[e2b15bb] | 1 | /********************************************************************\ |
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| 2 | * BitlBee -- An IRC to other IM-networks gateway * |
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| 3 | * * |
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| 4 | * Copyright 2002-2008 Wilmer van der Gaast and others * |
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| 5 | \********************************************************************/ |
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| 6 | |
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| 7 | /* |
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| 8 | OTR support (cf. http://www.cypherpunks.ca/otr/) |
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[6c91e6e] | 9 | |
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[e2b15bb] | 10 | 2008, Sven Moritz Hallberg <pesco@khjk.org> |
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[6c91e6e] | 11 | (c) and funded by stonedcoder.org |
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[e2b15bb] | 12 | |
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| 13 | files used to store OTR data: |
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| 14 | <configdir>/<nick>.otr_keys |
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| 15 | <configdir>/<nick>.otr_fprints |
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| 16 | |
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| 17 | top-level todos: (search for TODO for more ;-)) |
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| 18 | integrate otr_load/otr_save with existing storage backends |
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| 19 | per-account policy settings |
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| 20 | per-user policy settings |
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| 21 | */ |
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| 22 | |
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| 23 | /* |
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| 24 | This program is free software; you can redistribute it and/or modify |
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| 25 | it under the terms of the GNU General Public License as published by |
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| 26 | the Free Software Foundation; either version 2 of the License, or |
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| 27 | (at your option) any later version. |
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| 28 | |
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| 29 | This program is distributed in the hope that it will be useful, |
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| 30 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 31 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 32 | GNU General Public License for more details. |
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| 33 | |
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| 34 | You should have received a copy of the GNU General Public License with |
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| 35 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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| 36 | if not, write to the Free Software Foundation, Inc., 59 Temple Place, |
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| 37 | Suite 330, Boston, MA 02111-1307 USA |
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| 38 | */ |
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| 39 | |
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[764c7d1] | 40 | #include "bitlbee.h" |
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| 41 | #ifdef WITH_OTR |
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| 42 | #include "irc.h" |
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| 43 | #include "otr.h" |
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| 44 | #include <sys/types.h> |
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[27db433] | 45 | #include <sys/wait.h> |
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[764c7d1] | 46 | #include <unistd.h> |
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[dc9797f] | 47 | #include <assert.h> |
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[764c7d1] | 48 | |
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| 49 | |
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| 50 | /** OTR interface routines for the OtrlMessageAppOps struct: **/ |
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| 51 | |
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| 52 | OtrlPolicy op_policy(void *opdata, ConnContext *context); |
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| 53 | |
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| 54 | void op_create_privkey(void *opdata, const char *accountname, const char *protocol); |
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| 55 | |
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| 56 | int op_is_logged_in(void *opdata, const char *accountname, const char *protocol, |
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| 57 | const char *recipient); |
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| 58 | |
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| 59 | void op_inject_message(void *opdata, const char *accountname, const char *protocol, |
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| 60 | const char *recipient, const char *message); |
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| 61 | |
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| 62 | int op_display_otr_message(void *opdata, const char *accountname, const char *protocol, |
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| 63 | const char *username, const char *msg); |
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| 64 | |
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| 65 | void op_new_fingerprint(void *opdata, OtrlUserState us, const char *accountname, |
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| 66 | const char *protocol, const char *username, unsigned char fingerprint[20]); |
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| 67 | |
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| 68 | void op_write_fingerprints(void *opdata); |
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| 69 | |
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| 70 | void op_gone_secure(void *opdata, ConnContext *context); |
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| 71 | |
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| 72 | void op_gone_insecure(void *opdata, ConnContext *context); |
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| 73 | |
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| 74 | void op_still_secure(void *opdata, ConnContext *context, int is_reply); |
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| 75 | |
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| 76 | void op_log_message(void *opdata, const char *message); |
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| 77 | |
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[a13855a] | 78 | int op_max_message_size(void *opdata, ConnContext *context); |
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[764c7d1] | 79 | |
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[a13855a] | 80 | const char *op_account_name(void *opdata, const char *account, const char *protocol); |
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[764c7d1] | 81 | |
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| 82 | |
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| 83 | /** otr sub-command handlers: **/ |
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| 84 | |
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[8521b02] | 85 | void cmd_otr_connect(irc_t *irc, char **args); |
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| 86 | void cmd_otr_disconnect(irc_t *irc, char **args); |
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[5a71d9c] | 87 | void cmd_otr_smp(irc_t *irc, char **args); |
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| 88 | void cmd_otr_trust(irc_t *irc, char **args); |
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[764c7d1] | 89 | void cmd_otr_info(irc_t *irc, char **args); |
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[94e7eb3] | 90 | void cmd_otr_keygen(irc_t *irc, char **args); |
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[c595308] | 91 | void cmd_otr_forget(irc_t *irc, char **args); |
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[764c7d1] | 92 | |
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| 93 | const command_t otr_commands[] = { |
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[8521b02] | 94 | { "connect", 1, &cmd_otr_connect, 0 }, |
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| 95 | { "disconnect", 1, &cmd_otr_disconnect, 0 }, |
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| 96 | { "smp", 2, &cmd_otr_smp, 0 }, |
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| 97 | { "trust", 6, &cmd_otr_trust, 0 }, |
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| 98 | { "info", 0, &cmd_otr_info, 0 }, |
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[94e7eb3] | 99 | { "keygen", 1, &cmd_otr_keygen, 0 }, |
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[c595308] | 100 | { "forget", 2, &cmd_otr_forget, 0 }, |
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[764c7d1] | 101 | { NULL } |
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| 102 | }; |
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| 103 | |
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| 104 | |
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| 105 | /** misc. helpers/subroutines: **/ |
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| 106 | |
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[dc9797f] | 107 | /* check whether we are already generating a key for a given account */ |
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| 108 | int keygen_in_progress(irc_t *irc, const char *handle, const char *protocol); |
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| 109 | |
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[522a00f] | 110 | /* start background process to generate a (new) key for a given account */ |
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[764c7d1] | 111 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol); |
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[c595308] | 112 | |
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[27db433] | 113 | /* main function for the forked keygen slave */ |
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| 114 | void keygen_child_main(OtrlUserState us, int infd, int outfd); |
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| 115 | |
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[522a00f] | 116 | /* mainloop handler for when a keygen finishes */ |
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[764c7d1] | 117 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond); |
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[c595308] | 118 | |
