mailbox rule [%u]",
+			rule->index);
+	}
+}
+
+static void
+imap_sieve_mailbox_rules_get(struct mail_user *user,
+	struct mailbox *dst_box, struct mailbox *src_box,
+	const char *cause,
+	ARRAY_TYPE(imap_sieve_mailbox_rule) *rules)
+{
+	const char *dst_name, *src_name;
+
+	imap_sieve_mailbox_rules_init(user);
+
+	imap_sieve_mailbox_rules_match_patterns
+		(user, dst_box, src_box, cause, rules);
+
+	dst_name = mailbox_get_vname(dst_box);
+	src_name = (src_box == NULL ? NULL :
+		mailbox_get_vname(src_box));
+
+	imap_sieve_mailbox_rules_match
+		(user, dst_name, src_name, cause, rules);
+	imap_sieve_mailbox_rules_match
+		(user, "*", src_name, cause, rules);
+	if (src_name != NULL) {
+		imap_sieve_mailbox_rules_match
+			(user, dst_name, NULL, cause, rules);
+		imap_sieve_mailbox_rules_match
+			(user, "*", NULL, cause, rules);
+	}
+}
+
+/*
+ * User
+ */
+
+static void imap_sieve_user_deinit(struct mail_user *user)
+{
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+
+	if (isuser->isieve != NULL)
+		imap_sieve_deinit(&isuser->isieve);
+
+	hash_table_destroy(&isuser->mbox_rules);
+	if (array_is_created(&isuser->mbox_patterns))
+		array_free(&isuser->mbox_patterns);
+
+	isuser->module_ctx.super.deinit(user);
+}
+
+static void imap_sieve_user_created(struct mail_user *user)
+{
+	struct imap_sieve_user *isuser;
+	struct mail_user_vfuncs *v = user->vlast;
+
+	isuser = p_new(user->pool, struct imap_sieve_user, 1);
+	isuser->module_ctx.super = *v;
+	user->vlast = &isuser->module_ctx.super;
+	v->deinit = imap_sieve_user_deinit;
+	MODULE_CONTEXT_SET(user, imap_sieve_user_module, isuser);
+}
+
+/*
+ * Hooks
+ */
+
+static struct mail_storage_hooks imap_sieve_mail_storage_hooks = {
+	.mail_user_created = imap_sieve_user_created,
+	.mailbox_allocated = imap_sieve_mailbox_allocated,
+	.mail_allocated = imap_sieve_mail_allocated
+};
+
+/*
+ * Commands
+ */
+
+static void imap_sieve_command_pre(struct client_command_context *cmd)
+{
+	struct client *client = cmd->client;
+	struct mail_user *user = client->user;
+	struct imap_sieve_user *isuser = 	IMAP_SIEVE_USER_CONTEXT(user);
+
+	if (isuser == NULL)
+		return;
+
+	if (strcasecmp(cmd->name, "APPEND") == 0) {
+		isuser->cur_cmd = IMAP_SIEVE_CMD_APPEND;
+	} else 	if (strcasecmp(cmd->name, "COPY") == 0 ||
+		strcasecmp(cmd->name, "UID COPY") == 0) {
+		isuser->cur_cmd = IMAP_SIEVE_CMD_COPY;
+	} else 	if (strcasecmp(cmd->name, "MOVE") == 0 ||
+		strcasecmp(cmd->name, "UID MOVE") == 0) {
+		isuser->cur_cmd = IMAP_SIEVE_CMD_MOVE;
+	} else 	if (strcasecmp(cmd->name, "STORE") == 0 ||
+		strcasecmp(cmd->name, "UID STORE") == 0) {
+		isuser->cur_cmd = IMAP_SIEVE_CMD_STORE;
+	} else {
+		isuser->cur_cmd = IMAP_SIEVE_CMD_OTHER;
+	}
+}
+
+static void imap_sieve_command_post(struct client_command_context *cmd)
+{
+	struct client *client = cmd->client;
+	struct mail_user *user = client->user;
+	struct imap_sieve_user *isuser = 	IMAP_SIEVE_USER_CONTEXT(user);
+
+	if (isuser == NULL)
+		return;
+	isuser->cur_cmd = IMAP_SIEVE_CMD_NONE;
+}
+
+/*
+ * Client
+ */
+
+void imap_sieve_storage_client_created(struct client *client,
+	bool user_script)
+{
+	struct mail_user *user = client->user;
+	struct imap_sieve_user *isuser = IMAP_SIEVE_USER_CONTEXT_REQUIRE(user);
+	const char *set;
+
+	isuser->client = client;
+	isuser->user_script = user_script;
+
+	set = mail_user_plugin_getenv(user, "imapsieve_expunge_discarded");
+	isuser->expunge_discarded =
+		(set != NULL && strcasecmp(set, "yes") == 0);
+}
+
+/*
+ *
+ */
+
+void imap_sieve_storage_init(struct module *module)
+{
+	command_hook_register(imap_sieve_command_pre, imap_sieve_command_post);
+	mail_storage_hooks_add(module, &imap_sieve_mail_storage_hooks);
+}
+
+void imap_sieve_storage_deinit(void)
+{
+	mail_storage_hooks_remove(&imap_sieve_mail_storage_hooks);
+	command_hook_unregister(imap_sieve_command_pre, imap_sieve_command_post);
+}
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.h b/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.h
new file mode 100644
index 0000000..f96860f
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve-storage.h
@@ -0,0 +1,10 @@
+#ifndef IMAP_SIEVE_STORAGE_H
+#define IMAP_SIEVE_STORAGE_H
+
+void imap_sieve_storage_init(struct module *module);
+void imap_sieve_storage_deinit(void);
+
+void imap_sieve_storage_client_created(struct client *client,
+	bool user_script);
+
+#endif
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve.c b/pigeonhole/src/plugins/imapsieve/imap-sieve.c
