/*
* Derived from the rcmd() libc call, with modified interface.
* Is MT-safe if gethostbyname_r is defined.
* Connection can time out.
*
* ahost (IN) target hostname
* port (IN) port to connect to
* remuser (IN) remote username
* cmd (IN) remote command to execute under shell
* fd2p (IN) if non NULL, return stderr file descriptor here
* int (RETURN) socket for I/O on success
*/
int
mcmd(char **ahost, int port, char *remuser, char *cmd, int *fd2p, char *munge_socket)
{
struct sockaddr m_socket;
struct sockaddr_in *getp;
struct sockaddr_in sin, from;
struct sockaddr_storage ss;
struct hostent *h_ent = NULL;
struct in_addr m_in;
unsigned int rand, randl;
unsigned int randy = 0;
int s, s2, rv, mcount, lport;
char c;
char num[6] = {0};
char *mptr;
char *mbuf;
char *tmbuf;
char *m;
char *mpvers;
char num_seq[12] = {0};
socklen_t len;
sigset_t blockme;
sigset_t oldset;
#ifdef HAVE_GETHOSTBYNAME_R_6
struct hostent h_entry;
int h_ent_bsize = HBUF_LEN;
char h_ent_buf[HBUF_LEN] = {0};
#endif
int h_ent_err = 0;
unsigned char *hptr;
char haddrdot[MAXHOSTNAMELEN + MRSH_LOCALHOST_KEYLEN + 1] = {0};
munge_ctx_t ctx;
sigemptyset(&blockme);
sigaddset(&blockme, SIGURG);
sigaddset(&blockme, SIGPIPE);
SET_PTHREAD();
if (fd2p != NULL) {
/*
* Generate a random number to send in our package to the
* server. We will see it again and compare it when the
* server sets up the stderr socket and sends it to us.
* We need to loop for the tiny possibility we read 0 :P
*/
int rand_fd;
if ((rand_fd = open ("/dev/urandom", O_RDONLY | O_NONBLOCK)) < 0) {
perror("mcmd: Open of /dev/urandom failed");
exit(1);
}
do {
if ((rv = read (rand_fd, &randy, sizeof(uint32_t))) < 0) {
perror("mcmd: Read of /dev/urandom failed");
close(rand_fd);
exit(1);
}
if (rv < (int) (sizeof(uint32_t))) {
perror("mcmd: Read returned too few bytes");
close(rand_fd);
exit(1);
}
} while (randy == 0);
close(rand_fd);
}
/* Convert to decimal string, is 0 if we don't want stderr. */
snprintf(num_seq, sizeof(num_seq),"%d",randy);
/*
* Start setup of the stdin/stdout socket...
*/
lport = 0;
len = sizeof(struct sockaddr_in);
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("mcmd: socket call stdout failed");
exit(1);
}
memset (&ss, '\0', sizeof(ss));
ss.ss_family = AF_INET;
if (bind(s, (struct sockaddr *)&ss, len) < 0) {
perror("mcmd: bind failed");
goto bad;
}
sin.sin_family = AF_INET;
#ifdef HAVE_GETHOSTBYNAME_R_6
(void) gethostbyname_r(*ahost, &h_entry, &h_ent_buf[0],
h_ent_bsize, &h_ent, &h_ent_err);
#else
h_ent = gethostbyname(*ahost);
h_ent_err = h_errno;
#endif
if (h_ent == NULL) {
switch (h_ent_err) {
case HOST_NOT_FOUND:
fprintf(stderr,"mcmd: Hostname not found.\n");
goto bad;
case NO_ADDRESS:
fprintf(stderr,"mcmd: Can't find IP address.\n");
goto bad;
case NO_RECOVERY:
fprintf(stderr,"mcmd: A non-recoverable error.\n");
goto bad;
case TRY_AGAIN:
fprintf(stderr,"mcmd: Error on name server.\n");
goto bad;
default:
fprintf(stderr,"mcmd: Unknown error.\n");
goto bad;
}
}
memcpy(&sin.sin_addr.s_addr, *h_ent->h_addr_list, h_ent->h_length);
sin.sin_port = port;
if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
perror("mcmd: connect failed");
goto bad;
}
/* save address in buffer */
if ((strcmp(*ahost, "localhost") == 0)
|| (strcmp(*ahost, "127.0.0.1") == 0)) {
/* Special case for localhost */
char hostname[MAXHOSTNAMELEN+1];
memset(hostname, '\0', MAXHOSTNAMELEN+1);
if (gethostname(hostname, MAXHOSTNAMELEN) < 0) {
perror("mcmd: gethostname call failed");
exit(1);
}
strncpy(haddrdot, MRSH_LOCALHOST_KEY, MRSH_LOCALHOST_KEYLEN);
strncat(haddrdot, hostname, MAXHOSTNAMELEN);
}
else {
memcpy(&m_in.s_addr, *h_ent->h_addr_list, h_ent->h_length);
hptr = (unsigned char *) &m_in;
sprintf(haddrdot, "%u.%u.%u.%u", hptr[0], hptr[1], hptr[2], hptr[3]);
}
lport = 0;
s2 = -1;
if (fd2p != NULL) {
/*
* Start the socket setup for the stderr.
