#include <ctype.h>
#include <time.h>
#include <sys/socket.h>
+#include <sys/select.h>
+#include <sys/swap.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#include <fcntl.h>
#define closesocket close
#define fcntlsocket fcntl
+#else
+#define select select_s
+
+#ifndef O_NONBLOCK
+#define O_NONBLOCK 0x2000
+#endif
+#ifndef F_SETFL
+#define F_GETFL 101
+#define F_SETFL 102
+#endif
#endif
#define TIMEOUT 15
+static void free_dir(struct ftp_dirent *dir);
+
static int newconn(struct ftp *ftp);
static int sendcmd(struct ftp *ftp, const char *fmt, ...);
static int handle_control(struct ftp *ftp);
static void proc_control(struct ftp *ftp, const char *buf);
static int cproc_active(struct ftp *ftp, int code, const char *buf, void *cls);
+static int cproc_pasv(struct ftp *ftp, int code, const char *buf, void *cls);
static int cproc_pwd(struct ftp *ftp, int code, const char *buf, void *cls);
static int cproc_cwd(struct ftp *ftp, int code, const char *buf, void *cls);
static int cproc_list(struct ftp *ftp, int code, const char *buf, void *cls);
static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls);
+static int cproc_xfer(struct ftp *ftp, int code, const char *buf, void *cls);
+static void dproc_xfer(struct ftp *ftp, const char *buf, int sz, void *cls);
+
struct ftp *ftp_alloc(void)
{
return 0;
}
ftp->ctl = ftp->data = ftp->lis = -1;
+ ftp->passive = 1;
+
+ ftp->dirent = darr_alloc(0, sizeof *ftp->dirent);
return ftp;
}
if(ftp->ctl >= 0) {
ftp_close(ftp);
}
+
+ free_dir(ftp->dirent);
+}
+
+static void free_dir(struct ftp_dirent *dir)
+{
+ int i;
+ for(i=0; i<darr_size(dir); i++) {
+ free(dir[i].name);
+ }
+ darr_free(dir);
}
int ftp_connect(struct ftp *ftp, const char *hostname, int port)
return sptr - sockv;
}
-static void exec_op(struct ftp *ftp, int op, const char *arg)
+static void exec_op(struct ftp *ftp, struct ftp_op *fop)
{
- switch(op) {
+ switch(fop->op) {
+ case FTP_TYPE:
+ ftp_type(ftp, fop->arg);
+ break;
+
case FTP_PWD:
ftp_pwd(ftp);
break;
case FTP_CHDIR:
- ftp_chdir(ftp, arg);
+ ftp_chdir(ftp, fop->arg);
+ break;
+
+ case FTP_CDUP:
+ ftp_chdir(ftp, "..");
break;
case FTP_MKDIR:
- ftp_mkdir(ftp, arg);
+ ftp_mkdir(ftp, fop->arg);
break;
case FTP_RMDIR:
- ftp_rmdir(ftp, arg);
+ ftp_rmdir(ftp, fop->arg);
break;
case FTP_DEL:
- ftp_delete(ftp, arg);
+ ftp_delete(ftp, fop->arg);
break;
case FTP_LIST:
break;
case FTP_RETR:
- ftp_retrieve(ftp, arg);
+ ftp_retrieve(ftp, fop->arg);
break;
case FTP_STORE:
- ftp_store(ftp, arg);
+ ftp_store(ftp, fop->arg);
+ break;
+
+ case FTP_XFER:
+ ftp_transfer(ftp, fop->data);
break;
default:
ftp->qhead = ftp->qhead->next;
}
- exec_op(ftp, fop->op, fop->arg);
+ exec_op(ftp, fop);
free(fop->arg);
free(fop);
struct ftp_op *fop;
if(!ftp->busy && !ftp->qhead) {
- exec_op(ftp, op, arg);
