UA_readNumberWithBase: 110| 588|UA_readNumberWithBase(const UA_Byte *buf, size_t buflen, UA_UInt32 *number, UA_Byte base) { 111| 588| UA_assert(buf); ------------------ | | 395| 588|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (111:5): [True: 588, False: 0] ------------------ 112| 588| UA_assert(number); ------------------ | | 395| 588|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (112:5): [True: 588, False: 0] ------------------ 113| 588| u32 n = 0; 114| 588| size_t progress = 0; 115| | /* read numbers until the end or a non-number character appears */ 116| 7.90M| while(progress < buflen) { ------------------ | Branch (116:11): [True: 7.90M, False: 280] ------------------ 117| 7.90M| u8 c = buf[progress]; 118| 7.90M| if(c >= '0' && c <= '9' && c <= '0' + (base-1)) ------------------ | Branch (118:12): [True: 7.90M, False: 202] | Branch (118:24): [True: 7.90M, False: 106] | Branch (118:36): [True: 7.90M, False: 0] ------------------ 119| 7.90M| n = (n * base) + c - '0'; 120| 308| else if(base > 9 && c >= 'a' && c <= 'z' && c <= 'a' + (base-11)) ------------------ | Branch (120:17): [True: 308, False: 0] | Branch (120:29): [True: 68, False: 240] | Branch (120:41): [True: 19, False: 49] | Branch (120:53): [True: 0, False: 19] ------------------ 121| 0| n = (n * base) + c-'a' + 10; 122| 308| else if(base > 9 && c >= 'A' && c <= 'Z' && c <= 'A' + (base-11)) ------------------ | Branch (122:17): [True: 308, False: 0] | Branch (122:29): [True: 84, False: 224] | Branch (122:41): [True: 8, False: 76] | Branch (122:53): [True: 0, False: 8] ------------------ 123| 0| n = (n * base) + c-'A' + 10; 124| 308| else 125| 308| break; 126| 7.90M| ++progress; 127| 7.90M| } 128| 588| *number = n; 129| 588| return progress; 130| 588|} UA_readNumber: 133| 588|UA_readNumber(const UA_Byte *buf, size_t buflen, UA_UInt32 *number) { 134| 588| return UA_readNumberWithBase(buf, buflen, number, 10); 135| 588|} UA_parseEndpointUrl: 146| 512| UA_UInt16 *outPort, UA_String *outPath) { 147| | /* Url must begin with "opc.tcp://" or opc.udp:// (if pubsub enabled) */ 148| 512| if(endpointUrl->length < 11) { ------------------ | Branch (148:8): [True: 6, False: 506] ------------------ 149| 6| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 6|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 150| 6| } 151| | 152| | /* Which type of schema is this? */ 153| 506| unsigned schemaType = 0; 154| 1.33k| for(; schemaType < UA_SCHEMAS_SIZE; schemaType++) { ------------------ | | 137| 1.33k|#define UA_SCHEMAS_SIZE 4 ------------------ | Branch (154:11): [True: 1.24k, False: 95] ------------------ 155| 1.24k| if(strncmp((char*)endpointUrl->data, ------------------ | Branch (155:12): [True: 411, False: 830] ------------------ 156| 1.24k| schemas[schemaType], 157| 1.24k| strlen(schemas[schemaType])) == 0) 158| 411| break; 159| 1.24k| } 160| 506| if(schemaType == UA_SCHEMAS_SIZE) ------------------ | | 137| 506|#define UA_SCHEMAS_SIZE 4 ------------------ | Branch (160:8): [True: 95, False: 411] ------------------ 161| 95| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 95|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 162| | 163| | /* Forward the current position until the first colon or slash */ 164| 411| size_t start = strlen(schemas[schemaType]); 165| 411| size_t curr = start; 166| 411| UA_Boolean ipv6 = false; 167| 411| if(endpointUrl->length > curr && endpointUrl->data[curr] == '[') { ------------------ | Branch (167:8): [True: 410, False: 1] | Branch (167:38): [True: 124, False: 286] ------------------ 168| | /* IPv6: opc.tcp://[2001:0db8:85a3::8a2e:0370:7334]:1234/path */ 169| 8.82M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (169:15): [True: 8.82M, False: 17] ------------------ 170| 8.82M| if(endpointUrl->data[curr] == ']') ------------------ | Branch (170:16): [True: 107, False: 8.82M] ------------------ 171| 107| break; 172| 8.82M| } 173| 124| if(curr == endpointUrl->length) ------------------ | Branch (173:12): [True: 17, False: 107] ------------------ 174| 17| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 17|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 175| 107| curr++; 176| 107| ipv6 = true; 177| 287| } else { 178| | /* IPv4 or hostname: opc.tcp://something.something:1234/path */ 179| 1.05M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (179:15): [True: 1.05M, False: 52] ------------------ 180| 1.05M| if(endpointUrl->data[curr] == ':' || endpointUrl->data[curr] == '/') ------------------ | Branch (180:16): [True: 179, False: 1.05M] | Branch (180:50): [True: 56, False: 1.05M] ------------------ 181| 235| break; 182| 1.05M| } 183| 287| } 184| | 185| | /* Set the hostname */ 186| 394| if(ipv6) { ------------------ | Branch (186:8): [True: 107, False: 287] ------------------ 187| | /* Skip the ipv6 '[]' container for getaddrinfo() later */ 188| 107| outHostname->data = &endpointUrl->data[start+1]; 189| 107| outHostname->length = curr - (start+2); 190| 287| } else { 191| 287| outHostname->data = &endpointUrl->data[start]; 192| 287| outHostname->length = curr - start; 193| 287| } 194| | 195| | /* Empty string? */ 196| 394| if(outHostname->length == 0) ------------------ | Branch (196:8): [True: 218, False: 176] ------------------ 197| 218| outHostname->data = NULL; 198| | 199| | /* Already at the end */ 200| 394| if(curr == endpointUrl->length) ------------------ | Branch (200:8): [True: 94, False: 300] ------------------ 201| 94| return UA_STATUSCODE_GOOD; ------------------ | | 16| 94|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 202| | 203| | /* Set the port - and for ETH set the VID.PCP postfix in the outpath string. 204| | * We have to parse that externally. */ 205| 300| if(endpointUrl->data[curr] == ':') { ------------------ | Branch (205:8): [True: 211, False: 89] ------------------ 206| 211| if(++curr == endpointUrl->length) ------------------ | Branch (206:12): [True: 3, False: 208] ------------------ 207| 3| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 3|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 208| | 209| | /* ETH schema */ 210| 208| if(schemaType == UA_ETH_SCHEMA_INDEX) { ------------------ | | 138| 208|#define UA_ETH_SCHEMA_INDEX 2 ------------------ | Branch (210:12): [True: 2, False: 206] ------------------ 211| 2| if(outPath != NULL) { ------------------ | Branch (211:16): [True: 2, False: 0] ------------------ 212| 2| outPath->data = &endpointUrl->data[curr]; 213| 2| outPath->length = endpointUrl->length - curr; 214| 2| } 215| 2| return UA_STATUSCODE_GOOD; ------------------ | | 16| 2|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 216| 2| } 217| | 218| 206| u32 largeNum; 219| 206| size_t progress = UA_readNumber(&endpointUrl->data[curr], 220| 206| endpointUrl->length - curr, &largeNum); 221| 206| if(progress == 0 || largeNum > 65535) ------------------ | Branch (221:12): [True: 49, False: 157] | Branch (221:29): [True: 44, False: 113] ------------------ 222| 93| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 93|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 223| | /* Test if the end of a valid port was reached */ 224| 113| curr += progress; 225| 113| if(curr == endpointUrl->length || endpointUrl->data[curr] == '/') ------------------ | Branch (225:12): [True: 59, False: 54] | Branch (225:43): [True: 12, False: 42] ------------------ 226| 71| *outPort = (u16)largeNum; 227| 113| if(curr == endpointUrl->length) ------------------ | Branch (227:12): [True: 59, False: 54] ------------------ 228| 59| return UA_STATUSCODE_GOOD; ------------------ | | 16| 59|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 229| 