# -*- sh -*-
# Build script to construct a full distribution directory of PuTTY.

module putty

# Start by figuring out what our version information looks like.
#
# There are four classes of PuTTY build:
#  - a release, which just has an X.YY version number
#  - a prerelease, which has an X.YY version number, plus a date and
#    version control commit id (and is considered to be 'almost'
#    version X.YY)
#  - a development snapshot, which just has a date and commit id
#  - a custom build, which also has a date and commit id (but is
#    labelled differently, to stress that development snapshots are
#    built from the checked-in code by the automated nightly script
#    whereas custom builds are made manually, perhaps from uncommitted
#    changes, e.g. to send to a user for diagnostic or testing
#    purposes).
#
# The four classes of build are triggered by invoking bob with
# different command-line variable definitions:
#
#  - RELEASE=X.YY makes a release build
#  - PRERELEASE=X.YY makes a prerelease build (combined with the build
#    date and VCS info)
#  - setting SNAPSHOT to any non-empty string makes a development
#    snapshot
#  - setting none of these makes a custom build.

# If we need a date for our build, start by computing it in the
# various forms we need. $(Ndate) is the date in purely numeric form
# (YYYYMMDD); $(Date) is separated as YYYY-MM-DD; $(Days) is the
# number of days since the epoch.
ifeq "$(RELEASE)" "" set Ndate $(!builddate)
ifneq "$(Ndate)" "" in . do echo $(Ndate) | perl -pe 's/(....)(..)(..)/$$1-$$2-$$3/' > date
ifneq "$(Ndate)" "" read Date date
set Epoch 18293 # update this at every release
ifneq "$(Ndate)" "" in . do echo $(Ndate) | perl -ne 'use Time::Local; /(....)(..)(..)/ and print timegm(0,0,0,$$3,$$2-1,$$1) / 86400 - $(Epoch)' > days
ifneq "$(Ndate)" "" read Days days

# For any non-release, we're going to need the number of the prior
# release, for putting in various places so as to get monotonic
# comparisons with the surrounding actual releases.
ifeq "$(RELEASE)" "" read Lastver putty/LATEST.VER

# Set up the textual version strings for the docs build and installers.
# We have one of these including the word 'PuTTY', and one without,
# which are inconveniently capitalised differently.
ifneq "$(RELEASE)" "" set Puttytextver PuTTY release $(RELEASE)
ifneq "$(RELEASE)" "" set Textver Release $(RELEASE)
ifneq "$(PRERELEASE)" "" set Puttytextver PuTTY pre-release $(PRERELEASE):$(Date).$(vcsid)
ifneq "$(PRERELEASE)" "" set Textver Pre-release $(PRERELEASE):$(Date).$(vcsid)
ifneq "$(SNAPSHOT)" "" set Puttytextver PuTTY development snapshot $(Date).$(vcsid)
ifneq "$(SNAPSHOT)" "" set Textver Development snapshot $(Date).$(vcsid)
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Puttytextver PuTTY custom build $(Date).$(vcsid)
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Textver Custom build $(Date).$(vcsid)
in putty/doc do echo "\\\\versionid $(Puttytextver)" > version.but

# Set up the version string for use in the SSH connection greeting.
#
# We use $(Ndate) rather than $(Date) in the pre-release string to
# make sure it's under 40 characters, which is a hard limit in the SSH
# protocol spec (and enforced by a compile-time assertion in
# version.c).
ifneq "$(RELEASE)" "" set Sshver -Release-$(RELEASE)
ifneq "$(PRERELEASE)" "" set Sshver -Prerelease-$(PRERELEASE):$(Ndate).$(vcsid)
ifneq "$(SNAPSHOT)" "" set Sshver -Snapshot-$(Date).$(vcsid)
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Sshver -Custom-$(Date).$(vcsid)

