* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2015 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
/* Thanks to Paul Kelly for contributing the original code for these
#include <mysql.h> /* The system header */
+/* We define symbols for *_VERSION_ID (numeric), *_VERSION_STR (char*)
+and *_BASE_STR (char*). It's a bit of guesswork. Especially for mariadb
+with versions before 10.2, as they do not define there there specific symbols.
+*/
+
+/* Newer (>= 10.2) MariaDB */
+#if defined MARIADB_VERSION_ID
+#define EXIM_MxSQL_VERSION_ID MARIADB_VERSION_ID
+
+/* MySQL defines MYSQL_VERSION_ID, and MariaDB does so */
+/* https://dev.mysql.com/doc/refman/5.7/en/c-api-server-client-versions.html */
+#elif defined LIBMYSQL_VERSION_ID
+#define EXIM_MxSQL_VERSION_ID LIBMYSQL_VERSION_ID
+#elif defined MYSQL_VERSION_ID
+#define EXIM_MxSQL_VERSION_ID MYSQL_VERSION_ID
+
+#else
+#define EXIM_MYSQL_VERSION_ID 0
+#endif
+
+/* Newer (>= 10.2) MariaDB */
+#ifdef MARIADB_CLIENT_VERSION_STR
+#define EXIM_MxSQL_VERSION_STR MARIADB_CLIENT_VERSION_STR
+
+/* Mysql uses MYSQL_SERVER_VERSION */
+#elif defined LIBMYSQL_VERSION
+#define EXIM_MxSQL_VERSION_STR LIBMYSQL_VERSION
+#elif defined MYSQL_SERVER_VERSION
+#define EXIM_MxSQL_VERSION_STR MYSQL_SERVER_VERSION
+
+#else
+#define EXIM_MxSQL_VERSION_STR "unknown"
+#endif
+
+#if defined MARIADB_BASE_VERSION
+#define EXIM_MxSQL_BASE_STR MARIADB_BASE_VERSION
+
+#elif defined MARIADB_PACKAGE_VERSION
+#define EXIM_MxSQL_BASE_STR "mariadb"
+
+#elif defined MYSQL_BASE_VERSION
+#define EXIM_MxSQL_BASE_STR MYSQL_BASE_VERSION
+
+#else
+#define EXIM_MxSQL_BASE_STR "n.A."
+#endif
+
/* Structure and anchor for caching connections. */
/* See local README for interface description. */
static void *
-mysql_open(uschar *filename, uschar **errmsg)
+mysql_open(const uschar * filename, uschar ** errmsg)
{
return (void *)(1); /* Just return something non-null */
}
while ((cn = mysql_connections) != NULL)
{
mysql_connections = cn->next;
- DEBUG(D_lookup) debug_printf("close MYSQL connection: %s\n", cn->server);
+ DEBUG(D_lookup) debug_printf_indent("close MYSQL connection: %s\n", cn->server);
mysql_close(cn->handle);
}
}
errmsg where to point an error message
defer_break TRUE if no more servers are to be tried after DEFER
do_cache set zero if data is changed
+ opts options
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(const uschar *query, uschar *server, uschar **resultptr,
- uschar **errmsg, BOOL *defer_break, uint *do_cache)
+ uschar **errmsg, BOOL *defer_break, uint *do_cache, const uschar * opts)
{
MYSQL *mysql_handle = NULL; /* Keep compilers happy */
MYSQL_RES *mysql_result = NULL;
MYSQL_FIELD *fields;
int i;
-int ssize = 0;
-int offset = 0;
int yield = DEFER;
unsigned int num_fields;
-uschar *result = NULL;
+gstring * result = NULL;
mysql_connection *cn;
uschar *server_copy = NULL;
uschar *sdata[4];
nextinlist temporary buffer. The copy of the string that is used for caching
has the password removed. This copy is also used for debugging output. */
-for (i = 3; i > 0; i--)
+for (int i = 3; i > 0; i--)
{
uschar *pp = Ustrrchr(server, '/');
- if (pp == NULL)
+ if (!pp)
{
*errmsg = string_sprintf("incomplete MySQL server data: %s",
(i == 3)? server : server_copy);
for (cn = mysql_connections; cn; cn = cn->next)
if (Ustrcmp(cn->server, server_copy) == 0)
- {
- mysql_handle = cn->handle;
- break;
- }
+ { 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.
