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annotate scpmisc.h @ 994:5c5ade336926

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Prefer stronger algorithms in algorithm negotiation. Prefer diffie-hellman-group14-sha1 (2048 bit) over diffie-hellman-group1-sha1 (1024 bit). Due to meet-in-the-middle attacks the effective key length of three key 3DES is 112 bits. AES is stronger and faster then 3DES. Prefer to delay the start of compression until after authentication has completed. This avoids exposing compression code to attacks from unauthenticated users. (github pull request #9)
author Fedor Brunner <fedor.brunner@azet.sk>
date Fri, 23 Jan 2015 23:00:25 +0800
parents 5686ee0a3338
children 83d85b28b353
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1 /* $OpenBSD: misc.h,v 1.12 2002/03/19 10:49:35 markus Exp $ */
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2
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3 /*
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4 * Author: Tatu Ylonen <[email protected]>
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5 * Copyright (c) 1995 Tatu Ylonen <[email protected]>, Espoo, Finland
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6 * All rights reserved
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7 *
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8 * As far as I am concerned, the code I have written for this software
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9 * can be used freely for any purpose. Any derived versions of this
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10 * software must be clearly marked as such, and if the derived work is
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11 * incompatible with the protocol description in the RFC file, it must be
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12 * called by a name other than "ssh" or "Secure Shell".
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13 */
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14
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15 /* actually from atomicio, but is only used in scp code */
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16 #define vwrite (ssize_t (*)(int, void *, size_t))write
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18 char *chop(char *);
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19 char *strdelim(char **);
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20 void set_nonblock(int);
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21 void unset_nonblock(int);
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22 void set_nodelay(int);
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23 int a2port(const char *);
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24 char *cleanhostname(char *);
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25 char *colon(char *);
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26 long convtime(const char *);
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28 struct passwd *pwcopy(struct passwd *);
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29
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30 typedef struct arglist arglist;
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31 struct arglist {
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32 char **list;
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33 int num;
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34 int nalloc;
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35 };
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36 void addargs(arglist *, char *, ...);
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37 void replacearg(arglist *, u_int, char *, ...);
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38 void freeargs(arglist *);
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40 /* from xmalloc.h */
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41 void *xmalloc(size_t);
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42 void *xrealloc(void *, size_t);
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43 void xfree(void *);
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44 char *xstrdup(const char *);
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45
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46 char *ssh_get_progname(char *);
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47 void fatal(char* fmt,...);
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48 void sanitise_stdfd(void);
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49
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50 /* Required for non-BSD platforms, from OpenSSH's defines.h */
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51 #ifndef timersub
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52 #define timersub(a, b, result) \
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53 do { \
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54 (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
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55 (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
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56 if ((result)->tv_usec < 0) { \
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57 --(result)->tv_sec; \
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58 (result)->tv_usec += 1000000; \
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59 } \
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60 } while (0)
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61 #endif
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63 #ifndef TIMEVAL_TO_TIMESPEC
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64 #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
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65 (ts)->tv_sec = (tv)->tv_sec; \
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66 (ts)->tv_nsec = (tv)->tv_usec * 1000; \
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67 }
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68 #endif
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