X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Ferr%2Ferr.c;h=1d186a7b9bbdf8beefb4bc9c95fea797524d3da4;hp=4f7a2ce4ac7c5988407830b220aedaff5a4e695b;hb=70f34a58411014e76dd03ed6ac0b1bdb95b53b16;hpb=bc36ee6227517edae802bcb0da68d4f04fe1fb5e diff --git a/crypto/err/err.c b/crypto/err/err.c index 4f7a2ce4ac..1d186a7b9b 100644 --- a/crypto/err/err.c +++ b/crypto/err/err.c @@ -56,7 +56,7 @@ * [including the GNU Public Licence.] */ /* ==================================================================== - * Copyright (c) 1998-2000 The OpenSSL Project. All rights reserved. + * Copyright (c) 1998-2001 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 @@ -119,20 +119,7 @@ #include #include - -static LHASH *error_hash=NULL; -static LHASH *thread_hash=NULL; - -/* static unsigned long err_hash(ERR_STRING_DATA *a); */ -static unsigned long err_hash(const void *a_void); -/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ -static int err_cmp(const void *a_void, const void *b_void); -/* static unsigned long pid_hash(ERR_STATE *pid); */ -static unsigned long pid_hash(const void *pid_void); -/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ -static int pid_cmp(const void *a_void,const void *pid_void); -static unsigned long get_error_values(int inc,const char **file,int *line, - const char **data,int *flags); +static void err_load_strings(int lib, ERR_STRING_DATA *str); static void ERR_STATE_free(ERR_STATE *s); #ifndef OPENSSL_NO_ERR @@ -142,20 +129,18 @@ static ERR_STRING_DATA ERR_str_libraries[]= {ERR_PACK(ERR_LIB_SYS,0,0) ,"system library"}, {ERR_PACK(ERR_LIB_BN,0,0) ,"bignum routines"}, {ERR_PACK(ERR_LIB_RSA,0,0) ,"rsa routines"}, -{ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, {ERR_PACK(ERR_LIB_DH,0,0) ,"Diffie-Hellman routines"}, {ERR_PACK(ERR_LIB_EVP,0,0) ,"digital envelope routines"}, {ERR_PACK(ERR_LIB_BUF,0,0) ,"memory buffer routines"}, -{ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, {ERR_PACK(ERR_LIB_OBJ,0,0) ,"object identifier routines"}, {ERR_PACK(ERR_LIB_PEM,0,0) ,"PEM routines"}, -{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, +{ERR_PACK(ERR_LIB_DSA,0,0) ,"dsa routines"}, {ERR_PACK(ERR_LIB_X509,0,0) ,"x509 certificate routines"}, +{ERR_PACK(ERR_LIB_ASN1,0,0) ,"asn1 encoding routines"}, {ERR_PACK(ERR_LIB_CONF,0,0) ,"configuration file routines"}, -{ERR_PACK(ERR_LIB_METH,0,0) ,"X509 lookup 'method' routines"}, +{ERR_PACK(ERR_LIB_CRYPTO,0,0) ,"common libcrypto routines"}, +{ERR_PACK(ERR_LIB_EC,0,0) ,"elliptic curve routines"}, {ERR_PACK(ERR_LIB_SSL,0,0) ,"SSL routines"}, -{ERR_PACK(ERR_LIB_RSAREF,0,0) ,"RSAref routines"}, -{ERR_PACK(ERR_LIB_PROXY,0,0) ,"Proxy routines"}, {ERR_PACK(ERR_LIB_BIO,0,0) ,"BIO routines"}, {ERR_PACK(ERR_LIB_PKCS7,0,0) ,"PKCS7 routines"}, {ERR_PACK(ERR_LIB_X509V3,0,0) ,"X509 V3 routines"}, @@ -181,46 +166,368 @@ static ERR_STRING_DATA ERR_str_functs[]= {ERR_PACK(0,SYS_F_WSASTARTUP,0), "WSAstartup"}, #endif {ERR_PACK(0,SYS_F_OPENDIR,0), "opendir"}, + {ERR_PACK(0,SYS_F_FREAD,0), "fread"}, {0,NULL}, }; static ERR_STRING_DATA ERR_str_reasons[]= { -{ERR_R_FATAL ,"fatal"}, {ERR_R_SYS_LIB ,"system lib"}, {ERR_R_BN_LIB ,"BN lib"}, {ERR_R_RSA_LIB ,"RSA lib"}, {ERR_R_DH_LIB ,"DH lib"}, {ERR_R_EVP_LIB ,"EVP lib"}, {ERR_R_BUF_LIB ,"BUF lib"}, -{ERR_R_BIO_LIB ,"BIO lib"}, {ERR_R_OBJ_LIB ,"OBJ lib"}, {ERR_R_PEM_LIB ,"PEM lib"}, +{ERR_R_DSA_LIB ,"DSA lib"}, {ERR_R_X509_LIB ,"X509 lib"}, -{ERR_R_METH_LIB ,"METH lib"}, {ERR_R_ASN1_LIB ,"ASN1 lib"}, {ERR_R_CONF_LIB ,"CONF lib"}, +{ERR_R_CRYPTO_LIB ,"CRYPTO lib"}, +{ERR_R_EC_LIB ,"EC lib"}, {ERR_R_SSL_LIB ,"SSL