int faimtest_authsvrready(struct aim_session_t *, struct command_rx_struct *command, ...);
int faimtest_pwdchngdone(struct aim_session_t *, struct command_rx_struct *command, ...);
int faimtest_serverready(struct aim_session_t *, struct command_rx_struct *command, ...);
+int faimtest_hostversions(struct aim_session_t *sess, struct command_rx_struct *command, ...);
int faimtest_parse_misses(struct aim_session_t *, struct command_rx_struct *command, ...);
int faimtest_parse_msgack(struct aim_session_t *, struct command_rx_struct *command, ...);
int faimtest_parse_motd(struct aim_session_t *, struct command_rx_struct *command, ...);
static int msgerrreasonslen = 25;
static char *screenname,*password,*server=NULL;
+static int connected = 0;
int faimtest_reportinterval(struct aim_session_t *sess, struct command_rx_struct *command, ...)
{
switch(command->conn->type) {
case AIM_CONN_TYPE_BOS: {
/* this is the new buddy list */
- char buddies[] = "Buddy1&Buddy2&ThisHereIsAName2&";
+ char buddies[] = "Buddy1&Buddy2&ThisHereIsAName2&midendian&ewarmenhoven&";
/* this is the new profile */
char profile[] = "Hello";
return 1;
}
+int faimtest_hostversions(struct aim_session_t *sess, struct command_rx_struct *command, ...)
+{
+ int vercount, i;
+ unsigned char *versions;
+ va_list ap;
+
+ va_start(ap, command);
+ vercount = va_arg(ap, int); /* number of family/version pairs */
+ versions = va_arg(ap, unsigned char *);
+ va_end(ap);
+
+ printf("faimtest: SNAC versions supported by this host: ");
+ for (i = 0; i < vercount*4; i += 4)
+ printf("0x%04x:0x%04x ",
+ aimutil_get16(versions+i), /* SNAC family */
+ aimutil_get16(versions+i+2) /* Version number */);
+ printf("\n");
+
+ return 1;
+}
+
int faimtest_serverready(struct aim_session_t *sess, struct command_rx_struct *command, ...)
{
- switch (command->conn->type)
- {
- case AIM_CONN_TYPE_BOS:
+ int famcount, i;
+ unsigned short *families;
+ va_list ap;
- aim_setversions(sess, command->conn);
- aim_bos_reqrate(sess, command->conn); /* request rate info */
+ va_start(ap, command);
+ famcount = va_arg(ap, int);
+ families = va_arg(ap, unsigned short *);
+ va_end(ap);
- fprintf(stderr, "faimtest: done with BOS ServerReady\n");
- break;
+ printf("faimtest: SNAC families supported by this host (type %d): ", command->conn->type);
+ for (i = 0; i < famcount; i++)
+ printf("0x%04x ", families[i]);
+ printf("\n");
- case AIM_CONN_TYPE_CHATNAV:
- fprintf(stderr, "faimtest: chatnav: got server ready\n");
- aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CTN, AIM_CB_CTN_INFO, faimtest_chatnav_info, 0);
- aim_bos_reqrate(sess, command->conn);
- aim_bos_ackrateresp(sess, command->conn);
- aim_chatnav_clientready(sess, command->conn);
- aim_chatnav_reqrights(sess, command->conn);
+ switch (command->conn->type) {
+ case AIM_CONN_TYPE_BOS:
- break;
- case AIM_CONN_TYPE_CHAT:
- aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_USERJOIN, faimtest_chat_join, 0);
- aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_USERLEAVE, faimtest_chat_leave, 0);
- aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_ROOMINFOUPDATE, faimtest_chat_infoupdate, 0);
- aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_INCOMINGMSG, faimtest_chat_incomingmsg, 0);
- aim_bos_reqrate(sess, command->conn);
- aim_bos_ackrateresp(sess, command->conn);
- aim_chat_clientready(sess, command->conn);
- break;
+ aim_setversions(sess, command->conn);
+ aim_bos_reqrate(sess, command->conn); /* request rate info */
