FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/pktsort.c @ 624:7485e75d9477

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srec-regions: removed unnecessary prohibition against address going backward
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 27 Feb 2020 08:12:11 +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();
0
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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 }