- Put functions for generating SQL queries in pdb_sql.c

- Add pgSQL backend (based on patch by Hamish Friedlander)
- Use query generate functions from pdb_mysql and pdb_pgsql
- Only pdb_pgsql.c needs to be changed whenever the fields in SAM_ACCOUNT change
(This used to be commit 65ad2c02fd2bf36d535c279ad290ab81e39f6816)

1 files changed, 496 insertions, 0 deletions

diff --git a/source3/passdb/pdb_sql.c b/source3/passdb/pdb_sql.c
new file mode 100644
index 00000000000..b87004e0193
--- /dev/null
+++ b/source3/passdb/pdb_sql.c
@@ -0,0 +1,496 @@
+/*
+ * Common PDB SQL backend functions
+ * Copyright (C) Jelmer Vernooij 2003-2004
+ * 
+ * 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 2 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, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#define CONFIG_TABLE_DEFAULT				"user"
+#define CONFIG_LOGON_TIME_DEFAULT			"logon_time"
+#define CONFIG_LOGOFF_TIME_DEFAULT			"logoff_time"
+#define CONFIG_KICKOFF_TIME_DEFAULT			"kickoff_time"
+#define CONFIG_PASS_LAST_SET_TIME_DEFAULT		"pass_last_set_time"
+#define CONFIG_PASS_CAN_CHANGE_TIME_DEFAULT		"pass_can_change_time"
+#define CONFIG_PASS_MUST_CHANGE_TIME_DEFAULT 		"pass_must_change_time"
+#define CONFIG_USERNAME_DEFAULT 			"username"
+#define CONFIG_DOMAIN_DEFAULT				"domain"
+#define CONFIG_NT_USERNAME_DEFAULT  			"nt_username"
+#define CONFIG_FULLNAME_DEFAULT				"nt_fullname"
+#define CONFIG_HOME_DIR_DEFAULT				"home_dir"
+#define CONFIG_DIR_DRIVE_DEFAULT			"dir_drive"
+#define CONFIG_LOGON_SCRIPT_DEFAULT			"logon_script"
+#define CONFIG_PROFILE_PATH_DEFAULT			"profile_path"
+#define CONFIG_ACCT_DESC_DEFAULT			"acct_desc"
+#define CONFIG_WORKSTATIONS_DEFAULT			"workstations"
+#define CONFIG_UNKNOWN_STR_DEFAULT			"unknown_str"
+#define CONFIG_MUNGED_DIAL_DEFAULT			"munged_dial"
+#define CONFIG_USER_SID_DEFAULT				"user_sid"
+#define CONFIG_GROUP_SID_DEFAULT			"group_sid"
+#define CONFIG_LM_PW_DEFAULT				"lm_pw"
+#define CONFIG_NT_PW_DEFAULT				"nt_pw"
+#define CONFIG_PLAIN_PW_DEFAULT				"NULL"
+#define CONFIG_ACCT_CTRL_DEFAULT			"acct_ctrl"
+#define CONFIG_UNKNOWN_3_DEFAULT			"unknown_3"
+#define CONFIG_LOGON_DIVS_DEFAULT			"logon_divs"
+#define CONFIG_HOURS_LEN_DEFAULT			"hours_len"
+#define CONFIG_BAD_PASSWORD_COUNT_DEFAULT		"bad_password_count"
+#define CONFIG_LOGON_COUNT_DEFAULT			"logon_count"
+#define CONFIG_UNKNOWN_6_DEFAULT			"unknown_6"
+
+/* Used to construct insert and update queries */
+
+typedef struct pdb_sql_query {
+	char update;
+	TALLOC_CTX *mem_ctx;
+	char *part1;
+	char *part2;
+} pdb_sql_query;
+
+static void pdb_sql_int_field(struct pdb_sql_query *q, const char *name, int value)
+{
+	if (!name || strchr(name, '\''))
+		return;                 /* This field shouldn't be set by us */
+
+	if (q->update) {
+		q->part1 =
+			talloc_asprintf_append(q->mem_ctx, q->part1,
+								   "%s = %d,", name, value);
+	} else {
+		q->part1 =
+			talloc_asprintf_append(q->mem_ctx, q->part1, "%s,", name);
+		q->part2 =
+			talloc_asprintf_append(q->mem_ctx, q->part2, "%d,", value);
+	}
+}
+
+char *sql_escape_string(const char *unesc)
+{
+	char *esc = malloc(strlen(unesc) * 2 + 3);
+	size_t pos_unesc = 0, pos_esc = 0;
+
+	for(pos_unesc = 0; unesc[pos_unesc]; pos_unesc++) {
+		switch(unesc[pos_unesc]) {
+		case '\\':
+		case '\'':
+		case '"':
+			esc[pos_esc] = '\\'; pos_esc++;
+		default:
+			esc[pos_esc] = unesc[pos_unesc]; pos_esc++;
+			break;
+		}
+	}
+
+	esc[pos_esc] = '\0';
+	
+	return esc;
+}
+
+static NTSTATUS pdb_sql_string_field(struct pdb_sql_query *q,
+					   const char *name, const char *value)
+{
+	char *esc_value;
+
+	if (!name || !value || !strcmp(value, "") || strchr(name, '\''))
+		return NT_STATUS_INVALID_PARAMETER;   /* This field shouldn't be set by module */
+
+	esc_value = sql_escape_string(value);
+
+	if (q->update) {
+		q->part1 =
+			talloc_asprintf_append(q->mem_ctx, q->part1,
