diff options
Diffstat (limited to 'hesiod')
| -rw-r--r-- | hesiod/Makefile | 49 | ||||
| -rw-r--r-- | hesiod/hesiod.c | 470 | ||||
| -rw-r--r-- | hesiod/hesiod.h | 73 | ||||
| -rw-r--r-- | hesiod/hesiod_p.h | 41 | ||||
| -rw-r--r-- | hesiod/libnss_hesiod.map | 12 | ||||
| -rw-r--r-- | hesiod/nss_hesiod/hesiod-grp.c | 150 | ||||
| -rw-r--r-- | hesiod/nss_hesiod/hesiod-pwd.c | 150 | ||||
| -rw-r--r-- | hesiod/nss_hesiod/hesiod-service.c | 165 |
8 files changed, 1110 insertions, 0 deletions
diff --git a/hesiod/Makefile b/hesiod/Makefile new file mode 100644 index 0000000000..8d0363b50d --- /dev/null +++ b/hesiod/Makefile @@ -0,0 +1,49 @@ +# Copyright (C) 1997 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 Library General Public License as +# published by the Free Software Foundation; either version 2 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 +# Library General Public License for more details. + +# You should have received a copy of the GNU Library General Public +# License along with the GNU C Library; see the file COPYING.LIB. If not, +# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. + +# +# Sub-makefile for hesiod portion of the library. +# +subdir := hesiod + +distribute := hesiod.h hesiod_p.h + +extra-libs := libnss_hesiod +extra-libs-others = $(extra-libs) + +subdir-dirs = nss_hesiod +vpath %.c nss_hesiod + +libnss_hesiod-routines := hesiod hesiod-grp hesiod-pwd hesiod-service +libnss_hesiod-map := libnss_hesiod.map +ifneq ($(build-static-nss),yes) +libnss_hesiod-inhibit-o = $(filter-out .os,$(object-suffixes)) +endif + +include ../Rules + +CFLAGS-hesiod.c = -DSYSCONFDIR='"$(sysconfdir)"' + +# Depend on libc.so so a DT_NEEDED is generated in the shared objects. +# This ensures they will load libc.so for needed symbols if loaded by +# a statically-linked program that hasn't already loaded it. +# The Hesiod NSS modules also needs the resolver and some help from +# the file service. +$(objpfx)libnss_hesiod.so: $(common-objpfx)resolv/libresolv.so \ + $(common-objpfx)nss/libnss_files.so \ + $(common-objpfx)libc.so diff --git a/hesiod/hesiod.c b/hesiod/hesiod.c new file mode 100644 index 0000000000..8e95dfb393 --- /dev/null +++ b/hesiod/hesiod.c @@ -0,0 +1,470 @@ +/* Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* Copyright 1996 by the Massachusetts Institute of Technology. + * + * Permission to use, copy, modify, and distribute this + * software and its documentation for any purpose and without + * fee is hereby granted, provided that the above copyright + * notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting + * documentation, and that the name of M.I.T. not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * M.I.T. makes no representations about the suitability of + * this software for any purpose. It is provided "as is" + * without express or implied warranty. + */ + +/* This file is part of the hesiod library. It implements the core + * portion of the hesiod resolver. + * + * This file is loosely based on an interim version of hesiod.c from + * the BIND IRS library, which was in turn based on an earlier version + * of this file. Extensive changes have been made on each step of the + * path. + * + * This implementation is not truly thread-safe at the moment because + * it uses res_send() and accesses _res. + */ + +static const char rcsid[] = "$Id$"; + +#include <sys/types.h> +#include <netinet/in.h> +#include <arpa/nameser.h> +#include <errno.h> +#include <netdb.h> +#include <resolv.