[5ebff60] | 1 | /********************************************************************\ |
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[a312b6b] | 2 | * BitlBee -- An IRC to other IM-networks gateway * |
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| 3 | * * |
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[a338faa] | 4 | * Copyright 2002-2012 Wilmer van der Gaast and others * |
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[a312b6b] | 5 | \********************************************************************/ |
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| 6 | |
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| 7 | /* Storage backend that uses an XMLish format for all data. */ |
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| 8 | |
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| 9 | /* |
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| 10 | This program is free software; you can redistribute it and/or modify |
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| 11 | it under the terms of the GNU General Public License as published by |
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| 12 | the Free Software Foundation; either version 2 of the License, or |
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| 13 | (at your option) any later version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, |
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| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 18 | GNU General Public License for more details. |
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| 19 | |
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| 20 | You should have received a copy of the GNU General Public License with |
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| 21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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[6f10697] | 22 | if not, write to the Free Software Foundation, Inc., 51 Franklin St., |
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| 23 | Fifth Floor, Boston, MA 02110-1301 USA |
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[a312b6b] | 24 | */ |
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| 25 | |
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| 26 | #define BITLBEE_CORE |
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| 27 | #include "bitlbee.h" |
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[6e1fed7] | 28 | #include "base64.h" |
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[a7b5925] | 29 | #include "arc.h" |
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[d28f3b35] | 30 | #include "md5.h" |
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[a338faa] | 31 | #include "xmltree.h" |
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[a312b6b] | 32 | |
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[88d2208] | 33 | #include <glib/gstdio.h> |
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[47b571d] | 34 | |
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[5ebff60] | 35 | typedef enum { |
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[c121f89] | 36 | XML_PASS_CHECK_ONLY = -1, |
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| 37 | XML_PASS_UNKNOWN = 0, |
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[c9f0c79] | 38 | XML_PASS_WRONG, |
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[c121f89] | 39 | XML_PASS_OK |
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| 40 | } xml_pass_st; |
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| 41 | |
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[c9f0c79] | 42 | /* To make it easier later when extending the format: */ |
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[a338faa] | 43 | #define XML_FORMAT_VERSION "1" |
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[c121f89] | 44 | |
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[5ebff60] | 45 | struct xml_parsedata { |
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[a312b6b] | 46 | irc_t *irc; |
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[5ebff60] | 47 | char given_nick[MAX_NICK_LENGTH + 1]; |
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[c121f89] | 48 | char *given_pass; |
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[a312b6b] | 49 | }; |
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| 50 | |
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[5ebff60] | 51 | static void xml_init(void) |
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[c121f89] | 52 | { |
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[5ebff60] | 53 | if (g_access(global.conf->configdir, F_OK) != 0) { |
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| 54 | log_message(LOGLVL_WARNING, |
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| 55 | "The configuration directory `%s' does not exist. Configuration won't be saved.", |
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| 56 | global.conf->configdir); |
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| 57 | } else if (g_access(global.conf->configdir, F_OK) != 0 || |
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| 58 | g_access(global.conf->configdir, W_OK) != 0) { |
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| 59 | log_message(LOGLVL_WARNING, "Permission problem: Can't read/write from/to `%s'.", |
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| 60 | global.conf->configdir); |
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| 61 | } |
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[c121f89] | 62 | } |
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| 63 | |
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[5ebff60] | 64 | static void handle_settings(struct xt_node *node, set_t **head) |
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[a312b6b] | 65 | { |
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[00f1e93] | 66 | struct xt_node *c; |
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[e41ba05] | 67 | struct set *s; |
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[5ebff60] | 68 | |
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| 69 | for (c = node->children; (c = xt_find_node(c, "setting")); c = c->next) { |
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| 70 | char *name = xt_find_attr(c, "name"); |
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[e41ba05] | 71 | char *locked = xt_find_attr(c, "locked"); |
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[5ebff60] | 72 | |
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| 73 | if (!name) { |
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[15581c1] | 74 | continue; |
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[5ebff60] | 75 | } |
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| 76 | |
