www.pudn.com > socks5.zip > dirsend.c
/* Copyright (c) 1989, 1990, 1991 by the University of Washington */ /* */ /* For copying and distribution information, please see the file */ /*. */ /* If you're going to hack on this, I'd suggest using unifdef with -UCUTCP */ /* for your working copy. When you've got your changes done, come back and */ /* add them into this main file. It's getting pretty nasty down there. */ #include "pmachine.h" /* THIS does FD_SET etc on AT&T 3b2s. */ #ifdef u3b2 # include #endif /* Interactive UNIX keeps some of the socket definitions in funny places. */ #ifdef ISC # include #endif /* ISC */ #include "pfs.h" #include "pprot.h" #include "pcompat.h" #include "perrno.h" static int notprived = 0; extern int errno; extern int perrno; extern int rdgram_priority; #ifdef DEBUG extern int pfs_debug; #endif extern int pfs_disable_flag; extern int verbose; char *nlsindex(); #define max(X, Y) ((X) > (Y) ? (X) : (Y)) static int dir_udp_port = 0; /* Remote UDP port number */ static unsigned short next_conn_id = 0; static int client_dirsrv_timeout = CLIENT_DIRSRV_TIMEOUT; static int client_dirsrv_retry = CLIENT_DIRSRV_RETRY; /* These were parameters to dirsend() */ static PTEXT pkt; static char *hostname; static struct sockaddr_in *hostaddr; /* These were locals in dirsend(). Note that the initializations here * are really meaningless since we have to redo them for each call to * dirsend() since they were formerly automatically initialized. */ static PTEXT first = NULL; /* First returned packet */ static PTEXT next; /* The one we are waiting for */ static PTEXT vtmp; /* For reorganizing linked list */ static PTEXT comp_thru; /* We have all packets though */ static int lp = -1; /* Opened UDP port */ static int hdr_len; /* Header Length */ static int nd_pkts; /* Number of packets we want */ static int no_pkts; /* Number of packets we have */ static int pkt_cid; /* Packet connection identifier */ static unsigned short this_conn_id; /* Connection ID we are using */ static unsigned short recvd_thru; /* Received through */ static short priority; /* Priority for request */ static short one = 0; /* Pointer to value 1 */ static short zero = 0; /* Pointer to value 0 */ static char *seqtxt; /* Pointer to text w/ sequence # */ static struct sockaddr_in us; /* Our address */ static struct sockaddr_in to; /* Address to send query */ static struct sockaddr_in from; /* Reply received from */ static int from_sz; /* Size of from structure */ static struct hostent *host; /* Host info from gethostbyname */ static long newhostaddr; /* New host address from *host */ static int req_udp_port=0; /* Requested port (optional) */ static char *openparen; /* Delimits port in name */ static char hostnoport[500];/* Host name without port */ static int ns; /* Number of bytes actually sent */ static int nr; /* Number of bytes received */ static SELECTARG readfds; /* Used for select */ static int tmp; static char *ctlptr; /* Pointer to control field */ static short stmp; /* Temp short for conversions */ static int backoff; /* Server requested backoff */ static unsigned char rdflag11; /* First byte of flags (bit vect)*/ static unsigned char rdflag12; /* Second byte of flags (int) */ static int scpflag = 0; /* Set if any sequencd cont pkts */ static int ackpend = 0; /* Acknowledgement pending */ static int