[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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[8521b02] | 50 | void cmd_otr_connect(irc_t *irc, char **args); |
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| 51 | void cmd_otr_disconnect(irc_t *irc, char **args); |
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[5a71d9c] | 52 | void cmd_otr_smp(irc_t *irc, char **args); |
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| 53 | void cmd_otr_trust(irc_t *irc, char **args); |
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[764c7d1] | 54 | void cmd_otr_info(irc_t *irc, char **args); |
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[8521b02] | 55 | /* void cmd_otr_forget(irc_t *irc, char **args); */ |
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[764c7d1] | 56 | |
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| 57 | const command_t otr_commands[] = { |
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[8521b02] | 58 | { "connect", 1, &cmd_otr_connect, 0 }, |
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| 59 | { "disconnect", 1, &cmd_otr_disconnect, 0 }, |
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| 60 | { "smp", 2, &cmd_otr_smp, 0 }, |
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| 61 | { "trust", 6, &cmd_otr_trust, 0 }, |
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| 62 | { "info", 0, &cmd_otr_info, 0 }, |
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| 63 | /* |
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| 64 | { "forget", 1, &cmd_otr_forget, 0 }, |
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| 65 | */ |
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[764c7d1] | 66 | { NULL } |
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| 67 | }; |
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| 68 | |
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| 69 | |
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| 70 | /** misc. helpers/subroutines: **/ |
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| 71 | |
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| 72 | /* start background thread to generate a (new) key for a given account */ |
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| 73 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol); |
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| 74 | /* keygen thread main func */ |
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| 75 | gpointer otr_keygen_thread_func(gpointer data); |
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| 76 | /* mainloop handler for when keygen thread finishes */ |
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| 77 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond); |
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| 78 | /* data to be passed to otr_keygen_thread_func */ |
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| 79 | struct kgdata { |
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| 80 | irc_t *irc; /* access to OTR userstate */ |
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| 81 | char *keyfile; /* free me! */ |
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| 82 | const char *handle; /* don't free! */ |
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| 83 | const char *protocol; /* don't free! */ |
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| 84 | GMutex *mutex; /* lock for the 'done' flag, free me! */ |
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| 85 | int done; /* is the thread done? */ |
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| 86 | gcry_error_t result; /* return value of otrl_privkey_generate */ |
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| 87 | }; |
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| 88 | |
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| 89 | /* yes/no handlers for "generate key now?" */ |
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| 90 | void yes_keygen(gpointer w, void *data); |
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| 91 | void no_keygen(gpointer w, void *data); |
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| 92 | |
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| 93 | /* helper to make sure accountname and protocol match the incoming "opdata" */ |
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| 94 | struct im_connection *check_imc(void *opdata, const char *accountname, |
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| 95 | const char *protocol); |
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| 96 | |
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[5a71d9c] | 97 | /* determine the nick for a given handle/protocol pair |
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| 98 | returns "handle/protocol" if not found */ |
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[764c7d1] | 99 | const char *peernick(irc_t *irc, const char *handle, const char *protocol); |
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| 100 | |
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[8521b02] | 101 | /* turn a hexadecimal digit into its numerical value */ |
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| 102 | int hexval(char a); |
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| 103 | |
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[5a71d9c] | 104 | /* determine the user_t for a given handle/protocol pair |
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| 105 | returns NULL if not found */ |
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| 106 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol); |
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| 107 | |
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[764c7d1] | 108 | /* handle SMP TLVs from a received message */ |
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| 109 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs); |
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| 110 | |
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[5a71d9c] | 111 | /* update op/voice flag of given user according to encryption state and settings |
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| 112 | returns 0 if neither op_buddies nor voice_buddies is set to "encrypted", |
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| 113 | i.e. msgstate should be announced seperately */ |
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| 114 | int otr_update_modeflags(irc_t *irc, user_t *u); |
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| 115 | |
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[8521b02] | 116 | /* show general info about the OTR subsystem; called by 'otr info' */ |
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| 117 | void show_general_otr_info(irc_t *irc); |
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| 118 | |
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| 119 | /* show info about a given OTR context */ |
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| 120 | void show_otr_context_info(irc_t *irc, ConnContext *ctx); |
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| 121 | |
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[764c7d1] | 122 | /* show the list of fingerprints associated with a given context */ |
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| 123 | void show_fingerprints(irc_t *irc, ConnContext *ctx); |
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| 124 | |
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| 125 | |
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| 126 | /*** routines declared in otr.h: ***/ |
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| 127 | |
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| 128 | void otr_init(void) |
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| 129 | { |
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| 130 | if(!g_thread_supported()) g_thread_init(NULL); |
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| 131 | OTRL_INIT; |
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| 132 | |
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| 133 | /* fill global OtrlMessageAppOps */ |
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| 134 | global.otr_ops.policy = &op_policy; |
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| 135 | global.otr_ops.create_privkey = &op_create_privkey; |
