[u/mdw/putty] / unix / uxsftp.c

/*
 * uxsftp.c: the Unix-specific parts of PSFTP and PSCP.
 */

#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <fcntl.h>
#include <dirent.h>
#include <unistd.h>
#include <utime.h>
#include <errno.h>
#include <assert.h>
#include <glob.h>
#ifndef HAVE_NO_SYS_SELECT_H
#include <sys/select.h>
#endif

#include "putty.h"
#include "psftp.h"

/*
 * In PSFTP our selects are synchronous, so these functions are
 * empty stubs.
 */
int uxsel_input_add(int fd, int rwx) { return 0; }
void uxsel_input_remove(int id) { }

char *x_get_default(const char *key)
{
    return NULL;		       /* this is a stub */
}

void platform_get_x11_auth(char *display, int *protocol,
                           unsigned char *data, int *datalen)
{
    /* Do nothing, therefore no auth. */
}

/*
 * Default settings that are specific to PSFTP.
 */
char *platform_default_s(const char *name)
{
    return NULL;
}

int platform_default_i(const char *name, int def)
{
    return def;
}

FontSpec platform_default_fontspec(const char *name)
{
    FontSpec ret;
    *ret.name = '\0';
    return ret;
}

Filename platform_default_filename(const char *name)
{
    Filename ret;
    if (!strcmp(name, "LogFileName"))
	strcpy(ret.path, "putty.log");
    else
	*ret.path = '\0';
    return ret;
}

char *get_ttymode(void *frontend, const char *mode) { return NULL; }

/*
 * Stubs for the GUI feedback mechanism in Windows PSCP.
 */
void gui_update_stats(char *name, unsigned long size,
		      int percentage, unsigned long elapsed,
		      unsigned long done, unsigned long eta,
		      unsigned long ratebs) {}
void gui_send_errcount(int list, int errs) {}
void gui_send_char(int is_stderr, int c) {}
void gui_enable(char *arg) {}


/*
 * Set local current directory. Returns NULL on success, or else an
 * error message which must be freed after printing.
 */
char *psftp_lcd(char *dir)
{
    if (chdir(dir) < 0)
	return dupprintf("%s: chdir: %s", dir, strerror(errno));
    else
	return NULL;
}

/*
 * Get local current directory. Returns a string which must be
 * freed.
 */
char *psftp_getcwd(void)
{
    char *buffer, *ret;
    int size = 256;

    buffer = snewn(size, char);
    while (1) {
	ret = getcwd(buffer, size);
	if (ret != NULL)
	    return ret;
	if (errno != ERANGE) {
	    sfree(buffer);
	    return dupprintf("[cwd unavailable: %s]", strerror(errno));
	}
	/*
	 * Otherwise, ERANGE was returned, meaning the buffer
	 * wasn't big enough.
	 */
	size = size * 3 / 2;
	buffer = sresize(buffer, size, char);
    }
}

struct RFile {
    int fd;
};

RFile *open_existing_file(char *name, unsigned long *size,
			  unsigned long *mtime, unsigned long *atime)
{
    int fd;
    RFile *ret;

    fd = open(name, O_RDONLY);
    if (fd < 0)
	return NULL;

    ret = snew(RFile);
    ret->fd = fd;

    if (size || mtime || atime) {
	struct stat statbuf;
	if (fstat(fd, &statbuf) < 0) {
	    fprintf(stderr, "%s: stat: %s\n", name, strerror(errno));
	    memset(&statbuf, 0, sizeof(statbuf));
	}

	if (size)
	    *size = statbuf.st_size;

	if (mtime)
	    *mtime = statbuf.st_mtime;

	if (atime)
	    *atime = statbuf.st_atime;
    }

    return ret;
}

int read_from_file(RFile *f, void *buffer, int length)
{
    return read(f->fd, buffer, length);
}

void close_rfile(RFile *f)
{
    close(f->fd);
    sfree(f);
}

struct WFile {
    int fd;
    char *name;
};

WFile *open_new_file(char *name)
{
    int fd;
    WFile *ret;

    fd = open(name, O_CREAT | O_TRUNC | O_WRONLY, 0666);
    if (fd < 0)
	return NULL;

    ret = snew(WFile);
    ret->fd = fd;
    ret->name = dupstr(name);

    return ret;
}

int write_to_file(WFile *f, void *buffer, int length)
{
    char *p = (char *)buffer;
    int so_far = 0;

