update automake and move doc -> docsrc
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 781acbf..a714512 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,16 +1,9 @@
 
+SUBDIRS = docsrc
+
 docsdir = $(datadir)/doc/asn1c
 
-docs_DATA =	$(srcdir)/*.pdf	\
-		$(srcdir)/*.html
+docs_DATA = $(srcdir)/*.pdf
 
-EXTRA_DIST =	$(srcdir)/*.pdf	\
-		$(srcdir)/*.html
+EXTRA_DIST = $(srcdir)/*.pdf
 
-regen:
-	pdflatex --output-format=dvi asn1c-usage
-	pdflatex --output-format=dvi asn1c-usage
-	pdflatex --output-format=dvi asn1c-usage
-	dvipdf asn1c-usage
-
-CLEANFILES = *.*~ *.aux *.dvi *.log *.out *.toc
diff --git a/doc/Makefile.in b/doc/Makefile.in
index 513c6b3..07cb405 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -32,11 +32,13 @@
 POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
-target_triplet = @target@
 subdir = doc
 DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/configure.in
+am__aclocal_m4_deps = $(top_srcdir)/m4/libtool.m4 \
+	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
+	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
+	$(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
@@ -44,6 +46,13 @@
 CONFIG_CLEAN_FILES =
 SOURCES =
 DIST_SOURCES =
+RECURSIVE_TARGETS = all-recursive check-recursive dvi-recursive \
+	html-recursive info-recursive install-data-recursive \
+	install-dvi-recursive install-exec-recursive \
+	install-html-recursive install-info-recursive \
+	install-pdf-recursive install-ps-recursive install-recursive \
+	installcheck-recursive installdirs-recursive pdf-recursive \
+	ps-recursive uninstall-recursive
 am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
 am__vpath_adj = case $$p in \
     $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
@@ -53,6 +62,11 @@
 am__installdirs = "$(DESTDIR)$(docsdir)"
 docsDATA_INSTALL = $(INSTALL_DATA)
 DATA = $(docs_DATA)
+RECURSIVE_CLEAN_TARGETS = mostlyclean-recursive clean-recursive	\
+  distclean-recursive maintainer-clean-recursive
+ETAGS = etags
+CTAGS = ctags
+DIST_SUBDIRS = $(SUBDIRS)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 ADD_CFLAGS = @ADD_CFLAGS@
@@ -65,7 +79,6 @@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
-CONFIGURE_DEPENDS = @CONFIGURE_DEPENDS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CYGPATH_W = @CYGPATH_W@
@@ -96,7 +109,6 @@
 LIPO = @LIPO@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
-MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
 MKDIR_P = @MKDIR_P@
 NM = @NM@
@@ -167,25 +179,17 @@
 sharedstatedir = @sharedstatedir@
 srcdir = @srcdir@
 sysconfdir = @sysconfdir@
-target = @target@
 target_alias = @target_alias@
-target_cpu = @target_cpu@
-target_os = @target_os@
-target_vendor = @target_vendor@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
+SUBDIRS = docsrc
 docsdir = $(datadir)/doc/asn1c
-docs_DATA = $(srcdir)/*.pdf	\
-		$(srcdir)/*.html
-
-EXTRA_DIST = $(srcdir)/*.pdf	\
-		$(srcdir)/*.html
-
-CLEANFILES = *.*~ *.aux *.dvi *.log *.out *.toc
-all: all-am
+docs_DATA = $(srcdir)/*.pdf
+EXTRA_DIST = $(srcdir)/*.pdf
+all: all-recursive
 
 .SUFFIXES:
-$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
 	    *$$dep*) \
@@ -210,9 +214,9 @@
 $(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 
-$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+$(top_srcdir)/configure:  $(am__configure_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
-$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
 	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
 
 mostlyclean-libtool:
@@ -237,12 +241,137 @@
 	  echo " rm -f '$(DESTDIR)$(docsdir)/$$f'"; \
 	  rm -f "$(DESTDIR)$(docsdir)/$$f"; \
 	done
+
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run `make' without going through this Makefile.
+# To change the values of `make' variables: instead of editing Makefiles,
+# (1) if the variable is set in `config.status', edit `config.status'
+#     (which will cause the Makefiles to be regenerated when you run `make');
+# (2) otherwise, pass the desired values on the `make' command line.
+$(RECURSIVE_TARGETS):
+	@failcom='exit 1'; \
+	for f in x $$MAKEFLAGS; do \
+	  case $$f in \
+	    *=* | --[!k]*);; \
+	    *k*) failcom='fail=yes';; \
+	  esac; \
+	done; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
+$(RECURSIVE_CLEAN_TARGETS):
+	@failcom='exit 1'; \
+	for f in x $$MAKEFLAGS; do \
+	  case $$f in \
+	    *=* | --[!k]*);; \
+	    *k*) failcom='fail=yes';; \
+	  esac; \
+	done; \
+	dot_seen=no; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	rev=''; for subdir in $$list; do \
+	  if test "$$subdir" = "."; then :; else \
+	    rev="$$subdir $$rev"; \
+	  fi; \
+	done; \
+	rev="$$rev ."; \
+	target=`echo $@ | sed s/-recursive//`; \
+	for subdir in $$rev; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	  || eval $$failcom; \
+	done && test -z "$$fail"
+tags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) tags); \
+	done
+ctags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) ctags); \
+	done
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	mkid -fID $$unique
 tags: TAGS
-TAGS:
 
+TAGS: tags-recursive $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      tags="$$tags $$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	if test -z "$(ETAGS_ARGS)$$tags$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	    $$tags $$unique; \
+	fi
 ctags: CTAGS
-CTAGS:
+CTAGS: ctags-recursive $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	tags=; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '    { files[$$0] = 1; } \
+	       END { for (i in files) print i; }'`; \
+	test -z "$(CTAGS_ARGS)$$tags$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$tags $$unique
 
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && cd $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
 
 distdir: $(DISTFILES)
 	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
@@ -270,22 +399,40 @@
 	    || exit 1; \
 	  fi; \
 	done
+	list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test -d "$(distdir)/$$subdir" \
+	    || $(MKDIR_P) "$(distdir)/$$subdir" \
+	    || exit 1; \
+	    distdir=`$(am__cd) $(distdir) && pwd`; \
+	    top_distdir=`$(am__cd) $(top_distdir) && pwd`; \
+	    (cd $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$top_distdir" \
+	        distdir="$$distdir/$$subdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
 check-am: all-am
-check: check-am
+check: check-recursive
 all-am: Makefile $(DATA)
-installdirs:
+installdirs: installdirs-recursive
+installdirs-am:
 	for dir in "$(DESTDIR)$(docsdir)"; do \
 	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
 	done
-install: install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
 
 install-am: all-am
 	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
 
-installcheck: installcheck-am
+installcheck: installcheck-recursive
 install-strip:
 	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
 	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
@@ -294,7 +441,6 @@
 mostlyclean-generic:
 
 clean-generic:
-	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
 
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
@@ -302,80 +448,77 @@
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
-clean: clean-am
+clean: clean-recursive
 
 clean-am: clean-generic clean-libtool mostlyclean-am
 
-distclean: distclean-am
+distclean: distclean-recursive
 	-rm -f Makefile
-distclean-am: clean-am distclean-generic
+distclean-am: clean-am distclean-generic distclean-tags
 
-dvi: dvi-am
+dvi: dvi-recursive
 
 dvi-am:
 
-html: html-am
+html: html-recursive
 
-info: info-am
+info: info-recursive
 
 info-am:
 
 install-data-am: install-docsDATA
 
-install-dvi: install-dvi-am
+install-dvi: install-dvi-recursive
 
 install-exec-am:
 
-install-html: install-html-am
+install-html: install-html-recursive
 
-install-info: install-info-am
+install-info: install-info-recursive
 
 install-man:
 
-install-pdf: install-pdf-am
+install-pdf: install-pdf-recursive
 
-install-ps: install-ps-am
+install-ps: install-ps-recursive
 
 installcheck-am:
 
-maintainer-clean: maintainer-clean-am
+maintainer-clean: maintainer-clean-recursive
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
-mostlyclean: mostlyclean-am
+mostlyclean: mostlyclean-recursive
 
 mostlyclean-am: mostlyclean-generic mostlyclean-libtool
 
-pdf: pdf-am
+pdf: pdf-recursive
 
 pdf-am:
 
-ps: ps-am
+ps: ps-recursive
 
 ps-am:
 
 uninstall-am: uninstall-docsDATA
 
-.MAKE: install-am install-strip
+.MAKE: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) install-am \
+	install-strip
 
-.PHONY: all all-am check check-am clean clean-generic clean-libtool \
-	distclean distclean-generic distclean-libtool distdir dvi \
-	dvi-am html html-am info info-am install install-am \
-	install-data install-data-am install-docsDATA install-dvi \
-	install-dvi-am install-exec install-exec-am install-html \
-	install-html-am install-info install-info-am install-man \
-	install-pdf install-pdf-am install-ps install-ps-am \
-	install-strip installcheck installcheck-am installdirs \
+.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
+	all all-am check check-am clean clean-generic clean-libtool \
+	ctags ctags-recursive distclean 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-docsDATA install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs installdirs-am \
 	maintainer-clean maintainer-clean-generic mostlyclean \
 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	uninstall uninstall-am uninstall-docsDATA
+	tags tags-recursive uninstall uninstall-am uninstall-docsDATA
 
