/*
* $Id$
+ *
+ * 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
*/
-/**
- * \defgroup TcpSockets TCP client socket module for WebCit
- * \ingroup CitadelCommunitacion
- */
-/*@{*/
/*
* Uncomment this to log all communications with the Citadel server
#define SERV_TRACE 1
*/
+
#include "webcit.h"
#include "webserver.h"
-/**
- * \brief register the timeout
- * \param signum signalhandler number
- * \return signals
+extern int DisableGzip;
+long MaxRead = -1; /* should we do READ scattered or all at once? */
+
+/*
+ * register the timeout
*/
RETSIGTYPE timeout(int signum)
{
- lprintf(1, "Connection timed out.\n");
- exit(3);
+ lprintf(1, "Connection timed out; unable to reach citserver\n");
+ /* no exit here, since we need to server the connection unreachable thing. exit(3); */
}
-/**
- * \brief Connect a unix domain socket
- * \param sockpath where to open a unix domain socket
+/*
+ * Client side - connect to a unix domain socket
*/
int uds_connectsock(char *sockpath)
{
s = socket(AF_UNIX, SOCK_STREAM, 0);
if (s < 0) {
- lprintf(1, "Can't create socket: %s\n",
- strerror(errno));
+ lprintf(1, "Can't create socket[%s]: %s\n", sockpath, strerror(errno));
return(-1);
}
if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
- lprintf(1, "Can't connect: %s\n",
- strerror(errno));
+ lprintf(1, "Can't connect [%s]: %s\n", sockpath, strerror(errno));
close(s);
return(-1);
}
}
-/**
- * \brief Connect a TCP/IP socket
- * \param host the host to connect to
- * \param service the service on the host to call
+/*
+ * TCP client - connect to a host/port
*/
-int tcp_connectsock(char *host, char *service)
+int tcp_connectsock(char *host, int port)
{
- struct hostent *phe;
- struct servent *pse;
- struct protoent *ppe;
- struct sockaddr_in sin;
- int s;
+ struct sockaddr_in stSockAddr;
+ int rv;
+ int sock;
- memset(&sin, 0, sizeof(sin));
- sin.sin_family = AF_INET;
-
- pse = getservbyname(service, "tcp");
- if (pse) {
- sin.sin_port = pse->s_port;
- } else if ((sin.sin_port = htons((u_short) atoi(service))) == 0) {
- lprintf(1, "Can't get %s service entry\n", service);
- 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) {
- lprintf(1, "Can't get %s host entry: %s\n",
- host, strerror(errno));
- return (-1);
- }
- if ((ppe = getprotobyname("tcp")) == 0) {
- lprintf(1, "Can't get TCP protocol entry: %s\n",
- strerror(errno));
+ sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (sock < 0) {
+ lprintf(1, "Can't create socket: %s\n", strerror(errno));
return (-1);
}
- s = socket(PF_INET, SOCK_STREAM, ppe->p_proto);
- if (s < 0) {
- lprintf(1, "Can't create socket: %s\n", strerror(errno));
+ memset(&stSockAddr, 0, sizeof(struct sockaddr_in));
+ stSockAddr.sin_family = AF_INET;
+ stSockAddr.sin_port = htons(port);
+ rv = inet_pton(AF_INET, host, &stSockAddr.sin_addr);
+
+ if (rv <= 0) {
+ lprintf(1, "Can't grok %s: %s\n", host, strerror(errno));
return (-1);
}
- signal(SIGALRM, timeout);
- alarm(30);
- if (connect(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
