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

Source (jump to first uncovered line)
/*
 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (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_locl.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) {
        ASYNCerr(ASYNC_F_ASYNC_WAIT_CTX_SET_WAIT_FD, ERR_R_MALLOC_FAILURE);
        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;
}

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: 2018-08-29 13:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
3		*
4		* Licensed under the OpenSSL license (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_locl.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	0
25	0	if (ctx == NULL)
26	0	return;
27	0
28	0	curr = ctx->fds;
29	0	while (curr != NULL) {
30	0	if (!curr->del) {
31	0	/* 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	0	/* Always free the fd_lookup_st */
36	0	next = curr->next;
37	0	OPENSSL_free(curr);
38	0	curr = next;
39	0	}
40	0
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	0
50	0	if ((fdlookup = OPENSSL_zalloc(sizeof(*fdlookup))) == NULL) {
51	0	ASYNCerr(ASYNC_F_ASYNC_WAIT_CTX_SET_WAIT_FD, ERR_R_MALLOC_FAILURE);
52	0	return 0;
53	0	}
54	0
55	0	fdlookup->key = key;
56	0	fdlookup->fd = fd;
57	0	fdlookup->custom_data = custom_data;
58	0	fdlookup->cleanup = cleanup;
59	0	fdlookup->add = 1;
60	0	fdlookup->next = ctx->fds;
61	0	ctx->fds = fdlookup;
62	0	ctx->numadd++;
63	0	return 1;
64	0	}
65
66		int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX ctx, const void key,
67		OSSL_ASYNC_FD fd, void *custom_data)
68	0	{
69	0	struct fd_lookup_st *curr;
70	0
71	0	curr = ctx->fds;
72	0	while (curr != NULL) {
73	0	if (curr->del) {
74	0	/* This one has been marked deleted so do nothing */
75	0	curr = curr->next;
76	0	continue;
77	0	}
78	0	if (curr->key == key) {
79	0	*fd = curr->fd;
80	0	*custom_data = curr->custom_data;
81	0	return 1;
82	0	}
83	0	curr = curr->next;
84	0	}
85	0	return 0;
86	0	}
87
88		int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX ctx, OSSL_ASYNC_FD fd,
89		size_t *numfds)
90	0	{
91	0	struct fd_lookup_st *curr;
92	0
93	0	curr = ctx->fds;
94	0	*numfds = 0;
95	0	while (curr != NULL) {
96	0	if (curr->del) {
97	0	/* This one has been marked deleted so do nothing */
98	0	curr = curr->next;
99	0	continue;
100	0	}
101	0	if (fd != NULL) {
102	0	*fd = curr->fd;
103	0	fd++;
104	0	}
105	0	(*numfds)++;
106	0	curr = curr->next;
107	0	}
108	0	return 1;
109	0	}
110
111		int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX ctx, OSSL_ASYNC_FD addfd,
112		size_t numaddfds, OSSL_ASYNC_FD delfd,
113		size_t *numdelfds)
114	0	{
115	0	struct fd_lookup_st *curr;
116	0
117	0	*numaddfds = ctx->numadd;
118	0	*numdelfds = ctx->numdel;
119	0	if (addfd == NULL && delfd == NULL)
120	0	return 1;
121	0
122	0	curr = ctx->fds;
123	0
124	0	while (curr != NULL) {
125	0	/* We ignore fds that have been marked as both added and deleted */
126	0	if (curr->del && !curr->add && (delfd != NULL)) {
127	0	*delfd = curr->fd;
128	0	delfd++;
129	0	}
130	0	if (curr->add && !curr->del && (addfd != NULL)) {
131	0	*addfd = curr->fd;
132	0	addfd++;
133	0	}
134	0	curr = curr->next;
135	0	}
136	0
137	0	return 1;
138	0	}
139
140		int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX ctx, const void key)
141	0	{
142	0	struct fd_lookup_st curr, prev;
143	0
144	0	curr = ctx->fds;
145	0	prev = NULL;
146	0	while (curr != NULL) {
147	0	if (curr->del == 1) {
148	0	/* This one has been marked deleted already so do nothing */
149	0	prev = curr;
150	0	curr = curr->next;
151	0	continue;
152	0	}
153	0	if (curr->key == key) {
154	0	/* If fd has just been added, remove it from the list */
155	0	if (curr->add == 1) {
156	0	if (ctx->fds == curr) {
157	0	ctx->fds = curr->next;
158	0	} else {
159	0	prev->next = curr->next;
160	0	}
161	0
162	0	/* It is responsibility of the caller to cleanup before calling
163	0	* ASYNC_WAIT_CTX_clear_fd
164	0	*/
165	0	OPENSSL_free(curr);
166	0	ctx->numadd--;
167	0	return 1;
168	0	}
169	0
170	0	/*
171	0	* Mark it as deleted. We don't call cleanup if explicitly asked
172	0	* to clear an fd. We assume the caller is going to do that (if
173	0	* appropriate).
174	0	*/
175	0	curr->del = 1;
176	0	ctx->numdel++;
177	0	return 1;
178	0	}
179	0	prev = curr;
180	0	curr = curr->next;
181	0	}
182	0	return 0;
183	0	}
184
185		void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx)
186	0	{
187	0	struct fd_lookup_st curr, prev = NULL;
188	0
189	0	ctx->numadd = 0;
190	0	ctx->numdel = 0;
191	0
192	0	curr = ctx->fds;
193	0
194	0	while (curr != NULL) {
195	0	if (curr->del) {
196	0	if (prev == NULL)
197	0	ctx->fds = curr->next;
198	0	else
199	0	prev->next = curr->next;
200	0	OPENSSL_free(curr);
201	0	if (prev == NULL)
202	0	curr = ctx->fds;
203	0	else
204	0	curr = prev->next;
205	0	continue;
206	0	}
207	0	if (curr->add) {
208	0	curr->add = 0;
209	0	}
210	0	prev = curr;
211	0	curr = curr->next;
212	0	}
213	0	}