+								   "%s = '%s',", name, esc_value);
+	} else {
+		q->part1 =
+			talloc_asprintf_append(q->mem_ctx, q->part1, "%s,", name);
+		q->part2 =
+			talloc_asprintf_append(q->mem_ctx, q->part2, "'%s',",
+								   esc_value);
+	}
+
+	SAFE_FREE(esc_value);
+
+	return NT_STATUS_OK;
+}
+
+#define config_value(data,name,default_value) \
+	lp_parm_const_string(GLOBAL_SECTION_SNUM, data, name, default_value)
+
+static const char * config_value_write(const char *location, const char *name, const char *default_value) 
+{
+	char const *v = NULL;
+	char const *swrite = NULL;
+
+	v = lp_parm_const_string(GLOBAL_SECTION_SNUM, location, name, default_value);
+
+	if (!v)
+		return NULL;
+
+	swrite = strrchr(v, ':');
+
+	/* Default to the same field as read field */
+	if (!swrite)
+		return v;
+
+	swrite++;
+
+	/* If the field is 0 chars long, we shouldn't write to it */
+	if (!strlen(swrite) || !strcmp(swrite, "NULL"))
+		return NULL;
+
+	/* Otherwise, use the additionally specified */
+	return swrite;
+}
+
+static const char * config_value_read(const char *location, const char *name, const char *default_value)
+{
+	char *v = NULL;
+	char *swrite;
+
+	v = lp_parm_talloc_string(GLOBAL_SECTION_SNUM, location, name, default_value);
+
+	if (!v)
+		return "NULL";
+
+	swrite = strrchr(v, ':');
+
+	/* If no write is specified, there are no problems */
+	if (!swrite) {
+		if (strlen(v) == 0)
+			return "NULL";
+		return (const char *)v;
+	}
+
+	/* Otherwise, we have to cut the ':write_part' */
+	*swrite = '\0';
+	if (strlen(v) == 0)
+		return "NULL";
+
+	return (const char *)v;
+}
+
+char *sql_account_query_select(const char *data, BOOL update, enum sql_search_field field, const char *value)
+{
+	const char *field_string;
+	char *query;
+
+	switch(field) {
+	case SQL_SEARCH_NONE: 
+		field_string = "'1'"; 
+		value = "1"; 
+		break;
+		
+	case SQL_SEARCH_USER_SID: 
+		field_string = config_value_read(data, "user sid column", 
+										 CONFIG_USER_SID_DEFAULT); 
+		break;
+		
+	case SQL_SEARCH_USER_NAME: 
+		field_string = config_value_read(data, "username column", 
+										 CONFIG_USERNAME_DEFAULT);
+		break;
+	}
+
+	asprintf(&query,
+			 "SELECT %s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s FROM %s WHERE %s = '%s'",
+			 config_value_read(data, "logon time column",
+							   CONFIG_LOGON_TIME_DEFAULT),
+			 config_value_read(data, "logoff time column",
+							   CONFIG_LOGOFF_TIME_DEFAULT),
+			 config_value_read(data, "kickoff time column",
+							   CONFIG_KICKOFF_TIME_DEFAULT),
+			 config_value_read(data, "pass last set time column",
+							   CONFIG_PASS_LAST_SET_TIME_DEFAULT),
+			 config_value_read(data, "pass can change time column",
+							   CONFIG_PASS_CAN_CHANGE_TIME_DEFAULT),
+			 config_value_read(data, "pass must change time column",
+							   CONFIG_PASS_MUST_CHANGE_TIME_DEFAULT),
+			 config_value_read(data, "username column",
+							   CONFIG_USERNAME_DEFAULT),
+			 config_value_read(data, "domain column",
+							   CONFIG_DOMAIN_DEFAULT),
+			 config_value_read(data, "nt username column",
+							   CONFIG_NT_USERNAME_DEFAULT),
+			 config_value_read(data, "fullname column",
+							   CONFIG_FULLNAME_DEFAULT),
+			 config_value_read(data, "home dir column",
+							   CONFIG_HOME_DIR_DEFAULT),
+			 config_value_read(data, "dir drive column",
+							   CONFIG_DIR_DRIVE_DEFAULT),
+			 config_value_read(data, "logon script column",
+							   CONFIG_LOGON_SCRIPT_DEFAULT),
+			 config_value_read(data, "profile path column",
+							   CONFIG_PROFILE_PATH_DEFAULT),
+			 config_value_read(data, "acct desc column",
+							   CONFIG_ACCT_DESC_DEFAULT),
+			 config_value_read(data, "workstations column",
+							   CONFIG_WORKSTATIONS_DEFAULT),
+			 config_value_read(data, "unknown string column",
+							   CONFIG_UNKNOWN_STR_DEFAULT),
+			 config_value_read(data, "munged dial column",
