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fidopkt: Fix return value when aborting parse early


jcs made amendment 572 11 months ago
--- fidopkt.c Tue Nov 21 21:52:42 2023 +++ fidopkt.c Sat Dec 2 19:49:38 2023 @@ -200,7 +200,7 @@ fidopkt_parse_message(char *packet_filename, struct fi size_t body_len, len, llen, msg_size, msg_size_limited; long tzoff = 0; char dmon[6]; - short dday, dyear, dhour, dmin, dsec, dutc, attr, n; + short dday, dyear, dhour, dmin, dsec, dutc, attr, n, val; bool tear; #ifdef FIDOPKT_DEBUG @@ -213,23 +213,23 @@ fidopkt_parse_message(char *packet_filename, struct fi if (header == NULL) { if (len < FIDOPKT_HEADER_SIZE) { logger_printf("[fidopkt] Packet too small (%ld)", len); - return; + return NULL; } - if (GET_U16(buf + FIDOPKT_PKTTYPE) != 2) { - logger_printf("[fidopkt] Not a FidoNet packet"); - return; + if ((val = GET_U16(buf + FIDOPKT_PKTTYPE)) != 2) { + logger_printf("[fidopkt] Not a FidoNet packet (0x%x)", val); + return NULL; } if (GET_U16(buf + FIDOPKT_BAUD) == 2) { logger_printf("[fidopkt] 5d format not supported"); - return; + return NULL; } if (buf[FIDOPKT_CWVALIDCOPY] != buf[FIDOPKT_CAPABILWORD + 1] || buf[FIDOPKT_CWVALIDCOPY + 1] != buf[FIDOPKT_CAPABILWORD]) { logger_printf("[fidopkt] Not in 4d format"); - return; + return NULL; } if (GET_U16(buf + FIDOPKT_ORIGZONE) != 0) { @@ -256,12 +256,12 @@ fidopkt_parse_message(char *packet_filename, struct fi if (len < FIDOPKT_MSG_HEADER_SIZE) { logger_printf("[fidopkt] Message header too short"); - return; + return NULL; } - if (GET_U16(buf + FIDOPKT_MSG_PKTTYPE) != 2) { - logger_printf("[fidopkt] Header packet type != 2"); - return; + if ((val = GET_U16(buf + FIDOPKT_MSG_PKTTYPE)) != 2) { + logger_printf("[fidopkt] Header packet type != 2 (0x%x)", val); + return NULL; } attr = GET_U16(buf + FIDOPKT_MSG_ATTR);