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-rw-r--r--source3/lib/socket_wrapper/config.m422
-rw-r--r--source3/lib/socket_wrapper/socket_wrapper.c891
-rw-r--r--source3/lib/socket_wrapper/socket_wrapper.h104
3 files changed, 1017 insertions, 0 deletions
diff --git a/source3/lib/socket_wrapper/config.m4 b/source3/lib/socket_wrapper/config.m4
new file mode 100644
index 0000000000..42212abc7f
--- /dev/null
+++ b/source3/lib/socket_wrapper/config.m4
@@ -0,0 +1,22 @@
+AC_ARG_ENABLE(socket-wrapper,
+[ --enable-socket-wrapper Turn on socket wrapper library (default=no)])
+
+DEFAULT_TEST_TARGET=test-noswrap
+HAVE_SOCKET_WRAPPER=no
+
+if eval "test x$developer = xyes"; then
+ enable_socket_wrapper=yes
+fi
+
+if eval "test x$enable_socket_wrapper = xyes"; then
+ AC_DEFINE(SOCKET_WRAPPER,1,[Use socket wrapper library])
+ DEFAULT_TEST_TARGET=test-swrap
+ HAVE_SOCKET_WRAPPER=yes
+
+ # this is only used for samba3
+ SOCKET_WRAPPER_OBJS="lib/socket_wrapper/socket_wrapper.o"
+fi
+
+AC_SUBST(DEFAULT_TEST_TARGET)
+AC_SUBST(HAVE_SOCKET_WRAPPER)
+AC_SUBST(SOCKET_WRAPPER_OBJS)
diff --git a/source3/lib/socket_wrapper/socket_wrapper.c b/source3/lib/socket_wrapper/socket_wrapper.c
new file mode 100644
index 0000000000..af774e1927
--- /dev/null
+++ b/source3/lib/socket_wrapper/socket_wrapper.c
@@ -0,0 +1,891 @@
+/*
+ Socket wrapper library. Passes all socket communication over
+ unix domain sockets if the environment variable SOCKET_WRAPPER_DIR
+ is set.
+ Copyright (C) Jelmer Vernooij 2005
+ Copyright (C) Stefan Metzmacher 2006
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifdef _SAMBA_BUILD_
+
+#define SOCKET_WRAPPER_NOT_REPLACE
+#include "includes.h"
+/*
+#include "system/network.h"
+#include "system/filesys.h"
+*/
+#ifndef _DLINKLIST_H
+#include "lib/util/dlinklist.h"
+#endif
+
+#ifdef malloc
+#undef malloc
+#endif
+#ifdef calloc
+#undef calloc
+#endif
+#ifdef strdup
+#undef strdup
+#endif
+
+#else /* _SAMBA_BUILD_ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <errno.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+
+#error "dlinklist.h missing"
+
+#endif
+
+/* LD_PRELOAD doesn't work yet, so REWRITE_CALLS is all we support
+ * for now */
+#define REWRITE_CALLS
+
+#ifdef REWRITE_CALLS
+#define real_accept accept
+#define real_connect connect
+#define real_bind bind
+#define real_getpeername getpeername
+#define real_getsockname getsockname
+#define real_getsockopt getsockopt
+#define real_setsockopt setsockopt
+#define real_recvfrom recvfrom
+#define real_sendto sendto
+#define real_recv recv
+#define real_send send
+#define real_socket socket
+#define real_close close
+#endif
+
+/* we need to use a very terse format here as IRIX 6.4 silently
+ truncates names to 16 chars, so if we use a longer name then we
+ can't tell which port a packet came from with recvfrom()
+
+ with this format we have 8 chars left for the directory name
