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Diffstat (limited to '')
| -rw-r--r-- | plugins/sudoers/testsudoers.c | 782 |
1 files changed, 782 insertions, 0 deletions
diff --git a/plugins/sudoers/testsudoers.c b/plugins/sudoers/testsudoers.c new file mode 100644 index 0000000..2ebd7b4 --- /dev/null +++ b/plugins/sudoers/testsudoers.c @@ -0,0 +1,782 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 1996, 1998-2005, 2007-2023 + * Todd C. Miller <Todd.Miller@sudo.ws> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Sponsored in part by the Defense Advanced Research Projects + * Agency (DARPA) and Air Force Research Laboratory, Air Force + * Materiel Command, USAF, under agreement number F39502-99-1-0512. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include <config.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <stdio.h> +#include <stdlib.h> +#ifdef HAVE_STDBOOL_H +# include <stdbool.h> +#else +# include <compat/stdbool.h> +#endif /* HAVE_STDBOOL_H */ +#include <string.h> +#ifdef HAVE_STRINGS_H +# include <strings.h> +#endif /* HAVE_STRINGS_H */ +#include <unistd.h> +#include <errno.h> + +#include <testsudoers_pwutil.h> +#include <toke.h> +#include <tsgetgrpw.h> +#include <sudoers.h> +#include <interfaces.h> +#include <sudo_conf.h> +#include <sudo_lbuf.h> +#include <gram.h> + +#ifndef YYDEBUG +# define YYDEBUG 0 +#endif + +enum sudoers_formats { + format_ldif, + format_sudoers +}; + +/* + * Function Prototypes + */ +static void dump_sudoers(void); +static void set_runaspw(struct sudoers_context *ctx, const char *); +static void set_runasgr(struct sudoers_context *ctx, const char *); +static int testsudoers_error(const char * restrict buf); +static int testsudoers_output(const char * restrict buf); +sudo_noreturn static void usage(void); +static void cb_lookup(const struct sudoers_parse_tree *parse_tree, const struct userspec *us, int user_match, const struct privilege *priv, int host_match, const struct cmndspec *cs, int date_match, int runas_match, int cmnd_match, void *closure); +static int testsudoers_query(struct sudoers_context *ctx, const struct sudo_nss *nss, struct passwd *pw); + +/* + * Globals + */ +static const char *orig_cmnd; +static char *runas_group, *runas_user; + +#if defined(SUDO_DEVEL) && defined(__OpenBSD__) +extern char *malloc_options; +#endif + +sudo_dso_public int main(int argc, char *argv[]); + +int +main(int argc, char *argv[]) +{ + struct sudoers_context test_ctx = SUDOERS_CONTEXT_INITIALIZER; + struct sudo_nss_list snl = TAILQ_HEAD_INITIALIZER(snl); + enum sudoers_formats input_format = format_sudoers; + struct sudo_nss testsudoers_nss; + char *p, *grfile, *pwfile, *shells; + const char *host = NULL; + const char *errstr; + int ch, dflag, exitcode = EXIT_FAILURE; + unsigned int validated; + int status = FOUND; + int pwflag = 0; + char cwdbuf[PATH_MAX]; + time_t now; + id_t id; + debug_decl(main, SUDOERS_DEBUG_MAIN); + +#if defined(SUDO_DEVEL) && defined(__OpenBSD__) + malloc_options = "S"; +#endif +#if YYDEBUG + sudoersdebug = 1; +#endif + + initprogname(argc > 0 ? argv[0] : "testsudoers"); + + if (!sudoers_initlocale(setlocale(LC_ALL, ""), def_sudoers_locale)) + sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory")); + sudo_warn_set_locale_func(sudoers_warn_setlocale); + bindtextdomain("sudoers", LOCALEDIR); /* XXX - should have own domain */ + textdomain("sudoers"); + time(&now); + + /* Initialize the debug subsystem. */ + if (sudo_conf_read(NULL, SUDO_CONF_DEBUG) == -1) + goto done; + if (!sudoers_debug_register(getprogname(), sudo_conf_debug_files(getprogname()))) + goto done; + + dflag = 0; + grfile = pwfile = shells = NULL; + test_ctx.mode = MODE_RUN; + while ((ch = getopt(argc, argv, "+D:dg:G:h:i:L:lP:p:R:S:T:tu:U:v")) != -1) { + switch (ch) { + case 'D': + test_ctx.runas.cwd = optarg; + break; + case 'd': + dflag = 1; + break; + case 'G': + id = sudo_strtoid(optarg, &errstr); + if (errstr != NULL) + sudo_fatalx("group-ID %s: %s", optarg, errstr); + test_ctx.parser_conf.sudoers_gid = (gid_t)id; + break; + case 'g': + runas_group = optarg; + SET(test_ctx.settings.flags, RUNAS_GROUP_SPECIFIED); + break; + case 'h': + host = optarg; + break; + case 'i': + if (strcasecmp(optarg, "ldif") == 0) { + input_format = format_ldif; + } else if (strcasecmp(optarg, "sudoers") == 0) { + input_format = format_sudoers; + } else { + sudo_warnx(U_("unsupported input format %s"), optarg); + usage(); + } + break; + case 'L': + test_ctx.runas.list_pw = sudo_getpwnam(optarg); + if (test_ctx.runas.list_pw == NULL) { + sudo_warnx(U_("unknown user %s"), optarg); + usage(); + } + FALLTHROUGH; + case 'l': + if (test_ctx.mode != MODE_RUN) { + sudo_warnx( + "only one of the -l or -v flags may be specified"); + usage(); + } + test_ctx.mode = MODE_LIST; + pwflag = I_LISTPW; + orig_cmnd = "list"; + break; + case 'p': + pwfile = optarg; + break; + case 'P': + grfile = optarg; + break; + case 'S': + shells = optarg; + break; + case 'T': + now = parse_gentime(optarg); + if (now == -1) + sudo_fatalx("invalid time: %s", optarg); + break; + case 'R': + test_ctx.runas.chroot = optarg; + break; + case 't': + trace_print = testsudoers_error; + break; + case 'U': + id = sudo_strtoid(optarg, &errstr); + if (errstr != NULL) + sudo_fatalx("user-ID %s: %s", optarg, errstr); + test_ctx.parser_conf.sudoers_uid = (uid_t)id; + break; + case 'u': + runas_user = optarg; + SET(test_ctx.settings.flags, RUNAS_USER_SPECIFIED); + break; + case 'v': + if (test_ctx.mode != MODE_RUN) { + sudo_warnx( + "only one of the -l or -v flags may be specified"); + usage(); + } + test_ctx.mode = MODE_VALIDATE; + pwflag = I_VERIFYPW; + orig_cmnd = "validate"; + break; + default: + usage(); + /* NOTREACHED */ + } + } + argc -= optind; + argv += optind; + + if (grfile != NULL || pwfile != NULL || shells != NULL) { + /* Set group/passwd/shells file and init the cache. */ + if (grfile) + testsudoers_setgrfile(grfile); + if (pwfile) + testsudoers_setpwfile(pwfile); + if (shells) + testsudoers_setshellfile(shells); + + /* Use custom passwd/group backend. */ + sudo_pwutil_set_backend(testsudoers_make_pwitem, + testsudoers_make_gritem, testsudoers_make_gidlist_item, + testsudoers_make_grlist_item, testsudoers_valid_shell); + } + + if (argc < 2) { + /* No command or user specified. */ + if (dflag) { + orig_cmnd = "true"; + } else if (pwflag == 0) { + usage(); + } + test_ctx.user.name = strdup(argc ? *argv++ : "root"); + if (test_ctx.user.name == NULL) { + sudo_fatalx(U_("%s: %s"), __func__, + U_("unable to allocate memory")); + } + argc = 0; + } else { + if (argc > 2 && test_ctx.mode == MODE_LIST) + test_ctx.mode = MODE_CHECK; + test_ctx.user.name = strdup(*argv++); + if (test_ctx.user.name == NULL) { + sudo_fatalx(U_("%s: %s"), __func__, + U_("unable to allocate memory")); + } + argc--; + if (orig_cmnd == NULL) { + orig_cmnd = *argv++; + argc--; + } + } + test_ctx.user.cmnd = strdup(orig_cmnd); + if (test_ctx.user.cmnd == NULL) + sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory")); + test_ctx.user.cmnd_base = sudo_basename(test_ctx.user.cmnd); + + if (getcwd(cwdbuf, sizeof(cwdbuf)) == NULL) + strlcpy(cwdbuf, "/", sizeof(cwdbuf)); + test_ctx.user.cwd = strdup(cwdbuf); + if (test_ctx.user.cwd == NULL) + sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory")); + + if ((test_ctx.user.pw = sudo_getpwnam(test_ctx.user.name)) == NULL) + sudo_fatalx(U_("unknown user %s"), test_ctx.user.name); + test_ctx.user.uid = test_ctx.user.pw->pw_uid; + test_ctx.user.gid = test_ctx.user.pw->pw_gid; + + if (!sudoers_sethost(&test_ctx, host, NULL)) + goto done; + + /* Fill in test_ctx.user.cmnd_args from argv. */ + if (argc > 0) { + size_t n, size = 0; + char *cp; + int i; + + for (i = 0; i < argc; i++) + size += strlen(argv[i]) + 1; + + if ((test_ctx.user.cmnd_args = malloc(size)) == NULL) + sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory")); + for (cp = test_ctx.user.cmnd_args, i = 0; i < argc; i++) { + n = strlcpy(cp, argv[i], size - (size_t)(cp - test_ctx.user.cmnd_args)); + if (n >= size - (size_t)(cp - test_ctx.user.cmnd_args)) + sudo_fatalx(U_("internal error, %s overflow"), getprogname()); + cp += n; + *cp++ = ' '; + } + *--cp = '\0'; + } + + /* Initialize default values. */ + if (!init_defaults()) + sudo_fatalx("%s", U_("unable to initialize sudoers default values")); + + /* Set group_plugin callback. */ + sudo_defs_table[I_GROUP_PLUGIN].callback = cb_group_plugin; + + /* Set runas callback. */ + sudo_defs_table[I_RUNAS_DEFAULT].callback = cb_runas_default; + + /* Set locale callback. */ + sudo_defs_table[I_SUDOERS_LOCALE].callback = sudoers_locale_callback; + + /* Load ip addr/mask for each interface. */ + if (get_net_ifs(&p) > 0) { + if (!set_interfaces(p)) + sudo_fatal("%s", U_("unable to parse network address list")); + free(p); + } + + /* Initialize the parser and set sudoers filename to "sudoers". */ + test_ctx.parser_conf.strict = true; + test_ctx.parser_conf.verbose = 2; + init_parser(&test_ctx, "sudoers"); + + /* + * Set runas passwd/group entries based on command line or sudoers. + * Note that if runas_group was specified without runas_user we + * run the command as the invoking user. + */ + if (runas_group != NULL) { + set_runasgr(&test_ctx, runas_group); + set_runaspw(&test_ctx, runas_user ? runas_user : test_ctx.user.name); + } else + set_runaspw(&test_ctx, runas_user ? runas_user : def_runas_default); + + /* Parse the policy file. */ + sudoers_setlocale(SUDOERS_LOCALE_SUDOERS, NULL); + switch (input_format) { + case format_ldif: + if (!sudoers_parse_ldif(&parsed_policy, stdin, NULL, true)) { + (void) puts("Parse error in LDIF"); + parse_error = true; + } + break; + case format_sudoers: + if (sudoersparse() != 0) + parse_error = true; + break; + default: + sudo_fatalx("error: unhandled input %d", input_format); + } + if (!update_defaults(&test_ctx, &parsed_policy, NULL, SETDEF_ALL, false)) + parse_error = true; + + if (!parse_error) + (void) puts("Parses OK"); + + if (dflag) { + (void) putchar('\n'); + dump_sudoers(); + if (argc < 2) { + exitcode = parse_error ? 