| rsc | 056fe1b | 2003-11-23 18:19:58 +0000 | [diff] [blame] | 1 | #include <u.h> |
| 2 | #include <libc.h> |
| 3 | #include <venti.h> |
| 4 | |
| 5 | int |
| 6 | vtputstring(Packet *p, char *s) |
| 7 | { |
| 8 | uchar buf[2]; |
| 9 | int n; |
| 10 | |
| 11 | if(s == nil){ |
| 12 | werrstr("null string in packet"); |
| 13 | return -1; |
| 14 | } |
| 15 | n = strlen(s); |
| 16 | if(n > VtMaxStringSize){ |
| 17 | werrstr("string too long in packet"); |
| 18 | return -1; |
| 19 | } |
| 20 | buf[0] = n>>8; |
| 21 | buf[1] = n; |
| 22 | packetappend(p, buf, 2); |
| 23 | packetappend(p, (uchar*)s, n); |
| 24 | return 0; |
| 25 | } |
| 26 | |
| 27 | int |
| 28 | vtgetstring(Packet *p, char **ps) |
| 29 | { |
| 30 | uchar buf[2]; |
| 31 | int n; |
| 32 | char *s; |
| 33 | |
| 34 | if(packetconsume(p, buf, 2) < 0) |
| 35 | return -1; |
| 36 | n = (buf[0]<<8) + buf[1]; |
| 37 | if(n > VtMaxStringSize) { |
| 38 | werrstr("string too long in packet"); |
| 39 | return -1; |
| 40 | } |
| 41 | s = vtmalloc(n+1); |
| 42 | if(packetconsume(p, (uchar*)s, n) < 0){ |
| 43 | vtfree(s); |
| 44 | return -1; |
| 45 | } |
| 46 | s[n] = 0; |
| 47 | *ps = s; |
| 48 | return 0; |
| 49 | } |
| 50 | |