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[27db433] | 119 | /* copy the contents of file a to file b, overwriting it if it exists */ |
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| 120 | void copyfile(const char *a, const char *b); |
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| 121 | |
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| 122 | /* read one line of input from a stream, excluding trailing newline */ |
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| 123 | void myfgets(char *s, int size, FILE *stream); |
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| 124 | |
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[c595308] | 125 | /* some yes/no handlers */ |
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[764c7d1] | 126 | void yes_keygen(gpointer w, void *data); |
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[c595308] | 127 | void yes_forget_fingerprint(gpointer w, void *data); |
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| 128 | void yes_forget_context(gpointer w, void *data); |
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[5f4eede] | 129 | void yes_forget_key(gpointer w, void *data); |
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[764c7d1] | 130 | |
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| 131 | /* helper to make sure accountname and protocol match the incoming "opdata" */ |
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| 132 | struct im_connection *check_imc(void *opdata, const char *accountname, |
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| 133 | const char *protocol); |
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| 134 | |
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[5a71d9c] | 135 | /* determine the nick for a given handle/protocol pair |
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| 136 | returns "handle/protocol" if not found */ |
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[764c7d1] | 137 | const char *peernick(irc_t *irc, const char *handle, const char *protocol); |
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| 138 | |
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[8521b02] | 139 | /* turn a hexadecimal digit into its numerical value */ |
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| 140 | int hexval(char a); |
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| 141 | |
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[5a71d9c] | 142 | /* determine the user_t for a given handle/protocol pair |
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| 143 | returns NULL if not found */ |
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| 144 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol); |
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| 145 | |
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[764c7d1] | 146 | /* handle SMP TLVs from a received message */ |
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| 147 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs); |
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| 148 | |
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[5a71d9c] | 149 | /* update op/voice flag of given user according to encryption state and settings |
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| 150 | returns 0 if neither op_buddies nor voice_buddies is set to "encrypted", |
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| 151 | i.e. msgstate should be announced seperately */ |
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| 152 | int otr_update_modeflags(irc_t *irc, user_t *u); |
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| 153 | |
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[8521b02] | 154 | /* show general info about the OTR subsystem; called by 'otr info' */ |
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| 155 | void show_general_otr_info(irc_t *irc); |
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| 156 | |
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| 157 | /* show info about a given OTR context */ |
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| 158 | void show_otr_context_info(irc_t *irc, ConnContext *ctx); |
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| 159 | |
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[764c7d1] | 160 | /* show the list of fingerprints associated with a given context */ |
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| 161 | void show_fingerprints(irc_t *irc, ConnContext *ctx); |
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| 162 | |
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[c595308] | 163 | /* find a fingerprint by prefix (given as any number of hex strings) */ |
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| 164 | Fingerprint *match_fingerprint(irc_t *irc, ConnContext *ctx, const char **args); |
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| 165 | |
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[5f4eede] | 166 | /* find a private key by fingerprint prefix (given as any number of hex strings) */ |
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| 167 | OtrlPrivKey *match_privkey(irc_t *irc, const char **args); |
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| 168 | |
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[764c7d1] | 169 | |
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| 170 | /*** routines declared in otr.h: ***/ |
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| 171 | |
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| 172 | void otr_init(void) |
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| 173 | { |
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| 174 | OTRL_INIT; |
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| 175 | |
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| 176 | /* fill global OtrlMessageAppOps */ |
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| 177 | global.otr_ops.policy = &op_policy; |
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| 178 | global.otr_ops.create_privkey = &op_create_privkey; |
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| 179 | global.otr_ops.is_logged_in = &op_is_logged_in; |
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| 180 | global.otr_ops.inject_message = &op_inject_message; |
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| 181 | global.otr_ops.notify = NULL; |
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| 182 | global.otr_ops.display_otr_message = &op_display_otr_message; |
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| 183 | global.otr_ops.update_context_list = NULL; |
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| 184 | global.otr_ops.protocol_name = NULL; |
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| 185 | global.otr_ops.protocol_name_free = NULL; |
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| 186 | global.otr_ops.new_fingerprint = &op_new_fingerprint; |
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| 187 | global.otr_ops.write_fingerprints = &op_write_fingerprints; |
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| 188 | global.otr_ops.gone_secure = &op_gone_secure; |
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| 189 | global.otr_ops.gone_insecure = &op_gone_insecure; |
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| 190 | global.otr_ops.still_secure = &op_still_secure; |
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| 191 | global.otr_ops.log_message = &op_log_message; |
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[a13855a] | 192 | global.otr_ops.max_message_size = &op_max_message_size; |
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| 193 | global.otr_ops.account_name = &op_account_name; |
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[764c7d1] | 194 | global.otr_ops.account_name_free = NULL; |
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| 195 | } |
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| 196 | |
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[dc9797f] | 197 | otr_t *otr_new(void) |
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| 198 | { |
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| 199 | otr_t *otr = g_new0(otr_t, 1); |
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| 200 | |
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| 201 | otr->us = otrl_userstate_create(); |
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| 202 | |
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| 203 | return otr; |
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| 204 | } |
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| 205 | |
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| 206 | void otr_free(otr_t *otr) |
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| 207 | { |
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| 208 | otrl_userstate_free(otr->us); |
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| 209 | if(otr->keygen) { |
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| 210 | kill(otr->keygen, SIGTERM); |
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| 211 | waitpid(otr->keygen, NULL, 0); |
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| 212 | /* TODO: remove stale keygen tempfiles */ |
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| 213 | } |
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| 214 | if(otr->to) |
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| 215 | fclose(otr->to); |
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| 216 | if(otr->from) |
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| 217 | fclose(otr->from); |
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| 218 | while(otr->todo) { |
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| 219 | kg_t *p = otr->todo; |
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| 220 | otr->todo = p->next; |
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| 221 | g_free(p); |
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| 222 | } |
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| 223 | g_free(otr); |
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| 224 | } |
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| 225 | |
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[764c7d1] | 226 | void otr_load(irc_t *irc) |
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| 227 | { |
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| 228 | char s[512]; |
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| 229 | account_t *a; |
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| 230 | gcry_error_t e; |
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[522a00f] | 231 | gcry_error_t enoent = gcry_error_from_errno(ENOENT); |
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[764c7d1] | 232 | |
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| 233 | log_message(LOGLVL_DEBUG, "otr_load '%s'", irc->nick); |
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| 234 | |
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| 235 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, irc->nick); |
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[dc9797f] | 236 | e = otrl_privkey_read(irc->otr->us, s); |
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[522a00f] | 237 | if(e && e!=enoent) { |
