diff options
Diffstat (limited to 'nis/nss_compat/compat-pwd.c')
| -rw-r--r-- | nis/nss_compat/compat-pwd.c | 1012 |
1 files changed, 241 insertions, 771 deletions
diff --git a/nis/nss_compat/compat-pwd.c b/nis/nss_compat/compat-pwd.c index 5c9a551d88..c47ad31e46 100644 --- a/nis/nss_compat/compat-pwd.c +++ b/nis/nss_compat/compat-pwd.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. @@ -24,20 +24,24 @@ #include <fcntl.h> #include <netdb.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 <bits/libc-lock.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 pwd table */ -static size_t pwdtablelen; +static enum nss_status (*nss_setpwent) (int stayopen); +static enum nss_status (*nss_getpwnam_r) (const char *name, + struct passwd * pwd, char *buffer, + size_t buflen, int *errnop); +static enum nss_status (*nss_getpwuid_r) (uid_t uid, struct passwd * pwd, + char *buffer, size_t buflen, + int *errnop); +static enum nss_status (*nss_getpwent_r) (struct passwd * pwd, char *buffer, + size_t buflen, int *errnop); +static enum nss_status (*nss_endpwent) (void); /* Get the declaration of the parser function. */ #define ENTNAME pwent @@ -49,29 +53,26 @@ 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 passwd pwd; - struct __netgrent netgrdata; - }; +{ + bool_t netgroup; + bool_t first; + bool_t files; + FILE *stream; + struct blacklist_t blacklist; + struct passwd 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}, - {NULL, NULL, 0, 0, NULL, NULL, NULL}}; +static ent_t ext_ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, + {NULL, NULL, 0, 0, NULL, NULL, NULL}}; /* Protect global state against multiple changers. */ __libc_lock_define_initialized (static, lock) @@ -80,6 +81,21 @@ __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 ("passwd_compat", NULL, "nis", &ni) >= 0) + { + nss_setpwent = __nss_lookup_function (ni, "setpwent"); + nss_getpwnam_r = __nss_lookup_function (ni, "getpwnam_r"); + nss_getpwuid_r = __nss_lookup_function (ni, "getpwuid_r"); + nss_getpwent_r = __nss_lookup_function (ni, "getpwent_r"); + nss_endpwent = __nss_lookup_function (ni, "endpwent"); + } +} + static void give_pwd_free (struct passwd *pwd) { @@ -156,8 +172,7 @@ copy_pwd_changes (struct passwd *dest, struct passwd *src, { if (buffer == NULL) dest->pw_dir = strdup (src->pw_dir); - else if (dest->pw_dir && - strlen (dest->pw_dir) >= strlen (src->pw_dir)) + else if (dest->pw_dir && strlen (dest->pw_dir) >= strlen (src->pw_dir)) strcpy (dest->pw_dir, src->pw_dir); else { @@ -186,100 +201,17 @@ copy_pwd_changes (struct passwd *dest, struct passwd *src, } static enum nss_status -insert_passwd_adjunct (char **result, int *len, char *domain, int *errnop) -{ - char *p1, *p2, *result2, *res; - int len2; - size_t namelen; - - /* Check for adjunct style secret passwords. They can be - recognized by a password starting with "##". */ - p1 = strchr (*result, ':'); - if (p1 == NULL || p1[1] != '#' || p1[2] != '#') - return NSS_STATUS_SUCCESS; - p2 = strchr (p1 + 3, ':'); - - namelen = p2 - p1 - 3; - - if (yp_match (domain, "passwd.adjunct.byname", &p1[3], namelen, - &result2, &len2) == YPERR_SUCCESS) - { - /* We found a passwd.adjunct entry. Merge encrypted - password therein into original result. */ - char *encrypted = strchr (result2, ':'); - char *endp; - size_t restlen; - - if (encrypted == NULL || (endp = strchr (++encrypted, ':')) == NULL) - { - /* Invalid format of the entry. This never should happen - unless the data from which the NIS table is generated is - wrong. We simply ignore it. */ - free (result2); - return NSS_STATUS_SUCCESS; - } - - restlen = *len - (p2 - *result); - if ((res = malloc (namelen + restlen + (endp - encrypted) + 2)) == NULL) - { - free (result2); - return NSS_STATUS_TRYAGAIN; - } - - __mempcpy (__mempcpy (__mempcpy (__mempcpy - (res, *result, (p1 - *result)), - ":", 1), - encrypted, endp - encrypted), - p2, restlen + 1); - - free (result2); - free (*result); - *result = res; - *len = strlen (res); - } - return NSS_STATUS_SUCCESS; -} - -static enum nss_status -internal_setpwent (ent_t *ent) +internal_setpwent (ent_t *ent, int stayopen) { enum nss_status status = NSS_STATUS_SUCCESS; - ent->nis = ent->first = ent->netgroup = 0; + ent->first = ent->netgroup = FALSE; + 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; @@ -309,7 +241,7 @@ internal_setpwent (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; @@ -321,6 +253,9 @@ internal_setpwent (ent_t *ent) give_pwd_free (&ent->pwd); + if (status == NSS_STATUS_SUCCESS && nss_setpwent) + return nss_setpwent (stayopen); + return status; } @@ -333,12 +268,9 @@ _nss_compat_setpwent (int stayopen) __libc_lock_lock (lock); if (ni == NULL) - { - __nss_database_lookup ("passwd_compat", NULL, "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); - result = internal_setpwent (&ext_ent); + result = internal_setpwent (&ext_ent, stayopen); __libc_lock_unlock (lock); @@ -349,6 +281,9 @@ _nss_compat_setpwent (int stayopen) static enum nss_status internal_endpwent (ent_t *ent) { + if (nss_endpwent) + nss_endpwent (); + if (ent->stream != NULL) { fclose (ent->stream); @@ -358,26 +293,13 @@ internal_endpwent (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; if (ent->blacklist.data != NULL) { ent->blacklist.current = 1; ent->blacklist.data[0] = '|'; - ent->blacklist.data[1] = '\0'; + ent->blacklist.data[1] = '\0'; } else ent->blacklist.current = 0; @@ -401,19 +323,25 @@ _nss_compat_endpwent (void) return result; } + static enum nss_status -getpwent_next_nis_netgr (const char *name, struct passwd *result, ent_t *ent, - char *group, char *buffer, size_t buflen, int *errnop) +getpwent_next_nss_netgr (const char *name, struct passwd *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; + int status; size_t p2len; - if (yp_get_default_domain (&ypdomain) != YPERR_SUCCESS) + /* Leave function if NSS module does not support getpwnam_r, + we need this function here. */ + if (!nss_getpwnam_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_pwd_free (&ent->pwd); return NSS_STATUS_UNAVAIL; } @@ -428,7 +356,6 @@ getpwent_next_nis_netgr (const char *name, struct passwd *result, ent_t *ent, while (1) { char *saved_cursor; - int parse_res; saved_cursor = ent->netgrdata.cursor; status = __internal_getnetgrent_r (&host, &user, &domain, @@ -445,7 +372,7 @@ getpwent_next_nis_netgr (const char *name, struct passwd *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. */ @@ -453,148 +380,23 @@ getpwent_next_nis_netgr (const char *name, struct passwd *result, ent_t *ent, if (strcmp (user, name) != 0) continue; - if (yp_match (ypdomain, "passwd.byname", user, - strlen (user), &outval, &outvallen) - != YPERR_SUCCESS) - continue; - - if (insert_passwd_adjunct (&outval, &outvallen, ypdomain, errnop) - != NSS_STATUS_SUCCESS) - { - free (outval); - return NSS_STATUS_TRYAGAIN; - } - p2len = pwd_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) outvallen + 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_pwent (p, result, data, buflen, errnop); - if (parse_res == -1) - { - ent->netgrdata.cursor = saved_cursor; - return NSS_STATUS_TRYAGAIN; - } - - if (parse_res && !in_blacklist (result->pw_name, - strlen (result->pw_name), ent)) - { - /* Store the User in the blacklist for the "+" at the end of - /etc/passwd */ - blacklist_store_name (result->pw_name, ent); - copy_pwd_changes (result, &ent->pwd, p2, p2len); - break; - } - } - - return NSS_STATUS_SUCCESS; -} - -static enum nss_status -getpwent_next_nisplus_netgr (const char *name, struct passwd *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_pwd_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_pwd_free (&ent->pwd); - return NSS_STATUS_RETURN; - } - - if (user == NULL || user[0] == '-') + if (nss_getpwnam_r (user, result, buffer, buflen, errnop) != + NSS_STATUS_SUCCESS) 