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php-src/main/rfc1867.c

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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2018 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Jani Taskinen <jani@php.net> |
+----------------------------------------------------------------------+
*/
/*
* This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/).
*
*/
#include <stdio.h>
#include "php.h"
#include "php_open_temporary_file.h"
#include "zend_globals.h"
#include "php_globals.h"
#include "php_variables.h"
#include "rfc1867.h"
#include "ext/standard/php_string.h"
#include "zend_smart_string.h"
#if defined(PHP_WIN32) && !defined(HAVE_ATOLL)
# define atoll(s) _atoi64(s)
# define HAVE_ATOLL 1
#endif
#ifndef DEBUG_FILE_UPLOAD
# define DEBUG_FILE_UPLOAD 0
#endif
static int dummy_encoding_translation(void)
{
return 0;
}
static char *php_ap_getword(const zend_encoding *encoding, char **line, char stop);
static char *php_ap_getword_conf(const zend_encoding *encoding, char *str);
static php_rfc1867_encoding_translation_t php_rfc1867_encoding_translation = dummy_encoding_translation;
static php_rfc1867_get_detect_order_t php_rfc1867_get_detect_order = NULL;
static php_rfc1867_set_input_encoding_t php_rfc1867_set_input_encoding = NULL;
static php_rfc1867_getword_t php_rfc1867_getword = php_ap_getword;
static php_rfc1867_getword_conf_t php_rfc1867_getword_conf = php_ap_getword_conf;
static php_rfc1867_basename_t php_rfc1867_basename = NULL;
PHPAPI int (*php_rfc1867_callback)(unsigned int event, void *event_data, void **extra) = NULL;
static void safe_php_register_variable(char *var, char *strval, size_t val_len, zval *track_vars_array, zend_bool override_protection);
/* The longest property name we use in an uploaded file array */
#define MAX_SIZE_OF_INDEX sizeof("[tmp_name]")
/* The longest anonymous name */
#define MAX_SIZE_ANONNAME 33
/* Errors */
#define UPLOAD_ERROR_OK 0 /* File upload successful */
#define UPLOAD_ERROR_A 1 /* Uploaded file exceeded upload_max_filesize */
#define UPLOAD_ERROR_B 2 /* Uploaded file exceeded MAX_FILE_SIZE */
#define UPLOAD_ERROR_C 3 /* Partially uploaded */
#define UPLOAD_ERROR_D 4 /* No file uploaded */
#define UPLOAD_ERROR_E 6 /* Missing /tmp or similar directory */
#define UPLOAD_ERROR_F 7 /* Failed to write file to disk */
#define UPLOAD_ERROR_X 8 /* File upload stopped by extension */
void php_rfc1867_register_constants(void) /* {{{ */
{
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_OK", UPLOAD_ERROR_OK, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_INI_SIZE", UPLOAD_ERROR_A, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_FORM_SIZE", UPLOAD_ERROR_B, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_PARTIAL", UPLOAD_ERROR_C, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_NO_FILE", UPLOAD_ERROR_D, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_NO_TMP_DIR", UPLOAD_ERROR_E, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_CANT_WRITE", UPLOAD_ERROR_F, CONST_CS | CONST_PERSISTENT);
REGISTER_MAIN_LONG_CONSTANT("UPLOAD_ERR_EXTENSION", UPLOAD_ERROR_X, CONST_CS | CONST_PERSISTENT);
}
/* }}} */
static void normalize_protected_variable(char *varname) /* {{{ */
{
char *s = varname, *index = NULL, *indexend = NULL, *p;
/* overjump leading space */
while (*s == ' ') {
s++;
}
/* and remove it */
if (s != varname) {
memmove(varname, s, strlen(s)+1);
}
for (p = varname; *p && *p != '['; p++) {
switch(*p) {
case ' ':
case '.':
*p = '_';
break;
}
}
/* find index */
index = strchr(varname, '[');
if (index) {
index++;
s = index;
} else {
return;
}
/* done? */
while (index) {
while (*index == ' ' || *index == '\r' || *index == '\n' || *index=='\t') {
index++;
}
indexend = strchr(index, ']');
indexend = indexend ? indexend + 1 : index + strlen(index);
if (s != index) {
memmove(s, index, strlen(index)+1);
s += indexend-index;
} else {
s = indexend;
}
if (*s == '[') {
s++;
index = s;
} else {
index = NULL;
}
}
*s = '\0';
}
/* }}} */
static void add_protected_variable(char *varname) /* {{{ */
{
normalize_protected_variable(varname);
zend_hash_str_add_empty_element(&PG(rfc1867_protected_variables), varname, strlen(varname));
}
/* }}} */
static zend_bool is_protected_variable(char *varname) /* {{{ */
{
normalize_protected_variable(varname);
