-/*
+/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Tim Potter 2000-2001
-
+ Copyright (C) Jeremy Allison 1992-2007
+
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
+ the Free Software Foundation; either version 3 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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-/* the last IP received from */
-struct in_addr lastip;
+/* the following 3 client_*() functions are nasty ways of allowing
+ some generic functions to get info that really should be hidden in
+ particular modules */
+static int client_fd = -1;
+/* What to print out on a client disconnect error. */
+static char client_ip_string[INET6_ADDRSTRLEN];
-/* the last port received from */
-int lastport=0;
+/****************************************************************************
+ Pritn out an IPv4 or IPv6 address from a struct sockaddr_storage.
+****************************************************************************/
-int smb_read_error = 0;
+char *print_sockaddr(char *dest,
+ size_t destlen,
+ struct sockaddr_storage *psa)
+{
+ if (destlen > 0) {
+ dest[0] = '\0';
+ }
+#ifdef AF_INET6
+ if (psa->ss_family == AF_INET6) {
+ inet_ntop(AF_INET6,
+ &((struct sockaddr_in6 *)psa)->sin6_addr,
+ dest,
+ destlen);
+ }
+#endif
+ if (psa->ss_family == AF_INET) {
+ inet_ntop(AF_INET,
+ &((struct sockaddr_in *)psa)->sin_addr,
+ dest,
+ destlen);
+ }
+ return dest;
+}
+
+void client_setfd(int fd)
+{
+ client_fd = fd;
+ safe_strcpy(client_ip_string,
+ get_peer_addr(client_fd),
+ sizeof(client_ip_string)-1);
+}
static char *get_socket_addr(int fd)
{
- struct sockaddr sa;
- struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ struct sockaddr_storage sa;
socklen_t length = sizeof(sa);
- static fstring addr_buf;
+ static char addr_buf[INET6_ADDRSTRLEN];
- fstrcpy(addr_buf,"0.0.0.0");
+ /* Ok, returning a hard coded IPv4 address
+ * is bogus, but it's just as bogus as a
+ * zero IPv6 address. No good choice here.
+ */
+
+ safe_strcpy(addr_buf, "0.0.0.0", sizeof(addr_buf)-1);
if (fd == -1) {
return addr_buf;
}
-
- if (getsockname(fd, &sa, &length) < 0) {
- DEBUG(0,("getsockname failed. Error was %s\n", strerror(errno) ));
+
+ if (getsockname(fd, (struct sockaddr *)&sa, &length) < 0) {
+ DEBUG(0,("getsockname failed. Error was %s\n",
+ strerror(errno) ));
return addr_buf;
}
-
- fstrcpy(addr_buf,(char *)inet_ntoa(sockin->sin_addr));
-
- return addr_buf;
+
+ return print_sockaddr(addr_buf, sizeof(addr_buf), &sa);
}
static int get_socket_port(int fd)
{
- struct sockaddr sa;
- struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ struct sockaddr_storage sa;
socklen_t length = sizeof(sa);
- if (fd == -1)
+ if (fd == -1) {
return -1;
-
- if (getsockname(fd, &sa, &length) < 0) {
- DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno) ));
+ }
+
+ if (getsockname(fd, (struct sockaddr *)&sa, &length) < 0) {
+ DEBUG(0,("getpeername failed. Error was %s\n",
+ strerror(errno) ));
return -1;
}
-
- return ntohs(sockin->sin_port);
+
+#ifdef AF_INET6
+ if (sa.ss_family == AF_INET6) {
+ return ntohs(((struct sockaddr_in6 *)&sa)->sin6_port);
+ }
+#endif
+ if (sa.ss_family == AF_INET) {
+ return ntohs(((struct sockaddr_in *)&sa)->sin_port);
+ }
+ return -1;
+}
+
+char *client_name(void)
+{
+ return get_peer_name(client_fd,False);
}
+char *client_addr(void)
+{
+ return get_peer_addr(client_fd);
+}
+
+char *client_socket_addr(void)
+{
+ return get_socket_addr(client_fd);
+}
+
+int client_socket_port(void)
+{
+ return get_socket_port(client_fd);
+}
+
+int smb_read_error = 0;
+
/****************************************************************************
Determine if a file descriptor is in fact a socket.
