+++ /dev/null
-/*
- * $Id$
- *
- * This module handles client-side sockets opened by the Citadel server (for
- * the client side of Internet protocols, etc.) It does _not_ handle client
- * sockets for the Citadel client; for that you must look in ipc_c_tcp.c
- * (which, uncoincidentally, bears a striking similarity to this file).
- *
- * Copyright (c) 1987-2009 by the citadel.org team
- *
- * 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
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <string.h>
-#include <pwd.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
-#include "sysdep_decls.h"
-#include "config.h"
-#include "clientsocket.h"
-
-#include "ctdl_module.h"
-
-#ifndef INADDR_NONE
-#define INADDR_NONE 0xffffffff
-#endif
-
-int sock_connect(char *host, char *service, char *protocol)
-{
- struct hostent *phe;
- struct servent *pse;
- struct protoent *ppe;
- struct sockaddr_in sin;
- struct sockaddr_in egress_sin;
- int s, type;
-
- if ((host == NULL) || IsEmptyStr(host))
- return(-1);
- if ((service == NULL) || IsEmptyStr(service))
- return(-1);
- if ((protocol == NULL) || IsEmptyStr(protocol))
- return(-1);
-
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
-
- pse = getservbyname(service, protocol);
- if (pse) {
- sin.sin_port = pse->s_port;
- } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
- CtdlLogPrintf(CTDL_CRIT, "Can't get %s service entry: %s\n",
- service, strerror(errno));
- return(-1);
- }
- phe = gethostbyname(host);
- if (phe) {
- memcpy(&sin.sin_addr, phe->h_addr, phe->h_length);
- } else if ((sin.sin_addr.s_addr = inet_addr(host)) == INADDR_NONE) {
- CtdlLogPrintf(CTDL_ERR, "Can't get %s host entry: %s\n",
- host, strerror(errno));
- return(-1);
- }
- if ((ppe = getprotobyname(protocol)) == 0) {
- CtdlLogPrintf(CTDL_CRIT, "Can't get %s protocol entry: %s\n",
- protocol, strerror(errno));
- return(-1);
- }
- if (!strcmp(protocol, "udp")) {
- type = SOCK_DGRAM;
- } else {
- type = SOCK_STREAM;
- }
-
- s = socket(PF_INET, type, ppe->p_proto);
- if (s < 0) {
- CtdlLogPrintf(CTDL_CRIT, "Can't create socket: %s\n", strerror(errno));
- return(-1);
- }
-
- /* If citserver is bound to a specific IP address on the host, make
- * sure we use that address for outbound connections.
- */
- memset(&egress_sin, 0, sizeof(egress_sin));
- egress_sin.sin_family = AF_INET;
- if (!IsEmptyStr(config.c_ip_addr)) {
- egress_sin.sin_addr.s_addr = inet_addr(config.c_ip_addr);
- if (egress_sin.sin_addr.s_addr == !INADDR_ANY) {
- egress_sin.sin_addr.s_addr = INADDR_ANY;
- }
-
- /* If this bind fails, no problem; we can still use INADDR_ANY */
- bind(s, (struct sockaddr *)&egress_sin, sizeof(egress_sin));
- }
-
- /* Now try to connect to the remote host. */
- if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
- CtdlLogPrintf(CTDL_ERR, "Can't connect to %s:%s: %s\n",
- host, service, strerror(errno));
- close(s);
- return(-1);
- }
-
- return (s);
-}
-
-
-
-/*
- * Read data from the client socket.
- *
- * sock socket fd to read from
- * buf buffer to read into
- * bytes number of bytes to read
- * timeout Number of seconds to wait before timing out
- *
- * Possible return values:
- * 1 Requested number of bytes has been read.
- * 0 Request timed out.
- * -1 Connection is broken, or other error.