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| 136 | global.otr_ops.is_logged_in = &op_is_logged_in; |
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| 137 | global.otr_ops.inject_message = &op_inject_message; |
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| 138 | global.otr_ops.notify = NULL; |
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| 139 | global.otr_ops.display_otr_message = &op_display_otr_message; |
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| 140 | global.otr_ops.update_context_list = NULL; |
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| 141 | global.otr_ops.protocol_name = NULL; |
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| 142 | global.otr_ops.protocol_name_free = NULL; |
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| 143 | global.otr_ops.new_fingerprint = &op_new_fingerprint; |
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| 144 | global.otr_ops.write_fingerprints = &op_write_fingerprints; |
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| 145 | global.otr_ops.gone_secure = &op_gone_secure; |
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| 146 | global.otr_ops.gone_insecure = &op_gone_insecure; |
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| 147 | global.otr_ops.still_secure = &op_still_secure; |
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| 148 | global.otr_ops.log_message = &op_log_message; |
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[a13855a] | 149 | global.otr_ops.max_message_size = &op_max_message_size; |
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| 150 | global.otr_ops.account_name = &op_account_name; |
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[764c7d1] | 151 | global.otr_ops.account_name_free = NULL; |
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| 152 | } |
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| 153 | |
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| 154 | /* Notice on the otr_mutex: |
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| 155 | |
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| 156 | The incoming/outgoing message handlers try to lock the otr_mutex. If they succeed, |
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| 157 | this will prevent a concurrent keygen (possibly spawned by that very command) |
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| 158 | from messing up the userstate. If the lock fails, that means there already is |
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| 159 | a keygen in progress. Instead of blocking for an unknown time, they |
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| 160 | will bail out gracefully, informing the user of this temporary "coma". |
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| 161 | TODO: Hold back incoming/outgoing messages and process them when keygen completes? |
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| 162 | |
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| 163 | The other routines do not lock the otr_mutex themselves, it is done as a |
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| 164 | catch-all in the root command handler. Rationale: |
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| 165 | a) it's easy to code |
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| 166 | b) it makes it obvious that no command can get its userstate corrupted |
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| 167 | c) the "irc" struct is readily available there for feedback to the user |
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| 168 | */ |
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| 169 | |
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| 170 | void otr_load(irc_t *irc) |
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| 171 | { |
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| 172 | char s[512]; |
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| 173 | account_t *a; |
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| 174 | gcry_error_t e; |
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| 175 | |
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| 176 | log_message(LOGLVL_DEBUG, "otr_load '%s'", irc->nick); |
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| 177 | |
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| 178 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, irc->nick); |
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| 179 | e = otrl_privkey_read(irc->otr_us, s); |
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| 180 | if(e && e!=ENOENT) { |
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[3c80a9d] | 181 | log_message(LOGLVL_ERROR, "otr load: %s: %s", s, strerror(e)); |
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[764c7d1] | 182 | } |
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| 183 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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| 184 | e = otrl_privkey_read_fingerprints(irc->otr_us, s, NULL, NULL); |
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| 185 | if(e && e!=ENOENT) { |
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[3c80a9d] | 186 | log_message(LOGLVL_ERROR, "otr load: %s: %s", s, strerror(e)); |
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[764c7d1] | 187 | } |
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| 188 | |
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| 189 | /* check for otr keys on all accounts */ |
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| 190 | for(a=irc->accounts; a; a=a->next) { |
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| 191 | otr_check_for_key(a); |
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| 192 | } |
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| 193 | } |
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| 194 | |
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| 195 | void otr_save(irc_t *irc) |
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| 196 | { |
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| 197 | char s[512]; |
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[3c80a9d] | 198 | gcry_error_t e; |
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[764c7d1] | 199 | |
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| 200 | log_message(LOGLVL_DEBUG, "otr_save '%s'", irc->nick); |
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| 201 | |
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| 202 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, irc->nick); |
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[3c80a9d] | 203 | e = otrl_privkey_write_fingerprints(irc->otr_us, s); |
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| 204 | if(e) { |
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| 205 | log_message(LOGLVL_ERROR, "otr save: %s: %s", s, strerror(e)); |
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| 206 | } |
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[764c7d1] | 207 | } |
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| 208 | |
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| 209 | void otr_remove(const char *nick) |
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| 210 | { |
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| 211 | char s[512]; |
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| 212 | |
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| 213 | log_message(LOGLVL_DEBUG, "otr_remove '%s'", nick); |
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| 214 | |
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| 215 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, nick); |
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| 216 | unlink(s); |
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| 217 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, nick); |
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| 218 | unlink(s); |
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| 219 | } |
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| 220 | |
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| 221 | void otr_rename(const char *onick, const char *nnick) |
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| 222 | { |
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| 223 | char s[512], t[512]; |
