[Bug 1700472] [NEW] resolvconf cause nss_ldap connection failures while booting

[Tobias Mark]

Public bug reported:

Ubuntu 16.04.2 LTS
resolvconf:      1.78ubuntu4


If the server is configured to use a remote ldap during boot a bunch of this messages appears:

  sh nss_ldap: could not connect to any LDAP server as [..] - Can't
contact LDAP server

This appears to be cause by  /sbin/resolvconf:

        case "$IFACE" in
          */*) report_iface_err "Slash" ; exit 1 ;;
          *" "*) report_iface_err "Space" ; exit 1 ;;
          .*) report_iface_err "Initial dot" ; exit 1 ;;
          -*) report_iface_err "Initial hyphen" ; exit 1 ;;
          ~*) report_iface_err "Initial tilde" ; exit 1 ;;
        esac

Proposed patch:
-          ~*) report_iface_err "Initial tilde" ; exit 1 ;;
+          "~"*) report_iface_err "Initial tilde" ; exit 1 ;;

The shell will try to expand ~* to the home directory of user '*'. This
is probably not intended and cause the error because during ifup the
ldap can't be reached.

** Affects: resolvconf (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1700472

Title:
  resolvconf cause nss_ldap connection failures while booting

Status in resolvconf package in Ubuntu:
  New

Bug description:
  Ubuntu 16.04.2 LTS
  resolvconf:      1.78ubuntu4

  
  If the server is configured to use a remote ldap during boot a bunch of this messages appears:

    sh nss_ldap: could not connect to any LDAP server as [..] - Can't
  contact LDAP server

  This appears to be cause by  /sbin/resolvconf:

          case "$IFACE" in
            */*) report_iface_err "Slash" ; exit 1 ;;
            *" "*) report_iface_err "Space" ; exit 1 ;;
            .*) report_iface_err "Initial dot" ; exit 1 ;;
            -*) report_iface_err "Initial hyphen" ; exit 1 ;;
            ~*) report_iface_err "Initial tilde" ; exit 1 ;;
          esac

  Proposed patch:
  -          ~*) report_iface_err "Initial tilde" ; exit 1 ;;
  +          "~"*) report_iface_err "Initial tilde" ; exit 1 ;;

  The shell will try to expand ~* to the home directory of user '*'.
  This is probably not intended and cause the error because during ifup
  the ldap can't be reached.

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