+++ /dev/null
-/* Copyright (C) 1996-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Thorsten Kukuk <kukuk@suse.de>, 1996.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <nss.h>
-#include <ctype.h>
-#include <errno.h>
-#include <string.h>
-#include <syslog.h>
-#include <rpc/rpc.h>
-#include <rpcsvc/yp.h>
-#include <rpcsvc/ypclnt.h>
-#include <rpc/key_prot.h>
-#include <rpc/des_crypt.h>
-
-#include "nss-nis.h"
-
-/* If we haven't found the entry, we give a SUCCESS and an empty key back.
- Solaris docu says: sizeof (pkey) == HEXKEYBYTES + 1.
-*/
-enum nss_status
-_nss_nis_getpublickey (const char *netname, char *pkey, int *errnop)
-{
- pkey[0] = 0;
-
- if (netname == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- char *domain = strchr (netname, '@');
- if (domain == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
- ++domain;
-
- char *result;
- int len;
- int yperr = yp_match (domain, "publickey.byname", netname, strlen (netname),
- &result, &len);
-
- if (__glibc_unlikely (yperr != YPERR_SUCCESS))
- {
- enum nss_status retval = yperr2nss (yperr);
-
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- return retval;
- }
-
- if (result != NULL)
- {
- char *p = strchr (result, ':');
- if (p != NULL)
- *p = 0;
- strncpy (pkey, result, HEXKEYBYTES + 1);
- pkey[HEXKEYBYTES] = '\0';
- free (result);
- }
- return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nis_getsecretkey (const char *netname, char *skey, char *passwd,
- int *errnop)
-{
- skey[0] = 0;
-
- if (netname == NULL || passwd == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- char *domain = strchr (netname, '@');
- if (domain == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
- ++domain;
-
- char *result;
- int len;
- int yperr = yp_match (domain, "publickey.byname", netname, strlen (netname),
- &result, &len);
-
- if (__glibc_unlikely (yperr != YPERR_SUCCESS))
- {
- enum nss_status retval = yperr2nss (yperr);
-
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- return retval;
- }
-
- if (result != NULL)
- {
- char *p = strchr (result, ':');
- if (p != NULL)
- {
- char buf[2 * (HEXKEYBYTES + 1)];
-
- ++p;
- strncpy (buf, p, 2 * (HEXKEYBYTES + 1));
- buf[2 * HEXKEYBYTES + 1] = '\0';
- if (xdecrypt (buf, passwd)
- && memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) == 0)
- {
- buf[HEXKEYBYTES] = '\0';
- strcpy (skey, buf);
- }
- }
-
- free (result);
- }
- return NSS_STATUS_SUCCESS;
-}
-
-/* Parse uid and group information from the passed string.
- The format of the string passed is uid:gid,grp,grp, ... */
-static enum nss_status
-parse_netid_str (const char *s, uid_t *uidp, gid_t *gidp, int *gidlenp,
- gid_t *gidlist)
-{
- char *p, *ep;
- int gidlen;
-
- if (!s || !isdigit (*s))
- {
- syslog (LOG_ERR, "netname2user: expecting uid '%s'", s);
- return NSS_STATUS_NOTFOUND; /* XXX need a better error */
- }
-
- /* Fetch the uid */
- *uidp = strtoul (s, NULL, 10);
-
- if (*uidp == 0)
- {
- syslog (LOG_ERR, "netname2user: should not have uid 0");
- return NSS_STATUS_NOTFOUND;
- }
-
- /* Now get the group list */
- p = strchr (s, ':');
- if (!p)
- {
- syslog (LOG_ERR, "netname2user: missing group id list in '%s'", s);
- return NSS_STATUS_NOTFOUND;
- }
- ++p; /* skip ':' */
- if (!p || (!isdigit (*p)))
- {
- syslog (LOG_ERR, "netname2user: missing group id list in '%s'.", p);
- return NSS_STATUS_NOTFOUND;
- }
-
- *gidp = strtoul (p, &ep, 10);
-
- gidlen = 0;
-
- /* After strtoul() ep should point to the first invalid character.
