-/* $Cambridge: exim/src/src/lookups/mysql.c,v 1.3 2006/02/07 11:19:01 ph10 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2006 */
+/* Copyright (c) University of Cambridge 1995 - 2015 */
/* See the file NOTICE for conditions of use and distribution. */
/* Thanks to Paul Kelly for contributing the original code for these
#include "../exim.h"
#include "lf_functions.h"
-#include "mysql.h" /* The local header */
-
-
-/* We can't just compile this code and allow the library mechanism to omit the
-functions if they are not wanted, because we need to have the MYSQL header
-available for compiling. Therefore, compile these functions only if
-LOOKUP_MYSQL is defined. However, some compilers don't like compiling empty
-modules, so keep them happy with a dummy when skipping the rest. Make it
-reference itself to stop picky compilers complaining that it is unused, and put
-in a dummy argument to stop even pickier compilers complaining about infinite
-loops. */
-
-#ifndef LOOKUP_MYSQL
-static void dummy(int x) { dummy(x-1); }
-#else
-
#include <mysql.h> /* The system header */
/* See local README for interface description. */
-void *
+static void *
mysql_open(uschar *filename, uschar **errmsg)
{
return (void *)(1); /* Just return something non-null */
/* See local README for interface description. */
-void
+static void
mysql_tidy(void)
{
mysql_connection *cn;
resultptr where to store the result
errmsg where to point an error message
defer_break TRUE if no more servers are to be tried after DEFER
- do_cache set false if data is changed
+ do_cache set zero if data is changed
The server string is of the form "host/dbname/user/password". The host can be
host:port. This string is in a nextinlist temporary buffer, so can be
*/
static int
-perform_mysql_search(uschar *query, uschar *server, uschar **resultptr,
- uschar **errmsg, BOOL *defer_break, BOOL *do_cache)
+perform_mysql_search(const uschar *query, uschar *server, uschar **resultptr,
+ uschar **errmsg, BOOL *defer_break, uint *do_cache)
{
MYSQL *mysql_handle = NULL; /* Keep compilers happy */
MYSQL_RES *mysql_result = NULL;
/* See if we have a cached connection to the server */
-for (cn = mysql_connections; cn != NULL; cn = cn->next)
- {
+for (cn = mysql_connections; cn; cn = cn->next)
if (Ustrcmp(cn->server, server_copy) == 0)
{
mysql_handle = cn->handle;
break;
}
- }
/* If no cached connection, we must set one up. Mysql allows for a host name
and port to be specified. It also allows the name of a Unix socket to be used.
Unfortunately, this contains slashes, but its use is expected to be rare, so
the rather cumbersome syntax shouldn't inconvenience too many people. We use
-this: host:port(socket) where all the parts are optional. */
+this: host:port(socket)[group] where all the parts are optional.
+The "group" parameter specifies an option group from a MySQL option file. */
-if (cn == NULL)
+if (!cn)
{
uschar *p;
uschar *socket = NULL;
int port = 0;
+ uschar *group = US"exim";
- if ((p = Ustrchr(sdata[0], '(')) != NULL)
+ if ((p = Ustrchr(sdata[0], '[')))
+ {
+ *p++ = 0;
+ group = p;
+ while (*p && *p != ']') p++;
+ *p = 0;
+ }
+
+ if ((p = Ustrchr(sdata[0], '(')))
{
*p++ = 0;
socket = p;
- while (*p != 0 && *p != ')') p++;
+ while (*p && *p != ')') p++;
*p = 0;
}
- if ((p = Ustrchr(sdata[0], ':')) != NULL)
+ if ((p = Ustrchr(sdata[0], ':')))
{
*p++ = 0;
port = Uatoi(p);
}
- if (Ustrchr(sdata[0], '/') != NULL)
+ if (Ustrchr(sdata[0], '/'))
{
*errmsg = string_sprintf("unexpected slash in MySQL server hostname: %s",
sdata[0]);
mysql_handle = store_get(sizeof(MYSQL));
mysql_init(mysql_handle);
+ mysql_options(mysql_handle, MYSQL_READ_DEFAULT_GROUP, CS group);
if (mysql_real_connect(mysql_handle,
/* host user passwd database */
CS sdata[0], CS sdata[2], CS sdata[3], CS sdata[1],
- port, CS socket, 0) == NULL)
+ port, CS socket, CLIENT_MULTI_RESULTS) == NULL)
{
*errmsg = string_sprintf("MYSQL connection failed: %s",
mysql_error(mysql_handle));
was expected (this is all explained clearly in the MySQL manual). In this case,
we return the number of rows affected by the command. In this event, we do NOT
want to cache the result; also the whole cache for the handle must be cleaned
-up. Setting do_cache FALSE requests this. */
+up. Setting do_cache zero requests this. */
if ((mysql_result = mysql_use_result(mysql_handle)) == NULL)
{
