1 files changed, 74 insertions, 1 deletions
diff --git a/src/grp/getgrent.c b/src/grp/getgrent.c
index 228f916c..aac4e175 100644
--- a/src/grp/getgrent.c
+++ b/src/grp/getgrent.c
@@ -1,9 +1,82 @@
+#include "sys/types.h"
 #include <grp.h>
 #include "stddef.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)
 {
-	return NULL;
+	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;
 }
 
 /*