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-rw-r--r--libc/inet/rpc/rcmd.c692
1 files changed, 0 insertions, 692 deletions
diff --git a/libc/inet/rpc/rcmd.c b/libc/inet/rpc/rcmd.c
deleted file mode 100644
index 63b0ef2e2..000000000
--- a/libc/inet/rpc/rcmd.c
+++ /dev/null
@@ -1,692 +0,0 @@
-/*
- * Copyright (C) 1998 WIDE Project.
- * 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.
- * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
- */
-/*
- * Copyright (c) 1983, 1993, 1994
- * 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.
- */
-
-#if 0
-static char sccsid[] = "@(#)rcmd.c 8.3 (Berkeley) 3/26/94";
-#endif /* LIBC_SCCS and not lint */
-
-#define __UCLIBC_HIDE_DEPRECATED__
-#include <features.h>
-#include <sys/param.h>
-#include <sys/poll.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <signal.h>
-#include <fcntl.h>
-#include <netdb.h>
-#include <unistd.h>
-#include <pwd.h>
-#include <errno.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <stdlib.h>
-#ifdef __UCLIBC_HAS_WCHAR__
-#include <wchar.h>
-#endif
-#include <sys/uio.h>
-#include <bits/uClibc_alloc.h>
-
-/* sigsetmask and sigblock are not provided anymore, until this file is corrected,
- * include the sources */
-#include "../../signal/sigblock.c"
-#include "../../signal/sigsetmask.c"
-
-
-/* some forward declarations */
-static int __ivaliduser2(FILE *hostf, u_int32_t raddr,
- const char *luser, const char *ruser, const char *rhost);
-static int iruserok2 (u_int32_t raddr, int superuser, const char *ruser,
- const char *luser, const char *rhost);
-
-
-int rcmd(char **ahost, u_short rport, const char *locuser, const char *remuser,
- const char *cmd, int *fd2p)
-{
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- int herr;
- struct hostent hostbuf;
- size_t hstbuflen;
- char *tmphstbuf;
-#endif
- struct hostent *hp;
- struct sockaddr_in sin, from;
- struct pollfd pfd[2];
- int32_t oldmask;
- pid_t pid;
- int s, lport, timo;
- char c;
-
- pid = getpid();
-
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- hstbuflen = 1024;
- tmphstbuf = stack_heap_alloc(hstbuflen);
-
- while (gethostbyname_r (*ahost, &hostbuf, tmphstbuf,
- hstbuflen, &hp, &herr) != 0 || hp == NULL)
- {
- if (herr != NETDB_INTERNAL || errno != ERANGE)
- {
- __set_h_errno (herr);
- stack_heap_free(tmphstbuf);
- herror(*ahost);
- return -1;
- }
- else
- {
- /* Enlarge the buffer. */
- hstbuflen *= 2;
- stack_heap_free(tmphstbuf);
- tmphstbuf = stack_heap_alloc(hstbuflen);
- }
- }
- stack_heap_free(tmphstbuf);
-#else /* call the non-reentrant version */
- if ((hp = gethostbyname(*ahost)) == NULL) {
- return -1;
- }
-#endif
- pfd[0].events = POLLIN;
- pfd[1].events = POLLIN;
-
- *ahost = hp->h_name;
- oldmask = sigblock(__sigmask(SIGURG)); /* sigblock */
- for (timo = 1, lport = IPPORT_RESERVED - 1;;) {
- s = rresvport(&lport);
- if (s < 0) {
- if (errno == EAGAIN)
- (void)fprintf(stderr,
- "rcmd: socket: All ports in use\n");
- else
- (void)fprintf(stderr, "rcmd: socket: %m\n");
- sigsetmask(oldmask); /* sigsetmask */
- return -1;
- }
- fcntl(s, F_SETOWN, pid);
- sin.sin_family = hp->h_addrtype;
- memmove(&sin.sin_addr, hp->h_addr_list[0],
- MIN (sizeof (sin.sin_addr), hp->h_length));