return zend_hash_str_exists(&PG(rfc1867_protected_variables), varname, strlen(varname));
}
/* }}} */
static void safe_php_register_variable(char *var, char *strval, size_t val_len, zval *track_vars_array, zend_bool override_protection) /* {{{ */
{
if (override_protection || !is_protected_variable(var)) {
php_register_variable_safe(var, strval, val_len, track_vars_array);
}
}
/* }}} */
static void safe_php_register_variable_ex(char *var, zval *val, zval *track_vars_array, zend_bool override_protection) /* {{{ */
{
if (override_protection || !is_protected_variable(var)) {
php_register_variable_ex(var, val, track_vars_array);
}
}
/* }}} */
static void register_http_post_files_variable(char *strvar, char *val, zval *http_post_files, zend_bool override_protection) /* {{{ */
{
safe_php_register_variable(strvar, val, strlen(val), http_post_files, override_protection);
}
/* }}} */
static void register_http_post_files_variable_ex(char *var, zval *val, zval *http_post_files, zend_bool override_protection) /* {{{ */
{
safe_php_register_variable_ex(var, val, http_post_files, override_protection);
}
/* }}} */
static void free_filename(zval *el) {
zend_string *filename = Z_STR_P(el);
zend_string_release_ex(filename, 0);
}
PHPAPI void destroy_uploaded_files_hash(void) /* {{{ */
{
zval *el;
ZEND_HASH_FOREACH_VAL(SG(rfc1867_uploaded_files), el) {
zend_string *filename = Z_STR_P(el);
VCWD_UNLINK(ZSTR_VAL(filename));
} ZEND_HASH_FOREACH_END();
zend_hash_destroy(SG(rfc1867_uploaded_files));
FREE_HASHTABLE(SG(rfc1867_uploaded_files));
}
/* }}} */
/* {{{ Following code is based on apache_multipart_buffer.c from libapreq-0.33 package. */
#define FILLUNIT (1024 * 5)
typedef struct {
/* read buffer */
char *buffer;
char *buf_begin;
int bufsize;
int bytes_in_buffer;
/* boundary info */
char *boundary;
char *boundary_next;
int boundary_next_len;
const zend_encoding *input_encoding;
const zend_encoding **detect_order;
size_t detect_order_size;
} multipart_buffer;
typedef struct {
char *key;
char *value;
} mime_header_entry;
/*
* Fill up the buffer with client data.
* Returns number of bytes added to buffer.
*/
static int fill_buffer(multipart_buffer *self)
{
int bytes_to_read, total_read = 0, actual_read = 0;
/* shift the existing data if necessary */
if (self->bytes_in_buffer > 0 && self->buf_begin != self->buffer) {
memmove(self->buffer, self->buf_begin, self->bytes_in_buffer);
}
self->buf_begin = self->buffer;
/* calculate the free space in the buffer */
bytes_to_read = self->bufsize - self->bytes_in_buffer;
/* read the required number of bytes */
while (bytes_to_read > 0) {
char *buf = self->buffer + self->bytes_in_buffer;
actual_read = (int)sapi_module.read_post(buf, bytes_to_read);
/* update the buffer length */
if (actual_read > 0) {
self->bytes_in_buffer += actual_read;
SG(read_post_bytes) += actual_read;
total_read += actual_read;
bytes_to_read -= actual_read;
} else {
break;
}
}
return total_read;
}
/* eof if we are out of bytes, or if we hit the final boundary */
static int multipart_buffer_eof(multipart_buffer *self)
{
return self->bytes_in_buffer == 0 && fill_buffer(self) < 1;
}
/* create new multipart_buffer structure */
static multipart_buffer *multipart_buffer_new(char *boundary, int boundary_len)
{
multipart_buffer *self = (multipart_buffer *) ecalloc(1, sizeof(multipart_buffer));
int minsize = boundary_len + 6;
if (minsize < FILLUNIT) minsize = FILLUNIT;
self->buffer = (char *) ecalloc(1, minsize + 1);
self->bufsize = minsize;
spprintf(&self->boundary, 0, "--%s", boundary);
self->boundary_next_len = (int)spprintf(&self->boundary_next, 0, "\n--%s", boundary);
self->buf_begin = self->buffer;
self->bytes_in_buffer = 0;
if (php_rfc1867_encoding_translation()) {
php_rfc1867_get_detect_order(&self->detect_order, &self->detect_order_size);
} else {
self->detect_order = NULL;
self->detect_order_size = 0;
}
self->input_encoding = NULL;
return self;
}
/*
* Gets the next CRLF terminated line from the input buffer.
* If it doesn't find a CRLF, and the buffer isn't completely full, returns
* NULL; otherwise, returns the beginning of the null-terminated line,
* minus the CRLF.
*
* Note that we really just look for LF terminated lines. This works
* around a bug in internet explorer for the macintosh which sends mime
* boundaries that are only LF terminated when you use an image submit
* button in a multipart/form-data form.
