Annotation of src/usr.bin/ssh/sshbuf-misc.c, Revision 1.1
1.1 ! djm 1: /* $OpenBSD$ */
! 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 <stdio.h>
! 24: #include <limits.h>
! 25: #include <string.h>
! 26: #include <resolv.h>
! 27: #include <ctype.h>
! 28:
! 29: #include "ssherr.h"
! 30: #define SSHBUF_INTERNAL
! 31: #include "sshbuf.h"
! 32:
! 33: void
! 34: sshbuf_dump(struct sshbuf *buf, FILE *f)
! 35: {
! 36: const u_char *p = sshbuf_ptr(buf);
! 37: size_t i, j, len = sshbuf_len(buf);
! 38:
! 39: fprintf(f, "buffer %p len = %zu\n", buf, len);
! 40: for (i = 0; i < len; i += 16) {
! 41: fprintf(f, "%.4zd: ", 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: char *
! 62: sshbuf_dtob16(struct sshbuf *buf)
! 63: {
! 64: size_t i, j, len = sshbuf_len(buf);
! 65: const u_char *p = sshbuf_ptr(buf);
! 66: char *ret;
! 67: const char hex[] = "0123456789abcdef";
! 68:
! 69: if (len == 0)
! 70: return strdup("");
! 71: if (SIZE_MAX / 2 <= len || (ret = malloc(len * 2 + 1)) == NULL)
! 72: return NULL;
! 73: for (i = j = 0; i < len; i++) {
! 74: ret[j++] = hex[(p[i] >> 4) & 0xf];
! 75: ret[j++] = hex[p[i] & 0xf];
! 76: }
! 77: ret[j] = '\0';
! 78: return ret;
! 79: }
! 80:
! 81: char *
! 82: sshbuf_dtob64(struct sshbuf *buf)
! 83: {
! 84: size_t len = sshbuf_len(buf), plen;
! 85: const u_char *p = sshbuf_ptr(buf);
! 86: char *ret;
! 87: int r;
! 88:
! 89: if (len == 0)
! 90: return strdup("");
! 91: plen = ((len + 2) / 3) * 4 + 1;
! 92: if (SIZE_MAX / 2 <= len || (ret = malloc(plen)) == NULL)
! 93: return NULL;
! 94: if ((r = b64_ntop(p, len, ret, plen)) == -1) {
! 95: bzero(ret, plen);
! 96: free(ret);
! 97: return NULL;
! 98: }
! 99: return ret;
! 100: }
! 101:
! 102: int
! 103: sshbuf_b64tod(struct sshbuf *buf, const char *b64)
! 104: {
! 105: size_t plen = strlen(b64);
! 106: int nlen, r;
! 107: u_char *p;
! 108:
! 109: if (plen == 0)
! 110: return 0;
! 111: if ((p = malloc(plen)) == NULL)
! 112: return SSH_ERR_ALLOC_FAIL;
! 113: if ((nlen = b64_pton(b64, p, plen)) < 0) {
! 114: bzero(p, plen);
! 115: free(p);
! 116: return SSH_ERR_INVALID_FORMAT;
! 117: }
! 118: if ((r = sshbuf_put(buf, p, nlen)) < 0) {
! 119: bzero(p, plen);
! 120: free(p);
! 121: return r;
! 122: }
! 123: bzero(p, plen);
! 124: free(p);
! 125: return 0;
! 126: }
! 127:
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