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Diffstat (limited to 'tests/gpgscm/main.c')
| -rw-r--r-- | tests/gpgscm/main.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/tests/gpgscm/main.c b/tests/gpgscm/main.c new file mode 100644 index 0000000..f2b12aa --- /dev/null +++ b/tests/gpgscm/main.c @@ -0,0 +1,362 @@ +/* TinyScheme-based test driver. + * + * Copyright (C) 2016 g10 code GmbH + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * 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 copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses/>. + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#include <config.h> + +#include <assert.h> +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <gcrypt.h> +#include <gpg-error.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#if HAVE_MMAP +#include <sys/mman.h> +#endif + +#include "private.h" +#include "scheme.h" +#include "scheme-private.h" +#include "ffi.h" +#include "../common/i18n.h" +#include "../../common/argparse.h" +#include "../../common/init.h" +#include "../../common/logging.h" +#include "../../common/strlist.h" +#include "../../common/sysutils.h" +#include "../../common/util.h" + +/* The TinyScheme banner. Unfortunately, it isn't in the header + file. */ +#define ts_banner "TinyScheme 1.41" + +int verbose; + + + +/* Constants to identify the commands and options. */ +enum cmd_and_opt_values + { + aNull = 0, + oVerbose = 'v', + }; + +/* The list of commands and options. */ +static ARGPARSE_OPTS opts[] = + { + ARGPARSE_s_n (oVerbose, "verbose", N_("verbose")), + ARGPARSE_end (), + }; + +char *scmpath = ""; +size_t scmpath_len = 0; + +/* Command line parsing. */ +static void +parse_arguments (ARGPARSE_ARGS *pargs, ARGPARSE_OPTS *popts) +{ + + while (gnupg_argparse (NULL, pargs, popts)) + { + switch (pargs->r_opt) + { + case oVerbose: + verbose++; + break; + + default: + pargs->err = ARGPARSE_PRINT_ERROR; + break; + } + } +} + +/* Print usage information and provide strings for help. */ +static const char * +my_strusage( int level ) +{ + const char *p; + + switch (level) + { + case 9: p = "GPL-3.0-or-later"; break; + case 11: p = "gpgscm (@GNUPG@)"; + break; + case 13: p = VERSION; break; + case 14: p = GNUPG_DEF_COPYRIGHT_LINE; break; + case 17: p = PRINTABLE_OS_NAME; break; + case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break; + + case 1: + case 40: + p = _("Usage: gpgscm [options] [file] (-h for help)"); + break; + case 41: + p = _("Syntax: gpgscm [options] [file]\n" + "Execute the given Scheme program, or spawn interactive shell.\n"); + break; + + default: p = NULL; break; + } + return p; +} + + + +static int +path_absolute_p (const char *p) +{ +#if _WIN32 + return ((strlen (p) > 2 && p[1] == ':' && (p[2] == '\\' || p[2] == '/')) + || p[0] == '\\' || p[0] == '/'); +#else + return p[0] == '/'; +#endif +} + + +/* Load the Scheme program from FILE_NAME. If FILE_NAME is not an + absolute path, and LOOKUP_IN_PATH is given, then it is qualified + with the values in scmpath until the file is found. */ +static gpg_error_t +load (scheme *sc, char *file_name, + int lookup_in_cwd, int lookup_in_path) +{ + gpg_error_t err = 0; + size_t n; + const char *directory; + char *qualified_name = file_name; + int use_path; + FILE *h = NULL; + + use_path = + lookup_in_path && ! (path_absolute_p (file_name) || scmpath_len == 0); + + if (path_absolute_p (file_name) || lookup_in_cwd || scmpath_len == 0) + { + h = fopen (file_name, "r"); + if (! h) + err = gpg_error_from_syserror (); + } + + if (h == NULL && use_path) + for (directory = scmpath, n = scmpath_len; n; + directory += strlen (directory) + 1, n--) + { + if (asprintf (&qualified_name, "%s/%s", directory, file_name) < 0) + return gpg_error_from_syserror (); + + h = fopen (qualified_name, "r"); + if (h) + { + err = 0; + break; + } + + if (n > 1) + { + free (qualified_name); + continue; /* Try again! */ + } + + err = gpg_error_from_syserror (); + } + + if (h == NULL) + { + /* Failed and no more elements in scmpath to try. */ + fprintf (stderr, "Could not read %s: %s.