x11-ssh-askpass-1.2.4.1.tar.gz

/* x11-ssh-askpass.c: A generic X11-based password dialog for OpenSSH. * created 1999-Nov-17 03:40 Jim Knoble <jmknoble@pobox.com> * autodate: 2001-Sep-16 18:08 * * by Jim Knoble <jmknoble@pobox.com> * Copyright (C) 1999,2000,2001 Jim Knoble * * Disclaimer: * * The software is provided "as is", without warranty of any kind, * express or implied, including but not limited to the warranties of * merchantability, fitness for a particular purpose and * noninfringement. In no event shall the author(s) be liable for any * claim, damages or other liability, whether in an action of * contract, tort or otherwise, arising from, out of or in connection * with the software or the use or other dealings in the software. * * Portions of this code are distantly derived from code in xscreensaver * by Jamie Zawinski <jwz@jwz.org>. That code says: * * --------8<------------------------------------------------8<-------- * xscreensaver, Copyright (c) 1991-1999 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. * --------8<------------------------------------------------8<-------- * * The remainder of this code falls under the same permissions and * provisions as those of the xscreensaver code. */ #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> /* For (get|set)rlimit() ... */ #include <sys/time.h> #include <sys/resource.h> /* ... end */ /* For (get|set)rlimit(), sleep(), and getpid() ... */ #include <unistd.h> /* ... end */ /* For errno ... */ #include <errno.h> /* ... end */ #include <X11/Xlib.h> #include <X11/Intrinsic.h> #include <X11/Shell.h> #include <X11/Xos.h> #include "dynlist.h" #include "drawing.h" #include "resources.h" #include "x11-ssh-askpass.h" #undef MAX #define MAX(a,b) (((a) > (b)) ? (a) : (b)) char *progname = NULL; char *progclass = NULL; XrmDatabase db = 0; static char *defaults[] = { #include "SshAskpass_ad.h" 0 }; void outOfMemory(AppInfo *app, int line) { fprintf(stderr, "%s[%ld]: Aaahhh! I ran out of memory at line %d.\n", app->appName, (long) app->pid, line); exit(EXIT_STATUS_NO_MEMORY); } void freeIf(void *p) { if (p) { free(p); } } void freeFontIf(AppInfo *app, XFontStruct *f) { if (f) { XFreeFont(app->dpy, f); } } XFontStruct *getFontResource(AppInfo *app, char *instanceName, char *className) { char *fallbackFont = "fixed"; XFontStruct *f = NULL; char *s = get_string_resource(instanceName, className); f = XLoadQueryFont(app->dpy, (s ? s : fallbackFont)); if (!f) { f = XLoadQueryFont(app->dpy, fallbackFont); } if (s) { free(s); } return(f); } char *getStringResourceWithDefault(char *instanceName, char *className, char *defaultText) { char *s = get_string_resource(instanceName, className); if (!s) { if (!defaultText) { s = strdup(""); } else { s = strdup(defaultText); } } return(s); } unsigned int getUnsignedIntegerResource(AppInfo *app, char *instanceName, char *className, unsigned int defaultValue) { int n; unsigned int value; char c; char *s = get_string_resource(instanceName, className); char *cp = s; if (NULL == s) { return(defaultValue); } while ((*cp) && isspace(*cp)) { /* Skip whitespace. */ cp++; } if (*cp) { if (('0' == cp[0]) && cp[1]) { if (('x' == cp[1]) || ('X' == cp[1])) { /* Hex */ n = sscanf(cp + 2, "%x %c", &value, &c); } else { /* Octal */ n = sscanf(cp + 1, "%o %c", &value, &c); } if (1 == n) { free(s); return(value); } } else { /* Unsigned Decimal */ n = sscanf(cp, "%u %c", &value, &c); if (1 == n) { free(s); return(value); } } } /* If we get here, no conversion succeeded. */ fprintf(stderr, "%s[%ld]: invalid value '%s' for %s.\n", app->appName, (long) app->pid, s, instanceName); free(s); return(defaultValue); } /* Default resolution is 75 dots/inch. 1 in = 2.54 cm. */ #define DefaultResolution ((75 * 10000) / 254) long getResolutionResource(AppInfo *app, char *instanceName, char *className, char *defaultResolutionSpec) { char units[3]; char *s; int n; long resolution; unsigned int i; memset(units, 0, sizeof(units)); s = getStringResourceWithDefault(instanceName, className, defaultResolutionSpec); /* NOTE: The width of the %s format must be one less than * the length of the units[] array above! */ n = sscanf(s, "%ld / %2s", &resolution, units); if (n != 2) { fprintf(stderr, "%s[%ld]: invalid value '%s' for %s.\n", app->appName, (long) app->pid, s, instanceName); resolution = DefaultResolution; } else { if (resolution < 0) { /* Resolution specifications should not be negative. */ resolution = -(resolution); } for (i = 0; i < (sizeof(units) - 1); i++) { units[i] = tolower(units[i]); } if ((0 == strcmp(units, "in")) || (0 == strcmp(units, "i")) || (0 == strcmp(units, "\""))) { /* dots/inch */ resolution = resolution * 10000 / 254; } else if ((0 == strcmp(units, "m")) || (0 == strcmp(units, "me"))) { /* dots/meter; no conversion necessary */ ; } else { /* some unit we don't recognize; cringe and stare at the floor */ resolution = DefaultResolution; } } return(resolution); } #undef DefaultResolution void calcTextObjectExtents(TextObject *t, XFontStruct *font) { if ((!t) || (!(t->text))) { return; } t->textLength = strlen(t->text); XTextExtents(font, t->text, t->textLength, &(t->direction), &(t->ascent), &(t->descent), &(t->overall)); } void calcLabelTextExtents(LabelInfo *label) { TextObject *t; if ((!label) || (!(label->fullText)) || (!(label->font))) { return; } t = label->multiText; while (NULL != t) { calcTextObjectExtents(t, label->font); label->w.height += (t->ascent + t->descent); if (label->w.width < t->overall.width) { label->w.width = t->overall.width; } t = t->next; } } void calcTotalButtonExtents(ButtonInfo *button) { if (!button) { return; } button->w3.w.width = (button->w3.interiorWidth + (2 * button->w3.shadowThickness)); button->w3.w.width += (2 * button->w3.borderWidth); button->w3.w.height = (button->w3.interiorHeight + (2 * button->w3.shadowThickness)); button->w3.w.height += (2 * button->w3.borderWidth); } void calcButtonExtents(ButtonInfo *button) { if (!button) { return; } calcLabelTextExtents(&(button->label)); button->w3.interiorWidth = (button->label.w.width + (2 * button->w3.horizontalSpacing)); button->w3.interiorHeight = (button->label.w.height + (2 * button->w3.verticalSpacing)); calcTotalButtonExtents(button); } void balanceButtonExtents(ButtonInfo *button1, ButtonInfo *button2) { if ((!button1) || (!button2)) { return; } button1->w3.interiorWidth = button2->w3.interiorWidth = MAX(button1->w3.interiorWidth, button2->w3.interiorWidth); button1->w3.interiorHeight = button2->w3.interiorHeight = MAX(button1->w3.interiorHeight, button2->w3.interiorHeight); calcTotalButtonExtents(button1); calcTotalButtonExtents(button2); } void calcButtonLabelPosition(ButtonInfo *button) { if (!button) { return; } button->label.w.x = button->w3.w.x + ((button->w3.w.width - button->label.w.width) / 2); button->label.w.y = button->w3.w.y + ((button->w3.w.he