- case AIM_CONN_TYPE_RENDEZVOUS: /* empty */
- break;
+ fprintf(stderr, "faimtest: done with BOS ServerReady\n");
+ break;
+
+ case AIM_CONN_TYPE_CHATNAV:
+ fprintf(stderr, "faimtest: chatnav: got server ready\n");
+ aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CTN, AIM_CB_CTN_INFO, faimtest_chatnav_info, 0);
+ aim_bos_reqrate(sess, command->conn);
+ aim_bos_ackrateresp(sess, command->conn);
+ aim_chatnav_clientready(sess, command->conn);
+ aim_chatnav_reqrights(sess, command->conn);
+
+ break;
+
+ case AIM_CONN_TYPE_CHAT:
+ aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_USERJOIN, faimtest_chat_join, 0);
+ aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_USERLEAVE, faimtest_chat_leave, 0);
+ aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_ROOMINFOUPDATE, faimtest_chat_infoupdate, 0);
+ aim_conn_addhandler(sess, command->conn, AIM_CB_FAM_CHT, AIM_CB_CHT_INCOMINGMSG, faimtest_chat_incomingmsg, 0);
+ aim_bos_reqrate(sess, command->conn);
+ aim_bos_ackrateresp(sess, command->conn);
+ aim_chat_clientready(sess, command->conn);
+ break;
+
+ case AIM_CONN_TYPE_RENDEZVOUS: /* empty */
+ break;
+
+ default:
+ fprintf(stderr, "faimtest: unknown connection type on Server Ready\n");
+ }
- default:
- fprintf(stderr, "faimtest: unknown connection type on Server Ready\n");
- }
return 1;
}
if ( (tstconn==NULL) || (tstconn->status & AIM_CONN_STATUS_RESOLVERR) )
fprintf(stderr, "faimtest: unable to reconnect with authorizer\n");
else {
+ aim_conn_addhandler(sess, tstconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_FLAPVER, faimtest_flapversion, 0);
aim_conn_addhandler(sess, tstconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNCOMPLETE, faimtest_conncomplete, 0);
/* Send the cookie to the Auth */
aim_auth_sendcookie(sess, tstconn, cookie);
case 0x000e: /* Chat */
{
char *roomname = NULL;
+ int exchange;
struct aim_conn_t *tstconn = NULL;
roomname = va_arg(ap, char *);
+ exchange = va_arg(ap, int);
tstconn = aim_newconn(sess, AIM_CONN_TYPE_CHAT, ip);
if ( (tstconn==NULL) || (tstconn->status & AIM_CONN_STATUS_RESOLVERR))
if (tstconn) aim_conn_kill(sess, &tstconn);
return 1;
}
- printf("faimtest: chat: connected\n");
+ printf("faimtest: chat: connected to %s on exchange %d\n", roomname, exchange);
/*
* We must do this to attach the stored name to the connection!
int faimtest_parse_authresp(struct aim_session_t *sess, struct command_rx_struct *command, ...)
{
+ va_list ap;
struct aim_conn_t *bosconn = NULL;
-
+ char *sn = NULL, *bosip = NULL, *errurl = NULL, *email = NULL;
+ unsigned char *cookie = NULL;
+ int errorcode = 0, regstatus = 0;
+ int latestbuild = 0, latestbetabuild = 0;
+ char *latestrelease = NULL, *latestbeta = NULL;
+ char *latestreleaseurl = NULL, *latestbetaurl = NULL;
+ char *latestreleaseinfo = NULL, *latestbetainfo = NULL;
+
+ va_start(ap, command);
+ sn = va_arg(ap, char *);
+ errorcode = va_arg(ap, int);
+ errurl = va_arg(ap, char *);
+ regstatus = va_arg(ap, int);
+ email = va_arg(ap, char *);
+ bosip = va_arg(ap, char *);
+ cookie = va_arg(ap, unsigned char *);
+
+ latestrelease = va_arg(ap, char *);
+ latestbuild = va_arg(ap, int);
+ latestreleaseurl = va_arg(ap, char *);
+ latestreleaseinfo = va_arg(ap, char *);
+
+ latestbeta = va_arg(ap, char *);
+ latestbetabuild = va_arg(ap, int);
+ latestbetaurl = va_arg(ap, char *);
+ latestbetainfo = va_arg(ap, char *);
+
+ va_end(ap);
- printf("Screen name: %s\n", sess->logininfo.screen_name);
+ printf("Screen name: %s\n", sn);
/*
* Check for error.
