pax_global_header00006660000000000000000000000064126406574660014532gustar00rootroot0000000000000052 comment=64ad627f14111d74e12d7185a46d71dae1b23918 libnss-cache-0.15/000077500000000000000000000000001264065746600140125ustar00rootroot00000000000000libnss-cache-0.15/.gitignore000066400000000000000000000005211264065746600160000ustar00rootroot00000000000000last_pw_errno_test .libs/ .libs32/ .pc/ *.o *.so.* lookup gen_getent debian/files debian/libnss-cache.debhelper.log debian/libnss-cache.postinst.debhelper debian/libnss-cache.postrm.debhelper debian/libnss-cache.substvars debian/libnss-cache debian/patches *.dsc *.tar.gz *.deb *.changes *.upload *.diff.gz *.build a.out *.debian.tar.xz libnss-cache-0.15/.travis.yml000066400000000000000000000000311264065746600161150ustar00rootroot00000000000000language: c script: make libnss-cache-0.15/CONTRIBUTING.md000066400000000000000000000025631264065746600162510ustar00rootroot00000000000000Want to contribute? Great! First, read this page (including the small print at the end). ### Before you contribute Before we can use your code, you must sign the [Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual?csw=1) (CLA), which you can do online. The CLA is necessary mainly because you own the copyright to your changes, even after your contribution becomes part of our codebase, so we need your permission to use and distribute your code. We also need to be sure of various other things—for instance that you'll tell us if you know that your code infringes on other people's patents. You don't have to sign the CLA until after you've submitted your code for review and a member has approved it, but you must do it before we can put your code into our codebase. Before you start working on a larger contribution, you should get in touch with us first through the issue tracker with your idea so that we can help out and possibly guide you. 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Each version is given a distinguishing version number. If the Library as you received it specifies that a certain numbered version of the GNU Lesser General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that published version or of any later version published by the Free Software Foundation. If the Library as you received it does not specify a version number of the GNU Lesser General Public License, you may choose any version of the GNU Lesser General Public License ever published by the Free Software Foundation. If the Library as you received it specifies that a proxy can decide whether future versions of the GNU Lesser General Public License shall apply, that proxy's public statement of acceptance of any version is permanent authorization for you to choose that version for the Library. libnss-cache-0.15/Makefile000066400000000000000000000075221264065746600154600ustar00rootroot00000000000000CC ?= gcc CFLAGS ?= -Wall -Wstrict-prototypes CFLAGS += -fPIC LDFLAGS += -shared LIBRARY=libnss_cache.so.2.0 BASE_LIBRARY=libnss_cache.so.2 PREFIX=$(DESTDIR)/usr LIBDIR=$(PREFIX)/lib SONAME=libnss_cache.so.2 LD_SONAME=-Wl,-soname,$(SONAME) TESTDATA=.testdata LIBNSSCACHE = nss_cache.o compat/getpwent_r.o compat/getgrent_r.o SOURCES = Makefile gen_getent.c lookup.c nss_cache.c nss_cache.h nss_test.h COPYING version libnss-cache.spec VERSION = $(shell cat version) all: $(LIBRARY) check: test_getent time_lookups lookup: lookup.o $(LIBNSSCACHE) $(CC) $(CFLAGS) -o $@ $^ time_lookups: testdirs lookup_data lookup @echo Linear username lookups rm -f $(TESTDATA)/passwd.cache.ixname time -f %E lookup -c getpwnam -f $(TESTDATA)/rand_pwnames @echo Binary username lookups ../vendetta/files/gen_cache.py $(TESTDATA)/passwd.cache 1 $(TESTDATA)/passwd.cache.ixname time -f %E lookup -c getpwnam -f $(TESTDATA)/rand_pwnames @echo Linear UID lookups rm -f $(TESTDATA)/passwd.cache.ixuid time -f %E lookup -c getpwuid -f $(TESTDATA)/rand_pwuids @echo Binary UID lookups ../vendetta/files/gen_cache.py $(TESTDATA)/passwd.cache 3 $(TESTDATA)/passwd.cache.ixuid time -f %E lookup -c getpwuid -f $(TESTDATA)/rand_pwuids @echo Linear groupname lookups rm -f $(TESTDATA)/group.cache.ixname time -f %E lookup -c getgrnam -f $(TESTDATA)/rand_grnames @echo Binary groupname lookups sort -t: -k1,1 $(TESTDATA)/group.cache > $(TESTDATA)/group.cache.ixname ../vendetta/files/gen_cache.py $(TESTDATA)/group.cache 1 $(TESTDATA)/group.cache.ixname time -f %E lookup -c getgrnam -f $(TESTDATA)/rand_grnames @echo Linear GID lookups rm -f $(TESTDATA)/group.cache.ixgid time -f %E lookup -c getgrgid -f $(TESTDATA)/rand_grgids @echo Binary GID lookups ../vendetta/files/gen_cache.py $(TESTDATA)/group.cache 3 $(TESTDATA)/group.cache.ixgid time -f %E lookup -c getgrgid -f $(TESTDATA)/rand_grgids @echo Linear shadow lookups rm -f $(TESTDATA)/shadow.cache.ixname time -f %E lookup -c getspnam -f $(TESTDATA)/rand_spnames @echo Binary shadow lookups ../vendetta/files/gen_cache.py $(TESTDATA)/shadow.cache 1 $(TESTDATA)/shadow.cache.ixname time -f %E lookup -c getspnam -f $(TESTDATA)/rand_spnames gen_getent: gen_getent.o $(LIBNSSCACHE) $(CC) -o $@ $^ test_getent: getent_data gen_getent.c nss_cache.c sudo gen_getent diff $(TESTDATA)/passwd.cache $(TESTDATA)/passwd.cache.out diff $(TESTDATA)/group.cache $(TESTDATA)/group.cache.out diff $(TESTDATA)/shadow.cache $(TESTDATA)/shadow.cache.out lookup_data: getent_data cut -d : -f 1 $(TESTDATA)/passwd.cache |\ sort -R | head -500 > $(TESTDATA)/rand_pwnames cut -d : -f 3 $(TESTDATA)/passwd.cache |\ sort -R | head -500 > $(TESTDATA)/rand_pwuids cut -d : -f 1 $(TESTDATA)/group.cache |\ sort -R | head -500 > $(TESTDATA)/rand_grnames cut -d : -f 3 $(TESTDATA)/group.cache |\ sort -R | head -500 > $(TESTDATA)/rand_grgids cut -d : -f 1 $(TESTDATA)/shadow.cache |\ sort -R | head -500 > $(TESTDATA)/rand_spnames getent_data: testdirs getent passwd > $(TESTDATA)/passwd.cache getent group > $(TESTDATA)/group.cache sudo getent shadow > $(TESTDATA)/shadow.cache last_pw_errno_test: test/last_pw_errno_test.c $(CC) $(CFLAGS) -o $@ $^ testdirs: mkdir -p $(TESTDATA) $(LIBRARY): $(LIBNSSCACHE) $(CC) $(CFLAGS) $(LDFLAGS) $(LD_SONAME) -o $(LIBRARY) $+ clean: rm -f $(LIBRARY) *.o compat/*.o lookup gen_getent last_pw_errno_test rm -rf $(TESTDATA) install: all install -d $(LIBDIR) install $(LIBRARY) $(LIBDIR) ln -sf $(LIBRARY) $(LIBDIR)/$(BASE_LIBRARY) distclean: clean rm -f *~ \#* dist: rm -rf libnss-cache-$(VERSION) libnss-cache-$(VERSION).tar libnss-cache-$(VERSION).tar.gz mkdir libnss-cache-$(VERSION) cp $(SOURCES) libnss-cache-$(VERSION) tar cf libnss-cache-$(VERSION).tar libnss-cache-$(VERSION) gzip -9 libnss-cache-$(VERSION).tar rm -rf libnss-cache-$(VERSION) .PHONY: all dist clean install distclean libnss-cache-0.15/README.md000066400000000000000000000013461264065746600152750ustar00rootroot00000000000000nsscache - Asynchronously synchronise local NSS databases with remote directory services ======================================================================================== [![Build Status](https://travis-ci.org/google/libnss-cache.svg?branch=master)](https://travis-ci.org/google/libnss-cache) `libnss-cache` is a NSS module for reading directory service information for Linux hosts from an indexed, local disk cache of that directory service. It is paired with https://github.com/google/nsscache, a tool that asynchronously