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
165
166
167
168
169
170
|
/*
* Copyright (C) 2009,2010,2011,2014 Red Hat, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <nss.h>
#include <pk11pub.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <krb5.h>
#include <talloc.h>
#include "certread.h"
#include "certread-int.h"
#include "log.h"
#include "store.h"
#include "store-int.h"
#include "subproc.h"
#include "util-o.h"
struct cm_certread_state {
struct cm_certread_state_pvt pvt;
struct cm_store_entry *entry;
struct cm_subproc_state *subproc;
};
static int
cm_certread_o_main(int fd, struct cm_store_ca *ca, struct cm_store_entry *entry,
void *userdata)
{
FILE *pem, *fp;
X509 *cert;
int status, len;
char buf[LINE_MAX];
unsigned char *der;
long error;
if (entry->cm_cert_storage_location == NULL) {
cm_log(1, "Error reading certificate: no location "
"specified.\n");
_exit(1);
}
util_o_init();
ERR_load_crypto_strings();
status = 1;
fp = fdopen(fd, "w");
if (fp == NULL) {
cm_log(1, "Unable to initialize I/O.\n");
_exit(1);
}
pem = fopen(entry->cm_cert_storage_location, "r");
if (pem != NULL) {
cert = PEM_read_X509(pem, NULL, NULL, NULL);
if (cert != NULL) {
status = 0;
} else {
cm_log(1, "Internal error reading cert from \"%s\".\n",
entry->cm_cert_storage_location);
}
fclose(pem);
} else {
if (errno != ENOENT) {
cm_log(1, "Error opening cert file '%s' "
"for reading: %s.\n",
entry->cm_cert_storage_location,
strerror(errno));
}
cert = NULL;
}
if (status == 0) {
der = NULL;
len = i2d_X509(cert, &der);
cm_certread_n_parse(entry, der, len);
cm_certread_write_data_to_pipe(entry, fp);
} else {
while ((error = ERR_get_error()) != 0) {
ERR_error_string_n(error, buf, sizeof(buf));
cm_log(1, "%s\n", buf);
}
}
fclose(fp);
if (status != 0) {
_exit(status);
}
return 0;
}
/* Check if something changed, for example we finished reading the data we need
* from the cert. */
static int
cm_certread_o_ready(struct cm_certread_state *state)
{
return cm_subproc_ready(state->subproc);
}
/* Get a selectable-for-read descriptor we can poll for status changes. */
static int
cm_certread_o_get_fd(struct cm_certread_state *state)
{
return cm_subproc_get_fd(state->subproc);
}
/* Clean up after reading the certificate. */
static void
cm_certread_o_done(struct cm_certread_state *state)
{
if (state->subproc != NULL) {
cm_certread_read_data_from_buffer(state->entry,
cm_subproc_get_msg(state->subproc,
NULL));
cm_subproc_done(state->subproc);
}
talloc_free(state);
}
/* Start reading the certificate from the configured location. */
struct cm_certread_state *
cm_certread_o_start(struct cm_store_entry *entry)
{
struct cm_certread_state *state;
if (entry->cm_cert_storage_type != cm_cert_storage_file) {
cm_log(1, "Wrong read method: can only read certificates "
"from a file.\n");
return NULL;
}
state = talloc_ptrtype(entry, state);
if (state != NULL) {
memset(state, 0, sizeof(*state));
state->pvt.ready = cm_certread_o_ready;
state->pvt.get_fd= cm_certread_o_get_fd;
state->pvt.done= cm_certread_o_done;
state->entry = entry;
state->subproc = cm_subproc_start(cm_certread_o_main, state,
NULL, entry, NULL);
if (state->subproc == NULL) {
talloc_free(state);
state = NULL;
}
}
return state;
}
|
