7.6.1-pre3

win32 systems

CHANGES

@@ -7,10 +7,50 @@
                                History of Changes
 
 
+Daniel (7 February 2001)
+- SM found a flaw in the response reading function for FTP that could make
+  libcurl not get out of the loop properly when it should, if libcurl got -1
+  returned when reading the socket.
+
+- I found a similar mistake in http.c when using a proxy and reading the
+  results from the proxy connection.
+
+Daniel (6 February 2001)
+- A friendly person named "SM" (nntp at iname.com) pointed out that the VC
+  makefile in src/ needed the libpath set for the debug build to work.
+
+- Daniel Gehriger stepped in to assist with the VC++ stuff Robert Weaver
+  brought up yesterday.
+
+Daniel (5 February 2001)
+- Jun-ichiro itojun Hagino brought a big patch that brings IPv6-awareness to
+  a bunch of different areas within libcurl.
+
+- Robert Weaver told me about the problems the MS VC++ 6.0 compiler has with
+  the 'static' keyword on a number of libcurl functions. I might need to add a
+  patch that redefines static when libcurl is compiled with that compiler.
+  How do I know when VC++ compiles, anyone?
+
+Daniel (4 February 2001)
+- curl_getinfo() was extended with two new options:
+  CURLINFO_CONTENT_LENGTH_DOWNLOAD and CURLINFO_CONTENT_LENGTH_UPLOAD. They
+  return the full assumed content length of the transfer in the given
+  direction. The CURLINFO_CONTENT_LENGTH_DOWNLOAD will be the Content-Length:
+  size of a HTTP download. Added descriptions to the man page as well. This
+  was done after discussions with Bob Schader.
+
+Daniel (3 February 2001)
+- Ingo Ralf Blum provided another fix that makes curl build under the more
+  recent cygwin installations. It seems they've changed the preset defines to
+  not include WIN32 anymore.
+
+Version 7.6.1-pre2
+
 Daniel (31 January 2001)
 - Curl_read() and curl_read() now return a ssize_t for the size, as it had to
-  be able to return -1. The telnet support crashed due to this and there was
-  a possibility to weird behaviour all over.
+  be able to return -1. The telnet support crashed due to this and there was a
+  possibility to weird behaviour all over. Linus Nielsen Feltzing helped me
+  find this.
 
 - Added a configure.in check for a working getaddrinfo() if IPv6 is requested.
   I also made the configure script feature --enable-debug which sets a couple

acconfig.h

@@ -39,3 +39,7 @@
 
 /* Define if you want to enable IPv6 support */
 #undef ENABLE_IPV6
+
+/* Define this to 'int' if ssize_t is not an available typedefed type */
+#undef ssize_t
+

config-win32.h

@@ -23,6 +23,9 @@
 /* Define to `unsigned' if <sys/types.h> doesn't define.  */
 /* #undef size_t */
 
+/* Define this to 'int' if ssize_t is not an available typedefed type */
+#define ssize_t int
+
 /* Define if you have the ANSI C header files.  */
 #define STDC_HEADERS 1
 

configure.in

@@ -53,15 +53,9 @@ dnl
 AC_DEFUN(CURL_CHECK_WORKING_GETADDRINFO,[
   AC_CACHE_CHECK(for working getaddrinfo, ac_cv_working_getaddrinfo,[
   AC_TRY_RUN( [
-#ifdef HAVE_NETDB_H
 #include <netdb.h>
-#endif
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
+#include <sys/types.h>
 #include <sys/socket.h>
-#endif
 
 void main(void) {
     struct addrinfo hints, *ai;
@@ -434,6 +428,10 @@ AC_MSG_CHECKING([if Kerberos4 support is requested])
 
 if test "$want_krb4" = yes
 then
+  if test "$ipv6" = "yes"; then
+    echo krb4 is not compatible with IPv6
+    exit 1
+  fi
   AC_MSG_RESULT(yes)
 
   dnl Check for & handle argument to --with-krb4
@@ -661,6 +659,9 @@ AC_CHECK_SIZEOF(long double, 8)
 # check for 'long long'
 AC_CHECK_SIZEOF(long long, 4)
 
