X-Git-Url: http://dolda2000.com/gitweb/?p=doldaconnect.git;a=blobdiff_plain;f=daemon%2Ftransfer.c;h=9c50ed102342e0b7c91739f5b4c4b5b8294f9c10;hp=0fea334ddb0c8feb7937d68c81a57f64b82d6b56;hb=1ce5968e27a19937a0e54f118d91e1a22438a0eb;hpb=5b193db06069c0d85b1f90f2df23a7091edc8999

diff --git a/daemon/transfer.c b/daemon/transfer.c
index 0fea334..9c50ed1 100644
--- a/daemon/transfer.c
+++ b/daemon/transfer.c
@@ -1,6 +1,6 @@
 /*
  *  Dolda Connect - Modular multiuser Direct Connect-style client
- *  Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com)
+ *  Copyright (C) 2004 Fredrik Tolf <fredrik@dolda2000.com>
  *  
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -26,6 +26,7 @@
 #include <grp.h>
 #include <errno.h>
 #include <sys/wait.h>
+#include <stdint.h>
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>
@@ -80,6 +81,8 @@ void freetransfer(struct transfer *transfer)
 	free(transfer->filterbuf);
     if(transfer->hash != NULL)
 	freehash(transfer->hash);
+    if(transfer->exitstatus != NULL)
+	free(transfer->exitstatus);
     if(transfer->localend != NULL)
     {
 	transfer->localend->readcb = NULL;
@@ -123,22 +126,72 @@ struct transfer *newtransfer(void)
     return(new);
 }
 
-void transferattach(struct transfer *transfer, struct transferiface *iface, void *data)
+static void localread(struct socket *sk, struct transfer *transfer)
 {
-    if(transfer->iface != NULL)
-	transferdetach(transfer);
-    transfer->iface = iface;
-    transfer->ifacedata = data;
+    void *buf;
+    size_t blen;
+    
+    if((transfer->datapipe != NULL) && (sockqueueleft(transfer->datapipe) > 0)) {
+	buf = sockgetinbuf(sk, &blen);
+	sockqueue(transfer->datapipe, buf, blen);
+    }
+}
+
+static void dataread(struct socket *sk, struct transfer *transfer)
+{
+    void *buf;
+    size_t blen;
+    
+    if((transfer->localend != NULL) && (sockqueueleft(transfer->localend) > 0)) {
+	buf = sockgetinbuf(sk, &blen);
+	sockqueue(transfer->localend, buf, blen);
+    }
+}
+
+static void localwrite(struct socket *sk, struct transfer *transfer)
+{
+    if(transfer->datapipe != NULL)
+	dataread(transfer->datapipe, transfer);
+}
+
+static void datawrite(struct socket *sk, struct transfer *transfer)
+{
+    if(transfer->localend != NULL)
+	localread(transfer->localend, transfer);
+}
+
+static void localerr(struct socket *sk, int errno, struct transfer *transfer)
+{
+    if(transfer->datapipe != NULL)
+	closesock(transfer->datapipe);
+}
+
+static void dataerr(struct socket *sk, int errno, struct transfer *transfer)
+{
+    if(transfer->localend != NULL)
+	closesock(transfer->localend);
+}
+
+void transferattach(struct transfer *transfer, struct socket *dpipe)
+{
+    transferdetach(transfer);
+    getsock(transfer->datapipe = dpipe);
+    dpipe->readcb = (void (*)(struct socket *, void *))dataread;
+    dpipe->writecb = (void (*)(struct socket *, void *))datawrite;
+    dpipe->errcb = (void (*)(struct socket *, int, void *))dataerr;
+    dpipe->data = transfer;
 }
 
