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-rw-r--r--sshbuf-misc.c161
1 files changed, 161 insertions, 0 deletions
diff --git a/sshbuf-misc.c b/sshbuf-misc.c
new file mode 100644
index 0000000..15dcfbc
--- /dev/null
+++ b/sshbuf-misc.c
@@ -0,0 +1,161 @@
+/* $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 "includes.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <stdlib.h>
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
+#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;
+}
+