[764c7d1] | 1 | #include "bitlbee.h" |
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| 2 | #ifdef WITH_OTR |
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| 3 | #include "irc.h" |
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| 4 | #include "otr.h" |
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| 5 | #include <sys/types.h> |
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| 6 | #include <unistd.h> |
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| 7 | |
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| 8 | /** |
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| 9 | files used to store OTR data: |
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| 10 | $configdir/$nick.otr_keys |
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| 11 | $configdir/$nick.otr_fprints |
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| 12 | **/ |
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| 13 | |
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| 14 | |
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| 15 | /** OTR interface routines for the OtrlMessageAppOps struct: **/ |
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| 16 | |
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| 17 | OtrlPolicy op_policy(void *opdata, ConnContext *context); |
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| 18 | |
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| 19 | void op_create_privkey(void *opdata, const char *accountname, const char *protocol); |
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| 20 | |
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| 21 | int op_is_logged_in(void *opdata, const char *accountname, const char *protocol, |
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| 22 | const char *recipient); |
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| 23 | |
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| 24 | void op_inject_message(void *opdata, const char *accountname, const char *protocol, |
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| 25 | const char *recipient, const char *message); |
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| 26 | |
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| 27 | int op_display_otr_message(void *opdata, const char *accountname, const char *protocol, |
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| 28 | const char *username, const char *msg); |
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| 29 | |
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| 30 | void op_new_fingerprint(void *opdata, OtrlUserState us, const char *accountname, |
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| 31 | const char *protocol, const char *username, unsigned char fingerprint[20]); |
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| 32 | |
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| 33 | void op_write_fingerprints(void *opdata); |
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| 34 | |
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| 35 | void op_gone_secure(void *opdata, ConnContext *context); |
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| 36 | |
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| 37 | void op_gone_insecure(void *opdata, ConnContext *context); |
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| 38 | |
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| 39 | void op_still_secure(void *opdata, ConnContext *context, int is_reply); |
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| 40 | |
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| 41 | void op_log_message(void *opdata, const char *message); |
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| 42 | |
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[a13855a] | 43 | int op_max_message_size(void *opdata, ConnContext *context); |
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[764c7d1] | 44 | |
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[a13855a] | 45 | const char *op_account_name(void *opdata, const char *account, const char *protocol); |
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[764c7d1] | 46 | |
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| 47 | |
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| 48 | /** otr sub-command handlers: **/ |
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| 49 | |
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| 50 | /* TODO: void cmd_otr_keygen(irc_t *irc, char **args); */ |
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| 51 | void cmd_otr_abort(irc_t *irc, char **args); /* TODO: does this cmd even make sense? */ |
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| 52 | void cmd_otr_request(irc_t *irc, char **args); /* TODO: do we even need this? */ |
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[5a71d9c] | 53 | void cmd_otr_smp(irc_t *irc, char **args); |
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| 54 | void cmd_otr_trust(irc_t *irc, char **args); |
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[764c7d1] | 55 | /* TODO: void cmd_otr_affirm(irc_t *irc, char **args); */ |
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| 56 | void cmd_otr_fprints(irc_t *irc, char **args); |
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| 57 | void cmd_otr_info(irc_t *irc, char **args); |
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| 58 | void cmd_otr_policy(irc_t *irc, char **args); |
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| 59 | |
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| 60 | const command_t otr_commands[] = { |
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| 61 | { "abort", 1, &cmd_otr_abort, 0 }, |
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| 62 | { "request", 1, &cmd_otr_request, 0 }, |
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[5a71d9c] | 63 | { "smp", 2, &cmd_otr_smp, 0 }, |
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| 64 | { "trust", 6, &cmd_otr_trust, 0 }, |
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[764c7d1] | 65 | { "fprints", 0, &cmd_otr_fprints, 0 }, |
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| 66 | { "info", 1, &cmd_otr_info, 0 }, |
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| 67 | { "policy", 0, &cmd_otr_policy, 0 }, |
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| 68 | { NULL } |
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| 69 | }; |
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| 70 | |
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| 71 | |
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| 72 | /** misc. helpers/subroutines: **/ |
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| 73 | |
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| 74 | /* start background thread to generate a (new) key for a given account */ |
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| 75 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol); |
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| 76 | /* keygen thread main func */ |
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| 77 | gpointer otr_keygen_thread_func(gpointer data); |
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| 78 | /* mainloop handler for when keygen thread finishes */ |
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| 79 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond); |
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| 80 | /* data to be passed to otr_keygen_thread_func */ |
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| 81 | struct kgdata { |
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| 82 | irc_t *irc; /* access to OTR userstate */ |
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| 83 | char *keyfile; /* free me! */ |
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| 84 | const char *handle; /* don't free! */ |
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| 85 | const char *protocol; /* don't free! */ |
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| 86 | GMutex *mutex; /* lock for the 'done' flag, free me! */ |
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| 87 | int done; /* is the thread done? */ |
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| 88 | gcry_error_t result; /* return value of otrl_privkey_generate */ |
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| 89 | }; |
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| 90 | |
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| 91 | /* yes/no handlers for "generate key now?" */ |
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| 92 | void yes_keygen(gpointer w, void *data); |
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| 93 | void no_keygen(gpointer w, void *data); |
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| 94 | |
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| 95 | /* helper to make sure accountname and protocol match the incoming "opdata" */ |
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| 96 | struct im_connection *check_imc(void *opdata, const char *accountname, |
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| 97 | const char *protocol); |
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| 98 | |
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[5a71d9c] | 99 | /* determine the nick for a given handle/protocol pair |
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| 100 | returns "handle/protocol" if not found */ |
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[764c7d1] | 101 | const char *peernick(irc_t *irc, const char *handle, const char *protocol); |
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| 102 | |
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[5a71d9c] | 103 | /* determine the user_t for a given handle/protocol pair |
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| 104 | returns NULL if not found */ |
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| 105 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol); |
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| 106 | |
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[764c7d1] | 107 | /* handle SMP TLVs from a received message */ |
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| 108 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs); |