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| 77 | if (strcmp(node->name, "account") == 0) { |
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| 78 | set_t *s = set_find(head, name); |
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| 79 | if (s && (s->flags & ACC_SET_ONLINE_ONLY)) { |
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[00f1e93] | 80 | continue; /* U can't touch this! */ |
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[5ebff60] | 81 | } |
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[6e1fed7] | 82 | } |
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[5ebff60] | 83 | set_setstr(head, name, c->text); |
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[e41ba05] | 84 | if (locked && !g_strcasecmp(locked, "true")) { |
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| 85 | s = set_find(head, name); |
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| 86 | if (s) { |
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| 87 | s->flags |= SET_LOCKED; |
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| 88 | } |
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| 89 | } |
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[a312b6b] | 90 | } |
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| 91 | } |
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| 92 | |
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[5ebff60] | 93 | static xt_status handle_account(struct xt_node *node, gpointer data) |
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[a312b6b] | 94 | { |
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[5898ef8] | 95 | struct xml_parsedata *xd = data; |
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[3ac6d9f] | 96 | char *protocol, *handle, *server, *password = NULL, *autoconnect, *tag, *locked; |
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[00f1e93] | 97 | char *pass_b64 = NULL; |
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| 98 | unsigned char *pass_cr = NULL; |
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[1783ab6] | 99 | int pass_len, local = 0; |
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[00f1e93] | 100 | struct prpl *prpl = NULL; |
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| 101 | account_t *acc; |
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| 102 | struct xt_node *c; |
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[5ebff60] | 103 | |
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| 104 | handle = xt_find_attr(node, "handle"); |
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| 105 | pass_b64 = xt_find_attr(node, "password"); |
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| 106 | server = xt_find_attr(node, "server"); |
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| 107 | autoconnect = xt_find_attr(node, "autoconnect"); |
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| 108 | tag = xt_find_attr(node, "tag"); |
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[3ac6d9f] | 109 | locked = xt_find_attr(node, "locked"); |
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[5ebff60] | 110 | |
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| 111 | protocol = xt_find_attr(node, "protocol"); |
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| 112 | if (protocol) { |
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| 113 | prpl = find_protocol(protocol); |
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[7320610] | 114 | if (!prpl) { |
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| 115 | irc_rootmsg(xd->irc, "Error loading user config: Protocol not found: `%s'", protocol); |
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| 116 | return XT_ABORT; |
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| 117 | } |
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[5ebff60] | 118 | local = protocol_account_islocal(protocol); |
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[1783ab6] | 119 | } |
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[5ebff60] | 120 | |
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| 121 | if (!handle || !pass_b64 || !protocol || !prpl) { |
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[00f1e93] | 122 | return XT_ABORT; |
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[5ebff60] | 123 | } else if ((pass_len = base64_decode(pass_b64, (unsigned char **) &pass_cr)) && |
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| 124 | arc_decode(pass_cr, pass_len, &password, xd->given_pass) >= 0) { |
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| 125 | acc = account_add(xd->irc->b, prpl, handle, password); |
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| 126 | if (server) { |
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| 127 | set_setstr(&acc->set, "server", server); |
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| 128 | } |
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| 129 | if (autoconnect) { |
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| 130 | set_setstr(&acc->set, "auto_connect", autoconnect); |
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| 131 | } |
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| 132 | if (tag) { |
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| 133 | set_setstr(&acc->set, "tag", tag); |
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| 134 | } |
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| 135 | if (local) { |
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[1783ab6] | 136 | acc->flags |= ACC_FLAG_LOCAL; |
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[5ebff60] | 137 | } |
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[3ac6d9f] | 138 | if (locked && !g_strcasecmp(locked, "true")) { |
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| 139 | acc->flags |= ACC_FLAG_LOCKED; |
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| 140 | } |
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[5ebff60] | 141 | } else { |
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[098a75b] | 142 | g_free(pass_cr); |
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| 143 | g_free(password); |
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[00f1e93] | 144 | return XT_ABORT; |
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[5ebff60] | 145 | } |
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| 146 | |
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| 147 | g_free(pass_cr); |
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| 148 | g_free(password); |
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| 149 | |
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| 150 | handle_settings(node, &acc->set); |
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| 151 | |
