/* util.h - Utility functions for GnuPG * Copyright (C) 2001, 2002, 2003, 2004, 2009 Free Software Foundation, Inc. * * This file is part of GnuPG. * * GnuPG is free software; you can redistribute and/or modify this * part of GnuPG under the terms of either * * - the GNU Lesser General Public License as published by the Free * Software Foundation; either version 3 of the License, or (at * your option) any later version. * * or * * - the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at * your option) any later version. * * or both in parallel, as here. * * GnuPG is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copies of the GNU General Public License * and the GNU Lesser General Public License along with this program; * if not, see . */ #ifndef GNUPG_COMMON_UTIL_H #define GNUPG_COMMON_UTIL_H #include /* We need this for the memory function protos. */ #include /* We need errno. */ #include /* We need gpg_error_t and estream. */ /* These error codes might be used but not defined in the required * libgpg-error version. Define them here. * Example: (#if GPG_ERROR_VERSION_NUMBER < 0x011500 // 1.21) */ #if GPG_ERROR_VERSION_NUMBER < 0x012f00 /* 1.47 */ #define GPG_ERR_BAD_PUK 320 #define GPG_ERR_NO_RESET_CODE 321 #define GPG_ERR_BAD_RESET_CODE 322 #endif #ifndef EXTERN_UNLESS_MAIN_MODULE # if !defined (INCLUDED_BY_MAIN_MODULE) # define EXTERN_UNLESS_MAIN_MODULE extern # else # define EXTERN_UNLESS_MAIN_MODULE # endif #endif /* Hash function used with libksba. */ #define HASH_FNC ((void (*)(void *, const void*,size_t))gcry_md_write) /* The length of the keygrip. This is a SHA-1 hash of the key * parameters as generated by gcry_pk_get_keygrip. */ #define KEYGRIP_LEN 20 /* Get all the stuff from jnlib. */ #include "../common/logging.h" #include "../common/argparse.h" #include "../common/stringhelp.h" #include "../common/mischelp.h" #include "../common/strlist.h" #include "../common/dotlock.h" #include "../common/utf8conv.h" #include "../common/dynload.h" #include "../common/fwddecl.h" #include "../common/utilproto.h" #include "gettime.h" /* Redefine asprintf by our estream version which uses our own memory allocator.. */ #define asprintf gpgrt_asprintf #define vasprintf gpgrt_vasprintf /* Due to a bug in mingw32's snprintf related to the 'l' modifier and for increased portability we use our snprintf on all systems. */ #undef snprintf #define snprintf gpgrt_snprintf /* Replacements for macros not available with libgpg-error < 1.20. */ /* We need this type even if we are not using libreadline and or we did not include libreadline in the current file. */ #ifndef GNUPG_LIBREADLINE_H_INCLUDED typedef char **rl_completion_func_t (const char *, int, int); #endif /*!GNUPG_LIBREADLINE_H_INCLUDED*/ /* Handy malloc macros - please use only them. */ #define xtrymalloc(a) gcry_malloc ((a)) #define xtrymalloc_secure(a) gcry_malloc_secure ((a)) #define xtrycalloc(a,b) gcry_calloc ((a),(b)) #define xtrycalloc_secure(a,b) gcry_calloc_secure ((a),(b)) #define xtryrealloc(a,b) gcry_realloc ((a),(b)) #define xtrystrdup(a) gcry_strdup ((a)) #define xfree(a) gcry_free ((a)) #define xfree_fnc gcry_free #define xmalloc(a) gcry_xmalloc ((a)) #define xmalloc_secure(a) gcry_xmalloc_secure ((a)) #define xcalloc(a,b) gcry_xcalloc ((a),(b)) #define xcalloc_secure(a,b) gcry_xcalloc_secure ((a),(b)) #define xrealloc(a,b) gcry_xrealloc ((a),(b)) #define xstrdup(a) gcry_xstrdup ((a)) /* For compatibility with gpg 1.4 we also define these: */ #define xmalloc_clear(a) gcry_xcalloc (1, (a)) #define xmalloc_secure_clear(a) gcry_xcalloc_secure (1, (a)) /* The default error source of the application. This is different from