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; - - p2len = pwd_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_PATH | FOLLOW_LINKS, NULL, NULL); - } - if (niserr2nss (nisres->status) != NSS_STATUS_SUCCESS) - { - nis_freeresult (nisres); - continue; - } - parse_res = _nss_nisplus_parse_pwent (nisres, result, buffer, - buflen, errnop); - if (parse_res == -1) - { - nis_freeresult (nisres); - ent->netgrdata.cursor = saved_cursor; - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - nis_freeresult (nisres); - - if (parse_res && !in_blacklist (result->pw_name, - strlen (result->pw_name), ent)) + if (!in_blacklist (result->pw_name, strlen (result->pw_name), ent)) { - /* 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->pw_name, ent); copy_pwd_changes (result, &ent->pwd, p2, p2len); break; @@ -604,100 +406,18 @@ getpwent_next_nisplus_netgr (const char *name, struct passwd *result, return NSS_STATUS_SUCCESS; } -/* get the next user from NIS+ (+ entry) */ +/* get the next user from NSS (+ entry) */ static enum nss_status -getpwent_next_nisplus (struct passwd *result, ent_t *ent, char *buffer, - size_t buflen, int *errnop) -{ - int parse_res; - size_t p2len; - char *p2; - - p2len = pwd_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_pwd_free (&ent->pwd); - return niserr2nss (ent->result->status); - } - ent->first = FALSE; - } - else - { - nis_result *res; - - res = nis_next_entry (pwdtable, &ent->result->cookie); - saved_res = ent->result; - saved_first = FALSE; - ent->result = res; - if (niserr2nss (ent->result->status) != NSS_STATUS_SUCCESS) - { - ent->nis = 0; - nis_freeresult (saved_res); - give_pwd_free (&ent->pwd); - return niserr2nss (ent->result->status); - } - } - parse_res = _nss_nisplus_parse_pwent (ent->result, result, buffer, - buflen, errnop); - if (parse_res == -1) - { - nis_freeresult (ent->result); - ent->result = saved_res; - ent->first = saved_first; - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - else - { - if (!saved_first) - nis_freeresult (saved_res); - } - - if (parse_res && - in_blacklist (result->pw_name, strlen (result->pw_name), ent)) - parse_res = 0; /* if result->pw_name in blacklist,search next entry */ - } - while (!parse_res); - - copy_pwd_changes (result, &ent->pwd, p2, p2len); - - return NSS_STATUS_SUCCESS; -} - -static enum nss_status -getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer, +getpwent_next_nss (struct passwd *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_pwd_free (&ent->pwd); - return NSS_STATUS_UNAVAIL; - } + /* Return if NSS module does not support getpwent_r. */ + if (!nss_getpwent_r) + return NSS_STATUS_UNAVAIL; p2len = pwd_need_buflen (&ent->pwd); if (p2len > buflen) @@ -707,103 +427,17 @@ getpwent_next_nis (struct passwd *result, ent_t *ent, char *buffer, } p2 = buffer + (buflen - p2len); buflen -= p2len; - do - { - bool_t saved_first; - char *saved_oldkey; - int saved_oldlen; - if (ent->first) - { - if (yp_first (domain, "passwd.byname", &outkey, &outkeylen, - &outval, &outvallen) != YPERR_SUCCESS) - { - ent->nis = 0; - give_pwd_free (&ent->pwd); - return NSS_STATUS_UNAVAIL; - } + if (ent->first) + ent->first = FALSE; - if (insert_passwd_adjunct (&outval, &outvallen, domain, errnop) != - NSS_STATUS_SUCCESS) - { - free (outval); - return NSS_STATUS_TRYAGAIN; - } - - 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, "passwd.byname", ent->oldkey, ent->oldkeylen, - &outkey, &outkeylen, &outval, &outvallen) - != YPERR_SUCCESS) - { - ent->nis = 0; - give_pwd_free (&ent->pwd); - return NSS_STATUS_NOTFOUND; - } - - if (insert_passwd_adjunct (&outval, &outvallen, domain, errnop) - != NSS_STATUS_SUCCESS) - { - free (outval); - return NSS_STATUS_TRYAGAIN; - } - - 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_pwent (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->pw_name, strlen (result->pw_name), ent)) - parse_res = 0; + do + { + if ((status = nss_getpwent_r (result, buffer, buflen, errnop)) != + NSS_STATUS_SUCCESS) + return status; } - while (!parse_res); + while (in_blacklist (result->pw_name, strlen (result->pw_name), ent)); copy_pwd_changes (result, &ent->pwd, p2, p2len); @@ -815,12 +449,13 @@ static enum nss_status getpwnam_plususer (const char *name, struct passwd *result, ent_t *ent, char *buffer, size_t buflen, int *errnop) { - struct parser_data *data = (void *) buffer; struct passwd pwd; - int parse_res; char *p; size_t plen; + if (!nss_getpwnam_r) + return NSS_STATUS_UNAVAIL; + memset (&pwd, '\0', sizeof (struct passwd)); copy_pwd_changes (&pwd, result, NULL, 0); @@ -834,88 +469,17 @@ getpwnam_plususer (const char *name, struct passwd *result, ent_t *ent, 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, FOLLOW_PATH | FOLLOW_LINKS, 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_pwent (res, result, buffer, - buflen, errnop); - - nis_freeresult (res); - - if (parse_res == -1) - { - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - if (in_blacklist (result->pw_name, strlen (result->pw_name), ent)) - return NSS_STATUS_NOTFOUND; - } - 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, "passwd.byname", name, strlen (name), - &outval, &outvallen) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - if (insert_passwd_adjunct (&outval, &outvallen, domain, errnop) - != NSS_STATUS_SUCCESS) - { - free (outval); - return NSS_STATUS_TRYAGAIN; - } - - if (buflen < ((size_t) outvallen + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - ptr = strncpy (buffer, outval, buflen); - free (outval); - - while (isspace (*ptr)) - ptr++; - - parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop); - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; + if (nss_getpwnam_r (name, result, buffer, buflen, errnop) != + NSS_STATUS_SUCCESS) + return NSS_STATUS_NOTFOUND; - if (in_blacklist (result->pw_name, strlen (result->pw_name), ent)) - return NSS_STATUS_NOTFOUND; - } + if (in_blacklist (result->pw_name, strlen (result->pw_name), ent)) + return NSS_STATUS_NOTFOUND; - if (parse_res > 0) - { - copy_pwd_changes (result, &pwd, p, plen); - give_pwd_free (&pwd); - /* We found the entry. */ - return NSS_STATUS_SUCCESS; - } - else - { - /* Give buffer the old len back */ - buflen += plen; - give_pwd_free (&pwd); - } - return NSS_STATUS_RETURN; + copy_pwd_changes (result, &pwd, p, plen); + give_pwd_free (&pwd); + /* We found the entry. */ + return NSS_STATUS_SUCCESS; } static enum nss_status @@ -951,9 +515,9 @@ getpwent_next_file (struct passwd *result, ent_t *ent, while (isspace (*p)) ++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. */ + 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_res = _nss_files_parse_pwent (p, result, data, buflen, errnop))); @@ -1000,14 +564,9 @@ getpwent_next_file (struct passwd *result, ent_t *ent, ent->first = TRUE; copy_pwd_changes (&ent->pwd, result, NULL, 0); - if (use_nisplus) - status = getpwent_next_nisplus_netgr (NULL, result, ent, - &result->pw_name[2], - buffer, buflen, errnop); - else - status = getpwent_next_nis_netgr (NULL, result, ent, - &result->pw_name[2], - buffer, buflen, errnop); + status = getpwent_next_nss_netgr (NULL, result, ent, + &result->pw_name[2], + buffer, buflen, errnop); if (status == NSS_STATUS_RETURN) continue; else @@ -1036,35 +595,31 @@ getpwent_next_file (struct passwd *result, ent_t *ent, buffer, buflen, errnop); blacklist_store_name (buf, ent); - if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ + 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_RETURN /* We couldn't parse the entry */ - || status == NSS_STATUS_NOTFOUND) /* entry doesn't exist */ - continue; - else - { - if (status == NSS_STATUS_TRYAGAIN) - { - /* The parser ran out of space */ - fsetpos (ent->stream, &pos); - *errnop = ERANGE; - } - return status; - } + { + if (status == NSS_STATUS_TRYAGAIN) + { + /* The parser ran out of space */ + fsetpos (ent->stream, &pos); + *errnop = ERANGE; + } + return status; + } } /* +:... */ if (result->pw_name[0] == '+' && result->pw_name[1] == '\0') { - ent->nis = TRUE; + ent->files = FALSE; ent->first = TRUE; copy_pwd_changes (&ent->pwd, result, NULL, 0); - if (use_nisplus) - return getpwent_next_nisplus (result, ent, buffer, buflen, errnop); - else - return getpwent_next_nis (result, ent, buffer, buflen, errnop); + return getpwent_next_nss (result, ent, buffer, buflen, errnop); } } @@ -1082,53 +637,41 @@ internal_getpwent_r (struct passwd *pw, ent_t *ent, char *buffer, /* 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 = getpwent_next_nisplus_netgr (NULL, pw, ent, NULL, buffer, - buflen, errnop); - else - status = getpwent_next_nis_netgr (NULL, pw, ent, NULL, buffer, buflen, - errnop); + status = getpwent_next_nss_netgr (NULL, pw, ent, NULL, buffer, buflen, + errnop); if (status == NSS_STATUS_RETURN) return getpwent_next_file (pw, ent, buffer, buflen, errnop); else return status; } + else if (ent->files) + return getpwent_next_file (pw, ent, buffer, buflen, errnop); else - if (ent->nis) - { - if (use_nisplus) - return getpwent_next_nisplus (pw, ent, buffer, buflen, errnop); - else - return getpwent_next_nis (pw, ent, buffer, buflen, errnop); - } - else - return getpwent_next_file (pw, ent, buffer, buflen, errnop); + return getpwent_next_nss (pw, ent, buffer, buflen, errnop); + } enum nss_status _nss_compat_getpwent_r (struct passwd *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 ("passwd_compat", NULL, "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); - /* Be prepared that the setpwent function was not called before. */ if (ext_ent.stream == NULL) - status = internal_setpwent (&ext_ent); + result = internal_setpwent (&ext_ent, 1); - if (status == NSS_STATUS_SUCCESS) - status = internal_getpwent_r (pwd, &ext_ent, buffer, buflen, errnop); + if (result == NSS_STATUS_SUCCESS) + result = internal_getpwent_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 */ @@ -1167,9 +710,9 @@ internal_getpwnam_r (const char *name, struct passwd *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_pwent (p, result, data, buflen, errnop))); @@ -1210,8 +753,8 @@ internal_getpwnam_r (const char *name, struct passwd *result, ent_t *ent, status = getpwnam_plususer (name, result, ent, buffer, buflen, errnop); - if (status == NSS_STATUS_RETURN) - continue; + if (status == NSS_STATUS_RETURN) + continue; return status; } @@ -1253,13 +796,12 @@ internal_getpwnam_r (const char *name, struct passwd *result, ent_t *ent, status = getpwnam_plususer (name, result, ent, buffer, buflen, errnop); - if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ + if (status == NSS_STATUS_SUCCESS) /* We found the entry. */ break; + else if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ + return NSS_STATUS_NOTFOUND; else - if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ - return NSS_STATUS_NOTFOUND; - else - return status; + return status; } } return NSS_STATUS_SUCCESS; @@ -1269,9 +811,9 @@ enum nss_status _nss_compat_getpwnam_r (const char *name, struct passwd *pwd, char *buffer, size_t buflen, int *errnop) { - ent_t ent = {0, 0, 0, NULL, 0, NULL, NULL, {NULL, 0, 0}, - {NULL, NULL, 0, 0, NULL, NULL, NULL}}; - enum nss_status status; + enum nss_status result; + ent_t ent = {0, 0, TRUE, NULL, {NULL, 0, 0}, + {NULL, NULL, 0, 0, NULL, NULL, NULL}}; if (name[0] == '-' || name[0] == '+') return NSS_STATUS_NOTFOUND; @@ -1279,35 +821,32 @@ _nss_compat_getpwnam_r (const char *name, struct passwd *pwd, __libc_lock_lock (lock); if (ni == NULL) - { - __nss_database_lookup ("passwd_compat", NULL, "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); __libc_lock_unlock (lock); - status = internal_setpwent (&ent); - if (status != NSS_STATUS_SUCCESS) - return status; + result = internal_setpwent (&ent, 0); - status = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop); + if (result == NSS_STATUS_SUCCESS) + result = internal_getpwnam_r (name, pwd, &ent, buffer, buflen, errnop); internal_endpwent (&ent); - return status; + return result; } /* This function handle the + entry in /etc/passwd for getpwuid */ static enum nss_status getpwuid_plususer (uid_t uid, struct passwd *result, char *buffer, - size_t buflen, int *errnop) + size_t buflen, int *errnop) { - struct parser_data *data = (void *) buffer; struct passwd pwd; - int parse_res; char *p; size_t plen; + if (!nss_getpwuid_r) + return NSS_STATUS_UNAVAIL; + memset (&pwd, '\0', sizeof (struct passwd)); copy_pwd_changes (&pwd, result, NULL, 0); @@ -1321,70 +860,8 @@ getpwuid_plususer (uid_t uid, struct passwd *result, char *buffer, p = buffer + (buflen - plen); buflen -= plen; - if (use_nisplus) /* Do the NIS+ query here */ - { - nis_result *res; - char buf[1024 + pwdtablelen]; - - snprintf (buf, sizeof (buf), "[uid=%lu],%s", (unsigned long int) uid, - pwdtable); - res = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL); - if (niserr2nss (res->status) != NSS_STATUS_SUCCESS) - { - enum nss_status status = niserr2nss (res->status); - - nis_freeresult (res); - return status; - } - if ((parse_res = _nss_nisplus_parse_pwent (res, result, buffer, - buflen, errnop)) == -1) - { - nis_freeresult (res); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - nis_freeresult (res); - } - else /* Use NIS */ - { - char buf[1024]; - char *domain, *outval, *ptr; - int outvallen; - - if (yp_get_default_domain (&domain) != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - sprintf (buf, "%lu", (unsigned long int) uid); - if (yp_match (domain, "passwd.byuid", buf, strlen (buf), - &outval, &outvallen) - != YPERR_SUCCESS) - return NSS_STATUS_NOTFOUND; - - if (insert_passwd_adjunct (&outval, &outvallen, domain, errnop) - != NSS_STATUS_SUCCESS) - { - free (outval); - return NSS_STATUS_TRYAGAIN; - } - - if (buflen < ((size_t) outvallen + 1)) - { - free (outval); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - ptr = strncpy (buffer, outval, buflen); - free (outval); - - while (isspace (*ptr)) - ptr++; - parse_res = _nss_files_parse_pwent (ptr, result, data, buflen, errnop); - if (parse_res == -1) - return NSS_STATUS_TRYAGAIN; - } - - if (parse_res > 0) + if (nss_getpwuid_r (uid, result, buffer, buflen, errnop) == + NSS_STATUS_SUCCESS) { copy_pwd_changes (result, &pwd, p, plen); give_pwd_free (&pwd); @@ -1400,10 +877,10 @@ getpwuid_plususer (uid_t uid, struct passwd *result, char *buffer, return NSS_STATUS_RETURN; } -/* Searches in /etc/passwd and the NIS/NIS+ map for a special user id */ +/* Searches in /etc/passwd and the NSS subsystem for a special user id */ static enum nss_status internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, - char *buffer, size_t buflen, int *errnop) + char *buffer, size_t buflen, int *errnop) { struct parser_data *data = (void *) buffer; @@ -1414,54 +891,54 @@ internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, int parse_res; do - { - fgetpos (ent->stream, &pos); - buffer[buflen - 1] = '\xff'; - p = fgets (buffer, buflen, ent->stream); - if (p == NULL && feof (ent->stream)) + { + fgetpos (ent->stream, &pos); + buffer[buflen - 1] = '\xff'; + p = fgets (buffer, buflen, ent->stream); + if (p == NULL && feof (ent->stream)) return NSS_STATUS_NOTFOUND; - if (p == NULL || buffer[buflen - 1] != '\xff') - { - fsetpos (ent->stream, &pos); - *errnop = ERANGE; - return NSS_STATUS_TRYAGAIN; - } - - /* Terminate the line for any case. */ - buffer[buflen - 1] = '\0'; - - /* Skip leading blanks. */ - while (isspace (*p)) - ++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_res = _nss_files_parse_pwent (p, result, data, buflen, - errnop))); + if (p == NULL || buffer[buflen - 1] != '\xff') + { + fsetpos (ent->stream, &pos); + *errnop = ERANGE; + return NSS_STATUS_TRYAGAIN; + } + + /* Terminate the line for any case. */ + buffer[buflen - 1] = '\0'; + + /* Skip leading