- This is the marker "," we search for the next value. */
- while (ep != NULL && *ep == ',')
- {
- ep++;
- p = ep;
- gidlist[gidlen++] = strtoul (p, &ep, 10);
- }
-
- *gidlenp = gidlen;
-
- return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nis_netname2user (char netname[MAXNETNAMELEN + 1], uid_t *uidp,
- gid_t *gidp, int *gidlenp, gid_t *gidlist, int *errnop)
-{
- char *domain = strchr (netname, '@');
- if (domain == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- /* Point past the '@' character */
- ++domain;
- char *lookup = NULL;
- int len;
- int yperr = yp_match (domain, "netid.byname", netname, strlen (netname),
- &lookup, &len);
- switch (yperr)
- {
- case YPERR_SUCCESS:
- break; /* the successful case */
- case YPERR_DOMAIN:
- case YPERR_KEY:
- return NSS_STATUS_NOTFOUND;
- case YPERR_MAP:
- default:
- return NSS_STATUS_UNAVAIL;
- }
-
- if (lookup == NULL)
- return NSS_STATUS_NOTFOUND;
-
-
- lookup[len] = '\0';
-
- enum nss_status err = parse_netid_str (lookup, uidp, gidp, gidlenp, gidlist);
-
- free (lookup);
-
- return err;
-}
+++ /dev/null
-/* Copyright (c) 1997-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <nss.h>
-#include <ctype.h>
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-#include <libintl.h>
-#include <syslog.h>
-#include <rpc/rpc.h>
-#include <rpcsvc/nis.h>
-#include <rpc/key_prot.h>
-extern int xdecrypt (char *, char *);
-
-#include <nss-nisplus.h>
-
-/* If we haven't found the entry, we give a SUCCESS and an empty key back. */
-enum nss_status
-_nss_nisplus_getpublickey (const char *netname, char *pkey, int *errnop)
-{
- nis_result *res;
- enum nss_status retval;
- char buf[NIS_MAXNAMELEN + 2];
- size_t slen;
- char *domain, *cptr;
- int len;
-
- pkey[0] = 0;
-
- if (netname == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- domain = strchr (netname, '@');
- if (!domain)
- return NSS_STATUS_UNAVAIL;
- domain++;
-
- slen = snprintf (buf, NIS_MAXNAMELEN,
- "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
- netname, domain);
-
- if (slen >= NIS_MAXNAMELEN)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- if (buf[slen - 1] != '.')
- {
- buf[slen++] = '.';
- buf[slen] = '\0';
- }
-
- res = nis_list (buf, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
- NULL, NULL);
-
- if (res == NULL)
- {
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
- retval = niserr2nss (res->status);
-
- if (retval != NSS_STATUS_SUCCESS)
- {
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- if (res->status == NIS_NOTFOUND)
- retval = NSS_STATUS_SUCCESS;
- nis_freeresult (res);
- return retval;
- }
-
- if (NIS_RES_NUMOBJ (res) > 1)
- {
- /*
- * More than one principal with same uid?
- * something wrong with cred table. Should be unique
- * Warn user and continue.
- */
- syslog (LOG_ERR, _("DES entry for netname %s not unique\n"), netname);
- nis_freeresult (res);
- return NSS_STATUS_SUCCESS;
- }
-
- len = ENTRY_LEN (NIS_RES_OBJECT (res), 3);
- memcpy (pkey, ENTRY_VAL (NIS_RES_OBJECT (res),3), len);
- pkey[len] = 0;
- cptr = strchr (pkey, ':');
- if (cptr)
- cptr[0] = '\0';
- nis_freeresult (res);
-
- return NSS_STATUS_SUCCESS;
-}
-
-
-enum nss_status
-_nss_nisplus_getsecretkey (const char *netname, char *skey, char *passwd,
- int *errnop)
-{
- nis_result *res;
- enum nss_status retval;
- char buf[NIS_MAXNAMELEN + 2];
- size_t slen;
- char *domain, *cptr;
- int len;
-
- skey[0] = 0;
-
- if (netname == NULL)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- domain = strchr (netname, '@');
- if (!domain)
- return NSS_STATUS_UNAVAIL;
- domain++;
-
- slen = snprintf (buf, NIS_MAXNAMELEN,
- "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
- netname, domain);
-
- if (slen >= NIS_MAXNAMELEN)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- if (buf[slen - 1] != '.')
