0d38e68dba
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@1967 ec53bebd-3082-4978-b11e-865c3cabbd6b
109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
#include "krb5_locl.h"
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RCSID("$Id$");
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/*
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* See `sendauth.c' for the format.
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*/
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krb5_error_code
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krb5_recvauth(krb5_context context,
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krb5_auth_context *auth_context,
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krb5_pointer p_fd,
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char *appl_version,
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krb5_principal server,
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int32_t flags,
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krb5_keytab keytab,
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krb5_ticket **ticket)
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{
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krb5_error_code ret;
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const char *version = KRB5_SENDAUTH_VERSION;
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char her_version[sizeof(KRB5_SENDAUTH_VERSION)];
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char *her_appl_version;
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int fd = *((int *)p_fd);
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u_int32_t len;
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u_char repl;
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krb5_data data;
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krb5_flags ap_options;
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if(!(flags & KRB5_RECVAUTH_IGNORE_VERSION)) {
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if (krb5_net_read (context, fd, &len, 4) != 4)
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return errno;
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len = ntohl(len);
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if (len != sizeof(her_version)
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|| krb5_net_read (context, fd, her_version, len) != len
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|| strncmp (version, her_version, len)) {
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repl = 1;
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krb5_net_write (context, fd, &repl, 1);
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return KRB5_SENDAUTH_BADAUTHVERS;
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}
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}
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if (krb5_net_read (context, fd, &len, 4) != 4)
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return errno;
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len = ntohl(len);
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if (len != strlen(appl_version) + 1) {
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repl = 2;
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krb5_net_write (context, fd, &repl, 1);
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return KRB5_SENDAUTH_BADAPPLVERS;
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}
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her_appl_version = malloc (len);
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if (her_appl_version == NULL) {
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repl = 2;
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krb5_net_write (context, fd, &repl, 1);
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return ENOMEM;
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}
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if (krb5_net_read (context, fd, her_appl_version, len) != len
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|| strcmp (appl_version, her_appl_version)) {
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repl = 2;
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krb5_net_write (context, fd, &repl, 1);
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free (her_appl_version);
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return KRB5_SENDAUTH_BADAPPLVERS;
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}
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free (her_appl_version);
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repl = 0;
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if (krb5_net_write (context, fd, &repl, 1) != 1)
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return errno;
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if (krb5_net_read (context, fd, &len, 4) != 4)
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return errno;
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len = ntohl(len);
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data.length = len;
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data.data = malloc (len);
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if (data.data == NULL)
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return ENOMEM;
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if (krb5_net_read (context, fd, data.data, len) != len)
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return errno;
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ret = krb5_rd_req (context,
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auth_context,
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&data,
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server,
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keytab,
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&ap_options,
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ticket);
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krb5_data_free (&data);
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if (ret)
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return ret;
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len = 0;
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if (krb5_net_write (context, fd, &len, 4) != 4)
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return errno;
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if (ap_options & AP_OPTS_MUTUAL_REQUIRED) {
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ret = krb5_mk_rep (context, auth_context, &data);
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if (ret)
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return ret;
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len = htonl(data.length);
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if (krb5_net_write (context, fd, &len, 4) != 4
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|| krb5_net_write (context, fd, data.data, data.length) != data.length)
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return errno;
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krb5_data_free (&data);
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}
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return 0;
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}
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