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--- shadow-4.0.14/man/useradd.8.goodname 2006-01-05 17:54:26.000000000 +0100
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+++ shadow-4.0.14/man/useradd.8 2006-01-05 18:01:18.000000000 +0100
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@@ -166,8 +166,6 @@
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Similarly, if the username already exists in an external user database such as NIS,
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\fBuseradd\fR
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will deny the user account creation request.
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-.PP
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-Usernames must begin with a lower case letter or an underscore, and only lower case letters, underscores, dashes, and dollar signs may follow. In regular expression terms: [a\-z_][a\-z0\-9_\-]*[$]
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.SH "FILES"
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.TP
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\fI/etc/passwd\fR
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--- shadow-4.0.14/libmisc/chkname.c.goodname 2005-08-31 19:24:57.000000000 +0200
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+++ shadow-4.0.14/libmisc/chkname.c 2006-01-05 17:59:45.000000000 +0100
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@@ -18,16 +18,24 @@
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static int good_name (const char *name)
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{
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/*
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- * User/group names must match [a-z_][a-z0-9_-]*[$]
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- */
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- if (!*name || !((*name >= 'a' && *name <= 'z') || *name == '_'))
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+ * User/group names must match gnu e-regex:
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+ * [a-zA-Z0-9_.][a-zA-Z0-9_.-]{0,30}[a-zA-Z0-9_.$-]?
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+ *
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+ * as a non-POSIX, extension, allow "$" as the last char for
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+ * sake of Samba 3.x "add machine script"
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+ */
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+ if (!*name || !((*name >= 'a' && *name <= 'z')
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+ || (*name >= 'A' && *name <= 'Z')
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+ || (*name >= '0' && *name <= '9')
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+ || *name == '_' || *name == '.'))
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return 0;
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while (*++name) {
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- if (!((*name >= 'a' && *name <= 'z') ||
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- (*name >= '0' && *name <= '9') ||
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- *name == '_' || *name == '-' ||
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- (*name == '$' && *(name + 1) == '\0')))
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+ if (!( (*name >= 'a' && *name <= 'z')
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+ || (*name >= 'A' && *name <= 'Z')
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+ || (*name >= '0' && *name <= '9')
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+ || *name == '_' || *name == '.' || *name == '-'
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+ || (*name == '$' && *(name + 1) == '\0')))
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return 0;
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}
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@@ -43,10 +51,9 @@
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#endif
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/*
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- * User names are limited by whatever utmp can
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- * handle (usually max 8 characters).
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+ * User names are limited by whatever utmp can handle.
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*/
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- if (strlen (name) > sizeof (ut.ut_user))
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+ if (strlen(name) + 1 > sizeof(ut.ut_user))
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return 0;
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return good_name (name);
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@@ -54,11 +61,13 @@
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int check_group_name (const char *name)
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{
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- /*
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- * Arbitrary limit for group names - max 16
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- * characters (same as on HP-UX 10).
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- */
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- if (strlen (name) > 16)
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+#if HAVE_UTMPX_H
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+ struct utmpx ut;
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+#else
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+ struct utmp ut;
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+#endif
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+
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+ if (strlen(name) + 1 > sizeof(ut.ut_user))
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return 0;
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return good_name (name);
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