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Diffstat (limited to 'Src/hashnameddir.c')
| -rw-r--r-- | Src/hashnameddir.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/Src/hashnameddir.c b/Src/hashnameddir.c new file mode 100644 index 000000000..bed43d025 --- /dev/null +++ b/Src/hashnameddir.c @@ -0,0 +1,307 @@ +/* + * hashtable.c - hash tables + * + * This file is part of zsh, the Z shell. + * + * Copyright (c) 1992-1997 Paul Falstad + * All rights reserved. + * + * Permission is hereby granted, without written agreement and without + * license or royalty fees, to use, copy, modify, and distribute this + * software and to distribute modified versions of this software for any + * purpose, provided that the above copyright notice and the following + * two paragraphs appear in all copies of this software. + * + * In no event shall Paul Falstad or the Zsh Development Group be liable + * to any party for direct, indirect, special, incidental, or consequential + * damages arising out of the use of this software and its documentation, + * even if Paul Falstad and the Zsh Development Group have been advised of + * the possibility of such damage. + * + * Paul Falstad and the Zsh Development Group specifically disclaim any + * warranties, including, but not limited to, the implied warranties of + * merchantability and fitness for a particular purpose. The software + * provided hereunder is on an "as is" basis, and Paul Falstad and the + * Zsh Development Group have no obligation to provide maintenance, + * support, updates, enhancements, or modifications. + * + */ + +#include "../config.h" + +/* + * On Solaris 8 there's a clash between "bool" in curses and RPC. + * We don't need curses here, so ensure it doesn't get included. + */ +#define ZSH_NO_TERM_HANDLING + +#include "zsh.mdh" +#include "hashnameddir.pro" + +/****************************************/ +/* Named Directory Hash Table Functions */ +/****************************************/ + +#ifdef HAVE_NIS_PLUS +# include <rpcsvc/nis.h> +#else +# ifdef HAVE_NIS +# include <rpc/types.h> +# include <rpc/rpc.h> +# include <rpcsvc/ypclnt.h> +# include <rpcsvc/yp_prot.h> +# endif +#endif + +/* hash table containing named directories */ + +/**/ +mod_export HashTable nameddirtab; + +/* != 0 if all the usernames have already been * + * added to the named directory hash table. */ + +static int allusersadded; + +/* Create new hash table for named directories */ + +/**/ +void +createnameddirtable(void) +{ + nameddirtab = newhashtable(201, "nameddirtab", NULL); + + nameddirtab->hash = hasher; + nameddirtab->emptytable = emptynameddirtable; + nameddirtab->filltable = fillnameddirtable; + nameddirtab->cmpnodes = strcmp; + nameddirtab->addnode = addnameddirnode; + nameddirtab->getnode = gethashnode; + nameddirtab->getnode2 = gethashnode2; + nameddirtab->removenode = removenameddirnode; + nameddirtab->disablenode = NULL; + nameddirtab->enablenode = NULL; + nameddirtab->freenode = freenameddirnode; + nameddirtab->printnode = printnameddirnode; + + allusersadded = 0; + finddir(NULL); /* clear the finddir cache */ +} + +/* Empty the named directories table */ + +/**/ +static void +emptynameddirtable(HashTable ht) +{ + emptyhashtable(ht); + allusersadded = 0; + finddir(NULL); /* clear the finddir cache */ +} + +/* Add all the usernames in the password file/database * + * to the named directories table. */ + +#ifdef HAVE_NIS_PLUS +static int +add_userdir(nis_name table, nis_object *object, void *userdata) +{ + if (object->zo_data.objdata_u.en_data.en_cols.en_cols_len >= 6) { + static char name[40], dir[PATH_MAX + 1]; + register entry_col *ec = + object->zo_data.objdata_u.en_data.en_cols.en_cols_val; + register int nl = minimum(ec[0].ec_value.ec_value_len, 39); + register int dl = minimum(ec[5].ec_value.ec_value_len, PATH_MAX); + + memcpy(name, ec[0].ec_value.ec_value_val, nl); + name[nl] = '\0'; + memcpy(dir, ec[5].ec_value.ec_value_val, dl); + dir[dl] = '\0'; + + adduserdir(name, dir, ND_USERNAME, 1); + } + return 0; +} +#else +# ifdef HAVE_NIS +static int +add_userdir(int status, char *key, int keylen, char *val, int vallen, char *dummy) +{ + char *p, *d, *de; + + if (status != YP_TRUE) + return 1; + + if (vallen > keylen && *(p = val + keylen) == ':') { + *p++ = '\0'; + for (de = val + vallen - 1; *de != ':' && de > val; de--); + if (de > val) { + *de = '\0'; + if ((d = strrchr(p, ':'))) { + if (*++d && val[0]) + adduserdir(val, d, ND_USERNAME, 1); + } + } + } + return 0; +} +# endif /* HAVE_NIS */ +#endif /* HAVE_NIS_PLUS */ + +/**/ +static void +fillnameddirtable(UNUSED(HashTable ht)) +{ + if (!allusersadded) { +#if defined(HAVE_NIS) || defined(HAVE_NIS_PLUS) + FILE *pwf; + char buf[BUFSIZ], *p, *d, *de; + int skipping, oldct = nameddirtab->ct, usepwf = 1; + +# ifndef HAVE_NIS_PLUS + char domain[YPMAXDOMAIN]; + struct ypall_callback cb; + + /* Get potential matches from NIS and cull those without local accounts */ + if (getdomainname(domain, YPMAXDOMAIN) == 0) { + cb.foreach = (int (*)()) add_userdir; + cb.data = NULL; + yp_all(domain, PASSWD_MAP, &cb); + } +# else /* HAVE_NIS_PLUS */ + /* Maybe we should turn this string into a #define'd constant...? */ + + nis_list("passwd.org_dir", EXPAND_NAME|ALL_RESULTS|FOLLOW_LINKS|FOLLOW_PATH, + add_userdir, 0); +# endif + if (nameddirtab->ct == oldct) { + /* Using NIS or NIS+ didn't add any user directories. This seems + * fishy, so we fall back to using getpwent(). If we don't have + * that, we only use the passwd file. */ +#ifdef HAVE_GETPWENT + struct passwd *pw; + + setpwent(); + + /* loop through the password file/database * + * and add all entries returned. */ + while ((pw = getpwent()) && !errflag) + adduserdir(pw->pw_name, pw->pw_dir, ND_USERNAME, 1); + + endpwent(); + usepwf = 0; +#endif /* HAVE_GETPWENT */ + } + if (usepwf) { + /* Don't forget the non-NIS matches from the flat passwd file */ + if ((pwf = fopen(PASSWD_FILE, "r")) != NULL) { + skipping = 0; + while (fgets(buf, BUFSIZ, pwf) != NULL) { + if (strchr(buf, '\n') != NULL) { + if (!skipping) { + if ((p = strchr(buf, ':')) != NULL) { + *p++ = '\0'; + if ((de = strrchr(p, ':'))) { + *de = '\0'; + if ((d = strrchr(p, ':'))) { + if (*++d && buf[0]) + adduserdir(buf, d, ND_USERNAME, 1); + } + } + } + } else + skipping = 0; + } else + skipping = 1; + } + fclose(pwf); + } + } +#else /* no NIS or NIS_PLUS */ +#ifdef USE_GETPWENT + struct passwd *pw; + + setpwent(); + + /* loop through the password file/database * + * and add all entries returned. */ + while ((pw = getpwent()) && !errflag) + adduserdir(pw->pw_name, pw->pw_dir, ND_USERNAME, 1); + + endpwent(); +#endif /* HAVE_GETPWENT */ +#endif + allusersadded = 1; + } +} + +/* Add an entry to the named directory hash * + * table, clearing the finddir() cache and * + * initialising the `diff' member. */ + +/**/ +static void +addnameddirnode(HashTable ht, char *nam, void *nodeptr) +{ + Nameddir nd = (Nameddir) nodeptr; + + nd->diff = strlen(nd->dir) - strlen(nam); + finddir(NULL); /* clear the finddir cache */ + addhashnode(ht, nam, nodeptr); +} + +/* Remove an entry from the named directory * + * hash table, clearing the finddir() cache. */ + +/**/ +static HashNode +removenameddirnode(HashTable ht, const char *nam) +{ + HashNode hn = removehashnode(ht, nam); + + if(hn) + finddir(NULL); /* clear the finddir cache */ + return hn; +} + +/* Free up the memory used by a named directory hash node. */ + +/**/ +static void +freenameddirnode(HashNode hn) +{ + Nameddir nd = (Nameddir) hn; + + zsfree(nd->node.nam); + zsfree(nd->dir); + zfree(nd, sizeof(struct nameddir)); +} + +/* Print a named directory */ + +/**/ +static void +printnameddirnode(HashNode hn, int printflags) +{ + Nameddir nd = (Nameddir) hn; + + if (printflags & PRINT_NAMEONLY) { + zputs(nd->node.nam, stdout); + putchar('\n'); + return; + } + + if (printflags & PRINT_LIST) { + printf("hash -d "); + + if(nd->node.nam[0] == '-') + printf("-- "); + } + + quotedzputs(nd->node.nam, stdout); + putchar('='); + quotedzputs(nd->dir, stdout); + putchar('\n'); +} + +#include "../config.h" |