| 51 | } |
| 52 | |
| 53 | size_t bigsize_get(const u8 *p, size_t max, bigsize_t *val) |
| 54 | { |
| 55 | if (max < 1) { |
| 56 | SUPERVERBOSE("EOF"); |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | switch (*p) { |
| 61 | case 0xfd: |
| 62 | if (max < 3) { |
| 63 | SUPERVERBOSE("unexpected EOF"); |
| 64 | return 0; |
| 65 | } |
| 66 | *val = ((u64)p[1] << 8) + p[2]; |
| 67 | if (*val < 0xfd) { |
| 68 | SUPERVERBOSE("decoded bigsize is not canonical"); |
| 69 | return 0; |
| 70 | } |
| 71 | return 3; |
| 72 | case 0xfe: |
| 73 | if (max < 5) { |
| 74 | SUPERVERBOSE("unexpected EOF"); |
| 75 | return 0; |
| 76 | } |
| 77 | *val = ((u64)p[1] << 24) + ((u64)p[2] << 16) |
| 78 | + ((u64)p[3] << 8) + p[4]; |
| 79 | if ((*val >> 16) == 0) { |
| 80 | SUPERVERBOSE("decoded bigsize is not canonical"); |
| 81 | return 0; |
| 82 | } |
| 83 | return 5; |
| 84 | case 0xff: |
| 85 | if (max < 9) { |
| 86 | SUPERVERBOSE("unexpected EOF"); |
| 87 | return 0; |
| 88 | } |
| 89 | *val = ((u64)p[1] << 56) + ((u64)p[2] << 48) |
| 90 | + ((u64)p[3] << 40) + ((u64)p[4] << 32) |
| 91 | + ((u64)p[5] << 24) + ((u64)p[6] << 16) |
| 92 | + ((u64)p[7] << 8) + p[8]; |
| 93 | if ((*val >> 32) == 0) { |
| 94 | SUPERVERBOSE("decoded bigsize is not canonical"); |
| 95 | return 0; |
| 96 | } |
| 97 | return 9; |
| 98 | default: |
| 99 | *val = *p; |
| 100 | return 1; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | bigsize_t fromwire_bigsize(const u8 **cursor, size_t *max) |
| 105 | { |
no outgoing calls
no test coverage detected