X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fa_bytes.c;h=12715a72809db6bef35b8ce22940be4f85ae33c4;hp=47a88aa952c363b6b695ba55802f15f32427a770;hb=2747d73c1466c487daf64a1234b6fe2e8a62ac75;hpb=51ca375e7e640c6f1441d74abcda731ef7306d0c diff --git a/crypto/asn1/a_bytes.c b/crypto/asn1/a_bytes.c index 47a88aa952..12715a7280 100644 --- a/crypto/asn1/a_bytes.c +++ b/crypto/asn1/a_bytes.c @@ -5,21 +5,21 @@ * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +34,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,7 +49,7 @@ * 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. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence @@ -58,266 +58,249 @@ #include #include "cryptlib.h" -#include +#include -static unsigned long tag2bit[32]={ -0, 0, 0, B_ASN1_BIT_STRING, /* tags 0 - 3 */ -B_ASN1_OCTET_STRING, 0, 0, B_ASN1_UNKNOWN,/* tags 4- 7 */ -B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN, B_ASN1_UNKNOWN,/* tags 8-11 */ -B_ASN1_UTF8STRING,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,B_ASN1_UNKNOWN,/* tags 12-15 */ -0, 0, B_ASN1_NUMERICSTRING,B_ASN1_PRINTABLESTRING, -B_ASN1_T61STRING,B_ASN1_VIDEOTEXSTRING,B_ASN1_IA5STRING,0, -0,B_ASN1_GRAPHICSTRING,B_ASN1_ISO64STRING,B_ASN1_GENERALSTRING, -B_ASN1_UNIVERSALSTRING,B_ASN1_UNKNOWN,B_ASN1_BMPSTRING,B_ASN1_UNKNOWN, - }; - -static int asn1_collate_primative(ASN1_STRING *a, ASN1_CTX *c); -/* type is a 'bitmap' of acceptable string types. +static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c); +/* + * type is a 'bitmap' of acceptable string types. */ -ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, unsigned char **pp, - long length, int type) - { - ASN1_STRING *ret=NULL; - unsigned char *p,*s; - long len; - int inf,tag,xclass; - int i=0; +ASN1_STRING *d2i_ASN1_type_bytes(ASN1_STRING **a, const unsigned char **pp, + long length, int type) +{ + ASN1_STRING *ret = NULL; + const unsigned char *p; + unsigned char *s; + long len; + int inf, tag, xclass; + int i = 0; - p= *pp; - inf=ASN1_get_object(&p,&len,&tag,&xclass,length); - if (inf & 0x80) goto err; + p = *pp; + inf = ASN1_get_object(&p, &len, &tag, &xclass, length); + if (inf & 0x80) + goto err; - if (tag >= 32) - { - i=ASN1_R_TAG_VALUE_TOO_HIGH;; - goto err; - } - if (!(tag2bit[tag] & type)) - { - i=ASN1_R_WRONG_TYPE; - goto err; - } + if (tag >= 32) { + i = ASN1_R_TAG_VALUE_TOO_HIGH; + goto err; + } + if (!(ASN1_tag2bit(tag) & type)) { + i = ASN1_R_WRONG_TYPE; + goto err; + } - /* If a bit-string, exit early */ - if (tag == V_ASN1_BIT_STRING) - return(d2i_ASN1_BIT_STRING(a,pp,length)); + /* If a bit-string, exit early */ + if (tag == V_ASN1_BIT_STRING) + return (d2i_ASN1_BIT_STRING(a, pp, length)); - if ((a == NULL) || ((*a) == NULL)) - { - if ((ret=ASN1_STRING_new()) == NULL) return(NULL); - } - else - ret=(*a); + if ((a == NULL) || ((*a) == NULL)) { + if ((ret = ASN1_STRING_new()) == NULL) + return (NULL); + } else + ret = (*a); - if (len != 0) - { - s=(unsigned char *)Malloc((int)len+1); - if (s == NULL) - { - i=ERR_R_MALLOC_FAILURE; - goto err; - } - memcpy(s,p,(int)len); - s[len]='\0'; - p+=len; - } - else - s=NULL; + if (len != 0) { + s = (unsigned char *)OPENSSL_malloc((int)len + 1); + if (s == NULL) { + i = ERR_R_MALLOC_FAILURE; + goto err; + } + memcpy(s, p, (int)len); + s[len] = '\0'; + p += len; + } else + s = NULL; - if (ret->data != NULL) Free(ret->data); - ret->length=(int)len; - ret->data=s; - ret->type=tag; - if (a != NULL) (*a)=ret; - *pp=p; - return(ret); -err: - ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES,i); - if ((ret != NULL) && ((a == NULL) || (*a != ret))) - ASN1_STRING_free(ret); - return(NULL); - } + if (ret->data != NULL) + OPENSSL_free(ret->data); + ret->length = (int)len; + ret->data = s; + ret->type = tag; + if (a != NULL) + (*a) = ret; + *pp = p; + return (ret); + err: + ASN1err(ASN1_F_D2I_ASN1_TYPE_BYTES, i); + if ((ret != NULL) && ((a == NULL) || (*a != ret))) + ASN1_STRING_free(ret); + return (NULL); +} int i2d_ASN1_bytes(ASN1_STRING *a, unsigned char **pp, int tag, int xclass) - { - int ret,r,constructed; - unsigned char *p; - - if (a == NULL) return(0); +{ + int ret, r, constructed; + unsigned char *p; - if (tag == V_ASN1_BIT_STRING) - return(i2d_ASN1_BIT_STRING(a,pp)); - - ret=a->length; - r=ASN1_object_size(0,ret,tag); - if (pp == NULL) return(r); - p= *pp; + if (a == NULL) + return (0); - if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET)) - constructed=1; - else - constructed=0; - ASN1_put_object(&p,constructed,ret,tag,xclass); - memcpy(p,a->data,a->length); - p+=a->length; - *pp= p; - return(r); - } + if (tag == V_ASN1_BIT_STRING) + return (i2d_ASN1_BIT_STRING(a, pp)); -ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, unsigned char **pp, long length, - int Ptag, int Pclass) - { - ASN1_STRING *ret=NULL; - unsigned char *p,*s; - long len; - int inf,tag,xclass; - int i=0; + ret = a->length; + r = ASN1_object_size(0, ret, tag); + if (pp == NULL) + return (r); + p = *pp; - if ((a == NULL) || ((*a) == NULL)) - { - if ((ret=ASN1_STRING_new()) == NULL) return(NULL); - } - else - ret=(*a); + if ((tag == V_ASN1_SEQUENCE) || (tag == V_ASN1_SET)) + constructed = 1; + else + constructed = 0; + ASN1_put_object(&p, constructed, ret, tag, xclass); + memcpy(p, a->data, a->length); + p += a->length; + *pp = p; + return (r); +} - p= *pp; - inf=ASN1_get_object(&p,&len,&tag,&xclass,length); - if (inf & 0x80) - { - i=ASN1_R_BAD_OBJECT_HEADER; - goto err; - } +ASN1_STRING *d2i_ASN1_bytes(ASN1_STRING **a, const unsigned char **pp, + long length, int Ptag, int Pclass) +{ + ASN1_STRING *ret = NULL; + const unsigned char *p; + unsigned char *s; + long len; + int inf, tag, xclass; + int i = 0; - if (tag != Ptag) - { - i=ASN1_R_WRONG_TAG; - goto err; - } + if ((a == NULL) || ((*a) == NULL)) { + if ((ret = ASN1_STRING_new()) == NULL) + return (NULL); + } else + ret = (*a); - if (inf & V_ASN1_CONSTRUCTED) - { - ASN1_CTX c; + p = *pp; + inf = ASN1_get_object(&p, &len, &tag, &xclass, length); + if (inf & 0x80) { + i = ASN1_R_BAD_OBJECT_HEADER; + goto err; + } - c.pp=pp; - c.p=p; - c.inf=inf; - c.slen=len; - c.tag=Ptag; - c.xclass=Pclass; - c.max=(length == 0)?0:(p+length); - if (!asn1_collate_primative(ret,&c)) - goto err; - else - { - p=c.p; - } - } - else - { - if (len != 0) - { - if ((ret->length < len) || (ret->data == NULL)) - { - if (ret->data != NULL) Free(ret->data); - s=(unsigned char *)Malloc((int)len + 1); - if (s == NULL) - { - i=ERR_R_MALLOC_FAILURE; - goto err; - } - } - else - s=ret->data; - memcpy(s,p,(int)len); - s[len] = '\0'; - p+=len; - } - else - { - s=NULL; - if (ret->data != NULL) Free(ret->data); - } + if (tag != Ptag) { + i = ASN1_R_WRONG_TAG; + goto err; + } - ret->length=(int)len; - ret->data=s; - ret->type=Ptag; - } + if (inf & V_ASN1_CONSTRUCTED) { + ASN1_const_CTX c; - if (a != NULL) (*a)=ret; - *pp=p; - return(ret); -err: - if ((ret != NULL) && ((a == NULL) || (*a != ret))) - ASN1_STRING_free(ret); - ASN1err(ASN1_F_D2I_ASN1_BYTES,i); - return(NULL); - } + c.pp = pp; + c.p = p; + c.inf = inf; + c.slen = len; + c.tag = Ptag; + c.xclass = Pclass; + c.max = (length == 0) ? 