#include "includes.h"
#ifdef WITH_SSL
#include <openssl/ssl.h>
#undef Realloc
extern SSL *ssl;
extern int sslFd;
#endif
struct in_addr lastip;
int lastport=0;
int smb_read_error = 0;
BOOL is_a_socket(int fd)
{
int v,l;
l = sizeof(int);
return(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&v, &l) == 0);
}
enum SOCK_OPT_TYPES {OPT_BOOL,OPT_INT,OPT_ON};
typedef struct smb_socket_option
{
char *name;
int level;
int option;
int value;
int opttype;
} smb_socket_option;
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},
#ifdef TCP_NODELAY
{"TCP_NODELAY", IPPROTO_TCP, TCP_NODELAY, 0, OPT_BOOL},
#endif
#ifdef IPTOS_LOWDELAY
{"IPTOS_LOWDELAY", IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY, OPT_ON},
#endif
#ifdef IPTOS_THROUGHPUT
{"IPTOS_THROUGHPUT", IPPROTO_IP, IP_TOS, IPTOS_THROUGHPUT, OPT_ON},
#endif
#ifdef SO_REUSEPORT
{"SO_REUSEPORT", SOL_SOCKET, SO_REUSEPORT, 0, OPT_BOOL},
#endif
#ifdef SO_SNDBUF
{"SO_SNDBUF", SOL_SOCKET, SO_SNDBUF, 0, OPT_INT},
#endif
#ifdef SO_RCVBUF
{"SO_RCVBUF", SOL_SOCKET, SO_RCVBUF, 0, OPT_INT},
#endif
#ifdef SO_SNDLOWAT
{"SO_SNDLOWAT", SOL_SOCKET, SO_SNDLOWAT, 0, OPT_INT},
#endif
#ifdef SO_RCVLOWAT
{"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
#endif
#ifdef SO_SNDTIMEO
{"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
#endif
#ifdef SO_RCVTIMEO
{"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
#endif
{NULL,0,0,0,0}};
static void print_socket_options(int s)
{
int value, vlen = 4;
smb_socket_option *p = &socket_options[0];
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));
}
}
}
void set_socket_options(int fd, char *options)
{
fstring tok;
while (next_token(&options,tok," \t,", sizeof(tok))) {
int ret=0,i;
int value = 1;
char *p;
BOOL got_value = False;
if ((p = strchr(tok,'='))) {
*p = 0;
value = atoi(p+1);
got_value = True;
}
for (i=0;socket_options[i].name;i++)
if (strequal(socket_options[i].name,tok))
break;
if (!socket_options[i].name) {
DEBUG(0,("Unknown socket option %s\n",tok));
continue;
}
switch (socket_options[i].opttype) {
case OPT_BOOL:
case OPT_INT:
ret = setsockopt(fd,socket_options[i].level,
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));
{
int on = socket_options[i].value;
ret = setsockopt(fd,socket_options[i].level,
socket_options[i].option,(char *)&on,sizeof(int));
}
break;
}
if (ret != 0)
DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok, strerror(errno) ));
}
print_socket_options(fd);
}
ssize_t read_udp_socket(int fd,char *buf,size_t len)
{
ssize_t ret;
struct sockaddr_in sock;
socklen_t socklen = sizeof(sock);
memset((char *)&sock,'\0',socklen);
memset((char *)&lastip,'\0',sizeof(lastip));
ret = (ssize_t)recvfrom(fd,buf,len,0,(struct sockaddr *)&sock,&socklen);
if (ret <= 0) {
DEBUG(2,("read socket failed. ERRNO=%s\n",strerror(errno)));
return(0);
}
lastip = sock.sin_addr;
lastport = ntohs(sock.sin_port);
DEBUG(10,("read_udp_socket: lastip %s lastport %d read: %d\n",
inet_ntoa(lastip), lastport, ret));
return(ret);
}
static 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;
if (maxcnt <= 0)
return(0);