- lprintf(1, "Can't connect to %s.%s: %s\n",
- host, service, strerror(errno));
- close(s);
+ if (connect(sock, (const struct sockaddr *)&stSockAddr, sizeof(struct sockaddr_in)) != 0) {
+ lprintf(1, "Can't connect to %s.%d: %s\n", host, port, strerror(errno));
+ close(sock);
return (-1);
}
- alarm(0);
- signal(SIGALRM, SIG_IGN);
- return (s);
+ return (sock);
}
-
-/**
- * \brief Input binary data from socket
- * \param buf the buffer to get the input to
- * \param bytes the maximal number of bytes to read
+/*
+ * input string from pipe
*/
-void serv_read(char *buf, int bytes)
+int serv_getln(char *strbuf, int bufsize)
{
- int len, rlen;
-
- len = 0;
- while (len < bytes) {
- rlen = read(WC->serv_sock, &buf[len], bytes - len);
- if (rlen < 1) {
- lprintf(1, "Server connection broken: %s\n",
- strerror(errno));
- wc_backtrace();
- close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
- memset(buf, 0, bytes);
- return;
- }
- len = len + rlen;
- }
+ wcsession *WCC = WC;
+ int len;
+
+ *strbuf = '\0';
+ StrBuf_ServGetln(WCC->MigrateReadLineBuf);
+ len = StrLength(WCC->MigrateReadLineBuf);
+ if (len > bufsize)
+ len = bufsize - 1;
+ memcpy(strbuf, ChrPtr(WCC->MigrateReadLineBuf), len);
+ FlushStrBuf(WCC->MigrateReadLineBuf);
+ strbuf[len] = '\0';
+#ifdef SERV_TRACE
+ lprintf(9, "%3d<<<%s\n", WC->serv_sock, strbuf);
+#endif
+ return len;
}
-/**
- * \brief input string from pipe
- */
-void serv_getln(char *strbuf, int bufsize)
+int StrBuf_ServGetln(StrBuf *buf)
{
- int ch, len;
- char buf[2];
+ wcsession *WCC = WC;
+ const char *ErrStr = NULL;
+ int rc;
+
+ FlushStrBuf(buf);
+ rc = StrBufTCP_read_buffered_line_fast(buf,
+ WCC->ReadBuf,
+ &WCC->ReadPos,
+ &WCC->serv_sock,
+ 5, 1,
+ &ErrStr);
+ if (rc < 0)
+ {
+ lprintf(1, "Server connection broken: %s\n",
+ (ErrStr)?ErrStr:"");
+ wc_backtrace();
+ WCC->serv_sock = (-1);
+ WCC->connected = 0;
+ WCC->logged_in = 0;
+ }
+#ifdef SERV_TRACE
+ else
+ {
+ long pos=0;
+ if (WCC->ReadPos != NULL)
+ pos = WCC->ReadPos - ChrPtr(buf);
+ lprintf(9, "%3d<<<[%ld]%s\n", WC->serv_sock, pos, ChrPtr(buf));
+ }
+#endif
+ return rc;
+}
- len = 0;
- strbuf[0] = 0;
- do {
- serv_read(&buf[0], 1);
- ch = buf[0];
- if ((ch != 13) && (ch != 10)) {
- strbuf[len++] = ch;
- }
- } while ((ch != 10) && (ch != 0) && (len < (bufsize-1)));
- strbuf[len] = 0;
+int StrBuf_ServGetBLOBBuffered(StrBuf *buf, long BlobSize)
+{
+ wcsession *WCC = WC;
+ const char *ErrStr;
+ int rc;
+
+ rc = StrBufReadBLOBBuffered(buf,
+ WCC->ReadBuf,
+ &WCC->ReadPos,
+ &WCC->serv_sock,
+ 1,
+ BlobSize,
+ NNN_TERM,
+ &ErrStr);
+ if (rc < 0)
+ {
+ lprintf(1, "Server connection broken: %s\n",
+ (ErrStr)?ErrStr:"");
+ wc_backtrace();
+ WCC->serv_sock = (-1);
+ WCC->connected = 0;
+ WCC->logged_in = 0;
+ }
#ifdef SERV_TRACE
- lprintf(9, "%3d>%s\n", WC->serv_sock, strbuf);
+ else
+ lprintf(9, "%3d<<<BLOB: %ld bytes\n", WC->serv_sock, StrLength(buf));
#endif
+
+ return rc;
}
+int StrBuf_ServGetBLOB(StrBuf *buf, long BlobSize)
+{
+ wcsession *WCC = WC;
+ const char *ErrStr;
+ int rc;
+
+ WCC->ReadPos = NULL;
