diff options
Diffstat (limited to 'crypto/openssl/crypto/dso/dso_dl.c')
| -rw-r--r-- | crypto/openssl/crypto/dso/dso_dl.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/crypto/openssl/crypto/dso/dso_dl.c b/crypto/openssl/crypto/dso/dso_dl.c new file mode 100644 index 0000000..69810fc --- /dev/null +++ b/crypto/openssl/crypto/dso/dso_dl.c @@ -0,0 +1,251 @@ +/* dso_dl.c */ +/* Written by Richard Levitte (levitte@openssl.org) for the OpenSSL + * project 2000. + */ +/* ==================================================================== + * Copyright (c) 2000 The OpenSSL Project. All rights reserved. + * + * 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, this list of conditions and the following disclaimer. + * + * 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. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS CONTRIBUTORS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/dso.h> + +#ifndef DSO_DL +DSO_METHOD *DSO_METHOD_dl(void) + { + return NULL; + } +#else + +#include <dl.h> + +/* Part of the hack in "dl_load" ... */ +#define DSO_MAX_TRANSLATED_SIZE 256 + +static int dl_load(DSO *dso, const char *filename); +static int dl_unload(DSO *dso); +static void *dl_bind_var(DSO *dso, const char *symname); +static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname); +#if 0 +static int dl_unbind_var(DSO *dso, char *symname, void *symptr); +static int dl_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr); +static int dl_init(DSO *dso); +static int dl_finish(DSO *dso); +#endif +static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg); + +static DSO_METHOD dso_meth_dl = { + "OpenSSL 'dl' shared library method", + dl_load, + dl_unload, + dl_bind_var, + dl_bind_func, +/* For now, "unbind" doesn't exist */ +#if 0 + NULL, /* unbind_var */ + NULL, /* unbind_func */ +#endif + dl_ctrl, + NULL, /* init */ + NULL /* finish */ + }; + +DSO_METHOD *DSO_METHOD_dl(void) + { + return(&dso_meth_dl); + } + +/* For this DSO_METHOD, our meth_data STACK will contain; + * (i) the handle (shl_t) returned from shl_load(). + * NB: I checked on HPUX11 and shl_t is itself a pointer + * type so the cast is safe. + */ + +static int dl_load(DSO *dso, const char *filename) + { + shl_t ptr; + char translated[DSO_MAX_TRANSLATED_SIZE]; + int len; + + /* The same comment as in dlfcn_load applies here. bleurgh. */ + len = strlen(filename); + if((dso->flags & DSO_FLAG_NAME_TRANSLATION) && + (len + 6 < DSO_MAX_TRANSLATED_SIZE) && + (strstr(filename, "/") == NULL)) + { + sprintf(translated, "lib%s.so", filename); + ptr = shl_load(translated, BIND_IMMEDIATE, NULL); + } + else + ptr = shl_load(filename, BIND_IMMEDIATE, NULL); + if(ptr == NULL) + { + DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED); + return(0); + } + if(!sk_push(dso->meth_data, (char *)ptr)) + { + DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR); + shl_unload(ptr); + return(0); + } + return(1); + } + +static int dl_unload(DSO *dso) + { + shl_t ptr; + if(dso == NULL) + { + DSOerr(DSO_F_DL_UNLOAD,ERR_R_PASSED_NULL_PARAMETER); + return(0); + } + if(sk_num(dso->meth_data) < 1) + return(1); + /* Is this statement legal? */ + ptr = (shl_t)sk_pop(dso->meth_data); + if(ptr == NULL) + { + DSOerr(DSO_F_DL_UNLOAD,DSO_R_NULL_HANDLE); + /* Should push the value back onto the stack in + * case of a retry. */ + sk_push(dso->meth_data, (char *)ptr); + return(0); + } + shl_unload(ptr); + return(1); + } + +static void *dl_bind_var(DSO *dso, const char *symname) + { + shl_t ptr; + void *sym; + + if((dso == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_DL_BIND_VAR,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(sk_num(dso->meth_data) < 1) + { + DSOerr(DSO_F_DL_BIND_VAR,DSO_R_STACK_ERROR); + return(NULL); + } + ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1); + if(ptr == NULL) + { + DSOerr(DSO_F_DL_BIND_VAR,DSO_R_NULL_HANDLE); + return(NULL); + } + if (shl_findsym(ptr, symname, TYPE_UNDEFINED, &sym) < 0) + { + DSOerr(DSO_F_DL_BIND_VAR,DSO_R_SYM_FAILURE); + return(NULL); + } + return(sym); + } + +static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname) + { + shl_t ptr; + void *sym; + + if((dso == NULL) || (symname == NULL)) + { + DSOerr(DSO_F_DL_BIND_FUNC,ERR_R_PASSED_NULL_PARAMETER); + return(NULL); + } + if(sk_num(dso->meth_data) < 1) + { + DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_STACK_ERROR); + return(NULL); + } + ptr = (shl_t)sk_value(dso->meth_data, sk_num(dso->meth_data) - 1); + if(ptr == NULL) + { + DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_NULL_HANDLE); + return(NULL); + } + if (shl_findsym(ptr, symname, TYPE_UNDEFINED, &sym) < 0) + { + DSOerr(DSO_F_DL_BIND_FUNC,DSO_R_SYM_FAILURE); + return(NULL); + } + return((DSO_FUNC_TYPE)sym); + } + +static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg) + { + if(dso == NULL) + { + DSOerr(DSO_F_DL_CTRL,ERR_R_PASSED_NULL_PARAMETER); + return(-1); + } + switch(cmd) + { + case DSO_CTRL_GET_FLAGS: + return dso->flags; + case DSO_CTRL_SET_FLAGS: + dso->flags = (int)larg; + return(0); + case DSO_CTRL_OR_FLAGS: + dso->flags |= (int)larg; + return(0); + default: + break; + } + DSOerr(DSO_F_DL_CTRL,DSO_R_UNKNOWN_COMMAND); + return(-1); + } + +#endif /* DSO_DL */ |