+*/
+#define SOCKET_FORMAT "%c%02X%04X"
+#define SOCKET_TYPE_CHAR_TCP 'T'
+#define SOCKET_TYPE_CHAR_UDP 'U'
+
+static struct sockaddr *sockaddr_dup(const void *data, socklen_t len)
+{
+ struct sockaddr *ret = (struct sockaddr *)malloc(len);
+ memcpy(ret, data, len);
+ return ret;
+}
+
+struct socket_info
+{
+ int fd;
+
+ int family;
+ int type;
+ int protocol;
+ int bound;
+ int bcast;
+
+ char *path;
+ char *tmp_path;
+
+ struct sockaddr *myname;
+ socklen_t myname_len;
+
+ struct sockaddr *peername;
+ socklen_t peername_len;
+
+ struct socket_info *prev, *next;
+};
+
+static struct socket_info *sockets;
+
+
+static const char *socket_wrapper_dir(void)
+{
+ const char *s = getenv("SOCKET_WRAPPER_DIR");
+ if (s == NULL) {
+ return NULL;
+ }
+ if (strncmp(s, "./", 2) == 0) {
+ s += 2;
+ }
+ return s;
+}
+
+static const char *socket_wrapper_dump_dir(void)
+{
+ const char *s = getenv("SOCKET_WRAPPER_DUMP_DIR");
+
+ if (!socket_wrapper_dir()) {
+ return NULL;
+ }
+
+ if (s == NULL) {
+ return NULL;
+ }
+ if (strncmp(s, "./", 2) == 0) {
+ s += 2;
+ }
+ return s;
+}
+
+static unsigned int socket_wrapper_default_iface(void)
+{
+ const char *s = getenv("SOCKET_WRAPPER_DEFAULT_IFACE");
+ if (s) {
+ unsigned int iface;
+ if (sscanf(s, "%u", &iface) == 1) {
+ if (iface >= 1 && iface <= 0xFF) {
+ return iface;
+ }
+ }
+ }
+
+ return 1;/* 127.0.0.1 */
+}
+
+static int convert_un_in(const struct sockaddr_un *un, struct sockaddr_in *in, socklen_t *len)
+{
+ unsigned int iface;
+ unsigned int prt;
+ const char *p;
+ char type;
+
+ if ((*len) < sizeof(struct sockaddr_in)) {
+ return 0;
+ }
+
+ p = strrchr(un->sun_path, '/');
+ if (p) p++; else p = un->sun_path;
+
+ if (sscanf(p, SOCKET_FORMAT, &type, &iface, &prt) != 3) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (type != SOCKET_TYPE_CHAR_TCP && type != SOCKET_TYPE_CHAR_UDP) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (iface == 0 || iface > 0xFF) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (prt > 0xFFFF) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ in->sin_family = AF_INET;
+ in->sin_addr.s_addr = htonl((127<<24) | iface);
+ in->sin_port = htons(prt);
+
+ *len = sizeof(struct sockaddr_in);
+ return 0;
+}
+
+static int convert_in_un_remote(struct socket_info *si, const struct sockaddr_in *in, struct sockaddr_un *un,
+ int *bcast)
+{
+ char u_type = '\0';
+ char b_type = '\0';
+ char a_type = '\0';
+ char type = '\0';
+ unsigned int addr= ntohl(in->sin_addr.s_addr);
+ unsigned int prt = ntohs(in->sin_port);
+ unsigned int iface;
+ int is_bcast = 0;
+
+ if (bcast) *bcast = 0;
+
+ if (prt == 0) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ switch (si->type) {
+ case SOCK_STREAM:
+ u_type = SOCKET_TYPE_CHAR_TCP;
+ break;
+ case SOCK_DGRAM:
+ u_type = SOCKET_TYPE_CHAR_UDP;
+ a_type = SOCKET_TYPE_CHAR_UDP;
+ b_type = SOCKET_TYPE_CHAR_UDP;
