FreeCalypso > hg > freecalypso-tools

annotate rvinterf/l1filter/rvif_rx.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 ea458ee48691
children
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1 /*
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2 * This module implements message Rx from 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 #include "exitcodes.h"
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12 extern int sock;
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14 u_char rvi_msg[LOCALSOCK_MAX_MSG];
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15 int rvi_msg_len;
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17 static int rx_state, rx_left;
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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 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(ERROR_RVINTERF);
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51 default:
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52 bad:
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53 fprintf(stderr,
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54 "Error: unexpected message type %02X from rvinterf\n",
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55 rvi_msg[0]);
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56 exit(ERROR_RVINTERF);
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57 }
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58 }
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59
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60 void
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61 handle_rvinterf_input()
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62 {
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63 int cc;
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65 cc = read(sock, rx_ptr, rx_left);
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66 if (cc <= 0) {
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67 perror("read from rvinterf socket");
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68 exit(ERROR_RVINTERF);
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69 }
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70 rx_ptr += cc;
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71 rx_left -= cc;
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72 if (rx_left)
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73 return;
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74 /* got the thing, process it */
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75 if (rx_state) {
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76 process_msg_from_rvinterf();
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77 localsock_prep_for_length_rx();
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78 } else {
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79 rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1];
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80 if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) {
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81 fprintf(stderr,
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82 "Invalid length from rvinterf: %02X%02X\n",
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83 rvi_msg[0], rvi_msg[1]);
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84 exit(ERROR_RVINTERF);
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85 }
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86 prep_for_message_rx();
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87 }
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88 }