X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fasn1%2Fa_d2i_fp.c;h=49deb613226dd3784663fd573409d27e7b20f0fb;hp=776f26e08fae23e49f4d5ff156d1765e409a1494;hb=2747d73c1466c487daf64a1234b6fe2e8a62ac75;hpb=4b618848f9beb8271f24883694e097caa70013c0 diff --git a/crypto/asn1/a_d2i_fp.c b/crypto/asn1/a_d2i_fp.c index 776f26e08f..49deb61322 100644 --- a/crypto/asn1/a_d2i_fp.c +++ b/crypto/asn1/a_d2i_fp.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 @@ -65,222 +65,204 @@ static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb); #ifndef NO_OLD_ASN1 -#ifndef OPENSSL_NO_STDIO +# ifndef OPENSSL_NO_STDIO -void *ASN1_d2i_fp(void *(*xnew)(void), d2i_of_void *d2i, FILE *in, void **x) - { - BIO *b; - void *ret; +void *ASN1_d2i_fp(void *(*xnew) (void), d2i_of_void *d2i, FILE *in, void **x) +{ + BIO *b; + void *ret; - if ((b=BIO_new(BIO_s_file())) == NULL) - { - ASN1err(ASN1_F_ASN1_D2I_FP,ERR_R_BUF_LIB); - return(NULL); - } - BIO_set_fp(b,in,BIO_NOCLOSE); - ret=ASN1_d2i_bio(xnew,d2i,b,x); - BIO_free(b); - return(ret); - } -#endif + if ((b = BIO_new(BIO_s_file())) == NULL) { + ASN1err(ASN1_F_ASN1_D2I_FP, ERR_R_BUF_LIB); + return (NULL); + } + BIO_set_fp(b, in, BIO_NOCLOSE); + ret = ASN1_d2i_bio(xnew, d2i, b, x); + BIO_free(b); + return (ret); +} +# endif -void *ASN1_d2i_bio(void *(*xnew)(void), d2i_of_void *d2i, BIO *in, void **x) - { - BUF_MEM *b = NULL; - const unsigned char *p; - void *ret=NULL; - int len; +void *ASN1_d2i_bio(void *(*xnew) (void), d2i_of_void *d2i, BIO *in, void **x) +{ + BUF_MEM *b = NULL; + const unsigned char *p; + void *ret = NULL; + int len; - len = asn1_d2i_read_bio(in, &b); - if(len < 0) goto err; + len = asn1_d2i_read_bio(in, &b); + if (len < 0) + goto err; - p=(unsigned char *)b->data; - ret=d2i(x,&p,len); -err: - if (b != NULL) BUF_MEM_free(b); - return(ret); - } + p = (unsigned char *)b->data; + ret = d2i(x, &p, len); + err: + if (b != NULL) + BUF_MEM_free(b); + return (ret); +} #endif void *ASN1_item_d2i_bio(const ASN1_ITEM *it, BIO *in, void *x) - { - BUF_MEM *b = NULL; - const unsigned char *p; - void *ret=NULL; - int len; +{ + BUF_MEM *b = NULL; + const unsigned char *p; + void *ret = NULL; + int len; - len = asn1_d2i_read_bio(in, &b); - if(len < 0) goto err; + len = asn1_d2i_read_bio(in, &b); + if (len < 0) + goto err; - p=(const unsigned char *)b->data; - ret=ASN1_item_d2i(x,&p,len, it); -err: - if (b != NULL) BUF_MEM_free(b); - return(ret); - } + p = (const unsigned char *)b->data; + ret = ASN1_item_d2i(x, &p, len, it); + err: + if (b != NULL) + BUF_MEM_free(b); + return (ret); +} #ifndef OPENSSL_NO_STDIO void *ASN1_item_d2i_fp(const ASN1_ITEM *it, FILE *in, void *x) - { - BIO *b; - char *ret; +{ + BIO *b; + char *ret; - if ((b=BIO_new(BIO_s_file())) == NULL) - { - ASN1err(ASN1_F_ASN1_ITEM_D2I_FP,ERR_R_BUF_LIB); - return(NULL); - } - BIO_set_fp(b,in,BIO_NOCLOSE); - ret=ASN1_item_d2i_bio(it,b,x); - BIO_free(b); - return(ret); - } + if ((b = BIO_new(BIO_s_file())) == NULL) { + ASN1err(ASN1_F_ASN1_ITEM_D2I_FP, ERR_R_BUF_LIB); + return (NULL); + } + BIO_set_fp(b, in, BIO_NOCLOSE); + ret = ASN1_item_d2i_bio(it, b, x); + BIO_free(b); + return (ret); +} #endif #define HEADER_SIZE 8 static int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb) - { - BUF_MEM *b; - unsigned char *p; - int i; - ASN1_const_CTX c; - size_t want=HEADER_SIZE; - int eos=0; - size_t off=0; - size_t len=0; +{ + BUF_MEM *b; + unsigned char *p; + int i; + ASN1_const_CTX c; + size_t want = HEADER_SIZE; + int eos = 0; + size_t off = 0; + size_t len = 0; - b=BUF_MEM_new(); - if (b == NULL) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ERR_R_MALLOC_FAILURE); - return -1; - } + b = BUF_MEM_new(); + if (b == NULL) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE); + return -1; + } - ERR_clear_error(); - for (;;) - { - if (want >= (len-off)) - { - want-=(len-off); + ERR_clear_error(); + for (;;) { + if (want >= (len - off)) { + want -= (len - off); - if (len + want < len || !BUF_MEM_grow_clean(b,len+want)) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ERR_R_MALLOC_FAILURE); - goto err; - } - i=BIO_read(in,&(b->data[len]),want); - if ((i < 0) && ((len-off) == 0)) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_NOT_ENOUGH_DATA); - goto