****************************************************************************/
} smb_socket_option;
static const smb_socket_option socket_options[] = {
- {"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL},
- {"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL},
- {"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL},
+ {"SO_KEEPALIVE", SOL_SOCKET, SO_KEEPALIVE, 0, OPT_BOOL},
+ {"SO_REUSEADDR", SOL_SOCKET, SO_REUSEADDR, 0, OPT_BOOL},
+ {"SO_BROADCAST", SOL_SOCKET, SO_BROADCAST, 0, OPT_BOOL},
#ifdef TCP_NODELAY
- {"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},
+ {"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},
+#endif
+#ifdef TCP_KEEPCNT
+ {"TCP_KEEPCNT", IPPROTO_TCP, TCP_KEEPCNT, 0, OPT_INT},
+#endif
+#ifdef TCP_KEEPIDLE
+ {"TCP_KEEPIDLE", IPPROTO_TCP, TCP_KEEPIDLE, 0, OPT_INT},
+#endif
+#ifdef TCP_KEEPINTVL
+ {"TCP_KEEPINTVL", IPPROTO_TCP, TCP_KEEPINTVL, 0, OPT_INT},
#endif
#ifdef IPTOS_LOWDELAY
- {"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},
+ {"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},
#endif
#ifdef IPTOS_THROUGHPUT
- {"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},
+ {"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},
#endif
#ifdef SO_REUSEPORT
- {"SO_REUSEPORT", SOL_SOCKET, SO_REUSEPORT, 0, OPT_BOOL},
+ {"SO_REUSEPORT", SOL_SOCKET, SO_REUSEPORT, 0, OPT_BOOL},
#endif
#ifdef SO_SNDBUF
- {"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},
+ {"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},
#endif
#ifdef SO_RCVBUF
- {"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},
+ {"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},
#endif
#ifdef SO_SNDLOWAT
- {"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},
+ {"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},
#endif
#ifdef SO_RCVLOWAT
- {"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
+ {"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
#endif
#ifdef SO_SNDTIMEO
- {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
+ {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
#endif
#ifdef SO_RCVTIMEO
- {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
+ {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
+#endif
+#ifdef TCP_FASTACK
+ {"TCP_FASTACK", IPPROTO_TCP, TCP_FASTACK, 0, OPT_INT},
#endif
{NULL,0,0,0,0}};
socklen_t vlen = 4;
const smb_socket_option *p = &socket_options[0];
- /* wrapped in if statement to prevent streams leak in SCO Openserver 5.0 */
+ /* wrapped in if statement to prevent streams
+ * leak in SCO Openserver 5.0 */
/* reported on samba-technical --jerry */
if ( DEBUGLEVEL >= 5 ) {
- for (; p->name != NULL; p++) {
- if (getsockopt(s, p->level, p->option, (void *)&value, &vlen) == -1) {
- DEBUG(5,("Could not test socket option %s.\n", p->name));
- } else {
- DEBUG(5,("socket option %s = %d\n",p->name,value));
+ for (; p->name != NULL; p++) {
+ if (getsockopt(s, p->level, p->option,
+ (void *)&value, &vlen) == -1) {
+ DEBUG(5,("Could not test socket option %s.\n",
+ p->name));
+ } else {
+ DEBUG(5,("socket option %s = %d\n",
+ p->name,value));
}
}
}
case OPT_BOOL:
case OPT_INT:
ret = setsockopt(fd,socket_options[i].level,
- socket_options[i].option,(char *)&value,sizeof(int));
+ socket_options[i].option,
+ (char *)&value,sizeof(int));
break;
case OPT_ON:
if (got_value)
- DEBUG(0,("syntax error - %s does not take a value\n",tok));
+ DEBUG(0,("syntax error - %s "
+ "does not take a value\n",tok));
{
int on = socket_options[i].value;
ret = setsockopt(fd,socket_options[i].level,
- socket_options[i].option,(char *)&on,sizeof(int));
+ socket_options[i].option,
+ (char *)&on,sizeof(int));
}
- break;
+ break;
+ }
+
+ if (ret != 0) {
+ DEBUG(0,("Failed to set socket option %s (Error %s)\n",
+ tok, strerror(errno) ));
}
-
- if (ret != 0)
- DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok, strerror(errno) ));
}
print_socket_options(fd);
Read from a socket.
****************************************************************************/
-ssize_t read_udp_socket(int fd,char *buf,size_t len)
+ssize_t read_udp_v4_socket(int fd,
+ char *buf,
+ size_t len,
+ struct sockaddr_storage *psa)
{
ssize_t ret;
- struct sockaddr_in sock;
- socklen_t socklen = sizeof(sock);
+ socklen_t socklen = sizeof(*psa);
+ struct sockaddr_in *si = (struct sockaddr_in *)psa;
- memset((char *)&sock,'\0',socklen);
- memset((char *)&lastip,'\0',sizeof(lastip));
- ret = (ssize_t)sys_recvfrom(fd,buf,len,0,(struct sockaddr *)&sock,&socklen);
+ memset((char *)psa,'\0',socklen);
+
+ ret = (ssize_t)sys_recvfrom(fd,buf,len,0,
+ (struct sockaddr *)psa,&socklen);
if (ret <= 0) {
- DEBUG(2,("read socket failed. ERRNO=%s\n",strerror(errno)));
- return(0);