# Set up the filename suffix for the Unix source archive.
ifneq "$(RELEASE)" "" set Uxarcsuffix -$(RELEASE)
ifneq "$(PRERELEASE)" "" set Uxarcsuffix -$(PRERELEASE)~pre$(Ndate).$(vcsid)
ifneq "$(SNAPSHOT)" "" set Uxarcsuffix -$(Lastver)-$(Date).$(vcsid)
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Uxarcsuffix -custom-$(Date).$(vcsid)

# Set up the filenames for the Windows installers (minus extension,
# which goes on later).
ifneq "$(RELEASE)" "" set Isuffix $(RELEASE)-installer
ifneq "$(PRERELEASE)" "" set Isuffix $(PRERELEASE)-pre$(Ndate)-installer
ifneq "$(SNAPSHOT)" "" set Isuffix $(Date)-installer
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" set Isuffix custom-$(Date)-installer
set Ifilename32 putty-$(Isuffix)
set Ifilename64 putty-64bit-$(Isuffix)
set Ifilenamea32 putty-arm32-$(Isuffix)
set Ifilenamea64 putty-arm64-$(Isuffix)

# Set up the Windows version resource info, for both the installers and
# the individual programs. This must be a sequence of four 16-bit
# integers compared lexicographically, and we define it as follows:
#
#   For release X.YY:                             X.YY.0.0
#   For a prerelease before the X.YY release:     (X.YY-1).(DDDDD + 0x8000).0
#   For a devel snapshot after the X.YY release:  X.YY.DDDDD.0
#   For a custom build:                           X.YY.DDDDD.1
#
# where DDDDD is a representation of the build date, in the form of a
# number of days since an epoch date. The epoch is reset at every
# release (which, with 15 bits, gives us a comfortable 80-odd years
# before it becomes vital to make another release to reset the count
# :-).

ifneq "$(RELEASE)" "" in . do echo $(RELEASE).0.0 > winver
ifneq "$(PRERELEASE)" "" in . do perl -e 'printf "%s.%d.0", $$ARGV[0], 0x8000+$$ARGV[1]' $(Lastver) $(Days) > winver
ifneq "$(SNAPSHOT)" "" in . do perl -e 'printf "%s.%d.0", $$ARGV[0], $$ARGV[1]' $(Lastver) $(Days) > winver
ifeq "$(RELEASE)$(PRERELEASE)$(SNAPSHOT)" "" in . do perl -e 'printf "%s.%d.1", $$ARGV[0], $$ARGV[1]' $(Lastver) $(Days) > winver
in . do perl -pe 'y!.!,!' winver > winvercommas
read Winver winver
read Winvercommas winvercommas

# Write out a version.h that contains the real version number.
in putty do echo '/* Generated by automated build script */' > version.h
ifneq "$(RELEASE)" "" in putty do echo '$#define RELEASE $(RELEASE)' >> version.h
ifneq "$(PRERELEASE)" "" in putty do echo '$#define PRERELEASE $(PRERELEASE)' >> version.h
ifneq "$(SNAPSHOT)" "" in putty do echo '$#define SNAPSHOT' >> version.h
in putty do echo '$#define TEXTVER "$(Textver)"' >> version.h
in putty do echo '$#define SSHVER "$(Sshver)"' >> version.h
in putty do echo '$#define BINARY_VERSION $(Winvercommas)' >> version.h

# In cmake/gitcommit.cmake, replace the default output "unavailable"
# with the commit string generated by bob, so that people rebuilding
# the source archive will still get a useful value.
in putty do sed -i '/set(DEFAULT_COMMIT/s/unavailable/$(vcsfullid)/' cmake/gitcommit.cmake

in . do mkdir docbuild
in docbuild do cmake ../putty/doc
in docbuild do make -j$(nproc) VERBOSE=1
in putty/doc do cp ../../docbuild/*.1 .
in putty/doc do cp ../../docbuild/puttydoc.txt .
in putty/doc do cp ../../docbuild/putty.chm .
in putty/doc do cp -r ../../docbuild/html .

