mirror of
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340 lines
12 KiB
C
340 lines
12 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 JNLIB, which is a subsystem of GnuPG.
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*
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* JNLIB is free software; you can redistribute it and/or modify it
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* 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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* JNLIB 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 <http://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. */
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/* Add error codes available only in newer versions of libgpg-error. */
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#ifndef GPG_ERR_NO_KEYSERVER
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#define GPG_ERR_NO_KEYSERVER 186
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#endif
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#ifndef GPG_ERR_INV_CURVE
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#define GPG_ERR_INV_CURVE 187
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#endif
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#ifndef GPG_ERR_UNKNOWN_CURVE
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#define GPG_ERR_UNKNOWN_CURVE 188
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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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/* Estream replaces most uses of stdio. */
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#include "../common/estream.h"
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#include "../common/estream-printf.h"
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/* Get all the stuff from jnlib. */
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#include "../common/logging.h"
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#include "../common/argparse.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 "init.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 estream_asprintf
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#define vasprintf estream_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 estream_snprintf
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/* GCC attributes. */
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#if __GNUC__ >= 4
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# define GNUPG_GCC_A_SENTINEL(a) __attribute__ ((sentinel(a)))
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#else
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# define GNUPG_GCC_A_SENTINEL(a)
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#endif
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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 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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/* 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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/* 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 accidently 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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/*-- signal.c --*/
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void gnupg_init_signals (int mode, void (*fast_cleanup)(void));
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void gnupg_block_all_signals (void);
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void gnupg_unblock_all_signals (void);
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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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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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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_pk_algo_from_canon_sexp (const unsigned char *keydata,
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size_t keydatalen,
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int *r_algo);
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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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/*-- percent.c --*/
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char *percent_plus_escape (const char *string);
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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_oid_to_str (gcry_mpi_t a);
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/*-- homedir.c --*/
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const char *standard_homedir (void);
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const char *default_homedir (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 *gnupg_cachedir (void);
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const char *dirmngr_socket_name (void);
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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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const char *gnupg_module_name (int which);
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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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/* Same as estream_asprintf but die on memory failure. */
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char *xasprintf (const char *fmt, ...) JNLIB_GCC_A_PRINTF(1,2);
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/* This is now an alias to estream_asprintf. */
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char *xtryasprintf (const char *fmt, ...) JNLIB_GCC_A_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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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_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_hexstring (FILE *fp, const void *buffer, size_t length,
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int reserved);
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char *make_printable_string (const void *p, size_t n, int delim);
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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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/*-- Simple replacement functions. */
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#ifndef HAVE_TTYNAME
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/* Systems without ttyname (W32) will merely return NULL. */
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static inline char *
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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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#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 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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/*-- Forward declaration of the commonly used server control structure. */
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/* (We need it here as it is used by some callback prototypes.) */
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struct server_control_s;
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typedef struct server_control_s *ctrl_t;
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#endif /*GNUPG_COMMON_UTIL_H*/
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