X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fasn1%2Fa_enum.c;h=c3498ac99c71353b0e8e52cdfa93ed97b4b05dab;hb=52b703f81c0d1d419ca02c07a8422d46a5b3dbed;hp=9239ecc439a0ee477e7c60ae8e98d32816660e22;hpb=1ad2ecb66f24dc4d03e137b9f73224dc376ab5f4;p=oweals%2Fopenssl.git diff --git a/crypto/asn1/a_enum.c b/crypto/asn1/a_enum.c index 9239ecc439..c3498ac99c 100644 --- a/crypto/asn1/a_enum.c +++ b/crypto/asn1/a_enum.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 @@ -59,268 +59,123 @@ #include #include "cryptlib.h" #include +#include -/* +/* * Code for ENUMERATED type: identical to INTEGER apart from a different tag. * for comments on encoding see a_int.c */ -int i2d_ASN1_ENUMERATED(ASN1_ENUMERATED *a, unsigned char **pp) - { - int pad=0,ret,r,i,t; - unsigned char *p,*n,pb=0; - - if ((a == NULL) || (a->data == NULL)) return(0); - t=a->type; - if (a->length == 0) - ret=1; - else - { - ret=a->length; - i=a->data[0]; - if ((t == V_ASN1_ENUMERATED) && (i > 127)) { - pad=1; - pb=0; - } else if(t == V_ASN1_NEG_ENUMERATED) { - if(i>128) { - pad=1; - pb=0xFF; - } else if(i == 128) { - for(i = 1; i < a->length; i++) if(a->data[i]) { - pad=1; - pb=0xFF; - break; - } - } - } - ret+=pad; - } - r=ASN1_object_size(0,ret,V_ASN1_ENUMERATED); - if (pp == NULL) return(r); - p= *pp; - - ASN1_put_object(&p,0,ret,V_ASN1_ENUMERATED,V_ASN1_UNIVERSAL); - if (pad) *(p++)=pb; - if (a->length == 0) - *(p++)=0; - else if (t == V_ASN1_ENUMERATED) - { - memcpy(p,a->data,(unsigned int)a->length); - p+=a->length; - } - else { - /* Begin at the end of the encoding */ - n=a->data + a->length - 1; - p += a->length - 1; - i = a->length; - /* Copy zeros to destination as long as source is zero */ - while(!*n) { - *(p--) = 0; - n--; - i--; - } - /* Complement and increment next octet */ - *(p--) = ((*(n--)) ^ 0xff) + 1; - i--; - /* Complement any octets left */ - for(;i > 0; i--) *(p--) = *(n--) ^ 0xff; - p += a->length; - } - - *pp=p; - return(r); - } - -ASN1_ENUMERATED *d2i_ASN1_ENUMERATED(ASN1_ENUMERATED **a, unsigned char **pp, - long length) - { - ASN1_ENUMERATED *ret=NULL; - unsigned char *p,*to,*s; - long len; - int inf,tag,xclass; - int i; - - if ((a == NULL) || ((*a) == NULL)) - { - if ((ret=ASN1_ENUMERATED_new()) == NULL) return(NULL); - ret->type=V_ASN1_ENUMERATED; - } - else - ret=(*a); - - p= *pp; - inf=ASN1_get_object(&p,&len,&tag,&xclass,length); - if (inf & 0x80) - { - i=ASN1_R_BAD_OBJECT_HEADER; - goto err; - } - - if (tag != V_ASN1_ENUMERATED) - { - i=ASN1_R_EXPECTING_AN_ENUMERATED; - goto err; - } - - /* We must Malloc stuff, even for 0 bytes otherwise it - * signifies a missing NULL parameter. */ - s=(unsigned char *)Malloc((int)len+1); - if (s == NULL) - { - i=ERR_R_MALLOC_FAILURE; - goto err; - } - to=s; - if (*p & 0x80) /* a negative number */ - { - ret->type=V_ASN1_NEG_ENUMERATED; - if ((*p == 0xff) && (len != 1)) { - p++; - len--; - } - i = len; - p += i - 1; - to += i - 1; - while((!*p) && i) { - *(to--) = 0; - i--; - p--; - } - if(!i) { - *s = 1; - s[len] = 0; - p += len; - len++; - } else { - *(to--) = (*(p--) ^ 0xff) + 1; - i--; - for(;i > 0; i--) *(to--) = *(p--) ^ 0xff; - p += len; - } - } else { - ret->type=V_ASN1_ENUMERATED; - if ((*p == 0) && (len != 1)) - { - p++; - len--; - } - memcpy(s,p,(int)len); - p+=len; - } - - if (ret->data != NULL) Free((char *)ret->data); - ret->data=s; - ret->length=(int)len; - if (a != NULL) (*a)=ret; - *pp=p; - return(ret); -err: - ASN1err(ASN1_F_D2I_ASN1_ENUMERATED,i); - if ((ret != NULL) && ((a == NULL) || (*a != ret))) - ASN1_ENUMERATED_free(ret); - return(NULL); - } - int ASN1_ENUMERATED_set(ASN1_ENUMERATED *a, long v) - { - int i,j,k; - unsigned char buf[sizeof(long)+1]; - long d; - - a->type=V_ASN1_ENUMERATED; - if (a->length < (sizeof(long)+1)) - { - if (a->data != NULL) - Free((char *)a->data); - if ((a->data=(unsigned char *)Malloc(sizeof(long)+1)) != NULL) - memset((char *)a->data,0,sizeof(long)+1); - } - if (a->data == NULL) - { - ASN1err(ASN1_F_ASN1_ENUMERATED_SET,ERR_R_MALLOC_FAILURE); - return(0); - } - d=v; - if (d < 0) - { - d= -d; - a->type=V_ASN1_NEG_ENUMERATED; - } - - for (i=0; i>=8; - } - j=0; - for (k=i-1; k >=0; k--) - a->data[j++]=buf[k]; - a->length=j; - return(1); - } +{ + int j, k; + unsigned int i; + unsigned char buf[sizeof(long) + 1]; + long d; + + a->type = V_ASN1_ENUMERATED; + if (a->length < (int)(sizeof(long) + 1)) { + if (a->data != NULL) + OPENSSL_free(a->data); + if ((a->data = + (unsigned char *)OPENSSL_malloc(sizeof(long) + 1)) != NULL) + memset((char *)a->data, 0, sizeof(long) + 1); + } + if (a->data == NULL) { + ASN1err(ASN1_F_ASN1_ENUMERATED_SET, ERR_R_MALLOC_FAILURE); + return (0); + } + d = v; + if (d < 0) { + d = -d; + a->type = V_ASN1_NEG_ENUMERATED; + } + + for (i = 0; i < sizeof(long); i++) { + if (d == 0) + break; + buf[i] = (int)d & 0xff; + d >>= 8; + } + j = 0; + for (k = i - 1; k >= 0; k--) + a->data[j++] = buf[k]; + a->length = j; + return (1); +} long ASN1_ENUMERATED_get(ASN1_ENUMERATED *a) - { - int neg=0,i; - long r=0; - - if (a == NULL) return(0L); - i=a->type; - if (i == V_ASN1_NEG_ENUMERATED) - neg=1; - else if (i != V_ASN1_ENUMERATED) - return(0); - - if (a->length > sizeof(long)) - { - /* hmm... a bit ugly */ - return(0xffffffffL); - } - if (a->data == NULL) - return(0); - - for (i=0; ilength; i++) - { - r<<=8; - r|=(unsigned char)a->data[i]; - } - if (neg) r= -r; - return(r); - } +{ + int neg = 0, i; + long r = 0; + + if (a == NULL) + return (0L); + i = a->type; + if (i == V_ASN1_NEG_ENUMERATED) + neg = 1; + else if (i != V_ASN1_ENUMERATED) + return -1; + + if (a->length > (int)sizeof(long)) { + /* hmm... a bit ugly */ + return (0xffffffffL); + } + if (a->data == NULL) + return 0; + + for (i = 0; i < a->length; i++) { + r <<= 8; + r |= (unsigned char)a->data[i]; + } + if (neg) + r = -r; + return (r); +} ASN1_ENUMERATED *BN_to_ASN1_ENUMERATED(BIGNUM *bn, ASN1_ENUMERATED *ai) - { - ASN1_ENUMERATED *ret; - int len,j; - - if (ai == NULL) - ret=ASN1_ENUMERATED_new(); - else - ret=ai; - if (ret == NULL) - { - ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED,ERR_R_NESTED_ASN1_ERROR); - goto err; - } - if(bn->neg) ret->type = V_ASN1_NEG_ENUMERATED; - else ret->type=V_ASN1_ENUMERATED; - j=BN_num_bits(bn); - len=((j == 0)?0:((j/8)+1)); - ret->data=(unsigned char *)Malloc(len+4); - ret->length=BN_bn2bin(bn,ret->data); - return(ret); -err: - if (ret != ai) ASN1_ENUMERATED_free(ret); - return(NULL); - } +{ + ASN1_ENUMERATED *ret; + int len, j; + + if (ai == NULL) + ret = M_ASN1_ENUMERATED_new(); + else + ret = ai; + if (ret == NULL) { + ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED, ERR_R_NESTED_ASN1_ERROR); + goto err; + } + if (BN_is_negative(bn)) + ret->type = V_ASN1_NEG_ENUMERATED; + else + ret->type = V_ASN1_ENUMERATED; + j = BN_num_bits(bn); + len = ((j == 0) ? 0 : ((j / 8) + 1)); + if (ret->length < len + 4) { + unsigned char *new_data = OPENSSL_realloc(ret->data, len + 4); + if (!new_data) { + ASN1err(ASN1_F_BN_TO_ASN1_ENUMERATED, ERR_R_MALLOC_FAILURE); + goto err; + } + ret->data = new_data; + } + + ret->length = BN_bn2bin(bn, ret->data); + return (ret); + err: + if (ret != ai) + M_ASN1_ENUMERATED_free(ret); + return (NULL); +} BIGNUM *ASN1_ENUMERATED_to_BN(ASN1_ENUMERATED *ai, BIGNUM *bn) - { - BIGNUM *ret; - - if ((ret=BN_bin2bn(ai->data,ai->length,bn)) == NULL) - ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN,ASN1_R_BN_LIB); - if(ai->type == V_ASN1_NEG_ENUMERATED) bn->neg = 1; - return(ret); - } +{ + BIGNUM *ret; + + if ((ret = BN_bin2bn(ai->data, ai->length, bn)) == NULL) + ASN1err(ASN1_F_ASN1_ENUMERATED_TO_BN, ASN1_R_BN_LIB); + else if (ai->type == V_ASN1_NEG_ENUMERATED) + BN_set_negative(ret, 1); + return (ret); +}