Adding upstream version 1.9.15p5.upstream/1.9.15p5upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 518 insertions, 0 deletions

diff --git a/plugins/sudoers/sudoers.h b/plugins/sudoers/sudoers.h
new file mode 100644
index 0000000..c7f386b
--- /dev/null
+++ b/plugins/sudoers/sudoers.h
@@ -0,0 +1,518 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1993-1996, 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.
+ */
+
+#ifndef SUDOERS_SUDOERS_H
+#define SUDOERS_SUDOERS_H
+
+#include <sys/types.h>		/* for gid_t, mode_t, pid_t, size_t, uid_t */
+#include <limits.h>
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# include <compat/stdbool.h>
+#endif /* HAVE_STDBOOL_H */
+
+#define DEFAULT_TEXT_DOMAIN	"sudoers"
+
+#include <pathnames.h>
+#include <sudo_compat.h>
+#include <sudo_conf.h>
+#include <sudo_eventlog.h>
+#include <sudo_fatal.h>
+#include <sudo_gettext.h>
+#include <sudo_nss.h>
+#include <sudo_plugin.h>
+#include <sudo_queue.h>
+#include <sudo_util.h>
+#include <sudoers_debug.h>
+
+#include <defaults.h>
+#include <logging.h>
+#include <parse.h>
+#include <pivot.h>
+
+/*
+ * Info passed in from the sudo front-end.
+ */
+struct sudoers_open_info {
+    char * const *settings;
+    char * const *user_info;
+    char * const *plugin_args;
+};
+
+/*
+ * Supplementary group IDs for a user.
+ */
+struct gid_list {
+    int ngids;
+    GETGROUPS_T *gids;
+};
+
+/*
+ * Supplementary group names for a user.
+ */
+struct group_list {
+    int ngroups;
+    char **groups;
+};
+
+/*
+ * Parse configuration settings.
+ */
+struct sudoers_parser_config {
+    const char *sudoers_path;
+    int strict;
+    int verbose;
+    bool recovery;
+    bool ignore_perms;
+    mode_t sudoers_mode;
+    uid_t sudoers_uid;
+    gid_t sudoers_gid;
+};
+#define SUDOERS_PARSER_CONFIG_INITIALIZER {				\
+    .sudoers_path = NULL,						\
+    .strict = false,							\
+    .verbose = 1,							\
+    .recovery = true,							\
+    .ignore_perms = false,						\
+    .sudoers_mode = SUDOERS_MODE,					\
+    .sudoers_uid = SUDOERS_UID,						\
+    .sudoers_gid = SUDOERS_GID						\
+}
+
+/*
+ * Settings passed in from the sudo front-end.
+ */
+struct sudoers_plugin_settings {
+    const char *plugin_dir;
+    const char *ldap_conf;
+    const char *ldap_secret;
+    unsigned int flags;
+};
+#define SUDOERS_PLUGIN_SETTINGS_INITIALIZER {				\
+    .plugin_dir = _PATH_SUDO_PLUGIN_DIR,				\
+    .ldap_conf = _PATH_LDAP_CONF,					\
+    .ldap_secret = _PATH_LDAP_SECRET					\
+}
+
+/*
+ * Info pertaining to the invoking user.
+ */
+struct sudoers_user_context {
+    struct passwd *pw;
+    struct stat *cmnd_stat;
+    char *cwd;
+    char *name;
+    char *path;
+    char *tty;
+    char *ttypath;
+    char *host;
+    char *shost;
+    char *prompt;
+    char *cmnd;
+    char *cmnd_args;
+    char *cmnd_base;
+    char *cmnd_dir;
+    char *cmnd_list;
+    char *ccname;
+    struct gid_list *gid_list;
+    char * const * envp;
+    char * const * env_add;
+    int   closefrom;
+    int   lines;
+    int   cols;
+    int   timeout;
+    mode_t umask;
+    uid_t euid;
+    uid_t uid;
+    uid_t egid;
+    uid_t gid;
+    pid_t pid;
+    pid_t ppid;
+    pid_t sid;
+    pid_t tcpgid;
+};
+
+/*
+ * Info pertaining to the runas user.
