297 lines
7.1 KiB
C
297 lines
7.1 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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* $FreeBSD$
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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* Copyright (c) 2001
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* Murray Stokely. 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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/* Routines for dealing with variable lists */
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static void
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make_variable(char *var, char *value, int dirty)
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{
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Variable *vp;
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/* Trim leading and trailing whitespace */
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var = string_skipwhite(string_prune(var));
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if (!var || !*var)
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return;
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/* Now search to see if it's already in the list */
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for (vp = VarHead; vp; vp = vp->next) {
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if (!strcmp(vp->name, var)) {
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if (vp->dirty && !dirty)
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return;
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setenv(var, value, 1);
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free(vp->value);
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vp->value = strdup(value);
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if (dirty != -1)
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vp->dirty = dirty;
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return;
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}
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}
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setenv(var, value, 1);
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/* No? Create a new one */
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vp = (Variable *)safe_malloc(sizeof(Variable));
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vp->name = strdup(var);
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vp->value = strdup(value);
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if (dirty == -1)
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dirty = 0;
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vp->dirty = dirty;
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vp->next = VarHead;
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VarHead = vp;
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}
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void
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variable_set(char *var, int dirty)
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{
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char tmp[1024], *cp;
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if (!var)
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msgFatal("NULL variable name & value passed.");
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else if (!*var)
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msgDebug("Warning: Zero length name & value passed to variable_set()\n");
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SAFE_STRCPY(tmp, var);
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if ((cp = index(tmp, '=')) == NULL)
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msgFatal("Invalid variable format: %s", var);
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*(cp++) = '\0';
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make_variable(tmp, string_skipwhite(cp), dirty);
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}
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void
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variable_set2(char *var, char *value, int dirty)
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{
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if (!var || !value)
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msgFatal("Null name or value passed to set_variable2(%s) = %s!",
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var ? var : "", value ? value : "");
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else if (!*var || !*value)
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msgDebug("Warning: Zero length name or value passed to variable_set2(%s) = %s\n",
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var, value);
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make_variable(var, value, dirty);
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}
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char *
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variable_get(char *var)
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{
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return getenv(var);
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}
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int
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variable_cmp(char *var, char *value)
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{
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char *val;
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if ((val = variable_get(var)))
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return strcmp(val, value);
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return -1;
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}
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void
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variable_unset(char *var)
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{
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Variable *vp;
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char name[512], *cp;
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if ((cp = index(var, '=')) != NULL)
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sstrncpy(name, var, cp - var);
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else
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SAFE_STRCPY(name, var);
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unsetenv(name);
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/* Now search to see if it's in our list, if we have one.. */
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if (!VarHead)
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return;
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else if (!VarHead->next && !strcmp(VarHead->name, name)) {
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safe_free(VarHead->name);
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safe_free(VarHead->value);
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free(VarHead);
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VarHead = NULL;
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}
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else {
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for (vp = VarHead; vp; vp = vp->next) {
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if (!strcmp(vp->name, name)) {
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Variable *save = vp->next;
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safe_free(vp->name);
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safe_free(vp->value);
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*vp = *save;
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safe_free(save);
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break;
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}
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}
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}
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}
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/* Prompt user for the name of a variable */
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char *
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variable_get_value(char *var, char *prompt, int dirty)
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{
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char *cp;
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cp = variable_get(var);
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if (cp && variable_get(VAR_NONINTERACTIVE))
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return cp;
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else if ((cp = msgGetInput(cp, "%s", prompt)) != NULL)
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variable_set2(var, cp, dirty);
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else
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cp = NULL;
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return cp;
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}
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/* Check if value passed in data (in the form "variable=value") is
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equal to value of variable stored in env */
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int
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variable_check(char *data)
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{
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char *cp, *cp2, *cp3, tmp[256];
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if (!data)
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return FALSE;
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SAFE_STRCPY(tmp, data);
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if ((cp = index(tmp, '=')) != NULL) {
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*(cp++) = '\0';
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if (*cp == '"') { /* smash quotes if present */
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++cp;
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if ((cp3 = index(cp, '"')) != NULL)
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*cp3 = '\0';
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}
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else if ((cp3 = index(cp, ',')) != NULL)
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*cp3 = '\0';
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cp2 = variable_get(tmp);
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if (cp2) {
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if (!*cp)
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return TRUE;
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else
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return !strcmp(cp, cp2);
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}
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else
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return FALSE;
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}
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else
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return variable_get(tmp) ? TRUE : FALSE;
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}
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int
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dump_variables(dialogMenuItem *unused)
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{
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FILE *fp;
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Variable *vp;
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if (isDebug())
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msgDebug("Writing sysinstall variables to file..\n");
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fp = fopen("/etc/sysinstall.vars", "w");
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if (!fp) {
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msgConfirm("Unable to write to /etc/sysinstall.vars: %s",
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strerror(errno));
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return DITEM_FAILURE;
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}
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for (vp = VarHead; vp; vp = vp->next)
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fprintf(fp, "%s=\"%s\" (%d)\n", vp->name, vp->value, vp->dirty);
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fclose(fp);
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return DITEM_SUCCESS;
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}
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/* Free all of the variables, useful to really start over as when the
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user selects "restart" from the interrupt menu. */
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void
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free_variables(void)
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{
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Variable *vp;
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/* Free the variables from our list, if we have one.. */
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if (!VarHead)
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return;
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else if (!VarHead->next) {
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unsetenv(VarHead->name);
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safe_free(VarHead->name);
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safe_free(VarHead->value);
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free(VarHead);
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VarHead = NULL;
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}
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else {
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for (vp = VarHead; vp; ) {
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Variable *save = vp;
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unsetenv(vp->name);
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safe_free(vp->name);
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safe_free(vp->value);
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vp = vp->next;
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safe_free(save);
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}
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VarHead = NULL;
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}
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}
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/*
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* Persistent variables. The variables modified by these functions
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* are not cleared between invocations of sysinstall. This is useful
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* to allow the user to completely restart sysinstall, without having
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* it load all of the modules again from the installation media which
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* are still in memory.
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*/
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void
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pvariable_set(char *var)
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{
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char tmp[1024];
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if (!var)
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msgFatal("NULL variable name & value passed.");
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else if (!*var)
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msgDebug("Warning: Zero length name & value passed to variable_set()\n");
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/* Add a trivial namespace to whatever name the caller chooses. */
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SAFE_STRCPY(tmp, "SYSINSTALL_PVAR");
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if (index(var, '=') == NULL)
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msgFatal("Invalid variable format: %s", var);
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strlcat(tmp, var, 1024);
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putenv(tmp);
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}
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char *
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pvariable_get(char *var)
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{
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char tmp[1024];
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SAFE_STRCPY(tmp, "SYSINSTALL_PVAR");
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strlcat(tmp, var, 1024);
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return getenv(tmp);
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}
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