113| } 230| | 231| | /* Set the path */ 232| 143| UA_assert(curr < endpointUrl->length); ------------------ | | 395| 143|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (232:5): [True: 143, False: 0] ------------------ 233| 143| if(endpointUrl->data[curr] != '/') ------------------ | Branch (233:8): [True: 73, False: 70] ------------------ 234| 73| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 73|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 235| 70| if(++curr == endpointUrl->length) ------------------ | Branch (235:8): [True: 5, False: 65] ------------------ 236| 5| return UA_STATUSCODE_GOOD; ------------------ | | 16| 5|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 237| 65| if(outPath != NULL) { ------------------ | Branch (237:8): [True: 65, False: 0] ------------------ 238| 65| outPath->data = &endpointUrl->data[curr]; 239| 65| outPath->length = endpointUrl->length - curr; 240| | 241| | /* Remove trailing slash from the path */ 242| 65| if(endpointUrl->data[endpointUrl->length - 1] == '/') ------------------ | Branch (242:12): [True: 8, False: 57] ------------------ 243| 8| outPath->length--; 244| | 245| | /* Empty string? */ 246| 65| if(outPath->length == 0) ------------------ | Branch (246:12): [True: 8, False: 57] ------------------ 247| 8| outPath->data = NULL; 248| 65| } 249| | 250| 65| return UA_STATUSCODE_GOOD; ------------------ | | 16| 65|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 251| 70|} UA_parseEndpointUrlEthernet: 255| 387| UA_UInt16 *vid, UA_Byte *pcp) { 256| | /* Url must begin with "opc.eth://" */ 257| 387| if(endpointUrl->length < 11) { ------------------ | Branch (257:8): [True: 7, False: 380] ------------------ 258| 7| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 7|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 259| 7| } 260| 380| if(strncmp((char*) endpointUrl->data, "opc.eth://", 10) != 0) { ------------------ | Branch (260:8): [True: 92, False: 288] ------------------ 261| 92| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 92|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 262| 92| } 263| | 264| | /* Where does the host address end? */ 265| 288| size_t curr = 10; 266| 1.10M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (266:11): [True: 1.10M, False: 17] ------------------ 267| 1.10M| if(endpointUrl->data[curr] == ':') { ------------------ | Branch (267:12): [True: 271, False: 1.10M] ------------------ 268| 271| break; 269| 271| } 270| 1.10M| } 271| | 272| | /* set host address */ 273| 288| target->data = &endpointUrl->data[10]; 274| 288| target->length = curr - 10; 275| 288| if(curr == endpointUrl->length) { ------------------ | Branch (275:8): [True: 17, False: 271] ------------------ 276| 17| return UA_STATUSCODE_GOOD; ------------------ | | 16| 17|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 277| 17| } 278| | 279| | /* Set VLAN */ 280| 271| u32 value = 0; 281| 271| curr++; /* skip ':' */ 282| 271| size_t progress = UA_readNumber(&endpointUrl->data[curr], 283| 271| endpointUrl->length - curr, &value); 284| 271| if(progress == 0 || value > 4096) { ------------------ | Branch (284:8): [True: 30, False: 241] | Branch (284:25): [True: 55, False: 186] ------------------ 285| 85| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 85|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 286| 85| } 287| 186| curr += progress; 288| 186| if(curr == endpointUrl->length || endpointUrl->data[curr] == '.') { ------------------ | Branch (288:8): [True: 37, False: 149] | Branch (288:39): [True: 111, False: 38] ------------------ 289| 148| *vid = (UA_UInt16) value; 290| 148| } 291| 186| if(curr == endpointUrl->length) { ------------------ | Branch (291:8): [True: 37, False: 149] ------------------ 292| 37| return UA_STATUSCODE_GOOD; ------------------ | | 16| 