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| 238 | irc_usermsg(irc, "otr load: %s: %s", s, gcry_strerror(e)); |
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[764c7d1] | 239 | } |
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| 240 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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[dc9797f] | 241 | e = otrl_privkey_read_fingerprints(irc->otr->us, s, NULL, NULL); |
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[522a00f] | 242 | if(e && e!=enoent) { |
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| 243 | irc_usermsg(irc, "otr load: %s: %s", s, gcry_strerror(e)); |
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[764c7d1] | 244 | } |
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| 245 | |
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| 246 | /* check for otr keys on all accounts */ |
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| 247 | for(a=irc->accounts; a; a=a->next) { |
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| 248 | otr_check_for_key(a); |
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| 249 | } |
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| 250 | } |
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| 251 | |
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| 252 | void otr_save(irc_t *irc) |
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| 253 | { |
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| 254 | char s[512]; |
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[3c80a9d] | 255 | gcry_error_t e; |
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[764c7d1] | 256 | |
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| 257 | log_message(LOGLVL_DEBUG, "otr_save '%s'", irc->nick); |
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| 258 | |
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| 259 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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[dc9797f] | 260 | e = otrl_privkey_write_fingerprints(irc->otr->us, s); |
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[3c80a9d] | 261 | if(e) { |
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[522a00f] | 262 | irc_usermsg(irc, "otr save: %s: %s", s, gcry_strerror(e)); |
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[3c80a9d] | 263 | } |
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[ef93a2f] | 264 | chmod(s, 0600); |
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[764c7d1] | 265 | } |
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| 266 | |
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| 267 | void otr_remove(const char *nick) |
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| 268 | { |
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| 269 | char s[512]; |
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| 270 | |
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| 271 | log_message(LOGLVL_DEBUG, "otr_remove '%s'", nick); |
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| 272 | |
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| 273 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, nick); |
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| 274 | unlink(s); |
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| 275 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, nick); |
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| 276 | unlink(s); |
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| 277 | } |
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| 278 | |
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| 279 | void otr_rename(const char *onick, const char *nnick) |
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| 280 | { |
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| 281 | char s[512], t[512]; |
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| 282 | |
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| 283 | log_message(LOGLVL_DEBUG, "otr_rename '%s' -> '%s'", onick, nnick); |
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| 284 | |
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| 285 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, onick); |
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| 286 | g_snprintf(t, 511, "%s%s.otr_keys", global.conf->configdir, nnick); |
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| 287 | rename(s,t); |
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| 288 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, onick); |
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| 289 | g_snprintf(t, 511, "%s%s.otr_fprints", global.conf->configdir, nnick); |
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| 290 | rename(s,t); |
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| 291 | } |
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| 292 | |
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| 293 | void otr_check_for_key(account_t *a) |
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| 294 | { |
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| 295 | irc_t *irc = a->irc; |
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[a13855a] | 296 | OtrlPrivKey *k; |
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[764c7d1] | 297 | |
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[dc9797f] | 298 | k = otrl_privkey_find(irc->otr->us, a->user, a->prpl->name); |
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[a13855a] | 299 | if(k) { |
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[dc9797f] | 300 | irc_usermsg(irc, "otr: %s/%s ready", a->user, a->prpl->name); |
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| 301 | } if(keygen_in_progress(irc, a->user, a->prpl->name)) { |
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| 302 | irc_usermsg(irc, "otr: keygen for %s/%s in progress", a->user, a->prpl->name); |
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[764c7d1] | 303 | } else { |
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| 304 | otr_keygen(irc, a->user, a->prpl->name); |
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| 305 | } |
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| 306 | } |
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| 307 | |
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| 308 | char *otr_handle_message(struct im_connection *ic, const char *handle, const char *msg) |
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| 309 | { |
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| 310 | int ignore_msg; |
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| 311 | char *newmsg = NULL; |
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| 312 | OtrlTLV *tlvs = NULL; |
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| 313 | char *colormsg; |
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| 314 | |
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[dc9797f] | 315 | ignore_msg = otrl_message_receiving(ic->irc->otr->us, &global.otr_ops, ic, |
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[764c7d1] | 316 | ic->acc->user, ic->acc->prpl->name, handle, msg, &newmsg, |
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| 317 | &tlvs, NULL, NULL); |
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| 318 | |
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| 319 | otr_handle_smp(ic, handle, tlvs); |
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| 320 | |
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| 321 | if(ignore_msg) { |
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| 322 | /* this was an internal OTR protocol message */ |
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| 323 | return NULL; |
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| 324 | } else if(!newmsg) { |
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| 325 | /* this was a non-OTR message */ |
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| 326 | return g_strdup(msg); |
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| 327 | } else { |
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| 328 | /* OTR has processed this message */ |
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[dc9797f] | 329 | ConnContext *context = otrl_context_find(ic->irc->otr->us, handle, |
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[764c7d1] | 330 | ic->acc->user, ic->acc->prpl->name, 0, NULL, NULL, NULL); |
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[5f4eede] | 331 | if(context && context->msgstate == OTRL_MSGSTATE_ENCRYPTED && |
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| 332 | set_getbool(&ic->irc->set, "color_encrypted")) { |
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[764c7d1] | 333 | /* color according to f'print trust */ |
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| 334 | char color; |
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| 335 | const char *trust = context->active_fingerprint->trust; |
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| 336 | if(trust && trust[0] != '\0') |
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| 337 | color='3'; /* green */ |
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| 338 | else |
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| 339 | color='5'; /* red */ |
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| 340 | colormsg = g_strdup_printf("\x03%c%s\x0F", color, newmsg); |
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| 341 | } else { |
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| 342 | colormsg = g_strdup(newmsg); |
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| 343 | } |
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| 344 | otrl_message_free(newmsg); |
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| 345 | return colormsg; |
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| 346 | } |
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| 347 | } |
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| 348 | |
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| 349 | int otr_send_message(struct im_connection *ic, const char *handle, const char *msg, int flags) |
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| 350 | { |
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[5a71d9c] | 351 | int st; |
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| 352 | char *otrmsg = NULL; |
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| 353 | ConnContext *ctx = NULL; |
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| 354 | |
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[dc9797f] | 355 | st = otrl_message_sending(ic->irc->otr->us, &global.otr_ops, ic, |
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[764c7d1] | 356 | ic->acc->user, ic->acc->prpl->name, handle, |
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| 357 | msg, NULL, &otrmsg, NULL, NULL); |
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| 358 | if(st) { |
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| 359 | return st; |
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| 360 | } |
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| 361 | |
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[dc9797f] | 362 | ctx = otrl_context_find(ic->irc->otr->us, |