new file mode 100644
index 0000000..e6cc24a
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve.c
@@ -0,0 +1,940 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+#include "lib.h"
+#include "str.h"
+#include "home-expand.h"
+#include "smtp-address.h"
+#include "smtp-submit.h"
+#include "mail-storage.h"
+#include "mail-user.h"
+#include "mail-duplicate.h"
+#include "iostream-ssl.h"
+#include "imap-client.h"
+#include "imap-settings.h"
+
+#include "sieve.h"
+#include "sieve-script.h"
+#include "sieve-storage.h"
+
+#include "ext-imapsieve-common.h"
+
+#include "imap-sieve.h"
+
+/*
+ * Configuration
+ */
+
+#define DUPLICATE_DB_NAME "lda-dupes"
+#define IMAP_SIEVE_MAX_USER_ERRORS 30
+
+/*
+ * IMAP Sieve
+ */
+
+struct imap_sieve {
+	pool_t pool;
+	struct client *client;
+	const char *home_dir;
+
+	struct sieve_instance *svinst;
+	struct sieve_storage *storage;
+
+	const struct sieve_extension *ext_imapsieve;
+	const struct sieve_extension *ext_vnd_imapsieve;
+
+	struct mail_duplicate_db *dup_db;
+
+	struct sieve_error_handler *master_ehandler;
+};
+
+static const char *
+mail_sieve_get_setting(void *context, const char *identifier)
+{
+	struct imap_sieve *isieve = context;
+	struct mail_user *user = isieve->client->user;
+
+	return mail_user_plugin_getenv(user, identifier);
+}
+
+static const struct sieve_callbacks mail_sieve_callbacks = {
+	NULL,
+	mail_sieve_get_setting
+};
+
+struct imap_sieve *imap_sieve_init(struct client *client)
+{
+	struct sieve_environment svenv;
+	struct imap_sieve *isieve;
+	struct mail_user *user = client->user;
+	const struct mail_storage_settings *mail_set =
+		mail_user_set_get_storage_set(user);
+	bool debug = user->mail_debug;
+	pool_t pool;
+
+	pool = pool_alloconly_create("imap_sieve", 256);
+	isieve = p_new(pool, struct imap_sieve, 1);
+	isieve->pool = pool;
+	isieve->client = client;
+
+	isieve->dup_db = mail_duplicate_db_init(user, DUPLICATE_DB_NAME);
+
+	i_zero(&svenv);
+	svenv.username = user->username;
+	(void)mail_user_get_home(user, &svenv.home_dir);
+	svenv.hostname = mail_set->hostname;
+	svenv.base_dir = user->set->base_dir;
+	svenv.event_parent = client->event;
+	svenv.flags = SIEVE_FLAG_HOME_RELATIVE;
+	svenv.location = SIEVE_ENV_LOCATION_MS;
+	svenv.delivery_phase = SIEVE_DELIVERY_PHASE_POST;
+
+	isieve->home_dir = p_strdup(pool, svenv.home_dir);
+
+	isieve->svinst = sieve_init(&svenv, &mail_sieve_callbacks, isieve,
+				    debug);
+
+	isieve->ext_imapsieve = sieve_extension_replace(
+		isieve->svinst, &imapsieve_extension, TRUE);
+	isieve->ext_vnd_imapsieve = sieve_extension_replace(
+		isieve->svinst, &vnd_imapsieve_extension, TRUE);
+
+	isieve->master_ehandler =
+		sieve_master_ehandler_create(isieve->svinst, 0);
+	sieve_error_handler_accept_infolog(isieve->master_ehandler, TRUE);
+	sieve_error_handler_accept_debuglog(isieve->master_ehandler, debug);
+
+	return isieve;
+}
+
+void imap_sieve_deinit(struct imap_sieve **_isieve)
+{
+	struct imap_sieve *isieve = *_isieve;
+
+	*_isieve = NULL;
+
+	sieve_error_handler_unref(&isieve->master_ehandler);
+
+	if (isieve->storage != NULL)
+		sieve_storage_unref(&isieve->storage);
+	sieve_extension_unregister(isieve->ext_imapsieve);
+	sieve_extension_unregister(isieve->ext_vnd_imapsieve);
+	sieve_deinit(&isieve->svinst);
+
+	mail_duplicate_db_deinit(&isieve->dup_db);
+
+	pool_unref(&isieve->pool);
+}
+
+static int
+imap_sieve_get_storage(struct imap_sieve *isieve,
+		       struct sieve_storage **storage_r)
+{
+	enum sieve_storage_flags storage_flags = 0;
+	struct mail_user *user = isieve->client->user;
+	enum sieve_error error;
+
+	if (isieve->storage != NULL) {
+		*storage_r = isieve->storage;
+		return 1;
+	}
+
+	// FIXME: limit interval between retries
+
+	isieve->storage = sieve_storage_create_main(isieve->svinst, user,
+						    storage_flags, &error);
+	if (isieve->storage == NULL) {
+		if (error == SIEVE_ERROR_TEMP_FAILURE)
+			return -1;
+		return 0;
+	}
+	*storage_r = isieve->storage;
+	return 1;
+}
+
+/*
+ * Mail transmission
+ */
+
+static void *
+imap_sieve_smtp_start(const struct sieve_script_env *senv,
+		      const struct smtp_address *mail_from)
+{
+	struct imap_sieve_context *isctx = senv->script_context;
+	struct imap_sieve *isieve = isctx->isieve;
+	struct mail_user *user = isieve->client->user;
+	const struct smtp_submit_settings *smtp_set = isieve->client->smtp_set;
+	struct ssl_iostream_settings ssl_set;
+	struct smtp_submit_input submit_input;
+	
+	i_zero(&ssl_set);
