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180 lines
5.3 KiB
C
180 lines
5.3 KiB
C
/*
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* The new sysinstall program.
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*
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* This is probably the last program in the `sysinstall' line - the next
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* generation being essentially a complete rewrite.
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*
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* $Id$
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "sysinstall.h"
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#define MAX_NUM_COMMANDS 10
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typedef struct {
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char key[FILENAME_MAX];
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struct {
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enum { CMD_SHELL, CMD_FUNCTION } type;
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void *ptr, *data;
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} cmds[MAX_NUM_COMMANDS];
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int ncmds;
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} Command;
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#define MAX_CMDS 200
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static Command *commandStack[MAX_CMDS];
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int numCommands;
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/* Nuke the command stack */
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void
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command_clear(void)
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{
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int i, j;
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for (i = 0; i < numCommands; i++)
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for (j = 0; j < commandStack[i]->ncmds; j++)
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if (commandStack[i]->cmds[j].type == CMD_SHELL)
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free(commandStack[i]->cmds[j].ptr);
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free(commandStack[i]);
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numCommands = 0;
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}
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static void
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addit(char *key, int type, void *cmd, void *data)
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{
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int i;
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/* First, look for the key already present and add a command to it if found */
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for (i = 0; i < numCommands; i++) {
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if (!strcmp(commandStack[i]->key, key)) {
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if (commandStack[i]->ncmds == MAX_NUM_COMMANDS)
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msgFatal("More than %d commands stacked up behind %s??", MAX_NUM_COMMANDS, key);
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commandStack[i]->cmds[commandStack[i]->ncmds].type = type;
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commandStack[i]->cmds[commandStack[i]->ncmds].ptr = cmd;
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commandStack[i]->cmds[commandStack[i]->ncmds].data = data;
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++(commandStack[i]->ncmds);
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return;
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}
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}
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if (numCommands == MAX_CMDS)
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msgFatal("More than %d commands accumulated??", MAX_CMDS);
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/* If we fell to here, it's a new key */
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commandStack[numCommands] = safe_malloc(sizeof(Command));
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strcpy(commandStack[numCommands]->key, key);
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commandStack[numCommands]->ncmds = 1;
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commandStack[numCommands]->cmds[0].type = type;
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commandStack[numCommands]->cmds[0].ptr = cmd;
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commandStack[numCommands]->cmds[0].data = data;
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++numCommands;
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}
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/* Add a shell command under a given key */
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void
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command_shell_add(char *key, char *fmt, ...)
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{
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va_list args;
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char *cmd;
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cmd = (char *)safe_malloc(256);
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va_start(args, fmt);
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vsnprintf(cmd, 256, fmt, args);
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va_end(args);
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addit(key, CMD_SHELL, cmd, NULL);
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}
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/* Add a shell command under a given key */
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void
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command_func_add(char *key, commandFunc func, void *data)
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{
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addit(key, CMD_FUNCTION, func, data);
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}
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static int
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sort_compare(Command *p1, Command *p2)
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{
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if (!p1 && !p2)
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return 0;
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else if (!p1 && p2) /* NULL has a "greater" value for commands */
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return 1;
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else if (p1 && !p2)
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return -1;
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else
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return strcmp(p1->key, p2->key);
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}
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void
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command_sort(void)
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{
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int i, j;
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commandStack[numCommands] = NULL;
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/* Just do a crude bubble sort since the list is small */
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for (i = 0; i < numCommands; i++) {
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for (j = 0; j < numCommands; j++) {
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if (sort_compare(commandStack[j], commandStack[j + 1]) > 0) {
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Command *tmp = commandStack[j];
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commandStack[j] = commandStack[j + 1];
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commandStack[j + 1] = tmp;
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}
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}
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}
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}
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/* Run all accumulated commands in sorted order */
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void
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command_execute(void)
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{
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int i, j, ret;
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commandFunc func;
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for (i = 0; i < numCommands; i++) {
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for (j = 0; j < commandStack[i]->ncmds; j++) {
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/* If it's a shell command, run system on it */
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if (commandStack[i]->cmds[j].type == CMD_SHELL) {
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msgNotify("Doing %s", commandStack[i]->cmds[j].ptr);
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ret = vsystem((char *)commandStack[i]->cmds[j].ptr);
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if (isDebug())
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msgDebug("Command `%s' returns status %d\n", commandStack[i]->cmds[j].ptr, ret);
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}
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else {
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/* It's a function pointer - call it with the key and the data */
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func = (commandFunc)commandStack[i]->cmds[j].ptr;
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if (isDebug())
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msgDebug("%x: Execute(%s, %s)", func, commandStack[i]->key, commandStack[i]->cmds[j].data);
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ret = (*func)(commandStack[i]->key, commandStack[i]->cmds[j].data);
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if (isDebug())
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msgDebug("Function @ %x returns status %d\n", commandStack[i]->cmds[j].ptr, ret);
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}
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}
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}
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}
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