+ /* Don't print a low debug error for a non-blocking socket. */
+ if (errno == EAGAIN) {
+ DEBUG(10,("read_udp_v4_socket: returned EAGAIN\n"));
+ } else {
+ DEBUG(2,("read_udp_v4_socket: failed. errno=%s\n",
+ strerror(errno)));
+ }
+ return 0;
}
- lastip = sock.sin_addr;
- lastport = ntohs(sock.sin_port);
+ if (psa->ss_family != AF_INET) {
+ DEBUG(2,("read_udp_v4_socket: invalid address family %d "
+ "(not IPv4)\n", (int)psa->ss_family));
+ return 0;
+ }
- DEBUG(10,("read_udp_socket: lastip %s lastport %d read: %lu\n",
- inet_ntoa(lastip), lastport, (unsigned long)ret));
+ DEBUG(10,("read_udp_v4_socket: ip %s port %d read: %lu\n",
+ inet_ntoa(si->sin_addr),
+ si->sin_port,
+ (unsigned long)ret));
- return(ret);
+ return ret;
}
/****************************************************************************
time_out = timeout in milliseconds
****************************************************************************/
-ssize_t read_socket_with_timeout(int fd,char *buf,size_t mincnt,size_t maxcnt,unsigned int time_out)
+ssize_t read_socket_with_timeout(int fd,
+ char *buf,
+ size_t mincnt,
+ size_t maxcnt,
+ unsigned int time_out)
{
fd_set fds;
int selrtn;
ssize_t readret;
size_t nread = 0;
struct timeval timeout;
-
+
/* just checking .... */
if (maxcnt <= 0)
return(0);
-
+
smb_read_error = 0;
-
+
/* Blocking read */
- if (time_out <= 0) {
- if (mincnt == 0) mincnt = maxcnt;
-
+ if (time_out == 0) {
+ if (mincnt == 0) {
+ mincnt = maxcnt;
+ }
+
while (nread < mincnt) {
readret = sys_read(fd, buf + nread, maxcnt - nread);
-
+
if (readret == 0) {
- DEBUG(5,("read_socket_with_timeout: blocking read. EOF from client.\n"));
+ DEBUG(5,("read_socket_with_timeout: "
+ "blocking read. EOF from client.\n"));
smb_read_error = READ_EOF;
return -1;
}
-
+
if (readret == -1) {
- DEBUG(0,("read_socket_with_timeout: read error = %s.\n", strerror(errno) ));
+ if (fd == client_fd) {
+ /* Try and give an error message
+ * saying what client failed. */
+ DEBUG(0,("read_socket_with_timeout: "
+ "client %s read error = %s.\n",
+ client_ip_string,
+ strerror(errno) ));
+ } else {
+ DEBUG(0,("read_socket_with_timeout: "
+ "read error = %s.\n",
+ strerror(errno) ));
+ }
smb_read_error = READ_ERROR;
return -1;
}
}
return((ssize_t)nread);
}
-
+
/* Most difficult - timeout read */
- /* If this is ever called on a disk file and
+ /* If this is ever called on a disk file and
mincnt is greater then the filesize then
- system performance will suffer severely as
+ system performance will suffer severely as
select always returns true on disk files */
-
+
/* Set initial timeout */
timeout.tv_sec = (time_t)(time_out / 1000);
timeout.tv_usec = (long)(1000 * (time_out % 1000));
-
- for (nread=0; nread < mincnt; ) {
+
+ for (nread=0; nread < mincnt; ) {
FD_ZERO(&fds);
FD_SET(fd,&fds);
-
+
selrtn = sys_select_intr(fd+1,&fds,NULL,NULL,&timeout);
-
+
/* Check if error */
if (selrtn == -1) {
/* something is wrong. Maybe the socket is dead? */
- DEBUG(0,("read_socket_with_timeout: timeout read. select error = %s.\n", strerror(errno) ));
+ if (fd == client_fd) {
+ /* Try and give an error message saying
+ * what client failed. */
+ DEBUG(0,("read_socket_with_timeout: timeout "
+ "read for client %s. select error = %s.\n",
+ client_ip_string, strerror(errno) ));
+ } else {
+ DEBUG(0,("read_socket_with_timeout: timeout "
+ "read. select error = %s.\n",
+ strerror(errno) ));
+ }
smb_read_error = READ_ERROR;
return -1;
}
-
+
/* Did we timeout ? */
if (selrtn == 0) {
- DEBUG(10,("read_socket_with_timeout: timeout read. select timed out.\n"));
+ DEBUG(10,("read_socket_with_timeout: timeout read. "
+ "select timed out.\n"));
smb_read_error = READ_TIMEOUT;
return -1;
}
-
+
readret = sys_read(fd, buf+nread, maxcnt-nread);
-
+
if (readret == 0) {
/* we got EOF on the file descriptor */
- DEBUG(5,("read_socket_with_timeout: timeout read. EOF from client.\n"));
+ DEBUG(5,("read_socket_with_timeout: timeout read. "
+ "EOF from client.\n"));
smb_read_error = READ_EOF;
return -1;
}
-
+
if (readret == -1) {
/* the descriptor is probably dead */
- DEBUG(0,("read_socket_with_timeout: timeout read. read error = %s.\n", strerror(errno) ));
+ if (fd == client_fd) {
+ /* Try and give an error message
+ * saying what client failed. */
+ DEBUG(0,("read_socket_with_timeout: timeout "
+ "read to client %s. read error = %s.\n",
+ client_ip_string, strerror(errno) ));
+ } else {
+ DEBUG(0,("read_socket_with_timeout: timeout "
+ "read. read error = %s.\n",
+ strerror(errno) ));
+ }
smb_read_error = READ_ERROR;
return -1;
}
-
+
nread += readret;
}
-
+
/* Return the number we got */
return (ssize_t)nread;
}
/****************************************************************************
- Read data from the client, reading exactly N bytes.