 void transferdetach(struct transfer *transfer)
 {
-    if(transfer->iface != NULL)
-    {
-	transfer->iface->detach(transfer, transfer->ifacedata);
-	transfer->iface = NULL;
-	transfer->ifacedata = NULL;
+    if(transfer->datapipe != NULL) {
+	transfer->datapipe->readcb = NULL;
+	transfer->datapipe->writecb = NULL;
+	transfer->datapipe->errcb = NULL;
+	closesock(transfer->datapipe);
+	putsock(transfer->datapipe);
     }
+    transfer->datapipe = NULL;
 }
 
 struct transfer *finddownload(wchar_t *peerid)
@@ -147,13 +200,25 @@ struct transfer *finddownload(wchar_t *peerid)
 
     for(transfer = transfers; transfer != NULL; transfer = transfer->next)
     {
-	if((transfer->dir == TRNSD_DOWN) && (transfer->iface == NULL) && !wcscmp(peerid, transfer->peerid))
+	if((transfer->dir == TRNSD_DOWN) && (transfer->datapipe == NULL) && !wcscmp(peerid, transfer->peerid))
+	    break;
+    }
+    return(transfer);
+}
+
+struct transfer *hasupload(struct fnet *fnet, wchar_t *peerid)
+{
+    struct transfer *transfer;
+    
+    for(transfer = transfers; transfer != NULL; transfer = transfer->next)
+    {
+	if((transfer->dir == TRNSD_UP) && (transfer->fnet == fnet) && !wcscmp(transfer->peerid, peerid))
 	    break;
     }
     return(transfer);
 }
 
-struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nickid, struct transferiface *iface, void *data)
+struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nickid, struct socket *dpipe)
 {
     struct transfer *transfer;
     
@@ -167,7 +232,7 @@ struct transfer *newupload(struct fnetnode *fn, struct fnet *fnet, wchar_t *nick
     transfer->dir = TRNSD_UP;
     if(fn != NULL)
 	getfnetnode(transfer->fn = fn);
-    transferattach(transfer, iface, data);
+    transferattach(transfer, dpipe);
     linktransfer(transfer);
     bumptransfer(transfer);
     return(transfer);
@@ -187,8 +252,7 @@ void resettransfer(struct transfer *transfer)
 {
     if(transfer->dir == TRNSD_DOWN)
     {
-	if(transfer->iface != NULL)
-	    transferdetach(transfer);
+	transferdetach(transfer);
 	killfilter(transfer);
 	transfersetstate(transfer, TRNS_WAITING);
 	transfersetactivity(transfer, L"reset");
@@ -217,27 +281,7 @@ static void transexpire(int cancelled, struct transfer *transfer)
 	transfer->timeout = 0;
 }
 
-static void transferread(struct socket *sk, struct transfer *transfer)
-{
-    if(sockgetdatalen(sk) >= 65536)
-	sk->ignread = 1;
-    if((transfer->iface != NULL) && (transfer->iface->gotdata != NULL))
-	transfer->iface->gotdata(transfer, transfer->ifacedata);
-}
-
-static void transferwrite(struct socket *sk, struct transfer *transfer)
-{
-    if((transfer->iface != NULL) && (transfer->iface->wantdata != NULL))
-	transfer->iface->wantdata(transfer, transfer->ifacedata);
-}
-
-static void transfererr(struct socket *sk, int errno, struct transfer *transfer)
-{
-    if((transfer->iface != NULL) && (transfer->iface->endofdata != NULL))
-	transfer->iface->endofdata(transfer, transfer->ifacedata);
-}
-
-void transferputdata(struct transfer *transfer, void *buf, size_t size)
+static void transferputdata(struct transfer *transfer, void *buf, size_t size)
 {
     time(&transfer->activity);
     sockqueue(transfer->localend, buf, size);
@@ -246,7 +290,7 @@ void transferputdata(struct transfer *transfer, void *buf, size_t size)
     CBCHAINDOCB(transfer, trans_p, transfer);
 }
 
-void transferendofdata(struct transfer *transfer)
+static void transferendofdata(struct transfer *transfer)
 {
     if(transfer->curpos >= transfer->size)
     {
@@ -261,25 +305,28 @@ void transferendofdata(struct transfer *transfer)
     }
 }
 
