FreeCalypso > hg > freecalypso-tools
view rvinterf/l1filter/pktsort.c @ 920:0306449ba467
doc/TIFFS-Overview: document classic filename and pathname limits
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 31 Dec 2022 21:08:05 +0000 |
parents | ea458ee48691 |
children |
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/* * Here we sort out incoming packets from the target relayed via rvinterf. */ #include <sys/types.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "pktmux.h" #include "limits.h" #include "localsock.h" #include "localtypes.h" #include "exitcodes.h" extern u_char rvi_msg[]; extern int rvi_msg_len; extern char **filter_list; static is_filter_match() { char **fp; int len; for (fp = filter_list; *fp; fp++) { len = strlen(*fp); if (rvi_msg_len < len + 3) continue; if (strncmp(rvi_msg + 2, *fp, len)) continue; if (rvi_msg[len+2] != ' ') continue; return 1; } return 0; } static void print_l1_trace() { u_char *dp, *endp; int c, newline; dp = rvi_msg + 2; endp = rvi_msg + rvi_msg_len; while (dp < endp) { c = *dp++; if (c == '\r') continue; if (c == '\n') { putchar(c); newline = 1; continue; } newline = 0; if (c & 0x80) { putchar('M'); putchar('-'); c &= 0x7F; } if (c == 0x7F) { putchar('^'); putchar('?'); continue; } if (c < 0x20) { putchar('^'); c += '@'; } putchar(c); } if (!newline) putchar('\n'); } static void l1_packet_rx() { if (is_filter_match()) print_l1_trace(); } void process_pkt_from_target() { switch (rvi_msg[1]) { case RVT_L1_HEADER: l1_packet_rx(); return; default: fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n", rvi_msg[1]); exit(ERROR_RVINTERF); } }