1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/* Copyright (C) 2011 the GSS-PROXY contributors, see COPYING for license */
#include "gssapi_gpm.h"
#include "src/gp_conv.h"
OM_uint32 gpm_accept_sec_context(OM_uint32 *minor_status,
gssx_ctx **context_handle,
gssx_cred *acceptor_cred_handle,
gss_buffer_t input_token_buffer,
gss_channel_bindings_t input_chan_bindings,
gssx_name **src_name,
gss_OID *mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,
OM_uint32 *time_rec,
gssx_cred **delegated_cred_handle)
{
union gp_rpc_arg uarg;
union gp_rpc_res ures;
gssx_arg_accept_sec_context *arg = &uarg.accept_sec_context;
gssx_res_accept_sec_context *res = &ures.accept_sec_context;
gssx_ctx *ctx = NULL;
gssx_name *name = NULL;
gss_OID_desc *mech = NULL;
gss_buffer_t outbuf = NULL;
uint32_t ret_maj;
int ret;
memset(&uarg, 0, sizeof(union gp_rpc_arg));
memset(&ures, 0, sizeof(union gp_rpc_res));
/* prepare proxy request */
if (*context_handle) {
arg->context_handle = *context_handle;
}
if (acceptor_cred_handle) {
arg->cred_handle = acceptor_cred_handle;
}
ret = gp_conv_buffer_to_gssx(input_token_buffer, &arg->input_token);
if (ret) {
goto done;
}
if (input_chan_bindings) {
ret = gp_conv_cb_to_gssx_alloc(input_chan_bindings, &arg->input_cb);
if (ret) {
goto done;
}
}
/* execute proxy request */
ret = gpm_make_call(GSSX_ACCEPT_SEC_CONTEXT, &uarg, &ures);
if (ret) {
goto done;
}
/* return values */
if (res->status.major_status) {
gpm_save_status(&res->status);
ret_maj = res->status.major_status;
*minor_status = res->status.minor_status;
ret = 0;
goto done;
}
if (mech_type) {
if (res->status.mech.octet_string_len) {
ret = gp_conv_gssx_to_oid_alloc(&res->status.mech, &mech);
if (ret) {
goto done;
}
}
}
ctx = res->context_handle;
/* we are stealing the delegated creds on success, so we do not want
* it to be freed by xdr_free */
res->context_handle = NULL;
if (ctx == NULL) {
ret = EINVAL;
goto done;
}
if (src_name) {
ret = gp_copy_gssx_name_alloc(&ctx->src_name, &name);
if (ret) {
goto done;
}
}
ret = gp_conv_gssx_to_buffer_alloc(res->output_token, &outbuf);
if (ret) {
goto done;
}
if (mech_type) {
*mech_type = mech;
}
if (src_name) {
*src_name = name;
}
if (outbuf) {
*output_token = *outbuf;
free(outbuf);
}
if (ret_flags) {
*ret_flags = ctx->ctx_flags;
}
if (time_rec) {
*time_rec = ctx->lifetime;
}
if (res->delegated_cred_handle) {
if (delegated_cred_handle) {
*delegated_cred_handle = res->delegated_cred_handle;
}
/* we are stealing the delegated creds on success, so we do not want
* it to be freed by xdr_free */
res->delegated_cred_handle = NULL;
}
*minor_status = 0;
ret_maj = GSS_S_COMPLETE;
done:
/* we are putting our copy of these structures in here,
* and do not want it to be freed by xdr_free */
arg->context_handle = NULL;
arg->cred_handle = NULL;
gpm_free_xdrs(GSSX_ACCEPT_SEC_CONTEXT, &uarg, &ures);
if (ret) {
if (ctx) {
xdr_free((xdrproc_t)xdr_gssx_ctx, (char *)ctx);
free(ctx);
}
if (name) {
xdr_free((xdrproc_t)xdr_gssx_name, (char *)name);
free(name);
}
if (mech) {
free(mech->elements);
free(mech);
}
if (outbuf) {
free(outbuf->value);
free(outbuf);
}
*minor_status = ret;
return GSS_S_FAILURE;
}
/* always replace old ctx handle and set new */
if (*context_handle) {
xdr_free((xdrproc_t)xdr_gssx_ctx, (char *)*context_handle);
free(*context_handle);
}
*context_handle = ctx;
return ret_maj;
}
|