-
-regen:
-	pdflatex --output-format=dvi asn1c-usage
-	pdflatex --output-format=dvi asn1c-usage
-	pdflatex --output-format=dvi asn1c-usage
-	dvipdf asn1c-usage
 # 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/doc/asn1c-quick.pdf b/doc/asn1c-quick.pdf
index dc64f32..5081540 100644
--- a/doc/asn1c-quick.pdf
+++ b/doc/asn1c-quick.pdf
Binary files differ
diff --git a/doc/asn1c-usage.html b/doc/asn1c-usage.html
deleted file mode 100644
index b6b484b..0000000
--- a/doc/asn1c-usage.html
+++ /dev/null
@@ -1,1811 +0,0 @@
-
-<!--Converted with LaTeX2HTML 2002-2-1 (1.70)
-original version by:  Nikos Drakos, CBLU, University of Leeds
-* revised and updated by:  Marcus Hennecke, Ross Moore, Herb Swan
-* with significant contributions from:
-  Jens Lippmann, Marek Rouchal, Martin Wilck and others -->
-<HTML>
-<HEAD>
-<TITLE>Using the Open Source ASN.1 Compiler</TITLE>
-<META NAME="description" CONTENT="Using the Open Source ASN.1 Compiler">
-<META NAME="keywords" CONTENT="ASN.1, asn1c, compiler, BER, DER, XER">
-
-
-
-</HEAD>
-
-<BODY >
-
-<P>
-
-<P>
-
-<P>
-<H1 ALIGN="CENTER">Using the Open Source ASN.1 Compiler</H1><DIV>
-
-<P ALIGN="CENTER"><STRONG>Lev Walkin &lt;<A HREF=mailto:vlm@lionet.info?Subject=asn1c>vlm@lionet.info</A>&gt;</STRONG></P>
-</DIV>
-
-<P>
-<!-- MATH
- $Revision$
- -->
-<FONT COLOR=red><B>Download the <A HREF=asn1c-usage.pdf>PDF</A> version</B></FONT>
-
-<P>
-<BR>
-
-<H2><A NAME="SECTION01000000000000000000">
-Contents</A>
-</H2>
-<!--Table of Contents-->
-
-<UL>
-<LI><A NAME="tex2html51"
-  HREF="asn1c-usage.html#SECTION02000000000000000000">Using the ASN.1 Compiler</A>
-<UL>
-<LI><A NAME="tex2html52"
-  HREF="asn1c-usage.html#SECTION02100000000000000000">Introduction to the ASN.1 Compiler</A>
-<UL>
-<LI><A NAME="tex2html53"
-  HREF="asn1c-usage.html#SECTION02110000000000000000">Quick start with asn1c</A>
-<LI><A NAME="tex2html54"
-  HREF="asn1c-usage.html#SECTION02120000000000000000">Recognizing compiler output</A>
-<LI><A NAME="tex2html55"
-  HREF="asn1c-usage.html#SECTION02130000000000000000">Command line options</A>
-</UL>
-<LI><A NAME="tex2html56"
-  HREF="asn1c-usage.html#SECTION02200000000000000000">Using the ASN.1 Compiler</A>
-<UL>
-<LI><A NAME="tex2html57"
-  HREF="asn1c-usage.html#SECTION02210000000000000000">Invoking the ASN.1 helper code</A>
-<UL>
-<LI><A NAME="tex2html58"
-  HREF="asn1c-usage.html#SECTION02211000000000000000">Decoding BER</A>
-<LI><A NAME="tex2html59"
-  HREF="asn1c-usage.html#SECTION02212000000000000000">Encoding DER</A>
-<LI><A NAME="tex2html60"
-  HREF="asn1c-usage.html#SECTION02213000000000000000">Encoding XER</A>
-<LI><A NAME="tex2html61"
-  HREF="asn1c-usage.html#SECTION02214000000000000000">Decoding XER</A>
-<LI><A NAME="tex2html62"
-  HREF="asn1c-usage.html#SECTION02215000000000000000">Validating the target structure</A>
-<LI><A NAME="tex2html63"
-  HREF="asn1c-usage.html#SECTION02216000000000000000">Printing the target structure</A>
-<LI><A NAME="tex2html64"
-  HREF="asn1c-usage.html#SECTION02217000000000000000">Freeing the target structure</A>
-</UL>
-</UL>
-<LI><A NAME="tex2html65"
-  HREF="asn1c-usage.html#SECTION02300000000000000000">Step by step examples</A>
-<UL>
-<LI><A NAME="tex2html66"
-  HREF="asn1c-usage.html#SECTION02310000000000000000">A ''Rectangle'' Encoder</A>
-<LI><A NAME="tex2html67"
-  HREF="asn1c-usage.html#SECTION02320000000000000000">A ''Rectangle'' Decoder</A>
-</UL>
-<LI><A NAME="tex2html68"
-  HREF="asn1c-usage.html#SECTION02400000000000000000">Constraint validation examples</A>
-<UL>
-<LI><A NAME="tex2html69"
-  HREF="asn1c-usage.html#SECTION02410000000000000000">Adding constraints into ''Rectangle'' type</A>
-</UL>
-</UL><BR>
-<LI><A NAME="tex2html70"
-  HREF="asn1c-usage.html#SECTION03000000000000000000">ASN.1 Basics</A>
-<UL>
-<LI><A NAME="tex2html71"
-  HREF="asn1c-usage.html#SECTION03100000000000000000">Abstract Syntax Notation: ASN.1</A>
-<UL>
-<LI><A NAME="tex2html72"
-  HREF="asn1c-usage.html#SECTION03110000000000000000">Some of the ASN.1 Basic Types</A>
-<UL>
-<LI><A NAME="tex2html73"
-  HREF="asn1c-usage.html#SECTION03111000000000000000">The BOOLEAN type</A>
-<LI><A NAME="tex2html74"
-  HREF="asn1c-usage.html#SECTION03112000000000000000">The INTEGER type</A>
-<LI><A NAME="tex2html75"
-  HREF="asn1c-usage.html#SECTION03113000000000000000">The ENUMERATED type</A>
-<LI><A NAME="tex2html76"
-  HREF="asn1c-usage.html#SECTION03114000000000000000">The OCTET STRING type</A>
-<LI><A NAME="tex2html77"
-  HREF="asn1c-usage.html#SECTION03115000000000000000">The OBJECT IDENTIFIER type</A>
-<LI><A NAME="tex2html78"
-  HREF="asn1c-usage.html#SECTION03116000000000000000">The RELATIVE-OID type</A>
-</UL>
-<LI><A NAME="tex2html79"
-  HREF="asn1c-usage.html#SECTION03120000000000000000">Some of the ASN.1 String Types</A>
-<UL>
-<LI><A NAME="tex2html80"
-  HREF="asn1c-usage.html#SECTION03121000000000000000">The IA5String type</A>
-<LI><A NAME="tex2html81"
-  HREF="asn1c-usage.html#SECTION03122000000000000000">The UTF8String type</A>
-<LI><A NAME="tex2html82"
-  HREF="asn1c-usage.html#SECTION03123000000000000000">The NumericString type</A>
-<LI><A NAME="tex2html83"
-  HREF="asn1c-usage.html#SECTION03124000000000000000">The PrintableString type</A>
-<LI><A NAME="tex2html84"
-  HREF="asn1c-usage.html#SECTION03125000000000000000">The VisibleString type</A>
-</UL>
-<LI><A NAME="tex2html85"
-  HREF="asn1c-usage.html#SECTION03130000000000000000">ASN.1 Constructed Types</A>
-<UL>
-<LI><A NAME="tex2html86"
-  HREF="asn1c-usage.html#SECTION03131000000000000000">The SEQUENCE type</A>
-<LI><A NAME="tex2html87"
-  HREF="asn1c-usage.html#SECTION03132000000000000000">The SET type</A>
-<LI><A NAME="tex2html88"
-  HREF="asn1c-usage.html#SECTION03133000000000000000">The CHOICE type</A>
-<LI><A NAME="tex2html89"
-  HREF="asn1c-usage.html#SECTION03134000000000000000">The SEQUENCE OF type</A>
-<LI><A NAME="tex2html90"
-  HREF="asn1c-usage.html#SECTION03135000000000000000">The SET OF type</A>
-</UL>
-</UL>
-</UL><BR>
-<LI><A NAME="tex2html91"
-  HREF="asn1c-usage.html#SECTION04000000000000000000">Bibliography</A>
-</UL>
-<!--End of Table of Contents-->
-
-<P>
-
-<P>
-
-<H1><A NAME="SECTION02000000000000000000">
-Using the ASN.1 Compiler</A>
-</H1>
-
-<P>
-
-<H1><A NAME="SECTION02100000000000000000">
-Introduction to the ASN.1 Compiler</A>
-</H1>
-
-<P>
-The purpose of the ASN.1 compiler, of which this document is part,
-is to convert the specifications in ASN.1 notation into some other
-language. At this moment, only C and C++ target languages are supported,
-the latter is in upward compatibility mode.
-
-<P>
-The compiler reads the specification and emits a series of target
-language structures (C's structs, unions, enums) describing the corresponding
-ASN.1 types. The compiler also creates the code which allows automatic
-serialization and deserialization of these structures using several
-standardized encoding rules (BER, DER, XER).
-
-<P>
-For example, suppose the following ASN.1 module is given<A NAME="tex2html1"
-  HREF="#foot843"><SUP>1.1</SUP></A>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-RectangleTest&nbsp;DEFINITIONS&nbsp;::=
-BEGIN
-&nbsp;
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;Height&nbsp;of&nbsp;the&nbsp;rectangle
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;Width&nbsp;of&nbsp;the&nbsp;rectangle
-}
-&nbsp;
-END
-</PRE>
-</BLOCKQUOTE>
-The compiler would read this ASN.1 definition and produce the following
-C type<A NAME="tex2html2"
-  HREF="#foot844"><SUP>1.2</SUP></A>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-typedef&nbsp;struct&nbsp;Rectangle_s&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;height;
-&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;width;
-}&nbsp;Rectangle_t;
-</PRE>
-</BLOCKQUOTE>
-It would also create the code for converting this structure into platform-independent
-wire representation (a serializer API) and the decoder of such wire
-representation back into local, machine-specific type (a deserializer
-API).
-
-<P>
-
-<H1><A NAME="SECTION02110000000000000000">
-Quick start with asn1c</A>
-</H1>
-
-<P>
-After building and installing the compiler, the <I>asn1c</I><A NAME="tex2html3"
-  HREF="#foot845"><SUP>1.3</SUP></A> command may be used to compile the ASN.1 module<A NAME="tex2html4"
-  HREF="#foot846"><SUP>1.4</SUP></A>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-asn1c&nbsp;<I>&lt;module.asn1&gt;</I>
-</PRE>
-</BLOCKQUOTE>
-If several ASN.1 modules contain interdependencies, all of the files
-must be specified altogether:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-asn1c&nbsp;<I>&lt;module1.asn1&gt;&nbsp;&lt;module2.asn1&gt;&nbsp;...</I>
-</PRE>
-</BLOCKQUOTE>
-The compiler <B>-E</B> and <B>-EF</B> options are used for testing
-the parser and the semantic fixer, respectively. These options will
-instruct the compiler to dump out the parsed (and fixed, if <B>-F</B>
-is involved) ASN.1 specification as it was &#34;understood&#34;
-by the compiler. It might be useful to check whether a particular
-syntactic construction is properly supported by the compiler.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-asn1c&nbsp;<B>-EF</B>&nbsp;<I>&lt;module-to-test.asn1&gt;</I>
-</PRE>
-</BLOCKQUOTE>
-The <B>-P</B> option is used to dump the compiled output on the
-screen instead of creating a bunch of .c and .h files on disk in the
-current directory. You would probably want to start with <B>-P</B>
-option instead of creating a mess in your current directory. Another
-option, <B>-R</B>, asks compiler to only generate the files which
-need to be generated, and supress linking in the numerous support
-files.
-
-<P>
-Print the compiled output instead of creating multiple source files:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-asn1c&nbsp;<B>-P</B>&nbsp;<I>&lt;module-to-compile-and-print.asn1&gt;</I>
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H1><A NAME="SECTION02120000000000000000">
-Recognizing compiler output</A>
-</H1>
-
-<P>
-After compiling, the following entities will be created in your current
-directory:
-
-<P>
-
-<UL>
-<LI>A set of .c and .h files, generally a single pair for each type defined
-in the ASN.1 specifications. These files will be named similarly to
-the ASN.1 types (<I>Rectangle.c</I> and <I>Rectangle.h</I> for the
-RectangleTest ASN.1 module defined in the beginning of this document).
-</LI>
-<LI>A set of helper .c and .h files which contain generic encoders, decoders
-and other useful routines. There will be quite a few of them, some
-of them even are not always necessary, but the overall amount of code
-after compilation will be rather small anyway.
-</LI>
-<LI>A <I>Makefile.am.sample</I> file mentioning all the files created
-at the earlier steps. This file is suitable for either automake suite
-or the plain `make` utility.
-</LI>
-</UL>
-It is your responsibility to create .c file with the <I>int main()</I>
-routine.
-
-<P>
-In other words, after compiling the Rectangle module, you have the
