+++ /dev/null
-/* dotfile.c --- management of the ~/.xscreensaver file.
- * xscreensaver, Copyright (c) 1998 Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <X11/Xlib.h>
-#include <X11/Xresource.h>
-
-#ifndef VMS
-# include <pwd.h>
-#else /* VMS */
-# include "vms-pwd.h"
-#endif /* VMS */
-
-
-/* This file doesn't need the Xt headers, so stub these types out... */
-#undef XtPointer
-#define XtAppContext void*
-#define XtIntervalId void*
-#define XtPointer void*
-#define Widget void*
-
-#include "xscreensaver.h"
-#include "resources.h"
-
-/* Just in case there's something pathological about stat.h... */
-#ifndef S_IRUSR
-# define S_IRUSR 00400
-#endif
-#ifndef S_IWUSR
-# define S_IWUSR 00200
-#endif
-#ifndef S_IXUSR
-# define S_IXUSR 00100
-#endif
-#ifndef S_IXGRP
-# define S_IXGRP 00010
-#endif
-#ifndef S_IXOTH
-# define S_IXOTH 00001
-#endif
-
-
-static const char *
-init_file_name (void)
-{
- static char *file = 0;
-
- if (!file)
- {
- struct passwd *p = getpwuid (getuid ());
-
- if (!p || !p->pw_name || !*p->pw_name)
- {
- fprintf (stderr, "%s: couldn't get user info of uid %d\n",
- blurb(), getuid ());
- file = "";
- }
- else if (!p->pw_dir || !*p->pw_dir)
- {
- fprintf (stderr, "%s: couldn't get home directory of %s\n",
- blurb(), (p->pw_name ? p->pw_name : "???"));
- file = "";
- }
- else
- {
- const char *home = p->pw_dir;
- const char *name = ".xscreensaver";
- file = (char *) malloc(strlen(home) + strlen(name) + 2);
- strcpy(file, home);
- if (!*home || home[strlen(home)-1] != '/')
- strcat(file, "/");
- strcat(file, name);
- }
- }
-
- if (file && *file)
- return file;
- else
- return 0;
-}
-
-
-static const char *
-init_file_tmp_name (void)
-{
- static char *file = 0;
- if (!file)
- {
- const char *name = init_file_name();
- const char *suffix = ".tmp";
- if (!name || !*name)
- file = "";
- else
- {
- file = (char *) malloc(strlen(name) + strlen(suffix) + 2);
- strcpy(file, name);
- strcat(file, suffix);
- }
- }
-
- if (file && *file)
- return file;
- else
- return 0;
-}
-
-
-static const char * const prefs[] = {
- "timeout",
- "cycle",
- "lock",
- "lockVTs",
- "lockTimeout",
- "passwdTimeout",
- "visualID",
- "installColormap",
- "verbose",
- "timestamp",
- "splash", /* not saved -- same as "splashDuration: 0" */
- "splashDuration",
- "helpURL",
- "loadURL",
- "nice",
- "fade",
- "unfade",
- "fadeSeconds",
- "fadeTicks",
- "captureStderr",
- "captureStdout", /* not saved -- obsolete */
- "font",
- "",
- "programs",
- "",
- "pointerPollTime",
- "windowCreationTimeout",
- "initialDelay",
- "sgiSaverExtension",
- "mitSaverExtension",
- "xidleExtension",
- "overlayStderr",
- "overlayTextBackground", /* not saved -- X resources only */
- "overlayTextForeground", /* not saved -- X resources only */
- "bourneShell", /* not saved -- X resources only */
- 0
-};
-
-static char *strip(char *s)
-{
- char *s2;
- while (*s == '\t' || *s == ' ' || *s == '\r' || *s == '\n')
- s++;
- for (s2 = s; *s2; s2++)
- ;
- for (s2--; s2 >= s; s2--)
- if (*s2 == '\t' || *s2 == ' ' || *s2 == '\r' || *s2 =='\n')
- *s2 = 0;
- else
- break;
- return s;
-}
-
-\f
-/* Reading
- */
-
-static int
-handle_entry (saver_info *si, const char *key, const char *value,
- const char *filename, int line)
-{
- int i;
- for (i = 0; prefs[i]; i++)
- if (*prefs[i] && !strcasecmp(key, prefs[i]))
- {
- char *val = strdup(value);
- char *spec = (char *) malloc(strlen(progclass) + strlen(prefs[i]) +10);
- strcpy(spec, progclass);
- strcat(spec, ".");
- strcat(spec, prefs[i]);
-
- XrmPutStringResource (&si->db, spec, val);
-
- free(spec);
- free(val);
- return 0;
- }