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include "hesiod.h" +#include "hesiod_p.h" + +/* A few operating systems don't define these. */ +#ifndef C_HS +#define C_HS 4 +#endif +#ifndef T_TXT +#define T_TXT 16 +#endif + +static int read_config_file(struct hesiod_p *ctx, const char *filename); +static char **get_txt_records(struct hesiod_p *ctx, int class, + const char *name); +static int cistrcmp(const char *s1, const char *s2); + +/* This function is called to initialize a hesiod_p. */ +int hesiod_init(void **context) +{ + struct hesiod_p *ctx; + const char *p, *configname; + + ctx = malloc(sizeof(struct hesiod_p)); + if (ctx) + { + *context = ctx; + configname = __secure_getenv("HESIOD_CONFIG"); + if (!configname) + configname = SYSCONFDIR "/hesiod.conf"; + if (read_config_file(ctx, configname) >= 0) + { + /* The default rhs can be overridden by an environment variable. */ + p = __secure_getenv("HES_DOMAIN"); + if (p) + { + if (ctx->rhs) + free(ctx->rhs); + ctx->rhs = malloc(strlen(p) + 2); + if (ctx->rhs) + { + *ctx->rhs = '.'; + strcpy(ctx->rhs + 1, (*p == '.') ? p + 1 : p); + return 0; + } + else + __set_errno (ENOMEM); + } + else + return 0; + } + } + else + __set_errno (ENOMEM); + + if (ctx->lhs) + free(ctx->lhs); + if (ctx->rhs) + free(ctx->rhs); + if (ctx) + free(ctx); + return -1; +} + +/* This function deallocates the hesiod_p. */ +void hesiod_end(void *context) +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + + free(ctx->rhs); + if (ctx->lhs) + free(ctx->lhs); + free(ctx); +} + +/* This function takes a hesiod (name, type) and returns a DNS + * name which is to be resolved. + */ +char *hesiod_to_bind(void *context, const char *name, const char *type) +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + char bindname[MAXDNAME], *p, *ret, **rhs_list = NULL; + const char *rhs; + int len; + + strcpy(bindname, name); + + /* Find the right right hand side to use, possibly truncating bindname. */ + p = strchr(bindname, '@'); + if (p) + { + *p++ = 0; + if (strchr(p, '.')) + rhs = name + (p - bindname); + else + { + rhs_list = hesiod_resolve(context, p, "rhs-extension"); + if (rhs_list) + rhs = *rhs_list; + else + { + __set_errno (ENOENT); + return NULL; + } + } + } else + rhs = ctx->rhs; + + /* See if we have enough room. */ + len = strlen(bindname) + 1 + strlen(type); + if (ctx->lhs) + len += strlen(ctx->lhs) + ((ctx->lhs[0] != '.') ? 1 : 0); + len += strlen(rhs) + ((rhs[0] != '.') ? 1 : 0); + if (len > sizeof(bindname) - 1) + { + if (rhs_list) + hesiod_free_list(context, rhs_list); + __set_errno (EMSGSIZE); + return NULL; + } + + /* Put together the rest of the domain. */ + strcat(bindname, "."); + strcat(bindname, type); + if (ctx->lhs) + { + if (ctx->lhs[0] != '.') + strcat(bindname, "."); + strcat(bindname, ctx->lhs); + } + if (rhs[0] != '.') + strcat(bindname, "."); + strcat(bindname, rhs); + + /* rhs_list is no longer needed, since we're done with rhs. */ + if (rhs_list) + hesiod_free_list(context, rhs_list); + + /* Make a copy of the result and return it to the caller. */ + ret = malloc(strlen(bindname) + 1); + if (!ret) + { + __set_errno (ENOMEM); + return NULL; + } + strcpy(ret, bindname); + return ret; +} + +/* This is the core function. Given a hesiod name and type, it + * returns an array of strings returned by the resolver. + */ +char **hesiod_resolve(void *context, const char *name, const char *type) +{ + struct hesiod_p *ctx = (struct hesiod_p *) context; + char *bindname, **retvec; + + bindname = hesiod_to_bind(context, name, type); + if (!bindname) + return NULL; + + retvec = get_txt_records(ctx, ctx->classes[0], bindname); + if (retvec == NULL && errno == ENOENT && ctx->classes[1]) + retvec = get_txt_records(ctx, ctx->classes[1], bindname); + + free(bindname); + return retvec; +} + +void hesiod_free_list(void *context, char **list) +{ + char **p; + + for (p = list; *p; p++) + free(*p); + free(list); +} + +/* This function parses the /etc/hesiod.conf file. Returns 0 on success, + * -1 on failure. On failure, it might leave values in ctx->lhs or + * ctx->rhs which need to be freed by the caller. */ +static int read_config_file(struct hesiod_p *ctx, const char *filename) +{ + char *key, *data, *p, **which; + char buf[MAXDNAME + 7]; + int n; + FILE *fp; + + /* Set default query classes. */ + ctx->classes[0] = C_IN; + ctx->classes[1] = C_HS; + + /* Try to open the configuration file. */ + fp = fopen(filename, "r"); + if (!fp) + { + /* Use compiled in default domain names. */ + ctx->lhs = malloc(strlen(DEF_LHS) + 1); + ctx->rhs = malloc(strlen(DEF_RHS) + 1); + if (ctx->lhs && ctx->rhs) + { + strcpy(ctx->lhs, DEF_LHS); + strcpy(ctx->rhs, DEF_RHS); + return 0; + } + else + { + __set_errno (ENOMEM); + return -1; + } + } + + ctx->lhs = NULL; + ctx->rhs = NULL; + while (fgets(buf, sizeof(buf), fp) != NULL) + { + p = buf; + if (*p == '#' || *p == '\n' || *p == '\r') + continue; + while(*p == ' ' || *p == '\t') + p++; + key = p; + while(*p != ' ' && *p != '\t' && *p != '=') + p++; + *p++ = 0; + + while(isspace(*p) || *p == '=') + p++; + data = p; + while(!isspace(*p)) + p++; + *p = 0; + + if (cistrcmp(key, "lhs") == 0 || cistrcmp(key, "rhs") == 0) + { + which = (strcmp(key, "lhs") == 0) ? &ctx->lhs : &ctx->rhs; + *which = malloc(strlen(data) + 1); + if (!*which) + { + __set_errno (ENOMEM); + return -1; + } + strcpy(*which, data); + } + else if (cistrcmp(key, "classes") == 0) + { + n = 0; + while (*data && n < 2) + { + p = data; + while (*p && *p != ',') + p++; + if (*p) + *p++ = 0; + if (cistrcmp(data, "IN") == 0) + ctx->classes[n++] = C_IN; + else if (cistrcmp(data, "HS") == 0) + ctx->classes[n++] = C_HS; + data = p; + } + while (n < 2) + ctx->classes[n++] = 0; + } + } + fclose(fp); + + if (!ctx->rhs || ctx->classes[0] == 0 || ctx->classes[0] == ctx->classes[1]) + { + __set_errno (ENOEXEC); + return -1; + } + + return 0; +} + +/* Given a DNS class and a DNS name, do a lookup for TXT records, and + * return a list of them. + */ +static char **get_txt_records(struct hesiod_p *ctx, int qclass, + const char *name) +{ + HEADER *hp; + unsigned char qbuf[PACKETSZ], abuf[MAX_HESRESP], *p, *eom, *eor; + char *dst, **list; + int ancount, qdcount, i, j, n, skip, type, class, len; + + /* Make sure the resolver is initialized. */ + if ((_res.options & RES_INIT) == 0 && res_init() == -1) + return NULL; + + /* Construct the query. */ + n = res_mkquery(QUERY, name, qclass, T_TXT, NULL, 0, + NULL, qbuf, PACKETSZ); + if (n < 0) + return NULL; + + /* Send the query. */ + n = res_send(qbuf, n, abuf, MAX_HESRESP); + if (n < 0) + { + __set_errno (ECONNREFUSED); + return NULL; + } + + /* Parse the header of the result. */ + hp = (HEADER *) abuf; + ancount = ntohs(hp->ancount); + qdcount = ntohs(hp->qdcount); + p = abuf + sizeof(HEADER); + eom = abuf + n; + + /* Skip questions, trying to get to the answer section which follows. */ + for (i = 0; i < qdcount; i++) + { + skip = dn_skipname(p, eom); + if (skip < 0 || p + skip + QFIXEDSZ > eom) + { + __set_errno (EMSGSIZE); + return NULL; + } + p += skip + QFIXEDSZ; + } + + /* Allocate space for the text record answers. */ + list = malloc((ancount + 1) * sizeof(char *)); + if (!list) + { + __set_errno (ENOMEM); + return NULL; + } + + /* Parse the answers. */ + j = 0; + for (i = 0; i < ancount; i++) + { + /* Parse the header of this answer. */ + skip = dn_skipname(p, eom); + if (skip < 0 || p + skip + 10 > eom) + break; + type = p[skip + 0] << 8 | p[skip + 1]; + class = p[skip + 2] << 8 | p[skip + 3]; + len = p[skip + 8] << 8 | p[skip + 9]; + p += skip + 10; + if (p + len > eom) + { + __set_errno (EMSGSIZE); + break; + } + + /* Skip entries of the wrong class and type. */ + if (class != qclass || type != T_TXT) + { + p += len; + continue; + } + + /* Allocate space for this answer. */ + list[j] = malloc(len); + if (!list[j]) + { + __set_errno (ENOMEM); + break; + } + dst = list[j++]; + + /* Copy answer data into the allocated area. */ + eor = p + len; + while (p < eor) + { + n = (unsigned char) *p++; + if (p + n > eor) + { + __set_errno (EMSGSIZE); + break; + } + memcpy(dst, p, n); + p += n; + dst += n; + } + if (p < eor) + { + __set_errno (EMSGSIZE); + break; + } + *dst = 0; + } + + /* If we didn't terminate the loop normally, something went wrong. */ + if (i < ancount) + { + for (i = 0; i < j; i++) + free(list[i]); + free(list); + return NULL; + } + + if (j == 0) + { + __set_errno (ENOENT); + free(list); + return NULL; + } + + list[j] = NULL; + return list; +} + +static