Decodes an incoming authority claim into the same canonical form used for locally generated records. SRV names are uncompressed before comparison.
| 916 | // Decodes an incoming authority claim into the same canonical form used for |
| 917 | // locally generated records. SRV names are uncompressed before comparison. |
| 918 | static bool DecodeIncomingProbeRecord(const uint8_t* data, uint32_t size, uint16_t type, uint16_t klass, |
| 919 | uint32_t rdata_offset, uint16_t rdlength, ProbeRecord* record) |
| 920 | { |
| 921 | memset(record, 0, sizeof(*record)); |
| 922 | record->m_Type = type; |
| 923 | record->m_Class = klass; |
| 924 | |
| 925 | if (rdlength > sizeof(record->m_RData)) |
| 926 | return false; |
| 927 | |
| 928 | memcpy(record->m_RData, data + rdata_offset, rdlength); |
| 929 | record->m_RDataLength = rdlength; |
| 930 | |
| 931 | if (type == DNS_TYPE_SRV) |
| 932 | { |
| 933 | uint32_t parse_offset = rdata_offset; |
| 934 | uint16_t priority = 0; |
| 935 | uint16_t weight = 0; |
| 936 | uint16_t port = 0; |
| 937 | char target[256]; |
| 938 | uint32_t canonical_offset = 0; |
| 939 | if (!ReadU16(data, size, &parse_offset, &priority) |
| 940 | || !ReadU16(data, size, &parse_offset, &weight) |
| 941 | || !ReadU16(data, size, &parse_offset, &port) |
| 942 | || !ReadName(data, size, &parse_offset, target, sizeof(target)) |
| 943 | || !WriteU16(record->m_RData, sizeof(record->m_RData), &canonical_offset, priority) |
| 944 | || !WriteU16(record->m_RData, sizeof(record->m_RData), &canonical_offset, weight) |
| 945 | || !WriteU16(record->m_RData, sizeof(record->m_RData), &canonical_offset, port) |
| 946 | || !WriteName(record->m_RData, sizeof(record->m_RData), &canonical_offset, target)) |
| 947 | { |
| 948 | return false; |
| 949 | } |
| 950 | record->m_RDataLength = (uint16_t) canonical_offset; |
| 951 | } |
| 952 | |
| 953 | return true; |
| 954 | } |
| 955 | |
| 956 | // Writes a canonical record header plus already-encoded rdata. Probes and |
| 957 | // responses both use this so SRV/TXT bytes are built in one place. |
no test coverage detected