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** Default SSH command
*/
#ifdef __MINGW32__
static char zDefaultSshCmd[] = "ssh -T";
#else
static char zDefaultSshCmd[] = "ssh -e none -T";
#endif
/*
** Bring up an SSH link. This involves sending some "echo" commands and
** get back appropriate responses. The point is to move past the MOTD and
** verify that the link is working.
*/
static void transport_ssh_startup(void){
char *zIn; /* An input line received back from remote */
int nWait; /* Number of times waiting for the MOTD */
unsigned iRandom; /* Random probe value */
char zProbe[30]; /* Text of the random probe */
int nProbe; /* Size of probe message */
int nIn; /* Size of input */
static const int nBuf = 10000; /* Size of input buffer */
zIn = fossil_malloc(nBuf);
sqlite3_randomness(sizeof(iRandom), &iRandom);
sqlite3_snprintf(sizeof(zProbe), zProbe, "probe-%08x", iRandom);
nProbe = (int)strlen(zProbe);
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** Default SSH command
*/
#ifdef __MINGW32__
static char zDefaultSshCmd[] = "ssh -T";
#else
static char zDefaultSshCmd[] = "ssh -e none -T";
#endif
/*
** Generate a random SSH link problem keyword
*/
static int random_probe(char *zProbe, int nProbe){
unsigned r[4];
sqlite3_randomness(sizeof(r), r);
sqlite3_snprintf(nProbe, zProbe, "probe-%08x%08x%08x%08x",
r[0], r[1], r[2], r[3]);
return (int)strlen(zProbe);
}
/*
** Bring up an SSH link. This involves sending some "echo" commands and
** get back appropriate responses. The point is to move past the MOTD and
** verify that the link is working.
*/
static void transport_ssh_startup(void){
char *zIn; /* An input line received back from remote */
int nWait; /* Number of times waiting for the MOTD */
char zProbe[40]; /* Text of the random probe */
int nProbe; /* Size of probe message */
int nIn; /* Size of input */
static const int nBuf = 10000; /* Size of input buffer */
zIn = fossil_malloc(nBuf);
nProbe = random_probe(zProbe, sizeof(zProbe));
fprintf(sshOut, "echo %s\n", zProbe);
fflush(sshOut);
if( g.fSshTrace ){
printf("Sent: [echo %s]\n", zProbe);
fflush(stdout);
}
memset(zIn, '*', nProbe);
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nIn = (int)strlen(zIn);
memcpy(zIn, zIn+(nIn-nProbe), nProbe);
if( g.fSshTrace ){
printf("Fetching more text. Looking for [%s]...\n", zProbe);
fflush(stdout);
}
}
sqlite3_randomness(sizeof(iRandom), &iRandom);
sqlite3_snprintf(sizeof(zProbe), zProbe, "probe-%08x", iRandom);
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nIn = (int)strlen(zIn);
memcpy(zIn, zIn+(nIn-nProbe), nProbe);
if( g.fSshTrace ){
printf("Fetching more text. Looking for [%s]...\n", zProbe);
fflush(stdout);
}
}
nProbe = random_probe(zProbe, sizeof(zProbe));
fprintf(sshOut, "echo %s\n", zProbe);
fflush(sshOut);
if( g.fSshTrace ){
printf("Sent: [echo %s]\n", zProbe);
fflush(stdout);
}
sshin_read(zIn, nBuf);
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