lib"}, -{ERR_R_PROXY_LIB ,"PROXY lib"}, {ERR_R_BIO_LIB ,"BIO lib"}, {ERR_R_PKCS7_LIB ,"PKCS7 lib"}, +{ERR_R_X509V3_LIB ,"X509V3 lib"}, {ERR_R_PKCS12_LIB ,"PKCS12 lib"}, -{ERR_R_MALLOC_FAILURE ,"Malloc failure"}, -{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, -{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, +{ERR_R_RAND_LIB ,"RAND lib"}, +{ERR_R_DSO_LIB ,"DSO lib"}, +{ERR_R_ENGINE_LIB ,"ENGINE lib"}, +{ERR_R_OCSP_LIB ,"OCSP lib"}, + {ERR_R_NESTED_ASN1_ERROR ,"nested asn1 error"}, {ERR_R_BAD_ASN1_OBJECT_HEADER ,"bad asn1 object header"}, {ERR_R_BAD_GET_ASN1_OBJECT_CALL ,"bad get asn1 object call"}, {ERR_R_EXPECTING_AN_ASN1_SEQUENCE ,"expecting an asn1 sequence"}, {ERR_R_ASN1_LENGTH_MISMATCH ,"asn1 length mismatch"}, {ERR_R_MISSING_ASN1_EOS ,"missing asn1 eos"}, -{ERR_R_DSO_LIB ,"DSO lib"}, -{ERR_R_ENGINE_LIB ,"ENGINE lib"}, + +{ERR_R_FATAL ,"fatal"}, +{ERR_R_MALLOC_FAILURE ,"malloc failure"}, +{ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED ,"called a function you should not call"}, +{ERR_R_PASSED_NULL_PARAMETER ,"passed a null parameter"}, +{ERR_R_INTERNAL_ERROR ,"internal error"}, +{ERR_R_DISABLED ,"called a function that was disabled at compile-time"}, {0,NULL}, }; +#endif + + +/* Define the predeclared (but externally opaque) "ERR_FNS" type */ +struct st_ERR_FNS + { + /* Works on the "error_hash" string table */ + LHASH *(*cb_err_get)(int create); + void (*cb_err_del)(void); + ERR_STRING_DATA *(*cb_err_get_item)(const ERR_STRING_DATA *); + ERR_STRING_DATA *(*cb_err_set_item)(ERR_STRING_DATA *); + ERR_STRING_DATA *(*cb_err_del_item)(ERR_STRING_DATA *); + /* Works on the "thread_hash" error-state table */ + LHASH *(*cb_thread_get)(int create); + void (*cb_thread_release)(LHASH **hash); + ERR_STATE *(*cb_thread_get_item)(const ERR_STATE *); + ERR_STATE *(*cb_thread_set_item)(ERR_STATE *); + void (*cb_thread_del_item)(const ERR_STATE *); + /* Returns the next available error "library" numbers */ + int (*cb_get_next_lib)(void); + }; + +/* Predeclarations of the "err_defaults" functions */ +static LHASH *int_err_get(int create); +static void int_err_del(void); +static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *); +static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *); +static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *); +static LHASH *int_thread_get(int create); +static void int_thread_release(LHASH **hash); +static ERR_STATE *int_thread_get_item(const ERR_STATE *); +static ERR_STATE *int_thread_set_item(ERR_STATE *); +static void int_thread_del_item(const ERR_STATE *); +static int int_err_get_next_lib(void); +/* The static ERR_FNS table using these defaults functions */ +static const ERR_FNS err_defaults = + { + int_err_get, + int_err_del, + int_err_get_item, + int_err_set_item, + int_err_del_item, + int_thread_get, + int_thread_release, + int_thread_get_item, + int_thread_set_item, + int_thread_del_item, + int_err_get_next_lib + }; + +/* The replacable table of ERR_FNS functions we use at run-time */ +static const ERR_FNS *err_fns = NULL; + +/* Eg. rather than using "err_get()", use "ERRFN(err_get)()". */ +#define ERRFN(a) err_fns->cb_##a + +/* The internal state used by "err_defaults" - as such, the setting, reading, + * creating, and deleting of this data should only be permitted via the + * "err_defaults" functions. This way, a linked module can completely defer all + * ERR state operation (together with requisite locking) to the implementations + * and state in the loading application. */ +static LHASH *int_error_hash = NULL; +static LHASH *int_thread_hash = NULL; +static int int_thread_hash_references = 0; +static int int_err_library_number= ERR_LIB_USER; + +/* Internal function that checks whether "err_fns" is set and if not, sets it to + * the defaults. */ +static void err_fns_check(void) + { + if (err_fns) return; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!err_fns) + err_fns = &err_defaults; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + } + +/* API functions to get or set the underlying ERR functions. */ + +const ERR_FNS *ERR_get_implementation(void) + { + err_fns_check(); + return err_fns; + } + +int ERR_set_implementation(const ERR_FNS *fns) + { + int ret = 0; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + /* It's too late if 'err_fns' is non-NULL. BTW: not much point setting + * an error is there?! */ + if (!err_fns) + { + err_fns = fns; + ret = 1; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + return ret; + } + +/* These are the callbacks provided to "lh_new()" when creating the LHASH tables + * internal to the "err_defaults" implementation. */ + +/* static unsigned long err_hash(ERR_STRING_DATA *a); */ +static unsigned long err_hash(const void *a_void); +/* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b); */ +static int err_cmp(const void *a_void, const void *b_void); +/* static unsigned long pid_hash(ERR_STATE *pid); */ +static unsigned long pid_hash(const void *pid_void); +/* static int pid_cmp(ERR_STATE *a,ERR_STATE *pid); */ +static int pid_cmp(const void *a_void,const void *pid_void); +static unsigned long get_error_values(int inc,int top,const char **file,int *line, + const char **data,int *flags); + +/* The internal functions used in the "err_defaults" implementation */ + +static LHASH *int_err_get(int create) + { + LHASH *ret = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!int_error_hash && create) + { + CRYPTO_push_info("int_err_get (err.c)"); + int_error_hash = lh_new(err_hash, err_cmp); + CRYPTO_pop_info(); + } + if (int_error_hash) + ret = int_error_hash; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return ret; + } + +static void int_err_del(void) + { + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (int_error_hash) + { + lh_free(int_error_hash); + int_error_hash = NULL; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + } + +static ERR_STRING_DATA *int_err_get_item(const ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_retrieve(hash, d); + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static ERR_STRING_DATA *int_err_set_item(ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_insert(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static ERR_STRING_DATA *int_err_del_item(ERR_STRING_DATA *d) + { + ERR_STRING_DATA *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(err_get)(0); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STRING_DATA *)lh_delete(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return p; + } + +static LHASH *int_thread_get(int create) + { + LHASH *ret = NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + if (!int_thread_hash && create) + { + CRYPTO_push_info("int_thread_get (err.c)"); + int_thread_hash = lh_new(pid_hash, pid_cmp); + CRYPTO_pop_info(); + } + if (int_thread_hash) + { + int_thread_hash_references++; + ret = int_thread_hash; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + return ret; + } + +static void int_thread_release(LHASH **hash) + { + int i; + + if (hash == NULL || *hash == NULL) + return; + + i = CRYPTO_add(&int_thread_hash_references, -1, CRYPTO_LOCK_ERR); + +#ifdef REF_PRINT + fprintf(stderr,"%4d:%s\n",int_thread_hash_references,"ERR"); +#endif + if (i > 0) return; +#ifdef REF_CHECK + if (i < 0) + { + fprintf(stderr,"int_thread_release, bad reference count\n"); + abort(); /* ok */ + } +#endif + *hash = NULL; + } + +static ERR_STATE *int_thread_get_item(const ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(0); + if (!hash) + return NULL; + + CRYPTO_r_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_retrieve(hash, d); + CRYPTO_r_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + return p; + } + +static ERR_STATE *int_thread_set_item(ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(1); + if (!hash) + return NULL; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_insert(hash, d); + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + return p; + } + +static void int_thread_del_item(const ERR_STATE *d) + { + ERR_STATE *p; + LHASH *hash; + + err_fns_check(); + hash = ERRFN(thread_get)(0); + if (!hash) + return; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + p = (ERR_STATE *)lh_delete(hash, d); + /* make sure we don't leak memory */ + if (int_thread_hash_references == 1 + && int_thread_hash && (lh_num_items(int_thread_hash) == 0)) + { + lh_free(int_thread_hash); + int_thread_hash = NULL; + } + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + ERRFN(thread_release)(&hash); + if (p) + ERR_STATE_free(p); + } + +static int int_err_get_next_lib(void) + { + int ret; + + CRYPTO_w_lock(CRYPTO_LOCK_ERR); + ret = int_err_library_number++; + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + + return ret; + } +#ifndef OPENSSL_NO_ERR #define NUM_SYS_STR_REASONS 127 #define LEN_SYS_STR_REASON 32 @@ -234,13 +541,16 @@ static ERR_STRING_DATA SYS_str_reasons[NUM_SYS_STR_REASONS + 1]; * will be returned for SYSerr(), which always gets an errno * value and never one of those 'standard' reason codes. */ -static void build_SYS_str_reasons() +static void build_SYS_str_reasons(void) { /* OPENSSL_malloc cannot be used here, use static storage instead */ static char strerror_tab[NUM_SYS_STR_REASONS][LEN_SYS_STR_REASON]; int i; + static int init = 1; + + if (!init) return; - CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); + CRYPTO_w_lock(CRYPTO_LOCK_ERR); for (i = 1; i <= NUM_SYS_STR_REASONS; i++) { @@ -265,24 +575,37 @@ static void build_SYS_str_reasons() /* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, * as required by ERR_load_strings. */ - CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); + init = 0; + + CRYPTO_w_unlock(CRYPTO_LOCK_ERR); } #endif #define err_clear_data(p,i) \ + do { \ if (((p)->err_data[i] != NULL) && \ (p)->err_data_flags[i] & ERR_TXT_MALLOCED) \ { \ OPENSSL_free((p)->err_data[i]); \ (p)->err_data[i]=NULL; \ } \ - (p)->err_data_flags[i]=0; + (p)->err_data_flags[i]=0; \ + } while(0) + +#define err_clear(p,i) \ + do { \ + (p)->err_flags[i]=0; \ + (p)->err_buffer[i]=0; \ + err_clear_data(p,i); \ + (p)->err_file[i]=NULL; \ + (p)->err_line[i]= -1; \ + } while(0) static void ERR_STATE_free(ERR_STATE *s) { int i; - if(s == NULL) + if (s == NULL) return; for (i=0; ierror) { str->error|=ERR_PACK(lib,0,0); - lh_insert(error_hash,str); + ERRFN(err_set_item)(str); str++; } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); } -void ERR_free_strings(void) +void ERR_load_strings(int lib, ERR_STRING_DATA *str) { - CRYPTO_w_lock(CRYPTO_LOCK_ERR); + ERR_load_ERR_strings(); + err_load_strings(lib, str); + } - if (error_hash != NULL) +void ERR_unload_strings(int lib, ERR_STRING_DATA *str) + { + while (str->error) { - lh_free(error_hash); - error_hash=NULL; + str->error|=ERR_PACK(lib,0,0); + ERRFN(err_del_item)(str); + str++; } + } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); +void ERR_free_strings(void) + { + err_fns_check(); + ERRFN(err_del)(); } /********************************************************/ @@ -387,6 +690,7 @@ void ERR_put_error(int lib, int func, int reason, const char *file, es->top=(es->top+1)%ERR_NUM_ERRORS; if (es->top == es->bottom) es->bottom=(es->bottom+1)%ERR_NUM_ERRORS; + es->err_flags[es->top]=0; es->err_buffer[es->top]=ERR_PACK(lib,func,reason); es->err_file[es->top]=file; es->err_line[es->top]=line; @@ -395,49 +699,54 @@ void ERR_put_error(int lib, int func, int reason, const char *file, void ERR_clear_error(void) { + int i; ERR_STATE *es; es=ERR_get_state(); -#if 0 - /* hmm... is this needed */ for (i=0; ierr_buffer[i]=0; - es->err_file[i]=NULL; - es->err_line[i]= -1; - err_clear_data(es,i); + err_clear(es,i); } -#endif es->top=es->bottom=0; } unsigned long ERR_get_error(void) - { return(get_error_values(1,NULL,NULL,NULL,NULL)); } + { return(get_error_values(1,0,NULL,NULL,NULL,NULL)); } unsigned long ERR_get_error_line(const char **file, int *line) - { return(get_error_values(1,file,line,NULL,NULL)); } + { return(get_error_values(1,0,file,line,NULL,NULL)); } unsigned long ERR_get_error_line_data(const char **file, int *line, const char **data, int *flags) - { return(get_error_values(1,file,line, - data,flags)); } + { return(get_error_values(1,0,file,line,data,flags)); } + unsigned long ERR_peek_error(void) - { return(get_error_values(0,NULL,NULL,NULL,NULL)); } + { return(get_error_values(0,0,NULL,NULL,NULL,NULL)); } -unsigned long ERR_peek_error_line(const char **file, - int *line) - { return(get_error_values(0,file,line,NULL,NULL)); } +unsigned long ERR_peek_error_line(const char **file, int *line) + { return(get_error_values(0,0,file,line,NULL,NULL)); } unsigned long ERR_peek_error_line_data(const char **file, int *line, const char **data, int *flags) - { return(get_error_values(0,file,line, - data,flags)); } + { return(get_error_values(0,0,file,line,data,flags)); } + + +unsigned long ERR_peek_last_error(void) + { return(get_error_values(0,1,NULL,NULL,NULL,NULL)); } + +unsigned long ERR_peek_last_error_line(const char **file, int *line) + { return(get_error_values(0,1,file,line,NULL,NULL)); } + +unsigned long ERR_peek_last_error_line_data(const char **file, int *line, + const char **data, int *flags) + { return(get_error_values(0,1,file,line,data,flags)); } -static unsigned long get_error_values(int inc, const char **file, int *line, + +static unsigned long get_error_values(int inc, int top, const char **file, int *line, const char **data, int *flags) { int i=0; @@ -446,8 +755,21 @@ static unsigned long get_error_values(int inc, const char **file, int *line, es=ERR_get_state(); - if (es->bottom == es->top) return(0); - i=(es->bottom+1)%ERR_NUM_ERRORS; + if (inc && top) + { + if (file) *file = ""; + if (line) *line = 0; + if (data) *data = ""; + if (flags) *flags = 0; + + return ERR_R_INTERNAL_ERROR; + } + + if (es->bottom == es->top) return 0; + if (top) + i=es->top; /* last error */ + else + i=(es->bottom+1)%ERR_NUM_ERRORS; /* first error */ ret=es->err_buffer[i]; if (inc) @@ -470,7 +792,14 @@ static unsigned long get_error_values(int inc, const char **file, int *line, } } - if (data != NULL) + if (data == NULL) + { + if (inc) + { + err_clear_data(es, i); + } + } + else { if (es->err_data[i] == NULL) { @@ -483,7 +812,7 @@ static unsigned long get_error_values(int inc, const char **file, int *line, if (flags != NULL) *flags=es->err_data_flags[i]; } } - return(ret); + return ret; } void ERR_error_string_n(unsigned long e, char *buf, size_t len) @@ -545,58 +874,49 @@ char *ERR_error_string(unsigned long e, char *ret) if (ret == NULL) ret=buf; ERR_error_string_n(e, ret, 256); - return(ret); + return ret; } LHASH *ERR_get_string_table(void) { - return(error_hash); + err_fns_check(); + return ERRFN(err_get)(0); } -/* not thread-safe */ LHASH *ERR_get_err_state_table(void) { - return(thread_hash); + err_fns_check(); + return ERRFN(thread_get)(0); + } + +void ERR_release_err_state_table(LHASH **hash) + { + err_fns_check(); + ERRFN(thread_release)(hash); } const char *ERR_lib_error_string(unsigned long e) { - ERR_STRING_DATA d,*p=NULL; + ERR_STRING_DATA d,*p; unsigned long l; + err_fns_check(); l=ERR_GET_LIB(e); - - CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); - - if (error_hash != NULL) - { - d.error=ERR_PACK(l,0,0); - p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); - } - - CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); - + d.error=ERR_PACK(l,0,0); + p=ERRFN(err_get_item)(&d); return((p == NULL)?NULL:p->string); } const char *ERR_func_error_string(unsigned long e) { - ERR_STRING_DATA d,*p=NULL; + ERR_STRING_DATA d,*p; unsigned long l,f; + err_fns_check(); l=ERR_GET_LIB(e); f=ERR_GET_FUNC(e); - - CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); - - if (error_hash != NULL) - { - d.error=ERR_PACK(l,f,0); - p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); - } - - CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); - + d.error=ERR_PACK(l,f,0); + p=ERRFN(err_get_item)(&d); return((p == NULL)?NULL:p->string); } @@ -605,24 +925,16 @@ const char *ERR_reason_error_string(unsigned long e) ERR_STRING_DATA d,*p=NULL; unsigned long l,r; + err_fns_check(); l=ERR_GET_LIB(e); r=ERR_GET_REASON(e); - - CRYPTO_w_lock(CRYPTO_LOCK_ERR_HASH); - - if (error_hash != NULL) + d.error=ERR_PACK(l,0,r); + p=ERRFN(err_get_item)(&d); + if (!p) { - d.error=ERR_PACK(l,0,r); - p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); - if (p == NULL) - { - d.error=ERR_PACK(0,0,r); - p=(ERR_STRING_DATA *)lh_retrieve(error_hash,&d); - } + d.error=ERR_PACK(0,0,r); + p=ERRFN(err_get_item)(&d); } - - CRYPTO_w_unlock(CRYPTO_LOCK_ERR_HASH); - return((p == NULL)?NULL:p->string); } @@ -631,7 +943,7 @@ static unsigned long err_hash(const void *a_void) { unsigned long ret,l; - l=((ERR_STRING_DATA *)a_void)->error; + l=((const ERR_STRING_DATA *)a_void)->error; ret=l^ERR_GET_LIB(l)^ERR_GET_FUNC(l); return(ret^ret%19*13); } @@ -639,65 +951,47 @@ static unsigned long err_hash(const void *a_void) /* static int err_cmp(ERR_STRING_DATA *a, ERR_STRING_DATA *b) */ static int err_cmp(const void *a_void, const void *b_void) { - return((int)(((ERR_STRING_DATA *)a_void)->error - - ((ERR_STRING_DATA *)b_void)->error)); + return((int)(((const ERR_STRING_DATA *)a_void)->error - + ((const ERR_STRING_DATA *)b_void)->error)); } /* static unsigned long pid_hash(ERR_STATE *a) */ static unsigned long pid_hash(const void *a_void) { - return(((ERR_STATE *)a_void)->pid*13); + return(((const ERR_STATE *)a_void)->pid*13); } /* static int pid_cmp(ERR_STATE *a, ERR_STATE *b) */ static int pid_cmp(const void *a_void, const void *b_void) { - return((int)((long)((ERR_STATE *)a_void)->pid - - (long)((ERR_STATE *)b_void)->pid)); + return((int)((long)((const ERR_STATE *)a_void)->pid - + (long)((const ERR_STATE *)b_void)->pid)); } void ERR_remove_state(unsigned long pid) { - ERR_STATE *p = NULL,tmp; + ERR_STATE tmp; - if (thread_hash == NULL) - return; + err_fns_check(); if (pid == 0) pid=(unsigned long)CRYPTO_thread_id(); tmp.pid=pid; - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - if (thread_hash) - { - p=(ERR_STATE *)lh_delete(thread_hash,&tmp); - if (lh_num_items(thread_hash) == 0) - { - /* make sure we don't leak memory */ - lh_free(thread_hash); - thread_hash = NULL; - } - } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); - - if (p != NULL) ERR_STATE_free(p); + /* thread_del_item automatically destroys the LHASH if the number of + * items reaches zero. */ + ERRFN(thread_del_item)(&tmp); } ERR_STATE *ERR_get_state(void) { static ERR_STATE fallback; - ERR_STATE *ret=NULL,tmp,*tmpp=NULL; - int thread_state_exists; + ERR_STATE *ret,tmp,*tmpp=NULL; int i; unsigned long pid; + err_fns_check(); pid=(unsigned long)CRYPTO_thread_id(); - - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - if (thread_hash != NULL) - { - tmp.pid=pid; - ret=(ERR_STATE *)lh_retrieve(thread_hash,&tmp); - } - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); + tmp.pid=pid; + ret=ERRFN(thread_get_item)(&tmp); /* ret == the error state, if NULL, make a new one */ if (ret == NULL) @@ -712,42 +1006,25 @@ ERR_STATE *ERR_get_state(void) ret->err_data[i]=NULL; ret->err_data_flags[i]=0; } - - CRYPTO_w_lock(CRYPTO_LOCK_ERR); - - /* no entry yet in thread_hash for current thread - - * thus, it may have changed since we last looked at it */ - if (thread_hash == NULL) - thread_hash = lh_new(pid_hash, pid_cmp); - if (thread_hash == NULL) - thread_state_exists = 0; /* allocation error */ - else - { - tmpp=(ERR_STATE *)lh_insert(thread_hash,ret); - thread_state_exists = 1; - } - - CRYPTO_w_unlock(CRYPTO_LOCK_ERR); - - if (!thread_state_exists) + tmpp = ERRFN(thread_set_item)(ret); + /* To check if insertion failed, do a get. */ + if (ERRFN(thread_get_item)(ret) != ret) { ERR_STATE_free(ret); /* could not insert it */ return(&fallback); } - - if (tmpp != NULL) /* old entry - should not happen */ - { + /* If a race occured in this function and we came second, tmpp + * is the first one that we just replaced. */ + if (tmpp) ERR_STATE_free(tmpp); - } } - return(ret); + return ret; } int ERR_get_next_error_library(void) { - static int value=ERR_LIB_USER; - - return(value++); + err_fns_check(); + return ERRFN(get_next_lib)(); } void ERR_set_error_data(char *data, int flags) @@ -761,8 +1038,9 @@ void ERR_set_error_data(char *data, int flags) if (i == 0) i=ERR_NUM_ERRORS-1; + err_clear_data(es,i); es->err_data[i]=data; - es->err_data_flags[es->top]=flags; + es->err_data_flags[i]=flags; } void ERR_add_error_data(int num, ...) @@ -771,7 +1049,7 @@ void ERR_add_error_data(int num, ...) int i,n,s; char *str,*p,*a; - s=64; + s=80; str=OPENSSL_malloc(s+1); if (str == NULL) return; str[0]='\0'; @@ -792,16 +1070,46 @@ void ERR_add_error_data(int num, ...) if (p == NULL) { OPENSSL_free(str); - return; + goto err; } else str=p; } - strcat(str,a); + BUF_strlcat(str,a,(size_t)s+1); } } ERR_set_error_data(str,ERR_TXT_MALLOCED|ERR_TXT_STRING); +err: va_end(args); } +int ERR_set_mark(void) + { + ERR_STATE *es; + + es=ERR_get_state(); + + if (es->bottom == es->top) return 0; + es->err_flags[es->top]|=ERR_FLAG_MARK; + return 1; + } + +int ERR_pop_to_mark(void) + { + ERR_STATE *es; + + es=ERR_get_state(); + + while(es->bottom != es->top + && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) + { + err_clear(es,es->top); + es->top-=1; + if (es->top == -1) es->top=ERR_NUM_ERRORS; + } + + if (es->bottom == es->top) return 0; + es->err_flags[es->top]&=~ERR_FLAG_MARK; + return 1; + }