[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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[6738a67] | 48 | #include <signal.h> |
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[764c7d1] | 49 | |
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| 50 | |
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| 51 | /** OTR interface routines for the OtrlMessageAppOps struct: **/ |
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| 52 | |
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| 53 | OtrlPolicy op_policy(void *opdata, ConnContext *context); |
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| 54 | |
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| 55 | void op_create_privkey(void *opdata, const char *accountname, const char *protocol); |
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| 56 | |
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| 57 | int op_is_logged_in(void *opdata, const char *accountname, const char *protocol, |
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| 58 | const char *recipient); |
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| 59 | |
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| 60 | void op_inject_message(void *opdata, const char *accountname, const char *protocol, |
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| 61 | const char *recipient, const char *message); |
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| 62 | |
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| 63 | int op_display_otr_message(void *opdata, const char *accountname, const char *protocol, |
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| 64 | const char *username, const char *msg); |
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| 65 | |
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| 66 | void op_new_fingerprint(void *opdata, OtrlUserState us, const char *accountname, |
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| 67 | const char *protocol, const char *username, unsigned char fingerprint[20]); |
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| 68 | |
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| 69 | void op_write_fingerprints(void *opdata); |
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| 70 | |
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| 71 | void op_gone_secure(void *opdata, ConnContext *context); |
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| 72 | |
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| 73 | void op_gone_insecure(void *opdata, ConnContext *context); |
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| 74 | |
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| 75 | void op_still_secure(void *opdata, ConnContext *context, int is_reply); |
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| 76 | |
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| 77 | void op_log_message(void *opdata, const char *message); |
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| 78 | |
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[a13855a] | 79 | int op_max_message_size(void *opdata, ConnContext *context); |
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[764c7d1] | 80 | |
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[a13855a] | 81 | const char *op_account_name(void *opdata, const char *account, const char *protocol); |
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[764c7d1] | 82 | |
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| 83 | |
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| 84 | /** otr sub-command handlers: **/ |
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| 85 | |
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[8521b02] | 86 | void cmd_otr_connect(irc_t *irc, char **args); |
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| 87 | void cmd_otr_disconnect(irc_t *irc, char **args); |
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[5a71d9c] | 88 | void cmd_otr_smp(irc_t *irc, char **args); |
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| 89 | void cmd_otr_trust(irc_t *irc, char **args); |
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[764c7d1] | 90 | void cmd_otr_info(irc_t *irc, char **args); |
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[94e7eb3] | 91 | void cmd_otr_keygen(irc_t *irc, char **args); |
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[c595308] | 92 | void cmd_otr_forget(irc_t *irc, char **args); |
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[764c7d1] | 93 | |
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| 94 | const command_t otr_commands[] = { |
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[8521b02] | 95 | { "connect", 1, &cmd_otr_connect, 0 }, |
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| 96 | { "disconnect", 1, &cmd_otr_disconnect, 0 }, |
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| 97 | { "smp", 2, &cmd_otr_smp, 0 }, |
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| 98 | { "trust", 6, &cmd_otr_trust, 0 }, |
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| 99 | { "info", 0, &cmd_otr_info, 0 }, |
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[94e7eb3] | 100 | { "keygen", 1, &cmd_otr_keygen, 0 }, |
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[c595308] | 101 | { "forget", 2, &cmd_otr_forget, 0 }, |
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[764c7d1] | 102 | { NULL } |
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| 103 | }; |
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| 104 | |
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[6738a67] | 105 | typedef struct { |
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| 106 | void *fst; |
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| 107 | void *snd; |
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| 108 | } pair_t; |
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| 109 | |
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[764c7d1] | 110 | |
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| 111 | /** misc. helpers/subroutines: **/ |
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| 112 | |
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[dc9797f] | 113 | /* check whether we are already generating a key for a given account */ |
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| 114 | int keygen_in_progress(irc_t *irc, const char *handle, const char *protocol); |
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| 115 | |
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[522a00f] | 116 | /* start background process to generate a (new) key for a given account */ |
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[764c7d1] | 117 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol); |
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[c595308] | 118 | |
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[27db433] | 119 | /* main function for the forked keygen slave */ |
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[12cc58b] | 120 | void keygen_child_main(OtrlUserState us, int infd, int outfd); |
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[27db433] | 121 | |
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[522a00f] | 122 | /* mainloop handler for when a keygen finishes */ |
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[764c7d1] | 123 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond); |
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[c595308] | 124 | |
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[27db433] | 125 | /* copy the contents of file a to file b, overwriting it if it exists */ |
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| 126 | void copyfile(const char *a, const char *b); |
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| 127 | |
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| 128 | /* read one line of input from a stream, excluding trailing newline */ |
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| 129 | void myfgets(char *s, int size, FILE *stream); |
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| 130 | |
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[c595308] | 131 | /* some yes/no handlers */ |
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[6738a67] | 132 | void yes_keygen(void *data); |
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| 133 | void yes_forget_fingerprint(void *data); |
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| 134 | void yes_forget_context(void *data); |
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| 135 | void yes_forget_key(void *data); |
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[764c7d1] | 136 | |
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| 137 | /* helper to make sure accountname and protocol match the incoming "opdata" */ |
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| 138 | struct im_connection *check_imc(void *opdata, const char *accountname, |
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| 139 | const char *protocol); |
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| 140 | |
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[5a71d9c] | 141 | /* determine the nick for a given handle/protocol pair |
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| 142 | returns "handle/protocol" if not found */ |
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[764c7d1] | 143 | const char *peernick(irc_t *irc, const char *handle, const char *protocol); |
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| 144 | |
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[8521b02] | 145 | /* turn a hexadecimal digit into its numerical value */ |
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| 146 | int hexval(char a); |
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| 147 | |
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[ad2d8bc] | 148 | /* determine the irc_user_t for a given handle/protocol pair |
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[5a71d9c] | 149 | returns NULL if not found */ |
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[ad2d8bc] | 150 | irc_user_t *peeruser(irc_t *irc, const char *handle, const char *protocol); |
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[5a71d9c] | 151 | |
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[764c7d1] | 152 | /* handle SMP TLVs from a received message */ |
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| 153 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs); |
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| 154 | |
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[5a71d9c] | 155 | /* update op/voice flag of given user according to encryption state and settings |
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| 156 | returns 0 if neither op_buddies nor voice_buddies is set to "encrypted", |
