epm install: add warning when install non ALT packages

bin/epm-install

@@ -328,13 +328,16 @@ epm_install_files()
     case "$BASEDISTRNAME" in
         "alt")
 
+            # on ALT install target can be a real path
             # do not use low-level for install by file path (f.i. epm install /usr/bin/git)
             if __epm_if_command_path $files ; then
                 epm_install_names $files
                 return
             fi
 
-            # on ALT install target can be a real path
+            __epm_print_warning_for_nonalt_packages $files
+
+            # do repack if needed
             if __epm_repack_if_needed $files ; then
                 [ -n "$repacked_pkgs" ] || fatal "Can't convert $files"
                 files="$repacked_pkgs"

bin/epm-sh-install

@@ -115,6 +115,27 @@ __epm_get_pkgvendor()
 
     epm print field Vendor for "$pkg" 2>/dev/null
 }
+
+__epm_print_warning_for_nonalt_packages()
+{
+    # only ALT
+    [ "$BASEDISTRNAME" = "alt" ] || return 0
+
+    local i
+    for i in $* ; do
+        local vendor
+        # TODO: check only for rpm
+        vendor="$(__epm_get_pkgvendor "$i")"
+
+        local packager="$(epm print field Packager for "$i" 2>/dev/null)"
+
+        # TODO: check GPG or some other mark
+        echo "$packager" | grep -q "@altlinux" && [ "$vendor" = "ALT Linux Team" ] && return 0
+
+        warning "%%% You are trying install package $i not from ALT repository. Be careful! %%%"
+    done
+}
+
 # Args: package names. Set noscripts for outside packages.
 __epm_check_vendor()
 {