1 : 0; + goto done; + } + } + + /* Fake up a minimal sudo nss list with the parsed policy. */ + TAILQ_INSERT_TAIL(&snl, &testsudoers_nss, entries); + testsudoers_nss.query = testsudoers_query; + testsudoers_nss.parse_tree = &parsed_policy; + + printf("\nEntries for user %s:\n", test_ctx.user.name); + validated = sudoers_lookup(&snl, &test_ctx, now, cb_lookup, NULL, + &status, pwflag); + + /* Validate user-specified chroot or cwd (if any) and runas user shell. */ + if (ISSET(validated, VALIDATE_SUCCESS)) { + if (!user_shell_valid(test_ctx.runas.pw)) { + printf(U_("\nInvalid shell for user %s: %s\n"), + test_ctx.runas.pw->pw_name, test_ctx.runas.pw->pw_shell); + CLR(validated, VALIDATE_SUCCESS); + SET(validated, VALIDATE_FAILURE); + } + if (check_user_runchroot(test_ctx.runas.chroot) != true) { + printf("\nUser %s is not allowed to change root directory to %s\n", + test_ctx.user.name, test_ctx.runas.chroot); + CLR(validated, VALIDATE_SUCCESS); + SET(validated, VALIDATE_FAILURE); + } + if (check_user_runcwd(test_ctx.runas.cwd) != true) { + printf("\nUser %s is not allowed to change directory to %s\n", + test_ctx.user.name, test_ctx.runas.cwd); + CLR(validated, VALIDATE_SUCCESS); + SET(validated, VALIDATE_FAILURE); + } + } + if (def_authenticate) { + puts(U_("\nPassword required")); + } + + /* + * Exit codes: + * 0 - parsed OK and command matched. + * 1 - parse error + * 2 - command not matched + * 3 - command denied + */ + if (parse_error || ISSET(validated, VALIDATE_ERROR)) { + puts(U_("\nParse error")); + exitcode = 1; + } else if (ISSET(validated, VALIDATE_SUCCESS)) { + puts(U_("\nCommand allowed")); + exitcode = 0; + } else if (ISSET(validated, VALIDATE_FAILURE)) { + puts(U_("\nCommand denied")); + exitcode = 3; + } else { + puts(U_("\nCommand unmatched")); + exitcode = 2; + } + +done: + sudoers_ctx_free(&test_ctx); + sudo_freepwcache(); + sudo_freegrcache(); + sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, exitcode); + return exitcode; +} + +static void +set_runaspw(struct sudoers_context *ctx, const char *user) +{ + struct passwd *pw = NULL; + debug_decl(set_runaspw, SUDOERS_DEBUG_UTIL); + + if (*user == '#') { + const char *errstr; + uid_t uid = sudo_strtoid(user + 1, &errstr); + if (errstr == NULL) { + if ((pw = sudo_getpwuid(uid)) == NULL) + pw = sudo_fakepwnam(user, ctx->user.gid); + } + } + if (pw == NULL) { + if ((pw = sudo_getpwnam(user)) == NULL) + sudo_fatalx(U_("unknown user %s"), user); + } + if (ctx->runas.pw != NULL) + sudo_pw_delref(ctx->runas.pw); + ctx->runas.pw = pw; + debug_return; +} + +static void +set_runasgr(struct sudoers_context *ctx, const char *group) +{ + struct group *gr = NULL; + debug_decl(set_runasgr, SUDOERS_DEBUG_UTIL); + + if (*group == '#') { + const char *errstr; + gid_t gid = sudo_strtoid(group + 1, &errstr); + if (errstr == NULL) { + if ((gr = sudo_getgrgid(gid)) == NULL) + gr = sudo_fakegrnam(group); + } + } + if (gr == NULL) { + if ((gr = sudo_getgrnam(group)) == NULL) + sudo_fatalx(U_("unknown group %s"), group); + } + if (ctx->runas.gr != NULL) + sudo_gr_delref(ctx->runas.gr); + ctx->runas.gr = gr; + debug_return; +} + +bool +cb_log_input(struct sudoers_context *ctx, const char *file, + int line, int column, const union sudo_defs_val *sd_un, int op) +{ + return true; +} + +bool +cb_log_output(struct sudoers_context *ctx, const char *file, + int line, int column, const union sudo_defs_val *sd_un, int op) +{ + return true; +} + +/* + * Callback for runas_default sudoers setting. + */ +bool +cb_runas_default(struct sudoers_context *ctx, const char *file, + int line, int column, const union sudo_defs_val *sd_un, int op) +{ + /* Only reset runaspw if user didn't specify one. */ + if (!runas_user && !runas_group) + set_runaspw(ctx, sd_un->str); + return true; +} + +bool +sudo_nss_can_continue(const struct sudo_nss *nss, int match) +{ + return true; +} + +void +sudo_setspent(void) +{ + return; +} + +void +sudo_endspent(void) +{ + return; +} + +FILE * +open_sudoers(const char *file, char **outfile, bool doedit, bool *keepopen) +{ + struct stat sb; + FILE *fp = NULL; + const char *base; + int error, fd; + debug_decl(open_sudoers, SUDOERS_DEBUG_UTIL); + + /* Report errors using the basename for consistent test output. */ + base = sudo_basename(file); + fd = sudo_secure_open_file(file, sudoers_file_uid(), sudoers_file_gid(), + &sb, &error); + if (fd != -1) { + if ((fp = fdopen(fd, "r")) == NULL) { + sudo_warn("unable to open %s", base); + close(fd); + } + } else { + switch (error) { + case SUDO_PATH_MISSING: + sudo_warn("unable to open %s", base); + break; + case SUDO_PATH_BAD_TYPE: + sudo_warnx("%s is not a regular file", base); + break; + case SUDO_PATH_WRONG_OWNER: + sudo_warnx("%s should be owned by uid %u", + base, (unsigned int) sudoers_file_uid()); + break; + case SUDO_PATH_WORLD_WRITABLE: + sudo_warnx("%s is world writable", base); + break; + case SUDO_PATH_GROUP_WRITABLE: + sudo_warnx("%s should be owned by gid %u", + base, (unsigned int) sudoers_file_gid()); + break; + default: + sudo_warnx("%s: internal error, unexpected error %d", + __func__, error); + break; + } + } + + debug_return_ptr(fp); +} + +bool +init_envtables(void) +{ + return(true); +} + +bool +set_perms(const struct sudoers_context *ctx, int perm) +{ + return true; +} + +bool +restore_perms(void) +{ + return true; +} + +void +init_eventlog_config(void) +{ + return; +} + +bool +pivot_root(const char *new_root, struct sudoers_pivot *state) +{ + return true; +} + +bool +unpivot_root(struct sudoers_pivot *state) +{ + return true; +} + +int +set_cmnd_path(struct sudoers_context *ctx, const char *runchroot) +{ + /* Reallocate test_ctx.user.cmnd to catch bugs in command_matches(). */ + char *new_cmnd = strdup(orig_cmnd); + if (new_cmnd == NULL) + return NOT_FOUND_ERROR; + free(ctx->user.cmnd); + ctx->user.cmnd = new_cmnd; + return FOUND; +} + +static void +cb_lookup(const struct sudoers_parse_tree *parse_tree, + const struct userspec *us, int user_match, const struct privilege *priv, + int host_match, const struct cmndspec *cs, int date_match, int runas_match, + int cmnd_match, void *closure) +{ + static const struct privilege *prev_priv; + struct sudo_lbuf lbuf; + + /* Only output info for the selected user. */ + if (user_match != ALLOW) { + prev_priv = NULL; + return; + } + + if (priv != prev_priv) { + /* No word wrap on output. */ + sudo_lbuf_init(&lbuf, testsudoers_output, 