root/win32/registry.c

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DEFINITIONS

This source file includes following definitions.
  1. OpenPhpRegistryKey
  2. LoadDirectory
  3. delete_internal_hashtable
  4. UpdateIniFromRegistry
  5. GetIniPathFromRegistry

#include "php.h"
#include "php_ini.h"
#include "php_win32_globals.h"

#define PHP_REGISTRY_KEY              "SOFTWARE\\PHP"

#define PHP_VER1(V1)                  #V1
#define PHP_VER2(V1,V2)               #V1"."#V2
#define PHP_VER3(V1,V2,V3)            #V1"."#V2"."#V3

#define PHP_REGISTRY_KEYV(VER)        PHP_REGISTRY_KEY"\\"VER
#define PHP_REGISTRY_KEY1(V1)         PHP_REGISTRY_KEY"\\"PHP_VER1(V1)
#define PHP_REGISTRY_KEY2(V1,V2)      PHP_REGISTRY_KEY"\\"PHP_VER2(V1,V2)
#define PHP_REGISTRY_KEY3(V1,V2,V3)   PHP_REGISTRY_KEY"\\"PHP_VER3(V1,V2,V3)

static const char* registry_keys[] = {
        PHP_REGISTRY_KEYV(PHP_VERSION),
        PHP_REGISTRY_KEY3(PHP_MAJOR_VERSION, PHP_MINOR_VERSION, PHP_RELEASE_VERSION),
        PHP_REGISTRY_KEY2(PHP_MAJOR_VERSION, PHP_MINOR_VERSION),
        PHP_REGISTRY_KEY1(PHP_MAJOR_VERSION),
        PHP_REGISTRY_KEY,
        NULL
};

static int OpenPhpRegistryKey(char* sub_key, HKEY *hKey)
{
        const char **key_name = registry_keys;

        if (sub_key) {
                int main_key_len;
                int sub_key_len = strlen(sub_key);
                char *reg_key;

                while (*key_name) {
                        LONG ret;

                        main_key_len = strlen(*key_name);
                        reg_key = emalloc(main_key_len + sub_key_len + 1);
                        memcpy(reg_key, *key_name, main_key_len);
                        memcpy(reg_key + main_key_len, sub_key, sub_key_len + 1);                       
                        ret = RegOpenKeyEx(HKEY_LOCAL_MACHINE, reg_key, 0, KEY_READ, hKey);
                        efree(reg_key);
                        
                        if (ret == ERROR_SUCCESS) {
                                return 1;
                        }
                        ++key_name;
                }
        } else {
                while (*key_name) {
                        if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, *key_name, 0, KEY_READ, hKey) == ERROR_SUCCESS) {
                                return 1;
                        }
                        ++key_name;
                }
        }
        return 0;
}

static int LoadDirectory(HashTable *directories, HKEY key, char *path, int path_len, HashTable *parent_ht)
{
        DWORD keys, values, max_key, max_name, max_value;
        int ret = 0;
        HashTable *ht = NULL;

        if (RegQueryInfoKey(key, NULL, NULL, NULL, &keys, &max_key, NULL, &values, &max_name, &max_value, NULL, NULL) == ERROR_SUCCESS) {
                
                if (values) {
                        DWORD i;
                        char *name = (char*)emalloc(max_name+1);
                        char *value = (char*)emalloc(max_value+1);
                        DWORD name_len, type, value_len;
                        zval *data;