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| 157 | i.e. msgstate should be announced seperately */ |
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[ad2d8bc] | 158 | int otr_update_modeflags(irc_t *irc, irc_user_t *u); |
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[5a71d9c] | 159 | |
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[8521b02] | 160 | /* show general info about the OTR subsystem; called by 'otr info' */ |
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| 161 | void show_general_otr_info(irc_t *irc); |
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| 162 | |
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| 163 | /* show info about a given OTR context */ |
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| 164 | void show_otr_context_info(irc_t *irc, ConnContext *ctx); |
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| 165 | |
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[764c7d1] | 166 | /* show the list of fingerprints associated with a given context */ |
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| 167 | void show_fingerprints(irc_t *irc, ConnContext *ctx); |
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| 168 | |
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[c595308] | 169 | /* find a fingerprint by prefix (given as any number of hex strings) */ |
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| 170 | Fingerprint *match_fingerprint(irc_t *irc, ConnContext *ctx, const char **args); |
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| 171 | |
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[5f4eede] | 172 | /* find a private key by fingerprint prefix (given as any number of hex strings) */ |
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| 173 | OtrlPrivKey *match_privkey(irc_t *irc, const char **args); |
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| 174 | |
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[764c7d1] | 175 | |
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| 176 | /*** routines declared in otr.h: ***/ |
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| 177 | |
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| 178 | void otr_init(void) |
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| 179 | { |
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| 180 | OTRL_INIT; |
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| 181 | |
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| 182 | /* fill global OtrlMessageAppOps */ |
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| 183 | global.otr_ops.policy = &op_policy; |
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| 184 | global.otr_ops.create_privkey = &op_create_privkey; |
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| 185 | global.otr_ops.is_logged_in = &op_is_logged_in; |
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| 186 | global.otr_ops.inject_message = &op_inject_message; |
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| 187 | global.otr_ops.notify = NULL; |
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| 188 | global.otr_ops.display_otr_message = &op_display_otr_message; |
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| 189 | global.otr_ops.update_context_list = NULL; |
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| 190 | global.otr_ops.protocol_name = NULL; |
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| 191 | global.otr_ops.protocol_name_free = NULL; |
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| 192 | global.otr_ops.new_fingerprint = &op_new_fingerprint; |
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| 193 | global.otr_ops.write_fingerprints = &op_write_fingerprints; |
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| 194 | global.otr_ops.gone_secure = &op_gone_secure; |
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| 195 | global.otr_ops.gone_insecure = &op_gone_insecure; |
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| 196 | global.otr_ops.still_secure = &op_still_secure; |
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| 197 | global.otr_ops.log_message = &op_log_message; |
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[a13855a] | 198 | global.otr_ops.max_message_size = &op_max_message_size; |
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| 199 | global.otr_ops.account_name = &op_account_name; |
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[764c7d1] | 200 | global.otr_ops.account_name_free = NULL; |
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| 201 | } |
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| 202 | |
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[dc9797f] | 203 | otr_t *otr_new(void) |
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| 204 | { |
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| 205 | otr_t *otr = g_new0(otr_t, 1); |
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| 206 | |
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| 207 | otr->us = otrl_userstate_create(); |
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| 208 | |
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| 209 | return otr; |
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| 210 | } |
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| 211 | |
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| 212 | void otr_free(otr_t *otr) |
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| 213 | { |
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| 214 | otrl_userstate_free(otr->us); |
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| 215 | if(otr->keygen) { |
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| 216 | kill(otr->keygen, SIGTERM); |
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| 217 | waitpid(otr->keygen, NULL, 0); |
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| 218 | /* TODO: remove stale keygen tempfiles */ |
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| 219 | } |
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| 220 | if(otr->to) |
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| 221 | fclose(otr->to); |
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| 222 | if(otr->from) |
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| 223 | fclose(otr->from); |
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| 224 | while(otr->todo) { |
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| 225 | kg_t *p = otr->todo; |
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| 226 | otr->todo = p->next; |
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| 227 | g_free(p); |
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| 228 | } |
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| 229 | g_free(otr); |
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| 230 | } |
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| 231 | |
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[764c7d1] | 232 | void otr_load(irc_t *irc) |
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| 233 | { |
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| 234 | char s[512]; |
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| 235 | account_t *a; |
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| 236 | gcry_error_t e; |
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[522a00f] | 237 | gcry_error_t enoent = gcry_error_from_errno(ENOENT); |
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[3064ea4] | 238 | int kg=0; |
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[764c7d1] | 239 | |
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[ad2d8bc] | 240 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, irc->user->nick); |
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[dc9797f] | 241 | e = otrl_privkey_read(irc->otr->us, s); |
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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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[ad2d8bc] | 245 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->user->nick); |
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[dc9797f] | 246 | e = otrl_privkey_read_fingerprints(irc->otr->us, s, NULL, NULL); |
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[522a00f] | 247 | if(e && e!=enoent) { |
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| 248 | irc_usermsg(irc, "otr load: %s: %s", s, gcry_strerror(e)); |
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[764c7d1] | 249 | } |
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| 250 | |
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| 251 | /* check for otr keys on all accounts */ |
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[ad2d8bc] | 252 | for(a=irc->b->accounts; a; a=a->next) { |
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[3064ea4] | 253 | kg = otr_check_for_key(a) || kg; |
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| 254 | } |
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| 255 | if(kg) { |
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| 256 | irc_usermsg(irc, "Notice: " |
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| 257 | "The accounts above do not have OTR encryption keys associated with them, yet. " |
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[fcfd9c5] | 258 | "These keys are now being generated in the background. " |
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| 259 | "You will be notified as they are completed. " |
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| 260 | "It is not necessary to wait; " |
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| 261 | "BitlBee can be used normally during key generation. " |
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| 262 | "You may safely ignore this message if you don't know what OTR is. ;)"); |
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[764c7d1] | 263 | } |
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| 264 | } |
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| 265 | |
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| 266 | void otr_save(irc_t *irc) |
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| 267 | { |
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| 268 | char s[512]; |
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[3c80a9d] | 269 | gcry_error_t e; |
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[764c7d1] | 270 | |
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[ad2d8bc] | 271 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->user->nick); |
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[dc9797f] | 272 | e = otrl_privkey_write_fingerprints(irc->otr->us, s); |
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[3c80a9d] | 273 | if(e) { |
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[522a00f] | 274 | irc_usermsg(irc, "otr save: %s: %s", s, gcry_strerror(e)); |