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| 109 | |
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[5a71d9c] | 110 | /* update op/voice flag of given user according to encryption state and settings |
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| 111 | returns 0 if neither op_buddies nor voice_buddies is set to "encrypted", |
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| 112 | i.e. msgstate should be announced seperately */ |
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| 113 | int otr_update_modeflags(irc_t *irc, user_t *u); |
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| 114 | |
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[764c7d1] | 115 | /* show the list of fingerprints associated with a given context */ |
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| 116 | void show_fingerprints(irc_t *irc, ConnContext *ctx); |
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| 117 | |
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| 118 | |
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| 119 | |
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| 120 | /*** routines declared in otr.h: ***/ |
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| 121 | |
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| 122 | void otr_init(void) |
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| 123 | { |
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| 124 | if(!g_thread_supported()) g_thread_init(NULL); |
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| 125 | OTRL_INIT; |
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| 126 | |
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| 127 | /* fill global OtrlMessageAppOps */ |
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| 128 | global.otr_ops.policy = &op_policy; |
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| 129 | global.otr_ops.create_privkey = &op_create_privkey; |
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| 130 | global.otr_ops.is_logged_in = &op_is_logged_in; |
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| 131 | global.otr_ops.inject_message = &op_inject_message; |
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| 132 | global.otr_ops.notify = NULL; |
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| 133 | global.otr_ops.display_otr_message = &op_display_otr_message; |
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| 134 | global.otr_ops.update_context_list = NULL; |
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| 135 | global.otr_ops.protocol_name = NULL; |
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| 136 | global.otr_ops.protocol_name_free = NULL; |
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| 137 | global.otr_ops.new_fingerprint = &op_new_fingerprint; |
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| 138 | global.otr_ops.write_fingerprints = &op_write_fingerprints; |
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| 139 | global.otr_ops.gone_secure = &op_gone_secure; |
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| 140 | global.otr_ops.gone_insecure = &op_gone_insecure; |
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| 141 | global.otr_ops.still_secure = &op_still_secure; |
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| 142 | global.otr_ops.log_message = &op_log_message; |
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[a13855a] | 143 | global.otr_ops.max_message_size = &op_max_message_size; |
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| 144 | global.otr_ops.account_name = &op_account_name; |
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[764c7d1] | 145 | global.otr_ops.account_name_free = NULL; |
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| 146 | } |
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| 147 | |
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| 148 | /* Notice on the otr_mutex: |
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| 149 | |
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| 150 | The incoming/outgoing message handlers try to lock the otr_mutex. If they succeed, |
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| 151 | this will prevent a concurrent keygen (possibly spawned by that very command) |
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| 152 | from messing up the userstate. If the lock fails, that means there already is |
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| 153 | a keygen in progress. Instead of blocking for an unknown time, they |
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| 154 | will bail out gracefully, informing the user of this temporary "coma". |
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| 155 | TODO: Hold back incoming/outgoing messages and process them when keygen completes? |
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| 156 | |
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| 157 | The other routines do not lock the otr_mutex themselves, it is done as a |
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| 158 | catch-all in the root command handler. Rationale: |
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| 159 | a) it's easy to code |
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| 160 | b) it makes it obvious that no command can get its userstate corrupted |
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| 161 | c) the "irc" struct is readily available there for feedback to the user |
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| 162 | */ |
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| 163 | |
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| 164 | void otr_load(irc_t *irc) |
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| 165 | { |
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| 166 | char s[512]; |
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| 167 | account_t *a; |
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| 168 | gcry_error_t e; |
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| 169 | |
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| 170 | log_message(LOGLVL_DEBUG, "otr_load '%s'", irc->nick); |
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| 171 | |
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| 172 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, irc->nick); |
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| 173 | e = otrl_privkey_read(irc->otr_us, s); |
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| 174 | if(e && e!=ENOENT) { |
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[3c80a9d] | 175 | log_message(LOGLVL_ERROR, "otr load: %s: %s", s, strerror(e)); |
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[764c7d1] | 176 | } |
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| 177 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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| 178 | e = otrl_privkey_read_fingerprints(irc->otr_us, s, NULL, NULL); |
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| 179 | if(e && e!=ENOENT) { |
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[3c80a9d] | 180 | log_message(LOGLVL_ERROR, "otr load: %s: %s", s, strerror(e)); |
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[764c7d1] | 181 | } |
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| 182 | |
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| 183 | /* check for otr keys on all accounts */ |
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| 184 | for(a=irc->accounts; a; a=a->next) { |
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| 185 | otr_check_for_key(a); |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | void otr_save(irc_t *irc) |
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| 190 | { |
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| 191 | char s[512]; |
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[3c80a9d] | 192 | gcry_error_t e; |
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[764c7d1] | 193 | |
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| 194 | log_message(LOGLVL_DEBUG, "otr_save '%s'", irc->nick); |
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| 195 | |
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| 196 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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[3c80a9d] | 197 | e = otrl_privkey_write_fingerprints(irc->otr_us, s); |
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| 198 | if(e) { |
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| 199 | log_message(LOGLVL_ERROR, "otr save: %s: %s", s, strerror(e)); |
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| 200 | } |
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[764c7d1] | 201 | } |
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| 202 | |
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| 203 | void otr_remove(const char *nick) |
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| 204 | { |
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| 205 | char s[512]; |
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| 206 | |
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| 207 | log_message(LOGLVL_DEBUG, "otr_remove '%s'", nick); |
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| 208 | |
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| 209 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, nick); |
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| 210 | unlink(s); |
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| 211 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, nick); |
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| 212 | unlink(s); |
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| 213 | } |
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| 214 | |
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| 215 | void otr_rename(const char *onick, const char *nnick) |
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| 216 | { |
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| 217 | char s[512], t[512]; |
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| 218 | |
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| 219 | log_message(LOGLVL_DEBUG, "otr_rename '%s' -> '%s'", onick, nnick); |
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| 220 | |
