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#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <assert.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include "macros.h"
#include "utils.h"
bool isdir(const char *s)
{
struct stat st;
int result = stat(s, &st);
if (result == -1)
ERROR("stat(%s): %s\n", s, strerror(errno));
return result == 0 && S_ISDIR(st.st_mode);
}
bool isexe(const char *s)
{
struct stat st;
int result = stat(s, &st);
if (result == -1)
ERROR("stat(%s): %s\n", s, strerror(errno));
return result == 0 && !S_ISDIR(st.st_mode) && st.st_mode & S_IXUSR;
}
bool exists(const char *s)
{
struct stat st;
return stat(s, &st) == 0;
}
bool mkfile(const char *s)
{
int fd;
if ((fd = creat(s, 0700)) == -1)
return false;
close(fd);
return true;
}
int send_fd(int sock, int fd)
{
struct msghdr msg = {0};
struct iovec iov[1];
struct cmsghdr *cmsg = NULL;
char ctrl_buf[CMSG_SPACE(sizeof(int))];
char data[1];
memset(ctrl_buf, 0, CMSG_SPACE(sizeof(int)));
data[0] = ' ';
iov[0].iov_base = data;
iov[0].iov_len = sizeof(data);
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
msg.msg_controllen = CMSG_SPACE(sizeof(int));
msg.msg_control = ctrl_buf;
cmsg = CMSG_FIRSTHDR(&msg);
cmsg->cmsg_level = SOL_SOCKET;
cmsg->cmsg_type = SCM_RIGHTS;
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
*((int *)CMSG_DATA(cmsg)) = fd;
return sendmsg(sock, &msg, 0);
}
int recv_fd(int sock)
{
struct msghdr msg = {0};
struct iovec iov[1];
struct cmsghdr *cmsg = NULL;
char ctrl_buf[CMSG_SPACE(sizeof(int))];
char data[1];
memset(ctrl_buf, 0, CMSG_SPACE(sizeof(int)));
iov[0].iov_base = data;
iov[0].iov_len = sizeof(data);
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = ctrl_buf;
msg.msg_controllen = CMSG_SPACE(sizeof(int));
msg.msg_iov = iov;
msg.msg_iovlen = 1;
recvmsg(sock, &msg, 0);
cmsg = CMSG_FIRSTHDR(&msg);
return *((int *) CMSG_DATA(cmsg));
}
bool isxbpscommand(const char *s)
{
const char *commands[] = {
"/xbps-install",
"/xbps-remove",
"/xbps-reconfigure"
};
for (size_t i = 0; i < ARRAY_SIZE(commands); i++) {
const char *command = commands[i];
if (!strcmp(s, command+1))
return true;
char *slash = strrchr(s, '/');
if (slash && !strcmp(slash, command))
return true;
}
return false;
}
bool strarray_append(struct strarray *a, char *s)
{
if (a->end == a->size - 1)
return false;
else
a->list[a->end++] = s;
return true;
}
bool intarray_append(struct intarray *a, int i)
{
if (a->end == a->size - 1)
return false;
else
a->list[a->end++] = i;
return true;
}
void strarray_alloc(struct strarray *a, size_t size)
{
a->end = 0;
a->size = size;
a->list = malloc(sizeof(char *) * size);
assert(a->list != NULL);
}
void intarray_alloc(struct intarray *i, size_t size)
{
i->end = 0;
i->size = size;
i->list = malloc(sizeof(int) * size);
assert(i->list != NULL);
}
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