* PuTTY miscellaneous Unix stuff
*/
+#include <fcntl.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <errno.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include "putty.h"
-/*
- * We want to use milliseconds rather than microseconds or nanoseconds,
- * because we need a decent number of them to fit into a 32-bit
- * word so it can be used for keepalives.
- */
unsigned long getticks(void)
{
- struct timeval tv;
-#ifdef CLOCK_MONOTONIC
- struct timespec ts;
- if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
- return ts.tv_sec * 1000 + ts.tv_nsec / 1000000;
+ /*
+ * We want to use milliseconds rather than the microseconds or
+ * nanoseconds given by the underlying clock functions, because we
+ * need a decent number of them to fit into a 32-bit word so it
+ * can be used for keepalives.
+ */
+#if defined HAVE_CLOCK_GETTIME && defined HAVE_DECL_CLOCK_MONOTONIC
+ {
+ /* Use CLOCK_MONOTONIC if available, so as to be unconfused if
+ * the system clock changes. */
+ struct timespec ts;
+ if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
+ return ts.tv_sec * TICKSPERSEC +
+ ts.tv_nsec / (1000000000 / TICKSPERSEC);
+ }
#endif
- gettimeofday(&tv, NULL);
- return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+ {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ return tv.tv_sec * TICKSPERSEC + tv.tv_usec / (1000000 / TICKSPERSEC);
+ }
}
-Filename filename_from_str(const 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;
}
+Filename *filename_copy(const Filename *fn)
+{
+ return filename_from_str(fn->path);
+}
+
const char *filename_to_str(const Filename *fn)
{
return fn->path;
}
-int filename_equal(Filename f1, Filename f2)
+int filename_equal(const Filename *f1, const Filename *f2)
+{
+ return !strcmp(f1->path, f2->path);
+}
+
+int filename_is_null(const Filename *fn)
+{
+ return !fn->path[0];
+}
+
+void filename_free(Filename *fn)
{
- return !strcmp(f1.path, f2.path);
+ sfree(fn->path);
+ sfree(fn);
}
-int filename_is_null(Filename 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)
{
- return !*fn.path;
+ 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
"PuTTY Master Key (DSA), 1024-bit:\n"
" " PGP_DSA_MASTER_KEY_FP "\n", stdout);
}
+
+/*
+ * Set and clear fcntl options on a file descriptor. We don't
+ * realistically expect any of these operations to fail (the most
+ * plausible error condition is EBADF, but we always believe ourselves
+ * to be passing a valid fd so even that's an assertion-fail sort of
+ * response), so we don't make any effort to return sensible error
+ * codes to the caller - we just log to standard error and die
+ * unceremoniously. However, nonblock and no_nonblock do return the
+ * previous state of O_NONBLOCK.
+ */
+void cloexec(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFD);
+ if (fdflags < 0) {
+ fprintf(stderr, "%d: fcntl(F_GETFD): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+ if (fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC) < 0) {
+ fprintf(stderr, "%d: fcntl(F_SETFD): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+}
+void noncloexec(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFD);
+ if (fdflags < 0) {
+ fprintf(stderr, "%d: fcntl(F_GETFD): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+ if (fcntl(fd, F_SETFD, fdflags & ~FD_CLOEXEC) < 0) {
+ fprintf(stderr, "%d: fcntl(F_SETFD): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+}
+int nonblock(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFL);
+ if (fdflags < 0) {
+ fprintf(stderr, "%d: fcntl(F_GETFL): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+ if (fcntl(fd, F_SETFL, fdflags | O_NONBLOCK) < 0) {
+ fprintf(stderr, "%d: fcntl(F_SETFL): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+
+ return fdflags & O_NONBLOCK;
+}
+int no_nonblock(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFL);
+ if (fdflags < 0) {
+ fprintf(stderr, "%d: fcntl(F_GETFL): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+ if (fcntl(fd, F_SETFL, fdflags & ~O_NONBLOCK) < 0) {
+ fprintf(stderr, "%d: fcntl(F_SETFL): %s\n", fd, strerror(errno));
+ exit(1);
+ }
+
+ return fdflags & O_NONBLOCK;
+}
+
+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);
+}
projects / u / mdw / putty / blobdiff