diff --git a/CHANGES b/CHANGES index d188e8485..755c79d2f 100644 --- a/CHANGES +++ b/CHANGES @@ -7,6 +7,16 @@ Changelog +Daniel Fandrich (11 Aug 2008) +- Fixed a boundary condition error in ftp_readresp() whereby a non-terminal + line of a multiline FTP response whose last byte landed exactly at the end + of the BUFSIZE-length buffer would be treated as the terminal response + line. The following response code read in would then actually be the + end of the previous response line, and all responses from then on would + correspond to the wrong command. Test case 1062 verifies this. + +- Stop closing a never-opened ftp socket. + Daniel Stenberg (11 Aug 2008) - Constantine Sapuntzakis filed bug report #2042430 (http://curl.haxx.se/bug/view.cgi?id=2042430) with a patch. "NTLM Windows diff --git a/lib/ftp.c b/lib/ftp.c index 819772b92..d53134d5b 100644 --- a/lib/ftp.c +++ b/lib/ftp.c @@ -388,7 +388,7 @@ static CURLcode ftp_readresp(curl_socket_t sockfd, ssize_t gotbytes; char *ptr; struct SessionHandle *data = conn->data; - char *buf = data->state.buffer; + char * const buf = data->state.buffer; CURLcode result = CURLE_OK; struct ftp_conn *ftpc = &conn->proto.ftpc; int code = 0; @@ -414,6 +414,7 @@ static CURLcode ftp_readresp(curl_socket_t sockfd, * int to begin with, even though its datatype may be larger * than an int. */ + DEBUGASSERT((ptr+ftpc->cache_size) <= (buf+BUFSIZE+1)); memcpy(ptr, ftpc->cache, (int)ftpc->cache_size); gotbytes = (int)ftpc->cache_size; free(ftpc->cache); /* free the cache */ @@ -427,6 +428,7 @@ static CURLcode ftp_readresp(curl_socket_t sockfd, conn->data_prot = 0; #endif + DEBUGASSERT((ptr+BUFSIZE-ftpc->nread_resp) <= (buf+BUFSIZE+1)); res = Curl_read(conn, sockfd, ptr, BUFSIZE-ftpc->nread_resp, &gotbytes); #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI) @@ -535,9 +537,10 @@ static CURLcode ftp_readresp(curl_socket_t sockfd, dash or a space and it is significant */ clipamount = 4; } - else if(perline && (ftpc->nread_resp > BUFSIZE/2)) { - /* We got a large chunk of data and there's still trailing data to - take care of, so we put that part in the "cache" and restart */ + else if(ftpc->nread_resp > BUFSIZE/2) { + /* We got a large chunk of data and there's potentially still trailing + data to take care of, so we put any such part in the "cache", clear + the buffer to make space and restart. */ clipamount = perline; restart = TRUE; } @@ -3224,17 +3227,19 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status, shutdown(conn->sock[SECONDARYSOCKET],2); /* SD_BOTH */ #endif - if(conn->ssl[SECONDARYSOCKET].use) { - /* The secondary socket is using SSL so we must close down that part first - before we close the socket for real */ - Curl_ssl_close(conn, SECONDARYSOCKET); + if(conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD) { + if(conn->ssl[SECONDARYSOCKET].use) { + /* The secondary socket is using SSL so we must close down that part first + before we close the socket for real */ + Curl_ssl_close(conn, SECONDARYSOCKET); - /* Note that we keep "use" set to TRUE since that (next) connection is - still requested to use SSL */ + /* Note that we keep "use" set to TRUE since that (next) connection is + still requested to use SSL */ + } + sclose(conn->sock[SECONDARYSOCKET]); + + conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; } - sclose(conn->sock[SECONDARYSOCKET]); - - conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD; if((ftp->transfer == FTPTRANSFER_BODY) && !status && !premature) { /* diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am index 9a44698ab..f5c48a260 100644 --- a/tests/data/Makefile.am +++ b/tests/data/Makefile.am @@ -55,7 +55,7 @@ EXTRA_DIST = test1 test108 test117 test127 test20 test27 test34 test46 \ test1033 test539 test1034 test1035 test1036 test1037 test1038 test1039 \ test1040 test1041 test1042 test1043 test1044 test1045 test1046 test1047 \ test1048 test1049 test1050 test1051 test1052 test1053 test1054 test1055 \ - test1056 test1057 test1058 test1059 + test1056 test1057 test1058 test1059 test1062 filecheck: @mkdir test-place; \ diff --git a/tests/data/test1062 b/tests/data/test1062 new file mode 100644 index 000000000..d96686e05 --- /dev/null +++ b/tests/data/test1062 @@ -0,0 +1,49 @@ + + + +FTP +RETR +huge response + + + +# Server-side + + +mooo + +# a long set of response strings to CWD to make sure the ftp parser deals +# with it nicely + +REPLY CWD 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Exactly fill curl's buffer\r\n250 Finally, here is the response, boundary condition + + + +# Client-side + + +ftp + + +FTP with excessively long server command response lines, boundary condition + + +ftp://%HOSTIP:%FTPPORT/path/1062 + + + +# Verify data after the test has been "shot" + + +USER anonymous +PASS ftp@example.com +PWD +CWD path +EPSV +TYPE I +SIZE 1062 +RETR 1062 +QUIT + + +