comparison: core/protocols/qq/packet_parse.c
core/protocols/qq/packet_parse.c
- changeset 14253
- b63ebf84c42b
- parent 14083
- 2b68bb18a66c
equal
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| 14252:d10dda2777a9 | 14253:b63ebf84c42b |
|---|---|
| 1 /** | |
| 2 * The QQ2003C protocol plugin | |
| 3 * | |
| 4 * for gaim | |
| 5 * | |
| 6 * Copyright (C) 2004 Puzzlebird | |
| 7 * | |
| 8 * This program is free software; you can redistribute it and/or modify | |
| 9 * it under the terms of the GNU General Public License as published by | |
| 10 * the Free Software Foundation; either version 2 of the License, or | |
| 11 * (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, | |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 * GNU General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with this program; if not, write to the Free Software | |
| 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 21 */ | |
| 22 | |
| 23 #ifndef _WIN32 | |
| 24 #include <arpa/inet.h> | |
| 25 #else | |
| 26 #include "win32dep.h" | |
| 27 #endif | |
| 28 | |
| 29 #include <string.h> | |
| 30 | |
| 31 #include "packet_parse.h" | |
| 32 | |
| 33 /* read one byte from buf, | |
| 34 * return the number of bytes read if succeeds, otherwise return -1 */ | |
| 35 gint read_packet_b(guint8 *buf, guint8 **cursor, gint buflen, guint8 *b) | |
| 36 { | |
| 37 if (*cursor <= buf + buflen - sizeof(*b)) { | |
| 38 *b = **(guint8 **) cursor; | |
| 39 *cursor += sizeof(*b); | |
| 40 return sizeof(*b); | |
| 41 } else { | |
| 42 return -1; | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 /* read two bytes as "guint16" from buf, | |
| 47 * return the number of bytes read if succeeds, otherwise return -1 */ | |
| 48 gint read_packet_w(guint8 *buf, guint8 **cursor, gint buflen, guint16 *w) | |
| 49 { | |
| 50 if (*cursor <= buf + buflen - sizeof(*w)) { | |
| 51 *w = ntohs(**(guint16 **) cursor); | |
| 52 *cursor += sizeof(*w); | |
| 53 return sizeof(*w); | |
| 54 } else { | |
| 55 return -1; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 /* read four bytes as "guint32" from buf, | |
| 60 * return the number of bytes read if succeeds, otherwise return -1 */ | |
| 61 gint read_packet_dw(guint8 *buf, guint8 **cursor, gint buflen, guint32 *dw) | |
| 62 { | |
| 63 if (*cursor <= buf + buflen - sizeof(*dw)) { | |
| 64 *dw = ntohl(**(guint32 **) cursor); | |
| 65 *cursor += sizeof(*dw); | |
| 66 return sizeof(*dw); | |
| 67 } else { | |
| 68 return -1; | |
| 69 } | |
| 70 } | |
| 71 | |
| 72 /* read datalen bytes from buf, | |
| 73 * return the number of bytes read if succeeds, otherwise return -1 */ | |
| 74 gint read_packet_data(guint8 *buf, guint8 **cursor, gint buflen, guint8 *data, gint datalen) { | |
| 75 if (*cursor <= buf + buflen - datalen) { | |
| 76 g_memmove(data, *cursor, datalen); | |
| 77 *cursor += datalen; | |
| 78 return datalen; | |
| 79 } else { | |
| 80 return -1; | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 /* pack one byte into buf | |
| 85 * return the number of bytes packed, otherwise return -1 */ | |
| 86 gint create_packet_b(guint8 *buf, guint8 **cursor, guint8 b) | |
| 87 { | |
| 88 if (*cursor <= buf + MAX_PACKET_SIZE - sizeof(guint8)) { | |
| 89 **(guint8 **) cursor = b; | |
| 90 *cursor += sizeof(guint8); | |
| 91 return sizeof(guint8); | |
| 92 } else { | |
| 93 return -1; | |
| 94 } | |
| 95 } | |
| 96 | |
| 97 /* pack two bytes as "guint16" into buf | |
| 98 * return the number of bytes packed, otherwise return -1 */ | |
| 99 gint create_packet_w(guint8 *buf, guint8 **cursor, guint16 w) | |
| 100 { | |
| 101 if (*cursor <= buf + MAX_PACKET_SIZE - sizeof(guint16)) { | |
| 102 **(guint16 **) cursor = htons(w); | |
| 103 *cursor += sizeof(guint16); | |
| 104 return sizeof(guint16); | |
| 105 } else { | |
| 106 return -1; | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 /* pack four bytes as "guint32" into buf | |
| 111 * return the number of bytes packed, otherwise return -1 */ | |
| 112 gint create_packet_dw(guint8 *buf, guint8 **cursor, guint32 dw) | |
| 113 { | |
| 114 if (*cursor <= buf + MAX_PACKET_SIZE - sizeof(guint32)) { | |
| 115 **(guint32 **) cursor = htonl(dw); | |
| 116 *cursor += sizeof(guint32); | |
| 117 return sizeof(guint32); | |
| 118 } else { | |
| 119 return -1; | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 /* pack datalen bytes into buf | |
| 124 * return the number of bytes packed, otherwise return -1 */ | |
| 125 gint create_packet_data(guint8 *buf, guint8 **cursor, guint8 *data, gint datalen) | |
| 126 { | |
| 127 if (*cursor <= buf + MAX_PACKET_SIZE - datalen) { | |
| 128 g_memmove(*cursor, data, datalen); | |
| 129 *cursor += datalen; | |
| 130 return datalen; | |
| 131 } else { | |
| 132 return -1; | |
| 133 } | |
| 134 } |