+ rc = StrBufReadBLOB(buf, &WCC->serv_sock, 1, BlobSize, &ErrStr);
+ if (rc < 0)
+ {
+ lprintf(1, "Server connection broken: %s\n",
+ (ErrStr)?ErrStr:"");
+ wc_backtrace();
+ WCC->serv_sock = (-1);
+ WCC->connected = 0;
+ WCC->logged_in = 0;
+ }
+#ifdef SERV_TRACE
+ else
+ lprintf(9, "%3d<<<BLOB: %ld bytes\n", WC->serv_sock, StrLength(buf));
+#endif
+ return rc;
+}
-/**
- * \brief send binary to server
- * \param buf the buffer to write to citadel server
- * \param nbytes how many bytes to send to citadel server
+/*
+ * send binary to server
+ * buf the buffer to write to citadel server
+ * nbytes how many bytes to send to citadel server
*/
-void serv_write(char *buf, int nbytes)
+void serv_write(const char *buf, int nbytes)
{
+ wcsession *WCC = WC;
int bytes_written = 0;
int retval;
+
+ FlushStrBuf(WCC->ReadBuf);
+ WCC->ReadPos = NULL;
while (bytes_written < nbytes) {
- retval = write(WC->serv_sock, &buf[bytes_written],
+ retval = write(WCC->serv_sock, &buf[bytes_written],
nbytes - bytes_written);
if (retval < 1) {
+ const char *ErrStr = strerror(errno);
lprintf(1, "Server connection broken: %s\n",
- strerror(errno));
- close(WC->serv_sock);
- WC->serv_sock = (-1);
- WC->connected = 0;
- WC->logged_in = 0;
+ (ErrStr)?ErrStr:"");
+ close(WCC->serv_sock);
+ WCC->serv_sock = (-1);
+ WCC->connected = 0;
+ WCC->logged_in = 0;
return;
}
bytes_written = bytes_written + retval;
}
-/**
- * \brief send line to server
- * \param string the line to send to the citadel server
+/*
+ * send line to server
+ * string the line to send to the citadel server
*/
-void serv_puts(char *string)
+void serv_puts(const char *string)
{
+ wcsession *WCC = WC;
#ifdef SERV_TRACE
- lprintf(9, "%3d<%s\n", WC->serv_sock, string);
+ lprintf(9, "%3d>>>%s\n", WC->serv_sock, string);
#endif
+ FlushStrBuf(WCC->ReadBuf);
+ WCC->ReadPos = NULL;
+
serv_write(string, strlen(string));
serv_write("\n", 1);
}
+/*
+ * send line to server
+ * string the line to send to the citadel server
+ */
+void serv_putbuf(const StrBuf *string)
+{
+ wcsession *WCC = WC;
+#ifdef SERV_TRACE
+ lprintf(9, "%3d>>>%s\n", WC->serv_sock, ChrPtr(string));
+#endif
+ FlushStrBuf(WCC->ReadBuf);
+ WCC->ReadPos = NULL;
-/**
- * \brief convenience function to send stuff to the server
- * \param format the formatstring
- * \param ... the entities to insert into format
+ serv_write(ChrPtr(string), StrLength(string));
+ serv_write("\n", 1);
+}
+
+
+/*
+ * convenience function to send stuff to the server
+ * format the formatstring
+ * ... the entities to insert into format
*/
void serv_printf(const char *format,...)
{
+ wcsession *WCC = WC;
va_list arg_ptr;
char buf[SIZ];
size_t len;
+ FlushStrBuf(WCC->ReadBuf);
+ WCC->ReadPos = NULL;
+
va_start(arg_ptr, format);
vsnprintf(buf, sizeof buf, format, arg_ptr);
va_end(arg_ptr);
buf[len] = '\0';
serv_write(buf, len);
#ifdef SERV_TRACE
- lprintf(9, "<%s", buf);
+ lprintf(9, ">>>%s", buf);
+#endif
+}
+
+
+
+/**
+ * Read binary data from server into memory using a series of
+ * server READ commands.