in putty do ./mksrcarc.sh
in putty do ./mkunxarc.sh '$(Uxarcsuffix)'

delegate -
# Run the test suite, under self-delegation so that we don't leave any
# cruft lying around. This involves doing a build of the Unix tools
# (which is a useful double-check anyway to pick up any build failures)
in putty do cmake . -DCMAKE_C_COMPILER=clang -DCMAKE_C_FLAGS="-fsanitize=address -fsanitize=leak" -DSTRICT=ON
in putty do make -j$(nproc) VERBOSE=1
in putty do python3 test/cryptsuite.py
enddelegate

delegate -
# Also, test-build the Windows tools using MinGW. This is important if
# we want the MinGW build to carry on working, partly because of the
# chance of compiler compatibility issues, but mostly because MinGW's
# linker uses Unix-style library search semantics (once down the
# library list), and no other Windows toolchain we build with is that
# picky. So this ensures the Windows library structure continues to
# work in the most difficult circumstance we expect it to encounter.
in putty do cmake . -DCMAKE_TOOLCHAIN_FILE=cmake/toolchain-mingw.cmake -DSTRICT=ON
in putty do make -j$(nproc) VERBOSE=1
enddelegate

# Windowsify LICENCE, since it's going in the Windows installers.
in putty do perl -i~ -pe 'y/\015//d;s/$$/\015/' LICENCE

# Some gratuitous theming for the MSI installer UI.
in putty/icons do make -j$(nproc)
in putty do ./windows/make_install_images.sh

mkdir putty/windows/build32
mkdir putty/windows/build64
mkdir putty/windows/buildold
mkdir putty/windows/abuild32
mkdir putty/windows/abuild64

# Build the binaries to go in the installers, in both 32- and 64-bit
# flavours.
#
# For the 32-bit ones, we set a subsystem version of 5.01, which
# allows the resulting files to still run on Windows XP.
in putty/windows/build32 with cmake_at_least_3.20 do cmake ../.. -DCMAKE_TOOLCHAIN_FILE=$(cmake_toolchain_clangcl32) -DCMAKE_BUILD_TYPE=Release -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DPUTTY_LINK_MAPS=ON -DCMAKE_C_FLAGS_RELEASE="/MT /O2" -DPUTTY_SUBSYSTEM_VERSION=5.01 -DSTRICT=ON
in putty/windows/build32 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1
in putty/windows/build64 with cmake_at_least_3.20 do cmake ../.. -DCMAKE_TOOLCHAIN_FILE=$(cmake_toolchain_clangcl64) -DCMAKE_BUILD_TYPE=Release -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DPUTTY_LINK_MAPS=ON -DCMAKE_C_FLAGS_RELEASE="/MT /O2" -DSTRICT=ON
in putty/windows/build64 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1

# The cmake mechanism used to set the subsystem version is a bit of a
# bodge (it depends on knowing how cmake set up all its build command
# variables), so just in case it breaks in future, double-check we
# really did get the subsystem version we wanted.
in putty/windows/build32 do objdump -x putty.exe > exe-headers.txt
in putty/windows/build32 do grep -Ex 'MajorOSystemVersion[[:space:]]+5' exe-headers.txt
in putty/windows/build32 do grep -Ex 'MinorOSystemVersion[[:space:]]+1' exe-headers.txt
in putty/windows/build32 do grep -Ex 'MajorSubsystemVersion[[:space:]]+5' exe-headers.txt
in putty/windows/build32 do grep -Ex 'MinorSubsystemVersion[[:space:]]+1' exe-headers.txt

# Build experimental Arm Windows binaries.
in putty/windows/abuild32 with cmake_at_least_3.20 do cmake ../.. -DCMAKE_TOOLCHAIN_FILE=$(cmake_toolchain_clangcl_a32) -DCMAKE_BUILD_TYPE=Release -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DPUTTY_LINK_MAPS=ON -DCMAKE_C_FLAGS_RELEASE="/MT /O2" -DSTRICT=ON
in putty/windows/abuild32 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1
in putty/windows/abuild64 with cmake_at_least_3.20 do cmake ../.. -DCMAKE_TOOLCHAIN_FILE=$(cmake_toolchain_clangcl_a64) -DCMAKE_BUILD_TYPE=Release -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DPUTTY_LINK_MAPS=ON -DCMAKE_C_FLAGS_RELEASE="/MT /O2" -DSTRICT=ON
in putty/windows/abuild64 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1