                        for (i = 0; i < values; i++) {
                                name_len = max_name+1;
                                value_len = max_value+1;
                                if (RegEnumValue(key, i, name, &name_len, NULL, &type, value, &value_len) == ERROR_SUCCESS) {
                                        if ((type == REG_SZ) || (type == REG_EXPAND_SZ)) {
                                                if (!ht) {
                                                        ht = (HashTable*)malloc(sizeof(HashTable));
                                                        if (!ht) {
                                                                return ret;
                                                        }
                                                        zend_hash_init(ht, 0, NULL, ZVAL_INTERNAL_PTR_DTOR, 1);
                                                }
                                                data = (zval*)malloc(sizeof(zval));
                                                if (!data) {
                                                        return ret;
                                                }
                                                INIT_PZVAL(data);
                                                Z_STRVAL_P(data) = zend_strndup(value, value_len-1);
                                                Z_STRLEN_P(data) = value_len-1;
                                                Z_TYPE_P(data) = IS_STRING;
                                                zend_hash_update(ht, name, name_len+1, &data, sizeof(zval*), NULL);
                                        }
                                }
                        }
                        if (ht) {
                                if (parent_ht) {
                                        HashPosition pos;
                                        char *index;
                                        uint index_len;
                                        ulong num;
                                        zval **tmpdata;

                                        for (zend_hash_internal_pointer_reset_ex(parent_ht, &pos);
                                             zend_hash_get_current_data_ex(parent_ht, (void**)&tmpdata, &pos) == SUCCESS &&
                                             zend_hash_get_current_key_ex(parent_ht, &index, &index_len, &num, 0, &pos) == HASH_KEY_IS_STRING;
                                             zend_hash_move_forward_ex(parent_ht, &pos)) {
                                                if (zend_hash_add(ht, index, index_len, tmpdata, sizeof(zval*), NULL) == SUCCESS) {
                                                    Z_ADDREF_PP(tmpdata);
                                                }
                                        }
                                }
                                zend_hash_update(directories, path, path_len+1, &ht, sizeof(HashTable*), NULL);
                                ret = 1;
                        }

                        efree(name);
                        efree(value);
                }

                if (ht == NULL) {
                        ht = parent_ht;
                }

                if (keys) {
                        DWORD i;
                        char *name = (char*)emalloc(max_key+1);
                        char *new_path = (char*)emalloc(path_len+max_key+2);
                        DWORD name_len;
                        FILETIME t;
                        HKEY subkey;

                        for (i = 0; i < keys; i++) {
                                name_len = max_key+1;
                                if (RegEnumKeyEx(key, i, name, &name_len, NULL, NULL, NULL, &t) == ERROR_SUCCESS) {
                                        if (RegOpenKeyEx(key, name, 0, KEY_READ, &subkey) == ERROR_SUCCESS) {
                                                if (path_len) {
                                                        memcpy(new_path, path, path_len);
                                                        new_path[path_len] = '/';
                                                        memcpy(new_path+path_len+1, name, name_len+1);
                                                        zend_str_tolower(new_path, path_len+name_len+1);
                                                        name_len += path_len+1;
                                                } else {
                                                        memcpy(new_path, name, name_len+1);
                                                        zend_str_tolower(new_path, name_len);
                                                }
                                                if (LoadDirectory(directories, subkey, new_path, name_len, ht)) {
                                                        ret = 1;
                                                }
                                                RegCloseKey(subkey);
                                        }
                                }
                        }
                        efree(new_path);
                        efree(name);
                }
        }
        return ret;
}

static void delete_internal_hashtable(void *data)
{
        zend_hash_destroy(*(HashTable**)data);
        free(*(HashTable**)data);
}

#define RegNotifyFlags (REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_ATTRIBUTES | REG_NOTIFY_CHANGE_LAST_SET)

void UpdateIniFromRegistry(char *path TSRMLS_DC)
{
        char *p, *orig_path;
        int path_len;
        HashTable **pht;