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[764c7d1] | 363 | handle, ic->acc->user, ic->acc->prpl->name, |
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| 364 | 1, NULL, NULL, NULL); |
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| 365 | |
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| 366 | if(otrmsg) { |
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| 367 | if(!ctx) { |
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| 368 | otrl_message_free(otrmsg); |
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| 369 | return 1; |
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| 370 | } |
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| 371 | st = otrl_message_fragment_and_send(&global.otr_ops, ic, ctx, |
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| 372 | otrmsg, OTRL_FRAGMENT_SEND_ALL, NULL); |
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| 373 | otrl_message_free(otrmsg); |
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| 374 | } else { |
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[e2b15bb] | 375 | /* note: otrl_message_sending handles policy, so that if REQUIRE_ENCRYPTION is set, |
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| 376 | this case does not occur */ |
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[764c7d1] | 377 | st = ic->acc->prpl->buddy_msg( ic, (char *)handle, (char *)msg, flags ); |
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| 378 | } |
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| 379 | |
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| 380 | return st; |
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| 381 | } |
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| 382 | |
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| 383 | void cmd_otr(irc_t *irc, char **args) |
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| 384 | { |
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| 385 | const command_t *cmd; |
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| 386 | |
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| 387 | if(!args[0]) |
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| 388 | return; |
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| 389 | |
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| 390 | if(!args[1]) |
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| 391 | return; |
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| 392 | |
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| 393 | for(cmd=otr_commands; cmd->command; cmd++) { |
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| 394 | if(strcmp(cmd->command, args[1]) == 0) |
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| 395 | break; |
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| 396 | } |
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| 397 | |
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| 398 | if(!cmd->command) { |
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[c595308] | 399 | irc_usermsg(irc, "%s: unknown subcommand \"%s\", see \x02help otr\x02", |
---|
[764c7d1] | 400 | args[0], args[1]); |
---|
| 401 | return; |
---|
| 402 | } |
---|
| 403 | |
---|
| 404 | if(!args[cmd->required_parameters+1]) { |
---|
| 405 | irc_usermsg(irc, "%s %s: not enough arguments (%d req.)", |
---|
| 406 | args[0], args[1], cmd->required_parameters); |
---|
| 407 | return; |
---|
| 408 | } |
---|
| 409 | |
---|
| 410 | cmd->execute(irc, args+1); |
---|
| 411 | } |
---|
| 412 | |
---|
| 413 | |
---|
| 414 | /*** OTR "MessageAppOps" callbacks for global.otr_ui: ***/ |
---|
| 415 | |
---|
| 416 | OtrlPolicy op_policy(void *opdata, ConnContext *context) |
---|
| 417 | { |
---|
[e2b15bb] | 418 | struct im_connection *ic = check_imc(opdata, context->accountname, context->protocol); |
---|
| 419 | const char *p; |
---|
[dc9797f] | 420 | |
---|
| 421 | log_message(LOGLVL_DEBUG, "op_policy '%s' '%s'", context->accountname, context->protocol); |
---|
| 422 | |
---|
| 423 | /* policy override during keygen: if we're missing the key for context but are currently |
---|
| 424 | generating it, then that's as much as we can do. => temporarily return NEVER. */ |
---|
| 425 | if(keygen_in_progress(ic->irc, context->accountname, context->protocol) && |
---|
| 426 | !otrl_privkey_find(ic->irc->otr->us, context->accountname, context->protocol)) |
---|
| 427 | return OTRL_POLICY_NEVER; |
---|
[e2b15bb] | 428 | |
---|
| 429 | p = set_getstr(&ic->irc->set, "otr_policy"); |
---|
| 430 | if(!strcmp(p, "never")) |
---|
| 431 | return OTRL_POLICY_NEVER; |
---|
| 432 | if(!strcmp(p, "opportunistic")) |
---|
| 433 | return OTRL_POLICY_OPPORTUNISTIC; |
---|
| 434 | if(!strcmp(p, "manual")) |
---|
| 435 | return OTRL_POLICY_MANUAL; |
---|
| 436 | if(!strcmp(p, "always")) |
---|
| 437 | return OTRL_POLICY_ALWAYS; |
---|
| 438 | |
---|
[764c7d1] | 439 | return OTRL_POLICY_OPPORTUNISTIC; |
---|
| 440 | } |
---|
| 441 | |
---|
| 442 | void op_create_privkey(void *opdata, const char *accountname, |
---|
| 443 | const char *protocol) |
---|
| 444 | { |
---|
| 445 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 446 | |
---|
| 447 | log_message(LOGLVL_DEBUG, "op_create_privkey '%s' '%s'", accountname, protocol); |
---|
| 448 | |
---|
[dc9797f] | 449 | /* will fail silently if keygen already in progress */ |
---|
| 450 | otr_keygen(ic->irc, accountname, protocol); |
---|
[764c7d1] | 451 | } |
---|
| 452 | |
---|
| 453 | int op_is_logged_in(void *opdata, const char *accountname, |
---|
| 454 | const char *protocol, const char *recipient) |
---|
| 455 | { |
---|
| 456 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 457 | user_t *u; |
---|
| 458 | |
---|
| 459 | log_message(LOGLVL_DEBUG, "op_is_logged_in '%s' '%s' '%s'", accountname, protocol, recipient); |
---|
| 460 | |
---|
| 461 | /* lookup the user_t for the given recipient */ |
---|
| 462 | u = user_findhandle(ic, recipient); |
---|
| 463 | if(u) { |
---|
| 464 | if(u->online) |
---|
| 465 | return 1; |
---|
| 466 | else |
---|
| 467 | return 0; |
---|
| 468 | } else { |
---|
| 469 | return -1; |
---|
| 470 | } |
---|
| 471 | } |
---|
| 472 | |
---|
| 473 | void op_inject_message(void *opdata, const char *accountname, |
---|
| 474 | const char *protocol, const char *recipient, const char *message) |
---|
| 475 | { |
---|
| 476 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 477 | |
---|
| 478 | log_message(LOGLVL_DEBUG, "op_inject_message '%s' '%s' '%s' '%s'", accountname, protocol, recipient, message); |
---|
| 479 | |
---|
| 480 | if (strcmp(accountname, recipient) == 0) { |
---|
| 481 | /* huh? injecting messages to myself? */ |
---|
| 482 | irc_usermsg(ic->irc, "note to self: %s", message); |
---|
| 483 | } else { |
---|
| 484 | /* need to drop some consts here :-( */ |
---|
| 485 | /* TODO: get flags into op_inject_message?! */ |
---|
| 486 | ic->acc->prpl->buddy_msg(ic, (char *)recipient, (char *)message, 0); |
---|
| 487 | /* ignoring return value :-/ */ |
---|
| 488 | } |
---|
| 489 | } |
---|
| 490 | |
---|
| 491 | int op_display_otr_message(void *opdata, const char *accountname, |
---|
[5a71d9c] | 492 | const char *protocol, const char *username, const char *message) |
---|
[764c7d1] | 493 | { |
---|
| 494 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[5a71d9c] | 495 | char *msg = g_strdup(message); |
---|
[764c7d1] | 496 | |
---|
[5a71d9c] | 497 | log_message(LOGLVL_DEBUG, "op_display_otr_message '%s' '%s' '%s' '%s'", accountname, protocol, username, message); |
---|
[764c7d1] | 498 | |
---|
[5a71d9c] | 499 | strip_html(msg); |
---|
| 500 | irc_usermsg(ic->irc, "otr: %s", msg); |
---|
[764c7d1] | 501 | |
---|
[5a71d9c] | 502 | g_free(msg); |
---|
[764c7d1] | 503 | return 0; |
---|
| 504 | } |
---|
| 505 | |
---|
| 506 | void op_new_fingerprint(void *opdata, OtrlUserState us, |
---|
| 507 | const char *accountname, const char *protocol, |
---|
| 508 | const char *username, unsigned char fingerprint[20]) |
---|
| 509 | { |
---|
| 510 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 511 | char hunam[45]; /* anybody looking? ;-) */ |
---|
| 512 | |
---|
| 513 | otrl_privkey_hash_to_human(hunam, fingerprint); |
---|
| 514 | log_message(LOGLVL_DEBUG, "op_new_fingerprint '%s' '%s' '%s' '%s'", accountname, protocol, username, hunam); |
---|
| 515 | |
---|
| 516 | irc_usermsg(ic->irc, "new fingerprint for %s: %s", |
---|
| 517 | peernick(ic->irc, username, protocol), hunam); |
---|
| 518 | } |
---|
| 519 | |
---|
| 520 | void op_write_fingerprints(void *opdata) |
---|
| 521 | { |
---|
| 522 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 523 | |
---|
| 524 | log_message(LOGLVL_DEBUG, "op_write_fingerprints"); |
---|
| 525 | |
---|
| 526 | otr_save(ic->irc); |
---|
| 527 | } |
---|
| 528 | |
---|
| 529 | void op_gone_secure(void *opdata, ConnContext *context) |
---|
| 530 | { |
---|
| 531 | struct im_connection *ic = |
---|
| 532 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 533 | user_t *u; |
---|
[c595308] | 534 | const char *trust; |
---|
[764c7d1] | 535 | |
---|
| 536 | log_message(LOGLVL_DEBUG, "op_gone_secure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 537 | |
---|
[5a71d9c] | 538 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 539 | if(!u) { |
---|
| 540 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 541 | "BUG: otr.c: op_gone_secure: user_t for %s/%s/%s not found!", |
---|
| 542 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 543 | return; |
---|
| 544 | } |
---|
[c595308] | 545 | |
---|
| 546 | trust = context->active_fingerprint->trust; |
---|
| 547 | if(trust && trust[0]) |
---|
[5a71d9c] | 548 | u->encrypted = 2; |
---|
| 549 | else |
---|
| 550 | u->encrypted = 1; |
---|
| 551 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 552 | irc_usermsg(ic->irc, "conversation with %s is now off the record", u->nick); |
---|
[764c7d1] | 553 | } |
---|
| 554 | |
---|
| 555 | void op_gone_insecure(void *opdata, ConnContext *context) |
---|
| 556 | { |
---|
| 557 | struct im_connection *ic = |
---|
| 558 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 559 | user_t *u; |
---|
[764c7d1] | 560 | |
---|
| 561 | log_message(LOGLVL_DEBUG, "op_gone_insecure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 562 | |
---|
[5a71d9c] | 563 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 564 | if(!u) { |
---|
| 565 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 566 | "BUG: otr.c: op_gone_insecure: user_t for %s/%s/%s not found!", |
---|
| 567 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 568 | return; |
---|
| 569 | } |
---|
| 570 | u->encrypted = 0; |
---|
| 571 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 572 | irc_usermsg(ic->irc, "conversation with %s is now in the clear", u->nick); |
---|
[764c7d1] | 573 | } |
---|
| 574 | |
---|
| 575 | void op_still_secure(void *opdata, ConnContext *context, int is_reply) |
---|
| 576 | { |
---|
| 577 | struct im_connection *ic = |
---|
| 578 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 579 | user_t *u; |
---|
[764c7d1] | 580 | |
---|
| 581 | log_message(LOGLVL_DEBUG, "op_still_secure '%s' '%s' '%s' is_reply=%d", |
---|
| 582 | context->accountname, context->protocol, context->username, is_reply); |
---|
| 583 | |
---|
[5a71d9c] | 584 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 585 | if(!u) { |
