mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 16:37:19 +09:00
5c672e90a6
When looking at how dlopen for various libs is implemented, I found that the macros hide too much. I find it much easier to see what is going on if 'extern' and '= NULL' are written explicitly. After all, we don't hide those for other definitions, e.g. our style guide says that static variables should be initialized with '= NULL'. With that change, it's much more obvious what is a variable declaration and what is a variable initialization.
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <errno.h>
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#include <stdbool.h>
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#include <stddef.h>
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#if HAVE_GCRYPT
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#include <gcrypt.h>
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#include "dlfcn-util.h"
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#include "macro.h"
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extern DLSYM_PROTOTYPE(gcry_md_close);
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extern DLSYM_PROTOTYPE(gcry_md_copy);
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extern DLSYM_PROTOTYPE(gcry_md_ctl);
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extern DLSYM_PROTOTYPE(gcry_md_get_algo_dlen);
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extern DLSYM_PROTOTYPE(gcry_md_open);
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extern DLSYM_PROTOTYPE(gcry_md_read);
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extern DLSYM_PROTOTYPE(gcry_md_reset);
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extern DLSYM_PROTOTYPE(gcry_md_setkey);
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extern DLSYM_PROTOTYPE(gcry_md_write);
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extern DLSYM_PROTOTYPE(gcry_mpi_add);
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extern DLSYM_PROTOTYPE(gcry_mpi_add_ui);
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extern DLSYM_PROTOTYPE(gcry_mpi_cmp);
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extern DLSYM_PROTOTYPE(gcry_mpi_cmp_ui);
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extern DLSYM_PROTOTYPE(gcry_mpi_get_nbits);
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extern DLSYM_PROTOTYPE(gcry_mpi_invm);
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extern DLSYM_PROTOTYPE(gcry_mpi_mod);
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extern DLSYM_PROTOTYPE(gcry_mpi_mul);
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extern DLSYM_PROTOTYPE(gcry_mpi_mulm);
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extern DLSYM_PROTOTYPE(gcry_mpi_new);
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extern DLSYM_PROTOTYPE(gcry_mpi_powm);
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extern DLSYM_PROTOTYPE(gcry_mpi_print);
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extern DLSYM_PROTOTYPE(gcry_mpi_release);
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extern DLSYM_PROTOTYPE(gcry_mpi_scan);
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extern DLSYM_PROTOTYPE(gcry_mpi_set_ui);
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extern DLSYM_PROTOTYPE(gcry_mpi_sub);
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extern DLSYM_PROTOTYPE(gcry_mpi_subm);
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extern DLSYM_PROTOTYPE(gcry_mpi_sub_ui);
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extern DLSYM_PROTOTYPE(gcry_prime_check);
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extern DLSYM_PROTOTYPE(gcry_randomize);
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extern DLSYM_PROTOTYPE(gcry_strerror);
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int initialize_libgcrypt(bool secmem);
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static inline gcry_md_hd_t* sym_gcry_md_closep(gcry_md_hd_t *md) {
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if (!md || !*md)
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return NULL;
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sym_gcry_md_close(*md);
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return NULL;
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}
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DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(gcry_md_hd_t, gcry_md_close, NULL);
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/* Copied from gcry_md_putc from gcrypt.h due to the need to call the sym_ variant */
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#define sym_gcry_md_putc(h,c) \
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do { \
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gcry_md_hd_t h__ = (h); \
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if ((h__)->bufpos == (h__)->bufsize) \
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sym_gcry_md_write((h__), NULL, 0); \
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(h__)->buf[(h__)->bufpos++] = (c) & 0xff; \
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} while(false)
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#endif
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#if !PREFER_OPENSSL
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# if HAVE_GCRYPT
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int string_hashsum(const char *s, size_t len, int md_algorithm, char **out);
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# endif
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static inline int string_hashsum_sha224(const char *s, size_t len, char **out) {
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# if HAVE_GCRYPT
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return string_hashsum(s, len, GCRY_MD_SHA224, out);
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# else
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return -EOPNOTSUPP;
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# endif
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}
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static inline int string_hashsum_sha256(const char *s, size_t len, char **out) {
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# if HAVE_GCRYPT
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return string_hashsum(s, len, GCRY_MD_SHA256, out);
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# else
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return -EOPNOTSUPP;
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# endif
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}
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#endif
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