+ struct ftp_op tmp = {0};
+ tmp.op = op;
+ tmp.arg = (char*)arg;
+ exec_op(ftp, &tmp);
return 0;
}
return 0;
}
-int ftp_waitresp(struct ftp *ftp, time_t timeout)
+int ftp_queue_transfer(struct ftp *ftp, struct ftp_transfer *xfer)
+{
+ struct ftp_op *fop;
+
+ if(!ftp->busy && !ftp->qhead) {
+ struct ftp_op tmp = {0};
+ tmp.op = FTP_XFER;
+ tmp.data = xfer;
+ exec_op(ftp, &tmp);
+ return 0;
+ }
+
+ if(!(fop = malloc(sizeof *fop))) {
+ return -1;
+ }
+ fop->op = FTP_XFER;
+ fop->arg = 0;
+ fop->data = xfer;
+ fop->next = 0;
+
+ if(ftp->qhead) {
+ ftp->qtail->next = fop;
+ ftp->qtail = fop;
+ } else {
+ ftp->qhead = ftp->qtail = fop;
+ }
+ return 0;
+}
+
+int ftp_waitresp(struct ftp *ftp, long timeout)
{
fd_set rdset;
struct timeval tv;
static int ftp_active(struct ftp *ftp)
{
struct sockaddr_in sa = {0};
- socklen_t len;
+ int len;
unsigned long addr;
unsigned short port;
return 0;
}
+static int ftp_passive(struct ftp *ftp)
+{
+ if(ftp->lis >= 0) {
+ closesocket(ftp->lis);
+ ftp->lis = -1;
+ }
+ if(ftp->data >= 0) {
+ closesocket(ftp->data);
+ ftp->data = -1;
+ }
+
+ sendcmd(ftp, "PASV");
+ ftp->cproc = cproc_pasv;
+ return 0;
+}
+
int ftp_handle(struct ftp *ftp, int s)
{
if(s == ftp->ctl) {
static int handle_data(struct ftp *ftp, int s)
{
- int rd;
+ int i, rd;
if(ftp->data == -1) {
return -1;
}
- for(;;) {
+ /* get at most 4 packets at a time, to allow returning back to the main loop
+ * to process input
+ */
+ for(i=0; i<4; i++) {
if((rd = recv(ftp->data, ftp->drecv, sizeof ftp->drecv, 0)) == -1) {
if(errno == EINTR) continue;
/* assume EWOULDBLOCK, try again next time */
ftp->status = 0;
errmsg("login failed\n");
break;
+
+ default:
+ ftp->busy = 0;
+
+ /* execute next operation if there's one queued */
+ exec_queued(ftp);
}
}
static int newconn(struct ftp *ftp)
{
- if(ftp_active(ftp) == -1) {
- return -1;
- }
+ ftp_queue(ftp, FTP_TYPE, "I");
ftp_queue(ftp, FTP_PWD, 0);
ftp_queue(ftp, FTP_LIST, 0);
return 0;
return -1;
}
+int ftp_type(struct ftp *ftp, const char *type)
+{
+ int tc = toupper(type[0]);
+ if(tc != 'I' && tc != 'A') {
+ return -1;
+ }
+ sendcmd(ftp, "type %c", tc);
+ return 0;
+}
+
int ftp_pwd(struct ftp *ftp)
{
sendcmd(ftp, "pwd");
int ftp_chdir(struct ftp *ftp, const char *dirname)
{
- sendcmd(ftp, "cwd %s", dirname);
+ if(strcmp(dirname, "..") == 0) {
+ sendcmd(ftp, "cdup");
+ } else {
+ sendcmd(ftp, "cwd %s", dirname);
+ }
ftp->cproc = cproc_cwd;
return 0;
}
return -1;
}
+static int prepare_data(struct ftp *ftp)
+{
+ if(ftp->data >= 0) {
+ return 0;
+ }
+
+ if(ftp->passive) {
+ ftp_passive(ftp);
+ ftp_waitresp(ftp, TIMEOUT);
+ } else {
+ if(ftp_active(ftp) == -1) {
+ return -1;
+ }
+ }
+ if(ftp->data == -1) {
+ return -1;
+ }
+ return 0;
+}
+
struct recvbuf {
char *buf;
long size, bufsz;
{
