262 lines
7.3 KiB
C
262 lines
7.3 KiB
C
/*
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* Copyright (c) 1997-2006 Erez Zadok
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* Copyright (c) 1990 Jan-Simon Pendry
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* Copyright (c) 1990 Imperial College of Science, Technology & Medicine
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry at Imperial College, London.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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* File: am-utils/amq/pawd.c
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*
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*/
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/*
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* pawd is similar to pwd, except that it returns more "natural" versions of
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* pathnames for directories automounted with the amd automounter. If any
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* arguments are given, the "more natural" form of the given pathnames are
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* printed.
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*
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* Paul Anderson (paul@ed.lfcs)
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <am_defs.h>
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#include <amq.h>
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/* statics */
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static char *localhost = "localhost";
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static char transform[MAXPATHLEN];
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#ifdef HAVE_CNODEID
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static char *
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cluster_server(void)
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{
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# ifdef HAVE_EXTERN_GETCCENT
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struct cct_entry *cp;
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# endif /* HAVE_EXTERN_GETCCENT */
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if (cnodeid() == 0)
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return localhost;
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# ifdef HAVE_EXTERN_GETCCENT
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while ((cp = getccent()))
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if (cp->cnode_type == 'r')
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return cp->cnode_name;
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# endif /* HAVE_EXTERN_GETCCENT */
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return localhost;
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}
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#endif /* HAVE_CNODEID */
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/* DISK_HOME_HACK added by gdmr */
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#ifdef DISK_HOME_HACK
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static char *
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hack_name(char *dir)
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{
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char partition[MAXPATHLEN];
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char username[MAXPATHLEN];
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char hesiod_lookup[MAXPATHLEN];
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char *to, *ch, *hes_name, *dot;
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char **hes;
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#ifdef DEBUG
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fprintf(stderr, "hack_name(%s)\n", dir);
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#endif /* DEBUG */
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if (dir[0] == '/' && dir[1] == 'a' && dir[2] == '/') {
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/* Could be /a/server/disk/home/partition/user... */
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ch = dir + 3;
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while (*ch && *ch != '/') ch++; /* Skip server */
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if (!NSTREQ(ch, "/disk/home/", 11))
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return NULL; /* Nope */
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/* Looking promising, next should be the partition name */
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ch += 11;
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to = partition;
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while (*ch && *ch != '/') *to++ = *ch++;
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to = '\0';
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if (!(*ch))
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return NULL; /* Off the end */
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/* Now the username */
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ch++;
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to = username;
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while (*ch && *ch != '/') *to++ = *ch++;
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to = '\0';
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#ifdef DEBUG
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fprintf(stderr, "partition %s, username %s\n", partition, username);
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#endif /* DEBUG */
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xsnprintf(hesiod_lookup, sizeof(hesiod_lookup),
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"%s.homes-remote", username);
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hes = hes_resolve(hesiod_lookup, "amd");
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if (!hes)
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return NULL;
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#ifdef DEBUG
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fprintf(stderr, "hesiod -> <%s>\n", *hes);
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#endif /* DEBUG */
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hes_name = strstr(*hes, "/homes/remote/");
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if (!hes_name) return NULL;
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hes_name += 14;
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#ifdef DEBUG
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fprintf(stderr, "hesiod -> <%s>\n", hes_name);
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#endif /* DEBUG */
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dot = hes_name;
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while (*dot && *dot != '.') dot++;
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*dot = '\0';
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#ifdef DEBUG
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fprintf(stderr, "hesiod -> <%s>\n", hes_name);
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#endif /* DEBUG */
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if (strcmp(partition, hes_name)) return NULL;
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#ifdef DEBUG
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fprintf(stderr, "A match, munging....\n");
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#endif /* DEBUG */
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xstrlcpy(transform, "/home/", sizeof(transform));
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xstrlcat(transform, username, sizeof(transform));
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if (*ch)
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xstrlcat(transform, ch, sizeof(transform));
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#ifdef DEBUG
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fprintf(stderr, "Munged to <%s>\n", transform);
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#endif /* DEBUG */
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return transform;
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}
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return NULL;
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}
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#endif /* DISK_HOME_HACK */
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/*
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* The routine transform_dir(path) transforms pathnames of directories
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* mounted with the amd automounter to produce a more "natural" version.
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* The automount table is obtained from the local amd via the rpc interface
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* and reverse lookups are repeatedly performed on the directory name
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* substituting the name of the automount link for the value of the link
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* whenever it occurs as a prefix of the directory name.
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*/
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static char *
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transform_dir(char *dir)
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{
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#ifdef DISK_HOME_HACK
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char *ch;
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#endif /* DISK_HOME_HACK */
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char *server;
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struct sockaddr_in server_addr;
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int s = RPC_ANYSOCK;
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CLIENT *clnt;
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struct hostent *hp;
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struct timeval tmo = {10, 0};
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char *dummystr;
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amq_string *spp;
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#ifdef DISK_HOME_HACK
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if (ch = hack_name(dir))
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return ch;
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#endif /* DISK_HOME_HACK */
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#ifdef HAVE_CNODEID
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server = cluster_server();
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#else /* not HAVE_CNODEID */
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server = localhost;
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#endif /* not HAVE_CNODEID */
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if ((hp = gethostbyname(server)) == NULL)
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return dir;
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memset(&server_addr, 0, sizeof(server_addr));
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/* as per POSIX, sin_len need not be set (used internally by kernel) */
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server_addr.sin_family = AF_INET;
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server_addr.sin_addr = *(struct in_addr *) hp->h_addr;
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clnt = clntudp_create(&server_addr, AMQ_PROGRAM, AMQ_VERSION, tmo, &s);
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if (clnt == NULL)
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clnt = clnttcp_create(&server_addr, AMQ_PROGRAM, AMQ_VERSION, &s, 0, 0);
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if (clnt == NULL)
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return dir;
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xstrlcpy(transform, dir, sizeof(transform));
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dummystr = transform;
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spp = amqproc_pawd_1((amq_string *) &dummystr, clnt);
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if (spp && *spp && **spp) {
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xstrlcpy(transform, *spp, sizeof(transform));
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XFREE(*spp);
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}
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clnt_destroy(clnt);
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return transform;
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}
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/* getawd() is a substitute for getwd() which transforms the path */
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static char *
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getawd(char *path, size_t l)
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{
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#ifdef HAVE_GETCWD
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char *wd = getcwd(path, MAXPATHLEN);
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#else /* not HAVE_GETCWD */
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char *wd = getwd(path);
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#endif /* not HAVE_GETCWD */
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if (wd == NULL) {
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return NULL;
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}
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xstrlcpy(path, transform_dir(wd), l);
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return path;
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}
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int
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main(int argc, char *argv[])
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{
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char tmp_buf[MAXPATHLEN], *wd;
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if (argc == 1) {
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wd = getawd(tmp_buf, sizeof(tmp_buf));
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if (wd == NULL) {
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fprintf(stderr, "pawd: %s\n", tmp_buf);
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exit(1);
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} else {
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fprintf(stdout, "%s\n", wd);
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}
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} else {
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while (--argc) {
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wd = transform_dir(*++argv);
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fprintf(stdout, "%s\n", wd);
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}
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}
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exit(0);
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}
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