    /* Keep trying until we've really written as much as we can. */
    while (length > 0) {
	int ret = write(f->fd, p, length);

	if (ret < 0)
	    return ret;

	if (ret == 0)
	    break;

	p += ret;
	length -= ret;
	so_far += ret;
    }

    return so_far;
}

void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
{
    struct utimbuf ut;

    ut.actime = atime;
    ut.modtime = mtime;

    utime(f->name, &ut);
}

/* Closes and frees the WFile */
void close_wfile(WFile *f)
{
    close(f->fd);
    sfree(f->name);
    sfree(f);
}

int file_type(char *name)
{
    struct stat statbuf;

    if (stat(name, &statbuf) < 0) {
	if (errno != ENOENT)
	    fprintf(stderr, "%s: stat: %s\n", name, strerror(errno));
	return FILE_TYPE_NONEXISTENT;
    }

    if (S_ISREG(statbuf.st_mode))
	return FILE_TYPE_FILE;

    if (S_ISDIR(statbuf.st_mode))
	return FILE_TYPE_DIRECTORY;

    return FILE_TYPE_WEIRD;
}

struct DirHandle {
    DIR *dir;
};

DirHandle *open_directory(char *name)
{
    DIR *dir;
    DirHandle *ret;

    dir = opendir(name);
    if (!dir)
	return NULL;

    ret = snew(DirHandle);
    ret->dir = dir;
    return ret;
}

char *read_filename(DirHandle *dir)
{
    struct dirent *de;

    do {
	de = readdir(dir->dir);
	if (de == NULL)
	    return NULL;
    } while ((de->d_name[0] == '.' &&
	      (de->d_name[1] == '\0' ||
	       (de->d_name[1] == '.' && de->d_name[2] == '\0'))));

    return dupstr(de->d_name);
}

void close_directory(DirHandle *dir)
{
    closedir(dir->dir);
    sfree(dir);
}

int test_wildcard(char *name, int cmdline)
{
    struct stat statbuf;

    if (stat(name, &statbuf) == 0) {
	return WCTYPE_FILENAME;
    } else if (cmdline) {
	/*
	 * On Unix, we never need to parse wildcards coming from
	 * the command line, because the shell will have expanded
	 * them into a filename list already.
	 */
	return WCTYPE_NONEXISTENT;
    } else {
	glob_t globbed;
	int ret = WCTYPE_NONEXISTENT;

	if (glob(name, GLOB_ERR, NULL, &globbed) == 0) {
	    if (globbed.gl_pathc > 0)
		ret = WCTYPE_WILDCARD;
	    globfree(&globbed);
	}

	return ret;
    }
}

/*
 * Actually return matching file names for a local wildcard.
 */
struct WildcardMatcher {
    glob_t globbed;
    int i;
};
WildcardMatcher *begin_wildcard_matching(char *name) {
    WildcardMatcher *ret = snew(WildcardMatcher);

    if (glob(name, 0, NULL, &ret->globbed) < 0) {
	sfree(ret);
	return NULL;
    }

    ret->i = 0;

    return ret;
}
char *wildcard_get_filename(WildcardMatcher *dir) {
    if (dir->i < dir->globbed.gl_pathc) {
	return dupstr(dir->globbed.gl_pathv[dir->i++]);
    } else
	return NULL;
}
void finish_wildcard_matching(WildcardMatcher *dir) {
    globfree(&dir->globbed);
    sfree(dir);
}

int vet_filename(char *name)
{
    if (strchr(name, '/'))
	return FALSE;

    if (name[0] == '.' && (!name[1] || (name[1] == '.' && !name[2])))
	return FALSE;

    return TRUE;
}

int create_directory(char *name)
{
    return mkdir(name, 0777) == 0;
}

char *dir_file_cat(char *dir, char *file)
{
    return dupcat(dir, "/", file, NULL);
}