+ * \return the read content as StrBuf
+ */
+int serv_read_binary(StrBuf *Ret, size_t total_len, StrBuf *Buf)
+{
+ wcsession *WCC = WC;
+ size_t bytes = 0;
+ size_t thisblock = 0;
+
+ if (Ret == NULL)
+ return -1;
+
+ if (MaxRead == -1)
+ {
+ serv_printf("READ %d|"SIZE_T_FMT, 0, total_len);
+ if (StrBuf_ServGetln(Buf) > 0)
+ {
+ long YetRead;
+ const char *ErrStr;
+ const char *pch;
+ int rc;
+
+ if (GetServerStatus(Buf, NULL) == 6)
+ {
+ StrBufCutLeft(Buf, 4);
+ thisblock = StrTol(Buf);
+ if (WCC->serv_sock==-1) {
+ FlushStrBuf(Ret);
+ return -1;
+ }
+
+ if (WCC->ReadPos != NULL) {
+ pch = ChrPtr(WCC->ReadBuf);
+
+ YetRead = WCC->ReadPos - pch;
+ if (YetRead > 0)
+ {
+ long StillThere;
+
+ StillThere = StrLength(WCC->ReadBuf) -
+ YetRead;
+
+ StrBufPlain(Ret,
+ WCC->ReadPos,
+ StillThere);
+ total_len -= StillThere;
+ }
+ FlushStrBuf(WCC->ReadBuf);
+ WCC->ReadPos = NULL;
+ }
+ if (total_len > 0)
+ {
+ rc = StrBufReadBLOB(Ret,
+ &WCC->serv_sock,
+ 1,
+ total_len,
+ &ErrStr);
+ if (rc < 0)
+ {
+ lprintf(1, "Server connection broken: %s\n",
+ (ErrStr)?ErrStr:"");
+ wc_backtrace();
+ WCC->serv_sock = (-1);
+ WCC->connected = 0;
+ WCC->logged_in = 0;
+ return rc;
+ }
+ else
+ return StrLength(Ret);
+ }
+ else
+ return StrLength(Ret);
+ }
+ }
+ else
+ return -1;
+ }
+ else while ((WCC->serv_sock!=-1) &&
+ (bytes < total_len)) {
+ thisblock = MaxRead;
+ if ((total_len - bytes) < thisblock) {
+ thisblock = total_len - bytes;
+ if (thisblock == 0) {
+ FlushStrBuf(Ret);
+ return -1;
+ }
+ }
+ serv_printf("READ %d|%d", (int)bytes, (int)thisblock);
+ if (StrBuf_ServGetln(Buf) > 0)
+ {
+ if (GetServerStatus(Buf, NULL) == 6)
+ {
+ StrBufCutLeft(Buf, 4);
+ thisblock = StrTol(Buf);
+ if (WCC->serv_sock==-1) {
+ FlushStrBuf(Ret);
+ return -1;
+ }
+ StrBuf_ServGetBLOBBuffered(Ret, thisblock);
+ bytes += thisblock;
+ }
+ else {
+ lprintf(3, "Error: %s\n", ChrPtr(Buf) + 4);
+ return -1;
+ }
+ }
+ }
+ return StrLength(Ret);
+}
+
+
+int ClientGetLine(ParsedHttpHdrs *Hdr, StrBuf *Target)
+{
+ const char *Error;
+#ifdef HAVE_OPENSSL
+ const char *pch, *pchs;
+ int rlen, len, retval = 0;
+
+ if (is_https) {
+ int ntries = 0;
+ if (StrLength(Hdr->ReadBuf) > 0) {
+ pchs = ChrPtr(Hdr->ReadBuf);
+ pch = strchr(pchs, '\n');
+ if (pch != NULL) {
+ rlen = 0;
+ len = pch - pchs;
+ if (len > 0 && (*(pch - 1) == '\r') )
+ rlen ++;
+ StrBufSub(Target, Hdr->ReadBuf, 0, len - rlen);
+ StrBufCutLeft(Hdr->ReadBuf, len + 1);
+ return len - rlen;
+ }
+ }
+
+ while (retval == 0) {
+ pch = NULL;
+ pchs = ChrPtr(Hdr->ReadBuf);
+ if (*pchs != '\0')
+ pch = strchr(pchs, '\n');
+ if (pch == NULL) {
+ retval = client_read_sslbuffer(Hdr->ReadBuf, SLEEPING);
+ pchs = ChrPtr(Hdr->ReadBuf);
+ pch = strchr(pchs, '\n');
+ }
+ if (retval == 0) {
+ sleeeeeeeeeep(1);
+ ntries ++;
+ }
+ if (ntries > 10)
+ return 0;
+ }
+ if ((retval > 0) && (pch != NULL)) {
+ rlen = 0;
+ len = pch - pchs;
+ if (len > 0 && (*(pch - 1) == '\r') )
+ rlen ++;
+ StrBufSub(Target, Hdr->ReadBuf, 0, len - rlen);
+ StrBufCutLeft(Hdr->ReadBuf, len + 1);
+ return len - rlen;
+
+ }
+ else
+ return -1;
+ }
+ else
+#endif
