FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/at.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 10f4062e049b
children
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0
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1 /*
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2 * Functions for the AT-over-RVTMUX interface
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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 <sys/errno.h>
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7 #include <stdio.h>
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8 #include <ctype.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <stdlib.h>
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12 #include <unistd.h>
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13 #include "pktmux.h"
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14 #include "limits.h"
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15 #include "exitcodes.h"
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16
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17 extern char *rvinterf_ttyport;
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18 extern u_char rvi_msg[];
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19 extern int rvi_msg_len;
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20 extern int oneshot_nowait;
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21 extern int sock;
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22
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23 send_string_to_ati(str)
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24 char *str;
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25 {
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26 unsigned len;
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27 u_char sendpkt[MAX_PKT_TO_TARGET+1];
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28
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29 len = strlen(str);
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30 if (len + 1 > MAX_PKT_TO_TARGET) {
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31 printf("error: max pkt to target limit exceeded\n");
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32 return(ERROR_USAGE);
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33 }
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34 /* fill out the packet */
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35 sendpkt[0] = RVT_AT_HEADER;
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36 strcpy(sendpkt + 1, str);
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37 /* send it! */
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38 send_pkt_to_target(sendpkt, len + 1);
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39 return(0);
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40 }
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41
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42 send_unterm_string_to_ati(str)
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43 char *str;
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44 {
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45 unsigned len;
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46 u_char sendpkt[MAX_PKT_TO_TARGET+1];
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47
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48 len = strlen(str);
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49 if (len + 2 > MAX_PKT_TO_TARGET) {
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50 printf("error: max pkt to target limit exceeded\n");
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51 return(ERROR_USAGE);
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52 }
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53 /* fill out the packet */
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54 sendpkt[0] = RVT_AT_HEADER;
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55 sendpkt[1] = 0x01;
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56 strcpy(sendpkt + 2, str);
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57 /* send it! */
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58 send_pkt_to_target(sendpkt, len + 2);
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59 return(0);
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60 }
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61
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62 void
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63 cmd_sendat(arg)
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64 char *arg;
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65 {
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66 while (isspace(*arg))
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67 arg++;
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68 if (!*arg) {
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69 printf("error: missing string argument\n");
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70 return;
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71 }
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72 ati_rx_control(1);
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73 send_string_to_ati(arg);
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74 }
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75
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76 void
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77 cmd_unterm(arg)
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78 char *arg;
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79 {
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80 while (isspace(*arg))
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81 arg++;
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82 if (!*arg) {
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83 printf("error: missing string argument\n");
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84 return;
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85 }
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86 ati_rx_control(1);
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87 send_unterm_string_to_ati(arg);
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88 }
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89
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90 oneshot_at_command(cmd)
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91 char *cmd;
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92 {
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93 fd_set fds;
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94 int rc;
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95
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96 if (!oneshot_nowait) {
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97 if (rvinterf_ttyport)
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98 usleep(30000);
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99 init(); /* to catch the response properly */
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100 ati_rx_control(1);
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101 }
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102 rc = send_string_to_ati(cmd);
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103 if (rc)
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104 exit(rc);
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105 if (oneshot_nowait)
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106 exit(0);
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107 /* wait for response */
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108 for (;;) {
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109 FD_ZERO(&fds);
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110 FD_SET(sock, &fds);
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111 rc = select(sock+1, &fds, 0, 0, 0);
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112 if (rc < 0) {
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113 if (errno == EINTR)
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114 continue;
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115 perror("select");
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116 exit(ERROR_UNIX);
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117 }
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118 if (FD_ISSET(sock, &fds))
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119 handle_rvinterf_input();
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120 }
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121 }
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122
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123 cmd_str_oneshot(argc, argv)
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124 char **argv;
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125 {
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126 return oneshot_at_command(argv[1]);
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127 }
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128
451
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129 cmd_unterm_oneshot(argc, argv)
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130 char **argv;
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131 {
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132 return send_unterm_string_to_ati(argv[1]);
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133 }
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134
75
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135 void
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136 oneshot_at_check_response()
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137 {
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138 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "OK", 2))
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139 exit(0);
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140 if (rvi_msg_len == 4 && !strncmp(rvi_msg + 2, "> ", 2))
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141 exit(0);
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142 if (rvi_msg_len == 7 && !strncmp(rvi_msg + 2, "ERROR", 5))
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143 exit(ERROR_TARGET);
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144 if (rvi_msg_len == 6 && !strncmp(rvi_msg + 2, "BUSY", 4))
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145 exit(ERROR_TARGET);
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146 if (rvi_msg_len == 12 && !strncmp(rvi_msg + 2, "NO CARRIER", 10))
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147 exit(ERROR_TARGET);
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148 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CME ERROR", 10))
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149 exit(ERROR_TARGET);
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150 if (rvi_msg_len >= 12 && !strncmp(rvi_msg + 2, "+CMS ERROR", 10))
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151 exit(ERROR_TARGET);
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152 }