---|
| 586 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 587 | "BUG: otr.c: op_still_secure: user_t for %s/%s/%s not found!", |
---|
| 588 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 589 | return; |
---|
| 590 | } |
---|
| 591 | if(context->active_fingerprint->trust[0]) |
---|
| 592 | u->encrypted = 2; |
---|
| 593 | else |
---|
| 594 | u->encrypted = 1; |
---|
| 595 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 596 | irc_usermsg(ic->irc, "otr connection with %s has been refreshed", u->nick); |
---|
[764c7d1] | 597 | } |
---|
| 598 | |
---|
| 599 | void op_log_message(void *opdata, const char *message) |
---|
| 600 | { |
---|
[5a71d9c] | 601 | char *msg = g_strdup(message); |
---|
| 602 | |
---|
| 603 | strip_html(msg); |
---|
| 604 | log_message(LOGLVL_INFO, "otr: %s", msg); |
---|
| 605 | g_free(msg); |
---|
[764c7d1] | 606 | } |
---|
| 607 | |
---|
[a13855a] | 608 | int op_max_message_size(void *opdata, ConnContext *context) |
---|
| 609 | { |
---|
[5a71d9c] | 610 | struct im_connection *ic = |
---|
| 611 | check_imc(opdata, context->accountname, context->protocol); |
---|
| 612 | |
---|
| 613 | return ic->acc->prpl->mms; |
---|
[a13855a] | 614 | } |
---|
| 615 | |
---|
| 616 | const char *op_account_name(void *opdata, const char *account, const char *protocol) |
---|
| 617 | { |
---|
| 618 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 619 | |
---|
| 620 | log_message(LOGLVL_DEBUG, "op_account_name '%s' '%s'", account, protocol); |
---|
| 621 | |
---|
| 622 | return peernick(ic->irc, account, protocol); |
---|
| 623 | } |
---|
| 624 | |
---|
[764c7d1] | 625 | |
---|
| 626 | /*** OTR sub-command handlers ***/ |
---|
| 627 | |
---|
[8521b02] | 628 | void cmd_otr_disconnect(irc_t *irc, char **args) |
---|
[764c7d1] | 629 | { |
---|
| 630 | user_t *u; |
---|
| 631 | |
---|
| 632 | u = user_find(irc, args[1]); |
---|
| 633 | if(!u || !u->ic) { |
---|
| 634 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 635 | return; |
---|
| 636 | } |
---|
| 637 | |
---|
[dc9797f] | 638 | otrl_message_disconnect(irc->otr->us, &global.otr_ops, |
---|
[764c7d1] | 639 | u->ic, u->ic->acc->user, u->ic->acc->prpl->name, u->handle); |
---|
[c595308] | 640 | |
---|
| 641 | /* for some reason, libotr (3.1.0) doesn't do this itself: */ |
---|
| 642 | if(u->encrypted) { |
---|
| 643 | ConnContext *ctx; |
---|
[dc9797f] | 644 | ctx = otrl_context_find(irc->otr->us, u->handle, u->ic->acc->user, |
---|
[c595308] | 645 | u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 646 | if(ctx) |
---|
| 647 | op_gone_insecure(u->ic, ctx); |
---|
| 648 | else /* huh? */ |
---|
| 649 | u->encrypted = 0; |
---|
| 650 | } |
---|
[764c7d1] | 651 | } |
---|
| 652 | |
---|
[8521b02] | 653 | void cmd_otr_connect(irc_t *irc, char **args) |
---|
[764c7d1] | 654 | { |
---|
| 655 | user_t *u; |
---|
| 656 | |
---|
| 657 | u = user_find(irc, args[1]); |
---|
| 658 | if(!u || !u->ic) { |
---|
| 659 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 660 | return; |
---|
| 661 | } |
---|
| 662 | if(!u->online) { |
---|
| 663 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 664 | return; |
---|
| 665 | } |
---|
| 666 | |
---|
| 667 | imc_buddy_msg(u->ic, u->handle, "?OTR?", 0); |
---|
| 668 | } |
---|
| 669 | |
---|
[5a71d9c] | 670 | void cmd_otr_smp(irc_t *irc, char **args) |
---|
[764c7d1] | 671 | { |
---|
| 672 | user_t *u; |
---|
| 673 | ConnContext *ctx; |
---|
| 674 | |
---|
| 675 | u = user_find(irc, args[1]); |
---|
| 676 | if(!u || !u->ic) { |
---|
| 677 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 678 | return; |
---|
| 679 | } |
---|
| 680 | if(!u->online) { |
---|
| 681 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 682 | return; |
---|
| 683 | } |
---|
| 684 | |
---|
[dc9797f] | 685 | ctx = otrl_context_find(irc->otr->us, u->handle, |
---|
[764c7d1] | 686 | u->ic->acc->user, u->ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
| 687 | if(!ctx) { |
---|
[3c80a9d] | 688 | /* huh? out of memory or what? */ |
---|
[764c7d1] | 689 | return; |
---|
| 690 | } |
---|
| 691 | |
---|
| 692 | if(ctx->smstate->nextExpected != OTRL_SMP_EXPECT1) { |
---|
| 693 | log_message(LOGLVL_INFO, |
---|
| 694 | "SMP already in phase %d, sending abort before reinitiating", |
---|
| 695 | ctx->smstate->nextExpected+1); |
---|
[dc9797f] | 696 | otrl_message_abort_smp(irc->otr->us, &global.otr_ops, u->ic, ctx); |
---|
[764c7d1] | 697 | otrl_sm_state_free(ctx->smstate); |
---|
| 698 | } |
---|
| 699 | |
---|
| 700 | /* warning: the following assumes that smstates are cleared whenever an SMP |
---|
| 701 | is completed or aborted! */ |
---|
| 702 | if(ctx->smstate->secret == NULL) { |
---|
| 703 | irc_usermsg(irc, "smp: initiating with %s...", u->nick); |
---|
[dc9797f] | 704 | otrl_message_initiate_smp(irc->otr->us, &global.otr_ops, |
---|
[764c7d1] | 705 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 706 | /* smp is now in EXPECT2 */ |
---|
| 707 | } else { |
---|
| 708 | /* if we're still in EXPECT1 but smstate is initialized, we must have |
---|
| 709 | received the SMP1, so let's issue a response */ |
---|
| 710 | irc_usermsg(irc, "smp: responding to %s...", u->nick); |
---|
[dc9797f] | 711 | otrl_message_respond_smp(irc->otr->us, &global.otr_ops, |
---|
[764c7d1] | 712 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 713 | /* smp is now in EXPECT3 */ |
---|
| 714 | } |
---|
| 715 | } |
---|
| 716 | |
---|
[5a71d9c] | 717 | void cmd_otr_trust(irc_t *irc, char **args) |
---|
| 718 | { |
---|
| 719 | user_t *u; |
---|
| 720 | ConnContext *ctx; |
---|
| 721 | unsigned char raw[20]; |
---|
| 722 | Fingerprint *fp; |
---|
| 723 | int i,j; |
---|
| 724 | |
---|
| 725 | u = user_find(irc, args[1]); |
---|
| 726 | if(!u || !u->ic) { |
---|
| 727 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 728 | return; |
---|
| 729 | } |
---|
| 730 | |
---|
[dc9797f] | 731 | ctx = otrl_context_find(irc->otr->us, u->handle, |
---|
[5a71d9c] | 732 | u->ic->acc->user, u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 733 | if(!ctx) { |
---|
| 734 | irc_usermsg(irc, "%s: no otr context with user", args[1]); |
---|
| 735 | return; |
---|
| 736 | } |
---|
| 737 | |
---|
| 738 | /* convert given fingerprint to raw representation */ |
---|
| 739 | for(i=0; i<5; i++) { |
---|
| 740 | for(j=0; j<4; j++) { |
---|
| 741 | char *p = args[2+i]+(2*j); |
---|
| 742 | char *q = p+1; |
---|
| 743 | int x, y; |
---|
| 744 | |
---|
| 745 | if(!*p || !*q) { |
---|
| 746 | irc_usermsg(irc, "failed: truncated fingerprint block %d", i+1); |
---|
| 747 | return; |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | x = hexval(*p); |
---|
| 751 | y = hexval(*q); |
---|
| 752 | if(x<0) { |
---|
| 753 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+1, i+1); |
---|
| 754 | return; |
---|
| 755 | } |
---|
| 756 | if(y<0) { |
---|
| 757 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+2, i+1); |
---|
| 758 | return; |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | raw[i*4+j] = x*16 + y; |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | fp = otrl_context_find_fingerprint(ctx, raw, 0, NULL); |
---|
| 765 | if(!fp) { |
---|
| 766 | irc_usermsg(irc, "failed: no such fingerprint for %s", args[1]); |
---|
| 767 | } else { |
---|
| 768 | char *trust = args[7] ? args[7] : "affirmed"; |
---|
| 769 | otrl_context_set_trust(fp, trust); |
---|
| 770 | irc_usermsg(irc, "fingerprint match, trust set to \"%s\"", trust); |
---|
| 771 | if(u->encrypted) |
---|
| 772 | u->encrypted = 2; |
---|
| 773 | otr_update_modeflags(irc, u); |
---|
| 774 | } |
---|
| 775 | } |
---|
| 776 | |
---|
[8521b02] | 777 | void cmd_otr_info(irc_t *irc, char **args) |
---|
[764c7d1] | 778 | { |
---|
[8521b02] | 779 | if(!args[1]) { |
---|
| 780 | show_general_otr_info(irc); |
---|
[764c7d1] | 781 | } else { |
---|
[8521b02] | 782 | char *arg = g_strdup(args[1]); |
---|
| 783 | char *myhandle, *handle, *protocol; |
---|
[764c7d1] | 784 | ConnContext *ctx; |
---|
[8521b02] | 785 | |
---|
| 786 | /* interpret arg as 'user/protocol/account' if possible */ |
---|
| 787 | protocol = strchr(arg, '/'); |
---|
| 788 | if(protocol) { |
---|
| 789 | *(protocol++) = '\0'; |
---|
| 790 | myhandle = strchr(protocol, '/'); |
---|
[764c7d1] | 791 | } |
---|
[8521b02] | 792 | if(protocol && myhandle) { |
---|
| 793 | *(myhandle++) = '\0'; |
---|
| 794 | handle = arg; |
---|
[dc9797f] | 795 | ctx = otrl_context_find(irc->otr->us, handle, myhandle, protocol, 0, NULL, NULL, NULL); |
---|
[8521b02] | 796 | if(!ctx) { |
---|
[c595308] | 797 | irc_usermsg(irc, "no such context"); |
---|
[8521b02] | 798 | g_free(arg); |
---|
| 799 | return; |
---|
| 800 | } |
---|
[764c7d1] | 801 | } else { |
---|
[8521b02] | 802 | user_t *u = user_find(irc, args[1]); |
---|
| 803 | if(!u || !u->ic) { |
---|
| 804 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 805 | g_free(arg); |
---|
| 806 | return; |
---|
[5a71d9c] | 807 | } |
---|
[dc9797f] | 808 | ctx = otrl_context_find(irc->otr->us, u->handle, u->ic->acc->user, |
---|
[8521b02] | 809 | u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 810 | if(!ctx) { |
---|
| 811 | irc_usermsg(irc, "no otr context with %s", args[1]); |
---|
| 812 | g_free(arg); |
---|
| 813 | return; |
---|
| 814 | } |
---|
| 815 | } |
---|
| 816 | |
---|
| 817 | /* show how we resolved the (nick) argument, if we did */ |
---|
| 818 | if(handle!=arg) { |
---|
| 819 | irc_usermsg(irc, "%s is %s/%s; we are %s/%s to them", args[1], |
---|
| 820 | ctx->username, ctx->protocol, ctx->accountname, ctx->protocol); |
---|
[764c7d1] | 821 | } |
---|
[8521b02] | 822 | show_otr_context_info(irc, ctx); |
---|
| 823 | g_free(arg); |
---|
[764c7d1] | 824 | } |
---|
| 825 | } |
---|
| 826 | |
---|
[94e7eb3] | 827 | void cmd_otr_keygen(irc_t *irc, char **args) |
---|
| 828 | { |
---|
| 829 | int i, n; |
---|
| 830 | account_t *a; |
---|
| 831 | |
---|
| 832 | n = atoi(args[1]); |
---|
| 833 | if(n<0 || (!n && strcmp(args[1], "0"))) { |
---|
| 834 | irc_usermsg(irc, "%s: invalid account number", args[1]); |
---|
| 835 | return; |
---|
| 836 | } |
---|
| 837 | |
---|
| 838 | a = irc->accounts; |
---|
| 839 | for(i=0; i<n && a; i++, a=a->next); |
---|
| 840 | if(!a) { |
---|
| 841 | irc_usermsg(irc, "%s: no such account", args[1]); |
---|
| 842 | return; |
---|
| 843 | } |
---|
| 844 | |
---|
[dc9797f] | 845 | if(keygen_in_progress(irc, a->user, a->prpl->name)) { |
---|
| 846 | irc_usermsg(irc, "keygen for account %d already in progress", n); |
---|
| 847 | return; |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | if(otrl_privkey_find(irc->otr->us, a->user, a->prpl->name)) { |
---|
[94e7eb3] | 851 | char *s = g_strdup_printf("account %d already has a key, replace it?", n); |
---|
[5f4eede] | 852 | query_add(irc, NULL, s, yes_keygen, NULL, a); |
---|
[94e7eb3] | 853 | } else { |
---|
| 854 | otr_keygen(irc, a->user, a->prpl->name); |
---|
| 855 | } |
---|
| 856 | } |
---|
| 857 | |
---|
[c595308] | 858 | void yes_forget_fingerprint(gpointer w, void *data) |
---|
| 859 | { |
---|
[5f4eede] | 860 | irc_t *irc = (irc_t *)w; |
---|
[c595308] | 861 | Fingerprint *fp = (Fingerprint *)data; |
---|
| 862 | |
---|
| 863 | if(fp == fp->context->active_fingerprint) { |
---|
[5f4eede] | 864 | irc_usermsg(irc, "that fingerprint is active, terminate otr connection first"); |
---|
[c595308] | 865 | return; |
---|
| 866 | } |
---|