{
DEBUG(D_lookup) debug_printf("MYSQL: query was not one that returns data\n");
result = string_sprintf("%d", mysql_affected_rows(mysql_handle));
- *do_cache = FALSE;
+ *do_cache = 0;
goto MYSQL_EXIT;
}
*errmsg = string_sprintf("MYSQL: lookup result failed: %s\n",
unsigned long *lengths = mysql_fetch_lengths(mysql_result);
if (result != NULL)
- result = string_cat(result, &ssize, &offset, US"\n", 1);
+ result = string_catn(result, &ssize, &offset, US"\n", 1);
if (num_fields == 1)
{
if (mysql_row_data[0] != NULL) /* NULL value yields nothing */
- result = string_cat(result, &ssize, &offset, US mysql_row_data[0],
+ result = string_catn(result, &ssize, &offset, US mysql_row_data[0],
lengths[0]);
}
}
}
+/* more results? -1 = no, >0 = error, 0 = yes (keep looping)
+ This is needed because of the CLIENT_MULTI_RESULTS on mysql_real_connect(),
+ we don't expect any more results. */
+
+while((i = mysql_next_result(mysql_handle)) >= 0) {
+ if(i == 0) { /* Just ignore more results */
+ DEBUG(D_lookup) debug_printf("MYSQL: got unexpected more results\n");
+ continue;
+ }
+
+ *errmsg = string_sprintf("MYSQL: lookup result error when checking for more results: %s\n",
+ mysql_error(mysql_handle));
+ goto MYSQL_EXIT;
+}
+
/* If result is NULL then no data has been found and so we return FAIL.
Otherwise, we must terminate the string which has been built; string_cat()
always leaves enough room for a terminating zero. */
if (mysql_result != NULL) mysql_free_result(mysql_result);
-/* Non-NULL result indicates a sucessful result */
+/* Non-NULL result indicates a successful result */
if (result != NULL)
{
*************************************************/
/* See local README for interface description. The handle and filename
-arguments are not used. Loop through a list of servers while the query is
-deferred with a retryable error. */
+arguments are not used. The code to loop through a list of servers while the
+query is deferred with a retryable error is now in a separate function that is
+shared with other SQL lookups. */
-int
-mysql_find(void *handle, uschar *filename, uschar *query, int length,
- uschar **result, uschar **errmsg, BOOL *do_cache)
+static int
+mysql_find(void *handle, uschar *filename, const uschar *query, int length,
+ uschar **result, uschar **errmsg, uint *do_cache)
{
-int sep = 0;
-uschar *server;
-uschar *list = mysql_servers;
-uschar buffer[512];
-
-DEBUG(D_lookup) debug_printf("MYSQL query: %s\n", query);
-
-while ((server = string_nextinlist(&list, &sep, buffer, sizeof(buffer))) != NULL)
- {
- BOOL defer_break = FALSE;
- int rc = perform_mysql_search(query, server, result, errmsg, &defer_break,
- do_cache);
- if (rc != DEFER || defer_break) return rc;
- }
-
-if (mysql_servers == NULL)
- *errmsg = US"no MYSQL servers defined (mysql_servers option)";
-
-return DEFER;
+return lf_sqlperform(US"MySQL", US"mysql_servers", mysql_servers, query,
+ result, errmsg, do_cache, perform_mysql_search);
}
Returns: the processed string or NULL for a bad option
*/
-uschar *
+static uschar *
mysql_quote(uschar *s, uschar *opt)
{
register int c;
}
-#endif /* MYSQL_LOOKUP */
+/*************************************************
+* Version reporting entry point *
+*************************************************/
+
+/* See local README for interface description. */
+
+#include "../version.h"
+
+void
+mysql_version_report(FILE *f)
+{
+fprintf(f, "Library version: MySQL: Compile: %s [%s]\n"
+ " Runtime: %s\n",
+ MYSQL_SERVER_VERSION, MYSQL_COMPILATION_COMMENT,
+ mysql_get_client_info());
+#ifdef DYNLOOKUP
+fprintf(f, " Exim version %s\n", EXIM_VERSION_STR);
+#endif
+}
+
+/* These are the lookup_info blocks for this driver */
+
+static lookup_info mysql_lookup_info = {
+ US"mysql", /* lookup name */
+ lookup_querystyle, /* query-style lookup */
+ mysql_open, /* open function */
+ NULL, /* no check function */
+ mysql_find, /* find function */
+ NULL, /* no close function */
+ mysql_tidy, /* tidy function */
+ mysql_quote, /* quoting function */
+ mysql_version_report /* version reporting */
+};
+
+#ifdef DYNLOOKUP
+#define mysql_lookup_module_info _lookup_module_info
+#endif
+
+static lookup_info *_lookup_list[] = { &mysql_lookup_info };
+lookup_module_info mysql_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 };
/* End of lookups/mysql.c */
git://git.exim.org / exim.git / blobdiff