From 57d2f21782631c735ed134ee4fb0d682426e1522 Mon Sep 17 00:00:00 2001 From: "Dr. Stephen Henson" Date: Sun, 24 Dec 2000 18:02:33 +0000 Subject: [PATCH] New function X509V3_add_i2d() this is used for encoding, replacing and deleting extensions. Fix X509V3_get_d2i() so it uses takes note of new critical behaviour. --- CHANGES | 6 ++++ crypto/x509/x509.h | 6 ++++ crypto/x509/x509_ext.c | 19 +++++++++++ crypto/x509v3/v3_lib.c | 76 +++++++++++++++++++++++++++++++++++++++++- crypto/x509v3/v3err.c | 3 ++ crypto/x509v3/x509v3.h | 16 +++++++++ 6 files changed, 125 insertions(+), 1 deletion(-) diff --git a/CHANGES b/CHANGES index e088fadcba..167048fa6a 100644 --- a/CHANGES +++ b/CHANGES @@ -3,6 +3,12 @@ Changes between 0.9.6 and 0.9.7 [xx XXX 2000] + *) New function X509V3_add1_i2d(). This automatically encodes and + adds an extension. Its behaviour can be customised with various + flags to append, replace or delete. Various wrappers added for + certifcates and CRLs. + [Steve Henson] + *) Fix to avoid calling the underlying ASN1 print routine when an extension cannot be parsed. Correct a typo in the OCSP_SERVICELOC extension. Tidy up print OCSP format. diff --git a/crypto/x509/x509.h b/crypto/x509/x509.h index 6ef1b48c02..24ba8618c2 100644 --- a/crypto/x509/x509.h +++ b/crypto/x509/x509.h @@ -1047,6 +1047,8 @@ X509_EXTENSION *X509_get_ext(X509 *x, int loc); X509_EXTENSION *X509_delete_ext(X509 *x, int loc); int X509_add_ext(X509 *x, X509_EXTENSION *ex, int loc); void * X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx); +int X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit, + unsigned long flags); int X509_CRL_get_ext_count(X509_CRL *x); int X509_CRL_get_ext_by_NID(X509_CRL *x, int nid, int lastpos); @@ -1056,6 +1058,8 @@ X509_EXTENSION *X509_CRL_get_ext(X509_CRL *x, int loc); X509_EXTENSION *X509_CRL_delete_ext(X509_CRL *x, int loc); int X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc); void * X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx); +int X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit, + unsigned long flags); int X509_REVOKED_get_ext_count(X509_REVOKED *x); int X509_REVOKED_get_ext_by_NID(X509_REVOKED *x, int nid, int lastpos); @@ -1065,6 +1069,8 @@ X509_EXTENSION *X509_REVOKED_get_ext(X509_REVOKED *x, int loc); X509_EXTENSION *X509_REVOKED_delete_ext(X509_REVOKED *x, int loc); int X509_REVOKED_add_ext(X509_REVOKED *x, X509_EXTENSION *ex, int loc); void * X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx); +int X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit, + unsigned long flags); X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, int crit, ASN1_OCTET_STRING *data); diff --git a/crypto/x509/x509_ext.c b/crypto/x509/x509_ext.c index 2955989807..9b602581ef 100644 --- a/crypto/x509/x509_ext.c +++ b/crypto/x509/x509_ext.c @@ -101,6 +101,12 @@ void *X509_CRL_get_ext_d2i(X509_CRL *x, int nid, int *crit, int *idx) return X509V3_get_d2i(x->crl->extensions, nid, crit, idx); } +int X509_CRL_add1_ext_i2d(X509_CRL *x, int nid, void *value, int crit, + unsigned long flags) +{ + return X509V3_add1_i2d(x->crl->extensions, nid, value, crit, flags); +} + int X509_CRL_add_ext(X509_CRL *x, X509_EXTENSION *ex, int loc) { return(X509v3_add_ext(&(x->crl->extensions),ex,loc) != NULL); @@ -146,6 +152,13 @@ void *X509_get_ext_d2i(X509 *x, int nid, int *crit, int *idx) return X509V3_get_d2i(x->cert_info->extensions, nid, crit, idx); } +int X509_add1_ext_i2d(X509 *x, int nid, void *value, int crit, + unsigned long flags) +{ + return X509V3_add1_i2d(x->cert_info->extensions, nid, value, crit, + flags); +} + int X509_REVOKED_get_ext_count(X509_REVOKED *x) { return(X509v3_get_ext_count(x->extensions)); @@ -187,5 +200,11 @@ void *X509_REVOKED_get_ext_d2i(X509_REVOKED *x, int nid, int *crit, int *idx) return X509V3_get_d2i(x->extensions, nid, crit, idx); } +int X509_REVOKED_add1_ext_i2d(X509_REVOKED *x, int nid, void *value, int crit, + unsigned long flags) +{ + return X509V3_add1_i2d(x->extensions, nid, value, crit, flags); +} + IMPLEMENT_STACK_OF(X509_EXTENSION) IMPLEMENT_ASN1_SET_OF(X509_EXTENSION) diff --git a/crypto/x509v3/v3_lib.c b/crypto/x509v3/v3_lib.c index 33765118c2..844cee1c14 100644 --- a/crypto/x509v3/v3_lib.c +++ b/crypto/x509v3/v3_lib.c @@ -213,7 +213,7 @@ void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx) } if(found_ex) { /* Found it */ - if(crit) *crit = found_ex->critical; + if(crit) *crit = X509_EXTENSION_get_critical(found_ex); return X509V3_EXT_d2i(found_ex); } @@ -223,4 +223,78 @@ void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx) return NULL; } +/* This function is a general extension append, replace and delete utility. + * The precise operation is governed by the 'flags' value. The 'crit' and + * 'value' arguments (if relevant) are the extensions internal structure. + */ + +int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) *x, int nid, void *value, + int crit, unsigned long flags) +{ + int extidx = -1; + int errcode; + X509_EXTENSION *ext, *extmp; + unsigned long ext_op = flags & X509V3_ADD_OP_MASK; + + /* If appending we don't care if it exists, otherwise + * look for existing extension. + */ + if(ext_op != X509V3_ADD_APPEND) + extidx = X509v3_get_ext_by_NID(x, nid, -1); + + /* See if extension exists */ + if(extidx >= 0) { + /* If keep existing, nothing to do */ + if(ext_op == X509V3_ADD_KEEP_EXISTING) + return 1; + /* If default then its an error */ + if(ext_op == X509V3_ADD_DEFAULT) { + errcode = X509V3_R_EXTENSION_EXISTS; + goto err; + } + /* If delete, just delete it */ + if(ext_op == X509V3_ADD_DELETE) { + if(!sk_X509_EXTENSION_delete(x, extidx)) return -1; + return 1; + } + } else { + /* If replace existing or delete, error since + * extension must exist + */ + if((ext_op == X509V3_ADD_REPLACE_EXISTING) || + (ext_op == X509V3_ADD_DELETE)) { + errcode = X509V3_R_EXTENSION_NOT_FOUND; + goto err; + } + } + + /* If we get this far then we have to create an extension: + * could have some flags for alternative encoding schemes... + */ + + ext = X509V3_EXT_i2d(nid, crit, value); + + if(!ext) { + X509V3err(X509V3_F_X509V3_ADD_I2D, X509V3_R_ERROR_CREATING_EXTENSION); + return -1; + } + + /* If extension exists replace it.. */ + if(extidx >= 0) { + extmp = sk_X509_EXTENSION_value(x, extidx); + X509_EXTENSION_free(extmp); + if(!sk_X509_EXTENSION_set(x, extidx, ext)) return -1; + return 1; + } + + if(!sk_X509_EXTENSION_push(x, ext)) return -1; + + return 1; + + err: + if(!