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[3c80a9d] | 275 | } |
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[ef93a2f] | 276 | chmod(s, 0600); |
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[764c7d1] | 277 | } |
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| 278 | |
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| 279 | void otr_remove(const char *nick) |
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| 280 | { |
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| 281 | char s[512]; |
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| 282 | |
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| 283 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, nick); |
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| 284 | unlink(s); |
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| 285 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, nick); |
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| 286 | unlink(s); |
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| 287 | } |
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| 288 | |
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| 289 | void otr_rename(const char *onick, const char *nnick) |
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| 290 | { |
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| 291 | char s[512], t[512]; |
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| 292 | |
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| 293 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, onick); |
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| 294 | g_snprintf(t, 511, "%s%s.otr_keys", global.conf->configdir, nnick); |
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| 295 | rename(s,t); |
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| 296 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, onick); |
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| 297 | g_snprintf(t, 511, "%s%s.otr_fprints", global.conf->configdir, nnick); |
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| 298 | rename(s,t); |
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| 299 | } |
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| 300 | |
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[3064ea4] | 301 | int otr_check_for_key(account_t *a) |
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[764c7d1] | 302 | { |
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[ad2d8bc] | 303 | irc_t *irc = a->bee->ui_data; |
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[a13855a] | 304 | OtrlPrivKey *k; |
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[764c7d1] | 305 | |
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[1dd3470] | 306 | /* don't do OTR on certain (not classic IM) protocols, e.g. twitter */ |
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| 307 | if(a->prpl->options & OPT_NOOTR) { |
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| 308 | return 0; |
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| 309 | } |
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| 310 | |
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[dc9797f] | 311 | k = otrl_privkey_find(irc->otr->us, a->user, a->prpl->name); |
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[a13855a] | 312 | if(k) { |
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[dc9797f] | 313 | irc_usermsg(irc, "otr: %s/%s ready", a->user, a->prpl->name); |
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[3064ea4] | 314 | return 0; |
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[dc9797f] | 315 | } if(keygen_in_progress(irc, a->user, a->prpl->name)) { |
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[3064ea4] | 316 | irc_usermsg(irc, "otr: keygen for %s/%s already in progress", a->user, a->prpl->name); |
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| 317 | return 0; |
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[764c7d1] | 318 | } else { |
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[3064ea4] | 319 | irc_usermsg(irc, "otr: starting background keygen for %s/%s", a->user, a->prpl->name); |
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[764c7d1] | 320 | otr_keygen(irc, a->user, a->prpl->name); |
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[3064ea4] | 321 | return 1; |
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[764c7d1] | 322 | } |
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| 323 | } |
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| 324 | |
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| 325 | char *otr_handle_message(struct im_connection *ic, const char *handle, const char *msg) |
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| 326 | { |
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| 327 | int ignore_msg; |
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| 328 | char *newmsg = NULL; |
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| 329 | OtrlTLV *tlvs = NULL; |
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| 330 | char *colormsg; |
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[ad2d8bc] | 331 | irc_t *irc = ic->bee->ui_data; |
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[764c7d1] | 332 | |
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[1dd3470] | 333 | /* don't do OTR on certain (not classic IM) protocols, e.g. twitter */ |
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| 334 | if(ic->acc->prpl->options & OPT_NOOTR) { |
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| 335 | return (g_strdup(msg)); |
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| 336 | } |
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| 337 | |
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[ad2d8bc] | 338 | ignore_msg = otrl_message_receiving(irc->otr->us, &global.otr_ops, ic, |
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[764c7d1] | 339 | ic->acc->user, ic->acc->prpl->name, handle, msg, &newmsg, |
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| 340 | &tlvs, NULL, NULL); |
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| 341 | |
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| 342 | otr_handle_smp(ic, handle, tlvs); |
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| 343 | |
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| 344 | if(ignore_msg) { |
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| 345 | /* this was an internal OTR protocol message */ |
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| 346 | return NULL; |
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| 347 | } else if(!newmsg) { |
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| 348 | /* this was a non-OTR message */ |
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| 349 | return g_strdup(msg); |
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| 350 | } else { |
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| 351 | /* OTR has processed this message */ |
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[ad2d8bc] | 352 | ConnContext *context = otrl_context_find(irc->otr->us, handle, |
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[764c7d1] | 353 | ic->acc->user, ic->acc->prpl->name, 0, NULL, NULL, NULL); |
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[5f4eede] | 354 | if(context && context->msgstate == OTRL_MSGSTATE_ENCRYPTED && |
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[ad2d8bc] | 355 | set_getbool(&ic->bee->set, "color_encrypted")) { |
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[764c7d1] | 356 | /* color according to f'print trust */ |
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[5933da7] | 357 | int color; |
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[764c7d1] | 358 | const char *trust = context->active_fingerprint->trust; |
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| 359 | if(trust && trust[0] != '\0') |
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[5933da7] | 360 | color=3; /* green */ |
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[764c7d1] | 361 | else |
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[5933da7] | 362 | color=5; /* red */ |
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[fc34fb5] | 363 | |
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| 364 | if(newmsg[0] == ',') { |
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| 365 | /* could be a problem with the color code */ |
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| 366 | /* insert a space between color spec and message */ |
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| 367 | colormsg = g_strdup_printf("\x03%.2d %s\x0F", color, newmsg); |
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| 368 | } else { |
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| 369 | colormsg = g_strdup_printf("\x03%.2d%s\x0F", color, newmsg); |
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| 370 | } |
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[764c7d1] | 371 | } else { |
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| 372 | colormsg = g_strdup(newmsg); |
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| 373 | } |
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| 374 | otrl_message_free(newmsg); |
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| 375 | return colormsg; |
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| 376 | } |
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| 377 | } |
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| 378 | |
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| 379 | int otr_send_message(struct im_connection *ic, const char *handle, const char *msg, int flags) |
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| 380 | { |
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[5a71d9c] | 381 | int st; |
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| 382 | char *otrmsg = NULL; |
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| 383 | ConnContext *ctx = NULL; |
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[ad2d8bc] | 384 | irc_t *irc = ic->bee->ui_data; |
---|
[1dd3470] | 385 | |
---|
| 386 | /* don't do OTR on certain (not classic IM) protocols, e.g. twitter */ |
---|
| 387 | if(ic->acc->prpl->options & OPT_NOOTR) { |
---|
[ad2d8bc] | 388 | /* TODO(wilmer): const */ |
---|
| 389 | return (ic->acc->prpl->buddy_msg(ic, (char*) handle, (char*) msg, flags)); |
---|
[1dd3470] | 390 | } |
---|
[5a71d9c] | 391 | |
---|
[ad2d8bc] | 392 | st = otrl_message_sending(irc->otr->us, &global.otr_ops, ic, |
---|
[764c7d1] | 393 | ic->acc->user, ic->acc->prpl->name, handle, |
---|
| 394 | msg, NULL, &otrmsg, NULL, NULL); |
---|
| 395 | if(st) { |
---|
| 396 | return st; |
---|
| 397 | } |
---|
| 398 | |
---|
[ad2d8bc] | 399 | ctx = otrl_context_find(irc->otr->us, |
