From b62347c73e8c94211d2d710acd0141abde9e5fda Mon Sep 17 00:00:00 2001
From: Nick Chan <towinchenmi@gmail.com>
Date: Thu, 6 Feb 2025 11:45:52 +0800
Subject: [PATCH] convert into static declarations where possible

---
 include/palerain.h              |  4 ----
 include/tui.h                   |  6 ------
 src/dfuhelper.c                 | 12 ++++++------
 src/main.c                      |  4 ++--
 src/override_file.c             |  1 -
 src/pongo_helper.c              | 12 ++++++++----
 src/tui_devhelper.c             | 18 +++++++++---------
 src/tui_main.c                  | 11 ++++++-----
 src/tui_screen_enter_dfu.c      | 20 ++++++++++----------
 src/tui_screen_enter_recovery.c | 18 +++++++++---------
 src/tui_screen_jailbreak.c      |  9 +++++----
 src/tui_screen_main.c           | 22 ++++++++++++----------
 src/tui_screen_options.c        |  6 +++---
 13 files changed, 70 insertions(+), 73 deletions(-)

diff --git a/include/palerain.h b/include/palerain.h
index 86695ed..d9e9279 100644
--- a/include/palerain.h
+++ b/include/palerain.h
@@ -204,12 +204,9 @@ boyermoore_horspool_memmem(const unsigned char* haystack, size_t hlen,
                            const unsigned char* needle,   size_t nlen);
 
 
-extern void* pongo_usb_callback(stuff_t* arg);
 usb_ret_t USBControlTransfer(usb_device_handle_t handle, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint32_t wLength, void *data, uint32_t *wLenDone);
 const char *usb_strerror(usb_ret_t err);
 int wait_for_pongo(void);
-int upload_pongo_file(usb_device_handle_t, unsigned char*, unsigned int);
-int issue_pongo_command(usb_device_handle_t, char*);
 int tui(void);
 int optparse(int argc, char* argv[]);
 
@@ -221,7 +218,6 @@ bool set_found_pongo(bool val);
 uint64_t get_ecid_wait_for_dfu(void);
 uint64_t set_ecid_wait_for_dfu(uint64_t ecid);
 
-void write_stdout(char *buf, uint32_t len);
 void io_start(stuff_t *stuff);
 void io_stop(stuff_t *stuff);
 
diff --git a/include/tui.h b/include/tui.h
index 98e6bf1..fc5e944 100644
--- a/include/tui.h
+++ b/include/tui.h
@@ -102,12 +102,9 @@ void tui_draw_rectangle(int x1, int y1, int x2, int y2);
 #define TUI_VERSION "Unknown Version"
 #endif
 
-extern int tui_state;
 extern int tui_x_offset;
 extern int tui_y_offset;
 
-extern bool tui_can_start;
-
 extern int tui_mouse_x;
 extern int tui_mouse_y;
 
@@ -167,8 +164,6 @@ struct tui_connected_device {
 
 extern struct tui_connected_device *tui_connected_devices;
 
-int tui_compare_versions(const char *firstVersion, const char *secondVersion);
-
 void tui_jailbreak(void);
 extern bool tui_is_jailbreaking;
 extern int tui_jailbreak_stage;
@@ -179,7 +174,6 @@ void tui_jailbreak_status_changed(void);
 extern bool tui_is_restarting;
 void tui_terminate(int sig);
 
-extern bool tui_options_allow_untested;
 extern bool tui_options_safe_mode;
 extern bool tui_options_verbose_boot;
 extern bool tui_options_force_revert;
diff --git a/src/dfuhelper.c b/src/dfuhelper.c
index 0a039f6..e639012 100644
--- a/src/dfuhelper.c
+++ b/src/dfuhelper.c
@@ -40,7 +40,7 @@
 
 int dfuhelper_thr_running = false;
 
-void step(int time, int time2, char *text, bool (*cond)(uint64_t), uint64_t cond_arg) {
+static void step(int time, int time2, char *text, bool (*cond)(uint64_t), uint64_t cond_arg) {
     for (int i = time2; i < time; i++) {
 		printf(
 			(palerain_flags & palerain_option_no_colors) 
@@ -59,7 +59,7 @@ void step(int time, int time2, char *text, bool (*cond)(uint64_t), uint64_t cond
 	if (time2 == 0) puts("");
 }
 
