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1 | /* |
2 | * PuTTY miscellaneous Unix stuff |
3 | */ |
4 | |
5 | #include <stdio.h> |
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6 | #include <unistd.h> |
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7 | #include <sys/time.h> |
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8 | #include <sys/types.h> |
9 | #include <pwd.h> |
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10 | |
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11 | #include "putty.h" |
12 | |
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13 | unsigned long getticks(void) |
14 | { |
15 | struct timeval tv; |
16 | gettimeofday(&tv, NULL); |
17 | /* |
18 | * This will wrap around approximately every 4000 seconds, i.e. |
19 | * just over an hour, which is more than enough. |
20 | */ |
21 | return tv.tv_sec * 1000000 + tv.tv_usec; |
22 | } |
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23 | |
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24 | |
25 | |
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26 | Filename filename_from_str(const char *str) |
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27 | { |
28 | Filename ret; |
29 | strncpy(ret.path, str, sizeof(ret.path)); |
30 | ret.path[sizeof(ret.path)-1] = '\0'; |
31 | return ret; |
32 | } |
33 | |
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34 | const char *filename_to_str(const Filename *fn) |
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35 | { |
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36 | return fn->path; |
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37 | } |
38 | |
39 | int filename_equal(Filename f1, Filename f2) |
40 | { |
41 | return !strcmp(f1.path, f2.path); |
42 | } |
43 | |
44 | int filename_is_null(Filename fn) |
45 | { |
46 | return !*fn.path; |
47 | } |
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48 | |
49 | #ifdef DEBUG |
50 | static FILE *debug_fp = NULL; |
51 | |
52 | void dputs(char *buf) |
53 | { |
54 | if (!debug_fp) { |
55 | debug_fp = fopen("debug.log", "w"); |
56 | } |
57 | |
58 | write(1, buf, strlen(buf)); |
59 | |
60 | fputs(buf, debug_fp); |
61 | fflush(debug_fp); |
62 | } |
63 | #endif |
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64 | |
65 | char *get_username(void) |
66 | { |
67 | struct passwd *p; |
68 | uid_t uid = getuid(); |
69 | char *user, *ret = NULL; |
70 | |
71 | /* |
72 | * First, find who we think we are using getlogin. If this |
73 | * agrees with our uid, we'll go along with it. This should |
74 | * allow sharing of uids between several login names whilst |
75 | * coping correctly with people who have su'ed. |
76 | */ |
77 | user = getlogin(); |
78 | setpwent(); |
79 | if (user) |
80 | p = getpwnam(user); |
81 | else |
82 | p = NULL; |
83 | if (p && p->pw_uid == uid) { |
84 | /* |
85 | * The result of getlogin() really does correspond to |
86 | * our uid. Fine. |
87 | */ |
88 | ret = user; |
89 | } else { |
90 | /* |
91 | * If that didn't work, for whatever reason, we'll do |
92 | * the simpler version: look up our uid in the password |
93 | * file and map it straight to a name. |
94 | */ |
95 | p = getpwuid(uid); |
96 | if (!p) |
97 | return NULL; |
98 | ret = p->pw_name; |
99 | } |
100 | endpwent(); |
101 | |
102 | return dupstr(ret); |
103 | } |