Initial Anope Import

git-svn-id: svn://svn.anope.org/anope/trunk@1 31f1291d-b8d6-0310-a050-a5561fc1590b


git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@1 5417fbe8-f217-4b02-8779-1006273d7864

1 files changed, 1399 insertions, 0 deletions

diff --git a/modules.c b/modules.c
new file mode 100644
index 000000000..99654792b
--- /dev/null
+++ b/modules.c
@@ -0,0 +1,1399 @@
+/* Modular support
+ *
+ * (C) 2003 Anope Team
+ * Contact us at info@anope.org
+ *
+ * Please read COPYING and README for furhter details.
+ *
+ * Based on the original code of Epona by Lara.
+ * Based on the original code of Services by Andy Church.
+ *
+ * $Id: modules.c,v 1.37 2004/03/11 16:50:01 rob Exp $
+ *
+ */
+#include "modules.h"
+#include "language.h"
+
+/*
+ * Disable the modules on OpenBSD (for now) 
+ * there is work in progress for this.
+ */
+#ifdef __OpenBSD__
+#ifdef USE_MODULES
+#undef USE_MODULES
+#endif                          /* USE_MODULES */
+#endif                          /* __OpenBSD__ */
+
+#ifdef USE_MODULES
+#include <dlfcn.h>
+#endif
+
+/**
+ * Declare all the list's we want to use here
+ **/
+CommandHash *HOSTSERV[MAX_CMD_HASH];
+CommandHash *BOTSERV[MAX_CMD_HASH];
+CommandHash *MEMOSERV[MAX_CMD_HASH];
+CommandHash *NICKSERV[MAX_CMD_HASH];
+CommandHash *CHANSERV[MAX_CMD_HASH];
+CommandHash *HELPSERV[MAX_CMD_HASH];
+CommandHash *OPERSERV[MAX_CMD_HASH];
+MessageHash *IRCD[MAX_CMD_HASH];
+ModuleHash *MODULE_HASH[MAX_CMD_HASH];
+
+Module *mod_current_module;
+char *mod_current_module_name = NULL;
+char *mod_current_buffer = NULL;
+int mod_current_op;
+User *mod_current_user;
+ModuleCallBack *moduleCallBackHead = NULL;
+int displayCommand(Command * c);
+int displayCommandFromHash(CommandHash * cmdTable[], char *name);
+int displayMessageFromHashl(char *name);
+int displayMessage(Message * m);
+
+/*******************************************************************************
+ * Module Functions
+ *******************************************************************************/
+void modules_init(void)
+{
+#ifdef USE_MODULES
+    int idx;
+    Module *m;
+    for (idx = 0; idx < ModulesNumber; idx++) {
+        m = findModule(ModulesAutoload[idx]);
+        if (!m) {
+            m = createModule(ModulesAutoload[idx]);
+            mod_current_module = m;
+            mod_current_user = NULL;
+            alog("trying to load [%s]", mod_current_module->name);
+            alog("status: [%d]", loadModule(mod_current_module, NULL));
+            mod_current_module = NULL;
+            mod_current_user = NULL;
+        }
+    }
+#endif
+}
+
+void modules_delayed_init(void)
+{
+#ifdef USE_MODULES
+    int idx;
+    Module *m;
+    for (idx = 0; idx < ModulesDelayedNumber; idx++) {
+        m = findModule(ModulesDelayedAutoload[idx]);
+        if (!m) {
+            m = createModule(ModulesDelayedAutoload[idx]);
+            mod_current_module = m;
+            mod_current_user = NULL;
+            alog("trying to load [%s]", mod_current_module->name);
+            alog("status: [%d]", loadModule(mod_current_module, NULL));
+            mod_current_module = NULL;
+            mod_current_user = NULL;
+        }
+    }
+#endif
+}
+
+Module *createModule(char *filename)
+{
+    Module *m;
+    if (!filename) {
+        return NULL;
+    }
+    if ((m = malloc(sizeof(Module))) == NULL) {
+        fatal("Out of memory!");
+    }
+    m->name = sstrdup(filename);        /* Our Name */
+    m->handle = NULL;           /* Handle */
+    m->version = NULL;
+    m->author = NULL;
+    m->nickHelp = NULL;
+    m->chanHelp = NULL;
+    m->memoHelp = NULL;
+    m->botHelp = NULL;
+    m->operHelp = NULL;
+    m->hostHelp = NULL;
+    m->helpHelp = NULL;
+
+    return m;                   /* return a nice new module */
+}
+
+int destroyModule(Module * m)
+{
+    if (!m) {
+        return MOD_ERR_PARAMS;
+    }
+    if (m->name) {
+        free(m->name);
+    }
+    if (m->filename) {
+        remove(m->filename);
+        free(m->filename);
+    }
+    m->handle = NULL;
+    if (m->author) {
+        free(m->author);
+    }
+    if (m->version) {
+        free(m->version);
+    }
+    /* No need to free our cmd/msg list, as they will always be empty by the module is destroyed */
+    free(m);
+    return MOD_ERR_OK;
+}
+
+int addModule(Module * m)
+{
+    int index = 0;
+    ModuleHash *current = NULL;
+    ModuleHash *newHash = NULL;
+    ModuleHash *lastHash = NULL;
+
+    index = CMD_HASH(m->name);
+
+    for (current = MODULE_HASH[index]; current; current = current->next) {
+        if (strcasecmp(m->name, current->name) == 0)
+            return MOD_ERR_EXISTS;
+        lastHash = current;
+    }
+
