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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 | /* |
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18 | * We want to use milliseconds rather than microseconds, |
19 | * because we need a decent number of them to fit into a 32-bit |
20 | * word so it can be used for keepalives. |
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21 | */ |
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22 | return tv.tv_sec * 1000 + tv.tv_usec / 1000; |
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23 | } |
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24 | |
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25 | Filename filename_from_str(const char *str) |
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26 | { |
27 | Filename ret; |
28 | strncpy(ret.path, str, sizeof(ret.path)); |
29 | ret.path[sizeof(ret.path)-1] = '\0'; |
30 | return ret; |
31 | } |
32 | |
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33 | const char *filename_to_str(const Filename *fn) |
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34 | { |
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35 | return fn->path; |
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36 | } |
37 | |
38 | int filename_equal(Filename f1, Filename f2) |
39 | { |
40 | return !strcmp(f1.path, f2.path); |
41 | } |
42 | |
43 | int filename_is_null(Filename fn) |
44 | { |
45 | return !*fn.path; |
46 | } |
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47 | |
48 | #ifdef DEBUG |
49 | static FILE *debug_fp = NULL; |
50 | |
51 | void dputs(char *buf) |
52 | { |
53 | if (!debug_fp) { |
54 | debug_fp = fopen("debug.log", "w"); |
55 | } |
56 | |
57 | write(1, buf, strlen(buf)); |
58 | |
59 | fputs(buf, debug_fp); |
60 | fflush(debug_fp); |
61 | } |
62 | #endif |
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63 | |
64 | char *get_username(void) |
65 | { |
66 | struct passwd *p; |
67 | uid_t uid = getuid(); |
68 | char *user, *ret = NULL; |
69 | |
70 | /* |
71 | * First, find who we think we are using getlogin. If this |
72 | * agrees with our uid, we'll go along with it. This should |
73 | * allow sharing of uids between several login names whilst |
74 | * coping correctly with people who have su'ed. |
75 | */ |
76 | user = getlogin(); |
77 | setpwent(); |
78 | if (user) |
79 | p = getpwnam(user); |
80 | else |
81 | p = NULL; |
82 | if (p && p->pw_uid == uid) { |
83 | /* |
84 | * The result of getlogin() really does correspond to |
85 | * our uid. Fine. |
86 | */ |
87 | ret = user; |
88 | } else { |
89 | /* |
90 | * If that didn't work, for whatever reason, we'll do |
91 | * the simpler version: look up our uid in the password |
92 | * file and map it straight to a name. |
93 | */ |
94 | p = getpwuid(uid); |
95 | if (!p) |
96 | return NULL; |
97 | ret = p->pw_name; |
98 | } |
99 | endpwent(); |
100 | |
101 | return dupstr(ret); |
102 | } |