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![Werner Koch](/assets/img/avatar_default.png)
* common/homedir.c (is_gnupg_default_homedir): Use standard_homedir instead of the constant which makes a difference on Windows. (_gnupg_socketdir_internal) [W32]: Move the directory to LOCAL_APPDATA. (gnupg_cachedir): Remove unsued function. * common/sysutils.c (gnupg_rmdir): New. * tools/gpgconf.c (main): s/rmdir/gnupg_rmdir/. -- That is actually a more correct directory than APPDATA. This fixes a problem with installations where the APPDATA is non a network drive and the resulting socket filename is truncated in our socket helper function (because we use sockaddr also for our local socket emulation on Windows). LOCAL_APPDATA is expected to be on the local box and thus in the majority of cases the resulting socket file name will be short enough. GnuPG-bug-id: 5537 Signed-off-by: Werner Koch <wk@gnupg.org>
430 lines
17 KiB
C
430 lines
17 KiB
C
/* util.h - Utility functions for GnuPG
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* Copyright (C) 2001, 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute and/or modify this
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* part of GnuPG under the terms of either
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*
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* - the GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* or
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*
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* - the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* or both in parallel, as here.
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*
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* GnuPG is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copies of the GNU General Public License
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* and the GNU Lesser General Public License along with this program;
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* if not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef GNUPG_COMMON_UTIL_H
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#define GNUPG_COMMON_UTIL_H
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#include <gcrypt.h> /* We need this for the memory function protos. */
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#include <errno.h> /* We need errno. */
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#include <gpg-error.h> /* We need gpg_error_t and estream. */
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/* These error codes are used but not defined in the required
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* libgpg-error version. Define them here.
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* Example: (#if GPG_ERROR_VERSION_NUMBER < 0x011500 // 1.21)
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*/
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#ifndef EXTERN_UNLESS_MAIN_MODULE
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# if !defined (INCLUDED_BY_MAIN_MODULE)
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# define EXTERN_UNLESS_MAIN_MODULE extern
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# else
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# define EXTERN_UNLESS_MAIN_MODULE
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# endif
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#endif
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/* Hash function used with libksba. */
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#define HASH_FNC ((void (*)(void *, const void*,size_t))gcry_md_write)
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/* The length of the keygrip. This is a SHA-1 hash of the key
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* parameters as generated by gcry_pk_get_keygrip. */
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#define KEYGRIP_LEN 20
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/* The length of the unique blob identifier as used by the keyboxd.
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* This is the possible truncated fingerprint of the primary key. */
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#define UBID_LEN 20
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/* Get all the stuff from jnlib. */
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#include "../common/logging.h"
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#include "../common/stringhelp.h"
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#include "../common/mischelp.h"
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#include "../common/strlist.h"
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#include "../common/dotlock.h"
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#include "../common/utf8conv.h"
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#include "../common/dynload.h"
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#include "../common/fwddecl.h"
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#include "../common/utilproto.h"
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#include "gettime.h"
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/* Redefine asprintf by our estream version which uses our own memory
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allocator.. */
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#define asprintf gpgrt_asprintf
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#define vasprintf gpgrt_vasprintf
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/* Due to a bug in mingw32's snprintf related to the 'l' modifier and
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for increased portability we use our snprintf on all systems. */
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#undef snprintf
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#define snprintf gpgrt_snprintf
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/* Replacements for macros not available with libgpg-error < 1.20. */
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/* We need this type even if we are not using libreadline and or we
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did not include libreadline in the current file. */
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#ifndef GNUPG_LIBREADLINE_H_INCLUDED
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typedef char **rl_completion_func_t (const char *, int, int);
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#endif /*!GNUPG_LIBREADLINE_H_INCLUDED*/
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/* Handy malloc macros - please use only them. */
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#define xtrymalloc(a) gcry_malloc ((a))