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| 152 | for (c = node->children; (c = xt_find_node(c, "buddy")); c = c->next) { |
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[c121f89] | 153 | char *handle, *nick; |
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[5ebff60] | 154 | |
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| 155 | handle = xt_find_attr(c, "handle"); |
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| 156 | nick = xt_find_attr(c, "nick"); |
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| 157 | |
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| 158 | if (handle && nick) { |
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| 159 | nick_set_raw(acc, handle, nick); |
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| 160 | } else { |
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[00f1e93] | 161 | return XT_ABORT; |
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[5ebff60] | 162 | } |
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| 163 | } |
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[00f1e93] | 164 | return XT_HANDLED; |
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[a312b6b] | 165 | } |
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| 166 | |
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[5ebff60] | 167 | static xt_status handle_channel(struct xt_node *node, gpointer data) |
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[a312b6b] | 168 | { |
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[5898ef8] | 169 | struct xml_parsedata *xd = data; |
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[00f1e93] | 170 | irc_channel_t *ic; |
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| 171 | char *name, *type; |
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[5ebff60] | 172 | |
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| 173 | name = xt_find_attr(node, "name"); |
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| 174 | type = xt_find_attr(node, "type"); |
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| 175 | |
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| 176 | if (!name || !type) { |
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[00f1e93] | 177 | return XT_ABORT; |
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[5ebff60] | 178 | } |
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| 179 | |
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[00f1e93] | 180 | /* The channel may exist already, for example if it's &bitlbee. |
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| 181 | Also, it's possible that the user just reconnected and the |
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| 182 | IRC client already rejoined all channels it was in. They |
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| 183 | should still get the right settings. */ |
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[5ebff60] | 184 | if ((ic = irc_channel_by_name(xd->irc, name)) || |
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| 185 | (ic = irc_channel_new(xd->irc, name))) { |
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| 186 | set_setstr(&ic->set, "type", type); |
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| 187 | } |
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| 188 | |
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| 189 | handle_settings(node, &ic->set); |
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| 190 | |
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[00f1e93] | 191 | return XT_HANDLED; |
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[a312b6b] | 192 | } |
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| 193 | |
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[00f1e93] | 194 | static const struct xt_handler_entry handlers[] = { |
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| 195 | { "account", "user", handle_account, }, |
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| 196 | { "channel", "user", handle_channel, }, |
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| 197 | { NULL, NULL, NULL, }, |
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[a312b6b] | 198 | }; |
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| 199 | |
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[5ebff60] | 200 | static storage_status_t xml_load_real(irc_t *irc, const char *my_nick, const char *password, xml_pass_st action) |
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[a312b6b] | 201 | { |
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[00f1e93] | 202 | struct xml_parsedata xd[1]; |
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[15581c1] | 203 | char *fn, buf[2048]; |
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[c121f89] | 204 | int fd, st; |
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[aed00f8] | 205 | struct xt_parser *xp = NULL; |
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[00f1e93] | 206 | struct xt_node *node; |
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| 207 | storage_status_t ret = STORAGE_OTHER_ERROR; |
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[5ebff60] | 208 | |
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[c121f89] | 209 | xd->irc = irc; |
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[5ebff60] | 210 | strncpy(xd->given_nick, my_nick, MAX_NICK_LENGTH); |
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[00f1e93] | 211 | xd->given_nick[MAX_NICK_LENGTH] = '\0'; |
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[5ebff60] | 212 | nick_lc(NULL, xd->given_nick); |
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| 213 | xd->given_pass = (char *) password; |
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| 214 | |
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| 215 | fn = g_strconcat(global.conf->configdir, xd->given_nick, ".xml", NULL); |
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| 216 | if ((fd = open(fn, O_RDONLY)) < 0) { |
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[7320610] | 217 | if (errno == ENOENT) { |
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| 218 | ret = STORAGE_NO_SUCH_USER; |
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| 219 | } else { |
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| 220 | irc_rootmsg(irc, "Error loading user config: %s", g_strerror(errno)); |
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| 221 | } |
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[00f1e93] | 222 | goto error; |
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[a312b6b] | 223 | } |
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[5ebff60] | 224 | |
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| 225 | xp = xt_new(handlers, xd); |
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| 226 | while ((st = read(fd, buf, sizeof(buf))) > 0) { |
