X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=net.c;h=b2c9c43a81ad356ec021373c12d5c764fa5b76f4;hp=5d7c3fef7d15a5c2c58d380f5f0412bb493deb4a;hb=f41688f647116d0a17513cc86c60cc9729da6502;hpb=35bbbf736c75f13c2bf9f6d6bdc2feecd42072cb

diff --git a/net.c b/net.c
index 5d7c3fef..b2c9c43a 100644
--- a/net.c
+++ b/net.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2008 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -19,11 +19,13 @@
 #define AI_ADDRCONFIG 0
 #endif
 
+#include <dirent.h>
 
 #include "para.h"
 #include "error.h"
 #include "net.h"
 #include "string.h"
+#include "fd.h"
 
 
 /** Information about one encrypted connection. */
@@ -147,10 +149,11 @@ int makesock(unsigned l3type, unsigned l4type, int passive,
 {
 	struct addrinfo *local = NULL, *src,
 			*remote = NULL, *dst, hints;
-	char		*port = make_message("%u", port_number);
 	int		rc, on = 1, sockfd = -1,
 			socktype = sock_type(l4type);
+	char port[6]; /* port number has at most 5 digits */
 
+	sprintf(port, "%u", port_number);
 	/* Set up address hint structure */
 	memset(&hints, 0, sizeof(hints));
 	hints.ai_family = l3type;
@@ -171,7 +174,7 @@ int makesock(unsigned l3type, unsigned l4type, int passive,
 	if ((rc = getaddrinfo(host, port, &hints, passive ? &local : &remote))) {
 		PARA_ERROR_LOG("can not resolve %s address %s#%s: %s.\n",
 				layer4_name(l4type),
-				host?  : (passive? "[loopback]" : "[localhost]"),
+				host? host : (passive? "[loopback]" : "[localhost]"),
 				port, gai_strerror(rc));
 		return -E_ADDRESS_LOOKUP;
 	}
@@ -225,7 +228,7 @@ get_next_src:
 
 	if (src == NULL && dst == NULL) {
 		PARA_ERROR_LOG("can not create %s socket %s#%s.\n",
-			layer4_name(l4type), host?  : (passive?
+			layer4_name(l4type), host? host : (passive?
 			"[loopback]" : "[localhost]"), port);
 		return -ERRNO_TO_PARA_ERROR(errno);
 	}
@@ -322,29 +325,26 @@ char *remote_name(int sockfd)
 	return __get_sock_name(sockfd, getpeername);
 }
 
-/*
- * Send out a buffer, resend on short writes.
- *
- * \param fd The file descriptor.
- * \param buf The buffer to be sent.
- * \param len The length of \a buf.
+/**
+ * Extract IPv4 or IPv6-mapped-IPv4 address from sockaddr_storage.
+ * \param ss Container of IPv4/6 address
+ * \return Extracted IPv4 address (different from 0) or 0 if unsuccessful.
  *
- * \return Standard. In any case, the number of bytes actually sent is stored
- * in \a len.
+ * \sa RFC 3493
  */
-static int sendall(int fd, const char *buf, size_t *len)
+struct in_addr extract_v4_addr(const struct sockaddr_storage *ss)
 {
-	size_t total = *len;
+	struct in_addr ia = {.s_addr = 0};
 
-	assert(total);
-	*len = 0;
-	while (*len < total) {
-		int ret = send(fd, buf + *len, total - *len, 0);
-		if (ret == -1)
-			return -ERRNO_TO_PARA_ERROR(errno);
-		*len += ret;
+	if (ss->ss_family == AF_INET)
+		 ia.s_addr = ((struct sockaddr_in *)ss)->sin_addr.s_addr;
+	if (ss->ss_family == AF_INET6) {
+		const struct in6_addr v6_addr = ((struct sockaddr_in6 *)ss)->sin6_addr;
+
+		if (IN6_IS_ADDR_V4MAPPED(&v6_addr))
+			memcpy(&ia.s_addr, &(v6_addr.s6_addr[12]), 4);
 	}
-	return 1;
+	return ia;
 }
 
 /**
@@ -366,7 +366,7 @@ int send_bin_buffer(int fd, const char *buf, size_t len)
 	crypt_function *cf = NULL;
 
 	if (!len)
-		PARA_CRIT_LOG("%s", "len == 0\n");
+		PARA_CRIT_LOG("len == 0\n");
 	if (fd + 1 <= cda_size)
 		cf = crypt_data_array[fd].send;
 	if (cf) {
@@ -374,10 +374,10 @@ int send_bin_buffer(int fd, const char *buf, size_t len)
 		/* RC4 may write more than len to the output buffer */
 		unsigned char *outbuf = para_malloc(ROUND_UP(len, 8));
 		(*cf)(len, (unsigned char *)buf, outbuf, private);
-		ret = sendall(fd, (char *)outbuf, &len);
+		ret = write_all(fd, (char *)outbuf, &len);
 		free(outbuf);
 	} else
-		ret = sendall(fd, buf, &len);
+		ret = write_all(fd, buf, &len);
 	return ret;
 }