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message about truncated banner

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This commit is contained in:
Matt Johnston 2016-05-04 15:28:33 +02:00
parent 32a28d0d9c
commit 1152e47b52
1 changed files with 18 additions and 14 deletions
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16
cli-auth.c
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@ -78,6 +78,7 @@ void recv_msg_userauth_banner() {
char* banner = NULL; char* banner = NULL;
unsigned int bannerlen; unsigned int bannerlen;
unsigned int i, linecount; unsigned int i, linecount;
int truncated = 0;
TRACE(("enter recv_msg_userauth_banner")) TRACE(("enter recv_msg_userauth_banner"))
if (ses.authstate.authdone) { if (ses.authstate.authdone) {
@ -90,26 +91,29 @@ void recv_msg_userauth_banner() {
if (bannerlen > MAX_BANNER_SIZE) { if (bannerlen > MAX_BANNER_SIZE) {
TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen)) TRACE(("recv_msg_userauth_banner: bannerlen too long: %d", bannerlen))
goto out; truncated = 1;
} } else {
cleantext(banner); cleantext(banner);
/* Limit to 25 lines */ /* Limit to 24 lines */
linecount = 1; linecount = 1;
for (i = 0; i < bannerlen; i++) { for (i = 0; i < bannerlen; i++) {
if (banner[i] == '\n') { if (banner[i] == '\n') {
if (linecount >= MAX_BANNER_LINES) { if (linecount >= MAX_BANNER_LINES) {
banner[i] = '\0'; banner[i] = '\0';
truncated = 1;
break; break;
} }
linecount++; linecount++;
} }
} }
fprintf(stderr, "%s\n", banner); fprintf(stderr, "%s\n", banner);
}
if (truncated) {
fprintf(stderr, "[Banner from the server is too long]\n");
}
out:
m_free(banner); m_free(banner);
TRACE(("leave recv_msg_userauth_banner")) TRACE(("leave recv_msg_userauth_banner"))
} }