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| 221 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, onick); |
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| 222 | g_snprintf(t, 511, "%s%s.otr_keys", global.conf->configdir, nnick); |
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| 223 | rename(s,t); |
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| 224 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, onick); |
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| 225 | g_snprintf(t, 511, "%s%s.otr_fprints", global.conf->configdir, nnick); |
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| 226 | rename(s,t); |
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| 227 | } |
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| 228 | |
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| 229 | void otr_check_for_key(account_t *a) |
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| 230 | { |
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| 231 | irc_t *irc = a->irc; |
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[a13855a] | 232 | OtrlPrivKey *k; |
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[764c7d1] | 233 | |
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[a13855a] | 234 | k = otrl_privkey_find(irc->otr_us, a->user, a->prpl->name); |
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| 235 | if(k) { |
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| 236 | irc_usermsg(irc, "otr: %s/%s ready", |
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| 237 | a->user, a->prpl->name); |
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[764c7d1] | 238 | } else { |
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| 239 | otr_keygen(irc, a->user, a->prpl->name); |
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| 240 | } |
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| 241 | } |
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| 242 | |
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| 243 | char *otr_handle_message(struct im_connection *ic, const char *handle, const char *msg) |
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| 244 | { |
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| 245 | int ignore_msg; |
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| 246 | char *newmsg = NULL; |
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| 247 | OtrlTLV *tlvs = NULL; |
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| 248 | char *colormsg; |
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| 249 | |
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| 250 | if(!g_mutex_trylock(ic->irc->otr_mutex)) { |
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[5a71d9c] | 251 | user_t *u = user_findhandle(ic, handle); |
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| 252 | |
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| 253 | /* fallback for non-otr clients */ |
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| 254 | if(u && !u->encrypted) { |
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| 255 | return g_strdup(msg); |
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| 256 | } |
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| 257 | |
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| 258 | /* TODO: queue msgs received during keygen for later? */ |
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| 259 | irc_usermsg(ic->irc, "otr msg from %s during keygen - dropped", |
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[a13855a] | 260 | peernick(ic->irc, handle, ic->acc->prpl->name)); |
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[764c7d1] | 261 | return NULL; |
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| 262 | } |
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| 263 | |
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| 264 | ignore_msg = otrl_message_receiving(ic->irc->otr_us, &global.otr_ops, ic, |
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| 265 | ic->acc->user, ic->acc->prpl->name, handle, msg, &newmsg, |
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| 266 | &tlvs, NULL, NULL); |
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| 267 | |
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| 268 | otr_handle_smp(ic, handle, tlvs); |
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| 269 | |
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| 270 | if(ignore_msg) { |
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| 271 | /* this was an internal OTR protocol message */ |
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| 272 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 273 | return NULL; |
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| 274 | } else if(!newmsg) { |
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| 275 | /* this was a non-OTR message */ |
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| 276 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 277 | return g_strdup(msg); |
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| 278 | } else { |
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| 279 | /* OTR has processed this message */ |
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| 280 | ConnContext *context = otrl_context_find(ic->irc->otr_us, handle, |
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| 281 | ic->acc->user, ic->acc->prpl->name, 0, NULL, NULL, NULL); |
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| 282 | if(context && context->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
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| 283 | /* color according to f'print trust */ |
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| 284 | char color; |
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| 285 | const char *trust = context->active_fingerprint->trust; |
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| 286 | if(trust && trust[0] != '\0') |
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| 287 | color='3'; /* green */ |
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| 288 | else |
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| 289 | color='5'; /* red */ |
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| 290 | colormsg = g_strdup_printf("\x03%c%s\x0F", color, newmsg); |
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| 291 | } else { |
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| 292 | colormsg = g_strdup(newmsg); |
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| 293 | } |
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| 294 | otrl_message_free(newmsg); |
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| 295 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 296 | return colormsg; |
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| 297 | } |
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| 298 | } |
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| 299 | |
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| 300 | int otr_send_message(struct im_connection *ic, const char *handle, const char *msg, int flags) |
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| 301 | { |
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[5a71d9c] | 302 | int st; |
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| 303 | char *otrmsg = NULL; |
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| 304 | ConnContext *ctx = NULL; |
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| 305 | |
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[764c7d1] | 306 | if(!g_mutex_trylock(ic->irc->otr_mutex)) { |
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[5a71d9c] | 307 | user_t *u = user_findhandle(ic, handle); |
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| 308 | |
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| 309 | /* Fallback for non-otr clients. |
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| 310 | Yes, we must be very sure this doesn't send stuff in the clear where it |
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| 311 | shouldn't... */ |
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| 312 | if(u && !u->encrypted) { |
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| 313 | return ic->acc->prpl->buddy_msg(ic, (char *)handle, (char *)msg, flags); |
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| 314 | } |
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| 315 | |
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| 316 | /* otherwise refuse to send */ |
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| 317 | irc_usermsg(ic->irc, "otr msg to %s not sent during keygen", |
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| 318 | peernick(ic->irc, handle, ic->acc->prpl->name)); |
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| 319 | return 1; |
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[764c7d1] | 320 | } |
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| 321 | |
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| 322 | st = otrl_message_sending(ic->irc->otr_us, &global.otr_ops, ic, |
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| 323 | ic->acc->user, ic->acc->prpl->name, handle, |
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| 324 | msg, NULL, &otrmsg, NULL, NULL); |
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| 325 | if(st) { |
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| 326 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 327 | return st; |
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| 328 | } |
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| 329 | |
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| 330 | ctx = otrl_context_find(ic->irc->otr_us, |
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| 331 | handle, ic->acc->user, ic->acc->prpl->name, |
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| 332 | 1, NULL, NULL, NULL); |
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| 333 | |
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| 334 | if(otrmsg) { |
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| 335 | if(!ctx) { |
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| 336 | otrl_message_free(otrmsg); |
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| 337 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 338 | return 1; |
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| 339 | } |
