/src/samba/third_party/heimdal/lib/hx509/lock.c

Source
/*
 * Copyright (c) 2005 - 2006 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "hx_locl.h"

/**
 * @page page_lock Locking and unlocking certificates and encrypted data.
 *
 * See the library functions here: @ref hx509_lock
 */

struct hx509_lock_data {
    struct _hx509_password password;
    hx509_certs certs;
    hx509_prompter_fct prompt;
    void *prompt_data;
};

static struct hx509_lock_data empty_lock_data = {
    { 0, NULL },
    NULL,
    NULL,
    NULL
};

hx509_lock _hx509_empty_lock = &empty_lock_data;

/*
 *
 */

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_init(hx509_context context, hx509_lock *lock)
{
    hx509_lock l;
    int ret;

    *lock = NULL;

    l = calloc(1, sizeof(*l));
    if (l == NULL)
  return ENOMEM;

    ret = hx509_certs_init(context,
         "MEMORY:locks-internal",
         0,
         NULL,
         &l->certs);
    if (ret) {
  free(l);
  return ret;
    }

    *lock = l;

    return 0;
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_add_password(hx509_lock lock, const char *password)
{
    void *d;
    char *s;

    s = strdup(password);
    if (s == NULL)
  return ENOMEM;

    d = realloc(lock->password.val,
    (lock->password.len + 1) * sizeof(lock->password.val[0]));
    if (d == NULL) {
  free(s);
  return ENOMEM;
    }
    lock->password.val = d;
    lock->password.val[lock->password.len] = s;
    lock->password.len++;

    return 0;
}

HX509_LIB_FUNCTION const struct _hx509_password * HX509_LIB_CALL
_hx509_lock_get_passwords(hx509_lock lock)
{
    return &lock->password;
}

HX509_LIB_FUNCTION hx509_certs HX509_LIB_CALL
_hx509_lock_unlock_certs(hx509_lock lock)
{
    return lock->certs;
}

HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_lock_reset_passwords(hx509_lock lock)
{
    size_t i;
    for (i = 0; i < lock->password.len; i++)
  free(lock->password.val[i]);
    free(lock->password.val);
    lock->password.val = NULL;
    lock->password.len = 0;
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_add_cert(hx509_context context, hx509_lock lock, hx509_cert cert)
{
    return hx509_certs_add(context, lock->certs, cert);
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_add_certs(hx509_context context, hx509_lock lock, hx509_certs certs)
{
    return hx509_certs_merge(context, lock->certs, certs);
}

HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_lock_reset_certs(hx509_context context, hx509_lock lock)
{
    hx509_certs certs = lock->certs;
    int ret;

    ret = hx509_certs_init(context,
         "MEMORY:locks-internal",
         0,
         NULL,
         &lock->certs);
    if (ret == 0)
  hx509_certs_free(&certs);
    else
  lock->certs = certs;
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
_hx509_lock_find_cert(hx509_lock lock, const hx509_query *q, hx509_cert *c)
{
    *c = NULL;
    return 0;
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_set_prompter(hx509_lock lock, hx509_prompter_fct prompt, void *data)
{
    lock->prompt = prompt;
    lock->prompt_data = data;
    return 0;
}

HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_lock_reset_promper(hx509_lock lock)
{
    lock->prompt = NULL;
    lock->prompt_data = NULL;
}

static int
default_prompter(void *data, const hx509_prompt *prompter)
{
    if (hx509_prompt_hidden(prompter->type)) {
  if(UI_UTIL_read_pw_string(prompter->reply.data,
          prompter->reply.length,
          prompter->prompt,
          0))
      return 1;
    } else {
  char *s = prompter->reply.data;

  fputs (prompter->prompt, stdout);
  fflush (stdout);
  if(fgets(prompter->reply.data,
     prompter->reply.length,
     stdin) == NULL)
      return 1;
  s[strcspn(s, "\n")] = '\0';
    }
    return 0;
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_prompt(hx509_lock lock, hx509_prompt *prompt)
{
    if (lock->prompt == NULL)
  return HX509_CRYPTO_NO_PROMPTER;
    return (*lock->prompt)(lock->prompt_data, prompt);
}

HX509_LIB_FUNCTION void HX509_LIB_CALL
hx509_lock_free(hx509_lock lock)
{
    if (lock) {
  hx509_certs_free(&lock->certs);
  hx509_lock_reset_passwords(lock);
  memset(lock, 0, sizeof(*lock));
  free(lock);
    }
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_prompt_hidden(hx509_prompt_type type)
{
    /* default to hidden if unknown */

    switch (type) {
    case HX509_PROMPT_TYPE_QUESTION:
    case HX509_PROMPT_TYPE_INFO:
  return 0;
    default:
  return 1;
    }
}