/*
 * Do a select() between all currently active network fds and
 * optionally stdin.
 */
static int ssh_sftp_do_select(int include_stdin, int no_fds_ok)
{
    fd_set rset, wset, xset;
    int i, fdcount, fdsize, *fdlist;
    int fd, fdstate, rwx, ret, maxfd;
    long now = GETTICKCOUNT();

    fdlist = NULL;
    fdcount = fdsize = 0;

    do {

	/* Count the currently active fds. */
	i = 0;
	for (fd = first_fd(&fdstate, &rwx); fd >= 0;
	     fd = next_fd(&fdstate, &rwx)) i++;

	if (i < 1 && !no_fds_ok)
	    return -1;		       /* doom */

	/* Expand the fdlist buffer if necessary. */
	if (i > fdsize) {
	    fdsize = i + 16;
	    fdlist = sresize(fdlist, fdsize, int);
	}

	FD_ZERO(&rset);
	FD_ZERO(&wset);
	FD_ZERO(&xset);
	maxfd = 0;

	/*
	 * Add all currently open fds to the select sets, and store
	 * them in fdlist as well.
	 */
	fdcount = 0;
	for (fd = first_fd(&fdstate, &rwx); fd >= 0;
	     fd = next_fd(&fdstate, &rwx)) {
	    fdlist[fdcount++] = fd;
	    if (rwx & 1)
		FD_SET_MAX(fd, maxfd, rset);
	    if (rwx & 2)
		FD_SET_MAX(fd, maxfd, wset);
	    if (rwx & 4)
		FD_SET_MAX(fd, maxfd, xset);
	}

	if (include_stdin)
	    FD_SET_MAX(0, maxfd, rset);

	do {
	    long next, ticks;
	    struct timeval tv, *ptv;

	    if (run_timers(now, &next)) {
		ticks = next - GETTICKCOUNT();
		if (ticks <= 0)
		    ticks = 1;	       /* just in case */
		tv.tv_sec = ticks / 1000;
		tv.tv_usec = ticks % 1000 * 1000;
		ptv = &tv;
	    } else {
		ptv = NULL;
	    }
	    ret = select(maxfd, &rset, &wset, &xset, ptv);
	    if (ret == 0)
		now = next;
	    else {
		long newnow = GETTICKCOUNT();
		/*
		 * Check to see whether the system clock has
		 * changed massively during the select.
		 */
		if (newnow - now < 0 || newnow - now > next - now) {
		    /*
		     * If so, look at the elapsed time in the
		     * select and use it to compute a new
		     * tickcount_offset.
		     */
		    long othernow = now + tv.tv_sec * 1000 + tv.tv_usec / 1000;
		    /* So we'd like GETTICKCOUNT to have returned othernow,
		     * but instead it return newnow. Hence ... */
		    tickcount_offset += othernow - newnow;
		    now = othernow;
		} else {
		    now = newnow;
		}
	    }
	} while (ret < 0 && errno != EINTR);
    } while (ret == 0);

    if (ret < 0) {
	perror("select");
	exit(1);
    }

    for (i = 0; i < fdcount; i++) {
	fd = fdlist[i];
	/*
	 * We must process exceptional notifications before
	 * ordinary readability ones, or we may go straight
	 * past the urgent marker.
	 */
	if (FD_ISSET(fd, &xset))
	    select_result(fd, 4);
	if (FD_ISSET(fd, &rset))
	    select_result(fd, 1);
	if (FD_ISSET(fd, &wset))
	    select_result(fd, 2);
    }

    sfree(fdlist);

    return FD_ISSET(0, &rset) ? 1 : 0;
}

/*
 * Wait for some network data and process it.
 */
int ssh_sftp_loop_iteration(void)
{
    return ssh_sftp_do_select(FALSE, FALSE);
}

/*
 * Read a PSFTP command line from stdin.
 */
char *ssh_sftp_get_cmdline(char *prompt, int no_fds_ok)
{
    char *buf;
    int buflen, bufsize, ret;

    fputs(prompt, stdout);
    fflush(stdout);

    buf = NULL;
    buflen = bufsize = 0;

    while (1) {
	ret = ssh_sftp_do_select(TRUE, no_fds_ok);
	if (ret < 0) {
	    printf("connection died\n");
	    return NULL;	       /* woop woop */
	}
	if (ret > 0) {
	    if (buflen >= bufsize) {
		bufsize = buflen + 512;
		buf = sresize(buf, bufsize, char);
	    }
	    ret = read(0, buf+buflen, 1);
	    if (ret < 0) {
		perror("read");
		return NULL;
	    }
	    if (ret == 0) {
		/* eof on stdin; no error, but no answer either */
		return NULL;
	    }

	    if (buf[buflen++] == '\n') {
		/* we have a full line */
		return buf;
	    }
	}
    }
}

