diff options
Diffstat (limited to 'src/modules/systemlib/mixer/mixer_multirotor.cpp')
| -rw-r--r-- | src/modules/systemlib/mixer/mixer_multirotor.cpp | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/modules/systemlib/mixer/mixer_multirotor.cpp b/src/modules/systemlib/mixer/mixer_multirotor.cpp index 576af5e30..2446cc3fb 100644 --- a/src/modules/systemlib/mixer/mixer_multirotor.cpp +++ b/src/modules/systemlib/mixer/mixer_multirotor.cpp @@ -183,10 +183,20 @@ MultirotorMixer::from_text(Mixer::ControlCallback control_cb, uintptr_t cb_handl int used; const char *end = buf + buflen; - /* require a space or newline at the end of the buffer */ - if (*end != ' ' && *end != '\n' && *end != '\r') { - debug("multirotor parser rejected: No newline / space at end of buf."); - return nullptr; + /* enforce that the mixer ends with space or a new line */ + for (int i = buflen - 1; i >= 0; i--) { + if (buf[i] == '\0') + continue; + + /* require a space or newline at the end of the buffer, fail on printable chars */ + if (buf[i] == ' ' || buf[i] == '\n' || buf[i] == '\r') { + /* found a line ending or space, so no split symbols / numbers. good. */ + break; + } else { + debug("simple parser rejected: No newline / space at end of buf. (#%d/%d: 0x%02x)", i, buflen-1, buf[i]); + return nullptr; + } + } if (sscanf(buf, "R: %s %d %d %d %d%n", geomname, &s[0], &s[1], &s[2], &s[3], &used) != 5) { |