-following set of files: { Makefile.am.sample, Rectangle.c, Rectangle.h,
-<B>...</B> }, where <B>''...''</B> stands for the
-set of additional ''helper'' files created by the compiler. If you
-add a simple file with the <I>int main()</I> routine, it would even
-be possible to compile everything with the single instruction:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-cc&nbsp;-I.&nbsp;-o&nbsp;rectangle.exe&nbsp;*.c&nbsp;&nbsp;&nbsp;#&nbsp;It&nbsp;could&nbsp;be&nbsp;<I>that</I>&nbsp;simple
-</PRE>
-</BLOCKQUOTE>
-Refer to the Chapter cha:Step-by-step-examples for a sample
-<I>int main()</I> routine.
-
-<P>
-
-<H1><A NAME="SECTION02130000000000000000">
-Command line options</A>
-</H1>
-
-<P>
-The <A HREF=#Table1>Table 1</A> summarizes various options affecting
-the compiler's behavior.
-
-<P>
-<BR><P></P>
-<DIV ALIGN="CENTER"><A NAME="851"></A>
-<TABLE>
-<CAPTION><STRONG><A NAME=Table1>Table 1:</A></STRONG>
-The list of asn1c command line options</CAPTION>
-<TR><TD><TABLE COLS=2 BORDER FRAME=BOX RULES=GROUPS>
-<COLGROUP><COL ALIGN=LEFT><COLGROUP><COL ALIGN=JUSTIFY WIDTH="3in">
-<TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP> 
-<B><FONT SIZE="-1">Overall Options</FONT></B></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<B><FONT SIZE="-1">Description</FONT></B></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-E</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Stop after the parsing stage and print the reconstructed ASN.1
-specification code to the standard output.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-F</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Used together with -E, instructs the compiler to stop after
-the ASN.1 syntax tree fixing stage and dump the reconstructed ASN.1
-specification to the standard output.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-P</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Dump the compiled output to the standard output instead of
-cre- ating the target language files on disk.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-R</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Restrict the compiler to generate only the ASN.1 tables, omit-
-ting the usual support code.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-S</FONT> <I><FONT SIZE="-1">&lt;directory&gt;</FONT></I></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Use the specified directory with ASN.1 skeleton files.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-X</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Generate the XML DTD for the specified ASN.1 modules.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><B><FONT SIZE="-1">Warning Options</FONT></B></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<B><FONT SIZE="-1">Description</FONT></B></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-Werror</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Treat warnings as errors; abort if any warning is produced.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-Wdebug-lexer</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Enable lexer debugging during the ASN.1 parsing stage.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-Wdebug-fixer</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
- <FONT SIZE="-1">Enable ASN.1 syntax  tree  fixer  debugging  during  the
- fixing stage.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-Wdebug-compiler</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Enable debugging during the actual compile time.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><B><FONT SIZE="-1">Language Options</FONT></B></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<B><FONT SIZE="-1">Description</FONT></B></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fall-defs-global</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Normally the compiler hides the definitions (asn_DEF_xxx)
-of the inner structure elements (members of SEQUENCE, SET and other
-types). This option makes all such definitions global. Enabling this
-option may pollute the namespace by making lots of asn_DEF_xxx structures
-globally visible, but will allow you to manipulate (encode and decode)
-the individual members of any complex ASN.1 structure.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fbless-SIZE</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Allow SIZE() constraint for INTEGER, ENUMERATED, and other
-types for which this constraint is normally prohibited by the standard.
-This is a violation of an ASN.1 standard and compiler may fail to
-produce the meaningful code.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fcompound-names</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Use complex names for C structures. Using complex names prevents
-name clashes in case the module reuses the same identifiers in multiple
-contexts.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-findirect-choice</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">When generating code for a CHOICE type, compile 
-the CHOICE members as indirect pointers instead of 
-declaring them inline. Consider using this option
-together with <B>-fno-include-deps</B> to prevent circular references.
-</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fknown-extern-type=<I>&lt;name&gt;</I></FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Pretend the specified type is known. The compiler will 
-assume the target language source files for the given 
-type have been provided manually.
-</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fnative-types</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Use the native machine's data types (int, double) whenever
-possible, instead of the compound INTEGER_t, ENUMERATED_t and REAL_t
-types. </FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fno-constraints</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Do not generate ASN.1 subtype constraint checking code. This
-may produce a shorter executable.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fno-include-deps</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Do not generate courtesy #include lines for non-critical
-dependencies.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-funnamed-unions</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Enable  unnamed  unions  in the definitions of target language's
-structures.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-fskeletons-copy</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Copy support files rather than symlink them.</FONT></TD></TR>
-</TBODY><TBODY>
-
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><B><FONT SIZE="-1">Output Options</FONT></B></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<B><FONT SIZE="-1">Description</FONT></B></TD></TR>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP>
-
-<FONT SIZE="-1">-print-constraints</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">When -EF are also specified, this option forces the compiler
-to explain its internal understanding of subtype constraints.</FONT></TD></TR>
-</TBODY><TBODY>
-<TR><TD VALIGN=BASELINE ALIGN=LEFT NOWRAP><FONT SIZE="-1">-print-lines</FONT></TD><TD VALIGN=BASELINE ALIGN=LEFT WIDTH="216">
-<FONT SIZE="-1">Generate &#34;- #line&#34; comments in -E output.</FONT></TD></TR>
-</TBODY>
-</TABLE>
-
-<P>
-</TD></TR>
-</TABLE>
-</DIV><P></P><BR>
-
-<P>
-
-<H1><A NAME="SECTION02200000000000000000">
-Using the ASN.1 Compiler</A>
-</H1>
-
-<P>
-
-<H1><A NAME="SECTION02210000000000000000">
-Invoking the ASN.1 helper code</A>
-</H1>
-
-<P>
-First of all, you should include one or more header files into your
-application. Typically, it is enough to include the header file of
-the main PDU type. For our Rectangle module, including the Rectangle.h
-file is sufficient:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-#include&nbsp;&lt;Rectangle.h&gt;
-</PRE>
-</BLOCKQUOTE>
-The header files defines the C structure corresponding to the ASN.1
-definition of a rectangle and the declaration of the ASN.1 type descriptor,
-which is used as an argument to most of the functions provided by
-the ASN.1 module. For example, here is the code which frees the Rectangle_t
-structure:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-Rectangle_t&nbsp;*rect&nbsp;=&nbsp;...;
-&nbsp;
-asn_DEF_Rectangle.free_struct(&amp;asn_DEF_Rectangle,
-&nbsp;&nbsp;&nbsp;&nbsp;rect,&nbsp;0);
-</PRE>
-</BLOCKQUOTE>
-This code defines a <I>rect</I> pointer which points to the Rectangle_t
-structure which needs to be freed. The second line invokes the generic
-<I>free_struct()</I> routine created specifically for this Rectangle_t
-structure. The <I>asn_DEF_Rectangle</I> is the type descriptor,
-which holds a collection of routines to deal with the Rectangle_t
-structure.
-
-<P>
-The following member functions of the asn_DEF_Rectangle type descriptor
-are of interest:
-
-<P>
-<DL>
-<DT><STRONG>ber_decoder</STRONG></DT>
-<DD>This is the generic <I>restartable</I><A NAME="tex2html6"
-  HREF="#foot181"><SUP>2.1</SUP></A> BER decoder (Basic Encoding Rules). This decoder would create
-and/or fill the target structure for you. Please refer to Section
-sub:Decoding-BER.
-</DD>
-<DT><STRONG>der_encoder</STRONG></DT>
-<DD>This is the generic DER encoder (Distinguished Encoding
-Rules). This encoder will take the target structure and encode it
-into a series of bytes. Please refer to Section <A HREF="#sub:Encoding-DER">Encoding DER</A>.
-</DD>
-<DT><STRONG>xer_encoder</STRONG></DT>
-<DD>This is the XER encoder (XML Encoding Rules). This
-encoder will take the target structure and represent it as an XML
-(text) document using either BASIC-XER or CANONICAL-XER encoding rules.
-Please refer to Section <A HREF="#sub:Encoding-XER">Encoding XER</A>.
-</DD>
-<DT><STRONG>xer_decoder</STRONG></DT>
-<DD>This is the generic XER decoder. It takes both BASIC-XER
-or CANONICAL-XER encodings and deserializes the data into a local,
-machine-dependent representation. Please refer to Section <A HREF="#sub:Decoding-XER">Decoding XER</A>.
-</DD>
-<DT><STRONG>check_constraints</STRONG></DT>
-<DD>Check that the contents of the target structure
-are semantically valid and constrained to appropriate implicit or
-explicit subtype constraints. Please refer to Section <A HREF="#sub:Validating-the-target">Validating the target</A>.
-</DD>
-<DT><STRONG>print_struct</STRONG></DT>
-<DD>This function convert the contents of the passed target
-structure into human readable form. This form is not formal and cannot
-be converted back into the structure, but it may turn out to be useful
-for debugging or quick-n-dirty printing. Please refer to Section <A HREF="#sub:Printing-the-target">Printing the target</A>.
-</DD>
-<DT><STRONG>free_struct</STRONG></DT>
-<DD>This is a generic disposal which frees the target structure.
-Please refer to Section <A HREF="#sub:Freeing-the-target">Freeing the target</A>.
-</DD>
