Regenerate version files from RELEASE in a workflow

The version files were derived from RELEASE by a script kept outside this
repository, so bumping RELEASE and updating src/version.h, the spec version
and debian/changelog were separate manual steps.

Do it in a workflow triggered by a change to RELEASE. It writes the same
content the external script produced, verified byte for byte against the
current tree.

The build date is now minted once, when RELEASE changes, and stored in
version.h rather than taken from the clock of whichever build is running. The
package workflows read it from there, so rebuilding a commit produces the same
version string and the same package file names. Re-running the workflow
without a RELEASE change keeps the existing build date and makes no commit.

.github/workflows/build-rpm-arm64.yml

@@ -26,7 +26,9 @@ jobs:
       run: |
        pwd
        echo "RELEASE=$(cat RELEASE)" >> $GITHUB_ENV
-       echo "VERSION=$(date +%y%m%d%H%M%S)" >> $GITHUB_ENV
+       BUILDDATE=$(sed -n 's/^#define BUILDDATE "\(.*\)"$/\1/p' src/version.h)
+       [ -n "$BUILDDATE" ] || BUILDDATE=$(date +%y%m%d%H%M%S)
+       echo "VERSION=$BUILDDATE" >> $GITHUB_ENV
     - name: echo env
       run: echo "release $RELEASE version $VERSION"
     - name: Linux libraries

.github/workflows/build-rpm-armhf.yml

@@ -26,7 +26,9 @@ jobs:
       run: |
        pwd
        echo "RELEASE=$(cat RELEASE)" >> $GITHUB_ENV
-       echo "VERSION=$(date +%y%m%d%H%M%S)" >> $GITHUB_ENV
+       BUILDDATE=$(sed -n 's/^#define BUILDDATE "\(.*\)"$/\1/p' src/version.h)
+       [ -n "$BUILDDATE" ] || BUILDDATE=$(date +%y%m%d%H%M%S)
+       echo "VERSION=$BUILDDATE" >> $GITHUB_ENV
     - name: configure deb env
       run: |
        mkdir ~/debian

.github/workflows/build-rpm-x86-64.yml

@@ -26,7 +26,9 @@ jobs:
       run: |
        pwd
        echo "RELEASE=$(cat RELEASE)" >> $GITHUB_ENV
-       echo "VERSION=$(date +%y%m%d%H%M%S)" >> $GITHUB_ENV
+       BUILDDATE=$(sed -n 's/^#define BUILDDATE "\(.*\)"$/\1/p' src/version.h)
+       [ -n "$BUILDDATE" ] || BUILDDATE=$(date +%y%m%d%H%M%S)
+       echo "VERSION=$BUILDDATE" >> $GITHUB_ENV
     - name: echo env
       run: echo "release $RELEASE version $VERSION"
     - name: Linux libraries

.github/workflows/update-version.yml

@@ -0,0 +1,93 @@
+name: Update version files
+
+on:
+  push:
+    paths:
+      - RELEASE
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  version:
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v7
+
+    - name: Regenerate version files
+      run: |
+       RELEASE=$(tr -d ' \t\r\n' < RELEASE)
+       if [ -z "$RELEASE" ]; then echo "RELEASE is empty"; exit 1; fi
+       YEAR=$(date +%Y)
+       MAJOR=$(echo "$RELEASE" | cut -d . -f 1)
+       SUBMAJOR=$(echo "$RELEASE" | cut -d . -f 2)
+       MINOR=$(echo "$RELEASE" | cut -d . -f 3)
+       SUBMINOR=$(echo "$RELEASE" | cut -d . -f 4)
+       [ -n "$SUBMAJOR" ] || SUBMAJOR=0
+       [ -n "$MINOR" ] || MINOR=0
+       [ -n "$SUBMINOR" ] || SUBMINOR=0
+
+       # The build date is minted once per release and then carried in
+       # version.h, so that rebuilding the same commit yields the same
+       # version string and the same package names.
+       OLDRELEASE=$(sed -n 's/^#define VERSION "3proxy-\(.*\)"$/\1/p' src/version.h 2>/dev/null)
+       OLDBUILDDATE=$(sed -n 's/^#define BUILDDATE "\(.*\)"$/\1/p' src/version.h 2>/dev/null)
+       if [ "$OLDRELEASE" = "$RELEASE" ] && [ -n "$OLDBUILDDATE" ]; then
+         BUILDDATE="$OLDBUILDDATE"
+       else
+         BUILDDATE=$(date +%y%m%d%H%M%S)
+       fi
+       echo "release $RELEASE -> $MAJOR $SUBMAJOR $MINOR $SUBMINOR, build date $BUILDDATE"
+
+       DEBVERSION=$(head -1 debian/changelog | cut -d "(" -f 2 | cut -d ")" -f 1)
+       if [ "$DEBVERSION" != "$RELEASE-1" ]; then
+         mv debian/changelog debian/changelog.old
+         { echo "3proxy ($RELEASE-1) buster; urgency=medium"
+           echo ""
+           echo "  *3proxy $RELEASE initial build"
+           echo ""
+           echo " -- z3APA3A <3apa3a@3proxy.org>  $(date -R)"
+           echo ""
+           cat debian/changelog.old
+         } > debian/changelog
+         rm -f debian/changelog.old
+       fi
+
+       mv scripts/rh/3proxy.spec scripts/rh/3proxy.spec.old
+       { echo "Name:           3proxy"
+         echo "Version:        $RELEASE"
+         echo "Release:        1%{?dist}"
+         tail --lines=+4 scripts/rh/3proxy.spec.old
+       } > scripts/rh/3proxy.spec
+       rm -f scripts/rh/3proxy.spec.old
+
+       { echo "#ifndef VERSION"
+         echo "#define VERSION \"3proxy-$RELEASE\""
+         echo "#endif"
+         echo "#ifndef BUILDDATE"
+         echo "#define BUILDDATE \"$BUILDDATE\""
+         echo "#endif"
+         echo "#define MAJOR3PROXY $MAJOR"
+         echo "#define SUBMAJOR3PROXY $SUBMAJOR"
+         echo "#define MINOR3PROXY $MINOR"
+         echo "#define SUBMINOR3PROXY $SUBMINOR"
+         echo "#define RELEASE3PROXY \"3proxy-$RELEASE(\" BUILDDATE \")\\0\""
+         echo "#ifndef YEAR3PROXY"
+         echo "#define YEAR3PROXY \"$YEAR\""
+         echo "#endif"
+       } > src/version.h
+
+    - name: Commit
+      run: |
+       if [ -z "$(git status --porcelain debian/changelog scripts/rh/3proxy.spec src/version.h)" ]; then
+         echo "version files already up to date"
+         exit 0
+       fi
+       git config user.name "github-actions[bot]"
+       git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+       git add debian/changelog scripts/rh/3proxy.spec src/version.h
+       git commit -m "Update version files for $(tr -d ' \t\r\n' < RELEASE)"
+       git push