---|
[764c7d1] | 400 | handle, ic->acc->user, ic->acc->prpl->name, |
---|
| 401 | 1, NULL, NULL, NULL); |
---|
| 402 | |
---|
| 403 | if(otrmsg) { |
---|
| 404 | if(!ctx) { |
---|
| 405 | otrl_message_free(otrmsg); |
---|
| 406 | return 1; |
---|
| 407 | } |
---|
| 408 | st = otrl_message_fragment_and_send(&global.otr_ops, ic, ctx, |
---|
| 409 | otrmsg, OTRL_FRAGMENT_SEND_ALL, NULL); |
---|
| 410 | otrl_message_free(otrmsg); |
---|
| 411 | } else { |
---|
[e2b15bb] | 412 | /* note: otrl_message_sending handles policy, so that if REQUIRE_ENCRYPTION is set, |
---|
| 413 | this case does not occur */ |
---|
[764c7d1] | 414 | st = ic->acc->prpl->buddy_msg( ic, (char *)handle, (char *)msg, flags ); |
---|
| 415 | } |
---|
| 416 | |
---|
| 417 | return st; |
---|
| 418 | } |
---|
| 419 | |
---|
| 420 | void cmd_otr(irc_t *irc, char **args) |
---|
| 421 | { |
---|
| 422 | const command_t *cmd; |
---|
| 423 | |
---|
| 424 | if(!args[0]) |
---|
| 425 | return; |
---|
| 426 | |
---|
| 427 | if(!args[1]) |
---|
| 428 | return; |
---|
| 429 | |
---|
| 430 | for(cmd=otr_commands; cmd->command; cmd++) { |
---|
| 431 | if(strcmp(cmd->command, args[1]) == 0) |
---|
| 432 | break; |
---|
| 433 | } |
---|
| 434 | |
---|
| 435 | if(!cmd->command) { |
---|
[c595308] | 436 | irc_usermsg(irc, "%s: unknown subcommand \"%s\", see \x02help otr\x02", |
---|
[764c7d1] | 437 | args[0], args[1]); |
---|
| 438 | return; |
---|
| 439 | } |
---|
| 440 | |
---|
| 441 | if(!args[cmd->required_parameters+1]) { |
---|
| 442 | irc_usermsg(irc, "%s %s: not enough arguments (%d req.)", |
---|
| 443 | args[0], args[1], cmd->required_parameters); |
---|
| 444 | return; |
---|
| 445 | } |
---|
| 446 | |
---|
| 447 | cmd->execute(irc, args+1); |
---|
| 448 | } |
---|
| 449 | |
---|
| 450 | |
---|
| 451 | /*** OTR "MessageAppOps" callbacks for global.otr_ui: ***/ |
---|
| 452 | |
---|
| 453 | OtrlPolicy op_policy(void *opdata, ConnContext *context) |
---|
| 454 | { |
---|
[e2b15bb] | 455 | struct im_connection *ic = check_imc(opdata, context->accountname, context->protocol); |
---|
[ad2d8bc] | 456 | irc_t *irc = ic->bee->ui_data; |
---|
[e2b15bb] | 457 | const char *p; |
---|
[dc9797f] | 458 | |
---|
| 459 | /* policy override during keygen: if we're missing the key for context but are currently |
---|
| 460 | generating it, then that's as much as we can do. => temporarily return NEVER. */ |
---|
[ad2d8bc] | 461 | if(keygen_in_progress(irc, context->accountname, context->protocol) && |
---|
| 462 | !otrl_privkey_find(irc->otr->us, context->accountname, context->protocol)) |
---|
[dc9797f] | 463 | return OTRL_POLICY_NEVER; |
---|
[e2b15bb] | 464 | |
---|
[ad2d8bc] | 465 | p = set_getstr(&ic->bee->set, "otr_policy"); |
---|
[e2b15bb] | 466 | if(!strcmp(p, "never")) |
---|
| 467 | return OTRL_POLICY_NEVER; |
---|
| 468 | if(!strcmp(p, "opportunistic")) |
---|
| 469 | return OTRL_POLICY_OPPORTUNISTIC; |
---|
| 470 | if(!strcmp(p, "manual")) |
---|
| 471 | return OTRL_POLICY_MANUAL; |
---|
| 472 | if(!strcmp(p, "always")) |
---|
| 473 | return OTRL_POLICY_ALWAYS; |
---|
| 474 | |
---|
[764c7d1] | 475 | return OTRL_POLICY_OPPORTUNISTIC; |
---|
| 476 | } |
---|
| 477 | |
---|
| 478 | void op_create_privkey(void *opdata, const char *accountname, |
---|
| 479 | const char *protocol) |
---|
| 480 | { |
---|
| 481 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[ad2d8bc] | 482 | irc_t *irc = ic->bee->ui_data; |
---|
[764c7d1] | 483 | |
---|
[dc9797f] | 484 | /* will fail silently if keygen already in progress */ |
---|
[ad2d8bc] | 485 | otr_keygen(irc, accountname, protocol); |
---|
[764c7d1] | 486 | } |
---|
| 487 | |
---|
| 488 | int op_is_logged_in(void *opdata, const char *accountname, |
---|
| 489 | const char *protocol, const char *recipient) |
---|
| 490 | { |
---|
| 491 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[ad2d8bc] | 492 | bee_user_t *bu; |
---|
[764c7d1] | 493 | |
---|
[ad2d8bc] | 494 | /* lookup the irc_user_t for the given recipient */ |
---|
| 495 | bu = bee_user_by_handle(ic->bee, ic, recipient); |
---|
| 496 | if(bu) { |
---|
| 497 | if(bu->flags & BEE_USER_ONLINE) |
---|
[764c7d1] | 498 | return 1; |
---|
| 499 | else |
---|
| 500 | return 0; |
---|
| 501 | } else { |
---|
| 502 | return -1; |
---|
| 503 | } |
---|
| 504 | } |
---|
| 505 | |
---|
| 506 | void op_inject_message(void *opdata, const char *accountname, |
---|
| 507 | const char *protocol, const char *recipient, const char *message) |
---|
| 508 | { |
---|
| 509 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[ad2d8bc] | 510 | irc_t *irc = ic->bee->ui_data; |
---|
[764c7d1] | 511 | |
---|
| 512 | if (strcmp(accountname, recipient) == 0) { |
---|
| 513 | /* huh? injecting messages to myself? */ |
---|
[ad2d8bc] | 514 | irc_usermsg(irc, "note to self: %s", message); |
---|
[764c7d1] | 515 | } else { |
---|
| 516 | /* need to drop some consts here :-( */ |
---|
| 517 | /* TODO: get flags into op_inject_message?! */ |
---|
| 518 | ic->acc->prpl->buddy_msg(ic, (char *)recipient, (char *)message, 0); |
---|
| 519 | /* ignoring return value :-/ */ |
---|
| 520 | } |
---|
| 521 | } |
---|
| 522 | |
---|
| 523 | int op_display_otr_message(void *opdata, const char *accountname, |
---|
[5a71d9c] | 524 | const char *protocol, const char *username, const char *message) |
---|
[764c7d1] | 525 | { |
---|
| 526 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[5a71d9c] | 527 | char *msg = g_strdup(message); |
---|
[ad2d8bc] | 528 | irc_t *irc = ic->bee->ui_data; |
---|
[764c7d1] | 529 | |
---|
[5a71d9c] | 530 | strip_html(msg); |
---|
[ad2d8bc] | 531 | irc_usermsg(irc, "otr: %s", msg); |
---|
[764c7d1] | 532 | |
---|
[5a71d9c] | 533 | g_free(msg); |
---|
[764c7d1] | 534 | return 0; |
---|
| 535 | } |
---|
| 536 | |
---|
| 537 | void op_new_fingerprint(void *opdata, OtrlUserState us, |
---|
| 538 | const char *accountname, const char *protocol, |
---|
| 539 | const char *username, unsigned char fingerprint[20]) |
---|
| 540 | { |
---|
| 541 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[ad2d8bc] | 542 | irc_t *irc = ic->bee->ui_data; |
---|
[764c7d1] | 543 | char hunam[45]; /* anybody looking? ;-) */ |
---|
| 544 | |
---|
| 545 | otrl_privkey_hash_to_human(hunam, fingerprint); |
---|
[ad2d8bc] | 546 | irc_usermsg(irc, "new fingerprint for %s: %s", |
---|
| 547 | peernick(irc, username, protocol), hunam); |
---|
[764c7d1] | 548 | } |
---|
| 549 | |
---|
| 550 | void op_write_fingerprints(void *opdata) |
---|
| 551 | { |
---|
| 552 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
[ad2d8bc] | 553 | irc_t *irc = ic->bee->ui_data; |
---|
[764c7d1] | 554 | |
---|
[ad2d8bc] | 555 | otr_save(irc); |
---|
[764c7d1] | 556 | } |
---|
| 557 | |
---|
| 558 | void op_gone_secure(void *opdata, ConnContext *context) |
---|
| 559 | { |
---|
| 560 | struct im_connection *ic = |
---|
| 561 | check_imc(opdata, context->accountname, context->protocol); |
---|
[ad2d8bc] | 562 | irc_user_t *u; |
---|
| 563 | irc_t *irc = ic->bee->ui_data; |
---|
[c595308] | 564 | const char *trust; |
---|
[764c7d1] | 565 | |
---|
[ad2d8bc] | 566 | u = peeruser(irc, context->username, context->protocol); |
---|
[5a71d9c] | 567 | if(!u) { |
---|
| 568 | log_message(LOGLVL_ERROR, |
---|
[ad2d8bc] | 569 | "BUG: otr.c: op_gone_secure: irc_user_t for %s/%s/%s not found!", |
---|
[8521b02] | 570 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 571 | return; |
---|
| 572 | } |
---|
[c595308] | 573 | |
---|
| 574 | trust = context->active_fingerprint->trust; |
---|
| 575 | if(trust && trust[0]) |
---|
[ad2d8bc] | 576 | u->flags |= IRC_USER_OTR_ENCRYPTED | IRC_USER_OTR_TRUSTED; |
---|
[5a71d9c] | 577 | else |
---|
[ad2d8bc] | 578 | u->flags = ( u->flags & ~IRC_USER_OTR_TRUSTED ) | IRC_USER_OTR_ENCRYPTED; |
---|
| 579 | if(!otr_update_modeflags(irc, u)) |
---|
| 580 | irc_usermsg(irc, "conversation with %s is now off the record", u->nick); |
---|
[764c7d1] | 581 | } |
---|
| 582 | |
---|
| 583 | void op_gone_insecure(void *opdata, ConnContext *context) |
---|
| 584 | { |
---|
| 585 | struct im_connection *ic = |
---|
| 586 | check_imc(opdata, context->accountname, context->protocol); |
---|
[ad2d8bc] | 587 | irc_t *irc = ic->bee->ui_data; |
---|
| 588 | irc_user_t *u; |
---|
[764c7d1] | 589 | |
---|
[ad2d8bc] | 590 | u = peeruser(irc, context->username, context->protocol); |
---|
[5a71d9c] | 591 | if(!u) { |
---|
| 592 | log_message(LOGLVL_ERROR, |
---|
[ad2d8bc] | 593 | "BUG: otr.c: op_gone_insecure: irc_user_t for %s/%s/%s not found!", |
---|
[8521b02] | 594 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 595 | return; |
---|
| 596 | } |
---|
[ad2d8bc] | 597 | u->flags &= ~( IRC_USER_OTR_ENCRYPTED | IRC_USER_OTR_TRUSTED ); |
---|
| 598 | if(!otr_update_modeflags(irc, u)) |
---|
| 599 | irc_usermsg(irc, "conversation with %s is now in the clear", u->nick); |
---|
[764c7d1] | 600 | } |
---|
| 601 | |
---|
| 602 | void op_still_secure(void *opdata, ConnContext *context, int is_reply) |
---|
| 603 | { |
---|
| 604 | struct im_connection *ic = |
---|
| 605 | check_imc(opdata, context->accountname, context->protocol); |
---|
[ad2d8bc] | 606 | irc_t *irc = ic->bee->ui_data; |
---|
| 607 | irc_user_t *u; |
---|
[764c7d1] | 608 | |
---|
[ad2d8bc] | 609 | u = peeruser(irc, context->username, context->protocol); |
---|
[5a71d9c] | 610 | if(!u) { |
---|
| 611 | log_message(LOGLVL_ERROR, |
---|
[ad2d8bc] | 612 | "BUG: otr.c: op_still_secure: irc_user_t for %s/%s/%s not found!", |
---|
[8521b02] | 613 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 614 | return; |
---|
| 615 | } |
---|
| 616 | if(context->active_fingerprint->trust[0]) |
---|
[ad2d8bc] | 617 | u->flags |= IRC_USER_OTR_ENCRYPTED | IRC_USER_OTR_TRUSTED; |
---|
[5a71d9c] | 618 | else |
---|
[ad2d8bc] | 619 | u->flags = ( u->flags & ~IRC_USER_OTR_TRUSTED ) | IRC_USER_OTR_ENCRYPTED; |
---|
| 620 | if(!otr_update_modeflags(irc, u)) |
---|
| 621 | irc_usermsg(irc, "otr connection with %s has been refreshed", u->nick); |
---|
[764c7d1] | 622 | } |
---|
| 623 | |
---|
| 624 | void op_log_message(void *opdata, const char *message) |
---|
| 625 | { |
---|
[5a71d9c] | 626 | char *msg = g_strdup(message); |
---|
| 627 | |
---|
| 628 | strip_html(msg); |
---|
| 629 | log_message(LOGLVL_INFO, "otr: %s", msg); |
---|
| 630 | g_free(msg); |
---|
[764c7d1] | 631 | } |
---|
| 632 | |
---|
[a13855a] | 633 | int op_max_message_size(void *opdata, ConnContext *context) |
---|
| 634 | { |
---|
[5a71d9c] | 635 | struct im_connection *ic = |
---|
| 636 | check_imc(opdata, context->accountname, context->protocol); |
---|
| 637 | |
---|
| 638 | return ic->acc->prpl->mms; |
---|
[a13855a] | 639 | } |
---|
| 640 | |
---|
| 641 | const char *op_account_name(void *opdata, const char *account, const char *protocol) |
---|
| 642 | { |
---|
| 643 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
[ad2d8bc] | 644 | irc_t *irc = ic->bee->ui_data; |
---|
[a13855a] | 645 | |
---|