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| 224 | |
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| 225 | log_message(LOGLVL_DEBUG, "otr_rename '%s' -> '%s'", onick, nnick); |
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| 226 | |
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| 227 | g_snprintf(s, 511, "%s%s.otr_keys", global.conf->configdir, onick); |
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| 228 | g_snprintf(t, 511, "%s%s.otr_keys", global.conf->configdir, nnick); |
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| 229 | rename(s,t); |
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| 230 | g_snprintf(s, 511, "%s%s.otr_fprints", global.conf->configdir, onick); |
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| 231 | g_snprintf(t, 511, "%s%s.otr_fprints", global.conf->configdir, nnick); |
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| 232 | rename(s,t); |
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| 233 | } |
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| 234 | |
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| 235 | void otr_check_for_key(account_t *a) |
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| 236 | { |
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| 237 | irc_t *irc = a->irc; |
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[a13855a] | 238 | OtrlPrivKey *k; |
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[764c7d1] | 239 | |
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[a13855a] | 240 | k = otrl_privkey_find(irc->otr_us, a->user, a->prpl->name); |
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| 241 | if(k) { |
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| 242 | irc_usermsg(irc, "otr: %s/%s ready", |
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| 243 | a->user, a->prpl->name); |
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[764c7d1] | 244 | } else { |
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| 245 | otr_keygen(irc, a->user, a->prpl->name); |
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| 246 | } |
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| 247 | } |
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| 248 | |
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| 249 | char *otr_handle_message(struct im_connection *ic, const char *handle, const char *msg) |
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| 250 | { |
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| 251 | int ignore_msg; |
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| 252 | char *newmsg = NULL; |
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| 253 | OtrlTLV *tlvs = NULL; |
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| 254 | char *colormsg; |
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| 255 | |
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| 256 | if(!g_mutex_trylock(ic->irc->otr_mutex)) { |
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[5a71d9c] | 257 | user_t *u = user_findhandle(ic, handle); |
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| 258 | |
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| 259 | /* fallback for non-otr clients */ |
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| 260 | if(u && !u->encrypted) { |
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| 261 | return g_strdup(msg); |
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| 262 | } |
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| 263 | |
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| 264 | /* TODO: queue msgs received during keygen for later? */ |
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| 265 | irc_usermsg(ic->irc, "otr msg from %s during keygen - dropped", |
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[a13855a] | 266 | peernick(ic->irc, handle, ic->acc->prpl->name)); |
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[764c7d1] | 267 | return NULL; |
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| 268 | } |
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| 269 | |
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| 270 | ignore_msg = otrl_message_receiving(ic->irc->otr_us, &global.otr_ops, ic, |
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| 271 | ic->acc->user, ic->acc->prpl->name, handle, msg, &newmsg, |
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| 272 | &tlvs, NULL, NULL); |
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| 273 | |
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| 274 | otr_handle_smp(ic, handle, tlvs); |
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| 275 | |
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| 276 | if(ignore_msg) { |
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| 277 | /* this was an internal OTR protocol message */ |
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| 278 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 279 | return NULL; |
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| 280 | } else if(!newmsg) { |
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| 281 | /* this was a non-OTR message */ |
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| 282 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 283 | return g_strdup(msg); |
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| 284 | } else { |
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| 285 | /* OTR has processed this message */ |
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| 286 | ConnContext *context = otrl_context_find(ic->irc->otr_us, handle, |
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| 287 | ic->acc->user, ic->acc->prpl->name, 0, NULL, NULL, NULL); |
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| 288 | if(context && context->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
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| 289 | /* color according to f'print trust */ |
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| 290 | char color; |
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| 291 | const char *trust = context->active_fingerprint->trust; |
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| 292 | if(trust && trust[0] != '\0') |
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| 293 | color='3'; /* green */ |
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| 294 | else |
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| 295 | color='5'; /* red */ |
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| 296 | colormsg = g_strdup_printf("\x03%c%s\x0F", color, newmsg); |
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| 297 | } else { |
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| 298 | colormsg = g_strdup(newmsg); |
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| 299 | } |
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| 300 | otrl_message_free(newmsg); |
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| 301 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 302 | return colormsg; |
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| 303 | } |
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| 304 | } |
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| 305 | |
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| 306 | int otr_send_message(struct im_connection *ic, const char *handle, const char *msg, int flags) |
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| 307 | { |
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[5a71d9c] | 308 | int st; |
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| 309 | char *otrmsg = NULL; |
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| 310 | ConnContext *ctx = NULL; |
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| 311 | |
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[764c7d1] | 312 | if(!g_mutex_trylock(ic->irc->otr_mutex)) { |
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[5a71d9c] | 313 | user_t *u = user_findhandle(ic, handle); |
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| 314 | |
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| 315 | /* Fallback for non-otr clients. |
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| 316 | Yes, we must be very sure this doesn't send stuff in the clear where it |
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| 317 | shouldn't... */ |