*/
struct sockaddr_in sin2;
if ((s2 = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
perror("mcmd: socket call for stderr failed");
goto bad;
}
memset (&sin2, 0, sizeof(sin2));
sin2.sin_family = AF_INET;
sin2.sin_addr.s_addr = htonl(INADDR_ANY);
sin2.sin_port = 0;
if (bind(s2, (struct sockaddr *)&sin2, sizeof(sin2)) < 0) {
perror("mcmd: bind failed");
close(s2);
goto bad;
}
len = sizeof(struct sockaddr);
/*
* Retrieve our port number so we can hand it to the server
* for the return (stderr) connection...
*/
if (getsockname(s2,&m_socket,&len) < 0) {
perror("mcmd: getsockname failed");
close(s2);
goto bad;
}
getp = (struct sockaddr_in *)&m_socket;
lport = ntohs(getp->sin_port);
if (listen(s2, 5) < 0) {
perror("mcmd: listen() failed");
close(s2);
goto bad;
}
}
/* put port in buffer. will be 0 if user didn't want stderr */
snprintf(num,sizeof(num),"%d",lport);
/*
* We call munge_encode which will take what we write in and
* return a pointer to an munged buffer. What we get back is
* a null terminated string of encrypted characters.
*
* The format of the unmunged buffer is as follows (each a
* string terminated with a '\0' (null):
*
* stderr_port_number & random_number are 0 if user did not
* request stderr socket
*
* SIZE EXAMPLE
* ========== =============
* remote_user_name variable "mhaskell"
* '\0'
* protocol version < 12 bytes "1.2"
* '\0'
* IP address of requestor [1] 7-15 bytes "134.9.11.155"
* '\0'
* stderr_port_number 4-8 bytes "50111"
* '\0'
* random_number 1-8 bytes "1f79ca0e"
* '\0'
* users_command variable "ls -al"
* '\0' '\0'
*
* (The last extra null is accounted for in the following
* line's last strlen() call.)
*
* [1] - With the exception when 127.0.0.1 or "localhost" are
* input by the user. In that situation, the MRSH_LOCALHOST_KEY
* and hostname are concatenated and the size may be much larger
* than 7-15 bytes.
*/
mpvers = MRSH_PROTOCOL_VERSION;
mcount = ((strlen(remuser)+1) + (strlen(mpvers)+1) +
(strlen(haddrdot)+1) + (strlen(num)+1) +
(strlen(num_seq)+1) + strlen(cmd)+2);
tmbuf = mbuf = malloc(mcount);
if (tmbuf == NULL) {
perror("mcmd: Error from malloc");
close(s2);
goto bad;
}
/*
* The following memset() call takes the extra trailing null
* as part of its count as well.