-int connected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
+static int connected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
 	devinfo_t dev;
 	int ret;
 	ret = devinfo_cmd(&dev, usbmuxd_device->udid);
@@ -133,7 +133,7 @@ static bool conditional(uint64_t ecid) {
 	return get_ecid_wait_for_dfu() != ecid;
 }
 
-void* connected_recovery_mode(struct irecv_device_info* info) {
+static void* connected_recovery_mode(struct irecv_device_info* info) {
 	int ret;
 	uint64_t ecid;
 	uint32_t cpid, bdid;
@@ -223,7 +223,7 @@ void* connected_recovery_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void* connected_dfu_mode(struct irecv_device_info* info) {
+static void* connected_dfu_mode(struct irecv_device_info* info) {
 	if (get_ecid_wait_for_dfu() == info->ecid) {
 		set_ecid_wait_for_dfu(0);
 		puts("");
@@ -240,7 +240,7 @@ void* connected_dfu_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void device_event_cb(const usbmuxd_event_t *event, void* userdata) {
+static void device_event_cb(const usbmuxd_event_t *event, void* userdata) {
 	if (event->device.conn_type != CONNECTION_TYPE_USB) return;
 	switch (event->event) {
 	case UE_DEVICE_ADD:
@@ -265,7 +265,7 @@ void device_event_cb(const usbmuxd_event_t *event, void* userdata) {
 	}
 }
 
-void irecv_device_event_cb(const irecv_device_event_t *event, void* userdata) {
+static void irecv_device_event_cb(const irecv_device_event_t *event, void* userdata) {
 	pthread_t recovery_thread, dfu_thread;
 	int ret;
 	
diff --git a/src/main.c b/src/main.c
index 6477262..67ca4c3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -57,7 +57,7 @@ void thr_cleanup(void* ptr) {
 	*(int*)ptr = 0;
 }
 
-int build_checks(void) {
+static int build_checks(void) {
 #ifndef NO_CHECKRAIN
 #if defined(__APPLE__)
 	struct mach_header_64* c1_header = (struct mach_header_64*)&checkra1n[0];
@@ -96,7 +96,7 @@ int saved_argc;
 char** saved_argv;
 char** saved_envp;
 
-int palera1n(int argc, char *argv[], char *envp[]) {
+static int palera1n(int argc, char *argv[], char *envp[]) {
 	saved_argc = argc;
 	saved_argv = argv;
 	saved_envp = envp;
diff --git a/src/override_file.c b/src/override_file.c
index fc8ddd9..d2b1988 100644
--- a/src/override_file.c
+++ b/src/override_file.c
@@ -14,7 +14,6 @@
 #include <sys/mman.h>
 #include <errno.h>
 
-
 int override_file(override_file_t *finfo, niarelap_file_t** orig, unsigned int *orig_len, char *filename) {
 	int ret = 0;
 	int fd = open(filename, O_RDONLY);
diff --git a/src/pongo_helper.c b/src/pongo_helper.c
index cda6673..b612623 100644
--- a/src/pongo_helper.c
+++ b/src/pongo_helper.c
@@ -21,6 +21,10 @@ int pongo_thr_running = 0;
 
 #define ERR(...) LOG(LOG_VERBOSE, __VA_ARGS__)
 
+static int issue_pongo_command(usb_device_handle_t, char*);
+static int upload_pongo_file(usb_device_handle_t, unsigned char*, unsigned int);
+static void write_stdout(char *buf, uint32_t len);
+
 void* pongo_helper(void* ptr) {
 	pongo_thr_running = 1;
 	pthread_cleanup_push(thr_cleanup, &pongo_thr_running);
@@ -32,7 +36,7 @@ void* pongo_helper(void* ptr) {
 	return NULL;
 }
 
-void *pongo_usb_callback(stuff_t *arg) {
+static void *pongo_usb_callback(stuff_t *arg) {
 	if (get_found_pongo())
 		return NULL;
 	set_found_pongo(1);
@@ -145,7 +149,7 @@ done:
 	return NULL;
 }
 
-int issue_pongo_command(usb_device_handle_t handle, char *command)
+static int issue_pongo_command(usb_device_handle_t handle, char *command)
 {
 	uint32_t outpos = 0;
 	uint32_t outlen = 0;
@@ -207,7 +211,7 @@ bad:
 		return ret;
 }
 