smb_read_error = 0;
if (time_out <= 0) {
if (mincnt == 0) mincnt = maxcnt;
while (nread < mincnt) {
#ifdef WITH_SSL
if(fd == sslFd){
readret = SSL_read(ssl, buf + nread, maxcnt - nread);
}else{
readret = read(fd, buf + nread, maxcnt - nread);
}
#else
readret = read(fd, buf + nread, maxcnt - nread);
#endif
if (readret == 0) {
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) ));
smb_read_error = READ_ERROR;
return -1;
}
nread += readret;
}
return((ssize_t)nread);
}
timeout.tv_sec = (time_t)(time_out / 1000);
timeout.tv_usec = (long)(1000 * (time_out % 1000));
for (nread=0; nread < mincnt; ) {
FD_ZERO(&fds);
FD_SET(fd,&fds);
selrtn = sys_select_intr(fd+1,&fds,NULL,NULL,&timeout);
if(selrtn == -1) {
DEBUG(0,("read_socket_with_timeout: timeout read. select error = %s.\n", strerror(errno) ));
smb_read_error = READ_ERROR;
return -1;
}
if (selrtn == 0) {
DEBUG(10,("read_socket_with_timeout: timeout read. select timed out.\n"));
smb_read_error = READ_TIMEOUT;
return -1;
}
#ifdef WITH_SSL
if(fd == sslFd){
readret = SSL_read(ssl, buf + nread, maxcnt - nread);
}else{
readret = read(fd, buf + nread, maxcnt - nread);
}
#else
readret = read(fd, buf+nread, maxcnt-nread);
#endif
if (readret == 0) {
DEBUG(5,("read_socket_with_timeout: timeout read. EOF from client.\n"));
smb_read_error = READ_EOF;
return -1;
}
if (readret == -1) {
DEBUG(0,("read_socket_with_timeout: timeout read. read error = %s.\n", strerror(errno) ));
smb_read_error = READ_ERROR;
return -1;
}
nread += readret;
}
return((ssize_t)nread);
}
ssize_t read_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;
if (maxcnt <= 0)
return(0);
if (time_out <= 0) {
if (mincnt == 0) mincnt = maxcnt;
while (nread < mincnt) {
#ifdef WITH_SSL
if(fd == sslFd){
readret = SSL_read(ssl, buf + nread, maxcnt - nread);
}else{
readret = read(fd, buf + nread, maxcnt - nread);
}
#else
readret = read(fd, buf + nread, maxcnt - nread);
#endif
if (readret <= 0)
return readret;
nread += readret;
}
return((ssize_t)nread);
}
timeout.tv_sec = (time_t)(time_out / 1000);
timeout.tv_usec = (long)(1000 * (time_out % 1000));
for (nread=0; nread < mincnt; ) {
FD_ZERO(&fds);
FD_SET(fd,&fds);
selrtn = sys_select_intr(fd+1,&fds,NULL,NULL,&timeout);
if(selrtn <= 0)
return selrtn;
#ifdef WITH_SSL
if(fd == sslFd){
readret = SSL_read(ssl, buf + nread, maxcnt - nread);
}else{
readret = read(fd, buf + nread, maxcnt - nread);
}
#else
readret = read(fd, buf+nread, maxcnt-nread);
#endif
if (readret <= 0)
return readret;
nread += readret;
}
return((ssize_t)nread);
}
BOOL send_keepalive(int client)
{
unsigned char buf[4];
buf[0] = 0x85;
buf[1] = buf[2] = buf[3] = 0;
return(write_socket_data(client,(char *)buf,4) == 4);
}
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)
{
#ifdef WITH_SSL
if(fd == sslFd){
ret = SSL_read(ssl, buffer + total, N - total);
}else{
ret = read(fd,buffer + total,N - total);
}
#else
ret = read(fd,buffer + total,N - total);
#endif
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;
}
ssize_t write_data(int fd,char *buffer,size_t N)
{
size_t total=0;
ssize_t ret;
while (total < N) {
