Various clarifications to extension docs: change the name of literal
[openssl.git] / crypto / x509v3 / v3_conf.c
index 78dd9954aed87a062aa83be15ace9d22b9acd684..aca8ff1f086930e3de19d9e919d7b97a6627a61f 100644 (file)
 #include <stdio.h>
 #include <ctype.h>
 #include "cryptlib.h"
-#include "conf.h"
-#include "x509.h"
-#include "x509v3.h"
+#include <openssl/conf.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
 
-#ifndef NOPROTO
 static int v3_check_critical(char **value);
 static int v3_check_generic(char **value);
 static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
-static X509_EXTENSION *v3_generic_extension(char *ext, char *value, int crit, int type);
-#else
-static int v3_check_critical();
-static int v3_check_generic();
-static X509_EXTENSION *do_ext_conf();
-static X509V3_EXTENSION *v3_generic_extension();
-#endif
-
-X509_EXTENSION *X509V3_EXT_conf(conf, ctx, name, value)
-LHASH *conf;   /* Config file */
-X509V3_CTX *ctx;
-char *name;    /* Name */
-char *value;   /* Value */
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int crit, int type);
+static char *conf_lhash_get_string(void *db, char *section, char *value);
+static STACK *conf_lhash_get_section(void *db, char *section);
+static X509_EXTENSION *do_ext_i2d(X509V3_EXT_METHOD *method, int ext_nid,
+                                                int crit, void *ext_struc);
+/* LHASH *conf:  Config file    */
+/* char *name:  Name    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_conf(LHASH *conf, X509V3_CTX *ctx, char *name,
+            char *value)
 {
        int crit;
        int ext_type;
@@ -98,11 +94,10 @@ char *value;        /* Value */
        return ret;
 }
 
-X509_EXTENSION *X509V3_EXT_conf_nid(conf, ctx, ext_nid, value)
-LHASH *conf;   /* Config file */
-X509V3_CTX *ctx;
-int ext_nid;
-char *value;   /* Value */
+/* LHASH *conf:  Config file    */
+/* char *value:  Value    */
+X509_EXTENSION *X509V3_EXT_conf_nid(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
+            char *value)
 {
        int crit;
        int ext_type;
@@ -113,20 +108,15 @@ char *value;      /* Value */
        return do_ext_conf(conf, ctx, ext_nid, crit, value);
 }
 
-static X509_EXTENSION *do_ext_conf(conf, ctx, ext_nid, crit, value)
-LHASH *conf;   /* Config file */
-X509V3_CTX *ctx;
-int ext_nid;
-int crit;
-char *value;   /* Value */
+/* LHASH *conf:  Config file    */
+/* char *value:  Value    */
+static X509_EXTENSION *do_ext_conf(LHASH *conf, X509V3_CTX *ctx, int ext_nid,
+            int crit, char *value)
 {
-       X509_EXTENSION *ext = NULL;
        X509V3_EXT_METHOD *method;
+       X509_EXTENSION *ext;
        STACK *nval;
-       char *ext_struc;
-       char *ext_der, *p;
-       int ext_len;
-       ASN1_OCTET_STRING *ext_oct;
+       void *ext_struc;
        if(ext_nid == NID_undef) {
                X509V3err(X509V3_F_DO_EXT_CONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
                return NULL;
@@ -149,59 +139,89 @@ char *value;      /* Value */
                if(!ext_struc) return NULL;
        } else if(method->s2i) {
                if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
+       } else if(method->r2i) {
+               if(!ctx->db) {
+                       X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_NO_CONFIG_DATABASE);
+                       return NULL;
+               }
+               if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
        } else {
                X509V3err(X509V3_F_X509V3_EXT_CONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
                ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
                return NULL;
        }
 
-       /* We've now got the internal representation: convert to DER */
+       ext  = do_ext_i2d(method, ext_nid, crit, ext_struc);
+       method->ext_free(ext_struc);
+       return ext;
+
+}
+
+static X509_EXTENSION *do_ext_i2d(X509V3_EXT_METHOD *method, int ext_nid,
+                                                int crit, void *ext_struc)
+{
+       unsigned char *ext_der, *p;
+       int ext_len;
+       ASN1_OCTET_STRING *ext_oct;
+       X509_EXTENSION *ext;
+       /* Convert internal representation to DER */
        ext_len = method->i2d(ext_struc, NULL);
-       ext_der = Malloc(ext_len);
+       if(!(ext_der = Malloc(ext_len))) goto merr;
        p = ext_der;
        method->i2d(ext_struc, &p);
-       method->ext_free(ext_struc);
-       ext_oct = ASN1_OCTET_STRING_new();
+       if(!(ext_oct = ASN1_OCTET_STRING_new())) goto merr;
        ext_oct->data = ext_der;
        ext_oct->length = ext_len;
        
        ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
+       if(!ext) goto merr;
        ASN1_OCTET_STRING_free(ext_oct);
 
        return ext;
 
