Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 5b34c1080dbe69f2bcc30e52f2858fa1c0cf0614 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

/* Eclipse Mozilla Utility Methods */

#ifdef MOZILLA_FIX

#include "eclipseMozilla.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>


/* Filter function used by fixEnvForMozilla() for finding directories
 * with a desired prefix.
 */
int filter(const struct dirent *dir)
{
	char* prefixes[] = {
		"xulrunner-",
		"mozilla-seamonkey-",
		"mozilla-",
		"firefox-",
		NULL
	};
	int XULRUNNER_INDEX = 0;
#if defined(__amd64__) || defined(__x86_64__) || defined(__powerpc64__)
	char* root = "/usr/lib64/";
#else
	char* root = "/usr/lib/";
#endif
	char* testlib = "/components/libwidget_gtk2.so";
	struct stat buf;
	int index = 0;
	char* dirname = (char *)dir->d_name;

	char* prefix = prefixes [index];
	while (prefix != NULL)
	{
		if (strncmp(dirname, prefix, strlen(prefix)) == 0)
		{
			/* If a xulrunner install is found then success is immediate since
			 * xulrunner always provides an embeddable GRE.
			 */
			if (index == XULRUNNER_INDEX) return 1;	/* include in scandir result */
			char* testpath = malloc (strlen(root) + strlen(dirname) + strlen(testlib) + 1);
			strcpy(testpath, root);
			strcat(testpath, dirname);
			strcat(testpath, testlib);
			int success = stat(testpath, &buf) == 0;
			free(testpath);
			if (success)
			{
				return 1;	/* include in scandir result */
			}
		}
		prefix = prefixes [++index];
	}
	return 0;	/* exclude from scandir result */
}

/* Set the environmnent required by the SWT Browser widget to bind to Mozilla. 
 * The SWT Browser widget relies on Mozilla on Linux. The LD_LIBRARY_PATH
 * and the Mozilla environment variable MOZILLA_FIVE_HOME must point
 * to the installation directory of Mozilla.
 * 
 * 1. Use the location set by MOZILLA_FIVE_HOME if it is defined
 * 2. Parse the file /etc/gre.conf if it is defined. This file is
 *    set by the RedtHat RPM manager.
 * 3. Try some common installation locations.
 */
void fixEnvForMozilla() {
	static int fixed = 0;
	if (fixed) return; 
	{
		char *ldPath = (char*)getenv("LD_LIBRARY_PATH");
		char *mozillaFiveHome = (char*)getenv("MOZILLA_FIVE_HOME");
		char *grePath = NULL; /* Gecko Runtime Environment Location */
		fixed = 1;
		/* Always dup the string so we can free later */
		if (ldPath != NULL) ldPath = strdup(ldPath);
		else ldPath = strdup("");
		
		/* MOZILLA_FIVE_HOME (if defined) points to the Mozilla
		 * install directory. Don't look any further if it is set.
		 */
		if (mozillaFiveHome != NULL) 
		{
			grePath = strdup(mozillaFiveHome);
		}

		/* The file gre.conf (if available) points to the
		 * Mozilla install directory. Don't look any further if 
		 * it is set.
		 */
		if (grePath == NULL)
		{
			struct stat buf;
			FILE *file = NULL;
#if defined(__amd64__) || defined(__x86_64__) || defined(__powerpc64__)
			if (stat("/etc/gre64.conf", &buf) == 0)
			{
				file = fopen("/etc/gre64.conf", "r");
			}
			else if (stat("/etc/gre.d/gre64.conf", &buf) == 0)
			{
				file = fopen("/etc/gre.d/gre64.conf", "r");
			} else
#endif
			if (stat("/etc/gre.conf", &buf) == 0)
			{
				file = fopen("/etc/gre.conf", "r");
			}
			else if (stat("/etc/gre.d/gre.conf", &buf) == 0)
			{
				file = fopen("/etc/gre.d/gre.conf", "r");
			}
			if (file != NULL)
			{
				char buffer[1024];
				char path[1024];
				while (fgets(buffer, 1024, file) != NULL)
				{
					if (sscanf(buffer, "GRE_PATH=%s", path) == 1)
					{
						grePath = strdup(path);
						break;
					}
				}
				fclose(file);
			}
		}

		/* Try some common installation locations. */
		if (grePath == NULL)
		{
			/* try xulrunner-*, mozilla-*, firefox-* directories in /usr/lib/ */
#if defined(__amd64__) || defined(__x86_64__) || defined(__powerpc64__)
			char* dir = "/usr/lib64/";
#else
			char* dir = "/usr/lib/";
#endif
			struct dirent **namelist;
			int i;
			int count = scandir(dir, &namelist, filter, alphasort);
			if (count > 0)
			{
				/* count-1 is used below in an attempt to get the matched directory
				 * with the latest version number.
				 */
				char* name = namelist [count - 1]->d_name;
				grePath = malloc (strlen(dir) + strlen(name) + 1);
				strcpy(grePath, dir);
				strcat(grePath, name);
				for (i = 0; i < count; i++) {
					free(namelist [i]);
				}
				free(namelist);
			}

			if (grePath == NULL)
			{
				/* some other typical installation locations */
				char* dirs[] = {
#if defined(__amd64__) || defined(__x86_64__) || defined(__powerpc64__)
					"/usr/lib64/xulrunner/",
					"/usr/lib64/seamonkey/",
					"/usr/lib64/mozilla/",
					"/usr/lib64/firefox/",
#endif
					"/usr/lib/xulrunner/",
					"/usr/lib/seamonkey/",
					"/usr/lib/mozilla/",
					"/usr/lib/firefox/",
					"/usr/local/xulrunner/",
					"/opt/xulrunner/",
					"/usr/local/seamonkey/",
					"/opt/seamonkey/",
					"/usr/local/mozilla/",
					"/opt/mozilla/",
					"/usr/local/firefox/",
					"/opt/firefox/",
					NULL
				};
				char* testlib = "components/libwidget_gtk2.so";
				struct stat buf;
				int index = 0;

				char* dir = dirs [index++];
				while (dir != NULL)
				{
					char* testpath = malloc (strlen(dir) + strlen(testlib) + 1);
					strcpy(testpath, dir);
					strcat(testpath, testlib);
					int success = stat(testpath, &buf) == 0;
					free(testpath);
					if (success)
					{
						grePath = strdup(dir);
						break;
					}
					dir = dirs [index++];
				}
			}
		}

		if (grePath != NULL)
		{
			ldPath = (char*)realloc(ldPath, strlen(ldPath) + strlen(grePath) + 2);
			if (strlen(ldPath) > 0) strcat(ldPath, ":");
			strcat(ldPath, grePath);
			setenv("LD_LIBRARY_PATH", ldPath, 1);
			
			if (mozillaFiveHome == NULL) setenv("MOZILLA_FIVE_HOME", grePath, 1);
			free(grePath);
		}
		free(ldPath);
	}
}
#endif /* MOZILLA_FIX */

Back to the top