err; - } - if (i > 0) - { - if (len+i < len) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_TOO_LONG); - goto err; - } - len+=i; - } - } - /* else data already loaded */ + if (len + want < len || !BUF_MEM_grow_clean(b, len + want)) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE); + goto err; + } + i = BIO_read(in, &(b->data[len]), want); + if ((i < 0) && ((len - off) == 0)) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_NOT_ENOUGH_DATA); + goto err; + } + if (i > 0) { + if (len + i < len) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG); + goto err; + } + len += i; + } + } + /* else data already loaded */ - p=(unsigned char *)&(b->data[off]); - c.p=p; - c.inf=ASN1_get_object(&(c.p),&(c.slen),&(c.tag),&(c.xclass), - len-off); - if (c.inf & 0x80) - { - unsigned long e; + p = (unsigned char *)&(b->data[off]); + c.p = p; + c.inf = ASN1_get_object(&(c.p), &(c.slen), &(c.tag), &(c.xclass), + len - off); + if (c.inf & 0x80) { + unsigned long e; - e=ERR_GET_REASON(ERR_peek_error()); - if (e != ASN1_R_TOO_LONG) - goto err; - else - ERR_clear_error(); /* clear error */ - } - i=c.p-p;/* header length */ - off+=i; /* end of data */ + e = ERR_GET_REASON(ERR_peek_error()); + if (e != ASN1_R_TOO_LONG) + goto err; + else + ERR_clear_error(); /* clear error */ + } + i = c.p - p; /* header length */ + off += i; /* end of data */ - if (c.inf & 1) - { - /* no data body so go round again */ - eos++; - if (eos < 0) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_HEADER_TOO_LONG); - goto err; - } - want=HEADER_SIZE; - } - else if (eos && (c.slen == 0) && (c.tag == V_ASN1_EOC)) - { - /* eos value, so go back and read another header */ - eos--; - if (eos <= 0) - break; - else - want=HEADER_SIZE; - } - else - { - /* suck in c.slen bytes of data */ - want=c.slen; - if (want > (len-off)) - { - want-=(len-off); - if (want > INT_MAX /* BIO_read takes an int length */ || - len+want < len) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_TOO_LONG); - goto err; - } - if (!BUF_MEM_grow_clean(b,len+want)) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ERR_R_MALLOC_FAILURE); - goto err; - } - while (want > 0) - { - i=BIO_read(in,&(b->data[len]),want); - if (i <= 0) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO, - ASN1_R_NOT_ENOUGH_DATA); - goto err; - } - /* This can't overflow because - * |len+want| didn't overflow. */ - len+=i; - want-=i; - } - } - if (off + c.slen < off) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_TOO_LONG); - goto err; - } - off+=c.slen; - if (eos <= 0) - { - break; - } - else - want=HEADER_SIZE; - } - } + if (c.inf & 1) { + /* no data body so go round again */ + eos++; + if (eos < 0) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_HEADER_TOO_LONG); + goto err; + } + want = HEADER_SIZE; + } else if (eos && (c.slen == 0) && (c.tag == V_ASN1_EOC)) { + /* eos value, so go back and read another header */ + eos--; + if (eos <= 0) + break; + else + want = HEADER_SIZE; + } else { + /* suck in c.slen bytes of data */ + want = c.slen; + if (want > (len - off)) { + want -= (len - off); + if (want > INT_MAX /* BIO_read takes an int length */ || + len + want < len) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG); + goto err; + } + if (!BUF_MEM_grow_clean(b, len + want)) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ERR_R_MALLOC_FAILURE); + goto err; + } + while (want > 0) { + i = BIO_read(in, &(b->data[len]), want); + if (i <= 0) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, + ASN1_R_NOT_ENOUGH_DATA); + goto err; + } + /* + * This can't overflow because |len+want| didn't + * overflow. + */ + len += i; + want -= i; + } + } + if (off + c.slen < off) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG); + goto err; + } + off += c.slen; + if (eos <= 0) { + break; + } else + want = HEADER_SIZE; + } + } - if (off > INT_MAX) - { - ASN1err(ASN1_F_ASN1_D2I_READ_BIO,ASN1_R_TOO_LONG); - goto err; - } + if (off > INT_MAX) { + ASN1err(ASN1_F_ASN1_D2I_READ_BIO, ASN1_R_TOO_LONG); + goto err; + } - *pb = b; - return off; -err: - if (b != NULL) BUF_MEM_free(b); - return -1; - } + *pb = b; + return off; + err: + if (b != NULL) + BUF_MEM_free(b); + return -1; +}