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| 227 | st = xt_feed(xp, buf, st); |
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| 228 | if (st != 1) { |
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[00f1e93] | 229 | break; |
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[5ebff60] | 230 | } |
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[00f1e93] | 231 | } |
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[5ebff60] | 232 | close(fd); |
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| 233 | if (st != 0) { |
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[00f1e93] | 234 | goto error; |
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[5ebff60] | 235 | } |
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| 236 | |
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[00f1e93] | 237 | node = xp->root; |
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[5ebff60] | 238 | if (node == NULL || node->next != NULL || strcmp(node->name, "user") != 0) { |
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[00f1e93] | 239 | goto error; |
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[5ebff60] | 240 | } |
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| 241 | |
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[00f1e93] | 242 | { |
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[5ebff60] | 243 | char *nick = xt_find_attr(node, "nick"); |
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| 244 | char *pass = xt_find_attr(node, "password"); |
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| 245 | |
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| 246 | if (!nick || !pass) { |
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[00f1e93] | 247 | goto error; |
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[5ebff60] | 248 | } else if ((st = md5_verify_password(xd->given_pass, pass)) != 0) { |
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[00f1e93] | 249 | ret = STORAGE_INVALID_PASSWORD; |
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| 250 | goto error; |
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[c121f89] | 251 | } |
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[a312b6b] | 252 | } |
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[5ebff60] | 253 | |
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| 254 | if (action == XML_PASS_CHECK_ONLY) { |
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[00f1e93] | 255 | ret = STORAGE_OK; |
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| 256 | goto error; |
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| 257 | } |
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[5ebff60] | 258 | |
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[00f1e93] | 259 | /* DO NOT call xt_handle() before verifying the password! */ |
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[5ebff60] | 260 | if (xt_handle(xp, NULL, 1) == XT_HANDLED) { |
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[00f1e93] | 261 | ret = STORAGE_OK; |
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[5ebff60] | 262 | } |
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| 263 | |
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| 264 | handle_settings(node, &xd->irc->b->set); |
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| 265 | |
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[00f1e93] | 266 | error: |
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[5ebff60] | 267 | xt_free(xp); |
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| 268 | g_free(fn); |
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[00f1e93] | 269 | return ret; |
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[a312b6b] | 270 | } |
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| 271 | |
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[5ebff60] | 272 | static storage_status_t xml_load(irc_t *irc, const char *password) |
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[84e9cea] | 273 | { |
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[5ebff60] | 274 | return xml_load_real(irc, irc->user->nick, password, XML_PASS_UNKNOWN); |
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[84e9cea] | 275 | } |
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| 276 | |
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[5ebff60] | 277 | static storage_status_t xml_check_pass(const char *my_nick, const char *password) |
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[84e9cea] | 278 | { |
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[5ebff60] | 279 | return xml_load_real(NULL, my_nick, password, XML_PASS_CHECK_ONLY); |
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[84e9cea] | 280 | } |
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| 281 | |
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[5898ef8] | 282 | |
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[5ebff60] | 283 | static void xml_generate_settings(struct xt_node *cur, set_t **head); |
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[5b52a48] | 284 | |
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[5ebff60] | 285 | struct xt_node *xml_generate(irc_t *irc) |
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[a312b6b] | 286 | { |
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[a338faa] | 287 | char *pass_buf = NULL; |
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[5898ef8] | 288 | account_t *acc; |
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[6e1fed7] | 289 | md5_byte_t pass_md5[21]; |
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[ece2cd2] | 290 | md5_state_t md5_state; |
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[547ea68] | 291 | GSList *l; |
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[a338faa] | 292 | struct xt_node *root, *cur; |
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[5ebff60] | 293 | |
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[6e1fed7] | 294 | /* Generate a salted md5sum of the password. Use 5 bytes for the salt |
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| 295 | (to prevent dictionary lookups of passwords) to end up with a 21- |
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| 296 | byte password hash, more convenient for base64 encoding. */ |
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[5ebff60] | 297 | random_bytes(pass_md5 + 16, 5); |
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| 298 | md5_init(&md5_state); |
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| 299 | md5_append(&md5_state, (md5_byte_t *) irc->password, strlen(irc->password)); |
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| 300 | md5_append(&md5_state, pass_md5 + 16, 5); /* Add the salt. */ |