+# check for ssize_t
+AC_CHECK_TYPE(ssize_t, int)
+
 dnl Get system canonical name
 AC_CANONICAL_HOST
 AC_DEFINE_UNQUOTED(OS, "${host}")
@@ -691,7 +692,8 @@ AC_CHECK_FUNCS( socket \
                 setvbuf \
                 sigaction \
                 signal \
-                getpass_r
+                getpass_r \
+                strlcat
 )
 
 dnl removed 'getpass' check on October 26, 2000

docs/FAQ

@@ -1,4 +1,4 @@
-Updated: January 29, 2001 (http://curl.haxx.se/docs/faq.shtml)
+Updated: February 2, 2001 (http://curl.haxx.se/docs/faq.shtml)
                                   _   _ ____  _     
                               ___| | | |  _ \| |    
                              / __| | | | |_) | |    
@@ -53,7 +53,7 @@ FAQ
   5.2 How can I receive all data into a large memory chunk?
   5.3 How do I fetch multiple files with libcurl?
   5.4 Does libcurl do Winsock initing on win32 systems?
-  5.5 Does CURLOPT_FILE work on win32 ?
+  5.5 Does CURLOPT_FILE and CURLOPT_INFILE work on win32 ?
   5.6 What about Keep-Alive or persistant connections?
 
  6. License Issues
@@ -491,14 +491,15 @@ FAQ
   use several different libraries and parts, and there's no reason for every
   single library to do this.
 
-  5.5 Does CURLOPT_FILE work on win32 ?
+  5.5 Does CURLOPT_FILE and CURLOPT_INFILE work on win32 ?
 
   Yes, but you cannot open a FILE * and pass the pointer to a DLL and have
-  that DLL use the FILE *. You must use CURLOPT_WRITEFUNCTION as well to set a
-  function that writes the file, even if that simply writes the data to the
-  specified FILE*.
+  that DLL use the FILE *. If you set CURLOPT_FILE you must also use
+  CURLOPT_WRITEFUNCTION as well to set a function that writes the file, even
+  if that simply writes the data to the specified FILE*. Similarly, if you use
+  CURLOPT_INFILE you must also specify CURLOPT_READFUNCTION.
 
-  (provided by Joel DeYoung)
+  (Provided by Joel DeYoung and Bob Schader)
 
   5.6 What about Keep-Alive or persistant connections?
 

docs/INSTALL

@@ -84,9 +84,10 @@ UNIX
 
    KNOWN PROBLEMS
 
-     If you happen to have autoconf installed, but a version older than
-     2.12 you will get into trouble. Then you can still build curl by
-     issuing these commands: (from Ralph Beckmann)
+     If you happen to have autoconf installed, but a version older than 2.12
+     you will get into trouble. Then you can still build curl by issuing these
+     commands (note that this requires curl to be built staticly): (from Ralph
+     Beckmann)
 
        ./configure [...]
        cd lib; make; cd ..
@@ -139,6 +140,14 @@ UNIX
 
        ./configure --with-krb4=/usr/athena
 
+     If your system support shared libraries, but you want to built a static
+     version only, you can disable building the shared version by using:
+
+       ./configure --disable-shared
+
+     If you're a curl developer and use gcc, you might want to enable more
+     debug options with the --enable-debug option.
+
 Win32
 =====
  

docs/MANUAL

@@ -726,6 +726,25 @@ KERBEROS4 FTP TRANSFER
   There's no use for a password on the -u switch, but a blank one will make
   curl ask for one and you already entered the real password to kauth.
 
+TELNET
+
+  The curl telnet support is basic and very easy to use. Curl passes all data
+  passed to it on stdin to the remote server. Connect to a remote telnet
+  server using a command line similar to:
+
+        curl telnet://remote.server.com
+
+  And enter the data to pass to the server on stdin. The result will be sent
+  to stdout or to the file you specify with -o.
+
+  You might want the -N/--no-buffer option to switch off the buffered output
+  for slow connections or similar.
+
+  NOTE: the telnet protocol does not specify any way to login with a specified
+  user and password so curl can't do that automatically. To do that, you need
+  to track when the login prompt is received and send the username and
+  password accordingly.
+
 MAILING LIST
 
   We have an open mailing list to discuss curl, its development and things

docs/curl.1

@@ -788,6 +788,7 @@ If you do find bugs, mail them to curl-bug@haxx.se.
  - Loic Dachary <loic@senga.org>
  - Robert Weaver <robert.weaver@sabre.com>
  - Ingo Ralf Blum <ingoralfblum@ingoralfblum.com>
+ - Jun-ichiro itojun Hagino <itojun@iijlab.net>
 
 .SH WWW
 http://curl.haxx.se

docs/curl_easy_getinfo.3

@@ -2,7 +2,7 @@
 .\" nroff -man [file]
 .\" Written by daniel@haxx.se
 .\"
-.TH curl_easy_init 3 "22 November 2000" "Curl 7.5" "libcurl Manual"
+.TH curl_easy_init 3 "4 February 2001" "Curl 7.6.1" "libcurl Manual"
 .SH NAME
 curl_easy_getinfo - Extract information from a curl session (added in 7.4)
 .SH SYNOPSIS
@@ -81,6 +81,14 @@ than one request if FOLLOWLOCATION is true.
 Pass a pointer to a long to receive the result of the certification
 verification that was requested (using the CURLOPT_SSL_VERIFYPEER option to
 curl_easy_setopt). (Added in 7.4.2)
+.TP
+.B CURLINFO_CONTENT_LENGTH_DOWNLOAD
+Pass a pointer to a double to receive the content-length of the download.
+(Added in 7.6.1)
+.TP
+.B CURLINFO_CONTENT_LENGTH_UPLOAD
+Pass a pointer to a double to receive the specified size of the upload.
+(Added in 7.6.1)
 .PP
 