| 867 | |
---|
| 868 | otrl_context_forget_fingerprint(fp, 0); |
---|
| 869 | } |
---|
| 870 | |
---|
| 871 | void yes_forget_context(gpointer w, void *data) |
---|
| 872 | { |
---|
[5f4eede] | 873 | irc_t *irc = (irc_t *)w; |
---|
[c595308] | 874 | ConnContext *ctx = (ConnContext *)data; |
---|
| 875 | |
---|
| 876 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
[5f4eede] | 877 | irc_usermsg(irc, "active otr connection with %s, terminate it first", |
---|
| 878 | peernick(irc, ctx->username, ctx->protocol)); |
---|
[c595308] | 879 | return; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | if(ctx->msgstate == OTRL_MSGSTATE_FINISHED) |
---|
| 883 | otrl_context_force_plaintext(ctx); |
---|
| 884 | otrl_context_forget(ctx); |
---|
| 885 | } |
---|
| 886 | |
---|
[5f4eede] | 887 | void yes_forget_key(gpointer w, void *data) |
---|
| 888 | { |
---|
| 889 | OtrlPrivKey *key = (OtrlPrivKey *)data; |
---|
| 890 | |
---|
| 891 | /* FIXME: For some reason which /completely eludes me/, this call keeps |
---|
| 892 | barfing on the gcry_sexp_release inside (invalid pointer free). */ |
---|
| 893 | otrl_privkey_forget(key); |
---|
| 894 | } |
---|
| 895 | |
---|
[c595308] | 896 | void cmd_otr_forget(irc_t *irc, char **args) |
---|
| 897 | { |
---|
| 898 | if(!strcmp(args[1], "fingerprint")) |
---|
| 899 | { |
---|
| 900 | user_t *u; |
---|
| 901 | ConnContext *ctx; |
---|
| 902 | Fingerprint *fp; |
---|
| 903 | char human[54]; |
---|
| 904 | char *s; |
---|
| 905 | |
---|
| 906 | if(!args[3]) { |
---|
| 907 | irc_usermsg(irc, "otr %s %s: not enough arguments (2 req.)", args[0], args[1]); |
---|
| 908 | return; |
---|
| 909 | } |
---|
| 910 | |
---|
[e2b15bb] | 911 | /* TODO: allow context specs ("user/proto/account") in 'otr forget fingerprint'? */ |
---|
[c595308] | 912 | u = user_find(irc, args[2]); |
---|
| 913 | if(!u || !u->ic) { |
---|
| 914 | irc_usermsg(irc, "%s: unknown user", args[2]); |
---|
| 915 | return; |
---|
| 916 | } |
---|
| 917 | |
---|
[dc9797f] | 918 | ctx = otrl_context_find(irc->otr->us, u->handle, u->ic->acc->user, |
---|
[c595308] | 919 | u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 920 | if(!ctx) { |
---|
| 921 | irc_usermsg(irc, "no otr context with %s", args[2]); |
---|
| 922 | return; |
---|
| 923 | } |
---|
| 924 | |
---|
| 925 | fp = match_fingerprint(irc, ctx, ((const char **)args)+3); |
---|
| 926 | if(!fp) { |
---|
| 927 | /* match_fingerprint does error messages */ |
---|
| 928 | return; |
---|
| 929 | } |
---|
| 930 | |
---|
| 931 | if(fp == ctx->active_fingerprint) { |
---|
| 932 | irc_usermsg(irc, "that fingerprint is active, terminate otr connection first"); |
---|
| 933 | return; |
---|
| 934 | } |
---|
| 935 | |
---|
| 936 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 937 | s = g_strdup_printf("about to forget fingerprint %s, are you sure?", human); |
---|
[5f4eede] | 938 | query_add(irc, NULL, s, yes_forget_fingerprint, NULL, fp); |
---|
[c595308] | 939 | } |
---|
| 940 | |
---|
| 941 | else if(!strcmp(args[1], "context")) |
---|
| 942 | { |
---|
| 943 | user_t *u; |
---|
| 944 | ConnContext *ctx; |
---|
| 945 | char *s; |
---|
| 946 | |
---|
[e2b15bb] | 947 | /* TODO: allow context specs ("user/proto/account") in 'otr forget contex'? */ |
---|
[c595308] | 948 | u = user_find(irc, args[2]); |
---|
| 949 | if(!u || !u->ic) { |
---|
| 950 | irc_usermsg(irc, "%s: unknown user", args[2]); |
---|
| 951 | return; |
---|
| 952 | } |
---|
| 953 | |
---|
[dc9797f] | 954 | ctx = otrl_context_find(irc->otr->us, u->handle, u->ic->acc->user, |
---|
[c595308] | 955 | u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 956 | if(!ctx) { |
---|
| 957 | irc_usermsg(irc, "no otr context with %s", args[2]); |
---|
| 958 | return; |
---|
| 959 | } |
---|
| 960 | |
---|
| 961 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 962 | irc_usermsg(irc, "active otr connection with %s, terminate it first", args[2]); |
---|
| 963 | return; |
---|
| 964 | } |
---|
| 965 | |
---|
| 966 | s = g_strdup_printf("about to forget otr data about %s, are you sure?", args[2]); |
---|
[5f4eede] | 967 | query_add(irc, NULL, s, yes_forget_context, NULL, ctx); |
---|
[c595308] | 968 | } |
---|
| 969 | |
---|
| 970 | else if(!strcmp(args[1], "key")) |
---|
| 971 | { |
---|
[5f4eede] | 972 | OtrlPrivKey *key; |
---|
| 973 | char *s; |
---|
| 974 | |
---|
| 975 | key = match_privkey(irc, ((const char **)args)+2); |
---|
| 976 | if(!key) { |
---|
| 977 | /* match_privkey does error messages */ |
---|
| 978 | return; |
---|
| 979 | } |
---|
| 980 | |
---|
| 981 | /* TODO: Find out why 'otr forget key' barfs (cf. yes_forget_key) */ |
---|
| 982 | irc_usermsg(irc, "otr %s %s: not implemented, please edit \x02%s%s.otr_keys\x02 manually :-/", |
---|
| 983 | args[0], args[1], global.conf->configdir, irc->nick); |
---|
| 984 | return; |
---|
| 985 | |
---|
| 986 | s = g_strdup_printf("about to forget the private key for %s/%s, are you sure?", |
---|
| 987 | key->accountname, key->protocol); |
---|
| 988 | query_add(irc, NULL, s, yes_forget_key, NULL, key); |
---|
[c595308] | 989 | } |
---|
| 990 | |
---|
| 991 | else |
---|
| 992 | { |
---|
| 993 | irc_usermsg(irc, "otr %s: unknown subcommand \"%s\", see \x02help otr forget\x02", |
---|
| 994 | args[0], args[1]); |
---|
| 995 | } |
---|
| 996 | } |
---|
| 997 | |
---|
[764c7d1] | 998 | |
---|
| 999 | /*** local helpers / subroutines: ***/ |
---|
| 1000 | |
---|
| 1001 | /* Socialist Millionaires' Protocol */ |
---|
| 1002 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs) |
---|
| 1003 | { |
---|
| 1004 | irc_t *irc = ic->irc; |
---|
[dc9797f] | 1005 | OtrlUserState us = irc->otr->us; |
---|
[764c7d1] | 1006 | OtrlMessageAppOps *ops = &global.otr_ops; |
---|
| 1007 | OtrlTLV *tlv = NULL; |
---|
| 1008 | ConnContext *context; |
---|
| 1009 | NextExpectedSMP nextMsg; |
---|
| 1010 | user_t *u; |
---|
| 1011 | |
---|
| 1012 | u = user_findhandle(ic, handle); |
---|
| 1013 | if(!u) return; |
---|
| 1014 | context = otrl_context_find(us, handle, |
---|
| 1015 | ic->acc->user, ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
[3c80a9d] | 1016 | if(!context) { |
---|
| 1017 | /* huh? out of memory or what? */ |
---|
| 1018 | return; |
---|
| 1019 | } |
---|
[764c7d1] | 1020 | nextMsg = context->smstate->nextExpected; |
---|
| 1021 | |
---|
| 1022 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP1); |
---|
| 1023 | if (tlv) { |
---|
| 1024 | if (nextMsg != OTRL_SMP_EXPECT1) { |
---|
| 1025 | irc_usermsg(irc, "smp %s: spurious SMP1 received, aborting", u->nick); |
---|
| 1026 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 1027 | otrl_sm_state_free(context->smstate); |
---|
| 1028 | } else { |
---|
| 1029 | irc_usermsg(irc, "smp: initiated by %s" |
---|
| 1030 | " - respond with \x02otr smp %s <secret>\x02", |
---|
| 1031 | u->nick, u->nick); |
---|
| 1032 | /* smp stays in EXPECT1 until user responds */ |
---|
| 1033 | } |
---|
| 1034 | } |
---|
| 1035 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP2); |
---|
| 1036 | if (tlv) { |
---|
| 1037 | if (nextMsg != OTRL_SMP_EXPECT2) { |
---|
| 1038 | irc_usermsg(irc, "smp %s: spurious SMP2 received, aborting", u->nick); |
---|
| 1039 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 1040 | otrl_sm_state_free(context->smstate); |
---|
| 1041 | } else { |
---|
| 1042 | /* SMP2 received, otrl_message_receiving will have sent SMP3 */ |
---|
| 1043 | context->smstate->nextExpected = OTRL_SMP_EXPECT4; |
---|
| 1044 | } |
---|
| 1045 | } |
---|
| 1046 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP3); |
---|
| 1047 | if (tlv) { |
---|
| 1048 | if (nextMsg != OTRL_SMP_EXPECT3) { |
---|
| 1049 | irc_usermsg(irc, "smp %s: spurious SMP3 received, aborting", u->nick); |
---|
| 1050 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 1051 | otrl_sm_state_free(context->smstate); |
---|
| 1052 | } else { |
---|
| 1053 | /* SMP3 received, otrl_message_receiving will have sent SMP4 and set fp trust */ |
---|
| 1054 | const char *trust = context->active_fingerprint->trust; |
---|
| 1055 | if(!trust || trust[0]=='\0') { |
---|
| 1056 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 1057 | u->nick); |
---|
| 1058 | } else { |
---|
| 1059 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 1060 | u->nick); |
---|
| 1061 | } |
---|
| 1062 | otrl_sm_state_free(context->smstate); |
---|
| 1063 | /* smp is in back in EXPECT1 */ |
---|
| 1064 | } |
---|
| 1065 | } |
---|
| 1066 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP4); |
---|
| 1067 | if (tlv) { |
---|
| 1068 | if (nextMsg != OTRL_SMP_EXPECT4) { |
---|
| 1069 | irc_usermsg(irc, "smp %s: spurious SMP4 received, aborting", u->nick); |
---|
| 1070 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 1071 | otrl_sm_state_free(context->smstate); |
---|
| 1072 | } else { |
---|
| 1073 | /* SMP4 received, otrl_message_receiving will have set fp trust */ |
---|
| 1074 | const char *trust = context->active_fingerprint->trust; |
---|
| 1075 | if(!trust || trust[0]=='\0') { |
---|
| 1076 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 1077 | u->nick); |
---|
| 1078 | } else { |
---|
| 1079 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 1080 | u->nick); |
---|
| 1081 | } |
---|
| 1082 | otrl_sm_state_free(context->smstate); |
---|
| 1083 | /* smp is in back in EXPECT1 */ |
---|
| 1084 | } |
---|
| 1085 | } |
---|
| 1086 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP_ABORT); |
---|
| 1087 | if (tlv) { |
---|
| 1088 | irc_usermsg(irc, "smp: received abort from %s", u->nick); |
---|
| 1089 | otrl_sm_state_free(context->smstate); |
---|
| 1090 | /* smp is in back in EXPECT1 */ |
---|
| 1091 | } |
---|
| 1092 | } |
---|
| 1093 | |
---|
| 1094 | /* helper to assert that account and protocol names given to ops below always |
---|
| 1095 | match the im_connection passed through as opdata */ |
---|
| 1096 | struct im_connection *check_imc(void *opdata, const char *accountname, |
---|
| 1097 | const char *protocol) |
---|
| 1098 | { |
---|
| 1099 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 1100 | |
---|
| 1101 | if (strcmp(accountname, ic->acc->user) != 0) { |
---|
| 1102 | log_message(LOGLVL_WARNING, |
---|
| 1103 | "otr: internal account name mismatch: '%s' vs '%s'", |
---|
| 1104 | accountname, ic->acc->user); |
---|
| 1105 | } |
---|
| 1106 | if (strcmp(protocol, ic->acc->prpl->name) != 0) { |
---|
| 1107 | log_message(LOGLVL_WARNING, |
---|
| 1108 | "otr: internal protocol name mismatch: '%s' vs '%s'", |
---|
| 1109 | protocol, ic->acc->prpl->name); |
---|
| 1110 | } |
---|
| 1111 | |
---|
| 1112 | return ic; |
---|
| 1113 | } |
---|
| 1114 | |
---|
[5a71d9c] | 1115 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol) |
---|
[764c7d1] | 1116 | { |
---|
| 1117 | user_t *u; |
---|
| 1118 | |
---|
[8521b02] | 1119 | log_message(LOGLVL_DEBUG, "peeruser '%s' '%s'", handle, protocol); |
---|
| 1120 | |
---|
[764c7d1] | 1121 | for(u=irc->users; u; u=u->next) { |
---|
| 1122 | struct prpl *prpl; |
---|
| 1123 | if(!u->ic || !u->handle) |
---|
[8521b02] | 1124 | continue; |
---|
[764c7d1] | 1125 | prpl = u->ic->acc->prpl; |
---|
| 1126 | if(strcmp(prpl->name, protocol) == 0 |
---|
| 1127 | && prpl->handle_cmp(u->handle, handle) == 0) { |
---|
[5a71d9c] | 1128 | return u; |
---|
[764c7d1] | 1129 | } |
---|
| 1130 | } |
---|
| 1131 | |
---|
[5a71d9c] | 1132 | return NULL; |