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| 318 | if(u && !u->encrypted) { |
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| 319 | return ic->acc->prpl->buddy_msg(ic, (char *)handle, (char *)msg, flags); |
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| 320 | } |
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| 321 | |
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| 322 | /* otherwise refuse to send */ |
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| 323 | irc_usermsg(ic->irc, "otr msg to %s not sent during keygen", |
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| 324 | peernick(ic->irc, handle, ic->acc->prpl->name)); |
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| 325 | return 1; |
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[764c7d1] | 326 | } |
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| 327 | |
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| 328 | st = otrl_message_sending(ic->irc->otr_us, &global.otr_ops, ic, |
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| 329 | ic->acc->user, ic->acc->prpl->name, handle, |
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| 330 | msg, NULL, &otrmsg, NULL, NULL); |
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| 331 | if(st) { |
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| 332 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 333 | return st; |
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| 334 | } |
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| 335 | |
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| 336 | ctx = otrl_context_find(ic->irc->otr_us, |
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| 337 | handle, ic->acc->user, ic->acc->prpl->name, |
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| 338 | 1, NULL, NULL, NULL); |
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| 339 | |
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| 340 | if(otrmsg) { |
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| 341 | if(!ctx) { |
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| 342 | otrl_message_free(otrmsg); |
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| 343 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 344 | return 1; |
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| 345 | } |
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| 346 | st = otrl_message_fragment_and_send(&global.otr_ops, ic, ctx, |
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| 347 | otrmsg, OTRL_FRAGMENT_SEND_ALL, NULL); |
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| 348 | otrl_message_free(otrmsg); |
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| 349 | } else { |
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| 350 | /* yeah, well, some const casts as usual... ;-) */ |
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| 351 | st = ic->acc->prpl->buddy_msg( ic, (char *)handle, (char *)msg, flags ); |
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| 352 | } |
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| 353 | |
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| 354 | g_mutex_unlock(ic->irc->otr_mutex); |
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| 355 | return st; |
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| 356 | } |
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| 357 | |
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| 358 | void cmd_otr(irc_t *irc, char **args) |
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| 359 | { |
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| 360 | const command_t *cmd; |
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| 361 | |
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| 362 | if(!args[0]) |
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| 363 | return; |
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| 364 | |
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| 365 | if(!args[1]) |
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| 366 | return; |
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| 367 | |
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| 368 | for(cmd=otr_commands; cmd->command; cmd++) { |
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| 369 | if(strcmp(cmd->command, args[1]) == 0) |
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| 370 | break; |
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| 371 | } |
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| 372 | |
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| 373 | if(!cmd->command) { |
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| 374 | irc_usermsg(irc, "%s %s: unknown subcommand, see \x02help otr\x02", |
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| 375 | args[0], args[1]); |
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| 376 | return; |
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| 377 | } |
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| 378 | |
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| 379 | if(!args[cmd->required_parameters+1]) { |
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| 380 | irc_usermsg(irc, "%s %s: not enough arguments (%d req.)", |
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| 381 | args[0], args[1], cmd->required_parameters); |
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| 382 | return; |
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| 383 | } |
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| 384 | |
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| 385 | cmd->execute(irc, args+1); |
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| 386 | } |
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| 387 | |
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| 388 | |
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| 389 | /*** OTR "MessageAppOps" callbacks for global.otr_ui: ***/ |
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| 390 | |
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| 391 | OtrlPolicy op_policy(void *opdata, ConnContext *context) |
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| 392 | { |
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| 393 | /* TODO: OTR policy configurable */ |
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| 394 | return OTRL_POLICY_OPPORTUNISTIC; |
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| 395 | } |
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| 396 | |
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| 397 | void op_create_privkey(void *opdata, const char *accountname, |
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| 398 | const char *protocol) |
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| 399 | { |
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| 400 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
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| 401 | char *s; |
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| 402 | |
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| 403 | log_message(LOGLVL_DEBUG, "op_create_privkey '%s' '%s'", accountname, protocol); |
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| 404 | |
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| 405 | s = g_strdup_printf("oops, no otr privkey for %s/%s - generate one now?", |
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| 406 | accountname, protocol); |
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| 407 | query_add(ic->irc, ic, s, yes_keygen, no_keygen, ic->acc); |
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| 408 | } |
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| 409 | |
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| 410 | int op_is_logged_in(void *opdata, const char *accountname, |
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| 411 | const char *protocol, const char *recipient) |
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| 412 | { |
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| 413 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
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| 414 | user_t *u; |
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| 415 | |
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| 416 | log_message(LOGLVL_DEBUG, "op_is_logged_in '%s' '%s' '%s'", accountname, protocol, recipient); |