+							   CONFIG_MUNGED_DIAL_DEFAULT),
+			 config_value_read(data, "user sid column",
+							   CONFIG_USER_SID_DEFAULT),
+			 config_value_read(data, "group sid column",
+							   CONFIG_GROUP_SID_DEFAULT),
+			 config_value_read(data, "lanman pass column",
+							   CONFIG_LM_PW_DEFAULT),
+			 config_value_read(data, "nt pass column",
+							   CONFIG_NT_PW_DEFAULT),
+			 config_value_read(data, "plain pass column",
+							   CONFIG_PLAIN_PW_DEFAULT),
+			 config_value_read(data, "acct ctrl column",
+							   CONFIG_ACCT_CTRL_DEFAULT),
+			 config_value_read(data, "unknown 3 column",
+							   CONFIG_UNKNOWN_3_DEFAULT),
+			 config_value_read(data, "logon divs column",
+							   CONFIG_LOGON_DIVS_DEFAULT),
+			 config_value_read(data, "hours len column",
+							   CONFIG_HOURS_LEN_DEFAULT),
+			 config_value_read(data, "bad password count column",
+							   CONFIG_BAD_PASSWORD_COUNT_DEFAULT),
+			 config_value_read(data, "logon count column",
+							   CONFIG_LOGON_COUNT_DEFAULT),
+			 config_value_read(data, "unknown 6 column",
+							   CONFIG_UNKNOWN_6_DEFAULT),
+			 config_value(data, "table", CONFIG_TABLE_DEFAULT), 
+			 field_string, value
+				 );
+	 return query;
+}
+
+char *sql_account_query_delete(const char *data, const char *esc) 
+{
+	char *query;
+	
+	asprintf(&query, "DELETE FROM %s WHERE %s = '%s'",
+			 config_value(data, "table", CONFIG_TABLE_DEFAULT),
+			 config_value_read(data, "username column",
+							   CONFIG_USERNAME_DEFAULT), esc);
+	return query;
+}
+
+char *sql_account_query_update(const char *location, const SAM_ACCOUNT *newpwd, char isupdate)
+{
+	char *ret;
+	pstring temp;
+	pdb_sql_query query;
+	fstring sid_str;
+
+	query.update = isupdate;
+
+	/* I know this is somewhat overkill but only the talloc 
+	 * functions have asprint_append and the 'normal' asprintf 
+	 * is a GNU extension */
+	query.mem_ctx = talloc_init("sql_query_update");
+	query.part2 = talloc_asprintf(query.mem_ctx, "%s", "");
+	if (query.update) {
+		query.part1 =
+			talloc_asprintf(query.mem_ctx, "UPDATE %s SET ",
+							config_value(location, "table",
+										 CONFIG_TABLE_DEFAULT));
+	} else {
+		query.part1 =
+			talloc_asprintf(query.mem_ctx, "INSERT INTO %s (",
+							config_value(location, "table",
+										 CONFIG_TABLE_DEFAULT));
+	}
+
+	pdb_sql_int_field(&query,
+						config_value_write(location, "acct ctrl column",
+										   CONFIG_ACCT_CTRL_DEFAULT),
+						pdb_get_acct_ctrl(newpwd));
+
+	if (pdb_get_init_flags(newpwd, PDB_LOGONTIME) != PDB_DEFAULT) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "logon time column",
+											   CONFIG_LOGON_TIME_DEFAULT),
+							pdb_get_logon_time(newpwd));
+	}
+
+	if (pdb_get_init_flags(newpwd, PDB_LOGOFFTIME) != PDB_DEFAULT) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "logoff time column",
+											   CONFIG_LOGOFF_TIME_DEFAULT),
+							pdb_get_logoff_time(newpwd));
+	}
+
+	if (pdb_get_init_flags(newpwd, PDB_KICKOFFTIME) != PDB_DEFAULT) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "kickoff time column",
+											   CONFIG_KICKOFF_TIME_DEFAULT),
+							pdb_get_kickoff_time(newpwd));
+	}
+
+	if (pdb_get_init_flags(newpwd, PDB_CANCHANGETIME) != PDB_DEFAULT) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "pass can change time column",
+											   CONFIG_PASS_CAN_CHANGE_TIME_DEFAULT),
+							pdb_get_pass_can_change_time(newpwd));
+	}
+
+	if (pdb_get_init_flags(newpwd, PDB_MUSTCHANGETIME) != PDB_DEFAULT) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "pass must change time column",
+											   CONFIG_PASS_MUST_CHANGE_TIME_DEFAULT),
+							pdb_get_pass_must_change_time(newpwd));
+	}
+
+	if (pdb_get_pass_last_set_time(newpwd)) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "pass last set time column",
+											   CONFIG_PASS_LAST_SET_TIME_DEFAULT),
+							pdb_get_pass_last_set_time(newpwd));
+	}
