reactos/rosapps/net/ncftp/sio/StrAddr.c
Steven Edwards 86bda6b3d9 Added ncftp to rosapps
svn path=/trunk/; revision=2453
2001-12-30 06:31:25 +00:00

222 lines
5.2 KiB
C

#include "syshdrs.h"
#ifndef INADDR_ANY
# define INADDR_ANY ((unsigned long int) 0x00000000)
#endif
#ifndef INADDR_NONE
# define INADDR_NONE ((unsigned long int) 0xffffffff)
#endif
/* Linux libc 5.3.x has a bug that causes isalnum() to not work! */
#define ISALNUM(c) ( (((c) >= 'A') && ((c) <= 'Z')) || (((c) >= 'a') && ((c) <= 'z')) || (((c) >= '0') && ((c) <= '9')) )
static unsigned int
ServiceNameToPortNumber(const char *const s)
{
char str[64];
char *cp;
struct servent *sp;
strncpy(str, s, sizeof(str) - 1);
str[sizeof(str) - 1] = '\0';
cp = str;
if (isdigit(*cp)) {
while (isdigit(*cp))
cp++;
*cp = '\0';
return (atoi(str));
}
for (;; cp++) {
if ((*cp == '\0')
|| ((!ISALNUM(*cp)) && (*cp != '-') && (*cp != '_')))
break;
}
*cp = '\0';
sp = getservbyname(str, "tcp");
if (sp != NULL) {
/* endservent(); */
return ((unsigned int) ntohs((unsigned short) sp->s_port));
}
sp = getservbyname(str, "udp");
if (sp != NULL) {
/* endservent(); */
return ((unsigned int) ntohs((unsigned short) sp->s_port));
}
return (0); /* error */
} /* ServiceNameToPortNumber */
int
AddrStrToAddr(const char * const s, struct sockaddr_in * const sa, const int defaultport)
{
char portstr[128];
unsigned long ipnum;
unsigned int port;
struct hostent *hp;
char *hostcp, *atsign, *colon, *cp, *p2;
memset(sa, 0, sizeof(struct sockaddr_in));
strncpy(portstr, s, sizeof(portstr));
portstr[sizeof(portstr) - 1] = '\0';
if ((colon = strchr(portstr, ':')) != NULL) {
/* Does it look like a URL? http://host ? */
if ((colon[1] == '/') && (colon[2] == '/')) {
*colon = '\0';
port = 0;
hostcp = colon + 3;
for (cp = hostcp; *cp != '\0'; cp++) {
if ((!ISALNUM(*cp)) && (*cp != '.')) {
/* http://host:port */
if ((*cp == ':') && (isdigit(cp[1]))) {
*cp++ = '\0';
p2 = cp;
while (isdigit(*cp))
cp++;
*cp = '\0';
port = atoi(p2);
}
*cp = '\0';
break;
}
}
if (port == 0)
port = ServiceNameToPortNumber(portstr);
} else {
/* Look for host.name.domain:port */
*colon = '\0';
hostcp = portstr;
port = (unsigned int) atoi(colon + 1);
}
} else if ((atsign = strchr(portstr, '@')) != NULL) {
/* Look for port@host.name.domain */
*atsign = '\0';
hostcp = atsign + 1;
port = (unsigned int) atoi(portstr);
} else if (defaultport > 0) {
/* Have just host.name.domain, use that w/ default port. */
port = (unsigned int) defaultport;
hostcp = portstr;
} else {
/* If defaultport <= 0, they must supply a port number
* in the host/port string.
*/
errno = EADDRNOTAVAIL;
return (kAddrStrToAddrMiscErr);
}
sa->sin_port = htons((short) port);
ipnum = inet_addr(hostcp);
if (ipnum != INADDR_NONE) {
sa->sin_family = AF_INET;
sa->sin_addr.s_addr = ipnum;
} else {
errno = 0;
hp = gethostbyname(hostcp);
if (hp == NULL) {
if (errno == 0)
errno = ENOENT;
return (kAddrStrToAddrBadHost);
}
sa->sin_family = hp->h_addrtype;
memcpy(&sa->sin_addr.s_addr, hp->h_addr_list[0],
(size_t) hp->h_length);
}
return (0);
} /* AddrStrToAddr */
char *
AddrToAddrStr(char *const dst, size_t dsize, struct sockaddr_in * const saddrp, int dns, const char *fmt)
{
const char *addrNamePtr;
struct hostent *hp;
char str[128];
char *dlim, *dp;
const char *cp;
struct servent *pp;
if (dns == 0) {
addrNamePtr = inet_ntoa(saddrp->sin_addr);
} else {
hp = gethostbyaddr((char *) &saddrp->sin_addr, (int) sizeof(struct in_addr), AF_INET);
if ((hp != NULL) && (hp->h_name != NULL) && (hp->h_name[0] != '\0')) {
addrNamePtr = hp->h_name;
} else {
addrNamePtr = inet_ntoa(saddrp->sin_addr);
}
}
if (fmt == NULL)
fmt = "%h:%p";
for (dp = dst, dlim = dp + dsize - 1; ; fmt++) {
if (*fmt == '\0') {
break; /* done */
} else if (*fmt == '%') {
fmt++;
if (*fmt == '%') {
if (dp < dlim)
*dp++ = '%';
} else if (*fmt == 'p') {
sprintf(str, "%u", (unsigned int) ntohs(saddrp->sin_port));
for (cp = str; *cp != '\0'; cp++)
if (dp < dlim)
*dp++ = *cp;
*dp = '\0';
} else if (*fmt == 'h') {
if (addrNamePtr != NULL) {
cp = addrNamePtr;
} else {
cp = "unknown";
}
for ( ; *cp != '\0'; cp++)
if (dp < dlim)
*dp++ = *cp;
*dp = '\0';
} else if (*fmt == 's') {
pp = getservbyport((int) (saddrp->sin_port), "tcp");
if (pp == NULL)
pp = getservbyport((int) (saddrp->sin_port), "udp");
if (pp == NULL) {
sprintf(str, "%u", (unsigned int) ntohs(saddrp->sin_port));
cp = str;
} else {
cp = pp->s_name;
}
for ( ; *cp != '\0'; cp++)
if (dp < dlim)
*dp++ = *cp;
/* endservent(); */
*dp = '\0';
} else if ((*fmt == 't') || (*fmt == 'u')) {
pp = getservbyport((int) (saddrp->sin_port), (*fmt == 'u') ? "udp" : "tcp");
if (pp == NULL) {
sprintf(str, "%u", (unsigned int) ntohs(saddrp->sin_port));
cp = str;
} else {
cp = pp->s_name;
}
for ( ; *cp != '\0'; cp++)
if (dp < dlim)
*dp++ = *cp;
/* endservent(); */
*dp = '\0';
} else if (*fmt == '\0') {
break;
} else {
if (dp < dlim)
*dp++ = *fmt;
}
} else if (dp < dlim) {
*dp++ = *fmt;
}
}
*dp = '\0';
return (dst);
} /* AddrToAddrStr */