-</DL>
-Each of the above function takes the type descriptor (<I>asn_DEF_...</I>)
-and the target structure (<I>rect</I>, in the above example).
-
-<P>
-
-<H2><A NAME="SECTION02211000000000000000"></A><A NAME="sub:Decoding-BER"></A><BR>
-Decoding BER
-</H2>
-
-<P>
-The Basic Encoding Rules describe the most widely used (by the ASN.1
-community) way to encode and decode a given structure in a machine-independent
-way. Several other encoding rules (CER, DER) define a more restrictive
-versions of BER, so the generic BER parser is also capable of decoding
-the data encoded by CER and DER encoders. The opposite is not true.
-
-<P>
-<I>The ASN.1 compiler provides the generic BER decoder which is
-implicitly capable of decoding BER, CER and DER encoded data.</I>
-
-<P>
-The decoder is restartable (stream-oriented), which means that in
-case the buffer has less data than it is expected, the decoder will
-process whatever there is available and ask for more data to be provided.
-Please note that the decoder may actually process less data than it
-was given in the buffer, which means that you must be able to make
-the next buffer contain the unprocessed part of the previous buffer.
-
-<P>
-Suppose, you have two buffers of encoded data: 100 bytes and 200 bytes.
-
-<P>
-
-<UL>
-<LI>You may concatenate these buffers and feed the BER decoder with 300
-bytes of data, or
-</LI>
-<LI>You may feed it the first buffer of 100 bytes of data, realize that
-the ber_decoder consumed only 95 bytes from it and later feed the
-decoder with 205 bytes buffer which consists of 5 unprocessed bytes
-from the first buffer and the additional 200 bytes from the second
-buffer.
-</LI>
-</UL>
-This is not as convenient as it could be (like, the BER encoder could
-consume the whole 100 bytes and keep these 5 bytes in some temporary
-storage), but in case of existing stream based processing it might
-actually fit well into existing algorithm. Suggestions are welcome.
-
-<P>
-Here is the simplest example of BER decoding.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-Rectangle_t&nbsp;*
-simple_deserializer(const&nbsp;void&nbsp;*buffer,&nbsp;size_t&nbsp;buf_size)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;Rectangle_t&nbsp;*rect&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Note&nbsp;this&nbsp;0!&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;asn_dec_rval_t&nbsp;rval;
-&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;rval&nbsp;=&nbsp;<B>asn_DEF_Rectangle.ber_decoder</B>(0,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&amp;asn_DEF_Rectangle,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(void&nbsp;**)&amp;rect,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;buffer,&nbsp;buf_size,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0);
-&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;if(rval<B>.code</B>&nbsp;==&nbsp;RC_OK)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;rect;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Decoding&nbsp;succeeded&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Free&nbsp;partially&nbsp;decoded&nbsp;rect&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;asn_DEF_Rectangle.free_struct(
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rect,&nbsp;0);
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;0;
-&nbsp;&nbsp;&nbsp;&nbsp;}
-}
-</PRE>
-</BLOCKQUOTE>
-The code above defines a function, <I>simple_deserializer</I>, which
-takes a buffer and its length and is expected to return a pointer
-to the Rectangle_t structure. Inside, it tries to convert the bytes
-passed into the target structure (rect) using the BER decoder and
-returns the rect pointer afterwards. If the structure cannot be deserialized,
-it frees the memory which might be left allocated by the unfinished
-<I>ber_decoder</I> routine and returns 0 (no data). (This <B>freeing
-is necessary</B> because the ber_decoder is a restartable procedure,
-and may fail just because there is more data needs to be provided
-before decoding could be finalized). The code above obviously does
-not take into account the way the <I>ber_decoder()</I> failed, so
-the freeing is necessary because the part of the buffer may already
-be decoded into the structure by the time something goes wrong.
-
-<P>
-A little less wordy would be to invoke a globally available <I>ber_decode()</I>
-function instead of dereferencing the asn_DEF_Rectangle type descriptor:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-rval&nbsp;=&nbsp;ber_decode(0,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;(void&nbsp;**)&amp;rect,
-&nbsp;&nbsp;&nbsp;&nbsp;buffer,&nbsp;buf_size);
-</PRE>
-</BLOCKQUOTE>
-Note that the initial (asn_DEF_Rectangle.ber_decoder) reference
-is gone, and also the last argument (0) is no longer necessary.
-
-<P>
-These two ways of BER decoder invocations are fully equivalent.
-
-<P>
-The BER de<I>coder</I> may fail because of (<I>the following RC_...
-codes are defined in ber_decoder.h</I>):
-
-<P>
-
-<UL>
-<LI>RC_WMORE: There is more data expected than it is provided (stream
-mode continuation feature);
-</LI>
-<LI>RC_FAIL: General failure to decode the buffer;
-</LI>
-<LI>... other codes may be defined as well.
-</LI>
-</UL>
-Together with the return code (.code) the asn_dec_rval_t type contains
-the number of bytes which is consumed from the buffer. In the previous
-hypothetical example of two buffers (of 100 and 200 bytes), the first
-call to ber_decode() would return with .code = RC_WMORE and .consumed
-= 95. The .consumed field of the BER decoder return value is <B>always</B>
-valid, even if the decoder succeeds or fails with any other return
-code.
-
-<P>
-Please look into ber_decoder.h for the precise definition of ber_decode()
-and related types.
-
-<P>
-
-<H2><A NAME="SECTION02212000000000000000"></A><A NAME="sub:Encoding-DER"></A><BR>
-Encoding DER
-</H2>
-
-<P>
-The Distinguished Encoding Rules is the <I>canonical</I> variant of
-BER encoding rules. The DER is best suited to encode the structures
-where all the lengths are known beforehand. This is probably exactly
-how you want to encode: either after a BER decoding or after a manual
-fill-up, the target structure contains the data which size is implicitly
-known before encoding. Among other uses, the DER encoding is used
-to encode X.509 certificates.
-
-<P>
-As with BER decoder, the DER encoder may be invoked either directly
-from the ASN.1 type descriptor (asn_DEF_Rectangle) or from the stand-alone
-function, which is somewhat simpler:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-&nbsp;
-/*
-&nbsp;*&nbsp;This&nbsp;is&nbsp;the&nbsp;serializer&nbsp;itself,
-&nbsp;*&nbsp;it&nbsp;supplies&nbsp;the&nbsp;DER&nbsp;encoder&nbsp;with&nbsp;the
-&nbsp;*&nbsp;pointer&nbsp;to&nbsp;the&nbsp;custom&nbsp;output&nbsp;function.
-&nbsp;*/
-ssize_t
-simple_serializer(FILE&nbsp;*ostream,&nbsp;Rectangle_t&nbsp;*rect)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;asn_enc_rval_t&nbsp;er;&nbsp;&nbsp;/*&nbsp;Encoder&nbsp;return&nbsp;value&nbsp;*/
-&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;er&nbsp;=&nbsp;der_encode(&amp;asn_DEF_Rect,&nbsp;rect,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;write_stream,&nbsp;ostream);
-&nbsp;&nbsp;&nbsp;&nbsp;if(er.<B>encoded</B>&nbsp;==&nbsp;-1)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*&nbsp;Failed&nbsp;to&nbsp;encode&nbsp;the&nbsp;rectangle&nbsp;data.
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''Cannot&nbsp;encode&nbsp;%s:&nbsp;%s&#92;n'',
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;er.<B>failed_type</B>-&gt;name,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;strerror(errno));
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;-1;
-&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Return&nbsp;the&nbsp;number&nbsp;of&nbsp;bytes&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;er.encoded;
-&nbsp;&nbsp;&nbsp;&nbsp;}
-}
-</PRE>
-</BLOCKQUOTE>
-As you see, the DER encoder does not write into some sort of buffer
-or something. It just invokes the custom function (possible, multiple
-times) which would save the data into appropriate storage. The optional
-argument <I>app_key</I> is opaque for the DER encoder code and just
-used by <I>_write_stream()</I> as the pointer to the appropriate
-output stream to be used.
-
-<P>
-If the custom write function is not given (passed as 0), then the
-DER encoder will essentially do the same thing (i.e., encode the data)
-but no callbacks will be invoked (so the data goes nowhere). It may
-prove useful to determine the size of the structure's encoding before
-actually doing the encoding<A NAME="tex2html7"
-  HREF="#foot250"><SUP>2.2</SUP></A>.
-
-<P>
-Please look into der_encoder.h for the precise definition of der_encode()
-and related types.
-
-<P>
-
-<H2><A NAME="SECTION02213000000000000000"></A><A NAME="sub:Encoding-XER"></A><BR>
-Encoding XER
-</H2>
-
-<P>
-The XER stands for XML Encoding Rules, where XML, in turn, is eXtensible
-Markup Language, a text-based format for information exchange. The
-encoder routine API comes in two flavors: stdio-based and callback-based.
-With the callback-based encoder, the encoding process is very similar
-to the DER one, described in Section <A HREF="#sub:Encoding-DER">Encoding DER</A>. The
-following example uses the definition of write_stream() from up there.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-/*
-&nbsp;*&nbsp;This&nbsp;procedure&nbsp;generates&nbsp;the&nbsp;XML&nbsp;document
-&nbsp;*&nbsp;by&nbsp;invoking&nbsp;the&nbsp;XER&nbsp;encoder.
-&nbsp;*&nbsp;NOTE:&nbsp;Do&nbsp;not&nbsp;copy&nbsp;this&nbsp;code&nbsp;verbatim!
-&nbsp;*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If&nbsp;the&nbsp;stdio&nbsp;output&nbsp;is&nbsp;necessary,
-&nbsp;*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;use&nbsp;the&nbsp;xer_fprint()&nbsp;procedure&nbsp;instead.
-&nbsp;*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See&nbsp;Section&nbsp;<A HREF="#sub:Printing-the-target">Printing the target</A>.
-&nbsp;*/
-int
-print_as_XML(FILE&nbsp;*ostream,&nbsp;Rectangle_t&nbsp;*rect)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;asn_enc_rval_t&nbsp;er;&nbsp;&nbsp;/*&nbsp;Encoder&nbsp;return&nbsp;value&nbsp;*/
-&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;er&nbsp;=&nbsp;xer_encode(&amp;asn_DEF_Rectangle,&nbsp;rect,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;XER_F_BASIC,&nbsp;/*&nbsp;BASIC-XER&nbsp;or&nbsp;CANONICAL-XER&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;write_stream,&nbsp;ostream);
-&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;(er.encoded&nbsp;==&nbsp;-1)&nbsp;?&nbsp;-1&nbsp;:&nbsp;0;
-}
-</PRE>
-</BLOCKQUOTE>
-Please look into xer_encoder.h for the precise definition of xer_encode()
-and related types.
-
-<P>
-See Section [<A HREF="#sub:Printing-the-target">Printing the target</A>] for the example of stdio-based
-XML encoder and other pretty-printing suggestions.