+ return StrBufTCP_read_buffered_line_fast(Target,
+ Hdr->ReadBuf,
+ &Hdr->Pos,
+ &Hdr->http_sock,
+ 5,
+ 1,
+ &Error);
+}
+
+/*
+ * This is a generic function to set up a master socket for listening on
+ * a TCP port. The server shuts down if the bind fails. (IPv4/IPv6 version)
+ *
+ * ip_addr IP address to bind
+ * port_number port number to bind
+ * queue_len number of incoming connections to allow in the queue
+ */
+int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
+{
+ struct protoent *p;
+ struct sockaddr_in6 sin;
+ int s, i;
+
+ memset(&sin, 0, sizeof(sin));
+ sin.sin6_family = AF_INET6;
+
+ if ((ip_addr == NULL) || (IsEmptyStr(ip_addr)) || (!strcmp(ip_addr, "0.0.0.0"))) {
+ sin.sin6_addr = in6addr_any;
+ } else {
+ char bind_to[256];
+ if ((strchr(ip_addr, '.')) && (!strchr(ip_addr, ':'))) {
+ snprintf(bind_to, sizeof bind_to, "::ffff:%s", ip_addr);
+ }
+ else {
+ safestrncpy(bind_to, ip_addr, sizeof bind_to);
+ }
+ if (inet_pton(AF_INET6, bind_to, &sin.sin6_addr) <= 0) {
+ lprintf(1, "Error binding to [%s] : %s\n", ip_addr, strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ }
+
+ if (port_number == 0) {
+ lprintf(1, "Cannot start: no port number specified.\n");
+ return (-WC_EXIT_BIND);
+ }
+ sin.sin6_port = htons((u_short) port_number);
+
+ p = getprotobyname("tcp");
+
+ s = socket(PF_INET6, SOCK_STREAM, (p->p_proto));
+ if (s < 0) {
+ lprintf(1, "Can't create an IPv6 socket: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ /* Set some socket options that make sense. */
+ i = 1;
+ setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
+
+ #ifndef __APPLE__
+ fcntl(s, F_SETFL, O_NONBLOCK); /* maide: this statement is incorrect
+ there should be a preceding F_GETFL
+ and a bitwise OR with the previous
+ fd flags */
+ #endif
+
+ if (bind(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
+ lprintf(1, "Can't bind: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ if (listen(s, queue_len) < 0) {
+ lprintf(1, "Can't listen: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ return (s);
+}
+
+#if 0
+/*
+ * This is a generic function to set up a master socket for listening on
+ * a TCP port. The server shuts down if the bind fails. (Old IPv4-only version)
+ *
+ * ip_addr IP address to bind
+ * port_number port number to bind
+ * queue_len number of incoming connections to allow in the queue
+ */
+int ig_tcp_server(char *ip_addr, int port_number, int queue_len)
+{
+ struct protoent *p;
+ struct sockaddr_in sin;
+ int s, i;
+
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+ if (ip_addr == NULL) {
+ sin.sin_addr.s_addr = INADDR_ANY;
+ } else {
+ sin.sin_addr.s_addr = inet_addr(ip_addr);
+ }
+
+ if (sin.sin_addr.s_addr == INADDR_NONE) {
+ sin.sin_addr.s_addr = INADDR_ANY;
+ }
+
+ if (port_number == 0) {
+ lprintf(1, "Cannot start: no port number specified.\n");
+ return (-WC_EXIT_BIND);
+ }
+ sin.sin_port = htons((u_short) port_number);
+
+ p = getprotobyname("tcp");
+
+ s = socket(PF_INET, SOCK_STREAM, (p->p_proto));
+ if (s < 0) {
+ lprintf(1, "Can't create an IPv4 socket: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ /* Set some socket options that make sense. */
