Adding upstream version 0.5.1upstream/0.5.1

1 files changed, 340 insertions, 0 deletions

diff --git a/w3mimgdisplay.c b/w3mimgdisplay.c
new file mode 100644
index 0000000..78550e5
--- /dev/null
+++ b/w3mimgdisplay.c
@@ -0,0 +1,340 @@
+/* $Id: w3mimgdisplay.c,v 1.18 2003/07/13 16:20:42 ukai Exp $ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "config.h"
+#include "w3mimg/w3mimg.h"
+
+w3mimg_op *w_op;
+static char *background = NULL;
+static int offset_x = 0, offset_y = 0;
+static int defined_bg = 0, defined_x = 0, defined_y = 0, defined_test = 0;
+static int defined_debug = 0;
+static char *defined_size = NULL;
+
+#define MAX_IMAGE 1000
+static W3MImage *imageBuf = NULL;
+static int maxImage = 0, maxAnim = 100, clearMargin = 0;
+
+static void GetOption(int argc, char **argv);
+static void DrawImage(char *buf, int redraw);
+static void TermImage(void);
+static void ClearImage(char *buf);
+
+int
+main(int argc, char **argv)
+{
+    int len;
+    char buf[1024 + 128];
+#ifdef W3MIMGDISPLAY_SETUID
+    uid_t runner_uid = getuid();
+    uid_t owner_uid = geteuid();
+
+    /* swap real and effective */
+    setreuid(owner_uid, runner_uid);
+#endif
+    GetOption(argc, argv);
+    if (!defined_debug)
+	freopen(DEV_NULL_PATH, "w", stderr);
+
+#ifdef W3MIMGDISPLAY_SETUID
+    /* 
+     * back real and effective
+     * run w3mimg_open() in setuid privileges
+     */
+    setreuid(runner_uid, owner_uid);
+#endif
+    w_op = w3mimg_open();
+#ifdef W3MIMGDISPLAY_SETUID
+    /* make sure drop privileges now */
+    setreuid(runner_uid, runner_uid);
+#endif
+    if (w_op == NULL)
+	exit(1);
+    if (defined_x)
+	w_op->offset_x = offset_x;
+    if (defined_y)
+	w_op->offset_y = offset_y;
+
+    w_op->max_anim = maxAnim;
+    w_op->clear_margin = clearMargin;
+
+    if (defined_test) {
+	printf("%d %d\n", w_op->width - w_op->offset_x,
+	       w_op->height - w_op->offset_y);
+	exit(0);
+    }
+
+    if (defined_size) {
+	if (w_op->init(w_op)) {
+	    W3MImage img;
+	    int w, h;
+	    if (w_op->get_image_size(w_op, &img, defined_size, &w, &h))
+		printf("%d %d\n", w, h);
+	}
+	exit(0);
+    }
+
+    w_op->set_background(w_op, background);
+
+    while (fgets(buf, sizeof(buf), stdin) != NULL) {
+	if (!(isdigit(buf[0]) && buf[1] == ';')) {
+	    fputc('\n', stdout);
+	    fflush(stdout);
+	    continue;
+	}
+	len = strlen(buf);
+	if (buf[len - 1] == '\n') {
+	    buf[--len] = '\0';
+	    if (buf[len - 1] == '\r')
+		buf[--len] = '\0';
+	}
+	/*
+	 * w3mimg protocol
+	 *  0  1  2 ....