*/
- if (sess->logininfo.errorcode)
- {
- printf("Login Error Code 0x%04x\n", sess->logininfo.errorcode);
- printf("Error URL: %s\n", sess->logininfo.errorurl);
- aim_conn_kill(sess, &command->conn);
- exit(0); /* XXX: should return in order to let the above things get free()'d. */
- }
+ if (errorcode || !bosip || !cookie) {
+ printf("Login Error Code 0x%04x\n", errorcode);
+ printf("Error URL: %s\n", errurl);
+ aim_conn_kill(sess, &command->conn);
+ return 1;
+ }
+
+ printf("Reg status: %2d\n", regstatus);
+ printf("Email: %s\n", email);
+ printf("BOS IP: %s\n", bosip);
- printf("Reg status: %2d\n", sess->logininfo.regstatus);
- printf("Email: %s\n", sess->logininfo.email);
- printf("BOS IP: %s\n", sess->logininfo.BOSIP);
+ if (latestbeta)
+ printf("Latest beta version: %s, build %d, at %s (more info at %s)\n", latestbeta, latestbetabuild, latestbetaurl, latestbetainfo);
+
+ if (latestrelease)
+ printf("Latest released version: %s, build %d, at %s (more info at %s)\n", latestrelease, latestbuild, latestreleaseurl, latestreleaseinfo);
printf("Closing auth connection...\n");
aim_conn_kill(sess, &command->conn);
- bosconn = aim_newconn(sess, AIM_CONN_TYPE_BOS, sess->logininfo.BOSIP);
- if (bosconn == NULL) {
+ if (!(bosconn = aim_newconn(sess, AIM_CONN_TYPE_BOS, bosip))) {
fprintf(stderr, "faimtest: could not connect to BOS: internal error\n");
+ return 1;
} else if (bosconn->status & AIM_CONN_STATUS_CONNERR) {
fprintf(stderr, "faimtest: could not connect to BOS\n");
aim_conn_kill(sess, &bosconn);
- } else {
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNCOMPLETE, faimtest_conncomplete, 0);
- aim_conn_addhandler(sess, bosconn, 0x0009, 0x0003, faimtest_bosrights, 0);
- aim_conn_addhandler(sess, bosconn, 0x0001, 0x0007, faimtest_rateresp, 0); /* rate info */
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_ACK, AIM_CB_ACK_ACK, NULL, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_SERVERREADY, faimtest_serverready, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_RATEINFO, NULL, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_REDIRECT, faimtest_handleredirect, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_STS, AIM_CB_STS_SETREPORTINTERVAL, faimtest_reportinterval, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_RIGHTSINFO, faimtest_parse_buddyrights, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_ONCOMING, faimtest_parse_oncoming, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_OFFGOING, faimtest_parse_offgoing, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_INCOMING, faimtest_parse_incoming_im, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_LOC, AIM_CB_LOC_ERROR, faimtest_parse_locerr, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_MISSEDCALL, faimtest_parse_misses, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_RATECHANGE, faimtest_parse_ratechange, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_EVIL, faimtest_parse_evilnotify, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_ERROR, faimtest_parse_msgerr, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_LOC, AIM_CB_LOC_USERINFO, faimtest_parse_userinfo, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_ACK, faimtest_parse_msgack, 0);
-
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_CTN, AIM_CB_CTN_DEFAULT, aim_parse_unknown, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_DEFAULT, aim_parse_unknown, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_MOTD, faimtest_parse_motd, 0);
+ return 1;
+ }
+