*/
static char *next_line(multipart_buffer *self)
{
/* look for LF in the data */
char* line = self->buf_begin;
char* ptr = memchr(self->buf_begin, '\n', self->bytes_in_buffer);
if (ptr) { /* LF found */
/* terminate the string, remove CRLF */
if ((ptr - line) > 0 && *(ptr-1) == '\r') {
*(ptr-1) = 0;
} else {
*ptr = 0;
}
/* bump the pointer */
self->buf_begin = ptr + 1;
self->bytes_in_buffer -= (self->buf_begin - line);
} else { /* no LF found */
/* buffer isn't completely full, fail */
if (self->bytes_in_buffer < self->bufsize) {
return NULL;
}
/* return entire buffer as a partial line */
line[self->bufsize] = 0;
self->buf_begin = ptr;
self->bytes_in_buffer = 0;
}
return line;
}
/* Returns the next CRLF terminated line from the client */
static char *get_line(multipart_buffer *self)
{
char* ptr = next_line(self);
if (!ptr) {
fill_buffer(self);
ptr = next_line(self);
}
return ptr;
}
/* Free header entry */
static void php_free_hdr_entry(mime_header_entry *h)
{
if (h->key) {
efree(h->key);
}
if (h->value) {
efree(h->value);
}
}
/* finds a boundary */
static int find_boundary(multipart_buffer *self, char *boundary)
{
char *line;
/* loop through lines */
while( (line = get_line(self)) )
{
/* finished if we found the boundary */
if (!strcmp(line, boundary)) {
return 1;
}
}
/* didn't find the boundary */
return 0;
}
/* parse headers */
static int multipart_buffer_headers(multipart_buffer *self, zend_llist *header)
{
char *line;
mime_header_entry entry = {0};
smart_string buf_value = {0};
char *key = NULL;
/* didn't find boundary, abort */
if (!find_boundary(self, self->boundary)) {
return 0;
}
/* get lines of text, or CRLF_CRLF */
while ((line = get_line(self)) && line[0] != '\0') {
/* add header to table */
char *value = NULL;
if (php_rfc1867_encoding_translation()) {
self->input_encoding = zend_multibyte_encoding_detector((const unsigned char *) line, strlen(line), self->detect_order, self->detect_order_size);
}
/* space in the beginning means same header */
if (!isspace(line[0])) {
value = strchr(line, ':');
}
if (value) {
if (buf_value.c && key) {
/* new entry, add the old one to the list */
smart_string_0(&buf_value);
entry.key = key;
entry.value = buf_value.c;
zend_llist_add_element(header, &entry);
buf_value.c = NULL;
key = NULL;
}
*value = '\0';
do { value++; } while (isspace(*value));
key = estrdup(line);
smart_string_appends(&buf_value, value);
} else if (buf_value.c) { /* If no ':' on the line, add to previous line */
smart_string_appends(&buf_value, line);
} else {
continue;
}
}
if (buf_value.c && key) {
/* add the last one to the list */
smart_string_0(&buf_value);
entry.key = key;
entry.value = buf_value.c;
zend_llist_add_element(header, &entry);
}
return 1;
}
static char *php_mime_get_hdr_value(zend_llist header, char *key)
{
mime_header_entry *entry;
if (key == NULL) {
return NULL;
}
entry = zend_llist_get_first(&header);
while (entry) {
if (!strcasecmp(entry->key, key)) {
return entry->value;
}
entry = zend_llist_get_next(&header);
}
return NULL;
}
static char *php_ap_getword(const zend_encoding *encoding, char **line, char stop)
{
char *pos = *line, quote;
char *res;
while (*pos && *pos != stop) {
if ((quote = *pos) == '"' || quote == '\'') {
++pos;
while (*pos && *pos != quote) {
if (*pos == '\\' && pos[1] && pos[1] == quote) {
pos += 2;
} else {
++pos;
}
}
if (*pos) {
++pos;
}
} else ++pos;
}
if (*pos == '\0') {
res = estrdup(*line);
*line += strlen(*line);
return res;
}
res = estrndup(*line, pos - *line);
while (*pos == stop) {
++pos;
}
*line = pos;
return res;
}
static char *substring_conf(char *start, int len, char quote)
{
char *result = emalloc(len + 1);
char *resp = result;
int i;
for (i = 0; i < len && start[i] != quote; ++i) {
if (start[i] == '\\' && (start[i + 1] == '\\' || (quote && start[i + 1] == quote))) {
*resp++ = start[++i];
} else {
*resp++ = start[i];
}
}
*resp = '\0';
return result;
}
static char *php_ap_getword_conf(const zend_encoding *encoding, char *str)
{
while (*str && isspace(*str)) {
++str;
}
if (!*str) {
return estrdup("");
}
if (*str == '"' || *str == '\'') {
char quote = *str;
str++;
return substring_conf(str, (int)strlen(str), quote);
} else {
char *strend = str;
while (*strend && !isspace(*strend)) {
++strend;
}
return substring_conf(str, strend - str, 0);
}
}
static char *php_ap_basename(const zend_encoding *encoding, char *path)
{
char *s = strrchr(path, '\\');
char *s2 = strrchr(path, '/');
if (s && s2) {
if (s > s2) {
++s;
} else {
s = ++s2;
}
return s;
} else if (s) {
return ++s;
} else if (s2) {
return ++s2;
}
return path;
}
/*
* Search for a string in a fixed-length byte string.
