mirror of
https://github.com/transmission/transmission
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95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
/*
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* Copyright (c) 2004-2005 Sergey Lyubka <valenok@gmail.com>
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* All rights reserved
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*
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* "THE BEER-WARE LICENSE" (Revision 42):
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* Sergey Lyubka wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return.
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*/
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#include "defs.h"
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void
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my_strlcpy(register char *dst, register const char *src, size_t n)
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{
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for (; *src != '\0' && n > 1; n--)
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*dst++ = *src++;
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*dst = '\0';
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}
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int
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my_strncasecmp(const char *str1, const char *str2, size_t len)
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{
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register const unsigned char *s1 = (unsigned char *) str1,
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*s2 = (unsigned char *) str2, *e;
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int ret;
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for (e = s1 + len - 1; s1 < e && *s1 != '\0' && *s2 != '\0' &&
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tolower(*s1) == tolower(*s2); s1++, s2++) ;
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ret = tolower(*s1) - tolower(*s2);
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return (ret);
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}
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char *
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my_strndup(const char *ptr, size_t len)
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{
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char *p;
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if ((p = malloc(len + 1)) != NULL)
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my_strlcpy(p, ptr, len + 1);
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return (p);
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}
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char *
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my_strdup(const char *str)
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{
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return (my_strndup(str, strlen(str)));
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}
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/*
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* Sane snprintf(). Acts like snprintf(), but never return -1 or the
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* value bigger than supplied buffer.
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* Thanks Adam Zeldis to pointing snprintf()-caused vulnerability
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* in his audit report.
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*/
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int
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my_snprintf(char *buf, size_t buflen, const char *fmt, ...)
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{
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va_list ap;
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int n;
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if (buflen == 0)
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return (0);
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va_start(ap, fmt);
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n = vsnprintf(buf, buflen, fmt, ap);
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va_end(ap);
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if (n < 0 || (size_t) n >= buflen)
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n = buflen - 1;
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buf[n] = '\0';
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return (n);
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}
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/*
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* Verify that given file has certain extension
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*/
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int
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match_extension(const char *path, const char *ext_list)
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{
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size_t len, path_len;
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path_len = strlen(path);
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FOR_EACH_WORD_IN_LIST(ext_list, len)
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if (len < path_len && path[path_len - len - 1] == '.' &&
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!my_strncasecmp(path + path_len - len, ext_list, len))
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return (TRUE);
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return (FALSE);
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}
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