gaps = 0; /* Gaps present in recvd pkts */ static struct timeval timeout; /* Time to wait for response */ static struct timeval ackwait; /* Time to wait before acking */ static struct timeval gapwait; /* Time to wait b4 filling gaps */ static struct timeval *selwait; /* Time to wait for select */ static int retries; /* was = client_dirsrv_retry */ char to_hostname[512]; /* lmjm: saves inet_ntoa() str */ /* These are added so dirsend() "blocks" properly */ static PTEXT dirsendReturn; static int dirsendDone; /* And here are the values for dirsendDone */ #define DSRET_DONE 1 #define DSRET_SEND_ERROR -1 #define DSRET_RECV_ERROR -2 #define DSRET_SELECT_ERROR -3 #define DSRET_TIMEOUT -4 #define DSRET_ABORTED -5 /* New procedures to break up dirsend() */ static int initDirsend(); static void retryDirsend(), keepWaitingDirsend(); static void timeoutProc(); static void readProc(); /* Wrappers around X calls to allow non-X usage */ static void processEvent(); /* Extra stuff for the asynchronous X version of dirsend() */ typedef char *XtPointer; typedef char *XtInputId; typedef char *XtIntervalId; static XtInputId inputId; static XtIntervalId timerId = (XtIntervalId)0; /* * dirsend - send packet and receive response * * DIRSEND takes a pointer to a structure of type PTEXT, a hostname, * and a pointer to a host address. It then sends the supplied * packet off to the directory server on the specified host. If * hostaddr points to a valid address, that address is used. Otherwise, * the hostname is looked up to obtain the address. If hostaddr is a * non-null pointer to a 0 address, then the address will be replaced * with that found in the hostname lookup. * * DIRSEND will wait for a response and retry an appropriate * number of times as defined by timeout and retries (both static * variables). It will collect however many packets form the reply, and * return them in a structure (or structures) of type PTEXT. * * DIRSEND will free the packet that it is presented as an argument. * The packet is freed even if dirsend fails. */ PTEXT dirsend(pkt_p,hostname_p,hostaddr_p) PTEXT pkt_p; char *hostname_p; struct sockaddr_in *hostaddr_p; { /* copy parameters to globals since other routines use them */ pkt = pkt_p; hostname = hostname_p; hostaddr = hostaddr_p; /* Do the initializations of formerly auto variables */ first = NULL; lp = -1; one = 0; zero = 0; req_udp_port=0; scpflag = 0; ackpend = 0; gaps = 0; retries = client_dirsrv_retry; if (initDirsend() < 0) return(NULL); /* set the first timeout */ retryDirsend(); dirsendReturn = NULL; dirsendDone = 0; /* Until one of the callbacks says to return, keep processing events */ while (!dirsendDone) processEvent(); /* Return whatever we're supposed to */ return(dirsendReturn); } /* - - - - - - - - */ /* This function does all the initialization that used to be done at the * start of dirsend(), including opening the socket descriptor "lp". It * returns the descriptor if successful, otherwise -1 to indicate that * dirsend() should return NULL immediately. */ static int initDirsend() { if(one == 0) one = htons((short) 1); priority = htons(rdgram_priority); timeout.tv_sec = client_dirsrv_timeout; timeout.tv_usec = 0; ackwait.tv_sec = 0; ackwait.tv_usec = 500000; gapwait.tv_sec = (client_dirsrv_timeout < 5 ? client_dirsrv_timeout : 5); gapwait.tv_usec = 0; comp_thru = NULL; perrno = 0; nd_pkts = 0; no_pkts = 0; pkt_cid = 0; /* Find first connection ID */ if(next_conn_id == 0) { srand(getpid()+time(0)); /* XXX: arg ok, but not right type. */ next_conn_id = rand(); } /* If necessary, find out what udp port to send to */ if (dir_udp_port == 0) { register struct servent *sp; tmp = pfs_enable; pfs_enable = PMAP_DISABLE; #ifdef USE_ASSIGNED_PORT /* UCX needs 0 & -1 */ sp = getservbyname("prospero","udp"); if (sp == (struct servent *)0 || sp == (struct servent *)-1) { #ifdef DEBUG if (pfs_debug) fprintf(stderr, "dirsrv: udp/prospero unknown service - using %d\n", PROSPERO_PORT); #endif dir_udp_port = htons((u_short) PROSPERO_PORT); } #else /* UCX needs 0 & -1 */ sp = getservbyname("dirsrv","udp"); if (sp == (struct servent *)0 || sp == (struct servent *)-1) { #ifdef DEBUG if (pfs_debug) fprintf(stderr, "dirsrv: udp/dirsrv unknown service - using %d\n", DIRSRV_PORT); #endif dir_udp_port = htons((u_short) DIRSRV_PORT); } #endif else dir_udp_port = sp->s_port; pfs_enable = tmp; #ifdef DEBUG if (pfs_debug > 3) fprintf(stderr,"dir_udp_port is %d\n", ntohs(dir_udp_port)); #endif } /* If we were given the host address, then use it. Otherwise */ /* lookup the hostname. If we were passed a host address of */ /* 0, we must lookup the host name, then replace the old value */ if(!hostaddr || (hostaddr->sin_addr.s_addr == 0)) { /* I we have a null host name, return an error */ if((hostname == NULL) || (*hostname == '\0')) { #ifdef DEBUG if (pfs_debug) fprintf(stderr, "dirsrv: Null hostname specified\n"); #endif perrno = DIRSEND_BAD_HOSTNAME; ptlfree(pkt); /* return(NULL); */ return(-1); } /* If a port is included, save it away */ if((openparen = index(hostname,'('))) { sscanf(openparen+1,"%d",&req_udp_port); strncpy(hostnoport,hostname,400); if((openparen - hostname) < 400) { *(hostnoport + (openparen - hostname)) = '\0'; hostname = hostnoport; } } tmp = pfs_enable; pfs_enable = PMAP_DISABLE; if((host = gethostbyname(hostname)) == NULL) { pfs_enable = tmp; /* Check if a numeric address */ newhostaddr = inet_addr(hostname); if(newhostaddr == -1) { #ifdef DEBUG if (pfs_debug) fprintf(stderr, "dirsrv: Can't resolve host %s\n",hostname); #endif perrno = DIRSEND_BAD_HOSTNAME; ptlfree(pkt); /* return(NULL); */ return(-1); } bzero((char *)&to, S_AD_SZ); to.sin_family = AF_INET; bcopy((char *)&newhostaddr, (char *)&to.sin_addr, 4); if(hostaddr) bcopy((char *)&to, (char *)hostaddr, S_AD_SZ); } else { pfs_enable = tmp; bzero((char *)&to, S_AD_SZ); to.sin_family = host->h_addrtype; bcopy((char *)host->h_addr, (char *)&to.sin_addr, host->h_length); if(hostaddr) bcopy((char *)&to, (char *)hostaddr, S_AD_SZ); } } else bcopy((char *)hostaddr, (char *)&to, S_AD_SZ); /* lmjm: Save away the hostname */ strncpy(to_hostname, inet_ntoa(to.sin_addr), sizeof(to_hostname)-1); if(req_udp_port) to.sin_port = htons(req_udp_port); else to.sin_port = dir_udp_port; /* If a port was specified in hostaddr, use it, otherwise fill it in */ if(hostaddr) { if(hostaddr->sin_port) to.sin_port = hostaddr->sin_port; else hostaddr->sin_port = to.sin_port; } /* Must open a new port each time. we do not want to see old */ /* responses to messages we are done with */ if ((lp = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { #ifdef DEBUG if (pfs_debug) fprintf(stderr,"dirsrv: Can't open socket\n"); #endif