- sin.sin_port = rport;
- if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0) /* __connect */
- break;
- (void)close(s);
- if (errno == EADDRINUSE) {
- lport--;
- continue;
- }
- if (errno == ECONNREFUSED && timo <= 16) {
- (void)sleep(timo); /* __sleep */
- timo *= 2;
- continue;
- }
- if (hp->h_addr_list[1] != NULL) {
- int oerrno = errno;
-
- (void)fprintf(stderr, "connect to address %s: ",
- inet_ntoa(sin.sin_addr));
- __set_errno (oerrno);
- perror(0);
- hp->h_addr_list++;
- memmove(&sin.sin_addr, hp->h_addr_list[0],
- MIN (sizeof (sin.sin_addr), hp->h_length));
- (void)fprintf(stderr, "Trying %s...\n",
- inet_ntoa(sin.sin_addr));
- continue;
- }
- (void)fprintf(stderr, "%s: %m\n", hp->h_name);
- sigsetmask(oldmask); /* __sigsetmask */
- return -1;
- }
- lport--;
- if (fd2p == 0) {
- write(s, "", 1);
- lport = 0;
- } else {
- char num[8];
- int s2 = rresvport(&lport), s3;
- socklen_t len = sizeof(from);
-
- if (s2 < 0)
- goto bad;
- listen(s2, 1);
- (void)snprintf(num, sizeof(num), "%d", lport); /* __snprintf */
- if (write(s, num, strlen(num)+1) != strlen(num)+1) {
- (void)fprintf(stderr,
- "rcmd: write (setting up stderr): %m\n");
- (void)close(s2);
- goto bad;
- }
- pfd[0].fd = s;
- pfd[1].fd = s2;
- __set_errno (0);
- if (poll (pfd, 2, -1) < 1 || (pfd[1].revents & POLLIN) == 0){
- if (errno != 0)
- (void)fprintf(stderr, "rcmd: poll (setting up stderr): %m\n");
- else
- (void)fprintf(stderr, "poll: protocol failure in circuit setup\n");
- (void)close(s2);
- goto bad;
- }
- s3 = accept(s2, (struct sockaddr *)&from, &len);
- (void)close(s2);
- if (s3 < 0) {
- (void)fprintf(stderr,
- "rcmd: accept: %m\n");
- lport = 0;
- goto bad;
- }
- *fd2p = s3;
- from.sin_port = ntohs((u_short)from.sin_port);
- if (from.sin_family != AF_INET ||
- from.sin_port >= IPPORT_RESERVED ||
- from.sin_port < IPPORT_RESERVED / 2) {
- (void)fprintf(stderr,
- "socket: protocol failure in circuit setup\n");
- goto bad2;
- }
- }
- (void)write(s, locuser, strlen(locuser)+1);
- (void)write(s, remuser, strlen(remuser)+1);
- (void)write(s, cmd, strlen(cmd)+1);
- if (read(s, &c, 1) != 1) {
- (void)fprintf(stderr,
- "rcmd: %s: %m\n", *ahost);
- goto bad2;
- }
- if (c != 0) {
- while (read(s, &c, 1) == 1) {
- (void)write(STDERR_FILENO, &c, 1);
- if (c == '\n')
- break;
- }
- goto bad2;
- }
- sigsetmask(oldmask);
- return s;
-bad2:
- if (lport)
- (void)close(*fd2p);
-bad:
- (void)close(s);
- sigsetmask(oldmask);
- return -1;
-}
-
-int rresvport(int *alport)
-{
- struct sockaddr_in sin;
- int s;
-
- sin.sin_family = AF_INET;
- sin.sin_addr.s_addr = INADDR_ANY;
- s = socket(AF_INET, SOCK_STREAM, 0);
- if (s < 0)
- return -1;
- for (;;) {
- sin.sin_port = htons((u_short)*alport);
- if (bind(s, (struct sockaddr *)&sin, sizeof(sin)) >= 0)
- return s;
- if (errno != EADDRINUSE) {
- (void)close(s);
- return -1;
- }
- (*alport)--;
- if (*alport == IPPORT_RESERVED/2) {
- (void)close(s);
- __set_errno (EAGAIN); /* close */
- return -1;
- }
- }
-
- return -1;
-}
-libc_hidden_def(rresvport)
-
-/* This needs to be exported ... while it is not a documented interface
- * for rcp related apps, it's a required one that is used to control the
- * rhost behavior. Legacy sucks.