+    if ((newHash = malloc(sizeof(ModuleHash))) == NULL) {
+        fatal("Out of memory");
+    }
+    m->time = time(NULL);
+    newHash->next = NULL;
+    newHash->name = sstrdup(m->name);
+    newHash->m = m;
+
+    if (lastHash == NULL)
+        MODULE_HASH[index] = newHash;
+    else
+        lastHash->next = newHash;
+    return MOD_ERR_OK;
+}
+
+int delModule(Module * m)
+{
+    int index = 0;
+    ModuleHash *current = NULL;
+    ModuleHash *lastHash = NULL;
+
+    if (!m) {
+        return MOD_ERR_PARAMS;
+    }
+
+    index = CMD_HASH(m->name);
+
+    for (current = MODULE_HASH[index]; current; current = current->next) {
+        if (strcasecmp(m->name, current->name) == 0) {
+            if (!lastHash) {
+                MODULE_HASH[index] = current->next;
+            } else {
+                lastHash->next = current->next;
+            }
+            destroyModule(current->m);
+            free(current->name);
+            free(current);
+            return MOD_ERR_OK;
+        }
+        lastHash = current;
+    }
+    return MOD_ERR_NOEXIST;
+}
+
+Module *findModule(char *name)
+{
+    int idx;
+    ModuleHash *current = NULL;
+    if (!name) {
+        return NULL;
+    }
+    idx = CMD_HASH(name);
+
+    for (current = MODULE_HASH[idx]; current; current = current->next) {
+        if (stricmp(name, current->name) == 0) {
+            return current->m;
+        }
+    }
+    return NULL;
+
+}
+
+int moduleCopyFile(char *name)
+{
+#ifdef USE_MODULES
+    int ch;
+    FILE *source, *target;
+    char output[4096];
+    char input[4096];
+    int len;
+
+    strncpy(output, MODULE_PATH, 4095); /* Get full path with .so extension */
+    strncpy(input, MODULE_PATH, 4095);  /* Get full path with .so extension */
+    len = strlen(output);
+    strncat(output, "runtime/", 4095 - len);
+    len += strlen(output);
+    strncat(output, name, 4095 - len);
+    strncat(input, name, 4095 - len);
+    len += strlen(output);
+    strncat(output, ".so", 4095 - len);
+    strncat(input, ".so", 4095 - len);
+
+    if ((source = fopen(input, "r")) == NULL) {
+        return MOD_ERR_NOEXIST;
+    }
+
+    if ((target = fopen(output, "w")) == NULL) {
+        return MOD_ERR_FILE_IO;
+    }
+    while ((ch = fgetc(source)) != EOF) {
+        fputc(ch, target);
+    }
+    fclose(source);
+    if (fclose(target) != 0) {
+        return MOD_ERR_FILE_IO;
+    }
+#endif
+    return MOD_ERR_OK;
+}
+
+int loadModule(Module * m, User * u)
+{
+#ifdef USE_MODULES
+    char buf[4096];
+    int len;
+    const char *err;
+    int (*func) (int, char **);
+    int ret = 0;
+    Module *m2;
+    if (!m || !m->name) {
+        return MOD_ERR_PARAMS;
+    }
+    if (m->handle) {
+        return MOD_ERR_EXISTS;
+    }
+    if ((m2 = findModule(m->name)) != NULL) {
+        return MOD_ERR_EXISTS;
+    }
+
+    moduleCopyFile(m->name);
+
+    strncpy(buf, MODULE_PATH, 4095);    /* Get full path with .so extension */
+    len = strlen(buf);
+    strncat(buf, "runtime/", 4095 - len);
+    len += strlen(buf);
+    strncat(buf, m->name, 4095 - len);
+    len += strlen(buf);
+    strncat(buf, ".so", 4095 - len);
+
+    m->filename = sstrdup(buf);
+#ifdef HAS_RTLD_LOCAL
+    m->handle = dlopen(m->filename, RTLD_LAZY | RTLD_LOCAL);
+#else
+    m->handle = dlopen(m->filename, RTLD_LAZY);
+#endif
+    if ((err = dlerror()) != NULL) {
+        alog(err);
+        if (u) {
+            notice_lang(s_OperServ, u, OPER_MODULE_LOAD_FAIL, m->name);
+        }
+        return MOD_ERR_NOLOAD;
+    }
+
+    func = dlsym(m->handle, "AnopeInit");
+    if ((err = dlerror()) != NULL) {
+        dlclose(m->handle);     /* If no AnopeInit - it isnt an Anope Module, close it */
+        return MOD_ERR_NOLOAD;
+    }
+    if (func) {
+        mod_current_module_name = m->name;
+        ret = func(0, NULL);    /* exec AnopeInit */
+        if (ret == MOD_STOP) {
+            alog("%s requested unload...", m->name);
+            unloadModule(m, NULL);
+            mod_current_module_name = NULL;
+            return MOD_ERR_NOLOAD;
+        }
+
+        mod_current_module_name = NULL;
+    }
+
+    if (u) {
+        wallops(s_OperServ, "%s loaded module %s", u->nick, m->name);
+        notice_lang(s_OperServ, u, OPER_MODULE_LOADED, m->name);
+    }
+    addModule(m);
+    return MOD_ERR_OK;
+
+#else
+    return MOD_ERR_NOLOAD;
+#endif
+}
+
+int unloadModule(Module * m, User * u)
+{
+#ifdef USE_MODULES
+    void (*func) ();
+
+    if (!m || !m->handle) {
+        if (u) {
+            notice_lang(s_OperServ, u, OPER_MODULE_REMOVE_FAIL, m->name);
+        }
+        return MOD_ERR_PARAMS;
+    }
+
+    if (prepForUnload(mod_current_module) != MOD_ERR_OK) {
+        return MOD_ERR_UNKNOWN;
+    }
