Validation: revert r365 and do it properly.

The implementation of r365 has some major problem,
deleting the permanent log being the most user-visible.
Undo that crud and do the checks in a proper way.

Signed-off-by: Mauro Giachero <mauro.giachero@gmail.com>

src/usr/bin/sbopkg

@@ -52,18 +52,17 @@ crunch() {
     # the inspiration for this and the next function comes from the crunch()
     # in installpkg. Both take one argument - the first reduces runs of spaces
     # to one and the second does that and reformats to 78 columns.
-    echo "$@" | tr -s ' '
+    echo -e "$@" | tr -s ' '
 }
 
 crunch_fmt() {
-    echo "$@" | tr -s ' ' | fmt -78
+    echo -e "$@" | tr -s ' ' | fmt -78
 }
 
 config_check () {
     # Check if config file is there and if so check that it has all
     # needed variables with any value, and set them.
-    local MISSING CANTCREATE
-    local VARNAME VARDIR VARVALUE
+    local MISSING VAR
 
     if [ ! -e $SBOPKG_CONF ]; then
         echo "$SCRIPT: No $SBOPKG_CONF file was found."
@@ -94,41 +93,6 @@ config_check () {
             echo "Please correct this error and run $SCRIPT again."
             exit 1
         fi
-
-        # Verify that the files/folders specified exist or can be created
-        # This is done only if the user is root, since there's little a
-        # non-root user can do with these anyway.
-        if has_root; then
-            for VAR in SRCDIR/ TMP/ OUTPUT/ LOGFILE; do
-                eval VARVALUE=\$$VAR
-                VARNAME=${VARVALUE##*/}
-                if [[ -z "$VARNAME" ]]; then
-                    VARNAME="sbopkg-testfile"
-                fi
-                VARDIR=$(echo $VARVALUE |rev |cut -d/ -f2- |rev)
-                if [[ ! -e $VARDIR ]]; then
-                    mkdir -p $VARDIR || CANTCREATE+="$VARVALUE "
-                fi
-                if [[ -d $VARDIR ]]; then
-                    (touch $VARDIR/$VARNAME && rm -f $VARDIR/$VARNAME) \
-                        || CANTCREATE+="$VARVALUE "
-                fi
-            done
-        fi
-        if [ "$CANTCREATE" ]; then
-            echo
-            echo "ERROR"
-            echo "$SCRIPT: Can't create the file(s)/folder(s):"
-            echo "$CANTCREATE"
-            echo
-            echo "Make sure you have enough privileges to create and"
-            echo "access these, or change the problematic settings in"
-            echo "the sbopkg.conf file."
-            echo "See the sbopkg.conf(5) man page for more details."
-            echo
-            echo "Please correct this error and run $SCRIPT again."
-            exit 1
-        fi
         if [ -e $HOME/.sbopkg.conf ]; then
             . $HOME/.sbopkg.conf
         fi
@@ -138,22 +102,48 @@ config_check () {
 ck_dir() {
     # This function displays the directory-creation message and then creates
     # the missing directory.
+    local ERROR=0
+
+    # Try to create the specified folder
     if [ ! -d "$1" ]; then
         echo
         crunch_fmt "$2"
         echo
         read -n1 -sep "Press any key to continue or Ctrl-C to exit."
-        # One of these days, I'll see about implementing a cleaner way of
-        # exiting with a nice error message if the user does not have
-        # sufficient permissions to create these directories.  For now,
-        # the || exit 1 will suffice.
-        mkdir -p $1 || exit 1
+        mkdir -p $1 || ERROR=1
     fi
+
+    # Try to create a file in the specified folder
+    if [[ $ERROR -eq 0 ]]; then
+        (touch $1/sbopkg-testfile && rm -f $1/sbopkg-testfile) || ERROR=2
+    fi
+
+    case $ERROR in
+        1)  crunch_fmt "\\n\\nWARNING:\
+                \\n$SCRIPT: Unable to create $1.\
+                \\n\\nMake sure you have enough privileges to create that\
+                directory, or specify a different location in sbopkg.conf.\
+                \\nSee the sbopkg.conf(5) man page for more details.\
+                \\n\\nHit ENTER to continue anyway, CTRL-C to abort."
+            read JUNK
+            ;;
+        2)  crunch_fmt "\\n\\nWARNING:\
+                \\n$SCRIPT: Unable to create files in $1.\
+                \\n\\nMake sure you have enough privileges to write in\
+                that directory, or specify a different location in\
+                sbopkg.conf.\
+                \\nSee the sbopkg.conf(5) man page for more details.\
+                \\n\\nHit ENTER to continue anyway, CTRL-C to abort."
+            read JUNK
+            ;;
+    esac
 }
 
 directory_checks () {
     # Check and make sure certain sbopkg-related directories exist.
     # If not, create them.
+    local LOGDIR=$(dirname $LOGFILE)
+
     ck_dir "$LOCALREPO/$SLACKVER" \
         "Creating local repository directory $LOCALREPO/$SLACKVER for the \
             rsync mirror."
@@ -163,6 +153,8 @@ directory_checks () {
         "Creating local TMP directory $TMP."
     ck_dir "$OUTPUT" \
         "Creating local package output directory $OUTPUT."
+    ck_dir "$LOGDIR" \
+        "Creating log directory $LOGDIR."
 
     # FIXME: This can probably be removed, but leave as-is for a bit.
     #cd $LOCALREPO