---|
| 417 | |
---|
| 418 | /* lookup the user_t for the given recipient */ |
---|
| 419 | u = user_findhandle(ic, recipient); |
---|
| 420 | if(u) { |
---|
| 421 | if(u->online) |
---|
| 422 | return 1; |
---|
| 423 | else |
---|
| 424 | return 0; |
---|
| 425 | } else { |
---|
| 426 | return -1; |
---|
| 427 | } |
---|
| 428 | } |
---|
| 429 | |
---|
| 430 | void op_inject_message(void *opdata, const char *accountname, |
---|
| 431 | const char *protocol, const char *recipient, const char *message) |
---|
| 432 | { |
---|
| 433 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 434 | |
---|
| 435 | log_message(LOGLVL_DEBUG, "op_inject_message '%s' '%s' '%s' '%s'", accountname, protocol, recipient, message); |
---|
| 436 | |
---|
| 437 | if (strcmp(accountname, recipient) == 0) { |
---|
| 438 | /* huh? injecting messages to myself? */ |
---|
| 439 | irc_usermsg(ic->irc, "note to self: %s", message); |
---|
| 440 | } else { |
---|
| 441 | /* need to drop some consts here :-( */ |
---|
| 442 | /* TODO: get flags into op_inject_message?! */ |
---|
| 443 | ic->acc->prpl->buddy_msg(ic, (char *)recipient, (char *)message, 0); |
---|
| 444 | /* ignoring return value :-/ */ |
---|
| 445 | } |
---|
| 446 | } |
---|
| 447 | |
---|
| 448 | int op_display_otr_message(void *opdata, const char *accountname, |
---|
[5a71d9c] | 449 | const char *protocol, const char *username, const char *message) |
---|
[764c7d1] | 450 | { |
---|
| 451 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
[5a71d9c] | 452 | char *msg = g_strdup(message); |
---|
[764c7d1] | 453 | |
---|
[5a71d9c] | 454 | log_message(LOGLVL_DEBUG, "op_display_otr_message '%s' '%s' '%s' '%s'", accountname, protocol, username, message); |
---|
[764c7d1] | 455 | |
---|
[5a71d9c] | 456 | strip_html(msg); |
---|
| 457 | irc_usermsg(ic->irc, "otr: %s", msg); |
---|
[764c7d1] | 458 | |
---|
[5a71d9c] | 459 | g_free(msg); |
---|
[764c7d1] | 460 | return 0; |
---|
| 461 | } |
---|
| 462 | |
---|
| 463 | void op_new_fingerprint(void *opdata, OtrlUserState us, |
---|
| 464 | const char *accountname, const char *protocol, |
---|
| 465 | const char *username, unsigned char fingerprint[20]) |
---|
| 466 | { |
---|
| 467 | struct im_connection *ic = check_imc(opdata, accountname, protocol); |
---|
| 468 | char hunam[45]; /* anybody looking? ;-) */ |
---|
| 469 | |
---|
| 470 | otrl_privkey_hash_to_human(hunam, fingerprint); |
---|
| 471 | log_message(LOGLVL_DEBUG, "op_new_fingerprint '%s' '%s' '%s' '%s'", accountname, protocol, username, hunam); |
---|
| 472 | |
---|
| 473 | irc_usermsg(ic->irc, "new fingerprint for %s: %s", |
---|
| 474 | peernick(ic->irc, username, protocol), hunam); |
---|
| 475 | } |
---|
| 476 | |
---|
| 477 | void op_write_fingerprints(void *opdata) |
---|
| 478 | { |
---|
| 479 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 480 | |
---|
| 481 | log_message(LOGLVL_DEBUG, "op_write_fingerprints"); |
---|
| 482 | |
---|
| 483 | otr_save(ic->irc); |
---|
| 484 | } |
---|
| 485 | |
---|
| 486 | void op_gone_secure(void *opdata, ConnContext *context) |
---|
| 487 | { |
---|
| 488 | struct im_connection *ic = |
---|
| 489 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 490 | user_t *u; |
---|
[764c7d1] | 491 | |
---|
| 492 | log_message(LOGLVL_DEBUG, "op_gone_secure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 493 | |
---|
[5a71d9c] | 494 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 495 | if(!u) { |
---|
| 496 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 497 | "BUG: otr.c: op_gone_secure: user_t for %s/%s/%s not found!", |
---|
| 498 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 499 | return; |
---|
| 500 | } |
---|
| 501 | if(context->active_fingerprint->trust[0]) |
---|
| 502 | u->encrypted = 2; |
---|
| 503 | else |
---|
| 504 | u->encrypted = 1; |
---|
| 505 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 506 | irc_usermsg(ic->irc, "conversation with %s is now off the record", u->nick); |
---|
[764c7d1] | 507 | } |
---|
| 508 | |
---|
| 509 | void op_gone_insecure(void *opdata, ConnContext *context) |
---|
| 510 | { |
---|
| 511 | struct im_connection *ic = |
---|
| 512 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 513 | user_t *u; |
---|
[764c7d1] | 514 | |
---|
| 515 | log_message(LOGLVL_DEBUG, "op_gone_insecure '%s' '%s' '%s'", context->accountname, context->protocol, context->username); |
---|
| 516 | |
---|
[5a71d9c] | 517 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 518 | if(!u) { |
---|
| 519 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 520 | "BUG: otr.c: op_gone_insecure: user_t for %s/%s/%s not found!", |
---|
| 521 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 522 | return; |
---|
| 523 | } |
---|
| 524 | u->encrypted = 0; |
---|
| 525 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 526 | irc_usermsg(ic->irc, "conversation with %s is now in the clear", u->nick); |
---|
[764c7d1] | 527 | } |
---|
| 528 | |
---|
| 529 | void op_still_secure(void *opdata, ConnContext *context, int is_reply) |
---|
| 530 | { |
---|
| 531 | struct im_connection *ic = |
---|
| 532 | check_imc(opdata, context->accountname, context->protocol); |
---|
[5a71d9c] | 533 | user_t *u; |
---|
[764c7d1] | 534 | |
---|
| 535 | log_message(LOGLVL_DEBUG, "op_still_secure '%s' '%s' '%s' is_reply=%d", |
---|
| 536 | context->accountname, context->protocol, context->username, is_reply); |
---|
| 537 | |
---|
[5a71d9c] | 538 | u = peeruser(ic->irc, context->username, context->protocol); |
---|
| 539 | if(!u) { |
---|
| 540 | log_message(LOGLVL_ERROR, |
---|
[8521b02] | 541 | "BUG: otr.c: op_still_secure: user_t for %s/%s/%s not found!", |
---|
| 542 | context->username, context->protocol, context->accountname); |
---|
[5a71d9c] | 543 | return; |
---|
| 544 | } |
---|
| 545 | if(context->active_fingerprint->trust[0]) |
---|
| 546 | u->encrypted = 2; |
---|
| 547 | else |
---|
| 548 | u->encrypted = 1; |
---|
| 549 | if(!otr_update_modeflags(ic->irc, u)) |
---|
| 550 | irc_usermsg(ic->irc, "otr connection with %s has been refreshed", u->nick); |
---|
[764c7d1] | 551 | } |
---|
| 552 | |
---|
| 553 | void op_log_message(void *opdata, const char *message) |
---|
| 554 | { |
---|
[5a71d9c] | 555 | char *msg = g_strdup(message); |
---|
| 556 | |
---|
| 557 | strip_html(msg); |
---|
| 558 | log_message(LOGLVL_INFO, "otr: %s", msg); |
---|
| 559 | g_free(msg); |
---|
[764c7d1] | 560 | } |
---|
| 561 | |
---|
[a13855a] | 562 | int op_max_message_size(void *opdata, ConnContext *context) |
---|
| 563 | { |
---|
[5a71d9c] | 564 | struct im_connection *ic = |
---|
| 565 | check_imc(opdata, context->accountname, context->protocol); |
---|
| 566 | |
---|
| 567 | return ic->acc->prpl->mms; |
---|
[a13855a] | 568 | } |
---|
| 569 | |
---|
| 570 | const char *op_account_name(void *opdata, const char *account, const char *protocol) |
---|
| 571 | { |
---|
| 572 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 573 | |
---|
| 574 | log_message(LOGLVL_DEBUG, "op_account_name '%s' '%s'", account, protocol); |
---|
| 575 | |
---|
| 576 | return peernick(ic->irc, account, protocol); |
---|
| 577 | } |
---|
| 578 | |
---|
[764c7d1] | 579 | |
---|
| 580 | /*** OTR sub-command handlers ***/ |
---|
| 581 | |
---|
[8521b02] | 582 | void cmd_otr_disconnect(irc_t *irc, char **args) |
---|
[764c7d1] | 583 | { |
---|
| 584 | user_t *u; |
---|
| 585 | |
---|
| 586 | u = user_find(irc, args[1]); |
---|
| 587 | if(!u || !u->ic) { |
---|
| 588 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 589 | return; |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | otrl_message_disconnect(irc->otr_us, &global.otr_ops, |
---|
| 593 | u->ic, u->ic->acc->user, u->ic->acc->prpl->name, u->handle); |
---|
| 594 | } |
---|
| 595 | |
---|
[8521b02] | 596 | void cmd_otr_connect(irc_t *irc, char **args) |
---|
[764c7d1] | 597 | { |
---|
| 598 | user_t *u; |
---|
| 599 | |
---|
| 600 | u = user_find(irc, args[1]); |
---|
| 601 | if(!u || !u->ic) { |
---|
| 602 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 603 | return; |
---|
| 604 | } |
---|
| 605 | if(!u->online) { |
---|
| 606 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 607 | return; |
---|
| 608 | } |
---|
| 609 | |
---|
| 610 | imc_buddy_msg(u->ic, u->handle, "?OTR?", 0); |
---|
| 611 | } |
---|
| 612 | |
---|
[5a71d9c] | 613 | void cmd_otr_smp(irc_t *irc, char **args) |
---|
