FreeCalypso > hg > freecalypso-sw
annotate rvinterf/etm/interf.c @ 232:73372cfdaf7f
tiffs IVA: object name validation implemented
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 26 Jan 2014 08:42:59 +0000 |
parents | 4714fdfca39c |
children | 2f285f20d617 |
rev | line source |
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1 /* |
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2 * This module implements the link to 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 <stdlib.h> |
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8 #include <unistd.h> |
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9 #include "../localsock.h" |
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10 |
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11 extern int sock; |
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12 |
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13 u_char rvi_msg[LOCALSOCK_MAX_MSG]; |
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14 int rvi_msg_len; |
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15 |
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16 static int rx_state, rx_left; |
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17 static u_char *rx_ptr; |
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18 |
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19 void |
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20 localsock_prep_for_length_rx() |
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21 { |
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22 rx_state = 0; |
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23 rx_ptr = rvi_msg; |
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24 rx_left = 2; |
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25 } |
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26 |
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27 static void |
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28 prep_for_message_rx() |
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29 { |
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30 rx_state = 1; |
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31 rx_ptr = rvi_msg; |
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32 rx_left = rvi_msg_len; |
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33 } |
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34 |
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35 void |
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36 process_msg_from_rvinterf() |
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37 { |
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38 switch (rvi_msg[0]) { |
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39 case RVI2CLI_PKT_FROM_TARGET: |
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40 process_pkt_from_target(); |
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41 return; |
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42 case RVI2CLI_LOCAL_CMD_RESP: |
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43 if (rvi_msg_len < 2) |
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44 goto bad; |
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45 if (rvi_msg[1] == '+') |
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46 return; |
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47 tty_cleanup(); |
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48 fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1, |
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49 rvi_msg + 1); |
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50 exit(1); |
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51 default: |
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52 bad: |
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53 tty_cleanup(); |
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54 fprintf(stderr, |
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55 "Error: unexpected message type %02X from rvinterf\n", |
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56 rvi_msg[0]); |
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57 exit(1); |
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58 } |
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59 } |
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60 |
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61 void |
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62 handle_rvinterf_input() |
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63 { |
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64 int cc; |
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65 |
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66 cc = read(sock, rx_ptr, rx_left); |
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67 if (cc <= 0) { |
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68 tty_cleanup(); |
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69 perror("read from rvinterf socket"); |
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70 exit(1); |
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71 } |
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72 rx_ptr += cc; |
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73 rx_left -= cc; |
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74 if (rx_left) |
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75 return; |
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76 /* got the thing, process it */ |
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77 if (rx_state) { |
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78 process_msg_from_rvinterf(); |
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79 localsock_prep_for_length_rx(); |
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80 } else { |
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81 rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1]; |
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82 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) { |
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83 tty_cleanup(); |
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84 fprintf(stderr, |
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85 "Invalid length from rvinterf: %02X%02X\n", |
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86 rvi_msg[0], rvi_msg[1]); |
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87 exit(1); |
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88 } |
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89 prep_for_message_rx(); |
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90 } |
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91 } |
184
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92 |
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93 void |
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94 send_pkt_to_target(pkt, pktlen) |
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95 u_char *pkt; |
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96 { |
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97 u_char hdrbuf[3]; |
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98 int len1; |
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99 |
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100 len1 = pktlen + 1; |
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101 hdrbuf[0] = len1 >> 8; |
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102 hdrbuf[1] = len1 & 0xFF; |
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103 hdrbuf[2] = CLI2RVI_PKT_TO_TARGET; |
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104 write(sock, hdrbuf, 3); |
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105 write(sock, pkt, pktlen); |
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106 } |