/*
 * Main program: do platform-specific initialisation and then call
 * psftp_main().
 */
int main(int argc, char *argv[])
{
    uxsel_init();
    return psftp_main(argc, argv);
}
Commit	Line	Data
876eefd4	1	/*
	2	* uxsftp.c: the Unix-specific parts of PSFTP and PSCP.
	3	*/
	4
	5	#include <sys/time.h>
	6	#include <sys/types.h>
	7	#include <sys/stat.h>
18609086	8	#include <stdlib.h>
876eefd4	9	#include <fcntl.h>
	10	#include <dirent.h>
	11	#include <unistd.h>
	12	#include <utime.h>
	13	#include <errno.h>
	14	#include <assert.h>
9c77ddf6	15	#include <glob.h>
154c73d5	16	#ifndef HAVE_NO_SYS_SELECT_H
	17	#include <sys/select.h>
	18	#endif
876eefd4	19
	20	#include "putty.h"
	21	#include "psftp.h"
	22
	23	/*
	24	* In PSFTP our selects are synchronous, so these functions are
	25	* empty stubs.
	26	*/
	27	int uxsel_input_add(int fd, int rwx) { return 0; }
	28	void uxsel_input_remove(int id) { }
	29
	30	char x_get_default(const char key)
	31	{
	32	return NULL; /* this is a stub */
	33	}
	34
	35	void platform_get_x11_auth(char display, int protocol,
	36	unsigned char data, int datalen)
	37	{
	38	/* Do nothing, therefore no auth. */
	39	}
	40
	41	/*
	42	* Default settings that are specific to PSFTP.
	43	*/
	44	char platform_default_s(const char name)
	45	{
	46	return NULL;
	47	}
	48
	49	int platform_default_i(const char *name, int def)
	50	{
	51	return def;
	52	}
	53
	54	FontSpec platform_default_fontspec(const char *name)
	55	{
	56	FontSpec ret;
	57	*ret.name = '\0';
	58	return ret;
	59	}
	60
	61	Filename platform_default_filename(const char *name)
	62	{
	63	Filename ret;
	64	if (!strcmp(name, "LogFileName"))
	65	strcpy(ret.path, "putty.log");
	66	else
	67	*ret.path = '\0';
	68	return ret;
	69	}
	70
c6ccd5c2	71	char get_ttymode(void frontend, const char *mode) { return NULL; }
c6ccd5c2	72
876eefd4	73	/*
	74	* Stubs for the GUI feedback mechanism in Windows PSCP.
	75	*/
	76	void gui_update_stats(char *name, unsigned long size,
	77	int percentage, unsigned long elapsed,
	78	unsigned long done, unsigned long eta,
	79	unsigned long ratebs) {}
	80	void gui_send_errcount(int list, int errs) {}
	81	void gui_send_char(int is_stderr, int c) {}
	82	void gui_enable(char *arg) {}
	83
	84
	85	/*
	86	* Set local current directory. Returns NULL on success, or else an
	87	* error message which must be freed after printing.
	88	*/
	89	char psftp_lcd(char dir)
	90	{
	91	if (chdir(dir) < 0)
	92	return dupprintf("%s: chdir: %s", dir, strerror(errno));
	93	else
	94	return NULL;
	95	}
	96
	97	/*
	98	* Get local current directory. Returns a string which must be
	99	* freed.
	100	*/
	101	char *psftp_getcwd(void)
	102	{
	103	char buffer, ret;
	104	int size = 256;
	105
	106	buffer = snewn(size, char);
	107	while (1) {
	108	ret = getcwd(buffer, size);
	109	if (ret != NULL)
	110	return ret;
	111	if (errno != ERANGE) {
	112	sfree(buffer);
	113	return dupprintf("[cwd unavailable: %s]", strerror(errno));
	114	}
	115	/*
	116	* Otherwise, ERANGE was returned, meaning the buffer
	117	* wasn't big enough.
	118	*/
	119	size = size * 3 / 2;
	120	buffer = sresize(buffer, size, char);
	121	}
	122	}
	123
	124	struct RFile {
	125	int fd;
