added SOC:u getnameinfo

libctru/include/netdb.h

@@ -17,6 +17,21 @@ struct hostent {
 	char	*h_addr;
 };
 
+#define NI_MAXHOST     1025
+#define NI_MAXSERV       32
+
+#define NI_NOFQDN      0x01
+#define NI_NUMERICHOST 0x02
+#define NI_NAMEREQD    0x04
+#define NI_NUMERICSERV 0x00 /* probably 0x08 but services names are never resolved */
+#define NI_DGRAM       0x00 /* probably 0x10 but services names are never resolved */
+
+#define EAI_FAMILY   (-303)
+#define EAI_MEMORY   (-304)
+#define EAI_NONAME   (-305)
+#define EAI_SOCKTYPE (-307)
+
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -27,6 +42,10 @@ extern "C" {
 	void		herror(const char *s);
 	const char*	hstrerror(int err);
 
+	int getnameinfo(const struct sockaddr *sa, socklen_t salen,
+		char *host, socklen_t hostlen,
+		char *serv, socklen_t servlen, int flags);
+
 #ifdef __cplusplus
 }
 #endif

libctru/source/services/soc/soc_getnameinfo.c

@@ -0,0 +1,68 @@
+#include "soc_common.h"
+#include <netdb.h>
+#include <3ds/ipc.h>
+#include <3ds/result.h>
+
+int getnameinfo(const struct sockaddr *sa, socklen_t salen, char *host, socklen_t hostlen, char *serv, socklen_t servlen, int flags)
+{
+	int i,tmp_addrlen;
+	u32 *cmdbuf = getThreadCommandBuffer();
+	u32 saved_threadstorage[4];
+	u8 tmpaddr[0x1c]; // sockaddr size for the kernel is 0x1C (sockaddr_in6?)
+
+	if((host == NULL || hostlen == 0) && (serv == NULL || servlen == 0))
+	{
+		return EAI_NONAME;
+	}
+
+	if(sa->sa_family == AF_INET)
+		tmp_addrlen = 8;
+	else
+		tmp_addrlen = 0x1c;
+
+	if(salen < tmp_addrlen) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	tmpaddr[0] = tmp_addrlen;
+	tmpaddr[1] = sa->sa_family;
+	memcpy(&tmpaddr[2], &sa->sa_data, tmp_addrlen-2);
+
+	cmdbuf[0] = IPC_MakeHeader(0x10,4,2); // 0x100102
+	cmdbuf[1] = sizeof(tmpaddr);
+	cmdbuf[2] = hostlen;
+	cmdbuf[3] = servlen;
+	cmdbuf[4] = flags;
+	cmdbuf[5] = IPC_Desc_StaticBuffer(sizeof(tmpaddr),8);
+	cmdbuf[6] = (u32)tmpaddr;
+
+	u32 * staticbufs = getThreadStaticBuffers();
+
+	// Save the thread storage values
+	for(i = 0 ; i < 4 ; ++i)
+		saved_threadstorage[i] = staticbufs[i];
+
+	staticbufs[0] = IPC_Desc_StaticBuffer(hostlen,0);
+	staticbufs[1] = (u32)host;
+	staticbufs[2] = IPC_Desc_StaticBuffer(servlen,0);
+	staticbufs[3] = (u32)serv;
+
+	Result ret = svcSendSyncRequest(SOCU_handle);
+
+	// Restore the thread storage values
+	for(i = 0 ; i < 4 ; ++i)
+		staticbufs[i] = saved_threadstorage[i];
+
+	if(R_FAILED(ret)) {
+		errno = SYNC_ERROR;
+		return ret;
+	}	
+
+	ret = cmdbuf[1];
+	if(R_FAILED(ret)) {
+		errno = SYNC_ERROR;
+		return ret;
+	}
+	return cmdbuf[2];
+}