+ Read data from the client, reading exactly N bytes.
****************************************************************************/
ssize_t read_data(int fd,char *buffer,size_t N)
{
ssize_t ret;
- size_t total=0;
-
- smb_read_error = 0;
-
- while (total < N) {
- ret = sys_read(fd,buffer + total,N - total);
-
- if (ret == 0) {
- DEBUG(10,("read_data: read of %d returned 0. Error = %s\n", (int)(N - total), strerror(errno) ));
- smb_read_error = READ_EOF;
- return 0;
- }
-
- if (ret == -1) {
- DEBUG(0,("read_data: read failure for %d. Error = %s\n", (int)(N - total), strerror(errno) ));
- smb_read_error = READ_ERROR;
- return -1;
- }
- total += ret;
- }
- return (ssize_t)total;
-}
-
-/****************************************************************************
- Read data from a socket, reading exactly N bytes.
-****************************************************************************/
+ size_t total=0;
-static ssize_t read_socket_data(int fd,char *buffer,size_t N)
-{
- ssize_t ret;
- size_t total=0;
-
smb_read_error = 0;
while (total < N) {
ret = sys_read(fd,buffer + total,N - total);
if (ret == 0) {
- DEBUG(10,("read_socket_data: recv of %d returned 0. Error = %s\n", (int)(N - total), strerror(errno) ));
+ DEBUG(10,("read_data: read of %d returned 0. "
+ "Error = %s\n",
+ (int)(N - total), strerror(errno) ));
smb_read_error = READ_EOF;
return 0;
}
if (ret == -1) {
- DEBUG(0,("read_socket_data: recv failure for %d. Error = %s\n", (int)(N - total), strerror(errno) ));
+ if (fd == client_fd) {
+ /* Try and give an error message saying
+ * what client failed. */
+ DEBUG(0,("read_data: read failure for %d "
+ "bytes to client %s. Error = %s\n",
+ (int)(N - total),
+ client_ip_string,
+ strerror(errno) ));
+ } else {
+ DEBUG(0,("read_data: read failure for %d. "
+ "Error = %s\n",
+ (int)(N - total),
+ strerror(errno) ));
+ }
smb_read_error = READ_ERROR;
return -1;
}
Write data to a fd.
****************************************************************************/
-ssize_t write_data(int fd,char *buffer,size_t N)
+ssize_t write_data(int fd, const char *buffer, size_t N)
{
size_t total=0;
ssize_t ret;
ret = sys_write(fd,buffer + total,N - total);
if (ret == -1) {
- DEBUG(0,("write_data: write failure. Error = %s\n", strerror(errno) ));
+ if (fd == client_fd) {
+ /* Try and give an error message saying
+ * what client failed. */
+ DEBUG(0,("write_data: write failure in "
+ "writing to client %s. Error %s\n",
+ client_ip_string, strerror(errno) ));
+ } else {
+ DEBUG(0,("write_data: write failure. "
+ "Error = %s\n", strerror(errno) ));
+ }
return -1;
}
- if (ret == 0)
- return total;
- total += ret;
- }
- return (ssize_t)total;
-}
-
-/****************************************************************************
- Write data to a socket - use send rather than write.
-****************************************************************************/
-
-static ssize_t write_socket_data(int fd,char *buffer,size_t N)
-{
- size_t total=0;
- ssize_t ret;
-
- while (total < N) {
- ret = sys_send(fd,buffer + total,N - total,0);
-
- if (ret == -1) {
- DEBUG(0,("write_socket_data: write failure. Error = %s\n", strerror(errno) ));
- return -1;
- }
- if (ret == 0)
+ if (ret == 0) {
return total;
+ }
total += ret;
}
return (ssize_t)total;
}
-/****************************************************************************
- Write to a socket.
-****************************************************************************/
-
-ssize_t write_socket(int fd,char *buf,size_t len)
-{
- ssize_t ret=0;
-
- DEBUG(6,("write_socket(%d,%d)\n",fd,(int)len));
- ret = write_socket_data(fd,buf,len);
-
- DEBUG(6,("write_socket(%d,%d) wrote %d\n",fd,(int)len,(int)ret));
- if(ret <= 0)
- DEBUG(0,("write_socket: Error writing %d bytes to socket %d: ERRNO = %s\n",
- (int)len, fd, strerror(errno) ));
-
- return(ret);
-}
-
/****************************************************************************
Send a keepalive packet (rfc1002).
****************************************************************************/
buf[0] = SMBkeepalive;
buf[1] = buf[2] = buf[3] = 0;
- return(write_socket_data(client,(char *)buf,4) == 4);
+ return(write_data(client,(char *)buf,4) == 4);
}
-
/****************************************************************************
Read 4 bytes of a smb packet and return the smb length of the packet.
Store the result in the buffer.
Timeout is in milliseconds.