int cistrcmp(const char *s1, const char *s2) +{ + while (*s1 && tolower(*s1) == tolower(*s2)) + { + s1++; + s2++; + } + return tolower(*s1) - tolower(*s2); +} diff --git a/hesiod/hesiod.h b/hesiod/hesiod.h new file mode 100644 index 0000000000..9c3d323811 --- /dev/null +++ b/hesiod/hesiod.h @@ -0,0 +1,73 @@ +/* $Id$ */ + +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#ifndef HESIOD__INCLUDED +#define HESIOD__INCLUDED + +#include <sys/types.h> +#include <pwd.h> +#include <netdb.h> + +/* Application-visible define to signal that we have the new interfaces. */ +#define HESIOD_INTERFACES + +struct hesiod_postoffice { + char *hesiod_po_type; + char *hesiod_po_host; + char *hesiod_po_name; +}; + +int hesiod_init(void **context); +void hesiod_end(void *context); +char *hesiod_to_bind(void *context, const char *name, const char *type); +char **hesiod_resolve(void *context, const char *name, const char *type); +void hesiod_free_list(void *context, char **list); +struct passwd *hesiod_getpwnam(void *context, const char *name); +struct passwd *hesiod_getpwuid(void *context, uid_t uid); +void hesiod_free_passwd(void *context, struct passwd *pw); +struct servent *hesiod_getservbyname(void *context, const char *name, + const char *proto); +void hesiod_free_servent(void *context, struct servent *serv); +struct hesiod_postoffice *hesiod_getmailhost(void *context, const char *user); +void hesiod_free_postoffice(void *context, struct hesiod_postoffice *po); + +/* Compatibility stuff. */ + +#define HES_ER_UNINIT -1 /* uninitialized */ +#define HES_ER_OK 0 /* no error */ +#define HES_ER_NOTFOUND 1 /* Hesiod name not found by server */ +#define HES_ER_CONFIG 2 /* local problem (no config file?) */ +#define HES_ER_NET 3 /* network problem */ + +struct hes_postoffice { + char *po_type; + char *po_host; + char *po_name; +}; + +int hes_init(void); +char *hes_to_bind(const char *name, const char *type); +char **hes_resolve(const char *name, const char *type); +int hes_error(void); +struct passwd *hes_getpwnam(const char *name); +struct passwd *hes_getpwuid(uid_t uid); +struct servent *hes_getservbyname(const char *name, const char *proto); +struct hes_postoffice *hes_getmailhost(const char *name); + +#endif diff --git a/hesiod/hesiod_p.h b/hesiod/hesiod_p.h new file mode 100644 index 0000000000..809916ac2b --- /dev/null +++ b/hesiod/hesiod_p.h @@ -0,0 +1,41 @@ +/* + * Copyright (c) 1996 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +/* + * $Id$ + */ + +/* + * hesiod_p.h -- private definitions for the hesiod library + */ + +#ifndef HESIOD_P_H_INCLUDED +#define HESIOD_P_H_INCLUDED + +/* Defaults if the configuration file is not present. */ +#define DEF_RHS ".athena.mit.edu" +#define DEF_LHS ".ns" + +struct hesiod_p { + char *lhs; /* normally ".ns" */ + char *rhs; /* AKA the default hesiod domain */ + int classes[2]; /* The class search order. */ +}; + +#define MAX_HESRESP 1024 + +#endif /*HESIOD_P_H_INCLUDED*/ diff --git a/hesiod/libnss_hesiod.map b/hesiod/libnss_hesiod.map new file mode 100644 index 0000000000..6c1fd5eba9 --- /dev/null +++ b/hesiod/libnss_hesiod.map @@ -0,0 +1,12 @@ +GLIBC_2.0 { + global: + _nss_hesiod_setpwent; _nss_hesiod_endpwent; + _nss_hesiod_getpwnam_r; _nss_hesiod_getpwuid; + _nss_hesiod_setgrent; _nss_hesiod_endgrent; + _nss_hesiod_getgrnam_r; _nss_hesiod_getgrgid; + _nss_hesiod_setservent; _nss_hesiod_endservent; + _nss_hesiod_getservbyname_r; + + local: + *; +}; diff --git a/hesiod/nss_hesiod/hesiod-grp.c b/hesiod/nss_hesiod/hesiod-grp.c new file mode 100644 index 0000000000..7b0832dbe3 --- /dev/null +++ b/hesiod/nss_hesiod/hesiod-grp.c @@ -0,0 +1,150 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <bits/libc-lock.h> +#include <errno.h> +#include <hesiod.h> +#include <nss.h> +#include <grp.