-
- fprintf(stderr, "%s: %s:%d: unknown option \"%s\"\n",
- blurb(), filename, line, key);
- return 1;
-}
-
-int
-read_init_file (saver_info *si)
-{
- time_t write_date = 0;
- const char *name = init_file_name();
- int line = 0;
- struct stat st;
- FILE *in;
- int buf_size = 1024;
- char *buf;
-
- if (!name) return 0;
-
- if (stat(name, &st) != 0)
- {
- si->init_file_date = 0;
- return 0;
- }
-
- in = fopen(name, "r");
- if (!in)
- {
- char *buf = (char *) malloc(1024 + strlen(name));
- sprintf(buf, "%s: error reading %s", blurb(), name);
- perror(buf);
- free(buf);
- return -1;
- }
-
- if (fstat (fileno(in), &st) == 0)
- {
- write_date = st.st_mtime;
- }
- else
- {
- char *buf = (char *) malloc(1024 + strlen(name));
- sprintf(buf, "%s: couldn't re-stat %s", blurb(), name);
- perror(buf);
- free(buf);
- return -1;
- }
-
- buf = (char *) malloc(buf_size);
-
- while (fgets (buf, buf_size-1, in))
- {
- char *key, *value;
- int L = strlen(buf);
-
- line++;
- while (L > 2 &&
- (buf[L-1] != '\n' || /* whole line didn't fit in buffer */
- buf[L-2] == '\\')) /* or line ended with backslash */
- {
- if (buf[L-2] == '\\') /* backslash-newline gets swallowed */
- {
- buf[L-2] = 0;
- L -= 2;
- }
- buf_size += 1024;
- buf = (char *) realloc(buf, buf_size);
- if (!buf) exit(1);
-
- line++;
- if (!fgets (buf + L, buf_size-L-1, in))
- break;
- L = strlen(buf);
- }
-
- /* Now handle other backslash escapes. */
- {
- int i, j;
- for (i = 0; buf[i]; i++)
- if (buf[i] == '\\')
- {
- switch (buf[i+1])
- {
- case 'n': buf[i] = '\n'; break;
- case 'r': buf[i] = '\r'; break;
- case 't': buf[i] = '\t'; break;
- default: buf[i] = buf[i+1]; break;
- }
- for (j = i+2; buf[j]; j++)
- buf[j-1] = buf[j];
- buf[j-1] = 0;
- }
- }
-
- key = strip(buf);
-
- if (*key == '#' || *key == '!' || *key == ';' ||
- *key == '\n' || *key == 0)
- continue;
-
- value = strchr (key, ':');
- if (!value)
- {
- fprintf(stderr, "%s: %s:%d: unparsable line: %s\n", blurb(),
- name, line, key);
- continue;
- }
- else
- {
- *value++ = 0;
- value = strip(value);
- }
-
- handle_entry (si, key, value, name, line);
- }
- free(buf);
-
- si->init_file_date = write_date;
- return 0;
-}
-
-
-int
-maybe_reload_init_file (saver_info *si)
-{
- saver_preferences *p = &si->prefs;
- const char *name = init_file_name();
- struct stat st;
- int status = 0;
-
- if (!name) return 0;
-
- if (stat(name, &st) != 0)
- return 0;
-
- if (si->init_file_date == st.st_mtime)
- return 0;
-
- if (p->verbose_p)
- fprintf (stderr, "%s: file %s has changed, reloading.\n", blurb(), name);
-
- status = read_init_file (si);
- if (status == 0)
- get_resources (si);
- return status;
-}
-
-\f
-/* Writing
- */
-
-static int
-tab_to (FILE *out, int from, int to)
-{
- int tab_width = 8;
- int to_mod = (to / tab_width) * tab_width;
- while (from < to_mod)
- {
- fprintf(out, "\t");
- from = (((from / tab_width) + 1) * tab_width);
- }
- while (from < to)
- {
- fprintf(out, " ");
- from++;
- }
- return from;
-}
-
-static void
-write_entry (FILE *out, const char *key, const char *value)
-{
- char *v = strdup(value ? value : "");
- char *v2 = v;
- char *nl = 0;
- int col;
- Bool do_visual_kludge = (!strcmp(key, "programs"));
- Bool do_wrap = do_visual_kludge;
- int tab = (do_visual_kludge ? 16 : 23);
- int tab2 = 3;
- Bool first = True;
-
- fprintf(out, "%s:", key);
- col = strlen(key) + 1;
-
- while (1)
- {
- char *s;
- if (first)
- first = False;
- else
- {
- col = tab_to(out, col, 75);
- fprintf(out, " \\n\\\n");
- col = 0;
- }
-
- v2 = strip(v2);
- nl = strchr(v2, '\n');
- if (nl)
- *nl = 0;
-
- s = (do_visual_kludge ? strpbrk(v2, " \t\n:") : 0);