        if(!path) {
                return;
        }

        if (!PW32G(registry_directories)) {
                PW32G(registry_directories) = (HashTable*)malloc(sizeof(HashTable));
                if (!PW32G(registry_directories)) {
                        return;
                }
                zend_hash_init(PW32G(registry_directories), 0, NULL, delete_internal_hashtable, 1);
                if (!OpenPhpRegistryKey("\\Per Directory Values", &PW32G(registry_key))) {
                        PW32G(registry_key) = NULL;
                        return;
                }
                PW32G(registry_event) = CreateEvent(NULL, TRUE, FALSE, NULL);
                if (PW32G(registry_event)) {
                        RegNotifyChangeKeyValue(PW32G(registry_key), TRUE, RegNotifyFlags, PW32G(registry_event), TRUE);
                }
                if (!LoadDirectory(PW32G(registry_directories), PW32G(registry_key), "", 0, NULL)) {
                        return;
                }
        } else if (PW32G(registry_event) && WaitForSingleObject(PW32G(registry_event), 0) == WAIT_OBJECT_0) {
                RegNotifyChangeKeyValue(PW32G(registry_key), TRUE, RegNotifyFlags, PW32G(registry_event), TRUE);
                zend_hash_clean(PW32G(registry_directories));
                if (!LoadDirectory(PW32G(registry_directories), PW32G(registry_key), "", 0, NULL)) {
                        return;
                }
        } else if (zend_hash_num_elements(PW32G(registry_directories)) == 0) {
                return;
        }

        orig_path = path = estrdup(path);

        /* Get rid of C:, if exists */
        p = strchr(path, ':');
        if (p) {
                *p = path[0];   /* replace the colon with the drive letter */
                path = p;               /* make path point to the drive letter */
        } else {
                if (path[0] != '\\' && path[0] != '/') {
                        char tmp_buf[MAXPATHLEN], *cwd;
                        char drive_letter;

                        /* get current working directory and prepend it to the path */
                        if (!VCWD_GETCWD(tmp_buf, MAXPATHLEN)) {
                                efree(orig_path);
                                return;
                        }
                        cwd = strchr(tmp_buf, ':');
                        if (!cwd) {
                                drive_letter = 'C';
                                cwd = tmp_buf;
                        } else {
                                drive_letter = tmp_buf[0];
                                cwd++;
                        }
                        while (*cwd == '\\' || *cwd == '/') {
                                cwd++;
                        }
                        spprintf(&path, 0, "%c\\%s\\%s", drive_letter, cwd, orig_path);
                        efree(orig_path);
                        orig_path = path;
                }
        }

        path_len = 0;
        while (path[path_len] != 0) {
                if (path[path_len] == '\\') {
                        path[path_len] = '/';
                }
                path_len++;
        }
        zend_str_tolower(path, path_len);
        while (path_len >= 0) {
                if (zend_hash_find(PW32G(registry_directories), path, path_len+1, (void**)&pht) == SUCCESS) {
                        HashTable *ht = *pht;
                        HashPosition pos;
                        char *index;
                        uint index_len;
                        ulong num;
                        zval **data;

                        for (zend_hash_internal_pointer_reset_ex(ht, &pos);
                             zend_hash_get_current_data_ex(ht, (void**)&data, &pos) == SUCCESS &&
                             zend_hash_get_current_key_ex(ht, &index, &index_len, &num, 0, &pos) == HASH_KEY_IS_STRING;
                             zend_hash_move_forward_ex(ht, &pos)) {
                                zend_alter_ini_entry(index, index_len, Z_STRVAL_PP(data), Z_STRLEN_PP(data), PHP_INI_USER, PHP_INI_STAGE_ACTIVATE);
                        }
                        break;
                }
                if (--path_len > 0) {
                        while (path_len > 0 && path[path_len] != '/') {
                                path_len--;
                        }
                }
                path[path_len] = 0;
        }

        efree(orig_path);
}

#define PHPRC_REGISTRY_NAME "IniFilePath"

char *GetIniPathFromRegistry()
{
        char *reg_location = NULL;
        HKEY hKey;
        
        if (OpenPhpRegistryKey(NULL, &hKey)) {
                DWORD buflen = MAXPATHLEN;
                reg_location = emalloc(MAXPATHLEN+1);
                if(RegQueryValueEx(hKey, PHPRC_REGISTRY_NAME, 0, NULL, reg_location, &buflen) != ERROR_SUCCESS) {
                        efree(reg_location);
                        reg_location = NULL;
                        return reg_location;
                }
                RegCloseKey(hKey);
        }
        return reg_location;
}

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