* If partial is true, partial matches are allowed at the end of the buffer.
* Returns NULL if not found, or a pointer to the start of the first match.
*/
static void *php_ap_memstr(char *haystack, int haystacklen, char *needle, int needlen, int partial)
{
int len = haystacklen;
char *ptr = haystack;
/* iterate through first character matches */
while( (ptr = memchr(ptr, needle[0], len)) ) {
/* calculate length after match */
len = haystacklen - (ptr - (char *)haystack);
/* done if matches up to capacity of buffer */
if (memcmp(needle, ptr, needlen < len ? needlen : len) == 0 && (partial || len >= needlen)) {
break;
}
/* next character */
ptr++; len--;
}
return ptr;
}
/* read until a boundary condition */
static int multipart_buffer_read(multipart_buffer *self, char *buf, size_t bytes, int *end)
{
size_t len, max;
char *bound;
/* fill buffer if needed */
if (bytes > (size_t)self->bytes_in_buffer) {
fill_buffer(self);
}
/* look for a potential boundary match, only read data up to that point */
if ((bound = php_ap_memstr(self->buf_begin, self->bytes_in_buffer, self->boundary_next, self->boundary_next_len, 1))) {
max = bound - self->buf_begin;
if (end && php_ap_memstr(self->buf_begin, self->bytes_in_buffer, self->boundary_next, self->boundary_next_len, 0)) {
*end = 1;
}
} else {
max = self->bytes_in_buffer;
}
/* maximum number of bytes we are reading */
len = max < bytes-1 ? max : bytes-1;
/* if we read any data... */
if (len > 0) {
/* copy the data */
memcpy(buf, self->buf_begin, len);
buf[len] = 0;
if (bound && len > 0 && buf[len-1] == '\r') {
buf[--len] = 0;
}
/* update the buffer */
self->bytes_in_buffer -= (int)len;
self->buf_begin += len;
}
return (int)len;
}
/*
XXX: this is horrible memory-usage-wise, but we only expect
to do this on small pieces of form data.
*/
static char *multipart_buffer_read_body(multipart_buffer *self, size_t *len)
{
char buf[FILLUNIT], *out=NULL;
int total_bytes=0, read_bytes=0;
while((read_bytes = multipart_buffer_read(self, buf, sizeof(buf), NULL))) {
out = erealloc(out, total_bytes + read_bytes + 1);
memcpy(out + total_bytes, buf, read_bytes);
total_bytes += read_bytes;
}
if (out) {
out[total_bytes] = '\0';
}
*len = total_bytes;
return out;
}
/* }}} */
/*
* The combined READER/HANDLER
*
*/
SAPI_API SAPI_POST_HANDLER_FUNC(rfc1867_post_handler) /* {{{ */
{
char *boundary, *s = NULL, *boundary_end = NULL, *start_arr = NULL, *array_index = NULL;
char *lbuf = NULL, *abuf = NULL;
zend_string *temp_filename = NULL;
int boundary_len = 0, cancel_upload = 0, is_arr_upload = 0, array_len = 0;
int64_t total_bytes = 0, max_file_size = 0;
int skip_upload = 0, anonindex = 0, is_anonymous;
HashTable *uploaded_files = NULL;
multipart_buffer *mbuff;
zval *array_ptr = (zval *) arg;
int fd = -1;
zend_llist header;
void *event_extra_data = NULL;
unsigned int llen = 0;
int upload_cnt = INI_INT("max_file_uploads");
const zend_encoding *internal_encoding = zend_multibyte_get_internal_encoding();
php_rfc1867_getword_t getword;
php_rfc1867_getword_conf_t getword_conf;
php_rfc1867_basename_t _basename;
zend_long count = 0;
if (php_rfc1867_encoding_translation() && internal_encoding) {
getword = php_rfc1867_getword;
getword_conf = php_rfc1867_getword_conf;
_basename = php_rfc1867_basename;
} else {
getword = php_ap_getword;
getword_conf = php_ap_getword_conf;
_basename = php_ap_basename;
}
if (SG(post_max_size) > 0 && SG(request_info).content_length > SG(post_max_size)) {
sapi_module.sapi_error(E_WARNING, "POST Content-Length of " ZEND_LONG_FMT " bytes exceeds the limit of " ZEND_LONG_FMT " bytes", SG(request_info).content_length, SG(post_max_size));
return;
}
/* Get the boundary */
boundary = strstr(content_type_dup, "boundary");
if (!boundary) {
int content_type_len = (int)strlen(content_type_dup);
char *content_type_lcase = estrndup(content_type_dup, content_type_len);
php_strtolower(content_type_lcase, content_type_len);
boundary = strstr(content_type_lcase, "boundary");
if (boundary) {
