termux-packages/packages/cronie/single-user-mode.patch

diff -uNr cronie-1.5.7/src/cron.c cronie-1.5.7.mod/src/cron.c
--- cronie-1.5.7/src/cron.c	2021-01-22 11:29:39.000000000 +0000
+++ cronie-1.5.7.mod/src/cron.c	2021-05-03 18:37:15.040789324 +0000
@@ -184,7 +184,9 @@
 	fprintf(stderr, " -n         run in foreground\n");
 	fprintf(stderr, " -p         permit any crontab\n");
 	fprintf(stderr, " -P         use PATH=\"%s\"\n", _PATH_DEFPATH);
+#ifndef __ANDROID__
 	fprintf(stderr, " -c         enable clustering support\n");
+#endif
 	fprintf(stderr, " -s         log into syslog instead of sending mails\n");
 	fprintf(stderr, " -V         print version and exit\n");
 	fprintf(stderr, " -x <flag>  print debug information\n");
@@ -689,7 +691,7 @@
 static void parse_args(int argc, char *argv[]) {
 	int argch;
 
-	while (-1 != (argch = getopt(argc, argv, "hnpsiPx:m:cV"))) {
+	while (-1 != (argch = getopt(argc, argv, "hnpsiPx:m:V"))) {
 		switch (argch) {
 			case 'x':
 				if (!set_debug_flags(optarg))
@@ -713,9 +715,11 @@
 			case 'm':
 				strncpy(MailCmd, optarg, MAX_COMMAND);
 				break;
+#ifndef __ANDROID__
 			case 'c':
 				EnableClustering = 1;
 				break;
+#endif
 			case 'V':
 				puts(PACKAGE_STRING);
 				exit(EXIT_SUCCESS);
diff -uNr cronie-1.5.7/src/crontab.c cronie-1.5.7.mod/src/crontab.c
--- cronie-1.5.7/src/crontab.c	2021-03-19 10:15:42.000000000 +0000
+++ cronie-1.5.7.mod/src/crontab.c	2021-05-03 18:40:24.992789931 +0000
@@ -81,15 +81,15 @@
 };
 
 # ifdef WITH_SELINUX
-static const char *getoptargs = "u:lerisncx:VT";
+static const char *getoptargs = "lerisx:VT";
 # else
-static const char *getoptargs = "u:lerincx:VT";
+static const char *getoptargs = "lerix:VT";
 # endif
 #else
 # ifdef WITH_SELINUX
-static const char *getoptargs = "u:lerisncVT";
+static const char *getoptargs = "lerisVT";
 # else
-static const char *getoptargs = "u:lerincVT";
+static const char *getoptargs = "leriVT";
 # endif
 #endif
 #ifdef WITH_SELINUX
@@ -127,13 +127,10 @@
 	fprintf(stderr, " %s -n [hostname]\n", ProgramName);
 	fprintf(stderr, "\n");
 	fprintf(stderr, "Options:\n");
-	fprintf(stderr, " -u <user>  define user\n");
 	fprintf(stderr, " -e         edit user's crontab\n");
 	fprintf(stderr, " -l         list user's crontab\n");
 	fprintf(stderr, " -r         delete user's crontab\n");
 	fprintf(stderr, " -i         prompt before deleting\n");
-	fprintf(stderr, " -n <host>  set host in cluster to run users' crontabs\n");
-	fprintf(stderr, " -c         get host in cluster to run users' crontabs\n");
 	fprintf(stderr, " -T <file>  test a crontab file syntax\n");
 #ifdef WITH_SELINUX
 	fprintf(stderr, " -s         selinux context\n");
@@ -167,6 +164,7 @@
 #endif
 	parse_args(argc, argv);	/* sets many globals, opens a file */
 	check_spool_dir();
+#ifndef __ANDROID__
 	if (!allowed(RealUser, CRON_ALLOW, CRON_DENY)) {
 		fprintf(stderr,
 			"You (%s) are not allowed to use this program (%s)\n",
@@ -175,7 +173,7 @@
 		log_it(RealUser, Pid, "AUTH", "crontab command not allowed", 0);
 		exit(ERROR_EXIT);
 	}
-
+#endif
 #if defined(WITH_PAM)
 	if (getuid() != 0 && cron_start_pam(pw) != PAM_SUCCESS) {
 		fprintf(stderr,
@@ -228,7 +226,7 @@
 	int argch;
 
