diff options
Diffstat (limited to 'mysql/libmariadb/ma_default.c')
| -rw-r--r-- | mysql/libmariadb/ma_default.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/mysql/libmariadb/ma_default.c b/mysql/libmariadb/ma_default.c new file mode 100644 index 0000000..518819d --- /dev/null +++ b/mysql/libmariadb/ma_default.c @@ -0,0 +1,326 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + 2016 MariaDB Corporation AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + MA 02111-1301, USA */ + +#include <ma_global.h> +#include <ma_sys.h> +#include "ma_string.h" +#include <ctype.h> +#include "mariadb_ctype.h" +#include <mysql.h> +#include <ma_common.h> +#include <mariadb/ma_io.h> + +#ifdef _WIN32 +#include <io.h> +#include "Shlwapi.h" + +static const char *ini_exts[]= {"ini", "cnf", 0}; +#define R_OK 4 +#else +#include <unistd.h> +static const char *ini_exts[]= {"cnf", 0}; +#endif + +char **configuration_dirs= NULL; +#define MAX_CONFIG_DIRS 6 + +static int add_cfg_dir(char **cfg_dirs, const char *directory) +{ + int i; + + for (i=0; i < MAX_CONFIG_DIRS && cfg_dirs[i]; i++); + + if (i < MAX_CONFIG_DIRS) { + cfg_dirs[i]= strdup(directory); + return 0; + } + return 1; +} + +void release_configuration_dirs() +{ + if (configuration_dirs) + { + int i= 0; + while (configuration_dirs[i]) + free(configuration_dirs[i++]); + free(configuration_dirs); + } +} + +char **get_default_configuration_dirs() +{ +#ifdef _WIN32 + char dirname[FN_REFLEN]; +#endif + char *env; + + configuration_dirs= (char **)calloc(1, (MAX_CONFIG_DIRS + 1) * sizeof(char *)); + if (!configuration_dirs) + goto end; + +#ifdef _WIN32 + /* On Windows operating systems configuration files are stored in + 1. System directory + 2. Windows directory + 3. C:\ + */ + if (!GetSystemDirectory(dirname, FN_REFLEN) || + add_cfg_dir(configuration_dirs, dirname)) + goto error; + + if (!GetWindowsDirectory(dirname, FN_REFLEN) || + add_cfg_dir(configuration_dirs, dirname)) + goto error; + + if (add_cfg_dir(configuration_dirs, "C:")) + goto error; + + if (GetModuleFileName(NULL, dirname, FN_REFLEN)) + { + PathRemoveFileSpec(dirname); + if (add_cfg_dir(configuration_dirs, dirname)) + goto error; + } +#else + /* on *nix platforms configuration files are stored in + 1. SYSCONFDIR (if build happens inside server package, or + -DDEFAULT_SYSCONFDIR was specified + 2. /etc + 3. /etc/mysql + */ +#ifdef DEFAULT_SYSCONFDIR + if (add_cfg_dir(configuration_dirs, DEFAULT_SYSCONFDIR)) + goto error; +#else + if (add_cfg_dir(configuration_dirs, "/etc")) + goto error; + if (add_cfg_dir(configuration_dirs, "/etc/mysql")) + goto error; +#endif +#endif +/* This differs from https://mariadb.com/kb/en/mariadb/configuring-mariadb-with-mycnf/ where MYSQL_HOME is not specified for Windows */ + if ((env= getenv("MYSQL_HOME")) && + add_cfg_dir(configuration_dirs, env)) + goto error; +end: + return configuration_dirs; +error: + return NULL; +} + +extern my_bool _mariadb_set_conf_option(MYSQL *mysql, const char *config_option, const char *config_value); + +static my_bool is_group(char *ptr, const char **groups) +{ + while (*groups) + { + if (!strcmp(ptr, *groups)) + return 1; + groups++; + } + return 0; +} + +static my_bool _mariadb_read_options_from_file(MYSQL *mysql, + const char *config_file, + const char *group) +{ + uint line=0; + my_bool read_values= 0, found_group= 0, is_escaped= 0, is_quoted= 0; + char buff[4096],*ptr,*end,*value, *key= 0, *optval; + MA_FILE *file= NULL; + my_bool rc= 1; + const char *groups[5]= {"client", + "client-server", + "client-mariadb", + group, + NULL}; + my_bool (*set_option)(MYSQL *mysql, const char *config_option, const char *config_value); + + + /* if a plugin registered a hook we will call this hook, otherwise + * default (_mariadb_set_conf_option) will be called */ + if (mysql->options.extension && mysql->options.extension->set_option) + set_option= mysql->options.extension->set_option; + else + set_option= _mariadb_set_conf_option; + + if (!