+ break;
+ }
+
+ if (a_type && addr == 0xFFFFFFFF) {
+ /* 255.255.255.255 only udp */
+ is_bcast = 2;
+ type = a_type;
+ iface = socket_wrapper_default_iface();
+ } else if (b_type && addr == 0x7FFFFFFF) {
+ /* 127.255.255.255 only udp */
+ is_bcast = 1;
+ type = b_type;
+ iface = socket_wrapper_default_iface();
+ } else if ((addr & 0xFFFFFF00) == 0x7F000000) {
+ /* 127.0.0.X */
+ is_bcast = 0;
+ type = u_type;
+ iface = (addr & 0x000000FF);
+ } else {
+ errno = ENETUNREACH;
+ return -1;
+ }
+
+ if (bcast) *bcast = is_bcast;
+
+ if (is_bcast) {
+ snprintf(un->sun_path, sizeof(un->sun_path), "%s/EINVAL",
+ socket_wrapper_dir());
+ /* the caller need to do more processing */
+ return 0;
+ }
+
+ snprintf(un->sun_path, sizeof(un->sun_path), "%s/"SOCKET_FORMAT,
+ socket_wrapper_dir(), type, iface, prt);
+
+ return 0;
+}
+
+static int convert_in_un_alloc(struct socket_info *si, const struct sockaddr_in *in, struct sockaddr_un *un,
+ int *bcast)
+{
+ char u_type = '\0';
+ char d_type = '\0';
+ char b_type = '\0';
+ char a_type = '\0';
+ char type = '\0';
+ unsigned int addr= ntohl(in->sin_addr.s_addr);
+ unsigned int prt = ntohs(in->sin_port);
+ unsigned int iface;
+ struct stat st;
+ int is_bcast = 0;
+
+ if (bcast) *bcast = 0;
+
+ switch (si->type) {
+ case SOCK_STREAM:
+ u_type = SOCKET_TYPE_CHAR_TCP;
+ d_type = SOCKET_TYPE_CHAR_TCP;
+ break;
+ case SOCK_DGRAM:
+ u_type = SOCKET_TYPE_CHAR_UDP;
+ d_type = SOCKET_TYPE_CHAR_UDP;
+ a_type = SOCKET_TYPE_CHAR_UDP;
+ b_type = SOCKET_TYPE_CHAR_UDP;
+ break;
+ }
+
+ if (addr == 0) {
+ /* 0.0.0.0 */
+ is_bcast = 0;
+ type = d_type;
+ iface = socket_wrapper_default_iface();
+ } else if (a_type && addr == 0xFFFFFFFF) {
+ /* 255.255.255.255 only udp */
+ is_bcast = 2;
+ type = a_type;
+ iface = socket_wrapper_default_iface();
+ } else if (b_type && addr == 0x7FFFFFFF) {
+ /* 127.255.255.255 only udp */
+ is_bcast = 1;
+ type = b_type;
+ iface = socket_wrapper_default_iface();
+ } else if ((addr & 0xFFFFFF00) == 0x7F000000) {
+ /* 127.0.0.X */
+ is_bcast = 0;
+ type = u_type;
+ iface = (addr & 0x000000FF);
+ } else {
+ errno = EADDRNOTAVAIL;
+ return -1;
+ }
+
+ if (bcast) *bcast = is_bcast;
+
+ if (prt == 0) {
+ /* handle auto-allocation of ephemeral ports */
+ for (prt = 5001; prt < 10000; prt++) {
+ snprintf(un->sun_path, sizeof(un->sun_path), "%s/"SOCKET_FORMAT,
+ socket_wrapper_dir(), type, iface, prt);
+ if (stat(un->sun_path, &st) == 0) continue;
+
+ ((struct sockaddr_in *)si->myname)->sin_port = htons(prt);
+ return 0;
+ }
+ errno = ENFILE;
+ return -1;
+ }
+
+ snprintf(un->sun_path, sizeof(un->sun_path), "%s/"SOCKET_FORMAT,
+ socket_wrapper_dir(), type, iface, prt);
+ return 0;
+}
+
+static struct socket_info *find_socket_info(int fd)
+{
+ struct socket_info *i;
+ for (i = sockets; i; i = i->next) {
+ if (i->fd == fd)
+ return i;
+ }
+
+ return NULL;
+}
+
