Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/ssh/lib/../sshbuf-misc.c	Lines:	30	70	42.9 %
Date:	2017-11-07	Branches:	15	50	30.0 %


/*	$OpenBSD: sshbuf-misc.c,v 1.6 2016/05/02 08:49:03 djm Exp $	*/
/*
 * Copyright (c) 2011 Damien Miller
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <limits.h>
#include <string.h>
#include <resolv.h>
#include <ctype.h>

#include "ssherr.h"
#define SSHBUF_INTERNAL
#include "sshbuf.h"

void
sshbuf_dump_data(const void *s, size_t len, FILE *f)
{
	size_t i, j;
	const u_char *p = (const u_char *)s;

	for (i = 0; i < len; i += 16) {
		fprintf(f, "%.4zu: ", i);
		for (j = i; j < i + 16; j++) {
			if (j < len)
				fprintf(f, "%02x ", p[j]);
			else
				fprintf(f, "   ");
		}
		fprintf(f, " ");
		for (j = i; j < i + 16; j++) {
			if (j < len) {
				if  (isascii(p[j]) && isprint(p[j]))
					fprintf(f, "%c", p[j]);
				else
					fprintf(f, ".");
			}
		}
		fprintf(f, "\n");
	}
}

void
sshbuf_dump(struct sshbuf *buf, FILE *f)
{
	fprintf(f, "buffer %p len = %zu\n", buf, sshbuf_len(buf));
	sshbuf_dump_data(sshbuf_ptr(buf), sshbuf_len(buf), f);
}

char *
sshbuf_dtob16(struct sshbuf *buf)
{
	size_t i, j, len = sshbuf_len(buf);
	const u_char *p = sshbuf_ptr(buf);
	char *ret;
	const char hex[] = "0123456789abcdef";

	if (len == 0)
		return strdup("");
	if (SIZE_MAX / 2 <= len || (ret = malloc(len * 2 + 1)) == NULL)
		return NULL;
	for (i = j = 0; i < len; i++) {
		ret[j++] = hex[(p[i] >> 4) & 0xf];
		ret[j++] = hex[p[i] & 0xf];
	}
	ret[j] = '\0';
	return ret;
}

char *
sshbuf_dtob64(struct sshbuf *buf)
{
	size_t len = sshbuf_len(buf), plen;
	const u_char *p = sshbuf_ptr(buf);
	char *ret;
	int r;

	if (len == 0)
		return strdup("");
	plen = ((len + 2) / 3) * 4 + 1;
	if (SIZE_MAX / 2 <= len || (ret = malloc(plen)) == NULL)
		return NULL;
	if ((r = b64_ntop(p, len, ret, plen)) == -1) {
		explicit_bzero(ret, plen);
		free(ret);
		return NULL;
	}
	return ret;
}

int
sshbuf_b64tod(struct sshbuf *buf, const char *b64)
{
	size_t plen = strlen(b64);
	int nlen, r;
	u_char *p;

	if (plen == 0)
		return 0;
	if ((p = malloc(plen)) == NULL)
		return SSH_ERR_ALLOC_FAIL;
	if ((nlen = b64_pton(b64, p, plen)) < 0) {
		explicit_bzero(p, plen);
		free(p);
		return SSH_ERR_INVALID_FORMAT;
	}
	if ((r = sshbuf_put(buf, p, nlen)) < 0) {
		explicit_bzero(p, plen);
		free(p);
		return r;
	}
	explicit_bzero(p, plen);
	free(p);
	return 0;
}

char *
sshbuf_dup_string(struct sshbuf *buf)
{
	const u_char *p = NULL, *s = sshbuf_ptr(buf);
	size_t l = sshbuf_len(buf);
	char *r;

	if (s == NULL || l > SIZE_MAX)
		return NULL;
	/* accept a nul only as the last character in the buffer */
	if (l > 0 && (p = memchr(s, '\0', l)) != NULL) {
		if (p != s + l - 1)
			return NULL;
		l--; /* the nul is put back below */
	}
	if ((r = malloc(l + 1)) == NULL)
		return NULL;
	if (l > 0)
		memcpy(r, s, l);
	r[l] = '\0';
	return r;
}



Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: sshbuf-misc.c,v 1.6 2016/05/02 08:49:03 djm Exp $ */
2			/*
3			* Copyright (c) 2011 Damien Miller
4			*
5			* Permission to use, copy, modify, and distribute this software for any
6			* purpose with or without fee is hereby granted, provided that the above
7			* copyright notice and this permission notice appear in all copies.
8			*
9			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16			*/
17
18			#include <sys/types.h>
19			#include <sys/socket.h>
20			#include <netinet/in.h>
21			#include <errno.h>
22			#include <stdlib.h>
23			#include <stdint.h>
24			#include <stdio.h>
25			#include <limits.h>
26			#include <string.h>
27			#include <resolv.h>
28			#include <ctype.h>
29
30			#include "ssherr.h"
31			#define SSHBUF_INTERNAL
32			#include "sshbuf.h"
33
34			void
35			sshbuf_dump_data(const void s, size_t len, FILE f)
36			{
37			size_t i, j;
38			const u_char p = (const u_char )s;
39
40			for (i = 0; i < len; i += 16) {
41			fprintf(f, "%.4zu: ", i);
42			for (j = i; j < i + 16; j++) {
43			if (j < len)
44			fprintf(f, "%02x ", p[j]);
45			else
46			fprintf(f, " ");
47			}
48			fprintf(f, " ");
49			for (j = i; j < i + 16; j++) {
50			if (j < len) {
51			if (isascii(p[j]) && isprint(p[j]))
52			fprintf(f, "%c", p[j]);
53			else
54			fprintf(f, ".");
55			}
56			}
57			fprintf(f, "\n");
58			}
59			}
60
61			void
62			sshbuf_dump(struct sshbuf buf, FILE f)
63			{
64			fprintf(f, "buffer %p len = %zu\n", buf, sshbuf_len(buf));
65			sshbuf_dump_data(sshbuf_ptr(buf), sshbuf_len(buf), f);
66			}
67
68			char *
69			sshbuf_dtob16(struct sshbuf *buf)
70			{
71			size_t i, j, len = sshbuf_len(buf);
72			const u_char *p = sshbuf_ptr(buf);
73			char *ret;
74			const char hex[] = "0123456789abcdef";
75
76			if (len == 0)
77			return strdup("");
78			if (SIZE_MAX / 2 <= len \|\| (ret = malloc(len * 2 + 1)) == NULL)
79			return NULL;
80			for (i = j = 0; i < len; i++) {
81			ret[j++] = hex[(p[i] >> 4) & 0xf];
82			ret[j++] = hex[p[i] & 0xf];
83			}
84			ret[j] = '\0';
85			return ret;
86			}
87
88			char *
89			sshbuf_dtob64(struct sshbuf *buf)
90			{
91		70	size_t len = sshbuf_len(buf), plen;
92		35	const u_char *p = sshbuf_ptr(buf);
93			char *ret;
94			int r;
95
96	✗✓	35	if (len == 0)
97			return strdup("");
98		35	plen = ((len + 2) / 3) * 4 + 1;
99	✓✗✗✓	70	if (SIZE_MAX / 2 <= len \|\| (ret = malloc(plen)) == NULL)
100			return NULL;
101	✗✓	35	if ((r = b64_ntop(p, len, ret, plen)) == -1) {
102			explicit_bzero(ret, plen);
103			free(ret);
104			return NULL;
105			}
106		35	return ret;
107		35	}
108
109			int
110			sshbuf_b64tod(struct sshbuf buf, const char b64)
111			{
112		174	size_t plen = strlen(b64);
113			int nlen, r;
114			u_char *p;
115
116	✗✓	87	if (plen == 0)
117			return 0;
118	✗✓	87	if ((p = malloc(plen)) == NULL)
119			return SSH_ERR_ALLOC_FAIL;
120	✗✓	87	if ((nlen = b64_pton(b64, p, plen)) < 0) {
121			explicit_bzero(p, plen);
122			free(p);
123			return SSH_ERR_INVALID_FORMAT;
124			}
125	✗✓	174	if ((r = sshbuf_put(buf, p, nlen)) < 0) {
126		87	explicit_bzero(p, plen);
127		87	free(p);
128			return r;
129			}
130			explicit_bzero(p, plen);
131			free(p);
132		87	return 0;
133		87	}
134
135			char *
136			sshbuf_dup_string(struct sshbuf *buf)
137			{
138		46	const u_char p = NULL, s = sshbuf_ptr(buf);
139		23	size_t l = sshbuf_len(buf);
140			char *r;
141
142	✗✓	23	if (s == NULL \|\| l > SIZE_MAX)
143			return NULL;
144			/* accept a nul only as the last character in the buffer */
145	✓✗✓✓	46	if (l > 0 && (p = memchr(s, '\0', l)) != NULL) {
146	✗✓	21	if (p != s + l - 1)
147			return NULL;
148		21	l--; /* the nul is put back below */
149		21	}
150	✗✓	23	if ((r = malloc(l + 1)) == NULL)
151			return NULL;
152	✓✗	23	if (l > 0)
153		23	memcpy(r, s, l);
154		23	r[l] = '\0';
155		23	return r;
156		23	}
157