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lwip fuzzer: supplied dummy dns server entry to work with internal packet processing functionwhich is exercised in fuzzer tests, disable CTYPE as recent newlib is not compatible with AFL

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This commit is contained in:
David Cermak 2019-06-28 14:12:10 +02:00
parent 785e711561
commit ffca1825e6
3 changed files with 4 additions and 2 deletions
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2
components/lwip/test_afl_host/Makefile
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@ -1,6 +1,6 @@
COMPONENTS_DIR=../..
CFLAGS=-std=gnu99 -Og -ggdb -ffunction-sections -fdata-sections -nostdlib -Wall -Werror=all -Wno-int-to-pointer-cast -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra \
-Wno-unused-parameter -Wno-sign-compare -Wno-address -Wno-unused-variable -DESP_PLATFORM -D IDF_VER=\"v3.1\" -MMD -MP -DWITH_POSIX
-Wno-unused-parameter -Wno-sign-compare -Wno-address -Wno-unused-variable -DESP_PLATFORM -D IDF_VER=\"v3.1\" -MMD -MP -DWITH_POSIX -DLWIP_NO_CTYPE_H=1
INC_DIRS=-I . -I ./build/config -I $(COMPONENTS_DIR)/newlib/platform_include -I $(COMPONENTS_DIR)/newlib/include -I $(COMPONENTS_DIR)/driver/include -I $(COMPONENTS_DIR)/esp32/include -I $(COMPONENTS_DIR)/ethernet/include -I $(COMPONENTS_DIR)/freertos/include -I $(COMPONENTS_DIR)/heap/include -I $(COMPONENTS_DIR)/lwip/lwip/src/include -I $(COMPONENTS_DIR)/lwip/include/apps -I $(COMPONENTS_DIR)/lwip/lwip/src/include/netif -I $(COMPONENTS_DIR)/lwip/lwip/src/include/posix -I $(COMPONENTS_DIR)/lwip/port/esp32/include -I $(COMPONENTS_DIR)/lwip/lwip/src/include/posix -I $(COMPONENTS_DIR)/lwip/include/apps/ping -I $(COMPONENTS_DIR)/lwip/include/apps/sntp -I $(COMPONENTS_DIR)/soc/esp32/include -I $(COMPONENTS_DIR)/soc/include -I $(COMPONENTS_DIR)/tcpip_adapter/include -I $(COMPONENTS_DIR)/esp_rom/include -I $(COMPONENTS_DIR)/esp_common/include -I $(COMPONENTS_DIR)/xtensa/include -I $(COMPONENTS_DIR)/xtensa/esp32/include -I $(COMPONENTS_DIR)/esp_wifi/include -I $(COMPONENTS_DIR)/esp_event/include
TEST_NAME=test
FUZZ=afl-fuzz

2
components/lwip/test_afl_host/network_mock.c
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@ -94,7 +94,7 @@ struct pbuf * pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)
p = (struct pbuf *)malloc(MEMP_PBUF_POOL);
p->tot_len = length;
p->next = NULL;
p->type = PBUF_POOL;
p->type_internal = PBUF_POOL;
p->len = length;
p->payload = malloc(length);
return p;

2
components/lwip/test_afl_host/test_dns.c
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@ -66,6 +66,8 @@ int main(int argc, char** argv)
p->next = NULL;
// Pretend that the response is from our pending querries
IP4_ADDR(&server_ip, 8, 8, 8, 8);
dns_setserver(0, &server_ip);
dns_test_inject_port_and_txid(1024, (buf[0]<<8) + buf[1]);
dns_test_dns_enqueue("test", 4, NULL, NULL, 0);