-size_t transferdatasize(struct transfer *transfer)
+static ssize_t transferdatasize(struct transfer *transfer)
 {
-    return(sockqueuesize(transfer->localend));
+    return(sockqueueleft(transfer->localend));
 }
 
-void *transfergetdata(struct transfer *transfer, size_t *size)
+static void *transfergetdata(struct transfer *transfer, size_t *size)
 {
     void *buf;
     
     if(transfer->localend == NULL)
 	return(NULL);
-    transfer->localend->ignread = 0;
     time(&transfer->activity);
     if((buf = sockgetinbuf(transfer->localend, size)) == NULL)
 	return(NULL);
     if((transfer->endpos >= 0) && (transfer->curpos + *size >= transfer->endpos))
     {
-	*size = transfer->endpos - transfer->curpos;
-	buf = srealloc(buf, *size);
+	if((*size = transfer->endpos - transfer->curpos) == 0) {
+	    free(buf);
+	    buf = NULL;
+	} else {
+	    buf = srealloc(buf, *size);
+	}
     }
     transfer->curpos += *size;
     bytesupload += *size;
@@ -287,12 +334,11 @@ void *transfergetdata(struct transfer *transfer, size_t *size)
     return(buf);
 }
 
-void transferprepul(struct transfer *transfer, size_t size, size_t start, size_t end, struct socket *lesk)
+void transferprepul(struct transfer *transfer, off_t size, off_t start, off_t end, struct socket *lesk)
 {
     transfersetsize(transfer, size);
     transfer->curpos = start;
     transfer->endpos = end;
-    lesk->ignread = 1;
     transfersetlocalend(transfer, lesk);
 }
 
@@ -307,7 +353,7 @@ void transferstartul(struct transfer *transfer, struct socket *sk)
     transfersetstate(transfer, TRNS_MAIN);
     socksettos(sk, confgetint("transfer", "ultos"));
     if(transfer->localend != NULL)
-	transfer->localend->ignread = 0;
+	localread(transfer->localend, transfer);
 }
 
 void transfersetlocalend(struct transfer *transfer, struct socket *sk)
@@ -316,9 +362,9 @@ void transfersetlocalend(struct transfer *transfer, struct socket *sk)
 	putsock(transfer->localend);
     getsock(transfer->localend = sk);
     sk->data = transfer;
-    sk->readcb = (void (*)(struct socket *, void *))transferread;
-    sk->writecb = (void (*)(struct socket *, void *))transferwrite;
-    sk->errcb = (void (*)(struct socket *, int, void *))transfererr;
+    sk->readcb = (void (*)(struct socket *, void *))localread;
+    sk->writecb = (void (*)(struct socket *, void *))localwrite;
+    sk->errcb = (void (*)(struct socket *, int, void *))localerr;
 }
 
 static int tryreq(struct transfer *transfer)
@@ -443,7 +489,7 @@ void transfersetnick(struct transfer *transfer, wchar_t *newnick)
     CBCHAINDOCB(transfer, trans_ac, transfer, L"nick");
 }
 
-void transfersetsize(struct transfer *transfer, int newsize)
+void transfersetsize(struct transfer *transfer, off_t newsize)
 {
     transfer->size = newsize;
     CBCHAINDOCB(transfer, trans_ac, transfer, L"size");
@@ -514,56 +560,15 @@ static void killfilter(struct transfer *transfer)
     transfer->filterbufsize = transfer->filterbufdata = 0;
 }
 