(flags & X509V3_ADD_SILENT)) + X509V3err(X509V3_F_X509V3_ADD_I2D, errcode); + return 0; +} + IMPLEMENT_STACK_OF(X509V3_EXT_METHOD) diff --git a/crypto/x509v3/v3err.c b/crypto/x509v3/v3err.c index aa4a605dc4..1a8b7d5782 100644 --- a/crypto/x509v3/v3err.c +++ b/crypto/x509v3/v3err.c @@ -98,6 +98,7 @@ static ERR_STRING_DATA X509V3_str_functs[]= {ERR_PACK(0,X509V3_F_V2I_GENERAL_NAME,0), "v2i_GENERAL_NAME"}, {ERR_PACK(0,X509V3_F_V2I_GENERAL_NAMES,0), "v2i_GENERAL_NAMES"}, {ERR_PACK(0,X509V3_F_V3_GENERIC_EXTENSION,0), "V3_GENERIC_EXTENSION"}, +{ERR_PACK(0,X509V3_F_X509V3_ADD_I2D,0), "X509V3_ADD_I2D"}, {ERR_PACK(0,X509V3_F_X509V3_ADD_VALUE,0), "X509V3_add_value"}, {ERR_PACK(0,X509V3_F_X509V3_EXT_ADD,0), "X509V3_EXT_add"}, {ERR_PACK(0,X509V3_F_X509V3_EXT_ADD_ALIAS,0), "X509V3_EXT_add_alias"}, @@ -117,8 +118,10 @@ static ERR_STRING_DATA X509V3_str_reasons[]= {X509V3_R_BN_TO_ASN1_INTEGER_ERROR ,"bn to asn1 integer error"}, {X509V3_R_DUPLICATE_ZONE_ID ,"duplicate zone id"}, {X509V3_R_ERROR_CONVERTING_ZONE ,"error converting zone"}, +{X509V3_R_ERROR_CREATING_EXTENSION ,"error creating extension"}, {X509V3_R_ERROR_IN_EXTENSION ,"error in extension"}, {X509V3_R_EXPECTED_A_SECTION_NAME ,"expected a section name"}, +{X509V3_R_EXTENSION_EXISTS ,"extension exists"}, {X509V3_R_EXTENSION_NAME_ERROR ,"extension name error"}, {X509V3_R_EXTENSION_NOT_FOUND ,"extension not found"}, {X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED,"extension setting not supported"}, diff --git a/crypto/x509v3/x509v3.h b/crypto/x509v3/x509v3.h index 487d156743..6678db33c4 100644 --- a/crypto/x509v3/x509v3.h +++ b/crypto/x509v3/x509v3.h @@ -386,6 +386,17 @@ typedef struct x509_purpose_st { /* BIO_dump unknown extensions */ #define X509V3_EXT_DUMP_UNKNOWN (3L << 16) +/* Flags for X509V3_add1_i2d */ + +#define X509V3_ADD_OP_MASK 0xfL +#define X509V3_ADD_DEFAULT 0L +#define X509V3_ADD_APPEND 1L +#define X509V3_ADD_REPLACE 2L +#define X509V3_ADD_REPLACE_EXISTING 3L +#define X509V3_ADD_KEEP_EXISTING 4L +#define X509V3_ADD_DELETE 5L +#define X509V3_ADD_SILENT 0x10 + DECLARE_STACK_OF(X509_PURPOSE) void ERR_load_X509V3_strings(void); @@ -487,7 +498,9 @@ STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line); void *X509V3_EXT_d2i(X509_EXTENSION *ext); void *X509V3_get_d2i(STACK_OF(X509_EXTENSION) *x, int nid, int *crit, int *idx); + X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc); +int X509V3_add1_i2d(STACK_OF(X509_EXTENSION) *x, int nid, void *value, int crit, unsigned long flags); char *hex_to_string(unsigned char *buffer, long len); unsigned char *string_to_hex(char *str, long *len); @@ -560,6 +573,7 @@ void X509_email_free(STACK *sk); #define X509V3_F_V2I_GENERAL_NAME 117 #define X509V3_F_V2I_GENERAL_NAMES 118 #define X509V3_F_V3_GENERIC_EXTENSION 116 +#define X509V3_F_X509V3_ADD_I2D 140 #define X509V3_F_X509V3_ADD_VALUE 105 #define X509V3_F_X509V3_EXT_ADD 104 #define X509V3_F_X509V3_EXT_ADD_ALIAS 106 @@ -576,8 +590,10 @@ void X509_email_free(STACK *sk); #define X509V3_R_BN_TO_ASN1_INTEGER_ERROR 101 #define X509V3_R_DUPLICATE_ZONE_ID 133 #define X509V3_R_ERROR_CONVERTING_ZONE 131 +#define X509V3_R_ERROR_CREATING_EXTENSION 144 #define X509V3_R_ERROR_IN_EXTENSION 128 #define X509V3_R_EXPECTED_A_SECTION_NAME 137 +#define X509V3_R_EXTENSION_EXISTS 145 #define X509V3_R_EXTENSION_NAME_ERROR 115 #define X509V3_R_EXTENSION_NOT_FOUND 102 #define X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED 103 -- 2.34.1