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Diffstat (limited to 'security/nss/lib/base/whatnspr.c')
| -rw-r--r-- | security/nss/lib/base/whatnspr.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/security/nss/lib/base/whatnspr.c b/security/nss/lib/base/whatnspr.c new file mode 100644 index 000000000..5303ec256 --- /dev/null +++ b/security/nss/lib/base/whatnspr.c @@ -0,0 +1,171 @@ +/* + * The contents of this file are subject to the Mozilla Public + * License Version 1.1 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS + * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or + * implied. See the License for the specific language governing + * rights and limitations under the License. + * + * The Original Code is the Netscape security libraries. + * + * The Initial Developer of the Original Code is Netscape + * Communications Corporation. Portions created by Netscape are + * Copyright (C) 1994-2000 Netscape Communications Corporation. All + * Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU General Public License Version 2 or later (the + * "GPL"), in which case the provisions of the GPL are applicable + * instead of those above. If you wish to allow use of your + * version of this file only under the terms of the GPL and not to + * allow others to use your version of this file under the MPL, + * indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by + * the GPL. If you do not delete the provisions above, a recipient + * may use your version of this file under either the MPL or the + * GPL. + */ + +#ifdef DEBUG +static const char CVS_ID[] = "@(#) $RCSfile$ $Revision$ $Date$ $Name$"; +#endif /* DEBUG */ + +#ifndef BASE_H +#include "base.h" +#endif /* BASE_H */ + +/* + * This file isolates us from differences in NSPR versions. + * We have to detect the library with which we're running at + * runtime, and switch behaviours there. This lets us do + * stuff like load cryptoki modules in Communicator. + * + * Hey, it's the PORT layer all over again! + */ + +static int whatnspr = 0; + +static int +set_whatnspr +( + void +) +{ + /* + * The only runtime difference I could find was the + * return value of PR_dtoa. We can't just look for + * a symbol in NSPR >=2, because it'll always be + * found (because we compile against NSPR >=2). + * Maybe we could look for a symbol merely in NSPR 1? + * + */ + + char buffer[64]; + int decpt = 0, sign = 0; + char *rve = (char *)0; + /* extern int PR_dtoa(double, int, int, int *, int *, char **, char *, int); */ + int r = (int)PR_dtoa((double)1.0, 0, 5, &decpt, &sign, &rve, + buffer, sizeof(buffer)); + + switch( r ) { + case 0: + case -1: + whatnspr = 2; + /* + * If we needed to, *now* we could look up "libVersionPoint" + * and get more data there.. except all current NSPR's (up + * to NSPR 4.x at time of writing) still say 2 in their + * version structure. + */ + break; + default: + whatnspr = 1; + break; + } + + return whatnspr; +} + +#define WHATNSPR (whatnspr ? whatnspr : set_whatnspr()) + +NSS_IMPLEMENT PRStatus +nss_NewThreadPrivateIndex +( + PRUintn *ip, + PRThreadPrivateDTOR dtor +) +{ + switch( WHATNSPR ) { + case 1: + { + PRLibrary *l = (PRLibrary *)0; + void *f = PR_FindSymbolAndLibrary("PR_NewThreadPrivateID", &l); + typedef PRInt32 (*ntpt)(void); + ntpt ntp = (ntpt) f; + + PR_ASSERT((void *)0 != f); + + *ip = ntp(); + return PR_SUCCESS; + } + case 2: + default: + return PR_NewThreadPrivateIndex(ip, dtor); + } +} + +NSS_IMPLEMENT void * +nss_GetThreadPrivate +( + PRUintn i +) +{ + switch( WHATNSPR ) { + case 1: + { + PRLibrary *l = (PRLibrary *)0; + void *f = PR_FindSymbolAndLibrary("PR_GetThreadPrivate", &l); + typedef void *(*gtpt)(PRThread *, PRInt32); + gtpt gtp = (gtpt) f; + + PR_ASSERT((void *)0 != f); + + return gtp(PR_CurrentThread(), i); + } + case 2: + default: + return PR_GetThreadPrivate(i); + } +} + +NSS_IMPLEMENT void +nss_SetThreadPrivate +( + PRUintn i, + void *v +) +{ + switch( WHATNSPR ) { + case 1: + { + PRLibrary *l = (PRLibrary *)0; + void *f = PR_FindSymbolAndLibrary("PR_SetThreadPrivate", &l); + typedef PRStatus (*stpt)(PRThread *, PRInt32, void *); + stpt stp = (stpt) f; + + PR_ASSERT((void *)0 != f); + + (void)stp(PR_CurrentThread(), i, v); + return; + } + case 2: + default: + (void)PR_SetThreadPrivate(i, v); + return; + } +} |