 .SH RETURN VALUE

docs/curl_easy_setopt.3

@@ -2,7 +2,7 @@
 .\" nroff -man [file]
 .\" Written by daniel@haxx.se
 .\"
-.TH curl_easy_setopt 3 "28 November 2000" "Curl 7.5" "libcurl Manual"
+.TH curl_easy_setopt 3 "2 February 2001" "Curl 7.5" "libcurl Manual"
 .SH NAME
 curl_easy_setopt - Set curl easy-session options
 .SH SYNOPSIS
@@ -35,6 +35,12 @@ Data pointer to pass instead of FILE * to the file write function. Note that
 if you specify the
 .I CURLOPT_WRITEFUNCTION
 , this is the pointer you'll get as input.
+
+NOTE: If you're using libcurl as a win32 .DLL, you MUST use a
+.I CURLOPT_WRITEFUNCTION
+if you set the
+.I CURLOPT_FILE
+option.
 .TP
 .B CURLOPT_WRITEFUNCTION
 Function pointer that should use match the following prototype:
@@ -53,6 +59,12 @@ Data pointer to pass instead of FILE * to the file read function. Note that if
 you specify the
 .I CURLOPT_READFUNCTION
 , this is the pointer you'll get as input.
+
+NOTE: If you're using libcurl as a win32 .DLL, you MUST use a
+.I CURLOPT_READFUNCTION
+if you set the
+.I CURLOPT_INFILE
+option.
 .TP
 .B CURLOPT_READFUNCTION
 Function pointer that should use match the following prototype:

include/curl/curl.h

@@ -452,7 +452,7 @@ char *curl_getenv(char *variable);
 char *curl_version(void);
 
 /* This is the version number */
-#define LIBCURL_VERSION "7.6.1-pre2"
+#define LIBCURL_VERSION "7.6.1-pre3"
 #define LIBCURL_VERSION_NUM 0x070601
 
 /* linked-list structure for the CURLOPT_QUOTE option (and other) */
@@ -676,7 +676,10 @@ typedef enum {
   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
 
-  CURLINFO_LASTONE          = 15
+  CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
+  CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
+
+  CURLINFO_LASTONE          = 17
 } CURLINFO;
 
 /*

lib/ftp.c

@@ -282,6 +282,8 @@ int Curl_GetFTPResponse(int sockfd, char *buf,
          */
         if(CURLE_OK != Curl_read(conn, sockfd, ptr, 1, &keepon))
           keepon = FALSE;
+        else if(keepon < 0)
+          error = SELECT_ERROR;
         else if ((*ptr == '\n') || (*ptr == '\r'))
           keepon = FALSE;
       }
@@ -564,6 +566,9 @@ CURLcode _ftp(struct connectdata *conn)
 #if defined (HAVE_INET_NTOA_R)
   char ntoa_buf[64];
 #endif
+#ifdef ENABLE_IPV6
+  struct addrinfo *ai;
+#endif
 
   struct curl_slist *qitem; /* QUOTE item */
   /* the ftp struct is already inited in ftp_connect() */
@@ -702,6 +707,178 @@ CURLcode _ftp(struct connectdata *conn)
 