+
+    func = dlsym(m->handle, "AnopeFini");
+    if (func) {
+        func();                 /* exec AnopeFini */
+    }
+
+    if ((dlclose(m->handle)) != 0) {
+        alog(dlerror());
+        if (u) {
+            notice_lang(s_OperServ, u, OPER_MODULE_REMOVE_FAIL, m->name);
+        }
+        return MOD_ERR_NOUNLOAD;
+    } else {
+        if (u) {
+            wallops(s_OperServ, "%s unloaded module %s", u->nick, m->name);
+            notice_lang(s_OperServ, u, OPER_MODULE_UNLOADED, m->name);
+        }
+        delModule(m);
+        return MOD_ERR_OK;
+    }
+#else
+    return MOD_ERR_NOUNLOAD;
+#endif
+}
+
+int prepForUnload(Module * m)
+{
+    int idx;
+    CommandHash *current = NULL;
+    MessageHash *mcurrent = NULL;
+    Command *c;
+    Message *msg;
+
+    if (!m) {
+        return MOD_ERR_PARAMS;
+    }
+
+    /* Kill any active callbacks this module has */
+    moduleCallBackPrepForUnload(m->name);
+
+    /**
+     * ok, im going to walk every hash looking for commands we own, now, not exactly elegant or efficiant :)
+     **/
+    for (idx = 0; idx < MAX_CMD_HASH; idx++) {
+        for (current = HS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(HOSTSERV, c->name);
+                }
+            }
+        }
+
+        for (current = BS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(BOTSERV, c->name);
+                }
+            }
+        }
+
+        for (current = MS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(MEMOSERV, c->name);
+                }
+            }
+        }
+
+        for (current = NS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(NICKSERV, c->name);
+                }
+            }
+        }
+
+        for (current = CS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(CHANSERV, c->name);
+                }
+            }
+        }
+
+        for (current = HE_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (strcmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(HELPSERV, c->name);
+                }
+            }
+        }
+
+        for (current = OS_cmdTable[idx]; current; current = current->next) {
+            for (c = current->c; c; c = c->next) {
+                if ((c->mod_name) && (stricmp(c->mod_name, m->name) == 0)) {
+                    moduleDelCommand(OPERSERV, c->name);
+                }
+            }
+        }
+
+        for (mcurrent = IRCD[idx]; mcurrent; mcurrent = mcurrent->next) {
+            for (msg = mcurrent->m; msg; msg = msg->next) {
+                if ((msg->mod_name)
+                    && (stricmp(msg->mod_name, m->name) == 0)) {
+                    moduleDelMessage(msg->name);
+                }
+            }
+        }
+    }
+    return MOD_ERR_OK;
+}
+
+/*******************************************************************************
+ * Command Functions
+ *******************************************************************************/
+Command *createCommand(const char *name, int (*func) (User * u),
+                       int (*has_priv) (User * u), int help_all,
+                       int help_reg, int help_oper, int help_admin,
+                       int help_root)
+{
+    Command *c;
+    if ((c = malloc(sizeof(Command))) == NULL) {
+        fatal("Out of memory!");
+    }
+    c->name = sstrdup(name);
+    c->routine = func;
+    c->has_priv = has_priv;
+    c->helpmsg_all = help_all;
+    c->helpmsg_reg = help_reg;
+    c->helpmsg_oper = help_oper;
+    c->helpmsg_admin = help_admin;
+    c->helpmsg_root = help_root;
+    c->help_param1 = NULL;
+    c->help_param2 = NULL;
+    c->help_param3 = NULL;
+    c->help_param4 = NULL;
+    c->next = NULL;
+    c->mod_name = NULL;
+    c->service = NULL;
+    c->all_help = NULL;
+    c->regular_help = NULL;
+    c->oper_help = NULL;
+    c->admin_help = NULL;
+    c->root_help = NULL;
+    return c;
+}
+
+int destroyCommand(Command * c)
+{
+    if (!c) {
+        return MOD_ERR_PARAMS;
+    }
+    if (c->core == 1) {
+        return MOD_ERR_UNKNOWN;
+    }
+    if (c->name) {
+        free(c->name);
+    }
+    c->routine = NULL;
+    c->has_priv = NULL;
+    c->helpmsg_all = -1;
+    c->helpmsg_reg = -1;
+    c->helpmsg_oper = -1;
+    c->helpmsg_admin = -1;
+    c->helpmsg_root = -1;
+    if (c->help_param1) {
+        free(c->help_param1);
+    }
+    if (c->help_param2) {
+        free(c->help_param2);
+    }
+    if (c->help_param3) {
+        free(c->help_param3);
+    }
+    if (c->help_param4) {
+        free(c->help_param4);
+    }
+    if (c->mod_name) {
+        free(c->mod_name);
+    }
+    if (c->service) {
+        free(c->service);
+    }
+    c->next = NULL;
+    free(c);
+    return MOD_ERR_OK;
+}
+