- {
- buf[slen++] = '.';
- buf[slen] = '\0';
- }
-
- res = nis_list (buf, USE_DGRAM | NO_AUTHINFO | FOLLOW_LINKS | FOLLOW_PATH,
- NULL, NULL);
-
- if (res == NULL)
- {
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
- retval = niserr2nss (res->status);
-
- if (retval != NSS_STATUS_SUCCESS)
- {
- if (retval == NSS_STATUS_TRYAGAIN)
- *errnop = errno;
- nis_freeresult (res);
- return retval;
- }
-
- if (NIS_RES_NUMOBJ (res) > 1)
- {
- /*
- * More than one principal with same uid?
- * something wrong with cred table. Should be unique
- * Warn user and continue.
- */
- syslog (LOG_ERR, _("DES entry for netname %s not unique\n"), netname);
- nis_freeresult (res);
- return NSS_STATUS_SUCCESS;
- }
-
- len = ENTRY_LEN (NIS_RES_OBJECT (res), 4);
- memcpy (buf, ENTRY_VAL (NIS_RES_OBJECT (res), 4), len);
- buf[len] = '\0';
- cptr = strchr (buf, ':');
- if (cptr)
- cptr[0] = '\0';
- nis_freeresult (res);
-
- if (!xdecrypt (buf, passwd))
- return NSS_STATUS_SUCCESS;
-
- if (memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) != 0)
- return NSS_STATUS_SUCCESS;
-
- buf[HEXKEYBYTES] = 0;
- strcpy (skey, buf);
-
- return NSS_STATUS_SUCCESS;
-}
-
-
-/* Parse information from the passed string.
- The format of the string passed is gid,grp,grp, ... */
-static enum nss_status
-parse_grp_str (const char *s, gid_t *gidp, int *gidlenp, gid_t *gidlist,
- int *errnop)
-{
- char *ep;
- int gidlen;
-
- if (!s || (!isdigit (*s)))
- {
- syslog (LOG_ERR, _("netname2user: missing group id list in `%s'"), s);
- return NSS_STATUS_NOTFOUND;
- }
-
- *gidp = strtoul (s, &ep, 10);
-
- gidlen = 0;
-
- /* After strtoul() ep should point to the marker ',', which means
- here starts a new value.
-
- The Sun man pages show that GIDLIST should contain at least NGRPS
- elements. Limiting the number written by this value is the best
- we can do. */
- while (ep != NULL && *ep == ',' && gidlen < NGRPS)
- {
- ep++;
- s = ep;
- gidlist[gidlen++] = strtoul (s, &ep, 10);
- }
- *gidlenp = gidlen;
-
- return NSS_STATUS_SUCCESS;
-}
-
-enum nss_status
-_nss_nisplus_netname2user (char netname[MAXNETNAMELEN + 1], uid_t *uidp,
- gid_t *gidp, int *gidlenp, gid_t *gidlist, int *errnop)
-{
- char *domain;
- nis_result *res;
- char sname[NIS_MAXNAMELEN + 2]; /* search criteria + table name */
- size_t slen;
- char principal[NIS_MAXNAMELEN + 1];
- int len;
-
- /* 1. Get home domain of user. */
- domain = strchr (netname, '@');
- if (! domain)
- return NSS_STATUS_UNAVAIL;
-
- ++domain; /* skip '@' */
-
- /* 2. Get user's nisplus principal name. */
- slen = snprintf (sname, NIS_MAXNAMELEN,
- "[auth_name=%s,auth_type=DES],cred.org_dir.%s",
- netname, domain);
-
- if (slen >= NIS_MAXNAMELEN)
- {
- *errnop = EINVAL;
- return NSS_STATUS_UNAVAIL;
- }
-
- if (sname[slen - 1] != '.')