- if (s && *s == ':')
- col = tab_to (out, col, tab2);
- else
- col = tab_to (out, col, tab);
-
- if (do_wrap &&
- strlen(v2) + col > 75)
- {
- int L = strlen(v2);
- int start = 0;
- int end = start;
- while (start < L)
- {
- while (v2[end] == ' ' || v2[end] == '\t')
- end++;
- while (v2[end] != ' ' && v2[end] != '\t' &&
- v2[end] != '\n' && v2[end] != 0)
- end++;
- if (col + (end - start) >= 74)
- {
- col = tab_to (out, col, 75);
- fprintf(out, " \\\n");
- col = tab_to (out, 0, tab + 2);
- while (v2[start] == ' ' || v2[start] == '\t')
- start++;
- }
-
- while (start < end)
- {
- fputc(v2[start++], out);
- col++;
- }
- }
- }
- else
- {
- fprintf (out, "%s", v2);
- col += strlen(v2);
- }
-
- if (nl)
- v2 = nl + 1;
- else
- break;
- }
-
- fprintf(out, "\n");
- free(v);
-}
-
-int
-write_init_file (saver_info *si)
-{
- const char *name = init_file_name();
- const char *tmp_name = init_file_tmp_name();
- struct stat st;
- saver_preferences *p = &si->prefs;
- int i, j;
-
- /* Kludge, since these aren't in the saver_preferences struct as strings...
- */
- char *visual_name;
- char *programs;
- Bool capture_stderr_p;
- Bool overlay_stderr_p;
- char *stderr_font;
- FILE *out;
-
- if (!name) return 0;
-
- if (si->dangerous_uid_p)
- {
- if (p->verbose_p)
- {
- fprintf (stderr, "%s: not writing \"%s\":\n", blurb(), name);
- describe_uids (si, stderr);
- }
- return 0;
- }
-
- if (p->verbose_p)
- fprintf (stderr, "%s: writing \"%s\".\n", blurb(), name);
-
- unlink (tmp_name);
- out = fopen(tmp_name, "w");
- if (!out)
- {
- char *buf = (char *) malloc(1024 + strlen(name));
- sprintf(buf, "%s: error writing %s", blurb(), name);
- perror(buf);
- free(buf);
- return -1;
- }
-
- /* Give the new .xscreensaver file the same permissions as the old one;
- except ensure that it is readable and writable by owner, and not
- executable.
- */
- if (stat(name, &st) == 0)
- {
- mode_t mode = st.st_mode;
- mode |= S_IRUSR | S_IWUSR;
- mode &= ~(S_IXUSR | S_IXGRP | S_IXOTH);
- if (fchmod (fileno(out), mode) != 0)
- {
- char *buf = (char *) malloc(1024 + strlen(name));
- sprintf (buf, "%s: error fchmodding %s to 0%o", blurb(),
- tmp_name, (unsigned int) mode);
- perror(buf);
- free(buf);
- return -1;
- }
- }
-
- /* Kludge, since these aren't in the saver_preferences struct... */
- visual_name = get_string_resource ("visualID", "VisualID");
- programs = 0;
- capture_stderr_p = get_boolean_resource ("captureStderr", "Boolean");
- overlay_stderr_p = get_boolean_resource ("overlayStderr", "Boolean");
- stderr_font = get_string_resource ("font", "Font");
-
- i = 0;
- for (j = 0; j < p->screenhacks_count; j++)
- i += strlen(p->screenhacks[j]) + 2;
- {
- char *ss = programs = (char *) malloc(i + 10);
- *ss = 0;
- for (j = 0; j < p->screenhacks_count; j++)
- {
- strcat(ss, p->screenhacks[j]);
- ss += strlen(ss);
- *ss++ = '\n';
- *ss = 0;
- }
- }
-
- {
- struct passwd *p = getpwuid (getuid ());
- char *whoami = (p && p->pw_name && *p->pw_name
- ? p->pw_name : "<unknown>");
- fprintf (out,
- "# %s Preferences File\n"
- "# Written by %s %s for %s on %s.\n"
- "# http://www.jwz.org/xscreensaver/\n"
- "\n",
- progclass, progname, si->version,
- (whoami ? whoami : "<unknown>"),
- timestring());
- }
-
- for (j = 0; prefs[j]; j++)
- {
- char buf[255];
- const char *pr = prefs[j];
- enum pref_type { pref_str, pref_int, pref_bool, pref_time
- } type = pref_str;
- const char *s = 0;
- int i = 0;
- Bool b = False;
- Time t = 0;
-
- if (pr && !*pr)
- {
- fprintf(out, "\n");
- continue;
- }
-
-# undef CHECK
-# define CHECK(X) else if (!strcmp(pr, X))
- if (!pr || !*pr) ;