   /* We have chosen to use the PORT command */
   if(data->bits.ftp_use_port) {
+#ifdef ENABLE_IPV6
+    struct addrinfo hints, *res, *ai;
+    struct sockaddr_storage ss;
+    int sslen;
+    char hbuf[NI_MAXHOST];
+    char *localaddr;
+    struct sockaddr *sa=(struct sockaddr *)&ss;
+#ifdef NI_WITHSCOPEID
+    const int niflags = NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID;
+#else
+    const int niflags = NI_NUMERICHOST | NI_NUMERICSERV;
+#endif
+    unsigned char *ap;
+    unsigned char *pp;
+    int alen, plen;
+    char portmsgbuf[4096], tmp[4096];
+    char *p;
+    char *mode[] = { "EPRT", "LPRT", "PORT", NULL };
+    char **modep;
+
+    /*
+     * we should use Curl_if2ip?  given pickiness of recent ftpd,
+     * I believe we should use the same address as the control connection.
+     */
+    sslen = sizeof(ss);
+    if (getsockname(data->firstsocket, (struct sockaddr *)&ss, &sslen) < 0)
+      return CURLE_FTP_PORT_FAILED;
+
+    if (getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf), NULL, 0,
+	niflags))
+      return CURLE_FTP_PORT_FAILED;
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = sa->sa_family;
+    /*hints.ai_family = ss.ss_family;
+      this way can be used if sockaddr_storage is properly defined, as glibc 
+      2.1.X doesn't do*/
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = AI_PASSIVE;
+    if (getaddrinfo(hbuf, "0", &hints, &res))
+      return CURLE_FTP_PORT_FAILED;
+
+    portsock = -1;
+    for (ai = res; ai; ai = ai->ai_next) {
+      portsock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+      if (portsock < 0)
+	continue;
+
+      if (bind(portsock, ai->ai_addr, ai->ai_addrlen) < 0) {
+	close(portsock);
+	portsock = -1;
+	continue;
+      }
+
+      if (listen(portsock, 1) < 0) {
+	close(portsock);
+	portsock = -1;
+	continue;
+      }
+
+      break;
+    }
+    if (portsock < 0) {
+      failf(data, strerror(errno));
+      freeaddrinfo(res);
+      return CURLE_FTP_PORT_FAILED;
+    }
+
+    sslen = sizeof(ss);
+    if (getsockname(portsock, sa, &sslen) < 0) {
+      failf(data, strerror(errno));
+      freeaddrinfo(res);
+      return CURLE_FTP_PORT_FAILED;
+    }
+
+    for (modep = mode; modep && *modep; modep++) {
+      int lprtaf, eprtaf;
+
+      switch (sa->sa_family) {
+      case AF_INET:
+	ap = (char *)&((struct sockaddr_in *)&ss)->sin_addr;
+	alen = sizeof(((struct sockaddr_in *)&ss)->sin_addr);
+	pp = (char *)&((struct sockaddr_in *)&ss)->sin_port;
+	plen = sizeof(((struct sockaddr_in *)&ss)->sin_port);
+	lprtaf = 4;
+	eprtaf = 1;
+	break;
+      case AF_INET6:
+	ap = (char *)&((struct sockaddr_in6 *)&ss)->sin6_addr;
+	alen = sizeof(((struct sockaddr_in6 *)&ss)->sin6_addr);
+	pp = (char *)&((struct sockaddr_in6 *)&ss)->sin6_port;
+	plen = sizeof(((struct sockaddr_in6 *)&ss)->sin6_port);
+	lprtaf = 6;
+	eprtaf = 2;
+	break;
+      default:
+	ap = pp = NULL;
+	lprtaf = eprtaf = -1;
+	break;
+      }
+
+      if (strcmp(*modep, "EPRT") == 0) {
+	if (eprtaf < 0)
+	  continue;
+	if (getnameinfo((struct sockaddr *)&ss, sslen,
+	    portmsgbuf, sizeof(portmsgbuf), tmp, sizeof(tmp), niflags))
+	  continue;
+	/* do not transmit IPv6 scope identifier to the wire */
+	if (sa->sa_family == AF_INET6) {
+	  char *q = strchr(portmsgbuf, '%');
+	  if (q)
+	    *q = '\0';
+	}
+	ftpsendf(data->firstsocket, conn, "%s |%d|%s|%s|", *modep, eprtaf,
+	    portmsgbuf, tmp);
+      } else if (strcmp(*modep, "LPRT") == 0 || strcmp(*modep, "PORT") == 0) {
+	int i;
+
+        if (strcmp(*modep, "LPRT") == 0 && lprtaf < 0)
+	  continue;
+        if (strcmp(*modep, "PORT") == 0 && sa->sa_family != AF_INET)
+	  continue;
+
+	portmsgbuf[0] = '\0';
+        if (strcmp(*modep, "LPRT") == 0) {
+	  snprintf(tmp, sizeof(tmp), "%d,%d", lprtaf, alen);
+	  if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >= sizeof(portmsgbuf)) {
+	    goto again;
+	  }
+	}
+	for (i = 0; i < alen; i++) {
+	  if (portmsgbuf[0])
+	    snprintf(tmp, sizeof(tmp), ",%u", ap[i]);
+	  else
+	    snprintf(tmp, sizeof(tmp), "%u", ap[i]);
+	  if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >= sizeof(portmsgbuf)) {
+	    goto again;
+	  }
+	}
+        if (strcmp(*modep, "LPRT") == 0) {
+	  snprintf(tmp, sizeof(tmp), ",%d", plen);
+	  if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >= sizeof(portmsgbuf))
+	    goto again;
+	}
+	for (i = 0; i < plen; i++) {
+	  snprintf(tmp, sizeof(tmp), ",%u", pp[i]);
+	  if (strlcat(portmsgbuf, tmp, sizeof(portmsgbuf)) >= sizeof(portmsgbuf)) {
+	    goto again;
+	  }
+	}
+	ftpsendf(data->firstsocket, conn, "%s %s", *modep, portmsgbuf);
+      }
+
+      nread = Curl_GetFTPResponse(data->firstsocket, buf, conn, &ftpcode);
+      if (nread < 0)
+	return CURLE_OPERATION_TIMEOUTED;
+
+      if (ftpcode != 200) {
+	failf(data, "Server does not grok %s", *modep);
+	continue;
+      } else
+	      break;
+again:;
+    }
+
+    if (!*modep) {
+      close(portsock);
+      freeaddrinfo(res);
+      return CURLE_FTP_PORT_FAILED;
+    }
+
+#else
     struct sockaddr_in sa;
     struct hostent *h=NULL;
     char *hostdataptr=NULL;
@@ -809,26 +986,43 @@ CURLcode _ftp(struct connectdata *conn)
       failf(data, "Server does not grok PORT, try without it!");
       return CURLE_FTP_PORT_FAILED;
     }     
+#endif /* ENABLE_IPV6 */
   }
   else { /* we use the PASV command */
+#if 0
+    char *mode[] = { "EPSV", "LPSV", "PASV", NULL };
+    int results[] = { 229, 228, 227, 0 };
+#else
+    char *mode[] = { "PASV", NULL };
+    int results[] = { 227, 0 };
+#endif
+    int modeoff;
 
