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attempting writing to buffer

master
Alexander Avery 2 years ago
parent
commit
e61c71b269
  1. 34
      popcorn.c

34
popcorn.c

@ -2,6 +2,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
int verify_host(ssh_session session) {
enum ssh_known_hosts_e state;
@ -19,11 +20,13 @@ int verify_host(ssh_session session) {
return 0;
}
int get_movies(ssh_session session) {
int get_movies(ssh_session session, char** buffer, size_t size) {
ssh_channel channel;
int rc;
char read_buffer[256];
int nbytes;
size_t len = 0;
char* temp;
channel = ssh_channel_new(session);
if (channel == NULL)
@ -36,7 +39,7 @@ int get_movies(ssh_session session) {
return rc;
}
rc = ssh_channel_request_exec(channel, "ls -l /");
rc = ssh_channel_request_exec(channel, "find /var/www/public/media -type f -name \"*mp4\"");
if (rc != SSH_OK) {
fprintf(stderr, "Failed to request exec");
ssh_channel_close(channel);
@ -46,12 +49,21 @@ int get_movies(ssh_session session) {
nbytes = ssh_channel_read(channel, read_buffer, sizeof(read_buffer), 0);
while (nbytes > 0) {
if (fwrite(read_buffer, 1, nbytes, stdout) != nbytes) {
fprintf(stderr, "Failed to write to stdout");
ssh_channel_close(channel);
ssh_channel_free(channel);
return SSH_ERROR;
}
fprintf(stderr, "size: %li\tlen: %li\tnbytes: %d\n", size, len, nbytes);
if ((len+=nbytes) > size) {
fprintf(stderr, "new len: %li\n", len);
char* temp = realloc(*buffer, len);
size = len;
if (!temp) {
fprintf(stderr, "Failed to reallocate char buffer");
ssh_channel_close(channel);
ssh_channel_free(channel);
return -1;
}
*buffer = temp;
}
*buffer = strcat(*buffer, read_buffer);
nbytes = ssh_channel_read(channel, read_buffer, sizeof(read_buffer), 0);
@ -114,11 +126,15 @@ int main(int argc, char *argv[]) {
exit(-1);
}
if (get_movies(session) != SSH_OK) {
int size = 16;
char* b = malloc(size);
memset(b, 0, size);
if (get_movies(session, &b, size) != SSH_OK) {
fprintf(stderr, "Unable to list movies: %s\n", ssh_get_error(session));
exit(-1);
}
fprintf(stdout, "%s", b);
ssh_disconnect(session);
ssh_free(session);

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