+	mail_user_init_ssl_client_settings(user, &ssl_set);
+
+	i_zero(&submit_input);
+	submit_input.ssl = &ssl_set;
+
+	return smtp_submit_init_simple(&submit_input, smtp_set, mail_from);
+}
+
+static void
+imap_sieve_smtp_add_rcpt(const struct sieve_script_env *senv ATTR_UNUSED,
+			 void *handle, const struct smtp_address *rcpt_to)
+{
+	struct smtp_submit *smtp_submit = handle;
+
+	smtp_submit_add_rcpt(smtp_submit, rcpt_to);
+}
+
+static struct ostream *
+imap_sieve_smtp_send(const struct sieve_script_env *senv ATTR_UNUSED,
+		     void *handle)
+{
+	struct smtp_submit *smtp_submit = handle;
+
+	return smtp_submit_send(smtp_submit);
+}
+
+static void
+imap_sieve_smtp_abort(const struct sieve_script_env *senv ATTR_UNUSED,
+		      void *handle)
+{
+	struct smtp_submit *smtp_submit = handle;
+
+	smtp_submit_deinit(&smtp_submit);
+}
+
+static int
+imap_sieve_smtp_finish(const struct sieve_script_env *senv ATTR_UNUSED,
+		       void *handle, const char **error_r)
+{
+	struct smtp_submit *smtp_submit = handle;
+	int ret;
+
+	ret = smtp_submit_run(smtp_submit, error_r);
+	smtp_submit_deinit(&smtp_submit);
+	return ret;
+}
+
+/*
+ * Duplicate checking
+ */
+
+static void *
+imap_sieve_duplicate_transaction_begin(const struct sieve_script_env *senv)
+{
+	struct imap_sieve_context *isctx = senv->script_context;
+
+	return mail_duplicate_transaction_begin(isctx->isieve->dup_db);
+}
+
+static void imap_sieve_duplicate_transaction_commit(void **_dup_trans)
+{
+	struct mail_duplicate_transaction *dup_trans = *_dup_trans;
+
+	*_dup_trans = NULL;
+	mail_duplicate_transaction_commit(&dup_trans);
+}
+
+static void imap_sieve_duplicate_transaction_rollback(void **_dup_trans)
+{
+	struct mail_duplicate_transaction *dup_trans = *_dup_trans;
+
+	*_dup_trans = NULL;
+	mail_duplicate_transaction_rollback(&dup_trans);
+}
+
+static enum sieve_duplicate_check_result
+imap_sieve_duplicate_check(void *_dup_trans,
+			   const struct sieve_script_env *senv,
+			   const void *id, size_t id_size)
+{
+	struct mail_duplicate_transaction *dup_trans = _dup_trans;
+
+	switch (mail_duplicate_check(dup_trans, id, id_size,
+				     senv->user->username)) {
+	case MAIL_DUPLICATE_CHECK_RESULT_EXISTS:
+		return SIEVE_DUPLICATE_CHECK_RESULT_EXISTS;
+	case MAIL_DUPLICATE_CHECK_RESULT_NOT_FOUND:
+		return SIEVE_DUPLICATE_CHECK_RESULT_NOT_FOUND;
+	case MAIL_DUPLICATE_CHECK_RESULT_DEADLOCK:
+	case MAIL_DUPLICATE_CHECK_RESULT_LOCK_TIMEOUT:
+		return SIEVE_DUPLICATE_CHECK_RESULT_TEMP_FAILURE;
+	case MAIL_DUPLICATE_CHECK_RESULT_IO_ERROR:
+	case MAIL_DUPLICATE_CHECK_RESULT_TOO_MANY_LOCKS:
+		break;
+	}
+	return SIEVE_DUPLICATE_CHECK_RESULT_FAILURE;
+}
+
+static void
+imap_sieve_duplicate_mark(void *_dup_trans, const struct sieve_script_env *senv,
+			  const void *id, size_t id_size, time_t time)
+{
+	struct mail_duplicate_transaction *dup_trans = _dup_trans;
+
+	mail_duplicate_mark(dup_trans, id, id_size, senv->user->username, time);
+}
+
+/*
+ * Result logging
+ */
+
+static const char *
+imap_sieve_result_amend_log_message(const struct sieve_script_env *senv,
+				    enum log_type log_type ATTR_UNUSED,
+				    const char *message)
+{
+	struct imap_sieve_context *isctx = senv->script_context;
+	string_t *str;
+
+	if (isctx->mail == NULL)
+		return message;
+
+	str = t_str_new(256);
+	str_printfa(str, "uid=%u: ", isctx->mail->uid);
+	str_append(str, message);
+	return str_c(str);
+}
+
+/*
+ * IMAP Sieve run
+ */
+
+struct imap_sieve_run_script {
+	struct sieve_script *script;
+	struct sieve_binary *binary;
+
+	/* Compile failed once with this error;
+	   don't try again for this transaction */
+	enum sieve_error compile_error;
+
+	/* Binary corrupt after recompile; don't recompile again */
+	bool binary_corrupt:1;
+	/* Resource usage exceeded */
+	bool rusage_exceeded:1;
+};
+
+struct imap_sieve_run {
+	pool_t pool;
+	struct imap_sieve *isieve;
+	struct mailbox *dest_mailbox, *src_mailbox;
+	char *cause;
+
+	struct sieve_error_handler *user_ehandler;
+	char *userlog;
+
+	struct sieve_trace_config trace_config;
+	struct sieve_trace_log *trace_log;
+
+	struct sieve_script *user_script;
+	struct imap_sieve_run_script *scripts;
+	unsigned int scripts_count;
+
+	bool trace_log_initialized:1;
+};
+
+static void
+imap_sieve_run_init_user_log(struct imap_sieve_run *isrun)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	const char *log_path;
+
+	log_path = sieve_user_get_log_path(svinst, isrun->user_script);
+	if (log_path != NULL) {
+		isrun->userlog = p_strdup(isrun->pool, log_path);
