add first user class and persistence experiments. refs #36

@@ -65,5 +65,7 @@ AC_CONFIG_FILES([Makefile
 		 src/stream/Makefile
 		 src/tree/Makefile
 		 src/application/Makefile
+		 src/storage/Makefile
+		 src/user/Makefile
 		 tests/Makefile])
 AC_OUTPUT

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __STORAGE_H__
+#define __STORAGE_H__
+
+#include <gdbm.h>
+#include <sys/types.h>
+
+#include "class.h"
+
+
+CLASS(Storage) {
+	GDBM_FILE   gdbm;
+	char      * db_name;
+};
+
+void storagePut(Storage, char *, size_t, char *, size_t);
+void storageGet(Storage, char *, size_t, char **, size_t *);
+
+#endif // __STORAGE_H__
+
+// vim: set ts=4 sw=4:
+

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __USER_H__
+#define __USER_H__
+
+#include <sys/types.h>
+
+#include "class.h"
+#include "storage.h"
+
+
+CLASS(User) {
+	char * email;
+	char * firstname;
+	char * surname;
+
+	size_t * nemail;
+	size_t * nfirstname;
+	size_t * nsurname;
+};
+
+User userLoad(User, Storage);
+void userSave(User, Storage);
+
+// void userSerialize(User, void **, size_t *);
+// void userDeserialize(User, void *, size_t);
+
+#endif // __USER_H__
+
+// vim: set ts=4 sw=4:
+

@@ -12,6 +12,8 @@ UTILS = utils/hash.c \
 	utils/mime_type.c
 
 LIBS = ./application/libapplication.a \
+       ./user/libuser.a \
+       ./storage/libstorage.a \
        ./http/libhttp.a \
        ./auth/libauth.a \
        ./cbuf/libcbuf.a \
@@ -32,8 +34,9 @@ bin_PROGRAMS = taskrambler
 
 taskrambler_SOURCES = taskrambler.c $(IFACE) $(UTILS)
 taskrambler_CFLAGS  = $(CFLAGS) -Wall -DPWD=\"$(PWD)\" -I ../include/# $(COVERAGE_CFLAGS)
-taskrambler_LDADD   = $(LIBS) -lrt -lssl -lldap
+taskrambler_LDADD   = $(LIBS) -lrt -lssl -lldap -lgdbm
 #taskrambler_LDFLAGS = $(COVERAGE_LDFLAGS)
 
 SUBDIRS = asset auth cbuf class hash queue http \
-	  logger server session socket stream tree application
+	  logger server session socket stream tree application \
+	  storage user

+ACLOCAL_AMFLAGS = -I m4
+AUTOMAKE_OPTIONS = subdir-objects
+
+noinst_LIBRARIES = libstorage.a
+
+libstorage_a_SOURCES = storage.c get.c put.c
+libstorage_a_CFLAGS  = $(CFLAGS) -Wall -I ../../include/

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gdbm.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+void
+storageGet(
+		Storage this,
+		char * _key, size_t nkey,
+		char ** data, size_t * ndata)
+{
+	datum key   = {_key, nkey};
+	datum value;
+
+	value = gdbm_fetch(this->gdbm, key);
+
+	if (NULL != value.dptr) {
+		*ndata = value.dsize;
+		*data  = memMalloc(value.dsize);
+		memcpy(*data, value.dptr, value.dsize);
+
+		free(value.dptr);
+	}
+}
+
+// vim: set ts=4 sw=4:

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gdbm.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+void
+storagePut(Storage this, char * _key, size_t nkey, char * data, size_t ndata)
+{
+	datum key   = {_key, nkey};
+	datum value = {data, ndata};
+
+	gdbm_store(this->gdbm, key, value, GDBM_REPLACE);
+}
+
+// vim: set ts=4 sw=4:

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gdbm.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+static
+int
+storageCtor(void * _this, va_list * params)
+{
+	Storage   this    = _this;
+	char    * db_name = va_arg(* params, void *);
+
+	this->db_name = memMalloc(strlen(db_name) + 1);
+	strcpy(this->db_name, db_name);
+
+	this->gdbm = gdbm_open(
+			this->db_name,
+			0,
+			GDBM_WRCREAT,
+			S_IRUSR | S_IWUSR,
+			NULL);
+
+	if (NULL == this->gdbm) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static
+void
+storageDtor(void * _this)
+{
+	Storage this = _this;
+
+	if (NULL != this->db_name) MEM_FREE(this->db_name);
+	if (NULL != this->gdbm)    gdbm_close(this->gdbm);
+}
+
+INIT_IFACE(Class, storageCtor, storageDtor, NULL);
+CREATE_CLASS(Storage, NULL, IFACE(Class));
+
+// vim: set ts=4 sw=4:

+ACLOCAL_AMFLAGS = -I m4
+AUTOMAKE_OPTIONS = subdir-objects
+
+noinst_LIBRARIES = libuser.a
+
+libuser_a_SOURCES = user.c load.c save.c
+libuser_a_CFLAGS  = $(CFLAGS) -Wall -I ../../include/

