/src/openssl/crypto/async/async_wait.c

Source (jump to first uncovered line)
/*
 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* This must be the first #include file */
#include "async_local.h"

#include <openssl/err.h>

ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void)
{
    return OPENSSL_zalloc(sizeof(ASYNC_WAIT_CTX));
}

void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx)
{
    struct fd_lookup_st *curr;
    struct fd_lookup_st *next;

    if (ctx == NULL)
        return;

    curr = ctx->fds;
    while (curr != NULL) {
        if (!curr->del) {
            /* Only try and cleanup if it hasn't been marked deleted */
            if (curr->cleanup != NULL)
                curr->cleanup(ctx, curr->key, curr->fd, curr->custom_data);
        }
        /* Always free the fd_lookup_st */
        next = curr->next;
        OPENSSL_free(curr);
        curr = next;
    }

    OPENSSL_free(ctx);
}
int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,
                               OSSL_ASYNC_FD fd, void *custom_data,
                               void (*cleanup)(ASYNC_WAIT_CTX *, const void *,
                                               OSSL_ASYNC_FD, void *))
{
    struct fd_lookup_st *fdlookup;

    if ((fdlookup = OPENSSL_zalloc(sizeof(*fdlookup))) == NULL)
        return 0;

    fdlookup->key = key;
    fdlookup->fd = fd;
    fdlookup->custom_data = custom_data;
    fdlookup->cleanup = cleanup;
    fdlookup->add = 1;
    fdlookup->next = ctx->fds;
    ctx->fds = fdlookup;
    ctx->numadd++;
    return 1;
}

int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,
                          OSSL_ASYNC_FD *fd, void **custom_data)
{
    struct fd_lookup_st *curr;

    curr = ctx->fds;
    while (curr != NULL) {
        if (curr->del) {
            /* This one has been marked deleted so do nothing */
            curr = curr->next;
            continue;
        }
        if (curr->key == key) {
            *fd = curr->fd;
            *custom_data = curr->custom_data;
            return 1;
        }
        curr = curr->next;
    }
    return 0;
}

int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,
                               size_t *numfds)
{
    struct fd_lookup_st *curr;

    curr = ctx->fds;
    *numfds = 0;
    while (curr != NULL) {
        if (curr->del) {
            /* This one has been marked deleted so do nothing */
            curr = curr->next;
            continue;
        }
        if (fd != NULL) {
            *fd = curr->fd;
            fd++;
        }
        (*numfds)++;
        curr = curr->next;
    }
    return 1;
}

int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,
                                   size_t *numaddfds, OSSL_ASYNC_FD *delfd,
                                   size_t *numdelfds)
{
    struct fd_lookup_st *curr;

    *numaddfds = ctx->numadd;
    *numdelfds = ctx->numdel;
    if (addfd == NULL && delfd == NULL)
        return 1;

    curr = ctx->fds;

    while (curr != NULL) {
        /* We ignore fds that have been marked as both added and deleted */
        if (curr->del && !curr->add && (delfd != NULL)) {
            *delfd = curr->fd;
            delfd++;
        }
        if (curr->add && !curr->del && (addfd != NULL)) {
            *addfd = curr->fd;
            addfd++;
        }
        curr = curr->next;
    }

    return 1;
}

int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key)
{
    struct fd_lookup_st *curr, *prev;

    curr = ctx->fds;
    prev = NULL;
    while (curr != NULL) {
        if (curr->del == 1) {
            /* This one has been marked deleted already so do nothing */
            prev = curr;
            curr = curr->next;
            continue;
        }
        if (curr->key == key) {
            /* If fd has just been added, remove it from the list */
            if (curr->add == 1) {
                if (ctx->fds == curr) {
                    ctx->fds = curr->next;
                } else {
                    prev->next = curr->next;
                }

                /* It is responsibility of the caller to cleanup before calling
                 * ASYNC_WAIT_CTX_clear_fd
                 */
                OPENSSL_free(curr);
                ctx->numadd--;
                return 1;
            }

