int tc_destroy(TokenCache *tc)
{
register int i;
TLS_VARS;
for (i = 0; i < tc->count; i++) {
pval_destructor(&tc->tokens[i].phplval _INLINE_TLS);
}
if (tc->tokens) {
efree(tc->tokens);
}
return SUCCESS;
}
/*
* If type==0, only last line of output is returned (exec)
* If type==1, all lines will be printed and last lined returned (system)
* If type==2, all lines will be saved to given array (exec with &$array)
* If type==3, output will be printed binary, no lines will be saved or returned (passthru)
*
*/
int php_Exec(int type, char *cmd, pval *array, pval *return_value)
{
FILE *fp;
char *buf, *tmp=NULL;
int buflen = 0;
int t, l, output=1;
int overflow_limit, lcmd, ldir;
int rsrc_id;
char *b, *c, *d=NULL;
#if PHP_SIGCHILD
void (*sig_handler)();
#endif
PLS_FETCH();
FLS_FETCH();
buf = (char*) emalloc(EXEC_INPUT_BUF);
if (!buf) {
php_error(E_WARNING, "Unable to emalloc %d bytes for exec buffer", EXEC_INPUT_BUF);
return -1;
}
buflen = EXEC_INPUT_BUF;
if (PG(safe_mode)) {
lcmd = strlen(cmd);
ldir = strlen(PG(safe_mode_exec_dir));
l = lcmd + ldir + 2;
overflow_limit = l;
c = strchr(cmd, ' ');
if (c) *c = '\0';
if (strstr(cmd, "..")) {
php_error(E_WARNING, "No '..' components allowed in path");
efree(buf);
return -1;
}
d = emalloc(l);
strcpy(d, PG(safe_mode_exec_dir));
overflow_limit -= ldir;
b = strrchr(cmd, PHP_DIR_SEPARATOR);
if (b) {
strcat(d, b);
overflow_limit -= strlen(b);
} else {
strcat(d, "/");
strcat(d, cmd);
overflow_limit-=(strlen(cmd)+1);
}
if (c) {
*c = ' ';
strncat(d, c, overflow_limit);
}
tmp = php_escape_shell_cmd(d);
efree(d);
d = tmp;
#if PHP_SIGCHILD
sig_handler = signal (SIGCHLD, SIG_DFL);
#endif
#ifdef PHP_WIN32
fp = VCWD_POPEN(d, "rb");
#else
fp = VCWD_POPEN(d, "r");
#endif
if (!fp) {
php_error(E_WARNING, "Unable to fork [%s]", d);
efree(d);
efree(buf);
#if PHP_SIGCHILD
signal (SIGCHLD, sig_handler);
#endif
return -1;
}
} else { /* not safe_mode */
#if PHP_SIGCHILD
sig_handler = signal (SIGCHLD, SIG_DFL);
#endif
#ifdef PHP_WIN32
fp = VCWD_POPEN(cmd, "rb");
#else
fp = VCWD_POPEN(cmd, "r");
#endif
if (!fp) {
php_error(E_WARNING, "Unable to fork [%s]", cmd);
efree(buf);
#if PHP_SIGCHILD
signal (SIGCHLD, sig_handler);
#endif
return -1;
}
}
buf[0] = '\0';
if (type==2) {
if (Z_TYPE_P(array) != IS_ARRAY) {
pval_destructor(array);
array_init(array);
}
}
/* we register the resource so that case of an aborted connection the
* fd gets pclosed
*/
rsrc_id = ZEND_REGISTER_RESOURCE(NULL, fp, php_file_le_popen());
if (type != 3) {
l=0;
while ( !feof(fp) || l != 0 ) {
l = 0;
/* Read a line or fill the buffer, whichever comes first */
do {
if ( buflen <= (l+1) ) {
buf = erealloc(buf, buflen + EXEC_INPUT_BUF);
if ( buf == NULL ) {
php_error(E_WARNING, "Unable to erealloc %d bytes for exec buffer",
buflen + EXEC_INPUT_BUF);
#if PHP_SIGCHILD
signal (SIGCHLD, sig_handler);
#endif
return -1;
}
buflen += EXEC_INPUT_BUF;
}
if ( fgets(&(buf[l]), buflen - l, fp) == NULL ) {
/* eof */
break;
}
l += strlen(&(buf[l]));
} while ( (l > 0) && (buf[l-1] != '\n') );
if ( feof(fp) && (l == 0) ) {
break;
}
if (type == 1) {
if (output) PUTS(buf);
sapi_flush();
}
else if (type == 2) {
/* strip trailing whitespaces */
l = strlen(buf);
t = l;
while (l-- && isspace((int)buf[l]));
if (l < t) {
buf[l + 1] = '\0';
}
add_next_index_string(array, buf, 1);
}
}
/* strip trailing spaces */
l = strlen(buf);
t = l;
while (l && isspace((int)buf[l - 1])) {
l--;
}
if (l < t) buf[l] = '\0';
/* Return last line from the shell command */
if (PG(magic_quotes_runtime)) {
int len;
tmp = php_addslashes(buf, 0, &len, 0);
RETVAL_STRINGL(tmp,len,0);
} else {
RETVAL_STRINGL(buf,l,1);
}
} else {
int b, i;
while ((b = fread(buf, 1, buflen, fp)) > 0) {
for (i = 0; i < b; i++)
if (output) (void)PUTC(buf[i]);
}
}
/* the zend_list_delete will pclose our popen'ed process */
zend_list_delete(rsrc_id);
#if HAVE_SYS_WAIT_H
if (WIFEXITED(FG(pclose_ret))) {