-
-<P>
-
-<H2><A NAME="SECTION02214000000000000000"></A><A NAME="sub:Decoding-XER"></A><BR>
-Decoding XER
-</H2>
-
-<P>
-The data encoded using the XER rules can be subsequently decoded using
-the xer_decode() API call:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-Rectangle_t&nbsp;*
-XML_to_Rectangle(const&nbsp;void&nbsp;*buffer,&nbsp;size_t&nbsp;buf_size)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;Rectangle_t&nbsp;*rect&nbsp;=&nbsp;0;&nbsp;/*&nbsp;Note&nbsp;this&nbsp;0!&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;asn_dec_rval_t&nbsp;rval;
-&nbsp;&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;rval&nbsp;=&nbsp;xer_decode(0,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;(void&nbsp;**)&amp;rect,
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;buffer,&nbsp;buf_size);
-&nbsp;&nbsp;&nbsp;&nbsp;if(rval<B>.code</B>&nbsp;==&nbsp;RC_OK)&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;rect;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Decoding&nbsp;succeeded&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Free&nbsp;partially&nbsp;decoded&nbsp;rect&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;asn_DEF_Rectangle.free_struct(
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rect,&nbsp;0);
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;0;
-&nbsp;&nbsp;&nbsp;&nbsp;}
-}
-</PRE>
-</BLOCKQUOTE>
-The decoder takes both BASIC-XER and CANONICAL-XER encodings.
-
-<P>
-The decoder shares its data consumption properties with BER decoder;
-please read the Section <A HREF="#sub:Decoding-BER">Decoding BER</A> to know more.
-
-<P>
-Please look into xer_decoder.h for the precise definition of xer_decode()
-and related types.
-
-<P>
-
-<H2><A NAME="SECTION02215000000000000000"></A><A NAME="sub:Validating-the-target"></A><BR>
-Validating the target structure
-</H2>
-
-<P>
-Sometimes the target structure needs to be validated. For example,
-if the structure was created by the application (as opposed to being
-decoded from some external source), some important information required
-by the ASN.1 specification might be missing. On the other hand, the
-successful decoding of the data from some external source does not
-necessarily mean that the data is fully valid either. It might well
-be the case that the specification describes some subtype constraints
-that were not taken into account during decoding, and it would actually
-be useful to perform the last check when the data is ready to be encoded
-or when the data has just been decoded to ensure its validity according
-to some stricter rules.
-
-<P>
-The asn_check_constraints() function checks the type for various
-implicit and explicit constraints. It is recommended to use asn_check_constraints()
-function after each decoding and before each encoding.
-
-<P>
-Please look into constraints.h for the precise definition of asn_check_constraints()
-and related types.
-
-<P>
-
-<H2><A NAME="SECTION02216000000000000000"></A><A NAME="sub:Printing-the-target"></A><BR>
-Printing the target structure
-</H2>
-
-<P>
-There are two ways to print the target structure: either invoke the
-print_struct member of the ASN.1 type descriptor, or using the asn_fprint()
-function, which is a simpler wrapper of the former:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-asn_fprint(stdout,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rect);
-</PRE>
-</BLOCKQUOTE>
-Please look into constr_TYPE.h for the precise definition of asn_fprint()
-and related types.
-
-<P>
-Another practical alternative to this custom format printing would
-be to invoke XER encoder. The default BASIC-XER encoder performs reasonable
-formatting for the output to be useful and human readable. To invoke
-the XER decoder in a manner similar to asn_fprint(), use the xer_fprint()
-call:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-xer_fprint(stdout,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rect);
-</PRE>
-</BLOCKQUOTE>
-See Section <A HREF="#sub:Encoding-XER">Encoding XER</A> for XML-related details.
-
-<P>
-
-<H2><A NAME="SECTION02217000000000000000"></A><A NAME="sub:Freeing-the-target"></A><BR>
-Freeing the target structure
-</H2>
-
-<P>
-Freeing the structure is slightly more complex than it may seem to.
-When the ASN.1 structure is freed, all the members of the structure
-and their submembers etc etc are recursively freed too. But it might
-not be feasible to free the structure itself. Consider the following
-case:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-struct&nbsp;my_figure&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;The&nbsp;custom&nbsp;structure&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;flags;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;&lt;some&nbsp;custom&nbsp;member&gt;&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;The&nbsp;type&nbsp;is&nbsp;generated&nbsp;by&nbsp;the&nbsp;ASN.1&nbsp;compiler&nbsp;*/
-&nbsp;&nbsp;&nbsp;&nbsp;<I>Rectangle_t&nbsp;rect;</I>
-&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;other&nbsp;members&nbsp;of&nbsp;the&nbsp;structure&nbsp;*/
-};
-</PRE>
-</BLOCKQUOTE>
-In this example, the application programmer defined a custom structure
-with one ASN.1-derived member (rect). This member is not a reference
-to the Rectangle_t, but an in-place inclusion of the Rectangle_t
-structure. If the freeing is necessary, the usual procedure of freeing
-everything must not be applied to the &amp;rect pointer itself, because
-it does not point to the memory block directly allocated by the memory
-allocation routine, but instead lies within a block allocated for
-the my_figure structure.
-
-<P>
-To solve this problem, the free_struct routine has the additional
-argument (besides the obvious type descriptor and target structure
-pointers), which is the flag specifying whether the outer pointer
-itself must be freed (0, default) or it should be left intact (non-zero
-value).
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<B>/*&nbsp;1.&nbsp;Rectangle_t&nbsp;is&nbsp;defined&nbsp;within&nbsp;my_figure&nbsp;*/</B>
-struct&nbsp;my_figure&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;Rectangle_t&nbsp;rect;
-}&nbsp;*mf&nbsp;=&nbsp;<B>...</B>;
-/*
-&nbsp;*&nbsp;Freeing&nbsp;the&nbsp;Rectangle_t
-&nbsp;*&nbsp;without&nbsp;freeing&nbsp;the&nbsp;mf-&gt;rect&nbsp;area
-&nbsp;*/
-asn_DEF_Rectangle.free_struct(
-&nbsp;&nbsp;&nbsp;&nbsp;&amp;asn_DEF_Rectangle,&nbsp;&amp;mf-&gt;rect,&nbsp;<B>1</B>&nbsp;<B>/*&nbsp;!free&nbsp;*/</B>);
-&nbsp;&nbsp;&nbsp;&nbsp;
-&nbsp;&nbsp;
-<B>/*&nbsp;2.&nbsp;Rectangle_t&nbsp;is&nbsp;a&nbsp;stand-alone&nbsp;pointer&nbsp;*/</B>
-Rectangle_t&nbsp;*rect&nbsp;=&nbsp;<B>...</B>;
-/*
-&nbsp;*&nbsp;Freeing&nbsp;the&nbsp;Rectangle_t
-&nbsp;*&nbsp;and&nbsp;freeing&nbsp;the&nbsp;rect&nbsp;pointer
-&nbsp;*/
-asn_DEF_Rectangle.free_struct(
-&nbsp;&nbsp;&nbsp;&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rect,&nbsp;<B>0</B>&nbsp;<B>/*&nbsp;free&nbsp;the&nbsp;pointer&nbsp;too&nbsp;*/</B>);
-</PRE>
-</BLOCKQUOTE>
-It is safe to invoke the <I>free_struct</I> function with the target
-structure pointer set to 0 (NULL), the function will do nothing.
-
-<P>
-
-<H1><A NAME="SECTION02300000000000000000"></A><A NAME="cha:Step-by-step-examples"></A><BR>
-Step by step examples
-</H1>
-
-<P>
-
-<H1><A NAME="SECTION02310000000000000000">
-A ''Rectangle'' Encoder</A>
-</H1>
-
-<P>
-This example will help you to create a simple BER and XER encoder
-of a ''Rectangle'' type used throughout this document.
-
-<P>
-
-<OL>
-<LI>Create a file named <B>rectangle.asn1</B> with the following contents:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-RectangleModule1&nbsp;DEFINITIONS&nbsp;::=
-BEGIN
-&nbsp;
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER,
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER
-}
-&nbsp;
-END
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile it into the set of .c and .h files using asn1c compiler [<A
- HREF="asn1c-usage.html#ASN1C">ASN1C</A>]:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<I>asn1c&nbsp;-fnative-types</I>&nbsp;<B>rectangle.asn1</B>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Alternatively, use the Online ASN.1 compiler [<A
- HREF="asn1c-usage.html#AONL">AONL</A>] by uploading
-the <B>rectangle.asn1</B> file into the Web form and unpacking the
-produced archive on your computer.
-</LI>
-<LI>By this time, you should have gotten multiple files in the current
-directory, including the <B>Rectangle.c</B> and <B>Rectangle.h</B>.
-</LI>
-<LI>Create a main() routine which creates the Rectangle_t structure in
-memory and encodes it using BER and XER encoding rules. Let's name
-the file <B>main.c</B>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<FONT SIZE="-1">#include&nbsp;&lt;stdio.h&gt;</FONT>
-<FONT SIZE="-1">#include&nbsp;&lt;sys/types.h&gt;</FONT>
-<FONT SIZE="-1">#include&nbsp;&lt;Rectangle.h&gt;&nbsp;&nbsp;&nbsp;/*&nbsp;Rectangle&nbsp;ASN.1&nbsp;type&nbsp;&nbsp;*/</FONT>
-&nbsp;
-<FONT SIZE="-1">/*</FONT>
-&nbsp;<FONT SIZE="-1">*&nbsp;This&nbsp;is&nbsp;a&nbsp;custom&nbsp;function&nbsp;which&nbsp;writes&nbsp;the</FONT>
-&nbsp;<FONT SIZE="-1">*&nbsp;encoded&nbsp;output&nbsp;into&nbsp;some&nbsp;FILE&nbsp;stream.</FONT>
-&nbsp;<FONT SIZE="-1">*/</FONT>
-<FONT SIZE="-1">static&nbsp;int</FONT>
-<FONT SIZE="-1">write_out(const&nbsp;void&nbsp;*buffer,&nbsp;size_t&nbsp;size,&nbsp;void&nbsp;*app_key)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;FILE&nbsp;*out_fp&nbsp;=&nbsp;app_key;</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;size_t&nbsp;wrote;</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;wrote&nbsp;=&nbsp;fwrite(buffer,&nbsp;1,&nbsp;size,&nbsp;out_fp);</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;return&nbsp;(wrote&nbsp;==&nbsp;size)&nbsp;?&nbsp;0&nbsp;:&nbsp;-1;</FONT>
-<FONT SIZE="-1">}</FONT>
-&nbsp;
