retrieve

[oftp] / src / ftp.c

diff --git a/src/ftp.c b/src/ftp.c
index cf76a6b..f62a3a4 100644 (file)
--- a/src/ftp.c
+++ b/src/ftp.c
@@ -50,6 +50,9 @@ 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)
 {
@@ -151,15 +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:
@@ -167,15 +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:
@@ -183,11 +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:
@@ -209,7 +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);
@@ -221,7 +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;
        }
 
@@ -248,6 +262,35 @@ int ftp_queue(struct ftp *ftp, int op, const char *arg)
        return 0;
 }
 
+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;
@@ -538,11 +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)
 {
+       ftp_queue(ftp, FTP_TYPE, "I");
        ftp_queue(ftp, FTP_PWD, 0);
        ftp_queue(ftp, FTP_LIST, 0);
        return 0;
@@ -553,6 +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");
@@ -615,7 +675,7 @@ int ftp_list(struct ftp *ftp)
 {
        struct recvbuf *rbuf;
 
-       if(prepare_data(ftp)) {
+       if(prepare_data(ftp) == -1) {
                return -1;
        }
 
@@ -648,6 +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;
@@ -883,6 +962,64 @@ static void dproc_list(struct ftp *ftp, const char *buf, int sz, void *cls)
        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;