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/*
functions taken from samba4 for quick prototyping of ctdb. These are
not intended to remain part of ctdb
*/
#include "includes.h"
#include "system/filesys.h"
static char *fd_load(int fd, size_t *size, TALLOC_CTX *mem_ctx)
{
struct stat sbuf;
char *p;
if (fstat(fd, &sbuf) != 0) return NULL;
p = (char *)talloc_size(mem_ctx, sbuf.st_size+1);
if (!p) return NULL;
if (read(fd, p, sbuf.st_size) != sbuf.st_size) {
talloc_free(p);
return NULL;
}
p[sbuf.st_size] = 0;
if (size) *size = sbuf.st_size;
return p;
}
static char *file_load(const char *fname, size_t *size, TALLOC_CTX *mem_ctx)
{
int fd;
char *p;
if (!fname || !*fname) return NULL;
fd = open(fname,O_RDONLY);
if (fd == -1) return NULL;
p = fd_load(fd, size, mem_ctx);
close(fd);
return p;
}
/**
parse a buffer into lines
'p' will be freed on error, and otherwise will be made a child of the returned array
**/
static char **file_lines_parse(char *p, size_t size, int *numlines, TALLOC_CTX *mem_ctx)
{
int i;
char *s, **ret;
if (!p) return NULL;
for (s = p, i=0; s < p+size; s++) {
if (s[0] == '\n') i++;
}
ret = talloc_array(mem_ctx, char *, i+2);
if (!ret) {
talloc_free(p);
return NULL;
}
talloc_steal(ret, p);
memset(ret, 0, sizeof(ret[0])*(i+2));
if (numlines) *numlines = i;
ret[0] = p;
for (s = p, i=0; s < p+size; s++) {
if (s[0] == '\n') {
s[0] = 0;
i++;
ret[i] = s+1;
}
if (s[0] == '\r') s[0] = 0;
}
return ret;
}
/**
load a file into memory and return an array of pointers to lines in the file
must be freed with talloc_free().
**/
_PUBLIC_ char **file_lines_load(const char *fname, int *numlines, TALLOC_CTX *mem_ctx)
{
char *p;
size_t size;
p = file_load(fname, &size, mem_ctx);
if (!p) return NULL;
return file_lines_parse(p, size, numlines, mem_ctx);
}
char *hex_encode_talloc(TALLOC_CTX *mem_ctx, const unsigned char *buff_in, size_t len)
{
int i;
char *hex_buffer;
hex_buffer = talloc_array(mem_ctx, char, (len*2)+1);
for (i = 0; i < len; i++)
slprintf(&hex_buffer[i*2], 3, "%02X", buff_in[i]);
return hex_buffer;
}
uint8_t *hex_decode_talloc(TALLOC_CTX *mem_ctx, const char *hex_in, size_t *len)
{
int i, num;
uint8_t *buffer;
*len = strlen(hex_in) / 2;
buffer = talloc_array(mem_ctx, unsigned char, *len);
for (i=0; i<*len; i++) {
sscanf(&hex_in[i*2], "%02X", &num);
buffer[i] = (uint8_t)num;
}
return buffer;
}
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