+		isrun->user_ehandler = sieve_logfile_ehandler_create(
+			svinst, log_path, IMAP_SIEVE_MAX_USER_ERRORS);
+	}
+}
+
+static void
+imap_sieve_run_init_trace_log(struct imap_sieve_run *isrun,
+			      struct sieve_trace_config *trace_config_r,
+			      struct sieve_trace_log **trace_log_r)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	struct mail_user *user = isieve->client->user;
+
+	if (isrun->trace_log_initialized) {
+		*trace_config_r = isrun->trace_config;
+		*trace_log_r = isrun->trace_log;
+		return;
+	}
+	isrun->trace_log_initialized = TRUE;
+
+	if (sieve_trace_config_get(svinst, &isrun->trace_config) < 0 ||
+	    sieve_trace_log_open(svinst, &isrun->trace_log) < 0) {
+		i_zero(&isrun->trace_config);
+		isrun->trace_log = NULL;
+
+		i_zero(trace_config_r);
+		*trace_log_r = NULL;
+		return;
+	}
+
+	/* Write header for trace file */
+	sieve_trace_log_printf(isrun->trace_log,
+		"Sieve trace log for IMAPSIEVE:\n"
+		"\n"
+		"  Username: %s\n", user->username);
+	if (user->session_id != NULL) {
+		sieve_trace_log_printf(isrun->trace_log,
+			"  Session ID: %s\n", user->session_id);
+	}
+	if (isrun->src_mailbox != NULL) {
+		sieve_trace_log_printf(isrun->trace_log,
+				       "  Source mailbox: %s\n",
+				       mailbox_get_vname(isrun->src_mailbox));
+	}
+
+	sieve_trace_log_printf(isrun->trace_log,
+		"  Destination mailbox: %s\n"
+		"  Cause: %s\n\n",
+		mailbox_get_vname(isrun->dest_mailbox),
+		isrun->cause);
+
+	*trace_config_r = isrun->trace_config;
+	*trace_log_r = isrun->trace_log;
+}
+
+int imap_sieve_run_init(struct imap_sieve *isieve,
+			struct mailbox *dest_mailbox,
+			struct mailbox *src_mailbox,
+			const char *cause, const char *script_name,
+			const char *const *scripts_before,
+			const char *const *scripts_after,
+			struct imap_sieve_run **isrun_r)
+{
+	struct sieve_instance *svinst = isieve->svinst;
+	struct imap_sieve_run *isrun;
+	struct sieve_storage *storage;
+	struct imap_sieve_run_script *scripts;
+	struct sieve_script *user_script;
+	const char *const *sp;
+	enum sieve_error error;
+	pool_t pool;
+	unsigned int max_len, count;
+	int ret;
+
+	/* Determine how many scripts we may run for this event */
+	max_len = 0;
+	if (scripts_before != NULL)
+		max_len += str_array_length(scripts_before);
+	if (script_name != NULL)
+		max_len++;
+	if (scripts_after != NULL)
+		max_len += str_array_length(scripts_after);
+	if (max_len == 0)
+		return 0;
+
+	/* Get storage for user script */
+	storage = NULL;
+	if (script_name != NULL && *script_name != '\0' &&
+	    (ret = imap_sieve_get_storage(isieve, &storage)) < 0)
+		return ret;
+
+	/* Open all scripts */
+	count = 0;
+	pool = pool_alloconly_create("imap_sieve_run", 256);
+	scripts = p_new(pool, struct imap_sieve_run_script, max_len);
+
+	/* Admin scripts before user script */
+	if (scripts_before != NULL) {
+		for (sp = scripts_before; *sp != NULL; sp++) {
+			i_assert(count < max_len);
+			scripts[count].script =
+				sieve_script_create_open(svinst, *sp, NULL,
+							 &error);
+			if (scripts[count].script != NULL)
+				count++;
+			else if (error == SIEVE_ERROR_TEMP_FAILURE)
+				return -1;
+		}
+	}
+
+	/* The user script */
+	user_script = NULL;
+	if (storage != NULL) {
+		i_assert(count < max_len);
+		scripts[count].script =
+			sieve_storage_open_script(storage, script_name, &error);
+		if (scripts[count].script != NULL) {
+			user_script = scripts[count].script;
+			count++;
+		} else if (error == SIEVE_ERROR_TEMP_FAILURE) {
+			return -1;
+		}
+	}
+
+	/* Admin scripts after user script */
+	if (scripts_after != NULL) {
+		for (sp = scripts_after; *sp != NULL; sp++) {
+			i_assert(count < max_len);
+			scripts[count].script =
+				sieve_script_create_open(svinst, *sp, NULL,
+							 &error);
+			if (scripts[count].script != NULL)
+				count++;
+			else if (error == SIEVE_ERROR_TEMP_FAILURE)
+				return -1;
+		}
+	}
+
+	if (count == 0) {
+		/* None of the scripts could be opened */
+		pool_unref(&pool);
+		return 0;
+	}
+
+	/* Initialize */
+	isrun = p_new(pool, struct imap_sieve_run, 1);
+	isrun->pool = pool;
+	isrun->isieve = isieve;
+	isrun->dest_mailbox = dest_mailbox;
+	isrun->src_mailbox = src_mailbox;
+	isrun->cause = p_strdup(pool, cause);
+	isrun->user_script = user_script;
+	isrun->scripts = scripts;
+	isrun->scripts_count = count;
+
+	imap_sieve_run_init_user_log(isrun);
+
+	*isrun_r = isrun;
+	return 1;
+}
+
+void imap_sieve_run_deinit(struct imap_sieve_run **_isrun)
+{