boundary = content_type_dup + (boundary - content_type_lcase);
}
efree(content_type_lcase);
}
if (!boundary || !(boundary = strchr(boundary, '='))) {
sapi_module.sapi_error(E_WARNING, "Missing boundary in multipart/form-data POST data");
return;
}
boundary++;
boundary_len = (int)strlen(boundary);
if (boundary[0] == '"') {
boundary++;
boundary_end = strchr(boundary, '"');
if (!boundary_end) {
sapi_module.sapi_error(E_WARNING, "Invalid boundary in multipart/form-data POST data");
return;
}
} else {
/* search for the end of the boundary */
boundary_end = strpbrk(boundary, ",;");
}
if (boundary_end) {
boundary_end[0] = '\0';
boundary_len = boundary_end-boundary;
}
/* Initialize the buffer */
if (!(mbuff = multipart_buffer_new(boundary, boundary_len))) {
sapi_module.sapi_error(E_WARNING, "Unable to initialize the input buffer");
return;
}
/* Initialize $_FILES[] */
zend_hash_init(&PG(rfc1867_protected_variables), 8, NULL, NULL, 0);
ALLOC_HASHTABLE(uploaded_files);
zend_hash_init(uploaded_files, 8, NULL, free_filename, 0);
SG(rfc1867_uploaded_files) = uploaded_files;
if (Z_TYPE(PG(http_globals)[TRACK_VARS_FILES]) != IS_ARRAY) {
/* php_auto_globals_create_files() might have already done that */
array_init(&PG(http_globals)[TRACK_VARS_FILES]);
}
zend_llist_init(&header, sizeof(mime_header_entry), (llist_dtor_func_t) php_free_hdr_entry, 0);
if (php_rfc1867_callback != NULL) {
multipart_event_start event_start;
event_start.content_length = SG(request_info).content_length;
if (php_rfc1867_callback(MULTIPART_EVENT_START, &event_start, &event_extra_data) == FAILURE) {
goto fileupload_done;
}
}
while (!multipart_buffer_eof(mbuff))
{
char buff[FILLUNIT];
char *cd = NULL, *param = NULL, *filename = NULL, *tmp = NULL;
size_t blen = 0, wlen = 0;
zend_off_t offset;
zend_llist_clean(&header);
if (!multipart_buffer_headers(mbuff, &header)) {
goto fileupload_done;
}
if ((cd = php_mime_get_hdr_value(header, "Content-Disposition"))) {
char *pair = NULL;
int end = 0;
while (isspace(*cd)) {
++cd;
}
while (*cd && (pair = getword(mbuff->input_encoding, &cd, ';')))
{
char *key = NULL, *word = pair;
while (isspace(*cd)) {
++cd;
}
if (strchr(pair, '=')) {
key = getword(mbuff->input_encoding, &pair, '=');
if (!strcasecmp(key, "name")) {
if (param) {
efree(param);
}
param = getword_conf(mbuff->input_encoding, pair);
if (mbuff->input_encoding && internal_encoding) {
unsigned char *new_param;
size_t new_param_len;
if ((size_t)-1 != zend_multibyte_encoding_converter(&new_param, &new_param_len, (unsigned char *)param, strlen(param), internal_encoding, mbuff->input_encoding)) {
efree(param);
param = (char *)new_param;
}
}
} else if (!strcasecmp(key, "filename")) {
if (filename) {
efree(filename);
}
filename = getword_conf(mbuff->input_encoding, pair);
if (mbuff->input_encoding && internal_encoding) {
unsigned char *new_filename;
size_t new_filename_len;
if ((size_t)-1 != zend_multibyte_encoding_converter(&new_filename, &new_filename_len, (unsigned char *)filename, strlen(filename), internal_encoding, mbuff->input_encoding)) {
efree(filename);
filename = (char *)new_filename;
}
}
}
}
if (key) {
efree(key);
}
efree(word);
}
/* Normal form variable, safe to read all data into memory */
if (!filename && param) {
size_t value_len;
char *value = multipart_buffer_read_body(mbuff, &value_len);
size_t new_val_len; /* Dummy variable */
if (!value) {
value = estrdup("");
value_len = 0;
}
if (mbuff->input_encoding && internal_encoding) {
unsigned char *new_value;
size_t new_value_len;
if ((size_t)-1 != zend_multibyte_encoding_converter(&new_value, &new_value_len, (unsigned char *)value, value_len, internal_encoding, mbuff->input_encoding)) {
efree(value);
value = (char *)new_value;
value_len = new_value_len;
}
}
if (++count <= PG(max_input_vars) && sapi_module.input_filter(PARSE_POST, param, &value, value_len, &new_val_len)) {
if (php_rfc1867_callback != NULL) {
multipart_event_formdata event_formdata;
size_t newlength = new_val_len;
event_formdata.post_bytes_processed = SG(read_post_bytes);