-    ftpsendf(data->firstsocket, conn, "PASV");
+    for (modeoff = 0; mode[modeoff]; modeoff++) {
+      ftpsendf(data->firstsocket, conn, mode[modeoff]);
+      nread = Curl_GetFTPResponse(data->firstsocket, buf, conn, &ftpcode);
+      if(nread < 0)
+	return CURLE_OPERATION_TIMEOUTED;
 
-    nread = Curl_GetFTPResponse(data->firstsocket, buf, conn, &ftpcode);
-    if(nread < 0)
-      return CURLE_OPERATION_TIMEOUTED;
+      if (ftpcode == results[modeoff])
+	break;
+    }
 
-    if(ftpcode != 227) {
+    if (!mode[modeoff]) {
       failf(data, "Odd return code after PASV");
       return CURLE_FTP_WEIRD_PASV_REPLY;
     }
-    else {
+    else if (strcmp(mode[modeoff], "PASV") == 0) {
       int ip[4];
       int port[2];
       unsigned short newport; /* remote port, not necessary the local one */
       unsigned short connectport; /* the local port connect() should use! */
       char newhost[32];
+#ifdef ENABLE_IPV6
+      struct addrinfo *res;
+#else
       struct hostent *he;
+#endif
       char *str=buf,*ip_addr;
       char *hostdataptr=NULL;
 
@@ -863,20 +1057,78 @@ CURLcode _ftp(struct connectdata *conn)
          * proxy again here. We already have the name info for it since the
          * previous lookup.
          */
+#ifdef ENABLE_IPV6
+        res = conn->res;
+#else
         he = conn->hp;
+#endif
         connectport =
           (unsigned short)data->port; /* we connect to the proxy's port */
       }
       else {
         /* normal, direct, ftp connection */
+#ifdef ENABLE_IPV6
+        res = Curl_getaddrinfo(data, newhost, newport);
+        if(!res)
+#else
         he = Curl_gethost(data, newhost, &hostdataptr);
-        if(!he) {
+        if(!he)
+#endif
+        {
           failf(data, "Can't resolve new host %s", newhost);
           return CURLE_FTP_CANT_GET_HOST;
         }
         connectport = newport; /* we connect to the remote port */
       }
 	