+	struct imap_sieve_run *isrun = *_isrun;
+	unsigned int i;
+
+	*_isrun = NULL;
+
+	for (i = 0; i < isrun->scripts_count; i++) {
+		if (isrun->scripts[i].binary != NULL)
+			sieve_close(&isrun->scripts[i].binary);
+		if (isrun->scripts[i].script != NULL)
+			sieve_script_unref(&isrun->scripts[i].script);
+	}
+	if (isrun->user_ehandler != NULL)
+		sieve_error_handler_unref(&isrun->user_ehandler);
+	if (isrun->trace_log != NULL)
+		sieve_trace_log_free(&isrun->trace_log);
+
+	pool_unref(&isrun->pool);
+}
+
+static struct sieve_binary *
+imap_sieve_run_open_script(struct imap_sieve_run *isrun,
+			   struct sieve_script *script,
+			   enum sieve_compile_flags cpflags,
+			   bool recompile, enum sieve_error *error_r)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	struct sieve_error_handler *ehandler;
+	struct sieve_binary *sbin;
+	const char *compile_name = "compile";
+
+	if (recompile) {
+		/* Warn */
+		e_warning(sieve_get_event(svinst),
+			  "Encountered corrupt binary: re-compiling script %s",
+			  sieve_script_location(script));
+		compile_name = "re-compile";
+	} else {
+		e_debug(sieve_get_event(svinst),
+			"Loading script %s", sieve_script_location(script));
+	}
+
+	if (script == isrun->user_script)
+		ehandler = isrun->user_ehandler;
+	else
+		ehandler = isieve->master_ehandler;
+	sieve_error_handler_reset(ehandler);
+
+	/* Load or compile the sieve script */
+	if (recompile) {
+		sbin = sieve_compile_script(script, ehandler, cpflags, error_r);
+	} else {
+		sbin = sieve_open_script(script, ehandler, cpflags, error_r);
+	}
+
+	/* Handle error */
+	if (sbin == NULL) {
+		switch (*error_r) {
+		/* Script not found */
+		case SIEVE_ERROR_NOT_FOUND:
+			e_debug(sieve_get_event(svinst),
+				"Script `%s' is missing for %s",
+				sieve_script_location(script), compile_name);
+			break;
+		/* Temporary failure */
+		case SIEVE_ERROR_TEMP_FAILURE:
+			e_error(sieve_get_event(svinst),
+				"Failed to open script `%s' for %s "
+				"(temporary failure)",
+				sieve_script_location(script), compile_name);
+			break;
+		/* Compile failed */
+		case SIEVE_ERROR_NOT_VALID:
+			if (script == isrun->user_script &&
+			   isrun->userlog != NULL ) {
+				e_info(sieve_get_event(svinst),
+				       "Failed to %s script `%s' "
+				       "(view user logfile `%s' for more information)",
+				       compile_name, sieve_script_location(script),
+				       isrun->userlog);
+				break;
+			}
+			e_error(sieve_get_event(svinst),
+				"Failed to %s script `%s'",
+				compile_name, sieve_script_location(script));
+			break;
+		/* Cumulative resource limit exceeded */
+		case SIEVE_ERROR_RESOURCE_LIMIT:
+			e_error(sieve_get_event(svinst),
+				"Failed to open script `%s' for %s "
+				"(cumulative resource limit exceeded)",
+				sieve_script_location(script), compile_name);
+			break;
+		/* Something else */
+		default:
+			e_error(sieve_get_event(svinst),
+				"Failed to open script `%s' for %s",
+				sieve_script_location(script), compile_name);
+			break;
+		}
+
+		return NULL;
+	}
+
+	if (!recompile)
+		(void)sieve_save(sbin, FALSE, NULL);
+	return sbin;
+}
+
+static int
+imap_sieve_handle_exec_status(struct imap_sieve_run *isrun,
+			      struct sieve_script *script, int status,
+			      struct sieve_exec_status *estatus, bool *fatal_r)
+			      ATTR_NULL(2)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	const char *userlog_notice = "";
+	enum log_type log_level, user_log_level;
+	enum mail_error mail_error = MAIL_ERROR_NONE;
+	int ret = -1;
+
+	*fatal_r = FALSE;
+
+	log_level = user_log_level = LOG_TYPE_ERROR;
+
+	if (estatus->last_storage != NULL && estatus->store_failed) {
+		mail_storage_get_last_error(estatus->last_storage, &mail_error);
+
+		/* Don't bother administrator too much with benign errors */
+		if (mail_error == MAIL_ERROR_NOQUOTA) {
+			log_level = LOG_TYPE_INFO;
+			user_log_level = LOG_TYPE_INFO;
+		}
+	}
+
+	if (script == isrun->user_script && isrun->userlog != NULL) {
+		userlog_notice = t_strdup_printf(
+			" (user logfile %s may reveal additional details)",
+			isrun->userlog);
+		user_log_level = LOG_TYPE_INFO;
+	}
+
+	switch (status) {
+	case SIEVE_EXEC_FAILURE:
+		e_log(sieve_get_event(svinst), user_log_level,
+			"Execution of script %s failed%s",
+			sieve_script_location(script), userlog_notice);
+		ret = 0;
+		break;
+	case SIEVE_EXEC_TEMP_FAILURE:
+		e_log(sieve_get_event(svinst), log_level,
+		      "Execution of script %s was aborted "
+		      "due to temporary failure%s",