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* Get the declaration of the parser function. */ +#define ENTNAME grent +#define STRUCTURE group +#define EXTERN_PARSER +#include <nss/nss_files/files-parse.c> + +/* Locks the static variables in this file. */ +__libc_lock_define_initialized (static, lock); + +static void *context = NULL; + +static enum nss_status +internal_setgrent (void) +{ + if (!context) + { + if (hesiod_init (&context) == -1) + return NSS_STATUS_UNAVAIL; + } + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_setgrent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_setgrent (); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_endgrent (void) +{ + __libc_lock_lock (lock); + + if (context) + { + hesiod_end (context); + context = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +lookup (const char *name, const char *type, struct group *grp, + char *buffer, size_t buflen) +{ + enum nss_status status; + struct parser_data *data = (void *) buffer; + size_t linebuflen; + char **list; + int parse_res; + + status = internal_setgrent (); + if (status != NSS_STATUS_SUCCESS) + return status; + + list = hesiod_resolve (context, name, type); + if (list == NULL) + return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL; + + linebuflen = buffer + buflen - data->linebuffer; + if (linebuflen < strlen (*list) + 1) + { + hesiod_free_list (context, list); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + strcpy (buffer, *list); + hesiod_free_list (context, list); + + parse_res = _nss_files_parse_grent (buffer, grp, data, buflen); + if (parse_res < 1) + return parse_res == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND; + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_getgrnam_r (const char *name, struct group *grp, + char *buffer, size_t buflen) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = lookup (name, "group", grp, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_getgrgid_r (gid_t gid, struct group *grp, + char *buffer, size_t buflen) +{ + enum nss_status status = NSS_STATUS_UNAVAIL; + char gidstr[21]; /* We will probably never have a gid_t with more + than 64 bits. */ + + snprintf (gidstr, sizeof gidstr, "%d", gid); + + __libc_lock_lock (lock); + + status = lookup (gidstr, "gid", grp, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} diff --git a/hesiod/nss_hesiod/hesiod-pwd.c b/hesiod/nss_hesiod/hesiod-pwd.c new file mode 100644 index 0000000000..bb2a4c8785 --- /dev/null +++ b/hesiod/nss_hesiod/hesiod-pwd.c @@ -0,0 +1,150 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <bits/libc-lock.h> +#include <errno.h> +#include <hesiod.h> +#include <nss.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* Get the declaration of the parser function. */ +#define ENTNAME pwent +#define STRUCTURE passwd +#define EXTERN_PARSER +#include <nss/nss_files/files-parse.c> + +/* Locks the static variables in this file. */ +__libc_lock_define_initialized (static, lock); + +static void *context = NULL; + +static enum nss_status +internal_setpwent (void) +{ + if (!context) + { + if (hesiod_init (&context) == -1) + return NSS_STATUS_UNAVAIL; + } + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_setpwent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_setpwent (); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_endpwent (void) +{ + __libc_lock_lock (lock); + + if (context) + { + hesiod_end (context); + context = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +lookup (const char *name, const char *type, struct passwd *pwd, + char *buffer, size_t buflen) +{ + enum nss_status status; + struct parser_data *data = (void *) buffer; + size_t linebuflen; + char **list; + int parse_res; + + status = internal_setpwent (); + if (status != NSS_STATUS_SUCCESS) + return status; + + list = hesiod_resolve (context, name, type); + if (list == NULL) + return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL; + + linebuflen = buffer + buflen - data->linebuffer; + if (linebuflen < strlen (*list) + 1) + { + hesiod_free_list (context, list); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + strcpy (data->linebuffer, *list); + hesiod_free_list (context, list); + + parse_res = _nss_files_parse_pwent (buffer, pwd, data, buflen); + if (parse_res < 1) + return parse_res == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND; + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_getpwnam_r (const char *name, struct passwd *pwd, + char *buffer, size_t buflen) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = lookup (name, "passwd", pwd, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_getpwuid_r (uid_t uid, struct passwd *pwd, + char *buffer, size_t buflen) +{ + enum nss_status status = NSS_STATUS_UNAVAIL; + char uidstr[21]; /* We will probably never have a gid_t with more + than 64 bits. */ + + snprintf (uidstr, sizeof uidstr, "%d", uid); + + __libc_lock_lock (lock); + + status = lookup (uidstr, "uid", pwd, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} diff --git a/hesiod/nss_hesiod/hesiod-service.c b/hesiod/nss_hesiod/hesiod-service.c new file mode 100644 index 0000000000..f74877f748 --- /dev/null +++ b/hesiod/nss_hesiod/hesiod-service.c @@ -0,0 +1,165 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <bits/libc-lock.h> +#include <errno.h> +#include <hesiod.h> +#include <netdb.h> +#include <netinet/in.h> +#include <nss.h> +#include <stdlib.h> +#include <string.h> + + +/* Hesiod uses a format for service entries that differs from the + traditional format. We therefore declare our own parser. */ + +#define ENTNAME servent + +#define ENTDATA servent_data +struct servent_data {}; + +#define TRAILING_LIST_MEMBER s_aliases +#define TRAILING_LIST_SEPARATOR_P isspace +#include <nss/nss_files/files-parse.c> +#define ISSEMICOLON(c) ((c) == ';') +LINE_PARSER +("", + (void) entdata; + STRING_FIELD (result->s_name, ISSEMICOLON, 1); + STRING_FIELD (result->s_proto, ISSEMICOLON, 1); + INT_FIELD (result->s_port, ISSEMICOLON, 10, 0, htons); + ) + + +/* Locks the static variables in this file. */ +__libc_lock_define_initialized (static, lock); + +static void *context = NULL; + +static enum nss_status +internal_setservent (void) +{ + if (!context) + { + if (hesiod_init (&context) == -1) + return NSS_STATUS_UNAVAIL; + } + + return NSS_STATUS_SUCCESS; +} + +enum nss_status +_nss_hesiod_setservent (void) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = internal_setservent (); + + __libc_lock_unlock (lock); + + return status; +} + +enum nss_status +_nss_hesiod_endservent (void) +{ + __libc_lock_lock (lock); + + if (context) + { + hesiod_end (context); + context = NULL; + } + + __libc_lock_unlock (lock); + + return NSS_STATUS_SUCCESS; +} + +static enum nss_status +lookup (const char *name, const char *protocol, struct servent *serv, + char *buffer, size_t buflen) +{ + enum nss_status status; + struct parser_data *data = (void *) buffer; + size_t linebuflen; + char **list, **item; + int parse_res; + int found; + + status = internal_setservent (); + if (status != NSS_STATUS_SUCCESS) + return status; + + list = hesiod_resolve (context, name, "service"); + if (list == NULL) + return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL; + + linebuflen = buffer + buflen - data->linebuffer; + + item = list; + found = 0; + do + { + if (linebuflen < strlen (*item) + 1) + { + hesiod_free_list (context, list); + __set_errno (ERANGE); + return NSS_STATUS_TRYAGAIN; + } + + strcpy (data->linebuffer, *item); + + parse_res = parse_line (buffer, serv, data, buflen); + if (parse_res == -1) + { + hesiod_free_list (context, list); + return NSS_STATUS_TRYAGAIN; + } + + if (parse_res > 0) + found = protocol == NULL || strcmp (serv->s_proto, protocol) == 0; + + ++item; + } + while (*item != NULL && !found); + + hesiod_free_list (context, list); + + return found ? NSS_STATUS_SUCCESS : NSS_STATUS_NOTFOUND; +} + +enum nss_status +_nss_hesiod_getservbyname_r (const char *name, const char *protocol, + struct servent *serv, + char *buffer, size_t buflen) +{ + enum nss_status status; + + __libc_lock_lock (lock); + + status = lookup (name, protocol, serv, buffer, buflen); + + __libc_lock_unlock (lock); + + return status; +} |