- va_list ap;
- va_start(ap, format);
- vfprintf(stderr, format, ap);
- va_end(ap);
- if (errno) {
- fprintf(stderr, ": ");
- perror(NULL);
- fprintf(stderr, "errno=%d\n", errno);
- } else
- fprintf(stderr, "\n");
- exit(1);
-}
-
-void err(char *format, ...) {
- extern int errno;
-
- va_list ap;
- va_start(ap, format);
- vfprintf(stderr, format, ap);
- va_end(ap);
- if (errno) {
- fprintf(stderr, ": ");
- perror(NULL);
- fprintf(stderr, "errno=%d\n", errno);
- } else
- fprintf(stderr, "\n");
-}
-#endif
-
-char *stringcopy(const char *s, int len) {
- char *r;
- if (!len)
- len = strlen(s);
- r = malloc(len + 1);
- if (!r)
- debug(DBG_ERR, "stringcopy: malloc failed");
- memcpy(r, s, len);
- r[len] = '\0';
- return r;
-}
-
-void printfchars(char *prefixfmt, char *prefix, char *charfmt, char *chars, int len) {
- int i;
- unsigned char *s = (unsigned char *)chars;
- if (prefix)
- printf(prefixfmt ? prefixfmt : "%s: ", prefix);
- for (i = 0; i < len; i++)
- printf(charfmt ? charfmt : "%c", s[i]);
- printf("\n");
-}
-
-int addr_equal(struct sockaddr *a, struct sockaddr *b) {
- switch (a->sa_family) {
- case AF_INET:
- return !memcmp(&((struct sockaddr_in*)a)->sin_addr,
- &((struct sockaddr_in*)b)->sin_addr,
- sizeof(struct in_addr));
- case AF_INET6:
- return IN6_ARE_ADDR_EQUAL(&((struct sockaddr_in6*)a)->sin6_addr,
- &((struct sockaddr_in6*)b)->sin6_addr);
- default:
- /* Must not reach */
- return 0;
- }
-}
-
-struct sockaddr *addr_copy(struct sockaddr *in) {
- struct sockaddr *out = NULL;
-
- switch (in->sa_family) {
- case AF_INET:
- out = malloc(sizeof(struct sockaddr_in));
- if (out) {
- memset(out, 0, sizeof(struct sockaddr_in));
- ((struct sockaddr_in *)out)->sin_addr = ((struct sockaddr_in *)in)->sin_addr;
- }
- break;
- case AF_INET6:
- out = malloc(sizeof(struct sockaddr_in6));
- if (out) {
- memset(out, 0, sizeof(struct sockaddr_in6));
- ((struct sockaddr_in6 *)out)->sin6_addr = ((struct sockaddr_in6 *)in)->sin6_addr;
- }
- break;
- }
- return out;
-}
-
-char *addr2string(struct sockaddr *addr, socklen_t len) {
- struct sockaddr_in6 *sa6;
- struct sockaddr_in sa4;
- static char addr_buf[2][INET6_ADDRSTRLEN];
- static int i = 0;
- i = !i;
- if (addr->sa_family == AF_INET6) {
- sa6 = (struct sockaddr_in6 *)addr;
- if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
- memset(&sa4, 0, sizeof(sa4));
- sa4.sin_family = AF_INET;
- sa4.sin_port = sa6->sin6_port;
- memcpy(&sa4.sin_addr, &sa6->sin6_addr.s6_addr[12], 4);
- addr = (struct sockaddr *)&sa4;
- }
- }
- len = addr->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6);
-
- if (getnameinfo(addr, len, addr_buf[i], sizeof(addr_buf[i]),
- NULL, 0, NI_NUMERICHOST)) {
- debug(DBG_WARN, "getnameinfo failed");
- return "getnameinfo_failed";
- }
- return addr_buf[i];
-}
-
-int connectport(int type, char *host, char *port) {
- struct addrinfo hints, *res0, *res;
- int s = -1;
-
- memset(&hints, 0, sizeof(hints));
- hints.ai_socktype = type;
- hints.ai_family = AF_UNSPEC;