blanks. */ + while (isspace (*p)) + ++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_res = _nss_files_parse_pwent (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; + } /* This is a real entry. */ if (result->pw_name[0] != '+' && result->pw_name[0] != '-') - { - if (result->pw_uid == uid) - return NSS_STATUS_SUCCESS; - else - continue; - } + { + if (result->pw_uid == uid) + return NSS_STATUS_SUCCESS; + else + continue; + } /* -@netgroup */ if (result->pw_name[0] == '-' && result->pw_name[1] == '@' - && result->pw_name[2] != '\0') - { + && result->pw_name[2] != '\0') + { char buf[strlen (result->pw_name)]; enum nss_status status; @@ -1472,13 +949,13 @@ internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, innetgr (buf, NULL, result->pw_name, NULL)) return NSS_STATUS_NOTFOUND; - continue; - } + continue; + } /* +@netgroup */ if (result->pw_name[0] == '+' && result->pw_name[1] == '@' - && result->pw_name[2] != '\0') - { + && result->pw_name[2] != '\0') + { char buf[strlen (result->pw_name)]; enum nss_status status; @@ -1494,19 +971,18 @@ internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, if (innetgr (buf, NULL, result->pw_name, NULL)) return NSS_STATUS_SUCCESS; } + else if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ + return NSS_STATUS_NOTFOUND; else - if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ - return NSS_STATUS_NOTFOUND; - else - return status; + return status; - continue; + continue; } /* -user */ if (result->pw_name[0] == '-' && result->pw_name[1] != '\0' - && result->pw_name[1] != '@') - { + && result->pw_name[1] != '@') + { char buf[strlen (result->pw_name)]; enum nss_status status; @@ -1516,13 +992,13 @@ internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, if (status == NSS_STATUS_SUCCESS && innetgr (buf, NULL, result->pw_name, NULL)) return NSS_STATUS_NOTFOUND; - continue; - } + continue; + } /* +user */ if (result->pw_name[0] == '+' && result->pw_name[1] != '\0' - && result->pw_name[1] != '@') - { + && result->pw_name[1] != '@') + { char buf[strlen (result->pw_name)]; enum nss_status status; @@ -1538,60 +1014,54 @@ internal_getpwuid_r (uid_t uid, struct passwd *result, ent_t *ent, if (strcmp (buf, result->pw_name) == 0) return NSS_STATUS_SUCCESS; } + else if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ + return NSS_STATUS_NOTFOUND; else - if (status == NSS_STATUS_RETURN) /* We couldn't parse the entry */ - return NSS_STATUS_NOTFOUND; - else - return status; + return status; - continue; - } + continue; + } /* +:... */ if (result->pw_name[0] == '+' && result->pw_name[1] == '\0') - { - enum nss_status status; - - status = getpwuid_plususer (uid, 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 */ - return NSS_STATUS_NOTFOUND; - else - return status; - } + { + enum nss_status status; + + status = getpwuid_plususer (uid, 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 */ + return NSS_STATUS_NOTFOUND; + else + return status; + } } return NSS_STATUS_SUCCESS; } enum nss_status _nss_compat_getpwuid_r (uid_t uid, struct passwd *pwd, - char *buffer, size_t buflen, int *errnop) + 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, 0, TRUE, NULL, {NULL, 0, 0}, {NULL, NULL, 0, 0, NULL, NULL, NULL}}; - enum nss_status status; __libc_lock_lock (lock); if (ni == NULL) - { - __nss_database_lookup ("passwd_compat", NULL, "nis", &ni); - use_nisplus = (strcmp (ni->name, "nisplus") == 0); - } + init_nss_interface (); __libc_lock_unlock (lock); - status = internal_setpwent (&ent); - if (status != NSS_STATUS_SUCCESS) - return status; + result = internal_setpwent (&ent, 0); - status = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop); + if (result == NSS_STATUS_SUCCESS) + result = internal_getpwuid_r (uid, pwd, &ent, buffer, buflen, errnop); internal_endpwent (&ent); - return status; + return result; } @@ -1653,7 +1123,7 @@ 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; } |