0 : (p + length); + if (!asn1_collate_primitive(ret, &c)) + goto err; + else { + p = c.p; + } + } else { + if (len != 0) { + if ((ret->length < len) || (ret->data == NULL)) { + if (ret->data != NULL) + OPENSSL_free(ret->data); + s = (unsigned char *)OPENSSL_malloc((int)len + 1); + if (s == NULL) { + i = ERR_R_MALLOC_FAILURE; + goto err; + } + } else + s = ret->data; + memcpy(s, p, (int)len); + s[len] = '\0'; + p += len; + } else { + s = NULL; + if (ret->data != NULL) + OPENSSL_free(ret->data); + } + ret->length = (int)len; + ret->data = s; + ret->type = Ptag; + } -/* We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapes - * them into the one struture that is then returned */ -/* There have been a few bug fixes for this function from - * Paul Keogh , many thanks to him */ -static int asn1_collate_primative(ASN1_STRING *a, ASN1_CTX *c) - { - ASN1_STRING *os=NULL; - BUF_MEM b; - int num; + if (a != NULL) + (*a) = ret; + *pp = p; + return (ret); + err: + if ((ret != NULL) && ((a == NULL) || (*a != ret))) + ASN1_STRING_free(ret); + ASN1err(ASN1_F_D2I_ASN1_BYTES, i); + return (NULL); +} - b.length=0; - b.max=0; - b.data=NULL; +/* + * We are about to parse 0..n d2i_ASN1_bytes objects, we are to collapse them + * into the one structure that is then returned + */ +/* + * There have been a few bug fixes for this function from Paul Keogh + * , many thanks to him + */ +static int asn1_collate_primitive(ASN1_STRING *a, ASN1_const_CTX *c) +{ + ASN1_STRING *os = NULL; + BUF_MEM b; + int num; - if (a == NULL) - { - c->error=ERR_R_PASSED_NULL_PARAMETER; - goto err; - } + b.length = 0; + b.max = 0; + b.data = NULL; - num=0; - for (;;) - { - if (c->inf & 1) - { - c->eos=ASN1_check_infinite_end(&c->p, - (long)(c->max-c->p)); - if (c->eos) break; - } - else - { - if (c->slen <= 0) break; - } + if (a == NULL) { + c->error = ERR_R_PASSED_NULL_PARAMETER; + goto err; + } - c->q=c->p; - if (d2i_ASN1_bytes(&os,&c->p,c->max-c->p,c->tag,c->xclass) - == NULL) - { - c->error=ERR_R_ASN1_LIB; - goto err; - } + num = 0; + for (;;) { + if (c->inf & 1) { + c->eos = ASN1_const_check_infinite_end(&c->p, + (long)(c->max - c->p)); + if (c->eos) + break; + } else { + if (c->slen <= 0) + break; + } - if (!BUF_MEM_grow(&b,num+os->length)) - { - c->error=ERR_R_BUF_LIB; - goto err; - } - memcpy(&(b.data[num]),os->data,os->length); - if (!(c->inf & 1)) - c->slen-=(c->p-c->q); - num+=os->length; - } + c->q = c->p; + if (d2i_ASN1_bytes(&os, &c->p, c->max - c->p, c->tag, c->xclass) + == NULL) { + c->error = ERR_R_ASN1_LIB; + goto err; + } - if (!asn1_Finish(c)) goto err; + if (!BUF_MEM_grow_clean(&b, num + os->length)) { + c->error = ERR_R_BUF_LIB; + goto err; + } + memcpy(&(b.data[num]), os->data, os->length); + if (!(c->inf & 1)) + c->slen -= (c->p - c->q); + num += os->length; + } - a->length=num; - if (a->data != NULL) Free(a->data); - a->data=(unsigned char *)b.data; - if (os != NULL) ASN1_STRING_free(os); - return(1); -err: - ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE,c->error); - if (os != NULL) ASN1_STRING_free(os); - if (b.data != NULL) Free(b.data); - return(0); - } + if (!asn1_const_Finish(c)) + goto err; + a->length = num; + if (a->data != NULL) + OPENSSL_free(a->data); + a->data = (unsigned char *)b.data; + if (os != NULL) + ASN1_STRING_free(os); + return (1); + err: + ASN1err(ASN1_F_ASN1_COLLATE_PRIMITIVE, c->error); + if (os != NULL) + ASN1_STRING_free(os); + if (b.data != NULL) + OPENSSL_free(b.data); + return (0); +}