- */
-int socket_read_blob(int *Socket,
- StrBuf *Target,
- int bytes,
- int timeout)
-{
- CitContext *CCC=CC;
- const char *Error;
- int retval = 0;
-
-
- retval = StrBufReadBLOBBuffered(Target,
- CCC->sReadBuf,
- &CCC->sPos,
- Socket,
- 1,
- bytes,
- O_TERM,
- &Error);
- if (retval < 0) {
- CtdlLogPrintf(CTDL_CRIT,
- "%s failed: %s\n",
- __FUNCTION__,
- Error);
- }
- return retval;
-}
-
-
-int sock_read_to(int *sock, char *buf, int bytes, int timeout, int keep_reading_until_full)
-{
- CitContext *CCC=CC;
- int rc;
-
- FlushStrBuf(CCC->MigrateBuf);
- rc = socket_read_blob(sock,
- CCC->sMigrateBuf,
- bytes,
- timeout);
- if (rc < 0)
- {
- *buf = '\0';
- return rc;
- }
- else
- {
- if (StrLength(CCC->MigrateBuf) < bytes)
- bytes = StrLength(CCC->MigrateBuf);
- memcpy(buf,
- ChrPtr(CCC->MigrateBuf),
- bytes);
-
- FlushStrBuf(CCC->MigrateBuf);
- return rc;
- }
-}
-
-
-int CtdlSockGetLine(int *sock, StrBuf *Target)
-{
- CitContext *CCC=CC;
- const char *Error;
- int rc;
-
- rc = StrBufTCP_read_buffered_line_fast(Target,
- CCC->sReadBuf,
- &CCC->sPos,
- sock,
- 5,
- 1,
- &Error);
- if ((rc < 0) && (Error != NULL))
- CtdlLogPrintf(CTDL_CRIT,
- "%s failed: %s\n",
- __FUNCTION__,
- Error);
- return rc;
-}
-
-
-/*
- * client_getln() ... Get a LF-terminated line of text from the client.
- * (This is implemented in terms of client_read() and could be
- * justifiably moved out of sysdep.c)
- */
-int sock_getln(int *sock, char *buf, int bufsize)
-{
- int i, retval;
- CitContext *CCC=CC;
- const char *pCh;
-
- FlushStrBuf(CCC->sMigrateBuf);
- retval = CtdlSockGetLine(sock, CCC->sMigrateBuf);
-
- i = StrLength(CCC->sMigrateBuf);
- pCh = ChrPtr(CCC->sMigrateBuf);
- /* Strip the trailing LF, and the trailing CR if present.
- */
- if (bufsize <= i)
- i = bufsize - 1;
- while ( (i > 0)
- && ( (pCh[i - 1]==13)
- || ( pCh[i - 1]==10)) ) {
- i--;
- }
- memcpy(buf, pCh, i);
- buf[i] = 0;
-
- FlushStrBuf(CCC->sMigrateBuf);
- if (retval < 0) {
- safestrncpy(&buf[i], "000", bufsize - i);
- i += 3;
- }
- return i;
-}
-
-
-/*
- * sock_read() - input binary data from socket.
- * Returns the number of bytes read, or -1 for error.
- */
-INLINE int sock_read(int *sock, char *buf, int bytes, int keep_reading_until_full)
-{
- return sock_read_to(sock, buf, bytes, CLIENT_TIMEOUT, keep_reading_until_full);
-}
-
-
-/*
- * sock_write() - send binary to server.
- * Returns the number of bytes written, or -1 for error.
- */
-int sock_write(int *sock, const char *buf, int nbytes)
-{
- int bytes_written = 0;
- int retval;
-
- while ((*sock != -1) &&
- (bytes_written < nbytes))
- {
- retval = write(*sock, &buf[bytes_written],
- nbytes - bytes_written);
- if (retval < 1) {
- sock_close(*sock);
- *sock = -1;
- return (-1);
- }
- bytes_written = bytes_written + retval;
- }
- return (bytes_written);
-}
-
-
-/*
- * Multiline version of sock_gets() ... this is a convenience function for
- * client side protocol implementations. It only returns the first line of
- * a multiline response, discarding the rest.
- */
-int ml_sock_gets(int *sock, char *buf) {
- char bigbuf[1024];
- int g;
-
- g = sock_getln(sock, buf, SIZ);
- if (g < 4) return(g);
- if (buf[3] != '-') return(g);
-
- do {
- g = sock_getln(sock, bigbuf, SIZ);
- if (g < 0) return(g);
- } while ( (g >= 4) && (bigbuf[3] == '-') );
-
- return(strlen(buf));
-}
-
-
-/*
- * sock_puts() - send line to server - implemented in terms of serv_write()
- * Returns the number of bytes written, or -1 for error.
- */
-int sock_puts(int *sock, char *buf)
-{
- int i, j;
-
- i = sock_write(sock, buf, strlen(buf));
- if (i<0) return(i);
- j = sock_write(sock, "\n", 1);
- if (j<0) return(j);
- return(i+j);
-}
projects / citadel.git / blobdiff