#ifdef WITH_SSL
if(fd == sslFd){
ret = SSL_write(ssl,buffer + total,N - total);
} else {
ret = write(fd,buffer + total,N - total);
}
#else
ret = write(fd,buffer + total,N - total);
#endif
if (ret == -1) {
DEBUG(0,("write_data: write failure. Error = %s\n", strerror(errno) ));
return -1;
}
if (ret == 0)
return (ssize_t)total;
total += (size_t)ret;
}
return (ssize_t)total;
}
ssize_t write_socket_data(int fd,char *buffer,size_t N)
{
size_t total=0;
ssize_t ret;
while (total < N)
{
#ifdef WITH_SSL
if(fd == sslFd){
ret = SSL_write(ssl,buffer + total,N - total);
}else{
ret = send(fd,buffer + total,N - total, 0);
}
#else
ret = send(fd,buffer + total,N - total,0);
#endif
if (ret == -1) {
DEBUG(0,("write_socket_data: write failure. Error = %s\n", strerror(errno) ));
return -1;
}
if (ret == 0) return total;
total += ret;
}
return (ssize_t)total;
}
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);
}
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_data(fd,inbuf,4) == 4);
if (!ok)
return(-1);
len = smb_len(inbuf);
msg_type = CVAL(inbuf,0);
if (msg_type == 0x85)
DEBUG(5,("Got keepalive packet\n"));
}
DEBUG(10,("got smb length of %d\n",len));
return(len);
}
ssize_t read_smb_length(int fd,char *inbuf,unsigned int timeout)
{
ssize_t len;
for(;;)
{
len = read_smb_length_return_keepalive(fd, inbuf, timeout);
if(len < 0)
return len;
if(CVAL(inbuf,0) != 0x85)
break;
}
DEBUG(10,("read_smb_length: got smb length of %d\n",len));
return len;
}
BOOL receive_smb(int fd,char *buffer, unsigned int timeout)
{
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: length < 0!\n"));
smb_read_error = READ_ERROR;
return(False);
}
if (len > (BUFFER_SIZE + LARGE_WRITEX_HDR_SIZE)) {
DEBUG(0,("Invalid packet length! (%d bytes).\n",len));
if (len > BUFFER_SIZE + (SAFETY_MARGIN/2)) {
smb_read_error = READ_ERROR;
return False;
}
}
if(len > 0) {
ret = read_data(fd,buffer+4,len);
if (ret != len) {
smb_read_error = READ_ERROR;
return False;
}
}
return(True);
}
BOOL client_receive_smb(int fd,char *buffer, unsigned int timeout)
{
BOOL ret;
for(;;)
{
ret = receive_smb(fd, buffer, timeout);
if (!ret)
{
DEBUG(10,("client_receive_smb failed\n"));
show_msg(buffer);
return ret;
}
if(CVAL(buffer,0) != 0x85)
break;
}
show_msg(buffer);
return ret;
}
BOOL send_smb(int fd,char *buffer)
{
size_t len;
size_t nwritten=0;
ssize_t ret;
len = smb_len(buffer) + 4;
while (nwritten < len) {
ret = write_socket(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) ));
return False;
}
nwritten += ret;
}
return True;
}
BOOL send_one_packet(char *buf,int len,struct in_addr ip,int port,int type)
{
BOOL ret;
int out_fd;
struct sockaddr_in sock_out;
out_fd = socket(AF_INET, type, 0);
if (out_fd == -1)
{
DEBUG(0,("socket failed"));
return False;
}
memset((char *)&sock_out,'\0',sizeof(sock_out));
putip((char *)&sock_out.sin_addr,(char *)&ip);
sock_out.sin_port = htons( port );
sock_out.sin_family = AF_INET;
if (DEBUGLEVEL > 0)
DEBUG(3,("sending a packet of len %d to (%s) on port %d of type %s\n",
len,inet_ntoa(ip),port,type==SOCK_DGRAM?"DGRAM":"STREAM"));
ret = (sendto(out_fd,buf,len,0,(struct sockaddr *)&sock_out,sizeof(sock_out)) >= 0);
if (!ret)
DEBUG(0,("Packet send to %s(%d) failed ERRNO=%s\n",
inet_ntoa(ip),port,strerror(errno)));
close(out_fd);
return(ret);
}
int open_socket_in( int type, int port, int dlevel, uint32 socket_addr, BOOL rebind )
{
struct sockaddr_in sock;
int res;
memset( (char *)&sock, '\0', sizeof(sock) );
#ifdef HAVE_SOCK_SIN_LEN
sock.sin_len = sizeof(sock);
#endif
sock.sin_port = htons( port );
sock.sin_family = AF_INET;
sock.sin_addr.s_addr = socket_addr;
res = socket( AF_INET, type, 0 );
if( res == -1 ) {
if( DEBUGLVL(0) ) {
dbgtext( "open_socket_in(): socket() call failed: " );
dbgtext( "%s\n", strerror( errno ) );
}
return -1;
}
{
int val = rebind ? 1 : 0;
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( "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( DEBUGLVL( dlevel ) ) {
dbgtext( "open_socket_in(): setsockopt: ");
dbgtext( "SO_REUSEPORT = %s ", val?"True":"False" );
dbgtext( "on port %d failed ", port );
dbgtext( "with error = %s\n", strerror(errno) );
}
}
#endif
}
if( bind( res, (struct sockaddr *)&sock, sizeof(sock) ) == -1 ) {
if( DEBUGLVL(dlevel) && (port == SMB_PORT || port == NMB_PORT) ) {
dbgtext( "bind failed on port %d ", port );
dbgtext( "socket_addr = %s.\n", inet_ntoa( sock.sin_addr ) );
dbgtext( "Error = %s\n", strerror(errno) );
}
close( res );
return( -1 );
}
DEBUG( 3, ( "bind succeeded on port %d\n", port ) );
return( res );
}
int open_socket_out(int type, struct in_addr *addr, int port ,int timeout)
{
struct sockaddr_in sock_out;
int res,ret;
int connect_loop = 250;
int loops = (timeout) / connect_loop;
res = socket(PF_INET, type, 0);
if (res == -1)
{ DEBUG(0,("socket error\n")); return -1; }
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));
connect_again:
ret = connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out));
if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
errno == EAGAIN) && loops--) {
msleep(connect_loop);
goto connect_again;
}
if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
errno == EAGAIN)) {
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;
}
#endif
if (ret < 0) {
DEBUG(2,("error connecting to %s:%d (%s)\n",
inet_ntoa(*addr),port,strerror(errno)));
close(res);
return -1;
}
set_blocking(res,True);
return res;
}
static int client_fd = -1;
void client_setfd(int fd)
{
client_fd = fd;
}
char *client_name(void)
{
return get_socket_name(client_fd);
}
char *client_addr(void)
{
return get_socket_addr(client_fd);
}
static BOOL matchname(char *remotehost,struct in_addr addr)
{
struct hostent *hp;
int i;
if ((hp = sys_gethostbyname(remotehost)) == 0) {
DEBUG(0,("sys_gethostbyname(%s): lookup failure.\n", remotehost));
return False;
}
if (strcasecmp(remotehost, hp->h_name)
&& strcasecmp(remotehost, "localhost")) {
DEBUG(0,("host name/name mismatch: %s != %s\n",
remotehost, hp->h_name));
return False;
}
for (i = 0; hp->h_addr_list[i]; i++) {
if (memcmp(hp->h_addr_list[i], (caddr_t) & addr, sizeof(addr)) == 0)
return True;
}
DEBUG(0,("host name/address mismatch: %s != %s\n",