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#define xtrymalloc_secure(a) gcry_malloc_secure ((a))
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#define xtrycalloc(a,b) gcry_calloc ((a),(b))
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#define xtrycalloc_secure(a,b) gcry_calloc_secure ((a),(b))
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#define xtryrealloc(a,b) gcry_realloc ((a),(b))
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#define xtryreallocarray(a,b,c,d) gpgrt_reallocarray ((a),(b),(c),(d))
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#define xtrystrdup(a) gcry_strdup ((a))
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#define xfree(a) gcry_free ((a))
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#define xfree_fnc gcry_free
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#define xmalloc(a) gcry_xmalloc ((a))
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#define xmalloc_secure(a) gcry_xmalloc_secure ((a))
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#define xcalloc(a,b) gcry_xcalloc ((a),(b))
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#define xcalloc_secure(a,b) gcry_xcalloc_secure ((a),(b))
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#define xrealloc(a,b) gcry_xrealloc ((a),(b))
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#define xstrdup(a) gcry_xstrdup ((a))
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/* See also the xreallocarray prototype below. */
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/* For compatibility with gpg 1.4 we also define these: */
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#define xmalloc_clear(a) gcry_xcalloc (1, (a))
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#define xmalloc_secure_clear(a) gcry_xcalloc_secure (1, (a))
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/* The default error source of the application. This is different
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from GPG_ERR_SOURCE_DEFAULT in that it does not depend on the
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source file and thus is usable in code shared by applications.
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Defined by init.c. */
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extern gpg_err_source_t default_errsource;
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/* Convenience function to return a gpg-error code for memory
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allocation failures. This function makes sure that an error will
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be returned even if accidentally ERRNO is not set. */
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static inline gpg_error_t
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out_of_core (void)
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{
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return gpg_error_from_syserror ();
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}
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/*-- yesno.c --*/
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int answer_is_yes (const char *s);
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int answer_is_yes_no_default (const char *s, int def_answer);
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int answer_is_yes_no_quit (const char *s);
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int answer_is_okay_cancel (const char *s, int def_answer);
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/*-- xreadline.c --*/
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ssize_t read_line (FILE *fp,
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char **addr_of_buffer, size_t *length_of_buffer,
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size_t *max_length);
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/*-- b64enc.c and b64dec.c --*/
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struct b64state
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{
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unsigned int flags;
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int idx;
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int quad_count;
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FILE *fp;
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estream_t stream;
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char *title;
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unsigned char radbuf[4];
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u32 crc;
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int stop_seen:1;
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int invalid_encoding:1;
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gpg_error_t lasterr;
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};
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gpg_error_t b64enc_start (struct b64state *state, FILE *fp, const char *title);
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gpg_error_t b64enc_start_es (struct b64state *state, estream_t fp,
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const char *title);
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gpg_error_t b64enc_write (struct b64state *state,
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const void *buffer, size_t nbytes);
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gpg_error_t b64enc_finish (struct b64state *state);
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gpg_error_t b64dec_start (struct b64state *state, const char *title);
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gpg_error_t b64dec_proc (struct b64state *state, void *buffer, size_t length,
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size_t *r_nbytes);
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gpg_error_t b64dec_finish (struct b64state *state);
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/*-- sexputil.c */
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char *canon_sexp_to_string (const unsigned char *canon, size_t canonlen);
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void log_printcanon (const char *text,
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const unsigned char *sexp, size_t sexplen);
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void log_printsexp (const char *text, gcry_sexp_t sexp);
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gpg_error_t make_canon_sexp (gcry_sexp_t sexp,
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unsigned char **r_buffer, size_t *r_buflen);
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gpg_error_t make_canon_sexp_pad (gcry_sexp_t sexp, int secure,
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unsigned char **r_buffer, size_t *r_buflen);
