| 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "monitor/monitor.h" |
| 27 | #include "qapi/error.h" |
| 28 | #include "util.h" |
| 29 | |
| 30 | int net_parse_macaddr(uint8_t *macaddr, const char *p) |
| 31 | { |
| 32 | int i; |
| 33 | char *last_char; |
| 34 | long int offset; |
| 35 | |
| 36 | errno = 0; |
| 37 | offset = strtol(p, &last_char, 0); |
| 38 | if (errno == 0 && *last_char == '\0' && |
| 39 | offset >= 0 && offset <= 0xFFFFFF) { |
| 40 | macaddr[3] = (offset & 0xFF0000) >> 16; |
| 41 | macaddr[4] = (offset & 0xFF00) >> 8; |
| 42 | macaddr[5] = offset & 0xFF; |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | for (i = 0; i < 6; i++) { |
| 47 | macaddr[i] = strtol(p, (char **)&p, 16); |
| 48 | if (i == 5) { |
| 49 | if (*p != '\0') { |
| 50 | return -1; |
| 51 | } |
| 52 | } else { |
| 53 | if (*p != ':' && *p != '-') { |
| 54 | return -1; |
| 55 | } |
| 56 | p++; |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return 0; |
| 61 | } |
| 62 | |
| 63 | void net_free_fds(int *fds, int nfds) |
| 64 | { |
| 65 | int i; |
| 66 | |
| 67 | if (!fds || nfds <= 0) { |
| 68 | return; |
| 69 | } |
| 70 | |
| 71 | for (i = 0; i < nfds; i++) { |
| 72 | if (fds[i] != -1) { |
| 73 | close(fds[i]); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | g_free(fds); |
| 78 | } |
| 79 | |
| 80 | int net_parse_fds(const char *fds_param, int **fds, int expected_nfds, |
| 81 | Error **errp) |
| 82 | { |
| 83 | g_auto(GStrv) fdnames = g_strsplit(fds_param, ":", -1); |
| 84 | unsigned nfds = g_strv_length(fdnames); |
| 85 | int i; |
| 86 | |
| 87 | if (nfds > INT_MAX) { |
| 88 | error_setg(errp, "fds parameter exceeds maximum of %d", INT_MAX); |
| 89 | return -1; |
| 90 | } |
| 91 | |
| 92 | if (expected_nfds && nfds != expected_nfds) { |
| 93 | error_setg(errp, "expected %u socket fds, got %u", expected_nfds, nfds); |
| 94 | return -1; |
| 95 | } |
| 96 | |
| 97 | if (nfds == 0) { |
| 98 | error_setg(errp, "no fds passed"); |
| 99 | return -1; |
| 100 | } |
| 101 | |
| 102 | *fds = g_new(int, nfds); |
| 103 | |
| 104 | for (i = 0; i < nfds; i++) { |
| 105 | (*fds)[i] = monitor_fd_param(monitor_cur(), fdnames[i], errp); |
| 106 | if ((*fds)[i] == -1) { |
| 107 | net_free_fds(*fds, i); |
| 108 | *fds = NULL; |
| 109 | return -1; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | return nfds; |
| 114 | } |