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/* nss_cdb-group.c: nss_cdb group database routines.
*
* This file is a part of tinycdb package.
* Copyright (C) 2001-2023 Michael Tokarev <mjt+cdb@corpit.ru>
*
* 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.
*/
#include "nss_cdb.h"
#include <grp.h>
#include <stdlib.h>
#include <string.h>
nss_common(group, struct group, grent);
nss_getbyname(getgrnam, struct group);
nss_getbyid(getgrgid, struct group, gid_t);
static char *getmember(char **bp) {
char *b, *m;
b = *bp;
while(*b == ',') ++b;
if (!*b) return NULL;
m = b++;
for(;;) {
if (*b == ',') {
*b++ = '\0';
*bp = b;
return m;
}
else if (*b == '\0') {
*bp = b;
return m;
}
else
++b;
}
}
static int
nss_group_parse(struct group *result, char *buf, size_t bufl) {
char *bufend;
char **mem;
int n;
bufend = buf + strlen(buf) + 1;
n = (unsigned)bufend % sizeof(char*);
if (n)
bufend += sizeof(char*) - n;
result->gr_mem = mem = (char**)bufend;
bufend = buf + bufl - sizeof(char*);
STRING_FIELD(buf, result->gr_name);
if (!result->gr_name[0]) return -1;
STRING_FIELD(buf, result->gr_passwd);
INT_FIELD(buf, result->gr_gid, (gid_t));
for(;;) {
if ((char*)mem > bufend)
return 0;
if (!(*mem++ = getmember(&buf)))
break;
}
return 1;
}
#ifdef TEST
#include <stdio.h>
void printit(struct group *g) {
char **mem;
printf("name=%s pass=%s gid=%d mem:", g->gr_name, g->gr_passwd, g->gr_gid);
mem = g->gr_mem;
if (!mem)
printf(" none");
else
while(*mem)
printf(" %s", *mem++);
putchar('\n');
}
int main(int argc, char **argv) {
struct group gr, *g;
char buf[36];
int err, r;
while(*++argv) {
r = _nss_cdb_getgrgid_r(atoi(*argv), &gr, buf, sizeof(buf), &err);
if (r == NSS_STATUS_SUCCESS)
printit(&gr);
else
printf("cdb(%s): %d %s\n", *argv, r, strerror(err));
g = getgrgid(atoi(*argv));
if (g)
printit(g);
else
printf("grgid(%s): %m\n", *argv);
}
return 0;
}
#endif
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