HX509_LIB_FUNCTION int HX509_LIB_CALL
hx509_lock_command_string(hx509_lock lock, const char *string)
{
    if (strncasecmp(string, "PASS:", 5) == 0) {
  hx509_lock_add_password(lock, string + 5);
    } else if (strcasecmp(string, "PROMPT") == 0) {
  hx509_lock_set_prompter(lock, default_prompter, NULL);
    } else
  return HX509_UNKNOWN_LOCK_COMMAND;
    return 0;
}

Coverage Report

Created: 2026-01-16 06:47

Line	Count	Source
1		/*
2		* Copyright (c) 2005 - 2006 Kungliga Tekniska Högskolan
3		* (Royal Institute of Technology, Stockholm, Sweden).
4		* All rights reserved.
5		*
6		* Redistribution and use in source and binary forms, with or without
7		* modification, are permitted provided that the following conditions
8		* are met:
9		*
10		* 1. Redistributions of source code must retain the above copyright
11		* notice, this list of conditions and the following disclaimer.
12		*
13		* 2. Redistributions in binary form must reproduce the above copyright
14		* notice, this list of conditions and the following disclaimer in the
15		* documentation and/or other materials provided with the distribution.
16		*
17		* 3. Neither the name of the Institute nor the names of its contributors
18		* may be used to endorse or promote products derived from this software
19		* without specific prior written permission.
20		*
21		* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24		* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31		* SUCH DAMAGE.
32		*/
33
34		#include "hx_locl.h"
35
36		/**
37		* @page page_lock Locking and unlocking certificates and encrypted data.
38		*
39		* See the library functions here: @ref hx509_lock
40		*/
41
42		struct hx509_lock_data {
43		struct _hx509_password password;
44		hx509_certs certs;
45		hx509_prompter_fct prompt;
46		void *prompt_data;
47		};
48
49		static struct hx509_lock_data empty_lock_data = {
50		{ 0, NULL },
51		NULL,
52		NULL,
53		NULL
54		};
55
56		hx509_lock _hx509_empty_lock = &empty_lock_data;
57
58		/*
59		*
60		*/
61
62		HX509_LIB_FUNCTION int HX509_LIB_CALL
63		hx509_lock_init(hx509_context context, hx509_lock *lock)
64	0	{
65	0	hx509_lock l;
66	0	int ret;
67
68	0	*lock = NULL;
69
70	0	l = calloc(1, sizeof(*l));
71	0	if (l == NULL)
72	0	return ENOMEM;
73
74	0	ret = hx509_certs_init(context,
75	0	"MEMORY:locks-internal",
76	0	0,
77	0	NULL,
78	0	&l->certs);
79	0	if (ret) {
80	0	free(l);
81	0	return ret;
82	0	}
83
84	0	*lock = l;
85
86	0	return 0;
87	0	}
88
89		HX509_LIB_FUNCTION int HX509_LIB_CALL
90		hx509_lock_add_password(hx509_lock lock, const char *password)
91	0	{
92	0	void *d;
93	0	char *s;
94
95	0	s = strdup(password);
96	0	if (s == NULL)
97	0	return ENOMEM;
98
99	0	d = realloc(lock->password.val,
100	0	(lock->password.len + 1) * sizeof(lock->password.val[0]));
101	0	if (d == NULL) {
102	0	free(s);
103	0	return ENOMEM;
104	0	}
105	0	lock->password.val = d;
106	0	lock->password.val[lock->password.len] = s;
107	0	lock->password.len++;
108
109	0	return 0;
110	0	}
111
112		HX509_LIB_FUNCTION const struct _hx509_password * HX509_LIB_CALL
113		_hx509_lock_get_passwords(hx509_lock lock)
114	0	{
115	0	return &lock->password;
116	0	}
117
118		HX509_LIB_FUNCTION hx509_certs HX509_LIB_CALL
119		_hx509_lock_unlock_certs(hx509_lock lock)
120	0	{
121	0	return lock->certs;
122	0	}
123
124		HX509_LIB_FUNCTION void HX509_LIB_CALL
125		hx509_lock_reset_passwords(hx509_lock lock)