+int addCoreCommand(CommandHash * cmdTable[], Command * c)
+{
+    if (!cmdTable || !c) {
+        return MOD_ERR_PARAMS;
+    }
+    c->core = 1;
+    c->next = NULL;
+    return addCommand(cmdTable, c, 0);
+}
+
+int moduleAddCommand(CommandHash * cmdTable[], Command * c, int pos)
+{
+    int status;
+
+    if (!cmdTable || !c) {
+        return MOD_ERR_PARAMS;
+    }
+    if (!mod_current_module) {
+        return MOD_ERR_UNKNOWN;
+    }                           /* shouldnt happen */
+    c->core = 0;
+    c->mod_name = sstrdup(mod_current_module->name);
+
+    if (cmdTable == HOSTSERV) {
+        c->service = sstrdup(s_HostServ);
+    } else if (cmdTable == BOTSERV) {
+        c->service = sstrdup(s_BotServ);
+    } else if (cmdTable == MEMOSERV) {
+        c->service = sstrdup(s_MemoServ);
+    } else if (cmdTable == CHANSERV) {
+        c->service = sstrdup(s_ChanServ);
+    } else if (cmdTable == NICKSERV) {
+        c->service = sstrdup(s_NickServ);
+    } else if (cmdTable == HELPSERV) {
+        c->service = sstrdup(s_HelpServ);
+    } else if (cmdTable == OPERSERV) {
+        c->service = sstrdup(s_OperServ);
+    } else
+        c->service = sstrdup("Unknown");
+
+    if (debug)
+        displayCommandFromHash(cmdTable, c->name);
+    status = addCommand(cmdTable, c, pos);
+    if (debug)
+        displayCommandFromHash(cmdTable, c->name);
+    if (status != MOD_ERR_OK) {
+        alog("ERROR! [%d]", status);
+    }
+    return status;
+}
+
+int moduleDelCommand(CommandHash * cmdTable[], char *name)
+{
+    Command *c = NULL;
+    Command *cmd = NULL;
+    int status = 0;
+
+    if (!mod_current_module) {
+        return MOD_ERR_UNKNOWN;
+    }
+
+    c = findCommand(cmdTable, name);
+    if (!c) {
+        return MOD_ERR_NOEXIST;
+    }
+
+
+    for (cmd = c; cmd; cmd = cmd->next) {
+        if (cmd->mod_name
+            && strcasecmp(cmd->mod_name, mod_current_module->name) == 0) {
+            if (debug) {
+                displayCommandFromHash(cmdTable, name);
+            }
+            status = delCommand(cmdTable, cmd, mod_current_module->name);
+            if (debug) {
+                displayCommandFromHash(cmdTable, name);
+            }
+        }
+    }
+    return status;
+}
+
+int displayCommandFromHash(CommandHash * cmdTable[], char *name)
+{
+    CommandHash *current = NULL;
+    int index = 0;
+    index = CMD_HASH(name);
+    if (debug > 1) {
+        alog("trying to display command %s", name);
+    }
+    for (current = cmdTable[index]; current; current = current->next) {
+        if (strcasecmp(name, current->name) == 0) {
+            displayCommand(current->c);
+        }
+    }
+    if (debug > 1) {
+        alog("done displaying command %s", name);
+    }
+    return 0;
+}
+
+
+int displayCommand(Command * c)
+{
+    Command *cmd = NULL;
+    int i = 0;
+    alog("Displaying command list for %s", c->name);
+    for (cmd = c; cmd; cmd = cmd->next) {
+        alog("%d:  %p", ++i, cmd);
+    }
+    alog("end");
+    return 0;
+}
+
+int displayMessageFromHash(char *name)
+{
+    MessageHash *current = NULL;
+    int index = 0;
+    index = CMD_HASH(name);
+    if (debug > 1) {
+        alog("trying to display message %s", name);
+    }
+    for (current = IRCD[index]; current; current = current->next) {
+        if (strcasecmp(name, current->name) == 0) {
+            displayMessage(current->m);
+        }
+    }
+    if (debug > 1) {
+        alog("done displaying message %s", name);
+    }
+    return 0;
+}
+
+int displayMessage(Message * m)
+{
+    Message *msg = NULL;
+    int i = 0;
+    alog("Displaying message list for %s", m->name);
+    for (msg = m; msg; msg = msg->next) {
+        alog("%d: %p", ++i, msg);
+    }
+    alog("end");
+    return 0;
+}
+
+
+/**
+ * Add a command to a command table
+ * only add if were unique, pos = 0;
+ * if we want it at the "head" of that command, pos = 1
+ * at the tail, pos = 2
+ **/
+int addCommand(CommandHash * cmdTable[], Command * c, int pos)
+{
+    /* We can assume both param's have been checked by this point.. */
+    int index = 0;
+    CommandHash *current = NULL;
+    CommandHash *newHash = NULL;
+    CommandHash *lastHash = NULL;
+    Command *tail = NULL;
+
+    if (!cmdTable || !c || (pos < 0 || pos > 2)) {
+        return MOD_ERR_PARAMS;
+    }
+
+    index = CMD_HASH(c->name);
+
+    for (current = cmdTable[index]; current; current = current->next) {
+        if ((c->service) && (current->c) && (current->c->service)
+            && (!strcmp(c->service, current->c->service) == 0)) {
+            continue;
+        }
+        if ((strcasecmp(c->name, current->name) == 0)) {        /* the cmd exist's we are a addHead */
+            if (pos == 1) {