event_formdata.name = param;
event_formdata.value = &value;
event_formdata.length = new_val_len;
event_formdata.newlength = &newlength;
if (php_rfc1867_callback(MULTIPART_EVENT_FORMDATA, &event_formdata, &event_extra_data) == FAILURE) {
efree(param);
efree(value);
continue;
}
new_val_len = newlength;
}
safe_php_register_variable(param, value, new_val_len, array_ptr, 0);
} else {
if (count == PG(max_input_vars) + 1) {
php_error_docref(NULL, E_WARNING, "Input variables exceeded " ZEND_LONG_FMT ". To increase the limit change max_input_vars in php.ini.", PG(max_input_vars));
}
if (php_rfc1867_callback != NULL) {
multipart_event_formdata event_formdata;
event_formdata.post_bytes_processed = SG(read_post_bytes);
event_formdata.name = param;
event_formdata.value = &value;
event_formdata.length = value_len;
event_formdata.newlength = NULL;
php_rfc1867_callback(MULTIPART_EVENT_FORMDATA, &event_formdata, &event_extra_data);
}
}
if (!strcasecmp(param, "MAX_FILE_SIZE")) {
#ifdef HAVE_ATOLL
max_file_size = atoll(value);
#else
max_file_size = strtoll(value, NULL, 10);
#endif
}
efree(param);
efree(value);
continue;
}
/* If file_uploads=off, skip the file part */
if (!PG(file_uploads)) {
skip_upload = 1;
} else if (upload_cnt <= 0) {
skip_upload = 1;
sapi_module.sapi_error(E_WARNING, "Maximum number of allowable file uploads has been exceeded");
}
/* Return with an error if the posted data is garbled */
if (!param && !filename) {
sapi_module.sapi_error(E_WARNING, "File Upload Mime headers garbled");
goto fileupload_done;
}
if (!param) {
is_anonymous = 1;
param = emalloc(MAX_SIZE_ANONNAME);
snprintf(param, MAX_SIZE_ANONNAME, "%u", anonindex++);
} else {
is_anonymous = 0;
}
/* New Rule: never repair potential malicious user input */
if (!skip_upload) {
long c = 0;
tmp = param;
while (*tmp) {
if (*tmp == '[') {
c++;
} else if (*tmp == ']') {
c--;
if (tmp[1] && tmp[1] != '[') {
skip_upload = 1;
break;
}
}
if (c < 0) {
skip_upload = 1;
break;
}
tmp++;
}
/* Brackets should always be closed */
if(c != 0) {
skip_upload = 1;
}
}
total_bytes = cancel_upload = 0;
temp_filename = NULL;
fd = -1;
if (!skip_upload && php_rfc1867_callback != NULL) {
multipart_event_file_start event_file_start;
event_file_start.post_bytes_processed = SG(read_post_bytes);
event_file_start.name = param;
event_file_start.filename = &filename;
if (php_rfc1867_callback(MULTIPART_EVENT_FILE_START, &event_file_start, &event_extra_data) == FAILURE) {
temp_filename = NULL;
efree(param);
efree(filename);
continue;
}
}
if (skip_upload) {
efree(param);
efree(filename);
continue;
}
if (filename[0] == '\0') {
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "No file uploaded");
#endif
cancel_upload = UPLOAD_ERROR_D;
}
offset = 0;
end = 0;
if (!cancel_upload) {
/* only bother to open temp file if we have data */
blen = multipart_buffer_read(mbuff, buff, sizeof(buff), &end);
#if DEBUG_FILE_UPLOAD
if (blen > 0) {
#else
/* in non-debug mode we have no problem with 0-length files */
{
#endif
fd = php_open_temporary_fd_ex(PG(upload_tmp_dir), "php", &temp_filename, 1);
upload_cnt--;
if (fd == -1) {
sapi_module.sapi_error(E_WARNING, "File upload error - unable to create a temporary file");
cancel_upload = UPLOAD_ERROR_E;
}
}
}
while (!cancel_upload && (blen > 0))
{
if (php_rfc1867_callback != NULL) {
multipart_event_file_data event_file_data;
event_file_data.post_bytes_processed = SG(read_post_bytes);
event_file_data.offset = offset;
event_file_data.data = buff;
event_file_data.length = blen;
event_file_data.newlength = &blen;
if (php_rfc1867_callback(MULTIPART_EVENT_FILE_DATA, &event_file_data, &event_extra_data) == FAILURE) {
cancel_upload = UPLOAD_ERROR_X;
continue;
}
}
if (PG(upload_max_filesize) > 0 && (zend_long)(total_bytes+blen) > PG(upload_max_filesize)) {
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "upload_max_filesize of " ZEND_LONG_FMT " bytes exceeded - file [%s=%s] not saved", PG(upload_max_filesize), param, filename);
#endif