+ */
+struct sudoers_runas_context {
+    int execfd;
+    int argc;
+    char **argv;
+    char **argv_saved;
+    struct passwd *pw;
+    struct group *gr;
+    struct passwd *list_pw;
+    char *chroot;
+    char *class;
+    char *cmnd;
+    char *cmnd_saved;
+    char *cwd;
+    char *group;
+    char *host;
+    char *shost;
+    char *user;
+#ifdef HAVE_SELINUX
+    char *role;
+    char *type;
+#endif
+#ifdef HAVE_APPARMOR
+    char *apparmor_profile;
+#endif
+#ifdef HAVE_PRIV_SET
+    char *privs;
+    char *limitprivs;
+#endif
+};
+
+/*
+ * Global configuration for the sudoers module.
+ */
+struct sudoers_context {
+    struct sudoers_parser_config parser_conf;
+    struct sudoers_plugin_settings settings;
+    struct sudoers_user_context user;
+    struct sudoers_runas_context runas;
+    struct timespec submit_time;
+    char *source;
+    char *iolog_file;
+    char *iolog_dir;
+    char *iolog_path;
+    int sudoedit_nfiles;
+    unsigned int mode;
+    char uuid_str[37];
+};
+#define SUDOERS_CONTEXT_INITIALIZER {					\
+    SUDOERS_PARSER_CONFIG_INITIALIZER,					\
+    SUDOERS_PLUGIN_SETTINGS_INITIALIZER,				\
+}
+
+/*
+ * sudo_get_gidlist() type values
+ */
+#define ENTRY_TYPE_ANY		0x00
+#define ENTRY_TYPE_QUERIED	0x01
+#define ENTRY_TYPE_FRONTEND	0x02
+
+/*
+ * sudoers_plugin_settings.flag values
+ */
+#define RUNAS_USER_SPECIFIED	0x01U
+#define RUNAS_GROUP_SPECIFIED	0x02U
+#define CAN_INTERCEPT_SETID	0x04U
+#define HAVE_INTERCEPT_PTRACE	0x08U
+#define USER_INTERCEPT_SETID	0x10U
+
+/*
+ * Return values for sudoers_lookup(), also used as arguments for log_auth()
+ * Note: cannot use '0' as a value here.
+ */
+#define VALIDATE_ERROR		0x001U
+#define VALIDATE_SUCCESS	0x002U
+#define VALIDATE_FAILURE	0x004U
+#define FLAG_CHECK_USER		0x010U
+#define FLAG_NO_USER		0x020U
+#define FLAG_NO_HOST		0x040U
+#define FLAG_NO_CHECK		0x080U
+#define FLAG_NO_USER_INPUT	0x100U
+#define FLAG_BAD_PASSWORD	0x200U
+#define FLAG_INTERCEPT_SETID	0x400U
+
+/*
+ * Return values for check_user() (rowhammer resistant).
