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AP_Logger: use null terminated strings

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this prevents logging garbage for strings that are shorter than the
length specifier (eg. 'Z'). This assumes we will not want to log
binary data as strings
This commit is contained in:
Andrew Tridgell 2021-01-01 08:01:53 +11:00
parent 66c05bef76
commit 4fdf315760
1 changed files with 3 additions and 1 deletions
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4
libraries/AP_Logger/AP_Logger_Backend.cpp
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@ -323,7 +323,9 @@ bool AP_Logger_Backend::Write(const uint8_t msg_type, va_list arg_list, bool is_
}
if (charlen != 0) {
char *tmp = va_arg(arg_list, char*);
memcpy(&buffer[offset], tmp, charlen);
uint8_t len = strnlen(tmp, charlen);
memcpy(&buffer[offset], tmp, len);
memset(&buffer[offset+len], 0, charlen-len);
offset += charlen;
}
}