working commit

2026-05-07 11:24:50 +02:00
parent 9540ac05d4
commit a5d78c09a6
18 changed files with 2192 additions and 3226 deletions
@@ -0,0 +1,76 @@
+
+extern "C" {
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+}
+
+#include <cstring>
+#include <expected>
+#include <string>
+
+#include <resolver.hpp>
+
+Address::Address(std::string iaddress, int ifamily) {
+        address = iaddress;
+        family = ifamily;
+}
+
+int Address::GetFamily() {
+        return family;
+}
+
+std::string Address::GetAddress() {
+        return address;
+}
+
+std::expected<Address, std::string> Resolver::Resolve(std::string hostname) {
+        struct sockaddr_in sa;
+        if (inet_pton(AF_INET, hostname.data(), &(sa.sin_addr)) == 1) {
+                family = AF_INET;
+                return Address(hostname, AF_INET);
+        }
+        if (inet_pton(AF_INET6, hostname.data(), &(sa.sin_addr)) == 1) {
+                return Address(hostname, AF_INET6);
+        }
+
+        struct addrinfo hints, *res;
+        memset(&hints, 0, sizeof(hints));
+        hints.ai_family = AF_UNSPEC;
+        hints.ai_socktype = SOCK_DGRAM;
+
+        int status = 0;
+        if ((status = getaddrinfo(hostname.data(), NULL, &hints, &res)) != 0) {
+                std::string error = gai_strerror(status);
+                return std::unexpected("Resolve adress error: " + error);
+        }
+        struct addrinfo* p;
+        char ipaddr[INET6_ADDRSTRLEN + 1];
+        for (p = res; p != NULL; p = p->ai_next) {
+                if (p->ai_family == AF_INET) {
+                        struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
+                        void* addr = &(ipv4->sin_addr);
+                        if (inet_ntop(p->ai_family, addr, ipaddr, sizeof(ipaddr)) == NULL) {
+                                int errnocopy = errno;
+                                std::string error = std::strerror(errnocopy);
+                                return std::unexpected("Cannot conver address: " + error);
+                        }
+                        std::string address(ipaddr);
+                        return Address(address, AF_INET);;
+                }
+        }
+        for (p = res; p != NULL; p = p->ai_next) {
+                if (p->ai_family == AF_INET6) {
+                        struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
+                        void* addr = &(ipv6->sin6_addr);
+                        if (inet_ntop(p->ai_family, addr, ipaddr, sizeof(ipaddr)) == NULL) {
+                                int errnocopy = errno;
+                                std::string error = std::strerror(errnocopy);
+                                return std::unexpected("Cannot conver address: " + error);
+                        }
+                        std::string address(ipaddr);
+                        return Address(address, AF_INET6);
+                }
+        }
+        return std::unexpected("Cannot resolve hostname " + hostname);
+}