+ */
+#undef AUTH_SUCCESS
+#define AUTH_SUCCESS		0x52a2925	/* 0101001010100010100100100101 */
+#undef AUTH_FAILURE
+#define AUTH_FAILURE		0xad5d6da	/* 1010110101011101011011011010 */
+#undef AUTH_ERROR
+#define AUTH_ERROR		0x1fc8d3ac	/* 11111110010001101001110101100 */
+
+/*
+ * find_path()/set_cmnd() return values
+ */
+#define FOUND			0
+#define NOT_FOUND		1
+#define NOT_FOUND_DOT		2
+#define NOT_FOUND_ERROR		3
+#define NOT_FOUND_PATH		4
+
+/*
+ * Various modes sudo can be in (based on arguments) in hex
+ */
+#define MODE_RUN		0x00000001U
+#define MODE_EDIT		0x00000002U
+#define MODE_VALIDATE		0x00000004U
+#define MODE_INVALIDATE		0x00000008U
+#define MODE_VERSION		0x00000010U
+#define MODE_HELP		0x00000020U
+#define MODE_LIST		0x00000040U
+#define MODE_CHECK		0x00000080U
+#define MODE_ERROR		0x00000100U
+#define MODE_MASK		0x0000ffffU
+
+/* Mode flags */
+#define MODE_ASKPASS		0x00010000U
+#define MODE_SHELL		0x00020000U
+#define MODE_LOGIN_SHELL	0x00040000U
+#define MODE_IMPLIED_SHELL	0x00080000U
+#define MODE_RESET_HOME		0x00100000U
+#define MODE_PRESERVE_GROUPS	0x00200000U
+#define MODE_PRESERVE_ENV	0x00400000U
+#define MODE_NONINTERACTIVE	0x00800000U
+#define MODE_IGNORE_TICKET	0x01000000U
+#define MODE_UPDATE_TICKET	0x02000000U
+#define MODE_POLICY_INTERCEPTED	0x04000000U
+
+/* Mode bits allowed for intercepted commands. */
+#define MODE_INTERCEPT_MASK	(MODE_RUN|MODE_NONINTERACTIVE|MODE_IGNORE_TICKET|MODE_POLICY_INTERCEPTED)
+
+/*
+ * Used with set_perms()
+ */
+#define PERM_INITIAL		0x00
+#define PERM_ROOT		0x01
+#define PERM_USER		0x02
+#define PERM_FULL_USER		0x03
+#define PERM_SUDOERS		0x04
+#define PERM_RUNAS		0x05
+#define PERM_TIMESTAMP		0x06
+#define PERM_IOLOG		0x07
+
+/* Default sudoers uid/gid/mode if not set by the Makefile. */
+#ifndef SUDOERS_UID
+# define SUDOERS_UID	0
+#endif
+#ifndef SUDOERS_GID
+# define SUDOERS_GID	0
+#endif
+#ifndef SUDOERS_MODE
+# define SUDOERS_MODE	0600
+#endif
+
+struct sudo_lbuf;
+struct passwd;
+struct stat;
+struct timespec;
+
+/*
+ * Function prototypes
+ */
+/* goodpath.c */
+bool sudo_goodpath(const char *path, struct stat *sbp);
+
+/* findpath.c */
+int find_path(const char *infile, char **outfile, struct stat *sbp,
+    const char *path, bool ignore_dot, char * const *allowlist);
+
+/* resolve_cmnd.c */
+int resolve_cmnd(struct sudoers_context *ctx, const char *infile,
+    char **outfile, const char *path);
+
+/* check.c */
+int check_user(struct sudoers_context *ctx, unsigned int validated, unsigned int mode);
+bool user_is_exempt(const struct sudoers_context *ctx);
+
+/* check_util.c */
+int check_user_runchroot(const char *runchroot);
+int check_user_runcwd(const char *runcwd);
+
+/* prompt.c */
+char *expand_prompt(const struct sudoers_context *ctx, const char *restrict old_prompt, const char *restrict auth_user);
+
+/* sudo_auth.c */
+bool sudo_auth_needs_end_session(void);
+int verify_user(const struct sudoers_context *ctx, struct passwd *pw, char *prompt, unsigned int validated, struct sudo_conv_callback *callback);
+int sudo_auth_begin_session(const struct sudoers_context *ctx, struct passwd *pw, char **user_env[]);
+int sudo_auth_end_session(void);
+int sudo_auth_init(const struct sudoers_context *ctx, struct passwd *pw, unsigned int mode);
+int sudo_auth_approval(const struct sudoers_context *ctx, struct passwd *pw, unsigned int validated, bool exempt);
+int sudo_auth_cleanup(const struct sudoers_context *ctx, struct passwd *pw, bool force);
+
+/* set_perms.c */
+bool rewind_perms(void);
+bool set_perms(const struct sudoers_context *, int);