+		      sieve_script_location(script), userlog_notice);
+		*fatal_r = TRUE;
+		ret = -1;
+		break;
+	case SIEVE_EXEC_BIN_CORRUPT:
+		e_error(sieve_get_event(svinst),
+			"!!BUG!!: Binary compiled from %s is still corrupt; "
+			"bailing out and reverting to default action",
+			sieve_script_location(script));
+		*fatal_r = TRUE;
+		ret = -1;
+		break;
+	case SIEVE_EXEC_RESOURCE_LIMIT:
+		e_error(sieve_get_event(svinst),
+			"Execution of script %s was aborted "
+			"due to excessive resource usage",
+			sieve_script_location(script));
+		*fatal_r = TRUE;
+		ret = -1;
+		break;
+	case SIEVE_EXEC_KEEP_FAILED:
+		e_log(sieve_get_event(svinst), log_level,
+		      "Execution of script %s failed "
+		      "with unsuccessful implicit keep%s",
+		      sieve_script_location(script), userlog_notice);
+		ret = 0;
+		break;
+	case SIEVE_EXEC_OK:
+		ret = (estatus->keep_original ? 0 : 1);
+		break;
+	}
+
+	return ret;
+}
+
+static int
+imap_sieve_run_scripts(struct imap_sieve_run *isrun,
+		       const struct sieve_message_data *msgdata,
+		       const struct sieve_script_env *scriptenv, bool *fatal_r)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	struct imap_sieve_run_script *scripts = isrun->scripts;
+	unsigned int count = isrun->scripts_count;
+	struct sieve_resource_usage *rusage =
+		&scriptenv->exec_status->resource_usage;
+	struct sieve_multiscript *mscript;
+	struct sieve_error_handler *ehandler;
+	struct sieve_script *last_script = NULL;
+	bool user_script = FALSE, more = TRUE, rusage_exceeded = FALSE;
+	enum sieve_compile_flags cpflags;
+	enum sieve_execute_flags exflags;
+	enum sieve_error compile_error = SIEVE_ERROR_NONE;
+	unsigned int i;
+	int ret;
+
+	*fatal_r = FALSE;
+
+	/* Start execution */
+	mscript = sieve_multiscript_start_execute(svinst, msgdata, scriptenv);
+
+	/* Execute scripts */
+	for (i = 0; i < count && more; i++) {
+		struct sieve_script *script = scripts[i].script;
+		struct sieve_binary *sbin = scripts[i].binary;
+		int mstatus;
+
+		cpflags = 0;
+		exflags = SIEVE_EXECUTE_FLAG_NO_ENVELOPE |
+			  SIEVE_EXECUTE_FLAG_SKIP_RESPONSES;
+
+		user_script = (script == isrun->user_script);
+		last_script = script;
+
+		if (scripts[i].rusage_exceeded) {
+			rusage_exceeded = TRUE;
+			break;
+		}
+
+		sieve_resource_usage_init(rusage);
+		if (user_script) {
+			cpflags |= SIEVE_COMPILE_FLAG_NOGLOBAL;
+			exflags |= SIEVE_EXECUTE_FLAG_NOGLOBAL;
+			ehandler = isrun->user_ehandler;
+		} else {
+			cpflags |= SIEVE_COMPILE_FLAG_NO_ENVELOPE;
+			ehandler = isieve->master_ehandler;
+		}
+
+		/* Open */
+		if (sbin == NULL) {
+			e_debug(sieve_get_event(svinst),
+				"Opening script %d of %d from `%s'",
+				i+1, count, sieve_script_location(script));
+
+			/* Already known to fail */
+			if (scripts[i].compile_error != SIEVE_ERROR_NONE) {
+				compile_error = scripts[i].compile_error;
+				break;
+			}
+
+			/* Try to open/compile binary */
+			scripts[i].binary = sbin = imap_sieve_run_open_script(
+				isrun, script, cpflags, FALSE, &compile_error);
+			if (sbin == NULL) {
+				scripts[i].compile_error = compile_error;
+				break;
+			}
+		}
+
+		/* Execute */
+		e_debug(sieve_get_event(svinst),
+			"Executing script from `%s'",
+			sieve_get_source(sbin));
+		more = sieve_multiscript_run(mscript, sbin, ehandler, ehandler,
+					     exflags);
+
+		mstatus = sieve_multiscript_status(mscript);
+		if (!more && mstatus == SIEVE_EXEC_BIN_CORRUPT &&
+		    !scripts[i].binary_corrupt && sieve_is_loaded(sbin)) {
+			/* Close corrupt script */
+			sieve_close(&sbin);
+
+			/* Recompile */
+			scripts[i].binary = sbin =
+				imap_sieve_run_open_script(
+					isrun, script, cpflags, FALSE,
+					&compile_error);
+			if (sbin == NULL) {
+				scripts[i].compile_error = compile_error;
+				break;
+			}
+
+			/* Execute again */
+			more = sieve_multiscript_run(mscript, sbin,
+						     ehandler, ehandler,
+						     exflags);
+
+			/* Save new version */
+
+			mstatus = sieve_multiscript_status(mscript);
+			if (mstatus == SIEVE_EXEC_BIN_CORRUPT)
+				scripts[i].binary_corrupt = TRUE;
+			else if (more)
+				(void)sieve_save(sbin, FALSE, NULL);
+		}
+
+		if (user_script && !sieve_record_resource_usage(sbin, rusage)) {
+			rusage_exceeded = ((i + 1) < count && more);
+			scripts[i].rusage_exceeded = TRUE;
+			break;
+		}
+	}
+
+	/* Finish execution */
+	exflags = SIEVE_EXECUTE_FLAG_NO_ENVELOPE |
+		  SIEVE_EXECUTE_FLAG_SKIP_RESPONSES;
+	ehandler = (isrun->user_ehandler != NULL ?