if (sdata[1][0] == 0) sdata[1] = NULL;
DEBUG(D_lookup)
- debug_printf("MYSQL new connection: host=%s port=%d socket=%s "
+ debug_printf_indent("MYSQL new connection: host=%s port=%d socket=%s "
"database=%s user=%s\n", sdata[0], port, socket, sdata[1], sdata[2]);
/* Get store for a new handle, initialize it, and connect to the server */
- mysql_handle = store_get(sizeof(MYSQL));
+ mysql_handle = store_get(sizeof(MYSQL), FALSE);
mysql_init(mysql_handle);
mysql_options(mysql_handle, MYSQL_READ_DEFAULT_GROUP, CS group);
if (mysql_real_connect(mysql_handle,
/* Add the connection to the cache */
- cn = store_get(sizeof(mysql_connection));
+ cn = store_get(sizeof(mysql_connection), FALSE);
cn->server = server_copy;
cn->handle = mysql_handle;
cn->next = mysql_connections;
else
{
DEBUG(D_lookup)
- debug_printf("MYSQL using cached connection for %s\n", server_copy);
+ debug_printf_indent("MYSQL using cached connection for %s\n", server_copy);
}
/* Run the query */
want to cache the result; also the whole cache for the handle must be cleaned
up. Setting do_cache zero requests this. */
-if ((mysql_result = mysql_use_result(mysql_handle)) == NULL)
+if (!(mysql_result = mysql_use_result(mysql_handle)))
{
- if ( mysql_field_count(mysql_handle) == 0 )
+ if (mysql_field_count(mysql_handle) == 0)
{
- DEBUG(D_lookup) debug_printf("MYSQL: query was not one that returns data\n");
- result = string_sprintf("%d", mysql_affected_rows(mysql_handle));
+ DEBUG(D_lookup) debug_printf_indent("MYSQL: query was not one that returns data\n");
+ result = string_cat(result,
+ string_sprintf("%d", mysql_affected_rows(mysql_handle)));
*do_cache = 0;
goto MYSQL_EXIT;
}
fields = mysql_fetch_fields(mysql_result);
-while ((mysql_row_data = mysql_fetch_row(mysql_result)) != NULL)
+while ((mysql_row_data = mysql_fetch_row(mysql_result)))
{
unsigned long *lengths = mysql_fetch_lengths(mysql_result);
- if (result != NULL)
- result = string_catn(result, &ssize, &offset, US"\n", 1);
+ if (result)
+ result = string_catn(result, US"\n", 1);
- if (num_fields == 1)
- {
- if (mysql_row_data[0] != NULL) /* NULL value yields nothing */
- result = string_catn(result, &ssize, &offset, US mysql_row_data[0],
- lengths[0]);
- }
+ if (num_fields != 1)
+ for (int i = 0; i < num_fields; i++)
+ result = lf_quote(US fields[i].name, US mysql_row_data[i], lengths[i],
+ result);
- else for (i = 0; i < num_fields; i++)
- {
- result = lf_quote(US fields[i].name, US mysql_row_data[i], lengths[i],
- result, &ssize, &offset);
- }
+ else if (mysql_row_data[0] != NULL) /* NULL value yields nothing */
+ result = string_catn(result, 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;
-}
+while((i = mysql_next_result(mysql_handle)) >= 0)
+ if(i != 0)
+ {
+ *errmsg = string_sprintf(
+ "MYSQL: lookup result error when checking for more results: %s\n",
+ mysql_error(mysql_handle));
+ goto MYSQL_EXIT;
+ }
+ else /* just ignore more results */
+ DEBUG(D_lookup) debug_printf_indent("MYSQL: got unexpected more results\n");
/* 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 (result == NULL)
+if (!result)
{
yield = FAIL;
*errmsg = US"MYSQL: no data found";
}
-else
- {
- result[offset] = 0;
- store_reset(result + offset + 1);
- }
/* Get here by goto from various error checks and from the case where no data
was read (e.g. an update query). */
/* Free mysal store for any result that was got; don't close the connection, as
it is cached. */
-if (mysql_result != NULL) mysql_free_result(mysql_result);
+if (mysql_result) mysql_free_result(mysql_result);
-/* Non-NULL result indicates a sucessful result */
+/* Non-NULL result indicates a successful result */
-if (result != NULL)
+if (result)
{
- *resultptr = result;
+ *resultptr = string_from_gstring(result);
+ gstring_release_unused(result);
return OK;
}
else
{
- DEBUG(D_lookup) debug_printf("%s\n", *errmsg);
+ DEBUG(D_lookup) debug_printf_indent("%s\n", *errmsg);
return yield; /* FAIL or DEFER */
}
}
shared with other SQL lookups. */
static int
-mysql_find(void *handle, uschar *filename, const uschar *query, int length,
- uschar **result, uschar **errmsg, uint *do_cache)
+mysql_find(void * handle, const uschar * filename, const uschar * query,
+ int length, uschar ** result, uschar ** errmsg, uint * do_cache,
+ const uschar * opts)
{
return lf_sqlperform(US"MySQL", US"mysql_servers", mysql_servers, query,
- result, errmsg, do_cache, perform_mysql_search);
+ result, errmsg, do_cache, opts, perform_mysql_search);
}
if (Ustrchr("\n\t\r\b\'\"\\", c) != NULL) count++;
if (count == 0) return s;
-t = quoted = store_get(Ustrlen(s) + count + 1);
+t = quoted = store_get(Ustrlen(s) + count + 1, is_tainted(s));
while ((c = *s++) != 0)
{
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());
+fprintf(f, "Library version: MySQL: Compile: %lu %s [%s]\n"
+ " Runtime: %lu %s\n",
+ (long)EXIM_MxSQL_VERSION_ID, EXIM_MxSQL_VERSION_STR, EXIM_MxSQL_BASE_STR,
+ mysql_get_client_version(), 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 */
+ .name = US"mysql", /* lookup name */
+ .type = lookup_querystyle, /* query-style lookup */
+ .open = mysql_open, /* open function */
+ .check = NULL, /* no check function */
+ .find = mysql_find, /* find function */
+ .close = NULL, /* no close function */
+ .tidy = mysql_tidy, /* tidy function */
+ .quote = mysql_quote, /* quoting function */
+ .version_report = mysql_version_report /* version reporting */
};
#ifdef DYNLOOKUP
git://git.exim.org / exim.git / blobdiff