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gpg_error_t keygrip_from_canon_sexp (const unsigned char *key, size_t keylen,
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unsigned char *grip);
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int cmp_simple_canon_sexp (const unsigned char *a, const unsigned char *b);
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int cmp_canon_sexp (const unsigned char *a, size_t alen,
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const unsigned char *b, size_t blen,
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int (*tcmp)(void *ctx, int depth,
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const unsigned char *aval, size_t avallen,
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const unsigned char *bval, size_t bvallen),
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void *tcmpctx);
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unsigned char *make_simple_sexp_from_hexstr (const char *line,
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size_t *nscanned);
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int hash_algo_from_sigval (const unsigned char *sigval);
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unsigned char *make_canon_sexp_from_rsa_pk (const void *m, size_t mlen,
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const void *e, size_t elen,
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size_t *r_len);
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gpg_error_t get_rsa_pk_from_canon_sexp (const unsigned char *keydata,
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size_t keydatalen,
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unsigned char const **r_n,
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size_t *r_nlen,
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unsigned char const **r_e,
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size_t *r_elen);
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gpg_error_t get_ecc_q_from_canon_sexp (const unsigned char *keydata,
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size_t keydatalen,
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unsigned char const **r_q,
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size_t *r_qlen);
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gpg_error_t uncompress_ecc_q_in_canon_sexp (const unsigned char *keydata,
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size_t keydatalen,
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unsigned char **r_newkeydata,
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size_t *r_newkeydatalen);
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int get_pk_algo_from_key (gcry_sexp_t key);
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int get_pk_algo_from_canon_sexp (const unsigned char *keydata,
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size_t keydatalen);
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char *pubkey_algo_string (gcry_sexp_t s_pkey, enum gcry_pk_algos *r_algoid);
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const char *pubkey_algo_to_string (int algo);
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const char *hash_algo_to_string (int algo);
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const char *cipher_mode_to_string (int mode);
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/*-- convert.c --*/
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int hex2bin (const char *string, void *buffer, size_t length);
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int hexcolon2bin (const char *string, void *buffer, size_t length);
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char *bin2hex (const void *buffer, size_t length, char *stringbuf);
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char *bin2hexcolon (const void *buffer, size_t length, char *stringbuf);
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const char *hex2str (const char *hexstring,
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char *buffer, size_t bufsize, size_t *buflen);
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char *hex2str_alloc (const char *hexstring, size_t *r_count);
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unsigned int hex2fixedbuf (const char *hexstr, void *buffer, size_t bufsize);
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/*-- percent.c --*/
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char *percent_plus_escape (const char *string);
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char *percent_data_escape (int plus, const char *prefix,
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const void *data, size_t datalen);
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char *percent_plus_unescape (const char *string, int nulrepl);
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char *percent_unescape (const char *string, int nulrepl);
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size_t percent_plus_unescape_inplace (char *string, int nulrepl);
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size_t percent_unescape_inplace (char *string, int nulrepl);
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/*-- openpgp-oid.c --*/
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gpg_error_t openpgp_oid_from_str (const char *string, gcry_mpi_t *r_mpi);
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char *openpgp_oidbuf_to_str (const unsigned char *buf, size_t len);
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char *openpgp_oid_to_str (gcry_mpi_t a);
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int openpgp_oidbuf_is_ed25519 (const void *buf, size_t len);
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int openpgp_oid_is_ed25519 (gcry_mpi_t a);
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int openpgp_oidbuf_is_cv25519 (const void *buf, size_t len);
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int openpgp_oid_is_cv25519 (gcry_mpi_t a);
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int openpgp_oid_is_cv448 (gcry_mpi_t a);
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int openpgp_oid_is_ed448 (gcry_mpi_t a);
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const char *openpgp_curve_to_oid (const char *name,
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unsigned int *r_nbits, int *r_algo);
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const char *openpgp_oid_to_curve (const char *oid, int canon);
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const char *openpgp_oid_or_name_to_curve (const char *oidname, int canon);
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const char *openpgp_enum_curves (int *idxp);
