FreeCalypso > hg > freecalypso-tools

annotate rvinterf/libasync/ttymagic.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 /*
63
09b4fd9b3827 rvinterf/libasync: use the newly adopted exit code convention
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2 * This module contains the tty "magic" code for fc-shell and fc-tmsh.
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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 <unistd.h>
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11 #include <termios.h>
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12
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13 extern int ttyhacks;
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14
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15 struct termios orig_termios, our_termios;
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16
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17 #define MAX_USER_CMD 78
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18 char usercmd[MAX_USER_CMD+1];
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19 int usercmd_len;
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20
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21 void
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22 tty_init()
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23 {
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24 if (!ttyhacks)
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25 return;
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26 tcgetattr(0, &orig_termios);
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27 bcopy(&orig_termios, &our_termios, sizeof(struct termios));
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28 our_termios.c_oflag &= ~(OCRNL | ONOCR | ONLRET);
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29 our_termios.c_lflag &= ~(ICANON | ECHO);
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30 our_termios.c_cc[VMIN] = 1;
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31 our_termios.c_cc[VTIME] = 0;
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32 tcsetattr(0, TCSAFLUSH, &our_termios);
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33 putchar('>');
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34 fflush(stdout);
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35 }
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36
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37 void
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38 tty_cleanup()
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39 {
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40 if (!ttyhacks)
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41 return;
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42 tcsetattr(0, TCSAFLUSH, &orig_termios);
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43 }
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44
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45 void
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46 handle_tty_input()
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47 {
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48 char buf[256];
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49 int i, c, cc;
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50
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51 cc = read(0, buf, sizeof buf);
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52 if (cc <= 0) {
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53 tty_cleanup();
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54 exit(0);
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55 }
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56 for (i = 0; i < cc; i++) {
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57 c = buf[i];
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58 if (c >= ' ' && c <= '~') {
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59 if (usercmd_len >= MAX_USER_CMD)
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60 continue;
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61 usercmd[usercmd_len++] = c;
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62 if (ttyhacks)
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63 putchar(c); /* echo */
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64 continue;
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65 }
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66 switch (c) {
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67 case '\b':
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68 case 0x7F:
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69 if (!usercmd_len)
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70 continue;
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71 usercmd_len--;
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72 if (ttyhacks) {
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73 putchar('\b');
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74 putchar(' ');
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75 putchar('\b');
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76 }
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77 continue;
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78 case '\n':
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79 case '\r':
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80 usercmd[usercmd_len] = '\0';
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81 if (ttyhacks)
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82 putchar('\n'); /* echo */
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83 dispatch_user_cmd();
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84 usercmd_len = 0;
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85 if (ttyhacks)
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86 putchar('>'); /* new prompt */
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87 }
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88 }
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89 }
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90
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91 void
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92 async_msg_output(msg)
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93 char *msg;
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94 {
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95 int msglen, i;
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96
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97 msglen = strlen(msg);
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98 if (ttyhacks)
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99 putchar('\r');
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100 fputs(msg, stdout);
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101 if (ttyhacks)
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102 for (i = msglen; i < usercmd_len + 1; i++)
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103 putchar(' ');
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104 putchar('\n');
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105 if (!ttyhacks)
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106 return;
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107 /* reprint the input line */
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108 putchar('>');
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109 if (!usercmd_len)
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110 return;
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111 fwrite(usercmd, 1, usercmd_len, stdout);
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112 }