- {
- sname[slen++] = '.';
- sname[slen] = '\0';
- }
-
- /* must use authenticated call here */
- /* XXX but we cant, for now. XXX */
- res = nis_list (sname, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
- NULL, NULL);
- if (res == NULL)
- {
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
- switch (res->status)
- {
- case NIS_SUCCESS:
- case NIS_S_SUCCESS:
- break; /* go and do something useful */
- case NIS_NOTFOUND:
- case NIS_PARTIAL:
- case NIS_NOSUCHNAME:
- case NIS_NOSUCHTABLE:
- nis_freeresult (res);
- return NSS_STATUS_NOTFOUND;
- case NIS_S_NOTFOUND:
- case NIS_TRYAGAIN:
- syslog (LOG_ERR, _("netname2user: (nis+ lookup): %s\n"),
- nis_sperrno (res->status));
- nis_freeresult (res);
- *errnop = errno;
- return NSS_STATUS_TRYAGAIN;
- default:
- syslog (LOG_ERR, _("netname2user: (nis+ lookup): %s\n"),
- nis_sperrno (res->status));
- nis_freeresult (res);
- return NSS_STATUS_UNAVAIL;
- }
-
- if (NIS_RES_NUMOBJ (res) > 1)
- /*
- * A netname belonging to more than one principal?
- * Something wrong with cred table. should be unique.
- * Warn user and continue.
- */
- syslog (LOG_ALERT,
- _("netname2user: DES entry for %s in directory %s not unique"),
- netname, domain);
-
- len = ENTRY_LEN (NIS_RES_OBJECT (res), 0);
- strncpy (principal, ENTRY_VAL (NIS_RES_OBJECT (res), 0), len);
- principal[len] = '\0';
- nis_freeresult (res);
-
- if (principal[0] == '\0')
- return NSS_STATUS_UNAVAIL;
-
- /*
- * 3. Use principal name to look up uid/gid information in
- * LOCAL entry in **local** cred table.
- */
- domain = nis_local_directory ();
- if (strlen (principal) + strlen (domain) + 45 > (size_t) NIS_MAXNAMELEN)
- {
- syslog (LOG_ERR, _("netname2user: principal name `%s' too long"),
- principal);
- return NSS_STATUS_UNAVAIL;
- }
-
- slen = snprintf (sname, sizeof (sname),
- "[cname=%s,auth_type=LOCAL],cred.org_dir.%s",
- principal, domain);
-
- if (sname[slen - 1] != '.')
- {
- sname[slen++] = '.';
- sname[slen] = '\0';
- }
-
- /* must use authenticated call here */
- /* XXX but we cant, for now. XXX */
- res = nis_list (sname, USE_DGRAM+NO_AUTHINFO+FOLLOW_LINKS+FOLLOW_PATH,
- NULL, NULL);
- if (res == NULL)
- {
- *errnop = ENOMEM;
- return NSS_STATUS_TRYAGAIN;
- }
- switch(res->status)
- {
- case NIS_NOTFOUND:
- case NIS_PARTIAL:
- case NIS_NOSUCHNAME:
- case NIS_NOSUCHTABLE:
- nis_freeresult (res);
- return NSS_STATUS_NOTFOUND;
- case NIS_S_NOTFOUND:
- case NIS_TRYAGAIN:
- syslog (LOG_ERR, _("netname2user: (nis+ lookup): %s\n"),
- nis_sperrno (res->status));
- nis_freeresult (res);
- *errnop = errno;
- return NSS_STATUS_TRYAGAIN;
- case NIS_SUCCESS:
- case NIS_S_SUCCESS:
- break; /* go and do something useful */
- default:
- syslog (LOG_ERR, _("netname2user: (nis+ lookup): %s\n"),
- nis_sperrno (res->status));
- nis_freeresult (res);
- return NSS_STATUS_UNAVAIL;
- }
-
- if (NIS_RES_NUMOBJ (res) > 1)
- /*
- * A principal can have more than one LOCAL entry?
