Replace raw number by its name

PR #4373 <https://github.com/Genymobile/scrcpy/pull/4373>

Signed-off-by: Romain Vimont <rom@rom1v.com>

app/src/adb/adb.c

@@ -216,16 +216,16 @@ sc_adb_kill_server(struct sc_intr *intr, unsigned flags) {
 bool
 sc_adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
                const char *device_socket_name, unsigned flags) {
-    char *local;
-    if (asprintf(&local, "tcp:%" PRIu16, local_port) == -1) {
-        LOG_OOM();
-        return false;
-    }
+    char local[4 + 5 + 1]; // tcp:PORT
+    char remote[108 + 14 + 1]; // localabstract:NAME
 
-    char *remote;
-    if (asprintf(&remote, "localabstract:%s", device_socket_name) == -1) {
-        LOG_OOM();
-        free(local);
+    int r = snprintf(local, sizeof(local), "tcp:%" PRIu16, local_port);
+    assert(r >= 0 && (size_t) r < sizeof(local));
+
+    r = snprintf(remote, sizeof(remote), "localabstract:%s",
+                 device_socket_name);
+    if (r < 0 || (size_t) r >= sizeof(remote)) {
+        LOGE("Could not write socket name");
         return false;
     }
 
@@ -234,26 +234,22 @@ sc_adb_forward(struct sc_intr *intr, const char *serial, uint16_t local_port,
         SC_ADB_COMMAND("-s", serial, "forward", local, remote);
 
     sc_pid pid = sc_adb_execute(argv, flags);
-    free(remote);
-    free(local);
     return process_check_success_intr(intr, pid, "adb forward", flags);
 }
 
 bool
 sc_adb_forward_remove(struct sc_intr *intr, const char *serial,
                       uint16_t local_port, unsigned flags) {
-    char *local;
-    if (asprintf(&local, "tcp:%" PRIu16, local_port) == -1) {
-        LOG_OOM();
-        return false;
-    }
+    char local[4 + 5 + 1]; // tcp:PORT
+    int r = snprintf(local, sizeof(local), "tcp:%" PRIu16, local_port);
+    assert(r >= 0 && (size_t) r < sizeof(local));
+    (void) r;
 
     assert(serial);
     const char *const argv[] =
         SC_ADB_COMMAND("-s", serial, "forward", "--remove", local);
 
     sc_pid pid = sc_adb_execute(argv, flags);
-    free(local);
     return process_check_success_intr(intr, pid, "adb forward --remove", flags);
 }
 
@@ -261,36 +257,34 @@ bool
 sc_adb_reverse(struct sc_intr *intr, const char *serial,
                const char *device_socket_name, uint16_t local_port,
                unsigned flags) {
+    char local[4 + 5 + 1]; // tcp:PORT
+    char remote[108 + 14 + 1]; // localabstract:NAME
+    int r = snprintf(local, sizeof(local), "tcp:%" PRIu16, local_port);
+    assert(r >= 0 && (size_t) r < sizeof(local));
+
+    r = snprintf(remote, sizeof(remote), "localabstract:%s",
+                 device_socket_name);
+    if (r < 0 || (size_t) r >= sizeof(remote)) {
+        LOGE("Could not write socket name");
+        return false;
+    }
+
     assert(serial);
-
-    char *local;
-    if (asprintf(&local, "tcp:%" PRIu16, local_port) == -1) {
-        LOG_OOM();
-        return false;
-    }
-
-    char *remote;
-    if (asprintf(&remote, "localabstract:%s", device_socket_name) == -1) {
-        LOG_OOM();
-        free(local);
-        return false;
-    }
-
     const char *const argv[] =
         SC_ADB_COMMAND("-s", serial, "reverse", remote, local);
 
     sc_pid pid = sc_adb_execute(argv, flags);
-    free(remote);
-    free(local);
     return process_check_success_intr(intr, pid, "adb reverse", flags);
 }
 
 bool
 sc_adb_reverse_remove(struct sc_intr *intr, const char *serial,
                       const char *device_socket_name, unsigned flags) {
-    char *remote;
-    if (asprintf(&remote, "localabstract:%s", device_socket_name) == -1) {
-        LOG_OOM();
+    char remote[108 + 14 + 1]; // localabstract:NAME
+    int r = snprintf(remote, sizeof(remote), "localabstract:%s",
+                     device_socket_name);
+    if (r < 0 || (size_t) r >= sizeof(remote)) {
+        LOGE("Device socket name too long");
         return false;
     }
 