0, NULL, 0); + sudo_lbuf_append(&lbuf, "\n"); + sudoers_format_privilege(&lbuf, &parsed_policy, priv, false); + sudo_lbuf_print(&lbuf); + sudo_lbuf_destroy(&lbuf); + + printf("\thost %s\n", host_match == ALLOW ? "allowed" : + host_match == DENY ? "denied" : "unmatched"); + } + + if (host_match == ALLOW) { + if (date_match != UNSPEC) + printf("\tdate %s\n", date_match == ALLOW ? "allowed" : "denied"); + if (date_match != DENY) { + printf("\trunas %s\n", runas_match == ALLOW ? "allowed" : + runas_match == DENY ? "denied" : "unmatched"); + if (runas_match == ALLOW) { + printf("\tcmnd %s\n", cmnd_match == ALLOW ? "allowed" : + cmnd_match == DENY ? "denied" : "unmatched"); + } + } + } + + prev_priv = priv; +} + +static int +testsudoers_query(struct sudoers_context *ctx, const struct sudo_nss *nss, + struct passwd *pw) +{ + /* Nothing to do. */ + return 0; +} + +static bool +print_defaults(struct sudo_lbuf *lbuf) +{ + struct defaults *def, *next; + debug_decl(print_defaults, SUDOERS_DEBUG_UTIL); + + TAILQ_FOREACH_SAFE(def, &parsed_policy.defaults, entries, next) + sudoers_format_default_line(lbuf, &parsed_policy, def, &next, false); + + debug_return_bool(!sudo_lbuf_error(lbuf)); +} + +static int +print_alias(struct sudoers_parse_tree *parse_tree, struct alias *a, void *v) +{ + struct sudo_lbuf *lbuf = v; + struct member *m; + debug_decl(print_alias, SUDOERS_DEBUG_UTIL); + + sudo_lbuf_append(lbuf, "%s %s = ", alias_type_to_string(a->type), + a->name); + TAILQ_FOREACH(m, &a->members, entries) { + if (m != TAILQ_FIRST(&a->members)) + sudo_lbuf_append(lbuf, ", "); + sudoers_format_member(lbuf, parse_tree, m, NULL, UNSPEC); + } + sudo_lbuf_append(lbuf, "\n"); + + debug_return_int(sudo_lbuf_error(lbuf) ? -1 : 0); +} + +static bool +print_aliases(struct sudo_lbuf *lbuf) +{ + debug_decl(print_aliases, SUDOERS_DEBUG_UTIL); + + alias_apply(&parsed_policy, print_alias, lbuf); + + debug_return_bool(!sudo_lbuf_error(lbuf)); +} + +static void +dump_sudoers(void) +{ + struct sudo_lbuf lbuf; + debug_decl(dump_sudoers, SUDOERS_DEBUG_UTIL); + + /* No word wrap on output. */ + sudo_lbuf_init(&lbuf, testsudoers_output, 0, NULL, 0); + + /* Print Defaults */ + if (!print_defaults(&lbuf)) + goto done; + if (lbuf.len > 0) { + sudo_lbuf_print(&lbuf); + sudo_lbuf_append(&lbuf, "\n"); + } + + /* Print Aliases */ + if (!print_aliases(&lbuf)) + goto done; + if (lbuf.len > 1) { + sudo_lbuf_print(&lbuf); + sudo_lbuf_append(&lbuf, "\n"); + } + + /* Print User_Specs */ + if (!sudoers_format_userspecs(&lbuf, &parsed_policy, NULL, false, true)) + goto done; + if (lbuf.len > 1) { + sudo_lbuf_print(&lbuf); + } + +done: + if (sudo_lbuf_error(&lbuf)) { + if (errno == ENOMEM) + sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory")); + } + sudo_lbuf_destroy(&lbuf); + + debug_return; +} + +static int +testsudoers_output(const char * restrict buf) +{ + return fputs(buf, stdout); +} + +static int +testsudoers_error(const char *restrict buf) +{ + return fputs(buf, stderr); +} + +sudo_noreturn static void +usage(void) +{ + (void) fprintf(stderr, "usage: %s [-dltv] [-G sudoers_gid] [-g group] [-h host] [-i input_format] [-L list_user] [-P grfile] [-p pwfile] [-S shells] [-U sudoers_uid] [-u user] <user> <command> [args]\n", getprogname()); + exit(EXIT_FAILURE); +} |