*/
memset(mbuf,0,mcount);
mptr = strcpy(mbuf, remuser);
mptr += strlen(remuser)+1;
mptr = strcpy(mptr, mpvers);
mptr += strlen(mpvers)+1;
mptr = strcpy(mptr, haddrdot);
mptr += strlen(haddrdot)+1;
mptr = strcpy(mptr, num);
mptr += strlen(num)+1;
mptr = strcpy(mptr, num_seq);
mptr += strlen(num_seq)+1;
mptr = strcpy(mptr, cmd);
if ((ctx = munge_ctx_create()) == NULL) {
fprintf(stderr, "munge_ctx_create: %s\n", strerror(errno));
close(s2);
free(tmbuf);
goto bad;
}
if (munge_socket) {
if ((rv = munge_ctx_set (ctx,
MUNGE_OPT_SOCKET,
munge_socket)) != EMUNGE_SUCCESS) {
fprintf(stderr,"munge_ctx_set: %s\n", munge_ctx_strerror(ctx));
munge_ctx_destroy(ctx);
close(s2);
free(tmbuf);
goto bad;
}
}
if ((rv = munge_encode(&m,ctx,mbuf,mcount)) != EMUNGE_SUCCESS) {
fprintf(stderr,"munge_encode: %s\n", munge_ctx_strerror(ctx));
munge_ctx_destroy(ctx);
close(s2);
free(tmbuf);
goto bad;
}
munge_ctx_destroy(ctx);
mcount = (strlen(m)+1);
/*
* Write stderr port in the clear in case we can't decode for
* some reason (i.e. bad credentials). May be 0 if user
* doesn't want stderr.
*/
if (fd2p != NULL) {
rv = fd_write_n(s, num, strlen(num)+1);
if (rv != (ssize_t)(strlen(num)+1)) {
free(m);
free(tmbuf);
if (rv == -1) {
if (errno == EPIPE)
perror("mcmd: Lost connection (EPIPE)");
else
perror("mcmd: Write of stderr port");
}
else
fprintf(stderr, "mcmd: write incorrect number of bytes.\n");
close(s2);
goto bad;
}
}
else {
write(s, "", 1);
lport = 0;
}
/*
* Write the munge_encoded blob to the socket.
*/
if ((rv = fd_write_n(s, m, mcount)) != mcount) {
free(m);
free(tmbuf);
if (rv == -1) {
if (errno == EPIPE)
perror("mcmd: Lost connection (EPIPE)");
else
perror("mcmd: Write of munge data");
}
else
fprintf(stderr, "mcmd: write incorrect number of bytes.\n");
close(s2);
goto bad;
}
free(m);
free(tmbuf);
if (fd2p != NULL) {
/*
* Wait for stderr connection from daemon.
*/
int maxfd, s3;
fd_set reads;
errno = 0;
FD_ZERO(&reads);
FD_SET(s, &reads);
FD_SET(s2, &reads);
maxfd = (s > s2) ? s : s2;
if (select(maxfd + 1, &reads, 0, 0, 0) < 1 || !FD_ISSET(s2, &reads)) {
if (errno != 0)
perror("mcmd: Select failed (setting up stderr)");
else {
char buf[100];
int rv = read(s, buf, 100);
if (rv == 0)
fprintf(stderr, "mcmd: Connection closed by remote host.\n");
else if (rv > 0)
fprintf(stderr, "mcmd: Protocol failure in circuit setup.\n");
else /* rv < 0 */
fprintf(stderr, "mcmd: %s\n", strerror(errno));
}
close(s2);
goto bad;
}
errno = 0;
len = sizeof(from); /* arg to accept */
if ((s3 = accept(s2, (struct sockaddr *)&from, &len)) < 0) {
perror("mcmd: accept (stderr) failed");
close(s2);
goto bad;
}
if (from.sin_family != AF_INET) {
fprintf(stderr, "mcmd: bad family type: %d\n", from.sin_family);
goto bad2;
}
close(s2);
/*
* The following fixes a race condition between the daemon
* and the client. The daemon is waiting for a null to
* proceed. We do this to make sure that we have our
* socket is up prior to the daemon running the command.
*/
if (write(s,"",1) != 1) {
perror("mcmd: Could not communicate to daemon to proceed");
close(s3);
goto bad;
}
/*
* Read from our stderr. The server should have placed
* our random number we generated onto this socket.
*/
rv = fd_read_n(s3, &rand, sizeof(rand));
if (rv <= 0) {
if (rv == 0)
perror("mcmd: Connection closed by remote host");
else
perror("mcmd: Bad read of verification number");
close(s3);
goto bad;
}
randl = ntohl(rand);
if (randl != randy) {
char tmpbuf[LINEBUFSIZE] = {0};
char *tptr = &tmpbuf[0];
memcpy(tptr,(char *) &rand,sizeof(rand));
tptr += sizeof(rand);
if ((fd_read_line (s3, tptr, LINEBUFSIZE - sizeof(rand))) < 0) {
perror("mcmd: Read error from remote host");
close(s3);
goto bad;
}
/* Legacy rsh may consider the first byte an error code,
* so don't output this byte.
