/* * Miscellaneous support routines.. * * $Id: misc.c,v 1.35 1997/06/13 07:11:56 jkh Exp $ * * Copyright (c) 1995 * Jordan Hubbard. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer, * verbatim and that no modifications are made prior to this * point in the file. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include "sysinstall.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Quick check to see if a file is readable */ Boolean file_readable(char *fname) { if (!access(fname, F_OK)) return TRUE; return FALSE; } /* Quick check to see if a file is executable */ Boolean file_executable(char *fname) { if (!access(fname, X_OK)) return TRUE; return FALSE; } /* Concatenate two strings into static storage */ char * string_concat(char *one, char *two) { static char tmp[FILENAME_MAX]; /* Yes, we're deliberately cavalier about not checking for overflow */ strcpy(tmp, one); strcat(tmp, two); return tmp; } /* sane strncpy() function */ char * sstrncpy(char *dst, const char *src, int size) { dst[size] = '\0'; return strncpy(dst, src, size); } /* Concatenate three strings into static storage */ char * string_concat3(char *one, char *two, char *three) { static char tmp[FILENAME_MAX]; /* Yes, we're deliberately cavalier about not checking for overflow */ strcpy(tmp, one); strcat(tmp, two); strcat(tmp, three); return tmp; } /* Clip the whitespace off the end of a string */ char * string_prune(char *str) { int len = str ? strlen(str) : 0; while (len && isspace(str[len - 1])) str[--len] = '\0'; return str; } /* run the whitespace off the front of a string */ char * string_skipwhite(char *str) { while (*str && isspace(*str)) ++str; return str; } /* copy optionally and allow second arg to be null */ char * string_copy(char *s1, char *s2) { if (!s1) return NULL; if (!s2) s1[0] = '\0'; else strcpy(s1, s2); return s1; } /* convert an integer to a string, using a static buffer */ char * itoa(int value) { static char buf[13]; snprintf(buf, 12, "%d", value); return buf; } Boolean directory_exists(const char *dirname) { DIR *tptr; if (!dirname) return FALSE; if (!strlen(dirname)) return FALSE; tptr = opendir(dirname); if (!tptr) return (FALSE); closedir(tptr); return (TRUE); } char * pathBaseName(const char *path) { char *pt; char *ret = (char *)path; pt = strrchr(path,(int)'/'); if (pt != 0) /* if there is a slash */ { ret = ++pt; /* start the file after it */ } return(ret); } /* A free guaranteed to take NULL ptrs */ void safe_free(void *ptr) { if (ptr) free(ptr); } /* A malloc that checks errors */ void * safe_malloc(size_t size) { void *ptr; if (size <= 0) msgFatal("Invalid malloc size of %d!", size); ptr = malloc(size); if (!ptr) msgFatal("Out of memory!"); bzero(ptr, size); return ptr; } /* A realloc that checks errors */ void * safe_realloc(void *orig, size_t size) { void *ptr; if (size <= 0) msgFatal("Invalid realloc size of %d!", size); ptr = realloc(orig, size); if (!ptr) msgFatal("Out of memory!"); return ptr; } /* Create a path biased from the VAR_INSTALL_ROOT variable (if not /) */ char * root_bias(char *path) { static char tmp[FILENAME_MAX]; char *cp = variable_get(VAR_INSTALL_ROOT); if (!strcmp(cp, "/")) return path; strcpy(tmp, variable_get(VAR_INSTALL_ROOT)); strcat(tmp, path); return tmp; } /* * These next routines are kind of specialized just for building item lists * for dialog_menu(). */ /* Add an item to an item list */ dialogMenuItem * item_add(dialogMenuItem *list, char *prompt, char *title, int (*checked)(dialogMenuItem *self), int (*fire)(dialogMenuItem *self), void (*selected)(dialogMenuItem *self, int is_selected), void *data, int aux, int *curr, int *max) { dialogMenuItem *d; if (*curr == *max) { *max += 20; list = (dialogMenuItem *)realloc(list, sizeof(dialogMenuItem) * *max); } d = &list[(*curr)++]; bzero(d, sizeof(*d)); d->prompt = prompt ? strdup(prompt) : NULL; d->title = title ? strdup(title) : NULL; d->checked = checked; d->fire = fire; d->selected = selected; d->data = data; d->aux = aux; return list; } /* Toss the items out */ void items_free(dialogMenuItem *list, int *curr, int *max) { int i; for (i = 0; list[i].prompt; i++) { safe_free(list[i].prompt); safe_free(list[i].title); } safe_free(list); *curr = *max = 0; } int Mkdir(char *ipath) { struct stat sb; int final; char *p, *path; if (file_readable(ipath) || Fake) return DITEM_SUCCESS; path = strcpy(alloca(strlen(ipath) + 1), ipath); if (isDebug()) msgDebug("mkdir(%s)\n", path); p = path; if (p[0] == '/') /* Skip leading '/'. */ ++p; for (final = FALSE; !final; ++p) { if (p[0] == '\0' || (p[0] == '/' && p[1] == '\0')) final = TRUE; else if (p[0] != '/') continue; *p = '\0'; if (stat(path, &sb)) { if (errno != ENOENT) { msgConfirm("Couldn't stat directory %s: %s", path, strerror(errno)); return DITEM_FAILURE; } if (isDebug()) msgDebug("mkdir(%s..)