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNCOMPLETE, faimtest_conncomplete, 0);
+ aim_conn_addhandler(sess, bosconn, 0x0009, 0x0003, faimtest_bosrights, 0);
+ aim_conn_addhandler(sess, bosconn, 0x0001, 0x0007, faimtest_rateresp, 0); /* rate info */
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_ACK, AIM_CB_ACK_ACK, NULL, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, 0x0018, faimtest_hostversions, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_SERVERREADY, faimtest_serverready, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_RATEINFO, NULL, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_REDIRECT, faimtest_handleredirect, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_STS, AIM_CB_STS_SETREPORTINTERVAL, faimtest_reportinterval, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_RIGHTSINFO, faimtest_parse_buddyrights, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_ONCOMING, faimtest_parse_oncoming, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_BUD, AIM_CB_BUD_OFFGOING, faimtest_parse_offgoing, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_INCOMING, faimtest_parse_incoming_im, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_LOC, AIM_CB_LOC_ERROR, faimtest_parse_locerr, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_MISSEDCALL, faimtest_parse_misses, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_RATECHANGE, faimtest_parse_ratechange, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_EVIL, faimtest_parse_evilnotify, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_ERROR, faimtest_parse_msgerr, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_LOC, AIM_CB_LOC_USERINFO, faimtest_parse_userinfo, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_MSG, AIM_CB_MSG_ACK, faimtest_parse_msgack, 0);
+
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_CTN, AIM_CB_CTN_DEFAULT, aim_parse_unknown, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_DEFAULT, aim_parse_unknown, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_GEN, AIM_CB_GEN_MOTD, faimtest_parse_motd, 0);
- aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNERR, faimtest_parse_connerr, 0);
+ aim_conn_addhandler(sess, bosconn, AIM_CB_FAM_SPECIAL, AIM_CB_SPECIAL_CONNERR, faimtest_parse_connerr, 0);
- aim_auth_sendcookie(sess, bosconn, sess->logininfo.cookie);
- }
+ aim_auth_sendcookie(sess, bosconn, cookie);
+
return 1;
}
} else if (!strncmp(tmpstr, "open directim", 13)) {
struct aim_conn_t *newconn;
newconn = aim_directim_initiate(sess, command->conn, NULL, userinfo->sn);
+ } else if (!strncmp(tmpstr, "openauth", 8)) {
+ aim_bos_reqservice(sess, command->conn, AIM_CONN_TYPE_AUTH);
+ } else if (!strncmp(tmpstr, "auth", 4)) {
+ aim_genericreq_n(sess, aim_getconn_type(sess, AIM_CONN_TYPE_AUTH), 0x0007, 0x0002);
} else if (!strncmp(tmpstr, "reqsendmsg", 10)) {
aim_send_im(sess, command->conn, "vaxherder", 0, "sendmsg 7900");
} else if (!strncmp(tmpstr, "sendmsg", 7)) {
userinfo = va_arg(ap, struct aim_userinfo_s *);
va_end(ap);
- printf("\n%s is now online (flags: %04x = %s%s%s%s%s%s%s%s) (caps = 0x%04x)\n",
+ printf("%ld %s is now online (flags: %04x = %s%s%s%s%s%s%s%s) (caps = 0x%04x)\n",
+ time(NULL),
userinfo->sn, userinfo->flags,
(userinfo->flags&AIM_FLAG_UNCONFIRMED)?" UNCONFIRMED":"",
(userinfo->flags&AIM_FLAG_ADMINISTRATOR)?" ADMINISTRATOR":"",
printf("faimtest: motd: %s (%d / %s)\n", msg, id,
(id < codeslen)?codes[id]:"unknown");
+ if (!connected)
+ connected++;
+
return 1;
}
/*
* Do an echo for testing purposes. But not for ourselves ("oops!")