[ad2d8bc] | 646 | return peernick(irc, account, protocol); |
---|
[a13855a] | 647 | } |
---|
| 648 | |
---|
[764c7d1] | 649 | |
---|
| 650 | /*** OTR sub-command handlers ***/ |
---|
| 651 | |
---|
[8521b02] | 652 | void cmd_otr_disconnect(irc_t *irc, char **args) |
---|
[764c7d1] | 653 | { |
---|
[ad2d8bc] | 654 | irc_user_t *u; |
---|
[764c7d1] | 655 | |
---|
[ad2d8bc] | 656 | u = irc_user_by_name(irc, args[1]); |
---|
| 657 | if(!u || !u->bu || !u->bu->ic) { |
---|
[764c7d1] | 658 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 659 | return; |
---|
| 660 | } |
---|
| 661 | |
---|
[dc9797f] | 662 | otrl_message_disconnect(irc->otr->us, &global.otr_ops, |
---|
[ad2d8bc] | 663 | u->bu->ic, u->bu->ic->acc->user, u->bu->ic->acc->prpl->name, u->bu->handle); |
---|
[c595308] | 664 | |
---|
| 665 | /* for some reason, libotr (3.1.0) doesn't do this itself: */ |
---|
[ad2d8bc] | 666 | if(u->flags & IRC_USER_OTR_ENCRYPTED) { |
---|
[c595308] | 667 | ConnContext *ctx; |
---|
[ad2d8bc] | 668 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user, |
---|
| 669 | u->bu->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
[c595308] | 670 | if(ctx) |
---|
[ad2d8bc] | 671 | op_gone_insecure(u->bu->ic, ctx); |
---|
[c595308] | 672 | else /* huh? */ |
---|
[ad2d8bc] | 673 | u->flags &= ( IRC_USER_OTR_ENCRYPTED | IRC_USER_OTR_TRUSTED ); |
---|
[c595308] | 674 | } |
---|
[764c7d1] | 675 | } |
---|
| 676 | |
---|
[8521b02] | 677 | void cmd_otr_connect(irc_t *irc, char **args) |
---|
[764c7d1] | 678 | { |
---|
[ad2d8bc] | 679 | irc_user_t *u; |
---|
[764c7d1] | 680 | |
---|
[ad2d8bc] | 681 | u = irc_user_by_name(irc, args[1]); |
---|
| 682 | if(!u || !u->bu || !u->bu->ic) { |
---|
[764c7d1] | 683 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 684 | return; |
---|
| 685 | } |
---|
[ad2d8bc] | 686 | if(!(u->bu->flags & BEE_USER_ONLINE)) { |
---|
[764c7d1] | 687 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 688 | return; |
---|
| 689 | } |
---|
| 690 | |
---|
[ad2d8bc] | 691 | /* TODO(wilmer): imc_buddy_msg(u->bu->ic, u->bu->handle, "?OTR?", 0); */ |
---|
[764c7d1] | 692 | } |
---|
| 693 | |
---|
[5a71d9c] | 694 | void cmd_otr_smp(irc_t *irc, char **args) |
---|
[764c7d1] | 695 | { |
---|
[ad2d8bc] | 696 | irc_user_t *u; |
---|
[764c7d1] | 697 | ConnContext *ctx; |
---|
| 698 | |
---|
[ad2d8bc] | 699 | u = irc_user_by_name(irc, args[1]); |
---|
| 700 | if(!u || !u->bu || !u->bu->ic) { |
---|
[764c7d1] | 701 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 702 | return; |
---|
| 703 | } |
---|
[ad2d8bc] | 704 | if(!(u->bu->flags & BEE_USER_ONLINE)) { |
---|
[764c7d1] | 705 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 706 | return; |
---|
| 707 | } |
---|
| 708 | |
---|
[ad2d8bc] | 709 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, |
---|
| 710 | u->bu->ic->acc->user, u->bu->ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
[764c7d1] | 711 | if(!ctx) { |
---|
[3c80a9d] | 712 | /* huh? out of memory or what? */ |
---|
[764c7d1] | 713 | return; |
---|
| 714 | } |
---|
| 715 | |
---|
| 716 | if(ctx->smstate->nextExpected != OTRL_SMP_EXPECT1) { |
---|
| 717 | log_message(LOGLVL_INFO, |
---|
| 718 | "SMP already in phase %d, sending abort before reinitiating", |
---|
| 719 | ctx->smstate->nextExpected+1); |
---|
[ad2d8bc] | 720 | otrl_message_abort_smp(irc->otr->us, &global.otr_ops, u->bu->ic, ctx); |
---|
[764c7d1] | 721 | otrl_sm_state_free(ctx->smstate); |
---|
| 722 | } |
---|
| 723 | |
---|
| 724 | /* warning: the following assumes that smstates are cleared whenever an SMP |
---|
| 725 | is completed or aborted! */ |
---|
| 726 | if(ctx->smstate->secret == NULL) { |
---|
| 727 | irc_usermsg(irc, "smp: initiating with %s...", u->nick); |
---|
[dc9797f] | 728 | otrl_message_initiate_smp(irc->otr->us, &global.otr_ops, |
---|
[ad2d8bc] | 729 | u->bu->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
[764c7d1] | 730 | /* smp is now in EXPECT2 */ |
---|
| 731 | } else { |
---|
| 732 | /* if we're still in EXPECT1 but smstate is initialized, we must have |
---|
| 733 | received the SMP1, so let's issue a response */ |
---|
| 734 | irc_usermsg(irc, "smp: responding to %s...", u->nick); |
---|
[dc9797f] | 735 | otrl_message_respond_smp(irc->otr->us, &global.otr_ops, |
---|
[ad2d8bc] | 736 | u->bu->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
[764c7d1] | 737 | /* smp is now in EXPECT3 */ |
---|
| 738 | } |
---|
| 739 | } |
---|
| 740 | |
---|
[5a71d9c] | 741 | void cmd_otr_trust(irc_t *irc, char **args) |
---|
| 742 | { |
---|
[ad2d8bc] | 743 | irc_user_t *u; |
---|
[5a71d9c] | 744 | ConnContext *ctx; |
---|
| 745 | unsigned char raw[20]; |
---|
| 746 | Fingerprint *fp; |
---|
| 747 | int i,j; |
---|
| 748 | |
---|
[ad2d8bc] | 749 | u = irc_user_by_name(irc, args[1]); |
---|
| 750 | if(!u || !u->bu || !u->bu->ic) { |
---|
[5a71d9c] | 751 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 752 | return; |
---|
| 753 | } |
---|
| 754 | |
---|
[ad2d8bc] | 755 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, |
---|
| 756 | u->bu->ic->acc->user, u->bu->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
[5a71d9c] | 757 | if(!ctx) { |
---|
| 758 | irc_usermsg(irc, "%s: no otr context with user", args[1]); |
---|
| 759 | return; |
---|
| 760 | } |
---|
| 761 | |
---|
| 762 | /* convert given fingerprint to raw representation */ |
---|
| 763 | for(i=0; i<5; i++) { |
---|
| 764 | for(j=0; j<4; j++) { |
---|
| 765 | char *p = args[2+i]+(2*j); |
---|
| 766 | char *q = p+1; |
---|
| 767 | int x, y; |
---|
| 768 | |
---|
| 769 | if(!*p || !*q) { |
---|
| 770 | irc_usermsg(irc, "failed: truncated fingerprint block %d", i+1); |
---|
| 771 | return; |
---|
| 772 | } |
---|
| 773 | |
---|
| 774 | x = hexval(*p); |
---|
| 775 | y = hexval(*q); |
---|
| 776 | if(x<0) { |
---|
| 777 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+1, i+1); |
---|
| 778 | return; |
---|
| 779 | } |
---|
| 780 | if(y<0) { |
---|
| 781 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+2, i+1); |
---|
| 782 | return; |
---|
| 783 | } |
---|
| 784 | |
---|
| 785 | raw[i*4+j] = x*16 + y; |
---|
| 786 | } |
---|
| 787 | } |
---|
| 788 | fp = otrl_context_find_fingerprint(ctx, raw, 0, NULL); |
---|
| 789 | if(!fp) { |
---|
| 790 | irc_usermsg(irc, "failed: no such fingerprint for %s", args[1]); |
---|
| 791 | } else { |
---|
| 792 | char *trust = args[7] ? args[7] : "affirmed"; |
---|
| 793 | otrl_context_set_trust(fp, trust); |
---|
| 794 | irc_usermsg(irc, "fingerprint match, trust set to \"%s\"", trust); |
---|
[ad2d8bc] | 795 | if(u->flags & IRC_USER_OTR_ENCRYPTED) |
---|
| 796 | u->flags |= IRC_USER_OTR_TRUSTED; |
---|
[5a71d9c] | 797 | otr_update_modeflags(irc, u); |
---|
| 798 | } |
---|
| 799 | } |
---|
| 800 | |
---|
[8521b02] | 801 | void cmd_otr_info(irc_t *irc, char **args) |
---|
[764c7d1] | 802 | { |
---|
[8521b02] | 803 | if(!args[1]) { |
---|
| 804 | show_general_otr_info(irc); |
---|
[764c7d1] | 805 | } else { |
---|
[8521b02] | 806 | char *arg = g_strdup(args[1]); |
---|
[9730d72] | 807 | char *myhandle, *handle=NULL, *protocol; |
---|
[764c7d1] | 808 | ConnContext *ctx; |
---|
[8521b02] | 809 | |
---|
| 810 | /* interpret arg as 'user/protocol/account' if possible */ |
---|
| 811 | protocol = strchr(arg, '/'); |
---|
[9e64011] | 812 | myhandle = NULL; |
---|
[8521b02] | 813 | if(protocol) { |
---|
| 814 | *(protocol++) = '\0'; |
---|
| 815 | myhandle = strchr(protocol, '/'); |
---|
[764c7d1] | 816 | } |
---|
[8521b02] | 817 | if(protocol && myhandle) { |
---|
| 818 | *(myhandle++) = '\0'; |
---|
| 819 | handle = arg; |
---|
[dc9797f] | 820 | ctx = otrl_context_find(irc->otr->us, handle, myhandle, protocol, 0, NULL, NULL, NULL); |
---|
[8521b02] | 821 | if(!ctx) { |
---|
[c595308] | 822 | irc_usermsg(irc, "no such context"); |
---|
[8521b02] | 823 | g_free(arg); |
---|
| 824 | return; |
---|
| 825 | } |
---|
[764c7d1] | 826 | } else { |
---|
[ad2d8bc] | 827 | irc_user_t *u = irc_user_by_name(irc, args[1]); |
---|
| 828 | if(!u || !u->bu || !u->bu->ic) { |
---|
[8521b02] | 829 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 830 | g_free(arg); |
---|
| 831 | return; |
---|
[5a71d9c] | 832 | } |
---|
[ad2d8bc] | 833 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user, |
---|
| 834 | u->bu->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
[8521b02] | 835 | if(!ctx) { |
---|
| 836 | irc_usermsg(irc, "no otr context with %s", args[1]); |
---|
| 837 | g_free(arg); |
---|
| 838 | return; |
---|
| 839 | } |
---|
| 840 | } |
---|
| 841 | |
---|
| 842 | /* show how we resolved the (nick) argument, if we did */ |
---|
| 843 | if(handle!=arg) { |
---|
| 844 | irc_usermsg(irc, "%s is %s/%s; we are %s/%s to them", args[1], |
---|
| 845 | ctx->username, ctx->protocol, ctx->accountname, ctx->protocol); |
---|
[764c7d1] | 846 | } |
---|
[8521b02] | 847 | show_otr_context_info(irc, ctx); |
---|
| 848 | g_free(arg); |
---|
[764c7d1] | 849 | } |
---|
| 850 | } |
---|
| 851 | |
---|
[94e7eb3] | 852 | void cmd_otr_keygen(irc_t *irc, char **args) |
---|
| 853 | { |
---|
| 854 | int i, n; |
---|
| 855 | account_t *a; |
---|
| 856 | |
---|
| 857 | n = atoi(args[1]); |
---|
| 858 | if(n<0 || (!n && strcmp(args[1], "0"))) { |
---|
| 859 | irc_usermsg(irc, "%s: invalid account number", args[1]); |
---|
| 860 | return; |
---|
| 861 | } |
---|
| 862 | |
---|
[ad2d8bc] | 863 | a = irc->b->accounts; |
---|
[94e7eb3] | 864 | for(i=0; i<n && a; i++, a=a->next); |
---|
| 865 | if(!a) { |
---|
| 866 | irc_usermsg(irc, "%s: no such account", args[1]); |
---|
| 867 | return; |
---|
| 868 | } |
---|
| 869 | |
---|
[dc9797f] | 870 | if(keygen_in_progress(irc, a->user, a->prpl->name)) { |
---|
| 871 | irc_usermsg(irc, "keygen for account %d already in progress", n); |
---|
| 872 | return; |
---|
| 873 | } |
---|
| 874 | |
---|
| 875 | if(otrl_privkey_find(irc->otr->us, a->user, a->prpl->name)) { |
---|
[94e7eb3] | 876 | char *s = g_strdup_printf("account %d already has a key, replace it?", n); |
---|
[ad2d8bc] | 877 | query_add(irc, NULL, s, yes_keygen, NULL, NULL, a); |
---|
[82e8fe8] | 878 | g_free(s); |
---|
[94e7eb3] | 879 | } else { |
---|
| 880 | otr_keygen(irc, a->user, a->prpl->name); |
---|
| 881 | } |
---|
| 882 | } |
---|
| 883 | |
---|
[6738a67] | 884 | void yes_forget_fingerprint(void *data) |
---|
[c595308] | 885 | { |
---|
[6738a67] | 886 | pair_t *p = (pair_t *)data; |
---|
| 887 | irc_t *irc = (irc_t *)p->fst; |
---|
| 888 | Fingerprint *fp = (Fingerprint *)p->snd; |
---|
| 889 | |
---|
| 890 | g_free(p); |
---|
[c595308] | 891 | |
---|
| 892 | if(fp == fp->context->active_fingerprint) { |
---|
[5f4eede] | 893 | irc_usermsg(irc, "that fingerprint is active, terminate otr connection first"); |
---|
[c595308] | 894 | return; |
---|
| 895 | } |
---|
| 896 | |
---|
| 897 | otrl_context_forget_fingerprint(fp, 0); |
---|
| 898 | } |
---|
| 899 | |
---|
[6738a67] | 900 | void yes_forget_context(void *data) |
---|
[c595308] | 901 | { |