synchronises the local NSS database with remote directory services. Mailing list: https://groups.google.com/forum/#!forum/nsscache-discuss Issue history is at https://code.google.com/p/nsscache/issues/list libnss-cache-0.15/THANKS000066400000000000000000000000661264065746600147270ustar00rootroot00000000000000Sergei Trofimovich Kevin Bowling libnss-cache-0.15/bsdnss.c000066400000000000000000000045421264065746600154570ustar00rootroot00000000000000#include NSS_METHOD_PROTOTYPE(__nss_compat_getpwnam_r); NSS_METHOD_PROTOTYPE(__nss_compat_getpwuid_r); NSS_METHOD_PROTOTYPE(__nss_compat_getpwent_r); NSS_METHOD_PROTOTYPE(__nss_compat_setpwent); NSS_METHOD_PROTOTYPE(__nss_compat_endpwent); NSS_METHOD_PROTOTYPE(__nss_compat_getgrnam_r); NSS_METHOD_PROTOTYPE(__nss_compat_getgrgid_r); NSS_METHOD_PROTOTYPE(__nss_compat_getgrent_r); NSS_METHOD_PROTOTYPE(__nss_compat_setgrent); NSS_METHOD_PROTOTYPE(__nss_compat_endgrent); enum nss_status _nss_cache_getpwnam_r (const char *, struct passwd *, char *, size_t, int *); enum nss_status _nss_cache_getpwuid_r (uid_t, struct passwd *, char *, size_t, int *); enum nss_status _nss_cache_getpwent_r (struct passwd *, char *, size_t, int *); enum nss_status _nss_cache_setpwent (int); enum nss_status _nss_cache_endpwent (void); enum nss_status _nss_cache_getgrnam_r (const char *, struct group *, char *, size_t, int *); enum nss_status _nss_cache_getgrgid_r (gid_t, struct group *, char *, size_t, int *); enum nss_status _nss_cache_getgrent_r (struct group *, char *, size_t, int *); enum nss_status _nss_cache_setgrent (int); enum nss_status _nss_cache_endgrent (void); static ns_mtab methods[] = { { NSDB_PASSWD, "getpwnam_r", __nss_compat_getpwnam_r, _nss_cache_getpwnam_r }, { NSDB_PASSWD, "getpwuid_r", __nss_compat_getpwuid_r, _nss_cache_getpwuid_r }, { NSDB_PASSWD, "getpwent_r", __nss_compat_getpwent_r, _nss_cache_getpwent_r }, { NSDB_PASSWD, "endpwent", __nss_compat_endpwent, _nss_cache_endpwent }, { NSDB_PASSWD, "setpwent", __nss_compat_setpwent, _nss_cache_setpwent }, { NSDB_GROUP, "getgrnam_r", __nss_compat_getgrnam_r, _nss_cache_getgrnam_r }, { NSDB_GROUP, "getgrgid_r", __nss_compat_getgrgid_r, _nss_cache_getgrgid_r }, { NSDB_GROUP, "getgrent_r", __nss_compat_getgrent_r, _nss_cache_getgrent_r }, { NSDB_GROUP, "endgrent", __nss_compat_endgrent, _nss_cache_endgrent }, { NSDB_GROUP, "setgrent", __nss_compat_setgrent, _nss_cache_setgrent }, }; ns_mtab * nss_module_register (const char *name, unsigned int *size, nss_module_unregister_fn *unregister) { *size = sizeof (methods) / sizeof (methods[0]); *unregister = NULL; return (methods); } libnss-cache-0.15/compat/000077500000000000000000000000001264065746600152755ustar00rootroot00000000000000libnss-cache-0.15/compat/getgrent_r.c000066400000000000000000000055141264065746600176060ustar00rootroot00000000000000/* * ---------------------------------------------------------------------- * Copyright © 2005-2014 Rich Felker, et al. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * ---------------------------------------------------------------------- * * Adapted from http://www.musl-libc.org/ for libnss-cache * Copyright © 2015 Kevin Bowling */ #include #ifdef BSD #include #include #include #include #include #include static unsigned atou(char **s) { unsigned x; for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0'); return x; } int fgetgrent_r(FILE *f, struct group *gr, char *line, size_t size, struct group **res) { char *s, *mems; size_t i, nmem, need; int rv = 0; int ep; ptrdiff_t remain; for (;;) { line[size-1] = '\xff'; if ( (fgets(line, size, f) == NULL) || ferror(f) || (line[size-1] != '\xff') ) { rv = (line[size-1] != '\xff') ? ERANGE : ENOENT; line = 0; gr = 0; goto end; } ep = strcspn(line, "\n"); line[ep] = 0; s = line; gr->gr_name = s++; if (!(s = strchr(s, ':'))) continue; *s++ = 0; gr->gr_passwd = s; if (!(s = strchr(s, ':'))) continue; *s++ = 0; gr->gr_gid = atou(&s); if (*s != ':') continue; *s++ = 0; mems = s; break; } for (nmem=!!*s; *s; s++) if (*s==',') ++nmem; ++ep; remain = (void *) &line[size] - (void *) &line[ep]; need = (sizeof(char *) * (nmem+1)) + ALIGNBYTES; if (need > remain) { rv = ERANGE; line = 0; gr = 0; goto end; } memset(&line[ep], 0, need); gr->gr_mem = (char **) ALIGN(&line[ep]); if (*mems) { gr->gr_mem[0] = mems; for (s=mems, i=0; *s; s++) if (*s==',') *s++ = 0, gr->gr_mem[++i] = s; gr->gr_mem[++i] = 0; } else { gr->gr_mem[0] = 0; } end: *res = gr; if(rv) errno = rv; return rv; } #endif // ifdef BSD libnss-cache-0.15/compat/getpwent_r.c000066400000000000000000000047371264065746600176320ustar00rootroot00000000000000/* * ---------------------------------------------------------------------- * Copyright © 2005-2014 Rich Felker, et al. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * ---------------------------------------------------------------------- * * Adapted from http://www.musl-libc.org/ for libnss-cache * Copyright © 2015 Kevin Bowling */ #include #ifdef BSD #include #include #include #include #include static unsigned atou(char **s) { unsigned x; for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0'); return x; } int fgetpwent_r(FILE *f, struct passwd *pw, char *line, size_t size, struct passwd **res) { char *s; int rv = 0; for (;;) { line[size-1] = '\xff'; if ( (fgets(line, size, f) == NULL) || ferror(f) || line[size-1] != '\xff' ) { rv = (line[size-1] != '\xff') ? ERANGE : ENOENT; line = 0; pw = 0; break; } line[strcspn(line, "\n")] = 0; s = line; pw->pw_name = s++; if (!(s = strchr(s, ':'))) continue; *s++ = 0; pw->pw_passwd = s; if (!(s = strchr(s, ':'))) continue; *s++ = 0; pw->pw_uid = atou(&s); if (*s != ':') continue; *s++ = 0; pw->pw_gid = atou(&s); if (*s != ':') continue; *s++ = 0; pw->pw_gecos = s; if (!(s = strchr(s, ':'))) continue; *s++ = 0; pw->pw_dir = s; if (!(s = strchr(s, ':'))) continue; *s++ = 0; pw->pw_shell = s; break; } *res = pw; if (rv) errno = rv; return rv; } #endif // ifdef BSD libnss-cache-0.15/debian/000077500000000000000000000000001264065746600152345ustar00rootroot00000000000000libnss-cache-0.15/debian/changelog000066400000000000000000000043441264065746600171130ustar00rootroot00000000000000libnss-cache (0.13-1) unstable; urgency=medium * Update control file with VCS URLs. * New upstream version. * Update watch file to match new github upstream. * Bump standards version. -- Jamie Wilkinson Wed, 22 Oct 2014 10:41:44 +1100 libnss-cache (0.12-1) unstable; urgency=medium * New upstream release. (Closes: #745258; thanks Arthur Marble). * Ignore tarballs in debian/source/options. -- Jamie Wilkinson Thu, 22 May 2014 18:24:55 +1000 libnss-cache (0.11-2) unstable; urgency=low * Fix FTBFS with clang - Fixed the potential usage of an uninitialized variable error in nss_cache.c -- Arthur Marble Sat, 19 Apr 2014 16:02:56 -0500 libnss-cache (0.11-1) unstable; urgency=medium * New upstream release. * Change to arch: any, now builds on all architectures. * Update standards-version. * Depend on new debhelper. -- Jamie Wilkinson Sun, 23 Mar 2014 16:55:37 +1100 libnss-cache (0.10.2-1) unstable; urgency=low * New upstream release. -- Jamie Wilkinson Fri, 10 Feb 2012 01:05:46 +0000 libnss-cache (0.10.1-1) unstable; urgency=low * New upstream release. * Speeds up the name / uid / gid lookup in the nss-cache library. * don't search groups if the provided