---|
| 1133 | } |
---|
| 1134 | |
---|
[8521b02] | 1135 | int hexval(char a) |
---|
| 1136 | { |
---|
| 1137 | int x=tolower(a); |
---|
| 1138 | |
---|
| 1139 | if(x>='a' && x<='f') |
---|
| 1140 | x = x - 'a' + 10; |
---|
| 1141 | else if(x>='0' && x<='9') |
---|
| 1142 | x = x - '0'; |
---|
| 1143 | else |
---|
| 1144 | return -1; |
---|
| 1145 | |
---|
| 1146 | return x; |
---|
| 1147 | } |
---|
| 1148 | |
---|
[5a71d9c] | 1149 | const char *peernick(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1150 | { |
---|
| 1151 | static char fallback[512]; |
---|
| 1152 | |
---|
| 1153 | user_t *u = peeruser(irc, handle, protocol); |
---|
| 1154 | if(u) { |
---|
| 1155 | return u->nick; |
---|
| 1156 | } else { |
---|
| 1157 | g_snprintf(fallback, 511, "%s/%s", handle, protocol); |
---|
| 1158 | return fallback; |
---|
| 1159 | } |
---|
| 1160 | } |
---|
| 1161 | |
---|
| 1162 | int otr_update_modeflags(irc_t *irc, user_t *u) |
---|
| 1163 | { |
---|
[52e6e17] | 1164 | char *vb = set_getstr(&irc->set, "voice_buddies"); |
---|
| 1165 | char *hb = set_getstr(&irc->set, "halfop_buddies"); |
---|
| 1166 | char *ob = set_getstr(&irc->set, "op_buddies"); |
---|
| 1167 | int encrypted = u->encrypted; |
---|
| 1168 | int trusted = u->encrypted > 1; |
---|
| 1169 | char flags[7]; |
---|
[c595308] | 1170 | int nflags=0; |
---|
[52e6e17] | 1171 | char *p = flags; |
---|
[8c2b1c3] | 1172 | char *from; |
---|
[52e6e17] | 1173 | int i; |
---|
[5a71d9c] | 1174 | |
---|
[52e6e17] | 1175 | if(!strcmp(vb, "encrypted")) { |
---|
| 1176 | *(p++) = encrypted ? '+' : '-'; |
---|
| 1177 | *(p++) = 'v'; |
---|
| 1178 | nflags++; |
---|
| 1179 | } else if(!strcmp(vb, "trusted")) { |
---|
| 1180 | *(p++) = trusted ? '+' : '-'; |
---|
| 1181 | *(p++) = 'v'; |
---|
| 1182 | nflags++; |
---|
| 1183 | } |
---|
| 1184 | if(!strcmp(hb, "encrypted")) { |
---|
| 1185 | *(p++) = encrypted ? '+' : '-'; |
---|
| 1186 | *(p++) = 'h'; |
---|
| 1187 | nflags++; |
---|
| 1188 | } else if(!strcmp(hb, "trusted")) { |
---|
| 1189 | *(p++) = trusted ? '+' : '-'; |
---|
| 1190 | *(p++) = 'h'; |
---|
| 1191 | nflags++; |
---|
| 1192 | } |
---|
| 1193 | if(!strcmp(ob, "encrypted")) { |
---|
| 1194 | *(p++) = encrypted ? '+' : '-'; |
---|
| 1195 | *(p++) = 'o'; |
---|
| 1196 | nflags++; |
---|
| 1197 | } else if(!strcmp(ob, "trusted")) { |
---|
| 1198 | *(p++) = trusted ? '+' : '-'; |
---|
| 1199 | *(p++) = 'o'; |
---|
| 1200 | nflags++; |
---|
| 1201 | } |
---|
| 1202 | *p = '\0'; |
---|
[5a71d9c] | 1203 | |
---|
[52e6e17] | 1204 | p = g_malloc(nflags * (strlen(u->nick)+1) + 1); |
---|
| 1205 | *p = '\0'; |
---|
| 1206 | if(!p) |
---|
[5a71d9c] | 1207 | return 0; |
---|
[52e6e17] | 1208 | for(i=0; i<nflags; i++) { |
---|
| 1209 | strcat(p, " "); |
---|
| 1210 | strcat(p, u->nick); |
---|
[5a71d9c] | 1211 | } |
---|
[8c2b1c3] | 1212 | if(set_getbool(&irc->set, "simulate_netsplit")) |
---|
| 1213 | from = g_strdup(irc->myhost); |
---|
| 1214 | else |
---|
| 1215 | from = g_strdup_printf("%s!%s@%s", irc->mynick, irc->mynick, irc->myhost); |
---|
| 1216 | irc_write(irc, ":%s MODE %s %s%s", from, irc->channel, flags, p); |
---|
| 1217 | g_free(from); |
---|
[52e6e17] | 1218 | g_free(p); |
---|
[5a71d9c] | 1219 | |
---|
| 1220 | return 1; |
---|
[764c7d1] | 1221 | } |
---|
| 1222 | |
---|
| 1223 | void show_fingerprints(irc_t *irc, ConnContext *ctx) |
---|
| 1224 | { |
---|
| 1225 | char human[45]; |
---|
| 1226 | Fingerprint *fp; |
---|
| 1227 | const char *trust; |
---|
| 1228 | int count=0; |
---|
| 1229 | |
---|
| 1230 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
---|
| 1231 | if(!fp->fingerprint) |
---|
| 1232 | continue; |
---|
| 1233 | count++; |
---|
| 1234 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 1235 | if(!fp->trust || fp->trust[0] == '\0') { |
---|
| 1236 | trust="untrusted"; |
---|
| 1237 | } else { |
---|
| 1238 | trust=fp->trust; |
---|
| 1239 | } |
---|
| 1240 | if(fp == ctx->active_fingerprint) { |
---|
[8521b02] | 1241 | irc_usermsg(irc, " \x02%s (%s)\x02", human, trust); |
---|
[764c7d1] | 1242 | } else { |
---|
[8521b02] | 1243 | irc_usermsg(irc, " %s (%s)", human, trust); |
---|
[764c7d1] | 1244 | } |
---|
| 1245 | } |
---|
| 1246 | if(count==0) |
---|
[8521b02] | 1247 | irc_usermsg(irc, " no fingerprints"); |
---|
| 1248 | } |
---|
| 1249 | |
---|
[c595308] | 1250 | Fingerprint *match_fingerprint(irc_t *irc, ConnContext *ctx, const char **args) |
---|
| 1251 | { |
---|
| 1252 | Fingerprint *fp, *fp2; |
---|
| 1253 | char human[45]; |
---|
| 1254 | char prefix[45], *p; |
---|
| 1255 | int n; |
---|
| 1256 | int i,j; |
---|
| 1257 | |
---|
| 1258 | /* assemble the args into a prefix in standard "human" form */ |
---|
| 1259 | n=0; |
---|
| 1260 | p=prefix; |
---|
| 1261 | for(i=0; args[i]; i++) { |
---|
| 1262 | for(j=0; args[i][j]; j++) { |
---|
| 1263 | char c = toupper(args[i][j]); |
---|
| 1264 | |
---|
| 1265 | if(n>=40) { |
---|
| 1266 | irc_usermsg(irc, "too many fingerprint digits given, expected at most 40"); |
---|
| 1267 | return NULL; |
---|
| 1268 | } |
---|
| 1269 | |
---|
| 1270 | if( (c>='A' && c<='F') || (c>='0' && c<='9') ) { |
---|
| 1271 | *(p++) = c; |
---|
| 1272 | } else { |
---|
| 1273 | irc_usermsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i+1); |
---|
| 1274 | return NULL; |
---|
| 1275 | } |
---|
| 1276 | |
---|
| 1277 | n++; |
---|
| 1278 | if(n%8 == 0) |
---|
| 1279 | *(p++) = ' '; |
---|
| 1280 | } |
---|
| 1281 | } |
---|
| 1282 | *p = '\0'; |
---|
| 1283 | log_message(LOGLVL_DEBUG, "match_fingerprint '%s'", prefix); |
---|
| 1284 | log_message(LOGLVL_DEBUG, "n=%d strlen(prefix)=%d", n, strlen(prefix)); |
---|
| 1285 | |
---|
| 1286 | /* find first fingerprint with the given prefix */ |
---|
| 1287 | n = strlen(prefix); |
---|
| 1288 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
---|
| 1289 | if(!fp->fingerprint) |
---|
| 1290 | continue; |
---|
| 1291 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 1292 | if(!strncmp(prefix, human, n)) |
---|
| 1293 | break; |
---|
| 1294 | } |
---|
| 1295 | if(!fp) { |
---|
| 1296 | irc_usermsg(irc, "%s: no match", prefix); |
---|
| 1297 | return NULL; |
---|
| 1298 | } |
---|
| 1299 | |
---|
| 1300 | /* make sure the match, if any, is unique */ |
---|
| 1301 | for(fp2=fp->next; fp2; fp2=fp2->next) { |
---|
| 1302 | if(!fp2->fingerprint) |
---|
| 1303 | continue; |
---|
| 1304 | otrl_privkey_hash_to_human(human, fp2->fingerprint); |
---|
| 1305 | if(!strncmp(prefix, human, n)) |
---|
| 1306 | break; |
---|
| 1307 | } |
---|
| 1308 | if(fp2) { |
---|
| 1309 | irc_usermsg(irc, "%s: multiple matches", prefix); |
---|
| 1310 | return NULL; |
---|
| 1311 | } |
---|
| 1312 | |
---|
| 1313 | return fp; |
---|
| 1314 | } |
---|
| 1315 | |
---|
[5f4eede] | 1316 | OtrlPrivKey *match_privkey(irc_t *irc, const char **args) |
---|
| 1317 | { |
---|
| 1318 | OtrlPrivKey *k, *k2; |
---|
| 1319 | char human[45]; |
---|
| 1320 | char prefix[45], *p; |
---|
| 1321 | int n; |
---|
| 1322 | int i,j; |
---|
| 1323 | |
---|
| 1324 | /* assemble the args into a prefix in standard "human" form */ |
---|
| 1325 | n=0; |
---|
| 1326 | p=prefix; |
---|
| 1327 | for(i=0; args[i]; i++) { |
---|
| 1328 | for(j=0; args[i][j]; j++) { |
---|
| 1329 | char c = toupper(args[i][j]); |
---|
| 1330 | |
---|
| 1331 | if(n>=40) { |
---|
| 1332 | irc_usermsg(irc, "too many fingerprint digits given, expected at most 40"); |
---|
| 1333 | return NULL; |
---|
| 1334 | } |
---|
| 1335 | |
---|
| 1336 | if( (c>='A' && c<='F') || (c>='0' && c<='9') ) { |
---|
| 1337 | *(p++) = c; |
---|
| 1338 | } else { |
---|
| 1339 | irc_usermsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i+1); |
---|
| 1340 | return NULL; |
---|
| 1341 | } |
---|
| 1342 | |
---|
| 1343 | n++; |
---|
| 1344 | if(n%8 == 0) |
---|
| 1345 | *(p++) = ' '; |
---|
| 1346 | } |
---|
| 1347 | } |
---|
| 1348 | *p = '\0'; |
---|
| 1349 | log_message(LOGLVL_DEBUG, "match_privkey '%s'", prefix); |
---|
| 1350 | log_message(LOGLVL_DEBUG, "n=%d strlen(prefix)=%d", n, strlen(prefix)); |
---|
| 1351 | |
---|
| 1352 | /* find first key which matches the given prefix */ |
---|
| 1353 | n = strlen(prefix); |
---|
[dc9797f] | 1354 | for(k=irc->otr->us->privkey_root; k; k=k->next) { |
---|
| 1355 | p = otrl_privkey_fingerprint(irc->otr->us, human, k->accountname, k->protocol); |
---|
[5f4eede] | 1356 | if(!p) /* gah! :-P */ |
---|
| 1357 | continue; |
---|
| 1358 | if(!strncmp(prefix, human, n)) |
---|
| 1359 | break; |
---|
| 1360 | } |
---|
| 1361 | if(!k) { |
---|
| 1362 | irc_usermsg(irc, "%s: no match", prefix); |
---|
| 1363 | return NULL; |
---|
| 1364 | } |
---|
| 1365 | |
---|
| 1366 | /* make sure the match, if any, is unique */ |
---|
| 1367 | for(k2=k->next; k2; k2=k2->next) { |
---|
[dc9797f] | 1368 | p = otrl_privkey_fingerprint(irc->otr->us, human, k2->accountname, k2->protocol); |
---|
[5f4eede] | 1369 | if(!p) /* gah! :-P */ |
---|
| 1370 | continue; |
---|
| 1371 | if(!strncmp(prefix, human, n)) |
---|
| 1372 | break; |
---|
| 1373 | } |
---|
| 1374 | if(k2) { |
---|
| 1375 | irc_usermsg(irc, "%s: multiple matches", prefix); |
---|
| 1376 | return NULL; |
---|
| 1377 | } |
---|
| 1378 | |
---|
| 1379 | return k; |
---|
| 1380 | } |
---|
| 1381 | |
---|
[8521b02] | 1382 | void show_general_otr_info(irc_t *irc) |
---|
| 1383 | { |
---|
| 1384 | ConnContext *ctx; |
---|
| 1385 | OtrlPrivKey *key; |
---|
| 1386 | char human[45]; |
---|
| 1387 | |
---|
| 1388 | /* list all privkeys */ |
---|
| 1389 | irc_usermsg(irc, "\x1fprivate keys:\x1f"); |
---|
[dc9797f] | 1390 | for(key=irc->otr->us->privkey_root; key; key=key->next) { |
---|
[8521b02] | 1391 | const char *hash; |
---|
| 1392 | |
---|
| 1393 | switch(key->pubkey_type) { |
---|
| 1394 | case OTRL_PUBKEY_TYPE_DSA: |
---|
| 1395 | irc_usermsg(irc, " %s/%s - DSA", key->accountname, key->protocol); |
---|
| 1396 | break; |
---|
| 1397 | default: |
---|
| 1398 | irc_usermsg(irc, " %s/%s - type %d", key->accountname, key->protocol, |
---|
| 1399 | key->pubkey_type); |
---|
| 1400 | } |
---|
| 1401 | |
---|
| 1402 | /* No, it doesn't make much sense to search for the privkey again by |
---|
| 1403 | account/protocol, but libotr currently doesn't provide a direct routine |
---|
| 1404 | for hashing a given 'OtrlPrivKey'... */ |
---|
[dc9797f] | 1405 | hash = otrl_privkey_fingerprint(irc->otr->us, human, key->accountname, key->protocol); |
---|
[8521b02] | 1406 | if(hash) /* should always succeed */ |
---|
| 1407 | irc_usermsg(irc, " %s", human); |
---|
| 1408 | } |
---|
| 1409 | |
---|
| 1410 | /* list all contexts */ |
---|
| 1411 | irc_usermsg(irc, "%s", ""); |
---|
| 1412 | irc_usermsg(irc, "\x1f" "connection contexts:\x1f (bold=currently encrypted)"); |
---|
[dc9797f] | 1413 | for(ctx=irc->otr->us->context_root; ctx; ctx=ctx->next) {\ |
---|
[8521b02] | 1414 | user_t *u; |
---|
| 1415 | char *userstring; |
---|
| 1416 | |
---|
| 1417 | u = peeruser(irc, ctx->username, ctx->protocol); |
---|
| 1418 | if(u) |
---|
| 1419 | userstring = g_strdup_printf("%s/%s/%s (%s)", |
---|
| 1420 | ctx->username, ctx->protocol, ctx->accountname, u->nick); |
---|
| 1421 | else |
---|
| 1422 | userstring = g_strdup_printf("%s/%s/%s", |
---|
| 1423 | ctx->username, ctx->protocol, ctx->accountname); |
---|
| 1424 | |
---|
| 1425 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 1426 | irc_usermsg(irc, " \x02%s\x02", userstring); |