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| 340 | st = otrl_message_fragment_and_send(&global.otr_ops, ic, ctx, |
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| 341 | otrmsg, OTRL_FRAGMENT_SEND_ALL, NULL); |
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| 342 | otrl_message_free(otrmsg); |
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| 343 | } else { |
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| 344 | /* yeah, well, some const casts as usual... ;-) */ |
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| 345 | st = ic->acc->prpl->buddy_msg( ic, (char *)handle, (char *)msg, flags ); |
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| 346 | } |
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| 347 | |
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| 348 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 349 | return st; |
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| 350 | } |
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| 351 | |
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| 352 | void cmd_otr(irc_t *irc, char **args) |
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| 353 | { |
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| 354 | const command_t *cmd; |
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| 355 | |
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| 356 | if(!args[0]) |
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| 357 | return; |
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| 358 | |
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| 359 | if(!args[1]) |
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| 360 | return; |
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| 361 | |
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| 362 | for(cmd=otr_commands; cmd->command; cmd++) { |
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| 363 | if(strcmp(cmd->command, args[1]) == 0) |
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| 364 | break; |
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| 365 | } |
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| 366 | |
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| 367 | if(!cmd->command) { |
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| 368 | irc_usermsg(irc, "%s %s: unknown subcommand, see \x02help otr\x02", |
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| 369 | args[0], args[1]); |
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| 370 | return; |
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| 371 | } |
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| 372 | |
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| 373 | if(!args[cmd->required_parameters+1]) { |
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| 374 | irc_usermsg(irc, "%s %s: not enough arguments (%d req.)", |
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| 375 | args[0], args[1], cmd->required_parameters); |
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| 376 | return; |
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| 377 | } |
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| 378 | |
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| 379 | cmd->execute(irc, args+1); |
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| 380 | } |
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| 381 | |
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| 382 | |
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| 383 | /*** OTR "MessageAppOps" callbacks for global.otr_ui: ***/ |
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| 384 | |
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| 385 | OtrlPolicy op_policy(void *opdata, ConnContext *context) |
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| 386 | { |
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| 387 | /* TODO: OTR policy configurable */ |
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| 388 | return OTRL_POLICY_OPPORTUNISTIC; |
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| 389 | } |
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| 390 | |
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| 391 | void op_create_privkey(void *opdata, const char *accountname, |
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| 392 | const char *protocol) |
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| 393 | { |
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| 394 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
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| 395 | char *s; |
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| 396 | |
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| 397 | log_message(LOGLVL_DEBUG, "op_create_privkey '%s' '%s'", accountname, protocol); |
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| 398 | |
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| 399 | s = g_strdup_printf("oops, no otr privkey for %s/%s - generate one now?", |
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| 400 | accountname, protocol); |
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| 401 | query_add(ic->irc, ic, s, yes_keygen, no_keygen, ic->acc); |
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| 402 | } |
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| 403 | |
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| 404 | int op_is_logged_in(void *opdata, const char *accountname, |
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| 405 | const char *protocol, const char *recipient) |
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| 406 | { |
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| 407 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
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| 408 | user_t *u; |
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| 409 | |
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| 410 | log_message(LOGLVL_DEBUG, "op_is_logged_in '%s' '%s' '%s'", accountname, protocol, recipient); |
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| 411 | |
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| 412 | /* lookup the user_t for the given recipient */ |
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| 413 | u = user_findhandle(ic, recipient); |
---|
| 414 | if(u) { |
---|
| 415 | if(u->online) |
---|
| 416 | return 1; |
---|
| 417 | else |
---|
| 418 | return 0; |
---|
| 419 | } else { |
---|
| 420 | return -1; |
---|
| 421 | } |
---|
| 422 | } |
---|
| 423 | |
---|
| 424 | void op_inject_message(void *opdata, const char *accountname, |
---|
| 425 | const char *protocol, const char *recipient, const char *message) |
---|
| 426 | { |
---|
| 427 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 428 | |
---|
| 429 | log_message(LOGLVL_DEBUG, "op_inject_message '%s' '%s' '%s' '%s'", accountname, protocol, recipient, message); |
---|
| 430 | |
---|
| 431 | if (strcmp(accountname, recipient) == 0) { |
---|
| 432 | /* huh? injecting messages to myself? */ |
---|
| 433 | irc_usermsg(ic->irc, "note to self: %s", message); |
---|
| 434 | } else { |
---|
| 435 | /* need to drop some consts here :-( */ |
---|
| 436 | /* TODO: get flags into op_inject_message?! */ |
---|
| 437 | ic->acc->prpl->buddy_msg(ic, (char *)recipient, (char *)message, 0); |
---|
| 438 | /* ignoring return value :-/ */ |
---|
| 439 | } |
---|
| 440 | } |
---|
| 441 | |
---|
| 442 | int op_display_otr_message(void *opdata, const char *accountname, |
---|
[5a71d9c] | 443 | const char *protocol, const char *username, const char *message) |
---|
[764c7d1] | 444 | { |
---|
| 445 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[5a71d9c] | 446 | char *msg = g_strdup(message); |
---|
[764c7d1] | 447 | |
---|
[5a71d9c] | 448 | log_message(LOGLVL_DEBUG, "op_display_otr_message '%s' '%s' '%s' '%s'", accountname, protocol, username, message); |
---|
[764c7d1] | 449 | |
---|
[5a71d9c] | 450 | strip_html(msg); |
---|
| 451 | irc_usermsg(ic->irc, "otr: %s", msg); |
---|
[764c7d1] | 452 | |
---|
[5a71d9c] | 453 | g_free(msg); |
---|
[764c7d1] | 454 | return 0; |
---|
| 455 | } |
---|
| 456 | |
---|
| 457 | void op_new_fingerprint(void *opdata, OtrlUserState us, |
---|
| 458 | const char *accountname, const char *protocol, |
---|
| 459 | const char *username, unsigned char fingerprint[20]) |
---|
| 460 | { |
---|
| 461 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 462 | char hunam[45]; /* anybody looking? ;-) */ |
---|
| 463 | |
---|
| 464 | otrl_privkey_hash_to_human(hunam, fingerprint); |
---|
| 465 | log_message(LOGLVL_DEBUG, "op_new_fingerprint '%s' '%s' '%s' '%s'", accountname, protocol, username, hunam); |
---|
| 466 | |
---|
| 467 | irc_usermsg(ic->irc, "new fingerprint for %s: %s", |
---|
| 468 | peernick(ic->irc, username, protocol), hunam); |
---|
| 469 | } |
---|
| 470 | |
---|
| 471 | void op_write_fingerprints(void *opdata) |
---|
| 472 | { |
---|
| 473 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 474 | |
---|
| 475 | log_message(LOGLVL_DEBUG, "op_write_fingerprints"); |
---|
| 476 | |
---|
| 477 | otr_save(ic->irc); |
---|
| 478 | } |
---|
| 479 | |
---|
| 480 | void op_gone_secure(void *opdata, ConnContext *context) |
---|
| 481 | { |
---|
| 482 | struct im_connection *ic = |
---|
| 483 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 484 | user_t *u; |
---|
[764c7d1] | 485 | |
---|
| 486 | log_message(LOGLVL_DEBUG, "op_gone_secure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 487 | |
---|
[5a71d9c] | 488 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 489 | if(!u) { |
---|
| 490 | log_message(LOGLVL_ERROR, |
---|
| 491 | "BUG: otr.c: op_gone_secure: user_t for %s/%s not found!", |
---|
| 492 | context->username, context->protocol); |
---|
| 493 | return; |
---|
| 494 | } |
---|
| 495 | if(context->active_fingerprint->trust[0]) |
---|
| 496 | u->encrypted = 2; |
---|
| 497 | else |
---|
| 498 | u->encrypted = 1; |
---|
| 499 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 500 | irc_usermsg(ic->irc, "conversation with %s is now off the record", u->nick); |
---|
[764c7d1] | 501 | } |
---|
| 502 | |
---|
| 503 | void op_gone_insecure(void *opdata, ConnContext *context) |
---|
| 504 | { |
---|
| 505 | struct im_connection *ic = |
---|
| 506 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 507 | user_t *u; |
---|
[764c7d1] | 508 | |
