emo/shadow
1
0
Fork 0
Code Issues Pull Requests Packages Releases Activity

* src/su.c: Extract command line processing from main().

Browse Source
This commit is contained in:
nekral-guest 2011-06-13 18:27:23 +00:00
parent 43e65fdd46
commit dbe0b96404
2 changed files with 96 additions and 94 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
ChangeLog
View File

@ -8,6 +8,7 @@
* src/su.c: Merge environment setting blocks after the creation of * src/su.c: Merge environment setting blocks after the creation of
the session. the session.
* src/su.c: Close the password databases together with syslog. * src/su.c: Close the password databases together with syslog.
* src/su.c: Extract command line processing from main().
2011-06-10 Nicolas François <nicolas.francois@centraliens.net> 2011-06-10 Nicolas François <nicolas.francois@centraliens.net>

105
src/su.c
View File

@ -75,15 +75,19 @@
* Global variables * Global variables
*/ */
const char *Prog; const char *Prog;
const char *caller_tty = NULL; /* Name of tty SU is run from */ static const char *caller_tty = NULL; /* Name of tty SU is run from */
bool caller_is_root = false; static bool caller_is_root = false;
uid_t caller_uid; static uid_t caller_uid;
#ifndef USE_PAM #ifndef USE_PAM
int caller_on_console = 0; static int caller_on_console = 0;
#ifdef SU_ACCESS #ifdef SU_ACCESS
char *caller_pass; static char *caller_pass;
#endif #endif
#endif /* !USE_PAM */ #endif /* !USE_PAM */
static bool doshell = false;
static bool fakelogin = false;
static char *shellstr = NULL;
static char *command = NULL;
/* not needed by sulog.c anymore */ /* not needed by sulog.c anymore */
@ -91,7 +95,7 @@ static char name[BUFSIZ];
static char caller_name[BUFSIZ]; static char caller_name[BUFSIZ];
/* If nonzero, change some environment vars to indicate the user su'd to. */ /* If nonzero, change some environment vars to indicate the user su'd to. */
static bool change_environment; static bool change_environment = true;
#ifdef USE_PAM #ifdef USE_PAM
static pam_handle_t *pamh = NULL; static pam_handle_t *pamh = NULL;
@ -121,11 +125,12 @@ static bool iswheel (const char *);
#endif /* !USE_PAM */ #endif /* !USE_PAM */
static struct passwd * check_perms (void); static struct passwd * check_perms (void);
#ifdef USE_PAM #ifdef USE_PAM
static void check_perms_pam (struct passwd *pw) static void check_perms_pam (struct passwd *pw);
#else /* !USE_PAM */ #else /* !USE_PAM */
static void check_perms_nopam (struct passwd *pw); static void check_perms_nopam (struct passwd *pw);
#endif /* !USE_PAM */ #endif /* !USE_PAM */
static void save_caller_context (char **argv); static void save_caller_context (char **argv);
static void process_flags (int argc, char **argv);
#ifndef USE_PAM #ifndef USE_PAM
/* /*
@ -590,7 +595,7 @@ static struct passwd * check_perms (void)
#ifdef USE_PAM #ifdef USE_PAM
check_perms_pam (pw); check_perms_pam (pw);
#else /* !USE_PAM */ #else /* !USE_PAM */
check_perms_pam (pw); check_perms_nopam (pw);
#endif /* !USE_PAM */ #endif /* !USE_PAM */
(void) signal (SIGINT, SIG_DFL); (void) signal (SIGINT, SIG_DFL);
(void) signal (SIGQUIT, SIG_DFL); (void) signal (SIGQUIT, SIG_DFL);
@ -685,48 +690,14 @@ static void save_caller_context (char **argv)
} }
/* /*
* su - switch user id * process_flags - Process the command line arguments
* *
* su changes the user's ids to the values for the specified user. if * process_flags() interprets the command line arguments and sets
* no new user name is specified, "root" or UID 0 is used by default. * the values that the user will be created with accordingly. The
* * values are checked for sanity.
* Any additional arguments are passed to the user's shell. In
* particular, the argument "-c" will cause the next argument to be
* interpreted as a command by the common shell programs.
*/ */
int main (int argc, char **argv) static void process_flags (int argc, char **argv)
{ {
const char *cp;
bool doshell = false;
bool fakelogin = false;
struct passwd *pw = NULL;
char *shellstr = NULL;
char *command = NULL;
#ifdef USE_PAM
int ret;
#else /* !USE_PAM */
int err = 0;
#endif /* !USE_PAM */
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
change_environment = true;
save_caller_context (argv);
OPENLOG ("su");
/*
* Process the command line arguments.
*/
{
/*
* Parse the command line options.
*/
int option_index = 0; int option_index = 0;
int c; int c;
static struct option long_options[] = { static struct option long_options[] = {
@ -738,8 +709,7 @@ int main (int argc, char **argv)
{NULL, 0, NULL, '\0'} {NULL, 0, NULL, '\0'}
}; };
while ((c = while ((c = getopt_long (argc, argv, "c:hlmps:", long_options,
getopt_long (argc, argv, "c:hlmps:", long_options,
&option_index)) != -1) { &option_index)) != -1) {
switch (c) { switch (c) {
case 'c': case 'c':
@ -775,9 +745,6 @@ int main (int argc, char **argv)
optind++; optind++;
} }
} }
}
initenv ();
/* /*
* The next argument must be either a user ID, or some flag to a * The next argument must be either a user ID, or some flag to a
@ -809,6 +776,40 @@ int main (int argc, char **argv)
if (NULL != command) { if (NULL != command) {
doshell = false; doshell = false;
} }
}
/*
* su - switch user id
*
* su changes the user's ids to the values for the specified user. if
* no new user name is specified, "root" or UID 0 is used by default.
*
* Any additional arguments are passed to the user's shell. In
* particular, the argument "-c" will cause the next argument to be
* interpreted as a command by the common shell programs.
*/
int main (int argc, char **argv)
{
const char *cp;
struct passwd *pw = NULL;
#ifdef USE_PAM
int ret;
#else /* !USE_PAM */
int err = 0;
#endif /* !USE_PAM */
(void) setlocale (LC_ALL, "");
(void) bindtextdomain (PACKAGE, LOCALEDIR);
(void) textdomain (PACKAGE);
save_caller_context (argv);
OPENLOG ("su");
process_flags (argc, argv);
initenv ();
#ifdef USE_PAM #ifdef USE_PAM
ret = pam_start ("su", name, &conv, &pamh); ret = pam_start ("su", name, &conv, &pamh);