/*
* Register the specified debug files and program with the
* debug subsystem, freeing the debug list when done.
* Sets the active debug instance as a side effect.
*/
bool
sudoers_debug_register(const char *program,
struct sudo_conf_debug_file_list *debug_files)
{
struct sudo_debug_file *debug_file, *debug_next;
/* Already initialized? */
if (sudoers_debug_instance != SUDO_DEBUG_INSTANCE_INITIALIZER) {
sudo_debug_set_active_instance(sudoers_debug_instance);
}
/* Setup debugging if indicated. */
if (debug_files != NULL && !TAILQ_EMPTY(debug_files)) {
if (program != NULL) {
sudoers_debug_instance = sudo_debug_register(program,
sudoers_subsystem_names, sudoers_subsystem_ids, debug_files);
if (sudoers_debug_instance == SUDO_DEBUG_INSTANCE_ERROR)
return false;
}
TAILQ_FOREACH_SAFE(debug_file, debug_files, entries, debug_next) {
TAILQ_REMOVE(debug_files, debug_file, entries);
free(debug_file->debug_file);
free(debug_file->debug_flags);
free(debug_file);
}
}
/*
* Exit codes defined in sudo_exec.h:
* SESH_SUCCESS (0) ... successful operation
* SESH_ERR_FAILURE (1) ... unspecified error
* SESH_ERR_INVALID (30) ... invalid -e arg value
* SESH_ERR_BAD_PATHS (31) ... odd number of paths
* SESH_ERR_NO_FILES (32) ... copy error, no files copied
* SESH_ERR_SOME_FILES (33) ... copy error, no files copied
*/
int
main(int argc, char *argv[], char *envp[])
{
int ret;
debug_decl(main, SUDO_DEBUG_MAIN)
initprogname(argc > 0 ? argv[0] : "sesh");
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE_NAME, LOCALEDIR);
textdomain(PACKAGE_NAME);
if (argc < 2)
sudo_fatalx(U_("requires at least one argument"));
/* Read sudo.conf and initialize the debug subsystem. */
if (sudo_conf_read(NULL, SUDO_CONF_DEBUG) == -1)
exit(EXIT_FAILURE);
sudo_debug_register(getprogname(), NULL, NULL,
sudo_conf_debug_files(getprogname()));
if (strcmp(argv[1], "-e") == 0) {
ret = sesh_sudoedit(argc, argv);
} else {
bool login_shell, noexec = false;
char *cp, *cmnd;
int fd = -1;
/* If the first char of argv[0] is '-', we are running a login shell. */
login_shell = argv[0][0] == '-';
/* If argv[0] ends in -noexec, pass the flag to sudo_execve() */
if ((cp = strrchr(argv[0], '-')) != NULL && cp != argv[0])
noexec = strcmp(cp, "-noexec") == 0;
/* If argv[1] is --execfd=%d, extract the fd to exec with. */
if (strncmp(argv[1], "--execfd=", 9) == 0) {
const char *errstr;
cp = argv[1] + 9;
fd = strtonum(cp, 0, INT_MAX, &errstr);
if (errstr != NULL)
sudo_fatalx(U_("invalid file descriptor number: %s"), cp);
argv++;
argc--;
}
/* Shift argv and make a copy of the command to execute. */
argv++;
argc--;
if ((cmnd = strdup(argv[0])) == NULL)
sudo_fatalx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
/* If invoked as a login shell, modify argv[0] accordingly. */
if (login_shell) {
if ((cp = strrchr(argv[0], '/')) == NULL)
sudo_fatal(U_("unable to run %s as a login shell"), argv[0]);
*cp = '-';
argv[0] = cp;
}
sudo_execve(fd, cmnd, argv, envp, noexec);
sudo_warn(U_("unable to execute %s"), cmnd);
ret = SESH_ERR_FAILURE;
}
sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, ret);
_exit(ret);
}
