diff options
Diffstat (limited to 'contrib/amd/amq/pawd.c')
| -rw-r--r-- | contrib/amd/amq/pawd.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/contrib/amd/amq/pawd.c b/contrib/amd/amq/pawd.c new file mode 100644 index 0000000..86ed55f --- /dev/null +++ b/contrib/amd/amq/pawd.c @@ -0,0 +1,296 @@ +/* + * Copyright (c) 1997-1998 Erez Zadok + * Copyright (c) 1990 Jan-Simon Pendry + * Copyright (c) 1990 Imperial College of Science, Technology & Medicine + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry at Imperial College, London. + * + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 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. + * + * %W% (Berkeley) %G% + * + * $Id: pawd.c,v 5.2.2.1 1992/02/09 15:09:16 jsp beta $ + * + */ + +/* + * pawd is similar to pwd, except that it returns more "natural" versions of + * pathnames for directories automounted with the amd automounter. If any + * arguments are given, the "more natural" form of the given pathnames are + * printed. + * + * Paul Anderson (paul@ed.lfcs) + * + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif /* HAVE_CONFIG_H */ +#include <am_defs.h> +#include <amq.h> + +/* dummy variables */ +char *progname; +char hostname[MAXHOSTNAMELEN]; +int orig_umask, foreground, debug_flags; +pid_t mypid; +serv_state amd_state; + +/* statics */ +static char *localhost="localhost"; +static char newdir[MAXPATHLEN]; +static char transform[MAXPATHLEN]; + +static int +find_mt(amq_mount_tree *mt, char *dir) +{ + while (mt) { + if (STREQ(mt->mt_type, "link") || STREQ(mt->mt_type, "nfs")) { + int len = strlen(mt->mt_mountpoint); + if (NSTREQ(mt->mt_mountpoint, dir, len) && + ((dir[len] == '\0') || (dir[len] == '/'))) { + char tmp_buf[MAXPATHLEN]; + strcpy(tmp_buf, mt->mt_directory); + strcat(tmp_buf, &dir[len]); + strcpy(newdir, tmp_buf); + return 1; + } + } + if (find_mt(mt->mt_next,dir)) + return 1; + mt = mt->mt_child; + } + return 0; +} + + +static int +find_mlp(amq_mount_tree_list *mlp, char *dir) +{ + int i; + + for (i = 0; i < mlp->amq_mount_tree_list_len; i++) { + if (find_mt(mlp->amq_mount_tree_list_val[i], dir)) + return 1; + } + return 0; +} + + +#ifdef HAVE_CNODEID +static char * +cluster_server(void) +{ +# ifdef HAVE_EXTERN_GETCCENT + struct cct_entry *cp; +# endif /* HAVE_EXTERN_GETCCENT */ + + if (cnodeid() == 0) + return localhost; + +# ifdef HAVE_EXTERN_GETCCENT + while ((cp = getccent())) + if (cp->cnode_type == 'r') + return cp->cnode_name; +# endif /* HAVE_EXTERN_GETCCENT */ + + return localhost; +} +#endif /* HAVE_CNODEID */ + + +/* DISK_HOME_HACK added by gdmr */ +#ifdef DISK_HOME_HACK +static char * +hack_name(char *dir) +{ + char partition[MAXPATHLEN]; + char username[MAXPATHLEN]; + char hesiod_lookup[MAXPATHLEN]; + char *to, *ch, *hes_name, *dot; + char **hes; + +#ifdef DEBUG + fprintf(stderr, "hack_name(%s)\n", dir); +#endif /* DEBUG */ + + if (dir[0] == '/' && dir[1] == 'a' && dir[2] == '/') { + /* Could be /a/server/disk/home/partition/user... */ + ch = dir + 3; + while (*ch && *ch != '/') ch++; /* Skip server */ + if (!NSTREQ(ch, "/disk/home/", 11)) + return NULL; /* Nope */ + /* Looking promising, next should be the partition name */ + ch += 11; + to = partition; + while (*ch && *ch != '/') *to++ = *ch++; + to = '\0'; + if (!