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address scp's sftp mode buf len limitations

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This commit is contained in:
Tess Gauthier 2023-02-07 16:39:53 -05:00
parent 9231e35bcc
commit 6c431e889c
1 changed files with 16 additions and 1 deletions
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17
scp.c
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@ -184,7 +184,12 @@ pid_t do_cmd_pid = -1;
pid_t do_cmd_pid2 = -1;
/* SFTP copy parameters */
#ifdef WINDOWS
// match DEFAULT_COPY_BUFLEN from sftp-client.c unless overriden below with -X input
size_t sftp_copy_buflen = 32768;
#else
size_t sftp_copy_buflen;
#endif // WINDOWS
size_t sftp_nrequests;
/* Needed for sftp */
@ -770,6 +775,16 @@ main(int argc, char **argv)
optarg + 7, strerror(errno));
}
sftp_copy_buflen = (size_t)llv;
#ifdef WINDOWS
size_t max_sftp_buf_len = 204800;
if (sftp_copy_buflen > max_sftp_buf_len) {
if (verbose_mode)
fmprintf(stderr,
"Buffer value of %d is too large for Win32-OpenSSH. Setting buffer to %d\n",
sftp_copy_buflen, max_sftp_buf_len);
sftp_copy_buflen = max_sftp_buf_len;
}
#endif // WINDOWS
} else if (strncmp(optarg, "nrequests=", 10) == 0) {
llv = strtonum(optarg + 10, 1, 256 * 1024,
&errstr);
@ -1199,7 +1214,7 @@ do_sftp_connect(char *host, char *user, int port, char *sftp_direct,
get_zone_identifier(host);
#endif // WINDOWS
return do_init(*reminp, *remoutp,
sftp_copy_buflen, sftp_nrequests, limit_kbps);
sftp_copy_buflen, sftp_nrequests, limit_kbps);
}
void