+		    isrun->user_ehandler : isieve->master_ehandler);
+	if (compile_error == SIEVE_ERROR_TEMP_FAILURE) {
+		ret = sieve_multiscript_finish(&mscript, ehandler, exflags,
+					       SIEVE_EXEC_TEMP_FAILURE);
+	} else if (rusage_exceeded) {
+		i_assert(last_script != NULL);
+		(void)sieve_multiscript_finish(&mscript, ehandler, exflags,
+					       SIEVE_EXEC_TEMP_FAILURE);
+		sieve_error(ehandler, sieve_script_name(last_script),
+			    "cumulative resource usage limit exceeded");
+		ret = SIEVE_EXEC_RESOURCE_LIMIT;
+	} else {
+		ret = sieve_multiscript_finish(&mscript, ehandler, exflags,
+					       SIEVE_EXEC_OK);
+	}
+
+	/* Don't log additional messages about compile failure */
+	if (compile_error != SIEVE_ERROR_NONE && ret == SIEVE_EXEC_FAILURE) {
+		e_info(sieve_get_event(svinst),
+		       "Aborted script execution sequence "
+		       "with successful implicit keep");
+		return 1;
+	}
+
+	if (last_script == NULL && ret == SIEVE_EXEC_OK)
+		return 0;
+	return imap_sieve_handle_exec_status(isrun, last_script, ret,
+					     scriptenv->exec_status, fatal_r);
+}
+
+int imap_sieve_run_mail(struct imap_sieve_run *isrun, struct mail *mail,
+			const char *changed_flags, bool *fatal_r)
+{
+	struct imap_sieve *isieve = isrun->isieve;
+	struct sieve_instance *svinst = isieve->svinst;
+	struct mail_user *user = isieve->client->user;
+	struct sieve_message_data msgdata;
+	struct sieve_script_env scriptenv;
+	struct sieve_exec_status estatus;
+	struct imap_sieve_context context;
+	struct sieve_trace_config trace_config;
+	struct sieve_trace_log *trace_log;
+	const char *error;
+	int ret;
+
+	*fatal_r = FALSE;
+
+	i_zero(&context);
+	context.event.dest_mailbox = isrun->dest_mailbox;
+	context.event.src_mailbox = isrun->src_mailbox;
+	context.event.cause = isrun->cause;
+	context.event.changed_flags = changed_flags;
+	context.mail = mail;
+	context.isieve = isieve;
+
+	/* Initialize trace logging */
+	imap_sieve_run_init_trace_log(isrun, &trace_config, &trace_log);
+
+	T_BEGIN {
+		if (trace_log != NULL) {
+			/* Write trace header for message */
+			sieve_trace_log_printf(trace_log,
+				"Filtering message:\n"
+				"\n"
+				"  UID: %u\n", mail->uid);
+			if (changed_flags != NULL && *changed_flags != '\0') {
+				sieve_trace_log_printf(trace_log,
+					"  Changed flags: %s\n", changed_flags);
+			}
+		}
+
+		/* Collect necessary message data */
+
+		i_zero(&msgdata);
+		msgdata.mail = mail;
+		msgdata.auth_user = user->username;
+		(void)mail_get_message_id(msgdata.mail, &msgdata.id);
+
+		/* Compose script execution environment */
+
+		if (sieve_script_env_init(&scriptenv, user, &error) < 0) {
+			e_error(sieve_get_event(svinst),
+				"Failed to initialize script execution: %s",
+				error);
+			ret = -1;
+		} else {
+			scriptenv.default_mailbox =
+				mailbox_get_vname(mail->box);
+			scriptenv.smtp_start = imap_sieve_smtp_start;
+			scriptenv.smtp_add_rcpt = imap_sieve_smtp_add_rcpt;
+			scriptenv.smtp_send = imap_sieve_smtp_send;
+			scriptenv.smtp_abort = imap_sieve_smtp_abort;
+			scriptenv.smtp_finish = imap_sieve_smtp_finish;
+			scriptenv.duplicate_transaction_begin =
+				imap_sieve_duplicate_transaction_begin;
+			scriptenv.duplicate_transaction_commit =
+				imap_sieve_duplicate_transaction_commit;
+			scriptenv.duplicate_transaction_rollback =
+				imap_sieve_duplicate_transaction_rollback;
+			scriptenv.duplicate_mark = imap_sieve_duplicate_mark;
+			scriptenv.duplicate_check = imap_sieve_duplicate_check;
+			scriptenv.result_amend_log_message =
+				imap_sieve_result_amend_log_message;
+			scriptenv.trace_log = trace_log;
+			scriptenv.trace_config = trace_config;
+			scriptenv.script_context = &context;
+
+			i_zero(&estatus);
+			scriptenv.exec_status = &estatus;
+
+			/* Execute script(s) */
+
+			ret = imap_sieve_run_scripts(isrun, &msgdata,
+						     &scriptenv, fatal_r);
+		}
+	} T_END;