buffer is small enough that the chance of succeeding is small * create simple index structure with uniformly sized entries and mmap/bsearch as a replacement for a heuristic binary search * if the entry was not found in the index, do not fall back to linear search; still fall back if the entry was outdated, not accessible or if a value was not found at the expected offset * replace strcoll with strcmp for checking equality of the index, as the index is built based on a simple string sort -- Jamie Wilkinson Fri, 10 Feb 2012 11:11:07 +1100 libnss-cache (0.10-2) unstable; urgency=low * Remove post{inst,rm}, as dh_makeshlibs already does the ldconfig for us. -- Jamie Wilkinson Sat, 20 Aug 2011 09:04:28 +1000 libnss-cache (0.10-1) unstable; urgency=low * Initial release. (Closes: #609626) -- Jamie Wilkinson Fri, 22 Jul 2011 12:17:00 +1000 libnss-cache-0.15/debian/compat000066400000000000000000000000021264065746600164320ustar00rootroot000000000000009 libnss-cache-0.15/debian/control000066400000000000000000000012351264065746600166400ustar00rootroot00000000000000Source: libnss-cache Section: admin Priority: optional Maintainer: Jamie Wilkinson Build-Depends: debhelper (>= 9) Standards-Version: 3.9.6 Homepage: http://code.google.com/p/nsscache Vcs-Browser: https://github.com/google/libnss-cache/tree/debian Vcs-Git: https://github.com/google/libnss-cache -b debian Package: libnss-cache Architecture: any Depends: ${shlibs:Depends}, ${misc:Depends} Recommends: nsscache Description: NSS module for using nsscache-generated files This package provides a Name Service Switch module that uses .cache files as a name service. This means providing user account information, group ids, netgroups, and automounts. libnss-cache-0.15/debian/copyright000066400000000000000000000017361264065746600171760ustar00rootroot00000000000000This package was debianized by Jamie Wilkinson on Mon, 15 Aug 2011 14:49:23 +1100. Copyright: Copyright 2007-2011 Google, Inc. License: This package is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This package 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this package; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA On Debian systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL'. libnss-cache-0.15/debian/lintian-overrides000066400000000000000000000001541264065746600206150ustar00rootroot00000000000000# This shared library is only for NSS. libnss-cache binary: package-name-doesnt-match-sonames libnss-cache2 libnss-cache-0.15/debian/rules000077500000000000000000000007211264065746600163140ustar00rootroot00000000000000#!/usr/bin/make -f # -*- makefile -*- # Sample debian/rules that uses debhelper. # This file was originally written by Joey Hess and Craig Small. # As a special exception, when this file is copied by dh-make into a # dh-make output file, you may use that output file without restriction. # This special exception was added by Craig Small in version 0.37 of dh-make. # Uncomment this to turn on verbose mode. #export DH_VERBOSE=1 %: dh $@ override_dh_auto_test: libnss-cache-0.15/debian/source/000077500000000000000000000000001264065746600165345ustar00rootroot00000000000000libnss-cache-0.15/debian/source/format000066400000000000000000000000141264065746600177420ustar00rootroot000000000000003.0 (quilt) libnss-cache-0.15/debian/source/local-options000066400000000000000000000000201264065746600212320ustar00rootroot00000000000000unapply-patches libnss-cache-0.15/debian/watch000066400000000000000000000002361264065746600162660ustar00rootroot00000000000000version=3 opts=filenamemangle=s/.+\/v?(\d\S*)\.tar\.gz/libnss-cache-$1\.tar\.gz/ \ https://github.com/google/libnss-cache/tags .*/version\/(\d\S*)\.tar\.gz libnss-cache-0.15/gen_getent.c000066400000000000000000000161711264065746600163030ustar00rootroot00000000000000/* Copyright 2009 Google Inc. * * This 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. * * This 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA */ /* * A helper program to let us do simplistic unit testing of * libnss-cache functions. It does this by generating copies of the * maps in a data directory, using nss_cache.c get*ent() functions. */ #include "nss_cache.h" #include "nss_test.h" // getpwent_to_file() // Call the nss_cache getpwent function to dump the passwd store to a // file. static int getpwent_to_file(FILE *output) { struct passwd result; char *buffer; size_t buflen = 1024; int errnop; enum nss_status ret; _nss_cache_setpwent_path(PASSWD_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getpwent_r(&result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { fprintf(output, "%s:%s:%d:%d:%s:%s:%s\n", result.pw_name, result.pw_passwd, result.pw_uid, result.pw_gid, result.pw_gecos, result.pw_dir, result.pw_shell); } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 1; } } while (ret == NSS_STATUS_SUCCESS || ret == NSS_STATUS_TRYAGAIN); free(buffer); return 0; } // getgrent_to_file() // Call the nss_cache getgrent function to dump the group store to a // file. static int getgrent_to_file(FILE *output) { struct group result; char *buffer; size_t buflen = 1024; int errnop; enum nss_status ret; int idx; _nss_cache_setgrent_path(GROUP_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getgrent_r(&result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { fprintf(output, "%s:%s:%d:", result.gr_name, result.gr_passwd, result.gr_gid); // unroll **gr_mem for (idx = 0; result.gr_mem[idx] != NULL; idx++) { fprintf(output, "%s", result.gr_mem[idx]); if (result.gr_mem[idx + 1] != NULL) { fprintf(output, ","); } } fprintf(output, "\n"); } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access group test data\n"); return 1; } } while (ret == NSS_STATUS_SUCCESS || ret == NSS_STATUS_TRYAGAIN); free(buffer); return 0; } #ifndef BSD // getspent_to_file() // Call the nss_cache getspent function to dump the shadow store to a // file. static int getspent_to_file(FILE *output) { struct spwd result; char *buffer; size_t buflen = 1024; int errnop; enum nss_status ret; _nss_cache_setpwent_path(SHADOW_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getspent_r(&result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { fprintf(output, "%s:%s:", result.sp_namp, result.sp_pwdp); // sigh, empty numberical fields are -1 in the struct, // so if necessary convert back to empty fields if (result.sp_lstchg != -1) { fprintf(output, "%ld:", result.sp_lstchg); } else { fprintf(output, ":"); } if (result.sp_min != -1) { fprintf(output, "%ld:", result.sp_min); } else { fprintf(output, ":"); } if (result.sp_max != -1) { fprintf(output, "%ld:", result.sp_max); } else { fprintf(output, ":"); } if (result.sp_warn != -1) { fprintf(output, "%ld:", result.sp_warn); } else { fprintf(output, ":"); } if (result.sp_inact != -1) { fprintf(output, "%ld:", result.sp_inact); } else { fprintf(output, ":"); } if (result.sp_expire != -1) { fprintf(output, "%ld:", result.sp_expire); } else { fprintf(output, ":"); } if (result.sp_flag != -1) { fprintf(output, "%ld", result.sp_flag); } fprintf(output, "\n"); } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { perror("ERROR: failed to access shadow test data"); return 1; } } while (ret == NSS_STATUS_SUCCESS || ret == NSS_STATUS_TRYAGAIN); free(buffer); return 0; } #endif // ifndef BSD // gen_getpwent_data() // // creates a copy of the passwd map as read by nss_cache.c static int gen_getpwent_data(void) { char filename[NSS_CACHE_PATH_LENGTH]; FILE *output; int ret; strncpy(filename, PASSWD_FILE, NSS_CACHE_PATH_LENGTH - 4); strncat(filename, ".out", 4); output = fopen(filename, "w"); if (output == NULL) { fprintf(stderr, "failed to open %s!