UA_readNumberWithBase: 110| 609|UA_readNumberWithBase(const UA_Byte *buf, size_t buflen, UA_UInt32 *number, UA_Byte base) { 111| 609| UA_assert(buf); ------------------ | | 397| 609|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (111:5): [True: 609, False: 0] ------------------ 112| 609| UA_assert(number); ------------------ | | 397| 609|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (112:5): [True: 609, False: 0] ------------------ 113| 609| u32 n = 0; 114| 609| size_t progress = 0; 115| | /* read numbers until the end or a non-number character appears */ 116| 7.31M| while(progress < buflen) { ------------------ | Branch (116:11): [True: 7.31M, False: 278] ------------------ 117| 7.31M| u8 c = buf[progress]; 118| 7.31M| if(c >= '0' && c <= '9' && c <= '0' + (base-1)) ------------------ | Branch (118:12): [True: 7.31M, False: 214] | Branch (118:24): [True: 7.31M, False: 117] | Branch (118:36): [True: 7.31M, False: 0] ------------------ 119| 7.31M| n = (n * base) + c - '0'; 120| 331| else if(base > 9 && c >= 'a' && c <= 'z' && c <= 'a' + (base-11)) ------------------ | Branch (120:17): [True: 331, False: 0] | Branch (120:29): [True: 67, False: 264] | Branch (120:41): [True: 22, False: 45] | Branch (120:53): [True: 0, False: 22] ------------------ 121| 0| n = (n * base) + c-'a' + 10; 122| 331| else if(base > 9 && c >= 'A' && c <= 'Z' && c <= 'A' + (base-11)) ------------------ | Branch (122:17): [True: 331, False: 0] | Branch (122:29): [True: 89, False: 242] | Branch (122:41): [True: 15, False: 74] | Branch (122:53): [True: 0, False: 15] ------------------ 123| 0| n = (n * base) + c-'A' + 10; 124| 331| else 125| 331| break; 126| 7.31M| ++progress; 127| 7.31M| } 128| 609| *number = n; 129| 609| return progress; 130| 609|} UA_readNumber: 133| 609|UA_readNumber(const UA_Byte *buf, size_t buflen, UA_UInt32 *number) { 134| 609| return UA_readNumberWithBase(buf, buflen, number, 10); 135| 609|} UA_parseEndpointUrl: 146| 520| UA_UInt16 *outPort, UA_String *outPath) { 147| | /* Url must begin with "opc.tcp://" or opc.udp:// (if pubsub enabled) */ 148| 520| if(endpointUrl->length < 11) { ------------------ | Branch (148:8): [True: 6, False: 514] ------------------ 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| 514| unsigned schemaType = 0; 154| 1.36k| for(; schemaType < UA_SCHEMAS_SIZE; schemaType++) { ------------------ | | 137| 1.36k|#define UA_SCHEMAS_SIZE 4 ------------------ | Branch (154:11): [True: 1.26k, False: 97] ------------------ 155| 1.26k| if(strncmp((char*)endpointUrl->data, ------------------ | Branch (155:12): [True: 417, False: 850] ------------------ 156| 1.26k| schemas[schemaType], 157| 1.26k| strlen(schemas[schemaType])) == 0) 158| 417| break; 159| 1.26k| } 160| 514| if(schemaType == UA_SCHEMAS_SIZE) ------------------ | | 137| 514|#define UA_SCHEMAS_SIZE 4 ------------------ | Branch (160:8): [True: 97, False: 417] ------------------ 161| 97| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 97|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 162| | 163| | /* Forward the current position until the first colon or slash */ 164| 417| size_t start = strlen(schemas[schemaType]); 165| 417| size_t curr = start; 166| 417| UA_Boolean ipv6 = false; 167| 417| if(endpointUrl->length > curr && endpointUrl->data[curr] == '[') { ------------------ | Branch (167:8): [True: 416, False: 1] | Branch (167:38): [True: 120, False: 296] ------------------ 168| | /* IPv6: opc.tcp://[2001:0db8:85a3::8a2e:0370:7334]:1234/path */ 169| 9.71M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (169:15): [True: 9.71M, False: 15] ------------------ 170| 9.71M| if(endpointUrl->data[curr] == ']') ------------------ | Branch (170:16): [True: 105, False: 9.71M] ------------------ 171| 105| break; 