conf_def.c

开源的ssl算法openssl,版本0.9.8H

			p++;
			*p='\0';

			if (!(v=(CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE))))
				{
				CONFerr(CONF_F_DEF_LOAD_BIO,
							ERR_R_MALLOC_FAILURE);
				goto err;
				}
			if (psection == NULL) psection=section;
			v->name=(char *)OPENSSL_malloc(strlen(pname)+1);
			v->value=NULL;
			if (v->name == NULL)
				{
				CONFerr(CONF_F_DEF_LOAD_BIO,
							ERR_R_MALLOC_FAILURE);
				goto err;
				}
			BUF_strlcpy(v->name,pname,strlen(pname)+1);
			if (!str_copy(conf,psection,&(v->value),start)) goto err;

			if (strcmp(psection,section) != 0)
				{
				if ((tv=_CONF_get_section(conf,psection))
					== NULL)
					tv=_CONF_new_section(conf,psection);
				if (tv == NULL)
					{
					CONFerr(CONF_F_DEF_LOAD_BIO,
					   CONF_R_UNABLE_TO_CREATE_NEW_SECTION);
					goto err;
					}
				ts=(STACK_OF(CONF_VALUE) *)tv->value;
				}
			else
				{
				tv=sv;
				ts=section_sk;
				}
#if 1
			if (_CONF_add_string(conf, tv, v) == 0)
				{
				CONFerr(CONF_F_DEF_LOAD_BIO,
							ERR_R_MALLOC_FAILURE);
				goto err;
				}
#else
			v->section=tv->section;	
			if (!sk_CONF_VALUE_push(ts,v))
				{
				CONFerr(CONF_F_DEF_LOAD_BIO,
							ERR_R_MALLOC_FAILURE);
				goto err;
				}
			vv=(CONF_VALUE *)lh_insert(conf->data,v);
			if (vv != NULL)
				{
				sk_CONF_VALUE_delete_ptr(ts,vv);
				OPENSSL_free(vv->name);
				OPENSSL_free(vv->value);
				OPENSSL_free(vv);
				}
#endif
			v=NULL;
			}
		}
	if (buff != NULL) BUF_MEM_free(buff);
	if (section != NULL) OPENSSL_free(section);
	return(1);
err:
	if (buff != NULL) BUF_MEM_free(buff);
	if (section != NULL) OPENSSL_free(section);
	if (line != NULL) *line=eline;
	BIO_snprintf(btmp,sizeof btmp,"%ld",eline);
	ERR_add_error_data(2,"line ",btmp);
	if ((h != conf->data) && (conf->data != NULL))
		{
		CONF_free(conf->data);
		conf->data=NULL;
		}
	if (v != NULL)
		{
		if (v->name != NULL) OPENSSL_free(v->name);
		if (v->value != NULL) OPENSSL_free(v->value);
		if (v != NULL) OPENSSL_free(v);
		}
	return(0);
	}

static void clear_comments(CONF *conf, char *p)
	{
	char *to;

	to=p;
	for (;;)
		{
		if (IS_FCOMMENT(conf,*p))
			{
			*p='\0';
			return;
			}
		if (!IS_WS(conf,*p))
			{
			break;
			}
		p++;
		}

	for (;;)
		{
		if (IS_COMMENT(conf,*p))
			{
			*p='\0';
			return;
			}
		if (IS_DQUOTE(conf,*p))
			{
			p=scan_dquote(conf, p);
			continue;
			}
		if (IS_QUOTE(conf,*p))
			{
			p=scan_quote(conf, p);
			continue;
			}
		if (IS_ESC(conf,*p))
			{
			p=scan_esc(conf,p);
			continue;
			}
		if (IS_EOF(conf,*p))
			return;
		else
			p++;
		}
	}

static int str_copy(CONF *conf, char *section, char **pto, char *from)
	{
	int q,r,rr=0,to=0,len=0;
	char *s,*e,*rp,*p,*rrp,*np,*cp,v;
	BUF_MEM *buf;

	if ((buf=BUF_MEM_new()) == NULL) return(0);

	len=strlen(from)+1;
	if (!BUF_MEM_grow(buf,len)) goto err;

