You have to do the bounds check before the access.

[apt.git] / debian / apt.postinst

diff --git a/debian/apt.postinst b/debian/apt.postinst
old mode 100644 (file)
new mode 100755 (executable)
index fd3e273..1f98fce
--- a/debian/apt.postinst
+++ b/debian/apt.postinst
@@ -15,6 +15,19 @@ set -e
 
 case "$1" in
     configure)
 
 case "$1" in
     configure)

+       if dpkg --compare-versions "$2" lt 1.1~exp4; then
+           # apt-key before 0.9.10 could leave empty keyrings around
+           find /etc/apt/trusted.gpg.d/ -name '*.gpg' | while read keyring; do
+               if ! test -s "$keyring"; then
+                   rm -f "$keyring"
+               fi
+           done
+           # apt-key before 0.9.8.2 could create 0600 trusted.gpg file
+           if test -e /etc/apt/trusted.gpg ; then
+               chmod -f 0644 /etc/apt/trusted.gpg || true
+           fi
+       fi
+

        if dpkg --compare-versions "$2" lt-nl 0.9.9.5; then
            # we are using tmpfiles for both
            rm -f /etc/apt/trustdb.gpg
        if dpkg --compare-versions "$2" lt-nl 0.9.9.5; then
            # we are using tmpfiles for both
            rm -f /etc/apt/trustdb.gpg


@@ -26,6 +39,21 @@ case "$1" in
            fi
        fi
 
            fi
        fi
 

+       # add unprivileged user for the apt methods
+       adduser --force-badname --system --home /nonexistent  \
+           --no-create-home --quiet _apt || true
+
+       # Fixup any mistake in the home directory of the _apt user
+       if dpkg --compare-versions "$2" lt-nl 1.1~exp10~; then
+           usermod --home /nonexistent _apt
+       fi
+
+       # deal with upgrades from experimental
+       if dpkg --compare-versions "$2" 'eq' '1.1~exp3'; then
+           # libapt will setup partial/ at runtime
+           chown -R root:root /var/lib/apt/lists /var/cache/apt/archives || true
+       fi
+

         # ensure tighter permissons on the logs, see LP: #975199
         if dpkg --compare-versions "$2" lt-nl 0.9.7.7; then
             # ensure permissions are right
         # ensure tighter permissons on the logs, see LP: #975199
         if dpkg --compare-versions "$2" lt-nl 0.9.7.7; then
             # ensure permissions are right