- */
-int __check_rhosts_file = 1;
-
-int ruserok(const char *rhost, int superuser, const char *ruser,
- const char *luser)
-{
- struct hostent *hp;
- u_int32_t addr;
- char **ap;
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- size_t buflen;
- char *buffer;
- int herr;
- struct hostent hostbuf;
-#endif
-
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- buflen = 1024;
- buffer = stack_heap_alloc(buflen);
-
- while (gethostbyname_r (rhost, &hostbuf, buffer,
- buflen, &hp, &herr) != 0 || hp == NULL)
- {
- if (herr != NETDB_INTERNAL || errno != ERANGE) {
- stack_heap_free(buffer);
- return -1;
- } else
- {
- /* Enlarge the buffer. */
- buflen *= 2;
- stack_heap_free(buffer);
- buffer = stack_heap_alloc(buflen);
- }
- }
- stack_heap_free(buffer);
-#else
- if ((hp = gethostbyname(rhost)) == NULL) {
- return -1;
- }
-#endif
- for (ap = hp->h_addr_list; *ap; ++ap) {
- memmove(&addr, *ap, sizeof(addr));
- if (iruserok2(addr, superuser, ruser, luser, rhost) == 0)
- return 0;
- }
- return -1;
-}
-
-
-/* Extremely paranoid file open function. */
-static FILE *
-iruserfopen (const char *file, uid_t okuser)
-{
- struct stat st;
- char *cp = NULL;
- FILE *res = NULL;
-
- /* If not a regular file, if owned by someone other than user or
- root, if writeable by anyone but the owner, or if hardlinked
- anywhere, quit. */
- if (lstat (file, &st))
- cp = "lstat failed";
- else if (!S_ISREG (st.st_mode))
- cp = "not regular file";
- else
- {
- res = fopen (file, "r");
- if (!res)
- cp = "cannot open";
- else if (fstat (fileno (res), &st) < 0)
- cp = "fstat failed";
- else if (st.st_uid && st.st_uid != okuser)
- cp = "bad owner";
- else if (st.st_mode & (S_IWGRP|S_IWOTH))
- cp = "writeable by other than owner";
- else if (st.st_nlink > 1)
- cp = "hard linked somewhere";
- }
-
- /* If there were any problems, quit. */
- if (cp != NULL)
- {
- if (res)
- fclose (res);
- return NULL;
- }
-
- return res;
-}
-
-
-/*
- * New .rhosts strategy: We are passed an ip address. We spin through
- * hosts.equiv and .rhosts looking for a match. When the .rhosts only
- * has ip addresses, we don't have to trust a nameserver. When it
- * contains hostnames, we spin through the list of addresses the nameserver
- * gives us and look for a match.
- *
- * Returns 0 if ok, -1 if not ok.