****************************************************************************/
-static ssize_t read_smb_length_return_keepalive(int fd,char *inbuf,unsigned int timeout)
+static ssize_t read_smb_length_return_keepalive(int fd,
+ char *inbuf,
+ unsigned int timeout)
{
ssize_t len=0;
int msg_type;
BOOL ok = False;
while (!ok) {
- if (timeout > 0)
- ok = (read_socket_with_timeout(fd,inbuf,4,4,timeout) == 4);
- else
- ok = (read_socket_data(fd,inbuf,4) == 4);
-
- if (!ok)
- return(-1);
+ if (timeout > 0) {
+ ok = (read_socket_with_timeout(fd,inbuf,4,4,timeout)
+ == 4);
+ } else {
+ ok = (read_data(fd,inbuf,4) == 4);
+ }
+ if (!ok) {
+ return -1;
+ }
len = smb_len(inbuf);
msg_type = CVAL(inbuf,0);
- if (msg_type == SMBkeepalive)
+ if (msg_type == SMBkeepalive) {
DEBUG(5,("Got keepalive packet\n"));
+ }
}
DEBUG(10,("got smb length of %lu\n",(unsigned long)len));
Timeout is in milliseconds.
****************************************************************************/
-ssize_t read_smb_length(int fd,char *inbuf,unsigned int timeout)
+ssize_t read_smb_length(int fd, char *inbuf, unsigned int timeout)
{
ssize_t len;
/****************************************************************************
Read an smb from a fd. Note that the buffer *MUST* be of size
BUFFER_SIZE+SAFETY_MARGIN.
- The timeout is in milliseconds.
+ The timeout is in milliseconds.
This function will return on receipt of a session keepalive packet.
+ maxlen is the max number of bytes to return, not including the 4 byte
+ length. If zero it means BUFFER_SIZE+SAFETY_MARGIN limit.
Doesn't check the MAC on signed packets.
****************************************************************************/
-BOOL receive_smb_raw(int fd,char *buffer, unsigned int timeout)
+ssize_t receive_smb_raw(int fd,
+ char *buffer,
+ unsigned int timeout,
+ size_t maxlen)
{
ssize_t len,ret;
smb_read_error = 0;
- memset(buffer,'\0',smb_size + 100);
-
len = read_smb_length_return_keepalive(fd,buffer,timeout);
if (len < 0) {
DEBUG(10,("receive_smb_raw: length < 0!\n"));
if (smb_read_error == 0)
smb_read_error = READ_ERROR;
- return False;
+ return -1;
}
/*
*/
if (len > (BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE)) {
- DEBUG(0,("Invalid packet length! (%lu bytes).\n",(unsigned long)len));
+ DEBUG(0,("Invalid packet length! (%lu bytes).\n",
+ (unsigned long)len));
if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
/*
if (smb_read_error == 0)
smb_read_error = READ_ERROR;
- return False;
+ return -1;
}
}
if(len > 0) {
- ret = read_socket_data(fd,buffer+4,len);
+ if (maxlen) {
+ len = MIN(len,maxlen);
+ }
+
+ if (timeout > 0) {
+ ret = read_socket_with_timeout(fd,
+ buffer+4,
+ len,
+ len,
+ timeout);
+ } else {
+ ret = read_data(fd,buffer+4,len);
+ }
+
if (ret != len) {
- if (smb_read_error == 0)
+ if (smb_read_error == 0) {
smb_read_error = READ_ERROR;
- return False;
+ }
+ return -1;
}
-
- /* not all of samba3 properly checks for packet-termination of strings. This
- ensures that we don't run off into empty space. */
+
+ /* not all of samba3 properly checks for packet-termination
+ * of strings. This ensures that we don't run off into
+ * empty space. */
SSVAL(buffer+4,len, 0);
}
- return True;
+ return len;
+}
+
+static ssize_t receive_smb_raw_talloc(TALLOC_CTX *mem_ctx, int fd,
+ char **buffer, unsigned int timeout)
+{
+ char lenbuf[4];
+ ssize_t len,ret;
+
+ smb_read_error = 0;
+
+ len = read_smb_length_return_keepalive(fd, lenbuf, timeout);
+ if (len < 0) {
+ DEBUG(10,("receive_smb_raw: length < 0!\n"));
+
+ /*
+ * Correct fix. smb_read_error may have already been
+ * set. Only set it here if not already set. Global
+ * variables still suck :-). JRA.
+ */
+
+ if (smb_read_error == 0)
+ smb_read_error = READ_ERROR;
+ return -1;
+ }
+
+ /*
+ * A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
+ * of header. Don't print the error if this fits.... JRA.
+ */
+
+ if (len > (BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE)) {
+ DEBUG(0,("Invalid packet length! (%lu bytes).\n",
+ (unsigned long)len));
+ if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
+
+ /*
+ * Correct fix. smb_read_error may have already been
+ * set. Only set it here if not already set. Global
+ * variables still suck :-). JRA.
+ */
+
+ if (smb_read_error == 0)
+ smb_read_error = READ_ERROR;
+ return -1;
+ }
+ }
+
+ /*
+ * The +4 here can't wrap, we've checked the length above already.