---|
| 509 | log_message(LOGLVL_DEBUG, "op_gone_insecure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 510 | |
---|
[5a71d9c] | 511 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 512 | if(!u) { |
---|
| 513 | log_message(LOGLVL_ERROR, |
---|
| 514 | "BUG: otr.c: op_gone_insecure: user_t for %s/%s not found!", |
---|
| 515 | context->username, context->protocol); |
---|
| 516 | return; |
---|
| 517 | } |
---|
| 518 | u->encrypted = 0; |
---|
| 519 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 520 | irc_usermsg(ic->irc, "conversation with %s is now in the clear", u->nick); |
---|
[764c7d1] | 521 | } |
---|
| 522 | |
---|
| 523 | void op_still_secure(void *opdata, ConnContext *context, int is_reply) |
---|
| 524 | { |
---|
| 525 | struct im_connection *ic = |
---|
| 526 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 527 | user_t *u; |
---|
[764c7d1] | 528 | |
---|
| 529 | log_message(LOGLVL_DEBUG, "op_still_secure '%s' '%s' '%s' is_reply=%d", |
---|
| 530 | context->accountname, context->protocol, context->username, is_reply); |
---|
| 531 | |
---|
[5a71d9c] | 532 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 533 | if(!u) { |
---|
| 534 | log_message(LOGLVL_ERROR, |
---|
| 535 | "BUG: otr.c: op_still_secure: user_t for %s/%s not found!", |
---|
| 536 | context->username, context->protocol); |
---|
| 537 | return; |
---|
| 538 | } |
---|
| 539 | if(context->active_fingerprint->trust[0]) |
---|
| 540 | u->encrypted = 2; |
---|
| 541 | else |
---|
| 542 | u->encrypted = 1; |
---|
| 543 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 544 | irc_usermsg(ic->irc, "otr connection with %s has been refreshed", u->nick); |
---|
[764c7d1] | 545 | } |
---|
| 546 | |
---|
| 547 | void op_log_message(void *opdata, const char *message) |
---|
| 548 | { |
---|
[5a71d9c] | 549 | char *msg = g_strdup(message); |
---|
| 550 | |
---|
| 551 | strip_html(msg); |
---|
| 552 | log_message(LOGLVL_INFO, "otr: %s", msg); |
---|
| 553 | g_free(msg); |
---|
[764c7d1] | 554 | } |
---|
| 555 | |
---|
[a13855a] | 556 | int op_max_message_size(void *opdata, ConnContext *context) |
---|
| 557 | { |
---|
[5a71d9c] | 558 | struct im_connection *ic = |
---|
| 559 | check_imc(opdata, context->accountname, context->protocol); |
---|
| 560 | |
---|
| 561 | return ic->acc->prpl->mms; |
---|
[a13855a] | 562 | } |
---|
| 563 | |
---|
| 564 | const char *op_account_name(void *opdata, const char *account, const char *protocol) |
---|
| 565 | { |
---|
| 566 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 567 | |
---|
| 568 | log_message(LOGLVL_DEBUG, "op_account_name '%s' '%s'", account, protocol); |
---|
| 569 | |
---|
| 570 | return peernick(ic->irc, account, protocol); |
---|
| 571 | } |
---|
| 572 | |
---|
[764c7d1] | 573 | |
---|
| 574 | /*** OTR sub-command handlers ***/ |
---|
| 575 | |
---|
| 576 | void cmd_otr_abort(irc_t *irc, char **args) |
---|
| 577 | { |
---|
| 578 | user_t *u; |
---|
| 579 | |
---|
| 580 | u = user_find(irc, args[1]); |
---|
| 581 | if(!u || !u->ic) { |
---|
| 582 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 583 | return; |
---|
| 584 | } |
---|
| 585 | |
---|
| 586 | otrl_message_disconnect(irc->otr_us, &global.otr_ops, |
---|
| 587 | u->ic, u->ic->acc->user, u->ic->acc->prpl->name, u->handle); |
---|
| 588 | } |
---|
| 589 | |
---|
| 590 | void cmd_otr_request(irc_t *irc, char **args) |
---|
| 591 | { |
---|
| 592 | user_t *u; |
---|
| 593 | |
---|
| 594 | u = user_find(irc, args[1]); |
---|
| 595 | if(!u || !u->ic) { |
---|
| 596 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 597 | return; |
---|
| 598 | } |
---|
| 599 | if(!u->online) { |
---|
| 600 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 601 | return; |
---|
| 602 | } |
---|
| 603 | |
---|
| 604 | imc_buddy_msg(u->ic, u->handle, "?OTR?", 0); |
---|
| 605 | } |
---|
| 606 | |
---|
[5a71d9c] | 607 | void cmd_otr_smp(irc_t *irc, char **args) |
---|
[764c7d1] | 608 | { |
---|
| 609 | user_t *u; |
---|
| 610 | ConnContext *ctx; |
---|
| 611 | |
---|
| 612 | u = user_find(irc, args[1]); |
---|
| 613 | if(!u || !u->ic) { |
---|
| 614 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 615 | return; |
---|
| 616 | } |
---|
| 617 | if(!u->online) { |
---|
| 618 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 619 | return; |
---|
| 620 | } |
---|
| 621 | |
---|
| 622 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 623 | u->ic->acc->user, u->ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
| 624 | if(!ctx) { |
---|
[3c80a9d] | 625 | /* huh? out of memory or what? */ |
---|
[764c7d1] | 626 | return; |
---|
| 627 | } |
---|
| 628 | |
---|
| 629 | if(ctx->smstate->nextExpected != OTRL_SMP_EXPECT1) { |
---|
| 630 | log_message(LOGLVL_INFO, |
---|
| 631 | "SMP already in phase %d, sending abort before reinitiating", |
---|
| 632 | ctx->smstate->nextExpected+1); |
---|
| 633 | otrl_message_abort_smp(irc->otr_us, &global.otr_ops, u->ic, ctx); |
---|
| 634 | otrl_sm_state_free(ctx->smstate); |
---|
| 635 | } |
---|
| 636 | |
---|
| 637 | /* warning: the following assumes that smstates are cleared whenever an SMP |
---|
| 638 | is completed or aborted! */ |
---|
| 639 | if(ctx->smstate->secret == NULL) { |
---|
| 640 | irc_usermsg(irc, "smp: initiating with %s...", u->nick); |
---|
| 641 | otrl_message_initiate_smp(irc->otr_us, &global.otr_ops, |
---|
| 642 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 643 | /* smp is now in EXPECT2 */ |
---|
| 644 | } else { |
---|
| 645 | /* if we're still in EXPECT1 but smstate is initialized, we must have |
---|
| 646 | received the SMP1, so let's issue a response */ |
---|
| 647 | irc_usermsg(irc, "smp: responding to %s...", u->nick); |
---|
| 648 | otrl_message_respond_smp(irc->otr_us, &global.otr_ops, |
---|
| 649 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 650 | /* smp is now in EXPECT3 */ |
---|
| 651 | } |
---|
| 652 | } |
---|
| 653 | |
---|
[5a71d9c] | 654 | int hexval(char a) |
---|
| 655 | { |
---|
| 656 | int x=tolower(a); |
---|
| 657 | |
---|
| 658 | if(x>='a' && x<='f') |
---|
| 659 | x = x - 'a' + 10; |
---|
| 660 | else if(x>='0' && x<='9') |
---|
| 661 | x = x - '0'; |
---|
| 662 | else |
---|
| 663 | return -1; |
---|
| 664 | |
---|
| 665 | return x; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | void cmd_otr_trust(irc_t *irc, char **args) |
---|
| 669 | { |
---|
| 670 | user_t *u; |
---|
| 671 | ConnContext *ctx; |
---|
| 672 | unsigned char raw[20]; |
---|
| 673 | Fingerprint *fp; |
---|
| 674 | int i,j; |
---|
| 675 | |
---|
| 676 | u = user_find(irc, args[1]); |
---|
| 677 | if(!u || !u->ic) { |
---|
| 678 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 679 | return; |
---|
| 680 | } |
---|
| 681 | |
---|
| 682 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 683 | u->ic->acc->user, u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 684 | if(!ctx) { |
---|
| 685 | irc_usermsg(irc, "%s: no otr context with user", args[1]); |
---|
| 686 | return; |
---|
| 687 | } |
---|
| 688 | |
---|
| 689 | /* convert given fingerprint to raw representation */ |
---|
| 690 | for(i=0; i<5; i++) { |
---|
| 691 | for(j=0; j<4; j++) { |
---|
| 692 | char *p = args[2+i]+(2*j); |
---|
| 693 | char *q = p+1; |
---|
| 694 | int x, y; |
---|
| 695 | |
---|
| 696 | if(!*p || !*q) { |
---|
| 697 | irc_usermsg(irc, "failed: truncated fingerprint block %d", i+1); |
---|
| 698 | return; |
---|
| 699 | } |
---|
| 700 | |
---|
| 701 | x = hexval(*p); |
---|
| 702 | y = hexval(*q); |
---|
| 703 | if(x<0) { |
---|
| 704 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+1, i+1); |
---|
| 705 | return; |
---|
| 706 | } |
---|
| 707 | if(y<0) { |
---|
| 708 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+2, i+1); |
---|
| 709 | return; |
---|
| 710 | } |
---|
| 711 | |
---|
| 712 | raw[i*4+j] = x*16 + y; |
---|
| 713 | } |
---|
| 714 | } |
---|
| 715 | fp = otrl_context_find_fingerprint(ctx, raw, 0, NULL); |
---|
| 716 | if(!fp) { |
---|
| 717 | irc_usermsg(irc, "failed: no such fingerprint for %s", args[1]); |
---|
| 718 | } else { |
---|
| 719 | char *trust = args[7] ? args[7] : "affirmed"; |
---|
| 720 | otrl_context_set_trust(fp, trust); |
---|
| 721 | irc_usermsg(irc, "fingerprint match, trust set to \"%s\"", trust); |
---|
| 722 | if(u->encrypted) |
---|
| 723 | u->encrypted = 2; |
---|
| 724 | otr_update_modeflags(irc, u); |
---|
| 725 | } |
---|
| 726 | } |
---|
| 727 | |
---|
[764c7d1] | 728 | void cmd_otr_fprints(irc_t *irc, char **args) |
---|
| 729 | { |
---|
| 730 | if(args[1]) { |
---|
| 731 | /* list given buddy's fingerprints */ |
---|
| 732 | user_t *u; |
---|
| 733 | ConnContext *ctx; |
---|
| 734 | |
---|
| 735 | u = user_find(irc, args[1]); |
---|
| 736 | if(!u || !u->ic) { |
---|
| 737 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 738 | return; |
---|
| 739 | } |
---|
| 740 | |
---|
| 741 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 742 | u->ic->acc->user, u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 743 | if(!ctx) { |
---|
| 744 | irc_usermsg(irc, "no fingerprints"); |
---|
| 745 | } else { |
---|
| 746 | show_fingerprints(irc, ctx); |
---|
| 747 | } |
---|
| 748 | } else { |
---|
| 749 | /* list all known fingerprints */ |
---|
| 750 | ConnContext *ctx; |
---|
| 751 | for(ctx=irc->otr_us->context_root; ctx; ctx=ctx->next) { |
---|
| 752 | irc_usermsg(irc, "[%s]", peernick(irc, ctx->username, ctx->protocol)); |
---|
| 753 | show_fingerprints(irc, ctx); |
---|
| 754 | } |
---|
| 755 | if(!irc->otr_us->context_root) { |
---|
| 756 | irc_usermsg(irc, "no fingerprints"); |
---|
| 757 | } |
---|
| 758 | } |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | void cmd_otr_info(irc_t *irc, char **args) |
---|
| 762 | { |
---|
| 763 | user_t *u; |
---|
| 764 | ConnContext *ctx; |
---|
| 765 | Fingerprint *fp; |
---|
| 766 | char human[45]; |
---|
| 767 | const char *offer_status; |
---|
| 768 | const char *message_state; |
---|
| 769 | const char *trust; |
---|
| 770 | |
---|
| 771 | if(!args) { |
---|
| 772 | irc_usermsg(irc, "no args?!"); |
---|
| 773 | return; |
---|
| 774 | } |
---|
| 775 | if(!args[1]) { |
---|
| 776 | irc_usermsg(irc, "no args[1]?!"); |
---|
| 777 | return; |
---|
| 778 | } |
---|
| 779 | u = user_find(irc, args[1]); |
---|
| 780 | if(!u || !u->ic) { |
---|
| 781 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 782 | return; |
---|
| 783 | } |
---|
| 784 | |
---|