+ i = 1;
+ setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
+
+ if (bind(s, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
+ lprintf(1, "Can't bind: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ if (listen(s, queue_len) < 0) {
+ lprintf(1, "Can't listen: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+ return (s);
+}
+#endif
+
+
+/*
+ * Create a Unix domain socket and listen on it
+ * sockpath - file name of the unix domain socket
+ * queue_len - Number of incoming connections to allow in the queue
+ */
+int ig_uds_server(char *sockpath, int queue_len)
+{
+ struct sockaddr_un addr;
+ int s;
+ int i;
+ int actual_queue_len;
+
+ actual_queue_len = queue_len;
+ if (actual_queue_len < 5) actual_queue_len = 5;
+
+ i = unlink(sockpath);
+ if ((i != 0) && (errno != ENOENT)) {
+ lprintf(1, "webcit: can't unlink %s: %s\n",
+ sockpath, strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+
+ memset(&addr, 0, sizeof(addr));
+ addr.sun_family = AF_UNIX;
+ safestrncpy(addr.sun_path, sockpath, sizeof addr.sun_path);
+
+ s = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (s < 0) {
+ lprintf(1, "webcit: Can't create a unix domain socket: %s\n", strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+
+ if (bind(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+ lprintf(1, "webcit: Can't bind: %s\n",
+ strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+
+ if (listen(s, actual_queue_len) < 0) {
+ lprintf(1, "webcit: Can't listen: %s\n",
+ strerror(errno));
+ return (-WC_EXIT_BIND);
+ }
+
+ chmod(sockpath, 0777);
+ 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 client_read_to(ParsedHttpHdrs *Hdr, StrBuf *Target, int bytes, int timeout)
+{
+ const char *Error;
+ int retval = 0;
+
+#ifdef HAVE_OPENSSL
+ if (is_https) {
+ long bufremain;
+ long baselen;
+
+ baselen = StrLength(Target);
+
+ if (Hdr->Pos == NULL)
+ Hdr->Pos = ChrPtr(Hdr->ReadBuf);
+ bufremain = StrLength(Hdr->ReadBuf) - (Hdr->Pos - ChrPtr(Hdr->ReadBuf));
+
+ if (bytes < bufremain)
+ bufremain = bytes;
+ StrBufAppendBufPlain(Target, Hdr->Pos, bufremain, 0);
+ StrBufCutLeft(Hdr->ReadBuf, bufremain);
+
+ if (bytes > bufremain)
+ {
+ while ((StrLength(Hdr->ReadBuf) + StrLength(Target) < bytes + baselen) &&
+ (retval >= 0))
+ retval = client_read_sslbuffer(Hdr->ReadBuf, timeout);
+ if (retval >= 0) {
+ StrBufAppendBuf(Target, Hdr->ReadBuf, 0); /* todo: Buf > bytes? */
+#ifdef HTTP_TRACING
+ write(2, "\033[32m", 5);
+ write(2, buf, bytes);
+ write(2, "\033[30m", 5);
+#endif
+ return 1;
+ }
+ else {
+ lprintf(2, "client_read_ssl() failed\n");
+ return -1;
+ }
+ }
+ else
+ return 1;
+ }
#endif
+
+ retval = StrBufReadBLOBBuffered(Target,
+ Hdr->ReadBuf,
+ &Hdr->Pos,
+ &Hdr->http_sock,
+ 1,
+ bytes,
+ O_TERM,
+ &Error);
+ if (retval < 0) {
+ lprintf(2, "client_read() failed: %s\n",
+ Error);
+ wc_backtrace();
+ return retval;
+ }
+
+#ifdef HTTP_TRACING
+ write(2, "\033[32m", 5);
+ write(2, buf, bytes);
+ write(2, "\033[30m", 5);
+#endif
+ return 1;
+}
+
+
+/*
+ * Begin buffering HTTP output so we can transmit it all in one write operation later.