---|
[6738a67] | 902 | pair_t *p = (pair_t *)data; |
---|
| 903 | irc_t *irc = (irc_t *)p->fst; |
---|
| 904 | ConnContext *ctx = (ConnContext *)p->snd; |
---|
| 905 | |
---|
| 906 | g_free(p); |
---|
[c595308] | 907 | |
---|
| 908 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
[5f4eede] | 909 | irc_usermsg(irc, "active otr connection with %s, terminate it first", |
---|
| 910 | peernick(irc, ctx->username, ctx->protocol)); |
---|
[c595308] | 911 | return; |
---|
| 912 | } |
---|
| 913 | |
---|
| 914 | if(ctx->msgstate == OTRL_MSGSTATE_FINISHED) |
---|
| 915 | otrl_context_force_plaintext(ctx); |
---|
| 916 | otrl_context_forget(ctx); |
---|
| 917 | } |
---|
| 918 | |
---|
[6738a67] | 919 | void yes_forget_key(void *data) |
---|
[d0faf62] | 920 | { |
---|
| 921 | OtrlPrivKey *key = (OtrlPrivKey *)data; |
---|
| 922 | |
---|
| 923 | otrl_privkey_forget(key); |
---|
[37bff51] | 924 | /* Hm, libotr doesn't seem to offer a function for explicitly /writing/ |
---|
| 925 | keyfiles. So the key will be back on the next load... */ |
---|
| 926 | /* TODO: Actually erase forgotten keys from storage? */ |
---|
[d0faf62] | 927 | } |
---|
| 928 | |
---|
[c595308] | 929 | void cmd_otr_forget(irc_t *irc, char **args) |
---|
| 930 | { |
---|
| 931 | if(!strcmp(args[1], "fingerprint")) |
---|
| 932 | { |
---|
[ad2d8bc] | 933 | irc_user_t *u; |
---|
[c595308] | 934 | ConnContext *ctx; |
---|
| 935 | Fingerprint *fp; |
---|
| 936 | char human[54]; |
---|
| 937 | char *s; |
---|
[6738a67] | 938 | pair_t *p; |
---|
[c595308] | 939 | |
---|
| 940 | if(!args[3]) { |
---|
| 941 | irc_usermsg(irc, "otr %s %s: not enough arguments (2 req.)", args[0], args[1]); |
---|
| 942 | return; |
---|
| 943 | } |
---|
| 944 | |
---|
[e2b15bb] | 945 | /* TODO: allow context specs ("user/proto/account") in 'otr forget fingerprint'? */ |
---|
[ad2d8bc] | 946 | u = irc_user_by_name(irc, args[2]); |
---|
| 947 | if(!u || !u->bu || !u->bu->ic) { |
---|
[c595308] | 948 | irc_usermsg(irc, "%s: unknown user", args[2]); |
---|
| 949 | return; |
---|
| 950 | } |
---|
| 951 | |
---|
[ad2d8bc] | 952 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user, |
---|
| 953 | u->bu->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
[c595308] | 954 | if(!ctx) { |
---|
| 955 | irc_usermsg(irc, "no otr context with %s", args[2]); |
---|
| 956 | return; |
---|
| 957 | } |
---|
| 958 | |
---|
| 959 | fp = match_fingerprint(irc, ctx, ((const char **)args)+3); |
---|
| 960 | if(!fp) { |
---|
| 961 | /* match_fingerprint does error messages */ |
---|
| 962 | return; |
---|
| 963 | } |
---|
| 964 | |
---|
| 965 | if(fp == ctx->active_fingerprint) { |
---|
| 966 | irc_usermsg(irc, "that fingerprint is active, terminate otr connection first"); |
---|
| 967 | return; |
---|
| 968 | } |
---|
| 969 | |
---|
| 970 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 971 | s = g_strdup_printf("about to forget fingerprint %s, are you sure?", human); |
---|
[6738a67] | 972 | p = g_malloc(sizeof(pair_t)); |
---|
| 973 | if(!p) |
---|
| 974 | return; |
---|
| 975 | p->fst = irc; |
---|
| 976 | p->snd = fp; |
---|
[ad2d8bc] | 977 | query_add(irc, NULL, s, yes_forget_fingerprint, NULL, NULL, p); |
---|
[82e8fe8] | 978 | g_free(s); |
---|
[c595308] | 979 | } |
---|
| 980 | |
---|
| 981 | else if(!strcmp(args[1], "context")) |
---|
| 982 | { |
---|
[ad2d8bc] | 983 | irc_user_t *u; |
---|
[c595308] | 984 | ConnContext *ctx; |
---|
| 985 | char *s; |
---|
[6738a67] | 986 | pair_t *p; |
---|
[c595308] | 987 | |
---|
[e2b15bb] | 988 | /* TODO: allow context specs ("user/proto/account") in 'otr forget contex'? */ |
---|
[ad2d8bc] | 989 | u = irc_user_by_name(irc, args[2]); |
---|
| 990 | if(!u || !u->bu || !u->bu->ic) { |
---|
[c595308] | 991 | irc_usermsg(irc, "%s: unknown user", args[2]); |
---|
| 992 | return; |
---|
| 993 | } |
---|
| 994 | |
---|
[ad2d8bc] | 995 | ctx = otrl_context_find(irc->otr->us, u->bu->handle, u->bu->ic->acc->user, |
---|
| 996 | u->bu->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
[c595308] | 997 | if(!ctx) { |
---|
| 998 | irc_usermsg(irc, "no otr context with %s", args[2]); |
---|
| 999 | return; |
---|
| 1000 | } |
---|
| 1001 | |
---|
| 1002 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 1003 | irc_usermsg(irc, "active otr connection with %s, terminate it first", args[2]); |
---|
| 1004 | return; |
---|
| 1005 | } |
---|
| 1006 | |
---|
| 1007 | s = g_strdup_printf("about to forget otr data about %s, are you sure?", args[2]); |
---|
[6738a67] | 1008 | p = g_malloc(sizeof(pair_t)); |
---|
| 1009 | if(!p) |
---|
| 1010 | return; |
---|
| 1011 | p->fst = irc; |
---|
| 1012 | p->snd = ctx; |
---|
[ad2d8bc] | 1013 | query_add(irc, NULL, s, yes_forget_context, NULL, NULL, p); |
---|
[82e8fe8] | 1014 | g_free(s); |
---|
[c595308] | 1015 | } |
---|
| 1016 | |
---|
[d0faf62] | 1017 | else if(!strcmp(args[1], "key")) |
---|
| 1018 | { |
---|
| 1019 | OtrlPrivKey *key; |
---|
| 1020 | char *s; |
---|
| 1021 | |
---|
| 1022 | key = match_privkey(irc, ((const char **)args)+2); |
---|
| 1023 | if(!key) { |
---|
| 1024 | /* match_privkey does error messages */ |
---|
| 1025 | return; |
---|
| 1026 | } |
---|
| 1027 | |
---|
| 1028 | s = g_strdup_printf("about to forget the private key for %s/%s, are you sure?", |
---|
| 1029 | key->accountname, key->protocol); |
---|
[ad2d8bc] | 1030 | query_add(irc, NULL, s, yes_forget_key, NULL, NULL, key); |
---|
[d0faf62] | 1031 | g_free(s); |
---|
| 1032 | } |
---|
| 1033 | |
---|
[c595308] | 1034 | else |
---|
| 1035 | { |
---|
| 1036 | irc_usermsg(irc, "otr %s: unknown subcommand \"%s\", see \x02help otr forget\x02", |
---|
| 1037 | args[0], args[1]); |
---|
| 1038 | } |
---|
| 1039 | } |
---|
| 1040 | |
---|
[764c7d1] | 1041 | |
---|
| 1042 | /*** local helpers / subroutines: ***/ |
---|
| 1043 | |
---|
| 1044 | /* Socialist Millionaires' Protocol */ |
---|
| 1045 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs) |
---|
| 1046 | { |
---|
[ad2d8bc] | 1047 | irc_t *irc = ic->bee->ui_data; |
---|
[dc9797f] | 1048 | OtrlUserState us = irc->otr->us; |
---|
[764c7d1] | 1049 | OtrlMessageAppOps *ops = &global.otr_ops; |
---|
| 1050 | OtrlTLV *tlv = NULL; |
---|
| 1051 | ConnContext *context; |
---|
| 1052 | NextExpectedSMP nextMsg; |
---|
[ad2d8bc] | 1053 | irc_user_t *u; |
---|
| 1054 | bee_user_t *bu; |
---|
[764c7d1] | 1055 | |
---|
[ad2d8bc] | 1056 | bu = bee_user_by_handle(ic->bee, ic, handle); |
---|
| 1057 | if(!bu || !(u = bu->ui_data)) return; |
---|
[764c7d1] | 1058 | context = otrl_context_find(us, handle, |
---|
| 1059 | ic->acc->user, ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
[3c80a9d] | 1060 | if(!context) { |
---|
| 1061 | /* huh? out of memory or what? */ |
---|
| 1062 | return; |
---|
| 1063 | } |
---|
[764c7d1] | 1064 | nextMsg = context->smstate->nextExpected; |
---|
| 1065 | |
---|
| 1066 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP1); |
---|
| 1067 | if (tlv) { |
---|
| 1068 | if (nextMsg != OTRL_SMP_EXPECT1) { |
---|
| 1069 | irc_usermsg(irc, "smp %s: spurious SMP1 received, aborting", u->nick); |
---|
[ad2d8bc] | 1070 | otrl_message_abort_smp(us, ops, u->bu->ic, context); |
---|
[764c7d1] | 1071 | otrl_sm_state_free(context->smstate); |
---|
| 1072 | } else { |
---|
| 1073 | irc_usermsg(irc, "smp: initiated by %s" |
---|
| 1074 | " - respond with \x02otr smp %s <secret>\x02", |
---|
| 1075 | u->nick, u->nick); |
---|
| 1076 | /* smp stays in EXPECT1 until user responds */ |
---|
| 1077 | } |
---|
| 1078 | } |
---|
| 1079 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP2); |
---|
| 1080 | if (tlv) { |
---|
| 1081 | if (nextMsg != OTRL_SMP_EXPECT2) { |
---|
| 1082 | irc_usermsg(irc, "smp %s: spurious SMP2 received, aborting", u->nick); |
---|
[ad2d8bc] | 1083 | otrl_message_abort_smp(us, ops, u->bu->ic, context); |
---|
[764c7d1] | 1084 | otrl_sm_state_free(context->smstate); |
---|
| 1085 | } else { |
---|
| 1086 | /* SMP2 received, otrl_message_receiving will have sent SMP3 */ |
---|
| 1087 | context->smstate->nextExpected = OTRL_SMP_EXPECT4; |
---|
| 1088 | } |
---|
| 1089 | } |
---|
| 1090 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP3); |
---|
| 1091 | if (tlv) { |
---|
| 1092 | if (nextMsg != OTRL_SMP_EXPECT3) { |
---|
| 1093 | irc_usermsg(irc, "smp %s: spurious SMP3 received, aborting", u->nick); |
---|
[ad2d8bc] | 1094 | otrl_message_abort_smp(us, ops, u->bu->ic, context); |
---|
[764c7d1] | 1095 | otrl_sm_state_free(context->smstate); |
---|
| 1096 | } else { |
---|
| 1097 | /* SMP3 received, otrl_message_receiving will have sent SMP4 and set fp trust */ |
---|
| 1098 | const char *trust = context->active_fingerprint->trust; |
---|
| 1099 | if(!trust || trust[0]=='\0') { |
---|
| 1100 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 1101 | u->nick); |
---|
| 1102 | } else { |
---|
| 1103 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 1104 | u->nick); |
---|
| 1105 | } |
---|
| 1106 | otrl_sm_state_free(context->smstate); |
---|
| 1107 | /* smp is in back in EXPECT1 */ |
---|
| 1108 | } |
---|
| 1109 | } |
---|
| 1110 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP4); |
---|
| 1111 | if (tlv) { |
---|
| 1112 | if (nextMsg != OTRL_SMP_EXPECT4) { |
---|
| 1113 | irc_usermsg(irc, "smp %s: spurious SMP4 received, aborting", u->nick); |
---|
[ad2d8bc] | 1114 | otrl_message_abort_smp(us, ops, u->bu->ic, context); |
---|
[764c7d1] | 1115 | otrl_sm_state_free(context->smstate); |
---|
| 1116 | } else { |
---|
| 1117 | /* SMP4 received, otrl_message_receiving will have set fp trust */ |
---|
| 1118 | const char *trust = context->active_fingerprint->trust; |
---|
| 1119 | if(!trust || trust[0]=='\0') { |
---|
| 1120 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 1121 | u->nick); |
---|
| 1122 | } else { |
---|
| 1123 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 1124 | u->nick); |
---|
| 1125 | } |
---|
| 1126 | otrl_sm_state_free(context->smstate); |
---|
| 1127 | /* smp is in back in EXPECT1 */ |
---|
| 1128 | } |
---|
| 1129 | } |
---|
| 1130 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP_ABORT); |
---|
| 1131 | if (tlv) { |
---|
| 1132 | irc_usermsg(irc, "smp: received abort from %s", u->nick); |
---|
| 1133 | otrl_sm_state_free(context->smstate); |
---|
| 1134 | /* smp is in back in EXPECT1 */ |
---|
| 1135 | } |
---|
| 1136 | } |
---|
| 1137 | |
---|
| 1138 | /* helper to assert that account and protocol names given to ops below always |
---|
| 1139 | match the im_connection passed through as opdata */ |
---|
| 1140 | struct im_connection *check_imc(void *opdata, const char *accountname, |
---|
| 1141 | const char *protocol) |
---|
| 1142 | { |
---|
| 1143 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 1144 | |
---|
| 1145 | if (strcmp(accountname, ic->acc->user) != 0) { |
---|
| 1146 | log_message(LOGLVL_WARNING, |
---|
| 1147 | "otr: internal account name mismatch: '%s' vs '%s'", |
---|
| 1148 | accountname, ic->acc->user); |