126	0	{
127	0	size_t i;
128	0	for (i = 0; i < lock->password.len; i++)
129	0	free(lock->password.val[i]);
130	0	free(lock->password.val);
131	0	lock->password.val = NULL;
132	0	lock->password.len = 0;
133	0	}
134
135		HX509_LIB_FUNCTION int HX509_LIB_CALL
136		hx509_lock_add_cert(hx509_context context, hx509_lock lock, hx509_cert cert)
137	0	{
138	0	return hx509_certs_add(context, lock->certs, cert);
139	0	}
140
141		HX509_LIB_FUNCTION int HX509_LIB_CALL
142		hx509_lock_add_certs(hx509_context context, hx509_lock lock, hx509_certs certs)
143	0	{
144	0	return hx509_certs_merge(context, lock->certs, certs);
145	0	}
146
147		HX509_LIB_FUNCTION void HX509_LIB_CALL
148		hx509_lock_reset_certs(hx509_context context, hx509_lock lock)
149	0	{
150	0	hx509_certs certs = lock->certs;
151	0	int ret;
152
153	0	ret = hx509_certs_init(context,
154	0	"MEMORY:locks-internal",
155	0	0,
156	0	NULL,
157	0	&lock->certs);
158	0	if (ret == 0)
159	0	hx509_certs_free(&certs);
160	0	else
161	0	lock->certs = certs;
162	0	}
163
164		HX509_LIB_FUNCTION int HX509_LIB_CALL
165		_hx509_lock_find_cert(hx509_lock lock, const hx509_query q, hx509_cert c)
166	0	{
167	0	*c = NULL;
168	0	return 0;
169	0	}
170
171		HX509_LIB_FUNCTION int HX509_LIB_CALL
172		hx509_lock_set_prompter(hx509_lock lock, hx509_prompter_fct prompt, void *data)
173	0	{
174	0	lock->prompt = prompt;
175	0	lock->prompt_data = data;
176	0	return 0;
177	0	}
178
179		HX509_LIB_FUNCTION void HX509_LIB_CALL
180		hx509_lock_reset_promper(hx509_lock lock)
181	0	{
182	0	lock->prompt = NULL;
183	0	lock->prompt_data = NULL;
184	0	}
185
186		static int
187		default_prompter(void data, const hx509_prompt prompter)
188	0	{
189	0	if (hx509_prompt_hidden(prompter->type)) {
190	0	if(UI_UTIL_read_pw_string(prompter->reply.data,
191	0	prompter->reply.length,
192	0	prompter->prompt,
193	0	0))
194	0	return 1;
195	0	} else {
196	0	char *s = prompter->reply.data;
197
198	0	fputs (prompter->prompt, stdout);
199	0	fflush (stdout);
200	0	if(fgets(prompter->reply.data,
201	0	prompter->reply.length,
202	0	stdin) == NULL)
203	0	return 1;
204	0	s[strcspn(s, "\n")] = '\0';
205	0	}
206	0	return 0;
207	0	}
208
209		HX509_LIB_FUNCTION int HX509_LIB_CALL
210		hx509_lock_prompt(hx509_lock lock, hx509_prompt *prompt)
211	0	{
212	0	if (lock->prompt == NULL)
213	0	return HX509_CRYPTO_NO_PROMPTER;
214	0	return (*lock->prompt)(lock->prompt_data, prompt);
215	0	}
216
217		HX509_LIB_FUNCTION void HX509_LIB_CALL
218		hx509_lock_free(hx509_lock lock)
219	0	{
220	0	if (lock) {
221	0	hx509_certs_free(&lock->certs);
222	0	hx509_lock_reset_passwords(lock);
223	0	memset(lock, 0, sizeof(*lock));
224	0	free(lock);
225	0	}
226	0	}
227
228		HX509_LIB_FUNCTION int HX509_LIB_CALL
229		hx509_prompt_hidden(hx509_prompt_type type)
230	0	{
231		/* default to hidden if unknown */
232
233	0	switch (type) {
234	0	case HX509_PROMPT_TYPE_QUESTION:
235	0	case HX509_PROMPT_TYPE_INFO:
236	0	return 0;
237	0	default:
238	0	return 1;
239	0	}
240	0	}
241
242		HX509_LIB_FUNCTION int HX509_LIB_CALL
243		hx509_lock_command_string(hx509_lock lock, const char *string)
244	0	{
245	0	if (strncasecmp(string, "PASS:", 5) == 0) {
246	0	hx509_lock_add_password(lock, string + 5);
247	0	} else if (strcasecmp(string, "PROMPT") == 0) {
248	0	hx509_lock_set_prompter(lock, default_prompter, NULL);
249	0	} else
250	0	return HX509_UNKNOWN_LOCK_COMMAND;
251	0	return 0;
252	0	}