cancel_upload = UPLOAD_ERROR_A;
} else if (max_file_size && ((zend_long)(total_bytes+blen) > max_file_size)) {
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "MAX_FILE_SIZE of %" PRId64 " bytes exceeded - file [%s=%s] not saved", max_file_size, param, filename);
#endif
cancel_upload = UPLOAD_ERROR_B;
} else if (blen > 0) {
#ifdef PHP_WIN32
wlen = write(fd, buff, (unsigned int)blen);
#else
wlen = write(fd, buff, blen);
#endif
if (wlen == (size_t)-1) {
/* write failed */
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "write() failed - %s", strerror(errno));
#endif
cancel_upload = UPLOAD_ERROR_F;
} else if (wlen < blen) {
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "Only %zd bytes were written, expected to write %zd", wlen, blen);
#endif
cancel_upload = UPLOAD_ERROR_F;
} else {
total_bytes += wlen;
}
offset += wlen;
}
/* read data for next iteration */
blen = multipart_buffer_read(mbuff, buff, sizeof(buff), &end);
}
if (fd != -1) { /* may not be initialized if file could not be created */
close(fd);
}
if (!cancel_upload && !end) {
#if DEBUG_FILE_UPLOAD
sapi_module.sapi_error(E_NOTICE, "Missing mime boundary at the end of the data for file %s", filename[0] != '\0' ? filename : "");
#endif
cancel_upload = UPLOAD_ERROR_C;
}
#if DEBUG_FILE_UPLOAD
if (filename[0] != '\0' && total_bytes == 0 && !cancel_upload) {
sapi_module.sapi_error(E_WARNING, "Uploaded file size 0 - file [%s=%s] not saved", param, filename);
cancel_upload = 5;
}
#endif
if (php_rfc1867_callback != NULL) {
multipart_event_file_end event_file_end;
event_file_end.post_bytes_processed = SG(read_post_bytes);
event_file_end.temp_filename = temp_filename ? ZSTR_VAL(temp_filename) : NULL;
event_file_end.cancel_upload = cancel_upload;
if (php_rfc1867_callback(MULTIPART_EVENT_FILE_END, &event_file_end, &event_extra_data) == FAILURE) {
cancel_upload = UPLOAD_ERROR_X;
}
}
if (cancel_upload) {
if (temp_filename) {
if (cancel_upload != UPLOAD_ERROR_E) { /* file creation failed */
unlink(ZSTR_VAL(temp_filename));
}
zend_string_release_ex(temp_filename, 0);
}
temp_filename = NULL;
} else {
zend_hash_add_ptr(SG(rfc1867_uploaded_files), temp_filename, temp_filename);
}
/* is_arr_upload is true when name of file upload field
* ends in [.*]
* start_arr is set to point to 1st [ */
is_arr_upload = (start_arr = strchr(param,'[')) && (param[strlen(param)-1] == ']');
if (is_arr_upload) {
array_len = (int)strlen(start_arr);
if (array_index) {
efree(array_index);
}
array_index = estrndup(start_arr + 1, array_len - 2);
}
/* Add $foo_name */
if (llen < strlen(param) + MAX_SIZE_OF_INDEX + 1) {
llen = (int)strlen(param);
lbuf = (char *) safe_erealloc(lbuf, llen, 1, MAX_SIZE_OF_INDEX + 1);
llen += MAX_SIZE_OF_INDEX + 1;
}
if (is_arr_upload) {
if (abuf) efree(abuf);
abuf = estrndup(param, strlen(param)-array_len);
snprintf(lbuf, llen, "%s_name[%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s_name", param);
}
/* The \ check should technically be needed for win32 systems only where
* it is a valid path separator. However, IE in all it's wisdom always sends
* the full path of the file on the user's filesystem, which means that unless
* the user does basename() they get a bogus file name. Until IE's user base drops
* to nill or problem is fixed this code must remain enabled for all systems. */
s = _basename(internal_encoding, filename);
if (!s) {
s = filename;
}
if (!is_anonymous) {
safe_php_register_variable(lbuf, s, strlen(s), NULL, 0);
}
/* Add $foo[name] */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s[name][%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s[name]", param);
}
register_http_post_files_variable(lbuf, s, &PG(http_globals)[TRACK_VARS_FILES], 0);
efree(filename);
s = NULL;
/* Possible Content-Type: */
if (cancel_upload || !(cd = php_mime_get_hdr_value(header, "Content-Type"))) {
cd = "";
} else {
/* fix for Opera 6.01 */
s = strchr(cd, ';');
if (s != NULL) {
*s = '\0';
}
}