# Make a list of the Windows binaries we're going to ship, so that we
# can sign them.
in putty/windows do for subdir in build32 abuild32 build64 abuild64; do sed "s!^!$$subdir/!" $$subdir/shipped.txt; done > to-sign.txt

# Code-sign the Windows binaries, if the local bob config provides a
# script to do so in a cross-compiling way. We assume here that the
# script accepts an -i option to provide a 'more info' URL, an
# optional -n option to provide a program name, and an -N option to
# take the program name from an .exe's version resource, and that it
# can accept multiple .exe or .msi filename arguments and sign them
# all in place.
ifneq "$(cross_winsigncode)" "" in putty/windows do $(cross_winsigncode) -N -i https://www.chiark.greenend.org.uk/~sgtatham/putty/ $$(cat to-sign.txt)

# Make a preliminary set of cryptographic checksums giving the hashes
# of these versions of the binaries. We'll make the rest below.
in putty do for hash in md5 sha1 sha256 sha512; do for dir_plat in "build32 w32" "build64 w64" "abuild32 wa32" "abuild64 wa64"; do set -- $$dir_plat; (cd windows/$$1 && $${hash}sum *.exe | sed 's!\( \+\)!\1'$$2'/!;s!$$! (installer version)!') >> $${hash}sums.installer; done; done

# Build a WiX MSI installer, for each build flavour.
in putty/windows with wixonlinux do candle -arch x86 -dRealPlatform=x86 -dDllOk=yes -dBuilddir=build32/ -dWinver="$(Winver)" -dPuttytextver="$(Puttytextver)" -dHelpFilePath="../../docbuild/putty.chm" installer.wxs && light -ext WixUIExtension -ext WixUtilExtension -sval installer.wixobj -o installer32.msi -spdb
in putty/windows with wixonlinux do candle -arch x64 -dRealPlatform=x64 -dDllOk=yes -dBuilddir=build64/ -dWinver="$(Winver)" -dPuttytextver="$(Puttytextver)" -dHelpFilePath="../../docbuild/putty.chm" installer.wxs && light -ext WixUIExtension -ext WixUtilExtension -sval installer.wixobj -o installer64.msi -spdb
in putty/windows with wixonlinux do candle -arch x64 -dRealPlatform=Arm -dDllOk=no -dBuilddir=abuild32/ -dWinver="$(Winver)" -dPuttytextver="$(Puttytextver)" -dHelpFilePath="../../docbuild/putty.chm" installer.wxs && light -ext WixUIExtension -ext WixUtilExtension -sval installer.wixobj -o installera32.msi -spdb
in putty/windows with wixonlinux do candle -arch x64 -dRealPlatform=Arm64 -dDllOk=no -dBuilddir=abuild64/ -dWinver="$(Winver)" -dPuttytextver="$(Puttytextver)" -dHelpFilePath="../../docbuild/putty.chm" installer.wxs && light -ext WixUIExtension -ext WixUtilExtension -sval installer.wixobj -o installera64.msi -spdb

# Change the width field for our dialog background image so that it
# doesn't stretch across the whole dialog. (WiX's default one does; we
# replace it with a narrow one so that the text to the right of it
# shows up on system default background colour, meaning that
# high-contrast mode doesn't make the text white on white. But that
# means we also have to modify the width field, and there's nothing in
# WiX's source syntax to make that happen.)
#
# Also bodge the platform fields for the Windows on Arm installers,
# since WiX 3 doesn't understand Arm platform names itself.
in putty/windows do ./msifixup.py installer32.msi --dialog-bmp-width=123
in putty/windows do ./msifixup.py installer64.msi --dialog-bmp-width=123
in putty/windows do ./msifixup.py installera32.msi --dialog-bmp-width=123 --platform=Arm
in putty/windows do ./msifixup.py installera64.msi --dialog-bmp-width=123 --platform=Arm64

