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Diffstat (limited to 'crypto/evp/names.c')
| -rw-r--r-- | crypto/evp/names.c | 281 |
1 files changed, 281 insertions, 0 deletions
diff --git a/crypto/evp/names.c b/crypto/evp/names.c new file mode 100644 index 0000000000..49fd34f27f --- /dev/null +++ b/crypto/evp/names.c @@ -0,0 +1,281 @@ +/* crypto/evp/names.c */ +/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * 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: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * 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 + * 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 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * 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 + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include "evp.h" +#include "objects.h" + +typedef struct aliases_st { + char *alias; + /* This must be the last field becaue I will allocate things + * so they go off the end of it */ + char name[4]; + } ALIASES; + +static STACK /* ALIASES */ *aliases=NULL; +static STACK /* EVP_CIPHERS */ *ciphers=NULL; +static STACK /* EVP_MD */ *digests=NULL; + +static int cipher_nid_cmp(a,b) +EVP_CIPHER **a,**b; + { return((*a)->nid - (*b)->nid); } + +static int digest_type_cmp(a,b) +EVP_MD **a,**b; + { return((*a)->pkey_type - (*b)->pkey_type); } + +int EVP_add_cipher(c) +EVP_CIPHER *c; + { + int i; + + if (ciphers == NULL) + { + ciphers=sk_new(cipher_nid_cmp); + if (ciphers == NULL) return(0); + } + if ((i=sk_find(ciphers,(char *)c)) >= 0) + { + if (sk_value(ciphers,i) == (char *)c) + return(1); + sk_delete(ciphers,i); + } + return(sk_push(ciphers,(char *)c)); + } + +int EVP_add_digest(md) +EVP_MD *md; + { + int i; + char *n; + + if (digests == NULL) + { + digests=sk_new(digest_type_cmp); + if (digests == NULL) return(0); + } + if ((i=sk_find(digests,(char *)md)) >= 0) + { + if (sk_value(digests,i) == (char *)md) + return(1); + sk_delete(digests,i); + } + if (md->type != md->pkey_type) + { + n=OBJ_nid2sn(md->pkey_type); + EVP_add_alias(n,OBJ_nid2sn(md->type)); + EVP_add_alias(n,OBJ_nid2ln(md->type)); + } + sk_push(digests,(char *)md); + return(1); + } + +static int alias_cmp(a,b) +ALIASES **a,**b; + { + return(strcmp((*a)->alias,(*b)->alias)); + } + +int EVP_add_alias(name,aname) +char *name; +char *aname; + { + int l1,l2,i; + ALIASES *a; + char *p; + + if ((name == NULL) || (aname == NULL)) return(0); + l1=strlen(name)+1; + l2=strlen(aname)+1; + i=sizeof(ALIASES)+l1+l2; + if ((a=(ALIASES *)Malloc(i)) == NULL) + return(0); + strcpy(a->name,name); + p= &(a->name[l1]); + strcpy(p,aname); + a->alias=p; + + if (aliases == NULL) + { + aliases=sk_new(alias_cmp); + if (aliases == NULL) goto err; + } + + if ((i=sk_find(aliases,(char *)a)) >= 0) + Free(sk_delete(aliases,i)); + if (!sk_push(aliases,(char *)a)) goto err; + return(1); +err: + return(0); + } + +int EVP_delete_alias(name) +char *name; + { + ALIASES a; + int i; + + if (aliases != NULL) + { + a.alias=name; + if ((i=sk_find(aliases,(char *)&a)) >= 0) + { + Free(sk_delete(aliases,i)); + return(1); + } + } + return(0); + } + +EVP_CIPHER *EVP_get_cipherbyname(name) +char *name; + { + int nid,num=6,i; + EVP_CIPHER c,*cp; + ALIASES a,*ap; + + if (ciphers == NULL) return(NULL); + for (;;) + { + if (num-- <= 0) return(NULL); + if (aliases != NULL) + { + a.alias=name; + i=sk_find(aliases,(char *)&a); + if (i >= 0) + { + ap=(ALIASES *)sk_value(aliases,i); + name=ap->name; + continue; + } + } + + nid=OBJ_txt2nid(name); + c.nid=nid; + i=sk_find(ciphers,(char *)&c); + if (i >= 0) + { + cp=(EVP_CIPHER *)sk_value(ciphers,i); + return(cp); + } + else + return(NULL); + } + } + +EVP_MD *EVP_get_digestbyname(name) +char *name; + { + int nid,num=6,i; + EVP_MD c,*cp; + ALIASES a,*ap; + + if (digests == NULL) return(NULL); + + for (;;) + { + if (num-- <= 0) return(NULL); + + if (aliases != NULL) + { + a.alias=name; + i=sk_find(aliases,(char *)&a); + if (i >= 0) + { + ap=(ALIASES *)sk_value(aliases,i); + name=ap->name; + continue; + } + } + + nid=OBJ_txt2nid(name); + c.pkey_type=nid; + i=sk_find(digests,(char *)&c); + if (i >= 0) + { + cp=(EVP_MD *)sk_value(digests,i); + return(cp); + } + else + return(NULL); + } + } + +void EVP_cleanup() + { + int i; + + if (aliases != NULL) + { + for (i=0; i<sk_num(aliases); i++) + Free(sk_value(aliases,i)); + sk_free(aliases); + aliases=NULL; + } + if (ciphers != NULL) + { + sk_free(ciphers); + ciphers=NULL; + } + if (digests != NULL) + { + sk_free(digests); + digests=NULL; + } + } |