| 785 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 786 | u->ic->acc->user, u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 787 | if(!ctx) { |
---|
[5a71d9c] | 788 | irc_usermsg(irc, "no otr context with %s", args[1]); |
---|
[764c7d1] | 789 | return; |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | switch(ctx->otr_offer) { |
---|
| 793 | case OFFER_NOT: offer_status="none sent"; break; |
---|
| 794 | case OFFER_SENT: offer_status="awaiting reply"; break; |
---|
| 795 | case OFFER_ACCEPTED: offer_status="accepted our offer"; break; |
---|
| 796 | case OFFER_REJECTED: offer_status="ignored our offer"; break; |
---|
| 797 | default: offer_status="?"; |
---|
| 798 | } |
---|
| 799 | |
---|
| 800 | switch(ctx->msgstate) { |
---|
| 801 | case OTRL_MSGSTATE_PLAINTEXT: message_state="cleartext"; break; |
---|
| 802 | case OTRL_MSGSTATE_ENCRYPTED: message_state="encrypted"; break; |
---|
| 803 | case OTRL_MSGSTATE_FINISHED: message_state="shut down"; break; |
---|
| 804 | default: message_state="?"; |
---|
| 805 | } |
---|
| 806 | |
---|
| 807 | irc_usermsg(irc, "%s is %s/%s; we are %s/%s to them", args[1], |
---|
| 808 | ctx->username, ctx->protocol, ctx->accountname, ctx->protocol); |
---|
| 809 | irc_usermsg(irc, " otr offer status: %s", offer_status); |
---|
| 810 | irc_usermsg(irc, " connection state: %s", message_state); |
---|
[5a71d9c] | 811 | |
---|
| 812 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 813 | irc_usermsg(irc, " protocol version: %d", ctx->protocol_version); |
---|
| 814 | fp = ctx->active_fingerprint; |
---|
| 815 | if(!fp) { |
---|
| 816 | irc_usermsg(irc, " active f'print: none?"); |
---|
[764c7d1] | 817 | } else { |
---|
[5a71d9c] | 818 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 819 | if(!fp->trust || fp->trust[0] == '\0') { |
---|
| 820 | trust="untrusted"; |
---|
| 821 | } else { |
---|
| 822 | trust=fp->trust; |
---|
| 823 | } |
---|
| 824 | irc_usermsg(irc, " active f'print: %s (%s)", human, trust); |
---|
[764c7d1] | 825 | } |
---|
| 826 | } |
---|
| 827 | } |
---|
| 828 | |
---|
| 829 | void cmd_otr_policy(irc_t *irc, char **args) |
---|
| 830 | { |
---|
| 831 | irc_usermsg(irc, "n/a: not implemented"); |
---|
| 832 | } |
---|
| 833 | |
---|
| 834 | |
---|
| 835 | /*** local helpers / subroutines: ***/ |
---|
| 836 | |
---|
| 837 | /* Socialist Millionaires' Protocol */ |
---|
| 838 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs) |
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| 839 | { |
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| 840 | irc_t *irc = ic->irc; |
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| 841 | OtrlUserState us = irc->otr_us; |
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| 842 | OtrlMessageAppOps *ops = &global.otr_ops; |
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| 843 | OtrlTLV *tlv = NULL; |
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| 844 | ConnContext *context; |
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| 845 | NextExpectedSMP nextMsg; |
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| 846 | user_t *u; |
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| 847 | |
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| 848 | u = user_findhandle(ic, handle); |
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| 849 | if(!u) return; |
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| 850 | context = otrl_context_find(us, handle, |
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| 851 | ic->acc->user, ic->acc->prpl->name, 1, NULL, NULL, NULL); |
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[3c80a9d] | 852 | if(!context) { |
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| 853 | /* huh? out of memory or what? */ |
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| 854 | return; |
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| 855 | } |
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[764c7d1] | 856 | nextMsg = context->smstate->nextExpected; |
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| 857 | |
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| 858 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP1); |
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| 859 | if (tlv) { |
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| 860 | if (nextMsg != OTRL_SMP_EXPECT1) { |
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| 861 | irc_usermsg(irc, "smp %s: spurious SMP1 received, aborting", u->nick); |
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| 862 | otrl_message_abort_smp(us, ops, u->ic, context); |
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| 863 | otrl_sm_state_free(context->smstate); |
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| 864 | } else { |
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| 865 | irc_usermsg(irc, "smp: initiated by %s" |
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| 866 | " - respond with \x02otr smp %s <secret>\x02", |
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| 867 | u->nick, u->nick); |
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| 868 | /* smp stays in EXPECT1 until user responds */ |
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| 869 | } |
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| 870 | } |
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| 871 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP2); |
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| 872 | if (tlv) { |
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| 873 | if (nextMsg != OTRL_SMP_EXPECT2) { |
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| 874 | irc_usermsg(irc, "smp %s: spurious SMP2 received, aborting", u->nick); |
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| 875 | otrl_message_abort_smp(us, ops, u->ic, context); |
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| 876 | otrl_sm_state_free(context->smstate); |
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| 877 | } else { |
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| 878 | /* SMP2 received, otrl_message_receiving will have sent SMP3 */ |
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| 879 | context->smstate->nextExpected = OTRL_SMP_EXPECT4; |
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| 880 | } |
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| 881 | } |
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| 882 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP3); |
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| 883 | if (tlv) { |
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| 884 | if (nextMsg != OTRL_SMP_EXPECT3) { |
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| 885 | irc_usermsg(irc, "smp %s: spurious SMP3 received, aborting", u->nick); |
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| 886 | otrl_message_abort_smp(us, ops, u->ic, context); |
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| 887 | otrl_sm_state_free(context->smstate); |
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| 888 | } else { |
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| 889 | /* SMP3 received, otrl_message_receiving will have sent SMP4 and set fp trust */ |
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| 890 | const char *trust = context->active_fingerprint->trust; |
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| 891 | if(!trust || trust[0]=='\0') { |
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| 892 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
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| 893 | u->nick); |
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| 894 | } else { |
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| 895 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
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| 896 | u->nick); |
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| 897 | } |
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| 898 | otrl_sm_state_free(context->smstate); |
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| 899 | /* smp is in back in EXPECT1 */ |
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| 900 | } |
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| 901 | } |
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| 902 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP4); |
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| 903 | if (tlv) { |
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| 904 | if (nextMsg != OTRL_SMP_EXPECT4) { |
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| 905 | irc_usermsg(irc, "smp %s: spurious SMP4 received, aborting", u->nick); |
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| 906 | otrl_message_abort_smp(us, ops, u->ic, context); |
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| 907 | otrl_sm_state_free(context->smstate); |
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| 908 | } else { |
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| 909 | /* SMP4 received, otrl_message_receiving will have set fp trust */ |
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| 910 | const char *trust = context->active_fingerprint->trust; |
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| 911 | if(!trust || trust[0]=='\0') { |
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| 912 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
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| 913 | u->nick); |
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| 914 | } else { |
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| 915 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
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| 916 | u->nick); |
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| 917 | } |
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| 918 | otrl_sm_state_free(context->smstate); |
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| 919 | /* smp is in back in EXPECT1 */ |
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| 920 | } |
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| 921 | } |
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| 922 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP_ABORT); |
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| 923 | if (tlv) { |
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| 924 | irc_usermsg(irc, "smp: received abort from %s", u->nick); |