struct recvbuf *rbuf;
+ if(prepare_data(ftp) == -1) {
+ return -1;
+ }
+
if(!(rbuf = malloc(sizeof *rbuf))) {
errmsg("failed to allocate receive buffer\n");
return -1;
return -1;
}
+#define XFER_BUF_SIZE 1024
+
+int ftp_transfer(struct ftp *ftp, struct ftp_transfer *xfer)
+{
+ if(prepare_data(ftp) == -1) {
+ return -1;
+ }
+
+ if(xfer->op == FTP_RETR) {
+ sendcmd(ftp, "retr %s", xfer->rname);
+ ftp->cproc = cproc_xfer;
+ ftp->dproc = dproc_xfer;
+ ftp->cproc_cls = ftp->dproc_cls = xfer;
+ } else {
+ /* TODO */
+ }
+ return 0;
+}
+
static int get_quoted_text(const char *str, char *buf)
{
int len;
return 0;
}
+static int cproc_pasv(struct ftp *ftp, int code, const char *buf, void *cls)
+{
+ const char *str;
+ unsigned int addr[6];
+ struct sockaddr_in sa;
+ unsigned int ipaddr;
+ int port;
+
+ if(code != 227) {
+ errmsg("ftp_passive failed\n");
+ goto nopasv;
+ }
+
+ str = buf;
+ while(*str) {
+ if(sscanf(str, "%u,%u,%u,%u,%u,%u", addr, addr + 1, addr + 2, addr + 3,
+ addr + 4, addr + 5) == 6) {
+ break;
+ }
+ str++;
+ }
+ if(!*str || (addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]) >= 256) {
+ errmsg("ftp_passive: failed to parse response: %s\n", buf);
+ goto nopasv;
+ }
+ port = (addr[4] << 8) | addr[5];
+ ipaddr = ((unsigned int)addr[0] << 24) | ((unsigned int)addr[1] << 16) |
+ ((unsigned int)addr[2] << 8) | addr[3];
+
+ if((ftp->data = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
+ fprintf(stderr, "ftp_passive: failed to allocate socket\n");
+ goto nopasv;
+ }
+
+ infomsg("passive mode: %d.%d.%d.%d port %d\n", addr[0], addr[1], addr[2], addr[3],
+ port);
+
+ sa.sin_family = AF_INET;
+ sa.sin_addr.s_addr = htonl(ipaddr);
+ sa.sin_port = htons(port);
+
+ if(connect(ftp->data, (struct sockaddr*)&sa, sizeof sa) == -1) {
+ errmsg("ftp_passive: failed to connect to %s:%p\n", inet_ntoa(sa.sin_addr), port);
+ closesocket(ftp->data);
+ ftp->data = -1;
+ goto nopasv;
+ }
+
+ ftp->status = FTP_CONN_PASV;
+ return 0;
+
+nopasv:
+ ftp->passive = 0;
+ ftp_active(ftp);
+ return 0;
+}
+
static int cproc_pwd(struct ftp *ftp, int code, const char *buf, void *cls)
{
char *dirname;
return -1;
}
- free(ftp->curdir_rem);
- ftp->curdir_rem = strdup_nf(dirname);
- ftp->modified = 1;
+ free(ftp->curdir);
+ ftp->curdir = strdup_nf(dirname);
+ ftp->modified = FTP_MOD_DIR;
return 0;
}
static int cproc_cwd(struct ftp *ftp, int code, const char *buf, void *cls)
{
- return -1;
+ if(code != 250) {
+ warnmsg("cwd failed\n");
+ return -1;
+ }
+
+ ftp_queue(ftp, FTP_PWD, 0);
+ ftp_queue(ftp, FTP_LIST, 0);
+ return 0;
}
static int cproc_list(struct ftp *ftp, int code, const char *buf, void *cls)
return 0;
}
-static void free_dirlist(struct ftp_dirent *list)
-{
- struct ftp_dirent *tmp;
-
- while(list) {
- tmp = list;
- list = list->next;
-