+ */
+
+ *buffer = TALLOC_ARRAY(mem_ctx, char, len+4);
+
+ if (*buffer == NULL) {
+ DEBUG(0, ("Could not allocate inbuf of length %d\n",
+ (int)len+4));
+ if (smb_read_error == 0)
+ smb_read_error = READ_ERROR;
+ return -1;
+ }
+
+ memcpy(*buffer, lenbuf, sizeof(lenbuf));
+
+ if(len > 0) {
+ if (timeout > 0) {
+ ret = read_socket_with_timeout(fd,(*buffer)+4, len,
+ len, timeout);
+ } else {
+ ret = read_data(fd, (*buffer)+4, len);
+ }
+
+ if (ret != len) {
+ if (smb_read_error == 0) {
+ smb_read_error = READ_ERROR;
+ }
+ return -1;
+ }
+ }
+
+ return len + 4;
}
/****************************************************************************
Checks the MAC on signed packets.
****************************************************************************/
-BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
+BOOL receive_smb(int fd, char *buffer, unsigned int timeout)
{
- if (!receive_smb_raw(fd, buffer, timeout)) {
+ if (receive_smb_raw(fd, buffer, timeout, 0) < 0) {
return False;
}
/* Check the incoming SMB signature. */
if (!srv_check_sign_mac(buffer, True)) {
- DEBUG(0, ("receive_smb: SMB Signature verification failed on incoming packet!\n"));
- if (smb_read_error == 0)
+ DEBUG(0, ("receive_smb: SMB Signature verification "
+ "failed on incoming packet!\n"));
+ if (smb_read_error == 0) {
smb_read_error = READ_BAD_SIG;
+ }
return False;
- };
+ }
+
+ return True;
+}
+
+ssize_t receive_smb_talloc(TALLOC_CTX *mem_ctx, int fd, char **buffer,
+ unsigned int timeout)
+{
+ ssize_t len;
+
+ len = receive_smb_raw_talloc(mem_ctx, fd, buffer, timeout);
+
+ if (len < 0) {
+ return -1;
+ }
- return(True);
+ /* Check the incoming SMB signature. */
+ if (!srv_check_sign_mac(*buffer, True)) {
+ DEBUG(0, ("receive_smb: SMB Signature verification failed on "
+ "incoming packet!\n"));
+ if (smb_read_error == 0) {
+ smb_read_error = READ_BAD_SIG;
+ }
+ return -1;
+ }
+
+ return len;
}
/****************************************************************************
Send an smb to a fd.
****************************************************************************/
-BOOL send_smb(int fd,char *buffer)
+BOOL send_smb(int fd, char *buffer)
{
size_t len;
size_t nwritten=0;
len = smb_len(buffer) + 4;
while (nwritten < len) {
- ret = write_socket(fd,buffer+nwritten,len - nwritten);
+ ret = write_data(fd,buffer+nwritten,len - nwritten);
if (ret <= 0) {
DEBUG(0,("Error writing %d bytes to client. %d. (%s)\n",
(int)len,(int)ret, strerror(errno) ));
Open a socket of the specified type, port, and address for incoming data.
****************************************************************************/
-int open_socket_in( int type, int port, int dlevel, uint32 socket_addr, BOOL rebind )
+int open_socket_in(int type,
+ int port,
+ int dlevel,
+ uint32 socket_addr,
+ BOOL rebind )
{
struct sockaddr_in sock;
int res;
/* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
{
int val = rebind ? 1 : 0;
- if( setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)) == -1 ) {
+ if( setsockopt(res,SOL_SOCKET,SO_REUSEADDR,
+ (char *)&val,sizeof(val)) == -1 ) {
if( DEBUGLVL( dlevel ) ) {
dbgtext( "open_socket_in(): setsockopt: " );
- dbgtext( "SO_REUSEADDR = %s ", val?"True":"False" );
+ dbgtext( "SO_REUSEADDR = %s ",
+ val?"True":"False" );
dbgtext( "on port %d failed ", port );
dbgtext( "with error = %s\n", strerror(errno) );
}
}
#ifdef SO_REUSEPORT
- if( setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val)) == -1 ) {
+ if( setsockopt(res,SOL_SOCKET,SO_REUSEPORT,
+ (char *)&val,sizeof(val)) == -1 ) {
if( DEBUGLVL( dlevel ) ) {
dbgtext( "open_socket_in(): setsockopt: ");
- dbgtext( "SO_REUSEPORT = %s ", val?"True":"False" );
+ dbgtext( "SO_REUSEPORT = %s ",
+ val?"True":"False" );
dbgtext( "on port %d failed ", port );
dbgtext( "with error = %s\n", strerror(errno) );
}
/* now we've got a socket - we need to bind it */
if( bind( res, (struct sockaddr *)&sock, sizeof(sock) ) == -1 ) {
- if( DEBUGLVL(dlevel) && (port == SMB_PORT1 || port == SMB_PORT2 || port == NMB_PORT) ) {
+ if( DEBUGLVL(dlevel) && (port == SMB_PORT1 ||
+ port == SMB_PORT2 || port == NMB_PORT) ) {
