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login: previous commit comment was wrong :)

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That commit added login script support.
Now _this commit_ is a style fix. Sorry....
This commit is contained in:
Denis Vlasenko 2006-09-08 17:25:04 +00:00
parent 2e502914b0
commit 942e4291fe
1 changed files with 133 additions and 131 deletions
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68
loginutils/login.c
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@ -35,11 +35,11 @@ static void setutmp(const char *name, const char *line);
static struct utmp utent; static struct utmp utent;
#endif #endif
// login defines enum {
#define TIMEOUT 60 TIMEOUT = 60,
#define EMPTY_USERNAME_COUNT 10 EMPTY_USERNAME_COUNT = 10,
#define USERNAME_SIZE 32 USERNAME_SIZE = 32,
};
static int check_nologin(int amroot); static int check_nologin(int amroot);
@ -86,7 +86,7 @@ int login_main(int argc, char **argv)
security_context_t user_sid = NULL; security_context_t user_sid = NULL;
#endif #endif
username[0]=0; username[0] = '\0';
amroot = (getuid() == 0); amroot = (getuid() == 0);
signal(SIGALRM, alarm_handler); signal(SIGALRM, alarm_handler);
alarm(TIMEOUT); alarm(TIMEOUT);
@ -119,7 +119,7 @@ int login_main(int argc, char **argv)
} }
} }
if (optind < argc) // user from command line (getty) if (optind < argc) /* user from command line (getty) */
safe_strncpy(username, argv[optind], USERNAME_SIZE); safe_strncpy(username, argv[optind], USERNAME_SIZE);
if (!isatty(0) || !isatty(1) || !isatty(2)) if (!isatty(0) || !isatty(1) || !isatty(2))
@ -139,7 +139,7 @@ int login_main(int argc, char **argv)
#ifdef CONFIG_FEATURE_UTMP #ifdef CONFIG_FEATURE_UTMP
if (amroot) if (amroot)
memset ( utent.ut_host, 0, sizeof utent.ut_host ); memset(utent.ut_host, 0, sizeof(utent.ut_host));
#endif #endif
if (opt_host) { if (opt_host) {
@ -167,7 +167,8 @@ int login_main(int argc, char **argv)
alarmstarted = 1; alarmstarted = 1;
} }
if (!( pw = getpwnam ( username ))) { pw = getpwnam(username);
if (!pw) {
pw_copy.pw_name = "UNKNOWN"; pw_copy.pw_name = "UNKNOWN";
pw_copy.pw_passwd = "!"; pw_copy.pw_passwd = "!";
opt_fflag = 0; opt_fflag = 0;
@ -206,7 +207,7 @@ auth_ok:
puts("Login incorrect"); puts("Login incorrect");
username[0] = 0; username[0] = 0;
if (++count == 3) { if (++count == 3) {
syslog ( LOG_WARNING, "invalid password for `%s'%s\n", pw->pw_name, fromhost); syslog(LOG_WARNING, "invalid password for `%s'%s'\n", pw->pw_name, fromhost);
return EXIT_FAILURE; return EXIT_FAILURE;
} }
} }
@ -225,28 +226,27 @@ auth_ok:
safe_strncpy(full_tty, tty, sizeof(full_tty)-1); safe_strncpy(full_tty, tty, sizeof(full_tty)-1);
#ifdef CONFIG_SELINUX #ifdef CONFIG_SELINUX
if (is_selinux_enabled()) if (is_selinux_enabled()) {
{
security_context_t old_tty_sid, new_tty_sid; security_context_t old_tty_sid, new_tty_sid;
if (get_default_context(username, NULL, &user_sid)) if (get_default_context(username, NULL, &user_sid)) {
{
fprintf(stderr, "Unable to get SID for %s\n", username); fprintf(stderr, "Unable to get SID for %s\n", username);
exit(1); exit(1);
} }
if (getfilecon(full_tty, &old_tty_sid) < 0) if (getfilecon(full_tty, &old_tty_sid) < 0) {
{ fprintf(stderr, "getfilecon(%.100s) failed: "
fprintf(stderr, "getfilecon(%.100s) failed: %.100s\n", full_tty, strerror(errno)); "%.100s\n", full_tty, strerror(errno));
return EXIT_FAILURE; return EXIT_FAILURE;
} }
if (security_compute_relabel(user_sid, old_tty_sid, SECCLASS_CHR_FILE, &new_tty_sid) != 0) if (security_compute_relabel(user_sid, old_tty_sid, SECCLASS_CHR_FILE,
