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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: servutil.c,v 1.4 2004/04/03 12:35:13 mdw Exp $ |
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4 | * |
5 | * Various handy server-only utilities |
6 | * |
7 | * (c) 2001 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Trivial IP Encryption (TrIPE). |
13 | * |
14 | * TrIPE is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * TrIPE is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with TrIPE; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: servutil.c,v $ |
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32 | * Revision 1.4 2004/04/03 12:35:13 mdw |
33 | * Support elliptic curve key exchange. |
34 | * |
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35 | * Revision 1.3 2001/06/19 22:08:11 mdw |
36 | * Use magic number for packet size. |
37 | * |
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38 | * Revision 1.2 2001/02/16 21:41:06 mdw |
39 | * Use new spare buffer for building MP textual representations. Add a |
40 | * function for making human-readable time strings. |
41 | * |
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42 | * Revision 1.1 2001/02/03 20:26:37 mdw |
43 | * Initial checkin. |
44 | * |
45 | */ |
46 | |
47 | /*----- Header files ------------------------------------------------------*/ |
48 | |
49 | #include "tripe.h" |
50 | |
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51 | /*----- Global variables --------------------------------------------------*/ |
52 | |
53 | octet buf_i[PKBUFSZ], buf_o[PKBUFSZ], buf_t[PKBUFSZ]; |
54 | |
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55 | /*----- Main code ---------------------------------------------------------*/ |
56 | |
57 | /* --- @mpstr@ --- * |
58 | * |
59 | * Arguments: @mp *m@ = a multiprecision integer |
60 | * |
61 | * Returns: A pointer to the integer's textual representation. |
62 | * |
63 | * Use: Converts a multiprecision integer to a string. Corrupts |
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64 | * @buf_t@. |
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65 | */ |
66 | |
67 | const char *mpstr(mp *m) |
68 | { |
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69 | if (mp_writestring(m, (char *)buf_t, sizeof(buf_t), 10)) |
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70 | return ("<failed>"); |
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71 | return ((const char *)buf_t); |
72 | } |
73 | |
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74 | /* --- @gestr@ --- * |
75 | * |
76 | * Arguments: @group *g@ = a group |
77 | * @ge *x@ = a group element |
78 | * |
79 | * Returns: A pointer to the element's textual representation. |
80 | * |
81 | * Use: Converts a group element to a string. Corrupts |
82 | * @buf_t@. |
83 | */ |
84 | |
85 | const char *gestr(group *g, ge *x) |
86 | { |
87 | if (group_writestring(g, x, (char *)buf_t, sizeof(buf_t))) |
88 | return ("<failed>"); |
89 | return ((const char *)buf_t); |
90 | } |
91 | |
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92 | /* --- @timestr@ --- * |
93 | * |
94 | * Arguments: @time_t t@ = a time to convert |
95 | * |
96 | * Returns: A pointer to a textual representation of the time. |
97 | * |
98 | * Use: Converts a time to a textual representation. Corrupts |
99 | * @buf_t@. |
100 | */ |
101 | |
102 | const char *timestr(time_t t) |
103 | { |
104 | struct tm *tm; |
105 | if (!t) |
106 | return ("NEVER"); |
107 | tm = localtime(&t); |
108 | strftime((char *)buf_t, sizeof(buf_t), "%Y-%m-%dT%H:%M:%S", tm); |
109 | return ((const char *)buf_t); |
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110 | } |
111 | |
112 | /*----- That's all, folks -------------------------------------------------*/ |