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More error checking for messages.

This commit is contained in:
wb2osz 2022-01-17 22:10:47 +00:00
parent 366e0ab6e0
commit 0f2b241763
1 changed files with 35 additions and 1 deletions
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36
src/decode_aprs.c
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@ -1554,7 +1554,8 @@ static void aprs_message (decode_aprs_t *A, unsigned char *info, int ilen, int q
if (p->colon != ':') {
if (! quiet) {
text_color_set(DW_COLOR_ERROR);
dw_printf("APRS Message must begin with : 9 character addressee :\n");
dw_printf("APRS Message must begin with ':' 9 character addressee ':'\n");
dw_printf("Spaces must be added to shorter addressee to make 9 characters.\n");
}
A->g_message_subtype = message_subtype_invalid;
return;
@ -1569,6 +1570,38 @@ static void aprs_message (decode_aprs_t *A, unsigned char *info, int ilen, int q
addressee[i--] = '\0';
}
// Anytone AT-D878UV 2 plus would pad out station name to 6 characters
// before appending the SSID. e.g. "AE7MK -5 "
// Test cases. First is valid. Others should produce errors:
//
// cbeacon sendto=r0 delay=0:10 info=":AE7MK-5 :test0"
// cbeacon sendto=r0 delay=0:15 info=":AE7MK-5:test1"
// cbeacon sendto=r0 delay=0:20 info=":AE7MK -5 :test2"
// cbeacon sendto=r0 delay=0:25 info=":AE7 -5 :test3"
static regex_t bad_addressee_re; /* Probably bad addressee. */
static int first_time = 1;
if (first_time) {
char emsg[100];
int e = regcomp (&bad_addressee_re, "[A-Z0-9]+ +-[0-9]", REG_EXTENDED);
if (e) {
regerror (e, &bad_addressee_re, emsg, sizeof(emsg));
dw_printf("%s:%d: %s\n", __FILE__, __LINE__, emsg);
}
first_time = 0;
}
#define MAXMATCH_AT 2
regmatch_t match[MAXMATCH_AT];
if (regexec (&bad_addressee_re, addressee, MAXMATCH_AT, match, 0) == 0) {
text_color_set(DW_COLOR_ERROR);
dw_printf("Malformed addressee with space between station name and SSID.\n");
dw_printf("Please tell message sender this is invalid.\n");
}
strlcpy (A->g_addressee, addressee, sizeof(A->g_addressee));
@ -4135,6 +4168,7 @@ static void process_comment (decode_aprs_t *A, char *pstart, int clen)
static regex_t base91_tel_re; /* Base 91 compressed telemetry data. */
int e;
char emsg[100];
#define MAXMATCH 4