inet_ntoa(addr), hp->h_name));
return False;
}
char *get_socket_name(int fd)
{
static pstring name_buf;
static fstring addr_buf;
struct hostent *hp;
struct in_addr addr;
char *p;
p = get_socket_addr(fd);
if (strcmp(p, addr_buf) == 0) return name_buf;
pstrcpy(name_buf,"UNKNOWN");
if (fd == -1) return name_buf;
fstrcpy(addr_buf, p);
addr = *interpret_addr2(p);
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 {
pstrcpy(name_buf,(char *)hp->h_name);
if (!matchname(name_buf, addr)) {
DEBUG(0,("Matchname failed on %s %s\n",name_buf,p));
pstrcpy(name_buf,"UNKNOWN");
}
}
alpha_strcpy(name_buf, name_buf, "_-.", sizeof(name_buf));
if (strstr(name_buf,"..")) {
pstrcpy(name_buf, "UNKNOWN");
}
return name_buf;
}
char *get_socket_addr(int fd)
{
struct sockaddr sa;
struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
int length = sizeof(sa);
static fstring addr_buf;
fstrcpy(addr_buf,"0.0.0.0");
if (fd == -1) {
return addr_buf;
}
if (getpeername(fd, &sa, &length) < 0) {
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 open_pipe_sock(char *path)
{
int sock;
struct sockaddr_un sa;
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock < 0)
{
DEBUG(0, ("unix socket open failed\n"));
return sock;
}
ZERO_STRUCT(sa);
sa.sun_family = AF_UNIX;
safe_strcpy(sa.sun_path, path, sizeof(sa.sun_path)-1);
DEBUG(10, ("socket open succeeded. file name: %s\n", sa.sun_path));
if (connect(sock, (struct sockaddr*) &sa, sizeof(sa)) < 0)
{
DEBUG(0,("socket connect to %s failed\n", sa.sun_path));
close(sock);
return -1;
}
return sock;
}
static int socketpair_tcp(int fd[2])
{
int listener;
struct sockaddr_in sock;
struct sockaddr_in sock2;
socklen_t socklen = sizeof(sock);
int connect_done = 0;
fd[0] = fd[1] = listener = -1;
memset(&sock, 0, sizeof(sock));
if ((listener = socket(PF_INET, SOCK_STREAM, 0)) == -1) goto failed;
memset(&sock2, 0, sizeof(sock2));
#ifdef HAVE_SOCK_SIN_LEN
sock2.sin_len = sizeof(sock2);
#endif
sock2.sin_family = PF_INET;
bind(listener, (struct sockaddr *)&sock2, sizeof(sock2));
if (listen(listener, 1) != 0) goto failed;
if (getsockname(listener, (struct sockaddr *)&sock, &socklen) != 0) goto failed;
if ((fd[1] = socket(PF_INET, SOCK_STREAM, 0)) == -1) goto failed;
set_blocking(fd[1], 0);
sock.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
if (connect(fd[1],(struct sockaddr *)&sock,sizeof(sock)) == -1) {
if (errno != EINPROGRESS) goto failed;
} else {
connect_done = 1;
}
if ((fd[0] = accept(listener, (struct sockaddr *)&sock, &socklen)) == -1) goto failed;
close(listener);
if (connect_done == 0) {
if (connect(fd[1],(struct sockaddr *)&sock,sizeof(sock)) != 0
&& errno != EISCONN) goto failed;
}
set_blocking(fd[1], 1);
return 0;
failed:
if (fd[0] != -1) close(fd[0]);
if (fd[1] != -1) close(fd[1]);
if (listener != -1) close(listener);
return -1;
}
int sock_exec(const char *prog)
{
int fd[2];
if (socketpair_tcp(fd) != 0) {
DEBUG(0,("socketpair_tcp failed (%s)\n", strerror(errno)));
return -1;
}
if (fork() == 0) {
close(fd[0]);
close(0);
close(1);
dup(fd[1]);
dup(fd[1]);
exit(system(prog));
}
close(fd[1]);
return fd[0];
}