+#ifdef ENABLE_IPV6
+      data->secondarysocket = -1;
+      for (ai = res; ai; ai = ai->ai_next) {
+	/* XXX for now, we can do IPv4 only */
+	if (ai->ai_family != AF_INET)
+	  continue;
+
+	data->secondarysocket = socket(ai->ai_family, ai->ai_socktype,
+	    ai->ai_protocol);
+	if (data->secondarysocket < 0)
+	  continue;
+
+	if(data->bits.verbose) {
+	  char hbuf[NI_MAXHOST];
+	  char nbuf[NI_MAXHOST];
+	  char sbuf[NI_MAXSERV];
+#ifdef NI_WITHSCOPEID
+	  const int niflags = NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID;
+#else
+	  const int niflags = NI_NUMERICHOST | NI_NUMERICSERV;
+#endif
+	  if (getnameinfo(res->ai_addr, res->ai_addrlen, nbuf, sizeof(nbuf),
+	      sbuf, sizeof(sbuf), niflags)) {
+	    snprintf(nbuf, sizeof(nbuf), "?");
+	    snprintf(sbuf, sizeof(sbuf), "?");
+	  }
+	  if (getnameinfo(res->ai_addr, res->ai_addrlen, hbuf, sizeof(hbuf),
+	      NULL, 0, 0)) {
+	    infof(data, "Connecting to %s port %s\n", nbuf, sbuf);
+	  } else {
+	    infof(data, "Connecting to %s (%s) port %s\n", hbuf, nbuf, sbuf);
+	  }
+	}
+
+	if (connect(data->secondarysocket, ai->ai_addr, ai->ai_addrlen) < 0) {
+	  close(data->secondarysocket);
+	  data->secondarysocket = -1;
+	  continue;
+	}
+
+	break;
+      }
+
+      if (data->secondarysocket < 0) {
+	failf(data, strerror(errno));
+        return CURLE_FTP_CANT_RECONNECT;
+      }
+#else
       data->secondarysocket = socket(AF_INET, SOCK_STREAM, 0);
 
       memset((char *) &serv_addr, '\0', sizeof(serv_addr));
@@ -971,6 +1223,7 @@ CURLcode _ftp(struct connectdata *conn)
         }
         return CURLE_FTP_CANT_RECONNECT;
       }
+#endif /*ENABLE_IPV6*/
 
       if (data->bits.tunnel_thru_httpproxy) {
         /* We want "seamless" FTP operations through HTTP proxy tunnel */
@@ -979,6 +1232,8 @@ CURLcode _ftp(struct connectdata *conn)
         if(CURLE_OK != result)
           return result;
       }
+    } else {
+      return CURLE_FTP_CANT_RECONNECT;
     }
   }
   /* we have the (new) data connection ready */

lib/getinfo.c

@@ -103,6 +103,12 @@ CURLcode curl_getinfo(CURL *curl, CURLINFO info, ...)
   case CURLINFO_SSL_VERIFYRESULT:
     *param_longp = data->ssl.certverifyresult;
     break;
+  case CURLINFO_CONTENT_LENGTH_DOWNLOAD:
+    *param_doublep = data->progress.size_dl;
+    break;
+  case CURLINFO_CONTENT_LENGTH_UPLOAD:
+    *param_doublep = data->progress.size_ul;
+    break;
   default:
     return CURLE_BAD_FUNCTION_ARGUMENT;
   }

lib/hostip.c

@@ -83,6 +83,29 @@ static char *MakeIP(unsigned long num,char *addr, int addr_len)
   return (addr);
 }
 
+#ifdef ENABLE_IPV6
+struct addrinfo *Curl_getaddrinfo(struct UrlData *data,
+			       char *hostname,
+			       int port)
+{
+  struct addrinfo hints, *res;
+  int error;
+  char sbuf[NI_MAXSERV];
+
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = PF_UNSPEC;
+  hints.ai_socktype = SOCK_STREAM;
+  hints.ai_flags = AI_CANONNAME;
+  snprintf(sbuf, sizeof(sbuf), "%d", port);
+  error = getaddrinfo(hostname, sbuf, &hints, &res);
+  if (error) {
+    infof(data, "getaddrinfo(3) failed for %s\n", hostname);
+    return NULL;
+  }
+  return res;
+}
+#endif
+
 /* The original code to this function was once stolen from the Dancer source
    code, written by Bjorn Reese, it has since been patched and modified
    considerably. */

lib/hostip.h

@@ -23,6 +23,11 @@
  * $Id$
  *****************************************************************************/
 
+struct addrinfo;
+struct addrinfo *Curl_getaddrinfo(struct UrlData *data,
+                             char *hostname,
+                             int port);
+
 struct hostent *Curl_gethost(struct UrlData *data,
                              char *hostname,
                              char **bufp);

lib/http.c

@@ -226,17 +226,18 @@ int GetLine(int sockfd, char *buf, struct connectdata *conn)
       (nread<BUFSIZE) && read_rc;
       nread++, ptr++) {
     if((CURLE_OK != Curl_read(conn, sockfd, ptr, 1, &nread)) ||
+       (nread <= 0) ||
        (*ptr == '\n'))
       break;
   }
   *ptr=0; /* zero terminate */
-
+  
   if(data->bits.verbose) {
     fputs("< ", data->err);
     fwrite(buf, 1, nread, data->err);
     fputs("\n", data->err);
   }
-  return nread;
+  return nread>0?nread:0;
 }
 
 

lib/if2ip.h

@@ -24,7 +24,7 @@
  *****************************************************************************/
 #include "setup.h"
 