+                c->next = current->c;
+                current->c = c;
+                if (debug)
+                    alog("existing cmd: (%p), new cmd (%p)", c->next, c);
+                return MOD_ERR_OK;
+            } else if (pos == 2) {
+
+                tail = current->c;
+                while (tail->next)
+                    tail = tail->next;
+                if (debug)
+                    alog("existing cmd: (%p), new cmd (%p)", tail, c);
+                tail->next = c;
+                c->next = NULL;
+
+                return MOD_ERR_OK;
+            } else
+                return MOD_ERR_EXISTS;
+        }
+        lastHash = current;
+    }
+
+    if ((newHash = malloc(sizeof(CommandHash))) == NULL) {
+        fatal("Out of memory");
+    }
+    newHash->next = NULL;
+    newHash->name = sstrdup(c->name);
+    newHash->c = c;
+
+    if (lastHash == NULL)
+        cmdTable[index] = newHash;
+    else
+        lastHash->next = newHash;
+
+    return MOD_ERR_OK;
+}
+
+int delCommand(CommandHash * cmdTable[], Command * c, char *mod_name)
+{
+    int index = 0;
+    CommandHash *current = NULL;
+    CommandHash *lastHash = NULL;
+    Command *tail = NULL, *last = NULL;
+
+    if (!c || !cmdTable) {
+        return MOD_ERR_PARAMS;
+    }
+
+    index = CMD_HASH(c->name);
+    for (current = cmdTable[index]; current; current = current->next) {
+        if (strcasecmp(c->name, current->name) == 0) {
+            if (!lastHash) {
+                tail = current->c;
+                if (tail->next) {
+                    while (tail) {
+                        if (mod_name && tail->mod_name
+                            && (stricmp(mod_name, tail->mod_name) == 0)) {
+                            if (last) {
+                                last->next = tail->next;
+                            } else {
+                                current->c = tail->next;
+                            }
+                            return MOD_ERR_OK;
+                        }
+                        last = tail;
+                        tail = tail->next;
+                    }
+                } else {
+                    cmdTable[index] = current->next;
+                    free(current->name);
+                    return MOD_ERR_OK;
+                }
+            } else {
+                tail = current->c;
+                if (tail->next) {
+                    while (tail) {
+                        if (mod_name && tail->mod_name
+                            && (stricmp(mod_name, tail->mod_name) == 0)) {
+                            if (last) {
+                                last->next = tail->next;
+                            } else {
+                                current->c = tail->next;
+                            }
+                            return MOD_ERR_OK;
+                        }
+                        last = tail;
+                        tail = tail->next;
+                    }
+                } else {
+                    lastHash->next = current->next;
+                    free(current->name);
+                    return MOD_ERR_OK;
+                }
+            }
+        }
+        lastHash = current;
+    }
+    return MOD_ERR_NOEXIST;
+}
+
+Command *findCommand(CommandHash * cmdTable[], const char *name)
+{
+    int idx;
+    CommandHash *current = NULL;
+    if (!cmdTable || !name) {
+        return NULL;
+    }
+
+    idx = CMD_HASH(name);
+
+    for (current = cmdTable[idx]; current; current = current->next) {
+        if (stricmp(name, current->name) == 0) {
+            return current->c;
+        }
+    }
+    return NULL;
+}
+
+/*******************************************************************************
+ * Message Functions
+ *******************************************************************************/
+
+Message *createMessage(char *name,
+                       int (*func) (char *source, int ac, char **av))
+{
+    Message *m = NULL;
+    if (!name || !func) {
+        return NULL;
+    }
+    if ((m = malloc(sizeof(Message))) == NULL) {
+        fatal("Out of memory!");
+    }
+    m->name = sstrdup(name);
+    m->func = func;
+    m->mod_name = NULL;
+    m->next = NULL;
+    return m;
+}
+
+Message *findMessage(MessageHash * msgTable[], const char *name)
+{
+    int idx;
+    MessageHash *current = NULL;
+    if (!msgTable || !name) {
+        return NULL;
+    }
+    idx = CMD_HASH(name);
+
+    for (current = msgTable[idx]; current; current = current->next) {
+        if (stricmp(name, current->name) == 0) {
+            return current->m;
+        }
+    }
+    return NULL;
+}
+
+int addMessage(MessageHash * msgTable[], Message * m, int pos)
+{
