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Files
libssh/examples/senddata.c
Jakub Jelen 697650caa9 CVE-2025-4878 Initialize pointers where possible
This is mostly mechanical change initializing all the pointers I was able to
find with some grep and manual review of sources and examples.

Used the following greps (which yield some false positives though):

    git grep "    \w* *\* *\w*;$"
    git grep " ssh_session \w*;"
    git grep " ssh_channel \w*;"
    git grep " struct ssh_iterator \*\w*;"
    git grep " ssh_bind \w*;"
    git grep " ssh_key \w*;"
    git grep " ssh_string \w*;"
    git grep " ssh_buffer \w*;"
    git grep " HMACCTX \w*;"
    git grep " SHACTX \w*;"
    grep -rinP '^(?!.*=)\s*(?:\w+\s+)*\w+\s*\*\s*\w+\s*;'

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2025-06-24 09:27:52 +02:00

65 lines
1.2 KiB
C

#include <stdio.h>
#include <libssh/libssh.h>
#include "examples_common.h"
#define LIMIT 0x100000000UL
int main(void) {
ssh_session session = NULL;
ssh_channel channel;
char buffer[1024*1024];
int rc;
uint64_t total=0;
uint64_t lastshown=4096;
session = connect_ssh("localhost", NULL, 0);
if (session == NULL) {
return 1;
}
channel = ssh_channel_new(session);
if (channel == NULL) {
ssh_disconnect(session);
return 1;
}
rc = ssh_channel_open_session(channel);
if (rc < 0) {
ssh_channel_close(channel);
ssh_disconnect(session);
return 1;
}
rc = ssh_channel_request_exec(channel, "cat > /dev/null");
if (rc < 0) {
ssh_channel_close(channel);
ssh_disconnect(session);
return 1;
}
while ((rc = ssh_channel_write(channel, buffer, sizeof(buffer))) > 0) {
total += rc;
if(total/2 >= lastshown){
printf("written %llx\n", (long long unsigned int) total);
lastshown=total;
}
if(total > LIMIT)
break;
}
if (rc < 0) {
printf("error : %s\n",ssh_get_error(session));
ssh_channel_close(channel);
ssh_disconnect(session);
return 1;
}
ssh_channel_send_eof(channel);
ssh_channel_close(channel);
ssh_disconnect(session);
return 0;
}