perrno = DIRSEND_UDP_CANT; ptlfree(pkt); /* return(NULL); */ return(-1); } /* Try to bind it to a privileged port - loop through candidate */ /* ports trying to bind. If failed, that's OK, we will let the */ /* system assign a non-privileged port later */ if(!notprived) { for(tmp = PROS_FIRST_PRIVP; tmp < PROS_FIRST_PRIVP+PROS_NUM_PRIVP; tmp++) { bzero((char *)&us, sizeof(us)); us.sin_family = AF_INET; us.sin_port = htons((u_short) tmp); if (bind(lp, (struct sockaddr *)&us, sizeof(us))) { if(errno != EADDRINUSE) { notprived++; break; } } else break; } } #ifndef USE_V3_PROT /* Add header */ if(rdgram_priority) { pkt->start -= 15; pkt->length += 15; *(pkt->start) = (char) 15; bzero(pkt->start+9,4); *(pkt->start+11) = 0x02; bcopy((char *)&priority, pkt->start+13,2); } else { pkt->start -= 9; pkt->length += 9; *(pkt->start) = (char) 9; } this_conn_id = htons(next_conn_id++); if(next_conn_id == 0) next_conn_id++; bcopy((char *)&this_conn_id, pkt->start+1,2); bcopy((char *)&one,pkt->start+3,2); bcopy((char *)&one,pkt->start+5,2); bzero(pkt->start+7,2); #endif #ifdef DEBUG if (pfs_debug > 2) { #ifndef USE_V3_PROT if (to.sin_family == AF_INET) { if(req_udp_port) fprintf(stderr,"Sending message to %s+%d(%d)...", to_hostname, req_udp_port, ntohs(this_conn_id)); else fprintf(stderr,"Sending message to %s(%d)...", to_hostname, ntohs(this_conn_id)); } #else if (to.sin_family == AF_INET) fprintf(stderr,"Sending message to %s...", to_hostname); #endif /* USE_V3_PROT */ else fprintf(stderr,"Sending message..."); (void) fflush(stderr); } #endif /* DEBUG */ first = ptalloc(); next = first; return(lp); } /* - - - - - - - - */ /* * This used to be a label to goto to retry the last packet. Now we resend * the packet and call keepWaitingDirsend() to wait for a reply. (We * call keepWaitingDirsend() because formerly the code dropped through * the keep_waiting label.) */ static void retryDirsend() { gaps = ackpend = 0; ns = sendto(lp,(char *)(pkt->start), pkt->length, 0, (struct sockaddr *)&to, S_AD_SZ); if(ns != pkt->length) { #ifdef DEBUG if (pfs_debug) { fprintf(stderr,"\nsent only %d/%d: ",ns, pkt->length); perror(""); } #endif close(lp); perrno = DIRSEND_NOT_ALL_SENT; ptlfree(first); ptlfree(pkt); /* pkt= NULL; */ /* added by NEC NWSL */ /* return(NULL); */ dirsendReturn = NULL; dirsendDone = DSRET_SEND_ERROR; } #ifdef DEBUG if (pfs_debug > 2) fprintf(stderr,"Sent.\n"); #endif keepWaitingDirsend(); } /* - - - - - - - - */ /* * This used to be a label to goto to set the appropriate timeout value * and blocked in select(). Now we set selwait and the SELECTARGs to the * appropriate values, and in X register a new timeout, then return to * allow event processing. */ static void keepWaitingDirsend() { /* We come back to this point (by a goto) if the packet */ /* received is only part of the response, or if the */ /* response came from the wrong host */ #ifdef DEBUG if (pfs_debug > 2) fprintf(stderr,"Waiting for reply..."); #endif FD_ZERO(&readfds); FD_SET(lp, &readfds); if(ackpend) selwait = &ackwait; else if(gaps) selwait = &gapwait; else selwait = &timeout; } /* - - - - - - - - */ /* * This routine is called when a timeout occurs. It includes the code that * was formerly used when select() returned 0 (indicating a timeout). */ /*ARGSUSED*/ static void timeoutProc(client_data,id) XtPointer client_data; XtIntervalId *id; { if (gaps || ackpend) { /* Send acknowledgment */ /* Acks are piggybacked on retries - If we have received */ /* an ack from the server, then the packet sent is only */ /* an ack and the rest of the message will be empty */ #ifdef DEBUG if (pfs_debug > 2) { fprintf(stderr,"Acknowledging (%s).