\n", filename); return 255; } ret = getpwent_to_file(output); fclose(output); return ret; } // gen_getgrent_data() // // creates a copy of the group map as read by nss_cache.c static int gen_getgrent_data(void) { char filename[NSS_CACHE_PATH_LENGTH]; FILE *output; int ret; strncpy(filename, GROUP_FILE, NSS_CACHE_PATH_LENGTH - 4); strncat(filename, ".out", 4); output = fopen(filename, "w"); if (output == NULL) { fprintf(stderr, "failed to open %s!\n", filename); return 255; } ret = getgrent_to_file(output); fclose(output); return ret; } #ifndef BSD // gen_getspent_data() // // creates a copy of the shadow map as read by nss_cache.c static int gen_getspent_data(void) { char filename[NSS_CACHE_PATH_LENGTH]; FILE *output; int ret; strncpy(filename, SHADOW_FILE, NSS_CACHE_PATH_LENGTH - 4); strncat(filename, ".out", 4); output = fopen(filename, "w"); if (output == NULL) { fprintf(stderr, "failed to open %s!\n", filename); return 255; } ret = getspent_to_file(output); fclose(output); return ret; } #endif // ifndef BSD // main() // // generate the passwd, group and shadow files using nss_cache.c functions // which are further checked for correctness by 'make test'. int main(void) { int ret; int failed_tests = 0; ret = gen_getpwent_data(); if (ret != 0) { fprintf(stderr, "Failed to generate password file.\n"); failed_tests = failed_tests + 1; } ret = gen_getgrent_data(); if (ret != 0) { fprintf(stderr, "Failed to generate password file.\n"); failed_tests = failed_tests + 1; } #ifndef BSD ret = gen_getspent_data(); if (ret != 0) { fprintf(stderr, "Failed to generate password file.\n"); failed_tests = failed_tests + 1; } #endif printf("generated all files.\n"); return failed_tests; } libnss-cache-0.15/libnss-cache.spec000066400000000000000000000016361264065746600172270ustar00rootroot00000000000000Summary: nss wrapper library that uses /etc/{passwd,shadow,group}.cache filenames Name: libnss-cache Version: 0.1 Release: 1 License: GPLv2 Group: System Environment/Base Packager: Oliver Hookins URL: http://code.google.com/p/nsscache/ Source: http://nsscache.googlecode.com/files/%{name}-%{version}.tar.gz BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n) BuildArchitectures: i386, x86_64 %description nsscache is a Python library and a commandline frontend to that library that synchronises a local NSS cache against a remote directory service, such as LDAP. %prep %setup -q -n %{name} %build make %install %{__rm} -rf %{buildroot} make LIBDIR="%{buildroot}%{_libdir}" install %clean %{__rm} -rf %{buildroot} %files %defattr(-, root, root, 0755) %{_libdir} %changelog * Tue Jan 06 2009 Oliver Hookins - 0.1-1 - Initial packaging libnss-cache-0.15/lookup.c000066400000000000000000000245061264065746600154760ustar00rootroot00000000000000/* Copyright 2009 Google Inc. * * This 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. * * This 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA */ /* * Perform get*id() and get*nam() lookups given simple lists of * ids or names. Used to test correctness and timings of functions in * nss_cache.c * * There's a fair amount of repeated functions, and I thought briefly about * trying to consolidate them with callbacks or put an if clause inside the * while look (making one longer one for lookup_foo() functions). * * But, each function is slightly different: string or uid? struct group * or struct passwd or struct spwd? And I decided stupid repetition was just * easier and very direct to read. ymmv. * */ #include "nss_cache.h" #include "nss_test.h" // usage() // // print out flags and arguments static void usage(char *program) { fprintf(stderr, "Usage: %s -c nss_function -f filename\n", program); } // getpwnam_wrapper() // // perform a getpwnam() lookup via nss_cache.c directly static int getpwnam_wrapper(char *name) { struct passwd result; char *buffer = NULL; size_t buflen = 1024; int found = 255; int errnop; int ret; _nss_cache_setpwent_path(PASSWD_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getpwnam_r(name, &result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { // printf("found %s, %d\n", result.pw_name, result.pw_uid); found = 0; } if (ret == NSS_STATUS_NOTFOUND) { found = 1; } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 2; } } while (ret == NSS_STATUS_TRYAGAIN); free(buffer); return found; } // getpwuid_wrapper() // // perform a getpwui() lookup via nss_cache.c directly static int getpwuid_wrapper(uid_t uid) { struct passwd result; char *buffer = NULL; size_t buflen = 1024; int found = 255; int errnop; int ret; _nss_cache_setpwent_path(PASSWD_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getpwuid_r(uid, &result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { // printf("found %s, %d\n", result.pw_name, result.pw_uid); found = 0; } if (ret == NSS_STATUS_NOTFOUND) { found = 1; } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 2; } } while (ret == NSS_STATUS_TRYAGAIN); free(buffer); return found; } // getgrnam_wrapper() // // perform a getgrnam() lookup via nss_cache.c directly static int getgrnam_wrapper(char *name) { struct group result; char *buffer = NULL; size_t buflen = 1024; int found = 255; int errnop; int ret; _nss_cache_setgrent_path(GROUP_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getgrnam_r(name, &result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { // printf("found %s, %d\n", result.gr_name, result.gr_gid); found = 0; } if (ret == NSS_STATUS_NOTFOUND) { found = 1; } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 2; } } while (ret == NSS_STATUS_TRYAGAIN); free(buffer); return found; } // getgrgid_wrapper() // // perform a getgrgid() lookup via nss_cache.c directly static int getgrgid_wrapper(gid_t gid) { struct group result; char *buffer = NULL; size_t buflen = 1024; int found = 255; int errnop; int ret; _nss_cache_setgrent_path(GROUP_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getgrgid_r(gid, &result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { // printf("found %s, %d\n", result.gr_name, result.gr_gid); found = 0; } if (ret == NSS_STATUS_NOTFOUND) { found = 1; } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 2; } } while (ret == NSS_STATUS_TRYAGAIN); free(buffer); return found; } #ifndef BSD // getspnam_wrapper() // // perform a getspnam() lookup via nss_cache.c directly static int getspnam_wrapper(char *name) { struct spwd result; char *buffer = NULL; size_t buflen = 1024; int found = 255; int errnop; int ret; _nss_cache_setspent_path(SHADOW_FILE); buffer = malloc(buflen); do { ret = _nss_cache_getspnam_r(name, &result, buffer, buflen, &errnop); if (ret == NSS_STATUS_SUCCESS) { // printf("found %s, %s\n", result.sp_namp, result.sp_pwdp); found = 0; } if (ret == NSS_STATUS_NOTFOUND) { found = 1; } if (ret == NSS_STATUS_TRYAGAIN) { buflen = buflen * 2; buffer = realloc(buffer, buflen); } if (ret == NSS_STATUS_UNAVAIL) { fprintf(stderr, "ERROR: failed to access passwd test data\n"); return 2; } } while (ret == NSS_STATUS_TRYAGAIN); free(buffer); return