	126	};
	127
	128	RFile open_existing_file(char name, unsigned long *size,
	129	unsigned long mtime, unsigned long atime)
	130	{
	131	int fd;
	132	RFile *ret;
	133
	134	fd = open(name, O_RDONLY);
	135	if (fd < 0)
	136	return NULL;
137
138	ret = snew(RFile);
139	ret->fd = fd;
140
141	if (size \|\| mtime \|\| atime) {
142	struct stat statbuf;
143	if (fstat(fd, &statbuf) < 0) {
144	fprintf(stderr, "%s: stat: %s\n", name, strerror(errno));
145	memset(&statbuf, 0, sizeof(statbuf));
146	}
147
148	if (size)
149	*size = statbuf.st_size;
150
151	if (mtime)
152	*mtime = statbuf.st_mtime;
153
154	if (atime)
155	*atime = statbuf.st_atime;
156	}
157
158	return ret;
159	}
160
161	int read_from_file(RFile f, void buffer, int length)
162	{
163	return read(f->fd, buffer, length);
164	}
165
166	void close_rfile(RFile *f)
167	{
168	close(f->fd);
169	sfree(f);
170	}
171
172	struct WFile {
173	int fd;
174	char *name;
175	};
176
177	WFile open_new_file(char name)
178	{
179	int fd;
180	WFile *ret;
181
182	fd = open(name, O_CREAT \| O_TRUNC \| O_WRONLY, 0666);
183	if (fd < 0)
184	return NULL;
185
186	ret = snew(WFile);
187	ret->fd = fd;
188	ret->name = dupstr(name);
189
190	return ret;
191	}
192
193	int write_to_file(WFile f, void buffer, int length)
194	{
195	char p = (char )buffer;
196	int so_far = 0;
197
198	/* Keep trying until we've really written as much as we can. */
199	while (length > 0) {
200	int ret = write(f->fd, p, length);
201
202	if (ret < 0)
203	return ret;
204
205	if (ret == 0)
206	break;
207
208	p += ret;
209	length -= ret;
210	so_far += ret;
211	}
212
213	return so_far;
214	}
215
216	void set_file_times(WFile *f, unsigned long mtime, unsigned long atime)
217	{
218	struct utimbuf ut;
219
220	ut.actime = atime;
221	ut.modtime = mtime;
222
223	utime(f->name, &ut);
224	}
225
226	/* Closes and frees the WFile */
227	void close_wfile(WFile *f)
228	{
229	close(f->fd);
230	sfree(f->name);
231	sfree(f);
232	}
233
234	int file_type(char *name)
235	{
236	struct stat statbuf;
237
238	if (stat(name, &statbuf) < 0) {
239	if (errno != ENOENT)
240	fprintf(stderr, "%s: stat: %s\n", name, strerror(errno));
241	return FILE_TYPE_NONEXISTENT;
242	}
243
244	if (S_ISREG(statbuf.st_mode))
245	return FILE_TYPE_FILE;
246
247	if (S_ISDIR(statbuf.st_mode))
248	return FILE_TYPE_DIRECTORY;
249
250	return FILE_TYPE_WEIRD;
251	}
252
253	struct DirHandle {
254	DIR *dir;
255	};
256
257	DirHandle open_directory(char name)
258	{
259	DIR *dir;
260	DirHandle *ret;
261
262	dir = opendir(name);
263	if (!dir)
264	return NULL;
265
266	ret = snew(DirHandle);
267	ret->dir = dir;
268	return ret;
269	}
270
271	char read_filename(DirHandle dir)
272	{
273	struct dirent *de;
274
275	do {
276	de = readdir(dir->dir);
277	if (de == NULL)
278	return NULL;
279	} while ((de->d_name[0] == '.' &&
280	(de->d_name[1] == '\0' \|\|
281	(de->d_name[1] == '.' && de->d_name[2] == '\0'))));
282
283	return dupstr(de->d_name);
284	}
285
286	void close_directory(DirHandle *dir)
287	{
288	closedir(dir->dir);
289	sfree(dir);
290	}
291
292	int test_wildcard(char *name, int cmdline)
293	{
876eefd4	294	struct stat statbuf;
876eefd4	295
9c77ddf6	296	if (stat(name, &statbuf) == 0) {
