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author | des <des@FreeBSD.org> | 2004-09-24 19:48:50 +0000 |
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committer | des <des@FreeBSD.org> | 2004-09-24 19:48:50 +0000 |
commit | bd20f820eed84d93e9324f7de3865ce58a0c7731 (patch) | |
tree | bb3edb8dcc07615d426eb359f46c1741e4c22575 /contrib/bind/lib/irs/gen_gr.c | |
parent | 3fe60073ff63db1d6dc640928a53105d35a80da4 (diff) | |
download | FreeBSD-src-bd20f820eed84d93e9324f7de3865ce58a0c7731.zip FreeBSD-src-bd20f820eed84d93e9324f7de3865ce58a0c7731.tar.gz |
Retire the BIND 8 sources.
Diffstat (limited to 'contrib/bind/lib/irs/gen_gr.c')
-rw-r--r-- | contrib/bind/lib/irs/gen_gr.c | 482 |
1 files changed, 0 insertions, 482 deletions
diff --git a/contrib/bind/lib/irs/gen_gr.c b/contrib/bind/lib/irs/gen_gr.c deleted file mode 100644 index 9a7af3d..0000000 --- a/contrib/bind/lib/irs/gen_gr.c +++ /dev/null @@ -1,482 +0,0 @@ -/* - * Copyright (c) 1996-1999 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. - */ - -#if !defined(LINT) && !defined(CODECENTER) -static const char rcsid[] = "$Id: gen_gr.c,v 1.26 2002/07/18 02:07:44 marka Exp $"; -#endif - -/* Imports */ - -#include "port_before.h" - -#ifndef WANT_IRS_GR -static int __bind_irs_gr_unneeded; -#else - -#include <sys/types.h> - -#include <isc/assertions.h> -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include <netinet/in.h> -#include <arpa/nameser.h> -#include <resolv.h> - -#include <isc/memcluster.h> -#include <irs.h> - -#include "port_after.h" - -#include "irs_p.h" -#include "gen_p.h" - -/* Definitions */ - -struct pvt { - struct irs_rule * rules; - struct irs_rule * rule; - struct irs_gr * gr; - /* - * Need space to store the entries read from the group file. - * The members list also needs space per member, and the - * strings making up the user names must be allocated - * somewhere. Rather than doing lots of small allocations, - * we keep one buffer and resize it as needed. - */ - struct group group; - size_t nmemb; /* Malloc'd max index of gr_mem[]. */ - char * membuf; - size_t membufsize; - struct __res_state * res; - void (*free_res)(void *); -}; - -/* Forward */ - -static void gr_close(struct irs_gr *); -static struct group * gr_next(struct irs_gr *); -static struct group * gr_byname(struct irs_gr *, const char *); -static struct group * gr_bygid(struct irs_gr *, gid_t); -static void gr_rewind(struct irs_gr *); -static int gr_list(struct irs_gr *, const char *, - gid_t, gid_t *, int *); -static void gr_minimize(struct irs_gr *); -static struct __res_state * gr_res_get(struct irs_gr *); -static void gr_res_set(struct irs_gr *, - struct __res_state *, - void (*)(void *)); - -static void grmerge(struct irs_gr *gr, const struct group *src, - int preserve); - -static int countvec(char **vec); -static int isnew(char **old, char *new); -static int countnew(char **old, char **new); -static size_t sizenew(char **old, char **new); -static int newgid(int, gid_t *, gid_t); - -/* Public */ - -struct irs_gr * -irs_gen_gr(struct irs_acc *this) { - struct gen_p *accpvt = (struct gen_p *)this->private; - struct irs_gr *gr; - struct pvt *pvt; - - if (!(gr = memget(sizeof *gr))) { - errno = ENOMEM; - return (NULL); - } - memset(gr, 0x5e, sizeof *gr); - if (!