- */
-static int
-iruserok2 (u_int32_t raddr, int superuser, const char *ruser, const char *luser,
- const char *rhost)
-{
- FILE *hostf = NULL;
- int isbad = -1;
-
- if (!superuser)
- hostf = iruserfopen (_PATH_HEQUIV, 0);
-
- if (hostf) {
- isbad = __ivaliduser2 (hostf, raddr, luser, ruser, rhost);
- fclose (hostf);
-
- if (!isbad)
- return 0;
- }
-
- if (__check_rhosts_file || superuser) {
- char *pbuf;
- struct passwd *pwd;
- size_t dirlen;
- uid_t uid;
-
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
- struct passwd pwdbuf;
- char *buffer = stack_heap_alloc(buflen);
-
- if (getpwnam_r (luser, &pwdbuf, buffer,
- buflen, &pwd) != 0 || pwd == NULL)
- {
- stack_heap_free(buffer);
- return -1;
- }
- stack_heap_free(buffer);
-#else
- if ((pwd = getpwnam(luser)) == NULL)
- return -1;
-#endif
-
- dirlen = strlen (pwd->pw_dir);
- pbuf = malloc (dirlen + sizeof "/.rhosts");
- strcpy (pbuf, pwd->pw_dir);
- strcat (pbuf, "/.rhosts");
-
- /* Change effective uid while reading .rhosts. If root and
- reading an NFS mounted file system, can't read files that
- are protected read/write owner only. */
- uid = geteuid ();
- seteuid (pwd->pw_uid);
- hostf = iruserfopen (pbuf, pwd->pw_uid);
- free(pbuf);
-
- if (hostf != NULL) {
- isbad = __ivaliduser2 (hostf, raddr, luser, ruser, rhost);
- fclose (hostf);
- }
-
- seteuid (uid);
- return isbad;
- }
- return -1;
-}
-
-/* This is the exported version. */
-int iruserok (u_int32_t raddr, int superuser, const char * ruser, const char * luser);
-int iruserok (u_int32_t raddr, int superuser, const char * ruser, const char * luser)
-{
- return iruserok2 (raddr, superuser, ruser, luser, "-");
-}
-
-
-/*
- * XXX
- * Don't make static, used by lpd(8).
- *
- * This function is not used anymore. It is only present because lpd(8)
- * calls it (!?!). We simply call __invaliduser2() with an illegal rhost
- * argument. This means that netgroups won't work in .rhost/hosts.equiv
- * files. If you want lpd to work with netgroups, fix lpd to use ruserok()
- * or PAM.
- * Returns 0 if ok, -1 if not ok.
- */
-int
-__ivaliduser(FILE *hostf, u_int32_t raddr, const char *luser, const char *ruser);
-int
-__ivaliduser(FILE *hostf, u_int32_t raddr, const char *luser, const char *ruser)
-{
- return __ivaliduser2(hostf, raddr, luser, ruser, "-");
-}
-
-
-/* Returns 1 on positive match, 0 on no match, -1 on negative match. */
-static int
-__icheckhost (u_int32_t raddr, char *lhost, const char *rhost)
-{
- struct hostent *hp;
- u_int32_t laddr;
- int negate=1; /* Multiply return with this to get -1 instead of 1 */
- char **pp;
-
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- int save_errno;
- size_t buflen;
- char *buffer;
- struct hostent hostbuf;
- int herr;
-#endif
-
-#ifdef HAVE_NETGROUP
- /* Check nis netgroup. */
- if (strncmp ("+@", lhost, 2) == 0)
- return innetgr (&lhost[2], rhost, NULL, NULL);
-
- if (strncmp ("-@", lhost, 2) == 0)
- return -innetgr (&lhost[2], rhost, NULL, NULL);
-#endif /* HAVE_NETGROUP */
-
- /* -host */
- if (strncmp ("-", lhost,1) == 0) {
- negate = -1;
- lhost++;
- } else if (strcmp ("+",lhost) == 0) {
- return 1; /* asking for trouble, but ok.. */
- }
-
- /* Try for raw ip address first. */
- if (isdigit (*lhost) && (laddr = inet_addr (lhost)) != INADDR_NONE)