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const char *openpgp_is_curve_supported (const char *name,
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int *r_algo, unsigned int *r_nbits);
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const char *get_keyalgo_string (enum gcry_pk_algos algo,
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unsigned int nbits, const char *curve);
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/*-- homedir.c --*/
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const char *standard_homedir (void);
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void gnupg_set_homedir (const char *newdir);
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void gnupg_maybe_make_homedir (const char *fname, int quiet);
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const char *gnupg_homedir (void);
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int gnupg_default_homedir_p (void);
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const char *gnupg_daemon_rootdir (void);
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const char *gnupg_socketdir (void);
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const char *gnupg_sysconfdir (void);
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const char *gnupg_bindir (void);
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const char *gnupg_libexecdir (void);
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const char *gnupg_libdir (void);
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const char *gnupg_datadir (void);
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const char *gnupg_localedir (void);
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const char *gpg_agent_socket_name (void);
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const char *dirmngr_socket_name (void);
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const char *keyboxd_socket_name (void);
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char *_gnupg_socketdir_internal (int skip_checks, unsigned *r_info);
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/* All module names. We also include gpg and gpgsm for the sake for
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gpgconf. */
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#define GNUPG_MODULE_NAME_AGENT 1
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#define GNUPG_MODULE_NAME_PINENTRY 2
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#define GNUPG_MODULE_NAME_SCDAEMON 3
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#define GNUPG_MODULE_NAME_DIRMNGR 4
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#define GNUPG_MODULE_NAME_PROTECT_TOOL 5
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#define GNUPG_MODULE_NAME_CHECK_PATTERN 6
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#define GNUPG_MODULE_NAME_GPGSM 7
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#define GNUPG_MODULE_NAME_GPG 8
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#define GNUPG_MODULE_NAME_CONNECT_AGENT 9
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#define GNUPG_MODULE_NAME_GPGCONF 10
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#define GNUPG_MODULE_NAME_DIRMNGR_LDAP 11
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#define GNUPG_MODULE_NAME_GPGV 12
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#define GNUPG_MODULE_NAME_KEYBOXD 13
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#define GNUPG_MODULE_NAME_TPM2DAEMON 14
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const char *gnupg_module_name (int which);
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void gnupg_module_name_flush_some (void);
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void gnupg_set_builddir (const char *newdir);
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/* A list of constants to identify protocols. This is used by tools
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* which need to distinguish between the different protocols
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* implemented by GnuPG. May be used as bit flags. */
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#define GNUPG_PROTOCOL_OPENPGP 1 /* The one and only (gpg). */
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#define GNUPG_PROTOCOL_CMS 2 /* The core of S/MIME (gpgsm) */
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#define GNUPG_PROTOCOL_SSH_AGENT 4 /* Out ssh-agent implementation */
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/*-- gpgrlhelp.c --*/
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void gnupg_rl_initialize (void);
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/*-- helpfile.c --*/
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char *gnupg_get_help_string (const char *key, int only_current_locale);
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/*-- localename.c --*/
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const char *gnupg_messages_locale_name (void);
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/*-- miscellaneous.c --*/
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/* This function is called at startup to tell libgcrypt to use our own
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logging subsystem. */
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void setup_libgcrypt_logging (void);
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/* Print an out of core message and die. */
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void xoutofcore (void);
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/* Wrapper aroung gpgrt_reallocarray. Uses the gpgrt alloc function
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* which are redirect to the Libgcrypt versions via
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* init_common_subsystems. Thus they can be used interchangeable with
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* the other alloc functions. */
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void *xreallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size);
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/* Same as estream_asprintf but die on memory failure. */
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char *xasprintf (const char *fmt, ...) GPGRT_ATTR_PRINTF(1,2);
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/* This is now an alias to estream_asprintf. */
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char *xtryasprintf (const char *fmt, ...) GPGRT_ATTR_PRINTF(1,2);
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/* Replacement for gcry_cipher_algo_name. */
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const char *gnupg_cipher_algo_name (int algo);
