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Attempt vsnprintf() up to BUFSIZ in kore_buf_appendv(). 

If the result was too large fall back to vasprintf instead.
This commit is contained in:
Joris Vink 2014-08-22 14:40:19 +02:00
parent 0542d70a71
commit fa69f2a49c
1 changed files with 13 additions and 4 deletions
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17
src/buf.c
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@ -56,14 +56,23 @@ void
kore_buf_appendv(struct kore_buf *buf, const char *fmt, va_list args)
{
int l;
char *b;
char *b, sb[BUFSIZ];
l = vasprintf(&b, fmt, args);
l = vsnprintf(sb, sizeof(sb), fmt, args);
if (l == -1)
fatal("kore_buf_appendv(): error or truncation");
fatal("kore_buf_appendv(): vsnprintf error");
if ((size_t)l >= sizeof(sb)) {
l = vasprintf(&b, fmt, args);
if (l == -1)
fatal("kore_buf_appendv(): error or truncation");
} else {
b = sb;
}
kore_buf_append(buf, (u_int8_t *)b, l);
free(b);
if (b != sb)
free(b);
}
void