-static char *findfilter(struct passwd *pwd)
+static void handletranscmd(struct transfer *transfer, wchar_t *cmd, wchar_t *arg)
 {
-    char *path, *filtername;
-
-    if((path = sprintf2("%s/.dcdl-filter", pwd->pw_dir)) != NULL)
-    {
-	if(!access(path, X_OK))
-	    return(path);
-	free(path);
+    if(!wcscmp(cmd, L"status")) {
+	if(arg == NULL)
+	    arg = L"";
+	if(transfer->exitstatus != NULL)
+	    free(transfer->exitstatus);
+	transfer->exitstatus = swcsdup(arg);
     }
-    if((filtername = icwcstombs(confgetstr("transfer", "filter"), NULL)) == NULL)
-    {
-	flog(LOG_WARNING, "could not convert filter name into local charset: %s", strerror(errno));
-    } else {
-	if(strchr(filtername, '/') == NULL)
-	{
-	    if((path = sprintf2("/etc/%s", filtername)) != NULL)
-	    {
-		if(!access(path, X_OK))
-		{
-		    free(filtername);
-		    return(path);
-		}
-		free(path);
-	    }
-	    if((path = sprintf2("/usr/etc/%s", filtername)) != NULL)
-	    {
-		if(!access(path, X_OK))
-		{
-		    free(filtername);
-		    return(path);
-		}
-		free(path);
-	    }
-	    if((path = sprintf2("/usr/local/etc/%s", filtername)) != NULL)
-	    {
-		if(!access(path, X_OK))
-		{
-		    free(filtername);
-		    return(path);
-		}
-		free(path);
-	    }
-	} else {
-	    if(!access(filtername, X_OK))
-		return(filtername);
-	}
-	free(filtername);
-    }
-    return(NULL);
 }
 
 static void filterread(struct socket *sk, struct transfer *transfer)
@@ -587,8 +592,9 @@ static void filterread(struct socket *sk, struct transfer *transfer)
 	    if(p2 != NULL)
 	    {
 		if((arg = icmbstowcs(p2, NULL)) == NULL)
-		    flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", transfer->filterbuf, strerror(errno));
+		    flog(LOG_WARNING, "filter sent a string which could not be converted into the local charset: %s: %s", p2, strerror(errno));
 	    }
+	    handletranscmd(transfer, cmd, arg);
 	    CBCHAINDOCB(transfer, trans_filterout, transfer, cmd, arg);
 	    if(arg != NULL)
 		free(arg);
@@ -603,6 +609,8 @@ static void filterread(struct socket *sk, struct transfer *transfer)
 static void filterexit(pid_t pid, int status, void *data)
 {
     struct transfer *transfer;
+    struct fnet *fnet;
+    wchar_t *peerid;
     
     for(transfer = transfers; transfer != NULL; transfer = transfer->next)
     {
@@ -610,13 +618,14 @@ static void filterexit(pid_t pid, int status, void *data)
 	{
 	    transfer->filter = -1;
 	    killfilter(transfer);
+	    fnet = transfer->fnet;
+	    peerid = swcsdup(transfer->peerid);
 	    if(WEXITSTATUS(status))
-	    {
 		resettransfer(transfer);
-	    } else {
+	    else
 		freetransfer(transfer);
-	    }
-	    trytransferbypeer(transfer->fnet, transfer->peerid);
+	    trytransferbypeer(fnet, peerid);
+	    free(peerid);
 	    break;
 	}
     }
@@ -624,7 +633,7 @@ static void filterexit(pid_t pid, int status, void *data)
 
 int forkfilter(struct transfer *transfer)
 {
-    char *filtername, *filename, *peerid, *buf;
+    char *filtername, *filename, *peerid, *buf, *p;
     wchar_t *wfilename;
     struct passwd *pwent;
     pid_t pid;
@@ -635,9 +644,7 @@ int forkfilter(struct transfer *transfer)
     struct wcspair *ta;
     char *rec, *val;
 