+ */
+void begin_burst(void)
+{
+ if (WC->WBuf == NULL) {
+ WC->WBuf = NewStrBufPlain(NULL, 32768);
+ }
+}
+
+
+/*
+ * Finish buffering HTTP output. [Compress using zlib and] output with a Content-Length: header.
+ */
+long end_burst(void)
+{
+ wcsession *WCC = WC;
+ const char *ptr, *eptr;
+ long count;
+ ssize_t res = 0;
+ fd_set wset;
+ int fdflags;
+
+ if (!DisableGzip && (WCC->Hdr->HR.gzip_ok))
+ {
+ if (CompressBuffer(WCC->WBuf) > 0)
+ hprintf("Content-encoding: gzip\r\n");
+ else {
+ lprintf(CTDL_ALERT, "Compression failed: %d [%s] sending uncompressed\n", errno, strerror(errno));
+ wc_backtrace();
+ }
+ }
+
+ if (WCC->WFBuf != NULL) {
+ WildFireSerializePayload(WCC->WFBuf, WCC->HBuf, &WCC->Hdr->nWildfireHeaders, NULL);
+ FreeStrBuf(&WCC->WFBuf);
+ }
+
+ if (WCC->Hdr->HR.prohibit_caching)
+ hprintf("Pragma: no-cache\r\nCache-Control: no-store\r\nExpires:-1\r\n");
+ hprintf("Content-length: %d\r\n\r\n", StrLength(WCC->WBuf));
+
+ ptr = ChrPtr(WCC->HBuf);
+ count = StrLength(WCC->HBuf);
+ eptr = ptr + count;
+
+#ifdef HAVE_OPENSSL
+ if (is_https) {
+ client_write_ssl(WCC->HBuf);
+ client_write_ssl(WCC->WBuf);
+ return (count);
+ }
+#endif
+
+
+#ifdef HTTP_TRACING
+
+ write(2, "\033[34m", 5);
+ write(2, ptr, StrLength(WCC->WBuf));
+ write(2, "\033[30m", 5);
+#endif
+ if (WCC->Hdr->http_sock == -1)
+ return -1;
+ fdflags = fcntl(WC->Hdr->http_sock, F_GETFL);
+
+ while ((ptr < eptr) && (WCC->Hdr->http_sock != -1)){
+ if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
+ FD_ZERO(&wset);
+ FD_SET(WCC->Hdr->http_sock, &wset);
+ if (select(WCC->Hdr->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
+ lprintf(2, "client_write: Socket select failed (%s)\n", strerror(errno));
+ return -1;
+ }
+ }
+
+ if ((WCC->Hdr->http_sock == -1) ||
+ (res = write(WCC->Hdr->http_sock,
+ ptr,
+ count)) == -1) {
+ lprintf(2, "client_write: Socket write failed (%s)\n", strerror(errno));
+ wc_backtrace();
+ return res;
+ }
+ count -= res;
+ ptr += res;
+ }
+
+ ptr = ChrPtr(WCC->WBuf);
+ count = StrLength(WCC->WBuf);
+ eptr = ptr + count;
+
+#ifdef HTTP_TRACING
+
+ write(2, "\033[34m", 5);
+ write(2, ptr, StrLength(WCC->WBuf));
+ write(2, "\033[30m", 5);