found; } #endif // ifndef BSD // lookup_getpwnam() // // call getpwnam() from nss_cache.c on each line of a file static int lookup_getpwnam(FILE *input) { int lines = 0; char line[255]; int ret; while (fgets(line, sizeof(line), input)) { lines += 1; // strip trailing newline if (line[strlen(line) - 1] == '\n') { line[strlen(line) - 1] = '\0'; } ret = getpwnam_wrapper(line); if (ret != 0) { break; } } if (ret == 0) { printf("successfully completed %d lookups\n", lines); } else { fprintf(stderr, "failed at line %d: %s\n", lines, line); } return ret; } // lookup_getpwuid() // // call getpwuid() from nss_cache.c on each line of a file static int lookup_getpwuid(FILE *input) { int lines = 0; char line[255]; int ret; while (fgets(line, sizeof(line), input)) { lines += 1; // strip trailing newline if (line[strlen(line) - 1] == '\n') { line[strlen(line) - 1] = '\0'; } ret = getpwuid_wrapper(atoi(line)); if (ret != 0) { break; } } if (ret == 0) { printf("successfully completed %d lookups\n", lines); } else { fprintf(stderr, "failed at line %d: %s\n", lines, line); } return ret; } // lookup_getgrnam() // // call getgrnam() from nss_cache.c on each line of a file static int lookup_getgrnam(FILE *input) { int lines = 0; char line[255]; int ret; while (fgets(line, sizeof(line), input)) { lines += 1; // strip trailing newline if (line[strlen(line) - 1] == '\n') { line[strlen(line) - 1] = '\0'; } ret = getgrnam_wrapper(line); if (ret != 0) { break; } } if (ret == 0) { printf("successfully completed %d lookups\n", lines); } else { fprintf(stderr, "failed at line %d: %s\n", lines, line); } return ret; } // lookup_getgrgid() // // call getgrgid() from nss_cache.c on each line of a file static int lookup_getgrgid(FILE *input) { int lines = 0; char line[255]; int ret; while (fgets(line, sizeof(line), input)) { lines += 1; // strip trailing newline if (line[strlen(line) - 1] == '\n') { line[strlen(line) - 1] = '\0'; } ret = getgrgid_wrapper(atoi(line)); if (ret != 0) { break; } } if (ret == 0) { printf("successfully completed %d lookups\n", lines); } else { fprintf(stderr, "failed at line %d: %s\n", lines, line); } return ret; } #ifndef BSD // lookup_getspnam() // // call getspnam() from nss_cache.c on each line of a file static int lookup_getspnam(FILE *input) { int lines = 0; char line[255]; int ret; while (fgets(line, sizeof(line), input)) { lines += 1; // strip trailing newline if (line[strlen(line) - 1] == '\n') { line[strlen(line) - 1] = '\0'; } ret = getspnam_wrapper(line); if (ret != 0) { break; } } if (ret == 0) { printf("successfully completed %d lookups\n", lines); } else { fprintf(stderr, "failed at line %d: %s\n", lines, line); } return ret; } #endif // ifndef BSD // nss_lookup() // // call the nss lookup wrapper that was set by getopt() static int nss_lookup(char *call, FILE *input) { int ret; if (strncmp(call, "getpwnam", 8) == 0) { ret = lookup_getpwnam(input); } else if (strncmp(call, "getpwuid", 8) == 0) { ret = lookup_getpwuid(input); } else if (strncmp(call, "getgrnam", 8) == 0) { ret = lookup_getgrnam(input); } else if (strncmp(call, "getgrgid", 8) == 0) { ret = lookup_getgrgid(input); #ifndef BSD } else if (strncmp(call, "getspnam", 8) == 0) { ret = lookup_getspnam(input); #endif // ifndef BSD } else { fprintf(stderr, "unknown nss function: %s\n", call); ret = 1; } return ret; } // main() // // parse commandline options to get the function name and input file. // send it through nss_lookup() which will ultimately call the // function on each line in the file and track success. int main(int argc, char **argv) { char *call = NULL; char *filename = NULL; FILE *input = NULL; int ret; int c; while ((c = getopt(argc, argv, "c:f:")) != -1) { switch (c) { case 'c': call = optarg; break; case 'f': filename = optarg; break; } } if (call == NULL || filename == NULL) { usage(argv[0]); return 1; } input = fopen(filename, "r"); if (input == NULL) { fprintf(stderr, "failed to open %s\n", filename); return 255; } ret = nss_lookup(call, input); fclose(input); return ret; } libnss-cache-0.15/nss_cache.c000066400000000000000000000630641264065746600161150ustar00rootroot00000000000000/* Copyright 2009 Google Inc. * * This 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. * * This 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA */ /* An NSS module which adds supports for file maps with a trailing .cache * suffix (/etc/passwd.cache, /etc/group.cache, and /etc/shadow.cache) */ #include "nss_cache.h" #include // Locking implementation: use pthreads. #include static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; #define NSS_CACHE_LOCK() \ do { \ pthread_mutex_lock(&mutex); \ } while (0) #define NSS_CACHE_UNLOCK() \ do { \ pthread_mutex_unlock(&mutex); \ } while (0) static FILE *p_file = NULL; static FILE *g_file = NULL; static char p_filename[NSS_CACHE_PATH_LENGTH] = "/etc/passwd.cache"; static char g_filename[NSS_CACHE_PATH_LENGTH] = "/etc/group.cache"; #ifndef BSD static FILE *s_file = NULL; static char s_filename[NSS_CACHE_PATH_LENGTH] = "/etc/shadow.cache"; #else extern int fgetpwent_r(FILE *, struct passwd *, char *, size_t, struct passwd **); extern int fgetgrent_r(FILE *, struct group *, char *, size_t, struct group **); #endif // ifndef BSD /* Common return code routine for all *ent_r_locked functions. * We need to return TRYAGAIN if the underlying files guy raises ERANGE, * so that our caller knows to try again with a bigger buffer. */ static inline enum nss_status _nss_cache_ent_bad_return_code(int errnoval) { enum nss_status ret; switch (errnoval) { case ERANGE: DEBUG("ERANGE: Try again with a bigger buffer\n"); ret = NSS_STATUS_TRYAGAIN; break; case ENOENT: default: DEBUG("ENOENT or default case: Not found\n"); ret = NSS_STATUS_NOTFOUND; }; return ret; } // // Binary search routines below here // int _nss_cache_bsearch2_compare(const void *key, const void *value) { struct nss_cache_args *args = (struct nss_cache_args *)key; const char *value_text = (const char *)value; // Using strcmp as the generation of the index sorts without // locale awareness. return strcmp(args->lookup_key, value_text); } enum nss_status _nss_cache_bsearch2(struct nss_cache_args *args, int *errnop) { enum nss_cache_match (*lookup)(FILE *, struct nss_cache_args *) = args->lookup_function; FILE *file = NULL; FILE *system_file_stream = NULL; struct stat system_file; struct stat sorted_file; enum nss_status ret = 100; long offset = 0; void *mapped_data = NULL; file = fopen(args->sorted_filename, "r"); if (file == NULL) { DEBUG("error opening %s\n", args->sorted_filename); return NSS_STATUS_UNAVAIL; } // if the sorted file is older than the system file, do not risk stale // data and abort // TODO(vasilios): should be a compile or runtime option if (stat(args->system_filename, &system_file) != 0) { DEBUG("failed to stat %s\n", args->system_filename); fclose(file); return NSS_STATUS_UNAVAIL; } if (fstat(fileno(file), &sorted_file) != 0) { DEBUG("failed to stat %s\n", args->sorted_filename); fclose(file); return NSS_STATUS_UNAVAIL; } if (difftime(system_file.st_mtime, sorted_file.st_mtime) > 0) { DEBUG("%s may be stale, aborting lookup\n", args->sorted_filename); fclose(file); return NSS_STATUS_UNAVAIL; } mapped_data = mmap(NULL, sorted_file.st_size, PROT_READ, MAP_PRIVATE, fileno(file), 0); if (mapped_data == MAP_FAILED) { DEBUG("mmap failed\n"); fclose(file); return NSS_STATUS_UNAVAIL; } const char *data = (const char *)mapped_data; while (*data != '\n') { ++data; } long entry_size = data - (const char *)mapped_data + 1; long entry_count = sorted_file.st_size / entry_size; void *entry = bsearch(args, mapped_data, entry_count, entry_size, &_nss_cache_bsearch2_compare); if (entry != NULL) { const char *entry_text = entry; sscanf(entry_text + strlen(entry_text) + 1, "%ld", &offset); } if (munmap(mapped_data, sorted_file.st_size) == -1) { DEBUG("munmap failed\n"); } fclose(file); if (entry == NULL) { return NSS_STATUS_NOTFOUND; } system_file_stream = fopen(args->system_filename, "r"); if (system_file_stream == NULL) { DEBUG("error opening %s\n", args->system_filename); return NSS_STATUS_UNAVAIL; } if (fseek(system_file_stream, offset, SEEK_SET) != 0) { DEBUG("fseek fail\n"); return NSS_STATUS_UNAVAIL; } switch (lookup(system_file_stream, args)) { case NSS_CACHE_EXACT: ret = NSS_STATUS_SUCCESS; break; case NSS_CACHE_ERROR: if (errno == ERANGE) { // let the caller retry *errnop = errno; ret = _nss_cache_ent_bad_return_code(*errnop); } break; default: ret = NSS_STATUS_UNAVAIL; break; } fclose(system_file_stream); return ret; } // // Routines for passwd map defined below here // // _nss_cache_setpwent_path() // Helper function for testing extern char *_nss_cache_setpwent_path(const char *path) { DEBUG("%s %s\n", "Setting p_filename to", path); return strncpy(p_filename, path, NSS_CACHE_PATH_LENGTH - 1); } // _nss_cache_pwuid_wrap() // Internal wrapper for binary searches, using uid-specific calls. static enum nss_cache_match _nss_cache_pwuid_wrap(FILE *file, struct nss_cache_args *args) { struct passwd *result = args->lookup_result; uid_t *uid = args->lookup_value; if (fgetpwent_r(file, result, args->buffer, args->buflen, &result) == 0) { if (result->pw_uid == *uid) { DEBUG("SUCCESS: found user %d:%s\n", result->pw_uid, result->pw_name); return NSS_CACHE_EXACT; } DEBUG("Failed match at uid %d\n", result->pw_uid); if (result->pw_uid > *uid) { return NSS_CACHE_HIGH; } else { return NSS_CACHE_LOW; } } return NSS_CACHE_ERROR; } // _nss_cache_pwnam_wrap() // Internal wrapper for binary searches, using username-specific calls. static enum nss_cache_match _nss_cache_pwnam_wrap(FILE *file, struct nss_cache_args *args) { struct passwd *result = args->lookup_result; char *name = args->lookup_value; int ret; if (fgetpwent_r(file, result, args->buffer, args->buflen, &result) == 0) { ret = strcoll(result->pw_name, name); if (ret == 0) { DEBUG("SUCCESS: found user %s\n", result->pw_name); return NSS_CACHE_EXACT; } DEBUG("Failed match at name %s\n", result->pw_name); if (ret > 0) { return NSS_CACHE_HIGH; } else { return NSS_CACHE_LOW; } } return NSS_CACHE_ERROR; } // _nss_cache_setpwent_locked() // Internal setup routine static enum nss_status _nss_cache_setpwent_locked(void) { DEBUG("%s %s\n", "Opening", p_filename); p_file = fopen(p_filename, "r"); if (p_file) { return NSS_STATUS_SUCCESS; } else { return NSS_STATUS_UNAVAIL; } } // _nss_cache_setpwent() // Called by NSS to open the passwd file // 'stayopen' parameter is ignored. enum nss_status _nss_cache_setpwent(int stayopen) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_setpwent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_endpwent_locked() // Internal close routine static enum nss_status _nss_cache_endpwent_locked(void) { DEBUG("Closing passwd.cache\n"); if (p_file) { fclose(p_file); p_file = NULL; } return NSS_STATUS_SUCCESS; } // _nss_cache_endpwent() // Called by NSS to close the passwd file enum nss_status _nss_cache_endpwent(void) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_endpwent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getpwent_r_locked() // Called internally to return the next entry from the passwd file static enum nss_status _nss_cache_getpwent_r_locked(struct passwd *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret = NSS_STATUS_SUCCESS; if (p_file == NULL) { DEBUG("p_file == NULL, going to setpwent\n"); ret = _nss_cache_setpwent_locked(); } if (ret == NSS_STATUS_SUCCESS) { if (fgetpwent_r(p_file, result, buffer, buflen, &result) == 0) { DEBUG("Returning user %d:%s\n", result->pw_uid, result->pw_name); } else { if (errno == ENOENT) { errno = 0; } *errnop = errno; ret = _nss_cache_ent_bad_return_code(*errnop); } } return ret; } // _nss_cache_getpwent_r() // Called by NSS to look up next entry in passwd file enum nss_status _nss_cache_getpwent_r(struct passwd *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_getpwent_r_locked(result, buffer, buflen, errnop); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getpwuid_r() // Find a user account by uid enum nss_status _nss_cache_getpwuid_r(uid_t uid, struct passwd *result, char *buffer, size_t buflen, int *errnop) { char filename[NSS_CACHE_PATH_LENGTH]; struct nss_cache_args args; enum nss_status ret; strncpy(filename, p_filename, NSS_CACHE_PATH_LENGTH - 1); if (strlen(filename) > NSS_CACHE_PATH_LENGTH - 7) { DEBUG("filename too long\n"); return NSS_STATUS_UNAVAIL; } strncat(filename, ".ixuid", 6); args.sorted_filename = filename; args.system_filename = p_filename; args.lookup_function = _nss_cache_pwuid_wrap; args.lookup_value = &uid; args.lookup_result = result; args.buffer = buffer; args.buflen = buflen; char uid_text[11]; snprintf(uid_text, sizeof(uid_text), "%d", uid); args.lookup_key = uid_text; args.lookup_key_length = strlen(uid_text); DEBUG("Binary search for uid %d\n", uid); NSS_CACHE_LOCK(); ret = _nss_cache_bsearch2(&args, errnop); if (ret == NSS_STATUS_UNAVAIL) { DEBUG("Binary search failed, falling back to full linear search\n"); ret = _nss_cache_setpwent_locked(); if (ret == NSS_STATUS_SUCCESS) { while ((ret = _nss_cache_getpwent_r_locked( result, buffer, buflen, errnop)) == NSS_STATUS_SUCCESS) { if (result->pw_uid == uid) break; } } } _nss_cache_endpwent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getpwnam_r() // Find a user account by name enum nss_status _nss_cache_getpwnam_r(const char *name, struct passwd *result, char *buffer, size_t buflen, int *errnop) { char *pw_name; char filename[NSS_CACHE_PATH_LENGTH]; struct nss_cache_args args; enum nss_status ret; NSS_CACHE_LOCK(); // name is a const char, we need a non-const copy pw_name = malloc(strlen(name) + 1); if (pw_name == NULL) { DEBUG("malloc error\n"); return NSS_STATUS_UNAVAIL; } strncpy(pw_name, name, strlen(name) + 1); strncpy(filename, p_filename, NSS_CACHE_PATH_LENGTH - 1); if (strlen(filename) > NSS_CACHE_PATH_LENGTH - 8) { DEBUG("filename too long\n"); free(pw_name); return NSS_STATUS_UNAVAIL; } strncat(filename, ".ixname", 7); args.sorted_filename = filename; args.system_filename = p_filename; args.lookup_function = _nss_cache_pwnam_wrap; args.lookup_value = pw_name; args.lookup_result = result; args.buffer = buffer; args.buflen = buflen; args.lookup_key = pw_name; args.lookup_key_length = strlen(pw_name); DEBUG("Binary search for user %s\n", pw_name); ret = _nss_cache_bsearch2(&args, errnop); if (ret == NSS_STATUS_UNAVAIL) { DEBUG("Binary search failed, falling back to full linear search\n"); ret = _nss_cache_setpwent_locked(); if (ret == NSS_STATUS_SUCCESS) { while ((ret = _nss_cache_getpwent_r_locked( result, buffer, buflen, errnop)) == NSS_STATUS_SUCCESS) { if (!strcmp(result->pw_name, name)) break; } } } free(pw_name); _nss_cache_endpwent_locked(); NSS_CACHE_UNLOCK(); return ret; } // // Routines for group map defined here. // // _nss_cache_setgrent_path() // Helper function for testing extern char *_nss_cache_setgrent_path(const char *path) { DEBUG("%s %s\n", "Setting g_filename to", path); return strncpy(g_filename, path, NSS_CACHE_PATH_LENGTH - 1); } // _nss_cache_setgrent_locked() // Internal setup routine static enum nss_status _nss_cache_setgrent_locked(void) { DEBUG("%s %s\n", "Opening", g_filename); g_file = fopen(g_filename, "r"); if (g_file) { return NSS_STATUS_SUCCESS; } else { return NSS_STATUS_UNAVAIL; } } // _nss_cache_grgid_wrap() // Internal wrapper for binary searches, using gid-specific calls. static enum nss_cache_match _nss_cache_grgid_wrap(FILE *file, struct nss_cache_args *args) { struct group *result = args->lookup_result; gid_t *gid = args->lookup_value; if (fgetgrent_r(file, result, args->buffer, args->buflen, &result) == 0) { if (result->gr_gid == *gid) { DEBUG("SUCCESS: found group %d:%s\n", result->gr_gid, result->gr_name); return NSS_CACHE_EXACT; } DEBUG("Failed match at gid %d\n", result->gr_gid); if (result->gr_gid > *gid) { return NSS_CACHE_HIGH; } else { return NSS_CACHE_LOW; } } return NSS_CACHE_ERROR; } // _nss_cache_grnam_wrap() // Internal wrapper for binary searches, using groupname-specific calls. static enum nss_cache_match _nss_cache_grnam_wrap(FILE *file, struct nss_cache_args *args) { struct group *result = args->lookup_result; char *name = args->lookup_value; int ret; if (fgetgrent_r(file, result, args->buffer, args->buflen, &result) == 0) { ret = strcoll(result->gr_name, name); if (ret == 0) { DEBUG("SUCCESS: found group %s\n", result->gr_name); return NSS_CACHE_EXACT; } DEBUG("Failed match at name %s\n", result->gr_name); if (ret > 0) { return NSS_CACHE_HIGH; } else { return NSS_CACHE_LOW; } } return NSS_CACHE_ERROR; } // _nss_cache_setgrent() // Called by NSS to open the group file // 'stayopen' parameter is ignored. enum nss_status _nss_cache_setgrent(int stayopen) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_setgrent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_endgrent_locked() // Internal close routine static enum nss_status _nss_cache_endgrent_locked(void) { DEBUG("Closing group.cache\n"); if (g_file) { fclose(g_file); g_file = NULL; } return NSS_STATUS_SUCCESS; } // _nss_cache_endgrent() // Called by NSS to close the group file enum nss_status _nss_cache_endgrent(void) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_endgrent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getgrent_r_locked() // Called internally to return the next entry from the group file static enum nss_status _nss_cache_getgrent_r_locked(struct group *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret = NSS_STATUS_SUCCESS; if (g_file == NULL) { DEBUG("g_file == NULL, going to setgrent\n"); ret = _nss_cache_setgrent_locked(); } if (ret == NSS_STATUS_SUCCESS) { fpos_t position; fgetpos(g_file, &position); if (fgetgrent_r(g_file, result, buffer, buflen, &result) == 0) { DEBUG("Returning group %s (%d)\n", result->gr_name, result->gr_gid); } else { /* Rewind back to where we were just before, otherwise the data read * into the buffer is probably going to be lost because there's no * guarantee that the caller is going to have preserved the line we * just read. Note that glibc's nss/nss_files/files-XXX.c does * something similar in CONCAT(_nss_files_get,ENTNAME_r) (around * line 242 in glibc 2.4 sources). */ if (errno == ENOENT) { errno = 0; } else { fsetpos(g_file, &position); } *errnop = errno; ret = _nss_cache_ent_bad_return_code(*errnop); } } return ret; } // _nss_cache_getgrent_r() // Called by NSS to look up next entry in group file enum nss_status _nss_cache_getgrent_r(struct group *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_getgrent_r_locked(result, buffer, buflen, errnop); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getgrgid_r() // Find a group by gid enum nss_status _nss_cache_getgrgid_r(gid_t gid, struct group *result, char *buffer, size_t buflen, int *errnop) { char filename[NSS_CACHE_PATH_LENGTH]; struct nss_cache_args args; enum nss_status ret; // Since we binary search over the groups using the user provided // buffer, we do not start searching before we have a buffer that // is big enough to have a high chance of succeeding. if (buflen < (1 << 20)) { *errnop = ERANGE; return NSS_STATUS_TRYAGAIN; } strncpy(filename, g_filename, NSS_CACHE_PATH_LENGTH - 1); if (strlen(filename) > NSS_CACHE_PATH_LENGTH - 7) { DEBUG("filename too long\n"); return NSS_STATUS_UNAVAIL; } strncat(filename, ".ixgid", 6); args.sorted_filename = filename; args.system_filename = g_filename; args.lookup_function = _nss_cache_grgid_wrap; args.lookup_value = &gid; args.lookup_result = result; args.buffer = buffer; args.buflen = buflen; char gid_text[11]; snprintf(gid_text, sizeof(gid_text), "%d", gid); args.lookup_key = gid_text; args.lookup_key_length = strlen(gid_text); DEBUG("Binary search for gid %d\n", gid); NSS_CACHE_LOCK(); ret = _nss_cache_bsearch2(&args, errnop); if (ret == NSS_STATUS_UNAVAIL) { DEBUG("Binary search failed, falling back to full linear search\n"); ret = _nss_cache_setgrent_locked(); if (ret == NSS_STATUS_SUCCESS) { while ((ret = _nss_cache_getgrent_r_locked( result, buffer, buflen, errnop)) == NSS_STATUS_SUCCESS) { if (result->gr_gid == gid) break; } } } _nss_cache_endgrent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getgrnam_r() // Find a group by name enum nss_status _nss_cache_getgrnam_r(const char *name, struct group *result, char *buffer, size_t buflen, int *errnop) { char *gr_name; char filename[NSS_CACHE_PATH_LENGTH]; struct nss_cache_args args; enum nss_status ret; NSS_CACHE_LOCK(); // name is a const char, we need a non-const copy gr_name = malloc(strlen(name) + 1); if (gr_name == NULL) { DEBUG("malloc error\n"); return NSS_STATUS_UNAVAIL; } strncpy(gr_name, name, strlen(name) + 1); strncpy(filename, g_filename, NSS_CACHE_PATH_LENGTH - 1); if (strlen(filename) > NSS_CACHE_PATH_LENGTH - 8) { DEBUG("filename too long\n"); free(gr_name); return NSS_STATUS_UNAVAIL; } strncat(filename, ".ixname", 7); args.sorted_filename = filename; args.system_filename = g_filename; args.lookup_function = _nss_cache_grnam_wrap; args.lookup_value = gr_name; args.lookup_result = result; args.buffer = buffer; args.buflen = buflen; args.lookup_key = gr_name; args.lookup_key_length = strlen(gr_name); DEBUG("Binary search for group %s\n", gr_name); ret = _nss_cache_bsearch2(&args, errnop); if (ret == NSS_STATUS_UNAVAIL) { DEBUG("Binary search failed, falling back to full linear search\n"); ret = _nss_cache_setgrent_locked(); if (ret == NSS_STATUS_SUCCESS) { while ((ret = _nss_cache_getgrent_r_locked( result, buffer, buflen, errnop)) == NSS_STATUS_SUCCESS) { if (!strcmp(result->gr_name, name)) break; } } } free(gr_name); _nss_cache_endgrent_locked(); NSS_CACHE_UNLOCK(); return ret; } // // Routines for shadow map defined here. // #ifndef BSD // _nss_cache_setspent_path() // Helper function for testing extern char *_nss_cache_setspent_path(const char *path) { DEBUG("%s %s\n", "Setting s_filename to", path); return strncpy(s_filename, path, NSS_CACHE_PATH_LENGTH - 1); } // _nss_cache_setspent_locked() // Internal setup routine static enum nss_status _nss_cache_setspent_locked(void) { DEBUG("%s %s\n", "Opening", g_filename); s_file = fopen(s_filename, "r"); if (s_file) { return NSS_STATUS_SUCCESS; } else { return NSS_STATUS_UNAVAIL; } } // _nss_cache_spnam_wrap() // Internal wrapper for binary searches, using shadow-specific calls. static enum nss_cache_match _nss_cache_spnam_wrap(FILE *file, struct nss_cache_args *args) { struct spwd *result = args->lookup_result; char *name = args->lookup_value; int ret; if (fgetspent_r(file, result, args->buffer, args->buflen, &result) == 0) { ret = strcoll(result->sp_namp, name); if (ret == 0) { DEBUG("SUCCESS: found user %s\n", result->sp_namp); return NSS_CACHE_EXACT; } DEBUG("Failed match at name %s\n", result->sp_namp); if (ret > 0) { return NSS_CACHE_HIGH; } else { return NSS_CACHE_LOW; } } return NSS_CACHE_ERROR; } // _nss_cache_setspent() // Called by NSS to open the shadow file // 'stayopen' parameter is ignored. enum nss_status _nss_cache_setspent(int stayopen) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_setspent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_endspent_locked() // Internal close routine static enum nss_status _nss_cache_endspent_locked(void) { DEBUG("Closing shadow.cache\n"); if (s_file) { fclose(s_file); s_file = NULL; } return NSS_STATUS_SUCCESS; } // _nss_cache_endspent() // Called by NSS to close the shadow file enum nss_status _nss_cache_endspent(void) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_endspent_locked(); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getspent_r_locked() // Called internally to return the next entry from the shadow file static enum nss_status _nss_cache_getspent_r_locked(struct spwd *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret = NSS_STATUS_SUCCESS; if (s_file == NULL) { DEBUG("s_file == NULL, going to setspent\n"); ret = _nss_cache_setspent_locked(); } if (ret == NSS_STATUS_SUCCESS) { if (fgetspent_r(s_file, result, buffer, buflen, &result) == 0) { DEBUG("Returning shadow entry %s\n", result->sp_namp); } else { if (errno == ENOENT) { errno = 0; } *errnop = errno; ret = _nss_cache_ent_bad_return_code(*errnop); } } return ret; } // _nss_cache_getspent_r() // Called by NSS to look up next entry in the shadow file enum nss_status _nss_cache_getspent_r(struct spwd *result, char *buffer, size_t buflen, int *errnop) { enum nss_status ret; NSS_CACHE_LOCK(); ret = _nss_cache_getspent_r_locked(result, buffer, buflen, errnop); NSS_CACHE_UNLOCK(); return ret; } // _nss_cache_getspnam_r() // Find a user by name enum nss_status _nss_cache_getspnam_r(const char *name, struct spwd *result, char *buffer, size_t buflen, int *errnop) { char *sp_namp; char filename[NSS_CACHE_PATH_LENGTH]; struct nss_cache_args args; enum nss_status ret; NSS_CACHE_LOCK(); // name is a const char, we need a non-const copy sp_namp = malloc(strlen(name) + 1); if (sp_namp == NULL) { DEBUG("malloc error\n"); return NSS_STATUS_UNAVAIL; } strncpy(sp_namp, name, strlen(name) + 1); strncpy(filename, s_filename, NSS_CACHE_PATH_LENGTH - 1); if (strlen(filename) > NSS_CACHE_PATH_LENGTH - 8) { DEBUG("filename too long\n"); free(sp_namp); return NSS_STATUS_UNAVAIL; } strncat(filename, ".ixname", 7); args.sorted_filename = filename; args.system_filename = s_filename; args.lookup_function = _nss_cache_spnam_wrap; args.lookup_value = sp_namp; args.lookup_result = result; args.buffer = buffer; args.buflen = buflen; args.lookup_key = sp_namp; args.lookup_key_length = strlen(sp_namp); DEBUG("Binary search for user %s\n", sp_namp); ret = _nss_cache_bsearch2(&args, errnop); if (ret == NSS_STATUS_UNAVAIL) { DEBUG("Binary search failed, falling back to full linear search\n"); ret = _nss_cache_setspent_locked(); if (ret == NSS_STATUS_SUCCESS) { while ((ret = _nss_cache_getspent_r_locked( result, buffer, buflen, errnop)) == NSS_STATUS_SUCCESS) { if (!strcmp(result->sp_namp, name)) break; } } } free(sp_namp); _nss_cache_endspent_locked(); NSS_CACHE_UNLOCK(); return ret; } #else #include "bsdnss.c" #endif // ifndef BSD libnss-cache-0.15/nss_cache.h000066400000000000000000000042631264065746600161160ustar00rootroot00000000000000/* Copyright 2009 Google Inc. * * This 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. * * This 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef BSD #include #endif // ifndef BSD #ifndef NSS_CACHE_H #define NSS_CACHE_H #ifdef DEBUG #undef DEBUG #define DEBUG(fmt, args...) \ do { \ fprintf(stderr, fmt, ##args); \ } while (0) #else #define DEBUG(fmt, ...) \ do { \ } while (0) #endif /* DEBUG */ #define NSS_CACHE_PATH_LENGTH 255 extern char *_nss_cache_setpwent_path(const char *path); extern char *_nss_cache_setgrent_path(const char *path); #ifndef BSD extern char *_nss_cache_setspent_path(const char *path); #endif // ifndef BSD enum nss_cache_match { NSS_CACHE_EXACT = 0, NSS_CACHE_HIGH = 1, NSS_CACHE_LOW = 2, NSS_CACHE_ERROR = 3, }; struct nss_cache_args { char *system_filename; char *sorted_filename; void *lookup_function; void *lookup_value; void *lookup_result; char *buffer; size_t buflen; char *lookup_key; size_t lookup_key_length; }; #endif /* NSS_CACHE_H */ libnss-cache-0.15/nss_test.h000066400000000000000000000055341264065746600160340ustar00rootroot00000000000000/* Copyright 2009 Google Inc. * * This 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. * * This 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 this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA */ #include #include #include #include #include #ifndef BSD #include #endif // ifndef BSD #ifndef NSS_TEST_H #define NSS_TEST_H const char *PASSWD_FILE = ".testdata/passwd.cache"; const char *GROUP_FILE = ".testdata/group.cache"; #ifndef BSD const char *SHADOW_FILE = ".testdata/shadow.cache"; #endif // ifndef BSD extern enum nss_status _nss_cache_getpwent_r(struct passwd *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getpwnam_r(const char *name, struct passwd *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getpwuid_r(uid_t uid, struct passwd *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getgrent_r(struct group *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getgrnam_r(const char *name, struct group *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getgrgid_r(gid_t gid, struct group *result, char *buffer, size_t buflen, int *errnop); #ifndef BSD extern enum nss_status _nss_cache_getspnam_r(const char *name, struct spwd *result, char *buffer, size_t buflen, int *errnop); extern enum nss_status _nss_cache_getspent_r(struct spwd *result, char *buffer, size_t buflen, int *errnop); extern char *_nss_cache_setpwent_path(const char *path); #endif // ifndef BSD #endif /* NSS_TEST_H */ libnss-cache-0.15/test/000077500000000000000000000000001264065746600147715ustar00rootroot00000000000000libnss-cache-0.15/test/last_pw_errno_test.c000066400000000000000000000005001264065746600210450ustar00rootroot00000000000000#include #include #include #include int main(int argc, char **argv) { setpwent(); for (;;) { errno = 0; struct passwd *pw = getpwent(); if (!pw) { if (errno != 0) printf("ERRNO: %u %m\n", errno); break; } } endpwent(); return 0; } libnss-cache-0.15/version000066400000000000000000000000051264065746600154150ustar00rootroot000000000000000.15