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blobmsg_json: simplify add_separator and fix thread-safety

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The hard-coded length limits are replaced with strlen to make the code more
robust.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This commit is contained in:
Matthias Schiffer 2016-04-06 17:40:22 +02:00 committed by Jo-Philipp Wich
parent dfe446e2a9
commit 155bf39896
1 changed files with 6 additions and 10 deletions
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16
blobmsg_json.c
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@ -135,21 +135,17 @@ static bool blobmsg_puts(struct strbuf *s, const char *c, int len)
static void add_separator(struct strbuf *s)
{
static char indent_chars[17] = "\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
int indent;
char *start;
const char *indent_chars = "\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
int len;
if (!s->indent)
return;
indent = s->indent_level;
if (indent > 16)
indent = 16;
len = s->indent_level + 1;
if (len > strlen(indent_chars))
len = strlen(indent_chars);
start = &indent_chars[sizeof(indent_chars) - indent - 1];
*start = '\n';
blobmsg_puts(s, start, indent + 1);
*start = '\t';
blobmsg_puts(s, indent_chars, len);
}