1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * issue.c: issue printing code
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4 | *
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5 | * Copyright (C) 2003 Bastian Blank <waldi@tuxbox.org>
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6 | *
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7 | * Optimize and correcting OCRNL by Vladimir Oleynik <dzo@simtreas.ru>
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8 | *
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9 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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10 | */
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11 |
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12 | #include <sys/param.h> /* MAXHOSTNAMELEN */
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13 | #include <sys/utsname.h>
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14 | #include "libbb.h"
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15 |
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16 | #define LOGIN " login: "
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17 |
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18 | static const char fmtstr_d[] ALIGN1 = "%A, %d %B %Y";
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19 | static const char fmtstr_t[] ALIGN1 = "%H:%M:%S";
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20 |
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21 | void print_login_issue(const char *issue_file, const char *tty)
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22 | {
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23 | FILE *fd;
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24 | int c;
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25 | char buf[256+1];
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26 | const char *outbuf;
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27 | time_t t;
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28 | struct utsname uts;
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29 |
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30 | time(&t);
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31 | uname(&uts);
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32 |
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33 | puts("\r"); /* start a new line */
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34 |
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35 | fd = fopen(issue_file, "r");
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36 | if (!fd)
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37 | return;
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38 | while ((c = fgetc(fd)) != EOF) {
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39 | outbuf = buf;
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40 | buf[0] = c;
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41 | buf[1] = '\0';
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42 | if (c == '\n') {
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43 | buf[1] = '\r';
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44 | buf[2] = '\0';
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45 | }
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46 | if (c == '\\' || c == '%') {
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47 | c = fgetc(fd);
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48 | switch (c) {
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49 | case 's':
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50 | outbuf = uts.sysname;
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51 | break;
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52 | case 'n':
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53 | outbuf = uts.nodename;
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54 | break;
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55 | case 'r':
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56 | outbuf = uts.release;
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57 | break;
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58 | case 'v':
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59 | outbuf = uts.version;
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60 | break;
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61 | case 'm':
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62 | outbuf = uts.machine;
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63 | break;
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64 | case 'D':
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65 | case 'o':
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66 | c = getdomainname(buf, sizeof(buf) - 1);
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67 | buf[c >= 0 ? c : 0] = '\0';
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68 | break;
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69 | case 'd':
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70 | strftime(buf, sizeof(buf), fmtstr_d, localtime(&t));
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71 | break;
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72 | case 't':
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73 | strftime(buf, sizeof(buf), fmtstr_t, localtime(&t));
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74 | break;
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75 | case 'h':
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76 | gethostname(buf, sizeof(buf) - 1);
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77 | buf[sizeof(buf) - 1] = '\0';
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78 | break;
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79 | case 'l':
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80 | outbuf = tty;
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81 | break;
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82 | default:
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83 | buf[0] = c;
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84 | }
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85 | }
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86 | fputs(outbuf, stdout);
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87 | }
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88 | fclose(fd);
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89 | fflush(stdout);
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90 | }
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91 |
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92 | void print_login_prompt(void)
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93 | {
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94 | char buf[MAXHOSTNAMELEN+1];
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95 |
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96 | if (gethostname(buf, MAXHOSTNAMELEN) == 0)
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97 | fputs(buf, stdout);
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98 |
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99 | fputs(LOGIN, stdout);
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100 | fflush(stdout);
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101 | }
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