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--- src/fgetpwent.c.orig 2014-03-15 15:05:11.000000000 +0100
+++ src/fgetpwent.c 2014-03-15 15:02:41.000000000 +0100
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2013 Canonical Limited
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the licence, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Authors: Ryan Lortie <desrt@desrt.ca>
+ */
+
+static gchar *
+fgetpwent_getline (FILE *fp)
+{
+ static GString str;
+
+ /* We could be "more clever" here and avoid the strlen() but this is a
+ * clear case of dumb is better.
+ */
+ str.len = 0;
+ while (!str.len || str.str[str.len - 1] != '\n')
+ {
+ if (str.allocated_len < str.len + 32)
+ {
+ str.allocated_len = str.len + 32;
+ str.str = g_realloc (str.str, str.allocated_len);
+ }
+
+ if (fgets (str.str + str.len, str.allocated_len - str.len, fp) == NULL)
+ return NULL;
+
+ str.len = strlen (str.str + str.len) + str.len;
+ }
+
+ /* chomp the '\n' */
+ str.str[str.len - 1] = '\0';
+
+ return str.str;
+}
+
+static struct passwd *
+fgetpwent (FILE *fp)
+{
+ static struct passwd pw;
+ guint64 intval;
+ gchar *line;
+
+ /* In case of failure, we ignore the line and start again */
+again:
+ line = fgetpwent_getline (fp);
+ if (!line)
+ return NULL;
+
+ while (g_ascii_isspace (*line))
+ line++;
+
+ /* comments, empty lines */
+ if (line[0] == '#' || line[0] == '\0')
+ goto again;
+
+ /* username */
+ pw.pw_name = line;
+ if (!(line = strchr (line, ':')))
+ goto again;
+ *line++ = '\0';
+
+ /* password */
+ pw.pw_passwd = line;
+ if (!(line = strchr (line, ':')))
+ goto again;
+ *line++ = '\0';
+
+ /* uid */
+ pw.pw_uid = intval = g_ascii_strtoull (line, &line, 10);
+ if (pw.pw_uid != intval || *line++ != ':')
+ goto again;
+
+ /* gid */
+ pw.pw_gid = intval = g_ascii_strtoull (line, &line, 10);
+ if (pw.pw_gid != intval || *line++ != ':')
+ goto again;
+
+ /* gecos */
+ pw.pw_gecos = line;
+ if (!(line = strchr (line, ':')))
+ goto again;
+ *line++ = '\0';
+
+ /* home directory */
+ pw.pw_dir = line;
+ if (!(line = strchr (line, ':')))
+ goto again;
+ *line++ = '\0';
+
+ /* shell */
+ pw.pw_shell = line;
+
+ return &pw;
+}
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