37|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 293| 37| } 294| | 295| | /* Set priority */ 296| 149| if(endpointUrl->data[curr] != '.') { ------------------ | Branch (296:8): [True: 38, False: 111] ------------------ 297| 38| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 38|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 298| 38| } 299| 111| curr++; /* skip '.' */ 300| 111| progress = UA_readNumber(&endpointUrl->data[curr], 301| 111| endpointUrl->length - curr, &value); 302| 111| if(progress == 0 || value > 7) { ------------------ | Branch (302:8): [True: 5, False: 106] | Branch (302:25): [True: 67, False: 39] ------------------ 303| 72| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 72|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 304| 72| } 305| 39| curr += progress; 306| 39| if(curr != endpointUrl->length) { ------------------ | Branch (306:8): [True: 30, False: 9] ------------------ 307| 30| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 30|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 308| 30| } 309| 9| *pcp = (UA_Byte) value; 310| | 311| 9| return UA_STATUSCODE_GOOD; ------------------ | | 16| 9|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 312| 39|} UA_memoryManager_setLimitFromLast4Bytes: 161| 905|int UA_memoryManager_setLimitFromLast4Bytes(const uint8_t *data, size_t size) { 162| 905| UA_mallocSingleton = UA_memoryManager_malloc; 163| 905| UA_freeSingleton = UA_memoryManager_free; 164| 905| UA_callocSingleton = UA_memoryManager_calloc; 165| 905| UA_reallocSingleton = UA_memoryManager_realloc; 166| 905| if(size <4) ------------------ | Branch (166:8): [True: 2, False: 903] ------------------ 167| 2| return 0; 168| | // just cast the last 4 bytes to uint32 169| 903| uint32_t limit; 170| 903| memcpy(&limit, &data[size-4], sizeof(uint32_t)); 171| 903| memoryLimit = limit; 172| 903| return 1; 173| 905|} LLVMFuzzerTestOneInput: 42| 905|extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { 43| | 44| 905| if (!UA_memoryManager_setLimitFromLast4Bytes(data, size)) ------------------ | Branch (44:9): [True: 2, False: 903] ------------------ 45| 2| return 0; 46| 903| size -= 4; 47| | 48| 903| if (size == 0) ------------------ | Branch (48:9): [True: 1, False: 902] ------------------ 49| 1| return 0; 50| | 51| | // use first byte to decide which function should be fuzzed 52| | 53| 902| const uint8_t select = data[0]; 54| | 55| 902| const uint8_t *newData = &data[1]; 56| 902| size_t newSize = size-1; 57| | 58| 902| switch(select) { 59| 512| case 0: ------------------ | Branch (59:9): [True: 512, False: 390] ------------------ 60| 512| return tortureParseEndpointUrl(newData, newSize); 61| 387| case 1: ------------------ | Branch (61:9): [True: 387, False: 515] ------------------ 62| 387| return tortureParseEndpointUrlEthernet(newData, newSize); 63| 3| default: ------------------ | Branch (63:9): [True: 3, False: 899] ------------------ 64| 3| return 0; 65| 902| } 66| | 67| 902|} fuzz_src_ua_util.cc:_ZL23tortureParseEndpointUrlPKhm: 14| 512|static int tortureParseEndpointUrl(const uint8_t *data, size_t size) { 15| 512| const UA_String endpointUrl = { 16| 512| size, (UA_Byte* )(void*)data 17| 512| }; 18| | 19| 512| UA_String hostname; 20| 512| UA_UInt16 port; 21| 512| UA_String path; 22| 512| UA_parseEndpointUrl(&endpointUrl, &hostname, &port, &path); 23| 512| return 0; 24| 512|} fuzz_src_ua_util.cc:_ZL31tortureParseEndpointUrlEthernetPKhm: 26| 387|static int tortureParseEndpointUrlEthernet(const uint8_t *data, size_t size) { 27| 387| const UA_String endpointUrl = { 28| 387| size, (UA_Byte* )(void*)data 29| 387| }; 30| | 31| 387| UA_String target; 32| 387| UA_UInt16 vid; 33| 387| UA_Byte prid; 34| 387| UA_parseEndpointUrlEthernet(&endpointUrl, &target, &vid, &prid); 35| 387| return 0; 36| 387|}