FreeCalypso > hg > freecalypso-tools

annotate rvinterf/l1filter/pktsort.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 * 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 char **filter_list;
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19
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20 static
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21 is_filter_match()
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22 {
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23 char **fp;
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24 int len;
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25
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26 for (fp = filter_list; *fp; fp++) {
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27 len = strlen(*fp);
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28 if (rvi_msg_len < len + 3)
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29 continue;
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30 if (strncmp(rvi_msg + 2, *fp, len))
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31 continue;
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32 if (rvi_msg[len+2] != ' ')
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33 continue;
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34 return 1;
0
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35 }
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36 return 0;
0
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37 }
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38
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39 static void
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40 print_l1_trace()
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41 {
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42 u_char *dp, *endp;
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43 int c, newline;
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44
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45 dp = rvi_msg + 2;
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46 endp = rvi_msg + rvi_msg_len;
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47 while (dp < endp) {
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48 c = *dp++;
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49 if (c == '\r')
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50 continue;
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51 if (c == '\n') {
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52 putchar(c);
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53 newline = 1;
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54 continue;
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55 }
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56 newline = 0;
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57 if (c & 0x80) {
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58 putchar('M');
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59 putchar('-');
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60 c &= 0x7F;
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61 }
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62 if (c == 0x7F) {
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63 putchar('^');
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64 putchar('?');
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65 continue;
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66 }
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67 if (c < 0x20) {
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68 putchar('^');
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69 c += '@';
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70 }
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71 putchar(c);
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72 }
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73 if (!newline)
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74 putchar('\n');
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75 }
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76
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77 static void
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78 l1_packet_rx()
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79 {
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80 if (is_filter_match())
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81 print_l1_trace();
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82 }
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83
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84 void
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85 process_pkt_from_target()
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86 {
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87 switch (rvi_msg[1]) {
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88 case RVT_L1_HEADER:
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89 l1_packet_rx();
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90 return;
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91 default:
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92 fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n",
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93 rvi_msg[1]);
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94 exit(ERROR_RVINTERF);
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95 }
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96 }