-#if ! defined(WIN32) && ! defined(__BEOS__)
+#if ! defined(WIN32) && ! defined(__BEOS__) && !defined(__CYGWIN32__)
 extern char *Curl_if2ip(char *interface, char *buf, int buf_size);
 #else
 #define Curl_if2ip(a,b,c) NULL

lib/netrc.c

@@ -27,7 +27,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "getenv.h"
+#include <curl/curl.h>
+
 #include "strequal.h"
 
 /* Debug this single source file with:

lib/strequal.c

@@ -66,3 +66,44 @@ int Curl_strnequal(const char *first, const char *second, size_t max)
 #endif
 }
 
+#ifndef HAVE_STRLCAT
+/*
+ * The strlcat() function appends the NUL-terminated string src to the end
+ * of dst. It will append at most size - strlen(dst) - 1 bytes, NUL-termi-
+ * nating the result.
+ *
+ * The strlcpy() and strlcat() functions return the total length of the
+ * string they tried to create.  For strlcpy() that means the length of src.
+ * For strlcat() that means the initial length of dst plus the length of
+ * src. While this may seem somewhat confusing it was done to make trunca-
+ * tion detection simple.
+ *
+ * 
+ */
+size_t strlcat(char *dst, const char *src, size_t siz)
+{
+  char *d = dst;
+  const char *s = src;
+  size_t n = siz;
+  size_t dlen;
+
+  /* Find the end of dst and adjust bytes left but don't go past end */
+  while (n-- != 0 && *d != '\0')
+    d++;
+  dlen = d - dst;
+  n = siz - dlen;
+
+  if (n == 0)
+    return(dlen + strlen(s));
+  while (*s != '\0') {
+    if (n != 1) {
+      *d++ = *s;
+      n--;
+    }
+    s++;
+  }
+  *d = '\0';
+
+  return(dlen + (s - src));	/* count does not include NUL */
+}
+#endif

lib/transfer.c

@@ -82,7 +82,6 @@
 #include <curl/types.h>
 #include "netrc.h"
 
-#include "getenv.h"
 #include "hostip.h"
 #include "transfer.h"
 #include "sendf.h"

lib/url.c

@@ -80,7 +80,6 @@
 #include "netrc.h"
 
 #include "formdata.h"
-#include "getenv.h"
 #include "base64.h"
 #include "ssluse.h"
 #include "hostip.h"
@@ -562,8 +561,13 @@ CURLcode curl_disconnect(CURLconnect *c_connect)
 
   struct UrlData *data = conn->data;
 
+#ifdef ENABLE_IPV6
+  if(conn->res) /* host name info */
+    freeaddrinfo(conn->res);
+#else
   if(conn->hostent_buf) /* host name info */
     free(conn->hostent_buf);
+#endif
 
   if(conn->path) /* the URL path part */
     free(conn->path);
@@ -589,6 +593,9 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
   struct sigaction sigact;
 #endif
   int urllen;
+#ifdef ENABLE_IPV6
+  struct addrinfo *ai;
+#endif
 
   /*************************************************************
    * Check input data
@@ -1189,13 +1196,23 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
     data->port =  data->remote_port; /* it is the same port */
 
     /* Connect to target host right on */
+#ifdef ENABLE_IPV6
+    conn->res = Curl_getaddrinfo(data, conn->name, data->port);
+    if(!conn->res)
+#else
     conn->hp = Curl_gethost(data, conn->name, &conn->hostent_buf);
-    if(!conn->hp) {
+    if(!conn->hp)
+#endif
+    {
       failf(data, "Couldn't resolve host '%s'", conn->name);
       return CURLE_COULDNT_RESOLVE_HOST;
     }
   }
   else {
+#ifdef ENABLE_IPV6
+    failf(data, "proxy yet to be supported");
+    return CURLE_OUT_OF_MEMORY;
+#else
     char *prox_portno;
     char *endofprot;
 
@@ -1244,9 +1261,11 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
     }
 
     free(proxydup); /* free the duplicate pointer and not the modified */
+#endif
   }
   Curl_pgrsTime(data, TIMER_NAMELOOKUP);
 
+#ifndef ENABLE_IPV6
   data->firstsocket = socket(AF_INET, SOCK_STREAM, 0);
 
   memset((char *) &conn->serv_addr, '\0', sizeof(conn->serv_addr));
@@ -1254,6 +1273,7 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
          conn->hp->h_addr, conn->hp->h_length);
   conn->serv_addr.sin_family = conn->hp->h_addrtype;
   conn->serv_addr.sin_port = htons(data->port);
+#endif
 
