GopherProxy

	util.c - sic - simple irc client
	git clone git://git.suckless.org/sic
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	---
	util.c (1348B)
	---
	1 /* See LICENSE file for license details. */
	2 #include <netdb.h>
	3 #include <netinet/in.h>
	4 #include <sys/socket.h>
	5
	6 static void
	7 eprint(const char *fmt, ...) {
	8 va_list ap;
	9
	10 va_start(ap, fmt);
	11 vsnprintf(bufout, sizeof bufout, fmt, ap);
	12 va_end(ap);
	13 fprintf(stderr, "%s", bufout);
	14 if(fmt[0] && fmt[strlen(fmt) - 1] == ':')
	15 fprintf(stderr, " %s\n", strerror(errno));
	16 exit(1);
	17 }
	18
	19 static int
	20 dial(char host, char port) {
	21 struct addrinfo hints;
	22 struct addrinfo res, r;
	23 int fd;
	24
	25 memset(&hints, 0, sizeof hints);
	26 hints.ai_family = AF_UNSPEC;
	27 hints.ai_socktype = SOCK_STREAM;
	28 if(getaddrinfo(host, port, &hints, &res) != 0)
	29 eprint("error: cannot resolve hostname '%s':", host);
	30 for(r = res; r; r = r->ai_next) {
	31 if((fd = socket(r->ai_family, r->ai_socktype, r->ai_prot…
	32 continue;
	33 if(connect(fd, r->ai_addr, r->ai_addrlen) == 0)
	34 break;
	35 close(fd);
	36 }
	37 freeaddrinfo(res);
	38 if(!r)
	39 eprint("error: cannot connect to host '%s'\n", host);
	40 return fd;
	41 }
	42
	43 static char *
	44 eat(char s, int (p)(int), int r) {
	45 while(s != '\0' && p((unsigned char)s) == r)
	46 s++;
	47 return s;
	48 }
	49
	50 static char*
	51 skip(char *s, char c) {
	52 while(s != c && s != '\0')
	53 s++;
	54 if(*s != '\0')
	55 *s++ = '\0';
	56 return s;
	57 }
	58
	59 static void
	60 trim(char *s) {
	61 char *e;
	62
	63 for (e = s + strlen(s); e > s && isspace((unsigned char)*(e - 1)…
	64 ;
	65 *e = '\0';
	66 }