+	 * +--+--+--+--+ ...... +--+--+
+	 * |op|; |args             |\n|
+	 * +--+--+--+--+ .......+--+--+
+	 *
+	 * args is separeted by ';'
+	 * op   args
+	 *  0;  params          draw image
+	 *  1;  params          redraw image
+	 *  2;  -none-          terminate drawing
+	 *  3;  -none-          sync drawing
+	 *  4;  -none-          nop, sync communication
+	 *                      response '\n'
+	 *  5;  path            get size of image,
+	 *                      response "<width> <height>\n"
+	 *  6;  params(6)       clear image
+	 *
+	 * params
+	 *      <n>;<x>;<y>;<w>;<h>;<sx>;<sy>;<sw>;<sh>;<path>
+	 * params(6)
+	 *      <x>;<y>;<w>;<h>
+	 *   
+	 */
+	switch (buf[0]) {
+	case '0':
+	    DrawImage(&buf[2], 0);
+	    break;
+	case '1':
+	    DrawImage(&buf[2], 1);
+	    break;
+	case '2':
+	    TermImage();
+	    break;
+	case '3':
+	    w_op->sync(w_op);
+	    break;
+	case '4':
+	    fputs("\n", stdout);
+	    fflush(stdout);
+	    break;
+	case '5':
+	    if (w_op->init(w_op)) {
+		W3MImage img;
+		int w, h;
+		if (w_op->get_image_size(w_op, &img, &buf[2], &w, &h)) {
+		    fprintf(stdout, "%d %d\n", w, h);
+		    fflush(stdout);
+		}
+		else {
+		    fprintf(stdout, "\n");
+		    fflush(stdout);
+		}
+	    }
+	    else {
+		fprintf(stdout, "\n");
+		fflush(stdout);
+	    }
+	    break;
+	case '6':
+	    ClearImage(&buf[2]);
+	    break;
+	}
+    }
+    TermImage();
+    w_op->close(w_op);
+    exit(0);
+}
+
+static void
+GetOption(int argc, char **argv)
+{
+    int i;
+
+    for (i = 1; i < argc; i++) {
+	if (!strcmp("-bg", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    background = argv[i];
+	    defined_bg = 1;
+	}
+	else if (!strcmp("-x", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    offset_x = atoi(argv[i]);
+	    defined_x = 1;
+	}
+	else if (!strcmp("-y", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    offset_y = atoi(argv[i]);
+	    defined_y = 1;
+	}
+	else if (!strcmp("-test", argv[i])) {
+	    defined_test = 1;
+	}
+	else if (!strcmp("-anim", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    maxAnim = atoi(argv[i]);
+	}
+	else if (!strcmp("-margin", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    clearMargin = atoi(argv[i]);
+	    if (clearMargin < 0)
+		clearMargin = 0;
+	}
+	else if (!strcmp("-size", argv[i])) {
+	    if (++i >= argc)
+		exit(1);
+	    defined_size = argv[i];
+	}
+	else if (!strcmp("-debug", argv[i])) {
+	    defined_debug = 1;
+	}
+	else {
+	    exit(1);
+	}
+    }
+}
+
+void
+DrawImage(char *buf, int redraw)
+{
+    char *p = buf;
+    int n = 0, x = 0, y = 0, w = 0, h = 0, sx = 0, sy = 0, sw = 0, sh = 0;
+
+    if (!p)
+	return;
+    for (; isdigit(*p); p++)
+	n = 10 * n + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	x = 10 * x + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	y = 10 * y + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	w = 10 * w + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	h = 10 * h + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	sx = 10 * sx + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	sy = 10 * sy + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	sw = 10 * sw + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	sh = 10 * sh + (*p - '0');
+    if (*(p++) != ';')
+	return;
+
+    n--;
+    if (n < 0 || n >= MAX_IMAGE)
+	return;
+    if (redraw) {
+	if (!w_op->active(w_op) || n >= maxImage || !imageBuf[n].pixmap)
+	    return;
+	goto draw_image;
+    }
+    w_op->init(w_op);
+
+    if (n >= maxImage) {
+	int i = maxImage;
+	maxImage = i ? (i * 2) : 2;
+	if (maxImage > MAX_IMAGE)
+	    maxImage = MAX_IMAGE;
+	else if (n >= maxImage)
+	    maxImage = n + 1;
+	imageBuf = (W3MImage *) realloc((void *)imageBuf,
+					sizeof(W3MImage) * maxImage);
+	for (; i < maxImage; i++)
+	    imageBuf[i].pixmap = NULL;
+    }
+    if (imageBuf[n].pixmap) {
+	w_op->free_image(w_op, &imageBuf[n]);
+	imageBuf[n].pixmap = NULL;
+    }
+
+    if (w_op->load_image(w_op, &imageBuf[n], p, w, h) == 0)
+	imageBuf[n].pixmap = NULL;
+
+  draw_image:
+    if (imageBuf[n].pixmap)
+	w_op->show_image(w_op, &imageBuf[n], sx, sy, sw, sh, x, y);
+}
+
+void
+TermImage(void)
+{
+    w_op->finish(w_op);
+    if (imageBuf) {
+	int i;
+	for (i = 0; i < maxImage; i++) {
+	    w_op->free_image(w_op, &imageBuf[i]);
+	}
+	free(imageBuf);
+	imageBuf = NULL;
+    }
+    maxImage = 0;
+}
+
+void
+ClearImage(char *buf)
+{
+    char *p = buf;
+    int x = 0, y = 0, w = 0, h = 0;
+
+    if (!p)
+	return;
+    for (; isdigit(*p); p++)
+	x = 10 * x + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	y = 10 * y + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	w = 10 * w + (*p - '0');
+    if (*(p++) != ';')
+	return;
+    for (; isdigit(*p); p++)
+	h = 10 * h + (*p - '0');
+
+    w_op->clear(w_op,
+		x + offset_x - w_op->clear_margin,
+		y + offset_y - w_op->clear_margin,
+		w + w_op->clear_margin * 2, h + w_op->clear_margin * 2);
+}