2 * PuTTY miscellaneous Unix stuff
13 #include <sys/types.h>
18 unsigned long getticks(void)
21 * We want to use milliseconds rather than the microseconds or
22 * nanoseconds given by the underlying clock functions, because we
23 * need a decent number of them to fit into a 32-bit word so it
24 * can be used for keepalives.
26 #if defined HAVE_CLOCK_GETTIME && defined HAVE_DECL_CLOCK_MONOTONIC
28 /* Use CLOCK_MONOTONIC if available, so as to be unconfused if
29 * the system clock changes. */
31 if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
32 return ts.tv_sec * TICKSPERSEC +
33 ts.tv_nsec / (1000000000 / TICKSPERSEC);
38 gettimeofday(&tv, NULL);
39 return tv.tv_sec * TICKSPERSEC + tv.tv_usec / (1000000 / TICKSPERSEC);
43 Filename *filename_from_str(const char *str)
45 Filename *ret = snew(Filename);
46 ret->path = dupstr(str);
50 Filename *filename_copy(const Filename *fn)
52 return filename_from_str(fn->path);
55 const char *filename_to_str(const Filename *fn)
60 int filename_equal(const Filename *f1, const Filename *f2)
62 return !strcmp(f1->path, f2->path);
65 int filename_is_null(const Filename *fn)
70 void filename_free(Filename *fn)
76 int filename_serialise(const Filename *f, void *vdata)
78 char *data = (char *)vdata;
79 int len = strlen(f->path) + 1; /* include trailing NUL */
81 strcpy(data, f->path);
85 Filename *filename_deserialise(void *vdata, int maxsize, int *used)
87 char *data = (char *)vdata;
89 end = memchr(data, '\0', maxsize);
94 return filename_from_str(data);
98 static FILE *debug_fp = NULL;
100 void dputs(char *buf)
103 debug_fp = fopen("debug.log", "w");
106 write(1, buf, strlen(buf));
108 fputs(buf, debug_fp);
113 char *get_username(void)
116 uid_t uid = getuid();
117 char *user, *ret = NULL;
120 * First, find who we think we are using getlogin. If this
121 * agrees with our uid, we'll go along with it. This should
122 * allow sharing of uids between several login names whilst
123 * coping correctly with people who have su'ed.
131 if (p && p->pw_uid == uid) {
133 * The result of getlogin() really does correspond to
139 * If that didn't work, for whatever reason, we'll do
140 * the simpler version: look up our uid in the password
141 * file and map it straight to a name.
154 * Display the fingerprints of the PGP Master Keys to the user.
155 * (This is here rather than in uxcons because it's appropriate even for
158 void pgp_fingerprints(void)
160 fputs("These are the fingerprints of the PuTTY PGP Master Keys. They can\n"
161 "be used to establish a trust path from this executable to another\n"
162 "one. See the manual for more information.\n"
163 "(Note: these fingerprints have nothing to do with SSH!)\n"
165 "PuTTY Master Key (RSA), 1024-bit:\n"
166 " " PGP_RSA_MASTER_KEY_FP "\n"
167 "PuTTY Master Key (DSA), 1024-bit:\n"
168 " " PGP_DSA_MASTER_KEY_FP "\n", stdout);
172 * Set and clear fcntl options on a file descriptor. We don't
173 * realistically expect any of these operations to fail (the most
174 * plausible error condition is EBADF, but we always believe ourselves
175 * to be passing a valid fd so even that's an assertion-fail sort of
176 * response), so we don't make any effort to return sensible error
177 * codes to the caller - we just log to standard error and die
178 * unceremoniously. However, nonblock and no_nonblock do return the
179 * previous state of O_NONBLOCK.
181 void cloexec(int fd) {
184 fdflags = fcntl(fd, F_GETFD);
186 fprintf(stderr, "%d: fcntl(F_GETFD): %s\n", fd, strerror(errno));
189 if (fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC) < 0) {
190 fprintf(stderr, "%d: fcntl(F_SETFD): %s\n", fd, strerror(errno));
194 void noncloexec(int fd) {
197 fdflags = fcntl(fd, F_GETFD);
199 fprintf(stderr, "%d: fcntl(F_GETFD): %s\n", fd, strerror(errno));
202 if (fcntl(fd, F_SETFD, fdflags & ~FD_CLOEXEC) < 0) {
203 fprintf(stderr, "%d: fcntl(F_SETFD): %s\n", fd, strerror(errno));
207 int nonblock(int fd) {
210 fdflags = fcntl(fd, F_GETFL);
212 fprintf(stderr, "%d: fcntl(F_GETFL): %s\n", fd, strerror(errno));
215 if (fcntl(fd, F_SETFL, fdflags | O_NONBLOCK) < 0) {
216 fprintf(stderr, "%d: fcntl(F_SETFL): %s\n", fd, strerror(errno));
220 return fdflags & O_NONBLOCK;
222 int no_nonblock(int fd) {
225 fdflags = fcntl(fd, F_GETFL);
227 fprintf(stderr, "%d: fcntl(F_GETFL): %s\n", fd, strerror(errno));
230 if (fcntl(fd, F_SETFL, fdflags & ~O_NONBLOCK) < 0) {
231 fprintf(stderr, "%d: fcntl(F_SETFL): %s\n", fd, strerror(errno));
235 return fdflags & O_NONBLOCK;
238 FILE *f_open(const Filename *filename, char const *mode, int is_private)
241 return fopen(filename->path, mode);
244 assert(mode[0] == 'w'); /* is_private is meaningless for read,
245 and tricky for append */
246 fd = open(filename->path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
249 return fdopen(fd, mode);
253 FontSpec *fontspec_new(const char *name)
255 FontSpec *f = snew(FontSpec);
256 f->name = dupstr(name);
259 FontSpec *fontspec_copy(const FontSpec *f)
261 return fontspec_new(f->name);
263 void fontspec_free(FontSpec *f)
268 int fontspec_serialise(FontSpec *f, void *data)
270 int len = strlen(f->name);
272 strcpy(data, f->name);
273 return len + 1; /* include trailing NUL */
275 FontSpec *fontspec_deserialise(void *vdata, int maxsize, int *used)
277 char *data = (char *)vdata;
278 char *end = memchr(data, '\0', maxsize);
281 *used = end - data + 1;
282 return fontspec_new(data);