{ &new_tty_sid) != 0) {
fprintf(stderr, "security_change_sid(%.100s) failed: %.100s\n", full_tty, strerror(errno)); fprintf(stderr, "security_change_sid(%.100s) failed: "
"%.100s\n", full_tty, strerror(errno));
return EXIT_FAILURE; return EXIT_FAILURE;
} }
if(setfilecon(full_tty, new_tty_sid) != 0) if (setfilecon(full_tty, new_tty_sid) != 0) {
{ fprintf(stderr, "chsid(%.100s, %s) failed: "
fprintf(stderr, "chsid(%.100s, %s) failed: %.100s\n", full_tty, new_tty_sid, strerror(errno)); "%.100s\n", full_tty, new_tty_sid, strerror(errno));
return EXIT_FAILURE; return EXIT_FAILURE;
} }
} }
@ -302,7 +302,6 @@ auth_ok:
} }
static int login_prompt(char *buf_name) static int login_prompt(char *buf_name)
{ {
char buf[1024]; char buf[1024];
@ -321,7 +320,7 @@ static int login_prompt ( char *buf_name )
for (sp = buf; isspace(*sp); sp++) { } for (sp = buf; isspace(*sp); sp++) { }
for (ep = sp; isgraph(*ep); ep++) { } for (ep = sp; isgraph(*ep); ep++) { }
*ep = 0; *ep = '\0';
safe_strncpy(buf_name, sp, USERNAME_SIZE); safe_strncpy(buf_name, sp, USERNAME_SIZE);
if (buf_name[0]) if (buf_name[0])
return 1; return 1;
@ -336,7 +335,8 @@ static int check_nologin ( int amroot )
FILE *fp; FILE *fp;
int c; int c;
if (( fp = fopen ( bb_path_nologin_file, "r" ))) { fp = fopen(bb_path_nologin_file, "r");
if (fp) {
while ((c = getc(fp)) != EOF) while ((c = getc(fp)) != EOF)
putchar((c=='\n') ? '\r' : c); putchar((c=='\n') ? '\r' : c);
@ -361,7 +361,8 @@ static int check_tty ( const char *tty )
int i; int i;
char buf[BUFSIZ]; char buf[BUFSIZ];
if (( fp = fopen ( bb_path_securetty_file, "r" ))) { fp = fopen(bb_path_securetty_file, "r");
if (fp) {
while (fgets(buf, sizeof(buf)-1, fp)) { while (fgets(buf, sizeof(buf)-1, fp)) {
for(i = strlen(buf)-1; i>=0; --i) { for(i = strlen(buf)-1; i>=0; --i) {
if (!isspace(buf[i])) if (!isspace(buf[i]))
@ -405,7 +406,8 @@ static void motd (void)
FILE *fp; FILE *fp;
int c; int c;
if (( fp = fopen ( bb_path_motd_file, "r" ))) { fp = fopen(bb_path_motd_file, "r");
if (fp) {
while ((c = getc(fp)) != EOF) while ((c = getc(fp)) != EOF)
putchar(c); putchar(c);
fclose(fp); fclose(fp);
@ -466,13 +468,13 @@ static void checkutmp(int picky)
} }
if (strncmp(line, "/dev/", 5) == 0) if (strncmp(line, "/dev/", 5) == 0)
line += 5; line += 5;
memset(&utent, 0, sizeof utent); memset(&utent, 0, sizeof(utent));
utent.ut_type = LOGIN_PROCESS; utent.ut_type = LOGIN_PROCESS;
utent.ut_pid = pid; utent.ut_pid = pid;
strncpy(utent.ut_line, line, sizeof utent.ut_line); strncpy(utent.ut_line, line, sizeof(utent.ut_line));
/* XXX - assumes /dev/tty?? */ /* XXX - assumes /dev/tty?? */
strncpy(utent.ut_id, utent.ut_line + 3, sizeof utent.ut_id); strncpy(utent.ut_id, utent.ut_line + 3, sizeof(utent.ut_id));
strncpy(utent.ut_user, "LOGIN", sizeof utent.ut_user); strncpy(utent.ut_user, "LOGIN", sizeof(utent.ut_user));
t_tmp = (time_t)utent.ut_time; t_tmp = (time_t)utent.ut_time;
time(&t_tmp); time(&t_tmp);
} }
@ -490,7 +492,7 @@ static void setutmp(const char *name, const char *line ATTRIBUTE_UNUSED)
time_t t_tmp = (time_t)utent.ut_time; time_t t_tmp = (time_t)utent.ut_time;
utent.ut_type = USER_PROCESS; utent.ut_type = USER_PROCESS;
strncpy(utent.ut_user, name, sizeof utent.ut_user); strncpy(utent.ut_user, name, sizeof(utent.ut_user));
time(&t_tmp); time(&t_tmp);
/* other fields already filled in by checkutmp above */ /* other fields already filled in by checkutmp above */
setutent(); setutent();