1 files changed, 112 insertions, 0 deletions
diff --git a/missing_d/getaddrinfo.c b/missing_d/getaddrinfo.c
new file mode 100644
index 00000000..677f27d0
--- /dev/null
+++ b/missing_d/getaddrinfo.c
@@ -0,0 +1,112 @@
+#ifndef HAVE_SOCKETS
+#error getaddrinfo.c included by mistake! no socket support!
+#else
+#include <sys/types.h>
+#include <sys/socket.h>
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
+#include "getaddrinfo.h"
+
+void
+freeaddrinfo(struct addrinfo *res)
+{
+	if (res->ai_addr != NULL)
+		free(res->ai_addr);
+	free(res);
+}
+
+int
+getaddrinfo(const char *hostname, const char *portname,
+	struct addrinfo *hints, struct addrinfo **res)
+{
+	struct addrinfo *out;
+	if (res == NULL)
+		return -1;
+
+	out = (struct addrinfo *) malloc(sizeof(*out));
+	if (out == NULL) {
+		*res = NULL;
+		return -1;
+	}
+	memset(out, '\0', sizeof(*out));
+
+	out->ai_addr = (struct sockaddr *) malloc(sizeof(struct sockaddr_in));
+	if (out->ai_addr == NULL) {
+		free(out);
+		*res = NULL;
+		return -1;
+	}
+
+	out->ai_socktype = SOCK_STREAM;
+	if (hints != NULL) {
+		if (hints->ai_socktype)
+			out->ai_socktype = hints->ai_socktype;
+		if (hints->ai_protocol)
+			out->ai_protocol = hints->ai_protocol;
+	}
+
+	if (out->ai_protocol == 0) {
+		switch (out->ai_socktype) {
+		case SOCK_STREAM:
+			out->ai_protocol = IPPROTO_TCP;
+			break;
+		case SOCK_DGRAM:
+			out->ai_protocol = IPPROTO_UDP;
+			break;
+		case SOCK_RAW:
+			out->ai_protocol = IPPROTO_RAW;
+			break;
+		}
+	}
+
+	out->ai_addrlen = sizeof(struct sockaddr_in);
+	memset(out->ai_addr, '\0', sizeof(struct sockaddr_in));
+
+	if (hostname != NULL) {
+		struct hostent *he;
+		he = gethostbyname(hostname);
+		if (he != NULL && he->h_addr_list != NULL) {
+			((struct sockaddr_in *)out->ai_addr)->sin_addr.s_addr
+				= ((struct in_addr *)he->h_addr_list[0])->s_addr;
+		} else {
+			freeaddrinfo(out);
+			return -1;
+		}
+	} else {
+		if (!(out->ai_flags & AI_PASSIVE))
+			((struct sockaddr_in *)out->ai_addr)->sin_addr.s_addr
+							= htonl(INADDR_ANY);
+	}
+	((struct sockaddr_in *)out->ai_addr)->sin_family = AF_INET;
+	out->ai_family = AF_INET;
+
+	if (portname != NULL && *portname) {
+		long portnum;
+		char *end;
+		portnum = strtol(portname, &end, 10);
+		if (*end == '\0' && portnum > 0 && portnum < 65536) {
+			((struct sockaddr_in *)out->ai_addr)->sin_port
+							= htons(portnum);
+		} else {
+			struct servent *se;
+			se = getservbyname(portname, NULL);
+			if (se != NULL) {
+				((struct sockaddr_in *)out->ai_addr)->sin_port
+							= se->s_port;
+			}
+		}
+	}
+
+	*res = out;
+
+	return 0;
+}
+#endif