*/
if (tmpbuf[0] == '\01')
tptr = &tmpbuf[1];
else
tptr = &tmpbuf[0];
fprintf(stderr,"mcmd error returned: %s\n", tptr);
close(s3);
goto bad;
}
/*
* Set the stderr file descriptor for the user...
*/
*fd2p = s3;
}
if ((rv = read(s, &c, 1)) < 0) {
perror("mcmd: read: protocol failure");
goto bad2;
}
if (rv != 1) {
fprintf(stderr, "mcmd: read: protocol failure: invalid response.\n");
goto bad2;
}
if (c != '\0') {
/* retrieve error string from remote server */
char tmpbuf[LINEBUFSIZE];
if (fd_read_line (s, &tmpbuf[0], LINEBUFSIZE ) < 0) {
perror("mcmd: Error from remote host");
goto bad2;
}
fprintf(stderr,"mcmd error returned: %s\n",&tmpbuf[0]);
goto bad2;
}
RESTORE_PTHREAD();
return (s);
bad2:
if (lport)
close(*fd2p);
bad:
close(s);
RESTORE_PTHREAD();
exit(1);
}
/*
* Derived from the mcmd() libc call, with modified interface.
* This version is MT-safe. Errors are displayed in pdsh-compat format.
* Connection can time out.
* ahost (IN) target hostname
* addr (IN) 4 byte internet address
* locuser (IN) local username
* remuser (IN) remote username
* cmd (IN) remote command to execute under shell
* rank (IN) not used
* fd2p (IN) if non NULL, return stderr file descriptor here
* int (RETURN) -1 on error, socket for I/O on success
*
* Originally by Mike Haskell for mrsh, modified slightly to work with pdsh by:
* - making mcmd always thread safe
* - using "err" function output errors.
* - passing in address as addr intead of calling gethostbyname
* - using default mshell port instead of calling getservbyname
*
*/
static int
mcmd(char *ahost, char *addr, char *locuser, char *remuser, char *cmd,
int rank, int *fd2p, void **argp)
{
struct sockaddr m_socket;
struct sockaddr_in *getp;
struct sockaddr_in sin, from;
struct sockaddr_storage ss;
struct in_addr m_in;
unsigned int rand, randl;
unsigned char *hptr;
int s, s2, rv, mcount, lport;
char c;
char num[6] = {0};
char *mptr;
char *mbuf;
char *tmbuf;
char *m;
char *mpvers;
char num_seq[12] = {0};
socklen_t len;
sigset_t blockme;
sigset_t oldset;
char haddrdot[MAXHOSTNAMELEN + MRSH_LOCALHOST_KEYLEN + 1] = {0};
munge_ctx_t ctx;
struct xpollfd xpfds[2];
memset (xpfds, 0, sizeof (xpfds));
memset (&sin, 0, sizeof (sin));
sigemptyset(&blockme);
sigaddset(&blockme, SIGURG);
sigaddset(&blockme, SIGPIPE);
SET_PTHREAD();
/* Convert randy to decimal string, 0 if we dont' want stderr */
if (fd2p != NULL)
snprintf(num_seq, sizeof(num_seq),"%d",randy);
else
snprintf(num_seq, sizeof(num_seq),"%d",0);
/*
* Start setup of the stdin/stdout socket...
*/
lport = 0;
len = sizeof(struct sockaddr_in);
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
err("%p: %S: mcmd: socket call stdout failed: %m\n", ahost);
EXIT_PTHREAD();
}
memset (&ss, '\0', sizeof(ss));
ss.ss_family = AF_INET;
if (bind(s, (struct sockaddr *)&ss, len) < 0) {
err("%p: %S: mcmd: bind failed: %m\n", ahost);
goto bad;
}
sin.sin_family = AF_INET;
memcpy(&sin.sin_addr.s_addr, addr, IP_ADDR_LEN);
sin.sin_port = htons(MRSH_PORT);
if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
err("%p: %S: mcmd: connect failed: %m\n", ahost);
goto bad;
}
lport = 0;
s2 = -1;
if (fd2p != NULL) {
/*
* Start the socket setup for the stderr.