---|
| 1427 | } else { |
---|
| 1428 | irc_usermsg(irc, " %s", userstring); |
---|
| 1429 | } |
---|
| 1430 | |
---|
| 1431 | g_free(userstring); |
---|
| 1432 | } |
---|
| 1433 | } |
---|
| 1434 | |
---|
| 1435 | void show_otr_context_info(irc_t *irc, ConnContext *ctx) |
---|
| 1436 | { |
---|
| 1437 | switch(ctx->otr_offer) { |
---|
| 1438 | case OFFER_NOT: |
---|
| 1439 | irc_usermsg(irc, " otr offer status: none sent"); |
---|
| 1440 | break; |
---|
| 1441 | case OFFER_SENT: |
---|
| 1442 | irc_usermsg(irc, " otr offer status: awaiting reply"); |
---|
| 1443 | break; |
---|
| 1444 | case OFFER_ACCEPTED: |
---|
| 1445 | irc_usermsg(irc, " otr offer status: accepted our offer"); |
---|
| 1446 | break; |
---|
| 1447 | case OFFER_REJECTED: |
---|
| 1448 | irc_usermsg(irc, " otr offer status: ignored our offer"); |
---|
| 1449 | break; |
---|
| 1450 | default: |
---|
| 1451 | irc_usermsg(irc, " otr offer status: %d", ctx->otr_offer); |
---|
| 1452 | } |
---|
| 1453 | |
---|
| 1454 | switch(ctx->msgstate) { |
---|
| 1455 | case OTRL_MSGSTATE_PLAINTEXT: |
---|
| 1456 | irc_usermsg(irc, " connection state: cleartext"); |
---|
| 1457 | break; |
---|
| 1458 | case OTRL_MSGSTATE_ENCRYPTED: |
---|
| 1459 | irc_usermsg(irc, " connection state: encrypted (v%d)", ctx->protocol_version); |
---|
| 1460 | break; |
---|
| 1461 | case OTRL_MSGSTATE_FINISHED: |
---|
| 1462 | irc_usermsg(irc, " connection state: shut down"); |
---|
| 1463 | break; |
---|
| 1464 | default: |
---|
| 1465 | irc_usermsg(irc, " connection state: %d", ctx->msgstate); |
---|
| 1466 | } |
---|
| 1467 | |
---|
[6c91e6e] | 1468 | irc_usermsg(irc, " fingerprints: (bold=active)"); |
---|
[8521b02] | 1469 | show_fingerprints(irc, ctx); |
---|
[764c7d1] | 1470 | } |
---|
| 1471 | |
---|
[dc9797f] | 1472 | int keygen_in_progress(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1473 | { |
---|
| 1474 | kg_t *kg; |
---|
| 1475 | |
---|
| 1476 | log_message(LOGLVL_DEBUG, "keygen_in_progress '%s' '%s'", handle, protocol); |
---|
| 1477 | |
---|
| 1478 | if(!irc->otr->sent_accountname || !irc->otr->sent_protocol) |
---|
| 1479 | return 0; |
---|
| 1480 | |
---|
| 1481 | /* are we currently working on this key? */ |
---|
| 1482 | if(!strcmp(handle, irc->otr->sent_accountname) && |
---|
| 1483 | !strcmp(protocol, irc->otr->sent_protocol)) |
---|
| 1484 | return 1; |
---|
| 1485 | |
---|
| 1486 | /* do we have it queued for later? */ |
---|
| 1487 | for(kg=irc->otr->todo; kg; kg=kg->next) { |
---|
| 1488 | if(!strcmp(handle, kg->accountname) && |
---|
| 1489 | !strcmp(protocol, kg->protocol)) |
---|
| 1490 | return 1; |
---|
| 1491 | } |
---|
| 1492 | |
---|
| 1493 | return 0; |
---|
| 1494 | } |
---|
| 1495 | |
---|
[764c7d1] | 1496 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1497 | { |
---|
[dc9797f] | 1498 | /* do nothing if a key for the requested account is already being generated */ |
---|
| 1499 | if(keygen_in_progress(irc, handle, protocol)) |
---|
| 1500 | return; |
---|
| 1501 | |
---|
[f3597a1] | 1502 | irc_usermsg(irc, "generating new private key for %s/%s...", handle, protocol); |
---|
[764c7d1] | 1503 | |
---|
[522a00f] | 1504 | /* see if we already have a keygen child running. if not, start one and put a |
---|
[27db433] | 1505 | handler on its output. */ |
---|
[dc9797f] | 1506 | if(!irc->otr->keygen || waitpid(irc->otr->keygen, NULL, WNOHANG)) { |
---|
[27db433] | 1507 | pid_t p; |
---|
| 1508 | int to[2], from[2]; |
---|
| 1509 | FILE *tof, *fromf; |
---|
| 1510 | |
---|
| 1511 | if(pipe(to) < 0 || pipe(from) < 0) { |
---|
| 1512 | irc_usermsg(irc, "otr keygen: couldn't create pipe: %s", strerror(errno)); |
---|
| 1513 | return; |
---|
| 1514 | } |
---|
| 1515 | |
---|
| 1516 | tof = fdopen(to[1], "w"); |
---|
| 1517 | fromf = fdopen(from[0], "r"); |
---|
| 1518 | if(!tof || !fromf) { |
---|
| 1519 | irc_usermsg(irc, "otr keygen: couldn't streamify pipe: %s", strerror(errno)); |
---|
| 1520 | return; |
---|
| 1521 | } |
---|
| 1522 | |
---|
| 1523 | p = fork(); |
---|
| 1524 | if(p<0) { |
---|
| 1525 | irc_usermsg(irc, "otr keygen: couldn't fork: %s", strerror(errno)); |
---|
| 1526 | return; |
---|
| 1527 | } |
---|
| 1528 | |
---|
| 1529 | if(!p) { |
---|
| 1530 | /* child process */ |
---|
| 1531 | signal(SIGTERM, exit); |
---|
[dc9797f] | 1532 | keygen_child_main(irc->otr->us, to[0], from[1]); |
---|
[27db433] | 1533 | exit(0); |
---|
| 1534 | } |
---|
| 1535 | |
---|
[dc9797f] | 1536 | irc->otr->keygen = p; |
---|
| 1537 | irc->otr->to = tof; |
---|
| 1538 | irc->otr->from = fromf; |
---|
| 1539 | irc->otr->sent_accountname = NULL; |
---|
| 1540 | irc->otr->sent_protocol = NULL; |
---|
| 1541 | irc->otr->todo = NULL; |
---|
[27db433] | 1542 | b_input_add(from[0], GAIM_INPUT_READ, keygen_finish_handler, irc); |
---|
| 1543 | } |
---|
[764c7d1] | 1544 | |
---|
[dc9797f] | 1545 | /* is the keygen slave currently working? */ |
---|
| 1546 | if(irc->otr->sent_accountname) { |
---|
| 1547 | /* enqueue our job for later transmission */ |
---|
| 1548 | log_message(LOGLVL_DEBUG, "enqueueing keygen for %s/%s", handle, protocol); |
---|
| 1549 | kg_t **kg = &irc->otr->todo; |
---|
| 1550 | while(*kg) |
---|
| 1551 | kg=&((*kg)->next); |
---|
| 1552 | *kg = g_new0(kg_t, 1); |
---|
| 1553 | (*kg)->accountname = handle; |
---|
| 1554 | (*kg)->protocol = protocol; |
---|
| 1555 | } else { |
---|
| 1556 | /* send our job over and remember it */ |
---|
| 1557 | log_message(LOGLVL_DEBUG, "slave: generate for %s/%s!", handle, protocol); |
---|
| 1558 | fprintf(irc->otr->to, "%s\n%s\n", handle, protocol); |
---|
| 1559 | fflush(irc->otr->to); |
---|
| 1560 | irc->otr->sent_accountname = handle; |
---|
| 1561 | irc->otr->sent_protocol = protocol; |
---|
| 1562 | } |
---|
[27db433] | 1563 | } |
---|
[522a00f] | 1564 | |
---|
[27db433] | 1565 | void keygen_child_main(OtrlUserState us, int infd, int outfd) |
---|
| 1566 | { |
---|
| 1567 | FILE *input, *output; |
---|
| 1568 | char filename[128], accountname[512], protocol[512]; |
---|
| 1569 | gcry_error_t e; |
---|
| 1570 | int tempfd; |
---|
| 1571 | |
---|
| 1572 | input = fdopen(infd, "r"); |
---|
| 1573 | output = fdopen(outfd, "w"); |
---|
| 1574 | |
---|
| 1575 | while(!feof(input) && !ferror(input) && !feof(output) && !ferror(output)) { |
---|
| 1576 | myfgets(accountname, 512, input); |
---|
| 1577 | myfgets(protocol, 512, input); |
---|
[522a00f] | 1578 | |
---|
[27db433] | 1579 | strncpy(filename, "/tmp/bitlbee-XXXXXX", 128); |
---|
| 1580 | tempfd = mkstemp(filename); |
---|
| 1581 | close(tempfd); |
---|
| 1582 | |
---|
| 1583 | e = otrl_privkey_generate(us, filename, accountname, protocol); |
---|
| 1584 | if(e) { |
---|
| 1585 | fprintf(output, "\n"); /* this means failure */ |
---|
| 1586 | fprintf(output, "otr keygen: %s\n", gcry_strerror(e)); |
---|
| 1587 | unlink(filename); |
---|
| 1588 | } else { |
---|
| 1589 | fprintf(output, "%s\n", filename); |
---|
| 1590 | fprintf(output, "otr keygen for %s/%s complete\n", accountname, protocol); |
---|
| 1591 | } |
---|
| 1592 | fflush(output); |
---|
| 1593 | } |
---|
[764c7d1] | 1594 | |
---|
[27db433] | 1595 | fclose(input); |
---|
| 1596 | fclose(output); |
---|
[764c7d1] | 1597 | } |
---|
| 1598 | |
---|
| 1599 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond) |
---|
| 1600 | { |
---|
[27db433] | 1601 | irc_t *irc = (irc_t *)data; |
---|
| 1602 | char filename[512], msg[512]; |
---|
| 1603 | |
---|
| 1604 | log_message(LOGLVL_DEBUG, "keygen_finish_handler cond=%d", cond); |
---|
| 1605 | |
---|
[dc9797f] | 1606 | myfgets(filename, 512, irc->otr->from); |
---|
| 1607 | myfgets(msg, 512, irc->otr->from); |
---|
[27db433] | 1608 | |
---|
| 1609 | log_message(LOGLVL_DEBUG, "filename='%s'", filename); |
---|
| 1610 | log_message(LOGLVL_DEBUG, "msg='%s'", msg); |
---|
| 1611 | |
---|
| 1612 | irc_usermsg(irc, "%s", msg); |
---|
| 1613 | if(filename[0]) { |
---|
| 1614 | char *kf = g_strdup_printf("%s%s.otr_keys", global.conf->configdir, irc->nick); |
---|
| 1615 | char *tmp = g_strdup_printf("%s.new", kf); |
---|
| 1616 | copyfile(filename, tmp); |
---|
| 1617 | unlink(filename); |
---|
| 1618 | rename(tmp,kf); |
---|
[dc9797f] | 1619 | otrl_privkey_read(irc->otr->us, kf); |
---|
[27db433] | 1620 | g_free(kf); |
---|
| 1621 | g_free(tmp); |
---|
| 1622 | } |
---|
[dc9797f] | 1623 | |
---|
| 1624 | /* forget this job */ |
---|
| 1625 | irc->otr->sent_accountname = NULL; |
---|
| 1626 | irc->otr->sent_protocol = NULL; |
---|
| 1627 | |
---|
| 1628 | /* see if there are any more in the queue */ |
---|
| 1629 | if(irc->otr->todo) { |
---|
| 1630 | kg_t *p = irc->otr->todo; |
---|
| 1631 | /* send the next one over */ |
---|
| 1632 | log_message(LOGLVL_DEBUG, "slave: keygen for %s/%s!", p->accountname, p->protocol); |
---|
| 1633 | fprintf(irc->otr->to, "%s\n%s\n", p->accountname, p->protocol); |
---|
| 1634 | fflush(irc->otr->to); |
---|
| 1635 | irc->otr->sent_accountname = p->accountname; |
---|
| 1636 | irc->otr->sent_protocol = p->protocol; |
---|
| 1637 | irc->otr->todo = p->next; |
---|
| 1638 | g_free(p); |
---|
| 1639 | return TRUE; /* keep watching */ |
---|
| 1640 | } else { |
---|
| 1641 | /* okay, the slave is idle now, so kill him */ |
---|
[27db433] | 1642 | log_message(LOGLVL_DEBUG, "all keys done. die, slave!"); |
---|
[dc9797f] | 1643 | fclose(irc->otr->from); |
---|
| 1644 | fclose(irc->otr->to); |
---|
| 1645 | kill(irc->otr->keygen, SIGTERM); |
---|
| 1646 | waitpid(irc->otr->keygen, NULL, 0); |
---|
| 1647 | irc->otr->keygen = 0; |
---|
[27db433] | 1648 | return FALSE; /* unregister ourselves */ |
---|
| 1649 | } |
---|
| 1650 | } |
---|
| 1651 | |
---|
| 1652 | void copyfile(const char *a, const char *b) |
---|
| 1653 | { |
---|
| 1654 | int fda, fdb; |
---|
| 1655 | int n; |
---|
| 1656 | char buf[1024]; |
---|
| 1657 | |
---|
| 1658 | log_message(LOGLVL_DEBUG, "copyfile '%s' '%s'", a, b); |
---|
| 1659 | |
---|
| 1660 | fda = open(a, O_RDONLY); |
---|
| 1661 | fdb = open(b, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
---|
| 1662 | |
---|
| 1663 | while((n=read(fda, buf, 1024)) > 0) |
---|
| 1664 | write(fdb, buf, n); |
---|
| 1665 | |
---|
| 1666 | close(fda); |
---|
| 1667 | close(fdb); |
---|
| 1668 | } |
---|
| 1669 | |
---|
| 1670 | void myfgets(char *s, int size, FILE *stream) |
---|
| 1671 | { |
---|
| 1672 | if(!fgets(s, size, stream)) { |
---|
| 1673 | s[0] = '\0'; |
---|
| 1674 | } else { |
---|
| 1675 | int n = strlen(s); |
---|
| 1676 | if(n>0 && s[n-1] == '\n') |
---|
| 1677 | s[n-1] = '\0'; |
---|
| 1678 | } |
---|
[764c7d1] | 1679 | } |
---|
| 1680 | |
---|
| 1681 | void yes_keygen(gpointer w, void *data) |
---|
| 1682 | { |
---|
| 1683 | account_t *acc = (account_t *)data; |
---|
| 1684 | |
---|
[dc9797f] | 1685 | if(keygen_in_progress(acc->irc, acc->user, acc->prpl->name)) { |
---|
| 1686 | irc_usermsg(acc->irc, "keygen for %s/%s already in progress", |
---|
| 1687 | acc->user, acc->prpl->name); |
---|
| 1688 | } else { |
---|
| 1689 | otr_keygen(acc->irc, acc->user, acc->prpl->name); |
---|
| 1690 | } |
---|
[764c7d1] | 1691 | } |
---|
| 1692 | |
---|
| 1693 | |
---|
| 1694 | #else /* WITH_OTR undefined */ |
---|
| 1695 | |
---|
| 1696 | void cmd_otr(irc_t *irc, char **args) |
---|
| 1697 | { |
---|
| 1698 | irc_usermsg(irc, "otr: n/a, compiled without OTR support"); |
---|
| 1699 | } |
---|
| 1700 | |
---|
| 1701 | #endif |
---|