+    /* We can assume both param's have been checked by this point.. */
+    int index = 0;
+    MessageHash *current = NULL;
+    MessageHash *newHash = NULL;
+    MessageHash *lastHash = NULL;
+    Message *tail = NULL;
+
+    if (!msgTable || !m || (pos < 0 || pos > 2)) {
+        return MOD_ERR_PARAMS;
+    }
+
+    index = CMD_HASH(m->name);
+
+    for (current = msgTable[index]; current; current = current->next) {
+        if (strcasecmp(m->name, current->name) == 0) {  /* the msg exist's we are a addHead */
+            if (pos == 1) {
+                m->next = current->m;
+                current->m = m;
+                if (debug)
+                    alog("existing msg: (%p), new msg (%p)", m->next, m);
+                return MOD_ERR_OK;
+            } else if (pos == 2) {
+                tail = current->m;
+                while (tail->next)
+                    tail = tail->next;
+                if (debug)
+                    alog("existing msg: (%p), new msg (%p)", tail, m);
+                tail->next = m;
+                m->next = NULL;
+                return MOD_ERR_OK;
+            } else
+                return MOD_ERR_EXISTS;
+        }
+        lastHash = current;
+    }
+
+    if ((newHash = malloc(sizeof(MessageHash))) == NULL) {
+        fatal("Out of memory");
+    }
+    newHash->next = NULL;
+    newHash->name = sstrdup(m->name);
+    newHash->m = m;
+
+    if (lastHash == NULL)
+        msgTable[index] = newHash;
+    else
+        lastHash->next = newHash;
+    return MOD_ERR_OK;
+}
+
+int addCoreMessage(MessageHash * msgTable[], Message * m)
+{
+    if (!msgTable || !m) {
+        return MOD_ERR_PARAMS;
+    }
+    m->core = 1;
+    return addMessage(msgTable, m, 0);
+}
+
+int moduleAddMessage(Message * m, int pos)
+{
+    int status;
+
+    if (!m) {
+        return MOD_ERR_PARAMS;
+    }
+    if (!mod_current_module) {
+        return MOD_ERR_UNKNOWN;
+    }                           /* shouldnt happen */
+    m->core = 0;
+    m->mod_name = sstrdup(mod_current_module->name);
+
+    status = addMessage(IRCD, m, pos);
+    if (debug) {
+        displayMessageFromHash(m->name);
+    }
+    return status;
+}
+
+int moduleDelMessage(char *name)
+{
+    Message *m;
+    int status;
+
+    if (!mod_current_module) {
+        return MOD_ERR_UNKNOWN;
+    }
+    m = findMessage(IRCD, name);
+    if (!m) {
+        return MOD_ERR_NOEXIST;
+    }
+
+    status = delMessage(IRCD, m, mod_current_module->name);
+    if (debug) {
+        displayMessageFromHash(m->name);
+    }
+    return status;
+}
+
+int delMessage(MessageHash * msgTable[], Message * m, char *mod_name)
+{
+    int index = 0;
+    MessageHash *current = NULL;
+    MessageHash *lastHash = NULL;
+    Message *tail = NULL, *last = NULL;
+
+    if (!m || !msgTable) {
+        return MOD_ERR_PARAMS;
+    }
+
+    index = CMD_HASH(m->name);
+
+    for (current = msgTable[index]; current; current = current->next) {
+        if (strcasecmp(m->name, current->name) == 0) {
+            if (!lastHash) {
+                tail = current->m;
+                if (tail->next) {
+                    while (tail) {
+                        if (mod_name && tail->mod_name
+                            && (stricmp(mod_name, tail->mod_name) == 0)) {
+                            if (last) {
+                                last->next = tail->next;
+                            } else {
+                                current->m = tail->next;
+                            }
+                            return MOD_ERR_OK;
+                        }
+                        last = tail;
+                        tail = tail->next;
+                    }
+                } else {
+                    msgTable[index] = current->next;
+                    free(current->name);
+                    return MOD_ERR_OK;
+                }
+            } else {
+                tail = current->m;
+                if (tail->next) {
+                    while (tail) {
+                        if (mod_name && tail->mod_name
+                            && (stricmp(mod_name, tail->mod_name) == 0)) {
+                            if (last) {
+                                last->next = tail->next;
+                            } else {
+                                current->m = tail->next;
+                            }
+                            return MOD_ERR_OK;
+                        }
+                        last = tail;
+                        tail = tail->next;
+                    }
+                } else {
+                    lastHash->next = current->next;
+                    free(current->name);
+                    return MOD_ERR_OK;
