X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fftp.c;h=f62a3a42c1b53a88357b2373455b55a6807463cc;hb=7690b174f121007c511f40d69c70d72e6953b5a9;hp=7cdf8ff703e5e93a803d3f378b8b8b57cf1e6edb;hpb=ddf0e24c7f600826b88571391a8a294499a14865;p=oftp

diff --git a/src/ftp.c b/src/ftp.c
index 7cdf8ff..f62a3a4 100644
--- a/src/ftp.c
+++ b/src/ftp.c
@@ -6,6 +6,8 @@
 #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>
@@ -18,6 +20,16 @@
 #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
@@ -31,12 +43,16 @@ static int handle_data(struct ftp *ftp, int s);
 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)
 {
@@ -46,9 +62,9 @@ struct ftp *ftp_alloc(void)
 		return 0;
 	}
 	ftp->ctl = ftp->data = ftp->lis = -1;
+	ftp->passive = 1;
 
-	ftp->dirent[0] = darr_alloc(0, sizeof *ftp->dirent[0]);
-	ftp->dirent[1] = darr_alloc(0, sizeof *ftp->dirent[1]);
+	ftp->dirent = darr_alloc(0, sizeof *ftp->dirent);
 	return ftp;
 }
 
@@ -60,8 +76,7 @@ void ftp_free(struct ftp *ftp)
 		ftp_close(ftp);
 	}
 
-	free_dir(ftp->dirent[0]);
-	free_dir(ftp->dirent[1]);
+	free_dir(ftp->dirent);
 }
 
 static void free_dir(struct ftp_dirent *dir)
@@ -139,15 +154,19 @@ int ftp_sockets(struct ftp *ftp, int *sockv, int maxsize)
 	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:
@@ -155,15 +174,15 @@ static void exec_op(struct ftp *ftp, int op, const char *arg)
 		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:
@@ -171,11 +190,15 @@ static void exec_op(struct ftp *ftp, int op, const char *arg)
 		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:
@@ -197,7 +220,7 @@ static void exec_queued(struct ftp *ftp)
 		ftp->qhead = ftp->qhead->next;
 	}
 
-	exec_op(ftp, fop->op, fop->arg);
+	exec_op(ftp, fop);
 
 	free(fop->arg);
 	free(fop);
@@ -209,7 +232,10 @@ int ftp_queue(struct ftp *ftp, int op, const char *arg)
 	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;
 	}
 
@@ -236,7 +262,36 @@ int ftp_queue(struct ftp *ftp, int op, const char *arg)
 	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;
@@ -280,7 +335,7 @@ int ftp_waitresp(struct ftp *ftp, time_t timeout)
 static int ftp_active(struct ftp *ftp)
 {
 	struct sockaddr_in sa = {0};
-	socklen_t len;
+	int len;
 	unsigned long addr;
 	unsigned short port;
 
@@ -330,6 +385,22 @@ static int ftp_active(struct ftp *ftp)
 	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) {
@@ -510,14 +581,18 @@ static void proc_control(struct ftp *ftp, const char *buf)
 		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;
@@ -528,6 +603,16 @@ int ftp_update(struct ftp *ftp)
 	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");
@@ -561,6 +646,26 @@ int ftp_delete(struct ftp *ftp, const char *fname)
 	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;
@@ -570,6 +675,10 @@ int ftp_list(struct ftp *ftp)
 {
 	struct recvbuf *rbuf;
 
+	if(prepare_data(ftp) == -1) {
+		return -1;
+	}
+
 	if(!(rbuf = malloc(sizeof *rbuf))) {
 		errmsg("failed to allocate receive buffer\n");
 		return -1;
@@ -599,6 +708,25 @@ int ftp_store(struct ftp *ftp, const char *fname)
 	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;
@@ -629,6 +757,63 @@ static int cproc_active(struct ftp *ftp, int code, const char *buf, void *cls)
 	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;
@@ -644,9 +829,9 @@ static int cproc_pwd(struct ftp *ftp, int code, const char *buf, void *cls)
 		return -1;
 	}
 
-	free(ftp->curdir[FTP_REMOTE]);
-	ftp->curdir[FTP_REMOTE] = strdup_nf(dirname);
-	ftp->modified = FTP_MOD_REMDIR;
+	free(ftp->curdir);
+	ftp->curdir = strdup_nf(dirname);
+	ftp->modified = FTP_MOD_DIR;
 	return 0;
 }
 
@@ -720,7 +905,7 @@ static int parse_dirent(struct ftp_dirent *ent, const char *line)
 	return 0;
 }
 
-static int direntcmp(const void *a, const void *b)
+int ftp_direntcmp(const void *a, const void *b)
 {
 	const struct ftp_dirent *da = a, *db = b;
 
@@ -741,23 +926,23 @@ static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls)
 		char *end = rbuf->buf + rbuf->size;
 		struct ftp_dirent ent;
 
-		darr_clear(ftp->dirent[FTP_REMOTE]);
+		darr_clear(ftp->dirent);
 
 		while(ptr < end) {
 			if(parse_dirent(&ent, ptr) != -1) {
-				darr_push(ftp->dirent[FTP_REMOTE], &ent);
+				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[FTP_REMOTE]);
-		qsort(ftp->dirent[FTP_REMOTE], num, sizeof *ftp->dirent[FTP_REMOTE], direntcmp);
+		num = darr_size(ftp->dirent);
+		qsort(ftp->dirent, num, sizeof *ftp->dirent, ftp_direntcmp);
 		return;
 	}
 
@@ -777,17 +962,75 @@ static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls)
 	rbuf->size += sz;
 }
 
-const char *ftp_curdir(struct ftp *ftp, int whichdir)
+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[whichdir];
+	return ftp->curdir;
 }
 
-int ftp_num_dirent(struct ftp *ftp, int whichdir)
+int ftp_num_dirent(struct ftp *ftp)
 {
-	return darr_size(ftp->dirent[whichdir]);
+	return darr_size(ftp->dirent);
 }
 
-struct ftp_dirent *ftp_dirent(struct ftp *ftp, int whichdir, int idx)
+struct ftp_dirent *ftp_dirent(struct ftp *ftp, int idx)
 {
-	return ftp->dirent[whichdir] + idx;
+	return ftp->dirent + idx;
 }