[764c7d1] | 614 | { |
---|
| 615 | user_t *u; |
---|
| 616 | ConnContext *ctx; |
---|
| 617 | |
---|
| 618 | u = user_find(irc, args[1]); |
---|
| 619 | if(!u || !u->ic) { |
---|
| 620 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 621 | return; |
---|
| 622 | } |
---|
| 623 | if(!u->online) { |
---|
| 624 | irc_usermsg(irc, "%s is offline", args[1]); |
---|
| 625 | return; |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 629 | u->ic->acc->user, u->ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
| 630 | if(!ctx) { |
---|
[3c80a9d] | 631 | /* huh? out of memory or what? */ |
---|
[764c7d1] | 632 | return; |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | if(ctx->smstate->nextExpected != OTRL_SMP_EXPECT1) { |
---|
| 636 | log_message(LOGLVL_INFO, |
---|
| 637 | "SMP already in phase %d, sending abort before reinitiating", |
---|
| 638 | ctx->smstate->nextExpected+1); |
---|
| 639 | otrl_message_abort_smp(irc->otr_us, &global.otr_ops, u->ic, ctx); |
---|
| 640 | otrl_sm_state_free(ctx->smstate); |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | /* warning: the following assumes that smstates are cleared whenever an SMP |
---|
| 644 | is completed or aborted! */ |
---|
| 645 | if(ctx->smstate->secret == NULL) { |
---|
| 646 | irc_usermsg(irc, "smp: initiating with %s...", u->nick); |
---|
| 647 | otrl_message_initiate_smp(irc->otr_us, &global.otr_ops, |
---|
| 648 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 649 | /* smp is now in EXPECT2 */ |
---|
| 650 | } else { |
---|
| 651 | /* if we're still in EXPECT1 but smstate is initialized, we must have |
---|
| 652 | received the SMP1, so let's issue a response */ |
---|
| 653 | irc_usermsg(irc, "smp: responding to %s...", u->nick); |
---|
| 654 | otrl_message_respond_smp(irc->otr_us, &global.otr_ops, |
---|
| 655 | u->ic, ctx, (unsigned char *)args[2], strlen(args[2])); |
---|
| 656 | /* smp is now in EXPECT3 */ |
---|
| 657 | } |
---|
| 658 | } |
---|
| 659 | |
---|
[5a71d9c] | 660 | void cmd_otr_trust(irc_t *irc, char **args) |
---|
| 661 | { |
---|
| 662 | user_t *u; |
---|
| 663 | ConnContext *ctx; |
---|
| 664 | unsigned char raw[20]; |
---|
| 665 | Fingerprint *fp; |
---|
| 666 | int i,j; |
---|
| 667 | |
---|
| 668 | u = user_find(irc, args[1]); |
---|
| 669 | if(!u || !u->ic) { |
---|
| 670 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 671 | return; |
---|
| 672 | } |
---|
| 673 | |
---|
| 674 | ctx = otrl_context_find(irc->otr_us, u->handle, |
---|
| 675 | u->ic->acc->user, u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 676 | if(!ctx) { |
---|
| 677 | irc_usermsg(irc, "%s: no otr context with user", args[1]); |
---|
| 678 | return; |
---|
| 679 | } |
---|
| 680 | |
---|
| 681 | /* convert given fingerprint to raw representation */ |
---|
| 682 | for(i=0; i<5; i++) { |
---|
| 683 | for(j=0; j<4; j++) { |
---|
| 684 | char *p = args[2+i]+(2*j); |
---|
| 685 | char *q = p+1; |
---|
| 686 | int x, y; |
---|
| 687 | |
---|
| 688 | if(!*p || !*q) { |
---|
| 689 | irc_usermsg(irc, "failed: truncated fingerprint block %d", i+1); |
---|
| 690 | return; |
---|
| 691 | } |
---|
| 692 | |
---|
| 693 | x = hexval(*p); |
---|
| 694 | y = hexval(*q); |
---|
| 695 | if(x<0) { |
---|
| 696 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+1, i+1); |
---|
| 697 | return; |
---|
| 698 | } |
---|
| 699 | if(y<0) { |
---|
| 700 | irc_usermsg(irc, "failed: %d. hex digit of block %d out of range", 2*j+2, i+1); |
---|
| 701 | return; |
---|
| 702 | } |
---|
| 703 | |
---|
| 704 | raw[i*4+j] = x*16 + y; |
---|
| 705 | } |
---|
| 706 | } |
---|
| 707 | fp = otrl_context_find_fingerprint(ctx, raw, 0, NULL); |
---|
| 708 | if(!fp) { |
---|
| 709 | irc_usermsg(irc, "failed: no such fingerprint for %s", args[1]); |
---|
| 710 | } else { |
---|
| 711 | char *trust = args[7] ? args[7] : "affirmed"; |
---|
| 712 | otrl_context_set_trust(fp, trust); |
---|
| 713 | irc_usermsg(irc, "fingerprint match, trust set to \"%s\"", trust); |
---|
| 714 | if(u->encrypted) |
---|
| 715 | u->encrypted = 2; |
---|
| 716 | otr_update_modeflags(irc, u); |
---|
| 717 | } |
---|
| 718 | } |
---|
| 719 | |
---|
[8521b02] | 720 | void cmd_otr_info(irc_t *irc, char **args) |
---|
[764c7d1] | 721 | { |
---|
[8521b02] | 722 | if(!args[1]) { |
---|
| 723 | show_general_otr_info(irc); |
---|
[764c7d1] | 724 | } else { |
---|
[8521b02] | 725 | char *arg = g_strdup(args[1]); |
---|
| 726 | char *myhandle, *handle, *protocol; |
---|
[764c7d1] | 727 | ConnContext *ctx; |
---|
[8521b02] | 728 | |
---|
| 729 | /* interpret arg as 'user/protocol/account' if possible */ |
---|
| 730 | protocol = strchr(arg, '/'); |
---|
| 731 | if(protocol) { |
---|
| 732 | *(protocol++) = '\0'; |
---|
| 733 | myhandle = strchr(protocol, '/'); |
---|
| 734 | if(!myhandle) { |
---|
| 735 | /* TODO: try to find a unique account for this context */ |
---|
| 736 | } |
---|
[764c7d1] | 737 | } |
---|
[8521b02] | 738 | if(protocol && myhandle) { |
---|
| 739 | *(myhandle++) = '\0'; |
---|
| 740 | handle = arg; |
---|
| 741 | ctx = otrl_context_find(irc->otr_us, handle, myhandle, protocol, 0, NULL, NULL, NULL); |
---|
| 742 | if(!ctx) { |
---|
| 743 | irc_usermsg(irc, "no such context (%s %s %s)", handle, protocol, myhandle); |
---|
| 744 | g_free(arg); |
---|
| 745 | return; |
---|
| 746 | } |
---|
[764c7d1] | 747 | } else { |
---|
[8521b02] | 748 | user_t *u = user_find(irc, args[1]); |
---|
| 749 | if(!u || !u->ic) { |
---|
| 750 | irc_usermsg(irc, "%s: unknown user", args[1]); |
---|
| 751 | g_free(arg); |
---|
| 752 | return; |
---|
[5a71d9c] | 753 | } |
---|
[8521b02] | 754 | ctx = otrl_context_find(irc->otr_us, u->handle, u->ic->acc->user, |
---|
| 755 | u->ic->acc->prpl->name, 0, NULL, NULL, NULL); |
---|
| 756 | if(!ctx) { |
---|
| 757 | irc_usermsg(irc, "no otr context with %s", args[1]); |
---|
| 758 | g_free(arg); |
---|
| 759 | return; |
---|
| 760 | } |
---|
| 761 | } |
---|
| 762 | |
---|
| 763 | /* show how we resolved the (nick) argument, if we did */ |
---|
| 764 | if(handle!=arg) { |
---|
| 765 | irc_usermsg(irc, "%s is %s/%s; we are %s/%s to them", args[1], |
---|
| 766 | ctx->username, ctx->protocol, ctx->accountname, ctx->protocol); |
---|
[764c7d1] | 767 | } |
---|
[8521b02] | 768 | show_otr_context_info(irc, ctx); |
---|
| 769 | g_free(arg); |
---|
[764c7d1] | 770 | } |
---|
| 771 | } |
---|
| 772 | |
---|
| 773 | |
---|
| 774 | /*** local helpers / subroutines: ***/ |
---|
| 775 | |
---|
| 776 | /* Socialist Millionaires' Protocol */ |
---|
| 777 | void otr_handle_smp(struct im_connection *ic, const char *handle, OtrlTLV *tlvs) |
---|
| 778 | { |
---|
| 779 | irc_t *irc = ic->irc; |
---|
| 780 | OtrlUserState us = irc->otr_us; |
---|
| 781 | OtrlMessageAppOps *ops = &global.otr_ops; |
---|
| 782 | OtrlTLV *tlv = NULL; |
---|
| 783 | ConnContext *context; |
---|
| 784 | NextExpectedSMP nextMsg; |
---|
| 785 | user_t *u; |
---|
| 786 | |
---|
| 787 | u = user_findhandle(ic, handle); |
---|
| 788 | if(!u) return; |
---|
| 789 | context = otrl_context_find(us, handle, |
---|
| 790 | ic->acc->user, ic->acc->prpl->name, 1, NULL, NULL, NULL); |
---|
[3c80a9d] | 791 | if(!context) { |
---|
| 792 | /* huh? out of memory or what? */ |
---|
| 793 | return; |
---|
| 794 | } |
---|
[764c7d1] | 795 | nextMsg = context->smstate->nextExpected; |
---|
| 796 | |
---|
| 797 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP1); |
---|
| 798 | if (tlv) { |
---|
| 799 | if (nextMsg != OTRL_SMP_EXPECT1) { |
---|
| 800 | irc_usermsg(irc, "smp %s: spurious SMP1 received, aborting", u->nick); |
---|
| 801 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 802 | otrl_sm_state_free(context->smstate); |
---|
| 803 | } else { |
---|
| 804 | irc_usermsg(irc, "smp: initiated by %s" |
---|
| 805 | " - respond with \x02otr smp %s <secret>\x02", |
---|
| 806 | u->nick, u->nick); |
---|
| 807 | /* smp stays in EXPECT1 until user responds */ |
---|
| 808 | } |
---|
| 809 | } |
---|
| 810 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP2); |
---|
| 811 | if (tlv) { |
---|
| 812 | if (nextMsg != OTRL_SMP_EXPECT2) { |
---|
| 813 | irc_usermsg(irc, "smp %s: spurious SMP2 received, aborting", u->nick); |
---|
| 814 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 815 | otrl_sm_state_free(context->smstate); |
---|
| 816 | } else { |
---|
| 817 | /* SMP2 received, otrl_message_receiving will have sent SMP3 */ |
---|
| 818 | context->smstate->nextExpected = OTRL_SMP_EXPECT4; |
