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debug output

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This commit is contained in:
Ruslan Kuchumov 2014-07-15 12:20:19 +00:00
parent 9efcba5c02
commit 9beee068ce
1 changed files with 92 additions and 7 deletions
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99
src/networking.c
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@ -3,6 +3,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
@ -14,6 +15,8 @@
#include <sys/ioctl.h>
#define DEBUG_OUT 0
#define INT_LEN 10
#define PASSW 10
@ -62,6 +65,10 @@ ssize_t writen(int fd, const void *vptr, size_t n);
ssize_t write_byte(int fd, char status);
ssize_t read_byte(int fd, char *status);
#if DEBUG_OUT
void pr_command(char c);
#endif
void connect_to_srv(const char *addr, const char *port)
{
if (NULL == addr)
@ -153,7 +160,14 @@ void net_send_cc()
buf_end = buf;
char ok;
read_byte(srv_sd, &ok);
if (read_byte(srv_sd, &ok) != 1)
return;
#if DEBUG_OUT
fprintf(stderr, "[S] ");
pr_command(ok);
fprintf(stderr, "\n");
#endif
if (SERV_ERROR == ok)
{
@ -189,6 +203,10 @@ ssize_t write_block(int fd, char command, const char *buf, size_t buf_len)
assert(buf != NULL);
assert(buf_len > 0);
#if DEBUG_OUT
fprintf(stderr, "[C] ");
#endif
int rc;
ssize_t nwritten = 0;
@ -198,32 +216,55 @@ ssize_t write_block(int fd, char command, const char *buf, size_t buf_len)
return 0;
nwritten++;
#if DEBUG_OUT
pr_command(command);
fprintf(stderr, " ");
#endif
char len_str[INT_LEN] = {0};
snprintf(len_str, INT_LEN, "%d", buf_len);
snprintf(len_str, INT_LEN, "%zd", buf_len);
if ((rc = writen(fd, len_str, INT_LEN)) < 0)
return -1;
else if (rc != INT_LEN)
return 0;
nwritten += rc;
#if DEBUG_OUT
fwrite(len_str, sizeof(char), INT_LEN, stderr);
fprintf(stderr, " ");
#endif
if ((rc = writen(fd, buf, buf_len)) < 0)
return -1;
else if (rc != buf_len)
else if (rc != (int) buf_len)
return 0;
nwritten += rc;
#if DEBUG_OUT
fwrite(buf, sizeof(char), buf_len - 2, stderr);
fprintf(stderr, " ");
#endif
if ((rc = write_byte(fd, '\r')) < 0)
return -1;
else if (rc != 1)
return 0;
nwritten++;
#if DEBUG_OUT
fprintf(stderr, "\\r");
#endif
if ((rc = write_byte(fd, '\n')) < 0)
return -1;
else if (rc != 1)
return 0;
nwritten++;
#if DEBUG_OUT
fprintf(stderr, "\\n\n");
#endif
return nwritten;
}
@ -283,8 +324,6 @@ int ask_passwd(int sd)
struct termios old, new;
int rc;
size_t len = 0;
char len_str[INT_LEN] = {0};
int i;
char *pw = NULL;
char ok;
@ -296,6 +335,12 @@ int ask_passwd(int sd)
fatal(EXIT_FAILURE, "read() error: %s", strerror(errno));
}
#if DEBUG_OUT
fprintf(stderr, "[S] ");
pr_command(ok);
fprintf(stderr, "\n");
#endif
if (OK == ok)
{
return 1;
@ -345,6 +390,12 @@ int ask_passwd(int sd)
if (read_byte(sd, &ok) != 1)
return -1;
#if DEBUG_OUT
fprintf(stderr, "[S] ");
pr_command(ok);
fprintf(stderr, "\n");
#endif
if (WRONG_PASSW == ok)
{
printf("Wrong password\n");
@ -360,10 +411,44 @@ int ask_passwd(int sd)
return 1;
}
#if DEBUG_OUT
void pr_command(char c)
{
switch(c)
{
case CC:
fprintf(stderr, "CC");
break;
case OK:
fprintf(stderr, "OK");
break;
case WRONG_PASSW:
fprintf(stderr, "WRONG_PASSW");
break;
case WRONG_COMMAND:
fprintf(stderr, "WRONG_COMMAND");
break;
case SERV_ERROR:
fprintf(stderr, "SERV_ERROR");
break;
case NEW_PRG:
fprintf(stderr, "NEW_PRG");
break;
case MAX_CONN:
fprintf(stderr, "MAX_CONN");
break;
case PASSW:
fprintf(stderr, "PASSW");
break;
default:
fprintf(stderr, "UNKNOWN (%d)", (int) c);
break;
}
}
#endif
ssize_t readn(int fd, void *vptr, size_t n)
{
assert(n >= 0);
size_t nleft;
ssize_t nread;
char *ptr;