[FL-1355] Fix flipper name C string (#485)

* api-hal-version: guarantee zero terminated flipper name
* cli_commands: fix hw_info command

applications/cli/cli_commands.c

@@ -102,7 +102,10 @@ void cli_command_hw_info(Cli* cli, string_t args, void* context) {
         api_hal_version_get_hw_connect());
     time_t time = api_hal_version_get_hw_timestamp();
     printf("%-20s %s\r", "Production date:", ctime(&time));
-    printf("%-20s %s", "Name:", api_hal_version_get_name_ptr());
+    const char* name = api_hal_version_get_name_ptr();
+    if(name) {
+        printf("%-20s %s", "Name:", name);
+    }
 }
 
 void cli_command_vibro(Cli* cli, string_t args, void* context) {

firmware/targets/api-hal-include/api-hal-version.h

@@ -9,6 +9,9 @@
 extern "C" {
 #endif
 
+/** Init flipper version */
+void api_hal_version_init();
+
 /** Check target firmware version */
 bool api_hal_version_do_i_belong_here();
 

firmware/targets/f5/api-hal/api-hal-version.c

@@ -11,6 +11,14 @@ typedef struct {
     char name[8];
 } ApiHalVersionOTP;
 
+// Initialiazed from OTP, used to guarantee zero terminated C string
+static char flipper_name[9];
+
+void api_hal_version_init() {
+    char* name = ((ApiHalVersionOTP*)OTP_AREA_BASE)->name;
+    strlcpy(flipper_name, name, 9);
+}
+
 bool api_hal_version_do_i_belong_here() {
     return api_hal_version_get_hw_target() == 5;
 }
@@ -36,8 +44,7 @@ const uint32_t api_hal_version_get_hw_timestamp() {
 }
 
 const char * api_hal_version_get_name_ptr() {
-    char * name = ((ApiHalVersionOTP*)OTP_AREA_BASE)->name;
-    return *name == 0xFFU ? NULL : name; 
+    return *flipper_name == 0xFFU ? NULL : flipper_name;
 }
 
 const struct Version* api_hal_version_get_fw_version(void) {

firmware/targets/f5/api-hal/api-hal.c

@@ -1,6 +1,8 @@
 #include <api-hal.h>
 
 void api_hal_init() {
+    api_hal_version_init();
+    FURI_LOG_I("FURI_HAL", "VERSION OK");
     api_hal_delay_init();
     FURI_LOG_I("FURI_HAL", "DELAY OK");
     api_hal_os_init();

firmware/targets/f6/api-hal/api-hal-version.c

@@ -11,6 +11,14 @@ typedef struct {
     char name[8];
 } ApiHalVersionOTP;
 
+// Initialiazed from OTP, used to guarantee zero terminated C string
+static char flipper_name[9];
+
+void api_hal_version_init() {
+    char* name = ((ApiHalVersionOTP*)OTP_AREA_BASE)->name;
+    strlcpy(flipper_name, name, 9);
+}
+
 bool api_hal_version_do_i_belong_here() {
     return api_hal_version_get_hw_target() == 5;
 }
@@ -36,8 +44,7 @@ const uint32_t api_hal_version_get_hw_timestamp() {
 }
 
 const char * api_hal_version_get_name_ptr() {
-    char * name = ((ApiHalVersionOTP*)OTP_AREA_BASE)->name;
-    return *name == 0xFFU ? NULL : name; 
+    return *flipper_name == 0xFFU ? NULL : flipper_name;
 }
 
 const struct Version* api_hal_version_get_fw_version(void) {

firmware/targets/f6/api-hal/api-hal.c

@@ -1,6 +1,8 @@
 #include <api-hal.h>
 
 void api_hal_init() {
+    api_hal_version_init();
+    FURI_LOG_I("FURI_HAL", "VERSION OK");
     api_hal_delay_init();
     FURI_LOG_I("FURI_HAL", "DELAY OK");
     api_hal_os_init();