bool GetJREPathFromEnvVars(char* path, size_t pathSize, const char* arch)
{
bool found = false;
static const size_t possLoc_sizeMax = 32;
char* possLoc[possLoc_sizeMax];
size_t possLoc_i = 0;
possLoc[possLoc_i++] = util_allocStrCpy("JAVA_HOME");
possLoc[possLoc_i++] = util_allocStrCpy("JDK_HOME");
possLoc[possLoc_i++] = util_allocStrCpy("JRE_HOME");
size_t l;
for (l=0; l < possLoc_i; ++l) {
const char* envPath = getenv(possLoc[l]);
if (envPath != NULL) {
found = GetJREPathFromBase(path, pathSize, envPath, arch);
if (found) {
simpleLog_logL(LOG_LEVEL_NOTICE, "JRE found in env var \"%s\"!", possLoc[l]);
goto locSearchEnd;
}
}
}
locSearchEnd:
// cleanup
for (l=0; l < possLoc_i; ++l) {
free(possLoc[l]);
possLoc[l] = NULL;
}
return found;
}
static bool GetJREPathWhichJava(char* path, size_t pathSize, const char* arch)
{
static const char* suf = "/bin/java";
const size_t suf_size = strlen(suf);
bool found = false;
// execute
FILE* cmd_fp = popen("which java | sed 's/[\\n\\r]/K/g'", "r");
if (cmd_fp == NULL) {
return found;
}
// parse results
static const size_t line_sizeMax = 512;
char line[line_sizeMax];
if (fgets(line, line_sizeMax, cmd_fp)) {
if (*line == '/') { // -> absolute path
size_t line_size = strlen(line);
if (*(line+line_size-1) == '\n') {
// remove trailing '\n'
*(line+line_size-1) = '\0';
line_size--;
}
simpleLog_logL(SIMPLELOG_LEVEL_FINEST,
"which line \"%s\"!", line);
if (line_size > suf_size
&& strcmp(line+(line_size-suf_size), suf) == 0) {
// line ends with suf
simpleLog_logL(SIMPLELOG_LEVEL_FINER,
"JRE found with `which java`!");
// remove suf
*(line+(line_size-suf_size)) = '\0';
found = GetJREPathFromBase(path, pathSize, line, arch);
}
}
}
pclose(cmd_fp);
return found;
}
static bool GetJREPathInCommonLocations(char* path, size_t pathSize, const char* arch)
{
bool found = false;
static const size_t possLoc_sizeMax = 32;
char* possLoc[possLoc_sizeMax];
size_t possLoc_i = 0;
possLoc[possLoc_i++] = util_allocStrCpy("/usr/local/jdk*");
possLoc[possLoc_i++] = util_allocStrCpy("/usr/lib/jvm/java-?-sun");
possLoc[possLoc_i++] = util_allocStrCpy("/usr/lib/jvm/java-?-*");
possLoc[possLoc_i++] = util_allocStrCpy("~/jdk*");
possLoc[possLoc_i++] = util_allocStrCpy("~/bin/jdk*");
possLoc[possLoc_i++] = util_allocStrCpy("~/jre*");
possLoc[possLoc_i++] = util_allocStrCpy("~/bin/jre*");
static const size_t globHits_sizeMax = 32;
char* globHits[globHits_sizeMax];
size_t l, g;
for (l=0; l < possLoc_i; ++l) {
const size_t globHits_size = ExecFileSystemGlob(globHits, globHits_sizeMax, possLoc[l]);
for (g=0; g < globHits_size; ++g) {
found = GetJREPathFromBase(path, pathSize, globHits[g], arch);
if (found) {
simpleLog_logL(SIMPLELOG_LEVEL_FINER,
"JRE found common location env var \"%s\"!",
possLoc[l]);
goto locSearchEnd;
}
}
}
locSearchEnd:
// cleanup
for (l=0; l < possLoc_i; ++l) {
free(possLoc[l]);
possLoc[l] = NULL;
}
return found;
}
