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esp_http_client: fix truncated headers

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Signed-off-by: yuanjm <yuanjianmin@espressif.com>

Merges https://github.com/espressif/esp-idf/pull/6370
This commit is contained in:
Clickau 2021-01-07 13:47:22 +02:00 committed by bot
parent 0ff2e22674
commit e662ecb957
3 changed files with 65 additions and 13 deletions
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41
components/esp_http_client/esp_http_client.c
View File

@ -199,7 +199,19 @@ static int http_on_status(http_parser *parser, const char *at, size_t length)
static int http_on_header_field(http_parser *parser, const char *at, size_t length)
{
esp_http_client_t *client = parser->data;
http_utils_assign_string(&client->current_header_key, at, length);
if (client->current_header_key != NULL && client->current_header_value != NULL) {
ESP_LOGD(TAG, "HEADER=%s:%s", client->current_header_key, client->current_header_value);
client->event.header_key = client->current_header_key;
client->event.header_value = client->current_header_value;
http_dispatch_event(client, HTTP_EVENT_ON_HEADER, NULL, 0);
free(client->current_header_key);
free(client->current_header_value);
client->current_header_key = NULL;
client->current_header_value = NULL;
}
http_utils_append_string(&client->current_header_key, at, length);
return 0;
}
@ -211,29 +223,32 @@ static int http_on_header_value(http_parser *parser, const char *at, size_t leng
return 0;
}
if (strcasecmp(client->current_header_key, "Location") == 0) {
http_utils_assign_string(&client->location, at, length);
http_utils_append_string(&client->location, at, length);
} else if (strcasecmp(client->current_header_key, "Transfer-Encoding") == 0
&& memcmp(at, "chunked", length) == 0) {
client->response->is_chunked = true;
} else if (strcasecmp(client->current_header_key, "WWW-Authenticate") == 0) {
http_utils_assign_string(&client->auth_header, at, length);
http_utils_append_string(&client->auth_header, at, length);
}
http_utils_assign_string(&client->current_header_value, at, length);
ESP_LOGD(TAG, "HEADER=%s:%s", client->current_header_key, client->current_header_value);
client->event.header_key = client->current_header_key;
client->event.header_value = client->current_header_value;
http_dispatch_event(client, HTTP_EVENT_ON_HEADER, NULL, 0);
free(client->current_header_key);
free(client->current_header_value);
client->current_header_key = NULL;
client->current_header_value = NULL;
http_utils_append_string(&client->current_header_value, at, length);
return 0;
}
static int http_on_headers_complete(http_parser *parser)
{
esp_http_client_handle_t client = parser->data;
if (client->current_header_key != NULL && client->current_header_value != NULL) {
ESP_LOGD(TAG, "HEADER=%s:%s", client->current_header_key, client->current_header_value);
client->event.header_key = client->current_header_key;
client->event.header_value = client->current_header_value;
http_dispatch_event(client, HTTP_EVENT_ON_HEADER, NULL, 0);
free(client->current_header_key);
free(client->current_header_value);
client->current_header_key = NULL;
client->current_header_value = NULL;
}
client->response->status_code = parser->status_code;
client->response->data_offset = parser->nread;
client->response->content_length = parser->content_length;

24
components/esp_http_client/lib/http_utils.c
View File

@ -61,6 +61,30 @@ char *http_utils_assign_string(char **str, const char *new_str, int len)
return old_str;
}
char *http_utils_append_string(char **str, const char *new_str, int len)
{
if (new_str == NULL) {
return NULL;
}
char *old_str = *str;
if (len <= 0) {
len = strlen(new_str);
}
if (old_str) {
int old_len = strlen(old_str);
old_str = realloc(old_str, old_len + len + 1);
mem_check(old_str);
memcpy(old_str + old_len, new_str, len);
old_str[old_len + len] = 0;
} else {
old_str = calloc(1, len + 1);
mem_check(old_str);
memcpy(old_str, new_str, len);
}
*str = old_str;
return old_str;
}
void http_utils_trim_whitespace(char **str)
{
char *end, *start;

13
components/esp_http_client/lib/include/http_utils.h
View File

@ -30,6 +30,19 @@
*/
char *http_utils_assign_string(char **str, const char *new_str, int len);
/**
* @brief Realloc *str and append new_str to it, if not NULL; assign new_str to *str pointer if NULL
*
* @param str pointer to string pointer
* @param new_str assign this string to str
* @param len length of string, 0 if new_str is zero terminated
*
* @return
* - new_str pointer
* - NULL
*/
char *http_utils_append_string(char **str, const char *new_str, int len);
/**
* @brief Remove white space at begin and end of string
*