44 lines
2.0 KiB
Diff
44 lines
2.0 KiB
Diff
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--- ./dovecot-1.0.beta2/src/auth/passdb-pam.c.pam-setcred 2006-01-30 11:04:01.000000000 +0100
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+++ ./dovecot-1.0.beta2/src/auth/passdb-pam.c 2006-01-30 11:05:39.000000000 +0100
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@@ -185,14 +185,39 @@
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pam_strerror(pamh, status));
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return status;
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}
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-
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#ifdef HAVE_PAM_SETCRED
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+
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+#if 0
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+/*
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+ * This is to fix a bug where dovecot was leaving a lot of temporary
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+ * kerberos tickets around and filling up disk space. If
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+ * pam_setcred(pamh, PAM_ESTABLISH_CRED) is called, which creates the
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+ * ticket, then a matching pam_setcred(pamh, PAM_DELETE_CRED) also
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+ * needs to be called to clean the ticket up. But the only reason to
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+ * have a cached ticket on disk is if the service is going to perform
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+ * some action during the session that requires access to the ticket
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+ * for validation. This implies the pam session is being held open,
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+ * which would be more typical pam usage. But the usage here is to
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+ * close the pam session immediately after authenticating the user
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+ * with pam_end, thus there is no benefit to creating the disk copy of
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+ * the ticket. So rather than finding all the early returns before
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+ * pam_end is invoked and adding pam_setcred(pamh, PAM_DELETE_CRED) to
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+ * each it is more sensible to not create the ticket in the first
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+ * place if we're not going to use it and thus not have to worry about
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+ * the clean up. Note the way the code is currently structured, with
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+ * an immediate call to pam_end() after authentication it implies the
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+ * code probably won't work with a file system like AFS which uses the
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+ * ticket for file system permissions, but restructuring the code for
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+ * this case is beyond the needs of fixing the aforementioned bug.
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+ * John Dennis <jdennis@redhat.com>
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+ */
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if ((status = pam_setcred(pamh, PAM_ESTABLISH_CRED)) != PAM_SUCCESS) {
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*error = t_strdup_printf("pam_setcred() failed: %s",
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pam_strerror(pamh, status));
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return status;
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}
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#endif
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+#endif
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if ((status = pam_acct_mgmt(pamh, 0)) != PAM_SUCCESS) {
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*error = t_strdup_printf("pam_acct_mgmt() failed: %s",
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