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safer string handling

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This commit is contained in:
Jfreegman
2014-10-03 17:53:50 -04:00
parent c56c6cc219
commit 23cf9686cb
12 changed files with 87 additions and 65 deletions
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12
src/misc_tools.c
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@ -250,11 +250,21 @@ void str_to_lower(char *str)
int get_nick_truncate(Tox *m, char *buf, int friendnum)
{
int len = tox_get_name(m, friendnum, (uint8_t *) buf);
len = MIN(len, TOXIC_MAX_NAME_LENGTH - 1);
len = MIN(len, TOXIC_MAX_NAME_LENGTH);
buf[len] = '\0';
return len;
}
/* copies data to msg buffer.
returns length of msg, which will be no larger than size-1 */
uint16_t copy_tox_str(char *msg, size_t size, const char *data, uint16_t length)
{
int len = MIN(length, size - 1);
memcpy(msg, data, len);
msg[len] = '\0';
return len;
}
/* returns index of the first instance of ch in s starting at idx.
returns length of s if char not found */
int char_find(int idx, const char *s, char ch)