/**
* Creates a new multipart/form-data parser.
*
* @param boundary
* @return New parser, or NULL on memory allocation failure.
*/
htp_mpartp_t * htp_mpartp_create(htp_connp_t *connp, char *boundary) {
if ((connp == NULL)||(boundary == NULL)) return NULL;
htp_mpartp_t *mpartp = calloc(1, sizeof (htp_mpartp_t));
if (mpartp == NULL) return NULL;
mpartp->connp = connp;
mpartp->boundary_pieces = bstr_builder_create();
if (mpartp->boundary_pieces == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->part_pieces = bstr_builder_create();
if (mpartp->part_pieces == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->parts = list_array_create(64);
if (mpartp->parts == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
// Copy the boundary and convert it to lowercase
mpartp->boundary_len = strlen(boundary) + 4 + 1;
mpartp->boundary = malloc(mpartp->boundary_len + 1);
if (mpartp->boundary == NULL) {
htp_mpartp_destroy(&mpartp);
return NULL;
}
mpartp->boundary[0] = CR;
mpartp->boundary[1] = LF;
mpartp->boundary[2] = '-';
mpartp->boundary[3] = '-';
size_t i = 4;
while (i < mpartp->boundary_len) {
mpartp->boundary[i] = tolower((int) ((unsigned char) boundary[i - 4]));
i++;
}
mpartp->state = MULTIPART_STATE_BOUNDARY;
mpartp->bpos = 2;
mpartp->extract_limit = MULTIPART_DEFAULT_FILE_EXTRACT_LIMIT;
mpartp->handle_data = htp_mpartp_handle_data;
mpartp->handle_boundary = htp_mpartp_handle_boundary;
return mpartp;
}
/**
* Creates a new URLENCODED parser.
*
* @return New parser, or NULL on memory allocation failure.
*/
htp_urlenp_t *htp_urlenp_create(htp_tx_t *tx) {
htp_urlenp_t *urlenp = calloc(1, sizeof (htp_urlenp_t));
if (urlenp == NULL) return NULL;
urlenp->tx = tx;
urlenp->params = table_create(HTP_URLENP_DEFAULT_PARAMS_SIZE);
if (urlenp->params == NULL) {
free(urlenp);
return NULL;
}
urlenp->_bb = bstr_builder_create();
if (urlenp->_bb == NULL) {
table_destroy(&urlenp->params);
free(urlenp);
return NULL;
}
urlenp->argument_separator = '&';
urlenp->decode_url_encoding = 1;
urlenp->_state = HTP_URLENP_STATE_KEY;
return urlenp;
}
TEST(BstrBuilder, Append) {
bstr_builder_t *bb = bstr_builder_create();
bstr *str1 = bstr_dup_c("0123456789");
bstr *str2 = bstr_dup_c("abcdefghijklmnopqrstuvwxyz");
EXPECT_EQ(0, bstr_builder_size(bb));
bstr_builder_appendn(bb, str1);
bstr_builder_append_c(bb, "#");
bstr_builder_appendn(bb, str2);
bstr_builder_append_c(bb, "#");
bstr_builder_append_mem(bb, "!@#$%^&*()", 4);
EXPECT_EQ(5, bstr_builder_size(bb));
bstr *result = bstr_builder_to_str(bb);
EXPECT_EQ(42, bstr_len(result));
EXPECT_EQ(0, memcmp("0123456789#abcdefghijklmnopqrstuvwxyz#!@#$",
bstr_ptr(result),42));
bstr_free(result);
bstr_builder_clear(bb);
EXPECT_EQ(0, bstr_builder_size(bb));
bstr_builder_destroy(bb);
}
TEST(BstrBuilder, CreateDestroy) {
bstr_builder_t *bb = bstr_builder_create();
EXPECT_EQ(0, bstr_builder_size(bb));
bstr_builder_append_c(bb, "ABC");
bstr_builder_destroy(bb);
}
/**
* Transcode one bstr.
*
* @param[in] cd
* @param[in] input
* @param[in] output
*/
int htp_transcode_bstr(iconv_t cd, bstr *input, bstr **output) {
// Reset conversion state for every new string
iconv(cd, NULL, 0, NULL, 0);
bstr_builder_t *bb = NULL;
const size_t buflen = 10;
unsigned char *buf = malloc(buflen);
if (buf == NULL) {
return HTP_ERROR;
}
const char *inbuf = (const char *)bstr_ptr(input);
size_t inleft = bstr_len(input);
char *outbuf = (char *)buf;
size_t outleft = buflen;
int loop = 1;
while (loop) {
loop = 0;
if (iconv(cd, (ICONV_CONST char **)&inbuf, &inleft, (char **)&outbuf, &outleft) == (size_t) - 1) {
if (errno == E2BIG) {
// Create bstr builder on-demand
if (bb == NULL) {
bb = bstr_builder_create();
if (bb == NULL) {
free(buf);
return HTP_ERROR;
}
}
// The output buffer is full
bstr_builder_append_mem(bb, buf, buflen - outleft);
outbuf = (char *)buf;
outleft = buflen;
// Continue in the loop, as there's more work to do
loop = 1;
} else {
// Error
if (bb != NULL) bstr_builder_destroy(bb);
free(buf);
return HTP_ERROR;
}
}
}
if (bb != NULL) {
bstr_builder_append_mem(bb, buf, buflen - outleft);
*output = bstr_builder_to_str(bb);
bstr_builder_destroy(bb);
if (*output == NULL) {
free(buf);
return HTP_ERROR;
}
} else {
*output = bstr_dup_mem(buf, buflen - outleft);
if (*output == NULL) {
free(buf);
return HTP_ERROR;
}
}
free(buf);
return HTP_OK;
}