asynciodebian/masterdebian/stretch-backportsproxy-ticketupstream
Last change
on this file since e1c094c was
9e56602,
checked in by Thomas Klute <thomas2.klute@…>, 5 years ago
|
Check for write errors in pgpcrc.c to get rid of build warning
|
-
Property mode set to
100644
|
File size:
982 bytes
|
Rev | Line | |
---|
[d70dd6e] | 1 | #include <unistd.h> |
---|
| 2 | #include <arpa/inet.h> |
---|
[9e56602] | 3 | #include <stdio.h> |
---|
| 4 | #include <errno.h> |
---|
[d70dd6e] | 5 | |
---|
| 6 | /* from RFC 4880 section 6.1 */ |
---|
| 7 | #define CRC24_INIT 0xB704CEL |
---|
| 8 | #define CRC24_POLY 0x1864CFBL |
---|
| 9 | |
---|
| 10 | typedef long crc24; |
---|
| 11 | crc24 crc_octets(unsigned char *octets, size_t len) |
---|
| 12 | { |
---|
| 13 | crc24 crc = CRC24_INIT; |
---|
| 14 | int i; |
---|
| 15 | while (len--) { |
---|
| 16 | crc ^= (*octets++) << 16; |
---|
| 17 | for (i = 0; i < 8; i++) { |
---|
| 18 | crc <<= 1; |
---|
| 19 | if (crc & 0x1000000) |
---|
| 20 | crc ^= CRC24_POLY; |
---|
| 21 | } |
---|
| 22 | } |
---|
| 23 | return crc & 0xFFFFFFL; |
---|
| 24 | } |
---|
| 25 | |
---|
| 26 | |
---|
| 27 | int main() |
---|
| 28 | { |
---|
| 29 | crc24 output; |
---|
| 30 | int i = 0; |
---|
| 31 | unsigned char o; |
---|
| 32 | unsigned char indata[100000]; |
---|
| 33 | ssize_t rr = read(0, indata, sizeof(indata)); |
---|
[9e56602] | 34 | if (rr <= 0) { |
---|
| 35 | perror("pgpcrc read"); |
---|
[d70dd6e] | 36 | return 1; |
---|
[9e56602] | 37 | } |
---|
[d70dd6e] | 38 | output = crc_octets(indata, rr); |
---|
| 39 | for (i = 2; i >= 0; i--) { |
---|
| 40 | o = ((output >> (8 * i)) & 0xff); |
---|
[9e56602] | 41 | if (write(1, &o, sizeof(o)) < 0) { |
---|
| 42 | perror("pgpcrc write"); |
---|
| 43 | return 2; |
---|
| 44 | } |
---|
[d70dd6e] | 45 | } |
---|
| 46 | return 0; |
---|
| 47 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.