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Set pkinit_kdc_hostname when known

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Since Windows doesn't use id-pkinit-san in its certificates, it is
necessary to manually configure which hosts are valid KDCs. In the case
where a kdcUrl (or hostname) is provided to us, we can do that
configuration ourselves.
This commit is contained in:
fifthdegree 2023-04-21 13:11:08 -04:00 committed by akallabeth
parent 7b0b273ec1
commit 201b743f20
1 changed files with 22 additions and 0 deletions
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22
winpr/libwinpr/sspi/Kerberos/krb5glue_mit.c
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@ -153,6 +153,9 @@ krb5_error_code krb5glue_get_init_creds(krb5_context ctx, krb5_principal princ,
{ {
const char* names[4] = { 0 }; const char* names[4] = { 0 };
char* realm = NULL; char* realm = NULL;
char* host_start = NULL;
char* host_end = NULL;
char tmp = '\0';
if ((rv = krb5_get_profile(ctx, &profile))) if ((rv = krb5_get_profile(ctx, &profile)))
goto cleanup; goto cleanup;
@ -171,6 +174,25 @@ krb5_error_code krb5glue_get_init_creds(krb5_context ctx, krb5_principal princ,
profile_clear_relation(profile, names); profile_clear_relation(profile, names);
profile_add_relation(profile, names, krb_settings->kdcUrl); profile_add_relation(profile, names, krb_settings->kdcUrl);
/* Since we know who the KDC is, tell krb5 that its certificate is valid for pkinit */
names[2] = "pkinit_kdc_hostname";
/* If kdcUrl is in URL form, get the hostname portion */
host_start = strstr(krb_settings->kdcUrl, "://");
if (host_start)
host_start += 3;
else
host_start = krb_settings->kdcUrl;
host_end = strchr(host_start, '/');
if (!host_end)
host_end = strchr(host_start, '\0');
tmp = *host_end;
*host_end = '\0';
profile_add_relation(profile, names, krb_settings->kdcUrl);
*host_end = tmp;
free(realm); free(realm);
if ((rv = profile_flush_to_file(profile, tmp_profile_path))) if ((rv = profile_flush_to_file(profile, tmp_profile_path)))