1 files changed, 623 insertions, 0 deletions

diff --git a/src/lib/libcrypto/conf/conf_mod.c b/src/lib/libcrypto/conf/conf_mod.c
new file mode 100644
index 0000000000..df1642a0a5
--- /dev/null
+++ b/src/lib/libcrypto/conf/conf_mod.c
@@ -0,0 +1,623 @@
+/* conf_mod.c */
+/* Written by Stephen Henson (steve@openssl.org) for the OpenSSL
+ * project 2001.
+ */
+/* ====================================================================
+ * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <openssl/crypto.h>
+#include "cryptlib.h"
+#include <openssl/conf.h>
+#include <openssl/dso.h>
+#include <openssl/x509.h>
+
+
+#define DSO_mod_init_name "OPENSSL_init"
+#define DSO_mod_finish_name "OPENSSL_finish"
+
+
+/* This structure contains a data about supported modules.
+ * entries in this table correspond to either dynamic or
+ * static modules.
+ */
+
+struct conf_module_st
+        {
+        /* DSO of this module or NULL if static */
+        DSO *dso;
+        /* Name of the module */
+        char *name;
+        /* Init function */
+        conf_init_func *init; 
+        /* Finish function */
+        conf_finish_func *finish;
+        /* Number of successfully initialized modules */
+        int links;
+        void *usr_data;
+        };
+
+
+/* This structure contains information about modules that have been
+ * successfully initialized. There may be more than one entry for a
+ * given module.
+ */
+
+struct conf_imodule_st
+        {
+        CONF_MODULE *pmod;
+        char *name;
+        char *value;
+        unsigned long flags;
+        void *usr_data;
+        };
+
+static STACK_OF(CONF_MODULE) *supported_modules = NULL;
+static STACK_OF(CONF_IMODULE) *initialized_modules = NULL;
+
+static void module_free(CONF_MODULE *md);
+static void module_finish(CONF_IMODULE *imod);
+static int module_run(const CONF *cnf, char *name, char *value,
+                                          unsigned long flags);
+static CONF_MODULE *module_add(DSO *dso, const char *name,
+                        conf_init_func *ifunc, conf_finish_func *ffunc);
+static CONF_MODULE *module_find(char *name);
+static int module_init(CONF_MODULE *pmod, char *name, char *value,
+                                           const CONF *cnf);
+static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value,
+                                                                        unsigned long flags);
+
+/* Main function: load modules from a CONF structure */
+
+int CONF_modules_load(const CONF *cnf, const char *appname,
+                      unsigned long flags)
+        {
+        STACK_OF(CONF_VALUE) *values;
+        CONF_VALUE *vl;
+        char *vsection = NULL;
+
+        int ret, i;
+
+        if (!cnf)
+                return 1;
+
+        if (appname)
+                vsection = NCONF_get_string(cnf, NULL, appname);
+
+        if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION)))
+                vsection = NCONF_get_string(cnf, NULL, "openssl_conf");
+
+        if (!vsection)
+                {
+                ERR_clear_error();
+                return 1;
+                }
+
+        values = NCONF_get_section(cnf, vsection);
+
+        if (!values)
+                return 0;
+
+        for (i = 0; i < sk_CONF_VALUE_num(values); i++)
+                {
+                vl = sk_CONF_VALUE_value(values, i);
+                ret = module_run(cnf, vl->name, vl->value, flags);
+                if (ret <= 0)
+                        if(!(flags & CONF_MFLAGS_IGNORE_ERRORS))
+                                return ret;
+                }
+
+        return 1;
+
+        }
+
+int CONF_modules_load_file(const char *filename, const char *appname,
+                           unsigned long flags)
+        {
+        char *file = NULL;
+        CONF *conf = NULL;
+        int ret = 0;
+        conf = NCONF_new(NULL);
+        if (!conf)
+                goto err;
+
+        if (filename == NULL)
+                {
+                file = CONF_get1_default_config_file();
+                if (!file)
+                        goto err;
+                }
+        else
+                file = (char *)filename;
+
+        if (NCONF_load(conf, file, NULL) <= 0)
+                {