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| 301 | md5_finish(&md5_state, pass_md5); |
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[6e1fed7] | 302 | /* Save the hash in base64-encoded form. */ |
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[5ebff60] | 303 | pass_buf = base64_encode(pass_md5, 21); |
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| 304 | |
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| 305 | root = cur = xt_new_node("user", NULL, NULL); |
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| 306 | xt_add_attr(cur, "nick", irc->user->nick); |
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| 307 | xt_add_attr(cur, "password", pass_buf); |
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| 308 | xt_add_attr(cur, "version", XML_FORMAT_VERSION); |
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| 309 | |
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| 310 | g_free(pass_buf); |
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| 311 | |
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| 312 | xml_generate_settings(cur, &irc->b->set); |
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| 313 | |
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| 314 | for (acc = irc->b->accounts; acc; acc = acc->next) { |
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[d5c55ac] | 315 | GHashTableIter iter; |
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| 316 | gpointer key, value; |
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[a7b5925] | 317 | unsigned char *pass_cr; |
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[3b6eadc] | 318 | char *pass_b64; |
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[6e1fed7] | 319 | int pass_len; |
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[5ebff60] | 320 | |
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| 321 | pass_len = arc_encode(acc->pass, strlen(acc->pass), (unsigned char **) &pass_cr, irc->password, 12); |
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| 322 | pass_b64 = base64_encode(pass_cr, pass_len); |
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| 323 | g_free(pass_cr); |
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| 324 | |
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| 325 | cur = xt_new_node("account", NULL, NULL); |
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| 326 | xt_add_attr(cur, "protocol", acc->prpl->name); |
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| 327 | xt_add_attr(cur, "handle", acc->user); |
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| 328 | xt_add_attr(cur, "password", pass_b64); |
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| 329 | xt_add_attr(cur, "autoconnect", acc->auto_connect ? "true" : "false"); |
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| 330 | xt_add_attr(cur, "tag", acc->tag); |
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| 331 | if (acc->server && acc->server[0]) { |
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| 332 | xt_add_attr(cur, "server", acc->server); |
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| 333 | } |
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[3ac6d9f] | 334 | if (acc->flags & ACC_FLAG_LOCKED) { |
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| 335 | xt_add_attr(cur, "locked", "true"); |
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| 336 | } |
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[5ebff60] | 337 | |
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| 338 | g_free(pass_b64); |
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| 339 | |
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[d5c55ac] | 340 | g_hash_table_iter_init(&iter, acc->nicks); |
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| 341 | while (g_hash_table_iter_next(&iter, &key, &value)) { |
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| 342 | struct xt_node *node = xt_new_node("buddy", NULL, NULL); |
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| 343 | xt_add_attr(node, "handle", key); |
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| 344 | xt_add_attr(node, "nick", value); |
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| 345 | xt_add_child(cur, node); |
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| 346 | } |
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[5ebff60] | 347 | |
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| 348 | xml_generate_settings(cur, &acc->set); |
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| 349 | |
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| 350 | xt_add_child(root, cur); |
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[5898ef8] | 351 | } |
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[5ebff60] | 352 | |
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| 353 | for (l = irc->channels; l; l = l->next) { |
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[547ea68] | 354 | irc_channel_t *ic = l->data; |
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[5ebff60] | 355 | |
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| 356 | if (ic->flags & IRC_CHANNEL_TEMP) { |
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[1c40aa7] | 357 | continue; |
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[5ebff60] | 358 | } |
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| 359 | |
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| 360 | cur = xt_new_node("channel", NULL, NULL); |
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| 361 | xt_add_attr(cur, "name", ic->name); |
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| 362 | xt_add_attr(cur, "type", set_getstr(&ic->set, "type")); |
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| 363 | |
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| 364 | xml_generate_settings(cur, &ic->set); |
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| 365 | |
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| 366 | xt_add_child(root, cur); |
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[547ea68] | 367 | } |
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[5ebff60] | 368 | |
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[a338faa] | 369 | return root; |
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| 370 | } |
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| 371 | |
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[5ebff60] | 372 | static void xml_generate_settings(struct xt_node *cur, set_t **head) |
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[e222c36] | 373 | { |
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| 374 | set_t *set; |
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[5ebff60] | 375 | |
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| 376 | for (set = *head; set; set = set->next) { |
