From d02b48c63a58ea4367a0e905979f140b7d090f86 Mon Sep 17 00:00:00 2001 From: "Ralf S. Engelschall" Date: Mon, 21 Dec 1998 10:52:47 +0000 Subject: Import of old SSLeay release: SSLeay 0.8.1b --- crypto/stack/stack.c | 299 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 299 insertions(+) create mode 100644 crypto/stack/stack.c (limited to 'crypto/stack/stack.c') diff --git a/crypto/stack/stack.c b/crypto/stack/stack.c new file mode 100644 index 0000000000..712089ef31 --- /dev/null +++ b/crypto/stack/stack.c @@ -0,0 +1,299 @@ +/* crypto/stack/stack.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.] + */ + +/* Code for stacks + * Author - Eric Young v 1.0 + * 1.2 eay 12-Mar-97 - Modified sk_find so that it _DOES_ return the + * lowest index for the seached item. + * + * 1.1 eay - Take from netdb and added to SSLeay + * + * 1.0 eay - First version 29/07/92 + */ +#include +#include "cryptlib.h" +#include "stack.h" + +#undef MIN_NODES +#define MIN_NODES 4 + +char *STACK_version="STACK part of SSLeay 0.8.1b 29-Jun-1998"; + +#ifndef NOPROTO +#define FP_ICC (int (*)(const void *,const void *)) +#else +#define FP_ICC +#endif + +#include + +void sk_set_cmp_func(sk,c) +STACK *sk; +int (*c)(); + { + if (sk->comp != c) + sk->sorted=0; + sk->comp=c; + } + +STACK *sk_dup(sk) +STACK *sk; + { + STACK *ret; + char **s; + + if ((ret=sk_new(sk->comp)) == NULL) goto err; + s=(char **)Realloc((char *)ret->data, + (unsigned int)sizeof(char *)*sk->num_alloc); + if (s == NULL) goto err; + ret->data=s; + + ret->num=sk->num; + memcpy(ret->data,sk->data,sizeof(char *)*sk->num); + ret->sorted=sk->sorted; + ret->num_alloc=sk->num_alloc; + ret->comp=sk->comp; + return(ret); +err: + return(NULL); + } + +STACK *sk_new(c) +int (*c)(); + { + STACK *ret; + int i; + + if ((ret=(STACK *)Malloc(sizeof(STACK))) == NULL) + goto err0; + if ((ret->data=(char **)Malloc(sizeof(char *)*MIN_NODES)) == NULL) + goto err1; + for (i=0; idata[i]=NULL; + ret->comp=c; + ret->num_alloc=MIN_NODES; + ret->num=0; + ret->sorted=0; + return(ret); +err1: + Free((char *)ret); +err0: + return(NULL); + } + +int sk_insert(st,data,loc) +STACK *st; +char *data; +int loc; + { + char **s; + + if (st->num_alloc <= st->num+1) + { + s=(char **)Realloc((char *)st->data, + (unsigned int)sizeof(char *)*st->num_alloc*2); + if (s == NULL) + return(0); + st->data=s; + st->num_alloc*=2; + } + if ((loc >= (int)st->num) || (loc < 0)) + st->data[st->num]=data; + else + { + int i; + char **f,**t; + + f=(char **)st->data; + t=(char **)&(st->data[1]); + for (i=st->num; i>loc; i--) + t[i]=f[i]; + +#ifdef undef /* no memmove on sunos :-( */ + memmove( (char *)&(st->data[loc+1]), + (char *)&(st->data[loc]), + sizeof(char *)*(st->num-loc)); +#endif + st->data[loc]=data; + } + st->num++; + st->sorted=0; + return(st->num); + } + +char *sk_delete_ptr(st,p) +STACK *st; +char *p; + { + int i; + + for (i=0; inum; i++) + if (st->data[i] == p) + return(sk_delete(st,i)); + return(NULL); + } + +char *sk_delete(st,loc) +STACK *st; +int loc; + { + char *ret; + + if ((st->num == 0) || (loc < 0) || (loc >= st->num)) return(NULL); + + ret=st->data[loc]; + if (loc != st->num-1) + memcpy( &(st->data[loc]), + &(st->data[loc+1]), + sizeof(char *)*(st->num-loc-1)); + st->num--; + return(ret); + } + +int sk_find(st,data) +STACK *st; +char *data; + { + char **r; + int i; + int (*comp_func)(); + + if (st->comp == NULL) + { + for (i=0; inum; i++) + if (st->data[i] == data) + return(i); + return(-1); + } + comp_func=(int (*)())st->comp; + if (!st->sorted) + { + qsort((char *)st->data,st->num,sizeof(char *),FP_ICC comp_func); + st->sorted=1; + } + if (data == NULL) return(-1); + r=(char **)bsearch(&data,(char *)st->data, + st->num,sizeof(char *),FP_ICC comp_func); + if (r == NULL) return(-1); + i=(int)(r-st->data); + for ( ; i>0; i--) + if ((*st->comp)(&(st->data[i-1]),&data) < 0) + break; + return(i); + } + +int sk_push(st,data) +STACK *st; +char *data; + { + return(sk_insert(st,data,st->num)); + } + +int sk_unshift(st,data) +STACK *st; +char *data; + { + return(sk_insert(st,data,0)); + } + +char *sk_shift(st) +STACK *st; + { + if (st == NULL) return(NULL); + if (st->num <= 0) return(NULL); + return(sk_delete(st,0)); + } + +char *sk_pop(st) +STACK *st; + { + if (st == NULL) return(NULL); + if (st->num <= 0) return(NULL); + return(sk_delete(st,st->num-1)); + } + +void sk_zero(st) +STACK *st; + { + if (st == NULL) return; + if (st->num <= 0) return; + memset((char *)st->data,0,sizeof(st->data)*st->num); + st->num=0; + } + +void sk_pop_free(st,func) +STACK *st; +void (*func)(); + { + int i; + + if (st == NULL) return; + for (i=0; inum; i++) + if (st->data[i] != NULL) + func(st->data[i]); + sk_free(st); + } + +void sk_free(st) +STACK *st; + { + if (st == NULL) return; + if (st->data != NULL) Free((char *)st->data); + Free((char *)st); + } + -- cgit v1.2.3