# Sign the Windows installers.
ifneq "$(cross_winsigncode)" "" in putty/windows do $(cross_winsigncode) -i https://www.chiark.greenend.org.uk/~sgtatham/putty/ -n "PuTTY Installer" installer32.msi installer64.msi installera32.msi installera64.msi

# Build the standalone binaries, in both 32- and 64-bit flavours.
# These differ from the previous set in that they embed the help file.
in putty/windows/build32 with cmake_at_least_3.20 do cmake . -DPUTTY_EMBEDDED_CHM_FILE=$$(realpath ../../../docbuild/putty.chm)
in putty/windows/build32 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1
in putty/windows/build64 with cmake_at_least_3.20 do cmake . -DPUTTY_EMBEDDED_CHM_FILE=$$(realpath ../../../docbuild/putty.chm)
in putty/windows/build64 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1
in putty/windows/abuild32 with cmake_at_least_3.20 do cmake . -DPUTTY_EMBEDDED_CHM_FILE=$$(realpath ../../../docbuild/putty.chm)
in putty/windows/abuild32 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1
in putty/windows/abuild64 with cmake_at_least_3.20 do cmake . -DPUTTY_EMBEDDED_CHM_FILE=$$(realpath ../../../docbuild/putty.chm)
in putty/windows/abuild64 with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1

# Build the 'old' binaries, which should still run on all 32-bit
# versions of Windows back to Win95 (but not Win32s). These link
# against Visual Studio 2003 libraries (the more modern versions
# assume excessively modern Win32 API calls to be available), specify
# a subsystem version of 4.0, and compile with /arch:IA32 to prevent
# the use of modern CPU features like MMX which older machines also
# might not have.
#
# There's no installer to go with these, so they must also embed the
# help file.
in putty/windows/buildold with cmake_at_least_3.20 do cmake ../.. -DCMAKE_TOOLCHAIN_FILE=$(cmake_toolchain_clangcl32_2003) -DCMAKE_BUILD_TYPE=Release -DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded -DPUTTY_LINK_MAPS=ON -DSTRICT=ON
in putty/windows/buildold with cmake_at_least_3.20 do make -j$(nproc) VERBOSE=1

# Regenerate to-sign.txt with the 'old' binaries included.
in putty/windows do for subdir in build32 abuild32 build64 abuild64 buildold; do sed "s!^!$$subdir/!" $$subdir/shipped.txt; done > to-sign.txt

# Code-sign the standalone versions of the binaries.
ifneq "$(cross_winsigncode)" "" in putty/windows do $(cross_winsigncode) -N -i https://www.chiark.greenend.org.uk/~sgtatham/putty/ $$(cat to-sign.txt)

# Move the shipped (and signed) binaries into another directory to
# deliver them from, so that we omit testcrypt and its ilk.
in putty/windows do mkdir deliver
in putty/windows do for subdir in build32 abuild32 build64 abuild64 buildold; do mkdir deliver/$$subdir; done
in putty/windows do while read x; do mv $$x deliver/$$x; mv $$x.map deliver/$$x.map; done < to-sign.txt

in putty/windows/deliver/buildold do zip -k -j putty.zip `ls *.exe | grep -vxE '^(puttytel|pterm).exe'` ../../../docbuild/putty.chm
in putty/windows/deliver/build32 do zip -k -j putty.zip `ls *.exe | grep -vxE '^(puttytel|pterm).exe'` ../../../docbuild/putty.chm
in putty/windows/deliver/build64 do zip -k -j putty.zip `ls *.exe | grep -vxE '^(puttytel|pterm).exe'` ../../../docbuild/putty.chm
in putty/windows/deliver/abuild32 do zip -k -j putty.zip `ls *.exe | grep -vxE '^(puttytel|pterm).exe'` ../../../docbuild/putty.chm
in putty/windows/deliver/abuild64 do zip -k -j putty.zip `ls *.exe | grep -vxE '^(puttytel|pterm).exe'` ../../../docbuild/putty.chm
in docbuild/html do zip puttydoc.zip *.html