dbgtext( "bind failed on port %d ", port );
- dbgtext( "socket_addr = %s.\n", inet_ntoa( sock.sin_addr ) );
+ dbgtext( "socket_addr = %s.\n",
+ inet_ntoa( sock.sin_addr ) );
dbgtext( "Error = %s\n", strerror(errno) );
}
- close( res );
- return( -1 );
+ close( res );
+ return -1;
}
DEBUG( 10, ( "bind succeeded on port %d\n", port ) );
if (type != SOCK_STREAM)
return(res);
-
+
memset((char *)&sock_out,'\0',sizeof(sock_out));
putip((char *)&sock_out.sin_addr,(char *)addr);
-
+
sock_out.sin_port = htons( port );
sock_out.sin_family = PF_INET;
set_blocking(res,False);
DEBUG(3,("Connecting to %s at port %d\n",inet_ntoa(*addr),port));
-
+
/* and connect it to the destination */
connect_again:
if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
errno == EAGAIN)) {
- DEBUG(1,("timeout connecting to %s:%d\n",inet_ntoa(*addr),port));
+ DEBUG(1,("timeout connecting to %s:%d\n",
+ inet_ntoa(*addr),port));
close(res);
return -1;
}
#ifdef EISCONN
-
if (ret < 0 && errno == EISCONN) {
errno = 0;
ret = 0;
int *sockets;
BOOL good_connect;
- fd_set wr_fds;
+ fd_set r_fds, wr_fds;
struct timeval tv;
int maxfd;
timeout *= 1000; /* convert to microseconds */
- sockets = malloc(num_addrs * sizeof(*sockets));
+ sockets = SMB_MALLOC_ARRAY(int, num_addrs);
if (sockets == NULL)
return False;
for (i=0; i<num_addrs; i++) {
+ if (sockets[i] == -1)
+ continue;
+
if (connect(sockets[i], (struct sockaddr *)&(addrs[i]),
sizeof(*addrs)) == 0) {
/* Rather unlikely as we are non-blocking, but it
}
if (errno == EINPROGRESS || errno == EALREADY ||
- errno == EAGAIN) {
+#ifdef EISCONN
+ errno == EISCONN ||
+#endif
+ errno == EAGAIN || errno == EINTR) {
/* These are the error messages that something is
progressing. */
good_connect = True;
+ } else if (errno != 0) {
+ /* There was a direct error */
+ close(sockets[i]);
+ sockets[i] = -1;
}
}
maxfd = 0;
FD_ZERO(&wr_fds);
+ FD_ZERO(&r_fds);
for (i=0; i<num_addrs; i++) {
+ if (sockets[i] == -1)
+ continue;
FD_SET(sockets[i], &wr_fds);
+ FD_SET(sockets[i], &r_fds);
if (sockets[i]>maxfd)
maxfd = sockets[i];
}
tv.tv_sec = 0;
tv.tv_usec = connect_loop;
- res = sys_select(maxfd+1, NULL, &wr_fds, NULL, &tv);
+ res = sys_select_intr(maxfd+1, &r_fds, &wr_fds, NULL, &tv);
if (res < 0)
goto done;
for (i=0; i<num_addrs; i++) {
- int sockerr, sockerr_len;
-
- if (!FD_ISSET(sockets[i], &wr_fds))
+ if (sockets[i] == -1)
continue;
- sockerr_len = sizeof(sockerr);
+ /* Stevens, Network Programming says that if there's a
+ * successful connect, the socket is only writable. Upon an
+ * error, it's both readable and writable. */
- res = getsockopt(sockets[i], SOL_SOCKET, SO_ERROR, &sockerr,
- &sockerr_len);
-
- if (res < 0)
- goto done;
+ if (FD_ISSET(sockets[i], &r_fds) &&
+ FD_ISSET(sockets[i], &wr_fds)) {
+ /* readable and writable, so it's an error */
+ close(sockets[i]);
+ sockets[i] = -1;
+ continue;
+ }
- if (sockerr == 0) {
- /* Hey, we got a connection */
+ if (!FD_ISSET(sockets[i], &r_fds) &&
+ FD_ISSET(sockets[i], &wr_fds)) {
+ /* Only writable, so it's connected */
resulting_index = i;
goto done;
}
return res;
}
-
-/* the following 3 client_*() functions are nasty ways of allowing
- some generic functions to get info that really should be hidden in
- particular modules */
-static int client_fd = -1;
-
-void client_setfd(int fd)
-{
- client_fd = fd;
-}
-
-char *client_name(void)
-{
- return get_peer_name(client_fd,False);
-}
-
-char *client_addr(void)
-{
- return get_peer_addr(client_fd);
-}
-
-char *client_socket_addr(void)
-{
- return get_socket_addr(client_fd);
-}
-
-int client_socket_port(void)
-{
- return get_socket_port(client_fd);
-}
-
-struct in_addr *client_inaddr(struct sockaddr *sa)
-{
- struct sockaddr_in *sockin = (struct sockaddr_in *) (sa);
- socklen_t length = sizeof(*sa);
-
- if (getpeername(client_fd, sa, &length) < 0) {
- DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno) ));
- return NULL;
- }
-
- return &sockin->sin_addr;
-}
-
/*******************************************************************
Matchname - determine if host name matches IP address. Used to
confirm a hostname lookup to prevent spoof attacks.