172| 9.71M| } 173| 120| if(curr == endpointUrl->length) ------------------ | Branch (173:12): [True: 15, False: 105] ------------------ 174| 15| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 15|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 175| 105| curr++; 176| 105| ipv6 = true; 177| 297| } else { 178| | /* IPv4 or hostname: opc.tcp://something.something:1234/path */ 179| 1.18M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (179:15): [True: 1.18M, False: 55] ------------------ 180| 1.18M| if(endpointUrl->data[curr] == ':' || endpointUrl->data[curr] == '/') ------------------ | Branch (180:16): [True: 192, False: 1.18M] | Branch (180:50): [True: 50, False: 1.18M] ------------------ 181| 242| break; 182| 1.18M| } 183| 297| } 184| | 185| | /* Set the hostname */ 186| 402| if(ipv6) { ------------------ | Branch (186:8): [True: 105, False: 297] ------------------ 187| | /* Skip the ipv6 '[]' container for getaddrinfo() later */ 188| 105| outHostname->data = &endpointUrl->data[start+1]; 189| 105| outHostname->length = curr - (start+2); 190| 297| } else { 191| 297| outHostname->data = &endpointUrl->data[start]; 192| 297| outHostname->length = curr - start; 193| 297| } 194| | 195| | /* Empty string? */ 196| 402| if(outHostname->length == 0) ------------------ | Branch (196:8): [True: 227, False: 175] ------------------ 197| 227| outHostname->data = NULL; 198| | 199| | /* Already at the end */ 200| 402| if(curr == endpointUrl->length) ------------------ | Branch (200:8): [True: 93, False: 309] ------------------ 201| 93| return UA_STATUSCODE_GOOD; ------------------ | | 16| 93|#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| 309| if(endpointUrl->data[curr] == ':') { ------------------ | Branch (205:8): [True: 227, False: 82] ------------------ 206| 227| if(++curr == endpointUrl->length) ------------------ | Branch (206:12): [True: 4, False: 223] ------------------ 207| 4| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 4|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 208| | 209| | /* ETH schema */ 210| 223| if(schemaType == UA_ETH_SCHEMA_INDEX) { ------------------ | | 138| 223|#define UA_ETH_SCHEMA_INDEX 2 ------------------ | Branch (210:12): [True: 1, False: 222] ------------------ 211| 1| if(outPath != NULL) { ------------------ | Branch (211:16): [True: 1, False: 0] ------------------ 212| 1| outPath->data = &endpointUrl->data[curr]; 213| 1| outPath->length = endpointUrl->length - curr; 214| 1| } 215| 1| return UA_STATUSCODE_GOOD; ------------------ | | 16| 1|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 216| 1| } 217| | 218| 222| u32 largeNum; 219| 222| size_t progress = UA_readNumber(&endpointUrl->data[curr], 220| 222| endpointUrl->length - curr, &largeNum); 221| 222| if(progress == 0 || largeNum > 65535) ------------------ | Branch (221:12): [True: 53, False: 169] | Branch (221:29): [True: 47, False: 122] ------------------ 222| 100| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 100|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 223| | /* Test if the end of a valid port was reached */ 224| 122| curr += progress; 225| 122| if(curr == endpointUrl->length || endpointUrl->data[curr] == '/') ------------------ | Branch (225:12): [True: 58, False: 64] | Branch (225:43): [True: 19, False: 45] ------------------ 226| 77| *outPort = (u16)largeNum; 227| 122| if(curr == endpointUrl->length) ------------------ | Branch (227:12): [True: 58, False: 64] ------------------ 228| 58| return UA_STATUSCODE_GOOD; ------------------ | | 16| 58|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 229| 122| } 230| | 231| | /* Set the path */ 232| 146| UA_assert(curr < endpointUrl->length); ------------------ | | 397| 146|# define