- CHECK("timeout") type = pref_time, t = p->timeout;
- CHECK("cycle") type = pref_time, t = p->cycle;
- CHECK("lock") type = pref_bool, b = p->lock_p;
-# if 0 /* #### not ready yet */
- CHECK("lockVTs") type = pref_bool, b = p->lock_vt_p;
-# else
- CHECK("lockVTs") continue; /* don't save */
-# endif
- CHECK("lockTimeout") type = pref_time, t = p->lock_timeout;
- CHECK("passwdTimeout") type = pref_time, t = p->passwd_timeout;
- CHECK("visualID") type = pref_str, s = visual_name;
- CHECK("installColormap") type = pref_bool, b = p->install_cmap_p;
- CHECK("verbose") type = pref_bool, b = p->verbose_p;
- CHECK("timestamp") type = pref_bool, b = p->timestamp_p;
- CHECK("splash") continue; /* don't save */
- CHECK("splashDuration") type = pref_time, t = p->splash_duration;
- CHECK("helpURL") type = pref_str, s = p->help_url;
- CHECK("loadURL") type = pref_str, s = p->load_url_command;
- CHECK("nice") type = pref_int, i = p->nice_inferior;
- CHECK("fade") type = pref_bool, b = p->fade_p;
- CHECK("unfade") type = pref_bool, b = p->unfade_p;
- CHECK("fadeSeconds") type = pref_time, t = p->fade_seconds;
- CHECK("fadeTicks") type = pref_int, i = p->fade_ticks;
- CHECK("captureStderr") type = pref_bool, b = capture_stderr_p;
- CHECK("captureStdout") continue; /* don't save */
- CHECK("font") type = pref_str, s = stderr_font;
- CHECK("programs") type = pref_str, s = programs;
- CHECK("pointerPollTime") type = pref_time, t = p->pointer_timeout;
- CHECK("windowCreationTimeout")type=pref_time,t= p->notice_events_timeout;
- CHECK("initialDelay") type = pref_time, t = p->initial_delay;
- CHECK("sgiSaverExtension")type = pref_bool, b=p->use_sgi_saver_extension;
- CHECK("mitSaverExtension")type = pref_bool, b=p->use_mit_saver_extension;
- CHECK("xidleExtension") type = pref_bool, b = p->use_xidle_extension;
- CHECK("overlayStderr") type = pref_bool, b = overlay_stderr_p;
- CHECK("overlayTextBackground") continue; /* don't save */
- CHECK("overlayTextForeground") continue; /* don't save */
- CHECK("bourneShell") continue;
- else abort();
-# undef CHECK
-
- switch (type)
- {
- case pref_str:
- break;
- case pref_int:
- sprintf(buf, "%d", i);
- s = buf;
- break;
- case pref_bool:
- s = b ? "True" : "False";
- break;
- case pref_time:
- {
- unsigned int hour = 0, min = 0, sec = (unsigned int) (t/1000);
- if (sec >= 60)
- {
- min += (sec / 60);
- sec %= 60;
- }
- if (min >= 60)
- {
- hour += (min / 60);
- min %= 60;
- }
- sprintf (buf, "%u:%02u:%02u", hour, min, sec);
- s = buf;
- }
- break;
- default:
- abort();
- break;
- }
- write_entry (out, pr, s);
- }
-
- fprintf(out, "\n");
-
- if (visual_name) free(visual_name);
- if (stderr_font) free(stderr_font);
- if (programs) free(programs);
-
- if (fclose(out) == 0)
- {
- time_t write_date = 0;
-
- if (stat(tmp_name, &st) == 0)
- {
- write_date = st.st_mtime;
- }
- else
- {
- char *buf = (char *) malloc(1024 + strlen(tmp_name) + strlen(name));
- sprintf(buf, "%s: couldn't stat %s", blurb(), tmp_name);
- perror(buf);
- unlink (tmp_name);
- free(buf);
- return -1;
- }
-
- if (rename (tmp_name, name) != 0)
- {
- char *buf = (char *) malloc(1024 + strlen(tmp_name) + strlen(name));
- sprintf(buf, "%s: error renaming %s to %s", blurb(), tmp_name, name);
- perror(buf);
- unlink (tmp_name);
- free(buf);
- return -1;
- }
- else
- {
- si->init_file_date = write_date;
- }
- }
- else
- {
- char *buf = (char *) malloc(1024 + strlen(name));
- sprintf(buf, "%s: error closing %s", blurb(), name);
- perror(buf);
- free(buf);
- unlink (tmp_name);
- return -1;
- }
-
- return 0;
-}
projects / xscreensaver / blobdiff