@@ -299,7 +293,6 @@ sc_adb_reverse_remove(struct sc_intr *intr, const char *serial,
         SC_ADB_COMMAND("-s", serial, "reverse", "--remove", remote);
 
     sc_pid pid = sc_adb_execute(argv, flags);
-    free(remote);
     return process_check_success_intr(intr, pid, "adb reverse --remove", flags);
 }
 
@@ -362,18 +355,16 @@ sc_adb_install(struct sc_intr *intr, const char *serial, const char *local,
 bool
 sc_adb_tcpip(struct sc_intr *intr, const char *serial, uint16_t port,
              unsigned flags) {
-    char *port_string;
-    if (asprintf(&port_string, "%" PRIu16, port) == -1) {
-        LOG_OOM();
-        return false;
-    }
+    char port_string[5 + 1];
+    int r = snprintf(port_string, sizeof(port_string), "%" PRIu16, port);
+    assert(r >= 0 && (size_t) r < sizeof(port_string));
+    (void) r;
 
     assert(serial);
     const char *const argv[] =
         SC_ADB_COMMAND("-s", serial, "tcpip", port_string);
 
     sc_pid pid = sc_adb_execute(argv, flags);
-    free(port_string);
     return process_check_success_intr(intr, pid, "adb tcpip", flags);
 }
 

app/src/usb/hid_keyboard.c

@@ -27,7 +27,8 @@
 // keyboard support, though OS could support more keys via modifying the report
 // desc. 6 should be enough for scrcpy.
 #define HID_KEYBOARD_MAX_KEYS 6
-#define HID_KEYBOARD_EVENT_SIZE (HID_KEYBOARD_INDEX_KEYS + HID_KEYBOARD_MAX_KEYS)
+#define HID_KEYBOARD_EVENT_SIZE \
+    (HID_KEYBOARD_INDEX_KEYS + HID_KEYBOARD_MAX_KEYS)
 
 #define HID_RESERVED 0x00
 #define HID_ERROR_ROLL_OVER 0x01

app/tests/test_str.c

@@ -269,21 +269,25 @@ static void test_parse_integer_with_suffix(void) {
 
     char buf[32];
 
-    sprintf(buf, "%ldk", LONG_MAX / 2000);
+    int r = snprintf(buf, sizeof(buf), "%ldk", LONG_MAX / 2000);
+    assert(r >= 0 && (size_t) r < sizeof(buf));
     ok = sc_str_parse_integer_with_suffix(buf, &value);
     assert(ok);
     assert(value == LONG_MAX / 2000 * 1000);
 
-    sprintf(buf, "%ldm", LONG_MAX / 2000);
+    r = snprintf(buf, sizeof(buf), "%ldm", LONG_MAX / 2000);
+    assert(r >= 0 && (size_t) r < sizeof(buf));
     ok = sc_str_parse_integer_with_suffix(buf, &value);
     assert(!ok);
 
-    sprintf(buf, "%ldk", LONG_MIN / 2000);
+    r = snprintf(buf, sizeof(buf), "%ldk", LONG_MIN / 2000);
+    assert(r >= 0 && (size_t) r < sizeof(buf));
     ok = sc_str_parse_integer_with_suffix(buf, &value);
     assert(ok);
     assert(value == LONG_MIN / 2000 * 1000);
 
-    sprintf(buf, "%ldm", LONG_MIN / 2000);
+    r = snprintf(buf, sizeof(buf), "%ldm", LONG_MIN / 2000);
+    assert(r >= 0 && (size_t) r < sizeof(buf));
     ok = sc_str_parse_integer_with_suffix(buf, &value);
     assert(!ok);
 }