---|
| 819 | } |
---|
| 820 | } |
---|
| 821 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP3); |
---|
| 822 | if (tlv) { |
---|
| 823 | if (nextMsg != OTRL_SMP_EXPECT3) { |
---|
| 824 | irc_usermsg(irc, "smp %s: spurious SMP3 received, aborting", u->nick); |
---|
| 825 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 826 | otrl_sm_state_free(context->smstate); |
---|
| 827 | } else { |
---|
| 828 | /* SMP3 received, otrl_message_receiving will have sent SMP4 and set fp trust */ |
---|
| 829 | const char *trust = context->active_fingerprint->trust; |
---|
| 830 | if(!trust || trust[0]=='\0') { |
---|
| 831 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 832 | u->nick); |
---|
| 833 | } else { |
---|
| 834 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 835 | u->nick); |
---|
| 836 | } |
---|
| 837 | otrl_sm_state_free(context->smstate); |
---|
| 838 | /* smp is in back in EXPECT1 */ |
---|
| 839 | } |
---|
| 840 | } |
---|
| 841 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP4); |
---|
| 842 | if (tlv) { |
---|
| 843 | if (nextMsg != OTRL_SMP_EXPECT4) { |
---|
| 844 | irc_usermsg(irc, "smp %s: spurious SMP4 received, aborting", u->nick); |
---|
| 845 | otrl_message_abort_smp(us, ops, u->ic, context); |
---|
| 846 | otrl_sm_state_free(context->smstate); |
---|
| 847 | } else { |
---|
| 848 | /* SMP4 received, otrl_message_receiving will have set fp trust */ |
---|
| 849 | const char *trust = context->active_fingerprint->trust; |
---|
| 850 | if(!trust || trust[0]=='\0') { |
---|
| 851 | irc_usermsg(irc, "smp %s: secrets did not match, fingerprint not trusted", |
---|
| 852 | u->nick); |
---|
| 853 | } else { |
---|
| 854 | irc_usermsg(irc, "smp %s: secrets proved equal, fingerprint trusted", |
---|
| 855 | u->nick); |
---|
| 856 | } |
---|
| 857 | otrl_sm_state_free(context->smstate); |
---|
| 858 | /* smp is in back in EXPECT1 */ |
---|
| 859 | } |
---|
| 860 | } |
---|
| 861 | tlv = otrl_tlv_find(tlvs, OTRL_TLV_SMP_ABORT); |
---|
| 862 | if (tlv) { |
---|
| 863 | irc_usermsg(irc, "smp: received abort from %s", u->nick); |
---|
| 864 | otrl_sm_state_free(context->smstate); |
---|
| 865 | /* smp is in back in EXPECT1 */ |
---|
| 866 | } |
---|
| 867 | } |
---|
| 868 | |
---|
| 869 | /* helper to assert that account and protocol names given to ops below always |
---|
| 870 | match the im_connection passed through as opdata */ |
---|
| 871 | struct im_connection *check_imc(void *opdata, const char *accountname, |
---|
| 872 | const char *protocol) |
---|
| 873 | { |
---|
| 874 | struct im_connection *ic = (struct im_connection *)opdata; |
---|
| 875 | |
---|
| 876 | if (strcmp(accountname, ic->acc->user) != 0) { |
---|
| 877 | log_message(LOGLVL_WARNING, |
---|
| 878 | "otr: internal account name mismatch: '%s' vs '%s'", |
---|
| 879 | accountname, ic->acc->user); |
---|
| 880 | } |
---|
| 881 | if (strcmp(protocol, ic->acc->prpl->name) != 0) { |
---|
| 882 | log_message(LOGLVL_WARNING, |
---|
| 883 | "otr: internal protocol name mismatch: '%s' vs '%s'", |
---|
| 884 | protocol, ic->acc->prpl->name); |
---|
| 885 | } |
---|
| 886 | |
---|
| 887 | return ic; |
---|
| 888 | } |
---|
| 889 | |
---|
[5a71d9c] | 890 | user_t *peeruser(irc_t *irc, const char *handle, const char *protocol) |
---|
[764c7d1] | 891 | { |
---|
| 892 | user_t *u; |
---|
| 893 | |
---|
[8521b02] | 894 | log_message(LOGLVL_DEBUG, "peeruser '%s' '%s'", handle, protocol); |
---|
| 895 | |
---|
[764c7d1] | 896 | for(u=irc->users; u; u=u->next) { |
---|
| 897 | struct prpl *prpl; |
---|
| 898 | if(!u->ic || !u->handle) |
---|
[8521b02] | 899 | continue; |
---|
[764c7d1] | 900 | prpl = u->ic->acc->prpl; |
---|
| 901 | if(strcmp(prpl->name, protocol) == 0 |
---|
| 902 | && prpl->handle_cmp(u->handle, handle) == 0) { |
---|
[5a71d9c] | 903 | return u; |
---|
[764c7d1] | 904 | } |
---|
| 905 | } |
---|
| 906 | |
---|
[5a71d9c] | 907 | return NULL; |
---|
| 908 | } |
---|
| 909 | |
---|
[8521b02] | 910 | int hexval(char a) |
---|
| 911 | { |
---|
| 912 | int x=tolower(a); |
---|
| 913 | |
---|
| 914 | if(x>='a' && x<='f') |
---|
| 915 | x = x - 'a' + 10; |
---|
| 916 | else if(x>='0' && x<='9') |
---|
| 917 | x = x - '0'; |
---|
| 918 | else |
---|
| 919 | return -1; |
---|
| 920 | |
---|
| 921 | return x; |
---|
| 922 | } |
---|
| 923 | |
---|
[5a71d9c] | 924 | const char *peernick(irc_t *irc, const char *handle, const char *protocol) |
---|
| 925 | { |
---|
| 926 | static char fallback[512]; |
---|
| 927 | |
---|
| 928 | user_t *u = peeruser(irc, handle, protocol); |
---|
| 929 | if(u) { |
---|
| 930 | return u->nick; |
---|
| 931 | } else { |
---|
| 932 | g_snprintf(fallback, 511, "%s/%s", handle, protocol); |
---|
| 933 | return fallback; |
---|
| 934 | } |
---|
| 935 | } |
---|
| 936 | |
---|
| 937 | int otr_update_modeflags(irc_t *irc, user_t *u) |
---|
| 938 | { |
---|
[52e6e17] | 939 | char *vb = set_getstr(&irc->set, "voice_buddies"); |
---|
| 940 | char *hb = set_getstr(&irc->set, "halfop_buddies"); |
---|
| 941 | char *ob = set_getstr(&irc->set, "op_buddies"); |
---|
| 942 | int encrypted = u->encrypted; |
---|
| 943 | int trusted = u->encrypted > 1; |
---|
| 944 | char flags[7]; |
---|
| 945 | int nflags; |
---|
| 946 | char *p = flags; |
---|
| 947 | int i; |
---|
[5a71d9c] | 948 | |
---|
[52e6e17] | 949 | if(!strcmp(vb, "encrypted")) { |
---|
| 950 | *(p++) = encrypted ? '+' : '-'; |
---|
| 951 | *(p++) = 'v'; |
---|
| 952 | nflags++; |
---|
| 953 | } else if(!strcmp(vb, "trusted")) { |
---|
| 954 | *(p++) = trusted ? '+' : '-'; |
---|
| 955 | *(p++) = 'v'; |
---|
| 956 | nflags++; |
---|
| 957 | } |
---|
| 958 | if(!strcmp(hb, "encrypted")) { |
---|
| 959 | *(p++) = encrypted ? '+' : '-'; |
---|
| 960 | *(p++) = 'h'; |
---|
| 961 | nflags++; |
---|
| 962 | } else if(!strcmp(hb, "trusted")) { |
---|
| 963 | *(p++) = trusted ? '+' : '-'; |
---|
| 964 | *(p++) = 'h'; |
---|
| 965 | nflags++; |
---|
| 966 | } |
---|
| 967 | if(!strcmp(ob, "encrypted")) { |
---|
| 968 | *(p++) = encrypted ? '+' : '-'; |
---|
| 969 | *(p++) = 'o'; |
---|
| 970 | nflags++; |
---|
| 971 | } else if(!strcmp(ob, "trusted")) { |
---|
| 972 | *(p++) = trusted ? '+' : '-'; |
---|
| 973 | *(p++) = 'o'; |
---|
| 974 | nflags++; |
---|
| 975 | } |
---|
| 976 | *p = '\0'; |
---|
[5a71d9c] | 977 | |
---|
[52e6e17] | 978 | p = g_malloc(nflags * (strlen(u->nick)+1) + 1); |
---|
| 979 | *p = '\0'; |
---|
| 980 | if(!p) |
---|
[5a71d9c] | 981 | return 0; |
---|
[52e6e17] | 982 | for(i=0; i<nflags; i++) { |
---|
| 983 | strcat(p, " "); |
---|
| 984 | strcat(p, u->nick); |
---|
[5a71d9c] | 985 | } |
---|
[52e6e17] | 986 | irc_write( irc, ":%s!%s@%s MODE %s %s%s", irc->mynick, irc->mynick, irc->myhost, |
---|
| 987 | irc->channel, flags, p ); |
---|
| 988 | g_free(p); |
---|
[5a71d9c] | 989 | |
---|
| 990 | return 1; |
---|
[764c7d1] | 991 | } |
---|
| 992 | |
---|
| 993 | void show_fingerprints(irc_t *irc, ConnContext *ctx) |
---|
| 994 | { |
---|
| 995 | char human[45]; |
---|
| 996 | Fingerprint *fp; |
---|
| 997 | const char *trust; |
---|
| 998 | int count=0; |
---|
| 999 | |
---|
| 1000 | for(fp=&ctx->fingerprint_root; fp; fp=fp->next) { |
---|
| 1001 | if(!fp->fingerprint) |
---|
| 1002 | continue; |
---|
| 1003 | count++; |
---|
| 1004 | otrl_privkey_hash_to_human(human, fp->fingerprint); |
---|
| 1005 | if(!fp->trust || fp->trust[0] == '\0') { |
---|
| 1006 | trust="untrusted"; |
---|
| 1007 | } else { |
---|
| 1008 | trust=fp->trust; |
---|
| 1009 | } |
---|
| 1010 | if(fp == ctx->active_fingerprint) { |
---|
[8521b02] | 1011 | irc_usermsg(irc, " \x02%s (%s)\x02", human, trust); |
---|
[764c7d1] | 1012 | } else { |
---|
[8521b02] | 1013 | irc_usermsg(irc, " %s (%s)", human, trust); |
---|
[764c7d1] | 1014 | } |
---|
| 1015 | } |
---|
| 1016 | if(count==0) |
---|
[8521b02] | 1017 | irc_usermsg(irc, " no fingerprints"); |
---|
| 1018 | } |
---|
| 1019 | |
---|
| 1020 | void show_general_otr_info(irc_t *irc) |
---|
| 1021 | { |
---|
| 1022 | ConnContext *ctx; |
---|
| 1023 | OtrlPrivKey *key; |
---|
| 1024 | char human[45]; |
---|
| 1025 | |
---|
| 1026 | /* list all privkeys */ |
---|
| 1027 | irc_usermsg(irc, "\x1fprivate keys:\x1f"); |
---|
| 1028 | for(key=irc->otr_us->privkey_root; key; key=key->next) { |
---|
| 1029 | const char *hash; |
---|
| 1030 | |
---|
| 1031 | switch(key->pubkey_type) { |
---|
| 1032 | case OTRL_PUBKEY_TYPE_DSA: |
---|
| 1033 | irc_usermsg(irc, " %s/%s - DSA", key->accountname, key->protocol); |
