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Issue 367 - AGW monitoring must handle binary data.

This commit is contained in:
wb2osz 2021-12-19 21:06:42 +00:00
parent 45cd680b90
commit eef35cf891
1 changed files with 12 additions and 6 deletions
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18
src/server.c
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@ -868,7 +868,7 @@ void server_send_monitored (int chan, packet_t pp, int own_xmit)
*/
struct {
struct agwpe_s hdr;
char data[1+AX25_MAX_PACKET_LEN];
char data[128+AX25_MAX_PACKET_LEN]; // Add plenty of room for header prefix.
} agwpe_msg;
int err;
@ -906,7 +906,7 @@ void server_send_monitored (int chan, packet_t pp, int own_xmit)
// Add the description with <... >
char desc[80];
char desc[120];
agwpe_msg.hdr.datakind = mon_desc (pp, desc, sizeof(desc));
if (own_xmit) {
agwpe_msg.hdr.datakind = 'T';
@ -921,16 +921,22 @@ void server_send_monitored (int chan, packet_t pp, int own_xmit)
snprintf (ts, sizeof(ts), "[%02d:%02d:%02d]\r", tm->tm_hour, tm->tm_min, tm->tm_sec);
strlcat ((char*)(agwpe_msg.data), ts, sizeof(agwpe_msg.data));
// Information if any with \r\r.
// Information if any with \r.
unsigned char *pinfo = NULL;
int info_len = ax25_get_info (pp, &pinfo);
int msg_data_len = strlen((char*)(agwpe_msg.data)); // result length so far
if (info_len > 0 && pinfo != NULL) {
strlcat ((char*)(agwpe_msg.data), (char*)pinfo, sizeof(agwpe_msg.data));
strlcat ((char*)(agwpe_msg.data), "\r", sizeof(agwpe_msg.data));
// Issue 367: Use of strlcat truncated information part at any nul character.
// Use memcpy instead to preserve binary data, e.g. NET/ROM.
memcpy (agwpe_msg.data + msg_data_len, pinfo, info_len);
msg_data_len += info_len;
agwpe_msg.data[msg_data_len++] = '\r';
}
agwpe_msg.hdr.data_len_NETLE = host2netle(strlen(agwpe_msg.data) + 1) /* +1 to include terminating null */ ;
agwpe_msg.data[msg_data_len++] = '\0'; // add nul at end, included in length.
agwpe_msg.hdr.data_len_NETLE = host2netle(msg_data_len);
if (debug_client) {
debug_print (TO_CLIENT, client, &agwpe_msg.hdr, sizeof(agwpe_msg.hdr) + netle2host(agwpe_msg.hdr.data_len_NETLE));