static void test_mg_strcasestr(void) {
static const char *big1 = "abcdef";
ASSERT(mg_strcasestr("Y", "X") == NULL);
ASSERT(mg_strcasestr("Y", "y") != NULL);
ASSERT(mg_strcasestr(big1, "X") == NULL);
ASSERT(mg_strcasestr(big1, "CD") == big1 + 2);
ASSERT(mg_strcasestr("aa", "AAB") == NULL);
}
END_TEST
START_TEST(test_mg_strcasestr)
{
/* Adapted from unit_test.c */
/* Copyright (c) 2013-2015 the Civetweb developers */
/* Copyright (c) 2004-2013 Sergey Lyubka */
static const char *big1 = "abcdef";
ck_assert(mg_strcasestr("Y", "X") == NULL);
ck_assert(mg_strcasestr("Y", "y") != NULL);
ck_assert(mg_strcasestr(big1, "X") == NULL);
ck_assert(mg_strcasestr(big1, "CD") == big1 + 2);
ck_assert(mg_strcasestr("aa", "AAB") == NULL);
}
FILE *mg_upload(struct mg_connection *conn, const char *destination_dir,
char *path, int path_len) {
const char *content_type_header, *boundary_start;
char *buf, fname[1024], boundary[100], *s, *p;
int bl, n, i, j, headers_len, boundary_len, eof, buf_len, to_read, len = 0;
FILE *fp;
// Request looks like this:
//
// POST /upload HTTP/1.1
// Host: 127.0.0.1:8080
// Content-Length: 244894
// Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryRVr
//
// ------WebKitFormBoundaryRVr
// Content-Disposition: form-data; name="file"; filename="accum.png"
// Content-Type: image/png
//
// <89>PNG
// <PNG DATA>
// ------WebKitFormBoundaryRVr
// Extract boundary string from the Content-Type header
if ((content_type_header = mg_get_header(conn, "Content-Type")) == NULL ||
(boundary_start = mg_strcasestr(content_type_header,
"boundary=")) == NULL ||
(sscanf(boundary_start, "boundary=\"%99[^\"]\"", boundary) == 0 &&
sscanf(boundary_start, "boundary=%99s", boundary) == 0) ||
boundary[0] == '\0') {
return NULL;
}
boundary_len = strlen(boundary);
bl = boundary_len + 4; // \r\n--<boundary>
// buf
// conn->buf |<--------- buf_len ------>|
// |=================|==========|===============|
// |<--request_len-->|<--len--->| |
// |<-----------data_len------->| conn->buf + conn->buf_size
buf = conn->buf + conn->request_len;
buf_len = conn->buf_size - conn->request_len;
len = conn->data_len - conn->request_len;
for (;;) {
// Pull in headers
assert(len >= 0 && len <= buf_len);
to_read = buf_len - len;
if (to_read > left_to_read(conn)) {
to_read = (int) left_to_read(conn);
}
while (len < buf_len &&
(n = pull(NULL, conn, buf + len, to_read)) > 0) {
len += n;
}
if ((headers_len = get_request_len(buf, len)) <= 0) {
break;
}
// Fetch file name.
fname[0] = '\0';
for (i = j = 0; i < headers_len; i++) {
if (buf[i] == '\r' && buf[i + 1] == '\n') {
buf[i] = buf[i + 1] = '\0';
// TODO(lsm): don't expect filename to be the 3rd field,
// parse the header properly instead.
sscanf(&buf[j], "Content-Disposition: %*s %*s filename=\"%1023[^\"]",
fname);
j = i + 2;
}
}
// Give up if the headers are not what we expect
if (fname[0] == '\0') {
break;
}
// Move data to the beginning of the buffer
assert(len >= headers_len);
memmove(buf, &buf[headers_len], len - headers_len);
len -= headers_len;
conn->data_len = conn->request_len + len;
// We open the file with exclusive lock held. This guarantee us
// there is no other thread can save into the same file simultaneously.
fp = NULL;
// Construct destination file name. Do not allow paths to have slashes.
s = fname;
if ((p = strrchr(fname, '/')) != NULL && p > s) s = p;
if ((p = strrchr(fname, '\\')) != NULL && p > s) s = p;
// Open file in binary mode. TODO: set an exclusive lock.
snprintf(path, path_len, "%s/%s", destination_dir, s);
if ((fp = fopen(path, "wb")) == NULL) {
break;
}
// Read POST data, write into file until boundary is found.
eof = n = 0;
do {
len += n;
for (i = 0; i < len - bl; i++) {
if (!memcmp(&buf[i], "\r\n--", 4) &&
!memcmp(&buf[i + 4], boundary, boundary_len)) {
// Found boundary, that's the end of file data.
fwrite(buf, 1, i, fp);
eof = 1;
memmove(buf, &buf[i + bl], len - (i + bl));
len -= i + bl;
break;
}
}
if (!eof && len > bl) {
fwrite(buf, 1, len - bl, fp);
memmove(buf, &buf[len - bl], bl);
len = bl;
}
to_read = buf_len - len;
if (to_read > left_to_read(conn)) {
to_read = (int) left_to_read(conn);
}
} while (!eof && (n = pull(NULL, conn, buf + len, to_read)) > 0);
conn->data_len = conn->request_len + len;
if (eof) {
rewind(fp);
return fp;
} else {
fclose(fp);
}
}
return NULL;
}