	for (;;)
		{
		if (IS_QUOTE(conf,*from))
			{
			q= *from;
			from++;
			while (!IS_EOF(conf,*from) && (*from != q))
				{
				if (IS_ESC(conf,*from))
					{
					from++;
					if (IS_EOF(conf,*from)) break;
					}
				buf->data[to++]= *(from++);
				}
			if (*from == q) from++;
			}
		else if (IS_DQUOTE(conf,*from))
			{
			q= *from;
			from++;
			while (!IS_EOF(conf,*from))
				{
				if (*from == q)
					{
					if (*(from+1) == q)
						{
						from++;
						}
					else
						{
						break;
						}
					}
				buf->data[to++]= *(from++);
				}
			if (*from == q) from++;
			}
		else if (IS_ESC(conf,*from))
			{
			from++;
			v= *(from++);
			if (IS_EOF(conf,v)) break;
			else if (v == 'r') v='\r';
			else if (v == 'n') v='\n';
			else if (v == 'b') v='\b';
			else if (v == 't') v='\t';
			buf->data[to++]= v;
			}
		else if (IS_EOF(conf,*from))
			break;
		else if (*from == '$')
			{
			/* try to expand it */
			rrp=NULL;
			s= &(from[1]);
			if (*s == '{')
				q='}';
			else if (*s == '(')
				q=')';
			else q=0;

			if (q) s++;
			cp=section;
			e=np=s;
			while (IS_ALPHA_NUMERIC(conf,*e))
				e++;
			if ((e[0] == ':') && (e[1] == ':'))
				{
				cp=np;
				rrp=e;
				rr= *e;
				*rrp='\0';
				e+=2;
				np=e;
				while (IS_ALPHA_NUMERIC(conf,*e))
					e++;
				}
			r= *e;
			*e='\0';
			rp=e;
			if (q)
				{
				if (r != q)
					{
					CONFerr(CONF_F_STR_COPY,CONF_R_NO_CLOSE_BRACE);
					goto err;
					}
				e++;
				}
			/* So at this point we have
			 * np which is the start of the name string which is
			 *   '\0' terminated. 
			 * cp which is the start of the section string which is
			 *   '\0' terminated.
			 * e is the 'next point after'.
			 * r and rr are the chars replaced by the '\0'
			 * rp and rrp is where 'r' and 'rr' came from.
			 */
			p=_CONF_get_string(conf,cp,np);
			if (rrp != NULL) *rrp=rr;
			*rp=r;
			if (p == NULL)
				{
				CONFerr(CONF_F_STR_COPY,CONF_R_VARIABLE_HAS_NO_VALUE);
				goto err;
				}
			BUF_MEM_grow_clean(buf,(strlen(p)+buf->length-(e-from)));
			while (*p)
				buf->data[to++]= *(p++);

			/* Since we change the pointer 'from', we also have
			   to change the perceived length of the string it
			   points at.  /RL */
			len -= e-from;
			from=e;

			/* In case there were no braces or parenthesis around
			   the variable reference, we have to put back the
			   character that was replaced with a '\0'.  /RL */
			*rp = r;
			}
		else
			buf->data[to++]= *(from++);
		}
	buf->data[to]='\0';
	if (*pto != NULL) OPENSSL_free(*pto);
	*pto=buf->data;
	OPENSSL_free(buf);
	return(1);
err:
	if (buf != NULL) BUF_MEM_free(buf);
	return(0);
	}

static char *eat_ws(CONF *conf, char *p)
	{
	while (IS_WS(conf,*p) && (!IS_EOF(conf,*p)))
		p++;
	return(p);
	}

static char *eat_alpha_numeric(CONF *conf, char *p)
	{
	for (;;)
		{
		if (IS_ESC(conf,*p))
			{
			p=scan_esc(conf,p);
			continue;
			}
		if (!IS_ALPHA_NUMERIC_PUNCT(conf,*p))
			return(p);
		p++;
		}
	}

static char *scan_quote(CONF *conf, char *p)
	{
	int q= *p;

	p++;
	while (!(IS_EOF(conf,*p)) && (*p != q))
		{
		if (IS_ESC(conf,*p))
			{
			p++;
			if (IS_EOF(conf,*p)) return(p);
			}
		p++;
		}
	if (*p == q) p++;
	return(p);
	}


static char *scan_dquote(CONF *conf, char *p)
	{
	int q= *p;

	p++;
	while (!(IS_EOF(conf,*p)))
		{
		if (*p == q)
			{
			if (*(p+1) == q)
				{
				p++;
				}
			else
				{
				break;
				}
			}
		p++;
		}
	if (*p == q) p++;
	return(p);
	}

static void dump_value(CONF_VALUE *a, BIO *out)
	{
	if (a->name)
		BIO_printf(out, "[%s] %s=%s\n", a->section, a->name, a->value);
	else
		BIO_printf(out, "[[%s]]\n", a->section);
	}

static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_value, CONF_VALUE *, BIO *)

static int def_dump(const CONF *conf, BIO *out)
	{
	lh_doall_arg(conf->data, LHASH_DOALL_ARG_FN(dump_value), out);
	return 1;
	}

static int def_is_number(const CONF *conf, char c)
	{
	return IS_NUMBER(conf,c);
	}

static int def_to_int(const CONF *conf, char c)
	{
	return c - '0';
	}