UA_assert(ignore) assert(ignore) ------------------ | Branch (232:5): [True: 146, False: 0] ------------------ 233| 146| if(endpointUrl->data[curr] != '/') ------------------ | Branch (233:8): [True: 74, False: 72] ------------------ 234| 74| return UA_STATUSCODE_BADTCPENDPOINTURLINVALID; ------------------ | | 499| 74|#define UA_STATUSCODE_BADTCPENDPOINTURLINVALID ((UA_StatusCode) 0x80830000) ------------------ 235| 72| if(++curr == endpointUrl->length) ------------------ | Branch (235:8): [True: 9, False: 63] ------------------ 236| 9| return UA_STATUSCODE_GOOD; ------------------ | | 16| 9|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 237| 63| if(outPath != NULL) { ------------------ | Branch (237:8): [True: 63, False: 0] ------------------ 238| 63| outPath->data = &endpointUrl->data[curr]; 239| 63| outPath->length = endpointUrl->length - curr; 240| | 241| | /* Remove trailing slash from the path */ 242| 63| if(endpointUrl->data[endpointUrl->length - 1] == '/') ------------------ | Branch (242:12): [True: 8, False: 55] ------------------ 243| 8| outPath->length--; 244| | 245| | /* Empty string? */ 246| 63| if(outPath->length == 0) ------------------ | Branch (246:12): [True: 8, False: 55] ------------------ 247| 8| outPath->data = NULL; 248| 63| } 249| | 250| 63| return UA_STATUSCODE_GOOD; ------------------ | | 16| 63|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 251| 72|} UA_parseEndpointUrlEthernet: 255| 393| UA_UInt16 *vid, UA_Byte *pcp) { 256| | /* Url must begin with "opc.eth://" */ 257| 393| if(endpointUrl->length < 11) { ------------------ | Branch (257:8): [True: 7, False: 386] ------------------ 258| 7| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 7|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 259| 7| } 260| 386| if(strncmp((char*) endpointUrl->data, "opc.eth://", 10) != 0) { ------------------ | Branch (260:8): [True: 92, False: 294] ------------------ 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| 294| size_t curr = 10; 266| 1.11M| for(; curr < endpointUrl->length; ++curr) { ------------------ | Branch (266:11): [True: 1.11M, False: 19] ------------------ 267| 1.11M| if(endpointUrl->data[curr] == ':') { ------------------ | Branch (267:12): [True: 275, False: 1.11M] ------------------ 268| 275| break; 269| 275| } 270| 1.11M| } 271| | 272| | /* set host address */ 273| 294| target->data = &endpointUrl->data[10]; 274| 294| target->length = curr - 10; 275| 294| if(curr == endpointUrl->length) { ------------------ | Branch (275:8): [True: 19, False: 275] ------------------ 276| 19| return UA_STATUSCODE_GOOD; ------------------ | | 16| 19|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 277| 19| } 278| | 279| | /* Set VLAN */ 280| 275| u32 value = 0; 281| 275| curr++; /* skip ':' */ 282| 275| size_t progress = UA_readNumber(&endpointUrl->data[curr], 283| 275| endpointUrl->length - curr, &value); 284| 275| if(progress == 0 || value > 4096) { ------------------ | Branch (284:8): [True: 34, False: 241] | Branch (284:25): [True: 56, False: 185] ------------------ 285| 90| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 90|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 286| 90| } 287| 185| curr += progress; 288| 185| if(curr == endpointUrl->length || endpointUrl->data[curr] == '.') { ------------------ | Branch (288:8): [True: 33, False: 152] | Branch (288:39): [True: 112, False: 40] ------------------ 289| 145| *vid = (UA_UInt16) value; 290| 145| } 291| 185| if(curr == endpointUrl->length) { ------------------ | Branch (291:8): [True: 33, False: 152] ------------------ 292| 33| return UA_STATUSCODE_GOOD; ------------------ | | 16| 33|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 293| 33| } 294| | 295| | /* Set priority */ 296| 