From 8da7a655ddcca0ead3d48b24db1ee13239e504c4 Mon Sep 17 00:00:00 2001 From: Thorsten Kukuk Date: Fri, 18 Nov 2005 08:59:56 +0000 Subject: Relevant BUGIDs: Purpose of commit: Commit summary: --------------- submit missing files from last checkin --- libpam/pam_dynamic.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++ libpam/pam_dynamic.h | 11 ++++ 2 files changed, 151 insertions(+) create mode 100644 libpam/pam_dynamic.c create mode 100644 libpam/pam_dynamic.h diff --git a/libpam/pam_dynamic.c b/libpam/pam_dynamic.c new file mode 100644 index 00000000..6bb3d559 --- /dev/null +++ b/libpam/pam_dynamic.c @@ -0,0 +1,140 @@ +/* + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, and the entire permission notice in its entirety, + * including the disclaimer of warranties. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * ALTERNATIVELY, this product may be distributed under the terms of + * the GNU Public License, in which case the provisions of the GPL are + * required INSTEAD OF the above restrictions. (This clause is + * necessary due to a potential bad interaction between the GPL and + * the restrictions contained in a BSD-style copyright.) + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "pam_private.h" + +#ifdef PAM_SHL +# include +#elif defined(PAM_DYLD) +# include +#else /* PAM_SHL */ +# include +#endif /* PAM_SHL */ + +#include "pam_dynamic.h" + +#ifndef SHLIB_SYM_PREFIX +#define SHLIB_SYM_PREFIX "_" +#endif + +void *_pam_dlopen(const char *mod_path) +{ +#ifdef PAM_SHL + return shl_load(mod_path, BIND_IMMEDIATE, 0L); +#elif defined(PAM_DYLD) + NSObjectFileImage ofile; + void *ret = NULL; + + if (NSCreateObjectFileImageFromFile(mod_path, &ofile) != + NSObjectFileImageSuccess ) + return NULL; + + ret = NSLinkModule(ofile, mod_path, NSLINKMODULE_OPTION_PRIVATE | NSLINKMODULE_OPTION_BINDNOW); + NSDestroyObjectFileImage(ofile); + + return ret; +#else + return dlopen(mod_path, RTLD_NOW); +#endif +} + +servicefn _pam_dlsym(void *handle, const char *symbol) +{ +#ifdef PAM_SHL + char *_symbol = NULL; + servicefn ret; + + if( symbol == NULL ) + return NULL; + + if( shl_findsym(&handle, symbol, (short) TYPE_PROCEDURE, &ret ){ + _symbol = malloc( strlen(symbol) + sizeof(SHLIB_SYM_PREFIX) + 1 ); + if( _symbol == NULL ) + return NULL; + strcpy(_symbol, SHLIB_SYM_PREFIX); + strcat(_symbol, symbol); + if( shl_findsym(&handle, _symbol, + (short) TYPE_PROCEDURE, &ret ){ + free(_symbol); + return NULL; + } + free(_symbol); + } + + return ret; + +#elif defined(PAM_DYLD) + NSSymbol nsSymbol; + char *_symbol; + + if( symbol == NULL ) + return NULL; + _symbol = malloc( strlen(symbol) + 2 ); + if( _symbol == NULL ) + return NULL; + strcpy(_symbol, SHLIB_SYM_PREFIX); + strcat(_symbol, symbol); + + nsSymbol = NSLookupSymbolInModule(handle, _symbol); + if( nsSymbol == NULL ) + return NULL; + free(_symbol); + + return (servicefn)NSAddressOfSymbol(nsSymbol); +#else + return (servicefn) dlsym(handle, symbol); +#endif +} + +void _pam_dlclose(void *handle) +{ +#ifdef PAM_SHL + shl_unload(handle); +#elif defined(PAM_DYLD) + NSUnLinkModule((NSModule)handle, NSUNLINKMODULE_OPTION_NONE); +#else + dlclose(handle); +#endif + + return; +} + +const char * +_pam_dlerror (void) +{ +#if defined(PAM_SHL) || defined(PAM_DYLD) + return "unknown"; +#else + return dlerror (); +#endif +} diff --git a/libpam/pam_dynamic.h b/libpam/pam_dynamic.h new file mode 100644 index 00000000..35c427ae --- /dev/null +++ b/libpam/pam_dynamic.h @@ -0,0 +1,11 @@ +#ifndef _PAM_DYNAMIC_H +#define _PAM_DYNAMIC_H + +typedef int (*servicefn)(pam_handle_t *, int, int, char **); + +void *_pam_dlopen (const char *mod_path); +servicefn _pam_dlsym (void *handle, const char *symbol); +void _pam_dlclose (void *handle); +const char *_pam_dlerror (void); + +#endif -- cgit v1.2.3