annotate rvinterf/asyncshell/pktsort.c @ 926:6a0aa8d36d06

rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents bbc41034f14c
children 31a36b400cdf
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1 /*
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2 * Here we sort out incoming packets from the target relayed via rvinterf.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdlib.h>
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10 #include "pktmux.h"
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11 #include "limits.h"
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12 #include "localsock.h"
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13 #include "localtypes.h"
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14 #include "exitcodes.h"
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15
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16 extern u_char rvi_msg[];
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17 extern int rvi_msg_len;
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18 extern int oneshot_mode;
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19
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20 static void
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21 process_rvt()
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22 {
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23 u32 useid;
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24
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25 if (rvi_msg_len < 7) {
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26 tty_cleanup();
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27 fprintf(stderr, "Error: rvinterf sent us an invalid RVT msg\n");
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28 exit(ERROR_RVINTERF);
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29 }
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30 useid = rvi_msg[2] << 24 | rvi_msg[3] << 16 | rvi_msg[4] << 8
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31 | rvi_msg[5];
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32 switch (useid) {
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33 case 0:
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34 handle_useid_0();
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35 return;
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36 default:
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37 tty_cleanup();
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38 fprintf(stderr, "unexpected fwd of USEID %08X from rvinterf\n",
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39 useid);
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40 exit(ERROR_RVINTERF);
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41 }
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42 }
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43
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44 static void
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45 gpf_packet_rx()
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46 {
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47 char fmtbuf[MAX_PKT_FROM_TARGET*8]; /* size it generously */
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48
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49 format_g23_packet(rvi_msg + 1, rvi_msg_len - 1, fmtbuf);
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50 async_msg_output(fmtbuf);
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51 }
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52
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53 static void
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54 response_from_ati()
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55 {
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56 char buf[MAX_PKT_FROM_TARGET*4+2];
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57
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58 strcpy(buf, "ATI: ");
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59 safe_print_trace(rvi_msg + 2, rvi_msg_len - 2, buf + 5);
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60 async_msg_output(buf);
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61 if (oneshot_mode)
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62 oneshot_at_check_response();
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63 }
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64
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65 void
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66 process_pkt_from_target()
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67 {
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68 switch (rvi_msg[1]) {
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69 case RVT_RV_HEADER:
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70 process_rvt();
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71 return;
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72 case RVT_L23_HEADER:
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73 gpf_packet_rx();
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74 return;
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75 case RVT_AT_HEADER:
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76 response_from_ati();
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77 return;
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78 case RVT_TCH_HEADER:
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79 tch_packet_rx();
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80 return;
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81 default:
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82 tty_cleanup();
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83 fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n",
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84 rvi_msg[1]);
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85 exit(ERROR_RVINTERF);
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86 }
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87 }