*/
struct sockaddr_in sin2;
if ((s2 = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
err("%p: %S: mcmd: socket call for stderr failed: %m\n", ahost);
goto bad;
}
memset (&sin2, 0, sizeof(sin2));
sin2.sin_family = AF_INET;
sin2.sin_addr.s_addr = htonl(INADDR_ANY);
sin2.sin_port = 0;
if (bind(s2,(struct sockaddr *)&sin2, sizeof(sin2)) < 0) {
err("%p: %S: mcmd: bind failed: %m\n", ahost);
close(s2);
goto bad;
}
len = sizeof(struct sockaddr);
/*
* Retrieve our port number so we can hand it to the server
* for the return (stderr) connection...
*/
/* getsockname is thread safe */
if (getsockname(s2,&m_socket,&len) < 0) {
err("%p: %S: mcmd: getsockname failed: %m\n", ahost);
close(s2);
goto bad;
}
getp = (struct sockaddr_in *)&m_socket;
lport = ntohs(getp->sin_port);
if (listen(s2, 5) < 0) {
err("%p: %S: mcmd: listen() failed: %m\n", ahost);
close(s2);
goto bad;
}
}
/* put port in buffer. will be 0 if user didn't want stderr */
snprintf(num,sizeof(num),"%d",lport);
/*
* Use special keyed string if target is localhost, otherwise,
* encode the IP addr string.
*/
if (!encode_localhost_string (ahost, haddrdot, sizeof (haddrdot))) {
/* inet_ntoa is not thread safe, so we use the following,
* which is more or less ripped from glibc
*/
memcpy(&m_in.s_addr, addr, IP_ADDR_LEN);
hptr = (unsigned char *)&m_in;
sprintf(haddrdot, "%u.%u.%u.%u", hptr[0], hptr[1], hptr[2], hptr[3]);
}
/*
* We call munge_encode which will take what we write in and return a
* pointer to an munged buffer. What we get back is a null terminated
* string of encrypted characters.
*
* The format of the unmunged buffer is as follows (each a string terminated
* with a '\0' (null):
*
* stderr_port_number & /dev/urandom_client_produce_number are 0
* if user did not request stderr socket
* SIZE EXAMPLE
* ========== =============
* remote_user_name variable "mhaskell"
* '\0'
* protocol version < 12 bytes "1.2"
* '\0'
* dotted_decimal_address_of_this_server 7-15 bytes "134.9.11.155"
* '\0'
* stderr_port_number 4-8 bytes "50111"
* '\0'
* /dev/urandom_client_produced_number 1-8 bytes "1f79ca0e"
* '\0'
* users_command variable "ls -al"
* '\0' '\0'
*
* (The last extra null is accounted for in the following line's
* last strlen() call.)
*
*/
mpvers = MRSH_PROTOCOL_VERSION;
mcount = ((strlen(remuser)+1) + (strlen(mpvers)+1) +
(strlen(haddrdot)+1) + (strlen(num)+1) +
(strlen(num_seq)+1) + strlen(cmd)+2);
tmbuf = mbuf = malloc(mcount);
if (tmbuf == NULL) {
err("%p: %S: mcmd: Error from malloc\n", ahost);
close(s2);
goto bad;
}
/*
* The following memset() call takes the extra trailing null as
* part of its count as well.
*/
memset(mbuf,0,mcount);
mptr = strcpy(mbuf, remuser);
mptr += strlen(remuser)+1;
mptr = strcpy(mptr, mpvers);
mptr += strlen(mpvers)+1;
mptr = strcpy(mptr, haddrdot);
mptr += strlen(haddrdot)+1;
mptr = strcpy(mptr, num);
mptr += strlen(num)+1;
mptr = strcpy(mptr, num_seq);
mptr += strlen(num_seq)+1;
mptr = strcpy(mptr, cmd);
ctx = munge_ctx_create();
if ((rv = munge_encode(&m,ctx,mbuf,mcount)) != EMUNGE_SUCCESS) {
err("%p: %S: mcmd: munge_encode: %s\n", ahost, munge_ctx_strerror(ctx));
munge_ctx_destroy(ctx);
if (s2 >= 0)
close(s2);
free(tmbuf);
goto bad;
}
munge_ctx_destroy(ctx);
mcount = (strlen(m)+1);
/*
* Write stderr port in the clear in case we can't decode for
* some reason (i.e. bad credentials). May be 0 if user
* doesn't want stderr
*/
if (fd2p != NULL) {
rv = fd_write_n(s, num, strlen(num)+1);
if (rv != (strlen(num) + 1)) {
free(m);
free(tmbuf);
if (errno == EPIPE)
err("%p: %S: mcmd: Lost connection (EPIPE): %m", ahost);
else
err("%p: %S: mcmd: Write of stderr port failed: %m\n", ahost);
close(s2);
goto bad;
}
} else {
write(s, "", 1);
lport = 0;
}
/*
* Write the munge_encoded blob to the socket.