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+#include "user.h"
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+
+User
+userLoad(User this, Storage storage)
+{
+	char   * storage_data;
+	size_t   nstorage_data;
+
+	size_t * user_data_sizes;
+
+	storageGet(
+			storage,
+			this->email, *this->nemail,
+			&storage_data, &nstorage_data);
+
+	if (NULL == storage_data) {
+		return NULL;
+	}
+
+	user_data_sizes =
+		(size_t *)(storage_data + nstorage_data - 3 * sizeof(size_t));
+
+	this->nemail     = user_data_sizes;
+	this->nfirstname = user_data_sizes + 1;
+	this->nsurname   = user_data_sizes + 2;
+
+	this->email     = storage_data;
+	this->firstname = this->email + *this->nemail + 1;
+	this->surname   = this->firstname + *this->nfirstname + 1;
+	
+	return this;
+}
+
+// vim: set ts=4 sw=4:

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <string.h>
+
+#include "user.h"
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+
+void
+userSave(User this, Storage storage)
+{
+	size_t storage_size =
+		*this->nemail + 1 +
+		*this->nfirstname + 1 +
+		*this->nsurname + 1 +
+		3 * sizeof(size_t);
+
+	storagePut(
+			storage,
+			this->email, *this->nemail,
+			this->email, storage_size);
+}
+
+// vim: set ts=4 sw=4:

+/**
+ * \file
+ *
+ * \author	Georg Hopp
+ *
+ * \copyright
+ * Copyright © 2012  Georg Hopp
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "user.h"
+#include "storage.h"
+#include "class.h"
+
+#include "utils/memory.h"
+
+
+static
+int
+userCtor(void * _this, va_list * params)
+{
+	User this = _this;
+
+	char   * email      = va_arg(* params, char *);
+
+	if (NULL != email) {
+		size_t   nemail     = va_arg(* params, size_t);
+		char   * firstname  = va_arg(* params, char *);
+		size_t   nfirstname = va_arg(* params, size_t);
+		char   * surname    = va_arg(* params, char *);
+		size_t   nsurname   = va_arg(* params, size_t);
+
+		size_t storage_size = 
+			nemail + 1 +
+			nfirstname + 1 +
+			nsurname + 1 +
+			3 * sizeof(size_t);
+
+		this->email = memMalloc(storage_size);
+		memcpy(this->email, email, nemail);
+		this->email[nemail] = '\0';
+
+		this->firstname = this->email + nemail + 1;
+		memcpy(this->firstname, firstname, nfirstname);
+		this->firstname[nfirstname] = '\0';
+
+		this->surname = this->firstname + nfirstname + 1;
+		memcpy(this->surname, surname, nsurname);
+		this->surname[nsurname] = '\0';
+
+		this->nemail  = (size_t *)(this->surname + nsurname + 1);
+		*this->nemail = nemail;
+
+		this->nfirstname  = this->nemail + 1;
+		*this->nfirstname = nfirstname;
+
+		this->nsurname  = this->nfirstname + 1;
+		*this->nsurname = nsurname;
+	}
+
+	return 0;
+}
+
+static
+void
+userDtor(void * _this)
+{
+	User this = _this;
+
+	if (NULL != this->email) {
+		MEM_FREE(this->email);
+	}
+}
+
+INIT_IFACE(Class, userCtor, userDtor, NULL);
+CREATE_CLASS(User, NULL, IFACE(Class));
+
+// vim: set ts=4 sw=4:

+#include <stdio.h>
+#include <stdlib.h>
+#include <gdbm.h>
+#include <errno.h>
+#include <string.h>
+
+#include "class.h"
+#include "commons.h"
+#include "user.h"
+#include "storage.h"
+
+#include "utils/memory.h"
+
+int
+main(int argc, char * argv[])
+{
+    Storage users = new(Storage, CSTRA("./users.db"));
+    User    user;
+    User    georg;
+    //User    steffi;
+    size_t  nuser;
+
+    if (NULL == users) {
+        fprintf(stderr, "%s\n", gdbm_strerror(gdbm_errno));
+        fprintf(stderr, "%s\n", strerror(errno));
+        return 1;
+    }
+
+    georg = new(User,
+            CSTRA("georg@steffers.org"),
+            CSTRA("Georg"),
+            CSTRA("Hopp"));
+
+    userSave(georg, users);
+    delete(georg);
+
+    user = new(User, NULL);
+    user->email  = "georg@steffers.org";
+    nuser        = sizeof("georg@steffers.org") - 1;
+    user->nemail = &nuser;
+
+    if (NULL == userLoad(user, users)) {
+        fprintf(stderr, "can't find user");
+    } else {
+        puts("found user:");
+        puts(user->email);
+        puts(user->firstname);
+        puts(user->surname);
+    }
+
+    delete(user);
+    delete(users);
+
+    memCleanup();
+
+    return 0;
+}
+
+// vim: set et ts=4 sw=4: