* PuTTY miscellaneous Unix stuff
*/
+#include <fcntl.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <unistd.h>
#include <sys/time.h>
+#include <sys/types.h>
+#include <pwd.h>
#include "putty.h"
struct timeval tv;
gettimeofday(&tv, NULL);
/*
- * This will wrap around approximately every 4000 seconds, i.e.
- * just over an hour, which is more than enough.
+ * We want to use milliseconds rather than microseconds,
+ * because we need a decent number of them to fit into a 32-bit
+ * word so it can be used for keepalives.
*/
- return tv.tv_sec * 1000000 + tv.tv_usec;
+ return tv.tv_sec * TICKSPERSEC + tv.tv_usec / (1000000 / TICKSPERSEC);
}
-Filename filename_from_str(char *str)
+Filename *filename_from_str(const char *str)
{
- Filename ret;
- strncpy(ret.path, str, sizeof(ret.path));
- ret.path[sizeof(ret.path)-1] = '\0';
+ Filename *ret = snew(Filename);
+ ret->path = dupstr(str);
return ret;
}
-char *filename_to_str(Filename fn)
+Filename *filename_copy(const Filename *fn)
{
- return fn.path;
+ return filename_from_str(fn->path);
}
-int filename_equal(Filename f1, Filename f2)
+const char *filename_to_str(const Filename *fn)
{
- return !strcmp(f1.path, f2.path);
+ return fn->path;
}
-int filename_is_null(Filename fn)
+int filename_equal(const Filename *f1, const Filename *f2)
{
- return !*fn.path;
+ return !strcmp(f1->path, f2->path);
+}
+
+int filename_is_null(const Filename *fn)
+{
+ return !fn->path[0];
+}
+
+void filename_free(Filename *fn)
+{
+ sfree(fn->path);
+ sfree(fn);
+}
+
+int filename_serialise(const Filename *f, void *vdata)
+{
+ char *data = (char *)vdata;
+ int len = strlen(f->path) + 1; /* include trailing NUL */
+ if (data) {
+ strcpy(data, f->path);
+ }
+ return len;
+}
+Filename *filename_deserialise(void *vdata, int maxsize, int *used)
+{
+ char *data = (char *)vdata;
+ char *end;
+ end = memchr(data, '\0', maxsize);
+ if (!end)
+ return NULL;
+ end++;
+ *used = end - data;
+ return filename_from_str(data);
+}
+
+#ifdef DEBUG
+static FILE *debug_fp = NULL;
+
+void dputs(char *buf)
+{
+ if (!debug_fp) {
+ debug_fp = fopen("debug.log", "w");
+ }
+
+ write(1, buf, strlen(buf));
+
+ fputs(buf, debug_fp);
+ fflush(debug_fp);
+}
+#endif
+
+char *get_username(void)
+{
+ struct passwd *p;
+ uid_t uid = getuid();
+ char *user, *ret = NULL;
+
+ /*
+ * First, find who we think we are using getlogin. If this
+ * agrees with our uid, we'll go along with it. This should
+ * allow sharing of uids between several login names whilst
+ * coping correctly with people who have su'ed.
+ */
+ user = getlogin();
+ setpwent();
+ if (user)
+ p = getpwnam(user);
+ else
+ p = NULL;
+ if (p && p->pw_uid == uid) {
+ /*
+ * The result of getlogin() really does correspond to
+ * our uid. Fine.
+ */
+ ret = user;
+ } else {
+ /*
+ * If that didn't work, for whatever reason, we'll do
+ * the simpler version: look up our uid in the password
+ * file and map it straight to a name.
+ */
+ p = getpwuid(uid);
+ if (!p)
+ return NULL;
+ ret = p->pw_name;
+ }
+ endpwent();
+
+ return dupstr(ret);
+}
+
+/*
+ * Display the fingerprints of the PGP Master Keys to the user.
+ * (This is here rather than in uxcons because it's appropriate even for
+ * Unix GUI apps.)
+ */
+void pgp_fingerprints(void)
+{
+ fputs("These are the fingerprints of the PuTTY PGP Master Keys. They can\n"
+ "be used to establish a trust path from this executable to another\n"
+ "one. See the manual for more information.\n"
+ "(Note: these fingerprints have nothing to do with SSH!)\n"
+ "\n"
+ "PuTTY Master Key (RSA), 1024-bit:\n"
+ " " PGP_RSA_MASTER_KEY_FP "\n"
+ "PuTTY Master Key (DSA), 1024-bit:\n"
+ " " PGP_DSA_MASTER_KEY_FP "\n", stdout);
+}
+
+/*
+ * Set FD_CLOEXEC on a file descriptor
+ */
+int cloexec(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFD);
+ if (fdflags == -1) return -1;
+ return fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC);
+}
+
+FILE *f_open(const Filename *filename, char const *mode, int is_private)
+{
+ if (!is_private) {
+ return fopen(filename->path, mode);
+ } else {
+ int fd;
+ assert(mode[0] == 'w'); /* is_private is meaningless for read,
+ and tricky for append */
+ fd = open(filename->path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+ if (fd < 0)
+ return NULL;
+ return fdopen(fd, mode);
+ }
+}
+
+FontSpec *fontspec_new(const char *name)
+{
+ FontSpec *f = snew(FontSpec);
+ f->name = dupstr(name);
+ return f;
+}
+FontSpec *fontspec_copy(const FontSpec *f)
+{
+ return fontspec_new(f->name);
+}
+void fontspec_free(FontSpec *f)
+{
+ sfree(f->name);
+ sfree(f);
+}
+int fontspec_serialise(FontSpec *f, void *data)
+{
+ int len = strlen(f->name);
+ if (data)
+ strcpy(data, f->name);
+ return len + 1; /* include trailing NUL */
+}
+FontSpec *fontspec_deserialise(void *vdata, int maxsize, int *used)
+{
+ char *data = (char *)vdata;
+ char *end = memchr(data, '\0', maxsize);
+ if (!end)
+ return NULL;
+ *used = end - data + 1;
+ return fontspec_new(data);
}