diff options
Diffstat (limited to 'nis/nss_compat/compat-spwd.c')
| -rw-r--r-- | nis/nss_compat/compat-spwd.c | 713 |
1 files changed, 174 insertions, 539 deletions
diff --git a/nis/nss_compat/compat-spwd.c b/nis/nss_compat/compat-spwd.c index 8ce02e3da3..a2757c4b66 100644 --- a/nis/nss_compat/compat-spwd.c +++ b/nis/nss_compat/compat-spwd.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1996,1997,1998,1999,2001,2002 Free Software Foundation, Inc. +/* Copyright (C) 1996,1997,1998,1999,2001,2002,2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996. @@ -25,19 +25,20 @@ #include <shadow.h> #include <string.h> #include <bits/libc-lock.h> -#include <rpcsvc/yp.h> +#include <rpc/types.h> #include <rpcsvc/ypclnt.h> -#include <rpcsvc/nis.h> #include <nsswitch.h> #include "netgroup.h" -#include "nss-nisplus.h" -#include "nisplus-parser.h" static service_user *ni; -static bool_t use_nisplus; /* default: passwd_compat: nis */ -static nis_name pwdtable; /* Name of the password table */ -static size_t pwdtablelen; +static enum nss_status (*nss_setspent) (int stayopen); +static enum nss_status (*nss_getspnam_r) (const char *name, struct spwd * sp, + char *buffer, size_t buflen, + int *errnop); +static enum nss_status (*nss_getspent_r) (struct spwd * sp, char *buffer, + size_t buflen, int *errnop); +static enum nss_status (*nss_endspent) (void); /* Get the declaration of the parser function. */ #define ENTNAME spent @@ -49,28 +50,25 @@ static size_t pwdtablelen; #define BLACKLIST_INITIAL_SIZE 512 #define BLACKLIST_INCREMENT 256 struct blacklist_t - { - char *data; - int current; - int size; - }; +{ + char *data; + int current; + int size; +}; struct ent_t - { - bool_t netgroup; - bool_t nis; - bool_t first; - char *oldkey; - int oldkeylen; - nis_result *result; - FILE *stream; - struct blacklist_t blacklist; - struct spwd pwd; - struct __netgrent netgrdata; - }; +{ + bool_t netgroup; + bool_t files; + bool_t first; + FILE *stream; + struct blacklist_t blacklist; + struct spwd pwd; + struct __netgrent netgrdata; +}; typedef struct ent_t ent_t; -static ent_t ext_ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0}, +static ent_t ext_ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, {NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; /* Protect global state against multiple changers. */ @@ -80,6 +78,21 @@ __libc_lock_define_initialized (static, lock) static void blacklist_store_name (const char *, ent_t *); static int in_blacklist (const char *, int, ent_t *); +/* Initialize the NSS interface/functions. The calling function must + hold the lock. */ +static void +init_nss_interface (void) +{ + if (__nss_database_lookup ("shadow_compat", "passwd_compat", + "nis", &ni) >= 0) + { + nss_setspent = __nss_lookup_function (ni, "setspent"); + nss_getspnam_r = __nss_lookup_function (ni, "getspnam_r"); + nss_getspent_r = __nss_lookup_function (ni, "getspent_r"); + nss_endspent = __nss_lookup_function (ni, "endspent"); + } +} + static void give_spwd_free (struct spwd *pwd) { @@ -142,45 +155,17 @@ copy_spwd_changes (struct spwd *dest, struct spwd *src, } static enum nss_status -internal_setspent (ent_t *ent) +internal_setspent (ent_t *ent, int stayopen) { enum nss_status status = NSS_STATUS_SUCCESS; - ent->nis = ent->first = ent->netgroup = 0; + ent->first = ent->netgroup = 0; + ent->files = TRUE; /* If something was left over free it. */ if (ent->netgroup) __internal_endnetgrent (&ent->netgrdata); - if (ent->oldkey != NULL) - { - free (ent->oldkey); - ent->oldkey = NULL; - ent->oldkeylen = 0; - } - - if (ent->result != NULL) - { - nis_freeresult (ent->result); - ent->result = NULL; - } - - if (pwdtable == NULL) - { - static const char key[] = "passwd.org_dir."; - const char *local_dir = nis_local_directory (); - size_t len_local_dir = strlen (local_dir); - - pwdtable = malloc (sizeof (key) + len_local_dir); - if (pwdtable == NULL) - return NSS_STATUS_TRYAGAIN; - - pwdtablelen = ((char *) mempcpy (mempcpy (pwdtable, - key, sizeof (key) - 1), - local_dir, len_local_dir + 1) - - pwdtable) - 1; - } - if (ent->blacklist.data != NULL) { ent->blacklist.current = 1; @@ -210,7 +195,7 @@ internal_setspent (ent_t *ent) if (result < 0) { /* Something went wrong. Close the stream and return a - failure. */ + failure. */ fclose (ent->stream); ent->stream = NULL; status = NSS_STATUS_UNAVAIL; @@ -222,6 +207,9 @@ internal_setspent (ent_t *ent) give_spwd_free (&ent->pwd); + if (status == NSS_STATUS_SUCCESS && nss_setspent) + return nss_setspent (stayopen); + return status; } @@ -234,12 +222,9 @@ _nss_compat_setspent (int stayopen) __libc_lock_lock (lock); if (ni == NULL) - { - __nss_database_lookup ("shadow_compat", "passwd_compat", "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); - result = internal_setspent (&ext_ent); + result = internal_setspent (&ext_ent, stayopen); __libc_lock_unlock (lock); @@ -250,6 +235,9 @@ _nss_compat_setspent (int stayopen) static enum nss_status internal_endspent (ent_t *ent) { + if (nss_endspent) + nss_endspent (); + if (ent->stream != NULL) { fclose (ent->stream); @@ -259,20 +247,8 @@ internal_endspent (ent_t *ent) if (ent->netgroup) __internal_endnetgrent (&ent->netgrdata); - ent->nis = ent->first = ent->netgroup = 0; - - if (ent->oldkey != NULL) - { - free (ent->oldkey); - ent->oldkey = NULL; - ent->oldkeylen = 0; - } - - if (ent->result != NULL) - { - nis_freeresult (ent->result); - ent->result = NULL; - } + ent->first = ent->netgroup = FALSE; + ent->files = TRUE; if (ent->blacklist.data != NULL) { @@ -304,25 +280,27 @@ _nss_compat_endspent (void) static enum nss_status -getspent_next_nis_netgr (const char *name, struct spwd *result, ent_t *ent, - char *group, char *buffer, size_t buflen, int *errnop) +getspent_next_nss_netgr (const char *name, struct spwd *result, ent_t *ent, + char *group, char *buffer, size_t buflen, + int *errnop) { - struct parser_data *data = (void *) buffer; - char *ypdomain, *host, *user, *domain, *outval, *p, *p2; - int status, outvallen; + char *curdomain, *host, *user, *domain, *p2; size_t p2len; - if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS) + if (!nss_getspnam_r) + return NSS_STATUS_UNAVAIL; + + if (yp_get_default_domain (&curdomain) != YPERR_SUCCESS) { - ent->netgroup = 0; - ent->first = 0; + ent->netgroup = FALSE; + ent->first = FALSE; give_spwd_free (&ent->pwd); return NSS_STATUS_UNAVAIL; } if (ent->first == TRUE) { - bzero (&ent->netgrdata, sizeof (struct __netgrent)); + memset (&ent->netgrdata, 0, sizeof (struct __netgrent)); __internal_setnetgrent (group, &ent->netgrdata); ent->first = FALSE; } @@ -330,7 +308,7 @@ getspent_next_nis_netgr (const char *name, struct spwd *result, ent_t *ent, while (1) { char *saved_cursor; - int parse_res; + enum nss_status status; saved_cursor = ent->netgrdata.cursor; status = __internal_getnetgrent_r (&host, &user, &domain, @@ -339,7 +317,7 @@ getspent_next_nis_netgr (const char *name, struct spwd *result, ent_t *ent, if (status != 1) { __internal_endnetgrent (&ent->netgrdata); - ent->netgroup = 0; + ent->netgroup = FALSE; give_spwd_free (&ent->pwd); return NSS_STATUS_RETURN; } @@ -347,7 +325,7 @@ getspent_next_nis_netgr (const char *name, struct spwd *result, ent_t *ent, if (user == NULL || user[0] == '-') continue; - if (domain != NULL && strcmp (ypdomain, domain) != 0) + if (domain != NULL && strcmp (curdomain, domain) != 0) continue; /* If name != NULL, we are called from getpwnam */ @@ -355,240 +333,43 @@ getspent_next_nis_netgr (const char *name, struct spwd *result, ent_t *ent, if (strcmp (user, name) != 0) continue; - if (yp_match (ypdomain, "shadow.byname", user, - strlen (user), &outval, &outvallen) - != YPERR_SUCCESS) - continue; - p2len = spwd_need_buflen (&ent->pwd); if (p2len > buflen) { - free (outval); *errnop = ERANGE; return NSS_STATUS_TRYAGAIN; } p2 = buffer + (buflen - p2len); buflen -= p2len; - if (buflen < ((size_t) outval + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - p = strncpy (buffer, outval, buflen); - while (isspace (*p)) - p++; - free (outval); - parse_res = _nss_files_parse_spent (p, result, data, buflen, errnop); - if (parse_res == -1) - { - ent->netgrdata.cursor = saved_cursor; - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - if (parse_res) - { - /* Store the User in the blacklist for the "+" at the end of - /etc/passwd */ - blacklist_store_name (result->sp_namp, ent); - copy_spwd_changes (result, &ent->pwd, p2, p2len); - break; - } - } - - return NSS_STATUS_SUCCESS; -} - -static enum nss_status -getspent_next_nisplus_netgr (const char *name, struct spwd *result, - ent_t *ent, char *group, char *buffer, - size_t buflen, int *errnop) -{ - char *ypdomain, *host, *user, *domain, *p2; - int status, parse_res; - size_t p2len; - nis_result *nisres; - - /* Maybe we should use domainname here ? We need the current - domainname for the domain field in netgroups */ - if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS) - { - ent->netgroup = 0; - ent->first = 0; - give_spwd_free (&ent->pwd); - return NSS_STATUS_UNAVAIL; - } - - if (ent->first == TRUE) - { - bzero (&ent->netgrdata, sizeof (struct __netgrent)); - __internal_setnetgrent (group, &ent->netgrdata); - ent->first = FALSE; - } - - while (1) - { - char *saved_cursor; - - saved_cursor = ent->netgrdata.cursor; - status = __internal_getnetgrent_r (&host, &user, &domain, - &ent->netgrdata, buffer, buflen, - errnop); - if (status != 1) - { - __internal_endnetgrent (&ent->netgrdata); - ent->netgroup = 0; - give_spwd_free (&ent->pwd); - return NSS_STATUS_RETURN; - } - if (user == NULL || user[0] == '-') - continue; - - if (domain != NULL && strcmp (ypdomain, domain) != 0) - continue; - - /* If name != NULL, we are called from getpwnam */ - if (name != NULL) - if (strcmp (user, name) != 0) - continue; + if (nss_getspnam_r (user, result, buffer, buflen, errnop) != + NSS_STATUS_SUCCESS) + continue; - p2len = spwd_need_buflen (&ent->pwd); - if (p2len > buflen) - { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - p2 = buffer + (buflen - p2len); - buflen -= p2len; - { - char buf[strlen (user) + 30 + pwdtablelen]; - sprintf (buf, "[name=%s],%s", user, pwdtable); - nisres = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL); - } - if (niserr2nss (nisres->status) != NSS_STATUS_SUCCESS) - { - nis_freeresult (nisres); - continue; - } - parse_res = _nss_nisplus_parse_spent (nisres, result, buffer, - buflen, errnop); - if (parse_res == -1) + if (!in_blacklist (result->sp_namp, strlen (result->sp_namp), ent)) { - nis_freeresult (nisres); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - nis_freeresult (nisres); - - if (parse_res) - { - /* Store the User in the blacklist for the "+" at the end of - /etc/passwd */ + /* Store the User in the blacklist for possible the "+" at the + end of /etc/passwd */ blacklist_store_name (result->sp_namp, ent); copy_spwd_changes (result, &ent->pwd, p2, p2len); - break; - } - } - - return NSS_STATUS_SUCCESS; -} - -static enum nss_status -getspent_next_nisplus (struct spwd *result, ent_t *ent, char *buffer, - size_t buflen, int *errnop) -{ - int parse_res; - size_t p2len; - char *p2; - - p2len = spwd_need_buflen (&ent->pwd); - if (p2len > buflen) - { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - p2 = buffer + (buflen - p2len); - buflen -= p2len; - do - { - bool_t saved_first; - nis_result *saved_res; - - if (ent->first) - { - saved_first = TRUE; - saved_res = ent->result; - - ent->result = nis_first_entry (pwdtable); - if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS) - { - ent->nis = 0; - give_spwd_free (&ent->pwd); - return niserr2nss (ent->result->status); - } - ent->first = FALSE; - } - else - { - nis_result *res; - - saved_first = FALSE; - saved_res = ent->result; - - res = nis_next_entry (pwdtable, &ent->result->cookie); - ent->result = res; - if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS) - { - nis_freeresult (saved_res); - ent->nis = 0; - give_spwd_free (&ent->pwd); - return niserr2nss (ent->result->status); - } - } - parse_res = _nss_nisplus_parse_spent (ent->result, result, buffer, - buflen, errnop); - if (parse_res == -1) - { - ent->first = saved_first; - nis_freeresult (ent->result); - ent->result = saved_res; - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - else - { - if (!saved_first) - nis_freeresult (saved_res); + break; } - if (parse_res && - in_blacklist (result->sp_namp, strlen (result->sp_namp), ent)) - parse_res = 0; /* if result->pw_name in blacklist,search next entry */ } - while (!parse_res); - - copy_spwd_changes (result, &ent->pwd, p2, p2len); return NSS_STATUS_SUCCESS; } static enum nss_status -getspent_next_nis (struct spwd *result, ent_t *ent, +getspent_next_nss (struct spwd *result, ent_t *ent, char *buffer, size_t buflen, int *errnop) { - struct parser_data *data = (void *) buffer; - char *domain, *outkey, *outval, *p, *p2; - int outkeylen, outvallen, parse_res; + enum nss_status status; + char *p2; size_t p2len; - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - { - ent->nis = 0; - give_spwd_free (&ent->pwd); - return NSS_STATUS_UNAVAIL; - } + if (!nss_getspent_r) + return NSS_STATUS_UNAVAIL; p2len = spwd_need_buflen (&ent->pwd); if (p2len > buflen) @@ -600,87 +381,11 @@ getspent_next_nis (struct spwd *result, ent_t *ent, buflen -= p2len; do { - bool_t saved_first; - char *saved_oldkey; - int saved_oldlen; - - if (ent->first) - { - if (yp_first (domain, "shadow.byname", &outkey, &outkeylen, - &outval, &outvallen) != YPERR_SUCCESS) - { - ent->nis = 0; - give_spwd_free (&ent->pwd); - return NSS_STATUS_UNAVAIL; - } - - if (buflen < ((size_t) outvallen + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - saved_first = TRUE; - saved_oldkey = ent->oldkey; - saved_oldlen = ent->oldkeylen; - ent->oldkey = outkey; - ent->oldkeylen = outkeylen; - ent->first = FALSE; - } - else - { - if (yp_next (domain, "shadow.byname", ent->oldkey, ent->oldkeylen, - &outkey, &outkeylen, &outval, &outvallen) - != YPERR_SUCCESS) - { - ent->nis = 0; - give_spwd_free (&ent->pwd); - return NSS_STATUS_NOTFOUND; - } - - if (buflen < ((size_t) outvallen + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - saved_first = FALSE; - saved_oldkey = ent->oldkey; - saved_oldlen = ent->oldkeylen; - ent->oldkey = outkey; - ent->oldkeylen = outkeylen; - } - - /* Copy the found data to our buffer */ - p = strncpy (buffer, outval, buflen); - - /* ...and free the data. */ - free (outval); - - while (isspace (*p)) - ++p; - parse_res = _nss_files_parse_spent (p, result, data, buflen, errnop); - if (parse_res == -1) - { - free (ent->oldkey); - ent->oldkey = saved_oldkey; - ent->oldkeylen = saved_oldlen; - ent->first = saved_first; - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - else - { - if (!saved_first) - free (saved_oldkey); - } - if (parse_res && - in_blacklist (result->sp_namp, strlen (result->sp_namp), ent)) - parse_res = 0; + if ((status = nss_getspent_r (result, buffer, buflen, errnop)) != + NSS_STATUS_SUCCESS) + return status; } - while (!parse_res); + while (in_blacklist (result->sp_namp, strlen (result->sp_namp), ent)); copy_spwd_changes (result, &ent->pwd, p2, p2len); @@ -689,15 +394,16 @@ getspent_next_nis (struct spwd *result, ent_t *ent, /* This function handle the +user entrys in /etc/shadow */ static enum nss_status -getspnam_plususer (const char *name, struct spwd *result, char *buffer, - size_t buflen, int *errnop) +getspnam_plususer (const char *name, struct spwd *result, ent_t *ent, + char *buffer, size_t buflen, int *errnop) { - struct parser_data *data = (void *) buffer; struct spwd pwd; - int parse_res; char *p; size_t plen; + if (!nss_getspnam_r) + return NSS_STATUS_UNAVAIL; + memset (&pwd, '\0', sizeof (struct spwd)); pwd.sp_warn = -1; pwd.sp_inact = -1; @@ -715,71 +421,16 @@ getspnam_plususer (const char *name, struct spwd *result, char *buffer, p = buffer + (buflen - plen); buflen -= plen; - if (use_nisplus) /* Do the NIS+ query here */ - { - nis_result *res; - char buf[strlen (name) + 24 + pwdtablelen]; - - sprintf(buf, "[name=%s],%s", name, pwdtable); - res = nis_list(buf, 0, NULL, NULL); - if (niserr2nss (res->status) != NSS_STATUS_SUCCESS) - { - enum nss_status status = niserr2nss (res->status); - - nis_freeresult (res); - return status; - } - parse_res = _nss_nisplus_parse_spent (res, result, buffer, - buflen, errnop); - if (parse_res == -1) - { - nis_freeresult (res); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - nis_freeresult (res); - } - else /* Use NIS */ - { - char *domain, *outval, *ptr; - int outvallen; - - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - if (yp_match (domain, "shadow.byname", name, strlen (name), - &outval, &outvallen) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - if (buflen < ((size_t) outvallen + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } + if (nss_getspnam_r (name, result, buffer, buflen, errnop) != + NSS_STATUS_SUCCESS) + return NSS_STATUS_NOTFOUND; - ptr = strncpy (buffer, outval, buflen); - free (outval); - while (isspace (*ptr)) - ptr++; - parse_res = _nss_files_parse_spent (ptr, result, data, buflen, errnop); - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; - } + if (in_blacklist (result->sp_namp, strlen (result->sp_namp), ent)) + return NSS_STATUS_NOTFOUND; - if (parse_res) - { - copy_spwd_changes (result, &pwd, p, plen); - give_spwd_free (&pwd); - /* We found the entry. */ - return NSS_STATUS_SUCCESS; - } - else - { - /* Give buffer the old len back */ - buflen += plen; - give_spwd_free (&pwd); - } + copy_spwd_changes (result, &pwd, p, plen); + give_spwd_free (&pwd); + /* We found the entry. */ return NSS_STATUS_RETURN; } @@ -814,18 +465,18 @@ getspent_next_file (struct spwd *result, ent_t *ent, ++p; } while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */ - /* Parse the line. If it is invalid, loop to - get the next line of the file to parse. */ + /* Parse the line. If it is invalid, loop to + get the next line of the file to parse. */ || !(parse_res = _nss_files_parse_spent (p, result, data, buflen, errnop))); if (parse_res == -1) - { - /* The parser ran out of space. */ - fsetpos (ent->stream, &pos); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } + { + /* The parser ran out of space. */ + fsetpos (ent->stream, &pos); + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } if (result->sp_namp[0] != '+' && result->sp_namp[0] != '-') /* This is a real entry. */ @@ -836,12 +487,12 @@ getspent_next_file (struct spwd *result, ent_t *ent, && result->sp_namp[2] != '\0') { /* XXX Do not use fixed length buffers. */ - char buf2[1024]; + char buf2[1024]; char *user, *host, *domain; - struct __netgrent netgrdata; + struct __netgrent netgrdata; - bzero (&netgrdata, sizeof (struct __netgrent)); - __internal_setnetgrent (&result->sp_namp[2], &netgrdata); + bzero (&netgrdata, sizeof (struct __netgrent)); + __internal_setnetgrent (&result->sp_namp[2], &netgrdata); while (__internal_getnetgrent_r (&host, &user, &domain, &netgrdata, buf2, sizeof (buf2), errnop)) @@ -863,14 +514,9 @@ getspent_next_file (struct spwd *result, ent_t *ent, ent->first = TRUE; copy_spwd_changes (&ent->pwd, result, NULL, 0); - if (use_nisplus) - status = getspent_next_nisplus_netgr (NULL, result, ent, - &result->sp_namp[2], - buffer, buflen, errnop); - else - status = getspent_next_nis_netgr (NULL, result, ent, - &result->sp_namp[2], - buffer, buflen, errnop); + status = getspent_next_nss_netgr (NULL, result, ent, + &result->sp_namp[2], + buffer, buflen, errnop); if (status == NSS_STATUS_RETURN) continue; else @@ -889,41 +535,38 @@ getspent_next_file (struct spwd *result, ent_t *ent, if (result->sp_namp[0] == '+' && result->sp_namp[1] != '\0' && result->sp_namp[1] != '@') { - enum nss_status status; + enum nss_status status; /* Store the User in the blacklist for the "+" at the end of /etc/passwd */ blacklist_store_name (&result->sp_namp[1], ent); - status = getspnam_plususer (&result->sp_namp[1], result, buffer, - buflen, errnop); - if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ - break; - else - if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */ - || status == NSS_STATUS_NOTFOUND) /* entry doesn't exist */ - continue; - else - { - if (status == NSS_STATUS_TRYAGAIN) - { - fsetpos (ent->stream, &pos); - *errnop = ERANGE; - } - return status; - } + status = getspnam_plususer (&result->sp_namp[1], result, ent, + buffer, buflen, errnop); + + if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ + break; + else if (status == NSS_STATUS_RETURN /* We couldn't parse the entry */ + || status == NSS_STATUS_NOTFOUND) /* entry doesn't exist */ + continue; + else + { + if (status == NSS_STATUS_TRYAGAIN) + { + fsetpos (ent->stream, &pos); + *errnop = ERANGE; + } + return status; + } } /* +:... */ if (result->sp_namp[0] == '+' && result->sp_namp[1] == '\0') { - ent->nis = TRUE; + ent->files = FALSE; ent->first = TRUE; copy_spwd_changes (&ent->pwd, result, NULL, 0); - if (use_nisplus) - return getspent_next_nisplus (result, ent, buffer, buflen, errnop); - else - return getspent_next_nis (result, ent, buffer, buflen, errnop); + return getspent_next_nss (result, ent, buffer, buflen, errnop); } } @@ -937,57 +580,45 @@ internal_getspent_r (struct spwd *pw, ent_t *ent, { if (ent->netgroup) { - int status; + enum nss_status status; /* We are searching members in a netgroup */ /* Since this is not the first call, we don't need the group name */ - if (use_nisplus) - status = getspent_next_nisplus_netgr (NULL, pw, ent, NULL, buffer, - buflen, errnop); - else - status = getspent_next_nis_netgr (NULL, pw, ent, NULL, buffer, buflen, - errnop); + status = getspent_next_nss_netgr (NULL, pw, ent, NULL, buffer, + buflen, errnop); + if (status == NSS_STATUS_RETURN) return getspent_next_file (pw, ent, buffer, buflen, errnop); else return status; } + else if (ent->files) + return getspent_next_file (pw, ent, buffer, buflen, errnop); else - if (ent->nis) - { - if (use_nisplus) - return getspent_next_nisplus (pw, ent, buffer, buflen, errnop); - else - return getspent_next_nis (pw, ent, buffer, buflen, errnop); - } - else - return getspent_next_file (pw, ent, buffer, buflen, errnop); + return getspent_next_nss (pw, ent, buffer, buflen, errnop); } enum nss_status _nss_compat_getspent_r (struct spwd *pwd, char *buffer, size_t buflen, int *errnop) { - enum nss_status status = NSS_STATUS_SUCCESS; + enum nss_status result = NSS_STATUS_SUCCESS; __libc_lock_lock (lock); + /* Be prepared that the setpwent function was not called before. */ if (ni == NULL) - { - __nss_database_lookup ("shadow_compat", "passwd_compat", "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); - /* Be prepared that the setspent function was not called before. */ if (ext_ent.stream == NULL) - status = internal_setspent (&ext_ent); + result = internal_setspent (&ext_ent, 1); - if (status == NSS_STATUS_SUCCESS) - status = internal_getspent_r (pwd, &ext_ent, buffer, buflen, errnop); + if (result == NSS_STATUS_SUCCESS) + result = internal_getspent_r (pwd, &ext_ent, buffer, buflen, errnop); __libc_lock_unlock (lock); - return status; + return result; } /* Searches in /etc/passwd and the NIS/NIS+ map for a special user */ @@ -1022,9 +653,9 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, while (isspace (*p)) ++p; } - while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */ + while (*p == '\0' || *p == '#' || /* Ignore empty and comment lines. */ /* Parse the line. If it is invalid, loop to - get the next line of the file to parse. */ + get the next line of the file to parse. */ !(parse_res = _nss_files_parse_spent (p, result, data, buflen, errnop))); @@ -1046,6 +677,8 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, } /* -@netgroup */ + /* If the loaded NSS module does not support this service, add + all users from a +@netgroup entry to the blacklist, too. */ if (result->sp_namp[0] == '-' && result->sp_namp[1] == '@' && result->sp_namp[2] != '\0') { @@ -1080,19 +713,16 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, do { - if (use_nisplus) - status = getspent_next_nisplus_netgr (name, result, ent, buf, - buffer, buflen, errnop); - else - status = getspent_next_nis_netgr (name, result, ent, buf, - buffer, buflen, errnop); + status = getspent_next_nss_netgr (name, result, ent, buf, + buffer, buflen, errnop); if (status == NSS_STATUS_RETURN) continue; if (status == NSS_STATUS_SUCCESS && strcmp (result->sp_namp, name) == 0) return NSS_STATUS_SUCCESS; - } while (status == NSS_STATUS_SUCCESS); + } + while (status == NSS_STATUS_SUCCESS); continue; } @@ -1114,8 +744,9 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, { enum nss_status status; - status = getspnam_plususer (name, result, buffer, buflen, - errnop); + status = getspnam_plususer (name, result, ent, + buffer, buflen, errnop); + if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ return NSS_STATUS_NOTFOUND; @@ -1129,8 +760,10 @@ internal_getspnam_r (const char *name, struct spwd *result, ent_t *ent, { enum nss_status status; - status = getspnam_plususer (name, result, buffer, buflen, errnop); - if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ + status = getspnam_plususer (name, result, ent, + buffer, buflen, errnop); + + if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ return NSS_STATUS_NOTFOUND; else return status; @@ -1143,28 +776,30 @@ enum nss_status _nss_compat_getspnam_r (const char *name, struct spwd *pwd, char *buffer, size_t buflen, int *errnop) { - ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0}, + enum nss_status result; + ent_t ent = {0, TRUE, 0, NULL, {NULL, 0, 0}, {NULL, NULL, 0, 0, 0, 0, 0, 0, 0}}; - enum nss_status status; if (name[0] == '-' || name[0] == '+') return NSS_STATUS_NOTFOUND; + __libc_lock_lock (lock); + if (ni == NULL) - { - __nss_database_lookup ("shadow_compat", "passwd_compat", "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); + + __libc_lock_unlock (lock); - status = internal_setspent (&ent); - if (status != NSS_STATUS_SUCCESS) - return status; + result = internal_setspent (&ent, 0); - status = internal_getspnam_r (name, pwd, &ent, buffer, buflen, errnop); + if (result != NSS_STATUS_SUCCESS) + return result; + + result = internal_getspnam_r (name, pwd, &ent, buffer, buflen, errnop); internal_endspent (&ent); - return status; + return result; } /* Support routines for remembering -@netgroup and -user entries. @@ -1225,7 +860,7 @@ in_blacklist (const char *name, int namelen, ent_t *ent) buf[0] = '|'; cp = stpcpy (&buf[1], name); - *cp++= '|'; + *cp++ = '|'; *cp = '\0'; return strstr (ent->blacklist.data, buf) != NULL; } |