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annotate loadtools/simatr.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 a31ae776de6e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
790
0bbe0213812d fc-simint put together, compiles
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This module implements the stage in fc-simint where ATR bytes
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Mychaela Falconia <falcon@freecalypso.org>
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3 * received from simagent are validated.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8 #include <stdlib.h>
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9
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Mychaela Falconia <falcon@freecalypso.org>
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10 extern int sim_allow_spenh;
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11
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Mychaela Falconia <falcon@freecalypso.org>
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12 extern u_char sim_atr[];
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13 extern unsigned sim_atr_len;
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14
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15 void
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16 sim_atr_validate()
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17 {
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18 unsigned b, p, y, nhist, have_tck;
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19
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20 if (sim_atr_len < 2) {
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21 too_short: fprintf(stderr, "error: ATR from simagent is too short\n");
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22 exit(1);
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23 }
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24 b = sim_atr[1];
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25 p = 2;
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26 nhist = b & 0xF;
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27 y = b & 0xF0;
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28 have_tck = 0;
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29 while (y) {
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30 if (y & 0x10) {
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31 if (p >= sim_atr_len)
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32 goto too_short;
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33 p++;
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34 }
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35 if (y & 0x20) {
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36 if (p >= sim_atr_len)
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37 goto too_short;
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38 p++;
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39 }
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40 if (y & 0x40) {
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41 if (p >= sim_atr_len)
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42 goto too_short;
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43 p++;
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44 }
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45 if (y & 0x80) {
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46 if (p >= sim_atr_len)
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47 goto too_short;
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48 b = sim_atr[p++];
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49 y = b & 0xF0;
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50 if (b & 0x0F)
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51 have_tck = 1;
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52 } else
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53 y = 0;
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54 }
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Mychaela Falconia <falcon@freecalypso.org>
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55 p += nhist + have_tck;
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Mychaela Falconia <falcon@freecalypso.org>
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56 if (p > sim_atr_len)
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57 goto too_short;
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58 if (p < sim_atr_len) {
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59 fprintf(stderr, "error: ATR from simagent is too long\n");
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60 exit(1);
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61 }
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Mychaela Falconia <falcon@freecalypso.org>
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62 if (!have_tck)
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Mychaela Falconia <falcon@freecalypso.org>
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63 return;
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Mychaela Falconia <falcon@freecalypso.org>
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64 /* validate TCK */
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Mychaela Falconia <falcon@freecalypso.org>
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65 b = 0;
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Mychaela Falconia <falcon@freecalypso.org>
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66 for (p = 1; p < sim_atr_len; p++)
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67 b ^= sim_atr[p];
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68 if (b) {
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Mychaela Falconia <falcon@freecalypso.org>
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69 fprintf(stderr, "error: ATR checksum is bad\n");
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70 exit(1);
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71 }
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Mychaela Falconia <falcon@freecalypso.org>
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72 }
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Mychaela Falconia <falcon@freecalypso.org>
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73
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74 void
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Mychaela Falconia <falcon@freecalypso.org>
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75 sim_spenh_logic()
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76 {
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77 static char *targv[2] = {"spenh", 0};
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78
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Mychaela Falconia <falcon@freecalypso.org>
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79 if (sim_atr_len < 3 || !(sim_atr[1] & 0x10) || (sim_atr[2] < 0x94)) {
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Mychaela Falconia <falcon@freecalypso.org>
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80 printf("ATR indicates no support for speed enhancement\n");
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Mychaela Falconia <falcon@freecalypso.org>
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81 return;
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Mychaela Falconia <falcon@freecalypso.org>
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82 }
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Mychaela Falconia <falcon@freecalypso.org>
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83 if (!sim_allow_spenh) {
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Mychaela Falconia <falcon@freecalypso.org>
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84 printf("Speed enhancement disabled with -n option\n");
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Mychaela Falconia <falcon@freecalypso.org>
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85 return;
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Mychaela Falconia <falcon@freecalypso.org>
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86 }
791
a31ae776de6e fc-simint: tell the user when we are requesting spenh
Mychaela Falconia <falcon@freecalypso.org>
parents: 790
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87 printf("Requesting SIM speed enhancement\n");
790
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Mychaela Falconia <falcon@freecalypso.org>
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88 tpinterf_make_cmd(targv);
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Mychaela Falconia <falcon@freecalypso.org>
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89 if (tpinterf_send_cmd() < 0)
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90 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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91 if (tpinterf_pass_output(10))
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Mychaela Falconia <falcon@freecalypso.org>
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92 exit(1);
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Mychaela Falconia <falcon@freecalypso.org>
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93 }