876eefd4	297	return WCTYPE_FILENAME;
9c77ddf6	298	} else if (cmdline) {
	299	/*
	300	* On Unix, we never need to parse wildcards coming from
	301	* the command line, because the shell will have expanded
	302	* them into a filename list already.
	303	*/
	304	return WCTYPE_NONEXISTENT;
	305	} else {
	306	glob_t globbed;
	307	int ret = WCTYPE_NONEXISTENT;
	308
	309	if (glob(name, GLOB_ERR, NULL, &globbed) == 0) {
	310	if (globbed.gl_pathc > 0)
	311	ret = WCTYPE_WILDCARD;
	312	globfree(&globbed);
	313	}
	314
	315	return ret;
	316	}
876eefd4	317	}
	318
	319	/*
9c77ddf6	320	* Actually return matching file names for a local wildcard.
876eefd4	321	*/
876eefd4	322	struct WildcardMatcher {
9c77ddf6	323	glob_t globbed;
9c77ddf6	324	int i;
876eefd4	325	};
9c77ddf6	326	WildcardMatcher begin_wildcard_matching(char name) {
	327	WildcardMatcher *ret = snew(WildcardMatcher);
	328
	329	if (glob(name, 0, NULL, &ret->globbed) < 0) {
	330	sfree(ret);
	331	return NULL;
	332	}
	333
	334	ret->i = 0;
	335
	336	return ret;
	337	}
	338	char wildcard_get_filename(WildcardMatcher dir) {
	339	if (dir->i < dir->globbed.gl_pathc) {
	340	return dupstr(dir->globbed.gl_pathv[dir->i++]);
	341	} else
	342	return NULL;
	343	}
	344	void finish_wildcard_matching(WildcardMatcher *dir) {
	345	globfree(&dir->globbed);
	346	sfree(dir);
	347	}
876eefd4	348
e9d14678	349	int vet_filename(char *name)
	350	{
	351	if (strchr(name, '/'))
	352	return FALSE;
	353
	354	if (name[0] == '.' && (!name[1] \|\| (name[1] == '.' && !name[2])))
	355	return FALSE;
	356
	357	return TRUE;
	358	}
	359
876eefd4	360	int create_directory(char *name)
	361	{
	362	return mkdir(name, 0777) == 0;
	363	}
	364
	365	char dir_file_cat(char dir, char *file)
	366	{
	367	return dupcat(dir, "/", file, NULL);
	368	}
	369
	370	/*
39934deb	371	* Do a select() between all currently active network fds and
39934deb	372	* optionally stdin.
876eefd4	373	*/
65857773	374	static int ssh_sftp_do_select(int include_stdin, int no_fds_ok)
876eefd4	375	{
	376	fd_set rset, wset, xset;
	377	int i, fdcount, fdsize, *fdlist;
	378	int fd, fdstate, rwx, ret, maxfd;
39934deb	379	long now = GETTICKCOUNT();
876eefd4	380
	381	fdlist = NULL;
	382	fdcount = fdsize = 0;
	383
39934deb	384	do {
876eefd4	385
39934deb	386	/* Count the currently active fds. */
	387	i = 0;
	388	for (fd = first_fd(&fdstate, &rwx); fd >= 0;
	389	fd = next_fd(&fdstate, &rwx)) i++;
876eefd4	390
65857773	391	if (i < 1 && !no_fds_ok)
39934deb	392	return -1; /* doom */
876eefd4	393
39934deb	394	/* Expand the fdlist buffer if necessary. */
	395	if (i > fdsize) {
	396	fdsize = i + 16;
	397	fdlist = sresize(fdlist, fdsize, int);
	398	}
876eefd4	399
39934deb	400	FD_ZERO(&rset);
	401	FD_ZERO(&wset);
	402	FD_ZERO(&xset);
	403	maxfd = 0;
876eefd4	404
39934deb	405	/*
	406	* Add all currently open fds to the select sets, and store
	407	* them in fdlist as well.
	408	*/
	409	fdcount = 0;
	410	for (fd = first_fd(&fdstate, &rwx); fd >= 0;
	411	fd = next_fd(&fdstate, &rwx)) {
	412	fdlist[fdcount++] = fd;
	413	if (rwx & 1)
	414	FD_SET_MAX(fd, maxfd, rset);
	415	if (rwx & 2)
	416	FD_SET_MAX(fd, maxfd, wset);
	417	if (rwx & 4)