+static int sockaddr_convert_to_un(struct socket_info *si, const struct sockaddr *in_addr, socklen_t in_len,
+ struct sockaddr_un *out_addr, int alloc_sock, int *bcast)
+{
+ if (!out_addr)
+ return 0;
+
+ out_addr->sun_family = AF_UNIX;
+
+ switch (in_addr->sa_family) {
+ case AF_INET:
+ switch (si->type) {
+ case SOCK_STREAM:
+ case SOCK_DGRAM:
+ break;
+ default:
+ errno = ESOCKTNOSUPPORT;
+ return -1;
+ }
+ if (alloc_sock) {
+ return convert_in_un_alloc(si, (const struct sockaddr_in *)in_addr, out_addr, bcast);
+ } else {
+ return convert_in_un_remote(si, (const struct sockaddr_in *)in_addr, out_addr, bcast);
+ }
+ default:
+ break;
+ }
+
+ errno = EAFNOSUPPORT;
+ return -1;
+}
+
+static int sockaddr_convert_from_un(const struct socket_info *si,
+ const struct sockaddr_un *in_addr,
+ socklen_t un_addrlen,
+ int family,
+ struct sockaddr *out_addr,
+ socklen_t *_out_addrlen)
+{
+ socklen_t out_addrlen;
+
+ if (out_addr == NULL || _out_addrlen == NULL)
+ return 0;
+
+ if (un_addrlen == 0) {
+ *_out_addrlen = 0;
+ return 0;
+ }
+
+ out_addrlen = *_out_addrlen;
+ if (out_addrlen > un_addrlen) {
+ out_addrlen = un_addrlen;
+ }
+
+ switch (family) {
+ case AF_INET:
+ switch (si->type) {
+ case SOCK_STREAM:
+ case SOCK_DGRAM:
+ break;
+ default:
+ errno = ESOCKTNOSUPPORT;
+ return -1;
+ }
+ return convert_un_in(in_addr, (struct sockaddr_in *)out_addr, _out_addrlen);
+ default:
+ break;
+ }
+
+ errno = EAFNOSUPPORT;
+ return -1;
+}
+
+enum swrap_packet_type {
+ SWRAP_CONNECT,
+ SWRAP_ACCEPT,
+ SWRAP_RECVFROM,
+ SWRAP_SENDTO,
+ SWRAP_RECV,
+ SWRAP_SEND,
+ SWRAP_CLOSE
+};
+
+static void swrap_dump_packet(struct socket_info *si, const struct sockaddr *addr,
+ enum swrap_packet_type type,
+ const void *buf, size_t len, ssize_t ret)
+{
+ if (!socket_wrapper_dump_dir()) {
+ return;
+ }
+
+}
+
+_PUBLIC_ int swrap_socket(int family, int type, int protocol)
+{
+ struct socket_info *si;
+ int fd;
+
+ if (!socket_wrapper_dir()) {
+ return real_socket(family, type, protocol);
+ }
+
+ switch (family) {
+ case AF_INET:
+ break;
+ case AF_UNIX:
+ return real_socket(family, type, protocol);
+ default:
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+
+ fd = real_socket(AF_UNIX, type, 0);
+
+ if (fd == -1) return -1;
+
+ si = calloc(1, sizeof(struct socket_info));
+
+ si->family = family;
+ si->type = type;
+ si->protocol = protocol;
+ si->fd = fd;
+
+ DLIST_ADD(sockets, si);
+
+ return si->fd;
+}
+
+_PUBLIC_ int swrap_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
+{
+ struct socket_info *parent_si, *child_si;
+ int fd;
+ struct sockaddr_un un_addr;
+ socklen_t un_addrlen = sizeof(un_addr);
+ struct sockaddr_un un_my_addr;
+ socklen_t un_my_addrlen = sizeof(un_my_addr);
+ struct sockaddr my_addr;
+ socklen_t my_addrlen = sizeof(my_addr);
+ int ret;
+
+ parent_si = find_socket_info(s);
+ if (!parent_si) {