-<FONT SIZE="-1">int&nbsp;main(int&nbsp;ac,&nbsp;char&nbsp;**av)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;Rectangle_t&nbsp;*rectangle;&nbsp;/*&nbsp;Type&nbsp;to&nbsp;encode&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;asn_enc_rval_t&nbsp;ec;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Encoder&nbsp;return&nbsp;value&nbsp;&nbsp;*/</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Allocate&nbsp;the&nbsp;Rectangle_t&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;rectangle&nbsp;=&nbsp;calloc(1,&nbsp;sizeof(Rectangle_t));&nbsp;/*&nbsp;not&nbsp;malloc!&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(!rectangle)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;perror(''calloc()&nbsp;failed'');</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(71);&nbsp;/*&nbsp;better,&nbsp;EX_OSERR&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Initialize&nbsp;the&nbsp;Rectangle&nbsp;members&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;rectangle-&gt;height&nbsp;=&nbsp;42;&nbsp;&nbsp;/*&nbsp;any&nbsp;random&nbsp;value&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;rectangle-&gt;width&nbsp;&nbsp;=&nbsp;23;&nbsp;&nbsp;/*&nbsp;any&nbsp;random&nbsp;value&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;BER&nbsp;encode&nbsp;the&nbsp;data&nbsp;if&nbsp;filename&nbsp;is&nbsp;given&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(ac&nbsp;&lt;&nbsp;2)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''Specify&nbsp;filename&nbsp;for&nbsp;BER&nbsp;output&#92;n'');</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;const&nbsp;char&nbsp;*filename&nbsp;=&nbsp;av[1];</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FILE&nbsp;*fp&nbsp;=&nbsp;fopen(filename,&nbsp;''wb'');&nbsp;&nbsp;&nbsp;/*&nbsp;for&nbsp;BER&nbsp;output&nbsp;*/</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(!fp)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;perror(filename);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(71);&nbsp;/*&nbsp;better,&nbsp;EX_OSERR&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Encode&nbsp;the&nbsp;Rectangle&nbsp;type&nbsp;as&nbsp;BER&nbsp;(DER)&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ec&nbsp;=&nbsp;der_encode(&amp;asn_DEF_Rectangle,</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rectangle,&nbsp;write_out,&nbsp;fp);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fclose(fp);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(ec.encoded&nbsp;==&nbsp;-1)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;''Could&nbsp;not&nbsp;encode&nbsp;Rectangle&nbsp;(at&nbsp;%s)&#92;n'',</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ec.failed_type&nbsp;?&nbsp;ec.failed_type-&gt;name&nbsp;:&nbsp;''unknown'');</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(65);&nbsp;/*&nbsp;better,&nbsp;EX_DATAERR&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''Created&nbsp;%s&nbsp;with&nbsp;BER&nbsp;encoded&nbsp;Rectangle&#92;n'',</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;filename);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Also&nbsp;print&nbsp;the&nbsp;constructed&nbsp;Rectangle&nbsp;XER&nbsp;encoded&nbsp;(XML)&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;xer_fprint(stdout,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rectangle);</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;return&nbsp;0;&nbsp;/*&nbsp;Encoding&nbsp;finished&nbsp;successfully&nbsp;*/</FONT>
-<FONT SIZE="-1">}</FONT>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile all files together using C compiler (varies by platform):
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<I>cc&nbsp;-I.&nbsp;-o</I>&nbsp;<B><I>rencode</I></B>&nbsp;<I>*.c</I>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Voila! You have just created the BER and XER encoder of a Rectangle
-type, named <B>rencode</B>!
-</LI>
-</OL>
-
-
-<P>
-
-<H1><A NAME="SECTION02320000000000000000"></A><A NAME="sec:A-Rectangle-Decoder"></A><BR>
-A ''Rectangle'' Decoder
-</H1>
-
-<P>
-This example will help you to create a simple BER decoder of a simple
-''Rectangle'' type used throughout this document.
-
-<P>
-
-<OL>
-<LI>Create a file named <B>rectangle.asn1</B> with the following contents:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-RectangleModule1&nbsp;DEFINITIONS&nbsp;::=
-BEGIN
-&nbsp;
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER,
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER
-}
-&nbsp;
-END
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile it into the set of .c and .h files using asn1c compiler [<A
- HREF="asn1c-usage.html#ASN1C">ASN1C</A>]:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<I>asn1c&nbsp;-fnative-types</I>&nbsp;<B>rectangle.asn1</B>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Alternatively, use the Online ASN.1 compiler [<A
- HREF="asn1c-usage.html#AONL">AONL</A>] by uploading
-the <B>rectangle.asn1</B> file into the Web form and unpacking the
-produced archive on your computer.
-</LI>
-<LI>By this time, you should have gotten multiple files in the current
-directory, including the <B>Rectangle.c</B> and <B>Rectangle.h</B>.
-</LI>
-<LI>Create a main() routine which takes the binary input file, decodes
-it as it were a BER-encoded Rectangle type, and prints out the text
-(XML) representation of the Rectangle type. Let's name the file <B>main.c</B>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<FONT SIZE="-1">#include&nbsp;&lt;stdio.h&gt;</FONT>
-<FONT SIZE="-1">#include&nbsp;&lt;sys/types.h&gt;</FONT>
-<FONT SIZE="-1">#include&nbsp;&lt;Rectangle.h&gt;&nbsp;&nbsp;&nbsp;/*&nbsp;Rectangle&nbsp;ASN.1&nbsp;type&nbsp;&nbsp;*/</FONT>
-&nbsp;
-<FONT SIZE="-1">int&nbsp;main(int&nbsp;ac,&nbsp;char&nbsp;**av)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;char&nbsp;buf[1024];&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Temporary&nbsp;buffer&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;Rectangle_t&nbsp;*rectangle&nbsp;=&nbsp;0;&nbsp;/*&nbsp;Type&nbsp;to&nbsp;decode&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;asn_dec_rval_t&nbsp;rval;&nbsp;/*&nbsp;Decoder&nbsp;return&nbsp;value&nbsp;&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;FILE&nbsp;*fp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Input&nbsp;file&nbsp;handler&nbsp;&nbsp;&nbsp;&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;size_t&nbsp;size;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Number&nbsp;of&nbsp;bytes&nbsp;read&nbsp;&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;char&nbsp;*filename;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Input&nbsp;file&nbsp;name&nbsp;*/</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Require&nbsp;a&nbsp;single&nbsp;filename&nbsp;argument&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(ac&nbsp;!=&nbsp;2)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''Usage:&nbsp;%s&nbsp;&lt;file.ber&gt;&#92;n'',&nbsp;av[0]);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(64);&nbsp;/*&nbsp;better,&nbsp;EX_USAGE&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;filename&nbsp;=&nbsp;av[1];</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Open&nbsp;input&nbsp;file&nbsp;as&nbsp;read-only&nbsp;binary&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;fp&nbsp;=&nbsp;fopen(filename,&nbsp;''rb'');</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(!fp)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;perror(filename);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(66);&nbsp;/*&nbsp;better,&nbsp;EX_NOINPUT&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Read&nbsp;up&nbsp;to&nbsp;the&nbsp;buffer&nbsp;size&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;size&nbsp;=&nbsp;fread(buf,&nbsp;1,&nbsp;sizeof(buf),&nbsp;fp);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;fclose(fp);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(!size)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''%s:&nbsp;Empty&nbsp;or&nbsp;broken&#92;n'',&nbsp;filename);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(65);&nbsp;/*&nbsp;better,&nbsp;EX_DATAERR&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Decode&nbsp;the&nbsp;input&nbsp;buffer&nbsp;as&nbsp;Rectangle&nbsp;type&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;rval&nbsp;=&nbsp;ber_decode(0,&nbsp;&amp;asn_DEF_Rectangle,</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(void&nbsp;**)&amp;rectangle,&nbsp;buf,&nbsp;size);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;if(rval.code&nbsp;!=&nbsp;RC_OK)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;''%s:&nbsp;Broken&nbsp;Rectangle&nbsp;encoding&nbsp;at&nbsp;byte&nbsp;%ld&#92;n'',</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;filename,&nbsp;(long)rval.consumed);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit(65);&nbsp;/*&nbsp;better,&nbsp;EX_DATAERR&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;}</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;/*&nbsp;Print&nbsp;the&nbsp;decoded&nbsp;Rectangle&nbsp;type&nbsp;as&nbsp;XML&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;xer_fprint(stdout,&nbsp;&amp;asn_DEF_Rectangle,&nbsp;rectangle);</FONT>
-&nbsp;
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;return&nbsp;0;&nbsp;/*&nbsp;Decoding&nbsp;finished&nbsp;successfully&nbsp;*/</FONT>
-<FONT SIZE="-1">}</FONT>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile all files together using C compiler (varies by platform):
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<I>cc&nbsp;-I.&nbsp;-o</I>&nbsp;<B><I>rdecode</I></B>&nbsp;<I>*.c</I>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Voila! You have just created the BER decoder of a Rectangle type,
-named <B>rdecode</B>!
-</LI>
-</OL>
-
-<P>
-
-<H1><A NAME="SECTION02400000000000000000">
-Constraint validation examples</A>
-</H1>
-
-<P>
-This chapter shows how to define ASN.1 constraints and use the generated
-validation code.
-
-<P>
-
-<H1><A NAME="SECTION02410000000000000000">
-Adding constraints into ''Rectangle'' type</A>
-</H1>
-
-<P>
-This example shows how to add basic constraints to the ASN.1 specification
-and how to invoke the constraints validation code in your application.
-
-<P>
-
-<OL>
-<LI>Create a file named <B>rectangle.asn1</B> with the following contents:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-RectangleModuleWithConstraints&nbsp;DEFINITIONS&nbsp;::=
-BEGIN
-&nbsp;
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER&nbsp;(0..100),&nbsp;--&nbsp;Value&nbsp;range&nbsp;constraint
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER&nbsp;(0..MAX)&nbsp;&nbsp;--&nbsp;Makes&nbsp;width&nbsp;non-negative&nbsp;
-}
-&nbsp;
-END
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile the file according to procedures shown in the previous chapter.
-</LI>
-<LI>Modify the Rectangle type processing routine (you can start with the
-main() routine shown in the Section <A HREF="#sec:A-Rectangle-Decoder">A Rectangle Decoder</A>)
-by placing the following snippet of code <I>before</I> encoding and/or
-<I>after</I> decoding the Rectangle type<A NAME="tex2html8"
-  HREF="#foot923"><SUP>4.1</SUP></A>:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-<FONT SIZE="-1">int&nbsp;ret;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;Return&nbsp;value&nbsp;*/</FONT>
-<FONT SIZE="-1">char&nbsp;errbuf[128];&nbsp;&nbsp;/*&nbsp;Buffer&nbsp;for&nbsp;error&nbsp;message&nbsp;*/</FONT>
-<FONT SIZE="-1">size_t&nbsp;errlen&nbsp;=&nbsp;sizeof(errbuf);&nbsp;&nbsp;/*&nbsp;Size&nbsp;of&nbsp;the&nbsp;buffer&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;</FONT>
-<FONT SIZE="-1">/*&nbsp;...&nbsp;here&nbsp;may&nbsp;go&nbsp;Rectangle&nbsp;decoding&nbsp;code&nbsp;...&nbsp;*/</FONT>
-&nbsp;
-<FONT SIZE="-1">ret&nbsp;=&nbsp;asn_check_constraints(&amp;asn_DEF_Rectangle,</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;rectangle,&nbsp;errbuf,&nbsp;&amp;errlen);</FONT>
-<FONT SIZE="-1">/*&nbsp;assert(errlen&nbsp;&lt;&nbsp;sizeof(errbuf));&nbsp;//&nbsp;you&nbsp;may&nbsp;rely&nbsp;on&nbsp;that&nbsp;*/</FONT>