- return negate * (! (raddr ^ laddr));
-
- /* Better be a hostname. */
-#ifdef __UCLIBC_HAS_REENTRANT_RPC__
- buflen = 1024;
- buffer = malloc(buflen);
- save_errno = errno;
-
- while (gethostbyname_r (lhost, &hostbuf, buffer, buflen, &hp, &herr)
- != 0) {
- free(buffer);
- return (0);
- }
- free(buffer);
- __set_errno (save_errno);
-#else
- hp = gethostbyname(lhost);
-#endif /* __UCLIBC_HAS_REENTRANT_RPC__ */
-
- if (hp == NULL)
- return 0;
-
- /* Spin through ip addresses. */
- for (pp = hp->h_addr_list; *pp; ++pp)
- if (!memcmp (&raddr, *pp, sizeof (u_int32_t)))
- return negate;
-
- /* No match. */
- return (0);
-}
-
-/* Returns 1 on positive match, 0 on no match, -1 on negative match. */
-static int
-__icheckuser (const char *luser, const char *ruser)
-{
-
- /*
- luser is user entry from .rhosts/hosts.equiv file
- ruser is user id on remote host
- */
-
-#ifdef HAVE_NETGROUP
- /* [-+]@netgroup */
- if (strncmp ("+@", luser, 2) == 0)
- return innetgr (&luser[2], NULL, ruser, NULL);
-
- if (strncmp ("-@", luser,2) == 0)
- return -innetgr (&luser[2], NULL, ruser, NULL);
-#endif /* HAVE_NETGROUP */
-
- /* -user */
- if (strncmp ("-", luser, 1) == 0)
- return -(strcmp (&luser[1], ruser) == 0);
-
- /* + */
- if (strcmp ("+", luser) == 0)
- return 1;
-
- /* simple string match */
- return strcmp (ruser, luser) == 0;
-}
-
-/*
- * Returns 1 for blank lines (or only comment lines) and 0 otherwise
- */
-static int
-__isempty(char *p)
-{
- while (*p && isspace (*p)) {
- ++p;
- }
-
- return (*p == '\0' || *p == '#') ? 1 : 0 ;
-}
-
-/*
- * Returns 0 if positive match, -1 if _not_ ok.
- */
-static int
-__ivaliduser2(FILE *hostf, u_int32_t raddr, const char *luser,
- const char *ruser, const char *rhost)
-{
- register const char *user;
- register char *p;
- int hcheck, ucheck;
- char *buf = NULL;
- size_t bufsize = 0;
- int retval = -1;
-
- while (getline (&buf, &bufsize, hostf) > 0) {
- buf[bufsize - 1] = '\0'; /* Make sure it's terminated. */
- p = buf;
-
- /* Skip empty or comment lines */
- if (__isempty (p)) {
- continue;
- }
-
- /* Skip lines that are too long. */
- if (strchr (p, '\n') == NULL) {
- int ch = getc_unlocked (hostf);
-
- while (ch != '\n' && ch != EOF)
- ch = getc_unlocked (hostf);
- continue;
- }
-
- for (;*p && !isspace(*p); ++p) {
- *p = tolower (*p);
- }
-
- /* Next we want to find the permitted name for the remote user. */
- if (*p == ' ' || *p == '\t') {
- /* <nul> terminate hostname and skip spaces */
- for (*p++='\0'; *p && isspace (*p); ++p);
-
- user = p; /* this is the user's name */
- while (*p && !isspace (*p))
- ++p; /* find end of user's name */
- } else
- user = p;
-
- *p = '\0'; /* <nul> terminate username (+host?) */
-
- /* buf -> host(?) ; user -> username(?) */
-
- /* First check host part */
- hcheck = __icheckhost (raddr, buf, rhost);
-
- if (hcheck < 0)
- break;
-
- if (hcheck) {
- /* Then check user part */
- if (! (*user))
- user = luser;
-
- ucheck = __icheckuser (user, ruser);
-
- /* Positive 'host user' match? */
- if (ucheck > 0) {
- retval = 0;
- break;
- }
-
- /* Negative 'host -user' match? */
- if (ucheck < 0)
- break;
-
- /* Neither, go on looking for match */
- }
- }
-
- free (buf);
-
- return retval;
-}
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