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#if ((!defined _POSIX_C_SOURCE) || (_POSIX_C_SOURCE < 2))
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 2
#endif
#include <sys/types.h>
#include <grp.h>
#include <stdlib.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include "_config.h"
#include "_grp.h"
#ifndef LINE_MAX
#define LINE_MAX _POSIX2_LINE_MAX
#endif
#ifndef _XOPEN_SOURCE
static
#endif
struct group * getgrent(void)
{
static char buf[LINE_MAX + 1];
char *group, *password, *gid, *members, *nl;
int member = 0;
/* TODO: attempt first calling _GRP_CMD */
if (__grp.db == NULL) {
__grp.db = fopen(_GRP_DB, "r");
if (__grp.db == NULL) {
return NULL;
}
}
if (fgets(buf, sizeof(buf), __grp.db) == NULL) {
endgrent();
return NULL;
}
group = buf;
if ((password = strchr(buf, ':')) != NULL) {
*password = '\0';
password++;
} else {
return NULL;
}
if ((gid = strchr(password, ':')) != NULL) {
*gid = '\0';
gid++;
} else {
return NULL;
}
if ((members = strchr(gid, ':')) != NULL) {
*members = '\0';
members++;
if ((nl = strchr(members, '\n')) != NULL) {
*nl = '\0';
}
} else {
return NULL;
}
__grp.grp.gr_name = group;
__grp.grp.gr_gid = strtoul(gid, NULL, 10);
while (members && *members) {
__grp.members[member++] = members;
members = strchr(members, ',');
if (members) {
*members = '\0';
members++;
}
}
__grp.members[member] = NULL;
__grp.grp.gr_mem = __grp.members;
return &__grp.grp;
}
/*
XOPEN(400)
*/
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