| 1 | /* |
| 2 | * PuTTY miscellaneous Unix stuff |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <unistd.h> |
| 7 | #include <sys/time.h> |
| 8 | #include <sys/types.h> |
| 9 | #include <pwd.h> |
| 10 | |
| 11 | #include "putty.h" |
| 12 | |
| 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 | } |
| 23 | |
| 24 | |
| 25 | |
| 26 | Filename filename_from_str(const char *str) |
| 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 | |
| 34 | const char *filename_to_str(const Filename *fn) |
| 35 | { |
| 36 | return fn->path; |
| 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 | } |
| 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 |
| 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 | } |