-int upload_pongo_file(usb_device_handle_t handle, unsigned char *buf, unsigned int buf_len)
+static int upload_pongo_file(usb_device_handle_t handle, unsigned char *buf, unsigned int buf_len)
 {
 	int ret = 0;
 	ret = USBControlTransfer(handle, 0x21, 1, 0, 0, 4, &buf_len, NULL);
@@ -263,7 +267,7 @@ void io_stop(stuff_t *stuff)
 #endif
 }
 
-void write_stdout(char *buf, uint32_t len)
+static void write_stdout(char *buf, uint32_t len)
 {
     while(len > 0) {
         if (verbose >= 3) {
diff --git a/src/tui_devhelper.c b/src/tui_devhelper.c
index fe99698..d6863aa 100644
--- a/src/tui_devhelper.c
+++ b/src/tui_devhelper.c
@@ -3,7 +3,7 @@
 #include <palerain.h>
 #include <tui.h>
 
-irecv_device_t tui_get_recovery_device(uint64_t ecid) {
+static irecv_device_t tui_get_recovery_device(uint64_t ecid) {
     irecv_client_t client = NULL;
 	for (int i = 0; i <= 5; i++) {
 		irecv_error_t err = irecv_open_with_ecid(&client, ecid);
@@ -28,7 +28,7 @@ irecv_device_t tui_get_recovery_device(uint64_t ecid) {
 
 struct tui_connected_device *tui_connected_devices = NULL;
 
-void* tui_connected_recovery_mode(struct irecv_device_info* info) {
+static void* tui_connected_recovery_mode(struct irecv_device_info* info) {
     //printf("Recovery mode device %" PRIu64 " connected\n", info->ecid);
     tui_last_event = TUI_EVENT_CONNECTED_DEVICES_CHANGED;
     sem_post(tui_event_semaphore);
@@ -36,7 +36,7 @@ void* tui_connected_recovery_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void* tui_disconnected_recovery_mode(struct irecv_device_info* info) {
+static void* tui_disconnected_recovery_mode(struct irecv_device_info* info) {
     //printf("Recovery mode device %" PRIu64 " disconnected\n", info->ecid);
     tui_last_event = TUI_EVENT_CONNECTED_DEVICES_CHANGED;
     sem_post(tui_event_semaphore);
@@ -44,7 +44,7 @@ void* tui_disconnected_recovery_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void* tui_connected_dfu_mode(struct irecv_device_info* info) {
+static void* tui_connected_dfu_mode(struct irecv_device_info* info) {
     //printf("DFU mode device %" PRIu64 " connected\n", info->ecid);
     tui_last_event = TUI_EVENT_CONNECTED_DEVICES_CHANGED;
     sem_post(tui_event_semaphore);
@@ -52,7 +52,7 @@ void* tui_connected_dfu_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void* tui_disconnected_dfu_mode(struct irecv_device_info* info) {
+static void* tui_disconnected_dfu_mode(struct irecv_device_info* info) {
     //printf("DFU mode device %" PRIu64 " disconnected\n", info->ecid);
     tui_last_event = TUI_EVENT_CONNECTED_DEVICES_CHANGED;
     sem_post(tui_event_semaphore);
@@ -60,7 +60,7 @@ void* tui_disconnected_dfu_mode(struct irecv_device_info* info) {
     return NULL;
 }
 
-int tui_connected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
+static int tui_connected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
     struct tui_connected_device *tui_dev = malloc(sizeof(struct tui_connected_device));
     strcpy(tui_dev->udid, usbmuxd_device->udid);
     tui_dev->next = tui_connected_devices;
@@ -105,7 +105,7 @@ int tui_connected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
 	return 0;
 }
 
-void tui_disconnected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
+static void tui_disconnected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
     struct tui_connected_device *cur = tui_connected_devices;
     struct tui_connected_device *prev = NULL;
     while (cur) {
@@ -126,7 +126,7 @@ void tui_disconnected_normal_mode(const usbmuxd_device_info_t *usbmuxd_device) {
     sem_post(tui_event_semaphore);
 }
 
-void tui_device_event_cb(const usbmuxd_event_t *event, void* userdata) {
+static void tui_device_event_cb(const usbmuxd_event_t *event, void* userdata) {
 	if (event->device.conn_type != CONNECTION_TYPE_USB) return;
 	switch (event->event) {
 	case UE_DEVICE_ADD:
@@ -140,7 +140,7 @@ void tui_device_event_cb(const usbmuxd_event_t *event, void* userdata) {
 	}
 }
 
