X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/b51259f6a879f69bec5348bddb604d9b3d499941..038ec85e825fc940c1387f64a88ae73b75f6822b:/unix/uxsftp.c diff --git a/unix/uxsftp.c b/unix/uxsftp.c index e9c9f6e6..57f28416 100644 --- a/unix/uxsftp.c +++ b/unix/uxsftp.c @@ -1,224 +1,606 @@ -/* - * uxsftp.c: the Unix-specific parts of PSFTP. - */ - -#include -#include -#include -#include -#include - -#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) -{ - if (!strcmp(name, "UserName")) { - /* - * Remote login username will default to the local username. - */ - 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); - ret = p->pw_name; - } - endpwent(); - - return ret; - } - 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; -} - -/* - * 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); - } -} - -/* - * Wait for some network data and process it. - */ -int ssh_sftp_loop_iteration(void) -{ - fd_set rset, wset, xset; - int i, fdcount, fdsize, *fdlist; - int fd, fdstate, rwx, ret, maxfd; - - fdlist = NULL; - fdcount = fdsize = 0; - - /* Count the currently active fds. */ - i = 0; - for (fd = first_fd(&fdstate, &rwx); fd >= 0; - fd = next_fd(&fdstate, &rwx)) i++; - - if (i < 1) - 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); - } - - do { - ret = select(maxfd, &rset, &wset, &xset, NULL); - } while (ret < 0 && errno == EINTR); - - 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 0; -} - -/* - * Main program: do platform-specific initialisation and then call - * psftp_main(). - */ -int main(int argc, char *argv[]) -{ - uxsel_init(); - return psftp_main(argc, argv); -} +/* + * uxsftp.c: the Unix-specific parts of PSFTP and PSCP. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifndef HAVE_NO_SYS_SELECT_H +#include +#endif + +#include "putty.h" +#include "ssh.h" +#include "psftp.h" +#include "int64.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(struct X11Display *display, Conf *conf) +{ + /* Do nothing, therefore no auth. */ +} +const int platform_uses_x11_unix_by_default = TRUE; + +/* + * 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) +{ + return fontspec_new(""); +} + +Filename *platform_default_filename(const char *name) +{ + if (!strcmp(name, "LogFileName")) + return filename_from_str("putty.log"); + else + return filename_from_str(""); +} + +char *get_ttymode(void *frontend, const char *mode) { return NULL; } + +int get_userpass_input(prompts_t *p, unsigned char *in, int inlen) +{ + int ret; + ret = cmdline_get_passwd_input(p, in, inlen); + if (ret == -1) + ret = console_get_userpass_input(p, in, inlen); + return ret; +} + +/* + * 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, uint64 *size, + unsigned long *mtime, unsigned long *atime, + long *perms) +{ + int fd; + RFile *ret; + + fd = open(name, O_RDONLY); + if (fd < 0) + return NULL; + + ret = snew(RFile); + ret->fd = fd; + + if (size || mtime || atime || perms) { + 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 = uint64_make((statbuf.st_size >> 16) >> 16, + statbuf.st_size); + + if (mtime) + *mtime = statbuf.st_mtime; + + if (atime) + *atime = statbuf.st_atime; + + if (perms) + *perms = statbuf.st_mode; + } + + 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, long perms) +{ + int fd; + WFile *ret; + + fd = open(name, O_CREAT | O_TRUNC | O_WRONLY, + (mode_t)(perms ? perms : 0666)); + if (fd < 0) + return NULL; + + ret = snew(WFile); + ret->fd = fd; + ret->name = dupstr(name); + + return ret; +} + + +WFile *open_existing_wfile(char *name, uint64 *size) +{ + int fd; + WFile *ret; + + fd = open(name, O_APPEND | O_WRONLY); + if (fd < 0) + return NULL; + + ret = snew(WFile); + ret->fd = fd; + ret->name = dupstr(name); + + if (size) { + struct stat statbuf; + if (fstat(fd, &statbuf) < 0) { + fprintf(stderr, "%s: stat: %s\n", name, strerror(errno)); + memset(&statbuf, 0, sizeof(statbuf)); + } + + *size = uint64_make((statbuf.st_size >> 16) >> 16, + statbuf.st_size); + } + + 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); +} + +/* Seek offset bytes through file, from whence, where whence is + FROM_START, FROM_CURRENT, or FROM_END */ +int seek_file(WFile *f, uint64 offset, int whence) +{ + off_t fileofft; + int lseek_whence; + + fileofft = (((off_t) offset.hi << 16) << 16) + offset.lo; + + switch (whence) { + case FROM_START: + lseek_whence = SEEK_SET; + break; + case FROM_CURRENT: + lseek_whence = SEEK_CUR; + break; + case FROM_END: + lseek_whence = SEEK_END; + break; + default: + return -1; + } + + return lseek(f->fd, fileofft, lseek_whence) >= 0 ? 0 : -1; +} + +uint64 get_file_posn(WFile *f) +{ + off_t fileofft; + uint64 ret; + + fileofft = lseek(f->fd, (off_t) 0, SEEK_CUR); + + ret = uint64_make((fileofft >> 16) >> 16, fileofft); + + return ret; +} + +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; + unsigned 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 { + unsigned long next, then; + long ticks; + struct timeval tv, *ptv; + + if (run_timers(now, &next)) { + then = now; + now = GETTICKCOUNT(); + if (now - then > next - then) + ticks = 0; + else + ticks = next - now; + 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 + now = GETTICKCOUNT(); + } 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"); + sfree(buf); + 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"); + sfree(buf); + return NULL; + } + if (ret == 0) { + /* eof on stdin; no error, but no answer either */ + sfree(buf); + return NULL; + } + + if (buf[buflen++] == '\n') { + /* we have a full line */ + return buf; + } + } + } +} + +void frontend_net_error_pending(void) {} + +/* + * Main program: do platform-specific initialisation and then call + * psftp_main(). + */ +int main(int argc, char *argv[]) +{ + uxsel_init(); + return psftp_main(argc, argv); +}