+ return real_accept(s, addr, addrlen);
+ }
+
+ memset(&un_addr, 0, sizeof(un_addr));
+ memset(&un_my_addr, 0, sizeof(un_my_addr));
+ memset(&my_addr, 0, sizeof(my_addr));
+
+ ret = real_accept(s, (struct sockaddr *)&un_addr, &un_addrlen);
+ if (ret == -1) return ret;
+
+ fd = ret;
+
+ ret = sockaddr_convert_from_un(parent_si, &un_addr, un_addrlen,
+ parent_si->family, addr, addrlen);
+ if (ret == -1) {
+ close(fd);
+ return ret;
+ }
+
+ child_si = malloc(sizeof(struct socket_info));
+ memset(child_si, 0, sizeof(*child_si));
+
+ child_si->fd = fd;
+ child_si->family = parent_si->family;
+ child_si->type = parent_si->type;
+ child_si->protocol = parent_si->protocol;
+ child_si->bound = 1;
+
+ ret = real_getsockname(fd, (struct sockaddr *)&un_my_addr, &un_my_addrlen);
+ if (ret == -1) {
+ free(child_si);
+ close(fd);
+ return ret;
+ }
+
+ ret = sockaddr_convert_from_un(child_si, &un_my_addr, un_my_addrlen,
+ child_si->family, &my_addr, &my_addrlen);
+ if (ret == -1) {
+ free(child_si);
+ close(fd);
+ return ret;
+ }
+
+ child_si->myname_len = my_addrlen;
+ child_si->myname = sockaddr_dup(&my_addr, my_addrlen);
+
+ child_si->peername_len = *addrlen;
+ child_si->peername = sockaddr_dup(addr, *addrlen);
+
+ DLIST_ADD(sockets, child_si);
+
+ swrap_dump_packet(child_si, addr, SWRAP_ACCEPT, NULL, 0, 0);
+
+ return fd;
+}
+
+/* using sendto() or connect() on an unbound socket would give the
+ recipient no way to reply, as unlike UDP and TCP, a unix domain
+ socket can't auto-assign emphemeral port numbers, so we need to
+ assign it here */
+static int swrap_auto_bind(struct socket_info *si)
+{
+ struct sockaddr_un un_addr;
+ struct sockaddr_in in;
+ int i;
+ char type;
+ int ret;
+ int port;
+ struct stat st;
+
+ un_addr.sun_family = AF_UNIX;
+
+ switch (si->type) {
+ case SOCK_STREAM:
+ type = SOCKET_TYPE_CHAR_TCP;
+ break;
+ case SOCK_DGRAM:
+ type = SOCKET_TYPE_CHAR_UDP;
+ break;
+ default:
+ errno = ESOCKTNOSUPPORT;
+ return -1;
+ }
+
+ for (i=0;i<1000;i++) {
+ port = 10000 + i;
+ snprintf(un_addr.sun_path, sizeof(un_addr.sun_path),
+ "%s/"SOCKET_FORMAT, socket_wrapper_dir(),
+ type, socket_wrapper_default_iface(), port);
+ if (stat(un_addr.sun_path, &st) == 0) continue;
+
+ ret = real_bind(si->fd, (struct sockaddr *)&un_addr, sizeof(un_addr));
+ if (ret == -1) return ret;
+
+ si->tmp_path = strdup(un_addr.sun_path);
+ si->bound = 1;
+ break;
+ }
+ if (i == 1000) {
+ errno = ENFILE;
+ return -1;
+ }
+
+ memset(&in, 0, sizeof(in));
+ in.sin_family = AF_INET;
+ in.sin_port = htons(port);
+ in.sin_addr.s_addr = htonl(127<<24 | socket_wrapper_default_iface());
+
+ si->myname_len = sizeof(in);
+ si->myname = sockaddr_dup(&in, si->myname_len);
+ si->bound = 1;
+ return 0;
+}
+
+
+_PUBLIC_ int swrap_connect(int s, const struct sockaddr *serv_addr, socklen_t addrlen)
+{
+ int ret;
+ struct sockaddr_un un_addr;
