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authorDenis Vlasenko2007-04-05 20:26:28 +0000
committerDenis Vlasenko2007-04-05 20:26:28 +0000
commit29fe7265b8c1917ebc03283f22a3eb61e9195979 (patch)
tree231771f61046cc95c765fc91f65cff26081d8fab /ipsvd
parent00c2c4868a5bd90fe36beaf9236f23f60cd5e8e1 (diff)
downloadbusybox-29fe7265b8c1917ebc03283f22a3eb61e9195979.zip
busybox-29fe7265b8c1917ebc03283f22a3eb61e9195979.tar.gz
nc: port nc 1.10 to busybox
Diffstat (limited to 'ipsvd')
-rw-r--r--ipsvd/tcpudp.c2
-rw-r--r--ipsvd/udp_io.c163
2 files changed, 0 insertions, 165 deletions
diff --git a/ipsvd/tcpudp.c b/ipsvd/tcpudp.c
index d2e34e3..8c15d4b 100644
--- a/ipsvd/tcpudp.c
+++ b/ipsvd/tcpudp.c
@@ -33,8 +33,6 @@
#include <linux/netfilter_ipv4.h> /* wants <limits.h> */
#include "busybox.h"
-
-#include "udp_io.c"
#include "ipsvd_perhost.h"
#ifdef SSLSVD
diff --git a/ipsvd/udp_io.c b/ipsvd/udp_io.c
deleted file mode 100644
index 592d98b..0000000
--- a/ipsvd/udp_io.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/* Thus far used only by udpsvd.c */
-
-void socket_want_pktinfo(int fd);
-ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
- const struct sockaddr *from, const struct sockaddr *to,
- socklen_t tolen);
-ssize_t recv_from_to(int fd, void *buf, size_t len, int flags,
- struct sockaddr *from, struct sockaddr *to,
- socklen_t sa_size);
-
-/*
- * This asks kernel to let us know dst addr/port of incoming packets
- * We don't check for errors here. Not supported == won't be used
- */
-void
-socket_want_pktinfo(int fd)
-{
-#ifdef IP_PKTINFO
- setsockopt(fd, IPPROTO_IP, IP_PKTINFO, &const_int_1, sizeof(int));
-#endif
-#if ENABLE_FEATURE_IPV6 && defined(IPV6_PKTINFO)
- setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, &const_int_1, sizeof(int));
-#endif
-}
-
-
-#ifdef UNUSED
-ssize_t
-send_to_from(int fd, void *buf, size_t len, int flags,
- const struct sockaddr *from, const struct sockaddr *to,
- socklen_t tolen)
-{
-#ifndef IP_PKTINFO
- return sendto(fd, buf, len, flags, to, tolen);
-#else
- struct iovec iov[1];
- struct msghdr msg;
- char cbuf[sizeof(struct in_pktinfo)
-#if ENABLE_FEATURE_IPV6 && defined(IPV6_PKTINFO)
- | sizeof(struct in6_pktinfo) /* (a|b) is poor man's max(a,b) */
-#endif
- ];
- struct cmsghdr* cmsgptr;
-
- if (from->sa_family != AF_INET
-#if ENABLE_FEATURE_IPV6
- && from->sa_family != AF_INET6
-#endif
- ) {
- /* ANY local address */
- return sendto(fd, buf, len, flags, to, tolen);
- }
-
- /* man recvmsg and man cmsg is needed to make sense of code below */
-
- iov[0].iov_base = buf;
- iov[0].iov_len = len;
-
- memset(cbuf, 0, sizeof(cbuf));
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = (void *)(struct sockaddr *)to; /* or compiler will annoy us */
- msg.msg_namelen = tolen;
- msg.msg_iov = iov;
- msg.msg_iovlen = 1;
- msg.msg_control = cbuf;
- msg.msg_controllen = sizeof(cbuf);
- msg.msg_flags = flags;
-
- cmsgptr = CMSG_FIRSTHDR(&msg);
- if (to->sa_family == AF_INET && from->sa_family == AF_INET) {
- struct in_pktinfo *pktptr;
- cmsgptr->cmsg_level = IPPROTO_IP;
- cmsgptr->cmsg_type = IP_PKTINFO;
- cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
- pktptr = (struct in_pktinfo *)(CMSG_DATA(cmsgptr));
- /* pktptr->ipi_ifindex = 0; -- already done by memset(cbuf...) */
- pktptr->ipi_spec_dst = ((struct sockaddr_in*)from)->sin_addr;
- }
-#if ENABLE_FEATURE_IPV6 && defined(IPV6_PKTINFO)
- else if (to->sa_family == AF_INET6 && from->sa_family == AF_INET6) {
- struct in6_pktinfo *pktptr;
- cmsgptr->cmsg_level = IPPROTO_IPV6;
- cmsgptr->cmsg_type = IPV6_PKTINFO;
- cmsgptr->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
- pktptr = (struct in6_pktinfo *)(CMSG_DATA(cmsgptr));
- /* pktptr->ipi6_ifindex = 0; -- already done by memset(cbuf...) */
- pktptr->ipi6_addr = ((struct sockaddr_in6*)from)->sin6_addr;
- }
-#endif
- return sendmsg(fd, &msg, flags);
-#endif
-}
-#endif /* UNUSED */
-
-/* NB: this will never set port# in 'to'!
