diff options
Diffstat (limited to 'openssl/crypto/dso/dso_dl.c')
| -rw-r--r-- | openssl/crypto/dso/dso_dl.c | 549 |
1 files changed, 268 insertions, 281 deletions
diff --git a/openssl/crypto/dso/dso_dl.c b/openssl/crypto/dso/dso_dl.c index fc4236bd9..0087ac54a 100644 --- a/openssl/crypto/dso/dso_dl.c +++ b/openssl/crypto/dso/dso_dl.c @@ -1,6 +1,7 @@ /* dso_dl.c -*- mode:C; c-file-style: "eay" -*- */ -/* Written by Richard Levitte (richard@levitte.org) for the OpenSSL - * project 2000. +/* + * Written by Richard Levitte (richard@levitte.org) for the OpenSSL project + * 2000. */ /* ==================================================================== * Copyright (c) 2000 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * 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 @@ -62,332 +63,318 @@ #ifndef DSO_DL DSO_METHOD *DSO_METHOD_dl(void) - { - return NULL; - } +{ + return NULL; +} #else -#include <dl.h> +# include <dl.h> /* Part of the hack in "dl_load" ... */ -#define DSO_MAX_TRANSLATED_SIZE 256 +# define DSO_MAX_TRANSLATED_SIZE 256 static int dl_load(DSO *dso); 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 +# 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); static int dl_ctrl(DSO *dso, int cmd, long larg, void *parg); -#endif +# endif static char *dl_name_converter(DSO *dso, const char *filename); -static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2); -static int dl_pathbyaddr(void *addr,char *path,int sz); +static char *dl_merger(DSO *dso, const char *filespec1, + const char *filespec2); +static int dl_pathbyaddr(void *addr, char *path, int sz); static void *dl_globallookup(const char *name); static DSO_METHOD dso_meth_dl = { - "OpenSSL 'dl' shared library method", - dl_load, - dl_unload, - dl_bind_var, - dl_bind_func, + "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 - NULL, /* ctrl */ - dl_name_converter, - dl_merger, - NULL, /* init */ - NULL, /* finish */ - dl_pathbyaddr, - dl_globallookup - }; +# if 0 + NULL, /* unbind_var */ + NULL, /* unbind_func */ +# endif + NULL, /* ctrl */ + dl_name_converter, + dl_merger, + NULL, /* init */ + NULL, /* finish */ + dl_pathbyaddr, + dl_globallookup +}; DSO_METHOD *DSO_METHOD_dl(void) - { - return(&dso_meth_dl); - } +{ + 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. +/* + * 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) - { - shl_t ptr = NULL; - /* We don't do any fancy retries or anything, just take the method's - * (or DSO's if it has the callback set) best translation of the - * platform-independant filename and try once with that. */ - char *filename= DSO_convert_filename(dso, NULL); +{ + shl_t ptr = NULL; + /* + * We don't do any fancy retries or anything, just take the method's (or + * DSO's if it has the callback set) best translation of the + * platform-independant filename and try once with that. + */ + char *filename = DSO_convert_filename(dso, NULL); - if(filename == NULL) - { - DSOerr(DSO_F_DL_LOAD,DSO_R_NO_FILENAME); - goto err; - } - ptr = shl_load(filename, BIND_IMMEDIATE | - (dso->flags&DSO_FLAG_NO_NAME_TRANSLATION?0:DYNAMIC_PATH), 0L); - if(ptr == NULL) - { - DSOerr(DSO_F_DL_LOAD,DSO_R_LOAD_FAILED); - ERR_add_error_data(4, "filename(", filename, "): ", - strerror(errno)); - goto err; - } - if(!sk_push(dso->meth_data, (char *)ptr)) - { - DSOerr(DSO_F_DL_LOAD,DSO_R_STACK_ERROR); - goto err; - } - /* Success, stick the converted filename we've loaded under into the DSO - * (it also serves as the indicator that we are currently loaded). */ - dso->loaded_filename = filename; - return(1); -err: - /* Cleanup! */ - if(filename != NULL) - OPENSSL_free(filename); - if(ptr != NULL) - shl_unload(ptr); - return(0); - } + if (filename == NULL) { + DSOerr(DSO_F_DL_LOAD, DSO_R_NO_FILENAME); + goto err; + } + ptr = shl_load(filename, BIND_IMMEDIATE | + (dso->flags & DSO_FLAG_NO_NAME_TRANSLATION ? 0 : + DYNAMIC_PATH), 0L); + if (ptr == NULL) { + DSOerr(DSO_F_DL_LOAD, DSO_R_LOAD_FAILED); + ERR_add_error_data(4, "filename(", filename, "): ", strerror(errno)); + goto err; + } + if (!sk_push(dso->meth_data, (char *)ptr)) { + DSOerr(DSO_F_DL_LOAD, DSO_R_STACK_ERROR); + goto err; + } + /* + * Success, stick the converted filename we've loaded under into the DSO + * (it also serves as the indicator that we are currently loaded). + */ + dso->loaded_filename = filename; + return (1); + err: + /* Cleanup! */ + if (filename != NULL) + OPENSSL_free(filename); + if (ptr != NULL) + shl_unload(ptr); + return (0); +} 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); - } +{ + 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; +{ + 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); - ERR_add_error_data(4, "symname(", symname, "): ", - strerror(errno)); - return(NULL); - } - return(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); + ERR_add_error_data(4, "symname(", symname, "): ", strerror(errno)); + return (NULL); + } + return (sym); +} static DSO_FUNC_TYPE dl_bind_func(DSO *dso, const char *symname) - { - shl_t ptr; - void *sym; +{ + 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); - ERR_add_error_data(4, "symname(", symname, "): ", - strerror(errno)); - return(NULL); - } - return((DSO_FUNC_TYPE)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); + ERR_add_error_data(4, "symname(", symname, "): ", strerror(errno)); + return (NULL); + } + return ((DSO_FUNC_TYPE)sym); +} static char *dl_merger(DSO *dso, const char *filespec1, const char *filespec2) - { - char *merged; +{ + char *merged; - if(!filespec1 && !filespec2) - { - DSOerr(DSO_F_DL_MERGER, - ERR_R_PASSED_NULL_PARAMETER); - return(NULL); - } - /* If the first file specification is a rooted path, it rules. - same goes if the second file specification is missing. */ - if (!filespec2 || filespec1[0] == '/') - { - merged = OPENSSL_malloc(strlen(filespec1) + 1); - if(!merged) - { - DSOerr(DSO_F_DL_MERGER, - ERR_R_MALLOC_FAILURE); - return(NULL); - } - strcpy(merged, filespec1); - } - /* If the first file specification is missing, the second one rules. */ - else if (!filespec1) - { - merged = OPENSSL_malloc(strlen(filespec2) + 1); - if(!merged) - { - DSOerr(DSO_F_DL_MERGER, - ERR_R_MALLOC_FAILURE); - return(NULL); - } - strcpy(merged, filespec2); - } - else - /* This part isn't as trivial as it looks. It assumes that - the second file specification really is a directory, and - makes no checks whatsoever. Therefore, the result becomes - the concatenation of filespec2 followed by a slash followed - by filespec1. */ - { - int spec2len, len; + if (!filespec1 && !filespec2) { + DSOerr(DSO_F_DL_MERGER, ERR_R_PASSED_NULL_PARAMETER); + return (NULL); + } + /* + * If the first file specification is a rooted path, it rules. same goes + * if the second file specification is missing. + */ + if (!filespec2 || filespec1[0] == '/') { + merged = OPENSSL_malloc(strlen(filespec1) + 1); + if (!merged) { + DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE); + return (NULL); + } + strcpy(merged, filespec1); + } + /* + * If the first file specification is missing, the second one rules. + */ + else if (!filespec1) { + merged = OPENSSL_malloc(strlen(filespec2) + 1); + if (!merged) { + DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE); + return (NULL); + } + strcpy(merged, filespec2); + } else + /* + * This part isn't as trivial as it looks. It assumes that the + * second file specification really is a directory, and makes no + * checks whatsoever. Therefore, the result becomes the + * concatenation of filespec2 followed by a slash followed by + * filespec1. + */ + { + int spec2len, len; - spec2len = (filespec2 ? strlen(filespec2) : 0); - len = spec2len + (filespec1 ? strlen(filespec1) : 0); + spec2len = (filespec2 ? strlen(filespec2) : 0); + len = spec2len + (filespec1 ? strlen(filespec1) : 0); - if(filespec2 && filespec2[spec2len - 1] == '/') - { - spec2len--; - len--; - } - merged = OPENSSL_malloc(len + 2); - if(!merged) - { - DSOerr(DSO_F_DL_MERGER, - ERR_R_MALLOC_FAILURE); - return(NULL); - } - strcpy(merged, filespec2); - merged[spec2len] = '/'; - strcpy(&merged[spec2len + 1], filespec1); - } - return(merged); - } + if (filespec2 && filespec2[spec2len - 1] == '/') { + spec2len--; + len--; + } + merged = OPENSSL_malloc(len + 2); + if (!merged) { + DSOerr(DSO_F_DL_MERGER, ERR_R_MALLOC_FAILURE); + return (NULL); + } + strcpy(merged, filespec2); + merged[spec2len] = '/'; + strcpy(&merged[spec2len + 1], filespec1); + } + return (merged); +} -/* This function is identical to the one in dso_dlfcn.c, but as it is highly - * unlikely that both the "dl" *and* "dlfcn" variants are being compiled at the - * same time, there's no great duplicating the code. Figuring out an elegant - * way to share one copy of the code would be more difficult and would not - * leave the implementations independant. */ -#if defined(__hpux) +/* + * This function is identical to the one in dso_dlfcn.c, but as it is highly + * unlikely that both the "dl" *and* "dlfcn" variants are being compiled at + * the same time, there's no great duplicating the code. Figuring out an + * elegant way to share one copy of the code would be more difficult and + * would not leave the implementations independant. + */ +# if defined(__hpux) static const char extension[] = ".sl"; -#else +# else static const char extension[] = ".so"; -#endif +# endif static char *dl_name_converter(DSO *dso, const char *filename) - { - char *translated; - int len, rsize, transform; +{ + char *translated; + int len, rsize, transform; - len = strlen(filename); - rsize = len + 1; - transform = (strstr(filename, "/") == NULL); - { - /* We will convert this to "%s.s?" or "lib%s.s?" */ - rsize += strlen(extension);/* The length of ".s?" */ - if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0) - rsize += 3; /* The length of "lib" */ - } - translated = OPENSSL_malloc(rsize); - if(translated == NULL) - { - DSOerr(DSO_F_DL_NAME_CONVERTER, - DSO_R_NAME_TRANSLATION_FAILED); - return(NULL); - } - if(transform) - { - if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0) - sprintf(translated, "lib%s%s", filename, extension); - else - sprintf(translated, "%s%s", filename, extension); - } - else - sprintf(translated, "%s", filename); - return(translated); - } + len = strlen(filename); + rsize = len + 1; + transform = (strstr(filename, "/") == NULL); + { + /* We will convert this to "%s.s?" or "lib%s.s?" */ + rsize += strlen(extension); /* The length of ".s?" */ + if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0) + rsize += 3; /* The length of "lib" */ + } + translated = OPENSSL_malloc(rsize); + if (translated == NULL) { + DSOerr(DSO_F_DL_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED); + return (NULL); + } + if (transform) { + if ((DSO_flags(dso) & DSO_FLAG_NAME_TRANSLATION_EXT_ONLY) == 0) + sprintf(translated, "lib%s%s", filename, extension); + else + sprintf(translated, "%s%s", filename, extension); + } else + sprintf(translated, "%s", filename); + return (translated); +} -static int dl_pathbyaddr(void *addr,char *path,int sz) - { - struct shl_descriptor inf; - int i,len; +static int dl_pathbyaddr(void *addr, char *path, int sz) +{ + struct shl_descriptor inf; + int i, len; - if (addr == NULL) - { - union { int(*f)(void*,char*,int); void *p; } t = - { dl_pathbyaddr }; - addr = t.p; - } + if (addr == NULL) { + union { + int (*f) (void *, char *, int); + void *p; + } t = { + dl_pathbyaddr + }; + addr = t.p; + } - for (i=-1;shl_get_r(i,&inf)==0;i++) - { - if (((size_t)addr >= inf.tstart && (size_t)addr < inf.tend) || - ((size_t)addr >= inf.dstart && (size_t)addr < inf.dend)) - { - len = (int)strlen(inf.filename); - if (sz <= 0) return len+1; - if (len >= sz) len=sz-1; - memcpy(path,inf.filename,len); - path[len++] = 0; - return len; - } - } + for (i = -1; shl_get_r(i, &inf) == 0; i++) { + if (((size_t)addr >= inf.tstart && (size_t)addr < inf.tend) || + ((size_t)addr >= inf.dstart && (size_t)addr < inf.dend)) { + len = (int)strlen(inf.filename); + if (sz <= 0) + return len + 1; + if (len >= sz) + len = sz - 1; + memcpy(path, inf.filename, len); + path[len++] = 0; + return len; + } + } - return -1; - } + return -1; +} static void *dl_globallookup(const char *name) - { - void *ret; - shl_t h = NULL; +{ + void *ret; + shl_t h = NULL; - return shl_findsym(&h,name,TYPE_UNDEFINED,&ret) ? NULL : ret; - } -#endif /* DSO_DL */ + return shl_findsym(&h, name, TYPE_UNDEFINED, &ret) ? NULL : ret; +} +#endif /* DSO_DL */ |