(pvt = memget(sizeof *pvt))) { - memput(gr, sizeof *gr); - errno = ENOMEM; - return (NULL); - } - memset(pvt, 0, sizeof *pvt); - pvt->rules = accpvt->map_rules[irs_gr]; - pvt->rule = pvt->rules; - gr->private = pvt; - gr->close = gr_close; - gr->next = gr_next; - gr->byname = gr_byname; - gr->bygid = gr_bygid; - gr->rewind = gr_rewind; - gr->list = gr_list; - gr->minimize = gr_minimize; - gr->res_get = gr_res_get; - gr->res_set = gr_res_set; - return (gr); -} - -/* Methods. */ - -static void -gr_close(struct irs_gr *this) { - struct pvt *pvt = (struct pvt *)this->private; - - memput(pvt, sizeof *pvt); - memput(this, sizeof *this); -} - -static struct group * -gr_next(struct irs_gr *this) { - struct pvt *pvt = (struct pvt *)this->private; - struct group *rval; - struct irs_gr *gr; - - while (pvt->rule) { - gr = pvt->rule->inst->gr; - rval = (*gr->next)(gr); - if (rval) - return (rval); - if (!(pvt->rule->flags & IRS_CONTINUE)) - break; - pvt->rule = pvt->rule->next; - if (pvt->rule) { - gr = pvt->rule->inst->gr; - (*gr->rewind)(gr); - } - } - return (NULL); -} - -static struct group * -gr_byname(struct irs_gr *this, const char *name) { - struct pvt *pvt = (struct pvt *)this->private; - struct irs_rule *rule; - struct group *tval; - struct irs_gr *gr; - int dirty; - - dirty = 0; - for (rule = pvt->rules; rule; rule = rule->next) { - gr = rule->inst->gr; - tval = (*gr->byname)(gr, name); - if (tval) { - grmerge(this, tval, dirty++); - if (!(rule->flags & IRS_MERGE)) - break; - } else { - if (!(rule->flags & IRS_CONTINUE)) - break; - } - } - if (dirty) - return (&pvt->group); - return (NULL); -} - -static struct group * -gr_bygid(struct irs_gr *this, gid_t gid) { - struct pvt *pvt = (struct pvt *)this->private; - struct irs_rule *rule; - struct group *tval; - struct irs_gr *gr; - int dirty; - - dirty = 0; - for (rule = pvt->rules; rule; rule = rule->next) { - gr = rule->inst->gr; - tval = (*gr->bygid)(gr, gid); - if (tval) { - grmerge(this, tval, dirty++); - if (!(rule->flags & IRS_MERGE)) - break; - } else { - if (!(rule->flags & IRS_CONTINUE)) - break; - } - } - if (dirty) - return (&pvt->group); - return (NULL); -} - -static void -gr_rewind(struct irs_gr *this) { - struct pvt *pvt = (struct pvt *)this->private; - struct irs_gr *gr; - - pvt->rule = pvt->rules; - if (pvt->rule) { - gr = pvt->rule->inst->gr; - (*gr->rewind)(gr); - } -} - -static int -gr_list(struct irs_gr *this, const char *name, - gid_t basegid, gid_t *groups, int *ngroups) -{ - struct pvt *pvt = (struct pvt *)this->private; - struct irs_rule *rule; - struct irs_gr *gr; - int t_ngroups, maxgroups; - gid_t *t_groups; - int n, t, rval = 0; - - maxgroups = *ngroups; - *ngroups = 0; - t_groups = (gid_t *)malloc(maxgroups * sizeof(gid_t)); - if (!t_groups) { - errno = ENOMEM; - return (-1); - } - - for (rule = pvt->rules; rule; rule = rule->next) { - t_ngroups = maxgroups; - gr = rule->inst->gr; - t = (*gr->list)(gr, name, basegid, t_groups, &t_ngroups); - for (n = 0; n < t_ngroups; n++) { - if (newgid(*ngroups, groups, t_groups[n])) { - if (*ngroups == maxgroups) { - rval = -1; - goto done; - } - groups[(*ngroups)++] = t_groups[n]; - } - } - if (t == 0) { - if (!(rule->flags & IRS_MERGE)) - break; - } else { - if (!(rule->flags & IRS_CONTINUE)) - break; - } - } - done: - free(t_groups); - return (rval); -} - -static void -gr_minimize(struct irs_gr *this) { - struct pvt *pvt = (struct pvt *)this->private; - struct irs_rule *rule; - - for (rule = pvt->rules; rule != NULL; rule = rule->next) { - struct irs_gr *gr = rule->inst->gr; - - (*gr->minimize)(gr); - } -} - -static struct __res_state * -gr_res_get(struct irs_gr *this) { - struct pvt *pvt = (struct pvt *)this->private; - - if (!pvt->res) { - struct __res_state *res; - res = (struct __res_state *)malloc(sizeof *res); - if (!res) { - errno = ENOMEM; - return (NULL); - } - memset(res, 0, sizeof *res); - gr_res_set(this, res, free); - } - - return (pvt->res); -} - -static void -gr_res_set(struct irs_gr *this, struct __res_state *res, - void (*free_res)(void *)) { - struct pvt *pvt = (struct pvt *)this->private; - struct irs_rule *rule; - - if (pvt->res && pvt->free_res) { - res_nclose(pvt->res); - (*pvt->free_res)(pvt->res); - } - - pvt->res = res; - pvt->free_res = free_res; - - for (rule = pvt->rules; rule != NULL; rule = rule->next) { - struct irs_gr *gr = rule->inst->gr; - - if (gr->res_set) - (*gr->res_set)(gr, pvt->res, NULL); - } -} - -/* Private. */ - -static void -grmerge(struct irs_gr *this, const struct group *src, int preserve) { - struct pvt *pvt = (struct pvt *)this->private; - char *cp, **m, **p, *oldmembuf, *ep; - int n, ndst, nnew; - size_t used; - - if (!preserve) { - pvt->group.gr_gid = src->gr_gid; - if (pvt->nmemb < 1) { - m = malloc(sizeof *m); - if (!m) { - /* No harm done, no work done. */ - return; - } - pvt->group.gr_mem = m; - pvt->nmemb = 1; - } - pvt->group.gr_mem[0] = NULL; - } - ndst = countvec(pvt->group.gr_mem); - nnew = countnew(pvt->group.gr_mem, src->gr_mem); - - /* - * Make sure destination member array is large enough. - * p points to new portion. - */ - n = ndst + nnew + 1; - if ((size_t)n > pvt->nmemb) { - m = realloc(pvt->group.gr_mem, n * sizeof *m); - if (!m) { - /* No harm done, no work done. */ - return; - } - pvt->group.gr_mem = m; - pvt->nmemb = n; - } - p = pvt->group.gr_mem + ndst; - - /* - * Enlarge destination membuf; cp points at new portion. - */ - n = sizenew(pvt->group.gr_mem, src->gr_mem); - INSIST((nnew == 0) == (n == 0)); - if (!preserve) { - n += strlen(src->gr_name) + 1; - n += strlen(src->gr_passwd) + 1; - } - if (n == 0) { - /* No work to do. */ - return; - } - used = preserve ? pvt->membufsize : 0; - cp = malloc(used + n); - if (!cp) { - /* No harm done, no work done. */ - return; - } - ep = cp + used + n; - if (used != 0) - memcpy(cp, pvt->membuf, used); - oldmembuf = pvt->membuf; - pvt->membuf = cp; - pvt->membufsize = used + n; - cp += used; - - /* - * Adjust group.gr_mem. - */ - if (pvt->membuf != oldmembuf) - for (m = pvt->group.gr_mem; *m; m++) - *m = pvt->membuf + (*m - oldmembuf); - - /* - * Add new elements. - */ - for (m = src->gr_mem; *m; m++) - if (isnew(pvt->group.gr_mem, *m)) { - *p++ = cp; - *p = NULL; -#ifdef HAVE_STRLCPY - strlcpy(cp, *m, ep - cp); -#else - strcpy(cp, *m); -#endif - cp += strlen(cp) + 1; - } - if (preserve) { - pvt->group.gr_name = pvt->membuf + - (pvt->group.gr_name - oldmembuf); - pvt->group.gr_passwd = pvt->membuf + - (pvt->group.gr_passwd - oldmembuf); - } else { - pvt->group.gr_name = cp; -#ifdef HAVE_STRLCPY - strlcpy(cp, src->gr_name, ep - cp); -#else - strcpy(cp, src->gr_name); -#endif - cp += strlen(src->gr_name) + 1; - pvt->group.gr_passwd = cp; -#ifdef HAVE_STRLCPY - strlcpy(cp, src->gr_passwd, ep - cp); -#else - strcpy(cp, src->gr_passwd); -#endif - cp += strlen(src->gr_passwd) + 1; - } - if (oldmembuf != NULL) - free(oldmembuf); - INSIST(cp >= pvt->membuf && cp <= &pvt->membuf[pvt->membufsize]); -} - -static int -countvec(char **vec) { - int n = 0; - - while (*vec++) - n++; - return (n); -} - -static int -isnew(char **old, char *new) { - for (; *old; old++) - if (strcmp(*old, new) == 0) - return (0); - return (1); -} - -static int -countnew(char **old, char **new) { - int n = 0; - - for (; *new; new++) - n += isnew(old, *new); - return (n); -} - -static size_t -sizenew(char **old, char **new) { - size_t n = 0; - - for (; *new; new++) - if (isnew(old, *new)) - n += strlen(*new) + 1; - return (n); -} - -static int -newgid(int ngroups, gid_t *groups, gid_t group) { - ngroups--, groups++; - for (; ngroups-- > 0; groups++) - if (*groups == group) - return (0); - return (1); -} - -#endif /* WANT_IRS_GR */ |