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Protection against possible buffer overflow

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This commit is contained in:
rajithr 2015-05-27 19:06:19 +05:30
parent 5a26d25647
commit 08503a20be
1 changed files with 3 additions and 2 deletions
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5
core/net/packetbuf.c
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@ -141,6 +141,7 @@ packetbuf_copyto(void *to)
int i;
char buffer[1000];
char *bufferptr = buffer;
int bufferlen = 0;
bufferptr[0] = 0;
for(i = hdrptr; i < PACKETBUF_HDR_SIZE; ++i) {
@ -149,8 +150,8 @@ packetbuf_copyto(void *to)
PRINTF("packetbuf_write: header: %s\n", buffer);
bufferptr = buffer;
bufferptr[0] = 0;
for(i = bufptr; i < buflen + bufptr; ++i) {
bufferptr += sprintf(bufferptr, "0x%02x, ", packetbufptr[i]);
for(i = bufptr; ((i < buflen + bufptr) && (bufferlen < 980)); ++i) {
bufferlen += sprintf(bufferptr + bufferlen, "0x%02x, ", packetbufptr[i]);
}
PRINTF("packetbuf_write: data: %s\n", buffer);
}