login: move check_securetty to libbb
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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c054822027
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@ -1481,6 +1481,11 @@ extern void selinux_or_die(void) FAST_FUNC;
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#define SETUP_ENV_NO_CHDIR (1 << 4)
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void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC;
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void nuke_str(char *str) FAST_FUNC;
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#if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM
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int check_securetty(const char *short_tty) FAST_FUNC;
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#else
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static ALWAYS_INLINE int check_securetty(const char *short_tty UNUSED_PARAM) { return 1; }
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#endif
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int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC;
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int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC;
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int ask_and_check_password(const struct passwd *pw) FAST_FUNC;
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@ -83,6 +83,7 @@ lib-y += safe_gethostname.o
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lib-y += safe_poll.o
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lib-y += safe_strncpy.o
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lib-y += safe_write.o
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lib-y += securetty.o
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lib-y += setup_environment.o
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lib-y += signals.o
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lib-y += simplify_path.o
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22
libbb/securetty.c
Normal file
22
libbb/securetty.c
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@ -0,0 +1,22 @@
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/* vi: set sw=4 ts=4: */
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/*
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* /etc/securetty checking.
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*
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* Licensed under GPLv2, see file LICENSE in this source tree.
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*/
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#include "libbb.h"
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int FAST_FUNC check_securetty(const char *short_tty)
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{
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char *buf = (char*)"/etc/securetty"; /* any non-NULL is ok */
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parser_t *parser = config_open2("/etc/securetty", fopen_for_read);
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while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
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if (strcmp(buf, short_tty) == 0)
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break;
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buf = NULL;
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}
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config_close(parser);
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/* buf != NULL here if config file was not found, empty
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* or line was found which equals short_tty */
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return buf != NULL;
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}
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@ -175,25 +175,6 @@ static void die_if_nologin(void)
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# define die_if_nologin() ((void)0)
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#endif
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#if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM
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static int check_securetty(const char *short_tty)
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{
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char *buf = (char*)"/etc/securetty"; /* any non-NULL is ok */
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parser_t *parser = config_open2("/etc/securetty", fopen_for_read);
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while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
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if (strcmp(buf, short_tty) == 0)
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break;
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buf = NULL;
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}
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config_close(parser);
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/* buf != NULL here if config file was not found, empty
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* or line was found which equals short_tty */
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return buf != NULL;
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}
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#else
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static ALWAYS_INLINE int check_securetty(const char *short_tty UNUSED_PARAM) { return 1; }
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#endif
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#if ENABLE_SELINUX
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static void initselinux(char *username, char *full_tty,
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security_context_t *user_sid)
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