FreeCalypso > hg > freecalypso-tools
view rvinterf/libg23/fmtfunc.c @ 407:19e5a3e2f9c0
fcup-settime: moved time() retrieval a little closer to the output
A fundamental problem with all simple time transfer tools is that there is
always some delay between the time retrieval on the source system and that
transmitted time being set on the destination, and the resulting time
on the destination system is off by that delay amount. This delay cannot
be fully eliminated when working in a simple environment like ours,
but we should make our best effort to minimize it. In the present case,
moving the atinterf_init() call before the time() retrieval should make
a teensy-tiny improvement.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | e7502631a0f9 |
children |
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/* * This libg23 module exports functions for formatting 3 different kinds * of GPF packets into human-readable form: traces, system primitives * and protocol stack primitives. * * GPF packets passed to these functions for decoding MUST have already * been verified to be well-formed for their respective type. */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <string.h> #include <strings.h> static int entity_name_well_formed(p) char *p; { int i, len; if (!isupper(p[0])) return(0); for (i = 0; i < 4; i++) if (!isalnum(p[i])) break; len = i; for (; i < 4; i++) if (p[i] != ' ') return(0); return(len); } static void print_entity_name(raw, outp) char *raw, **outp; { int len; len = entity_name_well_formed(raw); if (len) { sprintf(*outp, "%.*s", len, raw); *outp += len; } else { sprintf(*outp, "\"%.4s\"", raw); *outp += 6; } } static void print_common_hdr(rxpkt, outp, typestr) u_char *rxpkt; char **outp, *typestr; { sprintf(*outp, "GPF %s id=%02X ts=%02X%02X%02X%02X ", typestr, rxpkt[1], rxpkt[7], rxpkt[6], rxpkt[5], rxpkt[4]); *outp = index(*outp, '\0'); print_entity_name(rxpkt + 8, outp); *(*outp)++ = '-'; *(*outp)++ = '>'; print_entity_name(rxpkt + 12, outp); *(*outp)++ = ' '; } static void format_text(rxpkt, rxpkt_len, start_off, outp) u_char *rxpkt; char *outp; { int i, c; *outp++ = '\"'; for (i = start_off; i < rxpkt_len; i++) { c = rxpkt[i]; if (c & 0x80) { *outp++ = 'M'; *outp++ = '-'; c &= 0x7F; } if (c < 0x20) { *outp++ = '^'; *outp++ = c + '@'; } else if (c == 0x7F) { *outp++ = '^'; *outp++ = '?'; } else *outp++ = c; } *outp++ = '\"'; *outp = '\0'; } static void format_compressed_trace(rxpkt, rxpkt_len, start_off, outp) u_char *rxpkt; char *outp; { int i; i = start_off + 1; sprintf(outp, "%d", rxpkt[i+1] << 8 | rxpkt[i]); outp = index(outp, '\0'); i += 4; for (; i < rxpkt_len; i++) { sprintf(outp, " %02X", rxpkt[i]); outp += 3; } *outp = '\0'; } void format_g23_trace(rxpkt, rxpkt_len, outbuf) u_char *rxpkt; char *outbuf; { char *outp = outbuf; int i; print_common_hdr(rxpkt, &outp, "trace"); i = 16; if (rxpkt[i] < 0x20) { sprintf(outp, "tc=%02X ", rxpkt[i]); outp += 6; i++; } if (rxpkt_len - i >= 5 && rxpkt[i] == '%' && !rxpkt[i+3] && !rxpkt[i+4]) format_compressed_trace(rxpkt, rxpkt_len, i, outp); else format_text(rxpkt, rxpkt_len, i, outp); } void format_g23_sysprim(rxpkt, rxpkt_len, outbuf) u_char *rxpkt; char *outbuf; { char *outp = outbuf; int i; print_common_hdr(rxpkt, &outp, "sysprim"); format_text(rxpkt, rxpkt_len, 16, outp); } void format_g23_psprim(rxpkt, rxpkt_len, outbuf) u_char *rxpkt; char *outbuf; { char *outp = outbuf; int i; print_common_hdr(rxpkt, &outp, "PSprim"); /* original destination */ *outp++ = '('; print_entity_name(rxpkt + 16, &outp); *outp++ = ')'; /* opcode */ sprintf(outp, " %02X%02X%02X%02X", rxpkt[23], rxpkt[22], rxpkt[21], rxpkt[20]); outp += 9; for (i = 24; i < rxpkt_len; i++) { sprintf(outp, " %02X", rxpkt[i]); outp += 3; } *outp = '\0'; }