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| 925 | otrl_sm_state_free(context->smstate); |
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| 926 | /* smp is in back in EXPECT1 */ |
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| 927 | } |
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| 928 | } |
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| 929 | |
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| 930 | /* helper to assert that account and protocol names given to ops below always |
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| 931 | match the im_connection passed through as opdata */ |
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| 932 | struct im_connection *check_imc(void *opdata, const char *accountname, |
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| 933 | const char *protocol) |
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| 934 | { |
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| 935 | struct im_connection *ic = (struct im_connection *)opdata; |
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| 936 | |
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| 937 | if (strcmp(accountname, ic->acc->user) != 0) { |
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| 938 | log_message(LOGLVL_WARNING, |
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| 939 | "otr: internal account name mismatch: '%s' vs '%s'", |
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| 940 | accountname, ic->acc->user); |
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| 941 | } |
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| 942 | if (strcmp(protocol, ic->acc->prpl->name) != 0) { |
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| 943 | log_message(LOGLVL_WARNING, |
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| 944 | "otr: internal protocol name mismatch: '%s' vs '%s'", |
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| 945 | protocol, ic->acc->prpl->name); |
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| 946 | } |
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| 947 | |
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| 948 | return ic; |
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| 949 | } |
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| 950 | |
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[5a71d9c] | 951 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol) |
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[764c7d1] | 952 | { |
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| 953 | user_t *u; |
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| 954 | |
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| 955 | for(u=irc->users; u; u=u->next) { |
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| 956 | struct prpl *prpl; |
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| 957 | if(!u->ic || !u->handle) |
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| 958 | break; |
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| 959 | prpl = u->ic->acc->prpl; |
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| 960 | if(strcmp(prpl->name, protocol) == 0 |
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| 961 | && prpl->handle_cmp(u->handle, handle) == 0) { |
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[5a71d9c] | 962 | return u; |
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[764c7d1] | 963 | } |
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| 964 | } |
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| 965 | |
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[5a71d9c] | 966 | return NULL; |
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| 967 | } |
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| 968 | |
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| 969 | const char *peernick(irc_t *irc, const char *handle, const char *protocol) |
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| 970 | { |
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| 971 | static char fallback[512]; |
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| 972 | |
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| 973 | user_t *u = peeruser(irc, handle, protocol); |
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| 974 | if(u) { |
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| 975 | return u->nick; |
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| 976 | } else { |
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| 977 | g_snprintf(fallback, 511, "%s/%s", handle, protocol); |
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| 978 | return fallback; |
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| 979 | } |
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| 980 | } |
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| 981 | |
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| 982 | int otr_update_modeflags(irc_t *irc, user_t *u) |
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| 983 | { |
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| 984 | char *vo = set_getstr(&irc->set, "voice_buddies"); |
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| 985 | char *oo = set_getstr(&irc->set, "op_buddies"); |
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| 986 | char eflag=0, tflag=0; |
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| 987 | int e = u->encrypted; |
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| 988 | int t = (u->encrypted > 1); |
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| 989 | |
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| 990 | if(!strcmp(vo, "encrypted")) |
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| 991 | eflag='v'; |
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| 992 | else if(!strcmp(oo, "encrypted")) |
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| 993 | eflag='o'; |
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| 994 | if(!strcmp(vo, "trusted")) |
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| 995 | tflag='v'; |
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| 996 | else if(!strcmp(oo, "trusted")) |
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| 997 | tflag='o'; |
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| 998 | |
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| 999 | if(!eflag) |
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| 1000 | return 0; |
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| 1001 | |
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| 1002 | if(tflag) { |
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| 1003 | irc_write( irc, ":%s!%s@%s MODE %s %c%c%c%c %s %s", irc->mynick, irc->mynick, irc->myhost, |
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| 1004 | irc->channel, e?'+':'-', eflag, t?'+':'-', tflag, u->nick, u->nick ); |
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| 1005 | } else { |
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| 1006 | irc_write( irc, ":%s!%s@%s MODE %s %c%c %s", irc->mynick, irc->mynick, irc->myhost, |
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| 1007 | irc->channel, e?'+':'-', eflag, u->nick ); |
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| 1008 | } |
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| 1009 | |
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| 1010 | return 1; |
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[764c7d1] | 1011 | } |
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| 1012 | |
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| 1013 | void show_fingerprints(irc_t *irc, ConnContext *ctx) |
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| 1014 | { |
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| 1015 | char human[45]; |
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| 1016 | Fingerprint *fp; |
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| 1017 | const char *trust; |
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| 1018 | int count=0; |
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| 1019 | |
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| 1020 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
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| 1021 | if(!fp->fingerprint) |
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| 1022 | continue; |
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| 1023 | count++; |
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| 1024 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
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| 1025 | if(!fp->trust || fp->trust[0] == '\0') { |
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| 1026 | trust="untrusted"; |
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| 1027 | } else { |
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| 1028 | trust=fp->trust; |
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| 1029 | } |
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| 1030 | if(fp == ctx->active_fingerprint) { |
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| 1031 | irc_usermsg(irc, "\x02%s (%s)\x02", human, trust); |
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| 1032 | } else { |
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| 1033 | irc_usermsg(irc, "%s (%s)", human, trust); |
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| 1034 | } |
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| 1035 | } |
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| 1036 | if(count==0) |
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| 1037 | irc_usermsg(irc, "no fingerprints"); |
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| 1038 | } |
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| 1039 | |
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| 1040 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol) |
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| 1041 | { |
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| 1042 | GError *err; |
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| 1043 | GThread *thr; |
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| 1044 | struct kgdata *kg; |
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| 1045 | gint ev; |
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| 1046 | |