---|
| 1149 | } |
---|
| 1150 | if (strcmp(protocol, ic->acc->prpl->name) != 0) { |
---|
| 1151 | log_message(LOGLVL_WARNING, |
---|
| 1152 | "otr: internal protocol name mismatch: '%s' vs '%s'", |
---|
| 1153 | protocol, ic->acc->prpl->name); |
---|
| 1154 | } |
---|
| 1155 | |
---|
| 1156 | return ic; |
---|
| 1157 | } |
---|
| 1158 | |
---|
[ad2d8bc] | 1159 | irc_user_t *peeruser(irc_t *irc, const char *handle, const char *protocol) |
---|
[764c7d1] | 1160 | { |
---|
[ad2d8bc] | 1161 | GSList *l; |
---|
[764c7d1] | 1162 | |
---|
[ad2d8bc] | 1163 | for(l=irc->b->users; l; l = l->next) { |
---|
| 1164 | bee_user_t *bu = l->data; |
---|
[764c7d1] | 1165 | struct prpl *prpl; |
---|
[ad2d8bc] | 1166 | if(!bu->ui_data || !bu->ic || !bu->handle) |
---|
[8521b02] | 1167 | continue; |
---|
[ad2d8bc] | 1168 | prpl = bu->ic->acc->prpl; |
---|
[764c7d1] | 1169 | if(strcmp(prpl->name, protocol) == 0 |
---|
[ad2d8bc] | 1170 | && prpl->handle_cmp(bu->handle, handle) == 0) { |
---|
| 1171 | return bu->ui_data; |
---|
[764c7d1] | 1172 | } |
---|
| 1173 | } |
---|
| 1174 | |
---|
[5a71d9c] | 1175 | return NULL; |
---|
| 1176 | } |
---|
| 1177 | |
---|
[8521b02] | 1178 | int hexval(char a) |
---|
| 1179 | { |
---|
| 1180 | int x=tolower(a); |
---|
| 1181 | |
---|
| 1182 | if(x>='a' && x<='f') |
---|
| 1183 | x = x - 'a' + 10; |
---|
| 1184 | else if(x>='0' && x<='9') |
---|
| 1185 | x = x - '0'; |
---|
| 1186 | else |
---|
| 1187 | return -1; |
---|
| 1188 | |
---|
| 1189 | return x; |
---|
| 1190 | } |
---|
| 1191 | |
---|
[5a71d9c] | 1192 | const char *peernick(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1193 | { |
---|
| 1194 | static char fallback[512]; |
---|
| 1195 | |
---|
[ad2d8bc] | 1196 | irc_user_t *u = peeruser(irc, handle, protocol); |
---|
[5a71d9c] | 1197 | if(u) { |
---|
| 1198 | return u->nick; |
---|
| 1199 | } else { |
---|
| 1200 | g_snprintf(fallback, 511, "%s/%s", handle, protocol); |
---|
| 1201 | return fallback; |
---|
| 1202 | } |
---|
| 1203 | } |
---|
| 1204 | |
---|
[ad2d8bc] | 1205 | int otr_update_modeflags(irc_t *irc, irc_user_t *u) |
---|
[5a71d9c] | 1206 | { |
---|
| 1207 | return 1; |
---|
[764c7d1] | 1208 | } |
---|
| 1209 | |
---|
| 1210 | void show_fingerprints(irc_t *irc, ConnContext *ctx) |
---|
| 1211 | { |
---|
| 1212 | char human[45]; |
---|
| 1213 | Fingerprint *fp; |
---|
| 1214 | const char *trust; |
---|
| 1215 | int count=0; |
---|
| 1216 | |
---|
| 1217 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
---|
| 1218 | if(!fp->fingerprint) |
---|
| 1219 | continue; |
---|
| 1220 | count++; |
---|
| 1221 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 1222 | if(!fp->trust || fp->trust[0] == '\0') { |
---|
| 1223 | trust="untrusted"; |
---|
| 1224 | } else { |
---|
| 1225 | trust=fp->trust; |
---|
| 1226 | } |
---|
| 1227 | if(fp == ctx->active_fingerprint) { |
---|
[fd9fa52] | 1228 | irc_usermsg(irc, " \x02%s (%s)\x02", human, trust); |
---|
[764c7d1] | 1229 | } else { |
---|
[fd9fa52] | 1230 | irc_usermsg(irc, " %s (%s)", human, trust); |
---|
[764c7d1] | 1231 | } |
---|
| 1232 | } |
---|
| 1233 | if(count==0) |
---|
[fd9fa52] | 1234 | irc_usermsg(irc, " (none)"); |
---|
[8521b02] | 1235 | } |
---|
| 1236 | |
---|
[c595308] | 1237 | Fingerprint *match_fingerprint(irc_t *irc, ConnContext *ctx, const char **args) |
---|
| 1238 | { |
---|
| 1239 | Fingerprint *fp, *fp2; |
---|
| 1240 | char human[45]; |
---|
| 1241 | char prefix[45], *p; |
---|
| 1242 | int n; |
---|
| 1243 | int i,j; |
---|
| 1244 | |
---|
| 1245 | /* assemble the args into a prefix in standard "human" form */ |
---|
| 1246 | n=0; |
---|
| 1247 | p=prefix; |
---|
| 1248 | for(i=0; args[i]; i++) { |
---|
| 1249 | for(j=0; args[i][j]; j++) { |
---|
| 1250 | char c = toupper(args[i][j]); |
---|
| 1251 | |
---|
| 1252 | if(n>=40) { |
---|
| 1253 | irc_usermsg(irc, "too many fingerprint digits given, expected at most 40"); |
---|
| 1254 | return NULL; |
---|
| 1255 | } |
---|
| 1256 | |
---|
| 1257 | if( (c>='A' && c<='F') || (c>='0' && c<='9') ) { |
---|
| 1258 | *(p++) = c; |
---|
| 1259 | } else { |
---|
| 1260 | irc_usermsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i+1); |
---|
| 1261 | return NULL; |
---|
| 1262 | } |
---|
| 1263 | |
---|
| 1264 | n++; |
---|
| 1265 | if(n%8 == 0) |
---|
| 1266 | *(p++) = ' '; |
---|
| 1267 | } |
---|
| 1268 | } |
---|
| 1269 | *p = '\0'; |
---|
| 1270 | |
---|
| 1271 | /* find first fingerprint with the given prefix */ |
---|
| 1272 | n = strlen(prefix); |
---|
| 1273 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
---|
| 1274 | if(!fp->fingerprint) |
---|
| 1275 | continue; |
---|
| 1276 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 1277 | if(!strncmp(prefix, human, n)) |
---|
| 1278 | break; |
---|
| 1279 | } |
---|
| 1280 | if(!fp) { |
---|
| 1281 | irc_usermsg(irc, "%s: no match", prefix); |
---|
| 1282 | return NULL; |
---|
| 1283 | } |
---|
| 1284 | |
---|
| 1285 | /* make sure the match, if any, is unique */ |
---|
| 1286 | for(fp2=fp->next; fp2; fp2=fp2->next) { |
---|
| 1287 | if(!fp2->fingerprint) |
---|
| 1288 | continue; |
---|
| 1289 | otrl_privkey_hash_to_human(human, fp2->fingerprint); |
---|
| 1290 | if(!strncmp(prefix, human, n)) |
---|
| 1291 | break; |
---|
| 1292 | } |
---|
| 1293 | if(fp2) { |
---|
| 1294 | irc_usermsg(irc, "%s: multiple matches", prefix); |
---|
| 1295 | return NULL; |
---|
| 1296 | } |
---|
| 1297 | |
---|
| 1298 | return fp; |
---|
| 1299 | } |
---|
| 1300 | |
---|
[5f4eede] | 1301 | OtrlPrivKey *match_privkey(irc_t *irc, const char **args) |
---|
| 1302 | { |
---|
| 1303 | OtrlPrivKey *k, *k2; |
---|
| 1304 | char human[45]; |
---|
| 1305 | char prefix[45], *p; |
---|
| 1306 | int n; |
---|
| 1307 | int i,j; |
---|
| 1308 | |
---|
| 1309 | /* assemble the args into a prefix in standard "human" form */ |
---|
| 1310 | n=0; |
---|
| 1311 | p=prefix; |
---|
| 1312 | for(i=0; args[i]; i++) { |
---|
| 1313 | for(j=0; args[i][j]; j++) { |
---|
| 1314 | char c = toupper(args[i][j]); |
---|
| 1315 | |
---|
| 1316 | if(n>=40) { |
---|
| 1317 | irc_usermsg(irc, "too many fingerprint digits given, expected at most 40"); |
---|
| 1318 | return NULL; |
---|
| 1319 | } |
---|
| 1320 | |
---|
| 1321 | if( (c>='A' && c<='F') || (c>='0' && c<='9') ) { |
---|
| 1322 | *(p++) = c; |
---|
| 1323 | } else { |
---|
| 1324 | irc_usermsg(irc, "invalid hex digit '%c' in block %d", args[i][j], i+1); |
---|
| 1325 | return NULL; |
---|
| 1326 | } |
---|
| 1327 | |
---|
| 1328 | n++; |
---|
| 1329 | if(n%8 == 0) |
---|
| 1330 | *(p++) = ' '; |
---|
| 1331 | } |
---|
| 1332 | } |
---|
| 1333 | *p = '\0'; |
---|
| 1334 | |
---|
| 1335 | /* find first key which matches the given prefix */ |
---|
| 1336 | n = strlen(prefix); |
---|
[dc9797f] | 1337 | for(k=irc->otr->us->privkey_root; k; k=k->next) { |
---|
| 1338 | p = otrl_privkey_fingerprint(irc->otr->us, human, k->accountname, k->protocol); |
---|
[5f4eede] | 1339 | if(!p) /* gah! :-P */ |
---|
| 1340 | continue; |
---|
| 1341 | if(!strncmp(prefix, human, n)) |
---|
| 1342 | break; |
---|
| 1343 | } |
---|
| 1344 | if(!k) { |
---|
| 1345 | irc_usermsg(irc, "%s: no match", prefix); |
---|
| 1346 | return NULL; |
---|
| 1347 | } |
---|
| 1348 | |
---|
| 1349 | /* make sure the match, if any, is unique */ |
---|
| 1350 | for(k2=k->next; k2; k2=k2->next) { |
---|
[dc9797f] | 1351 | p = otrl_privkey_fingerprint(irc->otr->us, human, k2->accountname, k2->protocol); |
---|
[5f4eede] | 1352 | if(!p) /* gah! :-P */ |
---|
| 1353 | continue; |
---|
| 1354 | if(!strncmp(prefix, human, n)) |
---|
| 1355 | break; |
---|
| 1356 | } |
---|
| 1357 | if(k2) { |
---|
| 1358 | irc_usermsg(irc, "%s: multiple matches", prefix); |
---|
| 1359 | return NULL; |
---|
| 1360 | } |
---|
| 1361 | |
---|
| 1362 | return k; |
---|
| 1363 | } |
---|
| 1364 | |
---|
[8521b02] | 1365 | void show_general_otr_info(irc_t *irc) |
---|
| 1366 | { |
---|
| 1367 | ConnContext *ctx; |
---|
| 1368 | OtrlPrivKey *key; |
---|
| 1369 | char human[45]; |
---|
[3064ea4] | 1370 | kg_t *kg; |
---|
[8521b02] | 1371 | |
---|
[3064ea4] | 1372 | /* list all privkeys (including ones being generated) */ |
---|
[8521b02] | 1373 | irc_usermsg(irc, "\x1fprivate keys:\x1f"); |
---|
[dc9797f] | 1374 | for(key=irc->otr->us->privkey_root; key; key=key->next) { |
---|
[8521b02] | 1375 | const char *hash; |
---|
| 1376 | |
---|
| 1377 | switch(key->pubkey_type) { |
---|
| 1378 | case OTRL_PUBKEY_TYPE_DSA: |
---|
| 1379 | irc_usermsg(irc, " %s/%s - DSA", key->accountname, key->protocol); |
---|
| 1380 | break; |
---|
| 1381 | default: |
---|
| 1382 | irc_usermsg(irc, " %s/%s - type %d", key->accountname, key->protocol, |
---|
| 1383 | key->pubkey_type); |
---|
| 1384 | } |
---|
| 1385 | |
---|
| 1386 | /* No, it doesn't make much sense to search for the privkey again by |
---|
| 1387 | account/protocol, but libotr currently doesn't provide a direct routine |
---|
| 1388 | for hashing a given 'OtrlPrivKey'... */ |
---|
[dc9797f] | 1389 | hash = otrl_privkey_fingerprint(irc->otr->us, human, key->accountname, key->protocol); |
---|
[8521b02] | 1390 | if(hash) /* should always succeed */ |
---|
| 1391 | irc_usermsg(irc, " %s", human); |
---|
| 1392 | } |
---|
[1221ef0] | 1393 | if(irc->otr->sent_accountname) { |
---|
| 1394 | irc_usermsg(irc, " %s/%s - DSA", irc->otr->sent_accountname, |
---|
| 1395 | irc->otr->sent_protocol); |
---|
| 1396 | irc_usermsg(irc, " (being generated)"); |
---|
| 1397 | } |
---|
[3064ea4] | 1398 | for(kg=irc->otr->todo; kg; kg=kg->next) { |
---|
| 1399 | irc_usermsg(irc, " %s/%s - DSA", kg->accountname, kg->protocol); |
---|
[1221ef0] | 1400 | irc_usermsg(irc, " (queued)"); |
---|
[3064ea4] | 1401 | } |
---|
[1221ef0] | 1402 | if(key == irc->otr->us->privkey_root && |
---|
| 1403 | !irc->otr->sent_accountname && |
---|
| 1404 | kg == irc->otr->todo) |
---|
[3064ea4] | 1405 | irc_usermsg(irc, " (none)"); |
---|
[8521b02] | 1406 | |
---|
| 1407 | /* list all contexts */ |
---|
| 1408 | irc_usermsg(irc, "%s", ""); |
---|
| 1409 | irc_usermsg(irc, "\x1f" "connection contexts:\x1f (bold=currently encrypted)"); |
---|
[dc9797f] | 1410 | for(ctx=irc->otr->us->context_root; ctx; ctx=ctx->next) {\ |
---|
[ad2d8bc] | 1411 | irc_user_t *u; |
---|
[8521b02] | 1412 | char *userstring; |
---|
| 1413 | |
---|
| 1414 | u = peeruser(irc, ctx->username, ctx->protocol); |
---|
| 1415 | if(u) |
---|
| 1416 | userstring = g_strdup_printf("%s/%s/%s (%s)", |
---|
| 1417 | ctx->username, ctx->protocol, ctx->accountname, u->nick); |
---|
| 1418 | else |
---|
| 1419 | userstring = g_strdup_printf("%s/%s/%s", |
---|
| 1420 | ctx->username, ctx->protocol, ctx->accountname); |
---|
| 1421 | |
---|
| 1422 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 1423 | irc_usermsg(irc, " \x02%s\x02", userstring); |
---|
| 1424 | } else { |
---|
| 1425 | irc_usermsg(irc, " %s", userstring); |
---|
| 1426 | } |
---|
| 1427 | |
---|
| 1428 | g_free(userstring); |
---|
