c84283ad0d
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1173 ec53bebd-3082-4978-b11e-865c3cabbd6b
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <krb5_locl.h>
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#include <krb5_error.h>
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#include <md4.h>
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krb5_error_code
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krb5_build_authenticator (krb5_context context,
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krb5_principal client,
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Checksum *cksum,
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Authenticator **auth_result,
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krb5_data *result)
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{
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struct timeval tv;
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Authenticator *auth = malloc(sizeof(*auth));
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char buf[1024];
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unsigned char *p;
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int len;
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struct md4 m;
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u_int32_t crc;
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if (auth_result)
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*auth_result = auth;
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auth->authenticator_vno = 5;
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auth->crealm = malloc(client->realm.length + 1);
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strncpy(auth->crealm, client->realm.data, client->realm.length);
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auth->crealm[client->realm.length] = '\0';
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krb5_principal2principalname(&auth->cname, client);
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gettimeofday(&tv, NULL);
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auth->cusec = tv.tv_usec;
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auth->ctime = tv.tv_sec;
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auth->subkey = NULL;
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auth->seq_number = NULL;
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auth->authorization_data = NULL;
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auth->cksum = cksum;
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memset (buf, 0, sizeof(buf));
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len = encode_Authenticator(buf + sizeof(buf) - 9,
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sizeof(buf) - 8 - 12,
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auth);
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p = buf + sizeof(buf) - 8 - len;
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p -= 12;
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len += 12;
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len = (len + 7) & ~7;
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crc_init_table ();
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crc = crc_update(p, len, 0);
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#if 0
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memcpy(p + 8, &crc, 4);
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#endif
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p[8] = crc & 0xff;
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p[9] = (crc >> 8) & 0xff;
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p[10] = (crc >> 16) & 0xff;
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p[11] = (crc >> 24) & 0xff;
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result->length = len;
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result->data = malloc(len);
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memcpy(result->data, p, len);
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return 0;
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}
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