            /*
             * Mark it as deleted. We don't call cleanup if explicitly asked
             * to clear an fd. We assume the caller is going to do that (if
             * appropriate).
             */
            curr->del = 1;
            ctx->numdel++;
            return 1;
        }
        prev = curr;
        curr = curr->next;
    }
    return 0;
}

int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx,
                                ASYNC_callback_fn callback,
                                void *callback_arg)
{
      if (ctx == NULL)
          return 0;

      ctx->callback = callback;
      ctx->callback_arg = callback_arg;
      return 1;
}

int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx,
                                ASYNC_callback_fn *callback,
                                void **callback_arg)
{
      if (ctx->callback == NULL)
          return 0;

      *callback = ctx->callback;
      *callback_arg = ctx->callback_arg;
      return 1;
}

int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status)
{
      ctx->status = status;
      return 1;
}

int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx)
{
      return ctx->status;
}

void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx)
{
    struct fd_lookup_st *curr, *prev = NULL;

    ctx->numadd = 0;
    ctx->numdel = 0;

    curr = ctx->fds;

    while (curr != NULL) {
        if (curr->del) {
            if (prev == NULL)
                ctx->fds = curr->next;
            else
                prev->next = curr->next;
            OPENSSL_free(curr);
            if (prev == NULL)
                curr = ctx->fds;
            else
                curr = prev->next;
            continue;
        }
        if (curr->add) {
            curr->add = 0;
        }
        prev = curr;
        curr = curr->next;
    }
}