| 1429 | } |
---|
[3064ea4] | 1430 | if(ctx == irc->otr->us->context_root) |
---|
| 1431 | irc_usermsg(irc, " (none)"); |
---|
[8521b02] | 1432 | } |
---|
| 1433 | |
---|
| 1434 | void show_otr_context_info(irc_t *irc, ConnContext *ctx) |
---|
| 1435 | { |
---|
| 1436 | switch(ctx->otr_offer) { |
---|
| 1437 | case OFFER_NOT: |
---|
| 1438 | irc_usermsg(irc, " otr offer status: none sent"); |
---|
| 1439 | break; |
---|
| 1440 | case OFFER_SENT: |
---|
| 1441 | irc_usermsg(irc, " otr offer status: awaiting reply"); |
---|
| 1442 | break; |
---|
| 1443 | case OFFER_ACCEPTED: |
---|
| 1444 | irc_usermsg(irc, " otr offer status: accepted our offer"); |
---|
| 1445 | break; |
---|
| 1446 | case OFFER_REJECTED: |
---|
| 1447 | irc_usermsg(irc, " otr offer status: ignored our offer"); |
---|
| 1448 | break; |
---|
| 1449 | default: |
---|
| 1450 | irc_usermsg(irc, " otr offer status: %d", ctx->otr_offer); |
---|
| 1451 | } |
---|
| 1452 | |
---|
| 1453 | switch(ctx->msgstate) { |
---|
| 1454 | case OTRL_MSGSTATE_PLAINTEXT: |
---|
| 1455 | irc_usermsg(irc, " connection state: cleartext"); |
---|
| 1456 | break; |
---|
| 1457 | case OTRL_MSGSTATE_ENCRYPTED: |
---|
| 1458 | irc_usermsg(irc, " connection state: encrypted (v%d)", ctx->protocol_version); |
---|
| 1459 | break; |
---|
| 1460 | case OTRL_MSGSTATE_FINISHED: |
---|
| 1461 | irc_usermsg(irc, " connection state: shut down"); |
---|
| 1462 | break; |
---|
| 1463 | default: |
---|
| 1464 | irc_usermsg(irc, " connection state: %d", ctx->msgstate); |
---|
| 1465 | } |
---|
| 1466 | |
---|
[6c91e6e] | 1467 | irc_usermsg(irc, " fingerprints: (bold=active)"); |
---|
[8521b02] | 1468 | show_fingerprints(irc, ctx); |
---|
[764c7d1] | 1469 | } |
---|
| 1470 | |
---|
[dc9797f] | 1471 | int keygen_in_progress(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1472 | { |
---|
| 1473 | kg_t *kg; |
---|
| 1474 | |
---|
| 1475 | if(!irc->otr->sent_accountname || !irc->otr->sent_protocol) |
---|
| 1476 | return 0; |
---|
| 1477 | |
---|
| 1478 | /* are we currently working on this key? */ |
---|
| 1479 | if(!strcmp(handle, irc->otr->sent_accountname) && |
---|
| 1480 | !strcmp(protocol, irc->otr->sent_protocol)) |
---|
| 1481 | return 1; |
---|
| 1482 | |
---|
| 1483 | /* do we have it queued for later? */ |
---|
| 1484 | for(kg=irc->otr->todo; kg; kg=kg->next) { |
---|
| 1485 | if(!strcmp(handle, kg->accountname) && |
---|
| 1486 | !strcmp(protocol, kg->protocol)) |
---|
| 1487 | return 1; |
---|
| 1488 | } |
---|
| 1489 | |
---|
| 1490 | return 0; |
---|
| 1491 | } |
---|
| 1492 | |
---|
[764c7d1] | 1493 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1494 | { |
---|
[dc9797f] | 1495 | /* do nothing if a key for the requested account is already being generated */ |
---|
| 1496 | if(keygen_in_progress(irc, handle, protocol)) |
---|
| 1497 | return; |
---|
[764c7d1] | 1498 | |
---|
[522a00f] | 1499 | /* see if we already have a keygen child running. if not, start one and put a |
---|
[27db433] | 1500 | handler on its output. */ |
---|
[dc9797f] | 1501 | if(!irc->otr->keygen || waitpid(irc->otr->keygen, NULL, WNOHANG)) { |
---|
[27db433] | 1502 | pid_t p; |
---|
| 1503 | int to[2], from[2]; |
---|
| 1504 | FILE *tof, *fromf; |
---|
| 1505 | |
---|
| 1506 | if(pipe(to) < 0 || pipe(from) < 0) { |
---|
| 1507 | irc_usermsg(irc, "otr keygen: couldn't create pipe: %s", strerror(errno)); |
---|
| 1508 | return; |
---|
| 1509 | } |
---|
| 1510 | |
---|
| 1511 | tof = fdopen(to[1], "w"); |
---|
| 1512 | fromf = fdopen(from[0], "r"); |
---|
| 1513 | if(!tof || !fromf) { |
---|
| 1514 | irc_usermsg(irc, "otr keygen: couldn't streamify pipe: %s", strerror(errno)); |
---|
| 1515 | return; |
---|
| 1516 | } |
---|
| 1517 | |
---|
| 1518 | p = fork(); |
---|
| 1519 | if(p<0) { |
---|
| 1520 | irc_usermsg(irc, "otr keygen: couldn't fork: %s", strerror(errno)); |
---|
| 1521 | return; |
---|
| 1522 | } |
---|
| 1523 | |
---|
| 1524 | if(!p) { |
---|
| 1525 | /* child process */ |
---|
| 1526 | signal(SIGTERM, exit); |
---|
[12cc58b] | 1527 | keygen_child_main(irc->otr->us, to[0], from[1]); |
---|
[27db433] | 1528 | exit(0); |
---|
| 1529 | } |
---|
| 1530 | |
---|
[dc9797f] | 1531 | irc->otr->keygen = p; |
---|
| 1532 | irc->otr->to = tof; |
---|
| 1533 | irc->otr->from = fromf; |
---|
| 1534 | irc->otr->sent_accountname = NULL; |
---|
| 1535 | irc->otr->sent_protocol = NULL; |
---|
| 1536 | irc->otr->todo = NULL; |
---|
[ad2d8bc] | 1537 | b_input_add(from[0], B_EV_IO_READ, keygen_finish_handler, irc); |
---|
[27db433] | 1538 | } |
---|
[764c7d1] | 1539 | |
---|
[dc9797f] | 1540 | /* is the keygen slave currently working? */ |
---|
| 1541 | if(irc->otr->sent_accountname) { |
---|
| 1542 | /* enqueue our job for later transmission */ |
---|
| 1543 | kg_t **kg = &irc->otr->todo; |
---|
| 1544 | while(*kg) |
---|
| 1545 | kg=&((*kg)->next); |
---|
| 1546 | *kg = g_new0(kg_t, 1); |
---|
[ba5add7] | 1547 | (*kg)->accountname = g_strdup(handle); |
---|
| 1548 | (*kg)->protocol = g_strdup(protocol); |
---|
[dc9797f] | 1549 | } else { |
---|
| 1550 | /* send our job over and remember it */ |
---|
| 1551 | fprintf(irc->otr->to, "%s\n%s\n", handle, protocol); |
---|
| 1552 | fflush(irc->otr->to); |
---|
[ba5add7] | 1553 | irc->otr->sent_accountname = g_strdup(handle); |
---|
| 1554 | irc->otr->sent_protocol = g_strdup(protocol); |
---|
[dc9797f] | 1555 | } |
---|
[27db433] | 1556 | } |
---|
[522a00f] | 1557 | |
---|
[12cc58b] | 1558 | void keygen_child_main(OtrlUserState us, int infd, int outfd) |
---|
[27db433] | 1559 | { |
---|
| 1560 | FILE *input, *output; |
---|
| 1561 | char filename[128], accountname[512], protocol[512]; |
---|
| 1562 | gcry_error_t e; |
---|
| 1563 | int tempfd; |
---|
| 1564 | |
---|
| 1565 | input = fdopen(infd, "r"); |
---|
| 1566 | output = fdopen(outfd, "w"); |
---|
| 1567 | |
---|
| 1568 | while(!feof(input) && !ferror(input) && !feof(output) && !ferror(output)) { |
---|
| 1569 | myfgets(accountname, 512, input); |
---|
| 1570 | myfgets(protocol, 512, input); |
---|
[522a00f] | 1571 | |
---|
[27db433] | 1572 | strncpy(filename, "/tmp/bitlbee-XXXXXX", 128); |
---|
| 1573 | tempfd = mkstemp(filename); |
---|
| 1574 | close(tempfd); |
---|
| 1575 | |
---|
| 1576 | e = otrl_privkey_generate(us, filename, accountname, protocol); |
---|
| 1577 | if(e) { |
---|
| 1578 | fprintf(output, "\n"); /* this means failure */ |
---|
| 1579 | fprintf(output, "otr keygen: %s\n", gcry_strerror(e)); |
---|
| 1580 | unlink(filename); |
---|
| 1581 | } else { |
---|
| 1582 | fprintf(output, "%s\n", filename); |
---|
| 1583 | fprintf(output, "otr keygen for %s/%s complete\n", accountname, protocol); |
---|
| 1584 | } |
---|
| 1585 | fflush(output); |
---|
| 1586 | } |
---|
[764c7d1] | 1587 | |
---|
[27db433] | 1588 | fclose(input); |
---|
| 1589 | fclose(output); |
---|
[764c7d1] | 1590 | } |
---|
| 1591 | |
---|
| 1592 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond) |
---|
| 1593 | { |
---|
[27db433] | 1594 | irc_t *irc = (irc_t *)data; |
---|
| 1595 | char filename[512], msg[512]; |
---|
| 1596 | |
---|
[dc9797f] | 1597 | myfgets(filename, 512, irc->otr->from); |
---|
| 1598 | myfgets(msg, 512, irc->otr->from); |
---|
[27db433] | 1599 | |
---|
| 1600 | irc_usermsg(irc, "%s", msg); |
---|
| 1601 | if(filename[0]) { |
---|
[ad2d8bc] | 1602 | char *kf = g_strdup_printf("%s%s.otr_keys", global.conf->configdir, irc->user->nick); |
---|
[27db433] | 1603 | char *tmp = g_strdup_printf("%s.new", kf); |
---|
| 1604 | copyfile(filename, tmp); |
---|
| 1605 | unlink(filename); |
---|
| 1606 | rename(tmp,kf); |
---|
[dc9797f] | 1607 | otrl_privkey_read(irc->otr->us, kf); |
---|
[27db433] | 1608 | g_free(kf); |
---|
| 1609 | g_free(tmp); |
---|
| 1610 | } |
---|
[dc9797f] | 1611 | |
---|
| 1612 | /* forget this job */ |
---|
[ba5add7] | 1613 | g_free(irc->otr->sent_accountname); |
---|
| 1614 | g_free(irc->otr->sent_protocol); |
---|
[dc9797f] | 1615 | irc->otr->sent_accountname = NULL; |
---|
| 1616 | irc->otr->sent_protocol = NULL; |
---|
| 1617 | |
---|
| 1618 | /* see if there are any more in the queue */ |
---|
| 1619 | if(irc->otr->todo) { |
---|
| 1620 | kg_t *p = irc->otr->todo; |
---|
| 1621 | /* send the next one over */ |
---|
| 1622 | fprintf(irc->otr->to, "%s\n%s\n", p->accountname, p->protocol); |
---|
| 1623 | fflush(irc->otr->to); |
---|
| 1624 | irc->otr->sent_accountname = p->accountname; |
---|
| 1625 | irc->otr->sent_protocol = p->protocol; |
---|
| 1626 | irc->otr->todo = p->next; |
---|
| 1627 | g_free(p); |
---|
| 1628 | return TRUE; /* keep watching */ |
---|
| 1629 | } else { |
---|
| 1630 | /* okay, the slave is idle now, so kill him */ |
---|
| 1631 | fclose(irc->otr->from); |
---|
| 1632 | fclose(irc->otr->to); |
---|
| 1633 | kill(irc->otr->keygen, SIGTERM); |
---|
| 1634 | waitpid(irc->otr->keygen, NULL, 0); |
---|
| 1635 | irc->otr->keygen = 0; |
---|
[27db433] | 1636 | return FALSE; /* unregister ourselves */ |
---|
| 1637 | } |
---|
| 1638 | } |
---|
| 1639 | |
---|
| 1640 | void copyfile(const char *a, const char *b) |
---|
| 1641 | { |
---|
| 1642 | int fda, fdb; |
---|
| 1643 | int n; |
---|
| 1644 | char buf[1024]; |
---|
| 1645 | |
---|
| 1646 | fda = open(a, O_RDONLY); |
---|
| 1647 | fdb = open(b, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
---|
| 1648 | |
---|
| 1649 | while((n=read(fda, buf, 1024)) > 0) |
---|
| 1650 | write(fdb, buf, n); |
---|
| 1651 | |
---|
| 1652 | close(fda); |
---|
| 1653 | close(fdb); |
---|
| 1654 | } |
---|
| 1655 | |
---|
| 1656 | void myfgets(char *s, int size, FILE *stream) |
---|
| 1657 | { |
---|
| 1658 | if(!fgets(s, size, stream)) { |
---|
| 1659 | s[0] = '\0'; |
---|
| 1660 | } else { |
---|
| 1661 | int n = strlen(s); |
---|
| 1662 | if(n>0 && s[n-1] == '\n') |
---|
| 1663 | s[n-1] = '\0'; |
---|
| 1664 | } |
---|
[764c7d1] | 1665 | } |
---|
| 1666 | |
---|
[6738a67] | 1667 | void yes_keygen(void *data) |
---|
[764c7d1] | 1668 | { |
---|
| 1669 | account_t *acc = (account_t *)data; |
---|
[ad2d8bc] | 1670 | irc_t *irc = acc->bee->ui_data; |
---|
[764c7d1] | 1671 | |
---|
[ad2d8bc] | 1672 | if(keygen_in_progress(irc, acc->user, acc->prpl->name)) { |
---|
| 1673 | irc_usermsg(irc, "keygen for %s/%s already in progress", |
---|
[dc9797f] | 1674 | acc->user, acc->prpl->name); |
---|
| 1675 | } else { |
---|
[ad2d8bc] | 1676 | irc_usermsg(irc, "starting background keygen for %s/%s", |
---|
[3064ea4] | 1677 | acc->user, acc->prpl->name); |
---|
[ad2d8bc] | 1678 | irc_usermsg(irc, "you will be notified when it completes"); |
---|
| 1679 | otr_keygen(irc, acc->user, acc->prpl->name); |
---|
[dc9797f] | 1680 | } |
---|
[764c7d1] | 1681 | } |
---|
| 1682 | |
---|
| 1683 | |
---|
| 1684 | #else /* WITH_OTR undefined */ |
---|
| 1685 | |
---|
| 1686 | void cmd_otr(irc_t *irc, char **args) |
---|
| 1687 | { |
---|
| 1688 | irc_usermsg(irc, "otr: n/a, compiled without OTR support"); |
---|
| 1689 | } |
---|
| 1690 | |
---|
| 1691 | #endif |
---|