-void tui_irecv_device_event_cb(const irecv_device_event_t *event, void* userdata) {
+static void tui_irecv_device_event_cb(const irecv_device_event_t *event, void* userdata) {
 	pthread_t recovery_thread, dfu_thread;
 	int ret;
 	
diff --git a/src/tui_main.c b/src/tui_main.c
index d5d80d7..eb1f11c 100644
--- a/src/tui_main.c
+++ b/src/tui_main.c
@@ -28,13 +28,14 @@ int proc_pidpath(int pid, void * buffer, uint32_t buffersize);
 char random_sem_name[sizeof("palera1n.tui_event_semaphore") + 16 + 1];
 #endif
 
-int tui_state = 0;
+static int tui_state = 0;
+
 int tui_x_offset = 0;
 int tui_y_offset = 0;
 
 bool supports_bright_colors = true;
 
-struct termios saved_termios;
+static struct termios saved_termios;
 
 int redraw_screen(void) {
     SETCOLOR(FG_BRIGHT_WHITE, BG_BLACK);
@@ -83,7 +84,7 @@ int redraw_screen(void) {
     return 0;
 }
 
-int destroy_window(void) {
+static int destroy_window(void) {
     if (!tui_started) return 0;
     tui_started = false;
     tcsetattr(STDIN_FILENO, 0, &saved_termios);
@@ -97,7 +98,7 @@ int destroy_window(void) {
     return 0;
 }
 
-int init_window(void) {
+static int init_window(void) {
     setlocale(LC_ALL, NULL);
 
     tui_started = true;
@@ -151,7 +152,7 @@ void tui_terminate(int sig) {
     }
 }
 
-void resize_handler(int sig) {
+static void resize_handler(int sig) {
     redraw_screen();
 }
 
diff --git a/src/tui_screen_enter_dfu.c b/src/tui_screen_enter_dfu.c
index afd1409..f463d46 100644
--- a/src/tui_screen_enter_dfu.c
+++ b/src/tui_screen_enter_dfu.c
@@ -28,9 +28,9 @@
 #include <palerain.h>
 #include <tui.h>
 
-int tui_enter_dfu_nav_selection = 1;
-bool tui_device_is_entering_dfu = false;
-int tui_enter_dfu_status = 0;
+static int tui_enter_dfu_nav_selection = 1;
+static bool tui_device_is_entering_dfu = false;
+static int tui_enter_dfu_status = 0;
 
 enum {
     DEVICE_TYPE_IPHONE_SE,
@@ -41,7 +41,7 @@ enum {
     DEVICE_TYPE_IPOD_TOUCH
 } device_type;
 
-int tui_product_type_to_device_type(char *product_type) {
+static int tui_product_type_to_device_type(char *product_type) {
     if (strcmp(product_type, "iPhone8,1") == 0 || strcmp(product_type, "iPhone8,2") == 0) {
         return DEVICE_TYPE_IPHONE_6S;
     }
@@ -68,11 +68,11 @@ int tui_product_type_to_device_type(char *product_type) {
     return DEVICE_TYPE_IPHONE_SE;
 }
 
-int tui_enter_dfu_device_type = DEVICE_TYPE_IPHONE_SE;
+static int tui_enter_dfu_device_type = DEVICE_TYPE_IPHONE_SE;
 
-int tui_enter_dfu_loading_progress = 1;
+static int tui_enter_dfu_loading_progress = 1;
 
-void tui_screen_enter_dfu_nav(void) {
+static void tui_screen_enter_dfu_nav(void) {
     MOVETOT(80 - 22, 23);
     printf("%s[ Cancel ]" COLOR(FG_WHITE, BG_BLACK) " %s[  %s ]" COLOR(FG_WHITE, BG_BLACK),
         tui_device_is_entering_dfu || tui_enter_dfu_status == 1 ? (supports_bright_colors ? COLOR(FG_BRIGHT_BLACK, BG_BLACK) : COLOR(FG_BLUE, BG_BLACK)) : tui_enter_dfu_nav_selection == 0 ? "\033[30;107m" : (
@@ -343,9 +343,9 @@ void tui_screen_enter_dfu_redraw(void) {
 }
 
 // TODO: IMPLEMENT REAL ENTER RECOVERY
-int dfu_time = 0;
+static int dfu_time = 0;
 