- free(tmp->name);
- free(tmp);
- }
-}
-
#define SKIP_FIELD(p) \
do { \
while(*(p) && *(p) != '\n' && !isspace(*(p))) (p)++; \
return 0;
}
+int ftp_direntcmp(const void *a, const void *b)
+{
+ const struct ftp_dirent *da = a, *db = b;
+
+ if(da->type == db->type) {
+ return strcmp(da->name, db->name);
+ }
+ return da->type == FTP_DIR ? -1 : 1;
+}
+
static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls)
{
+ int num;
struct recvbuf *rbuf = cls;
if(sz == 0) {
/* EOF condition, we got the whole list, update directory entries */
char *ptr = rbuf->buf;
char *end = rbuf->buf + rbuf->size;
- struct ftp_dirent *tail = 0;
- struct ftp_dirent *ent;
+ struct ftp_dirent ent;
- free_dirlist(ftp->dent_rem);
- ftp->dent_rem = 0;
+ darr_clear(ftp->dirent);
while(ptr < end) {
- ent = malloc_nf(sizeof *ent);
- if(parse_dirent(ent, ptr) != -1) {
- ent->next = 0;
- if(!tail) {
- ftp->dent_rem = tail = ent;
- } else {
- tail->next = ent;
- tail = ent;
- }
+ if(parse_dirent(&ent, ptr) != -1) {
+ darr_push(ftp->dirent, &ent);
}
while(ptr < end && *ptr != '\n' && *ptr != '\r') ptr++;
while(ptr < end && (*ptr == '\r' || *ptr == '\n')) ptr++;
}
- ftp->modified |= FTP_MOD_REMDIR;
+ ftp->modified |= FTP_MOD_DIR;
free(rbuf->buf);
free(rbuf);
ftp->dproc = 0;
+
+ num = darr_size(ftp->dirent);
+ qsort(ftp->dirent, num, sizeof *ftp->dirent, ftp_direntcmp);
return;
}
memcpy(rbuf->buf + rbuf->size, buf, sz);
rbuf->size += sz;
}
+
+static int cproc_xfer(struct ftp *ftp, int code, const char *buf, void *cls)
+{
+ char *ptr;
+ struct ftp_transfer *xfer = cls;
+
+ if(code < 200) {
+ /* expect more */
+ if(code == 150 && (ptr = strchr(buf, '('))) {
+ /* update total size */
+ sscanf(ptr, "(%ld bytes)", &xfer->total);
+ }
+ return 1;
+ }
+
+ if(code >= 400) {
+ errmsg("failed to retrieve file\n");
+ }
+ return 0;
+}
+
+static void dproc_xfer(struct ftp *ftp, const char *buf, int sz, void *cls)
+{
+ struct ftp_transfer *xfer = cls;
+
+ if(xfer->op == FTP_RETR) {
+ if(sz == 0) {
+ /* EOF condition, got the whole file */
+ if(xfer->fp) {
+ fclose(xfer->fp);
+ xfer->fp = 0;
+ }
+
+ if(xfer->done) {
+ xfer->done(ftp, xfer);
+ }
+ return;
+ }
+
+ if(xfer->fp) {
+ ((char*)buf)[sz] = 0;
+ fwrite(buf, 1, sz, xfer->fp);
+
+ } else if(xfer->mem) {
+ int prevsz = darr_size(xfer->mem);
+ darr_resize(xfer->mem, prevsz + sz);
+ memcpy(xfer->mem + prevsz, buf, sz);
+ }
+
+ xfer->count += sz;
+ if(xfer->count > xfer->total) {
+ xfer->count = xfer->total;
+ }
+
+ } else { /* FTP_STOR */
+ /* TODO */
+ }
+}
+
+const char *ftp_curdir(struct ftp *ftp)
+{
+ return ftp->curdir;
+}
+
+int ftp_num_dirent(struct ftp *ftp)
+{
+ return darr_size(ftp->dirent);
+}
+
+struct ftp_dirent *ftp_dirent(struct ftp *ftp, int idx)
+{
+ return ftp->dirent + idx;
+}
projects / oftp / blobdiff