FreeCalypso > hg > freecalypso-tools

annotate rvinterf/libg23/fmtdispatch.c @ 611:c847d742ab38

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Loadtools-performance: article started
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 24 Feb 2020 21:44:13 +0000
parents e7502631a0f9
children
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0
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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2 * This libg23 module exports the format_g23_packet() function, which
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 * validates the packet, then dispatches it to format_g23_trace(),
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * format_g23_sysprim() or format_g23_psprim() as appropriate, or
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * prints it in raw hex if malformed.
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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6 */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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7
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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8 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
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12
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 static int
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 basic_checks(rxpkt, rxpkt_len)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 int i, c;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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18
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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19 if (rxpkt_len < 17)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 /* check version bits in the header byte */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 if ((rxpkt[1] & 0xC0) != 0x80)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 /* check the length */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 c = rxpkt[2] | rxpkt[3] << 8;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 if (c + 4 != rxpkt_len)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 /* ensure that the "from" and "to" are printable ASCII */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 for (i = 8; i < 16; i++) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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30 c = rxpkt[i];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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31 if (c < ' ' || c > '~')
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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32 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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33 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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34 /* basic checks pass */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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35 return(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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36 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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37
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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38 static int
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 psprim_extra_checks(rxpkt, rxpkt_len)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 int i, c;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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43
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 if (rxpkt_len < 24)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 /* "original rcvr" field needs to be printable ASCII */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 for (i = 16; i < 20; i++) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 c = rxpkt[i];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 if (c < ' ' || c > '~')
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 return(0);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
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51 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 /* checks pass */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 return(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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54 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 static void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 print_unknown_bin(rxpkt, rxpkt_len, outbuf)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 char *outbuf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 int i;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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62 char *dp;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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63
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 dp = outbuf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 strcpy(dp, "GPF UNK:");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66 dp += 8;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 for (i = 1; i < rxpkt_len; i++) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 sprintf(dp, " %02X", rxpkt[i]);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 dp += 3;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 *dp = '\0';
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 static void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 print_old_ascii(rxpkt, rxpkt_len, outbuf)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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77 char *outbuf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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79 char *dp;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80 int txtlen = rxpkt_len - 1;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 dp = outbuf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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83 strcpy(dp, "GPF ASC: ");
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 dp += 9;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 bcopy(rxpkt + 1, dp, txtlen);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 dp += txtlen;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 *dp = '\0';
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90 static int
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 is_old_ascii(rxpkt, rxpkt_len)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 int i, c;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 for (i = 1; i < rxpkt_len; i++) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 c = rxpkt[i];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 if (c < ' ' || c > '~')
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 return(0);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 return(1);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 static void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 print_malformed(rxpkt, rxpkt_len, outbuf)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 char *outbuf;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 if (is_old_ascii(rxpkt, rxpkt_len))
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 print_old_ascii(rxpkt, rxpkt_len, outbuf);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 print_unknown_bin(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115 void
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 format_g23_packet(rxpkt, rxpkt_len, outbuf)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 u_char *rxpkt;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 char *outbuf;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 if (!basic_checks(rxpkt, rxpkt_len)) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 /* dispatch by type */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 switch (rxpkt[1] & 0x30) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 case 0x10:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 /* PS primitive */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 if (psprim_extra_checks(rxpkt, rxpkt_len))
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 format_g23_psprim(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 else
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 case 0x20:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 /* trace */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 format_g23_trace(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 case 0x30:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 /* system primitive */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 format_g23_sysprim(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 default:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 }