Harden SSH Admission And Credential Input

2026-09-15 20:49:04 +02:00
parent 436c27adb1
commit 751dfb9ddb
32 changed files with 1751 additions and 39 deletions
@@ -0,0 +1,29 @@
+
+#include <stdarg.h>
+#define UART_NUM_0 0
+static const uint8_t *input;
+static size_t input_size, input_offset;
+static char uart_output[4096];
+static size_t uart_output_length;
+static unsigned publications;
+static esp_err_t uart_flush_input(int uart) { assert(uart==0); ++publications; return ESP_OK; }
+static int uart_read_bytes(int uart, void *out, size_t n, unsigned wait)
+{
+    assert(uart==0 && n==1 && wait==portMAX_DELAY && !lock_depth);
+    if (input_offset==input_size) return -1;
+    *(uint8_t *)out=input[input_offset++];
+    return 1;
+}
+static int capture_printf(const char *format, ...)
+{
+    va_list ap; va_start(ap,format);
+    int n=vsnprintf(uart_output+uart_output_length,
+                    sizeof(uart_output)-uart_output_length,format,ap);
+    va_end(ap); assert(n>=0 && (size_t)n<sizeof(uart_output)-uart_output_length);
+    uart_output_length+=(size_t)n; return n;
+}
+static int capture_putchar(int c) { return capture_printf("%c",c); }
+static int capture_fflush(FILE *f) { (void)f; return 0; }
+#define printf capture_printf
+#define putchar capture_putchar
+#define fflush capture_fflush