- * _Only_ IP/IPv6 address part of 'to' is _maybe_ modified.
- * Typical usage is to preinit 'to' with "default" value
- * before calling recv_from_to(). */
-ssize_t
-recv_from_to(int fd, void *buf, size_t len, int flags,
- struct sockaddr *from, struct sockaddr *to,
- socklen_t sa_size)
-{
-#ifndef IP_PKTINFO
- return recvfrom(fd, buf, len, flags, from, &sa_size);
-#else
- /* man recvmsg and man cmsg is needed to make sense of code below */
- struct iovec iov[1];
- union {
- char cmsg[CMSG_SPACE(sizeof(struct in_pktinfo))];
- char cmsg6[CMSG_SPACE(sizeof(struct in6_pktinfo))];
- } u;
- struct cmsghdr *cmsgptr;
- struct msghdr msg;
- socklen_t recv_length;
-
- iov[0].iov_base = buf;
- iov[0].iov_len = len;
-
- memset(&msg, 0, sizeof(msg));
- msg.msg_name = (struct sockaddr *)from;
- msg.msg_namelen = sa_size;
- msg.msg_iov = iov;
- msg.msg_iovlen = 1;
- msg.msg_control = &u;
- msg.msg_controllen = sizeof(u);
-
- recv_length = recvmsg(fd, &msg, flags);
- if (recv_length < 0)
- return recv_length;
-
- /* Here we try to retrieve destination IP and memorize it */
- for (cmsgptr = CMSG_FIRSTHDR(&msg);
- cmsgptr != NULL;
- cmsgptr = CMSG_NXTHDR(&msg, cmsgptr)
- ) {
- if (cmsgptr->cmsg_level == IPPROTO_IP
- && cmsgptr->cmsg_type == IP_PKTINFO
- ) {
-#define pktinfo(cmsgptr) ( (struct in_pktinfo*)(CMSG_DATA(cmsgptr)) )
- to->sa_family = AF_INET;
- ((struct sockaddr_in*)to)->sin_addr = pktinfo(cmsgptr)->ipi_addr;
- /* ((struct sockaddr_in*)to)->sin_port = 123; */
-#undef pktinfo
- break;
- }
-#if ENABLE_FEATURE_IPV6 && defined(IPV6_PKTINFO)
- if (cmsgptr->cmsg_level == IPPROTO_IPV6
- && cmsgptr->cmsg_type == IPV6_PKTINFO
- ) {
-#define pktinfo(cmsgptr) ( (struct in6_pktinfo*)(CMSG_DATA(cmsgptr)) )
- to->sa_family = AF_INET6;
- ((struct sockaddr_in6*)to)->sin6_addr = pktinfo(cmsgptr)->ipi6_addr;
- /* ((struct sockaddr_in6*)to)->sin6_port = 123; */
-#undef pktinfo
- break;
- }
-#endif
- }
- return recv_length;
-#endif
-}