kentpeacock / rpms / openssh

Forked from rpms/openssh 2 years ago
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diff --git a/auth-krb5.c b/auth-krb5.c
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index 2b02a04..19b9364 100644
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--- a/auth-krb5.c
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+++ b/auth-krb5.c
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@@ -375,6 +375,22 @@ cleanup:
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 	return -1;
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 }
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+/*
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+ * Reads  k5login_directory  option from the  krb5.conf
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+ */
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+krb5_error_code
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+ssh_krb5_get_k5login_directory(krb5_context ctx, char **k5login_directory) {
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+	profile_t p;
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+	int ret = 0;
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+
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+	ret = krb5_get_profile(ctx, &p);
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+	if (ret)
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+		return ret;
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+
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+	return profile_get_string(p, "libdefaults", "k5login_directory", NULL, NULL,
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+		k5login_directory);
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+}
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+
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 krb5_error_code
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 ssh_krb5_get_cctemplate(krb5_context ctx, char **ccname) {
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 	profile_t p;
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diff --git a/auth.h b/auth.h
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index f9d191c..c432d2f 100644
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--- a/auth.h
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+++ b/auth.h
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@@ -222,5 +222,7 @@ int	 sys_auth_passwd(Authctxt *, const char *);
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 #if defined(KRB5) && !defined(HEIMDAL)
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 #include <krb5.h>
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 krb5_error_code ssh_krb5_cc_gen(krb5_context, krb5_ccache *);
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+krb5_error_code ssh_krb5_get_k5login_directory(krb5_context ctx,
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+	char **k5login_directory);
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 #endif
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 #endif
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diff --git a/gss-serv-krb5.c b/gss-serv-krb5.c
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index a7c0c5f..df8cc9a 100644
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--- a/gss-serv-krb5.c
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+++ b/gss-serv-krb5.c
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@@ -244,8 +244,27 @@ ssh_gssapi_k5login_exists()
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 {
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 	char file[MAXPATHLEN];
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 	struct passwd *pw = the_authctxt->pw;
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+	char *k5login_directory = NULL;
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+	int ret = 0;
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+
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+	ret = ssh_krb5_get_k5login_directory(krb_context, &k5login_directory);
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+	debug3("%s: k5login_directory = %s (rv=%d)", __func__, k5login_directory, ret);
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+	if (k5login_directory == NULL || ret != 0) {
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+		/* If not set, the library will look for  k5login
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+		 * files in the user's home directory, with the filename  .k5login.
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+		 */
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+		snprintf(file, sizeof(file), "%s/.k5login", pw->pw_dir);
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+	} else {
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+		/* If set, the library will look for a local user's k5login file
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+		 * within the named directory, with a filename corresponding to the
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+		 * local username.
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+		 */
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+		snprintf(file, sizeof(file), "%s%s%s", k5login_directory, 
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+			k5login_directory[strlen(k5login_directory)-1] != '/' ? "/" : "",
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+			pw->pw_name);
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+	}
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+	debug("%s: Checking existence of file %s", __func__, file);
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-	snprintf(file, sizeof(file), "%s/.k5login", pw->pw_dir);
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 	return access(file, F_OK) == 0;
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 }
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diff --git a/sshd.8 b/sshd.8
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index 5c4f15b..135e290 100644
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--- a/sshd.8
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+++ b/sshd.8
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@@ -806,6 +806,10 @@ rlogin/rsh.
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 These files enforce GSSAPI/Kerberos authentication access control.
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 Further details are described in
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 .Xr ksu 1 .
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+The location of the k5login file depends on the configuration option
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+.Cm k5login_directory
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+in the
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+.Xr krb5.conf 5 .
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 .Pp
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 .It Pa ~/.ssh/
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 This directory is the default location for all user-specific configuration