+bool restore_perms(void);
+int pam_prep_user(struct passwd *);
+
+/* defaults.c */
+void dump_defaults(void);
+void dump_auth_methods(void);
+
+/* getspwuid.c */
+char *sudo_getepw(const struct passwd *);
+
+/* pwutil.c */
+typedef struct cache_item * (*sudo_make_pwitem_t)(uid_t uid, const char *user);
+typedef struct cache_item * (*sudo_make_gritem_t)(gid_t gid, const char *group);
+typedef struct cache_item * (*sudo_make_gidlist_item_t)(const struct passwd *pw, int ngids, GETGROUPS_T *gids, char * const *gidstrs, unsigned int type);
+typedef struct cache_item * (*sudo_make_grlist_item_t)(const struct passwd *pw, char * const *groups);
+typedef bool (*sudo_valid_shell_t)(const char *shell);
+sudo_dso_public struct group *sudo_getgrgid(gid_t);
+sudo_dso_public struct group *sudo_getgrnam(const char *);
+sudo_dso_public void sudo_gr_addref(struct group *);
+sudo_dso_public void sudo_gr_delref(struct group *);
+bool user_in_group(const struct passwd *, const char *);
+struct group *sudo_fakegrnam(const char *);
+struct group *sudo_mkgrent(const char *group, gid_t gid, ...);
+struct gid_list *sudo_get_gidlist(const struct passwd *pw, unsigned int type);
+struct group_list *sudo_get_grlist(const struct passwd *pw);
+struct passwd *sudo_fakepwnam(const char *, gid_t);
+struct passwd *sudo_mkpwent(const char *user, uid_t uid, gid_t gid, const char *home, const char *shell);
+struct passwd *sudo_getpwnam(const char *);
+struct passwd *sudo_getpwuid(uid_t);
+void sudo_endspent(void);
+void sudo_freegrcache(void);
+void sudo_freepwcache(void);
+void sudo_gidlist_addref(struct gid_list *);
+void sudo_gidlist_delref(struct gid_list *);
+void sudo_grlist_addref(struct group_list *);
+void sudo_grlist_delref(struct group_list *);
+void sudo_pw_addref(struct passwd *);
+void sudo_pw_delref(struct passwd *);
+int  sudo_set_gidlist(struct passwd *pw, int ngids, GETGROUPS_T *gids, char * const *gidstrs, unsigned int type);
+int  sudo_set_grlist(struct passwd *pw, char * const *groups);
+int  sudo_pwutil_get_max_groups(void);
+void sudo_pwutil_set_max_groups(int);
+void sudo_pwutil_set_backend(sudo_make_pwitem_t, sudo_make_gritem_t, sudo_make_gidlist_item_t, sudo_make_grlist_item_t, sudo_valid_shell_t);
+void sudo_setspent(void);
+bool user_shell_valid(const struct passwd *pw);
+
+/* timestr.c */
+char *get_timestr(time_t, int);
+
+/* boottime.c */
+bool get_boottime(struct timespec *);
+
+/* iolog.c */
+bool cb_maxseq(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+bool cb_iolog_user(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+bool cb_iolog_group(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+bool cb_iolog_mode(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+
+/* iolog_path_escapes.c */
+struct iolog_path_escape;
+extern const struct iolog_path_escape *sudoers_iolog_path_escapes;
+
+/* env.c */
+char **env_get(void);
+bool env_merge(const struct sudoers_context *ctx, char * const envp[]);
+bool env_swap_old(void);
+void env_free(void);
+bool env_init(char * const envp[]);
+bool init_envtables(void);
+bool insert_env_vars(char * const envp[]);
+bool read_env_file(const struct sudoers_context *ctx, const char *path, bool overwrite, bool restricted);
+bool rebuild_env(const struct sudoers_context *ctx);
+bool validate_env_vars(const struct sudoers_context *ctx, char * const envp[]);
+int sudo_setenv(const char *var, const char *val, int overwrite);
+int sudo_unsetenv(const char *var);
+char *sudo_getenv(const char *name);
+char *sudo_getenv_nodebug(const char *name);