\n", path); if (mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO) < 0) { msgConfirm("Couldn't create directory %s: %s", path,strerror(errno)); return DITEM_FAILURE; } } *p = '/'; } return DITEM_SUCCESS; } int Mount(char *mountp, void *dev) { struct ufs_args ufsargs; char device[80]; char mountpoint[FILENAME_MAX]; if (Fake) return DITEM_SUCCESS; if (*((char *)dev) != '/') { sprintf(device, "%s/dev/%s", RunningAsInit ? "/mnt" : "", (char *)dev); sprintf(mountpoint, "%s%s", RunningAsInit ? "/mnt" : "", mountp); } else { strcpy(device, dev); strcpy(mountpoint, mountp); } memset(&ufsargs,0,sizeof ufsargs); if (Mkdir(mountpoint)) { msgConfirm("Unable to make directory mountpoint for %s!", mountpoint); return DITEM_FAILURE; } if (isDebug()) msgDebug("mount %s %s\n", device, mountpoint); ufsargs.fspec = device; if (mount(MOUNT_UFS, mountpoint, RunningAsInit ? MNT_ASYNC : 0, (caddr_t)&ufsargs) == -1) { msgConfirm("Error mounting %s on %s : %s", device, mountpoint, strerror(errno)); return DITEM_FAILURE; } return DITEM_SUCCESS; } WINDOW * openLayoutDialog(char *helpfile, char *title, int x, int y, int width, int height) { WINDOW *win; static char help[FILENAME_MAX]; /* We need a curses window */ win = newwin(LINES, COLS, 0, 0); if (win) { /* Say where our help comes from */ if (helpfile) { use_helpline("Press F1 for more information on this screen."); use_helpfile(systemHelpFile(helpfile, help)); } /* Setup a nice screen for us to splat stuff onto */ draw_box(win, y, x, height, width, dialog_attr, border_attr); wattrset(win, dialog_attr); mvwaddstr(win, y, x + (COLS - strlen(title)) / 2, title); } return win; } ComposeObj * initLayoutDialog(WINDOW *win, Layout *layout, int x, int y, int *max) { ComposeObj *obj = NULL, *first; int n; /* Loop over the layout list, create the objects, and add them onto the chain of objects that dialog uses for traversal*/ n = 0; while (layout[n].help != NULL) { int t = TYPE_OF_OBJ(layout[n].type); switch (t) { case STRINGOBJ: layout[n].obj = NewStringObj(win, layout[n].prompt, layout[n].var, layout[n].y + y, layout[n].x + x, layout[n].len, layout[n].maxlen); ((StringObj *)layout[n].obj)->attr_mask = ATTR_OF_OBJ(layout[n].type); break; case BUTTONOBJ: layout[n].obj = NewButtonObj(win, layout[n].prompt, layout[n].var, layout[n].y + y, layout[n].x + x); break; default: msgFatal("Don't support this object yet!"); } AddObj(&obj, t, (void *) layout[n].obj); n++; } *max = n - 1; /* Find the first object in the list */ for (first = obj; first->prev; first = first->prev); return first; } int layoutDialogLoop(WINDOW *win, Layout *layout, ComposeObj **obj, int *n, int max, int *cbutton, int *cancel) { char help_line[80]; int ret, i, len = strlen(layout[*n].help); /* Display the help line at the bottom of the screen */ for (i = 0; i < 79; i++) help_line[i] = (i < len) ? layout[*n].help[i] : ' '; help_line[i] = '\0'; use_helpline(help_line); display_helpline(win, LINES - 1, COLS - 1); wrefresh(win); /* Ask for libdialog to do its stuff */ ret = PollObj(obj); /* Handle special case stuff that libdialog misses. Sigh */ switch (ret) { case SEL_ESC: /* Bail out */ *cancel = TRUE; return FALSE; /* This doesn't work for list dialogs. Oh well. Perhaps should special case the move from the OK button ``up'' to make it go to the interface list, but then it gets awkward for the user to go back and correct screw up's in the per-interface section */ case KEY_DOWN: case SEL_CR: case SEL_TAB: if (*n < max) ++*n; else *n = 0; break; /* The user has pressed enter over a button object */ case SEL_BUTTON: if (cbutton && *cbutton) *cancel = TRUE; else *cancel = FALSE; return FALSE; case KEY_UP: case SEL_BACKTAB: if (*n) --*n; else *n = max; break; case KEY_F(1): display_helpfile(); /* They tried some key combination we don't support - tootle them forcefully! */ default: beep(); } return TRUE; } WINDOW * savescr(void) { WINDOW *w; w = dupwin(newscr); return w; } void restorescr(WINDOW *w) { touchwin(w); wrefresh(w); delwin(w); }