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_connect(s, serv_addr, addrlen);
+ }
+
+ if (si->bound == 0) {
+ ret = swrap_auto_bind(si);
+ if (ret == -1) return -1;
+ }
+
+ ret = sockaddr_convert_to_un(si, (const struct sockaddr *)serv_addr, addrlen, &un_addr, 0, NULL);
+ if (ret == -1) return -1;
+
+ ret = real_connect(s, (struct sockaddr *)&un_addr,
+ sizeof(struct sockaddr_un));
+
+ /* to give better errors */
+ if (ret == -1 && errno == ENOENT) {
+ errno = EHOSTUNREACH;
+ }
+
+ if (ret == 0) {
+ si->peername_len = addrlen;
+ si->peername = sockaddr_dup(serv_addr, addrlen);
+ }
+
+ swrap_dump_packet(si, serv_addr, SWRAP_CONNECT, NULL, 0, ret);
+
+ return ret;
+}
+
+_PUBLIC_ int swrap_bind(int s, const struct sockaddr *myaddr, socklen_t addrlen)
+{
+ int ret;
+ struct sockaddr_un un_addr;
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_bind(s, myaddr, addrlen);
+ }
+
+ si->myname_len = addrlen;
+ si->myname = sockaddr_dup(myaddr, addrlen);
+
+ ret = sockaddr_convert_to_un(si, (const struct sockaddr *)myaddr, addrlen, &un_addr, 1, &si->bcast);
+ if (ret == -1) return -1;
+
+ unlink(un_addr.sun_path);
+
+ ret = real_bind(s, (struct sockaddr *)&un_addr,
+ sizeof(struct sockaddr_un));
+
+ if (ret == 0) {
+ si->bound = 1;
+ }
+
+ return ret;
+}
+
+_PUBLIC_ int swrap_getpeername(int s, struct sockaddr *name, socklen_t *addrlen)
+{
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_getpeername(s, name, addrlen);
+ }
+
+ if (!si->peername)
+ {
+ errno = ENOTCONN;
+ return -1;
+ }
+
+ memcpy(name, si->peername, si->peername_len);
+ *addrlen = si->peername_len;
+
+ return 0;
+}
+
+_PUBLIC_ int swrap_getsockname(int s, struct sockaddr *name, socklen_t *addrlen)
+{
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_getsockname(s, name, addrlen);
+ }
+
+ memcpy(name, si->myname, si->myname_len);
+ *addrlen = si->myname_len;
+
+ return 0;
+}
+
+_PUBLIC_ int swrap_getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen)
+{
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_getsockopt(s, level, optname, optval, optlen);
+ }
+
+ if (level == SOL_SOCKET) {
+ return real_getsockopt(s, level, optname, optval, optlen);
+ }
+
+ errno = ENOPROTOOPT;
+ return -1;
+}
+
+_PUBLIC_ int swrap_setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen)
+{
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_setsockopt(s, level, optname, optval, optlen);
+ }
+
+ if (level == SOL_SOCKET) {
+ return real_setsockopt(s, level, optname, optval, optlen);
+ }
+
+ switch (si->family) {
+ case AF_INET:
+ return 0;
+ default:
+ errno = ENOPROTOOPT;
+ return -1;
+ }
+}
+
+_PUBLIC_ ssize_t swrap_recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen)
+{
+ struct sockaddr_un un_addr;
+ socklen_t un_addrlen = sizeof(un_addr);
+ int ret;
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_recvfrom(s, buf, len, flags, from, fromlen);
+ }
+