---|
| 1034 | break; |
---|
| 1035 | default: |
---|
| 1036 | irc_usermsg(irc, " %s/%s - type %d", key->accountname, key->protocol, |
---|
| 1037 | key->pubkey_type); |
---|
| 1038 | } |
---|
| 1039 | |
---|
| 1040 | /* No, it doesn't make much sense to search for the privkey again by |
---|
| 1041 | account/protocol, but libotr currently doesn't provide a direct routine |
---|
| 1042 | for hashing a given 'OtrlPrivKey'... */ |
---|
| 1043 | hash = otrl_privkey_fingerprint(irc->otr_us, human, key->accountname, key->protocol); |
---|
| 1044 | if(hash) /* should always succeed */ |
---|
| 1045 | irc_usermsg(irc, " %s", human); |
---|
| 1046 | } |
---|
| 1047 | |
---|
| 1048 | /* list all contexts */ |
---|
| 1049 | irc_usermsg(irc, "%s", ""); |
---|
| 1050 | irc_usermsg(irc, "\x1f" "connection contexts:\x1f (bold=currently encrypted)"); |
---|
| 1051 | for(ctx=irc->otr_us->context_root; ctx; ctx=ctx->next) {\ |
---|
| 1052 | user_t *u; |
---|
| 1053 | char *userstring; |
---|
| 1054 | |
---|
| 1055 | u = peeruser(irc, ctx->username, ctx->protocol); |
---|
| 1056 | if(u) |
---|
| 1057 | userstring = g_strdup_printf("%s/%s/%s (%s)", |
---|
| 1058 | ctx->username, ctx->protocol, ctx->accountname, u->nick); |
---|
| 1059 | else |
---|
| 1060 | userstring = g_strdup_printf("%s/%s/%s", |
---|
| 1061 | ctx->username, ctx->protocol, ctx->accountname); |
---|
| 1062 | |
---|
| 1063 | if(ctx->msgstate == OTRL_MSGSTATE_ENCRYPTED) { |
---|
| 1064 | otrl_privkey_hash_to_human(human, ctx->active_fingerprint->fingerprint); |
---|
| 1065 | irc_usermsg(irc, " \x02%s\x02", userstring); |
---|
| 1066 | irc_usermsg(irc, " %s", human); |
---|
| 1067 | } else { |
---|
| 1068 | irc_usermsg(irc, " %s", userstring); |
---|
| 1069 | } |
---|
| 1070 | |
---|
| 1071 | g_free(userstring); |
---|
| 1072 | } |
---|
| 1073 | } |
---|
| 1074 | |
---|
| 1075 | void show_otr_context_info(irc_t *irc, ConnContext *ctx) |
---|
| 1076 | { |
---|
| 1077 | switch(ctx->otr_offer) { |
---|
| 1078 | case OFFER_NOT: |
---|
| 1079 | irc_usermsg(irc, " otr offer status: none sent"); |
---|
| 1080 | break; |
---|
| 1081 | case OFFER_SENT: |
---|
| 1082 | irc_usermsg(irc, " otr offer status: awaiting reply"); |
---|
| 1083 | break; |
---|
| 1084 | case OFFER_ACCEPTED: |
---|
| 1085 | irc_usermsg(irc, " otr offer status: accepted our offer"); |
---|
| 1086 | break; |
---|
| 1087 | case OFFER_REJECTED: |
---|
| 1088 | irc_usermsg(irc, " otr offer status: ignored our offer"); |
---|
| 1089 | break; |
---|
| 1090 | default: |
---|
| 1091 | irc_usermsg(irc, " otr offer status: %d", ctx->otr_offer); |
---|
| 1092 | } |
---|
| 1093 | |
---|
| 1094 | switch(ctx->msgstate) { |
---|
| 1095 | case OTRL_MSGSTATE_PLAINTEXT: |
---|
| 1096 | irc_usermsg(irc, " connection state: cleartext"); |
---|
| 1097 | break; |
---|
| 1098 | case OTRL_MSGSTATE_ENCRYPTED: |
---|
| 1099 | irc_usermsg(irc, " connection state: encrypted (v%d)", ctx->protocol_version); |
---|
| 1100 | break; |
---|
| 1101 | case OTRL_MSGSTATE_FINISHED: |
---|
| 1102 | irc_usermsg(irc, " connection state: shut down"); |
---|
| 1103 | break; |
---|
| 1104 | default: |
---|
| 1105 | irc_usermsg(irc, " connection state: %d", ctx->msgstate); |
---|
| 1106 | } |
---|
| 1107 | |
---|
| 1108 | irc_usermsg(irc, " known fingerprints: (bold=active)"); |
---|
| 1109 | show_fingerprints(irc, ctx); |
---|
[764c7d1] | 1110 | } |
---|
| 1111 | |
---|
| 1112 | void otr_keygen(irc_t *irc, const char *handle, const char *protocol) |
---|
| 1113 | { |
---|
| 1114 | GError *err; |
---|
| 1115 | GThread *thr; |
---|
| 1116 | struct kgdata *kg; |
---|
| 1117 | gint ev; |
---|
| 1118 | |
---|
| 1119 | irc_usermsg(irc, "generating new otr privkey for %s/%s...", |
---|
| 1120 | handle, protocol); |
---|
| 1121 | |
---|
| 1122 | kg = g_new0(struct kgdata, 1); |
---|
| 1123 | if(!kg) { |
---|
| 1124 | irc_usermsg(irc, "otr keygen failed: out of memory"); |
---|
| 1125 | return; |
---|
| 1126 | } |
---|
| 1127 | |
---|
| 1128 | /* Assemble the job description to be passed to thread and handler */ |
---|
| 1129 | kg->irc = irc; |
---|
| 1130 | kg->keyfile = g_strdup_printf("%s%s.otr_keys", global.conf->configdir, kg->irc->nick); |
---|
| 1131 | if(!kg->keyfile) { |
---|
| 1132 | irc_usermsg(irc, "otr keygen failed: out of memory"); |
---|
| 1133 | g_free(kg); |
---|
| 1134 | return; |
---|
| 1135 | } |
---|
| 1136 | kg->handle = handle; |
---|
| 1137 | kg->protocol = protocol; |
---|
| 1138 | kg->mutex = g_mutex_new(); |
---|
| 1139 | if(!kg->mutex) { |
---|
| 1140 | irc_usermsg(irc, "otr keygen failed: couldn't create mutex"); |
---|
| 1141 | g_free(kg->keyfile); |
---|
| 1142 | g_free(kg); |
---|
| 1143 | return; |
---|
| 1144 | } |
---|
| 1145 | kg->done = FALSE; |
---|
| 1146 | |
---|
| 1147 | /* Poll for completion of the thread periodically. I would have preferred |
---|
| 1148 | to just wait on a pipe but this way it's portable to Windows. *sigh* |
---|
| 1149 | */ |
---|
| 1150 | ev = b_timeout_add(1000, &keygen_finish_handler, kg); |
---|
| 1151 | if(!ev) { |
---|
| 1152 | irc_usermsg(irc, "otr keygen failed: couldn't register timeout"); |
---|
| 1153 | g_free(kg->keyfile); |
---|
| 1154 | g_mutex_free(kg->mutex); |
---|
| 1155 | g_free(kg); |
---|
| 1156 | return; |
---|
| 1157 | } |
---|
| 1158 | |
---|
| 1159 | thr = g_thread_create(&otr_keygen_thread_func, kg, FALSE, &err); |
---|
| 1160 | if(!thr) { |
---|
| 1161 | irc_usermsg(irc, "otr keygen failed: %s", err->message); |
---|
| 1162 | g_free(kg->keyfile); |
---|
| 1163 | g_mutex_free(kg->mutex); |
---|
| 1164 | g_free(kg); |
---|
| 1165 | b_event_remove(ev); |
---|
| 1166 | } |
---|
| 1167 | } |
---|
| 1168 | |
---|
| 1169 | gpointer otr_keygen_thread_func(gpointer data) |
---|
| 1170 | { |
---|
| 1171 | struct kgdata *kg = (struct kgdata *)data; |
---|
| 1172 | |
---|
| 1173 | /* lock OTR subsystem and do the work */ |
---|
| 1174 | g_mutex_lock(kg->irc->otr_mutex); |
---|
| 1175 | kg->result = otrl_privkey_generate(kg->irc->otr_us, kg->keyfile, kg->handle, |
---|
| 1176 | kg->protocol); |
---|
| 1177 | g_mutex_unlock(kg->irc->otr_mutex); |
---|
| 1178 | /* OTR enabled again */ |
---|
| 1179 | |
---|
| 1180 | /* notify mainloop */ |
---|
| 1181 | g_mutex_lock(kg->mutex); |
---|
| 1182 | kg->done = TRUE; |
---|
| 1183 | g_mutex_unlock(kg->mutex); |
---|
| 1184 | |
---|
| 1185 | return NULL; |
---|
| 1186 | } |
---|
| 1187 | |
---|
| 1188 | gboolean keygen_finish_handler(gpointer data, gint fd, b_input_condition cond) |
---|
| 1189 | { |
---|
| 1190 | struct kgdata *kg = (struct kgdata *)data; |
---|
| 1191 | int done; |
---|
| 1192 | |
---|
| 1193 | g_mutex_lock(kg->mutex); |
---|
| 1194 | done = kg->done; |
---|
| 1195 | g_mutex_unlock(kg->mutex); |
---|
| 1196 | if(kg->done) { |
---|
| 1197 | if(kg->result) { |
---|
[3c80a9d] | 1198 | irc_usermsg(kg->irc, "otr keygen: %s", strerror(kg->result)); |
---|
[764c7d1] | 1199 | } else { |
---|
| 1200 | irc_usermsg(kg->irc, "otr keygen for %s/%s complete", kg->handle, kg->protocol); |
---|
| 1201 | } |
---|
| 1202 | g_free(kg->keyfile); |
---|
| 1203 | g_mutex_free(kg->mutex); |
---|
| 1204 | g_free(kg); |
---|
| 1205 | return FALSE; /* unregister timeout */ |
---|
| 1206 | } |
---|
| 1207 | |
---|
| 1208 | return TRUE; /* still working, continue checking */ |
---|
| 1209 | } |
---|
| 1210 | |
---|
| 1211 | void yes_keygen(gpointer w, void *data) |
---|
| 1212 | { |
---|
| 1213 | account_t *acc = (account_t *)data; |
---|
| 1214 | |
---|
| 1215 | otr_keygen(acc->irc, acc->user, acc->prpl->name); |
---|
| 1216 | } |
---|
| 1217 | |
---|
| 1218 | void no_keygen(gpointer w, void *data) |
---|
| 1219 | { |
---|
| 1220 | account_t *acc = (account_t *)data; |
---|
| 1221 | |
---|
| 1222 | irc_usermsg(acc->irc, "proceeding without key, otr inoperable on %s/%s", |
---|
| 1223 | acc->user, acc->prpl->name); |
---|
[5a71d9c] | 1224 | /* TODO: |
---|
| 1225 | irc_usermsg(acc->irc, "setting otr policy for %s/%s to \"never\"", |
---|
| 1226 | acc->user, acc->prpl->name); |
---|
| 1227 | set_setstr(acc->set, "otr_policy", "never"); |
---|
| 1228 | */ |
---|
[764c7d1] | 1229 | } |
---|
| 1230 | |
---|
| 1231 | |
---|
| 1232 | #else /* WITH_OTR undefined */ |
---|
| 1233 | |
---|
| 1234 | void cmd_otr(irc_t *irc, char **args) |
---|
| 1235 | { |
---|
| 1236 | irc_usermsg(irc, "otr: n/a, compiled without OTR support"); |
---|
| 1237 | } |
---|
| 1238 | |
---|
| 1239 | #endif |
---|