# Deliver the actual PuTTY release directory into a subdir `putty'.
deliver putty/windows/deliver/buildold/*.exe putty/w32old/$@
deliver putty/windows/deliver/buildold/putty.zip putty/w32old/$@
deliver putty/windows/deliver/build32/*.exe putty/w32/$@
deliver putty/windows/deliver/build32/putty.zip putty/w32/$@
deliver putty/windows/deliver/build64/*.exe putty/w64/$@
deliver putty/windows/deliver/build64/putty.zip putty/w64/$@
deliver putty/windows/installer32.msi putty/w32/$(Ifilename32).msi
deliver putty/windows/installer64.msi putty/w64/$(Ifilename64).msi
deliver putty/windows/installera32.msi putty/wa32/$(Ifilenamea32).msi
deliver putty/windows/installera64.msi putty/wa64/$(Ifilenamea64).msi
deliver putty/windows/deliver/abuild32/*.exe putty/wa32/$@
deliver putty/windows/deliver/abuild32/putty.zip putty/wa32/$@
deliver putty/windows/deliver/abuild64/*.exe putty/wa64/$@
deliver putty/windows/deliver/abuild64/putty.zip putty/wa64/$@
deliver docbuild/html/puttydoc.zip putty/$@
deliver docbuild/putty.chm putty/$@
deliver docbuild/puttydoc.txt putty/$@
deliver docbuild/html/*.html putty/htmldoc/$@
deliver putty/putty-src.zip putty/$@
deliver putty/*.tar.gz putty/$@

# Deliver the map files alongside the `proper' release deliverables.
deliver putty/windows/deliver/buildold/*.map maps/w32old/$@
deliver putty/windows/deliver/build32/*.map maps/w32/$@
deliver putty/windows/deliver/build64/*.map maps/w64/$@
deliver putty/windows/deliver/abuild32/*.map maps/wa32/$@
deliver putty/windows/deliver/abuild64/*.map maps/wa64/$@

# Deliver sign.sh, so that whoever has just built PuTTY (the
# snapshot scripts or me, depending) can conveniently sign it with
# whatever key they want.
deliver putty/sign.sh $@

# Create files of cryptographic checksums, which will be signed along
# with the files they verify. We've provided MD5 checksums for a
# while, but now MD5 is looking iffy, we're expanding our selection.
#
# Creating these files is most easily done in the destination
# directory, where all the files we're delivering are already in their
# final relative layout.
in . do pwd > builddir
read Builddir builddir
in-dest putty do a=`\find * -type f -print`; for hash in md5 sha1 sha256 sha512; do ($${hash}sum $$a; echo; cat $(Builddir)/putty/$${hash}sums.installer) > $${hash}sums; done

# And construct .htaccess files. One in the top-level directory,
# setting the MIME types for Windows help files and providing an
# appropriate link to the source archive:
in-dest putty do echo "AddType application/octet-stream .chm" >> .htaccess
in-dest putty do set -- putty*.tar.gz; for k in '' .gpg; do echo RedirectMatch temp '(.*/)'putty.tar.gz$$k\$$ '$$1'"$$1$$k" >> .htaccess; done
# And one in each binary directory, providing links for the installers.
in-dest putty do for params in "w32 putty-installer" "w64 putty-64bit-installer" "wa32 putty-arm32-installer" "wa64 putty-arm64-installer"; do (set -- $$params; subdir=$$1; installername=$$2; cd $$subdir && for ext in msi exe; do set -- putty*installer.$$ext; if test -f $$1; then for k in '' .gpg; do echo RedirectMatch temp '(.*/)'$${installername}.$$ext$$k\$$ '$$1'"$$1$$k" >> .htaccess; done; fi; done); done