-    wfilename = transfer->path;
-    if(transfer->fnet->filebasename != NULL)
-	wfilename = transfer->fnet->filebasename(wfilename);
+    wfilename = fnfilebasename(transfer->path);
     if(transfer->auth == NULL)
     {
 	flog(LOG_WARNING, "tried to fork filter for transfer with NULL authhandle (tranfer %i)", transfer->id);
@@ -650,7 +657,10 @@ int forkfilter(struct transfer *transfer)
 	errno = EACCES;
 	return(-1);
     }
-    if((filtername = findfilter(pwent)) == NULL)
+    filtername = findfile("dc-filter", pwent->pw_dir, 0);
+    if(filtername == NULL)
+	filtername = findfile(icswcstombs(confgetstr("transfer", "filter"), NULL, NULL), NULL, 0);
+    if(filtername == NULL)
     {
 	flog(LOG_WARNING, "could not find filter for user %s", pwent->pw_name);
 	errno = ENOENT;
@@ -677,6 +687,12 @@ int forkfilter(struct transfer *transfer)
 	peerid = sprintf2("utf8-%s", buf);
 	free(buf);
     }
+    for(p = filename; *p; p++) {
+	if(*p == '/')
+	    *p = '_';
+	else if((p == filename) && (*p == '.'))
+	    *p = '_';
+    }
     if((pid = forksess(transfer->owner, transfer->auth, filterexit, NULL, FD_PIPE, 0, O_WRONLY, &inpipe, FD_PIPE, 1, O_RDONLY, &outpipe, FD_FILE, 2, O_RDWR, "/dev/null", FD_END)) < 0)
     {
 	flog(LOG_WARNING, "could not fork session for filter for transfer %i: %s", transfer->id, strerror(errno));
@@ -686,7 +702,7 @@ int forkfilter(struct transfer *transfer)
     {
 	argv = NULL;
 	argvsize = argvdata = 0;
-	buf = sprintf2("%i", transfer->size);
+	buf = sprintf2("%ji", (intmax_t)transfer->size);
 	addtobuf(argv, filtername);
 	addtobuf(argv, filename);
 	addtobuf(argv, buf);
@@ -727,7 +743,7 @@ int forkfilter(struct transfer *transfer)
      * the fd, and thus it closes it. Until I can find out whyever the
      * kernel gives a POLLIN on the fd (if I can at all...), I'll just
      * set ignread on insock for now. */
-    insock->ignread = 1;
+/*     sockblock(insock, 1); */
     transfer->filter = pid;
     transfersetlocalend(transfer, insock);
     getsock(transfer->filterout = outsock);
@@ -745,6 +761,7 @@ static int run(void)
 {
     struct transfer *transfer, *next;
     
+    /*
     for(transfer = transfers; transfer != NULL; transfer = transfer->next)
     {
 	if((transfer->endpos >= 0) && (transfer->state == TRNS_MAIN) && (transfer->localend != NULL) && (transfer->localend->state == SOCK_EST) && (transfer->curpos >= transfer->endpos))
@@ -754,6 +771,7 @@ static int run(void)
 	    closesock(transfer->localend);
 	}
     }
+    */
     for(transfer = transfers; transfer != NULL; transfer = next)
     {
 	next = transfer->next;
@@ -769,10 +787,23 @@ static int run(void)
 
 static struct configvar myvars[] =
 {
+    /** The maximum number of simultaneously permitted uploads. A
+     * common hub rule is that you will need at least as many slots as
+     * the number of hubs to which you are connected. */
     {CONF_VAR_INT, "slots", {.num = 3}},
+    /** The TOS value to use for upload connections (see the TOS
+     * VALUES section). */
     {CONF_VAR_INT, "ultos", {.num = SOCK_TOS_MAXTP}},
+    /** The TOS value to use for download connections (see the TOS
+     * VALUES section). */
     {CONF_VAR_INT, "dltos", {.num = SOCK_TOS_MAXTP}},
+    /** The name of the filter script (see the FILES section for
+     * lookup information). */
     {CONF_VAR_STRING, "filter", {.str = L"dc-filter"}},
+    /** If true, only one upload is allowed per remote peer. This
+     * option is still experimental, so it is recommended to leave it
+     * off. */
+    {CONF_VAR_BOOL, "ulquota", {.num = 0}},
     {CONF_VAR_END}
 };