FreeCalypso > hg > freecalypso-tools

annotate rvinterf/lowlevel/clientcmd.c @ 921:74d284add54d

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fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents e7502631a0f9
children
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This rvinterf module implements the handling of client commands.
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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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Mychaela Falconia <falcon@freecalypso.org>
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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 <unistd.h>
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include "../include/pktmux.h"
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12 #include "../include/limits.h"
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13 #include "../include/localsock.h"
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Mychaela Falconia <falcon@freecalypso.org>
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14 #include "client.h"
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Mychaela Falconia <falcon@freecalypso.org>
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15
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16 void
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17 process_msg_from_client(cli)
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18 struct client *cli;
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19 {
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20 int c;
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21
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22 switch (cli->rx_buf[0]) {
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23 case CLI2RVI_WANT_RVTRACE:
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Mychaela Falconia <falcon@freecalypso.org>
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24 if (cli->rx_msglen != 9) {
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25 send_local_msg_to_client(cli, "-Bad command length");
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26 return;
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27 }
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28 c = cli->int_rvt_count;
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29 if (c >= MAX_RVT_INTEREST) {
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30 send_local_msg_to_client(cli,
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31 "-Error: too many RVT interests");
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32 return;
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33 }
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34 cli->int_rvt_mask[c] = cli->rx_buf[1] << 24 |
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35 cli->rx_buf[2] << 16 |
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36 cli->rx_buf[3] << 8 | cli->rx_buf[4];
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37 cli->int_rvt_match[c] = cli->rx_buf[5] << 24 |
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38 cli->rx_buf[6] << 16 |
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39 cli->rx_buf[7] << 8 | cli->rx_buf[8];
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40 cli->int_rvt_count++;
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41 send_local_msg_to_client(cli, "+OK");
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42 return;
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43 case CLI2RVI_WANT_MUXPROTO:
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44 if (cli->rx_msglen != 2) {
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45 send_local_msg_to_client(cli, "-Bad command length");
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46 return;
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47 }
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48 if (cli->rx_buf[1] < 0x12 || cli->rx_buf[1] > 0x1D) {
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49 send_local_msg_to_client(cli,
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50 "-Unsupported protocol MUX value");
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51 return;
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52 }
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53 cli->int_proto[cli->rx_buf[1] - 0x12] = 1;
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54 send_local_msg_to_client(cli, "+OK");
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55 return;
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56 case CLI2RVI_DROP_MUXPROTO:
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57 if (cli->rx_msglen != 2) {
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58 send_local_msg_to_client(cli, "-Bad command length");
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59 return;
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Mychaela Falconia <falcon@freecalypso.org>
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60 }
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61 if (cli->rx_buf[1] < 0x12 || cli->rx_buf[1] > 0x1D) {
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62 send_local_msg_to_client(cli,
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63 "-Unsupported protocol MUX value");
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64 return;
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65 }
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66 cli->int_proto[cli->rx_buf[1] - 0x12] = 0;
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67 send_local_msg_to_client(cli, "+OK");
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68 return;
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69 case CLI2RVI_RESET_PACKET_RX:
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70 cli->int_rvt_count = 0;
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71 bzero(cli->int_proto, sizeof(cli->int_proto));
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72 send_local_msg_to_client(cli, "+OK");
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73 return;
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Mychaela Falconia <falcon@freecalypso.org>
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74 case CLI2RVI_PKT_TO_TARGET:
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75 c = cli->rx_msglen - 1;
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Mychaela Falconia <falcon@freecalypso.org>
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76 if (c < 1 || c > MAX_PKT_TO_TARGET) {
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77 send_local_msg_to_client(cli,
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78 "-Invalid Tx packet length");
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Mychaela Falconia <falcon@freecalypso.org>
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79 return;
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Mychaela Falconia <falcon@freecalypso.org>
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80 }
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Mychaela Falconia <falcon@freecalypso.org>
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81 send_pkt_to_target(cli->rx_buf + 1, c);
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Mychaela Falconia <falcon@freecalypso.org>
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82 log_sent_packet(cli->rx_buf + 1, c);
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Mychaela Falconia <falcon@freecalypso.org>
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83 return;
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Mychaela Falconia <falcon@freecalypso.org>
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84 case CLI2RVI_RAWBYTES_TO_TARGET:
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Mychaela Falconia <falcon@freecalypso.org>
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85 /* To be implemented */
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86 default:
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Mychaela Falconia <falcon@freecalypso.org>
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87 send_local_msg_to_client(cli, "-Unimplemented command");
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88 }
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89 }