\n", (ackpend ? "requested" : "gaps")); } #endif if (gaps && verbose) fprintf (stderr, "Searching...\n"); retryDirsend(); return; } if (retries-- > 0) { timeout.tv_sec = CLIENT_DIRSRV_BACKOFF(timeout.tv_sec); #ifdef DEBUG if (pfs_debug > 2) { fprintf(stderr,"Timed out. Setting timeout to %d seconds.\n", (int)timeout.tv_sec); } #endif retryDirsend(); return; } #ifdef DEBUG if (pfs_debug) { fprintf(stderr, "select failed(timeoutProc): readfds=%x ", *(int *)&readfds); perror(""); } #endif close(lp); perrno = DIRSEND_SELECT_FAILED; ptlfree(first); ptlfree(pkt); /* return(NULL); */ dirsendReturn = NULL; dirsendDone = DSRET_TIMEOUT; } /* - - - - - - - - */ /* * This function is called whenever there's something to read on the * connection. It includes the code that was run when select() returned * greater than 0 (indicating read ready). */ /*ARGSUSED*/ static void readProc(client_data,source,id) XtPointer client_data; int *source; XtInputId *id; { from_sz = sizeof(from); next->start = next->dat; if ((nr = recvfrom(lp, next->start, sizeof(next->dat), 0, (struct sockaddr *)&from, &from_sz)) < 0) { #ifdef DEBUG if (pfs_debug) perror("recvfrom"); #endif close(lp); perrno = DIRSEND_BAD_RECV; ptlfree(first); ptlfree(pkt); /* return(NULL) */ dirsendReturn = NULL; dirsendDone = DSRET_RECV_ERROR; return; } next->length = nr; next->start[next->length] = 0; #ifdef DEBUG if (pfs_debug > 2) fprintf(stderr,"Received packet from %s\n", inet_ntoa(from.sin_addr)); #endif /* For the current format, if the first byte is less than */ /* 20, then the first two bits are a version number and the next six */ /* are the header length (including the first byte). */ if((hdr_len = (unsigned char) *(next->start)) < 20) { ctlptr = next->start + 1; next->seq = 0; if(hdr_len >= 3) { /* Connection ID */ bcopy(ctlptr, (char *)&stmp,2); if(stmp) pkt_cid = ntohs(stmp); ctlptr += 2; } if (pkt_cid<0) pkt_cid = 65536+pkt_cid; if(pkt_cid && this_conn_id && (pkt_cid != ntohs(this_conn_id))) { /* The packet is not for us */ /* goto keep_waiting; */ #ifdef DEBUG if (pfs_debug > 20) fprintf(stderr,"Packet not for us %d,%d,%d\n", pkt_cid,this_conn_id,ntohs(this_conn_id)); #endif keepWaitingDirsend(); return; } if(hdr_len >= 5) { /* Packet number */ bcopy(ctlptr, (char *)&stmp,2); next->seq = ntohs(stmp); ctlptr += 2; } else { /* No packet number specified, so this is the only one */ next->seq = 1; nd_pkts = 1; } if(hdr_len >= 7) { /* Total number of packets */ bcopy(ctlptr, (char *)&stmp,2); /* 0 means don't know */ if(stmp) nd_pkts = ntohs(stmp); ctlptr += 2; } if(hdr_len >= 9) { /* Receievd through */ bcopy(ctlptr, (char *)&stmp,2); /* 1 means received request */ #ifndef USE_V3_PROT if((stmp) && (ntohs(stmp) == 1)) { /* Future retries will be acks only */ pkt->length = 9; bcopy((char *)&zero, pkt->start+3,2); #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Server acked request - retries will be acks only\n"); #endif } #endif ctlptr += 2; } if(hdr_len >= 11) { /* Backoff */ bcopy(ctlptr, (char *)&stmp,2); if(stmp) { backoff = (short) ntohs(stmp); #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Backing off to %d seconds\n", backoff); #endif timeout.tv_sec = backoff; if ((backoff > 60) && (first == next) && (no_pkts == 0)) { /* Probably a long queue on the server - don't give up */ retries = client_dirsrv_retry; } } ctlptr += 2; } if(hdr_len >= 12) { /* Flags (1st byte) */ bcopy(ctlptr, (char *)&rdflag11,1); if(rdflag11 & 0x80) { #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Ack requested\n"); #endif ackpend++; } if(rdflag11 & 0x40) { #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Sequenced control packet\n"); #endif next->length = -1; scpflag++; } ctlptr += 1; } if(hdr_len >= 13) { /* Flags (2nd byte) */ /* Reserved for future use */ bcopy(ctlptr, (char *)&rdflag12,1); ctlptr += 1; } if(next->seq == 0) { /* goto keep_waiting; */ keepWaitingDirsend(); return; } if(next->length >= 0) next->length -= hdr_len; next->start += hdr_len; goto done_old; } pkt_cid = 0; /* if intermediate format (between old and new), then process */ /* and go to done_old */ ctlptr = next->start + max(0,next->length-20); while(*ctlptr) ctlptr++; /* Control fields start after the terminating null */ ctlptr++; /* Until old version are gone, must be 4 extra bytes minimum */ /* When no version 3 servers, can remove the -4 */ if(ctlptr < (next->start + next->length - 4)) { /* Connection ID */ bcopy(ctlptr, (char *)&stmp,2); if(stmp) pkt_cid = ntohs(stmp); ctlptr += 2; if(pkt_cid && this_conn_id && (pkt_cid != ntohs(this_conn_id))) { /* The packet is not for us */ /* goto keep_waiting; */ keepWaitingDirsend(); return; } /* Packet number */ if(ctlptr < (next->start + next->length)) { bcopy(ctlptr, (char *)&stmp,2); next->seq = ntohs(stmp); ctlptr += 2; } /* Total number of packets */ if(ctlptr < (next->start + next->length)) { bcopy(ctlptr, (char *)&stmp,2); if(stmp) nd_pkts = ntohs(stmp); ctlptr += 2; } /* Receievd through */ if(ctlptr < (next->start + next->length)) { /* Not supported by clients */ ctlptr += 2; } /* Backoff */ if(ctlptr < (next->start + next->length)) { bcopy(ctlptr, (char *)&stmp,2); backoff = ntohs(stmp); #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Backing off to %d seconds\n", backoff); #endif if (verbose && backoff) fprintf (stderr, "Searching...\n"); if(backoff) timeout.tv_sec = backoff; ctlptr += 2; } if(next->seq == 0) { /* goto keep_waiting; */ keepWaitingDirsend(); return; } goto done_old; } /* Notes that we have to start searching 11 bytes before the */ /* expected start of the MULTI-PACKET line because the message */ /* might include up to 10 bytes of data after the trailing null */ /* The order of those bytes is two bytes each for Connection ID */ /* Packet-no, of, Received-through, Backoff */ seqtxt = nlsindex(next->start + max(0,next->length - 40),"MULTI-PACKET"); if(seqtxt) seqtxt+= 13; if((nd_pkts == 0) && (no_pkts == 0) && (seqtxt == NULL)) goto all_done; tmp = sscanf(seqtxt,"%d OF %d", &(next->seq), &nd_pkts); #ifdef DEBUG if (pfs_debug && (tmp == 0)) fprintf(stderr,"Cant read packet sequence number: %s", seqtxt); #endif done_old: #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Packet %d of %d\n",next->seq,nd_pkts); #endif if ((first == next) && (no_pkts == 0)) { if(first->seq == 1) { comp_thru = first; /* If only one packet, then return it */ if(nd_pkts == 1) goto all_done; } else gaps++; no_pkts = 1; next = ptalloc(); /* goto keep_waiting; */ keepWaitingDirsend(); return; } if(comp_thru && (next->seq <= comp_thru->seq)) ptfree(next); else if (next->seq < first->seq) { vtmp = first; first = next; first->next = vtmp; first->previous = NULL; vtmp->previous = first; if(first->seq == 1) comp_thru = first; no_pkts++; } else { vtmp = (comp_thru ? comp_thru : first); while (vtmp->seq < next->seq) { if(vtmp->next == NULL) { vtmp->next = next; next->previous = vtmp; next->next = NULL; no_pkts++; goto ins_done; } vtmp = vtmp->next; } if(vtmp->seq == next->seq) ptfree(next); else { vtmp->previous->next = next; next->previous = vtmp->previous; next->next = vtmp; vtmp->previous = next; no_pkts++; } } ins_done: while(comp_thru && comp_thru->next && (comp_thru->next->seq == (comp_thru->seq + 1))) { comp_thru = comp_thru->next; #ifndef USE_V3_PROT recvd_thru = htons(comp_thru->seq); bcopy((char *)&recvd_thru,pkt->start+7,2); /* Let server know we got it */ #endif /* We've made progress, so reset retry count */ retries = client_dirsrv_retry; /* Also, next retry will be only an acknowledgement */ /* but for now, we can't fill in the ack field */ #ifdef DEBUG if(pfs_debug > 2) fprintf(stderr,"Packets now received through %d\n",comp_thru->seq); #endif } /* See if there are any gaps */ if(!comp_thru || comp_thru->next) gaps++; else gaps = 0; if ((nd_pkts == 0) || (no_pkts < nd_pkts)) { next = ptalloc(); /* goto keep_waiting; */ keepWaitingDirsend(); return; } all_done: if(ackpend) { /* Send acknowledgement if requested */ #ifdef DEBUG if (pfs_debug > 2) { if (to.sin_family == AF_INET) fprintf(stderr,"Acknowledging final packet to %s(%d)\n", to_hostname, ntohs(this_conn_id)); else fprintf(stderr,"Acknowledging final packet\n"); (void) fflush(stderr); } #endif ns = sendto(lp,(char *)(pkt->start), pkt->length, 0, (struct sockaddr *)&to, S_AD_SZ); if(ns != pkt->length) { #ifdef DEBUG if (pfs_debug) { fprintf(stderr,"\nsent only %d/%d: ",ns, pkt->length); perror(""); } #endif } } close(lp); ptlfree(pkt); /* Get rid of any sequenced control packets */ if(scpflag) { while(first && (first->length < 0)) { vtmp = first; first = first->next; if(first) first->previous = NULL; ptfree(vtmp); } vtmp = first; while(vtmp && vtmp->next) { if(vtmp->next->length < 0) { if(vtmp->next->next) { vtmp->next = vtmp->next->next; ptfree(vtmp->next->previous); vtmp->next->previous = vtmp; } else { ptfree(vtmp->next); vtmp->next = NULL; } } vtmp = vtmp->next; } } /* return(first); */ dirsendReturn = first; dirsendDone = DSRET_DONE; } static void processEvent() { /* select - either recv is ready, or timeout */ /* see if timeout or error or wrong descriptor */ tmp = select(lp + 1, &readfds, (SELECTARG *)0, (SELECTARG *)0, selwait); if (tmp == 0) { timeoutProc(NULL,&timerId); } else if ((tmp < 0) || !FD_ISSET(lp,&readfds)) { #ifdef DEBUG if (pfs_debug) { fprintf(stderr, "select failed(processEvent): readfds=%x ", *(int *)&readfds); perror(""); } #endif close(lp); perrno = DIRSEND_SELECT_FAILED; ptlfree(first); ptlfree(pkt); /* return(NULL); */ dirsendReturn = NULL; dirsendDone = DSRET_SELECT_ERROR; } else { readProc(NULL,&lp,&inputId); } } void abortDirsend() { if (!dirsendDone) { close(lp); ptlfree(first); ptlfree(pkt); dirsendReturn = NULL; dirsendDone = DSRET_ABORTED; } return; }