FG(pclose_ret) = WEXITSTATUS(FG(pclose_ret));
}
#endif
#if PHP_SIGCHILD
signal (SIGCHLD, sig_handler);
#endif
if (d) {
efree(d);
}
efree(buf);
return FG(pclose_ret);
}
/*
* If type==0, only last line of output is returned (exec)
* If type==1, all lines will be printed and last lined returned (system)
* If type==2, all lines will be saved to given array (exec with &$array)
* If type==3, output will be printed binary, no lines will be saved or returned (passthru)
*
*/
static int _Exec(int type, char *cmd, pval *array, pval *return_value)
{
FILE *fp;
char *buf, *tmp=NULL;
int buflen=0;
int t, l, ret, output=1;
int overflow_limit, lcmd, ldir;
char *b, *c, *d=NULL;
TLS_VARS;
buf = (char*) emalloc(EXEC_INPUT_BUF);
if (!buf) {
php3_error(E_WARNING, "Unable to emalloc %d bytes", EXEC_INPUT_BUF);
return -1;
}
buflen = EXEC_INPUT_BUF;
#ifdef WIN32
(void)AllocConsole(); /* We don't care if this fails. */
#endif
if (php3_ini.safe_mode) {
lcmd = strlen(cmd);
ldir = strlen(php3_ini.safe_mode_exec_dir);
l = lcmd + ldir + 2;
overflow_limit = l;
c = strchr(cmd, ' ');
if (c) *c = '\0';
if (strstr(cmd, "..")) {
php3_error(E_WARNING, "No '..' components allowed in path");
efree(buf);
return -1;
}
d = emalloc(l);
strcpy(d, php3_ini.safe_mode_exec_dir);
overflow_limit -= ldir;
b = strrchr(cmd, '/');
if (b) {
strcat(d, b);
overflow_limit -= strlen(b);
} else {
strcat(d, "/");
strcat(d, cmd);
overflow_limit-=(strlen(cmd)+1);
}
if (c) {
*c = ' ';
strncat(d, c, overflow_limit);
}
tmp = _php3_escapeshellcmd(d);
efree(d);
d = tmp;
#if WIN32|WINNT
fp = popen(d, "rb");
#else
fp = popen(d, "r");
#endif
if (!fp) {
php3_error(E_WARNING, "Unable to fork [%s]", d);
efree(d);
efree(buf);
return -1;
}
} else { /* not safe_mode */
#if WIN32|WINNT
fp = popen(cmd, "rb");
#else
fp = popen(cmd, "r");
#endif
if (!fp) {
php3_error(E_WARNING, "Unable to fork [%s]", cmd);
efree(buf);
return -1;
}
}
buf[0] = '\0';
if (type == 1 || type == 3) {
output=php3_header();
}
if (type==2) {
if (array->type != IS_ARRAY) {
pval_destructor(array _INLINE_TLS);
array_init(array);
}
}
if (type != 3) {
l = 0;
while ( !feof(fp) || l != 0 ) {
l = 0;
/* Read a line or fill the buffer, whichever comes first */
do {
if ( buflen <= (l+1) ) {
buf = erealloc(buf, buflen + EXEC_INPUT_BUF);
if ( buf == NULL ) {
php3_error(E_WARNING, "Unable to erealloc %d bytes",
buflen + EXEC_INPUT_BUF);
return -1;
}
buflen += EXEC_INPUT_BUF;
}
if ( fgets(&(buf[l]), buflen - l, fp) == NULL ) {
/* eof */
break;
}
l += strlen(&(buf[l]));
} while ( (l > 0) && (buf[l-1] != '\n') );
if ( feof(fp) && (l == 0) ) {
break;
}
if (type == 1) {
if (output) PUTS(buf);
#if APACHE
# if MODULE_MAGIC_NUMBER > 19970110
if (output) rflush(GLOBAL(php3_rqst));
# else
if (output) bflush(GLOBAL(php3_rqst)->connection->client);
# endif
#endif
#if CGI_BINARY
fflush(stdout);
#endif
#if FHTTPD
/* fhttpd doesn't flush */
#endif
#if USE_SAPI
GLOBAL(sapi_rqst)->flush(GLOBAL(sapi_rqst)->scid);
#endif
}
else if (type == 2) {
pval tmp;
/* strip trailing whitespaces */
l = strlen(buf);
t = l;
while (l-- && isspace((int)buf[l]));
if (l < t) buf[l + 1] = '\0';
tmp.value.str.len = strlen(buf);
tmp.value.str.val = estrndup(buf,tmp.value.str.len);
tmp.type = IS_STRING;
_php3_hash_next_index_insert(array->value.ht,(void *) &tmp, sizeof(pval), NULL);
}
}
/* strip trailing spaces */
l = strlen(buf);
t = l;
while (l && isspace((int)buf[--l]));
if (l < t) buf[l + 1] = '\0';
/* Return last line from the shell command */
if(php3_ini.magic_quotes_runtime) {
int len;
tmp = _php3_addslashes(buf, 0, &len, 0);
RETVAL_STRINGL(tmp,len,0);
} else {
RETVAL_STRINGL(buf,l+1,1);
}
} else {
int b, i;
while ((b = fread(buf, 1, buflen, fp)) > 0) {
for (i = 0; i < b; i++)
if (output) PUTC(buf[i]);
}
}
ret = pclose(fp);
#ifdef HAVE_SYS_WAIT_H
if (WIFEXITED(ret)) {
ret = WEXITSTATUS(ret);
}
#endif
if (d) efree(d);
efree(buf);
return ret;
}
