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6901206927
re: https://github.com/Unidata/netcdf-c/issues/1827 The issue is partly resolved by this PR. The proximate problem appears to be that the semantics of mkstemp in **nix is different than the semantics of _mktemp_s in Windows. I had thought they were the same but that is incorrect. The _mktemp_s function will only produce 26 different files and so the netcdf temp file code will fail after about that many iterations. So, to solve this, I created my own version of mkstemp for windows that uses a random number generator. This appears to solve the reported issue. I also added the testcase ncdap_test/test_manyurls but made it conditional on --enable-dap-long-tests because it is very slow. I did note that the provided test program now fails after some 800 iterations with a libcurl error claiming it cannot resolve the host name. My belief is that the library is just running out of resources at this point: too many open curl handles or some such. I doubt if this failure is fixable. So bottom line is that it is really important to do nc_close when you are finished with a file. Misc. Other Changes: 1. I took the opportunity to clean up some bad string hacks in the code. Specifically * change all uses of strncat to strlcat * remove old string hacks: occoncat and occopycat 2. Add heck to see if test.opendap.org is running and if not, then skip test 3. Make CYGWIN use TEMP environment variable
124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/*
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Copyright (c) 1998-2018 University Corporation for Atmospheric Research/Unidata
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See LICENSE.txt for license information.
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*/
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#include "config.h"
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#include "ncdispatch.h"
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#include "ncuri.h"
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#include "nclog.h"
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#include "ncbytes.h"
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#include "ncrc.h"
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#include "ncoffsets.h"
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#include "ncpathmgr.h"
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/* Required for getcwd, other functions. */
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Required for getcwd, other functions. */
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#ifdef _WIN32
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#include <direct.h>
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#endif
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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#include <curl/curl.h>
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#endif
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/* Define vectors of zeros and ones for use with various nc_get_varX functions */
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/* Note, this form of initialization fails under Cygwin */
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size_t NC_coord_zero[NC_MAX_VAR_DIMS] = {0};
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size_t NC_coord_one[NC_MAX_VAR_DIMS] = {1};
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ptrdiff_t NC_stride_one[NC_MAX_VAR_DIMS] = {1};
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/*
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static nc_type longtype = (sizeof(long) == sizeof(int)?NC_INT:NC_INT64);
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static nc_type ulongtype = (sizeof(unsigned long) == sizeof(unsigned int)?NC_UINT:NC_UINT64);
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*/
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/* Allow dispatch to do general initialization and finalization */
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int
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NCDISPATCH_initialize(void)
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{
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int status = NC_NOERR;
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int i;
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NCRCglobalstate* globalstate = NULL;
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for(i=0;i<NC_MAX_VAR_DIMS;i++) {
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NC_coord_zero[i] = 0;
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NC_coord_one[i] = 1;
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NC_stride_one[i] = 1;
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}
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globalstate = ncrc_getglobalstate(); /* will allocate and clear */
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/* Capture temp dir*/
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{
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char* tempdir = NULL;
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#if defined _WIN32 || defined __MSYS__ || defined __CYGWIN__
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tempdir = getenv("TEMP");
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#else
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tempdir = "/tmp";
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#endif
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if(tempdir == NULL) {
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fprintf(stderr,"Cannot find a temp dir; using ./\n");
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tempdir = ".";
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}
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globalstate->tempdir= strdup(tempdir);
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}
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/* Capture $HOME */
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{
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char* home = getenv("HOME");
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if(home == NULL) {
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/* use tempdir */
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home = globalstate->tempdir;
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}
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globalstate->home = strdup(home);
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}
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/* Capture $CWD */
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{
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char cwdbuf[4096];
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cwdbuf[0] = '\0';
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(void)NCgetcwd(cwdbuf,sizeof(cwdbuf));
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if(strlen(cwdbuf) == 0) {
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/* use tempdir */
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strcpy(cwdbuf, globalstate->tempdir);
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}
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globalstate->cwd = strdup(cwdbuf);
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}
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/* Now load RC File */
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status = NC_rcload();
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ncloginit();
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/* Compute type alignments */
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NC_compute_alignments();
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/* Initialize curl if it is being used */
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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{
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CURLcode cstat = curl_global_init(CURL_GLOBAL_ALL);
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if(cstat != CURLE_OK)
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status = NC_ECURL;
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}
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#endif
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return status;
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}
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int
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NCDISPATCH_finalize(void)
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{
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int status = NC_NOERR;
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ncrc_freeglobalstate();
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#if defined(ENABLE_BYTERANGE) || defined(ENABLE_DAP) || defined(ENABLE_DAP4)
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curl_global_cleanup();
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#endif
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return status;
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}
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