+ /* irix 6.4 forgets to null terminate the sun_path string :-( */
+ memset(&un_addr, 0, sizeof(un_addr));
+ ret = real_recvfrom(s, buf, len, flags, (struct sockaddr *)&un_addr, &un_addrlen);
+ if (ret == -1)
+ return ret;
+
+ if (sockaddr_convert_from_un(si, &un_addr, un_addrlen,
+ si->family, from, fromlen) == -1) {
+ return -1;
+ }
+
+ swrap_dump_packet(si, from, SWRAP_RECVFROM, buf, len, ret);
+
+ return ret;
+}
+
+
+_PUBLIC_ ssize_t swrap_sendto(int s, const void *buf, size_t len, int flags, const struct sockaddr *to, socklen_t tolen)
+{
+ struct sockaddr_un un_addr;
+ int ret;
+ struct socket_info *si = find_socket_info(s);
+ int bcast = 0;
+
+ if (!si) {
+ return real_sendto(s, buf, len, flags, to, tolen);
+ }
+
+ if (si->bound == 0) {
+ ret = swrap_auto_bind(si);
+ if (ret == -1) return -1;
+ }
+
+ ret = sockaddr_convert_to_un(si, to, tolen, &un_addr, 0, &bcast);
+ if (ret == -1) return -1;
+
+ if (bcast) {
+ struct stat st;
+ unsigned int iface;
+ unsigned int prt = ntohs(((const struct sockaddr_in *)to)->sin_port);
+ char type;
+
+ type = SOCKET_TYPE_CHAR_UDP;
+
+ for(iface=0; iface <= 0xFF; iface++) {
+ snprintf(un_addr.sun_path, sizeof(un_addr.sun_path), "%s/"SOCKET_FORMAT,
+ socket_wrapper_dir(), type, iface, prt);
+ if (stat(un_addr.sun_path, &st) != 0) continue;
+
+ /* ignore the any errors in broadcast sends */
+ real_sendto(s, buf, len, flags, (struct sockaddr *)&un_addr, sizeof(un_addr));
+ }
+
+ swrap_dump_packet(si, to, SWRAP_SENDTO, buf, len, len);
+
+ return len;
+ }
+
+ ret = real_sendto(s, buf, len, flags, (struct sockaddr *)&un_addr, sizeof(un_addr));
+
+ /* to give better errors */
+ if (ret == -1 && errno == ENOENT) {
+ errno = EHOSTUNREACH;
+ }
+
+ swrap_dump_packet(si, to, SWRAP_SENDTO, buf, len, ret);
+
+ return ret;
+}
+
+_PUBLIC_ ssize_t swrap_recv(int s, void *buf, size_t len, int flags)
+{
+ int ret;
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_recv(s, buf, len, flags);
+ }
+
+ ret = real_recv(s, buf, len, flags);
+ if (ret == -1)
+ return ret;
+
+ swrap_dump_packet(si, NULL, SWRAP_RECV, buf, len, ret);
+
+ return ret;
+}
+
+
+_PUBLIC_ ssize_t swrap_send(int s, const void *buf, size_t len, int flags)
+{
+ int ret;
+ struct socket_info *si = find_socket_info(s);
+
+ if (!si) {
+ return real_send(s, buf, len, flags);
+ }
+
+ ret = real_send(s, buf, len, flags);
+ if (ret == -1)
+ return ret;
+
+ swrap_dump_packet(si, NULL, SWRAP_SEND, buf, len, ret);
+
+ return ret;
+}
+
+_PUBLIC_ int swrap_close(int fd)
+{
+ struct socket_info *si = find_socket_info(fd);
+
+ if (si) {
+ DLIST_REMOVE(sockets, si);
+
+ swrap_dump_packet(si, NULL, SWRAP_CLOSE, NULL, 0, 0);
+
+ free(si->path);
+ free(si->myname);
+ free(si->peername);
+ if (si->tmp_path) {
+ unlink(si->tmp_path);
+ free(si->tmp_path);
+ }
+ free(si);
+ }
+
+ return real_close(fd);
+}
diff --git a/source3/lib/socket_wrapper/socket_wrapper.h b/source3/lib/socket_wrapper/socket_wrapper.h
