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cd7c207795
Use 'recommended' priority for the default compression library, to indicate that it should be prioritized over the other ones, as it will be used to compress journals/core files. Also use 'recommended' for kmod, as systems will likely fail to boot if it's missing from the initrd. Use 'suggested' for everything else. There is one dlopen'ed TPM library that has the name generated at runtime (depending on the driver), so that cannot be added, as it needs to be known at build time. Also when we support multiple ABI versions list them all, as for the same reason we cannot know which one will be used at build time. $ dlopen-notes.py build/libsystemd.so.0.39.0 build/src/shared/libsystemd-shared-256.so libarchive.so.13 suggested libbpf.so.0 suggested libbpf.so.1 suggested libcryptsetup.so.12 suggested libdw.so.1 suggested libelf.so.1 suggested libfido2.so.1 suggested libgcrypt.so.20 suggested libidn2.so.0 suggested libip4tc.so.2 suggested libkmod.so.2 recommended liblz4.so.1 suggested liblzma.so.5 suggested libp11-kit.so.0 suggested libpcre2-8.so.0 suggested libpwquality.so.1 suggested libqrencode.so.3 suggested libqrencode.so.4 suggested libtss2-esys.so.0 suggested libtss2-mu.so.0 suggested libtss2-rc.so.0 suggested libzstd.so.1 recommended Co-authored-by: Luca Boccassi <bluca@debian.org>
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#if HAVE_LIBIDN2
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# include <idn2.h>
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#elif HAVE_LIBIDN
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# include <idna.h>
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# include <stringprep.h>
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#endif
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#include "alloc-util.h"
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#include "dlfcn-util.h"
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#include "idn-util.h"
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#if HAVE_LIBIDN || HAVE_LIBIDN2
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static void* idn_dl = NULL;
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#endif
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#if HAVE_LIBIDN2
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DLSYM_FUNCTION(idn2_lookup_u8);
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const char *(*sym_idn2_strerror)(int rc) _const_ = NULL;
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DLSYM_FUNCTION(idn2_to_unicode_8z8z);
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int dlopen_idn(void) {
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ELF_NOTE_DLOPEN("idn",
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"Support for internationalized domain names",
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ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
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"libidn2.so.0");
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return dlopen_many_sym_or_warn(
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&idn_dl, "libidn2.so.0", LOG_DEBUG,
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DLSYM_ARG(idn2_lookup_u8),
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DLSYM_ARG(idn2_strerror),
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DLSYM_ARG(idn2_to_unicode_8z8z));
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}
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#endif
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#if HAVE_LIBIDN
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DLSYM_FUNCTION(idna_to_ascii_4i);
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DLSYM_FUNCTION(idna_to_unicode_44i);
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DLSYM_FUNCTION(stringprep_ucs4_to_utf8);
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DLSYM_FUNCTION(stringprep_utf8_to_ucs4);
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int dlopen_idn(void) {
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_cleanup_(dlclosep) void *dl = NULL;
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int r;
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ELF_NOTE_DLOPEN("idn",
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"Support for internationalized domain names",
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ELF_NOTE_DLOPEN_PRIORITY_SUGGESTED,
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"libidn.so.12", "libidn.so.11");
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if (idn_dl)
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return 0; /* Already loaded */
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dl = dlopen("libidn.so.12", RTLD_LAZY);
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if (!dl) {
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/* libidn broke ABI in 1.34, but not in a way we care about (a new field got added to an
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* open-coded struct we do not use), hence support both versions. */
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dl = dlopen("libidn.so.11", RTLD_LAZY);
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if (!dl)
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return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
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"libidn support is not installed: %s", dlerror());
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log_debug("Loaded 'libidn.so.11' via dlopen()");
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} else
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log_debug("Loaded 'libidn.so.12' via dlopen()");
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r = dlsym_many_or_warn(
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dl,
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LOG_DEBUG,
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DLSYM_ARG(idna_to_ascii_4i),
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DLSYM_ARG(idna_to_unicode_44i),
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DLSYM_ARG(stringprep_ucs4_to_utf8),
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DLSYM_ARG(stringprep_utf8_to_ucs4));
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if (r < 0)
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return r;
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idn_dl = TAKE_PTR(dl);
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return 1;
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}
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#endif
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