CONTRIB: make_srpm.sh can prepare SRPM with patches

Creating SRPM with patches is useful for some static analysers, which can do
two builds. The first time without patches and the second with patches.

Bash function add_patches is inspired by file rpm/add_patches.sh from project\
389-ds-base.
   commit 2a92a6cccd1002f4fe976ee7a5b79d779b009f87
   Author: Mark Reynolds
Thanks.

Resolves:
https://fedorahosted.org/sssd/ticket/2149

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

1 files changed, 54 insertions, 8 deletions

diff --git a/contrib/fedora/make_srpm.sh b/contrib/fedora/make_srpm.sh
index 41bc6fa7d..0e16617f0 100755
--- a/contrib/fedora/make_srpm.sh
+++ b/contrib/fedora/make_srpm.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 #    Authors:
 #        Lukas Slebodnik <lslebodn@redhat.com>
@@ -21,27 +21,70 @@
 PACKAGE_NAME="sssd"
 
 usage(){
-    echo "$(basename $0) [OPTIONS]"
-    echo "\t-p, --prerelease   Create prerelease SRPM"
-    echo "\t-d, --debug        Enable debugging."
-    echo "\t-c, --clean        Remove directory rpmbuild and exit."
-    echo "\t-h, --help         Print this help and exit."
-    echo "\t-?, --usage"
+    echo "$(basename $0) [OPTIONS] [-P|--patches <patch>...]"
+    echo -e "\t-p, --prerelease   Create prerelease SRPM"
+    echo -e "\t-d, --debug        Enable debugging."
+    echo -e "\t-c, --clean        Remove directory rpmbuild and exit."
+    echo -e "\t-P, --patches      Requires list of patches for SRPM."
+    echo -e "\t-h, --help         Print this help and exit."
+    echo -e "\t-?, --usage"
 
     exit 1
 }
 
+add_patches(){
+    spec_file=$1
+    shift
+    source_dir=$1
+    shift
+
+    patches=("${@}")
+
+    # These keep track of our spec file substitutions.
+    i=1
+    prefix="Source0:"
+    prepprefix="%setup"
+
+    # If no patches exist, just exit.
+    if [ -z "$patches" ]; then
+        echo Creating SRPM without extra patches.
+        return 0
+    fi
+
+    # Add the patches to the specfile.
+    for p in "${patches[@]}"; do
+        cp "$p" "$source_dir"
+        p=$(basename $p)
+        echo "Adding patch to spec file - $p"
+        sed -i -e "/${prefix}/a Patch${i}: ${p}" \
+               -e "/$prepprefix/a %patch${i} -p1" \
+               "$spec_file"
+
+        prefix="Patch${i}:"
+        prepprefix="%patch${i}"
+        i=$(($i+1))
+    done
+}
+
 for i in "$@"
 do
 case $i in
     -p|--prerelease)
     PRERELEASE=1
+    shift
     ;;
     -d|--debug)
     set -x
+    shift
     ;;
     -c|--clean)
     CLEAN=1
+    shift
+    ;;
+    -P|--patches)
+    shift
+    patches=("$@")
+    break
     ;;
     -h|--help|-\?|--usage)
     usage
@@ -113,7 +156,10 @@ git archive --format=tar.gz --prefix="$NAME"/ \
             --remote="file://$SRC_DIR" \
             HEAD
 
-cp "$SRC_DIR"/contrib/*.patch "$RPMBUILD/SOURCES"
+cp "$SRC_DIR"/contrib/*.patch "$RPMBUILD/SOURCES" 2>/dev/null
+add_patches "$RPMBUILD/SPECS/$PACKAGE_NAME.spec" \
+            "$RPMBUILD/SOURCES" \
+            "${patches[@]}"
 
 cd $RPMBUILD
 rpmbuild --define "_topdir $RPMBUILD" \