GPG_ERR_SOURCE_DEFAULT in that it does not depend on the source file and thus is usable in code shared by applications. Defined by init.c. */ extern gpg_err_source_t default_errsource; /* Convenience function to return a gpg-error code for memory allocation failures. This function makes sure that an error will be returned even if accidentally ERRNO is not set. */ static inline gpg_error_t out_of_core (void) { return gpg_error_from_syserror (); } /*-- yesno.c --*/ int answer_is_yes (const char *s); int answer_is_yes_no_default (const char *s, int def_answer); int answer_is_yes_no_quit (const char *s); int answer_is_okay_cancel (const char *s, int def_answer); /*-- xreadline.c --*/ ssize_t read_line (FILE *fp, char **addr_of_buffer, size_t *length_of_buffer, size_t *max_length); /*-- b64enc.c and b64dec.c --*/ struct b64state { unsigned int flags; int idx; int quad_count; FILE *fp; estream_t stream; char *title; unsigned char radbuf[4]; u32 crc; int stop_seen:1; int invalid_encoding:1; gpg_error_t lasterr; }; gpg_error_t b64enc_start (struct b64state *state, FILE *fp, const char *title); gpg_error_t b64enc_start_es (struct b64state *state, estream_t fp, const char *title); gpg_error_t b64enc_write (struct b64state *state, const void *buffer, size_t nbytes); gpg_error_t b64enc_finish (struct b64state *state); gpg_error_t b64dec_start (struct b64state *state, const char *title); gpg_error_t b64dec_proc (struct b64state *state, void *buffer, size_t length, size_t *r_nbytes); gpg_error_t b64dec_finish (struct b64state *state); gpg_error_t b64decode (const char *string, const char *title, void **r_buffer, size_t *r_buflen); /*-- sexputil.c */ char *canon_sexp_to_string (const unsigned char *canon, size_t canonlen); void log_printcanon (const char *text, const unsigned char *sexp, size_t sexplen); void log_printsexp (const char *text, gcry_sexp_t sexp); gpg_error_t make_canon_sexp (gcry_sexp_t sexp, unsigned char **r_buffer, size_t *r_buflen); gpg_error_t make_canon_sexp_pad (gcry_sexp_t sexp, int secure, unsigned char **r_buffer, size_t *r_buflen); gpg_error_t keygrip_from_canon_sexp (const unsigned char *key, size_t keylen, unsigned char *grip); int cmp_simple_canon_sexp (const unsigned char *a, const unsigned char *b); int cmp_canon_sexp (const unsigned char *a, size_t alen, const unsigned char *b, size_t blen, int (*tcmp)(void *ctx, int depth, const unsigned char *aval, size_t avallen, const unsigned char *bval, size_t bvallen), void *tcmpctx); unsigned char *make_simple_sexp_from_hexstr (const char *line, size_t *nscanned); int hash_algo_from_sigval (const unsigned char *sigval); unsigned char *make_canon_sexp_from_rsa_pk (const void *m, size_t mlen, const void *e, size_t elen, size_t *r_len); gpg_error_t get_rsa_pk_from_canon_sexp (const unsigned char *keydata, size_t keydatalen, unsigned char const **r_n, size_t *r_nlen, unsigned char const **r_e, size_t *r_elen); gpg_error_t get_ecc_q_from_canon_sexp (const unsigned char *keydata, size_t keydatalen, unsigned char const **r_q, size_t *r_qlen); gpg_error_t uncompress_ecc_q_in_canon_sexp (const unsigned char *keydata, size_t keydatalen, unsigned char **r_newkeydata, size_t *r_newkeydatalen); int get_pk_algo_from_key (gcry_sexp_t key); int get_pk_algo_from_canon_sexp (const unsigned char *keydata, size_t keydatalen); char *pubkey_algo_string (gcry_sexp_t s_pkey, enum gcry_pk_algos *r_algoid); const char *pubkey_algo_to_string (int algo); const char *hash_algo_to_string (int algo); const char *cipher_mode_to_string (int mode); /*-- convert.c --*/ int hex2bin (const char *string, void *buffer, size_t length); int hexcolon2bin (const char *string, void *buffer, size_t length); char *bin2hex (const void *buffer, size_t length, char *stringbuf); char *bin2hexcolon (const void *buffer, size_t length, char *stringbuf); const char *hex2str (const char *hexstring, char *buffer, size_t bufsize, size_t *buflen); char *hex2str_alloc (const char *hexstring, size_t *r_count); /*-- percent.c --*/ char *percent_plus_escape (const char *string); char *percent_data_escape (int plus_escape, const char *prefix, const void *data, size_t datalen); char *percent_plus_unescape (const char *string, int nulrepl); char *percent_unescape (const char *string, int nulrepl); size_t percent_plus_unescape_inplace (char *string, int nulrepl); size_t percent_unescape_inplace (char *string, int nulrepl); /*-- openpgp-oid.c --*/ gpg_error_t openpgp_oid_from_str (const char *string, gcry_mpi_t *r_mpi); char *openpgp_oidbuf_to_str (const unsigned char *buf, size_t len); char *openpgp_oid_to_str (gcry_mpi_t a); int openpgp_oidbuf_is_ed25519 (const void *buf, size_t len); int openpgp_oid_is_ed25519 (gcry_mpi_t a); int openpgp_oidbuf_is_cv25519 (const void *buf, size_t len); int openpgp_oid_is_cv25519 (gcry_mpi_t a); const char *openpgp_curve_to_oid (const char *name, unsigned int *r_nbits, int *r_algo); const char *openpgp_oid_to_curve (const char *oid, int canon); const char *openpgp_oid_or_name_to_curve (const char *oidname, int canon); const char *openpgp_enum_curves (int *idxp); const char *openpgp_is_curve_supported (const char *name, int *r_algo, unsigned int *r_nbits); const char *get_keyalgo_string (enum gcry_pk_algos algo, unsigned int nbits, const char *curve); /*-- homedir.c --*/ const char *standard_homedir (void); const char *default_homedir (void); void gnupg_set_homedir (const char *newdir); void gnupg_maybe_make_homedir (const char *fname, int quiet); const char *gnupg_homedir (void); int gnupg_default_homedir_p (void); const char *gnupg_daemon_rootdir (void); const char *gnupg_socketdir (void); const char *gnupg_sysconfdir (void); const char *gnupg_bindir (void); const char *gnupg_libexecdir (void); const char *gnupg_libdir (void); const char *gnupg_datadir (void); const char *gnupg_localedir (void); const char *gpg_agent_socket_name (void); const char *dirmngr_socket_name (void); char *_gnupg_socketdir_internal (int skip_checks, unsigned *r_info); /* All module names. We also include gpg and gpgsm for the sake for gpgconf. */ #define GNUPG_MODULE_NAME_AGENT 1 #define GNUPG_MODULE_NAME_PINENTRY 2 #define GNUPG_MODULE_NAME_SCDAEMON 3 #define GNUPG_MODULE_NAME_DIRMNGR 4 #define GNUPG_MODULE_NAME_PROTECT_TOOL 5 #define GNUPG_MODULE_NAME_CHECK_PATTERN 6 #define GNUPG_MODULE_NAME_GPGSM 7 #define GNUPG_MODULE_NAME_GPG 8 #define GNUPG_MODULE_NAME_CONNECT_AGENT 9 #define GNUPG_MODULE_NAME_GPGCONF 10 #define GNUPG_MODULE_NAME_DIRMNGR_LDAP 11 #define GNUPG_MODULE_NAME_GPGV 12 const char *gnupg_module_name (int which); void gnupg_module_name_flush_some (void); void gnupg_set_builddir (const char *newdir); /*-- gpgrlhelp.c --*/ void gnupg_rl_initialize (void); /*-- helpfile.c --*/ char *gnupg_get_help_string (const char *key, int only_current_locale); /*-- localename.c --*/ const char *gnupg_messages_locale_name (void); /*-- sysutils.c --*/ FILE *gnupg_fopen (const char *fname, const char *mode); /*-- miscellaneous.c --*/ /* This function is called at startup to tell libgcrypt to use our own logging subsystem. */ void setup_libgcrypt_logging (void); /* Print an out of core message and die. */ void xoutofcore (void); /* Array allocation. */ void *gnupg_reallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size); void *xreallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size); /* Same as estream_asprintf but die on memory failure. */ char *xasprintf (const char *fmt, ...) GPGRT_ATTR_PRINTF(1,2); /* This is now an alias to estream_asprintf. */ char *xtryasprintf (const char *fmt, ...) GPGRT_ATTR_PRINTF(1,2); void *xtryreallocarray (void *a, size_t oldnmemb, size_t nmemb, size_t size); /* Replacement for gcry_cipher_algo_name. */ const char *gnupg_cipher_algo_name (int algo); void obsolete_option (const char *configname, unsigned int configlineno, const char *name); const char *print_fname_stdout (const char *s); const char *print_fname_stdin (const char *s); void print_utf8_buffer3 (estream_t fp, const void *p, size_t n, const char *delim); void print_utf8_buffer2 (estream_t fp, const void *p, size_t n, int delim); void print_utf8_buffer (estream_t fp, const void *p, size_t n); void print_utf8_string (estream_t stream, const char *p); void print_hexstring (FILE *fp, const void *buffer, size_t length, int reserved); char *try_make_printable_string (const void *p, size_t n, int delim); char *make_printable_string (const void *p, size_t n, int delim); char *decode_c_string (const char *src); int is_file_compressed (const byte *buf, unsigned int buflen); int match_multistr (const char *multistr,const char *match); int gnupg_compare_version (const char *a, const char *b); struct debug_flags_s { unsigned int flag; const char *name; }; int parse_debug_flag (const char *string, unsigned int *debugvar, const struct debug_flags_s *flags); struct compatibility_flags_s { unsigned int flag; const char *name; const char *desc; }; int parse_compatibility_flags (const char *string, unsigned int *flagvar, const struct compatibility_flags_s *flags); /*-- Simple replacement functions. */ /* We use the gnupg_ttyname macro to be safe not to run into conflicts which an extisting but broken ttyname. */ #if !defined(HAVE_TTYNAME) || defined(HAVE_BROKEN_TTYNAME) # define gnupg_ttyname(n) _gnupg_ttyname ((n)) /* Systems without ttyname (W32) will merely return NULL. */ static inline char * _gnupg_ttyname (int fd) { (void)fd; return NULL; } #else /*HAVE_TTYNAME*/ # define gnupg_ttyname(n) ttyname ((n)) #endif /*HAVE_TTYNAME */ #ifdef HAVE_W32CE_SYSTEM #define getpid() GetCurrentProcessId () char *_gnupg_getenv (const char *name); /* See sysutils.c */ #define getenv(a) _gnupg_getenv ((a)) char *_gnupg_setenv (const char *name); /* See sysutils.c */ #define setenv(a,b,c) _gnupg_setenv ((a),(b),(c)) int _gnupg_isatty (int fd); #define gnupg_isatty(a) _gnupg_isatty ((a)) #else #define gnupg_isatty(a) isatty ((a)) #endif /*-- Macros to replace ctype ones to avoid locale problems. --*/ #define spacep(p) (*(p) == ' ' || *(p) == '\t') #define digitp(p) (*(p) >= '0' && *(p) <= '9') #define alphap(p) ((*(p) >= 'A' && *(p) <= 'Z') \ || (*(p) >= 'a' && *(p) <= 'z')) #define alnump(p) (alphap (p) || digitp (p)) #define hexdigitp(a) (digitp (a) \ || (*(a) >= 'A' && *(a) <= 'F') \ || (*(a) >= 'a' && *(a) <= 'f')) /* Note this isn't identical to a C locale isspace() without \f and \v, but works for the purposes used here. */ #define ascii_isspace(a) ((a)==' ' || (a)=='\n' || (a)=='\r' || (a)=='\t') /* The atoi macros assume that the buffer has only valid digits. */ #define atoi_1(p) (*(p) - '0' ) #define atoi_2(p) ((atoi_1(p) * 10) + atoi_1((p)+1)) #define atoi_4(p) ((atoi_2(p) * 100) + atoi_2((p)+2)) #define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \ *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10)) #define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1)) #define xtoi_4(p) ((xtoi_2(p) * 256) + xtoi_2((p)+2)) #endif /*GNUPG_COMMON_UTIL_H*/