{
struct hostent *hp;
int i;
-
+
if ((hp = sys_gethostbyname(remotehost)) == 0) {
- DEBUG(0,("sys_gethostbyname(%s): lookup failure.\n", remotehost));
+ DEBUG(0,("sys_gethostbyname(%s): lookup failure.\n",
+ remotehost));
return False;
- }
+ }
/*
* Make sure that gethostbyname() returns the "correct" host name.
* local DNS, we just have to trust it (all bets are off if the local
* DNS is perverted). We always check the address list, though.
*/
-
+
if (!strequal(remotehost, hp->h_name)
&& !strequal(remotehost, "localhost")) {
DEBUG(0,("host name/name mismatch: %s != %s\n",
remotehost, hp->h_name));
return False;
}
-
+
/* Look up the host address in the address list we just got. */
for (i = 0; hp->h_addr_list[i]; i++) {
- if (memcmp(hp->h_addr_list[i], (char *) & addr, sizeof(addr)) == 0)
+ if (memcmp(hp->h_addr_list[i], (char *)&addr,sizeof(addr)) == 0)
return True;
}
-
+
/*
* The host name does not map to the original host address. Perhaps
* someone has compromised a name server. More likely someone botched
* it, but that could be dangerous, too.
*/
-
+
DEBUG(0,("host name/address mismatch: %s != %s\n",
inet_ntoa(addr), hp->h_name));
return False;
if (!lp_hostname_lookups() && (force_lookup == False)) {
return get_peer_addr(fd);
}
-
+
p = get_peer_addr(fd);
/* it might be the same as the last one - save some DNS work */
- if (strcmp(p, addr_buf) == 0)
+ if (strcmp(p, addr_buf) == 0)
return name_buf;
pstrcpy(name_buf,"UNKNOWN");
- if (fd == -1)
+ if (fd == -1)
return name_buf;
fstrcpy(addr_buf, p);
addr = *interpret_addr2(p);
-
+
/* Look up the remote host name. */
- if ((hp = gethostbyaddr((char *)&addr.s_addr, sizeof(addr.s_addr), AF_INET)) == 0) {
+ if ((hp = gethostbyaddr((char *)&addr.s_addr,
+ sizeof(addr.s_addr), AF_INET)) == 0) {
DEBUG(1,("Gethostbyaddr failed for %s\n",p));
pstrcpy(name_buf, p);
} else {
}
}
- /* can't pass the same source and dest strings in when you
- use --enable-developer or the clobber_region() call will
+ /* can't pass the same source and dest strings in when you
+ use --enable-developer or the clobber_region() call will
get you */
-
+
pstrcpy( tmp_name, name_buf );
alpha_strcpy(name_buf, tmp_name, "_-.", sizeof(name_buf));
if (strstr(name_buf,"..")) {
if (fd == -1) {
return addr_buf;
}
-
+
if (getpeername(fd, &sa, &length) < 0) {
- DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno) ));
+ DEBUG(0,("getpeername failed. Error was %s\n",
+ strerror(errno) ));
return addr_buf;
}
-
+
fstrcpy(addr_buf,(char *)inet_ntoa(sockin->sin_addr));
-
+
return addr_buf;
}
int sock;
mode_t old_umask;
pstring path;
-
+
old_umask = umask(0);
-
+
/* Create the socket directory or reuse the existing one */
-
+
if (lstat(socket_dir, &st) == -1) {
if (errno == ENOENT) {
/* Create directory */
if (mkdir(socket_dir, dir_perms) == -1) {
DEBUG(0, ("error creating socket directory "
- "%s: %s\n", socket_dir,
+ "%s: %s\n", socket_dir,
strerror(errno)));
goto out_umask;
}
socket_dir));
goto out_umask;
}
- if ((st.st_uid != sec_initial_uid()) ||
+ if ((st.st_uid != sec_initial_uid()) ||
((st.st_mode & 0777) != dir_perms)) {
DEBUG(0, ("invalid permissions on socket directory "
"%s\n", socket_dir));
goto out_umask;
}
}
-
+
/* Create the socket file */
-
+
sock = socket(AF_UNIX, SOCK_STREAM, 0);
-
+
if (sock == -1) {
perror("socket");
goto out_umask;
}
-
+
pstr_sprintf(path, "%s/%s", socket_dir, socket_name);
-
+
unlink(path);
memset(&sunaddr, 0, sizeof(sunaddr));
sunaddr.sun_family = AF_UNIX;
safe_strcpy(sunaddr.sun_path, path, sizeof(sunaddr.sun_path)-1);
-
+
if (bind(sock, (struct sockaddr *)&sunaddr, sizeof(sunaddr)) == -1) {
DEBUG(0, ("bind failed on pipe socket %s: %s\n", path,
strerror(errno)));
goto out_close;
}
-
+
if (listen(sock, 5) == -1) {
DEBUG(0, ("listen failed on pipe socket %s: %s\n", path,
strerror(errno)));
goto out_close;
}
-
+
umask(old_umask);
return sock;
git.samba.org / samba.git / blobdiff