-<FONT SIZE="-1">if(ret)&nbsp;{</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fprintf(stderr,&nbsp;''Constraint&nbsp;validation&nbsp;failed:&nbsp;%s&#92;n'',</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;errbuf&nbsp;&nbsp;&nbsp;/*&nbsp;errbuf&nbsp;is&nbsp;properly&nbsp;nul-terminated&nbsp;*/</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;);</FONT>
-&nbsp;<FONT SIZE="-1">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;/*&nbsp;exit(...);&nbsp;//&nbsp;Replace&nbsp;with&nbsp;appropriate&nbsp;action&nbsp;*/</FONT>
-<FONT SIZE="-1">}</FONT>
-&nbsp;
-<FONT SIZE="-1">/*&nbsp;...&nbsp;here&nbsp;may&nbsp;go&nbsp;Rectangle&nbsp;encoding&nbsp;code&nbsp;...&nbsp;*/</FONT>
-</PRE>
-</BLOCKQUOTE>
-
-</LI>
-<LI>Compile the resulting C code as shown in the previous chapters.
-</LI>
-<LI>Try to test the constraints checking code by assigning integer value
-101 to the <B>.height</B> member of the Rectangle structure, or
-a negative value to the <B>.width</B> member. In either case, the
-program should print ''Constraint validation failed'' message, followed
-by the short explanation why validation did not succeed.
-</LI>
-<LI>Done.
-</LI>
-</OL>
-
-<P>
-
-<H1><A NAME="SECTION03000000000000000000"></A><A NAME="par:ASN.1-Basics"></A><BR>
-ASN.1 Basics
-</H1>
-
-<P>
-
-<H1><A NAME="SECTION03100000000000000000"></A><A NAME="cha:Abstract-Syntax-Notation:"></A><BR>
-Abstract Syntax Notation: ASN.1
-</H1>
-
-<P>
-<I>This chapter defines some basic ASN.1 concepts and describes
-several most widely used types. It is by no means an authoritative
-or complete reference. For more complete ASN.1 description, please
-refer to Olivier Dubuisson's book [<A
- HREF="asn1c-usage.html#Dub00">Dub00</A>] or the ASN.1 body
-of standards itself [<A
- HREF="asn1c-usage.html#ITU-T_ASN.1">ITU-T/ASN.1</A>].</I>
-
-<P>
-The Abstract Syntax Notation One is used to formally describe the
-semantics of data transmitted across the network. Two communicating
-parties may have different formats of their native data types (i.e.
-number of bits in the integer type), thus it is important to have
-a way to describe the data in a manner which is independent from the
-particular machine's representation. The ASN.1 specifications are
-used to achieve the following:
-
-<P>
-
-<UL>
-<LI>The specification expressed in the ASN.1 notation is a formal and
-precise way to communicate the data semantics to human readers;
-</LI>
-<LI>The ASN.1 specifications may be used as input for automatic compilers
-which produce the code for some target language (C, C++, Java, etc)
-to encode and decode the data according to some encoding rules (which
-are also defined by the ASN.1 standard).
-</LI>
-</UL>
-Consider the following example:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER,
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER
-}
-</PRE>
-</BLOCKQUOTE>
-This ASN.1 specification describes a constructed type, <I>Rectangle</I>,
-containing two integer fields. This specification may tell the reader
-that there exists this kind of data structure and that some entity
-may be prepared to send or receive it. The question on <I>how</I>
-that entity is going to send or receive the <I>encoded data</I> is
-outside the scope of ASN.1. For example, this data structure may be
-encoded according to some encoding rules and sent to the destination
-using the TCP protocol. The ASN.1 specifies several ways of encoding
-(or ''serializing'', or ''marshaling'') the data: BER, PER, XER
-and others, including CER and DER derivatives from BER.
-
-<P>
-The complete specification must be wrapped in a module, which looks
-like this:
-
-<P>
-
-<BLOCKQUOTE><PRE>
-RectangleModule1
-&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;iso&nbsp;org(3)&nbsp;dod(6)&nbsp;internet(1)&nbsp;private(4)
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;enterprise(1)&nbsp;spelio(9363)&nbsp;software(1)
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;asn1c(5)&nbsp;docs(2)&nbsp;rectangle(1)&nbsp;1&nbsp;}&nbsp;
-&nbsp;&nbsp;&nbsp;&nbsp;DEFINITIONS&nbsp;AUTOMATIC&nbsp;TAGS&nbsp;::=
-BEGIN
-&nbsp;
---&nbsp;This&nbsp;is&nbsp;a&nbsp;comment&nbsp;which&nbsp;describes&nbsp;nothing.
-Rectangle&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;height&nbsp;&nbsp;INTEGER,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;Height&nbsp;of&nbsp;the&nbsp;rectangle
-&nbsp;&nbsp;&nbsp;&nbsp;width&nbsp;&nbsp;&nbsp;INTEGER&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;Width&nbsp;of&nbsp;the&nbsp;rectangle
-}
-&nbsp;
-END
-</PRE>
-</BLOCKQUOTE>
-The module header consists of module name (RectangleModule1), the
-module object identifier ({...}), a keyword ''DEFINITIONS'', a
-set of module flags (AUTOMATIC TAGS) and ''::= BEGIN''. The module
-ends with an ''END'' statement.
-
-<P>
-
-<H1><A NAME="SECTION03110000000000000000">
-Some of the ASN.1 Basic Types</A>
-</H1>
-
-<P>
-
-<H2><A NAME="SECTION03111000000000000000">
-The BOOLEAN type</A>
-</H2>
-
-<P>
-The BOOLEAN type models the simple binary TRUE/FALSE, YES/NO, ON/OFF
-or a similar kind of two-way choice.
-
-<P>
-
-<H2><A NAME="SECTION03112000000000000000">
-The INTEGER type</A>
-</H2>
-
-<P>
-The INTEGER type is a signed natural number type without any restrictions
-on its size. If the automatic checking on INTEGER value bounds are
-necessary, the subtype constraints must be used.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-SimpleInteger&nbsp;::=&nbsp;INTEGER
-&nbsp;
---&nbsp;An&nbsp;integer&nbsp;with&nbsp;a&nbsp;very&nbsp;limited&nbsp;range
-SmallPositiveInt&nbsp;::=&nbsp;INTEGER&nbsp;(0..127)
-&nbsp;
---&nbsp;Integer,&nbsp;negative
-NegativeInt&nbsp;::=&nbsp;INTEGER&nbsp;(MIN..0)
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H2><A NAME="SECTION03113000000000000000">
-The ENUMERATED type</A>
-</H2>
-
-<P>
-The ENUMERATED type is semantically equivalent to the INTEGER type
-with some integer values explicitly named.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-FruitId&nbsp;::=&nbsp;ENUMERATED&nbsp;{&nbsp;apple(1),&nbsp;orange(2)&nbsp;}
-&nbsp;
---&nbsp;The&nbsp;numbers&nbsp;in&nbsp;braces&nbsp;are&nbsp;optional,
---&nbsp;the&nbsp;enumeration&nbsp;can&nbsp;be&nbsp;performed
---&nbsp;automatically&nbsp;by&nbsp;the&nbsp;compiler
-ComputerOSType&nbsp;::=&nbsp;ENUMERATED&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;FreeBSD,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;acquires&nbsp;value&nbsp;0
-&nbsp;&nbsp;&nbsp;&nbsp;Windows,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;acquires&nbsp;value&nbsp;1
-&nbsp;&nbsp;&nbsp;&nbsp;Solaris(5),&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;remains&nbsp;5
-&nbsp;&nbsp;&nbsp;&nbsp;Linux,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;becomes&nbsp;6
-&nbsp;&nbsp;&nbsp;&nbsp;MacOS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;becomes&nbsp;7
-}
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H2><A NAME="SECTION03114000000000000000">
-The OCTET STRING type</A>
-</H2>
-
-<P>
-This type models the sequence of 8-bit bytes. This may be used to
-transmit some opaque data or data serialized by other types of encoders
-(i.e. video file, photo picture, etc).
-
-<P>
-
-<H2><A NAME="SECTION03115000000000000000">
-The OBJECT IDENTIFIER type</A>
-</H2>
-
-<P>
-The OBJECT IDENTIFIER is used to represent the unique identifier of
-any object, starting from the very root of the registration tree.
-If your organization needs to uniquely identify something (a router,
-a room, a person, a standard, or whatever), you are encouraged to
-get your own identification subtree at <A HREF=http://www.iana.org/protocols/forms.htm>http://www.iana.org/protocols/forms.htm</A>.
-
-<P>
-For example, the very first ASN.1 module in this Chapter (RectangleModule1)
-has the following OBJECT IDENTIFIER: 1 3 6 1 4 1 9363 1 5 2 1 1.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-ExampleOID&nbsp;::=&nbsp;OBJECT&nbsp;IDENTIFIER
-&nbsp;
-rectangleModule1-oid&nbsp;ExampleOID
-&nbsp;&nbsp;::=&nbsp;{&nbsp;1&nbsp;3&nbsp;6&nbsp;1&nbsp;4&nbsp;1&nbsp;9363&nbsp;1&nbsp;5&nbsp;2&nbsp;1&nbsp;1&nbsp;}
-&nbsp;
---&nbsp;An&nbsp;identifier&nbsp;of&nbsp;the&nbsp;Internet.
-internet-id&nbsp;OBJECT&nbsp;IDENTIFIER
-&nbsp;&nbsp;::=&nbsp;{&nbsp;iso(1)&nbsp;identified-organization(3)
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dod(6)&nbsp;internet(1)&nbsp;}
-</PRE>
-</BLOCKQUOTE>
-As you see, names are optional.
-
-<P>
-
-<H2><A NAME="SECTION03116000000000000000">
-The RELATIVE-OID type</A>
-</H2>
-
-<P>
-The RELATIVE-OID type has the semantics of a subtree of an OBJECT
-IDENTIFIER. There may be no need to repeat the whole sequence of numbers
-from the root of the registration tree where the only thing of interest
-is some of the tree's subsequence.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-this-document&nbsp;RELATIVE-OID&nbsp;::=&nbsp;{&nbsp;docs(2)&nbsp;usage(1)&nbsp;}
-&nbsp;
-this-example&nbsp;RELATIVE-OID&nbsp;::=&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;this-document&nbsp;assorted-examples(0)&nbsp;this-example(1)&nbsp;}
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H1><A NAME="SECTION03120000000000000000">
-Some of the ASN.1 String Types</A>
-</H1>
-
-<P>
-
-<H2><A NAME="SECTION03121000000000000000">
-The IA5String type</A>
-</H2>
-
-<P>
-This is essentially the ASCII, with 128 character codes available
-(7 lower bits of an 8-bit byte).
-
-<P>
-
-<H2><A NAME="SECTION03122000000000000000">
-The UTF8String type</A>
-</H2>
-
-<P>
-This is the character string which encodes the full Unicode range
-(4 bytes) using multibyte character sequences.
-
-<P>
-
-<H2><A NAME="SECTION03123000000000000000">
-The NumericString type</A>
-</H2>
-
-<P>
-This type represents the character string with the alphabet consisting
-of numbers (''0'' to ''9'') and a space.
-
-<P>
-
-<H2><A NAME="SECTION03124000000000000000">
-The PrintableString type</A>
-</H2>
-
-<P>
-The character string with the following alphabet: space, ''<B>'</B>''
-(single quote), ''<B>(</B>'', ''<B>)</B>'', ''<B>+</B>'',
-''<B>,</B>'' (comma), ''<B>-</B>'', ''<B>.</B>'', ''<B>/</B>'',
-digits (''0'' to ''9''), ''<B>:</B>'', ''<B>=</B>'', ''<B>?</B>'',
-upper-case and lower-case letters (''A'' to ''Z'' and ''a''
-to ''z'').
-
-<P>
-
-<H2><A NAME="SECTION03125000000000000000">
-The VisibleString type</A>
-</H2>
-
-<P>
-The character string with the alphabet which is more or less a subset
-of ASCII between the space and the ''<B>~</B>''
-symbol (tilde).
-
-<P>
-Alternatively, the alphabet may be described as the PrintableString
-alphabet presented earlier, plus the following characters: ''<B>!</B>'',
-''<B>''</B>'', ''<B>#</B>'', ''<B>$</B>'', ''<B>%</B>'',
-''<B>&amp;</B>'', ''<B>*</B>'', ''<B>;</B>'', ''<B>&lt;</B>'',
-''<B>&gt;</B>'', ''<B>[</B>'', ''<B>&#92;</B>'',
-''<B>]</B>'', ''<B>&#94;</B>'', ''<B>_</B>'',
-''<B>`</B>'' (single left quote), ''<B>{</B>'', ''<B>|</B>'',
-''<B>}</B>'', ''<B>~</B>''.
-
-<P>
-