\n", + qualified_name, gpg_strerror (err)); + if (lookup_in_path) + fprintf (stderr, + "Consider using GPGSCM_PATH to specify the location " + "of the Scheme library.\n"); + goto leave; + } + if (verbose > 2) + fprintf (stderr, "Loading %s...\n", qualified_name); + +#if HAVE_MMAP + /* Always try to mmap the file. This allows the pages to be shared + * between processes. If anything fails, we fall back to using + * buffered streams. */ + if (1) + { + struct stat st; + void *map; + size_t len; + int fd = fileno (h); + + if (fd < 0) + goto fallback; + + if (fstat (fd, &st)) + goto fallback; + + len = (size_t) st.st_size; + if ((off_t) len != st.st_size) + goto fallback; /* Truncated. */ + + map = mmap (NULL, len, PROT_READ, MAP_SHARED, fd, 0); + if (map == MAP_FAILED) + goto fallback; + + scheme_load_memory (sc, map, len, qualified_name); + munmap (map, len); + } + else + fallback: +#endif + scheme_load_named_file (sc, h, qualified_name); + fclose (h); + + if (sc->retcode && sc->nesting) + { + fprintf (stderr, "%s: Unbalanced parenthesis\n", qualified_name); + err = gpg_error (GPG_ERR_GENERAL); + } + + leave: + if (file_name != qualified_name) + free (qualified_name); + return err; +} + + + +int +main (int argc, char **argv) +{ + int retcode; + gpg_error_t err; + char *argv0; + ARGPARSE_ARGS pargs; + scheme *sc; + char *p; +#if _WIN32 + char pathsep = ';'; +#else + char pathsep = ':'; +#endif + char *script = NULL; + + /* Save argv[0] so that we can re-exec. */ + argv0 = argv[0]; + + /* Parse path. */ + if (getenv ("GPGSCM_PATH")) + scmpath = getenv ("GPGSCM_PATH"); + + p = scmpath = strdup (scmpath); + if (p == NULL) + return 2; + + if (*p) + scmpath_len++; + for (; *p; p++) + if (*p == pathsep) + *p = 0, scmpath_len++; + + set_strusage (my_strusage); + log_set_prefix ("gpgscm", GPGRT_LOG_WITH_PREFIX); + + /* Make sure that our subsystems are ready. */ + i18n_init (); + init_common_subsystems (&argc, &argv); + + if (!gcry_check_version (NEED_LIBGCRYPT_VERSION)) + { + fputs ("libgcrypt version mismatch\n", stderr); + exit (2); + } + + /* Parse the command line. */ + pargs.argc = &argc; + pargs.argv = &argv; + pargs.flags = 0; + parse_arguments (&pargs, opts); + gnupg_argparse (NULL, &pargs, NULL); + + if (log_get_errorcount (0)) + exit (2); + + sc = scheme_init_new_custom_alloc (gcry_malloc, gcry_free); + if (! sc) { + fprintf (stderr, "Could not initialize TinyScheme!\n"); + return 2; + } + scheme_set_input_port_file (sc, stdin); + scheme_set_output_port_file (sc, stderr); + + if (argc) + { + script = argv[0]; + argc--, argv++; + } + + err = load (sc, "init.scm", 0, 1); + if (! err) + err = load (sc, "ffi.scm", 0, 1); + if (! err) + err = ffi_init (sc, argv0, script ? script : "interactive", + argc, (const char **) argv); + if (! err) + err = load (sc, "lib.scm", 0, 1); + if (! err) + err = load (sc, "repl.scm", 0, 1); + if (! err) + err = load (sc, "xml.scm", 0, 1); + if (! err) + err = load (sc, "tests.scm", 0, 1); + if (! err) + err = load (sc, "gnupg.scm", 0, 1); + if (err) + { + fprintf (stderr, "Error initializing gpgscm: %s.\n", + gpg_strerror (err)); + exit (2); + } + + if (script == NULL) + { + /* Interactive shell. */ + fprintf (stderr, "gpgscm/"ts_banner".\n"); + scheme_load_string (sc, "(interactive-repl)"); + } + else + { + err = load (sc, script, 1, 1); + if (err) + log_fatal ("%s: %s", script, gpg_strerror (err)); + } + + retcode = sc->retcode; + scheme_load_string (sc, "(*run-atexit-handlers*)"); + scheme_deinit (sc); + xfree (sc); + return retcode; +} |