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Add hexdump support to fastd logging functions

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This commit is contained in:
Matthias Schiffer 2015-01-23 00:17:26 +01:00
parent fce2157168
commit 0d9b7eeb90
1 changed files with 14 additions and 0 deletions
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14
src/log.c
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@ -107,6 +107,15 @@ static size_t snprint_peer_str(char *buffer, size_t size, const fastd_peer_t *pe
return snprintf_safe(buffer, size, "(null)");
}
/** Add a hexdump to a string buffer */
static size_t snprint_hexdump(char *buffer, size_t size, const uint8_t *d, size_t len) {
size_t n = 0, i;
for (i = 0; i < len && n < size; i++)
n += snprintf_safe(buffer+n, size-n, "%02x", d[i]);
return n;
}
/** vsnprintf-like function using different conversion specifiers */
static int fastd_vsnprintf(char *buffer, size_t size, const char *format, va_list ap) {
char *buffer_start = buffer;
@ -171,6 +180,11 @@ static int fastd_vsnprintf(char *buffer, size_t size, const char *format, va_lis
buffer += snprint_peer_str(buffer, buffer_end-buffer, va_arg(ap, const fastd_peer_t *));
break;
case 'H':
p = va_arg(ap, const uint8_t *);
buffer += snprint_hexdump(buffer, buffer_end-buffer, p, va_arg(ap, size_t));
break;
case 'I':
case 'B':
case 'L':