+
+	if (pdb_get_hours_len(newpwd)) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "hours len column",
+											   CONFIG_HOURS_LEN_DEFAULT),
+							pdb_get_hours_len(newpwd));
+	}
+
+	if (pdb_get_logon_divs(newpwd)) {
+		pdb_sql_int_field(&query,
+							config_value_write(location,
+											   "logon divs column",
+											   CONFIG_LOGON_DIVS_DEFAULT),
+							pdb_get_logon_divs(newpwd));
+	}
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "user sid column",
+											  CONFIG_USER_SID_DEFAULT),
+						   sid_to_string(sid_str, 
+										 pdb_get_user_sid(newpwd)));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "group sid column",
+											  CONFIG_GROUP_SID_DEFAULT),
+						   sid_to_string(sid_str,
+										 pdb_get_group_sid(newpwd)));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "username column",
+											  CONFIG_USERNAME_DEFAULT),
+						   pdb_get_username(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "domain column",
+											  CONFIG_DOMAIN_DEFAULT),
+						   pdb_get_domain(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "nt username column",
+											  CONFIG_NT_USERNAME_DEFAULT),
+						   pdb_get_nt_username(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "fullname column",
+											  CONFIG_FULLNAME_DEFAULT),
+						   pdb_get_fullname(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "logon script column",
+											  CONFIG_LOGON_SCRIPT_DEFAULT),
+						   pdb_get_logon_script(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "profile path column",
+											  CONFIG_PROFILE_PATH_DEFAULT),
+						   pdb_get_profile_path(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "dir drive column",
+											  CONFIG_DIR_DRIVE_DEFAULT),
+						   pdb_get_dir_drive(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "home dir column",
+											  CONFIG_HOME_DIR_DEFAULT),
+						   pdb_get_homedir(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "workstations column",
+											  CONFIG_WORKSTATIONS_DEFAULT),
+						   pdb_get_workstations(newpwd));
+
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "unknown string column",
+											  CONFIG_UNKNOWN_STR_DEFAULT),
+						   pdb_get_workstations(newpwd));
+
+	pdb_sethexpwd(temp, pdb_get_lanman_passwd(newpwd),
+				  pdb_get_acct_ctrl(newpwd));
+	pdb_sql_string_field(&query,
+						   config_value_write(location,
+											  "lanman pass column",
+											  CONFIG_LM_PW_DEFAULT), temp);
+
+	pdb_sethexpwd(temp, pdb_get_nt_passwd(newpwd),
+				  pdb_get_acct_ctrl(newpwd));
+	pdb_sql_string_field(&query,
+						   config_value_write(location, "nt pass column",
+											  CONFIG_NT_PW_DEFAULT), temp);
+
+	if (query.update) {
+		query.part1[strlen(query.part1) - 1] = '\0';
+		query.part1 =
+			talloc_asprintf_append(query.mem_ctx, query.part1,
+								   " WHERE %s = '%s'",
+								   config_value_read(location,
+													 "user sid column",
+													 CONFIG_USER_SID_DEFAULT),
+								   sid_to_string(sid_str, pdb_get_user_sid (newpwd)));
+	} else {
+		query.part2[strlen(query.part2) - 1] = ')';
+		query.part1[strlen(query.part1) - 1] = ')';
+		query.part1 =
+			talloc_asprintf_append(query.mem_ctx, query.part1,
+								   " VALUES (%s", query.part2);
+	}
+
+	ret = strdup(query.part1);
+	talloc_destroy(query.mem_ctx);
+	return ret;
+}
+
+BOOL sql_account_config_valid(const char *data)
+{
+	const char *sid_column, *username_column;
+	
+    sid_column = config_value_read(data, "user sid column", CONFIG_USER_SID_DEFAULT);
+    username_column = config_value_read(data, "username column", CONFIG_USERNAME_DEFAULT);
+	
+    if(!strcmp(sid_column,"NULL") || !strcmp(username_column, "NULL")) {
+        DEBUG(0,("Please specify both a valid 'user sid column' and a valid 'username column' in smb.conf\n"));
+        return False;
+    }
+
+	return True;
+}