+                if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) &&
+                  (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE))
+                        {
+                        ERR_clear_error();
+                        ret = 1;
+                        }
+                goto err;
+                }
+
+        ret = CONF_modules_load(conf, appname, flags);
+
+        err:
+        if (filename == NULL)
+                OPENSSL_free(file);
+        NCONF_free(conf);
+
+        return ret;
+        }
+
+static int module_run(const CONF *cnf, char *name, char *value,
+                      unsigned long flags)
+        {
+        CONF_MODULE *md;
+        int ret;
+
+        md = module_find(name);
+
+        /* Module not found: try to load DSO */
+        if (!md && !(flags & CONF_MFLAGS_NO_DSO))
+                md = module_load_dso(cnf, name, value, flags);
+
+        if (!md)
+                {
+                if (!(flags & CONF_MFLAGS_SILENT))
+                        {
+                        CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME);
+                        ERR_add_error_data(2, "module=", name);
+                        }
+                return -1;
+                }
+
+        ret = module_init(md, name, value, cnf);
+
+        if (ret <= 0)
+                {
+                if (!(flags & CONF_MFLAGS_SILENT))
+                        {
+                        char rcode[DECIMAL_SIZE(ret)+1];
+                        CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR);
+                        BIO_snprintf(rcode, sizeof rcode, "%-8d", ret);
+                        ERR_add_error_data(6, "module=", name, ", value=", value, ", retcode=", rcode);
+                        }
+                }
+
+        return ret;
+        }
+
+/* Load a module from a DSO */
+static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value,
+                                    unsigned long flags)
+        {
+        DSO *dso = NULL;
+        conf_init_func *ifunc;
+        conf_finish_func *ffunc;
+        char *path = NULL;
+        int errcode = 0;
+        CONF_MODULE *md;
+        /* Look for alternative path in module section */
+        path = NCONF_get_string(cnf, value, "path");
+        if (!path)
+                {
+                ERR_clear_error();
+                path = name;
+                }
+        dso = DSO_load(NULL, path, NULL, 0);
+        if (!dso)
+                {
+                errcode = CONF_R_ERROR_LOADING_DSO;
+                goto err;
+                }
+        ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name);
+        if (!ifunc)
+                {
+                errcode = CONF_R_MISSING_INIT_FUNCTION;
+                goto err;
+                }
+        ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name);
+        /* All OK, add module */
+        md = module_add(dso, name, ifunc, ffunc);
+
+        if (!md)
+                goto err;
+
+        return md;
+
+        err:
+        if (dso)
+                DSO_free(dso);
+        CONFerr(CONF_F_MODULE_LOAD_DSO, errcode);
+        ERR_add_error_data(4, "module=", name, ", path=", path);
+        return NULL;
+        }
+
+/* add module to list */
+static CONF_MODULE *module_add(DSO *dso, const char *name,
+                               conf_init_func *ifunc, conf_finish_func *ffunc)
+        {
+        CONF_MODULE *tmod = NULL;
+        if (supported_modules == NULL)
+                supported_modules = sk_CONF_MODULE_new_null();
+        if (supported_modules == NULL)
+                return NULL;
+        tmod = OPENSSL_malloc(sizeof(CONF_MODULE));
+        if (tmod == NULL)
+                return NULL;
+
+        tmod->dso = dso;
+        tmod->name = BUF_strdup(name);
+        tmod->init = ifunc;
+        tmod->finish = ffunc;
+        tmod->links = 0;
+
+        if (!sk_CONF_MODULE_push(supported_modules, tmod))
+                {
+                OPENSSL_free(tmod);
+                return NULL;
+                }
+
+        return tmod;
+        }
+
+/* Find a module from the list. We allow module names of the
+ * form modname.XXXX to just search for modname to allow the
+ * same module to be initialized more than once.
+ */
+
+static CONF_MODULE *module_find(char *name)
+        {
+        CONF_MODULE *tmod;
+        int i, nchar;
+        char *p;
+        p = strrchr(name, '.');
+
+        if (p)
+                nchar = p - name;
+        else 
+                nchar = strlen(name);
+
+        for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++)
+                {
+                tmod = sk_CONF_MODULE_value(supported_modules, i);
+                if (!strncmp(tmod->name, name, nchar))
+                        return tmod;
+                }
+
+        return NULL;
+
+        }
+
+/* initialize a module */
+static int module_init(CONF_MODULE *pmod, char *name, char *value,
+                       const CONF *cnf)
+        {
+        int ret = 1;
+        int init_called = 0;
+        CONF_IMODULE *imod = NULL;
+
+        /* Otherwise add initialized module to list */
+        imod = OPENSSL_malloc(sizeof(CONF_IMODULE));
+        if (!imod)
+                goto err;
+
+        imod->pmod = pmod;
+        imod->name = BUF_strdup(name);
+        imod->value = BUF_strdup(value);
+        imod->usr_data = NULL;
+
+        if (!imod->name || !imod->value)
+                goto memerr;
+
+        /* Try to initialize module */
+        if(pmod->init)
+                {
+                ret = pmod->init(imod, cnf);
+                init_called = 1;
+                /* Error occurred, exit */
+                if (ret <= 0)
+                        goto err;
+                }
+
+        if (initialized_modules == NULL)
+                {
+                initialized_modules = sk_CONF_IMODULE_new_null();
+                if (!initialized_modules)
+                        {
+                        CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
+                        goto err;
+                        }
+                }
+
+        if (!sk_CONF_IMODULE_push(initialized_modules, imod))
+                {
+                CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE);
+                goto err;
+                }
+
+        pmod->links++;
+
+        return ret;
+
+        err:
+
+        /* We've started the module so we'd better finish it */
+        if (pmod->finish && init_called)
+                pmod->finish(imod);
+
+        memerr:
+        if (imod)
+                {
+                if (imod->name)
+                        OPENSSL_free(imod->name);
+                if (imod->value)
+                        OPENSSL_free(imod->value);
+                OPENSSL_free(imod);
+                }
+
+        return -1;
+
+        }
+
+/* Unload any dynamic modules that have a link count of zero:
+ * i.e. have no active initialized modules. If 'all' is set
+ * then all modules are unloaded including static ones.
+ */
+
+void CONF_modules_unload(int all)
+        {
+        int i;
+        CONF_MODULE *md;
+        CONF_modules_finish();
+        /* unload modules in reverse order */
+        for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--)
+                {
+                md = sk_CONF_MODULE_value(supported_modules, i);
+                /* If static or in use and 'all' not set ignore it */
+                if (((md->links > 0) || !md->dso) && !all)
+                        continue;
+                /* Since we're working in reverse this is OK */
+                (void)sk_CONF_MODULE_delete(supported_modules, i);
+                module_free(md);
+                }
+        if (sk_CONF_MODULE_num(supported_modules) == 0)
+                {
+                sk_CONF_MODULE_free(supported_modules);
+                supported_modules = NULL;
+                }
+        }
+
+/* unload a single module */
+static void module_free(CONF_MODULE *md)
+        {
+        if (md->dso)
+                DSO_free(md->dso);
+        OPENSSL_free(md->name);
+        OPENSSL_free(md);
+        }
+
+/* finish and free up all modules instances */
+
+void CONF_modules_finish(void)
+        {
+        CONF_IMODULE *imod;
+        while (sk_CONF_IMODULE_num(initialized_modules) > 0)
+                {
+                imod = sk_CONF_IMODULE_pop(initialized_modules);
+                module_finish(imod);
+                }
+        sk_CONF_IMODULE_free(initialized_modules);
+        initialized_modules = NULL;
+        }
+
+/* finish a module instance */
+
+static void module_finish(CONF_IMODULE *imod)
+        {
+        if (imod->pmod->finish)
+                imod->pmod->finish(imod);
+        imod->pmod->links--;
+        OPENSSL_free(imod->name);
+        OPENSSL_free(imod->value);
+        OPENSSL_free(imod);
+        }
+
+/* Add a static module to OpenSSL */
+
+int CONF_module_add(const char *name, conf_init_func *ifunc, 
+                    conf_finish_func *ffunc)
+        {
+        if (module_add(NULL, name, ifunc, ffunc))
+                return 1;
+        else
+                return 0;
+        }
+
+void CONF_modules_free(void)
+        {
+        CONF_modules_finish();
+        CONF_modules_unload(1);
+        }
+
+/* Utility functions */
+
+const char *CONF_imodule_get_name(const CONF_IMODULE *md)
+        {
+        return md->name;
+        }
+
+const char *CONF_imodule_get_value(const CONF_IMODULE *md)
+        {
+        return md->value;
+        }
+
+void *CONF_imodule_get_usr_data(const CONF_IMODULE *md)
+        {
+        return md->usr_data;
+        }
+
+void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data)
+        {
+        md->usr_data = usr_data;
+        }
+
+CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md)
+        {
+        return md->pmod;
+        }
+
+unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md)
+        {
+        return md->flags;
+        }
+
+void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags)
+        {
+        md->flags = flags;
+        }
+
+void *CONF_module_get_usr_data(CONF_MODULE *pmod)
+        {
+        return pmod->usr_data;
+        }
+
+void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data)
+        {
+        pmod->usr_data = usr_data;
+        }
+
+/* Return default config file name */
+
+char *CONF_get1_default_config_file(void)
+        {
+        char *file;
+        int len;
+
+        file = getenv("OPENSSL_CONF");
+        if (file) 
+                return BUF_strdup(file);
+
+        len = strlen(X509_get_default_cert_area());
+#ifndef OPENSSL_SYS_VMS
+        len++;
+#endif
+        len += strlen(OPENSSL_CONF);
+
+        file = OPENSSL_malloc(len + 1);
+
+        if (!file)
+                return NULL;
+        BUF_strlcpy(file,X509_get_default_cert_area(),len + 1);
+#ifndef OPENSSL_SYS_VMS
+        BUF_strlcat(file,"/",len + 1);
+#endif
+        BUF_strlcat(file,OPENSSL_CONF,len + 1);
+
+        return file;
+        }
+
+/* This function takes a list separated by 'sep' and calls the
+ * callback function giving the start and length of each member
+ * optionally stripping leading and trailing whitespace. This can
+ * be used to parse comma separated lists for example.
+ */
+
+int CONF_parse_list(const char *list_, int sep, int nospc,
+        int (*list_cb)(const char *elem, int len, void *usr), void *arg)
+        {
+        int ret;
+        const char *lstart, *tmpend, *p;
+
+        if(list_ == NULL)
+                {
+                CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL);
+                return 0;
+                }
+
+        lstart = list_;
+        for(;;)
+                {
+                if (nospc)
+                        {
+                        while(*lstart && isspace((unsigned char)*lstart))
+                                lstart++;
+                        }
+                p = strchr(lstart, sep);
+                if (p == lstart || !*lstart)
+                        ret = list_cb(NULL, 0, arg);
+                else
+                        {
+                        if (p)
+                                tmpend = p - 1;
+                        else 
+                                tmpend = lstart + strlen(lstart) - 1;
+                        if (nospc)
+                                {
+                                while(isspace((unsigned char)*tmpend))
+                                        tmpend--;
+                                }
+                        ret = list_cb(lstart, tmpend - lstart + 1, arg);
+                        }
+                if (ret <= 0)
+                        return ret;
+                if (p == NULL)
+                        return 1;
+                lstart = p + 1;
+                }
+        }
+