*/
rv = fd_write_n(s, m, mcount);
if (rv != mcount) {
free(m);
free(tmbuf);
if (errno == EPIPE)
err("%p: %S: mcmd: Lost connection: %m\n", ahost);
else
err("%p: %S: mcmd: Write to socket failed: %m\n", ahost);
close(s2);
goto bad;
}
free(m);
free(tmbuf);
if (fd2p != NULL) {
/*
* Wait for stderr connection from daemon.
*/
int s3;
errno = 0;
xpfds[0].fd = s;
xpfds[1].fd = s2;
xpfds[0].events = xpfds[1].events = XPOLLREAD;
if ( ((rv = xpoll(xpfds, 2, -1)) < 0)
|| rv != 1
|| (xpfds[0].revents > 0)) {
if (errno != 0)
err("%p: %S: mcmd: xpoll (setting up stderr): %m\n", ahost);
else
err("%p: %S: mcmd: xpoll: protocol failure in circuit setup\n",
ahost);
(void) close(s2);
goto bad;
}
errno = 0;
len = sizeof(from); /* arg to accept */
if ((s3 = accept(s2, (struct sockaddr *)&from, &len)) < 0) {
err("%p: %S: mcmd: accept (stderr) failed: %m\n", ahost);
close(s2);
goto bad;
}
if (from.sin_family != AF_INET) {
err("%p: %S: mcmd: bad family type: %d\n", ahost, from.sin_family);
goto bad2;
}
close(s2);
/*
* The following fixes a race condition between the daemon
* and the client. The daemon is waiting for a null to
* proceed. We do this to make sure that we have our
* socket is up prior to the daemon running the command.
*/
if (write(s,"",1) < 0) {
err("%p: %S: mcmd: Could not communicate to daemon to proceed: %m\n", ahost);
close(s3);
goto bad;
}
/*
* Read from our stderr. The server should have placed our
* random number we generated onto this socket.
*/
rv = fd_read_n(s3, &rand, sizeof(rand));
if (rv != (ssize_t) (sizeof(rand))) {
err("%p: %S: mcmd: Bad read of expected verification "
"number off of stderr socket: %m\n", ahost);
close(s3);
goto bad;
}
randl = ntohl(rand);
if (randl != randy) {
char tmpbuf[LINEBUFSIZE] = {0};
char *tptr = &tmpbuf[0];
memcpy(tptr,(char *) &rand,sizeof(rand));
tptr += sizeof(rand);
if (fd_read_line (s3, tptr, LINEBUFSIZE) < 0)
err("%p: %S: mcmd: Read error from remote host: %m\n", ahost);
else
err("%p: %S: mcmd: Error: %s\n", ahost, &tmpbuf[0]);
close(s3);
goto bad;
}
/*
* Set the stderr file descriptor for the user...
*/
*fd2p = s3;
}
if ((rv = read(s, &c, 1)) < 0) {
err("%p: %S: mcmd: read: protocol failure: %m\n", ahost);
goto bad2;
}
if (rv != 1) {
err("%p: %S: mcmd: read: protocol failure: invalid response\n", ahost);
goto bad2;
}
if (c != '\0') {
/* retrieve error string from remote server */
char tmpbuf[LINEBUFSIZE];
if (fd_read_line (s, &tmpbuf[0], LINEBUFSIZE) < 0)
err("%p: %S: mcmd: Error from remote host\n", ahost);
else
err("%p: %S: mcmd: Error: %s\n", ahost, tmpbuf);
goto bad2;
}
RESTORE_PTHREAD();
return (s);
bad2:
if (lport)
close(*fd2p);
bad:
close(s);
EXIT_PTHREAD();
}