(file = ma_open(config_file, "r", NULL))) + goto err; + + while (ma_gets(buff,sizeof(buff)-1,file)) + { + line++; + key= 0; + /* Ignore comment and empty lines */ + for (ptr=buff ; isspace(*ptr) ; ptr++ ); + if (!is_escaped && (*ptr == '\"' || *ptr== '\'')) + { + is_quoted= !is_quoted; + continue; + } + if (*ptr == '#' || *ptr == ';' || !*ptr) + continue; + is_escaped= (*ptr == '\\'); + if (*ptr == '[') /* Group name */ + { + found_group=1; + if (!(end=(char *) strchr(++ptr,']'))) + { + /* todo: set error */ + goto err; + } + for ( ; isspace(end[-1]) ; end--) ; /* Remove end space */ + end[0]=0; + read_values= is_group(ptr, groups); + continue; + } + if (!found_group) + { + /* todo: set error */ + goto err; + } + if (!read_values) + continue; + if (!(end=value=strchr(ptr,'='))) + { + end=strchr(ptr, '\0'); /* Option without argument */ + set_option(mysql, ptr, NULL); + } + if (!key) + key= ptr; + for ( ; isspace(end[-1]) ; end--) ; + + if (!value) + { + if (!key) + key= ptr; + } + else + { + /* Remove pre- and end space */ + char *value_end; + *value= 0; + value++; + ptr= value; + for ( ; isspace(*value); value++) ; + optval= value; + value_end=strchr(value, '\0'); + for ( ; isspace(value_end[-1]) ; value_end--) ; + /* remove possible quotes */ + if (*value == '\'' || *value == '\"') + { + value++; + if (value_end[-1] == '\'' || value_end[-1] == '\"') + value_end--; + } + if (value_end < value) /* Empty string */ + value_end=value; + for ( ; value != value_end; value++) + { + if (*value == '\\' && value != value_end-1) + { + switch(*++value) { + case 'n': + *ptr++='\n'; + break; + case 't': + *ptr++= '\t'; + break; + case 'r': + *ptr++ = '\r'; + break; + case 'b': + *ptr++ = '\b'; + break; + case 's': + *ptr++= ' '; /* space */ + break; + case '\"': + *ptr++= '\"'; + break; + case '\'': + *ptr++= '\''; + break; + case '\\': + *ptr++= '\\'; + break; + default: /* Unknown; Keep '\' */ + *ptr++= '\\'; + *ptr++= *value; + break; + } + } + else + *ptr++= *value; + } + *ptr=0; + set_option(mysql, key, optval); + key= optval= 0; + } + } + if (file) + ma_close(file); + rc= 0; + +err: + return rc; +} + + +my_bool _mariadb_read_options(MYSQL *mysql, + const char *config_file, + const char *group) +{ + int i= 0, + exts, + errors= 0; + char filename[FN_REFLEN + 1]; +#ifndef _WIN32 + char *env; +#endif + + if (config_file) + return _mariadb_read_options_from_file(mysql, config_file, group); + + for (i=0; i < MAX_CONFIG_DIRS && configuration_dirs[i]; i++) + { + for (exts= 0; ini_exts[exts]; exts++) + { + snprintf(filename, FN_REFLEN, + "%s%cmy.%s", configuration_dirs[i], FN_LIBCHAR, ini_exts[exts]); + if (!access(filename, R_OK)) + errors+= _mariadb_read_options_from_file(mysql, filename, group); + } + } +#ifndef _WIN32 + /* special case: .my.cnf in Home directory */ + if ((env= getenv("HOME"))) + { + for (exts= 0; ini_exts[exts]; exts++) + { + snprintf(filename, FN_REFLEN, + "%s%c.my.%s", env, FN_LIBCHAR, ini_exts[exts]); + if (!access(filename, R_OK)) + errors+= _mariadb_read_options_from_file(mysql, filename, group); + } + } +#endif + return errors; +} |