diff options
Diffstat (limited to 'inet/rexec.c')
| -rw-r--r-- | inet/rexec.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/inet/rexec.c b/inet/rexec.c deleted file mode 100644 index bda536723b..0000000000 --- a/inet/rexec.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Copyright (c) 1980, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <sys/types.h> -#include <sys/socket.h> - -#include <netinet/in.h> - -#include <alloca.h> -#include <stdio.h> -#include <netdb.h> -#include <errno.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/uio.h> - -int rexecoptions; -libc_freeres_ptr (static char *ahostbuf); - -int -rexec_af (char **ahost, int rport, const char *name, const char *pass, - const char *cmd, int *fd2p, sa_family_t af) -{ - struct sockaddr_storage from; - struct addrinfo hints, *res0; - const char *orig_name = name; - const char *orig_pass = pass; - u_short port = 0; - int s, timo = 1, s3; - char c; - int gai; - char servbuff[NI_MAXSERV]; - - __snprintf(servbuff, sizeof(servbuff), "%d", ntohs(rport)); - servbuff[sizeof(servbuff) - 1] = '\0'; - - memset(&hints, '\0', sizeof(hints)); - hints.ai_family = af; - hints.ai_socktype = SOCK_STREAM; - hints.ai_flags = AI_CANONNAME; - gai = getaddrinfo(*ahost, servbuff, &hints, &res0); - if (gai){ - /* XXX: set errno? */ - return -1; - } - - if (res0->ai_canonname){ - free (ahostbuf); - ahostbuf = __strdup (res0->ai_canonname); - if (ahostbuf == NULL) { - perror ("rexec: strdup"); - return (-1); - } - *ahost = ahostbuf; - } else { - *ahost = NULL; - __set_errno (ENOENT); - return -1; - } - ruserpass(res0->ai_canonname, &name, &pass); -retry: - /* NB: No SOCK_CLOEXEC for backwards compatibility. */ - s = __socket(res0->ai_family, res0->ai_socktype, 0); - if (s < 0) { - perror("rexec: socket"); - return (-1); - } - if (__connect(s, res0->ai_addr, res0->ai_addrlen) < 0) { - if (errno == ECONNREFUSED && timo <= 16) { - (void) __close(s); - __sleep(timo); - timo *= 2; - goto retry; - } - perror(res0->ai_canonname); - return (-1); - } - if (fd2p == 0) { - (void) __write(s, "", 1); - port = 0; - } else { - char num[32]; - int s2; - union - { - struct sockaddr_storage ss; - struct sockaddr sa; - } sa2; - socklen_t sa2len; - - s2 = __socket(res0->ai_family, res0->ai_socktype, 0); - if (s2 < 0) { - (void) __close(s); - return (-1); - } - __listen(s2, 1); - sa2len = sizeof (sa2); - if (__getsockname(s2, &sa2.sa, &sa2len) < 0) { - perror("getsockname"); - (void) __close(s2); - goto bad; - } else if (sa2len != SA_LEN(&sa2.sa)) { - __set_errno(EINVAL); - (void) __close(s2); - goto bad; - } - port = 0; - if (!getnameinfo(&sa2.sa, sa2len, - NULL, 0, servbuff, sizeof(servbuff), - NI_NUMERICSERV)) - port = atoi(servbuff); - (void) sprintf(num, "%u", port); - (void) __write(s, num, strlen(num)+1); - { socklen_t len = sizeof (from); - s3 = TEMP_FAILURE_RETRY (accept(s2, (struct sockaddr *)&from, - &len)); - __close(s2); - if (s3 < 0) { - perror("accept"); - port = 0; - goto bad; - } - } - *fd2p = s3; - } - - struct iovec iov[3] = - { - [0] = { .iov_base = (void *) name, .iov_len = strlen (name) + 1 }, - /* should public key encypt the password here */ - [1] = { .iov_base = (void *) pass, .iov_len = strlen (pass) + 1 }, - [2] = { .iov_base = (void *) cmd, .iov_len = strlen (cmd) + 1 } - }; - (void) TEMP_FAILURE_RETRY (__writev (s, iov, 3)); - - /* We don't need the memory allocated for the name and the password - in ruserpass anymore. */ - if (name != orig_name) - free ((char *) name); - if (pass != orig_pass) - free ((char *) pass); - - if (__read(s, &c, 1) != 1) { - perror(*ahost); - goto bad; - } - if (c != 0) { - while (__read(s, &c, 1) == 1) { - (void) __write(2, &c, 1); - if (c == '\n') - break; - } - goto bad; - } - freeaddrinfo(res0); - return (s); -bad: - if (port) - (void) __close(*fd2p); - (void) __close(s); - freeaddrinfo(res0); - return (-1); -} -libc_hidden_def (rexec_af) - -int -rexec (char **ahost, int rport, const char *name, const char *pass, - const char *cmd, int *fd2p) -{ - return rexec_af(ahost, rport, name, pass, cmd, fd2p, AF_INET); -} |