comparison: src/socket.c
src/socket.c
- changeset 3478
- 28a897f24a35
- child 3499
- a990e5706445
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| 3477:48832bdd1df5 | 3478:28a897f24a35 |
|---|---|
| 1 /* | |
| 2 * gaim-remote | |
| 3 * | |
| 4 * Copyright (C) 2002, Sean Egan <bj91704@binghamton.edu> | |
| 5 * | |
| 6 * This program is free software; you can redistribute it and/or modify | |
| 7 * it under the terms of the GNU General Public License as published by | |
| 8 * the Free Software Foundation; either version 2 of the License, or | |
| 9 * (at your option) any later version. | |
| 10 * | |
| 11 * This program is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 * GNU General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU General Public License | |
| 17 * along with this program; if not, write to the Free Software | |
| 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 * | |
| 20 */ | |
| 21 | |
| 22 /* Somewhat inspired by XMMS: | |
| 23 * Copyright (C) 1998-2002 Peter Alm, Mikael Alm, Olle Hallnas, | |
| 24 * Thomas Nilsson and 4Front Technologies | |
| 25 * Copyright (C) 1999-2002 Haavard Kvaalen | |
| 26 */ | |
| 27 | |
| 28 /* This provides code for connecting to a Gaim socket and communicating with | |
| 29 * it. It will eventually be made a library once the core and ui are split. */ | |
| 30 | |
| 31 #include <sys/socket.h> | |
| 32 #include <sys/un.h> | |
| 33 #include "gaim.h" | |
| 34 #include "gaim-socket.h" | |
| 35 | |
| 36 void cui_send_packet (int fd, struct gaim_cui_packet *p) { | |
| 37 int len = sizeof(p->type) + sizeof(p->subtype) + sizeof(p->length) + p->length; | |
| 38 char *pack = g_malloc(len); | |
| 39 char *a = pack; | |
| 40 memcpy (a, &(p->type), sizeof(p->type)); | |
| 41 a = a + sizeof(p->type); | |
| 42 memcpy (a, &(p->subtype), sizeof(p->subtype)); | |
| 43 a = a + sizeof(p->subtype); | |
| 44 memcpy (a, &(p->length), sizeof(p->length)); | |
| 45 a = a + sizeof(p->length); | |
| 46 memcpy (a, p->data, p->length); | |
| 47 write(fd, pack, len); | |
| 48 g_free(pack); | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void cui_packet_append_string(struct gaim_cui_packet *p, char *str) { | |
| 53 int len = p->length + strlen(str); | |
| 54 char *k = g_malloc(len); | |
| 55 memcpy(k, p->data, p->length); | |
| 56 memcpy(k + p->length, str, strlen(str)); | |
| 57 if (p->data) | |
| 58 g_free(p->data); | |
| 59 p->data = k; | |
| 60 p->length = len; | |
| 61 } | |
| 62 | |
| 63 void cui_packet_append_char(struct gaim_cui_packet *p, char c) { | |
| 64 int len = p->length + sizeof(char); | |
| 65 char *k = g_malloc(len); | |
| 66 memcpy(k, p->data, p->length); | |
| 67 k[p->length] = c; | |
| 68 if (p->data) | |
| 69 g_free(p->data); | |
| 70 p->data = k; | |
| 71 p->length = len; | |
| 72 } | |
| 73 | |
| 74 void cui_packet_append_raw(struct gaim_cui_packet *p, char *str, int len) { | |
| 75 int lent = p->length + len; | |
| 76 char *k = g_malloc(lent); | |
| 77 memcpy(k, p->data, p->length); | |
| 78 memcpy(k + p->length, str, len); | |
| 79 if (p->data) | |
| 80 g_free(p->data); | |
| 81 p->data = k; | |
| 82 p->length = lent; | |
| 83 } | |
| 84 | |
| 85 struct gaim_cui_packet *cui_packet_new(guchar type, guchar subtype) { | |
| 86 struct gaim_cui_packet *p = g_new0(struct gaim_cui_packet, 1); | |
| 87 p->type = type; | |
| 88 p->subtype = subtype; | |
| 89 p->length = 0; | |
| 90 p->data = NULL; | |
| 91 return p; | |
| 92 } | |
| 93 | |
| 94 void cui_packet_free(struct gaim_cui_packet *p) { | |
| 95 if (p->data) | |
| 96 g_free(p->data); | |
| 97 g_free(p); | |
| 98 } | |
| 99 | |
| 100 struct gaim_cui_packet *cui_read_packet(int fd) { | |
| 101 struct gaim_cui_packet *p = g_new0(struct gaim_cui_packet, 1); | |
| 102 char *data = NULL; | |
| 103 | |
| 104 if (!(read(fd, p->type, sizeof(p->type)))) { | |
| 105 g_free(p); | |
| 106 return NULL; | |
| 107 } | |
| 108 | |
| 109 | |
| 110 if (!(read(fd, p->subtype, sizeof(p->subtype)))) { | |
| 111 g_free(p); | |
| 112 return NULL; | |
| 113 } | |
| 114 | |
| 115 | |
| 116 if (!(read(fd, p->length, sizeof(p->length)))) { | |
| 117 g_free(p); | |
| 118 return NULL; | |
| 119 } | |
| 120 | |
| 121 if (p->length) { | |
| 122 data = g_malloc(p->length); | |
| 123 if (!(read(fd, data, p->length))) { | |
| 124 g_free(p); | |
| 125 return NULL; | |
| 126 } | |
| 127 } | |
| 128 p->data = data; | |
| 129 } | |
| 130 | |
| 131 /* copied directly from xmms_connect_to_session */ | |
| 132 gint gaim_connect_to_session(gint session) | |
| 133 { | |
| 134 gint fd; | |
| 135 uid_t stored_uid, euid; | |
| 136 struct sockaddr_un saddr; | |
| 137 | |
| 138 if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) != -1) | |
| 139 { | |
| 140 saddr.sun_family = AF_UNIX; | |
| 141 stored_uid = getuid(); | |
| 142 euid = geteuid(); | |
| 143 setuid(euid); | |
| 144 sprintf(saddr.sun_path, "%s/gaim_%s.%d", g_get_tmp_dir(), g_get_user_name(), session); | |
| 145 setreuid(stored_uid, euid); | |
| 146 if (connect(fd, (struct sockaddr *) &saddr, sizeof (saddr)) != -1) | |
| 147 return fd; | |
| 148 } | |
| 149 close(fd); | |
| 150 return -1; | |
| 151 } | |
| 152 | |
| 153 gboolean gaim_session_exists(int sess) | |
| 154 { | |
| 155 struct gaim_cui_packet *pack = NULL; | |
| 156 | |
| 157 int fd = gaim_connect_to_session(sess); | |
| 158 if (fd > 0) { | |
| 159 pack = cui_packet_new(CUI_TYPE_META, CUI_META_PING); | |
| 160 cui_send_packet(fd, pack); | |
| 161 cui_packet_free(pack); | |
| 162 close(fd); | |
| 163 } else { | |
| 164 return FALSE; | |
| 165 } | |
| 166 return TRUE; | |
| 167 } | |
| 168 |