 	if (!(pw = getpwuid(getuid()))) {
-		fprintf(stderr, "%s: your UID isn't in the passwd file.\n",
+		fprintf(stderr, "%s: your UID is unknown.\n",
 			ProgramName);
 		fprintf(stderr, "bailing out.\n");
 		exit(ERROR_EXIT);
@@ -251,6 +249,7 @@
 				usage("bad debug option");
 			break;
 #endif
+#ifndef __ANDROID__
 		case 'u':
 			if (MY_UID(pw) != ROOT_UID) {
 				fprintf(stderr, "must be privileged to use -u\n");
@@ -278,6 +277,7 @@
 				usage("username too long");
 			(void) strcpy(User, optarg);
 			break;
+#endif // __ANDROID__
 		case 'l':
 			if (Option != opt_unknown)
 				usage("only one operation permitted");
@@ -309,6 +309,7 @@
 			}
 			break;
 #endif
+#ifndef __ANDROID__
 		case 'n':
 			if (MY_UID(pw) != ROOT_UID) {
 				fprintf(stderr, "must be privileged to set host with -n\n");
@@ -331,6 +332,7 @@
 			}
 			Option = opt_hostget;
 			break;
+#endif
 		case 'V':
 			puts(PACKAGE_STRING);
 			exit(EXIT_SUCCESS);
@@ -663,6 +665,7 @@
 		goto fatal;
 	case 0:
 		/* child */
+#ifndef __ANDROID__
 		if (setgid(MY_GID(pw)) < 0) {
 			perror("setgid(getgid())");
 			exit(ERROR_EXIT);
@@ -671,6 +674,7 @@
 			perror("setuid(getuid())");
 			exit(ERROR_EXIT);
 		}
+#endif
 		if (!glue_strings(q, sizeof q, editor, Filename, ' ')) {
 			fprintf(stderr, "%s: editor command line too long\n", ProgramName);
 			exit(ERROR_EXIT);
@@ -878,6 +882,7 @@
 	file_owner = (getgid() == geteuid() &&
 		getgid() == getegid()) ? ROOT_UID : pw->pw_uid;
 
+#ifndef __ANDROID__
 #ifdef HAVE_FCHOWN
 	if (fchown(fileno(tmp), file_owner, (gid_t)-1) < OK) {
 		perror("fchown");
@@ -893,6 +898,7 @@
 		goto done;
 	}
 #endif
+#endif
 
 	if (fclose(tmp) == EOF) {
 		perror("fclose");
diff -uNr cronie-1.5.7/src/misc.c cronie-1.5.7.mod/src/misc.c
--- cronie-1.5.7/src/misc.c	2019-05-07 12:45:40.000000000 +0000
+++ cronie-1.5.7.mod/src/misc.c	2021-05-03 18:37:15.040789324 +0000
@@ -228,6 +228,9 @@
 }
 
 void set_cron_uid(void) {
+#ifdef __ANDROID__
+	return;
+#endif
 #if defined(BSD) || defined(POSIX)
 	if (seteuid(ROOT_UID) < OK) {
 		perror("seteuid");
@@ -650,6 +653,7 @@
 }
 #endif /*MAIL_DATE */
 
+#ifndef __ANDROID__
 #ifdef HAVE_SAVED_UIDS
 static uid_t save_euid;
 static gid_t save_egid;
@@ -675,7 +679,15 @@
 	return (swap_uids());
 }
 #endif /*HAVE_SAVED_UIDS */
+#else
+int swap_uids(void) {
+	return 0;
+}
 
+int swap_uids_back(void) {
+	return 0;
+}
+#endif
 size_t strlens(const char *last, ...) {
 	va_list ap;
 	size_t ret = 0;
diff -uNr cronie-1.5.7/src/security.c cronie-1.5.7.mod/src/security.c
--- cronie-1.5.7/src/security.c	2021-01-22 11:29:39.000000000 +0000
+++ cronie-1.5.7.mod/src/security.c	2021-05-03 18:37:15.040789324 +0000
@@ -235,6 +235,10 @@
 }
 
 int cron_change_groups(struct passwd *pw) {
+#ifdef __ANDROID__
+	return 0;
+#endif
+
 	pid_t pid = getpid();
 
 	if (setgid(pw->pw_gid) != 0) {
@@ -259,10 +263,12 @@
 }
 
 int cron_change_user_permanently(struct passwd *pw, char *homedir) {
+#ifndef __ANDROID__
 	if (setreuid(pw->pw_uid, pw->pw_uid) != 0) {
 		log_it("CRON", getpid(), "ERROR", "setreuid failed", errno);
 		return -1;
 	}
+#endif
 
 	if (chdir(homedir) == -1) {
 		log_it("CRON", getpid(), "ERROR chdir failed", homedir, errno);