+                }
+            }
+        }
+        lastHash = current;
+    }
+    return MOD_ERR_NOEXIST;
+}
+
+int destroyMessage(Message * m)
+{
+    if (!m) {
+        return MOD_ERR_PARAMS;
+    }
+    if (m->name) {
+        free(m->name);
+    }
+    m->func = NULL;
+    if (m->mod_name) {
+        free(m->mod_name);
+    }
+    m->next = NULL;
+    return MOD_ERR_OK;
+}
+
+void moduleAddVersion(char *version)
+{
+    if (mod_current_module && version) {
+        mod_current_module->version = sstrdup(version);
+    }
+}
+
+void moduleAddAuthor(char *author)
+{
+    if (mod_current_module && author) {
+        mod_current_module->author = sstrdup(author);
+    }
+}
+
+/*******************************************************************************
+ * Module Callback Functions
+ *******************************************************************************/
+int moduleAddCallback(char *name, time_t when,
+                      int (*func) (int argc, char *argv[]), int argc,
+                      char **argv)
+{
+    ModuleCallBack *new, *tmp, *prev;
+    int i;
+    new = malloc(sizeof(ModuleCallBack));
+    if (!new)
+        return MOD_ERR_MEMORY;
+
+    if (name)
+        new->name = sstrdup(name);
+    else
+        new->name = NULL;
+    new->when = when;
+    if (mod_current_module_name) {
+        new->owner_name = sstrdup(mod_current_module_name);
+    } else {
+        new->owner_name = NULL;
+    }
+    new->func = func;
+    new->argc = argc;
+    new->argv = malloc(sizeof(char *) * argc);
+    for (i = 0; i < argc; i++) {
+        new->argv[i] = sstrdup(argv[i]);
+    }
+    new->next = NULL;
+
+    if (moduleCallBackHead == NULL) {
+        moduleCallBackHead = new;
+    } else {                    /* find place in list */
+        tmp = moduleCallBackHead;
+        prev = tmp;
+        if (new->when < tmp->when) {
+            new->next = tmp;
+            moduleCallBackHead = new;
+        } else {
+            while (tmp && new->when >= tmp->when) {
+                prev = tmp;
+                tmp = tmp->next;
+            }
+            prev->next = new;
+            new->next = tmp;
+        }
+    }
+    if (debug)
+        alog("Added module CallBack: [%s] due to execute at %ld",
+             new->name ? new->name : "?", new->when);
+    return MOD_ERR_OK;
+}
+
+void moduleCallBackRun(void)
+{
+    ModuleCallBack *tmp;
+    if (!moduleCallBackHead) {
+        return;
+    }
+    tmp = moduleCallBackHead;
+    if (tmp->when <= time(NULL)) {
+        if (debug)
+            alog("Executing callback: %s", tmp->name ? tmp->name : "?");
+        if (tmp->func) {
+            tmp->func(tmp->argc, tmp->argv);
+            moduleCallBackDeleteEntry(NULL);    /* delete the head */
+        }
+    }
+    return;
+}
+
+void moduleCallBackDeleteEntry(ModuleCallBack * prev)
+{
+    ModuleCallBack *tmp = NULL;
+    int i;
+    if (prev == NULL) {
+        tmp = moduleCallBackHead;
+        moduleCallBackHead = tmp->next;
+    } else {
+        tmp = prev->next;
+        prev->next = tmp->next;
+    }
+    if (tmp->name)
+        free(tmp->name);
+    if (tmp->owner_name)
+        free(tmp->owner_name);
+    tmp->func = NULL;
+    for (i = 0; i < tmp->argc; i++) {
+        free(tmp->argv[i]);
+    }
+    tmp->argc = 0;
+    tmp->next = NULL;
+    free(tmp);
+}
+
+
+ModuleCallBack *moduleCallBackFindEntry(char *mod_name, boolean * found)
+{
+    ModuleCallBack *prev = NULL, *current = NULL;
+    *found = false;
+    current = moduleCallBackHead;
+    while (current != NULL) {
+        if (current->owner_name
+            && (strcmp(mod_name, current->owner_name) == 0)) {
+            *found = true;
+            break;
+        } else {
+            prev = current;
+            current = current->next;
+        }
+    }
+    if (current == moduleCallBackHead) {
+        return NULL;
+    } else {
+        return prev;
+    }
+}
+
+void moduleDelCallback(char *name)
+{
+    ModuleCallBack *current = NULL;
+    ModuleCallBack *prev = NULL, *tmp = NULL;
+    int del = 0;
+    if (!mod_current_module_name) {
+        return;
+    }
+    if (!name) {
+        return;
+    }
+    current = moduleCallBackHead;
+    while (current) {
+        if ((current->owner_name) && (current->name)) {
+            if ((strcmp(mod_current_module_name, current->owner_name) == 0)
+                && (strcmp(current->name, name) == 0)) {
+                if (debug) {
+                    alog("Removing CallBack %s for module %s", name,
+                         mod_current_module_name);
+                }
+                tmp = current->next;    /* get a pointer to the next record, as once we delete this record, we'll lose it :) */
