2 * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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7 * modification, are permitted provided that the following conditions
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34 #include "krb5_locl.h"
37 * See `sendauth.c' for the format.
41 match_exact(const void *data
, const char *appl_version
)
43 return strcmp(data
, appl_version
) == 0;
46 krb5_error_code KRB5_LIB_FUNCTION
47 krb5_recvauth(krb5_context context
,
48 krb5_auth_context
*auth_context
,
50 const char *appl_version
,
51 krb5_principal server
,
56 return krb5_recvauth_match_version(context
, auth_context
, p_fd
,
57 match_exact
, appl_version
,
62 krb5_error_code KRB5_LIB_FUNCTION
63 krb5_recvauth_match_version(krb5_context context
,
64 krb5_auth_context
*auth_context
,
66 krb5_boolean (*match_appl_version
)(const void *,
68 const void *match_data
,
69 krb5_principal server
,
75 const char *version
= KRB5_SENDAUTH_VERSION
;
76 char her_version
[sizeof(KRB5_SENDAUTH_VERSION
)];
77 char *her_appl_version
;
81 krb5_flags ap_options
;
85 * If there are no addresses in auth_context, get them from `fd'.
88 if (*auth_context
== NULL
) {
89 ret
= krb5_auth_con_init (context
, auth_context
);
94 ret
= krb5_auth_con_setaddrs_from_fd (context
,
100 if(!(flags
& KRB5_RECVAUTH_IGNORE_VERSION
)) {
101 n
= krb5_net_read (context
, p_fd
, &len
, 4);
104 krb5_set_error_message(context
, ret
, "read: %s", strerror(ret
));
108 krb5_set_error_message(context
, KRB5_SENDAUTH_BADAUTHVERS
,
109 N_("Failed to receive sendauth data", ""));
110 return KRB5_SENDAUTH_BADAUTHVERS
;
113 if (len
!= sizeof(her_version
)
114 || krb5_net_read (context
, p_fd
, her_version
, len
) != len
115 || strncmp (version
, her_version
, len
)) {
117 krb5_net_write (context
, p_fd
, &repl
, 1);
118 krb5_clear_error_message (context
);
119 return KRB5_SENDAUTH_BADAUTHVERS
;
123 n
= krb5_net_read (context
, p_fd
, &len
, 4);
126 krb5_set_error_message(context
, ret
, "read: %s", strerror(ret
));
130 krb5_clear_error_message (context
);
131 return KRB5_SENDAUTH_BADAPPLVERS
;
134 her_appl_version
= malloc (len
);
135 if (her_appl_version
== NULL
) {
137 krb5_net_write (context
, p_fd
, &repl
, 1);
138 krb5_set_error_message(context
, ENOMEM
,
139 N_("malloc: out of memory", ""));
142 if (krb5_net_read (context
, p_fd
, her_appl_version
, len
) != len
143 || !(*match_appl_version
)(match_data
, her_appl_version
)) {
145 krb5_net_write (context
, p_fd
, &repl
, 1);
146 krb5_set_error_message(context
, KRB5_SENDAUTH_BADAPPLVERS
,
147 N_("wrong sendauth version (%s)", ""),
149 free (her_appl_version
);
150 return KRB5_SENDAUTH_BADAPPLVERS
;
152 free (her_appl_version
);
155 if (krb5_net_write (context
, p_fd
, &repl
, 1) != 1) {
157 krb5_set_error_message(context
, ret
, "write: %s", strerror(ret
));
161 krb5_data_zero (&data
);
162 ret
= krb5_read_message (context
, p_fd
, &data
);
166 ret
= krb5_rd_req (context
,
173 krb5_data_free (&data
);
175 krb5_data error_data
;
176 krb5_error_code ret2
;
178 ret2
= krb5_mk_error (context
,
188 krb5_write_message (context
, p_fd
, &error_data
);
189 krb5_data_free (&error_data
);
195 if (krb5_net_write (context
, p_fd
, &len
, 4) != 4) {
197 krb5_set_error_message(context
, ret
, "write: %s", strerror(ret
));
201 if (ap_options
& AP_OPTS_MUTUAL_REQUIRED
) {
202 ret
= krb5_mk_rep (context
, *auth_context
, &data
);
206 ret
= krb5_write_message (context
, p_fd
, &data
);
209 krb5_data_free (&data
);