| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #if HAVE_LIBIDN2 |
| # include <idn2.h> |
| #elif HAVE_LIBIDN |
| # include <idna.h> |
| # include <stringprep.h> |
| #endif |
| |
| #include "alloc-util.h" |
| #include "dlfcn-util.h" |
| #include "idn-util.h" |
| |
| #if HAVE_LIBIDN || HAVE_LIBIDN2 |
| static void* idn_dl = NULL; |
| #endif |
| |
| #if HAVE_LIBIDN2 |
| int (*sym_idn2_lookup_u8)(const uint8_t* src, uint8_t** lookupname, int flags) = NULL; |
| const char *(*sym_idn2_strerror)(int rc) = NULL; |
| int (*sym_idn2_to_unicode_8z8z)(const char * input, char ** output, int flags) = NULL; |
| |
| int dlopen_idn(void) { |
| return dlopen_many_sym_or_warn( |
| &idn_dl, "libidn2.so.0", LOG_DEBUG, |
| DLSYM_ARG(idn2_lookup_u8), |
| DLSYM_ARG(idn2_strerror), |
| DLSYM_ARG(idn2_to_unicode_8z8z)); |
| } |
| #endif |
| |
| #if HAVE_LIBIDN |
| int (*sym_idna_to_ascii_4i)(const uint32_t * in, size_t inlen, char *out, int flags); |
| int (*sym_idna_to_unicode_44i)(const uint32_t * in, size_t inlen,uint32_t * out, size_t * outlen, int flags); |
| char* (*sym_stringprep_ucs4_to_utf8)(const uint32_t * str, ssize_t len, size_t * items_read, size_t * items_written); |
| uint32_t* (*sym_stringprep_utf8_to_ucs4)(const char *str, ssize_t len, size_t *items_written); |
| |
| int dlopen_idn(void) { |
| _cleanup_(dlclosep) void *dl = NULL; |
| int r; |
| |
| if (idn_dl) |
| return 0; /* Already loaded */ |
| |
| dl = dlopen("libidn.so.12", RTLD_LAZY); |
| if (!dl) { |
| /* libidn broke ABI in 1.34, but not in a way we care about (a new field got added to an |
| * open-coded struct we do not use), hence support both versions. */ |
| dl = dlopen("libidn.so.11", RTLD_LAZY); |
| if (!dl) |
| return log_debug_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), |
| "libidn support is not installed: %s", dlerror()); |
| } |
| |
| r = dlsym_many_or_warn( |
| dl, |
| LOG_DEBUG, |
| DLSYM_ARG(idna_to_ascii_4i), |
| DLSYM_ARG(idna_to_unicode_44i), |
| DLSYM_ARG(stringprep_ucs4_to_utf8), |
| DLSYM_ARG(stringprep_utf8_to_ucs4)); |
| if (r < 0) |
| return r; |
| |
| idn_dl = TAKE_PTR(dl); |
| |
| return 1; |
| } |
| #endif |