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annotate strlcpy.h @ 284:163e140e74f5 draft

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-rpcssl=1 option, allowing secure HTTPS JSON-RPC connections on OSX/Unix. git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@165 1a98c847-1fd6-4fd8-948a-caf3550aa51b
author gavinandresen <gavinandresen@1a98c847-1fd6-4fd8-948a-caf3550aa51b>
date Mon, 11 Oct 2010 18:23:41 +0000
parents bbd929786bd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
264
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1 /*
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2 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
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3 *
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4 * Permission to use, copy, modify, and distribute this software for any
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5 * purpose with or without fee is hereby granted, provided that the above
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6 * copyright notice and this permission notice appear in all copies.
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7 *
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8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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15 */
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16
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17 /*
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18 * Copy src to string dst of size siz. At most siz-1 characters
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19 * will be copied. Always NUL terminates (unless siz == 0).
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20 * Returns strlen(src); if retval >= siz, truncation occurred.
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21 */
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22 inline size_t strlcpy(char *dst, const char *src, size_t siz)
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23 {
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24 char *d = dst;
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25 const char *s = src;
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26 size_t n = siz;
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27
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28 /* Copy as many bytes as will fit */
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29 if (n != 0)
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30 {
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31 while (--n != 0)
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32 {
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33 if ((*d++ = *s++) == '\0')
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34 break;
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35 }
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36 }
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37
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38 /* Not enough room in dst, add NUL and traverse rest of src */
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39 if (n == 0)
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40 {
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41 if (siz != 0)
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42 *d = '\0'; /* NUL-terminate dst */
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43 while (*s++)
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44 ;
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45 }
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46
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47 return(s - src - 1); /* count does not include NUL */
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48 }
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49
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50 /*
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51 * Appends src to string dst of size siz (unlike strncat, siz is the
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52 * full size of dst, not space left). At most siz-1 characters
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53 * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
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54 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
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55 * If retval >= siz, truncation occurred.
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56 */
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57 inline size_t strlcat(char *dst, const char *src, size_t siz)
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58 {
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59 char *d = dst;
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60 const char *s = src;
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61 size_t n = siz;
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62 size_t dlen;
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63
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64 /* Find the end of dst and adjust bytes left but don't go past end */
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65 while (n-- != 0 && *d != '\0')
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66 d++;
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67 dlen = d - dst;
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68 n = siz - dlen;
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69
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70 if (n == 0)
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71 return(dlen + strlen(s));
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72 while (*s != '\0')
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73 {
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74 if (n != 1)
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75 {
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76 *d++ = *s;
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77 n--;
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78 }
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79 s++;
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80 }
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81 *d = '\0';
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82
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83 return(dlen + (s - src)); /* count does not include NUL */
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84 }