+
+	return ret;
+}
diff --git a/pigeonhole/src/plugins/imapsieve/imap-sieve.h b/pigeonhole/src/plugins/imapsieve/imap-sieve.h
new file mode 100644
index 0000000..12d0ac7
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/imap-sieve.h
@@ -0,0 +1,59 @@
+#ifndef IMAP_SIEVE_H
+#define IMAP_SIEVE_H
+
+struct client;
+
+/*
+ * IMAP event
+ */
+
+struct imap_sieve_event {
+	struct mailbox *dest_mailbox, *src_mailbox;
+	const char *cause;
+	const char *changed_flags;
+};
+
+struct imap_sieve_context {
+	struct imap_sieve_event event;
+	struct mail *mail;
+
+	struct imap_sieve *isieve;
+};
+
+static inline bool
+imap_sieve_event_cause_valid(const char *cause)
+{
+	return (strcasecmp(cause, "APPEND") == 0 ||
+		strcasecmp(cause, "COPY") == 0 ||
+		strcasecmp(cause, "FLAG") == 0);
+}
+
+/*
+ * IMAP Sieve
+ */
+
+struct imap_sieve;
+
+struct imap_sieve *imap_sieve_init(struct client *client);
+void imap_sieve_deinit(struct imap_sieve **_isieve);
+
+/*
+ * IMAP Sieve run
+ */
+
+struct imap_sieve_run;
+
+int imap_sieve_run_init(struct imap_sieve *isieve, struct mailbox *dest_mailbox,
+			struct mailbox *src_mailbox, const char *cause,
+			const char *script_name,
+			const char *const *scripts_before,
+			const char *const *scripts_after,
+			struct imap_sieve_run **isrun_r)
+			ATTR_NULL(4, 5, 6);
+
+int imap_sieve_run_mail(struct imap_sieve_run *isrun, struct mail *mail,
+			const char *changed_flags, bool *fatal_r);
+
+void imap_sieve_run_deinit(struct imap_sieve_run **_isrun);
+
+#endif
diff --git a/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.c b/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.c
new file mode 100644
index 0000000..12611b3
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.c
@@ -0,0 +1,62 @@
+/* Copyright (c) 2016-2018 Pigeonhole authors, see the included COPYING file
+ */
+
+#include "sieve.h"
+#include "sieve-error.h"
+#include "sieve-extensions.h"
+
+#include "ext-imapsieve-common.h"
+
+#include "sieve-imapsieve-plugin.h"
+
+/*
+ * Sieve plugin interface
+ */
+
+struct _plugin_context {
+	const struct sieve_extension *ext_imapsieve;
+	const struct sieve_extension *ext_vnd_imapsieve;
+};
+
+const char *sieve_imapsieve_plugin_version = PIGEONHOLE_ABI_VERSION;
+
+void sieve_imapsieve_plugin_load
+(struct sieve_instance *svinst, void **context)
+{
+	struct _plugin_context *pctx = i_new(struct _plugin_context, 1);
+
+	pctx->ext_imapsieve = sieve_extension_register
+		(svinst, &imapsieve_extension_dummy, TRUE);
+	pctx->ext_vnd_imapsieve = sieve_extension_register
+		(svinst, &vnd_imapsieve_extension_dummy, TRUE);
+
+	e_debug(sieve_get_event(svinst),
+		"Sieve imapsieve plugin for %s version %s loaded",
+		PIGEONHOLE_NAME, PIGEONHOLE_VERSION_FULL);
+
+	*context = (void *)pctx;
+}
+
+void sieve_imapsieve_plugin_unload
+(struct sieve_instance *svinst ATTR_UNUSED, void *context)
+{
+	struct _plugin_context *pctx = (struct _plugin_context *)context;
+
+	sieve_extension_unregister(pctx->ext_imapsieve);
+	sieve_extension_unregister(pctx->ext_vnd_imapsieve);
+
+	i_free(pctx);}
+
+/*
+ * Module interface
+ */
+
+void sieve_imapsieve_plugin_init(void)
+{
+	/* Nothing */
+}
+
+void sieve_imapsieve_plugin_deinit(void)
+{
+	/* Nothing */
+}
diff --git a/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.h b/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.h
new file mode 100644
index 0000000..fcf9777
--- /dev/null
+++ b/pigeonhole/src/plugins/imapsieve/sieve-imapsieve-plugin.h
@@ -0,0 +1,20 @@
+#ifndef SIEVE_IMAPSIEVE_PLUGIN_H
+#define SIEVE_IMAPSIEVE_PLUGIN_H
+
+/*
+ * Plugin interface
+ */
+
+void sieve_imapsieve_plugin_load
+	(struct sieve_instance *svinst, void **context);
+void sieve_imapsieve_plugin_unload
+	(struct sieve_instance *svinst, void *context);
+
+/*
+ * Module interface
+ */
+
+void sieve_imapsieve_plugin_init(void);
+void sieve_imapsieve_plugin_deinit(void);
+
+#endif