*/
- if (strcmp(userinfo->sn, sess->logininfo.screen_name) != 0)
+ if (strcmp(userinfo->sn, sess->sn) != 0)
{
sprintf(tmpbuf, "(%s said \"%s\")", userinfo->sn, msg);
aim_chat_send_im(sess, command->conn, tmpbuf);
break;
case 0x0008: {
char *fqcn, *name, *ck;
- unsigned short instance, flags, maxmsglen, maxoccupancy, unknown;
+ unsigned short instance, flags, maxmsglen, maxoccupancy, unknown, exchange;
unsigned char createperms;
unsigned long createtime;
fqcn = va_arg(ap, char *);
instance = va_arg(ap, int);
+ exchange = va_arg(ap, int);
flags = va_arg(ap, int);
createtime = va_arg(ap, unsigned long);
maxmsglen = va_arg(ap, int);
ck = va_arg(ap, char *);
va_end(ap);
- printf("faimtest: recieved room create reply for %s\n", fqcn);
+ printf("faimtest: recieved room create reply for %s/0x%04x\n", fqcn, exchange);
}
break;
default:
int faimtest_parse_ratechange(struct aim_session_t *sess, struct command_rx_struct *command, ...)
{
+ static char *codes[5] = {"invalid",
+ "change",
+ "warning",
+ "limit",
+ "limit cleared"};
va_list ap;
- unsigned long newrate;
-
+ int code;
+ unsigned long parmid, windowsize, clear, alert, limit, disconnect;
+ unsigned long currentavg, maxavg;
+
va_start(ap, command);
- newrate = va_arg(ap, unsigned long);
+
+ /* See code explanations below */
+ code = va_arg(ap, int);
+
+ /*
+ * Known parameter ID's...
+ * 0x0003 BOS (normal ICBMs, userinfo requests, etc)
+ * 0x0005 Chat messages
+ */
+ parmid = va_arg(ap, unsigned long);
+
+ /*
+ * Not sure what this is exactly. I think its the temporal
+ * relation factor (ie, how to make the rest of the numbers
+ * make sense in the real world).
+ */
+ windowsize = va_arg(ap, unsigned long);
+
+ /* Explained below */
+ clear = va_arg(ap, unsigned long);
+ alert = va_arg(ap, unsigned long);
+ limit = va_arg(ap, unsigned long);
+ disconnect = va_arg(ap, unsigned long);
+ currentavg = va_arg(ap, unsigned long);
+ maxavg = va_arg(ap, unsigned long);
+
va_end(ap);
- printf("faimtest: ratechange: %lu\n", newrate);
+
+ printf("faimtest: rate %s (paramid 0x%04lx): curavg = %ld, maxavg = %ld, alert at %ld, clear warning at %ld, limit at %ld, disconnect at %ld (window size = %ld)\n",
+ (code < 5)?codes[code]:"invalid",
+ parmid,
+ currentavg, maxavg,
+ alert, clear,
+ limit, disconnect,
+ windowsize);
+
+ if (code == AIM_RATE_CODE_CHANGE) {
+ /*
+ * Not real sure when these get sent.
+ */
+ if (currentavg >= clear)
+ aim_conn_setlatency(command->conn, 0);
+
+ } else if (code == AIM_RATE_CODE_WARNING) {
+ /*
+ * We start getting WARNINGs the first time we go below the 'alert'
+ * limit (currentavg < alert) and they stop when either we pause
+ * long enough for currentavg to go above 'clear', or until we
+ * flood it bad enough to go below 'limit' (and start getting
+ * LIMITs instead) or even further and go below 'disconnect' and
+ * get disconnected completely (and won't be able to login right
+ * away either).
+ */
+ aim_conn_setlatency(command->conn, windowsize/4); /* XXX this is bogus! */
+
+ } else if (code == AIM_RATE_CODE_LIMIT) {
+ /*
+ * When we hit LIMIT, messages will start getting dropped.
+ */
+ aim_conn_setlatency(command->conn, windowsize/2); /* XXX this is bogus! */
+
+ } else if (code == AIM_RATE_CODE_CLEARLIMIT) {
+ /*
+ * The limit is cleared when curavg goes above 'clear'.
+ */
+ aim_conn_setlatency(command->conn, 0);
+ }
return 1;
}
andersk / libfaim.git / blobdiff