Coverage Report

Created: 2024-11-21 07:03

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the Apache License 2.0 (the "License"). You may not use
5		* this file except in compliance with the License. You can obtain a copy
6		* in the file LICENSE in the source distribution or at
7		* https://www.openssl.org/source/license.html
8		*/
9
10		/* This must be the first #include file */
11		#include "async_local.h"
12
13		#include <openssl/err.h>
14
15		ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void)
16	0	{
17	0	return OPENSSL_zalloc(sizeof(ASYNC_WAIT_CTX));
18	0	}
19
20		void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx)
21	0	{
22	0	struct fd_lookup_st *curr;
23	0	struct fd_lookup_st *next;
24
25	0	if (ctx == NULL)
26	0	return;
27
28	0	curr = ctx->fds;
29	0	while (curr != NULL) {
30	0	if (!curr->del) {
31		/* Only try and cleanup if it hasn't been marked deleted */
32	0	if (curr->cleanup != NULL)
33	0	curr->cleanup(ctx, curr->key, curr->fd, curr->custom_data);
34	0	}
35		/* Always free the fd_lookup_st */
36	0	next = curr->next;
37	0	OPENSSL_free(curr);
38	0	curr = next;
39	0	}
40
41	0	OPENSSL_free(ctx);
42	0	}
43		int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX ctx, const void key,
44		OSSL_ASYNC_FD fd, void *custom_data,
45		void (cleanup)(ASYNC_WAIT_CTX , const void *,
46		OSSL_ASYNC_FD, void *))
47	0	{
48	0	struct fd_lookup_st *fdlookup;
49
50	0	if ((fdlookup = OPENSSL_zalloc(sizeof(*fdlookup))) == NULL)
51	0	return 0;
52
53	0	fdlookup->key = key;
54	0	fdlookup->fd = fd;
55	0	fdlookup->custom_data = custom_data;
56	0	fdlookup->cleanup = cleanup;
57	0	fdlookup->add = 1;
58	0	fdlookup->next = ctx->fds;
59	0	ctx->fds = fdlookup;
60	0	ctx->numadd++;
61	0	return 1;
62	0	}
63
64		int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX ctx, const void key,
65		OSSL_ASYNC_FD fd, void *custom_data)
66	0	{
67	0	struct fd_lookup_st *curr;
68
69	0	curr = ctx->fds;
70	0	while (curr != NULL) {
71	0	if (curr->del) {
72		/* This one has been marked deleted so do nothing */
73	0	curr = curr->next;
74	0	continue;
75	0	}
76	0	if (curr->key == key) {
77	0	*fd = curr->fd;
78	0	*custom_data = curr->custom_data;
79	0	return 1;
80	0	}
81	0	curr = curr->next;
82	0	}
83	0	return 0;
84	0	}
85
86		int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX ctx, OSSL_ASYNC_FD fd,
87		size_t *numfds)
88	0	{
89	0	struct fd_lookup_st *curr;
90
91	0	curr = ctx->fds;
92	0	*numfds = 0;
93	0	while (curr != NULL) {
94	0	if (curr->del) {
95		/* This one has been marked deleted so do nothing */
96	0	curr = curr->next;
97	0	continue;
98	0	}
99	0	if (fd != NULL) {
100	0	*fd = curr->fd;
101	0	fd++;
102	0	}
103	0	(*numfds)++;
104	0	curr = curr->next;
105	0	}
106	0	return 1;
107	0	}
108
109		int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX ctx, OSSL_ASYNC_FD addfd,
110		size_t numaddfds, OSSL_ASYNC_FD delfd,
111		size_t *numdelfds)
112	0	{
113	0	struct fd_lookup_st *curr;
114
115	0	*numaddfds = ctx->numadd;
116	0	*numdelfds = ctx->numdel;
117	0	if (addfd == NULL && delfd == NULL)
118	0	return 1;
119
120	0	curr = ctx->fds;
121
122	0	while (curr != NULL) {
123		/* We ignore fds that have been marked as both added and deleted */
124	0	if (curr->del && !curr->add && (delfd != NULL)) {
125	0	*delfd = curr->fd;
126	0	delfd++;
127	0	}
128	0	if (curr->add && !curr->del && (addfd != NULL)) {
129	0	*addfd = curr->fd;
130	0	addfd++;
131	0	}
132	0	curr = curr->next;
133	0	}
134
135	0	return 1;
136	0	}
137
138		int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX ctx, const void key)
139	0	{
140	0	struct fd_lookup_st curr, prev;
141
142	0	curr = ctx->fds;
143	0	prev = NULL;
144	0	while (curr != NULL) {
145	0	if (curr->del == 1) {
146		/* This one has been marked deleted already so do nothing */
147	0	prev = curr;
148	0	curr = curr->next;
149	0	continue;
150	0	}
151	0	if (curr->key == key) {
152		/* If fd has just been added, remove it from the list */
153	0	if (curr->add == 1) {
154	0	if (ctx->fds == curr) {
155	0	ctx->fds = curr->next;
156	0	} else {
157	0	prev->next = curr->next;
158	0	}
159
160		/* It is responsibility of the caller to cleanup before calling
161		* ASYNC_WAIT_CTX_clear_fd
162		*/
163	0	OPENSSL_free(curr);
164	0	ctx->numadd--;
165	0	return 1;
166	0	}
167
168		/*
169		* Mark it as deleted. We don't call cleanup if explicitly asked
170		* to clear an fd. We assume the caller is going to do that (if
171		* appropriate).
172		*/
173	0	curr->del = 1;
174	0	ctx->numdel++;
175	0	return 1;
176	0	}
177	0	prev = curr;
178	0	curr = curr->next;
179	0	}
180	0	return 0;
181	0	}
182
183		int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx,
184		ASYNC_callback_fn callback,
185		void *callback_arg)
186	0	{
187	0	if (ctx == NULL)
188	0	return 0;
189
190	0	ctx->callback = callback;
191	0	ctx->callback_arg = callback_arg;
192	0	return 1;
193	0	}
194
195		int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx,
196		ASYNC_callback_fn *callback,
197		void **callback_arg)
198	0	{
199	0	if (ctx->callback == NULL)
200	0	return 0;
201
202	0	*callback = ctx->callback;
203	0	*callback_arg = ctx->callback_arg;
204	0	return 1;
205	0	}
206
207		int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status)
208	0	{
209	0	ctx->status = status;
210	0	return 1;
211	0	}
212
213		int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx)
214	0	{
215	0	return ctx->status;
216	0	}
217
218		void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx)
219	0	{
220	0	struct fd_lookup_st curr, prev = NULL;
221
222	0	ctx->numadd = 0;
223	0	ctx->numdel = 0;
224
225	0	curr = ctx->fds;
226
227	0	while (curr != NULL) {
228	0	if (curr->del) {
229	0	if (prev == NULL)
230	0	ctx->fds = curr->next;
231	0	else
232	0	prev->next = curr->next;
233	0	OPENSSL_free(curr);
234	0	if (prev == NULL)
235	0	curr = ctx->fds;
236	0	else
237	0	curr = prev->next;
238	0	continue;
239	0	}
240	0	if (curr->add) {
241	0	curr->add = 0;
242	0	}
243	0	prev = curr;
244	0	curr = curr->next;
245	0	}
246	0	}