152| if(endpointUrl->data[curr] != '.') { ------------------ | Branch (296:8): [True: 40, False: 112] ------------------ 297| 40| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 40|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 298| 40| } 299| 112| curr++; /* skip '.' */ 300| 112| progress = UA_readNumber(&endpointUrl->data[curr], 301| 112| endpointUrl->length - curr, &value); 302| 112| if(progress == 0 || value > 7) { ------------------ | Branch (302:8): [True: 6, False: 106] | Branch (302:25): [True: 65, False: 41] ------------------ 303| 71| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 71|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 304| 71| } 305| 41| curr += progress; 306| 41| if(curr != endpointUrl->length) { ------------------ | Branch (306:8): [True: 31, False: 10] ------------------ 307| 31| return UA_STATUSCODE_BADINTERNALERROR; ------------------ | | 28| 31|#define UA_STATUSCODE_BADINTERNALERROR ((UA_StatusCode) 0x80020000) ------------------ 308| 31| } 309| 10| *pcp = (UA_Byte) value; 310| | 311| 10| return UA_STATUSCODE_GOOD; ------------------ | | 16| 10|#define UA_STATUSCODE_GOOD ((UA_StatusCode) 0x00000000) ------------------ 312| 41|} UA_memoryManager_setLimitFromLast4Bytes: 161| 920|int UA_memoryManager_setLimitFromLast4Bytes(const uint8_t *data, size_t size) { 162| 920| UA_mallocSingleton = UA_memoryManager_malloc; 163| 920| UA_freeSingleton = UA_memoryManager_free; 164| 920| UA_callocSingleton = UA_memoryManager_calloc; 165| 920| UA_reallocSingleton = UA_memoryManager_realloc; 166| 920| if(size <4) ------------------ | Branch (166:8): [True: 2, False: 918] ------------------ 167| 2| return 0; 168| | // just cast the last 4 bytes to uint32 169| 918| uint32_t limit; 170| 918| memcpy(&limit, &data[size-4], sizeof(uint32_t)); 171| 918| memoryLimit = limit; 172| 918| return 1; 173| 920|} LLVMFuzzerTestOneInput: 42| 920|extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { 43| | 44| 920| if (!UA_memoryManager_setLimitFromLast4Bytes(data, size)) ------------------ | Branch (44:9): [True: 2, False: 918] ------------------ 45| 2| return 0; 46| 918| size -= 4; 47| | 48| 918| if (size == 0) ------------------ | Branch (48:9): [True: 1, False: 917] ------------------ 49| 1| return 0; 50| | 51| | // use first byte to decide which function should be fuzzed 52| | 53| 917| const uint8_t select = data[0]; 54| | 55| 917| const uint8_t *newData = &data[1]; 56| 917| size_t newSize = size-1; 57| | 58| 917| switch(select) { 59| 520| case 0: ------------------ | Branch (59:9): [True: 520, False: 397] ------------------ 60| 520| return tortureParseEndpointUrl(newData, newSize); 61| 393| case 1: ------------------ | Branch (61:9): [True: 393, False: 524] ------------------ 62| 393| return tortureParseEndpointUrlEthernet(newData, newSize); 63| 4| default: ------------------ | Branch (63:9): [True: 4, False: 913] ------------------ 64| 4| return 0; 65| 917| } 66| | 67| 917|} fuzz_src_ua_util.cc:_ZL23tortureParseEndpointUrlPKhm: 14| 520|static int tortureParseEndpointUrl(const uint8_t *data, size_t size) { 15| 520| const UA_String endpointUrl = { 16| 520| size, (UA_Byte* )(void*)data 17| 520| }; 18| | 19| 520| UA_String hostname; 20| 520| UA_UInt16 port; 21| 520| UA_String path; 22| 520| UA_parseEndpointUrl(&endpointUrl, &hostname, &port, &path); 23| 520| return 0; 24| 520|} fuzz_src_ua_util.cc:_ZL31tortureParseEndpointUrlEthernetPKhm: 26| 393|static int tortureParseEndpointUrlEthernet(const uint8_t *data, size_t size) { 27| 393| const UA_String endpointUrl = { 28| 393| size, (UA_Byte* )(void*)data 29| 393| }; 30| | 31| 393| UA_String target; 32| 393| UA_UInt16 vid; 33| 393| UA_Byte prid; 34| 393| UA_parseEndpointUrlEthernet(&endpointUrl, &target, &vid, &prid); 35| 393| return 0; 36| 393|}