+       merr:
+       X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE);
+       return NULL;
+
+}
+
+/* Given an internal structure, nid and critical flag create an extension */
+
+X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
+{
+       X509V3_EXT_METHOD *method;
+       if(!(method = X509V3_EXT_get_nid(ext_nid))) {
+               X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION);
+               return NULL;
+       }
+       return do_ext_i2d(method, ext_nid, crit, ext_struc);
 }
 
 /* Check the extension string for critical flag */
-static int v3_check_critical(value)
-char **value;
+static int v3_check_critical(char **value)
 {
        char *p = *value;
        if((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
        p+=9;
-       while(isspace(*p)) p++;
+       while(isspace((unsigned char)*p)) p++;
        *value = p;
        return 1;
 }
 
 /* Check extension string for generic extension and return the type */
-static int v3_check_generic(value)
-char **value;
+static int v3_check_generic(char **value)
 {
        char *p = *value;
-       if((strlen(p) < 4) || strncmp(p, "RAW:,", 4)) return 0;
+       if((strlen(p) < 4) || strncmp(p, "DER:,", 4)) return 0;
        p+=4;
-       while(isspace(*p)) p++;
+       while(isspace((unsigned char)*p)) p++;
        *value = p;
        return 1;
 }
 
 /* Create a generic extension: for now just handle RAW type */
-static X509_EXTENSION *v3_generic_extension(ext, value, crit, type)
-char *ext;
-char *value;
-int crit;
-int type;
+static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
+            int crit, int type)
 {
 unsigned char *ext_der=NULL;
 long ext_len;
@@ -243,11 +263,8 @@ return extension;
  * section
  */
 
-int X509V3_EXT_add_conf(conf, ctx, section, cert)
-LHASH *conf;
-X509V3_CTX *ctx;
-char *section;
-X509 *cert;
+int X509V3_EXT_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
+            X509 *cert)
 {
        X509_EXTENSION *ext;
        STACK *nval;
@@ -264,11 +281,85 @@ X509 *cert;
        return 1;
 }
 
-/* Just check syntax of config file as far as possible */
-int X509V3_EXT_check_conf(conf, section)
-LHASH *conf;
-char *section;
+/* Same as above but for a CRL */
+
+int X509V3_EXT_CRL_add_conf(LHASH *conf, X509V3_CTX *ctx, char *section,
+            X509_CRL *crl)
+{
+       X509_EXTENSION *ext;
+       STACK *nval;
+       CONF_VALUE *val;        
+       int i;
+       if(!(nval = CONF_get_section(conf, section))) return 0;
+       for(i = 0; i < sk_num(nval); i++) {
+               val = (CONF_VALUE *)sk_value(nval, i);
+               if(!(ext = X509V3_EXT_conf(conf, ctx, val->name, val->value)))
+                                                               return 0;
+               if(crl) X509_CRL_add_ext(crl, ext, -1);
+               X509_EXTENSION_free(ext);
+       }
+       return 1;
+}
+
+/* Config database functions */
+
+char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
+{
+       if(ctx->db_meth->get_string)
+                       return ctx->db_meth->get_string(ctx->db, name, section);
+       return NULL;
+}
+
+STACK * X509V3_get_section(X509V3_CTX *ctx, char *section)
+{
+       if(ctx->db_meth->get_section)
+                       return ctx->db_meth->get_section(ctx->db, section);
+       return NULL;
+}
+
+void X509V3_string_free(X509V3_CTX *ctx, char *str)
+{
+       if(!str) return;
+       if(ctx->db_meth->free_string)
+                       ctx->db_meth->free_string(ctx->db, str);
+}
+
+void X509V3_section_free(X509V3_CTX *ctx, STACK *section)
+{
+       if(!section) return;
+       if(ctx->db_meth->free_section)
+                       ctx->db_meth->free_section(ctx->db, section);
+}
+
+static char *conf_lhash_get_string(void *db, char *section, char *value)
+{
+       return CONF_get_string(db, section, value);
+}
+
+static STACK *conf_lhash_get_section(void *db, char *section)
+{
+       return CONF_get_section(db, section);
+}
+
+static X509V3_CONF_METHOD conf_lhash_method = {
+conf_lhash_get_string,
+conf_lhash_get_section,
+NULL,
+NULL
+};
+
+void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH *lhash)
+{
+       ctx->db_meth = &conf_lhash_method;
+       ctx->db = lhash;
+}
+
+void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
+            X509_CRL *crl, int flags)
 {
-       static X509V3_CTX ctx_tst = { CTX_TEST, NULL, NULL, NULL, NULL };
-       return X509V3_EXT_add_conf(conf, &ctx_tst, section, NULL);
+       ctx->issuer_cert = issuer;
+       ctx->subject_cert = subj;
+       ctx->crl = crl;
+       ctx->subject_req = req;
+       ctx->flags = flags;
 }