- * Something wrong with cred table.
- * Warn user and continue.
- */
- syslog (LOG_ALERT,
- _("netname2user: LOCAL entry for %s in directory %s not unique"),
- netname, domain);
- /* Fetch the uid */
- *uidp = strtoul (ENTRY_VAL (NIS_RES_OBJECT (res), 2), NULL, 10);
-
- if (*uidp == 0)
- {
- syslog (LOG_ERR, _("netname2user: should not have uid 0"));
- nis_freeresult (res);
- return NSS_STATUS_NOTFOUND;
- }
-
- parse_grp_str (ENTRY_VAL (NIS_RES_OBJECT (res), 3),
- gidp, gidlenp, gidlist, errnop);
-
- nis_freeresult (res);
- return NSS_STATUS_SUCCESS;
-}
+++ /dev/null
-/* Public key file parser in nss_files module.
- Copyright (C) 1996-2020 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <https://www.gnu.org/licenses/>. */
-
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <netdb.h>
-#include <rpc/key_prot.h>
-#include <rpc/des_crypt.h>
-#include "nsswitch.h"
-
-NSS_DECLARE_MODULE_FUNCTIONS (files)
-
-#define DATAFILE "/etc/publickey"
-
-
-static enum nss_status
-search (const char *netname, char *result, int *errnop, int secret)
-{
- FILE *stream = fopen (DATAFILE, "rce");
- if (stream == NULL)
- return errno == EAGAIN ? NSS_STATUS_TRYAGAIN : NSS_STATUS_UNAVAIL;
-
- for (;;)
- {
- char buffer[HEXKEYBYTES * 2 + KEYCHECKSUMSIZE + MAXNETNAMELEN + 17];
- char *p;
- char *save_ptr;
-
- buffer[sizeof (buffer) - 1] = '\xff';
- p = fgets_unlocked (buffer, sizeof (buffer), stream);
- if (p == NULL)
- {
- /* End of file or read error. */
- *errnop = errno;
- fclose (stream);
- return NSS_STATUS_NOTFOUND;
- }
- else if (buffer[sizeof (buffer) - 1] != '\xff')
- {
- /* Invalid line in file? Skip remainder of line. */
- if (buffer[sizeof (buffer) - 2] != '\0')
- while (getc_unlocked (stream) != '\n')
- continue;
- continue;
- }
-
- /* Parse line. */
- p = __strtok_r (buffer, "# \t:\n", &save_ptr);
- if (p == NULL) /* Skip empty and comment lines. */
- continue;
- if (strcmp (p, netname) != 0)
- continue;
-
- /* A hit! Find the field we want and return. */
- p = __strtok_r (NULL, ":\n", &save_ptr);
- if (p == NULL) /* malformed line? */
- continue;
- if (secret)
- p = __strtok_r (NULL, ":\n", &save_ptr);
- if (p == NULL) /* malformed line? */
- continue;
- fclose (stream);
- strcpy (result, p);
- return NSS_STATUS_SUCCESS;
- }
-}
-
-enum nss_status
-_nss_files_getpublickey (const char *netname, char *pkey, int *errnop)
-{
- return search (netname, pkey, errnop, 0);
-}
-
-enum nss_status
-_nss_files_getsecretkey (const char *netname, char *skey, char *passwd,
- int *errnop)
-{
- enum nss_status status;
- char buf[HEXKEYBYTES + KEYCHECKSUMSIZE + 16];
-
- skey[0] = 0;
-
- status = search (netname, buf, errnop, 1);
- if (status != NSS_STATUS_SUCCESS)
- return status;
-
- if (!xdecrypt (buf, passwd))
- return NSS_STATUS_SUCCESS;
-
- if (memcmp (buf, &(buf[HEXKEYBYTES]), KEYCHECKSUMSIZE) != 0)
- return NSS_STATUS_SUCCESS;
-
- buf[HEXKEYBYTES] = 0;
- strcpy (skey, buf);
-
- return NSS_STATUS_SUCCESS;
-}
projects / thirdparty / glibc.git / commitdiff