+int sudo_putenv_nodebug(char *str, bool dupcheck, bool overwrite);
+int sudo_unsetenv_nodebug(const char *var);
+int sudoers_hook_getenv(const char *name, char **value, void *closure);
+int sudoers_hook_putenv(char *string, void *closure);
+int sudoers_hook_setenv(const char *name, const char *value, int overwrite, void *closure);
+int sudoers_hook_unsetenv(const char *name, void *closure);
+void register_env_file(void * (*ef_open)(const char *), void (*ef_close)(void *), char * (*ef_next)(void *, int *), bool sys);
+
+/* env_pattern.c */
+bool matches_env_pattern(const char *pattern, const char *var, bool *full_match);
+
+/* sudoers_cb.c */
+void set_callbacks(void);
+bool cb_log_input(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+bool cb_log_output(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+
+/* sudoers.c */
+FILE *open_sudoers(const char *, char **, bool, bool *);
+bool cb_runas_default(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+int set_cmnd_path(struct sudoers_context *ctx, const char *runchroot);
+void set_cmnd_status(struct sudoers_context *ctx, const char *runchroot);
+int sudoers_init(void *info, sudoers_logger_t logger, char * const envp[]);
+int sudoers_check_cmnd(int argc, char *const argv[], char *env_add[], void *closure);
+int sudoers_list(int argc, char *const argv[], const char *list_user, int verbose);
+int sudoers_validate_user(void);
+void sudoers_cleanup(void);
+bool sudoers_override_umask(void);
+const struct sudoers_context *sudoers_get_context(void);
+bool sudoers_set_mode(unsigned int flags, unsigned int mask);
+
+/* sudoers_ctx_free.c */
+void sudoers_ctx_free(struct sudoers_context *ctx);
+
+/* policy.c */
+unsigned int sudoers_policy_deserialize_info(struct sudoers_context *ctx, void *v, struct defaults_list *defaults);
+bool sudoers_policy_store_result(struct sudoers_context *ctx, bool accepted, char *argv[], char *envp[], mode_t cmnd_umask, char *iolog_path, void *v);
+bool sudoers_tty_present(struct sudoers_context *ctx);
+extern sudo_conv_t sudo_conv;
+extern sudo_printf_t sudo_printf;
+extern struct sudo_plugin_event * (*plugin_event_alloc)(void);
+
+/* group_plugin.c */
+void group_plugin_unload(void);
+int group_plugin_query(const char *user, const char *group,
+    const struct passwd *pwd);
+bool cb_group_plugin(struct sudoers_context *ctx, const char *file, int line, int column, const union sudo_defs_val *sd_un, int op);
+
+/* editor.c */
+char *find_editor(int nfiles, char * const *files, int *argc_out,
+    char ***argv_out, char * const *allowlist, const char **env_editor);
+
+/* exptilde.c */
+bool expand_tilde(char **path, const char *user);
+
+/* gc.c */
+enum sudoers_gc_types {
+    GC_UNKNOWN,
+    GC_VECTOR,
+    GC_PTR
+};
+bool sudoers_gc_add(enum sudoers_gc_types type, void *ptr);
+bool sudoers_gc_remove(enum sudoers_gc_types type, void *ptr);
+void sudoers_gc_init(void);
+void sudoers_gc_run(void);
+
+/* canon_path.c */
+char *canon_path(const char *inpath);
+void canon_path_free(char *resolved);
+void canon_path_free_cache(void);
+
+/* strlcpy_unesc.c */
+size_t strlcpy_unescape(char *restrict dst, const char *restrict src, size_t size);
+
+/* strvec_join.c */
+char *strvec_join(char *const argv[], char sep, size_t (*cpy)(char *, const char *, size_t));
+
+/* unesc_str.c */
+void unescape_string(char *str);
+
+/* serialize_list.c */
+char *serialize_list(const char *varname, struct list_members *members);
+
+/* sethost.c */
+bool sudoers_sethost(struct sudoers_context *ctx, const char *host, const char *remhost);
+
+#endif /* SUDOERS_SUDOERS_H */