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+/* 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 <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef GNUPG_COMMON_UTIL_H
+#define GNUPG_COMMON_UTIL_H
+
+#include <gcrypt.h> /* We need this for the memory function protos. */
+#include <errno.h> /* We need errno. */
+#include <gpg-error.h> /* 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 < 0x012400 /* 1.36 */
+# define GPG_ERR_NO_AUTH 314
+# define GPG_ERR_BAD_AUTH 315
+#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);
+
+/*-- 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_enum_curves (int *idxp);
+const char *openpgp_is_curve_supported (const char *name,
+ int *r_algo, unsigned int *r_nbits);
+
+
+/*-- 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 char *s, int *ret_rc);
+
+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*/
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