Windows PSCP now links against winsftp.c, and scp.c is now a

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

/*\r
 * uxsftp.c: the Unix-specific parts of PSFTP and PSCP.\r
 */\r
\r
#include <sys/time.h>\r
#include <sys/types.h>\r
#include <unistd.h>\r
#include <errno.h>\r
\r
#include "putty.h"\r
#include "psftp.h"\r
\r
/*\r
 * In PSFTP our selects are synchronous, so these functions are\r
 * empty stubs.\r
 */\r
int uxsel_input_add(int fd, int rwx) { return 0; }\r
void uxsel_input_remove(int id) { }\r
\r
char *x_get_default(const char *key)\r
{\r
    return NULL;		       /* this is a stub */\r
}\r
\r
void platform_get_x11_auth(char *display, int *protocol,\r
                           unsigned char *data, int *datalen)\r
{\r
    /* Do nothing, therefore no auth. */\r
}\r
\r
/*\r
 * Default settings that are specific to PSFTP.\r
 */\r
char *platform_default_s(const char *name)\r
{\r
    return NULL;\r
}\r
\r
int platform_default_i(const char *name, int def)\r
{\r
    return def;\r
}\r
\r
FontSpec platform_default_fontspec(const char *name)\r
{\r
    FontSpec ret;\r
    *ret.name = '\0';\r
    return ret;\r
}\r
\r
Filename platform_default_filename(const char *name)\r
{\r
    Filename ret;\r
    if (!strcmp(name, "LogFileName"))\r
	strcpy(ret.path, "putty.log");\r
    else\r
	*ret.path = '\0';\r
    return ret;\r
}\r
\r
/*\r
 * Stubs for the GUI feedback mechanism in Windows PSCP.\r
 */\r
void gui_update_stats(char *name, unsigned long size,\r
		      int percentage, unsigned long elapsed,\r
		      unsigned long done, unsigned long eta,\r
		      unsigned long ratebs) {}\r
void gui_send_errcount(int list, int errs) {}\r
void gui_send_char(int is_stderr, int c) {}\r
void gui_enable(char *arg) {}\r
\r
\r
/*\r
 * Set local current directory. Returns NULL on success, or else an\r
 * error message which must be freed after printing.\r
 */\r
char *psftp_lcd(char *dir)\r
{\r
    if (chdir(dir) < 0)\r
	return dupprintf("%s: chdir: %s", dir, strerror(errno));\r
    else\r
	return NULL;\r
}\r
\r
/*\r
 * Get local current directory. Returns a string which must be\r
 * freed.\r
 */\r
char *psftp_getcwd(void)\r
{\r
    char *buffer, *ret;\r
    int size = 256;\r
\r
    buffer = snewn(size, char);\r
    while (1) {\r
	ret = getcwd(buffer, size);\r
	if (ret != NULL)\r
	    return ret;\r
	if (errno != ERANGE) {\r
	    sfree(buffer);\r
	    return dupprintf("[cwd unavailable: %s]", strerror(errno));\r
	}\r
	/*\r
	 * Otherwise, ERANGE was returned, meaning the buffer\r
	 * wasn't big enough.\r
	 */\r
	size = size * 3 / 2;\r
	buffer = sresize(buffer, size, char);\r
    }\r
}\r
\r
/*\r
 * Wait for some network data and process it.\r
 */\r
int ssh_sftp_loop_iteration(void)\r
{\r
    fd_set rset, wset, xset;\r
    int i, fdcount, fdsize, *fdlist;\r
    int fd, fdstate, rwx, ret, maxfd;\r
\r
    fdlist = NULL;\r
    fdcount = fdsize = 0;\r
\r
    /* Count the currently active fds. */\r
    i = 0;\r
    for (fd = first_fd(&fdstate, &rwx); fd >= 0;\r
	 fd = next_fd(&fdstate, &rwx)) i++;\r
\r
    if (i < 1)\r
	return -1;		       /* doom */\r
\r
    /* Expand the fdlist buffer if necessary. */\r
    if (i > fdsize) {\r
	fdsize = i + 16;\r
	fdlist = sresize(fdlist, fdsize, int);\r
    }\r
\r
    FD_ZERO(&rset);\r
    FD_ZERO(&wset);\r
    FD_ZERO(&xset);\r
    maxfd = 0;\r
\r
    /*\r
     * Add all currently open fds to the select sets, and store\r
     * them in fdlist as well.\r
     */\r
    fdcount = 0;\r
    for (fd = first_fd(&fdstate, &rwx); fd >= 0;\r
	 fd = next_fd(&fdstate, &rwx)) {\r
	fdlist[fdcount++] = fd;\r
	if (rwx & 1)\r
	    FD_SET_MAX(fd, maxfd, rset);\r
	if (rwx & 2)\r
	    FD_SET_MAX(fd, maxfd, wset);\r
	if (rwx & 4)\r
	    FD_SET_MAX(fd, maxfd, xset);\r
    }\r
\r
    do {\r
	ret = select(maxfd, &rset, &wset, &xset, NULL);\r
    } while (ret < 0 && errno == EINTR);\r
\r
    if (ret < 0) {\r
	perror("select");\r
	exit(1);\r
    }\r
\r
    for (i = 0; i < fdcount; i++) {\r
	fd = fdlist[i];\r
	/*\r
	 * We must process exceptional notifications before\r
	 * ordinary readability ones, or we may go straight\r
	 * past the urgent marker.\r
	 */\r
	if (FD_ISSET(fd, &xset))\r
	    select_result(fd, 4);\r
	if (FD_ISSET(fd, &rset))\r
	    select_result(fd, 1);\r
	if (FD_ISSET(fd, &wset))\r
	    select_result(fd, 2);\r
    }\r
\r
    sfree(fdlist);\r
\r
    return 0;\r
}\r
\r
/*\r
 * Main program: do platform-specific initialisation and then call\r
 * psftp_main().\r
 */\r
int main(int argc, char *argv[])\r
{\r
    uxsel_init();\r
    return psftp_main(argc, argv);\r
}\r