/* Add $foo_type */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s_type[%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s_type", param);
}
if (!is_anonymous) {
safe_php_register_variable(lbuf, cd, strlen(cd), NULL, 0);
}
/* Add $foo[type] */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s[type][%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s[type]", param);
}
register_http_post_files_variable(lbuf, cd, &PG(http_globals)[TRACK_VARS_FILES], 0);
/* Restore Content-Type Header */
if (s != NULL) {
*s = ';';
}
s = "";
{
/* store temp_filename as-is (in case upload_tmp_dir
* contains escapeable characters. escape only the variable name.) */
zval zfilename;
/* Initialize variables */
add_protected_variable(param);
/* if param is of form xxx[.*] this will cut it to xxx */
if (!is_anonymous) {
if (temp_filename) {
ZVAL_STR_COPY(&zfilename, temp_filename);
} else {
ZVAL_EMPTY_STRING(&zfilename);
}
safe_php_register_variable_ex(param, &zfilename, NULL, 1);
}
/* Add $foo[tmp_name] */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s[tmp_name][%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s[tmp_name]", param);
}
add_protected_variable(lbuf);
if (temp_filename) {
ZVAL_STR_COPY(&zfilename, temp_filename);
} else {
ZVAL_EMPTY_STRING(&zfilename);
}
register_http_post_files_variable_ex(lbuf, &zfilename, &PG(http_globals)[TRACK_VARS_FILES], 1);
}
{
zval file_size, error_type;
int size_overflow = 0;
char file_size_buf[65];
ZVAL_LONG(&error_type, cancel_upload);
/* Add $foo[error] */
if (cancel_upload) {
ZVAL_LONG(&file_size, 0);
} else {
if (total_bytes > ZEND_LONG_MAX) {
#ifdef PHP_WIN32
if (_i64toa_s(total_bytes, file_size_buf, 65, 10)) {
file_size_buf[0] = '0';
file_size_buf[1] = '\0';
}
#else
{
int __len = snprintf(file_size_buf, 65, "%" PRId64, total_bytes);
file_size_buf[__len] = '\0';
}
#endif
size_overflow = 1;
} else {
ZVAL_LONG(&file_size, total_bytes);
}
}
if (is_arr_upload) {
snprintf(lbuf, llen, "%s[error][%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s[error]", param);
}
register_http_post_files_variable_ex(lbuf, &error_type, &PG(http_globals)[TRACK_VARS_FILES], 0);
/* Add $foo_size */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s_size[%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s_size", param);
}
if (!is_anonymous) {
if (size_overflow) {
ZVAL_STRING(&file_size, file_size_buf);
}
safe_php_register_variable_ex(lbuf, &file_size, NULL, size_overflow);
}
/* Add $foo[size] */
if (is_arr_upload) {
snprintf(lbuf, llen, "%s[size][%s]", abuf, array_index);
} else {
snprintf(lbuf, llen, "%s[size]", param);
}
if (size_overflow) {
ZVAL_STRING(&file_size, file_size_buf);
}
register_http_post_files_variable_ex(lbuf, &file_size, &PG(http_globals)[TRACK_VARS_FILES], size_overflow);
}
efree(param);
}
}
fileupload_done:
if (php_rfc1867_callback != NULL) {
multipart_event_end event_end;
event_end.post_bytes_processed = SG(read_post_bytes);
php_rfc1867_callback(MULTIPART_EVENT_END, &event_end, &event_extra_data);
}
if (lbuf) efree(lbuf);
if (abuf) efree(abuf);
if (array_index) efree(array_index);
zend_hash_destroy(&PG(rfc1867_protected_variables));
zend_llist_destroy(&header);
if (mbuff->boundary_next) efree(mbuff->boundary_next);
if (mbuff->boundary) efree(mbuff->boundary);
if (mbuff->buffer) efree(mbuff->buffer);
if (mbuff) efree(mbuff);
}
/* }}} */
SAPI_API void php_rfc1867_set_multibyte_callbacks(
php_rfc1867_encoding_translation_t encoding_translation,
php_rfc1867_get_detect_order_t get_detect_order,
php_rfc1867_set_input_encoding_t set_input_encoding,
php_rfc1867_getword_t getword,
php_rfc1867_getword_conf_t getword_conf,
php_rfc1867_basename_t basename) /* {{{ */
{
php_rfc1867_encoding_translation = encoding_translation;
php_rfc1867_get_detect_order = get_detect_order;
php_rfc1867_set_input_encoding = set_input_encoding;
php_rfc1867_getword = getword;
php_rfc1867_getword_conf = getword_conf;
php_rfc1867_basename = basename;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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