+++ /dev/null
-/*
- * 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) 1987-2010 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"
-
-int sock_connect(char *host, char *service)
-{
- struct in6_addr serveraddr;
- struct addrinfo hints;
- struct addrinfo *res = NULL;
- struct addrinfo *ai = NULL;
- int rc = (-1);
- int sock = (-1);
-
- if ((host == NULL) || IsEmptyStr(host))
- return (-1);
- if ((service == NULL) || IsEmptyStr(service))
- return (-1);
-
- memset(&hints, 0x00, sizeof(hints));
- hints.ai_flags = AI_NUMERICSERV;
- hints.ai_family = AF_UNSPEC;
- hints.ai_socktype = SOCK_STREAM;
-
- /*
- * Handle numeric IPv4 and IPv6 addresses
- */
- rc = inet_pton(AF_INET, host, &serveraddr);
- if (rc == 1) { /* dotted quad */
- hints.ai_family = AF_INET;
- hints.ai_flags |= AI_NUMERICHOST;
- } else {
- rc = inet_pton(AF_INET6, host, &serveraddr);
- if (rc == 1) { /* IPv6 address */
- hints.ai_family = AF_INET6;
- hints.ai_flags |= AI_NUMERICHOST;
- }
- }
-
- /* Begin the connection process */
-
- rc = getaddrinfo(host, service, &hints, &res);
- if (rc != 0) {
- CtdlLogPrintf(CTDL_ERR, "%s: %s\n", host, gai_strerror(rc));
- return(-1);
- }
-
- /*
- * Try all available addresses until we connect to one or until we run out.
- */
- for (ai = res; ai != NULL; ai = ai->ai_next) {
- sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
- if (sock < 0) {
- CtdlLogPrintf(CTDL_ERR, "socket() failed: %s\n", strerror(errno));
- return(-1);
- }
- rc = connect(sock, ai->ai_addr, ai->ai_addrlen);
- if (rc >= 0) {
- return(sock);
- }
- else {
- CtdlLogPrintf(CTDL_ERR, "connect() failed: %s\n", strerror(errno));
- close(sock);
- }
- }
-
- return(-1);
-}
-
-
-
-/*
- * 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 = MyContext();
- 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 = MyContext();
- 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, int nSec)
-{
- CitContext *CCC = MyContext();
- const char *Error;
- int rc;
-
- FlushStrBuf(Target);
- rc = StrBufTCP_read_buffered_line_fast(Target,
- CCC->sReadBuf,
- &CCC->sPos,
- sock, nSec, 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 = MyContext();
- const char *pCh;
-
- FlushStrBuf(CCC->sMigrateBuf);
- retval = CtdlSockGetLine(sock, CCC->sMigrateBuf, 5);
-
- i = StrLength(CCC->sMigrateBuf);
- pCh = ChrPtr(CCC->sMigrateBuf);
-
- memcpy(buf, pCh, i + 1);
-
- 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 nSuccessLess = 0;
- int bytes_written = 0;
- int retval;
- fd_set rfds;
- int fdflags;
- int IsNonBlock;
- int timeout = 50;
- struct timeval tv;
- int selectresolution = 100;
-
- fdflags = fcntl(*sock, F_GETFL);
- IsNonBlock = (fdflags & O_NONBLOCK) == O_NONBLOCK;
-
- while ((nSuccessLess < timeout) &&
- (*sock != -1) &&
- (bytes_written < nbytes))
- {
- if (IsNonBlock){
- tv.tv_sec = selectresolution;
- tv.tv_usec = 0;
-
- FD_ZERO(&rfds);
- FD_SET(*sock, &rfds);
- if (select(*sock + 1, NULL, &rfds, NULL, &tv) == -1) {
-/// *Error = strerror(errno);
- close (*sock);
- *sock = -1;
- return -1;
- }
- }
- if (IsNonBlock && ! FD_ISSET(*sock, &rfds)) {
- nSuccessLess ++;
- continue;
- }
- retval = write(*sock, &buf[bytes_written],
- nbytes - bytes_written);
- if (retval < 1) {
- sock_close(*sock);
- *sock = -1;
- return (-1);
- }
- bytes_written = bytes_written + retval;
- if (IsNonBlock && (bytes_written == nbytes)){
- tv.tv_sec = selectresolution;
- tv.tv_usec = 0;
-
- FD_ZERO(&rfds);
- FD_SET(*sock, &rfds);
- if (select(*sock + 1, NULL, &rfds, NULL, &tv) == -1) {
-/// *Error = strerror(errno);
- close (*sock);
- *sock = -1;
- return -1;
- }
- }
- }
- return (bytes_written);
-}
-
-
-
-/*
- * 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_err(int *sock, char *buf, int bufsize, int *rc, int nSec)
-{
- int i, retval;
- CitContext *CCC = MyContext();
- const char *pCh;
-
- FlushStrBuf(CCC->sMigrateBuf);
- *rc = retval = CtdlSockGetLine(sock, CCC->sMigrateBuf, nSec);
-
- i = StrLength(CCC->sMigrateBuf);
- pCh = ChrPtr(CCC->sMigrateBuf);
-
- memcpy(buf, pCh, i + 1);
-
- FlushStrBuf(CCC->sMigrateBuf);
- if (retval < 0) {
- safestrncpy(&buf[i], "000", bufsize - i);
- i += 3;
- }
- return i;
-}
-
-/*
- * 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, int nSec)
-{
- int rc = 0;
- char bigbuf[1024];
- int g;
-
- g = sock_getln_err(sock, buf, SIZ, &rc, nSec);
- if (rc < 0)
- return rc;
- if (g < 4)
- return (g);
- if (buf[3] != '-')
- return (g);
-
- do {
- g = sock_getln_err(sock, bigbuf, SIZ, &rc, nSec);
- if (rc < 0)
- return rc;
- 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