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At least now, we can discern between commands and responses

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XANTRONIX 2015-07-18 02:41:42 -05:00
parent aa294b2710
commit 5fe656762f
2 changed files with 20 additions and 0 deletions
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6
include/patty/ax25.h
View file

@ -38,6 +38,11 @@ enum patty_ax25_frame_type {
PATTY_AX25_FRAME_UNNUMBERED
};
enum patty_ax25_frame_cr {
PATTY_AX25_FRAME_COMMAND,
PATTY_AX25_FRAME_RESPONSE
};
typedef struct _patty_ax25_address {
char callsign[7];
@ -60,6 +65,7 @@ typedef struct _patty_ax25_frame {
enum patty_ax25_version version;
enum patty_ax25_frame_type type;
enum patty_ax25_frame_cr cr;
uint8_t control;
uint8_t proto;

14
src/ax25.c
View file

@ -121,6 +121,20 @@ static ssize_t frame_decode_address(patty_ax25_frame *frame, void *data, off_t s
offset += decoded;
}
/*
* Determine whether the current frame is a Command or Response, and which
* version of AX.25 this frame adheres to.
*/
if (PATTY_AX25_ADDRESS_SSID_C(frame->src.ssid)) {
frame->cr = PATTY_AX25_FRAME_RESPONSE;
frame->version = PATTY_AX25_ADDRESS_SSID_C(frame->dest.ssid)?
PATTY_AX25_OLD: PATTY_AX25_2_0;
} else {
frame->cr = PATTY_AX25_FRAME_COMMAND;
frame->version = PATTY_AX25_ADDRESS_SSID_C(frame->src.ssid)?
PATTY_AX25_OLD: PATTY_AX25_2_0;
}
/*
* If the source address is not the final address in the frame, begin
* decoding repeater addresses.