-tui_screen_t tui_enter_dfu(void) {
+static tui_screen_t tui_enter_dfu(void) {
     if (tui_connected_devices && !tui_connected_devices->next) {
         if (tui_connected_devices->mode == TUI_DEVICE_MODE_NORMAL) {
             tui_enter_dfu_status = 0;
@@ -391,7 +391,7 @@ tui_screen_t tui_enter_dfu(void) {
     return JAILBREAK_SCREEN;
 }
 
-int tui_enter_dfu_nav_mouse_select = -1;
+static int tui_enter_dfu_nav_mouse_select = -1;
 
 tui_screen_t tui_screen_enter_dfu(void) {
     if (tui_connected_devices && !tui_connected_devices->next) {
diff --git a/src/tui_screen_enter_recovery.c b/src/tui_screen_enter_recovery.c
index d977694..50db9fc 100644
--- a/src/tui_screen_enter_recovery.c
+++ b/src/tui_screen_enter_recovery.c
@@ -18,7 +18,7 @@ int tui_enter_recovery_nav_selection = 1;
 bool tui_device_is_entering_recovery = false;
 bool tui_enter_recovery_mode_failed = false;
 
-void tui_screen_enter_recovery_nav(void) {
+static void tui_screen_enter_recovery_nav(void) {
     MOVETOT(80 - 22, 23);
     printf("%s[  Back  ]" COLOR(FG_WHITE, BG_BLACK) " %s[  Next  ]" COLOR(FG_WHITE, BG_BLACK),
         tui_device_is_entering_recovery ? (supports_bright_colors ? COLOR(FG_BRIGHT_BLACK, BG_BLACK) : COLOR(FG_BLUE, BG_BLACK)) : tui_enter_recovery_nav_selection == 0 ? "\033[30;107m" : (
@@ -34,7 +34,7 @@ void tui_screen_enter_recovery_nav(void) {
     );
 }
 
-char enter_recovery_loading[9][8] = {
+static char enter_recovery_loading[9][8] = {
     "........",
     "|.......",
     ".|......",
@@ -46,7 +46,7 @@ char enter_recovery_loading[9][8] = {
     ".......|"
 };
 
-char enter_recovery_loading_troll[9][8] = {
+static char enter_recovery_loading_troll[9][8] = {
     ".......",
     "t......",
     ".r.....",
@@ -57,10 +57,10 @@ char enter_recovery_loading_troll[9][8] = {
     "......d",
 };
 
-bool is_troll;
-int tui_enter_recovery_loading_progress = 0;
+static bool is_troll;
+static int tui_enter_recovery_loading_progress = 0;
 
-void tui_screen_enter_recovery_loading(void) {
+static void tui_screen_enter_recovery_loading(void) {
     SETCOLOR(FG_YELLOW, BG_BLACK);
     PRINTATT(3, 8, "Entering recovery mode ");
     printf("%.8s", is_troll ? enter_recovery_loading_troll[tui_enter_recovery_loading_progress] : enter_recovery_loading[tui_enter_recovery_loading_progress]);
@@ -88,9 +88,9 @@ void tui_screen_enter_recovery_redraw(void) {
     fflush(stdout);
 }
 
-int recovery_time = 0;
+static int recovery_time = 0;
 
-tui_screen_t tui_enter_recovery(void) {
+static tui_screen_t tui_enter_recovery(void) {
     enter_recovery_cmd(tui_connected_devices->udid);
     is_troll = false;
     if (rand() % 1000 == 0) {
@@ -128,7 +128,7 @@ tui_screen_t tui_enter_recovery(void) {
     }
 }
 
-int tui_enter_recovery_nav_mouse_select = -1;
+static int tui_enter_recovery_nav_mouse_select = -1;
 
 tui_screen_t tui_screen_enter_recovery(void) {
     tui_device_is_entering_recovery = false;
diff --git a/src/tui_screen_jailbreak.c b/src/tui_screen_jailbreak.c
index 7719178..7fc5af3 100644
--- a/src/tui_screen_jailbreak.c
+++ b/src/tui_screen_jailbreak.c
@@ -15,7 +15,7 @@
 
 bool tui_is_jailbreaking = false;
 
-void tui_screen_jailbreak_nav(void) {
+static void tui_screen_jailbreak_nav(void) {
     if (tui_is_jailbreaking) {
         if (supports_bright_colors) {
             SETCOLOR(FG_BRIGHT_BLACK, BG_BLACK);
@@ -29,7 +29,8 @@ void tui_screen_jailbreak_nav(void) {
     SETCOLOR(FG_WHITE, BG_BLACK);
 }
 