 #if !defined(WIN32)||defined(__CYGWIN32__)
   /* We don't generally like checking for OS-versions, we should make this
@@ -1266,6 +1286,7 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
 #define INADDR_NONE (unsigned long) ~0
 #endif
 
+#ifndef ENABLE_IPV6
   /*************************************************************
    * Select device to bind socket to
    *************************************************************/
@@ -1374,10 +1395,31 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
   } /* end of device selection support */
 #endif  /* end of HAVE_INET_NTOA */
 #endif /* end of not WIN32 */
+#endif /*ENABLE_IPV6*/
 
   /*************************************************************
    * Connect to server/proxy
    *************************************************************/
+#ifdef ENABLE_IPV6
+  data->firstsocket = -1;
+  for (ai = conn->res; ai; ai = ai->ai_next) {
+    data->firstsocket = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+    if (data->firstsocket < 0)
+      continue;
+
+    if (connect(data->firstsocket, ai->ai_addr, ai->ai_addrlen) < 0) {
+      close(data->firstsocket);
+      data->firstsocket = -1;
+      continue;
+    }
+
+    break;
+  }
+  if (data->firstsocket < 0) {
+    failf(data, strerror(errno));
+    return CURLE_COULDNT_CONNECT;
+  }
+#else
   if (connect(data->firstsocket,
               (struct sockaddr *) &(conn->serv_addr),
               sizeof(conn->serv_addr)
@@ -1426,6 +1468,7 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
     }
     return CURLE_COULDNT_CONNECT;
   }
+#endif
 
   /*************************************************************
    * Proxy authentication
@@ -1473,11 +1516,31 @@ static CURLcode _connect(CURL *curl, CURLconnect **in_connect)
   conn->bytecount = 0;
   
   /* Figure out the ip-number and display the first host name it shows: */
+#ifdef ENABLE_IPV6
+  {
+    char hbuf[NI_MAXHOST];
+#ifdef NI_WITHSCOPEID
+    const int niflags = NI_NUMERICHOST | NI_WITHSCOPEID;
+#else
+    const int niflags = NI_NUMERICHOST;
+#endif
+    if (getnameinfo(ai->ai_addr, ai->ai_addrlen, hbuf, sizeof(hbuf), NULL, 0,
+	niflags)) {
+      snprintf(hbuf, sizeof(hbuf), "?");
+    }
+    if (ai->ai_canonname) {
+      infof(data, "Connected to %s (%s)\n", ai->ai_canonname, hbuf);
+    } else {
+      infof(data, "Connected to %s\n", hbuf);
+    }
+  }
+#else
   {
     struct in_addr in;
     (void) memcpy(&in.s_addr, *conn->hp->h_addr_list, sizeof (in.s_addr));
     infof(data, "Connected to %s (%s)\n", conn->hp->h_name, inet_ntoa(in));
   }
+#endif
 
 #ifdef __EMX__
   /* 20000330 mgs
@@ -1509,8 +1572,13 @@ CURLcode curl_connect(CURL *curl, CURLconnect **in_connect)
     if(conn) {
       if(conn->path)
         free(conn->path);
+#ifdef ENABLE_IPV6
+      if(conn->res)
+        freeaddrinfo(conn->res);
+#else
       if(conn->hostent_buf)
         free(conn->hostent_buf);
+#endif
       free(conn);
       *in_connect=NULL;
     }

lib/urldata.h

@@ -159,9 +159,13 @@ struct connectdata {
 #define PROT_LDAP    (1<<7)
 #define PROT_FILE    (1<<8)
 
+#ifdef ENABLE_IPV6
+  struct addrinfo *res;
+#else
   char *hostent_buf; /* pointer to allocated memory for name info */
   struct hostent *hp;
   struct sockaddr_in serv_addr;
+#endif
   char proto[64];  /* store the protocol string in this buffer */
   char gname[257]; /* store the hostname in this buffer */
   char *name;      /* host name pointer to fool around with */

src/Makefile.vc6

@@ -17,7 +17,7 @@ LINKR = link.exe /incremental:no /libpath:"../lib"
 
 ## Debug
 CCD = cl.exe /MDd /Gm /ZI /Od /D "_DEBUG" /GZ
-LINKD = link.exe /incremental:yes /debug
+LINKD = link.exe /incremental:yes /debug /libpath:"../lib"
 
 CFLAGS = /I "../include" /nologo /W3 /GX /D "WIN32" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
 LFLAGS = /nologo /out:$(PROGRAM_NAME) /subsystem:console /machine:I386

src/version.h

@@ -1,3 +1,3 @@
 #define CURL_NAME "curl"
-#define CURL_VERSION "7.6.1-pre2"
+#define CURL_VERSION "7.6.1-pre3"
 #define CURL_ID CURL_NAME " " CURL_VERSION " (" OS ") "