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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
4917e7c7 LP |
2 | |
3 | #if HAVE_LIBIDN2 | |
4 | # include <idn2.h> | |
5 | #elif HAVE_LIBIDN | |
6 | # include <idna.h> | |
7 | # include <stringprep.h> | |
8 | #endif | |
9 | ||
10 | #include "alloc-util.h" | |
11 | #include "dlfcn-util.h" | |
12 | #include "idn-util.h" | |
13 | ||
14 | #if HAVE_LIBIDN || HAVE_LIBIDN2 | |
15 | static void* idn_dl = NULL; | |
16 | #endif | |
17 | ||
18 | #if HAVE_LIBIDN2 | |
19 | int (*sym_idn2_lookup_u8)(const uint8_t* src, uint8_t** lookupname, int flags) = NULL; | |
7736a71f | 20 | const char *(*sym_idn2_strerror)(int rc) _const_ = NULL; |
4917e7c7 LP |
21 | int (*sym_idn2_to_unicode_8z8z)(const char * input, char ** output, int flags) = NULL; |
22 | ||
23 | int dlopen_idn(void) { | |
1622ef77 ZJS |
24 | return dlopen_many_sym_or_warn( |
25 | &idn_dl, "libidn2.so.0", LOG_DEBUG, | |
5517e214 LP |
26 | DLSYM_ARG(idn2_lookup_u8), |
27 | DLSYM_ARG(idn2_strerror), | |
1622ef77 | 28 | DLSYM_ARG(idn2_to_unicode_8z8z)); |
4917e7c7 LP |
29 | } |
30 | #endif | |
31 | ||
32 | #if HAVE_LIBIDN | |
33 | int (*sym_idna_to_ascii_4i)(const uint32_t * in, size_t inlen, char *out, int flags); | |
7736a71f | 34 | int (*sym_idna_to_unicode_44i)(const uint32_t * in, size_t inlen, uint32_t * out, size_t * outlen, int flags); |
4917e7c7 LP |
35 | char* (*sym_stringprep_ucs4_to_utf8)(const uint32_t * str, ssize_t len, size_t * items_read, size_t * items_written); |
36 | uint32_t* (*sym_stringprep_utf8_to_ucs4)(const char *str, ssize_t len, size_t *items_written); | |
37 | ||
38 | int dlopen_idn(void) { | |
39 | _cleanup_(dlclosep) void *dl = NULL; | |
40 | int r; | |
41 | ||
42 | if (idn_dl) | |
43 | return 0; /* Already loaded */ | |
44 | ||
45 | dl = dlopen("libidn.so.12", RTLD_LAZY); | |
46 | if (!dl) { | |
47 | /* libidn broke ABI in 1.34, but not in a way we care about (a new field got added to an | |
48 | * open-coded struct we do not use), hence support both versions. */ | |
49 | dl = dlopen("libidn.so.11", RTLD_LAZY); | |
50 | if (!dl) | |
51 | return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), | |
52 | "libidn support is not installed: %s", dlerror()); | |
53 | } | |
54 | ||
fff25ab2 | 55 | r = dlsym_many_or_warn( |
4917e7c7 LP |
56 | dl, |
57 | LOG_DEBUG, | |
5517e214 LP |
58 | DLSYM_ARG(idna_to_ascii_4i), |
59 | DLSYM_ARG(idna_to_unicode_44i), | |
60 | DLSYM_ARG(stringprep_ucs4_to_utf8), | |
cd503dbb | 61 | DLSYM_ARG(stringprep_utf8_to_ucs4)); |
4917e7c7 LP |
62 | if (r < 0) |
63 | return r; | |
64 | ||
65 | idn_dl = TAKE_PTR(dl); | |
66 | ||
67 | return 1; | |
68 | } | |
69 | #endif |