FreeCalypso > hg > freecalypso-tools

annotate rvinterf/libasync/interf.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents 09b4fd9b3827
children
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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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parents: 0
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10 #include "exitcodes.h"
0
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11
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12 extern int sock;
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13
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14 u_char rvi_msg[LOCALSOCK_MAX_MSG];
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Mychaela Falconia <falcon@freecalypso.org>
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15 int rvi_msg_len;
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16
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17 static int rx_state, rx_left;
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Mychaela Falconia <falcon@freecalypso.org>
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18 static u_char *rx_ptr;
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19
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20 void
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21 localsock_prep_for_length_rx()
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22 {
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23 rx_state = 0;
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24 rx_ptr = rvi_msg;
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25 rx_left = 2;
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26 }
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27
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28 static void
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29 prep_for_message_rx()
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30 {
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31 rx_state = 1;
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32 rx_ptr = rvi_msg;
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33 rx_left = rvi_msg_len;
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34 }
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35
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36 void
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37 process_msg_from_rvinterf()
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38 {
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39 switch (rvi_msg[0]) {
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40 case RVI2CLI_PKT_FROM_TARGET:
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41 process_pkt_from_target();
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42 return;
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43 case RVI2CLI_LOCAL_CMD_RESP:
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44 if (rvi_msg_len < 2)
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45 goto bad;
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46 if (rvi_msg[1] == '+')
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47 return;
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48 tty_cleanup();
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49 fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1,
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50 rvi_msg + 1);
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51 exit(ERROR_RVINTERF);
0
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52 default:
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53 bad:
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54 tty_cleanup();
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55 fprintf(stderr,
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56 "Error: unexpected message type %02X from rvinterf\n",
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57 rvi_msg[0]);
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58 exit(ERROR_RVINTERF);
0
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59 }
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60 }
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61
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62 void
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63 handle_rvinterf_input()
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64 {
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65 int cc;
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66
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67 cc = read(sock, rx_ptr, rx_left);
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68 if (cc <= 0) {
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69 tty_cleanup();
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70 perror("read from rvinterf socket");
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71 exit(ERROR_RVINTERF);
0
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72 }
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73 rx_ptr += cc;
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74 rx_left -= cc;
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75 if (rx_left)
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76 return;
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Mychaela Falconia <falcon@freecalypso.org>
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77 /* got the thing, process it */
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78 if (rx_state) {
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79 process_msg_from_rvinterf();
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80 localsock_prep_for_length_rx();
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81 } else {
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82 rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1];
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83 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) {
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84 tty_cleanup();
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85 fprintf(stderr,
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86 "Invalid length from rvinterf: %02X%02X\n",
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Mychaela Falconia <falcon@freecalypso.org>
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87 rvi_msg[0], rvi_msg[1]);
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88 exit(ERROR_RVINTERF);
0
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89 }
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Mychaela Falconia <falcon@freecalypso.org>
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90 prep_for_message_rx();
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91 }
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Mychaela Falconia <falcon@freecalypso.org>
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92 }
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93
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Mychaela Falconia <falcon@freecalypso.org>
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94 void
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Mychaela Falconia <falcon@freecalypso.org>
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95 send_pkt_to_target(pkt, pktlen)
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Mychaela Falconia <falcon@freecalypso.org>
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96 u_char *pkt;
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97 {
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Mychaela Falconia <falcon@freecalypso.org>
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98 u_char hdrbuf[3];
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99 int len1;
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100
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Mychaela Falconia <falcon@freecalypso.org>
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101 len1 = pktlen + 1;
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Mychaela Falconia <falcon@freecalypso.org>
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102 hdrbuf[0] = len1 >> 8;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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103 hdrbuf[1] = len1 & 0xFF;
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Mychaela Falconia <falcon@freecalypso.org>
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104 hdrbuf[2] = CLI2RVI_PKT_TO_TARGET;
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Mychaela Falconia <falcon@freecalypso.org>
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105 write(sock, hdrbuf, 3);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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106 write(sock, pkt, pktlen);
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Mychaela Falconia <falcon@freecalypso.org>
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107 }