	418	FD_SET_MAX(fd, maxfd, xset);
	419	}
	420
	421	if (include_stdin)
	422	FD_SET_MAX(0, maxfd, rset);
	423
	424	do {
	425	long next, ticks;
	426	struct timeval tv, *ptv;
	427
	428	if (run_timers(now, &next)) {
	429	ticks = next - GETTICKCOUNT();
	430	if (ticks <= 0)
	431	ticks = 1; /* just in case */
	432	tv.tv_sec = ticks / 1000;
	433	tv.tv_usec = ticks % 1000 * 1000;
	434	ptv = &tv;
	435	} else {
	436	ptv = NULL;
	437	}
	438	ret = select(maxfd, &rset, &wset, &xset, ptv);
	439	if (ret == 0)
	440	now = next;
2ac3322e	441	else {
	442	long newnow = GETTICKCOUNT();
	443	/*
	444	* Check to see whether the system clock has
	445	* changed massively during the select.
	446	*/
	447	if (newnow - now < 0 \|\| newnow - now > next - now) {
	448	/*
	449	* If so, look at the elapsed time in the
	450	* select and use it to compute a new
	451	* tickcount_offset.
	452	*/
	453	long othernow = now + tv.tv_sec * 1000 + tv.tv_usec / 1000;
	454	/* So we'd like GETTICKCOUNT to have returned othernow,
	455	* but instead it return newnow. Hence ... */
	456	tickcount_offset += othernow - newnow;
	457	now = othernow;
	458	} else {
	459	now = newnow;
	460	}
	461	}
39934deb	462	} while (ret < 0 && errno != EINTR);
39934deb	463	} while (ret == 0);
876eefd4	464
	465	if (ret < 0) {
	466	perror("select");
	467	exit(1);
	468	}
	469
	470	for (i = 0; i < fdcount; i++) {
	471	fd = fdlist[i];
	472	/*
	473	* We must process exceptional notifications before
	474	* ordinary readability ones, or we may go straight
	475	* past the urgent marker.
	476	*/
	477	if (FD_ISSET(fd, &xset))
	478	select_result(fd, 4);
	479	if (FD_ISSET(fd, &rset))
	480	select_result(fd, 1);
	481	if (FD_ISSET(fd, &wset))
	482	select_result(fd, 2);
	483	}
	484
	485	sfree(fdlist);
	486
39934deb	487	return FD_ISSET(0, &rset) ? 1 : 0;
	488	}
	489
	490	/*
	491	* Wait for some network data and process it.
	492	*/
	493	int ssh_sftp_loop_iteration(void)
	494	{
65857773	495	return ssh_sftp_do_select(FALSE, FALSE);
39934deb	496	}
	497
	498	/*
	499	* Read a PSFTP command line from stdin.
	500	*/
65857773	501	char ssh_sftp_get_cmdline(char prompt, int no_fds_ok)
39934deb	502	{
	503	char *buf;
	504	int buflen, bufsize, ret;
	505
	506	fputs(prompt, stdout);
	507	fflush(stdout);
	508
	509	buf = NULL;
	510	buflen = bufsize = 0;
	511
	512	while (1) {
65857773	513	ret = ssh_sftp_do_select(TRUE, no_fds_ok);
39934deb	514	if (ret < 0) {
	515	printf("connection died\n");
	516	return NULL; /* woop woop */
	517	}
	518	if (ret > 0) {
	519	if (buflen >= bufsize) {
	520	bufsize = buflen + 512;
	521	buf = sresize(buf, bufsize, char);
	522	}
	523	ret = read(0, buf+buflen, 1);
	524	if (ret < 0) {
	525	perror("read");
	526	return NULL;
	527	}
	528	if (ret == 0) {
	529	/* eof on stdin; no error, but no answer either */
	530	return NULL;
	531	}
	532
	533	if (buf[buflen++] == '\n') {
	534	/* we have a full line */
	535	return buf;
	536	}
	537	}
	538	}
876eefd4	539	}
	540
	541	/*
	542	* Main program: do platform-specific initialisation and then call
	543	* psftp_main().
	544	*/
	545	int main(int argc, char *argv[])
	546	{
	547	uxsel_init();
	548	return psftp_main(argc, argv);
	549	}