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| 377 | if (set->value && !(set->flags & SET_NOSAVE)) { |
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[e222c36] | 378 | struct xt_node *xset; |
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[5ebff60] | 379 | xt_add_child(cur, xset = xt_new_node("setting", set->value, NULL)); |
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| 380 | xt_add_attr(xset, "name", set->key); |
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[e41ba05] | 381 | if (set->flags & SET_LOCKED) { |
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| 382 | xt_add_attr(xset, "locked", "true"); |
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| 383 | } |
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[e222c36] | 384 | } |
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[5ebff60] | 385 | } |
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[e222c36] | 386 | } |
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| 387 | |
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[5ebff60] | 388 | static storage_status_t xml_save(irc_t *irc, int overwrite) |
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[a338faa] | 389 | { |
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[d219296] | 390 | storage_status_t ret = STORAGE_OK; |
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| 391 | char path[512], *path2 = NULL, *xml = NULL; |
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| 392 | struct xt_node *tree = NULL; |
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| 393 | size_t len; |
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[a338faa] | 394 | int fd; |
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[5ebff60] | 395 | |
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| 396 | path2 = g_strdup(irc->user->nick); |
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| 397 | nick_lc(NULL, path2); |
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| 398 | g_snprintf(path, sizeof(path) - 20, "%s%s%s", global.conf->configdir, path2, ".xml"); |
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| 399 | g_free(path2); |
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| 400 | |
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| 401 | if (!overwrite && g_access(path, F_OK) == 0) { |
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[a338faa] | 402 | return STORAGE_ALREADY_EXISTS; |
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[5ebff60] | 403 | } |
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| 404 | |
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| 405 | strcat(path, ".XXXXXX"); |
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| 406 | if ((fd = mkstemp(path)) < 0) { |
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[7320610] | 407 | goto error; |
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[547ea68] | 408 | } |
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[5ebff60] | 409 | |
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| 410 | tree = xml_generate(irc); |
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| 411 | xml = xt_to_string_i(tree); |
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| 412 | len = strlen(xml); |
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| 413 | if (write(fd, xml, len) != len || |
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| 414 | fsync(fd) != 0 || /* #559 */ |
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| 415 | close(fd) != 0) { |
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[d219296] | 416 | goto error; |
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[5ebff60] | 417 | } |
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| 418 | |
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| 419 | path2 = g_strndup(path, strlen(path) - 7); |
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| 420 | if (rename(path, path2) != 0) { |
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| 421 | g_free(path2); |
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[d219296] | 422 | goto error; |
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[5898ef8] | 423 | } |
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[5ebff60] | 424 | g_free(path2); |
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| 425 | |
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[d219296] | 426 | goto finish; |
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[5898ef8] | 427 | |
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[d219296] | 428 | error: |
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[7320610] | 429 | irc_rootmsg(irc, "Write error: %s", g_strerror(errno)); |
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[d219296] | 430 | ret = STORAGE_OTHER_ERROR; |
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| 431 | |
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[5ebff60] | 432 | finish: |
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| 433 | close(fd); |
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| 434 | unlink(path); |
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| 435 | g_free(xml); |
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| 436 | xt_free_node(tree); |
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| 437 | |
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[d219296] | 438 | return ret; |
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[a312b6b] | 439 | } |
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| 440 | |
---|
[5b52a48] | 441 | |
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[5ebff60] | 442 | static storage_status_t xml_remove(const char *nick, const char *password) |
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[84e9cea] | 443 | { |
---|
[e0f9170] | 444 | char s[512], *lc; |
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[84e9cea] | 445 | storage_status_t status; |
---|
| 446 | |
---|
[5ebff60] | 447 | status = xml_check_pass(nick, password); |
---|
| 448 | if (status != STORAGE_OK) { |
---|
[84e9cea] | 449 | return status; |
---|
[5ebff60] | 450 | } |
---|
| 451 | |
---|
| 452 | lc = g_strdup(nick); |
---|
| 453 | nick_lc(NULL, lc); |
---|
| 454 | g_snprintf(s, 511, "%s%s%s", global.conf->configdir, lc, ".xml"); |
---|
| 455 | g_free(lc); |
---|
[84e9cea] | 456 | |
---|
[5ebff60] | 457 | if (unlink(s) == -1) { |
---|
[84e9cea] | 458 | return STORAGE_OTHER_ERROR; |
---|
[5ebff60] | 459 | } |
---|
| 460 | |
---|
[84e9cea] | 461 | return STORAGE_OK; |
---|
| 462 | } |
---|
| 463 | |
---|
[a312b6b] | 464 | storage_t storage_xml = { |
---|
| 465 | .name = "xml", |
---|
| 466 | .init = xml_init, |
---|
[84e9cea] | 467 | .check_pass = xml_check_pass, |
---|
| 468 | .remove = xml_remove, |
---|
[a312b6b] | 469 | .load = xml_load, |
---|
| 470 | .save = xml_save |
---|
| 471 | }; |
---|