-<H1><A NAME="SECTION03130000000000000000">
-ASN.1 Constructed Types</A>
-</H1>
-
-<P>
-
-<H2><A NAME="SECTION03131000000000000000">
-The SEQUENCE type</A>
-</H2>
-
-<P>
-This is an ordered collection of other simple or constructed types.
-The SEQUENCE constructed type resembles the C ''struct'' statement.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-Address&nbsp;::=&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;The&nbsp;apartment&nbsp;number&nbsp;may&nbsp;be&nbsp;omitted
-&nbsp;&nbsp;&nbsp;&nbsp;apartmentNumber&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NumericString&nbsp;OPTIONAL,
-&nbsp;&nbsp;&nbsp;&nbsp;streetName&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PrintableString,
-&nbsp;&nbsp;&nbsp;&nbsp;cityName&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PrintableString,
-&nbsp;&nbsp;&nbsp;&nbsp;stateName&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;PrintableString,
-&nbsp;&nbsp;&nbsp;&nbsp;--&nbsp;This&nbsp;one&nbsp;may&nbsp;be&nbsp;omitted&nbsp;too
-&nbsp;&nbsp;&nbsp;&nbsp;zipNo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;NumericString&nbsp;OPTIONAL
-}
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H2><A NAME="SECTION03132000000000000000">
-The SET type</A>
-</H2>
-
-<P>
-This is a collection of other simple or constructed types. Ordering
-is not important. The data may arrive in the order which is different
-from the order of specification. Data is encoded in the order not
-necessarily corresponding to the order of specification.
-
-<P>
-
-<H2><A NAME="SECTION03133000000000000000">
-The CHOICE type</A>
-</H2>
-
-<P>
-This type is just a choice between the subtypes specified in it. The
-CHOICE type contains at most one of the subtypes specified, and it
-is always implicitly known which choice is being decoded or encoded.
-This one resembles the C ''union'' statement.
-
-<P>
-The following type defines a response code, which may be either an
-integer code or a boolean ''true''/''false'' code.
-
-<P>
-
-<BLOCKQUOTE><PRE>
-ResponseCode&nbsp;::=&nbsp;CHOICE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;intCode&nbsp;&nbsp;&nbsp;&nbsp;INTEGER,
-&nbsp;&nbsp;&nbsp;&nbsp;boolCode&nbsp;&nbsp;&nbsp;BOOLEAN
-}
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H2><A NAME="SECTION03134000000000000000">
-The SEQUENCE OF type</A>
-</H2>
-
-<P>
-This one is the list (array) of simple or constructed types:
-
-<P>
-
-<BLOCKQUOTE><PRE>
---&nbsp;Example&nbsp;1
-ManyIntegers&nbsp;::=&nbsp;SEQUENCE&nbsp;OF&nbsp;INTEGER
-&nbsp;
---&nbsp;Example&nbsp;2
-ManyRectangles&nbsp;::=&nbsp;SEQUENCE&nbsp;OF&nbsp;Rectangle
-&nbsp;
---&nbsp;More&nbsp;complex&nbsp;example:
---&nbsp;an&nbsp;array&nbsp;of&nbsp;structures&nbsp;defined&nbsp;in&nbsp;place.
-ManyCircles&nbsp;::=&nbsp;SEQUENCE&nbsp;OF&nbsp;SEQUENCE&nbsp;{
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;radius&nbsp;INTEGER
-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}
-</PRE>
-</BLOCKQUOTE>
-
-<P>
-
-<H2><A NAME="SECTION03135000000000000000">
-The SET OF type</A>
-</H2>
-
-<P>
-The SET OF type models the bag of structures. It resembles the SEQUENCE
-OF type, but the order is not important: i.e. the elements may arrive
-in the order which is not necessarily the same as the in-memory order
-on the remote machines.
-
-<P>
-
-<BLOCKQUOTE><PRE>
---&nbsp;A&nbsp;set&nbsp;of&nbsp;structures&nbsp;defined&nbsp;elsewhere
-SetOfApples&nbsp;::&nbsp;SET&nbsp;OF&nbsp;Apple
-&nbsp;
---&nbsp;Set&nbsp;of&nbsp;integers&nbsp;encoding&nbsp;the&nbsp;kind&nbsp;of&nbsp;a&nbsp;fruit
-FruitBag&nbsp;::=&nbsp;SET&nbsp;OF&nbsp;ENUMERATED&nbsp;{&nbsp;apple,&nbsp;orange&nbsp;}
-</PRE>
-</BLOCKQUOTE>
- 
-<H2><A NAME="SECTION04000000000000000000">
-Bibliography</A>
-</H2><DL COMPACT><DD><P></P><DT><A NAME="ASN1C">ASN1C</A>
-<DD>The Open Source ASN.1 Compiler. <A HREF=http://lionet.info/asn1c>http://lionet.info/asn1c</A>
-<P></P><DT><A NAME="AONL">AONL</A>
-<DD>Online ASN.1 Compiler. <A HREF=http://lionet.info/asn1c/asn1c.cgi>http://lionet.info/asn1c/asn1c.cgi</A>
-<P></P><DT><A NAME="Dub00">Dub00</A>
-<DD>Olivier Dubuisson -- <I>ASN.1 Communication between heterogeneous
-systems</I> -- Morgan Kaufmann Publishers, 2000. <A HREF=http://asn1.elibel.tm.fr/en/book/>http://asn1.elibel.tm.fr/en/book/</A>.
-ISBN:0-12-6333361-0.
-<P></P><DT><A NAME="ITU-T_ASN.1">ITU-T/ASN.1</A>
-<DD>ITU-T Study Group 17 - Languages for Telecommunication Systems <A HREF=http://www.itu.int/ITU-T/studygroups/com17/languages/>http://www.itu.int/ITU-T/studygroups/com17/languages/</A>
-</DL>
-
-<P>
-<BR><HR><H4>Footnotes</H4>
-<DL>
-<DT><A NAME="foot843">... given</A><A
- HREF="asn1c-usage.html#tex2html1"><SUP>1.1</SUP></A></DT>
-<DD>Please look into Part par:ASN.1-Basics for a quick reference
-on how to understand the ASN.1 notation.
-
-</DD>
-<DT><A NAME="foot844">... type</A><A
- HREF="asn1c-usage.html#tex2html2"><SUP>1.2</SUP></A></DT>
-<DD><I>-fnative-types</I> compiler option is used to produce basic C <I>int</I>
-types instead of infinite width INTEGER_t structures. See <A HREF=#Table1>Table 1</A>.
-
-</DD>
-<DT><A NAME="foot845">...asn1c</A><A
- HREF="asn1c-usage.html#tex2html3"><SUP>1.3</SUP></A></DT>
-<DD>The 1 symbol in asn<B>1</B>c is a digit, not an ''ell'' letter.
-
-</DD>
-<DT><A NAME="foot846">... module</A><A
- HREF="asn1c-usage.html#tex2html4"><SUP>1.4</SUP></A></DT>
-<DD>This is probably <B>not</B> what you want to try out right now -
-read through the rest of this chapter and check the <A HREF=#Table1>Table 1</A>
-to find out about <B>-P</B> and <B>-R</B> options.
-
-</DD>
-<DT><A NAME="foot181">...restartable</A><A
- HREF="asn1c-usage.html#tex2html6"><SUP>2.1</SUP></A></DT>
-<DD>Restartable means that if the decoder encounters the end of the buffer,
-it will fail, but may later be invoked again with the rest of the
-buffer to continue decoding.
-
-</DD>
-<DT><A NAME="foot250">... encoding</A><A
- HREF="asn1c-usage.html#tex2html7"><SUP>2.2</SUP></A></DT>
-<DD>It is actually faster too: the encoder might skip over some computations
-which aren't important for the size determination.
-
-</DD>
-<DT><A NAME="foot923">... type</A><A
- HREF="asn1c-usage.html#tex2html8"><SUP>4.1</SUP></A></DT>
-<DD>Placing the constraint checking code <I>before</I> encoding helps
-to make sure you know the data is correct and within constraints before
-sharing the data with anyone else.
-
-<P>
-Placing the constraint checking code <I>after</I> decoding, but before
-any further action depending on the decoded data, helps to make sure
-the application got the valid contents before making use of it.
-
-</DD>
-</DL><BR><HR>
-<ADDRESS>
-Lev Walkin
-2005-03-04
-</ADDRESS>
-</BODY>
-</HTML>
diff --git a/doc/docsrc/Makefile.am b/doc/docsrc/Makefile.am
new file mode 100644
index 0000000..1fe2419
--- /dev/null
+++ b/doc/docsrc/Makefile.am
@@ -0,0 +1,10 @@
+
+regen:
+	pdflatex --output-format=dvi asn1c-usage
+	pdflatex --output-format=dvi asn1c-usage
+	pdflatex --output-format=dvi asn1c-usage
+	dvipdf asn1c-usage
+
+EXTRA_DIST = $(srcdir)/*.tex
+
+CLEANFILES = *.*~ *.aux *.dvi *.log *.out *.toc
diff --git a/doc/docsrc/Makefile.in b/doc/docsrc/Makefile.in
new file mode 100644
index 0000000..1a42eed
--- /dev/null
+++ b/doc/docsrc/Makefile.in
@@ -0,0 +1,340 @@
+# Makefile.in generated by automake 1.10 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
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+host_triplet = @host@
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+am__aclocal_m4_deps = $(top_srcdir)/m4/libtool.m4 \
+	$(top_srcdir)/m4/ltoptions.m4 $(top_srcdir)/m4/ltsugar.m4 \
+	$(top_srcdir)/m4/ltversion.m4 $(top_srcdir)/m4/lt~obsolete.m4 \
+	$(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+SOURCES =
+DIST_SOURCES =
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+ACLOCAL = @ACLOCAL@
+ADD_CFLAGS = @ADD_CFLAGS@
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+EXTRA_DIST = $(srcdir)/*.tex
+CLEANFILES = *.*~ *.aux *.dvi *.log *.out *.toc
+all: all-am
+
+.SUFFIXES:
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign  doc/docsrc/Makefile'; \
+	cd $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign  doc/docsrc/Makefile
+.PRECIOUS: 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__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
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+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
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+	-rm -rf .libs _libs
+tags: TAGS
+TAGS:
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+ctags: CTAGS
+CTAGS:
+
+
+distdir: $(DISTFILES)
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+	list='$(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 \
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+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \
+	    fi; \
+	    cp -pR $$d/$$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
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+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
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+maintainer-clean-generic:
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+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
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+clean-am: clean-generic clean-libtool mostlyclean-am
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+distclean: distclean-am
+	-rm -f Makefile
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+info: info-am
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+install-data-am:
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+install-dvi: install-dvi-am
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+install-exec-am:
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+install-html: install-html-am
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+install-info: install-info-am
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+install-pdf: install-pdf-am
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+install-ps: install-ps-am
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+installcheck-am:
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+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
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+pdf: pdf-am
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+ps-am:
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+uninstall-am:
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+	distclean distclean-generic distclean-libtool 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-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am uninstall uninstall-am
+
+
+regen:
+	pdflatex --output-format=dvi asn1c-usage
+	pdflatex --output-format=dvi asn1c-usage
+	pdflatex --output-format=dvi asn1c-usage
+	dvipdf asn1c-usage
+# 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/doc/asn1c-usage.tex b/doc/docsrc/asn1c-usage.tex
similarity index 100%
rename from doc/asn1c-usage.tex
rename to doc/docsrc/asn1c-usage.tex