server04!

server04.c

@@ -0,0 +1,125 @@
+//
+// Created by PeterDwyer on 30/07/2025.
+//
+
+#include "server04.h"
+#include <pthread.h>
+#include <winsock2.h>
+#include <stdio.h>
+#include "data.h"
+#include <stdbool.h>
+#include <inaddr.h>
+
+#define BUF_SIZE 1024
+
+int main() {
+    const SOCKET server = get_listen_socket_udp();
+    SOCKADDR_IN clientAddr;
+    SOCKET client;
+    int clientAddrSize = sizeof(clientAddr);
+    int connection_number = 1;
+    char *request = malloc(BUF_SIZE);
+    char buffer[BUF_SIZE] = {0};
+    int bytesReceived;
+    data_map_t *data = data_map_create(1024);
+    printf("Listening for incoming connections...\n");
+    while ((bytesReceived = recvfrom(server, buffer, sizeof(buffer), 0, (SOCKADDR *) &clientAddr, &clientAddrSize)) > 0) {
+        const char *equals = "=";
+        size_t pos;
+        // IN_ADDR addr = clientAddr.sin_addr;
+        // printf("{%d} Client ip: |%d.%d.%d.%d| \n", connection_number, addr.S_un.S_un_b.s_b1, addr.S_un.S_un_b.s_b2, addr.S_un.S_un_b.s_b3, addr.S_un.S_un_b.s_b4);
+        // printf("{%d} Client port: |%d| \n", connection_number, clientAddr.sin_port);
+        if ((pos = strcspn(buffer, equals)) >= 0) {
+            key_value_t *kv = malloc(sizeof(key_value_t));
+            strncpy_s(kv->key, BUF_SIZE, buffer, pos);
+            strncpy_s(kv->value, BUF_SIZE, buffer + sizeof(char)*(pos+1), sizeof(buffer) - pos - 1);
+            data_map_insert_kv(data, kv);
+            printf("{%d} Key: |%s| Value: |%s| \n", connection_number, kv->key, kv->value);
+        } else {
+            printf("{%d} Client sent: |%s| \n", connection_number, buffer);
+        }
+        sendto(server, buffer, bytesReceived, 0, (SOCKADDR *) &clientAddr, clientAddrSize);
+        strncpy_s(request, BUF_SIZE, buffer, bytesReceived);
+        printf("{%d} Client sent: |%s| \n", connection_number, request);
+        connection_number++;
+    }
+    data_map_free(data);
+    free(request);
+    return 0;
+}
+
+data_map_t *data_map_create(const int capacity) {
+    data_map_t *map = malloc(sizeof(data_map_t));
+    map->capacity = capacity;
+    map->count = 0;
+    map->data = calloc(capacity, sizeof(key_value_t));
+    return map;
+}
+void data_map_free(data_map_t *map) {
+    for (int i = 0; i < map->count; i++) {
+        free(map->data[i].key);
+        free(map->data[i].value);
+    }
+    free(map->data);
+    free(map);
+}
+void data_map_insert_kv(data_map_t *map, key_value_t *kv) {
+    if (map->data == NULL) {
+        exit(1);
+    }
+    for (int i = 0; i < map->count; i++) {
+        if (strcmp(map->data[i].key, kv->key) == 0) {
+            map->data[i].value = kv->value;
+            return;
+        }
+    }
+    const size_t new_size = map->count + 1;
+    if (new_size > map->capacity) {
+        map->capacity = map->capacity+1024;
+        key_value_t *new_array = realloc(map->data, map->capacity * sizeof(key_value_t));
+        map->data = new_array;
+    }
+    map->data[map->count].key = kv->key;
+    map->data[map->count].value = kv->value;
+    map->count = new_size;
+}
+
+void data_map_append(data_map_t *map, char *key, char *value) {
+    if (map->data == NULL) {
+        exit(1);
+    }
+    const size_t new_size = map->count + 1;
+    if (new_size > map->capacity) {
+        map->capacity = map->capacity+1024;
+        key_value_t *new_array = realloc(map->data, map->capacity * sizeof(key_value_t));
+        map->data = new_array;
+        if (map->data == NULL) {
+            printf("Failed to allocate memory for array\n");
+        }
+    }
+    map->data[map->count].key = key;
+    map->data[map->count].value = value;
+    map->count = new_size;
+}
+
+void data_map_insert(data_map_t *map, char *key, char *value) {
+    if (map->data == NULL) {
+        exit(1);
+    }
+    for (int i = 0; i < map->count; i++) {
+        if (strcmp(map->data[i].key, key) == 0) {
+            map->data[i].value = value;
+            return;
+        }
+    }
+    data_map_append(map, key, value);
+}
+
+char *data_map_get(data_map_t *map, const char *key) {
+    for (int i = 0; i < map->count; i++) {
+        if (strcmp(map->data[i].key, key) == 0) {
+            return map->data[i].value;
+        }
+    }
+    return NULL;
+}