diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/krb5_wrap/krb5_samba.c | 91 | ||||
| -rw-r--r-- | lib/krb5_wrap/krb5_samba.h | 7 |
2 files changed, 98 insertions, 0 deletions
diff --git a/lib/krb5_wrap/krb5_samba.c b/lib/krb5_wrap/krb5_samba.c index ffbd8d42ad..c853b7558d 100644 --- a/lib/krb5_wrap/krb5_samba.c +++ b/lib/krb5_wrap/krb5_samba.c @@ -1556,6 +1556,97 @@ krb5_error_code smb_krb5_get_creds(const char *server_s, } /* + simulate a kinit, putting the tgt in the given credentials cache. + Orignally by remus@snapserver.com + + This version is built to use a keyblock, rather than needing the + original password. + + The impersonate_principal is the principal if NULL, or the principal + to impersonate + + The target_service defaults to the krbtgt if NULL, but could be + kpasswd/realm or the local service (if we are doing s4u2self) +*/ +krb5_error_code kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc, + krb5_principal principal, + krb5_keyblock *keyblock, + const char *target_service, + krb5_get_init_creds_opt *krb_options, + time_t *expire_time, + time_t *kdc_time) +{ + krb5_error_code code = 0; + krb5_creds my_creds; + +#if defined(HAVE_KRB5_GET_INIT_CREDS_KEYBLOCK) + code = krb5_get_init_creds_keyblock(ctx, &my_creds, principal, + keyblock, 0, target_service, + krb_options); +#elif defined(HAVE_KRB5_GET_INIT_CREDS_KEYTAB) +{ +#define SMB_CREDS_KEYTAB "MEMORY:tmp_smb_creds_XXXXXX" + char tmp_name[sizeof(SMB_CREDS_KEYTAB)]; + krb5_keytab_entry entry; + krb5_keytab keytab; + + memset(&entry, 0, sizeof(entry)); + entry.principal = principal; + *(KRB5_KT_KEY(&entry)) = *keyblock; + + memcpy(tmp_name, SMB_CREDS_KEYTAB, sizeof(SMB_CREDS_KEYTAB)); + mktemp(tmp_name); + if (tmp_name[0] == 0) { + return KRB5_KT_BADNAME; + } + code = krb5_kt_resolve(ctx, tmp_name, &keytab); + if (code) { + return code; + } + + code = krb5_kt_add_entry(ctx, keytab, &entry); + if (code) { + (void)krb5_kt_close(ctx, keytab); + goto done; + } + + code = krb5_get_init_creds_keytab(ctx, &my_creds, principal, + keytab, 0, target_service, + krb_options); + (void)krb5_kt_close(ctx, keytab); +} +#else +#error krb5_get_init_creds_keyblock not available! +#endif + if (code) { + return code; + } + + code = krb5_cc_initialize(ctx, cc, principal); + if (code) { + goto done; + } + + code = krb5_cc_store_cred(ctx, cc, &my_creds); + if (code) { + goto done; + } + + if (expire_time) { + *expire_time = (time_t) my_creds.times.endtime; + } + + if (kdc_time) { + *kdc_time = (time_t) my_creds.times.starttime; + } + + code = 0; +done: + krb5_free_cred_contents(ctx, &my_creds); + return code; +} + +/* * smb_krb5_principal_get_realm * * @brief Get realm of a principal diff --git a/lib/krb5_wrap/krb5_samba.h b/lib/krb5_wrap/krb5_samba.h index 6a0f9dc2fd..771c43de44 100644 --- a/lib/krb5_wrap/krb5_samba.h +++ b/lib/krb5_wrap/krb5_samba.h @@ -198,6 +198,13 @@ krb5_error_code smb_krb5_get_creds(const char *server_s, const char *cc, const char *impersonate_princ_s, krb5_creds **creds_p); +krb5_error_code kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc, + krb5_principal principal, + krb5_keyblock *keyblock, + const char *target_service, + krb5_get_init_creds_opt *krb_options, + time_t *expire_time, + time_t *kdc_time); char *smb_krb5_principal_get_realm(krb5_context context, krb5_principal principal); |