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| 1047 | irc_usermsg(irc, "generating new otr privkey for %s/%s...", |
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| 1048 | handle, protocol); |
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| 1049 | |
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| 1050 | kg = g_new0(struct kgdata, 1); |
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| 1051 | if(!kg) { |
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| 1052 | irc_usermsg(irc, "otr keygen failed: out of memory"); |
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| 1053 | return; |
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| 1054 | } |
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| 1055 | |
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| 1056 | /* Assemble the job description to be passed to thread and handler */ |
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| 1057 | kg->irc = irc; |
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| 1058 | kg->keyfile = g_strdup_printf("%s%s.otr_keys", global.conf->configdir, kg->irc->nick); |
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| 1059 | if(!kg->keyfile) { |
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| 1060 | irc_usermsg(irc, "otr keygen failed: out of memory"); |
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| 1061 | g_free(kg); |
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| 1062 | return; |
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| 1063 | } |
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| 1064 | kg->handle = handle; |
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| 1065 | kg->protocol = protocol; |
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| 1066 | kg->mutex = g_mutex_new(); |
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| 1067 | if(!kg->mutex) { |
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| 1068 | irc_usermsg(irc, "otr keygen failed: couldn't create mutex"); |
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| 1069 | g_free(kg->keyfile); |
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| 1070 | g_free(kg); |
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| 1071 | return; |
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| 1072 | } |
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| 1073 | kg->done = FALSE; |
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| 1074 | |
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| 1075 | /* Poll for completion of the thread periodically. I would have preferred |
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| 1076 | to just wait on a pipe but this way it's portable to Windows. *sigh* |
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| 1077 | */ |
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| 1078 | ev = b_timeout_add(1000, &keygen_finish_handler, kg); |
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| 1079 | if(!ev) { |
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| 1080 | irc_usermsg(irc, "otr keygen failed: couldn't register timeout"); |
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| 1081 | g_free(kg->keyfile); |
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| 1082 | g_mutex_free(kg->mutex); |
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| 1083 | g_free(kg); |
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| 1084 | return; |
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| 1085 | } |
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| 1086 | |
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| 1087 | thr = g_thread_create(&otr_keygen_thread_func, kg, FALSE, &err); |
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| 1088 | if(!thr) { |
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| 1089 | irc_usermsg(irc, "otr keygen failed: %s", err->message); |
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| 1090 | g_free(kg->keyfile); |
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| 1091 | g_mutex_free(kg->mutex); |
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| 1092 | g_free(kg); |
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| 1093 | b_event_remove(ev); |
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| 1094 | } |
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| 1095 | } |
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| 1096 | |
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| 1097 | gpointer otr_keygen_thread_func(gpointer data) |
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| 1098 | { |
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| 1099 | struct kgdata *kg = (struct kgdata *)data; |
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| 1100 | |
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| 1101 | /* lock OTR subsystem and do the work */ |
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| 1102 | g_mutex_lock(kg->irc->otr_mutex); |
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| 1103 | kg->result = otrl_privkey_generate(kg->irc->otr_us, kg->keyfile, kg->handle, |
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| 1104 | kg->protocol); |
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| 1105 | g_mutex_unlock(kg->irc->otr_mutex); |
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| 1106 | /* OTR enabled again */ |
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| 1107 | |
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| 1108 | /* notify mainloop */ |
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| 1109 | g_mutex_lock(kg->mutex); |
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| 1110 | kg->done = TRUE; |
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| 1111 | g_mutex_unlock(kg->mutex); |
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| 1112 | |
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| 1113 | return NULL; |
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| 1114 | } |
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| 1115 | |
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| 1116 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond) |
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| 1117 | { |
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| 1118 | struct kgdata *kg = (struct kgdata *)data; |
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| 1119 | int done; |
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| 1120 | |
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| 1121 | g_mutex_lock(kg->mutex); |
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| 1122 | done = kg->done; |
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| 1123 | g_mutex_unlock(kg->mutex); |
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| 1124 | if(kg->done) { |
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| 1125 | if(kg->result) { |
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[3c80a9d] | 1126 | irc_usermsg(kg->irc, "otr keygen: %s", strerror(kg->result)); |
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[764c7d1] | 1127 | } else { |
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| 1128 | irc_usermsg(kg->irc, "otr keygen for %s/%s complete", kg->handle, kg->protocol); |
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| 1129 | } |
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| 1130 | g_free(kg->keyfile); |
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| 1131 | g_mutex_free(kg->mutex); |
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| 1132 | g_free(kg); |
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| 1133 | return FALSE; /* unregister timeout */ |
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| 1134 | } |
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| 1135 | |
---|
| 1136 | return TRUE; /* still working, continue checking */ |
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| 1137 | } |
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| 1138 | |
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| 1139 | void yes_keygen(gpointer w, void *data) |
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| 1140 | { |
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| 1141 | account_t *acc = (account_t *)data; |
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| 1142 | |
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| 1143 | otr_keygen(acc->irc, acc->user, acc->prpl->name); |
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| 1144 | } |
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| 1145 | |
---|
| 1146 | void no_keygen(gpointer w, void *data) |
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| 1147 | { |
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| 1148 | account_t *acc = (account_t *)data; |
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| 1149 | |
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| 1150 | irc_usermsg(acc->irc, "proceeding without key, otr inoperable on %s/%s", |
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| 1151 | acc->user, acc->prpl->name); |
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[5a71d9c] | 1152 | /* TODO: |
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| 1153 | irc_usermsg(acc->irc, "setting otr policy for %s/%s to \"never\"", |
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| 1154 | acc->user, acc->prpl->name); |
---|
| 1155 | set_setstr(acc->set, "otr_policy", "never"); |
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| 1156 | */ |
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[764c7d1] | 1157 | } |
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| 1158 | |
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| 1159 | |
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| 1160 | #else /* WITH_OTR undefined */ |
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| 1161 | |
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| 1162 | void cmd_otr(irc_t *irc, char **args) |
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| 1163 | { |
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| 1164 | irc_usermsg(irc, "otr: n/a, compiled without OTR support"); |
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| 1165 | } |
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| 1166 | |
---|
| 1167 | #endif |
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