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/* $OpenBSD: entries.c,v 1.6 2023/07/18 13:06:33 claudio Exp $ */
/*
* Copyright (c) 2008 Pierre-Yves Ritschard <pyr@openbsd.org>
*
* 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 THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/tree.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <unistd.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "ypldap.h"
#include "log.h"
void
flatten_entries(struct env *env)
{
size_t len;
char *linep;
char *endp;
char *tmp;
struct userent *ue;
struct groupent *ge;
log_debug("flattening trees");
/*
* This takes all the line pointers in RB elements and
* concatenates them in a single string, to be able to
* implement next element lookup without tree traversal.
*
* An extra octet is alloced to make space for an additional NUL.
*/
if ((linep = calloc(1, env->sc_user_line_len + 1)) == NULL) {
/*
* XXX: try allocating a smaller chunk of memory
*/
fatal("out of memory");
}
endp = linep;
RB_FOREACH(ue, user_name_tree, env->sc_user_names) {
/*
* we convert the first nul back to a column,
* copy the string and then convert it back to a nul.
*/
ue->ue_line[strlen(ue->ue_line)] = ':';
log_debug("pushing line: %s", ue->ue_line);
len = strlen(ue->ue_line) + 1;
memcpy(endp, ue->ue_line, len);
endp[strcspn(endp, ":")] = '\0';
free(ue->ue_line);
ue->ue_line = endp;
endp += len;
/*
* To save memory strdup(3) the netid_line which originally used
* LINE_WIDTH bytes
*/
tmp = ue->ue_netid_line;
ue->ue_netid_line = strdup(tmp);
if (ue->ue_netid_line == NULL) {
fatal("out of memory");
}
free(tmp);
}
env->sc_user_lines = linep;
log_debug("done pushing users");
if ((linep = calloc(1, env->sc_group_line_len + 1)) == NULL) {
/*
* XXX: try allocating a smaller chunk of memory
*/
fatal("out of memory");
}
endp = linep;
RB_FOREACH(ge, group_name_tree, env->sc_group_names) {
/*
* we convert the first nul back to a column,
* copy the string and then convert it back to a nul.
*/
ge->ge_line[strlen(ge->ge_line)] = ':';
log_debug("pushing line: %s", ge->ge_line);
len = strlen(ge->ge_line) + 1;
memcpy(endp, ge->ge_line, len);
endp[strcspn(endp, ":")] = '\0';
free(ge->ge_line);
ge->ge_line = endp;
endp += len;
}
env->sc_group_lines = linep;
log_debug("done pushing groups");
}
int
userent_name_cmp(struct userent *ue1, struct userent *ue2)
{
return (strcmp(ue1->ue_line, ue2->ue_line));
}
int
userent_uid_cmp(struct userent *ue1, struct userent *ue2)
{
return (ue1->ue_uid - ue2->ue_uid);
}
int
groupent_name_cmp(struct groupent *ge1, struct groupent *ge2)
{
return (strcmp(ge1->ge_line, ge2->ge_line));
}
int
groupent_gid_cmp(struct groupent *ge1, struct groupent *ge2)
{
return (ge1->ge_gid - ge2->ge_gid);
}
RB_GENERATE(user_name_tree, userent, ue_name_node, userent_name_cmp);
RB_GENERATE(user_uid_tree, userent, ue_uid_node, userent_uid_cmp);
RB_GENERATE(group_name_tree, groupent, ge_name_node, groupent_name_cmp);
RB_GENERATE(group_gid_tree, groupent, ge_gid_node, groupent_gid_cmp);
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