(*ch)) + return NULL; /* Off the end */ + /* Now the username */ + ch++; + to = username; + while (*ch && *ch != '/') *to++ = *ch++; + to = '\0'; +#ifdef DEBUG + fprintf(stderr, "partition %s, username %s\n", partition, username); +#endif /* DEBUG */ + + sprintf(hesiod_lookup, "%s.homes-remote", username); + hes = hes_resolve(hesiod_lookup, "amd"); + if (!hes) + return NULL; +#ifdef DEBUG + fprintf(stderr, "hesiod -> <%s>\n", *hes); +#endif /* DEBUG */ + hes_name = strstr(*hes, "/homes/remote/"); + if (!hes_name) return NULL; + hes_name += 14; +#ifdef DEBUG + fprintf(stderr, "hesiod -> <%s>\n", hes_name); +#endif /* DEBUG */ + dot = hes_name; + while (*dot && *dot != '.') dot++; + *dot = '\0'; +#ifdef DEBUG + fprintf(stderr, "hesiod -> <%s>\n", hes_name); +#endif /* DEBUG */ + + if (strcmp(partition, hes_name)) return NULL; +#ifdef DEBUG + fprintf(stderr, "A match, munging....\n"); +#endif /* DEBUG */ + strcpy(transform, "/home/"); + strcat(transform, username); + if (*ch) strcat(transform, ch); +#ifdef DEBUG + fprintf(stderr, "Munged to <%s>\n", transform); +#endif /* DEBUG */ + return transform; + } + return NULL; +} +#endif /* DISK_HOME_HACK */ + + +/* + * The routine transform_dir(path) transforms pathnames of directories + * mounted with the amd automounter to produce a more "natural" version. + * The automount table is obtained from the local amd via the rpc interface + * and reverse lookups are repeatedly performed on the directory name + * substituting the name of the automount link for the value of the link + * whenever it occurs as a prefix of the directory name. + */ +static char * +transform_dir(char *dir) +{ +#ifdef DISK_HOME_HACK + char *ch; +#endif /* DISK_HOME_HACK */ + char *server; + struct sockaddr_in server_addr; + int s = RPC_ANYSOCK; + CLIENT *clnt; + struct hostent *hp; + amq_mount_tree_list *mlp; + struct timeval tmo = {10, 0}; + +#ifdef DISK_HOME_HACK + if (ch = hack_name(dir)) + return ch; +#endif /* DISK_HOME_HACK */ + +#ifdef HAVE_CNODEID + server = cluster_server(); +#else /* not HAVE_CNODEID */ + server = localhost; +#endif /* not HAVE_CNODEID */ + + if ((hp = gethostbyname(server)) == 0) + return dir; + memset(&server_addr, 0, sizeof(server_addr)); + server_addr.sin_family = AF_INET; + server_addr.sin_addr = *(struct in_addr *) hp->h_addr; + + clnt = clntudp_create(&server_addr, AMQ_PROGRAM, AMQ_VERSION, tmo, &s); + if (clnt == 0) + return dir; + + strcpy(transform,dir); + while ( (mlp = amqproc_export_1((voidp)0, clnt)) && + find_mlp(mlp,transform) ) { + strcpy(transform,newdir); + } + return transform; +} + + +/* getawd() is a substitute for getwd() which transforms the path */ +static char * +getawd(char *path) +{ +#ifdef HAVE_GETCWD + char *wd = getcwd(path, MAXPATHLEN+1); +#else /* not HAVE_GETCWD */ + char *wd = getwd(path); +#endif /* not HAVE_GETCWD */ + + if (wd == NULL) { + return NULL; + } + strcpy(path, transform_dir(wd)); + return path; +} + + +int +main(int argc, char *argv[]) +{ + char tmp_buf[MAXPATHLEN], *wd; + + if (argc == 1) { + wd = getawd(tmp_buf); + if (wd == NULL) { + fprintf(stderr, "pawd: %s\n", tmp_buf); + exit(1); + } else { + fprintf(stdout, "%s\n", wd); + } + } else { + while (--argc) { + wd = transform_dir(*++argv); + fprintf(stdout, "%s\n", wd); + } + } + exit(0); +} + |