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void obsolete_option (const char *configname, unsigned int configlineno,
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const char *name);
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const char *print_fname_stdout (const char *s);
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const char *print_fname_stdin (const char *s);
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void print_utf8_buffer3 (estream_t fp, const void *p, size_t n,
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const char *delim);
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void print_utf8_buffer2 (estream_t fp, const void *p, size_t n, int delim);
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void print_utf8_buffer (estream_t fp, const void *p, size_t n);
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void print_utf8_string (estream_t stream, const char *p);
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void print_hexstring (FILE *fp, const void *buffer, size_t length,
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int reserved);
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char *try_make_printable_string (const void *p, size_t n, int delim);
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char *make_printable_string (const void *p, size_t n, int delim);
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char *decode_c_string (const char *src);
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int is_file_compressed (const char *s, int *ret_rc);
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int match_multistr (const char *multistr,const char *match);
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int gnupg_compare_version (const char *a, const char *b);
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struct debug_flags_s
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{
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unsigned int flag;
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const char *name;
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};
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int parse_debug_flag (const char *string, unsigned int *debugvar,
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const struct debug_flags_s *flags);
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/*-- Simple replacement functions. */
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/* We use the gnupg_ttyname macro to be safe not to run into conflicts
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which an extisting but broken ttyname. */
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#if !defined(HAVE_TTYNAME) || defined(HAVE_BROKEN_TTYNAME)
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# define gnupg_ttyname(n) _gnupg_ttyname ((n))
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/* Systems without ttyname (W32) will merely return NULL. */
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static inline char *
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_gnupg_ttyname (int fd)
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{
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(void)fd;
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return NULL;
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}
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#else /*HAVE_TTYNAME*/
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# define gnupg_ttyname(n) ttyname ((n))
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#endif /*HAVE_TTYNAME */
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#ifdef HAVE_W32CE_SYSTEM
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#define getpid() GetCurrentProcessId ()
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char *_gnupg_getenv (const char *name); /* See sysutils.c */
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#define getenv(a) _gnupg_getenv ((a))
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char *_gnupg_setenv (const char *name); /* See sysutils.c */
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#define setenv(a,b,c) _gnupg_setenv ((a),(b),(c))
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int _gnupg_isatty (int fd);
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#define gnupg_isatty(a) _gnupg_isatty ((a))
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#else
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#define gnupg_isatty(a) isatty ((a))
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#endif
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/*-- Macros to replace ctype ones to avoid locale problems. --*/
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#define spacep(p) (*(p) == ' ' || *(p) == '\t')
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#define digitp(p) (*(p) >= '0' && *(p) <= '9')
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#define alphap(p) ((*(p) >= 'A' && *(p) <= 'Z') \
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|| (*(p) >= 'a' && *(p) <= 'z'))
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#define alnump(p) (alphap (p) || digitp (p))
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#define hexdigitp(a) (digitp (a) \
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|| (*(a) >= 'A' && *(a) <= 'F') \
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|| (*(a) >= 'a' && *(a) <= 'f'))
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/* Note this isn't identical to a C locale isspace() without \f and
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\v, but works for the purposes used here. */
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#define ascii_isspace(a) ((a)==' ' || (a)=='\n' || (a)=='\r' || (a)=='\t')
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/* The atoi macros assume that the buffer has only valid digits. */
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#define atoi_1(p) (*(p) - '0' )
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#define atoi_2(p) ((atoi_1(p) * 10) + atoi_1((p)+1))
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#define atoi_4(p) ((atoi_2(p) * 100) + atoi_2((p)+2))
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#define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \
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*(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
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#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1))
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#define xtoi_4(p) ((xtoi_2(p) * 256) + xtoi_2((p)+2))
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#endif /*GNUPG_COMMON_UTIL_H*/
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