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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18 * may be used to endorse or promote products derived from this software
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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_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
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));
198 krb5_free_ticket(context, *ticket);
203 if (ap_options & AP_OPTS_MUTUAL_REQUIRED) {
204 ret = krb5_mk_rep (context, *auth_context, &data);
206 krb5_free_ticket(context, *ticket);
211 ret = krb5_write_message (context, p_fd, &data);
213 krb5_free_ticket(context, *ticket);
217 krb5_data_free (&data);