Subject: Re: bug#59292: libreoffice password protection doesn't work

From: Maxim Cournoyer <[email-masked]>
Date: Fri, 17 Feb 2023 23:27:02 -0500

Hi,

It may have to do with not correctly finding the "libnssckbi.so" share
library, which is from NSS.  Here's what tipped me to it, in strace
output:

--8<---------------cut here---------------start------------->8---
13 matches for "ckbi" in buffer: *scratch*
    169:[pid  2594] openat(AT_FDCWD, "/home/maxim/.thunderbird/sjp3hftb.default/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    171:[pid  2594] openat(AT_FDCWD, "/gnu/store/rrid5nx9cbrq0flkhc1rv4b5hk4w70ib-nspr-4.34/lib/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    172:[pid  2594] openat(AT_FDCWD, "/gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    173:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    174:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../tls/x86_64/x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    176:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../tls/x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    178:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../tls/x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    180:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../tls/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    182:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../x86_64/x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    184:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    186:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../x86_64/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    188:[pid  2594] openat(AT_FDCWD, "/gnu/store/094bbaq6glba86h1d4cj16xhdi6fk2jl-gcc-10.3.0-lib/lib/gcc/x86_64-unknown-linux-gnu/10.3.0/../../../libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
    190:[pid  2594] openat(AT_FDCWD, "/gnu/store/5h2w4qi9hk1qzzgi1w83220ydslinr4s-glibc-2.33/lib/libnssckbi.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
--8<---------------cut here---------------end--------------->8---

It never resolves libnssckbi.so.

LibreOffice attempts to load this library in
xmlsecurity/source/xmlsec/nss/nssinitializer.cxx, in the
'nsscrypto_initialize' procedure.

The library appears to be dynamically loaded via SECMOD_LoadUserModule.
Perhaps we can patch 'OUString rootModule("libnssckbi"
SAL_DLLEXTENSION)' to its full name.  Some more output, after building
libreoffice with "--enable-sal-log" and setting the 'SAL_LOG=+INFO'
environment variable:

--8<---------------cut here---------------start------------->8---
info:sal.bootstrap:8927:8927:sal/rtl/bootstrap.cxx:857: expandMacros called with: libnssckbi.so
info:sal.bootstrap:8927:8927:sal/rtl/bootstrap.cxx:985: expandMacros result: libnssckbi.so
info:xmlsecurity.xmlsec:8927:8927:xmlsecurity/source/xmlsec/nss/nssinitializer.cxx:471: FAILED to load the new root certificate module Root Certs for OpenOffice.orgcontained in libnssckbi.so
warn:legacy.osl:8927:8927:comphelper/source/misc/storagehelper.cxx:406: Can not create SHA256 digest!
warn:package.xstor:8927:8927:package/source/xstor/owriteablestream.cxx:1138: Can't write encryption related properties com.sun.star.uno.RuntimeException message: "No expected key is provided! at /tmp/guix-build-libreoffice-7.5.0.3.drv-0/libreoffice-7.5.0.3/package/source/zippackage/ZipPackageStream.cxx:243"
info:package.xstor:8927:8927:package/source/xstor/xstorage.cxx:2274: Rethrow com.sun.star.io.IOException message: "No expected key is provided! at /tmp/guix-build-libreoffice-7.5.0.3.drv-0/libreoffice-7.5.0.3/package/source/zippackage/ZipPackageStream.cxx:243 at /tmp/guix-build-libreoffice-7.5.0.3.drv-0/libreoffice-7.5.0.3/package/source/xstor/owriteablestream.cxx:1140"
--8<---------------cut here---------------end--------------->8---

So it seems to cause an error, which is apparently ignored.

-- 
Thanks,
Maxim