+                moduleCallBackDeleteEntry(prev);        /* delete this record */
+                del = 1;        /* set the record deleted flag */
+            }
+        }
+        if (del == 1) {         /* if a record was deleted */
+            current = tmp;      /* use the value we stored in temp */
+            tmp = NULL;         /* clear it for next time */
+            del = 0;            /* reset the flag */
+        } else {
+            prev = current;     /* just carry on as normal */
+            current = current->next;
+        }
+    }
+}
+
+void moduleCallBackPrepForUnload(char *mod_name)
+{
+    boolean found = false;
+    ModuleCallBack *tmp = NULL;
+
+    tmp = moduleCallBackFindEntry(mod_name, &found);
+    while (found) {
+        if (debug) {
+            alog("Removing CallBack for module %s", mod_name);
+        }
+        moduleCallBackDeleteEntry(tmp);
+        tmp = moduleCallBackFindEntry(mod_name, &found);
+    }
+}
+
+char *moduleGetLastBuffer(void)
+{
+    char *tmp = NULL;
+    if (mod_current_buffer) {
+        tmp = strchr(mod_current_buffer, ' ');
+        if (tmp) {
+            tmp++;
+        }
+    }
+    return tmp;
+}
+
+/*******************************************************************************
+ * Module HELP Functions
+ *******************************************************************************/
+int moduleAddRootHelp(Command * c, int (*func) (User * u))
+{
+    if (c) {
+        c->root_help = func;
+        return MOD_STOP;
+    }
+    return MOD_CONT;
+}
+
+int moduleAddAdminHelp(Command * c, int (*func) (User * u))
+{
+    if (c) {
+        c->admin_help = func;
+        return MOD_STOP;
+    }
+    return MOD_CONT;
+}
+
+int moduleAddOperHelp(Command * c, int (*func) (User * u))
+{
+    if (c) {
+        c->oper_help = func;
+        return MOD_STOP;
+    }
+    return MOD_CONT;
+}
+
+int moduleAddRegHelp(Command * c, int (*func) (User * u))
+{
+    if (c) {
+        c->regular_help = func;
+        return MOD_STOP;
+    }
+    return MOD_CONT;
+}
+
+int moduleAddHelp(Command * c, int (*func) (User * u))
+{
+    if (c) {
+        c->all_help = func;
+        return MOD_STOP;
+    }
+    return MOD_CONT;
+}
+
+void moduleSetNickHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->nickHelp = func;
+    }
+}
+
+void moduleSetChanHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->chanHelp = func;
+    }
+}
+
+void moduleSetMemoHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->memoHelp = func;
+    }
+}
+
+void moduleSetBotHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->botHelp = func;
+    }
+}
+
+void moduleSetOperHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->operHelp = func;
+    }
+}
+
+void moduleSetHostHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->hostHelp = func;
+    }
+}
+
+void moduleSetHelpHelp(void (*func) (User * u))
+{
+    if (mod_current_module) {
+        mod_current_module->helpHelp = func;
+    }
+}
+
+void moduleDisplayHelp(int service, User * u)
+{
+#ifdef USE_MODULES
+    int idx;
+    int header_shown = 0;
+    ModuleHash *current = NULL;
+
+    for (idx = 0; idx != MAX_CMD_HASH; idx++) {
+        for (current = MODULE_HASH[idx]; current; current = current->next) {
+            if ((service == 1) && current->m->nickHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_NickServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->nickHelp(u);
+            } else if ((service == 2) && current->m->chanHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_ChanServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->chanHelp(u);
+            } else if ((service == 3) && current->m->memoHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_MemoServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->memoHelp(u);
+            } else if ((service == 4) && current->m->botHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_BotServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->botHelp(u);
+            } else if ((service == 5) && current->m->operHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_OperServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->operHelp(u);
+            } else if ((service == 6) && current->m->hostHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_HostServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->hostHelp(u);
+            } else if ((service == 7) && current->m->helpHelp) {
+                if (header_shown == 0) {
+                    notice_lang(s_HelpServ, u, MODULE_HELP_HEADER);
+                    header_shown = 1;
+                }
+                current->m->helpHelp(u);
+            }
+        }
+    }
+#endif
+}
+
+
+/* EOF */