module.c 6.27 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12
/* Icecast
 *
 * This program is distributed under the GNU General Public License, version 2.
 * A copy of this license is included with this source.
 *
 * Copyright 2018,      Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

13
#include <stdlib.h>
14 15 16 17 18 19 20
#include <string.h>

#include "common/thread/thread.h"
#include "common/avl/avl.h"

#include "refobject.h"
#include "module.h"
21
#include "cfgfile.h" /* for XMLSTR() */
22 23 24 25 26 27

struct module_tag {
    refobject_base_t __base;
    mutex_t lock;
    const module_client_handler_t *client_handlers;
    size_t client_handlers_len;
28 29
    module_setup_handler_t freecb;
    void *userdata;
30 31
    char *management_link_url;
    char *management_link_title;
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71
};


struct module_container_tag {
    refobject_base_t __base;
    mutex_t lock;
    avl_tree *module;
};

static int compare_refobject_t_name(void *arg, void *a, void *b)
{
    return strcmp(refobject_get_name(a), refobject_get_name(b));
}

static void __module_container_free(refobject_t self, void **userdata)
{
    module_container_t *cont = REFOBJECT_TO_TYPE(self, module_container_t *);
    thread_mutex_destroy(&(cont->lock));
    avl_tree_free(cont->module, (avl_free_key_fun_type)refobject_unref);
}

module_container_t *    module_container_new(void)
{
    module_container_t *ret = REFOBJECT_TO_TYPE(refobject_new(sizeof(module_container_t), __module_container_free, NULL, NULL, NULL), module_container_t *);

    if (!ret)
        return NULL;

    thread_mutex_create(&(ret->lock));

    ret->module = avl_tree_new(compare_refobject_t_name, NULL);

    return ret;
}

int                     module_container_add_module(module_container_t *self, module_t *module)
{
    if (!self)
        return -1;

72 73 74
    if (refobject_ref(module) != 0)
        return -1;

75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111
    thread_mutex_lock(&(self->lock));
    avl_insert(self->module, module);
    thread_mutex_unlock(&(self->lock));

    return 0;
}

int                     module_container_delete_module(module_container_t *self, const char *name)
{
    module_t *module;

    if (!self || !name)
        return -1;

    module = module_container_get_module(self, name);
    if (!module)
        return -1;

    thread_mutex_lock(&(self->lock));
    avl_delete(self->module, module, (avl_free_key_fun_type)refobject_unref);
    thread_mutex_unlock(&(self->lock));

    refobject_unref(module);

    return 0;
}

module_t *              module_container_get_module(module_container_t *self, const char *name)
{
    refobject_t search;
    module_t *ret;

    if (!self || !name)
        return NULL;

    search = refobject_new(sizeof(refobject_base_t), NULL, NULL, name, NULL);

112
    thread_mutex_lock(&(self->lock));
113 114 115
    if (avl_get_by_key(self->module, REFOBJECT_TO_TYPE(search, void *), (void**)&ret) != 0) {
        ret = NULL;
    }
116
    thread_mutex_unlock(&(self->lock));
117 118

    refobject_unref(search);
119
    refobject_ref(ret);
120 121 122 123

    return ret;
}

124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
xmlNodePtr                      module_container_get_modulelist_as_xml(module_container_t *self)
{
    xmlNodePtr root;
    avl_node *avlnode;

    if (!self)
        return NULL;

    root = xmlNewNode(NULL, XMLSTR("modules"));
    if (!root)
        return NULL;

    thread_mutex_lock(&(self->lock));
    avlnode = avl_get_first(self->module);
    while (avlnode) {
        module_t *module = avlnode->key;
        xmlNodePtr node = xmlNewChild(root, NULL, XMLSTR("module"), NULL);

        xmlSetProp(node, XMLSTR("name"), XMLSTR(refobject_get_name(module)));
143 144 145 146
        if (module->management_link_url)
            xmlSetProp(node, XMLSTR("management-url"), XMLSTR(module->management_link_url));
        if (module->management_link_title)
            xmlSetProp(node, XMLSTR("management-title"), XMLSTR(module->management_link_title));
147 148 149 150 151 152 153 154

        avlnode = avl_get_next(avlnode);
    }
    thread_mutex_unlock(&(self->lock));

    return root;
}

155 156 157
static void __module_free(refobject_t self, void **userdata)
{
    module_t *mod = REFOBJECT_TO_TYPE(self, module_t *);
158 159 160 161 162 163 164

    if (mod->freecb)
        mod->freecb(mod, &(mod->userdata));

    if (mod->userdata)
        free(mod->userdata);

165 166 167
    free(mod->management_link_url);
    free(mod->management_link_title);

168 169 170 171 172 173 174 175 176 177 178 179
    thread_mutex_destroy(&(mod->lock));
}

module_t *              module_new(const char *name, module_setup_handler_t newcb, module_setup_handler_t freecb, void *userdata)
{
    module_t *ret = REFOBJECT_TO_TYPE(refobject_new(sizeof(module_t), __module_free, NULL, name, NULL), module_t *);

    if (!ret)
        return NULL;

    thread_mutex_create(&(ret->lock));

180 181 182 183 184 185 186 187 188 189
    ret->userdata = userdata;
    ret->freecb = freecb;

    if (newcb) {
        if (newcb(ret, &(ret->userdata)) != 0) {
            refobject_unref(ret);
            return NULL;
        }
    }

190 191 192
    return ret;
}

193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228
int                             module_add_link(module_t *self, const char *type, const char *url, const char *title)
{
    char *n_url = NULL;
    char *n_title = NULL;

    if (!self || !type)
        return -1;

    if (strcmp(type, "management-url") != 0)
        return -1;

    if (url) {
        n_url = strdup(url);
        if (!n_url)
            return -1;
    }

    if (title) {
        n_title = strdup(title);
        if (!n_title) {
            free(n_url);
            return -1;
        }
    }

    thread_mutex_lock(&(self->lock));
    free(self->management_link_url);
    free(self->management_link_title);

    self->management_link_url = n_url;
    self->management_link_title = n_title;
    thread_mutex_unlock(&(self->lock));

    return 0;
}

229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259
const module_client_handler_t * module_get_client_handler(module_t *self, const char *name)
{
    size_t i;

    if (!self || !name)
        return NULL;

    thread_mutex_lock(&(self->lock));
    for (i = 0; i < self->client_handlers_len; i++) {
        if (self->client_handlers[i].name && strcmp(self->client_handlers[i].name, name) == 0) {
            thread_mutex_unlock(&(self->lock));
            return &(self->client_handlers[i]);
        }
    }
    thread_mutex_unlock(&(self->lock));

    return NULL;
}

int                             module_add_client_handler(module_t *self, const module_client_handler_t *handlers, size_t len)
{
    if (!self)
        return -1;

    thread_mutex_lock(&(self->lock));
    self->client_handlers = handlers;
    self->client_handlers_len = len;
    thread_mutex_unlock(&(self->lock));

    return 0;
}