+#endif
+
+ while ((ptr < eptr) && (WCC->Hdr->http_sock != -1)) {
+ if ((fdflags & O_NONBLOCK) == O_NONBLOCK) {
+ FD_ZERO(&wset);
+ FD_SET(WCC->Hdr->http_sock, &wset);
+ if (select(WCC->Hdr->http_sock + 1, NULL, &wset, NULL, NULL) == -1) {
+ lprintf(2, "client_write: Socket select failed (%s)\n", strerror(errno));
+ return -1;
+ }
+ }
+
+ if ((WCC->Hdr->http_sock == -1) ||
+ (res = write(WCC->Hdr->http_sock,
+ ptr,
+ count)) == -1) {
+ lprintf(2, "client_write: Socket write failed (%s)\n", strerror(errno));
+ wc_backtrace();
+ return res;
+ }
+ count -= res;
+ ptr += res;
+ }
+
+ return StrLength(WCC->WBuf);
}
-/*@}*/
+/*
+ * lingering_close() a`la Apache. see
+ * http://www.apache.org/docs/misc/fin_wait_2.html for rationale
+ */
+int lingering_close(int fd)
+{
+ char buf[SIZ];
+ int i;
+ fd_set set;
+ struct timeval tv, start;
+
+ gettimeofday(&start, NULL);
+ if (fd == -1)
+ return -1;
+ shutdown(fd, 1);
+ do {
+ do {
+ gettimeofday(&tv, NULL);
+ tv.tv_sec = SLEEPING - (tv.tv_sec - start.tv_sec);
+ tv.tv_usec = start.tv_usec - tv.tv_usec;
+ if (tv.tv_usec < 0) {
+ tv.tv_sec--;
+ tv.tv_usec += 1000000;
+ }
+ FD_ZERO(&set);
+ FD_SET(fd, &set);
+ i = select(fd + 1, &set, NULL, NULL, &tv);
+ } while (i == -1 && errno == EINTR);
+
+ if (i <= 0)
+ break;
+
+ i = read(fd, buf, sizeof buf);
+ } while (i != 0 && (i != -1 || errno == EINTR));
+
+ return close(fd);
+}
+
+void
+HttpNewModule_TCPSOCKETS
+(ParsedHttpHdrs *httpreq)
+{
+
+ httpreq->ReadBuf = NewStrBufPlain(NULL, SIZ * 4);
+}
+
+void
+HttpDetachModule_TCPSOCKETS
+(ParsedHttpHdrs *httpreq)
+{
+
+ FlushStrBuf(httpreq->ReadBuf);
+ ReAdjustEmptyBuf(httpreq->ReadBuf, 4 * SIZ, SIZ);
+}
+
+void
+HttpDestroyModule_TCPSOCKETS
+(ParsedHttpHdrs *httpreq)
+{
+
+ FreeStrBuf(&httpreq->ReadBuf);
+}
+
+
+void
+SessionNewModule_TCPSOCKETS
+(wcsession *sess)
+{
+ sess->CLineBuf = NewStrBuf();
+ sess->MigrateReadLineBuf = NewStrBuf();
+}
+
+void
+SessionDestroyModule_TCPSOCKETS
+(wcsession *sess)
+{
+ FreeStrBuf(&sess->CLineBuf);
+ FreeStrBuf(&sess->ReadBuf);
+ sess->ReadPos = NULL;
+ FreeStrBuf(&sess->MigrateReadLineBuf);
+ if (sess->serv_sock > 0)
+ close(sess->serv_sock);
+}
projects / citadel.git / blobdiff