new file mode 100644
index 0000000000..23a261faaf
--- /dev/null
+++ b/source3/lib/socket_wrapper/socket_wrapper.h
@@ -0,0 +1,104 @@
+/*
+ Copyright (C) Jelmer Vernooij 2005 <jelmer@samba.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __SOCKET_WRAPPER_H__
+#define __SOCKET_WRAPPER_H__
+
+int swrap_socket(int family, int type, int protocol);
+int swrap_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
+int swrap_connect(int s, const struct sockaddr *serv_addr, socklen_t addrlen);
+int swrap_bind(int s, const struct sockaddr *myaddr, socklen_t addrlen);
+int swrap_getpeername(int s, struct sockaddr *name, socklen_t *addrlen);
+int swrap_getsockname(int s, struct sockaddr *name, socklen_t *addrlen);
+int swrap_getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen);
+int swrap_setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen);
+ssize_t swrap_recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
+ssize_t swrap_sendto(int s, const void *buf, size_t len, int flags, const struct sockaddr *to, socklen_t tolen);
+ssize_t swrap_recv(int s, void *buf, size_t len, int flags);
+ssize_t swrap_send(int s, const void *buf, size_t len, int flags);
+int swrap_close(int);
+
+#ifdef SOCKET_WRAPPER_REPLACE
+
+#ifdef accept
+#undef accept
+#endif
+#define accept(s,addr,addrlen) swrap_accept(s,addr,addrlen)
+
+#ifdef connect
+#undef connect
+#endif
+#define connect(s,serv_addr,addrlen) swrap_connect(s,serv_addr,addrlen)
+
+#ifdef bind
+#undef bind
+#endif
+#define bind(s,myaddr,addrlen) swrap_bind(s,myaddr,addrlen)
+
+#ifdef getpeername
+#undef getpeername
+#endif
+#define getpeername(s,name,addrlen) swrap_getpeername(s,name,addrlen)
+
+#ifdef getsockname
+#undef getsockname
+#endif
+#define getsockname(s,name,addrlen) swrap_getsockname(s,name,addrlen)
+
+#ifdef getsockopt
+#undef getsockopt
+#endif
+#define getsockopt(s,level,optname,optval,optlen) swrap_getsockopt(s,level,optname,optval,optlen)
+
+#ifdef setsockopt
+#undef setsockopt
+#endif
+#define setsockopt(s,level,optname,optval,optlen) swrap_setsockopt(s,level,optname,optval,optlen)
+
+#ifdef recvfrom
+#undef recvfrom
+#endif
+#define recvfrom(s,buf,len,flags,from,fromlen) swrap_recvfrom(s,buf,len,flags,from,fromlen)
+
+#ifdef sendto
+#undef sendto
+#endif
+#define sendto(s,buf,len,flags,to,tolen) swrap_sendto(s,buf,len,flags,to,tolen)
+
+#ifdef recv
+#undef recv
+#endif
+#define recv(s,buf,len,flags) swrap_recv(s,buf,len,flags)
+
+#ifdef send
+#undef send
+#endif
+#define send(s,buf,len,flags) swrap_send(s,buf,len,flags)
+
+#ifdef socket
+#undef socket
+#endif
+#define socket(domain,type,protocol) swrap_socket(domain,type,protocol)
+
+#ifdef close
+#undef close
+#endif
+#define close(s) swrap_close(s)
+#endif
+
+#endif /* __SOCKET_WRAPPER_H__ */
generated by cgit (git 2.34.1) at 2024-12-11 08:32:39 +0000