-pthread_t tui_jailbreak_thread_id;
+static pthread_t tui_jailbreak_thread_id;
+
 int tui_jailbreak_stage = 0;
 char *tui_jailbreak_status = NULL;
 
@@ -38,7 +39,7 @@ void tui_jailbreak_status_changed(void) {
     sem_post(tui_event_semaphore);
 }
 
-void *tui_jailbreak_thread(void *arg) {
+static void *tui_jailbreak_thread(void *arg) {
     tui_jailbreak_stage = 1;
     tui_jailbreak_status = "About to execute checkra1n";
 
@@ -121,7 +122,7 @@ void tui_screen_jailbreak_redraw(void) {
     tui_screen_jailbreak_nav();
 }
 
-int tui_jailbreak_nav_mouse_select = -1;
+static int tui_jailbreak_nav_mouse_select = -1;
 
 tui_screen_t tui_screen_jailbreak(void) {
     redraw_screen();
diff --git a/src/tui_screen_main.c b/src/tui_screen_main.c
index 5081613..cae8a4f 100644
--- a/src/tui_screen_main.c
+++ b/src/tui_screen_main.c
@@ -13,9 +13,11 @@
 #include <palerain.h>
 #include <tui.h>
 
-bool showing_ecid = false;
+static int tui_compare_versions(const char *firstVersion, const char *secondVersion);
 
-char palera1n_logo[17][16] = {
+static bool showing_ecid = false;
+
+static char palera1n_logo[17][16] = {
 "       ++       ",
 "      #@@#      ",
 "     +@@@@+     ",
@@ -34,7 +36,7 @@ char palera1n_logo[17][16] = {
 "      :++:      "
 };
 
-char random_quotes[][150] = {
+static char random_quotes[][150] = {
     "panic(cpu 1 caller 0xfffffff0232bd958): SEP Panic",
     "Now with Apple TV support!",
     "checkra1n will open source in 2020",
@@ -49,10 +51,10 @@ char random_quotes[][150] = {
 
 #define PALERA1N_URL "https://palera.in"
 
-int tui_main_nav_selection = 1;
-bool quick_mode_enabled = false;
-bool tui_can_start = false;
-int random_quote;
+static int tui_main_nav_selection = 1;
+static bool quick_mode_enabled = false;
+static bool tui_can_start = false;
+static int random_quote;
 
 bool easter_egg = false;
 
@@ -206,7 +208,7 @@ void tui_screen_main_redraw(void) {
     fflush(stdout);
 }
 
-int tui_main_nav_mouse_select = -1;
+static int tui_main_nav_mouse_select = -1;
 
 tui_screen_t tui_screen_main(void) {
     random_quote = ((unsigned int)((rand()+rand())/2)) % 8;
@@ -329,7 +331,7 @@ tui_screen_t tui_screen_main(void) {
     return MAIN_SCREEN;
 }
 
-int tui_version_extract_component(const char *version, int index) {
+static int tui_version_extract_component(const char *version, int index) {
     int component = 0;
     int componentIndex = 0;
     for (int i = 0; version[i] != '\0'; i++) {
@@ -348,7 +350,7 @@ int tui_version_extract_component(const char *version, int index) {
     return component;
 }
 
-int tui_compare_versions(const char *firstVersion, const char *secondVersion) {
+static int tui_compare_versions(const char *firstVersion, const char *secondVersion) {
     if (strcmp(firstVersion, secondVersion) == 0) {
         return 0;
     }
diff --git a/src/tui_screen_options.c b/src/tui_screen_options.c
index 178bd0d..82eddf5 100644
--- a/src/tui_screen_options.c
+++ b/src/tui_screen_options.c
@@ -13,10 +13,10 @@
 #include <palerain.h>
 #include <tui.h>
 
-int tui_options_nav_selection = 0;
-int tui_options_nav_mouse_select = 0;
+static int tui_options_nav_selection = 0;
+static int tui_options_nav_mouse_select = 0;
 
-bool tui_options_allow_untested = false;
+static bool tui_options_allow_untested = false;
 bool tui_options_safe_mode = false;
 bool tui_options_verbose_boot = false;
 bool tui_options_force_revert = false;